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authorMiao Xie <miaox@cn.fujitsu.com>2013-07-03 21:25:10 +0800
committerChris Mason <chris.mason@fusionio.com>2013-07-03 14:06:54 -0400
commit0daa219ee1119e30059077da5be03c4506963fe2 (patch)
tree7fc42861f945e853321147bf7a4a0f0e556ef270 /btrfs-find-root.c
parent32a8c1dd905714e91b7d590aa7d833c475e737d4 (diff)
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Btrfs-progs: don't close the file descriptor 0 when closing a device
As we know, the file descriptor 0 is a special number, so we shouldn't use it to initialize the file descriptor of the devices, or we might close this special file descriptor by mistake when we close the devices. "-1" is a better choice. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'btrfs-find-root.c')
-rw-r--r--btrfs-find-root.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/btrfs-find-root.c b/btrfs-find-root.c
index 810d835..3e1396d 100644
--- a/btrfs-find-root.c
+++ b/btrfs-find-root.c
@@ -76,7 +76,10 @@ static int close_all_devices(struct btrfs_fs_info *fs_info)
list = &fs_info->fs_devices->devices;
list_for_each(next, list) {
device = list_entry(next, struct btrfs_device, dev_list);
- close(device->fd);
+ if (device->fd != -1) {
+ close(device->fd);
+ device->fd = -1;
+ }
}
return 0;
}