+ /*
+ Trivial Database 2: fetch, store and misc routines.
+ Copyright (C) Rusty Russell 2010
+
+ 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 "private.h"
#include <ccan/asprintf/asprintf.h>
#include <stdarg.h>
ecode = add_free_record(tdb, old_off,
sizeof(struct tdb_used_record)
+ key.dsize + old_room,
- TDB_LOCK_WAIT);
+ TDB_LOCK_WAIT, true);
if (ecode == TDB_SUCCESS)
ecode = replace_in_hash(tdb, h, new_off);
} else {
}
new_off += sizeof(struct tdb_used_record);
- ecode = tdb->methods->twrite(tdb, new_off, key.dptr, key.dsize);
+ ecode = tdb->tdb2.io->twrite(tdb, new_off, key.dptr, key.dsize);
if (ecode != TDB_SUCCESS) {
return ecode;
}
new_off += key.dsize;
- ecode = tdb->methods->twrite(tdb, new_off, dbuf.dptr, dbuf.dsize);
+ ecode = tdb->tdb2.io->twrite(tdb, new_off, dbuf.dptr, dbuf.dsize);
if (ecode != TDB_SUCCESS) {
return ecode;
}
{
enum TDB_ERROR ecode;
- ecode = tdb->methods->twrite(tdb, off, dbuf.dptr, dbuf.dsize);
+ ecode = tdb->tdb2.io->twrite(tdb, off, dbuf.dptr, dbuf.dsize);
if (ecode == TDB_SUCCESS && extra) {
/* Put a zero in; future versions may append other data. */
- ecode = tdb->methods->twrite(tdb, off + dbuf.dsize, "", 1);
+ ecode = tdb->tdb2.io->twrite(tdb, off + dbuf.dsize, "", 1);
}
if (tdb->flags & TDB_SEQNUM)
tdb_inc_seqnum(tdb);
struct tdb_used_record rec;
enum TDB_ERROR ecode;
+ if (tdb->flags & TDB_VERSION1) {
+ if (tdb1_store(tdb, key, dbuf, flag) == -1)
+ return tdb->last_error;
+ return TDB_SUCCESS;
+ }
+
off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
return tdb->last_error = off;
struct tdb_data new_dbuf;
enum TDB_ERROR ecode;
+ if (tdb->flags & TDB_VERSION1) {
+ if (tdb1_append(tdb, key, dbuf) == -1)
+ return tdb->last_error;
+ return TDB_SUCCESS;
+ }
+
off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
return tdb->last_error = off;
+ dbuf.dsize));
goto out;
}
- ecode = tdb->methods->tread(tdb, off + sizeof(rec) + key.dsize,
+ ecode = tdb->tdb2.io->tread(tdb, off + sizeof(rec) + key.dsize,
newdata, old_dlen);
if (ecode != TDB_SUCCESS) {
goto out_free_newdata;
struct hash_info h;
enum TDB_ERROR ecode;
+ if (tdb->flags & TDB_VERSION1)
+ return tdb1_fetch(tdb, key, data);
+
off = find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
return tdb->last_error = off;
struct tdb_used_record rec;
struct hash_info h;
+ if (tdb->flags & TDB_VERSION1) {
+ return tdb1_exists(tdb, key);
+ }
+
off = find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
tdb->last_error = off;
struct hash_info h;
enum TDB_ERROR ecode;
+ if (tdb->flags & TDB_VERSION1) {
+ if (tdb1_delete(tdb, key) == -1)
+ return tdb->last_error;
+ return TDB_SUCCESS;
+ }
+
off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
return tdb->last_error = off;
+ rec_key_length(&rec)
+ rec_data_length(&rec)
+ rec_extra_padding(&rec),
- TDB_LOCK_WAIT);
+ TDB_LOCK_WAIT, true);
if (tdb->flags & TDB_SEQNUM)
tdb_inc_seqnum(tdb);
return tdb->flags;
}
+static bool inside_transaction(const struct tdb_context *tdb)
+{
+ if (tdb->flags & TDB_VERSION1)
+ return tdb->tdb1.transaction != NULL;
+ else
+ return tdb->tdb2.transaction != NULL;
+}
+
+static bool readonly_changable(struct tdb_context *tdb, const char *caller)
+{
+ if (inside_transaction(tdb)) {
+ tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL,
+ TDB_LOG_USE_ERROR,
+ "%s: can't change"
+ " TDB_RDONLY inside transaction",
+ caller);
+ return false;
+ }
+
+ if (tdb->file->allrecord_lock.count != 0
+ || tdb->file->num_lockrecs != 0) {
+ tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL,
+ TDB_LOG_USE_ERROR,
+ "%s: can't change"
+ " TDB_RDONLY holding locks",
+ caller);
+ return false;
+ }
+ return true;
+}
+
void tdb_add_flag(struct tdb_context *tdb, unsigned flag)
{
if (tdb->flags & TDB_INTERNAL) {
case TDB_ALLOW_NESTING:
tdb->flags |= TDB_ALLOW_NESTING;
break;
+ case TDB_RDONLY:
+ if (readonly_changable(tdb, "tdb_add_flag"))
+ tdb->flags |= TDB_RDONLY;
+ break;
default:
tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL,
TDB_LOG_USE_ERROR,
case TDB_ALLOW_NESTING:
tdb->flags &= ~TDB_ALLOW_NESTING;
break;
+ case TDB_RDONLY:
+ if ((tdb->open_flags & O_ACCMODE) == O_RDONLY) {
+ tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL,
+ TDB_LOG_USE_ERROR,
+ "tdb_remove_flag: can't"
+ " remove TDB_RDONLY on tdb"
+ " opened with O_RDONLY");
+ break;
+ }
+ if (readonly_changable(tdb, "tdb_remove_flag"))
+ tdb->flags &= ~TDB_RDONLY;
+ break;
default:
tdb->last_error = tdb_logerr(tdb, TDB_ERR_EINVAL,
TDB_LOG_USE_ERROR,
va_end(ap);
if (len < 0) {
- tdb->log_fn(tdb, TDB_LOG_ERROR,
+ tdb->log_fn(tdb, TDB_LOG_ERROR, TDB_ERR_OOM,
"out of memory formatting message:", tdb->log_data);
- tdb->log_fn(tdb, level, fmt, tdb->log_data);
+ tdb->log_fn(tdb, level, ecode, fmt, tdb->log_data);
} else {
- tdb->log_fn(tdb, level, message, tdb->log_data);
+ tdb->log_fn(tdb, level, ecode, message, tdb->log_data);
free(message);
}
errno = saved_errno;
struct hash_info h;
enum TDB_ERROR ecode;
+ if (tdb->flags & TDB_VERSION1) {
+ return tdb->last_error = tdb1_parse_record(tdb, key, parse,
+ data);
+ }
+
off = find_and_lock(tdb, key, F_RDLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
return tdb->last_error = off;