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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 Tarreau6c3a6812020-03-06 18:57:15 +010081#include <import/sha1.h>
82
Willy Tarreaub2551052020-06-09 09:07:15 +020083#include <haproxy/acl.h>
84#include <haproxy/activity.h>
85#include <haproxy/api.h>
86#include <haproxy/arg.h>
87#include <haproxy/auth.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020088#include <haproxy/base64.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020089#include <haproxy/capture-t.h>
Willy Tarreau6be78492020-06-05 00:00:29 +020090#include <haproxy/cfgparse.h>
Willy Tarreauc13ed532020-06-02 10:22:45 +020091#include <haproxy/chunk.h>
Willy Tarreau83487a82020-06-04 20:19:54 +020092#include <haproxy/cli.h>
Willy Tarreau7ea393d2020-06-04 18:02:10 +020093#include <haproxy/connection.h>
Willy Tarreaueb92deb2020-06-04 10:53:16 +020094#include <haproxy/dns.h>
Willy Tarreau2741c8c2020-06-02 11:28:02 +020095#include <haproxy/dynbuf.h>
Willy Tarreau8d366972020-05-27 16:10:29 +020096#include <haproxy/errors.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020097#include <haproxy/fd.h>
Willy Tarreauc7babd82020-06-04 21:29:29 +020098#include <haproxy/filters.h>
Willy Tarreaub2551052020-06-09 09:07:15 +020099#include <haproxy/global.h>
Willy Tarreau86416052020-06-04 09:20:54 +0200100#include <haproxy/hlua.h>
Willy Tarreauc761f842020-06-04 11:40:28 +0200101#include <haproxy/http_rules.h>
Willy Tarreau853b2972020-05-27 18:01:47 +0200102#include <haproxy/list.h>
Willy Tarreau213e9902020-06-04 14:58:24 +0200103#include <haproxy/listener.h>
Willy Tarreauaeed4a82020-06-04 22:01:04 +0200104#include <haproxy/log.h>
Willy Tarreaub5abe5b2020-06-04 14:07:37 +0200105#include <haproxy/mworker.h>
Willy Tarreau7a00efb2020-06-02 17:02:59 +0200106#include <haproxy/namespace.h>
Willy Tarreau6131d6a2020-06-02 16:48:09 +0200107#include <haproxy/net_helper.h>
Willy Tarreau6019fab2020-05-27 16:26:00 +0200108#include <haproxy/openssl-compat.h>
Willy Tarreau225a90a2020-06-04 15:06:28 +0200109#include <haproxy/pattern.h>
Willy Tarreau3c2a7c22020-06-04 18:38:21 +0200110#include <haproxy/peers.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200111#include <haproxy/pool.h>
112#include <haproxy/protocol.h>
Willy Tarreaua264d962020-06-04 22:29:18 +0200113#include <haproxy/proxy.h>
Willy Tarreau7cd8b6e2020-06-02 17:32:26 +0200114#include <haproxy/regex.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200115#include <haproxy/sample.h>
Willy Tarreau1e56f922020-06-04 23:20:13 +0200116#include <haproxy/server.h>
Willy Tarreau48d25b32020-06-04 18:58:52 +0200117#include <haproxy/session.h>
Willy Tarreau3727a8a2020-06-04 17:37:26 +0200118#include <haproxy/signal.h>
Willy Tarreau209108d2020-06-04 20:30:20 +0200119#include <haproxy/ssl_sock.h>
Willy Tarreaudfd3de82020-06-04 23:46:14 +0200120#include <haproxy/stream.h>
Willy Tarreaucea0e1b2020-06-04 17:25:40 +0200121#include <haproxy/task.h>
Willy Tarreau3f567e42020-05-28 15:29:19 +0200122#include <haproxy/thread.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200123#include <haproxy/time.h>
124#include <haproxy/tools.h>
125#include <haproxy/uri_auth-t.h>
Willy Tarreaua1718922020-06-04 16:25:31 +0200126#include <haproxy/vars.h>
Willy Tarreaub2551052020-06-09 09:07:15 +0200127#include <haproxy/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200128
Willy Tarreaubaaee002006-06-26 02:48:02 +0200129
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100130/* array of init calls for older platforms */
131DECLARE_INIT_STAGES;
132
Willy Tarreau477ecd82010-01-03 21:12:30 +0100133/* list of config files */
134static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200135int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100136int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100137unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100138unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200139
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100140volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
Willy Tarreau4b3f27b2020-03-12 17:28:01 +0100141volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
Willy Tarreauf8ea00e2020-03-12 17:24:53 +0100142
Willy Tarreaubaaee002006-06-26 02:48:02 +0200143/* global options */
144struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100145 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100146 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100147 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200148 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200149 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100150 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100151 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100152 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200153 .unix_bind = {
154 .ux = {
155 .uid = -1,
156 .gid = -1,
157 .mode = 0,
158 }
159 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200160 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100161 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100162 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Christopher Faulet546c4692020-01-22 14:31:21 +0100163 .maxrewrite = MAXREWRITE,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100164 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100165 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200166 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200167 .pool_low_ratio = 20,
168 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200169 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200170#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100171 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200172#endif
William Lallemandf3747832012-11-09 12:33:10 +0100173 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100174#ifdef DEFAULT_IDLE_TIMER
175 .idle_timer = DEFAULT_IDLE_TIMER,
176#else
177 .idle_timer = 1000, /* 1 second */
178#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200179 },
Emeric Brun76d88952012-10-05 15:47:31 +0200180#ifdef USE_OPENSSL
181#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200182 .maxsslconn = DEFAULT_MAXSSLCONN,
183#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200184#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200185 /* others NULL OK */
186};
187
188/*********************************************************************/
189
190int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100191int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200192int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100193int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100194int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100195int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200196
197/* Here we store informations about the pids of the processes we may pause
198 * or kill. We will send them a signal every 10 ms until we can bind to all
199 * our ports. With 200 retries, that's about 2 seconds.
200 */
201#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200202static int *oldpids = NULL;
203static int oldpids_sig; /* use USR1 or TERM */
204
Olivier Houchardf73629d2017-04-05 22:33:04 +0200205/* Path to the unix socket we use to retrieve listener sockets from the old process */
206static const char *old_unixsocket;
207
William Lallemand85b0bd92017-06-01 17:38:53 +0200208static char *cur_unixsocket = NULL;
209
William Lallemandcb11fd22017-06-01 17:38:52 +0200210int atexit_flag = 0;
211
Willy Tarreaubb545b42010-08-25 12:58:59 +0200212int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200213const int zero = 0;
214const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200215const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200216
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100217char hostname[MAX_HOSTNAME_LEN];
Dragan Dosen4f014152020-06-18 16:56:47 +0200218char *localpeer = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200219
William Lallemand00417412020-06-05 14:08:41 +0200220static char **old_argv = NULL; /* previous argv but cleaned up */
William Lallemand73b85e72017-06-01 17:38:51 +0200221
William Lallemandbc193052018-09-11 10:06:26 +0200222struct list proc_list = LIST_HEAD_INIT(proc_list);
223
224int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100225unsigned int rlim_fd_cur_at_boot = 0;
226unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200227
Willy Tarreau6c3a6812020-03-06 18:57:15 +0100228/* per-boot randomness */
229unsigned char boot_seed[20]; /* per-boot random seed (160 bits initially) */
230
William Lallemand16dd1b32018-11-19 18:46:18 +0100231struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200232
William Lallemandb3f2be32018-09-11 10:06:18 +0200233static void *run_thread_poll_loop(void *data);
234
Willy Tarreauff055502014-04-28 22:27:06 +0200235/* bitfield of a few warnings to emit just once (WARN_*) */
236unsigned int warned = 0;
237
William Lallemande7361152018-10-26 14:47:36 +0200238/* master CLI configuration (-S flag) */
239struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100240
241/* These are strings to be reported in the output of "haproxy -vv". They may
242 * either be constants (in which case must_free must be zero) or dynamically
243 * allocated strings to pass to free() on exit, and in this case must_free
244 * must be non-zero.
245 */
246struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
247struct build_opts_str {
248 struct list list;
249 const char *str;
250 int must_free;
251};
252
Willy Tarreaue6945732016-12-21 19:57:00 +0100253/* These functions are called just after the point where the program exits
254 * after a config validity check, so they are generally suited for resource
255 * allocation and slow initializations that should be skipped during basic
256 * config checks. The functions must return 0 on success, or a combination
257 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
258 * and immediate exit, so the function must have emitted any useful error.
259 */
260struct list post_check_list = LIST_HEAD_INIT(post_check_list);
261struct post_check_fct {
262 struct list list;
263 int (*fct)();
264};
265
Christopher Fauletc1692962019-08-12 09:51:07 +0200266/* These functions are called for each proxy just after the config validity
267 * check. The functions must return 0 on success, or a combination of ERR_*
268 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
269 * exit, so the function must have emitted any useful error.
270 */
271struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
272struct post_proxy_check_fct {
273 struct list list;
274 int (*fct)(struct proxy *);
275};
276
277/* These functions are called for each server just after the config validity
278 * check. The functions must return 0 on success, or a combination of ERR_*
279 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
280 * exit, so the function must have emitted any useful error.
281 */
282struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
283struct post_server_check_fct {
284 struct list list;
285 int (*fct)(struct server *);
286};
287
Willy Tarreau082b6282019-05-22 14:42:12 +0200288/* These functions are called for each thread just after the thread creation
289 * and before running the init functions. They should be used to do per-thread
290 * (re-)allocations that are needed by subsequent functoins. They must return 0
291 * if an error occurred. */
292struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
293struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100294 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200295 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100296};
297
Christopher Faulet415f6112017-07-25 16:52:58 +0200298/* These functions are called for each thread just after the thread creation
299 * and before running the scheduler. They should be used to do per-thread
300 * initializations. They must return 0 if an error occurred. */
301struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
302struct per_thread_init_fct {
303 struct list list;
304 int (*fct)();
305};
306
Willy Tarreau082b6282019-05-22 14:42:12 +0200307/* These functions are called when freeing the global sections at the end of
308 * deinit, after everything is stopped. They don't return anything. They should
309 * not release shared resources that are possibly used by other deinit
310 * functions, only close/release what is private. Use the per_thread_free_list
311 * to release shared resources.
312 */
313struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
314struct post_deinit_fct {
315 struct list list;
316 void (*fct)();
317};
318
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200319/* These functions are called when freeing a proxy during the deinit, after
320 * everything isg stopped. They don't return anything. They should not release
321 * the proxy itself or any shared resources that are possibly used by other
322 * deinit functions, only close/release what is private.
323 */
324struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
325struct proxy_deinit_fct {
326 struct list list;
327 void (*fct)(struct proxy *);
328};
329
330/* These functions are called when freeing a server during the deinit, after
331 * everything isg stopped. They don't return anything. They should not release
332 * the proxy itself or any shared resources that are possibly used by other
333 * deinit functions, only close/release what is private.
334 */
335struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
336struct server_deinit_fct {
337 struct list list;
338 void (*fct)(struct server *);
339};
340
Willy Tarreau082b6282019-05-22 14:42:12 +0200341/* These functions are called when freeing the global sections at the end of
342 * deinit, after the thread deinit functions, to release unneeded memory
343 * allocations. They don't return anything, and they work in best effort mode
344 * as their sole goal is to make valgrind mostly happy.
345 */
346struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
347struct per_thread_free_fct {
348 struct list list;
349 int (*fct)();
350};
351
Christopher Faulet415f6112017-07-25 16:52:58 +0200352/* These functions are called for each thread just after the scheduler loop and
353 * before exiting the thread. They don't return anything and, as for post-deinit
354 * functions, they work in best effort mode as their sole goal is to make
355 * valgrind mostly happy. */
356struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
357struct per_thread_deinit_fct {
358 struct list list;
359 void (*fct)();
360};
361
Willy Tarreaubaaee002006-06-26 02:48:02 +0200362/*********************************************************************/
363/* general purpose functions ***************************************/
364/*********************************************************************/
365
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100366/* used to register some build option strings at boot. Set must_free to
367 * non-zero if the string must be freed upon exit.
368 */
369void hap_register_build_opts(const char *str, int must_free)
370{
371 struct build_opts_str *b;
372
373 b = calloc(1, sizeof(*b));
374 if (!b) {
375 fprintf(stderr, "out of memory\n");
376 exit(1);
377 }
378 b->str = str;
379 b->must_free = must_free;
380 LIST_ADDQ(&build_opts_list, &b->list);
381}
382
Willy Tarreaue6945732016-12-21 19:57:00 +0100383/* used to register some initialization functions to call after the checks. */
384void hap_register_post_check(int (*fct)())
385{
386 struct post_check_fct *b;
387
388 b = calloc(1, sizeof(*b));
389 if (!b) {
390 fprintf(stderr, "out of memory\n");
391 exit(1);
392 }
393 b->fct = fct;
394 LIST_ADDQ(&post_check_list, &b->list);
395}
396
Christopher Fauletc1692962019-08-12 09:51:07 +0200397/* used to register some initialization functions to call for each proxy after
398 * the checks.
399 */
400void hap_register_post_proxy_check(int (*fct)(struct proxy *))
401{
402 struct post_proxy_check_fct *b;
403
404 b = calloc(1, sizeof(*b));
405 if (!b) {
406 fprintf(stderr, "out of memory\n");
407 exit(1);
408 }
409 b->fct = fct;
410 LIST_ADDQ(&post_proxy_check_list, &b->list);
411}
412
413/* used to register some initialization functions to call for each server after
414 * the checks.
415 */
416void hap_register_post_server_check(int (*fct)(struct server *))
417{
418 struct post_server_check_fct *b;
419
420 b = calloc(1, sizeof(*b));
421 if (!b) {
422 fprintf(stderr, "out of memory\n");
423 exit(1);
424 }
425 b->fct = fct;
426 LIST_ADDQ(&post_server_check_list, &b->list);
427}
428
Willy Tarreau05554e62016-12-21 20:46:26 +0100429/* used to register some de-initialization functions to call after everything
430 * has stopped.
431 */
432void hap_register_post_deinit(void (*fct)())
433{
434 struct post_deinit_fct *b;
435
436 b = calloc(1, sizeof(*b));
437 if (!b) {
438 fprintf(stderr, "out of memory\n");
439 exit(1);
440 }
441 b->fct = fct;
442 LIST_ADDQ(&post_deinit_list, &b->list);
443}
444
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200445/* used to register some per proxy de-initialization functions to call after
446 * everything has stopped.
447 */
448void hap_register_proxy_deinit(void (*fct)(struct proxy *))
449{
450 struct proxy_deinit_fct *b;
451
452 b = calloc(1, sizeof(*b));
453 if (!b) {
454 fprintf(stderr, "out of memory\n");
455 exit(1);
456 }
457 b->fct = fct;
458 LIST_ADDQ(&proxy_deinit_list, &b->list);
459}
460
461
462/* used to register some per server de-initialization functions to call after
463 * everything has stopped.
464 */
465void hap_register_server_deinit(void (*fct)(struct server *))
466{
467 struct server_deinit_fct *b;
468
469 b = calloc(1, sizeof(*b));
470 if (!b) {
471 fprintf(stderr, "out of memory\n");
472 exit(1);
473 }
474 b->fct = fct;
475 LIST_ADDQ(&server_deinit_list, &b->list);
476}
477
Willy Tarreau082b6282019-05-22 14:42:12 +0200478/* used to register some allocation functions to call for each thread. */
479void hap_register_per_thread_alloc(int (*fct)())
480{
481 struct per_thread_alloc_fct *b;
482
483 b = calloc(1, sizeof(*b));
484 if (!b) {
485 fprintf(stderr, "out of memory\n");
486 exit(1);
487 }
488 b->fct = fct;
489 LIST_ADDQ(&per_thread_alloc_list, &b->list);
490}
491
Christopher Faulet415f6112017-07-25 16:52:58 +0200492/* used to register some initialization functions to call for each thread. */
493void hap_register_per_thread_init(int (*fct)())
494{
495 struct per_thread_init_fct *b;
496
497 b = calloc(1, sizeof(*b));
498 if (!b) {
499 fprintf(stderr, "out of memory\n");
500 exit(1);
501 }
502 b->fct = fct;
503 LIST_ADDQ(&per_thread_init_list, &b->list);
504}
505
506/* used to register some de-initialization functions to call for each thread. */
507void hap_register_per_thread_deinit(void (*fct)())
508{
509 struct per_thread_deinit_fct *b;
510
511 b = calloc(1, sizeof(*b));
512 if (!b) {
513 fprintf(stderr, "out of memory\n");
514 exit(1);
515 }
516 b->fct = fct;
517 LIST_ADDQ(&per_thread_deinit_list, &b->list);
518}
519
Willy Tarreau082b6282019-05-22 14:42:12 +0200520/* used to register some free functions to call for each thread. */
521void hap_register_per_thread_free(int (*fct)())
522{
523 struct per_thread_free_fct *b;
524
525 b = calloc(1, sizeof(*b));
526 if (!b) {
527 fprintf(stderr, "out of memory\n");
528 exit(1);
529 }
530 b->fct = fct;
531 LIST_ADDQ(&per_thread_free_list, &b->list);
532}
533
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100534static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200535{
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200536 struct utsname utsname;
537
Willy Tarreau08dd2022019-11-21 18:07:30 +0100538 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
539 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100540
541 if (strlen(PRODUCT_URL_BUGS) > 0) {
542 char base_version[20];
543 int dots = 0;
544 char *del;
545
546 /* only retrieve the base version without distro-specific extensions */
547 for (del = haproxy_version; *del; del++) {
548 if (*del == '.')
549 dots++;
550 else if (*del < '0' || *del > '9')
551 break;
552 }
553
554 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
555 if (dots < 2)
556 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
557 else
558 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
559 }
Tim Duesterhusdfad6a42020-04-18 16:02:47 +0200560
561 if (uname(&utsname) == 0) {
562 printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
563 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200564}
565
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100566static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100567{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100568 struct build_opts_str *item;
569
Willy Tarreau7b066db2007-12-02 11:28:59 +0100570 printf("Build options :"
571#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100572 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100573#endif
574#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100575 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100576#endif
577#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100578 "\n CC = " BUILD_CC
579#endif
580#ifdef BUILD_CFLAGS
581 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100582#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100583#ifdef BUILD_OPTIONS
584 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100585#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100586#ifdef BUILD_FEATURES
587 "\n\nFeature list : " BUILD_FEATURES
588#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200589 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100590 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200591 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100592 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200593
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100594 list_for_each_entry(item, &build_opts_list, list) {
595 puts(item->str);
596 }
597
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100598 putchar('\n');
599
Willy Tarreaube5b6852009-10-03 18:57:08 +0200600 list_pollers(stdout);
601 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200602 list_mux_proto(stdout);
603 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100604 list_services(stdout);
605 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100606 list_filters(stdout);
607 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100608}
609
Willy Tarreaubaaee002006-06-26 02:48:02 +0200610/*
611 * This function prints the command line usage and exits
612 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100613static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200614{
615 display_version();
616 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200617 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200618 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200619 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100620 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200621 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200622 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200623 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200624 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200625 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100626#if defined(USE_SYSTEMD)
627 " -Ws master-worker mode with systemd notify support.\n"
628#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200629 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200630 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100631 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200632 " -m limits the usable amount of memory (in MB)\n"
633 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200634 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200635 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200636#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200637 " -de disables epoll() usage even when available\n"
638#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200639#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200640 " -dk disables kqueue() usage even when available\n"
641#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200642#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000643 " -dv disables event ports usage even when available\n"
644#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200645#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200646 " -dp disables poll() usage even when available\n"
647#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200648#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100649 " -dS disables splice usage (broken on old kernels)\n"
650#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200651#if defined(USE_GETADDRINFO)
652 " -dG disables getaddrinfo() usage\n"
653#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000654#if defined(SO_REUSEPORT)
655 " -dR disables SO_REUSEPORT usage\n"
656#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100657 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100658 " -dV disables SSL verify on servers side\n"
Willy Tarreau3eb10b82020-04-15 16:42:39 +0200659 " -dW fails if any warning is emitted\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200660 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200661 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200662 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200663 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100664 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200665 exit(1);
666}
667
668
669
670/*********************************************************************/
671/* more specific functions ***************************************/
672/*********************************************************************/
673
William Lallemand73b85e72017-06-01 17:38:51 +0200674/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
675 * pids the signal was correctly delivered to.
676 */
William Lallemande25473c2019-04-01 11:29:56 +0200677int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200678{
679 int p;
680 int ret = 0;
681 for (p = 0; p < nb_oldpids; p++)
682 if (kill(oldpids[p], sig) == 0)
683 ret++;
684 return ret;
685}
686
William Lallemand75ea0a02017-11-15 19:02:58 +0100687/*
William Lallemand73b85e72017-06-01 17:38:51 +0200688 * remove a pid forom the olpid array and decrease nb_oldpids
689 * return 1 pid was found otherwise return 0
690 */
691
692int delete_oldpid(int pid)
693{
694 int i;
695
696 for (i = 0; i < nb_oldpids; i++) {
697 if (oldpids[i] == pid) {
698 oldpids[i] = oldpids[nb_oldpids - 1];
699 oldpids[nb_oldpids - 1] = 0;
700 nb_oldpids--;
701 return 1;
702 }
703 }
704 return 0;
705}
706
William Lallemand85b0bd92017-06-01 17:38:53 +0200707
708static void get_cur_unixsocket()
709{
710 /* if -x was used, try to update the stat socket if not available anymore */
711 if (global.stats_fe) {
712 struct bind_conf *bind_conf;
713
714 /* pass through all stats socket */
715 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
716 struct listener *l;
717
718 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
719
720 if (l->addr.ss_family == AF_UNIX &&
721 (bind_conf->level & ACCESS_FD_LISTENERS)) {
722 const struct sockaddr_un *un;
723
724 un = (struct sockaddr_un *)&l->addr;
725 /* priority to old_unixsocket */
726 if (!cur_unixsocket) {
727 cur_unixsocket = strdup(un->sun_path);
728 } else {
729 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
730 free(cur_unixsocket);
731 cur_unixsocket = strdup(old_unixsocket);
732 return;
733 }
734 }
735 }
736 }
737 }
738 }
739 if (!cur_unixsocket && old_unixsocket)
740 cur_unixsocket = strdup(old_unixsocket);
741}
742
William Lallemand73b85e72017-06-01 17:38:51 +0200743/*
744 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800745 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200746 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100747void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200748{
William Lallemand00417412020-06-05 14:08:41 +0200749 char **next_argv = NULL;
750 int old_argc = 0; /* previous number of argument */
William Lallemand73b85e72017-06-01 17:38:51 +0200751 int next_argc = 0;
William Lallemand00417412020-06-05 14:08:41 +0200752 int i = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200753 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100754 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100755 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200756
757 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100758#if defined(USE_SYSTEMD)
759 if (global.tune.options & GTUNE_USE_SYSTEMD)
760 sd_notify(0, "RELOADING=1");
761#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200762 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
763
William Lallemandbc193052018-09-11 10:06:26 +0200764 mworker_proc_list_to_env(); /* put the children description in the env */
765
William Lallemand7c756a82018-11-26 11:53:40 +0100766 /* during the reload we must ensure that every FDs that can't be
767 * reuse (ie those that are not referenced in the proc_list)
768 * are closed or they will leak. */
769
770 /* close the listeners FD */
771 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200772
773 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
774 /* close the poller FD and the thread waker pipe FD */
775 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
776 ptdf->fct();
777 if (fdtab)
778 deinit_pollers();
779 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200780#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200781 /* close random device FDs */
782 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100783#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100784
Willy Tarreau8dca1952019-03-01 10:21:55 +0100785 /* restore the initial FD limits */
786 limit.rlim_cur = rlim_fd_cur_at_boot;
787 limit.rlim_max = rlim_fd_max_at_boot;
788 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
789 getrlimit(RLIMIT_NOFILE, &limit);
790 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
791 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
792 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
793 }
794
William Lallemand73b85e72017-06-01 17:38:51 +0200795 /* compute length */
William Lallemand00417412020-06-05 14:08:41 +0200796 while (old_argv[old_argc])
797 old_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200798
William Lallemand85b0bd92017-06-01 17:38:53 +0200799 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand00417412020-06-05 14:08:41 +0200800 next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1, sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200801 if (next_argv == NULL)
802 goto alloc_error;
803
William Lallemand00417412020-06-05 14:08:41 +0200804 /* copy the program name */
805 next_argv[next_argc++] = old_argv[0];
806
807 /* insert the new options just after argv[0] in case we have a -- */
808
William Lallemand73b85e72017-06-01 17:38:51 +0200809 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200810 if (mworker_child_nb() > 0) {
811 struct mworker_proc *child;
812
William Lallemand73b85e72017-06-01 17:38:51 +0200813 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200814
815 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100816 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200817 continue;
William Lallemand00417412020-06-05 14:08:41 +0200818 if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
William Lallemand73b85e72017-06-01 17:38:51 +0200819 goto alloc_error;
820 msg = NULL;
821 }
822 }
William Lallemand2bf6d622017-06-20 11:20:23 +0200823 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200824 if (cur_unixsocket) {
William Lallemand2bf6d622017-06-20 11:20:23 +0200825 next_argv[next_argc++] = "-x";
826 next_argv[next_argc++] = (char *)cur_unixsocket;
William Lallemand85b0bd92017-06-01 17:38:53 +0200827 }
828
William Lallemand00417412020-06-05 14:08:41 +0200829 /* copy the previous options */
830 for (i = 1; i < old_argc; i++)
831 next_argv[next_argc++] = old_argv[i];
832
Christopher Faulet767a84b2017-11-24 16:50:31 +0100833 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200834 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100835 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200836
Christopher Faulet767a84b2017-11-24 16:50:31 +0100837 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand9fc6c972020-06-08 10:01:13 +0200838 free(next_argv);
839 next_argv = NULL;
William Lallemand722d4ca2017-11-15 19:02:55 +0100840 return;
841
William Lallemand73b85e72017-06-01 17:38:51 +0200842alloc_error:
William Lallemand00417412020-06-05 14:08:41 +0200843 free(next_argv);
844 next_argv = NULL;
Joseph Herlant07a08342018-11-15 10:43:05 -0800845 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200846 return;
847}
848
William Lallemandb3f2be32018-09-11 10:06:18 +0200849static void mworker_loop()
850{
851
852#if defined(USE_SYSTEMD)
853 if (global.tune.options & GTUNE_USE_SYSTEMD)
854 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
855#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200856 /* Busy polling makes no sense in the master :-) */
857 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200858
William Lallemandbc193052018-09-11 10:06:26 +0200859 master = 1;
860
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100861 signal_unregister(SIGTTIN);
862 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100863 signal_unregister(SIGUSR1);
864 signal_unregister(SIGHUP);
865 signal_unregister(SIGQUIT);
866
William Lallemandb3f2be32018-09-11 10:06:18 +0200867 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
868 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreaud26c9f92019-12-11 14:24:07 +0100869 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
870 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200871 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
872 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
873 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
874 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
875
876 mworker_unblock_signals();
877 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100878 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200879
William Lallemandbc193052018-09-11 10:06:26 +0200880 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
881 some SIGCHLD were lost */
882
William Lallemandb3f2be32018-09-11 10:06:18 +0200883 global.nbthread = 1;
884 relative_pid = 1;
885 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100886 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200887
William Lallemand2672eb92018-12-14 15:52:39 +0100888#ifdef USE_THREAD
889 tid_bit = 1;
890 all_threads_mask = 1;
891#endif
892
William Lallemandb3f2be32018-09-11 10:06:18 +0200893 jobs++; /* this is the "master" job, we want to take care of the
894 signals even if there is no listener so the poll loop don't
895 leave */
896
897 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200898 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200899}
William Lallemandcb11fd22017-06-01 17:38:52 +0200900
901/*
902 * Reexec the process in failure mode, instead of exiting
903 */
904void reexec_on_failure()
905{
906 if (!atexit_flag)
907 return;
908
909 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
910
Christopher Faulet767a84b2017-11-24 16:50:31 +0100911 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200912 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200913}
William Lallemand73b85e72017-06-01 17:38:51 +0200914
915
916/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200917 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
918 * a signal zero to all subscribers. This means that it's as easy as
919 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200920 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100921static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200922{
923 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200924 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100925 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200926}
927
928/*
929 * upon SIGTTOU, we pause everything
930 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100931static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200932{
933 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100934 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200935}
936
937/*
938 * upon SIGTTIN, let's have a soft stop.
939 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100940static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200941{
Willy Tarreaube58c382011-07-24 18:28:10 +0200942 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200943}
944
945/*
946 * this function dumps every server's state when the process receives SIGHUP.
947 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100948static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200949{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100950 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200951
Christopher Faulet767a84b2017-11-24 16:50:31 +0100952 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200953 while (p) {
954 struct server *s = p->srv;
955
956 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
957 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100958 chunk_printf(&trash,
959 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
960 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200961 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100962 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200963 ha_warning("%s\n", trash.area);
964 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200965 s = s->next;
966 }
967
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200968 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
969 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100970 chunk_printf(&trash,
971 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
972 p->id,
973 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 +0200974 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100975 chunk_printf(&trash,
976 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
977 p->id,
978 (p->srv_bck) ? "is running on backup servers" : "has no server available",
979 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 +0200980 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100981 chunk_printf(&trash,
982 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
983 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
984 p->id, p->srv_act, p->srv_bck,
985 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 +0200986 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200987 ha_warning("%s\n", trash.area);
988 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200989
990 p = p->next;
991 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200992}
993
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100994static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200995{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200996 /* dump memory usage then free everything possible */
997 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100998 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200999}
1000
William Lallemande1340412017-12-28 16:09:36 +01001001/*
1002 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1003 * If <fd> < 0, it opens /dev/null and use it to dup
1004 *
1005 * In the case of chrooting, you have to open /dev/null before the chroot, and
1006 * pass the <fd> to this function
1007 */
1008static void stdio_quiet(int fd)
1009{
1010 if (fd < 0)
1011 fd = open("/dev/null", O_RDWR, 0);
1012
1013 if (fd > -1) {
1014 fclose(stdin);
1015 fclose(stdout);
1016 fclose(stderr);
1017
1018 dup2(fd, 0);
1019 dup2(fd, 1);
1020 dup2(fd, 2);
1021 if (fd > 2)
1022 close(fd);
1023 return;
1024 }
1025
1026 ha_alert("Cannot open /dev/null\n");
1027 exit(EXIT_FAILURE);
1028}
1029
1030
Joseph Herlant03420902018-11-15 10:41:50 -08001031/* This function checks if cfg_cfgfiles contains directories.
1032 * If it finds one, it adds all the files (and only files) it contains
1033 * in cfg_cfgfiles in place of the directory (and removes the directory).
1034 * It adds the files in lexical order.
1035 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001036 * It doesn't add files with name starting with '.'
1037 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001038static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001039{
1040 struct wordlist *wl, *wlb;
1041 char *err = NULL;
1042
1043 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1044 struct stat file_stat;
1045 struct dirent **dir_entries = NULL;
1046 int dir_entries_nb;
1047 int dir_entries_it;
1048
1049 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001050 ha_alert("Cannot open configuration file/directory %s : %s\n",
1051 wl->s,
1052 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001053 exit(1);
1054 }
1055
1056 if (!S_ISDIR(file_stat.st_mode))
1057 continue;
1058
1059 /* from this point wl->s is a directory */
1060
1061 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1062 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001063 ha_alert("Cannot open configuration directory %s : %s\n",
1064 wl->s,
1065 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001066 exit(1);
1067 }
1068
1069 /* for each element in the directory wl->s */
1070 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1071 struct dirent *dir_entry = dir_entries[dir_entries_it];
1072 char *filename = NULL;
1073 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1074
1075 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001076 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001077 */
1078 if (dir_entry->d_name[0] == '.' ||
1079 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1080 goto next_dir_entry;
1081
1082 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001083 ha_alert("Cannot load configuration files %s : out of memory.\n",
1084 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001085 exit(1);
1086 }
1087
1088 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001089 ha_alert("Cannot open configuration file %s : %s\n",
1090 wl->s,
1091 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001092 exit(1);
1093 }
1094
1095 /* don't add anything else than regular file in cfg_cfgfiles
1096 * this way we avoid loops
1097 */
1098 if (!S_ISREG(file_stat.st_mode))
1099 goto next_dir_entry;
1100
1101 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001102 ha_alert("Cannot load configuration files %s : %s\n",
1103 filename,
1104 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001105 exit(1);
1106 }
1107
1108next_dir_entry:
1109 free(filename);
1110 free(dir_entry);
1111 }
1112
1113 free(dir_entries);
1114
1115 /* remove the current directory (wl) from cfg_cfgfiles */
1116 free(wl->s);
1117 LIST_DEL(&wl->list);
1118 free(wl);
1119 }
1120
1121 free(err);
1122}
1123
Olivier Houchardf73629d2017-04-05 22:33:04 +02001124static int get_old_sockets(const char *unixsocket)
1125{
1126 char *cmsgbuf = NULL, *tmpbuf = NULL;
1127 int *tmpfd = NULL;
1128 struct sockaddr_un addr;
1129 struct cmsghdr *cmsg;
1130 struct msghdr msghdr;
1131 struct iovec iov;
1132 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001133 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001134 int sock = -1;
1135 int ret = -1;
1136 int ret2 = -1;
1137 int fd_nb;
1138 int got_fd = 0;
1139 int i = 0;
1140 size_t maxoff = 0, curoff = 0;
1141
1142 memset(&msghdr, 0, sizeof(msghdr));
1143 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1144 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001145 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001146 goto out;
1147 }
1148 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1149 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001150 ha_warning("Failed to connect to the old process socket '%s'\n",
1151 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001152 goto out;
1153 }
Willy Tarreau719e07c2019-12-11 16:29:10 +01001154 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path) - 1);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001155 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1156 addr.sun_family = PF_UNIX;
1157 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1158 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001159 ha_warning("Failed to connect to the old process socket '%s'\n",
1160 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001161 goto out;
1162 }
Olivier Houchard54740872017-04-06 14:45:14 +02001163 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001164 iov.iov_base = &fd_nb;
1165 iov.iov_len = sizeof(fd_nb);
1166 msghdr.msg_iov = &iov;
1167 msghdr.msg_iovlen = 1;
1168 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1169 /* First, get the number of file descriptors to be received */
1170 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001171 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001172 goto out;
1173 }
1174 if (fd_nb == 0) {
1175 ret = 0;
1176 goto out;
1177 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001178 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001179 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001180 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001181 goto out;
1182 }
1183 tmpfd = malloc(fd_nb * sizeof(int));
1184 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001185 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001186 goto out;
1187 }
1188 msghdr.msg_control = cmsgbuf;
1189 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001190 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001191 do {
1192 int ret3;
1193
1194 iov.iov_base = tmpbuf + curoff;
1195 ret = recvmsg(sock, &msghdr, 0);
1196 if (ret == -1 && errno == EINTR)
1197 continue;
1198 if (ret <= 0)
1199 break;
1200 /* Send an ack to let the sender know we got the sockets
1201 * and it can send some more
1202 */
1203 do {
1204 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1205 } while (ret3 == -1 && errno == EINTR);
1206 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1207 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1208 if (cmsg->cmsg_level == SOL_SOCKET &&
1209 cmsg->cmsg_type == SCM_RIGHTS) {
1210 size_t totlen = cmsg->cmsg_len -
1211 CMSG_LEN(0);
1212 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001213 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001214 goto out;
1215 }
1216 /*
1217 * Be paranoid and use memcpy() to avoid any
1218 * potential alignement issue.
1219 */
1220 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1221 got_fd += totlen / sizeof(int);
1222 }
1223 }
1224 curoff += ret;
1225 } while (got_fd < fd_nb);
1226
1227 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001228 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1229 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001230 goto out;
1231 }
1232 maxoff = curoff;
1233 curoff = 0;
1234 for (i = 0; i < got_fd; i++) {
1235 int fd = tmpfd[i];
1236 socklen_t socklen;
1237 int len;
1238
1239 xfer_sock = calloc(1, sizeof(*xfer_sock));
1240 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001241 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001242 break;
1243 }
1244 xfer_sock->fd = -1;
1245
1246 socklen = sizeof(xfer_sock->addr);
1247 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001248 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001249 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001250 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001251 continue;
1252 }
1253 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001254 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001255 goto out;
1256 }
1257 len = tmpbuf[curoff++];
1258 if (len > 0) {
1259 /* We have a namespace */
1260 if (curoff + len > 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 xfer_sock->namespace = malloc(len + 1);
1265 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001266 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001267 goto out;
1268 }
1269 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1270 xfer_sock->namespace[len] = 0;
1271 curoff += len;
1272 }
1273 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001274 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001275 goto out;
1276 }
1277 len = tmpbuf[curoff++];
1278 if (len > 0) {
1279 /* We have an interface */
1280 if (curoff + len > 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 xfer_sock->iface = malloc(len + 1);
1285 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001286 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001287 goto out;
1288 }
1289 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001290 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001291 curoff += len;
1292 }
1293 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001294 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001295 goto out;
1296 }
1297 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1298 sizeof(xfer_sock->options));
1299 curoff += sizeof(xfer_sock->options);
1300
1301 xfer_sock->fd = fd;
1302 if (xfer_sock_list)
1303 xfer_sock_list->prev = xfer_sock;
1304 xfer_sock->next = xfer_sock_list;
1305 xfer_sock->prev = NULL;
1306 xfer_sock_list = xfer_sock;
1307 xfer_sock = NULL;
1308 }
1309
1310 ret2 = 0;
1311out:
1312 /* If we failed midway make sure to close the remaining
1313 * file descriptors
1314 */
1315 if (tmpfd != NULL && i < got_fd) {
1316 for (; i < got_fd; i++) {
1317 close(tmpfd[i]);
1318 }
1319 }
1320 free(tmpbuf);
1321 free(tmpfd);
1322 free(cmsgbuf);
1323 if (sock != -1)
1324 close(sock);
1325 if (xfer_sock) {
1326 free(xfer_sock->namespace);
1327 free(xfer_sock->iface);
1328 if (xfer_sock->fd != -1)
1329 close(xfer_sock->fd);
1330 free(xfer_sock);
1331 }
1332 return (ret2);
1333}
1334
Willy Tarreaubaaee002006-06-26 02:48:02 +02001335/*
William Lallemand73b85e72017-06-01 17:38:51 +02001336 * copy and cleanup the current argv
William Lallemanddf6c5a82020-06-04 17:40:23 +02001337 * Remove the -sf /-st / -x parameters
William Lallemand73b85e72017-06-01 17:38:51 +02001338 * Return an allocated copy of argv
1339 */
1340
1341static char **copy_argv(int argc, char **argv)
1342{
William Lallemanddf6c5a82020-06-04 17:40:23 +02001343 char **newargv, **retargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001344
1345 newargv = calloc(argc + 2, sizeof(char *));
1346 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001347 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001348 return NULL;
1349 }
William Lallemanddf6c5a82020-06-04 17:40:23 +02001350 retargv = newargv;
William Lallemand73b85e72017-06-01 17:38:51 +02001351
William Lallemanddf6c5a82020-06-04 17:40:23 +02001352 /* first copy argv[0] */
1353 *newargv++ = *argv++;
1354 argc--;
1355
1356 while (argc > 0) {
1357 if (**argv != '-') {
1358 /* non options are copied but will fail in the argument parser */
1359 *newargv++ = *argv++;
1360 argc--;
1361
1362 } else {
1363 char *flag;
1364
1365 flag = *argv + 1;
1366
1367 if (flag[0] == '-' && flag[1] == 0) {
1368 /* "--\0" copy every arguments till the end of argv */
1369 *newargv++ = *argv++;
1370 argc--;
1371
1372 while (argc > 0) {
1373 *newargv++ = *argv++;
1374 argc--;
1375 }
1376 } else {
1377 switch (*flag) {
1378 case 's':
1379 /* -sf / -st and their parameters are ignored */
1380 if (flag[1] == 'f' || flag[1] == 't') {
1381 argc--;
1382 argv++;
1383 /* The list can't contain a negative value since the only
1384 way to know the end of this list is by looking for the
1385 next option or the end of the options */
1386 while (argc > 0 && argv[0][0] != '-') {
1387 argc--;
1388 argv++;
1389 }
1390 }
1391 break;
1392
1393 case 'x':
1394 /* this option and its parameter are ignored */
1395 argc--;
1396 argv++;
1397 if (argc > 0) {
1398 argc--;
1399 argv++;
1400 }
1401 break;
1402
1403 case 'C':
1404 case 'n':
1405 case 'm':
1406 case 'N':
1407 case 'L':
1408 case 'f':
1409 case 'p':
1410 case 'S':
1411 /* these options have only 1 parameter which must be copied and can start with a '-' */
1412 *newargv++ = *argv++;
1413 argc--;
1414 if (argc == 0)
1415 goto error;
1416 *newargv++ = *argv++;
1417 argc--;
1418 break;
1419 default:
1420 /* for other options just copy them without parameters, this is also done
1421 * for options like "--foo", but this will fail in the argument parser.
1422 * */
1423 *newargv++ = *argv++;
1424 argc--;
1425 break;
1426 }
William Lallemand73b85e72017-06-01 17:38:51 +02001427 }
1428 }
William Lallemand73b85e72017-06-01 17:38:51 +02001429 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001430
William Lallemanddf6c5a82020-06-04 17:40:23 +02001431 return retargv;
1432
1433error:
1434 free(retargv);
1435 return NULL;
William Lallemand73b85e72017-06-01 17:38:51 +02001436}
1437
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001438
1439/* Performs basic random seed initialization. The main issue with this is that
1440 * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
1441 * which means that there will only be 4 billion possible random sequences once
1442 * srandom() is called, regardless of the internal state. Not calling it is
1443 * even worse as we'll always produce the same randoms sequences. What we do
1444 * here is to create an initial sequence from various entropy sources, hash it
1445 * using SHA1 and keep the resulting 160 bits available globally.
1446 *
1447 * We initialize the current process with the first 32 bits before starting the
1448 * polling loop, where all this will be changed to have process specific and
1449 * thread specific sequences.
Willy Tarreau52bf8392020-03-08 00:42:37 +01001450 *
1451 * Before starting threads, it's still possible to call random() as srandom()
1452 * is initialized from this, but after threads and/or processes are started,
1453 * only ha_random() is expected to be used to guarantee distinct sequences.
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001454 */
1455static void ha_random_boot(char *const *argv)
1456{
1457 unsigned char message[256];
1458 unsigned char *m = message;
1459 struct timeval tv;
1460 blk_SHA_CTX ctx;
1461 unsigned long l;
1462 int fd;
1463 int i;
1464
1465 /* start with current time as pseudo-random seed */
1466 gettimeofday(&tv, NULL);
1467 write_u32(m, tv.tv_sec); m += 4;
1468 write_u32(m, tv.tv_usec); m += 4;
1469
1470 /* PID and PPID add some OS-based randomness */
1471 write_u16(m, getpid()); m += 2;
1472 write_u16(m, getppid()); m += 2;
1473
1474 /* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
1475 fd = open("/dev/urandom", O_RDONLY);
1476 if (fd >= 0) {
1477 i = read(fd, m, 20);
1478 if (i > 0)
1479 m += i;
1480 close(fd);
1481 }
1482
1483 /* take up to 160 bits bytes from openssl (non-blocking) */
1484#ifdef USE_OPENSSL
1485 if (RAND_bytes(m, 20) == 1)
1486 m += 20;
1487#endif
1488
1489 /* take 160 bits from existing random in case it was already initialized */
1490 for (i = 0; i < 5; i++) {
1491 write_u32(m, random());
1492 m += 4;
1493 }
1494
1495 /* stack address (benefit form operating system's ASLR) */
1496 l = (unsigned long)&m;
1497 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1498
1499 /* argv address (benefit form operating system's ASLR) */
1500 l = (unsigned long)&argv;
1501 memcpy(m, &l, sizeof(l)); m += sizeof(l);
1502
1503 /* use tv_usec again after all the operations above */
1504 gettimeofday(&tv, NULL);
1505 write_u32(m, tv.tv_usec); m += 4;
1506
1507 /*
1508 * At this point, ~84-92 bytes have been used
1509 */
1510
1511 /* finish with the hostname */
1512 strncpy((char *)m, hostname, message + sizeof(message) - m);
1513 m += strlen(hostname);
1514
1515 /* total message length */
1516 l = m - message;
1517
1518 memset(&ctx, 0, sizeof(ctx));
1519 blk_SHA1_Init(&ctx);
1520 blk_SHA1_Update(&ctx, message, l);
1521 blk_SHA1_Final(boot_seed, &ctx);
1522
1523 srandom(read_u32(boot_seed));
Willy Tarreau52bf8392020-03-08 00:42:37 +01001524 ha_random_seed(boot_seed, sizeof(boot_seed));
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001525}
1526
Willy Tarreau5a023f02019-03-01 14:19:31 +01001527/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1528 * setting, and returns it. It may return -1 meaning "unlimited" if some
1529 * unlimited proxies have been found and the global.maxconn value is not yet
1530 * set. It may also return a value greater than maxconn if it's not yet set.
1531 * Note that a value of zero means there is no need for pipes. -1 is never
1532 * returned if global.maxconn is valid.
1533 */
1534static int compute_ideal_maxpipes()
1535{
1536 struct proxy *cur;
1537 int nbfe = 0, nbbe = 0;
1538 int unlimited = 0;
1539 int pipes;
1540 int max;
1541
1542 for (cur = proxies_list; cur; cur = cur->next) {
1543 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1544 if (cur->cap & PR_CAP_FE) {
1545 max = cur->maxconn;
1546 nbfe += max;
1547 if (!max) {
1548 unlimited = 1;
1549 break;
1550 }
1551 }
1552 if (cur->cap & PR_CAP_BE) {
1553 max = cur->fullconn ? cur->fullconn : global.maxconn;
1554 nbbe += max;
1555 if (!max) {
1556 unlimited = 1;
1557 break;
1558 }
1559 }
1560 }
1561 }
1562
1563 pipes = MAX(nbfe, nbbe);
1564 if (global.maxconn) {
1565 if (pipes > global.maxconn || unlimited)
1566 pipes = global.maxconn;
1567 } else if (unlimited) {
1568 pipes = -1;
1569 }
1570
1571 return pipes >= 4 ? pipes / 4 : pipes;
1572}
1573
Willy Tarreauac350932019-03-01 15:43:14 +01001574/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1575 * rlimits and computes an ideal maxconn. It's meant to be called only when
1576 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001577 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1578 * default 100) is returned as it is expected that it will even run on tight
1579 * environments, and will maintain compatibility with previous packages that
1580 * used to rely on this value as the default one. The system will emit a
1581 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001582 */
1583static int compute_ideal_maxconn()
1584{
1585 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1586 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1587 int pipes = compute_ideal_maxpipes();
Willy Tarreaub1beaa32020-03-06 10:25:31 +01001588 int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
Willy Tarreauac350932019-03-01 15:43:14 +01001589 int maxconn;
1590
1591 /* we have to take into account these elements :
1592 * - number of engine_fds, which inflates the number of FD needed per
1593 * connection by this number.
1594 * - number of pipes per connection on average : for the unlimited
1595 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1596 * fixed value of 2*pipes.
1597 * - two FDs per connection
1598 */
1599
1600 /* subtract listeners and checks */
1601 remain -= global.maxsock;
1602
Willy Tarreau3f200852019-03-14 19:13:17 +01001603 /* one epoll_fd/kqueue_fd per thread */
1604 remain -= global.nbthread;
1605
1606 /* one wake-up pipe (2 fd) per thread */
1607 remain -= 2 * global.nbthread;
1608
Willy Tarreauac350932019-03-01 15:43:14 +01001609 /* Fixed pipes values : we only subtract them if they're not larger
1610 * than the remaining FDs because pipes are optional.
1611 */
1612 if (pipes >= 0 && pipes * 2 < remain)
1613 remain -= pipes * 2;
1614
1615 if (pipes < 0) {
1616 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1617 * = maxconn * (2 + 0.5 + engine_fds)
1618 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1619 */
1620 maxconn = 2 * remain / (5 + 2 * engine_fds);
1621 } else {
1622 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1623 * = maxconn * (2 + engine_fds)
1624 */
1625 maxconn = remain / (2 + engine_fds);
1626 }
1627
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001628 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001629}
1630
Willy Tarreaua409f302020-03-10 17:08:53 +01001631/* computes the estimated maxsock value for the given maxconn based on the
1632 * possibly set global.maxpipes and existing partial global.maxsock. It may
1633 * temporarily change global.maxconn for the time needed to propagate the
1634 * computations, and will reset it.
1635 */
1636static int compute_ideal_maxsock(int maxconn)
1637{
1638 int maxpipes = global.maxpipes;
1639 int maxsock = global.maxsock;
1640
1641
1642 if (!maxpipes) {
1643 int old_maxconn = global.maxconn;
1644
1645 global.maxconn = maxconn;
1646 maxpipes = compute_ideal_maxpipes();
1647 global.maxconn = old_maxconn;
1648 }
1649
1650 maxsock += maxconn * 2; /* each connection needs two sockets */
1651 maxsock += maxpipes * 2; /* each pipe needs two FDs */
1652 maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
1653 maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
1654
1655 /* compute fd used by async engines */
1656 if (global.ssl_used_async_engines) {
1657 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1658
1659 maxsock += maxconn * sides * global.ssl_used_async_engines;
1660 }
1661 return maxsock;
1662}
1663
Willy Tarreau304e17e2020-03-10 17:54:54 +01001664/* Tests if it is possible to set the current process' RLIMIT_NOFILE to
1665 * <maxsock>, then sets it back to the previous value. Returns non-zero if the
1666 * value is accepted, non-zero otherwise. This is used to determine if an
1667 * automatic limit may be applied or not. When it is not, the caller knows that
1668 * the highest we can do is the rlim_max at boot. In case of error, we return
1669 * that the setting is possible, so that we defer the error processing to the
1670 * final stage in charge of enforcing this.
1671 */
1672static int check_if_maxsock_permitted(int maxsock)
1673{
1674 struct rlimit orig_limit, test_limit;
1675 int ret;
1676
1677 if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1678 return 1;
1679
1680 /* don't go further if we can't even set to what we have */
1681 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1682 return 1;
1683
1684 test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
1685 test_limit.rlim_cur = test_limit.rlim_max;
1686 ret = setrlimit(RLIMIT_NOFILE, &test_limit);
1687
1688 if (setrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
1689 return 1;
1690
1691 return ret == 0;
1692}
1693
1694
William Lallemand73b85e72017-06-01 17:38:51 +02001695/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001696 * This function initializes all the necessary variables. It only returns
1697 * if everything is OK. If something fails, it exits.
1698 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001699static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001700{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001701 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001702 char *tmp;
1703 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001704 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001705 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001706 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001707 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001708 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001709 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001710 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001711 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001712
Christopher Faulete3a5e352017-10-24 13:53:54 +02001713 global.mode = MODE_STARTING;
William Lallemand00417412020-06-05 14:08:41 +02001714 old_argv = copy_argv(argc, argv);
1715 if (!old_argv) {
William Lallemanddf6c5a82020-06-04 17:40:23 +02001716 ha_alert("failed to copy argv.\n");
1717 exit(1);
1718 }
William Lallemand73b85e72017-06-01 17:38:51 +02001719
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001720 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001721 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001722 exit(1);
1723 }
David du Colombier7af46052012-05-16 14:16:48 +02001724
Emeric Brun2b920a12010-09-23 18:30:22 +02001725 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1726 * the string in case of truncation, and at least FreeBSD appears not to do
1727 * it.
1728 */
1729 memset(hostname, 0, sizeof(hostname));
1730 gethostname(hostname, sizeof(hostname) - 1);
Dragan Dosen4f014152020-06-18 16:56:47 +02001731
1732 if ((localpeer = strdup(hostname)) == NULL) {
1733 ha_alert("Cannot allocate memory for local peer.\n");
1734 exit(EXIT_FAILURE);
1735 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001736 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001737
William Lallemand24c928c2020-01-14 17:58:18 +01001738 /* we were in mworker mode, we should restart in mworker mode */
1739 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1740 global.mode |= MODE_MWORKER;
1741
Willy Tarreaubaaee002006-06-26 02:48:02 +02001742 /*
1743 * Initialize the previously static variables.
1744 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001745
Willy Tarreau173d9952018-01-26 21:48:23 +01001746 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001747 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001748
Willy Tarreaubaaee002006-06-26 02:48:02 +02001749
1750#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001751 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001752#endif
1753
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001754 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001755 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001756 start_date = now;
1757
Willy Tarreau6c3a6812020-03-06 18:57:15 +01001758 ha_random_boot(argv);
Willy Tarreau84310e22014-02-14 11:59:04 +01001759
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001760 if (init_acl() != 0)
1761 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001762
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001763 /* Initialise lua. */
1764 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001765
Christopher Fauletff2613e2016-11-09 11:36:17 +01001766 /* Initialize process vars */
1767 vars_init(&global.vars, SCOPE_PROC);
1768
Willy Tarreau43b78992009-01-25 15:42:27 +01001769 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001770#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001771 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001772#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001773#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001774 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001775#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001776#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001777 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001778#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001779#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001780 global.tune.options |= GTUNE_USE_EVPORTS;
1781#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001782#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001783 global.tune.options |= GTUNE_USE_SPLICE;
1784#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001785#if defined(USE_GETADDRINFO)
1786 global.tune.options |= GTUNE_USE_GAI;
1787#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001788#if defined(SO_REUSEPORT)
1789 global.tune.options |= GTUNE_USE_REUSEPORT;
1790#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001791
1792 pid = getpid();
1793 progname = *argv;
1794 while ((tmp = strchr(progname, '/')) != NULL)
1795 progname = tmp + 1;
1796
Kevinm48936af2010-12-22 16:08:21 +00001797 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001798 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001799
Willy Tarreaubaaee002006-06-26 02:48:02 +02001800 argc--; argv++;
1801 while (argc > 0) {
1802 char *flag;
1803
1804 if (**argv == '-') {
1805 flag = *argv+1;
1806
1807 /* 1 arg */
1808 if (*flag == 'v') {
1809 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001810 if (flag[1] == 'v') /* -vv */
1811 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001812 exit(0);
1813 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001814#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001815 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001816 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001817#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001818#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001819 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001820 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001821#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001822#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001823 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001824 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001825#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001826#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001827 else if (*flag == 'd' && flag[1] == 'v')
1828 global.tune.options &= ~GTUNE_USE_EVPORTS;
1829#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001830#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001831 else if (*flag == 'd' && flag[1] == 'S')
1832 global.tune.options &= ~GTUNE_USE_SPLICE;
1833#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001834#if defined(USE_GETADDRINFO)
1835 else if (*flag == 'd' && flag[1] == 'G')
1836 global.tune.options &= ~GTUNE_USE_GAI;
1837#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001838#if defined(SO_REUSEPORT)
1839 else if (*flag == 'd' && flag[1] == 'R')
1840 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1841#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001842 else if (*flag == 'd' && flag[1] == 'V')
1843 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001844 else if (*flag == 'V')
1845 arg_mode |= MODE_VERBOSE;
1846 else if (*flag == 'd' && flag[1] == 'b')
1847 arg_mode |= MODE_FOREGROUND;
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001848 else if (*flag == 'd' && flag[1] == 'W')
1849 arg_mode |= MODE_ZERO_WARNING;
Willy Tarreau6e064432012-05-08 15:40:42 +02001850 else if (*flag == 'd' && flag[1] == 'M')
1851 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001852 else if (*flag == 'd' && flag[1] == 'r')
1853 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001854 else if (*flag == 'd')
1855 arg_mode |= MODE_DEBUG;
1856 else if (*flag == 'c')
1857 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001858 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001859 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001860 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001861 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001862#if defined(USE_SYSTEMD)
1863 global.tune.options |= GTUNE_USE_SYSTEMD;
1864#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001865 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 +01001866 usage(progname);
1867#endif
1868 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001869 else if (*flag == 'W')
1870 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001871 else if (*flag == 'q')
1872 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001873 else if (*flag == 'x') {
William Lallemand4f71d302020-06-04 23:41:29 +02001874 if (argc <= 1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001875 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001876 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001877 }
William Lallemand4fc09692017-06-19 16:37:19 +02001878 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001879 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001880 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001881
Olivier Houchardf73629d2017-04-05 22:33:04 +02001882 argv++;
1883 argc--;
1884 }
William Lallemande7361152018-10-26 14:47:36 +02001885 else if (*flag == 'S') {
1886 struct wordlist *c;
1887
William Lallemanda6b32492020-06-04 23:49:20 +02001888 if (argc <= 1) {
William Lallemande7361152018-10-26 14:47:36 +02001889 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1890 usage(progname);
1891 }
1892 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1893 ha_alert("Cannot allocate memory\n");
1894 exit(EXIT_FAILURE);
1895 }
1896 LIST_ADD(&mworker_cli_conf, &c->list);
1897
1898 argv++;
1899 argc--;
1900 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001901 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1902 /* list of pids to finish ('f') or terminate ('t') */
1903
1904 if (flag[1] == 'f')
1905 oldpids_sig = SIGUSR1; /* finish then exit */
1906 else
1907 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001908 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001909 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001910 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1911 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001912 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001913 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001914 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001915 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001916 errno = 0;
1917 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1918 if (errno) {
1919 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1920 flag,
1921 *argv, strerror(errno));
1922 exit(1);
1923 } else if (endptr && strlen(endptr)) {
Willy Tarreau90807112020-02-25 08:16:33 +01001924 while (isspace((unsigned char)*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001925 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001926 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1927 flag, endptr);
1928 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001929 }
Chris Lane236062f2018-02-05 23:15:44 +00001930 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001931 if (oldpids[nb_oldpids] <= 0)
1932 usage(progname);
1933 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001934 }
1935 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001936 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1937 /* now that's a cfgfile list */
1938 argv++; argc--;
1939 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001940 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001941 ha_alert("Cannot load configuration file/directory %s : %s\n",
1942 *argv,
1943 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001944 exit(1);
1945 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001946 argv++; argc--;
1947 }
1948 break;
1949 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001950 else { /* >=2 args */
1951 argv++; argc--;
1952 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001953 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001954
1955 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001956 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001957 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001958 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001959 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001960 case 'L' :
Dragan Dosen4f014152020-06-18 16:56:47 +02001961 free(localpeer);
1962 if ((localpeer = strdup(*argv)) == NULL) {
1963 ha_alert("Cannot allocate memory for local peer.\n");
1964 exit(EXIT_FAILURE);
1965 }
William Lallemanddaf4cd22018-04-17 16:46:13 +02001966 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Dragan Dosen13cd54c2020-06-18 18:24:05 +02001967 global.localpeer_cmdline = 1;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001968 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001969 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001970 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001971 ha_alert("Cannot load configuration file/directory %s : %s\n",
1972 *argv,
1973 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001974 exit(1);
1975 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001976 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001977 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001978 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001979 }
1980 }
1981 }
1982 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001983 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001984 argv++; argc--;
1985 }
1986
Christopher Faulete3a5e352017-10-24 13:53:54 +02001987 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
Willy Tarreau3eb10b82020-04-15 16:42:39 +02001988 | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001989
William Lallemand944e6192018-11-21 15:48:31 +01001990 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001991 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001992 global.mode |= MODE_MWORKER_WAIT;
1993 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001994 }
1995
1996 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1997 atexit_flag = 1;
1998 atexit(reexec_on_failure);
1999 }
2000
Willy Tarreau576132e2011-09-10 19:26:56 +02002001 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002002 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02002003 exit(1);
2004 }
2005
Willy Tarreaubaaee002006-06-26 02:48:02 +02002006 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02002007
2008 init_default_instance();
2009
William Lallemand944e6192018-11-21 15:48:31 +01002010 /* in wait mode, we don't try to read the configuration files */
2011 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02002012 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01002013
William Lallemand944e6192018-11-21 15:48:31 +01002014 /* handle cfgfiles that are actually directories */
2015 cfgfiles_expand_directories();
2016
2017 if (LIST_ISEMPTY(&cfg_cfgfiles))
2018 usage(progname);
2019
2020
2021 list_for_each_entry(wl, &cfg_cfgfiles, list) {
2022 int ret;
2023
William Lallemand7b302d82019-05-20 11:15:37 +02002024 if (trash->data)
2025 chunk_appendf(trash, ";");
2026
2027 chunk_appendf(trash, "%s", wl->s);
2028
William Lallemand944e6192018-11-21 15:48:31 +01002029 ret = readcfgfile(wl->s);
2030 if (ret == -1) {
2031 ha_alert("Could not open configuration file %s : %s\n",
2032 wl->s, strerror(errno));
2033 exit(1);
2034 }
2035 if (ret & (ERR_ABORT|ERR_FATAL))
2036 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
2037 err_code |= ret;
2038 if (err_code & ERR_ABORT)
2039 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01002040 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02002041
William Lallemand944e6192018-11-21 15:48:31 +01002042 /* do not try to resolve arguments nor to spot inconsistencies when
2043 * the configuration contains fatal errors caused by files not found
2044 * or failed memory allocations.
2045 */
2046 if (err_code & (ERR_ABORT|ERR_FATAL)) {
2047 ha_alert("Fatal errors found in configuration.\n");
2048 exit(1);
2049 }
William Lallemand7b302d82019-05-20 11:15:37 +02002050 if (trash->data)
2051 setenv("HAPROXY_CFGFILES", trash->area, 1);
2052
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02002053 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002054 if (global.mode & MODE_MWORKER) {
2055 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01002056 struct mworker_proc *tmproc;
2057
William Lallemand482f9a92019-04-12 16:15:00 +02002058 setenv("HAPROXY_MWORKER", "1", 1);
2059
William Lallemand16dd1b32018-11-19 18:46:18 +01002060 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
2061
William Lallemandf3a86832019-04-01 11:29:58 +02002062 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01002063 if (!tmproc) {
2064 ha_alert("Cannot allocate process structures.\n");
2065 exit(EXIT_FAILURE);
2066 }
William Lallemand8f7069a2019-04-12 16:09:23 +02002067 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01002068 tmproc->reloads = 0;
2069 tmproc->relative_pid = 0;
2070 tmproc->pid = pid;
2071 tmproc->timestamp = start_date.tv_sec;
2072 tmproc->ipc_fd[0] = -1;
2073 tmproc->ipc_fd[1] = -1;
2074
2075 proc_self = tmproc;
2076
2077 LIST_ADDQ(&proc_list, &tmproc->list);
2078 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002079
2080 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02002081
William Lallemandf3a86832019-04-01 11:29:58 +02002082 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02002083 if (!tmproc) {
2084 ha_alert("Cannot allocate process structures.\n");
2085 exit(EXIT_FAILURE);
2086 }
2087
William Lallemand8f7069a2019-04-12 16:09:23 +02002088 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02002089 tmproc->pid = -1;
2090 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01002091 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02002092 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01002093 tmproc->ipc_fd[0] = -1;
2094 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02002095
2096 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
2097 exit(EXIT_FAILURE);
2098 }
2099
2100 LIST_ADDQ(&proc_list, &tmproc->list);
2101 }
William Lallemand944e6192018-11-21 15:48:31 +01002102 }
2103 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
2104 struct wordlist *it, *c;
2105
William Lallemand1b663612018-10-26 14:47:33 +02002106 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02002107
William Lallemande7361152018-10-26 14:47:36 +02002108
William Lallemand550db6d2018-11-06 17:37:12 +01002109 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02002110
William Lallemand550db6d2018-11-06 17:37:12 +01002111 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02002112 ha_alert("Can't create the master's CLI.\n");
2113 exit(EXIT_FAILURE);
2114 }
William Lallemande7361152018-10-26 14:47:36 +02002115
William Lallemand550db6d2018-11-06 17:37:12 +01002116 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
2117
2118 if (mworker_cli_proxy_new_listener(c->s) < 0) {
2119 ha_alert("Can't create the master's CLI.\n");
2120 exit(EXIT_FAILURE);
2121 }
2122 LIST_DEL(&c->list);
2123 free(c->s);
2124 free(c);
2125 }
2126 }
William Lallemandce83b4a2018-10-26 14:47:30 +02002127 }
2128
Willy Tarreaubb925012009-07-23 13:36:36 +02002129 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02002130 for (px = proxies_list; px; px = px->next) {
2131 struct server *srv;
2132 struct post_proxy_check_fct *ppcf;
2133 struct post_server_check_fct *pscf;
2134
2135 list_for_each_entry(pscf, &post_server_check_list, list) {
2136 for (srv = px->srv; srv; srv = srv->next)
2137 err_code |= pscf->fct(srv);
2138 }
2139 list_for_each_entry(ppcf, &post_proxy_check_list, list)
2140 err_code |= ppcf->fct(px);
2141 }
Willy Tarreaubb925012009-07-23 13:36:36 +02002142 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002143 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02002144 exit(1);
2145 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002146
Carl Henrik Lundef91ac192020-02-27 16:45:50 +01002147 err_code |= pattern_finalize_config();
2148 if (err_code & (ERR_ABORT|ERR_FATAL)) {
2149 ha_alert("Failed to finalize pattern config.\n");
2150 exit(1);
2151 }
Willy Tarreau0f936722019-04-11 14:47:08 +02002152
Willy Tarreau70060452015-12-14 12:46:07 +01002153 /* recompute the amount of per-process memory depending on nbproc and
2154 * the shared SSL cache size (allowed to exist in all processes).
2155 */
2156 if (global.rlimit_memmax_all) {
2157#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
2158 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
2159
2160 global.rlimit_memmax =
2161 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
2162 ssl_cache_bytes) / global.nbproc +
2163 ssl_cache_bytes + 1048575LL) / 1048576LL;
2164#else
2165 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
2166#endif
2167 }
2168
Willy Tarreaue5733232019-05-22 19:24:06 +02002169#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002170 err_code |= netns_init();
2171 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002172 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01002173 exit(1);
2174 }
2175#endif
2176
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002177 /* Apply server states */
2178 apply_server_state();
2179
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002180 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01002181 srv_compute_all_admin_states(px);
2182
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002183 /* Apply servers' configured address */
2184 err_code |= srv_init_addr();
2185 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002186 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01002187 exit(1);
2188 }
2189
Willy Tarreau3eb10b82020-04-15 16:42:39 +02002190 if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
2191 ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
2192 exit(1);
2193 }
2194
Willy Tarreaubaaee002006-06-26 02:48:02 +02002195 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002196 struct peers *pr;
2197 struct proxy *px;
2198
Willy Tarreaubebd2122020-04-15 16:06:11 +02002199 if (warned & WARN_ANY)
2200 qfprintf(stdout, "Warnings were found.\n");
2201
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002202 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002203 if (pr->peers_fe)
2204 break;
2205
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002206 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02002207 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002208 break;
2209
2210 if (pr || px) {
2211 /* At least one peer or one listener has been found */
2212 qfprintf(stdout, "Configuration file is valid\n");
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02002213 deinit_and_exit(0);
Willy Tarreau8b15ba12012-02-02 17:48:18 +01002214 }
2215 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
2216 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002217 }
Willy Tarreaue9b26022011-08-01 20:57:55 +02002218
Willy Tarreau8263d2b2012-08-28 00:06:31 +02002219 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02002220 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02002221
Willy Tarreaue6945732016-12-21 19:57:00 +01002222 list_for_each_entry(pcf, &post_check_list, list) {
2223 err_code |= pcf->fct();
2224 if (err_code & (ERR_ABORT|ERR_FATAL))
2225 exit(1);
2226 }
2227
Willy Tarreaubaaee002006-06-26 02:48:02 +02002228 if (cfg_maxconn > 0)
2229 global.maxconn = cfg_maxconn;
2230
Willy Tarreau8d687d82019-03-01 09:39:42 +01002231 if (global.stats_fe)
2232 global.maxsock += global.stats_fe->maxconn;
2233
2234 if (cfg_peers) {
2235 /* peers also need to bypass global maxconn */
2236 struct peers *p = cfg_peers;
2237
2238 for (p = cfg_peers; p; p = p->next)
2239 if (p->peers_fe)
2240 global.maxsock += p->peers_fe->maxconn;
2241 }
2242
Willy Tarreaubaaee002006-06-26 02:48:02 +02002243 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002244 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002245 global.pidfile = strdup(cfg_pidfile);
2246 }
2247
Willy Tarreaud0256482015-01-15 21:45:22 +01002248 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002249 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2250 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2251 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2252 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002253 *
2254 * If memmax is set, then it depends on which values are set. If
2255 * maxsslconn is set, we use memmax to determine how many cleartext
2256 * connections may be added, and set maxconn to the sum of the two.
2257 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2258 * the remaining amount of memory between memmax and the cleartext
2259 * connections. If neither are set, then it is considered that all
2260 * connections are SSL-capable, and maxconn is computed based on this,
2261 * then maxsslconn accordingly. We need to know if SSL is used on the
2262 * frontends, backends, or both, because when it's used on both sides,
2263 * we need twice the value for maxsslconn, but we only count the
2264 * handshake once since it is not performed on the two sides at the
2265 * same time (frontend-side is terminated before backend-side begins).
2266 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002267 * ssl_handshake_cost during its initialization. In any case, if
2268 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2269 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002270 */
Willy Tarreauac350932019-03-01 15:43:14 +01002271 ideal_maxconn = compute_ideal_maxconn();
2272
Willy Tarreaud0256482015-01-15 21:45:22 +01002273 if (!global.rlimit_memmax) {
2274 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002275 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002276 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2277 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2278 }
2279 }
2280#ifdef USE_OPENSSL
2281 else if (!global.maxconn && !global.maxsslconn &&
2282 (global.ssl_used_frontend || global.ssl_used_backend)) {
2283 /* memmax is set, compute everything automatically. Here we want
2284 * to ensure that all SSL connections will be served. We take
2285 * care of the number of sides where SSL is used, and consider
2286 * the worst case : SSL used on both sides and doing a handshake
2287 * simultaneously. Note that we can't have more than maxconn
2288 * handshakes at a time by definition, so for the worst case of
2289 * two SSL conns per connection, we count a single handshake.
2290 */
2291 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2292 int64_t mem = global.rlimit_memmax * 1048576ULL;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002293 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002294
2295 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2296 mem -= global.maxzlibmem;
2297 mem = mem * MEM_USABLE_RATIO;
2298
Willy Tarreau304e17e2020-03-10 17:54:54 +01002299 /* Principle: we test once to set maxconn according to the free
2300 * memory. If it results in values the system rejects, we try a
2301 * second time by respecting rlim_fd_max. If it fails again, we
2302 * go back to the initial value and will let the final code
2303 * dealing with rlimit report the error. That's up to 3 attempts.
2304 */
2305 do {
2306 global.maxconn = mem /
2307 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
2308 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2309 global.ssl_handshake_max_cost); // 1 handshake per connection max
Willy Tarreaud0256482015-01-15 21:45:22 +01002310
Willy Tarreau304e17e2020-03-10 17:54:54 +01002311 if (retried == 1)
2312 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2313 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002314#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002315 if (global.maxconn > SYSTEM_MAXCONN)
2316 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002317#endif /* SYSTEM_MAXCONN */
Willy Tarreau304e17e2020-03-10 17:54:54 +01002318 global.maxsslconn = sides * global.maxconn;
2319
2320 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2321 break;
2322 } while (retried++ < 2);
2323
Willy Tarreaud0256482015-01-15 21:45:22 +01002324 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2325 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2326 global.maxconn, global.maxsslconn);
2327 }
2328 else if (!global.maxsslconn &&
2329 (global.ssl_used_frontend || global.ssl_used_backend)) {
2330 /* memmax and maxconn are known, compute maxsslconn automatically.
2331 * maxsslconn being forced, we don't know how many of it will be
2332 * on each side if both sides are being used. The worst case is
2333 * when all connections use only one SSL instance because
2334 * handshakes may be on two sides at the same time.
2335 */
2336 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2337 int64_t mem = global.rlimit_memmax * 1048576ULL;
2338 int64_t sslmem;
2339
2340 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2341 mem -= global.maxzlibmem;
2342 mem = mem * MEM_USABLE_RATIO;
2343
Willy Tarreau87b09662015-04-03 00:22:06 +02002344 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002345 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2346 global.maxsslconn = round_2dig(global.maxsslconn);
2347
2348 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002349 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2350 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2351 "without SSL is %d, but %d was found and SSL is in use.\n",
2352 global.rlimit_memmax,
2353 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2354 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002355 exit(1);
2356 }
2357
2358 if (global.maxsslconn > sides * global.maxconn)
2359 global.maxsslconn = sides * global.maxconn;
2360
2361 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2362 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2363 }
2364#endif
2365 else if (!global.maxconn) {
2366 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2367 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2368 int64_t mem = global.rlimit_memmax * 1048576ULL;
2369 int64_t clearmem;
Willy Tarreau304e17e2020-03-10 17:54:54 +01002370 int retried = 0;
Willy Tarreaud0256482015-01-15 21:45:22 +01002371
2372 if (global.ssl_used_frontend || global.ssl_used_backend)
2373 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2374
2375 mem -= global.maxzlibmem;
2376 mem = mem * MEM_USABLE_RATIO;
2377
2378 clearmem = mem;
2379 if (sides)
2380 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2381
Willy Tarreau304e17e2020-03-10 17:54:54 +01002382 /* Principle: we test once to set maxconn according to the free
2383 * memory. If it results in values the system rejects, we try a
2384 * second time by respecting rlim_fd_max. If it fails again, we
2385 * go back to the initial value and will let the final code
2386 * dealing with rlimit report the error. That's up to 3 attempts.
2387 */
2388 do {
2389 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
2390 if (retried == 1)
2391 global.maxconn = MIN(global.maxconn, ideal_maxconn);
2392 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002393#ifdef SYSTEM_MAXCONN
Willy Tarreau304e17e2020-03-10 17:54:54 +01002394 if (global.maxconn > SYSTEM_MAXCONN)
2395 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002396#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002397
Willy Tarreau304e17e2020-03-10 17:54:54 +01002398 if (clearmem <= 0 || !global.maxconn) {
2399 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2400 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2401 "is %d, but %d was found.\n",
2402 global.rlimit_memmax,
Christopher Faulet767a84b2017-11-24 16:50:31 +01002403 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
Willy Tarreau304e17e2020-03-10 17:54:54 +01002404 global.maxsslconn);
2405 exit(1);
2406 }
2407
2408 if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
2409 break;
2410 } while (retried++ < 2);
Willy Tarreaud0256482015-01-15 21:45:22 +01002411
2412 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2413 if (sides && global.maxsslconn > sides * global.maxconn) {
2414 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2415 "to be limited to %d. Better reduce global.maxsslconn to get more "
2416 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2417 }
2418 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2419 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002420 }
2421
Willy Tarreaua409f302020-03-10 17:08:53 +01002422 global.maxsock = compute_ideal_maxsock(global.maxconn);
2423 global.hardmaxconn = global.maxconn;
Willy Tarreaua4818db2020-06-19 16:20:59 +02002424 if (!global.maxpipes)
2425 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002426
Olivier Houchard88698d92019-04-16 19:07:22 +02002427 /* update connection pool thresholds */
2428 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2429 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2430
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002431 proxy_adjust_all_maxconn();
2432
Willy Tarreau1db37712007-06-03 17:16:49 +02002433 if (global.tune.maxpollevents <= 0)
2434 global.tune.maxpollevents = MAX_POLL_EVENTS;
2435
Olivier Houchard1599b802018-05-24 18:59:04 +02002436 if (global.tune.runqueue_depth <= 0)
2437 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2438
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002439 if (global.tune.recv_enough == 0)
2440 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2441
Willy Tarreau27a674e2009-08-17 07:23:33 +02002442 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2443 global.tune.maxrewrite = global.tune.bufsize / 2;
2444
Willy Tarreaubaaee002006-06-26 02:48:02 +02002445 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2446 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002447 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002448 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2449 }
2450
William Lallemand095ba4c2017-06-01 17:38:50 +02002451 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002452 /* command line daemon mode inhibits foreground and debug modes mode */
2453 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002454 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002455 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002456
2457 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002458
William Lallemand095ba4c2017-06-01 17:38:50 +02002459 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002460 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002461 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002462 }
2463
William Lallemand095ba4c2017-06-01 17:38:50 +02002464 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002465 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002466 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 +02002467 global.nbproc = 1;
2468 }
2469
2470 if (global.nbproc < 1)
2471 global.nbproc = 1;
2472
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002473 if (global.nbthread < 1)
2474 global.nbthread = 1;
2475
Christopher Faulet3ef26392017-08-29 16:46:57 +02002476 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002477 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002478 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002479 exit(1);
2480 }
2481
Christopher Faulet96d44832017-11-14 22:02:30 +01002482 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002483 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002484 exit(1);
2485 }
2486
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002487 /*
2488 * Note: we could register external pollers here.
2489 * Built-in pollers have been registered before main().
2490 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002491
Willy Tarreau43b78992009-01-25 15:42:27 +01002492 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002493 disable_poller("kqueue");
2494
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002495 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2496 disable_poller("evports");
2497
Willy Tarreau43b78992009-01-25 15:42:27 +01002498 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002499 disable_poller("epoll");
2500
Willy Tarreau43b78992009-01-25 15:42:27 +01002501 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002502 disable_poller("poll");
2503
Willy Tarreau43b78992009-01-25 15:42:27 +01002504 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002505 disable_poller("select");
2506
2507 /* Note: we could disable any poller by name here */
2508
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002509 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002510 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002511 fprintf(stderr, "\n");
2512 list_filters(stderr);
2513 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002514
Willy Tarreau4f60f162007-04-08 16:39:58 +02002515 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002516 ha_alert("No polling mechanism available.\n"
2517 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2518 " is too low on this platform to support maxconn and the number of listeners\n"
2519 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2520 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2521 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2522 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2523 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2524 " check build settings using 'haproxy -vv'.\n\n",
2525 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002526 exit(1);
2527 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002528 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2529 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002530 }
2531
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002532 if (!global.node)
2533 global.node = strdup(hostname);
2534
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002535 if (!hlua_post_init())
2536 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002537
Maxime de Roucy0f503922016-05-13 23:52:55 +02002538 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002539}
2540
Simon Horman6fb82592011-07-15 13:14:11 +09002541static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002542{
Simon Hormanac821422011-07-15 13:14:09 +09002543 struct acl_term_suite *suite, *suiteb;
2544 struct acl_term *term, *termb;
2545
Simon Horman6fb82592011-07-15 13:14:11 +09002546 if (!cond)
2547 return;
2548
2549 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2550 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2551 LIST_DEL(&term->list);
2552 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002553 }
Simon Horman6fb82592011-07-15 13:14:11 +09002554 LIST_DEL(&suite->list);
2555 free(suite);
2556 }
2557
2558 free(cond);
2559}
2560
Christopher Fauletcb550132019-12-17 11:25:46 +01002561static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002562{
Christopher Fauletcb550132019-12-17 11:25:46 +01002563 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002564
Christopher Fauletcb550132019-12-17 11:25:46 +01002565 list_for_each_entry_safe(rule, ruleb, rules, list) {
2566 LIST_DEL(&rule->list);
2567 deinit_acl_cond(rule->cond);
Christopher Faulet58b35642019-12-17 11:48:42 +01002568 if (rule->release_ptr)
2569 rule->release_ptr(rule);
Christopher Fauletcb550132019-12-17 11:25:46 +01002570 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002571 }
2572}
2573
Simon Horman6fb82592011-07-15 13:14:11 +09002574static void deinit_stick_rules(struct list *rules)
2575{
2576 struct sticking_rule *rule, *ruleb;
2577
2578 list_for_each_entry_safe(rule, ruleb, rules, list) {
2579 LIST_DEL(&rule->list);
2580 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002581 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002582 free(rule);
2583 }
2584}
2585
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002586void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002587{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002588 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002589 struct cap_hdr *h,*h_next;
2590 struct server *s,*s_next;
2591 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002592 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002593 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002594 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002595 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002596 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002597 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002598 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002599 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002600 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002601 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002602 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002603 struct post_deinit_fct *pdf;
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002604 struct proxy_deinit_fct *pxdf;
2605 struct server_deinit_fct *srvdf;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002606
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002607 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002608 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002609 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002610 free(p->id);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002611 free(p->cookie_name);
2612 free(p->cookie_domain);
Christopher Faulet2f533902020-01-21 11:06:48 +01002613 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002614 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002615 free(p->capture_name);
2616 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002617 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002618 if (p->conf.logformat_string != default_http_log_format &&
2619 p->conf.logformat_string != default_tcp_log_format &&
2620 p->conf.logformat_string != clf_http_log_format)
2621 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002622
Willy Tarreau62a61232013-04-12 18:13:46 +02002623 free(p->conf.lfs_file);
2624 free(p->conf.uniqueid_format_string);
2625 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002626 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2627 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002628
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002629 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2630 free(p->conf.logformat_sd_string);
2631 free(p->conf.lfsd_file);
2632
Willy Tarreaub80c2302007-11-30 20:51:32 +01002633 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2634 LIST_DEL(&cond->list);
2635 prune_acl_cond(cond);
2636 free(cond);
2637 }
2638
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002639 /* build a list of unique uri_auths */
2640 if (!ua)
2641 ua = p->uri_auth;
2642 else {
2643 /* check if p->uri_auth is unique */
2644 for (uap = ua; uap; uap=uap->next)
2645 if (uap == p->uri_auth)
2646 break;
2647
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002648 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002649 /* add it, if it is */
2650 p->uri_auth->next = ua;
2651 ua = p->uri_auth;
2652 }
2653 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002654
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002655 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2656 LIST_DEL(&acl->list);
2657 prune_acl(acl);
2658 free(acl);
2659 }
2660
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002661 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2662 LIST_DEL(&srule->list);
2663 prune_acl_cond(srule->cond);
2664 free(srule->cond);
2665 free(srule);
2666 }
2667
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002668 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2669 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002670 if (rule->cond) {
2671 prune_acl_cond(rule->cond);
2672 free(rule->cond);
2673 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002674 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002675 free(rule);
2676 }
2677
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002678 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2679 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002680 if (rdr->cond) {
2681 prune_acl_cond(rdr->cond);
2682 free(rdr->cond);
2683 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002684 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002685 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2686 LIST_DEL(&lf->list);
2687 free(lf);
2688 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002689 free(rdr);
2690 }
2691
William Lallemand0f99e342011-10-12 17:50:54 +02002692 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2693 LIST_DEL(&log->list);
2694 free(log);
2695 }
2696
William Lallemand723b73a2012-02-08 16:37:49 +01002697 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2698 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002699 release_sample_expr(lf->expr);
2700 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002701 free(lf);
2702 }
2703
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002704 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2705 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002706 release_sample_expr(lf->expr);
2707 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002708 free(lf);
2709 }
2710
Christopher Fauletcb550132019-12-17 11:25:46 +01002711 deinit_act_rules(&p->tcp_req.inspect_rules);
2712 deinit_act_rules(&p->tcp_rep.inspect_rules);
2713 deinit_act_rules(&p->tcp_req.l4_rules);
2714 deinit_act_rules(&p->tcp_req.l5_rules);
2715 deinit_act_rules(&p->http_req_rules);
2716 deinit_act_rules(&p->http_res_rules);
Christopher Faulet6d0c3df2020-01-22 09:26:35 +01002717 deinit_act_rules(&p->http_after_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002718
Simon Horman6fb82592011-07-15 13:14:11 +09002719 deinit_stick_rules(&p->storersp_rules);
2720 deinit_stick_rules(&p->sticking_rules);
2721
Willy Tarreaubaaee002006-06-26 02:48:02 +02002722 h = p->req_cap;
2723 while (h) {
2724 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002725 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002726 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002727 free(h);
2728 h = h_next;
2729 }/* end while(h) */
2730
2731 h = p->rsp_cap;
2732 while (h) {
2733 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002734 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002735 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002736 free(h);
2737 h = h_next;
2738 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002739
Willy Tarreaubaaee002006-06-26 02:48:02 +02002740 s = p->srv;
2741 while (s) {
2742 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002743
Dragan Dosen026ef572019-04-30 00:56:20 +02002744
Willy Tarreauf6562792019-05-07 19:05:35 +02002745 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002746
Willy Tarreaua534fea2008-08-03 12:19:50 +02002747 free(s->id);
2748 free(s->cookie);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002749 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002750 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002751 free(s->idle_conns);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002752 free(s->safe_conns);
Olivier Houcharddc2f2752020-02-13 19:12:07 +01002753 free(s->available_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002754 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002755
Christopher Fauletf61f33a2020-03-27 18:55:49 +01002756 if (s->use_ssl == 1 || s->check.use_ssl == 1 || (s->proxy->options & PR_O_TCPCHK_SSL)) {
Willy Tarreau17d45382016-12-22 21:16:08 +01002757 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2758 xprt_get(XPRT_SSL)->destroy_srv(s);
2759 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002760 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002761
2762 list_for_each_entry(srvdf, &server_deinit_list, list)
2763 srvdf->fct(s);
2764
Willy Tarreaubaaee002006-06-26 02:48:02 +02002765 free(s);
2766 s = s_next;
2767 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002768
Willy Tarreau4348fad2012-09-20 16:48:07 +02002769 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002770 /*
2771 * Zombie proxy, the listener just pretend to be up
2772 * because they still hold an opened fd.
2773 * Close it and give the listener its real state.
2774 */
2775 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2776 close(l->fd);
2777 l->state = LI_INIT;
2778 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002779 unbind_listener(l);
2780 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002781 LIST_DEL(&l->by_fe);
2782 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002783 free(l->name);
2784 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002785 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002786 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002787
Willy Tarreau4348fad2012-09-20 16:48:07 +02002788 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002789 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002790 if (bind_conf->xprt->destroy_bind_conf)
2791 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002792 free(bind_conf->file);
2793 free(bind_conf->arg);
2794 LIST_DEL(&bind_conf->by_fe);
2795 free(bind_conf);
2796 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002797
Christopher Fauletd7c91962015-04-30 11:48:27 +02002798 flt_deinit(p);
2799
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002800 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2801 pxdf->fct(p);
2802
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002803 free(p->desc);
2804 free(p->fwdfor_hdr_name);
2805
Olivier Houchard3f795f72019-04-17 22:51:06 +02002806 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002807
Willy Tarreaubafbe012017-11-24 17:34:44 +01002808 pool_destroy(p->req_cap_pool);
2809 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002810 if (p->table)
2811 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002812
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002813 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002814 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002815 HA_SPIN_DESTROY(&p0->lbprm.lock);
2816 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002817 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002818 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002819
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002820 while (ua) {
2821 uap = ua;
2822 ua = ua->next;
2823
Willy Tarreaua534fea2008-08-03 12:19:50 +02002824 free(uap->uri_prefix);
2825 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002826 free(uap->node);
2827 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002828
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002829 userlist_free(uap->userlist);
Christopher Fauletcb550132019-12-17 11:25:46 +01002830 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002831
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002832 free(uap);
2833 }
2834
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002835 userlist_free(userlist);
2836
David Carlier834cb2e2015-09-25 12:02:25 +01002837 cfg_unregister_sections();
2838
Christopher Faulet0132d062017-07-26 15:33:35 +02002839 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002840
Willy Tarreaudd815982007-10-16 12:25:14 +02002841 protocol_unbind_all();
2842
Willy Tarreau05554e62016-12-21 20:46:26 +01002843 list_for_each_entry(pdf, &post_deinit_list, list)
2844 pdf->fct();
2845
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002846 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002847 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002848 free(global.chroot); global.chroot = NULL;
2849 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002850 free(global.node); global.node = NULL;
2851 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002852 free(oldpids); oldpids = NULL;
Dragan Dosen4f014152020-06-18 16:56:47 +02002853 free(localpeer); localpeer = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002854 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002855 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002856
William Lallemand0f99e342011-10-12 17:50:54 +02002857 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2858 LIST_DEL(&log->list);
2859 free(log);
2860 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002861 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002862 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002863 LIST_DEL(&wl->list);
2864 free(wl);
2865 }
2866
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002867 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2868 if (bol->must_free)
2869 free((void *)bol->str);
2870 LIST_DEL(&bol->list);
2871 free(bol);
2872 }
2873
Christopher Fauletff2613e2016-11-09 11:36:17 +01002874 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002875 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002876 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002877} /* end deinit() */
2878
Willy Tarreauf3ca5a02020-06-15 18:43:46 +02002879__attribute__((noreturn)) void deinit_and_exit(int status)
Tim Duesterhus26540552020-06-14 00:37:41 +02002880{
2881 deinit();
2882 exit(status);
2883}
William Lallemand72160322018-11-06 17:37:16 +01002884
Willy Tarreau918ff602011-07-25 16:33:49 +02002885/* Runs the polling loop */
Willy Tarreau3ebd55e2020-03-03 14:59:56 +01002886void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002887{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002888 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002889
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002890 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002891 while (1) {
Willy Tarreauc49ba522019-12-11 08:12:23 +01002892 wake_expired_tasks();
2893
William Lallemand1aab50b2018-06-07 09:46:01 +02002894 /* check if we caught some signals and process them in the
2895 first thread */
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002896 if (signal_queue_len && tid == 0) {
2897 activity[tid].wake_signal++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002898 signal_process_queue();
Willy Tarreaua7ad4ae2020-06-19 12:06:34 +02002899 }
2900
2901 /* Process a few tasks */
2902 process_runnable_tasks();
Willy Tarreau29857942009-05-10 09:01:21 +02002903
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002904 /* also stop if we failed to cleanly stop all tasks */
2905 if (killed > 1)
2906 break;
2907
Willy Tarreau10146c92015-04-13 20:44:19 +02002908 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002909 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002910 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002911 activity[tid].wake_tasks++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002912 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002913 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2914 __ha_barrier_atomic_store();
Willy Tarreau95abd5b2020-03-23 09:33:32 +01002915 if (thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002916 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002917 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002918 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002919 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002920 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002921
Willy Tarreau4f46a352020-03-23 09:27:28 +01002922 if (!wake) {
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002923 int i;
2924
2925 if (stopping) {
Willy Tarreaud6455742020-05-13 14:30:25 +02002926 if (_HA_ATOMIC_OR(&stopping_thread_mask, tid_bit) == tid_bit) {
2927 /* notify all threads that stopping was just set */
2928 for (i = 0; i < global.nbthread; i++)
Willy Tarreau369a2ef2020-06-29 19:23:19 +02002929 if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
Willy Tarreaud6455742020-05-13 14:30:25 +02002930 wake_thread(i);
2931 }
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002932 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002933
2934 /* stop when there's nothing left to do */
2935 if ((jobs - unstoppable_jobs) == 0 &&
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002936 (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
2937 /* wake all threads waiting on jobs==0 */
2938 for (i = 0; i < global.nbthread; i++)
2939 if (((all_threads_mask & ~tid_bit) >> i) & 1)
2940 wake_thread(i);
Willy Tarreau4f46a352020-03-23 09:27:28 +01002941 break;
Willy Tarreaud7a6b2f2020-05-13 13:51:01 +02002942 }
Willy Tarreau4f46a352020-03-23 09:27:28 +01002943 }
2944
Willy Tarreauc49ba522019-12-11 08:12:23 +01002945 /* If we have to sleep, measure how long */
2946 next = wake ? TICK_ETERNITY : next_timer_expiry();
2947
Willy Tarreau58b458d2008-06-29 22:40:23 +02002948 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002949 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002950
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002951 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002952 }
2953}
2954
Christopher Faulet1d17c102017-08-29 15:38:48 +02002955static void *run_thread_poll_loop(void *data)
2956{
Willy Tarreau082b6282019-05-22 14:42:12 +02002957 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002958 struct per_thread_init_fct *ptif;
2959 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002960 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002961 static int init_left = 0;
Willy Tarreauaf613e82020-06-05 08:40:51 +02002962 __decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2963 __decl_thread(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002964
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002965 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002966 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002967
Willy Tarreauf6178242019-05-21 19:46:58 +02002968#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002969#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002970 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002971#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002972 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002973#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002974#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002975 /* Now, initialize one thread init at a time. This is better since
2976 * some init code is a bit tricky and may release global resources
2977 * after reallocating them locally. This will also ensure there is
2978 * no race on file descriptors allocation.
2979 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002980#ifdef USE_THREAD
2981 pthread_mutex_lock(&init_mutex);
2982#endif
2983 /* The first thread must set the number of threads left */
2984 if (!init_left)
2985 init_left = global.nbthread;
2986 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002987
Christopher Faulet1d17c102017-08-29 15:38:48 +02002988 tv_update_date(-1,-1);
2989
Willy Tarreau082b6282019-05-22 14:42:12 +02002990 /* per-thread alloc calls performed here are not allowed to snoop on
2991 * other threads, so they are free to initialize at their own rhythm
2992 * as long as they act as if they were alone. None of them may rely
2993 * on resources initialized by the other ones.
2994 */
2995 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2996 if (!ptaf->fct()) {
2997 ha_alert("failed to allocate resources for thread %u.\n", tid);
2998 exit(1);
2999 }
3000 }
3001
Willy Tarreau3078e9f2019-05-20 10:50:43 +02003002 /* per-thread init calls performed here are not allowed to snoop on
3003 * other threads, so they are free to initialize at their own rhythm
3004 * as long as they act as if they were alone.
3005 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003006 list_for_each_entry(ptif, &per_thread_init_list, list) {
3007 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003008 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003009 exit(1);
3010 }
3011 }
3012
Willy Tarreau71092822019-06-10 09:51:04 +02003013 /* enabling protocols will result in fd_insert() calls to be performed,
3014 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02003015 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02003016 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02003017 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02003018 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02003019
Willy Tarreau34a150c2019-06-11 09:16:41 +02003020#ifdef USE_THREAD
3021 pthread_cond_broadcast(&init_cond);
3022 pthread_mutex_unlock(&init_mutex);
3023
3024 /* now wait for other threads to finish starting */
3025 pthread_mutex_lock(&init_mutex);
3026 while (init_left)
3027 pthread_cond_wait(&init_cond, &init_mutex);
3028 pthread_mutex_unlock(&init_mutex);
3029#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02003030
Willy Tarreaua45a8b52019-12-06 16:31:45 +01003031#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
3032 /* Let's refrain from using setuid executables. This way the impact of
3033 * an eventual vulnerability in a library remains limited. It may
3034 * impact external checks but who cares about them anyway ? In the
3035 * worst case it's possible to disable the option. Obviously we do this
3036 * in workers only. We can't hard-fail on this one as it really is
3037 * implementation dependent though we're interested in feedback, hence
3038 * the warning.
3039 */
3040 if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
3041 static int warn_fail;
3042 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3043 ha_warning("Failed to disable setuid, please report to developers with detailed "
3044 "information about your operating system. You can silence this warning "
3045 "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
3046 }
3047 }
3048#endif
3049
Willy Tarreaud96f1122019-12-03 07:07:36 +01003050#if defined(RLIMIT_NPROC)
3051 /* all threads have started, it's now time to prevent any new thread
3052 * or process from starting. Obviously we do this in workers only. We
3053 * can't hard-fail on this one as it really is implementation dependent
3054 * though we're interested in feedback, hence the warning.
3055 */
3056 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
3057 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
3058 static int warn_fail;
3059
3060 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
3061 ha_warning("Failed to disable forks, please report to developers with detailed "
3062 "information about your operating system. You can silence this warning "
3063 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
3064 }
3065 }
3066#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003067 run_poll_loop();
3068
3069 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
3070 ptdf->fct();
3071
Willy Tarreau082b6282019-05-22 14:42:12 +02003072 list_for_each_entry(ptff, &per_thread_free_list, list)
3073 ptff->fct();
3074
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003075#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01003076 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003077 if (tid > 0)
3078 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003079#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003080 return NULL;
3081}
Christopher Faulet1d17c102017-08-29 15:38:48 +02003082
William Dauchyf9af9d72019-11-17 15:47:16 +01003083/* set uid/gid depending on global settings */
3084static void set_identity(const char *program_name)
3085{
3086 if (global.gid) {
3087 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
3088 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3089 " without 'uid'/'user' is generally useless.\n", program_name);
3090
3091 if (setgid(global.gid) == -1) {
3092 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
3093 protocol_unbind_all();
3094 exit(1);
3095 }
3096 }
3097
3098 if (global.uid && setuid(global.uid) == -1) {
3099 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
3100 protocol_unbind_all();
3101 exit(1);
3102 }
3103}
3104
Willy Tarreaubaaee002006-06-26 02:48:02 +02003105int main(int argc, char **argv)
3106{
3107 int err, retry;
3108 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02003109 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02003110 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003111
Olivier Houchard5fa300d2018-02-03 15:15:21 +01003112 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01003113
Willy Tarreauff9c9142019-02-07 10:39:36 +01003114 /* this can only safely be done here, though it's optimized away by
3115 * the compiler.
3116 */
3117 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
3118 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
3119 "HAProxy was built with value %d, please fix it and rebuild.\n",
3120 LONGBITS, MAX_PROCS);
3121 exit(1);
3122 }
3123
Willy Tarreaubf696402019-03-01 10:09:28 +01003124 /* take a copy of initial limits before we possibly change them */
3125 getrlimit(RLIMIT_NOFILE, &limit);
3126 rlim_fd_cur_at_boot = limit.rlim_cur;
3127 rlim_fd_max_at_boot = limit.rlim_max;
3128
Willy Tarreau5794fb02018-11-25 18:43:29 +01003129 /* process all initcalls in order of potential dependency */
3130 RUN_INITCALLS(STG_PREPARE);
3131 RUN_INITCALLS(STG_LOCK);
3132 RUN_INITCALLS(STG_ALLOC);
3133 RUN_INITCALLS(STG_POOL);
3134 RUN_INITCALLS(STG_REGISTER);
3135 RUN_INITCALLS(STG_INIT);
3136
Emeric Bruncf20bf12010-10-22 16:06:11 +02003137 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003138 signal_register_fct(SIGQUIT, dump, SIGQUIT);
3139 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
3140 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02003141 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003142
Willy Tarreaue437c442010-03-17 18:02:46 +01003143 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
3144 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
3145 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02003146 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003147 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003148
Willy Tarreaudc23a922011-02-16 11:10:36 +01003149 /* ulimits */
3150 if (!global.rlimit_nofile)
3151 global.rlimit_nofile = global.maxsock;
3152
3153 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01003154 limit.rlim_cur = global.rlimit_nofile;
3155 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
3156
Willy Tarreaudc23a922011-02-16 11:10:36 +01003157 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02003158 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01003159 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3160 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
3161 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3162 if (!(global.mode & MODE_MWORKER))
3163 exit(1);
3164 }
3165 else {
3166 /* try to set it to the max possible at least */
3167 limit.rlim_cur = limit.rlim_max;
3168 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
3169 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02003170
William Dauchy0fec3ab2019-10-27 20:08:11 +01003171 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d. "
3172 "This will fail in >= v2.3\n",
3173 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
3174 global.rlimit_nofile = limit.rlim_cur;
3175 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01003176 }
3177 }
3178
3179 if (global.rlimit_memmax) {
3180 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01003181 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01003182#ifdef RLIMIT_AS
3183 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003184 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3185 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3186 argv[0], global.rlimit_memmax);
3187 if (!(global.mode & MODE_MWORKER))
3188 exit(1);
3189 }
3190 else
3191 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs."
3192 "This will fail in >= v2.3\n",
3193 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003194 }
3195#else
3196 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003197 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3198 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
3199 argv[0], global.rlimit_memmax);
3200 if (!(global.mode & MODE_MWORKER))
3201 exit(1);
3202 }
3203 else
3204 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.",
3205 "This will fail in >= v2.3\n",
3206 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01003207 }
3208#endif
3209 }
3210
Olivier Houchardf73629d2017-04-05 22:33:04 +02003211 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02003212 if (strcmp("/dev/null", old_unixsocket) != 0) {
3213 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003214 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02003215 if (!(global.mode & MODE_MWORKER))
3216 exit(1);
3217 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003218 }
3219 }
William Lallemand85b0bd92017-06-01 17:38:53 +02003220 get_cur_unixsocket();
3221
Willy Tarreaubaaee002006-06-26 02:48:02 +02003222 /* We will loop at most 100 times with 10 ms delay each time.
3223 * That's at most 1 second. We only send a signal to old pids
3224 * if we cannot grab at least one port.
3225 */
3226 retry = MAX_START_RETRIES;
3227 err = ERR_NONE;
3228 while (retry >= 0) {
3229 struct timeval w;
3230 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01003231 /* exit the loop on no error or fatal error */
3232 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003233 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02003234 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02003235 break;
3236
3237 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
3238 * listening sockets. So on those platforms, it would be wiser to
3239 * simply send SIGUSR1, which will not be undoable.
3240 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02003241 if (tell_old_pids(SIGTTOU) == 0) {
3242 /* no need to wait if we can't contact old pids */
3243 retry = 0;
3244 continue;
3245 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003246 /* give some time to old processes to stop listening */
3247 w.tv_sec = 0;
3248 w.tv_usec = 10*1000;
3249 select(0, NULL, NULL, NULL, &w);
3250 retry--;
3251 }
3252
3253 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01003254 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02003255 if (retry != MAX_START_RETRIES && nb_oldpids) {
3256 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003257 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02003258 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003259 exit(1);
3260 }
3261
William Lallemand944e6192018-11-21 15:48:31 +01003262 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003263 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003264 /* Note: we don't have to send anything to the old pids because we
3265 * never stopped them. */
3266 exit(1);
3267 }
3268
Emeric Bruncf20bf12010-10-22 16:06:11 +02003269 err = protocol_bind_all(errmsg, sizeof(errmsg));
3270 if ((err & ~ERR_WARN) != ERR_NONE) {
3271 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01003272 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02003273
Christopher Faulet767a84b2017-11-24 16:50:31 +01003274 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003275 protocol_unbind_all(); /* cleanup everything we can */
3276 if (nb_oldpids)
3277 tell_old_pids(SIGTTIN);
3278 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02003279 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003280 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02003281 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003282 /* Ok, all listener should now be bound, close any leftover sockets
3283 * the previous process gave us, we don't need them anymore
3284 */
3285 while (xfer_sock_list != NULL) {
3286 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3287 close(xfer_sock_list->fd);
3288 free(xfer_sock_list->iface);
3289 free(xfer_sock_list->namespace);
3290 free(xfer_sock_list);
3291 xfer_sock_list = tmpxfer;
3292 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003293
Willy Tarreaubaaee002006-06-26 02:48:02 +02003294 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003295 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3296 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003297
Willy Tarreaubaaee002006-06-26 02:48:02 +02003298 /* MODE_QUIET can inhibit alerts and warnings below this line */
3299
PiBa-NL149a81a2017-12-25 21:03:31 +01003300 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3301 /* either stdin/out/err are already closed or should stay as they are. */
3302 if ((global.mode & MODE_DAEMON)) {
3303 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3304 global.mode &= ~MODE_VERBOSE;
3305 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3306 }
3307 } else {
3308 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3309 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003310 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003311 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003312 }
3313
3314 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003315 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003316 unlink(global.pidfile);
3317 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3318 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003319 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003320 if (nb_oldpids)
3321 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003322 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003323 exit(1);
3324 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003325 }
3326
Willy Tarreaub38651a2007-03-24 17:24:39 +01003327 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003328 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3329 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003330 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003331 exit(1);
3332 }
3333
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003334 /* If the user is not root, we'll still let him try the configuration
3335 * but we inform him that unexpected behaviour may occur.
3336 */
3337 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003338 ha_warning("[%s.main()] Some options which require full privileges"
3339 " might not work well.\n"
3340 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003341
William Lallemand095ba4c2017-06-01 17:38:50 +02003342 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3343
3344 /* chroot if needed */
3345 if (global.chroot != NULL) {
3346 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003347 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003348 if (nb_oldpids)
3349 tell_old_pids(SIGTTIN);
3350 protocol_unbind_all();
3351 exit(1);
3352 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003353 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003354 }
3355
William Lallemand944e6192018-11-21 15:48:31 +01003356 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003357 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003358
William Lallemand27edc4b2019-05-07 17:49:33 +02003359 /* send a SIGTERM to workers who have a too high reloads number */
3360 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3361 mworker_kill_max_reloads(SIGTERM);
3362
William Lallemand8a361b52017-06-20 11:20:33 +02003363 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3364 nb_oldpids = 0;
3365 free(oldpids);
3366 oldpids = NULL;
3367 }
3368
3369
Willy Tarreaubaaee002006-06-26 02:48:02 +02003370 /* Note that any error at this stage will be fatal because we will not
3371 * be able to restart the old pids.
3372 */
3373
William Dauchyf9af9d72019-11-17 15:47:16 +01003374 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3375 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003376
Willy Tarreaubaaee002006-06-26 02:48:02 +02003377 /* check ulimits */
3378 limit.rlim_cur = limit.rlim_max = 0;
3379 getrlimit(RLIMIT_NOFILE, &limit);
3380 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003381 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3382 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3383 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3384 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3385 global.maxsock);
3386 if (!(global.mode & MODE_MWORKER))
3387 exit(1);
3388 }
3389 else
3390 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3391 "Please raise 'ulimit-n' to %d or more to avoid any trouble."
3392 "This will fail in >= v2.3\n",
3393 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3394 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003395 }
3396
William Lallemand944e6192018-11-21 15:48:31 +01003397 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003398 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003399 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003400 int ret = 0;
3401 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003402 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003403
William Lallemand095ba4c2017-06-01 17:38:50 +02003404 /*
3405 * if daemon + mworker: must fork here to let a master
3406 * process live in background before forking children
3407 */
William Lallemand73b85e72017-06-01 17:38:51 +02003408
3409 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3410 && (global.mode & MODE_MWORKER)
3411 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003412 ret = fork();
3413 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003414 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003415 protocol_unbind_all();
3416 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003417 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003418 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003419 } else /* change the process group ID in the child (master process) */
3420 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003421 }
William Lallemande20b6a62017-06-01 17:38:55 +02003422
William Lallemande20b6a62017-06-01 17:38:55 +02003423
William Lallemanddeed7802017-11-06 11:00:04 +01003424 /* if in master-worker mode, write the PID of the father */
3425 if (global.mode & MODE_MWORKER) {
3426 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003427 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003428 if (pidfd >= 0)
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003429 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003430 }
3431
Willy Tarreaubaaee002006-06-26 02:48:02 +02003432 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003433 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003434 if (global.mode & MODE_MWORKER)
3435 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003436 for (proc = 0; proc < global.nbproc; proc++) {
3437 ret = fork();
3438 if (ret < 0) {
3439 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3440 protocol_unbind_all();
3441 exit(1); /* there has been an error */
3442 }
Willy Tarreau52bf8392020-03-08 00:42:37 +01003443 else if (ret == 0) { /* child breaks here */
3444 ha_random_jump96(relative_pid);
William Lallemand944e6192018-11-21 15:48:31 +01003445 break;
Willy Tarreau52bf8392020-03-08 00:42:37 +01003446 }
William Lallemand944e6192018-11-21 15:48:31 +01003447 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3448 char pidstr[100];
3449 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau2e8ab6b2020-03-14 11:03:20 +01003450 DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
William Lallemand944e6192018-11-21 15:48:31 +01003451 }
3452 if (global.mode & MODE_MWORKER) {
3453 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003454
William Lallemand220567e2018-11-21 18:04:53 +01003455 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003456 /* find the right mworker_proc */
3457 list_for_each_entry(child, &proc_list, list) {
3458 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003459 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003460 child->timestamp = now.tv_sec;
3461 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003462 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003463 break;
3464 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003465 }
3466 }
William Lallemandbc193052018-09-11 10:06:26 +02003467
William Lallemand944e6192018-11-21 15:48:31 +01003468 relative_pid++; /* each child will get a different one */
3469 pid_bit <<= 1;
3470 }
3471 } else {
3472 /* wait mode */
3473 global.nbproc = 1;
3474 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003475 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003476
3477#ifdef USE_CPU_AFFINITY
3478 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003479 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003480 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003481#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003482 {
3483 cpuset_t cpuset;
3484 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003485 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003486
3487 CPU_ZERO(&cpuset);
3488 while ((i = ffsl(cpu_map)) > 0) {
3489 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003490 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003491 }
3492 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3493 }
David Carlier5e4c8e22019-09-13 05:12:58 +01003494#elif defined(__linux__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003495 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003496#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003497#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003498 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003499 if (pidfd >= 0) {
3500 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3501 close(pidfd);
3502 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003503
3504 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003505 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003506
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003507 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003508 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003509
3510 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3511 (global.mode & MODE_DAEMON)) {
3512 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003513 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3514 stdio_quiet(-1);
3515
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003516 global.mode &= ~MODE_VERBOSE;
3517 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003518 }
3519
William Lallemandb3f2be32018-09-11 10:06:18 +02003520 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003521 /* should never get there */
3522 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003523 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003524#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003525 ssl_free_dh();
3526#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003527 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003528 }
3529
William Lallemandcb11fd22017-06-01 17:38:52 +02003530 /* child must never use the atexit function */
3531 atexit_flag = 0;
3532
William Lallemandbc193052018-09-11 10:06:26 +02003533 /* close useless master sockets */
3534 if (global.mode & MODE_MWORKER) {
3535 struct mworker_proc *child, *it;
3536 master = 0;
3537
William Lallemand309dc9a2018-10-26 14:47:45 +02003538 mworker_cli_proxy_stop();
3539
William Lallemandbc193052018-09-11 10:06:26 +02003540 /* free proc struct of other processes */
3541 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003542 /* close the FD of the master side for all
3543 * workers, we don't need to close the worker
3544 * side of other workers since it's done with
3545 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003546 if (child->ipc_fd[0] >= 0)
3547 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003548 if (child->relative_pid == relative_pid &&
3549 child->reloads == 0) {
3550 /* keep this struct if this is our pid */
3551 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003552 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003553 }
William Lallemandbc193052018-09-11 10:06:26 +02003554 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003555 mworker_free_child(child);
3556 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003557 }
3558 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003559
William Lallemande1340412017-12-28 16:09:36 +01003560 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3561 devnullfd = open("/dev/null", O_RDWR, 0);
3562 if (devnullfd < 0) {
3563 ha_alert("Cannot open /dev/null\n");
3564 exit(EXIT_FAILURE);
3565 }
3566 }
3567
William Lallemand095ba4c2017-06-01 17:38:50 +02003568 /* Must chroot and setgid/setuid in the children */
3569 /* chroot if needed */
3570 if (global.chroot != NULL) {
3571 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003572 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003573 if (nb_oldpids)
3574 tell_old_pids(SIGTTIN);
3575 protocol_unbind_all();
3576 exit(1);
3577 }
3578 }
3579
3580 free(global.chroot);
3581 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003582 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003583
William Lallemand7f80eb22017-05-26 18:19:55 +02003584 /* pass through every cli socket, and check if it's bound to
3585 * the current process and if it exposes listeners sockets.
3586 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3587 * */
3588
3589 if (global.stats_fe) {
3590 struct bind_conf *bind_conf;
3591
3592 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3593 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3594 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3595 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3596 break;
3597 }
3598 }
3599 }
3600 }
3601
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003602 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003603 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003604 while (px != NULL) {
3605 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003606 if (!(px->bind_proc & (1UL << proc))) {
3607 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3608 zombify_proxy(px);
3609 else
3610 stop_proxy(px);
3611 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003612 }
3613 px = px->next;
3614 }
3615
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003616 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003617 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003618 if (!curpeers->peers_fe)
3619 continue;
3620
3621 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3622 continue;
3623
3624 stop_proxy(curpeers->peers_fe);
3625 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003626 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003627 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003628 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003629 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003630 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003631 curpeers->peers_fe = NULL;
3632 }
3633
William Lallemand2e8fad92018-11-13 16:18:23 +01003634 /*
3635 * This is only done in daemon mode because we might want the
3636 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3637 * we should now close the 3 first FDs to ensure that we can
3638 * detach from the TTY. We MUST NOT do it in other cases since
3639 * it would have already be done, and 0-2 would have been
3640 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003641 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003642 if ((global.mode & MODE_DAEMON) &&
3643 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003644 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003645 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003646 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003647 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3648 }
3649 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003650 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3651 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003652 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003653 }
3654
William Dauchye039f262019-11-17 15:47:15 +01003655 /* try our best to re-enable core dumps depending on system capabilities.
3656 * What is addressed here :
3657 * - remove file size limits
3658 * - remove core size limits
3659 * - mark the process dumpable again if it lost it due to user/group
3660 */
3661 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3662 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3663
3664#if defined(RLIMIT_FSIZE)
3665 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3666 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3667 ha_alert("[%s.main()] Failed to set the raise the maximum "
3668 "file size.\n", argv[0]);
3669 if (!(global.mode & MODE_MWORKER))
3670 exit(1);
3671 }
3672 else
3673 ha_warning("[%s.main()] Failed to set the raise the maximum "
3674 "file size. This will fail in >= v2.3\n", argv[0]);
3675 }
3676#endif
3677
3678#if defined(RLIMIT_CORE)
3679 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3680 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3681 ha_alert("[%s.main()] Failed to set the raise the core "
3682 "dump size.\n", argv[0]);
3683 if (!(global.mode & MODE_MWORKER))
3684 exit(1);
3685 }
3686 else
3687 ha_warning("[%s.main()] Failed to set the raise the core "
3688 "dump size. This will fail in >= v2.3\n", argv[0]);
3689 }
3690#endif
3691
3692#if defined(USE_PRCTL)
3693 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3694 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3695 "no core will be dumped.\n", argv[0]);
3696#endif
3697 }
3698
Christopher Faulete3a5e352017-10-24 13:53:54 +02003699 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003700 /*
3701 * That's it : the central polling loop. Run until we stop.
3702 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003703#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003704 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003705 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003706 int i;
3707
William Lallemand1aab50b2018-06-07 09:46:01 +02003708 /* ensure the signals will be blocked in every thread */
3709 sigfillset(&blocked_sig);
3710 sigdelset(&blocked_sig, SIGPROF);
3711 sigdelset(&blocked_sig, SIGBUS);
3712 sigdelset(&blocked_sig, SIGFPE);
3713 sigdelset(&blocked_sig, SIGILL);
3714 sigdelset(&blocked_sig, SIGSEGV);
3715 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3716
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003717 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003718 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003719 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003720 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003721
Christopher Faulet62519022017-10-16 15:49:32 +02003722#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003723 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003724 if (global.cpu_map.proc_t1[relative_pid-1])
3725 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3726
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003727 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003728 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003729 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003730
Willy Tarreau421f02e2018-01-20 18:19:22 +01003731 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003732 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003733#if defined(__APPLE__)
3734 int j;
3735 unsigned long cpu_map = global.cpu_map.thread[i];
3736
3737 while ((j = ffsl(cpu_map)) > 0) {
3738 thread_affinity_policy_data_t cpu_set = { j - 1 };
3739 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3740 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3741 cpu_map &= ~(1UL << (j - 1));
3742 }
3743#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003744#if defined(__FreeBSD__) || defined(__NetBSD__)
3745 cpuset_t cpuset;
3746#else
3747 cpu_set_t cpuset;
3748#endif
3749 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003750 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003751
3752 CPU_ZERO(&cpuset);
3753
3754 while ((j = ffsl(cpu_map)) > 0) {
3755 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003756 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003757 }
David Carliera92c5ce2019-09-13 05:03:12 +01003758 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003759 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003760#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003761 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003762 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003763#endif /* !USE_CPU_AFFINITY */
3764
William Lallemand1aab50b2018-06-07 09:46:01 +02003765 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003766 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003767
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003768 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003769 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003770
3771 /* Wait the end of other threads */
3772 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003773 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003774
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003775#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3776 show_lock_stats();
3777#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003778 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003779#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003780 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003781 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003782#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003783
Tim Duesterhus0a3b43d2020-06-14 00:37:42 +02003784 deinit_and_exit(0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003785}
3786
Willy Tarreaubaaee002006-06-26 02:48:02 +02003787/*
3788 * Local variables:
3789 * c-indent-level: 8
3790 * c-basic-offset: 8
3791 * End:
3792 */