static int tdb_chainlock_with_timeout_internal( TDB_CONTEXT *tdb, TDB_DATA key, unsigned int timeout, int rw_type) { /* Allow tdb_chainlock to be interrupted by an alarm. */ int ret; gotalarm = 0; if (timeout) { CatchSignal(SIGALRM, gotalarm_sig); tdb_setalarm_sigptr(tdb, &gotalarm); alarm(timeout); } if (rw_type == F_RDLCK) ret = tdb_chainlock_read(tdb, key); else ret = tdb_chainlock(tdb, key); if (timeout) { alarm(0); tdb_setalarm_sigptr(tdb, NULL); CatchSignal(SIGALRM, SIG_IGN); if (gotalarm && (ret != 0)) { DEBUG(0,("tdb_chainlock_with_timeout_internal: alarm (%u) timed out for key %s in tdb %s\n", timeout, key.dptr, tdb_name(tdb))); /* TODO: If we time out waiting for a lock, it might * be nice to use F_GETLK to get the pid of the * process currently holding the lock and print that * as part of the debugging message. -- mbp */ return -1; } } return ret == 0 ? 0 : -1; }
int tdb_read_lock_bystring(struct tdb_context *tdb, const char *keyval) { TDB_DATA key = string_term_tdb_data(keyval); return tdb_chainlock_read(tdb, key); }