/*
- * $Id: main.c,v 1.2 2005-04-28 20:49:48 bfernhomberg Exp $
+ * $Id: main.c,v 1.3 2009-03-31 11:40:26 franklahm Exp $
*
* Copyright (C) Joerg Lenneis 2003
* All Rights Reserved. See COPYING.
static void block_sigs_onoff(int block)
{
sigset_t set;
-
+
sigemptyset(&set);
sigaddset(&set, SIGINT);
sigaddset(&set, SIGTERM);
return;
}
-/*
- The dbd_XXX and comm_XXX functions all obey the same protocol for return values:
-
- 1: Success, if transactions are used commit.
- 0: Failure, but we continue to serve requests. If transactions are used abort/rollback.
- -1: Fatal error, either from the database or from the socket. Abort the transaction if applicable
- (which might fail as well) and then exit.
+/*
+ The dbd_XXX and comm_XXX functions all obey the same protocol for return values:
+
+ 1: Success, if transactions are used commit.
+ 0: Failure, but we continue to serve requests. If transactions are used abort/rollback.
+ -1: Fatal error, either from the database or from the socket. Abort the transaction if applicable
+ (which might fail as well) and then exit.
We always try to notify the client process about the outcome, the result field
of the cnid_dbd_rply structure contains further details.
- */
+*/
static int loop(struct db_param *dbp)
{
time_last_rqst = now;
if (dbp->nosync)
checkp_flags = DB_FORCE;
- else
+ else
checkp_flags = 0;
-
+
rqst.name = namebuf;
while (1) {
return -1;
now = time(NULL);
-
+
if (count > dbp->flush_frequency || now > time_next_flush) {
#ifdef CNID_BACKEND_DBD_TXN
if (dbif_txn_checkpoint(0, 0, checkp_flags) < 0)
block_sigs_onoff(1);
if (exit_sig)
return 0;
- if (dbp->idle_timeout && comm_nbe() <= 0 && (now - time_last_rqst) > dbp->idle_timeout)
- return 0;
- continue;
+ if (dbp->idle_timeout && comm_nbe() <= 0 && (now - time_last_rqst) > dbp->idle_timeout)
+ return 0;
+ continue;
}
/* We got a request */
- time_last_rqst = now;
+ time_last_rqst = now;
count++;
-
+
#ifdef CNID_BACKEND_DBD_TXN
- if (dbif_txn_begin() < 0)
+ if (dbif_txn_begin() < 0)
return -1;
#endif /* CNID_BACKEND_DBD_TXN */
- memset(&rply, 0, sizeof(rply));
+ memset(&rply, 0, sizeof(rply));
switch(rqst.op) {
/* ret gets set here */
case CNID_DBD_OP_OPEN:
case CNID_DBD_OP_CLOSE:
/* open/close are noops for now. */
- rply.namelen = 0;
+ rply.namelen = 0;
ret = 1;
break;
case CNID_DBD_OP_ADD:
LOG(log_error, logtype_cnid, "loop: unknown op %d", rqst.op);
ret = -1;
break;
- }
+ }
if ((cret = comm_snd(&rply)) < 0 || ret < 0) {
#ifdef CNID_BACKEND_DBD_TXN
}
#ifdef CNID_BACKEND_DBD_TXN
if (ret == 0 || cret == 0) {
- if (dbif_txn_abort() < 0)
+ if (dbif_txn_abort() < 0)
return -1;
} else {
- if (dbif_txn_commit() < 0)
+ if (dbif_txn_commit() < 0)
return -1;
}
#endif /* CNID_BACKEND_DBD_TXN */
LOG(log_error, logtype_cnid, "chdir to %s failed: %s", dir, strerror(errno));
exit(1);
}
-
+
if (stat(".", &st) < 0) {
LOG(log_error, logtype_cnid, "error in stat for %s: %s", dir, strerror(errno));
exit(1);
struct flock lock;
if ((lockfd = open(LOCKFILENAME, O_RDWR | O_CREAT, 0644)) < 0) {
- LOG(log_error, logtype_cnid, "main: error opening lockfile: %s", strerror(errno));
- exit(1);
+ LOG(log_error, logtype_cnid, "main: error opening lockfile: %s", strerror(errno));
+ exit(1);
}
-
+
lock.l_start = 0;
lock.l_whence = SEEK_SET;
lock.l_len = 0;
lock.l_type = F_WRLCK;
if (fcntl(lockfd, F_SETLK, &lock) < 0) {
- if (errno == EACCES || errno == EAGAIN) {
- exit(0);
- } else {
- LOG(log_error, logtype_cnid, "main: fcntl F_WRLCK lockfile: %s", strerror(errno));
- exit(1);
- }
+ if (errno == EACCES || errno == EAGAIN) {
+ exit(0);
+ } else {
+ LOG(log_error, logtype_cnid, "main: fcntl F_WRLCK lockfile: %s", strerror(errno));
+ exit(1);
+ }
}
-
+
return lockfd;
}
int err = 0;
int ret;
int lockfd, ctrlfd, clntfd;
- char *dir;
-
+ char *dir, *logconfig;
+
set_processname("cnid_dbd");
- syslog_setup(log_debug, logtype_default, logoption_ndelay | logoption_pid, logfacility_daemon);
-
- if (argc != 4) {
+
+ if (argc != 5) {
LOG(log_error, logtype_cnid, "main: not enough arguments");
exit(1);
}
dir = argv[1];
ctrlfd = atoi(argv[2]);
clntfd = atoi(argv[3]);
+ logconfig = strdup(argv[4]);
+ setuplog(logconfig);
switch_to_user(dir);
-
+
/* Before we do anything else, check if there is an instance of cnid_dbd
running already and silently exit if yes. */
lockfd = get_lock();
-
+
LOG(log_info, logtype_cnid, "Startup, DB dir %s", dir);
-
+
set_signal();
-
+
/* SIGINT and SIGTERM are always off, unless we get a return code of 0 from
comm_rcv (no requests for one second, see above in loop()). That means we
only shut down after one second of inactivity. */
exit(1);
if (dbif_env_init(dbp) < 0)
- exit(2); /* FIXME: same exit code as failure for dbif_open() */
-
+ exit(2); /* FIXME: same exit code as failure for dbif_open() */
+
#ifdef CNID_BACKEND_DBD_TXN
if (dbif_txn_begin() < 0)
- exit(6);
+ exit(6);
#endif
-
+
if (dbif_open(dbp, 0) < 0) {
#ifdef CNID_BACKEND_DBD_TXN
- dbif_txn_abort();
+ dbif_txn_abort();
#endif
dbif_close();
exit(2);
exit(2);
}
dbif_closedb();
- LOG(log_info, logtype_cnid, "main: re-opening, secondaries will be rebuilt. This may take some time");
+ LOG(log_info, logtype_cnid, "main: re-opening, secondaries will be rebuilt. This may take some time");
if (dbif_open(dbp, 1) < 0) {
- LOG(log_info, logtype_cnid, "main: re-opening databases failed");
+ LOG(log_info, logtype_cnid, "main: re-opening databases failed");
dbif_close();
exit(2);
}
- LOG(log_info, logtype_cnid, "main: rebuilt done");
+ LOG(log_info, logtype_cnid, "main: rebuilt done");
}
#endif
if (dbd_stamp() < 0) {
#ifdef CNID_BACKEND_DBD_TXN
- dbif_txn_abort();
+ dbif_txn_abort();
#endif
dbif_close();
exit(5);
}
#ifdef CNID_BACKEND_DBD_TXN
if (dbif_txn_commit() < 0)
- exit(6);
+ exit(6);
#endif
if (comm_init(dbp, ctrlfd, clntfd) < 0) {
if (dbif_close() < 0)
err++;
-
+
free_lock(lockfd);
-
+
if (err)
exit(4);
else if (exit_sig)
- LOG(log_info, logtype_cnid, "main: Exiting on signal %i", exit_sig);
+ LOG(log_info, logtype_cnid, "main: Exiting on signal %i", exit_sig);
else
- LOG(log_info, logtype_cnid, "main: Idle timeout, exiting");
-
+ LOG(log_info, logtype_cnid, "main: Idle timeout, exiting");
+
return 0;
}
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