diff options
Diffstat (limited to 'fs/overlayfs/inode.c')
| -rw-r--r-- | fs/overlayfs/inode.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index c75625c..ce5d7df 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -19,6 +19,7 @@ static int ovl_copy_up_truncate(struct dentry *dentry) struct dentry *parent; struct kstat stat; struct path lowerpath; + const struct cred *old_cred; parent = dget_parent(dentry); err = ovl_copy_up(parent); @@ -26,12 +27,14 @@ static int ovl_copy_up_truncate(struct dentry *dentry) goto out_dput_parent; ovl_path_lower(dentry, &lowerpath); - err = vfs_getattr(&lowerpath, &stat); - if (err) - goto out_dput_parent; - stat.size = 0; - err = ovl_copy_up_one(parent, dentry, &lowerpath, &stat); + old_cred = ovl_override_creds(dentry->d_sb); + err = vfs_getattr(&lowerpath, &stat); + if (!err) { + stat.size = 0; + err = ovl_copy_up_one(parent, dentry, &lowerpath, &stat); + } + revert_creds(old_cred); out_dput_parent: dput(parent); |