e2fsck/e2fsck.c

   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  */
  21 errcode_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  */
  55 errcode_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->ea_block_quota_blocks) {
 102                 ea_refcount_free(ctx->ea_block_quota_blocks);
 103                 ctx->ea_block_quota_blocks = 0;
 104         }
 105         if (ctx->ea_block_quota_inodes) {
 106                 ea_refcount_free(ctx->ea_block_quota_inodes);
 107                 ctx->ea_block_quota_inodes = 0;
 108         }
 109         if (ctx->ea_inode_refs) {
 110                 ea_refcount_free(ctx->ea_inode_refs);
 111                 ctx->ea_inode_refs = 0;
 112         }
 113         if (ctx->block_dup_map) {
 114                 ext2fs_free_block_bitmap(ctx->block_dup_map);
 115                 ctx->block_dup_map = 0;
 116         }
 117         if (ctx->block_ea_map) {
 118                 ext2fs_free_block_bitmap(ctx->block_ea_map);
 119                 ctx->block_ea_map = 0;
 120         }
 121         if (ctx->block_metadata_map) {
 122                 ext2fs_free_block_bitmap(ctx->block_metadata_map);
 123                 ctx->block_metadata_map = 0;
 124         }
 125         if (ctx->inode_bb_map) {
 126                 ext2fs_free_inode_bitmap(ctx->inode_bb_map);
 127                 ctx->inode_bb_map = 0;
 128         }
 129         if (ctx->inode_bad_map) {
 130                 ext2fs_free_inode_bitmap(ctx->inode_bad_map);
 131                 ctx->inode_bad_map = 0;
 132         }
 133         if (ctx->inode_imagic_map) {
 134                 ext2fs_free_inode_bitmap(ctx->inode_imagic_map);
 135                 ctx->inode_imagic_map = 0;
 136         }
 137         if (ctx->dirs_to_hash) {
 138                 ext2fs_u32_list_free(ctx->dirs_to_hash);
 139                 ctx->dirs_to_hash = 0;
 140         }
 141
 142         /*
 143          * Clear the array of invalid meta-data flags
 144          */
 145         if (ctx->invalid_inode_bitmap_flag) {
 146                 ext2fs_free_mem(&ctx->invalid_inode_bitmap_flag);
 147                 ctx->invalid_inode_bitmap_flag = 0;
 148         }
 149         if (ctx->invalid_block_bitmap_flag) {
 150                 ext2fs_free_mem(&ctx->invalid_block_bitmap_flag);
 151                 ctx->invalid_block_bitmap_flag = 0;
 152         }
 153         if (ctx->invalid_inode_table_flag) {
 154                 ext2fs_free_mem(&ctx->invalid_inode_table_flag);
 155                 ctx->invalid_inode_table_flag = 0;
 156         }
 157         if (ctx->encrypted_dirs) {
 158                 ext2fs_u32_list_free(ctx->encrypted_dirs);
 159                 ctx->encrypted_dirs = 0;
 160         }
 161         if (ctx->inode_count) {
 162                 ext2fs_free_icount(ctx->inode_count);
 163                 ctx->inode_count = 0;
 164         }
 165
 166         /* Clear statistic counters */
 167         ctx->fs_directory_count = 0;
 168         ctx->fs_regular_count = 0;
 169         ctx->fs_blockdev_count = 0;
 170         ctx->fs_chardev_count = 0;
 171         ctx->fs_links_count = 0;
 172         ctx->fs_symlinks_count = 0;
 173         ctx->fs_fast_symlinks_count = 0;
 174         ctx->fs_fifo_count = 0;
 175         ctx->fs_total_count = 0;
 176         ctx->fs_badblocks_count = 0;
 177         ctx->fs_sockets_count = 0;
 178         ctx->fs_ind_count = 0;
 179         ctx->fs_dind_count = 0;
 180         ctx->fs_tind_count = 0;
 181         ctx->fs_fragmented = 0;
 182         ctx->fs_fragmented_dir = 0;
 183         ctx->large_files = 0;
 184
 185         for (i=0; i < MAX_EXTENT_DEPTH_COUNT; i++)
 186                 ctx->extent_depth_count[i] = 0;
 187
 188         /* Reset the superblock to the user's requested value */
 189         ctx->superblock = ctx->use_superblock;
 190
 191         return 0;
 192 }
 193
 194 void e2fsck_free_context(e2fsck_t ctx)
 195 {
 196         if (!ctx)
 197                 return;
 198
 199         e2fsck_reset_context(ctx);
 200         if (ctx->blkid)
 201                 blkid_put_cache(ctx->blkid);
 202
 203         if (ctx->profile)
 204                 profile_release(ctx->profile);
 205
 206         if (ctx->filesystem_name)
 207                 ext2fs_free_mem(&ctx->filesystem_name);
 208
 209         if (ctx->device_name)
 210                 ext2fs_free_mem(&ctx->device_name);
 211
 212         if (ctx->log_fn)
 213                 free(ctx->log_fn);
 214
 215         if (ctx->logf)
 216                 fclose(ctx->logf);
 217
 218         if (ctx->problem_log_fn)
 219                 free(ctx->problem_log_fn);
 220
 221         if (ctx->problem_logf) {
 222                 fputs("</problem_log>\n", ctx->problem_logf);
 223                 fclose(ctx->problem_logf);
 224         }
 225         ext2fs_free_mem(&ctx);
 226 }
 227
 228 /*
 229  * This function runs through the e2fsck passes and calls them all,
 230  * returning restart, abort, or cancel as necessary...
 231  */
 232 typedef void (*pass_t)(e2fsck_t ctx);
 233
 234 static pass_t e2fsck_passes[] = {
 235         e2fsck_pass1, e2fsck_pass1e, e2fsck_pass2, e2fsck_pass3,
 236         e2fsck_pass4, e2fsck_pass5, 0 };
 237
 238 int e2fsck_run(e2fsck_t ctx)
 239 {
 240         int     i;
 241         pass_t  e2fsck_pass;
 242
 243 #ifdef HAVE_SETJMP_H
 244         if (setjmp(ctx->abort_loc)) {
 245                 ctx->flags &= ~E2F_FLAG_SETJMP_OK;
 246                 return (ctx->flags & E2F_FLAG_RUN_RETURN);
 247         }
 248         ctx->flags |= E2F_FLAG_SETJMP_OK;
 249 #endif
 250
 251         for (i=0; (e2fsck_pass = e2fsck_passes[i]); i++) {
 252                 if (ctx->flags & E2F_FLAG_RUN_RETURN)
 253                         break;
 254                 if (e2fsck_mmp_update(ctx->fs))
 255                         fatal_error(ctx, 0);
 256                 e2fsck_pass(ctx);
 257                 if (ctx->progress)
 258                         (void) (ctx->progress)(ctx, 0, 0, 0);
 259         }
 260         ctx->flags &= ~E2F_FLAG_SETJMP_OK;
 261
 262         if (ctx->flags & E2F_FLAG_RUN_RETURN)
 263                 return (ctx->flags & E2F_FLAG_RUN_RETURN);
 264         return 0;
 265 }