source: branches/samba-3.2.x/source/lib/tdb/common/open.c

Last change on this file was 133, checked in by Paul Smedley, 17 years ago

Update trunk to 3.2.0pre3
File size: 17.0 KB
Line 
1 /*
2 Unix SMB/CIFS implementation.
3
4 trivial database library
5
6 Copyright (C) Andrew Tridgell 1999-2005
7 Copyright (C) Paul `Rusty' Russell 2000
8 Copyright (C) Jeremy Allison 2000-2003
9
10 ** NOTE! The following LGPL license applies to the tdb
11 ** library. This does NOT imply that all of Samba is released
12 ** under the LGPL
13
14 This library is free software; you can redistribute it and/or
15 modify it under the terms of the GNU Lesser General Public
16 License as published by the Free Software Foundation; either
17 version 3 of the License, or (at your option) any later version.
18
19 This library is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 Lesser General Public License for more details.
23
24 You should have received a copy of the GNU Lesser General Public
25 License along with this library; if not, see <http://www.gnu.org/licenses/>.
26*/
27
28#include "tdb_private.h"
29
30/* all contexts, to ensure no double-opens (fcntl locks don't nest!) */
31static struct tdb_context *tdbs = NULL;
32
33
34/* This is based on the hash algorithm from gdbm */
35static unsigned int default_tdb_hash(TDB_DATA *key)
36{
37 uint32_t value; /* Used to compute the hash value. */
38 uint32_t i; /* Used to cycle through random values. */
39
40 /* Set the initial value from the key size. */
41 for (value = 0x238F13AF * key->dsize, i=0; i < key->dsize; i++)
42 value = (value + (key->dptr[i] << (i*5 % 24)));
43
44 return (1103515243 * value + 12345);
45}
46
47
48/* initialise a new database with a specified hash size */
49static int tdb_new_database(struct tdb_context *tdb, int hash_size)
50{
51 struct tdb_header *newdb;
52 size_t size;
53 int ret = -1;
54 ssize_t written;
55
56 /* We make it up in memory, then write it out if not internal */
57 size = sizeof(struct tdb_header) + (hash_size+1)*sizeof(tdb_off_t);
58 if (!(newdb = (struct tdb_header *)calloc(size, 1)))
59 return TDB_ERRCODE(TDB_ERR_OOM, -1);
60
61 /* Fill in the header */
62 newdb->version = TDB_VERSION;
63 newdb->hash_size = hash_size;
64 if (tdb->flags & TDB_INTERNAL) {
65 tdb->map_size = size;
66 tdb->map_ptr = (char *)newdb;
67 memcpy(&tdb->header, newdb, sizeof(tdb->header));
68 /* Convert the `ondisk' version if asked. */
69 CONVERT(*newdb);
70 return 0;
71 }
72 if (lseek(tdb->fd, 0, SEEK_SET) == -1)
73 goto fail;
74
75 if (ftruncate(tdb->fd, 0) == -1)
76 goto fail;
77
78 /* This creates an endian-converted header, as if read from disk */
79 CONVERT(*newdb);
80 memcpy(&tdb->header, newdb, sizeof(tdb->header));
81 /* Don't endian-convert the magic food! */
82 memcpy(newdb->magic_food, TDB_MAGIC_FOOD, strlen(TDB_MAGIC_FOOD)+1);
83 /* we still have "ret == -1" here */
84 written = write(tdb->fd, newdb, size);
85 if (written == size) {
86 ret = 0;
87 } else if (written != -1) {
88 /* call write once again, this usually should return -1 and
89 * set errno appropriately */
90 size -= written;
91 written = write(tdb->fd, newdb+written, size);
92 if (written == size) {
93 ret = 0;
94 } else if (written >= 0) {
95 /* a second incomplete write - we give up.
96 * guessing the errno... */
97 errno = ENOSPC;
98 }
99 }
100
101 fail:
102 SAFE_FREE(newdb);
103 return ret;
104}
105
106
107
108static int tdb_already_open(dev_t device,
109 ino_t ino)
110{
111 struct tdb_context *i;
112
113 for (i = tdbs; i; i = i->next) {
114 if (i->device == device && i->inode == ino) {
115 return 1;
116 }
117 }
118
119 return 0;
120}
121
122/* open the database, creating it if necessary
123
124 The open_flags and mode are passed straight to the open call on the
125 database file. A flags value of O_WRONLY is invalid. The hash size
126 is advisory, use zero for a default value.
127
128 Return is NULL on error, in which case errno is also set. Don't
129 try to call tdb_error or tdb_errname, just do strerror(errno).
130
131 @param name may be NULL for internal databases. */
132struct tdb_context *tdb_open(const char *name, int hash_size, int tdb_flags,
133 int open_flags, mode_t mode)
134{
135 return tdb_open_ex(name, hash_size, tdb_flags, open_flags, mode, NULL, NULL);
136}
137
138/* a default logging function */
139static void null_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
140static void null_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...)
141{
142}
143
144
145struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
146 int open_flags, mode_t mode,
147 const struct tdb_logging_context *log_ctx,
148 tdb_hash_func hash_fn)
149{
150 struct tdb_context *tdb;
151 struct stat st;
152 int rev = 0, locked = 0;
153 unsigned char *vp;
154 uint32_t vertest;
155 unsigned v;
156
157 if (!(tdb = (struct tdb_context *)calloc(1, sizeof *tdb))) {
158 /* Can't log this */
159 errno = ENOMEM;
160 goto fail;
161 }
162 tdb_io_init(tdb);
163 tdb->fd = -1;
164 tdb->name = NULL;
165 tdb->map_ptr = NULL;
166 tdb->flags = tdb_flags;
167 tdb->open_flags = open_flags;
168 if (log_ctx) {
169 tdb->log = *log_ctx;
170 } else {
171 tdb->log.log_fn = null_log_fn;
172 tdb->log.log_private = NULL;
173 }
174 tdb->hash_fn = hash_fn ? hash_fn : default_tdb_hash;
175
176#ifdef __OS2__
177 if (!(tdb->flags & TDB_INTERNAL))
178 {
179 char szSem[_MAX_PATH];
180 char drive[_MAX_DRIVE], dir[_MAX_DIR];
181 char fname[_MAX_FNAME], ext[_MAX_EXT];
182 APIRET rc;
183 // extract path info
184 _splitpath( name, drive, dir, fname, ext);
185 sprintf( szSem, "\\SEM32\\TDB_GL_%s%s%s", dir, fname, ext);
186 rc = DosCreateMutexSem( szSem, &tdb->hGlobalLock, 0, FALSE);
187 if (rc == ERROR_DUPLICATE_NAME)
188 rc = DosOpenMutexSem( szSem, &tdb->hGlobalLock);
189 if (rc != NO_ERROR) {
190 printf( "cannot open %s %d\n", szSem, rc);
191 errno = EINVAL;
192 goto fail;
193 }
194 TDB_LOG((tdb, TDB_DEBUG_TRACE,"tdb_open_ex pid %d global handle %d\n", getpid(), tdb->hGlobalLock));
195 sprintf( szSem, "\\SEM32\\TDB_AL_%s%s%s", dir, fname, ext);
196 rc = DosCreateMutexSem( szSem, &tdb->hActiveLock, 0, FALSE);
197 if (rc == ERROR_DUPLICATE_NAME)
198 rc = DosOpenMutexSem( szSem, &tdb->hActiveLock);
199 if (rc != NO_ERROR) {
200 printf( "cannot open %s %d\n", szSem, rc);
201 errno = EINVAL;
202 goto fail;
203 }
204 TDB_LOG((tdb, TDB_DEBUG_TRACE,"tdb_open_ex pid %d active handle %d\n", getpid(), tdb->hActiveLock));
205 sprintf( szSem, "\\SEM32\\TDB_TL_%s%s%s", dir, fname, ext);
206 rc = DosCreateMutexSem( szSem, &tdb->hTransactionLock, 0, FALSE);
207 if (rc == ERROR_DUPLICATE_NAME)
208 rc = DosOpenMutexSem( szSem, &tdb->hTransactionLock);
209 if (rc != NO_ERROR) {
210 printf( "cannot open %s %d\n", szSem, rc);
211 errno = EINVAL;
212 goto fail;
213 }
214 TDB_LOG((tdb, TDB_DEBUG_TRACE,"tdb_open_ex pid %d transaction handle %d\n", getpid(), tdb->hTransactionLock));
215 }
216#endif
217
218 /* cache the page size */
219 tdb->page_size = getpagesize();
220 if (tdb->page_size <= 0) {
221 tdb->page_size = 0x2000;
222 }
223
224 tdb->max_dead_records = (tdb_flags & TDB_VOLATILE) ? 5 : 0;
225
226 if ((open_flags & O_ACCMODE) == O_WRONLY) {
227 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: can't open tdb %s write-only\n",
228 name));
229 errno = EINVAL;
230 goto fail;
231 }
232
233 if (hash_size == 0)
234 hash_size = DEFAULT_HASH_SIZE;
235 if ((open_flags & O_ACCMODE) == O_RDONLY) {
236 tdb->read_only = 1;
237 /* read only databases don't do locking or clear if first */
238 tdb->flags |= TDB_NOLOCK;
239 tdb->flags &= ~TDB_CLEAR_IF_FIRST;
240 }
241
242 /* internal databases don't mmap or lock, and start off cleared */
243 if (tdb->flags & TDB_INTERNAL) {
244 tdb->flags |= (TDB_NOLOCK | TDB_NOMMAP);
245 tdb->flags &= ~TDB_CLEAR_IF_FIRST;
246 if (tdb_new_database(tdb, hash_size) != 0) {
247 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: tdb_new_database failed!"));
248 goto fail;
249 }
250 goto internal;
251 }
252
253 if ((tdb->fd = open(name, open_flags, mode)) == -1) {
254 TDB_LOG((tdb, TDB_DEBUG_WARNING, "tdb_open_ex: could not open file %s: %s\n",
255 name, strerror(errno)));
256 goto fail; /* errno set by open(2) */
257 }
258
259 /* on exec, don't inherit the fd */
260 v = fcntl(tdb->fd, F_GETFD, 0);
261 fcntl(tdb->fd, F_SETFD, v | FD_CLOEXEC);
262
263 /* ensure there is only one process initialising at once */
264 if (tdb->methods->tdb_brlock(tdb, GLOBAL_LOCK, F_WRLCK, F_SETLKW, 0, 1) == -1) {
265 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: failed to get global lock on %s: %s\n",
266 name, strerror(errno)));
267 goto fail; /* errno set by tdb_brlock */
268 }
269
270 /* we need to zero database if we are the only one with it open */
271 if ((tdb_flags & TDB_CLEAR_IF_FIRST)
272#ifndef __OS2__ // we already have global lock
273 && (locked = (tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_WRLCK, F_SETLK, 0, 1) == 0))
274#endif
275 ) {
276 open_flags |= O_CREAT;
277 if (ftruncate(tdb->fd, 0) == -1) {
278 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_open_ex: "
279 "failed to truncate %s: %s\n",
280 name, strerror(errno)));
281 goto fail; /* errno set by ftruncate */
282 }
283 }
284
285 errno = 0;
286 if (read(tdb->fd, &tdb->header, sizeof(tdb->header)) != sizeof(tdb->header)
287 || strcmp(tdb->header.magic_food, TDB_MAGIC_FOOD) != 0
288 || (tdb->header.version != TDB_VERSION
289 && !(rev = (tdb->header.version==TDB_BYTEREV(TDB_VERSION))))) {
290 /* its not a valid database - possibly initialise it */
291 if (!(open_flags & O_CREAT) || tdb_new_database(tdb, hash_size) == -1) {
292 if (errno == 0) {
293 errno = EIO; /* ie bad format or something */
294 }
295 goto fail;
296 }
297 rev = (tdb->flags & TDB_CONVERT);
298 }
299 vp = (unsigned char *)&tdb->header.version;
300 vertest = (((uint32_t)vp[0]) << 24) | (((uint32_t)vp[1]) << 16) |
301 (((uint32_t)vp[2]) << 8) | (uint32_t)vp[3];
302 tdb->flags |= (vertest==TDB_VERSION) ? TDB_BIGENDIAN : 0;
303 if (!rev)
304 tdb->flags &= ~TDB_CONVERT;
305 else {
306 tdb->flags |= TDB_CONVERT;
307 tdb_convert(&tdb->header, sizeof(tdb->header));
308 }
309 if (fstat(tdb->fd, &st) == -1)
310 goto fail;
311
312 if (tdb->header.rwlocks != 0) {
313 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: spinlocks no longer supported\n"));
314 goto fail;
315 }
316
317 /* Is it already in the open list? If so, fail. */
318 if (tdb_already_open(st.st_dev, st.st_ino)) {
319 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: "
320 "%s (%d,%d) is already open in this process\n",
321 name, (int)st.st_dev, (int)st.st_ino));
322 errno = EBUSY;
323 goto fail;
324 }
325
326 if (!(tdb->name = (char *)strdup(name))) {
327 errno = ENOMEM;
328 goto fail;
329 }
330
331 tdb->map_size = st.st_size;
332 tdb->device = st.st_dev;
333 tdb->inode = st.st_ino;
334 tdb_mmap(tdb);
335 if (locked) {
336#ifndef __OS2__
337 if (tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_UNLCK, F_SETLK, 0, 1) == -1) {
338 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: "
339 "failed to take ACTIVE_LOCK on %s: %s\n",
340 name, strerror(errno)));
341 goto fail;
342 }
343#endif
344 }
345
346 /* We always need to do this if the CLEAR_IF_FIRST flag is set, even if
347 we didn't get the initial exclusive lock as we need to let all other
348 users know we're using it. */
349
350#ifndef __OS2__
351 if (tdb_flags & TDB_CLEAR_IF_FIRST) {
352 /* leave this lock in place to indicate it's in use */
353 if (tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_RDLCK, F_SETLKW, 0, 1) == -1)
354 goto fail;
355 }
356#endif
357 /* if needed, run recovery */
358 if (tdb_transaction_recover(tdb) == -1) {
359 goto fail;
360 }
361
362 // YD internal databases do not get global lock!
363 if (tdb->methods->tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1) == -1)
364 goto fail;
365
366 internal:
367 /* Internal (memory-only) databases skip all the code above to
368 * do with disk files, and resume here by releasing their
369 * global lock and hooking into the active list. */
370 tdb->next = tdbs;
371 tdbs = tdb;
372 return tdb;
373
374 fail:
375 { int save_errno = errno;
376 tdb->methods->tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1);
377
378 if (!tdb)
379 return NULL;
380
381 if (tdb->map_ptr) {
382 if (tdb->flags & TDB_INTERNAL)
383 SAFE_FREE(tdb->map_ptr);
384 else
385 tdb_munmap(tdb);
386 }
387 SAFE_FREE(tdb->name);
388#ifdef __OS2__
389 DosCloseMutexSem( tdb->hGlobalLock);
390 tdb->hGlobalLock = 0;
391 DosCloseMutexSem( tdb->hActiveLock);
392 tdb->hActiveLock = 0;
393 DosCloseMutexSem( tdb->hTransactionLock);
394 tdb->hTransactionLock = 0;
395#endif
396 if (tdb->fd != -1)
397 if (close(tdb->fd) != 0)
398 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: failed to close tdb->fd on error!\n"));
399 SAFE_FREE(tdb);
400 errno = save_errno;
401 return NULL;
402 }
403}
404
405/*
406 * Set the maximum number of dead records per hash chain
407 */
408
409void tdb_set_max_dead(struct tdb_context *tdb, int max_dead)
410{
411 tdb->max_dead_records = max_dead;
412}
413
414/**
415 * Close a database.
416 *
417 * @returns -1 for error; 0 for success.
418 **/
419int tdb_close(struct tdb_context *tdb)
420{
421 struct tdb_context **i;
422 int ret = 0;
423
424 if (tdb->transaction) {
425 tdb_transaction_cancel(tdb);
426 }
427
428 if (tdb->map_ptr) {
429 if (tdb->flags & TDB_INTERNAL)
430 SAFE_FREE(tdb->map_ptr);
431 else
432 tdb_munmap(tdb);
433 }
434 SAFE_FREE(tdb->name);
435 // YD internal databases do not have a global lock
436 if (!(tdb->flags & TDB_INTERNAL))
437 tdb->methods->tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLK, 0, 1);
438 if (tdb->fd != -1)
439 ret = close(tdb->fd);
440 SAFE_FREE(tdb->lockrecs);
441#ifdef __OS2__
442 DosCloseMutexSem( tdb->hGlobalLock);
443 tdb->hGlobalLock = 0;
444 DosCloseMutexSem( tdb->hActiveLock);
445 tdb->hActiveLock = 0;
446 DosCloseMutexSem( tdb->hTransactionLock);
447 tdb->hTransactionLock = 0;
448#endif
449
450 /* Remove from contexts list */
451 for (i = &tdbs; *i; i = &(*i)->next) {
452 if (*i == tdb) {
453 *i = tdb->next;
454 break;
455 }
456 }
457
458 memset(tdb, 0, sizeof(*tdb));
459 SAFE_FREE(tdb);
460
461 return ret;
462}
463
464/* register a loging function */
465void tdb_set_logging_function(struct tdb_context *tdb,
466 const struct tdb_logging_context *log_ctx)
467{
468 tdb->log = *log_ctx;
469}
470
471void *tdb_get_logging_private(struct tdb_context *tdb)
472{
473 return tdb->log.log_private;
474}
475
476/* reopen a tdb - this can be used after a fork to ensure that we have an independent
477 seek pointer from our parent and to re-establish locks */
478int tdb_reopen(struct tdb_context *tdb)
479{
480 struct stat st;
481
482 if (tdb->flags & TDB_INTERNAL) {
483 return 0; /* Nothing to do. */
484 }
485
486#ifdef __OS2__
487
488 DosCloseMutexSem( tdb->hGlobalLock);
489 tdb->hGlobalLock = 0;
490 DosCloseMutexSem( tdb->hActiveLock);
491 tdb->hActiveLock = 0;
492 DosCloseMutexSem( tdb->hTransactionLock);
493 tdb->hTransactionLock = 0;
494
495 if (!(tdb->flags & TDB_INTERNAL))
496 {
497 char szSem[_MAX_PATH];
498 char drive[_MAX_DRIVE], dir[_MAX_DIR];
499 char fname[_MAX_FNAME], ext[_MAX_EXT];
500 APIRET rc;
501 // extract path info
502 _splitpath( tdb->name, drive, dir, fname, ext);
503 sprintf( szSem, "\\SEM32\\TDB_GL_%s%s%s", dir, fname, ext);
504 rc = DosCreateMutexSem( szSem, &tdb->hGlobalLock, 0, FALSE);
505 if (rc == ERROR_DUPLICATE_NAME)
506 rc = DosOpenMutexSem( szSem, &tdb->hGlobalLock);
507 if (rc != NO_ERROR) {
508 printf( "cannot open %s %d\n", szSem, rc);
509 errno = EINVAL;
510 goto fail;
511 }
512 TDB_LOG((tdb, TDB_DEBUG_TRACE,"tdb_reopen pid %d global handle %d\n", getpid(), tdb->hGlobalLock));
513 sprintf( szSem, "\\SEM32\\TDB_AL_%s%s%s", dir, fname, ext);
514 rc = DosCreateMutexSem( szSem, &tdb->hActiveLock, 0, FALSE);
515 if (rc == ERROR_DUPLICATE_NAME)
516 rc = DosOpenMutexSem( szSem, &tdb->hActiveLock);
517 if (rc != NO_ERROR) {
518 printf( "cannot open %s %d\n", szSem, rc);
519 errno = EINVAL;
520 goto fail;
521 }
522 TDB_LOG((tdb, TDB_DEBUG_TRACE,"tdb_reopen pid %d active handle %d\n", getpid(), tdb->hActiveLock));
523 sprintf( szSem, "\\SEM32\\TDB_TL_%s%s%s", dir, fname, ext);
524 rc = DosCreateMutexSem( szSem, &tdb->hTransactionLock, 0, FALSE);
525 if (rc == ERROR_DUPLICATE_NAME)
526 rc = DosOpenMutexSem( szSem, &tdb->hTransactionLock);
527 if (rc != NO_ERROR) {
528 printf( "cannot open %s %d\n", szSem, rc);
529 errno = EINVAL;
530 goto fail;
531 }
532 TDB_LOG((tdb, TDB_DEBUG_TRACE,"tdb_reopen pid %d transaction handle %d\n", getpid(), tdb->hTransactionLock));
533 }
534#endif
535 if (tdb->num_locks != 0 || tdb->global_lock.count) {
536 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_reopen: reopen not allowed with locks held\n"));
537 goto fail;
538 }
539
540 if (tdb->transaction != 0) {
541 TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_reopen: reopen not allowed inside a transaction\n"));
542 goto fail;
543 }
544
545 if (tdb_munmap(tdb) != 0) {
546 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: munmap failed (%s)\n", strerror(errno)));
547 goto fail;
548 }
549 if (close(tdb->fd) != 0)
550 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: WARNING closing tdb->fd failed!\n"));
551 tdb->fd = open(tdb->name, tdb->open_flags & ~(O_CREAT|O_TRUNC), 0);
552 if (tdb->fd == -1) {
553 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: open failed (%s)\n", strerror(errno)));
554 goto fail;
555 }
556 if ((tdb->flags & TDB_CLEAR_IF_FIRST) &&
557 (tdb->methods->tdb_brlock(tdb, ACTIVE_LOCK, F_RDLCK, F_SETLKW, 0, 1) == -1)) {
558 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: failed to obtain active lock\n"));
559 goto fail;
560 }
561 if (fstat(tdb->fd, &st) != 0) {
562 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: fstat failed (%s)\n", strerror(errno)));
563 goto fail;
564 }
565 if (st.st_ino != tdb->inode || st.st_dev != tdb->device) {
566 TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_reopen: file dev/inode has changed!\n"));
567 goto fail;
568 }
569 tdb_mmap(tdb);
570
571 return 0;
572
573fail:
574 tdb_close(tdb);
575 return -1;
576}
577
578/* reopen all tdb's */
579int tdb_reopen_all(int parent_longlived)
580{
581 struct tdb_context *tdb;
582
583 for (tdb=tdbs; tdb; tdb = tdb->next) {
584 /*
585 * If the parent is longlived (ie. a
586 * parent daemon architecture), we know
587 * it will keep it's active lock on a
588 * tdb opened with CLEAR_IF_FIRST. Thus
589 * for child processes we don't have to
590 * add an active lock. This is essential
591 * to improve performance on systems that
592 * keep POSIX locks as a non-scalable data
593 * structure in the kernel.
594 */
595 if (parent_longlived) {
596 /* Ensure no clear-if-first. */
597 tdb->flags &= ~TDB_CLEAR_IF_FIRST;
598 }
599
600 if (tdb_reopen(tdb) != 0)
601 return -1;
602 }
603
604 return 0;
605}
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