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https://github.com/samba-team/samba.git
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8b9f464420
Commit 19c82c19c0
changed the behaviour
of prctl_set_comment() so it now calls setproctitle(3bsd) by default.
In some Linux distributions (e.g. Rocky Linux 8.8), this results in
messages like this spamming the logs:
ctdbd: setproctitle not initialized, please either call setproctitle_init() or link against libbsd-ctor.
Most Samba daemons seem to call setproctitle_init(), so do it here.
In the longer term CTDB should also switch to using lib/util's
process_set_title(), like the rest of Samba, for more flexible process
names.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15479
Signed-off-by: Martin Schwenke <mschwenke@ddn.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Thu Sep 21 00:46:50 UTC 2023 on atb-devel-224
408 lines
9.4 KiB
C
408 lines
9.4 KiB
C
/*
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standalone ctdb daemon
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Copyright (C) Andrew Tridgell 2006
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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/filesys.h"
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#include "system/time.h"
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#include "system/wait.h"
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#include "system/network.h"
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#include "system/syslog.h"
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#include <popt.h>
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#include <talloc.h>
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/* Allow use of deprecated function tevent_loop_allow_nesting() */
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#define TEVENT_DEPRECATED
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#include <tevent.h>
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#include "lib/util/debug.h"
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#include "lib/util/samba_util.h"
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#include "ctdb_private.h"
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#include "common/reqid.h"
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#include "common/system.h"
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#include "common/common.h"
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#include "common/path.h"
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#include "common/logging.h"
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#include "common/logging_conf.h"
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#include "ctdb_config.h"
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int script_log_level;
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bool fast_start;
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/*
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called by the transport layer when a packet comes in
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*/
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static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
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{
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struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
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CTDB_INCREMENT_STAT(ctdb, node_packets_recv);
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/* up the counter for this source node, so we know its alive */
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if (ctdb_validate_pnn(ctdb, hdr->srcnode)) {
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/* as a special case, redirected calls don't increment the rx_cnt */
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if (hdr->operation != CTDB_REQ_CALL ||
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((struct ctdb_req_call_old *)hdr)->hopcount == 0) {
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ctdb->nodes[hdr->srcnode]->rx_cnt++;
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}
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}
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ctdb_input_pkt(ctdb, hdr);
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}
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static const struct ctdb_upcalls ctdb_upcalls = {
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.recv_pkt = ctdb_recv_pkt,
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.node_dead = ctdb_node_dead,
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.node_connected = ctdb_node_connected
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};
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static struct ctdb_context *ctdb_init(struct tevent_context *ev)
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{
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int ret;
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struct ctdb_context *ctdb;
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ctdb = talloc_zero(ev, struct ctdb_context);
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if (ctdb == NULL) {
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DBG_ERR("Memory error\n");
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return NULL;
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}
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ctdb->ev = ev;
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/* Wrap early to exercise code. */
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ret = reqid_init(ctdb, INT_MAX-200, &ctdb->idr);
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if (ret != 0) {
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D_ERR("reqid_init failed (%s)\n", strerror(ret));
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talloc_free(ctdb);
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return NULL;
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}
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ret = srvid_init(ctdb, &ctdb->srv);
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if (ret != 0) {
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D_ERR("srvid_init failed (%s)\n", strerror(ret));
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talloc_free(ctdb);
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return NULL;
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}
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ctdb->daemon.name = path_socket(ctdb, "ctdbd");
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if (ctdb->daemon.name == NULL) {
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DBG_ERR("Memory allocation error\n");
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talloc_free(ctdb);
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return NULL;
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}
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ctdbd_pidfile = path_pidfile(ctdb, "ctdbd");
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if (ctdbd_pidfile == NULL) {
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DBG_ERR("Memory allocation error\n");
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talloc_free(ctdb);
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return NULL;
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}
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gettimeofday(&ctdb->ctdbd_start_time, NULL);
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gettimeofday(&ctdb->last_recovery_started, NULL);
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gettimeofday(&ctdb->last_recovery_finished, NULL);
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ctdb->recovery_mode = CTDB_RECOVERY_NORMAL;
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ctdb->upcalls = &ctdb_upcalls;
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ctdb->statistics.statistics_start_time = timeval_current();
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ctdb->capabilities = CTDB_CAP_DEFAULT;
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/*
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* Initialise this node's PNN to the unknown value. This will
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* be set to the correct value by either ctdb_add_node() as
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* part of loading the nodes file or by
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* ctdb_tcp_listen_automatic() when the transport is
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* initialised. At some point we should de-optimise this and
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* pull it out into ctdb_start_daemon() so it is done clearly
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* and only in one place.
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*/
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ctdb->pnn = CTDB_UNKNOWN_PNN;
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ctdb->do_checkpublicip = true;
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return ctdb;
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}
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/*
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main program
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*/
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int main(int argc, const char *argv[])
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{
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struct ctdb_context *ctdb = NULL;
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int interactive_opt = 0;
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bool interactive = false;
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struct poptOption popt_options[] = {
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POPT_AUTOHELP
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{ "interactive", 'i', POPT_ARG_NONE, &interactive_opt, 0,
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"don't fork, log to stderr", NULL },
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POPT_TABLEEND
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};
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int opt, ret;
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const char **extra_argv;
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poptContext pc;
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struct tevent_context *ev;
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const char *ctdb_base;
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struct conf_context *conf;
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const char *logging_location;
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const char *test_mode;
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bool ok;
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setproctitle_init(argc, discard_const(argv), environ);
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/*
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* Basic setup
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*/
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talloc_enable_null_tracking();
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fault_setup();
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ev = tevent_context_init(NULL);
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if (ev == NULL) {
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fprintf(stderr, "tevent_context_init() failed\n");
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exit(1);
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}
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tevent_loop_allow_nesting(ev);
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ctdb = ctdb_init(ev);
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if (ctdb == NULL) {
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fprintf(stderr, "Failed to init ctdb\n");
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exit(1);
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}
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/* Default value for CTDB_BASE - don't override */
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setenv("CTDB_BASE", CTDB_ETCDIR, 0);
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ctdb_base = getenv("CTDB_BASE");
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if (ctdb_base == NULL) {
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D_ERR("CTDB_BASE not set\n");
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exit(1);
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}
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/*
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* Command-line option handling
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*/
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pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
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while ((opt = poptGetNextOpt(pc)) != -1) {
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switch (opt) {
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default:
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fprintf(stderr, "Invalid option %s: %s\n",
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poptBadOption(pc, 0), poptStrerror(opt));
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goto fail;
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}
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}
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/* If there are extra arguments then exit with usage message */
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extra_argv = poptGetArgs(pc);
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if (extra_argv) {
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extra_argv++;
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if (extra_argv[0]) {
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poptPrintHelp(pc, stdout, 0);
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goto fail;
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}
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}
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interactive = (interactive_opt != 0);
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/*
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* Configuration file handling
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*/
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ret = ctdbd_config_load(ctdb, &conf);
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if (ret != 0) {
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/* ctdbd_config_load() logs the failure */
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goto fail;
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}
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/*
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* Logging setup/options
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*/
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test_mode = getenv("CTDB_TEST_MODE");
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/* Log to stderr (ignoring configuration) when running as interactive */
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if (interactive) {
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logging_location = "file:";
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setenv("CTDB_INTERACTIVE", "true", 1);
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} else {
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logging_location = logging_conf_location(conf);
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}
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if (strcmp(logging_location, "syslog") != 0 && test_mode == NULL) {
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/* This can help when CTDB logging is misconfigured */
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syslog(LOG_DAEMON|LOG_NOTICE,
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"CTDB logging to location %s",
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logging_location);
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}
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/* Initialize logging and set the debug level */
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ok = ctdb_logging_init(ctdb,
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logging_location,
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logging_conf_log_level(conf));
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if (!ok) {
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goto fail;
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}
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setenv("CTDB_LOGGING", logging_location, 1);
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setenv("CTDB_DEBUGLEVEL", debug_level_to_string(DEBUGLEVEL), 1);
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script_log_level = debug_level_from_string(
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ctdb_config.script_log_level);
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D_NOTICE("CTDB starting on node\n");
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/*
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* Cluster setup/options
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*/
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ret = ctdb_set_transport(ctdb, ctdb_config.transport);
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if (ret == -1) {
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D_ERR("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
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goto fail;
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}
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if (ctdb_config.cluster_lock != NULL) {
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ctdb->recovery_lock = ctdb_config.cluster_lock;
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} else if (ctdb_config.recovery_lock != NULL) {
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ctdb->recovery_lock = ctdb_config.recovery_lock;
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} else {
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D_WARNING("Cluster lock not set\n");
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}
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/* tell ctdb what address to listen on */
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if (ctdb_config.node_address) {
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ret = ctdb_set_address(ctdb, ctdb_config.node_address);
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if (ret == -1) {
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D_ERR("ctdb_set_address failed - %s\n",
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ctdb_errstr(ctdb));
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goto fail;
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}
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}
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/* tell ctdb what nodes are available */
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ctdb->nodes_file = talloc_asprintf(ctdb, "%s/nodes", ctdb_base);
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if (ctdb->nodes_file == NULL) {
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DBG_ERR(" Out of memory\n");
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goto fail;
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}
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ctdb_load_nodes_file(ctdb);
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/*
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* Database setup/options
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*/
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ctdb->db_directory = ctdb_config.dbdir_volatile;
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ok = directory_exist(ctdb->db_directory);
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if (! ok) {
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D_ERR("Volatile database directory %s does not exist\n",
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ctdb->db_directory);
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goto fail;
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}
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ctdb->db_directory_persistent = ctdb_config.dbdir_persistent;
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ok = directory_exist(ctdb->db_directory_persistent);
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if (! ok) {
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D_ERR("Persistent database directory %s does not exist\n",
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ctdb->db_directory_persistent);
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goto fail;
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}
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ctdb->db_directory_state = ctdb_config.dbdir_state;
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ok = directory_exist(ctdb->db_directory_state);
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if (! ok) {
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D_ERR("State database directory %s does not exist\n",
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ctdb->db_directory_state);
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goto fail;
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}
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if (ctdb_config.lock_debug_script != NULL) {
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ret = setenv("CTDB_DEBUG_LOCKS",
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ctdb_config.lock_debug_script,
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1);
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if (ret != 0) {
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D_ERR("Failed to set up lock debugging (%s)\n",
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strerror(errno));
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goto fail;
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}
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}
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/*
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* Legacy setup/options
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*/
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ctdb->start_as_disabled = (int)ctdb_config.start_as_disabled;
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ctdb->start_as_stopped = (int)ctdb_config.start_as_stopped;
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/* set ctdbd capabilities */
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if (!ctdb_config.lmaster_capability) {
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ctdb->capabilities &= ~CTDB_CAP_LMASTER;
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}
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if (!ctdb_config.leader_capability) {
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ctdb->capabilities &= ~CTDB_CAP_RECMASTER;
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}
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ctdb->do_setsched = ctdb_config.realtime_scheduling;
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/*
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* Miscellaneous setup
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*/
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ctdb_tunables_load(ctdb);
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ctdb->event_script_dir = talloc_asprintf(ctdb,
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"%s/events/legacy",
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ctdb_base);
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if (ctdb->event_script_dir == NULL) {
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DBG_ERR("Out of memory\n");
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goto fail;
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}
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ctdb->notification_script = talloc_asprintf(ctdb,
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"%s/notify.sh",
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ctdb_base);
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if (ctdb->notification_script == NULL) {
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D_ERR("Unable to set notification script\n");
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goto fail;
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}
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/*
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* Testing and debug options
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*/
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if (test_mode != NULL) {
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ctdb->do_setsched = false;
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ctdb->do_checkpublicip = false;
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fast_start = true;
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}
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/* start the protocol running (as a child) */
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return ctdb_start_daemon(ctdb, interactive, test_mode != NULL);
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fail:
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talloc_free(ctdb);
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exit(1);
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}
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