Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 1 | /* |
| 2 | * htree.c --- hash tree routines |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 3 | * |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 4 | * Copyright (C) 2002 Theodore Ts'o. This file may be redistributed |
| 5 | * under the terms of the GNU Public License. |
| 6 | */ |
| 7 | |
| 8 | #include <stdio.h> |
| 9 | #include <unistd.h> |
| 10 | #include <stdlib.h> |
| 11 | #include <ctype.h> |
| 12 | #include <string.h> |
| 13 | #include <time.h> |
| 14 | #ifdef HAVE_ERRNO_H |
| 15 | #include <errno.h> |
| 16 | #endif |
| 17 | #include <sys/types.h> |
| 18 | #ifdef HAVE_GETOPT_H |
| 19 | #include <getopt.h> |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 20 | #else |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 21 | extern int optind; |
| 22 | extern char *optarg; |
| 23 | #endif |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 24 | |
| 25 | #include "debugfs.h" |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 26 | #include "uuid/uuid.h" |
| 27 | #include "e2p/e2p.h" |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 28 | |
| 29 | static FILE *pager; |
| 30 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 31 | static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino, |
| 32 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 33 | struct ext2_dx_root_info * rootnode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 34 | blk64_t blk, char *buf) |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 35 | { |
| 36 | errcode_t errcode; |
| 37 | struct ext2_dir_entry *dirent; |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 38 | int thislen, col = 0; |
| 39 | unsigned int offset = 0; |
Brian Behlendorf | b772900 | 2007-03-21 15:09:15 -0400 | [diff] [blame] | 40 | char name[EXT2_NAME_LEN + 1]; |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 41 | char tmp[EXT2_NAME_LEN + 64]; |
| 42 | blk64_t pblk; |
Theodore Ts'o | 226515d | 2008-08-08 11:56:07 -0400 | [diff] [blame] | 43 | ext2_dirhash_t hash, minor_hash; |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 44 | unsigned int rec_len; |
| 45 | int hash_alg; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 46 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 47 | errcode = ext2fs_bmap2(fs, ino, inode, buf, 0, blk, 0, &pblk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 48 | if (errcode) { |
| 49 | com_err("htree_dump_leaf_node", errcode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 50 | "while mapping logical block %llu\n", blk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 51 | return; |
| 52 | } |
| 53 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 54 | fprintf(pager, "Reading directory block %llu, phys %llu\n", blk, pblk); |
Theodore Ts'o | 8132d84 | 2002-10-02 22:07:17 -0400 | [diff] [blame] | 55 | errcode = ext2fs_read_dir_block2(current_fs, pblk, buf, 0); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 56 | if (errcode) { |
| 57 | com_err("htree_dump_leaf_node", errcode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 58 | "while reading block %llu (%llu)\n", |
| 59 | blk, pblk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 60 | return; |
| 61 | } |
Theodore Ts'o | f77704e | 2006-11-11 22:32:35 -0500 | [diff] [blame] | 62 | hash_alg = rootnode->hash_version; |
| 63 | if ((hash_alg <= EXT2_HASH_TEA) && |
| 64 | (fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH)) |
| 65 | hash_alg += 3; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 66 | |
| 67 | while (offset < fs->blocksize) { |
| 68 | dirent = (struct ext2_dir_entry *) (buf + offset); |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 69 | errcode = ext2fs_get_rec_len(fs, dirent, &rec_len); |
| 70 | if (errcode) { |
| 71 | com_err("htree_dump_leaf_inode", errcode, |
| 72 | "while getting rec_len for block %lu", |
| 73 | (unsigned long) blk); |
| 74 | return; |
| 75 | } |
Theodore Ts'o | 5dd77db | 2008-08-25 21:08:19 -0400 | [diff] [blame] | 76 | if (((offset + rec_len) > fs->blocksize) || |
| 77 | (rec_len < 8) || |
| 78 | ((rec_len % 4) != 0) || |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 79 | ((((unsigned) dirent->name_len & 0xFF)+8) > rec_len)) { |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 80 | fprintf(pager, "Corrupted directory block (%llu)!\n", |
| 81 | blk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 82 | break; |
| 83 | } |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 84 | thislen = dirent->name_len & 0xFF; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 85 | strncpy(name, dirent->name, thislen); |
| 86 | name[thislen] = '\0'; |
Theodore Ts'o | f77704e | 2006-11-11 22:32:35 -0500 | [diff] [blame] | 87 | errcode = ext2fs_dirhash(hash_alg, name, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 88 | thislen, fs->super->s_hash_seed, |
Theodore Ts'o | 226515d | 2008-08-08 11:56:07 -0400 | [diff] [blame] | 89 | &hash, &minor_hash); |
Theodore Ts'o | 52783e0 | 2002-03-11 15:04:45 -0500 | [diff] [blame] | 90 | if (errcode) |
| 91 | com_err("htree_dump_leaf_node", errcode, |
| 92 | "while calculating hash"); |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 93 | snprintf(tmp, EXT2_NAME_LEN + 64, "%u 0x%08x-%08x (%d) %s ", |
| 94 | dirent->inode, hash, minor_hash, rec_len, name); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 95 | thislen = strlen(tmp); |
| 96 | if (col + thislen > 80) { |
| 97 | fprintf(pager, "\n"); |
| 98 | col = 0; |
| 99 | } |
| 100 | fprintf(pager, "%s", tmp); |
| 101 | col += thislen; |
Theodore Ts'o | 5dd77db | 2008-08-25 21:08:19 -0400 | [diff] [blame] | 102 | offset += rec_len; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 103 | } |
| 104 | fprintf(pager, "\n"); |
| 105 | } |
| 106 | |
| 107 | |
| 108 | static void htree_dump_int_block(ext2_filsys fs, ext2_ino_t ino, |
| 109 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 110 | struct ext2_dx_root_info * rootnode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 111 | blk64_t blk, char *buf, int level); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 112 | |
| 113 | |
| 114 | static void htree_dump_int_node(ext2_filsys fs, ext2_ino_t ino, |
| 115 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 116 | struct ext2_dx_root_info * rootnode, |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 117 | struct ext2_dx_entry *ent, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 118 | char *buf, int level) |
| 119 | { |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 120 | struct ext2_dx_countlimit limit; |
| 121 | struct ext2_dx_entry e; |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 122 | int hash, i; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 123 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 124 | |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 125 | limit = *((struct ext2_dx_countlimit *) ent); |
| 126 | limit.count = ext2fs_le16_to_cpu(limit.count); |
| 127 | limit.limit = ext2fs_le16_to_cpu(limit.limit); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 128 | |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 129 | fprintf(pager, "Number of entries (count): %d\n", limit.count); |
| 130 | fprintf(pager, "Number of entries (limit): %d\n", limit.limit); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 131 | |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 132 | for (i=0; i < limit.count; i++) { |
| 133 | hash = i ? ext2fs_le32_to_cpu(ent[i].hash) : 0; |
Eric Sandeen | d0ff90d | 2006-09-12 14:56:15 -0400 | [diff] [blame] | 134 | fprintf(pager, "Entry #%d: Hash 0x%08x%s, block %u\n", i, |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 135 | hash, (hash & 1) ? " (**)" : "", |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 136 | ext2fs_le32_to_cpu(ent[i].block)); |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 137 | } |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 138 | |
| 139 | fprintf(pager, "\n"); |
| 140 | |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 141 | for (i=0; i < limit.count; i++) { |
| 142 | e.hash = ext2fs_le32_to_cpu(ent[i].hash); |
| 143 | e.block = ext2fs_le32_to_cpu(ent[i].block); |
Takashi Sato | 8deb80a | 2006-03-18 21:43:46 -0500 | [diff] [blame] | 144 | fprintf(pager, "Entry #%d: Hash 0x%08x, block %u\n", i, |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 145 | i ? e.hash : 0, e.block); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 146 | if (level) |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 147 | htree_dump_int_block(fs, ino, inode, rootnode, |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 148 | e.block, buf, level-1); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 149 | else |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 150 | htree_dump_leaf_node(fs, ino, inode, rootnode, |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 151 | e.block, buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | fprintf(pager, "---------------------\n"); |
| 155 | } |
| 156 | |
| 157 | static void htree_dump_int_block(ext2_filsys fs, ext2_ino_t ino, |
| 158 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 159 | struct ext2_dx_root_info * rootnode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 160 | blk64_t blk, char *buf, int level) |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 161 | { |
| 162 | char *cbuf; |
| 163 | errcode_t errcode; |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 164 | blk64_t pblk; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 165 | |
| 166 | cbuf = malloc(fs->blocksize); |
| 167 | if (!cbuf) { |
| 168 | fprintf(pager, "Couldn't allocate child block.\n"); |
| 169 | return; |
| 170 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 171 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 172 | errcode = ext2fs_bmap2(fs, ino, inode, buf, 0, blk, 0, &pblk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 173 | if (errcode) { |
| 174 | com_err("htree_dump_int_block", errcode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 175 | "while mapping logical block %llu\n", blk); |
Brian Behlendorf | 8945655 | 2007-03-21 17:53:33 -0400 | [diff] [blame] | 176 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 177 | } |
| 178 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 179 | errcode = io_channel_read_blk64(current_fs->io, pblk, 1, buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 180 | if (errcode) { |
| 181 | com_err("htree_dump_int_block", errcode, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 182 | "while reading block %llu\n", blk); |
Brian Behlendorf | 8945655 | 2007-03-21 17:53:33 -0400 | [diff] [blame] | 183 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 184 | } |
| 185 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 186 | htree_dump_int_node(fs, ino, inode, rootnode, |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 187 | (struct ext2_dx_entry *) (buf+8), |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 188 | cbuf, level); |
Brian Behlendorf | 8945655 | 2007-03-21 17:53:33 -0400 | [diff] [blame] | 189 | errout: |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 190 | free(cbuf); |
| 191 | } |
| 192 | |
| 193 | |
| 194 | |
| 195 | void do_htree_dump(int argc, char *argv[]) |
| 196 | { |
| 197 | ext2_ino_t ino; |
| 198 | struct ext2_inode inode; |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 199 | blk64_t blk; |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 200 | char *buf = NULL; |
| 201 | struct ext2_dx_root_info *rootnode; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 202 | struct ext2_dx_entry *ent; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 203 | errcode_t errcode; |
| 204 | |
| 205 | if (check_fs_open(argv[0])) |
| 206 | return; |
| 207 | |
| 208 | pager = open_pager(); |
| 209 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 210 | if (common_inode_args_process(argc, argv, &ino, 0)) |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 211 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 212 | |
| 213 | if (debugfs_read_inode(ino, &inode, argv[1])) |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 214 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 215 | |
| 216 | if (!LINUX_S_ISDIR(inode.i_mode)) { |
| 217 | com_err(argv[0], 0, "Not a directory"); |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 218 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 219 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 220 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 221 | if ((inode.i_flags & EXT2_BTREE_FL) == 0) { |
| 222 | com_err(argv[0], 0, "Not a hash-indexed directory"); |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 223 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | buf = malloc(2*current_fs->blocksize); |
| 227 | if (!buf) { |
| 228 | com_err(argv[0], 0, "Couldn't allocate htree buffer"); |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 229 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 230 | } |
| 231 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 232 | errcode = ext2fs_bmap2(current_fs, ino, &inode, buf, 0, 0, 0, &blk); |
Theodore Ts'o | 226515d | 2008-08-08 11:56:07 -0400 | [diff] [blame] | 233 | if (errcode) { |
| 234 | com_err("do_htree_block", errcode, |
| 235 | "while mapping logical block 0\n"); |
| 236 | goto errout; |
| 237 | } |
| 238 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 239 | errcode = io_channel_read_blk64(current_fs->io, blk, |
| 240 | 1, buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 241 | if (errcode) { |
| 242 | com_err(argv[0], errcode, "Error reading root node"); |
| 243 | goto errout; |
| 244 | } |
| 245 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 246 | rootnode = (struct ext2_dx_root_info *) (buf + 24); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 247 | |
| 248 | fprintf(pager, "Root node dump:\n"); |
Takashi Sato | 8deb80a | 2006-03-18 21:43:46 -0500 | [diff] [blame] | 249 | fprintf(pager, "\t Reserved zero: %u\n", rootnode->reserved_zero); |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 250 | fprintf(pager, "\t Hash Version: %d\n", rootnode->hash_version); |
| 251 | fprintf(pager, "\t Info length: %d\n", rootnode->info_length); |
| 252 | fprintf(pager, "\t Indirect levels: %d\n", rootnode->indirect_levels); |
| 253 | fprintf(pager, "\t Flags: %d\n", rootnode->unused_flags); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 254 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 255 | ent = (struct ext2_dx_entry *) (buf + 24 + rootnode->info_length); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 256 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 257 | htree_dump_int_node(current_fs, ino, &inode, rootnode, ent, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 258 | buf + current_fs->blocksize, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 259 | rootnode->indirect_levels); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 260 | |
| 261 | errout: |
Jim Meyering | 45e338f | 2009-02-23 18:07:50 +0100 | [diff] [blame] | 262 | free(buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 263 | close_pager(pager); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * This function prints the hash of a given file. |
| 268 | */ |
| 269 | void do_dx_hash(int argc, char *argv[]) |
| 270 | { |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 271 | ext2_dirhash_t hash, minor_hash; |
Theodore Ts'o | 52783e0 | 2002-03-11 15:04:45 -0500 | [diff] [blame] | 272 | errcode_t err; |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 273 | int c; |
| 274 | int hash_version = 0; |
| 275 | __u32 hash_seed[4]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 276 | |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 277 | hash_seed[0] = hash_seed[1] = hash_seed[2] = hash_seed[3] = 0; |
Theodore Ts'o | 88494bb | 2003-05-13 23:03:43 -0400 | [diff] [blame] | 278 | |
| 279 | reset_getopt(); |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 280 | while ((c = getopt (argc, argv, "h:s:")) != EOF) { |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 281 | switch (c) { |
| 282 | case 'h': |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 283 | hash_version = e2p_string2hash(optarg); |
| 284 | if (hash_version < 0) |
| 285 | hash_version = atoi(optarg); |
| 286 | break; |
| 287 | case 's': |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 288 | if (uuid_parse(optarg, (unsigned char *) hash_seed)) { |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 289 | fprintf(stderr, "Invalid UUID format: %s\n", |
| 290 | optarg); |
| 291 | return; |
| 292 | } |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 293 | break; |
Theodore Ts'o | 49c6b4e | 2006-04-27 20:59:42 -0400 | [diff] [blame] | 294 | default: |
| 295 | goto print_usage; |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 296 | } |
| 297 | } |
| 298 | if (optind != argc-1) { |
Theodore Ts'o | 49c6b4e | 2006-04-27 20:59:42 -0400 | [diff] [blame] | 299 | print_usage: |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 300 | com_err(argv[0], 0, "usage: dx_hash [-h hash_alg] " |
| 301 | "[-s hash_seed] filename"); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 302 | return; |
| 303 | } |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 304 | err = ext2fs_dirhash(hash_version, argv[optind], strlen(argv[optind]), |
| 305 | hash_seed, &hash, &minor_hash); |
Theodore Ts'o | 52783e0 | 2002-03-11 15:04:45 -0500 | [diff] [blame] | 306 | if (err) { |
| 307 | com_err(argv[0], err, "while caclulating hash"); |
| 308 | return; |
| 309 | } |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 310 | printf("Hash of %s is 0x%0x (minor 0x%0x)\n", argv[optind], |
| 311 | hash, minor_hash); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | /* |
| 315 | * Search for particular directory entry (useful for debugging very |
| 316 | * large hash tree directories that have lost some blocks from the |
| 317 | * btree index). |
| 318 | */ |
| 319 | struct process_block_struct { |
| 320 | char *search_name; |
| 321 | char *buf; |
| 322 | int len; |
| 323 | }; |
| 324 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 325 | static int search_dir_block(ext2_filsys fs, blk64_t *blocknr, |
| 326 | e2_blkcnt_t blockcnt, blk64_t ref_blk, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 327 | int ref_offset, void *priv_data); |
| 328 | |
| 329 | void do_dirsearch(int argc, char *argv[]) |
| 330 | { |
| 331 | ext2_ino_t inode; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 332 | struct process_block_struct pb; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 333 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 334 | if (check_fs_open(argv[0])) |
| 335 | return; |
| 336 | |
| 337 | if (argc != 3) { |
| 338 | com_err(0, 0, "Usage: dirsearch dir filename"); |
| 339 | return; |
| 340 | } |
| 341 | |
| 342 | inode = string_to_inode(argv[1]); |
| 343 | if (!inode) |
| 344 | return; |
| 345 | |
| 346 | pb.buf = malloc(current_fs->blocksize); |
| 347 | if (!pb.buf) { |
| 348 | com_err("dirsearch", 0, "Couldn't allocate buffer"); |
| 349 | return; |
| 350 | } |
| 351 | pb.search_name = argv[2]; |
| 352 | pb.len = strlen(pb.search_name); |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 353 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 354 | ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, 0, |
Theodore Ts'o | 43323be | 2008-02-07 14:37:17 -0500 | [diff] [blame] | 355 | search_dir_block, &pb); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 356 | |
| 357 | free(pb.buf); |
| 358 | } |
| 359 | |
| 360 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 361 | static int search_dir_block(ext2_filsys fs, blk64_t *blocknr, |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 362 | e2_blkcnt_t blockcnt, |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 363 | blk64_t ref_blk EXT2FS_ATTR((unused)), |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 364 | int ref_offset EXT2FS_ATTR((unused)), |
| 365 | void *priv_data) |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 366 | { |
| 367 | struct process_block_struct *p; |
| 368 | struct ext2_dir_entry *dirent; |
| 369 | errcode_t errcode; |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 370 | unsigned int offset = 0; |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 371 | unsigned int rec_len; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 372 | |
| 373 | if (blockcnt < 0) |
| 374 | return 0; |
| 375 | |
| 376 | p = (struct process_block_struct *) priv_data; |
| 377 | |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 378 | errcode = io_channel_read_blk64(current_fs->io, *blocknr, 1, p->buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 379 | if (errcode) { |
| 380 | com_err("search_dir_block", errcode, |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 381 | "while reading block %lu", (unsigned long) *blocknr); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 382 | return BLOCK_ABORT; |
| 383 | } |
| 384 | |
| 385 | while (offset < fs->blocksize) { |
| 386 | dirent = (struct ext2_dir_entry *) (p->buf + offset); |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 387 | errcode = ext2fs_get_rec_len(fs, dirent, &rec_len); |
| 388 | if (errcode) { |
| 389 | com_err("htree_dump_leaf_inode", errcode, |
| 390 | "while getting rec_len for block %lu", |
| 391 | (unsigned long) *blocknr); |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 392 | return BLOCK_ABORT; |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 393 | } |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 394 | if (dirent->inode && |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 395 | p->len == (dirent->name_len & 0xFF) && |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 396 | strncmp(p->search_name, dirent->name, |
| 397 | p->len) == 0) { |
| 398 | printf("Entry found at logical block %lld, " |
JP Abgrall | e0ed740 | 2014-03-19 19:08:39 -0700 | [diff] [blame] | 399 | "phys %llu, offset %u\n", (long long)blockcnt, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 400 | *blocknr, offset); |
Takashi Sato | 8deb80a | 2006-03-18 21:43:46 -0500 | [diff] [blame] | 401 | printf("offset %u\n", offset); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 402 | return BLOCK_ABORT; |
| 403 | } |
Theodore Ts'o | 5dd77db | 2008-08-25 21:08:19 -0400 | [diff] [blame] | 404 | offset += rec_len; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 405 | } |
| 406 | return 0; |
| 407 | } |
| 408 | |