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samba-mirror/ctdb/libctdb/control.c
Rusty Russell 30f4d01df1 libctdb: uniform callbacks, _recv functions to pull out data.
This is a bit tricky for those cases where we need to do multiple or
zero I/Os (eg. attachdb and readrecordlock), but works well for the
simple cases.

(This used to be ctdb commit ebe4dd724338c156423cfdcc10a75b68c2084cde)
2010-05-24 13:17:36 +09:30

67 lines
1.9 KiB
C

/*
Misc control routines of libctdb
Copyright (C) Rusty Russell 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 <ctdb.h>
#include <ctdb_protocol.h>
#include "libctdb_private.h"
/* Remove type-safety macros. */
#undef ctdb_getrecmaster_send
#undef ctdb_getpnn_send
int ctdb_getrecmaster_recv(struct ctdb_request *req, uint32_t *recmaster)
{
struct ctdb_reply_control *reply;
reply = unpack_reply_control(req, CTDB_CONTROL_GET_RECMASTER);
if (!reply || reply->status == -1)
return -1;
*recmaster = reply->status;
return 0;
}
struct ctdb_request *ctdb_getrecmaster_send(struct ctdb_connection *ctdb,
uint32_t destnode,
ctdb_callback_t callback,
void *private_data)
{
return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_RECMASTER,
destnode, NULL, 0,
callback, private_data);
}
int ctdb_getpnn_recv(struct ctdb_request *req, uint32_t *pnn)
{
struct ctdb_reply_control *reply;
reply = unpack_reply_control(req, CTDB_CONTROL_GET_PNN);
if (!reply || reply->status == -1)
return -1;
*pnn = reply->status;
return 0;
}
struct ctdb_request *ctdb_getpnn_send(struct ctdb_connection *ctdb,
uint32_t destnode,
ctdb_callback_t callback,
void *private_data)
{
return new_ctdb_control_request(ctdb, CTDB_CONTROL_GET_PNN, destnode,
NULL, 0, callback, private_data);
}