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btrfs-progs: fragments: use btrfs_open_dir for btrfs-fragments command 

We can use btrfs_open_dir() to check whether target dir is
in btrfs's mount point before open, instead of checking it in
deeper code, and return fuzzy error message.

Before patch:
  ./btrfs-fragments -o 123 /mnt/tmp1
  ERROR: can't perform the search

After patch:
  # ./btrfs-fragments -o 123 /mnt/tmp1
  ERROR: not a btrfs filesystem: /mnt/tmp1

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Zhao Lei 2015-10-12 21:23:04 +08:00 committed by David Sterba
parent 0b4e2d0c8a
commit 14ac985146
1 changed files with 2 additions and 4 deletions
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6
btrfs-fragments.c
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@ -436,11 +436,9 @@ int main(int argc, char **argv)
path = argv[optind++];
fd = open_file_or_dir(path, &dirstream);
if (fd < 0) {
fprintf(stderr, "ERROR: can't access '%s'\n", path);
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
exit(1);
}
if (flags == 0)
flags = BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA;