LXR linux/fs/jffs2/xattr

   1/*
   2 * JFFS2 -- Journalling Flash File System, Version 2.
   3 *
   4 * Copyright © 2006  NEC Corporation
   5 *
   6 * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
   7 *
   8 * For licensing information, see the file 'LICENCE' in this directory.
   9 *
  10 */
  11
  12#include <linux/kernel.h>
  13#include <linux/fs.h>
  14#include <linux/jffs2.h>
  15#include <linux/xattr.h>
  16#include <linux/mtd/mtd.h>
  17#include "nodelist.h"
  18
  19static int jffs2_trusted_getxattr(struct inode *inode, const char *name,
  20                                  void *buffer, size_t size)
  21{
  22        if (!strcmp(name, ""))
  23                return -EINVAL;
  24        return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED, name, buffer, size);
  25}
  26
  27static int jffs2_trusted_setxattr(struct inode *inode, const char *name, const void *buffer,
  28                                  size_t size, int flags)
  29{
  30        if (!strcmp(name, ""))
  31                return -EINVAL;
  32        return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED, name, buffer, size, flags);
  33}
  34
  35static size_t jffs2_trusted_listxattr(struct inode *inode, char *list, size_t list_size,
  36                                      const char *name, size_t name_len)
  37{
  38        size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1;
  39
  40        if (list && retlen<=list_size) {
  41                strcpy(list, XATTR_TRUSTED_PREFIX);
  42                strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name);
  43        }
  44
  45        return retlen;
  46}
  47
  48struct xattr_handler jffs2_trusted_xattr_handler = {
  49        .prefix = XATTR_TRUSTED_PREFIX,
  50        .list = jffs2_trusted_listxattr,
  51        .set = jffs2_trusted_setxattr,
  52        .get = jffs2_trusted_getxattr
  53};
  54