LXR linux/fs/ext4/xattr

   1/*
   2 * linux/fs/ext4/xattr_trusted.c
   3 * Handler for trusted extended attributes.
   4 *
   5 * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
   6 */
   7
   8#include <linux/string.h>
   9#include <linux/capability.h>
  10#include <linux/fs.h>
  11#include "ext4_jbd2.h"
  12#include "ext4.h"
  13#include "xattr.h"
  14
  15static bool
  16ext4_xattr_trusted_list(struct dentry *dentry)
  17{
  18        return capable(CAP_SYS_ADMIN);
  19}
  20
  21static int
  22ext4_xattr_trusted_get(const struct xattr_handler *handler,
  23                       struct dentry *dentry, const char *name, void *buffer,
  24                       size_t size)
  25{
  26        return ext4_xattr_get(d_inode(dentry), EXT4_XATTR_INDEX_TRUSTED,
  27                              name, buffer, size);
  28}
  29
  30static int
  31ext4_xattr_trusted_set(const struct xattr_handler *handler,
  32                       struct dentry *dentry, const char *name,
  33                       const void *value, size_t size, int flags)
  34{
  35        return ext4_xattr_set(d_inode(dentry), EXT4_XATTR_INDEX_TRUSTED,
  36                              name, value, size, flags);
  37}
  38
  39const struct xattr_handler ext4_xattr_trusted_handler = {
  40        .prefix = XATTR_TRUSTED_PREFIX,
  41        .list   = ext4_xattr_trusted_list,
  42        .get    = ext4_xattr_trusted_get,
  43        .set    = ext4_xattr_trusted_set,
  44};
  45