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Diffstat (limited to '')
| -rw-r--r-- | fs/overlayfs/inode.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 76cfe9d04e64..1b885c156028 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -137,8 +137,11 @@ int ovl_permission(struct inode *inode, int mask) return err; old_cred = ovl_override_creds(inode->i_sb); - if (!is_upper && !special_file(realinode->i_mode)) + if (!is_upper && !special_file(realinode->i_mode) && mask & MAY_WRITE) { mask &= ~(MAY_WRITE | MAY_APPEND); + /* Make sure mounter can read file for copy up later */ + mask |= MAY_READ; + } err = inode_permission(realinode, mask); revert_creds(old_cred); |