[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/fs/jffs2/security.c b/ap/os/linux/linux-3.4.x/fs/jffs2/security.c
new file mode 100644
index 0000000..aca97f3
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/jffs2/security.c
@@ -0,0 +1,89 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 2006 NEC Corporation
+ *
+ * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/pagemap.h>
+#include <linux/highmem.h>
+#include <linux/crc32.h>
+#include <linux/jffs2.h>
+#include <linux/xattr.h>
+#include <linux/mtd/mtd.h>
+#include <linux/security.h>
+#include "nodelist.h"
+
+/* ---- Initial Security Label(s) Attachment callback --- */
+static int jffs2_initxattrs(struct inode *inode,
+ const struct xattr *xattr_array, void *fs_info)
+{
+ const struct xattr *xattr;
+ int err = 0;
+
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+ err = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY,
+ xattr->name, xattr->value,
+ xattr->value_len, 0);
+ if (err < 0)
+ break;
+ }
+ return err;
+}
+
+/* ---- Initial Security Label(s) Attachment ----------- */
+int jffs2_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
+{
+ return security_inode_init_security(inode, dir, qstr,
+ &jffs2_initxattrs, NULL);
+}
+
+/* ---- XATTR Handler for "security.*" ----------------- */
+static int jffs2_security_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_SECURITY,
+ name, buffer, size);
+}
+
+static int jffs2_security_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_SECURITY,
+ name, buffer, size, flags);
+}
+
+static size_t jffs2_security_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
+{
+ size_t retlen = XATTR_SECURITY_PREFIX_LEN + name_len + 1;
+
+ if (list && retlen <= list_size) {
+ strcpy(list, XATTR_SECURITY_PREFIX);
+ strcpy(list + XATTR_SECURITY_PREFIX_LEN, name);
+ }
+
+ return retlen;
+}
+
+const struct xattr_handler jffs2_security_xattr_handler = {
+ .prefix = XATTR_SECURITY_PREFIX,
+ .list = jffs2_security_listxattr,
+ .set = jffs2_security_setxattr,
+ .get = jffs2_security_getxattr
+};