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authorMiklos Szeredi <mszeredi@redhat.com>2018-12-03 12:14:43 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2018-12-03 12:14:43 +0300
commitd233c7dd1682437ba4b430b04766aa6eef9aef67 (patch)
tree72a1116cb4e9fb331a9bf35fe0f5ee3858c98579 /fs/fuse
parenta9c2d1e82fc2937baf43c0d400f0c9e87dcf035d (diff)
downloadlinux-d233c7dd1682437ba4b430b04766aa6eef9aef67.tar.xz
fuse: fix revalidation of attributes for permission check
fuse_invalidate_attr() now sets fi->inval_mask instead of fi->i_time, hence we need to check the inval mask in fuse_permission() as well. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Fixes: 2f1e81965fd0 ("fuse: allow fine grained attr cache invaldation")
Diffstat (limited to 'fs/fuse')
-rw-r--r--fs/fuse/dir.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 56931dfdcc46..dc4e83d8ace7 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1119,8 +1119,10 @@ static int fuse_permission(struct inode *inode, int mask)
if (fc->default_permissions ||
((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {
struct fuse_inode *fi = get_fuse_inode(inode);
+ u32 perm_mask = STATX_MODE | STATX_UID | STATX_GID;
- if (time_before64(fi->i_time, get_jiffies_64())) {
+ if (perm_mask & READ_ONCE(fi->inval_mask) ||
+ time_before64(fi->i_time, get_jiffies_64())) {
refreshed = true;
err = fuse_perm_getattr(inode, mask);