From 1b0e7b9e07f0d8a61c4240dc05633e83c63ca643 Mon Sep 17 00:00:00 2001 From: delphij Date: Wed, 21 Aug 2013 00:04:31 +0000 Subject: MFV r254421: Illumos ZFS issues: 3996 want a libzfs_core API to rollback to latest snapshot --- .../lib/libzfs_core/common/libzfs_core.c | 26 +++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c') 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 c5c3b0e..6f4b46c 100644 --- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c +++ b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c @@ -20,7 +20,7 @@ */ /* - * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2013 by Delphix. All rights reserved. * Copyright (c) 2013 Steven Hartland. All rights reserved. */ @@ -628,3 +628,27 @@ out: 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); +} -- cgit v1.1