diff options
Diffstat (limited to 'src/core/umount.c')
-rw-r--r-- | src/core/umount.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/src/core/umount.c b/src/core/umount.c index 1e5459ed80..2f4b12bdb9 100644 --- a/src/core/umount.c +++ b/src/core/umount.c @@ -344,24 +344,29 @@ static int delete_loopback(const char *device) { } static int delete_dm(dev_t devnum) { - _cleanup_close_ int fd = -1; - int r; + struct dm_ioctl dm = { - .version = {DM_VERSION_MAJOR, - DM_VERSION_MINOR, - DM_VERSION_PATCHLEVEL}, + .version = { + DM_VERSION_MAJOR, + DM_VERSION_MINOR, + DM_VERSION_PATCHLEVEL + }, .data_size = sizeof(dm), .dev = devnum, }; + _cleanup_close_ int fd = -1; + assert(major(devnum) != 0); fd = open("/dev/mapper/control", O_RDWR|O_CLOEXEC); if (fd < 0) return -errno; - r = ioctl(fd, DM_DEV_REMOVE, &dm); - return r >= 0 ? 0 : -errno; + if (ioctl(fd, DM_DEV_REMOVE, &dm) < 0) + return -errno; + + return 0; } static int mount_points_list_umount(MountPoint **head, bool *changed, bool log_error) { |