diff options
Diffstat (limited to 'mkfs/rootdir.c')
| -rw-r--r-- | mkfs/rootdir.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/mkfs/rootdir.c b/mkfs/rootdir.c index 0dc022b0..9be4bcbf 100644 --- a/mkfs/rootdir.c +++ b/mkfs/rootdir.c @@ -899,11 +899,13 @@ err: return ret; } -int btrfs_mkfs_shrink_fs(struct btrfs_fs_info *fs_info, u64 *new_size_ret) +int btrfs_mkfs_shrink_fs(struct btrfs_fs_info *fs_info, u64 *new_size_ret, + bool shrink_file_size) { u64 new_size; struct btrfs_device *device; struct list_head *cur; + struct stat64 file_stat; int nr_devs = 0; int ret; @@ -931,5 +933,22 @@ int btrfs_mkfs_shrink_fs(struct btrfs_fs_info *fs_info, u64 *new_size_ret) return ret; if (new_size_ret) *new_size_ret = new_size; + + if (shrink_file_size) { + ret = fstat64(device->fd, &file_stat); + if (ret < 0) { + error("failed to stat devid %llu: %s", device->devid, + strerror(errno)); + return ret; + } + if (!S_ISREG(file_stat.st_mode)) + return ret; + ret = ftruncate64(device->fd, new_size); + if (ret < 0) { + error("failed to truncate device file of devid %llu: %s", + device->devid, strerror(errno)); + return ret; + } + } return ret; } |