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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau421ed392021-01-06 17:41:32 +01003 * Copyright 2000-2021 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Ilya Shipitsin46a030c2020-07-05 16:36:08 +050010 * Please refer to RFC7230 - RFC7235 information about HTTP protocol, and
11 * RFC6265 for information about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
42#include <netdb.h>
43#include <fcntl.h>
44#include <errno.h>
45#include <signal.h>
46#include <stdarg.h>
47#include <sys/resource.h>
Tim Duesterhusdfad6a42020-04-18 16:02:47 +020048#include <sys/utsname.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
David Carlier5e4c8e22019-09-13 05:12:58 +010062#ifdef __APPLE__
63#include <mach/mach_types.h>
64#include <mach/thread_act.h>
65#include <mach/thread_policy.h>
66#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010067#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau636848a2019-04-15 19:38:50 +020069#if defined(USE_PRCTL)
70#include <sys/prctl.h>
71#endif
72
Willy Tarreaubaaee002006-06-26 02:48:02 +020073#ifdef DEBUG_FULL
74#include <assert.h>
75#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010076#if defined(USE_SYSTEMD)
77#include <systemd/sd-daemon.h>
78#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020079
Willy Tarreau6c3a6812020-03-06 18:57:15 +010080#include <import/sha1.h>
81
Willy Tarreaub2551052020-06-09 09:07:15 +020082#include <haproxy/acl.h>
Amaury Denoyelle68fd7e42021-03-25 17:15:52 +010083#include <haproxy/action.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020084#include <haproxy/activity.h>
85#include <haproxy/api.h>
86#include <haproxy/arg.h>
87#include <haproxy/auth.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020088#include <haproxy/base64.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020089#include <haproxy/capture-t.h>
Amaury Denoyelle5a6926d2021-03-30 17:34:24 +020090#include <haproxy/cfgdiag.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020091#include <haproxy/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020092#include <haproxy/chunk.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020093#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020094#include <haproxy/connection.h>
Amaury Denoyellea6f9c5d2021-04-23 16:58:08 +020095#ifdef USE_CPU_AFFINITY
Amaury Denoyelle982fb532021-04-21 18:39:58 +020096#include <haproxy/cpuset.h>
Amaury Denoyellea6f9c5d2021-04-23 16:58:08 +020097#endif
Willy Tarreaueb92deb2020-06-04 10:53:16 +020098#include <haproxy/dns.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020099#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +0200100#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200101#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +0200102#include <haproxy/filters.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200103#include <haproxy/global.h>
Willy Tarreau86416052020-06-04 09:20:54 +0200104#include <haproxy/hlua.h>
Willy Tarreauc761f842020-06-04 11:40:28 +0200105#include <haproxy/http_rules.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200106#include <haproxy/list.h>
Willy Tarreau213e9902020-06-04 14:58:24 +0200107#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +0200108#include <haproxy/log.h>
Willy Tarreaub5abe5b2020-06-04 14:07:37 +0200109#include <haproxy/mworker.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +0200110#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +0200111#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +0200112#include <haproxy/openssl-compat.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200113#include <haproxy/pattern.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +0200114#include <haproxy/peers.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200115#include <haproxy/pool.h>
116#include <haproxy/protocol.h>
Willy Tarreaubf3b06b2020-08-26 10:23:40 +0200117#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200118#include <haproxy/proxy.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +0200119#include <haproxy/regex.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200120#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +0200121#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +0200122#include <haproxy/session.h>
Willy Tarreau3727a8a2020-06-04 17:37:26 +0200123#include <haproxy/signal.h>
Willy Tarreau063d47d2020-08-28 16:29:53 +0200124#include <haproxy/sock.h>
Willy Tarreau25140cc2020-08-28 15:40:33 +0200125#include <haproxy/sock_inet.h>
Willy Tarreau209108d2020-06-04 20:30:20 +0200126#include <haproxy/ssl_sock.h>
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +0200127#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +0200128#include <haproxy/stream.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +0200129#include <haproxy/task.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +0200130#include <haproxy/thread.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200131#include <haproxy/time.h>
132#include <haproxy/tools.h>
133#include <haproxy/uri_auth-t.h>
Willy Tarreaua1718922020-06-04 16:25:31 +0200134#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200135#include <haproxy/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200136
Willy Tarreaubaaee002006-06-26 02:48:02 +0200137
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100138/* array of init calls for older platforms */
139DECLARE_INIT_STAGES;
140
Willy Tarreauf4596402021-04-10 16:53:05 +0200141/* create a read_mostly section to hold variables which are accessed a lot
142 * but which almost never change. The purpose is to isolate them in their
143 * own cache lines where they don't risk to be perturbated by write accesses
144 * to neighbor variables. We need to create an empty aligned variable for
145 * this. The fact that the variable is of size zero means that it will be
146 * eliminated at link time if no other variable uses it, but alignment will
147 * be respected.
148 */
149empty_t __read_mostly_align HA_SECTION("read_mostly") ALIGNED(64);
150
Willy Tarreau477ecd82010-01-03 21:12:30 +0100151/* list of config files */
152static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200153int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100154int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100155unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100156unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200157
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100158volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100159volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100160
Willy Tarreaubaaee002006-06-26 02:48:02 +0200161/* global options */
162struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100163 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100164 .nbproc = 1,
Amaury Denoyelle0f50cb92021-03-26 18:50:33 +0100165 .numa_cpu_mapping = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100166 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200167 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200168 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100169 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100170 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100171 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200172 .unix_bind = {
173 .ux = {
174 .uid = -1,
175 .gid = -1,
176 .mode = 0,
177 }
178 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200179 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100180 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100181 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100182 .maxrewrite = MAXREWRITE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100183 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200184 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200185 .pool_low_ratio = 20,
186 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200187 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200188#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100189 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200190#endif
William Lallemandf3747832012-11-09 12:33:10 +0100191 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100192#ifdef DEFAULT_IDLE_TIMER
193 .idle_timer = DEFAULT_IDLE_TIMER,
194#else
195 .idle_timer = 1000, /* 1 second */
196#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200197 },
Emeric Brun76d88952012-10-05 15:47:31 +0200198#ifdef USE_OPENSSL
199#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200200 .maxsslconn = DEFAULT_MAXSSLCONN,
201#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200202#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200203 /* others NULL OK */
204};
205
206/*********************************************************************/
207
208int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100209int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200210int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100211int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100212int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100213int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200214
Ilya Shipitsin46a030c2020-07-05 16:36:08 +0500215/* Here we store information about the pids of the processes we may pause
Willy Tarreaubaaee002006-06-26 02:48:02 +0200216 * or kill. We will send them a signal every 10 ms until we can bind to all
217 * our ports. With 200 retries, that's about 2 seconds.
218 */
219#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200220static int *oldpids = NULL;
221static int oldpids_sig; /* use USR1 or TERM */
222
Olivier Houchardf73629d2017-04-05 22:33:04 +0200223/* Path to the unix socket we use to retrieve listener sockets from the old process */
224static const char *old_unixsocket;
225
William Lallemand85b0bd92017-06-01 17:38:53 +0200226static char *cur_unixsocket = NULL;
227
William Lallemandcb11fd22017-06-01 17:38:52 +0200228int atexit_flag = 0;
229
Willy Tarreaubb545b42010-08-25 12:58:59 +0200230int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200231const int zero = 0;
232const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200233const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200234
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100235char hostname[MAX_HOSTNAME_LEN];
Dragan Dosen4f014152020-06-18 16:56:47 +0200236char *localpeer = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200237
William Lallemand00417412020-06-05 14:08:41 +0200238static char **old_argv = NULL; /* previous argv but cleaned up */
William Lallemand73b85e72017-06-01 17:38:51 +0200239
William Lallemandbc193052018-09-11 10:06:26 +0200240struct list proc_list = LIST_HEAD_INIT(proc_list);
241
242int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100243unsigned int rlim_fd_cur_at_boot = 0;
244unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200245
Willy Tarreau6c3a6812020-03-06 18:57:15 +0100246/* per-boot randomness */
247unsigned char boot_seed[20]; /* per-boot random seed (160 bits initially) */
248
William Lallemand16dd1b32018-11-19 18:46:18 +0100249struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200250
William Lallemandb3f2be32018-09-11 10:06:18 +0200251static void *run_thread_poll_loop(void *data);
252
Willy Tarreauff055502014-04-28 22:27:06 +0200253/* bitfield of a few warnings to emit just once (WARN_*) */
254unsigned int warned = 0;
255
William Lallemande7361152018-10-26 14:47:36 +0200256/* master CLI configuration (-S flag) */
257struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100258
259/* These are strings to be reported in the output of "haproxy -vv". They may
260 * either be constants (in which case must_free must be zero) or dynamically
261 * allocated strings to pass to free() on exit, and in this case must_free
262 * must be non-zero.
263 */
264struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
265struct build_opts_str {
266 struct list list;
267 const char *str;
268 int must_free;
269};
270
Willy Tarreaubaaee002006-06-26 02:48:02 +0200271/*********************************************************************/
272/* general purpose functions ***************************************/
273/*********************************************************************/
274
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100275/* used to register some build option strings at boot. Set must_free to
276 * non-zero if the string must be freed upon exit.
277 */
278void hap_register_build_opts(const char *str, int must_free)
279{
280 struct build_opts_str *b;
281
282 b = calloc(1, sizeof(*b));
283 if (!b) {
284 fprintf(stderr, "out of memory\n");
285 exit(1);
286 }
287 b->str = str;
288 b->must_free = must_free;
Willy Tarreau2b718102021-04-21 07:32:39 +0200289 LIST_APPEND(&build_opts_list, &b->list);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100290}
291
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100292static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200293{
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200294 struct utsname utsname;
295
Willy Tarreau08dd2022019-11-21 18:07:30 +0100296 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
297 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100298
299 if (strlen(PRODUCT_URL_BUGS) > 0) {
300 char base_version[20];
301 int dots = 0;
302 char *del;
303
304 /* only retrieve the base version without distro-specific extensions */
305 for (del = haproxy_version; *del; del++) {
306 if (*del == '.')
307 dots++;
308 else if (*del < '0' || *del > '9')
309 break;
310 }
311
312 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
313 if (dots < 2)
314 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
315 else
316 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
317 }
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200318
319 if (uname(&utsname) == 0) {
320 printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
321 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200322}
323
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100324static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100325{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100326 struct build_opts_str *item;
327
Willy Tarreau7b066db2007-12-02 11:28:59 +0100328 printf("Build options :"
329#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100330 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100331#endif
332#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100333 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100334#endif
335#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100336 "\n CC = " BUILD_CC
337#endif
338#ifdef BUILD_CFLAGS
339 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100340#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100341#ifdef BUILD_OPTIONS
342 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100343#endif
Tim Duesterhusc8d19702020-11-21 18:07:59 +0100344#ifdef BUILD_DEBUG
345 "\n DEBUG = " BUILD_DEBUG
346#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100347#ifdef BUILD_FEATURES
348 "\n\nFeature list : " BUILD_FEATURES
349#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200350 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100351 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200352 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100353 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200354
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100355 list_for_each_entry(item, &build_opts_list, list) {
356 puts(item->str);
357 }
358
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100359 putchar('\n');
360
Willy Tarreaube5b6852009-10-03 18:57:08 +0200361 list_pollers(stdout);
362 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200363 list_mux_proto(stdout);
364 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100365 list_services(stdout);
366 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100367 list_filters(stdout);
368 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100369}
370
Willy Tarreaubaaee002006-06-26 02:48:02 +0200371/*
372 * This function prints the command line usage and exits
373 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100374static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200375{
376 display_version();
377 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200378 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200379 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200380 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100381 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200382 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200383 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200384 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200385 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200386 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100387#if defined(USE_SYSTEMD)
388 " -Ws master-worker mode with systemd notify support.\n"
389#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200390 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200391 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100392 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200393 " -m limits the usable amount of memory (in MB)\n"
394 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200395 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200396 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200397#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200398 " -de disables epoll() usage even when available\n"
399#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200400#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200401 " -dk disables kqueue() usage even when available\n"
402#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200403#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000404 " -dv disables event ports usage even when available\n"
405#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200406#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200407 " -dp disables poll() usage even when available\n"
408#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200409#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100410 " -dS disables splice usage (broken on old kernels)\n"
411#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200412#if defined(USE_GETADDRINFO)
413 " -dG disables getaddrinfo() usage\n"
414#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000415#if defined(SO_REUSEPORT)
416 " -dR disables SO_REUSEPORT usage\n"
417#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100418 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100419 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200420 " -dW fails if any warning is emitted\n"
Amaury Denoyelle7b01a8d2021-03-29 10:29:07 +0200421 " -dD diagnostic mode : warn about suspicious configuration statements\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200422 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200423 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200424 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200425 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100426 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200427 exit(1);
428}
429
430
431
432/*********************************************************************/
433/* more specific functions ***************************************/
434/*********************************************************************/
435
William Lallemand73b85e72017-06-01 17:38:51 +0200436/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
437 * pids the signal was correctly delivered to.
438 */
William Lallemande25473c2019-04-01 11:29:56 +0200439int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200440{
441 int p;
442 int ret = 0;
443 for (p = 0; p < nb_oldpids; p++)
444 if (kill(oldpids[p], sig) == 0)
445 ret++;
446 return ret;
447}
448
William Lallemand75ea0a02017-11-15 19:02:58 +0100449/*
William Lallemand73b85e72017-06-01 17:38:51 +0200450 * remove a pid forom the olpid array and decrease nb_oldpids
451 * return 1 pid was found otherwise return 0
452 */
453
454int delete_oldpid(int pid)
455{
456 int i;
457
458 for (i = 0; i < nb_oldpids; i++) {
459 if (oldpids[i] == pid) {
460 oldpids[i] = oldpids[nb_oldpids - 1];
461 oldpids[nb_oldpids - 1] = 0;
462 nb_oldpids--;
463 return 1;
464 }
465 }
466 return 0;
467}
468
William Lallemand85b0bd92017-06-01 17:38:53 +0200469
470static void get_cur_unixsocket()
471{
472 /* if -x was used, try to update the stat socket if not available anymore */
Willy Tarreau4975d142021-03-13 11:00:33 +0100473 if (global.cli_fe) {
William Lallemand85b0bd92017-06-01 17:38:53 +0200474 struct bind_conf *bind_conf;
475
476 /* pass through all stats socket */
Willy Tarreau4975d142021-03-13 11:00:33 +0100477 list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
William Lallemand85b0bd92017-06-01 17:38:53 +0200478 struct listener *l;
479
480 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
481
Willy Tarreau37159062020-08-27 07:48:42 +0200482 if (l->rx.addr.ss_family == AF_UNIX &&
William Lallemand85b0bd92017-06-01 17:38:53 +0200483 (bind_conf->level & ACCESS_FD_LISTENERS)) {
484 const struct sockaddr_un *un;
485
Willy Tarreau37159062020-08-27 07:48:42 +0200486 un = (struct sockaddr_un *)&l->rx.addr;
William Lallemand85b0bd92017-06-01 17:38:53 +0200487 /* priority to old_unixsocket */
488 if (!cur_unixsocket) {
489 cur_unixsocket = strdup(un->sun_path);
490 } else {
Tim Duesterhuse5ff1412021-01-02 22:31:53 +0100491 if (old_unixsocket && strcmp(un->sun_path, old_unixsocket) == 0) {
William Lallemand85b0bd92017-06-01 17:38:53 +0200492 free(cur_unixsocket);
493 cur_unixsocket = strdup(old_unixsocket);
494 return;
495 }
496 }
497 }
498 }
499 }
500 }
501 if (!cur_unixsocket && old_unixsocket)
502 cur_unixsocket = strdup(old_unixsocket);
503}
504
William Lallemand73b85e72017-06-01 17:38:51 +0200505/*
506 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800507 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200508 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100509void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200510{
William Lallemand00417412020-06-05 14:08:41 +0200511 char **next_argv = NULL;
512 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200513 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200514 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200515 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100516 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100517 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200518
519 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100520#if defined(USE_SYSTEMD)
521 if (global.tune.options & GTUNE_USE_SYSTEMD)
522 sd_notify(0, "RELOADING=1");
523#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200524 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
525
William Lallemandbc193052018-09-11 10:06:26 +0200526 mworker_proc_list_to_env(); /* put the children description in the env */
527
William Lallemand7c756a82018-11-26 11:53:40 +0100528 /* during the reload we must ensure that every FDs that can't be
529 * reuse (ie those that are not referenced in the proc_list)
530 * are closed or they will leak. */
531
532 /* close the listeners FD */
533 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200534
535 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
536 /* close the poller FD and the thread waker pipe FD */
537 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
538 ptdf->fct();
539 if (fdtab)
540 deinit_pollers();
541 }
Ilya Shipitsin98a9e1b2021-02-19 23:42:53 +0500542#ifdef HAVE_SSL_RAND_KEEP_RANDOM_DEVICES_OPEN
William Lallemand5fdb5b32019-10-15 14:04:08 +0200543 /* close random device FDs */
544 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100545#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100546
Willy Tarreau8dca1952019-03-01 10:21:55 +0100547 /* restore the initial FD limits */
548 limit.rlim_cur = rlim_fd_cur_at_boot;
549 limit.rlim_max = rlim_fd_max_at_boot;
550 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
551 getrlimit(RLIMIT_NOFILE, &limit);
552 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
553 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
554 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
555 }
556
William Lallemand73b85e72017-06-01 17:38:51 +0200557 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200558 while (old_argv[old_argc])
559 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200560
William Lallemand85b0bd92017-06-01 17:38:53 +0200561 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemandaba7f8b2021-04-21 16:55:34 +0200562 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + 1,
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200563 sizeof(*next_argv));
William Lallemand73b85e72017-06-01 17:38:51 +0200564 if (next_argv == NULL)
565 goto alloc_error;
566
William Lallemand00417412020-06-05 14:08:41 +0200567 /* copy the program name */
568 next_argv[next_argc++] = old_argv[0];
569
570 /* insert the new options just after argv[0] in case we have a -- */
571
William Lallemand73b85e72017-06-01 17:38:51 +0200572 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200573 if (mworker_child_nb() > 0) {
574 struct mworker_proc *child;
575
William Lallemand73b85e72017-06-01 17:38:51 +0200576 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200577
578 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100579 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200580 continue;
William Lallemand00417412020-06-05 14:08:41 +0200581 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200582 goto alloc_error;
583 msg = NULL;
584 }
585 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200586 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200587 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200588 next_argv[next_argc++] = "-x";
589 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200590 }
591
William Lallemand00417412020-06-05 14:08:41 +0200592 /* copy the previous options */
593 for (i = 1; i < old_argc; i++)
594 next_argv[next_argc++] = old_argv[i];
595
Christopher Faulet767a84b2017-11-24 16:50:31 +0100596 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200597 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100598 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200599
Christopher Faulet767a84b2017-11-24 16:50:31 +0100600 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
Willy Tarreau61cfdf42021-02-20 10:46:51 +0100601 ha_free(&next_argv);
William Lallemand722d4ca2017-11-15 19:02:55 +0100602 return;
603
William Lallemand73b85e72017-06-01 17:38:51 +0200604alloc_error:
Willy Tarreau61cfdf42021-02-20 10:46:51 +0100605 ha_free(&next_argv);
Joseph Herlant07a08342018-11-15 10:43:05 -0800606 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200607 return;
608}
609
William Lallemandb3f2be32018-09-11 10:06:18 +0200610static void mworker_loop()
611{
612
613#if defined(USE_SYSTEMD)
614 if (global.tune.options & GTUNE_USE_SYSTEMD)
615 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
616#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200617 /* Busy polling makes no sense in the master :-) */
618 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200619
William Lallemandbc193052018-09-11 10:06:26 +0200620 master = 1;
621
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100622 signal_unregister(SIGTTIN);
623 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100624 signal_unregister(SIGUSR1);
625 signal_unregister(SIGHUP);
626 signal_unregister(SIGQUIT);
627
William Lallemandb3f2be32018-09-11 10:06:18 +0200628 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
629 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100630 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
631 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200632 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
633 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
634 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
635 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
636
637 mworker_unblock_signals();
638 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100639 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200640
William Lallemandbc193052018-09-11 10:06:26 +0200641 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
642 some SIGCHLD were lost */
643
William Lallemandb3f2be32018-09-11 10:06:18 +0200644 global.nbthread = 1;
645 relative_pid = 1;
646 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100647 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200648
William Lallemand2672eb92018-12-14 15:52:39 +0100649#ifdef USE_THREAD
650 tid_bit = 1;
651 all_threads_mask = 1;
652#endif
653
William Lallemandb3f2be32018-09-11 10:06:18 +0200654 jobs++; /* this is the "master" job, we want to take care of the
655 signals even if there is no listener so the poll loop don't
656 leave */
657
658 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200659 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200660}
William Lallemandcb11fd22017-06-01 17:38:52 +0200661
662/*
663 * Reexec the process in failure mode, instead of exiting
664 */
665void reexec_on_failure()
666{
667 if (!atexit_flag)
668 return;
669
670 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
671
Christopher Faulet767a84b2017-11-24 16:50:31 +0100672 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200673 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200674}
William Lallemand73b85e72017-06-01 17:38:51 +0200675
676
677/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200678 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
679 * a signal zero to all subscribers. This means that it's as easy as
680 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200681 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100682static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200683{
684 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200685 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100686 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200687}
688
689/*
690 * upon SIGTTOU, we pause everything
691 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100692static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200693{
Willy Tarreau775e0012020-09-24 16:36:26 +0200694 if (protocol_pause_all() & ERR_FATAL) {
695 const char *msg = "Some proxies refused to pause, performing soft stop now.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200696 ha_warning("%s", msg);
697 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200698 soft_stop();
699 }
Willy Tarreaubafbe012017-11-24 17:34:44 +0100700 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200701}
702
703/*
704 * upon SIGTTIN, let's have a soft stop.
705 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100706static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200707{
Willy Tarreau775e0012020-09-24 16:36:26 +0200708 if (protocol_resume_all() & ERR_FATAL) {
709 const char *msg = "Some proxies refused to resume, probably due to a conflict on a listening port. You may want to try again after the conflicting application is stopped, otherwise a restart might be needed to resume safe operations.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200710 ha_warning("%s", msg);
711 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200712 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200713}
714
715/*
716 * this function dumps every server's state when the process receives SIGHUP.
717 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100718static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200719{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100720 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200721
Christopher Faulet767a84b2017-11-24 16:50:31 +0100722 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200723 while (p) {
724 struct server *s = p->srv;
725
726 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
727 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100728 chunk_printf(&trash,
729 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
730 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200731 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100732 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200733 ha_warning("%s\n", trash.area);
734 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200735 s = s->next;
736 }
737
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200738 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
739 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100740 chunk_printf(&trash,
741 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
742 p->id,
743 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200744 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100745 chunk_printf(&trash,
746 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
747 p->id,
748 (p->srv_bck) ? "is running on backup servers" : "has no server available",
749 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200750 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100751 chunk_printf(&trash,
752 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
753 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
754 p->id, p->srv_act, p->srv_bck,
755 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200756 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200757 ha_warning("%s\n", trash.area);
758 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200759
760 p = p->next;
761 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200762}
763
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100764static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200765{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200766 /* dump memory usage then free everything possible */
767 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100768 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200769}
770
William Lallemande1340412017-12-28 16:09:36 +0100771/*
772 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
773 * If <fd> < 0, it opens /dev/null and use it to dup
774 *
775 * In the case of chrooting, you have to open /dev/null before the chroot, and
776 * pass the <fd> to this function
777 */
778static void stdio_quiet(int fd)
779{
780 if (fd < 0)
781 fd = open("/dev/null", O_RDWR, 0);
782
783 if (fd > -1) {
784 fclose(stdin);
785 fclose(stdout);
786 fclose(stderr);
787
788 dup2(fd, 0);
789 dup2(fd, 1);
790 dup2(fd, 2);
791 if (fd > 2)
792 close(fd);
793 return;
794 }
795
796 ha_alert("Cannot open /dev/null\n");
797 exit(EXIT_FAILURE);
798}
799
800
Joseph Herlant03420902018-11-15 10:41:50 -0800801/* This function checks if cfg_cfgfiles contains directories.
802 * If it finds one, it adds all the files (and only files) it contains
803 * in cfg_cfgfiles in place of the directory (and removes the directory).
804 * It adds the files in lexical order.
805 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200806 * It doesn't add files with name starting with '.'
807 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100808static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200809{
810 struct wordlist *wl, *wlb;
811 char *err = NULL;
812
813 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
814 struct stat file_stat;
815 struct dirent **dir_entries = NULL;
816 int dir_entries_nb;
817 int dir_entries_it;
818
819 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100820 ha_alert("Cannot open configuration file/directory %s : %s\n",
821 wl->s,
822 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200823 exit(1);
824 }
825
826 if (!S_ISDIR(file_stat.st_mode))
827 continue;
828
829 /* from this point wl->s is a directory */
830
831 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
832 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100833 ha_alert("Cannot open configuration directory %s : %s\n",
834 wl->s,
835 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200836 exit(1);
837 }
838
839 /* for each element in the directory wl->s */
840 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
841 struct dirent *dir_entry = dir_entries[dir_entries_it];
842 char *filename = NULL;
843 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
844
845 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -0800846 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200847 */
848 if (dir_entry->d_name[0] == '.' ||
849 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
850 goto next_dir_entry;
851
852 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100853 ha_alert("Cannot load configuration files %s : out of memory.\n",
854 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200855 exit(1);
856 }
857
858 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100859 ha_alert("Cannot open configuration file %s : %s\n",
860 wl->s,
861 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200862 exit(1);
863 }
864
865 /* don't add anything else than regular file in cfg_cfgfiles
866 * this way we avoid loops
867 */
868 if (!S_ISREG(file_stat.st_mode))
869 goto next_dir_entry;
870
871 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100872 ha_alert("Cannot load configuration files %s : %s\n",
873 filename,
874 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200875 exit(1);
876 }
877
878next_dir_entry:
879 free(filename);
880 free(dir_entry);
881 }
882
883 free(dir_entries);
884
885 /* remove the current directory (wl) from cfg_cfgfiles */
886 free(wl->s);
Willy Tarreau2b718102021-04-21 07:32:39 +0200887 LIST_DELETE(&wl->list);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200888 free(wl);
889 }
890
891 free(err);
892}
893
Willy Tarreaubaaee002006-06-26 02:48:02 +0200894/*
William Lallemand73b85e72017-06-01 17:38:51 +0200895 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +0200896 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +0200897 * Return an allocated copy of argv
898 */
899
900static char **copy_argv(int argc, char **argv)
901{
William Lallemanddf6c5a82020-06-04 17:40:23 +0200902 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +0200903
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200904 newargv = calloc(argc + 2, sizeof(*newargv));
William Lallemand73b85e72017-06-01 17:38:51 +0200905 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100906 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +0200907 return NULL;
908 }
William Lallemanddf6c5a82020-06-04 17:40:23 +0200909 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +0200910
William Lallemanddf6c5a82020-06-04 17:40:23 +0200911 /* first copy argv[0] */
912 *newargv++ = *argv++;
913 argc--;
914
915 while (argc > 0) {
916 if (**argv != '-') {
917 /* non options are copied but will fail in the argument parser */
918 *newargv++ = *argv++;
919 argc--;
920
921 } else {
922 char *flag;
923
924 flag = *argv + 1;
925
926 if (flag[0] == '-' && flag[1] == 0) {
927 /* "--\0" copy every arguments till the end of argv */
928 *newargv++ = *argv++;
929 argc--;
930
931 while (argc > 0) {
932 *newargv++ = *argv++;
933 argc--;
934 }
935 } else {
936 switch (*flag) {
937 case 's':
938 /* -sf / -st and their parameters are ignored */
939 if (flag[1] == 'f' || flag[1] == 't') {
940 argc--;
941 argv++;
942 /* The list can't contain a negative value since the only
943 way to know the end of this list is by looking for the
944 next option or the end of the options */
945 while (argc > 0 && argv[0][0] != '-') {
946 argc--;
947 argv++;
948 }
William Lallemand398da622020-09-02 16:12:23 +0200949 } else {
950 argc--;
951 argv++;
952
William Lallemanddf6c5a82020-06-04 17:40:23 +0200953 }
954 break;
955
956 case 'x':
957 /* this option and its parameter are ignored */
958 argc--;
959 argv++;
960 if (argc > 0) {
961 argc--;
962 argv++;
963 }
964 break;
965
966 case 'C':
967 case 'n':
968 case 'm':
969 case 'N':
970 case 'L':
971 case 'f':
972 case 'p':
973 case 'S':
974 /* these options have only 1 parameter which must be copied and can start with a '-' */
975 *newargv++ = *argv++;
976 argc--;
977 if (argc == 0)
978 goto error;
979 *newargv++ = *argv++;
980 argc--;
981 break;
982 default:
983 /* for other options just copy them without parameters, this is also done
984 * for options like "--foo", but this will fail in the argument parser.
985 * */
986 *newargv++ = *argv++;
987 argc--;
988 break;
989 }
William Lallemand73b85e72017-06-01 17:38:51 +0200990 }
991 }
William Lallemand73b85e72017-06-01 17:38:51 +0200992 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200993
William Lallemanddf6c5a82020-06-04 17:40:23 +0200994 return retargv;
995
996error:
997 free(retargv);
998 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +0200999}
1000
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001001
1002/* Performs basic random seed initialization. The main issue with this is that
1003 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1004 * which means that there will only be 4 billion possible random sequences once
1005 * srandom() is called, regardless of the internal state. Not calling it is
1006 * even worse as we'll always produce the same randoms sequences. What we do
1007 * here is to create an initial sequence from various entropy sources, hash it
1008 * using SHA1 and keep the resulting 160 bits available globally.
1009 *
1010 * We initialize the current process with the first 32 bits before starting the
1011 * polling loop, where all this will be changed to have process specific and
1012 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001013 *
1014 * Before starting threads, it's still possible to call random() as srandom()
1015 * is initialized from this, but after threads and/or processes are started,
1016 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001017 */
1018static void ha_random_boot(char *const *argv)
1019{
1020 unsigned char message[256];
1021 unsigned char *m = message;
1022 struct timeval tv;
1023 blk_SHA_CTX ctx;
1024 unsigned long l;
1025 int fd;
1026 int i;
1027
1028 /* start with current time as pseudo-random seed */
1029 gettimeofday(&tv, NULL);
1030 write_u32(m, tv.tv_sec); m += 4;
1031 write_u32(m, tv.tv_usec); m += 4;
1032
1033 /* PID and PPID add some OS-based randomness */
1034 write_u16(m, getpid()); m += 2;
1035 write_u16(m, getppid()); m += 2;
1036
1037 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1038 fd = open("/dev/urandom", O_RDONLY);
1039 if (fd >= 0) {
1040 i = read(fd, m, 20);
1041 if (i > 0)
1042 m += i;
1043 close(fd);
1044 }
1045
1046 /* take up to 160 bits bytes from openssl (non-blocking) */
1047#ifdef USE_OPENSSL
1048 if (RAND_bytes(m, 20) == 1)
1049 m += 20;
1050#endif
1051
1052 /* take 160 bits from existing random in case it was already initialized */
1053 for (i = 0; i < 5; i++) {
1054 write_u32(m, random());
1055 m += 4;
1056 }
1057
1058 /* stack address (benefit form operating system's ASLR) */
1059 l = (unsigned long)&m;
1060 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1061
1062 /* argv address (benefit form operating system's ASLR) */
1063 l = (unsigned long)&argv;
1064 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1065
1066 /* use tv_usec again after all the operations above */
1067 gettimeofday(&tv, NULL);
1068 write_u32(m, tv.tv_usec); m += 4;
1069
1070 /*
1071 * At this point, ~84-92 bytes have been used
1072 */
1073
1074 /* finish with the hostname */
1075 strncpy((char *)m, hostname, message + sizeof(message) - m);
1076 m += strlen(hostname);
1077
1078 /* total message length */
1079 l = m - message;
1080
1081 memset(&ctx, 0, sizeof(ctx));
1082 blk_SHA1_Init(&ctx);
1083 blk_SHA1_Update(&ctx, message, l);
1084 blk_SHA1_Final(boot_seed, &ctx);
1085
1086 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001087 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001088}
1089
Willy Tarreau5a023f02019-03-01 14:19:31 +01001090/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1091 * setting, and returns it. It may return -1 meaning "unlimited" if some
1092 * unlimited proxies have been found and the global.maxconn value is not yet
1093 * set. It may also return a value greater than maxconn if it's not yet set.
1094 * Note that a value of zero means there is no need for pipes. -1 is never
1095 * returned if global.maxconn is valid.
1096 */
1097static int compute_ideal_maxpipes()
1098{
1099 struct proxy *cur;
1100 int nbfe = 0, nbbe = 0;
1101 int unlimited = 0;
1102 int pipes;
1103 int max;
1104
1105 for (cur = proxies_list; cur; cur = cur->next) {
1106 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1107 if (cur->cap & PR_CAP_FE) {
1108 max = cur->maxconn;
1109 nbfe += max;
1110 if (!max) {
1111 unlimited = 1;
1112 break;
1113 }
1114 }
1115 if (cur->cap & PR_CAP_BE) {
1116 max = cur->fullconn ? cur->fullconn : global.maxconn;
1117 nbbe += max;
1118 if (!max) {
1119 unlimited = 1;
1120 break;
1121 }
1122 }
1123 }
1124 }
1125
1126 pipes = MAX(nbfe, nbbe);
1127 if (global.maxconn) {
1128 if (pipes > global.maxconn || unlimited)
1129 pipes = global.maxconn;
1130 } else if (unlimited) {
1131 pipes = -1;
1132 }
1133
1134 return pipes >= 4 ? pipes / 4 : pipes;
1135}
1136
Willy Tarreauac350932019-03-01 15:43:14 +01001137/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1138 * rlimits and computes an ideal maxconn. It's meant to be called only when
1139 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001140 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1141 * default 100) is returned as it is expected that it will even run on tight
1142 * environments, and will maintain compatibility with previous packages that
1143 * used to rely on this value as the default one. The system will emit a
1144 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001145 */
1146static int compute_ideal_maxconn()
1147{
1148 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1149 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1150 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001151 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001152 int maxconn;
1153
1154 /* we have to take into account these elements :
1155 * - number of engine_fds, which inflates the number of FD needed per
1156 * connection by this number.
1157 * - number of pipes per connection on average : for the unlimited
1158 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1159 * fixed value of 2*pipes.
1160 * - two FDs per connection
1161 */
1162
1163 /* subtract listeners and checks */
1164 remain -= global.maxsock;
1165
Willy Tarreau3f200852019-03-14 19:13:17 +01001166 /* one epoll_fd/kqueue_fd per thread */
1167 remain -= global.nbthread;
1168
1169 /* one wake-up pipe (2 fd) per thread */
1170 remain -= 2 * global.nbthread;
1171
Willy Tarreauac350932019-03-01 15:43:14 +01001172 /* Fixed pipes values : we only subtract them if they're not larger
1173 * than the remaining FDs because pipes are optional.
1174 */
1175 if (pipes >= 0 && pipes * 2 < remain)
1176 remain -= pipes * 2;
1177
1178 if (pipes < 0) {
1179 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1180 * = maxconn * (2 + 0.5 + engine_fds)
1181 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1182 */
1183 maxconn = 2 * remain / (5 + 2 * engine_fds);
1184 } else {
1185 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1186 * = maxconn * (2 + engine_fds)
1187 */
1188 maxconn = remain / (2 + engine_fds);
1189 }
1190
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001191 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001192}
1193
Willy Tarreaua409f302020-03-10 17:08:53 +01001194/* computes the estimated maxsock value for the given maxconn based on the
1195 * possibly set global.maxpipes and existing partial global.maxsock. It may
1196 * temporarily change global.maxconn for the time needed to propagate the
1197 * computations, and will reset it.
1198 */
1199static int compute_ideal_maxsock(int maxconn)
1200{
1201 int maxpipes = global.maxpipes;
1202 int maxsock = global.maxsock;
1203
1204
1205 if (!maxpipes) {
1206 int old_maxconn = global.maxconn;
1207
1208 global.maxconn = maxconn;
1209 maxpipes = compute_ideal_maxpipes();
1210 global.maxconn = old_maxconn;
1211 }
1212
1213 maxsock += maxconn * 2; /* each connection needs two sockets */
1214 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1215 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1216 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1217
1218 /* compute fd used by async engines */
1219 if (global.ssl_used_async_engines) {
1220 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1221
1222 maxsock += maxconn * sides * global.ssl_used_async_engines;
1223 }
1224 return maxsock;
1225}
1226
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07001227/* Tests if it is possible to set the current process's RLIMIT_NOFILE to
Willy Tarreau304e17e2020-03-10 17:54:54 +01001228 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1229 * value is accepted, non-zero otherwise. This is used to determine if an
1230 * automatic limit may be applied or not. When it is not, the caller knows that
1231 * the highest we can do is the rlim_max at boot. In case of error, we return
1232 * that the setting is possible, so that we defer the error processing to the
1233 * final stage in charge of enforcing this.
1234 */
1235static int check_if_maxsock_permitted(int maxsock)
1236{
1237 struct rlimit orig_limit, test_limit;
1238 int ret;
1239
1240 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1241 return 1;
1242
1243 /* don't go further if we can't even set to what we have */
1244 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1245 return 1;
1246
1247 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1248 test_limit.rlim_cur = test_limit.rlim_max;
1249 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1250
1251 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1252 return 1;
1253
1254 return ret == 0;
1255}
1256
1257
William Lallemand73b85e72017-06-01 17:38:51 +02001258/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001259 * This function initializes all the necessary variables. It only returns
1260 * if everything is OK. If something fails, it exits.
1261 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001262static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001263{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001264 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001265 char *tmp;
1266 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001267 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001268 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001269 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001270 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001271 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001272 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001273 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001274 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001275
Christopher Faulete3a5e352017-10-24 13:53:54 +02001276 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001277 old_argv = copy_argv(argc, argv);
1278 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001279 ha_alert("failed to copy argv.\n");
1280 exit(1);
1281 }
William Lallemand73b85e72017-06-01 17:38:51 +02001282
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001283 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001284 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001285 exit(1);
1286 }
David du Colombier7af46052012-05-16 14:16:48 +02001287
Emeric Brun2b920a12010-09-23 18:30:22 +02001288 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1289 * the string in case of truncation, and at least FreeBSD appears not to do
1290 * it.
1291 */
1292 memset(hostname, 0, sizeof(hostname));
1293 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001294
1295 if ((localpeer = strdup(hostname)) == NULL) {
1296 ha_alert("Cannot allocate memory for local peer.\n");
1297 exit(EXIT_FAILURE);
1298 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001299 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001300
William Lallemand24c928c2020-01-14 17:58:18 +01001301 /* we were in mworker mode, we should restart in mworker mode */
1302 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1303 global.mode |= MODE_MWORKER;
1304
Willy Tarreaubaaee002006-06-26 02:48:02 +02001305 /*
1306 * Initialize the previously static variables.
1307 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001308
Willy Tarreau173d9952018-01-26 21:48:23 +01001309 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001310 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001311
Willy Tarreaubaaee002006-06-26 02:48:02 +02001312
1313#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001314 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001315#endif
1316
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001317 tzset();
Willy Tarreauc4c80fb2021-04-11 15:00:34 +02001318 tv_init_process_date();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001319 start_date = now;
1320
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001321 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001322
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001323 if (init_acl() != 0)
1324 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001325
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001326 /* Initialise lua. */
1327 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001328
Christopher Fauletff2613e2016-11-09 11:36:17 +01001329 /* Initialize process vars */
1330 vars_init(&global.vars, SCOPE_PROC);
1331
Willy Tarreau43b78992009-01-25 15:42:27 +01001332 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001333#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001334 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001335#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001336#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001337 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001338#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001339#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001340 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001341#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001342#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001343 global.tune.options |= GTUNE_USE_EVPORTS;
1344#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001345#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001346 global.tune.options |= GTUNE_USE_SPLICE;
1347#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001348#if defined(USE_GETADDRINFO)
1349 global.tune.options |= GTUNE_USE_GAI;
1350#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001351#if defined(SO_REUSEPORT)
1352 global.tune.options |= GTUNE_USE_REUSEPORT;
1353#endif
Willy Tarreau76cc6992020-07-01 18:49:24 +02001354#ifdef USE_THREAD
1355 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
1356#endif
William Dauchya5194602020-03-28 19:29:58 +01001357 global.tune.options |= GTUNE_STRICT_LIMITS;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001358
1359 pid = getpid();
1360 progname = *argv;
1361 while ((tmp = strchr(progname, '/')) != NULL)
1362 progname = tmp + 1;
1363
Kevinm48936af2010-12-22 16:08:21 +00001364 /* the process name is used for the logs only */
Eric Salama7cea6062020-10-02 11:58:19 +02001365 chunk_initlen(&global.log_tag, strdup(progname), strlen(progname), strlen(progname));
1366 if (b_orig(&global.log_tag) == NULL) {
1367 chunk_destroy(&global.log_tag);
1368 ha_alert("Cannot allocate memory for log_tag.\n");
1369 exit(EXIT_FAILURE);
1370 }
Kevinm48936af2010-12-22 16:08:21 +00001371
Willy Tarreaubaaee002006-06-26 02:48:02 +02001372 argc--; argv++;
1373 while (argc > 0) {
1374 char *flag;
1375
1376 if (**argv == '-') {
1377 flag = *argv+1;
1378
1379 /* 1 arg */
1380 if (*flag == 'v') {
1381 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001382 if (flag[1] == 'v') /* -vv */
1383 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001384 exit(0);
1385 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001386#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001387 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001388 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001389#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001390#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001391 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001392 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001393#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001394#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001395 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001396 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001397#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001398#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001399 else if (*flag == 'd' && flag[1] == 'v')
1400 global.tune.options &= ~GTUNE_USE_EVPORTS;
1401#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001402#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001403 else if (*flag == 'd' && flag[1] == 'S')
1404 global.tune.options &= ~GTUNE_USE_SPLICE;
1405#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001406#if defined(USE_GETADDRINFO)
1407 else if (*flag == 'd' && flag[1] == 'G')
1408 global.tune.options &= ~GTUNE_USE_GAI;
1409#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001410#if defined(SO_REUSEPORT)
1411 else if (*flag == 'd' && flag[1] == 'R')
1412 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1413#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001414 else if (*flag == 'd' && flag[1] == 'V')
1415 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001416 else if (*flag == 'V')
1417 arg_mode |= MODE_VERBOSE;
1418 else if (*flag == 'd' && flag[1] == 'b')
1419 arg_mode |= MODE_FOREGROUND;
Amaury Denoyelle7b01a8d2021-03-29 10:29:07 +02001420 else if (*flag == 'd' && flag[1] == 'D')
1421 arg_mode |= MODE_DIAG;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001422 else if (*flag == 'd' && flag[1] == 'W')
1423 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001424 else if (*flag == 'd' && flag[1] == 'M')
1425 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001426 else if (*flag == 'd' && flag[1] == 'r')
1427 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001428 else if (*flag == 'd')
1429 arg_mode |= MODE_DEBUG;
1430 else if (*flag == 'c')
1431 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001432 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001433 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001434 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001435 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001436#if defined(USE_SYSTEMD)
1437 global.tune.options |= GTUNE_USE_SYSTEMD;
1438#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001439 ha_alert("master-worker mode with systemd support (-Ws) requested, but not compiled. Use master-worker mode (-W) if you are not using Type=notify in your unit file or recompile with USE_SYSTEMD=1.\n\n");
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001440 usage(progname);
1441#endif
1442 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001443 else if (*flag == 'W')
1444 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445 else if (*flag == 'q')
1446 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001447 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001448 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001449 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001450 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001451 }
William Lallemand4fc09692017-06-19 16:37:19 +02001452 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001453 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001454 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001455
Olivier Houchardf73629d2017-04-05 22:33:04 +02001456 argv++;
1457 argc--;
1458 }
William Lallemande7361152018-10-26 14:47:36 +02001459 else if (*flag == 'S') {
1460 struct wordlist *c;
1461
William Lallemanda6b32492020-06-04 23:49:20 +02001462 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001463 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1464 usage(progname);
1465 }
1466 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1467 ha_alert("Cannot allocate memory\n");
1468 exit(EXIT_FAILURE);
1469 }
Willy Tarreau2b718102021-04-21 07:32:39 +02001470 LIST_INSERT(&mworker_cli_conf, &c->list);
William Lallemande7361152018-10-26 14:47:36 +02001471
1472 argv++;
1473 argc--;
1474 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001475 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1476 /* list of pids to finish ('f') or terminate ('t') */
1477
1478 if (flag[1] == 'f')
1479 oldpids_sig = SIGUSR1; /* finish then exit */
1480 else
1481 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001482 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001483 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001484 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1485 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001486 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001487 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001488 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001489 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001490 errno = 0;
1491 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1492 if (errno) {
1493 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1494 flag,
1495 *argv, strerror(errno));
1496 exit(1);
1497 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001498 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001499 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001500 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1501 flag, endptr);
1502 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001503 }
Chris Lane236062f2018-02-05 23:15:44 +00001504 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001505 if (oldpids[nb_oldpids] <= 0)
1506 usage(progname);
1507 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001508 }
1509 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001510 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1511 /* now that's a cfgfile list */
1512 argv++; argc--;
1513 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001514 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001515 ha_alert("Cannot load configuration file/directory %s : %s\n",
1516 *argv,
1517 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001518 exit(1);
1519 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001520 argv++; argc--;
1521 }
1522 break;
1523 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001524 else { /* >=2 args */
1525 argv++; argc--;
1526 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001527 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001528
1529 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001530 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001531 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001532 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001533 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001534 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001535 free(localpeer);
1536 if ((localpeer = strdup(*argv)) == NULL) {
1537 ha_alert("Cannot allocate memory for local peer.\n");
1538 exit(EXIT_FAILURE);
1539 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001540 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001541 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001542 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001543 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001544 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001545 ha_alert("Cannot load configuration file/directory %s : %s\n",
1546 *argv,
1547 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001548 exit(1);
1549 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001550 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001551 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001552 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001553 }
1554 }
1555 }
1556 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001557 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001558 argv++; argc--;
1559 }
1560
Christopher Faulete3a5e352017-10-24 13:53:54 +02001561 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Amaury Denoyelle7b01a8d2021-03-29 10:29:07 +02001562 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING
1563 | MODE_DIAG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001564
William Lallemand944e6192018-11-21 15:48:31 +01001565 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001566 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001567 global.mode |= MODE_MWORKER_WAIT;
1568 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001569 }
1570
1571 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1572 atexit_flag = 1;
1573 atexit(reexec_on_failure);
1574 }
1575
Willy Tarreau576132e2011-09-10 19:26:56 +02001576 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001577 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001578 exit(1);
1579 }
1580
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001582
Amaury Denoyellea6f9c5d2021-04-23 16:58:08 +02001583#ifdef USE_CPU_AFFINITY
1584 {
1585 int i;
1586 for (i = 0; i < MAX_PROCS; ++i) {
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02001587 ha_cpuset_zero(&cpu_map.proc[i]);
1588 ha_cpuset_zero(&cpu_map.proc_t1[i]);
1589 ha_cpuset_zero(&cpu_map.thread[i]);
Amaury Denoyellea6f9c5d2021-04-23 16:58:08 +02001590 }
Amaury Denoyelle982fb532021-04-21 18:39:58 +02001591 }
Amaury Denoyellea6f9c5d2021-04-23 16:58:08 +02001592#endif
Amaury Denoyelle982fb532021-04-21 18:39:58 +02001593
William Lallemand944e6192018-11-21 15:48:31 +01001594 /* in wait mode, we don't try to read the configuration files */
1595 if (!(global.mode & MODE_MWORKER_WAIT)) {
Christopher Faulet4e366822021-01-12 18:57:38 +01001596 char *env_cfgfiles = NULL;
1597 int env_err = 0;
Willy Tarreauc4382422009-12-06 13:10:44 +01001598
William Lallemand944e6192018-11-21 15:48:31 +01001599 /* handle cfgfiles that are actually directories */
1600 cfgfiles_expand_directories();
1601
1602 if (LIST_ISEMPTY(&cfg_cfgfiles))
1603 usage(progname);
1604
1605
1606 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1607 int ret;
1608
Christopher Faulet4e366822021-01-12 18:57:38 +01001609 if (env_err == 0) {
1610 if (!memprintf(&env_cfgfiles, "%s%s%s",
1611 (env_cfgfiles ? env_cfgfiles : ""),
1612 (env_cfgfiles ? ";" : ""), wl->s))
1613 env_err = 1;
1614 }
William Lallemand7b302d82019-05-20 11:15:37 +02001615
William Lallemand944e6192018-11-21 15:48:31 +01001616 ret = readcfgfile(wl->s);
1617 if (ret == -1) {
1618 ha_alert("Could not open configuration file %s : %s\n",
1619 wl->s, strerror(errno));
Christopher Faulet4e366822021-01-12 18:57:38 +01001620 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001621 exit(1);
1622 }
1623 if (ret & (ERR_ABORT|ERR_FATAL))
1624 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1625 err_code |= ret;
Christopher Faulet4e366822021-01-12 18:57:38 +01001626 if (err_code & ERR_ABORT) {
1627 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001628 exit(1);
Christopher Faulet4e366822021-01-12 18:57:38 +01001629 }
Willy Tarreauc4382422009-12-06 13:10:44 +01001630 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001631
William Lallemand944e6192018-11-21 15:48:31 +01001632 /* do not try to resolve arguments nor to spot inconsistencies when
1633 * the configuration contains fatal errors caused by files not found
1634 * or failed memory allocations.
1635 */
1636 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1637 ha_alert("Fatal errors found in configuration.\n");
Christopher Faulet4e366822021-01-12 18:57:38 +01001638 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001639 exit(1);
1640 }
Christopher Faulet4e366822021-01-12 18:57:38 +01001641 if (env_err) {
1642 ha_alert("Could not allocate memory for HAPROXY_CFGFILES env variable\n");
1643 exit(1);
1644 }
1645 setenv("HAPROXY_CFGFILES", env_cfgfiles, 1);
1646 free(env_cfgfiles);
William Lallemand7b302d82019-05-20 11:15:37 +02001647
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001648 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001649 if (global.mode & MODE_MWORKER) {
1650 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001651 struct mworker_proc *tmproc;
1652
William Lallemand482f9a92019-04-12 16:15:00 +02001653 setenv("HAPROXY_MWORKER", "1", 1);
1654
William Lallemand16dd1b32018-11-19 18:46:18 +01001655 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1656
William Lallemandf3a86832019-04-01 11:29:58 +02001657 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001658 if (!tmproc) {
1659 ha_alert("Cannot allocate process structures.\n");
1660 exit(EXIT_FAILURE);
1661 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001662 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001663 tmproc->reloads = 0;
1664 tmproc->relative_pid = 0;
1665 tmproc->pid = pid;
1666 tmproc->timestamp = start_date.tv_sec;
1667 tmproc->ipc_fd[0] = -1;
1668 tmproc->ipc_fd[1] = -1;
1669
1670 proc_self = tmproc;
1671
Willy Tarreau2b718102021-04-21 07:32:39 +02001672 LIST_APPEND(&proc_list, &tmproc->list);
William Lallemand16dd1b32018-11-19 18:46:18 +01001673 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001674
1675 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001676
William Lallemandf3a86832019-04-01 11:29:58 +02001677 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001678 if (!tmproc) {
1679 ha_alert("Cannot allocate process structures.\n");
1680 exit(EXIT_FAILURE);
1681 }
1682
William Lallemand8f7069a2019-04-12 16:09:23 +02001683 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001684 tmproc->pid = -1;
1685 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001686 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001687 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001688 tmproc->ipc_fd[0] = -1;
1689 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001690
1691 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1692 exit(EXIT_FAILURE);
1693 }
1694
Willy Tarreau2b718102021-04-21 07:32:39 +02001695 LIST_APPEND(&proc_list, &tmproc->list);
William Lallemandce83b4a2018-10-26 14:47:30 +02001696 }
William Lallemand944e6192018-11-21 15:48:31 +01001697 }
1698 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1699 struct wordlist *it, *c;
1700
William Lallemand1b663612018-10-26 14:47:33 +02001701 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001702
William Lallemande7361152018-10-26 14:47:36 +02001703
William Lallemand550db6d2018-11-06 17:37:12 +01001704 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001705
William Lallemand550db6d2018-11-06 17:37:12 +01001706 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001707 ha_alert("Can't create the master's CLI.\n");
1708 exit(EXIT_FAILURE);
1709 }
William Lallemande7361152018-10-26 14:47:36 +02001710
William Lallemand550db6d2018-11-06 17:37:12 +01001711 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1712
1713 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1714 ha_alert("Can't create the master's CLI.\n");
1715 exit(EXIT_FAILURE);
1716 }
Willy Tarreau2b718102021-04-21 07:32:39 +02001717 LIST_DELETE(&c->list);
William Lallemand550db6d2018-11-06 17:37:12 +01001718 free(c->s);
1719 free(c);
1720 }
1721 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001722 }
1723
Eric Salama5ba83352021-03-16 15:11:17 +01001724 if (!LIST_ISEMPTY(&mworker_cli_conf) && !(arg_mode & MODE_MWORKER)) {
1725 ha_warning("a master CLI socket was defined, but master-worker mode (-W) is not enabled.\n");
1726 }
1727
Willy Tarreauf42d7942020-10-20 11:54:49 +02001728 if (global.nbproc > 1 && !global.nbthread) {
1729 ha_warning("nbproc is deprecated!\n"
1730 " | For suffering many limitations, the 'nbproc' directive is now deprecated\n"
1731 " | and scheduled for removal in 2.5. Just comment it out: haproxy will use\n"
1732 " | threads and will run on all allocated processors. You may also switch to\n"
1733 " | 'nbthread %d' to keep the same number of processors. If you absolutely\n"
1734 " | want to run in multi-process mode, you can silence this warning by adding\n"
1735 " | 'nbthread 1', but then please report your use case to developers.\n",
1736 global.nbproc);
1737 }
1738
Willy Tarreaue90904d2021-02-12 14:08:31 +01001739 /* defaults sections are not needed anymore */
1740 proxy_destroy_all_defaults();
1741
Willy Tarreaubb925012009-07-23 13:36:36 +02001742 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001743 for (px = proxies_list; px; px = px->next) {
1744 struct server *srv;
1745 struct post_proxy_check_fct *ppcf;
1746 struct post_server_check_fct *pscf;
1747
Christopher Fauletd5bd8242020-11-02 16:20:13 +01001748 if (px->disabled)
1749 continue;
1750
Christopher Fauletc1692962019-08-12 09:51:07 +02001751 list_for_each_entry(pscf, &post_server_check_list, list) {
1752 for (srv = px->srv; srv; srv = srv->next)
1753 err_code |= pscf->fct(srv);
1754 }
1755 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1756 err_code |= ppcf->fct(px);
1757 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001758 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001759 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001760 exit(1);
1761 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001762
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01001763 err_code |= pattern_finalize_config();
1764 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1765 ha_alert("Failed to finalize pattern config.\n");
1766 exit(1);
1767 }
Willy Tarreau0f936722019-04-11 14:47:08 +02001768
Willy Tarreau70060452015-12-14 12:46:07 +01001769 /* recompute the amount of per-process memory depending on nbproc and
1770 * the shared SSL cache size (allowed to exist in all processes).
1771 */
1772 if (global.rlimit_memmax_all) {
1773#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1774 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1775
1776 global.rlimit_memmax =
1777 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1778 ssl_cache_bytes) / global.nbproc +
1779 ssl_cache_bytes + 1048575LL) / 1048576LL;
1780#else
1781 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1782#endif
1783 }
1784
Willy Tarreaue5733232019-05-22 19:24:06 +02001785#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001786 err_code |= netns_init();
1787 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001788 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001789 exit(1);
1790 }
1791#endif
1792
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001793 /* Apply server states */
1794 apply_server_state();
1795
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001796 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001797 srv_compute_all_admin_states(px);
1798
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001799 /* Apply servers' configured address */
1800 err_code |= srv_init_addr();
1801 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001802 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001803 exit(1);
1804 }
1805
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001806 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
1807 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
1808 exit(1);
1809 }
1810
Willy Tarreaubaaee002006-06-26 02:48:02 +02001811 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001812 struct peers *pr;
1813 struct proxy *px;
1814
Willy Tarreaubebd2122020-04-15 16:06:11 +02001815 if (warned & WARN_ANY)
1816 qfprintf(stdout, "Warnings were found.\n");
1817
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001818 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001819 if (pr->peers_fe)
1820 break;
1821
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001822 for (px = proxies_list; px; px = px->next)
Willy Tarreauc3914d42020-09-24 08:39:22 +02001823 if (!px->disabled && px->li_all)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001824 break;
1825
1826 if (pr || px) {
1827 /* At least one peer or one listener has been found */
1828 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02001829 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001830 }
1831 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1832 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001833 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02001834
Amaury Denoyelle5a6926d2021-03-30 17:34:24 +02001835 if (global.mode & MODE_DIAG) {
1836 cfg_run_diagnostics();
1837 }
1838
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001839 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001840 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001841
Willy Tarreaue6945732016-12-21 19:57:00 +01001842 list_for_each_entry(pcf, &post_check_list, list) {
1843 err_code |= pcf->fct();
1844 if (err_code & (ERR_ABORT|ERR_FATAL))
1845 exit(1);
1846 }
1847
Willy Tarreaubaaee002006-06-26 02:48:02 +02001848 if (cfg_maxconn > 0)
1849 global.maxconn = cfg_maxconn;
1850
Willy Tarreau4975d142021-03-13 11:00:33 +01001851 if (global.cli_fe)
1852 global.maxsock += global.cli_fe->maxconn;
Willy Tarreau8d687d82019-03-01 09:39:42 +01001853
1854 if (cfg_peers) {
1855 /* peers also need to bypass global maxconn */
1856 struct peers *p = cfg_peers;
1857
1858 for (p = cfg_peers; p; p = p->next)
1859 if (p->peers_fe)
1860 global.maxsock += p->peers_fe->maxconn;
1861 }
1862
Willy Tarreaubaaee002006-06-26 02:48:02 +02001863 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001864 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001865 global.pidfile = strdup(cfg_pidfile);
1866 }
1867
Willy Tarreaud0256482015-01-15 21:45:22 +01001868 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001869 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1870 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1871 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
1872 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01001873 *
1874 * If memmax is set, then it depends on which values are set. If
1875 * maxsslconn is set, we use memmax to determine how many cleartext
1876 * connections may be added, and set maxconn to the sum of the two.
1877 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1878 * the remaining amount of memory between memmax and the cleartext
1879 * connections. If neither are set, then it is considered that all
1880 * connections are SSL-capable, and maxconn is computed based on this,
1881 * then maxsslconn accordingly. We need to know if SSL is used on the
1882 * frontends, backends, or both, because when it's used on both sides,
1883 * we need twice the value for maxsslconn, but we only count the
1884 * handshake once since it is not performed on the two sides at the
1885 * same time (frontend-side is terminated before backend-side begins).
1886 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001887 * ssl_handshake_cost during its initialization. In any case, if
1888 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1889 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001890 */
Willy Tarreauac350932019-03-01 15:43:14 +01001891 ideal_maxconn = compute_ideal_maxconn();
1892
Willy Tarreaud0256482015-01-15 21:45:22 +01001893 if (!global.rlimit_memmax) {
1894 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01001895 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01001896 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1897 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1898 }
1899 }
1900#ifdef USE_OPENSSL
1901 else if (!global.maxconn && !global.maxsslconn &&
1902 (global.ssl_used_frontend || global.ssl_used_backend)) {
1903 /* memmax is set, compute everything automatically. Here we want
1904 * to ensure that all SSL connections will be served. We take
1905 * care of the number of sides where SSL is used, and consider
1906 * the worst case : SSL used on both sides and doing a handshake
1907 * simultaneously. Note that we can't have more than maxconn
1908 * handshakes at a time by definition, so for the worst case of
1909 * two SSL conns per connection, we count a single handshake.
1910 */
1911 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1912 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01001913 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01001914
1915 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1916 mem -= global.maxzlibmem;
1917 mem = mem * MEM_USABLE_RATIO;
1918
Willy Tarreau304e17e2020-03-10 17:54:54 +01001919 /* Principle: we test once to set maxconn according to the free
1920 * memory. If it results in values the system rejects, we try a
1921 * second time by respecting rlim_fd_max. If it fails again, we
1922 * go back to the initial value and will let the final code
1923 * dealing with rlimit report the error. That's up to 3 attempts.
1924 */
1925 do {
1926 global.maxconn = mem /
1927 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
1928 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1929 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01001930
Willy Tarreau304e17e2020-03-10 17:54:54 +01001931 if (retried == 1)
1932 global.maxconn = MIN(global.maxconn, ideal_maxconn);
1933 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001934#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01001935 if (global.maxconn > SYSTEM_MAXCONN)
1936 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001937#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01001938 global.maxsslconn = sides * global.maxconn;
1939
1940 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
1941 break;
1942 } while (retried++ < 2);
1943
Willy Tarreaud0256482015-01-15 21:45:22 +01001944 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1945 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1946 global.maxconn, global.maxsslconn);
1947 }
1948 else if (!global.maxsslconn &&
1949 (global.ssl_used_frontend || global.ssl_used_backend)) {
1950 /* memmax and maxconn are known, compute maxsslconn automatically.
1951 * maxsslconn being forced, we don't know how many of it will be
1952 * on each side if both sides are being used. The worst case is
1953 * when all connections use only one SSL instance because
1954 * handshakes may be on two sides at the same time.
1955 */
1956 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1957 int64_t mem = global.rlimit_memmax * 1048576ULL;
1958 int64_t sslmem;
1959
1960 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1961 mem -= global.maxzlibmem;
1962 mem = mem * MEM_USABLE_RATIO;
1963
Willy Tarreau87b09662015-04-03 00:22:06 +02001964 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001965 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1966 global.maxsslconn = round_2dig(global.maxsslconn);
1967
1968 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001969 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1970 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1971 "without SSL is %d, but %d was found and SSL is in use.\n",
1972 global.rlimit_memmax,
1973 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
1974 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001975 exit(1);
1976 }
1977
1978 if (global.maxsslconn > sides * global.maxconn)
1979 global.maxsslconn = sides * global.maxconn;
1980
1981 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1982 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1983 }
1984#endif
1985 else if (!global.maxconn) {
1986 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1987 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1988 int64_t mem = global.rlimit_memmax * 1048576ULL;
1989 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01001990 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01001991
1992 if (global.ssl_used_frontend || global.ssl_used_backend)
1993 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1994
1995 mem -= global.maxzlibmem;
1996 mem = mem * MEM_USABLE_RATIO;
1997
1998 clearmem = mem;
1999 if (sides)
2000 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2001
Willy Tarreau304e17e2020-03-10 17:54:54 +01002002 /* Principle: we test once to set maxconn according to the free
2003 * memory. If it results in values the system rejects, we try a
2004 * second time by respecting rlim_fd_max. If it fails again, we
2005 * go back to the initial value and will let the final code
2006 * dealing with rlimit report the error. That's up to 3 attempts.
2007 */
2008 do {
2009 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2010 if (retried == 1)
2011 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2012 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002013#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002014 if (global.maxconn > SYSTEM_MAXCONN)
2015 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002016#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002017
Willy Tarreau304e17e2020-03-10 17:54:54 +01002018 if (clearmem <= 0 || !global.maxconn) {
2019 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2020 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2021 "is %d, but %d was found.\n",
2022 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002023 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002024 global.maxsslconn);
2025 exit(1);
2026 }
2027
2028 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2029 break;
2030 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002031
2032 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2033 if (sides && global.maxsslconn > sides * global.maxconn) {
2034 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2035 "to be limited to %d. Better reduce global.maxsslconn to get more "
2036 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2037 }
2038 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2039 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002040 }
2041
Willy Tarreaua409f302020-03-10 17:08:53 +01002042 global.maxsock = compute_ideal_maxsock(global.maxconn);
2043 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002044 if (!global.maxpipes)
2045 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002046
Olivier Houchard88698d92019-04-16 19:07:22 +02002047 /* update connection pool thresholds */
2048 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2049 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2050
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002051 proxy_adjust_all_maxconn();
2052
Willy Tarreau1db37712007-06-03 17:16:49 +02002053 if (global.tune.maxpollevents <= 0)
2054 global.tune.maxpollevents = MAX_POLL_EVENTS;
2055
Willy Tarreau060a7612021-03-10 11:06:26 +01002056 if (global.tune.runqueue_depth <= 0) {
2057 /* tests on various thread counts from 1 to 64 have shown an
2058 * optimal queue depth following roughly 1/sqrt(threads).
2059 */
2060 int s = my_flsl(global.nbthread);
2061 s += (global.nbthread / s); // roughly twice the sqrt.
2062 global.tune.runqueue_depth = RUNQUEUE_DEPTH * 2 / s;
2063 }
Olivier Houchard1599b802018-05-24 18:59:04 +02002064
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002065 if (global.tune.recv_enough == 0)
2066 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2067
Willy Tarreau27a674e2009-08-17 07:23:33 +02002068 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2069 global.tune.maxrewrite = global.tune.bufsize / 2;
2070
Willy Tarreaubaaee002006-06-26 02:48:02 +02002071 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2072 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002073 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002074 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2075 }
2076
William Lallemand095ba4c2017-06-01 17:38:50 +02002077 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002078 /* command line daemon mode inhibits foreground and debug modes mode */
2079 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002080 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002081 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002082
2083 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002084
William Lallemand095ba4c2017-06-01 17:38:50 +02002085 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002086 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002087 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002088 }
2089
William Lallemand095ba4c2017-06-01 17:38:50 +02002090 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002091 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002092 ha_warning("<nbproc> is only meaningful in daemon mode or master-worker mode. Setting limit to 1 process.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02002093 global.nbproc = 1;
2094 }
2095
2096 if (global.nbproc < 1)
2097 global.nbproc = 1;
2098
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002099 if (global.nbthread < 1)
2100 global.nbthread = 1;
2101
Christopher Faulet3ef26392017-08-29 16:46:57 +02002102 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002103 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002104 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002105 exit(1);
2106 }
2107
Christopher Faulet96d44832017-11-14 22:02:30 +01002108 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002109 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002110 exit(1);
2111 }
2112
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002113 /*
2114 * Note: we could register external pollers here.
2115 * Built-in pollers have been registered before main().
2116 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002117
Willy Tarreau43b78992009-01-25 15:42:27 +01002118 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002119 disable_poller("kqueue");
2120
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002121 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2122 disable_poller("evports");
2123
Willy Tarreau43b78992009-01-25 15:42:27 +01002124 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002125 disable_poller("epoll");
2126
Willy Tarreau43b78992009-01-25 15:42:27 +01002127 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002128 disable_poller("poll");
2129
Willy Tarreau43b78992009-01-25 15:42:27 +01002130 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002131 disable_poller("select");
2132
2133 /* Note: we could disable any poller by name here */
2134
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002135 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002136 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002137 fprintf(stderr, "\n");
2138 list_filters(stderr);
2139 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002140
Willy Tarreau4f60f162007-04-08 16:39:58 +02002141 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002142 ha_alert("No polling mechanism available.\n"
2143 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2144 " is too low on this platform to support maxconn and the number of listeners\n"
2145 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2146 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2147 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2148 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2149 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2150 " check build settings using 'haproxy -vv'.\n\n",
2151 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002152 exit(1);
2153 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002154 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2155 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002156 }
2157
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002158 if (!global.node)
2159 global.node = strdup(hostname);
2160
Willy Tarreau02b092f2020-10-07 18:36:54 +02002161 /* stop disabled proxies */
2162 for (px = proxies_list; px; px = px->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02002163 if (px->disabled)
Willy Tarreau02b092f2020-10-07 18:36:54 +02002164 stop_proxy(px);
2165 }
2166
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002167 if (!hlua_post_init())
2168 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002169
Maxime de Roucy0f503922016-05-13 23:52:55 +02002170 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002171}
2172
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002173void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002174{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002175 struct proxy *p = proxies_list, *p0;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002176 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002177 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002178 struct logsrv *log, *logb;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002179 struct build_opts_str *bol, *bolb;
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002180 struct post_deinit_fct *pdf, *pdfb;
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002181 struct proxy_deinit_fct *pxdf, *pxdfb;
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002182 struct server_deinit_fct *srvdf, *srvdfb;
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002183 struct per_thread_init_fct *tif, *tifb;
2184 struct per_thread_deinit_fct *tdf, *tdfb;
2185 struct per_thread_alloc_fct *taf, *tafb;
2186 struct per_thread_free_fct *tff, *tffb;
Tim Duesterhus34bef072020-07-04 11:49:50 +02002187 struct post_server_check_fct *pscf, *pscfb;
Tim Duesterhusfc854942020-09-10 19:46:42 +02002188 struct post_check_fct *pcf, *pcfb;
Tim Duesterhus53508d62020-09-10 19:46:40 +02002189 struct post_proxy_check_fct *ppcf, *ppcfb;
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002190 int cur_fd;
2191
2192 /* At this point the listeners state is weird:
2193 * - most listeners are still bound and referenced in their protocol
2194 * - some might be zombies that are not in their proto anymore, but
2195 * still appear in their proxy's listeners with a valid FD.
2196 * - some might be stopped and still appear in their proxy as FD #-1
2197 * - among all of them, some might be inherited hence shared and we're
2198 * not allowed to pause them or whatever, we must just close them.
2199 * - finally some are not listeners (pipes, logs, stdout, etc) and
2200 * must be left intact.
2201 *
2202 * The safe way to proceed is to unbind (and close) whatever is not yet
2203 * unbound so that no more receiver/listener remains alive. Then close
2204 * remaining listener FDs, which correspond to zombie listeners (those
2205 * belonging to disabled proxies that were in another process).
2206 * objt_listener() would be cleaner here but not converted yet.
2207 */
2208 protocol_unbind_all();
2209
2210 for (cur_fd = 0; cur_fd < global.maxsock; cur_fd++) {
Willy Tarreau1a3770c2020-10-14 12:13:51 +02002211 if (!fdtab || !fdtab[cur_fd].owner)
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002212 continue;
2213
Willy Tarreaua74cb382020-10-15 21:29:49 +02002214 if (fdtab[cur_fd].iocb == &sock_accept_iocb) {
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002215 struct listener *l = fdtab[cur_fd].owner;
2216
2217 BUG_ON(l->state != LI_INIT);
2218 unbind_listener(l);
2219 }
2220 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002221
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002222 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002223 while (p) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002224 /* build a list of unique uri_auths */
2225 if (!ua)
2226 ua = p->uri_auth;
2227 else {
2228 /* check if p->uri_auth is unique */
2229 for (uap = ua; uap; uap=uap->next)
2230 if (uap == p->uri_auth)
2231 break;
2232
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002233 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002234 /* add it, if it is */
2235 p->uri_auth->next = ua;
2236 ua = p->uri_auth;
2237 }
William Lallemand0f99e342011-10-12 17:50:54 +02002238 }
2239
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002240 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002241 p = p->next;
Amaury Denoyelle27fefa12021-03-24 16:13:20 +01002242 free_proxy(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002243 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002244
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002245 while (ua) {
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002246 struct stat_scope *scope, *scopep;
2247
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002248 uap = ua;
2249 ua = ua->next;
2250
Willy Tarreaua534fea2008-08-03 12:19:50 +02002251 free(uap->uri_prefix);
2252 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002253 free(uap->node);
2254 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002255
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002256 userlist_free(uap->userlist);
Amaury Denoyelle68fd7e42021-03-25 17:15:52 +01002257 free_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002258
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002259 scope = uap->scope;
2260 while (scope) {
2261 scopep = scope;
2262 scope = scope->next;
2263
2264 free(scopep->px_id);
2265 free(scopep);
2266 }
2267
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002268 free(uap);
2269 }
2270
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002271 userlist_free(userlist);
2272
David Carlier834cb2e2015-09-25 12:02:25 +01002273 cfg_unregister_sections();
2274
Christopher Faulet0132d062017-07-26 15:33:35 +02002275 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002276
Willy Tarreau05554e62016-12-21 20:46:26 +01002277 list_for_each_entry(pdf, &post_deinit_list, list)
2278 pdf->fct();
2279
Willy Tarreau61cfdf42021-02-20 10:46:51 +01002280 ha_free(&global.log_send_hostname);
Dragan Dosen43885c72015-10-01 13:18:13 +02002281 chunk_destroy(&global.log_tag);
Willy Tarreau61cfdf42021-02-20 10:46:51 +01002282 ha_free(&global.chroot);
2283 ha_free(&global.pidfile);
2284 ha_free(&global.node);
2285 ha_free(&global.desc);
2286 ha_free(&oldpids);
2287 ha_free(&old_argv);
2288 ha_free(&localpeer);
2289 ha_free(&global.server_state_base);
2290 ha_free(&global.server_state_file);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002291 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002292 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002293
William Lallemand0f99e342011-10-12 17:50:54 +02002294 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002295 LIST_DELETE(&log->list);
Amaury Denoyelled688e012021-04-20 17:05:47 +02002296 free(log->conf.file);
William Lallemand0f99e342011-10-12 17:50:54 +02002297 free(log);
2298 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002299 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002300 free(wl->s);
Willy Tarreau2b718102021-04-21 07:32:39 +02002301 LIST_DELETE(&wl->list);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002302 free(wl);
2303 }
2304
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002305 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2306 if (bol->must_free)
2307 free((void *)bol->str);
Willy Tarreau2b718102021-04-21 07:32:39 +02002308 LIST_DELETE(&bol->list);
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002309 free(bol);
2310 }
2311
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002312 list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002313 LIST_DELETE(&pxdf->list);
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002314 free(pxdf);
2315 }
2316
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002317 list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002318 LIST_DELETE(&pdf->list);
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002319 free(pdf);
2320 }
2321
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002322 list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002323 LIST_DELETE(&srvdf->list);
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002324 free(srvdf);
2325 }
2326
Tim Duesterhusfc854942020-09-10 19:46:42 +02002327 list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002328 LIST_DELETE(&pcf->list);
Tim Duesterhusfc854942020-09-10 19:46:42 +02002329 free(pcf);
2330 }
2331
Tim Duesterhus34bef072020-07-04 11:49:50 +02002332 list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002333 LIST_DELETE(&pscf->list);
Tim Duesterhus34bef072020-07-04 11:49:50 +02002334 free(pscf);
2335 }
2336
Tim Duesterhus53508d62020-09-10 19:46:40 +02002337 list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002338 LIST_DELETE(&ppcf->list);
Tim Duesterhus53508d62020-09-10 19:46:40 +02002339 free(ppcf);
2340 }
2341
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002342 list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002343 LIST_DELETE(&tif->list);
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002344 free(tif);
2345 }
2346
2347 list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002348 LIST_DELETE(&tdf->list);
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002349 free(tdf);
2350 }
2351
2352 list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002353 LIST_DELETE(&taf->list);
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002354 free(taf);
2355 }
2356
2357 list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
Willy Tarreau2b718102021-04-21 07:32:39 +02002358 LIST_DELETE(&tff->list);
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002359 free(tff);
2360 }
2361
Christopher Fauletff2613e2016-11-09 11:36:17 +01002362 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002363 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002364 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002365} /* end deinit() */
2366
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002367__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002368{
2369 deinit();
2370 exit(status);
2371}
William Lallemand72160322018-11-06 17:37:16 +01002372
Amaury Denoyelled3a88c12021-05-03 10:47:51 +02002373/* Handler of the task of mux_stopping_data.
2374 * Called on soft-stop.
2375 */
2376struct task *mux_stopping_process(struct task *t, void *ctx, unsigned int state)
2377{
2378 struct connection *conn, *back;
2379
2380 list_for_each_entry_safe(conn, back, &mux_stopping_data[tid].list, stopping_list) {
2381 if (conn->mux && conn->mux->wake)
2382 conn->mux->wake(conn);
2383 }
2384
2385 return t;
2386}
2387
Willy Tarreau918ff602011-07-25 16:33:49 +02002388/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002389void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002390{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002391 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002392
Amaury Denoyelled3a88c12021-05-03 10:47:51 +02002393 /* allocates the thread bound mux_stopping_data task */
2394 mux_stopping_data[tid].task = task_new(tid_bit);
2395 mux_stopping_data[tid].task->process = mux_stopping_process;
2396 LIST_INIT(&mux_stopping_data[tid].list);
2397
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002398 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002399 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002400 wake_expired_tasks();
2401
William Lallemand1aab50b2018-06-07 09:46:01 +02002402 /* check if we caught some signals and process them in the
2403 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002404 if (signal_queue_len && tid == 0) {
2405 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002406 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002407 }
2408
2409 /* Process a few tasks */
2410 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002411
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002412 /* also stop if we failed to cleanly stop all tasks */
2413 if (killed > 1)
2414 break;
2415
Willy Tarreau10146c92015-04-13 20:44:19 +02002416 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002417 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002418 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002419 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002420 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002421 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2422 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002423 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002424 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002425 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002426 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002427 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002428 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002429
Willy Tarreau4f46a352020-03-23 09:27:28 +01002430 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002431 int i;
2432
2433 if (stopping) {
Amaury Denoyelled3a88c12021-05-03 10:47:51 +02002434 /* stop muxes before acknowleding stopping */
2435 if (!(stopping_thread_mask & tid_bit)) {
2436 task_wakeup(mux_stopping_data[tid].task, TASK_WOKEN_OTHER);
2437 wake = 1;
2438 }
2439
Willy Tarreau1db42732021-04-06 11:44:07 +02002440 if (_HA_ATOMIC_OR_FETCH(&stopping_thread_mask, tid_bit) == tid_bit) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002441 /* notify all threads that stopping was just set */
2442 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002443 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002444 wake_thread(i);
2445 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002446 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002447
2448 /* stop when there's nothing left to do */
2449 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002450 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2451 /* wake all threads waiting on jobs==0 */
2452 for (i = 0; i < global.nbthread; i++)
2453 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2454 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002455 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002456 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002457 }
2458
Willy Tarreauc49ba522019-12-11 08:12:23 +01002459 /* If we have to sleep, measure how long */
2460 next = wake ? TICK_ETERNITY : next_timer_expiry();
2461
Willy Tarreau58b458d2008-06-29 22:40:23 +02002462 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002463 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002464
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002465 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002466 }
Amaury Denoyelled3a88c12021-05-03 10:47:51 +02002467
2468 task_destroy(mux_stopping_data[tid].task);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002469}
2470
Christopher Faulet1d17c102017-08-29 15:38:48 +02002471static void *run_thread_poll_loop(void *data)
2472{
Willy Tarreau082b6282019-05-22 14:42:12 +02002473 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002474 struct per_thread_init_fct *ptif;
2475 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002476 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002477 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002478 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2479 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002480
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002481 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002482 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002483
Willy Tarreauf6178242019-05-21 19:46:58 +02002484#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002485#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002486 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002487#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002488 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002489#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002490#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002491 /* Now, initialize one thread init at a time. This is better since
2492 * some init code is a bit tricky and may release global resources
2493 * after reallocating them locally. This will also ensure there is
2494 * no race on file descriptors allocation.
2495 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002496#ifdef USE_THREAD
2497 pthread_mutex_lock(&init_mutex);
2498#endif
2499 /* The first thread must set the number of threads left */
2500 if (!init_left)
2501 init_left = global.nbthread;
2502 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002503
Willy Tarreauc4c80fb2021-04-11 15:00:34 +02002504 tv_init_thread_date();
Christopher Faulet1d17c102017-08-29 15:38:48 +02002505
Willy Tarreau082b6282019-05-22 14:42:12 +02002506 /* per-thread alloc calls performed here are not allowed to snoop on
2507 * other threads, so they are free to initialize at their own rhythm
2508 * as long as they act as if they were alone. None of them may rely
2509 * on resources initialized by the other ones.
2510 */
2511 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2512 if (!ptaf->fct()) {
2513 ha_alert("failed to allocate resources for thread %u.\n", tid);
2514 exit(1);
2515 }
2516 }
2517
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002518 /* per-thread init calls performed here are not allowed to snoop on
2519 * other threads, so they are free to initialize at their own rhythm
2520 * as long as they act as if they were alone.
2521 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002522 list_for_each_entry(ptif, &per_thread_init_list, list) {
2523 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002524 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002525 exit(1);
2526 }
2527 }
2528
Willy Tarreau71092822019-06-10 09:51:04 +02002529 /* enabling protocols will result in fd_insert() calls to be performed,
2530 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002531 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002532 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002533 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002534 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002535
Willy Tarreau34a150c2019-06-11 09:16:41 +02002536#ifdef USE_THREAD
2537 pthread_cond_broadcast(&init_cond);
2538 pthread_mutex_unlock(&init_mutex);
2539
2540 /* now wait for other threads to finish starting */
2541 pthread_mutex_lock(&init_mutex);
2542 while (init_left)
2543 pthread_cond_wait(&init_cond, &init_mutex);
2544 pthread_mutex_unlock(&init_mutex);
2545#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002546
Willy Tarreaua45a8b52019-12-06 16:31:45 +01002547#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
2548 /* Let's refrain from using setuid executables. This way the impact of
2549 * an eventual vulnerability in a library remains limited. It may
2550 * impact external checks but who cares about them anyway ? In the
2551 * worst case it's possible to disable the option. Obviously we do this
2552 * in workers only. We can't hard-fail on this one as it really is
2553 * implementation dependent though we're interested in feedback, hence
2554 * the warning.
2555 */
2556 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
2557 static int warn_fail;
Willy Tarreau18515722021-04-06 11:57:41 +02002558 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_FETCH_ADD(&warn_fail, 1)) {
Willy Tarreaua45a8b52019-12-06 16:31:45 +01002559 ha_warning("Failed to disable setuid, please report to developers with detailed "
2560 "information about your operating system. You can silence this warning "
2561 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
2562 }
2563 }
2564#endif
2565
Willy Tarreaud96f1122019-12-03 07:07:36 +01002566#if defined(RLIMIT_NPROC)
2567 /* all threads have started, it's now time to prevent any new thread
2568 * or process from starting. Obviously we do this in workers only. We
2569 * can't hard-fail on this one as it really is implementation dependent
2570 * though we're interested in feedback, hence the warning.
2571 */
2572 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
2573 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
2574 static int warn_fail;
2575
Willy Tarreau18515722021-04-06 11:57:41 +02002576 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_FETCH_ADD(&warn_fail, 1)) {
Willy Tarreaud96f1122019-12-03 07:07:36 +01002577 ha_warning("Failed to disable forks, please report to developers with detailed "
2578 "information about your operating system. You can silence this warning "
2579 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
2580 }
2581 }
2582#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02002583 run_poll_loop();
2584
2585 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2586 ptdf->fct();
2587
Willy Tarreau082b6282019-05-22 14:42:12 +02002588 list_for_each_entry(ptff, &per_thread_free_list, list)
2589 ptff->fct();
2590
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002591#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002592 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002593 if (tid > 0)
2594 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002595#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002596 return NULL;
2597}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002598
William Dauchyf9af9d72019-11-17 15:47:16 +01002599/* set uid/gid depending on global settings */
2600static void set_identity(const char *program_name)
2601{
2602 if (global.gid) {
2603 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2604 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2605 " without 'uid'/'user' is generally useless.\n", program_name);
2606
2607 if (setgid(global.gid) == -1) {
2608 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
2609 protocol_unbind_all();
2610 exit(1);
2611 }
2612 }
2613
2614 if (global.uid && setuid(global.uid) == -1) {
2615 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
2616 protocol_unbind_all();
2617 exit(1);
2618 }
2619}
2620
Willy Tarreaubaaee002006-06-26 02:48:02 +02002621int main(int argc, char **argv)
2622{
2623 int err, retry;
2624 struct rlimit limit;
Willy Tarreau269ab312012-09-05 08:02:48 +02002625 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002626
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002627 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002628
Willy Tarreauff9c9142019-02-07 10:39:36 +01002629 /* this can only safely be done here, though it's optimized away by
2630 * the compiler.
2631 */
2632 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2633 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2634 "HAProxy was built with value %d, please fix it and rebuild.\n",
2635 LONGBITS, MAX_PROCS);
2636 exit(1);
2637 }
2638
Willy Tarreaubf696402019-03-01 10:09:28 +01002639 /* take a copy of initial limits before we possibly change them */
2640 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau2bd0f812020-10-13 15:36:08 +02002641
2642 if (limit.rlim_max == RLIM_INFINITY)
2643 limit.rlim_max = limit.rlim_cur;
Willy Tarreaubf696402019-03-01 10:09:28 +01002644 rlim_fd_cur_at_boot = limit.rlim_cur;
2645 rlim_fd_max_at_boot = limit.rlim_max;
2646
Willy Tarreau5794fb02018-11-25 18:43:29 +01002647 /* process all initcalls in order of potential dependency */
2648 RUN_INITCALLS(STG_PREPARE);
2649 RUN_INITCALLS(STG_LOCK);
2650 RUN_INITCALLS(STG_ALLOC);
2651 RUN_INITCALLS(STG_POOL);
2652 RUN_INITCALLS(STG_REGISTER);
2653 RUN_INITCALLS(STG_INIT);
2654
Emeric Bruncf20bf12010-10-22 16:06:11 +02002655 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002656 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2657 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2658 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002659 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002660
Willy Tarreaue437c442010-03-17 18:02:46 +01002661 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2662 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2663 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002664 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002665 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002666
Willy Tarreaudc23a922011-02-16 11:10:36 +01002667 /* ulimits */
2668 if (!global.rlimit_nofile)
2669 global.rlimit_nofile = global.maxsock;
2670
2671 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002672 limit.rlim_cur = global.rlimit_nofile;
2673 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2674
Willy Tarreaudc23a922011-02-16 11:10:36 +01002675 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002676 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01002677 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2678 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
2679 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Jerome Magnin50f757c2021-01-12 20:19:38 +01002680 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01002681 }
2682 else {
2683 /* try to set it to the max possible at least */
2684 limit.rlim_cur = limit.rlim_max;
2685 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2686 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002687
William Dauchya5194602020-03-28 19:29:58 +01002688 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01002689 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
2690 global.rlimit_nofile = limit.rlim_cur;
2691 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01002692 }
2693 }
2694
2695 if (global.rlimit_memmax) {
2696 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002697 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002698#ifdef RLIMIT_AS
2699 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01002700 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2701 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2702 argv[0], global.rlimit_memmax);
Jerome Magnin50f757c2021-01-12 20:19:38 +01002703 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01002704 }
2705 else
William Dauchya5194602020-03-28 19:29:58 +01002706 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01002707 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002708 }
2709#else
2710 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01002711 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2712 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2713 argv[0], global.rlimit_memmax);
Jerome Magnin50f757c2021-01-12 20:19:38 +01002714 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01002715 }
2716 else
William Dauchya5194602020-03-28 19:29:58 +01002717 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01002718 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002719 }
2720#endif
2721 }
2722
Olivier Houchardf73629d2017-04-05 22:33:04 +02002723 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002724 if (strcmp("/dev/null", old_unixsocket) != 0) {
Willy Tarreau42961742020-08-28 18:42:45 +02002725 if (sock_get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002726 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002727 if (!(global.mode & MODE_MWORKER))
2728 exit(1);
2729 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002730 }
2731 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002732 get_cur_unixsocket();
2733
Willy Tarreaubaaee002006-06-26 02:48:02 +02002734 /* We will loop at most 100 times with 10 ms delay each time.
2735 * That's at most 1 second. We only send a signal to old pids
2736 * if we cannot grab at least one port.
2737 */
2738 retry = MAX_START_RETRIES;
2739 err = ERR_NONE;
2740 while (retry >= 0) {
2741 struct timeval w;
Willy Tarreaue91bff22020-09-02 11:11:43 +02002742 err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002743 /* exit the loop on no error or fatal error */
2744 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002745 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002746 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002747 break;
2748
2749 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2750 * listening sockets. So on those platforms, it would be wiser to
2751 * simply send SIGUSR1, which will not be undoable.
2752 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002753 if (tell_old_pids(SIGTTOU) == 0) {
2754 /* no need to wait if we can't contact old pids */
2755 retry = 0;
2756 continue;
2757 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002758 /* give some time to old processes to stop listening */
2759 w.tv_sec = 0;
2760 w.tv_usec = 10*1000;
2761 select(0, NULL, NULL, NULL, &w);
2762 retry--;
2763 }
2764
Willy Tarreaue91bff22020-09-02 11:11:43 +02002765 /* Note: protocol_bind_all() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002766 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaue91bff22020-09-02 11:11:43 +02002767 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreauf68da462009-06-09 14:36:00 +02002768 if (retry != MAX_START_RETRIES && nb_oldpids) {
2769 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002770 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002771 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002772 exit(1);
2773 }
2774
William Lallemand944e6192018-11-21 15:48:31 +01002775 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002776 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002777 /* Note: we don't have to send anything to the old pids because we
2778 * never stopped them. */
2779 exit(1);
2780 }
2781
Willy Tarreaue91bff22020-09-02 11:11:43 +02002782 /* Ok, all listeners should now be bound, close any leftover sockets
Olivier Houchardf73629d2017-04-05 22:33:04 +02002783 * the previous process gave us, we don't need them anymore
2784 */
2785 while (xfer_sock_list != NULL) {
2786 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2787 close(xfer_sock_list->fd);
2788 free(xfer_sock_list->iface);
2789 free(xfer_sock_list->namespace);
2790 free(xfer_sock_list);
2791 xfer_sock_list = tmpxfer;
2792 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002793
Willy Tarreaubaaee002006-06-26 02:48:02 +02002794 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002795 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2796 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002797
Willy Tarreaubaaee002006-06-26 02:48:02 +02002798 /* MODE_QUIET can inhibit alerts and warnings below this line */
2799
PiBa-NL149a81a2017-12-25 21:03:31 +01002800 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2801 /* either stdin/out/err are already closed or should stay as they are. */
2802 if ((global.mode & MODE_DAEMON)) {
2803 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2804 global.mode &= ~MODE_VERBOSE;
2805 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2806 }
2807 } else {
2808 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2809 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002810 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002811 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002812 }
2813
2814 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002815 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002816 unlink(global.pidfile);
2817 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2818 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002819 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002820 if (nb_oldpids)
2821 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002822 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002823 exit(1);
2824 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002825 }
2826
Willy Tarreaub38651a2007-03-24 17:24:39 +01002827 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002828 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2829 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002830 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002831 exit(1);
2832 }
2833
Jackie Tapia749f74c2020-07-22 18:59:40 -05002834 /* If the user is not root, we'll still let them try the configuration
2835 * but we inform them that unexpected behaviour may occur.
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002836 */
2837 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002838 ha_warning("[%s.main()] Some options which require full privileges"
2839 " might not work well.\n"
2840 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002841
William Lallemand095ba4c2017-06-01 17:38:50 +02002842 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2843
2844 /* chroot if needed */
2845 if (global.chroot != NULL) {
2846 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002847 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002848 if (nb_oldpids)
2849 tell_old_pids(SIGTTIN);
2850 protocol_unbind_all();
2851 exit(1);
2852 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002853 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002854 }
2855
William Lallemand944e6192018-11-21 15:48:31 +01002856 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02002857 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002858
William Lallemand27edc4b2019-05-07 17:49:33 +02002859 /* send a SIGTERM to workers who have a too high reloads number */
2860 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
2861 mworker_kill_max_reloads(SIGTERM);
2862
Willy Tarreaubaaee002006-06-26 02:48:02 +02002863 /* Note that any error at this stage will be fatal because we will not
2864 * be able to restart the old pids.
2865 */
2866
William Dauchyf9af9d72019-11-17 15:47:16 +01002867 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
2868 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02002869
Willy Tarreaubaaee002006-06-26 02:48:02 +02002870 /* check ulimits */
2871 limit.rlim_cur = limit.rlim_max = 0;
2872 getrlimit(RLIMIT_NOFILE, &limit);
2873 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01002874 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2875 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
2876 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
2877 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
2878 global.maxsock);
Jerome Magnin50f757c2021-01-12 20:19:38 +01002879 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01002880 }
2881 else
2882 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
William Dauchya5194602020-03-28 19:29:58 +01002883 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01002884 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
2885 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002886 }
2887
William Lallemand944e6192018-11-21 15:48:31 +01002888 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002889 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002890 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002891 int ret = 0;
2892 int proc;
William Lallemande1340412017-12-28 16:09:36 +01002893 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002894
William Lallemand095ba4c2017-06-01 17:38:50 +02002895 /*
2896 * if daemon + mworker: must fork here to let a master
2897 * process live in background before forking children
2898 */
William Lallemand73b85e72017-06-01 17:38:51 +02002899
2900 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2901 && (global.mode & MODE_MWORKER)
2902 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002903 ret = fork();
2904 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002905 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002906 protocol_unbind_all();
2907 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02002908 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02002909 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02002910 } else /* change the process group ID in the child (master process) */
2911 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02002912 }
William Lallemande20b6a62017-06-01 17:38:55 +02002913
William Lallemande20b6a62017-06-01 17:38:55 +02002914
William Lallemanddeed7802017-11-06 11:00:04 +01002915 /* if in master-worker mode, write the PID of the father */
2916 if (global.mode & MODE_MWORKER) {
2917 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02002918 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01002919 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01002920 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01002921 }
2922
Willy Tarreaubaaee002006-06-26 02:48:02 +02002923 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01002924 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02002925 if (global.mode & MODE_MWORKER)
2926 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01002927 for (proc = 0; proc < global.nbproc; proc++) {
2928 ret = fork();
2929 if (ret < 0) {
2930 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
2931 protocol_unbind_all();
2932 exit(1); /* there has been an error */
2933 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01002934 else if (ret == 0) { /* child breaks here */
2935 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01002936 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01002937 }
William Lallemand944e6192018-11-21 15:48:31 +01002938 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
2939 char pidstr[100];
2940 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01002941 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01002942 }
2943 if (global.mode & MODE_MWORKER) {
2944 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02002945
William Lallemand220567e2018-11-21 18:04:53 +01002946 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01002947 /* find the right mworker_proc */
2948 list_for_each_entry(child, &proc_list, list) {
2949 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02002950 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01002951 child->timestamp = now.tv_sec;
2952 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02002953 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01002954 break;
2955 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002956 }
2957 }
William Lallemandbc193052018-09-11 10:06:26 +02002958
William Lallemand944e6192018-11-21 15:48:31 +01002959 relative_pid++; /* each child will get a different one */
2960 pid_bit <<= 1;
2961 }
2962 } else {
2963 /* wait mode */
2964 global.nbproc = 1;
2965 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002966 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002967
2968#ifdef USE_CPU_AFFINITY
2969 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01002970 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02002971 ha_cpuset_count(&cpu_map.proc[proc])) { /* only do this if the process has a CPU map */
Olivier Houchard97148f62017-08-16 17:29:11 +02002972
Amaury Denoyelle982fb532021-04-21 18:39:58 +02002973#ifdef __FreeBSD__
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02002974 struct hap_cpuset *set = &cpu_map.proc[proc];
Amaury Denoyelle982fb532021-04-21 18:39:58 +02002975 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(set->cpuset), &set->cpuset);
David Carlier2d0493a2020-12-02 21:14:51 +00002976#elif defined(__linux__) || defined(__DragonFly__)
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02002977 struct hap_cpuset *set = &cpu_map.proc[proc];
Amaury Denoyelle982fb532021-04-21 18:39:58 +02002978 sched_setaffinity(0, sizeof(set->cpuset), &set->cpuset);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002979#endif
Amaury Denoyelle982fb532021-04-21 18:39:58 +02002980 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002981#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02002982 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02002983 if (pidfd >= 0) {
2984 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
2985 close(pidfd);
2986 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02002987
2988 /* We won't ever use this anymore */
Willy Tarreau61cfdf42021-02-20 10:46:51 +01002989 ha_free(&global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002990
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002991 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01002992 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002993
2994 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2995 (global.mode & MODE_DAEMON)) {
2996 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01002997 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
2998 stdio_quiet(-1);
2999
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003000 global.mode &= ~MODE_VERBOSE;
3001 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003002 }
3003
William Lallemandb3f2be32018-09-11 10:06:18 +02003004 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003005 /* should never get there */
3006 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003007 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003008#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003009 ssl_free_dh();
3010#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003011 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003012 }
3013
William Lallemandcb11fd22017-06-01 17:38:52 +02003014 /* child must never use the atexit function */
3015 atexit_flag = 0;
3016
William Lallemandbc193052018-09-11 10:06:26 +02003017 /* close useless master sockets */
3018 if (global.mode & MODE_MWORKER) {
3019 struct mworker_proc *child, *it;
3020 master = 0;
3021
William Lallemand309dc9a2018-10-26 14:47:45 +02003022 mworker_cli_proxy_stop();
3023
William Lallemandbc193052018-09-11 10:06:26 +02003024 /* free proc struct of other processes */
3025 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003026 /* close the FD of the master side for all
3027 * workers, we don't need to close the worker
3028 * side of other workers since it's done with
3029 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003030 if (child->ipc_fd[0] >= 0)
3031 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003032 if (child->relative_pid == relative_pid &&
3033 child->reloads == 0) {
3034 /* keep this struct if this is our pid */
3035 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003036 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003037 }
Willy Tarreau2b718102021-04-21 07:32:39 +02003038 LIST_DELETE(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003039 mworker_free_child(child);
3040 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003041 }
3042 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003043
William Lallemande1340412017-12-28 16:09:36 +01003044 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3045 devnullfd = open("/dev/null", O_RDWR, 0);
3046 if (devnullfd < 0) {
3047 ha_alert("Cannot open /dev/null\n");
3048 exit(EXIT_FAILURE);
3049 }
3050 }
3051
William Lallemand095ba4c2017-06-01 17:38:50 +02003052 /* Must chroot and setgid/setuid in the children */
3053 /* chroot if needed */
3054 if (global.chroot != NULL) {
3055 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003056 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003057 if (nb_oldpids)
3058 tell_old_pids(SIGTTIN);
3059 protocol_unbind_all();
3060 exit(1);
3061 }
3062 }
3063
Willy Tarreau61cfdf42021-02-20 10:46:51 +01003064 ha_free(&global.chroot);
William Dauchyf9af9d72019-11-17 15:47:16 +01003065 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003066
William Lallemand7f80eb22017-05-26 18:19:55 +02003067 /* pass through every cli socket, and check if it's bound to
3068 * the current process and if it exposes listeners sockets.
3069 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3070 * */
3071
Willy Tarreau4975d142021-03-13 11:00:33 +01003072 if (global.cli_fe) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003073 struct bind_conf *bind_conf;
3074
Willy Tarreau4975d142021-03-13 11:00:33 +01003075 list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003076 if (bind_conf->level & ACCESS_FD_LISTENERS) {
Willy Tarreaue26993c2020-09-03 07:18:55 +02003077 if (!bind_conf->settings.bind_proc || bind_conf->settings.bind_proc & (1UL << proc)) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003078 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3079 break;
3080 }
3081 }
3082 }
3083 }
3084
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003085 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003086 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003087 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003088 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003089 if (!(px->bind_proc & (1UL << proc)))
3090 stop_proxy(px);
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003091 }
3092 px = px->next;
3093 }
3094
Emeric Brunc47ba592020-10-07 10:13:10 +02003095 /* we might have to unbind some log forward proxies from some processes */
3096 px = cfg_log_forward;
3097 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003098 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003099 if (!(px->bind_proc & (1UL << proc)))
3100 stop_proxy(px);
Emeric Brunc47ba592020-10-07 10:13:10 +02003101 }
3102 px = px->next;
3103 }
3104
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003105 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003106 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003107 if (!curpeers->peers_fe)
3108 continue;
3109
3110 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3111 continue;
3112
3113 stop_proxy(curpeers->peers_fe);
3114 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003115 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003116 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003117 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003118 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003119 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003120 curpeers->peers_fe = NULL;
3121 }
3122
William Lallemand2e8fad92018-11-13 16:18:23 +01003123 /*
3124 * This is only done in daemon mode because we might want the
3125 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3126 * we should now close the 3 first FDs to ensure that we can
3127 * detach from the TTY. We MUST NOT do it in other cases since
3128 * it would have already be done, and 0-2 would have been
3129 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003130 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003131 if ((global.mode & MODE_DAEMON) &&
3132 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003133 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003134 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003135 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003136 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3137 }
3138 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003139 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3140 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003141 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003142 }
3143
William Dauchye039f262019-11-17 15:47:15 +01003144 /* try our best to re-enable core dumps depending on system capabilities.
3145 * What is addressed here :
3146 * - remove file size limits
3147 * - remove core size limits
3148 * - mark the process dumpable again if it lost it due to user/group
3149 */
3150 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3151 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3152
3153#if defined(RLIMIT_FSIZE)
3154 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3155 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3156 ha_alert("[%s.main()] Failed to set the raise the maximum "
3157 "file size.\n", argv[0]);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003158 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003159 }
3160 else
3161 ha_warning("[%s.main()] Failed to set the raise the maximum "
William Dauchya5194602020-03-28 19:29:58 +01003162 "file size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003163 }
3164#endif
3165
3166#if defined(RLIMIT_CORE)
3167 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3168 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3169 ha_alert("[%s.main()] Failed to set the raise the core "
3170 "dump size.\n", argv[0]);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003171 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003172 }
3173 else
3174 ha_warning("[%s.main()] Failed to set the raise the core "
William Dauchya5194602020-03-28 19:29:58 +01003175 "dump size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003176 }
3177#endif
3178
3179#if defined(USE_PRCTL)
3180 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3181 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3182 "no core will be dumped.\n", argv[0]);
3183#endif
3184 }
3185
Christopher Faulete3a5e352017-10-24 13:53:54 +02003186 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003187 /*
3188 * That's it : the central polling loop. Run until we stop.
3189 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003190#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003191 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003192 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003193 int i;
3194
William Lallemand1aab50b2018-06-07 09:46:01 +02003195 /* ensure the signals will be blocked in every thread */
3196 sigfillset(&blocked_sig);
3197 sigdelset(&blocked_sig, SIGPROF);
3198 sigdelset(&blocked_sig, SIGBUS);
3199 sigdelset(&blocked_sig, SIGFPE);
3200 sigdelset(&blocked_sig, SIGILL);
3201 sigdelset(&blocked_sig, SIGSEGV);
3202 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3203
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003204 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003205 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003206 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003207 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003208
Christopher Faulet62519022017-10-16 15:49:32 +02003209#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003210 /* Now the CPU affinity for all threads */
Amaury Denoyelleaf02c572021-04-15 16:29:58 +02003211
3212 /* If on multiprocess, use proc_t1 except for the first process.
3213 */
3214 if ((relative_pid - 1) > 0)
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02003215 cpu_map.thread[0] = cpu_map.proc_t1[relative_pid-1];
Willy Tarreau7764a572019-07-16 15:10:34 +02003216
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003217 for (i = 0; i < global.nbthread; i++) {
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02003218 if (ha_cpuset_count(&cpu_map.proc[relative_pid-1]))
3219 ha_cpuset_and(&cpu_map.thread[i], &cpu_map.proc[relative_pid-1]);
Christopher Faulet62519022017-10-16 15:49:32 +02003220
Willy Tarreau421f02e2018-01-20 18:19:22 +01003221 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02003222 ha_cpuset_count(&cpu_map.thread[i])) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003223#if defined(__APPLE__)
3224 int j;
Amaury Denoyelle8f685c12021-04-27 16:45:29 +02003225 unsigned long set = cpu_map.thread[i].cpuset;
David Carlier5e4c8e22019-09-13 05:12:58 +01003226
Amaury Denoyelle8f685c12021-04-27 16:45:29 +02003227 while ((j = ffsl(set)) > 0) {
David Carlier5e4c8e22019-09-13 05:12:58 +01003228 thread_affinity_policy_data_t cpu_set = { j - 1 };
3229 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3230 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
Amaury Denoyelle8f685c12021-04-27 16:45:29 +02003231 set &= ~(1UL << (j - 1));
David Carlier5e4c8e22019-09-13 05:12:58 +01003232 }
3233#else
Amaury Denoyellefc6ac532021-04-27 10:46:36 +02003234 struct hap_cpuset *set = &cpu_map.thread[i];
David Carliera92c5ce2019-09-13 05:03:12 +01003235 pthread_setaffinity_np(ha_thread_info[i].pthread,
Amaury Denoyelle982fb532021-04-21 18:39:58 +02003236 sizeof(set->cpuset), &set->cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003237#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003238 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003239 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003240#endif /* !USE_CPU_AFFINITY */
3241
William Lallemand1aab50b2018-06-07 09:46:01 +02003242 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003243 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003244
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003245 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003246 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003247
3248 /* Wait the end of other threads */
3249 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003250 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003251
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003252#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3253 show_lock_stats();
3254#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003255 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003256#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003257 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003258 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003259#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003260
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003261 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003262}
3263
Willy Tarreaubaaee002006-06-26 02:48:02 +02003264/*
3265 * Local variables:
3266 * c-indent-level: 8
3267 * c-basic-offset: 8
3268 * End:
3269 */