Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 485 insertions, 0 deletions

diff --git a/ctdb/protocol/protocol_message.c b/ctdb/protocol/protocol_message.c
new file mode 100644
index 0000000..8d32322
--- /dev/null
+++ b/ctdb/protocol/protocol_message.c
@@ -0,0 +1,485 @@
+/*
+   CTDB protocol marshalling
+
+   Copyright (C) Amitay Isaacs  2015
+
+   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 <tdb.h>
+
+#include "protocol.h"
+#include "protocol_api.h"
+#include "protocol_private.h"
+
+
+static size_t ctdb_message_data_len(union ctdb_message_data *mdata,
+				    uint64_t srvid)
+{
+	size_t len = 0;
+
+	switch (srvid) {
+	case CTDB_SRVID_BANNING:
+		len = ctdb_uint32_len(&mdata->pnn);
+		break;
+
+	case CTDB_SRVID_ELECTION:
+		len = ctdb_election_message_len(mdata->election);
+		break;
+
+	case CTDB_SRVID_LEADER:
+		len = ctdb_uint32_len(&mdata->pnn);
+		break;
+
+	case CTDB_SRVID_RECONFIGURE:
+		break;
+
+	case CTDB_SRVID_RELEASE_IP:
+		len = ctdb_string_len(&mdata->ipaddr);
+		break;
+
+	case CTDB_SRVID_TAKE_IP:
+		len = ctdb_string_len(&mdata->ipaddr);
+		break;
+
+	case CTDB_SRVID_IPREALLOCATED:
+		break;
+
+	case CTDB_SRVID_SET_NODE_FLAGS:
+		len = ctdb_node_flag_change_len(mdata->flag_change);
+		break;
+
+	case CTDB_SRVID_RECD_UPDATE_IP:
+		len = ctdb_public_ip_len(mdata->pubip);
+		break;
+
+	case CTDB_SRVID_VACUUM_FETCH:
+		len = ctdb_rec_buffer_len(mdata->recbuf);
+		break;
+
+	case CTDB_SRVID_DETACH_DATABASE:
+		len = ctdb_uint32_len(&mdata->db_id);
+		break;
+
+	case CTDB_SRVID_MEM_DUMP:
+		len = ctdb_srvid_message_len(mdata->msg);
+		break;
+
+	case CTDB_SRVID_GETLOG:
+		break;
+
+	case CTDB_SRVID_CLEARLOG:
+		break;
+
+	case CTDB_SRVID_PUSH_NODE_FLAGS:
+		len = ctdb_node_flag_change_len(mdata->flag_change);
+		break;
+
+	case CTDB_SRVID_RELOAD_NODES:
+		break;
+
+	case CTDB_SRVID_TAKEOVER_RUN:
+		len = ctdb_srvid_message_len(mdata->msg);
+		break;
+
+	case CTDB_SRVID_REBALANCE_NODE:
+		len = ctdb_uint32_len(&mdata->pnn);
+		break;
+
+	case CTDB_SRVID_DISABLE_TAKEOVER_RUNS:
+		len = ctdb_disable_message_len(mdata->disable);
+		break;
+
+	case CTDB_SRVID_DISABLE_RECOVERIES:
+		len = ctdb_disable_message_len(mdata->disable);
+		break;
+
+	case CTDB_SRVID_DISABLE_IP_CHECK:
+		len = ctdb_uint32_len(&mdata->timeout);
+		break;
+
+	default:
+		len = ctdb_tdb_data_len(&mdata->data);
+		break;
+	}
+
+	return len;
+}
+
+static void ctdb_message_data_push(union ctdb_message_data *mdata,
+				   uint64_t srvid, uint8_t *buf,
+				   size_t *npush)
+{
+	size_t np = 0;
+
+	switch (srvid) {
+	case CTDB_SRVID_BANNING:
+		ctdb_uint32_push(&mdata->pnn, buf, &np);
+		break;
+
+	case CTDB_SRVID_ELECTION:
+		ctdb_election_message_push(mdata->election, buf, &np);
+		break;
+
+	case CTDB_SRVID_LEADER:
+		ctdb_uint32_push(&mdata->pnn, buf, &np);
+		break;
+
+	case CTDB_SRVID_RECONFIGURE:
+		break;
+
+	case CTDB_SRVID_RELEASE_IP:
+		ctdb_string_push(&mdata->ipaddr, buf, &np);
+		break;
+
+	case CTDB_SRVID_TAKE_IP:
+		ctdb_string_push(&mdata->ipaddr, buf, &np);
+		break;
+
+	case CTDB_SRVID_IPREALLOCATED:
+		break;
+
+	case CTDB_SRVID_SET_NODE_FLAGS:
+		ctdb_node_flag_change_push(mdata->flag_change, buf, &np);
+		break;
+
+	case CTDB_SRVID_RECD_UPDATE_IP:
+		ctdb_public_ip_push(mdata->pubip, buf, &np);
+		break;
+
+	case CTDB_SRVID_VACUUM_FETCH:
+		ctdb_rec_buffer_push(mdata->recbuf, buf, &np);
+		break;
+
+	case CTDB_SRVID_DETACH_DATABASE:
+		ctdb_uint32_push(&mdata->db_id, buf, &np);
+		break;
+
+	case CTDB_SRVID_MEM_DUMP:
+		ctdb_srvid_message_push(mdata->msg, buf, &np);
+		break;
+
+	case CTDB_SRVID_GETLOG:
+		break;
+
+	case CTDB_SRVID_CLEARLOG:
+		break;
+
+	case CTDB_SRVID_PUSH_NODE_FLAGS:
+		ctdb_node_flag_change_push(mdata->flag_change, buf, &np);
+		break;
+
+	case CTDB_SRVID_RELOAD_NODES:
+		break;
+
+	case CTDB_SRVID_TAKEOVER_RUN:
+		ctdb_srvid_message_push(mdata->msg, buf, &np);
+		break;
+
+	case CTDB_SRVID_REBALANCE_NODE:
+		ctdb_uint32_push(&mdata->pnn, buf, &np);
+		break;
+
+	case CTDB_SRVID_DISABLE_TAKEOVER_RUNS:
+		ctdb_disable_message_push(mdata->disable, buf, &np);
+		break;
+
+	case CTDB_SRVID_DISABLE_RECOVERIES:
+		ctdb_disable_message_push(mdata->disable, buf, &np);
+		break;
+
+	case CTDB_SRVID_DISABLE_IP_CHECK:
+		ctdb_uint32_push(&mdata->timeout, buf, &np);
+		break;
+
+	default:
+		ctdb_tdb_data_push(&mdata->data, buf, &np);
+		break;
+	}
+
+	*npush = np;
+}
+
+static int ctdb_message_data_pull(uint8_t *buf, size_t buflen,
+				  uint64_t srvid, TALLOC_CTX *mem_ctx,
+				  union ctdb_message_data *mdata,
+				  size_t *npull)
+{
+	int ret = 0;
+	size_t np = 0;
+
+	switch (srvid) {
+	case CTDB_SRVID_BANNING:
+		ret = ctdb_uint32_pull(buf, buflen, &mdata->pnn, &np);
+		break;
+
+	case CTDB_SRVID_ELECTION:
+		ret = ctdb_election_message_pull(buf, buflen, mem_ctx,
+						 &mdata->election, &np);
+		break;
+
+	case CTDB_SRVID_LEADER:
+		ret = ctdb_uint32_pull(buf, buflen, &mdata->pnn, &np);
+		break;
+
+	case CTDB_SRVID_RECONFIGURE:
+		break;
+
+	case CTDB_SRVID_RELEASE_IP:
+		ret = ctdb_string_pull(buf, buflen, mem_ctx, &mdata->ipaddr,
+				       &np);
+		break;
+
+	case CTDB_SRVID_TAKE_IP:
+		ret = ctdb_string_pull(buf, buflen, mem_ctx, &mdata->ipaddr,
+				       &np);
+		break;
+
+	case CTDB_SRVID_IPREALLOCATED:
+		break;
+
+	case CTDB_SRVID_SET_NODE_FLAGS:
+		ret = ctdb_node_flag_change_pull(buf, buflen, mem_ctx,
+						 &mdata->flag_change, &np);
+		break;
+
+	case CTDB_SRVID_RECD_UPDATE_IP:
+		ret = ctdb_public_ip_pull(buf, buflen, mem_ctx,
+					  &mdata->pubip, &np);
+		break;
+
+	case CTDB_SRVID_VACUUM_FETCH:
+		ret = ctdb_rec_buffer_pull(buf, buflen, mem_ctx,
+					   &mdata->recbuf, &np);
+		break;
+
+	case CTDB_SRVID_DETACH_DATABASE:
+		ret = ctdb_uint32_pull(buf, buflen, &mdata->db_id, &np);
+		break;
+
+	case CTDB_SRVID_MEM_DUMP:
+		ret = ctdb_srvid_message_pull(buf, buflen, mem_ctx,
+					      &mdata->msg, &np);
+		break;
+
+	case CTDB_SRVID_GETLOG:
+		break;
+
+	case CTDB_SRVID_CLEARLOG:
+		break;
+
+	case CTDB_SRVID_PUSH_NODE_FLAGS:
+		ret = ctdb_node_flag_change_pull(buf, buflen, mem_ctx,
+						 &mdata->flag_change, &np);
+		break;
+
+	case CTDB_SRVID_RELOAD_NODES:
+		break;
+
+	case CTDB_SRVID_TAKEOVER_RUN:
+		ret = ctdb_srvid_message_pull(buf, buflen, mem_ctx,
+					      &mdata->msg, &np);
+		break;
+
+	case CTDB_SRVID_REBALANCE_NODE:
+		ret = ctdb_uint32_pull(buf, buflen, &mdata->pnn, &np);
+		break;
+
+	case CTDB_SRVID_DISABLE_TAKEOVER_RUNS:
+		ret = ctdb_disable_message_pull(buf, buflen, mem_ctx,
+						&mdata->disable, &np);
+		break;
+
+	case CTDB_SRVID_DISABLE_RECOVERIES:
+		ret = ctdb_disable_message_pull(buf, buflen, mem_ctx,
+						&mdata->disable, &np);
+		break;
+
+	case CTDB_SRVID_DISABLE_IP_CHECK:
+		ret = ctdb_uint32_pull(buf, buflen, &mdata->timeout, &np);
+		break;
+
+	default:
+		ret = ctdb_tdb_data_pull(buf, buflen, mem_ctx, &mdata->data,
+					 &np);
+		break;
+	}
+
+	if (ret != 0) {
+		return ret;
+	}
+
+	*npull = np;
+	return 0;
+}
+
+size_t ctdb_req_message_len(struct ctdb_req_header *h,
+			    struct ctdb_req_message *c)
+{
+	uint32_t u32 = ctdb_message_data_len(&c->data, c->srvid);
+
+	return ctdb_req_header_len(h) +
+		ctdb_uint64_len(&c->srvid) +
+		ctdb_uint32_len(&u32) + u32;
+}
+
+int ctdb_req_message_push(struct ctdb_req_header *h,
+			  struct ctdb_req_message *c,
+			  uint8_t *buf, size_t *buflen)
+{
+	size_t offset = 0, np;
+	size_t length;
+	uint32_t u32;
+
+	length = ctdb_req_message_len(h, c);
+	if (*buflen < length) {
+		*buflen = length;
+		return EMSGSIZE;
+	}
+
+	h->length = *buflen;
+	ctdb_req_header_push(h, buf+offset, &np);
+	offset += np;
+
+	ctdb_uint64_push(&c->srvid, buf+offset, &np);
+	offset += np;
+
+	u32 = ctdb_message_data_len(&c->data, c->srvid);
+	ctdb_uint32_push(&u32, buf+offset, &np);
+	offset += np;
+
+	ctdb_message_data_push(&c->data, c->srvid, buf+offset, &np);
+	offset += np;
+
+	return 0;
+}
+
+int ctdb_req_message_pull(uint8_t *buf, size_t buflen,
+			  struct ctdb_req_header *h,
+			  TALLOC_CTX *mem_ctx,
+			  struct ctdb_req_message *c)
+{
+	struct ctdb_req_header header;
+	size_t offset = 0, np;
+	uint32_t u32;
+	int ret;
+
+	ret = ctdb_req_header_pull(buf+offset, buflen-offset, &header, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	if (h != NULL) {
+		*h = header;
+	}
+
+	ret = ctdb_uint64_pull(buf+offset, buflen-offset, &c->srvid, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	ret = ctdb_uint32_pull(buf+offset, buflen-offset, &u32, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	if (buflen-offset < u32) {
+		return EMSGSIZE;
+	}
+
+	ret = ctdb_message_data_pull(buf+offset, u32, c->srvid,
+				     mem_ctx, &c->data, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	return ret;
+}
+
+size_t ctdb_req_message_data_len(struct ctdb_req_header *h,
+				 struct ctdb_req_message_data *c)
+{
+	return ctdb_req_header_len(h) +
+		ctdb_uint64_len(&c->srvid) +
+		ctdb_tdb_datan_len(&c->data);
+}
+
+int ctdb_req_message_data_push(struct ctdb_req_header *h,
+			       struct ctdb_req_message_data *c,
+			       uint8_t *buf, size_t *buflen)
+{
+	size_t offset = 0, np;
+	size_t length;
+
+	length = ctdb_req_message_data_len(h, c);
+	if (*buflen < length) {
+		*buflen = length;
+		return EMSGSIZE;
+	}
+
+	h->length = *buflen;
+	ctdb_req_header_push(h, buf+offset, &np);
+	offset += np;
+
+	ctdb_uint64_push(&c->srvid, buf+offset, &np);
+	offset += np;
+
+	ctdb_tdb_datan_push(&c->data, buf+offset, &np);
+	offset += np;
+
+	return 0;
+}
+
+int ctdb_req_message_data_pull(uint8_t *buf, size_t buflen,
+			       struct ctdb_req_header *h,
+			       TALLOC_CTX *mem_ctx,
+			       struct ctdb_req_message_data *c)
+{
+	struct ctdb_req_header header;
+	size_t offset = 0, np;
+	int ret;
+
+	ret = ctdb_req_header_pull(buf+offset, buflen-offset, &header, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	if (h != NULL) {
+		*h = header;
+	}
+
+	ret = ctdb_uint64_pull(buf+offset, buflen-offset, &c->srvid, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	ret = ctdb_tdb_datan_pull(buf+offset, buflen-offset,
+				  mem_ctx, &c->data, &np);
+	if (ret != 0) {
+		return ret;
+	}
+	offset += np;
+
+	return 0;
+}