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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau6c1b6672019-02-26 16:43:49 +01003 * Copyright 2000-2019 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>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010062#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
Willy Tarreau636848a2019-04-15 19:38:50 +020064#if defined(USE_PRCTL)
65#include <sys/prctl.h>
66#endif
67
Willy Tarreaubaaee002006-06-26 02:48:02 +020068#ifdef DEBUG_FULL
69#include <assert.h>
70#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010071#if defined(USE_SYSTEMD)
72#include <systemd/sd-daemon.h>
73#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020074
Willy Tarreau2dd0d472006-06-29 17:53:05 +020075#include <common/base64.h>
76#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020077#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020078#include <common/compat.h>
79#include <common/config.h>
80#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010081#include <common/errors.h>
Willy Tarreau5794fb02018-11-25 18:43:29 +010082#include <common/initcall.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020083#include <common/memory.h>
84#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010085#include <common/namespace.h>
Willy Tarreauc125cef2019-05-10 09:58:43 +020086#include <common/openssl-compat.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020087#include <common/regex.h>
88#include <common/standard.h>
89#include <common/time.h>
90#include <common/uri_auth.h>
91#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020092#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020093
94#include <types/capture.h>
William Lallemandce83b4a2018-10-26 14:47:30 +020095#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020096#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020097#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090098#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020099#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200101#include <proto/acl.h>
Willy Tarreau609aad92018-11-22 08:31:09 +0100102#include <proto/activity.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +0200103#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +0200104#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200105#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200106#include <proto/channel.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200107#include <proto/cli.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200108#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200109#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200110#include <proto/filters.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100111#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +0200112#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200113#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200114#include <proto/log.h>
William Lallemand48dfbbd2019-04-01 11:29:53 +0200115#include <proto/mworker.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100116#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200117#include <proto/protocol.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +0200118#include <proto/http_ana.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200119#include <proto/proxy.h>
120#include <proto/queue.h>
121#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200122#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200123#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200124#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200125#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200126#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100127#include <proto/vars.h>
Grant Zhang872f9c22017-01-21 01:10:18 +0000128#include <proto/ssl_sock.h>
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
Olivier Houchard79321b92018-07-26 17:55:11 +0200140volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200141/* global options */
142struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100143 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100144 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100145 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200146 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200147 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100148 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100149 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100150 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200151 .unix_bind = {
152 .ux = {
153 .uid = -1,
154 .gid = -1,
155 .mode = 0,
156 }
157 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200158 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100159 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100160 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreau27097842015-09-28 13:53:23 +0200161 .maxrewrite = -1,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100162 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100163 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200164 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200165 .pool_low_ratio = 20,
166 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200167 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200168#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100169 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200170#endif
William Lallemandf3747832012-11-09 12:33:10 +0100171 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100172#ifdef DEFAULT_IDLE_TIMER
173 .idle_timer = DEFAULT_IDLE_TIMER,
174#else
175 .idle_timer = 1000, /* 1 second */
176#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200177 },
Emeric Brun76d88952012-10-05 15:47:31 +0200178#ifdef USE_OPENSSL
179#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200180 .maxsslconn = DEFAULT_MAXSSLCONN,
181#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200182#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200183 /* others NULL OK */
184};
185
186/*********************************************************************/
187
188int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100189int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200190int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100191int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100192int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100193int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200194
195/* Here we store informations about the pids of the processes we may pause
196 * or kill. We will send them a signal every 10 ms until we can bind to all
197 * our ports. With 200 retries, that's about 2 seconds.
198 */
199#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200200static int *oldpids = NULL;
201static int oldpids_sig; /* use USR1 or TERM */
202
Olivier Houchardf73629d2017-04-05 22:33:04 +0200203/* Path to the unix socket we use to retrieve listener sockets from the old process */
204static const char *old_unixsocket;
205
William Lallemand85b0bd92017-06-01 17:38:53 +0200206static char *cur_unixsocket = NULL;
207
William Lallemandcb11fd22017-06-01 17:38:52 +0200208int atexit_flag = 0;
209
Willy Tarreaubb545b42010-08-25 12:58:59 +0200210int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200211const int zero = 0;
212const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200213const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200214
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100215char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200216char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200217
Willy Tarreau89efaed2013-12-13 15:14:55 +0100218/* used from everywhere just to drain results we don't want to read and which
219 * recent versions of gcc increasingly and annoyingly complain about.
220 */
221int shut_your_big_mouth_gcc_int = 0;
222
William Lallemand73b85e72017-06-01 17:38:51 +0200223static char **next_argv = NULL;
224
William Lallemandbc193052018-09-11 10:06:26 +0200225struct list proc_list = LIST_HEAD_INIT(proc_list);
226
227int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100228unsigned int rlim_fd_cur_at_boot = 0;
229unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200230
William Lallemand16dd1b32018-11-19 18:46:18 +0100231struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200232
Willy Tarreau08ceb102011-07-24 22:58:00 +0200233/* list of the temporarily limited listeners because of lack of resource */
Olivier Houchard859dc802019-08-08 15:47:21 +0200234struct mt_list global_listener_queue = MT_LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200235struct task *global_listener_queue_task;
Olivier Houchard9f6af332018-05-25 14:04:04 +0200236static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200237
William Lallemandb3f2be32018-09-11 10:06:18 +0200238static void *run_thread_poll_loop(void *data);
239
Willy Tarreauff055502014-04-28 22:27:06 +0200240/* bitfield of a few warnings to emit just once (WARN_*) */
241unsigned int warned = 0;
242
William Lallemande7361152018-10-26 14:47:36 +0200243/* master CLI configuration (-S flag) */
244struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100245
246/* These are strings to be reported in the output of "haproxy -vv". They may
247 * either be constants (in which case must_free must be zero) or dynamically
248 * allocated strings to pass to free() on exit, and in this case must_free
249 * must be non-zero.
250 */
251struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
252struct build_opts_str {
253 struct list list;
254 const char *str;
255 int must_free;
256};
257
Willy Tarreaue6945732016-12-21 19:57:00 +0100258/* These functions are called just after the point where the program exits
259 * after a config validity check, so they are generally suited for resource
260 * allocation and slow initializations that should be skipped during basic
261 * config checks. The functions must return 0 on success, or a combination
262 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
263 * and immediate exit, so the function must have emitted any useful error.
264 */
265struct list post_check_list = LIST_HEAD_INIT(post_check_list);
266struct post_check_fct {
267 struct list list;
268 int (*fct)();
269};
270
Christopher Fauletc1692962019-08-12 09:51:07 +0200271/* These functions are called for each proxy just after the config validity
272 * check. The functions must return 0 on success, or a combination of ERR_*
273 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
274 * exit, so the function must have emitted any useful error.
275 */
276struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
277struct post_proxy_check_fct {
278 struct list list;
279 int (*fct)(struct proxy *);
280};
281
282/* These functions are called for each server just after the config validity
283 * check. The functions must return 0 on success, or a combination of ERR_*
284 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
285 * exit, so the function must have emitted any useful error.
286 */
287struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
288struct post_server_check_fct {
289 struct list list;
290 int (*fct)(struct server *);
291};
292
Willy Tarreau082b6282019-05-22 14:42:12 +0200293/* These functions are called for each thread just after the thread creation
294 * and before running the init functions. They should be used to do per-thread
295 * (re-)allocations that are needed by subsequent functoins. They must return 0
296 * if an error occurred. */
297struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
298struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100299 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200300 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100301};
302
Christopher Faulet415f6112017-07-25 16:52:58 +0200303/* These functions are called for each thread just after the thread creation
304 * and before running the scheduler. They should be used to do per-thread
305 * initializations. They must return 0 if an error occurred. */
306struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
307struct per_thread_init_fct {
308 struct list list;
309 int (*fct)();
310};
311
Willy Tarreau082b6282019-05-22 14:42:12 +0200312/* These functions are called when freeing the global sections at the end of
313 * deinit, after everything is stopped. They don't return anything. They should
314 * not release shared resources that are possibly used by other deinit
315 * functions, only close/release what is private. Use the per_thread_free_list
316 * to release shared resources.
317 */
318struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
319struct post_deinit_fct {
320 struct list list;
321 void (*fct)();
322};
323
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200324/* These functions are called when freeing a proxy during the deinit, after
325 * everything isg stopped. They don't return anything. They should not release
326 * the proxy itself or any shared resources that are possibly used by other
327 * deinit functions, only close/release what is private.
328 */
329struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
330struct proxy_deinit_fct {
331 struct list list;
332 void (*fct)(struct proxy *);
333};
334
335/* These functions are called when freeing a server during the deinit, after
336 * everything isg stopped. They don't return anything. They should not release
337 * the proxy itself or any shared resources that are possibly used by other
338 * deinit functions, only close/release what is private.
339 */
340struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
341struct server_deinit_fct {
342 struct list list;
343 void (*fct)(struct server *);
344};
345
Willy Tarreau082b6282019-05-22 14:42:12 +0200346/* These functions are called when freeing the global sections at the end of
347 * deinit, after the thread deinit functions, to release unneeded memory
348 * allocations. They don't return anything, and they work in best effort mode
349 * as their sole goal is to make valgrind mostly happy.
350 */
351struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
352struct per_thread_free_fct {
353 struct list list;
354 int (*fct)();
355};
356
Christopher Faulet415f6112017-07-25 16:52:58 +0200357/* These functions are called for each thread just after the scheduler loop and
358 * before exiting the thread. They don't return anything and, as for post-deinit
359 * functions, they work in best effort mode as their sole goal is to make
360 * valgrind mostly happy. */
361struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
362struct per_thread_deinit_fct {
363 struct list list;
364 void (*fct)();
365};
366
Willy Tarreaubaaee002006-06-26 02:48:02 +0200367/*********************************************************************/
368/* general purpose functions ***************************************/
369/*********************************************************************/
370
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100371/* used to register some build option strings at boot. Set must_free to
372 * non-zero if the string must be freed upon exit.
373 */
374void hap_register_build_opts(const char *str, int must_free)
375{
376 struct build_opts_str *b;
377
378 b = calloc(1, sizeof(*b));
379 if (!b) {
380 fprintf(stderr, "out of memory\n");
381 exit(1);
382 }
383 b->str = str;
384 b->must_free = must_free;
385 LIST_ADDQ(&build_opts_list, &b->list);
386}
387
Willy Tarreaue6945732016-12-21 19:57:00 +0100388/* used to register some initialization functions to call after the checks. */
389void hap_register_post_check(int (*fct)())
390{
391 struct post_check_fct *b;
392
393 b = calloc(1, sizeof(*b));
394 if (!b) {
395 fprintf(stderr, "out of memory\n");
396 exit(1);
397 }
398 b->fct = fct;
399 LIST_ADDQ(&post_check_list, &b->list);
400}
401
Christopher Fauletc1692962019-08-12 09:51:07 +0200402/* used to register some initialization functions to call for each proxy after
403 * the checks.
404 */
405void hap_register_post_proxy_check(int (*fct)(struct proxy *))
406{
407 struct post_proxy_check_fct *b;
408
409 b = calloc(1, sizeof(*b));
410 if (!b) {
411 fprintf(stderr, "out of memory\n");
412 exit(1);
413 }
414 b->fct = fct;
415 LIST_ADDQ(&post_proxy_check_list, &b->list);
416}
417
418/* used to register some initialization functions to call for each server after
419 * the checks.
420 */
421void hap_register_post_server_check(int (*fct)(struct server *))
422{
423 struct post_server_check_fct *b;
424
425 b = calloc(1, sizeof(*b));
426 if (!b) {
427 fprintf(stderr, "out of memory\n");
428 exit(1);
429 }
430 b->fct = fct;
431 LIST_ADDQ(&post_server_check_list, &b->list);
432}
433
Willy Tarreau05554e62016-12-21 20:46:26 +0100434/* used to register some de-initialization functions to call after everything
435 * has stopped.
436 */
437void hap_register_post_deinit(void (*fct)())
438{
439 struct post_deinit_fct *b;
440
441 b = calloc(1, sizeof(*b));
442 if (!b) {
443 fprintf(stderr, "out of memory\n");
444 exit(1);
445 }
446 b->fct = fct;
447 LIST_ADDQ(&post_deinit_list, &b->list);
448}
449
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200450/* used to register some per proxy de-initialization functions to call after
451 * everything has stopped.
452 */
453void hap_register_proxy_deinit(void (*fct)(struct proxy *))
454{
455 struct proxy_deinit_fct *b;
456
457 b = calloc(1, sizeof(*b));
458 if (!b) {
459 fprintf(stderr, "out of memory\n");
460 exit(1);
461 }
462 b->fct = fct;
463 LIST_ADDQ(&proxy_deinit_list, &b->list);
464}
465
466
467/* used to register some per server de-initialization functions to call after
468 * everything has stopped.
469 */
470void hap_register_server_deinit(void (*fct)(struct server *))
471{
472 struct server_deinit_fct *b;
473
474 b = calloc(1, sizeof(*b));
475 if (!b) {
476 fprintf(stderr, "out of memory\n");
477 exit(1);
478 }
479 b->fct = fct;
480 LIST_ADDQ(&server_deinit_list, &b->list);
481}
482
Willy Tarreau082b6282019-05-22 14:42:12 +0200483/* used to register some allocation functions to call for each thread. */
484void hap_register_per_thread_alloc(int (*fct)())
485{
486 struct per_thread_alloc_fct *b;
487
488 b = calloc(1, sizeof(*b));
489 if (!b) {
490 fprintf(stderr, "out of memory\n");
491 exit(1);
492 }
493 b->fct = fct;
494 LIST_ADDQ(&per_thread_alloc_list, &b->list);
495}
496
Christopher Faulet415f6112017-07-25 16:52:58 +0200497/* used to register some initialization functions to call for each thread. */
498void hap_register_per_thread_init(int (*fct)())
499{
500 struct per_thread_init_fct *b;
501
502 b = calloc(1, sizeof(*b));
503 if (!b) {
504 fprintf(stderr, "out of memory\n");
505 exit(1);
506 }
507 b->fct = fct;
508 LIST_ADDQ(&per_thread_init_list, &b->list);
509}
510
511/* used to register some de-initialization functions to call for each thread. */
512void hap_register_per_thread_deinit(void (*fct)())
513{
514 struct per_thread_deinit_fct *b;
515
516 b = calloc(1, sizeof(*b));
517 if (!b) {
518 fprintf(stderr, "out of memory\n");
519 exit(1);
520 }
521 b->fct = fct;
522 LIST_ADDQ(&per_thread_deinit_list, &b->list);
523}
524
Willy Tarreau082b6282019-05-22 14:42:12 +0200525/* used to register some free functions to call for each thread. */
526void hap_register_per_thread_free(int (*fct)())
527{
528 struct per_thread_free_fct *b;
529
530 b = calloc(1, sizeof(*b));
531 if (!b) {
532 fprintf(stderr, "out of memory\n");
533 exit(1);
534 }
535 b->fct = fct;
536 LIST_ADDQ(&per_thread_free_list, &b->list);
537}
538
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100539static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200540{
Willy Tarreau909b9d82019-01-04 18:20:32 +0100541 printf("HA-Proxy version %s %s - https://haproxy.org/\n", haproxy_version, haproxy_date);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200542}
543
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100544static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100545{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100546 struct build_opts_str *item;
547
Willy Tarreau7b066db2007-12-02 11:28:59 +0100548 printf("Build options :"
549#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100550 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100551#endif
552#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100553 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100554#endif
555#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100556 "\n CC = " BUILD_CC
557#endif
558#ifdef BUILD_CFLAGS
559 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100560#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100561#ifdef BUILD_OPTIONS
562 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100563#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100564#ifdef BUILD_FEATURES
565 "\n\nFeature list : " BUILD_FEATURES
566#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200567 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100568 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200569 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100570 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200571
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100572 list_for_each_entry(item, &build_opts_list, list) {
573 puts(item->str);
574 }
575
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100576 putchar('\n');
577
Willy Tarreaube5b6852009-10-03 18:57:08 +0200578 list_pollers(stdout);
579 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200580 list_mux_proto(stdout);
581 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100582 list_services(stdout);
583 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100584 list_filters(stdout);
585 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100586}
587
Willy Tarreaubaaee002006-06-26 02:48:02 +0200588/*
589 * This function prints the command line usage and exits
590 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100591static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200592{
593 display_version();
594 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200595 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200596 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200597 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100598 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200599 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200600 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200601 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200602 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200603 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100604#if defined(USE_SYSTEMD)
605 " -Ws master-worker mode with systemd notify support.\n"
606#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200607 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200608 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100609 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200610 " -m limits the usable amount of memory (in MB)\n"
611 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200612 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200613 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200614#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200615 " -de disables epoll() usage even when available\n"
616#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200617#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200618 " -dk disables kqueue() usage even when available\n"
619#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200620#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000621 " -dv disables event ports usage even when available\n"
622#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200623#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200624 " -dp disables poll() usage even when available\n"
625#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200626#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100627 " -dS disables splice usage (broken on old kernels)\n"
628#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200629#if defined(USE_GETADDRINFO)
630 " -dG disables getaddrinfo() usage\n"
631#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000632#if defined(SO_REUSEPORT)
633 " -dR disables SO_REUSEPORT usage\n"
634#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100635 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100636 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200637 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200638 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200639 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200640 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100641 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200642 exit(1);
643}
644
645
646
647/*********************************************************************/
648/* more specific functions ***************************************/
649/*********************************************************************/
650
William Lallemand73b85e72017-06-01 17:38:51 +0200651/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
652 * pids the signal was correctly delivered to.
653 */
William Lallemande25473c2019-04-01 11:29:56 +0200654int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200655{
656 int p;
657 int ret = 0;
658 for (p = 0; p < nb_oldpids; p++)
659 if (kill(oldpids[p], sig) == 0)
660 ret++;
661 return ret;
662}
663
William Lallemand75ea0a02017-11-15 19:02:58 +0100664/*
William Lallemand73b85e72017-06-01 17:38:51 +0200665 * remove a pid forom the olpid array and decrease nb_oldpids
666 * return 1 pid was found otherwise return 0
667 */
668
669int delete_oldpid(int pid)
670{
671 int i;
672
673 for (i = 0; i < nb_oldpids; i++) {
674 if (oldpids[i] == pid) {
675 oldpids[i] = oldpids[nb_oldpids - 1];
676 oldpids[nb_oldpids - 1] = 0;
677 nb_oldpids--;
678 return 1;
679 }
680 }
681 return 0;
682}
683
William Lallemand85b0bd92017-06-01 17:38:53 +0200684
685static void get_cur_unixsocket()
686{
687 /* if -x was used, try to update the stat socket if not available anymore */
688 if (global.stats_fe) {
689 struct bind_conf *bind_conf;
690
691 /* pass through all stats socket */
692 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
693 struct listener *l;
694
695 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
696
697 if (l->addr.ss_family == AF_UNIX &&
698 (bind_conf->level & ACCESS_FD_LISTENERS)) {
699 const struct sockaddr_un *un;
700
701 un = (struct sockaddr_un *)&l->addr;
702 /* priority to old_unixsocket */
703 if (!cur_unixsocket) {
704 cur_unixsocket = strdup(un->sun_path);
705 } else {
706 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
707 free(cur_unixsocket);
708 cur_unixsocket = strdup(old_unixsocket);
709 return;
710 }
711 }
712 }
713 }
714 }
715 }
716 if (!cur_unixsocket && old_unixsocket)
717 cur_unixsocket = strdup(old_unixsocket);
718}
719
William Lallemand73b85e72017-06-01 17:38:51 +0200720/*
721 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800722 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200723 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100724void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200725{
726 int next_argc = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200727 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100728 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100729 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200730
731 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100732#if defined(USE_SYSTEMD)
733 if (global.tune.options & GTUNE_USE_SYSTEMD)
734 sd_notify(0, "RELOADING=1");
735#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200736 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
737
William Lallemandbc193052018-09-11 10:06:26 +0200738 mworker_proc_list_to_env(); /* put the children description in the env */
739
William Lallemand7c756a82018-11-26 11:53:40 +0100740 /* during the reload we must ensure that every FDs that can't be
741 * reuse (ie those that are not referenced in the proc_list)
742 * are closed or they will leak. */
743
744 /* close the listeners FD */
745 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200746
747 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
748 /* close the poller FD and the thread waker pipe FD */
749 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
750 ptdf->fct();
751 if (fdtab)
752 deinit_pollers();
753 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200754#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
Rob Allen56996da2019-05-03 09:11:32 +0100755 if (global.ssl_used_frontend || global.ssl_used_backend)
756 /* close random device FDs */
757 RAND_keep_random_devices_open(0);
758#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100759
Willy Tarreau8dca1952019-03-01 10:21:55 +0100760 /* restore the initial FD limits */
761 limit.rlim_cur = rlim_fd_cur_at_boot;
762 limit.rlim_max = rlim_fd_max_at_boot;
763 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
764 getrlimit(RLIMIT_NOFILE, &limit);
765 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
766 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
767 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
768 }
769
William Lallemand73b85e72017-06-01 17:38:51 +0200770 /* compute length */
771 while (next_argv[next_argc])
772 next_argc++;
773
William Lallemand85b0bd92017-06-01 17:38:53 +0200774 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand3f128872019-04-01 11:29:59 +0200775 next_argv = realloc(next_argv, (next_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200776 if (next_argv == NULL)
777 goto alloc_error;
778
William Lallemand73b85e72017-06-01 17:38:51 +0200779 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200780 if (mworker_child_nb() > 0) {
781 struct mworker_proc *child;
782
William Lallemand73b85e72017-06-01 17:38:51 +0200783 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200784
785 list_for_each_entry(child, &proc_list, list) {
William Lallemand8f7069a2019-04-12 16:09:23 +0200786 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)))
William Lallemand3f128872019-04-01 11:29:59 +0200787 continue;
788 next_argv[next_argc] = memprintf(&msg, "%d", child->pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200789 if (next_argv[next_argc] == NULL)
790 goto alloc_error;
791 msg = NULL;
William Lallemand3f128872019-04-01 11:29:59 +0200792 next_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200793 }
794 }
William Lallemand3f128872019-04-01 11:29:59 +0200795
William Lallemand73b85e72017-06-01 17:38:51 +0200796 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200797
William Lallemand2bf6d622017-06-20 11:20:23 +0200798 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200799 if (cur_unixsocket) {
800
William Lallemand2bf6d622017-06-20 11:20:23 +0200801 next_argv[next_argc++] = "-x";
802 next_argv[next_argc++] = (char *)cur_unixsocket;
803 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200804 }
805
Christopher Faulet767a84b2017-11-24 16:50:31 +0100806 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200807 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100808 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200809
Christopher Faulet767a84b2017-11-24 16:50:31 +0100810 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100811 return;
812
William Lallemand73b85e72017-06-01 17:38:51 +0200813alloc_error:
Joseph Herlant07a08342018-11-15 10:43:05 -0800814 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200815 return;
816}
817
William Lallemandb3f2be32018-09-11 10:06:18 +0200818static void mworker_loop()
819{
820
821#if defined(USE_SYSTEMD)
822 if (global.tune.options & GTUNE_USE_SYSTEMD)
823 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
824#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200825 /* Busy polling makes no sense in the master :-) */
826 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200827
William Lallemandbc193052018-09-11 10:06:26 +0200828 master = 1;
829
William Lallemand0564d412018-11-20 17:36:53 +0100830 signal_unregister(SIGUSR1);
831 signal_unregister(SIGHUP);
832 signal_unregister(SIGQUIT);
833
William Lallemandb3f2be32018-09-11 10:06:18 +0200834 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
835 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
836 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
837 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
838 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
839 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
840
841 mworker_unblock_signals();
842 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100843 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200844
William Lallemandbc193052018-09-11 10:06:26 +0200845 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
846 some SIGCHLD were lost */
847
William Lallemandb3f2be32018-09-11 10:06:18 +0200848 global.nbthread = 1;
849 relative_pid = 1;
850 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100851 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200852
William Lallemand2672eb92018-12-14 15:52:39 +0100853#ifdef USE_THREAD
854 tid_bit = 1;
855 all_threads_mask = 1;
856#endif
857
William Lallemandb3f2be32018-09-11 10:06:18 +0200858 jobs++; /* this is the "master" job, we want to take care of the
859 signals even if there is no listener so the poll loop don't
860 leave */
861
862 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200863 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200864}
William Lallemandcb11fd22017-06-01 17:38:52 +0200865
866/*
867 * Reexec the process in failure mode, instead of exiting
868 */
869void reexec_on_failure()
870{
871 if (!atexit_flag)
872 return;
873
874 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
875
Christopher Faulet767a84b2017-11-24 16:50:31 +0100876 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200877 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200878}
William Lallemand73b85e72017-06-01 17:38:51 +0200879
880
881/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200882 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
883 * a signal zero to all subscribers. This means that it's as easy as
884 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200885 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100886static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200887{
888 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200889 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100890 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200891}
892
893/*
894 * upon SIGTTOU, we pause everything
895 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100896static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200897{
898 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100899 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200900}
901
902/*
903 * upon SIGTTIN, let's have a soft stop.
904 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100905static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200906{
Willy Tarreaube58c382011-07-24 18:28:10 +0200907 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200908}
909
910/*
911 * this function dumps every server's state when the process receives SIGHUP.
912 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100913static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200914{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100915 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200916
Christopher Faulet767a84b2017-11-24 16:50:31 +0100917 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200918 while (p) {
919 struct server *s = p->srv;
920
921 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
922 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100923 chunk_printf(&trash,
924 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
925 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200926 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100927 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200928 ha_warning("%s\n", trash.area);
929 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200930 s = s->next;
931 }
932
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200933 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
934 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100935 chunk_printf(&trash,
936 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
937 p->id,
938 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 +0200939 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100940 chunk_printf(&trash,
941 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
942 p->id,
943 (p->srv_bck) ? "is running on backup servers" : "has no server available",
944 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 +0200945 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100946 chunk_printf(&trash,
947 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
948 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
949 p->id, p->srv_act, p->srv_bck,
950 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 +0200951 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200952 ha_warning("%s\n", trash.area);
953 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200954
955 p = p->next;
956 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200957}
958
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100959static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200960{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200961 /* dump memory usage then free everything possible */
962 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100963 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200964}
965
William Lallemande1340412017-12-28 16:09:36 +0100966/*
967 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
968 * If <fd> < 0, it opens /dev/null and use it to dup
969 *
970 * In the case of chrooting, you have to open /dev/null before the chroot, and
971 * pass the <fd> to this function
972 */
973static void stdio_quiet(int fd)
974{
975 if (fd < 0)
976 fd = open("/dev/null", O_RDWR, 0);
977
978 if (fd > -1) {
979 fclose(stdin);
980 fclose(stdout);
981 fclose(stderr);
982
983 dup2(fd, 0);
984 dup2(fd, 1);
985 dup2(fd, 2);
986 if (fd > 2)
987 close(fd);
988 return;
989 }
990
991 ha_alert("Cannot open /dev/null\n");
992 exit(EXIT_FAILURE);
993}
994
995
Joseph Herlant03420902018-11-15 10:41:50 -0800996/* This function checks if cfg_cfgfiles contains directories.
997 * If it finds one, it adds all the files (and only files) it contains
998 * in cfg_cfgfiles in place of the directory (and removes the directory).
999 * It adds the files in lexical order.
1000 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001001 * It doesn't add files with name starting with '.'
1002 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001003static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001004{
1005 struct wordlist *wl, *wlb;
1006 char *err = NULL;
1007
1008 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1009 struct stat file_stat;
1010 struct dirent **dir_entries = NULL;
1011 int dir_entries_nb;
1012 int dir_entries_it;
1013
1014 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001015 ha_alert("Cannot open configuration file/directory %s : %s\n",
1016 wl->s,
1017 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001018 exit(1);
1019 }
1020
1021 if (!S_ISDIR(file_stat.st_mode))
1022 continue;
1023
1024 /* from this point wl->s is a directory */
1025
1026 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1027 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001028 ha_alert("Cannot open configuration directory %s : %s\n",
1029 wl->s,
1030 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001031 exit(1);
1032 }
1033
1034 /* for each element in the directory wl->s */
1035 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1036 struct dirent *dir_entry = dir_entries[dir_entries_it];
1037 char *filename = NULL;
1038 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1039
1040 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001041 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001042 */
1043 if (dir_entry->d_name[0] == '.' ||
1044 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1045 goto next_dir_entry;
1046
1047 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001048 ha_alert("Cannot load configuration files %s : out of memory.\n",
1049 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001050 exit(1);
1051 }
1052
1053 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001054 ha_alert("Cannot open configuration file %s : %s\n",
1055 wl->s,
1056 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001057 exit(1);
1058 }
1059
1060 /* don't add anything else than regular file in cfg_cfgfiles
1061 * this way we avoid loops
1062 */
1063 if (!S_ISREG(file_stat.st_mode))
1064 goto next_dir_entry;
1065
1066 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001067 ha_alert("Cannot load configuration files %s : %s\n",
1068 filename,
1069 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001070 exit(1);
1071 }
1072
1073next_dir_entry:
1074 free(filename);
1075 free(dir_entry);
1076 }
1077
1078 free(dir_entries);
1079
1080 /* remove the current directory (wl) from cfg_cfgfiles */
1081 free(wl->s);
1082 LIST_DEL(&wl->list);
1083 free(wl);
1084 }
1085
1086 free(err);
1087}
1088
Olivier Houchardf73629d2017-04-05 22:33:04 +02001089static int get_old_sockets(const char *unixsocket)
1090{
1091 char *cmsgbuf = NULL, *tmpbuf = NULL;
1092 int *tmpfd = NULL;
1093 struct sockaddr_un addr;
1094 struct cmsghdr *cmsg;
1095 struct msghdr msghdr;
1096 struct iovec iov;
1097 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001098 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001099 int sock = -1;
1100 int ret = -1;
1101 int ret2 = -1;
1102 int fd_nb;
1103 int got_fd = 0;
1104 int i = 0;
1105 size_t maxoff = 0, curoff = 0;
1106
1107 memset(&msghdr, 0, sizeof(msghdr));
1108 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1109 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001110 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001111 goto out;
1112 }
1113 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1114 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001115 ha_warning("Failed to connect to the old process socket '%s'\n",
1116 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001117 goto out;
1118 }
1119 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1120 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1121 addr.sun_family = PF_UNIX;
1122 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1123 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001124 ha_warning("Failed to connect to the old process socket '%s'\n",
1125 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001126 goto out;
1127 }
Olivier Houchard54740872017-04-06 14:45:14 +02001128 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001129 iov.iov_base = &fd_nb;
1130 iov.iov_len = sizeof(fd_nb);
1131 msghdr.msg_iov = &iov;
1132 msghdr.msg_iovlen = 1;
1133 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1134 /* First, get the number of file descriptors to be received */
1135 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001136 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001137 goto out;
1138 }
1139 if (fd_nb == 0) {
1140 ret = 0;
1141 goto out;
1142 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001143 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001144 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001145 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001146 goto out;
1147 }
1148 tmpfd = malloc(fd_nb * sizeof(int));
1149 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001150 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001151 goto out;
1152 }
1153 msghdr.msg_control = cmsgbuf;
1154 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001155 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001156 do {
1157 int ret3;
1158
1159 iov.iov_base = tmpbuf + curoff;
1160 ret = recvmsg(sock, &msghdr, 0);
1161 if (ret == -1 && errno == EINTR)
1162 continue;
1163 if (ret <= 0)
1164 break;
1165 /* Send an ack to let the sender know we got the sockets
1166 * and it can send some more
1167 */
1168 do {
1169 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1170 } while (ret3 == -1 && errno == EINTR);
1171 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1172 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1173 if (cmsg->cmsg_level == SOL_SOCKET &&
1174 cmsg->cmsg_type == SCM_RIGHTS) {
1175 size_t totlen = cmsg->cmsg_len -
1176 CMSG_LEN(0);
1177 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001178 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001179 goto out;
1180 }
1181 /*
1182 * Be paranoid and use memcpy() to avoid any
1183 * potential alignement issue.
1184 */
1185 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1186 got_fd += totlen / sizeof(int);
1187 }
1188 }
1189 curoff += ret;
1190 } while (got_fd < fd_nb);
1191
1192 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001193 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1194 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001195 goto out;
1196 }
1197 maxoff = curoff;
1198 curoff = 0;
1199 for (i = 0; i < got_fd; i++) {
1200 int fd = tmpfd[i];
1201 socklen_t socklen;
1202 int len;
1203
1204 xfer_sock = calloc(1, sizeof(*xfer_sock));
1205 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001206 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001207 break;
1208 }
1209 xfer_sock->fd = -1;
1210
1211 socklen = sizeof(xfer_sock->addr);
1212 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001213 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001214 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001215 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001216 continue;
1217 }
1218 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001219 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001220 goto out;
1221 }
1222 len = tmpbuf[curoff++];
1223 if (len > 0) {
1224 /* We have a namespace */
1225 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001226 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001227 goto out;
1228 }
1229 xfer_sock->namespace = malloc(len + 1);
1230 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001231 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001232 goto out;
1233 }
1234 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1235 xfer_sock->namespace[len] = 0;
1236 curoff += len;
1237 }
1238 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001239 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001240 goto out;
1241 }
1242 len = tmpbuf[curoff++];
1243 if (len > 0) {
1244 /* We have an interface */
1245 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001246 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001247 goto out;
1248 }
1249 xfer_sock->iface = malloc(len + 1);
1250 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001251 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001252 goto out;
1253 }
1254 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001255 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001256 curoff += len;
1257 }
1258 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001259 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001260 goto out;
1261 }
1262 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1263 sizeof(xfer_sock->options));
1264 curoff += sizeof(xfer_sock->options);
1265
1266 xfer_sock->fd = fd;
1267 if (xfer_sock_list)
1268 xfer_sock_list->prev = xfer_sock;
1269 xfer_sock->next = xfer_sock_list;
1270 xfer_sock->prev = NULL;
1271 xfer_sock_list = xfer_sock;
1272 xfer_sock = NULL;
1273 }
1274
1275 ret2 = 0;
1276out:
1277 /* If we failed midway make sure to close the remaining
1278 * file descriptors
1279 */
1280 if (tmpfd != NULL && i < got_fd) {
1281 for (; i < got_fd; i++) {
1282 close(tmpfd[i]);
1283 }
1284 }
1285 free(tmpbuf);
1286 free(tmpfd);
1287 free(cmsgbuf);
1288 if (sock != -1)
1289 close(sock);
1290 if (xfer_sock) {
1291 free(xfer_sock->namespace);
1292 free(xfer_sock->iface);
1293 if (xfer_sock->fd != -1)
1294 close(xfer_sock->fd);
1295 free(xfer_sock);
1296 }
1297 return (ret2);
1298}
1299
Willy Tarreaubaaee002006-06-26 02:48:02 +02001300/*
William Lallemand73b85e72017-06-01 17:38:51 +02001301 * copy and cleanup the current argv
1302 * Remove the -sf /-st parameters
1303 * Return an allocated copy of argv
1304 */
1305
1306static char **copy_argv(int argc, char **argv)
1307{
1308 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001309 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001310
1311 newargv = calloc(argc + 2, sizeof(char *));
1312 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001313 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001314 return NULL;
1315 }
1316
William Lallemand2bf6d622017-06-20 11:20:23 +02001317 while (i < argc) {
1318 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001319 if (i > 0 && argv[i][0] == '-' &&
1320 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001321 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001322 i++;
1323 while (i < argc && argv[i][0] != '-') {
1324 i++;
1325 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001326 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001327 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001328
1329 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001330 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001331
William Lallemand73b85e72017-06-01 17:38:51 +02001332 return newargv;
1333}
1334
Willy Tarreau5a023f02019-03-01 14:19:31 +01001335/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1336 * setting, and returns it. It may return -1 meaning "unlimited" if some
1337 * unlimited proxies have been found and the global.maxconn value is not yet
1338 * set. It may also return a value greater than maxconn if it's not yet set.
1339 * Note that a value of zero means there is no need for pipes. -1 is never
1340 * returned if global.maxconn is valid.
1341 */
1342static int compute_ideal_maxpipes()
1343{
1344 struct proxy *cur;
1345 int nbfe = 0, nbbe = 0;
1346 int unlimited = 0;
1347 int pipes;
1348 int max;
1349
1350 for (cur = proxies_list; cur; cur = cur->next) {
1351 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1352 if (cur->cap & PR_CAP_FE) {
1353 max = cur->maxconn;
1354 nbfe += max;
1355 if (!max) {
1356 unlimited = 1;
1357 break;
1358 }
1359 }
1360 if (cur->cap & PR_CAP_BE) {
1361 max = cur->fullconn ? cur->fullconn : global.maxconn;
1362 nbbe += max;
1363 if (!max) {
1364 unlimited = 1;
1365 break;
1366 }
1367 }
1368 }
1369 }
1370
1371 pipes = MAX(nbfe, nbbe);
1372 if (global.maxconn) {
1373 if (pipes > global.maxconn || unlimited)
1374 pipes = global.maxconn;
1375 } else if (unlimited) {
1376 pipes = -1;
1377 }
1378
1379 return pipes >= 4 ? pipes / 4 : pipes;
1380}
1381
Willy Tarreauac350932019-03-01 15:43:14 +01001382/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1383 * rlimits and computes an ideal maxconn. It's meant to be called only when
1384 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001385 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1386 * default 100) is returned as it is expected that it will even run on tight
1387 * environments, and will maintain compatibility with previous packages that
1388 * used to rely on this value as the default one. The system will emit a
1389 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001390 */
1391static int compute_ideal_maxconn()
1392{
1393 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1394 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1395 int pipes = compute_ideal_maxpipes();
1396 int remain = rlim_fd_cur_at_boot;
1397 int maxconn;
1398
1399 /* we have to take into account these elements :
1400 * - number of engine_fds, which inflates the number of FD needed per
1401 * connection by this number.
1402 * - number of pipes per connection on average : for the unlimited
1403 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1404 * fixed value of 2*pipes.
1405 * - two FDs per connection
1406 */
1407
1408 /* subtract listeners and checks */
1409 remain -= global.maxsock;
1410
Willy Tarreau3f200852019-03-14 19:13:17 +01001411 /* one epoll_fd/kqueue_fd per thread */
1412 remain -= global.nbthread;
1413
1414 /* one wake-up pipe (2 fd) per thread */
1415 remain -= 2 * global.nbthread;
1416
Willy Tarreauac350932019-03-01 15:43:14 +01001417 /* Fixed pipes values : we only subtract them if they're not larger
1418 * than the remaining FDs because pipes are optional.
1419 */
1420 if (pipes >= 0 && pipes * 2 < remain)
1421 remain -= pipes * 2;
1422
1423 if (pipes < 0) {
1424 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1425 * = maxconn * (2 + 0.5 + engine_fds)
1426 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1427 */
1428 maxconn = 2 * remain / (5 + 2 * engine_fds);
1429 } else {
1430 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1431 * = maxconn * (2 + engine_fds)
1432 */
1433 maxconn = remain / (2 + engine_fds);
1434 }
1435
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001436 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001437}
1438
William Lallemand73b85e72017-06-01 17:38:51 +02001439/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001440 * This function initializes all the necessary variables. It only returns
1441 * if everything is OK. If something fails, it exits.
1442 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001443static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001444{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001446 char *tmp;
1447 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001448 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001449 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001450 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001451 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001452 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001453 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001454 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001455 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001456
Christopher Faulete3a5e352017-10-24 13:53:54 +02001457 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001458 next_argv = copy_argv(argc, argv);
1459
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001460 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001461 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001462 exit(1);
1463 }
David du Colombier7af46052012-05-16 14:16:48 +02001464
Emeric Brun2b920a12010-09-23 18:30:22 +02001465 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1466 * the string in case of truncation, and at least FreeBSD appears not to do
1467 * it.
1468 */
1469 memset(hostname, 0, sizeof(hostname));
1470 gethostname(hostname, sizeof(hostname) - 1);
1471 memset(localpeer, 0, sizeof(localpeer));
1472 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001473 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001474
Willy Tarreaubaaee002006-06-26 02:48:02 +02001475 /*
1476 * Initialize the previously static variables.
1477 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001478
Willy Tarreau173d9952018-01-26 21:48:23 +01001479 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001480 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001481
Willy Tarreaubaaee002006-06-26 02:48:02 +02001482
1483#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001484 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001485#endif
1486
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001487 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001488 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001489 start_date = now;
1490
Willy Tarreau84310e22014-02-14 11:59:04 +01001491 srandom(now_ms - getpid());
1492
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001493 if (init_acl() != 0)
1494 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001495
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001496 /* Initialise lua. */
1497 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001498
Christopher Fauletff2613e2016-11-09 11:36:17 +01001499 /* Initialize process vars */
1500 vars_init(&global.vars, SCOPE_PROC);
1501
Willy Tarreau43b78992009-01-25 15:42:27 +01001502 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001503#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001504 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001505#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001506#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001507 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001508#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001509#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001510 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001511#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001512#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001513 global.tune.options |= GTUNE_USE_EVPORTS;
1514#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001515#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001516 global.tune.options |= GTUNE_USE_SPLICE;
1517#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001518#if defined(USE_GETADDRINFO)
1519 global.tune.options |= GTUNE_USE_GAI;
1520#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001521#if defined(SO_REUSEPORT)
1522 global.tune.options |= GTUNE_USE_REUSEPORT;
1523#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001524
1525 pid = getpid();
1526 progname = *argv;
1527 while ((tmp = strchr(progname, '/')) != NULL)
1528 progname = tmp + 1;
1529
Kevinm48936af2010-12-22 16:08:21 +00001530 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001531 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001532
Willy Tarreaubaaee002006-06-26 02:48:02 +02001533 argc--; argv++;
1534 while (argc > 0) {
1535 char *flag;
1536
1537 if (**argv == '-') {
1538 flag = *argv+1;
1539
1540 /* 1 arg */
1541 if (*flag == 'v') {
1542 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001543 if (flag[1] == 'v') /* -vv */
1544 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001545 exit(0);
1546 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001547#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001548 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001549 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001550#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001551#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001552 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001553 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001554#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001555#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001556 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001557 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001558#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001559#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001560 else if (*flag == 'd' && flag[1] == 'v')
1561 global.tune.options &= ~GTUNE_USE_EVPORTS;
1562#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001563#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001564 else if (*flag == 'd' && flag[1] == 'S')
1565 global.tune.options &= ~GTUNE_USE_SPLICE;
1566#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001567#if defined(USE_GETADDRINFO)
1568 else if (*flag == 'd' && flag[1] == 'G')
1569 global.tune.options &= ~GTUNE_USE_GAI;
1570#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001571#if defined(SO_REUSEPORT)
1572 else if (*flag == 'd' && flag[1] == 'R')
1573 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1574#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001575 else if (*flag == 'd' && flag[1] == 'V')
1576 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001577 else if (*flag == 'V')
1578 arg_mode |= MODE_VERBOSE;
1579 else if (*flag == 'd' && flag[1] == 'b')
1580 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001581 else if (*flag == 'd' && flag[1] == 'M')
1582 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001583 else if (*flag == 'd' && flag[1] == 'r')
1584 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001585 else if (*flag == 'd')
1586 arg_mode |= MODE_DEBUG;
1587 else if (*flag == 'c')
1588 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001589 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001590 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001591 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001592 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001593#if defined(USE_SYSTEMD)
1594 global.tune.options |= GTUNE_USE_SYSTEMD;
1595#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001596 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 +01001597 usage(progname);
1598#endif
1599 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001600 else if (*flag == 'W')
1601 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001602 else if (*flag == 'q')
1603 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001604 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001605 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001606 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001607 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001608 }
William Lallemand4fc09692017-06-19 16:37:19 +02001609 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001610 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001611 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001612
Olivier Houchardf73629d2017-04-05 22:33:04 +02001613 argv++;
1614 argc--;
1615 }
William Lallemande7361152018-10-26 14:47:36 +02001616 else if (*flag == 'S') {
1617 struct wordlist *c;
1618
1619 if (argc <= 1 || argv[1][0] == '-') {
1620 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1621 usage(progname);
1622 }
1623 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1624 ha_alert("Cannot allocate memory\n");
1625 exit(EXIT_FAILURE);
1626 }
1627 LIST_ADD(&mworker_cli_conf, &c->list);
1628
1629 argv++;
1630 argc--;
1631 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001632 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1633 /* list of pids to finish ('f') or terminate ('t') */
1634
1635 if (flag[1] == 'f')
1636 oldpids_sig = SIGUSR1; /* finish then exit */
1637 else
1638 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001639 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001640 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001641 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1642 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001643 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001644 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001645 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001646 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001647 errno = 0;
1648 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1649 if (errno) {
1650 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1651 flag,
1652 *argv, strerror(errno));
1653 exit(1);
1654 } else if (endptr && strlen(endptr)) {
1655 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001656 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001657 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1658 flag, endptr);
1659 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001660 }
Chris Lane236062f2018-02-05 23:15:44 +00001661 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001662 if (oldpids[nb_oldpids] <= 0)
1663 usage(progname);
1664 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001665 }
1666 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001667 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1668 /* now that's a cfgfile list */
1669 argv++; argc--;
1670 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001671 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001672 ha_alert("Cannot load configuration file/directory %s : %s\n",
1673 *argv,
1674 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001675 exit(1);
1676 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001677 argv++; argc--;
1678 }
1679 break;
1680 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001681 else { /* >=2 args */
1682 argv++; argc--;
1683 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001684 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001685
1686 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001687 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001688 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001689 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001690 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001691 case 'L' :
1692 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1693 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1694 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001695 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001696 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001697 ha_alert("Cannot load configuration file/directory %s : %s\n",
1698 *argv,
1699 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001700 exit(1);
1701 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001702 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001703 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001704 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001705 }
1706 }
1707 }
1708 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001709 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001710 argv++; argc--;
1711 }
1712
Christopher Faulete3a5e352017-10-24 13:53:54 +02001713 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1714 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001715
William Lallemand944e6192018-11-21 15:48:31 +01001716 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001717 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001718 global.mode |= MODE_MWORKER_WAIT;
1719 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001720 }
1721
1722 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1723 atexit_flag = 1;
1724 atexit(reexec_on_failure);
1725 }
1726
Willy Tarreau576132e2011-09-10 19:26:56 +02001727 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001728 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001729 exit(1);
1730 }
1731
Willy Tarreaubaaee002006-06-26 02:48:02 +02001732 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001733
1734 init_default_instance();
1735
William Lallemand944e6192018-11-21 15:48:31 +01001736 /* in wait mode, we don't try to read the configuration files */
1737 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001738 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001739
William Lallemand944e6192018-11-21 15:48:31 +01001740 /* handle cfgfiles that are actually directories */
1741 cfgfiles_expand_directories();
1742
1743 if (LIST_ISEMPTY(&cfg_cfgfiles))
1744 usage(progname);
1745
1746
1747 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1748 int ret;
1749
William Lallemand7b302d82019-05-20 11:15:37 +02001750 if (trash->data)
1751 chunk_appendf(trash, ";");
1752
1753 chunk_appendf(trash, "%s", wl->s);
1754
William Lallemand944e6192018-11-21 15:48:31 +01001755 ret = readcfgfile(wl->s);
1756 if (ret == -1) {
1757 ha_alert("Could not open configuration file %s : %s\n",
1758 wl->s, strerror(errno));
1759 exit(1);
1760 }
1761 if (ret & (ERR_ABORT|ERR_FATAL))
1762 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1763 err_code |= ret;
1764 if (err_code & ERR_ABORT)
1765 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001766 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001767
William Lallemand944e6192018-11-21 15:48:31 +01001768 /* do not try to resolve arguments nor to spot inconsistencies when
1769 * the configuration contains fatal errors caused by files not found
1770 * or failed memory allocations.
1771 */
1772 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1773 ha_alert("Fatal errors found in configuration.\n");
1774 exit(1);
1775 }
William Lallemand7b302d82019-05-20 11:15:37 +02001776 if (trash->data)
1777 setenv("HAPROXY_CFGFILES", trash->area, 1);
1778
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001779 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001780 if (global.mode & MODE_MWORKER) {
1781 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001782 struct mworker_proc *tmproc;
1783
William Lallemand482f9a92019-04-12 16:15:00 +02001784 setenv("HAPROXY_MWORKER", "1", 1);
1785
William Lallemand16dd1b32018-11-19 18:46:18 +01001786 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1787
William Lallemandf3a86832019-04-01 11:29:58 +02001788 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001789 if (!tmproc) {
1790 ha_alert("Cannot allocate process structures.\n");
1791 exit(EXIT_FAILURE);
1792 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001793 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001794 tmproc->reloads = 0;
1795 tmproc->relative_pid = 0;
1796 tmproc->pid = pid;
1797 tmproc->timestamp = start_date.tv_sec;
1798 tmproc->ipc_fd[0] = -1;
1799 tmproc->ipc_fd[1] = -1;
1800
1801 proc_self = tmproc;
1802
1803 LIST_ADDQ(&proc_list, &tmproc->list);
1804 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001805
1806 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001807
William Lallemandf3a86832019-04-01 11:29:58 +02001808 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001809 if (!tmproc) {
1810 ha_alert("Cannot allocate process structures.\n");
1811 exit(EXIT_FAILURE);
1812 }
1813
William Lallemand8f7069a2019-04-12 16:09:23 +02001814 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001815 tmproc->pid = -1;
1816 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001817 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001818 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001819 tmproc->ipc_fd[0] = -1;
1820 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001821
1822 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1823 exit(EXIT_FAILURE);
1824 }
1825
1826 LIST_ADDQ(&proc_list, &tmproc->list);
1827 }
William Lallemand944e6192018-11-21 15:48:31 +01001828 }
1829 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1830 struct wordlist *it, *c;
1831
William Lallemand1b663612018-10-26 14:47:33 +02001832 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001833
William Lallemande7361152018-10-26 14:47:36 +02001834
William Lallemand550db6d2018-11-06 17:37:12 +01001835 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001836
William Lallemand550db6d2018-11-06 17:37:12 +01001837 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001838 ha_alert("Can't create the master's CLI.\n");
1839 exit(EXIT_FAILURE);
1840 }
William Lallemande7361152018-10-26 14:47:36 +02001841
William Lallemand550db6d2018-11-06 17:37:12 +01001842 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1843
1844 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1845 ha_alert("Can't create the master's CLI.\n");
1846 exit(EXIT_FAILURE);
1847 }
1848 LIST_DEL(&c->list);
1849 free(c->s);
1850 free(c);
1851 }
1852 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001853 }
1854
Willy Tarreaubb925012009-07-23 13:36:36 +02001855 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001856 for (px = proxies_list; px; px = px->next) {
1857 struct server *srv;
1858 struct post_proxy_check_fct *ppcf;
1859 struct post_server_check_fct *pscf;
1860
1861 list_for_each_entry(pscf, &post_server_check_list, list) {
1862 for (srv = px->srv; srv; srv = srv->next)
1863 err_code |= pscf->fct(srv);
1864 }
1865 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1866 err_code |= ppcf->fct(px);
1867 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001868 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001869 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001870 exit(1);
1871 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001872
Willy Tarreau0f936722019-04-11 14:47:08 +02001873 pattern_finalize_config();
1874
Willy Tarreau70060452015-12-14 12:46:07 +01001875 /* recompute the amount of per-process memory depending on nbproc and
1876 * the shared SSL cache size (allowed to exist in all processes).
1877 */
1878 if (global.rlimit_memmax_all) {
1879#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1880 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1881
1882 global.rlimit_memmax =
1883 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1884 ssl_cache_bytes) / global.nbproc +
1885 ssl_cache_bytes + 1048575LL) / 1048576LL;
1886#else
1887 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1888#endif
1889 }
1890
Willy Tarreaue5733232019-05-22 19:24:06 +02001891#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001892 err_code |= netns_init();
1893 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001894 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001895 exit(1);
1896 }
1897#endif
1898
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001899 /* Apply server states */
1900 apply_server_state();
1901
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001902 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001903 srv_compute_all_admin_states(px);
1904
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001905 /* Apply servers' configured address */
1906 err_code |= srv_init_addr();
1907 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001908 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001909 exit(1);
1910 }
1911
Willy Tarreaubaaee002006-06-26 02:48:02 +02001912 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001913 struct peers *pr;
1914 struct proxy *px;
1915
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001916 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001917 if (pr->peers_fe)
1918 break;
1919
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001920 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001921 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001922 break;
1923
1924 if (pr || px) {
1925 /* At least one peer or one listener has been found */
1926 qfprintf(stdout, "Configuration file is valid\n");
1927 exit(0);
1928 }
1929 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1930 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001931 }
1932
Emeric Brunc60def82017-09-27 14:59:38 +02001933 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001934 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001935 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001936 exit(1);
1937 }
1938 /* very simple initialization, users will queue the task if needed */
1939 global_listener_queue_task->context = NULL; /* not even a context! */
1940 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001941
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001942 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001943 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001944
Willy Tarreaue6945732016-12-21 19:57:00 +01001945 list_for_each_entry(pcf, &post_check_list, list) {
1946 err_code |= pcf->fct();
1947 if (err_code & (ERR_ABORT|ERR_FATAL))
1948 exit(1);
1949 }
1950
Willy Tarreaubaaee002006-06-26 02:48:02 +02001951 if (cfg_maxconn > 0)
1952 global.maxconn = cfg_maxconn;
1953
Willy Tarreau8d687d82019-03-01 09:39:42 +01001954 if (global.stats_fe)
1955 global.maxsock += global.stats_fe->maxconn;
1956
1957 if (cfg_peers) {
1958 /* peers also need to bypass global maxconn */
1959 struct peers *p = cfg_peers;
1960
1961 for (p = cfg_peers; p; p = p->next)
1962 if (p->peers_fe)
1963 global.maxsock += p->peers_fe->maxconn;
1964 }
1965
Willy Tarreaubaaee002006-06-26 02:48:02 +02001966 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001967 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001968 global.pidfile = strdup(cfg_pidfile);
1969 }
1970
Willy Tarreaud0256482015-01-15 21:45:22 +01001971 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001972 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1973 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1974 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
1975 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01001976 *
1977 * If memmax is set, then it depends on which values are set. If
1978 * maxsslconn is set, we use memmax to determine how many cleartext
1979 * connections may be added, and set maxconn to the sum of the two.
1980 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1981 * the remaining amount of memory between memmax and the cleartext
1982 * connections. If neither are set, then it is considered that all
1983 * connections are SSL-capable, and maxconn is computed based on this,
1984 * then maxsslconn accordingly. We need to know if SSL is used on the
1985 * frontends, backends, or both, because when it's used on both sides,
1986 * we need twice the value for maxsslconn, but we only count the
1987 * handshake once since it is not performed on the two sides at the
1988 * same time (frontend-side is terminated before backend-side begins).
1989 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001990 * ssl_handshake_cost during its initialization. In any case, if
1991 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1992 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001993 */
Willy Tarreauac350932019-03-01 15:43:14 +01001994 ideal_maxconn = compute_ideal_maxconn();
1995
Willy Tarreaud0256482015-01-15 21:45:22 +01001996 if (!global.rlimit_memmax) {
1997 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01001998 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01001999 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2000 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2001 }
2002 }
2003#ifdef USE_OPENSSL
2004 else if (!global.maxconn && !global.maxsslconn &&
2005 (global.ssl_used_frontend || global.ssl_used_backend)) {
2006 /* memmax is set, compute everything automatically. Here we want
2007 * to ensure that all SSL connections will be served. We take
2008 * care of the number of sides where SSL is used, and consider
2009 * the worst case : SSL used on both sides and doing a handshake
2010 * simultaneously. Note that we can't have more than maxconn
2011 * handshakes at a time by definition, so for the worst case of
2012 * two SSL conns per connection, we count a single handshake.
2013 */
2014 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2015 int64_t mem = global.rlimit_memmax * 1048576ULL;
2016
2017 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2018 mem -= global.maxzlibmem;
2019 mem = mem * MEM_USABLE_RATIO;
2020
2021 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02002022 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01002023 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2024 global.ssl_handshake_max_cost); // 1 handshake per connection max
2025
Willy Tarreauac350932019-03-01 15:43:14 +01002026 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002027 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002028#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002029 if (global.maxconn > SYSTEM_MAXCONN)
2030 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002031#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002032 global.maxsslconn = sides * global.maxconn;
2033 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2034 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2035 global.maxconn, global.maxsslconn);
2036 }
2037 else if (!global.maxsslconn &&
2038 (global.ssl_used_frontend || global.ssl_used_backend)) {
2039 /* memmax and maxconn are known, compute maxsslconn automatically.
2040 * maxsslconn being forced, we don't know how many of it will be
2041 * on each side if both sides are being used. The worst case is
2042 * when all connections use only one SSL instance because
2043 * handshakes may be on two sides at the same time.
2044 */
2045 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2046 int64_t mem = global.rlimit_memmax * 1048576ULL;
2047 int64_t sslmem;
2048
2049 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2050 mem -= global.maxzlibmem;
2051 mem = mem * MEM_USABLE_RATIO;
2052
Willy Tarreau87b09662015-04-03 00:22:06 +02002053 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002054 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2055 global.maxsslconn = round_2dig(global.maxsslconn);
2056
2057 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002058 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2059 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2060 "without SSL is %d, but %d was found and SSL is in use.\n",
2061 global.rlimit_memmax,
2062 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2063 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002064 exit(1);
2065 }
2066
2067 if (global.maxsslconn > sides * global.maxconn)
2068 global.maxsslconn = sides * global.maxconn;
2069
2070 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2071 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2072 }
2073#endif
2074 else if (!global.maxconn) {
2075 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2076 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2077 int64_t mem = global.rlimit_memmax * 1048576ULL;
2078 int64_t clearmem;
2079
2080 if (global.ssl_used_frontend || global.ssl_used_backend)
2081 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2082
2083 mem -= global.maxzlibmem;
2084 mem = mem * MEM_USABLE_RATIO;
2085
2086 clearmem = mem;
2087 if (sides)
2088 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2089
Willy Tarreau87b09662015-04-03 00:22:06 +02002090 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01002091 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002092 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002093#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002094 if (global.maxconn > SYSTEM_MAXCONN)
2095 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002096#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002097
2098 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002099 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2100 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2101 "is %d, but %d was found.\n",
2102 global.rlimit_memmax,
2103 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
2104 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002105 exit(1);
2106 }
2107
2108 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2109 if (sides && global.maxsslconn > sides * global.maxconn) {
2110 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2111 "to be limited to %d. Better reduce global.maxsslconn to get more "
2112 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2113 }
2114 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2115 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002116 }
2117
Willy Tarreau5a023f02019-03-01 14:19:31 +01002118 if (!global.maxpipes)
2119 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002120
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002121 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002122 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002123 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002124 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2125 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2126
Emeric Brunece0c332017-12-06 13:51:49 +01002127 /* compute fd used by async engines */
2128 if (global.ssl_used_async_engines) {
2129 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2130 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2131 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002132
Olivier Houchard88698d92019-04-16 19:07:22 +02002133 /* update connection pool thresholds */
2134 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2135 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2136
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002137 proxy_adjust_all_maxconn();
2138
Willy Tarreau1db37712007-06-03 17:16:49 +02002139 if (global.tune.maxpollevents <= 0)
2140 global.tune.maxpollevents = MAX_POLL_EVENTS;
2141
Olivier Houchard1599b802018-05-24 18:59:04 +02002142 if (global.tune.runqueue_depth <= 0)
2143 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2144
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002145 if (global.tune.recv_enough == 0)
2146 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2147
Willy Tarreau27097842015-09-28 13:53:23 +02002148 if (global.tune.maxrewrite < 0)
2149 global.tune.maxrewrite = MAXREWRITE;
2150
Willy Tarreau27a674e2009-08-17 07:23:33 +02002151 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2152 global.tune.maxrewrite = global.tune.bufsize / 2;
2153
Willy Tarreaubaaee002006-06-26 02:48:02 +02002154 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2155 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002156 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002157 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2158 }
2159
William Lallemand095ba4c2017-06-01 17:38:50 +02002160 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002161 /* command line daemon mode inhibits foreground and debug modes mode */
2162 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002163 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002164 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002165
2166 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002167
William Lallemand095ba4c2017-06-01 17:38:50 +02002168 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002169 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002170 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002171 }
2172
William Lallemand095ba4c2017-06-01 17:38:50 +02002173 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002174 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002175 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 +02002176 global.nbproc = 1;
2177 }
2178
2179 if (global.nbproc < 1)
2180 global.nbproc = 1;
2181
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002182 if (global.nbthread < 1)
2183 global.nbthread = 1;
2184
Christopher Faulet3ef26392017-08-29 16:46:57 +02002185 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002186 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002187 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002188 exit(1);
2189 }
2190
Christopher Faulet96d44832017-11-14 22:02:30 +01002191 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002192 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002193 exit(1);
2194 }
2195
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002196 /*
2197 * Note: we could register external pollers here.
2198 * Built-in pollers have been registered before main().
2199 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002200
Willy Tarreau43b78992009-01-25 15:42:27 +01002201 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002202 disable_poller("kqueue");
2203
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002204 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2205 disable_poller("evports");
2206
Willy Tarreau43b78992009-01-25 15:42:27 +01002207 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002208 disable_poller("epoll");
2209
Willy Tarreau43b78992009-01-25 15:42:27 +01002210 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002211 disable_poller("poll");
2212
Willy Tarreau43b78992009-01-25 15:42:27 +01002213 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002214 disable_poller("select");
2215
2216 /* Note: we could disable any poller by name here */
2217
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002218 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002219 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002220 fprintf(stderr, "\n");
2221 list_filters(stderr);
2222 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002223
Willy Tarreau4f60f162007-04-08 16:39:58 +02002224 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002225 ha_alert("No polling mechanism available.\n"
2226 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2227 " is too low on this platform to support maxconn and the number of listeners\n"
2228 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2229 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2230 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2231 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2232 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2233 " check build settings using 'haproxy -vv'.\n\n",
2234 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002235 exit(1);
2236 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002237 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2238 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002239 }
2240
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002241 if (!global.node)
2242 global.node = strdup(hostname);
2243
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002244 if (!hlua_post_init())
2245 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002246
Maxime de Roucy0f503922016-05-13 23:52:55 +02002247 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002248}
2249
Simon Horman6fb82592011-07-15 13:14:11 +09002250static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002251{
Simon Hormanac821422011-07-15 13:14:09 +09002252 struct acl_term_suite *suite, *suiteb;
2253 struct acl_term *term, *termb;
2254
Simon Horman6fb82592011-07-15 13:14:11 +09002255 if (!cond)
2256 return;
2257
2258 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2259 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2260 LIST_DEL(&term->list);
2261 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002262 }
Simon Horman6fb82592011-07-15 13:14:11 +09002263 LIST_DEL(&suite->list);
2264 free(suite);
2265 }
2266
2267 free(cond);
2268}
2269
2270static void deinit_tcp_rules(struct list *rules)
2271{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002272 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002273
2274 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002275 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002276 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002277 free(trule);
2278 }
2279}
2280
Simon Horman6fb82592011-07-15 13:14:11 +09002281static void deinit_stick_rules(struct list *rules)
2282{
2283 struct sticking_rule *rule, *ruleb;
2284
2285 list_for_each_entry_safe(rule, ruleb, rules, list) {
2286 LIST_DEL(&rule->list);
2287 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002288 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002289 free(rule);
2290 }
2291}
2292
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002293void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002294{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002295 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002296 struct cap_hdr *h,*h_next;
2297 struct server *s,*s_next;
2298 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002299 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002300 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002301 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002302 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002303 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002304 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002305 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002306 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002307 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002308 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002309 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002310 struct post_deinit_fct *pdf;
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002311 struct proxy_deinit_fct *pxdf;
2312 struct server_deinit_fct *srvdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002313 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002314
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002315 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002316 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002317 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002318 free(p->id);
2319 free(p->check_req);
2320 free(p->cookie_name);
2321 free(p->cookie_domain);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002322 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002323 free(p->capture_name);
2324 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002325 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002326 if (p->conf.logformat_string != default_http_log_format &&
2327 p->conf.logformat_string != default_tcp_log_format &&
2328 p->conf.logformat_string != clf_http_log_format)
2329 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002330
Willy Tarreau62a61232013-04-12 18:13:46 +02002331 free(p->conf.lfs_file);
2332 free(p->conf.uniqueid_format_string);
2333 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002334 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2335 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002336
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002337 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2338 free(p->conf.logformat_sd_string);
2339 free(p->conf.lfsd_file);
2340
Willy Tarreaua534fea2008-08-03 12:19:50 +02002341 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002342 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002343
Willy Tarreaub80c2302007-11-30 20:51:32 +01002344 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2345 LIST_DEL(&cond->list);
2346 prune_acl_cond(cond);
2347 free(cond);
2348 }
2349
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002350 /* build a list of unique uri_auths */
2351 if (!ua)
2352 ua = p->uri_auth;
2353 else {
2354 /* check if p->uri_auth is unique */
2355 for (uap = ua; uap; uap=uap->next)
2356 if (uap == p->uri_auth)
2357 break;
2358
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002359 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002360 /* add it, if it is */
2361 p->uri_auth->next = ua;
2362 ua = p->uri_auth;
2363 }
2364 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002365
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002366 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2367 LIST_DEL(&acl->list);
2368 prune_acl(acl);
2369 free(acl);
2370 }
2371
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002372 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2373 LIST_DEL(&srule->list);
2374 prune_acl_cond(srule->cond);
2375 free(srule->cond);
2376 free(srule);
2377 }
2378
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002379 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2380 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002381 if (rule->cond) {
2382 prune_acl_cond(rule->cond);
2383 free(rule->cond);
2384 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002385 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002386 free(rule);
2387 }
2388
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002389 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2390 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002391 if (rdr->cond) {
2392 prune_acl_cond(rdr->cond);
2393 free(rdr->cond);
2394 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002395 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002396 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2397 LIST_DEL(&lf->list);
2398 free(lf);
2399 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002400 free(rdr);
2401 }
2402
William Lallemand0f99e342011-10-12 17:50:54 +02002403 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2404 LIST_DEL(&log->list);
2405 free(log);
2406 }
2407
William Lallemand723b73a2012-02-08 16:37:49 +01002408 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2409 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002410 release_sample_expr(lf->expr);
2411 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002412 free(lf);
2413 }
2414
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002415 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2416 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002417 release_sample_expr(lf->expr);
2418 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002419 free(lf);
2420 }
2421
Simon Hormanac821422011-07-15 13:14:09 +09002422 deinit_tcp_rules(&p->tcp_req.inspect_rules);
Kevin Zhu13ebef72019-01-30 16:01:21 +08002423 deinit_tcp_rules(&p->tcp_rep.inspect_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002424 deinit_tcp_rules(&p->tcp_req.l4_rules);
2425
Simon Horman6fb82592011-07-15 13:14:11 +09002426 deinit_stick_rules(&p->storersp_rules);
2427 deinit_stick_rules(&p->sticking_rules);
2428
Willy Tarreaubaaee002006-06-26 02:48:02 +02002429 h = p->req_cap;
2430 while (h) {
2431 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002432 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002433 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002434 free(h);
2435 h = h_next;
2436 }/* end while(h) */
2437
2438 h = p->rsp_cap;
2439 while (h) {
2440 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002441 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002442 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002443 free(h);
2444 h = h_next;
2445 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002446
Willy Tarreaubaaee002006-06-26 02:48:02 +02002447 s = p->srv;
2448 while (s) {
2449 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002450
Willy Tarreauf6562792019-05-07 19:05:35 +02002451 task_destroy(s->check.task);
2452 task_destroy(s->agent.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002453
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002454 if (s->check.wait_list.tasklet)
2455 tasklet_free(s->check.wait_list.tasklet);
2456 if (s->agent.wait_list.tasklet)
2457 tasklet_free(s->agent.wait_list.tasklet);
Dragan Dosen026ef572019-04-30 00:56:20 +02002458
Willy Tarreauf6562792019-05-07 19:05:35 +02002459 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002460
Willy Tarreaua534fea2008-08-03 12:19:50 +02002461 free(s->id);
2462 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002463 free(s->check.bi.area);
2464 free(s->check.bo.area);
2465 free(s->agent.bi.area);
2466 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002467 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002468 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002469 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002470 free(s->idle_conns);
2471 free(s->priv_conns);
2472 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002473 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002474 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002475
2476 if (s->use_ssl || s->check.use_ssl) {
2477 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2478 xprt_get(XPRT_SSL)->destroy_srv(s);
2479 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002480 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002481
2482 list_for_each_entry(srvdf, &server_deinit_list, list)
2483 srvdf->fct(s);
2484
Willy Tarreaubaaee002006-06-26 02:48:02 +02002485 free(s);
2486 s = s_next;
2487 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002488
Willy Tarreau4348fad2012-09-20 16:48:07 +02002489 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002490 /*
2491 * Zombie proxy, the listener just pretend to be up
2492 * because they still hold an opened fd.
2493 * Close it and give the listener its real state.
2494 */
2495 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2496 close(l->fd);
2497 l->state = LI_INIT;
2498 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002499 unbind_listener(l);
2500 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002501 LIST_DEL(&l->by_fe);
2502 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002503 free(l->name);
2504 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002505 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002506 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002507
Willy Tarreau4348fad2012-09-20 16:48:07 +02002508 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002509 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002510 if (bind_conf->xprt->destroy_bind_conf)
2511 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002512 free(bind_conf->file);
2513 free(bind_conf->arg);
2514 LIST_DEL(&bind_conf->by_fe);
2515 free(bind_conf);
2516 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002517
Christopher Fauletd7c91962015-04-30 11:48:27 +02002518 flt_deinit(p);
2519
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002520 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2521 pxdf->fct(p);
2522
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002523 free(p->desc);
2524 free(p->fwdfor_hdr_name);
2525
Willy Tarreauff011f22011-01-06 17:51:27 +01002526 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002527 free_http_res_rules(&p->http_res_rules);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002528 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002529
Willy Tarreaubafbe012017-11-24 17:34:44 +01002530 pool_destroy(p->req_cap_pool);
2531 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002532 if (p->table)
2533 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002534
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002535 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002536 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002537 HA_SPIN_DESTROY(&p0->lbprm.lock);
2538 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002539 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002540 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002541
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002542 while (ua) {
2543 uap = ua;
2544 ua = ua->next;
2545
Willy Tarreaua534fea2008-08-03 12:19:50 +02002546 free(uap->uri_prefix);
2547 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002548 free(uap->node);
2549 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002550
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002551 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002552 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002553
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002554 free(uap);
2555 }
2556
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002557 userlist_free(userlist);
2558
David Carlier834cb2e2015-09-25 12:02:25 +01002559 cfg_unregister_sections();
2560
Christopher Faulet0132d062017-07-26 15:33:35 +02002561 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002562
Willy Tarreaudd815982007-10-16 12:25:14 +02002563 protocol_unbind_all();
2564
Willy Tarreau05554e62016-12-21 20:46:26 +01002565 list_for_each_entry(pdf, &post_deinit_list, list)
2566 pdf->fct();
2567
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002568 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002569 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002570 free(global.chroot); global.chroot = NULL;
2571 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002572 free(global.node); global.node = NULL;
2573 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002574 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002575 task_destroy(global_listener_queue_task); global_listener_queue_task = NULL;
2576 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002577 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002578
William Lallemand0f99e342011-10-12 17:50:54 +02002579 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2580 LIST_DEL(&log->list);
2581 free(log);
2582 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002583 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002584 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002585 LIST_DEL(&wl->list);
2586 free(wl);
2587 }
2588
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002589 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2590 if (bol->must_free)
2591 free((void *)bol->str);
2592 LIST_DEL(&bol->list);
2593 free(bol);
2594 }
2595
Christopher Fauletff2613e2016-11-09 11:36:17 +01002596 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002597 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002598 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002599} /* end deinit() */
2600
William Lallemand72160322018-11-06 17:37:16 +01002601
Willy Tarreau918ff602011-07-25 16:33:49 +02002602/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002603static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002604{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002605 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002606
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002607 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002608 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002609 /* Process a few tasks */
2610 process_runnable_tasks();
2611
William Lallemand1aab50b2018-06-07 09:46:01 +02002612 /* check if we caught some signals and process them in the
2613 first thread */
2614 if (tid == 0)
2615 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002616
Willy Tarreau58b458d2008-06-29 22:40:23 +02002617 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002618 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002619
Willy Tarreau85c459d2018-08-02 10:54:31 +02002620 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002621 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002622 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002623
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002624 /* also stop if we failed to cleanly stop all tasks */
2625 if (killed > 1)
2626 break;
2627
Willy Tarreau10146c92015-04-13 20:44:19 +02002628 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002629 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002630 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002631 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002632 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002633 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002634 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002635 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2636 __ha_barrier_atomic_store();
Olivier Houchardcfbb3e62019-05-29 19:22:43 +02002637 if (global_tasks_mask & tid_bit) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002638 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002639 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002640 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002641 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002642 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002643
Willy Tarreau58b458d2008-06-29 22:40:23 +02002644 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002645 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002646
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002647 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002648 }
2649}
2650
Christopher Faulet1d17c102017-08-29 15:38:48 +02002651static void *run_thread_poll_loop(void *data)
2652{
Willy Tarreau082b6282019-05-22 14:42:12 +02002653 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002654 struct per_thread_init_fct *ptif;
2655 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002656 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002657 static int init_left = 0;
2658 __decl_hathreads(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2659 __decl_hathreads(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002660
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002661 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002662 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002663
Willy Tarreauf6178242019-05-21 19:46:58 +02002664#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002665#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002666 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002667#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002668 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002669#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002670#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002671 /* Now, initialize one thread init at a time. This is better since
2672 * some init code is a bit tricky and may release global resources
2673 * after reallocating them locally. This will also ensure there is
2674 * no race on file descriptors allocation.
2675 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002676#ifdef USE_THREAD
2677 pthread_mutex_lock(&init_mutex);
2678#endif
2679 /* The first thread must set the number of threads left */
2680 if (!init_left)
2681 init_left = global.nbthread;
2682 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002683
Christopher Faulet1d17c102017-08-29 15:38:48 +02002684 tv_update_date(-1,-1);
2685
Willy Tarreau082b6282019-05-22 14:42:12 +02002686 /* per-thread alloc calls performed here are not allowed to snoop on
2687 * other threads, so they are free to initialize at their own rhythm
2688 * as long as they act as if they were alone. None of them may rely
2689 * on resources initialized by the other ones.
2690 */
2691 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2692 if (!ptaf->fct()) {
2693 ha_alert("failed to allocate resources for thread %u.\n", tid);
2694 exit(1);
2695 }
2696 }
2697
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002698 /* per-thread init calls performed here are not allowed to snoop on
2699 * other threads, so they are free to initialize at their own rhythm
2700 * as long as they act as if they were alone.
2701 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002702 list_for_each_entry(ptif, &per_thread_init_list, list) {
2703 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002704 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002705 exit(1);
2706 }
2707 }
2708
Willy Tarreau71092822019-06-10 09:51:04 +02002709 /* enabling protocols will result in fd_insert() calls to be performed,
2710 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002711 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002712 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002713 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002714 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002715
Willy Tarreau34a150c2019-06-11 09:16:41 +02002716#ifdef USE_THREAD
2717 pthread_cond_broadcast(&init_cond);
2718 pthread_mutex_unlock(&init_mutex);
2719
2720 /* now wait for other threads to finish starting */
2721 pthread_mutex_lock(&init_mutex);
2722 while (init_left)
2723 pthread_cond_wait(&init_cond, &init_mutex);
2724 pthread_mutex_unlock(&init_mutex);
2725#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002726
Christopher Faulet1d17c102017-08-29 15:38:48 +02002727 run_poll_loop();
2728
2729 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2730 ptdf->fct();
2731
Willy Tarreau082b6282019-05-22 14:42:12 +02002732 list_for_each_entry(ptff, &per_thread_free_list, list)
2733 ptff->fct();
2734
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002735#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002736 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002737 if (tid > 0)
2738 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002739#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002740 return NULL;
2741}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002742
Willy Tarreaue9b26022011-08-01 20:57:55 +02002743/* This is the global management task for listeners. It enables listeners waiting
2744 * for global resources when there are enough free resource, or at least once in
2745 * a while. It is designed to be called as a task.
2746 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002747static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002748{
2749 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002750 /* queue is empty, nothing to do */
Olivier Houchard859dc802019-08-08 15:47:21 +02002751 if (MT_LIST_ISEMPTY(&global_listener_queue))
Willy Tarreaue9b26022011-08-01 20:57:55 +02002752 goto out;
2753
2754 /* If there are still too many concurrent connections, let's wait for
2755 * some of them to go away. We don't need to re-arm the timer because
2756 * each of them will scan the queue anyway.
2757 */
2758 if (unlikely(actconn >= global.maxconn))
2759 goto out;
2760
2761 /* We should periodically try to enable listeners waiting for a global
2762 * resource here, because it is possible, though very unlikely, that
2763 * they have been blocked by a temporary lack of global resource such
2764 * as a file descriptor or memory and that the temporary condition has
2765 * disappeared.
2766 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002767 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002768
2769 out:
2770 t->expire = next;
2771 task_queue(t);
2772 return t;
2773}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002774
Willy Tarreaubaaee002006-06-26 02:48:02 +02002775int main(int argc, char **argv)
2776{
2777 int err, retry;
2778 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002779 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002780 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002781
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002782 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002783
Willy Tarreauff9c9142019-02-07 10:39:36 +01002784 /* this can only safely be done here, though it's optimized away by
2785 * the compiler.
2786 */
2787 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2788 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2789 "HAProxy was built with value %d, please fix it and rebuild.\n",
2790 LONGBITS, MAX_PROCS);
2791 exit(1);
2792 }
2793
Willy Tarreaubf696402019-03-01 10:09:28 +01002794 /* take a copy of initial limits before we possibly change them */
2795 getrlimit(RLIMIT_NOFILE, &limit);
2796 rlim_fd_cur_at_boot = limit.rlim_cur;
2797 rlim_fd_max_at_boot = limit.rlim_max;
2798
Willy Tarreau5794fb02018-11-25 18:43:29 +01002799 /* process all initcalls in order of potential dependency */
2800 RUN_INITCALLS(STG_PREPARE);
2801 RUN_INITCALLS(STG_LOCK);
2802 RUN_INITCALLS(STG_ALLOC);
2803 RUN_INITCALLS(STG_POOL);
2804 RUN_INITCALLS(STG_REGISTER);
2805 RUN_INITCALLS(STG_INIT);
2806
Emeric Bruncf20bf12010-10-22 16:06:11 +02002807 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002808 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2809 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2810 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002811 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002812
Willy Tarreaue437c442010-03-17 18:02:46 +01002813 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2814 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2815 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002816 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002817 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002818
Willy Tarreaudc23a922011-02-16 11:10:36 +01002819 /* ulimits */
2820 if (!global.rlimit_nofile)
2821 global.rlimit_nofile = global.maxsock;
2822
2823 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002824 limit.rlim_cur = global.rlimit_nofile;
2825 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2826
Willy Tarreaudc23a922011-02-16 11:10:36 +01002827 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002828 /* try to set it to the max possible at least */
2829 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002830 limit.rlim_cur = limit.rlim_max;
2831 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2832 getrlimit(RLIMIT_NOFILE, &limit);
2833
Christopher Faulet767a84b2017-11-24 16:50:31 +01002834 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n", argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Willy Tarreauef635472016-06-21 11:48:18 +02002835 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002836 }
2837 }
2838
2839 if (global.rlimit_memmax) {
2840 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002841 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002842#ifdef RLIMIT_AS
2843 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002844 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2845 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002846 }
2847#else
2848 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002849 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2850 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002851 }
2852#endif
2853 }
2854
Olivier Houchardf73629d2017-04-05 22:33:04 +02002855 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002856 if (strcmp("/dev/null", old_unixsocket) != 0) {
2857 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002858 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002859 if (!(global.mode & MODE_MWORKER))
2860 exit(1);
2861 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002862 }
2863 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002864 get_cur_unixsocket();
2865
Willy Tarreaubaaee002006-06-26 02:48:02 +02002866 /* We will loop at most 100 times with 10 ms delay each time.
2867 * That's at most 1 second. We only send a signal to old pids
2868 * if we cannot grab at least one port.
2869 */
2870 retry = MAX_START_RETRIES;
2871 err = ERR_NONE;
2872 while (retry >= 0) {
2873 struct timeval w;
2874 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002875 /* exit the loop on no error or fatal error */
2876 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002877 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002878 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002879 break;
2880
2881 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2882 * listening sockets. So on those platforms, it would be wiser to
2883 * simply send SIGUSR1, which will not be undoable.
2884 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002885 if (tell_old_pids(SIGTTOU) == 0) {
2886 /* no need to wait if we can't contact old pids */
2887 retry = 0;
2888 continue;
2889 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002890 /* give some time to old processes to stop listening */
2891 w.tv_sec = 0;
2892 w.tv_usec = 10*1000;
2893 select(0, NULL, NULL, NULL, &w);
2894 retry--;
2895 }
2896
2897 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002898 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002899 if (retry != MAX_START_RETRIES && nb_oldpids) {
2900 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002901 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002902 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002903 exit(1);
2904 }
2905
William Lallemand944e6192018-11-21 15:48:31 +01002906 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002907 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002908 /* Note: we don't have to send anything to the old pids because we
2909 * never stopped them. */
2910 exit(1);
2911 }
2912
Emeric Bruncf20bf12010-10-22 16:06:11 +02002913 err = protocol_bind_all(errmsg, sizeof(errmsg));
2914 if ((err & ~ERR_WARN) != ERR_NONE) {
2915 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002916 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002917
Christopher Faulet767a84b2017-11-24 16:50:31 +01002918 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002919 protocol_unbind_all(); /* cleanup everything we can */
2920 if (nb_oldpids)
2921 tell_old_pids(SIGTTIN);
2922 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002923 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002924 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002925 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002926 /* Ok, all listener should now be bound, close any leftover sockets
2927 * the previous process gave us, we don't need them anymore
2928 */
2929 while (xfer_sock_list != NULL) {
2930 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2931 close(xfer_sock_list->fd);
2932 free(xfer_sock_list->iface);
2933 free(xfer_sock_list->namespace);
2934 free(xfer_sock_list);
2935 xfer_sock_list = tmpxfer;
2936 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002937
Willy Tarreaubaaee002006-06-26 02:48:02 +02002938 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002939 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2940 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002941
Willy Tarreaubaaee002006-06-26 02:48:02 +02002942 /* MODE_QUIET can inhibit alerts and warnings below this line */
2943
PiBa-NL149a81a2017-12-25 21:03:31 +01002944 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2945 /* either stdin/out/err are already closed or should stay as they are. */
2946 if ((global.mode & MODE_DAEMON)) {
2947 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2948 global.mode &= ~MODE_VERBOSE;
2949 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2950 }
2951 } else {
2952 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2953 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002954 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002955 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002956 }
2957
2958 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002959 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002960 unlink(global.pidfile);
2961 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2962 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002963 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002964 if (nb_oldpids)
2965 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002966 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002967 exit(1);
2968 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002969 }
2970
Willy Tarreaub38651a2007-03-24 17:24:39 +01002971 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002972 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2973 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002974 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002975 exit(1);
2976 }
2977
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002978 /* If the user is not root, we'll still let him try the configuration
2979 * but we inform him that unexpected behaviour may occur.
2980 */
2981 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002982 ha_warning("[%s.main()] Some options which require full privileges"
2983 " might not work well.\n"
2984 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002985
William Lallemand095ba4c2017-06-01 17:38:50 +02002986 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2987
2988 /* chroot if needed */
2989 if (global.chroot != NULL) {
2990 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002991 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002992 if (nb_oldpids)
2993 tell_old_pids(SIGTTIN);
2994 protocol_unbind_all();
2995 exit(1);
2996 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002997 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002998 }
2999
William Lallemand944e6192018-11-21 15:48:31 +01003000 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003001 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003002
William Lallemand27edc4b2019-05-07 17:49:33 +02003003 /* send a SIGTERM to workers who have a too high reloads number */
3004 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3005 mworker_kill_max_reloads(SIGTERM);
3006
William Lallemand8a361b52017-06-20 11:20:33 +02003007 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3008 nb_oldpids = 0;
3009 free(oldpids);
3010 oldpids = NULL;
3011 }
3012
3013
Willy Tarreaubaaee002006-06-26 02:48:02 +02003014 /* Note that any error at this stage will be fatal because we will not
3015 * be able to restart the old pids.
3016 */
3017
William Lallemand095ba4c2017-06-01 17:38:50 +02003018 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3019 /* setgid / setuid */
3020 if (global.gid) {
3021 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003022 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3023 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003024
3025 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003026 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003027 protocol_unbind_all();
3028 exit(1);
3029 }
3030 }
Michael Schererab012dd2013-01-12 18:35:19 +01003031
William Lallemand095ba4c2017-06-01 17:38:50 +02003032 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003033 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01003034 protocol_unbind_all();
3035 exit(1);
3036 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003037 }
Willy Tarreau636848a2019-04-15 19:38:50 +02003038
3039 /* try our best to re-enable core dumps depending on system capabilities.
3040 * What is addressed here :
3041 * - remove file size limits
3042 * - remove core size limits
3043 * - mark the process dumpable again if it lost it due to user/group
3044 */
3045 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3046 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3047
3048#if defined(RLIMIT_FSIZE)
3049 if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
3050 ha_warning("[%s.main()] Failed to set the raise the maximum file size.\n", argv[0]);
3051#endif
3052
3053#if defined(RLIMIT_CORE)
3054 if (setrlimit(RLIMIT_CORE, &limit) == -1)
3055 ha_warning("[%s.main()] Failed to set the raise the core dump size.\n", argv[0]);
3056#endif
3057
3058#if defined(USE_PRCTL)
3059 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3060 ha_warning("[%s.main()] Failed to set the dumpable flag, no core will be dumped.\n", argv[0]);
3061#endif
3062 }
3063
Willy Tarreaubaaee002006-06-26 02:48:02 +02003064 /* check ulimits */
3065 limit.rlim_cur = limit.rlim_max = 0;
3066 getrlimit(RLIMIT_NOFILE, &limit);
3067 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003068 ha_warning("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3069 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003070 }
3071
William Lallemand944e6192018-11-21 15:48:31 +01003072 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003073 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003074 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003075 int ret = 0;
3076 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003077 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003078
William Lallemand095ba4c2017-06-01 17:38:50 +02003079 /*
3080 * if daemon + mworker: must fork here to let a master
3081 * process live in background before forking children
3082 */
William Lallemand73b85e72017-06-01 17:38:51 +02003083
3084 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3085 && (global.mode & MODE_MWORKER)
3086 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003087 ret = fork();
3088 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003089 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003090 protocol_unbind_all();
3091 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003092 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003093 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003094 } else /* change the process group ID in the child (master process) */
3095 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003096 }
William Lallemande20b6a62017-06-01 17:38:55 +02003097
William Lallemande20b6a62017-06-01 17:38:55 +02003098
William Lallemanddeed7802017-11-06 11:00:04 +01003099 /* if in master-worker mode, write the PID of the father */
3100 if (global.mode & MODE_MWORKER) {
3101 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003102 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003103 if (pidfd >= 0)
3104 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003105 }
3106
Willy Tarreaubaaee002006-06-26 02:48:02 +02003107 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003108 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003109 if (global.mode & MODE_MWORKER)
3110 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003111 for (proc = 0; proc < global.nbproc; proc++) {
3112 ret = fork();
3113 if (ret < 0) {
3114 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3115 protocol_unbind_all();
3116 exit(1); /* there has been an error */
3117 }
3118 else if (ret == 0) /* child breaks here */
3119 break;
William Lallemand944e6192018-11-21 15:48:31 +01003120 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3121 char pidstr[100];
3122 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
3123 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
3124 }
3125 if (global.mode & MODE_MWORKER) {
3126 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003127
William Lallemand220567e2018-11-21 18:04:53 +01003128 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003129 /* find the right mworker_proc */
3130 list_for_each_entry(child, &proc_list, list) {
3131 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003132 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003133 child->timestamp = now.tv_sec;
3134 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003135 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003136 break;
3137 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003138 }
3139 }
William Lallemandbc193052018-09-11 10:06:26 +02003140
William Lallemand944e6192018-11-21 15:48:31 +01003141 relative_pid++; /* each child will get a different one */
3142 pid_bit <<= 1;
3143 }
3144 } else {
3145 /* wait mode */
3146 global.nbproc = 1;
3147 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003148 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003149
3150#ifdef USE_CPU_AFFINITY
3151 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003152 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003153 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003154#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003155 {
3156 cpuset_t cpuset;
3157 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003158 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003159
3160 CPU_ZERO(&cpuset);
3161 while ((i = ffsl(cpu_map)) > 0) {
3162 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003163 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003164 }
3165 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3166 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003167#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003168 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003169#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003170#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003171 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003172 if (pidfd >= 0) {
3173 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3174 close(pidfd);
3175 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003176
3177 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003178 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003179
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003180 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003181 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003182
3183 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3184 (global.mode & MODE_DAEMON)) {
3185 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003186 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3187 stdio_quiet(-1);
3188
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003189 global.mode &= ~MODE_VERBOSE;
3190 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003191 }
3192
William Lallemandb3f2be32018-09-11 10:06:18 +02003193 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003194 /* should never get there */
3195 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003196 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003197#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003198 ssl_free_dh();
3199#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003200 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003201 }
3202
William Lallemandcb11fd22017-06-01 17:38:52 +02003203 /* child must never use the atexit function */
3204 atexit_flag = 0;
3205
William Lallemandbc193052018-09-11 10:06:26 +02003206 /* close useless master sockets */
3207 if (global.mode & MODE_MWORKER) {
3208 struct mworker_proc *child, *it;
3209 master = 0;
3210
William Lallemand309dc9a2018-10-26 14:47:45 +02003211 mworker_cli_proxy_stop();
3212
William Lallemandbc193052018-09-11 10:06:26 +02003213 /* free proc struct of other processes */
3214 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003215 /* close the FD of the master side for all
3216 * workers, we don't need to close the worker
3217 * side of other workers since it's done with
3218 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003219 if (child->ipc_fd[0] >= 0)
3220 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003221 if (child->relative_pid == relative_pid &&
3222 child->reloads == 0) {
3223 /* keep this struct if this is our pid */
3224 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003225 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003226 }
William Lallemandbc193052018-09-11 10:06:26 +02003227 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003228 mworker_free_child(child);
3229 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003230 }
3231 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003232
William Lallemande1340412017-12-28 16:09:36 +01003233 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3234 devnullfd = open("/dev/null", O_RDWR, 0);
3235 if (devnullfd < 0) {
3236 ha_alert("Cannot open /dev/null\n");
3237 exit(EXIT_FAILURE);
3238 }
3239 }
3240
William Lallemand095ba4c2017-06-01 17:38:50 +02003241 /* Must chroot and setgid/setuid in the children */
3242 /* chroot if needed */
3243 if (global.chroot != NULL) {
3244 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003245 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003246 if (nb_oldpids)
3247 tell_old_pids(SIGTTIN);
3248 protocol_unbind_all();
3249 exit(1);
3250 }
3251 }
3252
3253 free(global.chroot);
3254 global.chroot = NULL;
3255
3256 /* setgid / setuid */
3257 if (global.gid) {
3258 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003259 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3260 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003261
3262 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003263 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003264 protocol_unbind_all();
3265 exit(1);
3266 }
3267 }
3268
3269 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003270 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003271 protocol_unbind_all();
3272 exit(1);
3273 }
3274
William Lallemand7f80eb22017-05-26 18:19:55 +02003275 /* pass through every cli socket, and check if it's bound to
3276 * the current process and if it exposes listeners sockets.
3277 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3278 * */
3279
3280 if (global.stats_fe) {
3281 struct bind_conf *bind_conf;
3282
3283 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3284 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3285 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3286 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3287 break;
3288 }
3289 }
3290 }
3291 }
3292
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003293 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003294 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003295 while (px != NULL) {
3296 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003297 if (!(px->bind_proc & (1UL << proc))) {
3298 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3299 zombify_proxy(px);
3300 else
3301 stop_proxy(px);
3302 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003303 }
3304 px = px->next;
3305 }
3306
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003307 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003308 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003309 if (!curpeers->peers_fe)
3310 continue;
3311
3312 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3313 continue;
3314
3315 stop_proxy(curpeers->peers_fe);
3316 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003317 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003318 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003319 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003320 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003321 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003322 curpeers->peers_fe = NULL;
3323 }
3324
William Lallemand2e8fad92018-11-13 16:18:23 +01003325 /*
3326 * This is only done in daemon mode because we might want the
3327 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3328 * we should now close the 3 first FDs to ensure that we can
3329 * detach from the TTY. We MUST NOT do it in other cases since
3330 * it would have already be done, and 0-2 would have been
3331 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003332 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003333 if ((global.mode & MODE_DAEMON) &&
3334 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003335 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003336 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003337 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003338 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3339 }
3340 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003341 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3342 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003343 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003344 }
3345
Christopher Faulete3a5e352017-10-24 13:53:54 +02003346 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003347 /*
3348 * That's it : the central polling loop. Run until we stop.
3349 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003350#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003351 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003352 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003353 int i;
3354
William Lallemand1aab50b2018-06-07 09:46:01 +02003355 /* ensure the signals will be blocked in every thread */
3356 sigfillset(&blocked_sig);
3357 sigdelset(&blocked_sig, SIGPROF);
3358 sigdelset(&blocked_sig, SIGBUS);
3359 sigdelset(&blocked_sig, SIGFPE);
3360 sigdelset(&blocked_sig, SIGILL);
3361 sigdelset(&blocked_sig, SIGSEGV);
3362 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3363
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003364 /* Create nbthread-1 thread. The first thread is the current process */
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003365 thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003366 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003367 pthread_create(&thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003368
Christopher Faulet62519022017-10-16 15:49:32 +02003369#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003370 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003371 if (global.cpu_map.proc_t1[relative_pid-1])
3372 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3373
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003374 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003375 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003376 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003377
Willy Tarreau421f02e2018-01-20 18:19:22 +01003378 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003379 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
Olivier Houchard829aa242017-12-01 18:19:43 +01003380#if defined(__FreeBSD__) || defined(__NetBSD__)
3381 cpuset_t cpuset;
3382#else
3383 cpu_set_t cpuset;
3384#endif
3385 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003386 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003387
3388 CPU_ZERO(&cpuset);
3389
3390 while ((j = ffsl(cpu_map)) > 0) {
3391 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003392 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003393 }
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003394 pthread_setaffinity_np(thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003395 sizeof(cpuset), &cpuset);
3396 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003397 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003398#endif /* !USE_CPU_AFFINITY */
3399
William Lallemand1aab50b2018-06-07 09:46:01 +02003400 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003401 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003402
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003403 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003404 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003405
3406 /* Wait the end of other threads */
3407 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003408 pthread_join(thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003409
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003410#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3411 show_lock_stats();
3412#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003413 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003414#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003415 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003416 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003417#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003418
3419 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003420 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003421
Willy Tarreaubaaee002006-06-26 02:48:02 +02003422 exit(0);
3423}
3424
3425
3426/*
3427 * Local variables:
3428 * c-indent-level: 8
3429 * c-basic-offset: 8
3430 * End:
3431 */