fs/squashfs/xattr.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Squashfs - a compressed read only filesystem for Linux
   4  *
   5  * Copyright (c) 2010
   6  * Phillip Lougher <phillip@squashfs.org.uk>
   7  *
   8  * xattr.h
   9  */
  10
  11 #ifdef CONFIG_SQUASHFS_XATTR
  12 extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64,
  13                 u64 *, unsigned int *);
  14 extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
  15                 unsigned int *, unsigned long long *);
  16 #else
  17 static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb,
  18                 u64 start, u64 *xattr_table_start, unsigned int *xattr_ids)
  19 {
  20         struct squashfs_xattr_id_table *id_table;
  21
  22         id_table = squashfs_read_table(sb, start, sizeof(*id_table));
  23         if (IS_ERR(id_table))
  24                 return (__le64 *) id_table;
  25
  26         *xattr_table_start = le64_to_cpu(id_table->xattr_table_start);
  27         kfree(id_table);
  28
  29         ERROR("Xattrs in filesystem, these will be ignored\n");
  30         return ERR_PTR(-ENOTSUPP);
  31 }
  32
  33 static inline int squashfs_xattr_lookup(struct super_block *sb,
  34                 unsigned int index, int *count, unsigned int *size,
  35                 unsigned long long *xattr)
  36 {
  37         return 0;
  38 }
  39 #define squashfs_listxattr NULL
  40 #define squashfs_xattr_handlers NULL
  41 #endif