Fix receive when dataset has no / in its name.

Submitted by:	James R. Van Artsdalen <james-freebsd-current@jrv.org>

Index: cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c
===================================================================
RCS file: /zoo/pjd/repo/src/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c,v
retrieving revision 1.2
diff -u -p -r1.2 libzfs_sendrecv.c
--- cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c	27 Dec 2008 14:17:15 -0000	1.2
+++ cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c	4 Aug 2009 22:43:44 -0000
@@ -1126,7 +1126,7 @@ again:
 		uint64_t originguid = 0;
 		uint64_t stream_originguid = 0;
 		uint64_t parent_fromsnap_guid, stream_parent_fromsnap_guid;
-		char *fsname, *stream_fsname;
+		char *fsname, *stream_fsname, *p1, *p2;
 
 		nextfselem = nvlist_next_nvpair(local_nv, fselem);
 
@@ -1295,10 +1295,11 @@ again:
 		    "parentfromsnap", &stream_parent_fromsnap_guid));
 
 		/* check for rename */
+		p1 = strrchr(fsname, '/');
+		p2 = strrchr(stream_fsname, '/');
 		if ((stream_parent_fromsnap_guid != 0 &&
 		    stream_parent_fromsnap_guid != parent_fromsnap_guid) ||
-		    strcmp(strrchr(fsname, '/'),
-		    strrchr(stream_fsname, '/')) != 0) {
+		    (p1 != NULL && p2 != NULL && strcmp (p1, p2) != 0)) {
 			nvlist_t *parent;
 			char tryname[ZFS_MAXNAMELEN];
 
@@ -1317,7 +1318,7 @@ again:
 				VERIFY(0 == nvlist_lookup_string(parent, "name",
 				    &pname));
 				(void) snprintf(tryname, sizeof (tryname),
-				    "%s%s", pname, strrchr(stream_fsname, '/'));
+				    "%s%s", pname, p2 != NULL ? p2 : "");
 			} else {
 				tryname[0] = '\0';
 				if (flags.verbose) {