openfs.c revision 7f1a1fbf850f6b73b5c9c82365f01029fb250a1c
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * openfs.c --- open an ext2 filesystem 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * %Begin-Header% 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This file may be redistributed under the terms of the GNU Library 8868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) * General Public License, version 2. 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * %End-Header% 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 117dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdio.h> 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if HAVE_UNISTD_H 15c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include <unistd.h> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <fcntl.h> 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <time.h> 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if HAVE_SYS_STAT_H 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/stat.h> 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if HAVE_SYS_TYPES_H 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/types.h> 24eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 25eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ext2_fs.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ext2fs.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "e2image.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i) 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int bg; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int has_super = 0; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ret_blk; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) || 392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (i < fs->super->s_first_meta_bg)) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (group_block + i + 1); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bg = EXT2_DESC_PER_BLOCK(fs->super) * i; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ext2fs_bg_has_super(fs, bg)) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) has_super = 1; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ret_blk = ext2fs_group_first_block(fs, bg) + has_super; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 47a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) * If group_block is not the normal value, we're trying to use 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * the backup group descriptors and superblock --- so use the 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * alternate location of the second block group in the 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * metablock group. Ideally we should be testing each bg 51424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) * descriptor block individually for correctness, but we don't 52424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) * have the infrastructure in place to do that. 53424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) */ 54424c4d7b64af9d0d8fd9624f381f469654d5e3d2Torne (Richard Coles) if (group_block != fs->super->s_first_data_block && 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ((ret_blk + fs->super->s_blocks_per_group) < 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->super->s_blocks_count)) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ret_blk += fs->super->s_blocks_per_group; 58eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return ret_blk; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)errcode_t ext2fs_open(const char *name, int flags, int superblock, 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int block_size, io_manager manager, 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ext2_filsys *ret_fs) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ext2fs_open2(name, 0, flags, superblock, block_size, 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) manager, ret_fs); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 69ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch/* 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Note: if superblock is non-zero, block-size must also be non-zero. 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Superblock and block_size can be zero to use the default size. 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Valid flags for ext2fs_open() 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * EXT2_FLAG_RW - Open the filesystem for read/write. 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * EXT2_FLAG_FORCE - Open the filesystem even if some of the 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * features aren't supported. 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * EXT2_FLAG_JOURNAL_DEV_OK - Open an ext3 journal device 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) */ 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)errcode_t ext2fs_open2(const char *name, const char *io_options, 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int flags, int superblock, 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned int block_size, io_manager manager, 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ext2_filsys *ret_fs) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ext2_filsys fs; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) errcode_t retval; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned long i, first_meta_bg; 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) __u32 features; 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int groups_per_block, blocks_per_group, io_flags; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blk_t group_block, blk; 9190dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) char *dest, *cp; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef WORDS_BIGENDIAN 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct ext2_group_desc *gdp; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int j; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_CHECK_MAGIC(manager, EXT2_ET_MAGIC_IO_MANAGER); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs); 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return retval; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memset(fs, 0, sizeof(struct struct_ext2_filsys)); 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->flags = flags; 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* don't overwrite sb backups unless flag is explicitly cleared */ 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->flags |= EXT2_FLAG_MASTER_SB_ONLY; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->umask = 022; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = ext2fs_get_mem(strlen(name)+1, &fs->device_name); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) strcpy(fs->device_name, name); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cp = strchr(fs->device_name, '?'); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!io_options && cp) { 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *cp++ = 0; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) io_options = cp; 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) io_flags = 0; 1202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (flags & EXT2_FLAG_RW) 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) io_flags |= IO_FLAG_RW; 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (flags & EXT2_FLAG_EXCLUSIVE) 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) io_flags |= IO_FLAG_EXCLUSIVE; 1242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (flags & EXT2_FLAG_DIRECT_IO) 1252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) io_flags |= IO_FLAG_DIRECT_IO; 1262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) retval = manager->open(fs->device_name, io_flags, &fs->io); 1272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (retval) 1282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goto cleanup; 1292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (io_options && 1302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (retval = io_channel_set_options(fs->io, io_options))) 1312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goto cleanup; 1322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fs->image_io = fs->io; 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fs->io->app_data = fs; 1342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super); 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goto cleanup; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (flags & EXT2_FLAG_IMAGE_FILE) { 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = ext2fs_get_mem(sizeof(struct ext2_image_hdr), 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) &fs->image_header); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = io_channel_read_blk(fs->io, 0, 1432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) -(int)sizeof(struct ext2_image_hdr), 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->image_header); 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fs->image_header->magic_number != EXT2_ET_MAGIC_E2IMAGE) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return EXT2_ET_MAGIC_E2IMAGE; 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) superblock = 1; 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) block_size = fs->image_header->fs_blocksize; 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If the user specifies a specific block # for the 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * superblock, then he/she must also specify the block size! 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Otherwise, read the master superblock located at offset 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * SUPERBLOCK_OFFSET from the start of the partition. 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Note: we only save a backup copy of the superblock if we 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * are reading the superblock from the primary superblock location. 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (superblock) { 16390dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) if (!block_size) { 16490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) retval = EXT2_ET_INVALID_ARGUMENT; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) io_channel_set_blksize(fs->io, block_size); 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) group_block = superblock; 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->orig_super = 0; 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) io_channel_set_blksize(fs->io, SUPERBLOCK_OFFSET); 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) superblock = 1; 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) group_block = 0; 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super); 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = io_channel_read_blk(fs->io, superblock, -SUPERBLOCK_SIZE, 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->super); 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fs->orig_super) 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) memcpy(fs->orig_super, fs->super, SUPERBLOCK_SIZE); 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef WORDS_BIGENDIAN 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->flags |= EXT2_FLAG_SWAP_BYTES; 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ext2fs_swap_super(fs->super); 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fs->flags & EXT2_FLAG_SWAP_BYTES) { 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_UNIMPLEMENTED; 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fs->super->s_magic != EXT2_SUPER_MAGIC) { 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_BAD_MAGIC; 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fs->super->s_rev_level > EXT2_LIB_CURRENT_REV) { 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_REV_TOO_HIGH; 2017dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch goto cleanup; 202c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 2032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 20490dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) /* 205c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * Check for feature set incompatibility 20690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) */ 207eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (!(flags & EXT2_FLAG_FORCE)) { 208eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch features = fs->super->s_feature_incompat; 2092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifdef EXT2_LIB_SOFTSUPP_INCOMPAT 2102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (flags & EXT2_FLAG_SOFTSUPP_FEATURES) 2112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) features &= !EXT2_LIB_SOFTSUPP_INCOMPAT; 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (features & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) { 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_UNSUPP_FEATURE; 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) features = fs->super->s_feature_ro_compat; 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef EXT2_LIB_SOFTSUPP_RO_COMPAT 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (flags & EXT2_FLAG_SOFTSUPP_FEATURES) 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) features &= !EXT2_LIB_SOFTSUPP_RO_COMPAT; 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((flags & EXT2_FLAG_RW) && 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (features & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP)) { 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_RO_UNSUPP_FEATURE; 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!(flags & EXT2_FLAG_JOURNAL_DEV_OK) && 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (fs->super->s_feature_incompat & 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_UNSUPP_FEATURE; 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((fs->super->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) > 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_MAX_BLOCK_LOG_SIZE) { 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_CORRUPT_SUPERBLOCK; 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->blocksize = EXT2_BLOCK_SIZE(fs->super); 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (EXT2_INODE_SIZE(fs->super) < EXT2_GOOD_OLD_INODE_SIZE) { 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_CORRUPT_SUPERBLOCK; 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->fragsize = EXT2_FRAG_SIZE(fs->super); 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->inode_blocks_per_group = ((EXT2_INODES_PER_GROUP(fs->super) * 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_INODE_SIZE(fs->super) + 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_BLOCK_SIZE(fs->super) - 1) / 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_BLOCK_SIZE(fs->super)); 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (block_size) { 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (block_size != fs->blocksize) { 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_UNEXPECTED_BLOCK_SIZE; 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Set the blocksize to the filesystem's blocksize. 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) io_channel_set_blksize(fs->io, fs->blocksize); 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If this is an external journal device, don't try to read 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the group descriptors, because they're not there. 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fs->super->s_feature_incompat & 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->group_desc_count = 0; 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *ret_fs = fs; 271a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) return 0; 2722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (EXT2_INODES_PER_GROUP(fs->super) == 0) { 2752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) retval = EXT2_ET_CORRUPT_SUPERBLOCK; 2762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goto cleanup; 2772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 2782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Read group descriptors 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blocks_per_group = EXT2_BLOCKS_PER_GROUP(fs->super); 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (blocks_per_group == 0 || 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(fs->super) || 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->inode_blocks_per_group > EXT2_MAX_INODES_PER_GROUP(fs->super) || 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_DESC_PER_BLOCK(fs->super) == 0 || 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->super->s_first_data_block >= fs->super->s_blocks_count) { 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_CORRUPT_SUPERBLOCK; 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->group_desc_count = ext2fs_div_ceil(fs->super->s_blocks_count - 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->super->s_first_data_block, 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) blocks_per_group); 2942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (fs->group_desc_count * EXT2_INODES_PER_GROUP(fs->super) != 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->super->s_inodes_count) { 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = EXT2_ET_CORRUPT_SUPERBLOCK; 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 298a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) } 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count, 3002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) EXT2_DESC_PER_BLOCK(fs->super)); 3012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize, 3022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) &fs->group_desc); 3032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (retval) 3042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) goto cleanup; 3052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!group_block) 3062a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) group_block = fs->super->s_first_data_block; 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dest = (char *) fs->group_desc; 3082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) groups_per_block = EXT2_DESC_PER_BLOCK(fs->super); 3092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) first_meta_bg = fs->super->s_first_meta_bg; 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) first_meta_bg = fs->desc_blocks; 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (first_meta_bg) { 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) retval = io_channel_read_blk(fs->io, group_block+1, 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) first_meta_bg, dest); 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (retval) 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) goto cleanup; 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef WORDS_BIGENDIAN 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gdp = (struct ext2_group_desc *) dest; 3202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (j=0; j < groups_per_block*first_meta_bg; j++) 3212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ext2fs_swap_group_desc(gdp++); 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dest += fs->blocksize*first_meta_bg; 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 325eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch for (i=first_meta_bg ; i < fs->desc_blocks; i++) { 326eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch blk = ext2fs_descriptor_block_loc(fs, group_block, i); 327eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch retval = io_channel_read_blk(fs->io, blk, 1, dest); 328eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (retval) 329eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch goto cleanup; 330eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#ifdef WORDS_BIGENDIAN 331eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch gdp = (struct ext2_group_desc *) dest; 3322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (j=0; j < groups_per_block; j++) 3332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ext2fs_swap_group_desc(gdp++); 3342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 3352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) dest += fs->blocksize; 336eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 337eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 338eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch fs->stride = fs->super->s_raid_stride; 339eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 340c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /* 341c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * If recovery is from backup superblock, Clear _UNININT flags & 342c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) * reset bg_itable_unused to zero 343c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) */ 344eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (superblock > 1 && EXT2_HAS_RO_COMPAT_FEATURE(fs->super, 345eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { 346eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch struct ext2_group_desc *gd; 347eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch for (i = 0, gd = fs->group_desc; i < fs->group_desc_count; 348eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch i++, gd++) { 349eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch gd->bg_flags &= ~EXT2_BG_BLOCK_UNINIT; 350eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch gd->bg_flags &= ~EXT2_BG_INODE_UNINIT; 351eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch gd->bg_itable_unused = 0; 352eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 353eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ext2fs_mark_super_dirty(fs); 354eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 355eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 35690dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) fs->flags &= ~EXT2_FLAG_NOFREE_ON_ERROR; 35790dce4d38c5ff5333bea97d859d4e484e27edf0cTorne (Richard Coles) *ret_fs = fs; 358eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return 0; 359eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochcleanup: 360eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (flags & EXT2_FLAG_NOFREE_ON_ERROR) 361eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch *ret_fs = fs; 362eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch else 363eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ext2fs_free(fs); 364eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return retval; 365a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)} 366a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 367a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)/* 368a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) * Set/get the filesystem data I/O channel. 369a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) * 370a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) * These functions are only valid if EXT2_FLAG_IMAGE_FILE is true. 371a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) */ 372a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io) 373a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles){ 374eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0) 375eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return EXT2_ET_NOT_IMAGE_FILE; 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (old_io) { 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *old_io = (fs->image_io == fs->io) ? 0 : fs->io; 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io) 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0) 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return EXT2_ET_NOT_IMAGE_FILE; 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->io = new_io ? new_io : fs->image_io; 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io) 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0) 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return EXT2_ET_NOT_IMAGE_FILE; 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->io = fs->image_io = new_io; 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_RW | 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EXT2_FLAG_BB_DIRTY | EXT2_FLAG_IB_DIRTY; 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fs->flags &= ~EXT2_FLAG_IMAGE_FILE; 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)