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/*
Unix SMB/CIFS implementation.
Implementation of a reliable server_exists()
Copyright (C) Volker Lendecke 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "lib/util/server_id.h"
#include "serverid.h"
#include "lib/param/param.h"
#include "ctdbd_conn.h"
#include "lib/messages_ctdb.h"
#include "lib/messaging/messages_dgm.h"
static bool serverid_exists_local(const struct server_id *id)
{
bool exists = process_exists_by_pid(id->pid);
uint64_t unique;
int ret;
if (!exists) {
return false;
}
if (id->unique_id == SERVERID_UNIQUE_ID_NOT_TO_VERIFY) {
return true;
}
ret = messaging_dgm_get_unique(id->pid, &unique);
if (ret != 0) {
return false;
}
return (unique == id->unique_id);
}
bool serverid_exists(const struct server_id *id)
{
if (procid_is_local(id)) {
return serverid_exists_local(id);
}
if (lp_clustering()) {
return ctdbd_process_exists(messaging_ctdb_connection(),
id->vnn, id->pid, id->unique_id);
}
return false;
}
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