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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: 2f1e81965f ("fuse: allow fine grained attr cache invaldation")
This commit is contained in:
Miklos Szeredi 2018-12-03 10:14:43 +01:00
parent a9c2d1e82f
commit d233c7dd16
1 changed files with 3 additions and 1 deletions
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4
fs/fuse/dir.c
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@ -1119,8 +1119,10 @@ static int fuse_permission(struct inode *inode, int mask)
if (fc->default_permissions || if (fc->default_permissions ||
((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) { ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {
struct fuse_inode *fi = get_fuse_inode(inode); 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; refreshed = true;
err = fuse_perm_getattr(inode, mask); err = fuse_perm_getattr(inode, mask);