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 | |
Theodore Ts'o | d1154eb | 2011-09-18 17:34:37 -0400 | [diff] [blame] | 8 | #include "config.h" |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 9 | #include <stdio.h> |
| 10 | #include <unistd.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <ctype.h> |
| 13 | #include <string.h> |
| 14 | #include <time.h> |
| 15 | #ifdef HAVE_ERRNO_H |
| 16 | #include <errno.h> |
| 17 | #endif |
| 18 | #include <sys/types.h> |
| 19 | #ifdef HAVE_GETOPT_H |
| 20 | #include <getopt.h> |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 21 | #else |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 22 | extern int optind; |
| 23 | extern char *optarg; |
| 24 | #endif |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 25 | |
| 26 | #include "debugfs.h" |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 27 | #include "uuid/uuid.h" |
| 28 | #include "e2p/e2p.h" |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 29 | |
| 30 | static FILE *pager; |
| 31 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 32 | static void htree_dump_leaf_node(ext2_filsys fs, ext2_ino_t ino, |
| 33 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 34 | struct ext2_dx_root_info * rootnode, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 35 | blk64_t blk, char *buf) |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 36 | { |
| 37 | errcode_t errcode; |
| 38 | struct ext2_dir_entry *dirent; |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 39 | int thislen, col = 0; |
| 40 | unsigned int offset = 0; |
Brian Behlendorf | b772900 | 2007-03-21 15:09:15 -0400 | [diff] [blame] | 41 | char name[EXT2_NAME_LEN + 1]; |
Darrick J. Wong | 9c23b89 | 2011-11-20 15:47:02 -0500 | [diff] [blame] | 42 | char tmp[EXT2_NAME_LEN + 64]; |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 43 | blk64_t pblk; |
Theodore Ts'o | 226515d | 2008-08-08 11:56:07 -0400 | [diff] [blame] | 44 | ext2_dirhash_t hash, minor_hash; |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 45 | unsigned int rec_len; |
| 46 | int hash_alg; |
Darrick J. Wong | 81683c6 | 2012-08-02 17:27:43 -0400 | [diff] [blame^] | 47 | int csum_size = 0; |
| 48 | |
| 49 | if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
| 50 | EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) |
| 51 | csum_size = sizeof(struct ext2_dir_entry_tail); |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 52 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 53 | errcode = ext2fs_bmap2(fs, ino, inode, buf, 0, blk, 0, &pblk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 54 | if (errcode) { |
| 55 | com_err("htree_dump_leaf_node", errcode, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 56 | "while mapping logical block %llu\n", blk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 57 | return; |
| 58 | } |
| 59 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 60 | printf("Reading directory block %llu, phys %llu\n", blk, pblk); |
Darrick J. Wong | 81683c6 | 2012-08-02 17:27:43 -0400 | [diff] [blame^] | 61 | errcode = ext2fs_read_dir_block4(current_fs, pblk, buf, 0, ino); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 62 | if (errcode) { |
| 63 | com_err("htree_dump_leaf_node", errcode, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 64 | "while reading block %llu (%llu)\n", |
| 65 | blk, pblk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 66 | return; |
| 67 | } |
Theodore Ts'o | f77704e | 2006-11-11 22:32:35 -0500 | [diff] [blame] | 68 | hash_alg = rootnode->hash_version; |
| 69 | if ((hash_alg <= EXT2_HASH_TEA) && |
| 70 | (fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH)) |
| 71 | hash_alg += 3; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 72 | |
Darrick J. Wong | 81683c6 | 2012-08-02 17:27:43 -0400 | [diff] [blame^] | 73 | while (offset < (fs->blocksize - csum_size)) { |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 74 | dirent = (struct ext2_dir_entry *) (buf + offset); |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 75 | errcode = ext2fs_get_rec_len(fs, dirent, &rec_len); |
| 76 | if (errcode) { |
| 77 | com_err("htree_dump_leaf_inode", errcode, |
| 78 | "while getting rec_len for block %lu", |
| 79 | (unsigned long) blk); |
| 80 | return; |
| 81 | } |
Theodore Ts'o | 5dd77db | 2008-08-25 21:08:19 -0400 | [diff] [blame] | 82 | if (((offset + rec_len) > fs->blocksize) || |
| 83 | (rec_len < 8) || |
| 84 | ((rec_len % 4) != 0) || |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 85 | ((((unsigned) dirent->name_len & 0xFF)+8) > rec_len)) { |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 86 | fprintf(pager, "Corrupted directory block (%llu)!\n", |
| 87 | blk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 88 | break; |
| 89 | } |
Eric Sandeen | 11ba79b | 2011-09-16 15:49:17 -0500 | [diff] [blame] | 90 | thislen = dirent->name_len & 0xFF; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 91 | strncpy(name, dirent->name, thislen); |
| 92 | name[thislen] = '\0'; |
Theodore Ts'o | f77704e | 2006-11-11 22:32:35 -0500 | [diff] [blame] | 93 | errcode = ext2fs_dirhash(hash_alg, name, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 94 | thislen, fs->super->s_hash_seed, |
Theodore Ts'o | 226515d | 2008-08-08 11:56:07 -0400 | [diff] [blame] | 95 | &hash, &minor_hash); |
Theodore Ts'o | 52783e0 | 2002-03-11 15:04:45 -0500 | [diff] [blame] | 96 | if (errcode) |
| 97 | com_err("htree_dump_leaf_node", errcode, |
| 98 | "while calculating hash"); |
Darrick J. Wong | 9c23b89 | 2011-11-20 15:47:02 -0500 | [diff] [blame] | 99 | snprintf(tmp, EXT2_NAME_LEN + 64, "%u 0x%08x-%08x (%d) %s ", |
| 100 | dirent->inode, hash, minor_hash, rec_len, name); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 101 | thislen = strlen(tmp); |
| 102 | if (col + thislen > 80) { |
| 103 | fprintf(pager, "\n"); |
| 104 | col = 0; |
| 105 | } |
| 106 | fprintf(pager, "%s", tmp); |
| 107 | col += thislen; |
Theodore Ts'o | 5dd77db | 2008-08-25 21:08:19 -0400 | [diff] [blame] | 108 | offset += rec_len; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 109 | } |
| 110 | fprintf(pager, "\n"); |
| 111 | } |
| 112 | |
| 113 | |
| 114 | static void htree_dump_int_block(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, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 117 | blk64_t blk, char *buf, int level); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 118 | |
| 119 | |
| 120 | static void htree_dump_int_node(ext2_filsys fs, ext2_ino_t ino, |
| 121 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 122 | struct ext2_dx_root_info * rootnode, |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 123 | struct ext2_dx_entry *ent, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 124 | char *buf, int level) |
| 125 | { |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 126 | struct ext2_dx_countlimit limit; |
| 127 | struct ext2_dx_entry e; |
Darrick J. Wong | a996466 | 2012-07-30 19:20:04 -0400 | [diff] [blame] | 128 | struct ext2_dx_tail *tail; |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 129 | int hash, i; |
Darrick J. Wong | a996466 | 2012-07-30 19:20:04 -0400 | [diff] [blame] | 130 | int remainder; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 131 | |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 132 | limit = *((struct ext2_dx_countlimit *) ent); |
| 133 | limit.count = ext2fs_le16_to_cpu(limit.count); |
| 134 | limit.limit = ext2fs_le16_to_cpu(limit.limit); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 135 | |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 136 | fprintf(pager, "Number of entries (count): %d\n", limit.count); |
| 137 | fprintf(pager, "Number of entries (limit): %d\n", limit.limit); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 138 | |
Darrick J. Wong | a996466 | 2012-07-30 19:20:04 -0400 | [diff] [blame] | 139 | remainder = fs->blocksize - (limit.limit * |
| 140 | sizeof(struct ext2_dx_entry)); |
| 141 | if (ent == (struct ext2_dx_entry *)(rootnode + 1)) |
| 142 | remainder -= sizeof(struct ext2_dx_root_info) + 24; |
| 143 | else |
| 144 | remainder -= 8; |
| 145 | if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
| 146 | EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) && |
| 147 | remainder == sizeof(struct ext2_dx_tail)) { |
| 148 | tail = (struct ext2_dx_tail *)(ent + limit.limit); |
| 149 | fprintf(pager, "Checksum: 0x%08x\n", |
| 150 | ext2fs_le32_to_cpu(tail->dt_checksum)); |
| 151 | } |
| 152 | |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 153 | for (i=0; i < limit.count; i++) { |
| 154 | hash = i ? ext2fs_le32_to_cpu(ent[i].hash) : 0; |
Eric Sandeen | d0ff90d | 2006-09-12 14:56:15 -0400 | [diff] [blame] | 155 | 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] | 156 | hash, (hash & 1) ? " (**)" : "", |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 157 | ext2fs_le32_to_cpu(ent[i].block)); |
Theodore Ts'o | 42e5b5f | 2002-09-22 15:27:28 -0400 | [diff] [blame] | 158 | } |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 159 | |
| 160 | fprintf(pager, "\n"); |
| 161 | |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 162 | for (i=0; i < limit.count; i++) { |
| 163 | e.hash = ext2fs_le32_to_cpu(ent[i].hash); |
| 164 | e.block = ext2fs_le32_to_cpu(ent[i].block); |
Takashi Sato | 8deb80a | 2006-03-18 21:43:46 -0500 | [diff] [blame] | 165 | fprintf(pager, "Entry #%d: Hash 0x%08x, block %u\n", i, |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 166 | i ? e.hash : 0, e.block); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 167 | if (level) |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 168 | htree_dump_int_block(fs, ino, inode, rootnode, |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 169 | e.block, buf, level-1); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 170 | else |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 171 | htree_dump_leaf_node(fs, ino, inode, rootnode, |
Theodore Ts'o | 621732c | 2002-07-18 22:19:51 -0400 | [diff] [blame] | 172 | e.block, buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | fprintf(pager, "---------------------\n"); |
| 176 | } |
| 177 | |
| 178 | static void htree_dump_int_block(ext2_filsys fs, ext2_ino_t ino, |
| 179 | struct ext2_inode *inode, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 180 | struct ext2_dx_root_info * rootnode, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 181 | blk64_t blk, char *buf, int level) |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 182 | { |
| 183 | char *cbuf; |
| 184 | errcode_t errcode; |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 185 | blk64_t pblk; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 186 | |
| 187 | cbuf = malloc(fs->blocksize); |
| 188 | if (!cbuf) { |
| 189 | fprintf(pager, "Couldn't allocate child block.\n"); |
| 190 | return; |
| 191 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 192 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 193 | errcode = ext2fs_bmap2(fs, ino, inode, buf, 0, blk, 0, &pblk); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 194 | if (errcode) { |
| 195 | com_err("htree_dump_int_block", errcode, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 196 | "while mapping logical block %llu\n", blk); |
Brian Behlendorf | 8945655 | 2007-03-21 17:53:33 -0400 | [diff] [blame] | 197 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 198 | } |
| 199 | |
Valerie Aurora Henson | 24a117a | 2009-09-07 21:14:24 -0400 | [diff] [blame] | 200 | errcode = io_channel_read_blk64(current_fs->io, pblk, 1, buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 201 | if (errcode) { |
| 202 | com_err("htree_dump_int_block", errcode, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 203 | "while reading block %llu\n", blk); |
Brian Behlendorf | 8945655 | 2007-03-21 17:53:33 -0400 | [diff] [blame] | 204 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 205 | } |
| 206 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 207 | htree_dump_int_node(fs, ino, inode, rootnode, |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 208 | (struct ext2_dx_entry *) (buf+8), |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 209 | cbuf, level); |
Brian Behlendorf | 8945655 | 2007-03-21 17:53:33 -0400 | [diff] [blame] | 210 | errout: |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 211 | free(cbuf); |
| 212 | } |
| 213 | |
| 214 | |
| 215 | |
| 216 | void do_htree_dump(int argc, char *argv[]) |
| 217 | { |
| 218 | ext2_ino_t ino; |
| 219 | struct ext2_inode inode; |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 220 | blk64_t blk; |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 221 | char *buf = NULL; |
| 222 | struct ext2_dx_root_info *rootnode; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 223 | struct ext2_dx_entry *ent; |
| 224 | struct ext2_dx_countlimit *limit; |
| 225 | errcode_t errcode; |
| 226 | |
| 227 | if (check_fs_open(argv[0])) |
| 228 | return; |
| 229 | |
| 230 | pager = open_pager(); |
| 231 | |
Eric Sandeen | 1ec5d10 | 2011-05-11 11:46:19 -0500 | [diff] [blame] | 232 | if (common_inode_args_process(argc, argv, &ino, 0)) |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 233 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 234 | |
| 235 | if (debugfs_read_inode(ino, &inode, argv[1])) |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 236 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 237 | |
| 238 | if (!LINUX_S_ISDIR(inode.i_mode)) { |
| 239 | com_err(argv[0], 0, "Not a directory"); |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 240 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 241 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 242 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 243 | if ((inode.i_flags & EXT2_BTREE_FL) == 0) { |
| 244 | com_err(argv[0], 0, "Not a hash-indexed directory"); |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 245 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | buf = malloc(2*current_fs->blocksize); |
| 249 | if (!buf) { |
| 250 | com_err(argv[0], 0, "Couldn't allocate htree buffer"); |
Theodore Ts'o | 155f577 | 2002-07-21 14:17:45 -0400 | [diff] [blame] | 251 | goto errout; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 252 | } |
| 253 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 254 | 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] | 255 | if (errcode) { |
| 256 | com_err("do_htree_block", errcode, |
| 257 | "while mapping logical block 0\n"); |
| 258 | goto errout; |
| 259 | } |
| 260 | |
Valerie Aurora Henson | 24a117a | 2009-09-07 21:14:24 -0400 | [diff] [blame] | 261 | errcode = io_channel_read_blk64(current_fs->io, blk, |
| 262 | 1, buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 263 | if (errcode) { |
| 264 | com_err(argv[0], errcode, "Error reading root node"); |
| 265 | goto errout; |
| 266 | } |
| 267 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 268 | rootnode = (struct ext2_dx_root_info *) (buf + 24); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 269 | |
| 270 | fprintf(pager, "Root node dump:\n"); |
Takashi Sato | 8deb80a | 2006-03-18 21:43:46 -0500 | [diff] [blame] | 271 | fprintf(pager, "\t Reserved zero: %u\n", rootnode->reserved_zero); |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 272 | fprintf(pager, "\t Hash Version: %d\n", rootnode->hash_version); |
| 273 | fprintf(pager, "\t Info length: %d\n", rootnode->info_length); |
| 274 | fprintf(pager, "\t Indirect levels: %d\n", rootnode->indirect_levels); |
| 275 | fprintf(pager, "\t Flags: %d\n", rootnode->unused_flags); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 276 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 277 | ent = (struct ext2_dx_entry *) (buf + 24 + rootnode->info_length); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 278 | limit = (struct ext2_dx_countlimit *) ent; |
| 279 | |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 280 | htree_dump_int_node(current_fs, ino, &inode, rootnode, ent, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 281 | buf + current_fs->blocksize, |
Theodore Ts'o | 3e69906 | 2002-10-13 23:56:28 -0400 | [diff] [blame] | 282 | rootnode->indirect_levels); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 283 | |
| 284 | errout: |
Jim Meyering | 45e338f | 2009-02-23 18:07:50 +0100 | [diff] [blame] | 285 | free(buf); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 286 | close_pager(pager); |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * This function prints the hash of a given file. |
| 291 | */ |
| 292 | void do_dx_hash(int argc, char *argv[]) |
| 293 | { |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 294 | ext2_dirhash_t hash, minor_hash; |
Theodore Ts'o | 52783e0 | 2002-03-11 15:04:45 -0500 | [diff] [blame] | 295 | errcode_t err; |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 296 | int c; |
| 297 | int hash_version = 0; |
| 298 | __u32 hash_seed[4]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 299 | |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 300 | 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] | 301 | |
| 302 | reset_getopt(); |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 303 | while ((c = getopt (argc, argv, "h:s:")) != EOF) { |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 304 | switch (c) { |
| 305 | case 'h': |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 306 | hash_version = e2p_string2hash(optarg); |
| 307 | if (hash_version < 0) |
| 308 | hash_version = atoi(optarg); |
| 309 | break; |
| 310 | case 's': |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 311 | if (uuid_parse(optarg, (unsigned char *) hash_seed)) { |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 312 | fprintf(stderr, "Invalid UUID format: %s\n", |
| 313 | optarg); |
| 314 | return; |
| 315 | } |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 316 | break; |
Theodore Ts'o | 49c6b4e | 2006-04-27 20:59:42 -0400 | [diff] [blame] | 317 | default: |
| 318 | goto print_usage; |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 319 | } |
| 320 | } |
| 321 | if (optind != argc-1) { |
Theodore Ts'o | 49c6b4e | 2006-04-27 20:59:42 -0400 | [diff] [blame] | 322 | print_usage: |
Theodore Ts'o | f8bd551 | 2008-09-10 11:30:46 -0400 | [diff] [blame] | 323 | com_err(argv[0], 0, "usage: dx_hash [-h hash_alg] " |
| 324 | "[-s hash_seed] filename"); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 325 | return; |
| 326 | } |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 327 | err = ext2fs_dirhash(hash_version, argv[optind], strlen(argv[optind]), |
| 328 | hash_seed, &hash, &minor_hash); |
Theodore Ts'o | 52783e0 | 2002-03-11 15:04:45 -0500 | [diff] [blame] | 329 | if (err) { |
| 330 | com_err(argv[0], err, "while caclulating hash"); |
| 331 | return; |
| 332 | } |
Theodore Ts'o | 503f9e7 | 2002-06-26 16:52:10 -0400 | [diff] [blame] | 333 | printf("Hash of %s is 0x%0x (minor 0x%0x)\n", argv[optind], |
| 334 | hash, minor_hash); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | /* |
| 338 | * Search for particular directory entry (useful for debugging very |
| 339 | * large hash tree directories that have lost some blocks from the |
| 340 | * btree index). |
| 341 | */ |
| 342 | struct process_block_struct { |
| 343 | char *search_name; |
| 344 | char *buf; |
| 345 | int len; |
| 346 | }; |
| 347 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 348 | static int search_dir_block(ext2_filsys fs, blk64_t *blocknr, |
| 349 | e2_blkcnt_t blockcnt, blk64_t ref_blk, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 350 | int ref_offset, void *priv_data); |
| 351 | |
| 352 | void do_dirsearch(int argc, char *argv[]) |
| 353 | { |
| 354 | ext2_ino_t inode; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 355 | struct process_block_struct pb; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 356 | |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 357 | if (check_fs_open(argv[0])) |
| 358 | return; |
| 359 | |
| 360 | if (argc != 3) { |
| 361 | com_err(0, 0, "Usage: dirsearch dir filename"); |
| 362 | return; |
| 363 | } |
| 364 | |
| 365 | inode = string_to_inode(argv[1]); |
| 366 | if (!inode) |
| 367 | return; |
| 368 | |
| 369 | pb.buf = malloc(current_fs->blocksize); |
| 370 | if (!pb.buf) { |
| 371 | com_err("dirsearch", 0, "Couldn't allocate buffer"); |
| 372 | return; |
| 373 | } |
| 374 | pb.search_name = argv[2]; |
| 375 | pb.len = strlen(pb.search_name); |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 376 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 377 | ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, 0, |
Theodore Ts'o | 43323be | 2008-02-07 14:37:17 -0500 | [diff] [blame] | 378 | search_dir_block, &pb); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 379 | |
| 380 | free(pb.buf); |
| 381 | } |
| 382 | |
| 383 | |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 384 | static int search_dir_block(ext2_filsys fs, blk64_t *blocknr, |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 385 | e2_blkcnt_t blockcnt, |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 386 | blk64_t ref_blk EXT2FS_ATTR((unused)), |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 387 | int ref_offset EXT2FS_ATTR((unused)), |
| 388 | void *priv_data) |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 389 | { |
| 390 | struct process_block_struct *p; |
| 391 | struct ext2_dir_entry *dirent; |
| 392 | errcode_t errcode; |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 393 | unsigned int offset = 0; |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 394 | unsigned int rec_len; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 395 | |
| 396 | if (blockcnt < 0) |
| 397 | return 0; |
| 398 | |
| 399 | p = (struct process_block_struct *) priv_data; |
| 400 | |
Valerie Aurora Henson | 24a117a | 2009-09-07 21:14:24 -0400 | [diff] [blame] | 401 | 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] | 402 | if (errcode) { |
| 403 | com_err("search_dir_block", errcode, |
Theodore Ts'o | 5443492 | 2003-12-07 01:28:50 -0500 | [diff] [blame] | 404 | "while reading block %lu", (unsigned long) *blocknr); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 405 | return BLOCK_ABORT; |
| 406 | } |
| 407 | |
| 408 | while (offset < fs->blocksize) { |
| 409 | dirent = (struct ext2_dir_entry *) (p->buf + offset); |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 410 | errcode = ext2fs_get_rec_len(fs, dirent, &rec_len); |
| 411 | if (errcode) { |
| 412 | com_err("htree_dump_leaf_inode", errcode, |
| 413 | "while getting rec_len for block %lu", |
| 414 | (unsigned long) *blocknr); |
Theodore Ts'o | 42080a8 | 2009-07-11 23:23:16 -0400 | [diff] [blame] | 415 | return BLOCK_ABORT; |
Theodore Ts'o | 8a48035 | 2009-06-21 21:07:38 -0400 | [diff] [blame] | 416 | } |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 417 | if (dirent->inode && |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 418 | p->len == (dirent->name_len & 0xFF) && |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 419 | strncmp(p->search_name, dirent->name, |
| 420 | p->len) == 0) { |
| 421 | printf("Entry found at logical block %lld, " |
Valerie Aurora Henson | 048786d | 2009-09-07 22:46:17 -0400 | [diff] [blame] | 422 | "phys %llu, offset %u\n", (long long)blockcnt, |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 423 | *blocknr, offset); |
Takashi Sato | 8deb80a | 2006-03-18 21:43:46 -0500 | [diff] [blame] | 424 | printf("offset %u\n", offset); |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 425 | return BLOCK_ABORT; |
| 426 | } |
Theodore Ts'o | 5dd77db | 2008-08-25 21:08:19 -0400 | [diff] [blame] | 427 | offset += rec_len; |
Theodore Ts'o | df614db | 2002-02-25 04:28:45 -0500 | [diff] [blame] | 428 | } |
| 429 | return 0; |
| 430 | } |
| 431 | |