fs/ext4/xattr_hurd.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/fs/ext4/xattr_hurd.c
   4  * Handler for extended gnu attributes for the Hurd.
   5  *
   6  * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
   7  * Copyright (C) 2020 by Jan (janneke) Nieuwenhuizen, <janneke@gnu.org>
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/string.h>
  12 #include "ext4.h"
  13 #include "xattr.h"
  14
  15 static bool
  16 ext4_xattr_hurd_list(struct dentry *dentry)
  17 {
  18         return test_opt(dentry->d_sb, XATTR_USER);
  19 }
  20
  21 static int
  22 ext4_xattr_hurd_get(const struct xattr_handler *handler,
  23                     struct dentry *unused, struct inode *inode,
  24                     const char *name, void *buffer, size_t size)
  25 {
  26         if (!test_opt(inode->i_sb, XATTR_USER))
  27                 return -EOPNOTSUPP;
  28
  29         return ext4_xattr_get(inode, EXT4_XATTR_INDEX_HURD,
  30                               name, buffer, size);
  31 }
  32
  33 static int
  34 ext4_xattr_hurd_set(const struct xattr_handler *handler,
  35                     struct mnt_idmap *idmap,
  36                     struct dentry *unused, struct inode *inode,
  37                     const char *name, const void *value,
  38                     size_t size, int flags)
  39 {
  40         if (!test_opt(inode->i_sb, XATTR_USER))
  41                 return -EOPNOTSUPP;
  42
  43         return ext4_xattr_set(inode, EXT4_XATTR_INDEX_HURD,
  44                               name, value, size, flags);
  45 }
  46
  47 const struct xattr_handler ext4_xattr_hurd_handler = {
  48         .prefix = XATTR_HURD_PREFIX,
  49         .list   = ext4_xattr_hurd_list,
  50         .get    = ext4_xattr_hurd_get,
  51         .set    = ext4_xattr_hurd_set,
  52 };