From 5afa7e8b70d65819245fece61a65fd753b4aae33 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 17 Apr 2021 23:03:50 -0400 Subject: fs: fix reporting supported extra file attributes for statx() 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 --- fs/stat.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs/stat.c') diff --git a/fs/stat.c b/fs/stat.c index fbc171d038aa..1fa38bdec1a6 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -86,12 +86,20 @@ 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); + mnt_userns = mnt_user_ns(path->mnt); if (inode->i_op->getattr) return inode->i_op->getattr(mnt_userns, path, stat, -- cgit