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