LXR linux/fs/squashfs/squashfs_fs

   1#ifndef SQUASHFS_FS_SB
   2#define SQUASHFS_FS_SB
   3/*
   4 * Squashfs
   5 *
   6 * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008
   7 * Phillip Lougher <phillip@lougher.demon.co.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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22 *
  23 * squashfs_fs_sb.h
  24 */
  25
  26#include "squashfs_fs.h"
  27
  28struct squashfs_cache {
  29        char                    *name;
  30        int                     entries;
  31        int                     next_blk;
  32        int                     num_waiters;
  33        int                     unused;
  34        int                     block_size;
  35        int                     pages;
  36        spinlock_t              lock;
  37        wait_queue_head_t       wait_queue;
  38        struct squashfs_cache_entry *entry;
  39};
  40
  41struct squashfs_cache_entry {
  42        u64                     block;
  43        int                     length;
  44        int                     refcount;
  45        u64                     next_index;
  46        int                     pending;
  47        int                     error;
  48        int                     num_waiters;
  49        wait_queue_head_t       wait_queue;
  50        struct squashfs_cache   *cache;
  51        void                    **data;
  52};
  53
  54struct squashfs_sb_info {
  55        int                     devblksize;
  56        int                     devblksize_log2;
  57        struct squashfs_cache   *block_cache;
  58        struct squashfs_cache   *fragment_cache;
  59        struct squashfs_cache   *read_page;
  60        int                     next_meta_index;
  61        __le64                  *id_table;
  62        __le64                  *fragment_index;
  63        unsigned int            *fragment_index_2;
  64        struct mutex            read_data_mutex;
  65        struct mutex            meta_index_mutex;
  66        struct meta_index       *meta_index;
  67        z_stream                stream;
  68        __le64                  *inode_lookup_table;
  69        u64                     inode_table;
  70        u64                     directory_table;
  71        unsigned int            block_size;
  72        unsigned short          block_log;
  73        long long               bytes_used;
  74        unsigned int            inodes;
  75};
  76#endif
  77