ext2fs.h revision 5df55d7f847e29d23227592a0bb23daad1a61500
15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * ext2fs.h --- ext2fs 353e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * %Begin-Header% 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * This file may be redistributed under the terms of the GNU Public 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * License. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * %End-Header% 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef _EXT2FS_EXT2FS_H 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define _EXT2FS_EXT2FS_H 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifdef __cplusplus 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)extern "C" { 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Non-GNU C compilers won't necessarily understand inline 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if (!defined(__GNUC__) && !defined(__WATCOMC__)) 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define NO_INLINE_FUNCS 2402772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch#endif 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Build in support for byte-swapping filesystems if we the feature 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * has been configured or if we're being built on a CPU architecture 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * with a non-native byte order. 301e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) */ 316f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch#if defined(ENABLE_SWAPFS) || defined(WORDS_BIGENDIAN) 321e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#define EXT2FS_ENABLE_SWAPFS 338abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles)#endif 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 3607a852d8c1953036774d8f3b65d18dcfea3bb4a2Ben Murdoch * Where the master copy of the superblock is located, and how big 3707a852d8c1953036774d8f3b65d18dcfea3bb4a2Ben Murdoch * superblocks are supposed to be. We define SUPERBLOCK_SIZE because 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * the size of the superblock structure is not necessarily trustworthy 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (some versions have the padding set up so that the superblock is 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1032 bytes long). 41c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) */ 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define SUPERBLOCK_OFFSET 1024 4351b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles)#define SUPERBLOCK_SIZE 1024 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * The last ext2fs revision level that this version of the library is 4702772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * able to support. 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_LIB_CURRENT_REV EXT2_DYNAMIC_REV 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifdef HAVE_SYS_TYPES_H 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <sys/types.h> 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <stdlib.h> 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if EXT2_FLAT_INCLUDES 5802772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch#include "e2_types.h" 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#else 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <ext2fs/ext2_types.h> 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif /* EXT2_FLAT_INCLUDES */ 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef __u32 ext2_ino_t; 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef __u32 blk_t; 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef __u32 dgrp_t; 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef __u32 ext2_off_t; 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef __s64 e2_blkcnt_t; 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#if EXT2_FLAT_INCLUDES 7002772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch#include "com_err.h" 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "ext2_io.h" 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "ext2_err.h" 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#else 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <et/com_err.h> 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <ext2fs/ext2_io.h> 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include <ext2fs/ext2_err.h> 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Portability help for Microsoft Visual C++ 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifdef _MSC_VER 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_QSORT_TYPE int __cdecl 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#else 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_QSORT_TYPE int 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct struct_ext2_filsys *ext2_filsys; 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)struct ext2fs_struct_generic_bitmap { 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) errcode_t magic; 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ext2_filsys fs; 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) __u32 start, end; 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) __u32 real_end; 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) char * description; 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) char * bitmap; 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) errcode_t base_error_code; 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) __u32 reserved[7]; 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1016f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch#define EXT2FS_MARK_ERROR 0 1026f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch#define EXT2FS_UNMARK_ERROR 1 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2FS_TEST_ERROR 2 1046f543c786fc42989f552b4daa774ca5ff32fa697Ben Murdoch 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2fs_struct_generic_bitmap *ext2fs_generic_bitmap; 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2fs_struct_generic_bitmap *ext2fs_inode_bitmap; 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2fs_struct_generic_bitmap *ext2fs_block_bitmap; 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifdef EXT2_DYNAMIC_REV 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO(s) 1115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#else 1125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FIRST_INODE(s) EXT2_FIRST_INO 1135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 1145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 1155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 1178abfc5808a4e34d6e03867af8bc440dee641886fTorne (Richard Coles) * badblocks list definitions 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2_struct_badblocks_list *ext2_badblocks_list; 12107a852d8c1953036774d8f3b65d18dcfea3bb4a2Ben Murdochtypedef struct ext2_struct_badblocks_iterate *ext2_badblocks_iterate; 1225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* old */ 1245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2_struct_badblocks_list *badblocks_list; 1255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2_struct_badblocks_iterate *badblocks_iterate; 1265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define BADBLOCKS_FLAG_DIRTY 1 1285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 1305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * ext2_dblist structure and abstractions (see dblist.c) 1315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 1325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)struct ext2_db_entry { 1335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ext2_ino_t ino; 1345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) blk_t blk; 1355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) int blockcnt; 1365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 1375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2_struct_dblist *ext2_dblist; 1395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define DBLIST_ABORT 1 1415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 1435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * ext2_fileio definitions 1445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 1455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FILE_WRITE 0x0001 1475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FILE_CREATE 0x0002 1485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FILE_MASK 0x00FF 1505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FILE_BUF_DIRTY 0x4000 1525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FILE_BUF_VALID 0x2000 1535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef struct ext2_file *ext2_file_t; 1555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_SEEK_SET 0 1575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_SEEK_CUR 1 1585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_SEEK_END 2 1595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 1615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Flags for the ext2_filsys structure and for ext2fs_open() 1625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 1635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_RW 0x01 1645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_CHANGED 0x02 1655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_DIRTY 0x04 1665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_VALID 0x08 1675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_IB_DIRTY 0x10 1685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_BB_DIRTY 0x20 1695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_SWAP_BYTES 0x40 170c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)#define EXT2_FLAG_SWAP_BYTES_READ 0x80 1715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_SWAP_BYTES_WRITE 0x100 1725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define EXT2_FLAG_MASTER_SB_ONLY 0x200 173#define EXT2_FLAG_FORCE 0x400 174#define EXT2_FLAG_SUPER_ONLY 0x800 175#define EXT2_FLAG_JOURNAL_DEV_OK 0x1000 176#define EXT2_FLAG_IMAGE_FILE 0x2000 177 178/* 179 * Special flag in the ext2 inode i_flag field that means that this is 180 * a new inode. (So that ext2_write_inode() can clear extra fields.) 181 */ 182#define EXT2_NEW_INODE_FL 0x80000000 183 184/* 185 * Flags for mkjournal 186 * 187 * EXT2_MKJOURNAL_V1_SUPER Make a (deprecated) V1 journal superblock 188 */ 189#define EXT2_MKJOURNAL_V1_SUPER 0x0000001 190 191struct struct_ext2_filsys { 192 errcode_t magic; 193 io_channel io; 194 int flags; 195 char * device_name; 196 struct ext2_super_block * super; 197 int blocksize; 198 int fragsize; 199 dgrp_t group_desc_count; 200 unsigned long desc_blocks; 201 struct ext2_group_desc * group_desc; 202 int inode_blocks_per_group; 203 ext2fs_inode_bitmap inode_map; 204 ext2fs_block_bitmap block_map; 205 errcode_t (*get_blocks)(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 206 errcode_t (*check_directory)(ext2_filsys fs, ext2_ino_t ino); 207 errcode_t (*write_bitmaps)(ext2_filsys fs); 208 errcode_t (*read_inode)(ext2_filsys fs, ext2_ino_t ino, 209 struct ext2_inode *inode); 210 errcode_t (*write_inode)(ext2_filsys fs, ext2_ino_t ino, 211 struct ext2_inode *inode); 212 badblocks_list badblocks; 213 ext2_dblist dblist; 214 __u32 stride; /* for mke2fs */ 215 struct ext2_super_block * orig_super; 216 struct ext2_image_hdr * image_header; 217 /* 218 * Reserved for future expansion 219 */ 220 __u32 reserved[9]; 221 222 /* 223 * Reserved for the use of the calling application. 224 */ 225 void * priv_data; 226 227 /* 228 * Inode cache 229 */ 230 struct ext2_inode_cache *icache; 231}; 232 233#if EXT2_FLAT_INCLUDES 234#include "e2_bitops.h" 235#else 236#include <ext2fs/bitops.h> 237#endif 238 239/* 240 * Return flags for the block iterator functions 241 */ 242#define BLOCK_CHANGED 1 243#define BLOCK_ABORT 2 244#define BLOCK_ERROR 4 245 246/* 247 * Block interate flags 248 * 249 * BLOCK_FLAG_APPEND, or BLOCK_FLAG_HOLE, indicates that the interator 250 * function should be called on blocks where the block number is zero. 251 * This is used by ext2fs_expand_dir() to be able to add a new block 252 * to an inode. It can also be used for programs that want to be able 253 * to deal with files that contain "holes". 254 * 255 * BLOCK_FLAG_TRAVERSE indicates that the iterator function for the 256 * indirect, doubly indirect, etc. blocks should be called after all 257 * of the blocks containined in the indirect blocks are processed. 258 * This is useful if you are going to be deallocating blocks from an 259 * inode. 260 * 261 * BLOCK_FLAG_DATA_ONLY indicates that the iterator function should be 262 * called for data blocks only. 263 * 264 * BLOCK_FLAG_NO_LARGE is for internal use only. It informs 265 * ext2fs_block_iterate2 that large files won't be accepted. 266 */ 267#define BLOCK_FLAG_APPEND 1 268#define BLOCK_FLAG_HOLE 1 269#define BLOCK_FLAG_DEPTH_TRAVERSE 2 270#define BLOCK_FLAG_DATA_ONLY 4 271 272#define BLOCK_FLAG_NO_LARGE 0x1000 273 274/* 275 * Magic "block count" return values for the block iterator function. 276 */ 277#define BLOCK_COUNT_IND (-1) 278#define BLOCK_COUNT_DIND (-2) 279#define BLOCK_COUNT_TIND (-3) 280#define BLOCK_COUNT_TRANSLATOR (-4) 281 282#if 0 283/* 284 * Flags for ext2fs_move_blocks 285 */ 286#define EXT2_BMOVE_GET_DBLIST 0x0001 287#define EXT2_BMOVE_DEBUG 0x0002 288#endif 289 290/* 291 * Return flags for the directory iterator functions 292 */ 293#define DIRENT_CHANGED 1 294#define DIRENT_ABORT 2 295#define DIRENT_ERROR 3 296 297/* 298 * Directory iterator flags 299 */ 300 301#define DIRENT_FLAG_INCLUDE_EMPTY 1 302 303 304#define DIRENT_DOT_FILE 1 305#define DIRENT_DOT_DOT_FILE 2 306#define DIRENT_OTHER_FILE 3 307 308/* 309 * Inode scan definitions 310 */ 311typedef struct ext2_struct_inode_scan *ext2_inode_scan; 312 313/* 314 * ext2fs_scan flags 315 */ 316#define EXT2_SF_CHK_BADBLOCKS 0x0001 317#define EXT2_SF_BAD_INODE_BLK 0x0002 318#define EXT2_SF_BAD_EXTRA_BYTES 0x0004 319#define EXT2_SF_SKIP_MISSING_ITABLE 0x0008 320 321/* 322 * ext2fs_check_if_mounted flags 323 */ 324#define EXT2_MF_MOUNTED 1 325#define EXT2_MF_ISROOT 2 326#define EXT2_MF_READONLY 4 327 328/* 329 * Ext2/linux mode flags. We define them here so that we don't need 330 * to depend on the OS's sys/stat.h, since we may be compiling on a 331 * non-Linux system. 332 */ 333#define LINUX_S_IFMT 00170000 334#define LINUX_S_IFSOCK 0140000 335#define LINUX_S_IFLNK 0120000 336#define LINUX_S_IFREG 0100000 337#define LINUX_S_IFBLK 0060000 338#define LINUX_S_IFDIR 0040000 339#define LINUX_S_IFCHR 0020000 340#define LINUX_S_IFIFO 0010000 341#define LINUX_S_ISUID 0004000 342#define LINUX_S_ISGID 0002000 343#define LINUX_S_ISVTX 0001000 344 345#define LINUX_S_IRWXU 00700 346#define LINUX_S_IRUSR 00400 347#define LINUX_S_IWUSR 00200 348#define LINUX_S_IXUSR 00100 349 350#define LINUX_S_IRWXG 00070 351#define LINUX_S_IRGRP 00040 352#define LINUX_S_IWGRP 00020 353#define LINUX_S_IXGRP 00010 354 355#define LINUX_S_IRWXO 00007 356#define LINUX_S_IROTH 00004 357#define LINUX_S_IWOTH 00002 358#define LINUX_S_IXOTH 00001 359 360#define LINUX_S_ISLNK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFLNK) 361#define LINUX_S_ISREG(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFREG) 362#define LINUX_S_ISDIR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFDIR) 363#define LINUX_S_ISCHR(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFCHR) 364#define LINUX_S_ISBLK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFBLK) 365#define LINUX_S_ISFIFO(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFIFO) 366#define LINUX_S_ISSOCK(m) (((m) & LINUX_S_IFMT) == LINUX_S_IFSOCK) 367 368/* 369 * ext2_icount_t abstraction 370 */ 371#define EXT2_ICOUNT_OPT_INCREMENT 0x01 372 373typedef struct ext2_icount *ext2_icount_t; 374 375/* 376 * Flags for ext2fs_bmap 377 */ 378#define BMAP_ALLOC 1 379 380/* 381 * Flags for imager.c functions 382 */ 383#define IMAGER_FLAG_INODEMAP 1 384#define IMAGER_FLAG_SPARSEWRITE 2 385 386/* 387 * For checking structure magic numbers... 388 */ 389 390#define EXT2_CHECK_MAGIC(struct, code) \ 391 if ((struct)->magic != (code)) return (code) 392 393 394/* 395 * For ext2 compression support 396 */ 397#define EXT2FS_COMPRESSED_BLKADDR ((blk_t) 0xffffffff) 398#define HOLE_BLKADDR(_b) ((_b) == 0 || (_b) == EXT2FS_COMPRESSED_BLKADDR) 399 400/* 401 * Features supported by this version of the library 402 */ 403#define EXT2_LIB_FEATURE_COMPAT_SUPP (EXT2_FEATURE_COMPAT_DIR_PREALLOC|\ 404 EXT2_FEATURE_COMPAT_IMAGIC_INODES|\ 405 EXT3_FEATURE_COMPAT_HAS_JOURNAL) 406 407/* This #ifdef is temporary until compression is fully supported */ 408#ifdef ENABLE_COMPRESSION 409#ifndef I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL 410/* If the below warning bugs you, then have 411 `CPPFLAGS=-DI_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL' in your 412 environment at configure time. */ 413 #warning "Compression support is experimental" 414#endif 415#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 416 EXT2_FEATURE_INCOMPAT_COMPRESSION|\ 417 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 418 EXT3_FEATURE_INCOMPAT_RECOVER) 419#else 420#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ 421 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ 422 EXT3_FEATURE_INCOMPAT_RECOVER) 423#endif 424#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ 425 EXT2_FEATURE_RO_COMPAT_LARGE_FILE) 426/* 427 * function prototypes 428 */ 429 430/* alloc.c */ 431extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, 432 ext2fs_inode_bitmap map, ext2_ino_t *ret); 433extern errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, 434 ext2fs_block_bitmap map, blk_t *ret); 435extern errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, 436 blk_t finish, int num, 437 ext2fs_block_bitmap map, 438 blk_t *ret); 439extern errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, 440 char *block_buf, blk_t *ret); 441 442/* alloc_tables.c */ 443extern errcode_t ext2fs_allocate_tables(ext2_filsys fs); 444extern errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group, 445 ext2fs_block_bitmap bmap); 446 447/* badblocks.c */ 448extern errcode_t ext2fs_badblocks_list_create(ext2_badblocks_list *ret, 449 int size); 450extern errcode_t ext2fs_badblocks_list_add(ext2_badblocks_list bb, 451 blk_t blk); 452extern int ext2fs_badblocks_list_test(ext2_badblocks_list bb, 453 blk_t blk); 454extern errcode_t 455 ext2fs_badblocks_list_iterate_begin(ext2_badblocks_list bb, 456 ext2_badblocks_iterate *ret); 457extern int ext2fs_badblocks_list_iterate(ext2_badblocks_iterate iter, 458 blk_t *blk); 459extern void ext2fs_badblocks_list_iterate_end(ext2_badblocks_iterate iter); 460extern errcode_t ext2fs_badblocks_copy(ext2_badblocks_list src, 461 ext2_badblocks_list *dest); 462extern int ext2fs_badblocks_equal(ext2_badblocks_list bb1, 463 ext2_badblocks_list bb2); 464 465/* bb_compat */ 466extern errcode_t badblocks_list_create(badblocks_list *ret, int size); 467extern errcode_t badblocks_list_add(badblocks_list bb, blk_t blk); 468extern int badblocks_list_test(badblocks_list bb, blk_t blk); 469extern errcode_t badblocks_list_iterate_begin(badblocks_list bb, 470 badblocks_iterate *ret); 471extern int badblocks_list_iterate(badblocks_iterate iter, blk_t *blk); 472extern void badblocks_list_iterate_end(badblocks_iterate iter); 473extern void badblocks_list_free(badblocks_list bb); 474 475/* bb_inode.c */ 476extern errcode_t ext2fs_update_bb_inode(ext2_filsys fs, 477 ext2_badblocks_list bb_list); 478 479/* bitmaps.c */ 480extern errcode_t ext2fs_write_inode_bitmap(ext2_filsys fs); 481extern errcode_t ext2fs_write_block_bitmap (ext2_filsys fs); 482extern errcode_t ext2fs_read_inode_bitmap (ext2_filsys fs); 483extern errcode_t ext2fs_read_block_bitmap(ext2_filsys fs); 484extern errcode_t ext2fs_allocate_generic_bitmap(__u32 start, 485 __u32 end, 486 __u32 real_end, 487 const char *descr, 488 ext2fs_generic_bitmap *ret); 489extern errcode_t ext2fs_allocate_block_bitmap(ext2_filsys fs, 490 const char *descr, 491 ext2fs_block_bitmap *ret); 492extern errcode_t ext2fs_allocate_inode_bitmap(ext2_filsys fs, 493 const char *descr, 494 ext2fs_inode_bitmap *ret); 495extern errcode_t ext2fs_fudge_inode_bitmap_end(ext2fs_inode_bitmap bitmap, 496 ext2_ino_t end, ext2_ino_t *oend); 497extern errcode_t ext2fs_fudge_block_bitmap_end(ext2fs_block_bitmap bitmap, 498 blk_t end, blk_t *oend); 499extern void ext2fs_clear_inode_bitmap(ext2fs_inode_bitmap bitmap); 500extern void ext2fs_clear_block_bitmap(ext2fs_block_bitmap bitmap); 501extern errcode_t ext2fs_read_bitmaps(ext2_filsys fs); 502extern errcode_t ext2fs_write_bitmaps(ext2_filsys fs); 503 504/* block.c */ 505extern errcode_t ext2fs_block_iterate(ext2_filsys fs, 506 ext2_ino_t ino, 507 int flags, 508 char *block_buf, 509 int (*func)(ext2_filsys fs, 510 blk_t *blocknr, 511 int blockcnt, 512 void *priv_data), 513 void *priv_data); 514errcode_t ext2fs_block_iterate2(ext2_filsys fs, 515 ext2_ino_t ino, 516 int flags, 517 char *block_buf, 518 int (*func)(ext2_filsys fs, 519 blk_t *blocknr, 520 e2_blkcnt_t blockcnt, 521 blk_t ref_blk, 522 int ref_offset, 523 void *priv_data), 524 void *priv_data); 525 526/* bmap.c */ 527extern errcode_t ext2fs_bmap(ext2_filsys fs, ext2_ino_t ino, 528 struct ext2_inode *inode, 529 char *block_buf, int bmap_flags, 530 blk_t block, blk_t *phys_blk); 531 532 533#if 0 534/* bmove.c */ 535extern errcode_t ext2fs_move_blocks(ext2_filsys fs, 536 ext2fs_block_bitmap reserve, 537 ext2fs_block_bitmap alloc_map, 538 int flags); 539#endif 540 541/* check_desc.c */ 542extern errcode_t ext2fs_check_desc(ext2_filsys fs); 543 544/* closefs.c */ 545extern errcode_t ext2fs_close(ext2_filsys fs); 546extern errcode_t ext2fs_flush(ext2_filsys fs); 547extern int ext2fs_bg_has_super(ext2_filsys fs, int group_block); 548extern void ext2fs_update_dynamic_rev(ext2_filsys fs); 549 550/* cmp_bitmaps.c */ 551extern errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1, 552 ext2fs_block_bitmap bm2); 553extern errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1, 554 ext2fs_inode_bitmap bm2); 555 556/* dblist.c */ 557 558extern errcode_t ext2fs_get_num_dirs(ext2_filsys fs, ext2_ino_t *ret_num_dirs); 559extern errcode_t ext2fs_init_dblist(ext2_filsys fs, ext2_dblist *ret_dblist); 560extern errcode_t ext2fs_add_dir_block(ext2_dblist dblist, ext2_ino_t ino, 561 blk_t blk, int blockcnt); 562extern errcode_t ext2fs_dblist_iterate(ext2_dblist dblist, 563 int (*func)(ext2_filsys fs, struct ext2_db_entry *db_info, 564 void *priv_data), 565 void *priv_data); 566extern errcode_t ext2fs_set_dir_block(ext2_dblist dblist, ext2_ino_t ino, 567 blk_t blk, int blockcnt); 568extern errcode_t ext2fs_copy_dblist(ext2_dblist src, 569 ext2_dblist *dest); 570extern int ext2fs_dblist_count(ext2_dblist dblist); 571 572/* dblist_dir.c */ 573extern errcode_t 574 ext2fs_dblist_dir_iterate(ext2_dblist dblist, 575 int flags, 576 char *block_buf, 577 int (*func)(ext2_ino_t dir, 578 int entry, 579 struct ext2_dir_entry *dirent, 580 int offset, 581 int blocksize, 582 char *buf, 583 void *priv_data), 584 void *priv_data); 585 586/* dirblock.c */ 587extern errcode_t ext2fs_read_dir_block(ext2_filsys fs, blk_t block, 588 void *buf); 589extern errcode_t ext2fs_write_dir_block(ext2_filsys fs, blk_t block, 590 void *buf); 591 592/* dir_iterate.c */ 593extern errcode_t ext2fs_dir_iterate(ext2_filsys fs, 594 ext2_ino_t dir, 595 int flags, 596 char *block_buf, 597 int (*func)(struct ext2_dir_entry *dirent, 598 int offset, 599 int blocksize, 600 char *buf, 601 void *priv_data), 602 void *priv_data); 603 604/* dupfs.c */ 605extern errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest); 606 607/* expanddir.c */ 608extern errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir); 609 610/* fileio.c */ 611extern errcode_t ext2fs_file_open(ext2_filsys fs, ext2_ino_t ino, 612 int flags, ext2_file_t *ret); 613extern ext2_filsys ext2fs_file_get_fs(ext2_file_t file); 614extern errcode_t ext2fs_file_close(ext2_file_t file); 615extern errcode_t ext2fs_file_read(ext2_file_t file, void *buf, 616 unsigned int wanted, unsigned int *got); 617extern errcode_t ext2fs_file_write(ext2_file_t file, void *buf, 618 unsigned int nbytes, unsigned int *written); 619extern errcode_t ext2fs_file_lseek(ext2_file_t file, ext2_off_t offset, 620 int whence, ext2_off_t *ret_pos); 621extern ext2_off_t ext2fs_file_get_size(ext2_file_t file); 622extern errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size); 623 624/* finddev.c */ 625extern char *ext2fs_find_block_device(dev_t device); 626 627/* flushb.c */ 628extern errcode_t ext2fs_sync_device(int fd, int flushb); 629 630/* freefs.c */ 631extern void ext2fs_free(ext2_filsys fs); 632extern void ext2fs_free_generic_bitmap(ext2fs_inode_bitmap bitmap); 633extern void ext2fs_free_block_bitmap(ext2fs_block_bitmap bitmap); 634extern void ext2fs_free_inode_bitmap(ext2fs_inode_bitmap bitmap); 635extern void ext2fs_free_dblist(ext2_dblist dblist); 636extern void ext2fs_badblocks_list_free(badblocks_list bb); 637 638/* getsize.c */ 639extern errcode_t ext2fs_get_device_size(const char *file, int blocksize, 640 blk_t *retblocks); 641 642/* imager.c */ 643extern errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags); 644extern errcode_t ext2fs_image_inode_read(ext2_filsys fs, int fd, int flags); 645extern errcode_t ext2fs_image_super_write(ext2_filsys fs, int fd, int flags); 646extern errcode_t ext2fs_image_super_read(ext2_filsys fs, int fd, int flags); 647extern errcode_t ext2fs_image_bitmap_write(ext2_filsys fs, int fd, int flags); 648extern errcode_t ext2fs_image_bitmap_read(ext2_filsys fs, int fd, int flags); 649 650/* initialize.c */ 651extern errcode_t ext2fs_initialize(const char *name, int flags, 652 struct ext2_super_block *param, 653 io_manager manager, ext2_filsys *ret_fs); 654 655/* inode.c */ 656extern errcode_t ext2fs_flush_icache(ext2_filsys fs); 657extern errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, 658 ext2_inode_scan *ret_scan); 659extern void ext2fs_close_inode_scan(ext2_inode_scan scan); 660extern errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino, 661 struct ext2_inode *inode); 662extern errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan, 663 int group); 664extern void ext2fs_set_inode_callback 665 (ext2_inode_scan scan, 666 errcode_t (*done_group)(ext2_filsys fs, 667 ext2_inode_scan scan, 668 dgrp_t group, 669 void * priv_data), 670 void *done_group_data); 671extern int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags, 672 int clear_flags); 673extern errcode_t ext2fs_read_inode (ext2_filsys fs, ext2_ino_t ino, 674 struct ext2_inode * inode); 675extern errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino, 676 struct ext2_inode * inode); 677extern errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks); 678extern errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino); 679 680/* icount.c */ 681extern void ext2fs_free_icount(ext2_icount_t icount); 682extern errcode_t ext2fs_create_icount2(ext2_filsys fs, int flags, int size, 683 ext2_icount_t hint, ext2_icount_t *ret); 684extern errcode_t ext2fs_create_icount(ext2_filsys fs, int flags, int size, 685 ext2_icount_t *ret); 686extern errcode_t ext2fs_icount_fetch(ext2_icount_t icount, ext2_ino_t ino, 687 __u16 *ret); 688extern errcode_t ext2fs_icount_increment(ext2_icount_t icount, ext2_ino_t ino, 689 __u16 *ret); 690extern errcode_t ext2fs_icount_decrement(ext2_icount_t icount, ext2_ino_t ino, 691 __u16 *ret); 692extern errcode_t ext2fs_icount_store(ext2_icount_t icount, ext2_ino_t ino, 693 __u16 count); 694extern ext2_ino_t ext2fs_get_icount_size(ext2_icount_t icount); 695errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *); 696 697/* ismounted.c */ 698extern errcode_t ext2fs_check_if_mounted(const char *file, int *mount_flags); 699extern errcode_t ext2fs_check_mount_point(const char *device, int *mount_flags, 700 char *mtpt, int mtlen); 701 702/* namei.c */ 703extern errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name, 704 int namelen, char *buf, ext2_ino_t *inode); 705extern errcode_t ext2fs_namei(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 706 const char *name, ext2_ino_t *inode); 707errcode_t ext2fs_namei_follow(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 708 const char *name, ext2_ino_t *inode); 709extern errcode_t ext2fs_follow_link(ext2_filsys fs, ext2_ino_t root, ext2_ino_t cwd, 710 ext2_ino_t inode, ext2_ino_t *res_inode); 711 712/* native.c */ 713int ext2fs_native_flag(void); 714 715/* newdir.c */ 716extern errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino, 717 ext2_ino_t parent_ino, char **block); 718 719/* mkdir.c */ 720extern errcode_t ext2fs_mkdir(ext2_filsys fs, ext2_ino_t parent, ext2_ino_t inum, 721 const char *name); 722 723/* mkjournal.c */ 724extern errcode_t ext2fs_create_journal_superblock(ext2_filsys fs, 725 __u32 size, int flags, 726 char **ret_jsb); 727extern errcode_t ext2fs_add_journal_device(ext2_filsys fs, 728 ext2_filsys journal_dev); 729extern errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t size, 730 int flags); 731 732/* openfs.c */ 733extern errcode_t ext2fs_open(const char *name, int flags, int superblock, 734 int block_size, io_manager manager, 735 ext2_filsys *ret_fs); 736 737/* get_pathname.c */ 738extern errcode_t ext2fs_get_pathname(ext2_filsys fs, ext2_ino_t dir, ext2_ino_t ino, 739 char **name); 740 741/* link.c */ 742errcode_t ext2fs_link(ext2_filsys fs, ext2_ino_t dir, const char *name, 743 ext2_ino_t ino, int flags); 744errcode_t ext2fs_unlink(ext2_filsys fs, ext2_ino_t dir, const char *name, 745 ext2_ino_t ino, int flags); 746 747/* read_bb.c */ 748extern errcode_t ext2fs_read_bb_inode(ext2_filsys fs, 749 ext2_badblocks_list *bb_list); 750 751/* read_bb_file.c */ 752extern errcode_t ext2fs_read_bb_FILE2(ext2_filsys fs, FILE *f, 753 ext2_badblocks_list *bb_list, 754 void *private, 755 void (*invalid)(ext2_filsys fs, 756 blk_t blk, 757 char *badstr, 758 void *private)); 759extern errcode_t ext2fs_read_bb_FILE(ext2_filsys fs, FILE *f, 760 ext2_badblocks_list *bb_list, 761 void (*invalid)(ext2_filsys fs, 762 blk_t blk)); 763 764/* rs_bitmap.c */ 765extern errcode_t ext2fs_resize_generic_bitmap(__u32 new_end, 766 __u32 new_real_end, 767 ext2fs_generic_bitmap bmap); 768extern errcode_t ext2fs_resize_inode_bitmap(__u32 new_end, __u32 new_real_end, 769 ext2fs_inode_bitmap bmap); 770extern errcode_t ext2fs_resize_block_bitmap(__u32 new_end, __u32 new_real_end, 771 ext2fs_block_bitmap bmap); 772extern errcode_t ext2fs_copy_bitmap(ext2fs_generic_bitmap src, 773 ext2fs_generic_bitmap *dest); 774 775/* swapfs.c */ 776extern void ext2fs_swap_super(struct ext2_super_block * super); 777extern void ext2fs_swap_group_desc(struct ext2_group_desc *gdp); 778extern void ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode *t, 779 struct ext2_inode *f, int hostorder); 780 781/* valid_blk.c */ 782extern int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode); 783 784/* version.c */ 785extern int ext2fs_parse_version_string(const char *ver_string); 786extern int ext2fs_get_library_version(const char **ver_string, 787 const char **date_string); 788 789/* write_bb_file.c */ 790extern errcode_t ext2fs_write_bb_FILE(ext2_badblocks_list bb_list, 791 unsigned int flags, 792 FILE *f); 793 794 795/* inline functions */ 796extern errcode_t ext2fs_get_mem(unsigned long size, void **ptr); 797extern errcode_t ext2fs_free_mem(void **ptr); 798extern errcode_t ext2fs_resize_mem(unsigned long old_size, 799 unsigned long size, void **ptr); 800extern void ext2fs_mark_super_dirty(ext2_filsys fs); 801extern void ext2fs_mark_changed(ext2_filsys fs); 802extern int ext2fs_test_changed(ext2_filsys fs); 803extern void ext2fs_mark_valid(ext2_filsys fs); 804extern void ext2fs_unmark_valid(ext2_filsys fs); 805extern int ext2fs_test_valid(ext2_filsys fs); 806extern void ext2fs_mark_ib_dirty(ext2_filsys fs); 807extern void ext2fs_mark_bb_dirty(ext2_filsys fs); 808extern int ext2fs_test_ib_dirty(ext2_filsys fs); 809extern int ext2fs_test_bb_dirty(ext2_filsys fs); 810extern int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk); 811extern int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino); 812 813/* 814 * The actual inlined functions definitions themselves... 815 * 816 * If NO_INLINE_FUNCS is defined, then we won't try to do inline 817 * functions at all! 818 */ 819#if (defined(INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS)) 820#ifdef INCLUDE_INLINE_FUNCS 821#define _INLINE_ extern 822#else 823#ifdef __GNUC__ 824#define _INLINE_ extern __inline__ 825#else /* For Watcom C */ 826#define _INLINE_ extern inline 827#endif 828#endif 829 830#ifndef EXT2_CUSTOM_MEMORY_ROUTINES 831/* 832 * Allocate memory 833 */ 834_INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void **ptr) 835{ 836 *ptr = malloc(size); 837 if (!*ptr) 838 return EXT2_ET_NO_MEMORY; 839 return 0; 840} 841 842/* 843 * Free memory 844 */ 845_INLINE_ errcode_t ext2fs_free_mem(void **ptr) 846{ 847 free(*ptr); 848 *ptr = 0; 849 return 0; 850} 851 852/* 853 * Resize memory 854 */ 855_INLINE_ errcode_t ext2fs_resize_mem(unsigned long old_size, 856 unsigned long size, void **ptr) 857{ 858 void *p; 859 860 p = realloc(*ptr, size); 861 if (!p) 862 return EXT2_ET_NO_MEMORY; 863 *ptr = p; 864 return 0; 865} 866#endif /* Custom memory routines */ 867 868/* 869 * Mark a filesystem superblock as dirty 870 */ 871_INLINE_ void ext2fs_mark_super_dirty(ext2_filsys fs) 872{ 873 fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_CHANGED; 874} 875 876/* 877 * Mark a filesystem as changed 878 */ 879_INLINE_ void ext2fs_mark_changed(ext2_filsys fs) 880{ 881 fs->flags |= EXT2_FLAG_CHANGED; 882} 883 884/* 885 * Check to see if a filesystem has changed 886 */ 887_INLINE_ int ext2fs_test_changed(ext2_filsys fs) 888{ 889 return (fs->flags & EXT2_FLAG_CHANGED); 890} 891 892/* 893 * Mark a filesystem as valid 894 */ 895_INLINE_ void ext2fs_mark_valid(ext2_filsys fs) 896{ 897 fs->flags |= EXT2_FLAG_VALID; 898} 899 900/* 901 * Mark a filesystem as NOT valid 902 */ 903_INLINE_ void ext2fs_unmark_valid(ext2_filsys fs) 904{ 905 fs->flags &= ~EXT2_FLAG_VALID; 906} 907 908/* 909 * Check to see if a filesystem is valid 910 */ 911_INLINE_ int ext2fs_test_valid(ext2_filsys fs) 912{ 913 return (fs->flags & EXT2_FLAG_VALID); 914} 915 916/* 917 * Mark the inode bitmap as dirty 918 */ 919_INLINE_ void ext2fs_mark_ib_dirty(ext2_filsys fs) 920{ 921 fs->flags |= EXT2_FLAG_IB_DIRTY | EXT2_FLAG_CHANGED; 922} 923 924/* 925 * Mark the block bitmap as dirty 926 */ 927_INLINE_ void ext2fs_mark_bb_dirty(ext2_filsys fs) 928{ 929 fs->flags |= EXT2_FLAG_BB_DIRTY | EXT2_FLAG_CHANGED; 930} 931 932/* 933 * Check to see if a filesystem's inode bitmap is dirty 934 */ 935_INLINE_ int ext2fs_test_ib_dirty(ext2_filsys fs) 936{ 937 return (fs->flags & EXT2_FLAG_IB_DIRTY); 938} 939 940/* 941 * Check to see if a filesystem's block bitmap is dirty 942 */ 943_INLINE_ int ext2fs_test_bb_dirty(ext2_filsys fs) 944{ 945 return (fs->flags & EXT2_FLAG_BB_DIRTY); 946} 947 948/* 949 * Return the group # of a block 950 */ 951_INLINE_ int ext2fs_group_of_blk(ext2_filsys fs, blk_t blk) 952{ 953 return (blk - fs->super->s_first_data_block) / 954 fs->super->s_blocks_per_group; 955} 956 957/* 958 * Return the group # of an inode number 959 */ 960_INLINE_ int ext2fs_group_of_ino(ext2_filsys fs, ext2_ino_t ino) 961{ 962 return (ino - 1) / fs->super->s_inodes_per_group; 963} 964#undef _INLINE_ 965#endif 966 967#ifdef __cplusplus 968} 969#endif 970 971#endif /* _EXT2FS_EXT2FS_H */ 972