fs/ext2/xattr_trusted.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/fs/ext2/xattr_trusted.c
   4  * Handler for trusted extended attributes.
   5  *
   6  * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
   7  */
   8
   9 #include "ext2.h"
  10 #include "xattr.h"
  11
  12 static bool
  13 ext2_xattr_trusted_list(struct dentry *dentry)
  14 {
  15         return capable(CAP_SYS_ADMIN);
  16 }
  17
  18 static int
  19 ext2_xattr_trusted_get(const struct xattr_handler *handler,
  20                        struct dentry *unused, struct inode *inode,
  21                        const char *name, void *buffer, size_t size)
  22 {
  23         return ext2_xattr_get(inode, EXT2_XATTR_INDEX_TRUSTED, name,
  24                               buffer, size);
  25 }
  26
  27 static int
  28 ext2_xattr_trusted_set(const struct xattr_handler *handler,
  29                        struct mnt_idmap *idmap,
  30                        struct dentry *unused, struct inode *inode,
  31                        const char *name, const void *value,
  32                        size_t size, int flags)
  33 {
  34         return ext2_xattr_set(inode, EXT2_XATTR_INDEX_TRUSTED, name,
  35                               value, size, flags);
  36 }
  37
  38 const struct xattr_handler ext2_xattr_trusted_handler = {
  39         .prefix = XATTR_TRUSTED_PREFIX,
  40         .list   = ext2_xattr_trusted_list,
  41         .get    = ext2_xattr_trusted_get,
  42         .set    = ext2_xattr_trusted_set,
  43 };