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| author | Qu Wenruo <wqu@suse.com> | 2018-03-28 14:39:09 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-03-30 22:15:55 +0200 |
| commit | 4e6e5804f2153efc85cfd1efaeabbaa5b7e8c02e (patch) | |
| tree | 05b1f34d96d64e5f64eafd67280096279aa1499c /cmds-filesystem.c | |
| parent | 3fd6a955f91cfd0fabdab8ab441938879f7d692d (diff) | |
btrfs-progs: mkfs/rootdir: Don't follow symbolic link when calcuating size
[BUG]
If we have a symbolic link in rootdir pointing to non-existing location,
mkfs.btrfs --rootdir will just fail:
------
$ mkfs.btrfs -f --rootdir /tmp/rootdir/ /dev/data/btrfs
btrfs-progs v4.15.1
See http://btrfs.wiki.kernel.org for more information.
ERROR: ftw subdir walk of /tmp/rootdir/ failed: No such file or directory
------
[CAUSE]
Commit 599a0abed564 ("btrfs-progs: mkfs/rootdir: Use over-reserve method
to make size estimate easier") add extra ftw walk to estimate the
filesystem size.
Such default ftw walk will follow symbolic link and gives ENOENT error.
[FIX]
Use nftw() to specify FTW_PHYS so we won't follow symbolic link for size
calculation.
Issue: #109
Reported-by: Alexander Kanavin <alexander.kanavin@intel.com>
Fixes: 599a0abed564 ("btrfs-progs: mkfs/rootdir: Use over-reserve method to make size estimate easier")
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'cmds-filesystem.c')
0 files changed, 0 insertions, 0 deletions