Finally... Import the latest open-source ZFS version - (SPA) 28.

Few new things available from now on:

- Data deduplication.
- Triple parity RAIDZ (RAIDZ3).
- zfs diff.
- zpool split.
- Snapshot holds.
- zpool import -F. Allows to rewind corrupted pool to earlier
  transaction group.
- Possibility to import pool in read-only mode.

MFC after:	1 month

33 files changed, 6924 insertions, 2155 deletions

diff --git a/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.c b/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.c
index 89e01dd..1425748 100644
--- a/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.c
+++ b/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.c
@@ -19,15 +19,15 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
+#include <solaris.h>
 #include <inttypes.h>
 #include <unistd.h>
 #include <strings.h>
+#include <libintl.h>
+#include <stdarg.h>
 #include "libnvpair.h"
 
 /*
@@ -38,21 +38,531 @@
  *	between kernel and userland, and possibly saving onto disk files.
  */
 
+/*
+ * Print control structure.
+ */
+
+#define	DEFINEOP(opname, vtype) \
+	struct { \
+		int (*op)(struct nvlist_prtctl *, void *, nvlist_t *, \
+		    const char *, vtype); \
+		void *arg; \
+	} opname
+
+#define	DEFINEARROP(opname, vtype) \
+	struct { \
+		int (*op)(struct nvlist_prtctl *, void *, nvlist_t *, \
+		    const char *, vtype, uint_t); \
+		void *arg; \
+	} opname
+
+struct nvlist_printops {
+	DEFINEOP(print_boolean, int);
+	DEFINEOP(print_boolean_value, boolean_t);
+	DEFINEOP(print_byte, uchar_t);
+	DEFINEOP(print_int8, int8_t);
+	DEFINEOP(print_uint8, uint8_t);
+	DEFINEOP(print_int16, int16_t);
+	DEFINEOP(print_uint16, uint16_t);
+	DEFINEOP(print_int32, int32_t);
+	DEFINEOP(print_uint32, uint32_t);
+	DEFINEOP(print_int64, int64_t);
+	DEFINEOP(print_uint64, uint64_t);
+	DEFINEOP(print_double, double);
+	DEFINEOP(print_string, char *);
+	DEFINEOP(print_hrtime, hrtime_t);
+	DEFINEOP(print_nvlist, nvlist_t *);
+	DEFINEARROP(print_boolean_array, boolean_t *);
+	DEFINEARROP(print_byte_array, uchar_t *);
+	DEFINEARROP(print_int8_array, int8_t *);
+	DEFINEARROP(print_uint8_array, uint8_t *);
+	DEFINEARROP(print_int16_array, int16_t *);
+	DEFINEARROP(print_uint16_array, uint16_t *);
+	DEFINEARROP(print_int32_array, int32_t *);
+	DEFINEARROP(print_uint32_array, uint32_t *);
+	DEFINEARROP(print_int64_array, int64_t *);
+	DEFINEARROP(print_uint64_array, uint64_t *);
+	DEFINEARROP(print_string_array, char **);
+	DEFINEARROP(print_nvlist_array, nvlist_t **);
+};
+
+struct nvlist_prtctl {
+	FILE *nvprt_fp;			/* output destination */
+	enum nvlist_indent_mode nvprt_indent_mode; /* see above */
+	int nvprt_indent;		/* absolute indent, or tab depth */
+	int nvprt_indentinc;		/* indent or tab increment */
+	const char *nvprt_nmfmt;	/* member name format, max one %s */
+	const char *nvprt_eomfmt;	/* after member format, e.g. "\n" */
+	const char *nvprt_btwnarrfmt;	/* between array members */
+	int nvprt_btwnarrfmt_nl;	/* nvprt_eoamfmt includes newline? */
+	struct nvlist_printops *nvprt_dfltops;
+	struct nvlist_printops *nvprt_custops;
+};
+
+#define	DFLTPRTOP(pctl, type) \
+	((pctl)->nvprt_dfltops->print_##type.op)
+
+#define	DFLTPRTOPARG(pctl, type) \
+	((pctl)->nvprt_dfltops->print_##type.arg)
+
+#define	CUSTPRTOP(pctl, type) \
+	((pctl)->nvprt_custops->print_##type.op)
+
+#define	CUSTPRTOPARG(pctl, type) \
+	((pctl)->nvprt_custops->print_##type.arg)
+
+#define	RENDER(pctl, type, nvl, name, val) \
+	{ \
+		int done = 0; \
+		if ((pctl)->nvprt_custops && CUSTPRTOP(pctl, type)) { \
+			done = CUSTPRTOP(pctl, type)(pctl, \
+			    CUSTPRTOPARG(pctl, type), nvl, name, val); \
+		} \
+		if (!done) { \
+			(void) DFLTPRTOP(pctl, type)(pctl, \
+			    DFLTPRTOPARG(pctl, type), nvl, name, val); \
+		} \
+		(void) fprintf(pctl->nvprt_fp, pctl->nvprt_eomfmt); \
+	}
+
+#define	ARENDER(pctl, type, nvl, name, arrp, count) \
+	{ \
+		int done = 0; \
+		if ((pctl)->nvprt_custops && CUSTPRTOP(pctl, type)) { \
+			done = CUSTPRTOP(pctl, type)(pctl, \
+			    CUSTPRTOPARG(pctl, type), nvl, name, arrp, count); \
+		} \
+		if (!done) { \
+			(void) DFLTPRTOP(pctl, type)(pctl, \
+			    DFLTPRTOPARG(pctl, type), nvl, name, arrp, count); \
+		} \
+		(void) fprintf(pctl->nvprt_fp, pctl->nvprt_eomfmt); \
+	}
+
+static void nvlist_print_with_indent(nvlist_t *, nvlist_prtctl_t);
+
+/*
+ * ======================================================================
+ * |									|
+ * | Indentation							|
+ * |									|
+ * ======================================================================
+ */
+
 static void
-indent(FILE *fp, int depth)
+indent(nvlist_prtctl_t pctl, int onemore)
 {
-	while (depth-- > 0)
-		(void) fprintf(fp, "\t");
+	int depth;
+
+	switch (pctl->nvprt_indent_mode) {
+	case NVLIST_INDENT_ABS:
+		(void) fprintf(pctl->nvprt_fp, "%*s",
+		    pctl->nvprt_indent + onemore * pctl->nvprt_indentinc, "");
+		break;
+
+	case NVLIST_INDENT_TABBED:
+		depth = pctl->nvprt_indent + onemore;
+		while (depth-- > 0)
+			(void) fprintf(pctl->nvprt_fp, "\t");
+	}
 }
 
 /*
- * nvlist_print - Prints elements in an event buffer
+ * ======================================================================
+ * |									|
+ * | Default nvlist member rendering functions.				|
+ * |									|
+ * ======================================================================
+ */
+
+/*
+ * Generate functions to print single-valued nvlist members.
+ *
+ * type_and_variant - suffix to form function name
+ * vtype - C type for the member value
+ * ptype - C type to cast value to for printing
+ * vfmt - format string for pair value, e.g "%d" or "0x%llx"
+ */
+
+#define	NVLIST_PRTFUNC(type_and_variant, vtype, ptype, vfmt) \
+static int \
+nvprint_##type_and_variant(nvlist_prtctl_t pctl, void *private, \
+    nvlist_t *nvl, const char *name, vtype value) \
+{ \
+	FILE *fp = pctl->nvprt_fp; \
+	NOTE(ARGUNUSED(private)) \
+	NOTE(ARGUNUSED(nvl)) \
+	indent(pctl, 1); \
+	(void) fprintf(fp, pctl->nvprt_nmfmt, name); \
+	(void) fprintf(fp, vfmt, (ptype)value); \
+	return (1); \
+}
+
+NVLIST_PRTFUNC(boolean, int, int, "%d")
+NVLIST_PRTFUNC(boolean_value, boolean_t, int, "%d")
+NVLIST_PRTFUNC(byte, uchar_t, uchar_t, "0x%2.2x")
+NVLIST_PRTFUNC(int8, int8_t, int, "%d")
+NVLIST_PRTFUNC(uint8, uint8_t, uint8_t, "0x%x")
+NVLIST_PRTFUNC(int16, int16_t, int16_t, "%d")
+NVLIST_PRTFUNC(uint16, uint16_t, uint16_t, "0x%x")
+NVLIST_PRTFUNC(int32, int32_t, int32_t, "%d")
+NVLIST_PRTFUNC(uint32, uint32_t, uint32_t, "0x%x")
+NVLIST_PRTFUNC(int64, int64_t, longlong_t, "%lld")
+NVLIST_PRTFUNC(uint64, uint64_t, u_longlong_t, "0x%llx")
+NVLIST_PRTFUNC(double, double, double, "0x%llf")
+NVLIST_PRTFUNC(string, char *, char *, "%s")
+NVLIST_PRTFUNC(hrtime, hrtime_t, hrtime_t, "0x%llx")
+
+/*
+ * Generate functions to print array-valued nvlist members.
+ */
+
+#define	NVLIST_ARRPRTFUNC(type_and_variant, vtype, ptype, vfmt) \
+static int \
+nvaprint_##type_and_variant(nvlist_prtctl_t pctl, void *private, \
+    nvlist_t *nvl, const char *name, vtype *valuep, uint_t count) \
+{ \
+	FILE *fp = pctl->nvprt_fp; \
+	uint_t i; \
+	NOTE(ARGUNUSED(private)) \
+	NOTE(ARGUNUSED(nvl)) \
+	for (i = 0; i < count; i++) { \
+		if (i == 0 || pctl->nvprt_btwnarrfmt_nl) { \
+			indent(pctl, 1); \
+			(void) fprintf(fp, pctl->nvprt_nmfmt, name); \
+			if (pctl->nvprt_btwnarrfmt_nl) \
+				(void) fprintf(fp, "[%d]: ", i); \
+		} \
+		if (i != 0) \
+			(void) fprintf(fp, pctl->nvprt_btwnarrfmt); \
+		(void) fprintf(fp, vfmt, (ptype)valuep[i]); \
+	} \
+	return (1); \
+}
+
+NVLIST_ARRPRTFUNC(boolean_array, boolean_t, boolean_t, "%d")
+NVLIST_ARRPRTFUNC(byte_array, uchar_t, uchar_t, "0x%2.2x")
+NVLIST_ARRPRTFUNC(int8_array, int8_t, int8_t, "%d")
+NVLIST_ARRPRTFUNC(uint8_array, uint8_t, uint8_t, "0x%x")
+NVLIST_ARRPRTFUNC(int16_array, int16_t, int16_t, "%d")
+NVLIST_ARRPRTFUNC(uint16_array, uint16_t, uint16_t, "0x%x")
+NVLIST_ARRPRTFUNC(int32_array, int32_t, int32_t, "%d")
+NVLIST_ARRPRTFUNC(uint32_array, uint32_t, uint32_t, "0x%x")
+NVLIST_ARRPRTFUNC(int64_array, int64_t, longlong_t, "%lld")
+NVLIST_ARRPRTFUNC(uint64_array, uint64_t, u_longlong_t, "0x%llx")
+NVLIST_ARRPRTFUNC(string_array, char *, char *, "%s")
+
+/*ARGSUSED*/
+static int
+nvprint_nvlist(nvlist_prtctl_t pctl, void *private,
+    nvlist_t *nvl, const char *name, nvlist_t *value)
+{
+	FILE *fp = pctl->nvprt_fp;
+
+	indent(pctl, 1);
+	(void) fprintf(fp, "%s = (embedded nvlist)\n", name);
+
+	pctl->nvprt_indent += pctl->nvprt_indentinc;
+	nvlist_print_with_indent(value, pctl);
+	pctl->nvprt_indent -= pctl->nvprt_indentinc;
+
+	indent(pctl, 1);
+	(void) fprintf(fp, "(end %s)\n", name);
+
+	return (1);
+}
+
+/*ARGSUSED*/
+static int
+nvaprint_nvlist_array(nvlist_prtctl_t pctl, void *private,
+    nvlist_t *nvl, const char *name, nvlist_t **valuep, uint_t count)
+{
+	FILE *fp = pctl->nvprt_fp;
+	uint_t i;
+
+	indent(pctl, 1);
+	(void) fprintf(fp, "%s = (array of embedded nvlists)\n", name);
+
+	for (i = 0; i < count; i++) {
+		indent(pctl, 1);
+		(void) fprintf(fp, "(start %s[%d])\n", name, i);
+
+		pctl->nvprt_indent += pctl->nvprt_indentinc;
+		nvlist_print_with_indent(valuep[i], pctl);
+		pctl->nvprt_indent -= pctl->nvprt_indentinc;
+
+		indent(pctl, 1);
+		(void) fprintf(fp, "(end %s[%d])\n", name, i);
+	}
+
+	return (1);
+}
+
+/*
+ * ======================================================================
+ * |									|
+ * | Interfaces that allow control over formatting.			|
+ * |									|
+ * ======================================================================
+ */
+
+void
+nvlist_prtctl_setdest(nvlist_prtctl_t pctl, FILE *fp)
+{
+	pctl->nvprt_fp = fp;
+}
+
+FILE *
+nvlist_prtctl_getdest(nvlist_prtctl_t pctl)
+{
+	return (pctl->nvprt_fp);
+}
+
+
+void
+nvlist_prtctl_setindent(nvlist_prtctl_t pctl, enum nvlist_indent_mode mode,
+    int start, int inc)
+{
+	if (mode < NVLIST_INDENT_ABS || mode > NVLIST_INDENT_TABBED)
+		mode = NVLIST_INDENT_TABBED;
+
+	if (start < 0)
+		start = 0;
+
+	if (inc < 0)
+		inc = 1;
+
+	pctl->nvprt_indent_mode = mode;
+	pctl->nvprt_indent = start;
+	pctl->nvprt_indentinc = inc;
+}
+
+void
+nvlist_prtctl_doindent(nvlist_prtctl_t pctl, int onemore)
+{
+	indent(pctl, onemore);
+}
+
+
+void
+nvlist_prtctl_setfmt(nvlist_prtctl_t pctl, enum nvlist_prtctl_fmt which,
+    const char *fmt)
+{
+	switch (which) {
+	case NVLIST_FMT_MEMBER_NAME:
+		if (fmt == NULL)
+			fmt = "%s = ";
+		pctl->nvprt_nmfmt = fmt;
+		break;
+
+	case NVLIST_FMT_MEMBER_POSTAMBLE:
+		if (fmt == NULL)
+			fmt = "\n";
+		pctl->nvprt_eomfmt = fmt;
+		break;
+
+	case NVLIST_FMT_BTWN_ARRAY:
+		if (fmt == NULL) {
+			pctl->nvprt_btwnarrfmt = " ";
+			pctl->nvprt_btwnarrfmt_nl = 0;
+		} else {
+			pctl->nvprt_btwnarrfmt = fmt;
+			pctl->nvprt_btwnarrfmt_nl = (strstr(fmt, "\n") != NULL);
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+
+void
+nvlist_prtctl_dofmt(nvlist_prtctl_t pctl, enum nvlist_prtctl_fmt which, ...)
+{
+	FILE *fp = pctl->nvprt_fp;
+	va_list ap;
+	char *name;
+
+	va_start(ap, which);
+
+	switch (which) {
+	case NVLIST_FMT_MEMBER_NAME:
+		name = va_arg(ap, char *);
+		(void) fprintf(fp, pctl->nvprt_nmfmt, name);
+		break;
+
+	case NVLIST_FMT_MEMBER_POSTAMBLE:
+		(void) fprintf(fp, pctl->nvprt_eomfmt);
+		break;
+
+	case NVLIST_FMT_BTWN_ARRAY:
+		(void) fprintf(fp, pctl->nvprt_btwnarrfmt); \
+		break;
+
+	default:
+		break;
+	}
+
+	va_end(ap);
+}
+
+/*
+ * ======================================================================
+ * |									|
+ * | Interfaces to allow appointment of replacement rendering functions.|
+ * |									|
+ * ======================================================================
+ */
+
+#define	NVLIST_PRINTCTL_REPLACE(type, vtype) \
+void \
+nvlist_prtctlop_##type(nvlist_prtctl_t pctl, \
+    int (*func)(nvlist_prtctl_t, void *, nvlist_t *, const char *, vtype), \
+    void *private) \
+{ \
+	CUSTPRTOP(pctl, type) = func; \
+	CUSTPRTOPARG(pctl, type) = private; \
+}
+
+NVLIST_PRINTCTL_REPLACE(boolean, int)
+NVLIST_PRINTCTL_REPLACE(boolean_value, boolean_t)
+NVLIST_PRINTCTL_REPLACE(byte, uchar_t)
+NVLIST_PRINTCTL_REPLACE(int8, int8_t)
+NVLIST_PRINTCTL_REPLACE(uint8, uint8_t)
+NVLIST_PRINTCTL_REPLACE(int16, int16_t)
+NVLIST_PRINTCTL_REPLACE(uint16, uint16_t)
+NVLIST_PRINTCTL_REPLACE(int32, int32_t)
+NVLIST_PRINTCTL_REPLACE(uint32, uint32_t)
+NVLIST_PRINTCTL_REPLACE(int64, int64_t)
+NVLIST_PRINTCTL_REPLACE(uint64, uint64_t)
+NVLIST_PRINTCTL_REPLACE(double, double)
+NVLIST_PRINTCTL_REPLACE(string, char *)
+NVLIST_PRINTCTL_REPLACE(hrtime, hrtime_t)
+NVLIST_PRINTCTL_REPLACE(nvlist, nvlist_t *)
+
+#define	NVLIST_PRINTCTL_AREPLACE(type, vtype) \
+void \
+nvlist_prtctlop_##type(nvlist_prtctl_t pctl, \
+    int (*func)(nvlist_prtctl_t, void *, nvlist_t *, const char *, vtype, \
+    uint_t), void *private) \
+{ \
+	CUSTPRTOP(pctl, type) = func; \
+	CUSTPRTOPARG(pctl, type) = private; \
+}
+
+NVLIST_PRINTCTL_AREPLACE(boolean_array, boolean_t *)
+NVLIST_PRINTCTL_AREPLACE(byte_array, uchar_t *)
+NVLIST_PRINTCTL_AREPLACE(int8_array, int8_t *)
+NVLIST_PRINTCTL_AREPLACE(uint8_array, uint8_t *)
+NVLIST_PRINTCTL_AREPLACE(int16_array, int16_t *)
+NVLIST_PRINTCTL_AREPLACE(uint16_array, uint16_t *)
+NVLIST_PRINTCTL_AREPLACE(int32_array, int32_t *)
+NVLIST_PRINTCTL_AREPLACE(uint32_array, uint32_t *)
+NVLIST_PRINTCTL_AREPLACE(int64_array, int64_t *)
+NVLIST_PRINTCTL_AREPLACE(uint64_array, uint64_t *)
+NVLIST_PRINTCTL_AREPLACE(string_array, char **)
+NVLIST_PRINTCTL_AREPLACE(nvlist_array, nvlist_t **)
+
+/*
+ * ======================================================================
+ * |									|
+ * | Interfaces to manage nvlist_prtctl_t cookies.			|
+ * |									|
+ * ======================================================================
  */
-static
+
+
+static const struct nvlist_printops defprtops = {
+	{ nvprint_boolean, NULL },
+	{ nvprint_boolean_value, NULL },
+	{ nvprint_byte, NULL },
+	{ nvprint_int8, NULL },
+	{ nvprint_uint8, NULL },
+	{ nvprint_int16, NULL },
+	{ nvprint_uint16, NULL },
+	{ nvprint_int32, NULL },
+	{ nvprint_uint32, NULL },
+	{ nvprint_int64, NULL },
+	{ nvprint_uint64, NULL },
+	{ nvprint_double, NULL },
+	{ nvprint_string, NULL },
+	{ nvprint_hrtime, NULL },
+	{ nvprint_nvlist, NULL },
+	{ nvaprint_boolean_array, NULL },
+	{ nvaprint_byte_array, NULL },
+	{ nvaprint_int8_array, NULL },
+	{ nvaprint_uint8_array, NULL },
+	{ nvaprint_int16_array, NULL },
+	{ nvaprint_uint16_array, NULL },
+	{ nvaprint_int32_array, NULL },
+	{ nvaprint_uint32_array, NULL },
+	{ nvaprint_int64_array, NULL },
+	{ nvaprint_uint64_array, NULL },
+	{ nvaprint_string_array, NULL },
+	{ nvaprint_nvlist_array, NULL },
+};
+
+static void
+prtctl_defaults(FILE *fp, struct nvlist_prtctl *pctl,
+    struct nvlist_printops *ops)
+{
+	pctl->nvprt_fp = fp;
+	pctl->nvprt_indent_mode = NVLIST_INDENT_TABBED;
+	pctl->nvprt_indent = 0;
+	pctl->nvprt_indentinc = 1;
+	pctl->nvprt_nmfmt = "%s = ";
+	pctl->nvprt_eomfmt = "\n";
+	pctl->nvprt_btwnarrfmt = " ";
+	pctl->nvprt_btwnarrfmt_nl = 0;
+
+	pctl->nvprt_dfltops = (struct nvlist_printops *)&defprtops;
+	pctl->nvprt_custops = ops;
+}
+
+nvlist_prtctl_t
+nvlist_prtctl_alloc(void)
+{
+	struct nvlist_prtctl *pctl;
+	struct nvlist_printops *ops;
+
+	if ((pctl = malloc(sizeof (*pctl))) == NULL)
+		return (NULL);
+
+	if ((ops = calloc(1, sizeof (*ops))) == NULL) {
+		free(pctl);
+		return (NULL);
+	}
+
+	prtctl_defaults(stdout, pctl, ops);
+
+	return (pctl);
+}
+
 void
-nvlist_print_with_indent(FILE *fp, nvlist_t *nvl, int depth)
+nvlist_prtctl_free(nvlist_prtctl_t pctl)
+{
+	if (pctl != NULL) {
+		free(pctl->nvprt_custops);
+		free(pctl);
+	}
+}
+
+/*
+ * ======================================================================
+ * |									|
+ * | Top-level print request interfaces.				|
+ * |									|
+ * ======================================================================
+ */
+
+/*
+ * nvlist_print - Prints elements in an event buffer
+ */
+static void
+nvlist_print_with_indent(nvlist_t *nvl, nvlist_prtctl_t pctl)
 {
-	int i;
+	FILE *fp = pctl->nvprt_fp;
 	char *name;
 	uint_t nelem;
 	nvpair_t *nvp;
@@ -60,7 +570,7 @@ nvlist_print_with_indent(FILE *fp, nvlist_t *nvl, int depth)
 	if (nvl == NULL)
 		return;
 
-	indent(fp, depth);
+	indent(pctl, 0);
 	(void) fprintf(fp, "nvlist version: %d\n", NVL_VERSION(nvl));
 
 	nvp = nvlist_next_nvpair(nvl, NULL);
@@ -68,199 +578,174 @@ nvlist_print_with_indent(FILE *fp, nvlist_t *nvl, int depth)
 	while (nvp) {
 		data_type_t type = nvpair_type(nvp);
 
-		indent(fp, depth);
 		name = nvpair_name(nvp);
-		(void) fprintf(fp, "\t%s =", name);
 		nelem = 0;
+
 		switch (type) {
 		case DATA_TYPE_BOOLEAN: {
-			(void) fprintf(fp, " 1");
+			RENDER(pctl, boolean, nvl, name, 1);
 			break;
 		}
 		case DATA_TYPE_BOOLEAN_VALUE: {
 			boolean_t val;
 			(void) nvpair_value_boolean_value(nvp, &val);
-			(void) fprintf(fp, " %d", val);
+			RENDER(pctl, boolean_value, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_BYTE: {
 			uchar_t val;
 			(void) nvpair_value_byte(nvp, &val);
-			(void) fprintf(fp, " 0x%2.2x", val);
+			RENDER(pctl, byte, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_INT8: {
 			int8_t val;
 			(void) nvpair_value_int8(nvp, &val);
-			(void) fprintf(fp, " %d", val);
+			RENDER(pctl, int8, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_UINT8: {
 			uint8_t val;
 			(void) nvpair_value_uint8(nvp, &val);
-			(void) fprintf(fp, " 0x%x", val);
+			RENDER(pctl, uint8, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_INT16: {
 			int16_t val;
 			(void) nvpair_value_int16(nvp, &val);
-			(void) fprintf(fp, " %d", val);
+			RENDER(pctl, int16, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_UINT16: {
 			uint16_t val;
 			(void) nvpair_value_uint16(nvp, &val);
-			(void) fprintf(fp, " 0x%x", val);
+			RENDER(pctl, uint16, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_INT32: {
 			int32_t val;
 			(void) nvpair_value_int32(nvp, &val);
-			(void) fprintf(fp, " %d", val);
+			RENDER(pctl, int32, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_UINT32: {
 			uint32_t val;
 			(void) nvpair_value_uint32(nvp, &val);
-			(void) fprintf(fp, " 0x%x", val);
+			RENDER(pctl, uint32, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_INT64: {
 			int64_t val;
 			(void) nvpair_value_int64(nvp, &val);
-			(void) fprintf(fp, " %lld", (longlong_t)val);
+			RENDER(pctl, int64, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_UINT64: {
 			uint64_t val;
 			(void) nvpair_value_uint64(nvp, &val);
-			(void) fprintf(fp, " 0x%llx", (u_longlong_t)val);
+			RENDER(pctl, uint64, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_DOUBLE: {
 			double val;
 			(void) nvpair_value_double(nvp, &val);
-			(void) fprintf(fp, " 0x%llf", val);
+			RENDER(pctl, double, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_STRING: {
 			char *val;
 			(void) nvpair_value_string(nvp, &val);
-			(void) fprintf(fp, " %s", val);
+			RENDER(pctl, string, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_BOOLEAN_ARRAY: {
 			boolean_t *val;
 			(void) nvpair_value_boolean_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " %d", val[i]);
+			ARENDER(pctl, boolean_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_BYTE_ARRAY: {
 			uchar_t *val;
 			(void) nvpair_value_byte_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " 0x%2.2x", val[i]);
+			ARENDER(pctl, byte_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_INT8_ARRAY: {
 			int8_t *val;
 			(void) nvpair_value_int8_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " %d", val[i]);
+			ARENDER(pctl, int8_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_UINT8_ARRAY: {
 			uint8_t *val;
 			(void) nvpair_value_uint8_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " 0x%x", val[i]);
+			ARENDER(pctl, uint8_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_INT16_ARRAY: {
 			int16_t *val;
 			(void) nvpair_value_int16_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " %d", val[i]);
+			ARENDER(pctl, int16_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_UINT16_ARRAY: {
 			uint16_t *val;
 			(void) nvpair_value_uint16_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " 0x%x", val[i]);
+			ARENDER(pctl, uint16_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_INT32_ARRAY: {
 			int32_t *val;
 			(void) nvpair_value_int32_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " %d", val[i]);
+			ARENDER(pctl, int32_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_UINT32_ARRAY: {
 			uint32_t *val;
 			(void) nvpair_value_uint32_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " 0x%x", val[i]);
+			ARENDER(pctl, uint32_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_INT64_ARRAY: {
 			int64_t *val;
 			(void) nvpair_value_int64_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " %lld", (longlong_t)val[i]);
+			ARENDER(pctl, int64_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_UINT64_ARRAY: {
 			uint64_t *val;
 			(void) nvpair_value_uint64_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " 0x%llx",
-				    (u_longlong_t)val[i]);
+			ARENDER(pctl, uint64_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_STRING_ARRAY: {
 			char **val;
 			(void) nvpair_value_string_array(nvp, &val, &nelem);
-			for (i = 0; i < nelem; i++)
-				(void) fprintf(fp, " %s", val[i]);
+			ARENDER(pctl, string_array, nvl, name, val, nelem);
 			break;
 		}
 		case DATA_TYPE_HRTIME: {
 			hrtime_t val;
 			(void) nvpair_value_hrtime(nvp, &val);
-			(void) fprintf(fp, " 0x%llx", val);
+			RENDER(pctl, hrtime, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_NVLIST: {
 			nvlist_t *val;
 			(void) nvpair_value_nvlist(nvp, &val);
-			(void) fprintf(fp, " (embedded nvlist)\n");
-			nvlist_print_with_indent(fp, val, depth + 1);
-			indent(fp, depth + 1);
-			(void) fprintf(fp, "(end %s)\n", name);
+			RENDER(pctl, nvlist, nvl, name, val);
 			break;
 		}
 		case DATA_TYPE_NVLIST_ARRAY: {
 			nvlist_t **val;
 			(void) nvpair_value_nvlist_array(nvp, &val, &nelem);
-			(void) fprintf(fp, " (array of embedded nvlists)\n");
-			for (i = 0; i < nelem; i++) {
-				indent(fp, depth + 1);
-				(void) fprintf(fp,
-				    "(start %s[%d])\n", name, i);
-				nvlist_print_with_indent(fp, val[i], depth + 1);
-				indent(fp, depth + 1);
-				(void) fprintf(fp, "(end %s[%d])\n", name, i);
-			}
+			ARENDER(pctl, nvlist_array, nvl, name, val, nelem);
 			break;
 		}
 		default:
 			(void) fprintf(fp, " unknown data type (%d)", type);
 			break;
 		}
-		(void) fprintf(fp, "\n");
 		nvp = nvlist_next_nvpair(nvl, nvp);
 	}
 }
@@ -268,9 +753,175 @@ nvlist_print_with_indent(FILE *fp, nvlist_t *nvl, int depth)
 void
 nvlist_print(FILE *fp, nvlist_t *nvl)
 {
-	nvlist_print_with_indent(fp, nvl, 0);
+	struct nvlist_prtctl pc;
+
+	prtctl_defaults(fp, &pc, NULL);
+	nvlist_print_with_indent(nvl, &pc);
+}
+
+void
+nvlist_prt(nvlist_t *nvl, nvlist_prtctl_t pctl)
+{
+	nvlist_print_with_indent(nvl, pctl);
+}
+
+#define	NVP(elem, type, vtype, ptype, format) { \
+	vtype	value; \
+\
+	(void) nvpair_value_##type(elem, &value); \
+	(void) printf("%*s%s: " format "\n", indent, "", \
+	    nvpair_name(elem), (ptype)value); \
 }
 
+#define	NVPA(elem, type, vtype, ptype, format) { \
+	uint_t	i, count; \
+	vtype	*value;  \
+\
+	(void) nvpair_value_##type(elem, &value, &count); \
+	for (i = 0; i < count; i++) { \
+		(void) printf("%*s%s[%d]: " format "\n", indent, "", \
+		    nvpair_name(elem), i, (ptype)value[i]); \
+	} \
+}
+
+/*
+ * Similar to nvlist_print() but handles arrays slightly differently.
+ */
+void
+dump_nvlist(nvlist_t *list, int indent)
+{
+	nvpair_t	*elem = NULL;
+	boolean_t	bool_value;
+	nvlist_t	*nvlist_value;
+	nvlist_t	**nvlist_array_value;
+	uint_t		i, count;
+
+	if (list == NULL) {
+		return;
+	}
+
+	while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
+		switch (nvpair_type(elem)) {
+		case DATA_TYPE_BOOLEAN_VALUE:
+			(void) nvpair_value_boolean_value(elem, &bool_value);
+			(void) printf("%*s%s: %s\n", indent, "",
+			    nvpair_name(elem), bool_value ? "true" : "false");
+			break;
+
+		case DATA_TYPE_BYTE:
+			NVP(elem, byte, uchar_t, int, "%u");
+			break;
+
+		case DATA_TYPE_INT8:
+			NVP(elem, int8, int8_t, int, "%d");
+			break;
+
+		case DATA_TYPE_UINT8:
+			NVP(elem, uint8, uint8_t, int, "%u");
+			break;
+
+		case DATA_TYPE_INT16:
+			NVP(elem, int16, int16_t, int, "%d");
+			break;
+
+		case DATA_TYPE_UINT16:
+			NVP(elem, uint16, uint16_t, int, "%u");
+			break;
+
+		case DATA_TYPE_INT32:
+			NVP(elem, int32, int32_t, long, "%ld");
+			break;
+
+		case DATA_TYPE_UINT32:
+			NVP(elem, uint32, uint32_t, ulong_t, "%lu");
+			break;
+
+		case DATA_TYPE_INT64:
+			NVP(elem, int64, int64_t, longlong_t, "%lld");
+			break;
+
+		case DATA_TYPE_UINT64:
+			NVP(elem, uint64, uint64_t, u_longlong_t, "%llu");
+			break;
+
+		case DATA_TYPE_STRING:
+			NVP(elem, string, char *, char *, "'%s'");
+			break;
+
+		case DATA_TYPE_BYTE_ARRAY:
+			NVPA(elem, byte_array, uchar_t, int, "%u");
+			break;
+
+		case DATA_TYPE_INT8_ARRAY:
+			NVPA(elem, int8_array, int8_t, int, "%d");
+			break;
+
+		case DATA_TYPE_UINT8_ARRAY:
+			NVPA(elem, uint8_array, uint8_t, int, "%u");
+			break;
+
+		case DATA_TYPE_INT16_ARRAY:
+			NVPA(elem, int16_array, int16_t, int, "%d");
+			break;
+
+		case DATA_TYPE_UINT16_ARRAY:
+			NVPA(elem, uint16_array, uint16_t, int, "%u");
+			break;
+
+		case DATA_TYPE_INT32_ARRAY:
+			NVPA(elem, int32_array, int32_t, long, "%ld");
+			break;
+
+		case DATA_TYPE_UINT32_ARRAY:
+			NVPA(elem, uint32_array, uint32_t, ulong_t, "%lu");
+			break;
+
+		case DATA_TYPE_INT64_ARRAY:
+			NVPA(elem, int64_array, int64_t, longlong_t, "%lld");
+			break;
+
+		case DATA_TYPE_UINT64_ARRAY:
+			NVPA(elem, uint64_array, uint64_t, u_longlong_t,
+			    "%llu");
+			break;
+
+		case DATA_TYPE_STRING_ARRAY:
+			NVPA(elem, string_array, char *, char *, "'%s'");
+			break;
+
+		case DATA_TYPE_NVLIST:
+			(void) nvpair_value_nvlist(elem, &nvlist_value);
+			(void) printf("%*s%s:\n", indent, "",
+			    nvpair_name(elem));
+			dump_nvlist(nvlist_value, indent + 4);
+			break;
+
+		case DATA_TYPE_NVLIST_ARRAY:
+			(void) nvpair_value_nvlist_array(elem,
+			    &nvlist_array_value, &count);
+			for (i = 0; i < count; i++) {
+				(void) printf("%*s%s[%u]:\n", indent, "",
+				    nvpair_name(elem), i);
+				dump_nvlist(nvlist_array_value[i], indent + 4);
+			}
+			break;
+
+		default:
+			(void) printf(dgettext(TEXT_DOMAIN, "bad config type "
+			    "%d for %s\n"), nvpair_type(elem),
+			    nvpair_name(elem));
+		}
+	}
+}
+
+/*
+ * ======================================================================
+ * |									|
+ * | Misc private interface.						|
+ * |									|
+ * ======================================================================
+ */
+
 /*
  * Determine if string 'value' matches 'nvp' value.  The 'value' string is
  * converted, depending on the type of 'nvp', prior to match.  For numeric
diff --git a/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.h b/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.h
index e655e0d..4c2615d 100644
--- a/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.h
+++ b/cddl/contrib/opensolaris/lib/libnvpair/libnvpair.h
@@ -19,15 +19,12 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #ifndef	_LIBNVPAIR_H
 #define	_LIBNVPAIR_H
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/nvpair.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -37,9 +34,158 @@
 extern "C" {
 #endif
 
-void nvlist_print(FILE *, nvlist_t *);
-int nvpair_value_match(nvpair_t *, int, char *, char **);
-int nvpair_value_match_regex(nvpair_t *, int, char *, regex_t *, char **);
+/*
+ * All interfaces described in this file are private to Solaris, and
+ * are subject to change at any time and without notice.  The public
+ * nvlist/nvpair interfaces, as documented in manpage sections 3NVPAIR,
+ * are all imported from <sys/nvpair.h> included above.
+ */
+
+extern int nvpair_value_match(nvpair_t *, int, char *, char **);
+extern int nvpair_value_match_regex(nvpair_t *, int, char *, regex_t *,
+    char **);
+
+extern void nvlist_print(FILE *, nvlist_t *);
+extern void dump_nvlist(nvlist_t *, int);
+
+/*
+ * Private nvlist printing interface that allows the caller some control
+ * over output rendering (as opposed to nvlist_print and dump_nvlist).
+ *
+ * Obtain an opaque nvlist_prtctl_t cookie using nvlist_prtctl_alloc
+ * (NULL on failure);  on return the cookie is set up for default formatting
+ * and rendering.  Quote the cookie in subsequent customisation functions and
+ * then pass the cookie to nvlist_prt to render the nvlist.  Finally,
+ * use nvlist_prtctl_free to release the cookie.
+ *
+ * For all nvlist_lookup_xxx and nvlist_lookup_xxx_array functions
+ * we have a corresponding brace of functions that appoint replacement
+ * rendering functions:
+ *
+ *	extern void nvlist_prtctl_xxx(nvlist_prtctl_t,
+ *	    void (*)(nvlist_prtctl_t ctl, void *private, const char *name,
+ *	    xxxtype value))
+ *
+ *	and
+ *
+ *	extern void nvlist_prtctl_xxx_array(nvlist_prtctl_t,
+ *	    void (*)(nvlist_prtctl_t ctl, void *private, const char *name,
+ *	    xxxtype value, uint_t count))
+ *
+ * where xxxtype is the C datatype corresponding to xxx, eg int8_t for "int8"
+ * and char * for "string".  The function that is appointed to render the
+ * specified datatype receives as arguments the cookie, the nvlist
+ * member name, the value of that member (or a pointer for array function),
+ * and (for array rendering functions) a count of the number of elements.
+ */
+
+typedef struct nvlist_prtctl *nvlist_prtctl_t;	/* opaque */
+
+enum nvlist_indent_mode {
+	NVLIST_INDENT_ABS,	/* Absolute indentation */
+	NVLIST_INDENT_TABBED	/* Indent with tabstops */
+};
+
+extern nvlist_prtctl_t nvlist_prtctl_alloc(void);
+extern void nvlist_prtctl_free(nvlist_prtctl_t);
+extern void nvlist_prt(nvlist_t *, nvlist_prtctl_t);
+
+/* Output stream */
+extern void nvlist_prtctl_setdest(nvlist_prtctl_t, FILE *);
+extern FILE *nvlist_prtctl_getdest(nvlist_prtctl_t);
+
+/* Indentation mode, start indent, indent increment; default tabbed/0/1 */
+extern void nvlist_prtctl_setindent(nvlist_prtctl_t, enum nvlist_indent_mode,
+    int, int);
+extern void nvlist_prtctl_doindent(nvlist_prtctl_t, int);
+
+enum nvlist_prtctl_fmt {
+	NVLIST_FMT_MEMBER_NAME,		/* name fmt; default "%s = " */
+	NVLIST_FMT_MEMBER_POSTAMBLE,	/* after nvlist member; default "\n" */
+	NVLIST_FMT_BTWN_ARRAY		/* between array members; default " " */
+};
+
+extern void nvlist_prtctl_setfmt(nvlist_prtctl_t, enum nvlist_prtctl_fmt,
+    const char *);
+extern void nvlist_prtctl_dofmt(nvlist_prtctl_t, enum nvlist_prtctl_fmt, ...);
+
+/*
+ * Function prototypes for interfaces that appoint a new rendering function
+ * for single-valued nvlist members.
+ *
+ * A replacement function receives arguments as follows:
+ *
+ *	nvlist_prtctl_t	Print control structure; do not change preferences
+ *			for this object from a print callback function.
+ *
+ *	void *		The function-private cookie argument registered
+ *			when the replacement function was appointed.
+ *
+ *	nvlist_t *	The full nvlist that is being processed.  The
+ *			rendering function is called to render a single
+ *			member (name and value passed as below) but it may
+ *			want to reference or incorporate other aspects of
+ *			the full nvlist.
+ *
+ *	const char *	Member name to render
+ *
+ *	valtype		Value of the member to render
+ *
+ * The function must return non-zero if it has rendered output for this
+ * member, or 0 if it wants to default to standard rendering for this
+ * one member.
+ */
+
+#define	NVLIST_PRINTCTL_SVDECL(funcname, valtype) \
+    extern void funcname(nvlist_prtctl_t, \
+    int (*)(nvlist_prtctl_t, void *, nvlist_t *, const char *, valtype), \
+    void *)
+
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_boolean, int);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_boolean_value, boolean_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_byte, uchar_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int8, int8_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint8, uint8_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int16, int16_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint16, uint16_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int32, int32_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint32, uint32_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int64, int64_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint64, uint64_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_double, double);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_string, char *);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_hrtime, hrtime_t);
+NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_nvlist, nvlist_t *);
+
+#undef	NVLIST_PRINTCTL_SVDECL	/* was just for "clarity" above */
+
+/*
+ * Function prototypes for interfaces that appoint a new rendering function
+ * for array-valued nvlist members.
+ *
+ * One additional argument is taken: uint_t for the number of array elements
+ *
+ * Return values as above.
+ */
+#define	NVLIST_PRINTCTL_AVDECL(funcname, vtype) \
+    extern void funcname(nvlist_prtctl_t, \
+    int (*)(nvlist_prtctl_t, void *, nvlist_t *, const char *, vtype, uint_t), \
+    void *)
+
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_boolean_array, boolean_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_byte_array, uchar_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int8_array, int8_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint8_array, uint8_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int16_array, int16_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint16_array, uint16_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int32_array, int32_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint32_array, uint32_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int64_array, int64_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint64_array, uint64_t *);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_string_array, char **);
+NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_nvlist_array, nvlist_t **);
+
+#undef	NVLIST_PRINTCTL_AVDECL	/* was just for "clarity" above */
 
 #ifdef	__cplusplus
 }
diff --git a/cddl/contrib/opensolaris/lib/libuutil/common/libuutil.h b/cddl/contrib/opensolaris/lib/libuutil/common/libuutil.h
index 269687e..7a5f8a8 100644
--- a/cddl/contrib/opensolaris/lib/libuutil/common/libuutil.h
+++ b/cddl/contrib/opensolaris/lib/libuutil/common/libuutil.h
@@ -19,8 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #ifndef	_LIBUUTIL_H
@@ -29,6 +28,7 @@
 #include <solaris.h>
 #include <sys/types.h>
 #include <stdarg.h>
+#include <stdio.h>
 
 #ifdef	__cplusplus
 extern "C" {
@@ -143,12 +143,21 @@ extern int uu_open_tmp(const char *dir, uint_t uflags);
 /*
  * Convenience functions.
  */
+#define	UU_NELEM(a)	(sizeof (a) / sizeof ((a)[0]))
+
 /*PRINTFLIKE1*/
 extern char *uu_msprintf(const char *format, ...);
 extern void *uu_zalloc(size_t);
 extern char *uu_strdup(const char *);
 extern void uu_free(void *);
 
+extern boolean_t uu_strcaseeq(const char *a, const char *b);
+extern boolean_t uu_streq(const char *a, const char *b);
+extern char *uu_strndup(const char *s, size_t n);
+extern boolean_t uu_strbw(const char *a, const char *b);
+extern void *uu_memdup(const void *buf, size_t sz);
+extern void uu_dump(FILE *out, const char *prefix, const void *buf, size_t len);
+
 /*
  * Comparison function type definition.
  *   Developers should be careful in their use of the _private argument. If you
diff --git a/cddl/contrib/opensolaris/lib/libuutil/common/uu_alloc.c b/cddl/contrib/opensolaris/lib/libuutil/common/uu_alloc.c
index 05d8622..2bef759 100644
--- a/cddl/contrib/opensolaris/lib/libuutil/common/uu_alloc.c
+++ b/cddl/contrib/opensolaris/lib/libuutil/common/uu_alloc.c
@@ -19,8 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #include "libuutil_common.h"
@@ -67,6 +66,44 @@ uu_strdup(const char *str)
 	return (buf);
 }
 
+/*
+ * Duplicate up to n bytes of a string.  Kind of sort of like
+ * strdup(strlcpy(s, n)).
+ */
+char *
+uu_strndup(const char *s, size_t n)
+{
+	size_t len;
+	char *p;
+
+	len = strnlen(s, n);
+	p = uu_zalloc(len + 1);
+	if (p == NULL)
+		return (NULL);
+
+	if (len > 0)
+		(void) memcpy(p, s, len);
+	p[len] = '\0';
+
+	return (p);
+}
+
+/*
+ * Duplicate a block of memory.  Combines malloc with memcpy, much as
+ * strdup combines malloc, strlen, and strcpy.
+ */
+void *
+uu_memdup(const void *buf, size_t sz)
+{
+	void *p;
+
+	p = uu_zalloc(sz);
+	if (p == NULL)
+		return (NULL);
+	(void) memcpy(p, buf, sz);
+	return (p);
+}
+
 char *
 uu_msprintf(const char *format, ...)
 {
diff --git a/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c b/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c
index fb0c32b..507d4eb 100644
--- a/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c
+++ b/cddl/contrib/opensolaris/lib/libuutil/common/uu_misc.c
@@ -20,12 +20,9 @@
  */
 
 /*
- * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include "libuutil_common.h"
 
 #include <assert.h>
@@ -39,6 +36,7 @@
 #include <sys/debug.h>
 #include <thread.h>
 #include <unistd.h>
+#include <ctype.h>
 
 #if !defined(TEXT_DOMAIN)
 #define	TEXT_DOMAIN "SYS_TEST"
@@ -248,3 +246,30 @@ uu_init(void)
 {
 	(void) pthread_atfork(uu_lockup, uu_release, uu_release_child);
 }
+
+/*
+ * Dump a block of memory in hex+ascii, for debugging
+ */
+void
+uu_dump(FILE *out, const char *prefix, const void *buf, size_t len)
+{
+	const unsigned char *p = buf;
+	int i;
+
+	for (i = 0; i < len; i += 16) {
+		int j;
+
+		(void) fprintf(out, "%s", prefix);
+		for (j = 0; j < 16 && i + j < len; j++) {
+			(void) fprintf(out, "%2.2x ", p[i + j]);
+		}
+		for (; j < 16; j++) {
+			(void) fprintf(out, "   ");
+		}
+		for (j = 0; j < 16 && i + j < len; j++) {
+			(void) fprintf(out, "%c",
+			    isprint(p[i + j]) ? p[i + j] : '.');
+		}
+		(void) fprintf(out, "\n");
+	}
+}
diff --git a/cddl/contrib/opensolaris/lib/libuutil/common/uu_string.c b/cddl/contrib/opensolaris/lib/libuutil/common/uu_string.c
new file mode 100644
index 0000000..66afba0
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/libuutil/common/uu_string.c
@@ -0,0 +1,56 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+/*
+ * String helper functions
+ */
+
+#include <string.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <ctype.h>
+#include "libuutil.h"
+
+/* Return true if strings are equal */
+boolean_t
+uu_streq(const char *a, const char *b)
+{
+	return (strcmp(a, b) == 0);
+}
+
+/* Return true if strings are equal, case-insensitively */
+boolean_t
+uu_strcaseeq(const char *a, const char *b)
+{
+	return (strcasecmp(a, b) == 0);
+}
+
+/* Return true if string a Begins With string b */
+boolean_t
+uu_strbw(const char *a, const char *b)
+{
+	return (strncmp(a, b, strlen(b)) == 0);
+}
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h
index 5fad609..fff63dd 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs.h
@@ -20,8 +20,8 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
  */
 
 #ifndef	_LIBZFS_H
@@ -66,7 +66,6 @@ enum {
 	EZFS_BADSTREAM,		/* bad backup stream */
 	EZFS_DSREADONLY,	/* dataset is readonly */
 	EZFS_VOLTOOBIG,		/* volume is too large for 32-bit system */
-	EZFS_VOLHASDATA,	/* volume already contains data */
 	EZFS_INVALIDNAME,	/* invalid dataset name */
 	EZFS_BADRESTORE,	/* unable to restore to destination */
 	EZFS_BADBACKUP,		/* backup failed */
@@ -85,17 +84,15 @@ enum {
 	EZFS_UMOUNTFAILED,	/* failed to unmount dataset */
 	EZFS_UNSHARENFSFAILED,	/* unshare(1M) failed */
 	EZFS_SHARENFSFAILED,	/* share(1M) failed */
-	EZFS_DEVLINKS,		/* failed to create zvol links */
 	EZFS_PERM,		/* permission denied */
 	EZFS_NOSPC,		/* out of space */
+	EZFS_FAULT,		/* bad address */
 	EZFS_IO,		/* I/O error */
 	EZFS_INTR,		/* signal received */
 	EZFS_ISSPARE,		/* device is a hot spare */
 	EZFS_INVALCONFIG,	/* invalid vdev configuration */
 	EZFS_RECURSIVE,		/* recursive dependency */
 	EZFS_NOHISTORY,		/* no history object */
-	EZFS_UNSHAREISCSIFAILED, /* iscsitgtd failed request to unshare */
-	EZFS_SHAREISCSIFAILED,	/* iscsitgtd failed request to share */
 	EZFS_POOLPROPS,		/* couldn't retrieve pool props */
 	EZFS_POOL_NOTSUP,	/* ops not supported for this type of pool */
 	EZFS_POOL_INVALARG,	/* invalid argument for this pool operation */
@@ -103,12 +100,10 @@ enum {
 	EZFS_OPENFAILED,	/* open of device failed */
 	EZFS_NOCAP,		/* couldn't get capacity */
 	EZFS_LABELFAILED,	/* write of label failed */
-	EZFS_ISCSISVCUNAVAIL,	/* iscsi service unavailable */
 	EZFS_BADWHO,		/* invalid permission who */
 	EZFS_BADPERM,		/* invalid permission */
 	EZFS_BADPERMSET,	/* invalid permission set name */
 	EZFS_NODELEGATION,	/* delegated administration is disabled */
-	EZFS_PERMRDONLY,	/* pemissions are readonly */
 	EZFS_UNSHARESMBFAILED,	/* failed to unshare over smb */
 	EZFS_SHARESMBFAILED,	/* failed to share over smb */
 	EZFS_BADCACHE,		/* bad cache file */
@@ -117,6 +112,17 @@ enum {
 	EZFS_NOTSUP,		/* ops not supported on this dataset */
 	EZFS_ACTIVE_SPARE,	/* pool has active shared spare devices */
 	EZFS_UNPLAYED_LOGS,	/* log device has unplayed logs */
+	EZFS_REFTAG_RELE,	/* snapshot release: tag not found */
+	EZFS_REFTAG_HOLD,	/* snapshot hold: tag already exists */
+	EZFS_TAGTOOLONG,	/* snapshot hold/rele: tag too long */
+	EZFS_PIPEFAILED,	/* pipe create failed */
+	EZFS_THREADCREATEFAILED, /* thread create failed */
+	EZFS_POSTSPLIT_ONLINE,	/* onlining a disk after splitting it */
+	EZFS_SCRUBBING,		/* currently scrubbing */
+	EZFS_NO_SCRUB,		/* no active scrub */
+	EZFS_DIFF,		/* general failure of zfs diff */
+	EZFS_DIFFDATA,		/* bad zfs diff data */
+	EZFS_POOLREADONLY,	/* pool is in read-only mode */
 	EZFS_UNKNOWN
 };
 
@@ -211,11 +217,19 @@ extern int zpool_create(libzfs_handle_t *, const char *, nvlist_t *,
 extern int zpool_destroy(zpool_handle_t *);
 extern int zpool_add(zpool_handle_t *, nvlist_t *);
 
+typedef struct splitflags {
+	/* do not split, but return the config that would be split off */
+	int dryrun : 1;
+
+	/* after splitting, import the pool */
+	int import : 1;
+} splitflags_t;
+
 /*
  * Functions to manipulate pool and vdev state
  */
-extern int zpool_scrub(zpool_handle_t *, pool_scrub_type_t);
-extern int zpool_clear(zpool_handle_t *, const char *);
+extern int zpool_scan(zpool_handle_t *, pool_scan_func_t);
+extern int zpool_clear(zpool_handle_t *, const char *, nvlist_t *);
 
 extern int zpool_vdev_online(zpool_handle_t *, const char *, int,
     vdev_state_t *);
@@ -224,13 +238,17 @@ extern int zpool_vdev_attach(zpool_handle_t *, const char *,
     const char *, nvlist_t *, int);
 extern int zpool_vdev_detach(zpool_handle_t *, const char *);
 extern int zpool_vdev_remove(zpool_handle_t *, const char *);
+extern int zpool_vdev_split(zpool_handle_t *, char *, nvlist_t **, nvlist_t *,
+    splitflags_t);
 
-extern int zpool_vdev_fault(zpool_handle_t *, uint64_t);
-extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t);
+extern int zpool_vdev_fault(zpool_handle_t *, uint64_t, vdev_aux_t);
+extern int zpool_vdev_degrade(zpool_handle_t *, uint64_t, vdev_aux_t);
 extern int zpool_vdev_clear(zpool_handle_t *, uint64_t);
 
 extern nvlist_t *zpool_find_vdev(zpool_handle_t *, const char *, boolean_t *,
     boolean_t *, boolean_t *);
+extern nvlist_t *zpool_find_vdev_by_physpath(zpool_handle_t *, const char *,
+    boolean_t *, boolean_t *, boolean_t *);
 extern int zpool_label_disk(libzfs_handle_t *, zpool_handle_t *, char *);
 
 /*
@@ -284,6 +302,7 @@ typedef enum {
 	ZPOOL_STATUS_VERSION_OLDER,	/* older on-disk version */
 	ZPOOL_STATUS_RESILVERING,	/* device being resilvered */
 	ZPOOL_STATUS_OFFLINE_DEV,	/* device online */
+	ZPOOL_STATUS_REMOVED_DEV,	/* removed device */
 
 	/*
 	 * Finally, the following indicates a healthy pool.
@@ -293,6 +312,7 @@ typedef enum {
 
 extern zpool_status_t zpool_get_status(zpool_handle_t *, char **);
 extern zpool_status_t zpool_import_status(nvlist_t *, char **);
+extern void zpool_dump_ddt(const ddt_stat_t *dds, const ddt_histogram_t *ddh);
 
 /*
  * Statistics and configuration functions.
@@ -309,35 +329,53 @@ extern int zpool_export_force(zpool_handle_t *);
 extern int zpool_import(libzfs_handle_t *, nvlist_t *, const char *,
     char *altroot);
 extern int zpool_import_props(libzfs_handle_t *, nvlist_t *, const char *,
-    nvlist_t *, boolean_t);
+    nvlist_t *, int);
 
 /*
  * Search for pools to import
  */
+
+typedef struct importargs {
+	char **path;		/* a list of paths to search		*/
+	int paths;		/* number of paths to search		*/
+	char *poolname;		/* name of a pool to find		*/
+	uint64_t guid;		/* guid of a pool to find		*/
+	char *cachefile;	/* cachefile to use for import		*/
+	int can_be_active : 1;	/* can the pool be active?		*/
+	int unique : 1;		/* does 'poolname' already exist?	*/
+	int exists : 1;		/* set on return if pool already exists	*/
+} importargs_t;
+
+extern nvlist_t *zpool_search_import(libzfs_handle_t *, importargs_t *);
+
+/* legacy pool search routines */
 extern nvlist_t *zpool_find_import(libzfs_handle_t *, int, char **);
 extern nvlist_t *zpool_find_import_cached(libzfs_handle_t *, const char *,
     char *, uint64_t);
-extern nvlist_t *zpool_find_import_byname(libzfs_handle_t *, int, char **,
-    char *);
-extern nvlist_t *zpool_find_import_byguid(libzfs_handle_t *, int, char **,
-    uint64_t);
-extern nvlist_t *zpool_find_import_activeok(libzfs_handle_t *, int, char **);
 
 /*
  * Miscellaneous pool functions
  */
 struct zfs_cmd;
 
-extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *);
+extern const char *zfs_history_event_names[LOG_END];
+
+extern char *zpool_vdev_name(libzfs_handle_t *, zpool_handle_t *, nvlist_t *,
+    boolean_t verbose);
 extern int zpool_upgrade(zpool_handle_t *, uint64_t);
 extern int zpool_get_history(zpool_handle_t *, nvlist_t **);
+extern int zpool_history_unpack(char *, uint64_t, uint64_t *,
+    nvlist_t ***, uint_t *);
 extern void zpool_set_history_str(const char *subcommand, int argc,
     char **argv, char *history_str);
 extern int zpool_stage_history(libzfs_handle_t *, const char *);
 extern void zpool_obj_to_path(zpool_handle_t *, uint64_t, uint64_t, char *,
     size_t len);
 extern int zfs_ioctl(libzfs_handle_t *, unsigned long, struct zfs_cmd *);
-extern int zpool_get_physpath(zpool_handle_t *, char *);
+extern int zpool_get_physpath(zpool_handle_t *, char *, size_t);
+extern void zpool_explain_recover(libzfs_handle_t *, const char *, int,
+    nvlist_t *);
+
 /*
  * Basic handle manipulations.  These functions do not create or destroy the
  * underlying datasets, only the references to them.
@@ -368,6 +406,8 @@ extern const char *zfs_prop_to_name(zfs_prop_t);
 extern int zfs_prop_set(zfs_handle_t *, const char *, const char *);
 extern int zfs_prop_get(zfs_handle_t *, zfs_prop_t, char *, size_t,
     zprop_source_t *, char *, size_t, boolean_t);
+extern int zfs_prop_get_recvd(zfs_handle_t *, const char *, char *, size_t,
+    boolean_t);
 extern int zfs_prop_get_numeric(zfs_handle_t *, zfs_prop_t, uint64_t *,
     zprop_source_t *, char *, size_t);
 extern int zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
@@ -375,10 +415,11 @@ extern int zfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
 extern int zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
     char *propbuf, int proplen, boolean_t literal);
 extern uint64_t zfs_prop_get_int(zfs_handle_t *, zfs_prop_t);
-extern int zfs_prop_inherit(zfs_handle_t *, const char *);
+extern int zfs_prop_inherit(zfs_handle_t *, const char *, boolean_t);
 extern const char *zfs_prop_values(zfs_prop_t);
 extern int zfs_prop_is_string(zfs_prop_t prop);
 extern nvlist_t *zfs_get_user_props(zfs_handle_t *);
+extern nvlist_t *zfs_get_recvd_props(zfs_handle_t *);
 
 typedef struct zprop_list {
 	int		pl_prop;
@@ -386,10 +427,11 @@ typedef struct zprop_list {
 	struct zprop_list *pl_next;
 	boolean_t	pl_all;
 	size_t		pl_width;
+	size_t		pl_recvd_width;
 	boolean_t	pl_fixed;
 } zprop_list_t;
 
-extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **);
+extern int zfs_expand_proplist(zfs_handle_t *, zprop_list_t **, boolean_t);
 extern void zfs_prune_proplist(zfs_handle_t *, uint8_t *);
 
 #define	ZFS_MOUNTPOINT_NONE	"none"
@@ -413,13 +455,24 @@ extern int zprop_get_list(libzfs_handle_t *, char *, zprop_list_t **,
     zfs_type_t);
 extern void zprop_free_list(zprop_list_t *);
 
+#define	ZFS_GET_NCOLS	5
+
+typedef enum {
+	GET_COL_NONE,
+	GET_COL_NAME,
+	GET_COL_PROPERTY,
+	GET_COL_VALUE,
+	GET_COL_RECVD,
+	GET_COL_SOURCE
+} zfs_get_column_t;
+
 /*
  * Functions for printing zfs or zpool properties
  */
 typedef struct zprop_get_cbdata {
 	int cb_sources;
-	int cb_columns[4];
-	int cb_colwidths[5];
+	zfs_get_column_t cb_columns[ZFS_GET_NCOLS];
+	int cb_colwidths[ZFS_GET_NCOLS + 1];
 	boolean_t cb_scripted;
 	boolean_t cb_literal;
 	boolean_t cb_first;
@@ -428,12 +481,8 @@ typedef struct zprop_get_cbdata {
 } zprop_get_cbdata_t;
 
 void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
-    const char *, const char *, zprop_source_t, const char *);
-
-#define	GET_COL_NAME		1
-#define	GET_COL_PROPERTY	2
-#define	GET_COL_VALUE		3
-#define	GET_COL_SOURCE		4
+    const char *, const char *, zprop_source_t, const char *,
+    const char *);
 
 /*
  * Iterator functions.
@@ -444,6 +493,18 @@ extern int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
 extern int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f, void *);
 extern int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
 extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *);
+extern int zfs_iter_snapshots_sorted(zfs_handle_t *, zfs_iter_f, void *);
+
+typedef struct get_all_cb {
+	zfs_handle_t	**cb_handles;
+	size_t		cb_alloc;
+	size_t		cb_used;
+	boolean_t	cb_verbose;
+	int		(*cb_getone)(zfs_handle_t *, void *);
+} get_all_cb_t;
+
+void libzfs_add_handle(get_all_cb_t *, zfs_handle_t *);
+int libzfs_dataset_cmp(const void *, const void *);
 
 /*
  * Functions to create and destroy datasets.
@@ -451,21 +512,54 @@ extern int zfs_iter_snapshots(zfs_handle_t *, zfs_iter_f, void *);
 extern int zfs_create(libzfs_handle_t *, const char *, zfs_type_t,
     nvlist_t *);
 extern int zfs_create_ancestors(libzfs_handle_t *, const char *);
-extern int zfs_destroy(zfs_handle_t *);
-extern int zfs_destroy_snaps(zfs_handle_t *, char *);
+extern int zfs_destroy(zfs_handle_t *, boolean_t);
+extern int zfs_destroy_snaps(zfs_handle_t *, char *, boolean_t);
 extern int zfs_clone(zfs_handle_t *, const char *, nvlist_t *);
 extern int zfs_snapshot(libzfs_handle_t *, const char *, boolean_t, nvlist_t *);
 extern int zfs_rollback(zfs_handle_t *, zfs_handle_t *, boolean_t);
 extern int zfs_rename(zfs_handle_t *, const char *, boolean_t);
-extern int zfs_send(zfs_handle_t *, const char *, const char *,
-    boolean_t, boolean_t, boolean_t, boolean_t, int);
+
+typedef struct sendflags {
+	/* print informational messages (ie, -v was specified) */
+	int verbose : 1;
+
+	/* recursive send  (ie, -R) */
+	int replicate : 1;
+
+	/* for incrementals, do all intermediate snapshots */
+	int doall : 1; /* (ie, -I) */
+
+	/* if dataset is a clone, do incremental from its origin */
+	int fromorigin : 1;
+
+	/* do deduplication */
+	int dedup : 1;
+
+	/* send properties (ie, -p) */
+	int props : 1;
+} sendflags_t;
+
+typedef boolean_t (snapfilter_cb_t)(zfs_handle_t *, void *);
+
+extern int zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
+    sendflags_t flags, int outfd, snapfilter_cb_t filter_func,
+    void *cb_arg, nvlist_t **debugnvp);
+
 extern int zfs_promote(zfs_handle_t *);
+extern int zfs_hold(zfs_handle_t *, const char *, const char *, boolean_t,
+    boolean_t, boolean_t, int, uint64_t, uint64_t);
+extern int zfs_release(zfs_handle_t *, const char *, const char *, boolean_t);
+extern int zfs_get_holds(zfs_handle_t *, nvlist_t **);
+extern uint64_t zvol_volsize_to_reservation(uint64_t, nvlist_t *);
 
 typedef int (*zfs_userspace_cb_t)(void *arg, const char *domain,
     uid_t rid, uint64_t space);
 
-extern int zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type,
-    zfs_userspace_cb_t func, void *arg);
+extern int zfs_userspace(zfs_handle_t *, zfs_userquota_prop_t,
+    zfs_userspace_cb_t, void *);
+
+extern int zfs_get_fsacl(zfs_handle_t *, nvlist_t **);
+extern int zfs_set_fsacl(zfs_handle_t *, boolean_t, nvlist_t *);
 
 typedef struct recvflags {
 	/* print informational messages (ie, -v was specified) */
@@ -474,6 +568,12 @@ typedef struct recvflags {
 	/* the destination is a prefix, not the exact fs (ie, -d) */
 	int isprefix : 1;
 
+	/*
+	 * Only the tail of the sent snapshot path is appended to the
+	 * destination to determine the received snapshot name (ie, -e).
+	 */
+	int istail : 1;
+
 	/* do not actually do the recv, just check if it would work (ie, -n) */
 	int dryrun : 1;
 
@@ -493,6 +593,15 @@ typedef struct recvflags {
 extern int zfs_receive(libzfs_handle_t *, const char *, recvflags_t,
     int, avl_tree_t *);
 
+typedef enum diff_flags {
+	ZFS_DIFF_PARSEABLE = 0x1,
+	ZFS_DIFF_TIMESTAMP = 0x2,
+	ZFS_DIFF_CLASSIFY = 0x4
+} diff_flags_t;
+
+extern int zfs_show_diffs(zfs_handle_t *, int, const char *, const char *,
+    int);
+
 /*
  * Miscellaneous functions.
  */
@@ -534,12 +643,6 @@ extern int zfs_unshareall_nfs(zfs_handle_t *);
 extern int zfs_unshareall_smb(zfs_handle_t *);
 extern int zfs_unshareall_bypath(zfs_handle_t *, const char *);
 extern int zfs_unshareall(zfs_handle_t *);
-extern boolean_t zfs_is_shared_iscsi(zfs_handle_t *);
-extern int zfs_share_iscsi(zfs_handle_t *);
-extern int zfs_unshare_iscsi(zfs_handle_t *);
-#ifdef TODO
-extern int zfs_iscsi_perm_check(libzfs_handle_t *, char *, ucred_t *);
-#endif
 extern int zfs_deleg_share_nfs(libzfs_handle_t *, char *, char *, char *,
     void *, void *, int, zfs_share_op_t);
 
@@ -572,15 +675,10 @@ extern int zpool_in_use(libzfs_handle_t *, int, pool_state_t *, char **,
     boolean_t *);
 
 /*
- * ftyp special.  Read the label from a given device.
+ * Label manipulation.
  */
 extern int zpool_read_label(int, nvlist_t **);
-
-/*
- * Create and remove zvol /dev links.
- */
-extern int zpool_create_zvol_links(zpool_handle_t *);
-extern int zpool_remove_zvol_links(zpool_handle_t *);
+extern int zpool_clear_label(int);
 
 /* is this zvol valid for use as a dump device? */
 extern int zvol_check_dump_config(char *);
@@ -601,10 +699,21 @@ int zfs_smb_acl_rename(libzfs_handle_t *, char *, char *, char *, char *);
 extern int zpool_enable_datasets(zpool_handle_t *, const char *, int);
 extern int zpool_disable_datasets(zpool_handle_t *, boolean_t);
 
-#ifdef	__FreeBSD__
+/*
+ * Mappings between vdev and FRU.
+ */
+extern void libzfs_fru_refresh(libzfs_handle_t *);
+extern const char *libzfs_fru_lookup(libzfs_handle_t *, const char *);
+extern const char *libzfs_fru_devpath(libzfs_handle_t *, const char *);
+extern boolean_t libzfs_fru_compare(libzfs_handle_t *, const char *,
+    const char *);
+extern boolean_t libzfs_fru_notself(libzfs_handle_t *, const char *);
+extern int zpool_fru_set(zpool_handle_t *, uint64_t, const char *);
+
+#ifndef sun
 extern int zmount(const char *, const char *, int, char *, char *, int, char *,
     int);
-#endif
+#endif	/* !sun */
 
 #ifdef	__cplusplus
 }
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_changelist.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_changelist.c
index 6fa1967..4328d38 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_changelist.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_changelist.c
@@ -20,7 +20,7 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  *
  * Portions Copyright 2007 Ramprakash Jelari
@@ -116,32 +116,7 @@ changelist_prefix(prop_changelist_t *clp)
 		if (getzoneid() == GLOBAL_ZONEID && cn->cn_zoned)
 			continue;
 
-		if (ZFS_IS_VOLUME(cn->cn_handle)) {
-			switch (clp->cl_realprop) {
-			case ZFS_PROP_NAME:
-				/*
-				 * If this was a rename, unshare the zvol, and
-				 * remove the /dev/zvol links.
-				 */
-				(void) zfs_unshare_iscsi(cn->cn_handle);
-
-				if (zvol_remove_link(cn->cn_handle->zfs_hdl,
-				    cn->cn_handle->zfs_name) != 0) {
-					ret = -1;
-					cn->cn_needpost = B_FALSE;
-					(void) zfs_share_iscsi(cn->cn_handle);
-				}
-				break;
-
-			case ZFS_PROP_VOLSIZE:
-				/*
-				 * If this was a change to the volume size, we
-				 * need to unshare and reshare the volume.
-				 */
-				(void) zfs_unshare_iscsi(cn->cn_handle);
-				break;
-			}
-		} else {
+		if (!ZFS_IS_VOLUME(cn->cn_handle)) {
 			/*
 			 * Do the property specific processing.
 			 */
@@ -234,32 +209,8 @@ changelist_postfix(prop_changelist_t *clp)
 
 		zfs_refresh_properties(cn->cn_handle);
 
-		if (ZFS_IS_VOLUME(cn->cn_handle)) {
-			/*
-			 * If we're doing a rename, recreate the /dev/zvol
-			 * links.
-			 */
-			if (clp->cl_realprop == ZFS_PROP_NAME &&
-			    zvol_create_link(cn->cn_handle->zfs_hdl,
-			    cn->cn_handle->zfs_name) != 0) {
-				errors++;
-			} else if (cn->cn_shared ||
-			    clp->cl_prop == ZFS_PROP_SHAREISCSI) {
-				if (zfs_prop_get(cn->cn_handle,
-				    ZFS_PROP_SHAREISCSI, shareopts,
-				    sizeof (shareopts), NULL, NULL, 0,
-				    B_FALSE) == 0 &&
-				    strcmp(shareopts, "off") == 0) {
-					errors +=
-					    zfs_unshare_iscsi(cn->cn_handle);
-				} else {
-					errors +=
-					    zfs_share_iscsi(cn->cn_handle);
-				}
-			}
-
+		if (ZFS_IS_VOLUME(cn->cn_handle))
 			continue;
-		}
 
 		/*
 		 * Remount if previously mounted or mountpoint was legacy,
@@ -508,6 +459,14 @@ change_one(zfs_handle_t *zhp, void *data)
 			    &idx);
 			uu_list_insert(clp->cl_list, cn, idx);
 		} else {
+			/*
+			 * Add this child to beginning of the list. Children
+			 * below this one in the hierarchy will get added above
+			 * this one in the list. This produces a list in
+			 * reverse dataset name order.
+			 * This is necessary when the original mountpoint
+			 * is legacy or none.
+			 */
 			ASSERT(!clp->cl_alldependents);
 			verify(uu_list_insert_before(clp->cl_list,
 			    uu_list_first(clp->cl_list), cn) == 0);
@@ -574,6 +533,7 @@ changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
 	zfs_handle_t *temp;
 	char property[ZFS_MAXPROPLEN];
 	uu_compare_fn_t *compare = NULL;
+	boolean_t legacy = B_FALSE;
 
 	if ((clp = zfs_alloc(zhp->zfs_hdl, sizeof (prop_changelist_t))) == NULL)
 		return (NULL);
@@ -586,8 +546,19 @@ changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
 	if (prop == ZFS_PROP_NAME || prop == ZFS_PROP_ZONED ||
 	    prop == ZFS_PROP_MOUNTPOINT || prop == ZFS_PROP_SHARENFS ||
 	    prop == ZFS_PROP_SHARESMB) {
-		compare = compare_mountpoints;
-		clp->cl_sorted = B_TRUE;
+
+		if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
+		    property, sizeof (property),
+		    NULL, NULL, 0, B_FALSE) == 0 &&
+		    (strcmp(property, "legacy") == 0 ||
+		    strcmp(property, "none") == 0)) {
+
+			legacy = B_TRUE;
+		}
+		if (!legacy) {
+			compare = compare_mountpoints;
+			clp->cl_sorted = B_TRUE;
+		}
 	}
 
 	clp->cl_pool = uu_list_pool_create("changelist_pool",
@@ -638,8 +609,7 @@ changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
 
 	if (clp->cl_prop != ZFS_PROP_MOUNTPOINT &&
 	    clp->cl_prop != ZFS_PROP_SHARENFS &&
-	    clp->cl_prop != ZFS_PROP_SHARESMB &&
-	    clp->cl_prop != ZFS_PROP_SHAREISCSI)
+	    clp->cl_prop != ZFS_PROP_SHARESMB)
 		return (clp);
 
 	/*
@@ -695,6 +665,12 @@ changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
 		(void) uu_list_find(clp->cl_list, cn, NULL, &idx);
 		uu_list_insert(clp->cl_list, cn, idx);
 	} else {
+		/*
+		 * Add the target dataset to the end of the list.
+		 * The list is not really unsorted. The list will be
+		 * in reverse dataset name order. This is necessary
+		 * when the original mountpoint is legacy or none.
+		 */
 		verify(uu_list_insert_after(clp->cl_list,
 		    uu_list_last(clp->cl_list), cn) == 0);
 	}
@@ -703,11 +679,7 @@ changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
 	 * If the mountpoint property was previously 'legacy', or 'none',
 	 * record it as the behavior of changelist_postfix() will be different.
 	 */
-	if ((clp->cl_prop == ZFS_PROP_MOUNTPOINT) &&
-	    (zfs_prop_get(zhp, prop, property, sizeof (property),
-	    NULL, NULL, 0, B_FALSE) == 0 &&
-	    (strcmp(property, "legacy") == 0 ||
-	    strcmp(property, "none") == 0))) {
+	if ((clp->cl_prop == ZFS_PROP_MOUNTPOINT) && legacy) {
 		/*
 		 * do not automatically mount ex-legacy datasets if
 		 * we specifically set canmount to noauto
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_config.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_config.c
index 94640d1..dc27238 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_config.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_config.c
@@ -19,12 +19,10 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 /*
  * The pool configuration repository is stored in /etc/zfs/zpool.cache as a
  * single packed nvlist.  While it would be nice to just read in this
@@ -313,21 +311,33 @@ zpool_iter(libzfs_handle_t *hdl, zpool_iter_f func, void *data)
 	zpool_handle_t *zhp;
 	int ret;
 
-	if (namespace_reload(hdl) != 0)
+	/*
+	 * If someone makes a recursive call to zpool_iter(), we want to avoid
+	 * refreshing the namespace because that will invalidate the parent
+	 * context.  We allow recursive calls, but simply re-use the same
+	 * namespace AVL tree.
+	 */
+	if (!hdl->libzfs_pool_iter && namespace_reload(hdl) != 0)
 		return (-1);
 
+	hdl->libzfs_pool_iter++;
 	for (cn = uu_avl_first(hdl->libzfs_ns_avl); cn != NULL;
 	    cn = uu_avl_next(hdl->libzfs_ns_avl, cn)) {
 
-		if (zpool_open_silent(hdl, cn->cn_name, &zhp) != 0)
+		if (zpool_open_silent(hdl, cn->cn_name, &zhp) != 0) {
+			hdl->libzfs_pool_iter--;
 			return (-1);
+		}
 
 		if (zhp == NULL)
 			continue;
 
-		if ((ret = func(zhp, data)) != 0)
+		if ((ret = func(zhp, data)) != 0) {
+			hdl->libzfs_pool_iter--;
 			return (ret);
+		}
 	}
+	hdl->libzfs_pool_iter--;
 
 	return (0);
 }
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c
index 803746a..824834e 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c
@@ -20,11 +20,10 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
  */
 
-#include <assert.h>
 #include <ctype.h>
 #include <errno.h>
 #include <libintl.h>
@@ -38,13 +37,13 @@
 #include <fcntl.h>
 #include <sys/mntent.h>
 #include <sys/mount.h>
-#include <sys/avl.h>
 #include <priv.h>
 #include <pwd.h>
 #include <grp.h>
 #include <stddef.h>
 #include <idmap.h>
 
+#include <sys/dnode.h>
 #include <sys/spa.h>
 #include <sys/zap.h>
 #include <sys/misc.h>
@@ -55,7 +54,6 @@
 #include "libzfs_impl.h"
 #include "zfs_deleg.h"
 
-static int zvol_create_link_common(libzfs_handle_t *, const char *, int);
 static int userquota_propname_decode(const char *propname, boolean_t zoned,
     zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp);
 
@@ -126,13 +124,14 @@ path_to_str(const char *path, int types)
  * provide a more meaningful error message.  We call zfs_error_aux() to
  * explain exactly why the name was not valid.
  */
-static int
+int
 zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
     boolean_t modifying)
 {
 	namecheck_err_t why;
 	char what;
 
+	(void) zfs_prop_get_table();
 	if (dataset_namecheck(path, &why, &what) != 0) {
 		if (hdl != NULL) {
 			switch (why) {
@@ -318,6 +317,7 @@ zpool_free_handles(libzfs_handle_t *hdl)
 /*
  * Utility function to gather stats (objset and zpl) for the given object.
  */
+static int
 get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc)
 {
 	libzfs_handle_t *hdl = zhp->zfs_hdl;
@@ -336,6 +336,44 @@ get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc)
 	return (0);
 }
 
+/*
+ * Utility function to get the received properties of the given object.
+ */
+static int
+get_recvd_props_ioctl(zfs_handle_t *zhp)
+{
+	libzfs_handle_t *hdl = zhp->zfs_hdl;
+	nvlist_t *recvdprops;
+	zfs_cmd_t zc = { 0 };
+	int err;
+
+	if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
+		return (-1);
+
+	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
+
+	while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) {
+		if (errno == ENOMEM) {
+			if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
+				return (-1);
+			}
+		} else {
+			zcmd_free_nvlists(&zc);
+			return (-1);
+		}
+	}
+
+	err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops);
+	zcmd_free_nvlists(&zc);
+	if (err != 0)
+		return (-1);
+
+	nvlist_free(zhp->zfs_recvd_props);
+	zhp->zfs_recvd_props = recvdprops;
+
+	return (0);
+}
+
 static int
 put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc)
 {
@@ -397,70 +435,8 @@ zfs_refresh_properties(zfs_handle_t *zhp)
 static int
 make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc)
 {
-	char *logstr;
-	libzfs_handle_t *hdl = zhp->zfs_hdl;
-
-	/*
-	 * Preserve history log string.
-	 * any changes performed here will be
-	 * logged as an internal event.
-	 */
-	logstr = zhp->zfs_hdl->libzfs_log_str;
-	zhp->zfs_hdl->libzfs_log_str = NULL;
-
-top:
-	if (put_stats_zhdl(zhp, zc) != 0) {
-		zhp->zfs_hdl->libzfs_log_str = logstr;
+	if (put_stats_zhdl(zhp, zc) != 0)
 		return (-1);
-	}
-
-
-	if (zhp->zfs_dmustats.dds_inconsistent) {
-		zfs_cmd_t zc2 = { 0 };
-
-		/*
-		 * If it is dds_inconsistent, then we've caught it in
-		 * the middle of a 'zfs receive' or 'zfs destroy', and
-		 * it is inconsistent from the ZPL's point of view, so
-		 * can't be mounted.  However, it could also be that we
-		 * have crashed in the middle of one of those
-		 * operations, in which case we need to get rid of the
-		 * inconsistent state.  We do that by either rolling
-		 * back to the previous snapshot (which will fail if
-		 * there is none), or destroying the filesystem.  Note
-		 * that if we are still in the middle of an active
-		 * 'receive' or 'destroy', then the rollback and destroy
-		 * will fail with EBUSY and we will drive on as usual.
-		 */
-
-		(void) strlcpy(zc2.zc_name, zhp->zfs_name,
-		    sizeof (zc2.zc_name));
-
-		if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) {
-			(void) zvol_remove_link(hdl, zhp->zfs_name);
-			zc2.zc_objset_type = DMU_OST_ZVOL;
-		} else {
-			zc2.zc_objset_type = DMU_OST_ZFS;
-		}
-
-		/*
-		 * If we can successfully destroy it, pretend that it
-		 * never existed.
-		 */
-		if (ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc2) == 0) {
-			zhp->zfs_hdl->libzfs_log_str = logstr;
-			errno = ENOENT;
-			return (-1);
-		}
-		/* If we can successfully roll it back, reset the stats */
-		if (ioctl(hdl->libzfs_fd, ZFS_IOC_ROLLBACK, &zc2) == 0) {
-			if (get_stats_ioctl(zhp, zc) != 0) {
-				zhp->zfs_hdl->libzfs_log_str = logstr;
-				return (-1);
-			}
-			goto top;
-		}
-	}
 
 	/*
 	 * We've managed to open the dataset and gather statistics.  Determine
@@ -482,8 +458,9 @@ top:
 	else
 		abort();	/* we should never see any other types */
 
-	zhp->zfs_hdl->libzfs_log_str = logstr;
-	zhp->zpool_hdl = zpool_handle(zhp);
+	if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL)
+		return (-1);
+
 	return (0);
 }
 
@@ -585,6 +562,7 @@ zfs_close(zfs_handle_t *zhp)
 		free(zhp->zfs_mntopts);
 	nvlist_free(zhp->zfs_props);
 	nvlist_free(zhp->zfs_user_props);
+	nvlist_free(zhp->zfs_recvd_props);
 	free(zhp);
 }
 
@@ -878,9 +856,14 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 				goto error;
 			}
 
+			/*
+			 * Encode the prop name as
+			 * userquota@<hex-rid>-domain, to make it easy
+			 * for the kernel to decode.
+			 */
 			(void) snprintf(newpropname, sizeof (newpropname),
-			    "%s%s", zfs_userquota_prop_prefixes[uqtype],
-			    domain);
+			    "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype],
+			    (longlong_t)rid, domain);
 			valary[0] = uqtype;
 			valary[1] = rid;
 			valary[2] = intval;
@@ -956,19 +939,66 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 			}
 			break;
 
-		case ZFS_PROP_SHAREISCSI:
-			if (strcmp(strval, "off") != 0 &&
-			    strcmp(strval, "on") != 0 &&
-			    strcmp(strval, "type=disk") != 0) {
-				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-				    "'%s' must be 'on', 'off', or 'type=disk'"),
-				    propname);
-				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
-				goto error;
+		case ZFS_PROP_MLSLABEL:
+		{
+#ifdef sun
+			/*
+			 * Verify the mlslabel string and convert to
+			 * internal hex label string.
+			 */
+
+			m_label_t *new_sl;
+			char *hex = NULL;	/* internal label string */
+
+			/* Default value is already OK. */
+			if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
+				break;
+
+			/* Verify the label can be converted to binary form */
+			if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) ||
+			    (str_to_label(strval, &new_sl, MAC_LABEL,
+			    L_NO_CORRECTION, NULL) == -1)) {
+				goto badlabel;
+			}
+
+			/* Now translate to hex internal label string */
+			if (label_to_str(new_sl, &hex, M_INTERNAL,
+			    DEF_NAMES) != 0) {
+				if (hex)
+					free(hex);
+				goto badlabel;
 			}
+			m_label_free(new_sl);
+
+			/* If string is already in internal form, we're done. */
+			if (strcmp(strval, hex) == 0) {
+				free(hex);
+				break;
+			}
+
+			/* Replace the label string with the internal form. */
+			(void) nvlist_remove(ret, zfs_prop_to_name(prop),
+			    DATA_TYPE_STRING);
+			verify(nvlist_add_string(ret, zfs_prop_to_name(prop),
+			    hex) == 0);
+			free(hex);
 
 			break;
 
+badlabel:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "invalid mlslabel '%s'"), strval);
+			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
+			m_label_free(new_sl);	/* OK if null */
+#else	/* !sun */
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "mlslabel is not supported on FreeBSD"));
+			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
+#endif	/* !sun */
+			goto error;
+
+		}
+
 		case ZFS_PROP_MOUNTPOINT:
 		{
 			namecheck_err_t why;
@@ -1187,39 +1217,130 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 		(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
 		goto error;
 	}
+	return (ret);
+
+error:
+	nvlist_free(ret);
+	return (NULL);
+}
+
+int
+zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl)
+{
+	uint64_t old_volsize;
+	uint64_t new_volsize;
+	uint64_t old_reservation;
+	uint64_t new_reservation;
+	zfs_prop_t resv_prop;
 
 	/*
 	 * If this is an existing volume, and someone is setting the volsize,
 	 * make sure that it matches the reservation, or add it if necessary.
 	 */
-	if (zhp != NULL && type == ZFS_TYPE_VOLUME &&
-	    nvlist_lookup_uint64(ret, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
-	    &intval) == 0) {
-		uint64_t old_volsize = zfs_prop_get_int(zhp,
-		    ZFS_PROP_VOLSIZE);
-		uint64_t old_reservation;
-		uint64_t new_reservation;
-		zfs_prop_t resv_prop;
+	old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
+	if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
+		return (-1);
+	old_reservation = zfs_prop_get_int(zhp, resv_prop);
+	if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) !=
+	    old_reservation) || nvlist_lookup_uint64(nvl,
+	    zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) {
+		return (0);
+	}
+	if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
+	    &new_volsize) != 0)
+		return (-1);
+	new_reservation = zvol_volsize_to_reservation(new_volsize,
+	    zhp->zfs_props);
+	if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop),
+	    new_reservation) != 0) {
+		(void) no_memory(zhp->zfs_hdl);
+		return (-1);
+	}
+	return (1);
+}
 
-		if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
-			goto error;
-		old_reservation = zfs_prop_get_int(zhp, resv_prop);
+void
+zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err,
+    char *errbuf)
+{
+	switch (err) {
 
-		if (old_volsize == old_reservation &&
-		    nvlist_lookup_uint64(ret, zfs_prop_to_name(resv_prop),
-		    &new_reservation) != 0) {
-			if (nvlist_add_uint64(ret,
-			    zfs_prop_to_name(resv_prop), intval) != 0) {
-				(void) no_memory(hdl);
-				goto error;
-			}
+	case ENOSPC:
+		/*
+		 * For quotas and reservations, ENOSPC indicates
+		 * something different; setting a quota or reservation
+		 * doesn't use any disk space.
+		 */
+		switch (prop) {
+		case ZFS_PROP_QUOTA:
+		case ZFS_PROP_REFQUOTA:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "size is less than current used or "
+			    "reserved space"));
+			(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
+			break;
+
+		case ZFS_PROP_RESERVATION:
+		case ZFS_PROP_REFRESERVATION:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "size is greater than available space"));
+			(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
+			break;
+
+		default:
+			(void) zfs_standard_error(hdl, err, errbuf);
+			break;
 		}
-	}
-	return (ret);
+		break;
 
-error:
-	nvlist_free(ret);
-	return (NULL);
+	case EBUSY:
+		(void) zfs_standard_error(hdl, EBUSY, errbuf);
+		break;
+
+	case EROFS:
+		(void) zfs_error(hdl, EZFS_DSREADONLY, errbuf);
+		break;
+
+	case ENOTSUP:
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+		    "pool and or dataset must be upgraded to set this "
+		    "property or value"));
+		(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
+		break;
+
+	case ERANGE:
+		if (prop == ZFS_PROP_COMPRESSION) {
+			(void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "property setting is not allowed on "
+			    "bootable datasets"));
+			(void) zfs_error(hdl, EZFS_NOTSUP, errbuf);
+		} else {
+			(void) zfs_standard_error(hdl, err, errbuf);
+		}
+		break;
+
+	case EINVAL:
+		if (prop == ZPROP_INVAL) {
+			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
+		} else {
+			(void) zfs_standard_error(hdl, err, errbuf);
+		}
+		break;
+
+	case EOVERFLOW:
+		/*
+		 * This platform can't address a volume this big.
+		 */
+#ifdef _ILP32
+		if (prop == ZFS_PROP_VOLSIZE) {
+			(void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf);
+			break;
+		}
+#endif
+		/* FALLTHROUGH */
+	default:
+		(void) zfs_standard_error(hdl, err, errbuf);
+	}
 }
 
 /*
@@ -1237,6 +1358,7 @@ zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
 	zfs_prop_t prop;
 	boolean_t do_prefix;
 	uint64_t idx;
+	int added_resv;
 
 	(void) snprintf(errbuf, sizeof (errbuf),
 	    dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
@@ -1260,17 +1382,22 @@ zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
 	/* We don't support those properties on FreeBSD. */
 	switch (prop) {
 	case ZFS_PROP_DEVICES:
-	case ZFS_PROP_SHAREISCSI:
 	case ZFS_PROP_ISCSIOPTIONS:
 	case ZFS_PROP_XATTR:
 	case ZFS_PROP_VSCAN:
 	case ZFS_PROP_NBMAND:
+	case ZFS_PROP_MLSLABEL:
 		(void) snprintf(errbuf, sizeof (errbuf),
 		    "property '%s' not supported on FreeBSD", propname);
 		ret = zfs_error(hdl, EZFS_PERM, errbuf);
 		goto error;
 	}
 
+	if (prop == ZFS_PROP_VOLSIZE) {
+		if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1)
+			goto error;
+	}
+
 	if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL)
 		goto error;
 
@@ -1304,78 +1431,22 @@ zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
 	ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
 
 	if (ret != 0) {
-		switch (errno) {
-
-		case ENOSPC:
-			/*
-			 * For quotas and reservations, ENOSPC indicates
-			 * something different; setting a quota or reservation
-			 * doesn't use any disk space.
-			 */
-			switch (prop) {
-			case ZFS_PROP_QUOTA:
-			case ZFS_PROP_REFQUOTA:
-				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-				    "size is less than current used or "
-				    "reserved space"));
-				(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
-				break;
-
-			case ZFS_PROP_RESERVATION:
-			case ZFS_PROP_REFRESERVATION:
-				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-				    "size is greater than available space"));
-				(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
-				break;
-
-			default:
-				(void) zfs_standard_error(hdl, errno, errbuf);
-				break;
-			}
-			break;
-
-		case EBUSY:
-			if (prop == ZFS_PROP_VOLBLOCKSIZE)
-				(void) zfs_error(hdl, EZFS_VOLHASDATA, errbuf);
-			else
-				(void) zfs_standard_error(hdl, EBUSY, errbuf);
-			break;
-
-		case EROFS:
-			(void) zfs_error(hdl, EZFS_DSREADONLY, errbuf);
-			break;
-
-		case ENOTSUP:
-			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-			    "pool and or dataset must be upgraded to set this "
-			    "property or value"));
-			(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
-			break;
-
-		case ERANGE:
-			if (prop == ZFS_PROP_COMPRESSION) {
-				(void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-				    "property setting is not allowed on "
-				    "bootable datasets"));
-				(void) zfs_error(hdl, EZFS_NOTSUP, errbuf);
-			} else {
-				(void) zfs_standard_error(hdl, errno, errbuf);
-			}
-			break;
-
-		case EOVERFLOW:
-			/*
-			 * This platform can't address a volume this big.
-			 */
-#ifdef _ILP32
-			if (prop == ZFS_PROP_VOLSIZE) {
-				(void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf);
-				break;
-			}
-#endif
-			/* FALLTHROUGH */
-		default:
-			(void) zfs_standard_error(hdl, errno, errbuf);
+		zfs_setprop_error(hdl, prop, errno, errbuf);
+		if (added_resv && errno == ENOSPC) {
+			/* clean up the volsize property we tried to set */
+			uint64_t old_volsize = zfs_prop_get_int(zhp,
+			    ZFS_PROP_VOLSIZE);
+			nvlist_free(nvl);
+			zcmd_free_nvlists(&zc);
+			if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
+				goto error;
+			if (nvlist_add_uint64(nvl,
+			    zfs_prop_to_name(ZFS_PROP_VOLSIZE),
+			    old_volsize) != 0)
+				goto error;
+			if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0)
+				goto error;
+			(void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
 		}
 	} else {
 		if (do_prefix)
@@ -1398,10 +1469,11 @@ error:
 }
 
 /*
- * Given a property, inherit the value from the parent dataset.
+ * Given a property, inherit the value from the parent dataset, or if received
+ * is TRUE, revert to the received value, if any.
  */
 int
-zfs_prop_inherit(zfs_handle_t *zhp, const char *propname)
+zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received)
 {
 	zfs_cmd_t zc = { 0 };
 	int ret;
@@ -1413,6 +1485,7 @@ zfs_prop_inherit(zfs_handle_t *zhp, const char *propname)
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 	    "cannot inherit %s for '%s'"), propname, zhp->zfs_name);
 
+	zc.zc_cookie = received;
 	if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) {
 		/*
 		 * For user properties, the amount of work we have to do is very
@@ -1439,7 +1512,7 @@ zfs_prop_inherit(zfs_handle_t *zhp, const char *propname)
 	if (zfs_prop_readonly(prop))
 		return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf));
 
-	if (!zfs_prop_inheritable(prop))
+	if (!zfs_prop_inheritable(prop) && !received)
 		return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf));
 
 	/*
@@ -1449,7 +1522,7 @@ zfs_prop_inherit(zfs_handle_t *zhp, const char *propname)
 		return (zfs_error(hdl, EZFS_PROPTYPE, errbuf));
 
 	/*
-	 * Normalize the name, to get rid of shorthand abbrevations.
+	 * Normalize the name, to get rid of shorthand abbreviations.
 	 */
 	propname = zfs_prop_to_name(prop);
 	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
@@ -1544,6 +1617,26 @@ getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
 	return (value);
 }
 
+static boolean_t
+zfs_is_recvd_props_mode(zfs_handle_t *zhp)
+{
+	return (zhp->zfs_props == zhp->zfs_recvd_props);
+}
+
+static void
+zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
+{
+	*cookie = (uint64_t)(uintptr_t)zhp->zfs_props;
+	zhp->zfs_props = zhp->zfs_recvd_props;
+}
+
+static void
+zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
+{
+	zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie;
+	*cookie = 0;
+}
+
 /*
  * Internal function for getting a numeric property.  Both zfs_prop_get() and
  * zfs_prop_get_int() are built using this interface.
@@ -1562,6 +1655,7 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
 	struct mnttab mnt;
 	char *mntopt_on = NULL;
 	char *mntopt_off = NULL;
+	boolean_t received = zfs_is_recvd_props_mode(zhp);
 
 	*source = NULL;
 
@@ -1637,6 +1731,9 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
 	case ZFS_PROP_NBMAND:
 		*val = getprop_uint64(zhp, prop, source);
 
+		if (received)
+			break;
+
 		if (hasmntopt(&mnt, mntopt_on) && !*val) {
 			*val = B_TRUE;
 			if (src)
@@ -1649,22 +1746,17 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
 		break;
 
 	case ZFS_PROP_CANMOUNT:
-		*val = getprop_uint64(zhp, prop, source);
-		if (*val != ZFS_CANMOUNT_ON)
-			*source = zhp->zfs_name;
-		else
-			*source = "";	/* default */
-		break;
-
+	case ZFS_PROP_VOLSIZE:
 	case ZFS_PROP_QUOTA:
 	case ZFS_PROP_REFQUOTA:
 	case ZFS_PROP_RESERVATION:
 	case ZFS_PROP_REFRESERVATION:
 		*val = getprop_uint64(zhp, prop, source);
-		if (*val == 0)
-			*source = "";	/* default */
-		else
+
+		if (*source == NULL) {
+			/* not default, must be local */
 			*source = zhp->zfs_name;
+		}
 		break;
 
 	case ZFS_PROP_MOUNTED:
@@ -1685,21 +1777,13 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
 		(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
 		if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) {
 			zcmd_free_nvlists(&zc);
-			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
-			    "unable to get %s property"),
-			    zfs_prop_to_name(prop));
-			return (zfs_error(zhp->zfs_hdl, EZFS_BADVERSION,
-			    dgettext(TEXT_DOMAIN, "internal error")));
+			return (-1);
 		}
 		if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 ||
 		    nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop),
 		    val) != 0) {
 			zcmd_free_nvlists(&zc);
-			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
-			    "unable to get %s property"),
-			    zfs_prop_to_name(prop));
-			return (zfs_error(zhp->zfs_hdl, EZFS_NOMEM,
-			    dgettext(TEXT_DOMAIN, "internal error")));
+			return (-1);
 		}
 		if (zplprops)
 			nvlist_free(zplprops);
@@ -1714,11 +1798,11 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
 			/*
 			 * If we tried to use a default value for a
 			 * readonly property, it means that it was not
-			 * present; return an error.
+			 * present.
 			 */
 			if (zfs_prop_readonly(prop) &&
-			    *source && (*source)[0] == '\0') {
-				return (-1);
+			    *source != NULL && (*source)[0] == '\0') {
+				*source = NULL;
 			}
 			break;
 
@@ -1748,6 +1832,8 @@ get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source,
 		*srctype = ZPROP_SRC_NONE;
 	} else if (source[0] == '\0') {
 		*srctype = ZPROP_SRC_DEFAULT;
+	} else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) {
+		*srctype = ZPROP_SRC_RECEIVED;
 	} else {
 		if (strcmp(source, zhp->zfs_name) == 0) {
 			*srctype = ZPROP_SRC_LOCAL;
@@ -1759,6 +1845,43 @@ get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source,
 
 }
 
+int
+zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf,
+    size_t proplen, boolean_t literal)
+{
+	zfs_prop_t prop;
+	int err = 0;
+
+	if (zhp->zfs_recvd_props == NULL)
+		if (get_recvd_props_ioctl(zhp) != 0)
+			return (-1);
+
+	prop = zfs_name_to_prop(propname);
+
+	if (prop != ZPROP_INVAL) {
+		uint64_t cookie;
+		if (!nvlist_exists(zhp->zfs_recvd_props, propname))
+			return (-1);
+		zfs_set_recvd_props_mode(zhp, &cookie);
+		err = zfs_prop_get(zhp, prop, propbuf, proplen,
+		    NULL, NULL, 0, literal);
+		zfs_unset_recvd_props_mode(zhp, &cookie);
+	} else if (zfs_prop_userquota(propname)) {
+		return (-1);
+	} else {
+		nvlist_t *propval;
+		char *recvdval;
+		if (nvlist_lookup_nvlist(zhp->zfs_recvd_props,
+		    propname, &propval) != 0)
+			return (-1);
+		verify(nvlist_lookup_string(propval, ZPROP_VALUE,
+		    &recvdval) == 0);
+		(void) strlcpy(propbuf, recvdval, proplen);
+	}
+
+	return (err == 0 ? 0 : -1);
+}
+
 /*
  * Retrieve a property from the given object.  If 'literal' is specified, then
  * numbers are left as exact values.  Otherwise, numbers are converted to a
@@ -1774,6 +1897,7 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
 	uint64_t val;
 	char *str;
 	const char *strval;
+	boolean_t received = zfs_is_recvd_props_mode(zhp);
 
 	/*
 	 * Check to see if this property applies to our object
@@ -1781,6 +1905,9 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
 	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
 		return (-1);
 
+	if (received && zfs_prop_readonly(prop))
+		return (-1);
+
 	if (src)
 		*src = ZPROP_SRC_NONE;
 
@@ -1820,10 +1947,22 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
 		if (str[0] == '/') {
 			char buf[MAXPATHLEN];
 			char *root = buf;
-			const char *relpath = zhp->zfs_name + strlen(source);
+			const char *relpath;
 
-			if (relpath[0] == '/')
-				relpath++;
+			/*
+			 * If we inherit the mountpoint, even from a dataset
+			 * with a received value, the source will be the path of
+			 * the dataset we inherit from. If source is
+			 * ZPROP_SOURCE_VAL_RECVD, the received value is not
+			 * inherited.
+			 */
+			if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) {
+				relpath = "";
+			} else {
+				relpath = zhp->zfs_name + strlen(source);
+				if (relpath[0] == '/')
+					relpath++;
+			}
 
 			if ((zpool_get_prop(zhp->zpool_hdl,
 			    ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) ||
@@ -1902,8 +2041,9 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
 	case ZFS_PROP_COMPRESSRATIO:
 		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
 			return (-1);
-		(void) snprintf(propbuf, proplen, "%lld.%02lldx", (longlong_t)
-		    val / 100, (longlong_t)val % 100);
+		(void) snprintf(propbuf, proplen, "%llu.%02llux",
+		    (u_longlong_t)(val / 100),
+		    (u_longlong_t)(val % 100));
 		break;
 
 	case ZFS_PROP_TYPE:
@@ -1948,6 +2088,48 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
 		(void) strlcpy(propbuf, zhp->zfs_name, proplen);
 		break;
 
+	case ZFS_PROP_MLSLABEL:
+		{
+#ifdef sun
+			m_label_t *new_sl = NULL;
+			char *ascii = NULL;	/* human readable label */
+
+			(void) strlcpy(propbuf,
+			    getprop_string(zhp, prop, &source), proplen);
+
+			if (literal || (strcasecmp(propbuf,
+			    ZFS_MLSLABEL_DEFAULT) == 0))
+				break;
+
+			/*
+			 * Try to translate the internal hex string to
+			 * human-readable output.  If there are any
+			 * problems just use the hex string.
+			 */
+
+			if (str_to_label(propbuf, &new_sl, MAC_LABEL,
+			    L_NO_CORRECTION, NULL) == -1) {
+				m_label_free(new_sl);
+				break;
+			}
+
+			if (label_to_str(new_sl, &ascii, M_LABEL,
+			    DEF_NAMES) != 0) {
+				if (ascii)
+					free(ascii);
+				m_label_free(new_sl);
+				break;
+			}
+			m_label_free(new_sl);
+
+			(void) strlcpy(propbuf, ascii, proplen);
+			free(ascii);
+#else	/* !sun */
+			propbuf[0] = '\0';
+#endif	/* !sun */
+		}
+		break;
+
 	default:
 		switch (zfs_prop_get_type(prop)) {
 		case PROP_TYPE_NUMBER:
@@ -2044,14 +2226,11 @@ idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser,
     char **domainp, idmap_rid_t *ridp)
 {
 #ifdef sun
-	idmap_handle_t *idmap_hdl = NULL;
 	idmap_get_handle_t *get_hdl = NULL;
 	idmap_stat status;
 	int err = EINVAL;
 
-	if (idmap_init(&idmap_hdl) != IDMAP_SUCCESS)
-		goto out;
-	if (idmap_get_create(idmap_hdl, &get_hdl) != IDMAP_SUCCESS)
+	if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS)
 		goto out;
 
 	if (isuser) {
@@ -2070,29 +2249,12 @@ idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser,
 out:
 	if (get_hdl)
 		idmap_get_destroy(get_hdl);
-	if (idmap_hdl)
-		(void) idmap_fini(idmap_hdl);
 	return (err);
 #else	/* !sun */
 	assert(!"invalid code path");
 #endif	/* !sun */
 }
 
-#ifndef sun
-/* Check if a string contains only digits */
-static int
-string_is_digits(char *cp)
-{
-	int i;
-
-	for(i = 0; i < strlen(cp); i++)
-	    if(!isdigit(cp[i]))
-		return (0);
-	return (1);
-}
-
-#endif	/* !sun */
-
 /*
  * convert the propname into parameters needed by kernel
  * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
@@ -2131,7 +2293,6 @@ userquota_propname_decode(const char *propname, boolean_t zoned,
 		 * turned into S-1-domainID-RID.
 		 */
 		directory_error_t e;
-
 		if (zoned && getzoneid() == GLOBAL_ZONEID)
 			return (ENOENT);
 		if (isuser) {
@@ -2150,7 +2311,7 @@ userquota_propname_decode(const char *propname, boolean_t zoned,
 		cp = numericsid;
 		/* will be further decoded below */
 #else	/* !sun */
-                return (ENOENT);
+		return (ENOENT);
 #endif	/* !sun */
 	}
 
@@ -2169,15 +2330,7 @@ userquota_propname_decode(const char *propname, boolean_t zoned,
 		}
 		if (errno != 0 || *end != '\0')
 			return (EINVAL);
-#ifdef sun
 	} else if (!isdigit(*cp)) {
-#else	/* sun */
-	/*
-	 * In FreeBSD user and group names can begin with a digit so treat
-	 * as a uid/gid if string contains digits only
-	 */
-	} else if (!string_is_digits(cp)) {
-#endif	/* sun */
 		/*
 		 * It's a user/group name (eg "user") that needs to be
 		 * turned into a uid/gid
@@ -2309,13 +2462,6 @@ top:
 	(void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name));
 	rc = ioctl(zhp->zfs_hdl->libzfs_fd, arg, zc);
 
-	/*
-	 * FreeBSD compatibility with pre-v15 kernel module.
-	 * Ignore private dataset names.
-	 */
-	if (strchr(zc->zc_name, '$') != NULL)
-		rc = 0;
-
 	if (rc == -1) {
 		switch (errno) {
 		case ENOMEM:
@@ -2363,14 +2509,6 @@ zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data)
 
 	while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_DATASET_LIST_NEXT,
 	    &zc)) == 0) {
-
-		/*
-		 * FreeBSD compatibility with pre-v15 kernel module.
-		 * Ignore private dataset names.
-		 */
-		if (strchr(zc.zc_name, '$') != NULL)
-			continue;
-
 		/*
 		 * Silently ignore errors, as the only plausible explanation is
 		 * that the pool has since been removed.
@@ -2407,13 +2545,6 @@ zfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data)
 	while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_SNAPSHOT_LIST_NEXT,
 	    &zc)) == 0) {
 
-		/*
-		 * FreeBSD compatibility with pre-v15 kernel module.
-		 * Ignore private dataset names.
-		 */
-		if (strchr(zc.zc_name, '$') != NULL)
-			continue;
-
 		if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl,
 		    &zc)) == NULL) {
 			continue;
@@ -2443,6 +2574,27 @@ zfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data)
 }
 
 /*
+ * Is one dataset name a child dataset of another?
+ *
+ * Needs to handle these cases:
+ * Dataset 1	"a/foo"		"a/foo"		"a/foo"		"a/foo"
+ * Dataset 2	"a/fo"		"a/foobar"	"a/bar/baz"	"a/foo/bar"
+ * Descendant?	No.		No.		No.		Yes.
+ */
+static boolean_t
+is_descendant(const char *ds1, const char *ds2)
+{
+	size_t d1len = strlen(ds1);
+
+	/* ds2 can't be a descendant if it's smaller */
+	if (strlen(ds2) < d1len)
+		return (B_FALSE);
+
+	/* otherwise, compare strings and verify that there's a '/' char */
+	return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0));
+}
+
+/*
  * Given a complete name, return just the portion that refers to the parent.
  * Can return NULL if this is a pool.
  */
@@ -2477,6 +2629,7 @@ check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned,
 	char *slash;
 	zfs_handle_t *zhp;
 	char errbuf[1024];
+	uint64_t is_zoned;
 
 	(void) snprintf(errbuf, sizeof (errbuf),
 	    dgettext(TEXT_DOMAIN, "cannot create '%s'"), path);
@@ -2519,9 +2672,12 @@ check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned,
 			return (zfs_standard_error(hdl, errno, errbuf));
 	}
 
-	*zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
+	is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
+	if (zoned != NULL)
+		*zoned = is_zoned;
+
 	/* we are in a non-global zone, but parent is in the global zone */
-	if (getzoneid() != GLOBAL_ZONEID && !(*zoned)) {
+	if (getzoneid() != GLOBAL_ZONEID && !is_zoned) {
 		(void) zfs_standard_error(hdl, EPERM, errbuf);
 		zfs_close(zhp);
 		return (-1);
@@ -2653,11 +2809,10 @@ int
 zfs_create_ancestors(libzfs_handle_t *hdl, const char *path)
 {
 	int prefix;
-	uint64_t zoned;
 	char *path_copy;
 	int rc;
 
-	if (check_parents(hdl, path, &zoned, B_TRUE, &prefix) != 0)
+	if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0)
 		return (-1);
 
 	if ((path_copy = strdup(path)) != NULL) {
@@ -2771,18 +2926,6 @@ zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
 	/* create the dataset */
 	ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc);
 
-	if (ret == 0 && type == ZFS_TYPE_VOLUME) {
-		ret = zvol_create_link(hdl, path);
-		if (ret) {
-			(void) zfs_standard_error(hdl, errno,
-			    dgettext(TEXT_DOMAIN,
-			    "Volume successfully created, but device links "
-			    "were not created"));
-			zcmd_free_nvlists(&zc);
-			return (-1);
-		}
-	}
-
 	zcmd_free_nvlists(&zc);
 
 	/* check for failure */
@@ -2838,30 +2981,19 @@ zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
  * isn't mounted, and that there are no active dependents.
  */
 int
-zfs_destroy(zfs_handle_t *zhp)
+zfs_destroy(zfs_handle_t *zhp, boolean_t defer)
 {
 	zfs_cmd_t zc = { 0 };
 
 	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
 
 	if (ZFS_IS_VOLUME(zhp)) {
-		/*
-		 * If user doesn't have permissions to unshare volume, then
-		 * abort the request.  This would only happen for a
-		 * non-privileged user.
-		 */
-		if (zfs_unshare_iscsi(zhp) != 0) {
-			return (-1);
-		}
-
-		if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0)
-			return (-1);
-
 		zc.zc_objset_type = DMU_OST_ZVOL;
 	} else {
 		zc.zc_objset_type = DMU_OST_ZFS;
 	}
 
+	zc.zc_defer_destroy = defer;
 	if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) {
 		return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
 		    dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
@@ -2880,13 +3012,13 @@ struct destroydata {
 };
 
 static int
-zfs_remove_link_cb(zfs_handle_t *zhp, void *arg)
+zfs_check_snap_cb(zfs_handle_t *zhp, void *arg)
 {
 	struct destroydata *dd = arg;
 	zfs_handle_t *szhp;
 	char name[ZFS_MAXNAMELEN];
 	boolean_t closezhp = dd->closezhp;
-	int rv;
+	int rv = 0;
 
 	(void) strlcpy(name, zhp->zfs_name, sizeof (name));
 	(void) strlcat(name, "@", sizeof (name));
@@ -2898,17 +3030,9 @@ zfs_remove_link_cb(zfs_handle_t *zhp, void *arg)
 		zfs_close(szhp);
 	}
 
-	if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
-		(void) zvol_remove_link(zhp->zfs_hdl, name);
-		/*
-		 * NB: this is simply a best-effort.  We don't want to
-		 * return an error, because then we wouldn't visit all
-		 * the volumes.
-		 */
-	}
-
 	dd->closezhp = B_TRUE;
-	rv = zfs_iter_filesystems(zhp, zfs_remove_link_cb, arg);
+	if (!dd->gotone)
+		rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, arg);
 	if (closezhp)
 		zfs_close(zhp);
 	return (rv);
@@ -2918,14 +3042,14 @@ zfs_remove_link_cb(zfs_handle_t *zhp, void *arg)
  * Destroys all snapshots with the given name in zhp & descendants.
  */
 int
-zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname)
+zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer)
 {
 	zfs_cmd_t zc = { 0 };
 	int ret;
 	struct destroydata dd = { 0 };
 
 	dd.snapname = snapname;
-	(void) zfs_remove_link_cb(zhp, &dd);
+	(void) zfs_check_snap_cb(zhp, &dd);
 
 	if (!dd.gotone) {
 		return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT,
@@ -2935,6 +3059,7 @@ zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname)
 
 	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
 	(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
+	zc.zc_defer_destroy = defer;
 
 	ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS, &zc);
 	if (ret != 0) {
@@ -3042,70 +3167,11 @@ zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props)
 			return (zfs_standard_error(zhp->zfs_hdl, errno,
 			    errbuf));
 		}
-	} else if (ZFS_IS_VOLUME(zhp)) {
-		ret = zvol_create_link(zhp->zfs_hdl, target);
 	}
 
 	return (ret);
 }
 
-typedef struct promote_data {
-	char cb_mountpoint[MAXPATHLEN];
-	const char *cb_target;
-	const char *cb_errbuf;
-	uint64_t cb_pivot_txg;
-} promote_data_t;
-
-static int
-promote_snap_cb(zfs_handle_t *zhp, void *data)
-{
-	promote_data_t *pd = data;
-	zfs_handle_t *szhp;
-	char snapname[MAXPATHLEN];
-	int rv = 0;
-
-	/* We don't care about snapshots after the pivot point */
-	if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > pd->cb_pivot_txg) {
-		zfs_close(zhp);
-		return (0);
-	}
-
-	/* Remove the device link if it's a zvol. */
-	if (ZFS_IS_VOLUME(zhp))
-		(void) zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name);
-
-	/* Check for conflicting names */
-	(void) strlcpy(snapname, pd->cb_target, sizeof (snapname));
-	(void) strlcat(snapname, strchr(zhp->zfs_name, '@'), sizeof (snapname));
-	szhp = make_dataset_handle(zhp->zfs_hdl, snapname);
-	if (szhp != NULL) {
-		zfs_close(szhp);
-		zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
-		    "snapshot name '%s' from origin \n"
-		    "conflicts with '%s' from target"),
-		    zhp->zfs_name, snapname);
-		rv = zfs_error(zhp->zfs_hdl, EZFS_EXISTS, pd->cb_errbuf);
-	}
-	zfs_close(zhp);
-	return (rv);
-}
-
-static int
-promote_snap_done_cb(zfs_handle_t *zhp, void *data)
-{
-	promote_data_t *pd = data;
-
-	/* We don't care about snapshots after the pivot point */
-	if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) <= pd->cb_pivot_txg) {
-		/* Create the device link if it's a zvol. */
-		if (ZFS_IS_VOLUME(zhp))
-			(void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name);
-	}
-
-	zfs_close(zhp);
-	return (0);
-}
-
 /*
  * Promotes the given clone fs to be the clone parent.
  */
@@ -3115,10 +3181,7 @@ zfs_promote(zfs_handle_t *zhp)
 	libzfs_handle_t *hdl = zhp->zfs_hdl;
 	zfs_cmd_t zc = { 0 };
 	char parent[MAXPATHLEN];
-	char *cp;
 	int ret;
-	zfs_handle_t *pzhp;
-	promote_data_t pd;
 	char errbuf[1024];
 
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
@@ -3136,29 +3199,7 @@ zfs_promote(zfs_handle_t *zhp)
 		    "not a cloned filesystem"));
 		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
 	}
-	cp = strchr(parent, '@');
-	*cp = '\0';
 
-	/* Walk the snapshots we will be moving */
-	pzhp = zfs_open(hdl, zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT);
-	if (pzhp == NULL)
-		return (-1);
-	pd.cb_pivot_txg = zfs_prop_get_int(pzhp, ZFS_PROP_CREATETXG);
-	zfs_close(pzhp);
-	pd.cb_target = zhp->zfs_name;
-	pd.cb_errbuf = errbuf;
-	pzhp = zfs_open(hdl, parent, ZFS_TYPE_DATASET);
-	if (pzhp == NULL)
-		return (-1);
-	(void) zfs_prop_get(pzhp, ZFS_PROP_MOUNTPOINT, pd.cb_mountpoint,
-	    sizeof (pd.cb_mountpoint), NULL, NULL, 0, FALSE);
-	ret = zfs_iter_snapshots(pzhp, promote_snap_cb, &pd);
-	if (ret != 0) {
-		zfs_close(pzhp);
-		return (-1);
-	}
-
-	/* issue the ioctl */
 	(void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin,
 	    sizeof (zc.zc_value));
 	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
@@ -3167,62 +3208,18 @@ zfs_promote(zfs_handle_t *zhp)
 	if (ret != 0) {
 		int save_errno = errno;
 
-		(void) zfs_iter_snapshots(pzhp, promote_snap_done_cb, &pd);
-		zfs_close(pzhp);
-
 		switch (save_errno) {
 		case EEXIST:
-			/*
-			 * There is a conflicting snapshot name.  We
-			 * should have caught this above, but they could
-			 * have renamed something in the mean time.
-			 */
+			/* There is a conflicting snapshot name. */
 			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-			    "conflicting snapshot name from parent '%s'"),
-			    parent);
+			    "conflicting snapshot '%s' from parent '%s'"),
+			    zc.zc_string, parent);
 			return (zfs_error(hdl, EZFS_EXISTS, errbuf));
 
 		default:
 			return (zfs_standard_error(hdl, save_errno, errbuf));
 		}
-	} else {
-		(void) zfs_iter_snapshots(zhp, promote_snap_done_cb, &pd);
-	}
-
-	zfs_close(pzhp);
-	return (ret);
-}
-
-struct createdata {
-	const char *cd_snapname;
-	int cd_ifexists;
-};
-
-static int
-zfs_create_link_cb(zfs_handle_t *zhp, void *arg)
-{
-	struct createdata *cd = arg;
-	int ret;
-
-	if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
-		char name[MAXPATHLEN];
-
-		(void) strlcpy(name, zhp->zfs_name, sizeof (name));
-		(void) strlcat(name, "@", sizeof (name));
-		(void) strlcat(name, cd->cd_snapname, sizeof (name));
-		(void) zvol_create_link_common(zhp->zfs_hdl, name,
-		    cd->cd_ifexists);
-		/*
-		 * NB: this is simply a best-effort.  We don't want to
-		 * return an error, because then we wouldn't visit all
-		 * the volumes.
-		 */
 	}
-
-	ret = zfs_iter_filesystems(zhp, zfs_create_link_cb, cd);
-
-	zfs_close(zhp);
-
 	return (ret);
 }
 
@@ -3286,31 +3283,11 @@ zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive,
 	 * if it was recursive, the one that actually failed will be in
 	 * zc.zc_name.
 	 */
-	if (ret != 0)
+	if (ret != 0) {
 		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 		    "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value);
-
-	if (ret == 0 && recursive) {
-		struct createdata cd;
-
-		cd.cd_snapname = delim + 1;
-		cd.cd_ifexists = B_FALSE;
-		(void) zfs_iter_filesystems(zhp, zfs_create_link_cb, &cd);
-	}
-	if (ret == 0 && zhp->zfs_type == ZFS_TYPE_VOLUME) {
-		ret = zvol_create_link(zhp->zfs_hdl, path);
-		if (ret != 0) {
-			(void) zfs_standard_error(hdl, errno,
-			    dgettext(TEXT_DOMAIN,
-			    "Volume successfully snapshotted, but device links "
-			    "were not created"));
-			zfs_close(zhp);
-			return (-1);
-		}
-	}
-
-	if (ret != 0)
 		(void) zfs_standard_error(hdl, errno, errbuf);
+	}
 
 	zfs_close(zhp);
 
@@ -3350,7 +3327,7 @@ rollback_destroy(zfs_handle_t *zhp, void *data)
 
 			logstr = zhp->zfs_hdl->libzfs_log_str;
 			zhp->zfs_hdl->libzfs_log_str = NULL;
-			cbp->cb_error |= zfs_destroy(zhp);
+			cbp->cb_error |= zfs_destroy(zhp, B_FALSE);
 			zhp->zfs_hdl->libzfs_log_str = logstr;
 		}
 	} else {
@@ -3364,7 +3341,7 @@ rollback_destroy(zfs_handle_t *zhp, void *data)
 			zfs_close(zhp);
 			return (0);
 		}
-		if (zfs_destroy(zhp) != 0)
+		if (zfs_destroy(zhp, B_FALSE) != 0)
 			cbp->cb_error = B_TRUE;
 		else
 			changelist_remove(clp, zhp->zfs_name);
@@ -3413,8 +3390,6 @@ zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force)
 	 */
 
 	if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
-		if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0)
-			return (-1);
 		if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
 			return (-1);
 		old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
@@ -3452,10 +3427,6 @@ zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force)
 	 */
 	if ((zhp->zfs_type == ZFS_TYPE_VOLUME) &&
 	    (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) {
-		if (err = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name)) {
-			zfs_close(zhp);
-			return (err);
-		}
 		if (restore_resv) {
 			new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
 			if (old_volsize != new_volsize)
@@ -3570,14 +3541,11 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive)
 
 		if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
 			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
-		uint64_t unused;
 
 		/* validate parents */
-		if (check_parents(hdl, target, &unused, B_FALSE, NULL) != 0)
+		if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0)
 			return (-1);
 
-		(void) parent_name(target, parent, sizeof (parent));
-
 		/* make sure we're in the same pool */
 		verify((delim = strchr(target, '/')) != NULL);
 		if (strncmp(zhp->zfs_name, target, delim - target) != 0 ||
@@ -3588,10 +3556,9 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive)
 		}
 
 		/* new name cannot be a child of the current dataset name */
-		if (strncmp(parent, zhp->zfs_name,
-		    strlen(zhp->zfs_name)) == 0) {
+		if (is_descendant(zhp->zfs_name, target)) {
 			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-			    "New dataset name cannot be a descendent of "
+			    "New dataset name cannot be a descendant of "
 			    "current dataset name"));
 			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
 		}
@@ -3608,7 +3575,6 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive)
 	}
 
 	if (recursive) {
-		struct destroydata dd;
 
 		parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name);
 		if (parentname == NULL) {
@@ -3623,15 +3589,6 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive)
 			goto error;
 		}
 
-		dd.snapname = delim + 1;
-		dd.gotone = B_FALSE;
-		dd.closezhp = B_TRUE;
-
-		/* We remove any zvol links prior to renaming them */
-		ret = zfs_iter_filesystems(zhrp, zfs_remove_link_cb, &dd);
-		if (ret) {
-			goto error;
-		}
 	} else {
 		if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0)) == NULL)
 			return (-1);
@@ -3679,27 +3636,10 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive)
 		 * On failure, we still want to remount any filesystems that
 		 * were previously mounted, so we don't alter the system state.
 		 */
-		if (recursive) {
-			struct createdata cd;
-
-			/* only create links for datasets that had existed */
-			cd.cd_snapname = delim + 1;
-			cd.cd_ifexists = B_TRUE;
-			(void) zfs_iter_filesystems(zhrp, zfs_create_link_cb,
-			    &cd);
-		} else {
+		if (!recursive)
 			(void) changelist_postfix(cl);
-		}
 	} else {
-		if (recursive) {
-			struct createdata cd;
-
-			/* only create links for datasets that had existed */
-			cd.cd_snapname = strchr(target, '@') + 1;
-			cd.cd_ifexists = B_TRUE;
-			ret = zfs_iter_filesystems(zhrp, zfs_create_link_cb,
-			    &cd);
-		} else {
+		if (!recursive) {
 			changelist_rename(cl, zfs_get_name(zhp), target);
 			ret = changelist_postfix(cl);
 		}
@@ -3718,147 +3658,19 @@ error:
 	return (ret);
 }
 
-/*
- * Given a zvol dataset, issue the ioctl to create the appropriate minor node,
- * poke devfsadm to create the /dev link, and then wait for the link to appear.
- */
-int
-zvol_create_link(libzfs_handle_t *hdl, const char *dataset)
-{
-	return (zvol_create_link_common(hdl, dataset, B_FALSE));
-}
-
-static int
-zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists)
-{
-	zfs_cmd_t zc = { 0 };
-#if 0
-	di_devlink_handle_t dhdl;
-	priv_set_t *priv_effective;
-	int privileged;
-#endif
-
-	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
-
-	/*
-	 * Issue the appropriate ioctl.
-	 */
-	if (ioctl(hdl->libzfs_fd, ZFS_IOC_CREATE_MINOR, &zc) != 0) {
-		switch (errno) {
-		case EEXIST:
-			/*
-			 * Silently ignore the case where the link already
-			 * exists.  This allows 'zfs volinit' to be run multiple
-			 * times without errors.
-			 */
-			return (0);
-
-		case ENOENT:
-			/*
-			 * Dataset does not exist in the kernel.  If we
-			 * don't care (see zfs_rename), then ignore the
-			 * error quietly.
-			 */
-			if (ifexists) {
-				return (0);
-			}
-
-			/* FALLTHROUGH */
-
-		default:
-			return (zfs_standard_error_fmt(hdl, errno,
-			    dgettext(TEXT_DOMAIN, "cannot create device links "
-			    "for '%s'"), dataset));
-		}
-	}
-
-#if 0
-	/*
-	 * If privileged call devfsadm and wait for the links to
-	 * magically appear.
-	 * Otherwise, print out an informational message.
-	 */
-
-	priv_effective = priv_allocset();
-	(void) getppriv(PRIV_EFFECTIVE, priv_effective);
-	privileged = (priv_isfullset(priv_effective) == B_TRUE);
-	priv_freeset(priv_effective);
-
-	if (privileged) {
-		if ((dhdl = di_devlink_init(ZFS_DRIVER,
-		    DI_MAKE_LINK)) == NULL) {
-			zfs_error_aux(hdl, strerror(errno));
-			(void) zfs_error_fmt(hdl, errno,
-			    dgettext(TEXT_DOMAIN, "cannot create device links "
-			    "for '%s'"), dataset);
-			(void) ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc);
-			return (-1);
-		} else {
-			(void) di_devlink_fini(&dhdl);
-		}
-	} else {
-		char pathname[MAXPATHLEN];
-		struct stat64 statbuf;
-		int i;
-
-#define	MAX_WAIT	10
-
-		/*
-		 * This is the poor mans way of waiting for the link
-		 * to show up.  If after 10 seconds we still don't
-		 * have it, then print out a message.
-		 */
-		(void) snprintf(pathname, sizeof (pathname), "/dev/zvol/dsk/%s",
-		    dataset);
-
-		for (i = 0; i != MAX_WAIT; i++) {
-			if (stat64(pathname, &statbuf) == 0)
-				break;
-			(void) sleep(1);
-		}
-		if (i == MAX_WAIT)
-			(void) printf(gettext("%s may not be immediately "
-			    "available\n"), pathname);
-	}
-#endif
-
-	return (0);
-}
-
-/*
- * Remove a minor node for the given zvol and the associated /dev links.
- */
-int
-zvol_remove_link(libzfs_handle_t *hdl, const char *dataset)
+nvlist_t *
+zfs_get_user_props(zfs_handle_t *zhp)
 {
-	zfs_cmd_t zc = { 0 };
-
-	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
-
-	if (ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc) != 0) {
-		switch (errno) {
-		case ENXIO:
-			/*
-			 * Silently ignore the case where the link no longer
-			 * exists, so that 'zfs volfini' can be run multiple
-			 * times without errors.
-			 */
-			return (0);
-
-		default:
-			return (zfs_standard_error_fmt(hdl, errno,
-			    dgettext(TEXT_DOMAIN, "cannot remove device "
-			    "links for '%s'"), dataset));
-		}
-	}
-
-	return (0);
+	return (zhp->zfs_user_props);
 }
 
 nvlist_t *
-zfs_get_user_props(zfs_handle_t *zhp)
+zfs_get_recvd_props(zfs_handle_t *zhp)
 {
-	return (zhp->zfs_user_props);
+	if (zhp->zfs_recvd_props == NULL)
+		if (get_recvd_props_ioctl(zhp) != 0)
+			return (NULL);
+	return (zhp->zfs_recvd_props);
 }
 
 /*
@@ -3870,10 +3682,12 @@ zfs_get_user_props(zfs_handle_t *zhp)
  *        for new unique user properties and add them to the list.
  *
  *      - For non fixed-width properties, keep track of the maximum width seen
- *        so that we can size the column appropriately.
+ *        so that we can size the column appropriately. If the user has
+ *        requested received property values, we also need to compute the width
+ *        of the RECEIVED column.
  */
 int
-zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp)
+zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received)
 {
 	libzfs_handle_t *hdl = zhp->zfs_hdl;
 	zprop_list_t *entry;
@@ -3944,66 +3758,30 @@ zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp)
 				if (strlen(buf) > entry->pl_width)
 					entry->pl_width = strlen(buf);
 			}
-		} else if (nvlist_lookup_nvlist(userprops,
-		    entry->pl_user_prop, &propval)  == 0) {
-			verify(nvlist_lookup_string(propval,
-			    ZPROP_VALUE, &strval) == 0);
-			if (strlen(strval) > entry->pl_width)
-				entry->pl_width = strlen(strval);
+			if (received && zfs_prop_get_recvd(zhp,
+			    zfs_prop_to_name(entry->pl_prop),
+			    buf, sizeof (buf), B_FALSE) == 0)
+				if (strlen(buf) > entry->pl_recvd_width)
+					entry->pl_recvd_width = strlen(buf);
+		} else {
+			if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop,
+			    &propval) == 0) {
+				verify(nvlist_lookup_string(propval,
+				    ZPROP_VALUE, &strval) == 0);
+				if (strlen(strval) > entry->pl_width)
+					entry->pl_width = strlen(strval);
+			}
+			if (received && zfs_prop_get_recvd(zhp,
+			    entry->pl_user_prop,
+			    buf, sizeof (buf), B_FALSE) == 0)
+				if (strlen(buf) > entry->pl_recvd_width)
+					entry->pl_recvd_width = strlen(buf);
 		}
 	}
 
 	return (0);
 }
 
-#ifdef TODO
-int
-zfs_iscsi_perm_check(libzfs_handle_t *hdl, char *dataset, ucred_t *cred)
-{
-	zfs_cmd_t zc = { 0 };
-	nvlist_t *nvp;
-	gid_t gid;
-	uid_t uid;
-	const gid_t *groups;
-	int group_cnt;
-	int error;
-
-	if (nvlist_alloc(&nvp, NV_UNIQUE_NAME, 0) != 0)
-		return (no_memory(hdl));
-
-	uid = ucred_geteuid(cred);
-	gid = ucred_getegid(cred);
-	group_cnt = ucred_getgroups(cred, &groups);
-
-	if (uid == (uid_t)-1 || gid == (uid_t)-1 || group_cnt == (uid_t)-1)
-		return (1);
-
-	if (nvlist_add_uint32(nvp, ZFS_DELEG_PERM_UID, uid) != 0) {
-		nvlist_free(nvp);
-		return (1);
-	}
-
-	if (nvlist_add_uint32(nvp, ZFS_DELEG_PERM_GID, gid) != 0) {
-		nvlist_free(nvp);
-		return (1);
-	}
-
-	if (nvlist_add_uint32_array(nvp,
-	    ZFS_DELEG_PERM_GROUPS, (uint32_t *)groups, group_cnt) != 0) {
-		nvlist_free(nvp);
-		return (1);
-	}
-	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
-
-	if (zcmd_write_src_nvlist(hdl, &zc, nvp))
-		return (-1);
-
-	error = ioctl(hdl->libzfs_fd, ZFS_IOC_ISCSI_PERM_CHECK, &zc);
-	nvlist_free(nvp);
-	return (error);
-}
-#endif
-
 int
 zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path,
     char *resource, void *export, void *sharetab,
@@ -4042,9 +3820,11 @@ zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props)
 		nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr);
 
 		/*
-		 * We leave user:props in the nvlist, so there will be
-		 * some ZPROP_INVAL.  To be extra safe, don't prune
-		 * those.
+		 * User properties will result in ZPROP_INVAL, and since we
+		 * only know how to prune standard ZFS properties, we always
+		 * leave these in the list.  This can also happen if we
+		 * encounter an unknown DSL property (when running older
+		 * software, for example).
 		 */
 		if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE)
 			(void) nvlist_remove(zhp->zfs_props,
@@ -4173,6 +3953,331 @@ zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type,
 	return (error);
 }
 
+int
+zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag,
+    boolean_t recursive, boolean_t temphold, boolean_t enoent_ok,
+    int cleanup_fd, uint64_t dsobj, uint64_t createtxg)
+{
+	zfs_cmd_t zc = { 0 };
+	libzfs_handle_t *hdl = zhp->zfs_hdl;
+
+	ASSERT(!recursive || dsobj == 0);
+
+	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
+	(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
+	if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string))
+	    >= sizeof (zc.zc_string))
+		return (zfs_error(hdl, EZFS_TAGTOOLONG, tag));
+	zc.zc_cookie = recursive;
+	zc.zc_temphold = temphold;
+	zc.zc_cleanup_fd = cleanup_fd;
+	zc.zc_sendobj = dsobj;
+	zc.zc_createtxg = createtxg;
+
+	if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) {
+		char errbuf[ZFS_MAXNAMELEN+32];
+
+		/*
+		 * if it was recursive, the one that actually failed will be in
+		 * zc.zc_name.
+		 */
+		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
+		    "cannot hold '%s@%s'"), zc.zc_name, snapname);
+		switch (errno) {
+		case E2BIG:
+			/*
+			 * Temporary tags wind up having the ds object id
+			 * prepended. So even if we passed the length check
+			 * above, it's still possible for the tag to wind
+			 * up being slightly too long.
+			 */
+			return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf));
+		case ENOTSUP:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "pool must be upgraded"));
+			return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
+		case EINVAL:
+			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
+		case EEXIST:
+			return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf));
+		case ENOENT:
+			if (enoent_ok)
+				return (ENOENT);
+			/* FALLTHROUGH */
+		default:
+			return (zfs_standard_error_fmt(hdl, errno, errbuf));
+		}
+	}
+
+	return (0);
+}
+
+int
+zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag,
+    boolean_t recursive)
+{
+	zfs_cmd_t zc = { 0 };
+	libzfs_handle_t *hdl = zhp->zfs_hdl;
+
+	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
+	(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
+	if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string))
+	    >= sizeof (zc.zc_string))
+		return (zfs_error(hdl, EZFS_TAGTOOLONG, tag));
+	zc.zc_cookie = recursive;
+
+	if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) {
+		char errbuf[ZFS_MAXNAMELEN+32];
+
+		/*
+		 * if it was recursive, the one that actually failed will be in
+		 * zc.zc_name.
+		 */
+		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
+		    "cannot release '%s' from '%s@%s'"), tag, zc.zc_name,
+		    snapname);
+		switch (errno) {
+		case ESRCH:
+			return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf));
+		case ENOTSUP:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "pool must be upgraded"));
+			return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
+		case EINVAL:
+			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
+		default:
+			return (zfs_standard_error_fmt(hdl, errno, errbuf));
+		}
+	}
+
+	return (0);
+}
+
+int
+zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl)
+{
+	zfs_cmd_t zc = { 0 };
+	libzfs_handle_t *hdl = zhp->zfs_hdl;
+	int nvsz = 2048;
+	void *nvbuf;
+	int err = 0;
+	char errbuf[ZFS_MAXNAMELEN+32];
+
+	assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
+	    zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
+
+tryagain:
+
+	nvbuf = malloc(nvsz);
+	if (nvbuf == NULL) {
+		err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
+		goto out;
+	}
+
+	zc.zc_nvlist_dst_size = nvsz;
+	zc.zc_nvlist_dst = (uintptr_t)nvbuf;
+
+	(void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN);
+
+	if (zfs_ioctl(hdl, ZFS_IOC_GET_FSACL, &zc) != 0) {
+		(void) snprintf(errbuf, sizeof (errbuf),
+		    dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"),
+		    zc.zc_name);
+		switch (errno) {
+		case ENOMEM:
+			free(nvbuf);
+			nvsz = zc.zc_nvlist_dst_size;
+			goto tryagain;
+
+		case ENOTSUP:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "pool must be upgraded"));
+			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
+			break;
+		case EINVAL:
+			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
+			break;
+		case ENOENT:
+			err = zfs_error(hdl, EZFS_NOENT, errbuf);
+			break;
+		default:
+			err = zfs_standard_error_fmt(hdl, errno, errbuf);
+			break;
+		}
+	} else {
+		/* success */
+		int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
+		if (rc) {
+			(void) snprintf(errbuf, sizeof (errbuf), dgettext(
+			    TEXT_DOMAIN, "cannot get permissions on '%s'"),
+			    zc.zc_name);
+			err = zfs_standard_error_fmt(hdl, rc, errbuf);
+		}
+	}
+
+	free(nvbuf);
+out:
+	return (err);
+}
+
+int
+zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl)
+{
+	zfs_cmd_t zc = { 0 };
+	libzfs_handle_t *hdl = zhp->zfs_hdl;
+	char *nvbuf;
+	char errbuf[ZFS_MAXNAMELEN+32];
+	size_t nvsz;
+	int err;
+
+	assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
+	    zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
+
+	err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE);
+	assert(err == 0);
+
+	nvbuf = malloc(nvsz);
+
+	err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0);
+	assert(err == 0);
+
+	zc.zc_nvlist_src_size = nvsz;
+	zc.zc_nvlist_src = (uintptr_t)nvbuf;
+	zc.zc_perm_action = un;
+
+	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
+
+	if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) {
+		(void) snprintf(errbuf, sizeof (errbuf),
+		    dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"),
+		    zc.zc_name);
+		switch (errno) {
+		case ENOTSUP:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "pool must be upgraded"));
+			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
+			break;
+		case EINVAL:
+			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
+			break;
+		case ENOENT:
+			err = zfs_error(hdl, EZFS_NOENT, errbuf);
+			break;
+		default:
+			err = zfs_standard_error_fmt(hdl, errno, errbuf);
+			break;
+		}
+	}
+
+	free(nvbuf);
+
+	return (err);
+}
+
+int
+zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl)
+{
+	zfs_cmd_t zc = { 0 };
+	libzfs_handle_t *hdl = zhp->zfs_hdl;
+	int nvsz = 2048;
+	void *nvbuf;
+	int err = 0;
+	char errbuf[ZFS_MAXNAMELEN+32];
+
+	assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
+
+tryagain:
+
+	nvbuf = malloc(nvsz);
+	if (nvbuf == NULL) {
+		err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
+		goto out;
+	}
+
+	zc.zc_nvlist_dst_size = nvsz;
+	zc.zc_nvlist_dst = (uintptr_t)nvbuf;
+
+	(void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN);
+
+	if (zfs_ioctl(hdl, ZFS_IOC_GET_HOLDS, &zc) != 0) {
+		(void) snprintf(errbuf, sizeof (errbuf),
+		    dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
+		    zc.zc_name);
+		switch (errno) {
+		case ENOMEM:
+			free(nvbuf);
+			nvsz = zc.zc_nvlist_dst_size;
+			goto tryagain;
+
+		case ENOTSUP:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "pool must be upgraded"));
+			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
+			break;
+		case EINVAL:
+			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
+			break;
+		case ENOENT:
+			err = zfs_error(hdl, EZFS_NOENT, errbuf);
+			break;
+		default:
+			err = zfs_standard_error_fmt(hdl, errno, errbuf);
+			break;
+		}
+	} else {
+		/* success */
+		int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
+		if (rc) {
+			(void) snprintf(errbuf, sizeof (errbuf),
+			    dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
+			    zc.zc_name);
+			err = zfs_standard_error_fmt(hdl, rc, errbuf);
+		}
+	}
+
+	free(nvbuf);
+out:
+	return (err);
+}
+
+uint64_t
+zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props)
+{
+	uint64_t numdb;
+	uint64_t nblocks, volblocksize;
+	int ncopies;
+	char *strval;
+
+	if (nvlist_lookup_string(props,
+	    zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0)
+		ncopies = atoi(strval);
+	else
+		ncopies = 1;
+	if (nvlist_lookup_uint64(props,
+	    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
+	    &volblocksize) != 0)
+		volblocksize = ZVOL_DEFAULT_BLOCKSIZE;
+	nblocks = volsize/volblocksize;
+	/* start with metadnode L0-L6 */
+	numdb = 7;
+	/* calculate number of indirects */
+	while (nblocks > 1) {
+		nblocks += DNODES_PER_LEVEL - 1;
+		nblocks /= DNODES_PER_LEVEL;
+		numdb += nblocks;
+	}
+	numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1);
+	volsize *= ncopies;
+	/*
+	 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
+	 * compressed, but in practice they compress down to about
+	 * 1100 bytes
+	 */
+	numdb *= 1ULL << DN_MAX_INDBLKSHIFT;
+	volsize += numdb;
+	return (volsize);
+}
+
 /*
  * Attach/detach the given filesystem to/from the given jail.
  */
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_diff.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_diff.c
new file mode 100644
index 0000000..ae84285
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_diff.c
@@ -0,0 +1,832 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+/*
+ * zfs diff support
+ */
+#include <ctype.h>
+#include <errno.h>
+#include <libintl.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <sys/zfs_ioctl.h>
+#include <libzfs.h>
+#include "libzfs_impl.h"
+
+#define	ZDIFF_SNAPDIR		"/.zfs/snapshot/"
+#define	ZDIFF_SHARESDIR 	"/.zfs/shares/"
+#define	ZDIFF_PREFIX		"zfs-diff-%d"
+
+#define	ZDIFF_ADDED	'+'
+#define	ZDIFF_MODIFIED	'M'
+#define	ZDIFF_REMOVED	'-'
+#define	ZDIFF_RENAMED	'R'
+
+static boolean_t
+do_name_cmp(const char *fpath, const char *tpath)
+{
+	char *fname, *tname;
+	fname = strrchr(fpath, '/') + 1;
+	tname = strrchr(tpath, '/') + 1;
+	return (strcmp(fname, tname) == 0);
+}
+
+typedef struct differ_info {
+	zfs_handle_t *zhp;
+	char *fromsnap;
+	char *frommnt;
+	char *tosnap;
+	char *tomnt;
+	char *ds;
+	char *dsmnt;
+	char *tmpsnap;
+	char errbuf[1024];
+	boolean_t isclone;
+	boolean_t scripted;
+	boolean_t classify;
+	boolean_t timestamped;
+	uint64_t shares;
+	int zerr;
+	int cleanupfd;
+	int outputfd;
+	int datafd;
+} differ_info_t;
+
+/*
+ * Given a {dsname, object id}, get the object path
+ */
+static int
+get_stats_for_obj(differ_info_t *di, const char *dsname, uint64_t obj,
+    char *pn, int maxlen, zfs_stat_t *sb)
+{
+	zfs_cmd_t zc = { 0 };
+	int error;
+
+	(void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name));
+	zc.zc_obj = obj;
+
+	errno = 0;
+	error = ioctl(di->zhp->zfs_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_STATS, &zc);
+	di->zerr = errno;
+
+	/* we can get stats even if we failed to get a path */
+	(void) memcpy(sb, &zc.zc_stat, sizeof (zfs_stat_t));
+	if (error == 0) {
+		ASSERT(di->zerr == 0);
+		(void) strlcpy(pn, zc.zc_value, maxlen);
+		return (0);
+	}
+
+	if (di->zerr == EPERM) {
+		(void) snprintf(di->errbuf, sizeof (di->errbuf),
+		    dgettext(TEXT_DOMAIN,
+		    "The sys_config privilege or diff delegated permission "
+		    "is needed\nto discover path names"));
+		return (-1);
+	} else {
+		(void) snprintf(di->errbuf, sizeof (di->errbuf),
+		    dgettext(TEXT_DOMAIN,
+		    "Unable to determine path or stats for "
+		    "object %lld in %s"), obj, dsname);
+		return (-1);
+	}
+}
+
+/*
+ * stream_bytes
+ *
+ * Prints a file name out a character at a time.  If the character is
+ * not in the range of what we consider "printable" ASCII, display it
+ * as an escaped 3-digit octal value.  ASCII values less than a space
+ * are all control characters and we declare the upper end as the
+ * DELete character.  This also is the last 7-bit ASCII character.
+ * We choose to treat all 8-bit ASCII as not printable for this
+ * application.
+ */
+static void
+stream_bytes(FILE *fp, const char *string)
+{
+	while (*string) {
+		if (*string > ' ' && *string != '\\' && *string < '\177')
+			(void) fprintf(fp, "%c", *string++);
+		else
+			(void) fprintf(fp, "\\%03o", *string++);
+	}
+}
+
+static void
+print_what(FILE *fp, mode_t what)
+{
+	char symbol;
+
+	switch (what & S_IFMT) {
+	case S_IFBLK:
+		symbol = 'B';
+		break;
+	case S_IFCHR:
+		symbol = 'C';
+		break;
+	case S_IFDIR:
+		symbol = '/';
+		break;
+#ifdef S_IFDOOR
+	case S_IFDOOR:
+		symbol = '>';
+		break;
+#endif
+	case S_IFIFO:
+		symbol = '|';
+		break;
+	case S_IFLNK:
+		symbol = '@';
+		break;
+#ifdef S_IFPORT
+	case S_IFPORT:
+		symbol = 'P';
+		break;
+#endif
+	case S_IFSOCK:
+		symbol = '=';
+		break;
+	case S_IFREG:
+		symbol = 'F';
+		break;
+	default:
+		symbol = '?';
+		break;
+	}
+	(void) fprintf(fp, "%c", symbol);
+}
+
+static void
+print_cmn(FILE *fp, differ_info_t *di, const char *file)
+{
+	stream_bytes(fp, di->dsmnt);
+	stream_bytes(fp, file);
+}
+
+static void
+print_rename(FILE *fp, differ_info_t *di, const char *old, const char *new,
+    zfs_stat_t *isb)
+{
+	if (di->timestamped)
+		(void) fprintf(fp, "%10lld.%09lld\t",
+		    (longlong_t)isb->zs_ctime[0],
+		    (longlong_t)isb->zs_ctime[1]);
+	(void) fprintf(fp, "%c\t", ZDIFF_RENAMED);
+	if (di->classify) {
+		print_what(fp, isb->zs_mode);
+		(void) fprintf(fp, "\t");
+	}
+	print_cmn(fp, di, old);
+	if (di->scripted)
+		(void) fprintf(fp, "\t");
+	else
+		(void) fprintf(fp, " -> ");
+	print_cmn(fp, di, new);
+	(void) fprintf(fp, "\n");
+}
+
+static void
+print_link_change(FILE *fp, differ_info_t *di, int delta, const char *file,
+    zfs_stat_t *isb)
+{
+	if (di->timestamped)
+		(void) fprintf(fp, "%10lld.%09lld\t",
+		    (longlong_t)isb->zs_ctime[0],
+		    (longlong_t)isb->zs_ctime[1]);
+	(void) fprintf(fp, "%c\t", ZDIFF_MODIFIED);
+	if (di->classify) {
+		print_what(fp, isb->zs_mode);
+		(void) fprintf(fp, "\t");
+	}
+	print_cmn(fp, di, file);
+	(void) fprintf(fp, "\t(%+d)", delta);
+	(void) fprintf(fp, "\n");
+}
+
+static void
+print_file(FILE *fp, differ_info_t *di, char type, const char *file,
+    zfs_stat_t *isb)
+{
+	if (di->timestamped)
+		(void) fprintf(fp, "%10lld.%09lld\t",
+		    (longlong_t)isb->zs_ctime[0],
+		    (longlong_t)isb->zs_ctime[1]);
+	(void) fprintf(fp, "%c\t", type);
+	if (di->classify) {
+		print_what(fp, isb->zs_mode);
+		(void) fprintf(fp, "\t");
+	}
+	print_cmn(fp, di, file);
+	(void) fprintf(fp, "\n");
+}
+
+static int
+write_inuse_diffs_one(FILE *fp, differ_info_t *di, uint64_t dobj)
+{
+	struct zfs_stat fsb, tsb;
+	boolean_t same_name;
+	mode_t fmode, tmode;
+	char fobjname[MAXPATHLEN], tobjname[MAXPATHLEN];
+	int fobjerr, tobjerr;
+	int change;
+
+	if (dobj == di->shares)
+		return (0);
+
+	/*
+	 * Check the from and to snapshots for info on the object. If
+	 * we get ENOENT, then the object just didn't exist in that
+	 * snapshot.  If we get ENOTSUP, then we tried to get
+	 * info on a non-ZPL object, which we don't care about anyway.
+	 */
+	fobjerr = get_stats_for_obj(di, di->fromsnap, dobj, fobjname,
+	    MAXPATHLEN, &fsb);
+	if (fobjerr && di->zerr != ENOENT && di->zerr != ENOTSUP)
+		return (-1);
+
+	tobjerr = get_stats_for_obj(di, di->tosnap, dobj, tobjname,
+	    MAXPATHLEN, &tsb);
+	if (tobjerr && di->zerr != ENOENT && di->zerr != ENOTSUP)
+		return (-1);
+
+	/*
+	 * Unallocated object sharing the same meta dnode block
+	 */
+	if (fobjerr && tobjerr) {
+		ASSERT(di->zerr == ENOENT || di->zerr == ENOTSUP);
+		di->zerr = 0;
+		return (0);
+	}
+
+	di->zerr = 0; /* negate get_stats_for_obj() from side that failed */
+	fmode = fsb.zs_mode & S_IFMT;
+	tmode = tsb.zs_mode & S_IFMT;
+	if (fmode == S_IFDIR || tmode == S_IFDIR || fsb.zs_links == 0 ||
+	    tsb.zs_links == 0)
+		change = 0;
+	else
+		change = tsb.zs_links - fsb.zs_links;
+
+	if (fobjerr) {
+		if (change) {
+			print_link_change(fp, di, change, tobjname, &tsb);
+			return (0);
+		}
+		print_file(fp, di, ZDIFF_ADDED, tobjname, &tsb);
+		return (0);
+	} else if (tobjerr) {
+		if (change) {
+			print_link_change(fp, di, change, fobjname, &fsb);
+			return (0);
+		}
+		print_file(fp, di, ZDIFF_REMOVED, fobjname, &fsb);
+		return (0);
+	}
+
+	if (fmode != tmode && fsb.zs_gen == tsb.zs_gen)
+		tsb.zs_gen++;	/* Force a generational difference */
+	same_name = do_name_cmp(fobjname, tobjname);
+
+	/* Simple modification or no change */
+	if (fsb.zs_gen == tsb.zs_gen) {
+		/* No apparent changes.  Could we assert !this?  */
+		if (fsb.zs_ctime[0] == tsb.zs_ctime[0] &&
+		    fsb.zs_ctime[1] == tsb.zs_ctime[1])
+			return (0);
+		if (change) {
+			print_link_change(fp, di, change,
+			    change > 0 ? fobjname : tobjname, &tsb);
+		} else if (same_name) {
+			print_file(fp, di, ZDIFF_MODIFIED, fobjname, &tsb);
+		} else {
+			print_rename(fp, di, fobjname, tobjname, &tsb);
+		}
+		return (0);
+	} else {
+		/* file re-created or object re-used */
+		print_file(fp, di, ZDIFF_REMOVED, fobjname, &fsb);
+		print_file(fp, di, ZDIFF_ADDED, tobjname, &tsb);
+		return (0);
+	}
+}
+
+static int
+write_inuse_diffs(FILE *fp, differ_info_t *di, dmu_diff_record_t *dr)
+{
+	uint64_t o;
+	int err;
+
+	for (o = dr->ddr_first; o <= dr->ddr_last; o++) {
+		if (err = write_inuse_diffs_one(fp, di, o))
+			return (err);
+	}
+	return (0);
+}
+
+static int
+describe_free(FILE *fp, differ_info_t *di, uint64_t object, char *namebuf,
+    int maxlen)
+{
+	struct zfs_stat sb;
+
+	if (get_stats_for_obj(di, di->fromsnap, object, namebuf,
+	    maxlen, &sb) != 0) {
+		/* Let it slide, if in the delete queue on from side */
+		if (di->zerr == ENOENT && sb.zs_links == 0) {
+			di->zerr = 0;
+			return (0);
+		}
+		return (-1);
+	}
+
+	print_file(fp, di, ZDIFF_REMOVED, namebuf, &sb);
+	return (0);
+}
+
+static int
+write_free_diffs(FILE *fp, differ_info_t *di, dmu_diff_record_t *dr)
+{
+	zfs_cmd_t zc = { 0 };
+	libzfs_handle_t *lhdl = di->zhp->zfs_hdl;
+	char fobjname[MAXPATHLEN];
+
+	(void) strlcpy(zc.zc_name, di->fromsnap, sizeof (zc.zc_name));
+	zc.zc_obj = dr->ddr_first - 1;
+
+	ASSERT(di->zerr == 0);
+
+	while (zc.zc_obj < dr->ddr_last) {
+		int err;
+
+		err = ioctl(lhdl->libzfs_fd, ZFS_IOC_NEXT_OBJ, &zc);
+		if (err == 0) {
+			if (zc.zc_obj == di->shares) {
+				zc.zc_obj++;
+				continue;
+			}
+			if (zc.zc_obj > dr->ddr_last) {
+				break;
+			}
+			err = describe_free(fp, di, zc.zc_obj, fobjname,
+			    MAXPATHLEN);
+			if (err)
+				break;
+		} else if (errno == ESRCH) {
+			break;
+		} else {
+			(void) snprintf(di->errbuf, sizeof (di->errbuf),
+			    dgettext(TEXT_DOMAIN,
+			    "next allocated object (> %lld) find failure"),
+			    zc.zc_obj);
+			di->zerr = errno;
+			break;
+		}
+	}
+	if (di->zerr)
+		return (-1);
+	return (0);
+}
+
+static void *
+differ(void *arg)
+{
+	differ_info_t *di = arg;
+	dmu_diff_record_t dr;
+	FILE *ofp;
+	int err = 0;
+
+	if ((ofp = fdopen(di->outputfd, "w")) == NULL) {
+		di->zerr = errno;
+		(void) strerror_r(errno, di->errbuf, sizeof (di->errbuf));
+		(void) close(di->datafd);
+		return ((void *)-1);
+	}
+
+	for (;;) {
+		char *cp = (char *)&dr;
+		int len = sizeof (dr);
+		int rv;
+
+		do {
+			rv = read(di->datafd, cp, len);
+			cp += rv;
+			len -= rv;
+		} while (len > 0 && rv > 0);
+
+		if (rv < 0 || (rv == 0 && len != sizeof (dr))) {
+			di->zerr = EPIPE;
+			break;
+		} else if (rv == 0) {
+			/* end of file at a natural breaking point */
+			break;
+		}
+
+		switch (dr.ddr_type) {
+		case DDR_FREE:
+			err = write_free_diffs(ofp, di, &dr);
+			break;
+		case DDR_INUSE:
+			err = write_inuse_diffs(ofp, di, &dr);
+			break;
+		default:
+			di->zerr = EPIPE;
+			break;
+		}
+
+		if (err || di->zerr)
+			break;
+	}
+
+	(void) fclose(ofp);
+	(void) close(di->datafd);
+	if (err)
+		return ((void *)-1);
+	if (di->zerr) {
+		ASSERT(di->zerr == EINVAL);
+		(void) snprintf(di->errbuf, sizeof (di->errbuf),
+		    dgettext(TEXT_DOMAIN,
+		    "Internal error: bad data from diff IOCTL"));
+		return ((void *)-1);
+	}
+	return ((void *)0);
+}
+
+static int
+find_shares_object(differ_info_t *di)
+{
+	char fullpath[MAXPATHLEN];
+	struct stat64 sb = { 0 };
+
+	(void) strlcpy(fullpath, di->dsmnt, MAXPATHLEN);
+	(void) strlcat(fullpath, ZDIFF_SHARESDIR, MAXPATHLEN);
+
+	if (stat64(fullpath, &sb) != 0) {
+#ifdef sun
+		(void) snprintf(di->errbuf, sizeof (di->errbuf),
+		    dgettext(TEXT_DOMAIN, "Cannot stat %s"), fullpath);
+		return (zfs_error(di->zhp->zfs_hdl, EZFS_DIFF, di->errbuf));
+#else
+		return (0);
+#endif
+	}
+
+	di->shares = (uint64_t)sb.st_ino;
+	return (0);
+}
+
+static int
+make_temp_snapshot(differ_info_t *di)
+{
+	libzfs_handle_t *hdl = di->zhp->zfs_hdl;
+	zfs_cmd_t zc = { 0 };
+
+	(void) snprintf(zc.zc_value, sizeof (zc.zc_value),
+	    ZDIFF_PREFIX, getpid());
+	(void) strlcpy(zc.zc_name, di->ds, sizeof (zc.zc_name));
+	zc.zc_cleanup_fd = di->cleanupfd;
+
+	if (ioctl(hdl->libzfs_fd, ZFS_IOC_TMP_SNAPSHOT, &zc) != 0) {
+		int err = errno;
+		if (err == EPERM) {
+			(void) snprintf(di->errbuf, sizeof (di->errbuf),
+			    dgettext(TEXT_DOMAIN, "The diff delegated "
+			    "permission is needed in order\nto create a "
+			    "just-in-time snapshot for diffing\n"));
+			return (zfs_error(hdl, EZFS_DIFF, di->errbuf));
+		} else {
+			(void) snprintf(di->errbuf, sizeof (di->errbuf),
+			    dgettext(TEXT_DOMAIN, "Cannot create just-in-time "
+			    "snapshot of '%s'"), zc.zc_name);
+			return (zfs_standard_error(hdl, err, di->errbuf));
+		}
+	}
+
+	di->tmpsnap = zfs_strdup(hdl, zc.zc_value);
+	di->tosnap = zfs_asprintf(hdl, "%s@%s", di->ds, di->tmpsnap);
+	return (0);
+}
+
+static void
+teardown_differ_info(differ_info_t *di)
+{
+	free(di->ds);
+	free(di->dsmnt);
+	free(di->fromsnap);
+	free(di->frommnt);
+	free(di->tosnap);
+	free(di->tmpsnap);
+	free(di->tomnt);
+	(void) close(di->cleanupfd);
+}
+
+static int
+get_snapshot_names(differ_info_t *di, const char *fromsnap,
+    const char *tosnap)
+{
+	libzfs_handle_t *hdl = di->zhp->zfs_hdl;
+	char *atptrf = NULL;
+	char *atptrt = NULL;
+	int fdslen, fsnlen;
+	int tdslen, tsnlen;
+
+	/*
+	 * Can accept
+	 *    dataset@snap1
+	 *    dataset@snap1 dataset@snap2
+	 *    dataset@snap1 @snap2
+	 *    dataset@snap1 dataset
+	 *    @snap1 dataset@snap2
+	 */
+	if (tosnap == NULL) {
+		/* only a from snapshot given, must be valid */
+		(void) snprintf(di->errbuf, sizeof (di->errbuf),
+		    dgettext(TEXT_DOMAIN,
+		    "Badly formed snapshot name %s"), fromsnap);
+
+		if (!zfs_validate_name(hdl, fromsnap, ZFS_TYPE_SNAPSHOT,
+		    B_FALSE)) {
+			return (zfs_error(hdl, EZFS_INVALIDNAME,
+			    di->errbuf));
+		}
+
+		atptrf = strchr(fromsnap, '@');
+		ASSERT(atptrf != NULL);
+		fdslen = atptrf - fromsnap;
+
+		di->fromsnap = zfs_strdup(hdl, fromsnap);
+		di->ds = zfs_strdup(hdl, fromsnap);
+		di->ds[fdslen] = '\0';
+
+		/* the to snap will be a just-in-time snap of the head */
+		return (make_temp_snapshot(di));
+	}
+
+	(void) snprintf(di->errbuf, sizeof (di->errbuf),
+	    dgettext(TEXT_DOMAIN,
+	    "Unable to determine which snapshots to compare"));
+
+	atptrf = strchr(fromsnap, '@');
+	atptrt = strchr(tosnap, '@');
+	fdslen = atptrf ? atptrf - fromsnap : strlen(fromsnap);
+	tdslen = atptrt ? atptrt - tosnap : strlen(tosnap);
+	fsnlen = strlen(fromsnap) - fdslen;	/* includes @ sign */
+	tsnlen = strlen(tosnap) - tdslen;	/* includes @ sign */
+
+	if (fsnlen <= 1 || tsnlen == 1 || (fdslen == 0 && tdslen == 0) ||
+	    (fsnlen == 0 && tsnlen == 0)) {
+		return (zfs_error(hdl, EZFS_INVALIDNAME, di->errbuf));
+	} else if ((fdslen > 0 && tdslen > 0) &&
+	    ((tdslen != fdslen || strncmp(fromsnap, tosnap, fdslen) != 0))) {
+		/*
+		 * not the same dataset name, might be okay if
+		 * tosnap is a clone of a fromsnap descendant.
+		 */
+		char origin[ZFS_MAXNAMELEN];
+		zprop_source_t src;
+		zfs_handle_t *zhp;
+
+		di->ds = zfs_alloc(di->zhp->zfs_hdl, tdslen + 1);
+		(void) strncpy(di->ds, tosnap, tdslen);
+		di->ds[tdslen] = '\0';
+
+		zhp = zfs_open(hdl, di->ds, ZFS_TYPE_FILESYSTEM);
+		while (zhp != NULL) {
+			(void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
+			    origin, sizeof (origin), &src, NULL, 0, B_FALSE);
+
+			if (strncmp(origin, fromsnap, fsnlen) == 0)
+				break;
+
+			(void) zfs_close(zhp);
+			zhp = zfs_open(hdl, origin, ZFS_TYPE_FILESYSTEM);
+		}
+
+		if (zhp == NULL) {
+			(void) snprintf(di->errbuf, sizeof (di->errbuf),
+			    dgettext(TEXT_DOMAIN,
+			    "Not an earlier snapshot from the same fs"));
+			return (zfs_error(hdl, EZFS_INVALIDNAME, di->errbuf));
+		} else {
+			(void) zfs_close(zhp);
+		}
+
+		di->isclone = B_TRUE;
+		di->fromsnap = zfs_strdup(hdl, fromsnap);
+		if (tsnlen) {
+			di->tosnap = zfs_strdup(hdl, tosnap);
+		} else {
+			return (make_temp_snapshot(di));
+		}
+	} else {
+		int dslen = fdslen ? fdslen : tdslen;
+
+		di->ds = zfs_alloc(hdl, dslen + 1);
+		(void) strncpy(di->ds, fdslen ? fromsnap : tosnap, dslen);
+		di->ds[dslen] = '\0';
+
+		di->fromsnap = zfs_asprintf(hdl, "%s%s", di->ds, atptrf);
+		if (tsnlen) {
+			di->tosnap = zfs_asprintf(hdl, "%s%s", di->ds, atptrt);
+		} else {
+			return (make_temp_snapshot(di));
+		}
+	}
+	return (0);
+}
+
+static int
+get_mountpoint(differ_info_t *di, char *dsnm, char **mntpt)
+{
+	boolean_t mounted;
+
+	mounted = is_mounted(di->zhp->zfs_hdl, dsnm, mntpt);
+	if (mounted == B_FALSE) {
+		(void) snprintf(di->errbuf, sizeof (di->errbuf),
+		    dgettext(TEXT_DOMAIN,
+		    "Cannot diff an unmounted snapshot"));
+		return (zfs_error(di->zhp->zfs_hdl, EZFS_BADTYPE, di->errbuf));
+	}
+
+	/* Avoid a double slash at the beginning of root-mounted datasets */
+	if (**mntpt == '/' && *(*mntpt + 1) == '\0')
+		**mntpt = '\0';
+	return (0);
+}
+
+static int
+get_mountpoints(differ_info_t *di)
+{
+	char *strptr;
+	char *frommntpt;
+
+	/*
+	 * first get the mountpoint for the parent dataset
+	 */
+	if (get_mountpoint(di, di->ds, &di->dsmnt) != 0)
+		return (-1);
+
+	strptr = strchr(di->tosnap, '@');
+	ASSERT3P(strptr, !=, NULL);
+	di->tomnt = zfs_asprintf(di->zhp->zfs_hdl, "%s%s%s", di->dsmnt,
+	    ZDIFF_SNAPDIR, ++strptr);
+
+	strptr = strchr(di->fromsnap, '@');
+	ASSERT3P(strptr, !=, NULL);
+
+	frommntpt = di->dsmnt;
+	if (di->isclone) {
+		char *mntpt;
+		int err;
+
+		*strptr = '\0';
+		err = get_mountpoint(di, di->fromsnap, &mntpt);
+		*strptr = '@';
+		if (err != 0)
+			return (-1);
+		frommntpt = mntpt;
+	}
+
+	di->frommnt = zfs_asprintf(di->zhp->zfs_hdl, "%s%s%s", frommntpt,
+	    ZDIFF_SNAPDIR, ++strptr);
+
+	if (di->isclone)
+		free(frommntpt);
+
+	return (0);
+}
+
+static int
+setup_differ_info(zfs_handle_t *zhp, const char *fromsnap,
+    const char *tosnap, differ_info_t *di)
+{
+	di->zhp = zhp;
+
+	di->cleanupfd = open(ZFS_DEV, O_RDWR|O_EXCL);
+	VERIFY(di->cleanupfd >= 0);
+
+	if (get_snapshot_names(di, fromsnap, tosnap) != 0)
+		return (-1);
+
+	if (get_mountpoints(di) != 0)
+		return (-1);
+
+	if (find_shares_object(di) != 0)
+		return (-1);
+
+	return (0);
+}
+
+int
+zfs_show_diffs(zfs_handle_t *zhp, int outfd, const char *fromsnap,
+    const char *tosnap, int flags)
+{
+	zfs_cmd_t zc = { 0 };
+	char errbuf[1024];
+	differ_info_t di = { 0 };
+	pthread_t tid;
+	int pipefd[2];
+	int iocerr;
+
+	(void) snprintf(errbuf, sizeof (errbuf),
+	    dgettext(TEXT_DOMAIN, "zfs diff failed"));
+
+	if (setup_differ_info(zhp, fromsnap, tosnap, &di)) {
+		teardown_differ_info(&di);
+		return (-1);
+	}
+
+	if (pipe(pipefd)) {
+		zfs_error_aux(zhp->zfs_hdl, strerror(errno));
+		teardown_differ_info(&di);
+		return (zfs_error(zhp->zfs_hdl, EZFS_PIPEFAILED, errbuf));
+	}
+
+	di.scripted = (flags & ZFS_DIFF_PARSEABLE);
+	di.classify = (flags & ZFS_DIFF_CLASSIFY);
+	di.timestamped = (flags & ZFS_DIFF_TIMESTAMP);
+
+	di.outputfd = outfd;
+	di.datafd = pipefd[0];
+
+	if (pthread_create(&tid, NULL, differ, &di)) {
+		zfs_error_aux(zhp->zfs_hdl, strerror(errno));
+		(void) close(pipefd[0]);
+		(void) close(pipefd[1]);
+		teardown_differ_info(&di);
+		return (zfs_error(zhp->zfs_hdl,
+		    EZFS_THREADCREATEFAILED, errbuf));
+	}
+
+	/* do the ioctl() */
+	(void) strlcpy(zc.zc_value, di.fromsnap, strlen(di.fromsnap) + 1);
+	(void) strlcpy(zc.zc_name, di.tosnap, strlen(di.tosnap) + 1);
+	zc.zc_cookie = pipefd[1];
+
+	iocerr = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_DIFF, &zc);
+	if (iocerr != 0) {
+		(void) snprintf(errbuf, sizeof (errbuf),
+		    dgettext(TEXT_DOMAIN, "Unable to obtain diffs"));
+		if (errno == EPERM) {
+			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
+			    "\n   The sys_mount privilege or diff delegated "
+			    "permission is needed\n   to execute the "
+			    "diff ioctl"));
+		} else if (errno == EXDEV) {
+			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
+			    "\n   Not an earlier snapshot from the same fs"));
+		} else if (errno != EPIPE || di.zerr == 0) {
+			zfs_error_aux(zhp->zfs_hdl, strerror(errno));
+		}
+		(void) close(pipefd[1]);
+		(void) pthread_cancel(tid);
+		(void) pthread_join(tid, NULL);
+		teardown_differ_info(&di);
+		if (di.zerr != 0 && di.zerr != EPIPE) {
+			zfs_error_aux(zhp->zfs_hdl, strerror(di.zerr));
+			return (zfs_error(zhp->zfs_hdl, EZFS_DIFF, di.errbuf));
+		} else {
+			return (zfs_error(zhp->zfs_hdl, EZFS_DIFFDATA, errbuf));
+		}
+	}
+
+	(void) close(pipefd[1]);
+	(void) pthread_join(tid, NULL);
+
+	if (di.zerr != 0) {
+		zfs_error_aux(zhp->zfs_hdl, strerror(di.zerr));
+		return (zfs_error(zhp->zfs_hdl, EZFS_DIFF, di.errbuf));
+	}
+	teardown_differ_info(&di);
+	return (0);
+}
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_fru.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_fru.c
new file mode 100644
index 0000000..788fa2c
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_fru.c
@@ -0,0 +1,452 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <libintl.h>
+#include <link.h>
+#include <pthread.h>
+#include <strings.h>
+#include <unistd.h>
+
+#include <libzfs.h>
+
+#include <fm/libtopo.h>
+#include <sys/fm/protocol.h>
+#include <sys/systeminfo.h>
+
+#include "libzfs_impl.h"
+
+/*
+ * This file is responsible for determining the relationship between I/O
+ * devices paths and physical locations.  In the world of MPxIO and external
+ * enclosures, the device path is not synonymous with the physical location.
+ * If you remove a drive and insert it into a different slot, it will end up
+ * with the same path under MPxIO.  If you recable storage enclosures, the
+ * device paths may change.  All of this makes it difficult to implement the
+ * 'autoreplace' property, which is supposed to automatically manage disk
+ * replacement based on physical slot.
+ *
+ * In order to work around these limitations, we have a per-vdev FRU property
+ * that is the libtopo path (minus disk-specific authority information) to the
+ * physical location of the device on the system.  This is an optional
+ * property, and is only needed when using the 'autoreplace' property or when
+ * generating FMA faults against vdevs.
+ */
+
+/*
+ * Because the FMA packages depend on ZFS, we have to dlopen() libtopo in case
+ * it is not present.  We only need this once per library instance, so it is
+ * not part of the libzfs handle.
+ */
+static void *_topo_dlhandle;
+static topo_hdl_t *(*_topo_open)(int, const char *, int *);
+static void (*_topo_close)(topo_hdl_t *);
+static char *(*_topo_snap_hold)(topo_hdl_t *, const char *, int *);
+static void (*_topo_snap_release)(topo_hdl_t *);
+static topo_walk_t *(*_topo_walk_init)(topo_hdl_t *, const char *,
+    topo_walk_cb_t, void *, int *);
+static int (*_topo_walk_step)(topo_walk_t *, int);
+static void (*_topo_walk_fini)(topo_walk_t *);
+static void (*_topo_hdl_strfree)(topo_hdl_t *, char *);
+static char *(*_topo_node_name)(tnode_t *);
+static int (*_topo_prop_get_string)(tnode_t *, const char *, const char *,
+    char **, int *);
+static int (*_topo_node_fru)(tnode_t *, nvlist_t **, nvlist_t *, int *);
+static int (*_topo_fmri_nvl2str)(topo_hdl_t *, nvlist_t *, char **, int *);
+static int (*_topo_fmri_strcmp_noauth)(topo_hdl_t *, const char *,
+    const char *);
+
+#define	ZFS_FRU_HASH_SIZE	257
+
+static size_t
+fru_strhash(const char *key)
+{
+	ulong_t g, h = 0;
+	const char *p;
+
+	for (p = key; *p != '\0'; p++) {
+		h = (h << 4) + *p;
+
+		if ((g = (h & 0xf0000000)) != 0) {
+			h ^= (g >> 24);
+			h ^= g;
+		}
+	}
+
+	return (h % ZFS_FRU_HASH_SIZE);
+}
+
+static int
+libzfs_fru_gather(topo_hdl_t *thp, tnode_t *tn, void *arg)
+{
+	libzfs_handle_t *hdl = arg;
+	nvlist_t *fru;
+	char *devpath, *frustr;
+	int err;
+	libzfs_fru_t *frup;
+	size_t idx;
+
+	/*
+	 * If this is the chassis node, and we don't yet have the system
+	 * chassis ID, then fill in this value now.
+	 */
+	if (hdl->libzfs_chassis_id[0] == '\0' &&
+	    strcmp(_topo_node_name(tn), "chassis") == 0) {
+		if (_topo_prop_get_string(tn, FM_FMRI_AUTHORITY,
+		    FM_FMRI_AUTH_CHASSIS, &devpath, &err) == 0)
+			(void) strlcpy(hdl->libzfs_chassis_id, devpath,
+			    sizeof (hdl->libzfs_chassis_id));
+	}
+
+	/*
+	 * Skip non-disk nodes.
+	 */
+	if (strcmp(_topo_node_name(tn), "disk") != 0)
+		return (TOPO_WALK_NEXT);
+
+	/*
+	 * Get the devfs path and FRU.
+	 */
+	if (_topo_prop_get_string(tn, "io", "devfs-path", &devpath, &err) != 0)
+		return (TOPO_WALK_NEXT);
+
+	if (libzfs_fru_lookup(hdl, devpath) != NULL) {
+		_topo_hdl_strfree(thp, devpath);
+		return (TOPO_WALK_NEXT);
+	}
+
+	if (_topo_node_fru(tn, &fru, NULL, &err) != 0) {
+		_topo_hdl_strfree(thp, devpath);
+		return (TOPO_WALK_NEXT);
+	}
+
+	/*
+	 * Convert the FRU into a string.
+	 */
+	if (_topo_fmri_nvl2str(thp, fru, &frustr, &err) != 0) {
+		nvlist_free(fru);
+		_topo_hdl_strfree(thp, devpath);
+		return (TOPO_WALK_NEXT);
+	}
+
+	nvlist_free(fru);
+
+	/*
+	 * Finally, we have a FRU string and device path.  Add it to the hash.
+	 */
+	if ((frup = calloc(sizeof (libzfs_fru_t), 1)) == NULL) {
+		_topo_hdl_strfree(thp, devpath);
+		_topo_hdl_strfree(thp, frustr);
+		return (TOPO_WALK_NEXT);
+	}
+
+	if ((frup->zf_device = strdup(devpath)) == NULL ||
+	    (frup->zf_fru = strdup(frustr)) == NULL) {
+		free(frup->zf_device);
+		free(frup);
+		_topo_hdl_strfree(thp, devpath);
+		_topo_hdl_strfree(thp, frustr);
+		return (TOPO_WALK_NEXT);
+	}
+
+	_topo_hdl_strfree(thp, devpath);
+	_topo_hdl_strfree(thp, frustr);
+
+	idx = fru_strhash(frup->zf_device);
+	frup->zf_chain = hdl->libzfs_fru_hash[idx];
+	hdl->libzfs_fru_hash[idx] = frup;
+	frup->zf_next = hdl->libzfs_fru_list;
+	hdl->libzfs_fru_list = frup;
+
+	return (TOPO_WALK_NEXT);
+}
+
+/*
+ * Called during initialization to setup the dynamic libtopo connection.
+ */
+#pragma init(libzfs_init_fru)
+static void
+libzfs_init_fru(void)
+{
+	char path[MAXPATHLEN];
+	char isa[257];
+
+#if defined(_LP64)
+	if (sysinfo(SI_ARCHITECTURE_64, isa, sizeof (isa)) < 0)
+		isa[0] = '\0';
+#else
+	isa[0] = '\0';
+#endif
+	(void) snprintf(path, sizeof (path),
+	    "/usr/lib/fm/%s/libtopo.so", isa);
+
+	if ((_topo_dlhandle = dlopen(path, RTLD_LAZY)) == NULL)
+		return;
+
+	_topo_open = (topo_hdl_t *(*)())
+	    dlsym(_topo_dlhandle, "topo_open");
+	_topo_close = (void (*)())
+	    dlsym(_topo_dlhandle, "topo_close");
+	_topo_snap_hold = (char *(*)())
+	    dlsym(_topo_dlhandle, "topo_snap_hold");
+	_topo_snap_release = (void (*)())
+	    dlsym(_topo_dlhandle, "topo_snap_release");
+	_topo_walk_init = (topo_walk_t *(*)())
+	    dlsym(_topo_dlhandle, "topo_walk_init");
+	_topo_walk_step = (int (*)())
+	    dlsym(_topo_dlhandle, "topo_walk_step");
+	_topo_walk_fini = (void (*)())
+	    dlsym(_topo_dlhandle, "topo_walk_fini");
+	_topo_hdl_strfree = (void (*)())
+	    dlsym(_topo_dlhandle, "topo_hdl_strfree");
+	_topo_node_name = (char *(*)())
+	    dlsym(_topo_dlhandle, "topo_node_name");
+	_topo_prop_get_string = (int (*)())
+	    dlsym(_topo_dlhandle, "topo_prop_get_string");
+	_topo_node_fru = (int (*)())
+	    dlsym(_topo_dlhandle, "topo_node_fru");
+	_topo_fmri_nvl2str = (int (*)())
+	    dlsym(_topo_dlhandle, "topo_fmri_nvl2str");
+	_topo_fmri_strcmp_noauth = (int (*)())
+	    dlsym(_topo_dlhandle, "topo_fmri_strcmp_noauth");
+
+	if (_topo_open == NULL || _topo_close == NULL ||
+	    _topo_snap_hold == NULL || _topo_snap_release == NULL ||
+	    _topo_walk_init == NULL || _topo_walk_step == NULL ||
+	    _topo_walk_fini == NULL || _topo_hdl_strfree == NULL ||
+	    _topo_node_name == NULL || _topo_prop_get_string == NULL ||
+	    _topo_node_fru == NULL || _topo_fmri_nvl2str == NULL ||
+	    _topo_fmri_strcmp_noauth == NULL) {
+		(void) dlclose(_topo_dlhandle);
+		_topo_dlhandle = NULL;
+	}
+}
+
+/*
+ * Refresh the mappings from device path -> FMRI.  We do this by walking the
+ * hc topology looking for disk nodes, and recording the io/devfs-path and FRU.
+ * Note that we strip out the disk-specific authority information (serial,
+ * part, revision, etc) so that we are left with only the identifying
+ * characteristics of the slot (hc path and chassis-id).
+ */
+void
+libzfs_fru_refresh(libzfs_handle_t *hdl)
+{
+	int err;
+	char *uuid;
+	topo_hdl_t *thp;
+	topo_walk_t *twp;
+
+	if (_topo_dlhandle == NULL)
+		return;
+
+	/*
+	 * Clear the FRU hash and initialize our basic structures.
+	 */
+	libzfs_fru_clear(hdl, B_FALSE);
+
+	if ((hdl->libzfs_topo_hdl = _topo_open(TOPO_VERSION,
+	    NULL, &err)) == NULL)
+		return;
+
+	thp = hdl->libzfs_topo_hdl;
+
+	if ((uuid = _topo_snap_hold(thp, NULL, &err)) == NULL)
+		return;
+
+	_topo_hdl_strfree(thp, uuid);
+
+	if (hdl->libzfs_fru_hash == NULL &&
+	    (hdl->libzfs_fru_hash =
+	    calloc(ZFS_FRU_HASH_SIZE * sizeof (void *), 1)) == NULL)
+		return;
+
+	/*
+	 * We now have a topo snapshot, so iterate over the hc topology looking
+	 * for disks to add to the hash.
+	 */
+	twp = _topo_walk_init(thp, FM_FMRI_SCHEME_HC,
+	    libzfs_fru_gather, hdl, &err);
+	if (twp != NULL) {
+		(void) _topo_walk_step(twp, TOPO_WALK_CHILD);
+		_topo_walk_fini(twp);
+	}
+}
+
+/*
+ * Given a devfs path, return the FRU for the device, if known.  This will
+ * automatically call libzfs_fru_refresh() if it hasn't already been called by
+ * the consumer.  The string returned is valid until the next call to
+ * libzfs_fru_refresh().
+ */
+const char *
+libzfs_fru_lookup(libzfs_handle_t *hdl, const char *devpath)
+{
+	size_t idx = fru_strhash(devpath);
+	libzfs_fru_t *frup;
+
+	if (hdl->libzfs_fru_hash == NULL)
+		libzfs_fru_refresh(hdl);
+
+	if (hdl->libzfs_fru_hash == NULL)
+		return (NULL);
+
+	for (frup = hdl->libzfs_fru_hash[idx]; frup != NULL;
+	    frup = frup->zf_chain) {
+		if (strcmp(devpath, frup->zf_device) == 0)
+			return (frup->zf_fru);
+	}
+
+	return (NULL);
+}
+
+/*
+ * Given a fru path, return the device path.  This will automatically call
+ * libzfs_fru_refresh() if it hasn't already been called by the consumer.  The
+ * string returned is valid until the next call to libzfs_fru_refresh().
+ */
+const char *
+libzfs_fru_devpath(libzfs_handle_t *hdl, const char *fru)
+{
+	libzfs_fru_t *frup;
+	size_t idx;
+
+	if (hdl->libzfs_fru_hash == NULL)
+		libzfs_fru_refresh(hdl);
+
+	if (hdl->libzfs_fru_hash == NULL)
+		return (NULL);
+
+	for (idx = 0; idx < ZFS_FRU_HASH_SIZE; idx++) {
+		for (frup = hdl->libzfs_fru_hash[idx]; frup != NULL;
+		    frup = frup->zf_next) {
+			if (_topo_fmri_strcmp_noauth(hdl->libzfs_topo_hdl,
+			    fru, frup->zf_fru))
+				return (frup->zf_device);
+		}
+	}
+
+	return (NULL);
+}
+
+/*
+ * Change the stored FRU for the given vdev.
+ */
+int
+zpool_fru_set(zpool_handle_t *zhp, uint64_t vdev_guid, const char *fru)
+{
+	zfs_cmd_t zc = { 0 };
+
+	(void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
+	(void) strncpy(zc.zc_value, fru, sizeof (zc.zc_value));
+	zc.zc_guid = vdev_guid;
+
+	if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_SETFRU, &zc) != 0)
+		return (zpool_standard_error_fmt(zhp->zpool_hdl, errno,
+		    dgettext(TEXT_DOMAIN, "cannot set FRU")));
+
+	return (0);
+}
+
+/*
+ * Compare to two FRUs, ignoring any authority information.
+ */
+boolean_t
+libzfs_fru_compare(libzfs_handle_t *hdl, const char *a, const char *b)
+{
+	if (hdl->libzfs_fru_hash == NULL)
+		libzfs_fru_refresh(hdl);
+
+	if (hdl->libzfs_fru_hash == NULL)
+		return (strcmp(a, b) == 0);
+
+	return (_topo_fmri_strcmp_noauth(hdl->libzfs_topo_hdl, a, b));
+}
+
+/*
+ * This special function checks to see whether the FRU indicates it's supposed
+ * to be in the system chassis, but the chassis-id doesn't match.  This can
+ * happen in a clustered case, where both head nodes have the same logical
+ * disk, but opening the device on the other head node is meaningless.
+ */
+boolean_t
+libzfs_fru_notself(libzfs_handle_t *hdl, const char *fru)
+{
+	const char *chassisid;
+	size_t len;
+
+	if (hdl->libzfs_fru_hash == NULL)
+		libzfs_fru_refresh(hdl);
+
+	if (hdl->libzfs_chassis_id[0] == '\0')
+		return (B_FALSE);
+
+	if (strstr(fru, "/chassis=0/") == NULL)
+		return (B_FALSE);
+
+	if ((chassisid = strstr(fru, ":chassis-id=")) == NULL)
+		return (B_FALSE);
+
+	chassisid += 12;
+	len = strlen(hdl->libzfs_chassis_id);
+	if (strncmp(chassisid, hdl->libzfs_chassis_id, len) == 0 &&
+	    (chassisid[len] == '/' || chassisid[len] == ':'))
+		return (B_FALSE);
+
+	return (B_TRUE);
+}
+
+/*
+ * Clear memory associated with the FRU hash.
+ */
+void
+libzfs_fru_clear(libzfs_handle_t *hdl, boolean_t final)
+{
+	libzfs_fru_t *frup;
+
+	while ((frup = hdl->libzfs_fru_list) != NULL) {
+		hdl->libzfs_fru_list = frup->zf_next;
+		free(frup->zf_device);
+		free(frup->zf_fru);
+		free(frup);
+	}
+
+	hdl->libzfs_fru_list = NULL;
+
+	if (hdl->libzfs_topo_hdl != NULL) {
+		_topo_snap_release(hdl->libzfs_topo_hdl);
+		_topo_close(hdl->libzfs_topo_hdl);
+		hdl->libzfs_topo_hdl = NULL;
+	}
+
+	if (final) {
+		free(hdl->libzfs_fru_hash);
+	} else if (hdl->libzfs_fru_hash != NULL) {
+		bzero(hdl->libzfs_fru_hash,
+		    ZFS_FRU_HASH_SIZE * sizeof (void *));
+	}
+}
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h
index 0642033..9d1ecb7 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_impl.h
@@ -20,8 +20,7 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #ifndef	_LIBFS_IMPL_H
@@ -30,7 +29,6 @@
 #include <sys/dmu.h>
 #include <sys/fs/zfs.h>
 #include <sys/zfs_ioctl.h>
-#include <sys/zfs_acl.h>
 #include <sys/spa.h>
 #include <sys/nvpair.h>
 
@@ -38,6 +36,8 @@
 #include <libuutil.h>
 #include <libzfs.h>
 
+#include "zfs_ioctl_compat.h"
+
 #ifdef	__cplusplus
 extern "C" {
 #endif
@@ -47,6 +47,13 @@ extern "C" {
 #endif
 #define	VERIFY	verify
 
+typedef struct libzfs_fru {
+	char *zf_device;
+	char *zf_fru;
+	struct libzfs_fru *zf_chain;
+	struct libzfs_fru *zf_next;
+} libzfs_fru_t;
+
 struct libzfs_handle {
 	int libzfs_error;
 	int libzfs_fd;
@@ -61,11 +68,17 @@ struct libzfs_handle {
 	char libzfs_desc[1024];
 	char *libzfs_log_str;
 	int libzfs_printerr;
+	int libzfs_storeerr; /* stuff error messages into buffer */
 	void *libzfs_sharehdl; /* libshare handle */
 	uint_t libzfs_shareflags;
 	boolean_t libzfs_mnttab_enable;
 	avl_tree_t libzfs_mnttab_cache;
+	int libzfs_pool_iter;
+	libzfs_fru_t **libzfs_fru_hash;
+	libzfs_fru_t *libzfs_fru_list;
+	char libzfs_chassis_id[256];
 };
+
 #define	ZFSSHARE_MISS	0x01	/* Didn't find entry in cache */
 
 struct zfs_handle {
@@ -77,6 +90,7 @@ struct zfs_handle {
 	dmu_objset_stats_t zfs_dmustats;
 	nvlist_t *zfs_props;
 	nvlist_t *zfs_user_props;
+	nvlist_t *zfs_recvd_props;
 	boolean_t zfs_mntcheck;
 	char *zfs_mntopts;
 	uint8_t *zfs_props_table;
@@ -112,7 +126,6 @@ typedef  enum {
  */
 typedef enum {
 	SHARED_NOT_SHARED = 0x0,
-	SHARED_ISCSI = 0x1,
 	SHARED_NFS = 0x2,
 	SHARED_SMB = 0x4
 } zfs_share_type_t;
@@ -122,6 +135,7 @@ int zfs_error_fmt(libzfs_handle_t *, int, const char *, ...);
 void zfs_error_aux(libzfs_handle_t *, const char *, ...);
 void *zfs_alloc(libzfs_handle_t *, size_t);
 void *zfs_realloc(libzfs_handle_t *, void *, size_t, size_t);
+char *zfs_asprintf(libzfs_handle_t *, const char *, ...);
 char *zfs_strdup(libzfs_handle_t *, const char *);
 int no_memory(libzfs_handle_t *);
 
@@ -172,11 +186,11 @@ zfs_handle_t *make_dataset_handle(libzfs_handle_t *, const char *);
 
 int zpool_open_silent(libzfs_handle_t *, const char *, zpool_handle_t **);
 
-int zvol_create_link(libzfs_handle_t *, const char *);
-int zvol_remove_link(libzfs_handle_t *, const char *);
-int zpool_iter_zvol(zpool_handle_t *, int (*)(const char *, void *), void *);
 boolean_t zpool_name_valid(libzfs_handle_t *, boolean_t, const char *);
 
+int zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
+    boolean_t modifying);
+
 void namespace_clear(libzfs_handle_t *);
 
 /*
@@ -190,7 +204,10 @@ extern int zfs_parse_options(char *, zfs_share_proto_t);
 extern int zfs_unshare_proto(zfs_handle_t *,
     const char *, zfs_share_proto_t *);
 
-#ifdef	__FreeBSD__
+extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
+
+#ifndef sun
+static int zfs_kernel_version = 0;
 
 /*
  * This is FreeBSD version of ioctl, because Solaris' ioctl() updates
@@ -200,11 +217,23 @@ extern int zfs_unshare_proto(zfs_handle_t *,
 static __inline int
 zcmd_ioctl(int fd, unsigned long cmd, zfs_cmd_t *zc)
 {
-	size_t oldsize;
-	int ret;
+	size_t oldsize, zfs_kernel_version_size;
+	int version, ret, cflag = ZFS_CMD_COMPAT_NONE;
+
+	zfs_kernel_version_size = sizeof(zfs_kernel_version);
+	if (zfs_kernel_version == 0) {
+		sysctlbyname("vfs.zfs.version.spa", &zfs_kernel_version,
+		    &zfs_kernel_version_size, NULL, 0);
+	}
+
+	if (zfs_kernel_version == SPA_VERSION_15 ||
+	    zfs_kernel_version == SPA_VERSION_14 ||
+	    zfs_kernel_version == SPA_VERSION_13)
+		cflag = ZFS_CMD_COMPAT_V15;
 
 	oldsize = zc->zc_nvlist_dst_size;
-	ret = ioctl(fd, cmd, zc);
+	ret = zcmd_ioctl_compat(fd, cmd, zc, cflag);
+
 	if (ret == 0 && oldsize < zc->zc_nvlist_dst_size) {
 		ret = -1;
 		errno = ENOMEM;
@@ -213,7 +242,7 @@ zcmd_ioctl(int fd, unsigned long cmd, zfs_cmd_t *zc)
 	return (ret);
 }
 #define	ioctl(fd, cmd, zc)	zcmd_ioctl((fd), (cmd), (zc))
-#endif
+#endif	/* !sun */
 
 #ifdef	__cplusplus
 }
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c
index 166c831..4c31e56 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c
@@ -19,12 +19,9 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 /*
  * Pool import support functions.
  *
@@ -41,15 +38,18 @@
  * using our derived config, and record the results.
  */
 
+#include <ctype.h>
 #include <devid.h>
 #include <dirent.h>
 #include <errno.h>
 #include <libintl.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <thread_pool.h>
 #include <libgeom.h>
 
 #include <sys/vdev_impl.h>
@@ -113,6 +113,7 @@ get_devid(const char *path)
 	return (ret);
 }
 
+
 /*
  * Go through and fix up any path and/or devid information for the given vdev
  * configuration.
@@ -388,8 +389,6 @@ refresh_config(libzfs_handle_t *hdl, nvlist_t *config)
 	}
 
 	if (err) {
-		(void) zpool_standard_error(hdl, errno,
-		    dgettext(TEXT_DOMAIN, "cannot discover pools"));
 		zcmd_free_nvlists(&zc);
 		return (NULL);
 	}
@@ -404,6 +403,21 @@ refresh_config(libzfs_handle_t *hdl, nvlist_t *config)
 }
 
 /*
+ * Determine if the vdev id is a hole in the namespace.
+ */
+boolean_t
+vdev_is_hole(uint64_t *hole_array, uint_t holes, uint_t id)
+{
+	for (int c = 0; c < holes; c++) {
+
+		/* Top-level is a hole */
+		if (hole_array[c] == id)
+			return (B_TRUE);
+	}
+	return (B_FALSE);
+}
+
+/*
  * Convert our list of pools into the definitive set of configurations.  We
  * start by picking the best config for each toplevel vdev.  Once that's done,
  * we assemble the toplevel vdevs into a full config for the pool.  We make a
@@ -425,17 +439,20 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
 	uint64_t version, guid;
 	uint_t children = 0;
 	nvlist_t **child = NULL;
+	uint_t holes;
+	uint64_t *hole_array, max_id;
 	uint_t c;
 	boolean_t isactive;
 	uint64_t hostid;
 	nvlist_t *nvl;
 	boolean_t found_one = B_FALSE;
+	boolean_t valid_top_config = B_FALSE;
 
 	if (nvlist_alloc(&ret, 0, 0) != 0)
 		goto nomem;
 
 	for (pe = pl->pools; pe != NULL; pe = pe->pe_next) {
-		uint64_t id;
+		uint64_t id, max_txg = 0;
 
 		if (nvlist_alloc(&config, NV_UNIQUE_NAME, 0) != 0)
 			goto nomem;
@@ -463,6 +480,42 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
 				}
 			}
 
+			/*
+			 * We rely on the fact that the max txg for the
+			 * pool will contain the most up-to-date information
+			 * about the valid top-levels in the vdev namespace.
+			 */
+			if (best_txg > max_txg) {
+				(void) nvlist_remove(config,
+				    ZPOOL_CONFIG_VDEV_CHILDREN,
+				    DATA_TYPE_UINT64);
+				(void) nvlist_remove(config,
+				    ZPOOL_CONFIG_HOLE_ARRAY,
+				    DATA_TYPE_UINT64_ARRAY);
+
+				max_txg = best_txg;
+				hole_array = NULL;
+				holes = 0;
+				max_id = 0;
+				valid_top_config = B_FALSE;
+
+				if (nvlist_lookup_uint64(tmp,
+				    ZPOOL_CONFIG_VDEV_CHILDREN, &max_id) == 0) {
+					verify(nvlist_add_uint64(config,
+					    ZPOOL_CONFIG_VDEV_CHILDREN,
+					    max_id) == 0);
+					valid_top_config = B_TRUE;
+				}
+
+				if (nvlist_lookup_uint64_array(tmp,
+				    ZPOOL_CONFIG_HOLE_ARRAY, &hole_array,
+				    &holes) == 0) {
+					verify(nvlist_add_uint64_array(config,
+					    ZPOOL_CONFIG_HOLE_ARRAY,
+					    hole_array, holes) == 0);
+				}
+			}
+
 			if (!config_seen) {
 				/*
 				 * Copy the relevant pieces of data to the pool
@@ -522,6 +575,7 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
 			    ZPOOL_CONFIG_VDEV_TREE, &nvtop) == 0);
 			verify(nvlist_lookup_uint64(nvtop, ZPOOL_CONFIG_ID,
 			    &id) == 0);
+
 			if (id >= children) {
 				nvlist_t **newchild;
 
@@ -542,17 +596,82 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
 
 		}
 
+		/*
+		 * If we have information about all the top-levels then
+		 * clean up the nvlist which we've constructed. This
+		 * means removing any extraneous devices that are
+		 * beyond the valid range or adding devices to the end
+		 * of our array which appear to be missing.
+		 */
+		if (valid_top_config) {
+			if (max_id < children) {
+				for (c = max_id; c < children; c++)
+					nvlist_free(child[c]);
+				children = max_id;
+			} else if (max_id > children) {
+				nvlist_t **newchild;
+
+				newchild = zfs_alloc(hdl, (max_id) *
+				    sizeof (nvlist_t *));
+				if (newchild == NULL)
+					goto nomem;
+
+				for (c = 0; c < children; c++)
+					newchild[c] = child[c];
+
+				free(child);
+				child = newchild;
+				children = max_id;
+			}
+		}
+
 		verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
 		    &guid) == 0);
 
 		/*
+		 * The vdev namespace may contain holes as a result of
+		 * device removal. We must add them back into the vdev
+		 * tree before we process any missing devices.
+		 */
+		if (holes > 0) {
+			ASSERT(valid_top_config);
+
+			for (c = 0; c < children; c++) {
+				nvlist_t *holey;
+
+				if (child[c] != NULL ||
+				    !vdev_is_hole(hole_array, holes, c))
+					continue;
+
+				if (nvlist_alloc(&holey, NV_UNIQUE_NAME,
+				    0) != 0)
+					goto nomem;
+
+				/*
+				 * Holes in the namespace are treated as
+				 * "hole" top-level vdevs and have a
+				 * special flag set on them.
+				 */
+				if (nvlist_add_string(holey,
+				    ZPOOL_CONFIG_TYPE,
+				    VDEV_TYPE_HOLE) != 0 ||
+				    nvlist_add_uint64(holey,
+				    ZPOOL_CONFIG_ID, c) != 0 ||
+				    nvlist_add_uint64(holey,
+				    ZPOOL_CONFIG_GUID, 0ULL) != 0)
+					goto nomem;
+				child[c] = holey;
+			}
+		}
+
+		/*
 		 * Look for any missing top-level vdevs.  If this is the case,
 		 * create a faked up 'missing' vdev as a placeholder.  We cannot
 		 * simply compress the child array, because the kernel performs
 		 * certain checks to make sure the vdev IDs match their location
 		 * in the configuration.
 		 */
-		for (c = 0; c < children; c++)
+		for (c = 0; c < children; c++) {
 			if (child[c] == NULL) {
 				nvlist_t *missing;
 				if (nvlist_alloc(&missing, NV_UNIQUE_NAME,
@@ -570,6 +689,7 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
 				}
 				child[c] = missing;
 			}
+		}
 
 		/*
 		 * Put all of this pool's top-level vdevs into a root vdev.
@@ -636,8 +756,11 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
 			continue;
 		}
 
-		if ((nvl = refresh_config(hdl, config)) == NULL)
-			goto error;
+		if ((nvl = refresh_config(hdl, config)) == NULL) {
+			nvlist_free(config);
+			config = NULL;
+			continue;
+		}
 
 		nvlist_free(config);
 		config = nvl;
@@ -777,56 +900,216 @@ zpool_read_label(int fd, nvlist_t **config)
 	return (0);
 }
 
+typedef struct rdsk_node {
+	char *rn_name;
+	int rn_dfd;
+	libzfs_handle_t *rn_hdl;
+	nvlist_t *rn_config;
+	avl_tree_t *rn_avl;
+	avl_node_t rn_node;
+	boolean_t rn_nozpool;
+} rdsk_node_t;
+
 static int
-geom_find_import(libzfs_handle_t *hdl, pool_list_t *pools)
+slice_cache_compare(const void *arg1, const void *arg2)
 {
-	char path[MAXPATHLEN];
-	struct gmesh mesh;
-	struct gclass *mp;
-	struct ggeom *gp;
-	struct gprovider *pp;
+	const char  *nm1 = ((rdsk_node_t *)arg1)->rn_name;
+	const char  *nm2 = ((rdsk_node_t *)arg2)->rn_name;
+	char *nm1slice, *nm2slice;
+	int rv;
+
+	/*
+	 * slices zero and two are the most likely to provide results,
+	 * so put those first
+	 */
+	nm1slice = strstr(nm1, "s0");
+	nm2slice = strstr(nm2, "s0");
+	if (nm1slice && !nm2slice) {
+		return (-1);
+	}
+	if (!nm1slice && nm2slice) {
+		return (1);
+	}
+	nm1slice = strstr(nm1, "s2");
+	nm2slice = strstr(nm2, "s2");
+	if (nm1slice && !nm2slice) {
+		return (-1);
+	}
+	if (!nm1slice && nm2slice) {
+		return (1);
+	}
+
+	rv = strcmp(nm1, nm2);
+	if (rv == 0)
+		return (0);
+	return (rv > 0 ? 1 : -1);
+}
+
+#ifdef sun
+static void
+check_one_slice(avl_tree_t *r, char *diskname, uint_t partno,
+    diskaddr_t size, uint_t blksz)
+{
+	rdsk_node_t tmpnode;
+	rdsk_node_t *node;
+	char sname[MAXNAMELEN];
+
+	tmpnode.rn_name = &sname[0];
+	(void) snprintf(tmpnode.rn_name, MAXNAMELEN, "%s%u",
+	    diskname, partno);
+	/*
+	 * protect against division by zero for disk labels that
+	 * contain a bogus sector size
+	 */
+	if (blksz == 0)
+		blksz = DEV_BSIZE;
+	/* too small to contain a zpool? */
+	if ((size < (SPA_MINDEVSIZE / blksz)) &&
+	    (node = avl_find(r, &tmpnode, NULL)))
+		node->rn_nozpool = B_TRUE;
+}
+#endif	/* sun */
+
+static void
+nozpool_all_slices(avl_tree_t *r, const char *sname)
+{
+#ifdef sun
+	char diskname[MAXNAMELEN];
+	char *ptr;
+	int i;
+
+	(void) strncpy(diskname, sname, MAXNAMELEN);
+	if (((ptr = strrchr(diskname, 's')) == NULL) &&
+	    ((ptr = strrchr(diskname, 'p')) == NULL))
+		return;
+	ptr[0] = 's';
+	ptr[1] = '\0';
+	for (i = 0; i < NDKMAP; i++)
+		check_one_slice(r, diskname, i, 0, 1);
+	ptr[0] = 'p';
+	for (i = 0; i <= FD_NUMPART; i++)
+		check_one_slice(r, diskname, i, 0, 1);
+#endif	/* sun */
+}
+
+static void
+check_slices(avl_tree_t *r, int fd, const char *sname)
+{
+#ifdef sun
+	struct extvtoc vtoc;
+	struct dk_gpt *gpt;
+	char diskname[MAXNAMELEN];
+	char *ptr;
+	int i;
+
+	(void) strncpy(diskname, sname, MAXNAMELEN);
+	if ((ptr = strrchr(diskname, 's')) == NULL || !isdigit(ptr[1]))
+		return;
+	ptr[1] = '\0';
+
+	if (read_extvtoc(fd, &vtoc) >= 0) {
+		for (i = 0; i < NDKMAP; i++)
+			check_one_slice(r, diskname, i,
+			    vtoc.v_part[i].p_size, vtoc.v_sectorsz);
+	} else if (efi_alloc_and_read(fd, &gpt) >= 0) {
+		/*
+		 * on x86 we'll still have leftover links that point
+		 * to slices s[9-15], so use NDKMAP instead
+		 */
+		for (i = 0; i < NDKMAP; i++)
+			check_one_slice(r, diskname, i,
+			    gpt->efi_parts[i].p_size, gpt->efi_lbasize);
+		/* nodes p[1-4] are never used with EFI labels */
+		ptr[0] = 'p';
+		for (i = 1; i <= FD_NUMPART; i++)
+			check_one_slice(r, diskname, i, 0, 1);
+		efi_free(gpt);
+	}
+#endif	/* sun */
+}
+
+static void
+zpool_open_func(void *arg)
+{
+	rdsk_node_t *rn = arg;
+	struct stat64 statbuf;
 	nvlist_t *config;
-	int fd, ret = 0;
+	int fd;
 
+	if (rn->rn_nozpool)
+		return;
+	if ((fd = openat64(rn->rn_dfd, rn->rn_name, O_RDONLY)) < 0) {
+		/* symlink to a device that's no longer there */
+		if (errno == ENOENT)
+			nozpool_all_slices(rn->rn_avl, rn->rn_name);
+		return;
+	}
 	/*
-	 * Go through and read the label configuration information from every
-	 * GEOM provider, organizing the information according to pool GUID
-	 * and toplevel GUID.
+	 * Ignore failed stats.  We only want regular
+	 * files, character devs and block devs.
 	 */
+	if (fstat64(fd, &statbuf) != 0 ||
+	    (!S_ISREG(statbuf.st_mode) &&
+	    !S_ISCHR(statbuf.st_mode) &&
+	    !S_ISBLK(statbuf.st_mode))) {
+		(void) close(fd);
+		return;
+	}
+	/* this file is too small to hold a zpool */
+	if (S_ISREG(statbuf.st_mode) &&
+	    statbuf.st_size < SPA_MINDEVSIZE) {
+		(void) close(fd);
+		return;
+	} else if (!S_ISREG(statbuf.st_mode)) {
+		/*
+		 * Try to read the disk label first so we don't have to
+		 * open a bunch of minor nodes that can't have a zpool.
+		 */
+		check_slices(rn->rn_avl, fd, rn->rn_name);
+	}
 
-	fd = geom_gettree(&mesh);
-	assert(fd == 0);
+	if ((zpool_read_label(fd, &config)) != 0) {
+		(void) close(fd);
+		(void) no_memory(rn->rn_hdl);
+		return;
+	}
+	(void) close(fd);
 
-	LIST_FOREACH(mp, &mesh.lg_class, lg_class) {
-        	LIST_FOREACH(gp, &mp->lg_geom, lg_geom) {
-			LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
-				if ((fd = g_open(pp->lg_name, 0)) < 0)
-					continue;
 
-				(void) snprintf(path, sizeof (path), "%s%s",
-				    _PATH_DEV, pp->lg_name);
+	rn->rn_config = config;
+	if (config != NULL) {
+		assert(rn->rn_nozpool == B_FALSE);
+	}
+}
 
-				if ((zpool_read_label(fd, &config)) != 0) {
-					(void) g_close(fd);
-					(void) no_memory(hdl);
-					goto error;
-				}
+/*
+ * Given a file descriptor, clear (zero) the label information.  This function
+ * is currently only used in the appliance stack as part of the ZFS sysevent
+ * module.
+ */
+int
+zpool_clear_label(int fd)
+{
+	struct stat64 statbuf;
+	int l;
+	vdev_label_t *label;
+	uint64_t size;
 
-				(void) g_close(fd);
+	if (fstat64(fd, &statbuf) == -1)
+		return (0);
+	size = P2ALIGN_TYPED(statbuf.st_size, sizeof (vdev_label_t), uint64_t);
 
-				if (config == NULL)
-					continue;
+	if ((label = calloc(sizeof (vdev_label_t), 1)) == NULL)
+		return (-1);
 
-				if (add_config(hdl, pools, path, config) != 0) {
-					ret = -1;
-					goto error;
-				}
-			}
-		}
+	for (l = 0; l < VDEV_LABELS; l++) {
+		if (pwrite64(fd, label, sizeof (vdev_label_t),
+		    label_offset(size, l)) != sizeof (vdev_label_t))
+			return (-1);
 	}
-error:
-	geom_deletetree(&mesh);
-	return (ret);
+
+	free(label);
+	return (0);
 }
 
 /*
@@ -837,30 +1120,28 @@ error:
  * to import a specific pool.
  */
 static nvlist_t *
-zpool_find_import_impl(libzfs_handle_t *hdl, int argc, char **argv,
-    boolean_t active_ok, char *poolname, uint64_t guid)
+zpool_find_import_impl(libzfs_handle_t *hdl, importargs_t *iarg)
 {
-	int i;
+	int i, dirs = iarg->paths;
 	DIR *dirp = NULL;
 	struct dirent64 *dp;
 	char path[MAXPATHLEN];
-	char *end;
+	char *end, **dir = iarg->path;
 	size_t pathleft;
-	struct stat64 statbuf;
-	nvlist_t *ret = NULL, *config;
+	nvlist_t *ret = NULL;
 	static char *default_dir = "/dev/dsk";
-	int fd;
 	pool_list_t pools = { 0 };
 	pool_entry_t *pe, *penext;
 	vdev_entry_t *ve, *venext;
 	config_entry_t *ce, *cenext;
 	name_entry_t *ne, *nenext;
+	avl_tree_t slice_cache;
+	rdsk_node_t *slice;
+	void *cookie;
 
-	verify(poolname == NULL || guid == 0);
-
-	if (argc == 0) {
-		argc = 1;
-		argv = &default_dir;
+	if (dirs == 0) {
+		dirs = 1;
+		dir = &default_dir;
 	}
 
 	/*
@@ -868,15 +1149,15 @@ zpool_find_import_impl(libzfs_handle_t *hdl, int argc, char **argv,
 	 * possible device, organizing the information according to pool GUID
 	 * and toplevel GUID.
 	 */
-	for (i = 0; i < argc; i++) {
+	for (i = 0; i < dirs; i++) {
+		tpool_t *t;
 		char *rdsk;
 		int dfd;
 
 		/* use realpath to normalize the path */
-		if (realpath(argv[i], path) == 0) {
+		if (realpath(dir[i], path) == 0) {
 			(void) zfs_error_fmt(hdl, EZFS_BADPATH,
-			    dgettext(TEXT_DOMAIN, "cannot open '%s'"),
-			    argv[i]);
+			    dgettext(TEXT_DOMAIN, "cannot open '%s'"), dir[i]);
 			goto error;
 		}
 		end = &path[strlen(path)];
@@ -884,22 +1165,18 @@ zpool_find_import_impl(libzfs_handle_t *hdl, int argc, char **argv,
 		*end = 0;
 		pathleft = &path[sizeof (path)] - end;
 
-		if (strcmp(argv[i], default_dir) == 0) {
-			geom_find_import(hdl, &pools);
-			continue;
-		}
-
 		/*
 		 * Using raw devices instead of block devices when we're
 		 * reading the labels skips a bunch of slow operations during
 		 * close(2) processing, so we replace /dev/dsk with /dev/rdsk.
 		 */
 		if (strcmp(path, "/dev/dsk/") == 0)
-			rdsk = "/dev/rdsk/";
+			rdsk = "/dev/";
 		else
 			rdsk = path;
 
-		if ((dirp = opendir(rdsk)) == NULL) {
+		if ((dfd = open64(rdsk, O_RDONLY)) < 0 ||
+		    (dirp = fdopendir(dfd)) == NULL) {
 			zfs_error_aux(hdl, strerror(errno));
 			(void) zfs_error_fmt(hdl, EZFS_BADPATH,
 			    dgettext(TEXT_DOMAIN, "cannot open '%s'"),
@@ -907,6 +1184,41 @@ zpool_find_import_impl(libzfs_handle_t *hdl, int argc, char **argv,
 			goto error;
 		}
 
+		avl_create(&slice_cache, slice_cache_compare,
+		    sizeof (rdsk_node_t), offsetof(rdsk_node_t, rn_node));
+
+		if (strcmp(rdsk, "/dev/") == 0) {
+			struct gmesh mesh;
+			struct gclass *mp;
+			struct ggeom *gp;
+			struct gprovider *pp;
+
+			errno = geom_gettree(&mesh);
+			if (errno != 0) {
+				zfs_error_aux(hdl, strerror(errno));
+				(void) zfs_error_fmt(hdl, EZFS_BADPATH,
+				    dgettext(TEXT_DOMAIN, "cannot get GEOM tree"));
+				goto error;
+			}
+
+			LIST_FOREACH(mp, &mesh.lg_class, lg_class) {
+		        	LIST_FOREACH(gp, &mp->lg_geom, lg_geom) {
+					LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
+						slice = zfs_alloc(hdl, sizeof (rdsk_node_t));
+						slice->rn_name = zfs_strdup(hdl, pp->lg_name);
+						slice->rn_avl = &slice_cache;
+						slice->rn_dfd = dfd;
+						slice->rn_hdl = hdl;
+						slice->rn_nozpool = B_FALSE;
+						avl_add(&slice_cache, slice);
+					}
+				}
+			}
+
+			geom_deletetree(&mesh);
+			goto skipdir;
+		}
+
 		/*
 		 * This is not MT-safe, but we have no MT consumers of libzfs
 		 */
@@ -916,49 +1228,54 @@ zpool_find_import_impl(libzfs_handle_t *hdl, int argc, char **argv,
 			    (name[1] == 0 || (name[1] == '.' && name[2] == 0)))
 				continue;
 
-			(void) snprintf(path, sizeof (path), "%s/%s", rdsk,
-			    dp->d_name);
-
-			if ((fd = open64(path, O_RDONLY)) < 0)
-				continue;
-
-			/*
-			 * Ignore failed stats.  We only want regular
-			 * files, character devs and block devs.
-			 */
-			if (fstat64(fd, &statbuf) != 0 ||
-			    (!S_ISREG(statbuf.st_mode) &&
-			    !S_ISCHR(statbuf.st_mode) &&
-			    !S_ISBLK(statbuf.st_mode))) {
-				(void) close(fd);
-				continue;
-			}
-
-			if ((zpool_read_label(fd, &config)) != 0) {
-				(void) close(fd);
-				(void) no_memory(hdl);
-				goto error;
-			}
-
-			(void) close(fd);
-
-			if (config != NULL) {
+			slice = zfs_alloc(hdl, sizeof (rdsk_node_t));
+			slice->rn_name = zfs_strdup(hdl, name);
+			slice->rn_avl = &slice_cache;
+			slice->rn_dfd = dfd;
+			slice->rn_hdl = hdl;
+			slice->rn_nozpool = B_FALSE;
+			avl_add(&slice_cache, slice);
+		}
+skipdir:
+		/*
+		 * create a thread pool to do all of this in parallel;
+		 * rn_nozpool is not protected, so this is racy in that
+		 * multiple tasks could decide that the same slice can
+		 * not hold a zpool, which is benign.  Also choose
+		 * double the number of processors; we hold a lot of
+		 * locks in the kernel, so going beyond this doesn't
+		 * buy us much.
+		 */
+		t = tpool_create(1, 2 * sysconf(_SC_NPROCESSORS_ONLN),
+		    0, NULL);
+		for (slice = avl_first(&slice_cache); slice;
+		    (slice = avl_walk(&slice_cache, slice,
+		    AVL_AFTER)))
+			(void) tpool_dispatch(t, zpool_open_func, slice);
+		tpool_wait(t);
+		tpool_destroy(t);
+
+		cookie = NULL;
+		while ((slice = avl_destroy_nodes(&slice_cache,
+		    &cookie)) != NULL) {
+			if (slice->rn_config != NULL) {
+				nvlist_t *config = slice->rn_config;
 				boolean_t matched = B_TRUE;
 
-				if (poolname != NULL) {
+				if (iarg->poolname != NULL) {
 					char *pname;
 
 					matched = nvlist_lookup_string(config,
 					    ZPOOL_CONFIG_POOL_NAME,
 					    &pname) == 0 &&
-					    strcmp(poolname, pname) == 0;
-				} else if (guid != 0) {
+					    strcmp(iarg->poolname, pname) == 0;
+				} else if (iarg->guid != 0) {
 					uint64_t this_guid;
 
 					matched = nvlist_lookup_uint64(config,
 					    ZPOOL_CONFIG_POOL_GUID,
 					    &this_guid) == 0 &&
-					    guid == this_guid;
+					    iarg->guid == this_guid;
 				}
 				if (!matched) {
 					nvlist_free(config);
@@ -966,17 +1283,20 @@ zpool_find_import_impl(libzfs_handle_t *hdl, int argc, char **argv,
 					continue;
 				}
 				/* use the non-raw path for the config */
-				(void) strlcpy(end, name, pathleft);
+				(void) strlcpy(end, slice->rn_name, pathleft);
 				if (add_config(hdl, &pools, path, config) != 0)
 					goto error;
 			}
+			free(slice->rn_name);
+			free(slice);
 		}
+		avl_destroy(&slice_cache);
 
 		(void) closedir(dirp);
 		dirp = NULL;
 	}
 
-	ret = get_configs(hdl, &pools, active_ok);
+	ret = get_configs(hdl, &pools, iarg->can_be_active);
 
 error:
 	for (pe = pools.pools; pe != NULL; pe = penext) {
@@ -1010,27 +1330,12 @@ error:
 nvlist_t *
 zpool_find_import(libzfs_handle_t *hdl, int argc, char **argv)
 {
-	return (zpool_find_import_impl(hdl, argc, argv, B_FALSE, NULL, 0));
-}
+	importargs_t iarg = { 0 };
 
-nvlist_t *
-zpool_find_import_byname(libzfs_handle_t *hdl, int argc, char **argv,
-    char *pool)
-{
-	return (zpool_find_import_impl(hdl, argc, argv, B_FALSE, pool, 0));
-}
+	iarg.paths = argc;
+	iarg.path = argv;
 
-nvlist_t *
-zpool_find_import_byguid(libzfs_handle_t *hdl, int argc, char **argv,
-    uint64_t guid)
-{
-	return (zpool_find_import_impl(hdl, argc, argv, B_FALSE, NULL, guid));
-}
-
-nvlist_t *
-zpool_find_import_activeok(libzfs_handle_t *hdl, int argc, char **argv)
-{
-	return (zpool_find_import_impl(hdl, argc, argv, B_TRUE, NULL, 0));
+	return (zpool_find_import_impl(hdl, &iarg));
 }
 
 /*
@@ -1152,6 +1457,46 @@ zpool_find_import_cached(libzfs_handle_t *hdl, const char *cachefile,
 	return (pools);
 }
 
+static int
+name_or_guid_exists(zpool_handle_t *zhp, void *data)
+{
+	importargs_t *import = data;
+	int found = 0;
+
+	if (import->poolname != NULL) {
+		char *pool_name;
+
+		verify(nvlist_lookup_string(zhp->zpool_config,
+		    ZPOOL_CONFIG_POOL_NAME, &pool_name) == 0);
+		if (strcmp(pool_name, import->poolname) == 0)
+			found = 1;
+	} else {
+		uint64_t pool_guid;
+
+		verify(nvlist_lookup_uint64(zhp->zpool_config,
+		    ZPOOL_CONFIG_POOL_GUID, &pool_guid) == 0);
+		if (pool_guid == import->guid)
+			found = 1;
+	}
+
+	zpool_close(zhp);
+	return (found);
+}
+
+nvlist_t *
+zpool_search_import(libzfs_handle_t *hdl, importargs_t *import)
+{
+	verify(import->poolname == NULL || import->guid == 0);
+
+	if (import->unique)
+		import->exists = zpool_iter(hdl, name_or_guid_exists, import);
+
+	if (import->cachefile != NULL)
+		return (zpool_find_import_cached(hdl, import->cachefile,
+		    import->poolname, import->guid));
+
+	return (zpool_find_import_impl(hdl, import));
+}
 
 boolean_t
 find_guid(nvlist_t *nv, uint64_t guid)
@@ -1251,6 +1596,17 @@ zpool_in_use(libzfs_handle_t *hdl, int fd, pool_state_t *state, char **namestr,
 
 	switch (stateval) {
 	case POOL_STATE_EXPORTED:
+		/*
+		 * A pool with an exported state may in fact be imported
+		 * read-only, so check the in-core state to see if it's
+		 * active and imported read-only.  If it is, set
+		 * its state to active.
+		 */
+		if (pool_active(hdl, name, guid, &isactive) == 0 && isactive &&
+		    (zhp = zpool_open_canfail(hdl, name)) != NULL &&
+		    zpool_get_prop_int(zhp, ZPOOL_PROP_READONLY, NULL))
+			stateval = POOL_STATE_ACTIVE;
+
 		ret = B_TRUE;
 		break;
 
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_mount.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_mount.c
index 56c0968..b2959dd 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_mount.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_mount.c
@@ -20,8 +20,7 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 /*
@@ -44,17 +43,14 @@
  *
  * 	zfs_is_shared_nfs()
  * 	zfs_is_shared_smb()
- * 	zfs_is_shared_iscsi()
  * 	zfs_share_proto()
  * 	zfs_shareall();
- * 	zfs_share_iscsi()
  * 	zfs_unshare_nfs()
  * 	zfs_unshare_smb()
  * 	zfs_unshareall_nfs()
  *	zfs_unshareall_smb()
  *	zfs_unshareall()
  *	zfs_unshareall_bypath()
- * 	zfs_unshare_iscsi()
  *
  * The following functions are available for pool consumers, and will
  * mount/unmount and share/unshare all datasets within pool:
@@ -82,18 +78,12 @@
 #include "libzfs_impl.h"
 
 #include <libshare.h>
-
 #define	MAXISALEN	257	/* based on sysinfo(2) man page */
 
 static int zfs_share_proto(zfs_handle_t *, zfs_share_proto_t *);
 zfs_share_type_t zfs_is_shared_proto(zfs_handle_t *, char **,
     zfs_share_proto_t);
 
-static int (*iscsitgt_zfs_share)(const char *);
-static int (*iscsitgt_zfs_unshare)(const char *);
-static int (*iscsitgt_zfs_is_shared)(const char *);
-static int (*iscsitgt_svc_online)();
-
 /*
  * The share protocols table must be in the same order as the zfs_share_prot_t
  * enum in libzfs_impl.h
@@ -125,29 +115,6 @@ zfs_share_proto_t share_all_proto[] = {
 	PROTO_END
 };
 
-#pragma init(zfs_iscsi_init)
-static void
-zfs_iscsi_init(void)
-{
-	void *libiscsitgt;
-
-	if ((libiscsitgt = dlopen("/lib/libiscsitgt.so.1",
-	    RTLD_LAZY | RTLD_GLOBAL)) == NULL ||
-	    (iscsitgt_zfs_share = (int (*)(const char *))dlsym(libiscsitgt,
-	    "iscsitgt_zfs_share")) == NULL ||
-	    (iscsitgt_zfs_unshare = (int (*)(const char *))dlsym(libiscsitgt,
-	    "iscsitgt_zfs_unshare")) == NULL ||
-	    (iscsitgt_zfs_is_shared = (int (*)(const char *))dlsym(libiscsitgt,
-	    "iscsitgt_zfs_is_shared")) == NULL ||
-	    (iscsitgt_svc_online = (int (*)(const char *))dlsym(libiscsitgt,
-	    "iscsitgt_svc_online")) == NULL) {
-		iscsitgt_zfs_share = NULL;
-		iscsitgt_zfs_unshare = NULL;
-		iscsitgt_zfs_is_shared = NULL;
-		iscsitgt_svc_online = NULL;
-	}
-}
-
 /*
  * Search the sharetab for the given mountpoint and protocol, returning
  * a zfs_share_type_t value.
@@ -171,7 +138,7 @@ is_shared(libzfs_handle_t *hdl, const char *mountpoint, zfs_share_proto_t proto)
 
 		*tab = '\0';
 		if (strcmp(buf, mountpoint) == 0) {
-#if defined(sun)
+#ifdef sun
 			/*
 			 * the protocol field is the third field
 			 * skip over second field
@@ -204,7 +171,7 @@ is_shared(libzfs_handle_t *hdl, const char *mountpoint, zfs_share_proto_t proto)
 	return (SHARED_NOT_SHARED);
 }
 
-#if 0
+#ifdef sun
 /*
  * Returns true if the specified directory is empty.  If we can't open the
  * directory at all, return true so that the mount can fail with a more
@@ -309,6 +276,12 @@ zfs_mount(zfs_handle_t *zhp, const char *options, int flags)
 	else
 		(void) strlcpy(mntopts, options, sizeof (mntopts));
 
+	/*
+	 * If the pool is imported read-only then all mounts must be read-only
+	 */
+	if (zpool_get_prop_int(zhp->zpool_hdl, ZPOOL_PROP_READONLY, NULL))
+		flags |= MS_RDONLY;
+
 	if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
 		return (0);
 
@@ -323,7 +296,7 @@ zfs_mount(zfs_handle_t *zhp, const char *options, int flags)
 		}
 	}
 
-#if 0	/* FreeBSD: overlay mounts are not checked. */
+#ifdef sun	/* FreeBSD: overlay mounts are not checked. */
 	/*
 	 * Determine if the mountpoint is empty.  If so, refuse to perform the
 	 * mount.  We don't perform this check if MS_OVERLAY is specified, which
@@ -354,6 +327,18 @@ zfs_mount(zfs_handle_t *zhp, const char *options, int flags)
 		} else if (errno == EPERM) {
 			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 			    "Insufficient privileges"));
+		} else if (errno == ENOTSUP) {
+			char buf[256];
+			int spa_version;
+
+			VERIFY(zfs_spa_version(zhp, &spa_version) == 0);
+			(void) snprintf(buf, sizeof (buf),
+			    dgettext(TEXT_DOMAIN, "Can't mount a version %lld "
+			    "file system on a version %d pool. Pool must be"
+			    " upgraded to mount this file system."),
+			    (u_longlong_t)zfs_prop_get_int(zhp,
+			    ZFS_PROP_VERSION), spa_version);
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, buf));
 		} else {
 			zfs_error_aux(hdl, strerror(errno));
 		}
@@ -374,7 +359,7 @@ zfs_mount(zfs_handle_t *zhp, const char *options, int flags)
 static int
 unmount_one(libzfs_handle_t *hdl, const char *mountpoint, int flags)
 {
-	if (unmount(mountpoint, flags) != 0) {
+	if (umount2(mountpoint, flags) != 0) {
 		zfs_error_aux(hdl, strerror(errno));
 		return (zfs_error_fmt(hdl, EZFS_UMOUNTFAILED,
 		    dgettext(TEXT_DOMAIN, "cannot unmount '%s'"),
@@ -454,7 +439,7 @@ zfs_is_shared(zfs_handle_t *zhp)
 	zfs_share_proto_t *curr_proto;
 
 	if (ZFS_IS_VOLUME(zhp))
-		return (zfs_is_shared_iscsi(zhp));
+		return (B_FALSE);
 
 	for (curr_proto = share_all_proto; *curr_proto != PROTO_END;
 	    curr_proto++)
@@ -466,18 +451,14 @@ zfs_is_shared(zfs_handle_t *zhp)
 int
 zfs_share(zfs_handle_t *zhp)
 {
-	if (ZFS_IS_VOLUME(zhp))
-		return (zfs_share_iscsi(zhp));
-
+	assert(!ZFS_IS_VOLUME(zhp));
 	return (zfs_share_proto(zhp, share_all_proto));
 }
 
 int
 zfs_unshare(zfs_handle_t *zhp)
 {
-	if (ZFS_IS_VOLUME(zhp))
-		return (zfs_unshare_iscsi(zhp));
-
+	assert(!ZFS_IS_VOLUME(zhp));
 	return (zfs_unshareall(zhp));
 }
 
@@ -525,7 +506,7 @@ zfs_is_shared_smb(zfs_handle_t *zhp, char **where)
  * initialized in _zfs_init_libshare() are actually present.
  */
 
-#if 0
+#ifdef sun
 static sa_handle_t (*_sa_init)(int);
 static void (*_sa_fini)(sa_handle_t);
 static sa_share_t (*_sa_find_share)(sa_handle_t, char *);
@@ -552,7 +533,7 @@ static void (*_sa_update_sharetab_ts)(sa_handle_t);
 static void
 _zfs_init_libshare(void)
 {
-#if 0
+#ifdef sun
 	void *libshare;
 	char path[MAXPATHLEN];
 	char isa[MAXISALEN];
@@ -623,7 +604,7 @@ zfs_init_libshare(libzfs_handle_t *zhandle, int service)
 {
 	int ret = SA_OK;
 
-#if 0
+#ifdef sun
 	if (_sa_init == NULL)
 		ret = SA_CONFIG_ERR;
 
@@ -664,7 +645,7 @@ void
 zfs_uninit_libshare(libzfs_handle_t *zhandle)
 {
 	if (zhandle != NULL && zhandle->libzfs_sharehdl != NULL) {
-#if 0
+#ifdef sun
 		if (_sa_fini != NULL)
 			_sa_fini(zhandle->libzfs_sharehdl);
 #endif
@@ -681,7 +662,7 @@ zfs_uninit_libshare(libzfs_handle_t *zhandle)
 int
 zfs_parse_options(char *options, zfs_share_proto_t proto)
 {
-#if 0
+#ifdef sun
 	if (_sa_parse_legacy_options != NULL) {
 		return (_sa_parse_legacy_options(NULL, options,
 		    proto_table[proto].p_name));
@@ -692,7 +673,7 @@ zfs_parse_options(char *options, zfs_share_proto_t proto)
 #endif
 }
 
-#if 0
+#ifdef sun
 /*
  * zfs_sa_find_share(handle, path)
  *
@@ -734,7 +715,7 @@ zfs_sa_disable_share(sa_share_t share, char *proto)
 		return (_sa_disable_share(share, proto));
 	return (SA_CONFIG_ERR);
 }
-#endif
+#endif	/* sun */
 
 /*
  * Share the given filesystem according to the options in the specified
@@ -755,6 +736,16 @@ zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
 	if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
 		return (0);
 
+#ifdef sun
+	if ((ret = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) {
+		(void) zfs_error_fmt(hdl, EZFS_SHARENFSFAILED,
+		    dgettext(TEXT_DOMAIN, "cannot share '%s': %s"),
+		    zfs_get_name(zhp), _sa_errorstr != NULL ?
+		    _sa_errorstr(ret) : "");
+		return (-1);
+	}
+#endif
+
 	for (curr_proto = proto; *curr_proto != PROTO_END; curr_proto++) {
 		/*
 		 * Return success if there are no share options.
@@ -774,13 +765,7 @@ zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
 		if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED))
 			continue;
 
-		if (*curr_proto != PROTO_NFS) {
-			fprintf(stderr, "Unsupported share protocol: %d.\n",
-			    *curr_proto);
-			continue;
-		}
-
-#if 0
+#ifdef sun
 		share = zfs_sa_find_share(hdl->libzfs_sharehdl, mountpoint);
 		if (share == NULL) {
 			/*
@@ -819,6 +804,12 @@ zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
 			}
 		} else
 #else
+		if (*curr_proto != PROTO_NFS) {
+			fprintf(stderr, "Unsupported share protocol: %d.\n",
+			    *curr_proto);
+			continue;
+		}
+
 		if (strcmp(shareopts, "on") == 0)
 			error = fsshare(ZFS_EXPORTS_PATH, mountpoint, "");
 		else
@@ -832,6 +823,7 @@ zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto)
 			    zfs_get_name(zhp));
 			return (-1);
 		}
+
 	}
 	return (0);
 }
@@ -862,23 +854,58 @@ static int
 unshare_one(libzfs_handle_t *hdl, const char *name, const char *mountpoint,
     zfs_share_proto_t proto)
 {
+#ifdef sun
+	sa_share_t share;
+	int err;
+	char *mntpt;
+	/*
+	 * Mountpoint could get trashed if libshare calls getmntany
+	 * which it does during API initialization, so strdup the
+	 * value.
+	 */
+	mntpt = zfs_strdup(hdl, mountpoint);
+
+	/* make sure libshare initialized */
+	if ((err = zfs_init_libshare(hdl, SA_INIT_SHARE_API)) != SA_OK) {
+		free(mntpt);	/* don't need the copy anymore */
+		return (zfs_error_fmt(hdl, EZFS_SHARENFSFAILED,
+		    dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"),
+		    name, _sa_errorstr(err)));
+	}
+
+	share = zfs_sa_find_share(hdl->libzfs_sharehdl, mntpt);
+	free(mntpt);	/* don't need the copy anymore */
+
+	if (share != NULL) {
+		err = zfs_sa_disable_share(share, proto_table[proto].p_name);
+		if (err != SA_OK) {
+			return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED,
+			    dgettext(TEXT_DOMAIN, "cannot unshare '%s': %s"),
+			    name, _sa_errorstr(err)));
+		}
+	} else {
+		return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED,
+		    dgettext(TEXT_DOMAIN, "cannot unshare '%s': not found"),
+		    name));
+	}
+#else
 	char buf[MAXPATHLEN];
 	FILE *fp;
-	int error;
+	int err;
 
 	if (proto != PROTO_NFS) {
 		fprintf(stderr, "No SMB support in FreeBSD yet.\n");
 		return (EOPNOTSUPP);
 	}
 
-	error = fsunshare(ZFS_EXPORTS_PATH, mountpoint);
-	if (error != 0) {
-		zfs_error_aux(hdl, "%s", strerror(error));
+	err = fsunshare(ZFS_EXPORTS_PATH, mountpoint);
+	if (err != 0) {
+		zfs_error_aux(hdl, "%s", strerror(err));
 		return (zfs_error_fmt(hdl, EZFS_UNSHARENFSFAILED,
 		    dgettext(TEXT_DOMAIN,
 		    "cannot unshare '%s'"), name));
 	}
-
+#endif
 	return (0);
 }
 
@@ -1011,99 +1038,29 @@ remove_mountpoint(zfs_handle_t *zhp)
 	}
 }
 
-boolean_t
-zfs_is_shared_iscsi(zfs_handle_t *zhp)
-{
-
-	/*
-	 * If iscsi deamon isn't running then we aren't shared
-	 */
-	if (iscsitgt_svc_online && iscsitgt_svc_online() == 1)
-		return (B_FALSE);
-	else
-		return (iscsitgt_zfs_is_shared != NULL &&
-		    iscsitgt_zfs_is_shared(zhp->zfs_name) != 0);
-}
-
-int
-zfs_share_iscsi(zfs_handle_t *zhp)
-{
-	char shareopts[ZFS_MAXPROPLEN];
-	const char *dataset = zhp->zfs_name;
-	libzfs_handle_t *hdl = zhp->zfs_hdl;
-
-	/*
-	 * Return success if there are no share options.
-	 */
-	if (zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
-	    sizeof (shareopts), NULL, NULL, 0, B_FALSE) != 0 ||
-	    strcmp(shareopts, "off") == 0)
-		return (0);
-
-/* We don't support iSCSI on FreeBSD yet. */
-#ifdef TODO
-	if (iscsitgt_zfs_share == NULL || iscsitgt_zfs_share(dataset) != 0) {
-		int error = EZFS_SHAREISCSIFAILED;
-
-		/*
-		 * If service isn't availabele and EPERM was
-		 * returned then use special error.
-		 */
-		if (iscsitgt_svc_online && errno == EPERM &&
-		    (iscsitgt_svc_online() != 0))
-			error = EZFS_ISCSISVCUNAVAIL;
-
-		return (zfs_error_fmt(hdl, error,
-		    dgettext(TEXT_DOMAIN, "cannot share '%s'"), dataset));
-	}
-#endif
-
-	return (0);
-}
-
-int
-zfs_unshare_iscsi(zfs_handle_t *zhp)
+void
+libzfs_add_handle(get_all_cb_t *cbp, zfs_handle_t *zhp)
 {
-	const char *dataset = zfs_get_name(zhp);
-	libzfs_handle_t *hdl = zhp->zfs_hdl;
-
-/* We don't support iSCSI on FreeBSD yet. */
-#ifdef TODO
-	/*
-	 * Return if the volume is not shared
-	 */
-	if (zfs_is_shared_iscsi(zhp) != SHARED_ISCSI)
-		return (0);
+	if (cbp->cb_alloc == cbp->cb_used) {
+		size_t newsz;
+		void *ptr;
 
-	/*
-	 * If this fails with ENODEV it indicates that zvol wasn't shared so
-	 * we should return success in that case.
-	 */
-	if (iscsitgt_zfs_unshare == NULL ||
-	    (iscsitgt_zfs_unshare(dataset) != 0 && errno != ENODEV)) {
-		if (errno == EPERM)
-			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-			    "Insufficient privileges to unshare iscsi"));
-		return (zfs_error_fmt(hdl, EZFS_UNSHAREISCSIFAILED,
-		    dgettext(TEXT_DOMAIN, "cannot unshare '%s'"), dataset));
+		newsz = cbp->cb_alloc ? cbp->cb_alloc * 2 : 64;
+		ptr = zfs_realloc(zhp->zfs_hdl,
+		    cbp->cb_handles, cbp->cb_alloc * sizeof (void *),
+		    newsz * sizeof (void *));
+		cbp->cb_handles = ptr;
+		cbp->cb_alloc = newsz;
 	}
-#endif
-
-	return (0);
+	cbp->cb_handles[cbp->cb_used++] = zhp;
 }
 
-typedef struct mount_cbdata {
-	zfs_handle_t	**cb_datasets;
-	int 		cb_used;
-	int		cb_alloc;
-} mount_cbdata_t;
-
 static int
 mount_cb(zfs_handle_t *zhp, void *data)
 {
-	mount_cbdata_t *cbp = data;
+	get_all_cb_t *cbp = data;
 
-	if (!(zfs_get_type(zhp) & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME))) {
+	if (!(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM)) {
 		zfs_close(zhp);
 		return (0);
 	}
@@ -1113,25 +1070,16 @@ mount_cb(zfs_handle_t *zhp, void *data)
 		return (0);
 	}
 
-	if (cbp->cb_alloc == cbp->cb_used) {
-		void *ptr;
-
-		if ((ptr = zfs_realloc(zhp->zfs_hdl,
-		    cbp->cb_datasets, cbp->cb_alloc * sizeof (void *),
-		    cbp->cb_alloc * 2 * sizeof (void *))) == NULL)
-			return (-1);
-		cbp->cb_datasets = ptr;
-
-		cbp->cb_alloc *= 2;
+	libzfs_add_handle(cbp, zhp);
+	if (zfs_iter_filesystems(zhp, mount_cb, cbp) != 0) {
+		zfs_close(zhp);
+		return (-1);
 	}
-
-	cbp->cb_datasets[cbp->cb_used++] = zhp;
-
-	return (zfs_iter_filesystems(zhp, mount_cb, cbp));
+	return (0);
 }
 
-static int
-dataset_cmp(const void *a, const void *b)
+int
+libzfs_dataset_cmp(const void *a, const void *b)
 {
 	zfs_handle_t **za = (zfs_handle_t **)a;
 	zfs_handle_t **zb = (zfs_handle_t **)b;
@@ -1169,7 +1117,7 @@ dataset_cmp(const void *a, const void *b)
 int
 zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
 {
-	mount_cbdata_t cb = { 0 };
+	get_all_cb_t cb = { 0 };
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
 	zfs_handle_t *zfsp;
 	int i, ret = -1;
@@ -1178,23 +1126,17 @@ zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
 	/*
 	 * Gather all non-snap datasets within the pool.
 	 */
-	if ((cb.cb_datasets = zfs_alloc(hdl, 4 * sizeof (void *))) == NULL)
-		return (-1);
-	cb.cb_alloc = 4;
-
 	if ((zfsp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_DATASET)) == NULL)
 		goto out;
 
-	cb.cb_datasets[0] = zfsp;
-	cb.cb_used = 1;
-
+	libzfs_add_handle(&cb, zfsp);
 	if (zfs_iter_filesystems(zfsp, mount_cb, &cb) != 0)
 		goto out;
-
 	/*
 	 * Sort the datasets by mountpoint.
 	 */
-	qsort(cb.cb_datasets, cb.cb_used, sizeof (void *), dataset_cmp);
+	qsort(cb.cb_handles, cb.cb_used, sizeof (void *),
+	    libzfs_dataset_cmp);
 
 	/*
 	 * And mount all the datasets, keeping track of which ones
@@ -1206,7 +1148,7 @@ zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
 
 	ret = 0;
 	for (i = 0; i < cb.cb_used; i++) {
-		if (zfs_mount(cb.cb_datasets[i], mntopts, flags) != 0)
+		if (zfs_mount(cb.cb_handles[i], mntopts, flags) != 0)
 			ret = -1;
 		else
 			good[i] = 1;
@@ -1219,7 +1161,7 @@ zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
 	 * zfs_alloc is supposed to exit if memory isn't available.
 	 */
 	for (i = 0; i < cb.cb_used; i++) {
-		if (good[i] && zfs_share(cb.cb_datasets[i]) != 0)
+		if (good[i] && zfs_share(cb.cb_handles[i]) != 0)
 			ret = -1;
 	}
 
@@ -1227,34 +1169,12 @@ zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
 
 out:
 	for (i = 0; i < cb.cb_used; i++)
-		zfs_close(cb.cb_datasets[i]);
-	free(cb.cb_datasets);
+		zfs_close(cb.cb_handles[i]);
+	free(cb.cb_handles);
 
 	return (ret);
 }
 
-
-static int
-zvol_cb(const char *dataset, void *data)
-{
-	libzfs_handle_t *hdl = data;
-	zfs_handle_t *zhp;
-
-	/*
-	 * Ignore snapshots and ignore failures from non-existant datasets.
-	 */
-	if (strchr(dataset, '@') != NULL ||
-	    (zhp = zfs_open(hdl, dataset, ZFS_TYPE_VOLUME)) == NULL)
-		return (0);
-
-	if (zfs_unshare_iscsi(zhp) != 0)
-		return (-1);
-
-	zfs_close(zhp);
-
-	return (0);
-}
-
 static int
 mountpoint_compare(const void *a, const void *b)
 {
@@ -1264,6 +1184,8 @@ mountpoint_compare(const void *a, const void *b)
 	return (strcmp(mountb, mounta));
 }
 
+/* alias for 2002/240 */
+#pragma weak zpool_unmount_datasets = zpool_disable_datasets
 /*
  * Unshare and unmount all datasets within the given pool.  We don't want to
  * rely on traversing the DSL to discover the filesystems within the pool,
@@ -1271,46 +1193,38 @@ mountpoint_compare(const void *a, const void *b)
  * arbitrarily (on I/O error, for example).  Instead, we walk /etc/mnttab and
  * gather all the filesystems that are currently mounted.
  */
-#pragma weak zpool_unmount_datasets = zpool_disable_datasets
 int
 zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force)
 {
 	int used, alloc;
-	struct statfs *sfs;
+	struct mnttab entry;
 	size_t namelen;
 	char **mountpoints = NULL;
 	zfs_handle_t **datasets = NULL;
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
-	int i, j, n;
+	int i;
 	int ret = -1;
 	int flags = (force ? MS_FORCE : 0);
 
-	/*
-	 * First unshare all zvols.
-	 */
-	if (zpool_iter_zvol(zhp, zvol_cb, hdl) != 0)
-		return (-1);
-
 	namelen = strlen(zhp->zpool_name);
 
+	rewind(hdl->libzfs_mnttab);
 	used = alloc = 0;
-	if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
-		fprintf(stderr, "getmntinfo(): %s\n", strerror(errno));
-		return (-1);
-	}
-	for (j = 0; j < n; j++) {
+	while (getmntent(hdl->libzfs_mnttab, &entry) == 0) {
 		/*
 		 * Ignore non-ZFS entries.
 		 */
-		if (strcmp(sfs[j].f_fstypename, MNTTYPE_ZFS) != 0)
+		if (entry.mnt_fstype == NULL ||
+		    strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
 			continue;
 
 		/*
 		 * Ignore filesystems not within this pool.
 		 */
-		if (strncmp(sfs[j].f_mntfromname, zhp->zpool_name, namelen) != 0 ||
-		    (sfs[j].f_mntfromname[namelen] != '/' &&
-		    sfs[j].f_mntfromname[namelen] != '\0'))
+		if (entry.mnt_mountp == NULL ||
+		    strncmp(entry.mnt_special, zhp->zpool_name, namelen) != 0 ||
+		    (entry.mnt_special[namelen] != '/' &&
+		    entry.mnt_special[namelen] != '\0'))
 			continue;
 
 		/*
@@ -1348,7 +1262,7 @@ zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force)
 		}
 
 		if ((mountpoints[used] = zfs_strdup(hdl,
-		    sfs[j].f_mntonname)) == NULL)
+		    entry.mnt_mountp)) == NULL)
 			goto out;
 
 		/*
@@ -1356,7 +1270,7 @@ zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force)
 		 * is only used to determine if we need to remove the underlying
 		 * mountpoint, so failure is not fatal.
 		 */
-		datasets[used] = make_dataset_handle(hdl, sfs[j].f_mntfromname);
+		datasets[used] = make_dataset_handle(hdl, entry.mnt_special);
 
 		used++;
 	}
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c
index c7edd2e..c2306ec 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c
@@ -20,41 +20,38 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <assert.h>
 #include <ctype.h>
 #include <errno.h>
 #include <devid.h>
-#include <dirent.h>
 #include <fcntl.h>
 #include <libintl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <strings.h>
 #include <unistd.h>
-#include <zone.h>
 #include <sys/zfs_ioctl.h>
-#include <sys/zio.h>
-#include <umem.h>
+#include <dlfcn.h>
 
 #include "zfs_namecheck.h"
 #include "zfs_prop.h"
 #include "libzfs_impl.h"
+#include "zfs_comutil.h"
 
 static int read_efi_label(nvlist_t *config, diskaddr_t *sb);
 
-#ifdef sun
-#if defined(__i386) || defined(__amd64)
-#define	BOOTCMD	"installgrub(1M)"
-#else
-#define	BOOTCMD	"installboot(1M)"
-#endif
-#endif	/* sun */
+#define	DISK_ROOT	"/dev/dsk"
+#define	RDISK_ROOT	"/dev/rdsk"
+#define	BACKUP_SLICE	"s2"
+
+typedef struct prop_flags {
+	int create:1;	/* Validate property on creation */
+	int import:1;	/* Validate property on import */
+} prop_flags_t;
 
 /*
  * ====================================================================
@@ -189,6 +186,8 @@ zpool_state_to_name(vdev_state_t state, vdev_aux_t aux)
 	case VDEV_STATE_CANT_OPEN:
 		if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG)
 			return (gettext("FAULTED"));
+		else if (aux == VDEV_AUX_SPLIT_POOL)
+			return (gettext("SPLIT"));
 		else
 			return (gettext("UNAVAIL"));
 	case VDEV_STATE_FAULTED:
@@ -269,8 +268,8 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len,
 
 		switch (prop) {
 		case ZPOOL_PROP_SIZE:
-		case ZPOOL_PROP_USED:
-		case ZPOOL_PROP_AVAILABLE:
+		case ZPOOL_PROP_ALLOCATED:
+		case ZPOOL_PROP_FREE:
 			(void) zfs_nicenum(intval, buf, len);
 			break;
 
@@ -279,11 +278,18 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len,
 			    (u_longlong_t)intval);
 			break;
 
+		case ZPOOL_PROP_DEDUPRATIO:
+			(void) snprintf(buf, len, "%llu.%02llux",
+			    (u_longlong_t)(intval / 100),
+			    (u_longlong_t)(intval % 100));
+			break;
+
 		case ZPOOL_PROP_HEALTH:
 			verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
 			    ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
 			verify(nvlist_lookup_uint64_array(nvroot,
-			    ZPOOL_CONFIG_STATS, (uint64_t **)&vs, &vsc) == 0);
+			    ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc)
+			    == 0);
 
 			(void) strlcpy(buf, zpool_state_to_name(intval,
 			    vs->vs_aux), len);
@@ -311,17 +317,6 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len,
 	return (0);
 }
 
-static boolean_t
-pool_is_bootable(zpool_handle_t *zhp)
-{
-	char bootfs[ZPOOL_MAXNAMELEN];
-
-	return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs,
-	    sizeof (bootfs), NULL) == 0 && strncmp(bootfs, "-",
-	    sizeof (bootfs)) != 0);
-}
-
-
 /*
  * Check if the bootfs name has the same pool name as it is set to.
  * Assuming bootfs is a valid dataset name.
@@ -364,6 +359,17 @@ pool_uses_efi(nvlist_t *config)
 	return (B_FALSE);
 }
 
+static boolean_t
+pool_is_bootable(zpool_handle_t *zhp)
+{
+	char bootfs[ZPOOL_MAXNAMELEN];
+
+	return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs,
+	    sizeof (bootfs), NULL) == 0 && strncmp(bootfs, "-",
+	    sizeof (bootfs)) != 0);
+}
+
+
 /*
  * Given an nvlist of zpool properties to be set, validate that they are
  * correct, and parse any numeric properties (index, boolean, etc) if they are
@@ -371,7 +377,7 @@ pool_uses_efi(nvlist_t *config)
  */
 static nvlist_t *
 zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
-    nvlist_t *props, uint64_t version, boolean_t create_or_import, char *errbuf)
+    nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf)
 {
 	nvpair_t *elem;
 	nvlist_t *retprops;
@@ -428,7 +434,7 @@ zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
 			break;
 
 		case ZPOOL_PROP_BOOTFS:
-			if (create_or_import) {
+			if (flags.create || flags.import) {
 				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 				    "property '%s' cannot be set at creation "
 				    "or import time"), propname);
@@ -465,7 +471,7 @@ zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
 			verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
 			    ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
 
-#if defined(sun)
+#ifdef sun
 			/*
 			 * bootfs property cannot be set on a disk which has
 			 * been EFI labeled.
@@ -478,12 +484,12 @@ zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
 				zpool_close(zhp);
 				goto error;
 			}
-#endif
+#endif	/* sun */
 			zpool_close(zhp);
 			break;
 
 		case ZPOOL_PROP_ALTROOT:
-			if (!create_or_import) {
+			if (!flags.create && !flags.import) {
 				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 				    "property '%s' can only be set during pool "
 				    "creation or import"), propname);
@@ -538,6 +544,16 @@ zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
 
 			*slash = '/';
 			break;
+
+		case ZPOOL_PROP_READONLY:
+			if (!flags.import) {
+				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+				    "property '%s' can only be set at "
+				    "import time"), propname);
+				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
+				goto error;
+			}
+			break;
 		}
 	}
 
@@ -559,6 +575,7 @@ zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval)
 	nvlist_t *nvl = NULL;
 	nvlist_t *realprops;
 	uint64_t version;
+	prop_flags_t flags = { 0 };
 
 	(void) snprintf(errbuf, sizeof (errbuf),
 	    dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
@@ -574,7 +591,7 @@ zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval)
 
 	version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
 	if ((realprops = zpool_valid_proplist(zhp->zpool_hdl,
-	    zhp->zpool_name, nvl, version, B_FALSE, errbuf)) == NULL) {
+	    zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) {
 		nvlist_free(nvl);
 		return (-1);
 	}
@@ -633,6 +650,12 @@ zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp)
 
 
 /*
+ * Don't start the slice at the default block of 34; many storage
+ * devices will use a stripe width of 128k, so start there instead.
+ */
+#define	NEW_START_BLOCK	256
+
+/*
  * Validate the given pool name, optionally putting an extended error message in
  * 'buf'.
  */
@@ -875,8 +898,10 @@ zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot,
 		return (-1);
 
 	if (props) {
+		prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE };
+
 		if ((zc_props = zpool_valid_proplist(hdl, pool, props,
-		    SPA_VERSION_1, B_TRUE, msg)) == NULL) {
+		    SPA_VERSION_1, flags, msg)) == NULL) {
 			goto create_failed;
 		}
 	}
@@ -994,16 +1019,12 @@ zpool_destroy(zpool_handle_t *zhp)
 	char msg[1024];
 
 	if (zhp->zpool_state == POOL_STATE_ACTIVE &&
-	    (zfp = zfs_open(zhp->zpool_hdl, zhp->zpool_name,
-	    ZFS_TYPE_FILESYSTEM)) == NULL)
-		return (-1);
-
-	if (zpool_remove_zvol_links(zhp) != 0)
+	    (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL)
 		return (-1);
 
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 
-	if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) {
+	if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) {
 		(void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
 		    "cannot destroy '%s'"), zhp->zpool_name);
 
@@ -1066,7 +1087,8 @@ zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
 				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 				    "device '%s' contains an EFI label and "
 				    "cannot be used on root pools."),
-				    zpool_vdev_name(hdl, NULL, spares[s]));
+				    zpool_vdev_name(hdl, NULL, spares[s],
+				    B_FALSE));
 				return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
 			}
 		}
@@ -1085,7 +1107,7 @@ zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
 		return (-1);
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 
-	if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
+	if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
 		switch (errno) {
 		case EBUSY:
 			/*
@@ -1161,9 +1183,6 @@ zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce)
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
 
-	if (zpool_remove_zvol_links(zhp) != 0)
-		return (-1);
-
 	(void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
 	    "cannot export '%s'"), zhp->zpool_name);
 
@@ -1202,6 +1221,132 @@ zpool_export_force(zpool_handle_t *zhp)
 	return (zpool_export_common(zhp, B_TRUE, B_TRUE));
 }
 
+static void
+zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun,
+    nvlist_t *config)
+{
+	nvlist_t *nv = NULL;
+	uint64_t rewindto;
+	int64_t loss = -1;
+	struct tm t;
+	char timestr[128];
+
+	if (!hdl->libzfs_printerr || config == NULL)
+		return;
+
+	if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0)
+		return;
+
+	if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
+		return;
+	(void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
+
+	if (localtime_r((time_t *)&rewindto, &t) != NULL &&
+	    strftime(timestr, 128, 0, &t) != 0) {
+		if (dryrun) {
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "Would be able to return %s "
+			    "to its state as of %s.\n"),
+			    name, timestr);
+		} else {
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "Pool %s returned to its state as of %s.\n"),
+			    name, timestr);
+		}
+		if (loss > 120) {
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "%s approximately %lld "),
+			    dryrun ? "Would discard" : "Discarded",
+			    (loss + 30) / 60);
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "minutes of transactions.\n"));
+		} else if (loss > 0) {
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "%s approximately %lld "),
+			    dryrun ? "Would discard" : "Discarded", loss);
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "seconds of transactions.\n"));
+		}
+	}
+}
+
+void
+zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason,
+    nvlist_t *config)
+{
+	nvlist_t *nv = NULL;
+	int64_t loss = -1;
+	uint64_t edata = UINT64_MAX;
+	uint64_t rewindto;
+	struct tm t;
+	char timestr[128];
+
+	if (!hdl->libzfs_printerr)
+		return;
+
+	if (reason >= 0)
+		(void) printf(dgettext(TEXT_DOMAIN, "action: "));
+	else
+		(void) printf(dgettext(TEXT_DOMAIN, "\t"));
+
+	/* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */
+	if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
+	    nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
+		goto no_info;
+
+	(void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
+	(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS,
+	    &edata);
+
+	(void) printf(dgettext(TEXT_DOMAIN,
+	    "Recovery is possible, but will result in some data loss.\n"));
+
+	if (localtime_r((time_t *)&rewindto, &t) != NULL &&
+	    strftime(timestr, 128, 0, &t) != 0) {
+		(void) printf(dgettext(TEXT_DOMAIN,
+		    "\tReturning the pool to its state as of %s\n"
+		    "\tshould correct the problem.  "),
+		    timestr);
+	} else {
+		(void) printf(dgettext(TEXT_DOMAIN,
+		    "\tReverting the pool to an earlier state "
+		    "should correct the problem.\n\t"));
+	}
+
+	if (loss > 120) {
+		(void) printf(dgettext(TEXT_DOMAIN,
+		    "Approximately %lld minutes of data\n"
+		    "\tmust be discarded, irreversibly.  "), (loss + 30) / 60);
+	} else if (loss > 0) {
+		(void) printf(dgettext(TEXT_DOMAIN,
+		    "Approximately %lld seconds of data\n"
+		    "\tmust be discarded, irreversibly.  "), loss);
+	}
+	if (edata != 0 && edata != UINT64_MAX) {
+		if (edata == 1) {
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "After rewind, at least\n"
+			    "\tone persistent user-data error will remain.  "));
+		} else {
+			(void) printf(dgettext(TEXT_DOMAIN,
+			    "After rewind, several\n"
+			    "\tpersistent user-data errors will remain.  "));
+		}
+	}
+	(void) printf(dgettext(TEXT_DOMAIN,
+	    "Recovery can be attempted\n\tby executing 'zpool %s -F %s'.  "),
+	    reason >= 0 ? "clear" : "import", name);
+
+	(void) printf(dgettext(TEXT_DOMAIN,
+	    "A scrub of the pool\n"
+	    "\tis strongly recommended after recovery.\n"));
+	return;
+
+no_info:
+	(void) printf(dgettext(TEXT_DOMAIN,
+	    "Destroy and re-create the pool from\n\ta backup source.\n"));
+}
+
 /*
  * zpool_import() is a contracted interface. Should be kept the same
  * if possible.
@@ -1234,12 +1379,40 @@ zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 		}
 	}
 
-	ret = zpool_import_props(hdl, config, newname, props, B_FALSE);
+	ret = zpool_import_props(hdl, config, newname, props,
+	    ZFS_IMPORT_NORMAL);
 	if (props)
 		nvlist_free(props);
 	return (ret);
 }
 
+static void
+print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv,
+    int indent)
+{
+	nvlist_t **child;
+	uint_t c, children;
+	char *vname;
+	uint64_t is_log = 0;
+
+	(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG,
+	    &is_log);
+
+	if (name != NULL)
+		(void) printf("\t%*s%s%s\n", indent, "", name,
+		    is_log ? " [log]" : "");
+
+	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
+	    &child, &children) != 0)
+		return;
+
+	for (c = 0; c < children; c++) {
+		vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE);
+		print_vdev_tree(hdl, vname, child[c], indent + 2);
+		free(vname);
+	}
+}
+
 /*
  * Import the given pool using the known configuration and a list of
  * properties to be set. The configuration should have come from
@@ -1248,12 +1421,17 @@ zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
  */
 int
 zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
-    nvlist_t *props, boolean_t importfaulted)
+    nvlist_t *props, int flags)
 {
 	zfs_cmd_t zc = { 0 };
+	zpool_rewind_policy_t policy;
+	nvlist_t *nv = NULL;
+	nvlist_t *nvinfo = NULL;
+	nvlist_t *missing = NULL;
 	char *thename;
 	char *origname;
 	int ret;
+	int error = 0;
 	char errbuf[1024];
 
 	verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
@@ -1274,12 +1452,13 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 
 	if (props) {
 		uint64_t version;
+		prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
 
 		verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
 		    &version) == 0);
 
 		if ((props = zpool_valid_proplist(hdl, origname,
-		    props, version, B_TRUE, errbuf)) == NULL) {
+		    props, version, flags, errbuf)) == NULL) {
 			return (-1);
 		} else if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
 			nvlist_free(props);
@@ -1296,11 +1475,39 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 		nvlist_free(props);
 		return (-1);
 	}
+	if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) {
+		nvlist_free(props);
+		return (-1);
+	}
 
-	zc.zc_cookie = (uint64_t)importfaulted;
-	ret = 0;
-	if (zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc) != 0) {
+	zc.zc_cookie = flags;
+	while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 &&
+	    errno == ENOMEM) {
+		if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
+			zcmd_free_nvlists(&zc);
+			return (-1);
+		}
+	}
+	if (ret != 0)
+		error = errno;
+
+	(void) zcmd_read_dst_nvlist(hdl, &zc, &nv);
+	zpool_get_rewind_policy(config, &policy);
+
+	if (error) {
 		char desc[1024];
+
+		/*
+		 * Dry-run failed, but we print out what success
+		 * looks like if we found a best txg
+		 */
+		if (policy.zrp_request & ZPOOL_TRY_REWIND) {
+			zpool_rewind_exclaim(hdl, newname ? origname : thename,
+			    B_TRUE, nv);
+			nvlist_free(nv);
+			return (-1);
+		}
+
 		if (newname == NULL)
 			(void) snprintf(desc, sizeof (desc),
 			    dgettext(TEXT_DOMAIN, "cannot import '%s'"),
@@ -1310,7 +1517,7 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 			    dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"),
 			    origname, thename);
 
-		switch (errno) {
+		switch (error) {
 		case ENOTSUP:
 			/*
 			 * Unsupported version.
@@ -1322,10 +1529,38 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 			(void) zfs_error(hdl, EZFS_INVALCONFIG, desc);
 			break;
 
+		case EROFS:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "one or more devices is read only"));
+			(void) zfs_error(hdl, EZFS_BADDEV, desc);
+			break;
+
+		case ENXIO:
+			if (nv && nvlist_lookup_nvlist(nv,
+			    ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
+			    nvlist_lookup_nvlist(nvinfo,
+			    ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) {
+				(void) printf(dgettext(TEXT_DOMAIN,
+				    "The devices below are missing, use "
+				    "'-m' to import the pool anyway:\n"));
+				print_vdev_tree(hdl, NULL, missing, 2);
+				(void) printf("\n");
+			}
+			(void) zpool_standard_error(hdl, error, desc);
+			break;
+
+		case EEXIST:
+			(void) zpool_standard_error(hdl, error, desc);
+			break;
+
 		default:
-			(void) zpool_standard_error(hdl, errno, desc);
+			(void) zpool_standard_error(hdl, error, desc);
+			zpool_explain_recover(hdl,
+			    newname ? origname : thename, -error, nv);
+			break;
 		}
 
+		nvlist_free(nv);
 		ret = -1;
 	} else {
 		zpool_handle_t *zhp;
@@ -1333,13 +1568,17 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 		/*
 		 * This should never fail, but play it safe anyway.
 		 */
-		if (zpool_open_silent(hdl, thename, &zhp) != 0) {
+		if (zpool_open_silent(hdl, thename, &zhp) != 0)
 			ret = -1;
-		} else if (zhp != NULL) {
-			ret = zpool_create_zvol_links(zhp);
+		else if (zhp != NULL)
 			zpool_close(zhp);
+		if (policy.zrp_request &
+		    (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
+			zpool_rewind_exclaim(hdl, newname ? origname : thename,
+			    ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv);
 		}
-
+		nvlist_free(nv);
+		return (0);
 	}
 
 	zcmd_free_nvlists(&zc);
@@ -1349,71 +1588,235 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
 }
 
 /*
- * Scrub the pool.
+ * Scan the pool.
  */
 int
-zpool_scrub(zpool_handle_t *zhp, pool_scrub_type_t type)
+zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func)
 {
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
 
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
-	zc.zc_cookie = type;
+	zc.zc_cookie = func;
 
-	if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SCRUB, &zc) == 0)
+	if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 ||
+	    (errno == ENOENT && func != POOL_SCAN_NONE))
 		return (0);
 
-	(void) snprintf(msg, sizeof (msg),
-	    dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name);
+	if (func == POOL_SCAN_SCRUB) {
+		(void) snprintf(msg, sizeof (msg),
+		    dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name);
+	} else if (func == POOL_SCAN_NONE) {
+		(void) snprintf(msg, sizeof (msg),
+		    dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"),
+		    zc.zc_name);
+	} else {
+		assert(!"unexpected result");
+	}
 
-	if (errno == EBUSY)
-		return (zfs_error(hdl, EZFS_RESILVERING, msg));
-	else
+	if (errno == EBUSY) {
+		nvlist_t *nvroot;
+		pool_scan_stat_t *ps = NULL;
+		uint_t psc;
+
+		verify(nvlist_lookup_nvlist(zhp->zpool_config,
+		    ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
+		(void) nvlist_lookup_uint64_array(nvroot,
+		    ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc);
+		if (ps && ps->pss_func == POOL_SCAN_SCRUB)
+			return (zfs_error(hdl, EZFS_SCRUBBING, msg));
+		else
+			return (zfs_error(hdl, EZFS_RESILVERING, msg));
+	} else if (errno == ENOENT) {
+		return (zfs_error(hdl, EZFS_NO_SCRUB, msg));
+	} else {
 		return (zpool_standard_error(hdl, errno, msg));
+	}
+}
+
+/*
+ * This provides a very minimal check whether a given string is likely a
+ * c#t#d# style string.  Users of this are expected to do their own
+ * verification of the s# part.
+ */
+#define	CTD_CHECK(str)  (str && str[0] == 'c' && isdigit(str[1]))
+
+/*
+ * More elaborate version for ones which may start with "/dev/dsk/"
+ * and the like.
+ */
+static int
+ctd_check_path(char *str) {
+	/*
+	 * If it starts with a slash, check the last component.
+	 */
+	if (str && str[0] == '/') {
+		char *tmp = strrchr(str, '/');
+
+		/*
+		 * If it ends in "/old", check the second-to-last
+		 * component of the string instead.
+		 */
+		if (tmp != str && strcmp(tmp, "/old") == 0) {
+			for (tmp--; *tmp != '/'; tmp--)
+				;
+		}
+		str = tmp + 1;
+	}
+	return (CTD_CHECK(str));
 }
 
 /*
+ * Find a vdev that matches the search criteria specified. We use the
+ * the nvpair name to determine how we should look for the device.
  * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL
  * spare; but FALSE if its an INUSE spare.
  */
 static nvlist_t *
-vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
-    boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
+vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
+    boolean_t *l2cache, boolean_t *log)
 {
 	uint_t c, children;
 	nvlist_t **child;
-	uint64_t theguid, present;
-	char *path;
-	uint64_t wholedisk = 0;
 	nvlist_t *ret;
 	uint64_t is_log;
+	char *srchkey;
+	nvpair_t *pair = nvlist_next_nvpair(search, NULL);
 
-	verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &theguid) == 0);
+	/* Nothing to look for */
+	if (search == NULL || pair == NULL)
+		return (NULL);
+
+	/* Obtain the key we will use to search */
+	srchkey = nvpair_name(pair);
+
+	switch (nvpair_type(pair)) {
+	case DATA_TYPE_UINT64:
+		if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) {
+			uint64_t srchval, theguid;
+
+			verify(nvpair_value_uint64(pair, &srchval) == 0);
+			verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
+			    &theguid) == 0);
+			if (theguid == srchval)
+				return (nv);
+		}
+		break;
+
+	case DATA_TYPE_STRING: {
+		char *srchval, *val;
+
+		verify(nvpair_value_string(pair, &srchval) == 0);
+		if (nvlist_lookup_string(nv, srchkey, &val) != 0)
+			break;
 
-	if (search == NULL &&
-	    nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &present) == 0) {
 		/*
-		 * If the device has never been present since import, the only
-		 * reliable way to match the vdev is by GUID.
+		 * Search for the requested value. Special cases:
+		 *
+		 * - ZPOOL_CONFIG_PATH for whole disk entries.  These end in
+		 *   "s0" or "s0/old".  The "s0" part is hidden from the user,
+		 *   but included in the string, so this matches around it.
+		 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE).
+		 *
+		 * Otherwise, all other searches are simple string compares.
 		 */
-		if (theguid == guid)
-			return (nv);
-	} else if (search != NULL &&
-	    nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) {
-		(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
-		    &wholedisk);
-		if (wholedisk) {
+		if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 &&
+		    ctd_check_path(val)) {
+			uint64_t wholedisk = 0;
+
+			(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
+			    &wholedisk);
+			if (wholedisk) {
+				int slen = strlen(srchval);
+				int vlen = strlen(val);
+
+				if (slen != vlen - 2)
+					break;
+
+				/*
+				 * make_leaf_vdev() should only set
+				 * wholedisk for ZPOOL_CONFIG_PATHs which
+				 * will include "/dev/dsk/", giving plenty of
+				 * room for the indices used next.
+				 */
+				ASSERT(vlen >= 6);
+
+				/*
+				 * strings identical except trailing "s0"
+				 */
+				if (strcmp(&val[vlen - 2], "s0") == 0 &&
+				    strncmp(srchval, val, slen) == 0)
+					return (nv);
+
+				/*
+				 * strings identical except trailing "s0/old"
+				 */
+				if (strcmp(&val[vlen - 6], "s0/old") == 0 &&
+				    strcmp(&srchval[slen - 4], "/old") == 0 &&
+				    strncmp(srchval, val, slen - 4) == 0)
+					return (nv);
+
+				break;
+			}
+		} else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) {
+			char *type, *idx, *end, *p;
+			uint64_t id, vdev_id;
+
+			/*
+			 * Determine our vdev type, keeping in mind
+			 * that the srchval is composed of a type and
+			 * vdev id pair (i.e. mirror-4).
+			 */
+			if ((type = strdup(srchval)) == NULL)
+				return (NULL);
+
+			if ((p = strrchr(type, '-')) == NULL) {
+				free(type);
+				break;
+			}
+			idx = p + 1;
+			*p = '\0';
+
+			/*
+			 * If the types don't match then keep looking.
+			 */
+			if (strncmp(val, type, strlen(val)) != 0) {
+				free(type);
+				break;
+			}
+
+			verify(strncmp(type, VDEV_TYPE_RAIDZ,
+			    strlen(VDEV_TYPE_RAIDZ)) == 0 ||
+			    strncmp(type, VDEV_TYPE_MIRROR,
+			    strlen(VDEV_TYPE_MIRROR)) == 0);
+			verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
+			    &id) == 0);
+
+			errno = 0;
+			vdev_id = strtoull(idx, &end, 10);
+
+			free(type);
+			if (errno != 0)
+				return (NULL);
+
 			/*
-			 * For whole disks, the internal path has 's0', but the
-			 * path passed in by the user doesn't.
+			 * Now verify that we have the correct vdev id.
 			 */
-			if (strlen(search) == strlen(path) - 2 &&
-			    strncmp(search, path, strlen(search)) == 0)
+			if (vdev_id == id)
 				return (nv);
-		} else if (strcmp(search, path) == 0) {
-			return (nv);
 		}
+
+		/*
+		 * Common case
+		 */
+		if (strcmp(srchval, val) == 0)
+			return (nv);
+		break;
+	}
+
+	default:
+		break;
 	}
 
 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
@@ -1421,7 +1824,7 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 		return (NULL);
 
 	for (c = 0; c < children; c++) {
-		if ((ret = vdev_to_nvlist_iter(child[c], search, guid,
+		if ((ret = vdev_to_nvlist_iter(child[c], search,
 		    avail_spare, l2cache, NULL)) != NULL) {
 			/*
 			 * The 'is_log' value is only set for the toplevel
@@ -1442,7 +1845,7 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
 	    &child, &children) == 0) {
 		for (c = 0; c < children; c++) {
-			if ((ret = vdev_to_nvlist_iter(child[c], search, guid,
+			if ((ret = vdev_to_nvlist_iter(child[c], search,
 			    avail_spare, l2cache, NULL)) != NULL) {
 				*avail_spare = B_TRUE;
 				return (ret);
@@ -1453,7 +1856,7 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
 	    &child, &children) == 0) {
 		for (c = 0; c < children; c++) {
-			if ((ret = vdev_to_nvlist_iter(child[c], search, guid,
+			if ((ret = vdev_to_nvlist_iter(child[c], search,
 			    avail_spare, l2cache, NULL)) != NULL) {
 				*l2cache = B_TRUE;
 				return (ret);
@@ -1464,24 +1867,65 @@ vdev_to_nvlist_iter(nvlist_t *nv, const char *search, uint64_t guid,
 	return (NULL);
 }
 
+/*
+ * Given a physical path (minus the "/devices" prefix), find the
+ * associated vdev.
+ */
+nvlist_t *
+zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath,
+    boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
+{
+	nvlist_t *search, *nvroot, *ret;
+
+	verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+	verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0);
+
+	verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
+	    &nvroot) == 0);
+
+	*avail_spare = B_FALSE;
+	*l2cache = B_FALSE;
+	if (log != NULL)
+		*log = B_FALSE;
+	ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
+	nvlist_free(search);
+
+	return (ret);
+}
+
+/*
+ * Determine if we have an "interior" top-level vdev (i.e mirror/raidz).
+ */
+boolean_t
+zpool_vdev_is_interior(const char *name)
+{
+	if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 ||
+	    strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0)
+		return (B_TRUE);
+	return (B_FALSE);
+}
+
 nvlist_t *
 zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
     boolean_t *l2cache, boolean_t *log)
 {
 	char buf[MAXPATHLEN];
-	const char *search;
 	char *end;
-	nvlist_t *nvroot;
+	nvlist_t *nvroot, *search, *ret;
 	uint64_t guid;
 
+	verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
 	guid = strtoull(path, &end, 10);
 	if (guid != 0 && *end == '\0') {
-		search = NULL;
+		verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0);
+	} else if (zpool_vdev_is_interior(path)) {
+		verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0);
 	} else if (path[0] != '/') {
 		(void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path);
-		search = buf;
+		verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0);
 	} else {
-		search = path;
+		verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0);
 	}
 
 	verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
@@ -1491,8 +1935,10 @@ zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
 	*l2cache = B_FALSE;
 	if (log != NULL)
 		*log = B_FALSE;
-	return (vdev_to_nvlist_iter(nvroot, search, guid, avail_spare,
-	    l2cache, log));
+	ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
+	nvlist_free(search);
+
+	return (ret);
 }
 
 static int
@@ -1509,106 +1955,180 @@ vdev_online(nvlist_t *nv)
 }
 
 /*
- * Get phys_path for a root pool
- * Return 0 on success; non-zeron on failure.
+ * Helper function for zpool_get_physpaths().
  */
-int
-zpool_get_physpath(zpool_handle_t *zhp, char *physpath)
+static int
+vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size,
+    size_t *bytes_written)
 {
+	size_t bytes_left, pos, rsz;
+	char *tmppath;
+	const char *format;
+
+	if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH,
+	    &tmppath) != 0)
+		return (EZFS_NODEVICE);
+
+	pos = *bytes_written;
+	bytes_left = physpath_size - pos;
+	format = (pos == 0) ? "%s" : " %s";
+
+	rsz = snprintf(physpath + pos, bytes_left, format, tmppath);
+	*bytes_written += rsz;
+
+	if (rsz >= bytes_left) {
+		/* if physpath was not copied properly, clear it */
+		if (bytes_left != 0) {
+			physpath[pos] = 0;
+		}
+		return (EZFS_NOSPC);
+	}
+	return (0);
+}
+
+static int
+vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size,
+    size_t *rsz, boolean_t is_spare)
+{
+	char *type;
+	int ret;
+
+	if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
+		return (EZFS_INVALCONFIG);
+
+	if (strcmp(type, VDEV_TYPE_DISK) == 0) {
+		/*
+		 * An active spare device has ZPOOL_CONFIG_IS_SPARE set.
+		 * For a spare vdev, we only want to boot from the active
+		 * spare device.
+		 */
+		if (is_spare) {
+			uint64_t spare = 0;
+			(void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
+			    &spare);
+			if (!spare)
+				return (EZFS_INVALCONFIG);
+		}
+
+		if (vdev_online(nv)) {
+			if ((ret = vdev_get_one_physpath(nv, physpath,
+			    phypath_size, rsz)) != 0)
+				return (ret);
+		}
+	} else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 ||
+	    strcmp(type, VDEV_TYPE_REPLACING) == 0 ||
+	    (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) {
+		nvlist_t **child;
+		uint_t count;
+		int i, ret;
+
+		if (nvlist_lookup_nvlist_array(nv,
+		    ZPOOL_CONFIG_CHILDREN, &child, &count) != 0)
+			return (EZFS_INVALCONFIG);
+
+		for (i = 0; i < count; i++) {
+			ret = vdev_get_physpaths(child[i], physpath,
+			    phypath_size, rsz, is_spare);
+			if (ret == EZFS_NOSPC)
+				return (ret);
+		}
+	}
+
+	return (EZFS_POOL_INVALARG);
+}
+
+/*
+ * Get phys_path for a root pool config.
+ * Return 0 on success; non-zero on failure.
+ */
+static int
+zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size)
+{
+	size_t rsz;
 	nvlist_t *vdev_root;
 	nvlist_t **child;
 	uint_t count;
-	int i;
+	char *type;
 
-	/*
-	 * Make sure this is a root pool, as phys_path doesn't mean
-	 * anything to a non-root pool.
-	 */
-	if (!pool_is_bootable(zhp))
-		return (-1);
+	rsz = 0;
 
-	verify(nvlist_lookup_nvlist(zhp->zpool_config,
-	    ZPOOL_CONFIG_VDEV_TREE, &vdev_root) == 0);
+	if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
+	    &vdev_root) != 0)
+		return (EZFS_INVALCONFIG);
 
-	if (nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
+	if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 ||
+	    nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
 	    &child, &count) != 0)
-		return (-2);
+		return (EZFS_INVALCONFIG);
 
-	for (i = 0; i < count; i++) {
-		nvlist_t **child2;
-		uint_t count2;
-		char *type;
-		char *tmppath;
-		int j;
+	/*
+	 * root pool can not have EFI labeled disks and can only have
+	 * a single top-level vdev.
+	 */
+	if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 ||
+	    pool_uses_efi(vdev_root))
+		return (EZFS_POOL_INVALARG);
 
-		if (nvlist_lookup_string(child[i], ZPOOL_CONFIG_TYPE, &type)
-		    != 0)
-			return (-3);
-
-		if (strcmp(type, VDEV_TYPE_DISK) == 0) {
-			if (!vdev_online(child[i]))
-				return (-8);
-			verify(nvlist_lookup_string(child[i],
-			    ZPOOL_CONFIG_PHYS_PATH, &tmppath) == 0);
-			(void) strncpy(physpath, tmppath, strlen(tmppath));
-		} else if (strcmp(type, VDEV_TYPE_MIRROR) == 0) {
-			if (nvlist_lookup_nvlist_array(child[i],
-			    ZPOOL_CONFIG_CHILDREN, &child2, &count2) != 0)
-				return (-4);
-
-			for (j = 0; j < count2; j++) {
-				if (!vdev_online(child2[j]))
-					return (-8);
-				if (nvlist_lookup_string(child2[j],
-				    ZPOOL_CONFIG_PHYS_PATH, &tmppath) != 0)
-					return (-5);
-
-				if ((strlen(physpath) + strlen(tmppath)) >
-				    MAXNAMELEN)
-					return (-6);
-
-				if (strlen(physpath) == 0) {
-					(void) strncpy(physpath, tmppath,
-					    strlen(tmppath));
-				} else {
-					(void) strcat(physpath, " ");
-					(void) strcat(physpath, tmppath);
-				}
-			}
-		} else {
-			return (-7);
-		}
-	}
+	(void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz,
+	    B_FALSE);
+
+	/* No online devices */
+	if (rsz == 0)
+		return (EZFS_NODEVICE);
 
 	return (0);
 }
 
 /*
- * Returns TRUE if the given guid corresponds to the given type.
- * This is used to check for hot spares (INUSE or not), and level 2 cache
- * devices.
+ * Get phys_path for a root pool
+ * Return 0 on success; non-zero on failure.
  */
-static boolean_t
-is_guid_type(zpool_handle_t *zhp, uint64_t guid, const char *type)
+int
+zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size)
 {
-	uint64_t target_guid;
-	nvlist_t *nvroot;
-	nvlist_t **list;
-	uint_t count;
-	int i;
+	return (zpool_get_config_physpath(zhp->zpool_config, physpath,
+	    phypath_size));
+}
 
-	verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
-	    &nvroot) == 0);
-	if (nvlist_lookup_nvlist_array(nvroot, type, &list, &count) == 0) {
-		for (i = 0; i < count; i++) {
-			verify(nvlist_lookup_uint64(list[i], ZPOOL_CONFIG_GUID,
-			    &target_guid) == 0);
-			if (guid == target_guid)
-				return (B_TRUE);
-		}
+/*
+ * If the device has being dynamically expanded then we need to relabel
+ * the disk to use the new unallocated space.
+ */
+static int
+zpool_relabel_disk(libzfs_handle_t *hdl, const char *name)
+{
+#ifdef sun
+	char path[MAXPATHLEN];
+	char errbuf[1024];
+	int fd, error;
+	int (*_efi_use_whole_disk)(int);
+
+	if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT,
+	    "efi_use_whole_disk")) == NULL)
+		return (-1);
+
+	(void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name);
+
+	if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
+		    "relabel '%s': unable to open device"), name);
+		return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
 	}
 
-	return (B_FALSE);
+	/*
+	 * It's possible that we might encounter an error if the device
+	 * does not have any unallocated space left. If so, we simply
+	 * ignore that error and continue on.
+	 */
+	error = _efi_use_whole_disk(fd);
+	(void) close(fd);
+	if (error && error != VT_ENOSPC) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
+		    "relabel '%s': unable to read disk capacity"), name);
+		return (zfs_error(hdl, EZFS_NOCAP, errbuf));
+	}
+#endif	/* sun */
+	return (0);
 }
 
 /*
@@ -1622,28 +2142,64 @@ zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
 	nvlist_t *tgt;
-	boolean_t avail_spare, l2cache;
+	boolean_t avail_spare, l2cache, islog;
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
 
-	(void) snprintf(msg, sizeof (msg),
-	    dgettext(TEXT_DOMAIN, "cannot online %s"), path);
+	if (flags & ZFS_ONLINE_EXPAND) {
+		(void) snprintf(msg, sizeof (msg),
+		    dgettext(TEXT_DOMAIN, "cannot expand %s"), path);
+	} else {
+		(void) snprintf(msg, sizeof (msg),
+		    dgettext(TEXT_DOMAIN, "cannot online %s"), path);
+	}
 
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 	if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
-	    NULL)) == NULL)
+	    &islog)) == NULL)
 		return (zfs_error(hdl, EZFS_NODEVICE, msg));
 
 	verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
 
-	if (avail_spare ||
-	    is_guid_type(zhp, zc.zc_guid, ZPOOL_CONFIG_SPARES) == B_TRUE)
+	if (avail_spare)
 		return (zfs_error(hdl, EZFS_ISSPARE, msg));
 
+	if (flags & ZFS_ONLINE_EXPAND ||
+	    zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) {
+		char *pathname = NULL;
+		uint64_t wholedisk = 0;
+
+		(void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK,
+		    &wholedisk);
+		verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH,
+		    &pathname) == 0);
+
+		/*
+		 * XXX - L2ARC 1.0 devices can't support expansion.
+		 */
+		if (l2cache) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "cannot expand cache devices"));
+			return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg));
+		}
+
+		if (wholedisk) {
+			pathname += strlen(DISK_ROOT) + 1;
+			(void) zpool_relabel_disk(hdl, pathname);
+		}
+	}
+
 	zc.zc_cookie = VDEV_STATE_ONLINE;
 	zc.zc_obj = flags;
 
-	if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0)
+	if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) {
+		if (errno == EINVAL) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split "
+			    "from this pool into a new one.  Use '%s' "
+			    "instead"), "zpool detach");
+			return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg));
+		}
 		return (zpool_standard_error(hdl, errno, msg));
+	}
 
 	*newstate = zc.zc_cookie;
 	return (0);
@@ -1671,14 +2227,13 @@ zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
 
 	verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
 
-	if (avail_spare ||
-	    is_guid_type(zhp, zc.zc_guid, ZPOOL_CONFIG_SPARES) == B_TRUE)
+	if (avail_spare)
 		return (zfs_error(hdl, EZFS_ISSPARE, msg));
 
 	zc.zc_cookie = VDEV_STATE_OFFLINE;
 	zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0;
 
-	if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
+	if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
 		return (0);
 
 	switch (errno) {
@@ -1689,6 +2244,12 @@ zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
 		 */
 		return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
 
+	case EEXIST:
+		/*
+		 * The log device has unplayed logs
+		 */
+		return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
+
 	default:
 		return (zpool_standard_error(hdl, errno, msg));
 	}
@@ -1698,7 +2259,7 @@ zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
  * Mark the given vdev faulted.
  */
 int
-zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid)
+zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
 {
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
@@ -1710,8 +2271,9 @@ zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid)
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 	zc.zc_guid = guid;
 	zc.zc_cookie = VDEV_STATE_FAULTED;
+	zc.zc_obj = aux;
 
-	if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
+	if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
 		return (0);
 
 	switch (errno) {
@@ -1722,12 +2284,6 @@ zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid)
 		 */
 		return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
 
-	case EEXIST:
-		/*
-		 * The log device has unplayed logs
-		 */
-		return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
-
 	default:
 		return (zpool_standard_error(hdl, errno, msg));
 	}
@@ -1738,7 +2294,7 @@ zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid)
  * Mark the given vdev degraded.
  */
 int
-zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid)
+zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
 {
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
@@ -1750,8 +2306,9 @@ zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid)
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 	zc.zc_guid = guid;
 	zc.zc_cookie = VDEV_STATE_DEGRADED;
+	zc.zc_obj = aux;
 
-	if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
+	if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
 		return (0);
 
 	return (zpool_standard_error(hdl, errno, msg));
@@ -1799,7 +2356,7 @@ zpool_vdev_attach(zpool_handle_t *zhp,
 	nvlist_t *tgt;
 	boolean_t avail_spare, l2cache, islog;
 	uint64_t val;
-	char *path, *newname;
+	char *newname;
 	nvlist_t **child;
 	uint_t children;
 	nvlist_t *config_root;
@@ -1847,7 +2404,7 @@ zpool_vdev_attach(zpool_handle_t *zhp,
 	verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
 	    ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0);
 
-	if ((newname = zpool_vdev_name(NULL, NULL, child[0])) == NULL)
+	if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL)
 		return (-1);
 
 	/*
@@ -1865,32 +2422,25 @@ zpool_vdev_attach(zpool_handle_t *zhp,
 		return (zfs_error(hdl, EZFS_BADTARGET, msg));
 	}
 
-	/*
-	 * If we are attempting to replace a spare, it canot be applied to an
-	 * already spared device.
-	 */
-	if (replacing &&
-	    nvlist_lookup_string(child[0], ZPOOL_CONFIG_PATH, &path) == 0 &&
-	    zpool_find_vdev(zhp, newname, &avail_spare,
-	    &l2cache, NULL) != NULL && avail_spare &&
-	    is_replacing_spare(config_root, tgt, 0)) {
-		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-		    "device has already been replaced with a spare"));
-		free(newname);
-		return (zfs_error(hdl, EZFS_BADTARGET, msg));
-	}
-
 	free(newname);
 
 	if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
 		return (-1);
 
-	ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_ATTACH, &zc);
+	ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc);
 
 	zcmd_free_nvlists(&zc);
 
 	if (ret == 0) {
 		if (rootpool) {
+			/*
+			 * XXX need a better way to prevent user from
+			 * booting up a half-baked vdev.
+			 */
+			(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make "
+			    "sure to wait until resilver is done "
+			    "before rebooting.\n"));
+			(void) fprintf(stderr, "\n");
 			(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If "
 			    "you boot from pool '%s', you may need to update\n"
 			    "boot code on newly attached disk '%s'.\n\n"
@@ -1910,9 +2460,16 @@ zpool_vdev_attach(zpool_handle_t *zhp,
 		 * Can't attach to or replace this type of vdev.
 		 */
 		if (replacing) {
+			uint64_t version = zpool_get_prop_int(zhp,
+			    ZPOOL_PROP_VERSION, NULL);
+
 			if (islog)
 				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 				    "cannot replace a log with a spare"));
+			else if (version >= SPA_VERSION_MULTI_REPLACE)
+				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+				    "already in replacing/spare config; wait "
+				    "for completion or use 'zpool detach'"));
 			else
 				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 				    "cannot replace a replacing device"));
@@ -2010,7 +2567,7 @@ zpool_vdev_detach(zpool_handle_t *zhp, const char *path)
 		 */
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only "
 		    "applicable to mirror and replacing vdevs"));
-		(void) zfs_error(zhp->zpool_hdl, EZFS_BADTARGET, msg);
+		(void) zfs_error(hdl, EZFS_BADTARGET, msg);
 		break;
 
 	case EBUSY:
@@ -2028,6 +2585,258 @@ zpool_vdev_detach(zpool_handle_t *zhp, const char *path)
 }
 
 /*
+ * Find a mirror vdev in the source nvlist.
+ *
+ * The mchild array contains a list of disks in one of the top-level mirrors
+ * of the source pool.  The schild array contains a list of disks that the
+ * user specified on the command line.  We loop over the mchild array to
+ * see if any entry in the schild array matches.
+ *
+ * If a disk in the mchild array is found in the schild array, we return
+ * the index of that entry.  Otherwise we return -1.
+ */
+static int
+find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren,
+    nvlist_t **schild, uint_t schildren)
+{
+	uint_t mc;
+
+	for (mc = 0; mc < mchildren; mc++) {
+		uint_t sc;
+		char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp,
+		    mchild[mc], B_FALSE);
+
+		for (sc = 0; sc < schildren; sc++) {
+			char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp,
+			    schild[sc], B_FALSE);
+			boolean_t result = (strcmp(mpath, spath) == 0);
+
+			free(spath);
+			if (result) {
+				free(mpath);
+				return (mc);
+			}
+		}
+
+		free(mpath);
+	}
+
+	return (-1);
+}
+
+/*
+ * Split a mirror pool.  If newroot points to null, then a new nvlist
+ * is generated and it is the responsibility of the caller to free it.
+ */
+int
+zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot,
+    nvlist_t *props, splitflags_t flags)
+{
+	zfs_cmd_t zc = { 0 };
+	char msg[1024];
+	nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL;
+	nvlist_t **varray = NULL, *zc_props = NULL;
+	uint_t c, children, newchildren, lastlog = 0, vcount, found = 0;
+	libzfs_handle_t *hdl = zhp->zpool_hdl;
+	uint64_t vers;
+	boolean_t freelist = B_FALSE, memory_err = B_TRUE;
+	int retval = 0;
+
+	(void) snprintf(msg, sizeof (msg),
+	    dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name);
+
+	if (!zpool_name_valid(hdl, B_FALSE, newname))
+		return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
+
+	if ((config = zpool_get_config(zhp, NULL)) == NULL) {
+		(void) fprintf(stderr, gettext("Internal error: unable to "
+		    "retrieve pool configuration\n"));
+		return (-1);
+	}
+
+	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree)
+	    == 0);
+	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0);
+
+	if (props) {
+		prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
+		if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name,
+		    props, vers, flags, msg)) == NULL)
+			return (-1);
+	}
+
+	if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
+	    &children) != 0) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+		    "Source pool is missing vdev tree"));
+		if (zc_props)
+			nvlist_free(zc_props);
+		return (-1);
+	}
+
+	varray = zfs_alloc(hdl, children * sizeof (nvlist_t *));
+	vcount = 0;
+
+	if (*newroot == NULL ||
+	    nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN,
+	    &newchild, &newchildren) != 0)
+		newchildren = 0;
+
+	for (c = 0; c < children; c++) {
+		uint64_t is_log = B_FALSE, is_hole = B_FALSE;
+		char *type;
+		nvlist_t **mchild, *vdev;
+		uint_t mchildren;
+		int entry;
+
+		/*
+		 * Unlike cache & spares, slogs are stored in the
+		 * ZPOOL_CONFIG_CHILDREN array.  We filter them out here.
+		 */
+		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
+		    &is_log);
+		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
+		    &is_hole);
+		if (is_log || is_hole) {
+			/*
+			 * Create a hole vdev and put it in the config.
+			 */
+			if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0)
+				goto out;
+			if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE,
+			    VDEV_TYPE_HOLE) != 0)
+				goto out;
+			if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE,
+			    1) != 0)
+				goto out;
+			if (lastlog == 0)
+				lastlog = vcount;
+			varray[vcount++] = vdev;
+			continue;
+		}
+		lastlog = 0;
+		verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type)
+		    == 0);
+		if (strcmp(type, VDEV_TYPE_MIRROR) != 0) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "Source pool must be composed only of mirrors\n"));
+			retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
+			goto out;
+		}
+
+		verify(nvlist_lookup_nvlist_array(child[c],
+		    ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
+
+		/* find or add an entry for this top-level vdev */
+		if (newchildren > 0 &&
+		    (entry = find_vdev_entry(zhp, mchild, mchildren,
+		    newchild, newchildren)) >= 0) {
+			/* We found a disk that the user specified. */
+			vdev = mchild[entry];
+			++found;
+		} else {
+			/* User didn't specify a disk for this vdev. */
+			vdev = mchild[mchildren - 1];
+		}
+
+		if (nvlist_dup(vdev, &varray[vcount++], 0) != 0)
+			goto out;
+	}
+
+	/* did we find every disk the user specified? */
+	if (found != newchildren) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must "
+		    "include at most one disk from each mirror"));
+		retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
+		goto out;
+	}
+
+	/* Prepare the nvlist for populating. */
+	if (*newroot == NULL) {
+		if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0)
+			goto out;
+		freelist = B_TRUE;
+		if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE,
+		    VDEV_TYPE_ROOT) != 0)
+			goto out;
+	} else {
+		verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0);
+	}
+
+	/* Add all the children we found */
+	if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray,
+	    lastlog == 0 ? vcount : lastlog) != 0)
+		goto out;
+
+	/*
+	 * If we're just doing a dry run, exit now with success.
+	 */
+	if (flags.dryrun) {
+		memory_err = B_FALSE;
+		freelist = B_FALSE;
+		goto out;
+	}
+
+	/* now build up the config list & call the ioctl */
+	if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0)
+		goto out;
+
+	if (nvlist_add_nvlist(newconfig,
+	    ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 ||
+	    nvlist_add_string(newconfig,
+	    ZPOOL_CONFIG_POOL_NAME, newname) != 0 ||
+	    nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0)
+		goto out;
+
+	/*
+	 * The new pool is automatically part of the namespace unless we
+	 * explicitly export it.
+	 */
+	if (!flags.import)
+		zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT;
+	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
+	(void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string));
+	if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0)
+		goto out;
+	if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
+		goto out;
+
+	if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) {
+		retval = zpool_standard_error(hdl, errno, msg);
+		goto out;
+	}
+
+	freelist = B_FALSE;
+	memory_err = B_FALSE;
+
+out:
+	if (varray != NULL) {
+		int v;
+
+		for (v = 0; v < vcount; v++)
+			nvlist_free(varray[v]);
+		free(varray);
+	}
+	zcmd_free_nvlists(&zc);
+	if (zc_props)
+		nvlist_free(zc_props);
+	if (newconfig)
+		nvlist_free(newconfig);
+	if (freelist) {
+		nvlist_free(*newroot);
+		*newroot = NULL;
+	}
+
+	if (retval != 0)
+		return (retval);
+
+	if (memory_err)
+		return (no_memory(hdl));
+
+	return (0);
+}
+
+/*
  * Remove the given device.  Currently, this is supported only for hot spares
  * and level 2 cache devices.
  */
@@ -2037,24 +2846,34 @@ zpool_vdev_remove(zpool_handle_t *zhp, const char *path)
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
 	nvlist_t *tgt;
-	boolean_t avail_spare, l2cache;
+	boolean_t avail_spare, l2cache, islog;
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
+	uint64_t version;
 
 	(void) snprintf(msg, sizeof (msg),
 	    dgettext(TEXT_DOMAIN, "cannot remove %s"), path);
 
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 	if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
-	    NULL)) == 0)
+	    &islog)) == 0)
 		return (zfs_error(hdl, EZFS_NODEVICE, msg));
-
-	if (!avail_spare && !l2cache) {
+	/*
+	 * XXX - this should just go away.
+	 */
+	if (!avail_spare && !l2cache && !islog) {
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-		    "only inactive hot spares or cache devices "
-		    "can be removed"));
+		    "only inactive hot spares, cache, top-level, "
+		    "or log devices can be removed"));
 		return (zfs_error(hdl, EZFS_NODEVICE, msg));
 	}
 
+	version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
+	if (islog && version < SPA_VERSION_HOLES) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+		    "pool must be upgrade to support log removal"));
+		return (zfs_error(hdl, EZFS_BADVERSION, msg));
+	}
+
 	verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
 
 	if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0)
@@ -2067,13 +2886,16 @@ zpool_vdev_remove(zpool_handle_t *zhp, const char *path)
  * Clear the errors for the pool, or the particular device if specified.
  */
 int
-zpool_clear(zpool_handle_t *zhp, const char *path)
+zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl)
 {
 	zfs_cmd_t zc = { 0 };
 	char msg[1024];
 	nvlist_t *tgt;
+	zpool_rewind_policy_t policy;
 	boolean_t avail_spare, l2cache;
 	libzfs_handle_t *hdl = zhp->zpool_hdl;
+	nvlist_t *nvi = NULL;
+	int error;
 
 	if (path)
 		(void) snprintf(msg, sizeof (msg),
@@ -2101,9 +2923,38 @@ zpool_clear(zpool_handle_t *zhp, const char *path)
 		    &zc.zc_guid) == 0);
 	}
 
-	if (zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc) == 0)
+	zpool_get_rewind_policy(rewindnvl, &policy);
+	zc.zc_cookie = policy.zrp_request;
+
+	if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0)
+		return (-1);
+
+	if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0)
+		return (-1);
+
+	while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 &&
+	    errno == ENOMEM) {
+		if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
+			zcmd_free_nvlists(&zc);
+			return (-1);
+		}
+	}
+
+	if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) &&
+	    errno != EPERM && errno != EACCES)) {
+		if (policy.zrp_request &
+		    (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
+			(void) zcmd_read_dst_nvlist(hdl, &zc, &nvi);
+			zpool_rewind_exclaim(hdl, zc.zc_name,
+			    ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0),
+			    nvi);
+			nvlist_free(nvi);
+		}
+		zcmd_free_nvlists(&zc);
 		return (0);
+	}
 
+	zcmd_free_nvlists(&zc);
 	return (zpool_standard_error(hdl, errno, msg));
 }
 
@@ -2123,6 +2974,7 @@ zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid)
 
 	(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
 	zc.zc_guid = guid;
+	zc.zc_cookie = ZPOOL_NO_REWIND;
 
 	if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0)
 		return (0);
@@ -2131,173 +2983,6 @@ zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid)
 }
 
 /*
- * Iterate over all zvols in a given pool by walking the /dev/zvol/dsk/<pool>
- * hierarchy.
- */
-int
-zpool_iter_zvol(zpool_handle_t *zhp, int (*cb)(const char *, void *),
-    void *data)
-{
-	libzfs_handle_t *hdl = zhp->zpool_hdl;
-	char (*paths)[MAXPATHLEN];
-	char path[MAXPATHLEN];
-	size_t size = 4;
-	int curr, fd, base, ret = 0;
-	DIR *dirp;
-	struct dirent *dp;
-	struct stat st;
-
-	if ((base = open(ZVOL_FULL_DEV_DIR, O_RDONLY)) < 0)
-		return (errno == ENOENT ? 0 : -1);
-
-	snprintf(path, sizeof(path), "%s/%s", ZVOL_FULL_DEV_DIR,
-	    zhp->zpool_name);
-	if (stat(path, &st) != 0) {
-		int err = errno;
-		(void) close(base);
-		return (err == ENOENT ? 0 : -1);
-	}
-
-	/*
-	 * Oddly this wasn't a directory -- ignore that failure since we
-	 * know there are no links lower in the (non-existant) hierarchy.
-	 */
-	if (!S_ISDIR(st.st_mode)) {
-		(void) close(base);
-		return (0);
-	}
-
-	if ((paths = zfs_alloc(hdl, size * sizeof (paths[0]))) == NULL) {
-		(void) close(base);
-		return (-1);
-	}
-
-	(void) strlcpy(paths[0], zhp->zpool_name, sizeof (paths[0]));
-	curr = 0;
-
-	while (curr >= 0) {
-		snprintf(path, sizeof(path), "%s/%s", ZVOL_FULL_DEV_DIR,
-		    paths[curr]);
-		if (lstat(path, &st) != 0)
-			goto err;
-
-		if (S_ISDIR(st.st_mode)) {
-			if ((dirp = opendir(path)) == NULL) {
-				goto err;
-			}
-
-			while ((dp = readdir(dirp)) != NULL) {
-				if (dp->d_name[0] == '.')
-					continue;
-
-				if (curr + 1 == size) {
-					paths = zfs_realloc(hdl, paths,
-					    size * sizeof (paths[0]),
-					    size * 2 * sizeof (paths[0]));
-					if (paths == NULL) {
-						(void) closedir(dirp);
-						goto err;
-					}
-
-					size *= 2;
-				}
-
-				(void) strlcpy(paths[curr + 1], paths[curr],
-				    sizeof (paths[curr + 1]));
-				(void) strlcat(paths[curr], "/",
-				    sizeof (paths[curr]));
-				(void) strlcat(paths[curr], dp->d_name,
-				    sizeof (paths[curr]));
-				curr++;
-			}
-
-			(void) closedir(dirp);
-
-		} else {
-			if ((ret = cb(paths[curr], data)) != 0)
-				break;
-		}
-
-		curr--;
-	}
-
-	free(paths);
-	(void) close(base);
-
-	return (ret);
-
-err:
-	free(paths);
-	(void) close(base);
-	return (-1);
-}
-
-typedef struct zvol_cb {
-	zpool_handle_t *zcb_pool;
-	boolean_t zcb_create;
-} zvol_cb_t;
-
-/*ARGSUSED*/
-static int
-do_zvol_create(zfs_handle_t *zhp, void *data)
-{
-	int ret = 0;
-
-	if (ZFS_IS_VOLUME(zhp)) {
-		(void) zvol_create_link(zhp->zfs_hdl, zhp->zfs_name);
-		ret = zfs_iter_snapshots(zhp, do_zvol_create, NULL);
-	}
-
-	if (ret == 0)
-		ret = zfs_iter_filesystems(zhp, do_zvol_create, NULL);
-
-	zfs_close(zhp);
-
-	return (ret);
-}
-
-/*
- * Iterate over all zvols in the pool and make any necessary minor nodes.
- */
-int
-zpool_create_zvol_links(zpool_handle_t *zhp)
-{
-	zfs_handle_t *zfp;
-	int ret;
-
-	/*
-	 * If the pool is unavailable, just return success.
-	 */
-	if ((zfp = make_dataset_handle(zhp->zpool_hdl,
-	    zhp->zpool_name)) == NULL)
-		return (0);
-
-	ret = zfs_iter_filesystems(zfp, do_zvol_create, NULL);
-
-	zfs_close(zfp);
-	return (ret);
-}
-
-static int
-do_zvol_remove(const char *dataset, void *data)
-{
-	zpool_handle_t *zhp = data;
-
-	return (zvol_remove_link(zhp->zpool_hdl, dataset));
-}
-
-/*
- * Iterate over all zvols in the pool and remove any minor nodes.  We iterate
- * by examining the /dev links so that a corrupted pool doesn't impede this
- * operation.
- */
-int
-zpool_remove_zvol_links(zpool_handle_t *zhp)
-{
-	return (zpool_iter_zvol(zhp, do_zvol_remove, zhp));
-}
-
-/*
  * Convert from a devid string to a path.
  */
 static char *
@@ -2389,7 +3074,8 @@ set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path)
  * of these checks.
  */
 char *
-zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv)
+zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
+    boolean_t verbose)
 {
 	char *path, *devid;
 	uint64_t value;
@@ -2412,7 +3098,7 @@ zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv)
 		 * open a misbehaving device, which can have undesirable
 		 * effects.
 		 */
-		if ((nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_STATS,
+		if ((nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
 		    (uint64_t **)&vs, &vsc) != 0 ||
 		    vs->vs_state >= VDEV_STATE_DEGRADED) &&
 		    zhp != NULL &&
@@ -2444,17 +3130,35 @@ zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv)
 				devid_str_free(newdevid);
 		}
 
-		if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
-			path += sizeof(_PATH_DEV) - 1;
+#ifdef sun
+		if (strncmp(path, "/dev/dsk/", 9) == 0)
+			path += 9;
 
 		if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
 		    &value) == 0 && value) {
+			int pathlen = strlen(path);
 			char *tmp = zfs_strdup(hdl, path);
-			if (tmp == NULL)
-				return (NULL);
-			tmp[strlen(path) - 2] = '\0';
+
+			/*
+			 * If it starts with c#, and ends with "s0", chop
+			 * the "s0" off, or if it ends with "s0/old", remove
+			 * the "s0" from the middle.
+			 */
+			if (CTD_CHECK(tmp)) {
+				if (strcmp(&tmp[pathlen - 2], "s0") == 0) {
+					tmp[pathlen - 2] = '\0';
+				} else if (pathlen > 6 &&
+				    strcmp(&tmp[pathlen - 6], "s0/old") == 0) {
+					(void) strcpy(&tmp[pathlen - 6],
+					    "/old");
+				}
+			}
 			return (tmp);
 		}
+#else	/* !sun */
+		if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
+			path += sizeof(_PATH_DEV) - 1;
+#endif	/* !sun */
 	} else {
 		verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0);
 
@@ -2468,6 +3172,20 @@ zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv)
 			    (u_longlong_t)value);
 			path = buf;
 		}
+
+		/*
+		 * We identify each top-level vdev by using a <type-id>
+		 * naming convention.
+		 */
+		if (verbose) {
+			uint64_t id;
+
+			verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
+			    &id) == 0);
+			(void) snprintf(buf, sizeof (buf), "%s-%llu", path,
+			    (u_longlong_t)id);
+			path = buf;
+		}
 	}
 
 	return (zfs_strdup(hdl, path));
@@ -2686,7 +3404,7 @@ get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len)
  * into 'records'.  'leftover' is set to the number of bytes that weren't
  * processed as there wasn't a complete record.
  */
-static int
+int
 zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
     nvlist_t ***records, uint_t *numrecords)
 {
@@ -2815,15 +3533,7 @@ zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
 	free(mntpnt);
 }
 
-#define	RDISK_ROOT	"/dev/rdsk"
-#define	BACKUP_SLICE	"s2"
-/*
- * Don't start the slice at the default block of 34; many storage
- * devices will use a stripe width of 128k, so start there instead.
- */
-#define	NEW_START_BLOCK	256
-
-#if defined(sun)
+#ifdef sun
 /*
  * Read the EFI label from the config, if a label does not exist then
  * pass back the error to the caller. If the caller has passed a non-NULL
@@ -2897,7 +3607,7 @@ find_start_block(nvlist_t *config)
 int
 zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, char *name)
 {
-#if defined(sun)
+#ifdef sun
 	char path[MAXPATHLEN];
 	struct dk_gpt *vtoc;
 	int fd;
@@ -3017,6 +3727,7 @@ supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf)
 	if (strcmp(type, VDEV_TYPE_RAIDZ) == 0 ||
 	    strcmp(type, VDEV_TYPE_FILE) == 0 ||
 	    strcmp(type, VDEV_TYPE_LOG) == 0 ||
+	    strcmp(type, VDEV_TYPE_HOLE) == 0 ||
 	    strcmp(type, VDEV_TYPE_MISSING) == 0) {
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 		    "vdev type '%s' is not supported"), type);
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
index cdde90a..9d3c984 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
@@ -20,8 +20,7 @@
  */
 
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #include <assert.h>
@@ -36,24 +35,396 @@
 #include <fcntl.h>
 #include <sys/param.h>
 #include <sys/mount.h>
-#include <sys/mntent.h>
-#include <sys/mnttab.h>
-#include <sys/avl.h>
-#include <stddef.h>
+#include <pthread.h>
+#include <umem.h>
 
 #include <libzfs.h>
 
 #include "zfs_namecheck.h"
 #include "zfs_prop.h"
+#include "zfs_fletcher.h"
 #include "libzfs_impl.h"
+#include <sha2.h>
+#include <sys/zio_checksum.h>
+#include <sys/ddt.h>
 
-#include <fletcher.c> /* XXX */
-
+/* in libzfs_dataset.c */
+extern void zfs_setprop_error(libzfs_handle_t *, zfs_prop_t, int, char *);
 /* We need to use something for ENODATA. */
 #define	ENODATA	EIDRM
 
 static int zfs_receive_impl(libzfs_handle_t *, const char *, recvflags_t,
-    int, avl_tree_t *, char **);
+    int, const char *, nvlist_t *, avl_tree_t *, char **, int, uint64_t *);
+
+static const zio_cksum_t zero_cksum = { 0 };
+
+typedef struct dedup_arg {
+	int	inputfd;
+	int	outputfd;
+	libzfs_handle_t  *dedup_hdl;
+} dedup_arg_t;
+
+typedef struct dataref {
+	uint64_t ref_guid;
+	uint64_t ref_object;
+	uint64_t ref_offset;
+} dataref_t;
+
+typedef struct dedup_entry {
+	struct dedup_entry	*dde_next;
+	zio_cksum_t dde_chksum;
+	uint64_t dde_prop;
+	dataref_t dde_ref;
+} dedup_entry_t;
+
+#define	MAX_DDT_PHYSMEM_PERCENT		20
+#define	SMALLEST_POSSIBLE_MAX_DDT_MB		128
+
+typedef struct dedup_table {
+	dedup_entry_t	**dedup_hash_array;
+	umem_cache_t	*ddecache;
+	uint64_t	max_ddt_size;  /* max dedup table size in bytes */
+	uint64_t	cur_ddt_size;  /* current dedup table size in bytes */
+	uint64_t	ddt_count;
+	int		numhashbits;
+	boolean_t	ddt_full;
+} dedup_table_t;
+
+static int
+high_order_bit(uint64_t n)
+{
+	int count;
+
+	for (count = 0; n != 0; count++)
+		n >>= 1;
+	return (count);
+}
+
+static size_t
+ssread(void *buf, size_t len, FILE *stream)
+{
+	size_t outlen;
+
+	if ((outlen = fread(buf, len, 1, stream)) == 0)
+		return (0);
+
+	return (outlen);
+}
+
+static void
+ddt_hash_append(libzfs_handle_t *hdl, dedup_table_t *ddt, dedup_entry_t **ddepp,
+    zio_cksum_t *cs, uint64_t prop, dataref_t *dr)
+{
+	dedup_entry_t	*dde;
+
+	if (ddt->cur_ddt_size >= ddt->max_ddt_size) {
+		if (ddt->ddt_full == B_FALSE) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "Dedup table full.  Deduplication will continue "
+			    "with existing table entries"));
+			ddt->ddt_full = B_TRUE;
+		}
+		return;
+	}
+
+	if ((dde = umem_cache_alloc(ddt->ddecache, UMEM_DEFAULT))
+	    != NULL) {
+		assert(*ddepp == NULL);
+		dde->dde_next = NULL;
+		dde->dde_chksum = *cs;
+		dde->dde_prop = prop;
+		dde->dde_ref = *dr;
+		*ddepp = dde;
+		ddt->cur_ddt_size += sizeof (dedup_entry_t);
+		ddt->ddt_count++;
+	}
+}
+
+/*
+ * Using the specified dedup table, do a lookup for an entry with
+ * the checksum cs.  If found, return the block's reference info
+ * in *dr. Otherwise, insert a new entry in the dedup table, using
+ * the reference information specified by *dr.
+ *
+ * return value:  true - entry was found
+ *		  false - entry was not found
+ */
+static boolean_t
+ddt_update(libzfs_handle_t *hdl, dedup_table_t *ddt, zio_cksum_t *cs,
+    uint64_t prop, dataref_t *dr)
+{
+	uint32_t hashcode;
+	dedup_entry_t **ddepp;
+
+	hashcode = BF64_GET(cs->zc_word[0], 0, ddt->numhashbits);
+
+	for (ddepp = &(ddt->dedup_hash_array[hashcode]); *ddepp != NULL;
+	    ddepp = &((*ddepp)->dde_next)) {
+		if (ZIO_CHECKSUM_EQUAL(((*ddepp)->dde_chksum), *cs) &&
+		    (*ddepp)->dde_prop == prop) {
+			*dr = (*ddepp)->dde_ref;
+			return (B_TRUE);
+		}
+	}
+	ddt_hash_append(hdl, ddt, ddepp, cs, prop, dr);
+	return (B_FALSE);
+}
+
+static int
+cksum_and_write(const void *buf, uint64_t len, zio_cksum_t *zc, int outfd)
+{
+	fletcher_4_incremental_native(buf, len, zc);
+	return (write(outfd, buf, len));
+}
+
+/*
+ * This function is started in a separate thread when the dedup option
+ * has been requested.  The main send thread determines the list of
+ * snapshots to be included in the send stream and makes the ioctl calls
+ * for each one.  But instead of having the ioctl send the output to the
+ * the output fd specified by the caller of zfs_send()), the
+ * ioctl is told to direct the output to a pipe, which is read by the
+ * alternate thread running THIS function.  This function does the
+ * dedup'ing by:
+ *  1. building a dedup table (the DDT)
+ *  2. doing checksums on each data block and inserting a record in the DDT
+ *  3. looking for matching checksums, and
+ *  4.  sending a DRR_WRITE_BYREF record instead of a write record whenever
+ *      a duplicate block is found.
+ * The output of this function then goes to the output fd requested
+ * by the caller of zfs_send().
+ */
+static void *
+cksummer(void *arg)
+{
+	dedup_arg_t *dda = arg;
+	char *buf = malloc(1<<20);
+	dmu_replay_record_t thedrr;
+	dmu_replay_record_t *drr = &thedrr;
+	struct drr_begin *drrb = &thedrr.drr_u.drr_begin;
+	struct drr_end *drre = &thedrr.drr_u.drr_end;
+	struct drr_object *drro = &thedrr.drr_u.drr_object;
+	struct drr_write *drrw = &thedrr.drr_u.drr_write;
+	struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
+	FILE *ofp;
+	int outfd;
+	dmu_replay_record_t wbr_drr = {0};
+	struct drr_write_byref *wbr_drrr = &wbr_drr.drr_u.drr_write_byref;
+	dedup_table_t ddt;
+	zio_cksum_t stream_cksum;
+	uint64_t physmem = sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE);
+	uint64_t numbuckets;
+
+	ddt.max_ddt_size =
+	    MAX((physmem * MAX_DDT_PHYSMEM_PERCENT)/100,
+	    SMALLEST_POSSIBLE_MAX_DDT_MB<<20);
+
+	numbuckets = ddt.max_ddt_size/(sizeof (dedup_entry_t));
+
+	/*
+	 * numbuckets must be a power of 2.  Increase number to
+	 * a power of 2 if necessary.
+	 */
+	if (!ISP2(numbuckets))
+		numbuckets = 1 << high_order_bit(numbuckets);
+
+	ddt.dedup_hash_array = calloc(numbuckets, sizeof (dedup_entry_t *));
+	ddt.ddecache = umem_cache_create("dde", sizeof (dedup_entry_t), 0,
+	    NULL, NULL, NULL, NULL, NULL, 0);
+	ddt.cur_ddt_size = numbuckets * sizeof (dedup_entry_t *);
+	ddt.numhashbits = high_order_bit(numbuckets) - 1;
+	ddt.ddt_full = B_FALSE;
+
+	/* Initialize the write-by-reference block. */
+	wbr_drr.drr_type = DRR_WRITE_BYREF;
+	wbr_drr.drr_payloadlen = 0;
+
+	outfd = dda->outputfd;
+	ofp = fdopen(dda->inputfd, "r");
+	while (ssread(drr, sizeof (dmu_replay_record_t), ofp) != 0) {
+
+		switch (drr->drr_type) {
+		case DRR_BEGIN:
+		{
+			int	fflags;
+			ZIO_SET_CHECKSUM(&stream_cksum, 0, 0, 0, 0);
+
+			/* set the DEDUP feature flag for this stream */
+			fflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo);
+			fflags |= (DMU_BACKUP_FEATURE_DEDUP |
+			    DMU_BACKUP_FEATURE_DEDUPPROPS);
+			DMU_SET_FEATUREFLAGS(drrb->drr_versioninfo, fflags);
+
+			if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
+			    &stream_cksum, outfd) == -1)
+				goto out;
+			if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) ==
+			    DMU_COMPOUNDSTREAM && drr->drr_payloadlen != 0) {
+				int sz = drr->drr_payloadlen;
+
+				if (sz > 1<<20) {
+					free(buf);
+					buf = malloc(sz);
+				}
+				(void) ssread(buf, sz, ofp);
+				if (ferror(stdin))
+					perror("fread");
+				if (cksum_and_write(buf, sz, &stream_cksum,
+				    outfd) == -1)
+					goto out;
+			}
+			break;
+		}
+
+		case DRR_END:
+		{
+			/* use the recalculated checksum */
+			ZIO_SET_CHECKSUM(&drre->drr_checksum,
+			    stream_cksum.zc_word[0], stream_cksum.zc_word[1],
+			    stream_cksum.zc_word[2], stream_cksum.zc_word[3]);
+			if ((write(outfd, drr,
+			    sizeof (dmu_replay_record_t))) == -1)
+				goto out;
+			break;
+		}
+
+		case DRR_OBJECT:
+		{
+			if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
+			    &stream_cksum, outfd) == -1)
+				goto out;
+			if (drro->drr_bonuslen > 0) {
+				(void) ssread(buf,
+				    P2ROUNDUP((uint64_t)drro->drr_bonuslen, 8),
+				    ofp);
+				if (cksum_and_write(buf,
+				    P2ROUNDUP((uint64_t)drro->drr_bonuslen, 8),
+				    &stream_cksum, outfd) == -1)
+					goto out;
+			}
+			break;
+		}
+
+		case DRR_SPILL:
+		{
+			if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
+			    &stream_cksum, outfd) == -1)
+				goto out;
+			(void) ssread(buf, drrs->drr_length, ofp);
+			if (cksum_and_write(buf, drrs->drr_length,
+			    &stream_cksum, outfd) == -1)
+				goto out;
+			break;
+		}
+
+		case DRR_FREEOBJECTS:
+		{
+			if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
+			    &stream_cksum, outfd) == -1)
+				goto out;
+			break;
+		}
+
+		case DRR_WRITE:
+		{
+			dataref_t	dataref;
+
+			(void) ssread(buf, drrw->drr_length, ofp);
+
+			/*
+			 * Use the existing checksum if it's dedup-capable,
+			 * else calculate a SHA256 checksum for it.
+			 */
+
+			if (ZIO_CHECKSUM_EQUAL(drrw->drr_key.ddk_cksum,
+			    zero_cksum) ||
+			    !DRR_IS_DEDUP_CAPABLE(drrw->drr_checksumflags)) {
+				SHA256_CTX	ctx;
+				zio_cksum_t	tmpsha256;
+
+				SHA256Init(&ctx);
+				SHA256Update(&ctx, buf, drrw->drr_length);
+				SHA256Final(&tmpsha256, &ctx);
+				drrw->drr_key.ddk_cksum.zc_word[0] =
+				    BE_64(tmpsha256.zc_word[0]);
+				drrw->drr_key.ddk_cksum.zc_word[1] =
+				    BE_64(tmpsha256.zc_word[1]);
+				drrw->drr_key.ddk_cksum.zc_word[2] =
+				    BE_64(tmpsha256.zc_word[2]);
+				drrw->drr_key.ddk_cksum.zc_word[3] =
+				    BE_64(tmpsha256.zc_word[3]);
+				drrw->drr_checksumtype = ZIO_CHECKSUM_SHA256;
+				drrw->drr_checksumflags = DRR_CHECKSUM_DEDUP;
+			}
+
+			dataref.ref_guid = drrw->drr_toguid;
+			dataref.ref_object = drrw->drr_object;
+			dataref.ref_offset = drrw->drr_offset;
+
+			if (ddt_update(dda->dedup_hdl, &ddt,
+			    &drrw->drr_key.ddk_cksum, drrw->drr_key.ddk_prop,
+			    &dataref)) {
+				/* block already present in stream */
+				wbr_drrr->drr_object = drrw->drr_object;
+				wbr_drrr->drr_offset = drrw->drr_offset;
+				wbr_drrr->drr_length = drrw->drr_length;
+				wbr_drrr->drr_toguid = drrw->drr_toguid;
+				wbr_drrr->drr_refguid = dataref.ref_guid;
+				wbr_drrr->drr_refobject =
+				    dataref.ref_object;
+				wbr_drrr->drr_refoffset =
+				    dataref.ref_offset;
+
+				wbr_drrr->drr_checksumtype =
+				    drrw->drr_checksumtype;
+				wbr_drrr->drr_checksumflags =
+				    drrw->drr_checksumtype;
+				wbr_drrr->drr_key.ddk_cksum =
+				    drrw->drr_key.ddk_cksum;
+				wbr_drrr->drr_key.ddk_prop =
+				    drrw->drr_key.ddk_prop;
+
+				if (cksum_and_write(&wbr_drr,
+				    sizeof (dmu_replay_record_t), &stream_cksum,
+				    outfd) == -1)
+					goto out;
+			} else {
+				/* block not previously seen */
+				if (cksum_and_write(drr,
+				    sizeof (dmu_replay_record_t), &stream_cksum,
+				    outfd) == -1)
+					goto out;
+				if (cksum_and_write(buf,
+				    drrw->drr_length,
+				    &stream_cksum, outfd) == -1)
+					goto out;
+			}
+			break;
+		}
+
+		case DRR_FREE:
+		{
+			if (cksum_and_write(drr, sizeof (dmu_replay_record_t),
+			    &stream_cksum, outfd) == -1)
+				goto out;
+			break;
+		}
+
+		default:
+			(void) printf("INVALID record type 0x%x\n",
+			    drr->drr_type);
+			/* should never happen, so assert */
+			assert(B_FALSE);
+		}
+	}
+out:
+	umem_cache_destroy(ddt.ddecache);
+	free(ddt.dedup_hash_array);
+	free(buf);
+	(void) fclose(ofp);
+
+	return (NULL);
+}
 
 /*
  * Routines for dealing with the AVL tree of fs-nvlists
@@ -116,6 +487,9 @@ fsavl_destroy(avl_tree_t *avl)
 	free(avl);
 }
 
+/*
+ * Given an nvlist, produce an avl tree of snapshots, ordered by guid
+ */
 static avl_tree_t *
 fsavl_create(nvlist_t *fss)
 {
@@ -173,6 +547,7 @@ typedef struct send_data {
 	nvlist_t *snapprops;
 	const char *fromsnap;
 	const char *tosnap;
+	boolean_t recursive;
 
 	/*
 	 * The header nvlist is of the following format:
@@ -240,25 +615,50 @@ send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv)
 		zfs_prop_t prop = zfs_name_to_prop(propname);
 		nvlist_t *propnv;
 
-		assert(zfs_prop_user(propname) || prop != ZPROP_INVAL);
+		if (!zfs_prop_user(propname)) {
+			/*
+			 * Realistically, this should never happen.  However,
+			 * we want the ability to add DSL properties without
+			 * needing to make incompatible version changes.  We
+			 * need to ignore unknown properties to allow older
+			 * software to still send datasets containing these
+			 * properties, with the unknown properties elided.
+			 */
+			if (prop == ZPROP_INVAL)
+				continue;
 
-		if (!zfs_prop_user(propname) && zfs_prop_readonly(prop))
-			continue;
+			if (zfs_prop_readonly(prop))
+				continue;
+		}
 
 		verify(nvpair_value_nvlist(elem, &propnv) == 0);
-		if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION) {
-			/* these guys are modifyable, but have no source */
+		if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION ||
+		    prop == ZFS_PROP_REFQUOTA ||
+		    prop == ZFS_PROP_REFRESERVATION) {
+			char *source;
 			uint64_t value;
 			verify(nvlist_lookup_uint64(propnv,
 			    ZPROP_VALUE, &value) == 0);
 			if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT)
 				continue;
+			/*
+			 * May have no source before SPA_VERSION_RECVD_PROPS,
+			 * but is still modifiable.
+			 */
+			if (nvlist_lookup_string(propnv,
+			    ZPROP_SOURCE, &source) == 0) {
+				if ((strcmp(source, zhp->zfs_name) != 0) &&
+				    (strcmp(source,
+				    ZPROP_SOURCE_VAL_RECVD) != 0))
+					continue;
+			}
 		} else {
 			char *source;
 			if (nvlist_lookup_string(propnv,
 			    ZPROP_SOURCE, &source) != 0)
 				continue;
-			if (strcmp(source, zhp->zfs_name) != 0)
+			if ((strcmp(source, zhp->zfs_name) != 0) &&
+			    (strcmp(source, ZPROP_SOURCE_VAL_RECVD) != 0))
 				continue;
 		}
 
@@ -277,12 +677,17 @@ send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv)
 	}
 }
 
+/*
+ * recursively generate nvlists describing datasets.  See comment
+ * for the data structure send_data_t above for description of contents
+ * of the nvlist.
+ */
 static int
 send_iterate_fs(zfs_handle_t *zhp, void *arg)
 {
 	send_data_t *sd = arg;
 	nvlist_t *nvfs, *nv;
-	int rv;
+	int rv = 0;
 	uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid;
 	uint64_t guid = zhp->zfs_dmustats.dds_guid;
 	char guidstring[64];
@@ -324,7 +729,8 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg)
 	nvlist_free(nvfs);
 
 	/* iterate over children */
-	rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd);
+	if (sd->recursive)
+		rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd);
 
 	sd->parent_fromsnap_guid = parent_fromsnap_guid_save;
 
@@ -334,7 +740,7 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg)
 
 static int
 gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap,
-    const char *tosnap, nvlist_t **nvlp, avl_tree_t **avlp)
+    const char *tosnap, boolean_t recursive, nvlist_t **nvlp, avl_tree_t **avlp)
 {
 	zfs_handle_t *zhp;
 	send_data_t sd = { 0 };
@@ -347,6 +753,7 @@ gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap,
 	VERIFY(0 == nvlist_alloc(&sd.fss, NV_UNIQUE_NAME, 0));
 	sd.fromsnap = fromsnap;
 	sd.tosnap = tosnap;
+	sd.recursive = recursive;
 
 	if ((error = send_iterate_fs(zhp, &sd)) != 0) {
 		nvlist_free(sd.fss);
@@ -378,14 +785,30 @@ static int
 zfs_sort_snaps(zfs_handle_t *zhp, void *data)
 {
 	avl_tree_t *avl = data;
-	zfs_node_t *node = zfs_alloc(zhp->zfs_hdl, sizeof (zfs_node_t));
+	zfs_node_t *node;
+	zfs_node_t search;
+
+	search.zn_handle = zhp;
+	node = avl_find(avl, &search, NULL);
+	if (node) {
+		/*
+		 * If this snapshot was renamed while we were creating the
+		 * AVL tree, it's possible that we already inserted it under
+		 * its old name. Remove the old handle before adding the new
+		 * one.
+		 */
+		zfs_close(node->zn_handle);
+		avl_remove(avl, node);
+		free(node);
+	}
 
+	node = zfs_alloc(zhp->zfs_hdl, sizeof (zfs_node_t));
 	node->zn_handle = zhp;
 	avl_add(avl, node);
+
 	return (0);
 }
 
-/* ARGSUSED */
 static int
 zfs_snapshot_compare(const void *larg, const void *rarg)
 {
@@ -408,7 +831,7 @@ zfs_snapshot_compare(const void *larg, const void *rarg)
 		return (0);
 }
 
-static int
+int
 zfs_iter_snapshots_sorted(zfs_handle_t *zhp, zfs_iter_f callback, void *data)
 {
 	int ret = 0;
@@ -439,13 +862,19 @@ typedef struct send_dump_data {
 	/* these are all just the short snapname (the part after the @) */
 	const char *fromsnap;
 	const char *tosnap;
-	char lastsnap[ZFS_MAXNAMELEN];
+	char prevsnap[ZFS_MAXNAMELEN];
+	uint64_t prevsnap_obj;
 	boolean_t seenfrom, seento, replicate, doall, fromorigin;
 	boolean_t verbose;
 	int outfd;
 	boolean_t err;
 	nvlist_t *fss;
 	avl_tree_t *fsavl;
+	snapfilter_cb_t *filter_cb;
+	void *filter_cb_arg;
+	nvlist_t *debugnv;
+	char holdtag[ZFS_MAXNAMELEN];
+	int cleanup_fd;
 } send_dump_data_t;
 
 /*
@@ -453,26 +882,40 @@ typedef struct send_dump_data {
  * NULL) to the file descriptor specified by outfd.
  */
 static int
-dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, boolean_t fromorigin,
-    int outfd)
+dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, uint64_t fromsnap_obj,
+    boolean_t fromorigin, int outfd, nvlist_t *debugnv)
 {
 	zfs_cmd_t zc = { 0 };
 	libzfs_handle_t *hdl = zhp->zfs_hdl;
+	nvlist_t *thisdbg;
 
 	assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
-	assert(fromsnap == NULL || fromsnap[0] == '\0' || !fromorigin);
+	assert(fromsnap_obj == 0 || !fromorigin);
 
 	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
-	if (fromsnap)
-		(void) strlcpy(zc.zc_value, fromsnap, sizeof (zc.zc_value));
 	zc.zc_cookie = outfd;
 	zc.zc_obj = fromorigin;
+	zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID);
+	zc.zc_fromobj = fromsnap_obj;
+
+	VERIFY(0 == nvlist_alloc(&thisdbg, NV_UNIQUE_NAME, 0));
+	if (fromsnap && fromsnap[0] != '\0') {
+		VERIFY(0 == nvlist_add_string(thisdbg,
+		    "fromsnap", fromsnap));
+	}
 
 	if (ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SEND, &zc) != 0) {
 		char errbuf[1024];
 		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 		    "warning: cannot send '%s'"), zhp->zfs_name);
 
+		VERIFY(0 == nvlist_add_uint64(thisdbg, "error", errno));
+		if (debugnv) {
+			VERIFY(0 == nvlist_add_nvlist(debugnv,
+			    zhp->zfs_name, thisdbg));
+		}
+		nvlist_free(thisdbg);
+
 		switch (errno) {
 
 		case EXDEV:
@@ -507,24 +950,74 @@ dump_ioctl(zfs_handle_t *zhp, const char *fromsnap, boolean_t fromorigin,
 		}
 	}
 
+	if (debugnv)
+		VERIFY(0 == nvlist_add_nvlist(debugnv, zhp->zfs_name, thisdbg));
+	nvlist_free(thisdbg);
+
 	return (0);
 }
 
 static int
+hold_for_send(zfs_handle_t *zhp, send_dump_data_t *sdd)
+{
+	zfs_handle_t *pzhp;
+	int error = 0;
+	char *thissnap;
+
+	assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
+
+	/*
+	 * zfs_send() only opens a cleanup_fd for sends that need it,
+	 * e.g. replication and doall.
+	 */
+	if (sdd->cleanup_fd == -1)
+		return (0);
+
+	thissnap = strchr(zhp->zfs_name, '@') + 1;
+	*(thissnap - 1) = '\0';
+	pzhp = zfs_open(zhp->zfs_hdl, zhp->zfs_name, ZFS_TYPE_DATASET);
+	*(thissnap - 1) = '@';
+
+	/*
+	 * It's OK if the parent no longer exists.  The send code will
+	 * handle that error.
+	 */
+	if (pzhp) {
+		error = zfs_hold(pzhp, thissnap, sdd->holdtag,
+		    B_FALSE, B_TRUE, B_TRUE, sdd->cleanup_fd,
+		    zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID),
+		    zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG));
+		zfs_close(pzhp);
+	}
+
+	return (error);
+}
+
+static int
 dump_snapshot(zfs_handle_t *zhp, void *arg)
 {
 	send_dump_data_t *sdd = arg;
-	const char *thissnap;
+	char *thissnap;
 	int err;
+	boolean_t isfromsnap, istosnap;
+	boolean_t exclude = B_FALSE;
 
 	thissnap = strchr(zhp->zfs_name, '@') + 1;
+	isfromsnap = (sdd->fromsnap != NULL &&
+	    strcmp(sdd->fromsnap, thissnap) == 0);
 
-	if (sdd->fromsnap && !sdd->seenfrom &&
-	    strcmp(sdd->fromsnap, thissnap) == 0) {
-		sdd->seenfrom = B_TRUE;
-		(void) strcpy(sdd->lastsnap, thissnap);
+	if (!sdd->seenfrom && isfromsnap) {
+		err = hold_for_send(zhp, sdd);
+		if (err == 0) {
+			sdd->seenfrom = B_TRUE;
+			(void) strcpy(sdd->prevsnap, thissnap);
+			sdd->prevsnap_obj = zfs_prop_get_int(zhp,
+			    ZFS_PROP_OBJSETID);
+		} else if (err == ENOENT) {
+			err = 0;
+		}
 		zfs_close(zhp);
-		return (0);
+		return (err);
 	}
 
 	if (sdd->seento || !sdd->seenfrom) {
@@ -532,20 +1025,69 @@ dump_snapshot(zfs_handle_t *zhp, void *arg)
 		return (0);
 	}
 
+	istosnap = (strcmp(sdd->tosnap, thissnap) == 0);
+	if (istosnap)
+		sdd->seento = B_TRUE;
+
+	if (!sdd->doall && !isfromsnap && !istosnap) {
+		if (sdd->replicate) {
+			char *snapname;
+			nvlist_t *snapprops;
+			/*
+			 * Filter out all intermediate snapshots except origin
+			 * snapshots needed to replicate clones.
+			 */
+			nvlist_t *nvfs = fsavl_find(sdd->fsavl,
+			    zhp->zfs_dmustats.dds_guid, &snapname);
+
+			VERIFY(0 == nvlist_lookup_nvlist(nvfs,
+			    "snapprops", &snapprops));
+			VERIFY(0 == nvlist_lookup_nvlist(snapprops,
+			    thissnap, &snapprops));
+			exclude = !nvlist_exists(snapprops, "is_clone_origin");
+		} else {
+			exclude = B_TRUE;
+		}
+	}
+
+	/*
+	 * If a filter function exists, call it to determine whether
+	 * this snapshot will be sent.
+	 */
+	if (exclude || (sdd->filter_cb != NULL &&
+	    sdd->filter_cb(zhp, sdd->filter_cb_arg) == B_FALSE)) {
+		/*
+		 * This snapshot is filtered out.  Don't send it, and don't
+		 * set prevsnap_obj, so it will be as if this snapshot didn't
+		 * exist, and the next accepted snapshot will be sent as
+		 * an incremental from the last accepted one, or as the
+		 * first (and full) snapshot in the case of a replication,
+		 * non-incremental send.
+		 */
+		zfs_close(zhp);
+		return (0);
+	}
+
+	err = hold_for_send(zhp, sdd);
+	if (err) {
+		if (err == ENOENT)
+			err = 0;
+		zfs_close(zhp);
+		return (err);
+	}
+
 	/* send it */
 	if (sdd->verbose) {
 		(void) fprintf(stderr, "sending from @%s to %s\n",
-		    sdd->lastsnap, zhp->zfs_name);
+		    sdd->prevsnap, zhp->zfs_name);
 	}
 
-	err = dump_ioctl(zhp, sdd->lastsnap,
-	    sdd->lastsnap[0] == '\0' && (sdd->fromorigin || sdd->replicate),
-	    sdd->outfd);
+	err = dump_ioctl(zhp, sdd->prevsnap, sdd->prevsnap_obj,
+	    sdd->prevsnap[0] == '\0' && (sdd->fromorigin || sdd->replicate),
+	    sdd->outfd, sdd->debugnv);
 
-	if (!sdd->seento && strcmp(sdd->tosnap, thissnap) == 0)
-		sdd->seento = B_TRUE;
-
-	(void) strcpy(sdd->lastsnap, thissnap);
+	(void) strcpy(sdd->prevsnap, thissnap);
+	sdd->prevsnap_obj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID);
 	zfs_close(zhp);
 	return (err);
 }
@@ -584,51 +1126,33 @@ dump_filesystem(zfs_handle_t *zhp, void *arg)
 		}
 	}
 
-	if (sdd->doall) {
-		sdd->seenfrom = sdd->seento = sdd->lastsnap[0] = 0;
-		if (sdd->fromsnap == NULL || missingfrom)
-			sdd->seenfrom = B_TRUE;
+	sdd->seenfrom = sdd->seento = sdd->prevsnap[0] = 0;
+	sdd->prevsnap_obj = 0;
+	if (sdd->fromsnap == NULL || missingfrom)
+		sdd->seenfrom = B_TRUE;
 
-		rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, arg);
-		if (!sdd->seenfrom) {
+	rv = zfs_iter_snapshots_sorted(zhp, dump_snapshot, arg);
+	if (!sdd->seenfrom) {
+		(void) fprintf(stderr,
+		    "WARNING: could not send %s@%s:\n"
+		    "incremental source (%s@%s) does not exist\n",
+		    zhp->zfs_name, sdd->tosnap,
+		    zhp->zfs_name, sdd->fromsnap);
+		sdd->err = B_TRUE;
+	} else if (!sdd->seento) {
+		if (sdd->fromsnap) {
 			(void) fprintf(stderr,
 			    "WARNING: could not send %s@%s:\n"
-			    "incremental source (%s@%s) does not exist\n",
+			    "incremental source (%s@%s) "
+			    "is not earlier than it\n",
 			    zhp->zfs_name, sdd->tosnap,
 			    zhp->zfs_name, sdd->fromsnap);
-			sdd->err = B_TRUE;
-		} else if (!sdd->seento) {
-			if (sdd->fromsnap) {
-				(void) fprintf(stderr,
-				    "WARNING: could not send %s@%s:\n"
-				    "incremental source (%s@%s) "
-				    "is not earlier than it\n",
-				    zhp->zfs_name, sdd->tosnap,
-				    zhp->zfs_name, sdd->fromsnap);
-			} else {
-				(void) fprintf(stderr, "WARNING: "
-				    "could not send %s@%s: does not exist\n",
-				    zhp->zfs_name, sdd->tosnap);
-			}
-			sdd->err = B_TRUE;
-		}
-	} else {
-		zfs_handle_t *snapzhp;
-		char snapname[ZFS_MAXNAMELEN];
-
-		(void) snprintf(snapname, sizeof (snapname), "%s@%s",
-		    zfs_get_name(zhp), sdd->tosnap);
-		snapzhp = zfs_open(zhp->zfs_hdl, snapname, ZFS_TYPE_SNAPSHOT);
-		if (snapzhp == NULL) {
-			rv = -1;
 		} else {
-			rv = dump_ioctl(snapzhp,
-			    missingfrom ? NULL : sdd->fromsnap,
-			    sdd->fromorigin || missingfrom,
-			    sdd->outfd);
-			sdd->seento = B_TRUE;
-			zfs_close(snapzhp);
+			(void) fprintf(stderr, "WARNING: "
+			    "could not send %s@%s: does not exist\n",
+			    zhp->zfs_name, sdd->tosnap);
 		}
+		sdd->err = B_TRUE;
 	}
 
 	return (rv);
@@ -644,6 +1168,29 @@ dump_filesystems(zfs_handle_t *rzhp, void *arg)
 	if (!sdd->replicate)
 		return (dump_filesystem(rzhp, sdd));
 
+	/* Mark the clone origin snapshots. */
+	for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair;
+	    fspair = nvlist_next_nvpair(sdd->fss, fspair)) {
+		nvlist_t *nvfs;
+		uint64_t origin_guid = 0;
+
+		VERIFY(0 == nvpair_value_nvlist(fspair, &nvfs));
+		(void) nvlist_lookup_uint64(nvfs, "origin", &origin_guid);
+		if (origin_guid != 0) {
+			char *snapname;
+			nvlist_t *origin_nv = fsavl_find(sdd->fsavl,
+			    origin_guid, &snapname);
+			if (origin_nv != NULL) {
+				nvlist_t *snapprops;
+				VERIFY(0 == nvlist_lookup_nvlist(origin_nv,
+				    "snapprops", &snapprops));
+				VERIFY(0 == nvlist_lookup_nvlist(snapprops,
+				    snapname, &snapprops));
+				VERIFY(0 == nvlist_add_boolean(
+				    snapprops, "is_clone_origin"));
+			}
+		}
+	}
 again:
 	needagain = progress = B_FALSE;
 	for (fspair = nvlist_next_nvpair(sdd->fss, NULL); fspair;
@@ -653,7 +1200,6 @@ again:
 		zfs_handle_t *zhp;
 		int err;
 		uint64_t origin_guid = 0;
-		nvlist_t *origin_nv;
 
 		VERIFY(nvpair_value_nvlist(fspair, &fslist) == 0);
 		if (nvlist_lookup_boolean(fslist, "sent") == 0)
@@ -662,15 +1208,19 @@ again:
 		VERIFY(nvlist_lookup_string(fslist, "name", &fsname) == 0);
 		(void) nvlist_lookup_uint64(fslist, "origin", &origin_guid);
 
-		origin_nv = fsavl_find(sdd->fsavl, origin_guid, NULL);
-		if (origin_nv &&
-		    nvlist_lookup_boolean(origin_nv, "sent") == ENOENT) {
-			/*
-			 * origin has not been sent yet;
-			 * skip this clone.
-			 */
-			needagain = B_TRUE;
-			continue;
+		if (origin_guid != 0) {
+			nvlist_t *origin_nv = fsavl_find(sdd->fsavl,
+			    origin_guid, NULL);
+			if (origin_nv != NULL &&
+			    nvlist_lookup_boolean(origin_nv,
+			    "sent") == ENOENT) {
+				/*
+				 * origin has not been sent yet;
+				 * skip this clone.
+				 */
+				needagain = B_TRUE;
+				continue;
+			}
 		}
 
 		zhp = zfs_open(rzhp->zfs_hdl, fsname, ZFS_TYPE_DATASET);
@@ -691,20 +1241,38 @@ again:
 }
 
 /*
- * Dumps a backup of tosnap, incremental from fromsnap if it isn't NULL.
- * If 'doall', dump all intermediate snaps.
- * If 'replicate', dump special header and do recursively.
+ * Generate a send stream for the dataset identified by the argument zhp.
+ *
+ * The content of the send stream is the snapshot identified by
+ * 'tosnap'.  Incremental streams are requested in two ways:
+ *     - from the snapshot identified by "fromsnap" (if non-null) or
+ *     - from the origin of the dataset identified by zhp, which must
+ *	 be a clone.  In this case, "fromsnap" is null and "fromorigin"
+ *	 is TRUE.
+ *
+ * The send stream is recursive (i.e. dumps a hierarchy of snapshots) and
+ * uses a special header (with a hdrtype field of DMU_COMPOUNDSTREAM)
+ * if "replicate" is set.  If "doall" is set, dump all the intermediate
+ * snapshots. The DMU_COMPOUNDSTREAM header is used in the "doall"
+ * case too. If "props" is set, send properties.
  */
 int
 zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
-    boolean_t replicate, boolean_t doall, boolean_t fromorigin,
-    boolean_t verbose, int outfd)
+    sendflags_t flags, int outfd, snapfilter_cb_t filter_func,
+    void *cb_arg, nvlist_t **debugnvp)
 {
 	char errbuf[1024];
 	send_dump_data_t sdd = { 0 };
 	int err;
 	nvlist_t *fss = NULL;
 	avl_tree_t *fsavl = NULL;
+	static uint64_t holdseq;
+	int spa_version;
+	boolean_t holdsnaps = B_FALSE;
+	pthread_t tid;
+	int pipefd[2];
+	dedup_arg_t dda = { 0 };
+	int featureflags = 0;
 
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 	    "cannot send '%s'"), zhp->zfs_name);
@@ -715,15 +1283,46 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
 		return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf));
 	}
 
-	if (replicate || doall) {
+	if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM) {
+		uint64_t version;
+		version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
+		if (version >= ZPL_VERSION_SA) {
+			featureflags |= DMU_BACKUP_FEATURE_SA_SPILL;
+		}
+	}
+
+	if (zfs_spa_version(zhp, &spa_version) == 0 &&
+	    spa_version >= SPA_VERSION_USERREFS &&
+	    (flags.doall || flags.replicate))
+		holdsnaps = B_TRUE;
+
+	if (flags.dedup) {
+		featureflags |= (DMU_BACKUP_FEATURE_DEDUP |
+		    DMU_BACKUP_FEATURE_DEDUPPROPS);
+		if (err = pipe(pipefd)) {
+			zfs_error_aux(zhp->zfs_hdl, strerror(errno));
+			return (zfs_error(zhp->zfs_hdl, EZFS_PIPEFAILED,
+			    errbuf));
+		}
+		dda.outputfd = outfd;
+		dda.inputfd = pipefd[1];
+		dda.dedup_hdl = zhp->zfs_hdl;
+		if (err = pthread_create(&tid, NULL, cksummer, &dda)) {
+			(void) close(pipefd[0]);
+			(void) close(pipefd[1]);
+			zfs_error_aux(zhp->zfs_hdl, strerror(errno));
+			return (zfs_error(zhp->zfs_hdl,
+			    EZFS_THREADCREATEFAILED, errbuf));
+		}
+	}
+
+	if (flags.replicate || flags.doall || flags.props) {
 		dmu_replay_record_t drr = { 0 };
 		char *packbuf = NULL;
 		size_t buflen = 0;
 		zio_cksum_t zc = { 0 };
 
-		assert(fromsnap || doall);
-
-		if (replicate) {
+		if (flags.replicate || flags.props) {
 			nvlist_t *hdrnv;
 
 			VERIFY(0 == nvlist_alloc(&hdrnv, NV_UNIQUE_NAME, 0));
@@ -732,45 +1331,52 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
 				    "fromsnap", fromsnap));
 			}
 			VERIFY(0 == nvlist_add_string(hdrnv, "tosnap", tosnap));
+			if (!flags.replicate) {
+				VERIFY(0 == nvlist_add_boolean(hdrnv,
+				    "not_recursive"));
+			}
 
 			err = gather_nvlist(zhp->zfs_hdl, zhp->zfs_name,
-			    fromsnap, tosnap, &fss, &fsavl);
+			    fromsnap, tosnap, flags.replicate, &fss, &fsavl);
 			if (err)
-				return (err);
+				goto err_out;
 			VERIFY(0 == nvlist_add_nvlist(hdrnv, "fss", fss));
 			err = nvlist_pack(hdrnv, &packbuf, &buflen,
 			    NV_ENCODE_XDR, 0);
-			nvlist_free(hdrnv);
+			if (debugnvp)
+				*debugnvp = hdrnv;
+			else
+				nvlist_free(hdrnv);
 			if (err) {
 				fsavl_destroy(fsavl);
 				nvlist_free(fss);
-				return (zfs_standard_error(zhp->zfs_hdl,
-				    err, errbuf));
+				goto stderr_out;
 			}
 		}
 
 		/* write first begin record */
 		drr.drr_type = DRR_BEGIN;
 		drr.drr_u.drr_begin.drr_magic = DMU_BACKUP_MAGIC;
-		drr.drr_u.drr_begin.drr_version = DMU_BACKUP_HEADER_VERSION;
+		DMU_SET_STREAM_HDRTYPE(drr.drr_u.drr_begin.drr_versioninfo,
+		    DMU_COMPOUNDSTREAM);
+		DMU_SET_FEATUREFLAGS(drr.drr_u.drr_begin.drr_versioninfo,
+		    featureflags);
 		(void) snprintf(drr.drr_u.drr_begin.drr_toname,
 		    sizeof (drr.drr_u.drr_begin.drr_toname),
 		    "%s@%s", zhp->zfs_name, tosnap);
 		drr.drr_payloadlen = buflen;
-		fletcher_4_incremental_native(&drr, sizeof (drr), &zc);
-		err = write(outfd, &drr, sizeof (drr));
+		err = cksum_and_write(&drr, sizeof (drr), &zc, outfd);
 
 		/* write header nvlist */
-		if (err != -1) {
-			fletcher_4_incremental_native(packbuf, buflen, &zc);
-			err = write(outfd, packbuf, buflen);
+		if (err != -1 && packbuf != NULL) {
+			err = cksum_and_write(packbuf, buflen, &zc, outfd);
 		}
 		free(packbuf);
 		if (err == -1) {
 			fsavl_destroy(fsavl);
 			nvlist_free(fss);
-			return (zfs_standard_error(zhp->zfs_hdl,
-			    errno, errbuf));
+			err = errno;
+			goto stderr_out;
 		}
 
 		/* write end record */
@@ -782,8 +1388,8 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
 			if (err == -1) {
 				fsavl_destroy(fsavl);
 				nvlist_free(fss);
-				return (zfs_standard_error(zhp->zfs_hdl,
-				    errno, errbuf));
+				err = errno;
+				goto stderr_out;
 			}
 		}
 	}
@@ -791,18 +1397,47 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
 	/* dump each stream */
 	sdd.fromsnap = fromsnap;
 	sdd.tosnap = tosnap;
-	sdd.outfd = outfd;
-	sdd.replicate = replicate;
-	sdd.doall = doall;
-	sdd.fromorigin = fromorigin;
+	if (flags.dedup)
+		sdd.outfd = pipefd[0];
+	else
+		sdd.outfd = outfd;
+	sdd.replicate = flags.replicate;
+	sdd.doall = flags.doall;
+	sdd.fromorigin = flags.fromorigin;
 	sdd.fss = fss;
 	sdd.fsavl = fsavl;
-	sdd.verbose = verbose;
+	sdd.verbose = flags.verbose;
+	sdd.filter_cb = filter_func;
+	sdd.filter_cb_arg = cb_arg;
+	if (debugnvp)
+		sdd.debugnv = *debugnvp;
+	if (holdsnaps) {
+		++holdseq;
+		(void) snprintf(sdd.holdtag, sizeof (sdd.holdtag),
+		    ".send-%d-%llu", getpid(), (u_longlong_t)holdseq);
+		sdd.cleanup_fd = open(ZFS_DEV, O_RDWR|O_EXCL);
+		if (sdd.cleanup_fd < 0) {
+			err = errno;
+			goto stderr_out;
+		}
+	} else {
+		sdd.cleanup_fd = -1;
+	}
 	err = dump_filesystems(zhp, &sdd);
 	fsavl_destroy(fsavl);
 	nvlist_free(fss);
 
-	if (replicate || doall) {
+	if (flags.dedup) {
+		(void) close(pipefd[0]);
+		(void) pthread_join(tid, NULL);
+	}
+
+	if (sdd.cleanup_fd != -1) {
+		VERIFY(0 == close(sdd.cleanup_fd));
+		sdd.cleanup_fd = -1;
+	}
+
+	if (flags.replicate || flags.doall || flags.props) {
 		/*
 		 * write final end record.  NB: want to do this even if
 		 * there was some error, because it might not be totally
@@ -817,6 +1452,18 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap,
 	}
 
 	return (err || sdd.err);
+
+stderr_out:
+	err = zfs_standard_error(zhp->zfs_hdl, err, errbuf);
+err_out:
+	if (sdd.cleanup_fd != -1)
+		VERIFY(0 == close(sdd.cleanup_fd));
+	if (flags.dedup) {
+		(void) pthread_cancel(tid);
+		(void) pthread_join(tid, NULL);
+		(void) close(pipefd[0]);
+	}
+	return (err);
 }
 
 /*
@@ -902,11 +1549,12 @@ recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname,
 	if (err)
 		return (err);
 
+	zc.zc_objset_type = DMU_OST_ZFS;
+	(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
+
 	if (tryname) {
 		(void) strcpy(newname, tryname);
 
-		zc.zc_objset_type = DMU_OST_ZFS;
-		(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
 		(void) strlcpy(zc.zc_value, tryname, sizeof (zc.zc_value));
 
 		if (flags.verbose) {
@@ -961,12 +1609,18 @@ recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
 	int err = 0;
 	prop_changelist_t *clp;
 	zfs_handle_t *zhp;
+	boolean_t defer = B_FALSE;
+	int spa_version;
 
 	zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
 	if (zhp == NULL)
 		return (-1);
 	clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
 	    flags.force ? MS_FORCE : 0);
+	if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
+	    zfs_spa_version(zhp, &spa_version) == 0 &&
+	    spa_version >= SPA_VERSION_USERREFS)
+		defer = B_TRUE;
 	zfs_close(zhp);
 	if (clp == NULL)
 		return (-1);
@@ -975,12 +1629,12 @@ recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
 		return (err);
 
 	zc.zc_objset_type = DMU_OST_ZFS;
+	zc.zc_defer_destroy = defer;
 	(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
 
 	if (flags.verbose)
 		(void) printf("attempting destroy %s\n", zc.zc_name);
 	err = ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc);
-
 	if (err == 0) {
 		if (flags.verbose)
 			(void) printf("success\n");
@@ -990,8 +1644,14 @@ recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
 	(void) changelist_postfix(clp);
 	changelist_free(clp);
 
-	if (err != 0)
+	/*
+	 * Deferred destroy might destroy the snapshot or only mark it to be
+	 * destroyed later, and it returns success in either case.
+	 */
+	if (err != 0 || (defer && zfs_dataset_exists(hdl, name,
+	    ZFS_TYPE_SNAPSHOT))) {
 		err = recv_rename(hdl, name, NULL, baselen, newname, flags);
+	}
 
 	return (err);
 }
@@ -1009,6 +1669,7 @@ guid_to_name_cb(zfs_handle_t *zhp, void *arg)
 
 	if (zhp->zfs_dmustats.dds_guid == gtnd->guid) {
 		(void) strcpy(gtnd->name, zhp->zfs_name);
+		zfs_close(zhp);
 		return (EEXIST);
 	}
 	err = zfs_iter_children(zhp, guid_to_name_cb, gtnd);
@@ -1099,19 +1760,22 @@ created_before(libzfs_handle_t *hdl, avl_tree_t *avl,
 
 static int
 recv_incremental_replication(libzfs_handle_t *hdl, const char *tofs,
-    recvflags_t flags, nvlist_t *stream_nv, avl_tree_t *stream_avl)
+    recvflags_t flags, nvlist_t *stream_nv, avl_tree_t *stream_avl,
+    nvlist_t *renamed)
 {
 	nvlist_t *local_nv;
 	avl_tree_t *local_avl;
 	nvpair_t *fselem, *nextfselem;
-	char *tosnap, *fromsnap;
+	char *fromsnap;
 	char newname[ZFS_MAXNAMELEN];
 	int error;
-	boolean_t needagain, progress;
+	boolean_t needagain, progress, recursive;
 	char *s1, *s2;
 
 	VERIFY(0 == nvlist_lookup_string(stream_nv, "fromsnap", &fromsnap));
-	VERIFY(0 == nvlist_lookup_string(stream_nv, "tosnap", &tosnap));
+
+	recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") ==
+	    ENOENT);
 
 	if (flags.dryrun)
 		return (0);
@@ -1120,7 +1784,7 @@ again:
 	needagain = progress = B_FALSE;
 
 	if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL,
-	    &local_nv, &local_avl)) != 0)
+	    recursive, &local_nv, &local_avl)) != 0)
 		return (error);
 
 	/*
@@ -1135,7 +1799,7 @@ again:
 		uint64_t originguid = 0;
 		uint64_t stream_originguid = 0;
 		uint64_t parent_fromsnap_guid, stream_parent_fromsnap_guid;
-		char *fsname, *stream_fsname, *p1, *p2;
+		char *fsname, *stream_fsname;
 
 		nextfselem = nvlist_next_nvpair(local_nv, fselem);
 
@@ -1243,7 +1907,7 @@ again:
 			    stream_snapname, &props)) {
 				zfs_cmd_t zc = { 0 };
 
-				zc.zc_cookie = B_TRUE; /* clear current props */
+				zc.zc_cookie = B_TRUE; /* received */
 				(void) snprintf(zc.zc_name, sizeof (zc.zc_name),
 				    "%s@%s", fsname, nvpair_name(snapelem));
 				if (zcmd_write_src_nvlist(hdl, &zc,
@@ -1291,10 +1955,13 @@ again:
 			continue;
 		}
 
-		if (fromguid == 0 && flags.verbose) {
-			(void) printf("local fs %s does not have fromsnap "
-			    "(%s in stream); must have been deleted locally; "
-			    "ignoring\n", fsname, fromsnap);
+		if (fromguid == 0) {
+			if (flags.verbose) {
+				(void) printf("local fs %s does not have "
+				    "fromsnap (%s in stream); must have "
+				    "been deleted locally; ignoring\n",
+				    fsname, fromsnap);
+			}
 			continue;
 		}
 
@@ -1306,10 +1973,16 @@ again:
 		s1 = strrchr(fsname, '/');
 		s2 = strrchr(stream_fsname, '/');
 
-		/* check for rename */
+		/*
+		 * Check for rename. If the exact receive path is specified, it
+		 * does not count as a rename, but we still need to check the
+		 * datasets beneath it.
+		 */
 		if ((stream_parent_fromsnap_guid != 0 &&
+		    parent_fromsnap_guid != 0 &&
 		    stream_parent_fromsnap_guid != parent_fromsnap_guid) ||
-		    ((s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) {
+		    ((flags.isprefix || strcmp(tofs, fsname) != 0) &&
+		    (s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) {
 			nvlist_t *parent;
 			char tryname[ZFS_MAXNAMELEN];
 
@@ -1328,7 +2001,7 @@ again:
 				VERIFY(0 == nvlist_lookup_string(parent, "name",
 				    &pname));
 				(void) snprintf(tryname, sizeof (tryname),
-				    "%s%s", pname, p2 != NULL ? p2 : "");
+				    "%s%s", pname, strrchr(stream_fsname, '/'));
 			} else {
 				tryname[0] = '\0';
 				if (flags.verbose) {
@@ -1337,8 +2010,16 @@ again:
 				}
 			}
 
+			newname[0] = '\0';
+
 			error = recv_rename(hdl, fsname, tryname,
 			    strlen(tofs)+1, newname, flags);
+
+			if (renamed != NULL && newname[0] != '\0') {
+				VERIFY(0 == nvlist_add_boolean(renamed,
+				    newname));
+			}
+
 			if (error)
 				needagain = B_TRUE;
 			else
@@ -1362,42 +2043,33 @@ again:
 static int
 zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
     recvflags_t flags, dmu_replay_record_t *drr, zio_cksum_t *zc,
-    char **top_zfs)
+    char **top_zfs, int cleanup_fd, uint64_t *action_handlep)
 {
 	nvlist_t *stream_nv = NULL;
 	avl_tree_t *stream_avl = NULL;
 	char *fromsnap = NULL;
+	char *cp;
 	char tofs[ZFS_MAXNAMELEN];
+	char sendfs[ZFS_MAXNAMELEN];
 	char errbuf[1024];
 	dmu_replay_record_t drre;
 	int error;
 	boolean_t anyerr = B_FALSE;
 	boolean_t softerr = B_FALSE;
+	boolean_t recursive;
 
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 	    "cannot receive"));
 
-	if (strchr(destname, '@')) {
-		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-		    "can not specify snapshot name for multi-snapshot stream"));
-		return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
-	}
-
 	assert(drr->drr_type == DRR_BEGIN);
 	assert(drr->drr_u.drr_begin.drr_magic == DMU_BACKUP_MAGIC);
-	assert(drr->drr_u.drr_begin.drr_version == DMU_BACKUP_HEADER_VERSION);
+	assert(DMU_GET_STREAM_HDRTYPE(drr->drr_u.drr_begin.drr_versioninfo) ==
+	    DMU_COMPOUNDSTREAM);
 
 	/*
 	 * Read in the nvlist from the stream.
 	 */
 	if (drr->drr_payloadlen != 0) {
-		if (!flags.isprefix) {
-			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-			    "must use -d to receive replication "
-			    "(send -R) stream"));
-			return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
-		}
-
 		error = recv_read_nvlist(hdl, fd, drr->drr_payloadlen,
 		    &stream_nv, flags.byteswap, zc);
 		if (error) {
@@ -1406,6 +2078,16 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
 		}
 	}
 
+	recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") ==
+	    ENOENT);
+
+	if (recursive && strchr(destname, '@')) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+		    "cannot specify snapshot name for multi-snapshot stream"));
+		error = zfs_error(hdl, EZFS_BADSTREAM, errbuf);
+		goto out;
+	}
+
 	/*
 	 * Read in the end record and verify checksum.
 	 */
@@ -1449,21 +2131,73 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
 		}
 
 		if (fromsnap != NULL) {
+			nvlist_t *renamed = NULL;
+			nvpair_t *pair = NULL;
+
 			(void) strlcpy(tofs, destname, ZFS_MAXNAMELEN);
 			if (flags.isprefix) {
-				int i = strcspn(drr->drr_u.drr_begin.drr_toname,
-				    "/@");
+				struct drr_begin *drrb = &drr->drr_u.drr_begin;
+				int i;
+
+				if (flags.istail) {
+					cp = strrchr(drrb->drr_toname, '/');
+					if (cp == NULL) {
+						(void) strlcat(tofs, "/",
+						    ZFS_MAXNAMELEN);
+						i = 0;
+					} else {
+						i = (cp - drrb->drr_toname);
+					}
+				} else {
+					i = strcspn(drrb->drr_toname, "/@");
+				}
 				/* zfs_receive_one() will create_parents() */
-				(void) strlcat(tofs,
-				    &drr->drr_u.drr_begin.drr_toname[i],
+				(void) strlcat(tofs, &drrb->drr_toname[i],
 				    ZFS_MAXNAMELEN);
 				*strchr(tofs, '@') = '\0';
 			}
-			softerr = recv_incremental_replication(hdl, tofs,
-			    flags, stream_nv, stream_avl);
+
+			if (recursive && !flags.dryrun && !flags.nomount) {
+				VERIFY(0 == nvlist_alloc(&renamed,
+				    NV_UNIQUE_NAME, 0));
+			}
+
+			softerr = recv_incremental_replication(hdl, tofs, flags,
+			    stream_nv, stream_avl, renamed);
+
+			/* Unmount renamed filesystems before receiving. */
+			while ((pair = nvlist_next_nvpair(renamed,
+			    pair)) != NULL) {
+				zfs_handle_t *zhp;
+				prop_changelist_t *clp = NULL;
+
+				zhp = zfs_open(hdl, nvpair_name(pair),
+				    ZFS_TYPE_FILESYSTEM);
+				if (zhp != NULL) {
+					clp = changelist_gather(zhp,
+					    ZFS_PROP_MOUNTPOINT, 0, 0);
+					zfs_close(zhp);
+					if (clp != NULL) {
+						softerr |=
+						    changelist_prefix(clp);
+						changelist_free(clp);
+					}
+				}
+			}
+
+			nvlist_free(renamed);
 		}
 	}
 
+	/*
+	 * Get the fs specified by the first path in the stream (the top level
+	 * specified by 'zfs send') and pass it to each invocation of
+	 * zfs_receive_one().
+	 */
+	(void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname,
+	    ZFS_MAXNAMELEN);
+	if ((cp = strchr(sendfs, '@')) != NULL)
+		*cp = '\0';
 
 	/* Finally, receive each contained stream */
 	do {
@@ -1475,7 +2209,8 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
 		 * recv_skip() and return 0).
 		 */
 		error = zfs_receive_impl(hdl, destname, flags, fd,
-		    stream_avl, top_zfs);
+		    sendfs, stream_nv, stream_avl, top_zfs, cleanup_fd,
+		    action_handlep);
 		if (error == ENODATA) {
 			error = 0;
 			break;
@@ -1489,7 +2224,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
 		 * renames again.
 		 */
 		softerr = recv_incremental_replication(hdl, tofs, flags,
-		    stream_nv, stream_avl);
+		    stream_nv, stream_avl, NULL);
 	}
 
 out:
@@ -1503,11 +2238,28 @@ out:
 	return (error);
 }
 
+static void
+trunc_prop_errs(int truncated)
+{
+	ASSERT(truncated != 0);
+
+	if (truncated == 1)
+		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+		    "1 more property could not be set\n"));
+	else
+		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
+		    "%d more properties could not be set\n"), truncated);
+}
+
 static int
 recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap)
 {
 	dmu_replay_record_t *drr;
 	void *buf = malloc(1<<20);
+	char errbuf[1024];
+
+	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
+	    "cannot receive:"));
 
 	/* XXX would be great to use lseek if possible... */
 	drr = buf;
@@ -1520,7 +2272,11 @@ recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap)
 		switch (drr->drr_type) {
 		case DRR_BEGIN:
 			/* NB: not to be used on v2 stream packages */
-			assert(drr->drr_payloadlen == 0);
+			if (drr->drr_payloadlen != 0) {
+				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+				    "invalid substream header"));
+				return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
+			}
 			break;
 
 		case DRR_END:
@@ -1546,13 +2302,23 @@ recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap)
 			(void) recv_read(hdl, fd, buf,
 			    drr->drr_u.drr_write.drr_length, B_FALSE, NULL);
 			break;
-
+		case DRR_SPILL:
+			if (byteswap) {
+				drr->drr_u.drr_write.drr_length =
+				    BSWAP_64(drr->drr_u.drr_spill.drr_length);
+			}
+			(void) recv_read(hdl, fd, buf,
+			    drr->drr_u.drr_spill.drr_length, B_FALSE, NULL);
+			break;
+		case DRR_WRITE_BYREF:
 		case DRR_FREEOBJECTS:
 		case DRR_FREE:
 			break;
 
 		default:
-			assert(!"invalid record type");
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "invalid record type"));
+			return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
 		}
 	}
 
@@ -1566,27 +2332,34 @@ recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap)
 static int
 zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
     recvflags_t flags, dmu_replay_record_t *drr,
-    dmu_replay_record_t *drr_noswap, avl_tree_t *stream_avl,
-    char **top_zfs)
+    dmu_replay_record_t *drr_noswap, const char *sendfs,
+    nvlist_t *stream_nv, avl_tree_t *stream_avl, char **top_zfs, int cleanup_fd,
+    uint64_t *action_handlep)
 {
 	zfs_cmd_t zc = { 0 };
 	time_t begin_time;
-	int ioctl_err, ioctl_errno, err, choplen;
+	int ioctl_err, ioctl_errno, err;
 	char *cp;
 	struct drr_begin *drrb = &drr->drr_u.drr_begin;
 	char errbuf[1024];
-	char chopprefix[ZFS_MAXNAMELEN];
+	char prop_errbuf[1024];
+	const char *chopprefix;
 	boolean_t newfs = B_FALSE;
 	boolean_t stream_wantsnewfs;
 	uint64_t parent_snapguid = 0;
 	prop_changelist_t *clp = NULL;
 	nvlist_t *snapprops_nvlist = NULL;
+	zprop_errflags_t prop_errflags;
+	boolean_t recursive;
 
 	begin_time = time(NULL);
 
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 	    "cannot receive"));
 
+	recursive = (nvlist_lookup_boolean(stream_nv, "not_recursive") ==
+	    ENOENT);
+
 	if (stream_avl != NULL) {
 		char *snapname;
 		nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid,
@@ -1617,6 +2390,8 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 			return (-1);
 	}
 
+	cp = NULL;
+
 	/*
 	 * Determine how much of the snapshot name stored in the stream
 	 * we are going to tack on to the name they specified on the
@@ -1625,38 +2400,77 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 	 * If they specified a snapshot, chop the entire name stored in
 	 * the stream.
 	 */
-	(void) strcpy(chopprefix, drrb->drr_toname);
-	if (flags.isprefix) {
+	if (flags.istail) {
+		/*
+		 * A filesystem was specified with -e. We want to tack on only
+		 * the tail of the sent snapshot path.
+		 */
+		if (strchr(tosnap, '@')) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
+			    "argument - snapshot not allowed with -e"));
+			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
+		}
+
+		chopprefix = strrchr(sendfs, '/');
+
+		if (chopprefix == NULL) {
+			/*
+			 * The tail is the poolname, so we need to
+			 * prepend a path separator.
+			 */
+			int len = strlen(drrb->drr_toname);
+			cp = malloc(len + 2);
+			cp[0] = '/';
+			(void) strcpy(&cp[1], drrb->drr_toname);
+			chopprefix = cp;
+		} else {
+			chopprefix = drrb->drr_toname + (chopprefix - sendfs);
+		}
+	} else if (flags.isprefix) {
 		/*
-		 * They specified a fs with -d, we want to tack on
-		 * everything but the pool name stored in the stream
+		 * A filesystem was specified with -d. We want to tack on
+		 * everything but the first element of the sent snapshot path
+		 * (all but the pool name).
 		 */
 		if (strchr(tosnap, '@')) {
 			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
 			    "argument - snapshot not allowed with -d"));
 			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
 		}
-		cp = strchr(chopprefix, '/');
-		if (cp == NULL)
-			cp = strchr(chopprefix, '@');
-		*cp = '\0';
+
+		chopprefix = strchr(drrb->drr_toname, '/');
+		if (chopprefix == NULL)
+			chopprefix = strchr(drrb->drr_toname, '@');
 	} else if (strchr(tosnap, '@') == NULL) {
 		/*
-		 * If they specified a filesystem without -d, we want to
-		 * tack on everything after the fs specified in the
-		 * first name from the stream.
+		 * If a filesystem was specified without -d or -e, we want to
+		 * tack on everything after the fs specified by 'zfs send'.
 		 */
-		cp = strchr(chopprefix, '@');
-		*cp = '\0';
+		chopprefix = drrb->drr_toname + strlen(sendfs);
+	} else {
+		/* A snapshot was specified as an exact path (no -d or -e). */
+		if (recursive) {
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "cannot specify snapshot name for multi-snapshot "
+			    "stream"));
+			return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
+		}
+		chopprefix = drrb->drr_toname + strlen(drrb->drr_toname);
 	}
-	choplen = strlen(chopprefix);
+
+	ASSERT(strstr(drrb->drr_toname, sendfs) == drrb->drr_toname);
+	ASSERT(chopprefix > drrb->drr_toname);
+	ASSERT(chopprefix <= drrb->drr_toname + strlen(drrb->drr_toname));
+	ASSERT(chopprefix[0] == '/' || chopprefix[0] == '@' ||
+	    chopprefix[0] == '\0');
 
 	/*
 	 * Determine name of destination snapshot, store in zc_value.
 	 */
+	(void) strcpy(zc.zc_top_ds, tosnap);
 	(void) strcpy(zc.zc_value, tosnap);
-	(void) strncat(zc.zc_value, drrb->drr_toname+choplen,
-	    sizeof (zc.zc_value));
+	(void) strncat(zc.zc_value, chopprefix, sizeof (zc.zc_value));
+	free(cp);
 	if (!zfs_name_valid(zc.zc_value, ZFS_TYPE_SNAPSHOT)) {
 		zcmd_free_nvlists(&zc);
 		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
@@ -1714,7 +2528,14 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		(void) strcpy(zc.zc_name, zc.zc_value);
 		*strchr(zc.zc_name, '@') = '\0';
 
-		if (!zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
+		/*
+		 * If the exact receive path was specified and this is the
+		 * topmost path in the stream, then if the fs does not exist we
+		 * should look no further.
+		 */
+		if ((flags.isprefix || (*(chopprefix = drrb->drr_toname +
+		    strlen(sendfs)) != '\0' && *chopprefix != '@')) &&
+		    !zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
 			char snap[ZFS_MAXNAMELEN];
 			(void) strcpy(snap, strchr(zc.zc_value, '@'));
 			if (guid_to_name(hdl, tosnap, drrb->drr_fromguid,
@@ -1730,6 +2551,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 
 	if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
 		zfs_handle_t *zhp;
+
 		/*
 		 * Destination fs exists.  Therefore this should either
 		 * be an incremental, or the stream specifies a new fs
@@ -1737,7 +2559,6 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		 * away (and have therefore specified -F and removed any
 		 * snapshots).
 		 */
-
 		if (stream_wantsnewfs) {
 			if (!flags.force) {
 				zcmd_free_nvlists(&zc);
@@ -1780,21 +2601,17 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 			/* We can't do online recv in this case */
 			clp = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0);
 			if (clp == NULL) {
+				zfs_close(zhp);
 				zcmd_free_nvlists(&zc);
 				return (-1);
 			}
 			if (changelist_prefix(clp) != 0) {
 				changelist_free(clp);
+				zfs_close(zhp);
 				zcmd_free_nvlists(&zc);
 				return (-1);
 			}
 		}
-		if (!flags.dryrun && zhp->zfs_type == ZFS_TYPE_VOLUME &&
-		    zvol_remove_link(hdl, zhp->zfs_name) != 0) {
-			zfs_close(zhp);
-			zcmd_free_nvlists(&zc);
-			return (-1);
-		}
 		zfs_close(zhp);
 	} else {
 		/*
@@ -1818,7 +2635,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		 */
 		*cp = '\0';
 
-		if (flags.isprefix && !flags.dryrun &&
+		if (flags.isprefix && !flags.istail && !flags.dryrun &&
 		    create_parents(hdl, zc.zc_value, strlen(tosnap)) != 0) {
 			zcmd_free_nvlists(&zc);
 			return (zfs_error(hdl, EZFS_BADRESTORE, errbuf));
@@ -1843,21 +2660,61 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		return (recv_skip(hdl, infd, flags.byteswap));
 	}
 
+	zc.zc_nvlist_dst = (uint64_t)(uintptr_t)prop_errbuf;
+	zc.zc_nvlist_dst_size = sizeof (prop_errbuf);
+	zc.zc_cleanup_fd = cleanup_fd;
+	zc.zc_action_handle = *action_handlep;
+
 	err = ioctl_err = zfs_ioctl(hdl, ZFS_IOC_RECV, &zc);
 	ioctl_errno = errno;
+	prop_errflags = (zprop_errflags_t)zc.zc_obj;
+
+	if (err == 0) {
+		nvlist_t *prop_errors;
+		VERIFY(0 == nvlist_unpack((void *)(uintptr_t)zc.zc_nvlist_dst,
+		    zc.zc_nvlist_dst_size, &prop_errors, 0));
+
+		nvpair_t *prop_err = NULL;
+
+		while ((prop_err = nvlist_next_nvpair(prop_errors,
+		    prop_err)) != NULL) {
+			char tbuf[1024];
+			zfs_prop_t prop;
+			int intval;
+
+			prop = zfs_name_to_prop(nvpair_name(prop_err));
+			(void) nvpair_value_int32(prop_err, &intval);
+			if (strcmp(nvpair_name(prop_err),
+			    ZPROP_N_MORE_ERRORS) == 0) {
+				trunc_prop_errs(intval);
+				break;
+			} else {
+				(void) snprintf(tbuf, sizeof (tbuf),
+				    dgettext(TEXT_DOMAIN,
+				    "cannot receive %s property on %s"),
+				    nvpair_name(prop_err), zc.zc_name);
+				zfs_setprop_error(hdl, prop, intval, tbuf);
+			}
+		}
+		nvlist_free(prop_errors);
+	}
+
+	zc.zc_nvlist_dst = 0;
+	zc.zc_nvlist_dst_size = 0;
 	zcmd_free_nvlists(&zc);
 
 	if (err == 0 && snapprops_nvlist) {
 		zfs_cmd_t zc2 = { 0 };
 
 		(void) strcpy(zc2.zc_name, zc.zc_value);
+		zc2.zc_cookie = B_TRUE; /* received */
 		if (zcmd_write_src_nvlist(hdl, &zc2, snapprops_nvlist) == 0) {
 			(void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc2);
 			zcmd_free_nvlists(&zc2);
 		}
 	}
 
-	if (err && (ioctl_errno == ENOENT || ioctl_errno == ENODEV)) {
+	if (err && (ioctl_errno == ENOENT || ioctl_errno == EEXIST)) {
 		/*
 		 * It may be that this snapshot already exists,
 		 * in which case we want to consume & ignore it
@@ -1865,7 +2722,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		 */
 		avl_tree_t *local_avl;
 		nvlist_t *local_nv, *fs;
-		char *cp = strchr(zc.zc_value, '@');
+		cp = strchr(zc.zc_value, '@');
 
 		/*
 		 * XXX Do this faster by just iterating over snaps in
@@ -1873,7 +2730,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		 * get a strange "does not exist" error message.
 		 */
 		*cp = '\0';
-		if (gather_nvlist(hdl, zc.zc_value, NULL, NULL,
+		if (gather_nvlist(hdl, zc.zc_value, NULL, NULL, B_FALSE,
 		    &local_nv, &local_avl) == 0) {
 			*cp = '@';
 			fs = fsavl_find(local_avl, drrb->drr_toguid, NULL);
@@ -1885,14 +2742,13 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 					(void) printf("snap %s already exists; "
 					    "ignoring\n", zc.zc_value);
 				}
-				ioctl_err = recv_skip(hdl, infd,
+				err = ioctl_err = recv_skip(hdl, infd,
 				    flags.byteswap);
 			}
 		}
 		*cp = '@';
 	}
 
-
 	if (ioctl_err != 0) {
 		switch (ioctl_errno) {
 		case ENODEV:
@@ -1931,17 +2787,25 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 			    "invalid stream (checksum mismatch)"));
 			(void) zfs_error(hdl, EZFS_BADSTREAM, errbuf);
 			break;
+		case ENOTSUP:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "pool must be upgraded to receive this stream."));
+			(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
+			break;
+		case EDQUOT:
+			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+			    "destination %s space quota exceeded"), zc.zc_name);
+			(void) zfs_error(hdl, EZFS_BADRESTORE, errbuf);
+			break;
 		default:
 			(void) zfs_standard_error(hdl, ioctl_errno, errbuf);
 		}
 	}
 
 	/*
-	 * Mount or recreate the /dev links for the target filesystem
-	 * (if created, or if we tore them down to do an incremental
-	 * restore), and the /dev links for the new snapshot (if
-	 * created). Also mount any children of the target filesystem
-	 * if we did an incremental receive.
+	 * Mount the target filesystem (if created).  Also mount any
+	 * children of the target filesystem if we did a replication
+	 * receive (indicated by stream_avl being non-NULL).
 	 */
 	cp = strchr(zc.zc_value, '@');
 	if (cp && (ioctl_err == 0 || !newfs)) {
@@ -1953,11 +2817,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		if (h != NULL) {
 			if (h->zfs_type == ZFS_TYPE_VOLUME) {
 				*cp = '@';
-				err = zvol_create_link(hdl, h->zfs_name);
-				if (err == 0 && ioctl_err == 0)
-					err = zvol_create_link(hdl,
-					    zc.zc_value);
-			} else if (newfs) {
+			} else if (newfs || stream_avl) {
 				/*
 				 * Track the first/top of hierarchy fs,
 				 * for mounting and sharing later.
@@ -1975,9 +2835,24 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 		changelist_free(clp);
 	}
 
+	if (prop_errflags & ZPROP_ERR_NOCLEAR) {
+		(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: "
+		    "failed to clear unreceived properties on %s"),
+		    zc.zc_name);
+		(void) fprintf(stderr, "\n");
+	}
+	if (prop_errflags & ZPROP_ERR_NORESTORE) {
+		(void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Warning: "
+		    "failed to restore original properties on %s"),
+		    zc.zc_name);
+		(void) fprintf(stderr, "\n");
+	}
+
 	if (err || ioctl_err)
 		return (-1);
 
+	*action_handlep = zc.zc_action_handle;
+
 	if (flags.verbose) {
 		char buf1[64];
 		char buf2[64];
@@ -1997,13 +2872,16 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
 
 static int
 zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, recvflags_t flags,
-    int infd, avl_tree_t *stream_avl, char **top_zfs)
+    int infd, const char *sendfs, nvlist_t *stream_nv, avl_tree_t *stream_avl,
+    char **top_zfs, int cleanup_fd, uint64_t *action_handlep)
 {
 	int err;
 	dmu_replay_record_t drr, drr_noswap;
 	struct drr_begin *drrb = &drr.drr_u.drr_begin;
 	char errbuf[1024];
 	zio_cksum_t zcksum = { 0 };
+	uint64_t featureflags;
+	int hdrtype;
 
 	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
 	    "cannot receive"));
@@ -2041,7 +2919,7 @@ zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, recvflags_t flags,
 		drr.drr_type = BSWAP_32(drr.drr_type);
 		drr.drr_payloadlen = BSWAP_32(drr.drr_payloadlen);
 		drrb->drr_magic = BSWAP_64(drrb->drr_magic);
-		drrb->drr_version = BSWAP_64(drrb->drr_version);
+		drrb->drr_versioninfo = BSWAP_64(drrb->drr_versioninfo);
 		drrb->drr_creation_time = BSWAP_64(drrb->drr_creation_time);
 		drrb->drr_type = BSWAP_32(drrb->drr_type);
 		drrb->drr_flags = BSWAP_32(drrb->drr_flags);
@@ -2055,23 +2933,45 @@ zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, recvflags_t flags,
 		return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
 	}
 
+	featureflags = DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo);
+	hdrtype = DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo);
+
+	if (!DMU_STREAM_SUPPORTED(featureflags) ||
+	    (hdrtype != DMU_SUBSTREAM && hdrtype != DMU_COMPOUNDSTREAM)) {
+		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+		    "stream has unsupported feature, feature flags = %lx"),
+		    featureflags);
+		return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
+	}
+
 	if (strchr(drrb->drr_toname, '@') == NULL) {
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid "
 		    "stream (bad snapshot name)"));
 		return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
 	}
 
-	if (drrb->drr_version == DMU_BACKUP_STREAM_VERSION) {
+	if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == DMU_SUBSTREAM) {
+		char nonpackage_sendfs[ZFS_MAXNAMELEN];
+		if (sendfs == NULL) {
+			/*
+			 * We were not called from zfs_receive_package(). Get
+			 * the fs specified by 'zfs send'.
+			 */
+			char *cp;
+			(void) strlcpy(nonpackage_sendfs,
+			    drr.drr_u.drr_begin.drr_toname, ZFS_MAXNAMELEN);
+			if ((cp = strchr(nonpackage_sendfs, '@')) != NULL)
+				*cp = '\0';
+			sendfs = nonpackage_sendfs;
+		}
 		return (zfs_receive_one(hdl, infd, tosnap, flags,
-		    &drr, &drr_noswap, stream_avl, top_zfs));
-	} else if (drrb->drr_version == DMU_BACKUP_HEADER_VERSION) {
-		return (zfs_receive_package(hdl, infd, tosnap, flags,
-		    &drr, &zcksum, top_zfs));
+		    &drr, &drr_noswap, sendfs, stream_nv, stream_avl,
+		    top_zfs, cleanup_fd, action_handlep));
 	} else {
-		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-		    "stream is unsupported version %llu"),
-		    drrb->drr_version);
-		return (zfs_error(hdl, EZFS_BADSTREAM, errbuf));
+		assert(DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) ==
+		    DMU_COMPOUNDSTREAM);
+		return (zfs_receive_package(hdl, infd, tosnap, flags,
+		    &drr, &zcksum, top_zfs, cleanup_fd, action_handlep));
 	}
 }
 
@@ -2087,8 +2987,16 @@ zfs_receive(libzfs_handle_t *hdl, const char *tosnap, recvflags_t flags,
 {
 	char *top_zfs = NULL;
 	int err;
+	int cleanup_fd;
+	uint64_t action_handle = 0;
+
+	cleanup_fd = open(ZFS_DEV, O_RDWR|O_EXCL);
+	VERIFY(cleanup_fd >= 0);
+
+	err = zfs_receive_impl(hdl, tosnap, flags, infd, NULL, NULL,
+	    stream_avl, &top_zfs, cleanup_fd, &action_handle);
 
-	err = zfs_receive_impl(hdl, tosnap, flags, infd, stream_avl, &top_zfs);
+	VERIFY(0 == close(cleanup_fd));
 
 	if (err == 0 && !flags.nomount && top_zfs) {
 		zfs_handle_t *zhp;
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_status.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_status.c
index c7eb04e..24725ec 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_status.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_status.c
@@ -19,8 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 /*
@@ -104,6 +103,13 @@ vdev_offlined(uint64_t state, uint64_t aux, uint64_t errs)
 	return (state == VDEV_STATE_OFFLINE);
 }
 
+/* ARGSUSED */
+static int
+vdev_removed(uint64_t state, uint64_t aux, uint64_t errs)
+{
+	return (state == VDEV_STATE_REMOVED);
+}
+
 /*
  * Detect if any leaf devices that have seen errors or could not be opened.
  */
@@ -131,7 +137,7 @@ find_vdev_problem(nvlist_t *vdev, int (*func)(uint64_t, uint64_t, uint64_t))
 			if (find_vdev_problem(child[c], func))
 				return (B_TRUE);
 	} else {
-		verify(nvlist_lookup_uint64_array(vdev, ZPOOL_CONFIG_STATS,
+		verify(nvlist_lookup_uint64_array(vdev, ZPOOL_CONFIG_VDEV_STATS,
 		    (uint64_t **)&vs, &c) == 0);
 
 		if (func(vs->vs_state, vs->vs_aux,
@@ -166,7 +172,8 @@ check_status(nvlist_t *config, boolean_t isimport)
 {
 	nvlist_t *nvroot;
 	vdev_stat_t *vs;
-	uint_t vsc;
+	pool_scan_stat_t *ps = NULL;
+	uint_t vsc, psc;
 	uint64_t nerr;
 	uint64_t version;
 	uint64_t stateval;
@@ -177,15 +184,24 @@ check_status(nvlist_t *config, boolean_t isimport)
 	    &version) == 0);
 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
 	    &nvroot) == 0);
-	verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_STATS,
+	verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS,
 	    (uint64_t **)&vs, &vsc) == 0);
 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
 	    &stateval) == 0);
-	(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID, &hostid);
+
+	/*
+	 * Currently resilvering a vdev
+	 */
+	(void) nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_SCAN_STATS,
+	    (uint64_t **)&ps, &psc);
+	if (ps && ps->pss_func == POOL_SCAN_RESILVER &&
+	    ps->pss_state == DSS_SCANNING)
+		return (ZPOOL_STATUS_RESILVERING);
 
 	/*
 	 * Pool last accessed by another system.
 	 */
+	(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID, &hostid);
 	if (hostid != 0 && (unsigned long)hostid != gethostid() &&
 	    stateval == POOL_STATE_ACTIVE)
 		return (ZPOOL_STATUS_HOSTID_MISMATCH);
@@ -276,10 +292,10 @@ check_status(nvlist_t *config, boolean_t isimport)
 		return (ZPOOL_STATUS_OFFLINE_DEV);
 
 	/*
-	 * Currently resilvering
+	 * Removed device
 	 */
-	if (!vs->vs_scrub_complete && vs->vs_scrub_type == POOL_SCRUB_RESILVER)
-		return (ZPOOL_STATUS_RESILVERING);
+	if (find_vdev_problem(nvroot, vdev_removed))
+		return (ZPOOL_STATUS_REMOVED_DEV);
 
 	/*
 	 * Outdated, but usable, version
@@ -315,3 +331,68 @@ zpool_import_status(nvlist_t *config, char **msgid)
 
 	return (ret);
 }
+
+static void
+dump_ddt_stat(const ddt_stat_t *dds, int h)
+{
+	char refcnt[6];
+	char blocks[6], lsize[6], psize[6], dsize[6];
+	char ref_blocks[6], ref_lsize[6], ref_psize[6], ref_dsize[6];
+
+	if (dds == NULL || dds->dds_blocks == 0)
+		return;
+
+	if (h == -1)
+		(void) strcpy(refcnt, "Total");
+	else
+		zfs_nicenum(1ULL << h, refcnt, sizeof (refcnt));
+
+	zfs_nicenum(dds->dds_blocks, blocks, sizeof (blocks));
+	zfs_nicenum(dds->dds_lsize, lsize, sizeof (lsize));
+	zfs_nicenum(dds->dds_psize, psize, sizeof (psize));
+	zfs_nicenum(dds->dds_dsize, dsize, sizeof (dsize));
+	zfs_nicenum(dds->dds_ref_blocks, ref_blocks, sizeof (ref_blocks));
+	zfs_nicenum(dds->dds_ref_lsize, ref_lsize, sizeof (ref_lsize));
+	zfs_nicenum(dds->dds_ref_psize, ref_psize, sizeof (ref_psize));
+	zfs_nicenum(dds->dds_ref_dsize, ref_dsize, sizeof (ref_dsize));
+
+	(void) printf("%6s   %6s   %5s   %5s   %5s   %6s   %5s   %5s   %5s\n",
+	    refcnt,
+	    blocks, lsize, psize, dsize,
+	    ref_blocks, ref_lsize, ref_psize, ref_dsize);
+}
+
+/*
+ * Print the DDT histogram and the column totals.
+ */
+void
+zpool_dump_ddt(const ddt_stat_t *dds_total, const ddt_histogram_t *ddh)
+{
+	int h;
+
+	(void) printf("\n");
+
+	(void) printf("bucket   "
+	    "           allocated             "
+	    "          referenced          \n");
+	(void) printf("______   "
+	    "______________________________   "
+	    "______________________________\n");
+
+	(void) printf("%6s   %6s   %5s   %5s   %5s   %6s   %5s   %5s   %5s\n",
+	    "refcnt",
+	    "blocks", "LSIZE", "PSIZE", "DSIZE",
+	    "blocks", "LSIZE", "PSIZE", "DSIZE");
+
+	(void) printf("%6s   %6s   %5s   %5s   %5s   %6s   %5s   %5s   %5s\n",
+	    "------",
+	    "------", "-----", "-----", "-----",
+	    "------", "-----", "-----", "-----");
+
+	for (h = 0; h < 64; h++)
+		dump_ddt_stat(&ddh->ddh_stat[h], h);
+
+	dump_ddt_stat(dds_total, -1);
+
+	(void) printf("\n");
+}
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c
index ddd8374..01738fb 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c
@@ -19,14 +19,18 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 /*
  * Internal utility routines for the ZFS library.
  */
 
+#include <sys/param.h>
+#include <sys/linker.h>
+#include <sys/module.h>
+#include <sys/stat.h>
+
 #include <errno.h>
 #include <fcntl.h>
 #include <libintl.h>
@@ -46,6 +50,8 @@
 #include "libzfs_impl.h"
 #include "zfs_prop.h"
 
+int aok;
+
 int
 libzfs_errno(libzfs_handle_t *hdl)
 {
@@ -70,7 +76,7 @@ libzfs_error_description(libzfs_handle_t *hdl)
 	case EZFS_BADPROP:
 		return (dgettext(TEXT_DOMAIN, "invalid property value"));
 	case EZFS_PROPREADONLY:
-		return (dgettext(TEXT_DOMAIN, "read only property"));
+		return (dgettext(TEXT_DOMAIN, "read-only property"));
 	case EZFS_PROPTYPE:
 		return (dgettext(TEXT_DOMAIN, "property doesn't apply to "
 		    "datasets of this type"));
@@ -90,12 +96,10 @@ libzfs_error_description(libzfs_handle_t *hdl)
 	case EZFS_BADSTREAM:
 		return (dgettext(TEXT_DOMAIN, "invalid backup stream"));
 	case EZFS_DSREADONLY:
-		return (dgettext(TEXT_DOMAIN, "dataset is read only"));
+		return (dgettext(TEXT_DOMAIN, "dataset is read-only"));
 	case EZFS_VOLTOOBIG:
 		return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for "
 		    "this system"));
-	case EZFS_VOLHASDATA:
-		return (dgettext(TEXT_DOMAIN, "volume has data"));
 	case EZFS_INVALIDNAME:
 		return (dgettext(TEXT_DOMAIN, "invalid name"));
 	case EZFS_BADRESTORE:
@@ -138,16 +142,12 @@ libzfs_error_description(libzfs_handle_t *hdl)
 		return (dgettext(TEXT_DOMAIN, "smb remove share failed"));
 	case EZFS_SHARESMBFAILED:
 		return (dgettext(TEXT_DOMAIN, "smb add share failed"));
-	case EZFS_ISCSISVCUNAVAIL:
-		return (dgettext(TEXT_DOMAIN,
-		    "iscsitgt service need to be enabled by "
-		    "a privileged user"));
-	case EZFS_DEVLINKS:
-		return (dgettext(TEXT_DOMAIN, "failed to create /dev links"));
 	case EZFS_PERM:
 		return (dgettext(TEXT_DOMAIN, "permission denied"));
 	case EZFS_NOSPC:
 		return (dgettext(TEXT_DOMAIN, "out of space"));
+	case EZFS_FAULT:
+		return (dgettext(TEXT_DOMAIN, "bad address"));
 	case EZFS_IO:
 		return (dgettext(TEXT_DOMAIN, "I/O error"));
 	case EZFS_INTR:
@@ -161,12 +161,6 @@ libzfs_error_description(libzfs_handle_t *hdl)
 		return (dgettext(TEXT_DOMAIN, "recursive dataset dependency"));
 	case EZFS_NOHISTORY:
 		return (dgettext(TEXT_DOMAIN, "no history available"));
-	case EZFS_UNSHAREISCSIFAILED:
-		return (dgettext(TEXT_DOMAIN,
-		    "iscsitgtd failed request to unshare"));
-	case EZFS_SHAREISCSIFAILED:
-		return (dgettext(TEXT_DOMAIN,
-		    "iscsitgtd failed request to share"));
 	case EZFS_POOLPROPS:
 		return (dgettext(TEXT_DOMAIN, "failed to retrieve "
 		    "pool properties"));
@@ -194,9 +188,6 @@ libzfs_error_description(libzfs_handle_t *hdl)
 	case EZFS_NODELEGATION:
 		return (dgettext(TEXT_DOMAIN, "delegated administration is "
 		    "disabled on pool"));
-	case EZFS_PERMRDONLY:
-		return (dgettext(TEXT_DOMAIN, "snapshot permissions cannot be"
-		    " modified"));
 	case EZFS_BADCACHE:
 		return (dgettext(TEXT_DOMAIN, "invalid or missing cache file"));
 	case EZFS_ISL2CACHE:
@@ -213,6 +204,31 @@ libzfs_error_description(libzfs_handle_t *hdl)
 	case EZFS_UNPLAYED_LOGS:
 		return (dgettext(TEXT_DOMAIN, "log device has unplayed intent "
 		    "logs"));
+	case EZFS_REFTAG_RELE:
+		return (dgettext(TEXT_DOMAIN, "no such tag on this dataset"));
+	case EZFS_REFTAG_HOLD:
+		return (dgettext(TEXT_DOMAIN, "tag already exists on this "
+		    "dataset"));
+	case EZFS_TAGTOOLONG:
+		return (dgettext(TEXT_DOMAIN, "tag too long"));
+	case EZFS_PIPEFAILED:
+		return (dgettext(TEXT_DOMAIN, "pipe create failed"));
+	case EZFS_THREADCREATEFAILED:
+		return (dgettext(TEXT_DOMAIN, "thread create failed"));
+	case EZFS_POSTSPLIT_ONLINE:
+		return (dgettext(TEXT_DOMAIN, "disk was split from this pool "
+		    "into a new one"));
+	case EZFS_SCRUBBING:
+		return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
+		    "use 'zpool scrub -s' to cancel current scrub"));
+	case EZFS_NO_SCRUB:
+		return (dgettext(TEXT_DOMAIN, "there is no active scrub"));
+	case EZFS_DIFF:
+		return (dgettext(TEXT_DOMAIN, "unable to generate diffs"));
+	case EZFS_DIFFDATA:
+		return (dgettext(TEXT_DOMAIN, "invalid diff data"));
+	case EZFS_POOLREADONLY:
+		return (dgettext(TEXT_DOMAIN, "pool is read-only"));
 	case EZFS_UNKNOWN:
 		return (dgettext(TEXT_DOMAIN, "unknown error"));
 	default:
@@ -301,6 +317,10 @@ zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt,
 		zfs_verror(hdl, EZFS_IO, fmt, ap);
 		return (-1);
 
+	case EFAULT:
+		zfs_verror(hdl, EZFS_FAULT, fmt, ap);
+		return (-1);
+
 	case EINTR:
 		zfs_verror(hdl, EZFS_INTR, fmt, ap);
 		return (-1);
@@ -357,9 +377,7 @@ zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 		zfs_verror(hdl, EZFS_BUSY, fmt, ap);
 		break;
 	case EROFS:
-		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
-		    "snapshot permissions cannot be modified"));
-		zfs_verror(hdl, EZFS_PERMRDONLY, fmt, ap);
+		zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
 		break;
 	case ENAMETOOLONG:
 		zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap);
@@ -373,7 +391,7 @@ zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 		zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
 		break;
 	default:
-		zfs_error_aux(hdl, strerror(errno));
+		zfs_error_aux(hdl, strerror(error));
 		zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
 		break;
 	}
@@ -445,12 +463,17 @@ zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...)
 	case EDQUOT:
 		zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
 		return (-1);
+
 	case EAGAIN:
 		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 		    "pool I/O is currently suspended"));
 		zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
 		break;
 
+	case EROFS:
+		zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
+		break;
+
 	default:
 		zfs_error_aux(hdl, strerror(error));
 		zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
@@ -484,6 +507,29 @@ zfs_alloc(libzfs_handle_t *hdl, size_t size)
 }
 
 /*
+ * A safe form of asprintf() which will die if the allocation fails.
+ */
+/*PRINTFLIKE2*/
+char *
+zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...)
+{
+	va_list ap;
+	char *ret;
+	int err;
+
+	va_start(ap, fmt);
+
+	err = vasprintf(&ret, fmt, ap);
+
+	va_end(ap);
+
+	if (err < 0)
+		(void) no_memory(hdl);
+
+	return (ret);
+}
+
+/*
  * A safe form of realloc(), which also zeroes newly allocated space.
  */
 void *
@@ -573,7 +619,7 @@ libzfs_load(void)
 		/* Not present in kernel, try loading it. */
 		if (kldload("zfs") < 0 || modfind("zfs") < 0) {
 			if (errno != EEXIST)
-				return (error);
+				return (-1);
 		}
 	}
 	return (0);
@@ -584,17 +630,18 @@ libzfs_init(void)
 {
 	libzfs_handle_t *hdl;
 
-	if ((hdl = calloc(sizeof (libzfs_handle_t), 1)) == NULL) {
+	if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) {
+		return (NULL);
+	}
+
+	if (libzfs_load() < 0) {
+		free(hdl);
 		return (NULL);
 	}
 
 	if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
-		if (libzfs_load() == 0)
-			hdl->libzfs_fd = open(ZFS_DEV, O_RDWR);
-		if (hdl->libzfs_fd < 0) {
-			free(hdl);
-			return (NULL);
-		}
+		free(hdl);
+		return (NULL);
 	}
 
 	if ((hdl->libzfs_mnttab = fopen(MNTTAB, "r")) == NULL) {
@@ -624,6 +671,9 @@ libzfs_fini(libzfs_handle_t *hdl)
 	if (hdl->libzfs_log_str)
 		(void) free(hdl->libzfs_log_str);
 	zpool_free_handles(hdl);
+#ifdef sun
+	libzfs_fru_clear(hdl, B_TRUE);
+#endif
 	namespace_clear(hdl);
 	libzfs_mnttab_fini(hdl);
 	free(hdl);
@@ -656,7 +706,9 @@ zfs_get_pool_handle(const zfs_handle_t *zhp)
 zfs_handle_t *
 zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
 {
-	struct statfs statbuf;
+	struct stat64 statbuf;
+	struct extmnttab entry;
+	int ret;
 
 	if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) {
 		/*
@@ -665,18 +717,42 @@ zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
 		return (zfs_open(hdl, path, argtype));
 	}
 
-	if (statfs(path, &statbuf) != 0) {
+	if (stat64(path, &statbuf) != 0) {
 		(void) fprintf(stderr, "%s: %s\n", path, strerror(errno));
 		return (NULL);
 	}
 
-	if (strcmp(statbuf.f_fstypename, MNTTYPE_ZFS) != 0) {
+#ifdef sun
+	rewind(hdl->libzfs_mnttab);
+	while ((ret = getextmntent(hdl->libzfs_mnttab, &entry, 0)) == 0) {
+		if (makedevice(entry.mnt_major, entry.mnt_minor) ==
+		    statbuf.st_dev) {
+			break;
+		}
+	}
+#else
+	{
+		struct statfs sfs;
+
+		if (statfs(path, &sfs) != 0) {
+			(void) fprintf(stderr, "%s: %s\n", path,
+			    strerror(errno));
+			ret = -1;
+		}
+		statfs2mnttab(&sfs, &entry);
+	}
+#endif	/* sun */
+	if (ret != 0) {
+		return (NULL);
+	}
+
+	if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
 		(void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"),
 		    path);
 		return (NULL);
 	}
 
-	return (zfs_open(hdl, statbuf.f_mntfromname, ZFS_TYPE_FILESYSTEM));
+	return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM));
 }
 
 /*
@@ -687,7 +763,7 @@ int
 zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len)
 {
 	if (len == 0)
-		len = 2048;
+		len = 16 * 1024;
 	zc->zc_nvlist_dst_size = len;
 	if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
 	    zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)
@@ -813,6 +889,8 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 	    "PROPERTY"));
 	cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN,
 	    "VALUE"));
+	cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN,
+	    "RECEIVED"));
 	cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN,
 	    "SOURCE"));
 
@@ -826,7 +904,7 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 	 * inheriting from the longest name.  This is acceptable because in the
 	 * majority of cases 'SOURCE' is the last column displayed, and we don't
 	 * use the width anyway.  Note that the 'VALUE' column can be oversized,
-	 * if the name of the property is much longer the any values we find.
+	 * if the name of the property is much longer than any values we find.
 	 */
 	for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
 		/*
@@ -857,6 +935,11 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 		    pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE])
 			cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width;
 
+		/* 'RECEIVED' column. */
+		if (pl != cbp->cb_proplist &&
+		    pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD])
+			cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width;
+
 		/*
 		 * 'NAME' and 'SOURCE' columns
 		 */
@@ -872,7 +955,7 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 	/*
 	 * Now go through and print the headers.
 	 */
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < ZFS_GET_NCOLS; i++) {
 		switch (cbp->cb_columns[i]) {
 		case GET_COL_NAME:
 			title = dgettext(TEXT_DOMAIN, "NAME");
@@ -883,6 +966,9 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 		case GET_COL_VALUE:
 			title = dgettext(TEXT_DOMAIN, "VALUE");
 			break;
+		case GET_COL_RECVD:
+			title = dgettext(TEXT_DOMAIN, "RECEIVED");
+			break;
 		case GET_COL_SOURCE:
 			title = dgettext(TEXT_DOMAIN, "SOURCE");
 			break;
@@ -891,7 +977,8 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 		}
 
 		if (title != NULL) {
-			if (i == 3 || cbp->cb_columns[i + 1] == 0)
+			if (i == (ZFS_GET_NCOLS - 1) ||
+			    cbp->cb_columns[i + 1] == GET_COL_NONE)
 				(void) printf("%s", title);
 			else
 				(void) printf("%-*s  ",
@@ -909,7 +996,7 @@ zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type)
 void
 zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
     const char *propname, const char *value, zprop_source_t sourcetype,
-    const char *source)
+    const char *source, const char *recvd_value)
 {
 	int i;
 	const char *str;
@@ -924,7 +1011,7 @@ zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
 	if (cbp->cb_first)
 		zprop_print_headers(cbp, cbp->cb_type);
 
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < ZFS_GET_NCOLS; i++) {
 		switch (cbp->cb_columns[i]) {
 		case GET_COL_NAME:
 			str = name;
@@ -961,14 +1048,21 @@ zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
 				    "inherited from %s", source);
 				str = buf;
 				break;
+			case ZPROP_SRC_RECEIVED:
+				str = "received";
+				break;
 			}
 			break;
 
+		case GET_COL_RECVD:
+			str = (recvd_value == NULL ? "-" : recvd_value);
+			break;
+
 		default:
 			continue;
 		}
 
-		if (cbp->cb_columns[i + 1] == 0)
+		if (cbp->cb_columns[i + 1] == GET_COL_NONE)
 			(void) printf("%s", str);
 		else if (cbp->cb_scripted)
 			(void) printf("%s\t", str);
@@ -976,7 +1070,6 @@ zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp,
 			(void) printf("%-*s  ",
 			    cbp->cb_colwidths[cbp->cb_columns[i]],
 			    str);
-
 	}
 
 	(void) printf("\n");
@@ -1038,7 +1131,7 @@ zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num)
 		return (-1);
 	}
 
-	/* Rely on stroull() to process the numeric portion.  */
+	/* Rely on strtoull() to process the numeric portion.  */
 	errno = 0;
 	*num = strtoull(value, &end, 10);
 
diff --git a/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c b/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
index ca68ca1..2c07787 100644
--- a/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
+++ b/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
@@ -19,8 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #include <assert.h>
@@ -36,20 +35,24 @@
 #include <sys/zfs_context.h>
 #include <sys/zmod.h>
 #include <sys/utsname.h>
+#include <sys/systeminfo.h>
 
 /*
  * Emulation of kernel services in userland.
  */
 
-int hz = 119;	/* frequency when using gethrtime() >> 23 for lbolt */
+int aok;
 uint64_t physmem;
 vnode_t *rootdir = (vnode_t *)0xabcd1234;
-char hw_serial[11];
+char hw_serial[HW_HOSTID_LEN];
 
 struct utsname utsname = {
 	"userland", "libzpool", "1", "1", "na"
 };
 
+/* this only exists to have its address taken */
+struct proc p0;
+
 /*
  * =========================================================================
  * threads
@@ -137,7 +140,7 @@ mutex_tryenter(kmutex_t *mp)
 {
 	ASSERT(mp->initialized == B_TRUE);
 	ASSERT(mp->m_owner != (void *)-1UL);
-	if (mutex_trylock(&mp->m_lock) == 0) {
+	if (0 == mutex_trylock(&mp->m_lock)) {
 		ASSERT(mp->m_owner == NULL);
 		mp->m_owner = curthread;
 		return (1);
@@ -150,7 +153,7 @@ void
 mutex_exit(kmutex_t *mp)
 {
 	ASSERT(mp->initialized == B_TRUE);
-	ASSERT(mp->m_owner == curthread);
+	ASSERT(mutex_owner(mp) == curthread);
 	mp->m_owner = NULL;
 	VERIFY(mutex_unlock(&mp->m_lock) == 0);
 }
@@ -308,9 +311,9 @@ cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime)
 	struct timeval tv;
 	clock_t delta;
 
-	abstime += lbolt;
+	abstime += ddi_get_lbolt();
 top:
-	delta = abstime - lbolt;
+	delta = abstime - ddi_get_lbolt();
 	if (delta <= 0)
 		return (-1);
 
@@ -432,10 +435,7 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3)
 	*vpp = vp = umem_zalloc(sizeof (vnode_t), UMEM_NOFAIL);
 
 	vp->v_fd = fd;
-	if (S_ISCHR(st.st_mode))
-		ioctl(fd, DIOCGMEDIASIZE, &vp->v_size);
-	else
-		vp->v_size = st.st_size;
+	vp->v_size = st.st_size;
 	vp->v_path = spa_strdup(path);
 
 	return (0);
@@ -497,6 +497,24 @@ vn_close(vnode_t *vp, int openflag, cred_t *cr, kthread_t *td)
 	umem_free(vp, sizeof (vnode_t));
 }
 
+/*
+ * At a minimum we need to update the size since vdev_reopen()
+ * will no longer call vn_openat().
+ */
+int
+fop_getattr(vnode_t *vp, vattr_t *vap)
+{
+	struct stat64 st;
+
+	if (fstat64(vp->v_fd, &st) == -1) {
+		close(vp->v_fd);
+		return (errno);
+	}
+
+	vap->va_size = st.st_size;
+	return (0);
+}
+
 #ifdef ZFS_DEBUG
 
 /*
@@ -811,6 +829,17 @@ ddi_strtoul(const char *hw_serial, char **nptr, int base, unsigned long *result)
 	return (0);
 }
 
+int
+ddi_strtoull(const char *str, char **nptr, int base, u_longlong_t *result)
+{
+	char *end;
+
+	*result = strtoull(str, &end, base);
+	if (*result == 0)
+		return (errno);
+	return (0);
+}
+
 /*
  * =========================================================================
  * kernel emulation setup & teardown
@@ -836,8 +865,8 @@ kernel_init(int mode)
 	dprintf("physmem = %llu pages (%.2f GB)\n", physmem,
 	    (double)physmem * sysconf(_SC_PAGE_SIZE) / (1ULL << 30));
 
-	snprintf(hw_serial, sizeof (hw_serial), "%lu",
-	    (unsigned long)gethostid());
+	(void) snprintf(hw_serial, sizeof (hw_serial), "%lu",
+	    (mode & FWRITE) ? (unsigned long)gethostid() : 0);
 
 	VERIFY((random_fd = open("/dev/random", O_RDONLY)) != -1);
 	VERIFY((urandom_fd = open("/dev/urandom", O_RDONLY)) != -1);
@@ -852,6 +881,8 @@ kernel_fini(void)
 {
 	spa_fini();
 
+	system_taskq_fini();
+
 	close(random_fd);
 	close(urandom_fd);
 
@@ -942,3 +973,72 @@ ksiddomain_rele(ksiddomain_t *ksid)
 	spa_strfree(ksid->kd_name);
 	umem_free(ksid, sizeof (ksiddomain_t));
 }
+
+/*
+ * Do not change the length of the returned string; it must be freed
+ * with strfree().
+ */
+char *
+kmem_asprintf(const char *fmt, ...)
+{
+	int size;
+	va_list adx;
+	char *buf;
+
+	va_start(adx, fmt);
+	size = vsnprintf(NULL, 0, fmt, adx) + 1;
+	va_end(adx);
+
+	buf = kmem_alloc(size, KM_SLEEP);
+
+	va_start(adx, fmt);
+	size = vsnprintf(buf, size, fmt, adx);
+	va_end(adx);
+
+	return (buf);
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_fd_hold(int fd, minor_t *minorp)
+{
+	*minorp = 0;
+	return (0);
+}
+
+/* ARGSUSED */
+void
+zfs_onexit_fd_rele(int fd)
+{
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_add_cb(minor_t minor, void (*func)(void *), void *data,
+    uint64_t *action_handle)
+{
+	return (0);
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_del_cb(minor_t minor, uint64_t action_handle, boolean_t fire)
+{
+	return (0);
+}
+
+/* ARGSUSED */
+int
+zfs_onexit_cb_data(minor_t minor, uint64_t action_handle, void **data)
+{
+	return (0);
+}
+
+#ifdef __FreeBSD__
+/* ARGSUSED */
+int
+zvol_create_minors(const char *name)
+{
+	return (0);
+}
+#endif
diff --git a/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h b/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h
index 942c836..472cf7b 100644
--- a/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h
+++ b/cddl/contrib/opensolaris/lib/libzpool/common/sys/zfs_context.h
@@ -19,8 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #ifndef _SYS_ZFS_CONTEXT_H
@@ -59,6 +58,7 @@ extern "C" {
 #include <time.h>
 #include <math.h>
 #include <umem.h>
+#include <inttypes.h>
 #include <fsshare.h>
 #include <sys/note.h>
 #include <sys/types.h>
@@ -80,7 +80,9 @@ extern "C" {
 #include <sys/u8_textprep.h>
 #include <sys/kernel.h>
 #include <sys/disk.h>
+#include <sys/sysevent.h>
 #include <sys/sysevent/eventdefs.h>
+#include <sys/sysevent/dev.h>
 #include <machine/atomic.h>
 
 #define	ZFS_EXPORTS_PATH	"/etc/zfs/exports"
@@ -119,20 +121,27 @@ extern void vpanic(const char *, __va_list);
 
 #define	fm_panic	panic
 
+extern int aok;
+
 /* This definition is copied from assert.h. */
 #if defined(__STDC__)
 #if __STDC_VERSION__ - 0 >= 199901L
-#define	verify(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
+#define	zverify(EX) (void)((EX) || (aok) || \
+	(__assert(#EX, __FILE__, __LINE__), 0))
 #else
-#define	verify(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
+#define	zverify(EX) (void)((EX) || (aok) || \
+	(__assert(#EX, __FILE__, __LINE__), 0))
 #endif /* __STDC_VERSION__ - 0 >= 199901L */
 #else
-#define	verify(EX) (void)((EX) || (_assert("EX", __FILE__, __LINE__), 0))
+#define	zverify(EX) (void)((EX) || (aok) || \
+	(_assert("EX", __FILE__, __LINE__), 0))
 #endif	/* __STDC__ */
 
 
-#define	VERIFY	verify
-#define	ASSERT	assert
+#define	VERIFY	zverify
+#define	ASSERT	zverify
+#undef	assert
+#define	assert	zverify
 
 extern void __assert(const char *, const char *, int);
 
@@ -143,7 +152,7 @@ extern void __assert(const char *, const char *, int);
 #define	VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
 	const TYPE __left = (TYPE)(LEFT); \
 	const TYPE __right = (TYPE)(RIGHT); \
-	if (!(__left OP __right)) { \
+	if (!(__left OP __right) && (!aok)) { \
 		char *__buf = alloca(256); \
 		(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
 			#LEFT, #OP, #RIGHT, \
@@ -209,6 +218,18 @@ typedef struct kthread kthread_t;
 #define	thread_create(stk, stksize, func, arg, len, pp, state, pri)	\
 	zk_thread_create(func, arg)
 #define	thread_exit() thr_exit(NULL)
+#define	thread_join(t)	panic("libzpool cannot join threads")
+
+#define	newproc(f, a, cid, pri, ctp, pid)	(ENOSYS)
+
+/* in libzpool, p0 exists only to have its address taken */
+struct proc {
+	uintptr_t	this_is_never_used_dont_dereference_it;
+};
+
+extern struct proc p0;
+
+#define	PS_NONE		-1
 
 extern kthread_t *zk_thread_create(void (*func)(), void *arg);
 
@@ -225,8 +246,11 @@ typedef struct kmutex {
 } kmutex_t;
 
 #define	MUTEX_DEFAULT	USYNC_THREAD
-#undef MUTEX_HELD
+#undef	MUTEX_HELD
+#undef	MUTEX_NOT_HELD
 #define	MUTEX_HELD(m)	((m)->m_owner == curthread)
+#define	MUTEX_NOT_HELD(m) (!MUTEX_HELD(m))
+#define	_mutex_held(m)	pthread_mutex_isowned_np(m)
 
 /*
  * Argh -- we have to get cheesy here because the kernel and userland
@@ -234,6 +258,7 @@ typedef struct kmutex {
  */
 //extern int _mutex_init(mutex_t *mp, int type, void *arg);
 //extern int _mutex_destroy(mutex_t *mp);
+//extern int _mutex_owned(mutex_t *mp);
 
 #define	mutex_init(mp, b, c, d)		zmutex_init((kmutex_t *)(mp))
 #define	mutex_destroy(mp)		zmutex_destroy((kmutex_t *)(mp))
@@ -305,6 +330,7 @@ extern void cv_broadcast(kcondvar_t *cv);
 #define	KM_PUSHPAGE		KM_SLEEP
 #define	KM_NOSLEEP		UMEM_DEFAULT
 #define	KMC_NODEBUG		UMC_NODEBUG
+#define	KMC_NOTOUCH		0	/* not needed for userland caches */
 #define	kmem_alloc(_s, _f)	umem_alloc(_s, _f)
 #define	kmem_zalloc(_s, _f)	umem_zalloc(_s, _f)
 #define	kmem_free(_b, _s)	umem_free(_b, _s)
@@ -315,10 +341,21 @@ extern void cv_broadcast(kcondvar_t *cv);
 #define	kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
 #define	kmem_cache_free(_c, _b)	umem_cache_free(_c, _b)
 #define	kmem_debugging()	0
-#define	kmem_cache_reap_now(c)
+#define	kmem_cache_reap_now(_c)		/* nothing */
+#define	kmem_cache_set_move(_c, _cb)	/* nothing */
+#define	POINTER_INVALIDATE(_pp)		/* nothing */
+#define	POINTER_IS_VALID(_p)	0
 
 typedef umem_cache_t kmem_cache_t;
 
+typedef enum kmem_cbrc {
+	KMEM_CBRC_YES,
+	KMEM_CBRC_NO,
+	KMEM_CBRC_LATER,
+	KMEM_CBRC_DONT_NEED,
+	KMEM_CBRC_DONT_KNOW
+} kmem_cbrc_t;
+
 /*
  * Task queues
  */
@@ -329,23 +366,30 @@ typedef void (task_func_t)(void *);
 #define	TASKQ_PREPOPULATE	0x0001
 #define	TASKQ_CPR_SAFE		0x0002	/* Use CPR safe protocol */
 #define	TASKQ_DYNAMIC		0x0004	/* Use dynamic thread scheduling */
-#define	TASKQ_THREADS_CPU_PCT	0x0008	/* Use dynamic thread scheduling */
+#define	TASKQ_THREADS_CPU_PCT	0x0008	/* Scale # threads by # cpus */
+#define	TASKQ_DC_BATCH		0x0010	/* Mark threads as batch */
 
 #define	TQ_SLEEP	KM_SLEEP	/* Can block for memory */
 #define	TQ_NOSLEEP	KM_NOSLEEP	/* cannot block for memory; may fail */
-#define	TQ_NOQUEUE	0x02	/* Do not enqueue if can't dispatch */
+#define	TQ_NOQUEUE	0x02		/* Do not enqueue if can't dispatch */
+#define	TQ_FRONT	0x08		/* Queue in front */
 
 extern taskq_t *system_taskq;
 
 extern taskq_t	*taskq_create(const char *, int, pri_t, int, int, uint_t);
+#define	taskq_create_proc(a, b, c, d, e, p, f) \
+	    (taskq_create(a, b, c, d, e, f))
+#define	taskq_create_sysdc(a, b, d, e, p, dc, f) \
+	    (taskq_create(a, b, maxclsyspri, d, e, f))
 extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
 extern void	taskq_destroy(taskq_t *);
 extern void	taskq_wait(taskq_t *);
 extern int	taskq_member(taskq_t *, void *);
 extern void	system_taskq_init(void);
+extern void	system_taskq_fini(void);
 
-#define	taskq_dispatch_safe(tq, func, arg, task)			\
-	taskq_dispatch((tq), (func), (arg), TQ_SLEEP)
+#define	taskq_dispatch_safe(tq, func, arg, flags, task)			\
+	taskq_dispatch((tq), (func), (arg), (flags))
 
 #define	XVA_MAPSIZE	3
 #define	XVA_MAGIC	0x78766174
@@ -359,6 +403,7 @@ typedef struct vnode {
 	char		*v_path;
 } vnode_t;
 
+#define	AV_SCANSTAMP_SZ	32		/* length of anti-virus scanstamp */
 
 typedef struct xoptattr {
 	timestruc_t	xoa_createtime;	/* Create time of file */
@@ -374,6 +419,10 @@ typedef struct xoptattr {
 	uint8_t		xoa_opaque;
 	uint8_t		xoa_av_quarantined;
 	uint8_t		xoa_av_modified;
+	uint8_t		xoa_av_scanstamp[AV_SCANSTAMP_SZ];
+	uint8_t		xoa_reparse;
+	uint8_t		xoa_offline;
+	uint8_t		xoa_sparse;
 } xoptattr_t;
 
 typedef struct vattr {
@@ -420,13 +469,15 @@ typedef struct vsecattr {
 
 #define	CRCREAT		0
 
+extern int fop_getattr(vnode_t *vp, vattr_t *vap);
+
 #define	VOP_CLOSE(vp, f, c, o, cr, ct)	0
 #define	VOP_PUTPAGE(vp, of, sz, fl, cr, ct)	0
-#define	VOP_GETATTR(vp, vap, cr)	((vap)->va_size = (vp)->v_size, 0)
+#define	VOP_GETATTR(vp, vap, cr)  fop_getattr((vp), (vap));
 
 #define	VOP_FSYNC(vp, f, cr, ct)	fsync((vp)->v_fd)
 
-#define	VN_RELE(vp)	vn_close(vp, 0, NULL, NULL)
+#define	VN_RELE(vp)			vn_close(vp, 0, NULL, NULL)
 #define	VN_RELE_ASYNC(vp, taskq)	vn_close(vp, 0, NULL, NULL)
 
 #define	vn_lock(vp, type)
@@ -460,13 +511,18 @@ extern vnode_t *rootdir;
 /*
  * Random stuff
  */
-#define	lbolt	(gethrtime() >> 23)
-#define	lbolt64	(gethrtime() >> 23)
-//#define	hz	119	/* frequency when using gethrtime() >> 23 for lbolt */
+#define	ddi_get_lbolt()		(gethrtime() >> 23)
+#define	ddi_get_lbolt64()	(gethrtime() >> 23)
+#define	hz	119	/* frequency when using gethrtime() >> 23 for lbolt */
 
 extern void delay(clock_t ticks);
 
 #define	gethrestime_sec() time(NULL)
+#define	gethrestime(t) \
+	do {\
+		(t)->tv_sec = gethrestime_sec();\
+		(t)->tv_nsec = 0;\
+	} while (0);
 
 #define	max_ncpus	64
 
@@ -475,6 +531,9 @@ extern void delay(clock_t ticks);
 
 #define	CPU_SEQID	(thr_self() & (max_ncpus - 1))
 
+#define	kcred		NULL
+#define	CRED()		NULL
+
 #ifndef ptob
 #define	ptob(x)		((x) * PAGESIZE)
 #endif
@@ -516,14 +575,20 @@ typedef struct callb_cpr {
 #define	zone_dataset_visible(x, y)	(1)
 #define	INGLOBALZONE(z)			(1)
 
+extern char *kmem_asprintf(const char *fmt, ...);
+#define	strfree(str) kmem_free((str), strlen(str)+1)
+
 /*
  * Hostname information
  */
 extern struct utsname utsname;
-extern char hw_serial[];
+extern char hw_serial[];	/* for userland-emulated hostid access */
 extern int ddi_strtoul(const char *str, char **nptr, int base,
     unsigned long *result);
 
+extern int ddi_strtoull(const char *str, char **nptr, int base,
+    u_longlong_t *result);
+
 /* ZFS Boot Related stuff. */
 
 struct _buf {
@@ -563,7 +628,6 @@ extern zoneid_t getzoneid(void);
 #define	lbolt	(gethrtime() >> 23)
 #define	lbolt64	(gethrtime() >> 23)
 
-extern int hz;
 extern uint64_t physmem;
 
 #define	gethrestime_sec()	time(NULL)
@@ -593,6 +657,9 @@ void ksiddomain_rele(ksiddomain_t *);
 
 typedef	uint32_t	idmap_rid_t;
 
+#define	DDI_SLEEP	KM_SLEEP
+#define	ddi_log_sysevent(_a, _b, _c, _d, _e, _f, _g)	(0)
+
 #define	SX_SYSINIT(name, lock, desc)
 
 #define	SYSCTL_DECL(...)
diff --git a/cddl/contrib/opensolaris/lib/libzpool/common/taskq.c b/cddl/contrib/opensolaris/lib/libzpool/common/taskq.c
index 1a73fe8..8db5d11 100644
--- a/cddl/contrib/opensolaris/lib/libzpool/common/taskq.c
+++ b/cddl/contrib/opensolaris/lib/libzpool/common/taskq.c
@@ -19,7 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -49,6 +49,8 @@ struct taskq {
 	int		tq_nalloc;
 	int		tq_minalloc;
 	int		tq_maxalloc;
+	kcondvar_t	tq_maxalloc_cv;
+	int		tq_maxalloc_wait;
 	task_t		*tq_freelist;
 	task_t		tq_task;
 };
@@ -57,26 +59,36 @@ static task_t *
 task_alloc(taskq_t *tq, int tqflags)
 {
 	task_t *t;
+	int rv;
 
-	if ((t = tq->tq_freelist) != NULL && tq->tq_nalloc >= tq->tq_minalloc) {
+again:	if ((t = tq->tq_freelist) != NULL && tq->tq_nalloc >= tq->tq_minalloc) {
 		tq->tq_freelist = t->task_next;
 	} else {
-		mutex_exit(&tq->tq_lock);
 		if (tq->tq_nalloc >= tq->tq_maxalloc) {
-			if (!(tqflags & KM_SLEEP)) {
-				mutex_enter(&tq->tq_lock);
+			if (!(tqflags & KM_SLEEP))
 				return (NULL);
-			}
+
 			/*
 			 * We don't want to exceed tq_maxalloc, but we can't
 			 * wait for other tasks to complete (and thus free up
 			 * task structures) without risking deadlock with
 			 * the caller.  So, we just delay for one second
-			 * to throttle the allocation rate.
+			 * to throttle the allocation rate. If we have tasks
+			 * complete before one second timeout expires then
+			 * taskq_ent_free will signal us and we will
+			 * immediately retry the allocation.
 			 */
-			delay(hz);
+			tq->tq_maxalloc_wait++;
+			rv = cv_timedwait(&tq->tq_maxalloc_cv,
+			    &tq->tq_lock, ddi_get_lbolt() + hz);
+			tq->tq_maxalloc_wait--;
+			if (rv > 0)
+				goto again;		/* signaled */
 		}
+		mutex_exit(&tq->tq_lock);
+
 		t = kmem_alloc(sizeof (task_t), tqflags);
+
 		mutex_enter(&tq->tq_lock);
 		if (t != NULL)
 			tq->tq_nalloc++;
@@ -96,6 +108,9 @@ task_free(taskq_t *tq, task_t *t)
 		kmem_free(t, sizeof (task_t));
 		mutex_enter(&tq->tq_lock);
 	}
+
+	if (tq->tq_maxalloc_wait)
+		cv_signal(&tq->tq_maxalloc_cv);
 }
 
 taskqid_t
@@ -114,8 +129,13 @@ taskq_dispatch(taskq_t *tq, task_func_t func, void *arg, uint_t tqflags)
 		mutex_exit(&tq->tq_lock);
 		return (0);
 	}
-	t->task_next = &tq->tq_task;
-	t->task_prev = tq->tq_task.task_prev;
+	if (tqflags & TQ_FRONT) {
+		t->task_next = tq->tq_task.task_next;
+		t->task_prev = &tq->tq_task;
+	} else {
+		t->task_next = &tq->tq_task;
+		t->task_prev = tq->tq_task.task_prev;
+	}
 	t->task_next->task_prev = t;
 	t->task_prev->task_next = t;
 	t->task_func = func;
@@ -191,6 +211,7 @@ taskq_create(const char *name, int nthreads, pri_t pri,
 	mutex_init(&tq->tq_lock, NULL, MUTEX_DEFAULT, NULL);
 	cv_init(&tq->tq_dispatch_cv, NULL, CV_DEFAULT, NULL);
 	cv_init(&tq->tq_wait_cv, NULL, CV_DEFAULT, NULL);
+	cv_init(&tq->tq_maxalloc_cv, NULL, CV_DEFAULT, NULL);
 	tq->tq_flags = flags | TASKQ_ACTIVE;
 	tq->tq_active = nthreads;
 	tq->tq_nthreads = nthreads;
@@ -247,6 +268,7 @@ taskq_destroy(taskq_t *tq)
 	mutex_destroy(&tq->tq_lock);
 	cv_destroy(&tq->tq_dispatch_cv);
 	cv_destroy(&tq->tq_wait_cv);
+	cv_destroy(&tq->tq_maxalloc_cv);
 
 	kmem_free(tq, sizeof (taskq_t));
 }
@@ -272,3 +294,10 @@ system_taskq_init(void)
 	system_taskq = taskq_create("system_taskq", 64, minclsyspri, 4, 512,
 	    TASKQ_DYNAMIC | TASKQ_PREPOPULATE);
 }
+
+void
+system_taskq_fini(void)
+{
+	taskq_destroy(system_taskq);
+	system_taskq = NULL; /* defensive */
+}
diff --git a/cddl/contrib/opensolaris/lib/libzpool/common/util.c b/cddl/contrib/opensolaris/lib/libzpool/common/util.c
index 781edb6..9b99531 100644
--- a/cddl/contrib/opensolaris/lib/libzpool/common/util.c
+++ b/cddl/contrib/opensolaris/lib/libzpool/common/util.c
@@ -19,8 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #include <assert.h>
@@ -90,7 +89,7 @@ show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent)
 		if (is_log)
 			prefix = "log ";
 
-		if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_STATS,
+		if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
 		    (uint64_t **)&vs, &c) != 0)
 			vs = &v0;
 
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/__init__.py b/cddl/contrib/opensolaris/lib/pyzfs/common/__init__.py
index f4b0f53..76b0998 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/__init__.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/__init__.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,8 +19,7 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 """
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/allow.py b/cddl/contrib/opensolaris/lib/pyzfs/common/allow.py
index d3a03c7..fa8209f 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/allow.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/allow.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,8 +19,7 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 """This module implements the "zfs allow" and "zfs unallow" subcommands.
@@ -204,8 +203,8 @@ def args_to_perms(parser, options, who, perms):
 perms_subcmd = dict(
     create=_("Must also have the 'mount' ability"),
     destroy=_("Must also have the 'mount' ability"),
-    snapshot=_("Must also have the 'mount' ability"),
-    rollback=_("Must also have the 'mount' ability"),
+    snapshot="",
+    rollback="",
     clone=_("""Must also have the 'create' ability and 'mount'
 \t\t\t\tability in the origin file system"""),
     promote=_("""Must also have the 'mount'
@@ -217,6 +216,9 @@ perms_subcmd = dict(
     mount=_("Allows mount/umount of ZFS datasets"),
     share=_("Allows sharing file systems over NFS or SMB\n\t\t\t\tprotocols"),
     send="",
+    hold=_("Allows adding a user hold to a snapshot"),
+    release=_("Allows releasing a user hold which\n\t\t\t\tmight destroy the snapshot"),
+    diff=_("Allows lookup of paths within a dataset,\n\t\t\t\tgiven an object number. Ordinary users need this\n\t\t\t\tin order to use zfs diff"),
 )
 
 perms_other = dict(
@@ -265,7 +267,7 @@ def print_perms():
 			print(fmt % (name, _("property"), ""))
 
 def do_allow():
-	"""Implementes the "zfs allow" and "zfs unallow" subcommands."""
+	"""Implements the "zfs allow" and "zfs unallow" subcommands."""
 	un = (sys.argv[1] == "unallow")
 
 	def usage(msg=None):
@@ -320,7 +322,7 @@ def do_allow():
 		if sys.argv[2] == "-h":
 			# hack to make "zfs allow -h" work
 			usage()
-		ds = zfs.dataset.Dataset(sys.argv[2])
+		ds = zfs.dataset.Dataset(sys.argv[2], snaps=False)
 
 		p = dict()
 		for (fs, raw) in ds.get_fsacl().items():
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/dataset.py b/cddl/contrib/opensolaris/lib/pyzfs/common/dataset.py
index b45173e..26192e4 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/dataset.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/dataset.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,8 +19,7 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 """Implements the Dataset class, providing methods for manipulating ZFS
@@ -109,7 +108,7 @@ class Dataset(object):
 
 		types is an iterable of strings specifying which types
 		of datasets are permitted.  Accepted strings are
-		"filesystem" and "volume".  Defaults to acceptying all
+		"filesystem" and "volume".  Defaults to accepting all
 		types.
 
 		snaps is a boolean specifying if snapshots are acceptable.
@@ -203,3 +202,33 @@ class Dataset(object):
 		Return a dict("whostr": { "perm" -> None })."""
 
 		return zfs.ioctl.get_fsacl(self.name)
+
+	def get_holds(self):
+		"""Get the user holds on this Dataset.
+
+		Return a dict("tag": timestamp)."""
+
+		return zfs.ioctl.get_holds(self.name)
+
+def snapshots_fromcmdline(dsnames, recursive):
+	for dsname in dsnames:
+		if not "@" in dsname:
+			raise zfs.util.ZFSError(errno.EINVAL,
+			    _("cannot open %s") % dsname,
+			    _("operation only applies to snapshots"))
+		try:
+			ds = Dataset(dsname)
+			yield ds
+		except zfs.util.ZFSError, e:
+			if not recursive or e.errno != errno.ENOENT:
+				raise
+		if recursive:
+			(base, snapname) = dsname.split('@')
+			parent = Dataset(base)
+			for child in parent.descendents():
+				try:
+					yield Dataset(child.name + "@" +
+					    snapname)
+				except zfs.util.ZFSError, e:
+					if e.errno != errno.ENOENT:
+						raise
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/groupspace.py b/cddl/contrib/opensolaris/lib/pyzfs/common/groupspace.py
index 7db4bf3..9f380fd 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/groupspace.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/groupspace.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,8 +19,7 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 import zfs.userspace
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/holds.py b/cddl/contrib/opensolaris/lib/pyzfs/common/holds.py
new file mode 100644
index 0000000..800e28f
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/holds.py
@@ -0,0 +1,75 @@
+#! /usr/bin/python2.6
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+#
+
+"""This module implements the "zfs holds" subcommand.
+The only public interface is the zfs.holds.do_holds() function."""
+
+import optparse
+import sys
+import errno
+import time
+import zfs.util
+import zfs.dataset
+import zfs.table
+
+_ = zfs.util._
+
+def do_holds():
+	"""Implements the "zfs holds" subcommand."""
+	def usage(msg=None):
+		parser.print_help()
+		if msg:
+			print
+			parser.exit("zfs: error: " + msg)
+		else:
+			parser.exit()
+
+	u = _("""holds [-r] <snapshot> ...""")
+
+	parser = optparse.OptionParser(usage=u, prog="zfs")
+
+	parser.add_option("-r", action="store_true", dest="recursive",
+	    help=_("list holds recursively"))
+
+	(options, args) = parser.parse_args(sys.argv[2:])
+
+	if len(args) < 1:
+		usage(_("missing snapshot argument"))
+
+	fields = ("name", "tag", "timestamp")
+	rjustfields = ()
+	printing = False 
+	gotone = False
+	t = zfs.table.Table(fields, rjustfields) 
+	for ds in zfs.dataset.snapshots_fromcmdline(args, options.recursive):
+		gotone = True
+		for tag, tm in ds.get_holds().iteritems():
+			val = {"name": ds.name, "tag": tag,
+			    "timestamp": time.ctime(tm)}
+			t.addline(ds.name, val)
+			printing = True
+	if printing:
+		t.printme()
+	elif not gotone:
+		raise zfs.util.ZFSError(errno.ENOENT, _("no matching datasets"))
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/ioctl.c b/cddl/contrib/opensolaris/lib/pyzfs/common/ioctl.c
index 4571147..d1f82a7 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/ioctl.c
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/ioctl.c
@@ -19,7 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -29,8 +29,6 @@
 #include <strings.h>
 #include <unistd.h>
 #include <libnvpair.h>
-#include <idmap.h>
-#include <zone.h>
 #include <libintl.h>
 #include <libzfs.h>
 #include <libzfs_impl.h>
@@ -45,10 +43,6 @@ static int zfsdevfd;
 
 #define	_(s) dgettext(TEXT_DOMAIN, s)
 
-#ifdef sun
-extern int sid_to_id(char *sid, boolean_t user, uid_t *id);
-#endif	/* sun */
-
 /*PRINTFLIKE1*/
 static void
 seterr(char *fmt, ...)
@@ -66,7 +60,7 @@ seterr(char *fmt, ...)
 static char cmdstr[HIS_MAX_RECORD_LEN];
 
 static int
-ioctl_with_cmdstr(unsigned long ioc, zfs_cmd_t *zc)
+ioctl_with_cmdstr(int ioc, zfs_cmd_t *zc)
 {
 	int err;
 
@@ -138,8 +132,7 @@ dict2nvl(PyObject *d)
 	nvlist_t *nvl;
 	int err;
 	PyObject *key, *value;
-//	int pos = 0;
-	Py_ssize_t pos = 0;
+	int pos = 0;
 
 	if (!PyDict_Check(d)) {
 		PyErr_SetObject(PyExc_ValueError, d);
@@ -205,7 +198,7 @@ add_ds_props(zfs_cmd_t *zc, PyObject *nvl)
 
 /* On error, returns NULL but does not set python exception. */
 static PyObject *
-ioctl_with_dstnv(unsigned long ioc, zfs_cmd_t *zc)
+ioctl_with_dstnv(int ioc, zfs_cmd_t *zc)
 {
 	int nvsz = 2048;
 	void *nvbuf;
@@ -236,7 +229,7 @@ again:
 static PyObject *
 py_next_dataset(PyObject *self, PyObject *args)
 {
-	unsigned long ioc;
+	int ioc;
 	uint64_t cookie;
 	zfs_cmd_t zc = { 0 };
 	int snaps;
@@ -353,6 +346,25 @@ py_set_fsacl(PyObject *self, PyObject *args)
 }
 
 static PyObject *
+py_get_holds(PyObject *self, PyObject *args)
+{
+	zfs_cmd_t zc = { 0 };
+	char *name;
+	PyObject *nvl;
+
+	if (!PyArg_ParseTuple(args, "s", &name))
+		return (NULL);
+
+	(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
+
+	nvl = ioctl_with_dstnv(ZFS_IOC_GET_HOLDS, &zc);
+	if (nvl == NULL)
+		seterr(_("cannot get holds for %s"), name);
+
+	return (nvl);
+}
+
+static PyObject *
 py_userspace_many(PyObject *self, PyObject *args)
 {
 	zfs_cmd_t zc = { 0 };
@@ -440,80 +452,6 @@ py_userspace_upgrade(PyObject *self, PyObject *args)
 }
 
 static PyObject *
-py_sid_to_id(PyObject *self, PyObject *args)
-{
-#ifdef sun
-	char *sid;
-	int err, isuser;
-	uid_t id;
-
-	if (!PyArg_ParseTuple(args, "si", &sid, &isuser))
-		return (NULL);
-
-	err = sid_to_id(sid, isuser, &id);
-	if (err) {
-		PyErr_SetString(PyExc_KeyError, sid);
-		return (NULL);
-	}
-
-	return (Py_BuildValue("I", id));
-#else	/* sun */
-	return (NULL);
-#endif	/* sun */
-}
-
-/*
- * Translate the sid string ("S-1-...") to the user@domain name, if
- * possible.  There should be a better way to do this, but for now we
- * just translate to the (possibly ephemeral) uid and then back again.
- */
-static PyObject *
-py_sid_to_name(PyObject *self, PyObject *args)
-{
-#ifdef sun
-	char *sid;
-	int err, isuser;
-	uid_t id;
-	char *name, *domain;
-	char buf[256];
-
-	if (!PyArg_ParseTuple(args, "si", &sid, &isuser))
-		return (NULL);
-
-	err = sid_to_id(sid, isuser, &id);
-	if (err) {
-		PyErr_SetString(PyExc_KeyError, sid);
-		return (NULL);
-	}
-
-	if (isuser) {
-		err = idmap_getwinnamebyuid(id,
-		    IDMAP_REQ_FLG_USE_CACHE, &name, &domain);
-	} else {
-		err = idmap_getwinnamebygid(id,
-		    IDMAP_REQ_FLG_USE_CACHE, &name, &domain);
-	}
-	if (err != IDMAP_SUCCESS) {
-		PyErr_SetString(PyExc_KeyError, sid);
-		return (NULL);
-	}
-	(void) snprintf(buf, sizeof (buf), "%s@%s", name, domain);
-	free(name);
-	free(domain);
-
-	return (Py_BuildValue("s", buf));
-#else	/* sun */
-	return(NULL);
-#endif	/* sun */
-}
-
-static PyObject *
-py_isglobalzone(PyObject *self, PyObject *args)
-{
-	return (Py_BuildValue("i", getzoneid() == GLOBAL_ZONEID));
-}
-
-static PyObject *
 py_set_cmdstr(PyObject *self, PyObject *args)
 {
 	char *str;
@@ -584,12 +522,7 @@ static PyMethodDef zfsmethods[] = {
 	    "Get dataset properties."},
 	{"get_proptable", py_get_proptable, METH_NOARGS,
 	    "Get property table."},
-	/* Below are not really zfs-specific: */
-	{"sid_to_id", py_sid_to_id, METH_VARARGS, "Map SID to UID/GID."},
-	{"sid_to_name", py_sid_to_name, METH_VARARGS,
-	    "Map SID to name@domain."},
-	{"isglobalzone", py_isglobalzone, METH_NOARGS,
-	    "Determine if this is the global zone."},
+	{"get_holds", py_get_holds, METH_VARARGS, "Get user holds."},
 	{NULL, NULL, 0, NULL}
 };
 
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/table.py b/cddl/contrib/opensolaris/lib/pyzfs/common/table.py
new file mode 100644
index 0000000..d2a45a1
--- /dev/null
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/table.py
@@ -0,0 +1,70 @@
+#! /usr/bin/python2.6
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
+#
+
+import zfs.util
+
+class Table:
+	__slots__ = "fields", "rjustfields", "maxfieldlen", "lines"
+	__repr__ = zfs.util.default_repr
+
+	def __init__(self, fields, rjustfields=()):
+		# XXX maybe have a defaults, too?
+		self.fields = fields
+		self.rjustfields = rjustfields
+		self.maxfieldlen = dict.fromkeys(fields, 0)
+		self.lines = list()
+	
+	def __updatemax(self, k, v):
+		self.maxfieldlen[k] = max(self.maxfieldlen.get(k, None), v)
+
+	def addline(self, sortkey, values):
+		"""values is a dict from field name to value"""
+
+		va = list()
+		for f in self.fields:
+			v = str(values[f])
+			va.append(v)
+			self.__updatemax(f, len(v))
+		self.lines.append((sortkey, va))
+
+	def printme(self, headers=True):
+		if headers:
+			d = dict([(f, f.upper()) for f in self.fields])
+			self.addline(None, d)
+
+		self.lines.sort()
+		for (k, va) in self.lines:
+			line = str()
+			for i in range(len(self.fields)):
+				if not headers:
+					line += va[i]
+					line += "\t"
+				else:
+					if self.fields[i] in self.rjustfields:
+						fmt = "%*s  "
+					else:
+						fmt = "%-*s  "
+					mfl = self.maxfieldlen[self.fields[i]]
+					line += fmt % (mfl, va[i])
+			print(line)
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/unallow.py b/cddl/contrib/opensolaris/lib/pyzfs/common/unallow.py
index 1458dc1..cbdd4dd 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/unallow.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/unallow.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,8 +19,7 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 import zfs.allow
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/userspace.py b/cddl/contrib/opensolaris/lib/pyzfs/common/userspace.py
index c269d51..33646bc 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/userspace.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/userspace.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,21 +19,22 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 """This module implements the "zfs userspace" and "zfs groupspace" subcommands.
 The only public interface is the zfs.userspace.do_userspace() function."""
 
-import zfs.util
-import zfs.ioctl
-import zfs.dataset
 import optparse
 import sys
 import pwd
 import grp
 import errno
+import solaris.misc
+import zfs.util
+import zfs.ioctl
+import zfs.dataset
+import zfs.table
 
 _ = zfs.util._
 
@@ -58,9 +59,6 @@ def skiptype(options, prop):
 		return True
 	return False
 
-def updatemax(d, k, v):
-	d[k] = max(d.get(k, None), v)
-
 def new_entry(options, isgroup, domain, rid):
 	"""Return a dict("field": value) for this domain (string) + rid (int)"""
 
@@ -70,9 +68,9 @@ def new_entry(options, isgroup, domain, rid):
 		idstr = "%u" % rid
 
 	(typename, mapfunc) = {
-	    (1, 1): ("SMB Group",   lambda id: zfs.ioctl.sid_to_name(id, 0)),
+	    (1, 1): ("SMB Group",   lambda id: solaris.misc.sid_to_name(id, 0)),
 	    (1, 0): ("POSIX Group", lambda id: grp.getgrgid(int(id)).gr_name),
-	    (0, 1): ("SMB User",    lambda id: zfs.ioctl.sid_to_name(id, 1)),
+	    (0, 1): ("SMB User",    lambda id: solaris.misc.sid_to_name(id, 1)),
 	    (0, 0): ("POSIX User",  lambda id: pwd.getpwuid(int(id)).pw_name)
 	}[isgroup, bool(domain)]
 
@@ -102,8 +100,8 @@ def new_entry(options, isgroup, domain, rid):
 	v["quota.sort"] = 0
 	return v
 
-def process_one_raw(acct, maxfieldlen, options, prop, elem):
-	"""Update the acct and maxfieldlen dicts to incorporate the
+def process_one_raw(acct, options, prop, elem):
+	"""Update the acct dict to incorporate the
 	information from this elem from Dataset.userspace(prop)."""
 
 	(domain, rid, value) = elem
@@ -111,7 +109,7 @@ def process_one_raw(acct, maxfieldlen, options, prop, elem):
 
 	if options.translate and domain:
 		try:
-			rid = zfs.ioctl.sid_to_id("%s-%u" % (domain, rid),
+			rid = solaris.misc.sid_to_id("%s-%u" % (domain, rid),
 			    not isgroup)
 			domain = None
 		except KeyError:
@@ -134,10 +132,6 @@ def process_one_raw(acct, maxfieldlen, options, prop, elem):
 		v[field] = str(value)
 	else:
 		v[field] = zfs.util.nicenum(value)
-	for k in v.keys():
-		# some of the .sort fields are integers, so have no len()
-		if isinstance(v[k], str):
-			updatemax(maxfieldlen, k, len(v[k]))
 
 def do_userspace():
 	"""Implements the "zfs userspace" and "zfs groupspace" subcommands."""
@@ -156,7 +150,7 @@ def do_userspace():
 		defaulttypes = "posixgroup,smbgroup"
 
 	fields = ("type", "name", "used", "quota")
-	ljustfields = ("type", "name")
+	rjustfields = ("used", "quota")
 	types = ("all", "posixuser", "smbuser", "posixgroup", "smbgroup")
 
 	u = _("%s [-niHp] [-o field[,...]] [-sS field] ... \n") % sys.argv[1]
@@ -209,38 +203,23 @@ def do_userspace():
 
 	ds = zfs.dataset.Dataset(dsname, types=("filesystem"))
 
-	if ds.getprop("jailed") and zfs.ioctl.isglobalzone():
+	if ds.getprop("jailed") and solaris.misc.isglobalzone():
 		options.noname = True
 
 	if not ds.getprop("useraccounting"):
 		print(_("Initializing accounting information on old filesystem, please wait..."))
 		ds.userspace_upgrade()
 
-	acct = dict()
-	maxfieldlen = dict()
-
 	# gather and process accounting information
+	# Due to -i, we need to keep a dict, so we can potentially add
+	# together the posix ID and SID's usage.  Grr.
+	acct = dict()
 	for prop in props.keys():
 		if skiptype(options, prop):
 			continue;
 		for elem in ds.userspace(prop):
-			process_one_raw(acct, maxfieldlen, options, prop, elem)
-
-	# print out headers
-	if not options.noheaders:
-		line = str()
-		for field in options.fields:
-			# make sure the field header will fit
-			updatemax(maxfieldlen, field, len(field))
-
-			if field in ljustfields:
-				fmt = "%-*s  "
-			else:
-				fmt = "%*s  "
-			line += fmt % (maxfieldlen[field], field.upper())
-		print(line)
-
-	# custom sorting func
+			process_one_raw(acct, options, prop, elem)
+
 	def cmpkey(val):
 		l = list()
 		for (opt, field) in options.sortfields:
@@ -261,17 +240,7 @@ def do_userspace():
 			l.append(n)
 		return l
 
-	# print out data lines
-	for val in sorted(acct.itervalues(), key=cmpkey):
-		line = str()
-		for field in options.fields:
-			if options.noheaders:
-				line += val[field]
-				line += "\t"
-			else:
-				if field in ljustfields:
-					fmt = "%-*s  "
-				else:
-					fmt = "%*s  "
-				line += fmt % (maxfieldlen[field], val[field])
-		print(line)
+	t = zfs.table.Table(options.fields, rjustfields)
+	for val in acct.itervalues():
+		t.addline(cmpkey(val), val)
+	t.printme(not options.noheaders)
diff --git a/cddl/contrib/opensolaris/lib/pyzfs/common/util.py b/cddl/contrib/opensolaris/lib/pyzfs/common/util.py
index 14d05a8..a33c669 100644
--- a/cddl/contrib/opensolaris/lib/pyzfs/common/util.py
+++ b/cddl/contrib/opensolaris/lib/pyzfs/common/util.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python2.4
+#! /usr/bin/python2.6
 #
 # CDDL HEADER START
 #
@@ -19,8 +19,7 @@
 #
 # CDDL HEADER END
 #
-# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
-# Use is subject to license terms.
+# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
 #
 
 """This module provides utility functions for ZFS.
@@ -29,6 +28,7 @@ zfs.util.dev -- a file object of /dev/zfs """
 import gettext
 import errno
 import os
+import solaris.misc
 # Note: this module (zfs.util) should not import zfs.ioctl, because that
 # would introduce a circular dependency
 
@@ -37,8 +37,11 @@ errno.ENOTSUP = 48
 
 dev = open("/dev/zfs", "w")
 
-_ = gettext.translation("SUNW_OST_OSLIB", "/usr/lib/locale",
-    fallback=True).gettext
+try:
+	_ = gettext.translation("SUNW_OST_OSLIB", "/usr/lib/locale",
+	    fallback=True).gettext
+except:
+	_ = solaris.misc.gettext
 
 def default_repr(self):
 	"""A simple __repr__ function."""