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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau9233c212021-01-08 21:19:40 +01003 * Copyright 2000-2021 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Ilya Shipitsin46a030c2020-07-05 16:36:08 +050010 * Please refer to RFC7230 - RFC7235 information about HTTP protocol, and
11 * RFC6265 for information about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
42#include <netdb.h>
43#include <fcntl.h>
44#include <errno.h>
45#include <signal.h>
46#include <stdarg.h>
47#include <sys/resource.h>
Tim Duesterhusdfad6a42020-04-18 16:02:47 +020048#include <sys/utsname.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
David Carlier5e4c8e22019-09-13 05:12:58 +010062#ifdef __APPLE__
63#include <mach/mach_types.h>
64#include <mach/thread_act.h>
65#include <mach/thread_policy.h>
66#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010067#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau636848a2019-04-15 19:38:50 +020069#if defined(USE_PRCTL)
70#include <sys/prctl.h>
71#endif
72
Willy Tarreaubaaee002006-06-26 02:48:02 +020073#ifdef DEBUG_FULL
74#include <assert.h>
75#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010076#if defined(USE_SYSTEMD)
77#include <systemd/sd-daemon.h>
78#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020079
Willy Tarreau6c3a6812020-03-06 18:57:15 +010080#include <import/sha1.h>
81
Willy Tarreaub2551052020-06-09 09:07:15 +020082#include <haproxy/acl.h>
83#include <haproxy/activity.h>
84#include <haproxy/api.h>
85#include <haproxy/arg.h>
86#include <haproxy/auth.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020087#include <haproxy/base64.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020088#include <haproxy/capture-t.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020089#include <haproxy/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020090#include <haproxy/chunk.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020091#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020092#include <haproxy/connection.h>
Willy Tarreaueb92deb2020-06-04 10:53:16 +020093#include <haproxy/dns.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020094#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020095#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020096#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +020097#include <haproxy/filters.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020098#include <haproxy/global.h>
Willy Tarreau86416052020-06-04 09:20:54 +020099#include <haproxy/hlua.h>
Willy Tarreauc761f842020-06-04 11:40:28 +0200100#include <haproxy/http_rules.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200101#include <haproxy/list.h>
Willy Tarreau213e9902020-06-04 14:58:24 +0200102#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +0200103#include <haproxy/log.h>
Willy Tarreaub5abe5b2020-06-04 14:07:37 +0200104#include <haproxy/mworker.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +0200105#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +0200106#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +0200107#include <haproxy/openssl-compat.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200108#include <haproxy/pattern.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +0200109#include <haproxy/peers.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200110#include <haproxy/pool.h>
111#include <haproxy/protocol.h>
Willy Tarreaubf3b06b2020-08-26 10:23:40 +0200112#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200113#include <haproxy/proxy.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +0200114#include <haproxy/regex.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200115#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +0200116#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +0200117#include <haproxy/session.h>
Willy Tarreau3727a8a2020-06-04 17:37:26 +0200118#include <haproxy/signal.h>
Willy Tarreau063d47d2020-08-28 16:29:53 +0200119#include <haproxy/sock.h>
Willy Tarreau25140cc2020-08-28 15:40:33 +0200120#include <haproxy/sock_inet.h>
Willy Tarreau209108d2020-06-04 20:30:20 +0200121#include <haproxy/ssl_sock.h>
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +0200122#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +0200123#include <haproxy/stream.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +0200124#include <haproxy/task.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +0200125#include <haproxy/thread.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200126#include <haproxy/time.h>
127#include <haproxy/tools.h>
128#include <haproxy/uri_auth-t.h>
Willy Tarreaua1718922020-06-04 16:25:31 +0200129#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200130#include <haproxy/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200131
Willy Tarreaubaaee002006-06-26 02:48:02 +0200132
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100133/* array of init calls for older platforms */
134DECLARE_INIT_STAGES;
135
Willy Tarreau477ecd82010-01-03 21:12:30 +0100136/* list of config files */
137static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200138int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100139int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100140unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100141unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200142
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100143volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100144volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100145
Willy Tarreaubaaee002006-06-26 02:48:02 +0200146/* global options */
147struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100148 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100149 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100150 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200151 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200152 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100153 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100154 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100155 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200156 .unix_bind = {
157 .ux = {
158 .uid = -1,
159 .gid = -1,
160 .mode = 0,
161 }
162 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200163 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100164 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100165 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100166 .maxrewrite = MAXREWRITE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100167 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200168 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200169 .pool_low_ratio = 20,
170 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200171 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200172#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100173 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200174#endif
William Lallemandf3747832012-11-09 12:33:10 +0100175 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100176#ifdef DEFAULT_IDLE_TIMER
177 .idle_timer = DEFAULT_IDLE_TIMER,
178#else
179 .idle_timer = 1000, /* 1 second */
180#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200181 },
Emeric Brun76d88952012-10-05 15:47:31 +0200182#ifdef USE_OPENSSL
183#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200184 .maxsslconn = DEFAULT_MAXSSLCONN,
185#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200186#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200187 /* others NULL OK */
188};
189
190/*********************************************************************/
191
192int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100193int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200194int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100195int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100196int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100197int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200198
Ilya Shipitsin46a030c2020-07-05 16:36:08 +0500199/* Here we store information about the pids of the processes we may pause
Willy Tarreaubaaee002006-06-26 02:48:02 +0200200 * or kill. We will send them a signal every 10 ms until we can bind to all
201 * our ports. With 200 retries, that's about 2 seconds.
202 */
203#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200204static int *oldpids = NULL;
205static int oldpids_sig; /* use USR1 or TERM */
206
Olivier Houchardf73629d2017-04-05 22:33:04 +0200207/* Path to the unix socket we use to retrieve listener sockets from the old process */
208static const char *old_unixsocket;
209
William Lallemand85b0bd92017-06-01 17:38:53 +0200210static char *cur_unixsocket = NULL;
211
William Lallemandcb11fd22017-06-01 17:38:52 +0200212int atexit_flag = 0;
213
Willy Tarreaubb545b42010-08-25 12:58:59 +0200214int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200215const int zero = 0;
216const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200217const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200218
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100219char hostname[MAX_HOSTNAME_LEN];
Dragan Dosen4f014152020-06-18 16:56:47 +0200220char *localpeer = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200221
William Lallemand00417412020-06-05 14:08:41 +0200222static char **old_argv = NULL; /* previous argv but cleaned up */
William Lallemand73b85e72017-06-01 17:38:51 +0200223
William Lallemandbc193052018-09-11 10:06:26 +0200224struct list proc_list = LIST_HEAD_INIT(proc_list);
225
226int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100227unsigned int rlim_fd_cur_at_boot = 0;
228unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200229
Willy Tarreau6c3a6812020-03-06 18:57:15 +0100230/* per-boot randomness */
231unsigned char boot_seed[20]; /* per-boot random seed (160 bits initially) */
232
William Lallemand16dd1b32018-11-19 18:46:18 +0100233struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200234
William Lallemandb3f2be32018-09-11 10:06:18 +0200235static void *run_thread_poll_loop(void *data);
236
Willy Tarreauff055502014-04-28 22:27:06 +0200237/* bitfield of a few warnings to emit just once (WARN_*) */
238unsigned int warned = 0;
239
William Lallemande7361152018-10-26 14:47:36 +0200240/* master CLI configuration (-S flag) */
241struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100242
243/* These are strings to be reported in the output of "haproxy -vv". They may
244 * either be constants (in which case must_free must be zero) or dynamically
245 * allocated strings to pass to free() on exit, and in this case must_free
246 * must be non-zero.
247 */
248struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
249struct build_opts_str {
250 struct list list;
251 const char *str;
252 int must_free;
253};
254
Willy Tarreaue6945732016-12-21 19:57:00 +0100255/* These functions are called just after the point where the program exits
256 * after a config validity check, so they are generally suited for resource
257 * allocation and slow initializations that should be skipped during basic
258 * config checks. The functions must return 0 on success, or a combination
259 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
260 * and immediate exit, so the function must have emitted any useful error.
261 */
262struct list post_check_list = LIST_HEAD_INIT(post_check_list);
263struct post_check_fct {
264 struct list list;
265 int (*fct)();
266};
267
Christopher Fauletc1692962019-08-12 09:51:07 +0200268/* These functions are called for each proxy just after the config validity
269 * check. The functions must return 0 on success, or a combination of ERR_*
270 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
271 * exit, so the function must have emitted any useful error.
272 */
273struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
274struct post_proxy_check_fct {
275 struct list list;
276 int (*fct)(struct proxy *);
277};
278
279/* These functions are called for each server just after the config validity
280 * check. The functions must return 0 on success, or a combination of ERR_*
281 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
282 * exit, so the function must have emitted any useful error.
283 */
284struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
285struct post_server_check_fct {
286 struct list list;
287 int (*fct)(struct server *);
288};
289
Willy Tarreau082b6282019-05-22 14:42:12 +0200290/* These functions are called for each thread just after the thread creation
291 * and before running the init functions. They should be used to do per-thread
292 * (re-)allocations that are needed by subsequent functoins. They must return 0
293 * if an error occurred. */
294struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
295struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100296 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200297 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100298};
299
Christopher Faulet415f6112017-07-25 16:52:58 +0200300/* These functions are called for each thread just after the thread creation
301 * and before running the scheduler. They should be used to do per-thread
302 * initializations. They must return 0 if an error occurred. */
303struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
304struct per_thread_init_fct {
305 struct list list;
306 int (*fct)();
307};
308
Willy Tarreau082b6282019-05-22 14:42:12 +0200309/* These functions are called when freeing the global sections at the end of
310 * deinit, after everything is stopped. They don't return anything. They should
311 * not release shared resources that are possibly used by other deinit
312 * functions, only close/release what is private. Use the per_thread_free_list
313 * to release shared resources.
314 */
315struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
316struct post_deinit_fct {
317 struct list list;
318 void (*fct)();
319};
320
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200321/* These functions are called when freeing a proxy during the deinit, after
322 * everything isg stopped. They don't return anything. They should not release
323 * the proxy itself or any shared resources that are possibly used by other
324 * deinit functions, only close/release what is private.
325 */
326struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
327struct proxy_deinit_fct {
328 struct list list;
329 void (*fct)(struct proxy *);
330};
331
332/* These functions are called when freeing a server during the deinit, after
333 * everything isg stopped. They don't return anything. They should not release
334 * the proxy itself or any shared resources that are possibly used by other
335 * deinit functions, only close/release what is private.
336 */
337struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
338struct server_deinit_fct {
339 struct list list;
340 void (*fct)(struct server *);
341};
342
Willy Tarreau082b6282019-05-22 14:42:12 +0200343/* These functions are called when freeing the global sections at the end of
344 * deinit, after the thread deinit functions, to release unneeded memory
345 * allocations. They don't return anything, and they work in best effort mode
346 * as their sole goal is to make valgrind mostly happy.
347 */
348struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
349struct per_thread_free_fct {
350 struct list list;
Christopher Fauletbbda99b2020-11-06 15:19:19 +0100351 void (*fct)();
Willy Tarreau082b6282019-05-22 14:42:12 +0200352};
353
Christopher Faulet415f6112017-07-25 16:52:58 +0200354/* These functions are called for each thread just after the scheduler loop and
355 * before exiting the thread. They don't return anything and, as for post-deinit
356 * functions, they work in best effort mode as their sole goal is to make
357 * valgrind mostly happy. */
358struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
359struct per_thread_deinit_fct {
360 struct list list;
361 void (*fct)();
362};
363
Willy Tarreaubaaee002006-06-26 02:48:02 +0200364/*********************************************************************/
365/* general purpose functions ***************************************/
366/*********************************************************************/
367
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100368/* used to register some build option strings at boot. Set must_free to
369 * non-zero if the string must be freed upon exit.
370 */
371void hap_register_build_opts(const char *str, int must_free)
372{
373 struct build_opts_str *b;
374
375 b = calloc(1, sizeof(*b));
376 if (!b) {
377 fprintf(stderr, "out of memory\n");
378 exit(1);
379 }
380 b->str = str;
381 b->must_free = must_free;
382 LIST_ADDQ(&build_opts_list, &b->list);
383}
384
Willy Tarreaue6945732016-12-21 19:57:00 +0100385/* used to register some initialization functions to call after the checks. */
386void hap_register_post_check(int (*fct)())
387{
388 struct post_check_fct *b;
389
390 b = calloc(1, sizeof(*b));
391 if (!b) {
392 fprintf(stderr, "out of memory\n");
393 exit(1);
394 }
395 b->fct = fct;
396 LIST_ADDQ(&post_check_list, &b->list);
397}
398
Christopher Fauletc1692962019-08-12 09:51:07 +0200399/* used to register some initialization functions to call for each proxy after
400 * the checks.
401 */
402void hap_register_post_proxy_check(int (*fct)(struct proxy *))
403{
404 struct post_proxy_check_fct *b;
405
406 b = calloc(1, sizeof(*b));
407 if (!b) {
408 fprintf(stderr, "out of memory\n");
409 exit(1);
410 }
411 b->fct = fct;
412 LIST_ADDQ(&post_proxy_check_list, &b->list);
413}
414
415/* used to register some initialization functions to call for each server after
416 * the checks.
417 */
418void hap_register_post_server_check(int (*fct)(struct server *))
419{
420 struct post_server_check_fct *b;
421
422 b = calloc(1, sizeof(*b));
423 if (!b) {
424 fprintf(stderr, "out of memory\n");
425 exit(1);
426 }
427 b->fct = fct;
428 LIST_ADDQ(&post_server_check_list, &b->list);
429}
430
Willy Tarreau05554e62016-12-21 20:46:26 +0100431/* used to register some de-initialization functions to call after everything
432 * has stopped.
433 */
434void hap_register_post_deinit(void (*fct)())
435{
436 struct post_deinit_fct *b;
437
438 b = calloc(1, sizeof(*b));
439 if (!b) {
440 fprintf(stderr, "out of memory\n");
441 exit(1);
442 }
443 b->fct = fct;
444 LIST_ADDQ(&post_deinit_list, &b->list);
445}
446
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200447/* used to register some per proxy de-initialization functions to call after
448 * everything has stopped.
449 */
450void hap_register_proxy_deinit(void (*fct)(struct proxy *))
451{
452 struct proxy_deinit_fct *b;
453
454 b = calloc(1, sizeof(*b));
455 if (!b) {
456 fprintf(stderr, "out of memory\n");
457 exit(1);
458 }
459 b->fct = fct;
460 LIST_ADDQ(&proxy_deinit_list, &b->list);
461}
462
463
464/* used to register some per server de-initialization functions to call after
465 * everything has stopped.
466 */
467void hap_register_server_deinit(void (*fct)(struct server *))
468{
469 struct server_deinit_fct *b;
470
471 b = calloc(1, sizeof(*b));
472 if (!b) {
473 fprintf(stderr, "out of memory\n");
474 exit(1);
475 }
476 b->fct = fct;
477 LIST_ADDQ(&server_deinit_list, &b->list);
478}
479
Willy Tarreau082b6282019-05-22 14:42:12 +0200480/* used to register some allocation functions to call for each thread. */
481void hap_register_per_thread_alloc(int (*fct)())
482{
483 struct per_thread_alloc_fct *b;
484
485 b = calloc(1, sizeof(*b));
486 if (!b) {
487 fprintf(stderr, "out of memory\n");
488 exit(1);
489 }
490 b->fct = fct;
491 LIST_ADDQ(&per_thread_alloc_list, &b->list);
492}
493
Christopher Faulet415f6112017-07-25 16:52:58 +0200494/* used to register some initialization functions to call for each thread. */
495void hap_register_per_thread_init(int (*fct)())
496{
497 struct per_thread_init_fct *b;
498
499 b = calloc(1, sizeof(*b));
500 if (!b) {
501 fprintf(stderr, "out of memory\n");
502 exit(1);
503 }
504 b->fct = fct;
505 LIST_ADDQ(&per_thread_init_list, &b->list);
506}
507
508/* used to register some de-initialization functions to call for each thread. */
509void hap_register_per_thread_deinit(void (*fct)())
510{
511 struct per_thread_deinit_fct *b;
512
513 b = calloc(1, sizeof(*b));
514 if (!b) {
515 fprintf(stderr, "out of memory\n");
516 exit(1);
517 }
518 b->fct = fct;
519 LIST_ADDQ(&per_thread_deinit_list, &b->list);
520}
521
Willy Tarreau082b6282019-05-22 14:42:12 +0200522/* used to register some free functions to call for each thread. */
Christopher Fauletbbda99b2020-11-06 15:19:19 +0100523void hap_register_per_thread_free(void (*fct)())
Willy Tarreau082b6282019-05-22 14:42:12 +0200524{
525 struct per_thread_free_fct *b;
526
527 b = calloc(1, sizeof(*b));
528 if (!b) {
529 fprintf(stderr, "out of memory\n");
530 exit(1);
531 }
532 b->fct = fct;
533 LIST_ADDQ(&per_thread_free_list, &b->list);
534}
535
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100536static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200537{
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200538 struct utsname utsname;
539
Willy Tarreau08dd2022019-11-21 18:07:30 +0100540 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
541 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100542
543 if (strlen(PRODUCT_URL_BUGS) > 0) {
544 char base_version[20];
545 int dots = 0;
546 char *del;
547
548 /* only retrieve the base version without distro-specific extensions */
549 for (del = haproxy_version; *del; del++) {
550 if (*del == '.')
551 dots++;
552 else if (*del < '0' || *del > '9')
553 break;
554 }
555
556 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
557 if (dots < 2)
558 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
559 else
560 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
561 }
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200562
563 if (uname(&utsname) == 0) {
564 printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
565 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200566}
567
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100568static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100569{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100570 struct build_opts_str *item;
571
Willy Tarreau7b066db2007-12-02 11:28:59 +0100572 printf("Build options :"
573#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100574 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100575#endif
576#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100577 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100578#endif
579#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100580 "\n CC = " BUILD_CC
581#endif
582#ifdef BUILD_CFLAGS
583 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100584#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100585#ifdef BUILD_OPTIONS
586 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100587#endif
Tim Duesterhusc21f2272020-11-21 18:07:59 +0100588#ifdef BUILD_DEBUG
589 "\n DEBUG = " BUILD_DEBUG
590#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100591#ifdef BUILD_FEATURES
592 "\n\nFeature list : " BUILD_FEATURES
593#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200594 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100595 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200596 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100597 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200598
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100599 list_for_each_entry(item, &build_opts_list, list) {
600 puts(item->str);
601 }
602
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100603 putchar('\n');
604
Willy Tarreaube5b6852009-10-03 18:57:08 +0200605 list_pollers(stdout);
606 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200607 list_mux_proto(stdout);
608 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100609 list_services(stdout);
610 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100611 list_filters(stdout);
612 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100613}
614
Willy Tarreaubaaee002006-06-26 02:48:02 +0200615/*
616 * This function prints the command line usage and exits
617 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100618static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200619{
620 display_version();
621 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200622 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200623 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200624 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100625 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200626 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200627 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200628 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200629 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200630 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100631#if defined(USE_SYSTEMD)
632 " -Ws master-worker mode with systemd notify support.\n"
633#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200634 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200635 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100636 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200637 " -m limits the usable amount of memory (in MB)\n"
638 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200639 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200640 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200641#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200642 " -de disables epoll() usage even when available\n"
643#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200644#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200645 " -dk disables kqueue() usage even when available\n"
646#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200647#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000648 " -dv disables event ports usage even when available\n"
649#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200650#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200651 " -dp disables poll() usage even when available\n"
652#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200653#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100654 " -dS disables splice usage (broken on old kernels)\n"
655#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200656#if defined(USE_GETADDRINFO)
657 " -dG disables getaddrinfo() usage\n"
658#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000659#if defined(SO_REUSEPORT)
660 " -dR disables SO_REUSEPORT usage\n"
661#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100662 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100663 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200664 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200665 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200666 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200667 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200668 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100669 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200670 exit(1);
671}
672
673
674
675/*********************************************************************/
676/* more specific functions ***************************************/
677/*********************************************************************/
678
William Lallemand73b85e72017-06-01 17:38:51 +0200679/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
680 * pids the signal was correctly delivered to.
681 */
William Lallemande25473c2019-04-01 11:29:56 +0200682int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200683{
684 int p;
685 int ret = 0;
686 for (p = 0; p < nb_oldpids; p++)
687 if (kill(oldpids[p], sig) == 0)
688 ret++;
689 return ret;
690}
691
William Lallemand75ea0a02017-11-15 19:02:58 +0100692/*
William Lallemand73b85e72017-06-01 17:38:51 +0200693 * remove a pid forom the olpid array and decrease nb_oldpids
694 * return 1 pid was found otherwise return 0
695 */
696
697int delete_oldpid(int pid)
698{
699 int i;
700
701 for (i = 0; i < nb_oldpids; i++) {
702 if (oldpids[i] == pid) {
703 oldpids[i] = oldpids[nb_oldpids - 1];
704 oldpids[nb_oldpids - 1] = 0;
705 nb_oldpids--;
706 return 1;
707 }
708 }
709 return 0;
710}
711
William Lallemand85b0bd92017-06-01 17:38:53 +0200712
713static void get_cur_unixsocket()
714{
715 /* if -x was used, try to update the stat socket if not available anymore */
716 if (global.stats_fe) {
717 struct bind_conf *bind_conf;
718
719 /* pass through all stats socket */
720 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
721 struct listener *l;
722
723 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
724
Willy Tarreau37159062020-08-27 07:48:42 +0200725 if (l->rx.addr.ss_family == AF_UNIX &&
William Lallemand85b0bd92017-06-01 17:38:53 +0200726 (bind_conf->level & ACCESS_FD_LISTENERS)) {
727 const struct sockaddr_un *un;
728
Willy Tarreau37159062020-08-27 07:48:42 +0200729 un = (struct sockaddr_un *)&l->rx.addr;
William Lallemand85b0bd92017-06-01 17:38:53 +0200730 /* priority to old_unixsocket */
731 if (!cur_unixsocket) {
732 cur_unixsocket = strdup(un->sun_path);
733 } else {
734 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
735 free(cur_unixsocket);
736 cur_unixsocket = strdup(old_unixsocket);
737 return;
738 }
739 }
740 }
741 }
742 }
743 }
744 if (!cur_unixsocket && old_unixsocket)
745 cur_unixsocket = strdup(old_unixsocket);
746}
747
William Lallemand73b85e72017-06-01 17:38:51 +0200748/*
749 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800750 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200751 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100752void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200753{
William Lallemand00417412020-06-05 14:08:41 +0200754 char **next_argv = NULL;
755 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200756 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200757 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200758 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100759 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100760 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200761
762 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100763#if defined(USE_SYSTEMD)
764 if (global.tune.options & GTUNE_USE_SYSTEMD)
765 sd_notify(0, "RELOADING=1");
766#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200767 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
768
William Lallemandbc193052018-09-11 10:06:26 +0200769 mworker_proc_list_to_env(); /* put the children description in the env */
770
William Lallemand7c756a82018-11-26 11:53:40 +0100771 /* during the reload we must ensure that every FDs that can't be
772 * reuse (ie those that are not referenced in the proc_list)
773 * are closed or they will leak. */
774
775 /* close the listeners FD */
776 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200777
778 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
779 /* close the poller FD and the thread waker pipe FD */
780 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
781 ptdf->fct();
782 if (fdtab)
783 deinit_pollers();
784 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200785#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200786 /* close random device FDs */
787 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100788#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100789
Willy Tarreau8dca1952019-03-01 10:21:55 +0100790 /* restore the initial FD limits */
791 limit.rlim_cur = rlim_fd_cur_at_boot;
792 limit.rlim_max = rlim_fd_max_at_boot;
793 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
794 getrlimit(RLIMIT_NOFILE, &limit);
795 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
796 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
797 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
798 }
799
William Lallemand73b85e72017-06-01 17:38:51 +0200800 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200801 while (old_argv[old_argc])
802 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200803
William Lallemand85b0bd92017-06-01 17:38:53 +0200804 /* 1 for haproxy -sf, 2 for -x /socket */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200805 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1,
806 sizeof(*next_argv));
William Lallemand73b85e72017-06-01 17:38:51 +0200807 if (next_argv == NULL)
808 goto alloc_error;
809
William Lallemand00417412020-06-05 14:08:41 +0200810 /* copy the program name */
811 next_argv[next_argc++] = old_argv[0];
812
813 /* insert the new options just after argv[0] in case we have a -- */
814
William Lallemand73b85e72017-06-01 17:38:51 +0200815 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200816 if (mworker_child_nb() > 0) {
817 struct mworker_proc *child;
818
William Lallemand73b85e72017-06-01 17:38:51 +0200819 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200820
821 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100822 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200823 continue;
William Lallemand00417412020-06-05 14:08:41 +0200824 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200825 goto alloc_error;
826 msg = NULL;
827 }
828 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200829 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200830 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200831 next_argv[next_argc++] = "-x";
832 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200833 }
834
William Lallemand00417412020-06-05 14:08:41 +0200835 /* copy the previous options */
836 for (i = 1; i < old_argc; i++)
837 next_argv[next_argc++] = old_argv[i];
838
Christopher Faulet767a84b2017-11-24 16:50:31 +0100839 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200840 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100841 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200842
Christopher Faulet767a84b2017-11-24 16:50:31 +0100843 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand9fc6c972020-06-08 10:01:13 +0200844 free(next_argv);
845 next_argv = NULL;
William Lallemand722d4ca2017-11-15 19:02:55 +0100846 return;
847
William Lallemand73b85e72017-06-01 17:38:51 +0200848alloc_error:
William Lallemand00417412020-06-05 14:08:41 +0200849 free(next_argv);
850 next_argv = NULL;
Joseph Herlant07a08342018-11-15 10:43:05 -0800851 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200852 return;
853}
854
William Lallemandb3f2be32018-09-11 10:06:18 +0200855static void mworker_loop()
856{
857
858#if defined(USE_SYSTEMD)
859 if (global.tune.options & GTUNE_USE_SYSTEMD)
860 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
861#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200862 /* Busy polling makes no sense in the master :-) */
863 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200864
William Lallemandbc193052018-09-11 10:06:26 +0200865 master = 1;
866
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100867 signal_unregister(SIGTTIN);
868 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100869 signal_unregister(SIGUSR1);
870 signal_unregister(SIGHUP);
871 signal_unregister(SIGQUIT);
872
William Lallemandb3f2be32018-09-11 10:06:18 +0200873 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
874 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100875 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
876 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200877 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
878 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
879 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
880 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
881
882 mworker_unblock_signals();
883 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100884 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200885
William Lallemandbc193052018-09-11 10:06:26 +0200886 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
887 some SIGCHLD were lost */
888
William Lallemandb3f2be32018-09-11 10:06:18 +0200889 global.nbthread = 1;
890 relative_pid = 1;
891 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100892 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200893
William Lallemand2672eb92018-12-14 15:52:39 +0100894#ifdef USE_THREAD
895 tid_bit = 1;
896 all_threads_mask = 1;
897#endif
898
William Lallemandb3f2be32018-09-11 10:06:18 +0200899 jobs++; /* this is the "master" job, we want to take care of the
900 signals even if there is no listener so the poll loop don't
901 leave */
902
903 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200904 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200905}
William Lallemandcb11fd22017-06-01 17:38:52 +0200906
907/*
908 * Reexec the process in failure mode, instead of exiting
909 */
910void reexec_on_failure()
911{
912 if (!atexit_flag)
913 return;
914
915 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
916
Christopher Faulet767a84b2017-11-24 16:50:31 +0100917 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200918 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200919}
William Lallemand73b85e72017-06-01 17:38:51 +0200920
921
922/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200923 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
924 * a signal zero to all subscribers. This means that it's as easy as
925 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200926 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100927static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200928{
929 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200930 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100931 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200932}
933
934/*
935 * upon SIGTTOU, we pause everything
936 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100937static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200938{
Willy Tarreau775e0012020-09-24 16:36:26 +0200939 if (protocol_pause_all() & ERR_FATAL) {
940 const char *msg = "Some proxies refused to pause, performing soft stop now.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200941 ha_warning("%s", msg);
942 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200943 soft_stop();
944 }
Willy Tarreaubafbe012017-11-24 17:34:44 +0100945 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200946}
947
948/*
949 * upon SIGTTIN, let's have a soft stop.
950 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100951static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200952{
Willy Tarreau775e0012020-09-24 16:36:26 +0200953 if (protocol_resume_all() & ERR_FATAL) {
954 const char *msg = "Some proxies refused to resume, probably due to a conflict on a listening port. You may want to try again after the conflicting application is stopped, otherwise a restart might be needed to resume safe operations.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200955 ha_warning("%s", msg);
956 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200957 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200958}
959
960/*
961 * this function dumps every server's state when the process receives SIGHUP.
962 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100963static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200964{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100965 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200966
Christopher Faulet767a84b2017-11-24 16:50:31 +0100967 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200968 while (p) {
969 struct server *s = p->srv;
970
971 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
972 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100973 chunk_printf(&trash,
974 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
975 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200976 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100977 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200978 ha_warning("%s\n", trash.area);
979 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200980 s = s->next;
981 }
982
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200983 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
984 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100985 chunk_printf(&trash,
986 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
987 p->id,
988 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 +0200989 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100990 chunk_printf(&trash,
991 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
992 p->id,
993 (p->srv_bck) ? "is running on backup servers" : "has no server available",
994 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 +0200995 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100996 chunk_printf(&trash,
997 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
998 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
999 p->id, p->srv_act, p->srv_bck,
1000 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 +02001001 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001002 ha_warning("%s\n", trash.area);
1003 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001004
1005 p = p->next;
1006 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001007}
1008
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001009static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001010{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001011 /* dump memory usage then free everything possible */
1012 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001013 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001014}
1015
William Lallemande1340412017-12-28 16:09:36 +01001016/*
1017 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1018 * If <fd> < 0, it opens /dev/null and use it to dup
1019 *
1020 * In the case of chrooting, you have to open /dev/null before the chroot, and
1021 * pass the <fd> to this function
1022 */
1023static void stdio_quiet(int fd)
1024{
1025 if (fd < 0)
1026 fd = open("/dev/null", O_RDWR, 0);
1027
1028 if (fd > -1) {
1029 fclose(stdin);
1030 fclose(stdout);
1031 fclose(stderr);
1032
1033 dup2(fd, 0);
1034 dup2(fd, 1);
1035 dup2(fd, 2);
1036 if (fd > 2)
1037 close(fd);
1038 return;
1039 }
1040
1041 ha_alert("Cannot open /dev/null\n");
1042 exit(EXIT_FAILURE);
1043}
1044
1045
Joseph Herlant03420902018-11-15 10:41:50 -08001046/* This function checks if cfg_cfgfiles contains directories.
1047 * If it finds one, it adds all the files (and only files) it contains
1048 * in cfg_cfgfiles in place of the directory (and removes the directory).
1049 * It adds the files in lexical order.
1050 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001051 * It doesn't add files with name starting with '.'
1052 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001053static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001054{
1055 struct wordlist *wl, *wlb;
1056 char *err = NULL;
1057
1058 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1059 struct stat file_stat;
1060 struct dirent **dir_entries = NULL;
1061 int dir_entries_nb;
1062 int dir_entries_it;
1063
1064 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001065 ha_alert("Cannot open configuration file/directory %s : %s\n",
1066 wl->s,
1067 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001068 exit(1);
1069 }
1070
1071 if (!S_ISDIR(file_stat.st_mode))
1072 continue;
1073
1074 /* from this point wl->s is a directory */
1075
1076 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1077 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001078 ha_alert("Cannot open configuration directory %s : %s\n",
1079 wl->s,
1080 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001081 exit(1);
1082 }
1083
1084 /* for each element in the directory wl->s */
1085 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1086 struct dirent *dir_entry = dir_entries[dir_entries_it];
1087 char *filename = NULL;
1088 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1089
1090 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001091 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001092 */
1093 if (dir_entry->d_name[0] == '.' ||
1094 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1095 goto next_dir_entry;
1096
1097 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001098 ha_alert("Cannot load configuration files %s : out of memory.\n",
1099 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001100 exit(1);
1101 }
1102
1103 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001104 ha_alert("Cannot open configuration file %s : %s\n",
1105 wl->s,
1106 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001107 exit(1);
1108 }
1109
1110 /* don't add anything else than regular file in cfg_cfgfiles
1111 * this way we avoid loops
1112 */
1113 if (!S_ISREG(file_stat.st_mode))
1114 goto next_dir_entry;
1115
1116 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001117 ha_alert("Cannot load configuration files %s : %s\n",
1118 filename,
1119 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001120 exit(1);
1121 }
1122
1123next_dir_entry:
1124 free(filename);
1125 free(dir_entry);
1126 }
1127
1128 free(dir_entries);
1129
1130 /* remove the current directory (wl) from cfg_cfgfiles */
1131 free(wl->s);
1132 LIST_DEL(&wl->list);
1133 free(wl);
1134 }
1135
1136 free(err);
1137}
1138
Willy Tarreaubaaee002006-06-26 02:48:02 +02001139/*
William Lallemand73b85e72017-06-01 17:38:51 +02001140 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001141 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001142 * Return an allocated copy of argv
1143 */
1144
1145static char **copy_argv(int argc, char **argv)
1146{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001147 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001148
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02001149 newargv = calloc(argc + 2, sizeof(*newargv));
William Lallemand73b85e72017-06-01 17:38:51 +02001150 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001151 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001152 return NULL;
1153 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001154 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001155
William Lallemanddf6c5a82020-06-04 17:40:23 +02001156 /* first copy argv[0] */
1157 *newargv++ = *argv++;
1158 argc--;
1159
1160 while (argc > 0) {
1161 if (**argv != '-') {
1162 /* non options are copied but will fail in the argument parser */
1163 *newargv++ = *argv++;
1164 argc--;
1165
1166 } else {
1167 char *flag;
1168
1169 flag = *argv + 1;
1170
1171 if (flag[0] == '-' && flag[1] == 0) {
1172 /* "--\0" copy every arguments till the end of argv */
1173 *newargv++ = *argv++;
1174 argc--;
1175
1176 while (argc > 0) {
1177 *newargv++ = *argv++;
1178 argc--;
1179 }
1180 } else {
1181 switch (*flag) {
1182 case 's':
1183 /* -sf / -st and their parameters are ignored */
1184 if (flag[1] == 'f' || flag[1] == 't') {
1185 argc--;
1186 argv++;
1187 /* The list can't contain a negative value since the only
1188 way to know the end of this list is by looking for the
1189 next option or the end of the options */
1190 while (argc > 0 && argv[0][0] != '-') {
1191 argc--;
1192 argv++;
1193 }
William Lallemand398da622020-09-02 16:12:23 +02001194 } else {
1195 argc--;
1196 argv++;
1197
William Lallemanddf6c5a82020-06-04 17:40:23 +02001198 }
1199 break;
1200
1201 case 'x':
1202 /* this option and its parameter are ignored */
1203 argc--;
1204 argv++;
1205 if (argc > 0) {
1206 argc--;
1207 argv++;
1208 }
1209 break;
1210
1211 case 'C':
1212 case 'n':
1213 case 'm':
1214 case 'N':
1215 case 'L':
1216 case 'f':
1217 case 'p':
1218 case 'S':
1219 /* these options have only 1 parameter which must be copied and can start with a '-' */
1220 *newargv++ = *argv++;
1221 argc--;
1222 if (argc == 0)
1223 goto error;
1224 *newargv++ = *argv++;
1225 argc--;
1226 break;
1227 default:
1228 /* for other options just copy them without parameters, this is also done
1229 * for options like "--foo", but this will fail in the argument parser.
1230 * */
1231 *newargv++ = *argv++;
1232 argc--;
1233 break;
1234 }
William Lallemand73b85e72017-06-01 17:38:51 +02001235 }
1236 }
William Lallemand73b85e72017-06-01 17:38:51 +02001237 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001238
William Lallemanddf6c5a82020-06-04 17:40:23 +02001239 return retargv;
1240
1241error:
1242 free(retargv);
1243 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001244}
1245
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001246
1247/* Performs basic random seed initialization. The main issue with this is that
1248 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1249 * which means that there will only be 4 billion possible random sequences once
1250 * srandom() is called, regardless of the internal state. Not calling it is
1251 * even worse as we'll always produce the same randoms sequences. What we do
1252 * here is to create an initial sequence from various entropy sources, hash it
1253 * using SHA1 and keep the resulting 160 bits available globally.
1254 *
1255 * We initialize the current process with the first 32 bits before starting the
1256 * polling loop, where all this will be changed to have process specific and
1257 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001258 *
1259 * Before starting threads, it's still possible to call random() as srandom()
1260 * is initialized from this, but after threads and/or processes are started,
1261 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001262 */
1263static void ha_random_boot(char *const *argv)
1264{
1265 unsigned char message[256];
1266 unsigned char *m = message;
1267 struct timeval tv;
1268 blk_SHA_CTX ctx;
1269 unsigned long l;
1270 int fd;
1271 int i;
1272
1273 /* start with current time as pseudo-random seed */
1274 gettimeofday(&tv, NULL);
1275 write_u32(m, tv.tv_sec); m += 4;
1276 write_u32(m, tv.tv_usec); m += 4;
1277
1278 /* PID and PPID add some OS-based randomness */
1279 write_u16(m, getpid()); m += 2;
1280 write_u16(m, getppid()); m += 2;
1281
1282 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1283 fd = open("/dev/urandom", O_RDONLY);
1284 if (fd >= 0) {
1285 i = read(fd, m, 20);
1286 if (i > 0)
1287 m += i;
1288 close(fd);
1289 }
1290
1291 /* take up to 160 bits bytes from openssl (non-blocking) */
1292#ifdef USE_OPENSSL
1293 if (RAND_bytes(m, 20) == 1)
1294 m += 20;
1295#endif
1296
1297 /* take 160 bits from existing random in case it was already initialized */
1298 for (i = 0; i < 5; i++) {
1299 write_u32(m, random());
1300 m += 4;
1301 }
1302
1303 /* stack address (benefit form operating system's ASLR) */
1304 l = (unsigned long)&m;
1305 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1306
1307 /* argv address (benefit form operating system's ASLR) */
1308 l = (unsigned long)&argv;
1309 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1310
1311 /* use tv_usec again after all the operations above */
1312 gettimeofday(&tv, NULL);
1313 write_u32(m, tv.tv_usec); m += 4;
1314
1315 /*
1316 * At this point, ~84-92 bytes have been used
1317 */
1318
1319 /* finish with the hostname */
1320 strncpy((char *)m, hostname, message + sizeof(message) - m);
1321 m += strlen(hostname);
1322
1323 /* total message length */
1324 l = m - message;
1325
1326 memset(&ctx, 0, sizeof(ctx));
1327 blk_SHA1_Init(&ctx);
1328 blk_SHA1_Update(&ctx, message, l);
1329 blk_SHA1_Final(boot_seed, &ctx);
1330
1331 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001332 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001333}
1334
Willy Tarreau5a023f02019-03-01 14:19:31 +01001335/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1336 * setting, and returns it. It may return -1 meaning "unlimited" if some
1337 * unlimited proxies have been found and the global.maxconn value is not yet
1338 * set. It may also return a value greater than maxconn if it's not yet set.
1339 * Note that a value of zero means there is no need for pipes. -1 is never
1340 * returned if global.maxconn is valid.
1341 */
1342static int compute_ideal_maxpipes()
1343{
1344 struct proxy *cur;
1345 int nbfe = 0, nbbe = 0;
1346 int unlimited = 0;
1347 int pipes;
1348 int max;
1349
1350 for (cur = proxies_list; cur; cur = cur->next) {
1351 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1352 if (cur->cap & PR_CAP_FE) {
1353 max = cur->maxconn;
1354 nbfe += max;
1355 if (!max) {
1356 unlimited = 1;
1357 break;
1358 }
1359 }
1360 if (cur->cap & PR_CAP_BE) {
1361 max = cur->fullconn ? cur->fullconn : global.maxconn;
1362 nbbe += max;
1363 if (!max) {
1364 unlimited = 1;
1365 break;
1366 }
1367 }
1368 }
1369 }
1370
1371 pipes = MAX(nbfe, nbbe);
1372 if (global.maxconn) {
1373 if (pipes > global.maxconn || unlimited)
1374 pipes = global.maxconn;
1375 } else if (unlimited) {
1376 pipes = -1;
1377 }
1378
1379 return pipes >= 4 ? pipes / 4 : pipes;
1380}
1381
Willy Tarreauac350932019-03-01 15:43:14 +01001382/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1383 * rlimits and computes an ideal maxconn. It's meant to be called only when
1384 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001385 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1386 * default 100) is returned as it is expected that it will even run on tight
1387 * environments, and will maintain compatibility with previous packages that
1388 * used to rely on this value as the default one. The system will emit a
1389 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001390 */
1391static int compute_ideal_maxconn()
1392{
1393 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1394 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1395 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001396 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001397 int maxconn;
1398
1399 /* we have to take into account these elements :
1400 * - number of engine_fds, which inflates the number of FD needed per
1401 * connection by this number.
1402 * - number of pipes per connection on average : for the unlimited
1403 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1404 * fixed value of 2*pipes.
1405 * - two FDs per connection
1406 */
1407
1408 /* subtract listeners and checks */
1409 remain -= global.maxsock;
1410
Willy Tarreau3f200852019-03-14 19:13:17 +01001411 /* one epoll_fd/kqueue_fd per thread */
1412 remain -= global.nbthread;
1413
1414 /* one wake-up pipe (2 fd) per thread */
1415 remain -= 2 * global.nbthread;
1416
Willy Tarreauac350932019-03-01 15:43:14 +01001417 /* Fixed pipes values : we only subtract them if they're not larger
1418 * than the remaining FDs because pipes are optional.
1419 */
1420 if (pipes >= 0 && pipes * 2 < remain)
1421 remain -= pipes * 2;
1422
1423 if (pipes < 0) {
1424 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1425 * = maxconn * (2 + 0.5 + engine_fds)
1426 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1427 */
1428 maxconn = 2 * remain / (5 + 2 * engine_fds);
1429 } else {
1430 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1431 * = maxconn * (2 + engine_fds)
1432 */
1433 maxconn = remain / (2 + engine_fds);
1434 }
1435
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001436 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001437}
1438
Willy Tarreaua409f302020-03-10 17:08:53 +01001439/* computes the estimated maxsock value for the given maxconn based on the
1440 * possibly set global.maxpipes and existing partial global.maxsock. It may
1441 * temporarily change global.maxconn for the time needed to propagate the
1442 * computations, and will reset it.
1443 */
1444static int compute_ideal_maxsock(int maxconn)
1445{
1446 int maxpipes = global.maxpipes;
1447 int maxsock = global.maxsock;
1448
1449
1450 if (!maxpipes) {
1451 int old_maxconn = global.maxconn;
1452
1453 global.maxconn = maxconn;
1454 maxpipes = compute_ideal_maxpipes();
1455 global.maxconn = old_maxconn;
1456 }
1457
1458 maxsock += maxconn * 2; /* each connection needs two sockets */
1459 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1460 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1461 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1462
1463 /* compute fd used by async engines */
1464 if (global.ssl_used_async_engines) {
1465 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1466
1467 maxsock += maxconn * sides * global.ssl_used_async_engines;
1468 }
1469 return maxsock;
1470}
1471
Willy Tarreau304e17e2020-03-10 17:54:54 +01001472/* Tests if it is possible to set the current process' RLIMIT_NOFILE to
1473 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1474 * value is accepted, non-zero otherwise. This is used to determine if an
1475 * automatic limit may be applied or not. When it is not, the caller knows that
1476 * the highest we can do is the rlim_max at boot. In case of error, we return
1477 * that the setting is possible, so that we defer the error processing to the
1478 * final stage in charge of enforcing this.
1479 */
1480static int check_if_maxsock_permitted(int maxsock)
1481{
1482 struct rlimit orig_limit, test_limit;
1483 int ret;
1484
1485 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1486 return 1;
1487
1488 /* don't go further if we can't even set to what we have */
1489 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1490 return 1;
1491
1492 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1493 test_limit.rlim_cur = test_limit.rlim_max;
1494 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1495
1496 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1497 return 1;
1498
1499 return ret == 0;
1500}
1501
1502
William Lallemand73b85e72017-06-01 17:38:51 +02001503/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001504 * This function initializes all the necessary variables. It only returns
1505 * if everything is OK. If something fails, it exits.
1506 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001507static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001508{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001509 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001510 char *tmp;
1511 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001512 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001513 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001514 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001515 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001516 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001517 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001518 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001519 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001520
Christopher Faulete3a5e352017-10-24 13:53:54 +02001521 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001522 old_argv = copy_argv(argc, argv);
1523 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001524 ha_alert("failed to copy argv.\n");
1525 exit(1);
1526 }
William Lallemand73b85e72017-06-01 17:38:51 +02001527
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001528 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001529 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001530 exit(1);
1531 }
David du Colombier7af46052012-05-16 14:16:48 +02001532
Emeric Brun2b920a12010-09-23 18:30:22 +02001533 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1534 * the string in case of truncation, and at least FreeBSD appears not to do
1535 * it.
1536 */
1537 memset(hostname, 0, sizeof(hostname));
1538 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001539
1540 if ((localpeer = strdup(hostname)) == NULL) {
1541 ha_alert("Cannot allocate memory for local peer.\n");
1542 exit(EXIT_FAILURE);
1543 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001544 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001545
William Lallemand24c928c2020-01-14 17:58:18 +01001546 /* we were in mworker mode, we should restart in mworker mode */
1547 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1548 global.mode |= MODE_MWORKER;
1549
Willy Tarreaubaaee002006-06-26 02:48:02 +02001550 /*
1551 * Initialize the previously static variables.
1552 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001553
Willy Tarreau173d9952018-01-26 21:48:23 +01001554 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001555 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001556
Willy Tarreaubaaee002006-06-26 02:48:02 +02001557
1558#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001559 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001560#endif
1561
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001562 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001563 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001564 start_date = now;
1565
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001566 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001567
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001568 if (init_acl() != 0)
1569 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001570
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001571 /* Initialise lua. */
1572 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001573
Christopher Fauletff2613e2016-11-09 11:36:17 +01001574 /* Initialize process vars */
1575 vars_init(&global.vars, SCOPE_PROC);
1576
Willy Tarreau43b78992009-01-25 15:42:27 +01001577 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001578#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001579 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001580#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001581#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001582 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001583#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001584#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001585 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001586#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001587#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001588 global.tune.options |= GTUNE_USE_EVPORTS;
1589#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001590#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001591 global.tune.options |= GTUNE_USE_SPLICE;
1592#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001593#if defined(USE_GETADDRINFO)
1594 global.tune.options |= GTUNE_USE_GAI;
1595#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001596#if defined(SO_REUSEPORT)
1597 global.tune.options |= GTUNE_USE_REUSEPORT;
1598#endif
Willy Tarreau76cc6992020-07-01 18:49:24 +02001599#ifdef USE_THREAD
1600 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
1601#endif
William Dauchya5194602020-03-28 19:29:58 +01001602 global.tune.options |= GTUNE_STRICT_LIMITS;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001603
1604 pid = getpid();
1605 progname = *argv;
1606 while ((tmp = strchr(progname, '/')) != NULL)
1607 progname = tmp + 1;
1608
Kevinm48936af2010-12-22 16:08:21 +00001609 /* the process name is used for the logs only */
Eric Salama7cea6062020-10-02 11:58:19 +02001610 chunk_initlen(&global.log_tag, strdup(progname), strlen(progname), strlen(progname));
1611 if (b_orig(&global.log_tag) == NULL) {
1612 chunk_destroy(&global.log_tag);
1613 ha_alert("Cannot allocate memory for log_tag.\n");
1614 exit(EXIT_FAILURE);
1615 }
Kevinm48936af2010-12-22 16:08:21 +00001616
Willy Tarreaubaaee002006-06-26 02:48:02 +02001617 argc--; argv++;
1618 while (argc > 0) {
1619 char *flag;
1620
1621 if (**argv == '-') {
1622 flag = *argv+1;
1623
1624 /* 1 arg */
1625 if (*flag == 'v') {
1626 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001627 if (flag[1] == 'v') /* -vv */
1628 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001629 exit(0);
1630 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001631#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001632 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001633 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001634#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001635#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001636 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001637 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001638#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001639#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001640 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001641 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001642#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001643#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001644 else if (*flag == 'd' && flag[1] == 'v')
1645 global.tune.options &= ~GTUNE_USE_EVPORTS;
1646#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001647#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001648 else if (*flag == 'd' && flag[1] == 'S')
1649 global.tune.options &= ~GTUNE_USE_SPLICE;
1650#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001651#if defined(USE_GETADDRINFO)
1652 else if (*flag == 'd' && flag[1] == 'G')
1653 global.tune.options &= ~GTUNE_USE_GAI;
1654#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001655#if defined(SO_REUSEPORT)
1656 else if (*flag == 'd' && flag[1] == 'R')
1657 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1658#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001659 else if (*flag == 'd' && flag[1] == 'V')
1660 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001661 else if (*flag == 'V')
1662 arg_mode |= MODE_VERBOSE;
1663 else if (*flag == 'd' && flag[1] == 'b')
1664 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001665 else if (*flag == 'd' && flag[1] == 'W')
1666 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001667 else if (*flag == 'd' && flag[1] == 'M')
1668 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001669 else if (*flag == 'd' && flag[1] == 'r')
1670 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001671 else if (*flag == 'd')
1672 arg_mode |= MODE_DEBUG;
1673 else if (*flag == 'c')
1674 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001675 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001676 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001677 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001678 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001679#if defined(USE_SYSTEMD)
1680 global.tune.options |= GTUNE_USE_SYSTEMD;
1681#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001682 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 +01001683 usage(progname);
1684#endif
1685 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001686 else if (*flag == 'W')
1687 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001688 else if (*flag == 'q')
1689 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001690 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001691 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001692 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001693 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001694 }
William Lallemand4fc09692017-06-19 16:37:19 +02001695 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001696 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001697 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001698
Olivier Houchardf73629d2017-04-05 22:33:04 +02001699 argv++;
1700 argc--;
1701 }
William Lallemande7361152018-10-26 14:47:36 +02001702 else if (*flag == 'S') {
1703 struct wordlist *c;
1704
William Lallemanda6b32492020-06-04 23:49:20 +02001705 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001706 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1707 usage(progname);
1708 }
1709 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1710 ha_alert("Cannot allocate memory\n");
1711 exit(EXIT_FAILURE);
1712 }
1713 LIST_ADD(&mworker_cli_conf, &c->list);
1714
1715 argv++;
1716 argc--;
1717 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001718 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1719 /* list of pids to finish ('f') or terminate ('t') */
1720
1721 if (flag[1] == 'f')
1722 oldpids_sig = SIGUSR1; /* finish then exit */
1723 else
1724 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001725 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001726 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001727 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1728 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001729 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001730 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001731 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001732 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001733 errno = 0;
1734 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1735 if (errno) {
1736 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1737 flag,
1738 *argv, strerror(errno));
1739 exit(1);
1740 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001741 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001742 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001743 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1744 flag, endptr);
1745 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001746 }
Chris Lane236062f2018-02-05 23:15:44 +00001747 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001748 if (oldpids[nb_oldpids] <= 0)
1749 usage(progname);
1750 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001751 }
1752 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001753 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1754 /* now that's a cfgfile list */
1755 argv++; argc--;
1756 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001757 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001758 ha_alert("Cannot load configuration file/directory %s : %s\n",
1759 *argv,
1760 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001761 exit(1);
1762 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001763 argv++; argc--;
1764 }
1765 break;
1766 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001767 else { /* >=2 args */
1768 argv++; argc--;
1769 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001770 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001771
1772 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001773 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001774 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001775 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001776 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001777 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001778 free(localpeer);
1779 if ((localpeer = strdup(*argv)) == NULL) {
1780 ha_alert("Cannot allocate memory for local peer.\n");
1781 exit(EXIT_FAILURE);
1782 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001783 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001784 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001785 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001786 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001787 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001788 ha_alert("Cannot load configuration file/directory %s : %s\n",
1789 *argv,
1790 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001791 exit(1);
1792 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001793 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001794 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001795 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001796 }
1797 }
1798 }
1799 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001800 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001801 argv++; argc--;
1802 }
1803
Christopher Faulete3a5e352017-10-24 13:53:54 +02001804 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001805 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001806
William Lallemand944e6192018-11-21 15:48:31 +01001807 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001808 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001809 global.mode |= MODE_MWORKER_WAIT;
1810 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001811 }
1812
1813 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1814 atexit_flag = 1;
1815 atexit(reexec_on_failure);
1816 }
1817
Willy Tarreau576132e2011-09-10 19:26:56 +02001818 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001819 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001820 exit(1);
1821 }
1822
Willy Tarreaubaaee002006-06-26 02:48:02 +02001823 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001824
1825 init_default_instance();
1826
William Lallemand944e6192018-11-21 15:48:31 +01001827 /* in wait mode, we don't try to read the configuration files */
1828 if (!(global.mode & MODE_MWORKER_WAIT)) {
Christopher Faulet33edd512021-01-12 18:57:38 +01001829 char *env_cfgfiles = NULL;
1830 int env_err = 0;
Willy Tarreauc4382422009-12-06 13:10:44 +01001831
William Lallemand944e6192018-11-21 15:48:31 +01001832 /* handle cfgfiles that are actually directories */
1833 cfgfiles_expand_directories();
1834
1835 if (LIST_ISEMPTY(&cfg_cfgfiles))
1836 usage(progname);
1837
1838
1839 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1840 int ret;
1841
Christopher Faulet33edd512021-01-12 18:57:38 +01001842 if (env_err == 0) {
1843 if (!memprintf(&env_cfgfiles, "%s%s%s",
1844 (env_cfgfiles ? env_cfgfiles : ""),
1845 (env_cfgfiles ? ";" : ""), wl->s))
1846 env_err = 1;
1847 }
William Lallemand7b302d82019-05-20 11:15:37 +02001848
William Lallemand944e6192018-11-21 15:48:31 +01001849 ret = readcfgfile(wl->s);
1850 if (ret == -1) {
1851 ha_alert("Could not open configuration file %s : %s\n",
1852 wl->s, strerror(errno));
Christopher Faulet33edd512021-01-12 18:57:38 +01001853 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001854 exit(1);
1855 }
1856 if (ret & (ERR_ABORT|ERR_FATAL))
1857 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1858 err_code |= ret;
Christopher Faulet33edd512021-01-12 18:57:38 +01001859 if (err_code & ERR_ABORT) {
1860 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001861 exit(1);
Christopher Faulet33edd512021-01-12 18:57:38 +01001862 }
Willy Tarreauc4382422009-12-06 13:10:44 +01001863 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001864
William Lallemand944e6192018-11-21 15:48:31 +01001865 /* do not try to resolve arguments nor to spot inconsistencies when
1866 * the configuration contains fatal errors caused by files not found
1867 * or failed memory allocations.
1868 */
1869 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1870 ha_alert("Fatal errors found in configuration.\n");
Christopher Faulet33edd512021-01-12 18:57:38 +01001871 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001872 exit(1);
1873 }
Christopher Faulet33edd512021-01-12 18:57:38 +01001874 if (env_err) {
1875 ha_alert("Could not allocate memory for HAPROXY_CFGFILES env variable\n");
1876 exit(1);
1877 }
1878 setenv("HAPROXY_CFGFILES", env_cfgfiles, 1);
1879 free(env_cfgfiles);
William Lallemand7b302d82019-05-20 11:15:37 +02001880
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001881 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001882 if (global.mode & MODE_MWORKER) {
1883 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001884 struct mworker_proc *tmproc;
1885
William Lallemand482f9a92019-04-12 16:15:00 +02001886 setenv("HAPROXY_MWORKER", "1", 1);
1887
William Lallemand16dd1b32018-11-19 18:46:18 +01001888 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1889
William Lallemandf3a86832019-04-01 11:29:58 +02001890 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001891 if (!tmproc) {
1892 ha_alert("Cannot allocate process structures.\n");
1893 exit(EXIT_FAILURE);
1894 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001895 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001896 tmproc->reloads = 0;
1897 tmproc->relative_pid = 0;
1898 tmproc->pid = pid;
1899 tmproc->timestamp = start_date.tv_sec;
1900 tmproc->ipc_fd[0] = -1;
1901 tmproc->ipc_fd[1] = -1;
1902
1903 proc_self = tmproc;
1904
1905 LIST_ADDQ(&proc_list, &tmproc->list);
1906 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001907
1908 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001909
William Lallemandf3a86832019-04-01 11:29:58 +02001910 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001911 if (!tmproc) {
1912 ha_alert("Cannot allocate process structures.\n");
1913 exit(EXIT_FAILURE);
1914 }
1915
William Lallemand8f7069a2019-04-12 16:09:23 +02001916 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001917 tmproc->pid = -1;
1918 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001919 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001920 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001921 tmproc->ipc_fd[0] = -1;
1922 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001923
1924 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1925 exit(EXIT_FAILURE);
1926 }
1927
1928 LIST_ADDQ(&proc_list, &tmproc->list);
1929 }
William Lallemand944e6192018-11-21 15:48:31 +01001930 }
1931 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1932 struct wordlist *it, *c;
1933
William Lallemand1b663612018-10-26 14:47:33 +02001934 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001935
William Lallemande7361152018-10-26 14:47:36 +02001936
William Lallemand550db6d2018-11-06 17:37:12 +01001937 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001938
William Lallemand550db6d2018-11-06 17:37:12 +01001939 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001940 ha_alert("Can't create the master's CLI.\n");
1941 exit(EXIT_FAILURE);
1942 }
William Lallemande7361152018-10-26 14:47:36 +02001943
William Lallemand550db6d2018-11-06 17:37:12 +01001944 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1945
1946 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1947 ha_alert("Can't create the master's CLI.\n");
1948 exit(EXIT_FAILURE);
1949 }
1950 LIST_DEL(&c->list);
1951 free(c->s);
1952 free(c);
1953 }
1954 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001955 }
1956
Willy Tarreauf42d7942020-10-20 11:54:49 +02001957 if (global.nbproc > 1 && !global.nbthread) {
1958 ha_warning("nbproc is deprecated!\n"
1959 " | For suffering many limitations, the 'nbproc' directive is now deprecated\n"
1960 " | and scheduled for removal in 2.5. Just comment it out: haproxy will use\n"
1961 " | threads and will run on all allocated processors. You may also switch to\n"
1962 " | 'nbthread %d' to keep the same number of processors. If you absolutely\n"
1963 " | want to run in multi-process mode, you can silence this warning by adding\n"
1964 " | 'nbthread 1', but then please report your use case to developers.\n",
1965 global.nbproc);
1966 }
1967
Willy Tarreaubb925012009-07-23 13:36:36 +02001968 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001969 for (px = proxies_list; px; px = px->next) {
1970 struct server *srv;
1971 struct post_proxy_check_fct *ppcf;
1972 struct post_server_check_fct *pscf;
1973
Christopher Fauletd5bd8242020-11-02 16:20:13 +01001974 if (px->disabled)
1975 continue;
1976
Christopher Fauletc1692962019-08-12 09:51:07 +02001977 list_for_each_entry(pscf, &post_server_check_list, list) {
1978 for (srv = px->srv; srv; srv = srv->next)
1979 err_code |= pscf->fct(srv);
1980 }
1981 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1982 err_code |= ppcf->fct(px);
1983 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001984 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001985 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001986 exit(1);
1987 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001988
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01001989 err_code |= pattern_finalize_config();
1990 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1991 ha_alert("Failed to finalize pattern config.\n");
1992 exit(1);
1993 }
Willy Tarreau0f936722019-04-11 14:47:08 +02001994
Willy Tarreau70060452015-12-14 12:46:07 +01001995 /* recompute the amount of per-process memory depending on nbproc and
1996 * the shared SSL cache size (allowed to exist in all processes).
1997 */
1998 if (global.rlimit_memmax_all) {
1999#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
2000 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
2001
2002 global.rlimit_memmax =
2003 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
2004 ssl_cache_bytes) / global.nbproc +
2005 ssl_cache_bytes + 1048575LL) / 1048576LL;
2006#else
2007 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
2008#endif
2009 }
2010
Willy Tarreaue5733232019-05-22 19:24:06 +02002011#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002012 err_code |= netns_init();
2013 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002014 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002015 exit(1);
2016 }
2017#endif
2018
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002019 /* Apply server states */
2020 apply_server_state();
2021
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002022 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002023 srv_compute_all_admin_states(px);
2024
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002025 /* Apply servers' configured address */
2026 err_code |= srv_init_addr();
2027 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002028 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002029 exit(1);
2030 }
2031
Willy Tarreau3eb10b82020-04-15 16:42:39 +02002032 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
2033 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
2034 exit(1);
2035 }
2036
Willy Tarreaubaaee002006-06-26 02:48:02 +02002037 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002038 struct peers *pr;
2039 struct proxy *px;
2040
Willy Tarreaubebd2122020-04-15 16:06:11 +02002041 if (warned & WARN_ANY)
2042 qfprintf(stdout, "Warnings were found.\n");
2043
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002044 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002045 if (pr->peers_fe)
2046 break;
2047
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002048 for (px = proxies_list; px; px = px->next)
Willy Tarreauc3914d42020-09-24 08:39:22 +02002049 if (!px->disabled && px->li_all)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002050 break;
2051
2052 if (pr || px) {
2053 /* At least one peer or one listener has been found */
2054 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02002055 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002056 }
2057 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2058 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002059 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002060
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002061 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002062 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002063
Willy Tarreaue6945732016-12-21 19:57:00 +01002064 list_for_each_entry(pcf, &post_check_list, list) {
2065 err_code |= pcf->fct();
2066 if (err_code & (ERR_ABORT|ERR_FATAL))
2067 exit(1);
2068 }
2069
Willy Tarreaubaaee002006-06-26 02:48:02 +02002070 if (cfg_maxconn > 0)
2071 global.maxconn = cfg_maxconn;
2072
Willy Tarreau8d687d82019-03-01 09:39:42 +01002073 if (global.stats_fe)
2074 global.maxsock += global.stats_fe->maxconn;
2075
2076 if (cfg_peers) {
2077 /* peers also need to bypass global maxconn */
2078 struct peers *p = cfg_peers;
2079
2080 for (p = cfg_peers; p; p = p->next)
2081 if (p->peers_fe)
2082 global.maxsock += p->peers_fe->maxconn;
2083 }
2084
Willy Tarreaubaaee002006-06-26 02:48:02 +02002085 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002086 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002087 global.pidfile = strdup(cfg_pidfile);
2088 }
2089
Willy Tarreaud0256482015-01-15 21:45:22 +01002090 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002091 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2092 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2093 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2094 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002095 *
2096 * If memmax is set, then it depends on which values are set. If
2097 * maxsslconn is set, we use memmax to determine how many cleartext
2098 * connections may be added, and set maxconn to the sum of the two.
2099 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2100 * the remaining amount of memory between memmax and the cleartext
2101 * connections. If neither are set, then it is considered that all
2102 * connections are SSL-capable, and maxconn is computed based on this,
2103 * then maxsslconn accordingly. We need to know if SSL is used on the
2104 * frontends, backends, or both, because when it's used on both sides,
2105 * we need twice the value for maxsslconn, but we only count the
2106 * handshake once since it is not performed on the two sides at the
2107 * same time (frontend-side is terminated before backend-side begins).
2108 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002109 * ssl_handshake_cost during its initialization. In any case, if
2110 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2111 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002112 */
Willy Tarreauac350932019-03-01 15:43:14 +01002113 ideal_maxconn = compute_ideal_maxconn();
2114
Willy Tarreaud0256482015-01-15 21:45:22 +01002115 if (!global.rlimit_memmax) {
2116 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002117 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002118 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2119 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2120 }
2121 }
2122#ifdef USE_OPENSSL
2123 else if (!global.maxconn && !global.maxsslconn &&
2124 (global.ssl_used_frontend || global.ssl_used_backend)) {
2125 /* memmax is set, compute everything automatically. Here we want
2126 * to ensure that all SSL connections will be served. We take
2127 * care of the number of sides where SSL is used, and consider
2128 * the worst case : SSL used on both sides and doing a handshake
2129 * simultaneously. Note that we can't have more than maxconn
2130 * handshakes at a time by definition, so for the worst case of
2131 * two SSL conns per connection, we count a single handshake.
2132 */
2133 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2134 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002135 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002136
2137 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2138 mem -= global.maxzlibmem;
2139 mem = mem * MEM_USABLE_RATIO;
2140
Willy Tarreau304e17e2020-03-10 17:54:54 +01002141 /* Principle: we test once to set maxconn according to the free
2142 * memory. If it results in values the system rejects, we try a
2143 * second time by respecting rlim_fd_max. If it fails again, we
2144 * go back to the initial value and will let the final code
2145 * dealing with rlimit report the error. That's up to 3 attempts.
2146 */
2147 do {
2148 global.maxconn = mem /
2149 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2150 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2151 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002152
Willy Tarreau304e17e2020-03-10 17:54:54 +01002153 if (retried == 1)
2154 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2155 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002156#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002157 if (global.maxconn > SYSTEM_MAXCONN)
2158 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002159#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002160 global.maxsslconn = sides * global.maxconn;
2161
2162 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2163 break;
2164 } while (retried++ < 2);
2165
Willy Tarreaud0256482015-01-15 21:45:22 +01002166 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2167 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2168 global.maxconn, global.maxsslconn);
2169 }
2170 else if (!global.maxsslconn &&
2171 (global.ssl_used_frontend || global.ssl_used_backend)) {
2172 /* memmax and maxconn are known, compute maxsslconn automatically.
2173 * maxsslconn being forced, we don't know how many of it will be
2174 * on each side if both sides are being used. The worst case is
2175 * when all connections use only one SSL instance because
2176 * handshakes may be on two sides at the same time.
2177 */
2178 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2179 int64_t mem = global.rlimit_memmax * 1048576ULL;
2180 int64_t sslmem;
2181
2182 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2183 mem -= global.maxzlibmem;
2184 mem = mem * MEM_USABLE_RATIO;
2185
Willy Tarreau87b09662015-04-03 00:22:06 +02002186 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002187 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2188 global.maxsslconn = round_2dig(global.maxsslconn);
2189
2190 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002191 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2192 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2193 "without SSL is %d, but %d was found and SSL is in use.\n",
2194 global.rlimit_memmax,
2195 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2196 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002197 exit(1);
2198 }
2199
2200 if (global.maxsslconn > sides * global.maxconn)
2201 global.maxsslconn = sides * global.maxconn;
2202
2203 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2204 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2205 }
2206#endif
2207 else if (!global.maxconn) {
2208 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2209 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2210 int64_t mem = global.rlimit_memmax * 1048576ULL;
2211 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002212 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002213
2214 if (global.ssl_used_frontend || global.ssl_used_backend)
2215 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2216
2217 mem -= global.maxzlibmem;
2218 mem = mem * MEM_USABLE_RATIO;
2219
2220 clearmem = mem;
2221 if (sides)
2222 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2223
Willy Tarreau304e17e2020-03-10 17:54:54 +01002224 /* Principle: we test once to set maxconn according to the free
2225 * memory. If it results in values the system rejects, we try a
2226 * second time by respecting rlim_fd_max. If it fails again, we
2227 * go back to the initial value and will let the final code
2228 * dealing with rlimit report the error. That's up to 3 attempts.
2229 */
2230 do {
2231 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2232 if (retried == 1)
2233 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2234 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002235#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002236 if (global.maxconn > SYSTEM_MAXCONN)
2237 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002238#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002239
Willy Tarreau304e17e2020-03-10 17:54:54 +01002240 if (clearmem <= 0 || !global.maxconn) {
2241 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2242 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2243 "is %d, but %d was found.\n",
2244 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002245 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002246 global.maxsslconn);
2247 exit(1);
2248 }
2249
2250 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2251 break;
2252 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002253
2254 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2255 if (sides && global.maxsslconn > sides * global.maxconn) {
2256 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2257 "to be limited to %d. Better reduce global.maxsslconn to get more "
2258 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2259 }
2260 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2261 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002262 }
2263
Willy Tarreaua409f302020-03-10 17:08:53 +01002264 global.maxsock = compute_ideal_maxsock(global.maxconn);
2265 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002266 if (!global.maxpipes)
2267 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002268
Olivier Houchard88698d92019-04-16 19:07:22 +02002269 /* update connection pool thresholds */
2270 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2271 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2272
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002273 proxy_adjust_all_maxconn();
2274
Willy Tarreau1db37712007-06-03 17:16:49 +02002275 if (global.tune.maxpollevents <= 0)
2276 global.tune.maxpollevents = MAX_POLL_EVENTS;
2277
Willy Tarreau20076a02021-03-10 11:06:26 +01002278 if (global.tune.runqueue_depth <= 0) {
2279 /* tests on various thread counts from 1 to 64 have shown an
2280 * optimal queue depth following roughly 1/sqrt(threads).
2281 */
2282 int s = my_flsl(global.nbthread);
2283 s += (global.nbthread / s); // roughly twice the sqrt.
2284 global.tune.runqueue_depth = RUNQUEUE_DEPTH * 2 / s;
2285 }
Olivier Houchard1599b802018-05-24 18:59:04 +02002286
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002287 if (global.tune.recv_enough == 0)
2288 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2289
Willy Tarreau27a674e2009-08-17 07:23:33 +02002290 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2291 global.tune.maxrewrite = global.tune.bufsize / 2;
2292
Willy Tarreaubaaee002006-06-26 02:48:02 +02002293 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2294 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002295 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002296 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2297 }
2298
William Lallemand095ba4c2017-06-01 17:38:50 +02002299 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002300 /* command line daemon mode inhibits foreground and debug modes mode */
2301 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002302 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002303 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002304
2305 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002306
William Lallemand095ba4c2017-06-01 17:38:50 +02002307 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002308 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002309 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002310 }
2311
William Lallemand095ba4c2017-06-01 17:38:50 +02002312 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002313 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002314 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 +02002315 global.nbproc = 1;
2316 }
2317
2318 if (global.nbproc < 1)
2319 global.nbproc = 1;
2320
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002321 if (global.nbthread < 1)
2322 global.nbthread = 1;
2323
Christopher Faulet3ef26392017-08-29 16:46:57 +02002324 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002325 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002326 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002327 exit(1);
2328 }
2329
Christopher Faulet96d44832017-11-14 22:02:30 +01002330 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002331 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002332 exit(1);
2333 }
2334
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002335 /*
2336 * Note: we could register external pollers here.
2337 * Built-in pollers have been registered before main().
2338 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002339
Willy Tarreau43b78992009-01-25 15:42:27 +01002340 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002341 disable_poller("kqueue");
2342
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002343 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2344 disable_poller("evports");
2345
Willy Tarreau43b78992009-01-25 15:42:27 +01002346 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002347 disable_poller("epoll");
2348
Willy Tarreau43b78992009-01-25 15:42:27 +01002349 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002350 disable_poller("poll");
2351
Willy Tarreau43b78992009-01-25 15:42:27 +01002352 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002353 disable_poller("select");
2354
2355 /* Note: we could disable any poller by name here */
2356
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002357 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002358 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002359 fprintf(stderr, "\n");
2360 list_filters(stderr);
2361 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002362
Willy Tarreau4f60f162007-04-08 16:39:58 +02002363 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002364 ha_alert("No polling mechanism available.\n"
2365 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2366 " is too low on this platform to support maxconn and the number of listeners\n"
2367 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2368 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2369 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2370 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2371 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2372 " check build settings using 'haproxy -vv'.\n\n",
2373 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002374 exit(1);
2375 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002376 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2377 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002378 }
2379
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002380 if (!global.node)
2381 global.node = strdup(hostname);
2382
Willy Tarreau02b092f2020-10-07 18:36:54 +02002383 /* stop disabled proxies */
2384 for (px = proxies_list; px; px = px->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02002385 if (px->disabled)
Willy Tarreau02b092f2020-10-07 18:36:54 +02002386 stop_proxy(px);
2387 }
2388
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002389 if (!hlua_post_init())
2390 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002391
Maxime de Roucy0f503922016-05-13 23:52:55 +02002392 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002393}
2394
Simon Horman6fb82592011-07-15 13:14:11 +09002395static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002396{
Simon Hormanac821422011-07-15 13:14:09 +09002397 struct acl_term_suite *suite, *suiteb;
2398 struct acl_term *term, *termb;
2399
Simon Horman6fb82592011-07-15 13:14:11 +09002400 if (!cond)
2401 return;
2402
2403 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2404 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2405 LIST_DEL(&term->list);
2406 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002407 }
Simon Horman6fb82592011-07-15 13:14:11 +09002408 LIST_DEL(&suite->list);
2409 free(suite);
2410 }
2411
2412 free(cond);
2413}
2414
Christopher Fauletcb550132019-12-17 11:25:46 +01002415static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002416{
Christopher Fauletcb550132019-12-17 11:25:46 +01002417 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002418
Christopher Fauletcb550132019-12-17 11:25:46 +01002419 list_for_each_entry_safe(rule, ruleb, rules, list) {
2420 LIST_DEL(&rule->list);
2421 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002422 if (rule->release_ptr)
2423 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002424 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002425 }
2426}
2427
Simon Horman6fb82592011-07-15 13:14:11 +09002428static void deinit_stick_rules(struct list *rules)
2429{
2430 struct sticking_rule *rule, *ruleb;
2431
2432 list_for_each_entry_safe(rule, ruleb, rules, list) {
2433 LIST_DEL(&rule->list);
2434 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002435 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002436 free(rule);
2437 }
2438}
2439
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002440void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002441{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002442 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002443 struct cap_hdr *h,*h_next;
2444 struct server *s,*s_next;
2445 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002446 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002447 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002448 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002449 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002450 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002451 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002452 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002453 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002454 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002455 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002456 struct build_opts_str *bol, *bolb;
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002457 struct post_deinit_fct *pdf, *pdfb;
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002458 struct proxy_deinit_fct *pxdf, *pxdfb;
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002459 struct server_deinit_fct *srvdf, *srvdfb;
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002460 struct per_thread_init_fct *tif, *tifb;
2461 struct per_thread_deinit_fct *tdf, *tdfb;
2462 struct per_thread_alloc_fct *taf, *tafb;
2463 struct per_thread_free_fct *tff, *tffb;
Tim Duesterhus34bef072020-07-04 11:49:50 +02002464 struct post_server_check_fct *pscf, *pscfb;
Tim Duesterhusfc854942020-09-10 19:46:42 +02002465 struct post_check_fct *pcf, *pcfb;
Tim Duesterhus53508d62020-09-10 19:46:40 +02002466 struct post_proxy_check_fct *ppcf, *ppcfb;
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002467 int cur_fd;
2468
2469 /* At this point the listeners state is weird:
2470 * - most listeners are still bound and referenced in their protocol
2471 * - some might be zombies that are not in their proto anymore, but
2472 * still appear in their proxy's listeners with a valid FD.
2473 * - some might be stopped and still appear in their proxy as FD #-1
2474 * - among all of them, some might be inherited hence shared and we're
2475 * not allowed to pause them or whatever, we must just close them.
2476 * - finally some are not listeners (pipes, logs, stdout, etc) and
2477 * must be left intact.
2478 *
2479 * The safe way to proceed is to unbind (and close) whatever is not yet
2480 * unbound so that no more receiver/listener remains alive. Then close
2481 * remaining listener FDs, which correspond to zombie listeners (those
2482 * belonging to disabled proxies that were in another process).
2483 * objt_listener() would be cleaner here but not converted yet.
2484 */
2485 protocol_unbind_all();
2486
2487 for (cur_fd = 0; cur_fd < global.maxsock; cur_fd++) {
Willy Tarreau1a3770c2020-10-14 12:13:51 +02002488 if (!fdtab || !fdtab[cur_fd].owner)
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002489 continue;
2490
Willy Tarreaua74cb382020-10-15 21:29:49 +02002491 if (fdtab[cur_fd].iocb == &sock_accept_iocb) {
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002492 struct listener *l = fdtab[cur_fd].owner;
2493
2494 BUG_ON(l->state != LI_INIT);
2495 unbind_listener(l);
2496 }
2497 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002498
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002499 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002500 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002501 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002502 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002503 free(p->cookie_name);
2504 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002505 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002506 free(p->lbprm.arg_str);
Christopher Faulet3dab6c02021-02-12 09:28:13 +01002507 free(p->server_state_file_name);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002508 free(p->capture_name);
2509 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002510 free(p->rdp_cookie_name);
William Lallemandefc5a9d2020-08-07 14:48:37 +02002511 free(p->invalid_rep);
2512 free(p->invalid_req);
Amaury Denoyelle7edf20e2021-01-26 14:35:22 +01002513#if defined(CONFIG_HAP_TRANSPARENT)
2514 free(p->conn_src.bind_hdr_name);
2515#endif
Willy Tarreau62a61232013-04-12 18:13:46 +02002516 if (p->conf.logformat_string != default_http_log_format &&
2517 p->conf.logformat_string != default_tcp_log_format &&
2518 p->conf.logformat_string != clf_http_log_format)
2519 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002520
Willy Tarreau62a61232013-04-12 18:13:46 +02002521 free(p->conf.lfs_file);
2522 free(p->conf.uniqueid_format_string);
Tim Duesterhus18c63592020-07-04 11:49:42 +02002523 istfree(&p->header_unique_id);
Willy Tarreau62a61232013-04-12 18:13:46 +02002524 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002525 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2526 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002527
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002528 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2529 free(p->conf.logformat_sd_string);
2530 free(p->conf.lfsd_file);
2531
Willy Tarreaub80c2302007-11-30 20:51:32 +01002532 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2533 LIST_DEL(&cond->list);
2534 prune_acl_cond(cond);
2535 free(cond);
2536 }
2537
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002538 EXTRA_COUNTERS_FREE(p->extra_counters_fe);
2539 EXTRA_COUNTERS_FREE(p->extra_counters_be);
2540
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002541 /* build a list of unique uri_auths */
2542 if (!ua)
2543 ua = p->uri_auth;
2544 else {
2545 /* check if p->uri_auth is unique */
2546 for (uap = ua; uap; uap=uap->next)
2547 if (uap == p->uri_auth)
2548 break;
2549
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002550 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002551 /* add it, if it is */
2552 p->uri_auth->next = ua;
2553 ua = p->uri_auth;
2554 }
2555 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002556
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002557 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2558 LIST_DEL(&acl->list);
2559 prune_acl(acl);
2560 free(acl);
2561 }
2562
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002563 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2564 LIST_DEL(&srule->list);
2565 prune_acl_cond(srule->cond);
Tim Duesterhus826cf072020-07-04 11:49:44 +02002566 list_for_each_entry_safe(lf, lfb, &srule->expr, list) {
2567 LIST_DEL(&lf->list);
2568 release_sample_expr(lf->expr);
2569 free(lf->arg);
2570 free(lf);
2571 }
Tim Duesterhus6fb74a12020-07-04 11:49:43 +02002572 free(srule->file);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002573 free(srule->cond);
2574 free(srule);
2575 }
2576
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002577 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2578 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002579 if (rule->cond) {
2580 prune_acl_cond(rule->cond);
2581 free(rule->cond);
2582 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002583 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002584 free(rule);
2585 }
2586
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002587 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2588 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002589 if (rdr->cond) {
2590 prune_acl_cond(rdr->cond);
2591 free(rdr->cond);
2592 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002593 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002594 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2595 LIST_DEL(&lf->list);
2596 free(lf);
2597 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002598 free(rdr);
2599 }
2600
William Lallemand0f99e342011-10-12 17:50:54 +02002601 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2602 LIST_DEL(&log->list);
2603 free(log);
2604 }
2605
William Lallemand723b73a2012-02-08 16:37:49 +01002606 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2607 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002608 release_sample_expr(lf->expr);
2609 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002610 free(lf);
2611 }
2612
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002613 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2614 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002615 release_sample_expr(lf->expr);
2616 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002617 free(lf);
2618 }
2619
Tim Duesterhus79765782020-07-04 11:49:40 +02002620 list_for_each_entry_safe(lf, lfb, &p->format_unique_id, list) {
2621 LIST_DEL(&lf->list);
2622 release_sample_expr(lf->expr);
2623 free(lf->arg);
2624 free(lf);
2625 }
2626
Christopher Fauletcb550132019-12-17 11:25:46 +01002627 deinit_act_rules(&p->tcp_req.inspect_rules);
2628 deinit_act_rules(&p->tcp_rep.inspect_rules);
2629 deinit_act_rules(&p->tcp_req.l4_rules);
2630 deinit_act_rules(&p->tcp_req.l5_rules);
2631 deinit_act_rules(&p->http_req_rules);
2632 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002633 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002634
Simon Horman6fb82592011-07-15 13:14:11 +09002635 deinit_stick_rules(&p->storersp_rules);
2636 deinit_stick_rules(&p->sticking_rules);
2637
Willy Tarreaubaaee002006-06-26 02:48:02 +02002638 h = p->req_cap;
2639 while (h) {
2640 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002641 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002642 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002643 free(h);
2644 h = h_next;
2645 }/* end while(h) */
2646
2647 h = p->rsp_cap;
2648 while (h) {
2649 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002650 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002651 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002652 free(h);
2653 h = h_next;
2654 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002655
Willy Tarreaubaaee002006-06-26 02:48:02 +02002656 s = p->srv;
2657 while (s) {
2658 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002659
Dragan Dosen026ef572019-04-30 00:56:20 +02002660
Willy Tarreauf6562792019-05-07 19:05:35 +02002661 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002662
Willy Tarreaua534fea2008-08-03 12:19:50 +02002663 free(s->id);
2664 free(s->cookie);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002665 free(s->hostname);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002666 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002667 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002668 free(s->idle_conns);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002669 free(s->safe_conns);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002670 free(s->available_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002671 free(s->curr_idle_thr);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002672 free(s->resolvers_id);
Amaury Denoyelle2bf658c2021-04-20 16:48:22 +02002673 free(s->lb_nodes);
Willy Tarreau17d45382016-12-22 21:16:08 +01002674
Christopher Fauletf61f33a2020-03-27 18:55:49 +01002675 if (s->use_ssl == 1 || s->check.use_ssl == 1 || (s->proxy->options & PR_O_TCPCHK_SSL)) {
Willy Tarreau17d45382016-12-22 21:16:08 +01002676 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2677 xprt_get(XPRT_SSL)->destroy_srv(s);
2678 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002679 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002680
2681 list_for_each_entry(srvdf, &server_deinit_list, list)
2682 srvdf->fct(s);
2683
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002684 EXTRA_COUNTERS_FREE(s->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002685 free(s);
2686 s = s_next;
2687 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002688
Willy Tarreau4348fad2012-09-20 16:48:07 +02002689 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreau4348fad2012-09-20 16:48:07 +02002690 LIST_DEL(&l->by_fe);
2691 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002692 free(l->name);
2693 free(l->counters);
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002694
2695 EXTRA_COUNTERS_FREE(l->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002696 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002697 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002698
Willy Tarreau4348fad2012-09-20 16:48:07 +02002699 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002700 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002701 if (bind_conf->xprt->destroy_bind_conf)
2702 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002703 free(bind_conf->file);
2704 free(bind_conf->arg);
2705 LIST_DEL(&bind_conf->by_fe);
2706 free(bind_conf);
2707 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002708
Christopher Fauletd7c91962015-04-30 11:48:27 +02002709 flt_deinit(p);
2710
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002711 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2712 pxdf->fct(p);
2713
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002714 free(p->desc);
2715 free(p->fwdfor_hdr_name);
2716
Olivier Houchard3f795f72019-04-17 22:51:06 +02002717 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002718
Willy Tarreaubafbe012017-11-24 17:34:44 +01002719 pool_destroy(p->req_cap_pool);
2720 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002721 if (p->table)
2722 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002723
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002724 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002725 p = p->next;
Willy Tarreaucd10def2020-10-17 18:48:47 +02002726 HA_RWLOCK_DESTROY(&p0->lbprm.lock);
Willy Tarreauac66d6b2020-10-20 17:24:27 +02002727 HA_RWLOCK_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002728 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002729 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002730
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002731 while (ua) {
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002732 struct stat_scope *scope, *scopep;
2733
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002734 uap = ua;
2735 ua = ua->next;
2736
Willy Tarreaua534fea2008-08-03 12:19:50 +02002737 free(uap->uri_prefix);
2738 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002739 free(uap->node);
2740 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002741
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002742 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002743 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002744
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002745 scope = uap->scope;
2746 while (scope) {
2747 scopep = scope;
2748 scope = scope->next;
2749
2750 free(scopep->px_id);
2751 free(scopep);
2752 }
2753
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002754 free(uap);
2755 }
2756
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002757 userlist_free(userlist);
2758
David Carlier834cb2e2015-09-25 12:02:25 +01002759 cfg_unregister_sections();
2760
Christopher Faulet0132d062017-07-26 15:33:35 +02002761 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002762
Willy Tarreau05554e62016-12-21 20:46:26 +01002763 list_for_each_entry(pdf, &post_deinit_list, list)
2764 pdf->fct();
2765
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002766 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002767 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002768 free(global.chroot); global.chroot = NULL;
2769 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002770 free(global.node); global.node = NULL;
2771 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002772 free(oldpids); oldpids = NULL;
Tim Duesterhus9e0c2f32020-09-10 19:46:39 +02002773 free(old_argv); old_argv = NULL;
Dragan Dosen4f014152020-06-18 16:56:47 +02002774 free(localpeer); localpeer = NULL;
Christopher Faulet3dab6c02021-02-12 09:28:13 +01002775 free(global.server_state_base); global.server_state_base = NULL;
2776 free(global.server_state_file); global.server_state_file = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002777 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002778 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002779
William Lallemand0f99e342011-10-12 17:50:54 +02002780 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2781 LIST_DEL(&log->list);
2782 free(log);
2783 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002784 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002785 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002786 LIST_DEL(&wl->list);
2787 free(wl);
2788 }
2789
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002790 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2791 if (bol->must_free)
2792 free((void *)bol->str);
2793 LIST_DEL(&bol->list);
2794 free(bol);
2795 }
2796
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002797 list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
2798 LIST_DEL(&pxdf->list);
2799 free(pxdf);
2800 }
2801
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002802 list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
2803 LIST_DEL(&pdf->list);
2804 free(pdf);
2805 }
2806
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002807 list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
2808 LIST_DEL(&srvdf->list);
2809 free(srvdf);
2810 }
2811
Tim Duesterhusfc854942020-09-10 19:46:42 +02002812 list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
2813 LIST_DEL(&pcf->list);
2814 free(pcf);
2815 }
2816
Tim Duesterhus34bef072020-07-04 11:49:50 +02002817 list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
2818 LIST_DEL(&pscf->list);
2819 free(pscf);
2820 }
2821
Tim Duesterhus53508d62020-09-10 19:46:40 +02002822 list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
2823 LIST_DEL(&ppcf->list);
2824 free(ppcf);
2825 }
2826
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002827 list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
2828 LIST_DEL(&tif->list);
2829 free(tif);
2830 }
2831
2832 list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
2833 LIST_DEL(&tdf->list);
2834 free(tdf);
2835 }
2836
2837 list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
2838 LIST_DEL(&taf->list);
2839 free(taf);
2840 }
2841
2842 list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
2843 LIST_DEL(&tff->list);
2844 free(tff);
2845 }
2846
Christopher Fauletff2613e2016-11-09 11:36:17 +01002847 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002848 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002849 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002850} /* end deinit() */
2851
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002852__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002853{
2854 deinit();
2855 exit(status);
2856}
William Lallemand72160322018-11-06 17:37:16 +01002857
Willy Tarreau918ff602011-07-25 16:33:49 +02002858/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002859void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002860{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002861 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002862
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002863 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002864 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002865 wake_expired_tasks();
2866
William Lallemand1aab50b2018-06-07 09:46:01 +02002867 /* check if we caught some signals and process them in the
2868 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002869 if (signal_queue_len && tid == 0) {
2870 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002871 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002872 }
2873
2874 /* Process a few tasks */
2875 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002876
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002877 /* also stop if we failed to cleanly stop all tasks */
2878 if (killed > 1)
2879 break;
2880
Willy Tarreau10146c92015-04-13 20:44:19 +02002881 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002882 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002883 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002884 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002885 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002886 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2887 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002888 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002889 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002890 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002891 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002892 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002893 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002894
Willy Tarreau4f46a352020-03-23 09:27:28 +01002895 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002896 int i;
2897
2898 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002899 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2900 /* notify all threads that stopping was just set */
2901 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002902 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002903 wake_thread(i);
2904 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002905 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002906
2907 /* stop when there's nothing left to do */
2908 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002909 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2910 /* wake all threads waiting on jobs==0 */
2911 for (i = 0; i < global.nbthread; i++)
2912 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2913 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002914 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002915 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002916 }
2917
Willy Tarreauc49ba522019-12-11 08:12:23 +01002918 /* If we have to sleep, measure how long */
2919 next = wake ? TICK_ETERNITY : next_timer_expiry();
2920
Willy Tarreau58b458d2008-06-29 22:40:23 +02002921 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002922 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002923
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002924 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002925 }
2926}
2927
Christopher Faulet1d17c102017-08-29 15:38:48 +02002928static void *run_thread_poll_loop(void *data)
2929{
Willy Tarreau082b6282019-05-22 14:42:12 +02002930 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002931 struct per_thread_init_fct *ptif;
2932 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002933 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002934 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002935 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2936 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002937
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002938 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002939 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002940
Willy Tarreauf6178242019-05-21 19:46:58 +02002941#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002942#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002943 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002944#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002945 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002946#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002947#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002948 /* Now, initialize one thread init at a time. This is better since
2949 * some init code is a bit tricky and may release global resources
2950 * after reallocating them locally. This will also ensure there is
2951 * no race on file descriptors allocation.
2952 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002953#ifdef USE_THREAD
2954 pthread_mutex_lock(&init_mutex);
2955#endif
2956 /* The first thread must set the number of threads left */
2957 if (!init_left)
2958 init_left = global.nbthread;
2959 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002960
Christopher Faulet1d17c102017-08-29 15:38:48 +02002961 tv_update_date(-1,-1);
2962
Willy Tarreau082b6282019-05-22 14:42:12 +02002963 /* per-thread alloc calls performed here are not allowed to snoop on
2964 * other threads, so they are free to initialize at their own rhythm
2965 * as long as they act as if they were alone. None of them may rely
2966 * on resources initialized by the other ones.
2967 */
2968 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2969 if (!ptaf->fct()) {
2970 ha_alert("failed to allocate resources for thread %u.\n", tid);
2971 exit(1);
2972 }
2973 }
2974
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002975 /* per-thread init calls performed here are not allowed to snoop on
2976 * other threads, so they are free to initialize at their own rhythm
2977 * as long as they act as if they were alone.
2978 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002979 list_for_each_entry(ptif, &per_thread_init_list, list) {
2980 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002981 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002982 exit(1);
2983 }
2984 }
2985
Willy Tarreau71092822019-06-10 09:51:04 +02002986 /* enabling protocols will result in fd_insert() calls to be performed,
2987 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002988 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002989 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002990 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002991 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002992
Willy Tarreau34a150c2019-06-11 09:16:41 +02002993#ifdef USE_THREAD
2994 pthread_cond_broadcast(&init_cond);
2995 pthread_mutex_unlock(&init_mutex);
2996
2997 /* now wait for other threads to finish starting */
2998 pthread_mutex_lock(&init_mutex);
2999 while (init_left)
3000 pthread_cond_wait(&init_cond, &init_mutex);
3001 pthread_mutex_unlock(&init_mutex);
3002#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02003003
Willy Tarreaua45a8b52019-12-06 16:31:45 +01003004#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
3005 /* Let's refrain from using setuid executables. This way the impact of
3006 * an eventual vulnerability in a library remains limited. It may
3007 * impact external checks but who cares about them anyway ? In the
3008 * worst case it's possible to disable the option. Obviously we do this
3009 * in workers only. We can't hard-fail on this one as it really is
3010 * implementation dependent though we're interested in feedback, hence
3011 * the warning.
3012 */
3013 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
3014 static int warn_fail;
3015 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3016 ha_warning("Failed to disable setuid, please report to developers with detailed "
3017 "information about your operating system. You can silence this warning "
3018 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
3019 }
3020 }
3021#endif
3022
Willy Tarreaud96f1122019-12-03 07:07:36 +01003023#if defined(RLIMIT_NPROC)
3024 /* all threads have started, it's now time to prevent any new thread
3025 * or process from starting. Obviously we do this in workers only. We
3026 * can't hard-fail on this one as it really is implementation dependent
3027 * though we're interested in feedback, hence the warning.
3028 */
3029 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
3030 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
3031 static int warn_fail;
3032
3033 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3034 ha_warning("Failed to disable forks, please report to developers with detailed "
3035 "information about your operating system. You can silence this warning "
3036 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
3037 }
3038 }
3039#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003040 run_poll_loop();
3041
3042 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
3043 ptdf->fct();
3044
Willy Tarreau082b6282019-05-22 14:42:12 +02003045 list_for_each_entry(ptff, &per_thread_free_list, list)
3046 ptff->fct();
3047
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003048#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01003049 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003050 if (tid > 0)
3051 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003052#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003053 return NULL;
3054}
Christopher Faulet1d17c102017-08-29 15:38:48 +02003055
William Dauchyf9af9d72019-11-17 15:47:16 +01003056/* set uid/gid depending on global settings */
3057static void set_identity(const char *program_name)
3058{
3059 if (global.gid) {
3060 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
3061 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3062 " without 'uid'/'user' is generally useless.\n", program_name);
3063
3064 if (setgid(global.gid) == -1) {
3065 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
3066 protocol_unbind_all();
3067 exit(1);
3068 }
3069 }
3070
3071 if (global.uid && setuid(global.uid) == -1) {
3072 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
3073 protocol_unbind_all();
3074 exit(1);
3075 }
3076}
3077
Willy Tarreaubaaee002006-06-26 02:48:02 +02003078int main(int argc, char **argv)
3079{
3080 int err, retry;
3081 struct rlimit limit;
Willy Tarreau269ab312012-09-05 08:02:48 +02003082 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003083
Olivier Houchard5fa300d2018-02-03 15:15:21 +01003084 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003085
Willy Tarreauff9c9142019-02-07 10:39:36 +01003086 /* this can only safely be done here, though it's optimized away by
3087 * the compiler.
3088 */
3089 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3090 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3091 "HAProxy was built with value %d, please fix it and rebuild.\n",
3092 LONGBITS, MAX_PROCS);
3093 exit(1);
3094 }
3095
Willy Tarreaubf696402019-03-01 10:09:28 +01003096 /* take a copy of initial limits before we possibly change them */
3097 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau2bd0f812020-10-13 15:36:08 +02003098
3099 if (limit.rlim_max == RLIM_INFINITY)
3100 limit.rlim_max = limit.rlim_cur;
Willy Tarreaubf696402019-03-01 10:09:28 +01003101 rlim_fd_cur_at_boot = limit.rlim_cur;
3102 rlim_fd_max_at_boot = limit.rlim_max;
3103
Willy Tarreau5794fb02018-11-25 18:43:29 +01003104 /* process all initcalls in order of potential dependency */
3105 RUN_INITCALLS(STG_PREPARE);
3106 RUN_INITCALLS(STG_LOCK);
3107 RUN_INITCALLS(STG_ALLOC);
3108 RUN_INITCALLS(STG_POOL);
3109 RUN_INITCALLS(STG_REGISTER);
3110 RUN_INITCALLS(STG_INIT);
3111
Emeric Bruncf20bf12010-10-22 16:06:11 +02003112 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003113 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3114 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3115 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003116 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003117
Willy Tarreaue437c442010-03-17 18:02:46 +01003118 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3119 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3120 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003121 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003122 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003123
Willy Tarreaudc23a922011-02-16 11:10:36 +01003124 /* ulimits */
3125 if (!global.rlimit_nofile)
3126 global.rlimit_nofile = global.maxsock;
3127
3128 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003129 limit.rlim_cur = global.rlimit_nofile;
3130 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3131
Willy Tarreaudc23a922011-02-16 11:10:36 +01003132 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003133 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003134 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3135 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3136 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003137 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003138 }
3139 else {
3140 /* try to set it to the max possible at least */
3141 limit.rlim_cur = limit.rlim_max;
3142 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3143 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003144
William Dauchya5194602020-03-28 19:29:58 +01003145 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003146 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3147 global.rlimit_nofile = limit.rlim_cur;
3148 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003149 }
3150 }
3151
3152 if (global.rlimit_memmax) {
3153 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003154 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003155#ifdef RLIMIT_AS
3156 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003157 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3158 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3159 argv[0], global.rlimit_memmax);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003160 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003161 }
3162 else
William Dauchya5194602020-03-28 19:29:58 +01003163 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003164 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003165 }
3166#else
3167 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003168 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3169 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3170 argv[0], global.rlimit_memmax);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003171 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003172 }
3173 else
William Dauchya5194602020-03-28 19:29:58 +01003174 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003175 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003176 }
3177#endif
3178 }
3179
Olivier Houchardf73629d2017-04-05 22:33:04 +02003180 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003181 if (strcmp("/dev/null", old_unixsocket) != 0) {
Willy Tarreau42961742020-08-28 18:42:45 +02003182 if (sock_get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003183 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003184 if (!(global.mode & MODE_MWORKER))
3185 exit(1);
3186 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003187 }
3188 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003189 get_cur_unixsocket();
3190
Willy Tarreaubaaee002006-06-26 02:48:02 +02003191 /* We will loop at most 100 times with 10 ms delay each time.
3192 * That's at most 1 second. We only send a signal to old pids
3193 * if we cannot grab at least one port.
3194 */
3195 retry = MAX_START_RETRIES;
3196 err = ERR_NONE;
3197 while (retry >= 0) {
3198 struct timeval w;
Willy Tarreaue91bff22020-09-02 11:11:43 +02003199 err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003200 /* exit the loop on no error or fatal error */
3201 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003202 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003203 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003204 break;
3205
3206 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3207 * listening sockets. So on those platforms, it would be wiser to
3208 * simply send SIGUSR1, which will not be undoable.
3209 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003210 if (tell_old_pids(SIGTTOU) == 0) {
3211 /* no need to wait if we can't contact old pids */
3212 retry = 0;
3213 continue;
3214 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003215 /* give some time to old processes to stop listening */
3216 w.tv_sec = 0;
3217 w.tv_usec = 10*1000;
3218 select(0, NULL, NULL, NULL, &w);
3219 retry--;
3220 }
3221
Willy Tarreaue91bff22020-09-02 11:11:43 +02003222 /* Note: protocol_bind_all() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003223 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaue91bff22020-09-02 11:11:43 +02003224 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreauf68da462009-06-09 14:36:00 +02003225 if (retry != MAX_START_RETRIES && nb_oldpids) {
3226 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003227 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003228 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003229 exit(1);
3230 }
3231
William Lallemand944e6192018-11-21 15:48:31 +01003232 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003233 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003234 /* Note: we don't have to send anything to the old pids because we
3235 * never stopped them. */
3236 exit(1);
3237 }
3238
Willy Tarreaue91bff22020-09-02 11:11:43 +02003239 /* Ok, all listeners should now be bound, close any leftover sockets
Olivier Houchardf73629d2017-04-05 22:33:04 +02003240 * the previous process gave us, we don't need them anymore
3241 */
3242 while (xfer_sock_list != NULL) {
3243 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3244 close(xfer_sock_list->fd);
3245 free(xfer_sock_list->iface);
3246 free(xfer_sock_list->namespace);
3247 free(xfer_sock_list);
3248 xfer_sock_list = tmpxfer;
3249 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003250
Willy Tarreaubaaee002006-06-26 02:48:02 +02003251 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003252 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3253 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003254
Willy Tarreaubaaee002006-06-26 02:48:02 +02003255 /* MODE_QUIET can inhibit alerts and warnings below this line */
3256
PiBa-NL149a81a2017-12-25 21:03:31 +01003257 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3258 /* either stdin/out/err are already closed or should stay as they are. */
3259 if ((global.mode & MODE_DAEMON)) {
3260 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3261 global.mode &= ~MODE_VERBOSE;
3262 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3263 }
3264 } else {
3265 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3266 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003267 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003268 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003269 }
3270
3271 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003272 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003273 unlink(global.pidfile);
3274 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3275 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003276 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003277 if (nb_oldpids)
3278 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003279 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003280 exit(1);
3281 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003282 }
3283
Willy Tarreaub38651a2007-03-24 17:24:39 +01003284 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003285 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3286 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003287 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003288 exit(1);
3289 }
3290
Jackie Tapia749f74c2020-07-22 18:59:40 -05003291 /* If the user is not root, we'll still let them try the configuration
3292 * but we inform them that unexpected behaviour may occur.
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003293 */
3294 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003295 ha_warning("[%s.main()] Some options which require full privileges"
3296 " might not work well.\n"
3297 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003298
William Lallemand095ba4c2017-06-01 17:38:50 +02003299 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3300
3301 /* chroot if needed */
3302 if (global.chroot != NULL) {
3303 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003304 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003305 if (nb_oldpids)
3306 tell_old_pids(SIGTTIN);
3307 protocol_unbind_all();
3308 exit(1);
3309 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003310 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003311 }
3312
William Lallemand944e6192018-11-21 15:48:31 +01003313 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003314 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003315
William Lallemand27edc4b2019-05-07 17:49:33 +02003316 /* send a SIGTERM to workers who have a too high reloads number */
3317 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3318 mworker_kill_max_reloads(SIGTERM);
3319
William Lallemand8a361b52017-06-20 11:20:33 +02003320 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3321 nb_oldpids = 0;
3322 free(oldpids);
3323 oldpids = NULL;
3324 }
3325
3326
Willy Tarreaubaaee002006-06-26 02:48:02 +02003327 /* Note that any error at this stage will be fatal because we will not
3328 * be able to restart the old pids.
3329 */
3330
William Dauchyf9af9d72019-11-17 15:47:16 +01003331 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3332 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003333
Willy Tarreaubaaee002006-06-26 02:48:02 +02003334 /* check ulimits */
3335 limit.rlim_cur = limit.rlim_max = 0;
3336 getrlimit(RLIMIT_NOFILE, &limit);
3337 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003338 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3339 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3340 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3341 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3342 global.maxsock);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003343 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003344 }
3345 else
3346 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
William Dauchya5194602020-03-28 19:29:58 +01003347 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003348 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3349 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003350 }
3351
William Lallemand944e6192018-11-21 15:48:31 +01003352 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003353 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003354 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003355 int ret = 0;
3356 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003357 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003358
William Lallemand095ba4c2017-06-01 17:38:50 +02003359 /*
3360 * if daemon + mworker: must fork here to let a master
3361 * process live in background before forking children
3362 */
William Lallemand73b85e72017-06-01 17:38:51 +02003363
3364 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3365 && (global.mode & MODE_MWORKER)
3366 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003367 ret = fork();
3368 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003369 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003370 protocol_unbind_all();
3371 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003372 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003373 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003374 } else /* change the process group ID in the child (master process) */
3375 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003376 }
William Lallemande20b6a62017-06-01 17:38:55 +02003377
William Lallemande20b6a62017-06-01 17:38:55 +02003378
William Lallemanddeed7802017-11-06 11:00:04 +01003379 /* if in master-worker mode, write the PID of the father */
3380 if (global.mode & MODE_MWORKER) {
3381 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003382 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003383 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003384 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003385 }
3386
Willy Tarreaubaaee002006-06-26 02:48:02 +02003387 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003388 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003389 if (global.mode & MODE_MWORKER)
3390 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003391 for (proc = 0; proc < global.nbproc; proc++) {
3392 ret = fork();
3393 if (ret < 0) {
3394 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3395 protocol_unbind_all();
3396 exit(1); /* there has been an error */
3397 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003398 else if (ret == 0) { /* child breaks here */
3399 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003400 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003401 }
William Lallemand944e6192018-11-21 15:48:31 +01003402 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3403 char pidstr[100];
3404 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003405 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003406 }
3407 if (global.mode & MODE_MWORKER) {
3408 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003409
William Lallemand220567e2018-11-21 18:04:53 +01003410 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003411 /* find the right mworker_proc */
3412 list_for_each_entry(child, &proc_list, list) {
3413 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003414 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003415 child->timestamp = now.tv_sec;
3416 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003417 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003418 break;
3419 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003420 }
3421 }
William Lallemandbc193052018-09-11 10:06:26 +02003422
William Lallemand944e6192018-11-21 15:48:31 +01003423 relative_pid++; /* each child will get a different one */
3424 pid_bit <<= 1;
3425 }
3426 } else {
3427 /* wait mode */
3428 global.nbproc = 1;
3429 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003430 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003431
3432#ifdef USE_CPU_AFFINITY
3433 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003434 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003435 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003436#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003437 {
3438 cpuset_t cpuset;
3439 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003440 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003441
3442 CPU_ZERO(&cpuset);
3443 while ((i = ffsl(cpu_map)) > 0) {
3444 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003445 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003446 }
3447 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3448 }
David Carlierc5ab3f02020-12-02 21:14:51 +00003449#elif defined(__linux__) || defined(__DragonFly__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003450 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003451#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003452#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003453 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003454 if (pidfd >= 0) {
3455 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3456 close(pidfd);
3457 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003458
3459 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003460 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003461
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003462 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003463 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003464
3465 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3466 (global.mode & MODE_DAEMON)) {
3467 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003468 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3469 stdio_quiet(-1);
3470
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003471 global.mode &= ~MODE_VERBOSE;
3472 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003473 }
3474
William Lallemandb3f2be32018-09-11 10:06:18 +02003475 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003476 /* should never get there */
3477 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003478 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003479#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003480 ssl_free_dh();
3481#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003482 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003483 }
3484
William Lallemandcb11fd22017-06-01 17:38:52 +02003485 /* child must never use the atexit function */
3486 atexit_flag = 0;
3487
William Lallemandbc193052018-09-11 10:06:26 +02003488 /* close useless master sockets */
3489 if (global.mode & MODE_MWORKER) {
3490 struct mworker_proc *child, *it;
3491 master = 0;
3492
William Lallemand309dc9a2018-10-26 14:47:45 +02003493 mworker_cli_proxy_stop();
3494
William Lallemandbc193052018-09-11 10:06:26 +02003495 /* free proc struct of other processes */
3496 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003497 /* close the FD of the master side for all
3498 * workers, we don't need to close the worker
3499 * side of other workers since it's done with
3500 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003501 if (child->ipc_fd[0] >= 0)
3502 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003503 if (child->relative_pid == relative_pid &&
3504 child->reloads == 0) {
3505 /* keep this struct if this is our pid */
3506 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003507 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003508 }
William Lallemandbc193052018-09-11 10:06:26 +02003509 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003510 mworker_free_child(child);
3511 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003512 }
3513 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003514
William Lallemande1340412017-12-28 16:09:36 +01003515 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3516 devnullfd = open("/dev/null", O_RDWR, 0);
3517 if (devnullfd < 0) {
3518 ha_alert("Cannot open /dev/null\n");
3519 exit(EXIT_FAILURE);
3520 }
3521 }
3522
William Lallemand095ba4c2017-06-01 17:38:50 +02003523 /* Must chroot and setgid/setuid in the children */
3524 /* chroot if needed */
3525 if (global.chroot != NULL) {
3526 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003527 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003528 if (nb_oldpids)
3529 tell_old_pids(SIGTTIN);
3530 protocol_unbind_all();
3531 exit(1);
3532 }
3533 }
3534
3535 free(global.chroot);
3536 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003537 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003538
William Lallemand7f80eb22017-05-26 18:19:55 +02003539 /* pass through every cli socket, and check if it's bound to
3540 * the current process and if it exposes listeners sockets.
3541 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3542 * */
3543
3544 if (global.stats_fe) {
3545 struct bind_conf *bind_conf;
3546
3547 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3548 if (bind_conf->level & ACCESS_FD_LISTENERS) {
Willy Tarreaue26993c2020-09-03 07:18:55 +02003549 if (!bind_conf->settings.bind_proc || bind_conf->settings.bind_proc & (1UL << proc)) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003550 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3551 break;
3552 }
3553 }
3554 }
3555 }
3556
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003557 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003558 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003559 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003560 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003561 if (!(px->bind_proc & (1UL << proc)))
3562 stop_proxy(px);
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003563 }
3564 px = px->next;
3565 }
3566
Emeric Brunc47ba592020-10-07 10:13:10 +02003567 /* we might have to unbind some log forward proxies from some processes */
3568 px = cfg_log_forward;
3569 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003570 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003571 if (!(px->bind_proc & (1UL << proc)))
3572 stop_proxy(px);
Emeric Brunc47ba592020-10-07 10:13:10 +02003573 }
3574 px = px->next;
3575 }
3576
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003577 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003578 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003579 if (!curpeers->peers_fe)
3580 continue;
3581
3582 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3583 continue;
3584
3585 stop_proxy(curpeers->peers_fe);
3586 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003587 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003588 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003589 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003590 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003591 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003592 curpeers->peers_fe = NULL;
3593 }
3594
William Lallemand2e8fad92018-11-13 16:18:23 +01003595 /*
3596 * This is only done in daemon mode because we might want the
3597 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3598 * we should now close the 3 first FDs to ensure that we can
3599 * detach from the TTY. We MUST NOT do it in other cases since
3600 * it would have already be done, and 0-2 would have been
3601 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003602 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003603 if ((global.mode & MODE_DAEMON) &&
3604 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003605 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003606 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003607 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003608 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3609 }
3610 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003611 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3612 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003613 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003614 }
3615
William Dauchye039f262019-11-17 15:47:15 +01003616 /* try our best to re-enable core dumps depending on system capabilities.
3617 * What is addressed here :
3618 * - remove file size limits
3619 * - remove core size limits
3620 * - mark the process dumpable again if it lost it due to user/group
3621 */
3622 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3623 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3624
3625#if defined(RLIMIT_FSIZE)
3626 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3627 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3628 ha_alert("[%s.main()] Failed to set the raise the maximum "
3629 "file size.\n", argv[0]);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003630 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003631 }
3632 else
3633 ha_warning("[%s.main()] Failed to set the raise the maximum "
William Dauchya5194602020-03-28 19:29:58 +01003634 "file size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003635 }
3636#endif
3637
3638#if defined(RLIMIT_CORE)
3639 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3640 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3641 ha_alert("[%s.main()] Failed to set the raise the core "
3642 "dump size.\n", argv[0]);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003643 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003644 }
3645 else
3646 ha_warning("[%s.main()] Failed to set the raise the core "
William Dauchya5194602020-03-28 19:29:58 +01003647 "dump size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003648 }
3649#endif
3650
3651#if defined(USE_PRCTL)
3652 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3653 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3654 "no core will be dumped.\n", argv[0]);
3655#endif
3656 }
3657
Christopher Faulete3a5e352017-10-24 13:53:54 +02003658 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003659 /*
3660 * That's it : the central polling loop. Run until we stop.
3661 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003662#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003663 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003664 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003665 int i;
3666
William Lallemand1aab50b2018-06-07 09:46:01 +02003667 /* ensure the signals will be blocked in every thread */
3668 sigfillset(&blocked_sig);
3669 sigdelset(&blocked_sig, SIGPROF);
3670 sigdelset(&blocked_sig, SIGBUS);
3671 sigdelset(&blocked_sig, SIGFPE);
3672 sigdelset(&blocked_sig, SIGILL);
3673 sigdelset(&blocked_sig, SIGSEGV);
3674 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3675
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003676 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003677 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003678 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003679 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003680
Christopher Faulet62519022017-10-16 15:49:32 +02003681#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003682 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003683 if (global.cpu_map.proc_t1[relative_pid-1])
3684 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3685
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003686 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003687 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003688 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003689
Willy Tarreau421f02e2018-01-20 18:19:22 +01003690 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003691 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003692#if defined(__APPLE__)
3693 int j;
3694 unsigned long cpu_map = global.cpu_map.thread[i];
3695
3696 while ((j = ffsl(cpu_map)) > 0) {
3697 thread_affinity_policy_data_t cpu_set = { j - 1 };
3698 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3699 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3700 cpu_map &= ~(1UL << (j - 1));
3701 }
3702#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003703#if defined(__FreeBSD__) || defined(__NetBSD__)
3704 cpuset_t cpuset;
3705#else
3706 cpu_set_t cpuset;
3707#endif
3708 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003709 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003710
3711 CPU_ZERO(&cpuset);
3712
3713 while ((j = ffsl(cpu_map)) > 0) {
3714 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003715 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003716 }
David Carliera92c5ce2019-09-13 05:03:12 +01003717 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003718 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003719#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003720 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003721 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003722#endif /* !USE_CPU_AFFINITY */
3723
William Lallemand1aab50b2018-06-07 09:46:01 +02003724 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003725 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003726
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003727 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003728 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003729
3730 /* Wait the end of other threads */
3731 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003732 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003733
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003734#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3735 show_lock_stats();
3736#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003737 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003738#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003739 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003740 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003741#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003742
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003743 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003744}
3745
Willy Tarreaubaaee002006-06-26 02:48:02 +02003746/*
3747 * Local variables:
3748 * c-indent-level: 8
3749 * c-basic-offset: 8
3750 * End:
3751 */