Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 1 | /* |
| 2 | * pass3.c -- pass #3 of e2fsck: Check for directory connectivity |
| 3 | * |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 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% |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 10 | * |
| 11 | * Pass #3 assures that all directories are connected to the |
| 12 | * filesystem tree, using the following algorithm: |
| 13 | * |
| 14 | * First, the root directory is checked to make sure it exists; if |
| 15 | * not, e2fsck will offer to create a new one. It is then marked as |
| 16 | * "done". |
| 17 | * |
| 18 | * Then, pass3 interates over all directory inodes; for each directory |
| 19 | * it attempts to trace up the filesystem tree, using dirinfo.parent |
| 20 | * until it reaches a directory which has been marked "done". If it |
| 21 | * can not do so, then the directory must be disconnected, and e2fsck |
| 22 | * will offer to reconnect it to /lost+found. While it is chasing |
| 23 | * parent pointers up the filesystem tree, if pass3 sees a directory |
| 24 | * twice, then it has detected a filesystem loop, and it will again |
| 25 | * offer to reconnect the directory to /lost+found in to break the |
| 26 | * filesystem loop. |
| 27 | * |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 28 | * Pass 3 also contains the subroutine, e2fsck_reconnect_file() to |
| 29 | * reconnect inodes to /lost+found; this subroutine is also used by |
| 30 | * pass 4. e2fsck_reconnect_file() calls get_lost_and_found(), which |
| 31 | * is responsible for creating /lost+found if it does not exist. |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 32 | * |
| 33 | * Pass 3 frees the following data structures: |
| 34 | * - The dirinfo directory information cache. |
| 35 | */ |
| 36 | |
Theodore Ts'o | 50e1e10 | 1997-04-26 13:58:21 +0000 | [diff] [blame] | 37 | #ifdef HAVE_ERRNO_H |
| 38 | #include <errno.h> |
| 39 | #endif |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 40 | |
| 41 | #include "e2fsck.h" |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 42 | #include "problem.h" |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 43 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 44 | static void check_root(e2fsck_t ctx); |
| 45 | static void check_directory(e2fsck_t ctx, struct dir_info *dir, |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 46 | struct problem_context *pctx); |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 47 | static ino_t get_lost_and_found(e2fsck_t ctx); |
| 48 | static void fix_dotdot(e2fsck_t ctx, struct dir_info *dir, ino_t parent); |
| 49 | static errcode_t adjust_inode_count(e2fsck_t ctx, ino_t ino, int adj); |
| 50 | static errcode_t expand_directory(e2fsck_t ctx, ino_t dir); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 51 | |
| 52 | static ino_t lost_and_found = 0; |
| 53 | static int bad_lost_and_found = 0; |
| 54 | |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 55 | static ext2fs_inode_bitmap inode_loop_detect; |
| 56 | static ext2fs_inode_bitmap inode_done_map; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 57 | |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 58 | void e2fsck_pass3(e2fsck_t ctx) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 59 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 60 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 61 | int i; |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 62 | #ifdef RESOURCE_TRACK |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 63 | struct resource_track rtrack; |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 64 | #endif |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 65 | struct problem_context pctx; |
| 66 | struct dir_info *dir; |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 67 | unsigned long max, count; |
| 68 | |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 69 | #ifdef RESOURCE_TRACK |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 70 | init_resource_track(&rtrack); |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 71 | #endif |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 72 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 73 | clear_problem_context(&pctx); |
| 74 | |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 75 | #ifdef MTRACE |
| 76 | mtrace_print("Pass 3"); |
| 77 | #endif |
| 78 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 79 | if (!(ctx->options & E2F_OPT_PREEN)) |
| 80 | fix_problem(ctx, PR_3_PASS_HEADER, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 81 | |
| 82 | /* |
| 83 | * Allocate some bitmaps to do loop detection. |
| 84 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 85 | pctx.errcode = ext2fs_allocate_inode_bitmap(fs, |
| 86 | "inode loop detection bitmap", &inode_loop_detect); |
| 87 | if (pctx.errcode) { |
| 88 | pctx.num = 1; |
| 89 | fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 90 | ctx->flags |= E2F_FLAG_ABORT; |
| 91 | return; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 92 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 93 | pctx.errcode = ext2fs_allocate_inode_bitmap(fs, "inode done bitmap", |
| 94 | &inode_done_map); |
| 95 | if (pctx.errcode) { |
| 96 | pctx.num = 2; |
| 97 | fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 98 | ctx->flags |= E2F_FLAG_ABORT; |
| 99 | return; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 100 | } |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 101 | #ifdef RESOURCE_TRACK |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 102 | if (ctx->options & E2F_OPT_TIME) |
| 103 | print_resource_track("Peak memory", &ctx->global_rtrack); |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 104 | #endif |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 105 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 106 | check_root(ctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 107 | if (ctx->flags & E2F_FLAG_ABORT) |
| 108 | return; |
| 109 | |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 110 | ext2fs_mark_inode_bitmap(inode_done_map, EXT2_ROOT_INO); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 111 | |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 112 | max = e2fsck_get_num_dirinfo(ctx); |
| 113 | count = 0; |
| 114 | |
| 115 | if (ctx->progress) |
| 116 | (ctx->progress)(ctx, 3, 0, max); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 117 | for (i=0; (dir = e2fsck_dir_info_iter(ctx, &i)) != 0;) { |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 118 | if (ctx->progress) |
| 119 | (ctx->progress)(ctx, 3, count++, max); |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 120 | if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, dir->ino)) |
| 121 | check_directory(ctx, dir, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 122 | } |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 123 | if (ctx->progress) |
| 124 | (ctx->progress)(ctx, 3, max, max); |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 125 | |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 126 | e2fsck_free_dir_info(ctx); |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 127 | ext2fs_free_inode_bitmap(inode_loop_detect); |
| 128 | ext2fs_free_inode_bitmap(inode_done_map); |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 129 | #ifdef RESOURCE_TRACK |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 130 | if (ctx->options & E2F_OPT_TIME2) |
| 131 | print_resource_track("Pass 3", &rtrack); |
Theodore Ts'o | 8bf191e | 1997-10-20 01:38:32 +0000 | [diff] [blame] | 132 | #endif |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | /* |
| 136 | * This makes sure the root inode is present; if not, we ask if the |
| 137 | * user wants us to create it. Not creating it is a fatal error. |
| 138 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 139 | static void check_root(e2fsck_t ctx) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 140 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 141 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 142 | blk_t blk; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 143 | struct ext2_inode inode; |
| 144 | char * block; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 145 | struct problem_context pctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 146 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 147 | clear_problem_context(&pctx); |
| 148 | |
| 149 | if (ext2fs_test_inode_bitmap(ctx->inode_used_map, EXT2_ROOT_INO)) { |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 150 | /* |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 151 | * If the root inode is not a directory, die here. The |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 152 | * user must have answered 'no' in pass1 when we |
| 153 | * offered to clear it. |
| 154 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 155 | if (!(ext2fs_test_inode_bitmap(ctx->inode_dir_map, |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 156 | EXT2_ROOT_INO))) { |
| 157 | fix_problem(ctx, PR_3_ROOT_NOT_DIR_ABORT, &pctx); |
| 158 | ctx->flags |= E2F_FLAG_ABORT; |
| 159 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 160 | return; |
| 161 | } |
| 162 | |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 163 | if (!fix_problem(ctx, PR_3_NO_ROOT_INODE, &pctx)) { |
| 164 | fix_problem(ctx, PR_3_NO_ROOT_INODE_ABORT, &pctx); |
| 165 | ctx->flags |= E2F_FLAG_ABORT; |
| 166 | return; |
| 167 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 168 | |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 169 | e2fsck_read_bitmaps(ctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 170 | |
| 171 | /* |
| 172 | * First, find a free block |
| 173 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 174 | pctx.errcode = ext2fs_new_block(fs, 0, ctx->block_found_map, &blk); |
| 175 | if (pctx.errcode) { |
| 176 | pctx.str = "ext2fs_new_block"; |
| 177 | fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 178 | ctx->flags |= E2F_FLAG_ABORT; |
| 179 | return; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 180 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 181 | ext2fs_mark_block_bitmap(ctx->block_found_map, blk); |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 182 | ext2fs_mark_block_bitmap(fs->block_map, blk); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 183 | ext2fs_mark_bb_dirty(fs); |
| 184 | |
| 185 | /* |
| 186 | * Now let's create the actual data block for the inode |
| 187 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 188 | pctx.errcode = ext2fs_new_dir_block(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, |
| 189 | &block); |
| 190 | if (pctx.errcode) { |
| 191 | pctx.str = "ext2fs_new_dir_block"; |
| 192 | fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 193 | ctx->flags |= E2F_FLAG_ABORT; |
| 194 | return; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 195 | } |
| 196 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 197 | pctx.errcode = ext2fs_write_dir_block(fs, blk, block); |
| 198 | if (pctx.errcode) { |
| 199 | pctx.str = "ext2fs_write_dir_block"; |
| 200 | fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 201 | ctx->flags |= E2F_FLAG_ABORT; |
| 202 | return; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 203 | } |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 204 | ext2fs_free_mem((void **) &block); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 205 | |
| 206 | /* |
| 207 | * Set up the inode structure |
| 208 | */ |
| 209 | memset(&inode, 0, sizeof(inode)); |
| 210 | inode.i_mode = 040755; |
| 211 | inode.i_size = fs->blocksize; |
| 212 | inode.i_atime = inode.i_ctime = inode.i_mtime = time(0); |
| 213 | inode.i_links_count = 2; |
| 214 | inode.i_blocks = fs->blocksize / 512; |
| 215 | inode.i_block[0] = blk; |
| 216 | |
| 217 | /* |
| 218 | * Write out the inode. |
| 219 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 220 | pctx.errcode = ext2fs_write_inode(fs, EXT2_ROOT_INO, &inode); |
| 221 | if (pctx.errcode) { |
| 222 | pctx.str = "ext2fs_write_inode"; |
| 223 | fix_problem(ctx, PR_3_CREATE_ROOT_ERROR, &pctx); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 224 | ctx->flags |= E2F_FLAG_ABORT; |
| 225 | return; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | /* |
| 229 | * Miscellaneous bookkeeping... |
| 230 | */ |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 231 | e2fsck_add_dir_info(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO); |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 232 | ext2fs_icount_store(ctx->inode_count, EXT2_ROOT_INO, 2); |
| 233 | ext2fs_icount_store(ctx->inode_link_info, EXT2_ROOT_INO, 2); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 234 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 235 | ext2fs_mark_inode_bitmap(ctx->inode_used_map, EXT2_ROOT_INO); |
| 236 | ext2fs_mark_inode_bitmap(ctx->inode_dir_map, EXT2_ROOT_INO); |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 237 | ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_ROOT_INO); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 238 | ext2fs_mark_ib_dirty(fs); |
| 239 | } |
| 240 | |
| 241 | /* |
| 242 | * This subroutine is responsible for making sure that a particular |
| 243 | * directory is connected to the root; if it isn't we trace it up as |
| 244 | * far as we can go, and then offer to connect the resulting parent to |
| 245 | * the lost+found. We have to do loop detection; if we ever discover |
| 246 | * a loop, we treat that as a disconnected directory and offer to |
| 247 | * reparent it to lost+found. |
| 248 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 249 | static void check_directory(e2fsck_t ctx, struct dir_info *dir, |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 250 | struct problem_context *pctx) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 251 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 252 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 253 | struct dir_info *p = dir; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 254 | |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 255 | ext2fs_clear_inode_bitmap(inode_loop_detect); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 256 | while (p) { |
| 257 | /* |
| 258 | * If we find a parent which we've already checked, |
| 259 | * then stop; we know it's either already connected to |
| 260 | * the directory tree, or it isn't but the user has |
| 261 | * already told us he doesn't want us to reconnect the |
| 262 | * disconnected subtree. |
| 263 | */ |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 264 | if (ext2fs_test_inode_bitmap(inode_done_map, p->ino)) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 265 | goto check_dot_dot; |
| 266 | /* |
| 267 | * Mark this inode as being "done"; by the time we |
| 268 | * return from this function, the inode we either be |
| 269 | * verified as being connected to the directory tree, |
| 270 | * or we will have offered to reconnect this to |
| 271 | * lost+found. |
| 272 | */ |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 273 | ext2fs_mark_inode_bitmap(inode_done_map, p->ino); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 274 | /* |
| 275 | * If this directory doesn't have a parent, or we've |
| 276 | * seen the parent once already, then offer to |
| 277 | * reparent it to lost+found |
| 278 | */ |
| 279 | if (!p->parent || |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 280 | (ext2fs_test_inode_bitmap(inode_loop_detect, |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 281 | p->parent))) |
| 282 | break; |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 283 | ext2fs_mark_inode_bitmap(inode_loop_detect, |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 284 | p->parent); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 285 | p = e2fsck_get_dir_info(ctx, p->parent); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 286 | } |
| 287 | /* |
| 288 | * If we've reached here, we've hit a detached directory |
| 289 | * inode; offer to reconnect it to lost+found. |
| 290 | */ |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 291 | pctx->ino = p->ino; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 292 | if (fix_problem(ctx, PR_3_UNCONNECTED_DIR, pctx)) { |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 293 | if (e2fsck_reconnect_file(ctx, p->ino)) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 294 | ext2fs_unmark_valid(fs); |
| 295 | else { |
| 296 | p->parent = lost_and_found; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 297 | fix_dotdot(ctx, p, lost_and_found); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 298 | } |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 299 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 300 | |
| 301 | /* |
| 302 | * Make sure that .. and the parent directory are the same; |
| 303 | * offer to fix it if not. |
| 304 | */ |
| 305 | check_dot_dot: |
| 306 | if (dir->parent != dir->dotdot) { |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 307 | pctx->ino = dir->ino; |
| 308 | pctx->ino2 = dir->dotdot; |
| 309 | pctx->dir = dir->parent; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 310 | if (fix_problem(ctx, PR_3_BAD_DOT_DOT, pctx)) |
| 311 | fix_dotdot(ctx, dir, dir->parent); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 312 | } |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | * This routine gets the lost_and_found inode, making it a directory |
| 317 | * if necessary |
| 318 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 319 | ino_t get_lost_and_found(e2fsck_t ctx) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 320 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 321 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 322 | ino_t ino; |
| 323 | blk_t blk; |
| 324 | errcode_t retval; |
| 325 | struct ext2_inode inode; |
| 326 | char * block; |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 327 | const char name[] = "lost+found"; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 328 | struct problem_context pctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 329 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 330 | clear_problem_context(&pctx); |
| 331 | |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 332 | retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, |
| 333 | sizeof(name)-1, 0, &ino); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 334 | if (!retval) |
| 335 | return ino; |
Theodore Ts'o | 291c904 | 1997-10-31 06:17:08 +0000 | [diff] [blame] | 336 | if (retval != EXT2_ET_FILE_NOT_FOUND) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 337 | pctx.errcode = retval; |
| 338 | fix_problem(ctx, PR_3_ERR_FIND_LPF, &pctx); |
| 339 | } |
| 340 | if (!fix_problem(ctx, PR_3_NO_LF_DIR, 0)) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 341 | return 0; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 342 | |
| 343 | /* |
| 344 | * Read the inode and block bitmaps in; we'll be messing with |
| 345 | * them. |
| 346 | */ |
Theodore Ts'o | f8188ff | 1997-11-14 05:23:04 +0000 | [diff] [blame] | 347 | e2fsck_read_bitmaps(ctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 348 | |
| 349 | /* |
| 350 | * First, find a free block |
| 351 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 352 | retval = ext2fs_new_block(fs, 0, ctx->block_found_map, &blk); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 353 | if (retval) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 354 | pctx.errcode = retval; |
| 355 | fix_problem(ctx, PR_3_ERR_LPF_NEW_BLOCK, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 356 | return 0; |
| 357 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 358 | ext2fs_mark_block_bitmap(ctx->block_found_map, blk); |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 359 | ext2fs_mark_block_bitmap(fs->block_map, blk); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 360 | ext2fs_mark_bb_dirty(fs); |
| 361 | |
| 362 | /* |
| 363 | * Next find a free inode. |
| 364 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 365 | retval = ext2fs_new_inode(fs, EXT2_ROOT_INO, 040755, |
| 366 | ctx->inode_used_map, &ino); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 367 | if (retval) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 368 | pctx.errcode = retval; |
| 369 | fix_problem(ctx, PR_3_ERR_LPF_NEW_INODE, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 370 | return 0; |
| 371 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 372 | ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino); |
| 373 | ext2fs_mark_inode_bitmap(ctx->inode_dir_map, ino); |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 374 | ext2fs_mark_inode_bitmap(fs->inode_map, ino); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 375 | ext2fs_mark_ib_dirty(fs); |
| 376 | |
| 377 | /* |
| 378 | * Now let's create the actual data block for the inode |
| 379 | */ |
| 380 | retval = ext2fs_new_dir_block(fs, ino, EXT2_ROOT_INO, &block); |
| 381 | if (retval) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 382 | pctx.errcode = retval; |
| 383 | fix_problem(ctx, PR_3_ERR_LPF_NEW_DIR_BLOCK, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 384 | return 0; |
| 385 | } |
| 386 | |
Theodore Ts'o | 50e1e10 | 1997-04-26 13:58:21 +0000 | [diff] [blame] | 387 | retval = ext2fs_write_dir_block(fs, blk, block); |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 388 | ext2fs_free_mem((void **) &block); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 389 | if (retval) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 390 | pctx.errcode = retval; |
| 391 | fix_problem(ctx, PR_3_ERR_LPF_WRITE_BLOCK, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 392 | return 0; |
| 393 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 394 | |
| 395 | /* |
| 396 | * Set up the inode structure |
| 397 | */ |
| 398 | memset(&inode, 0, sizeof(inode)); |
| 399 | inode.i_mode = 040755; |
| 400 | inode.i_size = fs->blocksize; |
| 401 | inode.i_atime = inode.i_ctime = inode.i_mtime = time(0); |
| 402 | inode.i_links_count = 2; |
| 403 | inode.i_blocks = fs->blocksize / 512; |
| 404 | inode.i_block[0] = blk; |
| 405 | |
| 406 | /* |
| 407 | * Next, write out the inode. |
| 408 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 409 | pctx.errcode = ext2fs_write_inode(fs, ino, &inode); |
| 410 | if (pctx.errcode) { |
| 411 | pctx.str = "ext2fs_write_inode"; |
| 412 | fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 413 | return 0; |
| 414 | } |
| 415 | /* |
| 416 | * Finally, create the directory link |
| 417 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 418 | pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, 0); |
| 419 | if (pctx.errcode) { |
| 420 | pctx.str = "ext2fs_link"; |
| 421 | fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | * Miscellaneous bookkeeping that needs to be kept straight. |
| 427 | */ |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 428 | e2fsck_add_dir_info(ctx, ino, EXT2_ROOT_INO); |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 429 | adjust_inode_count(ctx, EXT2_ROOT_INO, +1); |
| 430 | ext2fs_icount_store(ctx->inode_count, ino, 2); |
| 431 | ext2fs_icount_store(ctx->inode_link_info, ino, 2); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 432 | #if 0 |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 433 | printf("/lost+found created; inode #%lu\n", ino); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 434 | #endif |
| 435 | return ino; |
| 436 | } |
| 437 | |
| 438 | /* |
| 439 | * This routine will connect a file to lost+found |
| 440 | */ |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 441 | int e2fsck_reconnect_file(e2fsck_t ctx, ino_t inode) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 442 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 443 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 444 | errcode_t retval; |
| 445 | char name[80]; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 446 | struct problem_context pctx; |
| 447 | |
| 448 | clear_problem_context(&pctx); |
| 449 | pctx.ino = inode; |
| 450 | |
| 451 | if (!bad_lost_and_found && !lost_and_found) { |
| 452 | lost_and_found = get_lost_and_found(ctx); |
| 453 | if (!lost_and_found) |
| 454 | bad_lost_and_found++; |
| 455 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 456 | if (bad_lost_and_found) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 457 | fix_problem(ctx, PR_3_NO_LPF, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 458 | return 1; |
| 459 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 460 | |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 461 | sprintf(name, "#%lu", inode); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 462 | retval = ext2fs_link(fs, lost_and_found, name, inode, 0); |
| 463 | if (retval == EXT2_ET_DIR_NO_SPACE) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 464 | if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx)) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 465 | return 1; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 466 | retval = expand_directory(ctx, lost_and_found); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 467 | if (retval) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 468 | pctx.errcode = retval; |
| 469 | fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 470 | return 1; |
| 471 | } |
| 472 | retval = ext2fs_link(fs, lost_and_found, name, inode, 0); |
| 473 | } |
| 474 | if (retval) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 475 | pctx.errcode = retval; |
| 476 | fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 477 | return 1; |
| 478 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 479 | adjust_inode_count(ctx, inode, +1); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 480 | |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Utility routine to adjust the inode counts on an inode. |
| 486 | */ |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 487 | static errcode_t adjust_inode_count(e2fsck_t ctx, ino_t ino, int adj) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 488 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 489 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 490 | errcode_t retval; |
| 491 | struct ext2_inode inode; |
| 492 | |
| 493 | if (!ino) |
| 494 | return 0; |
| 495 | |
| 496 | retval = ext2fs_read_inode(fs, ino, &inode); |
| 497 | if (retval) |
| 498 | return retval; |
| 499 | |
| 500 | #if 0 |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 501 | printf("Adjusting link count for inode %lu by %d (from %d)\n", ino, adj, |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 502 | inode.i_links_count); |
| 503 | #endif |
| 504 | |
| 505 | inode.i_links_count += adj; |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 506 | if (adj == 1) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 507 | ext2fs_icount_increment(ctx->inode_count, ino, 0); |
| 508 | ext2fs_icount_increment(ctx->inode_link_info, ino, 0); |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 509 | } else { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 510 | ext2fs_icount_decrement(ctx->inode_count, ino, 0); |
| 511 | ext2fs_icount_decrement(ctx->inode_link_info, ino, 0); |
Theodore Ts'o | 21c84b7 | 1997-04-29 16:15:03 +0000 | [diff] [blame] | 512 | } |
| 513 | |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 514 | |
| 515 | retval = ext2fs_write_inode(fs, ino, &inode); |
| 516 | if (retval) |
| 517 | return retval; |
| 518 | |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | /* |
| 523 | * Fix parent --- this routine fixes up the parent of a directory. |
| 524 | */ |
| 525 | struct fix_dotdot_struct { |
| 526 | ext2_filsys fs; |
| 527 | ino_t parent; |
| 528 | int done; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 529 | e2fsck_t ctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 530 | }; |
| 531 | |
| 532 | static int fix_dotdot_proc(struct ext2_dir_entry *dirent, |
| 533 | int offset, |
| 534 | int blocksize, |
| 535 | char *buf, |
Theodore Ts'o | 54dc7ca | 1998-01-19 14:50:49 +0000 | [diff] [blame^] | 536 | void *priv_data) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 537 | { |
Theodore Ts'o | 54dc7ca | 1998-01-19 14:50:49 +0000 | [diff] [blame^] | 538 | struct fix_dotdot_struct *fp = (struct fix_dotdot_struct *) priv_data; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 539 | errcode_t retval; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 540 | struct problem_context pctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 541 | |
| 542 | if (dirent->name_len != 2) |
| 543 | return 0; |
| 544 | if (strncmp(dirent->name, "..", 2)) |
| 545 | return 0; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 546 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 547 | clear_problem_context(&pctx); |
| 548 | |
| 549 | retval = adjust_inode_count(fp->ctx, dirent->inode, -1); |
| 550 | if (retval) { |
| 551 | pctx.errcode = retval; |
| 552 | fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx); |
| 553 | } |
| 554 | retval = adjust_inode_count(fp->ctx, fp->parent, 1); |
| 555 | if (retval) { |
| 556 | pctx.errcode = retval; |
| 557 | fix_problem(fp->ctx, PR_3_ADJUST_INODE, &pctx); |
| 558 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 559 | dirent->inode = fp->parent; |
| 560 | |
| 561 | fp->done++; |
| 562 | return DIRENT_ABORT | DIRENT_CHANGED; |
| 563 | } |
| 564 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 565 | static void fix_dotdot(e2fsck_t ctx, struct dir_info *dir, ino_t parent) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 566 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 567 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 568 | errcode_t retval; |
| 569 | struct fix_dotdot_struct fp; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 570 | struct problem_context pctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 571 | |
| 572 | fp.fs = fs; |
| 573 | fp.parent = parent; |
| 574 | fp.done = 0; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 575 | fp.ctx = ctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 576 | |
| 577 | #if 0 |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 578 | printf("Fixing '..' of inode %lu to be %lu...\n", dir->ino, parent); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 579 | #endif |
| 580 | |
| 581 | retval = ext2fs_dir_iterate(fs, dir->ino, DIRENT_FLAG_INCLUDE_EMPTY, |
| 582 | 0, fix_dotdot_proc, &fp); |
| 583 | if (retval || !fp.done) { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 584 | clear_problem_context(&pctx); |
| 585 | pctx.ino = dir->ino; |
| 586 | pctx.errcode = retval; |
| 587 | fix_problem(ctx, retval ? PR_3_FIX_PARENT_ERR : |
| 588 | PR_3_FIX_PARENT_NOFIND, &pctx); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 589 | ext2fs_unmark_valid(fs); |
| 590 | } |
| 591 | dir->dotdot = parent; |
| 592 | |
| 593 | return; |
| 594 | } |
| 595 | |
| 596 | /* |
| 597 | * These routines are responsible for expanding a /lost+found if it is |
| 598 | * too small. |
| 599 | */ |
| 600 | |
| 601 | struct expand_dir_struct { |
| 602 | int done; |
| 603 | errcode_t err; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 604 | e2fsck_t ctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 605 | }; |
| 606 | |
| 607 | static int expand_dir_proc(ext2_filsys fs, |
| 608 | blk_t *blocknr, |
| 609 | int blockcnt, |
Theodore Ts'o | 54dc7ca | 1998-01-19 14:50:49 +0000 | [diff] [blame^] | 610 | void *priv_data) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 611 | { |
Theodore Ts'o | 54dc7ca | 1998-01-19 14:50:49 +0000 | [diff] [blame^] | 612 | struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 613 | blk_t new_blk; |
| 614 | static blk_t last_blk = 0; |
| 615 | char *block; |
| 616 | errcode_t retval; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 617 | e2fsck_t ctx; |
| 618 | |
| 619 | ctx = es->ctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 620 | |
| 621 | if (*blocknr) { |
| 622 | last_blk = *blocknr; |
| 623 | return 0; |
| 624 | } |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 625 | retval = ext2fs_new_block(fs, last_blk, ctx->block_found_map, |
| 626 | &new_blk); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 627 | if (retval) { |
| 628 | es->err = retval; |
| 629 | return BLOCK_ABORT; |
| 630 | } |
| 631 | if (blockcnt > 0) { |
| 632 | retval = ext2fs_new_dir_block(fs, 0, 0, &block); |
| 633 | if (retval) { |
| 634 | es->err = retval; |
| 635 | return BLOCK_ABORT; |
| 636 | } |
| 637 | es->done = 1; |
Theodore Ts'o | b8647fa | 1997-11-20 21:52:43 +0000 | [diff] [blame] | 638 | retval = ext2fs_write_dir_block(fs, new_blk, block); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 639 | } else { |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 640 | retval = ext2fs_get_mem(fs->blocksize, (void **) &block); |
| 641 | if (retval) { |
| 642 | es->err = retval; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 643 | return BLOCK_ABORT; |
| 644 | } |
| 645 | memset(block, 0, fs->blocksize); |
Theodore Ts'o | b8647fa | 1997-11-20 21:52:43 +0000 | [diff] [blame] | 646 | retval = io_channel_write_blk(fs->io, new_blk, 1, block); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 647 | } |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 648 | if (retval) { |
| 649 | es->err = retval; |
| 650 | return BLOCK_ABORT; |
| 651 | } |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 652 | ext2fs_free_mem((void **) &block); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 653 | *blocknr = new_blk; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 654 | ext2fs_mark_block_bitmap(ctx->block_found_map, new_blk); |
Theodore Ts'o | f3db356 | 1997-04-26 13:34:30 +0000 | [diff] [blame] | 655 | ext2fs_mark_block_bitmap(fs->block_map, new_blk); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 656 | ext2fs_mark_bb_dirty(fs); |
| 657 | if (es->done) |
| 658 | return (BLOCK_CHANGED | BLOCK_ABORT); |
| 659 | else |
| 660 | return BLOCK_CHANGED; |
| 661 | } |
| 662 | |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 663 | static errcode_t expand_directory(e2fsck_t ctx, ino_t dir) |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 664 | { |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 665 | ext2_filsys fs = ctx->fs; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 666 | errcode_t retval; |
| 667 | struct expand_dir_struct es; |
| 668 | struct ext2_inode inode; |
| 669 | |
| 670 | if (!(fs->flags & EXT2_FLAG_RW)) |
| 671 | return EXT2_ET_RO_FILSYS; |
| 672 | |
Theodore Ts'o | b8647fa | 1997-11-20 21:52:43 +0000 | [diff] [blame] | 673 | /* |
| 674 | * Read the inode and block bitmaps in; we'll be messing with |
| 675 | * them. |
| 676 | */ |
| 677 | e2fsck_read_bitmaps(ctx); |
| 678 | |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 679 | retval = ext2fs_check_directory(fs, dir); |
| 680 | if (retval) |
| 681 | return retval; |
| 682 | |
| 683 | es.done = 0; |
| 684 | es.err = 0; |
Theodore Ts'o | 1b6bf17 | 1997-10-03 17:48:10 +0000 | [diff] [blame] | 685 | es.ctx = ctx; |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 686 | |
| 687 | retval = ext2fs_block_iterate(fs, dir, BLOCK_FLAG_APPEND, |
| 688 | 0, expand_dir_proc, &es); |
| 689 | |
| 690 | if (es.err) |
| 691 | return es.err; |
| 692 | if (!es.done) |
| 693 | return EXT2_ET_EXPAND_DIR_ERR; |
| 694 | |
| 695 | /* |
| 696 | * Update the size and block count fields in the inode. |
| 697 | */ |
| 698 | retval = ext2fs_read_inode(fs, dir, &inode); |
| 699 | if (retval) |
| 700 | return retval; |
| 701 | |
| 702 | inode.i_size += fs->blocksize; |
| 703 | inode.i_blocks += fs->blocksize / 512; |
| 704 | |
Theodore Ts'o | 08b2130 | 1997-11-03 19:42:40 +0000 | [diff] [blame] | 705 | e2fsck_write_inode(ctx, dir, &inode, "expand_directory"); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 706 | |
| 707 | return 0; |
| 708 | } |