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(const struct xattr_handler *handler,
  20                                  struct dentry *unused, struct inode *inode,
  21                                  const char *name, void *buffer, size_t size)
  22{
  23        return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED,
  24                                 name, buffer, size);
  25}
  26
  27static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
  28                                  struct user_namespace *mnt_userns,
  29                                  struct dentry *unused, struct inode *inode,
  30                                  const char *name, const void *buffer,
  31                                  size_t size, int flags)
  32{
  33        return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED,
  34                                 name, buffer, size, flags);
  35}
  36
  37static bool jffs2_trusted_listxattr(struct dentry *dentry)
  38{
  39        return capable(CAP_SYS_ADMIN);
  40}
  41
  42const struct xattr_handler jffs2_trusted_xattr_handler = {
  43        .prefix = XATTR_TRUSTED_PREFIX,
  44        .list = jffs2_trusted_listxattr,
  45        .set = jffs2_trusted_setxattr,
  46        .get = jffs2_trusted_getxattr
  47};
  48