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https://github.com/samba-team/samba.git
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97184a8d46
Signed-off-by: Amitay Isaacs <amitay@gmail.com> Reviewed-by: Martin Schwenke <martin@meltin.net>
170 lines
3.8 KiB
C
170 lines
3.8 KiB
C
/*
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CTDB protocol marshalling
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Copyright (C) Amitay Isaacs 2015
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "replace.h"
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#include "system/network.h"
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#include <talloc.h>
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#include <tdb.h>
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#include "protocol.h"
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#include "protocol_api.h"
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#include "protocol_private.h"
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int ctdb_req_header_verify(struct ctdb_req_header *h, uint32_t operation)
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{
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if (h->length < sizeof(struct ctdb_req_header)) {
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return EMSGSIZE;
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}
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if (h->ctdb_magic != CTDB_MAGIC) {
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return EPROTO;
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}
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if (h->ctdb_version != CTDB_PROTOCOL) {
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return EPROTO;
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}
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if (operation != 0 && h->operation != operation) {
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return EPROTO;
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}
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return 0;
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}
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void ctdb_req_header_fill(struct ctdb_req_header *h, uint32_t generation,
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uint32_t operation, uint32_t destnode,
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uint32_t srcnode, uint32_t reqid)
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{
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h->length = sizeof(struct ctdb_req_header);
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h->ctdb_magic = CTDB_MAGIC;
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h->ctdb_version = CTDB_PROTOCOL;
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h->generation = generation;
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h->operation = operation;
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h->destnode = destnode;
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h->srcnode = srcnode;
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h->reqid = reqid;
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}
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size_t ctdb_req_header_len(struct ctdb_req_header *in)
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{
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return ctdb_uint32_len(&in->length) +
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ctdb_uint32_len(&in->ctdb_magic) +
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ctdb_uint32_len(&in->ctdb_version) +
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ctdb_uint32_len(&in->generation) +
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ctdb_uint32_len(&in->operation) +
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ctdb_uint32_len(&in->destnode) +
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ctdb_uint32_len(&in->srcnode) +
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ctdb_uint32_len(&in->reqid);
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}
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void ctdb_req_header_push(struct ctdb_req_header *in, uint8_t *buf,
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size_t *npush)
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{
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size_t offset = 0, np;
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ctdb_uint32_push(&in->length, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->ctdb_magic, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->ctdb_version, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->generation, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->operation, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->destnode, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->srcnode, buf+offset, &np);
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offset += np;
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ctdb_uint32_push(&in->reqid, buf+offset, &np);
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offset += np;
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*npush = offset;
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}
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int ctdb_req_header_pull(uint8_t *buf, size_t buflen,
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struct ctdb_req_header *out, size_t *npull)
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{
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size_t offset = 0, np;
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int ret;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->length, &np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->ctdb_magic,
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&np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->ctdb_version,
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&np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->generation,
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&np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->operation,
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&np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->destnode, &np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->srcnode, &np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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ret = ctdb_uint32_pull(buf+offset, buflen-offset, &out->reqid, &np);
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if (ret != 0) {
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return ret;
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}
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offset += np;
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*npull = offset;
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return 0;
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}
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