/* -------------------- */
static int transmit(CNID_bdb_private *db, struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply)
{
time_t orig, t;
int clean = 1; /* no errors so far - to prevent sleep on first try */
while (1) {
if (db->fd == -1) {
LOG(log_maxdebug, logtype_cnid, "transmit: connecting to cnid_dbd ...");
if ((db->fd = init_tsock(db)) < 0) {
goto transmit_fail;
}
if (db->notfirst) {
LOG(log_debug7, logtype_cnid, "transmit: reconnected to cnid_dbd");
} else { /* db->notfirst == 0 */
db->notfirst = 1;
}
LOG(log_debug, logtype_cnid, "transmit: attached to '%s'", db->vol->v_localname);
}
if (!dbd_rpc(db, rqst, rply)) {
LOG(log_maxdebug, logtype_cnid, "transmit: {done}");
return 0;
}
transmit_fail:
if (db->fd != -1) {
close(db->fd);
db->fd = -1; /* FD not valid... will need to reconnect */
}
if (errno == ECONNREFUSED) { /* errno carefully injected in tsock_getfd */
/* give up */
LOG(log_error, logtype_cnid, "transmit: connection refused (volume %s)", db->vol->v_localname);
return -1;
}
if (!clean) { /* don't sleep if just got disconnected by cnid server */
time(&t);
if (t - orig > MAX_DELAY) {
LOG(log_error, logtype_cnid, "transmit: Request to dbd daemon (volume %s) timed out.", db->vol->v_localname);
return -1;
}
/* sleep a little before retry */
delay(1);
} else {
clean = 0; /* false... next time sleep */
time(&orig);
}
}
return -1;
}
/* -------------------- */
static int transmit(CNID_private *db, struct cnid_dbd_rqst *rqst, struct cnid_dbd_rply *rply)
{
time_t orig, t;
int clean = 1; /* no errors so far - to prevent sleep on first try */
if (db->changed) {
/* volume and db don't have the same timestamp
*/
return -1;
}
while (1) {
if (db->fd == -1) {
struct cnid_dbd_rqst rqst_stamp;
struct cnid_dbd_rply rply_stamp;
char stamp[ADEDLEN_PRIVSYN];
LOG(log_maxdebug, logtype_cnid, "transmit: connecting to cnid_dbd ...");
if ((db->fd = init_tsock(db)) < 0) {
goto transmit_fail;
}
dbd_initstamp(&rqst_stamp);
memset(stamp, 0, ADEDLEN_PRIVSYN);
rply_stamp.name = stamp;
rply_stamp.namelen = ADEDLEN_PRIVSYN;
if (dbd_rpc(db, &rqst_stamp, &rply_stamp) < 0)
goto transmit_fail;
if (dbd_reply_stamp(&rply_stamp ) < 0)
goto transmit_fail;
if (db->notfirst) {
LOG(log_debug7, logtype_cnid, "transmit: reconnected to cnid_dbd, comparing database stamps...");
if (memcmp(stamp, db->stamp, ADEDLEN_PRIVSYN)) {
LOG(log_error, logtype_cnid, "transmit: ... not the same db!");
db->changed = 1;
return -1;
}
LOG(log_debug7, logtype_cnid, "transmit: ... OK.");
} else { /* db->notfirst == 0 */
db->notfirst = 1;
if (db->client_stamp)
memcpy(db->client_stamp, stamp, ADEDLEN_PRIVSYN);
memcpy(db->stamp, stamp, ADEDLEN_PRIVSYN);
}
LOG(log_debug, logtype_cnid, "transmit: attached to '%s', stamp: '%08lx'.",
db->db_dir, *(uint64_t *)stamp);
}
if (!dbd_rpc(db, rqst, rply)) {
LOG(log_maxdebug, logtype_cnid, "transmit: {done}");
return 0;
}
transmit_fail:
if (db->fd != -1) {
close(db->fd);
db->fd = -1; /* FD not valid... will need to reconnect */
}
if (errno == ECONNREFUSED) { /* errno carefully injected in tsock_getfd */
/* give up */
LOG(log_error, logtype_cnid, "transmit: connection refused (db_dir %s)", db->db_dir);
return -1;
}
if (!clean) { /* don't sleep if just got disconnected by cnid server */
time(&t);
if (t - orig > MAX_DELAY) {
LOG(log_error, logtype_cnid, "transmit: Request to dbd daemon (db_dir %s) timed out.", db->db_dir);
return -1;
}
/* sleep a little before retry */
delay(1);
} else {
clean = 0; /* false... next time sleep */
time(&orig);
}
}
return -1;
}
