4 files changed, 36 insertions, 21 deletions

diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_compat.h b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_compat.h
index 881737d898a1..400c81443be9 100644
--- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_compat.h
+++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_compat.h
@@ -32,8 +32,23 @@
 extern "C" {
 #endif
 
+static int zfs_ioctl_version = -1;
 static int zfs_kernel_version = 0;
-static int zfs_ioctl_version = 0;
+
+/*
+ * Get zfs_ioctl_version
+ */
+static __inline int
+get_zfs_ioctl_version(void)
+{
+	size_t ver_size;
+	int ver = 0;
+
+	ver_size = sizeof(ver);
+	sysctlbyname("vfs.zfs.version.ioctl", &ver, &ver_size, NULL, 0);
+
+	return (ver);
+}
 
 /*
  * This is FreeBSD version of ioctl, because Solaris' ioctl() updates
@@ -43,14 +58,11 @@ static int zfs_ioctl_version = 0;
 static __inline int
 zcmd_ioctl(int fd, int request, zfs_cmd_t *zc)
 {
-	size_t oldsize, zfs_kernel_version_size, zfs_ioctl_version_size;
+	size_t oldsize, zfs_kernel_version_size;
 	int version, ret, cflag = ZFS_CMD_COMPAT_NONE;
 
-	zfs_ioctl_version_size = sizeof(zfs_ioctl_version);
-	if (zfs_ioctl_version == 0) {
-		sysctlbyname("vfs.zfs.version.ioctl", &zfs_ioctl_version,
-		    &zfs_ioctl_version_size, NULL, 0);
-	}
+	if (zfs_ioctl_version == -1)
+		zfs_ioctl_version = get_zfs_ioctl_version();
 
 	if (zfs_ioctl_version == ZFS_IOCVER_DEADMAN)
 		cflag = ZFS_CMD_COMPAT_DEADMAN;
diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c
index c8b401e2f612..3319d20e7c72 100644
--- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c
+++ b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c
@@ -84,10 +84,11 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/zfs_ioctl.h>
-#include <libzfs_compat.h>
+#include "libzfs_core_compat.h"
+#include "libzfs_compat.h"
 
 #ifdef __FreeBSD__
-extern int zfs_ioctl_version;
+int lzc_ioctl_version = -1;
 #endif
 
 static int g_fd;
@@ -107,6 +108,7 @@ libzfs_core_init(void)
 	}
 	g_refcount++;
 	(void) pthread_mutex_unlock(&g_lock);
+
 	return (0);
 }
 
@@ -138,7 +140,10 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name,
 	(void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name));
 
 #ifdef __FreeBSD__
-	if (zfs_ioctl_version < ZFS_IOCVER_LZC) {
+	if (lzc_ioctl_version == -1)
+		lzc_ioctl_version = get_zfs_ioctl_version();
+
+	if (lzc_ioctl_version < ZFS_IOCVER_LZC) {
 		oldsource = source;
 		error = lzc_compat_pre(&zc, &ioc, &source);
 		if (error)
@@ -185,7 +190,7 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name,
 	}
 
 #ifdef __FreeBSD__
-	if (zfs_ioctl_version < ZFS_IOCVER_LZC)
+	if (lzc_ioctl_version < ZFS_IOCVER_LZC)
 		lzc_compat_post(&zc, ioc);
 #endif
 	if (zc.zc_nvlist_dst_filled) {
@@ -195,12 +200,12 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name,
 		*resultp = NULL;
 	}
 #ifdef __FreeBSD__
-	if (zfs_ioctl_version < ZFS_IOCVER_LZC)
+	if (lzc_ioctl_version < ZFS_IOCVER_LZC)
 		lzc_compat_outnvl(&zc, ioc, resultp);
 #endif
 out:
 #ifdef __FreeBSD__
-	if (zfs_ioctl_version < ZFS_IOCVER_LZC) {
+	if (lzc_ioctl_version < ZFS_IOCVER_LZC) {
 		if (source != oldsource)
 			nvlist_free(source);
 		source = oldsource;
diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h
index ee19d17af24f..c8bfbefbdaf5 100644
--- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h
+++ b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h
@@ -31,9 +31,6 @@
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/fs/zfs.h>
-#ifdef __FreeBSD__
-#include "libzfs_core_compat.h"
-#endif
 
 #ifdef	__cplusplus
 extern "C" {
diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c
index e5eb7aeacc6f..0ab12b627f78 100644
--- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c
+++ b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c
@@ -24,9 +24,10 @@
  */
 
 #include <sys/zfs_ioctl.h>
-#include <libzfs_compat.h>
+#include <zfs_ioctl_compat.h>
+#include "libzfs_core_compat.h"
 
-extern int zfs_ioctl_version;
+extern int lzc_ioctl_version;
 
 int
 lzc_compat_pre(zfs_cmd_t *zc, zfs_ioc_t *ioc, nvlist_t **source)
@@ -39,7 +40,7 @@ lzc_compat_pre(zfs_cmd_t *zc, zfs_ioc_t *ioc, nvlist_t **source)
 	int error = 0;
 	int pos;
 
-	if (zfs_ioctl_version >= ZFS_IOCVER_LZC)
+	if (lzc_ioctl_version >= ZFS_IOCVER_LZC)
 		return (0);
 
 	vecnum = *ioc;
@@ -98,7 +99,7 @@ lzc_compat_pre(zfs_cmd_t *zc, zfs_ioc_t *ioc, nvlist_t **source)
 void
 lzc_compat_post(zfs_cmd_t *zc, const zfs_ioc_t ioc)
 {
-	if (zfs_ioctl_version >= ZFS_IOCVER_LZC)
+	if (lzc_ioctl_version >= ZFS_IOCVER_LZC)
 		return;
 
 	switch (ioc) {
@@ -117,7 +118,7 @@ lzc_compat_outnvl(zfs_cmd_t *zc, const zfs_ioc_t ioc, nvlist_t **outnvl)
 {
 	nvlist_t *nvl;
 
-	if (zfs_ioctl_version >= ZFS_IOCVER_LZC)
+	if (lzc_ioctl_version >= ZFS_IOCVER_LZC)
 		return (0);
 
 	switch (ioc) {