1/* 2 * e2fsck.c - a consistency checker for the new extended file system. 3 * 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12#include "config.h" 13#include <errno.h> 14 15#include "e2fsck.h" 16#include "problem.h" 17 18/* 19 * This function allocates an e2fsck context 20 */ 21errcode_t e2fsck_allocate_context(e2fsck_t *ret) 22{ 23 e2fsck_t context; 24 errcode_t retval; 25 char *time_env; 26 27 retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &context); 28 if (retval) 29 return retval; 30 31 memset(context, 0, sizeof(struct e2fsck_struct)); 32 33 context->process_inode_size = 256; 34 context->ext_attr_ver = 2; 35 context->blocks_per_page = 1; 36 context->htree_slack_percentage = 255; 37 38 time_env = getenv("E2FSCK_TIME"); 39 if (time_env) 40 context->now = strtoul(time_env, NULL, 0); 41 else { 42 context->now = time(0); 43 if (context->now < 1262322000) /* January 1 2010 */ 44 context->flags |= E2F_FLAG_TIME_INSANE; 45 } 46 47 *ret = context; 48 return 0; 49} 50 51/* 52 * This function resets an e2fsck context; it is called when e2fsck 53 * needs to be restarted. 54 */ 55errcode_t e2fsck_reset_context(e2fsck_t ctx) 56{ 57 int i; 58 59 ctx->flags &= E2F_RESET_FLAGS; 60 ctx->lost_and_found = 0; 61 ctx->bad_lost_and_found = 0; 62 if (ctx->inode_used_map) { 63 ext2fs_free_inode_bitmap(ctx->inode_used_map); 64 ctx->inode_used_map = 0; 65 } 66 if (ctx->inode_dir_map) { 67 ext2fs_free_inode_bitmap(ctx->inode_dir_map); 68 ctx->inode_dir_map = 0; 69 } 70 if (ctx->inode_reg_map) { 71 ext2fs_free_inode_bitmap(ctx->inode_reg_map); 72 ctx->inode_reg_map = 0; 73 } 74 if (ctx->block_found_map) { 75 ext2fs_free_block_bitmap(ctx->block_found_map); 76 ctx->block_found_map = 0; 77 } 78 if (ctx->inode_link_info) { 79 ext2fs_free_icount(ctx->inode_link_info); 80 ctx->inode_link_info = 0; 81 } 82 if (ctx->journal_io) { 83 if (ctx->fs && ctx->fs->io != ctx->journal_io) 84 io_channel_close(ctx->journal_io); 85 ctx->journal_io = 0; 86 } 87 if (ctx->fs && ctx->fs->dblist) { 88 ext2fs_free_dblist(ctx->fs->dblist); 89 ctx->fs->dblist = 0; 90 } 91 e2fsck_free_dir_info(ctx); 92 e2fsck_free_dx_dir_info(ctx); 93 if (ctx->refcount) { 94 ea_refcount_free(ctx->refcount); 95 ctx->refcount = 0; 96 } 97 if (ctx->refcount_extra) { 98 ea_refcount_free(ctx->refcount_extra); 99 ctx->refcount_extra = 0; 100 } 101 if (ctx->block_dup_map) { 102 ext2fs_free_block_bitmap(ctx->block_dup_map); 103 ctx->block_dup_map = 0; 104 } 105 if (ctx->block_ea_map) { 106 ext2fs_free_block_bitmap(ctx->block_ea_map); 107 ctx->block_ea_map = 0; 108 } 109 if (ctx->block_metadata_map) { 110 ext2fs_free_block_bitmap(ctx->block_metadata_map); 111 ctx->block_metadata_map = 0; 112 } 113 if (ctx->inode_bb_map) { 114 ext2fs_free_inode_bitmap(ctx->inode_bb_map); 115 ctx->inode_bb_map = 0; 116 } 117 if (ctx->inode_bad_map) { 118 ext2fs_free_inode_bitmap(ctx->inode_bad_map); 119 ctx->inode_bad_map = 0; 120 } 121 if (ctx->inode_imagic_map) { 122 ext2fs_free_inode_bitmap(ctx->inode_imagic_map); 123 ctx->inode_imagic_map = 0; 124 } 125 if (ctx->dirs_to_hash) { 126 ext2fs_u32_list_free(ctx->dirs_to_hash); 127 ctx->dirs_to_hash = 0; 128 } 129 130 /* 131 * Clear the array of invalid meta-data flags 132 */ 133 if (ctx->invalid_inode_bitmap_flag) { 134 ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag); 135 ctx->invalid_inode_bitmap_flag = 0; 136 } 137 if (ctx->invalid_block_bitmap_flag) { 138 ext2fs_free_mem(&ctx->invalid_block_bitmap_flag); 139 ctx->invalid_block_bitmap_flag = 0; 140 } 141 if (ctx->invalid_inode_table_flag) { 142 ext2fs_free_mem(&ctx->invalid_inode_table_flag); 143 ctx->invalid_inode_table_flag = 0; 144 } 145 if (ctx->encrypted_dirs) { 146 ext2fs_u32_list_free(ctx->encrypted_dirs); 147 ctx->encrypted_dirs = 0; 148 } 149 150 /* Clear statistic counters */ 151 ctx->fs_directory_count = 0; 152 ctx->fs_regular_count = 0; 153 ctx->fs_blockdev_count = 0; 154 ctx->fs_chardev_count = 0; 155 ctx->fs_links_count = 0; 156 ctx->fs_symlinks_count = 0; 157 ctx->fs_fast_symlinks_count = 0; 158 ctx->fs_fifo_count = 0; 159 ctx->fs_total_count = 0; 160 ctx->fs_badblocks_count = 0; 161 ctx->fs_sockets_count = 0; 162 ctx->fs_ind_count = 0; 163 ctx->fs_dind_count = 0; 164 ctx->fs_tind_count = 0; 165 ctx->fs_fragmented = 0; 166 ctx->fs_fragmented_dir = 0; 167 ctx->large_files = 0; 168 169 for (i=0; i < MAX_EXTENT_DEPTH_COUNT; i++) 170 ctx->extent_depth_count[i] = 0; 171 172 /* Reset the superblock to the user's requested value */ 173 ctx->superblock = ctx->use_superblock; 174 175 return 0; 176} 177 178void e2fsck_free_context(e2fsck_t ctx) 179{ 180 if (!ctx) 181 return; 182 183 e2fsck_reset_context(ctx); 184 if (ctx->blkid) 185 blkid_put_cache(ctx->blkid); 186 187 if (ctx->profile) 188 profile_release(ctx->profile); 189 190 if (ctx->filesystem_name) 191 ext2fs_free_mem(&ctx->filesystem_name); 192 193 if (ctx->device_name) 194 ext2fs_free_mem(&ctx->device_name); 195 196 if (ctx->log_fn) 197 free(ctx->log_fn); 198 199 ext2fs_free_mem(&ctx); 200} 201 202/* 203 * This function runs through the e2fsck passes and calls them all, 204 * returning restart, abort, or cancel as necessary... 205 */ 206typedef void (*pass_t)(e2fsck_t ctx); 207 208static pass_t e2fsck_passes[] = { 209 e2fsck_pass1, e2fsck_pass1e, e2fsck_pass2, e2fsck_pass3, 210 e2fsck_pass4, e2fsck_pass5, 0 }; 211 212int e2fsck_run(e2fsck_t ctx) 213{ 214 int i; 215 pass_t e2fsck_pass; 216 217#ifdef HAVE_SETJMP_H 218 if (setjmp(ctx->abort_loc)) { 219 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 220 return (ctx->flags & E2F_FLAG_RUN_RETURN); 221 } 222 ctx->flags |= E2F_FLAG_SETJMP_OK; 223#endif 224 225 for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) { 226 if (ctx->flags & E2F_FLAG_RUN_RETURN) 227 break; 228 if (e2fsck_mmp_update(ctx->fs)) 229 fatal_error(ctx, 0); 230 e2fsck_pass(ctx); 231 if (ctx->progress) 232 (void) (ctx->progress)(ctx, 0, 0, 0); 233 } 234 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 235 236 if (ctx->flags & E2F_FLAG_RUN_RETURN) 237 return (ctx->flags & E2F_FLAG_RUN_RETURN); 238 return 0; 239} 240