lib/ext2fs/ext2fsP.h

   1 /*
   2  * ext2fsP.h --- private header file for ext2 library
   3  *
   4  * Copyright (C) 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Library
   8  * General Public License, version 2.
   9  * %End-Header%
  10  */
  11
  12 #include "ext2fs.h"
  13
  14 #define EXT2FS_MAX_NESTED_LINKS  8
  15
  16 /*
  17  * Badblocks list
  18  */
  19 struct ext2_struct_u32_list {
  20         int     magic;
  21         int     num;
  22         int     size;
  23         __u32   *list;
  24         int     badblocks_flags;
  25 };
  26
  27 struct ext2_struct_u32_iterate {
  28         int                     magic;
  29         ext2_u32_list           bb;
  30         int                     ptr;
  31 };
  32
  33
  34 /*
  35  * Directory block iterator definition
  36  */
  37 struct ext2_struct_dblist {
  38         int                     magic;
  39         ext2_filsys             fs;
  40         unsigned long long      size;
  41         unsigned long long      count;
  42         int                     sorted;
  43         struct ext2_db_entry2 * list;
  44 };
  45
  46 /*
  47  * For directory iterators
  48  */
  49 struct dir_context {
  50         ext2_ino_t              dir;
  51         int             flags;
  52         char            *buf;
  53         int (*func)(ext2_ino_t  dir,
  54                     int entry,
  55                     struct ext2_dir_entry *dirent,
  56                     int offset,
  57                     int blocksize,
  58                     char        *buf,
  59                     void        *priv_data);
  60         void            *priv_data;
  61         errcode_t       errcode;
  62 };
  63
  64 /*
  65  * Inode cache structure
  66  */
  67 struct ext2_inode_cache {
  68         void *                          buffer;
  69         blk64_t                         buffer_blk;
  70         int                             cache_last;
  71         int                             cache_size;
  72         int                             refcount;
  73         struct ext2_inode_cache_ent     *cache;
  74 };
  75
  76 struct ext2_inode_cache_ent {
  77         ext2_ino_t              ino;
  78         struct ext2_inode       *inode;
  79 };
  80
  81 /* Function prototypes */
  82
  83 extern int ext2fs_process_dir_block(ext2_filsys         fs,
  84                                     blk64_t             *blocknr,
  85                                     e2_blkcnt_t         blockcnt,
  86                                     blk64_t             ref_block,
  87                                     int                 ref_offset,
  88                                     void                *priv_data);
  89
  90 /* Generic numeric progress meter */
  91
  92 struct ext2fs_numeric_progress_struct {
  93         __u64           max;
  94         int             log_max;
  95         int             skip_progress;
  96 };
  97
  98 /*
  99  * progress callback functions
 100  */
 101 struct ext2fs_progress_ops {
 102         void (*init)(ext2_filsys fs,
 103                      struct ext2fs_numeric_progress_struct * progress,
 104                      const char *label, __u64 max);
 105         void (*update)(ext2_filsys fs,
 106                        struct ext2fs_numeric_progress_struct * progress,
 107                        __u64 val);
 108         void (*close)(ext2_filsys fs,
 109                       struct ext2fs_numeric_progress_struct * progress,
 110                       const char *message);
 111 };
 112
 113 extern struct ext2fs_progress_ops ext2fs_numeric_progress_ops;
 114
 115 extern void ext2fs_numeric_progress_init(ext2_filsys fs,
 116                                          struct ext2fs_numeric_progress_struct * progress,
 117                                          const char *label, __u64 max);
 118 extern void ext2fs_numeric_progress_update(ext2_filsys fs,
 119                                            struct ext2fs_numeric_progress_struct * progress,
 120                                            __u64 val);
 121 extern void ext2fs_numeric_progress_close(ext2_filsys fs,
 122                                           struct ext2fs_numeric_progress_struct * progress,
 123                                           const char *message);
 124
 125 /*
 126  * 64-bit bitmap support
 127  */
 128
 129 extern errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
 130                                            int type, __u64 start, __u64 end,
 131                                            __u64 real_end,
 132                                            const char * description,
 133                                            ext2fs_generic_bitmap *bmap);
 134
 135 extern void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
 136
 137 extern errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
 138                                           ext2fs_generic_bitmap *dest);
 139
 140 extern errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
 141                                             __u64 new_end,
 142                                             __u64 new_real_end);
 143 extern errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
 144                                                errcode_t neq,
 145                                                __u64 end, __u64 *oend);
 146 extern int ext2fs_mark_generic_bmap(ext2fs_generic_bitmap bitmap,
 147                                     __u64 arg);
 148 extern int ext2fs_unmark_generic_bmap(ext2fs_generic_bitmap bitmap,
 149                                       __u64 arg);
 150 extern int ext2fs_test_generic_bmap(ext2fs_generic_bitmap bitmap,
 151                                     __u64 arg);
 152 extern errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bitmap,
 153                                                __u64 start, unsigned int num,
 154                                                void *in);
 155 extern errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bitmap,
 156                                                __u64 start, unsigned int num,
 157                                                void *out);
 158 extern void ext2fs_warn_bitmap32(ext2fs_generic_bitmap bitmap,const char *func);
 159
 160 extern int ext2fs_mem_is_zero(const char *mem, size_t len);
 161
 162 int ext2fs_file_block_offset_too_big(ext2_filsys fs,
 163                                      struct ext2_inode *inode,
 164                                      blk64_t offset);