Merge remote-tracking branches 'regmap/topic/devm-irq', 'regmap/topic/doc', 'regmap...

[karo-tx-linux.git] / fs / ext4 / namei.c

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 06574dd77614a3b1c4396d5bb3c017c681209d00..48e4b8907826eca52a1e94e14bdfdb0fd2240c56 100644 (file)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1558,6 +1558,24 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi
        struct ext4_dir_entry_2 *de;
        struct buffer_head *bh;
 
+       if (ext4_encrypted_inode(dir)) {
+               int res = ext4_get_encryption_info(dir);
+
+               /*
+                * This should be a properly defined flag for
+                * dentry->d_flags when we uplift this to the VFS.
+                * d_fsdata is set to (void *) 1 if if the dentry is
+                * created while the directory was encrypted and we
+                * don't have access to the key.
+                */
+              dentry->d_fsdata = NULL;
+              if (ext4_encryption_info(dir))
+                      dentry->d_fsdata = (void *) 1;
+              d_set_d_op(dentry, &ext4_encrypted_d_ops);
+              if (res && res != -ENOKEY)
+                      return ERR_PTR(res);
+       }
+
        if (dentry->d_name.len > EXT4_NAME_LEN)
                return ERR_PTR(-ENAMETOOLONG);
 
@@ -1585,11 +1603,15 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi
                        return ERR_PTR(-EFSCORRUPTED);
                }
                if (!IS_ERR(inode) && ext4_encrypted_inode(dir) &&
-                   (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
-                    S_ISLNK(inode->i_mode)) &&
+                   (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
                    !ext4_is_child_context_consistent_with_parent(dir,
                                                                  inode)) {
+                       int nokey = ext4_encrypted_inode(inode) &&
+                               !ext4_encryption_info(inode);
+
                        iput(inode);
+                       if (nokey)
+                               return ERR_PTR(-ENOKEY);
                        ext4_warning(inode->i_sb,
                                     "Inconsistent encryption contexts: %lu/%lu\n",
                                     (unsigned long) dir->i_ino,