Print this page
3996 want a libzfs_core API to rollback to latest snapshot
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
@@ -18,11 +18,11 @@
*
* CDDL HEADER END
*/
/*
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
*/
/*
* LibZFS_Core (lzc) is intended to replace most functionality in libzfs.
@@ -578,6 +578,30 @@
out:
if (packed != NULL)
fnvlist_pack_free(packed, size);
free((void*)(uintptr_t)zc.zc_nvlist_dst);
return (error);
+}
+
+/*
+ * Roll back this filesystem or volume to its most recent snapshot.
+ * If snapnamebuf is not NULL, it will be filled in with the name
+ * of the most recent snapshot.
+ *
+ * Return 0 on success or an errno on failure.
+ */
+int
+lzc_rollback(const char *fsname, char *snapnamebuf, int snapnamelen)
+{
+ nvlist_t *args;
+ nvlist_t *result;
+ int err;
+
+ args = fnvlist_alloc();
+ err = lzc_ioctl(ZFS_IOC_ROLLBACK, fsname, args, &result);
+ nvlist_free(args);
+ if (err == 0 && snapnamebuf != NULL) {
+ const char *snapname = fnvlist_lookup_string(result, "target");
+ (void) strlcpy(snapnamebuf, snapname, snapnamelen);
+ }
+ return (err);
}