MFH

Sponsored by:	The FreeBSD Foundation

108 files changed, 2478 insertions, 2007 deletions

diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index a5a7e3c..f49544e 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -38,6 +38,8 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20160223: functionality from mkulzma(1) merged into mkuzip(1)
+OLD_FILES+=usr/bin/mkulzma
 # 20160211: Remove obsolete unbound-control-setup
 OLD_FILES+=usr/sbin/unbound-control-setup
 # 20160116: Update mandoc to cvs snapshot 20160116
diff --git a/bin/sh/input.c b/bin/sh/input.c
index 27b835a..3292f99 100644
--- a/bin/sh/input.c
+++ b/bin/sh/input.c
@@ -242,7 +242,8 @@ again:
 		parsenleft = parselleft;
 		parselleft = 0;
 	} else /* *q == '\n' */ {
-		parsenleft = q - parsenextc + 1;
+		q++;
+		parsenleft = q - parsenextc;
 		parselleft -= parsenleft;
 	}
 	parsenleft--;
diff --git a/bin/sh/tests/parser/Makefile b/bin/sh/tests/parser/Makefile
index bdbd6ca..4f823b0 100644
--- a/bin/sh/tests/parser/Makefile
+++ b/bin/sh/tests/parser/Makefile
@@ -82,6 +82,7 @@ FILES+=		only-redir2.0
 FILES+=		only-redir3.0
 FILES+=		only-redir4.0
 FILES+=		pipe-not1.0
+FILES+=		set-v1.0 set-v1.0.stderr
 FILES+=		var-assign1.0
 
 .include <bsd.test.mk>
diff --git a/bin/sh/tests/parser/set-v1.0 b/bin/sh/tests/parser/set-v1.0
new file mode 100644
index 0000000..687cb83
--- /dev/null
+++ b/bin/sh/tests/parser/set-v1.0
@@ -0,0 +1,8 @@
+# $FreeBSD$
+
+${SH} <<\EOF
+echo one >&2
+set -v
+echo two >&2
+echo three >&2
+EOF
diff --git a/bin/sh/tests/parser/set-v1.0.stderr b/bin/sh/tests/parser/set-v1.0.stderr
new file mode 100644
index 0000000..d904fa5
--- /dev/null
+++ b/bin/sh/tests/parser/set-v1.0.stderr
@@ -0,0 +1,5 @@
+one
+echo two >&2
+two
+echo three >&2
+three
diff --git a/etc/defaults/rc.conf b/etc/defaults/rc.conf
index b9c6b5c..12bf3f2 100644
--- a/etc/defaults/rc.conf
+++ b/etc/defaults/rc.conf
@@ -253,6 +253,7 @@ hostapd_enable="NO"		# Run hostap daemon.
 syslogd_enable="YES"		# Run syslog daemon (or NO).
 syslogd_program="/usr/sbin/syslogd" # path to syslogd, if you want a different one.
 syslogd_flags="-s"		# Flags to syslogd (if enabled).
+syslogd_oomprotect="YES"	# Don't kill syslogd when swap space is exhausted. 
 altlog_proglist=""		# List of chrooted applicatioins in /var
 inetd_enable="NO"		# Run the network daemon dispatcher (YES/NO).
 inetd_program="/usr/sbin/inetd"	# path to inetd, if you want a different one.
diff --git a/etc/rc.subr b/etc/rc.subr
index a6de452..cdec9a2 100644
--- a/etc/rc.subr
+++ b/etc/rc.subr
@@ -45,6 +45,7 @@ _rc_subr_loaded="YES"
 SYSCTL="/sbin/sysctl"
 SYSCTL_N="${SYSCTL} -n"
 SYSCTL_W="${SYSCTL}"
+PROTECT="/usr/bin/protect"
 ID="/usr/bin/id"
 IDCMD="if [ -x $ID ]; then $ID -un; fi"
 PS="/bin/ps -ww"
@@ -755,6 +756,8 @@ check_startmsgs()
 #
 #	${name}_nice	n	Nice level to run ${command} at.
 #
+#	${name}_oomprotect n	Don't kill ${command} when swap space is exhausted.
+#
 #	${name}_user	n	User to run ${command} as, using su(1) if not
 #				using ${name}_chroot.
 #				Requires /usr to be mounted.
@@ -944,7 +947,8 @@ run_rc_command()
 	    _nice=\$${name}_nice	_user=\$${name}_user \
 	    _group=\$${name}_group	_groups=\$${name}_groups \
 	    _fib=\$${name}_fib		_env=\$${name}_env \
-	    _prepend=\$${name}_prepend	_login_class=\${${name}_login_class:-daemon}
+	    _prepend=\$${name}_prepend	_login_class=\${${name}_login_class:-daemon} \
+	    _oomprotect=\$${name}_oomprotect
 
 	if [ -n "$_user" ]; then	# unset $_user if running as that user
 		if [ "$_user" = "$(eval $IDCMD)" ]; then
@@ -1182,6 +1186,26 @@ $command $rc_flags $command_args"
 			;;
 
 		esac
+
+		# Apply protect(1) to the PID if ${name}_oomprotect is set.
+		case "$rc_arg" in
+		start)
+			if [ -n "$_oomprotect" ]; then
+				if [ -f "${PROTECT}" ]; then
+					pid=$(check_process $command)
+					case $_oomprotect in
+					[Aa][Ll][Ll])
+						${PROTECT} -i -p ${pid}
+						;;
+					[Yy][Ee][Ss])
+						${PROTECT} -p ${pid}
+						;;
+					esac
+				fi
+			fi	
+		;;
+		esac
+
 		return $_return
 	done
 
diff --git a/lib/libsysdecode/Makefile b/lib/libsysdecode/Makefile
index 75a9e31..742c513 100644
--- a/lib/libsysdecode/Makefile
+++ b/lib/libsysdecode/Makefile
@@ -5,15 +5,17 @@
 PACKAGE=lib${LIB}
 LIB=	sysdecode
 
-SRCS=	ioctl.c syscallnames.c utrace.c
+SRCS=	errno.c ioctl.c syscallnames.c utrace.c
 INCS=	sysdecode.h
 
 CFLAGS+= -I${.CURDIR}/../../sys
 
 MAN+=	sysdecode.3 \
+	sysdecode_abi_to_freebsd_errno.3 \
 	sysdecode_ioctlname.3 \
 	sysdecode_syscallnames.3 \
 	sysdecode_utrace.3
+MLINKS+= sysdecode_abi_to_freebsd_errno.3 sysdecode_freebsd_to_abi_errno.3
 
 CLEANFILES= ioctl.c
 
diff --git a/lib/libsysdecode/errno.c b/lib/libsysdecode/errno.c
new file mode 100644
index 0000000..1e863bb
--- /dev/null
+++ b/lib/libsysdecode/errno.c
@@ -0,0 +1,209 @@
+/*-
+ * Copyright (c) 2015 John H. Baldwin <jhb@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <sysdecode.h>
+
+#if defined(__i386__) || defined(__amd64__)
+/*
+ * Linux syscalls return negative errno's, we do positive and map them
+ * Reference:
+ *   FreeBSD: src/sys/sys/errno.h
+ *   Linux:   linux-2.6.17.8/include/asm-generic/errno-base.h
+ *            linux-2.6.17.8/include/asm-generic/errno.h
+ */
+static int bsd_to_linux_errno[ELAST + 1] = {
+	-0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
+	-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
+	-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
+	-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
+	-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
+	-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
+	-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
+	-116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
+	  -6,  -6, -43, -42, -75,-125, -84, -95, -16, -74,
+	 -72, -67, -71
+};
+#endif
+
+#if defined(__aarch64__) || defined(__amd64__)
+#include <compat/cloudabi/cloudabi_syscalldefs.h>
+
+static const int cloudabi_errno_table[] = {
+	[CLOUDABI_E2BIG]		= E2BIG,
+	[CLOUDABI_EACCES]		= EACCES,
+	[CLOUDABI_EADDRINUSE]		= EADDRINUSE,
+	[CLOUDABI_EADDRNOTAVAIL]	= EADDRNOTAVAIL,
+	[CLOUDABI_EAFNOSUPPORT]		= EAFNOSUPPORT,
+	[CLOUDABI_EAGAIN]		= EAGAIN,
+	[CLOUDABI_EALREADY]		= EALREADY,
+	[CLOUDABI_EBADF]		= EBADF,
+	[CLOUDABI_EBADMSG]		= EBADMSG,
+	[CLOUDABI_EBUSY]		= EBUSY,
+	[CLOUDABI_ECANCELED]		= ECANCELED,
+	[CLOUDABI_ECHILD]		= ECHILD,
+	[CLOUDABI_ECONNABORTED]		= ECONNABORTED,
+	[CLOUDABI_ECONNREFUSED]		= ECONNREFUSED,
+	[CLOUDABI_ECONNRESET]		= ECONNRESET,
+	[CLOUDABI_EDEADLK]		= EDEADLK,
+	[CLOUDABI_EDESTADDRREQ]		= EDESTADDRREQ,
+	[CLOUDABI_EDOM]			= EDOM,
+	[CLOUDABI_EDQUOT]		= EDQUOT,
+	[CLOUDABI_EEXIST]		= EEXIST,
+	[CLOUDABI_EFAULT]		= EFAULT,
+	[CLOUDABI_EFBIG]		= EFBIG,
+	[CLOUDABI_EHOSTUNREACH]		= EHOSTUNREACH,
+	[CLOUDABI_EIDRM]		= EIDRM,
+	[CLOUDABI_EILSEQ]		= EILSEQ,
+	[CLOUDABI_EINPROGRESS]		= EINPROGRESS,
+	[CLOUDABI_EINTR]		= EINTR,
+	[CLOUDABI_EINVAL]		= EINVAL,
+	[CLOUDABI_EIO]			= EIO,
+	[CLOUDABI_EISCONN]		= EISCONN,
+	[CLOUDABI_EISDIR]		= EISDIR,
+	[CLOUDABI_ELOOP]		= ELOOP,
+	[CLOUDABI_EMFILE]		= EMFILE,
+	[CLOUDABI_EMLINK]		= EMLINK,
+	[CLOUDABI_EMSGSIZE]		= EMSGSIZE,
+	[CLOUDABI_EMULTIHOP]		= EMULTIHOP,
+	[CLOUDABI_ENAMETOOLONG]		= ENAMETOOLONG,
+	[CLOUDABI_ENETDOWN]		= ENETDOWN,
+	[CLOUDABI_ENETRESET]		= ENETRESET,
+	[CLOUDABI_ENETUNREACH]		= ENETUNREACH,
+	[CLOUDABI_ENFILE]		= ENFILE,
+	[CLOUDABI_ENOBUFS]		= ENOBUFS,
+	[CLOUDABI_ENODEV]		= ENODEV,
+	[CLOUDABI_ENOENT]		= ENOENT,
+	[CLOUDABI_ENOEXEC]		= ENOEXEC,
+	[CLOUDABI_ENOLCK]		= ENOLCK,
+	[CLOUDABI_ENOLINK]		= ENOLINK,
+	[CLOUDABI_ENOMEM]		= ENOMEM,
+	[CLOUDABI_ENOMSG]		= ENOMSG,
+	[CLOUDABI_ENOPROTOOPT]		= ENOPROTOOPT,
+	[CLOUDABI_ENOSPC]		= ENOSPC,
+	[CLOUDABI_ENOSYS]		= ENOSYS,
+	[CLOUDABI_ENOTCONN]		= ENOTCONN,
+	[CLOUDABI_ENOTDIR]		= ENOTDIR,
+	[CLOUDABI_ENOTEMPTY]		= ENOTEMPTY,
+	[CLOUDABI_ENOTRECOVERABLE]	= ENOTRECOVERABLE,
+	[CLOUDABI_ENOTSOCK]		= ENOTSOCK,
+	[CLOUDABI_ENOTSUP]		= ENOTSUP,
+	[CLOUDABI_ENOTTY]		= ENOTTY,
+	[CLOUDABI_ENXIO]		= ENXIO,
+	[CLOUDABI_EOVERFLOW]		= EOVERFLOW,
+	[CLOUDABI_EOWNERDEAD]		= EOWNERDEAD,
+	[CLOUDABI_EPERM]		= EPERM,
+	[CLOUDABI_EPIPE]		= EPIPE,
+	[CLOUDABI_EPROTO]		= EPROTO,
+	[CLOUDABI_EPROTONOSUPPORT]	= EPROTONOSUPPORT,
+	[CLOUDABI_EPROTOTYPE]		= EPROTOTYPE,
+	[CLOUDABI_ERANGE]		= ERANGE,
+	[CLOUDABI_EROFS]		= EROFS,
+	[CLOUDABI_ESPIPE]		= ESPIPE,
+	[CLOUDABI_ESRCH]		= ESRCH,
+	[CLOUDABI_ESTALE]		= ESTALE,
+	[CLOUDABI_ETIMEDOUT]		= ETIMEDOUT,
+	[CLOUDABI_ETXTBSY]		= ETXTBSY,
+	[CLOUDABI_EXDEV]		= EXDEV,
+	[CLOUDABI_ENOTCAPABLE]		= ENOTCAPABLE,
+};
+#endif
+
+int
+sysdecode_abi_to_freebsd_errno(enum sysdecode_abi abi, int error)
+{
+
+	switch (abi) {
+	case SYSDECODE_ABI_FREEBSD:
+	case SYSDECODE_ABI_FREEBSD32:
+		return (error);
+#if defined(__i386__) || defined(__amd64__)
+	case SYSDECODE_ABI_LINUX:
+	case SYSDECODE_ABI_LINUX32: {
+		unsigned int i;
+
+		/*
+		 * This is imprecise since it returns the first
+		 * matching errno.
+		 */
+		for (i = 0; i < nitems(bsd_to_linux_errno); i++) {
+			if (error == bsd_to_linux_errno[i])
+				return (i);
+		}
+		break;
+	}
+#endif
+#if defined(__aarch64__) || defined(__amd64__)
+	case SYSDECODE_ABI_CLOUDABI64:
+		if (error >= 0 &&
+		    (unsigned int)error < nitems(cloudabi_errno_table))
+			return (cloudabi_errno_table[error]);
+		break;
+#endif
+	default:
+		break;
+	}
+	return (INT_MAX);
+}
+
+int
+sysdecode_freebsd_to_abi_errno(enum sysdecode_abi abi, int error)
+{
+
+	switch (abi) {
+	case SYSDECODE_ABI_FREEBSD:
+	case SYSDECODE_ABI_FREEBSD32:
+		return (error);
+#if defined(__i386__) || defined(__amd64__)
+	case SYSDECODE_ABI_LINUX:
+	case SYSDECODE_ABI_LINUX32:
+		if (error >= 0 && error <= ELAST)
+			return (bsd_to_linux_errno[error]);
+		break;
+#endif
+#if defined(__aarch64__) || defined(__amd64__)
+	case SYSDECODE_ABI_CLOUDABI64: {
+		unsigned int i;
+
+		for (i = 0; i < nitems(cloudabi_errno_table); i++) {
+			if (error == cloudabi_errno_table[i])
+				return (i);
+		}
+		break;
+	}
+#endif
+	default:
+		break;
+	}
+	return (INT_MAX);
+}
+
diff --git a/lib/libsysdecode/sysdecode.3 b/lib/libsysdecode/sysdecode.3
index f058f59..ab7e972 100644
--- a/lib/libsysdecode/sysdecode.3
+++ b/lib/libsysdecode/sysdecode.3
@@ -64,6 +64,7 @@ Supported on aarch64 and amd64.
 A placeholder for use when the ABI is not known.
 .El
 .Sh SEE ALSO
+.Xr sysdecode_abi_to_freebsd_errno 3 ,
 .Xr sysdecode_ioctlname 3 ,
 .Xr sysdecode_syscallnames 3 ,
 .Xr sysdecode_utrace 3
diff --git a/lib/libsysdecode/sysdecode.h b/lib/libsysdecode/sysdecode.h
index fa00716..8a30206 100644
--- a/lib/libsysdecode/sysdecode.h
+++ b/lib/libsysdecode/sysdecode.h
@@ -38,6 +38,8 @@ enum sysdecode_abi {
 	SYSDECODE_ABI_CLOUDABI64
 };
 
+int	sysdecode_abi_to_freebsd_errno(enum sysdecode_abi _abi, int _error);
+int	sysdecode_freebsd_to_abi_errno(enum sysdecode_abi _abi, int _error);
 const char *sysdecode_ioctlname(unsigned long _val);
 const char *sysdecode_syscallname(enum sysdecode_abi _abi, unsigned int _code);
 int	sysdecode_utrace(FILE *_fp, void *_buf, size_t _len);
diff --git a/lib/libsysdecode/sysdecode_abi_to_freebsd_errno.3 b/lib/libsysdecode/sysdecode_abi_to_freebsd_errno.3
new file mode 100644
index 0000000..74826f8
--- /dev/null
+++ b/lib/libsysdecode/sysdecode_abi_to_freebsd_errno.3
@@ -0,0 +1,94 @@
+.\"
+.\" Copyright (c) 2016 John Baldwin <jhb@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 23, 2016
+.Dt sysdecode_abi_to_freebsd_errno 3
+.Os
+.Sh NAME
+.Nm sysdecode_abi_to_freebsd_errno ,
+.Nm sysdecode_freebsd_to_abi_errno
+.Nd translate error numbers between process ABIs
+.Sh LIBRARY
+.Lb libsysdecode
+.Sh SYNOPSIS
+.Ft int
+.Fn sysdecode_abi_to_freebsd_errno "enum sysdecode_abi abi" "int error"
+.Ft int
+.Fn sysdecode_freebsd_to_abi_errno "enum sysdecode_abi abi" "int error"
+.Sh DESCRIPTION
+The
+.Fn sysdecode_abi_to_freebsd_errno
+function returns the native
+.Xr errno 3
+value that corresponds to the error indicated by
+.Fa error
+for the process ABI
+.Fa abi .
+If
+.Fa error
+does not identify a valid error for
+.Fa abi ,
+.Dv INT_MAX
+is returned.
+.Pp
+The
+.Fn sysdecode_freebsd_to_abi_errno
+function the error value for the process ABI
+.Fa abi
+that corresponds to the native
+.Xr errno 3
+value
+.Fa error .
+If
+.Fa error
+does not identify a valid
+.Xr errno 3
+error,
+.Dv INT_MAX
+is returned.
+.Pp
+Note that the mappings between native
+.Xr errno 3
+values and errors for other ABIs are not exhaustive.
+If a mapping does not exist,
+these functions return
+.Dv INT_MAX .
+In addition, multiple error values in one ABI may map to a single
+error in another ABI.
+.Sh RETURN VALUES
+These functions return an error value on success or
+.Dv INT_MAX
+if
+.Fa error
+is not valid.
+.Pp
+For the list of supported ABIs,
+see
+.Xr sysdecode 3 .
+.Sh SEE ALSO
+.Xr sysdecode 3 ,
+.Xr sysdecode_syscallnames 3
diff --git a/lib/libsysdecode/sysdecode_syscallnames.3 b/lib/libsysdecode/sysdecode_syscallnames.3
index 1c75ab6..e920edb 100644
--- a/lib/libsysdecode/sysdecode_syscallnames.3
+++ b/lib/libsysdecode/sysdecode_syscallnames.3
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 24, 2016
+.Dd January 30, 2016
 .Dt sysdecode_syscallnames 3
 .Os
 .Sh NAME
@@ -64,4 +64,5 @@ or
 .Fa ABI
 is invalid .
 .Sh SEE ALSO
-.Xr sysdecode 3
+.Xr sysdecode 3 ,
+.Xr sysdecode_abi_to_freebsd_errno 3
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index f9c3adb..3d87773 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -167,7 +167,6 @@ MAN=	aac.4 \
 	geom_fox.4 \
 	geom_linux_lvm.4 \
 	geom_map.4 \
-	geom_uncompress.4 \
 	geom_uzip.4 \
 	gif.4 \
 	gpio.4 \
diff --git a/share/man/man4/geom_map.4 b/share/man/man4/geom_map.4
index 47b2aa8..b84f90a 100644
--- a/share/man/man4/geom_map.4
+++ b/share/man/man4/geom_map.4
@@ -78,7 +78,7 @@ or by using
 0 DISK cfid0 8388608 4 hd 0 sc 0
 1 MAP map/config 131072 4 i 5 o 8257536 entry 0 dsize 131072
 1 MAP map/rootfs 6881280 4 i 4 o 1376256 entry 0 dsize 6881280
-2 UNCOMPRESS map/rootfs.uncompress 18677760 512
+2 UZIP map/rootfs.uzip 18677760 512
 1 MAP map/kernel 1114112 4 i 3 o 262144 entry 0 dsize 1114112
 1 MAP map/upgrade 7995392 4 i 2 o 262144 entry 0 dsize 7995392
 1 MAP map/factory 65536 4 i 1 o 196608 entry 0 dsize 65536
diff --git a/share/man/man4/geom_uncompress.4 b/share/man/man4/geom_uncompress.4
deleted file mode 100644
index af12d27..0000000
--- a/share/man/man4/geom_uncompress.4
+++ /dev/null
@@ -1,118 +0,0 @@
-.\" Copyright (c) 2006, Ceri Davies <ceri@FreeBSD.org>
-.\" Copyright (c) 2014, Luiz Otavio O Souza <loos@FreeBSD.org>
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd January 9, 2014
-.Dt GEOM_UNCOMPRESS 4
-.Os
-.Sh NAME
-.Nm geom_uncompress
-.Nd "GEOM based compressed disk images"
-.Sh SYNOPSIS
-To compile this driver into the kernel, place the following line in your
-kernel configuration file:
-.Bd -ragged -offset indent
-.Cd "options GEOM_UNCOMPRESS"
-.Ed
-.Pp
-Alternatively, to load the driver as a module at boot time, place the
-following line in
-.Xr loader.conf 5 :
-.Bd -literal -offset indent
-geom_uncompress_load="YES"
-.Ed
-.Sh DESCRIPTION
-The
-.Nm
-framework provides support for compressed read-only disk images.
-This allows significant storage savings at the expense of a little CPU
-time on each read.
-Data written in the GEOM label area allows
-.Nm
-to detect compressed images which have been created with
-.Xr mkulzma 8
-or
-.Xr mkuzip 8
-and presented to the kernel as a logical disk device via
-.Xr md 4 .
-.Nm
-creates a unique
-.Pa md#.uncompress
-device for each image.
-.Pp
-The
-.Nm
-device is subsequently used by the
-.Fx
-kernel to access the disk images.
-The
-.Nm
-driver does not allow write operations to the underlying disk image.
-To check which
-.Xr md 4
-devices match a given
-.Nm
-device:
-.Bd -literal -offset indent
-# geom uncompress list
-Geom name: md0.uncompress
-Providers:
-1. Name: md0.uncompress
-   Mediasize: 52428800 (50M)
-   Sectorsize: 512
-   Mode: r1w0e0
-Consumers:
-1. Name: md0
-   Mediasize: 20864000 (20M)
-   Sectorsize: 512
-   Mode: r1w0e0
-.Ed
-.Sh SEE ALSO
-.Xr GEOM 4 ,
-.Xr md 4 ,
-.Xr geom 8 ,
-.Xr mkulzma 8 ,
-.Xr mkuzip 8
-.Sh AUTHORS
-.An -nosplit
-The
-.Nm
-driver was written by
-.An Max Khon Aq Mt fjoe@FreeBSD.org
-as
-.Xr geom_uzip 4 .
-.An Aleksandr Rybalko Aq Mt ray@FreeBSD.org
-copied it over as
-.Nm
-and added LZMA functionality .
-This manual page was written by
-.An Ceri Davies Aq Mt ceri@FreeBSD.org
-for the
-.Xr geom_uzip 4 ,
-and modified by
-.An Luiz Otavio O Souza Aq Mt loos@FreeBSD.org
-to match
-.Nm .
diff --git a/share/man/man4/geom_uzip.4 b/share/man/man4/geom_uzip.4
index 0d36322..4dbab52 100644
--- a/share/man/man4/geom_uzip.4
+++ b/share/man/man4/geom_uzip.4
@@ -30,7 +30,7 @@
 .Os
 .Sh NAME
 .Nm geom_uzip
-.Nd "GEOM based compressed disk images"
+.Nd "GEOM based compressed disk images and partitions"
 .Sh SYNOPSIS
 To compile this driver into the kernel,
 place the following line in your
@@ -51,7 +51,7 @@ The
 framework provides support for compressed read-only
 disk images.
 This allows significant storage savings at the expense of
-a little CPU time on each read.
+a some CPU time on each read.
 Data written in the GEOM label area allows
 .Nm
 to detect compressed images which have been created with
@@ -63,17 +63,53 @@ creates a unique
 .Pa md#.uzip
 device for each image.
 .Pp
+.Nm
+is not limited to supporting only
+.Xr md 4
+images.
+The image can also reside on a block device.
+.Pq For example, a disk, USB flash drive,  DVD-ROM, etc.
+The appropriate device node will appear with the
+.Pa .uzip
+suffix.
+.Bd -literal -offset indent
+# gpart show da0
+=>      0  7833600  da0  BSD  (3.7G)
+        0  2097152    1  freebsd-ufs  (1.0G)
+  2097152  5736448       - free -  (2.7G)
+# gpart add -t freebsd-ufs -s 1G da0
+da0b added
+# dd if=/tmp/20160217_dcomp_zcomp.uzip bs=256k of=/dev/da0b
+3190+1 records in
+3190+1 records out
+836331008 bytes transferred in 111.021489 secs (7533055 bytes/sec)
+# fsck -t ffs /dev/da0b.uzip
+** /dev/da0b.uzip (NO WRITE)
+** Last Mounted on /mnt
+** Phase 1 - Check Blocks and Sizes
+** Phase 2 - Check Pathnames
+** Phase 3 - Check Connectivity
+** Phase 4 - Check Reference Counts
+** Phase 5 - Check Cyl groups
+97455 files, 604242 used, 184741 free (2349 frags, 22799 blocks,
+   0.3% fragmentation)
+# mount -o ro /dev/da0b.uzip /mnt
+# df /dev/da0b.uzip
+Filesystem     1K-blocks    Used  Avail Capacity  Mounted on
+/dev/da0b.uzip   3155932 2416968 738964    77%    /mnt
+.Ed
+.Pp
 The
 .Nm
-device is subsequently used by the
+device is subsequently used by
 .Fx
-kernel to access the disk images.
+kernel to access the uncompressed data.
 The
 .Nm
 driver does not allow write operations to the underlying disk image.
 To check which
-.Xr md 4
-devices match a given
+.Dq providers
+match a given
 .Nm
 device:
 .Bd -literal -offset indent
@@ -83,13 +119,44 @@ Providers:
 1. Name: md1.uzip
    Mediasize: 22003712 (21M)
    Sectorsize: 512
-   Mode: r1w0e1
 Consumers:
 1. Name: md1
    Mediasize: 9563648 (9.1M)
    Sectorsize: 512
-   Mode: r1w0e1
+
+Geom name: da0b.uzip
+Providers:
+1. Name: da0b.uzip
+   Mediasize: 3355443200 (3.1G)
+   Sectorsize: 512
+Consumers:
+1. Name: da0b
+   Mediasize: 1073741824 (1.0G)
+   Sectorsize: 512
 .Ed
+.Pp
+.Nm
+allows mounting the root file system from a compressed disk partition by
+setting the
+.Dv vfs.root.mountfrom
+tunable.
+See
+.Xr loader.conf 5
+for details.
+.Sh DIAGNOSTICS
+Several flags are provided for tracing
+.Nm
+I/O operations and TOC parsing via the following sysctls.
+.Bl -tag -width indent
+.It Va kern.geom.uzip.debug
+Log level.
+Zero disables logging.
+Higher values enable more verbose debug logging for
+.Nm .
+Supported levels are from 0 (no logging) to 4 (maximum amount of logging).
+.It Va kern.geom.uzip.debug_block
+Log operations involving compressed cluster number.
+.El
 .Sh SEE ALSO
 .Xr GEOM 4 ,
 .Xr md 4 ,
@@ -101,5 +168,12 @@ The
 .Nm
 driver was written by
 .An Max Khon Aq Mt fjoe@FreeBSD.org .
+The block de-duplication code as well as some
+.Nm
+driver optimizations have been contributed by
+.An Maxim Sobolev Aq Mt sobomax@FreeBSD.org .
+The LZMA decompression support and CLOOP 3.0 support have been added by
+.An Aleksandr Rybalko Aq Mt ray@FreeBSD.org .
+.Pp
 This manual page was written by
 .An Ceri Davies Aq Mt ceri@FreeBSD.org .
diff --git a/share/man/man8/rc.subr.8 b/share/man/man8/rc.subr.8
index 47457ea..47959f3 100644
--- a/share/man/man8/rc.subr.8
+++ b/share/man/man8/rc.subr.8
@@ -29,7 +29,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd October 12, 2014
+.Dd February 4, 2016
 .Dt RC.SUBR 8
 .Os
 .Sh NAME
@@ -604,6 +604,16 @@ as.
 Only supported after
 .Pa /usr
 is mounted.
+.It Va ${name}_oomprotect
+.Xr protect 1
+.Va command
+from being killed when swap space is exhausted.
+If
+.Em YES
+is used, no child processes are protected.
+If
+.Em ALL ,
+protect all child processes.
 .It Va ${name}_program
 Full path to the command.
 Overrides
diff --git a/sys/boot/forth/loader.conf b/sys/boot/forth/loader.conf
index c13e90e..9162055 100644
--- a/sys/boot/forth/loader.conf
+++ b/sys/boot/forth/loader.conf
@@ -238,7 +238,6 @@ geom_nop_load="NO"		# Transparent disk driver (see gnop(8))
 geom_raid3_load="NO"		# RAID3 disk driver (see graid3(8))
 geom_shsec_load="NO"		# Shared secret disk driver (see gshsec(8))
 geom_stripe_load="NO"		# RAID0 disk driver (see gstripe(8))
-geom_uncompress_load="NO"	# Compressed disk images driver (see mkulzma(8))
 geom_uzip_load="NO"		# Compressed disk images driver (see mkuzip(8))
 geom_vinum_load="NO"		# Concatenated/mirror/raid driver (see vinum(4))
 
diff --git a/sys/conf/files b/sys/conf/files
index bbf9713..ba5e04bc 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -3081,23 +3081,25 @@ geom/raid3/g_raid3.c		optional geom_raid3
 geom/raid3/g_raid3_ctl.c	optional geom_raid3
 geom/shsec/g_shsec.c		optional geom_shsec
 geom/stripe/g_stripe.c		optional geom_stripe
-geom/uncompress/g_uncompress.c	optional geom_uncompress
 contrib/xz-embedded/freebsd/xz_malloc.c	\
-	optional xz_embedded | geom_uncompress \
+	optional xz_embedded | geom_uzip \
 	compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
 contrib/xz-embedded/linux/lib/xz/xz_crc32.c \
-	optional xz_embedded | geom_uncompress \
+	optional xz_embedded | geom_uzip \
 	compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
 contrib/xz-embedded/linux/lib/xz/xz_dec_bcj.c \
-	optional xz_embedded | geom_uncompress \
+	optional xz_embedded | geom_uzip \
 	compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
 contrib/xz-embedded/linux/lib/xz/xz_dec_lzma2.c \
-	optional xz_embedded | geom_uncompress \
+	optional xz_embedded | geom_uzip \
 	compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
 contrib/xz-embedded/linux/lib/xz/xz_dec_stream.c \
-	optional xz_embedded | geom_uncompress \
+	optional xz_embedded | geom_uzip \
 	compile-with "${NORMAL_C} -I$S/contrib/xz-embedded/freebsd/ -I$S/contrib/xz-embedded/linux/lib/xz/ -I$S/contrib/xz-embedded/linux/include/linux/"
 geom/uzip/g_uzip.c		optional geom_uzip
+geom/uzip/g_uzip_lzma.c		optional geom_uzip
+geom/uzip/g_uzip_wrkthr.c	optional geom_uzip
+geom/uzip/g_uzip_zlib.c		optional geom_uzip
 geom/vinum/geom_vinum.c		optional geom_vinum
 geom/vinum/geom_vinum_create.c	optional geom_vinum
 geom/vinum/geom_vinum_drive.c	optional geom_vinum
@@ -3455,7 +3457,7 @@ libkern/strvalid.c		standard
 libkern/timingsafe_bcmp.c	standard
 libkern/zlib.c			optional crypto | geom_uzip | ipsec | \
 					 mxge | netgraph_deflate | \
-					 ddb_ctf | gzio | geom_uncompress
+					 ddb_ctf | gzio
 net/altq/altq_cbq.c		optional altq
 net/altq/altq_cdnr.c		optional altq
 net/altq/altq_codel.c		optional altq
diff --git a/sys/dev/acpica/acpi_ec.c b/sys/dev/acpica/acpi_ec.c
index 8a8cb6e..6482b3f 100644
--- a/sys/dev/acpica/acpi_ec.c
+++ b/sys/dev/acpica/acpi_ec.c
@@ -434,9 +434,7 @@ out:
 		 params->gpe_bit, (params->glk) ? ", GLK" : "",
 		 ecdt ? ", ECDT" : "");
 	device_set_desc_copy(dev, desc);
-    }
-
-    if (ret > 0 && params)
+    } else
 	free(params, M_TEMP);
     if (buf.Pointer)
 	AcpiOsFree(buf.Pointer);
diff --git a/sys/dev/acpica/acpi_video.c b/sys/dev/acpica/acpi_video.c
index 5b9e526..6360071 100644
--- a/sys/dev/acpica/acpi_video.c
+++ b/sys/dev/acpica/acpi_video.c
@@ -597,23 +597,28 @@ acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle)
 {
 
 	ACPI_SERIAL_BEGIN(video_output);
-	if (vo->vo_levels != NULL)
+	if (vo->vo_levels != NULL) {
+		AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY,
+		    acpi_video_vo_notify_handler);
 		AcpiOsFree(vo->vo_levels);
+		vo->vo_levels = NULL;
+	}
 	vo->handle = handle;
 	vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels);
 	if (vo->vo_numlevels >= 2) {
-		if (vo->vo_fullpower == -1
-		    || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0)
+		if (vo->vo_fullpower == -1 ||
+		    acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) {
 			/* XXX - can't deal with rebinding... */
 			vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER];
-		if (vo->vo_economy == -1
-		    || acpi_video_vo_check_level(vo, vo->vo_economy) != 0)
+		}
+		if (vo->vo_economy == -1 ||
+		    acpi_video_vo_check_level(vo, vo->vo_economy) != 0) {
 			/* XXX - see above. */
 			vo->vo_economy = vo->vo_levels[BCL_ECONOMY];
-	}
-	if (vo->vo_levels != NULL)
+		}
 		AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY,
 		    acpi_video_vo_notify_handler, vo);
+	}
 	ACPI_SERIAL_END(video_output);
 }
 
diff --git a/sys/dev/ixl/if_ixl.c b/sys/dev/ixl/if_ixl.c
index f972c5f..3717cbf 100644
--- a/sys/dev/ixl/if_ixl.c
+++ b/sys/dev/ixl/if_ixl.c
@@ -115,6 +115,8 @@ static int	ixl_init_msix(struct ixl_pf *);
 static void	ixl_configure_msix(struct ixl_pf *);
 static void	ixl_configure_itr(struct ixl_pf *);
 static void	ixl_configure_legacy(struct ixl_pf *);
+static void	ixl_init_taskqueues(struct ixl_pf *);
+static void	ixl_free_taskqueues(struct ixl_pf *);
 static void	ixl_free_pci_resources(struct ixl_pf *);
 static void	ixl_local_timer(void *);
 static int	ixl_setup_interface(device_t, struct ixl_vsi *);
@@ -642,7 +644,7 @@ ixl_attach(device_t dev)
 	else
 		error = ixl_assign_vsi_legacy(pf);
 	if (error) 
-		goto err_late;
+		goto err_mac_hmc;
 
 	if (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
 	    (hw->aq.fw_maj_ver < 4)) {
@@ -667,7 +669,7 @@ ixl_attach(device_t dev)
 	error = ixl_switch_config(pf);
 	if (error) {
 		device_printf(dev, "Initial switch config failed: %d\n", error);
-		goto err_mac_hmc;
+		goto err_late;
 	}
 
 	/* Limit phy interrupts to link and modules failure */
@@ -680,6 +682,9 @@ ixl_attach(device_t dev)
 	bus = ixl_get_bus_info(hw, dev);
 	i40e_set_pci_config_data(hw, bus);
 
+	/* Initialize taskqueues */
+	ixl_init_taskqueues(pf);
+
 	/* Initialize statistics */
 	ixl_pf_reset_stats(pf);
 	ixl_update_stats_counters(pf);
@@ -748,7 +753,6 @@ ixl_detach(device_t dev)
 	struct ixl_pf		*pf = device_get_softc(dev);
 	struct i40e_hw		*hw = &pf->hw;
 	struct ixl_vsi		*vsi = &pf->vsi;
-	struct ixl_queue	*que = vsi->queues;
 	i40e_status		status;
 #ifdef PCI_IOV
 	int			error;
@@ -777,13 +781,7 @@ ixl_detach(device_t dev)
 		IXL_PF_UNLOCK(pf);
 	}
 
-	for (int i = 0; i < vsi->num_queues; i++, que++) {
-		if (que->tq) {
-			taskqueue_drain(que->tq, &que->task);
-			taskqueue_drain(que->tq, &que->tx_task);
-			taskqueue_free(que->tq);
-		}
-	}
+	ixl_free_taskqueues(pf);
 
 	/* Shutdown LAN HMC */
 	status = i40e_shutdown_lan_hmc(hw);
@@ -1990,6 +1988,58 @@ ixl_assign_vsi_legacy(struct ixl_pf *pf)
 	return (0);
 }
 
+static void
+ixl_init_taskqueues(struct ixl_pf *pf)
+{
+       struct ixl_vsi *vsi = &pf->vsi;
+       struct ixl_queue *que = vsi->queues;
+       device_t dev = pf->dev;
+
+       /* Tasklet for Admin Queue */
+       TASK_INIT(&pf->adminq, 0, ixl_do_adminq, pf);
+#ifdef PCI_IOV
+       /* VFLR Tasklet */
+       TASK_INIT(&pf->vflr_task, 0, ixl_handle_vflr, pf);
+#endif
+
+       /* Create and start PF taskqueue */
+       pf->tq = taskqueue_create_fast("ixl_adm", M_NOWAIT,
+           taskqueue_thread_enqueue, &pf->tq);
+       taskqueue_start_threads(&pf->tq, 1, PI_NET, "%s adminq",
+           device_get_nameunit(dev));
+
+       /* Create queue tasks and start queue taskqueues */
+       for (int i = 0; i < vsi->num_queues; i++, que++) {
+               TASK_INIT(&que->tx_task, 0, ixl_deferred_mq_start, que);
+               TASK_INIT(&que->task, 0, ixl_handle_que, que);
+               que->tq = taskqueue_create_fast("ixl_que", M_NOWAIT,
+                   taskqueue_thread_enqueue, &que->tq);
+#ifdef RSS
+               CPU_SETOF(cpu_id, &cpu_mask);
+               taskqueue_start_threads_cpuset(&que->tq, 1, PI_NET,
+                   &cpu_mask, "%s (bucket %d)",
+                   device_get_nameunit(dev), cpu_id);
+#else
+               taskqueue_start_threads(&que->tq, 1, PI_NET,
+                   "%s (que %d)", device_get_nameunit(dev), que->me);
+#endif
+       }
+
+}
+
+static void
+ixl_free_taskqueues(struct ixl_pf *pf)
+{
+       struct ixl_vsi          *vsi = &pf->vsi;
+       struct ixl_queue        *que = vsi->queues;
+
+       if (pf->tq)
+               taskqueue_free(pf->tq);
+       for (int i = 0; i < vsi->num_queues; i++, que++) {
+               if (que->tq)
+                       taskqueue_free(que->tq);
+       }
+}
 
 /*********************************************************************
  *
@@ -2028,17 +2078,6 @@ ixl_assign_vsi_msix(struct ixl_pf *pf)
 	}
 	bus_describe_intr(dev, pf->res, pf->tag, "aq");
 	pf->admvec = vector;
-	/* Tasklet for Admin Queue */
-	TASK_INIT(&pf->adminq, 0, ixl_do_adminq, pf);
-
-#ifdef PCI_IOV
-	TASK_INIT(&pf->vflr_task, 0, ixl_handle_vflr, pf);
-#endif
-
-	pf->tq = taskqueue_create_fast("ixl_adm", M_NOWAIT,
-	    taskqueue_thread_enqueue, &pf->tq);
-	taskqueue_start_threads(&pf->tq, 1, PI_NET, "%s adminq",
-	    device_get_nameunit(pf->dev));
 	++vector;
 
 	/* Now set up the stations */
@@ -2069,19 +2108,6 @@ ixl_assign_vsi_msix(struct ixl_pf *pf)
 #endif
 		bus_bind_intr(dev, que->res, cpu_id);
 		que->msix = vector;
-		TASK_INIT(&que->tx_task, 0, ixl_deferred_mq_start, que);
-		TASK_INIT(&que->task, 0, ixl_handle_que, que);
-		que->tq = taskqueue_create_fast("ixl_que", M_NOWAIT,
-		    taskqueue_thread_enqueue, &que->tq);
-#ifdef RSS
-		CPU_SETOF(cpu_id, &cpu_mask);
-		taskqueue_start_threads_cpuset(&que->tq, 1, PI_NET,
-		    &cpu_mask, "%s (bucket %d)",
-		    device_get_nameunit(dev), cpu_id);
-#else
-		taskqueue_start_threads(&que->tq, 1, PI_NET,
-		    "%s que", device_get_nameunit(dev));
-#endif
 	}
 
 	return (0);
@@ -2144,9 +2170,15 @@ ixl_init_msix(struct ixl_pf *pf)
 	/* Figure out a reasonable auto config value */
 	queues = (mp_ncpus > (available - 1)) ? (available - 1) : mp_ncpus;
 
-	/* Override with hardcoded value if sane */
+	/* Override with hardcoded value if it's less than autoconfig count */
 	if ((ixl_max_queues != 0) && (ixl_max_queues <= queues)) 
 		queues = ixl_max_queues;
+	else if ((ixl_max_queues != 0) && (ixl_max_queues > queues))
+		device_printf(dev, "ixl_max_queues > # of cpus, using "
+		    "autoconfig amount...\n");
+	/* Or limit maximum auto-configured queues to 8 */
+	else if ((ixl_max_queues == 0) && (queues > 8))
+		queues = 8;
 
 #ifdef  RSS
 	/* If we're doing RSS, clamp at the number of RSS buckets */
@@ -2880,7 +2912,6 @@ ixl_initialize_vsi(struct ixl_vsi *vsi)
 			device_printf(dev, "Fail in init_rx_ring %d\n", i);
 			break;
 		}
-		wr32(vsi->hw, I40E_QRX_TAIL(que->me), 0);
 #ifdef DEV_NETMAP
 		/* preserve queue */
 		if (vsi->ifp->if_capenable & IFCAP_NETMAP) {
diff --git a/sys/dev/ixl/ixl_txrx.c b/sys/dev/ixl/ixl_txrx.c
index e78af11..0ae7433 100644
--- a/sys/dev/ixl/ixl_txrx.c
+++ b/sys/dev/ixl/ixl_txrx.c
@@ -390,7 +390,6 @@ ixl_xmit(struct ixl_queue *que, struct mbuf **m_headp)
 	++txr->total_packets;
 	wr32(hw, txr->tail, i);
 
-	ixl_flush(hw);
 	/* Mark outstanding work */
 	if (que->busy == 0)
 		que->busy = 1;
diff --git a/sys/dev/nvme/nvme_ctrlr.c b/sys/dev/nvme/nvme_ctrlr.c
index 2c8a564..00277f0 100644
--- a/sys/dev/nvme/nvme_ctrlr.c
+++ b/sys/dev/nvme/nvme_ctrlr.c
@@ -810,7 +810,7 @@ nvme_ctrlr_intx_handler(void *arg)
 
 	nvme_qpair_process_completions(&ctrlr->adminq);
 
-	if (ctrlr->ioq[0].cpl)
+	if (ctrlr->ioq && ctrlr->ioq[0].cpl)
 		nvme_qpair_process_completions(&ctrlr->ioq[0]);
 
 	nvme_mmio_write_4(ctrlr, intmc, 1);
diff --git a/sys/dev/usb/controller/xhci.c b/sys/dev/usb/controller/xhci.c
index 1c1d2b0..0739e28 100644
--- a/sys/dev/usb/controller/xhci.c
+++ b/sys/dev/usb/controller/xhci.c
@@ -2358,6 +2358,8 @@ xhci_configure_endpoint(struct usb_device *udev,
 
 	/* store endpoint mode */
 	pepext->trb_ep_mode = ep_mode;
+	/* store bMaxPacketSize for control endpoints */
+	pepext->trb_ep_maxp = edesc->wMaxPacketSize[0];
 	usb_pc_cpu_flush(pepext->page_cache);
 
 	if (ep_mode == USB_EP_MODE_STREAMS) {
@@ -2904,6 +2906,17 @@ xhci_transfer_insert(struct usb_xfer *xfer)
 		return (USB_ERR_NOMEM);
 	}
 
+	/* check if bMaxPacketSize changed */
+	if (xfer->flags_int.control_xfr != 0 &&
+	    pepext->trb_ep_maxp != xfer->endpoint->edesc->wMaxPacketSize[0]) {
+
+		DPRINTFN(8, "Reconfigure control endpoint\n");
+
+		/* force driver to reconfigure endpoint */
+		pepext->trb_halted = 1;
+		pepext->trb_running = 0;
+	}
+
 	/* check for stopped condition, after putting transfer on interrupt queue */
 	if (pepext->trb_running == 0) {
 		struct xhci_softc *sc = XHCI_BUS2SC(xfer->xroot->bus);
diff --git a/sys/dev/usb/controller/xhci.h b/sys/dev/usb/controller/xhci.h
index 4857450..306400a 100644
--- a/sys/dev/usb/controller/xhci.h
+++ b/sys/dev/usb/controller/xhci.h
@@ -383,6 +383,7 @@ struct xhci_endpoint_ext {
 	uint8_t			trb_halted;
 	uint8_t			trb_running;
 	uint8_t			trb_ep_mode;
+	uint8_t			trb_ep_maxp;
 };
 
 enum {
diff --git a/sys/geom/uncompress/g_uncompress.c b/sys/geom/uncompress/g_uncompress.c
deleted file mode 100644
index 1a83cda..0000000
--- a/sys/geom/uncompress/g_uncompress.c
+++ /dev/null
@@ -1,684 +0,0 @@
-/*-
- * Copyright (c) 2010-2012 Aleksandr Rybalko
- * Copyright (c) 2004 Max Khon
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * GEOM UNCOMPRESS module - simple decompression module for use with read-only
- * copressed images maked by mkuzip(8) or mkulzma(8) utilities.
- *
- * To enable module in kernel config, put this line:
- * device	geom_uncompress
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/bio.h>
-#include <sys/endian.h>
-#include <sys/errno.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-#include <sys/malloc.h>
-#include <sys/systm.h>
-#include <sys/zlib.h>
-
-#include <geom/geom.h>
-
-#include <contrib/xz-embedded/linux/include/linux/xz.h>
-
-#ifdef GEOM_UNCOMPRESS_DEBUG
-#define	DPRINTF(a)	printf a
-extern int g_debugflags;
-#else
-#define	DPRINTF(a)
-#endif
-
-static MALLOC_DEFINE(M_GEOM_UNCOMPRESS, "geom_uncompress",
-    "GEOM UNCOMPRESS data structures");
-
-#define	UNCOMPRESS_CLASS_NAME	"UNCOMPRESS"
-#define	GEOM_UZIP_MAJVER '2'
-#define	GEOM_ULZMA_MAJVER '3'
-
-/*
- * Maximum allowed valid block size (to prevent foot-shooting)
- */
-#define	MAX_BLKSZ	(MAXPHYS)
-
-/*
- * Integer values (block size, number of blocks, offsets)
- * are stored in big-endian (network) order on disk and struct cloop_header
- * and in native order in struct g_uncompress_softc
- */
-
-#define	CLOOP_MAGIC_LEN	128
-static char CLOOP_MAGIC_START[] = "#!/bin/sh\n";
-
-struct cloop_header {
-	char magic[CLOOP_MAGIC_LEN];	/* cloop magic */
-	uint32_t blksz;			/* block size */
-	uint32_t nblocks;		/* number of blocks */
-};
-
-struct g_uncompress_softc {
-	uint32_t blksz;			/* block size */
-	uint32_t nblocks;		/* number of blocks */
-	uint64_t *offsets;
-	enum {
-		GEOM_UZIP = 1,
-		GEOM_ULZMA
-	} type;
-
-	struct mtx last_mtx;
-	uint32_t last_blk;		/* last blk no */
-	char *last_buf;			/* last blk data */
-	int req_total;			/* total requests */
-	int req_cached;			/* cached requests */
-
-	/* XZ decoder structs */
-	struct xz_buf *b;
-	struct xz_dec *s;
-	z_stream *zs;
-};
-
-static void
-g_uncompress_softc_free(struct g_uncompress_softc *sc, struct g_geom *gp)
-{
-
-	if (gp != NULL) {
-		DPRINTF(("%s: %d requests, %d cached\n",
-		    gp->name, sc->req_total, sc->req_cached));
-	}
-	if (sc->offsets != NULL) {
-		free(sc->offsets, M_GEOM_UNCOMPRESS);
-		sc->offsets = NULL;
-	}
-
-	switch (sc->type) {
-	case GEOM_ULZMA:
-		if (sc->b) {
-			free(sc->b, M_GEOM_UNCOMPRESS);
-			sc->b = 0;
-		}
-		if (sc->s) {
-			xz_dec_end(sc->s);
-			sc->s = 0;
-		}
-		break;
-	case GEOM_UZIP:
-		if (sc->zs) {
-			inflateEnd(sc->zs);
-			free(sc->zs, M_GEOM_UNCOMPRESS);
-			sc->zs = 0;
-		}
-		break;
-	}
-
-	mtx_destroy(&sc->last_mtx);
-	free(sc->last_buf, M_GEOM_UNCOMPRESS);
-	free(sc, M_GEOM_UNCOMPRESS);
-}
-
-static void *
-z_alloc(void *nil, u_int type, u_int size)
-{
-	void *ptr;
-
-	ptr = malloc(type * size, M_GEOM_UNCOMPRESS, M_NOWAIT);
-
-	return (ptr);
-}
-
-static void
-z_free(void *nil, void *ptr)
-{
-
-	free(ptr, M_GEOM_UNCOMPRESS);
-}
-
-static void
-g_uncompress_done(struct bio *bp)
-{
-	struct g_uncompress_softc *sc;
-	struct g_provider *pp, *pp2;
-	struct g_consumer *cp;
-	struct g_geom *gp;
-	struct bio *bp2;
-	uint32_t start_blk, i;
-	off_t iolen, pos, upos;
-	size_t bsize;
-	int err;
-
-	err = 0;
-	bp2 = bp->bio_parent;
-	pp = bp2->bio_to;
-	gp = pp->geom;
-	cp = LIST_FIRST(&gp->consumer);
-	pp2 = cp->provider;
-	sc = gp->softc;
-	DPRINTF(("%s: done\n", gp->name));
-
-	bp2->bio_error = bp->bio_error;
-	if (bp2->bio_error != 0)
-		goto done;
-
-	/*
-	 * Example:
-	 * Uncompressed block size = 65536
-	 * User request: 65540-261632
-	 * (4 uncompressed blocks -4B at start, -512B at end)
-	 *
-	 * We have 512(secsize)*63(nsec) = 32256B at offset 1024
-	 * From:  1024  bp->bio_offset = 1024
-	 * To:   33280  bp->bio_length = 33280 - 1024 = 32256
-	 * Compressed blocks: 0-1020, 1020-1080, 1080-4845, 4845-12444,
-	 * 	12444-33210, 33210-44100, ...
-	 *
-	 * Get start_blk from user request:
-	 * start_blk = bp2->bio_offset / 65536 = 65540/65536 = 1
-	 * bsize (block size of parent) = pp2->sectorsize (Now is 4B)
-	 * pos(in stream from parent) = sc->offsets[start_blk] % bsize =
-	 *    = sc->offsets[1] % 4 = 1020 % 4 = 0
-	 */
-
-	/*
-	 * Uncompress data.
-	 */
-	start_blk = bp2->bio_offset / sc->blksz;
-	bsize = pp2->sectorsize;
-	iolen = bp->bio_completed;
-	pos = sc->offsets[start_blk] % bsize;
-	upos = 0;
-
-	DPRINTF(("%s: done: bio_length %jd bio_completed %jd start_blk %d, "
-	    "pos %jd, upos %jd (%jd, %d, %zu)\n",
-	    gp->name, (intmax_t)bp->bio_length, (intmax_t)bp->bio_completed,
-	    start_blk, (intmax_t)pos, (intmax_t)upos,
-	    (intmax_t)bp2->bio_offset, sc->blksz, bsize));
-
-	for (i = start_blk; upos < bp2->bio_length; i++) {
-		off_t len, ulen, uoff;
-
-		uoff = i == start_blk ? bp2->bio_offset % sc->blksz : 0;
-		ulen = MIN(sc->blksz - uoff, bp2->bio_length - upos);
-		len = sc->offsets[i + 1] - sc->offsets[i];
-
-		DPRINTF((
-		    "%s: done: inflate block %d, start %ju, end %ju len %jd\n",
-		    gp->name, i, (uintmax_t)sc->offsets[i],
-		    (uintmax_t)sc->offsets[i + 1], (intmax_t)len));
-
-		if (len == 0) {
-			/* All zero block: no cache update */
-			bzero(bp2->bio_data + upos, ulen);
-			upos += ulen;
-			bp2->bio_completed += ulen;
-			continue;
-		}
-		if (len > iolen) {
-			DPRINTF(("%s: done: early termination: len (%jd) > "
-			    "iolen (%jd)\n",
-			    gp->name, (intmax_t)len, (intmax_t)iolen));
-			break;
-		}
-		mtx_lock(&sc->last_mtx);
-
-#ifdef GEOM_UNCOMPRESS_DEBUG
-		if (g_debugflags & 32)
-			hexdump(bp->bio_data + pos, len, 0, 0);
-#endif
-
-		switch (sc->type) {
-		case GEOM_ULZMA:
-			sc->b->in = bp->bio_data + pos;
-			sc->b->out = sc->last_buf;
-			sc->b->in_pos = sc->b->out_pos = 0;
-			sc->b->in_size = len;
-			sc->b->out_size = (size_t)-1;
-
-			err = (xz_dec_run(sc->s, sc->b) != XZ_STREAM_END) ?
-			    1 : 0;
-			/* TODO decoder recovery, if needed */
-			break;
-		case GEOM_UZIP:
-			sc->zs->next_in = bp->bio_data + pos;
-			sc->zs->avail_in = len;
-			sc->zs->next_out = sc->last_buf;
-			sc->zs->avail_out = sc->blksz;
-
-			err = (inflate(sc->zs, Z_FINISH) != Z_STREAM_END) ?
-			    1 : 0;
-			if ((err) || (inflateReset(sc->zs) != Z_OK))
-				printf("%s: UZIP decoder reset failed\n",
-				     gp->name);
-			break;
-		}
-
-		if (err) {
-			sc->last_blk = -1;
-			mtx_unlock(&sc->last_mtx);
-			DPRINTF(("%s: done: inflate failed, code=%d\n",
-			    gp->name, err));
-			bp2->bio_error = EIO;
-			goto done;
-		}
-
-#ifdef GEOM_UNCOMPRESS_DEBUG
-		if (g_debugflags & 32)
-			hexdump(sc->last_buf, sc->b->out_size, 0, 0);
-#endif
-
-		sc->last_blk = i;
-		DPRINTF(("%s: done: inflated \n", gp->name));
-		memcpy(bp2->bio_data + upos, sc->last_buf + uoff, ulen);
-		mtx_unlock(&sc->last_mtx);
-
-		pos += len;
-		iolen -= len;
-		upos += ulen;
-		bp2->bio_completed += ulen;
-	}
-
-done:
-	/*
-	 * Finish processing the request.
-	 */
-	DPRINTF(("%s: done: (%d, %jd, %ld)\n",
-	    gp->name, bp2->bio_error, (intmax_t)bp2->bio_completed,
-	    bp2->bio_resid));
-	free(bp->bio_data, M_GEOM_UNCOMPRESS);
-	g_destroy_bio(bp);
-	g_io_deliver(bp2, bp2->bio_error);
-}
-
-static void
-g_uncompress_start(struct bio *bp)
-{
-	struct g_uncompress_softc *sc;
-	struct g_provider *pp, *pp2;
-	struct g_consumer *cp;
-	struct g_geom *gp;
-	struct bio *bp2;
-	uint32_t start_blk, end_blk;
-	size_t bsize;
-
-	pp = bp->bio_to;
-	gp = pp->geom;
-	DPRINTF(("%s: start (%d:%s) to %s off=%jd len=%jd\n",
-	    gp->name, bp->bio_cmd,
-	    (bp->bio_cmd == BIO_READ) ? "BIO_READ" : "NOTSUPPORTED",
-	    pp->name, (intmax_t)bp->bio_offset, (intmax_t)bp->bio_length));
-
-	if (bp->bio_cmd != BIO_READ) {
-		g_io_deliver(bp, EOPNOTSUPP);
-		return;
-	}
-
-	cp = LIST_FIRST(&gp->consumer);
-	pp2 = cp->provider;
-	sc = gp->softc;
-
-	start_blk = bp->bio_offset / sc->blksz;
-	end_blk   = howmany(bp->bio_offset + bp->bio_length, sc->blksz);
-	KASSERT(start_blk < sc->nblocks, ("start_blk out of range"));
-	KASSERT(end_blk <= sc->nblocks, ("end_blk out of range"));
-
-	sc->req_total++;
-	if (start_blk + 1 == end_blk) {
-		mtx_lock(&sc->last_mtx);
-		if (start_blk == sc->last_blk) {
-			off_t uoff;
-
-			uoff = bp->bio_offset % sc->blksz;
-			KASSERT(bp->bio_length <= sc->blksz - uoff,
-			    ("cached data error"));
-			memcpy(bp->bio_data, sc->last_buf + uoff,
-			    bp->bio_length);
-			sc->req_cached++;
-			mtx_unlock(&sc->last_mtx);
-
-			DPRINTF(("%s: start: cached 0 + %jd, %jd + 0 + %jd\n",
-			    gp->name, (intmax_t)bp->bio_length, (intmax_t)uoff,
-			    (intmax_t)bp->bio_length));
-			bp->bio_completed = bp->bio_length;
-			g_io_deliver(bp, 0);
-			return;
-		}
-		mtx_unlock(&sc->last_mtx);
-	}
-
-	bp2 = g_clone_bio(bp);
-	if (bp2 == NULL) {
-		g_io_deliver(bp, ENOMEM);
-		return;
-	}
-	DPRINTF(("%s: start (%d..%d), %s: %d + %jd, %s: %d + %jd\n",
-	    gp->name, start_blk, end_blk,
-	    pp->name, pp->sectorsize, (intmax_t)pp->mediasize,
-	    pp2->name, pp2->sectorsize, (intmax_t)pp2->mediasize));
-	bsize = pp2->sectorsize;
-	bp2->bio_done = g_uncompress_done;
-	bp2->bio_offset = rounddown(sc->offsets[start_blk], bsize);
-	while (1) {
-		bp2->bio_length = roundup(sc->offsets[end_blk], bsize) -
-		    bp2->bio_offset;
-		if (bp2->bio_length < MAXPHYS)
-			break;
-
-		end_blk--;
-		DPRINTF((
-		    "%s: bio_length (%jd) > MAXPHYS: lowering end_blk to %u\n",
-		    gp->name, (intmax_t)bp2->bio_length, end_blk));
-	}
-	DPRINTF(("%s: start %jd + %jd -> %ju + %ju -> %jd + %jd\n",
-	    gp->name,
-	    (intmax_t)bp->bio_offset, (intmax_t)bp->bio_length,
-	    (uintmax_t)sc->offsets[start_blk],
-	    (uintmax_t)sc->offsets[end_blk] - sc->offsets[start_blk],
-	    (intmax_t)bp2->bio_offset, (intmax_t)bp2->bio_length));
-	bp2->bio_data = malloc(bp2->bio_length, M_GEOM_UNCOMPRESS, M_NOWAIT);
-	if (bp2->bio_data == NULL) {
-		g_destroy_bio(bp2);
-		g_io_deliver(bp, ENOMEM);
-		return;
-	}
-
-	g_io_request(bp2, cp);
-	DPRINTF(("%s: start ok\n", gp->name));
-}
-
-static void
-g_uncompress_orphan(struct g_consumer *cp)
-{
-	struct g_geom *gp;
-
-	g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, cp->provider->name);
-	g_topology_assert();
-
-	gp = cp->geom;
-	g_uncompress_softc_free(gp->softc, gp);
-	gp->softc = NULL;
-	g_wither_geom(gp, ENXIO);
-}
-
-static int
-g_uncompress_access(struct g_provider *pp, int dr, int dw, int de)
-{
-	struct g_consumer *cp;
-	struct g_geom *gp;
-
-	gp = pp->geom;
-	cp = LIST_FIRST(&gp->consumer);
-	KASSERT (cp != NULL, ("g_uncompress_access but no consumer"));
-
-	if (cp->acw + dw > 0)
-		return (EROFS);
-
-	return (g_access(cp, dr, dw, de));
-}
-
-static void
-g_uncompress_spoiled(struct g_consumer *cp)
-{
-	struct g_geom *gp;
-
-	gp = cp->geom;
-	g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, gp->name);
-	g_topology_assert();
-
-	g_uncompress_softc_free(gp->softc, gp);
-	gp->softc = NULL;
-	g_wither_geom(gp, ENXIO);
-}
-
-static struct g_geom *
-g_uncompress_taste(struct g_class *mp, struct g_provider *pp, int flags)
-{
-	struct cloop_header *header;
-	struct g_uncompress_softc *sc;
-	struct g_provider *pp2;
-	struct g_consumer *cp;
-	struct g_geom *gp;
-	uint64_t *offsets;
-	uint32_t i, r, total, total_offsets, type;
-	uint8_t *buf;
-	int error;
-
-	g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name);
-	g_topology_assert();
-
-	/* Skip providers that are already open for writing. */
-	if (pp->acw > 0)
-		return (NULL);
-
-	buf = NULL;
-
-	/*
-	 * Create geom instance.
-	 */
-	gp = g_new_geomf(mp, "%s.uncompress", pp->name);
-	cp = g_new_consumer(gp);
-	error = g_attach(cp, pp);
-	if (error == 0)
-		error = g_access(cp, 1, 0, 0);
-	if (error) {
-		g_detach(cp);
-		g_destroy_consumer(cp);
-		g_destroy_geom(gp);
-		return (NULL);
-	}
-	g_topology_unlock();
-
-	/*
-	 * Read cloop header, look for CLOOP magic, perform
-	 * other validity checks.
-	 */
-	DPRINTF(("%s: media sectorsize %u, mediasize %jd\n",
-	    gp->name, pp->sectorsize, (intmax_t)pp->mediasize));
-	total = roundup(sizeof(struct cloop_header), pp->sectorsize);
-	buf = g_read_data(cp, 0, total, NULL);
-	if (buf == NULL)
-		goto err;
-	header = (struct cloop_header *) buf;
-	if (strncmp(header->magic, CLOOP_MAGIC_START,
-	    sizeof(CLOOP_MAGIC_START) - 1) != 0) {
-		DPRINTF(("%s: no CLOOP magic\n", gp->name));
-		goto err;
-	}
-
-	switch (header->magic[0x0b]) {
-	case 'L':
-		type = GEOM_ULZMA;
-		if (header->magic[0x0c] < GEOM_ULZMA_MAJVER) {
-			DPRINTF(("%s: image version too old\n", gp->name));
-			goto err;
-		}
-		DPRINTF(("%s: GEOM_ULZMA image found\n", gp->name));
-		break;
-	case 'V':
-		type = GEOM_UZIP;
-		if (header->magic[0x0c] < GEOM_UZIP_MAJVER) {
-			DPRINTF(("%s: image version too old\n", gp->name));
-			goto err;
-		}
-		DPRINTF(("%s: GEOM_UZIP image found\n", gp->name));
-		break;
-	default:
-		DPRINTF(("%s: unsupported image type\n", gp->name));
-		goto err;
-	}
-
-	DPRINTF(("%s: found CLOOP magic\n", gp->name));
-	/*
-	 * Initialize softc and read offsets.
-	 */
-	sc = malloc(sizeof(*sc), M_GEOM_UNCOMPRESS, M_WAITOK | M_ZERO);
-	gp->softc = sc;
-	sc->type = type;
-	sc->blksz = ntohl(header->blksz);
-	sc->nblocks = ntohl(header->nblocks);
-	if (sc->blksz % 4 != 0) {
-		printf("%s: block size (%u) should be multiple of 4.\n",
-		    gp->name, sc->blksz);
-		goto err;
-	}
-	if (sc->blksz > MAX_BLKSZ) {
-		printf("%s: block size (%u) should not be larger than %d.\n",
-		    gp->name, sc->blksz, MAX_BLKSZ);
-	}
-	total_offsets = sc->nblocks + 1;
-	if (sizeof(struct cloop_header) +
-	    total_offsets * sizeof(uint64_t) > pp->mediasize) {
-		printf("%s: media too small for %u blocks\n",
-		    gp->name, sc->nblocks);
-		goto err;
-	}
-	g_free(buf);
-
-	sc->offsets = malloc(total_offsets * sizeof(uint64_t),
-	    M_GEOM_UNCOMPRESS, M_WAITOK | M_ZERO);
-	total = roundup((sizeof(struct cloop_header) +
-	    total_offsets * sizeof(uint64_t)), pp->sectorsize);
-#define	RSZ	((total - r) > MAXPHYS ? MAXPHYS: (total - r))
-	for (r = 0, i = 0; r < total; r += MAXPHYS) {
-		buf = g_read_data(cp, r, RSZ, &error);
-		if (buf == NULL) {
-			free(sc->offsets, M_GEOM_UNCOMPRESS);
-			goto err;
-		}
-		offsets = (uint64_t *)buf;
-		if (r == 0)
-			offsets +=
-			    sizeof(struct cloop_header) / sizeof(uint64_t);
-		for (; i < total_offsets && offsets < (uint64_t *)(buf + RSZ);
-		    i++, offsets++)
-			sc->offsets[i] = be64toh(*offsets);
-		g_free(buf);
-	}
-#undef RSZ
-	buf = NULL;
-	DPRINTF(("%s: done reading offsets\n", gp->name));
-	mtx_init(&sc->last_mtx, "geom_uncompress cache", NULL, MTX_DEF);
-	sc->last_blk = -1;
-	sc->last_buf = malloc(sc->blksz, M_GEOM_UNCOMPRESS, M_WAITOK);
-	sc->req_total = 0;
-	sc->req_cached = 0;
-
-	switch (sc->type) {
-	case GEOM_ULZMA:
-		xz_crc32_init();
-		sc->s = xz_dec_init(XZ_SINGLE, 0);
-		sc->b = (struct xz_buf*)malloc(sizeof(struct xz_buf),
-		    M_GEOM_UNCOMPRESS, M_WAITOK);
-		break;
-	case GEOM_UZIP:
-		sc->zs = (z_stream *)malloc(sizeof(z_stream),
-		    M_GEOM_UNCOMPRESS, M_WAITOK);
-		sc->zs->zalloc = z_alloc;
-		sc->zs->zfree = z_free;
-		if (inflateInit(sc->zs) != Z_OK) {
-			goto err;
-		}
-		break;
-	}
-
-	g_topology_lock();
-	pp2 = g_new_providerf(gp, "%s", gp->name);
-	pp2->sectorsize = 512;
-	pp2->mediasize = (off_t)sc->nblocks * sc->blksz;
-	if (pp->stripesize > 0) {
-		pp2->stripesize = pp->stripesize;
-		pp2->stripeoffset = pp->stripeoffset;
-	}
-	g_error_provider(pp2, 0);
-	g_access(cp, -1, 0, 0);
-
-	DPRINTF(("%s: taste ok (%d, %jd), (%d, %d), %x\n",
-	    gp->name,
-	    pp2->sectorsize, (intmax_t)pp2->mediasize,
-	    pp2->stripeoffset, pp2->stripesize, pp2->flags));
-	DPRINTF(("%s: %u x %u blocks\n", gp->name, sc->nblocks, sc->blksz));
-	return (gp);
-
-err:
-	g_topology_lock();
-	g_access(cp, -1, 0, 0);
-	if (buf != NULL)
-		g_free(buf);
-	if (gp->softc != NULL) {
-		g_uncompress_softc_free(gp->softc, NULL);
-		gp->softc = NULL;
-	}
-	g_detach(cp);
-	g_destroy_consumer(cp);
-	g_destroy_geom(gp);
-
-	return (NULL);
-}
-
-static int
-g_uncompress_destroy_geom(struct gctl_req *req, struct g_class *mp,
-			  struct g_geom *gp)
-{
-	struct g_provider *pp;
-
-	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, gp->name);
-	g_topology_assert();
-
-	if (gp->softc == NULL) {
-		DPRINTF(("%s(%s): gp->softc == NULL\n", __func__, gp->name));
-		return (ENXIO);
-	}
-
-	KASSERT(gp != NULL, ("NULL geom"));
-	pp = LIST_FIRST(&gp->provider);
-	KASSERT(pp != NULL, ("NULL provider"));
-	if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0)
-		return (EBUSY);
-
-	g_uncompress_softc_free(gp->softc, gp);
-	gp->softc = NULL;
-	g_wither_geom(gp, ENXIO);
-
-	return (0);
-}
-
-static struct g_class g_uncompress_class = {
-	.name = UNCOMPRESS_CLASS_NAME,
-	.version = G_VERSION,
-	.taste = g_uncompress_taste,
-	.destroy_geom = g_uncompress_destroy_geom,
-
-	.start = g_uncompress_start,
-	.orphan = g_uncompress_orphan,
-	.access = g_uncompress_access,
-	.spoiled = g_uncompress_spoiled,
-};
-
-DECLARE_GEOM_CLASS(g_uncompress_class, g_uncompress);
-MODULE_DEPEND(g_uncompress, zlib, 1, 1, 1);
diff --git a/sys/geom/uzip/g_uzip.c b/sys/geom/uzip/g_uzip.c
index 8363d06..3660a92 100644
--- a/sys/geom/uzip/g_uzip.c
+++ b/sys/geom/uzip/g_uzip.c
@@ -1,6 +1,7 @@
 /*-
  * Copyright (c) 2004 Max Khon
  * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,91 +39,116 @@ __FBSDID("$FreeBSD$");
 #include <sys/malloc.h>
 #include <sys/sysctl.h>
 #include <sys/systm.h>
-#include <sys/zlib.h>
+#include <sys/kthread.h>
 
 #include <geom/geom.h>
 
-FEATURE(geom_uzip, "GEOM uzip read-only compressed disks support");
+#include <geom/uzip/g_uzip.h>
+#include <geom/uzip/g_uzip_cloop.h>
+#include <geom/uzip/g_uzip_softc.h>
+#include <geom/uzip/g_uzip_dapi.h>
+#include <geom/uzip/g_uzip_zlib.h>
+#include <geom/uzip/g_uzip_lzma.h>
+#include <geom/uzip/g_uzip_wrkthr.h>
+
+MALLOC_DEFINE(M_GEOM_UZIP, "geom_uzip", "GEOM UZIP data structures");
+
+FEATURE(geom_uzip, "GEOM read-only compressed disks support");
+
+struct g_uzip_blk {
+        uint64_t offset;
+        uint32_t blen;
+#define BLEN_UNDEF      UINT32_MAX
+};
+
+#ifndef ABS
+#define	ABS(a)			((a) < 0 ? -(a) : (a))
+#endif
+
+#define BLK_IN_RANGE(mcn, bcn, ilen)	\
+    (((bcn) != BLEN_UNDEF) && ( \
+	((ilen) >= 0 && (mcn >= bcn) && (mcn <= ((intmax_t)(bcn) + (ilen)))) || \
+	((ilen) < 0 && (mcn <= bcn) && (mcn >= ((intmax_t)(bcn) + (ilen)))) \
+    ))
 
-#undef GEOM_UZIP_DEBUG
 #ifdef GEOM_UZIP_DEBUG
-#define	DPRINTF(a)	printf a
+# define GEOM_UZIP_DBG_DEFAULT	3
 #else
-#define	DPRINTF(a)
+# define GEOM_UZIP_DBG_DEFAULT	0
 #endif
 
-static MALLOC_DEFINE(M_GEOM_UZIP, "geom_uzip", "GEOM UZIP data structures");
+#define	GUZ_DBG_ERR	1
+#define	GUZ_DBG_INFO	2
+#define	GUZ_DBG_IO	3
+#define	GUZ_DBG_TOC	4
+
+SYSCTL_DECL(_kern_geom);
+SYSCTL_NODE(_kern_geom, OID_AUTO, uzip, CTLFLAG_RW, 0, "GEOM_UZIP stuff");
+static u_int g_uzip_debug = GEOM_UZIP_DBG_DEFAULT;
+SYSCTL_UINT(_kern_geom_uzip, OID_AUTO, debug, CTLFLAG_RWTUN, &g_uzip_debug, 0,
+    "Debug level (0-4)");
+static u_int g_uzip_debug_block = BLEN_UNDEF;
+SYSCTL_UINT(_kern_geom_uzip, OID_AUTO, debug_block, CTLFLAG_RWTUN,
+    &g_uzip_debug_block, 0, "Debug operations around specific cluster#");
+
+#define	DPRINTF(lvl, a)		\
+	if ((lvl) <= g_uzip_debug) { \
+		printf a; \
+	}
+#define	DPRINTF_BLK(lvl, cn, a)	\
+	if ((lvl) <= g_uzip_debug || \
+	    BLK_IN_RANGE(cn, g_uzip_debug_block, 8) || \
+	    BLK_IN_RANGE(cn, g_uzip_debug_block, -8)) { \
+		printf a; \
+	}
+#define	DPRINTF_BRNG(lvl, bcn, ecn, a) \
+	if (bcn >= ecn) { \
+		printf("DPRINTF_BRNG: invalid range (%ju, %ju), BUG BUG " \
+		    "BUG!\n", (uintmax_t)bcn, (uintmax_t)ecn); \
+	} else if (((lvl) <= g_uzip_debug) || \
+	    BLK_IN_RANGE(g_uzip_debug_block, bcn, \
+	     (intmax_t)ecn - (intmax_t)bcn)) { \
+		printf a; \
+	}
 
 #define	UZIP_CLASS_NAME	"UZIP"
 
 /*
  * Maximum allowed valid block size (to prevent foot-shooting)
  */
-#define	MAX_BLKSZ	(MAXPHYS - MAXPHYS / 1000 - 12)
+#define	MAX_BLKSZ	(MAXPHYS)
 
-/*
- * Integer values (block size, number of blocks, offsets)
- * are stored in big-endian (network) order on disk and struct cloop_header
- * and in native order in struct g_uzip_softc
- */
-
-#define	CLOOP_MAGIC_LEN	128
 static char CLOOP_MAGIC_START[] = "#!/bin/sh\n";
 
-struct cloop_header {
-	char magic[CLOOP_MAGIC_LEN];	/* cloop magic */
-	uint32_t blksz;			/* block size */
-	uint32_t nblocks;		/* number of blocks */
-};
-
-struct g_uzip_softc {
-	uint32_t blksz;			/* block size */
-	uint32_t nblocks;		/* number of blocks */
-	uint64_t *offsets;
-
-	struct mtx last_mtx;
-	uint32_t last_blk;		/* last blk no */
-	char *last_buf;			/* last blk data */
-	int req_total;			/* total requests */
-	int req_cached;			/* cached requests */
-};
-
-static void g_uzip_done(struct bio *bp);
+static void g_uzip_read_done(struct bio *bp);
+static void g_uzip_do(struct g_uzip_softc *, struct bio *bp);
 
 static void
 g_uzip_softc_free(struct g_uzip_softc *sc, struct g_geom *gp)
 {
 
 	if (gp != NULL) {
-		DPRINTF(("%s: %d requests, %d cached\n",
+		DPRINTF(GUZ_DBG_INFO, ("%s: %d requests, %d cached\n",
 		    gp->name, sc->req_total, sc->req_cached));
 	}
-	if (sc->offsets != NULL) {
-		free(sc->offsets, M_GEOM_UZIP);
-		sc->offsets = NULL;
+
+	mtx_lock(&sc->queue_mtx);
+	sc->wrkthr_flags |= GUZ_SHUTDOWN;
+	wakeup(sc);
+	while (!(sc->wrkthr_flags & GUZ_EXITING)) {
+		msleep(sc->procp, &sc->queue_mtx, PRIBIO, "guzfree",
+		    hz / 10);
 	}
+	mtx_unlock(&sc->queue_mtx);
+
+	sc->dcp->free(sc->dcp);
+	free(sc->toc, M_GEOM_UZIP);
+	mtx_destroy(&sc->queue_mtx);
 	mtx_destroy(&sc->last_mtx);
 	free(sc->last_buf, M_GEOM_UZIP);
 	free(sc, M_GEOM_UZIP);
 }
 
-static void *
-z_alloc(void *nil, u_int type, u_int size)
-{
-	void *ptr;
-
-	ptr = malloc(type * size, M_GEOM_UZIP, M_NOWAIT);
-
-	return (ptr);
-}
-
-static void
-z_free(void *nil, void *ptr)
-{
-
-	free(ptr, M_GEOM_UZIP);
-}
-
 static int
 g_uzip_cached(struct g_geom *gp, struct bio *bp)
 {
@@ -144,8 +170,9 @@ g_uzip_cached(struct g_geom *gp, struct bio *bp)
 		sc->req_cached++;
 		mtx_unlock(&sc->last_mtx);
 
-		DPRINTF(("%s/%s: %p: offset=%jd: got %jd bytes from cache\n",
-		    __func__, gp->name, bp, (intmax_t)ofs, (intmax_t)usz));
+		DPRINTF(GUZ_DBG_IO, ("%s/%s: %p: offset=%jd: got %jd bytes "
+		    "from cache\n", __func__, gp->name, bp, (intmax_t)ofs,
+		    (intmax_t)usz));
 
 		bp->bio_completed += usz;
 		bp->bio_resid -= usz;
@@ -160,6 +187,19 @@ g_uzip_cached(struct g_geom *gp, struct bio *bp)
 	return (0);
 }
 
+#define BLK_ENDS(sc, bi)	((sc)->toc[(bi)].offset + \
+    (sc)->toc[(bi)].blen)
+
+#define BLK_IS_CONT(sc, bi)	(BLK_ENDS((sc), (bi) - 1) == \
+    (sc)->toc[(bi)].offset)
+#define	BLK_IS_NIL(sc, bi)	((sc)->toc[(bi)].blen == 0)
+
+#define TOFF_2_BOFF(sc, pp, bi)	    ((sc)->toc[(bi)].offset - \
+    (sc)->toc[(bi)].offset % (pp)->sectorsize)
+#define TLEN_2_BLEN(sc, pp, bp, ei) ((BLK_ENDS((sc), (ei)) - \
+    (bp)->bio_offset + (pp)->sectorsize - 1) / \
+    (pp)->sectorsize * (pp)->sectorsize)
+
 static int
 g_uzip_request(struct g_geom *gp, struct bio *bp)
 {
@@ -167,21 +207,14 @@ g_uzip_request(struct g_geom *gp, struct bio *bp)
 	struct bio *bp2;
 	struct g_consumer *cp;
 	struct g_provider *pp;
-	off_t ofs;
-	size_t start_blk, end_blk;
+	off_t ofs, start_blk_ofs;
+	size_t i, start_blk, end_blk, zsize;
 
 	if (g_uzip_cached(gp, bp) != 0)
 		return (1);
 
 	sc = gp->softc;
 
-	bp2 = g_clone_bio(bp);
-	if (bp2 == NULL) {
-		g_io_deliver(bp, ENOMEM);
-		return (1);
-	}
-	bp2->bio_done = g_uzip_done;
-
 	cp = LIST_FIRST(&gp->consumer);
 	pp = cp->provider;
 
@@ -191,17 +224,54 @@ g_uzip_request(struct g_geom *gp, struct bio *bp)
 	end_blk = (ofs + bp->bio_resid + sc->blksz - 1) / sc->blksz;
 	KASSERT(end_blk <= sc->nblocks, ("end_blk out of range"));
 
-	DPRINTF(("%s/%s: %p: start=%u (%jd), end=%u (%jd)\n",
-	    __func__, gp->name, bp,
-	    (u_int)start_blk, (intmax_t)sc->offsets[start_blk],
-	    (u_int)end_blk, (intmax_t)sc->offsets[end_blk]));
+	for (; BLK_IS_NIL(sc, start_blk) && start_blk < end_blk; start_blk++) {
+		/* Fill in any leading Nil blocks */
+		start_blk_ofs = ofs % sc->blksz;
+		zsize = MIN(sc->blksz - start_blk_ofs, bp->bio_resid);
+		DPRINTF_BLK(GUZ_DBG_IO, start_blk, ("%s/%s: %p/%ju: "
+		    "filling %ju zero bytes\n", __func__, gp->name, gp,
+		    (uintmax_t)bp->bio_completed, (uintmax_t)zsize));
+		bzero(bp->bio_data + bp->bio_completed, zsize);
+		bp->bio_completed += zsize;
+		bp->bio_resid -= zsize;
+		ofs += zsize;
+	}
+
+	if (start_blk == end_blk) {
+		KASSERT(bp->bio_resid == 0, ("bp->bio_resid is invalid"));
+		/*
+		 * No non-Nil data is left, complete request immediately.
+		 */
+		DPRINTF(GUZ_DBG_IO, ("%s/%s: %p: all done returning %ju "
+		    "bytes\n", __func__, gp->name, gp,
+		    (uintmax_t)bp->bio_completed));
+		g_io_deliver(bp, 0);
+		return (1);
+	}
+
+	for (i = start_blk + 1; i < end_blk; i++) {
+		/* Trim discontinuous areas if any */
+		if (!BLK_IS_CONT(sc, i)) {
+			end_blk = i;
+			break;
+		}
+	}
+
+	DPRINTF_BRNG(GUZ_DBG_IO, start_blk, end_blk, ("%s/%s: %p: "
+	    "start=%u (%ju), end=%u (%ju)\n", __func__, gp->name, bp,
+	    (u_int)start_blk, (uintmax_t)sc->toc[start_blk].offset,
+	    (u_int)end_blk, (uintmax_t)BLK_ENDS(sc, end_blk - 1)));
+
+	bp2 = g_clone_bio(bp);
+	if (bp2 == NULL) {
+		g_io_deliver(bp, ENOMEM);
+		return (1);
+	}
+	bp2->bio_done = g_uzip_read_done;
 
-	bp2->bio_offset = sc->offsets[start_blk] - 
-	    sc->offsets[start_blk] % pp->sectorsize;
+	bp2->bio_offset = TOFF_2_BOFF(sc, pp, start_blk);
 	while (1) {
-		bp2->bio_length = sc->offsets[end_blk] - bp2->bio_offset;
-		bp2->bio_length = (bp2->bio_length + pp->sectorsize - 1) /
-		    pp->sectorsize * pp->sectorsize;
+		bp2->bio_length = TLEN_2_BLEN(sc, pp, bp2, end_blk - 1);
 		if (bp2->bio_length <= MAXPHYS)
 			break;
 
@@ -215,8 +285,8 @@ g_uzip_request(struct g_geom *gp, struct bio *bp)
 		return (1);
 	}
 
-	DPRINTF(("%s/%s: %p: reading %jd bytes from offset %jd\n",
-	    __func__, gp->name, bp,
+	DPRINTF_BRNG(GUZ_DBG_IO, start_blk, end_blk, ("%s/%s: %p: "
+	    "reading %jd bytes from offset %jd\n", __func__, gp->name, bp,
 	    (intmax_t)bp2->bio_length, (intmax_t)bp2->bio_offset));
 
 	g_io_request(bp2, cp);
@@ -224,21 +294,36 @@ g_uzip_request(struct g_geom *gp, struct bio *bp)
 }
 
 static void
-g_uzip_done(struct bio *bp)
+g_uzip_read_done(struct bio *bp)
+{
+	struct bio *bp2;
+	struct g_geom *gp;
+	struct g_uzip_softc *sc;
+
+	bp2 = bp->bio_parent;
+	gp = bp2->bio_to->geom;
+	sc = gp->softc;
+
+	mtx_lock(&sc->queue_mtx);
+	bioq_disksort(&sc->bio_queue, bp);
+	mtx_unlock(&sc->queue_mtx);
+	wakeup(sc);
+}
+
+static void
+g_uzip_do(struct g_uzip_softc *sc, struct bio *bp)
 {
-	z_stream zs;
 	struct bio *bp2;
 	struct g_provider *pp;
 	struct g_consumer *cp;
 	struct g_geom *gp;
-	struct g_uzip_softc *sc;
 	char *data, *data2;
 	off_t ofs;
-	size_t blk, blkofs, len, ulen;
+	size_t blk, blkofs, len, ulen, firstblk;
+	int err;
 
 	bp2 = bp->bio_parent;
 	gp = bp2->bio_to->geom;
-	sc = gp->softc;
 
 	cp = LIST_FIRST(&gp->consumer);
 	pp = cp->provider;
@@ -253,46 +338,47 @@ g_uzip_done(struct bio *bp)
 		goto done;
 	}
 
-	zs.zalloc = z_alloc;
-	zs.zfree = z_free;
-	if (inflateInit(&zs) != Z_OK) {
-		bp2->bio_error = EILSEQ;
-		goto done;
-	}
-
 	ofs = bp2->bio_offset + bp2->bio_completed;
-	blk = ofs / sc->blksz;
+	firstblk = blk = ofs / sc->blksz;
 	blkofs = ofs % sc->blksz;
-	data = bp->bio_data + sc->offsets[blk] % pp->sectorsize;
+	data = bp->bio_data + sc->toc[blk].offset % pp->sectorsize;
 	data2 = bp2->bio_data + bp2->bio_completed;
 	while (bp->bio_completed && bp2->bio_resid) {
+		if (blk > firstblk && !BLK_IS_CONT(sc, blk)) {
+			DPRINTF_BLK(GUZ_DBG_IO, blk, ("%s/%s: %p: backref'ed "
+			    "cluster #%u requested, looping around\n",
+			    __func__, gp->name, bp2, (u_int)blk));
+			goto done;
+		}
 		ulen = MIN(sc->blksz - blkofs, bp2->bio_resid);
-		len = sc->offsets[blk + 1] - sc->offsets[blk];
-		DPRINTF(("%s/%s: %p/%ju: data2=%p, ulen=%u, data=%p, len=%u\n",
-		    __func__, gp->name, gp, bp->bio_completed,
-		    data2, (u_int)ulen, data, (u_int)len));
+		len = sc->toc[blk].blen;
+		DPRINTF(GUZ_DBG_IO, ("%s/%s: %p/%ju: data2=%p, ulen=%u, "
+		    "data=%p, len=%u\n", __func__, gp->name, gp,
+		    bp->bio_completed, data2, (u_int)ulen, data, (u_int)len));
 		if (len == 0) {
 			/* All zero block: no cache update */
 			bzero(data2, ulen);
 		} else if (len <= bp->bio_completed) {
-			zs.next_in = data;
-			zs.avail_in = len;
-			zs.next_out = sc->last_buf;
-			zs.avail_out = sc->blksz;
 			mtx_lock(&sc->last_mtx);
-			if (inflate(&zs, Z_FINISH) != Z_STREAM_END) {
+			err = sc->dcp->decompress(sc->dcp, gp->name, data,
+			    len, sc->last_buf);
+			if (err != 0) {
 				sc->last_blk = -1;
 				mtx_unlock(&sc->last_mtx);
-				inflateEnd(&zs);
 				bp2->bio_error = EILSEQ;
+				DPRINTF(GUZ_DBG_ERR, ("%s/%s: decompress"
+				    "(%p) failed\n", __func__, gp->name,
+				    sc->dcp));
 				goto done;
 			}
 			sc->last_blk = blk;
 			memcpy(data2, sc->last_buf + blkofs, ulen);
 			mtx_unlock(&sc->last_mtx);
-			if (inflateReset(&zs) != Z_OK) {
-				inflateEnd(&zs);
+			err = sc->dcp->rewind(sc->dcp, gp->name);
+			if (err != 0) {
 				bp2->bio_error = EILSEQ;
+				DPRINTF(GUZ_DBG_ERR, ("%s/%s: rewind(%p) "
+				    "failed\n", __func__, gp->name, sc->dcp));
 				goto done;
 			}
 			data += len;
@@ -307,9 +393,6 @@ g_uzip_done(struct bio *bp)
 		blk++;
 	}
 
-	if (inflateEnd(&zs) != Z_OK)
-		bp2->bio_error = EILSEQ;
-
 done:
 	/* Finish processing the request. */
 	free(bp->bio_data, M_GEOM_UZIP);
@@ -330,9 +413,9 @@ g_uzip_start(struct bio *bp)
 	pp = bp->bio_to;
 	gp = pp->geom;
 
-	DPRINTF(("%s/%s: %p: cmd=%d, offset=%jd, length=%jd, buffer=%p\n",
-	    __func__, gp->name, bp, bp->bio_cmd, (intmax_t)bp->bio_offset,
-	    (intmax_t)bp->bio_length, bp->bio_data));
+	DPRINTF(GUZ_DBG_IO, ("%s/%s: %p: cmd=%d, offset=%jd, length=%jd, "
+	    "buffer=%p\n", __func__, gp->name, bp, bp->bio_cmd,
+	    (intmax_t)bp->bio_offset, (intmax_t)bp->bio_length, bp->bio_data));
 
 	sc = gp->softc;
 	sc->req_total++;
@@ -392,6 +475,92 @@ g_uzip_spoiled(struct g_consumer *cp)
 	g_wither_geom(gp, ENXIO);
 }
 
+static int
+g_uzip_parse_toc(struct g_uzip_softc *sc, struct g_provider *pp,
+    struct g_geom *gp)
+{
+	uint32_t i, j, backref_to;
+	uint64_t max_offset, min_offset;
+
+	min_offset = sizeof(struct cloop_header) +
+	    (sc->nblocks + 1) * sizeof(uint64_t);
+	max_offset = sc->toc[0].offset - 1;
+	for (i = 0; i < sc->nblocks; i++) {
+		/* First do some bounds checking */
+		if ((sc->toc[i].offset < min_offset) ||
+		    (sc->toc[i].offset >= pp->mediasize)) {
+			goto error_offset;
+		}
+		DPRINTF_BLK(GUZ_DBG_IO, i, ("%s: cluster #%u "
+		    "sc->toc[i].offset=%ju max_offset=%ju\n", gp->name,
+		    (u_int)i, (uintmax_t)sc->toc[i].offset,
+		    (uintmax_t)max_offset));
+		backref_to = BLEN_UNDEF;
+		if (sc->toc[i].offset < max_offset) {
+			/*
+			 * For the backref'ed blocks search already parsed
+			 * TOC entries for the matching offset and copy the
+			 * size from matched entry.
+			 */
+			for (j = 0; j <= i; j++) {
+                                if (sc->toc[j].offset == sc->toc[i].offset &&
+				    !BLK_IS_NIL(sc, j)) {
+                                        break;
+                                }
+                                if (j != i) {
+					continue;
+				}
+				DPRINTF(GUZ_DBG_ERR, ("%s: cannot match "
+				    "backref'ed offset at cluster #%u\n",
+				    gp->name, i));
+				return (-1);
+			}
+			sc->toc[i].blen = sc->toc[j].blen;
+			backref_to = j;
+		} else {
+			/*
+			 * For the "normal blocks" seek forward until we hit
+			 * block whose offset is larger than ours and assume
+			 * it's going to be the next one.
+			 */
+			for (j = i + 1; j < sc->nblocks; j++) {
+				if (sc->toc[j].offset > max_offset) {
+					break;
+				}
+			}
+			sc->toc[i].blen = sc->toc[j].offset -
+			    sc->toc[i].offset;
+			if (BLK_ENDS(sc, i) > pp->mediasize) {
+				DPRINTF(GUZ_DBG_ERR, ("%s: cluster #%u "
+				    "extends past media boundary (%ju > %ju)\n",
+				    gp->name, (u_int)i,
+				    (uintmax_t)BLK_ENDS(sc, i),
+				    (intmax_t)pp->mediasize));
+				return (-1);
+			}
+			KASSERT(max_offset <= sc->toc[i].offset, (
+			    "%s: max_offset is incorrect: %ju",
+			    gp->name, (uintmax_t)max_offset));
+			max_offset = BLK_ENDS(sc, i) - 1;
+		}
+		DPRINTF_BLK(GUZ_DBG_TOC, i, ("%s: cluster #%u, original %u "
+		    "bytes, in %u bytes", gp->name, i, sc->blksz,
+		    sc->toc[i].blen));
+		if (backref_to != BLEN_UNDEF) {
+			DPRINTF_BLK(GUZ_DBG_TOC, i, (" (->#%u)",
+			    (u_int)backref_to));
+		}
+		DPRINTF_BLK(GUZ_DBG_TOC, i, ("\n"));
+	}
+	return (0);
+
+error_offset:
+	DPRINTF(GUZ_DBG_ERR, ("%s: cluster #%u: invalid offset %ju, "
+	    "min_offset=%ju mediasize=%jd\n", gp->name, (u_int)i,
+	    sc->toc[i].offset, min_offset, pp->mediasize));
+	return (-1);
+}
+
 static struct g_geom *
 g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 {
@@ -403,6 +572,10 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 	struct g_geom *gp;
 	struct g_provider *pp2;
 	struct g_uzip_softc *sc;
+	enum {
+		GEOM_UZIP = 1,
+		GEOM_ULZMA
+	} type;
 
 	g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name);
 	g_topology_assert();
@@ -422,10 +595,7 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 	if (error == 0)
 		error = g_access(cp, 1, 0, 0);
 	if (error) {
-		g_detach(cp);
-		g_destroy_consumer(cp);
-		g_destroy_geom(gp);
-		return (NULL);
+		goto e1;
 	}
 	g_topology_unlock();
 
@@ -433,22 +603,47 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 	 * Read cloop header, look for CLOOP magic, perform
 	 * other validity checks.
 	 */
-	DPRINTF(("%s: media sectorsize %u, mediasize %jd\n",
+	DPRINTF(GUZ_DBG_INFO, ("%s: media sectorsize %u, mediasize %jd\n",
 	    gp->name, pp->sectorsize, (intmax_t)pp->mediasize));
 	buf = g_read_data(cp, 0, pp->sectorsize, NULL);
 	if (buf == NULL)
-		goto err;
+		goto e2;
 	header = (struct cloop_header *) buf;
 	if (strncmp(header->magic, CLOOP_MAGIC_START,
 	    sizeof(CLOOP_MAGIC_START) - 1) != 0) {
-		DPRINTF(("%s: no CLOOP magic\n", gp->name));
-		goto err;
-	}
-	if (header->magic[0x0b] != 'V' || header->magic[0x0c] < '2') {
-		DPRINTF(("%s: image version too old\n", gp->name));
-		goto err;
+		DPRINTF(GUZ_DBG_ERR, ("%s: no CLOOP magic\n", gp->name));
+		goto e3;
 	}
 
+	switch (header->magic[CLOOP_OFS_COMPR]) {
+	case CLOOP_COMP_LZMA:
+	case CLOOP_COMP_LZMA_DDP:
+		type = GEOM_ULZMA;
+		if (header->magic[CLOOP_OFS_VERSN] < CLOOP_MINVER_LZMA) {
+			DPRINTF(GUZ_DBG_ERR, ("%s: image version too old\n",
+			    gp->name));
+			goto e3;
+		}
+		DPRINTF(GUZ_DBG_INFO, ("%s: GEOM_UZIP_LZMA image found\n",
+		    gp->name));
+		break;
+	case CLOOP_COMP_LIBZ:
+	case CLOOP_COMP_LIBZ_DDP:
+		type = GEOM_UZIP;
+		if (header->magic[CLOOP_OFS_VERSN] < CLOOP_MINVER_ZLIB) {
+			DPRINTF(GUZ_DBG_ERR, ("%s: image version too old\n",
+			    gp->name));
+			goto e3;
+		}
+		DPRINTF(GUZ_DBG_INFO, ("%s: GEOM_UZIP_ZLIB image found\n",
+		    gp->name));
+		break;
+	default:
+		DPRINTF(GUZ_DBG_ERR, ("%s: unsupported image type\n",
+		    gp->name));
+                goto e3;
+        }
+
 	/*
 	 * Initialize softc and read offsets.
 	 */
@@ -459,7 +654,7 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 	if (sc->blksz % 512 != 0) {
 		printf("%s: block size (%u) should be multiple of 512.\n",
 		    gp->name, sc->blksz);
-		goto err;
+		goto e4;
 	}
 	if (sc->blksz > MAX_BLKSZ) {
 		printf("%s: block size (%u) should not be larger than %d.\n",
@@ -470,15 +665,17 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 	    total_offsets * sizeof(uint64_t) > pp->mediasize) {
 		printf("%s: media too small for %u blocks\n",
 		    gp->name, sc->nblocks);
-		goto err;
+		goto e4;
 	}
-	sc->offsets = malloc(
-	    total_offsets * sizeof(uint64_t), M_GEOM_UZIP, M_WAITOK);
+	sc->toc = malloc(total_offsets * sizeof(struct g_uzip_blk),
+	    M_GEOM_UZIP, M_WAITOK | M_ZERO);
 	offsets_read = MIN(total_offsets,
 	    (pp->sectorsize - sizeof(*header)) / sizeof(uint64_t));
-	for (i = 0; i < offsets_read; i++)
-		sc->offsets[i] = be64toh(((uint64_t *) (header + 1))[i]);
-	DPRINTF(("%s: %u offsets in the first sector\n",
+	for (i = 0; i < offsets_read; i++) {
+		sc->toc[i].offset = be64toh(((uint64_t *) (header + 1))[i]);
+		sc->toc[i].blen = BLEN_UNDEF;
+	}
+	DPRINTF(GUZ_DBG_INFO, ("%s: %u offsets in the first sector\n",
 	       gp->name, offsets_read));
 	for (blk = 1; offsets_read < total_offsets; blk++) {
 		uint32_t nread;
@@ -487,25 +684,59 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 		buf = g_read_data(
 		    cp, blk * pp->sectorsize, pp->sectorsize, NULL);
 		if (buf == NULL)
-			goto err;
+			goto e5;
 		nread = MIN(total_offsets - offsets_read,
 		     pp->sectorsize / sizeof(uint64_t));
-		DPRINTF(("%s: %u offsets read from sector %d\n",
+		DPRINTF(GUZ_DBG_TOC, ("%s: %u offsets read from sector %d\n",
 		    gp->name, nread, blk));
 		for (i = 0; i < nread; i++) {
-			sc->offsets[offsets_read + i] =
+			sc->toc[offsets_read + i].offset =
 			    be64toh(((uint64_t *) buf)[i]);
+			sc->toc[offsets_read + i].blen = BLEN_UNDEF;
 		}
 		offsets_read += nread;
 	}
 	free(buf, M_GEOM);
-	DPRINTF(("%s: done reading offsets\n", gp->name));
+	buf = NULL;
+	offsets_read -= 1;
+	DPRINTF(GUZ_DBG_INFO, ("%s: done reading %u block offsets from %u "
+	    "sectors\n", gp->name, offsets_read, blk));
+	if (sc->nblocks != offsets_read) {
+		DPRINTF(GUZ_DBG_ERR, ("%s: read %s offsets than expected "
+		    "blocks\n", gp->name,
+		    sc->nblocks < offsets_read ? "more" : "less"));
+		goto e5;
+	}
+	/* Massage TOC (table of contents), make sure it is sound */
+	if (g_uzip_parse_toc(sc, pp, gp) != 0) {
+		DPRINTF(GUZ_DBG_ERR, ("%s: TOC error\n", gp->name));
+		goto e5;
+	}
 	mtx_init(&sc->last_mtx, "geom_uzip cache", NULL, MTX_DEF);
+	mtx_init(&sc->queue_mtx, "geom_uzip wrkthread", NULL, MTX_DEF);
+	bioq_init(&sc->bio_queue);
 	sc->last_blk = -1;
 	sc->last_buf = malloc(sc->blksz, M_GEOM_UZIP, M_WAITOK);
 	sc->req_total = 0;
 	sc->req_cached = 0;
 
+	if (type == GEOM_UZIP) {
+		sc->dcp = g_uzip_zlib_ctor(sc->blksz);
+	} else {
+		sc->dcp = g_uzip_lzma_ctor(sc->blksz);
+	}
+	if (sc->dcp == NULL) {
+		goto e6;
+	}
+
+	sc->uzip_do = &g_uzip_do;
+
+	error = kproc_create(g_uzip_wrkthr, sc, &sc->procp, 0, 0, "%s",
+	    gp->name);
+	if (error != 0) {
+		goto e7;
+	}
+
 	g_topology_lock();
 	pp2 = g_new_providerf(gp, "%s", gp->name);
 	pp2->sectorsize = 512;
@@ -515,22 +746,31 @@ g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags)
 	g_error_provider(pp2, 0);
 	g_access(cp, -1, 0, 0);
 
-	DPRINTF(("%s: taste ok (%d, %jd), (%d, %d), %x\n",
-	    gp->name,
-	    pp2->sectorsize, (intmax_t)pp2->mediasize,
+	DPRINTF(GUZ_DBG_INFO, ("%s: taste ok (%d, %jd), (%d, %d), %x\n",
+	    gp->name, pp2->sectorsize, (intmax_t)pp2->mediasize,
 	    pp2->stripeoffset, pp2->stripesize, pp2->flags));
-	DPRINTF(("%s: %u x %u blocks\n", gp->name, sc->nblocks, sc->blksz));
+	DPRINTF(GUZ_DBG_INFO, ("%s: %u x %u blocks\n", gp->name, sc->nblocks,
+	    sc->blksz));
 	return (gp);
 
-err:
-	g_topology_lock();
-	g_access(cp, -1, 0, 0);
-	if (buf != NULL)
+e7:
+	sc->dcp->free(sc->dcp);
+e6:
+	free(sc->last_buf, M_GEOM);
+	mtx_destroy(&sc->queue_mtx);
+	mtx_destroy(&sc->last_mtx);
+e5:
+	free(sc->toc, M_GEOM);
+e4:
+	free(gp->softc, M_GEOM_UZIP);
+e3:
+	if (buf != NULL) {
 		free(buf, M_GEOM);
-	if (gp->softc != NULL) {
-		g_uzip_softc_free(gp->softc, NULL);
-		gp->softc = NULL;
 	}
+e2:
+	g_topology_lock();
+	g_access(cp, -1, 0, 0);
+e1:
 	g_detach(cp);
 	g_destroy_consumer(cp);
 	g_destroy_geom(gp);
@@ -547,7 +787,8 @@ g_uzip_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp)
 	g_topology_assert();
 
 	if (gp->softc == NULL) {
-		DPRINTF(("%s(%s): gp->softc == NULL\n", __func__, gp->name));
+		DPRINTF(GUZ_DBG_ERR, ("%s(%s): gp->softc == NULL\n", __func__,
+		    gp->name));
 		return (ENXIO);
 	}
 
diff --git a/sys/geom/uzip/g_uzip.h b/sys/geom/uzip/g_uzip.h
new file mode 100644
index 0000000..6decc41
--- /dev/null
+++ b/sys/geom/uzip/g_uzip.h
@@ -0,0 +1,37 @@
+/*-
+ * Copyright (c) 2004 Max Khon
+ * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef	__GEOM_G_UZIP_H__
+#define	__GEOM_G_UZIP_H__
+
+MALLOC_DECLARE(M_GEOM_UZIP);
+
+#define DEFINE_RAW_METHOD(func, rval, args...) typedef rval (*func##_t)(args)
+
+#endif	/* __GEOM_G_UZIP_H__ */
diff --git a/sys/geom/uzip/g_uzip_cloop.h b/sys/geom/uzip/g_uzip_cloop.h
new file mode 100644
index 0000000..219a7b6
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_cloop.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/* CLOOP format and related constants */
+
+/*
+ * Integer values (block size, number of blocks, offsets)
+ * are stored in big-endian (network) order on disk.
+ */
+
+#define CLOOP_MAGIC_LEN 128
+#define CLOOP_OFS_COMPR 0x0b
+#define CLOOP_OFS_VERSN (CLOOP_OFS_COMPR + 1)
+
+#define CLOOP_MAJVER_2	'2'
+#define CLOOP_MAJVER_3	'3'
+
+#define	CLOOP_COMP_LIBZ		'V'
+#define	CLOOP_COMP_LIBZ_DDP	'v'
+#define	CLOOP_COMP_LZMA		'L'
+#define	CLOOP_COMP_LZMA_DDP	'l'
+
+#define	CLOOP_MINVER_LZMA	CLOOP_MAJVER_3
+#define	CLOOP_MINVER_ZLIB	CLOOP_MAJVER_2
+
+struct cloop_header {
+        char magic[CLOOP_MAGIC_LEN];    /* cloop magic */
+        uint32_t blksz;                 /* block size */
+        uint32_t nblocks;               /* number of blocks */
+};
diff --git a/sys/geom/uzip/g_uzip_dapi.h b/sys/geom/uzip/g_uzip_dapi.h
new file mode 100644
index 0000000..0689c32
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_dapi.h
@@ -0,0 +1,41 @@
+/*-
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+struct g_uzip_dapi;
+
+DEFINE_RAW_METHOD(g_uzip_dapi_decompress, int, struct g_uzip_dapi *,
+    const char *, void *, size_t, void *);
+DEFINE_RAW_METHOD(g_uzip_dapi_free, void, struct g_uzip_dapi *);
+DEFINE_RAW_METHOD(g_uzip_dapi_rewind, int, struct g_uzip_dapi *, const char *);
+
+struct g_uzip_dapi {
+	g_uzip_dapi_decompress_t decompress;
+	g_uzip_dapi_free_t free;
+	g_uzip_dapi_rewind_t rewind;
+	void *pvt;
+};
diff --git a/sys/geom/uzip/g_uzip_lzma.c b/sys/geom/uzip/g_uzip_lzma.c
new file mode 100644
index 0000000..0a981ba
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_lzma.c
@@ -0,0 +1,111 @@
+/*-
+ * Copyright (c) 2004 Max Khon
+ * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * Copyright (c) 2010-2012 Aleksandr Rybalko
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/malloc.h>
+
+#include <contrib/xz-embedded/linux/include/linux/xz.h>
+
+#include <geom/uzip/g_uzip.h>
+#include <geom/uzip/g_uzip_dapi.h>
+#include <geom/uzip/g_uzip_lzma.h>
+
+struct g_uzip_lzma {
+	struct g_uzip_dapi pub;
+	/* XZ decoder structs */
+	struct xz_buf b;
+	struct xz_dec *s;
+};
+
+static int g_uzip_lzma_nop(struct g_uzip_dapi *, const char *);
+
+static void
+g_uzip_lzma_free(struct g_uzip_dapi *lzpp)
+{
+	struct g_uzip_lzma *lzp;
+
+	lzp = (struct g_uzip_lzma *)lzpp->pvt;
+	if (lzp->s != NULL) {
+		xz_dec_end(lzp->s);
+		lzp->s = NULL;
+	}
+
+	free(lzp, M_GEOM_UZIP);
+}
+
+static int
+g_uzip_lzma_decompress(struct g_uzip_dapi *lzpp, const char *gp_name,
+    void *ibp, size_t ilen, void *obp)
+{
+	struct g_uzip_lzma *lzp;
+	int err;
+
+	lzp = (struct g_uzip_lzma *)lzpp->pvt;
+
+	lzp->b.in = ibp;
+	lzp->b.out = obp;
+	lzp->b.in_pos = lzp->b.out_pos = 0;
+	lzp->b.in_size = ilen;
+	lzp->b.out_size = (size_t)-1;
+	err = (xz_dec_run(lzp->s, &lzp->b) != XZ_STREAM_END) ? 1 : 0;
+	/* TODO decoder recovery, if needed */
+
+	return (err);
+}
+
+struct g_uzip_dapi *
+g_uzip_lzma_ctor(uint32_t blksz)
+{
+	struct g_uzip_lzma *lzp;
+
+	lzp = malloc(sizeof(struct g_uzip_lzma), M_GEOM_UZIP, M_WAITOK);
+	xz_crc32_init();
+	lzp->s = xz_dec_init(XZ_SINGLE, 0);
+	if (lzp->s == NULL) {
+		goto e1;
+	}
+	lzp->pub.decompress = &g_uzip_lzma_decompress;
+	lzp->pub.free = &g_uzip_lzma_free;
+	lzp->pub.rewind = &g_uzip_lzma_nop;
+	lzp->pub.pvt = lzp;
+	return (&lzp->pub);
+e1:
+        free(lzp, M_GEOM_UZIP);
+        return (NULL);
+}
+
+static int
+g_uzip_lzma_nop(struct g_uzip_dapi *zpp, const char *gp_name)
+{
+
+        return (0);
+}
diff --git a/sys/geom/uzip/g_uzip_lzma.h b/sys/geom/uzip/g_uzip_lzma.h
new file mode 100644
index 0000000..f9f8a27
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_lzma.h
@@ -0,0 +1,32 @@
+/*-
+ * Copyright (c) 2004 Max Khon
+ * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * Copyright (c) 2010-2012 Aleksandr Rybalko
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+struct g_uzip_dapi *g_uzip_lzma_ctor(uint32_t);
diff --git a/sys/geom/uzip/g_uzip_softc.h b/sys/geom/uzip/g_uzip_softc.h
new file mode 100644
index 0000000..1d12ac0
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_softc.h
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 2004 Max Khon
+ * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+struct g_uzip_softc;
+struct bio;
+
+DEFINE_RAW_METHOD(g_uzip_do, void, struct g_uzip_softc *, struct bio *);
+
+struct g_uzip_softc {
+	uint32_t blksz;                 /* block size */
+	uint32_t nblocks;               /* number of blocks */
+	struct g_uzip_blk *toc;         /* table of contents */
+
+	struct mtx last_mtx;
+	uint32_t last_blk;              /* last blk no */
+	char *last_buf;                 /* last blk data */
+	int req_total;                  /* total requests */
+	int req_cached;                 /* cached requests */
+	struct g_uzip_dapi *dcp;        /* decompressor instance */
+
+	g_uzip_do_t uzip_do;
+
+	struct proc *procp;
+	struct bio_queue_head bio_queue; 
+	struct mtx queue_mtx;
+	unsigned wrkthr_flags;
+#define	GUZ_SHUTDOWN	(0x1 << 0)
+#define	GUZ_EXITING	(0x1 << 1)
+};
diff --git a/sys/geom/uzip/g_uzip_wrkthr.c b/sys/geom/uzip/g_uzip_wrkthr.c
new file mode 100644
index 0000000..ad24cb8
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_wrkthr.c
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/bio.h>
+#include <sys/proc.h>
+#include <sys/sched.h>
+#include <sys/kthread.h>
+#include <sys/malloc.h>
+
+#include <geom/uzip/g_uzip.h>
+#include <geom/uzip/g_uzip_softc.h>
+#include <geom/uzip/g_uzip_wrkthr.h>
+
+void
+g_uzip_wrkthr(void *arg)
+{
+	struct g_uzip_softc *sc;
+	struct bio *bp;
+
+	sc = (struct g_uzip_softc *)arg;
+	thread_lock(curthread);
+	sched_prio(curthread, PRIBIO);
+	thread_unlock(curthread);
+
+	for (;;) {
+		mtx_lock(&sc->queue_mtx);
+		if (sc->wrkthr_flags & GUZ_SHUTDOWN) {
+			sc->wrkthr_flags |= GUZ_EXITING;
+			mtx_unlock(&sc->queue_mtx);
+			kproc_exit(0);
+		}
+		bp = bioq_takefirst(&sc->bio_queue);
+		if (!bp) {
+			msleep(sc, &sc->queue_mtx, PRIBIO | PDROP,
+			    "wrkwait", 0);
+			continue;
+		}
+		mtx_unlock(&sc->queue_mtx);
+		sc->uzip_do(sc, bp);
+	}
+}
diff --git a/usr.bin/truss/cloudabi.h b/sys/geom/uzip/g_uzip_wrkthr.h
index abc8c0c..8492378 100644
--- a/usr.bin/truss/cloudabi.h
+++ b/sys/geom/uzip/g_uzip_wrkthr.h
@@ -1,5 +1,6 @@
 /*-
- * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -25,4 +26,5 @@
  * $FreeBSD$
  */
 
-long	cloudabi_convert_errno(long);
+void g_uzip_wrkthr(void *);
+
diff --git a/sys/geom/uzip/g_uzip_zlib.c b/sys/geom/uzip/g_uzip_zlib.c
new file mode 100644
index 0000000..cecac6e
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_zlib.c
@@ -0,0 +1,137 @@
+/*-
+ * Copyright (c) 2004 Max Khon
+ * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+
+#include <sys/zlib.h>
+
+#include <geom/uzip/g_uzip.h>
+#include <geom/uzip/g_uzip_dapi.h>
+#include <geom/uzip/g_uzip_zlib.h>
+
+struct g_uzip_zlib {
+	uint32_t blksz;
+	struct g_uzip_dapi pub;
+	/* Zlib decoder structs */
+	z_stream zs;
+};
+
+static void *z_alloc(void *, u_int, u_int);
+static void z_free(void *, void *);
+static int g_uzip_zlib_rewind(struct g_uzip_dapi *, const char *);
+
+static void
+g_uzip_zlib_free(struct g_uzip_dapi *zpp)
+{
+	struct g_uzip_zlib *zp;
+
+	zp = (struct g_uzip_zlib *)zpp->pvt;
+	inflateEnd(&zp->zs);
+	free(zp, M_GEOM_UZIP);
+}
+
+static int
+g_uzip_zlib_decompress(struct g_uzip_dapi *zpp, const char *gp_name, void *ibp,
+    size_t ilen, void *obp)
+{
+	int err;
+	struct g_uzip_zlib *zp;
+
+	zp = (struct g_uzip_zlib *)zpp->pvt;
+
+	zp->zs.next_in = ibp;
+	zp->zs.avail_in = ilen;
+	zp->zs.next_out = obp;
+	zp->zs.avail_out = zp->blksz;
+
+	err = (inflate(&zp->zs, Z_FINISH) != Z_STREAM_END) ? 1 : 0;
+	if (err != 0) {
+		printf("%s: UZIP(zlib) inflate() failed\n", gp_name);
+	}
+	return (err);
+}
+
+static int
+g_uzip_zlib_rewind(struct g_uzip_dapi *zpp, const char *gp_name)
+{
+	int err;
+	struct g_uzip_zlib *zp;
+
+	zp = (struct g_uzip_zlib *)zpp->pvt;
+
+	err = 0;
+	if (inflateReset(&zp->zs) != Z_OK) {
+		printf("%s: UZIP(zlib) decoder reset failed\n", gp_name);
+		err = 1;
+	}
+	return (err);
+}
+
+struct g_uzip_dapi *
+g_uzip_zlib_ctor(uint32_t blksz)
+{
+	struct g_uzip_zlib *zp;
+
+	zp = malloc(sizeof(struct g_uzip_zlib), M_GEOM_UZIP, M_WAITOK);
+	zp->zs.zalloc = z_alloc;
+	zp->zs.zfree = z_free;
+	if (inflateInit(&zp->zs) != Z_OK) {
+		goto e1;
+	}
+	zp->blksz = blksz;
+	zp->pub.decompress = &g_uzip_zlib_decompress;
+	zp->pub.free = &g_uzip_zlib_free;
+	zp->pub.rewind = &g_uzip_zlib_rewind;
+	zp->pub.pvt = (void *)zp;
+	return (&zp->pub);
+e1:
+	free(zp, M_GEOM_UZIP);
+	return (NULL);
+}
+
+static void *
+z_alloc(void *nil, u_int type, u_int size)
+{
+        void *ptr;
+
+        ptr = malloc(type * size, M_GEOM_UZIP, M_NOWAIT);
+
+        return (ptr);
+}
+
+static void
+z_free(void *nil, void *ptr)
+{
+
+        free(ptr, M_GEOM_UZIP);
+}
diff --git a/sys/geom/uzip/g_uzip_zlib.h b/sys/geom/uzip/g_uzip_zlib.h
new file mode 100644
index 0000000..7a767b8
--- /dev/null
+++ b/sys/geom/uzip/g_uzip_zlib.h
@@ -0,0 +1,33 @@
+/*-
+ * Copyright (c) 2004 Max Khon
+ * Copyright (c) 2014 Juniper Networks, Inc.
+ * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+struct g_geom;
+
+struct g_uzip_dapi *g_uzip_zlib_ctor(uint32_t);
diff --git a/sys/kern/kern_mib.c b/sys/kern/kern_mib.c
index 2ee260d..60c8b7e 100644
--- a/sys/kern/kern_mib.c
+++ b/sys/kern/kern_mib.c
@@ -422,7 +422,7 @@ sysctl_hostid(SYSCTL_HANDLER_ARGS)
 }
 
 SYSCTL_PROC(_kern, KERN_HOSTID, hostid,
-    CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
+    CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE | CTLFLAG_CAPRD,
     NULL, 0, sysctl_hostid, "LU", "Host ID");
 
 /*
diff --git a/sys/mips/conf/ALFA_HORNET_UB b/sys/mips/conf/ALFA_HORNET_UB
index 1986ec5..99e8c81 100644
--- a/sys/mips/conf/ALFA_HORNET_UB
+++ b/sys/mips/conf/ALFA_HORNET_UB
@@ -49,11 +49,11 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/AP121 b/sys/mips/conf/AP121
index cc49be0..3ffbd79 100644
--- a/sys/mips/conf/AP121
+++ b/sys/mips/conf/AP121
@@ -43,11 +43,11 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/AP135 b/sys/mips/conf/AP135
index 2807528..11c73ea 100644
--- a/sys/mips/conf/AP135
+++ b/sys/mips/conf/AP135
@@ -46,8 +46,8 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
@@ -64,7 +64,7 @@ device		firmware		# Used by the above
 options 	ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 
 # Default to accept
 options		IPFIREWALL_DEFAULT_TO_ACCEPT
diff --git a/sys/mips/conf/AP143 b/sys/mips/conf/AP143
index 7cf72b8..021d972 100644
--- a/sys/mips/conf/AP143
+++ b/sys/mips/conf/AP143
@@ -43,11 +43,11 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/AP91 b/sys/mips/conf/AP91
index 58e7073..c5e6c56 100644
--- a/sys/mips/conf/AP91
+++ b/sys/mips/conf/AP91
@@ -38,9 +38,9 @@ options 	NO_SWAPPING
 # options 	MSDOSFS
 
 # uncompress - to boot read-only lzma natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+device		geom_uzip
+options 	GEOM_UZIP
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 # Not enough space for these..
 nooptions 	INVARIANTS
diff --git a/sys/mips/conf/AP93 b/sys/mips/conf/AP93
index b53bb74..927bf7f 100644
--- a/sys/mips/conf/AP93
+++ b/sys/mips/conf/AP93
@@ -26,9 +26,9 @@ options 	AR71XX_ENV_UBOOT
 options 	MSDOSFS
 
 # uncompress - to boot read-only lzma natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+device		geom_uzip
+options 	GEOM_UZIP
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 # Used for the static uboot partition map
 device          geom_map
diff --git a/sys/mips/conf/AP96 b/sys/mips/conf/AP96
index ae7f912..30d1ff8 100644
--- a/sys/mips/conf/AP96
+++ b/sys/mips/conf/AP96
@@ -27,9 +27,9 @@ options 	AR71XX_ENV_UBOOT
 options 	MSDOSFS
 
 # uncompress - to boot read-only lzma natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+device		geom_uzip
+options 	GEOM_UZIP
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 # Used for the static uboot partition map
 device          geom_map
diff --git a/sys/mips/conf/CARAMBOLA2 b/sys/mips/conf/CARAMBOLA2
index b5b419a..033f37b 100644
--- a/sys/mips/conf/CARAMBOLA2
+++ b/sys/mips/conf/CARAMBOLA2
@@ -45,11 +45,11 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/DB120 b/sys/mips/conf/DB120
index 0924d25..a491a22 100644
--- a/sys/mips/conf/DB120
+++ b/sys/mips/conf/DB120
@@ -38,8 +38,8 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
@@ -51,4 +51,4 @@ device		firmware		# Used by the above
 options 	ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/DIR-655A1 b/sys/mips/conf/DIR-655A1
index 22004f6..4b66b91 100644
--- a/sys/mips/conf/DIR-655A1
+++ b/sys/mips/conf/DIR-655A1
@@ -41,8 +41,8 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
@@ -52,7 +52,7 @@ device		firmware		# Used by the above
 options 	ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 
 # Default to accept
 options		IPFIREWALL_DEFAULT_TO_ACCEPT
diff --git a/sys/mips/conf/DIR-825B1 b/sys/mips/conf/DIR-825B1
index 40dcbf5..3385c6b 100644
--- a/sys/mips/conf/DIR-825B1
+++ b/sys/mips/conf/DIR-825B1
@@ -54,11 +54,11 @@ options 	NO_SYSCTL_DESCR
 
 # GEOM modules
 device		geom_map	# to get access to the SPI flash partitions
-device		geom_uncompress	# compressed in-memory filesystem hackery!
-options 	GEOM_UNCOMPRESS
+device		geom_uzip	# compressed in-memory filesystem hackery!
+options 	GEOM_UZIP
 options 	GEOM_PART_GPT
 
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 options 	AR71XX_REALMEM=64*1024*1024
 
 options 	AR71XX_ENV_UBOOT
diff --git a/sys/mips/conf/DIR-825C1 b/sys/mips/conf/DIR-825C1
index 2721962..c95b2aa 100644
--- a/sys/mips/conf/DIR-825C1
+++ b/sys/mips/conf/DIR-825C1
@@ -48,7 +48,7 @@ options		AR71XX_ENV_UBOOT
 device          geom_map
 
 # uzip - to boot natively from flash
-options 	GEOM_UNCOMPRESS
+options 	GEOM_UZIP
 options         GEOM_PART_GPT
 
 # yes, this board has a PCI connected atheros device
@@ -58,11 +58,11 @@ device          firmware                # Used by the above
 options         ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options         ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options         ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 
 # In order to netboot, you have to build the mfsroot into the kernel
 # 19443712 or 19M is the biggest rootfs via netboot this thing supports
 #options         MD_ROOT         # md device usable as a potential root device
 #options         MD_ROOT_SIZE=19444
 #makeoptions     MFS_IMAGE=/tftpboot/mfsroot-dir825c1.img.ulzma
-#options         ROOTDEVNAME=\"ufs:md0.uncompress\"
+#options         ROOTDEVNAME=\"ufs:md0.uzip\"
diff --git a/sys/mips/conf/ENH200 b/sys/mips/conf/ENH200
index bece380..f9d8c0d 100644
--- a/sys/mips/conf/ENH200
+++ b/sys/mips/conf/ENH200
@@ -26,9 +26,9 @@ options 	AR71XX_ENV_UBOOT
 options 	MSDOSFS
 
 # uncompress - to boot read-only lzma natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+device		geom_uzip
+options 	GEOM_UZIP
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 # Used for the static uboot partition map
 device          geom_map
diff --git a/sys/mips/conf/MT7620 b/sys/mips/conf/MT7620
index 4c4c18a..d915517 100644
--- a/sys/mips/conf/MT7620
+++ b/sys/mips/conf/MT7620
@@ -65,7 +65,7 @@ options 	PSEUDOFS		#Pseudo-filesystem framework
 #options 	BOOTP_WIRED_TO=rt0
 #options 	BOOTP_COMPAT
 #options 	CD9660			# ISO 9660 Filesystem
-#options 	ROOTDEVNAME=\"cd9660:/dev/map/rootfs.uncompress\"
+#options 	ROOTDEVNAME=\"cd9660:/dev/map/rootfs.uzip\"
 #options 	TMPFS			# TMP Memory Filesystem
 
 options 	FFS			#Berkeley Fast Filesystem
@@ -93,7 +93,7 @@ options 	FFS			#Berkeley Fast Filesystem
 options         MROUTING                # Multicast routing
 options 	IPFIREWALL_DEFAULT_TO_ACCEPT
 
-options		GEOM_UNCOMPRESS
+options		GEOM_UZIP
 options		MD_ROOT
 options		ROOTDEVNAME=\"ufs:da0s1\"
 
diff --git a/sys/mips/conf/ONIONOMEGA b/sys/mips/conf/ONIONOMEGA
index 8b3ec46..cdc5c1f 100644
--- a/sys/mips/conf/ONIONOMEGA
+++ b/sys/mips/conf/ONIONOMEGA
@@ -45,11 +45,11 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/PB47 b/sys/mips/conf/PB47
index 8386365..0fe8c82 100644
--- a/sys/mips/conf/PB47
+++ b/sys/mips/conf/PB47
@@ -32,11 +32,11 @@ options 	AR71XX_REALMEM=64*1024*1024
 options 	MSDOSFS
 
 # uncompress - to boot read-only lzma natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device		geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/PB92 b/sys/mips/conf/PB92
index 9ed14e3..6176668 100644
--- a/sys/mips/conf/PB92
+++ b/sys/mips/conf/PB92
@@ -54,9 +54,9 @@ options         FFS                     #Berkeley Fast Filesystem
 #options         UFS_DIRHASH             #Improve performance on big directories
 
 # Support uncompress lzma rootfs
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+device		geom_uzip
+options 	GEOM_UZIP
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 # PCI bus
 device		pci
diff --git a/sys/mips/conf/PICOSTATION_M2HP b/sys/mips/conf/PICOSTATION_M2HP
index 3e738e6..aa821ad 100644
--- a/sys/mips/conf/PICOSTATION_M2HP
+++ b/sys/mips/conf/PICOSTATION_M2HP
@@ -38,9 +38,9 @@ options 	NO_SWAPPING
 # options 	MSDOSFS
 
 # uncompress - to boot read-only lzma natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+device		geom_uzip
+options 	GEOM_UZIP
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 # Not enough space for these..
 nooptions 	INVARIANTS
diff --git a/sys/mips/conf/ROUTERSTATION b/sys/mips/conf/ROUTERSTATION
index 41adccd..3dceace 100644
--- a/sys/mips/conf/ROUTERSTATION
+++ b/sys/mips/conf/ROUTERSTATION
@@ -14,8 +14,8 @@ hints		"ROUTERSTATION.hints"
 
 # GEOM modules
 device		geom_redboot	# to get access to the SPI flash partitions
-device		geom_uncompress	# compressed in-memory filesystem support
-options 	GEOM_UNCOMPRESS
+device		geom_uzip	# compressed in-memory filesystem support
+options 	GEOM_UZIP
 
 # For DOS
 options 	MSDOSFS
@@ -27,4 +27,4 @@ device		etherswitch
 device		ukswitch
 
 # Boot path - redboot MFS
-options 	ROOTDEVNAME=\"ufs:redboot/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:redboot/rootfs.uzip\"
diff --git a/sys/mips/conf/RSPRO b/sys/mips/conf/RSPRO
index 43d87b6..fa28cee 100644
--- a/sys/mips/conf/RSPRO
+++ b/sys/mips/conf/RSPRO
@@ -15,8 +15,8 @@ device		pcf2123_rtc
 
 # GEOM modules
 device		geom_redboot	# to get access to the SPI flash partitions
-device		geom_uncompress	# compressed in-memory filesystem support
-options 	GEOM_UNCOMPRESS
+device		geom_uzip	# compressed in-memory filesystem support
+options 	GEOM_UZIP
 
 # For DOS
 options 	MSDOSFS
@@ -28,5 +28,5 @@ device		etherswitch
 device		arswitch
 
 # Boot off of flash
-options 	ROOTDEVNAME=\"ufs:redboot/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:redboot/rootfs.uzip\"
 
diff --git a/sys/mips/conf/RT305X b/sys/mips/conf/RT305X
index e5e26f5..ca38c72 100644
--- a/sys/mips/conf/RT305X
+++ b/sys/mips/conf/RT305X
@@ -64,7 +64,7 @@ options 	BOOTP_NFSV3
 options 	BOOTP_WIRED_TO=rt0
 options 	BOOTP_COMPAT
 options 	CD9660			# ISO 9660 Filesystem
-options 	ROOTDEVNAME=\"cd9660:/dev/map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"cd9660:/dev/map/rootfs.uzip\"
 options 	TMPFS			# TMP Memory Filesystem
 
 #options 	FFS			#Berkeley Fast Filesystem
diff --git a/sys/mips/conf/RT5350 b/sys/mips/conf/RT5350
index b6ec20b..f897178 100644
--- a/sys/mips/conf/RT5350
+++ b/sys/mips/conf/RT5350
@@ -67,10 +67,10 @@ options 	TMPFS			# TMP Memory Filesystem
 options 	FFS			#Berkeley Fast Filesystem
 #options		ROOTDEVNAME=\"nfs:193.178.153.200:/bsdmips\"
 
-#device		geom_uncompress
-#options		GEOM_UNCOMPRESS
+#device		geom_uzip
+#options		GEOM_UZIP
 #options		MD_ROOT
-#options		ROOTDEVNAME=\"ufs:md0.uncompress\"
+#options		ROOTDEVNAME=\"ufs:md0.uzip\"
 
 # Options for making kernel less hangry
 makeoptions	INLINE_LIMIT=1024
diff --git a/sys/mips/conf/TL-ARCHERC7V2 b/sys/mips/conf/TL-ARCHERC7V2
index 21f26a4..cedd823 100644
--- a/sys/mips/conf/TL-ARCHERC7V2
+++ b/sys/mips/conf/TL-ARCHERC7V2
@@ -46,8 +46,8 @@ options 	MSDOSFS
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
@@ -64,7 +64,7 @@ device		firmware		# Used by the above
 options 	ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 
 # Default to accept
 options		IPFIREWALL_DEFAULT_TO_ACCEPT
diff --git a/sys/mips/conf/TL-WDR4300 b/sys/mips/conf/TL-WDR4300
index 3c79744..e091526 100644
--- a/sys/mips/conf/TL-WDR4300
+++ b/sys/mips/conf/TL-WDR4300
@@ -38,8 +38,8 @@ options 	MSDOSFS
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
@@ -51,4 +51,4 @@ device		firmware		# Used by the above
 options 	ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
diff --git a/sys/mips/conf/TL-WR1043NDv2 b/sys/mips/conf/TL-WR1043NDv2
index 2bcde0c..53a5847 100644
--- a/sys/mips/conf/TL-WR1043NDv2
+++ b/sys/mips/conf/TL-WR1043NDv2
@@ -34,8 +34,8 @@ options 	MSDOSFS
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
@@ -47,7 +47,7 @@ device          geom_map
 #options 	ATH_EEPROM_FIRMWARE
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 
 # Default to accept
 options		IPFIREWALL_DEFAULT_TO_ACCEPT
diff --git a/sys/mips/conf/TL-WR740Nv4 b/sys/mips/conf/TL-WR740Nv4
index 5257dd9..59bf73e 100644
--- a/sys/mips/conf/TL-WR740Nv4
+++ b/sys/mips/conf/TL-WR740Nv4
@@ -43,13 +43,13 @@ device		arswitch
 options 	AR71XX_ENV_UBOOT
 
 # uzip - to boot natively from flash
-device		geom_uncompress
-options 	GEOM_UNCOMPRESS
+device		geom_uzip
+options 	GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-# options 	ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+# options 	ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 # Note: we don't fit in 4MB flash, so the rootfs must be on USB for now
 options		ROOTDEVNAME=\"ufs:da0\"
diff --git a/sys/mips/conf/TP-WN1043ND b/sys/mips/conf/TP-WN1043ND
index c5832a2..7866de3 100644
--- a/sys/mips/conf/TP-WN1043ND
+++ b/sys/mips/conf/TP-WN1043ND
@@ -37,14 +37,14 @@ options 	MSDOSFS
 options 	AR71XX_ENV_UBOOT
 
 # uncompress - to boot natively from flash
-device         geom_uncompress
-options                GEOM_UNCOMPRESS
+device         geom_uzip
+options        GEOM_UZIP
 
 # Used for the static uboot partition map
 device          geom_map
 
 # Boot off of the rootfs, as defined in the geom_map setup.
-options                ROOTDEVNAME=\"ufs:map/rootfs.uncompress\"
+options                ROOTDEVNAME=\"ufs:map/rootfs.uzip\"
 
 # We bite the performance overhead for now; the kernel won't
 # fit if the mutexes are inlined.
diff --git a/sys/mips/conf/WZR-300HP b/sys/mips/conf/WZR-300HP
index 90c5dc6..c059dbb 100644
--- a/sys/mips/conf/WZR-300HP
+++ b/sys/mips/conf/WZR-300HP
@@ -26,9 +26,9 @@ options 	BOOTVERBOSE
 
 # GEOM modules
 device		geom_map	# to get access to the SPI flash partitions
-device		geom_uncompress	# compressed in-memory filesystem hackery!
+device		geom_uzip	# compressed in-memory filesystem hackery!
 
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 options 	AR71XX_ATH_EEPROM	# Fetch EEPROM/PCI config from flash
 options 	ATH_EEPROM_FIRMWARE	# Use EEPROM from flash
diff --git a/sys/mips/conf/WZR-HPAG300H b/sys/mips/conf/WZR-HPAG300H
index 7d01b6d..dcb36f5 100644
--- a/sys/mips/conf/WZR-HPAG300H
+++ b/sys/mips/conf/WZR-HPAG300H
@@ -25,10 +25,10 @@ options 	AR71XX_ENV_UBOOT
 options 	BOOTVERBOSE
 
 # GEOM modules
-device		geom_uncompress	# compressed in-memory filesystem hackery!
+device		geom_uzip	# compressed in-memory filesystem hackery!
 device		geom_map	# to get access to the SPI flash partitions
 
-options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uncompress\"
+options 	ROOTDEVNAME=\"ufs:/dev/map/rootfs.uzip\"
 
 options 	AR71XX_ATH_EEPROM	# Fetch EEPROM/PCI config from flash
 options 	ATH_EEPROM_FIRMWARE	# Use EEPROM from flash
diff --git a/sys/modules/geom/Makefile b/sys/modules/geom/Makefile
index f54a3e8..8d7e3c6 100644
--- a/sys/modules/geom/Makefile
+++ b/sys/modules/geom/Makefile
@@ -21,7 +21,6 @@ SUBDIR=	geom_bde \
 	geom_sched \
 	geom_shsec \
 	geom_stripe \
-	geom_uncompress \
 	geom_uzip \
 	geom_vinum \
 	geom_virstor \
diff --git a/sys/modules/geom/geom_uncompress/Makefile b/sys/modules/geom/geom_uncompress/Makefile
deleted file mode 100644
index 1bebeb5..0000000
--- a/sys/modules/geom/geom_uncompress/Makefile
+++ /dev/null
@@ -1,17 +0,0 @@
-# $FreeBSD$
-
-.PATH: ${.CURDIR}/../../../geom/uncompress \
-    ${.CURDIR}/../../../contrib/xz-embedded/freebsd/ \
-    ${.CURDIR}/../../../contrib/xz-embedded/linux/lib/xz/ \
-    ${.CURDIR}/../../../contrib/xz-embedded/linux/include/linux/ \
-    ${.CURDIR}/../../../net
-
-KMOD=	geom_uncompress
-CFLAGS+= -I${.CURDIR}/../../../geom/uncompress/ \
-	-I${.CURDIR}/../../../contrib/xz-embedded/freebsd \
-	-I${.CURDIR}/../../../contrib/xz-embedded/linux/lib/xz/
-SRCS=	g_uncompress.c xz_crc32.c xz_dec_bcj.c xz_dec_lzma2.c xz_dec_stream.c \
-    xz_malloc.c
-SRCS+=	xz.h xz_config.h xz_lzma2.h xz_malloc.h xz_private.h xz_stream.h
-
-.include <bsd.kmod.mk>
diff --git a/sys/modules/geom/geom_uzip/Makefile b/sys/modules/geom/geom_uzip/Makefile
index 3efeb80..a336f63 100644
--- a/sys/modules/geom/geom_uzip/Makefile
+++ b/sys/modules/geom/geom_uzip/Makefile
@@ -3,7 +3,20 @@
 .PATH: ${.CURDIR}/../../../geom/uzip ${.CURDIR}/../../../net
 
 KMOD=	geom_uzip
-SRCS=	g_uzip.c
+SRCS=	g_uzip.c g_uzip_zlib.c g_uzip_lzma.c g_uzip_wrkthr.c
+SRCS+=	g_uzip.h g_uzip_dapi.h g_uzip_lzma.h g_uzip_zlib.h g_uzip_softc.h \
+    g_uzip_wrkthr.h
 #CFLAGS=	-g -DINVARIANT_SUPPORT -DINVARIANTS
 
+.PATH: ${.CURDIR}/../../../contrib/xz-embedded/freebsd/ \
+	${.CURDIR}/../../../contrib/xz-embedded/linux/lib/xz/ \
+	${.CURDIR}/../../../contrib/xz-embedded/linux/include/linux/ \
+	${.CURDIR}/../../../net
+
+CFLAGS+= -I${.CURDIR}/../../../contrib/xz-embedded/freebsd \
+	-I${.CURDIR}/../../../contrib/xz-embedded/linux/lib/xz/
+SRCS+=	xz_crc32.c xz_dec_bcj.c xz_dec_lzma2.c xz_dec_stream.c \
+    xz_malloc.c
+SRCS+=  xz.h xz_config.h xz_lzma2.h xz_malloc.h xz_private.h xz_stream.h
+
 .include <bsd.kmod.mk>
diff --git a/sys/net80211/ieee80211_node.c b/sys/net80211/ieee80211_node.c
index 82cfccf..6ac3655 100644
--- a/sys/net80211/ieee80211_node.c
+++ b/sys/net80211/ieee80211_node.c
@@ -2683,7 +2683,6 @@ ieee80211_node_leave(struct ieee80211_node *ni)
 
 	IEEE80211_LOCK(ic);
 	IEEE80211_AID_CLR(vap, ni->ni_associd);
-	ni->ni_associd = 0;
 	vap->iv_sta_assoc--;
 	ic->ic_sta_assoc--;
 
diff --git a/sys/netinet/tcp_stacks/fastpath.c b/sys/netinet/tcp_stacks/fastpath.c
index 6af9212..2cf7895 100644
--- a/sys/netinet/tcp_stacks/fastpath.c
+++ b/sys/netinet/tcp_stacks/fastpath.c
@@ -2453,4 +2453,4 @@ static moduledata_t new_tcp_fastpaths = {
 };
 
 MODULE_VERSION(kern_tcpfastpaths, 1);
-DECLARE_MODULE(kern_tcpfastpaths, new_tcp_fastpaths, SI_SUB_PSEUDO, SI_ORDER_ANY);
+DECLARE_MODULE(kern_tcpfastpaths, new_tcp_fastpaths, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY);
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
index e6fdb7d..ddbd129 100644
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -263,9 +263,20 @@ static struct tcp_function_block tcp_def_funcblk = {
 	0
 };
 
+int t_functions_inited = 0;
 struct tcp_funchead t_functions;
 static struct tcp_function_block *tcp_func_set_ptr = &tcp_def_funcblk;
 
+static void
+init_tcp_functions(void)
+{
+	if (t_functions_inited == 0) {
+		TAILQ_INIT(&t_functions);
+		rw_init_flags(&tcp_function_lock, "tcp_func_lock" , 0);
+		t_functions_inited = 1;
+	}
+}
+
 static struct tcp_function_block *
 find_tcp_functions_locked(struct tcp_function_set *fs)
 {
@@ -503,6 +514,9 @@ register_tcp_functions(struct tcp_function_block *blk, int wait)
 	struct tcp_function *n;
 	struct tcp_function_set fs;
 
+	if (t_functions_inited == 0) {
+		init_tcp_functions();
+	}
 	if ((blk->tfb_tcp_output == NULL) ||
 	    (blk->tfb_tcp_do_segment == NULL) ||
 	    (blk->tfb_tcp_ctloutput == NULL) ||
@@ -681,8 +695,7 @@ tcp_init(void)
 	tcp_finwait2_timeout = TCPTV_FINWAIT2_TIMEOUT;
 	tcp_tcbhashsize = hashsize;
 	/* Setup the tcp function block list */
-	TAILQ_INIT(&t_functions);
-	rw_init_flags(&tcp_function_lock, "tcp_func_lock" , 0);
+	init_tcp_functions();
 	register_tcp_functions(&tcp_def_funcblk, M_WAITOK);
 
 	if (tcp_soreceive_stream) {
diff --git a/sys/netinet6/sctp6_usrreq.c b/sys/netinet6/sctp6_usrreq.c
index 176fc97..daae99e 100644
--- a/sys/netinet6/sctp6_usrreq.c
+++ b/sys/netinet6/sctp6_usrreq.c
@@ -1009,6 +1009,7 @@ sctp6_getaddr(struct socket *so, struct sockaddr **addr)
 			stcb = LIST_FIRST(&inp->sctp_asoc_list);
 			if (stcb == NULL) {
 				SCTP_INP_RUNLOCK(inp);
+				SCTP_FREE_SONAME(sin6);
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
 				return (ENOENT);
 			}
@@ -1028,6 +1029,7 @@ sctp6_getaddr(struct socket *so, struct sockaddr **addr)
 			if ((!fnd) || (sin_a6 == NULL)) {
 				/* punt */
 				SCTP_INP_RUNLOCK(inp);
+				SCTP_FREE_SONAME(sin6);
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
 				return (ENOENT);
 			}
diff --git a/sys/ufs/ffs/ffs_inode.c b/sys/ufs/ffs/ffs_inode.c
index b41e04b..c8dac1b 100644
--- a/sys/ufs/ffs/ffs_inode.c
+++ b/sys/ufs/ffs/ffs_inode.c
@@ -184,7 +184,7 @@ ffs_truncate(vp, length, flags, cred)
 	struct inode *ip;
 	ufs2_daddr_t bn, lbn, lastblock, lastiblock[NIADDR], indir_lbn[NIADDR];
 	ufs2_daddr_t oldblks[NDADDR + NIADDR], newblks[NDADDR + NIADDR];
-	ufs2_daddr_t count, blocksreleased = 0, datablocks;
+	ufs2_daddr_t count, blocksreleased = 0, datablocks, blkno;
 	struct bufobj *bo;
 	struct fs *fs;
 	struct buf *bp;
@@ -192,7 +192,7 @@ ffs_truncate(vp, length, flags, cred)
 	int softdeptrunc, journaltrunc;
 	int needextclean, extblocks;
 	int offset, size, level, nblocks;
-	int i, error, allerror;
+	int i, error, allerror, indiroff;
 	off_t osize;
 
 	ip = VTOI(vp);
@@ -329,16 +329,57 @@ ffs_truncate(vp, length, flags, cred)
 		ip->i_flag |= IN_CHANGE | IN_UPDATE;
 		return (ffs_update(vp, !DOINGASYNC(vp)));
 	}
-	if (DOINGSOFTDEP(vp)) {
+	/*
+	 * Lookup block number for a given offset. Zero length files
+	 * have no blocks, so return a blkno of -1.
+	 */
+	lbn = lblkno(fs, length - 1);
+	if (length == 0) {
+		blkno = -1;
+	} else if (lbn < NDADDR) {
+		blkno = DIP(ip, i_db[lbn]);
+	} else {
+		error = UFS_BALLOC(vp, lblktosize(fs, (off_t)lbn), fs->fs_bsize,
+		    cred, BA_METAONLY, &bp);
+		if (error)
+			return (error);
+		indiroff = (lbn - NDADDR) % NINDIR(fs);
+		if (ip->i_ump->um_fstype == UFS1)
+			blkno = ((ufs1_daddr_t *)(bp->b_data))[indiroff];
+		else
+			blkno = ((ufs2_daddr_t *)(bp->b_data))[indiroff];
+		/*
+		 * If the block number is non-zero, then the indirect block
+		 * must have been previously allocated and need not be written.
+		 * If the block number is zero, then we may have allocated
+		 * the indirect block and hence need to write it out.
+		 */
+		if (blkno != 0)
+			brelse(bp);
+		else if (DOINGSOFTDEP(vp) || DOINGASYNC(vp))
+			bdwrite(bp);
+		else
+			bwrite(bp);
+	}
+	/*
+	 * If the block number at the new end of the file is zero,
+	 * then we must allocate it to ensure that the last block of 
+	 * the file is allocated. Soft updates does not handle this
+	 * case, so here we have to clean up the soft updates data
+	 * structures describing the allocation past the truncation
+	 * point. Finding and deallocating those structures is a lot of
+	 * work. Since partial truncation with a hole at the end occurs
+	 * rarely, we solve the problem by syncing the file so that it
+	 * will have no soft updates data structures left.
+	 */
+	if (blkno == 0 && (error = ffs_syncvnode(vp, MNT_WAIT, 0)) != 0)
+		return (error);
+	if (blkno != 0 && DOINGSOFTDEP(vp)) {
 		if (softdeptrunc == 0 && journaltrunc == 0) {
 			/*
-			 * If a file is only partially truncated, then
-			 * we have to clean up the data structures
-			 * describing the allocation past the truncation
-			 * point. Finding and deallocating those structures
-			 * is a lot of work. Since partial truncation occurs
-			 * rarely, we solve the problem by syncing the file
-			 * so that it will have no data structures left.
+			 * If soft updates cannot handle this truncation,
+			 * clean up soft dependency data structures and
+			 * fall through to the synchronous truncation.
 			 */
 			if ((error = ffs_syncvnode(vp, MNT_WAIT, 0)) != 0)
 				return (error);
@@ -358,15 +399,17 @@ ffs_truncate(vp, length, flags, cred)
 		}
 	}
 	/*
-	 * Shorten the size of the file. If the file is not being
-	 * truncated to a block boundary, the contents of the
-	 * partial block following the end of the file must be
-	 * zero'ed in case it ever becomes accessible again because
-	 * of subsequent file growth. Directories however are not
+	 * Shorten the size of the file. If the last block of the
+	 * shortened file is unallocated, we must allocate it.
+	 * Additionally, if the file is not being truncated to a
+	 * block boundary, the contents of the partial block
+	 * following the end of the file must be zero'ed in
+	 * case it ever becomes accessible again because of
+	 * subsequent file growth. Directories however are not
 	 * zero'ed as they should grow back initialized to empty.
 	 */
 	offset = blkoff(fs, length);
-	if (offset == 0) {
+	if (blkno != 0 && offset == 0) {
 		ip->i_size = length;
 		DIP_SET(ip, i_size, length);
 	} else {
@@ -390,7 +433,7 @@ ffs_truncate(vp, length, flags, cred)
 		ip->i_size = length;
 		DIP_SET(ip, i_size, length);
 		size = blksize(fs, ip, lbn);
-		if (vp->v_type != VDIR)
+		if (vp->v_type != VDIR && offset != 0)
 			bzero((char *)bp->b_data + offset,
 			    (u_int)(size - offset));
 		/* Kirk's code has reallocbuf(bp, size, 1) here */
diff --git a/sys/x86/isa/clock.c b/sys/x86/isa/clock.c
index 8778c0d..cced5e34 100644
--- a/sys/x86/isa/clock.c
+++ b/sys/x86/isa/clock.c
@@ -166,7 +166,7 @@ clkintr(void *arg)
 		mtx_unlock_spin(&clock_lock);
 	}
 
-	if (sc && sc->et.et_active && sc->mode != MODE_STOP)
+	if (sc->et.et_active && sc->mode != MODE_STOP)
 		sc->et.et_event_cb(&sc->et, sc->et.et_arg);
 
 #ifdef DEV_MCA
diff --git a/targets/pseudo/userland/Makefile.depend b/targets/pseudo/userland/Makefile.depend
index a7130dd..cebce7c 100644
--- a/targets/pseudo/userland/Makefile.depend
+++ b/targets/pseudo/userland/Makefile.depend
@@ -297,7 +297,6 @@ DIRDEPS+= \
 	usr.bin/mklocale \
 	usr.bin/mkstr \
 	usr.bin/mktemp \
-	usr.bin/mkulzma \
 	usr.bin/mkuzip \
 	usr.bin/msgs \
 	usr.bin/mt \
diff --git a/usr.bin/Makefile b/usr.bin/Makefile
index 474bee1..a30476f 100644
--- a/usr.bin/Makefile
+++ b/usr.bin/Makefile
@@ -99,7 +99,6 @@ SUBDIR=	alias \
 	mkimg \
 	mklocale \
 	mktemp \
-	mkulzma \
 	mkuzip \
 	mt \
 	ncal \
diff --git a/usr.bin/kdump/kdump.c b/usr.bin/kdump/kdump.c
index 8fe03ea..b4a1f69 100644
--- a/usr.bin/kdump/kdump.c
+++ b/usr.bin/kdump/kdump.c
@@ -142,28 +142,6 @@ static struct ktr_header ktr_header;
 	c = ',';							\
 } while (0)
 
-#if defined(__amd64__) || defined(__i386__)
-
-void linux_ktrsysret(struct ktr_sysret *, u_int);
-
-/*
- * from linux.h
- * Linux syscalls return negative errno's, we do positive and map them
- */
-static int bsd_to_linux_errno[ELAST + 1] = {
-	-0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
-	-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
-	-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
-	-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
-	-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
-	-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
-	-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
-	-116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
-	-6,  -6, -43, -42, -75,-125, -84, -95, -16, -74,
-	-72, -67, -71
-};
-#endif
-
 struct proc_info
 {
 	TAILQ_ENTRY(proc_info)	info;
@@ -393,13 +371,7 @@ main(int argc, char *argv[])
 			ktrsyscall((struct ktr_syscall *)m, sv_flags);
 			break;
 		case KTR_SYSRET:
-#if defined(__amd64__) || defined(__i386__)
-			if ((sv_flags & SV_ABI_MASK) == SV_ABI_LINUX)
-				linux_ktrsysret((struct ktr_sysret *)m, 
-				    sv_flags);
-			else
-#endif
-				ktrsysret((struct ktr_sysret *)m, sv_flags);
+			ktrsysret((struct ktr_sysret *)m, sv_flags);
 			break;
 		case KTR_NAMEI:
 		case KTR_SYSCTL:
@@ -1366,7 +1338,8 @@ ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
 	else if (error == EJUSTRETURN)
 		printf("JUSTRETURN");
 	else {
-		printf("-1 errno %d", ktr->ktr_error);
+		printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
+		    syscallabi(sv_flags), error));
 		if (fancy)
 			printf(" %s", strerror(ktr->ktr_error));
 	}
@@ -1852,44 +1825,6 @@ ktrfaultend(struct ktr_faultend *ktr)
 	printf("\n");
 }
 
-#if defined(__amd64__) || defined(__i386__)
-void
-linux_ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
-{
-	register_t ret = ktr->ktr_retval;
-	int error = ktr->ktr_error;
-
-	syscallname(ktr->ktr_code, sv_flags);
-	printf(" ");
-
-	if (error == 0) {
-		if (fancy) {
-			printf("%ld", (long)ret);
-			if (ret < 0 || ret > 9)
-				printf("/%#lx", (unsigned long)ret);
-		} else {
-			if (decimal)
-				printf("%ld", (long)ret);
-			else
-				printf("%#lx", (unsigned long)ret);
-		}
-	} else if (error == ERESTART)
-		printf("RESTART");
-	else if (error == EJUSTRETURN)
-		printf("JUSTRETURN");
-	else {
-		if (ktr->ktr_error <= ELAST + 1)
-			error = abs(bsd_to_linux_errno[ktr->ktr_error]);
-		else
-			error = 999;
-		printf("-1 errno %d", error);
-		if (fancy)
-			printf(" %s", strerror(ktr->ktr_error));
-	}
-	putchar('\n');
-}
-#endif
-
 void
 usage(void)
 {
diff --git a/usr.bin/mkulzma/Makefile b/usr.bin/mkulzma/Makefile
deleted file mode 100644
index 15596bf..0000000
--- a/usr.bin/mkulzma/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-# $FreeBSD$
-
-PROG=	mkulzma
-MAN=	mkulzma.8
-
-LIBADD=	lzma
-
-.include <bsd.prog.mk>
diff --git a/usr.bin/mkulzma/Makefile.depend b/usr.bin/mkulzma/Makefile.depend
deleted file mode 100644
index 987c487..0000000
--- a/usr.bin/mkulzma/Makefile.depend
+++ /dev/null
@@ -1,20 +0,0 @@
-# $FreeBSD$
-# Autogenerated - do NOT edit!
-
-DIRDEPS = \
-	gnu/lib/csu \
-	gnu/lib/libgcc \
-	include \
-	include/xlocale \
-	lib/${CSU_DIR} \
-	lib/libc \
-	lib/libcompiler_rt \
-	lib/liblzma \
-	lib/libthr \
-
-
-.include <dirdeps.mk>
-
-.if ${DEP_RELDIR} == ${_DEP_RELDIR}
-# local dependencies - needed for -jN in clean tree
-.endif
diff --git a/usr.bin/mkulzma/mkulzma.8 b/usr.bin/mkulzma/mkulzma.8
deleted file mode 100644
index b4ac33f..0000000
--- a/usr.bin/mkulzma/mkulzma.8
+++ /dev/null
@@ -1,107 +0,0 @@
-.\" ----------------------------------------------------------------------------
-.\" Derived from mkuzip.8 by Aleksandr Rybalko <ray@ddteam.net>
-.\" ----------------------------------------------------------------------------
-.\" "THE BEER-WARE LICENSE" (Revision 42):
-.\" <sobomax@FreeBSD.ORG> wrote this file. As long as you retain this notice you
-.\" can do whatever you want with this stuff. If we meet some day, and you think
-.\" this stuff is worth it, you can buy me a beer in return.       Maxim Sobolev
-.\" ----------------------------------------------------------------------------
-.\"
-.\" $FreeBSD$
-.\"
-.Dd March 17, 2006
-.Dt MKULZMA 8
-.Os
-.Sh NAME
-.Nm mkulzma
-.Nd compress disk image for use with
-.Xr geom_uncompress 4
-class
-.Sh SYNOPSIS
-.Nm
-.Op Fl v
-.Op Fl o Ar outfile
-.Op Fl s Ar cluster_size
-.Ar infile
-.Sh DESCRIPTION
-The
-.Nm
-utility compresses a disk image file so that the
-.Xr geom_uncompress 4
-class will be able to decompress the resulting image at run-time.
-This allows for a significant reduction of size of disk image at
-the expense of some CPU time required to decompress the data each
-time it is read.
-The
-.Nm
-utility
-works in two phases:
-.Bl -enum
-.It
-An
-.Ar infile
-image is split into clusters; each cluster is compressed using liblzma.
-.It
-The resulting set of compressed clusters along with headers that allow
-locating each individual cluster is written to the output file.
-.El
-.Pp
-The options are:
-.Bl -tag -width indent
-.It Fl o Ar outfile
-Name of the output file
-.Ar outfile .
-The default is to use the input name with the suffix
-.Pa .ulzma .
-.It Fl s Ar cluster_size
-Split the image into clusters of
-.Ar cluster_size
-bytes, 16384 bytes by default.
-The
-.Ar cluster_size
-should be a multiple of 512 bytes.
-.It Fl v
-Display verbose messages.
-.El
-.Sh NOTES
-The compression ratio largely depends on the cluster size used.
-.\" The following two sentences are unclear: how can xz(1) be
-.\" used in a comparable fashion, and wouldn't a lzma-compressed
-.\" image suffer from larger cluster sizes as well?
-For large cluster sizes (16K and higher), typical compression ratios
-are only 1-2% less than those achieved with
-.Xr lzma 1 .
-However, it should be kept in mind that larger cluster
-sizes lead to higher overhead in the
-.Xr geom_uncompress 4
-class, as the class has to decompress the whole cluster even if
-only a few bytes from that cluster have to be read.
-.Pp
-The
-.Nm
-utility
-inserts a short shell script at the beginning of the generated image,
-which makes it possible to
-.Dq run
-the image just like any other shell script.
-The script tries to load the
-.Xr geom_uncompress 4
-class if it is not loaded, configure the image as an
-.Xr md 4
-disk device using
-.Xr mdconfig 8 ,
-and automatically mount it using
-.Xr mount_cd9660 8
-on the mount point provided as the first argument to the script.
-.Sh EXIT STATUS
-.Ex -std
-.Sh SEE ALSO
-.Xr lzma 1 ,
-.Xr geom 4 ,
-.Xr geom_uncompress 4 ,
-.Xr md 4 ,
-.Xr mdconfig 8 ,
-.Xr mount_cd9660 8
-.Sh AUTHORS
-.An Maxim Sobolev Aq Mt sobomax@FreeBSD.org
-.An Aleksandr Rybalko Aq Mt ray@ddteam.net
diff --git a/usr.bin/mkulzma/mkulzma.c b/usr.bin/mkulzma/mkulzma.c
deleted file mode 100644
index b046c1e..0000000
--- a/usr.bin/mkulzma/mkulzma.c
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * ----------------------------------------------------------------------------
- * Derived from mkuzip.c by Aleksandr Rybalko <ray@ddteam.net>
- * ----------------------------------------------------------------------------
- * "THE BEER-WARE LICENSE" (Revision 42):
- * <sobomax@FreeBSD.ORG> wrote this file. As long as you retain this notice you
- * can do whatever you want with this stuff. If we meet some day, and you think
- * this stuff is worth it, you can buy me a beer in return.       Maxim Sobolev
- * ----------------------------------------------------------------------------
- *
- * $FreeBSD$
- *
- */
-
-#include <sys/disk.h>
-#include <sys/endian.h>
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/uio.h>
-#include <netinet/in.h>
-#include <err.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <lzma.h>
-
-#define CLSTSIZE	16384
-#define DEFAULT_SUFX	".ulzma"
-
-#define USED_BLOCKSIZE DEV_BSIZE
-
-#define CLOOP_MAGIC_LEN 128
-/* Format L3.0, since we move to XZ API */
-static char CLOOP_MAGIC_START[] =
-    "#!/bin/sh\n"
-    "#L3.0\n"
-    "n=uncompress\n"
-    "m=geom_$n\n"
-    "(kldstat -m $m 2>&-||kldload $m)>&-&&"
-	"mount_cd9660 /dev/`mdconfig -af $0`.$n $1\n"
-    "exit $?\n";
-
-static char *readblock(int, char *, u_int32_t);
-static void usage(void);
-static void *safe_malloc(size_t);
-static void cleanup(void);
-
-static char *cleanfile = NULL;
-
-int main(int argc, char **argv)
-{
-	char *iname, *oname, *obuf, *ibuf;
-	int fdr, fdw, i, opt, verbose, tmp;
-	struct iovec iov[2];
-	struct stat sb;
-	uint32_t destlen;
-	uint64_t offset;
-	uint64_t *toc;
-	lzma_filter filters[2];
-	lzma_options_lzma opt_lzma;
-	lzma_ret ret;
-	lzma_stream strm = LZMA_STREAM_INIT;
-	struct cloop_header {
-		char magic[CLOOP_MAGIC_LEN];    /* cloop magic */
-		uint32_t blksz;                 /* block size */
-		uint32_t nblocks;               /* number of blocks */
-	} hdr;
-
-	memset(&hdr, 0, sizeof(hdr));
-	hdr.blksz = CLSTSIZE;
-	strcpy(hdr.magic, CLOOP_MAGIC_START);
-	oname = NULL;
-	verbose = 0;
-
-	while((opt = getopt(argc, argv, "o:s:v")) != -1) {
-		switch(opt) {
-		case 'o':
-			oname = optarg;
-			break;
-
-		case 's':
-			tmp = atoi(optarg);
-			if (tmp <= 0) {
-				errx(1,
-				    "invalid cluster size specified: %s",
-				    optarg);
-				/* Not reached */
-			}
-			if (tmp % USED_BLOCKSIZE != 0) {
-				errx(1,
-				    "cluster size should be multiple of %d",
-				    USED_BLOCKSIZE);
-				/* Not reached */
-			}
-			if ( tmp > MAXPHYS) {
-				errx(1, "cluster size is too large");
-				    /* Not reached */
-			}
-			hdr.blksz = tmp;
-			break;
-
-		case 'v':
-			verbose = 1;
-			break;
-
-		default:
-			usage();
-			/* Not reached */
-		}
-	}
-	argc -= optind;
-	argv += optind;
-
-	if (argc != 1) {
-		usage();
-		/* Not reached */
-	}
-
-	iname = argv[0];
-	if (oname == NULL) {
-		asprintf(&oname, "%s%s", iname, DEFAULT_SUFX);
-		if (oname == NULL) {
-			err(1, "can't allocate memory");
-			/* Not reached */
-		}
-	}
-
-	obuf = safe_malloc(hdr.blksz*2);
-	ibuf = safe_malloc(hdr.blksz);
-
-	signal(SIGHUP, exit);
-	signal(SIGINT, exit);
-	signal(SIGTERM, exit);
-	signal(SIGXCPU, exit);
-	signal(SIGXFSZ, exit);
-	atexit(cleanup);
-
-	fdr = open(iname, O_RDONLY);
-	if (fdr < 0) {
-		err(1, "open(%s)", iname);
-		/* Not reached */
-	}
-	if (fstat(fdr, &sb) != 0) {
-		err(1, "fstat(%s)", iname);
-		/* Not reached */
-	}
-	if (S_ISCHR(sb.st_mode)) {
-		off_t ms;
-
-		if (ioctl(fdr, DIOCGMEDIASIZE, &ms) < 0) {
-			err(1, "ioctl(DIOCGMEDIASIZE)");
-			/* Not reached */
-		}
-		sb.st_size = ms;
-	} else if (!S_ISREG(sb.st_mode)) {
-		fprintf(stderr,
-		    "%s: not a character device or regular file\n",
-		    iname);
-		exit(1);
-	}
-	hdr.nblocks = sb.st_size / hdr.blksz;
-	if ((sb.st_size % hdr.blksz) != 0) {
-		if (verbose != 0)
-			fprintf(stderr, "file size is not multiple "
-			"of %d, padding data\n", hdr.blksz);
-		hdr.nblocks++;
-	}
-	toc = safe_malloc((hdr.nblocks + 1) * sizeof(*toc));
-
-	fdw = open(oname, O_WRONLY | O_TRUNC | O_CREAT,
-		   S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
-	if (fdw < 0) {
-		err(1, "open(%s)", oname);
-		/* Not reached */
-	}
-	cleanfile = oname;
-
-	/*
-	 * Prepare header that we will write later when we have index ready.
-	 */
-	iov[0].iov_base = (char *)&hdr;
-	iov[0].iov_len = sizeof(hdr);
-	iov[1].iov_base = (char *)toc;
-	iov[1].iov_len = (hdr.nblocks + 1) * sizeof(*toc);
-	offset = iov[0].iov_len + iov[1].iov_len;
-
-	/* Reserve space for header */
-	lseek(fdw, offset, SEEK_SET);
-
-	if (verbose != 0)
-		fprintf(stderr, "data size %ju bytes, number of clusters "
-		    "%u, index length %zu bytes\n", sb.st_size,
-		    hdr.nblocks, iov[1].iov_len);
-
-	/* Init lzma encoder */
-	if (lzma_lzma_preset(&opt_lzma, LZMA_PRESET_DEFAULT))
-		errx(1, "Error loading LZMA preset");
-
-	filters[0].id = LZMA_FILTER_LZMA2;
-	filters[0].options = &opt_lzma;
-	filters[1].id = LZMA_VLI_UNKNOWN;
-
-	for(i = 0; i == 0 || ibuf != NULL; i++) {
-		ibuf = readblock(fdr, ibuf, hdr.blksz);
-		if (ibuf != NULL) {
-			destlen = hdr.blksz*2;
-
-			ret = lzma_stream_encoder(&strm, filters,
-			    LZMA_CHECK_CRC32);
-			if (ret != LZMA_OK) {
-				if (ret == LZMA_MEMLIMIT_ERROR)
-					errx(1, "can't compress data: "
-					    "LZMA_MEMLIMIT_ERROR");
-
-				errx(1, "can't compress data: "
-				    "LZMA compressor ERROR");
-			}
-
-			strm.next_in = ibuf;
-			strm.avail_in = hdr.blksz;
-			strm.next_out = obuf;
-			strm.avail_out = hdr.blksz*2;
-
-			ret = lzma_code(&strm, LZMA_FINISH);
-
-			if (ret != LZMA_STREAM_END) {
-				/* Error */
-				errx(1, "lzma_code FINISH failed, code=%d, "
-				    "pos(in=%zd, out=%zd)",
-				    ret,
-				    (hdr.blksz - strm.avail_in),
-				    (hdr.blksz*2 - strm.avail_out));
-			}
-
-			destlen -= strm.avail_out;
-
-			lzma_end(&strm);
-
-			if (verbose != 0)
-				fprintf(stderr, "cluster #%d, in %u bytes, "
-				    "out %u bytes\n", i, hdr.blksz, destlen);
-		} else {
-			destlen = USED_BLOCKSIZE - (offset % USED_BLOCKSIZE);
-			memset(obuf, 0, destlen);
-			if (verbose != 0)
-				fprintf(stderr, "padding data with %u bytes"
-				    " so that file size is multiple of %d\n",
-				    destlen,
-				    USED_BLOCKSIZE);
-		}
-		if (write(fdw, obuf, destlen) < 0) {
-			err(1, "write(%s)", oname);
-			/* Not reached */
-		}
-		toc[i] = htobe64(offset);
-		offset += destlen;
-	}
-	close(fdr);
-
-	if (verbose != 0)
-		fprintf(stderr, "compressed data to %ju bytes, saved %lld "
-		    "bytes, %.2f%% decrease.\n", offset,
-		    (long long)(sb.st_size - offset),
-		    100.0 * (long long)(sb.st_size - offset) /
-		    (float)sb.st_size);
-
-	/* Convert to big endian */
-	hdr.blksz = htonl(hdr.blksz);
-	hdr.nblocks = htonl(hdr.nblocks);
-	/* Write headers into pre-allocated space */
-	lseek(fdw, 0, SEEK_SET);
-	if (writev(fdw, iov, 2) < 0) {
-		err(1, "writev(%s)", oname);
-		/* Not reached */
-	}
-	cleanfile = NULL;
-	close(fdw);
-
-	exit(0);
-}
-
-static char *
-readblock(int fd, char *ibuf, u_int32_t clstsize)
-{
-	int numread;
-
-	bzero(ibuf, clstsize);
-	numread = read(fd, ibuf, clstsize);
-	if (numread < 0) {
-		err(1, "read() failed");
-		/* Not reached */
-	}
-	if (numread == 0) {
-		return NULL;
-	}
-	return ibuf;
-}
-
-static void
-usage(void)
-{
-
-	fprintf(stderr, "usage: mkulzma [-v] [-o outfile] [-s cluster_size] "
-	    "infile\n");
-	exit(1);
-}
-
-static void *
-safe_malloc(size_t size)
-{
-	void *retval;
-
-	retval = malloc(size);
-	if (retval == NULL) {
-		err(1, "can't allocate memory");
-		/* Not reached */
-	}
-	return retval;
-}
-
-static void
-cleanup(void)
-{
-
-	if (cleanfile != NULL)
-		unlink(cleanfile);
-}
diff --git a/usr.bin/mkuzip/Makefile b/usr.bin/mkuzip/Makefile
index 92ab43e..4050ad0 100644
--- a/usr.bin/mkuzip/Makefile
+++ b/usr.bin/mkuzip/Makefile
@@ -2,7 +2,8 @@
 
 PROG=	mkuzip
 MAN=	mkuzip.8
+SRCS=	mkuzip.c mkuz_blockcache.c mkuz_lzma.c mkuz_zlib.c
 
-LIBADD=	z
+LIBADD=	z md lzma
 
 .include <bsd.prog.mk>
diff --git a/usr.bin/mkuzip/mkuz_blockcache.c b/usr.bin/mkuzip/mkuz_blockcache.c
new file mode 100644
index 0000000..a3ac564
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_blockcache.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <md5.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if defined(MKUZ_DEBUG)
+# include <stdio.h>
+#endif
+
+#include "mkuz_blockcache.h"
+
+struct mkuz_blkcache {
+    struct mkuz_blkcache_hit hit;
+    off_t data_offset;
+    unsigned char digest[16];
+    struct mkuz_blkcache *next;
+};
+
+static struct mkuz_blkcache blkcache;
+
+struct mkuz_blkcache_hit *
+mkuz_blkcache_regblock(int fd, uint32_t blkno, off_t offset, ssize_t len,
+  void *data)
+{
+    struct mkuz_blkcache *bcep;
+    MD5_CTX mcontext;
+    off_t data_offset;
+    unsigned char mdigest[16];
+
+    data_offset = lseek(fd, 0, SEEK_CUR);
+    if (data_offset < 0) {
+        return (NULL);
+    }
+    MD5Init(&mcontext);
+    MD5Update(&mcontext, data, len);
+    MD5Final(mdigest, &mcontext);
+    if (blkcache.hit.len == 0) {
+        bcep = &blkcache;
+    } else {
+        for (bcep = &blkcache; bcep != NULL; bcep = bcep->next) {
+            if (bcep->hit.len != len)
+                continue;
+            if (memcmp(mdigest, bcep->digest, sizeof(mdigest)) == 0) {
+                break;
+            }
+        }
+        if (bcep != NULL) {
+#if defined(MKUZ_DEBUG)
+            printf("cache hit %d, %d, %d\n", (int)bcep->hit.offset, (int)data_offset, (int)len);
+#endif
+            return (&bcep->hit);
+        }
+        bcep = malloc(sizeof(struct mkuz_blkcache));
+        if (bcep == NULL)
+            return (NULL);
+        memset(bcep, '\0', sizeof(struct mkuz_blkcache));
+        bcep->next = blkcache.next;
+        blkcache.next = bcep;
+    }
+    memcpy(bcep->digest, mdigest, sizeof(mdigest));
+    bcep->data_offset = data_offset;
+    bcep->hit.offset = offset;
+    bcep->hit.len = len;
+    bcep->hit.blkno = blkno;
+    return (NULL);
+}
diff --git a/usr.bin/mkuzip/mkuz_blockcache.h b/usr.bin/mkuzip/mkuz_blockcache.h
new file mode 100644
index 0000000..2154ae8
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_blockcache.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+struct mkuz_blkcache_hit {
+    uint64_t offset;
+    ssize_t len;
+    uint32_t blkno;
+};
+
+struct mkuz_blkcache_hit *mkuz_blkcache_regblock(int, uint32_t, off_t, ssize_t,
+  void *);
diff --git a/usr.bin/mkuzip/mkuz_cloop.h b/usr.bin/mkuzip/mkuz_cloop.h
new file mode 100644
index 0000000..4ed7c50
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_cloop.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/* CLOOP format and related constants */
+
+/*
+ * Integer values (block size, number of blocks, offsets)
+ * are stored in big-endian (network) order on disk.
+ */
+
+#define CLOOP_MAGIC_LEN 128
+#define CLOOP_OFS_COMPR 0x0b
+#define CLOOP_OFS_VERSN (CLOOP_OFS_COMPR + 1)
+
+#define CLOOP_MAJVER_2	'2'
+#define CLOOP_MAJVER_3	'3'
+
+#define CLOOP_COMP_LIBZ	'V'
+#define	CLOOP_COMP_LZMA	'L'
+
+struct cloop_header {
+        char magic[CLOOP_MAGIC_LEN];    /* cloop magic */
+        uint32_t blksz;                 /* block size */
+        uint32_t nblocks;               /* number of blocks */
+};
diff --git a/usr.bin/mkuzip/mkuz_lzma.c b/usr.bin/mkuzip/mkuz_lzma.c
new file mode 100644
index 0000000..d62376e
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_lzma.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * Copyright (c) 2011 Aleksandr Rybalko <ray@ddteam.net>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <err.h>
+#include <stdint.h>
+
+#include <lzma.h>
+
+#include "mkuzip.h"
+#include "mkuz_lzma.h"
+
+#define USED_BLOCKSIZE DEV_BSIZE
+
+struct mkuz_lzma {
+	lzma_filter filters[2];
+	lzma_options_lzma opt_lzma;
+	lzma_stream strm;
+	char *obuf;
+	uint32_t blksz;
+};
+
+static struct mkuz_lzma ulzma = {.strm = LZMA_STREAM_INIT};
+
+void *
+mkuz_lzma_init(uint32_t blksz)
+{
+	if (blksz % USED_BLOCKSIZE != 0) {
+		errx(1, "cluster size should be multiple of %d",
+		    USED_BLOCKSIZE);
+		/* Not reached */
+	}
+	if (blksz > MAXPHYS) {
+		errx(1, "cluster size is too large");
+		/* Not reached */
+	}
+	ulzma.obuf = mkuz_safe_malloc(blksz * 2);
+
+	/* Init lzma encoder */
+	if (lzma_lzma_preset(&ulzma.opt_lzma, LZMA_PRESET_DEFAULT))
+		errx(1, "Error loading LZMA preset");
+
+	ulzma.filters[0].id = LZMA_FILTER_LZMA2;
+	ulzma.filters[0].options = &ulzma.opt_lzma;
+	ulzma.filters[1].id = LZMA_VLI_UNKNOWN;
+
+	ulzma.blksz = blksz;
+
+	return (ulzma.obuf);
+}
+
+void
+mkuz_lzma_compress(const char *ibuf, uint32_t *destlen)
+{
+	lzma_ret ret;
+
+	ret = lzma_stream_encoder(&ulzma.strm, ulzma.filters, LZMA_CHECK_CRC32);
+	if (ret != LZMA_OK) {
+		if (ret == LZMA_MEMLIMIT_ERROR)
+			errx(1, "can't compress data: LZMA_MEMLIMIT_ERROR");
+
+		errx(1, "can't compress data: LZMA compressor ERROR");
+	}
+
+	ulzma.strm.next_in = ibuf;
+	ulzma.strm.avail_in = ulzma.blksz;
+	ulzma.strm.next_out = ulzma.obuf;
+	ulzma.strm.avail_out = ulzma.blksz * 2;
+
+	ret = lzma_code(&ulzma.strm, LZMA_FINISH);
+
+	if (ret != LZMA_STREAM_END) {
+		/* Error */
+		errx(1, "lzma_code FINISH failed, code=%d, pos(in=%zd, "
+		    "out=%zd)", ret, (ulzma.blksz - ulzma.strm.avail_in),
+		    (ulzma.blksz * 2 - ulzma.strm.avail_out));
+	}
+
+	lzma_end(&ulzma.strm);
+
+	*destlen = (ulzma.blksz * 2) - ulzma.strm.avail_out;
+}
diff --git a/usr.bin/mkuzip/mkuz_lzma.h b/usr.bin/mkuzip/mkuz_lzma.h
new file mode 100644
index 0000000..426f8bc
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_lzma.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * Copyright (c) 2011 Aleksandr Rybalko <ray@ddteam.net>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/* Format L3.0, since we move to XZ API */
+#define CLOOP_MAGIC_LZMA \
+    "#!/bin/sh\n" \
+    "#L3.0\n" \
+    "n=uncompress\n" \
+    "m=geom_$n\n" \
+    "(kldstat -m $m 2>&-||kldload $m)>&-&&" \
+        "mount_cd9660 /dev/`mdconfig -af $0`.$n $1\n" \
+    "exit $?\n"
+#define DEFAULT_SUFX_LZMA   ".ulzma"
+
+void *mkuz_lzma_init(uint32_t);
+void mkuz_lzma_compress(const char *, uint32_t *);
diff --git a/usr.bin/mkuzip/mkuz_zlib.c b/usr.bin/mkuzip/mkuz_zlib.c
new file mode 100644
index 0000000..8828891
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_zlib.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <err.h>
+#include <stdint.h>
+
+#include <zlib.h>
+
+#include "mkuzip.h"
+#include "mkuz_zlib.h"
+
+struct mkuz_zlib {
+	char *obuf;
+	uLongf oblen;
+	uint32_t blksz;
+};
+
+static struct mkuz_zlib uzip;
+
+void *
+mkuz_zlib_init(uint32_t blksz)
+{
+	if (blksz % DEV_BSIZE != 0) {
+		errx(1, "cluster size should be multiple of %d",
+		    DEV_BSIZE);
+		/* Not reached */
+	}
+	if (compressBound(blksz) > MAXPHYS) {
+		errx(1, "cluster size is too large");
+		/* Not reached */
+	}
+	uzip.oblen = compressBound(blksz);
+	uzip.obuf = mkuz_safe_malloc(uzip.oblen);
+	uzip.blksz = blksz;
+
+	return (uzip.obuf);
+}
+
+void
+mkuz_zlib_compress(const char *ibuf, uint32_t *destlen)
+{
+	uLongf destlen_z;
+
+	destlen_z = uzip.oblen;
+	if (compress2(uzip.obuf, &destlen_z, ibuf, uzip.blksz,
+	    Z_BEST_COMPRESSION) != Z_OK) {
+		errx(1, "can't compress data: compress2() "
+		    "failed");
+		/* Not reached */
+	}
+
+	*destlen = (uint32_t)destlen_z;
+}
diff --git a/usr.bin/mkuzip/mkuz_zlib.h b/usr.bin/mkuzip/mkuz_zlib.h
new file mode 100644
index 0000000..f50bba2
--- /dev/null
+++ b/usr.bin/mkuzip/mkuz_zlib.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#define DEFAULT_SUFX_ZLIB       ".uzip"
+
+#define CLOOP_MAGIC_ZLIB        "#!/bin/sh\n#V2.0 Format\n" \
+    "(kldstat -qm g_uzip||kldload geom_uzip)>&-&&" \
+    "mount_cd9660 /dev/`mdconfig -af $0`.uzip $1\nexit $?\n"
+
+void *mkuz_zlib_init(uint32_t);
+void mkuz_zlib_compress(const char *, uint32_t *);
diff --git a/usr.bin/mkuzip/mkuzip.8 b/usr.bin/mkuzip/mkuzip.8
index c0b8315..c839551 100644
--- a/usr.bin/mkuzip/mkuzip.8
+++ b/usr.bin/mkuzip/mkuzip.8
@@ -1,9 +1,27 @@
-.\" ----------------------------------------------------------------------------
-.\" "THE BEER-WARE LICENSE" (Revision 42):
-.\" <sobomax@FreeBSD.org> wrote this file. As long as you retain this notice you
-.\" can do whatever you want with this stuff. If we meet some day, and you think
-.\" this stuff is worth it, you can buy me a beer in return.       Maxim Sobolev
-.\" ----------------------------------------------------------------------------
+.\"-
+.\" Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
 .\"
 .\" $FreeBSD$
 .\"
@@ -39,7 +57,9 @@ works in two phases:
 An
 .Ar infile
 image is split into clusters; each cluster is compressed using
-.Xr zlib 3 .
+.Xr zlib 3 
+or
+.Xr lzma 3 .
 .It
 The resulting set of compressed clusters along with headers that allow
 locating each individual cluster is written to the output file.
@@ -51,7 +71,23 @@ The options are:
 Name of the output file
 .Ar outfile .
 The default is to use the input name with the suffix
-.Pa .uzip .
+.Pa .uzip 
+for the
+.Xr zlib 3
+compression or
+.Pa .ulzma
+for the
+.Xr lzma 3 .
+.It Fl L
+Use
+.Xr lzma 3
+compression algorithm instead of the default
+.Xr zlib 3 .
+The
+.Xr lzma 3
+provides noticeable better compression levels on the same data set
+at the expense of much slower compression speed (10-20x) and somewhat slower
+decompression (2-3x).
 .It Fl s Ar cluster_size
 Split the image into clusters of
 .Ar cluster_size
@@ -61,6 +97,27 @@ The
 should be a multiple of 512 bytes.
 .It Fl v
 Display verbose messages.
+.It Fl Z
+Disable zero-blocks detection and elimination.
+When this option is set, the
+.Nm
+would compress empty blocks (i.e. clusters that consist of only zero bytes)
+just as it would any other block.
+When the option is not set, the
+.Nm
+detects such blocks and skips them from the output.
+Setting
+.Fl Z
+results is slight increase of compressed image size, typically less than 0.1%
+of a final size of the compressed image.
+.It Fl d
+Enable de-duplication.
+When the option is enabled the
+.Nm
+detects identical blocks in the input and replaces each subsequent occurence
+of such block with pointer to the very first one in the output.
+Setting this option results is moderate decrease of compressed image size,
+typically around 3-5% of a final size of the compressed image.
 .El
 .Sh NOTES
 The compression ratio largely depends on the cluster size used.
@@ -92,11 +149,20 @@ disk device using
 and automatically mount it using
 .Xr mount_cd9660 8
 on the mount point provided as the first argument to the script.
+.Pp
+The de-duplication is a
+.Fx
+specific feature and while it does not require any changes to on-disk
+compressed image format, however it did require some matching changes to the
+.Xr geom_uzip 4
+to handle resulting images correctly.
 .Sh EXIT STATUS
 .Ex -std
 .Sh SEE ALSO
 .Xr gzip 1 ,
+.Xr xz 1 ,
 .Xr zlib 3 ,
+.Xr lzma 3 ,
 .Xr geom 4 ,
 .Xr geom_uzip 4 ,
 .Xr md 4 ,
diff --git a/usr.bin/mkuzip/mkuzip.c b/usr.bin/mkuzip/mkuzip.c
index 08c8ed0..1e3a204 100644
--- a/usr.bin/mkuzip/mkuzip.c
+++ b/usr.bin/mkuzip/mkuzip.c
@@ -1,15 +1,33 @@
 /*
- * ----------------------------------------------------------------------------
- * "THE BEER-WARE LICENSE" (Revision 42):
- * <sobomax@FreeBSD.ORG> wrote this file. As long as you retain this notice you
- * can do whatever you want with this stuff. If we meet some day, and you think
- * this stuff is worth it, you can buy me a beer in return.       Maxim Sobolev
- * ----------------------------------------------------------------------------
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
  *
- * $FreeBSD$
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  *
  */
 
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
 #include <sys/types.h>
 #include <sys/disk.h>
 #include <sys/endian.h>
@@ -17,7 +35,7 @@
 #include <sys/stat.h>
 #include <sys/uio.h>
 #include <netinet/in.h>
-#include <zlib.h>
+#include <ctype.h>
 #include <err.h>
 #include <fcntl.h>
 #include <signal.h>
@@ -26,18 +44,44 @@
 #include <string.h>
 #include <unistd.h>
 
-#define CLSTSIZE	16384
-#define DEFAULT_SUFX	".uzip"
+#include "mkuzip.h"
+#include "mkuz_cloop.h"
+#include "mkuz_blockcache.h"
+#include "mkuz_zlib.h"
+#include "mkuz_lzma.h"
+
+#define DEFINE_RAW_METHOD(func, rval, args...) typedef rval (*func##_t)(args)
+
+#define DEFAULT_CLSTSIZE	16384
+
+DEFINE_RAW_METHOD(f_init, void *, uint32_t);
+DEFINE_RAW_METHOD(f_compress, void, const char *, uint32_t *);
 
-#define CLOOP_MAGIC_LEN 128
-static char CLOOP_MAGIC_START[] = "#!/bin/sh\n#V2.0 Format\n"
-    "(kldstat -qm g_uzip||kldload geom_uzip)>&-&&"
-    "mount_cd9660 /dev/`mdconfig -af $0`.uzip $1\nexit $?\n";
+struct mkuz_format {
+	const char *magic;
+	const char *default_sufx;
+	f_init_t f_init;
+	f_compress_t f_compress;
+};
+
+static struct mkuz_format uzip_fmt = {
+	.magic = CLOOP_MAGIC_ZLIB,
+	.default_sufx = DEFAULT_SUFX_ZLIB,
+	.f_init = &mkuz_zlib_init,
+	.f_compress = &mkuz_zlib_compress
+};
+
+static struct mkuz_format ulzma_fmt = {
+        .magic = CLOOP_MAGIC_LZMA,
+        .default_sufx = DEFAULT_SUFX_LZMA,
+        .f_init = &mkuz_lzma_init,
+        .f_compress = &mkuz_lzma_compress
+};
 
 static char *readblock(int, char *, u_int32_t);
 static void usage(void);
-static void *safe_malloc(size_t);
 static void cleanup(void);
+static int  memvcmp(const void *, unsigned char, size_t);
 
 static char *cleanfile = NULL;
 
@@ -45,24 +89,24 @@ int main(int argc, char **argv)
 {
 	char *iname, *oname, *obuf, *ibuf;
 	uint64_t *toc;
-	int fdr, fdw, i, opt, verbose, tmp;
+	int fdr, fdw, i, opt, verbose, no_zcomp, tmp, en_dedup;
 	struct iovec iov[2];
 	struct stat sb;
-	uLongf destlen;
-	uint64_t offset;
-	struct cloop_header {
-		char magic[CLOOP_MAGIC_LEN];    /* cloop magic */
-		uint32_t blksz;                 /* block size */
-		uint32_t nblocks;               /* number of blocks */
-	} hdr;
+	uint32_t destlen;
+	uint64_t offset, last_offset;
+	struct cloop_header hdr;
+	struct mkuz_blkcache_hit *chit;
+	const struct mkuz_format *handler;
 
 	memset(&hdr, 0, sizeof(hdr));
-	hdr.blksz = CLSTSIZE;
-	strcpy(hdr.magic, CLOOP_MAGIC_START);
+	hdr.blksz = DEFAULT_CLSTSIZE;
 	oname = NULL;
 	verbose = 0;
+	no_zcomp = 0;
+	en_dedup = 0;
+	handler = &uzip_fmt;
 
-	while((opt = getopt(argc, argv, "o:s:v")) != -1) {
+	while((opt = getopt(argc, argv, "o:s:vZdL")) != -1) {
 		switch(opt) {
 		case 'o':
 			oname = optarg;
@@ -75,15 +119,6 @@ int main(int argc, char **argv)
 				    optarg);
 				/* Not reached */
 			}
-			if (tmp % DEV_BSIZE != 0) {
-				errx(1, "cluster size should be multiple of %d",
-				    DEV_BSIZE);
-				/* Not reached */
-			}
-			if (compressBound(tmp) > MAXPHYS) {
-				errx(1, "cluster size is too large");
-				    /* Not reached */
-			}
 			hdr.blksz = tmp;
 			break;
 
@@ -91,6 +126,18 @@ int main(int argc, char **argv)
 			verbose = 1;
 			break;
 
+		case 'Z':
+			no_zcomp = 1;
+			break;
+
+		case 'd':
+			en_dedup = 1;
+			break;
+
+		case 'L':
+			handler = &ulzma_fmt;
+			break;
+
 		default:
 			usage();
 			/* Not reached */
@@ -104,17 +151,26 @@ int main(int argc, char **argv)
 		/* Not reached */
 	}
 
+	strcpy(hdr.magic, handler->magic);
+
+	if (en_dedup != 0) {
+		hdr.magic[CLOOP_OFS_VERSN] = CLOOP_MAJVER_3;
+		hdr.magic[CLOOP_OFS_COMPR] =
+		    tolower(hdr.magic[CLOOP_OFS_COMPR]);
+	}
+
+	obuf = handler->f_init(hdr.blksz);
+
 	iname = argv[0];
 	if (oname == NULL) {
-		asprintf(&oname, "%s%s", iname, DEFAULT_SUFX);
+		asprintf(&oname, "%s%s", iname, handler->default_sufx);
 		if (oname == NULL) {
 			err(1, "can't allocate memory");
 			/* Not reached */
 		}
 	}
 
-	obuf = safe_malloc(compressBound(hdr.blksz));
-	ibuf = safe_malloc(hdr.blksz);
+	ibuf = mkuz_safe_malloc(hdr.blksz);
 
 	signal(SIGHUP, exit);
 	signal(SIGINT, exit);
@@ -152,7 +208,7 @@ int main(int argc, char **argv)
 			"of %d, padding data\n", hdr.blksz);
 		hdr.nblocks++;
 	}
-	toc = safe_malloc((hdr.nblocks + 1) * sizeof(*toc));
+	toc = mkuz_safe_malloc((hdr.nblocks + 1) * sizeof(*toc));
 
 	fdw = open(oname, O_WRONLY | O_TRUNC | O_CREAT,
 		   S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
@@ -177,40 +233,73 @@ int main(int argc, char **argv)
 		    "%u, index length %zu bytes\n", sb.st_size,
 		    hdr.nblocks, iov[1].iov_len);
 
+	last_offset = 0;
 	for(i = 0; i == 0 || ibuf != NULL; i++) {
 		ibuf = readblock(fdr, ibuf, hdr.blksz);
 		if (ibuf != NULL) {
-			destlen = compressBound(hdr.blksz);
-			if (compress2(obuf, &destlen, ibuf, hdr.blksz,
-			    Z_BEST_COMPRESSION) != Z_OK) {
-				errx(1, "can't compress data: compress2() "
-				    "failed");
-				/* Not reached */
+			if (no_zcomp == 0 && \
+			    memvcmp(ibuf, '\0', hdr.blksz) != 0) {
+				/* All zeroes block */
+				destlen = 0;
+			} else {
+				handler->f_compress(ibuf, &destlen);
 			}
-			if (verbose != 0)
-				fprintf(stderr, "cluster #%d, in %u bytes, "
-				    "out %lu bytes\n", i, hdr.blksz, destlen);
 		} else {
 			destlen = DEV_BSIZE - (offset % DEV_BSIZE);
 			memset(obuf, 0, destlen);
 			if (verbose != 0)
-				fprintf(stderr, "padding data with %lu bytes so "
-				    "that file size is multiple of %d\n", destlen,
-				    DEV_BSIZE);
+				fprintf(stderr, "padding data with %lu bytes "
+				    "so that file size is multiple of %d\n",
+				    (u_long)destlen, DEV_BSIZE);
 		}
-		if (write(fdw, obuf, destlen) < 0) {
-			err(1, "write(%s)", oname);
-			/* Not reached */
+		if (destlen > 0 && en_dedup != 0) {
+			chit = mkuz_blkcache_regblock(fdw, i, offset, destlen,
+			    obuf);
+			/*
+			 * There should be at least one non-empty block
+			 * between us and the backref'ed offset, otherwise
+			 * we won't be able to parse that sequence correctly
+			 * as it would be indistinguishible from another
+			 * empty block.
+			 */
+			if (chit != NULL && chit->offset == last_offset) {
+				chit = NULL;
+			}
+		} else {
+			chit = NULL;
+		}
+		if (chit != NULL) {
+			toc[i] = htobe64(chit->offset);
+		} else {
+			if (destlen > 0 && write(fdw, obuf, destlen) < 0) {
+				err(1, "write(%s)", oname);
+				/* Not reached */
+			}
+			toc[i] = htobe64(offset);
+			last_offset = offset;
+			offset += destlen;
+		}
+		if (ibuf != NULL && verbose != 0) {
+			fprintf(stderr, "cluster #%d, in %u bytes, "
+			    "out len=%lu offset=%lu", i, hdr.blksz,
+			    chit == NULL ? (u_long)destlen : 0,
+			    (u_long)be64toh(toc[i]));
+			if (chit != NULL) {
+				fprintf(stderr, " (backref'ed to #%d)",
+				    chit->blkno);
+			}
+			fprintf(stderr, "\n");
+
 		}
-		toc[i] = htobe64(offset);
-		offset += destlen;
 	}
 	close(fdr);
 
 	if (verbose != 0)
 		fprintf(stderr, "compressed data to %ju bytes, saved %lld "
-		    "bytes, %.2f%% decrease.\n", offset, (long long)(sb.st_size - offset),
-		    100.0 * (long long)(sb.st_size - offset) / (float)sb.st_size);
+		    "bytes, %.2f%% decrease.\n", offset,
+		    (long long)(sb.st_size - offset),
+		    100.0 * (long long)(sb.st_size - offset) /
+		    (float)sb.st_size);
 
 	/* Convert to big endian */
 	hdr.blksz = htonl(hdr.blksz);
@@ -248,12 +337,13 @@ static void
 usage(void)
 {
 
-	fprintf(stderr, "usage: mkuzip [-v] [-o outfile] [-s cluster_size] infile\n");
+	fprintf(stderr, "usage: mkuzip [-vZdL] [-o outfile] [-s cluster_size] "
+	    "infile\n");
 	exit(1);
 }
 
-static void *
-safe_malloc(size_t size)
+void *
+mkuz_safe_malloc(size_t size)
 {
 	void *retval;
 
@@ -272,3 +362,12 @@ cleanup(void)
 	if (cleanfile != NULL)
 		unlink(cleanfile);
 }
+
+static int
+memvcmp(const void *memory, unsigned char val, size_t size)
+{
+    const u_char *mm;
+
+    mm = (const u_char *)memory;
+    return (*mm == val) && memcmp(mm, mm + 1, size - 1) == 0;
+}
diff --git a/usr.bin/mkuzip/mkuzip.h b/usr.bin/mkuzip/mkuzip.h
new file mode 100644
index 0000000..4028b3a
--- /dev/null
+++ b/usr.bin/mkuzip/mkuzip.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+void *mkuz_safe_malloc(size_t);
diff --git a/usr.bin/truss/Makefile b/usr.bin/truss/Makefile
index b28098c..7ba4392 100644
--- a/usr.bin/truss/Makefile
+++ b/usr.bin/truss/Makefile
@@ -2,7 +2,7 @@
 
 NO_WERROR=
 PROG=	truss
-SRCS=	cloudabi.c main.c setup.c syscalls.c
+SRCS=	main.c setup.c syscalls.c
 
 LIBADD=	sysdecode
 
diff --git a/usr.bin/truss/aarch64-cloudabi64.c b/usr.bin/truss/aarch64-cloudabi64.c
index f2891af..27906ea 100644
--- a/usr.bin/truss/aarch64-cloudabi64.c
+++ b/usr.bin/truss/aarch64-cloudabi64.c
@@ -31,11 +31,9 @@ __FBSDID("$FreeBSD$");
 
 #include <machine/armreg.h>
 
-#include <errno.h>
 #include <stdio.h>
 #include <sysdecode.h>
 
-#include "cloudabi.h"
 #include "truss.h"
 
 static int
@@ -74,8 +72,6 @@ aarch64_cloudabi64_fetch_retval(struct trussinfo *trussinfo, long *retval,
 	retval[0] = regs.x[0];
 	retval[1] = regs.x[1];
 	*errorp = (regs.spsr & PSR_C) != 0;
-	if (*errorp)
-		retval[0] = cloudabi_convert_errno(retval[0]);
 	return (0);
 }
 
diff --git a/usr.bin/truss/amd64-cloudabi64.c b/usr.bin/truss/amd64-cloudabi64.c
index ce8b189..f7d7c1a 100644
--- a/usr.bin/truss/amd64-cloudabi64.c
+++ b/usr.bin/truss/amd64-cloudabi64.c
@@ -31,11 +31,9 @@ __FBSDID("$FreeBSD$");
 
 #include <machine/psl.h>
 
-#include <errno.h>
 #include <stdio.h>
 #include <sysdecode.h>
 
-#include "cloudabi.h"
 #include "truss.h"
 
 static int
@@ -83,8 +81,6 @@ amd64_cloudabi64_fetch_retval(struct trussinfo *trussinfo, long *retval,
 	retval[0] = regs.r_rax;
 	retval[1] = regs.r_rdx;
 	*errorp = (regs.r_rflags & PSL_C) != 0;
-	if (*errorp)
-		retval[0] = cloudabi_convert_errno(retval[0]);
 	return (0);
 }
 
diff --git a/usr.bin/truss/amd64-linux32.c b/usr.bin/truss/amd64-linux32.c
index 873ef01..279d228 100644
--- a/usr.bin/truss/amd64-linux32.c
+++ b/usr.bin/truss/amd64-linux32.c
@@ -83,28 +83,12 @@ amd64_linux32_fetch_args(struct trussinfo *trussinfo, u_int narg)
 	return (0);
 }
 
-/*
- * Linux syscalls return negative errno's, we do positive and map them
- */
-static const int bsd_to_linux_errno[] = {
-	-0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
-	-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
-	-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
-	-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
-	-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
-	-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
-	-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
-	-116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
-	-6,
-};
-
 static int
 amd64_linux32_fetch_retval(struct trussinfo *trussinfo, long *retval,
     int *errorp)
 {
 	struct reg regs;
 	lwpid_t tid;
-	size_t i;
 
 	tid = trussinfo->curthread->tid;
 	if (ptrace(PT_GETREGS, tid, (caddr_t)&regs, 0) < 0) {
@@ -117,17 +101,6 @@ amd64_linux32_fetch_retval(struct trussinfo *trussinfo, long *retval,
 	*errorp = !!(regs.r_rflags & PSL_C);
 	if (*errorp)
 		retval[0] = (int)retval[0];
-
-	if (*errorp) {
-		for (i = 0; i < nitems(bsd_to_linux_errno); i++) {
-			if (retval[0] == bsd_to_linux_errno[i]) {
-				retval[0] = i;
-				return (0);
-			}
-		}
-
-		/* XXX: How to handle unknown errors? */
-	}
 	return (0);
 }
 
diff --git a/usr.bin/truss/cloudabi.c b/usr.bin/truss/cloudabi.c
deleted file mode 100644
index d426500..0000000
--- a/usr.bin/truss/cloudabi.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/*-
- * Copyright (c) 2015 Nuxi, https://nuxi.nl/
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-
-#include <errno.h>
-
-#include <compat/cloudabi/cloudabi_syscalldefs.h>
-
-#include "cloudabi.h"
-
-long
-cloudabi_convert_errno(long error)
-{
-	static const int table[] = {
-		[CLOUDABI_E2BIG]		= E2BIG,
-		[CLOUDABI_EACCES]		= EACCES,
-		[CLOUDABI_EADDRINUSE]		= EADDRINUSE,
-		[CLOUDABI_EADDRNOTAVAIL]	= EADDRNOTAVAIL,
-		[CLOUDABI_EAFNOSUPPORT]		= EAFNOSUPPORT,
-		[CLOUDABI_EAGAIN]		= EAGAIN,
-		[CLOUDABI_EALREADY]		= EALREADY,
-		[CLOUDABI_EBADF]		= EBADF,
-		[CLOUDABI_EBADMSG]		= EBADMSG,
-		[CLOUDABI_EBUSY]		= EBUSY,
-		[CLOUDABI_ECANCELED]		= ECANCELED,
-		[CLOUDABI_ECHILD]		= ECHILD,
-		[CLOUDABI_ECONNABORTED]		= ECONNABORTED,
-		[CLOUDABI_ECONNREFUSED]		= ECONNREFUSED,
-		[CLOUDABI_ECONNRESET]		= ECONNRESET,
-		[CLOUDABI_EDEADLK]		= EDEADLK,
-		[CLOUDABI_EDESTADDRREQ]		= EDESTADDRREQ,
-		[CLOUDABI_EDOM]			= EDOM,
-		[CLOUDABI_EDQUOT]		= EDQUOT,
-		[CLOUDABI_EEXIST]		= EEXIST,
-		[CLOUDABI_EFAULT]		= EFAULT,
-		[CLOUDABI_EFBIG]		= EFBIG,
-		[CLOUDABI_EHOSTUNREACH]		= EHOSTUNREACH,
-		[CLOUDABI_EIDRM]		= EIDRM,
-		[CLOUDABI_EILSEQ]		= EILSEQ,
-		[CLOUDABI_EINPROGRESS]		= EINPROGRESS,
-		[CLOUDABI_EINTR]		= EINTR,
-		[CLOUDABI_EINVAL]		= EINVAL,
-		[CLOUDABI_EIO]			= EIO,
-		[CLOUDABI_EISCONN]		= EISCONN,
-		[CLOUDABI_EISDIR]		= EISDIR,
-		[CLOUDABI_ELOOP]		= ELOOP,
-		[CLOUDABI_EMFILE]		= EMFILE,
-		[CLOUDABI_EMLINK]		= EMLINK,
-		[CLOUDABI_EMSGSIZE]		= EMSGSIZE,
-		[CLOUDABI_EMULTIHOP]		= EMULTIHOP,
-		[CLOUDABI_ENAMETOOLONG]		= ENAMETOOLONG,
-		[CLOUDABI_ENETDOWN]		= ENETDOWN,
-		[CLOUDABI_ENETRESET]		= ENETRESET,
-		[CLOUDABI_ENETUNREACH]		= ENETUNREACH,
-		[CLOUDABI_ENFILE]		= ENFILE,
-		[CLOUDABI_ENOBUFS]		= ENOBUFS,
-		[CLOUDABI_ENODEV]		= ENODEV,
-		[CLOUDABI_ENOENT]		= ENOENT,
-		[CLOUDABI_ENOEXEC]		= ENOEXEC,
-		[CLOUDABI_ENOLCK]		= ENOLCK,
-		[CLOUDABI_ENOLINK]		= ENOLINK,
-		[CLOUDABI_ENOMEM]		= ENOMEM,
-		[CLOUDABI_ENOMSG]		= ENOMSG,
-		[CLOUDABI_ENOPROTOOPT]		= ENOPROTOOPT,
-		[CLOUDABI_ENOSPC]		= ENOSPC,
-		[CLOUDABI_ENOSYS]		= ENOSYS,
-		[CLOUDABI_ENOTCONN]		= ENOTCONN,
-		[CLOUDABI_ENOTDIR]		= ENOTDIR,
-		[CLOUDABI_ENOTEMPTY]		= ENOTEMPTY,
-		[CLOUDABI_ENOTRECOVERABLE]	= ENOTRECOVERABLE,
-		[CLOUDABI_ENOTSOCK]		= ENOTSOCK,
-		[CLOUDABI_ENOTSUP]		= ENOTSUP,
-		[CLOUDABI_ENOTTY]		= ENOTTY,
-		[CLOUDABI_ENXIO]		= ENXIO,
-		[CLOUDABI_EOVERFLOW]		= EOVERFLOW,
-		[CLOUDABI_EOWNERDEAD]		= EOWNERDEAD,
-		[CLOUDABI_EPERM]		= EPERM,
-		[CLOUDABI_EPIPE]		= EPIPE,
-		[CLOUDABI_EPROTO]		= EPROTO,
-		[CLOUDABI_EPROTONOSUPPORT]	= EPROTONOSUPPORT,
-		[CLOUDABI_EPROTOTYPE]		= EPROTOTYPE,
-		[CLOUDABI_ERANGE]		= ERANGE,
-		[CLOUDABI_EROFS]		= EROFS,
-		[CLOUDABI_ESPIPE]		= ESPIPE,
-		[CLOUDABI_ESRCH]		= ESRCH,
-		[CLOUDABI_ESTALE]		= ESTALE,
-		[CLOUDABI_ETIMEDOUT]		= ETIMEDOUT,
-		[CLOUDABI_ETXTBSY]		= ETXTBSY,
-		[CLOUDABI_EXDEV]		= EXDEV,
-		[CLOUDABI_ENOTCAPABLE]		= ENOTCAPABLE,
-	};
-
-	if (error < 0 || error >= nitems(table) || table[error] == 0)
-		return (error);
-	return (table[error]);
-}
diff --git a/usr.bin/truss/extern.h b/usr.bin/truss/extern.h
index 708d055..5ce3d3b 100644
--- a/usr.bin/truss/extern.h
+++ b/usr.bin/truss/extern.h
@@ -31,6 +31,7 @@
  * $FreeBSD$
  */
 
+extern int print_line_prefix(struct trussinfo *);
 extern void setup_and_wait(struct trussinfo *, char **);
 extern void start_tracing(struct trussinfo *, pid_t);
 extern void restore_proc(int);
diff --git a/usr.bin/truss/i386-linux.c b/usr.bin/truss/i386-linux.c
index c5f625d..52232b4 100644
--- a/usr.bin/truss/i386-linux.c
+++ b/usr.bin/truss/i386-linux.c
@@ -83,27 +83,11 @@ i386_linux_fetch_args(struct trussinfo *trussinfo, u_int narg)
 	return (0);
 }
 
-/*
- * Linux syscalls return negative errno's, we do positive and map them
- */
-static const int bsd_to_linux_errno[] = {
-	-0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9,
-	-10, -35, -12, -13, -14, -15, -16, -17, -18, -19,
-	-20, -21, -22, -23, -24, -25, -26, -27, -28, -29,
-	-30, -31, -32, -33, -34, -11,-115,-114, -88, -89,
-	-90, -91, -92, -93, -94, -95, -96, -97, -98, -99,
-	-100,-101,-102,-103,-104,-105,-106,-107,-108,-109,
-	-110,-111, -40, -36,-112,-113, -39, -11, -87,-122,
-	-116, -66,  -6,  -6,  -6,  -6,  -6, -37, -38,  -9,
-	-6,
-};
-
 static int
 i386_linux_fetch_retval(struct trussinfo *trussinfo, long *retval, int *errorp)
 {
 	struct reg regs;
 	lwpid_t tid;
-	size_t i;
 
 	tid = trussinfo->curthread->tid;
 	if (ptrace(PT_GETREGS, tid, (caddr_t)&regs, 0) < 0) {
@@ -114,17 +98,6 @@ i386_linux_fetch_retval(struct trussinfo *trussinfo, long *retval, int *errorp)
 	retval[0] = regs.r_eax;
 	retval[1] = regs.r_edx;
 	*errorp = !!(regs.r_eflags & PSL_C);
-
-	if (*errorp) {
-		for (i = 0; i < nitems(bsd_to_linux_errno); i++) {
-			if (retval[0] == bsd_to_linux_errno[i]) {
-				retval[0] = i;
-				return (0);
-			}
-		}
-
-		/* XXX: How to handle unknown errors? */
-	}
 	return (0);
 }
 
diff --git a/usr.bin/truss/main.c b/usr.bin/truss/main.c
index 531d7db..38626fd 100644
--- a/usr.bin/truss/main.c
+++ b/usr.bin/truss/main.c
@@ -96,7 +96,7 @@ main(int ac, char **av)
 	trussinfo->curthread = NULL;
 	LIST_INIT(&trussinfo->proclist);
 	init_syscalls();
-	while ((c = getopt(ac, av, "p:o:facedDs:S")) != -1) {
+	while ((c = getopt(ac, av, "p:o:facedDs:SH")) != -1) {
 		switch (c) {
 		case 'p':	/* specified pid */
 			pid = atoi(optarg);
@@ -132,6 +132,9 @@ main(int ac, char **av)
 		case 'S':	/* Don't trace signals */
 			trussinfo->flags |= NOSIGS;
 			break;
+		case 'H':
+			trussinfo->flags |= DISPLAYTIDS;
+			break;
 		default:
 			usage();
 		}
diff --git a/usr.bin/truss/setup.c b/usr.bin/truss/setup.c
index 24126ad..36dd571f 100644
--- a/usr.bin/truss/setup.c
+++ b/usr.bin/truss/setup.c
@@ -439,26 +439,46 @@ exit_syscall(struct trussinfo *info, struct ptrace_lwpinfo *pl)
 	}
 }
 
-static void
-report_exit(struct trussinfo *info, siginfo_t *si)
+int
+print_line_prefix(struct trussinfo *info)
 {
 	struct timespec timediff;
+	struct threadinfo *t;
+	int len;
 
-	if (info->flags & FOLLOWFORKS)
-		fprintf(info->outfile, "%5d: ", si->si_pid);
-	clock_gettime(CLOCK_REALTIME, &info->curthread->after);
+	len = 0;
+	t = info->curthread;
+	if (info->flags & (FOLLOWFORKS | DISPLAYTIDS)) {
+		if (info->flags & FOLLOWFORKS)
+			len += fprintf(info->outfile, "%5d", t->proc->pid);
+		if ((info->flags & (FOLLOWFORKS | DISPLAYTIDS)) ==
+		    (FOLLOWFORKS | DISPLAYTIDS))
+			len += fprintf(info->outfile, " ");
+		if (info->flags & DISPLAYTIDS)
+			len += fprintf(info->outfile, "%6d", t->tid);
+		len += fprintf(info->outfile, ": ");
+	}
 	if (info->flags & ABSOLUTETIMESTAMPS) {
-		timespecsubt(&info->curthread->after, &info->start_time,
-		    &timediff);
-		fprintf(info->outfile, "%jd.%09ld ", (intmax_t)timediff.tv_sec,
-		    timediff.tv_nsec);
+		timespecsubt(&t->after, &info->start_time, &timediff);
+		len += fprintf(info->outfile, "%jd.%09ld ",
+		    (intmax_t)timediff.tv_sec, timediff.tv_nsec);
 	}
 	if (info->flags & RELATIVETIMESTAMPS) {
-		timespecsubt(&info->curthread->after, &info->curthread->before,
-		    &timediff);
-		fprintf(info->outfile, "%jd.%09ld ", (intmax_t)timediff.tv_sec,
-		    timediff.tv_nsec);
+		timespecsubt(&t->after, &t->before, &timediff);
+		len += fprintf(info->outfile, "%jd.%09ld ",
+		    (intmax_t)timediff.tv_sec, timediff.tv_nsec);
 	}
+	return (len);
+}
+
+static void
+report_exit(struct trussinfo *info, siginfo_t *si)
+{
+	struct threadinfo *t;
+
+	t = info->curthread;
+	clock_gettime(CLOCK_REALTIME, &t->after);
+	print_line_prefix(info);
 	if (si->si_code == CLD_EXITED)
 		fprintf(info->outfile, "process exit, rval = %u\n",
 		    si->si_status);
@@ -469,48 +489,26 @@ report_exit(struct trussinfo *info, siginfo_t *si)
 }
 
 static void
-report_new_child(struct trussinfo *info, pid_t pid)
+report_new_child(struct trussinfo *info)
 {
-	struct timespec timediff;
+	struct threadinfo *t;
 
-	clock_gettime(CLOCK_REALTIME, &info->curthread->after);
-	assert(info->flags & FOLLOWFORKS);
-	fprintf(info->outfile, "%5d: ", pid);
-	if (info->flags & ABSOLUTETIMESTAMPS) {
-		timespecsubt(&info->curthread->after, &info->start_time,
-		    &timediff);
-		fprintf(info->outfile, "%jd.%09ld ", (intmax_t)timediff.tv_sec,
-		    timediff.tv_nsec);
-	}
-	if (info->flags & RELATIVETIMESTAMPS) {
-		timediff.tv_sec = 0;
-		timediff.tv_nsec = 0;
-		fprintf(info->outfile, "%jd.%09ld ", (intmax_t)timediff.tv_sec,
-		    timediff.tv_nsec);
-	}
+	t = info->curthread;
+	clock_gettime(CLOCK_REALTIME, &t->after);
+	t->before = t->after;
+	print_line_prefix(info);
 	fprintf(info->outfile, "<new process>\n");
 }
 
 static void
 report_signal(struct trussinfo *info, siginfo_t *si)
 {
-	struct timespec timediff;
+	struct threadinfo *t;
 	char *signame;
 
-	if (info->flags & FOLLOWFORKS)
-		fprintf(info->outfile, "%5d: ", si->si_pid);
-	if (info->flags & ABSOLUTETIMESTAMPS) {
-		timespecsubt(&info->curthread->after, &info->start_time,
-		    &timediff);
-		fprintf(info->outfile, "%jd.%09ld ", (intmax_t)timediff.tv_sec,
-		    timediff.tv_nsec);
-	}
-	if (info->flags & RELATIVETIMESTAMPS) {
-		timespecsubt(&info->curthread->after, &info->curthread->before,
-		    &timediff);
-		fprintf(info->outfile, "%jd.%09ld ", (intmax_t)timediff.tv_sec,
-		    timediff.tv_nsec);
-	}
+	t = info->curthread;
+	clock_gettime(CLOCK_REALTIME, &t->after);
+	print_line_prefix(info);
 	signame = strsig(si->si_status);
 	fprintf(info->outfile, "SIGNAL %u (%s)\n", si->si_status,
 	    signame == NULL ? "?" : signame);
@@ -572,7 +570,7 @@ eventloop(struct trussinfo *info)
 				pending_signal = 0;
 			} else if (pl.pl_flags & PL_FLAG_CHILD) {
 				if ((info->flags & COUNTONLY) == 0)
-					report_new_child(info, si.si_pid);
+					report_new_child(info);
 				pending_signal = 0;
 			} else {
 				if ((info->flags & NOSIGS) == 0)
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index b013390..b3a4c42 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -2005,38 +2005,18 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
 void
 print_syscall(struct trussinfo *trussinfo)
 {
-	struct timespec timediff;
 	struct threadinfo *t;
 	const char *name;
 	char **s_args;
 	int i, len, nargs;
 
-	len = 0;
 	t = trussinfo->curthread;
-	if (trussinfo->flags & FOLLOWFORKS)
-		len += fprintf(trussinfo->outfile, "%5d: ",
-		    t->proc->pid);
 
 	name = t->cs.name;
 	nargs = t->cs.nargs;
 	s_args = t->cs.s_args;
-	if (name != NULL && (strcmp(name, "execve") == 0 ||
-	    strcmp(name, "exit") == 0)) {
-		clock_gettime(CLOCK_REALTIME, &t->after);
-	}
-
-	if (trussinfo->flags & ABSOLUTETIMESTAMPS) {
-		timespecsubt(&t->after, &trussinfo->start_time, &timediff);
-		len += fprintf(trussinfo->outfile, "%jd.%09ld ",
-		    (intmax_t)timediff.tv_sec, timediff.tv_nsec);
-	}
-
-	if (trussinfo->flags & RELATIVETIMESTAMPS) {
-		timespecsubt(&t->after, &t->before, &timediff);
-		len += fprintf(trussinfo->outfile, "%jd.%09ld ",
-		    (intmax_t)timediff.tv_sec, timediff.tv_nsec);
-	}
 
+	len = print_line_prefix(trussinfo);
 	len += fprintf(trussinfo->outfile, "%s(", name);
 
 	for (i = 0; i < nargs; i++) {
@@ -2059,11 +2039,11 @@ print_syscall_ret(struct trussinfo *trussinfo, int errorp, long *retval)
 	struct timespec timediff;
 	struct threadinfo *t;
 	struct syscall *sc;
+	int error;
 
 	t = trussinfo->curthread;
 	sc = t->cs.sc;
 	if (trussinfo->flags & COUNTONLY) {
-		clock_gettime(CLOCK_REALTIME, &t->after);
 		timespecsubt(&t->after, &t->before, &timediff);
 		timespecadd(&sc->time, &timediff, &sc->time);
 		sc->ncalls++;
@@ -2074,9 +2054,12 @@ print_syscall_ret(struct trussinfo *trussinfo, int errorp, long *retval)
 
 	print_syscall(trussinfo);
 	fflush(trussinfo->outfile);
-	if (errorp)
+	if (errorp) {
+		error = sysdecode_abi_to_freebsd_errno(t->proc->abi->abi,
+		    retval[0]);
 		fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval[0],
-		    strerror(retval[0]));
+		    error == INT_MAX ? "Unknown error" : strerror(error));
+	}
 #ifndef __LP64__
 	else if (sc->ret_type == 2) {
 		off_t off;
diff --git a/usr.bin/truss/truss.1 b/usr.bin/truss/truss.1
index fb02cb4..0246fa9 100644
--- a/usr.bin/truss/truss.1
+++ b/usr.bin/truss/truss.1
@@ -1,6 +1,6 @@
 .\" $FreeBSD$
 .\"
-.Dd October 9, 2015
+.Dd February 23, 2016
 .Dt TRUSS 1
 .Os
 .Sh NAME
@@ -8,12 +8,12 @@
 .Nd trace system calls
 .Sh SYNOPSIS
 .Nm
-.Op Fl facedDS
+.Op Fl facedDHS
 .Op Fl o Ar file
 .Op Fl s Ar strsize
 .Fl p Ar pid
 .Nm
-.Op Fl facedDS
+.Op Fl facedDHS
 .Op Fl o Ar file
 .Op Fl s Ar strsize
 .Ar command Op Ar args
@@ -32,6 +32,10 @@ Trace descendants of the original traced process created by
 .Xr fork 2 ,
 .Xr vfork 2 ,
 etc.
+To distinguish events between processes,
+the process ID
+.Pq PID
+of the process is included in the output of each event.
 .It Fl a
 Show the argument strings that are passed in each
 .Xr execve 2
@@ -52,6 +56,8 @@ since the trace was started.
 .It Fl D
 Include timestamps in the output showing the time elapsed
 since the last recorded event.
+.It Fl H
+Include the thread ID of in the output of each event.
 .It Fl S
 Do not display information about signals received by the process.
 (Normally,
diff --git a/usr.bin/truss/truss.h b/usr.bin/truss/truss.h
index 5ef2444..582ab0b 100644
--- a/usr.bin/truss/truss.h
+++ b/usr.bin/truss/truss.h
@@ -35,6 +35,7 @@
 #define	EXECVEARGS		0x00000010
 #define	EXECVEENVS		0x00000020
 #define	COUNTONLY		0x00000040
+#define	DISPLAYTIDS		0x00000080
 
 struct procinfo;
 struct trussinfo;