1 files changed, 47 insertions, 0 deletions

diff --git a/fs/devpts/xattr_security.c b/fs/devpts/xattr_security.c
new file mode 100644
index 000000000000..864cb5c79baa
--- /dev/null
+++ b/fs/devpts/xattr_security.c
@@ -0,0 +1,47 @@
+/*
+ * Security xattr support for devpts.
+ *
+ * Author: Stephen Smalley <sds@epoch.ncsc.mil>
+ * Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+#include <linux/string.h>
+#include <linux/fs.h>
+#include <linux/security.h>
+#include <linux/xattr.h>
+
+static size_t
+devpts_xattr_security_list(struct inode *inode, char *list, size_t list_len,
+                           const char *name, size_t name_len)
+{
+        return security_inode_listsecurity(inode, list, list_len);
+}
+
+static int
+devpts_xattr_security_get(struct inode *inode, const char *name,
+                          void *buffer, size_t size)
+{
+        if (strcmp(name, "") == 0)
+                return -EINVAL;
+        return security_inode_getsecurity(inode, name, buffer, size);
+}
+
+static int
+devpts_xattr_security_set(struct inode *inode, const char *name,
+                          const void *value, size_t size, int flags)
+{
+        if (strcmp(name, "") == 0)
+                return -EINVAL;
+        return security_inode_setsecurity(inode, name, value, size, flags);
+}
+
+struct xattr_handler devpts_xattr_security_handler = {
+        .prefix = XATTR_SECURITY_PREFIX,
+        .list   = devpts_xattr_security_list,
+        .get    = devpts_xattr_security_get,
+        .set    = devpts_xattr_security_set,
+};