fs/squashfs/xattr.h

   1 /*
   2  * Squashfs - a compressed read only filesystem for Linux
   3  *
   4  * Copyright (c) 2010
   5  * Phillip Lougher <phillip@squashfs.org.uk>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2,
  10  * or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  *
  21  * xattr.h
  22  */
  23
  24 #ifdef CONFIG_SQUASHFS_XATTR
  25 extern __le64 *squashfs_read_xattr_id_table(struct super_block *, u64,
  26                 u64 *, int *);
  27 extern int squashfs_xattr_lookup(struct super_block *, unsigned int, int *,
  28                 unsigned int *, unsigned long long *);
  29 #else
  30 static inline __le64 *squashfs_read_xattr_id_table(struct super_block *sb,
  31                 u64 start, u64 *xattr_table_start, int *xattr_ids)
  32 {
  33         ERROR("Xattrs in filesystem, these will be ignored\n");
  34         *xattr_table_start = start;
  35         return ERR_PTR(-ENOTSUPP);
  36 }
  37
  38 static inline int squashfs_xattr_lookup(struct super_block *sb,
  39                 unsigned int index, int *count, unsigned int *size,
  40                 unsigned long long *xattr)
  41 {
  42         return 0;
  43 }
  44 #define squashfs_listxattr NULL
  45 #define generic_getxattr NULL
  46 #define squashfs_xattr_handlers NULL
  47 #endif