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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau71f95fa2020-01-22 10:34:58 +01003 * Copyright 2000-2020 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations 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>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
Tim Duesterhusdfad6a42020-04-18 16:02:47 +020049#include <sys/utsname.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010050#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020051#include <time.h>
52#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010053#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010055#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000056#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020057#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000058#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020059#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000060#endif
David Carlier6d5c8412017-11-29 11:02:32 +000061#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020062#endif
David Carlier5e4c8e22019-09-13 05:12:58 +010063#ifdef __APPLE__
64#include <mach/mach_types.h>
65#include <mach/thread_act.h>
66#include <mach/thread_policy.h>
67#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010068#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020069
Willy Tarreau636848a2019-04-15 19:38:50 +020070#if defined(USE_PRCTL)
71#include <sys/prctl.h>
72#endif
73
Willy Tarreaubaaee002006-06-26 02:48:02 +020074#ifdef DEBUG_FULL
75#include <assert.h>
76#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010077#if defined(USE_SYSTEMD)
78#include <systemd/sd-daemon.h>
79#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020080
Willy Tarreau4c7e4b72020-05-27 12:58:42 +020081#include <haproxy/api.h>
Willy Tarreau6c3a6812020-03-06 18:57:15 +010082#include <import/sha1.h>
83
Willy Tarreau8d366972020-05-27 16:10:29 +020084#include <haproxy/base64.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020085#include <common/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020086#include <haproxy/chunk.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020087#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020088#include <haproxy/errors.h>
Willy Tarreaud0ef4392020-06-02 09:38:52 +020089#include <haproxy/pool.h>
Willy Tarreau853b2972020-05-27 18:01:47 +020090#include <haproxy/list.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +020091#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +020092#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +020093#include <haproxy/openssl-compat.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +020094#include <haproxy/regex.h>
Willy Tarreau48fbcae2020-06-03 18:09:46 +020095#include <haproxy/tools.h>
Willy Tarreau92b4f132020-06-01 11:05:15 +020096#include <haproxy/time.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020097#include <common/uri_auth.h>
Willy Tarreaud6788052020-05-27 15:59:00 +020098#include <haproxy/version.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +020099#include <haproxy/thread.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100
101#include <types/capture.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200102#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200103#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200104#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +0900105#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +0200106#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200107
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200108#include <proto/acl.h>
Willy Tarreaua04ded52020-06-02 10:29:48 +0200109#include <haproxy/activity.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +0200110#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +0200111#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200112#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200113#include <proto/channel.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200114#include <proto/cli.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200115#include <proto/connection.h>
Willy Tarreau0f6ffd62020-06-03 19:33:00 +0200116#include <haproxy/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200117#include <proto/filters.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100118#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +0200119#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200120#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200121#include <proto/log.h>
William Lallemand48dfbbd2019-04-01 11:29:53 +0200122#include <proto/mworker.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100123#include <proto/pattern.h>
Willy Tarreau2dd7c352020-06-03 15:26:55 +0200124#include <haproxy/protocol.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +0200125#include <proto/http_ana.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200126#include <proto/proxy.h>
127#include <proto/queue.h>
128#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200129#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200130#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200131#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200132#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200133#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100134#include <proto/vars.h>
Grant Zhang872f9c22017-01-21 01:10:18 +0000135#include <proto/ssl_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200136
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100137/* array of init calls for older platforms */
138DECLARE_INIT_STAGES;
139
Willy Tarreau477ecd82010-01-03 21:12:30 +0100140/* list of config files */
141static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200142int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100143int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100144unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100145unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200146
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100147volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100148volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100149
Willy Tarreaubaaee002006-06-26 02:48:02 +0200150/* global options */
151struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100152 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100153 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100154 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200155 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200156 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100157 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100158 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100159 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200160 .unix_bind = {
161 .ux = {
162 .uid = -1,
163 .gid = -1,
164 .mode = 0,
165 }
166 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200167 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100168 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100169 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100170 .maxrewrite = MAXREWRITE,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100171 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100172 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200173 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200174 .pool_low_ratio = 20,
175 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200176 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200177#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100178 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200179#endif
William Lallemandf3747832012-11-09 12:33:10 +0100180 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100181#ifdef DEFAULT_IDLE_TIMER
182 .idle_timer = DEFAULT_IDLE_TIMER,
183#else
184 .idle_timer = 1000, /* 1 second */
185#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200186 },
Emeric Brun76d88952012-10-05 15:47:31 +0200187#ifdef USE_OPENSSL
188#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200189 .maxsslconn = DEFAULT_MAXSSLCONN,
190#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200191#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200192 /* others NULL OK */
193};
194
195/*********************************************************************/
196
197int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100198int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200199int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100200int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100201int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100202int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200203
204/* Here we store informations about the pids of the processes we may pause
205 * or kill. We will send them a signal every 10 ms until we can bind to all
206 * our ports. With 200 retries, that's about 2 seconds.
207 */
208#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200209static int *oldpids = NULL;
210static int oldpids_sig; /* use USR1 or TERM */
211
Olivier Houchardf73629d2017-04-05 22:33:04 +0200212/* Path to the unix socket we use to retrieve listener sockets from the old process */
213static const char *old_unixsocket;
214
William Lallemand85b0bd92017-06-01 17:38:53 +0200215static char *cur_unixsocket = NULL;
216
William Lallemandcb11fd22017-06-01 17:38:52 +0200217int atexit_flag = 0;
218
Willy Tarreaubb545b42010-08-25 12:58:59 +0200219int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200220const int zero = 0;
221const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200222const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200223
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100224char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200225char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200226
William Lallemand00417412020-06-05 14:08:41 +0200227static char **old_argv = NULL; /* previous argv but cleaned up */
William Lallemand73b85e72017-06-01 17:38:51 +0200228
William Lallemandbc193052018-09-11 10:06:26 +0200229struct list proc_list = LIST_HEAD_INIT(proc_list);
230
231int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100232unsigned int rlim_fd_cur_at_boot = 0;
233unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200234
Willy Tarreau6c3a6812020-03-06 18:57:15 +0100235/* per-boot randomness */
236unsigned char boot_seed[20]; /* per-boot random seed (160 bits initially) */
237
William Lallemand16dd1b32018-11-19 18:46:18 +0100238struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200239
William Lallemandb3f2be32018-09-11 10:06:18 +0200240static void *run_thread_poll_loop(void *data);
241
Willy Tarreauff055502014-04-28 22:27:06 +0200242/* bitfield of a few warnings to emit just once (WARN_*) */
243unsigned int warned = 0;
244
William Lallemande7361152018-10-26 14:47:36 +0200245/* master CLI configuration (-S flag) */
246struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100247
248/* These are strings to be reported in the output of "haproxy -vv". They may
249 * either be constants (in which case must_free must be zero) or dynamically
250 * allocated strings to pass to free() on exit, and in this case must_free
251 * must be non-zero.
252 */
253struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
254struct build_opts_str {
255 struct list list;
256 const char *str;
257 int must_free;
258};
259
Willy Tarreaue6945732016-12-21 19:57:00 +0100260/* These functions are called just after the point where the program exits
261 * after a config validity check, so they are generally suited for resource
262 * allocation and slow initializations that should be skipped during basic
263 * config checks. The functions must return 0 on success, or a combination
264 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
265 * and immediate exit, so the function must have emitted any useful error.
266 */
267struct list post_check_list = LIST_HEAD_INIT(post_check_list);
268struct post_check_fct {
269 struct list list;
270 int (*fct)();
271};
272
Christopher Fauletc1692962019-08-12 09:51:07 +0200273/* These functions are called for each proxy just after the config validity
274 * check. The functions must return 0 on success, or a combination of ERR_*
275 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
276 * exit, so the function must have emitted any useful error.
277 */
278struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
279struct post_proxy_check_fct {
280 struct list list;
281 int (*fct)(struct proxy *);
282};
283
284/* These functions are called for each server just after the config validity
285 * check. The functions must return 0 on success, or a combination of ERR_*
286 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
287 * exit, so the function must have emitted any useful error.
288 */
289struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
290struct post_server_check_fct {
291 struct list list;
292 int (*fct)(struct server *);
293};
294
Willy Tarreau082b6282019-05-22 14:42:12 +0200295/* These functions are called for each thread just after the thread creation
296 * and before running the init functions. They should be used to do per-thread
297 * (re-)allocations that are needed by subsequent functoins. They must return 0
298 * if an error occurred. */
299struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
300struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100301 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200302 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100303};
304
Christopher Faulet415f6112017-07-25 16:52:58 +0200305/* These functions are called for each thread just after the thread creation
306 * and before running the scheduler. They should be used to do per-thread
307 * initializations. They must return 0 if an error occurred. */
308struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
309struct per_thread_init_fct {
310 struct list list;
311 int (*fct)();
312};
313
Willy Tarreau082b6282019-05-22 14:42:12 +0200314/* These functions are called when freeing the global sections at the end of
315 * deinit, after everything is stopped. They don't return anything. They should
316 * not release shared resources that are possibly used by other deinit
317 * functions, only close/release what is private. Use the per_thread_free_list
318 * to release shared resources.
319 */
320struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
321struct post_deinit_fct {
322 struct list list;
323 void (*fct)();
324};
325
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200326/* These functions are called when freeing a proxy during the deinit, after
327 * everything isg stopped. They don't return anything. They should not release
328 * the proxy itself or any shared resources that are possibly used by other
329 * deinit functions, only close/release what is private.
330 */
331struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
332struct proxy_deinit_fct {
333 struct list list;
334 void (*fct)(struct proxy *);
335};
336
337/* These functions are called when freeing a server during the deinit, after
338 * everything isg stopped. They don't return anything. They should not release
339 * the proxy itself or any shared resources that are possibly used by other
340 * deinit functions, only close/release what is private.
341 */
342struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
343struct server_deinit_fct {
344 struct list list;
345 void (*fct)(struct server *);
346};
347
Willy Tarreau082b6282019-05-22 14:42:12 +0200348/* These functions are called when freeing the global sections at the end of
349 * deinit, after the thread deinit functions, to release unneeded memory
350 * allocations. They don't return anything, and they work in best effort mode
351 * as their sole goal is to make valgrind mostly happy.
352 */
353struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
354struct per_thread_free_fct {
355 struct list list;
356 int (*fct)();
357};
358
Christopher Faulet415f6112017-07-25 16:52:58 +0200359/* These functions are called for each thread just after the scheduler loop and
360 * before exiting the thread. They don't return anything and, as for post-deinit
361 * functions, they work in best effort mode as their sole goal is to make
362 * valgrind mostly happy. */
363struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
364struct per_thread_deinit_fct {
365 struct list list;
366 void (*fct)();
367};
368
Willy Tarreaubaaee002006-06-26 02:48:02 +0200369/*********************************************************************/
370/* general purpose functions ***************************************/
371/*********************************************************************/
372
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100373/* used to register some build option strings at boot. Set must_free to
374 * non-zero if the string must be freed upon exit.
375 */
376void hap_register_build_opts(const char *str, int must_free)
377{
378 struct build_opts_str *b;
379
380 b = calloc(1, sizeof(*b));
381 if (!b) {
382 fprintf(stderr, "out of memory\n");
383 exit(1);
384 }
385 b->str = str;
386 b->must_free = must_free;
387 LIST_ADDQ(&build_opts_list, &b->list);
388}
389
Willy Tarreaue6945732016-12-21 19:57:00 +0100390/* used to register some initialization functions to call after the checks. */
391void hap_register_post_check(int (*fct)())
392{
393 struct post_check_fct *b;
394
395 b = calloc(1, sizeof(*b));
396 if (!b) {
397 fprintf(stderr, "out of memory\n");
398 exit(1);
399 }
400 b->fct = fct;
401 LIST_ADDQ(&post_check_list, &b->list);
402}
403
Christopher Fauletc1692962019-08-12 09:51:07 +0200404/* used to register some initialization functions to call for each proxy after
405 * the checks.
406 */
407void hap_register_post_proxy_check(int (*fct)(struct proxy *))
408{
409 struct post_proxy_check_fct *b;
410
411 b = calloc(1, sizeof(*b));
412 if (!b) {
413 fprintf(stderr, "out of memory\n");
414 exit(1);
415 }
416 b->fct = fct;
417 LIST_ADDQ(&post_proxy_check_list, &b->list);
418}
419
420/* used to register some initialization functions to call for each server after
421 * the checks.
422 */
423void hap_register_post_server_check(int (*fct)(struct server *))
424{
425 struct post_server_check_fct *b;
426
427 b = calloc(1, sizeof(*b));
428 if (!b) {
429 fprintf(stderr, "out of memory\n");
430 exit(1);
431 }
432 b->fct = fct;
433 LIST_ADDQ(&post_server_check_list, &b->list);
434}
435
Willy Tarreau05554e62016-12-21 20:46:26 +0100436/* used to register some de-initialization functions to call after everything
437 * has stopped.
438 */
439void hap_register_post_deinit(void (*fct)())
440{
441 struct post_deinit_fct *b;
442
443 b = calloc(1, sizeof(*b));
444 if (!b) {
445 fprintf(stderr, "out of memory\n");
446 exit(1);
447 }
448 b->fct = fct;
449 LIST_ADDQ(&post_deinit_list, &b->list);
450}
451
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200452/* used to register some per proxy de-initialization functions to call after
453 * everything has stopped.
454 */
455void hap_register_proxy_deinit(void (*fct)(struct proxy *))
456{
457 struct proxy_deinit_fct *b;
458
459 b = calloc(1, sizeof(*b));
460 if (!b) {
461 fprintf(stderr, "out of memory\n");
462 exit(1);
463 }
464 b->fct = fct;
465 LIST_ADDQ(&proxy_deinit_list, &b->list);
466}
467
468
469/* used to register some per server de-initialization functions to call after
470 * everything has stopped.
471 */
472void hap_register_server_deinit(void (*fct)(struct server *))
473{
474 struct server_deinit_fct *b;
475
476 b = calloc(1, sizeof(*b));
477 if (!b) {
478 fprintf(stderr, "out of memory\n");
479 exit(1);
480 }
481 b->fct = fct;
482 LIST_ADDQ(&server_deinit_list, &b->list);
483}
484
Willy Tarreau082b6282019-05-22 14:42:12 +0200485/* used to register some allocation functions to call for each thread. */
486void hap_register_per_thread_alloc(int (*fct)())
487{
488 struct per_thread_alloc_fct *b;
489
490 b = calloc(1, sizeof(*b));
491 if (!b) {
492 fprintf(stderr, "out of memory\n");
493 exit(1);
494 }
495 b->fct = fct;
496 LIST_ADDQ(&per_thread_alloc_list, &b->list);
497}
498
Christopher Faulet415f6112017-07-25 16:52:58 +0200499/* used to register some initialization functions to call for each thread. */
500void hap_register_per_thread_init(int (*fct)())
501{
502 struct per_thread_init_fct *b;
503
504 b = calloc(1, sizeof(*b));
505 if (!b) {
506 fprintf(stderr, "out of memory\n");
507 exit(1);
508 }
509 b->fct = fct;
510 LIST_ADDQ(&per_thread_init_list, &b->list);
511}
512
513/* used to register some de-initialization functions to call for each thread. */
514void hap_register_per_thread_deinit(void (*fct)())
515{
516 struct per_thread_deinit_fct *b;
517
518 b = calloc(1, sizeof(*b));
519 if (!b) {
520 fprintf(stderr, "out of memory\n");
521 exit(1);
522 }
523 b->fct = fct;
524 LIST_ADDQ(&per_thread_deinit_list, &b->list);
525}
526
Willy Tarreau082b6282019-05-22 14:42:12 +0200527/* used to register some free functions to call for each thread. */
528void hap_register_per_thread_free(int (*fct)())
529{
530 struct per_thread_free_fct *b;
531
532 b = calloc(1, sizeof(*b));
533 if (!b) {
534 fprintf(stderr, "out of memory\n");
535 exit(1);
536 }
537 b->fct = fct;
538 LIST_ADDQ(&per_thread_free_list, &b->list);
539}
540
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100541static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200542{
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200543 struct utsname utsname;
544
Willy Tarreau08dd2022019-11-21 18:07:30 +0100545 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
546 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100547
548 if (strlen(PRODUCT_URL_BUGS) > 0) {
549 char base_version[20];
550 int dots = 0;
551 char *del;
552
553 /* only retrieve the base version without distro-specific extensions */
554 for (del = haproxy_version; *del; del++) {
555 if (*del == '.')
556 dots++;
557 else if (*del < '0' || *del > '9')
558 break;
559 }
560
561 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
562 if (dots < 2)
563 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
564 else
565 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
566 }
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200567
568 if (uname(&utsname) == 0) {
569 printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
570 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200571}
572
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100573static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100574{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100575 struct build_opts_str *item;
576
Willy Tarreau7b066db2007-12-02 11:28:59 +0100577 printf("Build options :"
578#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100579 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100580#endif
581#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100582 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100583#endif
584#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100585 "\n CC = " BUILD_CC
586#endif
587#ifdef BUILD_CFLAGS
588 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100589#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100590#ifdef BUILD_OPTIONS
591 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100592#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100593#ifdef BUILD_FEATURES
594 "\n\nFeature list : " BUILD_FEATURES
595#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200596 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100597 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200598 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100599 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200600
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100601 list_for_each_entry(item, &build_opts_list, list) {
602 puts(item->str);
603 }
604
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100605 putchar('\n');
606
Willy Tarreaube5b6852009-10-03 18:57:08 +0200607 list_pollers(stdout);
608 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200609 list_mux_proto(stdout);
610 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100611 list_services(stdout);
612 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100613 list_filters(stdout);
614 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100615}
616
Willy Tarreaubaaee002006-06-26 02:48:02 +0200617/*
618 * This function prints the command line usage and exits
619 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100620static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200621{
622 display_version();
623 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200624 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200625 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200626 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100627 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200628 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200629 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200630 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200631 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200632 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100633#if defined(USE_SYSTEMD)
634 " -Ws master-worker mode with systemd notify support.\n"
635#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200636 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200637 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100638 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200639 " -m limits the usable amount of memory (in MB)\n"
640 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200641 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200642 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200643#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200644 " -de disables epoll() usage even when available\n"
645#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200646#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200647 " -dk disables kqueue() usage even when available\n"
648#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200649#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000650 " -dv disables event ports usage even when available\n"
651#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200652#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200653 " -dp disables poll() usage even when available\n"
654#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200655#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100656 " -dS disables splice usage (broken on old kernels)\n"
657#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200658#if defined(USE_GETADDRINFO)
659 " -dG disables getaddrinfo() usage\n"
660#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000661#if defined(SO_REUSEPORT)
662 " -dR disables SO_REUSEPORT usage\n"
663#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100664 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100665 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200666 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200667 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200668 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200669 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200670 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100671 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200672 exit(1);
673}
674
675
676
677/*********************************************************************/
678/* more specific functions ***************************************/
679/*********************************************************************/
680
William Lallemand73b85e72017-06-01 17:38:51 +0200681/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
682 * pids the signal was correctly delivered to.
683 */
William Lallemande25473c2019-04-01 11:29:56 +0200684int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200685{
686 int p;
687 int ret = 0;
688 for (p = 0; p < nb_oldpids; p++)
689 if (kill(oldpids[p], sig) == 0)
690 ret++;
691 return ret;
692}
693
William Lallemand75ea0a02017-11-15 19:02:58 +0100694/*
William Lallemand73b85e72017-06-01 17:38:51 +0200695 * remove a pid forom the olpid array and decrease nb_oldpids
696 * return 1 pid was found otherwise return 0
697 */
698
699int delete_oldpid(int pid)
700{
701 int i;
702
703 for (i = 0; i < nb_oldpids; i++) {
704 if (oldpids[i] == pid) {
705 oldpids[i] = oldpids[nb_oldpids - 1];
706 oldpids[nb_oldpids - 1] = 0;
707 nb_oldpids--;
708 return 1;
709 }
710 }
711 return 0;
712}
713
William Lallemand85b0bd92017-06-01 17:38:53 +0200714
715static void get_cur_unixsocket()
716{
717 /* if -x was used, try to update the stat socket if not available anymore */
718 if (global.stats_fe) {
719 struct bind_conf *bind_conf;
720
721 /* pass through all stats socket */
722 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
723 struct listener *l;
724
725 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
726
727 if (l->addr.ss_family == AF_UNIX &&
728 (bind_conf->level & ACCESS_FD_LISTENERS)) {
729 const struct sockaddr_un *un;
730
731 un = (struct sockaddr_un *)&l->addr;
732 /* priority to old_unixsocket */
733 if (!cur_unixsocket) {
734 cur_unixsocket = strdup(un->sun_path);
735 } else {
736 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
737 free(cur_unixsocket);
738 cur_unixsocket = strdup(old_unixsocket);
739 return;
740 }
741 }
742 }
743 }
744 }
745 }
746 if (!cur_unixsocket && old_unixsocket)
747 cur_unixsocket = strdup(old_unixsocket);
748}
749
William Lallemand73b85e72017-06-01 17:38:51 +0200750/*
751 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800752 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200753 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100754void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200755{
William Lallemand00417412020-06-05 14:08:41 +0200756 char **next_argv = NULL;
757 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200758 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200759 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200760 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100761 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100762 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200763
764 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100765#if defined(USE_SYSTEMD)
766 if (global.tune.options & GTUNE_USE_SYSTEMD)
767 sd_notify(0, "RELOADING=1");
768#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200769 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
770
William Lallemandbc193052018-09-11 10:06:26 +0200771 mworker_proc_list_to_env(); /* put the children description in the env */
772
William Lallemand7c756a82018-11-26 11:53:40 +0100773 /* during the reload we must ensure that every FDs that can't be
774 * reuse (ie those that are not referenced in the proc_list)
775 * are closed or they will leak. */
776
777 /* close the listeners FD */
778 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200779
780 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
781 /* close the poller FD and the thread waker pipe FD */
782 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
783 ptdf->fct();
784 if (fdtab)
785 deinit_pollers();
786 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200787#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200788 /* close random device FDs */
789 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100790#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100791
Willy Tarreau8dca1952019-03-01 10:21:55 +0100792 /* restore the initial FD limits */
793 limit.rlim_cur = rlim_fd_cur_at_boot;
794 limit.rlim_max = rlim_fd_max_at_boot;
795 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
796 getrlimit(RLIMIT_NOFILE, &limit);
797 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
798 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
799 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
800 }
801
William Lallemand73b85e72017-06-01 17:38:51 +0200802 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200803 while (old_argv[old_argc])
804 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200805
William Lallemand85b0bd92017-06-01 17:38:53 +0200806 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand00417412020-06-05 14:08:41 +0200807 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1, sizeof(char *));
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{
940 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100941 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200942}
943
944/*
945 * upon SIGTTIN, let's have a soft stop.
946 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100947static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200948{
Willy Tarreaube58c382011-07-24 18:28:10 +0200949 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200950}
951
952/*
953 * this function dumps every server's state when the process receives SIGHUP.
954 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100955static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200956{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100957 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200958
Christopher Faulet767a84b2017-11-24 16:50:31 +0100959 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200960 while (p) {
961 struct server *s = p->srv;
962
963 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
964 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100965 chunk_printf(&trash,
966 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
967 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200968 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100969 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200970 ha_warning("%s\n", trash.area);
971 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200972 s = s->next;
973 }
974
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200975 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
976 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100977 chunk_printf(&trash,
978 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
979 p->id,
980 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 +0200981 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100982 chunk_printf(&trash,
983 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
984 p->id,
985 (p->srv_bck) ? "is running on backup servers" : "has no server available",
986 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 +0200987 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100988 chunk_printf(&trash,
989 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
990 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
991 p->id, p->srv_act, p->srv_bck,
992 p->feconn, p->beconn, p->totpend, p->nbpend, p->fe_counters.cum_conn, p->be_counters.cum_conn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200993 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200994 ha_warning("%s\n", trash.area);
995 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200996
997 p = p->next;
998 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200999}
1000
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001001static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001002{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001003 /* dump memory usage then free everything possible */
1004 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001005 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001006}
1007
William Lallemande1340412017-12-28 16:09:36 +01001008/*
1009 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1010 * If <fd> < 0, it opens /dev/null and use it to dup
1011 *
1012 * In the case of chrooting, you have to open /dev/null before the chroot, and
1013 * pass the <fd> to this function
1014 */
1015static void stdio_quiet(int fd)
1016{
1017 if (fd < 0)
1018 fd = open("/dev/null", O_RDWR, 0);
1019
1020 if (fd > -1) {
1021 fclose(stdin);
1022 fclose(stdout);
1023 fclose(stderr);
1024
1025 dup2(fd, 0);
1026 dup2(fd, 1);
1027 dup2(fd, 2);
1028 if (fd > 2)
1029 close(fd);
1030 return;
1031 }
1032
1033 ha_alert("Cannot open /dev/null\n");
1034 exit(EXIT_FAILURE);
1035}
1036
1037
Joseph Herlant03420902018-11-15 10:41:50 -08001038/* This function checks if cfg_cfgfiles contains directories.
1039 * If it finds one, it adds all the files (and only files) it contains
1040 * in cfg_cfgfiles in place of the directory (and removes the directory).
1041 * It adds the files in lexical order.
1042 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001043 * It doesn't add files with name starting with '.'
1044 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001045static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001046{
1047 struct wordlist *wl, *wlb;
1048 char *err = NULL;
1049
1050 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1051 struct stat file_stat;
1052 struct dirent **dir_entries = NULL;
1053 int dir_entries_nb;
1054 int dir_entries_it;
1055
1056 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001057 ha_alert("Cannot open configuration file/directory %s : %s\n",
1058 wl->s,
1059 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001060 exit(1);
1061 }
1062
1063 if (!S_ISDIR(file_stat.st_mode))
1064 continue;
1065
1066 /* from this point wl->s is a directory */
1067
1068 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1069 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001070 ha_alert("Cannot open configuration directory %s : %s\n",
1071 wl->s,
1072 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001073 exit(1);
1074 }
1075
1076 /* for each element in the directory wl->s */
1077 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1078 struct dirent *dir_entry = dir_entries[dir_entries_it];
1079 char *filename = NULL;
1080 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1081
1082 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001083 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001084 */
1085 if (dir_entry->d_name[0] == '.' ||
1086 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1087 goto next_dir_entry;
1088
1089 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001090 ha_alert("Cannot load configuration files %s : out of memory.\n",
1091 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001092 exit(1);
1093 }
1094
1095 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001096 ha_alert("Cannot open configuration file %s : %s\n",
1097 wl->s,
1098 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001099 exit(1);
1100 }
1101
1102 /* don't add anything else than regular file in cfg_cfgfiles
1103 * this way we avoid loops
1104 */
1105 if (!S_ISREG(file_stat.st_mode))
1106 goto next_dir_entry;
1107
1108 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001109 ha_alert("Cannot load configuration files %s : %s\n",
1110 filename,
1111 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001112 exit(1);
1113 }
1114
1115next_dir_entry:
1116 free(filename);
1117 free(dir_entry);
1118 }
1119
1120 free(dir_entries);
1121
1122 /* remove the current directory (wl) from cfg_cfgfiles */
1123 free(wl->s);
1124 LIST_DEL(&wl->list);
1125 free(wl);
1126 }
1127
1128 free(err);
1129}
1130
Olivier Houchardf73629d2017-04-05 22:33:04 +02001131static int get_old_sockets(const char *unixsocket)
1132{
1133 char *cmsgbuf = NULL, *tmpbuf = NULL;
1134 int *tmpfd = NULL;
1135 struct sockaddr_un addr;
1136 struct cmsghdr *cmsg;
1137 struct msghdr msghdr;
1138 struct iovec iov;
1139 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001140 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001141 int sock = -1;
1142 int ret = -1;
1143 int ret2 = -1;
1144 int fd_nb;
1145 int got_fd = 0;
1146 int i = 0;
1147 size_t maxoff = 0, curoff = 0;
1148
1149 memset(&msghdr, 0, sizeof(msghdr));
1150 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1151 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001152 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001153 goto out;
1154 }
1155 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1156 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001157 ha_warning("Failed to connect to the old process socket '%s'\n",
1158 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001159 goto out;
1160 }
Willy Tarreau719e07c2019-12-11 16:29:10 +01001161 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path) - 1);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001162 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1163 addr.sun_family = PF_UNIX;
1164 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1165 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001166 ha_warning("Failed to connect to the old process socket '%s'\n",
1167 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001168 goto out;
1169 }
Olivier Houchard54740872017-04-06 14:45:14 +02001170 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001171 iov.iov_base = &fd_nb;
1172 iov.iov_len = sizeof(fd_nb);
1173 msghdr.msg_iov = &iov;
1174 msghdr.msg_iovlen = 1;
1175 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1176 /* First, get the number of file descriptors to be received */
1177 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001178 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001179 goto out;
1180 }
1181 if (fd_nb == 0) {
1182 ret = 0;
1183 goto out;
1184 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001185 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001186 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001187 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001188 goto out;
1189 }
1190 tmpfd = malloc(fd_nb * sizeof(int));
1191 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001192 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001193 goto out;
1194 }
1195 msghdr.msg_control = cmsgbuf;
1196 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001197 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001198 do {
1199 int ret3;
1200
1201 iov.iov_base = tmpbuf + curoff;
1202 ret = recvmsg(sock, &msghdr, 0);
1203 if (ret == -1 && errno == EINTR)
1204 continue;
1205 if (ret <= 0)
1206 break;
1207 /* Send an ack to let the sender know we got the sockets
1208 * and it can send some more
1209 */
1210 do {
1211 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1212 } while (ret3 == -1 && errno == EINTR);
1213 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1214 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1215 if (cmsg->cmsg_level == SOL_SOCKET &&
1216 cmsg->cmsg_type == SCM_RIGHTS) {
1217 size_t totlen = cmsg->cmsg_len -
1218 CMSG_LEN(0);
1219 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001220 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001221 goto out;
1222 }
1223 /*
1224 * Be paranoid and use memcpy() to avoid any
1225 * potential alignement issue.
1226 */
1227 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1228 got_fd += totlen / sizeof(int);
1229 }
1230 }
1231 curoff += ret;
1232 } while (got_fd < fd_nb);
1233
1234 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001235 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1236 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001237 goto out;
1238 }
1239 maxoff = curoff;
1240 curoff = 0;
1241 for (i = 0; i < got_fd; i++) {
1242 int fd = tmpfd[i];
1243 socklen_t socklen;
1244 int len;
1245
1246 xfer_sock = calloc(1, sizeof(*xfer_sock));
1247 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001248 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001249 break;
1250 }
1251 xfer_sock->fd = -1;
1252
1253 socklen = sizeof(xfer_sock->addr);
1254 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001255 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001256 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001257 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001258 continue;
1259 }
1260 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001261 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001262 goto out;
1263 }
1264 len = tmpbuf[curoff++];
1265 if (len > 0) {
1266 /* We have a namespace */
1267 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001268 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001269 goto out;
1270 }
1271 xfer_sock->namespace = malloc(len + 1);
1272 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001273 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001274 goto out;
1275 }
1276 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1277 xfer_sock->namespace[len] = 0;
1278 curoff += len;
1279 }
1280 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001281 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001282 goto out;
1283 }
1284 len = tmpbuf[curoff++];
1285 if (len > 0) {
1286 /* We have an interface */
1287 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001288 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001289 goto out;
1290 }
1291 xfer_sock->iface = malloc(len + 1);
1292 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001293 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001294 goto out;
1295 }
1296 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001297 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001298 curoff += len;
1299 }
1300 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001301 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001302 goto out;
1303 }
1304 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1305 sizeof(xfer_sock->options));
1306 curoff += sizeof(xfer_sock->options);
1307
1308 xfer_sock->fd = fd;
1309 if (xfer_sock_list)
1310 xfer_sock_list->prev = xfer_sock;
1311 xfer_sock->next = xfer_sock_list;
1312 xfer_sock->prev = NULL;
1313 xfer_sock_list = xfer_sock;
1314 xfer_sock = NULL;
1315 }
1316
1317 ret2 = 0;
1318out:
1319 /* If we failed midway make sure to close the remaining
1320 * file descriptors
1321 */
1322 if (tmpfd != NULL && i < got_fd) {
1323 for (; i < got_fd; i++) {
1324 close(tmpfd[i]);
1325 }
1326 }
1327 free(tmpbuf);
1328 free(tmpfd);
1329 free(cmsgbuf);
1330 if (sock != -1)
1331 close(sock);
1332 if (xfer_sock) {
1333 free(xfer_sock->namespace);
1334 free(xfer_sock->iface);
1335 if (xfer_sock->fd != -1)
1336 close(xfer_sock->fd);
1337 free(xfer_sock);
1338 }
1339 return (ret2);
1340}
1341
Willy Tarreaubaaee002006-06-26 02:48:02 +02001342/*
William Lallemand73b85e72017-06-01 17:38:51 +02001343 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001344 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001345 * Return an allocated copy of argv
1346 */
1347
1348static char **copy_argv(int argc, char **argv)
1349{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001350 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001351
1352 newargv = calloc(argc + 2, sizeof(char *));
1353 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001354 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001355 return NULL;
1356 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001357 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001358
William Lallemanddf6c5a82020-06-04 17:40:23 +02001359 /* first copy argv[0] */
1360 *newargv++ = *argv++;
1361 argc--;
1362
1363 while (argc > 0) {
1364 if (**argv != '-') {
1365 /* non options are copied but will fail in the argument parser */
1366 *newargv++ = *argv++;
1367 argc--;
1368
1369 } else {
1370 char *flag;
1371
1372 flag = *argv + 1;
1373
1374 if (flag[0] == '-' && flag[1] == 0) {
1375 /* "--\0" copy every arguments till the end of argv */
1376 *newargv++ = *argv++;
1377 argc--;
1378
1379 while (argc > 0) {
1380 *newargv++ = *argv++;
1381 argc--;
1382 }
1383 } else {
1384 switch (*flag) {
1385 case 's':
1386 /* -sf / -st and their parameters are ignored */
1387 if (flag[1] == 'f' || flag[1] == 't') {
1388 argc--;
1389 argv++;
1390 /* The list can't contain a negative value since the only
1391 way to know the end of this list is by looking for the
1392 next option or the end of the options */
1393 while (argc > 0 && argv[0][0] != '-') {
1394 argc--;
1395 argv++;
1396 }
1397 }
1398 break;
1399
1400 case 'x':
1401 /* this option and its parameter are ignored */
1402 argc--;
1403 argv++;
1404 if (argc > 0) {
1405 argc--;
1406 argv++;
1407 }
1408 break;
1409
1410 case 'C':
1411 case 'n':
1412 case 'm':
1413 case 'N':
1414 case 'L':
1415 case 'f':
1416 case 'p':
1417 case 'S':
1418 /* these options have only 1 parameter which must be copied and can start with a '-' */
1419 *newargv++ = *argv++;
1420 argc--;
1421 if (argc == 0)
1422 goto error;
1423 *newargv++ = *argv++;
1424 argc--;
1425 break;
1426 default:
1427 /* for other options just copy them without parameters, this is also done
1428 * for options like "--foo", but this will fail in the argument parser.
1429 * */
1430 *newargv++ = *argv++;
1431 argc--;
1432 break;
1433 }
William Lallemand73b85e72017-06-01 17:38:51 +02001434 }
1435 }
William Lallemand73b85e72017-06-01 17:38:51 +02001436 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001437
William Lallemanddf6c5a82020-06-04 17:40:23 +02001438 return retargv;
1439
1440error:
1441 free(retargv);
1442 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001443}
1444
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001445
1446/* Performs basic random seed initialization. The main issue with this is that
1447 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1448 * which means that there will only be 4 billion possible random sequences once
1449 * srandom() is called, regardless of the internal state. Not calling it is
1450 * even worse as we'll always produce the same randoms sequences. What we do
1451 * here is to create an initial sequence from various entropy sources, hash it
1452 * using SHA1 and keep the resulting 160 bits available globally.
1453 *
1454 * We initialize the current process with the first 32 bits before starting the
1455 * polling loop, where all this will be changed to have process specific and
1456 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001457 *
1458 * Before starting threads, it's still possible to call random() as srandom()
1459 * is initialized from this, but after threads and/or processes are started,
1460 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001461 */
1462static void ha_random_boot(char *const *argv)
1463{
1464 unsigned char message[256];
1465 unsigned char *m = message;
1466 struct timeval tv;
1467 blk_SHA_CTX ctx;
1468 unsigned long l;
1469 int fd;
1470 int i;
1471
1472 /* start with current time as pseudo-random seed */
1473 gettimeofday(&tv, NULL);
1474 write_u32(m, tv.tv_sec); m += 4;
1475 write_u32(m, tv.tv_usec); m += 4;
1476
1477 /* PID and PPID add some OS-based randomness */
1478 write_u16(m, getpid()); m += 2;
1479 write_u16(m, getppid()); m += 2;
1480
1481 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1482 fd = open("/dev/urandom", O_RDONLY);
1483 if (fd >= 0) {
1484 i = read(fd, m, 20);
1485 if (i > 0)
1486 m += i;
1487 close(fd);
1488 }
1489
1490 /* take up to 160 bits bytes from openssl (non-blocking) */
1491#ifdef USE_OPENSSL
1492 if (RAND_bytes(m, 20) == 1)
1493 m += 20;
1494#endif
1495
1496 /* take 160 bits from existing random in case it was already initialized */
1497 for (i = 0; i < 5; i++) {
1498 write_u32(m, random());
1499 m += 4;
1500 }
1501
1502 /* stack address (benefit form operating system's ASLR) */
1503 l = (unsigned long)&m;
1504 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1505
1506 /* argv address (benefit form operating system's ASLR) */
1507 l = (unsigned long)&argv;
1508 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1509
1510 /* use tv_usec again after all the operations above */
1511 gettimeofday(&tv, NULL);
1512 write_u32(m, tv.tv_usec); m += 4;
1513
1514 /*
1515 * At this point, ~84-92 bytes have been used
1516 */
1517
1518 /* finish with the hostname */
1519 strncpy((char *)m, hostname, message + sizeof(message) - m);
1520 m += strlen(hostname);
1521
1522 /* total message length */
1523 l = m - message;
1524
1525 memset(&ctx, 0, sizeof(ctx));
1526 blk_SHA1_Init(&ctx);
1527 blk_SHA1_Update(&ctx, message, l);
1528 blk_SHA1_Final(boot_seed, &ctx);
1529
1530 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001531 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001532}
1533
Willy Tarreau5a023f02019-03-01 14:19:31 +01001534/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1535 * setting, and returns it. It may return -1 meaning "unlimited" if some
1536 * unlimited proxies have been found and the global.maxconn value is not yet
1537 * set. It may also return a value greater than maxconn if it's not yet set.
1538 * Note that a value of zero means there is no need for pipes. -1 is never
1539 * returned if global.maxconn is valid.
1540 */
1541static int compute_ideal_maxpipes()
1542{
1543 struct proxy *cur;
1544 int nbfe = 0, nbbe = 0;
1545 int unlimited = 0;
1546 int pipes;
1547 int max;
1548
1549 for (cur = proxies_list; cur; cur = cur->next) {
1550 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1551 if (cur->cap & PR_CAP_FE) {
1552 max = cur->maxconn;
1553 nbfe += max;
1554 if (!max) {
1555 unlimited = 1;
1556 break;
1557 }
1558 }
1559 if (cur->cap & PR_CAP_BE) {
1560 max = cur->fullconn ? cur->fullconn : global.maxconn;
1561 nbbe += max;
1562 if (!max) {
1563 unlimited = 1;
1564 break;
1565 }
1566 }
1567 }
1568 }
1569
1570 pipes = MAX(nbfe, nbbe);
1571 if (global.maxconn) {
1572 if (pipes > global.maxconn || unlimited)
1573 pipes = global.maxconn;
1574 } else if (unlimited) {
1575 pipes = -1;
1576 }
1577
1578 return pipes >= 4 ? pipes / 4 : pipes;
1579}
1580
Willy Tarreauac350932019-03-01 15:43:14 +01001581/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1582 * rlimits and computes an ideal maxconn. It's meant to be called only when
1583 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001584 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1585 * default 100) is returned as it is expected that it will even run on tight
1586 * environments, and will maintain compatibility with previous packages that
1587 * used to rely on this value as the default one. The system will emit a
1588 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001589 */
1590static int compute_ideal_maxconn()
1591{
1592 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1593 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1594 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001595 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001596 int maxconn;
1597
1598 /* we have to take into account these elements :
1599 * - number of engine_fds, which inflates the number of FD needed per
1600 * connection by this number.
1601 * - number of pipes per connection on average : for the unlimited
1602 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1603 * fixed value of 2*pipes.
1604 * - two FDs per connection
1605 */
1606
1607 /* subtract listeners and checks */
1608 remain -= global.maxsock;
1609
Willy Tarreau3f200852019-03-14 19:13:17 +01001610 /* one epoll_fd/kqueue_fd per thread */
1611 remain -= global.nbthread;
1612
1613 /* one wake-up pipe (2 fd) per thread */
1614 remain -= 2 * global.nbthread;
1615
Willy Tarreauac350932019-03-01 15:43:14 +01001616 /* Fixed pipes values : we only subtract them if they're not larger
1617 * than the remaining FDs because pipes are optional.
1618 */
1619 if (pipes >= 0 && pipes * 2 < remain)
1620 remain -= pipes * 2;
1621
1622 if (pipes < 0) {
1623 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1624 * = maxconn * (2 + 0.5 + engine_fds)
1625 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1626 */
1627 maxconn = 2 * remain / (5 + 2 * engine_fds);
1628 } else {
1629 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1630 * = maxconn * (2 + engine_fds)
1631 */
1632 maxconn = remain / (2 + engine_fds);
1633 }
1634
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001635 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001636}
1637
Willy Tarreaua409f302020-03-10 17:08:53 +01001638/* computes the estimated maxsock value for the given maxconn based on the
1639 * possibly set global.maxpipes and existing partial global.maxsock. It may
1640 * temporarily change global.maxconn for the time needed to propagate the
1641 * computations, and will reset it.
1642 */
1643static int compute_ideal_maxsock(int maxconn)
1644{
1645 int maxpipes = global.maxpipes;
1646 int maxsock = global.maxsock;
1647
1648
1649 if (!maxpipes) {
1650 int old_maxconn = global.maxconn;
1651
1652 global.maxconn = maxconn;
1653 maxpipes = compute_ideal_maxpipes();
1654 global.maxconn = old_maxconn;
1655 }
1656
1657 maxsock += maxconn * 2; /* each connection needs two sockets */
1658 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1659 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1660 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1661
1662 /* compute fd used by async engines */
1663 if (global.ssl_used_async_engines) {
1664 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1665
1666 maxsock += maxconn * sides * global.ssl_used_async_engines;
1667 }
1668 return maxsock;
1669}
1670
Willy Tarreau304e17e2020-03-10 17:54:54 +01001671/* Tests if it is possible to set the current process' RLIMIT_NOFILE to
1672 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1673 * value is accepted, non-zero otherwise. This is used to determine if an
1674 * automatic limit may be applied or not. When it is not, the caller knows that
1675 * the highest we can do is the rlim_max at boot. In case of error, we return
1676 * that the setting is possible, so that we defer the error processing to the
1677 * final stage in charge of enforcing this.
1678 */
1679static int check_if_maxsock_permitted(int maxsock)
1680{
1681 struct rlimit orig_limit, test_limit;
1682 int ret;
1683
1684 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1685 return 1;
1686
1687 /* don't go further if we can't even set to what we have */
1688 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1689 return 1;
1690
1691 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1692 test_limit.rlim_cur = test_limit.rlim_max;
1693 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1694
1695 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1696 return 1;
1697
1698 return ret == 0;
1699}
1700
1701
William Lallemand73b85e72017-06-01 17:38:51 +02001702/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001703 * This function initializes all the necessary variables. It only returns
1704 * if everything is OK. If something fails, it exits.
1705 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001706static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001707{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001708 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001709 char *tmp;
1710 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001711 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001712 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001713 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001714 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001715 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001716 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001717 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001718 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001719
Christopher Faulete3a5e352017-10-24 13:53:54 +02001720 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001721 old_argv = copy_argv(argc, argv);
1722 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001723 ha_alert("failed to copy argv.\n");
1724 exit(1);
1725 }
William Lallemand73b85e72017-06-01 17:38:51 +02001726
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001727 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001728 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001729 exit(1);
1730 }
David du Colombier7af46052012-05-16 14:16:48 +02001731
Emeric Brun2b920a12010-09-23 18:30:22 +02001732 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1733 * the string in case of truncation, and at least FreeBSD appears not to do
1734 * it.
1735 */
1736 memset(hostname, 0, sizeof(hostname));
1737 gethostname(hostname, sizeof(hostname) - 1);
1738 memset(localpeer, 0, sizeof(localpeer));
1739 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001740 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001741
William Lallemand24c928c2020-01-14 17:58:18 +01001742 /* we were in mworker mode, we should restart in mworker mode */
1743 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1744 global.mode |= MODE_MWORKER;
1745
Willy Tarreaubaaee002006-06-26 02:48:02 +02001746 /*
1747 * Initialize the previously static variables.
1748 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001749
Willy Tarreau173d9952018-01-26 21:48:23 +01001750 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001751 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001752
Willy Tarreaubaaee002006-06-26 02:48:02 +02001753
1754#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001755 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001756#endif
1757
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001758 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001759 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001760 start_date = now;
1761
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001762 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001763
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001764 if (init_acl() != 0)
1765 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001766
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001767 /* Initialise lua. */
1768 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001769
Christopher Fauletff2613e2016-11-09 11:36:17 +01001770 /* Initialize process vars */
1771 vars_init(&global.vars, SCOPE_PROC);
1772
Willy Tarreau43b78992009-01-25 15:42:27 +01001773 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001774#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001775 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001776#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001777#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001778 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001779#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001780#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001781 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001782#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001783#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001784 global.tune.options |= GTUNE_USE_EVPORTS;
1785#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001786#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001787 global.tune.options |= GTUNE_USE_SPLICE;
1788#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001789#if defined(USE_GETADDRINFO)
1790 global.tune.options |= GTUNE_USE_GAI;
1791#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001792#if defined(SO_REUSEPORT)
1793 global.tune.options |= GTUNE_USE_REUSEPORT;
1794#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001795
1796 pid = getpid();
1797 progname = *argv;
1798 while ((tmp = strchr(progname, '/')) != NULL)
1799 progname = tmp + 1;
1800
Kevinm48936af2010-12-22 16:08:21 +00001801 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001802 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001803
Willy Tarreaubaaee002006-06-26 02:48:02 +02001804 argc--; argv++;
1805 while (argc > 0) {
1806 char *flag;
1807
1808 if (**argv == '-') {
1809 flag = *argv+1;
1810
1811 /* 1 arg */
1812 if (*flag == 'v') {
1813 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001814 if (flag[1] == 'v') /* -vv */
1815 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001816 exit(0);
1817 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001818#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001819 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001820 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001821#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001822#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001823 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001824 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001825#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001826#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001827 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001828 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001829#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001830#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001831 else if (*flag == 'd' && flag[1] == 'v')
1832 global.tune.options &= ~GTUNE_USE_EVPORTS;
1833#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001834#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001835 else if (*flag == 'd' && flag[1] == 'S')
1836 global.tune.options &= ~GTUNE_USE_SPLICE;
1837#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001838#if defined(USE_GETADDRINFO)
1839 else if (*flag == 'd' && flag[1] == 'G')
1840 global.tune.options &= ~GTUNE_USE_GAI;
1841#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001842#if defined(SO_REUSEPORT)
1843 else if (*flag == 'd' && flag[1] == 'R')
1844 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1845#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001846 else if (*flag == 'd' && flag[1] == 'V')
1847 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001848 else if (*flag == 'V')
1849 arg_mode |= MODE_VERBOSE;
1850 else if (*flag == 'd' && flag[1] == 'b')
1851 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001852 else if (*flag == 'd' && flag[1] == 'W')
1853 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001854 else if (*flag == 'd' && flag[1] == 'M')
1855 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001856 else if (*flag == 'd' && flag[1] == 'r')
1857 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001858 else if (*flag == 'd')
1859 arg_mode |= MODE_DEBUG;
1860 else if (*flag == 'c')
1861 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001862 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001863 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001864 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001865 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001866#if defined(USE_SYSTEMD)
1867 global.tune.options |= GTUNE_USE_SYSTEMD;
1868#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001869 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 +01001870 usage(progname);
1871#endif
1872 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001873 else if (*flag == 'W')
1874 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001875 else if (*flag == 'q')
1876 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001877 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001878 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001879 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001880 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001881 }
William Lallemand4fc09692017-06-19 16:37:19 +02001882 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001883 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001884 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001885
Olivier Houchardf73629d2017-04-05 22:33:04 +02001886 argv++;
1887 argc--;
1888 }
William Lallemande7361152018-10-26 14:47:36 +02001889 else if (*flag == 'S') {
1890 struct wordlist *c;
1891
William Lallemanda6b32492020-06-04 23:49:20 +02001892 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001893 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1894 usage(progname);
1895 }
1896 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1897 ha_alert("Cannot allocate memory\n");
1898 exit(EXIT_FAILURE);
1899 }
1900 LIST_ADD(&mworker_cli_conf, &c->list);
1901
1902 argv++;
1903 argc--;
1904 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001905 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1906 /* list of pids to finish ('f') or terminate ('t') */
1907
1908 if (flag[1] == 'f')
1909 oldpids_sig = SIGUSR1; /* finish then exit */
1910 else
1911 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001912 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001913 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001914 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1915 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001916 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001917 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001918 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001919 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001920 errno = 0;
1921 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1922 if (errno) {
1923 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1924 flag,
1925 *argv, strerror(errno));
1926 exit(1);
1927 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001928 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001929 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001930 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1931 flag, endptr);
1932 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001933 }
Chris Lane236062f2018-02-05 23:15:44 +00001934 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001935 if (oldpids[nb_oldpids] <= 0)
1936 usage(progname);
1937 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001938 }
1939 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001940 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1941 /* now that's a cfgfile list */
1942 argv++; argc--;
1943 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001944 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001945 ha_alert("Cannot load configuration file/directory %s : %s\n",
1946 *argv,
1947 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001948 exit(1);
1949 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001950 argv++; argc--;
1951 }
1952 break;
1953 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001954 else { /* >=2 args */
1955 argv++; argc--;
1956 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001957 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001958
1959 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001960 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001961 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001962 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001963 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001964 case 'L' :
1965 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1966 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1967 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001968 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001969 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001970 ha_alert("Cannot load configuration file/directory %s : %s\n",
1971 *argv,
1972 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001973 exit(1);
1974 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001975 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001976 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001977 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001978 }
1979 }
1980 }
1981 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001982 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001983 argv++; argc--;
1984 }
1985
Christopher Faulete3a5e352017-10-24 13:53:54 +02001986 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001987 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001988
William Lallemand944e6192018-11-21 15:48:31 +01001989 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001990 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001991 global.mode |= MODE_MWORKER_WAIT;
1992 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001993 }
1994
1995 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1996 atexit_flag = 1;
1997 atexit(reexec_on_failure);
1998 }
1999
Willy Tarreau576132e2011-09-10 19:26:56 +02002000 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002001 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02002002 exit(1);
2003 }
2004
Willy Tarreaubaaee002006-06-26 02:48:02 +02002005 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02002006
2007 init_default_instance();
2008
William Lallemand944e6192018-11-21 15:48:31 +01002009 /* in wait mode, we don't try to read the configuration files */
2010 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02002011 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01002012
William Lallemand944e6192018-11-21 15:48:31 +01002013 /* handle cfgfiles that are actually directories */
2014 cfgfiles_expand_directories();
2015
2016 if (LIST_ISEMPTY(&cfg_cfgfiles))
2017 usage(progname);
2018
2019
2020 list_for_each_entry(wl, &cfg_cfgfiles, list) {
2021 int ret;
2022
William Lallemand7b302d82019-05-20 11:15:37 +02002023 if (trash->data)
2024 chunk_appendf(trash, ";");
2025
2026 chunk_appendf(trash, "%s", wl->s);
2027
William Lallemand944e6192018-11-21 15:48:31 +01002028 ret = readcfgfile(wl->s);
2029 if (ret == -1) {
2030 ha_alert("Could not open configuration file %s : %s\n",
2031 wl->s, strerror(errno));
2032 exit(1);
2033 }
2034 if (ret & (ERR_ABORT|ERR_FATAL))
2035 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
2036 err_code |= ret;
2037 if (err_code & ERR_ABORT)
2038 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01002039 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02002040
William Lallemand944e6192018-11-21 15:48:31 +01002041 /* do not try to resolve arguments nor to spot inconsistencies when
2042 * the configuration contains fatal errors caused by files not found
2043 * or failed memory allocations.
2044 */
2045 if (err_code & (ERR_ABORT|ERR_FATAL)) {
2046 ha_alert("Fatal errors found in configuration.\n");
2047 exit(1);
2048 }
William Lallemand7b302d82019-05-20 11:15:37 +02002049 if (trash->data)
2050 setenv("HAPROXY_CFGFILES", trash->area, 1);
2051
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02002052 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002053 if (global.mode & MODE_MWORKER) {
2054 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01002055 struct mworker_proc *tmproc;
2056
William Lallemand482f9a92019-04-12 16:15:00 +02002057 setenv("HAPROXY_MWORKER", "1", 1);
2058
William Lallemand16dd1b32018-11-19 18:46:18 +01002059 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
2060
William Lallemandf3a86832019-04-01 11:29:58 +02002061 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01002062 if (!tmproc) {
2063 ha_alert("Cannot allocate process structures.\n");
2064 exit(EXIT_FAILURE);
2065 }
William Lallemand8f7069a2019-04-12 16:09:23 +02002066 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01002067 tmproc->reloads = 0;
2068 tmproc->relative_pid = 0;
2069 tmproc->pid = pid;
2070 tmproc->timestamp = start_date.tv_sec;
2071 tmproc->ipc_fd[0] = -1;
2072 tmproc->ipc_fd[1] = -1;
2073
2074 proc_self = tmproc;
2075
2076 LIST_ADDQ(&proc_list, &tmproc->list);
2077 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002078
2079 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02002080
William Lallemandf3a86832019-04-01 11:29:58 +02002081 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02002082 if (!tmproc) {
2083 ha_alert("Cannot allocate process structures.\n");
2084 exit(EXIT_FAILURE);
2085 }
2086
William Lallemand8f7069a2019-04-12 16:09:23 +02002087 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02002088 tmproc->pid = -1;
2089 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01002090 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02002091 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01002092 tmproc->ipc_fd[0] = -1;
2093 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02002094
2095 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
2096 exit(EXIT_FAILURE);
2097 }
2098
2099 LIST_ADDQ(&proc_list, &tmproc->list);
2100 }
William Lallemand944e6192018-11-21 15:48:31 +01002101 }
2102 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
2103 struct wordlist *it, *c;
2104
William Lallemand1b663612018-10-26 14:47:33 +02002105 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02002106
William Lallemande7361152018-10-26 14:47:36 +02002107
William Lallemand550db6d2018-11-06 17:37:12 +01002108 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02002109
William Lallemand550db6d2018-11-06 17:37:12 +01002110 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02002111 ha_alert("Can't create the master's CLI.\n");
2112 exit(EXIT_FAILURE);
2113 }
William Lallemande7361152018-10-26 14:47:36 +02002114
William Lallemand550db6d2018-11-06 17:37:12 +01002115 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
2116
2117 if (mworker_cli_proxy_new_listener(c->s) < 0) {
2118 ha_alert("Can't create the master's CLI.\n");
2119 exit(EXIT_FAILURE);
2120 }
2121 LIST_DEL(&c->list);
2122 free(c->s);
2123 free(c);
2124 }
2125 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002126 }
2127
Willy Tarreaubb925012009-07-23 13:36:36 +02002128 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02002129 for (px = proxies_list; px; px = px->next) {
2130 struct server *srv;
2131 struct post_proxy_check_fct *ppcf;
2132 struct post_server_check_fct *pscf;
2133
2134 list_for_each_entry(pscf, &post_server_check_list, list) {
2135 for (srv = px->srv; srv; srv = srv->next)
2136 err_code |= pscf->fct(srv);
2137 }
2138 list_for_each_entry(ppcf, &post_proxy_check_list, list)
2139 err_code |= ppcf->fct(px);
2140 }
Willy Tarreaubb925012009-07-23 13:36:36 +02002141 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002142 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02002143 exit(1);
2144 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002145
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01002146 err_code |= pattern_finalize_config();
2147 if (err_code & (ERR_ABORT|ERR_FATAL)) {
2148 ha_alert("Failed to finalize pattern config.\n");
2149 exit(1);
2150 }
Willy Tarreau0f936722019-04-11 14:47:08 +02002151
Willy Tarreau70060452015-12-14 12:46:07 +01002152 /* recompute the amount of per-process memory depending on nbproc and
2153 * the shared SSL cache size (allowed to exist in all processes).
2154 */
2155 if (global.rlimit_memmax_all) {
2156#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
2157 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
2158
2159 global.rlimit_memmax =
2160 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
2161 ssl_cache_bytes) / global.nbproc +
2162 ssl_cache_bytes + 1048575LL) / 1048576LL;
2163#else
2164 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
2165#endif
2166 }
2167
Willy Tarreaue5733232019-05-22 19:24:06 +02002168#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002169 err_code |= netns_init();
2170 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002171 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002172 exit(1);
2173 }
2174#endif
2175
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002176 /* Apply server states */
2177 apply_server_state();
2178
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002179 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002180 srv_compute_all_admin_states(px);
2181
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002182 /* Apply servers' configured address */
2183 err_code |= srv_init_addr();
2184 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002185 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002186 exit(1);
2187 }
2188
Willy Tarreau3eb10b82020-04-15 16:42:39 +02002189 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
2190 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
2191 exit(1);
2192 }
2193
Willy Tarreaubaaee002006-06-26 02:48:02 +02002194 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002195 struct peers *pr;
2196 struct proxy *px;
2197
Willy Tarreaubebd2122020-04-15 16:06:11 +02002198 if (warned & WARN_ANY)
2199 qfprintf(stdout, "Warnings were found.\n");
2200
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002201 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002202 if (pr->peers_fe)
2203 break;
2204
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002205 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02002206 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002207 break;
2208
2209 if (pr || px) {
2210 /* At least one peer or one listener has been found */
2211 qfprintf(stdout, "Configuration file is valid\n");
2212 exit(0);
2213 }
2214 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2215 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002216 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002217
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002218 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002219 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002220
Willy Tarreaue6945732016-12-21 19:57:00 +01002221 list_for_each_entry(pcf, &post_check_list, list) {
2222 err_code |= pcf->fct();
2223 if (err_code & (ERR_ABORT|ERR_FATAL))
2224 exit(1);
2225 }
2226
Willy Tarreaubaaee002006-06-26 02:48:02 +02002227 if (cfg_maxconn > 0)
2228 global.maxconn = cfg_maxconn;
2229
Willy Tarreau8d687d82019-03-01 09:39:42 +01002230 if (global.stats_fe)
2231 global.maxsock += global.stats_fe->maxconn;
2232
2233 if (cfg_peers) {
2234 /* peers also need to bypass global maxconn */
2235 struct peers *p = cfg_peers;
2236
2237 for (p = cfg_peers; p; p = p->next)
2238 if (p->peers_fe)
2239 global.maxsock += p->peers_fe->maxconn;
2240 }
2241
Willy Tarreaubaaee002006-06-26 02:48:02 +02002242 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002243 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002244 global.pidfile = strdup(cfg_pidfile);
2245 }
2246
Willy Tarreaud0256482015-01-15 21:45:22 +01002247 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002248 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2249 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2250 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2251 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002252 *
2253 * If memmax is set, then it depends on which values are set. If
2254 * maxsslconn is set, we use memmax to determine how many cleartext
2255 * connections may be added, and set maxconn to the sum of the two.
2256 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2257 * the remaining amount of memory between memmax and the cleartext
2258 * connections. If neither are set, then it is considered that all
2259 * connections are SSL-capable, and maxconn is computed based on this,
2260 * then maxsslconn accordingly. We need to know if SSL is used on the
2261 * frontends, backends, or both, because when it's used on both sides,
2262 * we need twice the value for maxsslconn, but we only count the
2263 * handshake once since it is not performed on the two sides at the
2264 * same time (frontend-side is terminated before backend-side begins).
2265 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002266 * ssl_handshake_cost during its initialization. In any case, if
2267 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2268 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002269 */
Willy Tarreauac350932019-03-01 15:43:14 +01002270 ideal_maxconn = compute_ideal_maxconn();
2271
Willy Tarreaud0256482015-01-15 21:45:22 +01002272 if (!global.rlimit_memmax) {
2273 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002274 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002275 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2276 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2277 }
2278 }
2279#ifdef USE_OPENSSL
2280 else if (!global.maxconn && !global.maxsslconn &&
2281 (global.ssl_used_frontend || global.ssl_used_backend)) {
2282 /* memmax is set, compute everything automatically. Here we want
2283 * to ensure that all SSL connections will be served. We take
2284 * care of the number of sides where SSL is used, and consider
2285 * the worst case : SSL used on both sides and doing a handshake
2286 * simultaneously. Note that we can't have more than maxconn
2287 * handshakes at a time by definition, so for the worst case of
2288 * two SSL conns per connection, we count a single handshake.
2289 */
2290 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2291 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002292 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002293
2294 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2295 mem -= global.maxzlibmem;
2296 mem = mem * MEM_USABLE_RATIO;
2297
Willy Tarreau304e17e2020-03-10 17:54:54 +01002298 /* Principle: we test once to set maxconn according to the free
2299 * memory. If it results in values the system rejects, we try a
2300 * second time by respecting rlim_fd_max. If it fails again, we
2301 * go back to the initial value and will let the final code
2302 * dealing with rlimit report the error. That's up to 3 attempts.
2303 */
2304 do {
2305 global.maxconn = mem /
2306 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2307 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2308 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002309
Willy Tarreau304e17e2020-03-10 17:54:54 +01002310 if (retried == 1)
2311 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2312 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002313#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002314 if (global.maxconn > SYSTEM_MAXCONN)
2315 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002316#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002317 global.maxsslconn = sides * global.maxconn;
2318
2319 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2320 break;
2321 } while (retried++ < 2);
2322
Willy Tarreaud0256482015-01-15 21:45:22 +01002323 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2324 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2325 global.maxconn, global.maxsslconn);
2326 }
2327 else if (!global.maxsslconn &&
2328 (global.ssl_used_frontend || global.ssl_used_backend)) {
2329 /* memmax and maxconn are known, compute maxsslconn automatically.
2330 * maxsslconn being forced, we don't know how many of it will be
2331 * on each side if both sides are being used. The worst case is
2332 * when all connections use only one SSL instance because
2333 * handshakes may be on two sides at the same time.
2334 */
2335 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2336 int64_t mem = global.rlimit_memmax * 1048576ULL;
2337 int64_t sslmem;
2338
2339 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2340 mem -= global.maxzlibmem;
2341 mem = mem * MEM_USABLE_RATIO;
2342
Willy Tarreau87b09662015-04-03 00:22:06 +02002343 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002344 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2345 global.maxsslconn = round_2dig(global.maxsslconn);
2346
2347 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002348 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2349 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2350 "without SSL is %d, but %d was found and SSL is in use.\n",
2351 global.rlimit_memmax,
2352 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2353 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002354 exit(1);
2355 }
2356
2357 if (global.maxsslconn > sides * global.maxconn)
2358 global.maxsslconn = sides * global.maxconn;
2359
2360 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2361 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2362 }
2363#endif
2364 else if (!global.maxconn) {
2365 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2366 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2367 int64_t mem = global.rlimit_memmax * 1048576ULL;
2368 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002369 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002370
2371 if (global.ssl_used_frontend || global.ssl_used_backend)
2372 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2373
2374 mem -= global.maxzlibmem;
2375 mem = mem * MEM_USABLE_RATIO;
2376
2377 clearmem = mem;
2378 if (sides)
2379 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2380
Willy Tarreau304e17e2020-03-10 17:54:54 +01002381 /* Principle: we test once to set maxconn according to the free
2382 * memory. If it results in values the system rejects, we try a
2383 * second time by respecting rlim_fd_max. If it fails again, we
2384 * go back to the initial value and will let the final code
2385 * dealing with rlimit report the error. That's up to 3 attempts.
2386 */
2387 do {
2388 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2389 if (retried == 1)
2390 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2391 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002392#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002393 if (global.maxconn > SYSTEM_MAXCONN)
2394 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002395#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002396
Willy Tarreau304e17e2020-03-10 17:54:54 +01002397 if (clearmem <= 0 || !global.maxconn) {
2398 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2399 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2400 "is %d, but %d was found.\n",
2401 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002402 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002403 global.maxsslconn);
2404 exit(1);
2405 }
2406
2407 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2408 break;
2409 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002410
2411 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2412 if (sides && global.maxsslconn > sides * global.maxconn) {
2413 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2414 "to be limited to %d. Better reduce global.maxsslconn to get more "
2415 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2416 }
2417 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2418 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002419 }
2420
Willy Tarreaua409f302020-03-10 17:08:53 +01002421 global.maxsock = compute_ideal_maxsock(global.maxconn);
2422 global.hardmaxconn = global.maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002423
Olivier Houchard88698d92019-04-16 19:07:22 +02002424 /* update connection pool thresholds */
2425 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2426 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2427
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002428 proxy_adjust_all_maxconn();
2429
Willy Tarreau1db37712007-06-03 17:16:49 +02002430 if (global.tune.maxpollevents <= 0)
2431 global.tune.maxpollevents = MAX_POLL_EVENTS;
2432
Olivier Houchard1599b802018-05-24 18:59:04 +02002433 if (global.tune.runqueue_depth <= 0)
2434 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2435
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002436 if (global.tune.recv_enough == 0)
2437 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2438
Willy Tarreau27a674e2009-08-17 07:23:33 +02002439 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2440 global.tune.maxrewrite = global.tune.bufsize / 2;
2441
Willy Tarreaubaaee002006-06-26 02:48:02 +02002442 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2443 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002444 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002445 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2446 }
2447
William Lallemand095ba4c2017-06-01 17:38:50 +02002448 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002449 /* command line daemon mode inhibits foreground and debug modes mode */
2450 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002451 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002452 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002453
2454 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002455
William Lallemand095ba4c2017-06-01 17:38:50 +02002456 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002457 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002458 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002459 }
2460
William Lallemand095ba4c2017-06-01 17:38:50 +02002461 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002462 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002463 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 +02002464 global.nbproc = 1;
2465 }
2466
2467 if (global.nbproc < 1)
2468 global.nbproc = 1;
2469
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002470 if (global.nbthread < 1)
2471 global.nbthread = 1;
2472
Christopher Faulet3ef26392017-08-29 16:46:57 +02002473 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002474 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002475 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002476 exit(1);
2477 }
2478
Christopher Faulet96d44832017-11-14 22:02:30 +01002479 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002480 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002481 exit(1);
2482 }
2483
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002484 /*
2485 * Note: we could register external pollers here.
2486 * Built-in pollers have been registered before main().
2487 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002488
Willy Tarreau43b78992009-01-25 15:42:27 +01002489 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002490 disable_poller("kqueue");
2491
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002492 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2493 disable_poller("evports");
2494
Willy Tarreau43b78992009-01-25 15:42:27 +01002495 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002496 disable_poller("epoll");
2497
Willy Tarreau43b78992009-01-25 15:42:27 +01002498 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002499 disable_poller("poll");
2500
Willy Tarreau43b78992009-01-25 15:42:27 +01002501 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002502 disable_poller("select");
2503
2504 /* Note: we could disable any poller by name here */
2505
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002506 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002507 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002508 fprintf(stderr, "\n");
2509 list_filters(stderr);
2510 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002511
Willy Tarreau4f60f162007-04-08 16:39:58 +02002512 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002513 ha_alert("No polling mechanism available.\n"
2514 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2515 " is too low on this platform to support maxconn and the number of listeners\n"
2516 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2517 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2518 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2519 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2520 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2521 " check build settings using 'haproxy -vv'.\n\n",
2522 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002523 exit(1);
2524 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002525 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2526 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002527 }
2528
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002529 if (!global.node)
2530 global.node = strdup(hostname);
2531
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002532 if (!hlua_post_init())
2533 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002534
Maxime de Roucy0f503922016-05-13 23:52:55 +02002535 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002536}
2537
Simon Horman6fb82592011-07-15 13:14:11 +09002538static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002539{
Simon Hormanac821422011-07-15 13:14:09 +09002540 struct acl_term_suite *suite, *suiteb;
2541 struct acl_term *term, *termb;
2542
Simon Horman6fb82592011-07-15 13:14:11 +09002543 if (!cond)
2544 return;
2545
2546 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2547 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2548 LIST_DEL(&term->list);
2549 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002550 }
Simon Horman6fb82592011-07-15 13:14:11 +09002551 LIST_DEL(&suite->list);
2552 free(suite);
2553 }
2554
2555 free(cond);
2556}
2557
Christopher Fauletcb550132019-12-17 11:25:46 +01002558static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002559{
Christopher Fauletcb550132019-12-17 11:25:46 +01002560 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002561
Christopher Fauletcb550132019-12-17 11:25:46 +01002562 list_for_each_entry_safe(rule, ruleb, rules, list) {
2563 LIST_DEL(&rule->list);
2564 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002565 if (rule->release_ptr)
2566 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002567 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002568 }
2569}
2570
Simon Horman6fb82592011-07-15 13:14:11 +09002571static void deinit_stick_rules(struct list *rules)
2572{
2573 struct sticking_rule *rule, *ruleb;
2574
2575 list_for_each_entry_safe(rule, ruleb, rules, list) {
2576 LIST_DEL(&rule->list);
2577 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002578 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002579 free(rule);
2580 }
2581}
2582
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002583void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002584{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002585 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002586 struct cap_hdr *h,*h_next;
2587 struct server *s,*s_next;
2588 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002589 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002590 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002591 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002592 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002593 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002594 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002595 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002596 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002597 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002598 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002599 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002600 struct post_deinit_fct *pdf;
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002601 struct proxy_deinit_fct *pxdf;
2602 struct server_deinit_fct *srvdf;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002603
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002604 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002605 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002606 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002607 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002608 free(p->cookie_name);
2609 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002610 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002611 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002612 free(p->capture_name);
2613 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002614 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002615 if (p->conf.logformat_string != default_http_log_format &&
2616 p->conf.logformat_string != default_tcp_log_format &&
2617 p->conf.logformat_string != clf_http_log_format)
2618 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002619
Willy Tarreau62a61232013-04-12 18:13:46 +02002620 free(p->conf.lfs_file);
2621 free(p->conf.uniqueid_format_string);
2622 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002623 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2624 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002625
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002626 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2627 free(p->conf.logformat_sd_string);
2628 free(p->conf.lfsd_file);
2629
Willy Tarreaub80c2302007-11-30 20:51:32 +01002630 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2631 LIST_DEL(&cond->list);
2632 prune_acl_cond(cond);
2633 free(cond);
2634 }
2635
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002636 /* build a list of unique uri_auths */
2637 if (!ua)
2638 ua = p->uri_auth;
2639 else {
2640 /* check if p->uri_auth is unique */
2641 for (uap = ua; uap; uap=uap->next)
2642 if (uap == p->uri_auth)
2643 break;
2644
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002645 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002646 /* add it, if it is */
2647 p->uri_auth->next = ua;
2648 ua = p->uri_auth;
2649 }
2650 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002651
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002652 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2653 LIST_DEL(&acl->list);
2654 prune_acl(acl);
2655 free(acl);
2656 }
2657
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002658 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2659 LIST_DEL(&srule->list);
2660 prune_acl_cond(srule->cond);
2661 free(srule->cond);
2662 free(srule);
2663 }
2664
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002665 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2666 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002667 if (rule->cond) {
2668 prune_acl_cond(rule->cond);
2669 free(rule->cond);
2670 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002671 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002672 free(rule);
2673 }
2674
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002675 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2676 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002677 if (rdr->cond) {
2678 prune_acl_cond(rdr->cond);
2679 free(rdr->cond);
2680 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002681 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002682 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2683 LIST_DEL(&lf->list);
2684 free(lf);
2685 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002686 free(rdr);
2687 }
2688
William Lallemand0f99e342011-10-12 17:50:54 +02002689 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2690 LIST_DEL(&log->list);
2691 free(log);
2692 }
2693
William Lallemand723b73a2012-02-08 16:37:49 +01002694 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2695 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002696 release_sample_expr(lf->expr);
2697 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002698 free(lf);
2699 }
2700
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002701 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2702 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002703 release_sample_expr(lf->expr);
2704 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002705 free(lf);
2706 }
2707
Christopher Fauletcb550132019-12-17 11:25:46 +01002708 deinit_act_rules(&p->tcp_req.inspect_rules);
2709 deinit_act_rules(&p->tcp_rep.inspect_rules);
2710 deinit_act_rules(&p->tcp_req.l4_rules);
2711 deinit_act_rules(&p->tcp_req.l5_rules);
2712 deinit_act_rules(&p->http_req_rules);
2713 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002714 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002715
Simon Horman6fb82592011-07-15 13:14:11 +09002716 deinit_stick_rules(&p->storersp_rules);
2717 deinit_stick_rules(&p->sticking_rules);
2718
Willy Tarreaubaaee002006-06-26 02:48:02 +02002719 h = p->req_cap;
2720 while (h) {
2721 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002722 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002723 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002724 free(h);
2725 h = h_next;
2726 }/* end while(h) */
2727
2728 h = p->rsp_cap;
2729 while (h) {
2730 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002731 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002732 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002733 free(h);
2734 h = h_next;
2735 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002736
Willy Tarreaubaaee002006-06-26 02:48:02 +02002737 s = p->srv;
2738 while (s) {
2739 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002740
Dragan Dosen026ef572019-04-30 00:56:20 +02002741
Willy Tarreauf6562792019-05-07 19:05:35 +02002742 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002743
Willy Tarreaua534fea2008-08-03 12:19:50 +02002744 free(s->id);
2745 free(s->cookie);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002746 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002747 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002748 free(s->idle_conns);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002749 free(s->safe_conns);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002750 free(s->available_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002751 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002752
Christopher Fauletf61f33a2020-03-27 18:55:49 +01002753 if (s->use_ssl == 1 || s->check.use_ssl == 1 || (s->proxy->options & PR_O_TCPCHK_SSL)) {
Willy Tarreau17d45382016-12-22 21:16:08 +01002754 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2755 xprt_get(XPRT_SSL)->destroy_srv(s);
2756 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002757 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002758
2759 list_for_each_entry(srvdf, &server_deinit_list, list)
2760 srvdf->fct(s);
2761
Willy Tarreaubaaee002006-06-26 02:48:02 +02002762 free(s);
2763 s = s_next;
2764 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002765
Willy Tarreau4348fad2012-09-20 16:48:07 +02002766 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002767 /*
2768 * Zombie proxy, the listener just pretend to be up
2769 * because they still hold an opened fd.
2770 * Close it and give the listener its real state.
2771 */
2772 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2773 close(l->fd);
2774 l->state = LI_INIT;
2775 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002776 unbind_listener(l);
2777 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002778 LIST_DEL(&l->by_fe);
2779 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002780 free(l->name);
2781 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002782 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002783 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002784
Willy Tarreau4348fad2012-09-20 16:48:07 +02002785 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002786 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002787 if (bind_conf->xprt->destroy_bind_conf)
2788 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002789 free(bind_conf->file);
2790 free(bind_conf->arg);
2791 LIST_DEL(&bind_conf->by_fe);
2792 free(bind_conf);
2793 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002794
Christopher Fauletd7c91962015-04-30 11:48:27 +02002795 flt_deinit(p);
2796
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002797 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2798 pxdf->fct(p);
2799
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002800 free(p->desc);
2801 free(p->fwdfor_hdr_name);
2802
Olivier Houchard3f795f72019-04-17 22:51:06 +02002803 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002804
Willy Tarreaubafbe012017-11-24 17:34:44 +01002805 pool_destroy(p->req_cap_pool);
2806 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002807 if (p->table)
2808 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002809
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002810 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002811 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002812 HA_SPIN_DESTROY(&p0->lbprm.lock);
2813 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002814 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002815 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002816
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002817 while (ua) {
2818 uap = ua;
2819 ua = ua->next;
2820
Willy Tarreaua534fea2008-08-03 12:19:50 +02002821 free(uap->uri_prefix);
2822 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002823 free(uap->node);
2824 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002825
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002826 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002827 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002828
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002829 free(uap);
2830 }
2831
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002832 userlist_free(userlist);
2833
David Carlier834cb2e2015-09-25 12:02:25 +01002834 cfg_unregister_sections();
2835
Christopher Faulet0132d062017-07-26 15:33:35 +02002836 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002837
Willy Tarreaudd815982007-10-16 12:25:14 +02002838 protocol_unbind_all();
2839
Willy Tarreau05554e62016-12-21 20:46:26 +01002840 list_for_each_entry(pdf, &post_deinit_list, list)
2841 pdf->fct();
2842
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002843 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002844 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002845 free(global.chroot); global.chroot = NULL;
2846 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002847 free(global.node); global.node = NULL;
2848 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002849 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002850 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002851 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002852
William Lallemand0f99e342011-10-12 17:50:54 +02002853 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2854 LIST_DEL(&log->list);
2855 free(log);
2856 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002857 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002858 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002859 LIST_DEL(&wl->list);
2860 free(wl);
2861 }
2862
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002863 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2864 if (bol->must_free)
2865 free((void *)bol->str);
2866 LIST_DEL(&bol->list);
2867 free(bol);
2868 }
2869
Christopher Fauletff2613e2016-11-09 11:36:17 +01002870 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002871 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002872 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002873} /* end deinit() */
2874
William Lallemand72160322018-11-06 17:37:16 +01002875
Willy Tarreau918ff602011-07-25 16:33:49 +02002876/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002877void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002878{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002879 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002880
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002881 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002882 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002883 wake_expired_tasks();
2884
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002885 /* Process a few tasks */
2886 process_runnable_tasks();
2887
William Lallemand1aab50b2018-06-07 09:46:01 +02002888 /* check if we caught some signals and process them in the
2889 first thread */
2890 if (tid == 0)
2891 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002892
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002893 /* also stop if we failed to cleanly stop all tasks */
2894 if (killed > 1)
2895 break;
2896
Willy Tarreau10146c92015-04-13 20:44:19 +02002897 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002898 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002899 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002900 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002901 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002902 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002903 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002904 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2905 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002906 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002907 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002908 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002909 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002910 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002911 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002912
Willy Tarreau4f46a352020-03-23 09:27:28 +01002913 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002914 int i;
2915
2916 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002917 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2918 /* notify all threads that stopping was just set */
2919 for (i = 0; i < global.nbthread; i++)
2920 if ((all_threads_mask >> i) & 1)
2921 wake_thread(i);
2922 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002923 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002924
2925 /* stop when there's nothing left to do */
2926 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002927 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2928 /* wake all threads waiting on jobs==0 */
2929 for (i = 0; i < global.nbthread; i++)
2930 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2931 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002932 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002933 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002934 }
2935
Willy Tarreauc49ba522019-12-11 08:12:23 +01002936 /* If we have to sleep, measure how long */
2937 next = wake ? TICK_ETERNITY : next_timer_expiry();
2938
Willy Tarreau58b458d2008-06-29 22:40:23 +02002939 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002940 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002941
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002942 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002943 }
2944}
2945
Christopher Faulet1d17c102017-08-29 15:38:48 +02002946static void *run_thread_poll_loop(void *data)
2947{
Willy Tarreau082b6282019-05-22 14:42:12 +02002948 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002949 struct per_thread_init_fct *ptif;
2950 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002951 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002952 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002953 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2954 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002955
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002956 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002957 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002958
Willy Tarreauf6178242019-05-21 19:46:58 +02002959#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002960#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002961 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002962#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002963 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002964#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002965#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002966 /* Now, initialize one thread init at a time. This is better since
2967 * some init code is a bit tricky and may release global resources
2968 * after reallocating them locally. This will also ensure there is
2969 * no race on file descriptors allocation.
2970 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002971#ifdef USE_THREAD
2972 pthread_mutex_lock(&init_mutex);
2973#endif
2974 /* The first thread must set the number of threads left */
2975 if (!init_left)
2976 init_left = global.nbthread;
2977 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002978
Christopher Faulet1d17c102017-08-29 15:38:48 +02002979 tv_update_date(-1,-1);
2980
Willy Tarreau082b6282019-05-22 14:42:12 +02002981 /* per-thread alloc calls performed here are not allowed to snoop on
2982 * other threads, so they are free to initialize at their own rhythm
2983 * as long as they act as if they were alone. None of them may rely
2984 * on resources initialized by the other ones.
2985 */
2986 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2987 if (!ptaf->fct()) {
2988 ha_alert("failed to allocate resources for thread %u.\n", tid);
2989 exit(1);
2990 }
2991 }
2992
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002993 /* per-thread init calls performed here are not allowed to snoop on
2994 * other threads, so they are free to initialize at their own rhythm
2995 * as long as they act as if they were alone.
2996 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002997 list_for_each_entry(ptif, &per_thread_init_list, list) {
2998 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002999 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003000 exit(1);
3001 }
3002 }
3003
Willy Tarreau71092822019-06-10 09:51:04 +02003004 /* enabling protocols will result in fd_insert() calls to be performed,
3005 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02003006 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02003007 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02003008 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02003009 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02003010
Willy Tarreau34a150c2019-06-11 09:16:41 +02003011#ifdef USE_THREAD
3012 pthread_cond_broadcast(&init_cond);
3013 pthread_mutex_unlock(&init_mutex);
3014
3015 /* now wait for other threads to finish starting */
3016 pthread_mutex_lock(&init_mutex);
3017 while (init_left)
3018 pthread_cond_wait(&init_cond, &init_mutex);
3019 pthread_mutex_unlock(&init_mutex);
3020#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02003021
Willy Tarreaua45a8b52019-12-06 16:31:45 +01003022#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
3023 /* Let's refrain from using setuid executables. This way the impact of
3024 * an eventual vulnerability in a library remains limited. It may
3025 * impact external checks but who cares about them anyway ? In the
3026 * worst case it's possible to disable the option. Obviously we do this
3027 * in workers only. We can't hard-fail on this one as it really is
3028 * implementation dependent though we're interested in feedback, hence
3029 * the warning.
3030 */
3031 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
3032 static int warn_fail;
3033 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3034 ha_warning("Failed to disable setuid, please report to developers with detailed "
3035 "information about your operating system. You can silence this warning "
3036 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
3037 }
3038 }
3039#endif
3040
Willy Tarreaud96f1122019-12-03 07:07:36 +01003041#if defined(RLIMIT_NPROC)
3042 /* all threads have started, it's now time to prevent any new thread
3043 * or process from starting. Obviously we do this in workers only. We
3044 * can't hard-fail on this one as it really is implementation dependent
3045 * though we're interested in feedback, hence the warning.
3046 */
3047 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
3048 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
3049 static int warn_fail;
3050
3051 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3052 ha_warning("Failed to disable forks, please report to developers with detailed "
3053 "information about your operating system. You can silence this warning "
3054 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
3055 }
3056 }
3057#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003058 run_poll_loop();
3059
3060 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
3061 ptdf->fct();
3062
Willy Tarreau082b6282019-05-22 14:42:12 +02003063 list_for_each_entry(ptff, &per_thread_free_list, list)
3064 ptff->fct();
3065
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003066#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01003067 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003068 if (tid > 0)
3069 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003070#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003071 return NULL;
3072}
Christopher Faulet1d17c102017-08-29 15:38:48 +02003073
William Dauchyf9af9d72019-11-17 15:47:16 +01003074/* set uid/gid depending on global settings */
3075static void set_identity(const char *program_name)
3076{
3077 if (global.gid) {
3078 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
3079 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3080 " without 'uid'/'user' is generally useless.\n", program_name);
3081
3082 if (setgid(global.gid) == -1) {
3083 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
3084 protocol_unbind_all();
3085 exit(1);
3086 }
3087 }
3088
3089 if (global.uid && setuid(global.uid) == -1) {
3090 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
3091 protocol_unbind_all();
3092 exit(1);
3093 }
3094}
3095
Willy Tarreaubaaee002006-06-26 02:48:02 +02003096int main(int argc, char **argv)
3097{
3098 int err, retry;
3099 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02003100 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02003101 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003102
Olivier Houchard5fa300d2018-02-03 15:15:21 +01003103 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003104
Willy Tarreauff9c9142019-02-07 10:39:36 +01003105 /* this can only safely be done here, though it's optimized away by
3106 * the compiler.
3107 */
3108 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3109 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3110 "HAProxy was built with value %d, please fix it and rebuild.\n",
3111 LONGBITS, MAX_PROCS);
3112 exit(1);
3113 }
3114
Willy Tarreaubf696402019-03-01 10:09:28 +01003115 /* take a copy of initial limits before we possibly change them */
3116 getrlimit(RLIMIT_NOFILE, &limit);
3117 rlim_fd_cur_at_boot = limit.rlim_cur;
3118 rlim_fd_max_at_boot = limit.rlim_max;
3119
Willy Tarreau5794fb02018-11-25 18:43:29 +01003120 /* process all initcalls in order of potential dependency */
3121 RUN_INITCALLS(STG_PREPARE);
3122 RUN_INITCALLS(STG_LOCK);
3123 RUN_INITCALLS(STG_ALLOC);
3124 RUN_INITCALLS(STG_POOL);
3125 RUN_INITCALLS(STG_REGISTER);
3126 RUN_INITCALLS(STG_INIT);
3127
Emeric Bruncf20bf12010-10-22 16:06:11 +02003128 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003129 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3130 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3131 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003132 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003133
Willy Tarreaue437c442010-03-17 18:02:46 +01003134 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3135 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3136 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003137 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003138 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003139
Willy Tarreaudc23a922011-02-16 11:10:36 +01003140 /* ulimits */
3141 if (!global.rlimit_nofile)
3142 global.rlimit_nofile = global.maxsock;
3143
3144 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003145 limit.rlim_cur = global.rlimit_nofile;
3146 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3147
Willy Tarreaudc23a922011-02-16 11:10:36 +01003148 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003149 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003150 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3151 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3152 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3153 if (!(global.mode & MODE_MWORKER))
3154 exit(1);
3155 }
3156 else {
3157 /* try to set it to the max possible at least */
3158 limit.rlim_cur = limit.rlim_max;
3159 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3160 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003161
William Dauchy0fec3ab2019-10-27 20:08:11 +01003162 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d. "
3163 "This will fail in >= v2.3\n",
3164 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3165 global.rlimit_nofile = limit.rlim_cur;
3166 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003167 }
3168 }
3169
3170 if (global.rlimit_memmax) {
3171 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003172 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003173#ifdef RLIMIT_AS
3174 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003175 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3176 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3177 argv[0], global.rlimit_memmax);
3178 if (!(global.mode & MODE_MWORKER))
3179 exit(1);
3180 }
3181 else
3182 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs."
3183 "This will fail in >= v2.3\n",
3184 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003185 }
3186#else
3187 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003188 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3189 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3190 argv[0], global.rlimit_memmax);
3191 if (!(global.mode & MODE_MWORKER))
3192 exit(1);
3193 }
3194 else
3195 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.",
3196 "This will fail in >= v2.3\n",
3197 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003198 }
3199#endif
3200 }
3201
Olivier Houchardf73629d2017-04-05 22:33:04 +02003202 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003203 if (strcmp("/dev/null", old_unixsocket) != 0) {
3204 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003205 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003206 if (!(global.mode & MODE_MWORKER))
3207 exit(1);
3208 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003209 }
3210 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003211 get_cur_unixsocket();
3212
Willy Tarreaubaaee002006-06-26 02:48:02 +02003213 /* We will loop at most 100 times with 10 ms delay each time.
3214 * That's at most 1 second. We only send a signal to old pids
3215 * if we cannot grab at least one port.
3216 */
3217 retry = MAX_START_RETRIES;
3218 err = ERR_NONE;
3219 while (retry >= 0) {
3220 struct timeval w;
3221 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003222 /* exit the loop on no error or fatal error */
3223 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003224 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003225 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003226 break;
3227
3228 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3229 * listening sockets. So on those platforms, it would be wiser to
3230 * simply send SIGUSR1, which will not be undoable.
3231 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003232 if (tell_old_pids(SIGTTOU) == 0) {
3233 /* no need to wait if we can't contact old pids */
3234 retry = 0;
3235 continue;
3236 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003237 /* give some time to old processes to stop listening */
3238 w.tv_sec = 0;
3239 w.tv_usec = 10*1000;
3240 select(0, NULL, NULL, NULL, &w);
3241 retry--;
3242 }
3243
3244 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003245 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02003246 if (retry != MAX_START_RETRIES && nb_oldpids) {
3247 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003248 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003249 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003250 exit(1);
3251 }
3252
William Lallemand944e6192018-11-21 15:48:31 +01003253 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003254 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003255 /* Note: we don't have to send anything to the old pids because we
3256 * never stopped them. */
3257 exit(1);
3258 }
3259
Emeric Bruncf20bf12010-10-22 16:06:11 +02003260 err = protocol_bind_all(errmsg, sizeof(errmsg));
3261 if ((err & ~ERR_WARN) != ERR_NONE) {
3262 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01003263 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02003264
Christopher Faulet767a84b2017-11-24 16:50:31 +01003265 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003266 protocol_unbind_all(); /* cleanup everything we can */
3267 if (nb_oldpids)
3268 tell_old_pids(SIGTTIN);
3269 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02003270 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003271 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02003272 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003273 /* Ok, all listener should now be bound, close any leftover sockets
3274 * the previous process gave us, we don't need them anymore
3275 */
3276 while (xfer_sock_list != NULL) {
3277 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3278 close(xfer_sock_list->fd);
3279 free(xfer_sock_list->iface);
3280 free(xfer_sock_list->namespace);
3281 free(xfer_sock_list);
3282 xfer_sock_list = tmpxfer;
3283 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003284
Willy Tarreaubaaee002006-06-26 02:48:02 +02003285 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003286 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3287 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003288
Willy Tarreaubaaee002006-06-26 02:48:02 +02003289 /* MODE_QUIET can inhibit alerts and warnings below this line */
3290
PiBa-NL149a81a2017-12-25 21:03:31 +01003291 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3292 /* either stdin/out/err are already closed or should stay as they are. */
3293 if ((global.mode & MODE_DAEMON)) {
3294 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3295 global.mode &= ~MODE_VERBOSE;
3296 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3297 }
3298 } else {
3299 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3300 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003301 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003302 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003303 }
3304
3305 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003306 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003307 unlink(global.pidfile);
3308 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3309 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003310 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003311 if (nb_oldpids)
3312 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003313 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003314 exit(1);
3315 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003316 }
3317
Willy Tarreaub38651a2007-03-24 17:24:39 +01003318 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003319 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3320 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003321 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003322 exit(1);
3323 }
3324
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003325 /* If the user is not root, we'll still let him try the configuration
3326 * but we inform him that unexpected behaviour may occur.
3327 */
3328 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003329 ha_warning("[%s.main()] Some options which require full privileges"
3330 " might not work well.\n"
3331 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003332
William Lallemand095ba4c2017-06-01 17:38:50 +02003333 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3334
3335 /* chroot if needed */
3336 if (global.chroot != NULL) {
3337 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003338 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003339 if (nb_oldpids)
3340 tell_old_pids(SIGTTIN);
3341 protocol_unbind_all();
3342 exit(1);
3343 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003344 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003345 }
3346
William Lallemand944e6192018-11-21 15:48:31 +01003347 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003348 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003349
William Lallemand27edc4b2019-05-07 17:49:33 +02003350 /* send a SIGTERM to workers who have a too high reloads number */
3351 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3352 mworker_kill_max_reloads(SIGTERM);
3353
William Lallemand8a361b52017-06-20 11:20:33 +02003354 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3355 nb_oldpids = 0;
3356 free(oldpids);
3357 oldpids = NULL;
3358 }
3359
3360
Willy Tarreaubaaee002006-06-26 02:48:02 +02003361 /* Note that any error at this stage will be fatal because we will not
3362 * be able to restart the old pids.
3363 */
3364
William Dauchyf9af9d72019-11-17 15:47:16 +01003365 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3366 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003367
Willy Tarreaubaaee002006-06-26 02:48:02 +02003368 /* check ulimits */
3369 limit.rlim_cur = limit.rlim_max = 0;
3370 getrlimit(RLIMIT_NOFILE, &limit);
3371 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003372 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3373 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3374 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3375 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3376 global.maxsock);
3377 if (!(global.mode & MODE_MWORKER))
3378 exit(1);
3379 }
3380 else
3381 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3382 "Please raise 'ulimit-n' to %d or more to avoid any trouble."
3383 "This will fail in >= v2.3\n",
3384 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3385 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003386 }
3387
William Lallemand944e6192018-11-21 15:48:31 +01003388 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003389 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003390 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003391 int ret = 0;
3392 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003393 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003394
William Lallemand095ba4c2017-06-01 17:38:50 +02003395 /*
3396 * if daemon + mworker: must fork here to let a master
3397 * process live in background before forking children
3398 */
William Lallemand73b85e72017-06-01 17:38:51 +02003399
3400 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3401 && (global.mode & MODE_MWORKER)
3402 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003403 ret = fork();
3404 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003405 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003406 protocol_unbind_all();
3407 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003408 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003409 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003410 } else /* change the process group ID in the child (master process) */
3411 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003412 }
William Lallemande20b6a62017-06-01 17:38:55 +02003413
William Lallemande20b6a62017-06-01 17:38:55 +02003414
William Lallemanddeed7802017-11-06 11:00:04 +01003415 /* if in master-worker mode, write the PID of the father */
3416 if (global.mode & MODE_MWORKER) {
3417 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003418 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003419 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003420 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003421 }
3422
Willy Tarreaubaaee002006-06-26 02:48:02 +02003423 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003424 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003425 if (global.mode & MODE_MWORKER)
3426 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003427 for (proc = 0; proc < global.nbproc; proc++) {
3428 ret = fork();
3429 if (ret < 0) {
3430 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3431 protocol_unbind_all();
3432 exit(1); /* there has been an error */
3433 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003434 else if (ret == 0) { /* child breaks here */
3435 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003436 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003437 }
William Lallemand944e6192018-11-21 15:48:31 +01003438 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3439 char pidstr[100];
3440 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003441 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003442 }
3443 if (global.mode & MODE_MWORKER) {
3444 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003445
William Lallemand220567e2018-11-21 18:04:53 +01003446 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003447 /* find the right mworker_proc */
3448 list_for_each_entry(child, &proc_list, list) {
3449 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003450 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003451 child->timestamp = now.tv_sec;
3452 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003453 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003454 break;
3455 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003456 }
3457 }
William Lallemandbc193052018-09-11 10:06:26 +02003458
William Lallemand944e6192018-11-21 15:48:31 +01003459 relative_pid++; /* each child will get a different one */
3460 pid_bit <<= 1;
3461 }
3462 } else {
3463 /* wait mode */
3464 global.nbproc = 1;
3465 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003466 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003467
3468#ifdef USE_CPU_AFFINITY
3469 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003470 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003471 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003472#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003473 {
3474 cpuset_t cpuset;
3475 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003476 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003477
3478 CPU_ZERO(&cpuset);
3479 while ((i = ffsl(cpu_map)) > 0) {
3480 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003481 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003482 }
3483 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3484 }
David Carlier5e4c8e22019-09-13 05:12:58 +01003485#elif defined(__linux__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003486 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003487#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003488#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003489 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003490 if (pidfd >= 0) {
3491 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3492 close(pidfd);
3493 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003494
3495 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003496 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003497
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003498 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003499 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003500
3501 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3502 (global.mode & MODE_DAEMON)) {
3503 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003504 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3505 stdio_quiet(-1);
3506
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003507 global.mode &= ~MODE_VERBOSE;
3508 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003509 }
3510
William Lallemandb3f2be32018-09-11 10:06:18 +02003511 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003512 /* should never get there */
3513 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003514 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003515#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003516 ssl_free_dh();
3517#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003518 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003519 }
3520
William Lallemandcb11fd22017-06-01 17:38:52 +02003521 /* child must never use the atexit function */
3522 atexit_flag = 0;
3523
William Lallemandbc193052018-09-11 10:06:26 +02003524 /* close useless master sockets */
3525 if (global.mode & MODE_MWORKER) {
3526 struct mworker_proc *child, *it;
3527 master = 0;
3528
William Lallemand309dc9a2018-10-26 14:47:45 +02003529 mworker_cli_proxy_stop();
3530
William Lallemandbc193052018-09-11 10:06:26 +02003531 /* free proc struct of other processes */
3532 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003533 /* close the FD of the master side for all
3534 * workers, we don't need to close the worker
3535 * side of other workers since it's done with
3536 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003537 if (child->ipc_fd[0] >= 0)
3538 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003539 if (child->relative_pid == relative_pid &&
3540 child->reloads == 0) {
3541 /* keep this struct if this is our pid */
3542 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003543 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003544 }
William Lallemandbc193052018-09-11 10:06:26 +02003545 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003546 mworker_free_child(child);
3547 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003548 }
3549 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003550
William Lallemande1340412017-12-28 16:09:36 +01003551 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3552 devnullfd = open("/dev/null", O_RDWR, 0);
3553 if (devnullfd < 0) {
3554 ha_alert("Cannot open /dev/null\n");
3555 exit(EXIT_FAILURE);
3556 }
3557 }
3558
William Lallemand095ba4c2017-06-01 17:38:50 +02003559 /* Must chroot and setgid/setuid in the children */
3560 /* chroot if needed */
3561 if (global.chroot != NULL) {
3562 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003563 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003564 if (nb_oldpids)
3565 tell_old_pids(SIGTTIN);
3566 protocol_unbind_all();
3567 exit(1);
3568 }
3569 }
3570
3571 free(global.chroot);
3572 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003573 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003574
William Lallemand7f80eb22017-05-26 18:19:55 +02003575 /* pass through every cli socket, and check if it's bound to
3576 * the current process and if it exposes listeners sockets.
3577 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3578 * */
3579
3580 if (global.stats_fe) {
3581 struct bind_conf *bind_conf;
3582
3583 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3584 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3585 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3586 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3587 break;
3588 }
3589 }
3590 }
3591 }
3592
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003593 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003594 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003595 while (px != NULL) {
3596 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003597 if (!(px->bind_proc & (1UL << proc))) {
3598 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3599 zombify_proxy(px);
3600 else
3601 stop_proxy(px);
3602 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003603 }
3604 px = px->next;
3605 }
3606
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003607 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003608 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003609 if (!curpeers->peers_fe)
3610 continue;
3611
3612 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3613 continue;
3614
3615 stop_proxy(curpeers->peers_fe);
3616 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003617 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003618 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003619 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003620 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003621 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003622 curpeers->peers_fe = NULL;
3623 }
3624
William Lallemand2e8fad92018-11-13 16:18:23 +01003625 /*
3626 * This is only done in daemon mode because we might want the
3627 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3628 * we should now close the 3 first FDs to ensure that we can
3629 * detach from the TTY. We MUST NOT do it in other cases since
3630 * it would have already be done, and 0-2 would have been
3631 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003632 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003633 if ((global.mode & MODE_DAEMON) &&
3634 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003635 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003636 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003637 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003638 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3639 }
3640 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003641 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3642 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003643 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003644 }
3645
William Dauchye039f262019-11-17 15:47:15 +01003646 /* try our best to re-enable core dumps depending on system capabilities.
3647 * What is addressed here :
3648 * - remove file size limits
3649 * - remove core size limits
3650 * - mark the process dumpable again if it lost it due to user/group
3651 */
3652 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3653 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3654
3655#if defined(RLIMIT_FSIZE)
3656 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3657 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3658 ha_alert("[%s.main()] Failed to set the raise the maximum "
3659 "file size.\n", argv[0]);
3660 if (!(global.mode & MODE_MWORKER))
3661 exit(1);
3662 }
3663 else
3664 ha_warning("[%s.main()] Failed to set the raise the maximum "
3665 "file size. This will fail in >= v2.3\n", argv[0]);
3666 }
3667#endif
3668
3669#if defined(RLIMIT_CORE)
3670 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3671 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3672 ha_alert("[%s.main()] Failed to set the raise the core "
3673 "dump size.\n", argv[0]);
3674 if (!(global.mode & MODE_MWORKER))
3675 exit(1);
3676 }
3677 else
3678 ha_warning("[%s.main()] Failed to set the raise the core "
3679 "dump size. This will fail in >= v2.3\n", argv[0]);
3680 }
3681#endif
3682
3683#if defined(USE_PRCTL)
3684 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3685 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3686 "no core will be dumped.\n", argv[0]);
3687#endif
3688 }
3689
Christopher Faulete3a5e352017-10-24 13:53:54 +02003690 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003691 /*
3692 * That's it : the central polling loop. Run until we stop.
3693 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003694#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003695 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003696 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003697 int i;
3698
William Lallemand1aab50b2018-06-07 09:46:01 +02003699 /* ensure the signals will be blocked in every thread */
3700 sigfillset(&blocked_sig);
3701 sigdelset(&blocked_sig, SIGPROF);
3702 sigdelset(&blocked_sig, SIGBUS);
3703 sigdelset(&blocked_sig, SIGFPE);
3704 sigdelset(&blocked_sig, SIGILL);
3705 sigdelset(&blocked_sig, SIGSEGV);
3706 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3707
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003708 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003709 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003710 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003711 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003712
Christopher Faulet62519022017-10-16 15:49:32 +02003713#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003714 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003715 if (global.cpu_map.proc_t1[relative_pid-1])
3716 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3717
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003718 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003719 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003720 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003721
Willy Tarreau421f02e2018-01-20 18:19:22 +01003722 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003723 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003724#if defined(__APPLE__)
3725 int j;
3726 unsigned long cpu_map = global.cpu_map.thread[i];
3727
3728 while ((j = ffsl(cpu_map)) > 0) {
3729 thread_affinity_policy_data_t cpu_set = { j - 1 };
3730 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3731 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3732 cpu_map &= ~(1UL << (j - 1));
3733 }
3734#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003735#if defined(__FreeBSD__) || defined(__NetBSD__)
3736 cpuset_t cpuset;
3737#else
3738 cpu_set_t cpuset;
3739#endif
3740 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003741 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003742
3743 CPU_ZERO(&cpuset);
3744
3745 while ((j = ffsl(cpu_map)) > 0) {
3746 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003747 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003748 }
David Carliera92c5ce2019-09-13 05:03:12 +01003749 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003750 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003751#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003752 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003753 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003754#endif /* !USE_CPU_AFFINITY */
3755
William Lallemand1aab50b2018-06-07 09:46:01 +02003756 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003757 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003758
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003759 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003760 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003761
3762 /* Wait the end of other threads */
3763 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003764 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003765
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003766#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3767 show_lock_stats();
3768#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003769 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003770#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003771 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003772 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003773#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003774
3775 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003776 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003777
Willy Tarreaubaaee002006-06-26 02:48:02 +02003778 exit(0);
3779}
3780
Willy Tarreaubb1b63c2020-04-15 17:00:03 +02003781#if defined(__clang_version__)
3782REGISTER_BUILD_OPTS("Built with clang compiler version " __clang_version__);
3783#elif defined(__VERSION__)
3784REGISTER_BUILD_OPTS("Built with gcc compiler version " __VERSION__);
3785#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003786
3787/*
3788 * Local variables:
3789 * c-indent-level: 8
3790 * c-basic-offset: 8
3791 * End:
3792 */