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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreaud8498662020-02-13 07:58:50 +01003 * Copyright 2000-2020 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
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>
Willy Tarreau34eb6712011-10-24 18:15:04 +0200111#include <proto/hdr_idx.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100112#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +0200113#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200114#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200115#include <proto/log.h>
William Lallemand48dfbbd2019-04-01 11:29:53 +0200116#include <proto/mworker.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100117#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200118#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +0100119#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200120#include <proto/proxy.h>
121#include <proto/queue.h>
122#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200123#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200124#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200125#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200126#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200127#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100128#include <proto/vars.h>
Grant Zhang872f9c22017-01-21 01:10:18 +0000129#include <proto/ssl_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200130
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100131/* array of init calls for older platforms */
132DECLARE_INIT_STAGES;
133
Willy Tarreau477ecd82010-01-03 21:12:30 +0100134/* list of config files */
135static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200136int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100137int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100138unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100139unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200140
Olivier Houchard79321b92018-07-26 17:55:11 +0200141volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200142/* global options */
143struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100144 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100145 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100146 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200147 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200148 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100149 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100150 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100151 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200152 .unix_bind = {
153 .ux = {
154 .uid = -1,
155 .gid = -1,
156 .mode = 0,
157 }
158 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200159 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100160 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100161 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreau27097842015-09-28 13:53:23 +0200162 .maxrewrite = -1,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100163 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100164 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200165 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200166 .pool_low_ratio = 20,
167 .pool_high_ratio = 25,
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 */
234struct list global_listener_queue = 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
Willy Tarreau082b6282019-05-22 14:42:12 +0200271/* These functions are called for each thread just after the thread creation
272 * and before running the init functions. They should be used to do per-thread
273 * (re-)allocations that are needed by subsequent functoins. They must return 0
274 * if an error occurred. */
275struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
276struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100277 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200278 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100279};
280
Christopher Faulet415f6112017-07-25 16:52:58 +0200281/* These functions are called for each thread just after the thread creation
282 * and before running the scheduler. They should be used to do per-thread
283 * initializations. They must return 0 if an error occurred. */
284struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
285struct per_thread_init_fct {
286 struct list list;
287 int (*fct)();
288};
289
Willy Tarreau082b6282019-05-22 14:42:12 +0200290/* These functions are called when freeing the global sections at the end of
291 * deinit, after everything is stopped. They don't return anything. They should
292 * not release shared resources that are possibly used by other deinit
293 * functions, only close/release what is private. Use the per_thread_free_list
294 * to release shared resources.
295 */
296struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
297struct post_deinit_fct {
298 struct list list;
299 void (*fct)();
300};
301
302/* These functions are called when freeing the global sections at the end of
303 * deinit, after the thread deinit functions, to release unneeded memory
304 * allocations. They don't return anything, and they work in best effort mode
305 * as their sole goal is to make valgrind mostly happy.
306 */
307struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
308struct per_thread_free_fct {
309 struct list list;
310 int (*fct)();
311};
312
Christopher Faulet415f6112017-07-25 16:52:58 +0200313/* These functions are called for each thread just after the scheduler loop and
314 * before exiting the thread. They don't return anything and, as for post-deinit
315 * functions, they work in best effort mode as their sole goal is to make
316 * valgrind mostly happy. */
317struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
318struct per_thread_deinit_fct {
319 struct list list;
320 void (*fct)();
321};
322
Willy Tarreaubaaee002006-06-26 02:48:02 +0200323/*********************************************************************/
324/* general purpose functions ***************************************/
325/*********************************************************************/
326
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100327/* used to register some build option strings at boot. Set must_free to
328 * non-zero if the string must be freed upon exit.
329 */
330void hap_register_build_opts(const char *str, int must_free)
331{
332 struct build_opts_str *b;
333
334 b = calloc(1, sizeof(*b));
335 if (!b) {
336 fprintf(stderr, "out of memory\n");
337 exit(1);
338 }
339 b->str = str;
340 b->must_free = must_free;
341 LIST_ADDQ(&build_opts_list, &b->list);
342}
343
Willy Tarreaue6945732016-12-21 19:57:00 +0100344/* used to register some initialization functions to call after the checks. */
345void hap_register_post_check(int (*fct)())
346{
347 struct post_check_fct *b;
348
349 b = calloc(1, sizeof(*b));
350 if (!b) {
351 fprintf(stderr, "out of memory\n");
352 exit(1);
353 }
354 b->fct = fct;
355 LIST_ADDQ(&post_check_list, &b->list);
356}
357
Willy Tarreau05554e62016-12-21 20:46:26 +0100358/* used to register some de-initialization functions to call after everything
359 * has stopped.
360 */
361void hap_register_post_deinit(void (*fct)())
362{
363 struct post_deinit_fct *b;
364
365 b = calloc(1, sizeof(*b));
366 if (!b) {
367 fprintf(stderr, "out of memory\n");
368 exit(1);
369 }
370 b->fct = fct;
371 LIST_ADDQ(&post_deinit_list, &b->list);
372}
373
Willy Tarreau082b6282019-05-22 14:42:12 +0200374/* used to register some allocation functions to call for each thread. */
375void hap_register_per_thread_alloc(int (*fct)())
376{
377 struct per_thread_alloc_fct *b;
378
379 b = calloc(1, sizeof(*b));
380 if (!b) {
381 fprintf(stderr, "out of memory\n");
382 exit(1);
383 }
384 b->fct = fct;
385 LIST_ADDQ(&per_thread_alloc_list, &b->list);
386}
387
Christopher Faulet415f6112017-07-25 16:52:58 +0200388/* used to register some initialization functions to call for each thread. */
389void hap_register_per_thread_init(int (*fct)())
390{
391 struct per_thread_init_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(&per_thread_init_list, &b->list);
400}
401
402/* used to register some de-initialization functions to call for each thread. */
403void hap_register_per_thread_deinit(void (*fct)())
404{
405 struct per_thread_deinit_fct *b;
406
407 b = calloc(1, sizeof(*b));
408 if (!b) {
409 fprintf(stderr, "out of memory\n");
410 exit(1);
411 }
412 b->fct = fct;
413 LIST_ADDQ(&per_thread_deinit_list, &b->list);
414}
415
Willy Tarreau082b6282019-05-22 14:42:12 +0200416/* used to register some free functions to call for each thread. */
417void hap_register_per_thread_free(int (*fct)())
418{
419 struct per_thread_free_fct *b;
420
421 b = calloc(1, sizeof(*b));
422 if (!b) {
423 fprintf(stderr, "out of memory\n");
424 exit(1);
425 }
426 b->fct = fct;
427 LIST_ADDQ(&per_thread_free_list, &b->list);
428}
429
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100430static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200431{
Willy Tarreau909b9d82019-01-04 18:20:32 +0100432 printf("HA-Proxy version %s %s - https://haproxy.org/\n", haproxy_version, haproxy_date);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200433}
434
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100435static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100436{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100437 struct build_opts_str *item;
438
Willy Tarreau7b066db2007-12-02 11:28:59 +0100439 printf("Build options :"
440#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100441 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100442#endif
443#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100444 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100445#endif
446#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100447 "\n CC = " BUILD_CC
448#endif
449#ifdef BUILD_CFLAGS
450 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100451#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100452#ifdef BUILD_OPTIONS
453 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100454#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100455#ifdef BUILD_FEATURES
456 "\n\nFeature list : " BUILD_FEATURES
457#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200458 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100459 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200460 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100461 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200462
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100463 list_for_each_entry(item, &build_opts_list, list) {
464 puts(item->str);
465 }
466
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100467 putchar('\n');
468
Willy Tarreaube5b6852009-10-03 18:57:08 +0200469 list_pollers(stdout);
470 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200471 list_mux_proto(stdout);
472 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100473 list_services(stdout);
474 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100475 list_filters(stdout);
476 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100477}
478
Willy Tarreaubaaee002006-06-26 02:48:02 +0200479/*
480 * This function prints the command line usage and exits
481 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100482static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200483{
484 display_version();
485 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200486 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200487 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200488 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100489 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200490 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200491 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200492 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200493 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200494 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100495#if defined(USE_SYSTEMD)
496 " -Ws master-worker mode with systemd notify support.\n"
497#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200498 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200499 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100500 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200501 " -m limits the usable amount of memory (in MB)\n"
502 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200503 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200504 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200505#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200506 " -de disables epoll() usage even when available\n"
507#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200508#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200509 " -dk disables kqueue() usage even when available\n"
510#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200511#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000512 " -dv disables event ports usage even when available\n"
513#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200514#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200515 " -dp disables poll() usage even when available\n"
516#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200517#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100518 " -dS disables splice usage (broken on old kernels)\n"
519#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200520#if defined(USE_GETADDRINFO)
521 " -dG disables getaddrinfo() usage\n"
522#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000523#if defined(SO_REUSEPORT)
524 " -dR disables SO_REUSEPORT usage\n"
525#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100526 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100527 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200528 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200529 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200530 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200531 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100532 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200533 exit(1);
534}
535
536
537
538/*********************************************************************/
539/* more specific functions ***************************************/
540/*********************************************************************/
541
William Lallemand73b85e72017-06-01 17:38:51 +0200542/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
543 * pids the signal was correctly delivered to.
544 */
William Lallemande25473c2019-04-01 11:29:56 +0200545int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200546{
547 int p;
548 int ret = 0;
549 for (p = 0; p < nb_oldpids; p++)
550 if (kill(oldpids[p], sig) == 0)
551 ret++;
552 return ret;
553}
554
William Lallemand75ea0a02017-11-15 19:02:58 +0100555/*
William Lallemand73b85e72017-06-01 17:38:51 +0200556 * remove a pid forom the olpid array and decrease nb_oldpids
557 * return 1 pid was found otherwise return 0
558 */
559
560int delete_oldpid(int pid)
561{
562 int i;
563
564 for (i = 0; i < nb_oldpids; i++) {
565 if (oldpids[i] == pid) {
566 oldpids[i] = oldpids[nb_oldpids - 1];
567 oldpids[nb_oldpids - 1] = 0;
568 nb_oldpids--;
569 return 1;
570 }
571 }
572 return 0;
573}
574
William Lallemand85b0bd92017-06-01 17:38:53 +0200575
576static void get_cur_unixsocket()
577{
578 /* if -x was used, try to update the stat socket if not available anymore */
579 if (global.stats_fe) {
580 struct bind_conf *bind_conf;
581
582 /* pass through all stats socket */
583 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
584 struct listener *l;
585
586 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
587
588 if (l->addr.ss_family == AF_UNIX &&
589 (bind_conf->level & ACCESS_FD_LISTENERS)) {
590 const struct sockaddr_un *un;
591
592 un = (struct sockaddr_un *)&l->addr;
593 /* priority to old_unixsocket */
594 if (!cur_unixsocket) {
595 cur_unixsocket = strdup(un->sun_path);
596 } else {
597 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
598 free(cur_unixsocket);
599 cur_unixsocket = strdup(old_unixsocket);
600 return;
601 }
602 }
603 }
604 }
605 }
606 }
607 if (!cur_unixsocket && old_unixsocket)
608 cur_unixsocket = strdup(old_unixsocket);
609}
610
William Lallemand73b85e72017-06-01 17:38:51 +0200611/*
612 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800613 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200614 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100615void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200616{
617 int next_argc = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200618 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100619 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100620 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200621
622 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100623#if defined(USE_SYSTEMD)
624 if (global.tune.options & GTUNE_USE_SYSTEMD)
625 sd_notify(0, "RELOADING=1");
626#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200627 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
628
William Lallemandbc193052018-09-11 10:06:26 +0200629 mworker_proc_list_to_env(); /* put the children description in the env */
630
William Lallemand7c756a82018-11-26 11:53:40 +0100631 /* during the reload we must ensure that every FDs that can't be
632 * reuse (ie those that are not referenced in the proc_list)
633 * are closed or they will leak. */
634
635 /* close the listeners FD */
636 mworker_cli_proxy_stop();
William Lallemand13b11702019-06-24 17:40:48 +0200637
638 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
639 /* close the poller FD and the thread waker pipe FD */
640 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
641 ptdf->fct();
642 if (fdtab)
643 deinit_pollers();
644 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200645#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand1b7c4dc2019-10-15 14:04:08 +0200646 /* close random device FDs */
647 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100648#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100649
Willy Tarreau8dca1952019-03-01 10:21:55 +0100650 /* restore the initial FD limits */
651 limit.rlim_cur = rlim_fd_cur_at_boot;
652 limit.rlim_max = rlim_fd_max_at_boot;
653 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
654 getrlimit(RLIMIT_NOFILE, &limit);
655 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
656 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
657 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
658 }
659
William Lallemand73b85e72017-06-01 17:38:51 +0200660 /* compute length */
661 while (next_argv[next_argc])
662 next_argc++;
663
William Lallemand85b0bd92017-06-01 17:38:53 +0200664 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand3f128872019-04-01 11:29:59 +0200665 next_argv = realloc(next_argv, (next_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200666 if (next_argv == NULL)
667 goto alloc_error;
668
William Lallemand73b85e72017-06-01 17:38:51 +0200669 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200670 if (mworker_child_nb() > 0) {
671 struct mworker_proc *child;
672
William Lallemand73b85e72017-06-01 17:38:51 +0200673 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200674
675 list_for_each_entry(child, &proc_list, list) {
William Lallemand175125e2019-11-19 17:04:18 +0100676 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200677 continue;
678 next_argv[next_argc] = memprintf(&msg, "%d", child->pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200679 if (next_argv[next_argc] == NULL)
680 goto alloc_error;
681 msg = NULL;
William Lallemand3f128872019-04-01 11:29:59 +0200682 next_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200683 }
684 }
William Lallemand3f128872019-04-01 11:29:59 +0200685
William Lallemand73b85e72017-06-01 17:38:51 +0200686 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200687
William Lallemand2bf6d622017-06-20 11:20:23 +0200688 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200689 if (cur_unixsocket) {
690
William Lallemand2bf6d622017-06-20 11:20:23 +0200691 next_argv[next_argc++] = "-x";
692 next_argv[next_argc++] = (char *)cur_unixsocket;
693 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200694 }
695
Christopher Faulet767a84b2017-11-24 16:50:31 +0100696 ha_warning("Reexecuting Master process\n");
Willy Tarreauf259fcc2019-08-26 10:37:39 +0200697 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100698 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200699
Christopher Faulet767a84b2017-11-24 16:50:31 +0100700 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100701 return;
702
William Lallemand73b85e72017-06-01 17:38:51 +0200703alloc_error:
Joseph Herlant07a08342018-11-15 10:43:05 -0800704 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200705 return;
706}
707
William Lallemandb3f2be32018-09-11 10:06:18 +0200708static void mworker_loop()
709{
710
711#if defined(USE_SYSTEMD)
712 if (global.tune.options & GTUNE_USE_SYSTEMD)
713 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
714#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200715 /* Busy polling makes no sense in the master :-) */
716 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200717
William Lallemandbc193052018-09-11 10:06:26 +0200718 master = 1;
719
Willy Tarreau708c2442019-12-11 14:24:07 +0100720 signal_unregister(SIGTTIN);
721 signal_unregister(SIGTTOU);
William Lallemand0564d412018-11-20 17:36:53 +0100722 signal_unregister(SIGUSR1);
723 signal_unregister(SIGHUP);
724 signal_unregister(SIGQUIT);
725
William Lallemandb3f2be32018-09-11 10:06:18 +0200726 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
727 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
Willy Tarreau708c2442019-12-11 14:24:07 +0100728 signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
729 signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
William Lallemandb3f2be32018-09-11 10:06:18 +0200730 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
731 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
732 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
733 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
734
735 mworker_unblock_signals();
736 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100737 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200738
William Lallemandbc193052018-09-11 10:06:26 +0200739 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
740 some SIGCHLD were lost */
741
William Lallemandb3f2be32018-09-11 10:06:18 +0200742 global.nbthread = 1;
743 relative_pid = 1;
744 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100745 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200746
William Lallemand2672eb92018-12-14 15:52:39 +0100747#ifdef USE_THREAD
748 tid_bit = 1;
749 all_threads_mask = 1;
750#endif
751
William Lallemandb3f2be32018-09-11 10:06:18 +0200752 jobs++; /* this is the "master" job, we want to take care of the
753 signals even if there is no listener so the poll loop don't
754 leave */
755
756 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200757 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200758}
William Lallemandcb11fd22017-06-01 17:38:52 +0200759
760/*
761 * Reexec the process in failure mode, instead of exiting
762 */
763void reexec_on_failure()
764{
765 if (!atexit_flag)
766 return;
767
768 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
769
Christopher Faulet767a84b2017-11-24 16:50:31 +0100770 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200771 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200772}
William Lallemand73b85e72017-06-01 17:38:51 +0200773
774
775/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200776 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
777 * a signal zero to all subscribers. This means that it's as easy as
778 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200779 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100780static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200781{
782 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200783 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100784 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200785}
786
787/*
788 * upon SIGTTOU, we pause everything
789 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100790static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200791{
792 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100793 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200794}
795
796/*
797 * upon SIGTTIN, let's have a soft stop.
798 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100799static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200800{
Willy Tarreaube58c382011-07-24 18:28:10 +0200801 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200802}
803
804/*
805 * this function dumps every server's state when the process receives SIGHUP.
806 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100807static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200808{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100809 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200810
Christopher Faulet767a84b2017-11-24 16:50:31 +0100811 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200812 while (p) {
813 struct server *s = p->srv;
814
815 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
816 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100817 chunk_printf(&trash,
818 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
819 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200820 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100821 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200822 ha_warning("%s\n", trash.area);
823 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200824 s = s->next;
825 }
826
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200827 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
828 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100829 chunk_printf(&trash,
830 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
831 p->id,
832 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 +0200833 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100834 chunk_printf(&trash,
835 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
836 p->id,
837 (p->srv_bck) ? "is running on backup servers" : "has no server available",
838 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 +0200839 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100840 chunk_printf(&trash,
841 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
842 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
843 p->id, p->srv_act, p->srv_bck,
844 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 +0200845 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200846 ha_warning("%s\n", trash.area);
847 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200848
849 p = p->next;
850 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200851}
852
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100853static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200854{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200855 /* dump memory usage then free everything possible */
856 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100857 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200858}
859
William Lallemande1340412017-12-28 16:09:36 +0100860/*
861 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
862 * If <fd> < 0, it opens /dev/null and use it to dup
863 *
864 * In the case of chrooting, you have to open /dev/null before the chroot, and
865 * pass the <fd> to this function
866 */
867static void stdio_quiet(int fd)
868{
869 if (fd < 0)
870 fd = open("/dev/null", O_RDWR, 0);
871
872 if (fd > -1) {
873 fclose(stdin);
874 fclose(stdout);
875 fclose(stderr);
876
877 dup2(fd, 0);
878 dup2(fd, 1);
879 dup2(fd, 2);
880 if (fd > 2)
881 close(fd);
882 return;
883 }
884
885 ha_alert("Cannot open /dev/null\n");
886 exit(EXIT_FAILURE);
887}
888
889
Joseph Herlant03420902018-11-15 10:41:50 -0800890/* This function checks if cfg_cfgfiles contains directories.
891 * If it finds one, it adds all the files (and only files) it contains
892 * in cfg_cfgfiles in place of the directory (and removes the directory).
893 * It adds the files in lexical order.
894 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200895 * It doesn't add files with name starting with '.'
896 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100897static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200898{
899 struct wordlist *wl, *wlb;
900 char *err = NULL;
901
902 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
903 struct stat file_stat;
904 struct dirent **dir_entries = NULL;
905 int dir_entries_nb;
906 int dir_entries_it;
907
908 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100909 ha_alert("Cannot open configuration file/directory %s : %s\n",
910 wl->s,
911 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200912 exit(1);
913 }
914
915 if (!S_ISDIR(file_stat.st_mode))
916 continue;
917
918 /* from this point wl->s is a directory */
919
920 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
921 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100922 ha_alert("Cannot open configuration directory %s : %s\n",
923 wl->s,
924 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200925 exit(1);
926 }
927
928 /* for each element in the directory wl->s */
929 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
930 struct dirent *dir_entry = dir_entries[dir_entries_it];
931 char *filename = NULL;
932 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
933
934 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -0800935 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200936 */
937 if (dir_entry->d_name[0] == '.' ||
938 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
939 goto next_dir_entry;
940
941 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100942 ha_alert("Cannot load configuration files %s : out of memory.\n",
943 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200944 exit(1);
945 }
946
947 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100948 ha_alert("Cannot open configuration file %s : %s\n",
949 wl->s,
950 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200951 exit(1);
952 }
953
954 /* don't add anything else than regular file in cfg_cfgfiles
955 * this way we avoid loops
956 */
957 if (!S_ISREG(file_stat.st_mode))
958 goto next_dir_entry;
959
960 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100961 ha_alert("Cannot load configuration files %s : %s\n",
962 filename,
963 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200964 exit(1);
965 }
966
967next_dir_entry:
968 free(filename);
969 free(dir_entry);
970 }
971
972 free(dir_entries);
973
974 /* remove the current directory (wl) from cfg_cfgfiles */
975 free(wl->s);
976 LIST_DEL(&wl->list);
977 free(wl);
978 }
979
980 free(err);
981}
982
Olivier Houchardf73629d2017-04-05 22:33:04 +0200983static int get_old_sockets(const char *unixsocket)
984{
985 char *cmsgbuf = NULL, *tmpbuf = NULL;
986 int *tmpfd = NULL;
987 struct sockaddr_un addr;
988 struct cmsghdr *cmsg;
989 struct msghdr msghdr;
990 struct iovec iov;
991 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +0200992 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +0200993 int sock = -1;
994 int ret = -1;
995 int ret2 = -1;
996 int fd_nb;
997 int got_fd = 0;
998 int i = 0;
999 size_t maxoff = 0, curoff = 0;
1000
1001 memset(&msghdr, 0, sizeof(msghdr));
1002 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1003 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001004 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001005 goto out;
1006 }
1007 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1008 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001009 ha_warning("Failed to connect to the old process socket '%s'\n",
1010 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001011 goto out;
1012 }
Willy Tarreaud668dcf2019-12-11 16:29:10 +01001013 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path) - 1);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001014 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1015 addr.sun_family = PF_UNIX;
1016 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1017 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001018 ha_warning("Failed to connect to the old process socket '%s'\n",
1019 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001020 goto out;
1021 }
Olivier Houchard54740872017-04-06 14:45:14 +02001022 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001023 iov.iov_base = &fd_nb;
1024 iov.iov_len = sizeof(fd_nb);
1025 msghdr.msg_iov = &iov;
1026 msghdr.msg_iovlen = 1;
1027 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1028 /* First, get the number of file descriptors to be received */
1029 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001030 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001031 goto out;
1032 }
1033 if (fd_nb == 0) {
1034 ret = 0;
1035 goto out;
1036 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001037 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001038 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001039 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001040 goto out;
1041 }
1042 tmpfd = malloc(fd_nb * sizeof(int));
1043 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001044 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001045 goto out;
1046 }
1047 msghdr.msg_control = cmsgbuf;
1048 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001049 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001050 do {
1051 int ret3;
1052
1053 iov.iov_base = tmpbuf + curoff;
1054 ret = recvmsg(sock, &msghdr, 0);
1055 if (ret == -1 && errno == EINTR)
1056 continue;
1057 if (ret <= 0)
1058 break;
1059 /* Send an ack to let the sender know we got the sockets
1060 * and it can send some more
1061 */
1062 do {
1063 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1064 } while (ret3 == -1 && errno == EINTR);
1065 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1066 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1067 if (cmsg->cmsg_level == SOL_SOCKET &&
1068 cmsg->cmsg_type == SCM_RIGHTS) {
1069 size_t totlen = cmsg->cmsg_len -
1070 CMSG_LEN(0);
1071 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001072 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001073 goto out;
1074 }
1075 /*
1076 * Be paranoid and use memcpy() to avoid any
1077 * potential alignement issue.
1078 */
1079 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1080 got_fd += totlen / sizeof(int);
1081 }
1082 }
1083 curoff += ret;
1084 } while (got_fd < fd_nb);
1085
1086 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001087 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1088 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001089 goto out;
1090 }
1091 maxoff = curoff;
1092 curoff = 0;
1093 for (i = 0; i < got_fd; i++) {
1094 int fd = tmpfd[i];
1095 socklen_t socklen;
1096 int len;
1097
1098 xfer_sock = calloc(1, sizeof(*xfer_sock));
1099 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001100 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001101 break;
1102 }
1103 xfer_sock->fd = -1;
1104
1105 socklen = sizeof(xfer_sock->addr);
1106 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001107 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001108 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001109 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001110 continue;
1111 }
1112 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001113 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001114 goto out;
1115 }
1116 len = tmpbuf[curoff++];
1117 if (len > 0) {
1118 /* We have a namespace */
1119 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001120 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001121 goto out;
1122 }
1123 xfer_sock->namespace = malloc(len + 1);
1124 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001125 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001126 goto out;
1127 }
1128 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1129 xfer_sock->namespace[len] = 0;
1130 curoff += len;
1131 }
1132 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001133 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001134 goto out;
1135 }
1136 len = tmpbuf[curoff++];
1137 if (len > 0) {
1138 /* We have an interface */
1139 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001140 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001141 goto out;
1142 }
1143 xfer_sock->iface = malloc(len + 1);
1144 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001145 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001146 goto out;
1147 }
1148 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001149 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001150 curoff += len;
1151 }
1152 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001153 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001154 goto out;
1155 }
1156 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1157 sizeof(xfer_sock->options));
1158 curoff += sizeof(xfer_sock->options);
1159
1160 xfer_sock->fd = fd;
1161 if (xfer_sock_list)
1162 xfer_sock_list->prev = xfer_sock;
1163 xfer_sock->next = xfer_sock_list;
1164 xfer_sock->prev = NULL;
1165 xfer_sock_list = xfer_sock;
1166 xfer_sock = NULL;
1167 }
1168
1169 ret2 = 0;
1170out:
1171 /* If we failed midway make sure to close the remaining
1172 * file descriptors
1173 */
1174 if (tmpfd != NULL && i < got_fd) {
1175 for (; i < got_fd; i++) {
1176 close(tmpfd[i]);
1177 }
1178 }
1179 free(tmpbuf);
1180 free(tmpfd);
1181 free(cmsgbuf);
1182 if (sock != -1)
1183 close(sock);
1184 if (xfer_sock) {
1185 free(xfer_sock->namespace);
1186 free(xfer_sock->iface);
1187 if (xfer_sock->fd != -1)
1188 close(xfer_sock->fd);
1189 free(xfer_sock);
1190 }
1191 return (ret2);
1192}
1193
Willy Tarreaubaaee002006-06-26 02:48:02 +02001194/*
William Lallemand73b85e72017-06-01 17:38:51 +02001195 * copy and cleanup the current argv
1196 * Remove the -sf /-st parameters
1197 * Return an allocated copy of argv
1198 */
1199
1200static char **copy_argv(int argc, char **argv)
1201{
1202 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001203 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001204
1205 newargv = calloc(argc + 2, sizeof(char *));
1206 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001207 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001208 return NULL;
1209 }
1210
William Lallemand2bf6d622017-06-20 11:20:23 +02001211 while (i < argc) {
1212 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001213 if (i > 0 && argv[i][0] == '-' &&
1214 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001215 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001216 i++;
1217 while (i < argc && argv[i][0] != '-') {
1218 i++;
1219 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001220 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001221 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001222
1223 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001224 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001225
William Lallemand73b85e72017-06-01 17:38:51 +02001226 return newargv;
1227}
1228
Willy Tarreau5a023f02019-03-01 14:19:31 +01001229/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1230 * setting, and returns it. It may return -1 meaning "unlimited" if some
1231 * unlimited proxies have been found and the global.maxconn value is not yet
1232 * set. It may also return a value greater than maxconn if it's not yet set.
1233 * Note that a value of zero means there is no need for pipes. -1 is never
1234 * returned if global.maxconn is valid.
1235 */
1236static int compute_ideal_maxpipes()
1237{
1238 struct proxy *cur;
1239 int nbfe = 0, nbbe = 0;
1240 int unlimited = 0;
1241 int pipes;
1242 int max;
1243
1244 for (cur = proxies_list; cur; cur = cur->next) {
1245 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1246 if (cur->cap & PR_CAP_FE) {
1247 max = cur->maxconn;
1248 nbfe += max;
1249 if (!max) {
1250 unlimited = 1;
1251 break;
1252 }
1253 }
1254 if (cur->cap & PR_CAP_BE) {
1255 max = cur->fullconn ? cur->fullconn : global.maxconn;
1256 nbbe += max;
1257 if (!max) {
1258 unlimited = 1;
1259 break;
1260 }
1261 }
1262 }
1263 }
1264
1265 pipes = MAX(nbfe, nbbe);
1266 if (global.maxconn) {
1267 if (pipes > global.maxconn || unlimited)
1268 pipes = global.maxconn;
1269 } else if (unlimited) {
1270 pipes = -1;
1271 }
1272
1273 return pipes >= 4 ? pipes / 4 : pipes;
1274}
1275
Willy Tarreauac350932019-03-01 15:43:14 +01001276/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1277 * rlimits and computes an ideal maxconn. It's meant to be called only when
1278 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001279 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1280 * default 100) is returned as it is expected that it will even run on tight
1281 * environments, and will maintain compatibility with previous packages that
1282 * used to rely on this value as the default one. The system will emit a
1283 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001284 */
1285static int compute_ideal_maxconn()
1286{
1287 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1288 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1289 int pipes = compute_ideal_maxpipes();
1290 int remain = rlim_fd_cur_at_boot;
1291 int maxconn;
1292
1293 /* we have to take into account these elements :
1294 * - number of engine_fds, which inflates the number of FD needed per
1295 * connection by this number.
1296 * - number of pipes per connection on average : for the unlimited
1297 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1298 * fixed value of 2*pipes.
1299 * - two FDs per connection
1300 */
1301
1302 /* subtract listeners and checks */
1303 remain -= global.maxsock;
1304
Willy Tarreau3f200852019-03-14 19:13:17 +01001305 /* one epoll_fd/kqueue_fd per thread */
1306 remain -= global.nbthread;
1307
1308 /* one wake-up pipe (2 fd) per thread */
1309 remain -= 2 * global.nbthread;
1310
Willy Tarreauac350932019-03-01 15:43:14 +01001311 /* Fixed pipes values : we only subtract them if they're not larger
1312 * than the remaining FDs because pipes are optional.
1313 */
1314 if (pipes >= 0 && pipes * 2 < remain)
1315 remain -= pipes * 2;
1316
1317 if (pipes < 0) {
1318 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1319 * = maxconn * (2 + 0.5 + engine_fds)
1320 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1321 */
1322 maxconn = 2 * remain / (5 + 2 * engine_fds);
1323 } else {
1324 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1325 * = maxconn * (2 + engine_fds)
1326 */
1327 maxconn = remain / (2 + engine_fds);
1328 }
1329
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001330 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001331}
1332
William Lallemand73b85e72017-06-01 17:38:51 +02001333/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001334 * This function initializes all the necessary variables. It only returns
1335 * if everything is OK. If something fails, it exits.
1336 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001337static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001338{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001339 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001340 char *tmp;
1341 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001342 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001343 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001344 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001345 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001346 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001347 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001348 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001349 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001350
Christopher Faulete3a5e352017-10-24 13:53:54 +02001351 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001352 next_argv = copy_argv(argc, argv);
1353
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001354 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001355 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001356 exit(1);
1357 }
David du Colombier7af46052012-05-16 14:16:48 +02001358
Emeric Brun2b920a12010-09-23 18:30:22 +02001359 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1360 * the string in case of truncation, and at least FreeBSD appears not to do
1361 * it.
1362 */
1363 memset(hostname, 0, sizeof(hostname));
1364 gethostname(hostname, sizeof(hostname) - 1);
1365 memset(localpeer, 0, sizeof(localpeer));
1366 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001367 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001368
William Lallemand8e16e7a2020-01-14 17:58:18 +01001369 /* we were in mworker mode, we should restart in mworker mode */
1370 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
1371 global.mode |= MODE_MWORKER;
1372
Willy Tarreaubaaee002006-06-26 02:48:02 +02001373 /*
1374 * Initialize the previously static variables.
1375 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001376
Willy Tarreau173d9952018-01-26 21:48:23 +01001377 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001378 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001379
Willy Tarreaubaaee002006-06-26 02:48:02 +02001380
1381#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001382 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001383#endif
1384
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001385 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001386 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001387 start_date = now;
1388
Willy Tarreau84310e22014-02-14 11:59:04 +01001389 srandom(now_ms - getpid());
1390
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001391 if (init_acl() != 0)
1392 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001393
Willy Tarreau8280d642009-09-23 23:37:52 +02001394 /* warning, we init buffers later */
Willy Tarreau04f1e2d2018-09-10 18:04:24 +02001395 if (!init_http(&err_msg)) {
1396 ha_alert("%s. Aborting.\n", err_msg);
1397 free(err_msg);
1398 abort();
1399 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001400
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001401 /* Initialise lua. */
1402 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001403
Christopher Fauletff2613e2016-11-09 11:36:17 +01001404 /* Initialize process vars */
1405 vars_init(&global.vars, SCOPE_PROC);
1406
Willy Tarreau43b78992009-01-25 15:42:27 +01001407 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001408#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001409 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001410#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001411#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001412 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001413#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001414#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001415 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001416#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001417#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001418 global.tune.options |= GTUNE_USE_EVPORTS;
1419#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001420#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001421 global.tune.options |= GTUNE_USE_SPLICE;
1422#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001423#if defined(USE_GETADDRINFO)
1424 global.tune.options |= GTUNE_USE_GAI;
1425#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001426#if defined(SO_REUSEPORT)
1427 global.tune.options |= GTUNE_USE_REUSEPORT;
1428#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001429
1430 pid = getpid();
1431 progname = *argv;
1432 while ((tmp = strchr(progname, '/')) != NULL)
1433 progname = tmp + 1;
1434
Kevinm48936af2010-12-22 16:08:21 +00001435 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001436 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001437
Willy Tarreaubaaee002006-06-26 02:48:02 +02001438 argc--; argv++;
1439 while (argc > 0) {
1440 char *flag;
1441
1442 if (**argv == '-') {
1443 flag = *argv+1;
1444
1445 /* 1 arg */
1446 if (*flag == 'v') {
1447 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001448 if (flag[1] == 'v') /* -vv */
1449 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001450 exit(0);
1451 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001452#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001453 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001454 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001455#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001456#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001457 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001458 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001459#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001460#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001461 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001462 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001463#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001464#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001465 else if (*flag == 'd' && flag[1] == 'v')
1466 global.tune.options &= ~GTUNE_USE_EVPORTS;
1467#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001468#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001469 else if (*flag == 'd' && flag[1] == 'S')
1470 global.tune.options &= ~GTUNE_USE_SPLICE;
1471#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001472#if defined(USE_GETADDRINFO)
1473 else if (*flag == 'd' && flag[1] == 'G')
1474 global.tune.options &= ~GTUNE_USE_GAI;
1475#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001476#if defined(SO_REUSEPORT)
1477 else if (*flag == 'd' && flag[1] == 'R')
1478 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1479#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001480 else if (*flag == 'd' && flag[1] == 'V')
1481 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001482 else if (*flag == 'V')
1483 arg_mode |= MODE_VERBOSE;
1484 else if (*flag == 'd' && flag[1] == 'b')
1485 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001486 else if (*flag == 'd' && flag[1] == 'M')
1487 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001488 else if (*flag == 'd' && flag[1] == 'r')
1489 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001490 else if (*flag == 'd')
1491 arg_mode |= MODE_DEBUG;
1492 else if (*flag == 'c')
1493 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001494 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001495 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001496 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001497 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001498#if defined(USE_SYSTEMD)
1499 global.tune.options |= GTUNE_USE_SYSTEMD;
1500#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001501 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 +01001502 usage(progname);
1503#endif
1504 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001505 else if (*flag == 'W')
1506 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001507 else if (*flag == 'q')
1508 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001509 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001510 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001511 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001512 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001513 }
William Lallemand4fc09692017-06-19 16:37:19 +02001514 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001515 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001516 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001517
Olivier Houchardf73629d2017-04-05 22:33:04 +02001518 argv++;
1519 argc--;
1520 }
William Lallemande7361152018-10-26 14:47:36 +02001521 else if (*flag == 'S') {
1522 struct wordlist *c;
1523
1524 if (argc <= 1 || argv[1][0] == '-') {
1525 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1526 usage(progname);
1527 }
1528 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1529 ha_alert("Cannot allocate memory\n");
1530 exit(EXIT_FAILURE);
1531 }
1532 LIST_ADD(&mworker_cli_conf, &c->list);
1533
1534 argv++;
1535 argc--;
1536 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001537 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1538 /* list of pids to finish ('f') or terminate ('t') */
1539
1540 if (flag[1] == 'f')
1541 oldpids_sig = SIGUSR1; /* finish then exit */
1542 else
1543 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001544 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001545 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001546 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1547 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001548 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001549 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001550 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001551 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001552 errno = 0;
1553 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1554 if (errno) {
1555 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1556 flag,
1557 *argv, strerror(errno));
1558 exit(1);
1559 } else if (endptr && strlen(endptr)) {
1560 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001561 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001562 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1563 flag, endptr);
1564 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001565 }
Chris Lane236062f2018-02-05 23:15:44 +00001566 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001567 if (oldpids[nb_oldpids] <= 0)
1568 usage(progname);
1569 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001570 }
1571 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001572 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1573 /* now that's a cfgfile list */
1574 argv++; argc--;
1575 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001576 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001577 ha_alert("Cannot load configuration file/directory %s : %s\n",
1578 *argv,
1579 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001580 exit(1);
1581 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001582 argv++; argc--;
1583 }
1584 break;
1585 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001586 else { /* >=2 args */
1587 argv++; argc--;
1588 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001589 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001590
1591 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001592 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001593 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001594 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001595 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001596 case 'L' :
1597 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1598 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1599 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001600 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001601 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001602 ha_alert("Cannot load configuration file/directory %s : %s\n",
1603 *argv,
1604 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001605 exit(1);
1606 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001607 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001608 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001609 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001610 }
1611 }
1612 }
1613 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001614 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001615 argv++; argc--;
1616 }
1617
Christopher Faulete3a5e352017-10-24 13:53:54 +02001618 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1619 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001620
William Lallemand944e6192018-11-21 15:48:31 +01001621 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001622 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001623 global.mode |= MODE_MWORKER_WAIT;
1624 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001625 }
1626
1627 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1628 atexit_flag = 1;
1629 atexit(reexec_on_failure);
1630 }
1631
Willy Tarreau576132e2011-09-10 19:26:56 +02001632 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001633 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001634 exit(1);
1635 }
1636
Willy Tarreaubaaee002006-06-26 02:48:02 +02001637 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001638
1639 init_default_instance();
1640
William Lallemand944e6192018-11-21 15:48:31 +01001641 /* in wait mode, we don't try to read the configuration files */
1642 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001643 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001644
William Lallemand944e6192018-11-21 15:48:31 +01001645 /* handle cfgfiles that are actually directories */
1646 cfgfiles_expand_directories();
1647
1648 if (LIST_ISEMPTY(&cfg_cfgfiles))
1649 usage(progname);
1650
1651
1652 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1653 int ret;
1654
William Lallemand7b302d82019-05-20 11:15:37 +02001655 if (trash->data)
1656 chunk_appendf(trash, ";");
1657
1658 chunk_appendf(trash, "%s", wl->s);
1659
William Lallemand944e6192018-11-21 15:48:31 +01001660 ret = readcfgfile(wl->s);
1661 if (ret == -1) {
1662 ha_alert("Could not open configuration file %s : %s\n",
1663 wl->s, strerror(errno));
1664 exit(1);
1665 }
1666 if (ret & (ERR_ABORT|ERR_FATAL))
1667 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1668 err_code |= ret;
1669 if (err_code & ERR_ABORT)
1670 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001671 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001672
William Lallemand944e6192018-11-21 15:48:31 +01001673 /* do not try to resolve arguments nor to spot inconsistencies when
1674 * the configuration contains fatal errors caused by files not found
1675 * or failed memory allocations.
1676 */
1677 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1678 ha_alert("Fatal errors found in configuration.\n");
1679 exit(1);
1680 }
William Lallemand7b302d82019-05-20 11:15:37 +02001681 if (trash->data)
1682 setenv("HAPROXY_CFGFILES", trash->area, 1);
1683
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001684 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001685 if (global.mode & MODE_MWORKER) {
1686 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001687 struct mworker_proc *tmproc;
1688
William Lallemand482f9a92019-04-12 16:15:00 +02001689 setenv("HAPROXY_MWORKER", "1", 1);
1690
William Lallemand16dd1b32018-11-19 18:46:18 +01001691 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1692
William Lallemandf3a86832019-04-01 11:29:58 +02001693 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001694 if (!tmproc) {
1695 ha_alert("Cannot allocate process structures.\n");
1696 exit(EXIT_FAILURE);
1697 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001698 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001699 tmproc->reloads = 0;
1700 tmproc->relative_pid = 0;
1701 tmproc->pid = pid;
1702 tmproc->timestamp = start_date.tv_sec;
1703 tmproc->ipc_fd[0] = -1;
1704 tmproc->ipc_fd[1] = -1;
1705
1706 proc_self = tmproc;
1707
1708 LIST_ADDQ(&proc_list, &tmproc->list);
1709 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001710
1711 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001712
William Lallemandf3a86832019-04-01 11:29:58 +02001713 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001714 if (!tmproc) {
1715 ha_alert("Cannot allocate process structures.\n");
1716 exit(EXIT_FAILURE);
1717 }
1718
William Lallemand8f7069a2019-04-12 16:09:23 +02001719 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001720 tmproc->pid = -1;
1721 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001722 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001723 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001724 tmproc->ipc_fd[0] = -1;
1725 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001726
1727 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1728 exit(EXIT_FAILURE);
1729 }
1730
1731 LIST_ADDQ(&proc_list, &tmproc->list);
1732 }
William Lallemand944e6192018-11-21 15:48:31 +01001733 }
1734 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1735 struct wordlist *it, *c;
1736
William Lallemand1b663612018-10-26 14:47:33 +02001737 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001738
William Lallemande7361152018-10-26 14:47:36 +02001739
William Lallemand550db6d2018-11-06 17:37:12 +01001740 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001741
William Lallemand550db6d2018-11-06 17:37:12 +01001742 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001743 ha_alert("Can't create the master's CLI.\n");
1744 exit(EXIT_FAILURE);
1745 }
William Lallemande7361152018-10-26 14:47:36 +02001746
William Lallemand550db6d2018-11-06 17:37:12 +01001747 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1748
1749 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1750 ha_alert("Can't create the master's CLI.\n");
1751 exit(EXIT_FAILURE);
1752 }
1753 LIST_DEL(&c->list);
1754 free(c->s);
1755 free(c);
1756 }
1757 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001758 }
1759
Willy Tarreaubb925012009-07-23 13:36:36 +02001760 err_code |= check_config_validity();
1761 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001762 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001763 exit(1);
1764 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001765
Willy Tarreau0f936722019-04-11 14:47:08 +02001766 pattern_finalize_config();
1767
Willy Tarreau70060452015-12-14 12:46:07 +01001768 /* recompute the amount of per-process memory depending on nbproc and
1769 * the shared SSL cache size (allowed to exist in all processes).
1770 */
1771 if (global.rlimit_memmax_all) {
1772#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1773 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1774
1775 global.rlimit_memmax =
1776 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1777 ssl_cache_bytes) / global.nbproc +
1778 ssl_cache_bytes + 1048575LL) / 1048576LL;
1779#else
1780 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1781#endif
1782 }
1783
Willy Tarreaue5733232019-05-22 19:24:06 +02001784#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001785 err_code |= netns_init();
1786 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001787 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001788 exit(1);
1789 }
1790#endif
1791
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001792 /* Apply server states */
1793 apply_server_state();
1794
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001795 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001796 srv_compute_all_admin_states(px);
1797
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001798 /* Apply servers' configured address */
1799 err_code |= srv_init_addr();
1800 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001801 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001802 exit(1);
1803 }
1804
Willy Tarreaubaaee002006-06-26 02:48:02 +02001805 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001806 struct peers *pr;
1807 struct proxy *px;
1808
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001809 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001810 if (pr->peers_fe)
1811 break;
1812
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001813 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001814 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001815 break;
1816
1817 if (pr || px) {
1818 /* At least one peer or one listener has been found */
1819 qfprintf(stdout, "Configuration file is valid\n");
1820 exit(0);
1821 }
1822 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1823 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001824 }
1825
Emeric Brunc60def82017-09-27 14:59:38 +02001826 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001827 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001828 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001829 exit(1);
1830 }
1831 /* very simple initialization, users will queue the task if needed */
1832 global_listener_queue_task->context = NULL; /* not even a context! */
1833 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001834
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001835 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001836 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001837
Willy Tarreaue6945732016-12-21 19:57:00 +01001838 list_for_each_entry(pcf, &post_check_list, list) {
1839 err_code |= pcf->fct();
1840 if (err_code & (ERR_ABORT|ERR_FATAL))
1841 exit(1);
1842 }
1843
Willy Tarreaubaaee002006-06-26 02:48:02 +02001844 if (cfg_maxconn > 0)
1845 global.maxconn = cfg_maxconn;
1846
Willy Tarreau8d687d82019-03-01 09:39:42 +01001847 if (global.stats_fe)
1848 global.maxsock += global.stats_fe->maxconn;
1849
1850 if (cfg_peers) {
1851 /* peers also need to bypass global maxconn */
1852 struct peers *p = cfg_peers;
1853
1854 for (p = cfg_peers; p; p = p->next)
1855 if (p->peers_fe)
1856 global.maxsock += p->peers_fe->maxconn;
1857 }
1858
Willy Tarreaubaaee002006-06-26 02:48:02 +02001859 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001860 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001861 global.pidfile = strdup(cfg_pidfile);
1862 }
1863
Willy Tarreaud0256482015-01-15 21:45:22 +01001864 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001865 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1866 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1867 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
1868 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01001869 *
1870 * If memmax is set, then it depends on which values are set. If
1871 * maxsslconn is set, we use memmax to determine how many cleartext
1872 * connections may be added, and set maxconn to the sum of the two.
1873 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1874 * the remaining amount of memory between memmax and the cleartext
1875 * connections. If neither are set, then it is considered that all
1876 * connections are SSL-capable, and maxconn is computed based on this,
1877 * then maxsslconn accordingly. We need to know if SSL is used on the
1878 * frontends, backends, or both, because when it's used on both sides,
1879 * we need twice the value for maxsslconn, but we only count the
1880 * handshake once since it is not performed on the two sides at the
1881 * same time (frontend-side is terminated before backend-side begins).
1882 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001883 * ssl_handshake_cost during its initialization. In any case, if
1884 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1885 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001886 */
Willy Tarreauac350932019-03-01 15:43:14 +01001887 ideal_maxconn = compute_ideal_maxconn();
1888
Willy Tarreaud0256482015-01-15 21:45:22 +01001889 if (!global.rlimit_memmax) {
1890 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01001891 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01001892 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1893 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1894 }
1895 }
1896#ifdef USE_OPENSSL
1897 else if (!global.maxconn && !global.maxsslconn &&
1898 (global.ssl_used_frontend || global.ssl_used_backend)) {
1899 /* memmax is set, compute everything automatically. Here we want
1900 * to ensure that all SSL connections will be served. We take
1901 * care of the number of sides where SSL is used, and consider
1902 * the worst case : SSL used on both sides and doing a handshake
1903 * simultaneously. Note that we can't have more than maxconn
1904 * handshakes at a time by definition, so for the worst case of
1905 * two SSL conns per connection, we count a single handshake.
1906 */
1907 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1908 int64_t mem = global.rlimit_memmax * 1048576ULL;
1909
1910 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1911 mem -= global.maxzlibmem;
1912 mem = mem * MEM_USABLE_RATIO;
1913
1914 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001915 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001916 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1917 global.ssl_handshake_max_cost); // 1 handshake per connection max
1918
Willy Tarreauac350932019-03-01 15:43:14 +01001919 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001920 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001921#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01001922 if (global.maxconn > SYSTEM_MAXCONN)
1923 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001924#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001925 global.maxsslconn = sides * global.maxconn;
1926 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1927 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1928 global.maxconn, global.maxsslconn);
1929 }
1930 else if (!global.maxsslconn &&
1931 (global.ssl_used_frontend || global.ssl_used_backend)) {
1932 /* memmax and maxconn are known, compute maxsslconn automatically.
1933 * maxsslconn being forced, we don't know how many of it will be
1934 * on each side if both sides are being used. The worst case is
1935 * when all connections use only one SSL instance because
1936 * handshakes may be on two sides at the same time.
1937 */
1938 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1939 int64_t mem = global.rlimit_memmax * 1048576ULL;
1940 int64_t sslmem;
1941
1942 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1943 mem -= global.maxzlibmem;
1944 mem = mem * MEM_USABLE_RATIO;
1945
Willy Tarreau87b09662015-04-03 00:22:06 +02001946 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001947 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1948 global.maxsslconn = round_2dig(global.maxsslconn);
1949
1950 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001951 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1952 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1953 "without SSL is %d, but %d was found and SSL is in use.\n",
1954 global.rlimit_memmax,
1955 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
1956 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001957 exit(1);
1958 }
1959
1960 if (global.maxsslconn > sides * global.maxconn)
1961 global.maxsslconn = sides * global.maxconn;
1962
1963 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1964 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1965 }
1966#endif
1967 else if (!global.maxconn) {
1968 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1969 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1970 int64_t mem = global.rlimit_memmax * 1048576ULL;
1971 int64_t clearmem;
1972
1973 if (global.ssl_used_frontend || global.ssl_used_backend)
1974 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1975
1976 mem -= global.maxzlibmem;
1977 mem = mem * MEM_USABLE_RATIO;
1978
1979 clearmem = mem;
1980 if (sides)
1981 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1982
Willy Tarreau87b09662015-04-03 00:22:06 +02001983 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01001984 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001985 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001986#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01001987 if (global.maxconn > SYSTEM_MAXCONN)
1988 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001989#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001990
1991 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001992 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1993 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1994 "is %d, but %d was found.\n",
1995 global.rlimit_memmax,
1996 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1997 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001998 exit(1);
1999 }
2000
2001 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2002 if (sides && global.maxsslconn > sides * global.maxconn) {
2003 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2004 "to be limited to %d. Better reduce global.maxsslconn to get more "
2005 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2006 }
2007 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2008 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002009 }
2010
Willy Tarreau5a023f02019-03-01 14:19:31 +01002011 if (!global.maxpipes)
2012 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002013
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002014 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002015 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002016 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002017 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2018 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2019
Emeric Brunece0c332017-12-06 13:51:49 +01002020 /* compute fd used by async engines */
2021 if (global.ssl_used_async_engines) {
2022 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2023 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2024 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002025
Olivier Houchard88698d92019-04-16 19:07:22 +02002026 /* update connection pool thresholds */
2027 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2028 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2029
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002030 proxy_adjust_all_maxconn();
2031
Willy Tarreau1db37712007-06-03 17:16:49 +02002032 if (global.tune.maxpollevents <= 0)
2033 global.tune.maxpollevents = MAX_POLL_EVENTS;
2034
Olivier Houchard1599b802018-05-24 18:59:04 +02002035 if (global.tune.runqueue_depth <= 0)
2036 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2037
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002038 if (global.tune.recv_enough == 0)
2039 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2040
Willy Tarreau27097842015-09-28 13:53:23 +02002041 if (global.tune.maxrewrite < 0)
2042 global.tune.maxrewrite = MAXREWRITE;
2043
Willy Tarreau27a674e2009-08-17 07:23:33 +02002044 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2045 global.tune.maxrewrite = global.tune.bufsize / 2;
2046
Willy Tarreaubaaee002006-06-26 02:48:02 +02002047 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2048 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002049 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002050 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2051 }
2052
William Lallemand095ba4c2017-06-01 17:38:50 +02002053 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002054 /* command line daemon mode inhibits foreground and debug modes mode */
2055 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002056 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002057 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002058
2059 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002060
William Lallemand095ba4c2017-06-01 17:38:50 +02002061 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002062 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002063 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002064 }
2065
William Lallemand095ba4c2017-06-01 17:38:50 +02002066 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002067 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002068 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 +02002069 global.nbproc = 1;
2070 }
2071
2072 if (global.nbproc < 1)
2073 global.nbproc = 1;
2074
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002075 if (global.nbthread < 1)
2076 global.nbthread = 1;
2077
Christopher Faulet3ef26392017-08-29 16:46:57 +02002078 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002079 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002080 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002081 exit(1);
2082 }
2083
Christopher Faulet96d44832017-11-14 22:02:30 +01002084 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002085 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002086 exit(1);
2087 }
2088
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002089 /*
2090 * Note: we could register external pollers here.
2091 * Built-in pollers have been registered before main().
2092 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002093
Willy Tarreau43b78992009-01-25 15:42:27 +01002094 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002095 disable_poller("kqueue");
2096
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002097 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2098 disable_poller("evports");
2099
Willy Tarreau43b78992009-01-25 15:42:27 +01002100 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002101 disable_poller("epoll");
2102
Willy Tarreau43b78992009-01-25 15:42:27 +01002103 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002104 disable_poller("poll");
2105
Willy Tarreau43b78992009-01-25 15:42:27 +01002106 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002107 disable_poller("select");
2108
2109 /* Note: we could disable any poller by name here */
2110
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002111 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002112 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002113 fprintf(stderr, "\n");
2114 list_filters(stderr);
2115 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002116
Willy Tarreau4f60f162007-04-08 16:39:58 +02002117 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002118 ha_alert("No polling mechanism available.\n"
2119 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2120 " is too low on this platform to support maxconn and the number of listeners\n"
2121 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2122 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2123 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2124 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2125 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2126 " check build settings using 'haproxy -vv'.\n\n",
2127 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002128 exit(1);
2129 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002130 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2131 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002132 }
2133
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002134 if (!global.node)
2135 global.node = strdup(hostname);
2136
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002137 if (!hlua_post_init())
2138 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002139
Maxime de Roucy0f503922016-05-13 23:52:55 +02002140 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002141}
2142
Simon Horman6fb82592011-07-15 13:14:11 +09002143static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002144{
Simon Hormanac821422011-07-15 13:14:09 +09002145 struct acl_term_suite *suite, *suiteb;
2146 struct acl_term *term, *termb;
2147
Simon Horman6fb82592011-07-15 13:14:11 +09002148 if (!cond)
2149 return;
2150
2151 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2152 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2153 LIST_DEL(&term->list);
2154 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002155 }
Simon Horman6fb82592011-07-15 13:14:11 +09002156 LIST_DEL(&suite->list);
2157 free(suite);
2158 }
2159
2160 free(cond);
2161}
2162
Christopher Faulet482c8ec2019-12-17 11:25:46 +01002163static void deinit_act_rules(struct list *rules)
Simon Horman6fb82592011-07-15 13:14:11 +09002164{
Christopher Faulet482c8ec2019-12-17 11:25:46 +01002165 struct act_rule *rule, *ruleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002166
Christopher Faulet482c8ec2019-12-17 11:25:46 +01002167 list_for_each_entry_safe(rule, ruleb, rules, list) {
2168 LIST_DEL(&rule->list);
2169 deinit_acl_cond(rule->cond);
2170 free(rule);
Simon Hormanac821422011-07-15 13:14:09 +09002171 }
2172}
2173
Simon Horman6fb82592011-07-15 13:14:11 +09002174static void deinit_stick_rules(struct list *rules)
2175{
2176 struct sticking_rule *rule, *ruleb;
2177
2178 list_for_each_entry_safe(rule, ruleb, rules, list) {
2179 LIST_DEL(&rule->list);
2180 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002181 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002182 free(rule);
2183 }
2184}
2185
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002186void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002187{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002188 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002189 struct cap_hdr *h,*h_next;
2190 struct server *s,*s_next;
2191 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002192 struct acl_cond *cond, *condb;
2193 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002194 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002195 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002196 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002197 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002198 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01002199 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002200 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002201 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002202 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002203 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002204 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002205 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002206 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002207
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002208 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002209 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002210 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002211 free(p->id);
2212 free(p->check_req);
2213 free(p->cookie_name);
2214 free(p->cookie_domain);
Christopher Fauletdb2cdbb2020-01-21 11:06:48 +01002215 free(p->cookie_attrs);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002216 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002217 free(p->capture_name);
2218 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002219 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002220 if (p->conf.logformat_string != default_http_log_format &&
2221 p->conf.logformat_string != default_tcp_log_format &&
2222 p->conf.logformat_string != clf_http_log_format)
2223 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002224
Willy Tarreau62a61232013-04-12 18:13:46 +02002225 free(p->conf.lfs_file);
2226 free(p->conf.uniqueid_format_string);
2227 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002228 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2229 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002230
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002231 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2232 free(p->conf.logformat_sd_string);
2233 free(p->conf.lfsd_file);
2234
Willy Tarreaua534fea2008-08-03 12:19:50 +02002235 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002236 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002237
Willy Tarreauf4f04122010-01-28 18:10:50 +01002238 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
2239 LIST_DEL(&cwl->list);
2240 free(cwl->s);
2241 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002242 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002243
Willy Tarreauf4f04122010-01-28 18:10:50 +01002244 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
2245 LIST_DEL(&cwl->list);
2246 free(cwl->s);
2247 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002248 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002249
Willy Tarreaub80c2302007-11-30 20:51:32 +01002250 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2251 LIST_DEL(&cond->list);
2252 prune_acl_cond(cond);
2253 free(cond);
2254 }
2255
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002256 for (exp = p->req_exp; exp != NULL; ) {
Dragan Dosen26743032019-04-30 15:54:36 +02002257 regex_free(exp->preg);
Willy Tarreau98d04852015-05-26 12:18:29 +02002258 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002259 expb = exp;
2260 exp = exp->next;
2261 free(expb);
2262 }
2263
2264 for (exp = p->rsp_exp; exp != NULL; ) {
Dragan Dosen26743032019-04-30 15:54:36 +02002265 regex_free(exp->preg);
Willy Tarreau98d04852015-05-26 12:18:29 +02002266 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002267 expb = exp;
2268 exp = exp->next;
2269 free(expb);
2270 }
2271
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002272 /* build a list of unique uri_auths */
2273 if (!ua)
2274 ua = p->uri_auth;
2275 else {
2276 /* check if p->uri_auth is unique */
2277 for (uap = ua; uap; uap=uap->next)
2278 if (uap == p->uri_auth)
2279 break;
2280
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002281 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002282 /* add it, if it is */
2283 p->uri_auth->next = ua;
2284 ua = p->uri_auth;
2285 }
2286 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002287
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002288 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2289 LIST_DEL(&acl->list);
2290 prune_acl(acl);
2291 free(acl);
2292 }
2293
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002294 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2295 LIST_DEL(&srule->list);
2296 prune_acl_cond(srule->cond);
2297 free(srule->cond);
2298 free(srule);
2299 }
2300
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002301 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2302 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002303 if (rule->cond) {
2304 prune_acl_cond(rule->cond);
2305 free(rule->cond);
2306 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002307 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002308 free(rule);
2309 }
2310
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002311 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2312 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002313 if (rdr->cond) {
2314 prune_acl_cond(rdr->cond);
2315 free(rdr->cond);
2316 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002317 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002318 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2319 LIST_DEL(&lf->list);
2320 free(lf);
2321 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002322 free(rdr);
2323 }
2324
William Lallemand0f99e342011-10-12 17:50:54 +02002325 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2326 LIST_DEL(&log->list);
2327 free(log);
2328 }
2329
William Lallemand723b73a2012-02-08 16:37:49 +01002330 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2331 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002332 release_sample_expr(lf->expr);
2333 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002334 free(lf);
2335 }
2336
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002337 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2338 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002339 release_sample_expr(lf->expr);
2340 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002341 free(lf);
2342 }
2343
Christopher Faulet482c8ec2019-12-17 11:25:46 +01002344 deinit_act_rules(&p->tcp_req.inspect_rules);
2345 deinit_act_rules(&p->tcp_rep.inspect_rules);
2346 deinit_act_rules(&p->tcp_req.l4_rules);
2347 deinit_act_rules(&p->tcp_req.l5_rules);
2348 deinit_act_rules(&p->http_req_rules);
2349 deinit_act_rules(&p->http_res_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002350
Simon Horman6fb82592011-07-15 13:14:11 +09002351 deinit_stick_rules(&p->storersp_rules);
2352 deinit_stick_rules(&p->sticking_rules);
2353
Willy Tarreaubaaee002006-06-26 02:48:02 +02002354 h = p->req_cap;
2355 while (h) {
2356 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002357 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002358 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002359 free(h);
2360 h = h_next;
2361 }/* end while(h) */
2362
2363 h = p->rsp_cap;
2364 while (h) {
2365 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002366 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002367 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002368 free(h);
2369 h = h_next;
2370 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002371
Willy Tarreaubaaee002006-06-26 02:48:02 +02002372 s = p->srv;
2373 while (s) {
2374 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002375
Willy Tarreauf6562792019-05-07 19:05:35 +02002376 task_destroy(s->check.task);
2377 task_destroy(s->agent.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002378
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002379 if (s->check.wait_list.tasklet)
2380 tasklet_free(s->check.wait_list.tasklet);
2381 if (s->agent.wait_list.tasklet)
2382 tasklet_free(s->agent.wait_list.tasklet);
Dragan Dosen026ef572019-04-30 00:56:20 +02002383
Willy Tarreauf6562792019-05-07 19:05:35 +02002384 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002385
Willy Tarreaua534fea2008-08-03 12:19:50 +02002386 free(s->id);
2387 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002388 free(s->check.bi.area);
2389 free(s->check.bo.area);
2390 free(s->agent.bi.area);
2391 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002392 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002393 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002394 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002395 free(s->idle_conns);
2396 free(s->priv_conns);
2397 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002398 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002399 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002400
2401 if (s->use_ssl || s->check.use_ssl) {
2402 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2403 xprt_get(XPRT_SSL)->destroy_srv(s);
2404 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002405 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002406 free(s);
2407 s = s_next;
2408 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002409
Willy Tarreau4348fad2012-09-20 16:48:07 +02002410 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002411 /*
2412 * Zombie proxy, the listener just pretend to be up
2413 * because they still hold an opened fd.
2414 * Close it and give the listener its real state.
2415 */
2416 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2417 close(l->fd);
2418 l->state = LI_INIT;
2419 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002420 unbind_listener(l);
2421 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002422 LIST_DEL(&l->by_fe);
2423 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002424 free(l->name);
2425 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002426 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002427 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002428
Willy Tarreau4348fad2012-09-20 16:48:07 +02002429 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002430 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002431 if (bind_conf->xprt->destroy_bind_conf)
2432 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002433 free(bind_conf->file);
2434 free(bind_conf->arg);
2435 LIST_DEL(&bind_conf->by_fe);
2436 free(bind_conf);
2437 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002438
Christopher Fauletd7c91962015-04-30 11:48:27 +02002439 flt_deinit(p);
2440
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002441 free(p->desc);
2442 free(p->fwdfor_hdr_name);
2443
Olivier Houchard3f795f72019-04-17 22:51:06 +02002444 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002445
Willy Tarreaubafbe012017-11-24 17:34:44 +01002446 pool_destroy(p->req_cap_pool);
2447 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002448 if (p->table)
2449 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002450
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002451 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002452 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002453 HA_SPIN_DESTROY(&p0->lbprm.lock);
2454 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002455 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002456 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002457
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002458 while (ua) {
2459 uap = ua;
2460 ua = ua->next;
2461
Willy Tarreaua534fea2008-08-03 12:19:50 +02002462 free(uap->uri_prefix);
2463 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002464 free(uap->node);
2465 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002466
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002467 userlist_free(uap->userlist);
Christopher Faulet482c8ec2019-12-17 11:25:46 +01002468 deinit_act_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002469
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002470 free(uap);
2471 }
2472
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002473 userlist_free(userlist);
2474
David Carlier834cb2e2015-09-25 12:02:25 +01002475 cfg_unregister_sections();
2476
Christopher Faulet0132d062017-07-26 15:33:35 +02002477 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002478
Willy Tarreaudd815982007-10-16 12:25:14 +02002479 protocol_unbind_all();
2480
Willy Tarreau05554e62016-12-21 20:46:26 +01002481 list_for_each_entry(pdf, &post_deinit_list, list)
2482 pdf->fct();
2483
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002484 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002485 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002486 free(global.chroot); global.chroot = NULL;
2487 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002488 free(global.node); global.node = NULL;
2489 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002490 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002491 task_destroy(global_listener_queue_task); global_listener_queue_task = NULL;
2492 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002493 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002494
William Lallemand0f99e342011-10-12 17:50:54 +02002495 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2496 LIST_DEL(&log->list);
2497 free(log);
2498 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002499 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002500 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002501 LIST_DEL(&wl->list);
2502 free(wl);
2503 }
2504
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002505 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2506 if (bol->must_free)
2507 free((void *)bol->str);
2508 LIST_DEL(&bol->list);
2509 free(bol);
2510 }
2511
Christopher Fauletff2613e2016-11-09 11:36:17 +01002512 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002513 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002514 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002515} /* end deinit() */
2516
William Lallemand72160322018-11-06 17:37:16 +01002517
Willy Tarreau918ff602011-07-25 16:33:49 +02002518/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002519static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002520{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002521 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002522
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002523 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002524 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002525 /* Process a few tasks */
2526 process_runnable_tasks();
2527
William Lallemand1aab50b2018-06-07 09:46:01 +02002528 /* check if we caught some signals and process them in the
2529 first thread */
2530 if (tid == 0)
2531 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002532
Willy Tarreau58b458d2008-06-29 22:40:23 +02002533 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002534 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002535
Willy Tarreau85c459d2018-08-02 10:54:31 +02002536 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002537 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002538 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002539
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002540 /* also stop if we failed to cleanly stop all tasks */
2541 if (killed > 1)
2542 break;
2543
Willy Tarreau10146c92015-04-13 20:44:19 +02002544 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002545 wake = 1;
Christopher Faulet32467fe2018-01-15 12:16:34 +01002546 if (fd_cache_mask & tid_bit)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002547 activity[tid].wake_cache++;
Olivier Houchardcfbb3e62019-05-29 19:22:43 +02002548 else if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002549 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002550 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002551 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002552 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002553 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2554 __ha_barrier_atomic_store();
Olivier Houchardcfbb3e62019-05-29 19:22:43 +02002555 if (global_tasks_mask & tid_bit) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002556 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002557 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002558 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002559 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002560 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002561
Willy Tarreau58b458d2008-06-29 22:40:23 +02002562 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002563 cur_poller.poll(&cur_poller, next, wake);
Olivier Houchard79321b92018-07-26 17:55:11 +02002564 if (sleeping_thread_mask & tid_bit)
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002565 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002566 fd_process_cached_events();
Emeric Brun64cc49c2017-10-03 14:46:45 +02002567
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002568 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002569 }
2570}
2571
Christopher Faulet1d17c102017-08-29 15:38:48 +02002572static void *run_thread_poll_loop(void *data)
2573{
Willy Tarreau082b6282019-05-22 14:42:12 +02002574 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002575 struct per_thread_init_fct *ptif;
2576 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002577 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002578 static int init_left = 0;
2579 __decl_hathreads(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2580 __decl_hathreads(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002581
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002582 ha_set_tid((unsigned long)data);
Willy Tarreau91e6df02019-05-03 17:21:18 +02002583
Willy Tarreauf6178242019-05-21 19:46:58 +02002584#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002585#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002586 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002587#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002588 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002589#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002590#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002591 /* Now, initialize one thread init at a time. This is better since
2592 * some init code is a bit tricky and may release global resources
2593 * after reallocating them locally. This will also ensure there is
2594 * no race on file descriptors allocation.
2595 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002596#ifdef USE_THREAD
2597 pthread_mutex_lock(&init_mutex);
2598#endif
2599 /* The first thread must set the number of threads left */
2600 if (!init_left)
2601 init_left = global.nbthread;
2602 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002603
Christopher Faulet1d17c102017-08-29 15:38:48 +02002604 tv_update_date(-1,-1);
2605
Willy Tarreau082b6282019-05-22 14:42:12 +02002606 /* per-thread alloc calls performed here are not allowed to snoop on
2607 * other threads, so they are free to initialize at their own rhythm
2608 * as long as they act as if they were alone. None of them may rely
2609 * on resources initialized by the other ones.
2610 */
2611 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2612 if (!ptaf->fct()) {
2613 ha_alert("failed to allocate resources for thread %u.\n", tid);
2614 exit(1);
2615 }
2616 }
2617
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002618 /* per-thread init calls performed here are not allowed to snoop on
2619 * other threads, so they are free to initialize at their own rhythm
2620 * as long as they act as if they were alone.
2621 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002622 list_for_each_entry(ptif, &per_thread_init_list, list) {
2623 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002624 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002625 exit(1);
2626 }
2627 }
2628
Willy Tarreau71092822019-06-10 09:51:04 +02002629 /* enabling protocols will result in fd_insert() calls to be performed,
2630 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002631 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002632 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002633 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002634 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002635
Willy Tarreau34a150c2019-06-11 09:16:41 +02002636#ifdef USE_THREAD
2637 pthread_cond_broadcast(&init_cond);
2638 pthread_mutex_unlock(&init_mutex);
2639
2640 /* now wait for other threads to finish starting */
2641 pthread_mutex_lock(&init_mutex);
2642 while (init_left)
2643 pthread_cond_wait(&init_cond, &init_mutex);
2644 pthread_mutex_unlock(&init_mutex);
2645#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002646
Christopher Faulet1d17c102017-08-29 15:38:48 +02002647 run_poll_loop();
2648
2649 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2650 ptdf->fct();
2651
Willy Tarreau082b6282019-05-22 14:42:12 +02002652 list_for_each_entry(ptff, &per_thread_free_list, list)
2653 ptff->fct();
2654
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002655#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002656 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002657 if (tid > 0)
2658 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002659#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002660 return NULL;
2661}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002662
Willy Tarreaue9b26022011-08-01 20:57:55 +02002663/* This is the global management task for listeners. It enables listeners waiting
2664 * for global resources when there are enough free resource, or at least once in
2665 * a while. It is designed to be called as a task.
2666 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002667static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002668{
2669 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002670 /* queue is empty, nothing to do */
2671 if (LIST_ISEMPTY(&global_listener_queue))
2672 goto out;
2673
2674 /* If there are still too many concurrent connections, let's wait for
2675 * some of them to go away. We don't need to re-arm the timer because
2676 * each of them will scan the queue anyway.
2677 */
2678 if (unlikely(actconn >= global.maxconn))
2679 goto out;
2680
2681 /* We should periodically try to enable listeners waiting for a global
2682 * resource here, because it is possible, though very unlikely, that
2683 * they have been blocked by a temporary lack of global resource such
2684 * as a file descriptor or memory and that the temporary condition has
2685 * disappeared.
2686 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002687 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002688
2689 out:
2690 t->expire = next;
2691 task_queue(t);
2692 return t;
2693}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002694
Willy Tarreaubaaee002006-06-26 02:48:02 +02002695int main(int argc, char **argv)
2696{
2697 int err, retry;
2698 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002699 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002700 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002701
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002702 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002703
Willy Tarreauff9c9142019-02-07 10:39:36 +01002704 /* this can only safely be done here, though it's optimized away by
2705 * the compiler.
2706 */
2707 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2708 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2709 "HAProxy was built with value %d, please fix it and rebuild.\n",
2710 LONGBITS, MAX_PROCS);
2711 exit(1);
2712 }
2713
Willy Tarreaubf696402019-03-01 10:09:28 +01002714 /* take a copy of initial limits before we possibly change them */
2715 getrlimit(RLIMIT_NOFILE, &limit);
2716 rlim_fd_cur_at_boot = limit.rlim_cur;
2717 rlim_fd_max_at_boot = limit.rlim_max;
2718
Willy Tarreau5794fb02018-11-25 18:43:29 +01002719 /* process all initcalls in order of potential dependency */
2720 RUN_INITCALLS(STG_PREPARE);
2721 RUN_INITCALLS(STG_LOCK);
2722 RUN_INITCALLS(STG_ALLOC);
2723 RUN_INITCALLS(STG_POOL);
2724 RUN_INITCALLS(STG_REGISTER);
2725 RUN_INITCALLS(STG_INIT);
2726
Emeric Bruncf20bf12010-10-22 16:06:11 +02002727 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002728 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2729 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2730 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002731 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002732
Willy Tarreaue437c442010-03-17 18:02:46 +01002733 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2734 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2735 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002736 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002737 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002738
Willy Tarreaudc23a922011-02-16 11:10:36 +01002739 /* ulimits */
2740 if (!global.rlimit_nofile)
2741 global.rlimit_nofile = global.maxsock;
2742
2743 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002744 limit.rlim_cur = global.rlimit_nofile;
2745 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2746
Willy Tarreaudc23a922011-02-16 11:10:36 +01002747 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002748 /* try to set it to the max possible at least */
2749 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002750 limit.rlim_cur = limit.rlim_max;
2751 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2752 getrlimit(RLIMIT_NOFILE, &limit);
2753
Christopher Faulet767a84b2017-11-24 16:50:31 +01002754 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 +02002755 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002756 }
2757 }
2758
2759 if (global.rlimit_memmax) {
2760 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002761 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002762#ifdef RLIMIT_AS
2763 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002764 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2765 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002766 }
2767#else
2768 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002769 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2770 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002771 }
2772#endif
2773 }
2774
Olivier Houchardf73629d2017-04-05 22:33:04 +02002775 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002776 if (strcmp("/dev/null", old_unixsocket) != 0) {
2777 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002778 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002779 if (!(global.mode & MODE_MWORKER))
2780 exit(1);
2781 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002782 }
2783 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002784 get_cur_unixsocket();
2785
Willy Tarreaubaaee002006-06-26 02:48:02 +02002786 /* We will loop at most 100 times with 10 ms delay each time.
2787 * That's at most 1 second. We only send a signal to old pids
2788 * if we cannot grab at least one port.
2789 */
2790 retry = MAX_START_RETRIES;
2791 err = ERR_NONE;
2792 while (retry >= 0) {
2793 struct timeval w;
2794 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002795 /* exit the loop on no error or fatal error */
2796 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002797 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002798 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002799 break;
2800
2801 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2802 * listening sockets. So on those platforms, it would be wiser to
2803 * simply send SIGUSR1, which will not be undoable.
2804 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002805 if (tell_old_pids(SIGTTOU) == 0) {
2806 /* no need to wait if we can't contact old pids */
2807 retry = 0;
2808 continue;
2809 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002810 /* give some time to old processes to stop listening */
2811 w.tv_sec = 0;
2812 w.tv_usec = 10*1000;
2813 select(0, NULL, NULL, NULL, &w);
2814 retry--;
2815 }
2816
2817 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002818 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002819 if (retry != MAX_START_RETRIES && nb_oldpids) {
2820 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002821 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002822 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002823 exit(1);
2824 }
2825
William Lallemand944e6192018-11-21 15:48:31 +01002826 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002827 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002828 /* Note: we don't have to send anything to the old pids because we
2829 * never stopped them. */
2830 exit(1);
2831 }
2832
Emeric Bruncf20bf12010-10-22 16:06:11 +02002833 err = protocol_bind_all(errmsg, sizeof(errmsg));
2834 if ((err & ~ERR_WARN) != ERR_NONE) {
2835 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002836 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002837
Christopher Faulet767a84b2017-11-24 16:50:31 +01002838 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002839 protocol_unbind_all(); /* cleanup everything we can */
2840 if (nb_oldpids)
2841 tell_old_pids(SIGTTIN);
2842 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002843 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002844 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002845 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002846 /* Ok, all listener should now be bound, close any leftover sockets
2847 * the previous process gave us, we don't need them anymore
2848 */
2849 while (xfer_sock_list != NULL) {
2850 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2851 close(xfer_sock_list->fd);
2852 free(xfer_sock_list->iface);
2853 free(xfer_sock_list->namespace);
2854 free(xfer_sock_list);
2855 xfer_sock_list = tmpxfer;
2856 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002857
Willy Tarreaubaaee002006-06-26 02:48:02 +02002858 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002859 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2860 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002861
Willy Tarreaubaaee002006-06-26 02:48:02 +02002862 /* MODE_QUIET can inhibit alerts and warnings below this line */
2863
PiBa-NL149a81a2017-12-25 21:03:31 +01002864 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2865 /* either stdin/out/err are already closed or should stay as they are. */
2866 if ((global.mode & MODE_DAEMON)) {
2867 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2868 global.mode &= ~MODE_VERBOSE;
2869 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2870 }
2871 } else {
2872 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2873 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002874 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002875 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002876 }
2877
2878 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002879 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002880 unlink(global.pidfile);
2881 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2882 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002883 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002884 if (nb_oldpids)
2885 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002886 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002887 exit(1);
2888 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002889 }
2890
Willy Tarreaub38651a2007-03-24 17:24:39 +01002891 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002892 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2893 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002894 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002895 exit(1);
2896 }
2897
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002898 /* If the user is not root, we'll still let him try the configuration
2899 * but we inform him that unexpected behaviour may occur.
2900 */
2901 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002902 ha_warning("[%s.main()] Some options which require full privileges"
2903 " might not work well.\n"
2904 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002905
William Lallemand095ba4c2017-06-01 17:38:50 +02002906 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2907
2908 /* chroot if needed */
2909 if (global.chroot != NULL) {
2910 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002911 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002912 if (nb_oldpids)
2913 tell_old_pids(SIGTTIN);
2914 protocol_unbind_all();
2915 exit(1);
2916 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002917 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002918 }
2919
William Lallemand944e6192018-11-21 15:48:31 +01002920 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02002921 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002922
William Lallemand27edc4b2019-05-07 17:49:33 +02002923 /* send a SIGTERM to workers who have a too high reloads number */
2924 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
2925 mworker_kill_max_reloads(SIGTERM);
2926
William Lallemand8a361b52017-06-20 11:20:33 +02002927 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2928 nb_oldpids = 0;
2929 free(oldpids);
2930 oldpids = NULL;
2931 }
2932
2933
Willy Tarreaubaaee002006-06-26 02:48:02 +02002934 /* Note that any error at this stage will be fatal because we will not
2935 * be able to restart the old pids.
2936 */
2937
William Lallemand095ba4c2017-06-01 17:38:50 +02002938 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2939 /* setgid / setuid */
2940 if (global.gid) {
2941 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01002942 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2943 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002944
2945 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002946 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002947 protocol_unbind_all();
2948 exit(1);
2949 }
2950 }
Michael Schererab012dd2013-01-12 18:35:19 +01002951
William Lallemand095ba4c2017-06-01 17:38:50 +02002952 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002953 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002954 protocol_unbind_all();
2955 exit(1);
2956 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002957 }
Willy Tarreau636848a2019-04-15 19:38:50 +02002958
Willy Tarreaubaaee002006-06-26 02:48:02 +02002959 /* check ulimits */
2960 limit.rlim_cur = limit.rlim_max = 0;
2961 getrlimit(RLIMIT_NOFILE, &limit);
2962 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002963 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",
2964 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002965 }
2966
William Lallemand944e6192018-11-21 15:48:31 +01002967 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002968 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002969 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002970 int ret = 0;
2971 int proc;
William Lallemande1340412017-12-28 16:09:36 +01002972 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002973
William Lallemand095ba4c2017-06-01 17:38:50 +02002974 /*
2975 * if daemon + mworker: must fork here to let a master
2976 * process live in background before forking children
2977 */
William Lallemand73b85e72017-06-01 17:38:51 +02002978
2979 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2980 && (global.mode & MODE_MWORKER)
2981 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002982 ret = fork();
2983 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002984 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002985 protocol_unbind_all();
2986 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02002987 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02002988 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02002989 } else /* change the process group ID in the child (master process) */
2990 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02002991 }
William Lallemande20b6a62017-06-01 17:38:55 +02002992
William Lallemande20b6a62017-06-01 17:38:55 +02002993
William Lallemanddeed7802017-11-06 11:00:04 +01002994 /* if in master-worker mode, write the PID of the father */
2995 if (global.mode & MODE_MWORKER) {
2996 char pidstr[100];
Willy Tarreaueb7f0722019-06-22 07:41:38 +02002997 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01002998 if (pidfd >= 0)
2999 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003000 }
3001
Willy Tarreaubaaee002006-06-26 02:48:02 +02003002 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003003 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003004 if (global.mode & MODE_MWORKER)
3005 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003006 for (proc = 0; proc < global.nbproc; proc++) {
3007 ret = fork();
3008 if (ret < 0) {
3009 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3010 protocol_unbind_all();
3011 exit(1); /* there has been an error */
3012 }
3013 else if (ret == 0) /* child breaks here */
3014 break;
William Lallemand944e6192018-11-21 15:48:31 +01003015 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3016 char pidstr[100];
3017 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
3018 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
3019 }
3020 if (global.mode & MODE_MWORKER) {
3021 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003022
William Lallemand220567e2018-11-21 18:04:53 +01003023 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003024 /* find the right mworker_proc */
3025 list_for_each_entry(child, &proc_list, list) {
3026 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003027 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003028 child->timestamp = now.tv_sec;
3029 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003030 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003031 break;
3032 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003033 }
3034 }
William Lallemandbc193052018-09-11 10:06:26 +02003035
William Lallemand944e6192018-11-21 15:48:31 +01003036 relative_pid++; /* each child will get a different one */
3037 pid_bit <<= 1;
3038 }
3039 } else {
3040 /* wait mode */
3041 global.nbproc = 1;
3042 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003043 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003044
3045#ifdef USE_CPU_AFFINITY
3046 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003047 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003048 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003049#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003050 {
3051 cpuset_t cpuset;
3052 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003053 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003054
3055 CPU_ZERO(&cpuset);
3056 while ((i = ffsl(cpu_map)) > 0) {
3057 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003058 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003059 }
3060 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3061 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003062#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003063 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003064#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003065#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003066 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003067 if (pidfd >= 0) {
3068 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3069 close(pidfd);
3070 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003071
3072 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003073 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003074
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003075 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003076 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003077
3078 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3079 (global.mode & MODE_DAEMON)) {
3080 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003081 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3082 stdio_quiet(-1);
3083
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003084 global.mode &= ~MODE_VERBOSE;
3085 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003086 }
3087
William Lallemandb3f2be32018-09-11 10:06:18 +02003088 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003089 /* should never get there */
3090 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003091 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003092#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003093 ssl_free_dh();
3094#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003095 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003096 }
3097
William Lallemandcb11fd22017-06-01 17:38:52 +02003098 /* child must never use the atexit function */
3099 atexit_flag = 0;
3100
William Lallemandbc193052018-09-11 10:06:26 +02003101 /* close useless master sockets */
3102 if (global.mode & MODE_MWORKER) {
3103 struct mworker_proc *child, *it;
3104 master = 0;
3105
William Lallemand309dc9a2018-10-26 14:47:45 +02003106 mworker_cli_proxy_stop();
3107
William Lallemandbc193052018-09-11 10:06:26 +02003108 /* free proc struct of other processes */
3109 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003110 /* close the FD of the master side for all
3111 * workers, we don't need to close the worker
3112 * side of other workers since it's done with
3113 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003114 if (child->ipc_fd[0] >= 0)
3115 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003116 if (child->relative_pid == relative_pid &&
3117 child->reloads == 0) {
3118 /* keep this struct if this is our pid */
3119 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003120 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003121 }
William Lallemandbc193052018-09-11 10:06:26 +02003122 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003123 mworker_free_child(child);
3124 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003125 }
3126 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003127
William Lallemande1340412017-12-28 16:09:36 +01003128 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3129 devnullfd = open("/dev/null", O_RDWR, 0);
3130 if (devnullfd < 0) {
3131 ha_alert("Cannot open /dev/null\n");
3132 exit(EXIT_FAILURE);
3133 }
3134 }
3135
William Lallemand095ba4c2017-06-01 17:38:50 +02003136 /* Must chroot and setgid/setuid in the children */
3137 /* chroot if needed */
3138 if (global.chroot != NULL) {
3139 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003140 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003141 if (nb_oldpids)
3142 tell_old_pids(SIGTTIN);
3143 protocol_unbind_all();
3144 exit(1);
3145 }
3146 }
3147
3148 free(global.chroot);
3149 global.chroot = NULL;
3150
3151 /* setgid / setuid */
3152 if (global.gid) {
3153 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003154 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3155 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003156
3157 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003158 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003159 protocol_unbind_all();
3160 exit(1);
3161 }
3162 }
3163
3164 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003165 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003166 protocol_unbind_all();
3167 exit(1);
3168 }
3169
William Lallemand7f80eb22017-05-26 18:19:55 +02003170 /* pass through every cli socket, and check if it's bound to
3171 * the current process and if it exposes listeners sockets.
3172 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3173 * */
3174
3175 if (global.stats_fe) {
3176 struct bind_conf *bind_conf;
3177
3178 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3179 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3180 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3181 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3182 break;
3183 }
3184 }
3185 }
3186 }
3187
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003188 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003189 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003190 while (px != NULL) {
3191 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003192 if (!(px->bind_proc & (1UL << proc))) {
3193 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3194 zombify_proxy(px);
3195 else
3196 stop_proxy(px);
3197 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003198 }
3199 px = px->next;
3200 }
3201
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003202 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003203 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003204 if (!curpeers->peers_fe)
3205 continue;
3206
3207 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3208 continue;
3209
3210 stop_proxy(curpeers->peers_fe);
3211 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003212 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003213 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003214 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003215 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003216 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003217 curpeers->peers_fe = NULL;
3218 }
3219
William Lallemand2e8fad92018-11-13 16:18:23 +01003220 /*
3221 * This is only done in daemon mode because we might want the
3222 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3223 * we should now close the 3 first FDs to ensure that we can
3224 * detach from the TTY. We MUST NOT do it in other cases since
3225 * it would have already be done, and 0-2 would have been
3226 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003227 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003228 if ((global.mode & MODE_DAEMON) &&
3229 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003230 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003231 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003232 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003233 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3234 }
3235 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003236 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3237 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003238 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003239 }
3240
William Dauchycaf02112019-11-19 10:11:36 +01003241 /* try our best to re-enable core dumps depending on system capabilities.
3242 * What is addressed here :
3243 * - remove file size limits
3244 * - remove core size limits
3245 * - mark the process dumpable again if it lost it due to user/group
3246 */
3247 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3248 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3249
3250#if defined(RLIMIT_FSIZE)
3251 if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
3252 ha_warning("[%s.main()] Failed to set the raise the maximum file size.\n", argv[0]);
3253#endif
3254
3255#if defined(RLIMIT_CORE)
3256 if (setrlimit(RLIMIT_CORE, &limit) == -1)
3257 ha_warning("[%s.main()] Failed to set the raise the core dump size.\n", argv[0]);
3258#endif
3259
3260#if defined(USE_PRCTL)
3261 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3262 ha_warning("[%s.main()] Failed to set the dumpable flag, no core will be dumped.\n", argv[0]);
3263#endif
3264 }
3265
Christopher Faulete3a5e352017-10-24 13:53:54 +02003266 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003267 /*
3268 * That's it : the central polling loop. Run until we stop.
3269 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003270#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003271 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003272 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003273 int i;
3274
William Lallemand1aab50b2018-06-07 09:46:01 +02003275 /* ensure the signals will be blocked in every thread */
3276 sigfillset(&blocked_sig);
3277 sigdelset(&blocked_sig, SIGPROF);
3278 sigdelset(&blocked_sig, SIGBUS);
3279 sigdelset(&blocked_sig, SIGFPE);
3280 sigdelset(&blocked_sig, SIGILL);
3281 sigdelset(&blocked_sig, SIGSEGV);
3282 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3283
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003284 /* Create nbthread-1 thread. The first thread is the current process */
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003285 thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003286 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003287 pthread_create(&thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003288
Christopher Faulet62519022017-10-16 15:49:32 +02003289#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003290 /* Now the CPU affinity for all threads */
Willy Tarreau47b00ae2019-07-16 15:10:34 +02003291 if (global.cpu_map.proc_t1[relative_pid-1])
3292 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3293
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003294 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003295 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003296 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003297
Willy Tarreau421f02e2018-01-20 18:19:22 +01003298 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003299 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
Olivier Houchard829aa242017-12-01 18:19:43 +01003300#if defined(__FreeBSD__) || defined(__NetBSD__)
3301 cpuset_t cpuset;
3302#else
3303 cpu_set_t cpuset;
3304#endif
3305 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003306 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003307
3308 CPU_ZERO(&cpuset);
3309
3310 while ((j = ffsl(cpu_map)) > 0) {
3311 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003312 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003313 }
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003314 pthread_setaffinity_np(thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003315 sizeof(cpuset), &cpuset);
3316 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003317 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003318#endif /* !USE_CPU_AFFINITY */
3319
William Lallemand1aab50b2018-06-07 09:46:01 +02003320 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003321 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003322
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003323 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003324 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003325
3326 /* Wait the end of other threads */
3327 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003328 pthread_join(thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003329
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003330#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3331 show_lock_stats();
3332#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003333 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003334#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003335 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003336 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003337#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003338
3339 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003340 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003341
Willy Tarreaubaaee002006-06-26 02:48:02 +02003342 exit(0);
3343}
3344
3345
3346/*
3347 * Local variables:
3348 * c-indent-level: 8
3349 * c-basic-offset: 8
3350 * End:
3351 */