diff options
| -rw-r--r-- | fs/overlayfs/copy_up.c | 9 | ||||
| -rw-r--r-- | fs/overlayfs/inode.c | 13 |
2 files changed, 11 insertions, 11 deletions
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index abadbc3..796d06f 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -348,7 +348,6 @@ int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry, struct path parentpath; struct dentry *upperdir; struct dentry *upperdentry; - const struct cred *old_cred; char *link = NULL; if (WARN_ON(!workdir)) @@ -369,8 +368,6 @@ int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry, return PTR_ERR(link); } - old_cred = ovl_override_creds(dentry->d_sb); - err = -EIO; if (lock_rename(workdir, upperdir) != NULL) { pr_err("overlayfs: failed to lock workdir+upperdir\n"); @@ -391,7 +388,6 @@ int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry, } out_unlock: unlock_rename(workdir, upperdir); - revert_creds(old_cred); if (link) free_page((unsigned long) link); @@ -401,9 +397,9 @@ out_unlock: int ovl_copy_up(struct dentry *dentry) { - int err; + int err = 0; + const struct cred *old_cred = ovl_override_creds(dentry->d_sb); - err = 0; while (!err) { struct dentry *next; struct dentry *parent; @@ -435,6 +431,7 @@ int ovl_copy_up(struct dentry *dentry) dput(parent); dput(next); } + revert_creds(old_cred); return err; } 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); |
