diff options
Diffstat (limited to 'disk-io.c')
-rw-r--r-- | disk-io.c | 10 |
1 files changed, 8 insertions, 2 deletions
@@ -1057,6 +1057,7 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp, const char *path, struct btrfs_fs_devices *fs_devices = NULL; struct extent_buffer *eb; int ret; + int oflags; if (sb_bytenr == 0) sb_bytenr = BTRFS_SUPER_INFO_OFFSET; @@ -1080,9 +1081,14 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp, const char *path, fs_info->fs_devices = fs_devices; if (flags & OPEN_CTREE_WRITES) - ret = btrfs_open_devices(fs_devices, O_RDWR); + oflags = O_RDWR; else - ret = btrfs_open_devices(fs_devices, O_RDONLY); + oflags = O_RDONLY; + + if (flags & OPEN_CTREE_EXCLUSIVE) + oflags |= O_EXCL; + + ret = btrfs_open_devices(fs_devices, oflags); if (ret) goto out_devices; |