release/src-rt/linux/linux-2.6/scripts/squashfs/squashfs_fs_sb.h

   1 #ifndef SQUASHFS_FS_SB
   2 #define SQUASHFS_FS_SB
   3 /*
   4  * Squashfs
   5  *
   6  * Copyright (c) 2002, 2003, 2004, 2005, 2006
   7  * Phillip Lougher <phillip@lougher.org.uk>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2,
  12  * or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  *
  23  * squashfs_fs_sb.h
  24  */
  25
  26 #include <linux/squashfs_fs.h>
  27
  28 struct squashfs_cache {
  29         long long       block;
  30         int             length;
  31         long long       next_index;
  32         char            *data;
  33 };
  34
  35 struct squashfs_fragment_cache {
  36         long long       block;
  37         int             length;
  38         unsigned int    locked;
  39         char            *data;
  40 };
  41
  42 struct squashfs_sb_info {
  43         struct squashfs_super_block     sblk;
  44         int                     devblksize;
  45         int                     devblksize_log2;
  46         int                     swap;
  47         struct squashfs_cache   *block_cache;
  48         struct squashfs_fragment_cache  *fragment;
  49         int                     next_cache;
  50         int                     next_fragment;
  51         int                     next_meta_index;
  52         unsigned int            *uid;
  53         unsigned int            *guid;
  54         long long               *fragment_index;
  55         unsigned int            *fragment_index_2;
  56         unsigned int            read_size;
  57         char                    *read_data;
  58         char                    *read_page;
  59         struct semaphore        read_data_mutex;
  60         struct semaphore        read_page_mutex;
  61         struct semaphore        block_cache_mutex;
  62         struct semaphore        fragment_mutex;
  63         struct semaphore        meta_index_mutex;
  64         wait_queue_head_t       waitq;
  65         wait_queue_head_t       fragment_wait_queue;
  66         struct meta_index       *meta_index;
  67         struct inode            *(*iget)(struct super_block *s,  squashfs_inode_t \
  68                                 inode);
  69         long long               (*read_blocklist)(struct inode *inode, int \
  70                                 index, int readahead_blks, char *block_list, \
  71                                 unsigned short **block_p, unsigned int *bsize);
  72         int                     (*read_fragment_index_table)(struct super_block *s);
  73 };
  74 #endif