Merge from head@274682

16 files changed, 1865 insertions, 216 deletions

diff --git a/lib/libnv/Makefile b/lib/libnv/Makefile
index 710c295..e9371bc 100644
--- a/lib/libnv/Makefile
+++ b/lib/libnv/Makefile
@@ -1,7 +1,10 @@
 # $FreeBSD$
 
-LIB=	nv
 SHLIBDIR?= /lib
+
+.include <src.opts.mk>
+
+LIB=	nv
 SHLIB_MAJOR= 0
 
 SRCS=	dnvlist.c
@@ -146,7 +149,7 @@ MLINKS+=nv.3 nvlist_existsv.3 \
 	nv.3 nvlist_takev_nvlist.3 \
 	nv.3 nvlist_takev_descriptor.3 \
 	nv.3 nvlist_takev_binary.3 \
-	nv.3 nvlist_freef.3 \
+	nv.3 nvlist_freev.3 \
 	nv.3 nvlist_freev_type.3 \
 	nv.3 nvlist_freev_null.3 \
 	nv.3 nvlist_freev_bool.3 \
@@ -158,4 +161,8 @@ MLINKS+=nv.3 nvlist_existsv.3 \
 
 WARNS?=	6
 
+.if ${MK_TESTS} != "no"
+SUBDIR+=	tests
+.endif
+
 .include <bsd.lib.mk>
diff --git a/lib/libnv/msgio.c b/lib/libnv/msgio.c
index 41292aa..27620a1 100644
--- a/lib/libnv/msgio.c
+++ b/lib/libnv/msgio.c
@@ -31,7 +31,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include <sys/types.h>
+#include <sys/param.h>
 #include <sys/socket.h>
 
 #include <errno.h>
@@ -56,6 +56,8 @@ __FBSDID("$FreeBSD$");
 #define	PJDLOG_ABORT(...)		abort()
 #endif
 
+#define	PKG_MAX_SIZE	(MCLBYTES / CMSG_SPACE(sizeof(int)) - 1)
+
 static int
 msghdr_add_fd(struct cmsghdr *cmsg, int fd)
 {
@@ -234,22 +236,31 @@ cred_recv(int sock, struct cmsgcred *cred)
 	return (0);
 }
 
-int
-fd_send(int sock, const int *fds, size_t nfds)
+static int
+fd_package_send(int sock, const int *fds, size_t nfds)
 {
 	struct msghdr msg;
 	struct cmsghdr *cmsg;
+	struct iovec iov;
 	unsigned int i;
 	int serrno, ret;
+	uint8_t dummy;
 
-	if (nfds == 0 || fds == NULL) {
-		errno = EINVAL;
-		return (-1);
-	}
+	PJDLOG_ASSERT(sock >= 0);
+	PJDLOG_ASSERT(fds != NULL);
+	PJDLOG_ASSERT(nfds > 0);
 
 	bzero(&msg, sizeof(msg));
-	msg.msg_iov = NULL;
-	msg.msg_iovlen = 0;
+
+	/*
+	 * XXX: Look into cred_send function for more details.
+	 */
+	dummy = 0;
+	iov.iov_base = &dummy;
+	iov.iov_len = sizeof(dummy);
+
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
 	msg.msg_controllen = nfds * CMSG_SPACE(sizeof(int));
 	msg.msg_control = calloc(1, msg.msg_controllen);
 	if (msg.msg_control == NULL)
@@ -274,22 +285,32 @@ end:
 	return (ret);
 }
 
-int
-fd_recv(int sock, int *fds, size_t nfds)
+static int
+fd_package_recv(int sock, int *fds, size_t nfds)
 {
 	struct msghdr msg;
 	struct cmsghdr *cmsg;
 	unsigned int i;
 	int serrno, ret;
+	struct iovec iov;
+	uint8_t dummy;
 
-	if (nfds == 0 || fds == NULL) {
-		errno = EINVAL;
-		return (-1);
-	}
+	PJDLOG_ASSERT(sock >= 0);
+	PJDLOG_ASSERT(nfds > 0);
+	PJDLOG_ASSERT(fds != NULL);
 
+	i = 0;
 	bzero(&msg, sizeof(msg));
-	msg.msg_iov = NULL;
-	msg.msg_iovlen = 0;
+	bzero(&iov, sizeof(iov));
+
+	/*
+	 * XXX: Look into cred_send function for more details.
+	 */
+	iov.iov_base = &dummy;
+	iov.iov_len = sizeof(dummy);
+
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
 	msg.msg_controllen = nfds * CMSG_SPACE(sizeof(int));
 	msg.msg_control = calloc(1, msg.msg_controllen);
 	if (msg.msg_control == NULL)
@@ -333,6 +354,64 @@ end:
 }
 
 int
+fd_recv(int sock, int *fds, size_t nfds)
+{
+	unsigned int i, step, j;
+	int ret, serrno;
+
+	if (nfds == 0 || fds == NULL) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	ret = i = step = 0;
+	while (i < nfds) {
+		if (PKG_MAX_SIZE < nfds - i)
+			step = PKG_MAX_SIZE;
+		else
+			step = nfds - i;
+		ret = fd_package_recv(sock, fds + i, step);
+		if (ret != 0) {
+			/* Close all received descriptors. */
+			serrno = errno;
+			for (j = 0; j < i; j++)
+				close(fds[j]);
+			errno = serrno;
+			break;
+		}
+		i += step;
+	}
+
+	return (ret);
+}
+
+int
+fd_send(int sock, const int *fds, size_t nfds)
+{
+	unsigned int i, step;
+	int ret;
+
+	if (nfds == 0 || fds == NULL) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	ret = i = step = 0;
+	while (i < nfds) {
+		if (PKG_MAX_SIZE < nfds - i)
+			step = PKG_MAX_SIZE;
+		else
+			step = nfds - i;
+		ret = fd_package_send(sock, fds + i, step);
+		if (ret != 0)
+			break;
+		i += step;
+	}
+
+	return (ret);
+}
+
+int
 buf_send(int sock, void *buf, size_t size)
 {
 	ssize_t done;
diff --git a/lib/libnv/nv.3 b/lib/libnv/nv.3
index 63c8e8b..29ba744 100644
--- a/lib/libnv/nv.3
+++ b/lib/libnv/nv.3
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 21, 2014
+.Dd September 25, 2014
 .Dt NV 3
 .Os
 .Sh NAME
@@ -150,6 +150,8 @@
 .Fn nvlist_get_descriptor "const nvlist_t *nvl" "const char *name"
 .Ft "const void *"
 .Fn nvlist_get_binary "const nvlist_t *nvl" "const char *name" "size_t *sizep"
+.Ft "const nvlist_t *"
+.Fn nvlist_get_parent "const nvlist_t *nvl"
 .\"
 .Ft bool
 .Fn nvlist_take_bool "nvlist_t *nvl" "const char *name"
@@ -437,6 +439,10 @@ extension, which allows to provide default value for a missing element.
 The nvlist must not be in error state.
 .Pp
 The
+.Fn nvlist_get_parent
+function allows to obtain the parent nvlist from the nested nvlist.
+.Pp
+The
 .Fn nvlist_take_bool ,
 .Fn nvlist_take_number ,
 .Fn nvlist_take_string ,
diff --git a/lib/libnv/nv.h b/lib/libnv/nv.h
index e2d7030..1b55be1 100644
--- a/lib/libnv/nv.h
+++ b/lib/libnv/nv.h
@@ -83,6 +83,8 @@ nvlist_t *nvlist_xfer(int sock, nvlist_t *nvl);
 
 const char *nvlist_next(const nvlist_t *nvl, int *typep, void **cookiep);
 
+const nvlist_t *nvlist_get_parent(const nvlist_t *nvl);
+
 /*
  * The nvlist_exists functions check if the given name (optionally of the given
  * type) exists on nvlist.
diff --git a/lib/libnv/nv_impl.h b/lib/libnv/nv_impl.h
index 3206006..3ed45b3 100644
--- a/lib/libnv/nv_impl.h
+++ b/lib/libnv/nv_impl.h
@@ -39,6 +39,8 @@ struct nvpair;
 typedef struct nvpair nvpair_t;
 #endif
 
+#define	NV_TYPE_NVLIST_UP		255
+
 #define	NV_TYPE_FIRST		NV_TYPE_NULL
 #define	NV_TYPE_LAST		NV_TYPE_BINARY
 
@@ -55,6 +57,8 @@ void nvlist_add_nvpair(nvlist_t *nvl, const nvpair_t *nvp);
 
 void nvlist_move_nvpair(nvlist_t *nvl, nvpair_t *nvp);
 
+void nvlist_set_parent(nvlist_t *nvl, nvpair_t *parent);
+
 const nvpair_t *nvlist_get_nvpair(const nvlist_t *nvl, const char *name);
 
 nvpair_t *nvlist_take_nvpair(nvlist_t *nvl, const char *name);
diff --git a/lib/libnv/nvlist.c b/lib/libnv/nvlist.c
index 929ba48..b495441 100644
--- a/lib/libnv/nvlist.c
+++ b/lib/libnv/nvlist.c
@@ -73,10 +73,11 @@ __FBSDID("$FreeBSD$");
 
 #define	NVLIST_MAGIC	0x6e766c	/* "nvl" */
 struct nvlist {
-	int		nvl_magic;
-	int		nvl_error;
-	int		nvl_flags;
-	struct nvl_head	nvl_head;
+	int		 nvl_magic;
+	int		 nvl_error;
+	int		 nvl_flags;
+	nvpair_t	*nvl_parent;
+	struct nvl_head	 nvl_head;
 };
 
 #define	NVLIST_ASSERT(nvl)	do {					\
@@ -106,6 +107,7 @@ nvlist_create(int flags)
 	nvl = malloc(sizeof(*nvl));
 	nvl->nvl_error = 0;
 	nvl->nvl_flags = flags;
+	nvl->nvl_parent = NULL;
 	TAILQ_INIT(&nvl->nvl_head);
 	nvl->nvl_magic = NVLIST_MAGIC;
 
@@ -147,6 +149,36 @@ nvlist_error(const nvlist_t *nvl)
 	return (nvl->nvl_error);
 }
 
+nvpair_t *
+nvlist_get_nvpair_parent(const nvlist_t *nvl)
+{
+
+	NVLIST_ASSERT(nvl);
+
+	return (nvl->nvl_parent);
+}
+
+const nvlist_t *
+nvlist_get_parent(const nvlist_t *nvl)
+{
+
+	NVLIST_ASSERT(nvl);
+
+	if (nvl->nvl_parent == NULL)
+		return (NULL);
+
+	return (nvpair_nvlist(nvl->nvl_parent));
+}
+
+void
+nvlist_set_parent(nvlist_t *nvl, nvpair_t *parent)
+{
+
+	NVLIST_ASSERT(nvl);
+
+	nvl->nvl_parent = parent;
+}
+
 bool
 nvlist_empty(const nvlist_t *nvl)
 {
@@ -301,24 +333,34 @@ nvlist_clone(const nvlist_t *nvl)
 	return (newnvl);
 }
 
+static bool
+nvlist_dump_error_check(const nvlist_t *nvl, int fd, int level)
+{
+
+	if (nvlist_error(nvl) != 0) {
+		dprintf(fd, "%*serror: %d\n", level * 4, "",
+		    nvlist_error(nvl));
+		return (true);
+	}
+
+	return (false);
+}
+
 /*
  * Dump content of nvlist.
  */
-static void
-nvlist_xdump(const nvlist_t *nvl, int fd, int level)
+void
+nvlist_dump(const nvlist_t *nvl, int fd)
 {
 	nvpair_t *nvp;
+	int level;
 
-	PJDLOG_ASSERT(level < 3);
-
-	if (nvlist_error(nvl) != 0) {
-		dprintf(fd, "%*serror: %d\n", level * 4, "",
-		    nvlist_error(nvl));
+	level = 0;
+	if (nvlist_dump_error_check(nvl, fd, level))
 		return;
-	}
 
-	for (nvp = nvlist_first_nvpair(nvl); nvp != NULL;
-	    nvp = nvlist_next_nvpair(nvl, nvp)) {
+	nvp = nvlist_first_nvpair(nvl);
+	while (nvp != NULL) {
 		dprintf(fd, "%*s%s (%s):", level * 4, "", nvpair_name(nvp),
 		    nvpair_type_string(nvpair_type(nvp)));
 		switch (nvpair_type(nvp)) {
@@ -340,8 +382,14 @@ nvlist_xdump(const nvlist_t *nvl, int fd, int level)
 			break;
 		case NV_TYPE_NVLIST:
 			dprintf(fd, "\n");
-			nvlist_xdump(nvpair_get_nvlist(nvp), fd, level + 1);
-			break;
+			nvl = nvpair_get_nvlist(nvp);
+			if (nvlist_dump_error_check(nvl, fd, level + 1)) {
+				nvl = nvlist_get_parent(nvl);
+				break;
+			}
+			level += 1;
+			nvp = nvlist_first_nvpair(nvl);
+			continue;
 		case NV_TYPE_DESCRIPTOR:
 			dprintf(fd, " %d\n", nvpair_get_descriptor(nvp));
 			break;
@@ -361,14 +409,15 @@ nvlist_xdump(const nvlist_t *nvl, int fd, int level)
 		default:
 			PJDLOG_ABORT("Unknown type: %d.", nvpair_type(nvp));
 		}
-	}
-}
 
-void
-nvlist_dump(const nvlist_t *nvl, int fd)
-{
-
-	nvlist_xdump(nvl, fd, 0);
+		while ((nvp = nvlist_next_nvpair(nvl, nvp)) == NULL) {
+			nvp = nvlist_get_nvpair_parent(nvl);
+			if (nvp == NULL)
+				return;
+			nvl = nvlist_get_parent(nvl);
+			level --;
+		}
+	}
 }
 
 void
@@ -381,41 +430,44 @@ nvlist_fdump(const nvlist_t *nvl, FILE *fp)
 
 /*
  * The function obtains size of the nvlist after nvlist_pack().
- * Additional argument 'level' allows to track how deep are we as we obtain
- * size of the NV_TYPE_NVLIST elements using recursion. We allow at most
- * three levels of recursion.
  */
-static size_t
-nvlist_xsize(const nvlist_t *nvl, int level)
+size_t
+nvlist_size(const nvlist_t *nvl)
 {
 	const nvpair_t *nvp;
 	size_t size;
 
 	NVLIST_ASSERT(nvl);
 	PJDLOG_ASSERT(nvl->nvl_error == 0);
-	PJDLOG_ASSERT(level < 3);
 
 	size = sizeof(struct nvlist_header);
-	for (nvp = nvlist_first_nvpair(nvl); nvp != NULL;
-	    nvp = nvlist_next_nvpair(nvl, nvp)) {
+	nvp = nvlist_first_nvpair(nvl);
+	while (nvp != NULL) {
 		size += nvpair_header_size();
 		size += strlen(nvpair_name(nvp)) + 1;
-		if (nvpair_type(nvp) == NV_TYPE_NVLIST)
-			size += nvlist_xsize(nvpair_get_nvlist(nvp), level + 1);
-		else
+		if (nvpair_type(nvp) == NV_TYPE_NVLIST) {
+			size += sizeof(struct nvlist_header);
+			size += nvpair_header_size() + 1;
+			nvl = nvpair_get_nvlist(nvp);
+			PJDLOG_ASSERT(nvl->nvl_error == 0);
+			nvp = nvlist_first_nvpair(nvl);
+			continue;
+		} else {
 			size += nvpair_size(nvp);
+		}
+
+		while ((nvp = nvlist_next_nvpair(nvl, nvp)) == NULL) {
+			nvp = nvlist_get_nvpair_parent(nvl);
+			if (nvp == NULL)
+				goto out;
+			nvl = nvlist_get_parent(nvl);
+		}
 	}
 
+out:
 	return (size);
 }
 
-size_t
-nvlist_size(const nvlist_t *nvl)
-{
-
-	return (nvlist_xsize(nvl, 0));
-}
-
 static int *
 nvlist_xdescriptors(const nvlist_t *nvl, int *descs, int level)
 {
@@ -541,15 +593,59 @@ nvlist_xpack(const nvlist_t *nvl, int64_t *fdidxp, size_t *sizep)
 
 	ptr = nvlist_pack_header(nvl, ptr, &left);
 
-	for (nvp = nvlist_first_nvpair(nvl); nvp != NULL;
-	    nvp = nvlist_next_nvpair(nvl, nvp)) {
-		ptr = nvpair_pack(nvp, ptr, fdidxp, &left);
+	nvp = nvlist_first_nvpair(nvl);
+	while (nvp != NULL) {
+		NVPAIR_ASSERT(nvp);
+
+		nvpair_init_datasize(nvp);
+		ptr = nvpair_pack_header(nvp, ptr, &left);
 		if (ptr == NULL) {
 			free(buf);
 			return (NULL);
 		}
+		switch (nvpair_type(nvp)) {
+		case NV_TYPE_NULL:
+			ptr = nvpair_pack_null(nvp, ptr, &left);
+			break;
+		case NV_TYPE_BOOL:
+			ptr = nvpair_pack_bool(nvp, ptr, &left);
+			break;
+		case NV_TYPE_NUMBER:
+			ptr = nvpair_pack_number(nvp, ptr, &left);
+			break;
+		case NV_TYPE_STRING:
+			ptr = nvpair_pack_string(nvp, ptr, &left);
+			break;
+		case NV_TYPE_NVLIST:
+			nvl = nvpair_get_nvlist(nvp);
+			nvp = nvlist_first_nvpair(nvl);
+			ptr = nvlist_pack_header(nvl, ptr, &left);
+			continue;
+		case NV_TYPE_DESCRIPTOR:
+			ptr = nvpair_pack_descriptor(nvp, ptr, fdidxp, &left);
+			break;
+		case NV_TYPE_BINARY:
+			ptr = nvpair_pack_binary(nvp, ptr, &left);
+			break;
+		default:
+			PJDLOG_ABORT("Invalid type (%d).", nvpair_type(nvp));
+		}
+		if (ptr == NULL) {
+			free(buf);
+			return (NULL);
+		}
+		while ((nvp = nvlist_next_nvpair(nvl, nvp)) == NULL) {
+			nvp = nvlist_get_nvpair_parent(nvl);
+			if (nvp == NULL)
+				goto out;
+			ptr = nvpair_pack_nvlist_up(ptr, &left);
+			if (ptr == NULL)
+				goto out;
+			nvl = nvlist_get_parent(nvl);
+		}
 	}
 
+out:
 	if (sizep != NULL)
 		*sizep = size;
 	return (buf);
@@ -600,9 +696,9 @@ nvlist_check_header(struct nvlist_header *nvlhdrp)
 	return (true);
 }
 
-static const unsigned char *
+const unsigned char *
 nvlist_unpack_header(nvlist_t *nvl, const unsigned char *ptr, size_t nfds,
-    int *flagsp, size_t *leftp)
+    bool *isbep, size_t *leftp)
 {
 	struct nvlist_header nvlhdr;
 
@@ -629,7 +725,8 @@ nvlist_unpack_header(nvlist_t *nvl, const unsigned char *ptr, size_t nfds,
 	nvl->nvl_flags = (nvlhdr.nvlh_flags & NV_FLAG_PUBLIC_MASK);
 
 	ptr += sizeof(nvlhdr);
-	*flagsp = (int)nvlhdr.nvlh_flags;
+	if (isbep != NULL)
+		*isbep = (((int)nvlhdr.nvlh_flags & NV_FLAG_BIG_ENDIAN) != 0);
 	*leftp -= sizeof(nvlhdr);
 
 	return (ptr);
@@ -642,32 +739,72 @@ nvlist_t *
 nvlist_xunpack(const void *buf, size_t size, const int *fds, size_t nfds)
 {
 	const unsigned char *ptr;
-	nvlist_t *nvl;
+	nvlist_t *nvl, *retnvl, *tmpnvl;
 	nvpair_t *nvp;
 	size_t left;
-	int flags;
+	bool isbe;
 
 	left = size;
 	ptr = buf;
 
-	nvl = nvlist_create(0);
+	tmpnvl = NULL;
+	nvl = retnvl = nvlist_create(0);
 	if (nvl == NULL)
 		goto failed;
 
-	ptr = nvlist_unpack_header(nvl, ptr, nfds, &flags, &left);
+	ptr = nvlist_unpack_header(nvl, ptr, nfds, &isbe, &left);
 	if (ptr == NULL)
 		goto failed;
 
 	while (left > 0) {
-		ptr = nvpair_unpack(flags, ptr, &left, fds, nfds, &nvp);
+		ptr = nvpair_unpack(isbe, ptr, &left, &nvp);
+		if (ptr == NULL)
+			goto failed;
+		switch (nvpair_type(nvp)) {
+		case NV_TYPE_NULL:
+			ptr = nvpair_unpack_null(isbe, nvp, ptr, &left);
+			break;
+		case NV_TYPE_BOOL:
+			ptr = nvpair_unpack_bool(isbe, nvp, ptr, &left);
+			break;
+		case NV_TYPE_NUMBER:
+			ptr = nvpair_unpack_number(isbe, nvp, ptr, &left);
+			break;
+		case NV_TYPE_STRING:
+			ptr = nvpair_unpack_string(isbe, nvp, ptr, &left);
+			break;
+		case NV_TYPE_NVLIST:
+			ptr = nvpair_unpack_nvlist(isbe, nvp, ptr, &left, nfds,
+			    &tmpnvl);
+			nvlist_set_parent(tmpnvl, nvp);
+			break;
+		case NV_TYPE_DESCRIPTOR:
+			ptr = nvpair_unpack_descriptor(isbe, nvp, ptr, &left,
+			    fds, nfds);
+			break;
+		case NV_TYPE_BINARY:
+			ptr = nvpair_unpack_binary(isbe, nvp, ptr, &left);
+			break;
+		case NV_TYPE_NVLIST_UP:
+			if (nvl->nvl_parent == NULL)
+				goto failed;
+			nvl = nvpair_nvlist(nvl->nvl_parent);
+			continue;
+		default:
+			PJDLOG_ABORT("Invalid type (%d).", nvpair_type(nvp));
+		}
 		if (ptr == NULL)
 			goto failed;
 		nvlist_move_nvpair(nvl, nvp);
+		if (tmpnvl != NULL) {
+			nvl = tmpnvl;
+			tmpnvl = NULL;
+		}
 	}
 
-	return (nvl);
+	return (retnvl);
 failed:
-	nvlist_destroy(nvl);
+	nvlist_destroy(retnvl);
 	return (NULL);
 }
 
@@ -727,7 +864,7 @@ nvlist_recv(int sock)
 	struct nvlist_header nvlhdr;
 	nvlist_t *nvl, *ret;
 	unsigned char *buf;
-	size_t nfds, size;
+	size_t nfds, size, i;
 	int serrno, *fds;
 
 	if (buf_recv(sock, &nvlhdr, sizeof(nvlhdr)) == -1)
@@ -760,8 +897,11 @@ nvlist_recv(int sock)
 	}
 
 	nvl = nvlist_xunpack(buf, size, fds, nfds);
-	if (nvl == NULL)
+	if (nvl == NULL) {
+		for (i = 0; i < nfds; i++)
+			close(fds[i]);
 		goto out;
+	}
 
 	ret = nvl;
 out:
@@ -1328,7 +1468,8 @@ nvlist_movev_nvlist(nvlist_t *nvl, nvlist_t *value, const char *namefmt,
 	nvpair_t *nvp;
 
 	if (nvlist_error(nvl) != 0) {
-		nvlist_destroy(value);
+		if (value != NULL && nvlist_get_nvpair_parent(value) != NULL)
+			nvlist_destroy(value);
 		errno = nvlist_error(nvl);
 		return;
 	}
diff --git a/lib/libnv/nvlist_impl.h b/lib/libnv/nvlist_impl.h
index 43a7bb0..ef32dea 100644
--- a/lib/libnv/nvlist_impl.h
+++ b/lib/libnv/nvlist_impl.h
@@ -40,4 +40,8 @@ void *nvlist_xpack(const nvlist_t *nvl, int64_t *fdidxp, size_t *sizep);
 nvlist_t *nvlist_xunpack(const void *buf, size_t size, const int *fds,
     size_t nfds);
 
+nvpair_t *nvlist_get_nvpair_parent(const nvlist_t *nvl);
+const unsigned char *nvlist_unpack_header(nvlist_t *nvl,
+    const unsigned char *ptr, size_t nfds, bool *isbep, size_t *leftp);
+
 #endif	/* !_NVLIST_IMPL_H_ */
diff --git a/lib/libnv/nvpair.c b/lib/libnv/nvpair.c
index 916444f..4f0bd72 100644
--- a/lib/libnv/nvpair.c
+++ b/lib/libnv/nvpair.c
@@ -67,7 +67,7 @@ struct nvpair {
 	int		 nvp_type;
 	uint64_t	 nvp_data;
 	size_t		 nvp_datasize;
-	nvlist_t	*nvp_list;	/* Used for sanity checks. */
+	nvlist_t	*nvp_list;
 	TAILQ_ENTRY(nvpair) nvp_next;
 };
 
@@ -90,7 +90,7 @@ nvpair_assert(const nvpair_t *nvp)
 	NVPAIR_ASSERT(nvp);
 }
 
-const nvlist_t *
+nvlist_t *
 nvpair_nvlist(const nvpair_t *nvp)
 {
 
@@ -131,6 +131,17 @@ nvpair_insert(struct nvl_head *head, nvpair_t *nvp, nvlist_t *nvl)
 	nvp->nvp_list = nvl;
 }
 
+static void
+nvpair_remove_nvlist(nvpair_t *nvp)
+{
+	nvlist_t *nvl;
+
+	/* XXX: DECONST is bad, mkay? */
+	nvl = __DECONST(nvlist_t *, nvpair_get_nvlist(nvp));
+	PJDLOG_ASSERT(nvl != NULL);
+	nvlist_set_parent(nvl, NULL);
+}
+
 void
 nvpair_remove(struct nvl_head *head, nvpair_t *nvp, const nvlist_t *nvl)
 {
@@ -138,6 +149,9 @@ nvpair_remove(struct nvl_head *head, nvpair_t *nvp, const nvlist_t *nvl)
 	NVPAIR_ASSERT(nvp);
 	PJDLOG_ASSERT(nvp->nvp_list == nvl);
 
+	if (nvpair_type(nvp) == NV_TYPE_NVLIST)
+		nvpair_remove_nvlist(nvp);
+
 	TAILQ_REMOVE(head, nvp, nvp_next);
 	nvp->nvp_list = NULL;
 }
@@ -201,7 +215,7 @@ nvpair_size(const nvpair_t *nvp)
 	return (nvp->nvp_datasize);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_header(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 {
 	struct nvpair_header nvphdr;
@@ -227,7 +241,7 @@ nvpair_pack_header(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 	return (ptr);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_null(const nvpair_t *nvp, unsigned char *ptr,
     size_t *leftp __unused)
 {
@@ -238,7 +252,7 @@ nvpair_pack_null(const nvpair_t *nvp, unsigned char *ptr,
 	return (ptr);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_bool(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 {
 	uint8_t value;
@@ -256,7 +270,7 @@ nvpair_pack_bool(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 	return (ptr);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_number(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 {
 	uint64_t value;
@@ -274,7 +288,7 @@ nvpair_pack_number(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 	return (ptr);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_string(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 {
 
@@ -289,37 +303,31 @@ nvpair_pack_string(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 	return (ptr);
 }
 
-static unsigned char *
-nvpair_pack_nvlist(const nvpair_t *nvp, unsigned char *ptr, int64_t *fdidxp,
-    size_t *leftp)
+unsigned char *
+nvpair_pack_nvlist_up(unsigned char *ptr, size_t *leftp)
 {
-	unsigned char *data;
-	size_t size;
-
-	NVPAIR_ASSERT(nvp);
-	PJDLOG_ASSERT(nvp->nvp_type == NV_TYPE_NVLIST);
-
-	if (nvp->nvp_datasize == 0)
-		return (ptr);
-
-	data = nvlist_xpack((const nvlist_t *)(intptr_t)nvp->nvp_data, fdidxp,
-	    &size);
-	if (data == NULL)
-		return (NULL);
-
-	PJDLOG_ASSERT(size == nvp->nvp_datasize);
-	PJDLOG_ASSERT(*leftp >= nvp->nvp_datasize);
+	struct nvpair_header nvphdr;
+	size_t namesize;
+	const char *name = "";
 
-	memcpy(ptr, data, nvp->nvp_datasize);
-	free(data);
+	namesize = 1;
+	nvphdr.nvph_type = NV_TYPE_NVLIST_UP;
+	nvphdr.nvph_namesize = namesize;
+	nvphdr.nvph_datasize = 0;
+	PJDLOG_ASSERT(*leftp >= sizeof(nvphdr));
+	memcpy(ptr, &nvphdr, sizeof(nvphdr));
+	ptr += sizeof(nvphdr);
+	*leftp -= sizeof(nvphdr);
 
-	ptr += nvp->nvp_datasize;
-	*leftp -= nvp->nvp_datasize;
+	PJDLOG_ASSERT(*leftp >= namesize);
+	memcpy(ptr, name, namesize);
+	ptr += namesize;
+	*leftp -= namesize;
 
 	return (ptr);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_descriptor(const nvpair_t *nvp, unsigned char *ptr, int64_t *fdidxp,
     size_t *leftp)
 {
@@ -349,7 +357,7 @@ nvpair_pack_descriptor(const nvpair_t *nvp, unsigned char *ptr, int64_t *fdidxp,
 	return (ptr);
 }
 
-static unsigned char *
+unsigned char *
 nvpair_pack_binary(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 {
 
@@ -364,17 +372,12 @@ nvpair_pack_binary(const nvpair_t *nvp, unsigned char *ptr, size_t *leftp)
 	return (ptr);
 }
 
-unsigned char *
-nvpair_pack(nvpair_t *nvp, unsigned char *ptr, int64_t *fdidxp, size_t *leftp)
+void
+nvpair_init_datasize(nvpair_t *nvp)
 {
 
 	NVPAIR_ASSERT(nvp);
 
-	/*
-	 * We have to update datasize for NV_TYPE_NVLIST on every pack,
-	 * so that proper datasize is placed into nvpair_header
-	 * during the nvpair_pack_header() call below.
-	 */
 	if (nvp->nvp_type == NV_TYPE_NVLIST) {
 		if (nvp->nvp_data == 0) {
 			nvp->nvp_datasize = 0;
@@ -383,42 +386,10 @@ nvpair_pack(nvpair_t *nvp, unsigned char *ptr, int64_t *fdidxp, size_t *leftp)
 			    nvlist_size((const nvlist_t *)(intptr_t)nvp->nvp_data);
 		}
 	}
-
-	ptr = nvpair_pack_header(nvp, ptr, leftp);
-	if (ptr == NULL)
-		return (NULL);
-
-	switch (nvp->nvp_type) {
-	case NV_TYPE_NULL:
-		ptr = nvpair_pack_null(nvp, ptr, leftp);
-		break;
-	case NV_TYPE_BOOL:
-		ptr = nvpair_pack_bool(nvp, ptr, leftp);
-		break;
-	case NV_TYPE_NUMBER:
-		ptr = nvpair_pack_number(nvp, ptr, leftp);
-		break;
-	case NV_TYPE_STRING:
-		ptr = nvpair_pack_string(nvp, ptr, leftp);
-		break;
-	case NV_TYPE_NVLIST:
-		ptr = nvpair_pack_nvlist(nvp, ptr, fdidxp, leftp);
-		break;
-	case NV_TYPE_DESCRIPTOR:
-		ptr = nvpair_pack_descriptor(nvp, ptr, fdidxp, leftp);
-		break;
-	case NV_TYPE_BINARY:
-		ptr = nvpair_pack_binary(nvp, ptr, leftp);
-		break;
-	default:
-		PJDLOG_ABORT("Invalid type (%d).", nvp->nvp_type);
-	}
-
-	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_header(int flags, nvpair_t *nvp, const unsigned char *ptr,
+const unsigned char *
+nvpair_unpack_header(bool isbe, nvpair_t *nvp, const unsigned char *ptr,
     size_t *leftp)
 {
 	struct nvpair_header nvphdr;
@@ -434,16 +405,18 @@ nvpair_unpack_header(int flags, nvpair_t *nvp, const unsigned char *ptr,
 	if (nvphdr.nvph_type < NV_TYPE_FIRST)
 		goto failed;
 #endif
-	if (nvphdr.nvph_type > NV_TYPE_LAST)
+	if (nvphdr.nvph_type > NV_TYPE_LAST &&
+	    nvphdr.nvph_type != NV_TYPE_NVLIST_UP) {
 		goto failed;
+	}
 
 #if BYTE_ORDER == BIG_ENDIAN
-	if ((flags & NV_FLAG_BIG_ENDIAN) == 0) {
+	if (!isbe) {
 		nvphdr.nvph_namesize = le16toh(nvphdr.nvph_namesize);
 		nvphdr.nvph_datasize = le64toh(nvphdr.nvph_datasize);
 	}
 #else
-	if ((flags & NV_FLAG_BIG_ENDIAN) != 0) {
+	if (isbe) {
 		nvphdr.nvph_namesize = be16toh(nvphdr.nvph_namesize);
 		nvphdr.nvph_datasize = be64toh(nvphdr.nvph_datasize);
 	}
@@ -477,8 +450,8 @@ failed:
 	return (NULL);
 }
 
-static const unsigned char *
-nvpair_unpack_null(int flags __unused, nvpair_t *nvp, const unsigned char *ptr,
+const unsigned char *
+nvpair_unpack_null(bool isbe __unused, nvpair_t *nvp, const unsigned char *ptr,
     size_t *leftp __unused)
 {
 
@@ -492,8 +465,8 @@ nvpair_unpack_null(int flags __unused, nvpair_t *nvp, const unsigned char *ptr,
 	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_bool(int flags __unused, nvpair_t *nvp, const unsigned char *ptr,
+const unsigned char *
+nvpair_unpack_bool(bool isbe __unused, nvpair_t *nvp, const unsigned char *ptr,
     size_t *leftp)
 {
 	uint8_t value;
@@ -523,9 +496,9 @@ nvpair_unpack_bool(int flags __unused, nvpair_t *nvp, const unsigned char *ptr,
 	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_number(int flags, nvpair_t *nvp, const unsigned char *ptr,
-    size_t *leftp)
+const unsigned char *
+nvpair_unpack_number(bool isbe, nvpair_t *nvp, const unsigned char *ptr,
+     size_t *leftp)
 {
 
 	PJDLOG_ASSERT(nvp->nvp_type == NV_TYPE_NUMBER);
@@ -539,7 +512,7 @@ nvpair_unpack_number(int flags, nvpair_t *nvp, const unsigned char *ptr,
 		return (NULL);
 	}
 
-	if ((flags & NV_FLAG_BIG_ENDIAN) != 0)
+	if (isbe)
 		nvp->nvp_data = be64dec(ptr);
 	else
 		nvp->nvp_data = le64dec(ptr);
@@ -549,8 +522,8 @@ nvpair_unpack_number(int flags, nvpair_t *nvp, const unsigned char *ptr,
 	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_string(int flags __unused, nvpair_t *nvp,
+const unsigned char *
+nvpair_unpack_string(bool isbe __unused, nvpair_t *nvp,
     const unsigned char *ptr, size_t *leftp)
 {
 
@@ -577,9 +550,9 @@ nvpair_unpack_string(int flags __unused, nvpair_t *nvp,
 	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_nvlist(int flags __unused, nvpair_t *nvp,
-    const unsigned char *ptr, size_t *leftp, const int *fds, size_t nfds)
+const unsigned char *
+nvpair_unpack_nvlist(bool isbe __unused, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp, size_t nfds, nvlist_t **child)
 {
 	nvlist_t *value;
 
@@ -590,20 +563,22 @@ nvpair_unpack_nvlist(int flags __unused, nvpair_t *nvp,
 		return (NULL);
 	}
 
-	value = nvlist_xunpack(ptr, nvp->nvp_datasize, fds, nfds);
+	value = nvlist_create(0);
 	if (value == NULL)
 		return (NULL);
 
-	nvp->nvp_data = (uint64_t)(uintptr_t)value;
+	ptr = nvlist_unpack_header(value, ptr, nfds, NULL, leftp);
+	if (ptr == NULL)
+		return (NULL);
 
-	ptr += nvp->nvp_datasize;
-	*leftp -= nvp->nvp_datasize;
+	nvp->nvp_data = (uint64_t)(uintptr_t)value;
+	*child = value;
 
 	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_descriptor(int flags, nvpair_t *nvp, const unsigned char *ptr,
+const unsigned char *
+nvpair_unpack_descriptor(bool isbe, nvpair_t *nvp, const unsigned char *ptr,
     size_t *leftp, const int *fds, size_t nfds)
 {
 	int64_t idx;
@@ -619,7 +594,7 @@ nvpair_unpack_descriptor(int flags, nvpair_t *nvp, const unsigned char *ptr,
 		return (NULL);
 	}
 
-	if ((flags & NV_FLAG_BIG_ENDIAN) != 0)
+	if (isbe)
 		idx = be64dec(ptr);
 	else
 		idx = le64dec(ptr);
@@ -642,8 +617,8 @@ nvpair_unpack_descriptor(int flags, nvpair_t *nvp, const unsigned char *ptr,
 	return (ptr);
 }
 
-static const unsigned char *
-nvpair_unpack_binary(int flags __unused, nvpair_t *nvp,
+const unsigned char *
+nvpair_unpack_binary(bool isbe __unused, nvpair_t *nvp,
     const unsigned char *ptr, size_t *leftp)
 {
 	void *value;
@@ -669,8 +644,8 @@ nvpair_unpack_binary(int flags __unused, nvpair_t *nvp,
 }
 
 const unsigned char *
-nvpair_unpack(int flags, const unsigned char *ptr, size_t *leftp,
-    const int *fds, size_t nfds, nvpair_t **nvpp)
+nvpair_unpack(bool isbe, const unsigned char *ptr, size_t *leftp,
+    nvpair_t **nvpp)
 {
 	nvpair_t *nvp, *tmp;
 
@@ -679,47 +654,17 @@ nvpair_unpack(int flags, const unsigned char *ptr, size_t *leftp,
 		return (NULL);
 	nvp->nvp_name = (char *)(nvp + 1);
 
-	ptr = nvpair_unpack_header(flags, nvp, ptr, leftp);
+	ptr = nvpair_unpack_header(isbe, nvp, ptr, leftp);
 	if (ptr == NULL)
 		goto failed;
 	tmp = realloc(nvp, sizeof(*nvp) + strlen(nvp->nvp_name) + 1);
 	if (tmp == NULL)
 		goto failed;
 	nvp = tmp;
+
 	/* Update nvp_name after realloc(). */
 	nvp->nvp_name = (char *)(nvp + 1);
-
-	switch (nvp->nvp_type) {
-	case NV_TYPE_NULL:
-		ptr = nvpair_unpack_null(flags, nvp, ptr, leftp);
-		break;
-	case NV_TYPE_BOOL:
-		ptr = nvpair_unpack_bool(flags, nvp, ptr, leftp);
-		break;
-	case NV_TYPE_NUMBER:
-		ptr = nvpair_unpack_number(flags, nvp, ptr, leftp);
-		break;
-	case NV_TYPE_STRING:
-		ptr = nvpair_unpack_string(flags, nvp, ptr, leftp);
-		break;
-	case NV_TYPE_NVLIST:
-		ptr = nvpair_unpack_nvlist(flags, nvp, ptr, leftp, fds,
-		    nfds);
-		break;
-	case NV_TYPE_DESCRIPTOR:
-		ptr = nvpair_unpack_descriptor(flags, nvp, ptr, leftp, fds,
-		    nfds);
-		break;
-	case NV_TYPE_BINARY:
-		ptr = nvpair_unpack_binary(flags, nvp, ptr, leftp);
-		break;
-	default:
-		PJDLOG_ABORT("Invalid type (%d).", nvp->nvp_type);
-	}
-
-	if (ptr == NULL)
-		goto failed;
-
+	nvp->nvp_data = 0x00;
 	nvp->nvp_magic = NVPAIR_MAGIC;
 	*nvpp = nvp;
 	return (ptr);
@@ -1018,6 +963,8 @@ nvpair_createv_nvlist(const nvlist_t *value, const char *namefmt,
 	    namefmt, nameap);
 	if (nvp == NULL)
 		nvlist_destroy(nvl);
+	else
+		nvlist_set_parent(nvl, nvp);
 
 	return (nvp);
 }
@@ -1172,7 +1119,7 @@ nvpair_movev_nvlist(nvlist_t *value, const char *namefmt, va_list nameap)
 {
 	nvpair_t *nvp;
 
-	if (value == NULL) {
+	if (value == NULL || nvlist_get_nvpair_parent(value) != NULL) {
 		errno = EINVAL;
 		return (NULL);
 	}
@@ -1181,6 +1128,8 @@ nvpair_movev_nvlist(nvlist_t *value, const char *namefmt, va_list nameap)
 	    namefmt, nameap);
 	if (nvp == NULL)
 		nvlist_destroy(value);
+	else
+		nvlist_set_parent(value, nvp);
 
 	return (nvp);
 }
diff --git a/lib/libnv/nvpair_impl.h b/lib/libnv/nvpair_impl.h
index aa4046c..a72000b 100644
--- a/lib/libnv/nvpair_impl.h
+++ b/lib/libnv/nvpair_impl.h
@@ -41,18 +41,52 @@
 TAILQ_HEAD(nvl_head, nvpair);
 
 void nvpair_assert(const nvpair_t *nvp);
-const nvlist_t *nvpair_nvlist(const nvpair_t *nvp);
+nvlist_t *nvpair_nvlist(const nvpair_t *nvp);
 nvpair_t *nvpair_next(const nvpair_t *nvp);
 nvpair_t *nvpair_prev(const nvpair_t *nvp);
 void nvpair_insert(struct nvl_head *head, nvpair_t *nvp, nvlist_t *nvl);
 void nvpair_remove(struct nvl_head *head, nvpair_t *nvp, const nvlist_t *nvl);
 size_t nvpair_header_size(void);
 size_t nvpair_size(const nvpair_t *nvp);
-unsigned char *nvpair_pack(nvpair_t *nvp, unsigned char *ptr, int64_t *fdidxp,
-    size_t *leftp);
-const unsigned char *nvpair_unpack(int flags, const unsigned char *ptr,
-    size_t *leftp, const int *fds, size_t nfds, nvpair_t **nvpp);
+const unsigned char *nvpair_unpack(bool isbe, const unsigned char *ptr,
+    size_t *leftp, nvpair_t **nvpp);
 void nvpair_free_structure(nvpair_t *nvp);
+void nvpair_init_datasize(nvpair_t *nvp);
 const char *nvpair_type_string(int type);
 
+/* Pack functions. */
+unsigned char *nvpair_pack_header(const nvpair_t *nvp, unsigned char *ptr,
+    size_t *leftp);
+unsigned char *nvpair_pack_null(const nvpair_t *nvp, unsigned char *ptr,
+    size_t *leftp);
+unsigned char *nvpair_pack_bool(const nvpair_t *nvp, unsigned char *ptr,
+    size_t *leftp);
+unsigned char *nvpair_pack_number(const nvpair_t *nvp, unsigned char *ptr,
+    size_t *leftp);
+unsigned char *nvpair_pack_string(const nvpair_t *nvp, unsigned char *ptr,
+    size_t *leftp);
+unsigned char *nvpair_pack_descriptor(const nvpair_t *nvp, unsigned char *ptr,
+    int64_t *fdidxp, size_t *leftp);
+unsigned char *nvpair_pack_binary(const nvpair_t *nvp, unsigned char *ptr,
+    size_t *leftp);
+unsigned char *nvpair_pack_nvlist_up(unsigned char *ptr, size_t *leftp);
+
+/* Unpack data functions. */
+const unsigned char *nvpair_unpack_header(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp);
+const unsigned char *nvpair_unpack_null(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp);
+const unsigned char *nvpair_unpack_bool(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp);
+const unsigned char *nvpair_unpack_number(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp);
+const unsigned char *nvpair_unpack_string(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp);
+const unsigned char *nvpair_unpack_nvlist(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp, size_t nvlist, nvlist_t **child);
+const unsigned char *nvpair_unpack_descriptor(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp, const int *fds, size_t nfds);
+const unsigned char *nvpair_unpack_binary(bool isbe, nvpair_t *nvp,
+    const unsigned char *ptr, size_t *leftp);
+
 #endif	/* !_NVPAIR_IMPL_H_ */
diff --git a/lib/libnv/tests/Makefile b/lib/libnv/tests/Makefile
new file mode 100644
index 0000000..df10549
--- /dev/null
+++ b/lib/libnv/tests/Makefile
@@ -0,0 +1,17 @@
+# $FreeBSD$
+
+TESTSDIR=	${TESTSBASE}/lib/libnv
+
+TAP_TESTS_C+=	nvlist_add_test
+TAP_TESTS_C+=	nvlist_exists_test
+TAP_TESTS_C+=	nvlist_free_test
+TAP_TESTS_C+=	nvlist_get_test
+TAP_TESTS_C+=	nvlist_move_test
+TAP_TESTS_C+=	nvlist_send_recv_test
+
+DPADD+=		${LIBNV}
+LDADD+=		-lnv
+
+WARNS?=		6
+
+.include <bsd.test.mk>
diff --git a/lib/libnv/tests/nvlist_add_test.c b/lib/libnv/tests/nvlist_add_test.c
new file mode 100644
index 0000000..06bcc63
--- /dev/null
+++ b/lib/libnv/tests/nvlist_add_test.c
@@ -0,0 +1,196 @@
+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <nv.h>
+
+static int ntest = 1;
+
+#define	CHECK(expr)	do {						\
+	if ((expr))							\
+		printf("ok # %d %s:%u\n", ntest, __FILE__, __LINE__);	\
+	else								\
+		printf("not ok # %d %s:%u\n", ntest, __FILE__, __LINE__);\
+	ntest++;							\
+} while (0)
+
+int
+main(void)
+{
+	const nvlist_t *cnvl;
+	nvlist_t *nvl;
+
+	printf("1..94\n");
+
+	nvl = nvlist_create(0);
+
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	nvlist_add_null(nvl, "nvlist/null");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_null(nvl, "nvlist/null"));
+
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool/true"));
+	nvlist_add_bool(nvl, "nvlist/bool/true", true);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool/true"));
+
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool/false"));
+	nvlist_add_bool(nvl, "nvlist/bool/false", false);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool/false"));
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/0"));
+	nvlist_add_number(nvl, "nvlist/number/0", 0);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/0"));
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/1"));
+	nvlist_add_number(nvl, "nvlist/number/1", 1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/1"));
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/-1"));
+	nvlist_add_number(nvl, "nvlist/number/-1", -1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/-1"));
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/UINT64_MAX"));
+	nvlist_add_number(nvl, "nvlist/number/UINT64_MAX", UINT64_MAX);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/UINT64_MAX"));
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/INT64_MIN"));
+	nvlist_add_number(nvl, "nvlist/number/INT64_MIN", INT64_MIN);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/INT64_MIN"));
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/INT64_MAX"));
+	nvlist_add_number(nvl, "nvlist/number/INT64_MAX", INT64_MAX);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/INT64_MAX"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/"));
+	nvlist_add_string(nvl, "nvlist/string/", "");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/x"));
+	nvlist_add_string(nvl, "nvlist/string/x", "x");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/x"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	nvlist_add_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/stringf/"));
+	nvlist_add_stringf(nvl, "nvlist/stringf/", "%s", "");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/stringf/"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/stringf/x"));
+	nvlist_add_stringf(nvl, "nvlist/stringf/x", "%s", "x");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/stringf/x"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/stringf/666Xabc"));
+	nvlist_add_stringf(nvl, "nvlist/stringf/666Xabc", "%d%c%s", 666, 'X', "abc");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/stringf/666Xabc"));
+
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+	nvlist_add_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO", STDERR_FILENO);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary/x"));
+	nvlist_add_binary(nvl, "nvlist/binary/x", "x", 1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary/x"));
+
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+	nvlist_add_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	nvlist_add_nvlist(nvl, "nvlist/nvlist", nvl);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+
+	CHECK(nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool/true"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool/false"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/0"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/1"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/-1"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/UINT64_MAX"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/INT64_MIN"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number/INT64_MAX"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/x"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/stringf/"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/stringf/x"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/stringf/666Xabc"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary/x"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+
+	cnvl = nvlist_get_nvlist(nvl, "nvlist/nvlist");
+	CHECK(nvlist_exists_null(cnvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(cnvl, "nvlist/bool/true"));
+	CHECK(nvlist_exists_bool(cnvl, "nvlist/bool/false"));
+	CHECK(nvlist_exists_number(cnvl, "nvlist/number/0"));
+	CHECK(nvlist_exists_number(cnvl, "nvlist/number/1"));
+	CHECK(nvlist_exists_number(cnvl, "nvlist/number/-1"));
+	CHECK(nvlist_exists_number(cnvl, "nvlist/number/UINT64_MAX"));
+	CHECK(nvlist_exists_number(cnvl, "nvlist/number/INT64_MIN"));
+	CHECK(nvlist_exists_number(cnvl, "nvlist/number/INT64_MAX"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/string/"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/string/x"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/stringf/"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/stringf/x"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/stringf/666Xabc"));
+	CHECK(nvlist_exists_descriptor(cnvl, "nvlist/descriptor/STDERR_FILENO"));
+	CHECK(nvlist_exists_binary(cnvl, "nvlist/binary/x"));
+	CHECK(nvlist_exists_binary(cnvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+
+	nvlist_destroy(nvl);
+
+	return (0);
+}
diff --git a/lib/libnv/tests/nvlist_exists_test.c b/lib/libnv/tests/nvlist_exists_test.c
new file mode 100644
index 0000000..cb595d7
--- /dev/null
+++ b/lib/libnv/tests/nvlist_exists_test.c
@@ -0,0 +1,321 @@
+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <nv.h>
+
+static int ntest = 1;
+
+#define	CHECK(expr)	do {						\
+	if ((expr))							\
+		printf("ok # %d %s:%u\n", ntest, __FILE__, __LINE__);	\
+	else								\
+		printf("not ok # %d %s:%u\n", ntest, __FILE__, __LINE__);\
+	ntest++;							\
+} while (0)
+
+int
+main(void)
+{
+	nvlist_t *nvl;
+
+	printf("1..232\n");
+
+	nvl = nvlist_create(0);
+
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/null"));
+	nvlist_add_null(nvl, "nvlist/null");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/null"));
+
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/bool"));
+	nvlist_add_bool(nvl, "nvlist/bool", true);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/bool"));
+
+	CHECK(!nvlist_exists(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/number"));
+	nvlist_add_number(nvl, "nvlist/number", 0);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/number"));
+
+	CHECK(!nvlist_exists(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/string"));
+	nvlist_add_string(nvl, "nvlist/string", "test");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/string"));
+
+	CHECK(!nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/nvlist"));
+	nvlist_add_nvlist(nvl, "nvlist/nvlist", nvl);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/nvlist"));
+
+	CHECK(!nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/descriptor"));
+	nvlist_add_descriptor(nvl, "nvlist/descriptor", STDERR_FILENO);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/descriptor"));
+
+	CHECK(!nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary"));
+	nvlist_add_binary(nvl, "nvlist/binary", "test", 4);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/binary"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	CHECK(nvlist_exists(nvl, "nvlist/null"));
+	CHECK(nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists(nvl, "nvlist/number"));
+	CHECK(nvlist_exists(nvl, "nvlist/string"));
+	CHECK(nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_null(nvl, "nvlist/null");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists(nvl, "nvlist/number"));
+	CHECK(nvlist_exists(nvl, "nvlist/string"));
+	CHECK(nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_bool(nvl, "nvlist/bool");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists(nvl, "nvlist/number"));
+	CHECK(nvlist_exists(nvl, "nvlist/string"));
+	CHECK(nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_number(nvl, "nvlist/number");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists(nvl, "nvlist/number"));
+	CHECK(nvlist_exists(nvl, "nvlist/string"));
+	CHECK(nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_string(nvl, "nvlist/string");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists(nvl, "nvlist/string"));
+	CHECK(nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_nvlist(nvl, "nvlist/nvlist");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_descriptor(nvl, "nvlist/descriptor");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_binary(nvl, "nvlist/binary");
+	CHECK(!nvlist_exists(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists(nvl, "nvlist/binary"));
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	CHECK(nvlist_empty(nvl));
+
+	nvlist_destroy(nvl);
+
+	return (0);
+}
diff --git a/lib/libnv/tests/nvlist_free_test.c b/lib/libnv/tests/nvlist_free_test.c
new file mode 100644
index 0000000..4417a44
--- /dev/null
+++ b/lib/libnv/tests/nvlist_free_test.c
@@ -0,0 +1,221 @@
+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <nv.h>
+
+static int ntest = 1;
+
+#define	CHECK(expr)	do {						\
+	if ((expr))							\
+		printf("ok # %d %s:%u\n", ntest, __FILE__, __LINE__);	\
+	else								\
+		printf("not ok # %d %s:%u\n", ntest, __FILE__, __LINE__);\
+	ntest++;							\
+} while (0)
+
+int
+main(void)
+{
+	nvlist_t *nvl;
+
+	printf("1..114\n");
+
+	nvl = nvlist_create(0);
+
+	nvlist_add_null(nvl, "nvlist/null");
+	nvlist_add_bool(nvl, "nvlist/bool", true);
+	nvlist_add_number(nvl, "nvlist/number", 0);
+	nvlist_add_string(nvl, "nvlist/string", "test");
+	nvlist_add_nvlist(nvl, "nvlist/nvlist", nvl);
+	nvlist_add_descriptor(nvl, "nvlist/descriptor", STDERR_FILENO);
+	nvlist_add_binary(nvl, "nvlist/binary", "test", 4);
+
+	CHECK(nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_null(nvl, "nvlist/null");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_bool(nvl, "nvlist/bool");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_number(nvl, "nvlist/number");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_string(nvl, "nvlist/string");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_nvlist(nvl, "nvlist/nvlist");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_descriptor(nvl, "nvlist/descriptor");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free_binary(nvl, "nvlist/binary");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	CHECK(nvlist_empty(nvl));
+
+	nvlist_add_null(nvl, "nvlist/null");
+	nvlist_add_bool(nvl, "nvlist/bool", true);
+	nvlist_add_number(nvl, "nvlist/number", 0);
+	nvlist_add_string(nvl, "nvlist/string", "test");
+	nvlist_add_nvlist(nvl, "nvlist/nvlist", nvl);
+	nvlist_add_descriptor(nvl, "nvlist/descriptor", STDERR_FILENO);
+	nvlist_add_binary(nvl, "nvlist/binary", "test", 4);
+
+	CHECK(nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/null");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/bool");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/number");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/string");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/nvlist");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/descriptor");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	nvlist_free(nvl, "nvlist/binary");
+	CHECK(!nvlist_exists_null(nvl, "nvlist/null"));
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool"));
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number"));
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string"));
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor"));
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary"));
+
+	CHECK(nvlist_empty(nvl));
+
+	nvlist_destroy(nvl);
+
+	return (0);
+}
diff --git a/lib/libnv/tests/nvlist_get_test.c b/lib/libnv/tests/nvlist_get_test.c
new file mode 100644
index 0000000..b4468db
--- /dev/null
+++ b/lib/libnv/tests/nvlist_get_test.c
@@ -0,0 +1,182 @@
+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <nv.h>
+
+static int ntest = 1;
+
+#define	CHECK(expr)	do {						\
+	if ((expr))							\
+		printf("ok # %d %s:%u\n", ntest, __FILE__, __LINE__);	\
+	else								\
+		printf("not ok # %d %s:%u\n", ntest, __FILE__, __LINE__);\
+	ntest++;							\
+} while (0)
+
+#define	fd_is_valid(fd)	(fcntl((fd), F_GETFL) != -1 || errno != EBADF)
+
+int
+main(void)
+{
+	const nvlist_t *cnvl;
+	nvlist_t *nvl;
+	size_t size;
+
+	printf("1..83\n");
+
+	nvl = nvlist_create(0);
+
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool/true"));
+	nvlist_add_bool(nvl, "nvlist/bool/true", true);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_get_bool(nvl, "nvlist/bool/true") == true);
+
+	CHECK(!nvlist_exists_bool(nvl, "nvlist/bool/false"));
+	nvlist_add_bool(nvl, "nvlist/bool/false", false);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_get_bool(nvl, "nvlist/bool/false") == false);
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/0"));
+	nvlist_add_number(nvl, "nvlist/number/0", 0);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_get_number(nvl, "nvlist/number/0") == 0);
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/1"));
+	nvlist_add_number(nvl, "nvlist/number/1", 1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_get_number(nvl, "nvlist/number/1") == 1);
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/-1"));
+	nvlist_add_number(nvl, "nvlist/number/-1", -1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK((int)nvlist_get_number(nvl, "nvlist/number/-1") == -1);
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/UINT64_MAX"));
+	nvlist_add_number(nvl, "nvlist/number/UINT64_MAX", UINT64_MAX);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_get_number(nvl, "nvlist/number/UINT64_MAX") == UINT64_MAX);
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/INT64_MIN"));
+	nvlist_add_number(nvl, "nvlist/number/INT64_MIN", INT64_MIN);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK((int64_t)nvlist_get_number(nvl, "nvlist/number/INT64_MIN") == INT64_MIN);
+
+	CHECK(!nvlist_exists_number(nvl, "nvlist/number/INT64_MAX"));
+	nvlist_add_number(nvl, "nvlist/number/INT64_MAX", INT64_MAX);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK((int64_t)nvlist_get_number(nvl, "nvlist/number/INT64_MAX") == INT64_MAX);
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/"));
+	nvlist_add_string(nvl, "nvlist/string/", "");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, "nvlist/string/"), "") == 0);
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/x"));
+	nvlist_add_string(nvl, "nvlist/string/x", "x");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, "nvlist/string/x"), "x") == 0);
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	nvlist_add_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz");
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"), "abcdefghijklmnopqrstuvwxyz") == 0);
+
+	CHECK(!nvlist_exists_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+	nvlist_add_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO", STDERR_FILENO);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(fd_is_valid(nvlist_get_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO")));
+
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary/x"));
+	nvlist_add_binary(nvl, "nvlist/binary/x", "x", 1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/x", NULL), "x", 1) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/x", &size), "x", 1) == 0);
+	CHECK(size == 1);
+
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+	nvlist_add_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", NULL), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", &size), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(size == sizeof("abcdefghijklmnopqrstuvwxyz"));
+
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	nvlist_add_nvlist(nvl, "nvlist/nvlist", nvl);
+	CHECK(nvlist_error(nvl) == 0);
+	cnvl = nvlist_get_nvlist(nvl, "nvlist/nvlist");
+	CHECK(nvlist_get_bool(cnvl, "nvlist/bool/true") == true);
+	CHECK(nvlist_get_bool(cnvl, "nvlist/bool/false") == false);
+	CHECK(nvlist_get_number(cnvl, "nvlist/number/0") == 0);
+	CHECK(nvlist_get_number(cnvl, "nvlist/number/1") == 1);
+	CHECK((int)nvlist_get_number(cnvl, "nvlist/number/-1") == -1);
+	CHECK(nvlist_get_number(cnvl, "nvlist/number/UINT64_MAX") == UINT64_MAX);
+	CHECK((int64_t)nvlist_get_number(cnvl, "nvlist/number/INT64_MIN") == INT64_MIN);
+	CHECK((int64_t)nvlist_get_number(cnvl, "nvlist/number/INT64_MAX") == INT64_MAX);
+	CHECK(strcmp(nvlist_get_string(cnvl, "nvlist/string/"), "") == 0);
+	CHECK(strcmp(nvlist_get_string(cnvl, "nvlist/string/x"), "x") == 0);
+	CHECK(strcmp(nvlist_get_string(cnvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"), "abcdefghijklmnopqrstuvwxyz") == 0);
+	/* TODO */
+	CHECK(memcmp(nvlist_get_binary(cnvl, "nvlist/binary/x", NULL), "x", 1) == 0);
+	CHECK(memcmp(nvlist_get_binary(cnvl, "nvlist/binary/x", &size), "x", 1) == 0);
+	CHECK(size == 1);
+	CHECK(memcmp(nvlist_get_binary(cnvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", NULL), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(memcmp(nvlist_get_binary(cnvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", &size), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(size == sizeof("abcdefghijklmnopqrstuvwxyz"));
+
+	CHECK(nvlist_get_bool(nvl, "nvlist/bool/true") == true);
+	CHECK(nvlist_get_bool(nvl, "nvlist/bool/false") == false);
+	CHECK(nvlist_get_number(nvl, "nvlist/number/0") == 0);
+	CHECK(nvlist_get_number(nvl, "nvlist/number/1") == 1);
+	CHECK((int)nvlist_get_number(nvl, "nvlist/number/-1") == -1);
+	CHECK(nvlist_get_number(nvl, "nvlist/number/UINT64_MAX") == UINT64_MAX);
+	CHECK((int64_t)nvlist_get_number(nvl, "nvlist/number/INT64_MIN") == INT64_MIN);
+	CHECK((int64_t)nvlist_get_number(nvl, "nvlist/number/INT64_MAX") == INT64_MAX);
+	CHECK(strcmp(nvlist_get_string(nvl, "nvlist/string/"), "") == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, "nvlist/string/x"), "x") == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"), "abcdefghijklmnopqrstuvwxyz") == 0);
+	CHECK(fd_is_valid(nvlist_get_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO")));
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/x", NULL), "x", 1) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/x", &size), "x", 1) == 0);
+	CHECK(size == 1);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", NULL), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", &size), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(size == sizeof("abcdefghijklmnopqrstuvwxyz"));
+
+	nvlist_destroy(nvl);
+
+	return (0);
+}
diff --git a/lib/libnv/tests/nvlist_move_test.c b/lib/libnv/tests/nvlist_move_test.c
new file mode 100644
index 0000000..760399d
--- /dev/null
+++ b/lib/libnv/tests/nvlist_move_test.c
@@ -0,0 +1,161 @@
+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <nv.h>
+
+static int ntest = 1;
+
+#define	CHECK(expr)	do {						\
+	if ((expr))							\
+		printf("ok # %d %s:%u\n", ntest, __FILE__, __LINE__);	\
+	else								\
+		printf("not ok # %d %s:%u\n", ntest, __FILE__, __LINE__);\
+	ntest++;							\
+} while (0)
+
+int
+main(void)
+{
+	const nvlist_t *cnvl;
+	nvlist_t *nvl;
+	void *ptr;
+	size_t size;
+	int fd;
+
+	printf("1..52\n");
+
+	nvl = nvlist_create(0);
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/"));
+	ptr = strdup("");
+	CHECK(ptr != NULL);
+	nvlist_move_string(nvl, "nvlist/string/", ptr);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/"));
+	CHECK(ptr == nvlist_get_string(nvl, "nvlist/string/"));
+
+	CHECK(!nvlist_exists_string(nvl, "nvlist/string/x"));
+	ptr = strdup("x");
+	CHECK(ptr != NULL);
+	nvlist_move_string(nvl, "nvlist/string/x", ptr);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/x"));
+	CHECK(ptr == nvlist_get_string(nvl, "nvlist/string/x"));
+
+	CHECK(!nvlist_exists_string(nvl,
+	    "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	ptr = strdup("abcdefghijklmnopqrstuvwxyz");
+	CHECK(ptr != NULL);
+	nvlist_move_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz",
+	    ptr);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_string(nvl,
+	    "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(ptr ==
+	    nvlist_get_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+
+	CHECK(!nvlist_exists_descriptor(nvl,
+	    "nvlist/descriptor/STDERR_FILENO"));
+	fd = dup(STDERR_FILENO);
+	CHECK(fd >= 0);
+	nvlist_move_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO", fd);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+	CHECK(fd ==
+	    nvlist_get_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+
+	CHECK(!nvlist_exists_binary(nvl, "nvlist/binary/x"));
+	ptr = malloc(1);
+	CHECK(ptr != NULL);
+	memcpy(ptr, "x", 1);
+	nvlist_move_binary(nvl, "nvlist/binary/x", ptr, 1);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary/x"));
+	CHECK(ptr == nvlist_get_binary(nvl, "nvlist/binary/x", NULL));
+	CHECK(ptr == nvlist_get_binary(nvl, "nvlist/binary/x", &size));
+	CHECK(size == 1);
+
+	CHECK(!nvlist_exists_binary(nvl,
+	    "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+	ptr = malloc(sizeof("abcdefghijklmnopqrstuvwxyz"));
+	CHECK(ptr != NULL);
+	memcpy(ptr, "abcdefghijklmnopqrstuvwxyz",
+	    sizeof("abcdefghijklmnopqrstuvwxyz"));
+	nvlist_move_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz",
+	    ptr, sizeof("abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_binary(nvl,
+	    "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(ptr == nvlist_get_binary(nvl,
+	    "nvlist/binary/abcdefghijklmnopqrstuvwxyz", NULL));
+	CHECK(ptr == nvlist_get_binary(nvl,
+	    "nvlist/binary/abcdefghijklmnopqrstuvwxyz", &size));
+	CHECK(size == sizeof("abcdefghijklmnopqrstuvwxyz"));
+
+	CHECK(!nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	ptr = nvlist_clone(nvl);
+	CHECK(ptr != NULL);
+	nvlist_move_nvlist(nvl, "nvlist/nvlist", ptr);
+	CHECK(nvlist_error(nvl) == 0);
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+	CHECK(ptr == nvlist_get_nvlist(nvl, "nvlist/nvlist"));
+
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/"));
+	CHECK(nvlist_exists_string(nvl, "nvlist/string/x"));
+	CHECK(nvlist_exists_string(nvl,
+	    "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_exists_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO"));
+	CHECK(nvlist_exists_binary(nvl, "nvlist/binary/x"));
+	CHECK(nvlist_exists_binary(nvl,
+	    "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_exists_nvlist(nvl, "nvlist/nvlist"));
+
+	cnvl = nvlist_get_nvlist(nvl, "nvlist/nvlist");
+	CHECK(nvlist_exists_string(cnvl, "nvlist/string/"));
+	CHECK(nvlist_exists_string(cnvl, "nvlist/string/x"));
+	CHECK(nvlist_exists_string(cnvl,
+	    "nvlist/string/abcdefghijklmnopqrstuvwxyz"));
+	CHECK(nvlist_exists_descriptor(cnvl,
+	    "nvlist/descriptor/STDERR_FILENO"));
+	CHECK(nvlist_exists_binary(cnvl, "nvlist/binary/x"));
+	CHECK(nvlist_exists_binary(cnvl,
+	    "nvlist/binary/abcdefghijklmnopqrstuvwxyz"));
+
+	nvlist_destroy(nvl);
+
+	return (0);
+}
diff --git a/lib/libnv/tests/nvlist_send_recv_test.c b/lib/libnv/tests/nvlist_send_recv_test.c
new file mode 100644
index 0000000..c751bf7
--- /dev/null
+++ b/lib/libnv/tests/nvlist_send_recv_test.c
@@ -0,0 +1,325 @@
+/*-
+ * Copyright (c) 2013 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <nv.h>
+
+static int ntest = 1;
+
+#define	CHECK(expr)	do {						\
+	if ((expr))							\
+		printf("ok # %d %s:%u\n", ntest, __FILE__, __LINE__);	\
+	else								\
+		printf("not ok # %d %s:%u\n", ntest, __FILE__, __LINE__);\
+	ntest++;							\
+} while (0)
+
+#define	fd_is_valid(fd)	(fcntl((fd), F_GETFL) != -1 || errno != EBADF)
+
+static void
+child(int sock)
+{
+	nvlist_t *nvl;
+
+	nvl = nvlist_create(0);
+
+	nvlist_add_bool(nvl, "nvlist/bool/true", true);
+	nvlist_add_bool(nvl, "nvlist/bool/false", false);
+	nvlist_add_number(nvl, "nvlist/number/0", 0);
+	nvlist_add_number(nvl, "nvlist/number/1", 1);
+	nvlist_add_number(nvl, "nvlist/number/-1", -1);
+	nvlist_add_number(nvl, "nvlist/number/UINT64_MAX", UINT64_MAX);
+	nvlist_add_number(nvl, "nvlist/number/INT64_MIN", INT64_MIN);
+	nvlist_add_number(nvl, "nvlist/number/INT64_MAX", INT64_MAX);
+	nvlist_add_string(nvl, "nvlist/string/", "");
+	nvlist_add_string(nvl, "nvlist/string/x", "x");
+	nvlist_add_string(nvl, "nvlist/string/abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz");
+	nvlist_add_descriptor(nvl, "nvlist/descriptor/STDERR_FILENO", STDERR_FILENO);
+	nvlist_add_binary(nvl, "nvlist/binary/x", "x", 1);
+	nvlist_add_binary(nvl, "nvlist/binary/abcdefghijklmnopqrstuvwxyz", "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz"));
+	nvlist_add_nvlist(nvl, "nvlist/nvlist", nvl);
+
+	nvlist_send(sock, nvl);
+
+	nvlist_destroy(nvl);
+}
+
+static void
+parent(int sock)
+{
+	nvlist_t *nvl;
+	const nvlist_t *cnvl;
+	const char *name, *cname;
+	void *cookie, *ccookie;
+	int type, ctype;
+	size_t size;
+
+	nvl = nvlist_recv(sock);
+	CHECK(nvlist_error(nvl) == 0);
+	if (nvlist_error(nvl) != 0)
+		err(1, "nvlist_recv() failed");
+
+	cookie = NULL;
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_BOOL);
+	CHECK(strcmp(name, "nvlist/bool/true") == 0);
+	CHECK(nvlist_get_bool(nvl, name) == true);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_BOOL);
+	CHECK(strcmp(name, "nvlist/bool/false") == 0);
+	CHECK(nvlist_get_bool(nvl, name) == false);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NUMBER);
+	CHECK(strcmp(name, "nvlist/number/0") == 0);
+	CHECK(nvlist_get_number(nvl, name) == 0);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NUMBER);
+	CHECK(strcmp(name, "nvlist/number/1") == 0);
+	CHECK(nvlist_get_number(nvl, name) == 1);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NUMBER);
+	CHECK(strcmp(name, "nvlist/number/-1") == 0);
+	CHECK((int)nvlist_get_number(nvl, name) == -1);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NUMBER);
+	CHECK(strcmp(name, "nvlist/number/UINT64_MAX") == 0);
+	CHECK(nvlist_get_number(nvl, name) == UINT64_MAX);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NUMBER);
+	CHECK(strcmp(name, "nvlist/number/INT64_MIN") == 0);
+	CHECK((int64_t)nvlist_get_number(nvl, name) == INT64_MIN);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NUMBER);
+	CHECK(strcmp(name, "nvlist/number/INT64_MAX") == 0);
+	CHECK((int64_t)nvlist_get_number(nvl, name) == INT64_MAX);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_STRING);
+	CHECK(strcmp(name, "nvlist/string/") == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, name), "") == 0);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_STRING);
+	CHECK(strcmp(name, "nvlist/string/x") == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, name), "x") == 0);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_STRING);
+	CHECK(strcmp(name, "nvlist/string/abcdefghijklmnopqrstuvwxyz") == 0);
+	CHECK(strcmp(nvlist_get_string(nvl, name), "abcdefghijklmnopqrstuvwxyz") == 0);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_DESCRIPTOR);
+	CHECK(strcmp(name, "nvlist/descriptor/STDERR_FILENO") == 0);
+	CHECK(fd_is_valid(nvlist_get_descriptor(nvl, name)));
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_BINARY);
+	CHECK(strcmp(name, "nvlist/binary/x") == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, name, NULL), "x", 1) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, name, &size), "x", 1) == 0);
+	CHECK(size == 1);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_BINARY);
+	CHECK(strcmp(name, "nvlist/binary/abcdefghijklmnopqrstuvwxyz") == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, name, NULL), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(memcmp(nvlist_get_binary(nvl, name, &size), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(size == sizeof("abcdefghijklmnopqrstuvwxyz"));
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name != NULL);
+	CHECK(type == NV_TYPE_NVLIST);
+	CHECK(strcmp(name, "nvlist/nvlist") == 0);
+	cnvl = nvlist_get_nvlist(nvl, name);
+
+	ccookie = NULL;
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_BOOL);
+	CHECK(strcmp(cname, "nvlist/bool/true") == 0);
+	CHECK(nvlist_get_bool(cnvl, cname) == true);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_BOOL);
+	CHECK(strcmp(cname, "nvlist/bool/false") == 0);
+	CHECK(nvlist_get_bool(cnvl, cname) == false);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_NUMBER);
+	CHECK(strcmp(cname, "nvlist/number/0") == 0);
+	CHECK(nvlist_get_number(cnvl, cname) == 0);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_NUMBER);
+	CHECK(strcmp(cname, "nvlist/number/1") == 0);
+	CHECK(nvlist_get_number(cnvl, cname) == 1);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_NUMBER);
+	CHECK(strcmp(cname, "nvlist/number/-1") == 0);
+	CHECK((int)nvlist_get_number(cnvl, cname) == -1);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_NUMBER);
+	CHECK(strcmp(cname, "nvlist/number/UINT64_MAX") == 0);
+	CHECK(nvlist_get_number(cnvl, cname) == UINT64_MAX);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_NUMBER);
+	CHECK(strcmp(cname, "nvlist/number/INT64_MIN") == 0);
+	CHECK((int64_t)nvlist_get_number(cnvl, cname) == INT64_MIN);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_NUMBER);
+	CHECK(strcmp(cname, "nvlist/number/INT64_MAX") == 0);
+	CHECK((int64_t)nvlist_get_number(cnvl, cname) == INT64_MAX);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_STRING);
+	CHECK(strcmp(cname, "nvlist/string/") == 0);
+	CHECK(strcmp(nvlist_get_string(cnvl, cname), "") == 0);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_STRING);
+	CHECK(strcmp(cname, "nvlist/string/x") == 0);
+	CHECK(strcmp(nvlist_get_string(cnvl, cname), "x") == 0);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_STRING);
+	CHECK(strcmp(cname, "nvlist/string/abcdefghijklmnopqrstuvwxyz") == 0);
+	CHECK(strcmp(nvlist_get_string(cnvl, cname), "abcdefghijklmnopqrstuvwxyz") == 0);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_DESCRIPTOR);
+	CHECK(strcmp(cname, "nvlist/descriptor/STDERR_FILENO") == 0);
+	CHECK(fd_is_valid(nvlist_get_descriptor(cnvl, cname)));
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_BINARY);
+	CHECK(strcmp(cname, "nvlist/binary/x") == 0);
+	CHECK(memcmp(nvlist_get_binary(cnvl, cname, NULL), "x", 1) == 0);
+	CHECK(memcmp(nvlist_get_binary(cnvl, cname, &size), "x", 1) == 0);
+	CHECK(size == 1);
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname != NULL);
+	CHECK(ctype == NV_TYPE_BINARY);
+	CHECK(strcmp(cname, "nvlist/binary/abcdefghijklmnopqrstuvwxyz") == 0);
+	CHECK(memcmp(nvlist_get_binary(cnvl, cname, NULL), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(memcmp(nvlist_get_binary(cnvl, cname, &size), "abcdefghijklmnopqrstuvwxyz", sizeof("abcdefghijklmnopqrstuvwxyz")) == 0);
+	CHECK(size == sizeof("abcdefghijklmnopqrstuvwxyz"));
+
+	cname = nvlist_next(cnvl, &ctype, &ccookie);
+	CHECK(cname == NULL);
+
+	name = nvlist_next(nvl, &type, &cookie);
+	CHECK(name == NULL);
+}
+
+int
+main(void)
+{
+	int status, socks[2];
+	pid_t pid;
+
+	printf("1..126\n");
+	fflush(stdout);
+
+	if (socketpair(PF_UNIX, SOCK_STREAM, 0, socks) < 0)
+		err(1, "socketpair() failed");
+	pid = fork();
+	switch (pid) {
+	case -1:
+		/* Failure. */
+		err(1, "unable to fork");
+	case 0:
+		/* Child. */
+		close(socks[0]);
+		child(socks[1]);
+		return (0);
+	default:
+		/* Parent. */
+		close(socks[1]);
+		parent(socks[0]);
+		break;
+	}
+
+	if (waitpid(pid, &status, 0) < 0)
+		err(1, "waitpid() failed");
+
+	return (0);
+}