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 36 time_env = getenv("E2FSCK_TIME"); 37 if (time_env) 38 context->now = strtoul(time_env, NULL, 0); 39 else 40 context->now = time(0); 41 42 *ret = context; 43 return 0; 44 } 45 46 /* 47 * This function resets an e2fsck context; it is called when e2fsck 48 * needs to be restarted. 49 */ 50 errcode_t e2fsck_reset_context(e2fsck_t ctx) 51 { 52 ctx->flags = 0; 53 ctx->lost_and_found = 0; 54 ctx->bad_lost_and_found = 0; 55 if (ctx->inode_used_map) { 56 ext2fs_free_inode_bitmap(ctx->inode_used_map); 57 ctx->inode_used_map = 0; 58 } 59 if (ctx->inode_dir_map) { 60 ext2fs_free_inode_bitmap(ctx->inode_dir_map); 61 ctx->inode_dir_map = 0; 62 } 63 if (ctx->inode_reg_map) { 64 ext2fs_free_inode_bitmap(ctx->inode_reg_map); 65 ctx->inode_reg_map = 0; 66 } 67 if (ctx->block_found_map) { 68 ext2fs_free_block_bitmap(ctx->block_found_map); 69 ctx->block_found_map = 0; 70 } 71 if (ctx->inode_link_info) { 72 ext2fs_free_icount(ctx->inode_link_info); 73 ctx->inode_link_info = 0; 74 } 75 if (ctx->journal_io) { 76 if (ctx->fs && ctx->fs->io != ctx->journal_io) 77 io_channel_close(ctx->journal_io); 78 ctx->journal_io = 0; 79 } 80 if (ctx->fs && ctx->fs->dblist) { 81 ext2fs_free_dblist(ctx->fs->dblist); 82 ctx->fs->dblist = 0; 83 } 84 e2fsck_free_dir_info(ctx); 85 #ifdef ENABLE_HTREE 86 e2fsck_free_dx_dir_info(ctx); 87 #endif 88 if (ctx->refcount) { 89 ea_refcount_free(ctx->refcount); 90 ctx->refcount = 0; 91 } 92 if (ctx->refcount_extra) { 93 ea_refcount_free(ctx->refcount_extra); 94 ctx->refcount_extra = 0; 95 } 96 if (ctx->block_dup_map) { 97 ext2fs_free_block_bitmap(ctx->block_dup_map); 98 ctx->block_dup_map = 0; 99 } 100 if (ctx->block_ea_map) { 101 ext2fs_free_block_bitmap(ctx->block_ea_map); 102 ctx->block_ea_map = 0; 103 } 104 if (ctx->inode_bb_map) { 105 ext2fs_free_inode_bitmap(ctx->inode_bb_map); 106 ctx->inode_bb_map = 0; 107 } 108 if (ctx->inode_bad_map) { 109 ext2fs_free_inode_bitmap(ctx->inode_bad_map); 110 ctx->inode_bad_map = 0; 111 } 112 if (ctx->inode_imagic_map) { 113 ext2fs_free_inode_bitmap(ctx->inode_imagic_map); 114 ctx->inode_imagic_map = 0; 115 } 116 if (ctx->dirs_to_hash) { 117 ext2fs_u32_list_free(ctx->dirs_to_hash); 118 ctx->dirs_to_hash = 0; 119 } 120 121 /* 122 * Clear the array of invalid meta-data flags 123 */ 124 if (ctx->invalid_inode_bitmap_flag) { 125 ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag); 126 ctx->invalid_inode_bitmap_flag = 0; 127 } 128 if (ctx->invalid_block_bitmap_flag) { 129 ext2fs_free_mem(&ctx->invalid_block_bitmap_flag); 130 ctx->invalid_block_bitmap_flag = 0; 131 } 132 if (ctx->invalid_inode_table_flag) { 133 ext2fs_free_mem(&ctx->invalid_inode_table_flag); 134 ctx->invalid_inode_table_flag = 0; 135 } 136 137 /* Clear statistic counters */ 138 ctx->fs_directory_count = 0; 139 ctx->fs_regular_count = 0; 140 ctx->fs_blockdev_count = 0; 141 ctx->fs_chardev_count = 0; 142 ctx->fs_links_count = 0; 143 ctx->fs_symlinks_count = 0; 144 ctx->fs_fast_symlinks_count = 0; 145 ctx->fs_fifo_count = 0; 146 ctx->fs_total_count = 0; 147 ctx->fs_badblocks_count = 0; 148 ctx->fs_sockets_count = 0; 149 ctx->fs_ind_count = 0; 150 ctx->fs_dind_count = 0; 151 ctx->fs_tind_count = 0; 152 ctx->fs_fragmented = 0; 153 ctx->large_files = 0; 154 155 /* Reset the superblock to the user's requested value */ 156 ctx->superblock = ctx->use_superblock; 157 158 return 0; 159 } 160 161 void e2fsck_free_context(e2fsck_t ctx) 162 { 163 if (!ctx) 164 return; 165 166 e2fsck_reset_context(ctx); 167 if (ctx->blkid) 168 blkid_put_cache(ctx->blkid); 169 170 if (ctx->profile) 171 profile_release(ctx->profile); 172 173 ext2fs_free_mem(&ctx); 174 } 175 176 /* 177 * This function runs through the e2fsck passes and calls them all, 178 * returning restart, abort, or cancel as necessary... 179 */ 180 typedef void (*pass_t)(e2fsck_t ctx); 181 182 pass_t e2fsck_passes[] = { 183 e2fsck_pass1, e2fsck_pass2, e2fsck_pass3, e2fsck_pass4, 184 e2fsck_pass5, 0 }; 185 186 #define E2F_FLAG_RUN_RETURN (E2F_FLAG_SIGNAL_MASK|E2F_FLAG_RESTART) 187 188 int e2fsck_run(e2fsck_t ctx) 189 { 190 int i; 191 pass_t e2fsck_pass; 192 193 #ifdef HAVE_SETJMP_H 194 if (setjmp(ctx->abort_loc)) { 195 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 196 return (ctx->flags & E2F_FLAG_RUN_RETURN); 197 } 198 ctx->flags |= E2F_FLAG_SETJMP_OK; 199 #endif 200 201 for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) { 202 if (ctx->flags & E2F_FLAG_RUN_RETURN) 203 break; 204 e2fsck_pass(ctx); 205 if (ctx->progress) 206 (void) (ctx->progress)(ctx, 0, 0, 0); 207 } 208 ctx->flags &= ~E2F_FLAG_SETJMP_OK; 209 210 if (ctx->flags & E2F_FLAG_RUN_RETURN) 211 return (ctx->flags & E2F_FLAG_RUN_RETURN); 212 return 0; 213 } 214
