[Libguestfs] [PATCH v3.1 5/9] New API: btrfs_set_uuid_random

Signed-off-by: Chen Hanxiao <chenhanxiao(a)cn.fujitsu.com&gt; --- daemon/btrfs.c | 21 +++++++++++++++++++++ daemon/daemon.h | 1 + 2 files changed, 22 insertions(+) diff --git a/daemon/btrfs.c b/daemon/btrfs.c index a69c512..a3f3590 100644 --- a/daemon/btrfs.c +++ b/daemon/btrfs.c @@ -867,6 +867,27 @@ btrfs_set_uuid (const char *device, const char *uuid) return 0; } +int +btrfs_set_uuid_random (const char *device) +{ + CLEANUP_FREE char *err = NULL; + int r; + int has_uuid_opts = test_btrfstune_uuid_opt(); + + if (has_uuid_opts <= 0) { + reply_with_error_errno (ENOTSUP, "btrfs filesystems' UUID cannot be changed"); + return -1; + } + + r = commandr (NULL, &err, str_btrfstune, "-f", "-u", device, NULL); + if (r == -1) { + reply_with_error ("%s: %s", device, err); + return -1; + } + + return 0; +} + /* Takes optional arguments, consult optargs_bitmask. */ int do_btrfs_fsck (const char *device, int64_t superblock, int repair) diff --git a/daemon/daemon.h b/daemon/daemon.h index d4c8c11..5087327 100644 --- a/daemon/daemon.h +++ b/daemon/daemon.h @@ -270,6 +270,7 @@ extern char *debug_bmap_device (const char *subcmd, size_t argc, char *const *co /*-- in btrfs.c --*/ extern char *btrfs_get_label (const char *device); extern int btrfs_set_uuid (const char *device, const char *uuid); +extern int btrfs_set_uuid_random (const char *device); /*-- in ntfs.c --*/ extern char *ntfs_get_label (const char *device); -- 2.1.0