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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau9233c212021-01-08 21:19:40 +01003 * Copyright 2000-2021 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Ilya Shipitsin46a030c2020-07-05 16:36:08 +050010 * Please refer to RFC7230 - RFC7235 information about HTTP protocol, and
11 * RFC6265 for information about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
42#include <netdb.h>
43#include <fcntl.h>
44#include <errno.h>
45#include <signal.h>
46#include <stdarg.h>
47#include <sys/resource.h>
Tim Duesterhusdfad6a42020-04-18 16:02:47 +020048#include <sys/utsname.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
David Carlier5e4c8e22019-09-13 05:12:58 +010062#ifdef __APPLE__
63#include <mach/mach_types.h>
64#include <mach/thread_act.h>
65#include <mach/thread_policy.h>
66#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010067#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau636848a2019-04-15 19:38:50 +020069#if defined(USE_PRCTL)
70#include <sys/prctl.h>
71#endif
72
Willy Tarreaubaaee002006-06-26 02:48:02 +020073#ifdef DEBUG_FULL
74#include <assert.h>
75#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010076#if defined(USE_SYSTEMD)
77#include <systemd/sd-daemon.h>
78#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020079
Willy Tarreau6c3a6812020-03-06 18:57:15 +010080#include <import/sha1.h>
81
Willy Tarreaub2551052020-06-09 09:07:15 +020082#include <haproxy/acl.h>
83#include <haproxy/activity.h>
84#include <haproxy/api.h>
85#include <haproxy/arg.h>
86#include <haproxy/auth.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020087#include <haproxy/base64.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020088#include <haproxy/capture-t.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020089#include <haproxy/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020090#include <haproxy/chunk.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020091#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020092#include <haproxy/connection.h>
Willy Tarreaueb92deb2020-06-04 10:53:16 +020093#include <haproxy/dns.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020094#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020095#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020096#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +020097#include <haproxy/filters.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020098#include <haproxy/global.h>
Willy Tarreau86416052020-06-04 09:20:54 +020099#include <haproxy/hlua.h>
Willy Tarreauc761f842020-06-04 11:40:28 +0200100#include <haproxy/http_rules.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200101#include <haproxy/list.h>
Willy Tarreau213e9902020-06-04 14:58:24 +0200102#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +0200103#include <haproxy/log.h>
Willy Tarreaub5abe5b2020-06-04 14:07:37 +0200104#include <haproxy/mworker.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +0200105#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +0200106#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +0200107#include <haproxy/openssl-compat.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200108#include <haproxy/pattern.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +0200109#include <haproxy/peers.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200110#include <haproxy/pool.h>
111#include <haproxy/protocol.h>
Willy Tarreaubf3b06b2020-08-26 10:23:40 +0200112#include <haproxy/proto_tcp.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200113#include <haproxy/proxy.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +0200114#include <haproxy/regex.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200115#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +0200116#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +0200117#include <haproxy/session.h>
Willy Tarreau3727a8a2020-06-04 17:37:26 +0200118#include <haproxy/signal.h>
Willy Tarreau063d47d2020-08-28 16:29:53 +0200119#include <haproxy/sock.h>
Willy Tarreau25140cc2020-08-28 15:40:33 +0200120#include <haproxy/sock_inet.h>
Willy Tarreau209108d2020-06-04 20:30:20 +0200121#include <haproxy/ssl_sock.h>
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +0200122#include <haproxy/stats-t.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +0200123#include <haproxy/stream.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +0200124#include <haproxy/task.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +0200125#include <haproxy/thread.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200126#include <haproxy/time.h>
127#include <haproxy/tools.h>
128#include <haproxy/uri_auth-t.h>
Willy Tarreaua1718922020-06-04 16:25:31 +0200129#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200130#include <haproxy/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200131
Willy Tarreaubaaee002006-06-26 02:48:02 +0200132
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100133/* array of init calls for older platforms */
134DECLARE_INIT_STAGES;
135
Willy Tarreau477ecd82010-01-03 21:12:30 +0100136/* list of config files */
137static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200138int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100139int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100140unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100141unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200142
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100143volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100144volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100145
Willy Tarreaubaaee002006-06-26 02:48:02 +0200146/* global options */
147struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100148 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100149 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100150 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200151 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200152 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100153 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100154 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100155 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200156 .unix_bind = {
157 .ux = {
158 .uid = -1,
159 .gid = -1,
160 .mode = 0,
161 }
162 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200163 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100164 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100165 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100166 .maxrewrite = MAXREWRITE,
Willy 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;
Christopher Fauletbbda99b2020-11-06 15:19:19 +0100352 void (*fct)();
Willy Tarreau082b6282019-05-22 14:42:12 +0200353};
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. */
Christopher Fauletbbda99b2020-11-06 15:19:19 +0100524void hap_register_per_thread_free(void (*fct)())
Willy Tarreau082b6282019-05-22 14:42:12 +0200525{
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
Tim Duesterhusc21f2272020-11-21 18:07:59 +0100589#ifdef BUILD_DEBUG
590 "\n DEBUG = " BUILD_DEBUG
591#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100592#ifdef BUILD_FEATURES
593 "\n\nFeature list : " BUILD_FEATURES
594#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200595 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100596 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200597 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100598 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200599
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100600 list_for_each_entry(item, &build_opts_list, list) {
601 puts(item->str);
602 }
603
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100604 putchar('\n');
605
Willy Tarreaube5b6852009-10-03 18:57:08 +0200606 list_pollers(stdout);
607 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200608 list_mux_proto(stdout);
609 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100610 list_services(stdout);
611 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100612 list_filters(stdout);
613 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100614}
615
Willy Tarreaubaaee002006-06-26 02:48:02 +0200616/*
617 * This function prints the command line usage and exits
618 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100619static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200620{
621 display_version();
622 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200623 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200624 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200625 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100626 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200627 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200628 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200629 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200630 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200631 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100632#if defined(USE_SYSTEMD)
633 " -Ws master-worker mode with systemd notify support.\n"
634#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200635 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200636 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100637 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200638 " -m limits the usable amount of memory (in MB)\n"
639 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200640 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200641 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200642#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200643 " -de disables epoll() usage even when available\n"
644#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200645#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200646 " -dk disables kqueue() usage even when available\n"
647#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200648#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000649 " -dv disables event ports usage even when available\n"
650#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200651#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200652 " -dp disables poll() usage even when available\n"
653#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200654#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100655 " -dS disables splice usage (broken on old kernels)\n"
656#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200657#if defined(USE_GETADDRINFO)
658 " -dG disables getaddrinfo() usage\n"
659#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000660#if defined(SO_REUSEPORT)
661 " -dR disables SO_REUSEPORT usage\n"
662#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100663 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100664 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200665 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200666 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200667 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200668 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200669 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100670 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200671 exit(1);
672}
673
674
675
676/*********************************************************************/
677/* more specific functions ***************************************/
678/*********************************************************************/
679
William Lallemand73b85e72017-06-01 17:38:51 +0200680/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
681 * pids the signal was correctly delivered to.
682 */
William Lallemande25473c2019-04-01 11:29:56 +0200683int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200684{
685 int p;
686 int ret = 0;
687 for (p = 0; p < nb_oldpids; p++)
688 if (kill(oldpids[p], sig) == 0)
689 ret++;
690 return ret;
691}
692
William Lallemand75ea0a02017-11-15 19:02:58 +0100693/*
William Lallemand73b85e72017-06-01 17:38:51 +0200694 * remove a pid forom the olpid array and decrease nb_oldpids
695 * return 1 pid was found otherwise return 0
696 */
697
698int delete_oldpid(int pid)
699{
700 int i;
701
702 for (i = 0; i < nb_oldpids; i++) {
703 if (oldpids[i] == pid) {
704 oldpids[i] = oldpids[nb_oldpids - 1];
705 oldpids[nb_oldpids - 1] = 0;
706 nb_oldpids--;
707 return 1;
708 }
709 }
710 return 0;
711}
712
William Lallemand85b0bd92017-06-01 17:38:53 +0200713
714static void get_cur_unixsocket()
715{
716 /* if -x was used, try to update the stat socket if not available anymore */
717 if (global.stats_fe) {
718 struct bind_conf *bind_conf;
719
720 /* pass through all stats socket */
721 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
722 struct listener *l;
723
724 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
725
Willy Tarreau37159062020-08-27 07:48:42 +0200726 if (l->rx.addr.ss_family == AF_UNIX &&
William Lallemand85b0bd92017-06-01 17:38:53 +0200727 (bind_conf->level & ACCESS_FD_LISTENERS)) {
728 const struct sockaddr_un *un;
729
Willy Tarreau37159062020-08-27 07:48:42 +0200730 un = (struct sockaddr_un *)&l->rx.addr;
William Lallemand85b0bd92017-06-01 17:38:53 +0200731 /* priority to old_unixsocket */
732 if (!cur_unixsocket) {
733 cur_unixsocket = strdup(un->sun_path);
734 } else {
735 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
736 free(cur_unixsocket);
737 cur_unixsocket = strdup(old_unixsocket);
738 return;
739 }
740 }
741 }
742 }
743 }
744 }
745 if (!cur_unixsocket && old_unixsocket)
746 cur_unixsocket = strdup(old_unixsocket);
747}
748
William Lallemand73b85e72017-06-01 17:38:51 +0200749/*
750 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800751 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200752 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100753void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200754{
William Lallemand00417412020-06-05 14:08:41 +0200755 char **next_argv = NULL;
756 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200757 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200758 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200759 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100760 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100761 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200762
763 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100764#if defined(USE_SYSTEMD)
765 if (global.tune.options & GTUNE_USE_SYSTEMD)
766 sd_notify(0, "RELOADING=1");
767#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200768 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
769
William Lallemandbc193052018-09-11 10:06:26 +0200770 mworker_proc_list_to_env(); /* put the children description in the env */
771
William Lallemand7c756a82018-11-26 11:53:40 +0100772 /* during the reload we must ensure that every FDs that can't be
773 * reuse (ie those that are not referenced in the proc_list)
774 * are closed or they will leak. */
775
776 /* close the listeners FD */
777 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200778
779 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
780 /* close the poller FD and the thread waker pipe FD */
781 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
782 ptdf->fct();
783 if (fdtab)
784 deinit_pollers();
785 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200786#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200787 /* close random device FDs */
788 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100789#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100790
Willy Tarreau8dca1952019-03-01 10:21:55 +0100791 /* restore the initial FD limits */
792 limit.rlim_cur = rlim_fd_cur_at_boot;
793 limit.rlim_max = rlim_fd_max_at_boot;
794 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
795 getrlimit(RLIMIT_NOFILE, &limit);
796 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
797 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
798 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
799 }
800
William Lallemand73b85e72017-06-01 17:38:51 +0200801 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200802 while (old_argv[old_argc])
803 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200804
William Lallemand85b0bd92017-06-01 17:38:53 +0200805 /* 1 for haproxy -sf, 2 for -x /socket */
Tim Duesterhuse52b6e52020-09-12 20:26:43 +0200806 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1,
807 sizeof(*next_argv));
William Lallemand73b85e72017-06-01 17:38:51 +0200808 if (next_argv == NULL)
809 goto alloc_error;
810
William Lallemand00417412020-06-05 14:08:41 +0200811 /* copy the program name */
812 next_argv[next_argc++] = old_argv[0];
813
814 /* insert the new options just after argv[0] in case we have a -- */
815
William Lallemand73b85e72017-06-01 17:38:51 +0200816 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200817 if (mworker_child_nb() > 0) {
818 struct mworker_proc *child;
819
William Lallemand73b85e72017-06-01 17:38:51 +0200820 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200821
822 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100823 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200824 continue;
William Lallemand00417412020-06-05 14:08:41 +0200825 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200826 goto alloc_error;
827 msg = NULL;
828 }
829 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200830 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200831 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200832 next_argv[next_argc++] = "-x";
833 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200834 }
835
William Lallemand00417412020-06-05 14:08:41 +0200836 /* copy the previous options */
837 for (i = 1; i < old_argc; i++)
838 next_argv[next_argc++] = old_argv[i];
839
Christopher Faulet767a84b2017-11-24 16:50:31 +0100840 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200841 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100842 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200843
Christopher Faulet767a84b2017-11-24 16:50:31 +0100844 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand9fc6c972020-06-08 10:01:13 +0200845 free(next_argv);
846 next_argv = NULL;
William Lallemand722d4ca2017-11-15 19:02:55 +0100847 return;
848
William Lallemand73b85e72017-06-01 17:38:51 +0200849alloc_error:
William Lallemand00417412020-06-05 14:08:41 +0200850 free(next_argv);
851 next_argv = NULL;
Joseph Herlant07a08342018-11-15 10:43:05 -0800852 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200853 return;
854}
855
William Lallemandb3f2be32018-09-11 10:06:18 +0200856static void mworker_loop()
857{
858
859#if defined(USE_SYSTEMD)
860 if (global.tune.options & GTUNE_USE_SYSTEMD)
861 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
862#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200863 /* Busy polling makes no sense in the master :-) */
864 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200865
William Lallemandbc193052018-09-11 10:06:26 +0200866 master = 1;
867
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100868 signal_unregister(SIGTTIN);
869 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100870 signal_unregister(SIGUSR1);
871 signal_unregister(SIGHUP);
872 signal_unregister(SIGQUIT);
873
William Lallemandb3f2be32018-09-11 10:06:18 +0200874 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
875 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100876 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
877 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200878 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
879 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
880 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
881 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
882
883 mworker_unblock_signals();
884 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100885 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200886
William Lallemandbc193052018-09-11 10:06:26 +0200887 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
888 some SIGCHLD were lost */
889
William Lallemandb3f2be32018-09-11 10:06:18 +0200890 global.nbthread = 1;
891 relative_pid = 1;
892 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100893 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200894
William Lallemand2672eb92018-12-14 15:52:39 +0100895#ifdef USE_THREAD
896 tid_bit = 1;
897 all_threads_mask = 1;
898#endif
899
William Lallemandb3f2be32018-09-11 10:06:18 +0200900 jobs++; /* this is the "master" job, we want to take care of the
901 signals even if there is no listener so the poll loop don't
902 leave */
903
904 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200905 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200906}
William Lallemandcb11fd22017-06-01 17:38:52 +0200907
908/*
909 * Reexec the process in failure mode, instead of exiting
910 */
911void reexec_on_failure()
912{
913 if (!atexit_flag)
914 return;
915
916 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
917
Christopher Faulet767a84b2017-11-24 16:50:31 +0100918 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200919 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200920}
William Lallemand73b85e72017-06-01 17:38:51 +0200921
922
923/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200924 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
925 * a signal zero to all subscribers. This means that it's as easy as
926 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200927 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100928static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200929{
930 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200931 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100932 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200933}
934
935/*
936 * upon SIGTTOU, we pause everything
937 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100938static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200939{
Willy Tarreau775e0012020-09-24 16:36:26 +0200940 if (protocol_pause_all() & ERR_FATAL) {
941 const char *msg = "Some proxies refused to pause, performing soft stop now.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200942 ha_warning("%s", msg);
943 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200944 soft_stop();
945 }
Willy Tarreaubafbe012017-11-24 17:34:44 +0100946 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200947}
948
949/*
950 * upon SIGTTIN, let's have a soft stop.
951 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100952static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200953{
Willy Tarreau775e0012020-09-24 16:36:26 +0200954 if (protocol_resume_all() & ERR_FATAL) {
955 const char *msg = "Some proxies refused to resume, probably due to a conflict on a listening port. You may want to try again after the conflicting application is stopped, otherwise a restart might be needed to resume safe operations.\n";
Willy Tarreau0a002df2020-10-09 19:26:27 +0200956 ha_warning("%s", msg);
957 send_log(NULL, LOG_WARNING, "%s", msg);
Willy Tarreau775e0012020-09-24 16:36:26 +0200958 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200959}
960
961/*
962 * this function dumps every server's state when the process receives SIGHUP.
963 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100964static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200965{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100966 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200967
Christopher Faulet767a84b2017-11-24 16:50:31 +0100968 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200969 while (p) {
970 struct server *s = p->srv;
971
972 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
973 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100974 chunk_printf(&trash,
975 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
976 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200977 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100978 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200979 ha_warning("%s\n", trash.area);
980 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200981 s = s->next;
982 }
983
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200984 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
985 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100986 chunk_printf(&trash,
987 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
988 p->id,
989 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 +0200990 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100991 chunk_printf(&trash,
992 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
993 p->id,
994 (p->srv_bck) ? "is running on backup servers" : "has no server available",
995 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 +0200996 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100997 chunk_printf(&trash,
998 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
999 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
1000 p->id, p->srv_act, p->srv_bck,
1001 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 +02001002 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001003 ha_warning("%s\n", trash.area);
1004 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001005
1006 p = p->next;
1007 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001008}
1009
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001010static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001011{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001012 /* dump memory usage then free everything possible */
1013 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001014 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001015}
1016
William Lallemande1340412017-12-28 16:09:36 +01001017/*
1018 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1019 * If <fd> < 0, it opens /dev/null and use it to dup
1020 *
1021 * In the case of chrooting, you have to open /dev/null before the chroot, and
1022 * pass the <fd> to this function
1023 */
1024static void stdio_quiet(int fd)
1025{
1026 if (fd < 0)
1027 fd = open("/dev/null", O_RDWR, 0);
1028
1029 if (fd > -1) {
1030 fclose(stdin);
1031 fclose(stdout);
1032 fclose(stderr);
1033
1034 dup2(fd, 0);
1035 dup2(fd, 1);
1036 dup2(fd, 2);
1037 if (fd > 2)
1038 close(fd);
1039 return;
1040 }
1041
1042 ha_alert("Cannot open /dev/null\n");
1043 exit(EXIT_FAILURE);
1044}
1045
1046
Joseph Herlant03420902018-11-15 10:41:50 -08001047/* This function checks if cfg_cfgfiles contains directories.
1048 * If it finds one, it adds all the files (and only files) it contains
1049 * in cfg_cfgfiles in place of the directory (and removes the directory).
1050 * It adds the files in lexical order.
1051 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001052 * It doesn't add files with name starting with '.'
1053 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001054static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001055{
1056 struct wordlist *wl, *wlb;
1057 char *err = NULL;
1058
1059 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1060 struct stat file_stat;
1061 struct dirent **dir_entries = NULL;
1062 int dir_entries_nb;
1063 int dir_entries_it;
1064
1065 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001066 ha_alert("Cannot open configuration file/directory %s : %s\n",
1067 wl->s,
1068 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001069 exit(1);
1070 }
1071
1072 if (!S_ISDIR(file_stat.st_mode))
1073 continue;
1074
1075 /* from this point wl->s is a directory */
1076
1077 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1078 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001079 ha_alert("Cannot open configuration directory %s : %s\n",
1080 wl->s,
1081 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001082 exit(1);
1083 }
1084
1085 /* for each element in the directory wl->s */
1086 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1087 struct dirent *dir_entry = dir_entries[dir_entries_it];
1088 char *filename = NULL;
1089 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1090
1091 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001092 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001093 */
1094 if (dir_entry->d_name[0] == '.' ||
1095 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1096 goto next_dir_entry;
1097
1098 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001099 ha_alert("Cannot load configuration files %s : out of memory.\n",
1100 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001101 exit(1);
1102 }
1103
1104 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001105 ha_alert("Cannot open configuration file %s : %s\n",
1106 wl->s,
1107 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001108 exit(1);
1109 }
1110
1111 /* don't add anything else than regular file in cfg_cfgfiles
1112 * this way we avoid loops
1113 */
1114 if (!S_ISREG(file_stat.st_mode))
1115 goto next_dir_entry;
1116
1117 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001118 ha_alert("Cannot load configuration files %s : %s\n",
1119 filename,
1120 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001121 exit(1);
1122 }
1123
1124next_dir_entry:
1125 free(filename);
1126 free(dir_entry);
1127 }
1128
1129 free(dir_entries);
1130
1131 /* remove the current directory (wl) from cfg_cfgfiles */
1132 free(wl->s);
1133 LIST_DEL(&wl->list);
1134 free(wl);
1135 }
1136
1137 free(err);
1138}
1139
Willy Tarreaubaaee002006-06-26 02:48:02 +02001140/*
William Lallemand73b85e72017-06-01 17:38:51 +02001141 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001142 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001143 * Return an allocated copy of argv
1144 */
1145
1146static char **copy_argv(int argc, char **argv)
1147{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001148 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001149
Tim Duesterhuse52b6e52020-09-12 20:26:43 +02001150 newargv = calloc(argc + 2, sizeof(*newargv));
William Lallemand73b85e72017-06-01 17:38:51 +02001151 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001152 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001153 return NULL;
1154 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001155 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001156
William Lallemanddf6c5a82020-06-04 17:40:23 +02001157 /* first copy argv[0] */
1158 *newargv++ = *argv++;
1159 argc--;
1160
1161 while (argc > 0) {
1162 if (**argv != '-') {
1163 /* non options are copied but will fail in the argument parser */
1164 *newargv++ = *argv++;
1165 argc--;
1166
1167 } else {
1168 char *flag;
1169
1170 flag = *argv + 1;
1171
1172 if (flag[0] == '-' && flag[1] == 0) {
1173 /* "--\0" copy every arguments till the end of argv */
1174 *newargv++ = *argv++;
1175 argc--;
1176
1177 while (argc > 0) {
1178 *newargv++ = *argv++;
1179 argc--;
1180 }
1181 } else {
1182 switch (*flag) {
1183 case 's':
1184 /* -sf / -st and their parameters are ignored */
1185 if (flag[1] == 'f' || flag[1] == 't') {
1186 argc--;
1187 argv++;
1188 /* The list can't contain a negative value since the only
1189 way to know the end of this list is by looking for the
1190 next option or the end of the options */
1191 while (argc > 0 && argv[0][0] != '-') {
1192 argc--;
1193 argv++;
1194 }
William Lallemand398da622020-09-02 16:12:23 +02001195 } else {
1196 argc--;
1197 argv++;
1198
William Lallemanddf6c5a82020-06-04 17:40:23 +02001199 }
1200 break;
1201
1202 case 'x':
1203 /* this option and its parameter are ignored */
1204 argc--;
1205 argv++;
1206 if (argc > 0) {
1207 argc--;
1208 argv++;
1209 }
1210 break;
1211
1212 case 'C':
1213 case 'n':
1214 case 'm':
1215 case 'N':
1216 case 'L':
1217 case 'f':
1218 case 'p':
1219 case 'S':
1220 /* these options have only 1 parameter which must be copied and can start with a '-' */
1221 *newargv++ = *argv++;
1222 argc--;
1223 if (argc == 0)
1224 goto error;
1225 *newargv++ = *argv++;
1226 argc--;
1227 break;
1228 default:
1229 /* for other options just copy them without parameters, this is also done
1230 * for options like "--foo", but this will fail in the argument parser.
1231 * */
1232 *newargv++ = *argv++;
1233 argc--;
1234 break;
1235 }
William Lallemand73b85e72017-06-01 17:38:51 +02001236 }
1237 }
William Lallemand73b85e72017-06-01 17:38:51 +02001238 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001239
William Lallemanddf6c5a82020-06-04 17:40:23 +02001240 return retargv;
1241
1242error:
1243 free(retargv);
1244 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001245}
1246
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001247
1248/* Performs basic random seed initialization. The main issue with this is that
1249 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1250 * which means that there will only be 4 billion possible random sequences once
1251 * srandom() is called, regardless of the internal state. Not calling it is
1252 * even worse as we'll always produce the same randoms sequences. What we do
1253 * here is to create an initial sequence from various entropy sources, hash it
1254 * using SHA1 and keep the resulting 160 bits available globally.
1255 *
1256 * We initialize the current process with the first 32 bits before starting the
1257 * polling loop, where all this will be changed to have process specific and
1258 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001259 *
1260 * Before starting threads, it's still possible to call random() as srandom()
1261 * is initialized from this, but after threads and/or processes are started,
1262 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001263 */
1264static void ha_random_boot(char *const *argv)
1265{
1266 unsigned char message[256];
1267 unsigned char *m = message;
1268 struct timeval tv;
1269 blk_SHA_CTX ctx;
1270 unsigned long l;
1271 int fd;
1272 int i;
1273
1274 /* start with current time as pseudo-random seed */
1275 gettimeofday(&tv, NULL);
1276 write_u32(m, tv.tv_sec); m += 4;
1277 write_u32(m, tv.tv_usec); m += 4;
1278
1279 /* PID and PPID add some OS-based randomness */
1280 write_u16(m, getpid()); m += 2;
1281 write_u16(m, getppid()); m += 2;
1282
1283 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1284 fd = open("/dev/urandom", O_RDONLY);
1285 if (fd >= 0) {
1286 i = read(fd, m, 20);
1287 if (i > 0)
1288 m += i;
1289 close(fd);
1290 }
1291
1292 /* take up to 160 bits bytes from openssl (non-blocking) */
1293#ifdef USE_OPENSSL
1294 if (RAND_bytes(m, 20) == 1)
1295 m += 20;
1296#endif
1297
1298 /* take 160 bits from existing random in case it was already initialized */
1299 for (i = 0; i < 5; i++) {
1300 write_u32(m, random());
1301 m += 4;
1302 }
1303
1304 /* stack address (benefit form operating system's ASLR) */
1305 l = (unsigned long)&m;
1306 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1307
1308 /* argv address (benefit form operating system's ASLR) */
1309 l = (unsigned long)&argv;
1310 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1311
1312 /* use tv_usec again after all the operations above */
1313 gettimeofday(&tv, NULL);
1314 write_u32(m, tv.tv_usec); m += 4;
1315
1316 /*
1317 * At this point, ~84-92 bytes have been used
1318 */
1319
1320 /* finish with the hostname */
1321 strncpy((char *)m, hostname, message + sizeof(message) - m);
1322 m += strlen(hostname);
1323
1324 /* total message length */
1325 l = m - message;
1326
1327 memset(&ctx, 0, sizeof(ctx));
1328 blk_SHA1_Init(&ctx);
1329 blk_SHA1_Update(&ctx, message, l);
1330 blk_SHA1_Final(boot_seed, &ctx);
1331
1332 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001333 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001334}
1335
Willy Tarreau5a023f02019-03-01 14:19:31 +01001336/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1337 * setting, and returns it. It may return -1 meaning "unlimited" if some
1338 * unlimited proxies have been found and the global.maxconn value is not yet
1339 * set. It may also return a value greater than maxconn if it's not yet set.
1340 * Note that a value of zero means there is no need for pipes. -1 is never
1341 * returned if global.maxconn is valid.
1342 */
1343static int compute_ideal_maxpipes()
1344{
1345 struct proxy *cur;
1346 int nbfe = 0, nbbe = 0;
1347 int unlimited = 0;
1348 int pipes;
1349 int max;
1350
1351 for (cur = proxies_list; cur; cur = cur->next) {
1352 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1353 if (cur->cap & PR_CAP_FE) {
1354 max = cur->maxconn;
1355 nbfe += max;
1356 if (!max) {
1357 unlimited = 1;
1358 break;
1359 }
1360 }
1361 if (cur->cap & PR_CAP_BE) {
1362 max = cur->fullconn ? cur->fullconn : global.maxconn;
1363 nbbe += max;
1364 if (!max) {
1365 unlimited = 1;
1366 break;
1367 }
1368 }
1369 }
1370 }
1371
1372 pipes = MAX(nbfe, nbbe);
1373 if (global.maxconn) {
1374 if (pipes > global.maxconn || unlimited)
1375 pipes = global.maxconn;
1376 } else if (unlimited) {
1377 pipes = -1;
1378 }
1379
1380 return pipes >= 4 ? pipes / 4 : pipes;
1381}
1382
Willy Tarreauac350932019-03-01 15:43:14 +01001383/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1384 * rlimits and computes an ideal maxconn. It's meant to be called only when
1385 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001386 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1387 * default 100) is returned as it is expected that it will even run on tight
1388 * environments, and will maintain compatibility with previous packages that
1389 * used to rely on this value as the default one. The system will emit a
1390 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001391 */
1392static int compute_ideal_maxconn()
1393{
1394 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1395 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1396 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001397 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001398 int maxconn;
1399
1400 /* we have to take into account these elements :
1401 * - number of engine_fds, which inflates the number of FD needed per
1402 * connection by this number.
1403 * - number of pipes per connection on average : for the unlimited
1404 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1405 * fixed value of 2*pipes.
1406 * - two FDs per connection
1407 */
1408
1409 /* subtract listeners and checks */
1410 remain -= global.maxsock;
1411
Willy Tarreau3f200852019-03-14 19:13:17 +01001412 /* one epoll_fd/kqueue_fd per thread */
1413 remain -= global.nbthread;
1414
1415 /* one wake-up pipe (2 fd) per thread */
1416 remain -= 2 * global.nbthread;
1417
Willy Tarreauac350932019-03-01 15:43:14 +01001418 /* Fixed pipes values : we only subtract them if they're not larger
1419 * than the remaining FDs because pipes are optional.
1420 */
1421 if (pipes >= 0 && pipes * 2 < remain)
1422 remain -= pipes * 2;
1423
1424 if (pipes < 0) {
1425 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1426 * = maxconn * (2 + 0.5 + engine_fds)
1427 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1428 */
1429 maxconn = 2 * remain / (5 + 2 * engine_fds);
1430 } else {
1431 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1432 * = maxconn * (2 + engine_fds)
1433 */
1434 maxconn = remain / (2 + engine_fds);
1435 }
1436
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001437 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001438}
1439
Willy Tarreaua409f302020-03-10 17:08:53 +01001440/* computes the estimated maxsock value for the given maxconn based on the
1441 * possibly set global.maxpipes and existing partial global.maxsock. It may
1442 * temporarily change global.maxconn for the time needed to propagate the
1443 * computations, and will reset it.
1444 */
1445static int compute_ideal_maxsock(int maxconn)
1446{
1447 int maxpipes = global.maxpipes;
1448 int maxsock = global.maxsock;
1449
1450
1451 if (!maxpipes) {
1452 int old_maxconn = global.maxconn;
1453
1454 global.maxconn = maxconn;
1455 maxpipes = compute_ideal_maxpipes();
1456 global.maxconn = old_maxconn;
1457 }
1458
1459 maxsock += maxconn * 2; /* each connection needs two sockets */
1460 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1461 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1462 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1463
1464 /* compute fd used by async engines */
1465 if (global.ssl_used_async_engines) {
1466 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1467
1468 maxsock += maxconn * sides * global.ssl_used_async_engines;
1469 }
1470 return maxsock;
1471}
1472
Willy Tarreau304e17e2020-03-10 17:54:54 +01001473/* Tests if it is possible to set the current process' RLIMIT_NOFILE to
1474 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1475 * value is accepted, non-zero otherwise. This is used to determine if an
1476 * automatic limit may be applied or not. When it is not, the caller knows that
1477 * the highest we can do is the rlim_max at boot. In case of error, we return
1478 * that the setting is possible, so that we defer the error processing to the
1479 * final stage in charge of enforcing this.
1480 */
1481static int check_if_maxsock_permitted(int maxsock)
1482{
1483 struct rlimit orig_limit, test_limit;
1484 int ret;
1485
1486 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1487 return 1;
1488
1489 /* don't go further if we can't even set to what we have */
1490 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1491 return 1;
1492
1493 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1494 test_limit.rlim_cur = test_limit.rlim_max;
1495 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1496
1497 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1498 return 1;
1499
1500 return ret == 0;
1501}
1502
1503
William Lallemand73b85e72017-06-01 17:38:51 +02001504/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001505 * This function initializes all the necessary variables. It only returns
1506 * if everything is OK. If something fails, it exits.
1507 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001508static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001509{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001510 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001511 char *tmp;
1512 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001513 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001514 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001515 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001516 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001517 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001518 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001519 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001520 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001521
Christopher Faulete3a5e352017-10-24 13:53:54 +02001522 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001523 old_argv = copy_argv(argc, argv);
1524 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001525 ha_alert("failed to copy argv.\n");
1526 exit(1);
1527 }
William Lallemand73b85e72017-06-01 17:38:51 +02001528
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001529 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001530 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001531 exit(1);
1532 }
David du Colombier7af46052012-05-16 14:16:48 +02001533
Emeric Brun2b920a12010-09-23 18:30:22 +02001534 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1535 * the string in case of truncation, and at least FreeBSD appears not to do
1536 * it.
1537 */
1538 memset(hostname, 0, sizeof(hostname));
1539 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001540
1541 if ((localpeer = strdup(hostname)) == NULL) {
1542 ha_alert("Cannot allocate memory for local peer.\n");
1543 exit(EXIT_FAILURE);
1544 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001545 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001546
William Lallemand24c928c2020-01-14 17:58:18 +01001547 /* we were in mworker mode, we should restart in mworker mode */
1548 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1549 global.mode |= MODE_MWORKER;
1550
Willy Tarreaubaaee002006-06-26 02:48:02 +02001551 /*
1552 * Initialize the previously static variables.
1553 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001554
Willy Tarreau173d9952018-01-26 21:48:23 +01001555 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001556 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001557
Willy Tarreaubaaee002006-06-26 02:48:02 +02001558
1559#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001560 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001561#endif
1562
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001563 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001564 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001565 start_date = now;
1566
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001567 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001568
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001569 if (init_acl() != 0)
1570 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001571
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001572 /* Initialise lua. */
1573 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001574
Christopher Fauletff2613e2016-11-09 11:36:17 +01001575 /* Initialize process vars */
1576 vars_init(&global.vars, SCOPE_PROC);
1577
Willy Tarreau43b78992009-01-25 15:42:27 +01001578 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001579#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001580 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001582#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001583 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001584#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001585#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001586 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001587#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001588#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001589 global.tune.options |= GTUNE_USE_EVPORTS;
1590#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001591#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001592 global.tune.options |= GTUNE_USE_SPLICE;
1593#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001594#if defined(USE_GETADDRINFO)
1595 global.tune.options |= GTUNE_USE_GAI;
1596#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001597#if defined(SO_REUSEPORT)
1598 global.tune.options |= GTUNE_USE_REUSEPORT;
1599#endif
Willy Tarreau76cc6992020-07-01 18:49:24 +02001600#ifdef USE_THREAD
1601 global.tune.options |= GTUNE_IDLE_POOL_SHARED;
1602#endif
William Dauchya5194602020-03-28 19:29:58 +01001603 global.tune.options |= GTUNE_STRICT_LIMITS;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001604
1605 pid = getpid();
1606 progname = *argv;
1607 while ((tmp = strchr(progname, '/')) != NULL)
1608 progname = tmp + 1;
1609
Kevinm48936af2010-12-22 16:08:21 +00001610 /* the process name is used for the logs only */
Eric Salama7cea6062020-10-02 11:58:19 +02001611 chunk_initlen(&global.log_tag, strdup(progname), strlen(progname), strlen(progname));
1612 if (b_orig(&global.log_tag) == NULL) {
1613 chunk_destroy(&global.log_tag);
1614 ha_alert("Cannot allocate memory for log_tag.\n");
1615 exit(EXIT_FAILURE);
1616 }
Kevinm48936af2010-12-22 16:08:21 +00001617
Willy Tarreaubaaee002006-06-26 02:48:02 +02001618 argc--; argv++;
1619 while (argc > 0) {
1620 char *flag;
1621
1622 if (**argv == '-') {
1623 flag = *argv+1;
1624
1625 /* 1 arg */
1626 if (*flag == 'v') {
1627 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001628 if (flag[1] == 'v') /* -vv */
1629 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001630 exit(0);
1631 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001632#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001633 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001634 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001635#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001636#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001637 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001638 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001639#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001640#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001641 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001642 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001643#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001644#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001645 else if (*flag == 'd' && flag[1] == 'v')
1646 global.tune.options &= ~GTUNE_USE_EVPORTS;
1647#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001648#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001649 else if (*flag == 'd' && flag[1] == 'S')
1650 global.tune.options &= ~GTUNE_USE_SPLICE;
1651#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001652#if defined(USE_GETADDRINFO)
1653 else if (*flag == 'd' && flag[1] == 'G')
1654 global.tune.options &= ~GTUNE_USE_GAI;
1655#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001656#if defined(SO_REUSEPORT)
1657 else if (*flag == 'd' && flag[1] == 'R')
1658 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1659#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001660 else if (*flag == 'd' && flag[1] == 'V')
1661 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001662 else if (*flag == 'V')
1663 arg_mode |= MODE_VERBOSE;
1664 else if (*flag == 'd' && flag[1] == 'b')
1665 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001666 else if (*flag == 'd' && flag[1] == 'W')
1667 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001668 else if (*flag == 'd' && flag[1] == 'M')
1669 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001670 else if (*flag == 'd' && flag[1] == 'r')
1671 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001672 else if (*flag == 'd')
1673 arg_mode |= MODE_DEBUG;
1674 else if (*flag == 'c')
1675 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001676 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001677 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001678 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001679 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001680#if defined(USE_SYSTEMD)
1681 global.tune.options |= GTUNE_USE_SYSTEMD;
1682#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001683 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 +01001684 usage(progname);
1685#endif
1686 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001687 else if (*flag == 'W')
1688 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001689 else if (*flag == 'q')
1690 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001691 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001692 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001693 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001694 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001695 }
William Lallemand4fc09692017-06-19 16:37:19 +02001696 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001697 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001698 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001699
Olivier Houchardf73629d2017-04-05 22:33:04 +02001700 argv++;
1701 argc--;
1702 }
William Lallemande7361152018-10-26 14:47:36 +02001703 else if (*flag == 'S') {
1704 struct wordlist *c;
1705
William Lallemanda6b32492020-06-04 23:49:20 +02001706 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001707 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1708 usage(progname);
1709 }
1710 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1711 ha_alert("Cannot allocate memory\n");
1712 exit(EXIT_FAILURE);
1713 }
1714 LIST_ADD(&mworker_cli_conf, &c->list);
1715
1716 argv++;
1717 argc--;
1718 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001719 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1720 /* list of pids to finish ('f') or terminate ('t') */
1721
1722 if (flag[1] == 'f')
1723 oldpids_sig = SIGUSR1; /* finish then exit */
1724 else
1725 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001726 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001727 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001728 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1729 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001730 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001731 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001732 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001733 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001734 errno = 0;
1735 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1736 if (errno) {
1737 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1738 flag,
1739 *argv, strerror(errno));
1740 exit(1);
1741 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001742 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001743 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001744 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1745 flag, endptr);
1746 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001747 }
Chris Lane236062f2018-02-05 23:15:44 +00001748 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001749 if (oldpids[nb_oldpids] <= 0)
1750 usage(progname);
1751 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001752 }
1753 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001754 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1755 /* now that's a cfgfile list */
1756 argv++; argc--;
1757 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001758 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001759 ha_alert("Cannot load configuration file/directory %s : %s\n",
1760 *argv,
1761 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001762 exit(1);
1763 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001764 argv++; argc--;
1765 }
1766 break;
1767 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001768 else { /* >=2 args */
1769 argv++; argc--;
1770 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001771 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001772
1773 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001774 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001775 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001776 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001777 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001778 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001779 free(localpeer);
1780 if ((localpeer = strdup(*argv)) == NULL) {
1781 ha_alert("Cannot allocate memory for local peer.\n");
1782 exit(EXIT_FAILURE);
1783 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001784 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001785 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001786 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001787 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001788 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001789 ha_alert("Cannot load configuration file/directory %s : %s\n",
1790 *argv,
1791 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001792 exit(1);
1793 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001794 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001795 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001796 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001797 }
1798 }
1799 }
1800 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001801 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001802 argv++; argc--;
1803 }
1804
Christopher Faulete3a5e352017-10-24 13:53:54 +02001805 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001806 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001807
William Lallemand944e6192018-11-21 15:48:31 +01001808 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001809 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001810 global.mode |= MODE_MWORKER_WAIT;
1811 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001812 }
1813
1814 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1815 atexit_flag = 1;
1816 atexit(reexec_on_failure);
1817 }
1818
Willy Tarreau576132e2011-09-10 19:26:56 +02001819 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001820 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001821 exit(1);
1822 }
1823
Willy Tarreaubaaee002006-06-26 02:48:02 +02001824 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001825
1826 init_default_instance();
1827
William Lallemand944e6192018-11-21 15:48:31 +01001828 /* in wait mode, we don't try to read the configuration files */
1829 if (!(global.mode & MODE_MWORKER_WAIT)) {
Christopher Faulet33edd512021-01-12 18:57:38 +01001830 char *env_cfgfiles = NULL;
1831 int env_err = 0;
Willy Tarreauc4382422009-12-06 13:10:44 +01001832
William Lallemand944e6192018-11-21 15:48:31 +01001833 /* handle cfgfiles that are actually directories */
1834 cfgfiles_expand_directories();
1835
1836 if (LIST_ISEMPTY(&cfg_cfgfiles))
1837 usage(progname);
1838
1839
1840 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1841 int ret;
1842
Christopher Faulet33edd512021-01-12 18:57:38 +01001843 if (env_err == 0) {
1844 if (!memprintf(&env_cfgfiles, "%s%s%s",
1845 (env_cfgfiles ? env_cfgfiles : ""),
1846 (env_cfgfiles ? ";" : ""), wl->s))
1847 env_err = 1;
1848 }
William Lallemand7b302d82019-05-20 11:15:37 +02001849
William Lallemand944e6192018-11-21 15:48:31 +01001850 ret = readcfgfile(wl->s);
1851 if (ret == -1) {
1852 ha_alert("Could not open configuration file %s : %s\n",
1853 wl->s, strerror(errno));
Christopher Faulet33edd512021-01-12 18:57:38 +01001854 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001855 exit(1);
1856 }
1857 if (ret & (ERR_ABORT|ERR_FATAL))
1858 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1859 err_code |= ret;
Christopher Faulet33edd512021-01-12 18:57:38 +01001860 if (err_code & ERR_ABORT) {
1861 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001862 exit(1);
Christopher Faulet33edd512021-01-12 18:57:38 +01001863 }
Willy Tarreauc4382422009-12-06 13:10:44 +01001864 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001865
William Lallemand944e6192018-11-21 15:48:31 +01001866 /* do not try to resolve arguments nor to spot inconsistencies when
1867 * the configuration contains fatal errors caused by files not found
1868 * or failed memory allocations.
1869 */
1870 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1871 ha_alert("Fatal errors found in configuration.\n");
Christopher Faulet33edd512021-01-12 18:57:38 +01001872 free(env_cfgfiles);
William Lallemand944e6192018-11-21 15:48:31 +01001873 exit(1);
1874 }
Christopher Faulet33edd512021-01-12 18:57:38 +01001875 if (env_err) {
1876 ha_alert("Could not allocate memory for HAPROXY_CFGFILES env variable\n");
1877 exit(1);
1878 }
1879 setenv("HAPROXY_CFGFILES", env_cfgfiles, 1);
1880 free(env_cfgfiles);
William Lallemand7b302d82019-05-20 11:15:37 +02001881
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001882 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001883 if (global.mode & MODE_MWORKER) {
1884 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001885 struct mworker_proc *tmproc;
1886
William Lallemand482f9a92019-04-12 16:15:00 +02001887 setenv("HAPROXY_MWORKER", "1", 1);
1888
William Lallemand16dd1b32018-11-19 18:46:18 +01001889 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1890
William Lallemandf3a86832019-04-01 11:29:58 +02001891 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001892 if (!tmproc) {
1893 ha_alert("Cannot allocate process structures.\n");
1894 exit(EXIT_FAILURE);
1895 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001896 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001897 tmproc->reloads = 0;
1898 tmproc->relative_pid = 0;
1899 tmproc->pid = pid;
1900 tmproc->timestamp = start_date.tv_sec;
1901 tmproc->ipc_fd[0] = -1;
1902 tmproc->ipc_fd[1] = -1;
1903
1904 proc_self = tmproc;
1905
1906 LIST_ADDQ(&proc_list, &tmproc->list);
1907 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001908
1909 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001910
William Lallemandf3a86832019-04-01 11:29:58 +02001911 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001912 if (!tmproc) {
1913 ha_alert("Cannot allocate process structures.\n");
1914 exit(EXIT_FAILURE);
1915 }
1916
William Lallemand8f7069a2019-04-12 16:09:23 +02001917 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001918 tmproc->pid = -1;
1919 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001920 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001921 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001922 tmproc->ipc_fd[0] = -1;
1923 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001924
1925 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1926 exit(EXIT_FAILURE);
1927 }
1928
1929 LIST_ADDQ(&proc_list, &tmproc->list);
1930 }
William Lallemand944e6192018-11-21 15:48:31 +01001931 }
1932 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1933 struct wordlist *it, *c;
1934
William Lallemand1b663612018-10-26 14:47:33 +02001935 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001936
William Lallemande7361152018-10-26 14:47:36 +02001937
William Lallemand550db6d2018-11-06 17:37:12 +01001938 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001939
William Lallemand550db6d2018-11-06 17:37:12 +01001940 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001941 ha_alert("Can't create the master's CLI.\n");
1942 exit(EXIT_FAILURE);
1943 }
William Lallemande7361152018-10-26 14:47:36 +02001944
William Lallemand550db6d2018-11-06 17:37:12 +01001945 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1946
1947 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1948 ha_alert("Can't create the master's CLI.\n");
1949 exit(EXIT_FAILURE);
1950 }
1951 LIST_DEL(&c->list);
1952 free(c->s);
1953 free(c);
1954 }
1955 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001956 }
1957
Willy Tarreauf42d7942020-10-20 11:54:49 +02001958 if (global.nbproc > 1 && !global.nbthread) {
1959 ha_warning("nbproc is deprecated!\n"
1960 " | For suffering many limitations, the 'nbproc' directive is now deprecated\n"
1961 " | and scheduled for removal in 2.5. Just comment it out: haproxy will use\n"
1962 " | threads and will run on all allocated processors. You may also switch to\n"
1963 " | 'nbthread %d' to keep the same number of processors. If you absolutely\n"
1964 " | want to run in multi-process mode, you can silence this warning by adding\n"
1965 " | 'nbthread 1', but then please report your use case to developers.\n",
1966 global.nbproc);
1967 }
1968
Willy Tarreaubb925012009-07-23 13:36:36 +02001969 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001970 for (px = proxies_list; px; px = px->next) {
1971 struct server *srv;
1972 struct post_proxy_check_fct *ppcf;
1973 struct post_server_check_fct *pscf;
1974
Christopher Fauletd5bd8242020-11-02 16:20:13 +01001975 if (px->disabled)
1976 continue;
1977
Christopher Fauletc1692962019-08-12 09:51:07 +02001978 list_for_each_entry(pscf, &post_server_check_list, list) {
1979 for (srv = px->srv; srv; srv = srv->next)
1980 err_code |= pscf->fct(srv);
1981 }
1982 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1983 err_code |= ppcf->fct(px);
1984 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001985 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001986 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001987 exit(1);
1988 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001989
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01001990 err_code |= pattern_finalize_config();
1991 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1992 ha_alert("Failed to finalize pattern config.\n");
1993 exit(1);
1994 }
Willy Tarreau0f936722019-04-11 14:47:08 +02001995
Willy Tarreau70060452015-12-14 12:46:07 +01001996 /* recompute the amount of per-process memory depending on nbproc and
1997 * the shared SSL cache size (allowed to exist in all processes).
1998 */
1999 if (global.rlimit_memmax_all) {
2000#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
2001 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
2002
2003 global.rlimit_memmax =
2004 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
2005 ssl_cache_bytes) / global.nbproc +
2006 ssl_cache_bytes + 1048575LL) / 1048576LL;
2007#else
2008 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
2009#endif
2010 }
2011
Willy Tarreaue5733232019-05-22 19:24:06 +02002012#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002013 err_code |= netns_init();
2014 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002015 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002016 exit(1);
2017 }
2018#endif
2019
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002020 /* Apply server states */
2021 apply_server_state();
2022
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002023 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002024 srv_compute_all_admin_states(px);
2025
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002026 /* Apply servers' configured address */
2027 err_code |= srv_init_addr();
2028 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002029 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002030 exit(1);
2031 }
2032
Willy Tarreau3eb10b82020-04-15 16:42:39 +02002033 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
2034 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
2035 exit(1);
2036 }
2037
Willy Tarreaubaaee002006-06-26 02:48:02 +02002038 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002039 struct peers *pr;
2040 struct proxy *px;
2041
Willy Tarreaubebd2122020-04-15 16:06:11 +02002042 if (warned & WARN_ANY)
2043 qfprintf(stdout, "Warnings were found.\n");
2044
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002045 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002046 if (pr->peers_fe)
2047 break;
2048
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002049 for (px = proxies_list; px; px = px->next)
Willy Tarreauc3914d42020-09-24 08:39:22 +02002050 if (!px->disabled && px->li_all)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002051 break;
2052
2053 if (pr || px) {
2054 /* At least one peer or one listener has been found */
2055 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02002056 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002057 }
2058 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2059 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002060 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002061
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002062 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002063 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002064
Willy Tarreaue6945732016-12-21 19:57:00 +01002065 list_for_each_entry(pcf, &post_check_list, list) {
2066 err_code |= pcf->fct();
2067 if (err_code & (ERR_ABORT|ERR_FATAL))
2068 exit(1);
2069 }
2070
Willy Tarreaubaaee002006-06-26 02:48:02 +02002071 if (cfg_maxconn > 0)
2072 global.maxconn = cfg_maxconn;
2073
Willy Tarreau8d687d82019-03-01 09:39:42 +01002074 if (global.stats_fe)
2075 global.maxsock += global.stats_fe->maxconn;
2076
2077 if (cfg_peers) {
2078 /* peers also need to bypass global maxconn */
2079 struct peers *p = cfg_peers;
2080
2081 for (p = cfg_peers; p; p = p->next)
2082 if (p->peers_fe)
2083 global.maxsock += p->peers_fe->maxconn;
2084 }
2085
Willy Tarreaubaaee002006-06-26 02:48:02 +02002086 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002087 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002088 global.pidfile = strdup(cfg_pidfile);
2089 }
2090
Willy Tarreaud0256482015-01-15 21:45:22 +01002091 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002092 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2093 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2094 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2095 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002096 *
2097 * If memmax is set, then it depends on which values are set. If
2098 * maxsslconn is set, we use memmax to determine how many cleartext
2099 * connections may be added, and set maxconn to the sum of the two.
2100 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2101 * the remaining amount of memory between memmax and the cleartext
2102 * connections. If neither are set, then it is considered that all
2103 * connections are SSL-capable, and maxconn is computed based on this,
2104 * then maxsslconn accordingly. We need to know if SSL is used on the
2105 * frontends, backends, or both, because when it's used on both sides,
2106 * we need twice the value for maxsslconn, but we only count the
2107 * handshake once since it is not performed on the two sides at the
2108 * same time (frontend-side is terminated before backend-side begins).
2109 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002110 * ssl_handshake_cost during its initialization. In any case, if
2111 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2112 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002113 */
Willy Tarreauac350932019-03-01 15:43:14 +01002114 ideal_maxconn = compute_ideal_maxconn();
2115
Willy Tarreaud0256482015-01-15 21:45:22 +01002116 if (!global.rlimit_memmax) {
2117 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002118 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002119 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2120 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2121 }
2122 }
2123#ifdef USE_OPENSSL
2124 else if (!global.maxconn && !global.maxsslconn &&
2125 (global.ssl_used_frontend || global.ssl_used_backend)) {
2126 /* memmax is set, compute everything automatically. Here we want
2127 * to ensure that all SSL connections will be served. We take
2128 * care of the number of sides where SSL is used, and consider
2129 * the worst case : SSL used on both sides and doing a handshake
2130 * simultaneously. Note that we can't have more than maxconn
2131 * handshakes at a time by definition, so for the worst case of
2132 * two SSL conns per connection, we count a single handshake.
2133 */
2134 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2135 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002136 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002137
2138 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2139 mem -= global.maxzlibmem;
2140 mem = mem * MEM_USABLE_RATIO;
2141
Willy Tarreau304e17e2020-03-10 17:54:54 +01002142 /* Principle: we test once to set maxconn according to the free
2143 * memory. If it results in values the system rejects, we try a
2144 * second time by respecting rlim_fd_max. If it fails again, we
2145 * go back to the initial value and will let the final code
2146 * dealing with rlimit report the error. That's up to 3 attempts.
2147 */
2148 do {
2149 global.maxconn = mem /
2150 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2151 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2152 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002153
Willy Tarreau304e17e2020-03-10 17:54:54 +01002154 if (retried == 1)
2155 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2156 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002157#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002158 if (global.maxconn > SYSTEM_MAXCONN)
2159 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002160#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002161 global.maxsslconn = sides * global.maxconn;
2162
2163 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2164 break;
2165 } while (retried++ < 2);
2166
Willy Tarreaud0256482015-01-15 21:45:22 +01002167 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2168 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2169 global.maxconn, global.maxsslconn);
2170 }
2171 else if (!global.maxsslconn &&
2172 (global.ssl_used_frontend || global.ssl_used_backend)) {
2173 /* memmax and maxconn are known, compute maxsslconn automatically.
2174 * maxsslconn being forced, we don't know how many of it will be
2175 * on each side if both sides are being used. The worst case is
2176 * when all connections use only one SSL instance because
2177 * handshakes may be on two sides at the same time.
2178 */
2179 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2180 int64_t mem = global.rlimit_memmax * 1048576ULL;
2181 int64_t sslmem;
2182
2183 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2184 mem -= global.maxzlibmem;
2185 mem = mem * MEM_USABLE_RATIO;
2186
Willy Tarreau87b09662015-04-03 00:22:06 +02002187 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002188 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2189 global.maxsslconn = round_2dig(global.maxsslconn);
2190
2191 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002192 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2193 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2194 "without SSL is %d, but %d was found and SSL is in use.\n",
2195 global.rlimit_memmax,
2196 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2197 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002198 exit(1);
2199 }
2200
2201 if (global.maxsslconn > sides * global.maxconn)
2202 global.maxsslconn = sides * global.maxconn;
2203
2204 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2205 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2206 }
2207#endif
2208 else if (!global.maxconn) {
2209 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2210 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2211 int64_t mem = global.rlimit_memmax * 1048576ULL;
2212 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002213 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002214
2215 if (global.ssl_used_frontend || global.ssl_used_backend)
2216 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2217
2218 mem -= global.maxzlibmem;
2219 mem = mem * MEM_USABLE_RATIO;
2220
2221 clearmem = mem;
2222 if (sides)
2223 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2224
Willy Tarreau304e17e2020-03-10 17:54:54 +01002225 /* Principle: we test once to set maxconn according to the free
2226 * memory. If it results in values the system rejects, we try a
2227 * second time by respecting rlim_fd_max. If it fails again, we
2228 * go back to the initial value and will let the final code
2229 * dealing with rlimit report the error. That's up to 3 attempts.
2230 */
2231 do {
2232 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2233 if (retried == 1)
2234 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2235 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002236#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002237 if (global.maxconn > SYSTEM_MAXCONN)
2238 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002239#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002240
Willy Tarreau304e17e2020-03-10 17:54:54 +01002241 if (clearmem <= 0 || !global.maxconn) {
2242 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2243 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2244 "is %d, but %d was found.\n",
2245 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002246 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002247 global.maxsslconn);
2248 exit(1);
2249 }
2250
2251 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2252 break;
2253 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002254
2255 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2256 if (sides && global.maxsslconn > sides * global.maxconn) {
2257 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2258 "to be limited to %d. Better reduce global.maxsslconn to get more "
2259 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2260 }
2261 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2262 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002263 }
2264
Willy Tarreaua409f302020-03-10 17:08:53 +01002265 global.maxsock = compute_ideal_maxsock(global.maxconn);
2266 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002267 if (!global.maxpipes)
2268 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002269
Olivier Houchard88698d92019-04-16 19:07:22 +02002270 /* update connection pool thresholds */
2271 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2272 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2273
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002274 proxy_adjust_all_maxconn();
2275
Willy Tarreau1db37712007-06-03 17:16:49 +02002276 if (global.tune.maxpollevents <= 0)
2277 global.tune.maxpollevents = MAX_POLL_EVENTS;
2278
Olivier Houchard1599b802018-05-24 18:59:04 +02002279 if (global.tune.runqueue_depth <= 0)
2280 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2281
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002282 if (global.tune.recv_enough == 0)
2283 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2284
Willy Tarreau27a674e2009-08-17 07:23:33 +02002285 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2286 global.tune.maxrewrite = global.tune.bufsize / 2;
2287
Willy Tarreaubaaee002006-06-26 02:48:02 +02002288 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2289 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002290 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002291 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2292 }
2293
William Lallemand095ba4c2017-06-01 17:38:50 +02002294 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002295 /* command line daemon mode inhibits foreground and debug modes mode */
2296 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002297 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002298 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002299
2300 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002301
William Lallemand095ba4c2017-06-01 17:38:50 +02002302 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002303 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002304 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002305 }
2306
William Lallemand095ba4c2017-06-01 17:38:50 +02002307 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002308 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002309 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 +02002310 global.nbproc = 1;
2311 }
2312
2313 if (global.nbproc < 1)
2314 global.nbproc = 1;
2315
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002316 if (global.nbthread < 1)
2317 global.nbthread = 1;
2318
Christopher Faulet3ef26392017-08-29 16:46:57 +02002319 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002320 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002321 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002322 exit(1);
2323 }
2324
Christopher Faulet96d44832017-11-14 22:02:30 +01002325 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002326 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002327 exit(1);
2328 }
2329
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002330 /*
2331 * Note: we could register external pollers here.
2332 * Built-in pollers have been registered before main().
2333 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002334
Willy Tarreau43b78992009-01-25 15:42:27 +01002335 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002336 disable_poller("kqueue");
2337
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002338 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2339 disable_poller("evports");
2340
Willy Tarreau43b78992009-01-25 15:42:27 +01002341 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002342 disable_poller("epoll");
2343
Willy Tarreau43b78992009-01-25 15:42:27 +01002344 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002345 disable_poller("poll");
2346
Willy Tarreau43b78992009-01-25 15:42:27 +01002347 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002348 disable_poller("select");
2349
2350 /* Note: we could disable any poller by name here */
2351
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002352 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002353 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002354 fprintf(stderr, "\n");
2355 list_filters(stderr);
2356 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002357
Willy Tarreau4f60f162007-04-08 16:39:58 +02002358 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002359 ha_alert("No polling mechanism available.\n"
2360 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2361 " is too low on this platform to support maxconn and the number of listeners\n"
2362 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2363 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2364 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2365 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2366 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2367 " check build settings using 'haproxy -vv'.\n\n",
2368 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002369 exit(1);
2370 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002371 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2372 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002373 }
2374
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002375 if (!global.node)
2376 global.node = strdup(hostname);
2377
Willy Tarreau02b092f2020-10-07 18:36:54 +02002378 /* stop disabled proxies */
2379 for (px = proxies_list; px; px = px->next) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02002380 if (px->disabled)
Willy Tarreau02b092f2020-10-07 18:36:54 +02002381 stop_proxy(px);
2382 }
2383
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002384 if (!hlua_post_init())
2385 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002386
Maxime de Roucy0f503922016-05-13 23:52:55 +02002387 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002388}
2389
Simon Horman6fb82592011-07-15 13:14:11 +09002390static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002391{
Simon Hormanac821422011-07-15 13:14:09 +09002392 struct acl_term_suite *suite, *suiteb;
2393 struct acl_term *term, *termb;
2394
Simon Horman6fb82592011-07-15 13:14:11 +09002395 if (!cond)
2396 return;
2397
2398 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2399 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2400 LIST_DEL(&term->list);
2401 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002402 }
Simon Horman6fb82592011-07-15 13:14:11 +09002403 LIST_DEL(&suite->list);
2404 free(suite);
2405 }
2406
2407 free(cond);
2408}
2409
Christopher Fauletcb550132019-12-17 11:25:46 +01002410static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002411{
Christopher Fauletcb550132019-12-17 11:25:46 +01002412 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002413
Christopher Fauletcb550132019-12-17 11:25:46 +01002414 list_for_each_entry_safe(rule, ruleb, rules, list) {
2415 LIST_DEL(&rule->list);
2416 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002417 if (rule->release_ptr)
2418 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002419 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002420 }
2421}
2422
Simon Horman6fb82592011-07-15 13:14:11 +09002423static void deinit_stick_rules(struct list *rules)
2424{
2425 struct sticking_rule *rule, *ruleb;
2426
2427 list_for_each_entry_safe(rule, ruleb, rules, list) {
2428 LIST_DEL(&rule->list);
2429 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002430 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002431 free(rule);
2432 }
2433}
2434
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002435void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002436{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002437 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002438 struct cap_hdr *h,*h_next;
2439 struct server *s,*s_next;
2440 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002441 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002442 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002443 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002444 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002445 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002446 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002447 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002448 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002449 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002450 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002451 struct build_opts_str *bol, *bolb;
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002452 struct post_deinit_fct *pdf, *pdfb;
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002453 struct proxy_deinit_fct *pxdf, *pxdfb;
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002454 struct server_deinit_fct *srvdf, *srvdfb;
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002455 struct per_thread_init_fct *tif, *tifb;
2456 struct per_thread_deinit_fct *tdf, *tdfb;
2457 struct per_thread_alloc_fct *taf, *tafb;
2458 struct per_thread_free_fct *tff, *tffb;
Tim Duesterhus34bef072020-07-04 11:49:50 +02002459 struct post_server_check_fct *pscf, *pscfb;
Tim Duesterhusfc854942020-09-10 19:46:42 +02002460 struct post_check_fct *pcf, *pcfb;
Tim Duesterhus53508d62020-09-10 19:46:40 +02002461 struct post_proxy_check_fct *ppcf, *ppcfb;
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002462 int cur_fd;
2463
2464 /* At this point the listeners state is weird:
2465 * - most listeners are still bound and referenced in their protocol
2466 * - some might be zombies that are not in their proto anymore, but
2467 * still appear in their proxy's listeners with a valid FD.
2468 * - some might be stopped and still appear in their proxy as FD #-1
2469 * - among all of them, some might be inherited hence shared and we're
2470 * not allowed to pause them or whatever, we must just close them.
2471 * - finally some are not listeners (pipes, logs, stdout, etc) and
2472 * must be left intact.
2473 *
2474 * The safe way to proceed is to unbind (and close) whatever is not yet
2475 * unbound so that no more receiver/listener remains alive. Then close
2476 * remaining listener FDs, which correspond to zombie listeners (those
2477 * belonging to disabled proxies that were in another process).
2478 * objt_listener() would be cleaner here but not converted yet.
2479 */
2480 protocol_unbind_all();
2481
2482 for (cur_fd = 0; cur_fd < global.maxsock; cur_fd++) {
Willy Tarreau1a3770c2020-10-14 12:13:51 +02002483 if (!fdtab || !fdtab[cur_fd].owner)
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002484 continue;
2485
Willy Tarreaua74cb382020-10-15 21:29:49 +02002486 if (fdtab[cur_fd].iocb == &sock_accept_iocb) {
Willy Tarreauae7bc4a2020-09-23 16:46:22 +02002487 struct listener *l = fdtab[cur_fd].owner;
2488
2489 BUG_ON(l->state != LI_INIT);
2490 unbind_listener(l);
2491 }
2492 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002493
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002494 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002495 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002496 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002497 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002498 free(p->cookie_name);
2499 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002500 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002501 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002502 free(p->capture_name);
2503 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002504 free(p->rdp_cookie_name);
William Lallemandefc5a9d2020-08-07 14:48:37 +02002505 free(p->invalid_rep);
2506 free(p->invalid_req);
Willy Tarreau62a61232013-04-12 18:13:46 +02002507 if (p->conf.logformat_string != default_http_log_format &&
2508 p->conf.logformat_string != default_tcp_log_format &&
2509 p->conf.logformat_string != clf_http_log_format)
2510 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002511
Willy Tarreau62a61232013-04-12 18:13:46 +02002512 free(p->conf.lfs_file);
2513 free(p->conf.uniqueid_format_string);
Tim Duesterhus18c63592020-07-04 11:49:42 +02002514 istfree(&p->header_unique_id);
Willy Tarreau62a61232013-04-12 18:13:46 +02002515 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002516 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2517 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002518
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002519 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2520 free(p->conf.logformat_sd_string);
2521 free(p->conf.lfsd_file);
2522
Willy Tarreaub80c2302007-11-30 20:51:32 +01002523 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2524 LIST_DEL(&cond->list);
2525 prune_acl_cond(cond);
2526 free(cond);
2527 }
2528
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002529 EXTRA_COUNTERS_FREE(p->extra_counters_fe);
2530 EXTRA_COUNTERS_FREE(p->extra_counters_be);
2531
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002532 /* build a list of unique uri_auths */
2533 if (!ua)
2534 ua = p->uri_auth;
2535 else {
2536 /* check if p->uri_auth is unique */
2537 for (uap = ua; uap; uap=uap->next)
2538 if (uap == p->uri_auth)
2539 break;
2540
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002541 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002542 /* add it, if it is */
2543 p->uri_auth->next = ua;
2544 ua = p->uri_auth;
2545 }
2546 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002547
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002548 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2549 LIST_DEL(&acl->list);
2550 prune_acl(acl);
2551 free(acl);
2552 }
2553
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002554 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2555 LIST_DEL(&srule->list);
2556 prune_acl_cond(srule->cond);
Tim Duesterhus826cf072020-07-04 11:49:44 +02002557 list_for_each_entry_safe(lf, lfb, &srule->expr, list) {
2558 LIST_DEL(&lf->list);
2559 release_sample_expr(lf->expr);
2560 free(lf->arg);
2561 free(lf);
2562 }
Tim Duesterhus6fb74a12020-07-04 11:49:43 +02002563 free(srule->file);
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002564 free(srule->cond);
2565 free(srule);
2566 }
2567
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002568 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2569 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002570 if (rule->cond) {
2571 prune_acl_cond(rule->cond);
2572 free(rule->cond);
2573 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002574 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002575 free(rule);
2576 }
2577
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002578 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2579 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002580 if (rdr->cond) {
2581 prune_acl_cond(rdr->cond);
2582 free(rdr->cond);
2583 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002584 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002585 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2586 LIST_DEL(&lf->list);
2587 free(lf);
2588 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002589 free(rdr);
2590 }
2591
William Lallemand0f99e342011-10-12 17:50:54 +02002592 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2593 LIST_DEL(&log->list);
2594 free(log);
2595 }
2596
William Lallemand723b73a2012-02-08 16:37:49 +01002597 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2598 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002599 release_sample_expr(lf->expr);
2600 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002601 free(lf);
2602 }
2603
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002604 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2605 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002606 release_sample_expr(lf->expr);
2607 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002608 free(lf);
2609 }
2610
Tim Duesterhus79765782020-07-04 11:49:40 +02002611 list_for_each_entry_safe(lf, lfb, &p->format_unique_id, list) {
2612 LIST_DEL(&lf->list);
2613 release_sample_expr(lf->expr);
2614 free(lf->arg);
2615 free(lf);
2616 }
2617
Christopher Fauletcb550132019-12-17 11:25:46 +01002618 deinit_act_rules(&p->tcp_req.inspect_rules);
2619 deinit_act_rules(&p->tcp_rep.inspect_rules);
2620 deinit_act_rules(&p->tcp_req.l4_rules);
2621 deinit_act_rules(&p->tcp_req.l5_rules);
2622 deinit_act_rules(&p->http_req_rules);
2623 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002624 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002625
Simon Horman6fb82592011-07-15 13:14:11 +09002626 deinit_stick_rules(&p->storersp_rules);
2627 deinit_stick_rules(&p->sticking_rules);
2628
Willy Tarreaubaaee002006-06-26 02:48:02 +02002629 h = p->req_cap;
2630 while (h) {
2631 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002632 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002633 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002634 free(h);
2635 h = h_next;
2636 }/* end while(h) */
2637
2638 h = p->rsp_cap;
2639 while (h) {
2640 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002641 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002642 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002643 free(h);
2644 h = h_next;
2645 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002646
Willy Tarreaubaaee002006-06-26 02:48:02 +02002647 s = p->srv;
2648 while (s) {
2649 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002650
Dragan Dosen026ef572019-04-30 00:56:20 +02002651
Willy Tarreauf6562792019-05-07 19:05:35 +02002652 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002653
Willy Tarreaua534fea2008-08-03 12:19:50 +02002654 free(s->id);
2655 free(s->cookie);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002656 free(s->hostname);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002657 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002658 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002659 free(s->idle_conns);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002660 free(s->safe_conns);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002661 free(s->available_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002662 free(s->curr_idle_thr);
Tim Duesterhuscb8f13c2020-07-04 11:49:41 +02002663 free(s->resolvers_id);
Willy Tarreau17d45382016-12-22 21:16:08 +01002664
Christopher Fauletf61f33a2020-03-27 18:55:49 +01002665 if (s->use_ssl == 1 || s->check.use_ssl == 1 || (s->proxy->options & PR_O_TCPCHK_SSL)) {
Willy Tarreau17d45382016-12-22 21:16:08 +01002666 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2667 xprt_get(XPRT_SSL)->destroy_srv(s);
2668 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002669 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002670
2671 list_for_each_entry(srvdf, &server_deinit_list, list)
2672 srvdf->fct(s);
2673
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002674 EXTRA_COUNTERS_FREE(s->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002675 free(s);
2676 s = s_next;
2677 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002678
Willy Tarreau4348fad2012-09-20 16:48:07 +02002679 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Willy Tarreau4348fad2012-09-20 16:48:07 +02002680 LIST_DEL(&l->by_fe);
2681 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002682 free(l->name);
2683 free(l->counters);
Amaury Denoyelleee63d4b2020-10-05 11:49:42 +02002684
2685 EXTRA_COUNTERS_FREE(l->extra_counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002686 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002687 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002688
Willy Tarreau4348fad2012-09-20 16:48:07 +02002689 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002690 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002691 if (bind_conf->xprt->destroy_bind_conf)
2692 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002693 free(bind_conf->file);
2694 free(bind_conf->arg);
2695 LIST_DEL(&bind_conf->by_fe);
2696 free(bind_conf);
2697 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002698
Christopher Fauletd7c91962015-04-30 11:48:27 +02002699 flt_deinit(p);
2700
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002701 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2702 pxdf->fct(p);
2703
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002704 free(p->desc);
2705 free(p->fwdfor_hdr_name);
2706
Olivier Houchard3f795f72019-04-17 22:51:06 +02002707 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002708
Willy Tarreaubafbe012017-11-24 17:34:44 +01002709 pool_destroy(p->req_cap_pool);
2710 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002711 if (p->table)
2712 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002713
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002714 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002715 p = p->next;
Willy Tarreaucd10def2020-10-17 18:48:47 +02002716 HA_RWLOCK_DESTROY(&p0->lbprm.lock);
Willy Tarreauac66d6b2020-10-20 17:24:27 +02002717 HA_RWLOCK_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002718 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002719 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002720
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002721 while (ua) {
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002722 struct stat_scope *scope, *scopep;
2723
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002724 uap = ua;
2725 ua = ua->next;
2726
Willy Tarreaua534fea2008-08-03 12:19:50 +02002727 free(uap->uri_prefix);
2728 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002729 free(uap->node);
2730 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002731
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002732 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002733 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002734
Tim Duesterhus00f00cf2020-09-10 19:46:38 +02002735 scope = uap->scope;
2736 while (scope) {
2737 scopep = scope;
2738 scope = scope->next;
2739
2740 free(scopep->px_id);
2741 free(scopep);
2742 }
2743
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002744 free(uap);
2745 }
2746
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002747 userlist_free(userlist);
2748
David Carlier834cb2e2015-09-25 12:02:25 +01002749 cfg_unregister_sections();
2750
Christopher Faulet0132d062017-07-26 15:33:35 +02002751 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002752
Willy Tarreau05554e62016-12-21 20:46:26 +01002753 list_for_each_entry(pdf, &post_deinit_list, list)
2754 pdf->fct();
2755
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002756 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002757 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002758 free(global.chroot); global.chroot = NULL;
2759 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002760 free(global.node); global.node = NULL;
2761 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002762 free(oldpids); oldpids = NULL;
Tim Duesterhus9e0c2f32020-09-10 19:46:39 +02002763 free(old_argv); old_argv = NULL;
Dragan Dosen4f014152020-06-18 16:56:47 +02002764 free(localpeer); localpeer = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002765 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002766 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002767
William Lallemand0f99e342011-10-12 17:50:54 +02002768 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2769 LIST_DEL(&log->list);
2770 free(log);
2771 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002772 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002773 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002774 LIST_DEL(&wl->list);
2775 free(wl);
2776 }
2777
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002778 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2779 if (bol->must_free)
2780 free((void *)bol->str);
2781 LIST_DEL(&bol->list);
2782 free(bol);
2783 }
2784
Tim Duesterhus17e363f2020-07-04 11:49:47 +02002785 list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
2786 LIST_DEL(&pxdf->list);
2787 free(pxdf);
2788 }
2789
Tim Duesterhusfdf904a2020-07-04 11:49:48 +02002790 list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
2791 LIST_DEL(&pdf->list);
2792 free(pdf);
2793 }
2794
Tim Duesterhus0837eb12020-07-04 11:49:49 +02002795 list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
2796 LIST_DEL(&srvdf->list);
2797 free(srvdf);
2798 }
2799
Tim Duesterhusfc854942020-09-10 19:46:42 +02002800 list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
2801 LIST_DEL(&pcf->list);
2802 free(pcf);
2803 }
2804
Tim Duesterhus34bef072020-07-04 11:49:50 +02002805 list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
2806 LIST_DEL(&pscf->list);
2807 free(pscf);
2808 }
2809
Tim Duesterhus53508d62020-09-10 19:46:40 +02002810 list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
2811 LIST_DEL(&ppcf->list);
2812 free(ppcf);
2813 }
2814
Tim Duesterhusf0c25d22020-09-10 19:46:41 +02002815 list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
2816 LIST_DEL(&tif->list);
2817 free(tif);
2818 }
2819
2820 list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
2821 LIST_DEL(&tdf->list);
2822 free(tdf);
2823 }
2824
2825 list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
2826 LIST_DEL(&taf->list);
2827 free(taf);
2828 }
2829
2830 list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
2831 LIST_DEL(&tff->list);
2832 free(tff);
2833 }
2834
Christopher Fauletff2613e2016-11-09 11:36:17 +01002835 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002836 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002837 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002838} /* end deinit() */
2839
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002840__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002841{
2842 deinit();
2843 exit(status);
2844}
William Lallemand72160322018-11-06 17:37:16 +01002845
Willy Tarreau918ff602011-07-25 16:33:49 +02002846/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002847void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002848{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002849 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002850
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002851 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002852 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002853 wake_expired_tasks();
2854
William Lallemand1aab50b2018-06-07 09:46:01 +02002855 /* check if we caught some signals and process them in the
2856 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002857 if (signal_queue_len && tid == 0) {
2858 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002859 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002860 }
2861
2862 /* Process a few tasks */
2863 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002864
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002865 /* also stop if we failed to cleanly stop all tasks */
2866 if (killed > 1)
2867 break;
2868
Willy Tarreau10146c92015-04-13 20:44:19 +02002869 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002870 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002871 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002872 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002873 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002874 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2875 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002876 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002877 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002878 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002879 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002880 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002881 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002882
Willy Tarreau4f46a352020-03-23 09:27:28 +01002883 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002884 int i;
2885
2886 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002887 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2888 /* notify all threads that stopping was just set */
2889 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002890 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002891 wake_thread(i);
2892 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002893 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002894
2895 /* stop when there's nothing left to do */
2896 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002897 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2898 /* wake all threads waiting on jobs==0 */
2899 for (i = 0; i < global.nbthread; i++)
2900 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2901 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002902 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002903 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002904 }
2905
Willy Tarreauc49ba522019-12-11 08:12:23 +01002906 /* If we have to sleep, measure how long */
2907 next = wake ? TICK_ETERNITY : next_timer_expiry();
2908
Willy Tarreau58b458d2008-06-29 22:40:23 +02002909 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002910 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002911
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002912 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002913 }
2914}
2915
Christopher Faulet1d17c102017-08-29 15:38:48 +02002916static void *run_thread_poll_loop(void *data)
2917{
Willy Tarreau082b6282019-05-22 14:42:12 +02002918 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002919 struct per_thread_init_fct *ptif;
2920 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002921 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002922 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002923 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2924 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002925
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002926 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002927 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002928
Willy Tarreauf6178242019-05-21 19:46:58 +02002929#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002930#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002931 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002932#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002933 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002934#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002935#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002936 /* Now, initialize one thread init at a time. This is better since
2937 * some init code is a bit tricky and may release global resources
2938 * after reallocating them locally. This will also ensure there is
2939 * no race on file descriptors allocation.
2940 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002941#ifdef USE_THREAD
2942 pthread_mutex_lock(&init_mutex);
2943#endif
2944 /* The first thread must set the number of threads left */
2945 if (!init_left)
2946 init_left = global.nbthread;
2947 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002948
Christopher Faulet1d17c102017-08-29 15:38:48 +02002949 tv_update_date(-1,-1);
2950
Willy Tarreau082b6282019-05-22 14:42:12 +02002951 /* per-thread alloc calls performed here are not allowed to snoop on
2952 * other threads, so they are free to initialize at their own rhythm
2953 * as long as they act as if they were alone. None of them may rely
2954 * on resources initialized by the other ones.
2955 */
2956 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2957 if (!ptaf->fct()) {
2958 ha_alert("failed to allocate resources for thread %u.\n", tid);
2959 exit(1);
2960 }
2961 }
2962
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002963 /* per-thread init calls performed here are not allowed to snoop on
2964 * other threads, so they are free to initialize at their own rhythm
2965 * as long as they act as if they were alone.
2966 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002967 list_for_each_entry(ptif, &per_thread_init_list, list) {
2968 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002969 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002970 exit(1);
2971 }
2972 }
2973
Willy Tarreau71092822019-06-10 09:51:04 +02002974 /* enabling protocols will result in fd_insert() calls to be performed,
2975 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002976 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002977 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002978 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002979 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002980
Willy Tarreau34a150c2019-06-11 09:16:41 +02002981#ifdef USE_THREAD
2982 pthread_cond_broadcast(&init_cond);
2983 pthread_mutex_unlock(&init_mutex);
2984
2985 /* now wait for other threads to finish starting */
2986 pthread_mutex_lock(&init_mutex);
2987 while (init_left)
2988 pthread_cond_wait(&init_cond, &init_mutex);
2989 pthread_mutex_unlock(&init_mutex);
2990#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002991
Willy Tarreaua45a8b52019-12-06 16:31:45 +01002992#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
2993 /* Let's refrain from using setuid executables. This way the impact of
2994 * an eventual vulnerability in a library remains limited. It may
2995 * impact external checks but who cares about them anyway ? In the
2996 * worst case it's possible to disable the option. Obviously we do this
2997 * in workers only. We can't hard-fail on this one as it really is
2998 * implementation dependent though we're interested in feedback, hence
2999 * the warning.
3000 */
3001 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
3002 static int warn_fail;
3003 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3004 ha_warning("Failed to disable setuid, please report to developers with detailed "
3005 "information about your operating system. You can silence this warning "
3006 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
3007 }
3008 }
3009#endif
3010
Willy Tarreaud96f1122019-12-03 07:07:36 +01003011#if defined(RLIMIT_NPROC)
3012 /* all threads have started, it's now time to prevent any new thread
3013 * or process from starting. Obviously we do this in workers only. We
3014 * can't hard-fail on this one as it really is implementation dependent
3015 * though we're interested in feedback, hence the warning.
3016 */
3017 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
3018 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
3019 static int warn_fail;
3020
3021 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3022 ha_warning("Failed to disable forks, please report to developers with detailed "
3023 "information about your operating system. You can silence this warning "
3024 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
3025 }
3026 }
3027#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003028 run_poll_loop();
3029
3030 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
3031 ptdf->fct();
3032
Willy Tarreau082b6282019-05-22 14:42:12 +02003033 list_for_each_entry(ptff, &per_thread_free_list, list)
3034 ptff->fct();
3035
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003036#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01003037 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003038 if (tid > 0)
3039 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003040#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003041 return NULL;
3042}
Christopher Faulet1d17c102017-08-29 15:38:48 +02003043
William Dauchyf9af9d72019-11-17 15:47:16 +01003044/* set uid/gid depending on global settings */
3045static void set_identity(const char *program_name)
3046{
3047 if (global.gid) {
3048 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
3049 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3050 " without 'uid'/'user' is generally useless.\n", program_name);
3051
3052 if (setgid(global.gid) == -1) {
3053 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
3054 protocol_unbind_all();
3055 exit(1);
3056 }
3057 }
3058
3059 if (global.uid && setuid(global.uid) == -1) {
3060 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
3061 protocol_unbind_all();
3062 exit(1);
3063 }
3064}
3065
Willy Tarreaubaaee002006-06-26 02:48:02 +02003066int main(int argc, char **argv)
3067{
3068 int err, retry;
3069 struct rlimit limit;
Willy Tarreau269ab312012-09-05 08:02:48 +02003070 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003071
Olivier Houchard5fa300d2018-02-03 15:15:21 +01003072 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003073
Willy Tarreauff9c9142019-02-07 10:39:36 +01003074 /* this can only safely be done here, though it's optimized away by
3075 * the compiler.
3076 */
3077 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3078 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3079 "HAProxy was built with value %d, please fix it and rebuild.\n",
3080 LONGBITS, MAX_PROCS);
3081 exit(1);
3082 }
3083
Willy Tarreaubf696402019-03-01 10:09:28 +01003084 /* take a copy of initial limits before we possibly change them */
3085 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau2bd0f812020-10-13 15:36:08 +02003086
3087 if (limit.rlim_max == RLIM_INFINITY)
3088 limit.rlim_max = limit.rlim_cur;
Willy Tarreaubf696402019-03-01 10:09:28 +01003089 rlim_fd_cur_at_boot = limit.rlim_cur;
3090 rlim_fd_max_at_boot = limit.rlim_max;
3091
Willy Tarreau5794fb02018-11-25 18:43:29 +01003092 /* process all initcalls in order of potential dependency */
3093 RUN_INITCALLS(STG_PREPARE);
3094 RUN_INITCALLS(STG_LOCK);
3095 RUN_INITCALLS(STG_ALLOC);
3096 RUN_INITCALLS(STG_POOL);
3097 RUN_INITCALLS(STG_REGISTER);
3098 RUN_INITCALLS(STG_INIT);
3099
Emeric Bruncf20bf12010-10-22 16:06:11 +02003100 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003101 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3102 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3103 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003104 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003105
Willy Tarreaue437c442010-03-17 18:02:46 +01003106 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3107 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3108 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003109 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003110 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003111
Willy Tarreaudc23a922011-02-16 11:10:36 +01003112 /* ulimits */
3113 if (!global.rlimit_nofile)
3114 global.rlimit_nofile = global.maxsock;
3115
3116 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003117 limit.rlim_cur = global.rlimit_nofile;
3118 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3119
Willy Tarreaudc23a922011-02-16 11:10:36 +01003120 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003121 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003122 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3123 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3124 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003125 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003126 }
3127 else {
3128 /* try to set it to the max possible at least */
3129 limit.rlim_cur = limit.rlim_max;
3130 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3131 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003132
William Dauchya5194602020-03-28 19:29:58 +01003133 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003134 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3135 global.rlimit_nofile = limit.rlim_cur;
3136 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003137 }
3138 }
3139
3140 if (global.rlimit_memmax) {
3141 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003142 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003143#ifdef RLIMIT_AS
3144 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003145 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3146 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3147 argv[0], global.rlimit_memmax);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003148 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003149 }
3150 else
William Dauchya5194602020-03-28 19:29:58 +01003151 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003152 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003153 }
3154#else
3155 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003156 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3157 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3158 argv[0], global.rlimit_memmax);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003159 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003160 }
3161 else
William Dauchya5194602020-03-28 19:29:58 +01003162 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003163 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003164 }
3165#endif
3166 }
3167
Olivier Houchardf73629d2017-04-05 22:33:04 +02003168 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003169 if (strcmp("/dev/null", old_unixsocket) != 0) {
Willy Tarreau42961742020-08-28 18:42:45 +02003170 if (sock_get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003171 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003172 if (!(global.mode & MODE_MWORKER))
3173 exit(1);
3174 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003175 }
3176 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003177 get_cur_unixsocket();
3178
Willy Tarreaubaaee002006-06-26 02:48:02 +02003179 /* We will loop at most 100 times with 10 ms delay each time.
3180 * That's at most 1 second. We only send a signal to old pids
3181 * if we cannot grab at least one port.
3182 */
3183 retry = MAX_START_RETRIES;
3184 err = ERR_NONE;
3185 while (retry >= 0) {
3186 struct timeval w;
Willy Tarreaue91bff22020-09-02 11:11:43 +02003187 err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003188 /* exit the loop on no error or fatal error */
3189 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003190 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003191 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003192 break;
3193
3194 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3195 * listening sockets. So on those platforms, it would be wiser to
3196 * simply send SIGUSR1, which will not be undoable.
3197 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003198 if (tell_old_pids(SIGTTOU) == 0) {
3199 /* no need to wait if we can't contact old pids */
3200 retry = 0;
3201 continue;
3202 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003203 /* give some time to old processes to stop listening */
3204 w.tv_sec = 0;
3205 w.tv_usec = 10*1000;
3206 select(0, NULL, NULL, NULL, &w);
3207 retry--;
3208 }
3209
Willy Tarreaue91bff22020-09-02 11:11:43 +02003210 /* Note: protocol_bind_all() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003211 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreaue91bff22020-09-02 11:11:43 +02003212 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreauf68da462009-06-09 14:36:00 +02003213 if (retry != MAX_START_RETRIES && nb_oldpids) {
3214 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003215 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003216 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003217 exit(1);
3218 }
3219
William Lallemand944e6192018-11-21 15:48:31 +01003220 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003221 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003222 /* Note: we don't have to send anything to the old pids because we
3223 * never stopped them. */
3224 exit(1);
3225 }
3226
Willy Tarreaue91bff22020-09-02 11:11:43 +02003227 /* Ok, all listeners should now be bound, close any leftover sockets
Olivier Houchardf73629d2017-04-05 22:33:04 +02003228 * the previous process gave us, we don't need them anymore
3229 */
3230 while (xfer_sock_list != NULL) {
3231 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3232 close(xfer_sock_list->fd);
3233 free(xfer_sock_list->iface);
3234 free(xfer_sock_list->namespace);
3235 free(xfer_sock_list);
3236 xfer_sock_list = tmpxfer;
3237 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003238
Willy Tarreaubaaee002006-06-26 02:48:02 +02003239 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003240 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3241 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003242
Willy Tarreaubaaee002006-06-26 02:48:02 +02003243 /* MODE_QUIET can inhibit alerts and warnings below this line */
3244
PiBa-NL149a81a2017-12-25 21:03:31 +01003245 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3246 /* either stdin/out/err are already closed or should stay as they are. */
3247 if ((global.mode & MODE_DAEMON)) {
3248 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3249 global.mode &= ~MODE_VERBOSE;
3250 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3251 }
3252 } else {
3253 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3254 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003255 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003256 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003257 }
3258
3259 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003260 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003261 unlink(global.pidfile);
3262 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3263 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003264 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003265 if (nb_oldpids)
3266 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003267 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003268 exit(1);
3269 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003270 }
3271
Willy Tarreaub38651a2007-03-24 17:24:39 +01003272 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003273 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3274 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003275 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003276 exit(1);
3277 }
3278
Jackie Tapia749f74c2020-07-22 18:59:40 -05003279 /* If the user is not root, we'll still let them try the configuration
3280 * but we inform them that unexpected behaviour may occur.
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003281 */
3282 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003283 ha_warning("[%s.main()] Some options which require full privileges"
3284 " might not work well.\n"
3285 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003286
William Lallemand095ba4c2017-06-01 17:38:50 +02003287 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3288
3289 /* chroot if needed */
3290 if (global.chroot != NULL) {
3291 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003292 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003293 if (nb_oldpids)
3294 tell_old_pids(SIGTTIN);
3295 protocol_unbind_all();
3296 exit(1);
3297 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003298 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003299 }
3300
William Lallemand944e6192018-11-21 15:48:31 +01003301 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003302 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003303
William Lallemand27edc4b2019-05-07 17:49:33 +02003304 /* send a SIGTERM to workers who have a too high reloads number */
3305 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3306 mworker_kill_max_reloads(SIGTERM);
3307
William Lallemand8a361b52017-06-20 11:20:33 +02003308 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3309 nb_oldpids = 0;
3310 free(oldpids);
3311 oldpids = NULL;
3312 }
3313
3314
Willy Tarreaubaaee002006-06-26 02:48:02 +02003315 /* Note that any error at this stage will be fatal because we will not
3316 * be able to restart the old pids.
3317 */
3318
William Dauchyf9af9d72019-11-17 15:47:16 +01003319 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3320 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003321
Willy Tarreaubaaee002006-06-26 02:48:02 +02003322 /* check ulimits */
3323 limit.rlim_cur = limit.rlim_max = 0;
3324 getrlimit(RLIMIT_NOFILE, &limit);
3325 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003326 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3327 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3328 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3329 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3330 global.maxsock);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003331 exit(1);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003332 }
3333 else
3334 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
William Dauchya5194602020-03-28 19:29:58 +01003335 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
William Dauchy0fec3ab2019-10-27 20:08:11 +01003336 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3337 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003338 }
3339
William Lallemand944e6192018-11-21 15:48:31 +01003340 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003341 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003342 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003343 int ret = 0;
3344 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003345 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003346
William Lallemand095ba4c2017-06-01 17:38:50 +02003347 /*
3348 * if daemon + mworker: must fork here to let a master
3349 * process live in background before forking children
3350 */
William Lallemand73b85e72017-06-01 17:38:51 +02003351
3352 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3353 && (global.mode & MODE_MWORKER)
3354 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003355 ret = fork();
3356 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003357 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003358 protocol_unbind_all();
3359 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003360 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003361 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003362 } else /* change the process group ID in the child (master process) */
3363 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003364 }
William Lallemande20b6a62017-06-01 17:38:55 +02003365
William Lallemande20b6a62017-06-01 17:38:55 +02003366
William Lallemanddeed7802017-11-06 11:00:04 +01003367 /* if in master-worker mode, write the PID of the father */
3368 if (global.mode & MODE_MWORKER) {
3369 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003370 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003371 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003372 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003373 }
3374
Willy Tarreaubaaee002006-06-26 02:48:02 +02003375 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003376 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003377 if (global.mode & MODE_MWORKER)
3378 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003379 for (proc = 0; proc < global.nbproc; proc++) {
3380 ret = fork();
3381 if (ret < 0) {
3382 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3383 protocol_unbind_all();
3384 exit(1); /* there has been an error */
3385 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003386 else if (ret == 0) { /* child breaks here */
3387 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003388 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003389 }
William Lallemand944e6192018-11-21 15:48:31 +01003390 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3391 char pidstr[100];
3392 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003393 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003394 }
3395 if (global.mode & MODE_MWORKER) {
3396 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003397
William Lallemand220567e2018-11-21 18:04:53 +01003398 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003399 /* find the right mworker_proc */
3400 list_for_each_entry(child, &proc_list, list) {
3401 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003402 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003403 child->timestamp = now.tv_sec;
3404 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003405 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003406 break;
3407 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003408 }
3409 }
William Lallemandbc193052018-09-11 10:06:26 +02003410
William Lallemand944e6192018-11-21 15:48:31 +01003411 relative_pid++; /* each child will get a different one */
3412 pid_bit <<= 1;
3413 }
3414 } else {
3415 /* wait mode */
3416 global.nbproc = 1;
3417 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003418 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003419
3420#ifdef USE_CPU_AFFINITY
3421 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003422 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003423 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003424#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003425 {
3426 cpuset_t cpuset;
3427 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003428 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003429
3430 CPU_ZERO(&cpuset);
3431 while ((i = ffsl(cpu_map)) > 0) {
3432 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003433 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003434 }
3435 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3436 }
David Carlierc5ab3f02020-12-02 21:14:51 +00003437#elif defined(__linux__) || defined(__DragonFly__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003438 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003439#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003440#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003441 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003442 if (pidfd >= 0) {
3443 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3444 close(pidfd);
3445 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003446
3447 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003448 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003449
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003450 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003451 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003452
3453 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3454 (global.mode & MODE_DAEMON)) {
3455 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003456 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3457 stdio_quiet(-1);
3458
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003459 global.mode &= ~MODE_VERBOSE;
3460 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003461 }
3462
William Lallemandb3f2be32018-09-11 10:06:18 +02003463 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003464 /* should never get there */
3465 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003466 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003467#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003468 ssl_free_dh();
3469#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003470 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003471 }
3472
William Lallemandcb11fd22017-06-01 17:38:52 +02003473 /* child must never use the atexit function */
3474 atexit_flag = 0;
3475
William Lallemandbc193052018-09-11 10:06:26 +02003476 /* close useless master sockets */
3477 if (global.mode & MODE_MWORKER) {
3478 struct mworker_proc *child, *it;
3479 master = 0;
3480
William Lallemand309dc9a2018-10-26 14:47:45 +02003481 mworker_cli_proxy_stop();
3482
William Lallemandbc193052018-09-11 10:06:26 +02003483 /* free proc struct of other processes */
3484 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003485 /* close the FD of the master side for all
3486 * workers, we don't need to close the worker
3487 * side of other workers since it's done with
3488 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003489 if (child->ipc_fd[0] >= 0)
3490 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003491 if (child->relative_pid == relative_pid &&
3492 child->reloads == 0) {
3493 /* keep this struct if this is our pid */
3494 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003495 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003496 }
William Lallemandbc193052018-09-11 10:06:26 +02003497 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003498 mworker_free_child(child);
3499 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003500 }
3501 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003502
William Lallemande1340412017-12-28 16:09:36 +01003503 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3504 devnullfd = open("/dev/null", O_RDWR, 0);
3505 if (devnullfd < 0) {
3506 ha_alert("Cannot open /dev/null\n");
3507 exit(EXIT_FAILURE);
3508 }
3509 }
3510
William Lallemand095ba4c2017-06-01 17:38:50 +02003511 /* Must chroot and setgid/setuid in the children */
3512 /* chroot if needed */
3513 if (global.chroot != NULL) {
3514 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003515 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003516 if (nb_oldpids)
3517 tell_old_pids(SIGTTIN);
3518 protocol_unbind_all();
3519 exit(1);
3520 }
3521 }
3522
3523 free(global.chroot);
3524 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003525 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003526
William Lallemand7f80eb22017-05-26 18:19:55 +02003527 /* pass through every cli socket, and check if it's bound to
3528 * the current process and if it exposes listeners sockets.
3529 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3530 * */
3531
3532 if (global.stats_fe) {
3533 struct bind_conf *bind_conf;
3534
3535 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3536 if (bind_conf->level & ACCESS_FD_LISTENERS) {
Willy Tarreaue26993c2020-09-03 07:18:55 +02003537 if (!bind_conf->settings.bind_proc || bind_conf->settings.bind_proc & (1UL << proc)) {
William Lallemand7f80eb22017-05-26 18:19:55 +02003538 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3539 break;
3540 }
3541 }
3542 }
3543 }
3544
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003545 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003546 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003547 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003548 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003549 if (!(px->bind_proc & (1UL << proc)))
3550 stop_proxy(px);
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003551 }
3552 px = px->next;
3553 }
3554
Emeric Brunc47ba592020-10-07 10:13:10 +02003555 /* we might have to unbind some log forward proxies from some processes */
3556 px = cfg_log_forward;
3557 while (px != NULL) {
Willy Tarreauc3914d42020-09-24 08:39:22 +02003558 if (px->bind_proc && !px->disabled) {
Willy Tarreau337c8352020-09-24 10:51:29 +02003559 if (!(px->bind_proc & (1UL << proc)))
3560 stop_proxy(px);
Emeric Brunc47ba592020-10-07 10:13:10 +02003561 }
3562 px = px->next;
3563 }
3564
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003565 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003566 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003567 if (!curpeers->peers_fe)
3568 continue;
3569
3570 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3571 continue;
3572
3573 stop_proxy(curpeers->peers_fe);
3574 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003575 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003576 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003577 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003578 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003579 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003580 curpeers->peers_fe = NULL;
3581 }
3582
William Lallemand2e8fad92018-11-13 16:18:23 +01003583 /*
3584 * This is only done in daemon mode because we might want the
3585 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3586 * we should now close the 3 first FDs to ensure that we can
3587 * detach from the TTY. We MUST NOT do it in other cases since
3588 * it would have already be done, and 0-2 would have been
3589 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003590 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003591 if ((global.mode & MODE_DAEMON) &&
3592 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003593 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003594 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003595 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003596 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3597 }
3598 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003599 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3600 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003601 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003602 }
3603
William Dauchye039f262019-11-17 15:47:15 +01003604 /* try our best to re-enable core dumps depending on system capabilities.
3605 * What is addressed here :
3606 * - remove file size limits
3607 * - remove core size limits
3608 * - mark the process dumpable again if it lost it due to user/group
3609 */
3610 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3611 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3612
3613#if defined(RLIMIT_FSIZE)
3614 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3615 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3616 ha_alert("[%s.main()] Failed to set the raise the maximum "
3617 "file size.\n", argv[0]);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003618 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003619 }
3620 else
3621 ha_warning("[%s.main()] Failed to set the raise the maximum "
William Dauchya5194602020-03-28 19:29:58 +01003622 "file size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003623 }
3624#endif
3625
3626#if defined(RLIMIT_CORE)
3627 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3628 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3629 ha_alert("[%s.main()] Failed to set the raise the core "
3630 "dump size.\n", argv[0]);
Jerome Magnin4b1148f2021-01-12 20:19:38 +01003631 exit(1);
William Dauchye039f262019-11-17 15:47:15 +01003632 }
3633 else
3634 ha_warning("[%s.main()] Failed to set the raise the core "
William Dauchya5194602020-03-28 19:29:58 +01003635 "dump size.\n", argv[0]);
William Dauchye039f262019-11-17 15:47:15 +01003636 }
3637#endif
3638
3639#if defined(USE_PRCTL)
3640 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3641 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3642 "no core will be dumped.\n", argv[0]);
3643#endif
3644 }
3645
Christopher Faulete3a5e352017-10-24 13:53:54 +02003646 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003647 /*
3648 * That's it : the central polling loop. Run until we stop.
3649 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003650#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003651 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003652 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003653 int i;
3654
William Lallemand1aab50b2018-06-07 09:46:01 +02003655 /* ensure the signals will be blocked in every thread */
3656 sigfillset(&blocked_sig);
3657 sigdelset(&blocked_sig, SIGPROF);
3658 sigdelset(&blocked_sig, SIGBUS);
3659 sigdelset(&blocked_sig, SIGFPE);
3660 sigdelset(&blocked_sig, SIGILL);
3661 sigdelset(&blocked_sig, SIGSEGV);
3662 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3663
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003664 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003665 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003666 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003667 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003668
Christopher Faulet62519022017-10-16 15:49:32 +02003669#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003670 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003671 if (global.cpu_map.proc_t1[relative_pid-1])
3672 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3673
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003674 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003675 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003676 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003677
Willy Tarreau421f02e2018-01-20 18:19:22 +01003678 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003679 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003680#if defined(__APPLE__)
3681 int j;
3682 unsigned long cpu_map = global.cpu_map.thread[i];
3683
3684 while ((j = ffsl(cpu_map)) > 0) {
3685 thread_affinity_policy_data_t cpu_set = { j - 1 };
3686 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3687 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3688 cpu_map &= ~(1UL << (j - 1));
3689 }
3690#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003691#if defined(__FreeBSD__) || defined(__NetBSD__)
3692 cpuset_t cpuset;
3693#else
3694 cpu_set_t cpuset;
3695#endif
3696 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003697 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003698
3699 CPU_ZERO(&cpuset);
3700
3701 while ((j = ffsl(cpu_map)) > 0) {
3702 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003703 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003704 }
David Carliera92c5ce2019-09-13 05:03:12 +01003705 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003706 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003707#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003708 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003709 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003710#endif /* !USE_CPU_AFFINITY */
3711
William Lallemand1aab50b2018-06-07 09:46:01 +02003712 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003713 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003714
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003715 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003716 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003717
3718 /* Wait the end of other threads */
3719 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003720 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003721
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003722#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3723 show_lock_stats();
3724#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003725 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003726#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003727 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003728 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003729#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003730
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003731 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003732}
3733
Willy Tarreaubaaee002006-06-26 02:48:02 +02003734/*
3735 * Local variables:
3736 * c-indent-level: 8
3737 * c-basic-offset: 8
3738 * End:
3739 */