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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau71f95fa2020-01-22 10:34:58 +01003 * Copyright 2000-2020 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Ilya Shipitsin46a030c2020-07-05 16:36:08 +050010 * Please refer to RFC7230 - RFC7235 information about HTTP protocol, and
11 * RFC6265 for information about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
42#include <netdb.h>
43#include <fcntl.h>
44#include <errno.h>
45#include <signal.h>
46#include <stdarg.h>
47#include <sys/resource.h>
Tim Duesterhusdfad6a42020-04-18 16:02:47 +020048#include <sys/utsname.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
David Carlier5e4c8e22019-09-13 05:12:58 +010062#ifdef __APPLE__
63#include <mach/mach_types.h>
64#include <mach/thread_act.h>
65#include <mach/thread_policy.h>
66#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010067#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau636848a2019-04-15 19:38:50 +020069#if defined(USE_PRCTL)
70#include <sys/prctl.h>
71#endif
72
Willy Tarreaubaaee002006-06-26 02:48:02 +020073#ifdef DEBUG_FULL
74#include <assert.h>
75#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010076#if defined(USE_SYSTEMD)
77#include <systemd/sd-daemon.h>
78#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020079
Willy Tarreau6c3a6812020-03-06 18:57:15 +010080#include <import/sha1.h>
81
Willy Tarreaub2551052020-06-09 09:07:15 +020082#include <haproxy/acl.h>
83#include <haproxy/activity.h>
84#include <haproxy/api.h>
85#include <haproxy/arg.h>
86#include <haproxy/auth.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020087#include <haproxy/base64.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020088#include <haproxy/capture-t.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020089#include <haproxy/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020090#include <haproxy/chunk.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020091#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020092#include <haproxy/connection.h>
Willy Tarreaueb92deb2020-06-04 10:53:16 +020093#include <haproxy/dns.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020094#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020095#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020096#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +020097#include <haproxy/filters.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020098#include <haproxy/global.h>
Willy Tarreau86416052020-06-04 09:20:54 +020099#include <haproxy/hlua.h>
Willy Tarreauc761f842020-06-04 11:40:28 +0200100#include <haproxy/http_rules.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200101#include <haproxy/list.h>
Willy Tarreau213e9902020-06-04 14:58:24 +0200102#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +0200103#include <haproxy/log.h>
Willy Tarreaub5abe5b2020-06-04 14:07:37 +0200104#include <haproxy/mworker.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +0200105#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +0200106#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +0200107#include <haproxy/openssl-compat.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200108#include <haproxy/pattern.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +0200109#include <haproxy/peers.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200110#include <haproxy/pool.h>
111#include <haproxy/protocol.h>
Willy Tarreaubf3b06b2020-08-26 10:23:40 +0200112#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200113#include <haproxy/proxy.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +0200114#include <haproxy/regex.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200115#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +0200116#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +0200117#include <haproxy/session.h>
Willy Tarreau3727a8a2020-06-04 17:37:26 +0200118#include <haproxy/signal.h>
Willy Tarreau063d47d2020-08-28 16:29:53 +0200119#include <haproxy/sock.h>
Willy Tarreau25140cc2020-08-28 15:40:33 +0200120#include <haproxy/sock_inet.h>
Willy Tarreau209108d2020-06-04 20:30:20 +0200121#include <haproxy/ssl_sock.h>
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 Tarreauc77d3642018-12-12 06:19:42 +0100167 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100168 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200169 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200170 .pool_low_ratio = 20,
171 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200172 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200173#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100174 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200175#endif
William Lallemandf3747832012-11-09 12:33:10 +0100176 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100177#ifdef DEFAULT_IDLE_TIMER
178 .idle_timer = DEFAULT_IDLE_TIMER,
179#else
180 .idle_timer = 1000, /* 1 second */
181#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200182 },
Emeric Brun76d88952012-10-05 15:47:31 +0200183#ifdef USE_OPENSSL
184#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200185 .maxsslconn = DEFAULT_MAXSSLCONN,
186#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200187#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200188 /* others NULL OK */
189};
190
191/*********************************************************************/
192
193int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100194int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200195int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100196int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100197int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100198int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200199
Ilya Shipitsin46a030c2020-07-05 16:36:08 +0500200/* Here we store information about the pids of the processes we may pause
Willy Tarreaubaaee002006-06-26 02:48:02 +0200201 * or kill. We will send them a signal every 10 ms until we can bind to all
202 * our ports. With 200 retries, that's about 2 seconds.
203 */
204#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200205static int *oldpids = NULL;
206static int oldpids_sig; /* use USR1 or TERM */
207
Olivier Houchardf73629d2017-04-05 22:33:04 +0200208/* Path to the unix socket we use to retrieve listener sockets from the old process */
209static const char *old_unixsocket;
210
William Lallemand85b0bd92017-06-01 17:38:53 +0200211static char *cur_unixsocket = NULL;
212
William Lallemandcb11fd22017-06-01 17:38:52 +0200213int atexit_flag = 0;
214
Willy Tarreaubb545b42010-08-25 12:58:59 +0200215int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200216const int zero = 0;
217const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200218const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200219
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100220char hostname[MAX_HOSTNAME_LEN];
Dragan Dosen4f014152020-06-18 16:56:47 +0200221char *localpeer = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200222
William Lallemand00417412020-06-05 14:08:41 +0200223static char **old_argv = NULL; /* previous argv but cleaned up */
William Lallemand73b85e72017-06-01 17:38:51 +0200224
William Lallemandbc193052018-09-11 10:06:26 +0200225struct list proc_list = LIST_HEAD_INIT(proc_list);
226
227int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100228unsigned int rlim_fd_cur_at_boot = 0;
229unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200230
Willy Tarreau6c3a6812020-03-06 18:57:15 +0100231/* per-boot randomness */
232unsigned char boot_seed[20]; /* per-boot random seed (160 bits initially) */
233
William Lallemand16dd1b32018-11-19 18:46:18 +0100234struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200235
William Lallemandb3f2be32018-09-11 10:06:18 +0200236static void *run_thread_poll_loop(void *data);
237
Willy Tarreauff055502014-04-28 22:27:06 +0200238/* bitfield of a few warnings to emit just once (WARN_*) */
239unsigned int warned = 0;
240
William Lallemande7361152018-10-26 14:47:36 +0200241/* master CLI configuration (-S flag) */
242struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100243
244/* These are strings to be reported in the output of "haproxy -vv". They may
245 * either be constants (in which case must_free must be zero) or dynamically
246 * allocated strings to pass to free() on exit, and in this case must_free
247 * must be non-zero.
248 */
249struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
250struct build_opts_str {
251 struct list list;
252 const char *str;
253 int must_free;
254};
255
Willy Tarreaue6945732016-12-21 19:57:00 +0100256/* These functions are called just after the point where the program exits
257 * after a config validity check, so they are generally suited for resource
258 * allocation and slow initializations that should be skipped during basic
259 * config checks. The functions must return 0 on success, or a combination
260 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
261 * and immediate exit, so the function must have emitted any useful error.
262 */
263struct list post_check_list = LIST_HEAD_INIT(post_check_list);
264struct post_check_fct {
265 struct list list;
266 int (*fct)();
267};
268
Christopher Fauletc1692962019-08-12 09:51:07 +0200269/* These functions are called for each proxy just after the config validity
270 * check. The functions must return 0 on success, or a combination of ERR_*
271 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
272 * exit, so the function must have emitted any useful error.
273 */
274struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
275struct post_proxy_check_fct {
276 struct list list;
277 int (*fct)(struct proxy *);
278};
279
280/* These functions are called for each server just after the config validity
281 * check. The functions must return 0 on success, or a combination of ERR_*
282 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
283 * exit, so the function must have emitted any useful error.
284 */
285struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
286struct post_server_check_fct {
287 struct list list;
288 int (*fct)(struct server *);
289};
290
Willy Tarreau082b6282019-05-22 14:42:12 +0200291/* These functions are called for each thread just after the thread creation
292 * and before running the init functions. They should be used to do per-thread
293 * (re-)allocations that are needed by subsequent functoins. They must return 0
294 * if an error occurred. */
295struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
296struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100297 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200298 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100299};
300
Christopher Faulet415f6112017-07-25 16:52:58 +0200301/* These functions are called for each thread just after the thread creation
302 * and before running the scheduler. They should be used to do per-thread
303 * initializations. They must return 0 if an error occurred. */
304struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
305struct per_thread_init_fct {
306 struct list list;
307 int (*fct)();
308};
309
Willy Tarreau082b6282019-05-22 14:42:12 +0200310/* These functions are called when freeing the global sections at the end of
311 * deinit, after everything is stopped. They don't return anything. They should
312 * not release shared resources that are possibly used by other deinit
313 * functions, only close/release what is private. Use the per_thread_free_list
314 * to release shared resources.
315 */
316struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
317struct post_deinit_fct {
318 struct list list;
319 void (*fct)();
320};
321
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200322/* These functions are called when freeing a proxy during the deinit, after
323 * everything isg stopped. They don't return anything. They should not release
324 * the proxy itself or any shared resources that are possibly used by other
325 * deinit functions, only close/release what is private.
326 */
327struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
328struct proxy_deinit_fct {
329 struct list list;
330 void (*fct)(struct proxy *);
331};
332
333/* These functions are called when freeing a server during the deinit, after
334 * everything isg stopped. They don't return anything. They should not release
335 * the proxy itself or any shared resources that are possibly used by other
336 * deinit functions, only close/release what is private.
337 */
338struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
339struct server_deinit_fct {
340 struct list list;
341 void (*fct)(struct server *);
342};
343
Willy Tarreau082b6282019-05-22 14:42:12 +0200344/* These functions are called when freeing the global sections at the end of
345 * deinit, after the thread deinit functions, to release unneeded memory
346 * allocations. They don't return anything, and they work in best effort mode
347 * as their sole goal is to make valgrind mostly happy.
348 */
349struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
350struct per_thread_free_fct {
351 struct list list;
352 int (*fct)();
353};
354
Christopher Faulet415f6112017-07-25 16:52:58 +0200355/* These functions are called for each thread just after the scheduler loop and
356 * before exiting the thread. They don't return anything and, as for post-deinit
357 * functions, they work in best effort mode as their sole goal is to make
358 * valgrind mostly happy. */
359struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
360struct per_thread_deinit_fct {
361 struct list list;
362 void (*fct)();
363};
364
Willy Tarreaubaaee002006-06-26 02:48:02 +0200365/*********************************************************************/
366/* general purpose functions ***************************************/
367/*********************************************************************/
368
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100369/* used to register some build option strings at boot. Set must_free to
370 * non-zero if the string must be freed upon exit.
371 */
372void hap_register_build_opts(const char *str, int must_free)
373{
374 struct build_opts_str *b;
375
376 b = calloc(1, sizeof(*b));
377 if (!b) {
378 fprintf(stderr, "out of memory\n");
379 exit(1);
380 }
381 b->str = str;
382 b->must_free = must_free;
383 LIST_ADDQ(&build_opts_list, &b->list);
384}
385
Willy Tarreaue6945732016-12-21 19:57:00 +0100386/* used to register some initialization functions to call after the checks. */
387void hap_register_post_check(int (*fct)())
388{
389 struct post_check_fct *b;
390
391 b = calloc(1, sizeof(*b));
392 if (!b) {
393 fprintf(stderr, "out of memory\n");
394 exit(1);
395 }
396 b->fct = fct;
397 LIST_ADDQ(&post_check_list, &b->list);
398}
399
Christopher Fauletc1692962019-08-12 09:51:07 +0200400/* used to register some initialization functions to call for each proxy after
401 * the checks.
402 */
403void hap_register_post_proxy_check(int (*fct)(struct proxy *))
404{
405 struct post_proxy_check_fct *b;
406
407 b = calloc(1, sizeof(*b));
408 if (!b) {
409 fprintf(stderr, "out of memory\n");
410 exit(1);
411 }
412 b->fct = fct;
413 LIST_ADDQ(&post_proxy_check_list, &b->list);
414}
415
416/* used to register some initialization functions to call for each server after
417 * the checks.
418 */
419void hap_register_post_server_check(int (*fct)(struct server *))
420{
421 struct post_server_check_fct *b;
422
423 b = calloc(1, sizeof(*b));
424 if (!b) {
425 fprintf(stderr, "out of memory\n");
426 exit(1);
427 }
428 b->fct = fct;
429 LIST_ADDQ(&post_server_check_list, &b->list);
430}
431
Willy Tarreau05554e62016-12-21 20:46:26 +0100432/* used to register some de-initialization functions to call after everything
433 * has stopped.
434 */
435void hap_register_post_deinit(void (*fct)())
436{
437 struct post_deinit_fct *b;
438
439 b = calloc(1, sizeof(*b));
440 if (!b) {
441 fprintf(stderr, "out of memory\n");
442 exit(1);
443 }
444 b->fct = fct;
445 LIST_ADDQ(&post_deinit_list, &b->list);
446}
447
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200448/* used to register some per proxy de-initialization functions to call after
449 * everything has stopped.
450 */
451void hap_register_proxy_deinit(void (*fct)(struct proxy *))
452{
453 struct proxy_deinit_fct *b;
454
455 b = calloc(1, sizeof(*b));
456 if (!b) {
457 fprintf(stderr, "out of memory\n");
458 exit(1);
459 }
460 b->fct = fct;
461 LIST_ADDQ(&proxy_deinit_list, &b->list);
462}
463
464
465/* used to register some per server de-initialization functions to call after
466 * everything has stopped.
467 */
468void hap_register_server_deinit(void (*fct)(struct server *))
469{
470 struct server_deinit_fct *b;
471
472 b = calloc(1, sizeof(*b));
473 if (!b) {
474 fprintf(stderr, "out of memory\n");
475 exit(1);
476 }
477 b->fct = fct;
478 LIST_ADDQ(&server_deinit_list, &b->list);
479}
480
Willy Tarreau082b6282019-05-22 14:42:12 +0200481/* used to register some allocation functions to call for each thread. */
482void hap_register_per_thread_alloc(int (*fct)())
483{
484 struct per_thread_alloc_fct *b;
485
486 b = calloc(1, sizeof(*b));
487 if (!b) {
488 fprintf(stderr, "out of memory\n");
489 exit(1);
490 }
491 b->fct = fct;
492 LIST_ADDQ(&per_thread_alloc_list, &b->list);
493}
494
Christopher Faulet415f6112017-07-25 16:52:58 +0200495/* used to register some initialization functions to call for each thread. */
496void hap_register_per_thread_init(int (*fct)())
497{
498 struct per_thread_init_fct *b;
499
500 b = calloc(1, sizeof(*b));
501 if (!b) {
502 fprintf(stderr, "out of memory\n");
503 exit(1);
504 }
505 b->fct = fct;
506 LIST_ADDQ(&per_thread_init_list, &b->list);
507}
508
509/* used to register some de-initialization functions to call for each thread. */
510void hap_register_per_thread_deinit(void (*fct)())
511{
512 struct per_thread_deinit_fct *b;
513
514 b = calloc(1, sizeof(*b));
515 if (!b) {
516 fprintf(stderr, "out of memory\n");
517 exit(1);
518 }
519 b->fct = fct;
520 LIST_ADDQ(&per_thread_deinit_list, &b->list);
521}
522
Willy Tarreau082b6282019-05-22 14:42:12 +0200523/* used to register some free functions to call for each thread. */
524void hap_register_per_thread_free(int (*fct)())
525{
526 struct per_thread_free_fct *b;
527
528 b = calloc(1, sizeof(*b));
529 if (!b) {
530 fprintf(stderr, "out of memory\n");
531 exit(1);
532 }
533 b->fct = fct;
534 LIST_ADDQ(&per_thread_free_list, &b->list);
535}
536
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100537static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200538{
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200539 struct utsname utsname;
540
Willy Tarreau08dd2022019-11-21 18:07:30 +0100541 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
542 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100543
544 if (strlen(PRODUCT_URL_BUGS) > 0) {
545 char base_version[20];
546 int dots = 0;
547 char *del;
548
549 /* only retrieve the base version without distro-specific extensions */
550 for (del = haproxy_version; *del; del++) {
551 if (*del == '.')
552 dots++;
553 else if (*del < '0' || *del > '9')
554 break;
555 }
556
557 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
558 if (dots < 2)
559 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
560 else
561 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
562 }
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200563
564 if (uname(&utsname) == 0) {
565 printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
566 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200567}
568
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100569static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100570{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100571 struct build_opts_str *item;
572
Willy Tarreau7b066db2007-12-02 11:28:59 +0100573 printf("Build options :"
574#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100575 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100576#endif
577#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100578 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100579#endif
580#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100581 "\n CC = " BUILD_CC
582#endif
583#ifdef BUILD_CFLAGS
584 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100585#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100586#ifdef BUILD_OPTIONS
587 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100588#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100589#ifdef BUILD_FEATURES
590 "\n\nFeature list : " BUILD_FEATURES
591#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200592 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100593 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200594 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100595 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200596
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100597 list_for_each_entry(item, &build_opts_list, list) {
598 puts(item->str);
599 }
600
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100601 putchar('\n');
602
Willy Tarreaube5b6852009-10-03 18:57:08 +0200603 list_pollers(stdout);
604 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200605 list_mux_proto(stdout);
606 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100607 list_services(stdout);
608 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100609 list_filters(stdout);
610 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100611}
612
Willy Tarreaubaaee002006-06-26 02:48:02 +0200613/*
614 * This function prints the command line usage and exits
615 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100616static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200617{
618 display_version();
619 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200620 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200621 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200622 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100623 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200624 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200625 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200626 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200627 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200628 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100629#if defined(USE_SYSTEMD)
630 " -Ws master-worker mode with systemd notify support.\n"
631#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200632 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200633 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100634 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200635 " -m limits the usable amount of memory (in MB)\n"
636 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200637 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200638 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200639#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200640 " -de disables epoll() usage even when available\n"
641#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200642#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200643 " -dk disables kqueue() usage even when available\n"
644#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200645#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000646 " -dv disables event ports usage even when available\n"
647#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200648#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200649 " -dp disables poll() usage even when available\n"
650#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200651#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100652 " -dS disables splice usage (broken on old kernels)\n"
653#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200654#if defined(USE_GETADDRINFO)
655 " -dG disables getaddrinfo() usage\n"
656#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000657#if defined(SO_REUSEPORT)
658 " -dR disables SO_REUSEPORT usage\n"
659#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100660 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100661 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200662 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200663 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200664 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200665 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200666 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100667 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200668 exit(1);
669}
670
671
672
673/*********************************************************************/
674/* more specific functions ***************************************/
675/*********************************************************************/
676
William Lallemand73b85e72017-06-01 17:38:51 +0200677/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
678 * pids the signal was correctly delivered to.
679 */
William Lallemande25473c2019-04-01 11:29:56 +0200680int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200681{
682 int p;
683 int ret = 0;
684 for (p = 0; p < nb_oldpids; p++)
685 if (kill(oldpids[p], sig) == 0)
686 ret++;
687 return ret;
688}
689
William Lallemand75ea0a02017-11-15 19:02:58 +0100690/*
William Lallemand73b85e72017-06-01 17:38:51 +0200691 * remove a pid forom the olpid array and decrease nb_oldpids
692 * return 1 pid was found otherwise return 0
693 */
694
695int delete_oldpid(int pid)
696{
697 int i;
698
699 for (i = 0; i < nb_oldpids; i++) {
700 if (oldpids[i] == pid) {
701 oldpids[i] = oldpids[nb_oldpids - 1];
702 oldpids[nb_oldpids - 1] = 0;
703 nb_oldpids--;
704 return 1;
705 }
706 }
707 return 0;
708}
709
William Lallemand85b0bd92017-06-01 17:38:53 +0200710
711static void get_cur_unixsocket()
712{
713 /* if -x was used, try to update the stat socket if not available anymore */
714 if (global.stats_fe) {
715 struct bind_conf *bind_conf;
716
717 /* pass through all stats socket */
718 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
719 struct listener *l;
720
721 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
722
Willy Tarreau37159062020-08-27 07:48:42 +0200723 if (l->rx.addr.ss_family == AF_UNIX &&
William Lallemand85b0bd92017-06-01 17:38:53 +0200724 (bind_conf->level & ACCESS_FD_LISTENERS)) {
725 const struct sockaddr_un *un;
726
Willy Tarreau37159062020-08-27 07:48:42 +0200727 un = (struct sockaddr_un *)&l->rx.addr;
William Lallemand85b0bd92017-06-01 17:38:53 +0200728 /* priority to old_unixsocket */
729 if (!cur_unixsocket) {
730 cur_unixsocket = strdup(un->sun_path);
731 } else {
732 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
733 free(cur_unixsocket);
734 cur_unixsocket = strdup(old_unixsocket);
735 return;
736 }
737 }
738 }
739 }
740 }
741 }
742 if (!cur_unixsocket && old_unixsocket)
743 cur_unixsocket = strdup(old_unixsocket);
744}
745
William Lallemand73b85e72017-06-01 17:38:51 +0200746/*
747 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800748 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200749 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100750void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200751{
William Lallemand00417412020-06-05 14:08:41 +0200752 char **next_argv = NULL;
753 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200754 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200755 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200756 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100757 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100758 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200759
760 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100761#if defined(USE_SYSTEMD)
762 if (global.tune.options & GTUNE_USE_SYSTEMD)
763 sd_notify(0, "RELOADING=1");
764#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200765 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
766
William Lallemandbc193052018-09-11 10:06:26 +0200767 mworker_proc_list_to_env(); /* put the children description in the env */
768
William Lallemand7c756a82018-11-26 11:53:40 +0100769 /* during the reload we must ensure that every FDs that can't be
770 * reuse (ie those that are not referenced in the proc_list)
771 * are closed or they will leak. */
772
773 /* close the listeners FD */
774 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200775
776 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
777 /* close the poller FD and the thread waker pipe FD */
778 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
779 ptdf->fct();
780 if (fdtab)
781 deinit_pollers();
782 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200783#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200784 /* close random device FDs */
785 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100786#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100787
Willy Tarreau8dca1952019-03-01 10:21:55 +0100788 /* restore the initial FD limits */
789 limit.rlim_cur = rlim_fd_cur_at_boot;
790 limit.rlim_max = rlim_fd_max_at_boot;
791 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
792 getrlimit(RLIMIT_NOFILE, &limit);
793 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
794 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
795 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
796 }
797
William Lallemand73b85e72017-06-01 17:38:51 +0200798 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200799 while (old_argv[old_argc])
800 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200801
William Lallemand85b0bd92017-06-01 17:38:53 +0200802 /* 1 for haproxy -sf, 2 for -x /socket */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200803 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1,
804 sizeof(*next_argv));
William Lallemand73b85e72017-06-01 17:38:51 +0200805 if (next_argv == NULL)
806 goto alloc_error;
807
William Lallemand00417412020-06-05 14:08:41 +0200808 /* copy the program name */
809 next_argv[next_argc++] = old_argv[0];
810
811 /* insert the new options just after argv[0] in case we have a -- */
812
William Lallemand73b85e72017-06-01 17:38:51 +0200813 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200814 if (mworker_child_nb() > 0) {
815 struct mworker_proc *child;
816
William Lallemand73b85e72017-06-01 17:38:51 +0200817 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200818
819 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100820 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200821 continue;
William Lallemand00417412020-06-05 14:08:41 +0200822 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200823 goto alloc_error;
824 msg = NULL;
825 }
826 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200827 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200828 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200829 next_argv[next_argc++] = "-x";
830 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200831 }
832
William Lallemand00417412020-06-05 14:08:41 +0200833 /* copy the previous options */
834 for (i = 1; i < old_argc; i++)
835 next_argv[next_argc++] = old_argv[i];
836
Christopher Faulet767a84b2017-11-24 16:50:31 +0100837 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200838 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100839 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200840
Christopher Faulet767a84b2017-11-24 16:50:31 +0100841 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand9fc6c972020-06-08 10:01:13 +0200842 free(next_argv);
843 next_argv = NULL;
William Lallemand722d4ca2017-11-15 19:02:55 +0100844 return;
845
William Lallemand73b85e72017-06-01 17:38:51 +0200846alloc_error:
William Lallemand00417412020-06-05 14:08:41 +0200847 free(next_argv);
848 next_argv = NULL;
Joseph Herlant07a08342018-11-15 10:43:05 -0800849 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200850 return;
851}
852
William Lallemandb3f2be32018-09-11 10:06:18 +0200853static void mworker_loop()
854{
855
856#if defined(USE_SYSTEMD)
857 if (global.tune.options & GTUNE_USE_SYSTEMD)
858 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
859#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200860 /* Busy polling makes no sense in the master :-) */
861 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200862
William Lallemandbc193052018-09-11 10:06:26 +0200863 master = 1;
864
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100865 signal_unregister(SIGTTIN);
866 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100867 signal_unregister(SIGUSR1);
868 signal_unregister(SIGHUP);
869 signal_unregister(SIGQUIT);
870
William Lallemandb3f2be32018-09-11 10:06:18 +0200871 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
872 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100873 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
874 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200875 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
876 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
877 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
878 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
879
880 mworker_unblock_signals();
881 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100882 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200883
William Lallemandbc193052018-09-11 10:06:26 +0200884 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
885 some SIGCHLD were lost */
886
William Lallemandb3f2be32018-09-11 10:06:18 +0200887 global.nbthread = 1;
888 relative_pid = 1;
889 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100890 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200891
William Lallemand2672eb92018-12-14 15:52:39 +0100892#ifdef USE_THREAD
893 tid_bit = 1;
894 all_threads_mask = 1;
895#endif
896
William Lallemandb3f2be32018-09-11 10:06:18 +0200897 jobs++; /* this is the "master" job, we want to take care of the
898 signals even if there is no listener so the poll loop don't
899 leave */
900
901 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200902 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200903}
William Lallemandcb11fd22017-06-01 17:38:52 +0200904
905/*
906 * Reexec the process in failure mode, instead of exiting
907 */
908void reexec_on_failure()
909{
910 if (!atexit_flag)
911 return;
912
913 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
914
Christopher Faulet767a84b2017-11-24 16:50:31 +0100915 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200916 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200917}
William Lallemand73b85e72017-06-01 17:38:51 +0200918
919
920/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200921 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
922 * a signal zero to all subscribers. This means that it's as easy as
923 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200924 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100925static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200926{
927 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200928 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100929 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200930}
931
932/*
933 * upon SIGTTOU, we pause everything
934 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100935static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200936{
Willy Tarreau775e0012020-09-24 16:36:26 +0200937 if (protocol_pause_all() & ERR_FATAL) {
938 const char *msg = "Some proxies refused to pause, performing soft stop now.\n";
939 ha_warning(msg);
940 send_log(NULL, LOG_WARNING, msg);
941 soft_stop();
942 }
Willy Tarreaubafbe012017-11-24 17:34:44 +0100943 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200944}
945
946/*
947 * upon SIGTTIN, let's have a soft stop.
948 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100949static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200950{
Willy Tarreau775e0012020-09-24 16:36:26 +0200951 if (protocol_resume_all() & ERR_FATAL) {
952 const char *msg = "Some proxies refused to resume, probably due to a conflict on a listening port. You may want to try again after the conflicting application is stopped, otherwise a restart might be needed to resume safe operations.\n";
953 ha_warning(msg);
954 send_log(NULL, LOG_WARNING, msg);
955 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200956}
957
958/*
959 * this function dumps every server's state when the process receives SIGHUP.
960 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100961static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200962{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100963 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200964
Christopher Faulet767a84b2017-11-24 16:50:31 +0100965 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200966 while (p) {
967 struct server *s = p->srv;
968
969 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
970 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100971 chunk_printf(&trash,
972 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
973 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200974 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100975 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200976 ha_warning("%s\n", trash.area);
977 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200978 s = s->next;
979 }
980
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200981 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
982 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100983 chunk_printf(&trash,
984 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
985 p->id,
986 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200987 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100988 chunk_printf(&trash,
989 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
990 p->id,
991 (p->srv_bck) ? "is running on backup servers" : "has no server available",
992 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200993 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100994 chunk_printf(&trash,
995 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
996 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
997 p->id, p->srv_act, p->srv_bck,
998 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200999 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001000 ha_warning("%s\n", trash.area);
1001 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001002
1003 p = p->next;
1004 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001005}
1006
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001007static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001008{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001009 /* dump memory usage then free everything possible */
1010 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001011 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001012}
1013
William Lallemande1340412017-12-28 16:09:36 +01001014/*
1015 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1016 * If <fd> < 0, it opens /dev/null and use it to dup
1017 *
1018 * In the case of chrooting, you have to open /dev/null before the chroot, and
1019 * pass the <fd> to this function
1020 */
1021static void stdio_quiet(int fd)
1022{
1023 if (fd < 0)
1024 fd = open("/dev/null", O_RDWR, 0);
1025
1026 if (fd > -1) {
1027 fclose(stdin);
1028 fclose(stdout);
1029 fclose(stderr);
1030
1031 dup2(fd, 0);
1032 dup2(fd, 1);
1033 dup2(fd, 2);
1034 if (fd > 2)
1035 close(fd);
1036 return;
1037 }
1038
1039 ha_alert("Cannot open /dev/null\n");
1040 exit(EXIT_FAILURE);
1041}
1042
1043
Joseph Herlant03420902018-11-15 10:41:50 -08001044/* This function checks if cfg_cfgfiles contains directories.
1045 * If it finds one, it adds all the files (and only files) it contains
1046 * in cfg_cfgfiles in place of the directory (and removes the directory).
1047 * It adds the files in lexical order.
1048 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001049 * It doesn't add files with name starting with '.'
1050 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001051static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001052{
1053 struct wordlist *wl, *wlb;
1054 char *err = NULL;
1055
1056 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1057 struct stat file_stat;
1058 struct dirent **dir_entries = NULL;
1059 int dir_entries_nb;
1060 int dir_entries_it;
1061
1062 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001063 ha_alert("Cannot open configuration file/directory %s : %s\n",
1064 wl->s,
1065 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001066 exit(1);
1067 }
1068
1069 if (!S_ISDIR(file_stat.st_mode))
1070 continue;
1071
1072 /* from this point wl->s is a directory */
1073
1074 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1075 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001076 ha_alert("Cannot open configuration directory %s : %s\n",
1077 wl->s,
1078 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001079 exit(1);
1080 }
1081
1082 /* for each element in the directory wl->s */
1083 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1084 struct dirent *dir_entry = dir_entries[dir_entries_it];
1085 char *filename = NULL;
1086 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1087
1088 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001089 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001090 */
1091 if (dir_entry->d_name[0] == '.' ||
1092 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1093 goto next_dir_entry;
1094
1095 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001096 ha_alert("Cannot load configuration files %s : out of memory.\n",
1097 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001098 exit(1);
1099 }
1100
1101 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001102 ha_alert("Cannot open configuration file %s : %s\n",
1103 wl->s,
1104 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001105 exit(1);
1106 }
1107
1108 /* don't add anything else than regular file in cfg_cfgfiles
1109 * this way we avoid loops
1110 */
1111 if (!S_ISREG(file_stat.st_mode))
1112 goto next_dir_entry;
1113
1114 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001115 ha_alert("Cannot load configuration files %s : %s\n",
1116 filename,
1117 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001118 exit(1);
1119 }
1120
1121next_dir_entry:
1122 free(filename);
1123 free(dir_entry);
1124 }
1125
1126 free(dir_entries);
1127
1128 /* remove the current directory (wl) from cfg_cfgfiles */
1129 free(wl->s);
1130 LIST_DEL(&wl->list);
1131 free(wl);
1132 }
1133
1134 free(err);
1135}
1136
Willy Tarreaubaaee002006-06-26 02:48:02 +02001137/*
William Lallemand73b85e72017-06-01 17:38:51 +02001138 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001139 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001140 * Return an allocated copy of argv
1141 */
1142
1143static char **copy_argv(int argc, char **argv)
1144{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001145 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001146
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02001147 newargv = calloc(argc + 2, sizeof(*newargv));
William Lallemand73b85e72017-06-01 17:38:51 +02001148 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001149 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001150 return NULL;
1151 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001152 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001153
William Lallemanddf6c5a82020-06-04 17:40:23 +02001154 /* first copy argv[0] */
1155 *newargv++ = *argv++;
1156 argc--;
1157
1158 while (argc > 0) {
1159 if (**argv != '-') {
1160 /* non options are copied but will fail in the argument parser */
1161 *newargv++ = *argv++;
1162 argc--;
1163
1164 } else {
1165 char *flag;
1166
1167 flag = *argv + 1;
1168
1169 if (flag[0] == '-' && flag[1] == 0) {
1170 /* "--\0" copy every arguments till the end of argv */
1171 *newargv++ = *argv++;
1172 argc--;
1173
1174 while (argc > 0) {
1175 *newargv++ = *argv++;
1176 argc--;
1177 }
1178 } else {
1179 switch (*flag) {
1180 case 's':
1181 /* -sf / -st and their parameters are ignored */
1182 if (flag[1] == 'f' || flag[1] == 't') {
1183 argc--;
1184 argv++;
1185 /* The list can't contain a negative value since the only
1186 way to know the end of this list is by looking for the
1187 next option or the end of the options */
1188 while (argc > 0 && argv[0][0] != '-') {
1189 argc--;
1190 argv++;
1191 }
William Lallemand398da622020-09-02 16:12:23 +02001192 } else {
1193 argc--;
1194 argv++;
1195
William Lallemanddf6c5a82020-06-04 17:40:23 +02001196 }
1197 break;
1198
1199 case 'x':
1200 /* this option and its parameter are ignored */
1201 argc--;
1202 argv++;
1203 if (argc > 0) {
1204 argc--;
1205 argv++;
1206 }
1207 break;
1208
1209 case 'C':
1210 case 'n':
1211 case 'm':
1212 case 'N':
1213 case 'L':
1214 case 'f':
1215 case 'p':
1216 case 'S':
1217 /* these options have only 1 parameter which must be copied and can start with a '-' */
1218 *newargv++ = *argv++;
1219 argc--;
1220 if (argc == 0)
1221 goto error;
1222 *newargv++ = *argv++;
1223 argc--;
1224 break;
1225 default:
1226 /* for other options just copy them without parameters, this is also done
1227 * for options like "--foo", but this will fail in the argument parser.
1228 * */
1229 *newargv++ = *argv++;
1230 argc--;
1231 break;
1232 }
William Lallemand73b85e72017-06-01 17:38:51 +02001233 }
1234 }
William Lallemand73b85e72017-06-01 17:38:51 +02001235 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001236
William Lallemanddf6c5a82020-06-04 17:40:23 +02001237 return retargv;
1238
1239error:
1240 free(retargv);
1241 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001242}
1243
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001244
1245/* Performs basic random seed initialization. The main issue with this is that
1246 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1247 * which means that there will only be 4 billion possible random sequences once
1248 * srandom() is called, regardless of the internal state. Not calling it is
1249 * even worse as we'll always produce the same randoms sequences. What we do
1250 * here is to create an initial sequence from various entropy sources, hash it
1251 * using SHA1 and keep the resulting 160 bits available globally.
1252 *
1253 * We initialize the current process with the first 32 bits before starting the
1254 * polling loop, where all this will be changed to have process specific and
1255 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001256 *
1257 * Before starting threads, it's still possible to call random() as srandom()
1258 * is initialized from this, but after threads and/or processes are started,
1259 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001260 */
1261static void ha_random_boot(char *const *argv)
1262{
1263 unsigned char message[256];
1264 unsigned char *m = message;
1265 struct timeval tv;
1266 blk_SHA_CTX ctx;
1267 unsigned long l;
1268 int fd;
1269 int i;
1270
1271 /* start with current time as pseudo-random seed */
1272 gettimeofday(&tv, NULL);
1273 write_u32(m, tv.tv_sec); m += 4;
1274 write_u32(m, tv.tv_usec); m += 4;
1275
1276 /* PID and PPID add some OS-based randomness */
1277 write_u16(m, getpid()); m += 2;
1278 write_u16(m, getppid()); m += 2;
1279
1280 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1281 fd = open("/dev/urandom", O_RDONLY);
1282 if (fd >= 0) {
1283 i = read(fd, m, 20);
1284 if (i > 0)
1285 m += i;
1286 close(fd);
1287 }
1288
1289 /* take up to 160 bits bytes from openssl (non-blocking) */
1290#ifdef USE_OPENSSL
1291 if (RAND_bytes(m, 20) == 1)
1292 m += 20;
1293#endif
1294
1295 /* take 160 bits from existing random in case it was already initialized */
1296 for (i = 0; i < 5; i++) {
1297 write_u32(m, random());
1298 m += 4;
1299 }
1300
1301 /* stack address (benefit form operating system's ASLR) */
1302 l = (unsigned long)&m;
1303 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1304
1305 /* argv address (benefit form operating system's ASLR) */
1306 l = (unsigned long)&argv;
1307 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1308
1309 /* use tv_usec again after all the operations above */
1310 gettimeofday(&tv, NULL);
1311 write_u32(m, tv.tv_usec); m += 4;
1312
1313 /*
1314 * At this point, ~84-92 bytes have been used
1315 */
1316
1317 /* finish with the hostname */
1318 strncpy((char *)m, hostname, message + sizeof(message) - m);
1319 m += strlen(hostname);
1320
1321 /* total message length */
1322 l = m - message;
1323
1324 memset(&ctx, 0, sizeof(ctx));
1325 blk_SHA1_Init(&ctx);
1326 blk_SHA1_Update(&ctx, message, l);
1327 blk_SHA1_Final(boot_seed, &ctx);
1328
1329 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001330 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001331}
1332
Willy Tarreau5a023f02019-03-01 14:19:31 +01001333/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1334 * setting, and returns it. It may return -1 meaning "unlimited" if some
1335 * unlimited proxies have been found and the global.maxconn value is not yet
1336 * set. It may also return a value greater than maxconn if it's not yet set.
1337 * Note that a value of zero means there is no need for pipes. -1 is never
1338 * returned if global.maxconn is valid.
1339 */
1340static int compute_ideal_maxpipes()
1341{
1342 struct proxy *cur;
1343 int nbfe = 0, nbbe = 0;
1344 int unlimited = 0;
1345 int pipes;
1346 int max;
1347
1348 for (cur = proxies_list; cur; cur = cur->next) {
1349 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1350 if (cur->cap & PR_CAP_FE) {
1351 max = cur->maxconn;
1352 nbfe += max;
1353 if (!max) {
1354 unlimited = 1;
1355 break;
1356 }
1357 }
1358 if (cur->cap & PR_CAP_BE) {
1359 max = cur->fullconn ? cur->fullconn : global.maxconn;
1360 nbbe += max;
1361 if (!max) {
1362 unlimited = 1;
1363 break;
1364 }
1365 }
1366 }
1367 }
1368
1369 pipes = MAX(nbfe, nbbe);
1370 if (global.maxconn) {
1371 if (pipes > global.maxconn || unlimited)
1372 pipes = global.maxconn;
1373 } else if (unlimited) {
1374 pipes = -1;
1375 }
1376
1377 return pipes >= 4 ? pipes / 4 : pipes;
1378}
1379
Willy Tarreauac350932019-03-01 15:43:14 +01001380/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1381 * rlimits and computes an ideal maxconn. It's meant to be called only when
1382 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001383 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1384 * default 100) is returned as it is expected that it will even run on tight
1385 * environments, and will maintain compatibility with previous packages that
1386 * used to rely on this value as the default one. The system will emit a
1387 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001388 */
1389static int compute_ideal_maxconn()
1390{
1391 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1392 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1393 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001394 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001395 int maxconn;
1396
1397 /* we have to take into account these elements :
1398 * - number of engine_fds, which inflates the number of FD needed per
1399 * connection by this number.
1400 * - number of pipes per connection on average : for the unlimited
1401 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1402 * fixed value of 2*pipes.
1403 * - two FDs per connection
1404 */
1405
1406 /* subtract listeners and checks */
1407 remain -= global.maxsock;
1408
Willy Tarreau3f200852019-03-14 19:13:17 +01001409 /* one epoll_fd/kqueue_fd per thread */
1410 remain -= global.nbthread;
1411
1412 /* one wake-up pipe (2 fd) per thread */
1413 remain -= 2 * global.nbthread;
1414
Willy Tarreauac350932019-03-01 15:43:14 +01001415 /* Fixed pipes values : we only subtract them if they're not larger
1416 * than the remaining FDs because pipes are optional.
1417 */
1418 if (pipes >= 0 && pipes * 2 < remain)
1419 remain -= pipes * 2;
1420
1421 if (pipes < 0) {
1422 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1423 * = maxconn * (2 + 0.5 + engine_fds)
1424 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1425 */
1426 maxconn = 2 * remain / (5 + 2 * engine_fds);
1427 } else {
1428 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1429 * = maxconn * (2 + engine_fds)
1430 */
1431 maxconn = remain / (2 + engine_fds);
1432 }
1433
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001434 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001435}
1436
Willy Tarreaua409f302020-03-10 17:08:53 +01001437/* computes the estimated maxsock value for the given maxconn based on the
1438 * possibly set global.maxpipes and existing partial global.maxsock. It may
1439 * temporarily change global.maxconn for the time needed to propagate the
1440 * computations, and will reset it.
1441 */
1442static int compute_ideal_maxsock(int maxconn)
1443{
1444 int maxpipes = global.maxpipes;
1445 int maxsock = global.maxsock;
1446
1447
1448 if (!maxpipes) {
1449 int old_maxconn = global.maxconn;
1450
1451 global.maxconn = maxconn;
1452 maxpipes = compute_ideal_maxpipes();
1453 global.maxconn = old_maxconn;
1454 }
1455
1456 maxsock += maxconn * 2; /* each connection needs two sockets */
1457 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1458 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1459 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1460
1461 /* compute fd used by async engines */
1462 if (global.ssl_used_async_engines) {
1463 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1464
1465 maxsock += maxconn * sides * global.ssl_used_async_engines;
1466 }
1467 return maxsock;
1468}
1469
Willy Tarreau304e17e2020-03-10 17:54:54 +01001470/* Tests if it is possible to set the current process' RLIMIT_NOFILE to
1471 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1472 * value is accepted, non-zero otherwise. This is used to determine if an
1473 * automatic limit may be applied or not. When it is not, the caller knows that
1474 * the highest we can do is the rlim_max at boot. In case of error, we return
1475 * that the setting is possible, so that we defer the error processing to the
1476 * final stage in charge of enforcing this.
1477 */
1478static int check_if_maxsock_permitted(int maxsock)
1479{
1480 struct rlimit orig_limit, test_limit;
1481 int ret;
1482
1483 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1484 return 1;
1485
1486 /* don't go further if we can't even set to what we have */
1487 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1488 return 1;
1489
1490 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1491 test_limit.rlim_cur = test_limit.rlim_max;
1492 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1493
1494 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1495 return 1;
1496
1497 return ret == 0;
1498}
1499
1500
William Lallemand73b85e72017-06-01 17:38:51 +02001501/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001502 * This function initializes all the necessary variables. It only returns
1503 * if everything is OK. If something fails, it exits.
1504 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001505static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001506{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001507 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001508 char *tmp;
1509 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001510 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001511 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001512 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001513 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001514 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001515 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001516 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001517 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001518
Christopher Faulete3a5e352017-10-24 13:53:54 +02001519 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001520 old_argv = copy_argv(argc, argv);
1521 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001522 ha_alert("failed to copy argv.\n");
1523 exit(1);
1524 }
William Lallemand73b85e72017-06-01 17:38:51 +02001525
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001526 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001527 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001528 exit(1);
1529 }
David du Colombier7af46052012-05-16 14:16:48 +02001530
Emeric Brun2b920a12010-09-23 18:30:22 +02001531 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1532 * the string in case of truncation, and at least FreeBSD appears not to do
1533 * it.
1534 */
1535 memset(hostname, 0, sizeof(hostname));
1536 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001537
1538 if ((localpeer = strdup(hostname)) == NULL) {
1539 ha_alert("Cannot allocate memory for local peer.\n");
1540 exit(EXIT_FAILURE);
1541 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001542 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001543
William Lallemand24c928c2020-01-14 17:58:18 +01001544 /* we were in mworker mode, we should restart in mworker mode */
1545 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1546 global.mode |= MODE_MWORKER;
1547
Willy Tarreaubaaee002006-06-26 02:48:02 +02001548 /*
1549 * Initialize the previously static variables.
1550 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001551
Willy Tarreau173d9952018-01-26 21:48:23 +01001552 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001553 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001554
Willy Tarreaubaaee002006-06-26 02:48:02 +02001555
1556#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001557 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001558#endif
1559
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001560 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001561 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001562 start_date = now;
1563
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001564 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001565
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001566 if (init_acl() != 0)
1567 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001568
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001569 /* Initialise lua. */
1570 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001571
Christopher Fauletff2613e2016-11-09 11:36:17 +01001572 /* Initialize process vars */
1573 vars_init(&global.vars, SCOPE_PROC);
1574
Willy Tarreau43b78992009-01-25 15:42:27 +01001575 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001576#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001577 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001578#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001579#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001580 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001582#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001583 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001584#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001585#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001586 global.tune.options |= GTUNE_USE_EVPORTS;
1587#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001588#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001589 global.tune.options |= GTUNE_USE_SPLICE;
1590#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001591#if defined(USE_GETADDRINFO)
1592 global.tune.options |= GTUNE_USE_GAI;
1593#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001594#if defined(SO_REUSEPORT)
1595 global.tune.options |= GTUNE_USE_REUSEPORT;
1596#endif
Willy Tarreau76cc6992020-07-01 18:49:24 +02001597#ifdef USE_THREAD
1598 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
1599#endif
William Dauchya5194602020-03-28 19:29:58 +01001600 global.tune.options |= GTUNE_STRICT_LIMITS;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001601
1602 pid = getpid();
1603 progname = *argv;
1604 while ((tmp = strchr(progname, '/')) != NULL)
1605 progname = tmp + 1;
1606
Kevinm48936af2010-12-22 16:08:21 +00001607 /* the process name is used for the logs only */
Eric Salama7cea6062020-10-02 11:58:19 +02001608 chunk_initlen(&global.log_tag, strdup(progname), strlen(progname), strlen(progname));
1609 if (b_orig(&global.log_tag) == NULL) {
1610 chunk_destroy(&global.log_tag);
1611 ha_alert("Cannot allocate memory for log_tag.\n");
1612 exit(EXIT_FAILURE);
1613 }
Kevinm48936af2010-12-22 16:08:21 +00001614
Willy Tarreaubaaee002006-06-26 02:48:02 +02001615 argc--; argv++;
1616 while (argc > 0) {
1617 char *flag;
1618
1619 if (**argv == '-') {
1620 flag = *argv+1;
1621
1622 /* 1 arg */
1623 if (*flag == 'v') {
1624 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001625 if (flag[1] == 'v') /* -vv */
1626 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001627 exit(0);
1628 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001629#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001630 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001631 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001632#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001633#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001634 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001635 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001636#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001637#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001638 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001639 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001640#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001641#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001642 else if (*flag == 'd' && flag[1] == 'v')
1643 global.tune.options &= ~GTUNE_USE_EVPORTS;
1644#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001645#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001646 else if (*flag == 'd' && flag[1] == 'S')
1647 global.tune.options &= ~GTUNE_USE_SPLICE;
1648#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001649#if defined(USE_GETADDRINFO)
1650 else if (*flag == 'd' && flag[1] == 'G')
1651 global.tune.options &= ~GTUNE_USE_GAI;
1652#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001653#if defined(SO_REUSEPORT)
1654 else if (*flag == 'd' && flag[1] == 'R')
1655 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1656#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001657 else if (*flag == 'd' && flag[1] == 'V')
1658 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001659 else if (*flag == 'V')
1660 arg_mode |= MODE_VERBOSE;
1661 else if (*flag == 'd' && flag[1] == 'b')
1662 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001663 else if (*flag == 'd' && flag[1] == 'W')
1664 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001665 else if (*flag == 'd' && flag[1] == 'M')
1666 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001667 else if (*flag == 'd' && flag[1] == 'r')
1668 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001669 else if (*flag == 'd')
1670 arg_mode |= MODE_DEBUG;
1671 else if (*flag == 'c')
1672 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001673 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001674 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001675 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001676 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001677#if defined(USE_SYSTEMD)
1678 global.tune.options |= GTUNE_USE_SYSTEMD;
1679#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001680 ha_alert("master-worker mode with systemd support (-Ws) requested, but not compiled. Use master-worker mode (-W) if you are not using Type=notify in your unit file or recompile with USE_SYSTEMD=1.\n\n");
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001681 usage(progname);
1682#endif
1683 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001684 else if (*flag == 'W')
1685 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001686 else if (*flag == 'q')
1687 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001688 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001689 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001690 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001691 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001692 }
William Lallemand4fc09692017-06-19 16:37:19 +02001693 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001694 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001695 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001696
Olivier Houchardf73629d2017-04-05 22:33:04 +02001697 argv++;
1698 argc--;
1699 }
William Lallemande7361152018-10-26 14:47:36 +02001700 else if (*flag == 'S') {
1701 struct wordlist *c;
1702
William Lallemanda6b32492020-06-04 23:49:20 +02001703 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001704 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1705 usage(progname);
1706 }
1707 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1708 ha_alert("Cannot allocate memory\n");
1709 exit(EXIT_FAILURE);
1710 }
1711 LIST_ADD(&mworker_cli_conf, &c->list);
1712
1713 argv++;
1714 argc--;
1715 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001716 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1717 /* list of pids to finish ('f') or terminate ('t') */
1718
1719 if (flag[1] == 'f')
1720 oldpids_sig = SIGUSR1; /* finish then exit */
1721 else
1722 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001723 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001724 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001725 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1726 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001727 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001728 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001729 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001730 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001731 errno = 0;
1732 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1733 if (errno) {
1734 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1735 flag,
1736 *argv, strerror(errno));
1737 exit(1);
1738 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001739 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001740 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001741 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1742 flag, endptr);
1743 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001744 }
Chris Lane236062f2018-02-05 23:15:44 +00001745 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001746 if (oldpids[nb_oldpids] <= 0)
1747 usage(progname);
1748 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001749 }
1750 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001751 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1752 /* now that's a cfgfile list */
1753 argv++; argc--;
1754 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001755 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001756 ha_alert("Cannot load configuration file/directory %s : %s\n",
1757 *argv,
1758 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001759 exit(1);
1760 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001761 argv++; argc--;
1762 }
1763 break;
1764 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001765 else { /* >=2 args */
1766 argv++; argc--;
1767 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001768 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001769
1770 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001771 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001772 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001773 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001774 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001775 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001776 free(localpeer);
1777 if ((localpeer = strdup(*argv)) == NULL) {
1778 ha_alert("Cannot allocate memory for local peer.\n");
1779 exit(EXIT_FAILURE);
1780 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001781 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001782 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001783 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001784 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001785 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001786 ha_alert("Cannot load configuration file/directory %s : %s\n",
1787 *argv,
1788 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001789 exit(1);
1790 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001791 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001792 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001793 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001794 }
1795 }
1796 }
1797 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001798 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001799 argv++; argc--;
1800 }
1801
Christopher Faulete3a5e352017-10-24 13:53:54 +02001802 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001803 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001804
William Lallemand944e6192018-11-21 15:48:31 +01001805 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001806 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001807 global.mode |= MODE_MWORKER_WAIT;
1808 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001809 }
1810
1811 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1812 atexit_flag = 1;
1813 atexit(reexec_on_failure);
1814 }
1815
Willy Tarreau576132e2011-09-10 19:26:56 +02001816 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001817 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001818 exit(1);
1819 }
1820
Willy Tarreaubaaee002006-06-26 02:48:02 +02001821 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001822
1823 init_default_instance();
1824
William Lallemand944e6192018-11-21 15:48:31 +01001825 /* in wait mode, we don't try to read the configuration files */
1826 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001827 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001828
William Lallemand944e6192018-11-21 15:48:31 +01001829 /* handle cfgfiles that are actually directories */
1830 cfgfiles_expand_directories();
1831
1832 if (LIST_ISEMPTY(&cfg_cfgfiles))
1833 usage(progname);
1834
1835
1836 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1837 int ret;
1838
William Lallemand7b302d82019-05-20 11:15:37 +02001839 if (trash->data)
1840 chunk_appendf(trash, ";");
1841
1842 chunk_appendf(trash, "%s", wl->s);
1843
William Lallemand944e6192018-11-21 15:48:31 +01001844 ret = readcfgfile(wl->s);
1845 if (ret == -1) {
1846 ha_alert("Could not open configuration file %s : %s\n",
1847 wl->s, strerror(errno));
1848 exit(1);
1849 }
1850 if (ret & (ERR_ABORT|ERR_FATAL))
1851 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1852 err_code |= ret;
1853 if (err_code & ERR_ABORT)
1854 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001855 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001856
William Lallemand944e6192018-11-21 15:48:31 +01001857 /* do not try to resolve arguments nor to spot inconsistencies when
1858 * the configuration contains fatal errors caused by files not found
1859 * or failed memory allocations.
1860 */
1861 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1862 ha_alert("Fatal errors found in configuration.\n");
1863 exit(1);
1864 }
William Lallemand7b302d82019-05-20 11:15:37 +02001865 if (trash->data)
1866 setenv("HAPROXY_CFGFILES", trash->area, 1);
1867
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001868 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001869 if (global.mode & MODE_MWORKER) {
1870 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001871 struct mworker_proc *tmproc;
1872
William Lallemand482f9a92019-04-12 16:15:00 +02001873 setenv("HAPROXY_MWORKER", "1", 1);
1874
William Lallemand16dd1b32018-11-19 18:46:18 +01001875 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1876
William Lallemandf3a86832019-04-01 11:29:58 +02001877 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001878 if (!tmproc) {
1879 ha_alert("Cannot allocate process structures.\n");
1880 exit(EXIT_FAILURE);
1881 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001882 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001883 tmproc->reloads = 0;
1884 tmproc->relative_pid = 0;
1885 tmproc->pid = pid;
1886 tmproc->timestamp = start_date.tv_sec;
1887 tmproc->ipc_fd[0] = -1;
1888 tmproc->ipc_fd[1] = -1;
1889
1890 proc_self = tmproc;
1891
1892 LIST_ADDQ(&proc_list, &tmproc->list);
1893 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001894
1895 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001896
William Lallemandf3a86832019-04-01 11:29:58 +02001897 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001898 if (!tmproc) {
1899 ha_alert("Cannot allocate process structures.\n");
1900 exit(EXIT_FAILURE);
1901 }
1902
William Lallemand8f7069a2019-04-12 16:09:23 +02001903 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001904 tmproc->pid = -1;
1905 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001906 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001907 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001908 tmproc->ipc_fd[0] = -1;
1909 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001910
1911 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1912 exit(EXIT_FAILURE);
1913 }
1914
1915 LIST_ADDQ(&proc_list, &tmproc->list);
1916 }
William Lallemand944e6192018-11-21 15:48:31 +01001917 }
1918 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1919 struct wordlist *it, *c;
1920
William Lallemand1b663612018-10-26 14:47:33 +02001921 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001922
William Lallemande7361152018-10-26 14:47:36 +02001923
William Lallemand550db6d2018-11-06 17:37:12 +01001924 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001925
William Lallemand550db6d2018-11-06 17:37:12 +01001926 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001927 ha_alert("Can't create the master's CLI.\n");
1928 exit(EXIT_FAILURE);
1929 }
William Lallemande7361152018-10-26 14:47:36 +02001930
William Lallemand550db6d2018-11-06 17:37:12 +01001931 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1932
1933 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1934 ha_alert("Can't create the master's CLI.\n");
1935 exit(EXIT_FAILURE);
1936 }
1937 LIST_DEL(&c->list);
1938 free(c->s);
1939 free(c);
1940 }
1941 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001942 }
1943
Willy Tarreaubb925012009-07-23 13:36:36 +02001944 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001945 for (px = proxies_list; px; px = px->next) {
1946 struct server *srv;
1947 struct post_proxy_check_fct *ppcf;
1948 struct post_server_check_fct *pscf;
1949
1950 list_for_each_entry(pscf, &post_server_check_list, list) {
1951 for (srv = px->srv; srv; srv = srv->next)
1952 err_code |= pscf->fct(srv);
1953 }
1954 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1955 err_code |= ppcf->fct(px);
1956 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001957 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001958 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001959 exit(1);
1960 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001961
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01001962 err_code |= pattern_finalize_config();
1963 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1964 ha_alert("Failed to finalize pattern config.\n");
1965 exit(1);
1966 }
Willy Tarreau0f936722019-04-11 14:47:08 +02001967
Willy Tarreau70060452015-12-14 12:46:07 +01001968 /* recompute the amount of per-process memory depending on nbproc and
1969 * the shared SSL cache size (allowed to exist in all processes).
1970 */
1971 if (global.rlimit_memmax_all) {
1972#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1973 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1974
1975 global.rlimit_memmax =
1976 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1977 ssl_cache_bytes) / global.nbproc +
1978 ssl_cache_bytes + 1048575LL) / 1048576LL;
1979#else
1980 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1981#endif
1982 }
1983
Willy Tarreaue5733232019-05-22 19:24:06 +02001984#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001985 err_code |= netns_init();
1986 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001987 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001988 exit(1);
1989 }
1990#endif
1991
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001992 /* Apply server states */
1993 apply_server_state();
1994
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001995 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001996 srv_compute_all_admin_states(px);
1997
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001998 /* Apply servers' configured address */
1999 err_code |= srv_init_addr();
2000 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002001 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002002 exit(1);
2003 }
2004
Willy Tarreau3eb10b82020-04-15 16:42:39 +02002005 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
2006 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
2007 exit(1);
2008 }
2009
Willy Tarreaubaaee002006-06-26 02:48:02 +02002010 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002011 struct peers *pr;
2012 struct proxy *px;
2013
Willy Tarreaubebd2122020-04-15 16:06:11 +02002014 if (warned & WARN_ANY)
2015 qfprintf(stdout, "Warnings were found.\n");
2016
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002017 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002018 if (pr->peers_fe)
2019 break;
2020
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002021 for (px = proxies_list; px; px = px->next)
Willy Tarreauc3914d42020-09-24 08:39:22 +02002022 if (!px->disabled && px->li_all)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002023 break;
2024
2025 if (pr || px) {
2026 /* At least one peer or one listener has been found */
2027 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02002028 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002029 }
2030 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2031 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002032 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002033
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002034 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002035 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002036
Willy Tarreaue6945732016-12-21 19:57:00 +01002037 list_for_each_entry(pcf, &post_check_list, list) {
2038 err_code |= pcf->fct();
2039 if (err_code & (ERR_ABORT|ERR_FATAL))
2040 exit(1);
2041 }
2042
Willy Tarreaubaaee002006-06-26 02:48:02 +02002043 if (cfg_maxconn > 0)
2044 global.maxconn = cfg_maxconn;
2045
Willy Tarreau8d687d82019-03-01 09:39:42 +01002046 if (global.stats_fe)
2047 global.maxsock += global.stats_fe->maxconn;
2048
2049 if (cfg_peers) {
2050 /* peers also need to bypass global maxconn */
2051 struct peers *p = cfg_peers;
2052
2053 for (p = cfg_peers; p; p = p->next)
2054 if (p->peers_fe)
2055 global.maxsock += p->peers_fe->maxconn;
2056 }
2057
Willy Tarreaubaaee002006-06-26 02:48:02 +02002058 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002059 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002060 global.pidfile = strdup(cfg_pidfile);
2061 }
2062
Willy Tarreaud0256482015-01-15 21:45:22 +01002063 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002064 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2065 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2066 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2067 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002068 *
2069 * If memmax is set, then it depends on which values are set. If
2070 * maxsslconn is set, we use memmax to determine how many cleartext
2071 * connections may be added, and set maxconn to the sum of the two.
2072 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2073 * the remaining amount of memory between memmax and the cleartext
2074 * connections. If neither are set, then it is considered that all
2075 * connections are SSL-capable, and maxconn is computed based on this,
2076 * then maxsslconn accordingly. We need to know if SSL is used on the
2077 * frontends, backends, or both, because when it's used on both sides,
2078 * we need twice the value for maxsslconn, but we only count the
2079 * handshake once since it is not performed on the two sides at the
2080 * same time (frontend-side is terminated before backend-side begins).
2081 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002082 * ssl_handshake_cost during its initialization. In any case, if
2083 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2084 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002085 */
Willy Tarreauac350932019-03-01 15:43:14 +01002086 ideal_maxconn = compute_ideal_maxconn();
2087
Willy Tarreaud0256482015-01-15 21:45:22 +01002088 if (!global.rlimit_memmax) {
2089 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002090 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002091 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2092 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2093 }
2094 }
2095#ifdef USE_OPENSSL
2096 else if (!global.maxconn && !global.maxsslconn &&
2097 (global.ssl_used_frontend || global.ssl_used_backend)) {
2098 /* memmax is set, compute everything automatically. Here we want
2099 * to ensure that all SSL connections will be served. We take
2100 * care of the number of sides where SSL is used, and consider
2101 * the worst case : SSL used on both sides and doing a handshake
2102 * simultaneously. Note that we can't have more than maxconn
2103 * handshakes at a time by definition, so for the worst case of
2104 * two SSL conns per connection, we count a single handshake.
2105 */
2106 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2107 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002108 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002109
2110 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2111 mem -= global.maxzlibmem;
2112 mem = mem * MEM_USABLE_RATIO;
2113
Willy Tarreau304e17e2020-03-10 17:54:54 +01002114 /* Principle: we test once to set maxconn according to the free
2115 * memory. If it results in values the system rejects, we try a
2116 * second time by respecting rlim_fd_max. If it fails again, we
2117 * go back to the initial value and will let the final code
2118 * dealing with rlimit report the error. That's up to 3 attempts.
2119 */
2120 do {
2121 global.maxconn = mem /
2122 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2123 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2124 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002125
Willy Tarreau304e17e2020-03-10 17:54:54 +01002126 if (retried == 1)
2127 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2128 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002129#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002130 if (global.maxconn > SYSTEM_MAXCONN)
2131 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002132#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002133 global.maxsslconn = sides * global.maxconn;
2134
2135 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2136 break;
2137 } while (retried++ < 2);
2138
Willy Tarreaud0256482015-01-15 21:45:22 +01002139 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2140 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2141 global.maxconn, global.maxsslconn);
2142 }
2143 else if (!global.maxsslconn &&
2144 (global.ssl_used_frontend || global.ssl_used_backend)) {
2145 /* memmax and maxconn are known, compute maxsslconn automatically.
2146 * maxsslconn being forced, we don't know how many of it will be
2147 * on each side if both sides are being used. The worst case is
2148 * when all connections use only one SSL instance because
2149 * handshakes may be on two sides at the same time.
2150 */
2151 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2152 int64_t mem = global.rlimit_memmax * 1048576ULL;
2153 int64_t sslmem;
2154
2155 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2156 mem -= global.maxzlibmem;
2157 mem = mem * MEM_USABLE_RATIO;
2158
Willy Tarreau87b09662015-04-03 00:22:06 +02002159 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002160 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2161 global.maxsslconn = round_2dig(global.maxsslconn);
2162
2163 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002164 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2165 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2166 "without SSL is %d, but %d was found and SSL is in use.\n",
2167 global.rlimit_memmax,
2168 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2169 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002170 exit(1);
2171 }
2172
2173 if (global.maxsslconn > sides * global.maxconn)
2174 global.maxsslconn = sides * global.maxconn;
2175
2176 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2177 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2178 }
2179#endif
2180 else if (!global.maxconn) {
2181 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2182 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2183 int64_t mem = global.rlimit_memmax * 1048576ULL;
2184 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002185 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002186
2187 if (global.ssl_used_frontend || global.ssl_used_backend)
2188 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2189
2190 mem -= global.maxzlibmem;
2191 mem = mem * MEM_USABLE_RATIO;
2192
2193 clearmem = mem;
2194 if (sides)
2195 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2196
Willy Tarreau304e17e2020-03-10 17:54:54 +01002197 /* Principle: we test once to set maxconn according to the free
2198 * memory. If it results in values the system rejects, we try a
2199 * second time by respecting rlim_fd_max. If it fails again, we
2200 * go back to the initial value and will let the final code
2201 * dealing with rlimit report the error. That's up to 3 attempts.
2202 */
2203 do {
2204 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2205 if (retried == 1)
2206 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2207 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002208#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002209 if (global.maxconn > SYSTEM_MAXCONN)
2210 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002211#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002212
Willy Tarreau304e17e2020-03-10 17:54:54 +01002213 if (clearmem <= 0 || !global.maxconn) {
2214 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2215 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2216 "is %d, but %d was found.\n",
2217 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002218 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002219 global.maxsslconn);
2220 exit(1);
2221 }
2222
2223 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2224 break;
2225 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002226
2227 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2228 if (sides && global.maxsslconn > sides * global.maxconn) {
2229 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2230 "to be limited to %d. Better reduce global.maxsslconn to get more "
2231 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2232 }
2233 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2234 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002235 }
2236
Willy Tarreaua409f302020-03-10 17:08:53 +01002237 global.maxsock = compute_ideal_maxsock(global.maxconn);
2238 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002239 if (!global.maxpipes)
2240 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002241
Olivier Houchard88698d92019-04-16 19:07:22 +02002242 /* update connection pool thresholds */
2243 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2244 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2245
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002246 proxy_adjust_all_maxconn();
2247
Willy Tarreau1db37712007-06-03 17:16:49 +02002248 if (global.tune.maxpollevents <= 0)
2249 global.tune.maxpollevents = MAX_POLL_EVENTS;
2250
Olivier Houchard1599b802018-05-24 18:59:04 +02002251 if (global.tune.runqueue_depth <= 0)
2252 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2253
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002254 if (global.tune.recv_enough == 0)
2255 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2256
Willy Tarreau27a674e2009-08-17 07:23:33 +02002257 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2258 global.tune.maxrewrite = global.tune.bufsize / 2;
2259
Willy Tarreaubaaee002006-06-26 02:48:02 +02002260 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2261 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002262 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002263 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2264 }
2265
William Lallemand095ba4c2017-06-01 17:38:50 +02002266 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002267 /* command line daemon mode inhibits foreground and debug modes mode */
2268 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002269 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002270 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002271
2272 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002273
William Lallemand095ba4c2017-06-01 17:38:50 +02002274 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002275 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002276 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002277 }
2278
William Lallemand095ba4c2017-06-01 17:38:50 +02002279 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002280 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002281 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 +02002282 global.nbproc = 1;
2283 }
2284
2285 if (global.nbproc < 1)
2286 global.nbproc = 1;
2287
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002288 if (global.nbthread < 1)
2289 global.nbthread = 1;
2290
Christopher Faulet3ef26392017-08-29 16:46:57 +02002291 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002292 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002293 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002294 exit(1);
2295 }
2296
Christopher Faulet96d44832017-11-14 22:02:30 +01002297 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002298 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002299 exit(1);
2300 }
2301
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002302 /*
2303 * Note: we could register external pollers here.
2304 * Built-in pollers have been registered before main().
2305 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002306
Willy Tarreau43b78992009-01-25 15:42:27 +01002307 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002308 disable_poller("kqueue");
2309
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002310 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2311 disable_poller("evports");
2312
Willy Tarreau43b78992009-01-25 15:42:27 +01002313 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002314 disable_poller("epoll");
2315
Willy Tarreau43b78992009-01-25 15:42:27 +01002316 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002317 disable_poller("poll");
2318
Willy Tarreau43b78992009-01-25 15:42:27 +01002319 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002320 disable_poller("select");
2321
2322 /* Note: we could disable any poller by name here */
2323
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002324 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002325 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002326 fprintf(stderr, "\n");
2327 list_filters(stderr);
2328 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002329
Willy Tarreau4f60f162007-04-08 16:39:58 +02002330 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002331 ha_alert("No polling mechanism available.\n"
2332 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2333 " is too low on this platform to support maxconn and the number of listeners\n"
2334 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2335 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2336 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2337 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2338 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2339 " check build settings using 'haproxy -vv'.\n\n",
2340 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002341 exit(1);
2342 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002343 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2344 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002345 }
2346
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002347 if (!global.node)
2348 global.node = strdup(hostname);
2349
Willy Tarreau02b092f2020-10-07 18:36:54 +02002350 /* stop disabled proxies */
2351 for (px = proxies_list; px; px = px->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02002352 if (px->disabled)
Willy Tarreau02b092f2020-10-07 18:36:54 +02002353 stop_proxy(px);
2354 }
2355
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002356 if (!hlua_post_init())
2357 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002358
Maxime de Roucy0f503922016-05-13 23:52:55 +02002359 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002360}
2361
Simon Horman6fb82592011-07-15 13:14:11 +09002362static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002363{
Simon Hormanac821422011-07-15 13:14:09 +09002364 struct acl_term_suite *suite, *suiteb;
2365 struct acl_term *term, *termb;
2366
Simon Horman6fb82592011-07-15 13:14:11 +09002367 if (!cond)
2368 return;
2369
2370 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2371 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2372 LIST_DEL(&term->list);
2373 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002374 }
Simon Horman6fb82592011-07-15 13:14:11 +09002375 LIST_DEL(&suite->list);
2376 free(suite);
2377 }
2378
2379 free(cond);
2380}
2381
Christopher Fauletcb550132019-12-17 11:25:46 +01002382static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002383{
Christopher Fauletcb550132019-12-17 11:25:46 +01002384 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002385
Christopher Fauletcb550132019-12-17 11:25:46 +01002386 list_for_each_entry_safe(rule, ruleb, rules, list) {
2387 LIST_DEL(&rule->list);
2388 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002389 if (rule->release_ptr)
2390 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002391 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002392 }
2393}
2394
Simon Horman6fb82592011-07-15 13:14:11 +09002395static void deinit_stick_rules(struct list *rules)
2396{
2397 struct sticking_rule *rule, *ruleb;
2398
2399 list_for_each_entry_safe(rule, ruleb, rules, list) {
2400 LIST_DEL(&rule->list);
2401 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002402 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002403 free(rule);
2404 }
2405}
2406
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002407void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002408{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002409 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002410 struct cap_hdr *h,*h_next;
2411 struct server *s,*s_next;
2412 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002413 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002414 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002415 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002416 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002417 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002418 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002419 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002420 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002421 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002422 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002423 struct build_opts_str *bol, *bolb;
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002424 struct post_deinit_fct *pdf, *pdfb;
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002425 struct proxy_deinit_fct *pxdf, *pxdfb;
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002426 struct server_deinit_fct *srvdf, *srvdfb;
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002427 struct per_thread_init_fct *tif, *tifb;
2428 struct per_thread_deinit_fct *tdf, *tdfb;
2429 struct per_thread_alloc_fct *taf, *tafb;
2430 struct per_thread_free_fct *tff, *tffb;
Tim Duesterhus34bef072020-07-04 11:49:50 +02002431 struct post_server_check_fct *pscf, *pscfb;
Tim Duesterhusfc854942020-09-10 19:46:42 +02002432 struct post_check_fct *pcf, *pcfb;
Tim Duesterhus53508d62020-09-10 19:46:40 +02002433 struct post_proxy_check_fct *ppcf, *ppcfb;
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002434 int cur_fd;
2435
2436 /* At this point the listeners state is weird:
2437 * - most listeners are still bound and referenced in their protocol
2438 * - some might be zombies that are not in their proto anymore, but
2439 * still appear in their proxy's listeners with a valid FD.
2440 * - some might be stopped and still appear in their proxy as FD #-1
2441 * - among all of them, some might be inherited hence shared and we're
2442 * not allowed to pause them or whatever, we must just close them.
2443 * - finally some are not listeners (pipes, logs, stdout, etc) and
2444 * must be left intact.
2445 *
2446 * The safe way to proceed is to unbind (and close) whatever is not yet
2447 * unbound so that no more receiver/listener remains alive. Then close
2448 * remaining listener FDs, which correspond to zombie listeners (those
2449 * belonging to disabled proxies that were in another process).
2450 * objt_listener() would be cleaner here but not converted yet.
2451 */
2452 protocol_unbind_all();
2453
2454 for (cur_fd = 0; cur_fd < global.maxsock; cur_fd++) {
2455 if (!fdtab[cur_fd].owner)
2456 continue;
2457
2458 if (fdtab[cur_fd].iocb == listener_accept) {
2459 struct listener *l = fdtab[cur_fd].owner;
2460
2461 BUG_ON(l->state != LI_INIT);
2462 unbind_listener(l);
2463 }
2464 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002465
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002466 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002467 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002468 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002469 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002470 free(p->cookie_name);
2471 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002472 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002473 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002474 free(p->capture_name);
2475 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002476 free(p->rdp_cookie_name);
William Lallemandefc5a9d2020-08-07 14:48:37 +02002477 free(p->invalid_rep);
2478 free(p->invalid_req);
Willy Tarreau62a61232013-04-12 18:13:46 +02002479 if (p->conf.logformat_string != default_http_log_format &&
2480 p->conf.logformat_string != default_tcp_log_format &&
2481 p->conf.logformat_string != clf_http_log_format)
2482 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002483
Willy Tarreau62a61232013-04-12 18:13:46 +02002484 free(p->conf.lfs_file);
2485 free(p->conf.uniqueid_format_string);
Tim Duesterhus18c63592020-07-04 11:49:42 +02002486 istfree(&p->header_unique_id);
Willy Tarreau62a61232013-04-12 18:13:46 +02002487 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002488 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2489 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002490
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002491 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2492 free(p->conf.logformat_sd_string);
2493 free(p->conf.lfsd_file);
2494
Willy Tarreaub80c2302007-11-30 20:51:32 +01002495 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2496 LIST_DEL(&cond->list);
2497 prune_acl_cond(cond);
2498 free(cond);
2499 }
2500
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002501 EXTRA_COUNTERS_FREE(p->extra_counters_fe);
2502 EXTRA_COUNTERS_FREE(p->extra_counters_be);
2503
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002504 /* build a list of unique uri_auths */
2505 if (!ua)
2506 ua = p->uri_auth;
2507 else {
2508 /* check if p->uri_auth is unique */
2509 for (uap = ua; uap; uap=uap->next)
2510 if (uap == p->uri_auth)
2511 break;
2512
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002513 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002514 /* add it, if it is */
2515 p->uri_auth->next = ua;
2516 ua = p->uri_auth;
2517 }
2518 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002519
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002520 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2521 LIST_DEL(&acl->list);
2522 prune_acl(acl);
2523 free(acl);
2524 }
2525
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002526 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2527 LIST_DEL(&srule->list);
2528 prune_acl_cond(srule->cond);
Tim Duesterhus826cf072020-07-04 11:49:44 +02002529 list_for_each_entry_safe(lf, lfb, &srule->expr, list) {
2530 LIST_DEL(&lf->list);
2531 release_sample_expr(lf->expr);
2532 free(lf->arg);
2533 free(lf);
2534 }
Tim Duesterhus6fb74a12020-07-04 11:49:43 +02002535 free(srule->file);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002536 free(srule->cond);
2537 free(srule);
2538 }
2539
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002540 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2541 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002542 if (rule->cond) {
2543 prune_acl_cond(rule->cond);
2544 free(rule->cond);
2545 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002546 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002547 free(rule);
2548 }
2549
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002550 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2551 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002552 if (rdr->cond) {
2553 prune_acl_cond(rdr->cond);
2554 free(rdr->cond);
2555 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002556 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002557 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2558 LIST_DEL(&lf->list);
2559 free(lf);
2560 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002561 free(rdr);
2562 }
2563
William Lallemand0f99e342011-10-12 17:50:54 +02002564 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2565 LIST_DEL(&log->list);
2566 free(log);
2567 }
2568
William Lallemand723b73a2012-02-08 16:37:49 +01002569 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2570 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002571 release_sample_expr(lf->expr);
2572 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002573 free(lf);
2574 }
2575
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002576 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2577 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002578 release_sample_expr(lf->expr);
2579 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002580 free(lf);
2581 }
2582
Tim Duesterhus79765782020-07-04 11:49:40 +02002583 list_for_each_entry_safe(lf, lfb, &p->format_unique_id, list) {
2584 LIST_DEL(&lf->list);
2585 release_sample_expr(lf->expr);
2586 free(lf->arg);
2587 free(lf);
2588 }
2589
Christopher Fauletcb550132019-12-17 11:25:46 +01002590 deinit_act_rules(&p->tcp_req.inspect_rules);
2591 deinit_act_rules(&p->tcp_rep.inspect_rules);
2592 deinit_act_rules(&p->tcp_req.l4_rules);
2593 deinit_act_rules(&p->tcp_req.l5_rules);
2594 deinit_act_rules(&p->http_req_rules);
2595 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002596 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002597
Simon Horman6fb82592011-07-15 13:14:11 +09002598 deinit_stick_rules(&p->storersp_rules);
2599 deinit_stick_rules(&p->sticking_rules);
2600
Willy Tarreaubaaee002006-06-26 02:48:02 +02002601 h = p->req_cap;
2602 while (h) {
2603 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002604 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002605 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002606 free(h);
2607 h = h_next;
2608 }/* end while(h) */
2609
2610 h = p->rsp_cap;
2611 while (h) {
2612 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002613 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002614 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002615 free(h);
2616 h = h_next;
2617 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002618
Willy Tarreaubaaee002006-06-26 02:48:02 +02002619 s = p->srv;
2620 while (s) {
2621 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002622
Dragan Dosen026ef572019-04-30 00:56:20 +02002623
Willy Tarreauf6562792019-05-07 19:05:35 +02002624 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002625
Willy Tarreaua534fea2008-08-03 12:19:50 +02002626 free(s->id);
2627 free(s->cookie);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002628 free(s->hostname);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002629 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002630 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002631 free(s->idle_conns);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002632 free(s->safe_conns);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002633 free(s->available_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002634 free(s->curr_idle_thr);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002635 free(s->resolvers_id);
Willy Tarreau17d45382016-12-22 21:16:08 +01002636
Christopher Fauletf61f33a2020-03-27 18:55:49 +01002637 if (s->use_ssl == 1 || s->check.use_ssl == 1 || (s->proxy->options & PR_O_TCPCHK_SSL)) {
Willy Tarreau17d45382016-12-22 21:16:08 +01002638 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2639 xprt_get(XPRT_SSL)->destroy_srv(s);
2640 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002641 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002642
2643 list_for_each_entry(srvdf, &server_deinit_list, list)
2644 srvdf->fct(s);
2645
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002646 EXTRA_COUNTERS_FREE(s->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002647 free(s);
2648 s = s_next;
2649 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002650
Willy Tarreau4348fad2012-09-20 16:48:07 +02002651 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreau4348fad2012-09-20 16:48:07 +02002652 LIST_DEL(&l->by_fe);
2653 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002654 free(l->name);
2655 free(l->counters);
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002656
2657 EXTRA_COUNTERS_FREE(l->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002658 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002659 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002660
Willy Tarreau4348fad2012-09-20 16:48:07 +02002661 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002662 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002663 if (bind_conf->xprt->destroy_bind_conf)
2664 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002665 free(bind_conf->file);
2666 free(bind_conf->arg);
2667 LIST_DEL(&bind_conf->by_fe);
2668 free(bind_conf);
2669 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002670
Christopher Fauletd7c91962015-04-30 11:48:27 +02002671 flt_deinit(p);
2672
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002673 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2674 pxdf->fct(p);
2675
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002676 free(p->desc);
2677 free(p->fwdfor_hdr_name);
2678
Olivier Houchard3f795f72019-04-17 22:51:06 +02002679 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002680
Willy Tarreaubafbe012017-11-24 17:34:44 +01002681 pool_destroy(p->req_cap_pool);
2682 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002683 if (p->table)
2684 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002685
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002686 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002687 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002688 HA_SPIN_DESTROY(&p0->lbprm.lock);
2689 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002690 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002691 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002692
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002693 while (ua) {
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002694 struct stat_scope *scope, *scopep;
2695
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002696 uap = ua;
2697 ua = ua->next;
2698
Willy Tarreaua534fea2008-08-03 12:19:50 +02002699 free(uap->uri_prefix);
2700 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002701 free(uap->node);
2702 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002703
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002704 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002705 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002706
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002707 scope = uap->scope;
2708 while (scope) {
2709 scopep = scope;
2710 scope = scope->next;
2711
2712 free(scopep->px_id);
2713 free(scopep);
2714 }
2715
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002716 free(uap);
2717 }
2718
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002719 userlist_free(userlist);
2720
David Carlier834cb2e2015-09-25 12:02:25 +01002721 cfg_unregister_sections();
2722
Christopher Faulet0132d062017-07-26 15:33:35 +02002723 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002724
Willy Tarreau05554e62016-12-21 20:46:26 +01002725 list_for_each_entry(pdf, &post_deinit_list, list)
2726 pdf->fct();
2727
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002728 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002729 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002730 free(global.chroot); global.chroot = NULL;
2731 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002732 free(global.node); global.node = NULL;
2733 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002734 free(oldpids); oldpids = NULL;
Tim Duesterhus9e0c2f32020-09-10 19:46:39 +02002735 free(old_argv); old_argv = NULL;
Dragan Dosen4f014152020-06-18 16:56:47 +02002736 free(localpeer); localpeer = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002737 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002738 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002739
William Lallemand0f99e342011-10-12 17:50:54 +02002740 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2741 LIST_DEL(&log->list);
2742 free(log);
2743 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002744 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002745 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002746 LIST_DEL(&wl->list);
2747 free(wl);
2748 }
2749
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002750 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2751 if (bol->must_free)
2752 free((void *)bol->str);
2753 LIST_DEL(&bol->list);
2754 free(bol);
2755 }
2756
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002757 list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
2758 LIST_DEL(&pxdf->list);
2759 free(pxdf);
2760 }
2761
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002762 list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
2763 LIST_DEL(&pdf->list);
2764 free(pdf);
2765 }
2766
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002767 list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
2768 LIST_DEL(&srvdf->list);
2769 free(srvdf);
2770 }
2771
Tim Duesterhusfc854942020-09-10 19:46:42 +02002772 list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
2773 LIST_DEL(&pcf->list);
2774 free(pcf);
2775 }
2776
Tim Duesterhus34bef072020-07-04 11:49:50 +02002777 list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
2778 LIST_DEL(&pscf->list);
2779 free(pscf);
2780 }
2781
Tim Duesterhus53508d62020-09-10 19:46:40 +02002782 list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
2783 LIST_DEL(&ppcf->list);
2784 free(ppcf);
2785 }
2786
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002787 list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
2788 LIST_DEL(&tif->list);
2789 free(tif);
2790 }
2791
2792 list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
2793 LIST_DEL(&tdf->list);
2794 free(tdf);
2795 }
2796
2797 list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
2798 LIST_DEL(&taf->list);
2799 free(taf);
2800 }
2801
2802 list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
2803 LIST_DEL(&tff->list);
2804 free(tff);
2805 }
2806
Christopher Fauletff2613e2016-11-09 11:36:17 +01002807 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002808 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002809 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002810} /* end deinit() */
2811
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002812__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002813{
2814 deinit();
2815 exit(status);
2816}
William Lallemand72160322018-11-06 17:37:16 +01002817
Willy Tarreau918ff602011-07-25 16:33:49 +02002818/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002819void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002820{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002821 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002822
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002823 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002824 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002825 wake_expired_tasks();
2826
William Lallemand1aab50b2018-06-07 09:46:01 +02002827 /* check if we caught some signals and process them in the
2828 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002829 if (signal_queue_len && tid == 0) {
2830 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002831 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002832 }
2833
2834 /* Process a few tasks */
2835 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002836
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002837 /* also stop if we failed to cleanly stop all tasks */
2838 if (killed > 1)
2839 break;
2840
Willy Tarreau10146c92015-04-13 20:44:19 +02002841 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002842 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002843 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002844 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002845 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002846 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2847 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002848 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002849 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002850 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002851 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002852 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002853 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002854
Willy Tarreau4f46a352020-03-23 09:27:28 +01002855 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002856 int i;
2857
2858 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002859 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2860 /* notify all threads that stopping was just set */
2861 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002862 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002863 wake_thread(i);
2864 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002865 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002866
2867 /* stop when there's nothing left to do */
2868 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002869 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2870 /* wake all threads waiting on jobs==0 */
2871 for (i = 0; i < global.nbthread; i++)
2872 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2873 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002874 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002875 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002876 }
2877
Willy Tarreauc49ba522019-12-11 08:12:23 +01002878 /* If we have to sleep, measure how long */
2879 next = wake ? TICK_ETERNITY : next_timer_expiry();
2880
Willy Tarreau58b458d2008-06-29 22:40:23 +02002881 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002882 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002883
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002884 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002885 }
2886}
2887
Christopher Faulet1d17c102017-08-29 15:38:48 +02002888static void *run_thread_poll_loop(void *data)
2889{
Willy Tarreau082b6282019-05-22 14:42:12 +02002890 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002891 struct per_thread_init_fct *ptif;
2892 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002893 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002894 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002895 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2896 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002897
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002898 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002899 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002900
Willy Tarreauf6178242019-05-21 19:46:58 +02002901#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002902#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002903 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002904#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002905 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002906#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002907#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002908 /* Now, initialize one thread init at a time. This is better since
2909 * some init code is a bit tricky and may release global resources
2910 * after reallocating them locally. This will also ensure there is
2911 * no race on file descriptors allocation.
2912 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002913#ifdef USE_THREAD
2914 pthread_mutex_lock(&init_mutex);
2915#endif
2916 /* The first thread must set the number of threads left */
2917 if (!init_left)
2918 init_left = global.nbthread;
2919 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002920
Christopher Faulet1d17c102017-08-29 15:38:48 +02002921 tv_update_date(-1,-1);
2922
Willy Tarreau082b6282019-05-22 14:42:12 +02002923 /* per-thread alloc calls performed here are not allowed to snoop on
2924 * other threads, so they are free to initialize at their own rhythm
2925 * as long as they act as if they were alone. None of them may rely
2926 * on resources initialized by the other ones.
2927 */
2928 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2929 if (!ptaf->fct()) {
2930 ha_alert("failed to allocate resources for thread %u.\n", tid);
2931 exit(1);
2932 }
2933 }
2934
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002935 /* per-thread init calls performed here are not allowed to snoop on
2936 * other threads, so they are free to initialize at their own rhythm
2937 * as long as they act as if they were alone.
2938 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002939 list_for_each_entry(ptif, &per_thread_init_list, list) {
2940 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002941 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002942 exit(1);
2943 }
2944 }
2945
Willy Tarreau71092822019-06-10 09:51:04 +02002946 /* enabling protocols will result in fd_insert() calls to be performed,
2947 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002948 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002949 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002950 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002951 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002952
Willy Tarreau34a150c2019-06-11 09:16:41 +02002953#ifdef USE_THREAD
2954 pthread_cond_broadcast(&init_cond);
2955 pthread_mutex_unlock(&init_mutex);
2956
2957 /* now wait for other threads to finish starting */
2958 pthread_mutex_lock(&init_mutex);
2959 while (init_left)
2960 pthread_cond_wait(&init_cond, &init_mutex);
2961 pthread_mutex_unlock(&init_mutex);
2962#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002963
Willy Tarreaua45a8b52019-12-06 16:31:45 +01002964#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
2965 /* Let's refrain from using setuid executables. This way the impact of
2966 * an eventual vulnerability in a library remains limited. It may
2967 * impact external checks but who cares about them anyway ? In the
2968 * worst case it's possible to disable the option. Obviously we do this
2969 * in workers only. We can't hard-fail on this one as it really is
2970 * implementation dependent though we're interested in feedback, hence
2971 * the warning.
2972 */
2973 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
2974 static int warn_fail;
2975 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
2976 ha_warning("Failed to disable setuid, please report to developers with detailed "
2977 "information about your operating system. You can silence this warning "
2978 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
2979 }
2980 }
2981#endif
2982
Willy Tarreaud96f1122019-12-03 07:07:36 +01002983#if defined(RLIMIT_NPROC)
2984 /* all threads have started, it's now time to prevent any new thread
2985 * or process from starting. Obviously we do this in workers only. We
2986 * can't hard-fail on this one as it really is implementation dependent
2987 * though we're interested in feedback, hence the warning.
2988 */
2989 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
2990 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
2991 static int warn_fail;
2992
2993 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
2994 ha_warning("Failed to disable forks, please report to developers with detailed "
2995 "information about your operating system. You can silence this warning "
2996 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
2997 }
2998 }
2999#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003000 run_poll_loop();
3001
3002 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
3003 ptdf->fct();
3004
Willy Tarreau082b6282019-05-22 14:42:12 +02003005 list_for_each_entry(ptff, &per_thread_free_list, list)
3006 ptff->fct();
3007
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003008#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01003009 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003010 if (tid > 0)
3011 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003012#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003013 return NULL;
3014}
Christopher Faulet1d17c102017-08-29 15:38:48 +02003015
William Dauchyf9af9d72019-11-17 15:47:16 +01003016/* set uid/gid depending on global settings */
3017static void set_identity(const char *program_name)
3018{
3019 if (global.gid) {
3020 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
3021 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3022 " without 'uid'/'user' is generally useless.\n", program_name);
3023
3024 if (setgid(global.gid) == -1) {
3025 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
3026 protocol_unbind_all();
3027 exit(1);
3028 }
3029 }
3030
3031 if (global.uid && setuid(global.uid) == -1) {
3032 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
3033 protocol_unbind_all();
3034 exit(1);
3035 }
3036}
3037
Willy Tarreaubaaee002006-06-26 02:48:02 +02003038int main(int argc, char **argv)
3039{
3040 int err, retry;
3041 struct rlimit limit;
Willy Tarreau269ab312012-09-05 08:02:48 +02003042 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003043
Olivier Houchard5fa300d2018-02-03 15:15:21 +01003044 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003045
Willy Tarreauff9c9142019-02-07 10:39:36 +01003046 /* this can only safely be done here, though it's optimized away by
3047 * the compiler.
3048 */
3049 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3050 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3051 "HAProxy was built with value %d, please fix it and rebuild.\n",
3052 LONGBITS, MAX_PROCS);
3053 exit(1);
3054 }
3055
Willy Tarreaubf696402019-03-01 10:09:28 +01003056 /* take a copy of initial limits before we possibly change them */
3057 getrlimit(RLIMIT_NOFILE, &limit);
3058 rlim_fd_cur_at_boot = limit.rlim_cur;
3059 rlim_fd_max_at_boot = limit.rlim_max;
3060
Willy Tarreau5794fb02018-11-25 18:43:29 +01003061 /* process all initcalls in order of potential dependency */
3062 RUN_INITCALLS(STG_PREPARE);
3063 RUN_INITCALLS(STG_LOCK);
3064 RUN_INITCALLS(STG_ALLOC);
3065 RUN_INITCALLS(STG_POOL);
3066 RUN_INITCALLS(STG_REGISTER);
3067 RUN_INITCALLS(STG_INIT);
3068
Emeric Bruncf20bf12010-10-22 16:06:11 +02003069 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003070 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3071 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3072 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003073 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003074
Willy Tarreaue437c442010-03-17 18:02:46 +01003075 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3076 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3077 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003078 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003079 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003080
Willy Tarreaudc23a922011-02-16 11:10:36 +01003081 /* ulimits */
3082 if (!global.rlimit_nofile)
3083 global.rlimit_nofile = global.maxsock;
3084
3085 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003086 limit.rlim_cur = global.rlimit_nofile;
3087 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3088
Willy Tarreaudc23a922011-02-16 11:10:36 +01003089 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003090 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003091 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3092 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3093 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3094 if (!(global.mode & MODE_MWORKER))
3095 exit(1);
3096 }
3097 else {
3098 /* try to set it to the max possible at least */
3099 limit.rlim_cur = limit.rlim_max;
3100 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3101 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003102
William Dauchya5194602020-03-28 19:29:58 +01003103 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003104 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3105 global.rlimit_nofile = limit.rlim_cur;
3106 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003107 }
3108 }
3109
3110 if (global.rlimit_memmax) {
3111 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003112 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003113#ifdef RLIMIT_AS
3114 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003115 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3116 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3117 argv[0], global.rlimit_memmax);
3118 if (!(global.mode & MODE_MWORKER))
3119 exit(1);
3120 }
3121 else
William Dauchya5194602020-03-28 19:29:58 +01003122 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003123 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003124 }
3125#else
3126 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003127 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3128 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3129 argv[0], global.rlimit_memmax);
3130 if (!(global.mode & MODE_MWORKER))
3131 exit(1);
3132 }
3133 else
William Dauchya5194602020-03-28 19:29:58 +01003134 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003135 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003136 }
3137#endif
3138 }
3139
Olivier Houchardf73629d2017-04-05 22:33:04 +02003140 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003141 if (strcmp("/dev/null", old_unixsocket) != 0) {
Willy Tarreau42961742020-08-28 18:42:45 +02003142 if (sock_get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003143 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003144 if (!(global.mode & MODE_MWORKER))
3145 exit(1);
3146 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003147 }
3148 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003149 get_cur_unixsocket();
3150
Willy Tarreaubaaee002006-06-26 02:48:02 +02003151 /* We will loop at most 100 times with 10 ms delay each time.
3152 * That's at most 1 second. We only send a signal to old pids
3153 * if we cannot grab at least one port.
3154 */
3155 retry = MAX_START_RETRIES;
3156 err = ERR_NONE;
3157 while (retry >= 0) {
3158 struct timeval w;
Willy Tarreaue91bff22020-09-02 11:11:43 +02003159 err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003160 /* exit the loop on no error or fatal error */
3161 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003162 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003163 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003164 break;
3165
3166 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3167 * listening sockets. So on those platforms, it would be wiser to
3168 * simply send SIGUSR1, which will not be undoable.
3169 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003170 if (tell_old_pids(SIGTTOU) == 0) {
3171 /* no need to wait if we can't contact old pids */
3172 retry = 0;
3173 continue;
3174 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003175 /* give some time to old processes to stop listening */
3176 w.tv_sec = 0;
3177 w.tv_usec = 10*1000;
3178 select(0, NULL, NULL, NULL, &w);
3179 retry--;
3180 }
3181
Willy Tarreaue91bff22020-09-02 11:11:43 +02003182 /* Note: protocol_bind_all() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003183 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaue91bff22020-09-02 11:11:43 +02003184 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreauf68da462009-06-09 14:36:00 +02003185 if (retry != MAX_START_RETRIES && nb_oldpids) {
3186 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003187 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003188 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003189 exit(1);
3190 }
3191
William Lallemand944e6192018-11-21 15:48:31 +01003192 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003193 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003194 /* Note: we don't have to send anything to the old pids because we
3195 * never stopped them. */
3196 exit(1);
3197 }
3198
Willy Tarreaue91bff22020-09-02 11:11:43 +02003199 /* Ok, all listeners should now be bound, close any leftover sockets
Olivier Houchardf73629d2017-04-05 22:33:04 +02003200 * the previous process gave us, we don't need them anymore
3201 */
3202 while (xfer_sock_list != NULL) {
3203 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3204 close(xfer_sock_list->fd);
3205 free(xfer_sock_list->iface);
3206 free(xfer_sock_list->namespace);
3207 free(xfer_sock_list);
3208 xfer_sock_list = tmpxfer;
3209 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003210
Willy Tarreaubaaee002006-06-26 02:48:02 +02003211 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003212 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3213 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003214
Willy Tarreaubaaee002006-06-26 02:48:02 +02003215 /* MODE_QUIET can inhibit alerts and warnings below this line */
3216
PiBa-NL149a81a2017-12-25 21:03:31 +01003217 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3218 /* either stdin/out/err are already closed or should stay as they are. */
3219 if ((global.mode & MODE_DAEMON)) {
3220 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3221 global.mode &= ~MODE_VERBOSE;
3222 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3223 }
3224 } else {
3225 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3226 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003227 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003228 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003229 }
3230
3231 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003232 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003233 unlink(global.pidfile);
3234 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3235 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003236 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003237 if (nb_oldpids)
3238 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003239 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003240 exit(1);
3241 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003242 }
3243
Willy Tarreaub38651a2007-03-24 17:24:39 +01003244 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003245 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3246 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003247 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003248 exit(1);
3249 }
3250
Jackie Tapia749f74c2020-07-22 18:59:40 -05003251 /* If the user is not root, we'll still let them try the configuration
3252 * but we inform them that unexpected behaviour may occur.
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003253 */
3254 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003255 ha_warning("[%s.main()] Some options which require full privileges"
3256 " might not work well.\n"
3257 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003258
William Lallemand095ba4c2017-06-01 17:38:50 +02003259 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3260
3261 /* chroot if needed */
3262 if (global.chroot != NULL) {
3263 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003264 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003265 if (nb_oldpids)
3266 tell_old_pids(SIGTTIN);
3267 protocol_unbind_all();
3268 exit(1);
3269 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003270 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003271 }
3272
William Lallemand944e6192018-11-21 15:48:31 +01003273 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003274 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003275
William Lallemand27edc4b2019-05-07 17:49:33 +02003276 /* send a SIGTERM to workers who have a too high reloads number */
3277 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3278 mworker_kill_max_reloads(SIGTERM);
3279
William Lallemand8a361b52017-06-20 11:20:33 +02003280 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3281 nb_oldpids = 0;
3282 free(oldpids);
3283 oldpids = NULL;
3284 }
3285
3286
Willy Tarreaubaaee002006-06-26 02:48:02 +02003287 /* Note that any error at this stage will be fatal because we will not
3288 * be able to restart the old pids.
3289 */
3290
William Dauchyf9af9d72019-11-17 15:47:16 +01003291 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3292 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003293
Willy Tarreaubaaee002006-06-26 02:48:02 +02003294 /* check ulimits */
3295 limit.rlim_cur = limit.rlim_max = 0;
3296 getrlimit(RLIMIT_NOFILE, &limit);
3297 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003298 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3299 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3300 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3301 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3302 global.maxsock);
3303 if (!(global.mode & MODE_MWORKER))
3304 exit(1);
3305 }
3306 else
3307 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
William Dauchya5194602020-03-28 19:29:58 +01003308 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003309 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3310 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003311 }
3312
William Lallemand944e6192018-11-21 15:48:31 +01003313 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003314 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003315 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003316 int ret = 0;
3317 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003318 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003319
William Lallemand095ba4c2017-06-01 17:38:50 +02003320 /*
3321 * if daemon + mworker: must fork here to let a master
3322 * process live in background before forking children
3323 */
William Lallemand73b85e72017-06-01 17:38:51 +02003324
3325 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3326 && (global.mode & MODE_MWORKER)
3327 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003328 ret = fork();
3329 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003330 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003331 protocol_unbind_all();
3332 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003333 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003334 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003335 } else /* change the process group ID in the child (master process) */
3336 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003337 }
William Lallemande20b6a62017-06-01 17:38:55 +02003338
William Lallemande20b6a62017-06-01 17:38:55 +02003339
William Lallemanddeed7802017-11-06 11:00:04 +01003340 /* if in master-worker mode, write the PID of the father */
3341 if (global.mode & MODE_MWORKER) {
3342 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003343 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003344 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003345 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003346 }
3347
Willy Tarreaubaaee002006-06-26 02:48:02 +02003348 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003349 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003350 if (global.mode & MODE_MWORKER)
3351 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003352 for (proc = 0; proc < global.nbproc; proc++) {
3353 ret = fork();
3354 if (ret < 0) {
3355 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3356 protocol_unbind_all();
3357 exit(1); /* there has been an error */
3358 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003359 else if (ret == 0) { /* child breaks here */
3360 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003361 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003362 }
William Lallemand944e6192018-11-21 15:48:31 +01003363 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3364 char pidstr[100];
3365 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003366 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003367 }
3368 if (global.mode & MODE_MWORKER) {
3369 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003370
William Lallemand220567e2018-11-21 18:04:53 +01003371 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003372 /* find the right mworker_proc */
3373 list_for_each_entry(child, &proc_list, list) {
3374 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003375 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003376 child->timestamp = now.tv_sec;
3377 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003378 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003379 break;
3380 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003381 }
3382 }
William Lallemandbc193052018-09-11 10:06:26 +02003383
William Lallemand944e6192018-11-21 15:48:31 +01003384 relative_pid++; /* each child will get a different one */
3385 pid_bit <<= 1;
3386 }
3387 } else {
3388 /* wait mode */
3389 global.nbproc = 1;
3390 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003391 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003392
3393#ifdef USE_CPU_AFFINITY
3394 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003395 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003396 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003397#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003398 {
3399 cpuset_t cpuset;
3400 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003401 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003402
3403 CPU_ZERO(&cpuset);
3404 while ((i = ffsl(cpu_map)) > 0) {
3405 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003406 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003407 }
3408 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3409 }
David Carlier5e4c8e22019-09-13 05:12:58 +01003410#elif defined(__linux__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003411 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003412#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003413#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003414 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003415 if (pidfd >= 0) {
3416 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3417 close(pidfd);
3418 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003419
3420 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003421 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003422
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003423 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003424 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003425
3426 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3427 (global.mode & MODE_DAEMON)) {
3428 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003429 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3430 stdio_quiet(-1);
3431
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003432 global.mode &= ~MODE_VERBOSE;
3433 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003434 }
3435
William Lallemandb3f2be32018-09-11 10:06:18 +02003436 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003437 /* should never get there */
3438 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003439 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003440#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003441 ssl_free_dh();
3442#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003443 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003444 }
3445
William Lallemandcb11fd22017-06-01 17:38:52 +02003446 /* child must never use the atexit function */
3447 atexit_flag = 0;
3448
William Lallemandbc193052018-09-11 10:06:26 +02003449 /* close useless master sockets */
3450 if (global.mode & MODE_MWORKER) {
3451 struct mworker_proc *child, *it;
3452 master = 0;
3453
William Lallemand309dc9a2018-10-26 14:47:45 +02003454 mworker_cli_proxy_stop();
3455
William Lallemandbc193052018-09-11 10:06:26 +02003456 /* free proc struct of other processes */
3457 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003458 /* close the FD of the master side for all
3459 * workers, we don't need to close the worker
3460 * side of other workers since it's done with
3461 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003462 if (child->ipc_fd[0] >= 0)
3463 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003464 if (child->relative_pid == relative_pid &&
3465 child->reloads == 0) {
3466 /* keep this struct if this is our pid */
3467 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003468 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003469 }
William Lallemandbc193052018-09-11 10:06:26 +02003470 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003471 mworker_free_child(child);
3472 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003473 }
3474 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003475
William Lallemande1340412017-12-28 16:09:36 +01003476 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3477 devnullfd = open("/dev/null", O_RDWR, 0);
3478 if (devnullfd < 0) {
3479 ha_alert("Cannot open /dev/null\n");
3480 exit(EXIT_FAILURE);
3481 }
3482 }
3483
William Lallemand095ba4c2017-06-01 17:38:50 +02003484 /* Must chroot and setgid/setuid in the children */
3485 /* chroot if needed */
3486 if (global.chroot != NULL) {
3487 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003488 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003489 if (nb_oldpids)
3490 tell_old_pids(SIGTTIN);
3491 protocol_unbind_all();
3492 exit(1);
3493 }
3494 }
3495
3496 free(global.chroot);
3497 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003498 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003499
William Lallemand7f80eb22017-05-26 18:19:55 +02003500 /* pass through every cli socket, and check if it's bound to
3501 * the current process and if it exposes listeners sockets.
3502 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3503 * */
3504
3505 if (global.stats_fe) {
3506 struct bind_conf *bind_conf;
3507
3508 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3509 if (bind_conf->level & ACCESS_FD_LISTENERS) {
Willy Tarreaue26993c2020-09-03 07:18:55 +02003510 if (!bind_conf->settings.bind_proc || bind_conf->settings.bind_proc & (1UL << proc)) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003511 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3512 break;
3513 }
3514 }
3515 }
3516 }
3517
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003518 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003519 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003520 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003521 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003522 if (!(px->bind_proc & (1UL << proc)))
3523 stop_proxy(px);
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003524 }
3525 px = px->next;
3526 }
3527
Emeric Brunc47ba592020-10-07 10:13:10 +02003528 /* we might have to unbind some log forward proxies from some processes */
3529 px = cfg_log_forward;
3530 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003531 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003532 if (!(px->bind_proc & (1UL << proc)))
3533 stop_proxy(px);
Emeric Brunc47ba592020-10-07 10:13:10 +02003534 }
3535 px = px->next;
3536 }
3537
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003538 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003539 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003540 if (!curpeers->peers_fe)
3541 continue;
3542
3543 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3544 continue;
3545
3546 stop_proxy(curpeers->peers_fe);
3547 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003548 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003549 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003550 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003551 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003552 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003553 curpeers->peers_fe = NULL;
3554 }
3555
William Lallemand2e8fad92018-11-13 16:18:23 +01003556 /*
3557 * This is only done in daemon mode because we might want the
3558 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3559 * we should now close the 3 first FDs to ensure that we can
3560 * detach from the TTY. We MUST NOT do it in other cases since
3561 * it would have already be done, and 0-2 would have been
3562 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003563 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003564 if ((global.mode & MODE_DAEMON) &&
3565 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003566 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003567 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003568 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003569 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3570 }
3571 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003572 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3573 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003574 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003575 }
3576
William Dauchye039f262019-11-17 15:47:15 +01003577 /* try our best to re-enable core dumps depending on system capabilities.
3578 * What is addressed here :
3579 * - remove file size limits
3580 * - remove core size limits
3581 * - mark the process dumpable again if it lost it due to user/group
3582 */
3583 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3584 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3585
3586#if defined(RLIMIT_FSIZE)
3587 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3588 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3589 ha_alert("[%s.main()] Failed to set the raise the maximum "
3590 "file size.\n", argv[0]);
3591 if (!(global.mode & MODE_MWORKER))
3592 exit(1);
3593 }
3594 else
3595 ha_warning("[%s.main()] Failed to set the raise the maximum "
William Dauchya5194602020-03-28 19:29:58 +01003596 "file size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003597 }
3598#endif
3599
3600#if defined(RLIMIT_CORE)
3601 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3602 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3603 ha_alert("[%s.main()] Failed to set the raise the core "
3604 "dump size.\n", argv[0]);
3605 if (!(global.mode & MODE_MWORKER))
3606 exit(1);
3607 }
3608 else
3609 ha_warning("[%s.main()] Failed to set the raise the core "
William Dauchya5194602020-03-28 19:29:58 +01003610 "dump size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003611 }
3612#endif
3613
3614#if defined(USE_PRCTL)
3615 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3616 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3617 "no core will be dumped.\n", argv[0]);
3618#endif
3619 }
3620
Christopher Faulete3a5e352017-10-24 13:53:54 +02003621 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003622 /*
3623 * That's it : the central polling loop. Run until we stop.
3624 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003625#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003626 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003627 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003628 int i;
3629
William Lallemand1aab50b2018-06-07 09:46:01 +02003630 /* ensure the signals will be blocked in every thread */
3631 sigfillset(&blocked_sig);
3632 sigdelset(&blocked_sig, SIGPROF);
3633 sigdelset(&blocked_sig, SIGBUS);
3634 sigdelset(&blocked_sig, SIGFPE);
3635 sigdelset(&blocked_sig, SIGILL);
3636 sigdelset(&blocked_sig, SIGSEGV);
3637 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3638
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003639 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003640 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003641 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003642 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003643
Christopher Faulet62519022017-10-16 15:49:32 +02003644#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003645 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003646 if (global.cpu_map.proc_t1[relative_pid-1])
3647 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3648
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003649 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003650 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003651 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003652
Willy Tarreau421f02e2018-01-20 18:19:22 +01003653 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003654 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003655#if defined(__APPLE__)
3656 int j;
3657 unsigned long cpu_map = global.cpu_map.thread[i];
3658
3659 while ((j = ffsl(cpu_map)) > 0) {
3660 thread_affinity_policy_data_t cpu_set = { j - 1 };
3661 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3662 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3663 cpu_map &= ~(1UL << (j - 1));
3664 }
3665#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003666#if defined(__FreeBSD__) || defined(__NetBSD__)
3667 cpuset_t cpuset;
3668#else
3669 cpu_set_t cpuset;
3670#endif
3671 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003672 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003673
3674 CPU_ZERO(&cpuset);
3675
3676 while ((j = ffsl(cpu_map)) > 0) {
3677 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003678 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003679 }
David Carliera92c5ce2019-09-13 05:03:12 +01003680 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003681 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003682#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003683 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003684 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003685#endif /* !USE_CPU_AFFINITY */
3686
William Lallemand1aab50b2018-06-07 09:46:01 +02003687 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003688 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003689
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003690 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003691 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003692
3693 /* Wait the end of other threads */
3694 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003695 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003696
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003697#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3698 show_lock_stats();
3699#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003700 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003701#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003702 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003703 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003704#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003705
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003706 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003707}
3708
Willy Tarreaubaaee002006-06-26 02:48:02 +02003709/*
3710 * Local variables:
3711 * c-indent-level: 8
3712 * c-basic-offset: 8
3713 * End:
3714 */