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/*
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%08x magic=0x%08x\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)
{
struct tdb_chainwalk_ctx chainwalk;
tdb_off_t rec_ptr, top;
if (i == -1) {
top = FREELIST_TOP;
} else {
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);
tdb_chainwalk_init(&chainwalk, rec_ptr);
if (rec_ptr)
printf("hash=%d\n", i);
while (rec_ptr) {
bool ok;
rec_ptr = tdb_dump_record(tdb, i, rec_ptr);
ok = tdb_chainwalk_check(tdb, &chainwalk, rec_ptr);
if (!ok) {
printf("circular hash chain %d\n", i);
break;
}
}
return tdb_unlock(tdb, i, F_WRLCK);
}
_PUBLIC_ void tdb_dump_all(struct tdb_context *tdb)
{
uint32_t 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);
}
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