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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>
83#include <haproxy/activity.h>
84#include <haproxy/api.h>
85#include <haproxy/arg.h>
86#include <haproxy/auth.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020087#include <haproxy/base64.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020088#include <haproxy/capture-t.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020089#include <haproxy/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020090#include <haproxy/chunk.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020091#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020092#include <haproxy/connection.h>
Willy Tarreaueb92deb2020-06-04 10:53:16 +020093#include <haproxy/dns.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020094#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020095#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020096#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +020097#include <haproxy/filters.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020098#include <haproxy/global.h>
Willy Tarreau86416052020-06-04 09:20:54 +020099#include <haproxy/hlua.h>
Willy Tarreauc761f842020-06-04 11:40:28 +0200100#include <haproxy/http_rules.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200101#include <haproxy/list.h>
Willy Tarreau213e9902020-06-04 14:58:24 +0200102#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +0200103#include <haproxy/log.h>
Willy Tarreaub5abe5b2020-06-04 14:07:37 +0200104#include <haproxy/mworker.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +0200105#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +0200106#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +0200107#include <haproxy/openssl-compat.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200108#include <haproxy/pattern.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +0200109#include <haproxy/peers.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200110#include <haproxy/pool.h>
111#include <haproxy/protocol.h>
Willy Tarreaubf3b06b2020-08-26 10:23:40 +0200112#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200113#include <haproxy/proxy.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +0200114#include <haproxy/regex.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200115#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +0200116#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +0200117#include <haproxy/session.h>
Willy Tarreau3727a8a2020-06-04 17:37:26 +0200118#include <haproxy/signal.h>
Willy Tarreau063d47d2020-08-28 16:29:53 +0200119#include <haproxy/sock.h>
Willy Tarreau25140cc2020-08-28 15:40:33 +0200120#include <haproxy/sock_inet.h>
Willy Tarreau209108d2020-06-04 20:30:20 +0200121#include <haproxy/ssl_sock.h>
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +0200122#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +0200123#include <haproxy/stream.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +0200124#include <haproxy/task.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +0200125#include <haproxy/thread.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200126#include <haproxy/time.h>
127#include <haproxy/tools.h>
128#include <haproxy/uri_auth-t.h>
Willy Tarreaua1718922020-06-04 16:25:31 +0200129#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200130#include <haproxy/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200131
Willy Tarreaubaaee002006-06-26 02:48:02 +0200132
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100133/* array of init calls for older platforms */
134DECLARE_INIT_STAGES;
135
Willy Tarreau477ecd82010-01-03 21:12:30 +0100136/* list of config files */
137static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200138int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100139int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100140unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100141unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200142
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100143volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100144volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100145
Willy Tarreaubaaee002006-06-26 02:48:02 +0200146/* global options */
147struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100148 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100149 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100150 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200151 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200152 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100153 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100154 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100155 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200156 .unix_bind = {
157 .ux = {
158 .uid = -1,
159 .gid = -1,
160 .mode = 0,
161 }
162 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200163 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100164 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100165 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100166 .maxrewrite = MAXREWRITE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100167 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200168 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200169 .pool_low_ratio = 20,
170 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200171 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200172#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100173 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200174#endif
William Lallemandf3747832012-11-09 12:33:10 +0100175 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100176#ifdef DEFAULT_IDLE_TIMER
177 .idle_timer = DEFAULT_IDLE_TIMER,
178#else
179 .idle_timer = 1000, /* 1 second */
180#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200181 },
Emeric Brun76d88952012-10-05 15:47:31 +0200182#ifdef USE_OPENSSL
183#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200184 .maxsslconn = DEFAULT_MAXSSLCONN,
185#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200186#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200187 /* others NULL OK */
188};
189
190/*********************************************************************/
191
192int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100193int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200194int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100195int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100196int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100197int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200198
Ilya Shipitsin46a030c2020-07-05 16:36:08 +0500199/* Here we store information about the pids of the processes we may pause
Willy Tarreaubaaee002006-06-26 02:48:02 +0200200 * or kill. We will send them a signal every 10 ms until we can bind to all
201 * our ports. With 200 retries, that's about 2 seconds.
202 */
203#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200204static int *oldpids = NULL;
205static int oldpids_sig; /* use USR1 or TERM */
206
Olivier Houchardf73629d2017-04-05 22:33:04 +0200207/* Path to the unix socket we use to retrieve listener sockets from the old process */
208static const char *old_unixsocket;
209
William Lallemand85b0bd92017-06-01 17:38:53 +0200210static char *cur_unixsocket = NULL;
211
William Lallemandcb11fd22017-06-01 17:38:52 +0200212int atexit_flag = 0;
213
Willy Tarreaubb545b42010-08-25 12:58:59 +0200214int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200215const int zero = 0;
216const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200217const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200218
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100219char hostname[MAX_HOSTNAME_LEN];
Dragan Dosen4f014152020-06-18 16:56:47 +0200220char *localpeer = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200221
William Lallemand00417412020-06-05 14:08:41 +0200222static char **old_argv = NULL; /* previous argv but cleaned up */
William Lallemand73b85e72017-06-01 17:38:51 +0200223
William Lallemandbc193052018-09-11 10:06:26 +0200224struct list proc_list = LIST_HEAD_INIT(proc_list);
225
226int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100227unsigned int rlim_fd_cur_at_boot = 0;
228unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200229
Willy Tarreau6c3a6812020-03-06 18:57:15 +0100230/* per-boot randomness */
231unsigned char boot_seed[20]; /* per-boot random seed (160 bits initially) */
232
William Lallemand16dd1b32018-11-19 18:46:18 +0100233struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200234
William Lallemandb3f2be32018-09-11 10:06:18 +0200235static void *run_thread_poll_loop(void *data);
236
Willy Tarreauff055502014-04-28 22:27:06 +0200237/* bitfield of a few warnings to emit just once (WARN_*) */
238unsigned int warned = 0;
239
William Lallemande7361152018-10-26 14:47:36 +0200240/* master CLI configuration (-S flag) */
241struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100242
243/* These are strings to be reported in the output of "haproxy -vv". They may
244 * either be constants (in which case must_free must be zero) or dynamically
245 * allocated strings to pass to free() on exit, and in this case must_free
246 * must be non-zero.
247 */
248struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
249struct build_opts_str {
250 struct list list;
251 const char *str;
252 int must_free;
253};
254
Willy Tarreaue6945732016-12-21 19:57:00 +0100255/* These functions are called just after the point where the program exits
256 * after a config validity check, so they are generally suited for resource
257 * allocation and slow initializations that should be skipped during basic
258 * config checks. The functions must return 0 on success, or a combination
259 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
260 * and immediate exit, so the function must have emitted any useful error.
261 */
262struct list post_check_list = LIST_HEAD_INIT(post_check_list);
263struct post_check_fct {
264 struct list list;
265 int (*fct)();
266};
267
Christopher Fauletc1692962019-08-12 09:51:07 +0200268/* These functions are called for each proxy just after the config validity
269 * check. The functions must return 0 on success, or a combination of ERR_*
270 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
271 * exit, so the function must have emitted any useful error.
272 */
273struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
274struct post_proxy_check_fct {
275 struct list list;
276 int (*fct)(struct proxy *);
277};
278
279/* These functions are called for each server just after the config validity
280 * check. The functions must return 0 on success, or a combination of ERR_*
281 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
282 * exit, so the function must have emitted any useful error.
283 */
284struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
285struct post_server_check_fct {
286 struct list list;
287 int (*fct)(struct server *);
288};
289
Willy Tarreau082b6282019-05-22 14:42:12 +0200290/* These functions are called for each thread just after the thread creation
291 * and before running the init functions. They should be used to do per-thread
292 * (re-)allocations that are needed by subsequent functoins. They must return 0
293 * if an error occurred. */
294struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
295struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100296 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200297 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100298};
299
Christopher Faulet415f6112017-07-25 16:52:58 +0200300/* These functions are called for each thread just after the thread creation
301 * and before running the scheduler. They should be used to do per-thread
302 * initializations. They must return 0 if an error occurred. */
303struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
304struct per_thread_init_fct {
305 struct list list;
306 int (*fct)();
307};
308
Willy Tarreau082b6282019-05-22 14:42:12 +0200309/* These functions are called when freeing the global sections at the end of
310 * deinit, after everything is stopped. They don't return anything. They should
311 * not release shared resources that are possibly used by other deinit
312 * functions, only close/release what is private. Use the per_thread_free_list
313 * to release shared resources.
314 */
315struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
316struct post_deinit_fct {
317 struct list list;
318 void (*fct)();
319};
320
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200321/* These functions are called when freeing a proxy during the deinit, after
322 * everything isg stopped. They don't return anything. They should not release
323 * the proxy itself or any shared resources that are possibly used by other
324 * deinit functions, only close/release what is private.
325 */
326struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
327struct proxy_deinit_fct {
328 struct list list;
329 void (*fct)(struct proxy *);
330};
331
332/* These functions are called when freeing a server during the deinit, after
333 * everything isg stopped. They don't return anything. They should not release
334 * the proxy itself or any shared resources that are possibly used by other
335 * deinit functions, only close/release what is private.
336 */
337struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
338struct server_deinit_fct {
339 struct list list;
340 void (*fct)(struct server *);
341};
342
Willy Tarreau082b6282019-05-22 14:42:12 +0200343/* These functions are called when freeing the global sections at the end of
344 * deinit, after the thread deinit functions, to release unneeded memory
345 * allocations. They don't return anything, and they work in best effort mode
346 * as their sole goal is to make valgrind mostly happy.
347 */
348struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
349struct per_thread_free_fct {
350 struct list list;
Christopher Faulet83fefbc2020-11-06 15:19:19 +0100351 void (*fct)();
Willy Tarreau082b6282019-05-22 14:42:12 +0200352};
353
Christopher Faulet415f6112017-07-25 16:52:58 +0200354/* These functions are called for each thread just after the scheduler loop and
355 * before exiting the thread. They don't return anything and, as for post-deinit
356 * functions, they work in best effort mode as their sole goal is to make
357 * valgrind mostly happy. */
358struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
359struct per_thread_deinit_fct {
360 struct list list;
361 void (*fct)();
362};
363
Willy Tarreaubaaee002006-06-26 02:48:02 +0200364/*********************************************************************/
365/* general purpose functions ***************************************/
366/*********************************************************************/
367
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100368/* used to register some build option strings at boot. Set must_free to
369 * non-zero if the string must be freed upon exit.
370 */
371void hap_register_build_opts(const char *str, int must_free)
372{
373 struct build_opts_str *b;
374
375 b = calloc(1, sizeof(*b));
376 if (!b) {
377 fprintf(stderr, "out of memory\n");
378 exit(1);
379 }
380 b->str = str;
381 b->must_free = must_free;
382 LIST_ADDQ(&build_opts_list, &b->list);
383}
384
Willy Tarreaue6945732016-12-21 19:57:00 +0100385/* used to register some initialization functions to call after the checks. */
386void hap_register_post_check(int (*fct)())
387{
388 struct post_check_fct *b;
389
390 b = calloc(1, sizeof(*b));
391 if (!b) {
392 fprintf(stderr, "out of memory\n");
393 exit(1);
394 }
395 b->fct = fct;
396 LIST_ADDQ(&post_check_list, &b->list);
397}
398
Christopher Fauletc1692962019-08-12 09:51:07 +0200399/* used to register some initialization functions to call for each proxy after
400 * the checks.
401 */
402void hap_register_post_proxy_check(int (*fct)(struct proxy *))
403{
404 struct post_proxy_check_fct *b;
405
406 b = calloc(1, sizeof(*b));
407 if (!b) {
408 fprintf(stderr, "out of memory\n");
409 exit(1);
410 }
411 b->fct = fct;
412 LIST_ADDQ(&post_proxy_check_list, &b->list);
413}
414
415/* used to register some initialization functions to call for each server after
416 * the checks.
417 */
418void hap_register_post_server_check(int (*fct)(struct server *))
419{
420 struct post_server_check_fct *b;
421
422 b = calloc(1, sizeof(*b));
423 if (!b) {
424 fprintf(stderr, "out of memory\n");
425 exit(1);
426 }
427 b->fct = fct;
428 LIST_ADDQ(&post_server_check_list, &b->list);
429}
430
Willy Tarreau05554e62016-12-21 20:46:26 +0100431/* used to register some de-initialization functions to call after everything
432 * has stopped.
433 */
434void hap_register_post_deinit(void (*fct)())
435{
436 struct post_deinit_fct *b;
437
438 b = calloc(1, sizeof(*b));
439 if (!b) {
440 fprintf(stderr, "out of memory\n");
441 exit(1);
442 }
443 b->fct = fct;
444 LIST_ADDQ(&post_deinit_list, &b->list);
445}
446
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200447/* used to register some per proxy de-initialization functions to call after
448 * everything has stopped.
449 */
450void hap_register_proxy_deinit(void (*fct)(struct proxy *))
451{
452 struct proxy_deinit_fct *b;
453
454 b = calloc(1, sizeof(*b));
455 if (!b) {
456 fprintf(stderr, "out of memory\n");
457 exit(1);
458 }
459 b->fct = fct;
460 LIST_ADDQ(&proxy_deinit_list, &b->list);
461}
462
463
464/* used to register some per server de-initialization functions to call after
465 * everything has stopped.
466 */
467void hap_register_server_deinit(void (*fct)(struct server *))
468{
469 struct server_deinit_fct *b;
470
471 b = calloc(1, sizeof(*b));
472 if (!b) {
473 fprintf(stderr, "out of memory\n");
474 exit(1);
475 }
476 b->fct = fct;
477 LIST_ADDQ(&server_deinit_list, &b->list);
478}
479
Willy Tarreau082b6282019-05-22 14:42:12 +0200480/* used to register some allocation functions to call for each thread. */
481void hap_register_per_thread_alloc(int (*fct)())
482{
483 struct per_thread_alloc_fct *b;
484
485 b = calloc(1, sizeof(*b));
486 if (!b) {
487 fprintf(stderr, "out of memory\n");
488 exit(1);
489 }
490 b->fct = fct;
491 LIST_ADDQ(&per_thread_alloc_list, &b->list);
492}
493
Christopher Faulet415f6112017-07-25 16:52:58 +0200494/* used to register some initialization functions to call for each thread. */
495void hap_register_per_thread_init(int (*fct)())
496{
497 struct per_thread_init_fct *b;
498
499 b = calloc(1, sizeof(*b));
500 if (!b) {
501 fprintf(stderr, "out of memory\n");
502 exit(1);
503 }
504 b->fct = fct;
505 LIST_ADDQ(&per_thread_init_list, &b->list);
506}
507
508/* used to register some de-initialization functions to call for each thread. */
509void hap_register_per_thread_deinit(void (*fct)())
510{
511 struct per_thread_deinit_fct *b;
512
513 b = calloc(1, sizeof(*b));
514 if (!b) {
515 fprintf(stderr, "out of memory\n");
516 exit(1);
517 }
518 b->fct = fct;
519 LIST_ADDQ(&per_thread_deinit_list, &b->list);
520}
521
Willy Tarreau082b6282019-05-22 14:42:12 +0200522/* used to register some free functions to call for each thread. */
Christopher Faulet83fefbc2020-11-06 15:19:19 +0100523void hap_register_per_thread_free(void (*fct)())
Willy Tarreau082b6282019-05-22 14:42:12 +0200524{
525 struct per_thread_free_fct *b;
526
527 b = calloc(1, sizeof(*b));
528 if (!b) {
529 fprintf(stderr, "out of memory\n");
530 exit(1);
531 }
532 b->fct = fct;
533 LIST_ADDQ(&per_thread_free_list, &b->list);
534}
535
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100536static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200537{
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200538 struct utsname utsname;
539
Willy Tarreau08dd2022019-11-21 18:07:30 +0100540 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
541 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100542
543 if (strlen(PRODUCT_URL_BUGS) > 0) {
544 char base_version[20];
545 int dots = 0;
546 char *del;
547
548 /* only retrieve the base version without distro-specific extensions */
549 for (del = haproxy_version; *del; del++) {
550 if (*del == '.')
551 dots++;
552 else if (*del < '0' || *del > '9')
553 break;
554 }
555
556 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
557 if (dots < 2)
558 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
559 else
560 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
561 }
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200562
563 if (uname(&utsname) == 0) {
564 printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
565 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200566}
567
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100568static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100569{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100570 struct build_opts_str *item;
571
Willy Tarreau7b066db2007-12-02 11:28:59 +0100572 printf("Build options :"
573#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100574 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100575#endif
576#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100577 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100578#endif
579#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100580 "\n CC = " BUILD_CC
581#endif
582#ifdef BUILD_CFLAGS
583 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100584#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100585#ifdef BUILD_OPTIONS
586 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100587#endif
Tim Duesterhusc8d19702020-11-21 18:07:59 +0100588#ifdef BUILD_DEBUG
589 "\n DEBUG = " BUILD_DEBUG
590#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100591#ifdef BUILD_FEATURES
592 "\n\nFeature list : " BUILD_FEATURES
593#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200594 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100595 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200596 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100597 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200598
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100599 list_for_each_entry(item, &build_opts_list, list) {
600 puts(item->str);
601 }
602
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100603 putchar('\n');
604
Willy Tarreaube5b6852009-10-03 18:57:08 +0200605 list_pollers(stdout);
606 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200607 list_mux_proto(stdout);
608 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100609 list_services(stdout);
610 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100611 list_filters(stdout);
612 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100613}
614
Willy Tarreaubaaee002006-06-26 02:48:02 +0200615/*
616 * This function prints the command line usage and exits
617 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100618static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200619{
620 display_version();
621 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200622 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200623 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200624 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100625 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200626 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200627 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200628 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200629 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200630 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100631#if defined(USE_SYSTEMD)
632 " -Ws master-worker mode with systemd notify support.\n"
633#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200634 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200635 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100636 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200637 " -m limits the usable amount of memory (in MB)\n"
638 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200639 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200640 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200641#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200642 " -de disables epoll() usage even when available\n"
643#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200644#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200645 " -dk disables kqueue() usage even when available\n"
646#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200647#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000648 " -dv disables event ports usage even when available\n"
649#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200650#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200651 " -dp disables poll() usage even when available\n"
652#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200653#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100654 " -dS disables splice usage (broken on old kernels)\n"
655#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200656#if defined(USE_GETADDRINFO)
657 " -dG disables getaddrinfo() usage\n"
658#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000659#if defined(SO_REUSEPORT)
660 " -dR disables SO_REUSEPORT usage\n"
661#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100662 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100663 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200664 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200665 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200666 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200667 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200668 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100669 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200670 exit(1);
671}
672
673
674
675/*********************************************************************/
676/* more specific functions ***************************************/
677/*********************************************************************/
678
William Lallemand73b85e72017-06-01 17:38:51 +0200679/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
680 * pids the signal was correctly delivered to.
681 */
William Lallemande25473c2019-04-01 11:29:56 +0200682int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200683{
684 int p;
685 int ret = 0;
686 for (p = 0; p < nb_oldpids; p++)
687 if (kill(oldpids[p], sig) == 0)
688 ret++;
689 return ret;
690}
691
William Lallemand75ea0a02017-11-15 19:02:58 +0100692/*
William Lallemand73b85e72017-06-01 17:38:51 +0200693 * remove a pid forom the olpid array and decrease nb_oldpids
694 * return 1 pid was found otherwise return 0
695 */
696
697int delete_oldpid(int pid)
698{
699 int i;
700
701 for (i = 0; i < nb_oldpids; i++) {
702 if (oldpids[i] == pid) {
703 oldpids[i] = oldpids[nb_oldpids - 1];
704 oldpids[nb_oldpids - 1] = 0;
705 nb_oldpids--;
706 return 1;
707 }
708 }
709 return 0;
710}
711
William Lallemand85b0bd92017-06-01 17:38:53 +0200712
713static void get_cur_unixsocket()
714{
715 /* if -x was used, try to update the stat socket if not available anymore */
Willy Tarreau4975d142021-03-13 11:00:33 +0100716 if (global.cli_fe) {
William Lallemand85b0bd92017-06-01 17:38:53 +0200717 struct bind_conf *bind_conf;
718
719 /* pass through all stats socket */
Willy Tarreau4975d142021-03-13 11:00:33 +0100720 list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
William Lallemand85b0bd92017-06-01 17:38:53 +0200721 struct listener *l;
722
723 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
724
Willy Tarreau37159062020-08-27 07:48:42 +0200725 if (l->rx.addr.ss_family == AF_UNIX &&
William Lallemand85b0bd92017-06-01 17:38:53 +0200726 (bind_conf->level & ACCESS_FD_LISTENERS)) {
727 const struct sockaddr_un *un;
728
Willy Tarreau37159062020-08-27 07:48:42 +0200729 un = (struct sockaddr_un *)&l->rx.addr;
William Lallemand85b0bd92017-06-01 17:38:53 +0200730 /* priority to old_unixsocket */
731 if (!cur_unixsocket) {
732 cur_unixsocket = strdup(un->sun_path);
733 } else {
Tim Duesterhuse5ff1412021-01-02 22:31:53 +0100734 if (old_unixsocket && strcmp(un->sun_path, old_unixsocket) == 0) {
William Lallemand85b0bd92017-06-01 17:38:53 +0200735 free(cur_unixsocket);
736 cur_unixsocket = strdup(old_unixsocket);
737 return;
738 }
739 }
740 }
741 }
742 }
743 }
744 if (!cur_unixsocket && old_unixsocket)
745 cur_unixsocket = strdup(old_unixsocket);
746}
747
William Lallemand73b85e72017-06-01 17:38:51 +0200748/*
749 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800750 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200751 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100752void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200753{
William Lallemand00417412020-06-05 14:08:41 +0200754 char **next_argv = NULL;
755 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200756 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200757 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200758 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100759 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100760 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200761
762 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100763#if defined(USE_SYSTEMD)
764 if (global.tune.options & GTUNE_USE_SYSTEMD)
765 sd_notify(0, "RELOADING=1");
766#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200767 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
768
William Lallemandbc193052018-09-11 10:06:26 +0200769 mworker_proc_list_to_env(); /* put the children description in the env */
770
William Lallemand7c756a82018-11-26 11:53:40 +0100771 /* during the reload we must ensure that every FDs that can't be
772 * reuse (ie those that are not referenced in the proc_list)
773 * are closed or they will leak. */
774
775 /* close the listeners FD */
776 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200777
778 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
779 /* close the poller FD and the thread waker pipe FD */
780 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
781 ptdf->fct();
782 if (fdtab)
783 deinit_pollers();
784 }
Ilya Shipitsin98a9e1b2021-02-19 23:42:53 +0500785#ifdef HAVE_SSL_RAND_KEEP_RANDOM_DEVICES_OPEN
William Lallemand5fdb5b32019-10-15 14:04:08 +0200786 /* close random device FDs */
787 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100788#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100789
Willy Tarreau8dca1952019-03-01 10:21:55 +0100790 /* restore the initial FD limits */
791 limit.rlim_cur = rlim_fd_cur_at_boot;
792 limit.rlim_max = rlim_fd_max_at_boot;
793 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
794 getrlimit(RLIMIT_NOFILE, &limit);
795 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
796 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
797 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
798 }
799
William Lallemand73b85e72017-06-01 17:38:51 +0200800 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200801 while (old_argv[old_argc])
802 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200803
William Lallemand85b0bd92017-06-01 17:38:53 +0200804 /* 1 for haproxy -sf, 2 for -x /socket */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200805 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1,
806 sizeof(*next_argv));
William Lallemand73b85e72017-06-01 17:38:51 +0200807 if (next_argv == NULL)
808 goto alloc_error;
809
William Lallemand00417412020-06-05 14:08:41 +0200810 /* copy the program name */
811 next_argv[next_argc++] = old_argv[0];
812
813 /* insert the new options just after argv[0] in case we have a -- */
814
William Lallemand73b85e72017-06-01 17:38:51 +0200815 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200816 if (mworker_child_nb() > 0) {
817 struct mworker_proc *child;
818
William Lallemand73b85e72017-06-01 17:38:51 +0200819 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200820
821 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100822 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200823 continue;
William Lallemand00417412020-06-05 14:08:41 +0200824 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200825 goto alloc_error;
826 msg = NULL;
827 }
828 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200829 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200830 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200831 next_argv[next_argc++] = "-x";
832 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200833 }
834
William Lallemand00417412020-06-05 14:08:41 +0200835 /* copy the previous options */
836 for (i = 1; i < old_argc; i++)
837 next_argv[next_argc++] = old_argv[i];
838
Christopher Faulet767a84b2017-11-24 16:50:31 +0100839 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200840 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100841 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200842
Christopher Faulet767a84b2017-11-24 16:50:31 +0100843 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
Willy Tarreau61cfdf42021-02-20 10:46:51 +0100844 ha_free(&next_argv);
William Lallemand722d4ca2017-11-15 19:02:55 +0100845 return;
846
William Lallemand73b85e72017-06-01 17:38:51 +0200847alloc_error:
Willy Tarreau61cfdf42021-02-20 10:46:51 +0100848 ha_free(&next_argv);
Joseph Herlant07a08342018-11-15 10:43:05 -0800849 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200850 return;
851}
852
William Lallemandb3f2be32018-09-11 10:06:18 +0200853static void mworker_loop()
854{
855
856#if defined(USE_SYSTEMD)
857 if (global.tune.options & GTUNE_USE_SYSTEMD)
858 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
859#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200860 /* Busy polling makes no sense in the master :-) */
861 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200862
William Lallemandbc193052018-09-11 10:06:26 +0200863 master = 1;
864
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100865 signal_unregister(SIGTTIN);
866 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100867 signal_unregister(SIGUSR1);
868 signal_unregister(SIGHUP);
869 signal_unregister(SIGQUIT);
870
William Lallemandb3f2be32018-09-11 10:06:18 +0200871 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
872 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100873 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
874 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200875 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
876 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
877 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
878 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
879
880 mworker_unblock_signals();
881 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100882 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200883
William Lallemandbc193052018-09-11 10:06:26 +0200884 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
885 some SIGCHLD were lost */
886
William Lallemandb3f2be32018-09-11 10:06:18 +0200887 global.nbthread = 1;
888 relative_pid = 1;
889 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100890 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200891
William Lallemand2672eb92018-12-14 15:52:39 +0100892#ifdef USE_THREAD
893 tid_bit = 1;
894 all_threads_mask = 1;
895#endif
896
William Lallemandb3f2be32018-09-11 10:06:18 +0200897 jobs++; /* this is the "master" job, we want to take care of the
898 signals even if there is no listener so the poll loop don't
899 leave */
900
901 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200902 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200903}
William Lallemandcb11fd22017-06-01 17:38:52 +0200904
905/*
906 * Reexec the process in failure mode, instead of exiting
907 */
908void reexec_on_failure()
909{
910 if (!atexit_flag)
911 return;
912
913 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
914
Christopher Faulet767a84b2017-11-24 16:50:31 +0100915 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200916 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200917}
William Lallemand73b85e72017-06-01 17:38:51 +0200918
919
920/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200921 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
922 * a signal zero to all subscribers. This means that it's as easy as
923 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200924 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100925static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200926{
927 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200928 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100929 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200930}
931
932/*
933 * upon SIGTTOU, we pause everything
934 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100935static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200936{
Willy Tarreau775e0012020-09-24 16:36:26 +0200937 if (protocol_pause_all() & ERR_FATAL) {
938 const char *msg = "Some proxies refused to pause, performing soft stop now.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200939 ha_warning("%s", msg);
940 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200941 soft_stop();
942 }
Willy Tarreaubafbe012017-11-24 17:34:44 +0100943 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200944}
945
946/*
947 * upon SIGTTIN, let's have a soft stop.
948 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100949static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200950{
Willy Tarreau775e0012020-09-24 16:36:26 +0200951 if (protocol_resume_all() & ERR_FATAL) {
952 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 +0200953 ha_warning("%s", msg);
954 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200955 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200956}
957
958/*
959 * this function dumps every server's state when the process receives SIGHUP.
960 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100961static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200962{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100963 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200964
Christopher Faulet767a84b2017-11-24 16:50:31 +0100965 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200966 while (p) {
967 struct server *s = p->srv;
968
969 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
970 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100971 chunk_printf(&trash,
972 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
973 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200974 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100975 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200976 ha_warning("%s\n", trash.area);
977 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200978 s = s->next;
979 }
980
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200981 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
982 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100983 chunk_printf(&trash,
984 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
985 p->id,
986 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 +0200987 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100988 chunk_printf(&trash,
989 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
990 p->id,
991 (p->srv_bck) ? "is running on backup servers" : "has no server available",
992 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 +0200993 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100994 chunk_printf(&trash,
995 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
996 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
997 p->id, p->srv_act, p->srv_bck,
998 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 +0200999 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001000 ha_warning("%s\n", trash.area);
1001 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001002
1003 p = p->next;
1004 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001005}
1006
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001007static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001008{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001009 /* dump memory usage then free everything possible */
1010 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001011 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001012}
1013
William Lallemande1340412017-12-28 16:09:36 +01001014/*
1015 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1016 * If <fd> < 0, it opens /dev/null and use it to dup
1017 *
1018 * In the case of chrooting, you have to open /dev/null before the chroot, and
1019 * pass the <fd> to this function
1020 */
1021static void stdio_quiet(int fd)
1022{
1023 if (fd < 0)
1024 fd = open("/dev/null", O_RDWR, 0);
1025
1026 if (fd > -1) {
1027 fclose(stdin);
1028 fclose(stdout);
1029 fclose(stderr);
1030
1031 dup2(fd, 0);
1032 dup2(fd, 1);
1033 dup2(fd, 2);
1034 if (fd > 2)
1035 close(fd);
1036 return;
1037 }
1038
1039 ha_alert("Cannot open /dev/null\n");
1040 exit(EXIT_FAILURE);
1041}
1042
1043
Joseph Herlant03420902018-11-15 10:41:50 -08001044/* This function checks if cfg_cfgfiles contains directories.
1045 * If it finds one, it adds all the files (and only files) it contains
1046 * in cfg_cfgfiles in place of the directory (and removes the directory).
1047 * It adds the files in lexical order.
1048 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001049 * It doesn't add files with name starting with '.'
1050 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001051static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001052{
1053 struct wordlist *wl, *wlb;
1054 char *err = NULL;
1055
1056 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1057 struct stat file_stat;
1058 struct dirent **dir_entries = NULL;
1059 int dir_entries_nb;
1060 int dir_entries_it;
1061
1062 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001063 ha_alert("Cannot open configuration file/directory %s : %s\n",
1064 wl->s,
1065 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001066 exit(1);
1067 }
1068
1069 if (!S_ISDIR(file_stat.st_mode))
1070 continue;
1071
1072 /* from this point wl->s is a directory */
1073
1074 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1075 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001076 ha_alert("Cannot open configuration directory %s : %s\n",
1077 wl->s,
1078 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001079 exit(1);
1080 }
1081
1082 /* for each element in the directory wl->s */
1083 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1084 struct dirent *dir_entry = dir_entries[dir_entries_it];
1085 char *filename = NULL;
1086 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1087
1088 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001089 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001090 */
1091 if (dir_entry->d_name[0] == '.' ||
1092 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1093 goto next_dir_entry;
1094
1095 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001096 ha_alert("Cannot load configuration files %s : out of memory.\n",
1097 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001098 exit(1);
1099 }
1100
1101 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001102 ha_alert("Cannot open configuration file %s : %s\n",
1103 wl->s,
1104 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001105 exit(1);
1106 }
1107
1108 /* don't add anything else than regular file in cfg_cfgfiles
1109 * this way we avoid loops
1110 */
1111 if (!S_ISREG(file_stat.st_mode))
1112 goto next_dir_entry;
1113
1114 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001115 ha_alert("Cannot load configuration files %s : %s\n",
1116 filename,
1117 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001118 exit(1);
1119 }
1120
1121next_dir_entry:
1122 free(filename);
1123 free(dir_entry);
1124 }
1125
1126 free(dir_entries);
1127
1128 /* remove the current directory (wl) from cfg_cfgfiles */
1129 free(wl->s);
1130 LIST_DEL(&wl->list);
1131 free(wl);
1132 }
1133
1134 free(err);
1135}
1136
Willy Tarreaubaaee002006-06-26 02:48:02 +02001137/*
William Lallemand73b85e72017-06-01 17:38:51 +02001138 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001139 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001140 * Return an allocated copy of argv
1141 */
1142
1143static char **copy_argv(int argc, char **argv)
1144{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001145 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001146
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02001147 newargv = calloc(argc + 2, sizeof(*newargv));
William Lallemand73b85e72017-06-01 17:38:51 +02001148 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001149 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001150 return NULL;
1151 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001152 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001153
William Lallemanddf6c5a82020-06-04 17:40:23 +02001154 /* first copy argv[0] */
1155 *newargv++ = *argv++;
1156 argc--;
1157
1158 while (argc > 0) {
1159 if (**argv != '-') {
1160 /* non options are copied but will fail in the argument parser */
1161 *newargv++ = *argv++;
1162 argc--;
1163
1164 } else {
1165 char *flag;
1166
1167 flag = *argv + 1;
1168
1169 if (flag[0] == '-' && flag[1] == 0) {
1170 /* "--\0" copy every arguments till the end of argv */
1171 *newargv++ = *argv++;
1172 argc--;
1173
1174 while (argc > 0) {
1175 *newargv++ = *argv++;
1176 argc--;
1177 }
1178 } else {
1179 switch (*flag) {
1180 case 's':
1181 /* -sf / -st and their parameters are ignored */
1182 if (flag[1] == 'f' || flag[1] == 't') {
1183 argc--;
1184 argv++;
1185 /* The list can't contain a negative value since the only
1186 way to know the end of this list is by looking for the
1187 next option or the end of the options */
1188 while (argc > 0 && argv[0][0] != '-') {
1189 argc--;
1190 argv++;
1191 }
William Lallemand398da622020-09-02 16:12:23 +02001192 } else {
1193 argc--;
1194 argv++;
1195
William Lallemanddf6c5a82020-06-04 17:40:23 +02001196 }
1197 break;
1198
1199 case 'x':
1200 /* this option and its parameter are ignored */
1201 argc--;
1202 argv++;
1203 if (argc > 0) {
1204 argc--;
1205 argv++;
1206 }
1207 break;
1208
1209 case 'C':
1210 case 'n':
1211 case 'm':
1212 case 'N':
1213 case 'L':
1214 case 'f':
1215 case 'p':
1216 case 'S':
1217 /* these options have only 1 parameter which must be copied and can start with a '-' */
1218 *newargv++ = *argv++;
1219 argc--;
1220 if (argc == 0)
1221 goto error;
1222 *newargv++ = *argv++;
1223 argc--;
1224 break;
1225 default:
1226 /* for other options just copy them without parameters, this is also done
1227 * for options like "--foo", but this will fail in the argument parser.
1228 * */
1229 *newargv++ = *argv++;
1230 argc--;
1231 break;
1232 }
William Lallemand73b85e72017-06-01 17:38:51 +02001233 }
1234 }
William Lallemand73b85e72017-06-01 17:38:51 +02001235 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001236
William Lallemanddf6c5a82020-06-04 17:40:23 +02001237 return retargv;
1238
1239error:
1240 free(retargv);
1241 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001242}
1243
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001244
1245/* Performs basic random seed initialization. The main issue with this is that
1246 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1247 * which means that there will only be 4 billion possible random sequences once
1248 * srandom() is called, regardless of the internal state. Not calling it is
1249 * even worse as we'll always produce the same randoms sequences. What we do
1250 * here is to create an initial sequence from various entropy sources, hash it
1251 * using SHA1 and keep the resulting 160 bits available globally.
1252 *
1253 * We initialize the current process with the first 32 bits before starting the
1254 * polling loop, where all this will be changed to have process specific and
1255 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001256 *
1257 * Before starting threads, it's still possible to call random() as srandom()
1258 * is initialized from this, but after threads and/or processes are started,
1259 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001260 */
1261static void ha_random_boot(char *const *argv)
1262{
1263 unsigned char message[256];
1264 unsigned char *m = message;
1265 struct timeval tv;
1266 blk_SHA_CTX ctx;
1267 unsigned long l;
1268 int fd;
1269 int i;
1270
1271 /* start with current time as pseudo-random seed */
1272 gettimeofday(&tv, NULL);
1273 write_u32(m, tv.tv_sec); m += 4;
1274 write_u32(m, tv.tv_usec); m += 4;
1275
1276 /* PID and PPID add some OS-based randomness */
1277 write_u16(m, getpid()); m += 2;
1278 write_u16(m, getppid()); m += 2;
1279
1280 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1281 fd = open("/dev/urandom", O_RDONLY);
1282 if (fd >= 0) {
1283 i = read(fd, m, 20);
1284 if (i > 0)
1285 m += i;
1286 close(fd);
1287 }
1288
1289 /* take up to 160 bits bytes from openssl (non-blocking) */
1290#ifdef USE_OPENSSL
1291 if (RAND_bytes(m, 20) == 1)
1292 m += 20;
1293#endif
1294
1295 /* take 160 bits from existing random in case it was already initialized */
1296 for (i = 0; i < 5; i++) {
1297 write_u32(m, random());
1298 m += 4;
1299 }
1300
1301 /* stack address (benefit form operating system's ASLR) */
1302 l = (unsigned long)&m;
1303 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1304
1305 /* argv address (benefit form operating system's ASLR) */
1306 l = (unsigned long)&argv;
1307 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1308
1309 /* use tv_usec again after all the operations above */
1310 gettimeofday(&tv, NULL);
1311 write_u32(m, tv.tv_usec); m += 4;
1312
1313 /*
1314 * At this point, ~84-92 bytes have been used
1315 */
1316
1317 /* finish with the hostname */
1318 strncpy((char *)m, hostname, message + sizeof(message) - m);
1319 m += strlen(hostname);
1320
1321 /* total message length */
1322 l = m - message;
1323
1324 memset(&ctx, 0, sizeof(ctx));
1325 blk_SHA1_Init(&ctx);
1326 blk_SHA1_Update(&ctx, message, l);
1327 blk_SHA1_Final(boot_seed, &ctx);
1328
1329 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001330 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001331}
1332
Willy Tarreau5a023f02019-03-01 14:19:31 +01001333/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1334 * setting, and returns it. It may return -1 meaning "unlimited" if some
1335 * unlimited proxies have been found and the global.maxconn value is not yet
1336 * set. It may also return a value greater than maxconn if it's not yet set.
1337 * Note that a value of zero means there is no need for pipes. -1 is never
1338 * returned if global.maxconn is valid.
1339 */
1340static int compute_ideal_maxpipes()
1341{
1342 struct proxy *cur;
1343 int nbfe = 0, nbbe = 0;
1344 int unlimited = 0;
1345 int pipes;
1346 int max;
1347
1348 for (cur = proxies_list; cur; cur = cur->next) {
1349 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1350 if (cur->cap & PR_CAP_FE) {
1351 max = cur->maxconn;
1352 nbfe += max;
1353 if (!max) {
1354 unlimited = 1;
1355 break;
1356 }
1357 }
1358 if (cur->cap & PR_CAP_BE) {
1359 max = cur->fullconn ? cur->fullconn : global.maxconn;
1360 nbbe += max;
1361 if (!max) {
1362 unlimited = 1;
1363 break;
1364 }
1365 }
1366 }
1367 }
1368
1369 pipes = MAX(nbfe, nbbe);
1370 if (global.maxconn) {
1371 if (pipes > global.maxconn || unlimited)
1372 pipes = global.maxconn;
1373 } else if (unlimited) {
1374 pipes = -1;
1375 }
1376
1377 return pipes >= 4 ? pipes / 4 : pipes;
1378}
1379
Willy Tarreauac350932019-03-01 15:43:14 +01001380/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1381 * rlimits and computes an ideal maxconn. It's meant to be called only when
1382 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001383 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1384 * default 100) is returned as it is expected that it will even run on tight
1385 * environments, and will maintain compatibility with previous packages that
1386 * used to rely on this value as the default one. The system will emit a
1387 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001388 */
1389static int compute_ideal_maxconn()
1390{
1391 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1392 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1393 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001394 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001395 int maxconn;
1396
1397 /* we have to take into account these elements :
1398 * - number of engine_fds, which inflates the number of FD needed per
1399 * connection by this number.
1400 * - number of pipes per connection on average : for the unlimited
1401 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1402 * fixed value of 2*pipes.
1403 * - two FDs per connection
1404 */
1405
1406 /* subtract listeners and checks */
1407 remain -= global.maxsock;
1408
Willy Tarreau3f200852019-03-14 19:13:17 +01001409 /* one epoll_fd/kqueue_fd per thread */
1410 remain -= global.nbthread;
1411
1412 /* one wake-up pipe (2 fd) per thread */
1413 remain -= 2 * global.nbthread;
1414
Willy Tarreauac350932019-03-01 15:43:14 +01001415 /* Fixed pipes values : we only subtract them if they're not larger
1416 * than the remaining FDs because pipes are optional.
1417 */
1418 if (pipes >= 0 && pipes * 2 < remain)
1419 remain -= pipes * 2;
1420
1421 if (pipes < 0) {
1422 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1423 * = maxconn * (2 + 0.5 + engine_fds)
1424 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1425 */
1426 maxconn = 2 * remain / (5 + 2 * engine_fds);
1427 } else {
1428 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1429 * = maxconn * (2 + engine_fds)
1430 */
1431 maxconn = remain / (2 + engine_fds);
1432 }
1433
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001434 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001435}
1436
Willy Tarreaua409f302020-03-10 17:08:53 +01001437/* computes the estimated maxsock value for the given maxconn based on the
1438 * possibly set global.maxpipes and existing partial global.maxsock. It may
1439 * temporarily change global.maxconn for the time needed to propagate the
1440 * computations, and will reset it.
1441 */
1442static int compute_ideal_maxsock(int maxconn)
1443{
1444 int maxpipes = global.maxpipes;
1445 int maxsock = global.maxsock;
1446
1447
1448 if (!maxpipes) {
1449 int old_maxconn = global.maxconn;
1450
1451 global.maxconn = maxconn;
1452 maxpipes = compute_ideal_maxpipes();
1453 global.maxconn = old_maxconn;
1454 }
1455
1456 maxsock += maxconn * 2; /* each connection needs two sockets */
1457 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1458 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1459 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1460
1461 /* compute fd used by async engines */
1462 if (global.ssl_used_async_engines) {
1463 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1464
1465 maxsock += maxconn * sides * global.ssl_used_async_engines;
1466 }
1467 return maxsock;
1468}
1469
Thayne McCombs8f0cc5c2021-01-07 21:35:52 -07001470/* Tests if it is possible to set the current process's RLIMIT_NOFILE to
Willy Tarreau304e17e2020-03-10 17:54:54 +01001471 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1472 * value is accepted, non-zero otherwise. This is used to determine if an
1473 * automatic limit may be applied or not. When it is not, the caller knows that
1474 * the highest we can do is the rlim_max at boot. In case of error, we return
1475 * that the setting is possible, so that we defer the error processing to the
1476 * final stage in charge of enforcing this.
1477 */
1478static int check_if_maxsock_permitted(int maxsock)
1479{
1480 struct rlimit orig_limit, test_limit;
1481 int ret;
1482
1483 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1484 return 1;
1485
1486 /* don't go further if we can't even set to what we have */
1487 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1488 return 1;
1489
1490 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1491 test_limit.rlim_cur = test_limit.rlim_max;
1492 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1493
1494 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1495 return 1;
1496
1497 return ret == 0;
1498}
1499
1500
William Lallemand73b85e72017-06-01 17:38:51 +02001501/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001502 * This function initializes all the necessary variables. It only returns
1503 * if everything is OK. If something fails, it exits.
1504 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001505static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001506{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001507 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001508 char *tmp;
1509 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001510 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001511 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001512 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001513 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001514 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001515 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001516 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001517 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001518
Christopher Faulete3a5e352017-10-24 13:53:54 +02001519 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001520 old_argv = copy_argv(argc, argv);
1521 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001522 ha_alert("failed to copy argv.\n");
1523 exit(1);
1524 }
William Lallemand73b85e72017-06-01 17:38:51 +02001525
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001526 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001527 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001528 exit(1);
1529 }
David du Colombier7af46052012-05-16 14:16:48 +02001530
Emeric Brun2b920a12010-09-23 18:30:22 +02001531 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1532 * the string in case of truncation, and at least FreeBSD appears not to do
1533 * it.
1534 */
1535 memset(hostname, 0, sizeof(hostname));
1536 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001537
1538 if ((localpeer = strdup(hostname)) == NULL) {
1539 ha_alert("Cannot allocate memory for local peer.\n");
1540 exit(EXIT_FAILURE);
1541 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001542 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001543
William Lallemand24c928c2020-01-14 17:58:18 +01001544 /* we were in mworker mode, we should restart in mworker mode */
1545 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1546 global.mode |= MODE_MWORKER;
1547
Willy Tarreaubaaee002006-06-26 02:48:02 +02001548 /*
1549 * Initialize the previously static variables.
1550 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001551
Willy Tarreau173d9952018-01-26 21:48:23 +01001552 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001553 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001554
Willy Tarreaubaaee002006-06-26 02:48:02 +02001555
1556#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001557 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001558#endif
1559
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001560 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001561 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001562 start_date = now;
1563
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001564 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001565
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001566 if (init_acl() != 0)
1567 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001568
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001569 /* Initialise lua. */
1570 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001571
Christopher Fauletff2613e2016-11-09 11:36:17 +01001572 /* Initialize process vars */
1573 vars_init(&global.vars, SCOPE_PROC);
1574
Willy Tarreau43b78992009-01-25 15:42:27 +01001575 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001576#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001577 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001578#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001579#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001580 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001582#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001583 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001584#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001585#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001586 global.tune.options |= GTUNE_USE_EVPORTS;
1587#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001588#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001589 global.tune.options |= GTUNE_USE_SPLICE;
1590#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001591#if defined(USE_GETADDRINFO)
1592 global.tune.options |= GTUNE_USE_GAI;
1593#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001594#if defined(SO_REUSEPORT)
1595 global.tune.options |= GTUNE_USE_REUSEPORT;
1596#endif
Willy Tarreau76cc6992020-07-01 18:49:24 +02001597#ifdef USE_THREAD
1598 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
1599#endif
William Dauchya5194602020-03-28 19:29:58 +01001600 global.tune.options |= GTUNE_STRICT_LIMITS;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001601
1602 pid = getpid();
1603 progname = *argv;
1604 while ((tmp = strchr(progname, '/')) != NULL)
1605 progname = tmp + 1;
1606
Kevinm48936af2010-12-22 16:08:21 +00001607 /* the process name is used for the logs only */
Eric Salama7cea6062020-10-02 11:58:19 +02001608 chunk_initlen(&global.log_tag, strdup(progname), strlen(progname), strlen(progname));
1609 if (b_orig(&global.log_tag) == NULL) {
1610 chunk_destroy(&global.log_tag);
1611 ha_alert("Cannot allocate memory for log_tag.\n");
1612 exit(EXIT_FAILURE);
1613 }
Kevinm48936af2010-12-22 16:08:21 +00001614
Willy Tarreaubaaee002006-06-26 02:48:02 +02001615 argc--; argv++;
1616 while (argc > 0) {
1617 char *flag;
1618
1619 if (**argv == '-') {
1620 flag = *argv+1;
1621
1622 /* 1 arg */
1623 if (*flag == 'v') {
1624 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001625 if (flag[1] == 'v') /* -vv */
1626 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001627 exit(0);
1628 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001629#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001630 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001631 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001632#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001633#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001634 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001635 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001636#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001637#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001638 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001639 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001640#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001641#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001642 else if (*flag == 'd' && flag[1] == 'v')
1643 global.tune.options &= ~GTUNE_USE_EVPORTS;
1644#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001645#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001646 else if (*flag == 'd' && flag[1] == 'S')
1647 global.tune.options &= ~GTUNE_USE_SPLICE;
1648#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001649#if defined(USE_GETADDRINFO)
1650 else if (*flag == 'd' && flag[1] == 'G')
1651 global.tune.options &= ~GTUNE_USE_GAI;
1652#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001653#if defined(SO_REUSEPORT)
1654 else if (*flag == 'd' && flag[1] == 'R')
1655 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1656#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001657 else if (*flag == 'd' && flag[1] == 'V')
1658 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001659 else if (*flag == 'V')
1660 arg_mode |= MODE_VERBOSE;
1661 else if (*flag == 'd' && flag[1] == 'b')
1662 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001663 else if (*flag == 'd' && flag[1] == 'W')
1664 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001665 else if (*flag == 'd' && flag[1] == 'M')
1666 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001667 else if (*flag == 'd' && flag[1] == 'r')
1668 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001669 else if (*flag == 'd')
1670 arg_mode |= MODE_DEBUG;
1671 else if (*flag == 'c')
1672 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001673 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001674 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001675 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001676 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001677#if defined(USE_SYSTEMD)
1678 global.tune.options |= GTUNE_USE_SYSTEMD;
1679#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001680 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 +01001681 usage(progname);
1682#endif
1683 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001684 else if (*flag == 'W')
1685 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001686 else if (*flag == 'q')
1687 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001688 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001689 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001690 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001691 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001692 }
William Lallemand4fc09692017-06-19 16:37:19 +02001693 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001694 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001695 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001696
Olivier Houchardf73629d2017-04-05 22:33:04 +02001697 argv++;
1698 argc--;
1699 }
William Lallemande7361152018-10-26 14:47:36 +02001700 else if (*flag == 'S') {
1701 struct wordlist *c;
1702
William Lallemanda6b32492020-06-04 23:49:20 +02001703 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001704 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1705 usage(progname);
1706 }
1707 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1708 ha_alert("Cannot allocate memory\n");
1709 exit(EXIT_FAILURE);
1710 }
1711 LIST_ADD(&mworker_cli_conf, &c->list);
1712
1713 argv++;
1714 argc--;
1715 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001716 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1717 /* list of pids to finish ('f') or terminate ('t') */
1718
1719 if (flag[1] == 'f')
1720 oldpids_sig = SIGUSR1; /* finish then exit */
1721 else
1722 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001723 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001724 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001725 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1726 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001727 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001728 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001729 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001730 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001731 errno = 0;
1732 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1733 if (errno) {
1734 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1735 flag,
1736 *argv, strerror(errno));
1737 exit(1);
1738 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001739 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001740 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001741 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1742 flag, endptr);
1743 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001744 }
Chris Lane236062f2018-02-05 23:15:44 +00001745 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001746 if (oldpids[nb_oldpids] <= 0)
1747 usage(progname);
1748 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001749 }
1750 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001751 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1752 /* now that's a cfgfile list */
1753 argv++; argc--;
1754 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001755 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001756 ha_alert("Cannot load configuration file/directory %s : %s\n",
1757 *argv,
1758 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001759 exit(1);
1760 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001761 argv++; argc--;
1762 }
1763 break;
1764 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001765 else { /* >=2 args */
1766 argv++; argc--;
1767 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001768 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001769
1770 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001771 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001772 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001773 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001774 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001775 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001776 free(localpeer);
1777 if ((localpeer = strdup(*argv)) == NULL) {
1778 ha_alert("Cannot allocate memory for local peer.\n");
1779 exit(EXIT_FAILURE);
1780 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001781 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001782 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001783 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001784 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001785 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001786 ha_alert("Cannot load configuration file/directory %s : %s\n",
1787 *argv,
1788 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001789 exit(1);
1790 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001791 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001792 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001793 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001794 }
1795 }
1796 }
1797 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001798 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001799 argv++; argc--;
1800 }
1801
Christopher Faulete3a5e352017-10-24 13:53:54 +02001802 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001803 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001804
William Lallemand944e6192018-11-21 15:48:31 +01001805 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001806 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001807 global.mode |= MODE_MWORKER_WAIT;
1808 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001809 }
1810
1811 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1812 atexit_flag = 1;
1813 atexit(reexec_on_failure);
1814 }
1815
Willy Tarreau576132e2011-09-10 19:26:56 +02001816 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001817 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001818 exit(1);
1819 }
1820
Willy Tarreaubaaee002006-06-26 02:48:02 +02001821 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001822
William Lallemand944e6192018-11-21 15:48:31 +01001823 /* in wait mode, we don't try to read the configuration files */
1824 if (!(global.mode & MODE_MWORKER_WAIT)) {
Christopher Faulet4e366822021-01-12 18:57:38 +01001825 char *env_cfgfiles = NULL;
1826 int env_err = 0;
Willy Tarreauc4382422009-12-06 13:10:44 +01001827
William Lallemand944e6192018-11-21 15:48:31 +01001828 /* handle cfgfiles that are actually directories */
1829 cfgfiles_expand_directories();
1830
1831 if (LIST_ISEMPTY(&cfg_cfgfiles))
1832 usage(progname);
1833
1834
1835 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1836 int ret;
1837
Christopher Faulet4e366822021-01-12 18:57:38 +01001838 if (env_err == 0) {
1839 if (!memprintf(&env_cfgfiles, "%s%s%s",
1840 (env_cfgfiles ? env_cfgfiles : ""),
1841 (env_cfgfiles ? ";" : ""), wl->s))
1842 env_err = 1;
1843 }
William Lallemand7b302d82019-05-20 11:15:37 +02001844
William Lallemand944e6192018-11-21 15:48:31 +01001845 ret = readcfgfile(wl->s);
1846 if (ret == -1) {
1847 ha_alert("Could not open configuration file %s : %s\n",
1848 wl->s, strerror(errno));
Christopher Faulet4e366822021-01-12 18:57:38 +01001849 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001850 exit(1);
1851 }
1852 if (ret & (ERR_ABORT|ERR_FATAL))
1853 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1854 err_code |= ret;
Christopher Faulet4e366822021-01-12 18:57:38 +01001855 if (err_code & ERR_ABORT) {
1856 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001857 exit(1);
Christopher Faulet4e366822021-01-12 18:57:38 +01001858 }
Willy Tarreauc4382422009-12-06 13:10:44 +01001859 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001860
William Lallemand944e6192018-11-21 15:48:31 +01001861 /* do not try to resolve arguments nor to spot inconsistencies when
1862 * the configuration contains fatal errors caused by files not found
1863 * or failed memory allocations.
1864 */
1865 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1866 ha_alert("Fatal errors found in configuration.\n");
Christopher Faulet4e366822021-01-12 18:57:38 +01001867 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001868 exit(1);
1869 }
Christopher Faulet4e366822021-01-12 18:57:38 +01001870 if (env_err) {
1871 ha_alert("Could not allocate memory for HAPROXY_CFGFILES env variable\n");
1872 exit(1);
1873 }
1874 setenv("HAPROXY_CFGFILES", env_cfgfiles, 1);
1875 free(env_cfgfiles);
William Lallemand7b302d82019-05-20 11:15:37 +02001876
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001877 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001878 if (global.mode & MODE_MWORKER) {
1879 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001880 struct mworker_proc *tmproc;
1881
William Lallemand482f9a92019-04-12 16:15:00 +02001882 setenv("HAPROXY_MWORKER", "1", 1);
1883
William Lallemand16dd1b32018-11-19 18:46:18 +01001884 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1885
William Lallemandf3a86832019-04-01 11:29:58 +02001886 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001887 if (!tmproc) {
1888 ha_alert("Cannot allocate process structures.\n");
1889 exit(EXIT_FAILURE);
1890 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001891 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001892 tmproc->reloads = 0;
1893 tmproc->relative_pid = 0;
1894 tmproc->pid = pid;
1895 tmproc->timestamp = start_date.tv_sec;
1896 tmproc->ipc_fd[0] = -1;
1897 tmproc->ipc_fd[1] = -1;
1898
1899 proc_self = tmproc;
1900
1901 LIST_ADDQ(&proc_list, &tmproc->list);
1902 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001903
1904 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001905
William Lallemandf3a86832019-04-01 11:29:58 +02001906 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001907 if (!tmproc) {
1908 ha_alert("Cannot allocate process structures.\n");
1909 exit(EXIT_FAILURE);
1910 }
1911
William Lallemand8f7069a2019-04-12 16:09:23 +02001912 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001913 tmproc->pid = -1;
1914 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001915 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001916 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001917 tmproc->ipc_fd[0] = -1;
1918 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001919
1920 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1921 exit(EXIT_FAILURE);
1922 }
1923
1924 LIST_ADDQ(&proc_list, &tmproc->list);
1925 }
William Lallemand944e6192018-11-21 15:48:31 +01001926 }
1927 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1928 struct wordlist *it, *c;
1929
William Lallemand1b663612018-10-26 14:47:33 +02001930 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001931
William Lallemande7361152018-10-26 14:47:36 +02001932
William Lallemand550db6d2018-11-06 17:37:12 +01001933 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001934
William Lallemand550db6d2018-11-06 17:37:12 +01001935 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001936 ha_alert("Can't create the master's CLI.\n");
1937 exit(EXIT_FAILURE);
1938 }
William Lallemande7361152018-10-26 14:47:36 +02001939
William Lallemand550db6d2018-11-06 17:37:12 +01001940 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1941
1942 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1943 ha_alert("Can't create the master's CLI.\n");
1944 exit(EXIT_FAILURE);
1945 }
1946 LIST_DEL(&c->list);
1947 free(c->s);
1948 free(c);
1949 }
1950 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001951 }
1952
Eric Salama5ba83352021-03-16 15:11:17 +01001953 if (!LIST_ISEMPTY(&mworker_cli_conf) && !(arg_mode & MODE_MWORKER)) {
1954 ha_warning("a master CLI socket was defined, but master-worker mode (-W) is not enabled.\n");
1955 }
1956
Willy Tarreauf42d7942020-10-20 11:54:49 +02001957 if (global.nbproc > 1 && !global.nbthread) {
1958 ha_warning("nbproc is deprecated!\n"
1959 " | For suffering many limitations, the 'nbproc' directive is now deprecated\n"
1960 " | and scheduled for removal in 2.5. Just comment it out: haproxy will use\n"
1961 " | threads and will run on all allocated processors. You may also switch to\n"
1962 " | 'nbthread %d' to keep the same number of processors. If you absolutely\n"
1963 " | want to run in multi-process mode, you can silence this warning by adding\n"
1964 " | 'nbthread 1', but then please report your use case to developers.\n",
1965 global.nbproc);
1966 }
1967
Willy Tarreaue90904d2021-02-12 14:08:31 +01001968 /* defaults sections are not needed anymore */
1969 proxy_destroy_all_defaults();
1970
Willy Tarreaubb925012009-07-23 13:36:36 +02001971 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001972 for (px = proxies_list; px; px = px->next) {
1973 struct server *srv;
1974 struct post_proxy_check_fct *ppcf;
1975 struct post_server_check_fct *pscf;
1976
Christopher Fauletd5bd8242020-11-02 16:20:13 +01001977 if (px->disabled)
1978 continue;
1979
Christopher Fauletc1692962019-08-12 09:51:07 +02001980 list_for_each_entry(pscf, &post_server_check_list, list) {
1981 for (srv = px->srv; srv; srv = srv->next)
1982 err_code |= pscf->fct(srv);
1983 }
1984 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1985 err_code |= ppcf->fct(px);
1986 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001987 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001988 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001989 exit(1);
1990 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001991
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01001992 err_code |= pattern_finalize_config();
1993 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1994 ha_alert("Failed to finalize pattern config.\n");
1995 exit(1);
1996 }
Willy Tarreau0f936722019-04-11 14:47:08 +02001997
Willy Tarreau70060452015-12-14 12:46:07 +01001998 /* recompute the amount of per-process memory depending on nbproc and
1999 * the shared SSL cache size (allowed to exist in all processes).
2000 */
2001 if (global.rlimit_memmax_all) {
2002#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
2003 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
2004
2005 global.rlimit_memmax =
2006 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
2007 ssl_cache_bytes) / global.nbproc +
2008 ssl_cache_bytes + 1048575LL) / 1048576LL;
2009#else
2010 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
2011#endif
2012 }
2013
Willy Tarreaue5733232019-05-22 19:24:06 +02002014#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002015 err_code |= netns_init();
2016 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002017 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002018 exit(1);
2019 }
2020#endif
2021
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002022 /* Apply server states */
2023 apply_server_state();
2024
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002025 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002026 srv_compute_all_admin_states(px);
2027
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002028 /* Apply servers' configured address */
2029 err_code |= srv_init_addr();
2030 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002031 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002032 exit(1);
2033 }
2034
Willy Tarreau3eb10b82020-04-15 16:42:39 +02002035 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
2036 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
2037 exit(1);
2038 }
2039
Willy Tarreaubaaee002006-06-26 02:48:02 +02002040 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002041 struct peers *pr;
2042 struct proxy *px;
2043
Willy Tarreaubebd2122020-04-15 16:06:11 +02002044 if (warned & WARN_ANY)
2045 qfprintf(stdout, "Warnings were found.\n");
2046
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002047 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002048 if (pr->peers_fe)
2049 break;
2050
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002051 for (px = proxies_list; px; px = px->next)
Willy Tarreauc3914d42020-09-24 08:39:22 +02002052 if (!px->disabled && px->li_all)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002053 break;
2054
2055 if (pr || px) {
2056 /* At least one peer or one listener has been found */
2057 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02002058 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002059 }
2060 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2061 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002062 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002063
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002064 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002065 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002066
Willy Tarreaue6945732016-12-21 19:57:00 +01002067 list_for_each_entry(pcf, &post_check_list, list) {
2068 err_code |= pcf->fct();
2069 if (err_code & (ERR_ABORT|ERR_FATAL))
2070 exit(1);
2071 }
2072
Willy Tarreaubaaee002006-06-26 02:48:02 +02002073 if (cfg_maxconn > 0)
2074 global.maxconn = cfg_maxconn;
2075
Willy Tarreau4975d142021-03-13 11:00:33 +01002076 if (global.cli_fe)
2077 global.maxsock += global.cli_fe->maxconn;
Willy Tarreau8d687d82019-03-01 09:39:42 +01002078
2079 if (cfg_peers) {
2080 /* peers also need to bypass global maxconn */
2081 struct peers *p = cfg_peers;
2082
2083 for (p = cfg_peers; p; p = p->next)
2084 if (p->peers_fe)
2085 global.maxsock += p->peers_fe->maxconn;
2086 }
2087
Willy Tarreaubaaee002006-06-26 02:48:02 +02002088 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002089 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002090 global.pidfile = strdup(cfg_pidfile);
2091 }
2092
Willy Tarreaud0256482015-01-15 21:45:22 +01002093 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002094 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2095 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2096 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2097 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002098 *
2099 * If memmax is set, then it depends on which values are set. If
2100 * maxsslconn is set, we use memmax to determine how many cleartext
2101 * connections may be added, and set maxconn to the sum of the two.
2102 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2103 * the remaining amount of memory between memmax and the cleartext
2104 * connections. If neither are set, then it is considered that all
2105 * connections are SSL-capable, and maxconn is computed based on this,
2106 * then maxsslconn accordingly. We need to know if SSL is used on the
2107 * frontends, backends, or both, because when it's used on both sides,
2108 * we need twice the value for maxsslconn, but we only count the
2109 * handshake once since it is not performed on the two sides at the
2110 * same time (frontend-side is terminated before backend-side begins).
2111 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002112 * ssl_handshake_cost during its initialization. In any case, if
2113 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2114 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002115 */
Willy Tarreauac350932019-03-01 15:43:14 +01002116 ideal_maxconn = compute_ideal_maxconn();
2117
Willy Tarreaud0256482015-01-15 21:45:22 +01002118 if (!global.rlimit_memmax) {
2119 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002120 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002121 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2122 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2123 }
2124 }
2125#ifdef USE_OPENSSL
2126 else if (!global.maxconn && !global.maxsslconn &&
2127 (global.ssl_used_frontend || global.ssl_used_backend)) {
2128 /* memmax is set, compute everything automatically. Here we want
2129 * to ensure that all SSL connections will be served. We take
2130 * care of the number of sides where SSL is used, and consider
2131 * the worst case : SSL used on both sides and doing a handshake
2132 * simultaneously. Note that we can't have more than maxconn
2133 * handshakes at a time by definition, so for the worst case of
2134 * two SSL conns per connection, we count a single handshake.
2135 */
2136 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2137 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002138 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002139
2140 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2141 mem -= global.maxzlibmem;
2142 mem = mem * MEM_USABLE_RATIO;
2143
Willy Tarreau304e17e2020-03-10 17:54:54 +01002144 /* Principle: we test once to set maxconn according to the free
2145 * memory. If it results in values the system rejects, we try a
2146 * second time by respecting rlim_fd_max. If it fails again, we
2147 * go back to the initial value and will let the final code
2148 * dealing with rlimit report the error. That's up to 3 attempts.
2149 */
2150 do {
2151 global.maxconn = mem /
2152 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2153 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2154 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002155
Willy Tarreau304e17e2020-03-10 17:54:54 +01002156 if (retried == 1)
2157 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2158 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002159#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002160 if (global.maxconn > SYSTEM_MAXCONN)
2161 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002162#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002163 global.maxsslconn = sides * global.maxconn;
2164
2165 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2166 break;
2167 } while (retried++ < 2);
2168
Willy Tarreaud0256482015-01-15 21:45:22 +01002169 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2170 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2171 global.maxconn, global.maxsslconn);
2172 }
2173 else if (!global.maxsslconn &&
2174 (global.ssl_used_frontend || global.ssl_used_backend)) {
2175 /* memmax and maxconn are known, compute maxsslconn automatically.
2176 * maxsslconn being forced, we don't know how many of it will be
2177 * on each side if both sides are being used. The worst case is
2178 * when all connections use only one SSL instance because
2179 * handshakes may be on two sides at the same time.
2180 */
2181 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2182 int64_t mem = global.rlimit_memmax * 1048576ULL;
2183 int64_t sslmem;
2184
2185 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2186 mem -= global.maxzlibmem;
2187 mem = mem * MEM_USABLE_RATIO;
2188
Willy Tarreau87b09662015-04-03 00:22:06 +02002189 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002190 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2191 global.maxsslconn = round_2dig(global.maxsslconn);
2192
2193 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002194 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2195 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2196 "without SSL is %d, but %d was found and SSL is in use.\n",
2197 global.rlimit_memmax,
2198 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2199 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002200 exit(1);
2201 }
2202
2203 if (global.maxsslconn > sides * global.maxconn)
2204 global.maxsslconn = sides * global.maxconn;
2205
2206 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2207 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2208 }
2209#endif
2210 else if (!global.maxconn) {
2211 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2212 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2213 int64_t mem = global.rlimit_memmax * 1048576ULL;
2214 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002215 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002216
2217 if (global.ssl_used_frontend || global.ssl_used_backend)
2218 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2219
2220 mem -= global.maxzlibmem;
2221 mem = mem * MEM_USABLE_RATIO;
2222
2223 clearmem = mem;
2224 if (sides)
2225 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2226
Willy Tarreau304e17e2020-03-10 17:54:54 +01002227 /* Principle: we test once to set maxconn according to the free
2228 * memory. If it results in values the system rejects, we try a
2229 * second time by respecting rlim_fd_max. If it fails again, we
2230 * go back to the initial value and will let the final code
2231 * dealing with rlimit report the error. That's up to 3 attempts.
2232 */
2233 do {
2234 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2235 if (retried == 1)
2236 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2237 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002238#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002239 if (global.maxconn > SYSTEM_MAXCONN)
2240 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002241#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002242
Willy Tarreau304e17e2020-03-10 17:54:54 +01002243 if (clearmem <= 0 || !global.maxconn) {
2244 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2245 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2246 "is %d, but %d was found.\n",
2247 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002248 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002249 global.maxsslconn);
2250 exit(1);
2251 }
2252
2253 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2254 break;
2255 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002256
2257 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2258 if (sides && global.maxsslconn > sides * global.maxconn) {
2259 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2260 "to be limited to %d. Better reduce global.maxsslconn to get more "
2261 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2262 }
2263 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2264 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002265 }
2266
Willy Tarreaua409f302020-03-10 17:08:53 +01002267 global.maxsock = compute_ideal_maxsock(global.maxconn);
2268 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002269 if (!global.maxpipes)
2270 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002271
Olivier Houchard88698d92019-04-16 19:07:22 +02002272 /* update connection pool thresholds */
2273 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2274 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2275
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002276 proxy_adjust_all_maxconn();
2277
Willy Tarreau1db37712007-06-03 17:16:49 +02002278 if (global.tune.maxpollevents <= 0)
2279 global.tune.maxpollevents = MAX_POLL_EVENTS;
2280
Willy Tarreau060a7612021-03-10 11:06:26 +01002281 if (global.tune.runqueue_depth <= 0) {
2282 /* tests on various thread counts from 1 to 64 have shown an
2283 * optimal queue depth following roughly 1/sqrt(threads).
2284 */
2285 int s = my_flsl(global.nbthread);
2286 s += (global.nbthread / s); // roughly twice the sqrt.
2287 global.tune.runqueue_depth = RUNQUEUE_DEPTH * 2 / s;
2288 }
Olivier Houchard1599b802018-05-24 18:59:04 +02002289
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002290 if (global.tune.recv_enough == 0)
2291 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2292
Willy Tarreau27a674e2009-08-17 07:23:33 +02002293 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2294 global.tune.maxrewrite = global.tune.bufsize / 2;
2295
Willy Tarreaubaaee002006-06-26 02:48:02 +02002296 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2297 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002298 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002299 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2300 }
2301
William Lallemand095ba4c2017-06-01 17:38:50 +02002302 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002303 /* command line daemon mode inhibits foreground and debug modes mode */
2304 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002305 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002306 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002307
2308 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002309
William Lallemand095ba4c2017-06-01 17:38:50 +02002310 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002311 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002312 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002313 }
2314
William Lallemand095ba4c2017-06-01 17:38:50 +02002315 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002316 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002317 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 +02002318 global.nbproc = 1;
2319 }
2320
2321 if (global.nbproc < 1)
2322 global.nbproc = 1;
2323
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002324 if (global.nbthread < 1)
2325 global.nbthread = 1;
2326
Christopher Faulet3ef26392017-08-29 16:46:57 +02002327 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002328 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002329 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002330 exit(1);
2331 }
2332
Christopher Faulet96d44832017-11-14 22:02:30 +01002333 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002334 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002335 exit(1);
2336 }
2337
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002338 /*
2339 * Note: we could register external pollers here.
2340 * Built-in pollers have been registered before main().
2341 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002342
Willy Tarreau43b78992009-01-25 15:42:27 +01002343 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002344 disable_poller("kqueue");
2345
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002346 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2347 disable_poller("evports");
2348
Willy Tarreau43b78992009-01-25 15:42:27 +01002349 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002350 disable_poller("epoll");
2351
Willy Tarreau43b78992009-01-25 15:42:27 +01002352 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002353 disable_poller("poll");
2354
Willy Tarreau43b78992009-01-25 15:42:27 +01002355 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002356 disable_poller("select");
2357
2358 /* Note: we could disable any poller by name here */
2359
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002360 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002361 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002362 fprintf(stderr, "\n");
2363 list_filters(stderr);
2364 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002365
Willy Tarreau4f60f162007-04-08 16:39:58 +02002366 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002367 ha_alert("No polling mechanism available.\n"
2368 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2369 " is too low on this platform to support maxconn and the number of listeners\n"
2370 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2371 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2372 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2373 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2374 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2375 " check build settings using 'haproxy -vv'.\n\n",
2376 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002377 exit(1);
2378 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002379 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2380 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002381 }
2382
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002383 if (!global.node)
2384 global.node = strdup(hostname);
2385
Willy Tarreau02b092f2020-10-07 18:36:54 +02002386 /* stop disabled proxies */
2387 for (px = proxies_list; px; px = px->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02002388 if (px->disabled)
Willy Tarreau02b092f2020-10-07 18:36:54 +02002389 stop_proxy(px);
2390 }
2391
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002392 if (!hlua_post_init())
2393 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002394
Maxime de Roucy0f503922016-05-13 23:52:55 +02002395 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002396}
2397
Simon Horman6fb82592011-07-15 13:14:11 +09002398static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002399{
Simon Hormanac821422011-07-15 13:14:09 +09002400 struct acl_term_suite *suite, *suiteb;
2401 struct acl_term *term, *termb;
2402
Simon Horman6fb82592011-07-15 13:14:11 +09002403 if (!cond)
2404 return;
2405
2406 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2407 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2408 LIST_DEL(&term->list);
2409 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002410 }
Simon Horman6fb82592011-07-15 13:14:11 +09002411 LIST_DEL(&suite->list);
2412 free(suite);
2413 }
2414
2415 free(cond);
2416}
2417
Christopher Fauletcb550132019-12-17 11:25:46 +01002418static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002419{
Christopher Fauletcb550132019-12-17 11:25:46 +01002420 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002421
Christopher Fauletcb550132019-12-17 11:25:46 +01002422 list_for_each_entry_safe(rule, ruleb, rules, list) {
2423 LIST_DEL(&rule->list);
2424 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002425 if (rule->release_ptr)
2426 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002427 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002428 }
2429}
2430
Simon Horman6fb82592011-07-15 13:14:11 +09002431static void deinit_stick_rules(struct list *rules)
2432{
2433 struct sticking_rule *rule, *ruleb;
2434
2435 list_for_each_entry_safe(rule, ruleb, rules, list) {
2436 LIST_DEL(&rule->list);
2437 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002438 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002439 free(rule);
2440 }
2441}
2442
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002443void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002444{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002445 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002446 struct cap_hdr *h,*h_next;
2447 struct server *s,*s_next;
2448 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002449 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002450 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002451 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002452 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002453 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002454 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002455 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002456 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002457 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002458 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002459 struct build_opts_str *bol, *bolb;
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002460 struct post_deinit_fct *pdf, *pdfb;
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002461 struct proxy_deinit_fct *pxdf, *pxdfb;
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002462 struct server_deinit_fct *srvdf, *srvdfb;
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002463 struct per_thread_init_fct *tif, *tifb;
2464 struct per_thread_deinit_fct *tdf, *tdfb;
2465 struct per_thread_alloc_fct *taf, *tafb;
2466 struct per_thread_free_fct *tff, *tffb;
Tim Duesterhus34bef072020-07-04 11:49:50 +02002467 struct post_server_check_fct *pscf, *pscfb;
Tim Duesterhusfc854942020-09-10 19:46:42 +02002468 struct post_check_fct *pcf, *pcfb;
Tim Duesterhus53508d62020-09-10 19:46:40 +02002469 struct post_proxy_check_fct *ppcf, *ppcfb;
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002470 int cur_fd;
2471
2472 /* At this point the listeners state is weird:
2473 * - most listeners are still bound and referenced in their protocol
2474 * - some might be zombies that are not in their proto anymore, but
2475 * still appear in their proxy's listeners with a valid FD.
2476 * - some might be stopped and still appear in their proxy as FD #-1
2477 * - among all of them, some might be inherited hence shared and we're
2478 * not allowed to pause them or whatever, we must just close them.
2479 * - finally some are not listeners (pipes, logs, stdout, etc) and
2480 * must be left intact.
2481 *
2482 * The safe way to proceed is to unbind (and close) whatever is not yet
2483 * unbound so that no more receiver/listener remains alive. Then close
2484 * remaining listener FDs, which correspond to zombie listeners (those
2485 * belonging to disabled proxies that were in another process).
2486 * objt_listener() would be cleaner here but not converted yet.
2487 */
2488 protocol_unbind_all();
2489
2490 for (cur_fd = 0; cur_fd < global.maxsock; cur_fd++) {
Willy Tarreau1a3770c2020-10-14 12:13:51 +02002491 if (!fdtab || !fdtab[cur_fd].owner)
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002492 continue;
2493
Willy Tarreaua74cb382020-10-15 21:29:49 +02002494 if (fdtab[cur_fd].iocb == &sock_accept_iocb) {
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002495 struct listener *l = fdtab[cur_fd].owner;
2496
2497 BUG_ON(l->state != LI_INIT);
2498 unbind_listener(l);
2499 }
2500 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002501
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002502 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002503 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002504 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002505 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002506 free(p->cookie_name);
2507 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002508 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002509 free(p->lbprm.arg_str);
Christopher Fauletf5ea2692021-02-12 09:28:13 +01002510 free(p->server_state_file_name);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002511 free(p->capture_name);
2512 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002513 free(p->rdp_cookie_name);
William Lallemandefc5a9d2020-08-07 14:48:37 +02002514 free(p->invalid_rep);
2515 free(p->invalid_req);
Amaury Denoyelle69c5c3a2021-01-26 14:35:22 +01002516#if defined(CONFIG_HAP_TRANSPARENT)
2517 free(p->conn_src.bind_hdr_name);
2518#endif
Willy Tarreau62a61232013-04-12 18:13:46 +02002519 if (p->conf.logformat_string != default_http_log_format &&
2520 p->conf.logformat_string != default_tcp_log_format &&
2521 p->conf.logformat_string != clf_http_log_format)
2522 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002523
Willy Tarreau62a61232013-04-12 18:13:46 +02002524 free(p->conf.lfs_file);
2525 free(p->conf.uniqueid_format_string);
Tim Duesterhus18c63592020-07-04 11:49:42 +02002526 istfree(&p->header_unique_id);
Willy Tarreau62a61232013-04-12 18:13:46 +02002527 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002528 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2529 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002530
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002531 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2532 free(p->conf.logformat_sd_string);
2533 free(p->conf.lfsd_file);
2534
Willy Tarreaub80c2302007-11-30 20:51:32 +01002535 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2536 LIST_DEL(&cond->list);
2537 prune_acl_cond(cond);
2538 free(cond);
2539 }
2540
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002541 EXTRA_COUNTERS_FREE(p->extra_counters_fe);
2542 EXTRA_COUNTERS_FREE(p->extra_counters_be);
2543
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002544 /* build a list of unique uri_auths */
2545 if (!ua)
2546 ua = p->uri_auth;
2547 else {
2548 /* check if p->uri_auth is unique */
2549 for (uap = ua; uap; uap=uap->next)
2550 if (uap == p->uri_auth)
2551 break;
2552
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002553 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002554 /* add it, if it is */
2555 p->uri_auth->next = ua;
2556 ua = p->uri_auth;
2557 }
2558 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002559
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002560 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2561 LIST_DEL(&acl->list);
2562 prune_acl(acl);
2563 free(acl);
2564 }
2565
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002566 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2567 LIST_DEL(&srule->list);
2568 prune_acl_cond(srule->cond);
Tim Duesterhus826cf072020-07-04 11:49:44 +02002569 list_for_each_entry_safe(lf, lfb, &srule->expr, list) {
2570 LIST_DEL(&lf->list);
2571 release_sample_expr(lf->expr);
2572 free(lf->arg);
2573 free(lf);
2574 }
Tim Duesterhus6fb74a12020-07-04 11:49:43 +02002575 free(srule->file);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002576 free(srule->cond);
2577 free(srule);
2578 }
2579
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002580 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2581 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002582 if (rule->cond) {
2583 prune_acl_cond(rule->cond);
2584 free(rule->cond);
2585 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002586 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002587 free(rule);
2588 }
2589
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002590 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2591 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002592 if (rdr->cond) {
2593 prune_acl_cond(rdr->cond);
2594 free(rdr->cond);
2595 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002596 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002597 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2598 LIST_DEL(&lf->list);
2599 free(lf);
2600 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002601 free(rdr);
2602 }
2603
William Lallemand0f99e342011-10-12 17:50:54 +02002604 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2605 LIST_DEL(&log->list);
2606 free(log);
2607 }
2608
William Lallemand723b73a2012-02-08 16:37:49 +01002609 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2610 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002611 release_sample_expr(lf->expr);
2612 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002613 free(lf);
2614 }
2615
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002616 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2617 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002618 release_sample_expr(lf->expr);
2619 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002620 free(lf);
2621 }
2622
Tim Duesterhus79765782020-07-04 11:49:40 +02002623 list_for_each_entry_safe(lf, lfb, &p->format_unique_id, list) {
2624 LIST_DEL(&lf->list);
2625 release_sample_expr(lf->expr);
2626 free(lf->arg);
2627 free(lf);
2628 }
2629
Christopher Fauletcb550132019-12-17 11:25:46 +01002630 deinit_act_rules(&p->tcp_req.inspect_rules);
2631 deinit_act_rules(&p->tcp_rep.inspect_rules);
2632 deinit_act_rules(&p->tcp_req.l4_rules);
2633 deinit_act_rules(&p->tcp_req.l5_rules);
2634 deinit_act_rules(&p->http_req_rules);
2635 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002636 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002637
Simon Horman6fb82592011-07-15 13:14:11 +09002638 deinit_stick_rules(&p->storersp_rules);
2639 deinit_stick_rules(&p->sticking_rules);
2640
Willy Tarreaubaaee002006-06-26 02:48:02 +02002641 h = p->req_cap;
2642 while (h) {
2643 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002644 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002645 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002646 free(h);
2647 h = h_next;
2648 }/* end while(h) */
2649
2650 h = p->rsp_cap;
2651 while (h) {
2652 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002653 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002654 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002655 free(h);
2656 h = h_next;
2657 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002658
Willy Tarreaubaaee002006-06-26 02:48:02 +02002659 s = p->srv;
2660 while (s) {
2661 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002662
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002663 list_for_each_entry(srvdf, &server_deinit_list, list)
2664 srvdf->fct(s);
2665
Amaury Denoyelle828adf02021-03-16 17:20:15 +01002666 free_server(s);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002667 s = s_next;
2668 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002669
Willy Tarreau4348fad2012-09-20 16:48:07 +02002670 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreau4348fad2012-09-20 16:48:07 +02002671 LIST_DEL(&l->by_fe);
2672 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002673 free(l->name);
2674 free(l->counters);
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002675
2676 EXTRA_COUNTERS_FREE(l->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002677 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002678 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002679
Willy Tarreau4348fad2012-09-20 16:48:07 +02002680 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002681 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002682 if (bind_conf->xprt->destroy_bind_conf)
2683 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002684 free(bind_conf->file);
2685 free(bind_conf->arg);
2686 LIST_DEL(&bind_conf->by_fe);
2687 free(bind_conf);
2688 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002689
Christopher Fauletd7c91962015-04-30 11:48:27 +02002690 flt_deinit(p);
2691
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002692 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2693 pxdf->fct(p);
2694
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002695 free(p->desc);
2696 free(p->fwdfor_hdr_name);
2697
Olivier Houchard3f795f72019-04-17 22:51:06 +02002698 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002699
Willy Tarreaubafbe012017-11-24 17:34:44 +01002700 pool_destroy(p->req_cap_pool);
2701 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002702 if (p->table)
2703 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002704
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002705 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002706 p = p->next;
Willy Tarreaucd10def2020-10-17 18:48:47 +02002707 HA_RWLOCK_DESTROY(&p0->lbprm.lock);
Willy Tarreauac66d6b2020-10-20 17:24:27 +02002708 HA_RWLOCK_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002709 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002710 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002711
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002712 while (ua) {
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002713 struct stat_scope *scope, *scopep;
2714
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002715 uap = ua;
2716 ua = ua->next;
2717
Willy Tarreaua534fea2008-08-03 12:19:50 +02002718 free(uap->uri_prefix);
2719 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002720 free(uap->node);
2721 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002722
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002723 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002724 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002725
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002726 scope = uap->scope;
2727 while (scope) {
2728 scopep = scope;
2729 scope = scope->next;
2730
2731 free(scopep->px_id);
2732 free(scopep);
2733 }
2734
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002735 free(uap);
2736 }
2737
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002738 userlist_free(userlist);
2739
David Carlier834cb2e2015-09-25 12:02:25 +01002740 cfg_unregister_sections();
2741
Christopher Faulet0132d062017-07-26 15:33:35 +02002742 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002743
Willy Tarreau05554e62016-12-21 20:46:26 +01002744 list_for_each_entry(pdf, &post_deinit_list, list)
2745 pdf->fct();
2746
Willy Tarreau61cfdf42021-02-20 10:46:51 +01002747 ha_free(&global.log_send_hostname);
Dragan Dosen43885c72015-10-01 13:18:13 +02002748 chunk_destroy(&global.log_tag);
Willy Tarreau61cfdf42021-02-20 10:46:51 +01002749 ha_free(&global.chroot);
2750 ha_free(&global.pidfile);
2751 ha_free(&global.node);
2752 ha_free(&global.desc);
2753 ha_free(&oldpids);
2754 ha_free(&old_argv);
2755 ha_free(&localpeer);
2756 ha_free(&global.server_state_base);
2757 ha_free(&global.server_state_file);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002758 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002759 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002760
William Lallemand0f99e342011-10-12 17:50:54 +02002761 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2762 LIST_DEL(&log->list);
2763 free(log);
2764 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002765 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002766 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002767 LIST_DEL(&wl->list);
2768 free(wl);
2769 }
2770
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002771 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2772 if (bol->must_free)
2773 free((void *)bol->str);
2774 LIST_DEL(&bol->list);
2775 free(bol);
2776 }
2777
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002778 list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
2779 LIST_DEL(&pxdf->list);
2780 free(pxdf);
2781 }
2782
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002783 list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
2784 LIST_DEL(&pdf->list);
2785 free(pdf);
2786 }
2787
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002788 list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
2789 LIST_DEL(&srvdf->list);
2790 free(srvdf);
2791 }
2792
Tim Duesterhusfc854942020-09-10 19:46:42 +02002793 list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
2794 LIST_DEL(&pcf->list);
2795 free(pcf);
2796 }
2797
Tim Duesterhus34bef072020-07-04 11:49:50 +02002798 list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
2799 LIST_DEL(&pscf->list);
2800 free(pscf);
2801 }
2802
Tim Duesterhus53508d62020-09-10 19:46:40 +02002803 list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
2804 LIST_DEL(&ppcf->list);
2805 free(ppcf);
2806 }
2807
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002808 list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
2809 LIST_DEL(&tif->list);
2810 free(tif);
2811 }
2812
2813 list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
2814 LIST_DEL(&tdf->list);
2815 free(tdf);
2816 }
2817
2818 list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
2819 LIST_DEL(&taf->list);
2820 free(taf);
2821 }
2822
2823 list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
2824 LIST_DEL(&tff->list);
2825 free(tff);
2826 }
2827
Christopher Fauletff2613e2016-11-09 11:36:17 +01002828 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002829 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002830 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002831} /* end deinit() */
2832
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002833__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002834{
2835 deinit();
2836 exit(status);
2837}
William Lallemand72160322018-11-06 17:37:16 +01002838
Willy Tarreau918ff602011-07-25 16:33:49 +02002839/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002840void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002841{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002842 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002843
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002844 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002845 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002846 wake_expired_tasks();
2847
William Lallemand1aab50b2018-06-07 09:46:01 +02002848 /* check if we caught some signals and process them in the
2849 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002850 if (signal_queue_len && tid == 0) {
2851 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002852 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002853 }
2854
2855 /* Process a few tasks */
2856 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002857
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002858 /* also stop if we failed to cleanly stop all tasks */
2859 if (killed > 1)
2860 break;
2861
Willy Tarreau10146c92015-04-13 20:44:19 +02002862 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002863 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002864 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002865 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002866 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002867 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2868 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002869 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002870 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002871 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002872 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002873 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002874 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002875
Willy Tarreau4f46a352020-03-23 09:27:28 +01002876 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002877 int i;
2878
2879 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002880 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2881 /* notify all threads that stopping was just set */
2882 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002883 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002884 wake_thread(i);
2885 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002886 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002887
2888 /* stop when there's nothing left to do */
2889 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002890 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2891 /* wake all threads waiting on jobs==0 */
2892 for (i = 0; i < global.nbthread; i++)
2893 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2894 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002895 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002896 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002897 }
2898
Willy Tarreauc49ba522019-12-11 08:12:23 +01002899 /* If we have to sleep, measure how long */
2900 next = wake ? TICK_ETERNITY : next_timer_expiry();
2901
Willy Tarreau58b458d2008-06-29 22:40:23 +02002902 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002903 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002904
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002905 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002906 }
2907}
2908
Christopher Faulet1d17c102017-08-29 15:38:48 +02002909static void *run_thread_poll_loop(void *data)
2910{
Willy Tarreau082b6282019-05-22 14:42:12 +02002911 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002912 struct per_thread_init_fct *ptif;
2913 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002914 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002915 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002916 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2917 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002918
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002919 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002920 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002921
Willy Tarreauf6178242019-05-21 19:46:58 +02002922#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002923#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002924 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002925#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002926 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002927#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002928#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002929 /* Now, initialize one thread init at a time. This is better since
2930 * some init code is a bit tricky and may release global resources
2931 * after reallocating them locally. This will also ensure there is
2932 * no race on file descriptors allocation.
2933 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002934#ifdef USE_THREAD
2935 pthread_mutex_lock(&init_mutex);
2936#endif
2937 /* The first thread must set the number of threads left */
2938 if (!init_left)
2939 init_left = global.nbthread;
2940 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002941
Christopher Faulet1d17c102017-08-29 15:38:48 +02002942 tv_update_date(-1,-1);
2943
Willy Tarreau082b6282019-05-22 14:42:12 +02002944 /* per-thread alloc calls performed here are not allowed to snoop on
2945 * other threads, so they are free to initialize at their own rhythm
2946 * as long as they act as if they were alone. None of them may rely
2947 * on resources initialized by the other ones.
2948 */
2949 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2950 if (!ptaf->fct()) {
2951 ha_alert("failed to allocate resources for thread %u.\n", tid);
2952 exit(1);
2953 }
2954 }
2955
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002956 /* per-thread init calls performed here are not allowed to snoop on
2957 * other threads, so they are free to initialize at their own rhythm
2958 * as long as they act as if they were alone.
2959 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002960 list_for_each_entry(ptif, &per_thread_init_list, list) {
2961 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002962 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002963 exit(1);
2964 }
2965 }
2966
Willy Tarreau71092822019-06-10 09:51:04 +02002967 /* enabling protocols will result in fd_insert() calls to be performed,
2968 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002969 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002970 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002971 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002972 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002973
Willy Tarreau34a150c2019-06-11 09:16:41 +02002974#ifdef USE_THREAD
2975 pthread_cond_broadcast(&init_cond);
2976 pthread_mutex_unlock(&init_mutex);
2977
2978 /* now wait for other threads to finish starting */
2979 pthread_mutex_lock(&init_mutex);
2980 while (init_left)
2981 pthread_cond_wait(&init_cond, &init_mutex);
2982 pthread_mutex_unlock(&init_mutex);
2983#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002984
Willy Tarreaua45a8b52019-12-06 16:31:45 +01002985#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
2986 /* Let's refrain from using setuid executables. This way the impact of
2987 * an eventual vulnerability in a library remains limited. It may
2988 * impact external checks but who cares about them anyway ? In the
2989 * worst case it's possible to disable the option. Obviously we do this
2990 * in workers only. We can't hard-fail on this one as it really is
2991 * implementation dependent though we're interested in feedback, hence
2992 * the warning.
2993 */
2994 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
2995 static int warn_fail;
2996 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
2997 ha_warning("Failed to disable setuid, please report to developers with detailed "
2998 "information about your operating system. You can silence this warning "
2999 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
3000 }
3001 }
3002#endif
3003
Willy Tarreaud96f1122019-12-03 07:07:36 +01003004#if defined(RLIMIT_NPROC)
3005 /* all threads have started, it's now time to prevent any new thread
3006 * or process from starting. Obviously we do this in workers only. We
3007 * can't hard-fail on this one as it really is implementation dependent
3008 * though we're interested in feedback, hence the warning.
3009 */
3010 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
3011 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
3012 static int warn_fail;
3013
3014 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3015 ha_warning("Failed to disable forks, please report to developers with detailed "
3016 "information about your operating system. You can silence this warning "
3017 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
3018 }
3019 }
3020#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003021 run_poll_loop();
3022
3023 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
3024 ptdf->fct();
3025
Willy Tarreau082b6282019-05-22 14:42:12 +02003026 list_for_each_entry(ptff, &per_thread_free_list, list)
3027 ptff->fct();
3028
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003029#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01003030 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003031 if (tid > 0)
3032 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003033#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003034 return NULL;
3035}
Christopher Faulet1d17c102017-08-29 15:38:48 +02003036
William Dauchyf9af9d72019-11-17 15:47:16 +01003037/* set uid/gid depending on global settings */
3038static void set_identity(const char *program_name)
3039{
3040 if (global.gid) {
3041 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
3042 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3043 " without 'uid'/'user' is generally useless.\n", program_name);
3044
3045 if (setgid(global.gid) == -1) {
3046 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
3047 protocol_unbind_all();
3048 exit(1);
3049 }
3050 }
3051
3052 if (global.uid && setuid(global.uid) == -1) {
3053 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
3054 protocol_unbind_all();
3055 exit(1);
3056 }
3057}
3058
Willy Tarreaubaaee002006-06-26 02:48:02 +02003059int main(int argc, char **argv)
3060{
3061 int err, retry;
3062 struct rlimit limit;
Willy Tarreau269ab312012-09-05 08:02:48 +02003063 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003064
Olivier Houchard5fa300d2018-02-03 15:15:21 +01003065 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003066
Willy Tarreauff9c9142019-02-07 10:39:36 +01003067 /* this can only safely be done here, though it's optimized away by
3068 * the compiler.
3069 */
3070 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3071 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3072 "HAProxy was built with value %d, please fix it and rebuild.\n",
3073 LONGBITS, MAX_PROCS);
3074 exit(1);
3075 }
3076
Willy Tarreaubf696402019-03-01 10:09:28 +01003077 /* take a copy of initial limits before we possibly change them */
3078 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau2bd0f812020-10-13 15:36:08 +02003079
3080 if (limit.rlim_max == RLIM_INFINITY)
3081 limit.rlim_max = limit.rlim_cur;
Willy Tarreaubf696402019-03-01 10:09:28 +01003082 rlim_fd_cur_at_boot = limit.rlim_cur;
3083 rlim_fd_max_at_boot = limit.rlim_max;
3084
Willy Tarreau5794fb02018-11-25 18:43:29 +01003085 /* process all initcalls in order of potential dependency */
3086 RUN_INITCALLS(STG_PREPARE);
3087 RUN_INITCALLS(STG_LOCK);
3088 RUN_INITCALLS(STG_ALLOC);
3089 RUN_INITCALLS(STG_POOL);
3090 RUN_INITCALLS(STG_REGISTER);
3091 RUN_INITCALLS(STG_INIT);
3092
Emeric Bruncf20bf12010-10-22 16:06:11 +02003093 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003094 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3095 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3096 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003097 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003098
Willy Tarreaue437c442010-03-17 18:02:46 +01003099 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3100 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3101 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003102 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003103 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003104
Willy Tarreaudc23a922011-02-16 11:10:36 +01003105 /* ulimits */
3106 if (!global.rlimit_nofile)
3107 global.rlimit_nofile = global.maxsock;
3108
3109 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003110 limit.rlim_cur = global.rlimit_nofile;
3111 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3112
Willy Tarreaudc23a922011-02-16 11:10:36 +01003113 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003114 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003115 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3116 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3117 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003118 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003119 }
3120 else {
3121 /* try to set it to the max possible at least */
3122 limit.rlim_cur = limit.rlim_max;
3123 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3124 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003125
William Dauchya5194602020-03-28 19:29:58 +01003126 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003127 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3128 global.rlimit_nofile = limit.rlim_cur;
3129 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003130 }
3131 }
3132
3133 if (global.rlimit_memmax) {
3134 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003135 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003136#ifdef RLIMIT_AS
3137 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003138 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3139 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3140 argv[0], global.rlimit_memmax);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003141 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003142 }
3143 else
William Dauchya5194602020-03-28 19:29:58 +01003144 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003145 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003146 }
3147#else
3148 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003149 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3150 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3151 argv[0], global.rlimit_memmax);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003152 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003153 }
3154 else
William Dauchya5194602020-03-28 19:29:58 +01003155 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003156 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003157 }
3158#endif
3159 }
3160
Olivier Houchardf73629d2017-04-05 22:33:04 +02003161 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003162 if (strcmp("/dev/null", old_unixsocket) != 0) {
Willy Tarreau42961742020-08-28 18:42:45 +02003163 if (sock_get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003164 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003165 if (!(global.mode & MODE_MWORKER))
3166 exit(1);
3167 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003168 }
3169 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003170 get_cur_unixsocket();
3171
Willy Tarreaubaaee002006-06-26 02:48:02 +02003172 /* We will loop at most 100 times with 10 ms delay each time.
3173 * That's at most 1 second. We only send a signal to old pids
3174 * if we cannot grab at least one port.
3175 */
3176 retry = MAX_START_RETRIES;
3177 err = ERR_NONE;
3178 while (retry >= 0) {
3179 struct timeval w;
Willy Tarreaue91bff22020-09-02 11:11:43 +02003180 err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003181 /* exit the loop on no error or fatal error */
3182 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003183 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003184 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003185 break;
3186
3187 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3188 * listening sockets. So on those platforms, it would be wiser to
3189 * simply send SIGUSR1, which will not be undoable.
3190 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003191 if (tell_old_pids(SIGTTOU) == 0) {
3192 /* no need to wait if we can't contact old pids */
3193 retry = 0;
3194 continue;
3195 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003196 /* give some time to old processes to stop listening */
3197 w.tv_sec = 0;
3198 w.tv_usec = 10*1000;
3199 select(0, NULL, NULL, NULL, &w);
3200 retry--;
3201 }
3202
Willy Tarreaue91bff22020-09-02 11:11:43 +02003203 /* Note: protocol_bind_all() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003204 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaue91bff22020-09-02 11:11:43 +02003205 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreauf68da462009-06-09 14:36:00 +02003206 if (retry != MAX_START_RETRIES && nb_oldpids) {
3207 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003208 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003209 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003210 exit(1);
3211 }
3212
William Lallemand944e6192018-11-21 15:48:31 +01003213 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003214 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003215 /* Note: we don't have to send anything to the old pids because we
3216 * never stopped them. */
3217 exit(1);
3218 }
3219
Willy Tarreaue91bff22020-09-02 11:11:43 +02003220 /* Ok, all listeners should now be bound, close any leftover sockets
Olivier Houchardf73629d2017-04-05 22:33:04 +02003221 * the previous process gave us, we don't need them anymore
3222 */
3223 while (xfer_sock_list != NULL) {
3224 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3225 close(xfer_sock_list->fd);
3226 free(xfer_sock_list->iface);
3227 free(xfer_sock_list->namespace);
3228 free(xfer_sock_list);
3229 xfer_sock_list = tmpxfer;
3230 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003231
Willy Tarreaubaaee002006-06-26 02:48:02 +02003232 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003233 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3234 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003235
Willy Tarreaubaaee002006-06-26 02:48:02 +02003236 /* MODE_QUIET can inhibit alerts and warnings below this line */
3237
PiBa-NL149a81a2017-12-25 21:03:31 +01003238 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3239 /* either stdin/out/err are already closed or should stay as they are. */
3240 if ((global.mode & MODE_DAEMON)) {
3241 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3242 global.mode &= ~MODE_VERBOSE;
3243 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3244 }
3245 } else {
3246 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3247 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003248 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003249 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003250 }
3251
3252 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003253 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003254 unlink(global.pidfile);
3255 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3256 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003257 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003258 if (nb_oldpids)
3259 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003260 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003261 exit(1);
3262 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003263 }
3264
Willy Tarreaub38651a2007-03-24 17:24:39 +01003265 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003266 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3267 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003268 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003269 exit(1);
3270 }
3271
Jackie Tapia749f74c2020-07-22 18:59:40 -05003272 /* If the user is not root, we'll still let them try the configuration
3273 * but we inform them that unexpected behaviour may occur.
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003274 */
3275 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003276 ha_warning("[%s.main()] Some options which require full privileges"
3277 " might not work well.\n"
3278 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003279
William Lallemand095ba4c2017-06-01 17:38:50 +02003280 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3281
3282 /* chroot if needed */
3283 if (global.chroot != NULL) {
3284 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003285 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003286 if (nb_oldpids)
3287 tell_old_pids(SIGTTIN);
3288 protocol_unbind_all();
3289 exit(1);
3290 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003291 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003292 }
3293
William Lallemand944e6192018-11-21 15:48:31 +01003294 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003295 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003296
William Lallemand27edc4b2019-05-07 17:49:33 +02003297 /* send a SIGTERM to workers who have a too high reloads number */
3298 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3299 mworker_kill_max_reloads(SIGTERM);
3300
William Lallemand8a361b52017-06-20 11:20:33 +02003301 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3302 nb_oldpids = 0;
Willy Tarreau61cfdf42021-02-20 10:46:51 +01003303 ha_free(&oldpids);
William Lallemand8a361b52017-06-20 11:20:33 +02003304 }
3305
3306
Willy Tarreaubaaee002006-06-26 02:48:02 +02003307 /* Note that any error at this stage will be fatal because we will not
3308 * be able to restart the old pids.
3309 */
3310
William Dauchyf9af9d72019-11-17 15:47:16 +01003311 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3312 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003313
Willy Tarreaubaaee002006-06-26 02:48:02 +02003314 /* check ulimits */
3315 limit.rlim_cur = limit.rlim_max = 0;
3316 getrlimit(RLIMIT_NOFILE, &limit);
3317 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003318 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3319 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3320 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3321 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3322 global.maxsock);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003323 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003324 }
3325 else
3326 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
William Dauchya5194602020-03-28 19:29:58 +01003327 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003328 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3329 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003330 }
3331
William Lallemand944e6192018-11-21 15:48:31 +01003332 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003333 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003334 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003335 int ret = 0;
3336 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003337 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003338
William Lallemand095ba4c2017-06-01 17:38:50 +02003339 /*
3340 * if daemon + mworker: must fork here to let a master
3341 * process live in background before forking children
3342 */
William Lallemand73b85e72017-06-01 17:38:51 +02003343
3344 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3345 && (global.mode & MODE_MWORKER)
3346 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003347 ret = fork();
3348 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003349 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003350 protocol_unbind_all();
3351 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003352 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003353 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003354 } else /* change the process group ID in the child (master process) */
3355 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003356 }
William Lallemande20b6a62017-06-01 17:38:55 +02003357
William Lallemande20b6a62017-06-01 17:38:55 +02003358
William Lallemanddeed7802017-11-06 11:00:04 +01003359 /* if in master-worker mode, write the PID of the father */
3360 if (global.mode & MODE_MWORKER) {
3361 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003362 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003363 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003364 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003365 }
3366
Willy Tarreaubaaee002006-06-26 02:48:02 +02003367 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003368 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003369 if (global.mode & MODE_MWORKER)
3370 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003371 for (proc = 0; proc < global.nbproc; proc++) {
3372 ret = fork();
3373 if (ret < 0) {
3374 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3375 protocol_unbind_all();
3376 exit(1); /* there has been an error */
3377 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003378 else if (ret == 0) { /* child breaks here */
3379 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003380 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003381 }
William Lallemand944e6192018-11-21 15:48:31 +01003382 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3383 char pidstr[100];
3384 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003385 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003386 }
3387 if (global.mode & MODE_MWORKER) {
3388 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003389
William Lallemand220567e2018-11-21 18:04:53 +01003390 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003391 /* find the right mworker_proc */
3392 list_for_each_entry(child, &proc_list, list) {
3393 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003394 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003395 child->timestamp = now.tv_sec;
3396 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003397 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003398 break;
3399 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003400 }
3401 }
William Lallemandbc193052018-09-11 10:06:26 +02003402
William Lallemand944e6192018-11-21 15:48:31 +01003403 relative_pid++; /* each child will get a different one */
3404 pid_bit <<= 1;
3405 }
3406 } else {
3407 /* wait mode */
3408 global.nbproc = 1;
3409 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003410 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003411
3412#ifdef USE_CPU_AFFINITY
3413 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003414 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003415 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003416#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003417 {
3418 cpuset_t cpuset;
3419 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003420 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003421
3422 CPU_ZERO(&cpuset);
3423 while ((i = ffsl(cpu_map)) > 0) {
3424 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003425 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003426 }
3427 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3428 }
David Carlier2d0493a2020-12-02 21:14:51 +00003429#elif defined(__linux__) || defined(__DragonFly__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003430 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003431#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003432#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003433 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003434 if (pidfd >= 0) {
3435 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3436 close(pidfd);
3437 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003438
3439 /* We won't ever use this anymore */
Willy Tarreau61cfdf42021-02-20 10:46:51 +01003440 ha_free(&global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003441
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003442 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003443 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003444
3445 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3446 (global.mode & MODE_DAEMON)) {
3447 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003448 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3449 stdio_quiet(-1);
3450
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003451 global.mode &= ~MODE_VERBOSE;
3452 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003453 }
3454
William Lallemandb3f2be32018-09-11 10:06:18 +02003455 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003456 /* should never get there */
3457 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003458 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003459#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003460 ssl_free_dh();
3461#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003462 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003463 }
3464
William Lallemandcb11fd22017-06-01 17:38:52 +02003465 /* child must never use the atexit function */
3466 atexit_flag = 0;
3467
William Lallemandbc193052018-09-11 10:06:26 +02003468 /* close useless master sockets */
3469 if (global.mode & MODE_MWORKER) {
3470 struct mworker_proc *child, *it;
3471 master = 0;
3472
William Lallemand309dc9a2018-10-26 14:47:45 +02003473 mworker_cli_proxy_stop();
3474
William Lallemandbc193052018-09-11 10:06:26 +02003475 /* free proc struct of other processes */
3476 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003477 /* close the FD of the master side for all
3478 * workers, we don't need to close the worker
3479 * side of other workers since it's done with
3480 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003481 if (child->ipc_fd[0] >= 0)
3482 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003483 if (child->relative_pid == relative_pid &&
3484 child->reloads == 0) {
3485 /* keep this struct if this is our pid */
3486 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003487 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003488 }
William Lallemandbc193052018-09-11 10:06:26 +02003489 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003490 mworker_free_child(child);
3491 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003492 }
3493 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003494
William Lallemande1340412017-12-28 16:09:36 +01003495 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3496 devnullfd = open("/dev/null", O_RDWR, 0);
3497 if (devnullfd < 0) {
3498 ha_alert("Cannot open /dev/null\n");
3499 exit(EXIT_FAILURE);
3500 }
3501 }
3502
William Lallemand095ba4c2017-06-01 17:38:50 +02003503 /* Must chroot and setgid/setuid in the children */
3504 /* chroot if needed */
3505 if (global.chroot != NULL) {
3506 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003507 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003508 if (nb_oldpids)
3509 tell_old_pids(SIGTTIN);
3510 protocol_unbind_all();
3511 exit(1);
3512 }
3513 }
3514
Willy Tarreau61cfdf42021-02-20 10:46:51 +01003515 ha_free(&global.chroot);
William Dauchyf9af9d72019-11-17 15:47:16 +01003516 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003517
William Lallemand7f80eb22017-05-26 18:19:55 +02003518 /* pass through every cli socket, and check if it's bound to
3519 * the current process and if it exposes listeners sockets.
3520 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3521 * */
3522
Willy Tarreau4975d142021-03-13 11:00:33 +01003523 if (global.cli_fe) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003524 struct bind_conf *bind_conf;
3525
Willy Tarreau4975d142021-03-13 11:00:33 +01003526 list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003527 if (bind_conf->level & ACCESS_FD_LISTENERS) {
Willy Tarreaue26993c2020-09-03 07:18:55 +02003528 if (!bind_conf->settings.bind_proc || bind_conf->settings.bind_proc & (1UL << proc)) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003529 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3530 break;
3531 }
3532 }
3533 }
3534 }
3535
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003536 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003537 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003538 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003539 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003540 if (!(px->bind_proc & (1UL << proc)))
3541 stop_proxy(px);
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003542 }
3543 px = px->next;
3544 }
3545
Emeric Brunc47ba592020-10-07 10:13:10 +02003546 /* we might have to unbind some log forward proxies from some processes */
3547 px = cfg_log_forward;
3548 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003549 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003550 if (!(px->bind_proc & (1UL << proc)))
3551 stop_proxy(px);
Emeric Brunc47ba592020-10-07 10:13:10 +02003552 }
3553 px = px->next;
3554 }
3555
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003556 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003557 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003558 if (!curpeers->peers_fe)
3559 continue;
3560
3561 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3562 continue;
3563
3564 stop_proxy(curpeers->peers_fe);
3565 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003566 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003567 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003568 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003569 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003570 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003571 curpeers->peers_fe = NULL;
3572 }
3573
William Lallemand2e8fad92018-11-13 16:18:23 +01003574 /*
3575 * This is only done in daemon mode because we might want the
3576 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3577 * we should now close the 3 first FDs to ensure that we can
3578 * detach from the TTY. We MUST NOT do it in other cases since
3579 * it would have already be done, and 0-2 would have been
3580 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003581 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003582 if ((global.mode & MODE_DAEMON) &&
3583 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003584 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003585 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003586 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003587 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3588 }
3589 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003590 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3591 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003592 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003593 }
3594
William Dauchye039f262019-11-17 15:47:15 +01003595 /* try our best to re-enable core dumps depending on system capabilities.
3596 * What is addressed here :
3597 * - remove file size limits
3598 * - remove core size limits
3599 * - mark the process dumpable again if it lost it due to user/group
3600 */
3601 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3602 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3603
3604#if defined(RLIMIT_FSIZE)
3605 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3606 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3607 ha_alert("[%s.main()] Failed to set the raise the maximum "
3608 "file size.\n", argv[0]);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003609 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003610 }
3611 else
3612 ha_warning("[%s.main()] Failed to set the raise the maximum "
William Dauchya5194602020-03-28 19:29:58 +01003613 "file size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003614 }
3615#endif
3616
3617#if defined(RLIMIT_CORE)
3618 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3619 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3620 ha_alert("[%s.main()] Failed to set the raise the core "
3621 "dump size.\n", argv[0]);
Jerome Magnin50f757c2021-01-12 20:19:38 +01003622 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003623 }
3624 else
3625 ha_warning("[%s.main()] Failed to set the raise the core "
William Dauchya5194602020-03-28 19:29:58 +01003626 "dump size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003627 }
3628#endif
3629
3630#if defined(USE_PRCTL)
3631 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3632 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3633 "no core will be dumped.\n", argv[0]);
3634#endif
3635 }
3636
Christopher Faulete3a5e352017-10-24 13:53:54 +02003637 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003638 /*
3639 * That's it : the central polling loop. Run until we stop.
3640 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003641#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003642 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003643 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003644 int i;
3645
William Lallemand1aab50b2018-06-07 09:46:01 +02003646 /* ensure the signals will be blocked in every thread */
3647 sigfillset(&blocked_sig);
3648 sigdelset(&blocked_sig, SIGPROF);
3649 sigdelset(&blocked_sig, SIGBUS);
3650 sigdelset(&blocked_sig, SIGFPE);
3651 sigdelset(&blocked_sig, SIGILL);
3652 sigdelset(&blocked_sig, SIGSEGV);
3653 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3654
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003655 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003656 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003657 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003658 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003659
Christopher Faulet62519022017-10-16 15:49:32 +02003660#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003661 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003662 if (global.cpu_map.proc_t1[relative_pid-1])
3663 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3664
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003665 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003666 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003667 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003668
Willy Tarreau421f02e2018-01-20 18:19:22 +01003669 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003670 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003671#if defined(__APPLE__)
3672 int j;
3673 unsigned long cpu_map = global.cpu_map.thread[i];
3674
3675 while ((j = ffsl(cpu_map)) > 0) {
3676 thread_affinity_policy_data_t cpu_set = { j - 1 };
3677 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3678 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3679 cpu_map &= ~(1UL << (j - 1));
3680 }
3681#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003682#if defined(__FreeBSD__) || defined(__NetBSD__)
3683 cpuset_t cpuset;
3684#else
3685 cpu_set_t cpuset;
3686#endif
3687 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003688 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003689
3690 CPU_ZERO(&cpuset);
3691
3692 while ((j = ffsl(cpu_map)) > 0) {
3693 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003694 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003695 }
David Carliera92c5ce2019-09-13 05:03:12 +01003696 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003697 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003698#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003699 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003700 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003701#endif /* !USE_CPU_AFFINITY */
3702
William Lallemand1aab50b2018-06-07 09:46:01 +02003703 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003704 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003705
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003706 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003707 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003708
3709 /* Wait the end of other threads */
3710 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003711 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003712
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003713#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3714 show_lock_stats();
3715#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003716 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003717#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003718 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003719 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003720#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003721
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003722 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003723}
3724
Willy Tarreaubaaee002006-06-26 02:48:02 +02003725/*
3726 * Local variables:
3727 * c-indent-level: 8
3728 * c-basic-offset: 8
3729 * End:
3730 */