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| author | Theodore Ts'o <tytso@mit.edu> | 2021-04-18 06:03:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-11 15:47:33 +0300 |
| commit | 1b41d4e5aa75675c915cbed09e2a7813f3fd2e49 (patch) | |
| tree | 7a75874f44c38901f8df70231503b942e5109c32 /fs/stat.c | |
| parent | dc4b67baba3ba257695dc5a52391d3aecf9ec6e5 (diff) | |
| download | linux-1b41d4e5aa75675c915cbed09e2a7813f3fd2e49.tar.xz | |
fs: fix reporting supported extra file attributes for statx()
commit 5afa7e8b70d65819245fece61a65fd753b4aae33 upstream.
statx(2) notes that any attribute that is not indicated as supported
by stx_attributes_mask has no usable value. Commits 801e523796004
("fs: move generic stat response attr handling to vfs_getattr_nosec")
and 712b2698e4c02 ("fs/stat: Define DAX statx attribute") sets
STATX_ATTR_AUTOMOUNT and STATX_ATTR_DAX, respectively, without setting
stx_attributes_mask, which can cause xfstests generic/532 to fail.
Fix this in the same way as commit 1b9598c8fb99 ("xfs: fix reporting
supported extra file attributes for statx()")
Fixes: 801e523796004 ("fs: move generic stat response attr handling to vfs_getattr_nosec")
Fixes: 712b2698e4c02 ("fs/stat: Define DAX statx attribute")
Cc: stable@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/stat.c')
| -rw-r--r-- | fs/stat.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/stat.c b/fs/stat.c index dacecdda2e79..1196af4d1ea0 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -77,12 +77,20 @@ int vfs_getattr_nosec(const struct path *path, struct kstat *stat, /* SB_NOATIME means filesystem supplies dummy atime value */ if (inode->i_sb->s_flags & SB_NOATIME) stat->result_mask &= ~STATX_ATIME; + + /* + * Note: If you add another clause to set an attribute flag, please + * update attributes_mask below. + */ if (IS_AUTOMOUNT(inode)) stat->attributes |= STATX_ATTR_AUTOMOUNT; if (IS_DAX(inode)) stat->attributes |= STATX_ATTR_DAX; + stat->attributes_mask |= (STATX_ATTR_AUTOMOUNT | + STATX_ATTR_DAX); + if (inode->i_op->getattr) return inode->i_op->getattr(path, stat, request_mask, query_flags); |