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 <errno.h> 13 14 #include "e2fsck.h" 15 #include "problem.h" 16 17 /* 18 * This function allocates an e2fsck context 19 */ 20 errcode_t e2fsck_allocate_context(e2fsck_t *ret) 21 { 22 e2fsck_t context; 23 errcode_t retval; 24 char *time_env; 25 26 retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &context); 27 if (retval) 28 return retval; 29 30 memset(context, 0, sizeof(struct e2fsck_struct)); 31 32 context->process_inode_size = 256; 33 context->ext_attr_ver = 2; 34 context->blocks_per_page = 1; 35 context->htree_slack_percentage = 255; 36 37 time_env = getenv("E2FSCK_TIME"); 38 if (time_env) 39 context->now = strtoul(time_env, NULL, 0); 40 else { 41 context->now = time(0); 42 if (context->now < 1262322000) /* January 1 2010 */ 43 context->flags |= E2F_FLAG_TIME_INSANE; 44 } 45 46 *ret = context; 47 return 0; 48 } 49 50 /* 51 * This function resets an e2fsck context; it is called when e2fsck 52 * needs to be restarted. 53 */ 54 errcode_t e2fsck_reset_context(e2fsck_t ctx) 55 { 56 int i; 57 58 ctx->flags &= E2F_RESET_FLAGS; 59 ctx->lost_and_found = 0; 60 ctx->bad_lost_and_found = 0; 61 if (ctx->inode_used_map) { 62 ext2fs_free_inode_bitmap(ctx->inode_used_map); 63 ctx->inode_used_map = 0; 64 } 65 if (ctx->inode_dir_map) { 66 ext2fs_free_inode_bitmap(ctx->inode_dir_map); 67 ctx->inode_dir_map = 0; 68 } 69 if (ctx->inode_reg_map) { 70 ext2fs_free_inode_bitmap(ctx->inode_reg_map); 71 ctx->inode_reg_map = 0; 72 } 73 if (ctx->block_found_map) { 74 ext2fs_free_block_bitmap(ctx->block_found_map); 75 ctx->block_found_map = 0; 76 } 77 if (ctx->inode_link_info) { 78 ext2fs_free_icount(ctx->inode_link_info); 79 ctx->inode_link_info = 0; 80 } 81 if (ctx->journal_io) { 82 if (ctx->fs && ctx->fs->io != ctx->journal_io) 83 io_channel_close(ctx->journal_io); 84 ctx->journal_io = 0; 85 } 86 if (ctx->fs && ctx->fs->dblist) { 87 ext2fs_free_dblist(ctx->fs->dblist); 88 ctx->fs->dblist = 0; 89 } 90 e2fsck_free_dir_info(ctx); 91 #ifdef ENABLE_HTREE 92 e2fsck_free_dx_dir_info(ctx); 93 #endif 94 if (ctx->refcount) { 95 ea_refcount_free(ctx->refcount); 96 ctx->refcount = 0; 97 } 98 if (ctx->refcount_extra) { 99 ea_refcount_free(ctx->refcount_extra); 100 ctx->refcount_extra = 0; 101 } 102 if (ctx->block_dup_map) { 103 ext2fs_free_block_bitmap(ctx->block_dup_map); 104 ctx->block_dup_map = 0; 105 } 106 if (ctx->block_ea_map) { 107 ext2fs_free_block_bitmap(ctx->block_ea_map); 108 ctx->block_ea_map = 0; 109 } 110 if (ctx->inode_bb_map) { 111 ext2fs_free_inode_bitmap(ctx->inode_bb_map); 112 ctx->inode_bb_map = 0; 113 } 114 if (ctx->inode_bad_map) { 115 ext2fs_free_inode_bitmap(ctx->inode_bad_map); 116 ctx->inode_bad_map = 0; 117 } 118 if (ctx->inode_imagic_map) { 119 ext2fs_free_inode_bitmap(ctx->inode_imagic_map); 120 ctx->inode_imagic_map = 0; 121 } 122 if (ctx->dirs_to_hash) { 123 ext2fs_u32_list_free(ctx->dirs_to_hash); 124 ctx->dirs_to_hash = 0; 125 } 126 127 /* 128 * Clear the array of invalid meta-data flags 129 */ 130 if (ctx->invalid_inode_bitmap_flag) { 131 ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag); 132 ctx->invalid_inode_bitmap_flag = 0; 133 } 134 if (ctx->invalid_block_bitmap_flag) { 135 ext2fs_free_mem(&ctx->invalid_block_bitmap_flag); 136 ctx->invalid_block_bitmap_flag = 0; 137 } 138 if (ctx->invalid_inode_table_flag) { 139 ext2fs_free_mem(&ctx->invalid_inode_table_flag); 140 ctx->invalid_inode_table_flag = 0; 141 } 142 if (ctx->encrypted_dirs) { 143 ext2fs_u32_list_free(ctx->encrypted_dirs); 144 ctx->encrypted_dirs = 0; 145 } 146 147 /* Clear statistic counters */ 148 ctx->fs_directory_count = 0; 149 ctx->fs_regular_count = 0; 150 ctx->fs_blockdev_count = 0; 151 ctx->fs_chardev_count = 0; 152 ctx->fs_links_count = 0; 153 ctx->fs_symlinks_count = 0; 154 ctx->fs_fast_symlinks_count = 0; 155 ctx->fs_fifo_count = 0; 156 ctx->fs_total_count = 0; 157 ctx->fs_badblocks_count = 0; 158 ctx->fs_sockets_count = 0; 159 ctx->fs_ind_count = 0; 160 ctx->fs_dind_count = 0; 161 ctx->fs_tind_count = 0; 162 ctx->fs_fragmented = 0; 163 ctx->fs_fragmented_dir = 0; 164 ctx->large_files = 0; 165 166 for (i=0; i < MAX_EXTENT_DEPTH_COUNT; i++) 167 ctx->extent_depth_count[i] = 0; 168 169 /* Reset the superblock to the user's requested value */ 170 ctx->superblock = ctx->use_superblock; 171 172 return 0; 173 } 174 175 void e2fsck_free_context(e2fsck_t ctx) 176 { 177 if (!ctx) 178 return; 179 180 e2fsck_reset_context(ctx); 181 if (ctx->blkid) 182 blkid_put_cache(ctx->blkid); 183 184 if (ctx->profile) 185 profile_release(ctx->profile); 186 187 if (ctx->filesystem_name) 188 ext2fs_free_mem(&ctx->filesystem_name); 189 190 if (ctx->device_name) 191 ext2fs_free_mem(&ctx->device_name); 192 193 if (ctx->log_fn) 194 free(ctx->log_fn); 195 196 ext2fs_free_mem(&ctx); 197 } 198 199 /* 200 * This function runs through the e2fsck passes and calls them all, 201 * returning restart, abort, or cancel as necessary... 202 */ 203 typedef void (*pass_t)(e2fsck_t ctx); 204 205 static pass_t e2fsck_passes[] = { 206 e2fsck_pass1, e2fsck_pass2, e2fsck_pass3, e2fsck_pass4, 207 e2fsck_pass5, 0 }; 208 209 #define E2F_FLAG_RUN_RETURN (E2F_FLAG_SIGNAL_MASK|E2F_FLAG_RESTART) 210 211 int e2fsck_run(e2fsck_t ctx) 212 { 213 int i; 214 pass_t e2fsck_pass; 215 216 #ifdef HAVE_SETJMP_H 217 if (setjmp(ctx->abort_loc)) { 218 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 219 return (ctx->flags & E2F_FLAG_RUN_RETURN); 220 } 221 ctx->flags |= E2F_FLAG_SETJMP_OK; 222 #endif 223 224 for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) { 225 if (ctx->flags & E2F_FLAG_RUN_RETURN) 226 break; 227 if (e2fsck_mmp_update(ctx->fs)) 228 fatal_error(ctx, 0); 229 e2fsck_pass(ctx); 230 if (ctx->progress) 231 (void) (ctx->progress)(ctx, 0, 0, 0); 232 } 233 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 234 235 if (ctx->flags & E2F_FLAG_RUN_RETURN) 236 return (ctx->flags & E2F_FLAG_RUN_RETURN); 237 return 0; 238 } 239
