apps/ext2/ext2_cdi.h

   1 /*
   2  * Copyright (c) 2008 The LOST Project. All rights reserved.
   3  *
   4  * This code is derived from software contributed to the LOST Project
   5  * by Antoine Kaufmann.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *     This product includes software developed by the LOST Project
  18  *     and its contributors.
  19  * 4. Neither the name of the LOST Project nor the names of its
  20  *    contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
  27  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  28  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  29  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  30  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #ifndef _EXT2_CDI_H_
  37 #define _EXT2_CDI_H_
  38
  39 #include <stdint.h>
  40
  41 #include "ext2.h"
  42 #include "cdi/fs.h"
  43
  44
  45 /**
  46  * Dateisystemressource fuer ext2
  47  */
  48 struct ext2_fs_res {
  49     struct cdi_fs_res res;
  50
  51     /// Inode
  52     ext2_inode_t* inode;
  53
  54     /// Inode Nummer
  55     uint32_t inode_num;
  56 };
  57
  58
  59 // CDI-IF
  60 int ext2_fs_init(struct cdi_fs_filesystem* fs);
  61 int ext2_fs_destroy(struct cdi_fs_filesystem* fs);
  62
  63 // CDI Res
  64 int     ext2_fs_res_load(struct cdi_fs_stream* stream);
  65 int     ext2_fs_res_unload(struct cdi_fs_stream* stream);
  66 int     ext2_fs_res_remove(struct cdi_fs_stream* stream);
  67 int     ext2_fs_res_rename(struct cdi_fs_stream* stream, const char* name);
  68 int     ext2_fs_res_move(struct cdi_fs_stream* stream, struct cdi_fs_res* dest);
  69 int     ext2_fs_res_assign_class(struct cdi_fs_stream* stream,
  70             cdi_fs_res_class_t class);
  71 int     ext2_fs_res_remove_class(struct cdi_fs_stream* stream,
  72             cdi_fs_res_class_t class);
  73 int64_t ext2_fs_res_meta_read(struct cdi_fs_stream* stream, cdi_fs_meta_t meta);
  74 int     ext2_fs_res_meta_write(struct cdi_fs_stream* stream, cdi_fs_meta_t meta,
  75     int64_t value);
  76
  77 // CDI File
  78 size_t  ext2_fs_file_read(struct cdi_fs_stream* stream, uint64_t start,
  79             size_t size, void* data);
  80 size_t  ext2_fs_file_write(struct cdi_fs_stream* stream, uint64_t start,
  81             size_t size, const void* data);
  82 int     ext2_fs_file_truncate(struct cdi_fs_stream* stream, uint64_t size);
  83
  84 // CDI Dir
  85 cdi_list_t  ext2_fs_dir_list(struct cdi_fs_stream* stream);
  86 int         ext2_fs_dir_create_child(struct cdi_fs_stream* stream,
  87                 const char* name, struct cdi_fs_res* parent);
  88
  89 // CDI Link
  90 const char* ext2_fs_link_read(struct cdi_fs_stream* stream);
  91 int         ext2_fs_link_write(struct cdi_fs_stream* stream, const char* path);
  92
  93 // Cachefunktionen fuer libext2
  94 void* cache_create(struct ext2_fs* fs, size_t block_size);
  95 void cache_destroy(void* handle);
  96 ext2_cache_block_t* cache_block(void* handle, uint64_t block, int noread);
  97 void cache_block_dirty(ext2_cache_block_t* b);
  98 void cache_block_free(ext2_cache_block_t* b, int dirty);
  99
 100
 101 // Pointer auf die ext2-Ressourcen
 102 extern struct cdi_fs_res_res    ext2_fs_res;
 103 extern struct cdi_fs_res_file   ext2_fs_file;
 104 extern struct cdi_fs_res_dir    ext2_fs_dir;
 105 extern struct cdi_fs_res_link   ext2_fs_link;
 106
 107 #endif
 108