| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 |
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| 4 | trivial database library
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| 5 |
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| 6 | Copyright (C) Andrew Tridgell 1999-2005
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| 7 | Copyright (C) Paul `Rusty' Russell 2000
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| 8 | Copyright (C) Jeremy Allison 2000-2003
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| 9 |
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| 10 | ** NOTE! The following LGPL license applies to the tdb
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| 11 | ** library. This does NOT imply that all of Samba is released
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| 12 | ** under the LGPL
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| 13 |
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| 14 | This library is free software; you can redistribute it and/or
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| 15 | modify it under the terms of the GNU Lesser General Public
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| 16 | License as published by the Free Software Foundation; either
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| 17 | version 3 of the License, or (at your option) any later version.
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| 18 |
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| 19 | This library is distributed in the hope that it will be useful,
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| 20 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 22 | Lesser General Public License for more details.
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| 23 |
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| 24 | You should have received a copy of the GNU Lesser General Public
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| 25 | License along with this library; if not, see <http://www.gnu.org/licenses/>.
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| 26 | */
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| 27 |
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| 28 | #include "tdb_private.h"
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| 29 |
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| 30 | static tdb_off_t tdb_dump_record(struct tdb_context *tdb, int hash,
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| 31 | tdb_off_t offset)
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| 32 | {
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| 33 | struct tdb_record rec;
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| 34 | tdb_off_t tailer_ofs, tailer;
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| 35 |
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| 36 | if (tdb->methods->tdb_read(tdb, offset, (char *)&rec,
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| 37 | sizeof(rec), DOCONV()) == -1) {
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| 38 | printf("ERROR: failed to read record at %u\n", offset);
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| 39 | return 0;
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| 40 | }
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| 41 |
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| 42 | printf(" rec: hash=%d offset=0x%08x next=0x%08x rec_len=%u "
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| 43 | "key_len=%u data_len=%u full_hash=0x%08x magic=0x%08x\n",
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| 44 | hash, offset, rec.next, rec.rec_len, rec.key_len, rec.data_len,
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| 45 | rec.full_hash, rec.magic);
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| 46 |
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| 47 | tailer_ofs = offset + sizeof(rec) + rec.rec_len - sizeof(tdb_off_t);
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| 48 |
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| 49 | if (tdb_ofs_read(tdb, tailer_ofs, &tailer) == -1) {
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| 50 | printf("ERROR: failed to read tailer at %u\n", tailer_ofs);
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| 51 | return rec.next;
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| 52 | }
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| 53 |
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| 54 | if (tailer != rec.rec_len + sizeof(rec)) {
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| 55 | printf("ERROR: tailer does not match record! tailer=%u totalsize=%u\n",
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| 56 | (unsigned int)tailer, (unsigned int)(rec.rec_len + sizeof(rec)));
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| 57 | }
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| 58 | return rec.next;
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| 59 | }
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| 60 |
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| 61 | static int tdb_dump_chain(struct tdb_context *tdb, int i)
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| 62 | {
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| 63 | tdb_off_t rec_ptr, top;
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| 64 |
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| 65 | top = TDB_HASH_TOP(i);
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| 66 |
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| 67 | if (tdb_lock(tdb, i, F_WRLCK) != 0)
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| 68 | return -1;
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| 69 |
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| 70 | if (tdb_ofs_read(tdb, top, &rec_ptr) == -1)
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| 71 | return tdb_unlock(tdb, i, F_WRLCK);
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| 72 |
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| 73 | if (rec_ptr)
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| 74 | printf("hash=%d\n", i);
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| 75 |
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| 76 | while (rec_ptr) {
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| 77 | rec_ptr = tdb_dump_record(tdb, i, rec_ptr);
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| 78 | }
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| 79 |
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| 80 | return tdb_unlock(tdb, i, F_WRLCK);
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| 81 | }
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| 82 |
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| 83 | _PUBLIC_ void tdb_dump_all(struct tdb_context *tdb)
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| 84 | {
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| 85 | int i;
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| 86 | for (i=0;i<tdb->hash_size;i++) {
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| 87 | tdb_dump_chain(tdb, i);
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| 88 | }
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| 89 | printf("freelist:\n");
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| 90 | tdb_dump_chain(tdb, -1);
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| 91 | }
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| 92 |
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| 93 | _PUBLIC_ int tdb_printfreelist(struct tdb_context *tdb)
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| 94 | {
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| 95 | int ret;
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| 96 | long total_free = 0;
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| 97 | tdb_off_t offset, rec_ptr;
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| 98 | struct tdb_record rec;
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| 99 |
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| 100 | if ((ret = tdb_lock(tdb, -1, F_WRLCK)) != 0)
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| 101 | return ret;
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| 102 |
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| 103 | offset = FREELIST_TOP;
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| 104 |
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| 105 | /* read in the freelist top */
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| 106 | if (tdb_ofs_read(tdb, offset, &rec_ptr) == -1) {
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| 107 | tdb_unlock(tdb, -1, F_WRLCK);
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| 108 | return 0;
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| 109 | }
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| 110 |
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| 111 | printf("freelist top=[0x%08x]\n", rec_ptr );
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| 112 | while (rec_ptr) {
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| 113 | if (tdb->methods->tdb_read(tdb, rec_ptr, (char *)&rec,
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| 114 | sizeof(rec), DOCONV()) == -1) {
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| 115 | tdb_unlock(tdb, -1, F_WRLCK);
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| 116 | return -1;
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| 117 | }
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| 118 |
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| 119 | if (rec.magic != TDB_FREE_MAGIC) {
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| 120 | printf("bad magic 0x%08x in free list\n", rec.magic);
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| 121 | tdb_unlock(tdb, -1, F_WRLCK);
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| 122 | return -1;
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| 123 | }
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| 124 |
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| 125 | printf("entry offset=[0x%08x], rec.rec_len = [0x%08x (%u)] (end = 0x%08x)\n",
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| 126 | rec_ptr, rec.rec_len, rec.rec_len, rec_ptr + rec.rec_len);
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| 127 | total_free += rec.rec_len;
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| 128 |
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| 129 | /* move to the next record */
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| 130 | rec_ptr = rec.next;
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| 131 | }
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| 132 | printf("total rec_len = [0x%08lx (%lu)]\n", total_free, total_free);
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| 133 |
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| 134 | return tdb_unlock(tdb, -1, F_WRLCK);
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| 135 | }
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| 136 |
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