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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau71f95fa2020-01-22 10:34:58 +01003 * Copyright 2000-2020 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>
Willy Tarreaudfd3de82020-06-04 23:46:14 +0200122#include <haproxy/stream.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +0200123#include <haproxy/task.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +0200124#include <haproxy/thread.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200125#include <haproxy/time.h>
126#include <haproxy/tools.h>
127#include <haproxy/uri_auth-t.h>
Willy Tarreaua1718922020-06-04 16:25:31 +0200128#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200129#include <haproxy/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200130
Willy Tarreaubaaee002006-06-26 02:48:02 +0200131
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100132/* array of init calls for older platforms */
133DECLARE_INIT_STAGES;
134
Willy Tarreau477ecd82010-01-03 21:12:30 +0100135/* list of config files */
136static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200137int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100138int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100139unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100140unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200141
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100142volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100143volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100144
Willy Tarreaubaaee002006-06-26 02:48:02 +0200145/* global options */
146struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100147 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100148 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100149 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200150 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200151 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100152 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100153 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100154 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200155 .unix_bind = {
156 .ux = {
157 .uid = -1,
158 .gid = -1,
159 .mode = 0,
160 }
161 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200162 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100163 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100164 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100165 .maxrewrite = MAXREWRITE,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100166 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
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;
351 int (*fct)();
352};
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. */
523void hap_register_per_thread_free(int (*fct)())
524{
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
Willy Tarreau7728ed32019-03-27 13:20:08 +0100588#ifdef BUILD_FEATURES
589 "\n\nFeature list : " BUILD_FEATURES
590#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200591 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100592 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200593 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100594 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200595
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100596 list_for_each_entry(item, &build_opts_list, list) {
597 puts(item->str);
598 }
599
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100600 putchar('\n');
601
Willy Tarreaube5b6852009-10-03 18:57:08 +0200602 list_pollers(stdout);
603 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200604 list_mux_proto(stdout);
605 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100606 list_services(stdout);
607 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100608 list_filters(stdout);
609 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100610}
611
Willy Tarreaubaaee002006-06-26 02:48:02 +0200612/*
613 * This function prints the command line usage and exits
614 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100615static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200616{
617 display_version();
618 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200619 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200620 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200621 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100622 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200623 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200624 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200625 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200626 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200627 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100628#if defined(USE_SYSTEMD)
629 " -Ws master-worker mode with systemd notify support.\n"
630#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200631 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200632 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100633 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200634 " -m limits the usable amount of memory (in MB)\n"
635 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200636 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200637 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200638#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200639 " -de disables epoll() usage even when available\n"
640#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200641#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200642 " -dk disables kqueue() usage even when available\n"
643#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200644#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000645 " -dv disables event ports usage even when available\n"
646#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200647#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200648 " -dp disables poll() usage even when available\n"
649#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200650#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100651 " -dS disables splice usage (broken on old kernels)\n"
652#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200653#if defined(USE_GETADDRINFO)
654 " -dG disables getaddrinfo() usage\n"
655#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000656#if defined(SO_REUSEPORT)
657 " -dR disables SO_REUSEPORT usage\n"
658#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100659 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100660 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200661 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200662 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200663 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200664 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200665 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100666 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200667 exit(1);
668}
669
670
671
672/*********************************************************************/
673/* more specific functions ***************************************/
674/*********************************************************************/
675
William Lallemand73b85e72017-06-01 17:38:51 +0200676/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
677 * pids the signal was correctly delivered to.
678 */
William Lallemande25473c2019-04-01 11:29:56 +0200679int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200680{
681 int p;
682 int ret = 0;
683 for (p = 0; p < nb_oldpids; p++)
684 if (kill(oldpids[p], sig) == 0)
685 ret++;
686 return ret;
687}
688
William Lallemand75ea0a02017-11-15 19:02:58 +0100689/*
William Lallemand73b85e72017-06-01 17:38:51 +0200690 * remove a pid forom the olpid array and decrease nb_oldpids
691 * return 1 pid was found otherwise return 0
692 */
693
694int delete_oldpid(int pid)
695{
696 int i;
697
698 for (i = 0; i < nb_oldpids; i++) {
699 if (oldpids[i] == pid) {
700 oldpids[i] = oldpids[nb_oldpids - 1];
701 oldpids[nb_oldpids - 1] = 0;
702 nb_oldpids--;
703 return 1;
704 }
705 }
706 return 0;
707}
708
William Lallemand85b0bd92017-06-01 17:38:53 +0200709
710static void get_cur_unixsocket()
711{
712 /* if -x was used, try to update the stat socket if not available anymore */
713 if (global.stats_fe) {
714 struct bind_conf *bind_conf;
715
716 /* pass through all stats socket */
717 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
718 struct listener *l;
719
720 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
721
Willy Tarreau37159062020-08-27 07:48:42 +0200722 if (l->rx.addr.ss_family == AF_UNIX &&
William Lallemand85b0bd92017-06-01 17:38:53 +0200723 (bind_conf->level & ACCESS_FD_LISTENERS)) {
724 const struct sockaddr_un *un;
725
Willy Tarreau37159062020-08-27 07:48:42 +0200726 un = (struct sockaddr_un *)&l->rx.addr;
William Lallemand85b0bd92017-06-01 17:38:53 +0200727 /* priority to old_unixsocket */
728 if (!cur_unixsocket) {
729 cur_unixsocket = strdup(un->sun_path);
730 } else {
731 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
732 free(cur_unixsocket);
733 cur_unixsocket = strdup(old_unixsocket);
734 return;
735 }
736 }
737 }
738 }
739 }
740 }
741 if (!cur_unixsocket && old_unixsocket)
742 cur_unixsocket = strdup(old_unixsocket);
743}
744
William Lallemand73b85e72017-06-01 17:38:51 +0200745/*
746 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800747 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200748 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100749void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200750{
William Lallemand00417412020-06-05 14:08:41 +0200751 char **next_argv = NULL;
752 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200753 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200754 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200755 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100756 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100757 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200758
759 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100760#if defined(USE_SYSTEMD)
761 if (global.tune.options & GTUNE_USE_SYSTEMD)
762 sd_notify(0, "RELOADING=1");
763#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200764 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
765
William Lallemandbc193052018-09-11 10:06:26 +0200766 mworker_proc_list_to_env(); /* put the children description in the env */
767
William Lallemand7c756a82018-11-26 11:53:40 +0100768 /* during the reload we must ensure that every FDs that can't be
769 * reuse (ie those that are not referenced in the proc_list)
770 * are closed or they will leak. */
771
772 /* close the listeners FD */
773 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200774
775 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
776 /* close the poller FD and the thread waker pipe FD */
777 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
778 ptdf->fct();
779 if (fdtab)
780 deinit_pollers();
781 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200782#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200783 /* close random device FDs */
784 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100785#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100786
Willy Tarreau8dca1952019-03-01 10:21:55 +0100787 /* restore the initial FD limits */
788 limit.rlim_cur = rlim_fd_cur_at_boot;
789 limit.rlim_max = rlim_fd_max_at_boot;
790 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
791 getrlimit(RLIMIT_NOFILE, &limit);
792 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
793 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
794 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
795 }
796
William Lallemand73b85e72017-06-01 17:38:51 +0200797 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200798 while (old_argv[old_argc])
799 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200800
William Lallemand85b0bd92017-06-01 17:38:53 +0200801 /* 1 for haproxy -sf, 2 for -x /socket */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200802 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1,
803 sizeof(*next_argv));
William Lallemand73b85e72017-06-01 17:38:51 +0200804 if (next_argv == NULL)
805 goto alloc_error;
806
William Lallemand00417412020-06-05 14:08:41 +0200807 /* copy the program name */
808 next_argv[next_argc++] = old_argv[0];
809
810 /* insert the new options just after argv[0] in case we have a -- */
811
William Lallemand73b85e72017-06-01 17:38:51 +0200812 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200813 if (mworker_child_nb() > 0) {
814 struct mworker_proc *child;
815
William Lallemand73b85e72017-06-01 17:38:51 +0200816 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200817
818 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100819 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200820 continue;
William Lallemand00417412020-06-05 14:08:41 +0200821 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200822 goto alloc_error;
823 msg = NULL;
824 }
825 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200826 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200827 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200828 next_argv[next_argc++] = "-x";
829 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200830 }
831
William Lallemand00417412020-06-05 14:08:41 +0200832 /* copy the previous options */
833 for (i = 1; i < old_argc; i++)
834 next_argv[next_argc++] = old_argv[i];
835
Christopher Faulet767a84b2017-11-24 16:50:31 +0100836 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200837 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100838 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200839
Christopher Faulet767a84b2017-11-24 16:50:31 +0100840 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand9fc6c972020-06-08 10:01:13 +0200841 free(next_argv);
842 next_argv = NULL;
William Lallemand722d4ca2017-11-15 19:02:55 +0100843 return;
844
William Lallemand73b85e72017-06-01 17:38:51 +0200845alloc_error:
William Lallemand00417412020-06-05 14:08:41 +0200846 free(next_argv);
847 next_argv = NULL;
Joseph Herlant07a08342018-11-15 10:43:05 -0800848 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200849 return;
850}
851
William Lallemandb3f2be32018-09-11 10:06:18 +0200852static void mworker_loop()
853{
854
855#if defined(USE_SYSTEMD)
856 if (global.tune.options & GTUNE_USE_SYSTEMD)
857 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
858#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200859 /* Busy polling makes no sense in the master :-) */
860 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200861
William Lallemandbc193052018-09-11 10:06:26 +0200862 master = 1;
863
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100864 signal_unregister(SIGTTIN);
865 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100866 signal_unregister(SIGUSR1);
867 signal_unregister(SIGHUP);
868 signal_unregister(SIGQUIT);
869
William Lallemandb3f2be32018-09-11 10:06:18 +0200870 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
871 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100872 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
873 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200874 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
875 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
876 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
877 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
878
879 mworker_unblock_signals();
880 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100881 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200882
William Lallemandbc193052018-09-11 10:06:26 +0200883 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
884 some SIGCHLD were lost */
885
William Lallemandb3f2be32018-09-11 10:06:18 +0200886 global.nbthread = 1;
887 relative_pid = 1;
888 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100889 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200890
William Lallemand2672eb92018-12-14 15:52:39 +0100891#ifdef USE_THREAD
892 tid_bit = 1;
893 all_threads_mask = 1;
894#endif
895
William Lallemandb3f2be32018-09-11 10:06:18 +0200896 jobs++; /* this is the "master" job, we want to take care of the
897 signals even if there is no listener so the poll loop don't
898 leave */
899
900 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200901 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200902}
William Lallemandcb11fd22017-06-01 17:38:52 +0200903
904/*
905 * Reexec the process in failure mode, instead of exiting
906 */
907void reexec_on_failure()
908{
909 if (!atexit_flag)
910 return;
911
912 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
913
Christopher Faulet767a84b2017-11-24 16:50:31 +0100914 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200915 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200916}
William Lallemand73b85e72017-06-01 17:38:51 +0200917
918
919/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200920 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
921 * a signal zero to all subscribers. This means that it's as easy as
922 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200923 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100924static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200925{
926 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200927 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100928 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200929}
930
931/*
932 * upon SIGTTOU, we pause everything
933 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100934static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200935{
936 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100937 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200938}
939
940/*
941 * upon SIGTTIN, let's have a soft stop.
942 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100943static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200944{
Willy Tarreaube58c382011-07-24 18:28:10 +0200945 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200946}
947
948/*
949 * this function dumps every server's state when the process receives SIGHUP.
950 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100951static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200952{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100953 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200954
Christopher Faulet767a84b2017-11-24 16:50:31 +0100955 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200956 while (p) {
957 struct server *s = p->srv;
958
959 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
960 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100961 chunk_printf(&trash,
962 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
963 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200964 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100965 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200966 ha_warning("%s\n", trash.area);
967 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200968 s = s->next;
969 }
970
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200971 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
972 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100973 chunk_printf(&trash,
974 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
975 p->id,
976 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 +0200977 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100978 chunk_printf(&trash,
979 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
980 p->id,
981 (p->srv_bck) ? "is running on backup servers" : "has no server available",
982 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 +0200983 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100984 chunk_printf(&trash,
985 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
986 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
987 p->id, p->srv_act, p->srv_bck,
988 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 +0200989 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200990 ha_warning("%s\n", trash.area);
991 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200992
993 p = p->next;
994 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200995}
996
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100997static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200998{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200999 /* dump memory usage then free everything possible */
1000 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001001 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001002}
1003
William Lallemande1340412017-12-28 16:09:36 +01001004/*
1005 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1006 * If <fd> < 0, it opens /dev/null and use it to dup
1007 *
1008 * In the case of chrooting, you have to open /dev/null before the chroot, and
1009 * pass the <fd> to this function
1010 */
1011static void stdio_quiet(int fd)
1012{
1013 if (fd < 0)
1014 fd = open("/dev/null", O_RDWR, 0);
1015
1016 if (fd > -1) {
1017 fclose(stdin);
1018 fclose(stdout);
1019 fclose(stderr);
1020
1021 dup2(fd, 0);
1022 dup2(fd, 1);
1023 dup2(fd, 2);
1024 if (fd > 2)
1025 close(fd);
1026 return;
1027 }
1028
1029 ha_alert("Cannot open /dev/null\n");
1030 exit(EXIT_FAILURE);
1031}
1032
1033
Joseph Herlant03420902018-11-15 10:41:50 -08001034/* This function checks if cfg_cfgfiles contains directories.
1035 * If it finds one, it adds all the files (and only files) it contains
1036 * in cfg_cfgfiles in place of the directory (and removes the directory).
1037 * It adds the files in lexical order.
1038 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001039 * It doesn't add files with name starting with '.'
1040 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001041static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001042{
1043 struct wordlist *wl, *wlb;
1044 char *err = NULL;
1045
1046 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1047 struct stat file_stat;
1048 struct dirent **dir_entries = NULL;
1049 int dir_entries_nb;
1050 int dir_entries_it;
1051
1052 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001053 ha_alert("Cannot open configuration file/directory %s : %s\n",
1054 wl->s,
1055 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001056 exit(1);
1057 }
1058
1059 if (!S_ISDIR(file_stat.st_mode))
1060 continue;
1061
1062 /* from this point wl->s is a directory */
1063
1064 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1065 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001066 ha_alert("Cannot open configuration directory %s : %s\n",
1067 wl->s,
1068 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001069 exit(1);
1070 }
1071
1072 /* for each element in the directory wl->s */
1073 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1074 struct dirent *dir_entry = dir_entries[dir_entries_it];
1075 char *filename = NULL;
1076 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1077
1078 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001079 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001080 */
1081 if (dir_entry->d_name[0] == '.' ||
1082 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1083 goto next_dir_entry;
1084
1085 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001086 ha_alert("Cannot load configuration files %s : out of memory.\n",
1087 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001088 exit(1);
1089 }
1090
1091 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001092 ha_alert("Cannot open configuration file %s : %s\n",
1093 wl->s,
1094 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001095 exit(1);
1096 }
1097
1098 /* don't add anything else than regular file in cfg_cfgfiles
1099 * this way we avoid loops
1100 */
1101 if (!S_ISREG(file_stat.st_mode))
1102 goto next_dir_entry;
1103
1104 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001105 ha_alert("Cannot load configuration files %s : %s\n",
1106 filename,
1107 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001108 exit(1);
1109 }
1110
1111next_dir_entry:
1112 free(filename);
1113 free(dir_entry);
1114 }
1115
1116 free(dir_entries);
1117
1118 /* remove the current directory (wl) from cfg_cfgfiles */
1119 free(wl->s);
1120 LIST_DEL(&wl->list);
1121 free(wl);
1122 }
1123
1124 free(err);
1125}
1126
Willy Tarreaubaaee002006-06-26 02:48:02 +02001127/*
William Lallemand73b85e72017-06-01 17:38:51 +02001128 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001129 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001130 * Return an allocated copy of argv
1131 */
1132
1133static char **copy_argv(int argc, char **argv)
1134{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001135 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001136
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02001137 newargv = calloc(argc + 2, sizeof(*newargv));
William Lallemand73b85e72017-06-01 17:38:51 +02001138 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001139 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001140 return NULL;
1141 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001142 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001143
William Lallemanddf6c5a82020-06-04 17:40:23 +02001144 /* first copy argv[0] */
1145 *newargv++ = *argv++;
1146 argc--;
1147
1148 while (argc > 0) {
1149 if (**argv != '-') {
1150 /* non options are copied but will fail in the argument parser */
1151 *newargv++ = *argv++;
1152 argc--;
1153
1154 } else {
1155 char *flag;
1156
1157 flag = *argv + 1;
1158
1159 if (flag[0] == '-' && flag[1] == 0) {
1160 /* "--\0" copy every arguments till the end of argv */
1161 *newargv++ = *argv++;
1162 argc--;
1163
1164 while (argc > 0) {
1165 *newargv++ = *argv++;
1166 argc--;
1167 }
1168 } else {
1169 switch (*flag) {
1170 case 's':
1171 /* -sf / -st and their parameters are ignored */
1172 if (flag[1] == 'f' || flag[1] == 't') {
1173 argc--;
1174 argv++;
1175 /* The list can't contain a negative value since the only
1176 way to know the end of this list is by looking for the
1177 next option or the end of the options */
1178 while (argc > 0 && argv[0][0] != '-') {
1179 argc--;
1180 argv++;
1181 }
William Lallemand398da622020-09-02 16:12:23 +02001182 } else {
1183 argc--;
1184 argv++;
1185
William Lallemanddf6c5a82020-06-04 17:40:23 +02001186 }
1187 break;
1188
1189 case 'x':
1190 /* this option and its parameter are ignored */
1191 argc--;
1192 argv++;
1193 if (argc > 0) {
1194 argc--;
1195 argv++;
1196 }
1197 break;
1198
1199 case 'C':
1200 case 'n':
1201 case 'm':
1202 case 'N':
1203 case 'L':
1204 case 'f':
1205 case 'p':
1206 case 'S':
1207 /* these options have only 1 parameter which must be copied and can start with a '-' */
1208 *newargv++ = *argv++;
1209 argc--;
1210 if (argc == 0)
1211 goto error;
1212 *newargv++ = *argv++;
1213 argc--;
1214 break;
1215 default:
1216 /* for other options just copy them without parameters, this is also done
1217 * for options like "--foo", but this will fail in the argument parser.
1218 * */
1219 *newargv++ = *argv++;
1220 argc--;
1221 break;
1222 }
William Lallemand73b85e72017-06-01 17:38:51 +02001223 }
1224 }
William Lallemand73b85e72017-06-01 17:38:51 +02001225 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001226
William Lallemanddf6c5a82020-06-04 17:40:23 +02001227 return retargv;
1228
1229error:
1230 free(retargv);
1231 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001232}
1233
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001234
1235/* Performs basic random seed initialization. The main issue with this is that
1236 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1237 * which means that there will only be 4 billion possible random sequences once
1238 * srandom() is called, regardless of the internal state. Not calling it is
1239 * even worse as we'll always produce the same randoms sequences. What we do
1240 * here is to create an initial sequence from various entropy sources, hash it
1241 * using SHA1 and keep the resulting 160 bits available globally.
1242 *
1243 * We initialize the current process with the first 32 bits before starting the
1244 * polling loop, where all this will be changed to have process specific and
1245 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001246 *
1247 * Before starting threads, it's still possible to call random() as srandom()
1248 * is initialized from this, but after threads and/or processes are started,
1249 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001250 */
1251static void ha_random_boot(char *const *argv)
1252{
1253 unsigned char message[256];
1254 unsigned char *m = message;
1255 struct timeval tv;
1256 blk_SHA_CTX ctx;
1257 unsigned long l;
1258 int fd;
1259 int i;
1260
1261 /* start with current time as pseudo-random seed */
1262 gettimeofday(&tv, NULL);
1263 write_u32(m, tv.tv_sec); m += 4;
1264 write_u32(m, tv.tv_usec); m += 4;
1265
1266 /* PID and PPID add some OS-based randomness */
1267 write_u16(m, getpid()); m += 2;
1268 write_u16(m, getppid()); m += 2;
1269
1270 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1271 fd = open("/dev/urandom", O_RDONLY);
1272 if (fd >= 0) {
1273 i = read(fd, m, 20);
1274 if (i > 0)
1275 m += i;
1276 close(fd);
1277 }
1278
1279 /* take up to 160 bits bytes from openssl (non-blocking) */
1280#ifdef USE_OPENSSL
1281 if (RAND_bytes(m, 20) == 1)
1282 m += 20;
1283#endif
1284
1285 /* take 160 bits from existing random in case it was already initialized */
1286 for (i = 0; i < 5; i++) {
1287 write_u32(m, random());
1288 m += 4;
1289 }
1290
1291 /* stack address (benefit form operating system's ASLR) */
1292 l = (unsigned long)&m;
1293 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1294
1295 /* argv address (benefit form operating system's ASLR) */
1296 l = (unsigned long)&argv;
1297 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1298
1299 /* use tv_usec again after all the operations above */
1300 gettimeofday(&tv, NULL);
1301 write_u32(m, tv.tv_usec); m += 4;
1302
1303 /*
1304 * At this point, ~84-92 bytes have been used
1305 */
1306
1307 /* finish with the hostname */
1308 strncpy((char *)m, hostname, message + sizeof(message) - m);
1309 m += strlen(hostname);
1310
1311 /* total message length */
1312 l = m - message;
1313
1314 memset(&ctx, 0, sizeof(ctx));
1315 blk_SHA1_Init(&ctx);
1316 blk_SHA1_Update(&ctx, message, l);
1317 blk_SHA1_Final(boot_seed, &ctx);
1318
1319 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001320 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001321}
1322
Willy Tarreau5a023f02019-03-01 14:19:31 +01001323/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1324 * setting, and returns it. It may return -1 meaning "unlimited" if some
1325 * unlimited proxies have been found and the global.maxconn value is not yet
1326 * set. It may also return a value greater than maxconn if it's not yet set.
1327 * Note that a value of zero means there is no need for pipes. -1 is never
1328 * returned if global.maxconn is valid.
1329 */
1330static int compute_ideal_maxpipes()
1331{
1332 struct proxy *cur;
1333 int nbfe = 0, nbbe = 0;
1334 int unlimited = 0;
1335 int pipes;
1336 int max;
1337
1338 for (cur = proxies_list; cur; cur = cur->next) {
1339 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1340 if (cur->cap & PR_CAP_FE) {
1341 max = cur->maxconn;
1342 nbfe += max;
1343 if (!max) {
1344 unlimited = 1;
1345 break;
1346 }
1347 }
1348 if (cur->cap & PR_CAP_BE) {
1349 max = cur->fullconn ? cur->fullconn : global.maxconn;
1350 nbbe += max;
1351 if (!max) {
1352 unlimited = 1;
1353 break;
1354 }
1355 }
1356 }
1357 }
1358
1359 pipes = MAX(nbfe, nbbe);
1360 if (global.maxconn) {
1361 if (pipes > global.maxconn || unlimited)
1362 pipes = global.maxconn;
1363 } else if (unlimited) {
1364 pipes = -1;
1365 }
1366
1367 return pipes >= 4 ? pipes / 4 : pipes;
1368}
1369
Willy Tarreauac350932019-03-01 15:43:14 +01001370/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1371 * rlimits and computes an ideal maxconn. It's meant to be called only when
1372 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001373 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1374 * default 100) is returned as it is expected that it will even run on tight
1375 * environments, and will maintain compatibility with previous packages that
1376 * used to rely on this value as the default one. The system will emit a
1377 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001378 */
1379static int compute_ideal_maxconn()
1380{
1381 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1382 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1383 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001384 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001385 int maxconn;
1386
1387 /* we have to take into account these elements :
1388 * - number of engine_fds, which inflates the number of FD needed per
1389 * connection by this number.
1390 * - number of pipes per connection on average : for the unlimited
1391 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1392 * fixed value of 2*pipes.
1393 * - two FDs per connection
1394 */
1395
1396 /* subtract listeners and checks */
1397 remain -= global.maxsock;
1398
Willy Tarreau3f200852019-03-14 19:13:17 +01001399 /* one epoll_fd/kqueue_fd per thread */
1400 remain -= global.nbthread;
1401
1402 /* one wake-up pipe (2 fd) per thread */
1403 remain -= 2 * global.nbthread;
1404
Willy Tarreauac350932019-03-01 15:43:14 +01001405 /* Fixed pipes values : we only subtract them if they're not larger
1406 * than the remaining FDs because pipes are optional.
1407 */
1408 if (pipes >= 0 && pipes * 2 < remain)
1409 remain -= pipes * 2;
1410
1411 if (pipes < 0) {
1412 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1413 * = maxconn * (2 + 0.5 + engine_fds)
1414 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1415 */
1416 maxconn = 2 * remain / (5 + 2 * engine_fds);
1417 } else {
1418 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1419 * = maxconn * (2 + engine_fds)
1420 */
1421 maxconn = remain / (2 + engine_fds);
1422 }
1423
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001424 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001425}
1426
Willy Tarreaua409f302020-03-10 17:08:53 +01001427/* computes the estimated maxsock value for the given maxconn based on the
1428 * possibly set global.maxpipes and existing partial global.maxsock. It may
1429 * temporarily change global.maxconn for the time needed to propagate the
1430 * computations, and will reset it.
1431 */
1432static int compute_ideal_maxsock(int maxconn)
1433{
1434 int maxpipes = global.maxpipes;
1435 int maxsock = global.maxsock;
1436
1437
1438 if (!maxpipes) {
1439 int old_maxconn = global.maxconn;
1440
1441 global.maxconn = maxconn;
1442 maxpipes = compute_ideal_maxpipes();
1443 global.maxconn = old_maxconn;
1444 }
1445
1446 maxsock += maxconn * 2; /* each connection needs two sockets */
1447 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1448 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1449 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1450
1451 /* compute fd used by async engines */
1452 if (global.ssl_used_async_engines) {
1453 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1454
1455 maxsock += maxconn * sides * global.ssl_used_async_engines;
1456 }
1457 return maxsock;
1458}
1459
Willy Tarreau304e17e2020-03-10 17:54:54 +01001460/* Tests if it is possible to set the current process' RLIMIT_NOFILE to
1461 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1462 * value is accepted, non-zero otherwise. This is used to determine if an
1463 * automatic limit may be applied or not. When it is not, the caller knows that
1464 * the highest we can do is the rlim_max at boot. In case of error, we return
1465 * that the setting is possible, so that we defer the error processing to the
1466 * final stage in charge of enforcing this.
1467 */
1468static int check_if_maxsock_permitted(int maxsock)
1469{
1470 struct rlimit orig_limit, test_limit;
1471 int ret;
1472
1473 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1474 return 1;
1475
1476 /* don't go further if we can't even set to what we have */
1477 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1478 return 1;
1479
1480 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1481 test_limit.rlim_cur = test_limit.rlim_max;
1482 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1483
1484 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1485 return 1;
1486
1487 return ret == 0;
1488}
1489
1490
William Lallemand73b85e72017-06-01 17:38:51 +02001491/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001492 * This function initializes all the necessary variables. It only returns
1493 * if everything is OK. If something fails, it exits.
1494 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001495static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001496{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001497 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001498 char *tmp;
1499 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001500 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001501 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001502 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001503 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001504 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001505 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001506 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001507 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001508
Christopher Faulete3a5e352017-10-24 13:53:54 +02001509 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001510 old_argv = copy_argv(argc, argv);
1511 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001512 ha_alert("failed to copy argv.\n");
1513 exit(1);
1514 }
William Lallemand73b85e72017-06-01 17:38:51 +02001515
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001516 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001517 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001518 exit(1);
1519 }
David du Colombier7af46052012-05-16 14:16:48 +02001520
Emeric Brun2b920a12010-09-23 18:30:22 +02001521 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1522 * the string in case of truncation, and at least FreeBSD appears not to do
1523 * it.
1524 */
1525 memset(hostname, 0, sizeof(hostname));
1526 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001527
1528 if ((localpeer = strdup(hostname)) == NULL) {
1529 ha_alert("Cannot allocate memory for local peer.\n");
1530 exit(EXIT_FAILURE);
1531 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001532 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001533
William Lallemand24c928c2020-01-14 17:58:18 +01001534 /* we were in mworker mode, we should restart in mworker mode */
1535 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1536 global.mode |= MODE_MWORKER;
1537
Willy Tarreaubaaee002006-06-26 02:48:02 +02001538 /*
1539 * Initialize the previously static variables.
1540 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001541
Willy Tarreau173d9952018-01-26 21:48:23 +01001542 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001543 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001544
Willy Tarreaubaaee002006-06-26 02:48:02 +02001545
1546#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001547 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001548#endif
1549
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001550 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001551 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001552 start_date = now;
1553
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001554 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001555
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001556 if (init_acl() != 0)
1557 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001558
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001559 /* Initialise lua. */
1560 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001561
Christopher Fauletff2613e2016-11-09 11:36:17 +01001562 /* Initialize process vars */
1563 vars_init(&global.vars, SCOPE_PROC);
1564
Willy Tarreau43b78992009-01-25 15:42:27 +01001565 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001566#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001567 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001568#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001569#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001570 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001571#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001572#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001573 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001574#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001575#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001576 global.tune.options |= GTUNE_USE_EVPORTS;
1577#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001578#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001579 global.tune.options |= GTUNE_USE_SPLICE;
1580#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001581#if defined(USE_GETADDRINFO)
1582 global.tune.options |= GTUNE_USE_GAI;
1583#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001584#if defined(SO_REUSEPORT)
1585 global.tune.options |= GTUNE_USE_REUSEPORT;
1586#endif
Willy Tarreau76cc6992020-07-01 18:49:24 +02001587#ifdef USE_THREAD
1588 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
1589#endif
William Dauchya5194602020-03-28 19:29:58 +01001590 global.tune.options |= GTUNE_STRICT_LIMITS;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001591
1592 pid = getpid();
1593 progname = *argv;
1594 while ((tmp = strchr(progname, '/')) != NULL)
1595 progname = tmp + 1;
1596
Kevinm48936af2010-12-22 16:08:21 +00001597 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001598 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001599
Willy Tarreaubaaee002006-06-26 02:48:02 +02001600 argc--; argv++;
1601 while (argc > 0) {
1602 char *flag;
1603
1604 if (**argv == '-') {
1605 flag = *argv+1;
1606
1607 /* 1 arg */
1608 if (*flag == 'v') {
1609 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001610 if (flag[1] == 'v') /* -vv */
1611 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001612 exit(0);
1613 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001614#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001615 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001616 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001617#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001618#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001619 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001620 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001621#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001622#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001623 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001624 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001625#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001626#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001627 else if (*flag == 'd' && flag[1] == 'v')
1628 global.tune.options &= ~GTUNE_USE_EVPORTS;
1629#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001630#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001631 else if (*flag == 'd' && flag[1] == 'S')
1632 global.tune.options &= ~GTUNE_USE_SPLICE;
1633#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001634#if defined(USE_GETADDRINFO)
1635 else if (*flag == 'd' && flag[1] == 'G')
1636 global.tune.options &= ~GTUNE_USE_GAI;
1637#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001638#if defined(SO_REUSEPORT)
1639 else if (*flag == 'd' && flag[1] == 'R')
1640 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1641#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001642 else if (*flag == 'd' && flag[1] == 'V')
1643 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001644 else if (*flag == 'V')
1645 arg_mode |= MODE_VERBOSE;
1646 else if (*flag == 'd' && flag[1] == 'b')
1647 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001648 else if (*flag == 'd' && flag[1] == 'W')
1649 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001650 else if (*flag == 'd' && flag[1] == 'M')
1651 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001652 else if (*flag == 'd' && flag[1] == 'r')
1653 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001654 else if (*flag == 'd')
1655 arg_mode |= MODE_DEBUG;
1656 else if (*flag == 'c')
1657 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001658 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001659 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001660 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001661 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001662#if defined(USE_SYSTEMD)
1663 global.tune.options |= GTUNE_USE_SYSTEMD;
1664#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001665 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 +01001666 usage(progname);
1667#endif
1668 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001669 else if (*flag == 'W')
1670 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001671 else if (*flag == 'q')
1672 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001673 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001674 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001675 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001676 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001677 }
William Lallemand4fc09692017-06-19 16:37:19 +02001678 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001679 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001680 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001681
Olivier Houchardf73629d2017-04-05 22:33:04 +02001682 argv++;
1683 argc--;
1684 }
William Lallemande7361152018-10-26 14:47:36 +02001685 else if (*flag == 'S') {
1686 struct wordlist *c;
1687
William Lallemanda6b32492020-06-04 23:49:20 +02001688 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001689 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1690 usage(progname);
1691 }
1692 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1693 ha_alert("Cannot allocate memory\n");
1694 exit(EXIT_FAILURE);
1695 }
1696 LIST_ADD(&mworker_cli_conf, &c->list);
1697
1698 argv++;
1699 argc--;
1700 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001701 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1702 /* list of pids to finish ('f') or terminate ('t') */
1703
1704 if (flag[1] == 'f')
1705 oldpids_sig = SIGUSR1; /* finish then exit */
1706 else
1707 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001708 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001709 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001710 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1711 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001712 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001713 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001714 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001715 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001716 errno = 0;
1717 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1718 if (errno) {
1719 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1720 flag,
1721 *argv, strerror(errno));
1722 exit(1);
1723 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001724 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001725 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001726 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1727 flag, endptr);
1728 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001729 }
Chris Lane236062f2018-02-05 23:15:44 +00001730 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001731 if (oldpids[nb_oldpids] <= 0)
1732 usage(progname);
1733 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001734 }
1735 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001736 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1737 /* now that's a cfgfile list */
1738 argv++; argc--;
1739 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001740 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001741 ha_alert("Cannot load configuration file/directory %s : %s\n",
1742 *argv,
1743 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001744 exit(1);
1745 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001746 argv++; argc--;
1747 }
1748 break;
1749 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001750 else { /* >=2 args */
1751 argv++; argc--;
1752 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001753 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001754
1755 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001756 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001757 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001758 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001759 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001760 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001761 free(localpeer);
1762 if ((localpeer = strdup(*argv)) == NULL) {
1763 ha_alert("Cannot allocate memory for local peer.\n");
1764 exit(EXIT_FAILURE);
1765 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001766 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001767 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001768 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001769 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001770 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001771 ha_alert("Cannot load configuration file/directory %s : %s\n",
1772 *argv,
1773 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001774 exit(1);
1775 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001776 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001777 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001778 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001779 }
1780 }
1781 }
1782 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001783 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001784 argv++; argc--;
1785 }
1786
Christopher Faulete3a5e352017-10-24 13:53:54 +02001787 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001788 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001789
William Lallemand944e6192018-11-21 15:48:31 +01001790 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001791 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001792 global.mode |= MODE_MWORKER_WAIT;
1793 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001794 }
1795
1796 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1797 atexit_flag = 1;
1798 atexit(reexec_on_failure);
1799 }
1800
Willy Tarreau576132e2011-09-10 19:26:56 +02001801 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001802 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001803 exit(1);
1804 }
1805
Willy Tarreaubaaee002006-06-26 02:48:02 +02001806 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001807
1808 init_default_instance();
1809
William Lallemand944e6192018-11-21 15:48:31 +01001810 /* in wait mode, we don't try to read the configuration files */
1811 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001812 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001813
William Lallemand944e6192018-11-21 15:48:31 +01001814 /* handle cfgfiles that are actually directories */
1815 cfgfiles_expand_directories();
1816
1817 if (LIST_ISEMPTY(&cfg_cfgfiles))
1818 usage(progname);
1819
1820
1821 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1822 int ret;
1823
William Lallemand7b302d82019-05-20 11:15:37 +02001824 if (trash->data)
1825 chunk_appendf(trash, ";");
1826
1827 chunk_appendf(trash, "%s", wl->s);
1828
William Lallemand944e6192018-11-21 15:48:31 +01001829 ret = readcfgfile(wl->s);
1830 if (ret == -1) {
1831 ha_alert("Could not open configuration file %s : %s\n",
1832 wl->s, strerror(errno));
1833 exit(1);
1834 }
1835 if (ret & (ERR_ABORT|ERR_FATAL))
1836 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1837 err_code |= ret;
1838 if (err_code & ERR_ABORT)
1839 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001840 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001841
William Lallemand944e6192018-11-21 15:48:31 +01001842 /* do not try to resolve arguments nor to spot inconsistencies when
1843 * the configuration contains fatal errors caused by files not found
1844 * or failed memory allocations.
1845 */
1846 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1847 ha_alert("Fatal errors found in configuration.\n");
1848 exit(1);
1849 }
William Lallemand7b302d82019-05-20 11:15:37 +02001850 if (trash->data)
1851 setenv("HAPROXY_CFGFILES", trash->area, 1);
1852
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001853 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001854 if (global.mode & MODE_MWORKER) {
1855 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001856 struct mworker_proc *tmproc;
1857
William Lallemand482f9a92019-04-12 16:15:00 +02001858 setenv("HAPROXY_MWORKER", "1", 1);
1859
William Lallemand16dd1b32018-11-19 18:46:18 +01001860 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1861
William Lallemandf3a86832019-04-01 11:29:58 +02001862 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001863 if (!tmproc) {
1864 ha_alert("Cannot allocate process structures.\n");
1865 exit(EXIT_FAILURE);
1866 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001867 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001868 tmproc->reloads = 0;
1869 tmproc->relative_pid = 0;
1870 tmproc->pid = pid;
1871 tmproc->timestamp = start_date.tv_sec;
1872 tmproc->ipc_fd[0] = -1;
1873 tmproc->ipc_fd[1] = -1;
1874
1875 proc_self = tmproc;
1876
1877 LIST_ADDQ(&proc_list, &tmproc->list);
1878 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001879
1880 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001881
William Lallemandf3a86832019-04-01 11:29:58 +02001882 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001883 if (!tmproc) {
1884 ha_alert("Cannot allocate process structures.\n");
1885 exit(EXIT_FAILURE);
1886 }
1887
William Lallemand8f7069a2019-04-12 16:09:23 +02001888 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001889 tmproc->pid = -1;
1890 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001891 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001892 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001893 tmproc->ipc_fd[0] = -1;
1894 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001895
1896 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1897 exit(EXIT_FAILURE);
1898 }
1899
1900 LIST_ADDQ(&proc_list, &tmproc->list);
1901 }
William Lallemand944e6192018-11-21 15:48:31 +01001902 }
1903 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1904 struct wordlist *it, *c;
1905
William Lallemand1b663612018-10-26 14:47:33 +02001906 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001907
William Lallemande7361152018-10-26 14:47:36 +02001908
William Lallemand550db6d2018-11-06 17:37:12 +01001909 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001910
William Lallemand550db6d2018-11-06 17:37:12 +01001911 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001912 ha_alert("Can't create the master's CLI.\n");
1913 exit(EXIT_FAILURE);
1914 }
William Lallemande7361152018-10-26 14:47:36 +02001915
William Lallemand550db6d2018-11-06 17:37:12 +01001916 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1917
1918 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1919 ha_alert("Can't create the master's CLI.\n");
1920 exit(EXIT_FAILURE);
1921 }
1922 LIST_DEL(&c->list);
1923 free(c->s);
1924 free(c);
1925 }
1926 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001927 }
1928
Willy Tarreaubb925012009-07-23 13:36:36 +02001929 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001930 for (px = proxies_list; px; px = px->next) {
1931 struct server *srv;
1932 struct post_proxy_check_fct *ppcf;
1933 struct post_server_check_fct *pscf;
1934
1935 list_for_each_entry(pscf, &post_server_check_list, list) {
1936 for (srv = px->srv; srv; srv = srv->next)
1937 err_code |= pscf->fct(srv);
1938 }
1939 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1940 err_code |= ppcf->fct(px);
1941 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001942 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001943 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001944 exit(1);
1945 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001946
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01001947 err_code |= pattern_finalize_config();
1948 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1949 ha_alert("Failed to finalize pattern config.\n");
1950 exit(1);
1951 }
Willy Tarreau0f936722019-04-11 14:47:08 +02001952
Willy Tarreau70060452015-12-14 12:46:07 +01001953 /* recompute the amount of per-process memory depending on nbproc and
1954 * the shared SSL cache size (allowed to exist in all processes).
1955 */
1956 if (global.rlimit_memmax_all) {
1957#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1958 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1959
1960 global.rlimit_memmax =
1961 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1962 ssl_cache_bytes) / global.nbproc +
1963 ssl_cache_bytes + 1048575LL) / 1048576LL;
1964#else
1965 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1966#endif
1967 }
1968
Willy Tarreaue5733232019-05-22 19:24:06 +02001969#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001970 err_code |= netns_init();
1971 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001972 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001973 exit(1);
1974 }
1975#endif
1976
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001977 /* Apply server states */
1978 apply_server_state();
1979
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001980 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001981 srv_compute_all_admin_states(px);
1982
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001983 /* Apply servers' configured address */
1984 err_code |= srv_init_addr();
1985 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001986 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001987 exit(1);
1988 }
1989
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001990 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
1991 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
1992 exit(1);
1993 }
1994
Willy Tarreaubaaee002006-06-26 02:48:02 +02001995 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001996 struct peers *pr;
1997 struct proxy *px;
1998
Willy Tarreaubebd2122020-04-15 16:06:11 +02001999 if (warned & WARN_ANY)
2000 qfprintf(stdout, "Warnings were found.\n");
2001
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002002 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002003 if (pr->peers_fe)
2004 break;
2005
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002006 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02002007 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002008 break;
2009
2010 if (pr || px) {
2011 /* At least one peer or one listener has been found */
2012 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02002013 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002014 }
2015 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2016 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002017 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002018
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002019 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002020 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002021
Willy Tarreaue6945732016-12-21 19:57:00 +01002022 list_for_each_entry(pcf, &post_check_list, list) {
2023 err_code |= pcf->fct();
2024 if (err_code & (ERR_ABORT|ERR_FATAL))
2025 exit(1);
2026 }
2027
Willy Tarreaubaaee002006-06-26 02:48:02 +02002028 if (cfg_maxconn > 0)
2029 global.maxconn = cfg_maxconn;
2030
Willy Tarreau8d687d82019-03-01 09:39:42 +01002031 if (global.stats_fe)
2032 global.maxsock += global.stats_fe->maxconn;
2033
2034 if (cfg_peers) {
2035 /* peers also need to bypass global maxconn */
2036 struct peers *p = cfg_peers;
2037
2038 for (p = cfg_peers; p; p = p->next)
2039 if (p->peers_fe)
2040 global.maxsock += p->peers_fe->maxconn;
2041 }
2042
Willy Tarreaubaaee002006-06-26 02:48:02 +02002043 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002044 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002045 global.pidfile = strdup(cfg_pidfile);
2046 }
2047
Willy Tarreaud0256482015-01-15 21:45:22 +01002048 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002049 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2050 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2051 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2052 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002053 *
2054 * If memmax is set, then it depends on which values are set. If
2055 * maxsslconn is set, we use memmax to determine how many cleartext
2056 * connections may be added, and set maxconn to the sum of the two.
2057 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2058 * the remaining amount of memory between memmax and the cleartext
2059 * connections. If neither are set, then it is considered that all
2060 * connections are SSL-capable, and maxconn is computed based on this,
2061 * then maxsslconn accordingly. We need to know if SSL is used on the
2062 * frontends, backends, or both, because when it's used on both sides,
2063 * we need twice the value for maxsslconn, but we only count the
2064 * handshake once since it is not performed on the two sides at the
2065 * same time (frontend-side is terminated before backend-side begins).
2066 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002067 * ssl_handshake_cost during its initialization. In any case, if
2068 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2069 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002070 */
Willy Tarreauac350932019-03-01 15:43:14 +01002071 ideal_maxconn = compute_ideal_maxconn();
2072
Willy Tarreaud0256482015-01-15 21:45:22 +01002073 if (!global.rlimit_memmax) {
2074 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002075 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002076 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2077 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2078 }
2079 }
2080#ifdef USE_OPENSSL
2081 else if (!global.maxconn && !global.maxsslconn &&
2082 (global.ssl_used_frontend || global.ssl_used_backend)) {
2083 /* memmax is set, compute everything automatically. Here we want
2084 * to ensure that all SSL connections will be served. We take
2085 * care of the number of sides where SSL is used, and consider
2086 * the worst case : SSL used on both sides and doing a handshake
2087 * simultaneously. Note that we can't have more than maxconn
2088 * handshakes at a time by definition, so for the worst case of
2089 * two SSL conns per connection, we count a single handshake.
2090 */
2091 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2092 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002093 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002094
2095 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2096 mem -= global.maxzlibmem;
2097 mem = mem * MEM_USABLE_RATIO;
2098
Willy Tarreau304e17e2020-03-10 17:54:54 +01002099 /* Principle: we test once to set maxconn according to the free
2100 * memory. If it results in values the system rejects, we try a
2101 * second time by respecting rlim_fd_max. If it fails again, we
2102 * go back to the initial value and will let the final code
2103 * dealing with rlimit report the error. That's up to 3 attempts.
2104 */
2105 do {
2106 global.maxconn = mem /
2107 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2108 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2109 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002110
Willy Tarreau304e17e2020-03-10 17:54:54 +01002111 if (retried == 1)
2112 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2113 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002114#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002115 if (global.maxconn > SYSTEM_MAXCONN)
2116 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002117#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002118 global.maxsslconn = sides * global.maxconn;
2119
2120 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2121 break;
2122 } while (retried++ < 2);
2123
Willy Tarreaud0256482015-01-15 21:45:22 +01002124 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2125 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2126 global.maxconn, global.maxsslconn);
2127 }
2128 else if (!global.maxsslconn &&
2129 (global.ssl_used_frontend || global.ssl_used_backend)) {
2130 /* memmax and maxconn are known, compute maxsslconn automatically.
2131 * maxsslconn being forced, we don't know how many of it will be
2132 * on each side if both sides are being used. The worst case is
2133 * when all connections use only one SSL instance because
2134 * handshakes may be on two sides at the same time.
2135 */
2136 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2137 int64_t mem = global.rlimit_memmax * 1048576ULL;
2138 int64_t sslmem;
2139
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 Tarreau87b09662015-04-03 00:22:06 +02002144 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002145 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2146 global.maxsslconn = round_2dig(global.maxsslconn);
2147
2148 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002149 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2150 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2151 "without SSL is %d, but %d was found and SSL is in use.\n",
2152 global.rlimit_memmax,
2153 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2154 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002155 exit(1);
2156 }
2157
2158 if (global.maxsslconn > sides * global.maxconn)
2159 global.maxsslconn = sides * global.maxconn;
2160
2161 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2162 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2163 }
2164#endif
2165 else if (!global.maxconn) {
2166 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2167 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2168 int64_t mem = global.rlimit_memmax * 1048576ULL;
2169 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002170 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002171
2172 if (global.ssl_used_frontend || global.ssl_used_backend)
2173 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2174
2175 mem -= global.maxzlibmem;
2176 mem = mem * MEM_USABLE_RATIO;
2177
2178 clearmem = mem;
2179 if (sides)
2180 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2181
Willy Tarreau304e17e2020-03-10 17:54:54 +01002182 /* Principle: we test once to set maxconn according to the free
2183 * memory. If it results in values the system rejects, we try a
2184 * second time by respecting rlim_fd_max. If it fails again, we
2185 * go back to the initial value and will let the final code
2186 * dealing with rlimit report the error. That's up to 3 attempts.
2187 */
2188 do {
2189 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2190 if (retried == 1)
2191 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2192 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002193#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002194 if (global.maxconn > SYSTEM_MAXCONN)
2195 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002196#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002197
Willy Tarreau304e17e2020-03-10 17:54:54 +01002198 if (clearmem <= 0 || !global.maxconn) {
2199 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2200 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2201 "is %d, but %d was found.\n",
2202 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002203 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002204 global.maxsslconn);
2205 exit(1);
2206 }
2207
2208 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2209 break;
2210 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002211
2212 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2213 if (sides && global.maxsslconn > sides * global.maxconn) {
2214 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2215 "to be limited to %d. Better reduce global.maxsslconn to get more "
2216 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2217 }
2218 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2219 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002220 }
2221
Willy Tarreaua409f302020-03-10 17:08:53 +01002222 global.maxsock = compute_ideal_maxsock(global.maxconn);
2223 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002224 if (!global.maxpipes)
2225 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002226
Olivier Houchard88698d92019-04-16 19:07:22 +02002227 /* update connection pool thresholds */
2228 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2229 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2230
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002231 proxy_adjust_all_maxconn();
2232
Willy Tarreau1db37712007-06-03 17:16:49 +02002233 if (global.tune.maxpollevents <= 0)
2234 global.tune.maxpollevents = MAX_POLL_EVENTS;
2235
Olivier Houchard1599b802018-05-24 18:59:04 +02002236 if (global.tune.runqueue_depth <= 0)
2237 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2238
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002239 if (global.tune.recv_enough == 0)
2240 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2241
Willy Tarreau27a674e2009-08-17 07:23:33 +02002242 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2243 global.tune.maxrewrite = global.tune.bufsize / 2;
2244
Willy Tarreaubaaee002006-06-26 02:48:02 +02002245 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2246 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002247 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002248 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2249 }
2250
William Lallemand095ba4c2017-06-01 17:38:50 +02002251 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002252 /* command line daemon mode inhibits foreground and debug modes mode */
2253 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002254 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002255 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002256
2257 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002258
William Lallemand095ba4c2017-06-01 17:38:50 +02002259 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002260 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002261 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002262 }
2263
William Lallemand095ba4c2017-06-01 17:38:50 +02002264 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002265 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002266 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 +02002267 global.nbproc = 1;
2268 }
2269
2270 if (global.nbproc < 1)
2271 global.nbproc = 1;
2272
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002273 if (global.nbthread < 1)
2274 global.nbthread = 1;
2275
Christopher Faulet3ef26392017-08-29 16:46:57 +02002276 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002277 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002278 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002279 exit(1);
2280 }
2281
Christopher Faulet96d44832017-11-14 22:02:30 +01002282 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002283 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002284 exit(1);
2285 }
2286
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002287 /*
2288 * Note: we could register external pollers here.
2289 * Built-in pollers have been registered before main().
2290 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002291
Willy Tarreau43b78992009-01-25 15:42:27 +01002292 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002293 disable_poller("kqueue");
2294
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002295 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2296 disable_poller("evports");
2297
Willy Tarreau43b78992009-01-25 15:42:27 +01002298 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002299 disable_poller("epoll");
2300
Willy Tarreau43b78992009-01-25 15:42:27 +01002301 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002302 disable_poller("poll");
2303
Willy Tarreau43b78992009-01-25 15:42:27 +01002304 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002305 disable_poller("select");
2306
2307 /* Note: we could disable any poller by name here */
2308
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002309 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002310 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002311 fprintf(stderr, "\n");
2312 list_filters(stderr);
2313 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002314
Willy Tarreau4f60f162007-04-08 16:39:58 +02002315 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002316 ha_alert("No polling mechanism available.\n"
2317 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2318 " is too low on this platform to support maxconn and the number of listeners\n"
2319 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2320 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2321 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2322 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2323 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2324 " check build settings using 'haproxy -vv'.\n\n",
2325 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002326 exit(1);
2327 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002328 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2329 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002330 }
2331
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002332 if (!global.node)
2333 global.node = strdup(hostname);
2334
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002335 if (!hlua_post_init())
2336 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002337
Maxime de Roucy0f503922016-05-13 23:52:55 +02002338 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002339}
2340
Simon Horman6fb82592011-07-15 13:14:11 +09002341static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002342{
Simon Hormanac821422011-07-15 13:14:09 +09002343 struct acl_term_suite *suite, *suiteb;
2344 struct acl_term *term, *termb;
2345
Simon Horman6fb82592011-07-15 13:14:11 +09002346 if (!cond)
2347 return;
2348
2349 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2350 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2351 LIST_DEL(&term->list);
2352 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002353 }
Simon Horman6fb82592011-07-15 13:14:11 +09002354 LIST_DEL(&suite->list);
2355 free(suite);
2356 }
2357
2358 free(cond);
2359}
2360
Christopher Fauletcb550132019-12-17 11:25:46 +01002361static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002362{
Christopher Fauletcb550132019-12-17 11:25:46 +01002363 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002364
Christopher Fauletcb550132019-12-17 11:25:46 +01002365 list_for_each_entry_safe(rule, ruleb, rules, list) {
2366 LIST_DEL(&rule->list);
2367 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002368 if (rule->release_ptr)
2369 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002370 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002371 }
2372}
2373
Simon Horman6fb82592011-07-15 13:14:11 +09002374static void deinit_stick_rules(struct list *rules)
2375{
2376 struct sticking_rule *rule, *ruleb;
2377
2378 list_for_each_entry_safe(rule, ruleb, rules, list) {
2379 LIST_DEL(&rule->list);
2380 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002381 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002382 free(rule);
2383 }
2384}
2385
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002386void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002387{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002388 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002389 struct cap_hdr *h,*h_next;
2390 struct server *s,*s_next;
2391 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002392 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002393 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002394 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002395 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002396 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002397 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002398 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002399 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002400 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002401 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002402 struct build_opts_str *bol, *bolb;
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002403 struct post_deinit_fct *pdf, *pdfb;
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002404 struct proxy_deinit_fct *pxdf, *pxdfb;
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002405 struct server_deinit_fct *srvdf, *srvdfb;
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002406 struct per_thread_init_fct *tif, *tifb;
2407 struct per_thread_deinit_fct *tdf, *tdfb;
2408 struct per_thread_alloc_fct *taf, *tafb;
2409 struct per_thread_free_fct *tff, *tffb;
Tim Duesterhus34bef072020-07-04 11:49:50 +02002410 struct post_server_check_fct *pscf, *pscfb;
Tim Duesterhusfc854942020-09-10 19:46:42 +02002411 struct post_check_fct *pcf, *pcfb;
Tim Duesterhus53508d62020-09-10 19:46:40 +02002412 struct post_proxy_check_fct *ppcf, *ppcfb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002413
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002414 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002415 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002416 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002417 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002418 free(p->cookie_name);
2419 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002420 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002421 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002422 free(p->capture_name);
2423 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002424 free(p->rdp_cookie_name);
William Lallemandefc5a9d2020-08-07 14:48:37 +02002425 free(p->invalid_rep);
2426 free(p->invalid_req);
Willy Tarreau62a61232013-04-12 18:13:46 +02002427 if (p->conf.logformat_string != default_http_log_format &&
2428 p->conf.logformat_string != default_tcp_log_format &&
2429 p->conf.logformat_string != clf_http_log_format)
2430 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002431
Willy Tarreau62a61232013-04-12 18:13:46 +02002432 free(p->conf.lfs_file);
2433 free(p->conf.uniqueid_format_string);
Tim Duesterhus18c63592020-07-04 11:49:42 +02002434 istfree(&p->header_unique_id);
Willy Tarreau62a61232013-04-12 18:13:46 +02002435 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002436 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2437 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002438
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002439 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2440 free(p->conf.logformat_sd_string);
2441 free(p->conf.lfsd_file);
2442
Willy Tarreaub80c2302007-11-30 20:51:32 +01002443 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2444 LIST_DEL(&cond->list);
2445 prune_acl_cond(cond);
2446 free(cond);
2447 }
2448
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002449 /* build a list of unique uri_auths */
2450 if (!ua)
2451 ua = p->uri_auth;
2452 else {
2453 /* check if p->uri_auth is unique */
2454 for (uap = ua; uap; uap=uap->next)
2455 if (uap == p->uri_auth)
2456 break;
2457
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002458 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002459 /* add it, if it is */
2460 p->uri_auth->next = ua;
2461 ua = p->uri_auth;
2462 }
2463 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002464
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002465 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2466 LIST_DEL(&acl->list);
2467 prune_acl(acl);
2468 free(acl);
2469 }
2470
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002471 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2472 LIST_DEL(&srule->list);
2473 prune_acl_cond(srule->cond);
Tim Duesterhus826cf072020-07-04 11:49:44 +02002474 list_for_each_entry_safe(lf, lfb, &srule->expr, list) {
2475 LIST_DEL(&lf->list);
2476 release_sample_expr(lf->expr);
2477 free(lf->arg);
2478 free(lf);
2479 }
Tim Duesterhus6fb74a12020-07-04 11:49:43 +02002480 free(srule->file);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002481 free(srule->cond);
2482 free(srule);
2483 }
2484
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002485 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2486 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002487 if (rule->cond) {
2488 prune_acl_cond(rule->cond);
2489 free(rule->cond);
2490 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002491 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002492 free(rule);
2493 }
2494
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002495 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2496 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002497 if (rdr->cond) {
2498 prune_acl_cond(rdr->cond);
2499 free(rdr->cond);
2500 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002501 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002502 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2503 LIST_DEL(&lf->list);
2504 free(lf);
2505 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002506 free(rdr);
2507 }
2508
William Lallemand0f99e342011-10-12 17:50:54 +02002509 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2510 LIST_DEL(&log->list);
2511 free(log);
2512 }
2513
William Lallemand723b73a2012-02-08 16:37:49 +01002514 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2515 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002516 release_sample_expr(lf->expr);
2517 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002518 free(lf);
2519 }
2520
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002521 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2522 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002523 release_sample_expr(lf->expr);
2524 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002525 free(lf);
2526 }
2527
Tim Duesterhus79765782020-07-04 11:49:40 +02002528 list_for_each_entry_safe(lf, lfb, &p->format_unique_id, list) {
2529 LIST_DEL(&lf->list);
2530 release_sample_expr(lf->expr);
2531 free(lf->arg);
2532 free(lf);
2533 }
2534
Christopher Fauletcb550132019-12-17 11:25:46 +01002535 deinit_act_rules(&p->tcp_req.inspect_rules);
2536 deinit_act_rules(&p->tcp_rep.inspect_rules);
2537 deinit_act_rules(&p->tcp_req.l4_rules);
2538 deinit_act_rules(&p->tcp_req.l5_rules);
2539 deinit_act_rules(&p->http_req_rules);
2540 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002541 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002542
Simon Horman6fb82592011-07-15 13:14:11 +09002543 deinit_stick_rules(&p->storersp_rules);
2544 deinit_stick_rules(&p->sticking_rules);
2545
Willy Tarreaubaaee002006-06-26 02:48:02 +02002546 h = p->req_cap;
2547 while (h) {
2548 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002549 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002550 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002551 free(h);
2552 h = h_next;
2553 }/* end while(h) */
2554
2555 h = p->rsp_cap;
2556 while (h) {
2557 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002558 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002559 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002560 free(h);
2561 h = h_next;
2562 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002563
Willy Tarreaubaaee002006-06-26 02:48:02 +02002564 s = p->srv;
2565 while (s) {
2566 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002567
Dragan Dosen026ef572019-04-30 00:56:20 +02002568
Willy Tarreauf6562792019-05-07 19:05:35 +02002569 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002570
Willy Tarreaua534fea2008-08-03 12:19:50 +02002571 free(s->id);
2572 free(s->cookie);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002573 free(s->hostname);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002574 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002575 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002576 free(s->idle_conns);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002577 free(s->safe_conns);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002578 free(s->available_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002579 free(s->curr_idle_thr);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002580 free(s->resolvers_id);
Willy Tarreau17d45382016-12-22 21:16:08 +01002581
Christopher Fauletf61f33a2020-03-27 18:55:49 +01002582 if (s->use_ssl == 1 || s->check.use_ssl == 1 || (s->proxy->options & PR_O_TCPCHK_SSL)) {
Willy Tarreau17d45382016-12-22 21:16:08 +01002583 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2584 xprt_get(XPRT_SSL)->destroy_srv(s);
2585 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002586 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002587
2588 list_for_each_entry(srvdf, &server_deinit_list, list)
2589 srvdf->fct(s);
2590
Willy Tarreaubaaee002006-06-26 02:48:02 +02002591 free(s);
2592 s = s_next;
2593 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002594
Willy Tarreau4348fad2012-09-20 16:48:07 +02002595 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002596 /*
2597 * Zombie proxy, the listener just pretend to be up
2598 * because they still hold an opened fd.
2599 * Close it and give the listener its real state.
2600 */
2601 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
Willy Tarreau38ba6472020-08-27 08:16:52 +02002602 close(l->rx.fd);
Olivier Houchard1fc05162017-04-06 01:05:05 +02002603 l->state = LI_INIT;
2604 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002605 unbind_listener(l);
2606 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002607 LIST_DEL(&l->by_fe);
2608 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002609 free(l->name);
2610 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002611 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002612 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002613
Willy Tarreau4348fad2012-09-20 16:48:07 +02002614 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002615 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002616 if (bind_conf->xprt->destroy_bind_conf)
2617 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002618 free(bind_conf->file);
2619 free(bind_conf->arg);
2620 LIST_DEL(&bind_conf->by_fe);
2621 free(bind_conf);
2622 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002623
Christopher Fauletd7c91962015-04-30 11:48:27 +02002624 flt_deinit(p);
2625
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002626 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2627 pxdf->fct(p);
2628
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002629 free(p->desc);
2630 free(p->fwdfor_hdr_name);
2631
Olivier Houchard3f795f72019-04-17 22:51:06 +02002632 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002633
Willy Tarreaubafbe012017-11-24 17:34:44 +01002634 pool_destroy(p->req_cap_pool);
2635 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002636 if (p->table)
2637 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002638
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002639 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002640 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002641 HA_SPIN_DESTROY(&p0->lbprm.lock);
2642 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002643 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002644 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002645
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002646 while (ua) {
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002647 struct stat_scope *scope, *scopep;
2648
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002649 uap = ua;
2650 ua = ua->next;
2651
Willy Tarreaua534fea2008-08-03 12:19:50 +02002652 free(uap->uri_prefix);
2653 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002654 free(uap->node);
2655 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002656
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002657 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002658 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002659
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002660 scope = uap->scope;
2661 while (scope) {
2662 scopep = scope;
2663 scope = scope->next;
2664
2665 free(scopep->px_id);
2666 free(scopep);
2667 }
2668
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002669 free(uap);
2670 }
2671
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002672 userlist_free(userlist);
2673
David Carlier834cb2e2015-09-25 12:02:25 +01002674 cfg_unregister_sections();
2675
Christopher Faulet0132d062017-07-26 15:33:35 +02002676 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002677
Willy Tarreaudd815982007-10-16 12:25:14 +02002678 protocol_unbind_all();
2679
Willy Tarreau05554e62016-12-21 20:46:26 +01002680 list_for_each_entry(pdf, &post_deinit_list, list)
2681 pdf->fct();
2682
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002683 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002684 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002685 free(global.chroot); global.chroot = NULL;
2686 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002687 free(global.node); global.node = NULL;
2688 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002689 free(oldpids); oldpids = NULL;
Tim Duesterhus9e0c2f32020-09-10 19:46:39 +02002690 free(old_argv); old_argv = NULL;
Dragan Dosen4f014152020-06-18 16:56:47 +02002691 free(localpeer); localpeer = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002692 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002693 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002694
William Lallemand0f99e342011-10-12 17:50:54 +02002695 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2696 LIST_DEL(&log->list);
2697 free(log);
2698 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002699 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002700 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002701 LIST_DEL(&wl->list);
2702 free(wl);
2703 }
2704
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002705 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2706 if (bol->must_free)
2707 free((void *)bol->str);
2708 LIST_DEL(&bol->list);
2709 free(bol);
2710 }
2711
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002712 list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
2713 LIST_DEL(&pxdf->list);
2714 free(pxdf);
2715 }
2716
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002717 list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
2718 LIST_DEL(&pdf->list);
2719 free(pdf);
2720 }
2721
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002722 list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
2723 LIST_DEL(&srvdf->list);
2724 free(srvdf);
2725 }
2726
Tim Duesterhusfc854942020-09-10 19:46:42 +02002727 list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
2728 LIST_DEL(&pcf->list);
2729 free(pcf);
2730 }
2731
Tim Duesterhus34bef072020-07-04 11:49:50 +02002732 list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
2733 LIST_DEL(&pscf->list);
2734 free(pscf);
2735 }
2736
Tim Duesterhus53508d62020-09-10 19:46:40 +02002737 list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
2738 LIST_DEL(&ppcf->list);
2739 free(ppcf);
2740 }
2741
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002742 list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
2743 LIST_DEL(&tif->list);
2744 free(tif);
2745 }
2746
2747 list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
2748 LIST_DEL(&tdf->list);
2749 free(tdf);
2750 }
2751
2752 list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
2753 LIST_DEL(&taf->list);
2754 free(taf);
2755 }
2756
2757 list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
2758 LIST_DEL(&tff->list);
2759 free(tff);
2760 }
2761
Christopher Fauletff2613e2016-11-09 11:36:17 +01002762 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002763 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002764 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002765} /* end deinit() */
2766
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002767__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002768{
2769 deinit();
2770 exit(status);
2771}
William Lallemand72160322018-11-06 17:37:16 +01002772
Willy Tarreau918ff602011-07-25 16:33:49 +02002773/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002774void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002775{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002776 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002777
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002778 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002779 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002780 wake_expired_tasks();
2781
William Lallemand1aab50b2018-06-07 09:46:01 +02002782 /* check if we caught some signals and process them in the
2783 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002784 if (signal_queue_len && tid == 0) {
2785 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002786 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002787 }
2788
2789 /* Process a few tasks */
2790 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002791
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002792 /* also stop if we failed to cleanly stop all tasks */
2793 if (killed > 1)
2794 break;
2795
Willy Tarreau10146c92015-04-13 20:44:19 +02002796 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002797 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002798 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002799 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002800 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002801 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2802 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002803 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002804 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002805 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002806 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002807 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002808 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002809
Willy Tarreau4f46a352020-03-23 09:27:28 +01002810 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002811 int i;
2812
2813 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002814 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2815 /* notify all threads that stopping was just set */
2816 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002817 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002818 wake_thread(i);
2819 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002820 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002821
2822 /* stop when there's nothing left to do */
2823 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002824 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2825 /* wake all threads waiting on jobs==0 */
2826 for (i = 0; i < global.nbthread; i++)
2827 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2828 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002829 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002830 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002831 }
2832
Willy Tarreauc49ba522019-12-11 08:12:23 +01002833 /* If we have to sleep, measure how long */
2834 next = wake ? TICK_ETERNITY : next_timer_expiry();
2835
Willy Tarreau58b458d2008-06-29 22:40:23 +02002836 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002837 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002838
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002839 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002840 }
2841}
2842
Christopher Faulet1d17c102017-08-29 15:38:48 +02002843static void *run_thread_poll_loop(void *data)
2844{
Willy Tarreau082b6282019-05-22 14:42:12 +02002845 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002846 struct per_thread_init_fct *ptif;
2847 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002848 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002849 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002850 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2851 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002852
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002853 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002854 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002855
Willy Tarreauf6178242019-05-21 19:46:58 +02002856#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002857#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002858 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002859#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002860 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002861#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002862#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002863 /* Now, initialize one thread init at a time. This is better since
2864 * some init code is a bit tricky and may release global resources
2865 * after reallocating them locally. This will also ensure there is
2866 * no race on file descriptors allocation.
2867 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002868#ifdef USE_THREAD
2869 pthread_mutex_lock(&init_mutex);
2870#endif
2871 /* The first thread must set the number of threads left */
2872 if (!init_left)
2873 init_left = global.nbthread;
2874 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002875
Christopher Faulet1d17c102017-08-29 15:38:48 +02002876 tv_update_date(-1,-1);
2877
Willy Tarreau082b6282019-05-22 14:42:12 +02002878 /* per-thread alloc calls performed here are not allowed to snoop on
2879 * other threads, so they are free to initialize at their own rhythm
2880 * as long as they act as if they were alone. None of them may rely
2881 * on resources initialized by the other ones.
2882 */
2883 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2884 if (!ptaf->fct()) {
2885 ha_alert("failed to allocate resources for thread %u.\n", tid);
2886 exit(1);
2887 }
2888 }
2889
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002890 /* per-thread init calls performed here are not allowed to snoop on
2891 * other threads, so they are free to initialize at their own rhythm
2892 * as long as they act as if they were alone.
2893 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002894 list_for_each_entry(ptif, &per_thread_init_list, list) {
2895 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002896 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002897 exit(1);
2898 }
2899 }
2900
Willy Tarreau71092822019-06-10 09:51:04 +02002901 /* enabling protocols will result in fd_insert() calls to be performed,
2902 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002903 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002904 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002905 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002906 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002907
Willy Tarreau34a150c2019-06-11 09:16:41 +02002908#ifdef USE_THREAD
2909 pthread_cond_broadcast(&init_cond);
2910 pthread_mutex_unlock(&init_mutex);
2911
2912 /* now wait for other threads to finish starting */
2913 pthread_mutex_lock(&init_mutex);
2914 while (init_left)
2915 pthread_cond_wait(&init_cond, &init_mutex);
2916 pthread_mutex_unlock(&init_mutex);
2917#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002918
Willy Tarreaua45a8b52019-12-06 16:31:45 +01002919#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
2920 /* Let's refrain from using setuid executables. This way the impact of
2921 * an eventual vulnerability in a library remains limited. It may
2922 * impact external checks but who cares about them anyway ? In the
2923 * worst case it's possible to disable the option. Obviously we do this
2924 * in workers only. We can't hard-fail on this one as it really is
2925 * implementation dependent though we're interested in feedback, hence
2926 * the warning.
2927 */
2928 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
2929 static int warn_fail;
2930 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
2931 ha_warning("Failed to disable setuid, please report to developers with detailed "
2932 "information about your operating system. You can silence this warning "
2933 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
2934 }
2935 }
2936#endif
2937
Willy Tarreaud96f1122019-12-03 07:07:36 +01002938#if defined(RLIMIT_NPROC)
2939 /* all threads have started, it's now time to prevent any new thread
2940 * or process from starting. Obviously we do this in workers only. We
2941 * can't hard-fail on this one as it really is implementation dependent
2942 * though we're interested in feedback, hence the warning.
2943 */
2944 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
2945 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
2946 static int warn_fail;
2947
2948 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
2949 ha_warning("Failed to disable forks, please report to developers with detailed "
2950 "information about your operating system. You can silence this warning "
2951 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
2952 }
2953 }
2954#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02002955 run_poll_loop();
2956
2957 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2958 ptdf->fct();
2959
Willy Tarreau082b6282019-05-22 14:42:12 +02002960 list_for_each_entry(ptff, &per_thread_free_list, list)
2961 ptff->fct();
2962
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002963#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002964 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002965 if (tid > 0)
2966 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002967#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002968 return NULL;
2969}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002970
William Dauchyf9af9d72019-11-17 15:47:16 +01002971/* set uid/gid depending on global settings */
2972static void set_identity(const char *program_name)
2973{
2974 if (global.gid) {
2975 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2976 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2977 " without 'uid'/'user' is generally useless.\n", program_name);
2978
2979 if (setgid(global.gid) == -1) {
2980 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
2981 protocol_unbind_all();
2982 exit(1);
2983 }
2984 }
2985
2986 if (global.uid && setuid(global.uid) == -1) {
2987 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
2988 protocol_unbind_all();
2989 exit(1);
2990 }
2991}
2992
Willy Tarreaubaaee002006-06-26 02:48:02 +02002993int main(int argc, char **argv)
2994{
2995 int err, retry;
2996 struct rlimit limit;
Willy Tarreau269ab312012-09-05 08:02:48 +02002997 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002998
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002999 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003000
Willy Tarreauff9c9142019-02-07 10:39:36 +01003001 /* this can only safely be done here, though it's optimized away by
3002 * the compiler.
3003 */
3004 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3005 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3006 "HAProxy was built with value %d, please fix it and rebuild.\n",
3007 LONGBITS, MAX_PROCS);
3008 exit(1);
3009 }
3010
Willy Tarreaubf696402019-03-01 10:09:28 +01003011 /* take a copy of initial limits before we possibly change them */
3012 getrlimit(RLIMIT_NOFILE, &limit);
3013 rlim_fd_cur_at_boot = limit.rlim_cur;
3014 rlim_fd_max_at_boot = limit.rlim_max;
3015
Willy Tarreau5794fb02018-11-25 18:43:29 +01003016 /* process all initcalls in order of potential dependency */
3017 RUN_INITCALLS(STG_PREPARE);
3018 RUN_INITCALLS(STG_LOCK);
3019 RUN_INITCALLS(STG_ALLOC);
3020 RUN_INITCALLS(STG_POOL);
3021 RUN_INITCALLS(STG_REGISTER);
3022 RUN_INITCALLS(STG_INIT);
3023
Emeric Bruncf20bf12010-10-22 16:06:11 +02003024 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003025 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3026 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3027 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003028 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003029
Willy Tarreaue437c442010-03-17 18:02:46 +01003030 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3031 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3032 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003033 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003034 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003035
Willy Tarreaudc23a922011-02-16 11:10:36 +01003036 /* ulimits */
3037 if (!global.rlimit_nofile)
3038 global.rlimit_nofile = global.maxsock;
3039
3040 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003041 limit.rlim_cur = global.rlimit_nofile;
3042 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3043
Willy Tarreaudc23a922011-02-16 11:10:36 +01003044 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003045 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003046 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3047 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3048 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3049 if (!(global.mode & MODE_MWORKER))
3050 exit(1);
3051 }
3052 else {
3053 /* try to set it to the max possible at least */
3054 limit.rlim_cur = limit.rlim_max;
3055 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3056 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003057
William Dauchya5194602020-03-28 19:29:58 +01003058 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003059 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3060 global.rlimit_nofile = limit.rlim_cur;
3061 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003062 }
3063 }
3064
3065 if (global.rlimit_memmax) {
3066 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003067 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003068#ifdef RLIMIT_AS
3069 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003070 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3071 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3072 argv[0], global.rlimit_memmax);
3073 if (!(global.mode & MODE_MWORKER))
3074 exit(1);
3075 }
3076 else
William Dauchya5194602020-03-28 19:29:58 +01003077 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003078 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003079 }
3080#else
3081 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003082 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3083 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3084 argv[0], global.rlimit_memmax);
3085 if (!(global.mode & MODE_MWORKER))
3086 exit(1);
3087 }
3088 else
William Dauchya5194602020-03-28 19:29:58 +01003089 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003090 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003091 }
3092#endif
3093 }
3094
Olivier Houchardf73629d2017-04-05 22:33:04 +02003095 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003096 if (strcmp("/dev/null", old_unixsocket) != 0) {
Willy Tarreau42961742020-08-28 18:42:45 +02003097 if (sock_get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003098 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003099 if (!(global.mode & MODE_MWORKER))
3100 exit(1);
3101 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003102 }
3103 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003104 get_cur_unixsocket();
3105
Willy Tarreaubaaee002006-06-26 02:48:02 +02003106 /* We will loop at most 100 times with 10 ms delay each time.
3107 * That's at most 1 second. We only send a signal to old pids
3108 * if we cannot grab at least one port.
3109 */
3110 retry = MAX_START_RETRIES;
3111 err = ERR_NONE;
3112 while (retry >= 0) {
3113 struct timeval w;
Willy Tarreaue91bff22020-09-02 11:11:43 +02003114 err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003115 /* exit the loop on no error or fatal error */
3116 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003117 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003118 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003119 break;
3120
3121 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3122 * listening sockets. So on those platforms, it would be wiser to
3123 * simply send SIGUSR1, which will not be undoable.
3124 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003125 if (tell_old_pids(SIGTTOU) == 0) {
3126 /* no need to wait if we can't contact old pids */
3127 retry = 0;
3128 continue;
3129 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003130 /* give some time to old processes to stop listening */
3131 w.tv_sec = 0;
3132 w.tv_usec = 10*1000;
3133 select(0, NULL, NULL, NULL, &w);
3134 retry--;
3135 }
3136
Willy Tarreaue91bff22020-09-02 11:11:43 +02003137 /* Note: protocol_bind_all() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003138 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaue91bff22020-09-02 11:11:43 +02003139 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreauf68da462009-06-09 14:36:00 +02003140 if (retry != MAX_START_RETRIES && nb_oldpids) {
3141 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003142 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003143 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003144 exit(1);
3145 }
3146
Willy Tarreaue91bff22020-09-02 11:11:43 +02003147 start_proxies();
3148
William Lallemand944e6192018-11-21 15:48:31 +01003149 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003150 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003151 /* Note: we don't have to send anything to the old pids because we
3152 * never stopped them. */
3153 exit(1);
3154 }
3155
Willy Tarreaue91bff22020-09-02 11:11:43 +02003156 /* Ok, all listeners should now be bound, close any leftover sockets
Olivier Houchardf73629d2017-04-05 22:33:04 +02003157 * the previous process gave us, we don't need them anymore
3158 */
3159 while (xfer_sock_list != NULL) {
3160 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3161 close(xfer_sock_list->fd);
3162 free(xfer_sock_list->iface);
3163 free(xfer_sock_list->namespace);
3164 free(xfer_sock_list);
3165 xfer_sock_list = tmpxfer;
3166 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003167
Willy Tarreaubaaee002006-06-26 02:48:02 +02003168 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003169 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3170 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003171
Willy Tarreaubaaee002006-06-26 02:48:02 +02003172 /* MODE_QUIET can inhibit alerts and warnings below this line */
3173
PiBa-NL149a81a2017-12-25 21:03:31 +01003174 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3175 /* either stdin/out/err are already closed or should stay as they are. */
3176 if ((global.mode & MODE_DAEMON)) {
3177 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3178 global.mode &= ~MODE_VERBOSE;
3179 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3180 }
3181 } else {
3182 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3183 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003184 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003185 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003186 }
3187
3188 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003189 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003190 unlink(global.pidfile);
3191 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3192 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003193 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003194 if (nb_oldpids)
3195 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003196 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003197 exit(1);
3198 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003199 }
3200
Willy Tarreaub38651a2007-03-24 17:24:39 +01003201 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003202 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3203 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003204 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003205 exit(1);
3206 }
3207
Jackie Tapia749f74c2020-07-22 18:59:40 -05003208 /* If the user is not root, we'll still let them try the configuration
3209 * but we inform them that unexpected behaviour may occur.
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003210 */
3211 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003212 ha_warning("[%s.main()] Some options which require full privileges"
3213 " might not work well.\n"
3214 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003215
William Lallemand095ba4c2017-06-01 17:38:50 +02003216 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3217
3218 /* chroot if needed */
3219 if (global.chroot != NULL) {
3220 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003221 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003222 if (nb_oldpids)
3223 tell_old_pids(SIGTTIN);
3224 protocol_unbind_all();
3225 exit(1);
3226 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003227 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003228 }
3229
William Lallemand944e6192018-11-21 15:48:31 +01003230 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003231 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003232
William Lallemand27edc4b2019-05-07 17:49:33 +02003233 /* send a SIGTERM to workers who have a too high reloads number */
3234 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3235 mworker_kill_max_reloads(SIGTERM);
3236
William Lallemand8a361b52017-06-20 11:20:33 +02003237 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3238 nb_oldpids = 0;
3239 free(oldpids);
3240 oldpids = NULL;
3241 }
3242
3243
Willy Tarreaubaaee002006-06-26 02:48:02 +02003244 /* Note that any error at this stage will be fatal because we will not
3245 * be able to restart the old pids.
3246 */
3247
William Dauchyf9af9d72019-11-17 15:47:16 +01003248 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3249 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003250
Willy Tarreaubaaee002006-06-26 02:48:02 +02003251 /* check ulimits */
3252 limit.rlim_cur = limit.rlim_max = 0;
3253 getrlimit(RLIMIT_NOFILE, &limit);
3254 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003255 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3256 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3257 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3258 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3259 global.maxsock);
3260 if (!(global.mode & MODE_MWORKER))
3261 exit(1);
3262 }
3263 else
3264 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
William Dauchya5194602020-03-28 19:29:58 +01003265 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003266 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3267 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003268 }
3269
William Lallemand944e6192018-11-21 15:48:31 +01003270 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003271 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003272 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003273 int ret = 0;
3274 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003275 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003276
William Lallemand095ba4c2017-06-01 17:38:50 +02003277 /*
3278 * if daemon + mworker: must fork here to let a master
3279 * process live in background before forking children
3280 */
William Lallemand73b85e72017-06-01 17:38:51 +02003281
3282 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3283 && (global.mode & MODE_MWORKER)
3284 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003285 ret = fork();
3286 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003287 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003288 protocol_unbind_all();
3289 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003290 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003291 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003292 } else /* change the process group ID in the child (master process) */
3293 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003294 }
William Lallemande20b6a62017-06-01 17:38:55 +02003295
William Lallemande20b6a62017-06-01 17:38:55 +02003296
William Lallemanddeed7802017-11-06 11:00:04 +01003297 /* if in master-worker mode, write the PID of the father */
3298 if (global.mode & MODE_MWORKER) {
3299 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003300 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003301 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003302 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003303 }
3304
Willy Tarreaubaaee002006-06-26 02:48:02 +02003305 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003306 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003307 if (global.mode & MODE_MWORKER)
3308 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003309 for (proc = 0; proc < global.nbproc; proc++) {
3310 ret = fork();
3311 if (ret < 0) {
3312 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3313 protocol_unbind_all();
3314 exit(1); /* there has been an error */
3315 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003316 else if (ret == 0) { /* child breaks here */
3317 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003318 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003319 }
William Lallemand944e6192018-11-21 15:48:31 +01003320 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3321 char pidstr[100];
3322 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003323 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003324 }
3325 if (global.mode & MODE_MWORKER) {
3326 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003327
William Lallemand220567e2018-11-21 18:04:53 +01003328 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003329 /* find the right mworker_proc */
3330 list_for_each_entry(child, &proc_list, list) {
3331 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003332 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003333 child->timestamp = now.tv_sec;
3334 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003335 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003336 break;
3337 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003338 }
3339 }
William Lallemandbc193052018-09-11 10:06:26 +02003340
William Lallemand944e6192018-11-21 15:48:31 +01003341 relative_pid++; /* each child will get a different one */
3342 pid_bit <<= 1;
3343 }
3344 } else {
3345 /* wait mode */
3346 global.nbproc = 1;
3347 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003348 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003349
3350#ifdef USE_CPU_AFFINITY
3351 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003352 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003353 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003354#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003355 {
3356 cpuset_t cpuset;
3357 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003358 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003359
3360 CPU_ZERO(&cpuset);
3361 while ((i = ffsl(cpu_map)) > 0) {
3362 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003363 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003364 }
3365 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3366 }
David Carlier5e4c8e22019-09-13 05:12:58 +01003367#elif defined(__linux__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003368 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003369#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003370#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003371 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003372 if (pidfd >= 0) {
3373 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3374 close(pidfd);
3375 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003376
3377 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003378 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003379
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003380 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003381 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003382
3383 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3384 (global.mode & MODE_DAEMON)) {
3385 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003386 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3387 stdio_quiet(-1);
3388
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003389 global.mode &= ~MODE_VERBOSE;
3390 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003391 }
3392
William Lallemandb3f2be32018-09-11 10:06:18 +02003393 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003394 /* should never get there */
3395 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003396 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003397#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003398 ssl_free_dh();
3399#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003400 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003401 }
3402
William Lallemandcb11fd22017-06-01 17:38:52 +02003403 /* child must never use the atexit function */
3404 atexit_flag = 0;
3405
William Lallemandbc193052018-09-11 10:06:26 +02003406 /* close useless master sockets */
3407 if (global.mode & MODE_MWORKER) {
3408 struct mworker_proc *child, *it;
3409 master = 0;
3410
William Lallemand309dc9a2018-10-26 14:47:45 +02003411 mworker_cli_proxy_stop();
3412
William Lallemandbc193052018-09-11 10:06:26 +02003413 /* free proc struct of other processes */
3414 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003415 /* close the FD of the master side for all
3416 * workers, we don't need to close the worker
3417 * side of other workers since it's done with
3418 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003419 if (child->ipc_fd[0] >= 0)
3420 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003421 if (child->relative_pid == relative_pid &&
3422 child->reloads == 0) {
3423 /* keep this struct if this is our pid */
3424 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003425 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003426 }
William Lallemandbc193052018-09-11 10:06:26 +02003427 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003428 mworker_free_child(child);
3429 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003430 }
3431 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003432
William Lallemande1340412017-12-28 16:09:36 +01003433 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3434 devnullfd = open("/dev/null", O_RDWR, 0);
3435 if (devnullfd < 0) {
3436 ha_alert("Cannot open /dev/null\n");
3437 exit(EXIT_FAILURE);
3438 }
3439 }
3440
William Lallemand095ba4c2017-06-01 17:38:50 +02003441 /* Must chroot and setgid/setuid in the children */
3442 /* chroot if needed */
3443 if (global.chroot != NULL) {
3444 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003445 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003446 if (nb_oldpids)
3447 tell_old_pids(SIGTTIN);
3448 protocol_unbind_all();
3449 exit(1);
3450 }
3451 }
3452
3453 free(global.chroot);
3454 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003455 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003456
William Lallemand7f80eb22017-05-26 18:19:55 +02003457 /* pass through every cli socket, and check if it's bound to
3458 * the current process and if it exposes listeners sockets.
3459 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3460 * */
3461
3462 if (global.stats_fe) {
3463 struct bind_conf *bind_conf;
3464
3465 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3466 if (bind_conf->level & ACCESS_FD_LISTENERS) {
Willy Tarreaue26993c2020-09-03 07:18:55 +02003467 if (!bind_conf->settings.bind_proc || bind_conf->settings.bind_proc & (1UL << proc)) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003468 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3469 break;
3470 }
3471 }
3472 }
3473 }
3474
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003475 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003476 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003477 while (px != NULL) {
3478 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003479 if (!(px->bind_proc & (1UL << proc))) {
3480 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3481 zombify_proxy(px);
3482 else
3483 stop_proxy(px);
3484 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003485 }
3486 px = px->next;
3487 }
3488
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003489 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003490 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003491 if (!curpeers->peers_fe)
3492 continue;
3493
3494 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3495 continue;
3496
3497 stop_proxy(curpeers->peers_fe);
3498 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003499 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003500 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003501 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003502 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003503 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003504 curpeers->peers_fe = NULL;
3505 }
3506
William Lallemand2e8fad92018-11-13 16:18:23 +01003507 /*
3508 * This is only done in daemon mode because we might want the
3509 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3510 * we should now close the 3 first FDs to ensure that we can
3511 * detach from the TTY. We MUST NOT do it in other cases since
3512 * it would have already be done, and 0-2 would have been
3513 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003514 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003515 if ((global.mode & MODE_DAEMON) &&
3516 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003517 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003518 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003519 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003520 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3521 }
3522 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003523 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3524 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003525 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003526 }
3527
William Dauchye039f262019-11-17 15:47:15 +01003528 /* try our best to re-enable core dumps depending on system capabilities.
3529 * What is addressed here :
3530 * - remove file size limits
3531 * - remove core size limits
3532 * - mark the process dumpable again if it lost it due to user/group
3533 */
3534 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3535 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3536
3537#if defined(RLIMIT_FSIZE)
3538 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3539 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3540 ha_alert("[%s.main()] Failed to set the raise the maximum "
3541 "file size.\n", argv[0]);
3542 if (!(global.mode & MODE_MWORKER))
3543 exit(1);
3544 }
3545 else
3546 ha_warning("[%s.main()] Failed to set the raise the maximum "
William Dauchya5194602020-03-28 19:29:58 +01003547 "file size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003548 }
3549#endif
3550
3551#if defined(RLIMIT_CORE)
3552 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3553 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3554 ha_alert("[%s.main()] Failed to set the raise the core "
3555 "dump size.\n", argv[0]);
3556 if (!(global.mode & MODE_MWORKER))
3557 exit(1);
3558 }
3559 else
3560 ha_warning("[%s.main()] Failed to set the raise the core "
William Dauchya5194602020-03-28 19:29:58 +01003561 "dump size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003562 }
3563#endif
3564
3565#if defined(USE_PRCTL)
3566 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3567 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3568 "no core will be dumped.\n", argv[0]);
3569#endif
3570 }
3571
Christopher Faulete3a5e352017-10-24 13:53:54 +02003572 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003573 /*
3574 * That's it : the central polling loop. Run until we stop.
3575 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003576#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003577 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003578 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003579 int i;
3580
William Lallemand1aab50b2018-06-07 09:46:01 +02003581 /* ensure the signals will be blocked in every thread */
3582 sigfillset(&blocked_sig);
3583 sigdelset(&blocked_sig, SIGPROF);
3584 sigdelset(&blocked_sig, SIGBUS);
3585 sigdelset(&blocked_sig, SIGFPE);
3586 sigdelset(&blocked_sig, SIGILL);
3587 sigdelset(&blocked_sig, SIGSEGV);
3588 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3589
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003590 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003591 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003592 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003593 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003594
Christopher Faulet62519022017-10-16 15:49:32 +02003595#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003596 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003597 if (global.cpu_map.proc_t1[relative_pid-1])
3598 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3599
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003600 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003601 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003602 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003603
Willy Tarreau421f02e2018-01-20 18:19:22 +01003604 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003605 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003606#if defined(__APPLE__)
3607 int j;
3608 unsigned long cpu_map = global.cpu_map.thread[i];
3609
3610 while ((j = ffsl(cpu_map)) > 0) {
3611 thread_affinity_policy_data_t cpu_set = { j - 1 };
3612 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3613 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3614 cpu_map &= ~(1UL << (j - 1));
3615 }
3616#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003617#if defined(__FreeBSD__) || defined(__NetBSD__)
3618 cpuset_t cpuset;
3619#else
3620 cpu_set_t cpuset;
3621#endif
3622 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003623 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003624
3625 CPU_ZERO(&cpuset);
3626
3627 while ((j = ffsl(cpu_map)) > 0) {
3628 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003629 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003630 }
David Carliera92c5ce2019-09-13 05:03:12 +01003631 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003632 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003633#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003634 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003635 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003636#endif /* !USE_CPU_AFFINITY */
3637
William Lallemand1aab50b2018-06-07 09:46:01 +02003638 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003639 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003640
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003641 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003642 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003643
3644 /* Wait the end of other threads */
3645 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003646 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003647
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003648#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3649 show_lock_stats();
3650#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003651 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003652#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003653 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003654 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003655#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003656
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003657 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003658}
3659
Willy Tarreaubaaee002006-06-26 02:48:02 +02003660/*
3661 * Local variables:
3662 * c-indent-level: 8
3663 * c-basic-offset: 8
3664 * End:
3665 */