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 #if HAVE_SYS_STAT_H 13 #include <sys/stat.h> 14 #endif 15 16 #include "ext2fs.h" 17 18 #define EXT2FS_MAX_NESTED_LINKS 8 19 20 static inline int ext2fsP_is_disk_device(mode_t mode) 21 { 22 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) 23 return S_ISBLK(mode) || S_ISCHR(mode); 24 #else 25 return S_ISBLK(mode); 26 #endif 27 } 28 29 /* 30 * Badblocks list 31 */ 32 struct ext2_struct_u32_list { 33 int magic; 34 int num; 35 int size; 36 __u32 *list; 37 int badblocks_flags; 38 }; 39 40 struct ext2_struct_u32_iterate { 41 int magic; 42 ext2_u32_list bb; 43 int ptr; 44 }; 45 46 47 /* 48 * Directory block iterator definition 49 */ 50 struct ext2_struct_dblist { 51 int magic; 52 ext2_filsys fs; 53 unsigned long long size; 54 unsigned long long count; 55 int sorted; 56 struct ext2_db_entry2 * list; 57 }; 58 59 /* 60 * For directory iterators 61 */ 62 struct dir_context { 63 ext2_ino_t dir; 64 int flags; 65 char *buf; 66 unsigned int buflen; 67 int (*func)(ext2_ino_t dir, 68 int entry, 69 struct ext2_dir_entry *dirent, 70 int offset, 71 int blocksize, 72 char *buf, 73 void *priv_data); 74 void *priv_data; 75 errcode_t errcode; 76 }; 77 78 /* 79 * Inode cache structure 80 */ 81 struct ext2_inode_cache { 82 void * buffer; 83 blk64_t buffer_blk; 84 int cache_last; 85 unsigned int cache_size; 86 int refcount; 87 struct ext2_inode_cache_ent *cache; 88 }; 89 90 struct ext2_inode_cache_ent { 91 ext2_ino_t ino; 92 struct ext2_inode *inode; 93 }; 94 95 /* Function prototypes */ 96 97 extern int ext2fs_process_dir_block(ext2_filsys fs, 98 blk64_t *blocknr, 99 e2_blkcnt_t blockcnt, 100 blk64_t ref_block, 101 int ref_offset, 102 void *priv_data); 103 104 extern errcode_t ext2fs_inline_data_ea_remove(ext2_filsys fs, ext2_ino_t ino); 105 extern errcode_t ext2fs_inline_data_expand(ext2_filsys fs, ext2_ino_t ino); 106 extern int ext2fs_inline_data_dir_iterate(ext2_filsys fs, 107 ext2_ino_t ino, 108 void *priv_data); 109 110 /* Generic numeric progress meter */ 111 112 struct ext2fs_numeric_progress_struct { 113 __u64 max; 114 int log_max; 115 int skip_progress; 116 }; 117 118 /* 119 * progress callback functions 120 */ 121 struct ext2fs_progress_ops { 122 void (*init)(ext2_filsys fs, 123 struct ext2fs_numeric_progress_struct * progress, 124 const char *label, __u64 max); 125 void (*update)(ext2_filsys fs, 126 struct ext2fs_numeric_progress_struct * progress, 127 __u64 val); 128 void (*close)(ext2_filsys fs, 129 struct ext2fs_numeric_progress_struct * progress, 130 const char *message); 131 }; 132 133 extern struct ext2fs_progress_ops ext2fs_numeric_progress_ops; 134 135 extern void ext2fs_numeric_progress_init(ext2_filsys fs, 136 struct ext2fs_numeric_progress_struct * progress, 137 const char *label, __u64 max); 138 extern void ext2fs_numeric_progress_update(ext2_filsys fs, 139 struct ext2fs_numeric_progress_struct * progress, 140 __u64 val); 141 extern void ext2fs_numeric_progress_close(ext2_filsys fs, 142 struct ext2fs_numeric_progress_struct * progress, 143 const char *message); 144 145 /* 146 * 64-bit bitmap support 147 */ 148 149 extern errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic, 150 int type, __u64 start, __u64 end, 151 __u64 real_end, 152 const char * description, 153 ext2fs_generic_bitmap *bmap); 154 155 extern void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap); 156 157 extern errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src, 158 ext2fs_generic_bitmap *dest); 159 160 extern errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap, 161 __u64 new_end, 162 __u64 new_real_end); 163 extern errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap, 164 errcode_t neq, 165 __u64 end, __u64 *oend); 166 extern int ext2fs_mark_generic_bmap(ext2fs_generic_bitmap bitmap, 167 __u64 arg); 168 extern int ext2fs_unmark_generic_bmap(ext2fs_generic_bitmap bitmap, 169 __u64 arg); 170 extern int ext2fs_test_generic_bmap(ext2fs_generic_bitmap bitmap, 171 __u64 arg); 172 extern errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bitmap, 173 __u64 start, unsigned int num, 174 void *in); 175 extern errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bitmap, 176 __u64 start, unsigned int num, 177 void *out); 178 extern void ext2fs_warn_bitmap32(ext2fs_generic_bitmap bitmap,const char *func); 179 180 extern int ext2fs_mem_is_zero(const char *mem, size_t len); 181 182 extern int ext2fs_file_block_offset_too_big(ext2_filsys fs, 183 struct ext2_inode *inode, 184 blk64_t offset); 185 186 /* atexit support */ 187 typedef void (*ext2_exit_fn)(void *); 188 errcode_t ext2fs_add_exit_fn(ext2_exit_fn fn, void *data); 189 errcode_t ext2fs_remove_exit_fn(ext2_exit_fn fn, void *data); 190 191 #define EXT2FS_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2*!!(cond)])) 192
