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samba-mirror/ctdb/protocol/protocol_sock.c
Amitay Isaacs 1787a4b632 ctdb-protocol: Add a generic packet header
This will avoid duplication when new daemons (and new client-server
protocols) are created out of the main ctdb daemon.

Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
2017-09-01 08:52:07 +02:00

82 lines
1.9 KiB
C

/*
CTDB generic sock packet marshalling
Copyright (C) Amitay Isaacs 2017
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 "replace.h"
#include "system/network.h"
#include <talloc.h>
#include "protocol.h"
#include "protocol_private.h"
#include "protocol_api.h"
size_t sock_packet_header_len(struct sock_packet_header *in)
{
return ctdb_uint32_len(&in->length) +
ctdb_uint32_len(&in->reqid);
}
void sock_packet_header_push(struct sock_packet_header *in, uint8_t *buf,
size_t *npush)
{
size_t offset = 0, np;
ctdb_uint32_push(&in->length, buf+offset, &np);
offset += np;
ctdb_uint32_push(&in->reqid, buf+offset, &np);
offset += np;
*npush = offset;
}
int sock_packet_header_pull(uint8_t *buf, size_t buflen,
struct sock_packet_header *out, size_t *npull)
{
size_t offset = 0, np;
int ret;
ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->length, &np);
if (ret != 0) {
return ret;
}
offset += np;
ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->reqid, &np);
if (ret != 0) {
return ret;
}
offset += np;
*npull = offset;
return 0;
}
void sock_packet_header_set_reqid(struct sock_packet_header *h,
uint32_t reqid)
{
h->reqid = reqid;
}
void sock_packet_header_set_length(struct sock_packet_header *h,
uint32_t length)
{
h->length = length;
}