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-rw-r--r--common/dump.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/common/dump.c b/common/dump.c
new file mode 100644
index 0000000..adcf591
--- /dev/null
+++ b/common/dump.c
@@ -0,0 +1,149 @@
+ /*
+ 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);
+}
+