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