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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau6c1b6672019-02-26 16:43:49 +01003 * Copyright 2000-2019 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010062#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
Willy Tarreau636848a2019-04-15 19:38:50 +020064#if defined(USE_PRCTL)
65#include <sys/prctl.h>
66#endif
67
Willy Tarreaubaaee002006-06-26 02:48:02 +020068#ifdef DEBUG_FULL
69#include <assert.h>
70#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010071#if defined(USE_SYSTEMD)
72#include <systemd/sd-daemon.h>
73#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020074
Willy Tarreau2dd0d472006-06-29 17:53:05 +020075#include <common/base64.h>
76#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020077#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020078#include <common/compat.h>
79#include <common/config.h>
80#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010081#include <common/errors.h>
Willy Tarreau5794fb02018-11-25 18:43:29 +010082#include <common/initcall.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020083#include <common/memory.h>
84#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010085#include <common/namespace.h>
Willy Tarreauc125cef2019-05-10 09:58:43 +020086#include <common/openssl-compat.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020087#include <common/regex.h>
88#include <common/standard.h>
89#include <common/time.h>
90#include <common/uri_auth.h>
91#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020092#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020093
94#include <types/capture.h>
William Lallemandce83b4a2018-10-26 14:47:30 +020095#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020096#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020097#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090098#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020099#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200101#include <proto/acl.h>
Willy Tarreau609aad92018-11-22 08:31:09 +0100102#include <proto/activity.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +0200103#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +0200104#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200105#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200106#include <proto/channel.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200107#include <proto/cli.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200108#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200109#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200110#include <proto/filters.h>
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 Lallemand16866672019-06-24 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)
Rob Allen56996da2019-05-03 09:11:32 +0100646 if (global.ssl_used_frontend || global.ssl_used_backend)
647 /* close random device FDs */
648 RAND_keep_random_devices_open(0);
649#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100650
Willy Tarreau8dca1952019-03-01 10:21:55 +0100651 /* restore the initial FD limits */
652 limit.rlim_cur = rlim_fd_cur_at_boot;
653 limit.rlim_max = rlim_fd_max_at_boot;
654 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
655 getrlimit(RLIMIT_NOFILE, &limit);
656 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
657 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
658 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
659 }
660
William Lallemand73b85e72017-06-01 17:38:51 +0200661 /* compute length */
662 while (next_argv[next_argc])
663 next_argc++;
664
William Lallemand85b0bd92017-06-01 17:38:53 +0200665 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand3f128872019-04-01 11:29:59 +0200666 next_argv = realloc(next_argv, (next_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200667 if (next_argv == NULL)
668 goto alloc_error;
669
William Lallemand73b85e72017-06-01 17:38:51 +0200670 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200671 if (mworker_child_nb() > 0) {
672 struct mworker_proc *child;
673
William Lallemand73b85e72017-06-01 17:38:51 +0200674 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200675
676 list_for_each_entry(child, &proc_list, list) {
William Lallemand8f7069a2019-04-12 16:09:23 +0200677 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)))
William Lallemand3f128872019-04-01 11:29:59 +0200678 continue;
679 next_argv[next_argc] = memprintf(&msg, "%d", child->pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200680 if (next_argv[next_argc] == NULL)
681 goto alloc_error;
682 msg = NULL;
William Lallemand3f128872019-04-01 11:29:59 +0200683 next_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200684 }
685 }
William Lallemand3f128872019-04-01 11:29:59 +0200686
William Lallemand73b85e72017-06-01 17:38:51 +0200687 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200688
William Lallemand2bf6d622017-06-20 11:20:23 +0200689 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200690 if (cur_unixsocket) {
691
William Lallemand2bf6d622017-06-20 11:20:23 +0200692 next_argv[next_argc++] = "-x";
693 next_argv[next_argc++] = (char *)cur_unixsocket;
694 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200695 }
696
Christopher Faulet767a84b2017-11-24 16:50:31 +0100697 ha_warning("Reexecuting Master process\n");
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
William Lallemand0564d412018-11-20 17:36:53 +0100720 signal_unregister(SIGUSR1);
721 signal_unregister(SIGHUP);
722 signal_unregister(SIGQUIT);
723
William Lallemandb3f2be32018-09-11 10:06:18 +0200724 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
725 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
726 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
727 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
728 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
729 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
730
731 mworker_unblock_signals();
732 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100733 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200734
William Lallemandbc193052018-09-11 10:06:26 +0200735 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
736 some SIGCHLD were lost */
737
William Lallemandb3f2be32018-09-11 10:06:18 +0200738 global.nbthread = 1;
739 relative_pid = 1;
740 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100741 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200742
William Lallemand2672eb92018-12-14 15:52:39 +0100743#ifdef USE_THREAD
744 tid_bit = 1;
745 all_threads_mask = 1;
746#endif
747
William Lallemandb3f2be32018-09-11 10:06:18 +0200748 jobs++; /* this is the "master" job, we want to take care of the
749 signals even if there is no listener so the poll loop don't
750 leave */
751
752 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200753 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200754}
William Lallemandcb11fd22017-06-01 17:38:52 +0200755
756/*
757 * Reexec the process in failure mode, instead of exiting
758 */
759void reexec_on_failure()
760{
761 if (!atexit_flag)
762 return;
763
764 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
765
Christopher Faulet767a84b2017-11-24 16:50:31 +0100766 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200767 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200768}
William Lallemand73b85e72017-06-01 17:38:51 +0200769
770
771/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200772 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
773 * a signal zero to all subscribers. This means that it's as easy as
774 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200775 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100776static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200777{
778 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200779 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100780 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200781}
782
783/*
784 * upon SIGTTOU, we pause everything
785 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100786static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200787{
788 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100789 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200790}
791
792/*
793 * upon SIGTTIN, let's have a soft stop.
794 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100795static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200796{
Willy Tarreaube58c382011-07-24 18:28:10 +0200797 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200798}
799
800/*
801 * this function dumps every server's state when the process receives SIGHUP.
802 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100803static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200804{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100805 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200806
Christopher Faulet767a84b2017-11-24 16:50:31 +0100807 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200808 while (p) {
809 struct server *s = p->srv;
810
811 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
812 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100813 chunk_printf(&trash,
814 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
815 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200816 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100817 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200818 ha_warning("%s\n", trash.area);
819 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200820 s = s->next;
821 }
822
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200823 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
824 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100825 chunk_printf(&trash,
826 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
827 p->id,
828 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 +0200829 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100830 chunk_printf(&trash,
831 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
832 p->id,
833 (p->srv_bck) ? "is running on backup servers" : "has no server available",
834 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 +0200835 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100836 chunk_printf(&trash,
837 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
838 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
839 p->id, p->srv_act, p->srv_bck,
840 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 +0200841 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200842 ha_warning("%s\n", trash.area);
843 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200844
845 p = p->next;
846 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200847}
848
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100849static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200850{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200851 /* dump memory usage then free everything possible */
852 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100853 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200854}
855
William Lallemande1340412017-12-28 16:09:36 +0100856/*
857 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
858 * If <fd> < 0, it opens /dev/null and use it to dup
859 *
860 * In the case of chrooting, you have to open /dev/null before the chroot, and
861 * pass the <fd> to this function
862 */
863static void stdio_quiet(int fd)
864{
865 if (fd < 0)
866 fd = open("/dev/null", O_RDWR, 0);
867
868 if (fd > -1) {
869 fclose(stdin);
870 fclose(stdout);
871 fclose(stderr);
872
873 dup2(fd, 0);
874 dup2(fd, 1);
875 dup2(fd, 2);
876 if (fd > 2)
877 close(fd);
878 return;
879 }
880
881 ha_alert("Cannot open /dev/null\n");
882 exit(EXIT_FAILURE);
883}
884
885
Joseph Herlant03420902018-11-15 10:41:50 -0800886/* This function checks if cfg_cfgfiles contains directories.
887 * If it finds one, it adds all the files (and only files) it contains
888 * in cfg_cfgfiles in place of the directory (and removes the directory).
889 * It adds the files in lexical order.
890 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200891 * It doesn't add files with name starting with '.'
892 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100893static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200894{
895 struct wordlist *wl, *wlb;
896 char *err = NULL;
897
898 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
899 struct stat file_stat;
900 struct dirent **dir_entries = NULL;
901 int dir_entries_nb;
902 int dir_entries_it;
903
904 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100905 ha_alert("Cannot open configuration file/directory %s : %s\n",
906 wl->s,
907 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200908 exit(1);
909 }
910
911 if (!S_ISDIR(file_stat.st_mode))
912 continue;
913
914 /* from this point wl->s is a directory */
915
916 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
917 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100918 ha_alert("Cannot open configuration directory %s : %s\n",
919 wl->s,
920 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200921 exit(1);
922 }
923
924 /* for each element in the directory wl->s */
925 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
926 struct dirent *dir_entry = dir_entries[dir_entries_it];
927 char *filename = NULL;
928 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
929
930 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -0800931 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200932 */
933 if (dir_entry->d_name[0] == '.' ||
934 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
935 goto next_dir_entry;
936
937 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100938 ha_alert("Cannot load configuration files %s : out of memory.\n",
939 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200940 exit(1);
941 }
942
943 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100944 ha_alert("Cannot open configuration file %s : %s\n",
945 wl->s,
946 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200947 exit(1);
948 }
949
950 /* don't add anything else than regular file in cfg_cfgfiles
951 * this way we avoid loops
952 */
953 if (!S_ISREG(file_stat.st_mode))
954 goto next_dir_entry;
955
956 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100957 ha_alert("Cannot load configuration files %s : %s\n",
958 filename,
959 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200960 exit(1);
961 }
962
963next_dir_entry:
964 free(filename);
965 free(dir_entry);
966 }
967
968 free(dir_entries);
969
970 /* remove the current directory (wl) from cfg_cfgfiles */
971 free(wl->s);
972 LIST_DEL(&wl->list);
973 free(wl);
974 }
975
976 free(err);
977}
978
Olivier Houchardf73629d2017-04-05 22:33:04 +0200979static int get_old_sockets(const char *unixsocket)
980{
981 char *cmsgbuf = NULL, *tmpbuf = NULL;
982 int *tmpfd = NULL;
983 struct sockaddr_un addr;
984 struct cmsghdr *cmsg;
985 struct msghdr msghdr;
986 struct iovec iov;
987 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +0200988 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +0200989 int sock = -1;
990 int ret = -1;
991 int ret2 = -1;
992 int fd_nb;
993 int got_fd = 0;
994 int i = 0;
995 size_t maxoff = 0, curoff = 0;
996
997 memset(&msghdr, 0, sizeof(msghdr));
998 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
999 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001000 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001001 goto out;
1002 }
1003 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1004 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001005 ha_warning("Failed to connect to the old process socket '%s'\n",
1006 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001007 goto out;
1008 }
1009 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1010 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1011 addr.sun_family = PF_UNIX;
1012 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1013 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001014 ha_warning("Failed to connect to the old process socket '%s'\n",
1015 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001016 goto out;
1017 }
Olivier Houchard54740872017-04-06 14:45:14 +02001018 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001019 iov.iov_base = &fd_nb;
1020 iov.iov_len = sizeof(fd_nb);
1021 msghdr.msg_iov = &iov;
1022 msghdr.msg_iovlen = 1;
1023 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1024 /* First, get the number of file descriptors to be received */
1025 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001026 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001027 goto out;
1028 }
1029 if (fd_nb == 0) {
1030 ret = 0;
1031 goto out;
1032 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001033 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001034 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001035 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001036 goto out;
1037 }
1038 tmpfd = malloc(fd_nb * sizeof(int));
1039 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001040 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001041 goto out;
1042 }
1043 msghdr.msg_control = cmsgbuf;
1044 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001045 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001046 do {
1047 int ret3;
1048
1049 iov.iov_base = tmpbuf + curoff;
1050 ret = recvmsg(sock, &msghdr, 0);
1051 if (ret == -1 && errno == EINTR)
1052 continue;
1053 if (ret <= 0)
1054 break;
1055 /* Send an ack to let the sender know we got the sockets
1056 * and it can send some more
1057 */
1058 do {
1059 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1060 } while (ret3 == -1 && errno == EINTR);
1061 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1062 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1063 if (cmsg->cmsg_level == SOL_SOCKET &&
1064 cmsg->cmsg_type == SCM_RIGHTS) {
1065 size_t totlen = cmsg->cmsg_len -
1066 CMSG_LEN(0);
1067 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001068 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001069 goto out;
1070 }
1071 /*
1072 * Be paranoid and use memcpy() to avoid any
1073 * potential alignement issue.
1074 */
1075 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1076 got_fd += totlen / sizeof(int);
1077 }
1078 }
1079 curoff += ret;
1080 } while (got_fd < fd_nb);
1081
1082 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001083 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1084 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001085 goto out;
1086 }
1087 maxoff = curoff;
1088 curoff = 0;
1089 for (i = 0; i < got_fd; i++) {
1090 int fd = tmpfd[i];
1091 socklen_t socklen;
1092 int len;
1093
1094 xfer_sock = calloc(1, sizeof(*xfer_sock));
1095 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001096 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001097 break;
1098 }
1099 xfer_sock->fd = -1;
1100
1101 socklen = sizeof(xfer_sock->addr);
1102 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001103 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001104 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001105 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001106 continue;
1107 }
1108 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001109 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001110 goto out;
1111 }
1112 len = tmpbuf[curoff++];
1113 if (len > 0) {
1114 /* We have a namespace */
1115 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001116 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001117 goto out;
1118 }
1119 xfer_sock->namespace = malloc(len + 1);
1120 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001121 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001122 goto out;
1123 }
1124 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1125 xfer_sock->namespace[len] = 0;
1126 curoff += len;
1127 }
1128 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001129 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001130 goto out;
1131 }
1132 len = tmpbuf[curoff++];
1133 if (len > 0) {
1134 /* We have an interface */
1135 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001136 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001137 goto out;
1138 }
1139 xfer_sock->iface = malloc(len + 1);
1140 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001141 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001142 goto out;
1143 }
1144 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001145 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001146 curoff += len;
1147 }
1148 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001149 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001150 goto out;
1151 }
1152 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1153 sizeof(xfer_sock->options));
1154 curoff += sizeof(xfer_sock->options);
1155
1156 xfer_sock->fd = fd;
1157 if (xfer_sock_list)
1158 xfer_sock_list->prev = xfer_sock;
1159 xfer_sock->next = xfer_sock_list;
1160 xfer_sock->prev = NULL;
1161 xfer_sock_list = xfer_sock;
1162 xfer_sock = NULL;
1163 }
1164
1165 ret2 = 0;
1166out:
1167 /* If we failed midway make sure to close the remaining
1168 * file descriptors
1169 */
1170 if (tmpfd != NULL && i < got_fd) {
1171 for (; i < got_fd; i++) {
1172 close(tmpfd[i]);
1173 }
1174 }
1175 free(tmpbuf);
1176 free(tmpfd);
1177 free(cmsgbuf);
1178 if (sock != -1)
1179 close(sock);
1180 if (xfer_sock) {
1181 free(xfer_sock->namespace);
1182 free(xfer_sock->iface);
1183 if (xfer_sock->fd != -1)
1184 close(xfer_sock->fd);
1185 free(xfer_sock);
1186 }
1187 return (ret2);
1188}
1189
Willy Tarreaubaaee002006-06-26 02:48:02 +02001190/*
William Lallemand73b85e72017-06-01 17:38:51 +02001191 * copy and cleanup the current argv
1192 * Remove the -sf /-st parameters
1193 * Return an allocated copy of argv
1194 */
1195
1196static char **copy_argv(int argc, char **argv)
1197{
1198 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001199 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001200
1201 newargv = calloc(argc + 2, sizeof(char *));
1202 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001203 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001204 return NULL;
1205 }
1206
William Lallemand2bf6d622017-06-20 11:20:23 +02001207 while (i < argc) {
1208 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001209 if (i > 0 && argv[i][0] == '-' &&
1210 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001211 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001212 i++;
1213 while (i < argc && argv[i][0] != '-') {
1214 i++;
1215 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001216 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001217 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001218
1219 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001220 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001221
William Lallemand73b85e72017-06-01 17:38:51 +02001222 return newargv;
1223}
1224
Willy Tarreau5a023f02019-03-01 14:19:31 +01001225/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1226 * setting, and returns it. It may return -1 meaning "unlimited" if some
1227 * unlimited proxies have been found and the global.maxconn value is not yet
1228 * set. It may also return a value greater than maxconn if it's not yet set.
1229 * Note that a value of zero means there is no need for pipes. -1 is never
1230 * returned if global.maxconn is valid.
1231 */
1232static int compute_ideal_maxpipes()
1233{
1234 struct proxy *cur;
1235 int nbfe = 0, nbbe = 0;
1236 int unlimited = 0;
1237 int pipes;
1238 int max;
1239
1240 for (cur = proxies_list; cur; cur = cur->next) {
1241 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1242 if (cur->cap & PR_CAP_FE) {
1243 max = cur->maxconn;
1244 nbfe += max;
1245 if (!max) {
1246 unlimited = 1;
1247 break;
1248 }
1249 }
1250 if (cur->cap & PR_CAP_BE) {
1251 max = cur->fullconn ? cur->fullconn : global.maxconn;
1252 nbbe += max;
1253 if (!max) {
1254 unlimited = 1;
1255 break;
1256 }
1257 }
1258 }
1259 }
1260
1261 pipes = MAX(nbfe, nbbe);
1262 if (global.maxconn) {
1263 if (pipes > global.maxconn || unlimited)
1264 pipes = global.maxconn;
1265 } else if (unlimited) {
1266 pipes = -1;
1267 }
1268
1269 return pipes >= 4 ? pipes / 4 : pipes;
1270}
1271
Willy Tarreauac350932019-03-01 15:43:14 +01001272/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1273 * rlimits and computes an ideal maxconn. It's meant to be called only when
1274 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001275 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1276 * default 100) is returned as it is expected that it will even run on tight
1277 * environments, and will maintain compatibility with previous packages that
1278 * used to rely on this value as the default one. The system will emit a
1279 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001280 */
1281static int compute_ideal_maxconn()
1282{
1283 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1284 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1285 int pipes = compute_ideal_maxpipes();
1286 int remain = rlim_fd_cur_at_boot;
1287 int maxconn;
1288
1289 /* we have to take into account these elements :
1290 * - number of engine_fds, which inflates the number of FD needed per
1291 * connection by this number.
1292 * - number of pipes per connection on average : for the unlimited
1293 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1294 * fixed value of 2*pipes.
1295 * - two FDs per connection
1296 */
1297
1298 /* subtract listeners and checks */
1299 remain -= global.maxsock;
1300
Willy Tarreau3f200852019-03-14 19:13:17 +01001301 /* one epoll_fd/kqueue_fd per thread */
1302 remain -= global.nbthread;
1303
1304 /* one wake-up pipe (2 fd) per thread */
1305 remain -= 2 * global.nbthread;
1306
Willy Tarreauac350932019-03-01 15:43:14 +01001307 /* Fixed pipes values : we only subtract them if they're not larger
1308 * than the remaining FDs because pipes are optional.
1309 */
1310 if (pipes >= 0 && pipes * 2 < remain)
1311 remain -= pipes * 2;
1312
1313 if (pipes < 0) {
1314 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1315 * = maxconn * (2 + 0.5 + engine_fds)
1316 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1317 */
1318 maxconn = 2 * remain / (5 + 2 * engine_fds);
1319 } else {
1320 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1321 * = maxconn * (2 + engine_fds)
1322 */
1323 maxconn = remain / (2 + engine_fds);
1324 }
1325
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001326 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001327}
1328
William Lallemand73b85e72017-06-01 17:38:51 +02001329/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001330 * This function initializes all the necessary variables. It only returns
1331 * if everything is OK. If something fails, it exits.
1332 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001333static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001334{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001335 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001336 char *tmp;
1337 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001338 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001339 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001340 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001341 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001342 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001343 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001344 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001345 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001346
Christopher Faulete3a5e352017-10-24 13:53:54 +02001347 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001348 next_argv = copy_argv(argc, argv);
1349
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001350 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001351 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001352 exit(1);
1353 }
David du Colombier7af46052012-05-16 14:16:48 +02001354
Emeric Brun2b920a12010-09-23 18:30:22 +02001355 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1356 * the string in case of truncation, and at least FreeBSD appears not to do
1357 * it.
1358 */
1359 memset(hostname, 0, sizeof(hostname));
1360 gethostname(hostname, sizeof(hostname) - 1);
1361 memset(localpeer, 0, sizeof(localpeer));
1362 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001363 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001364
Willy Tarreaubaaee002006-06-26 02:48:02 +02001365 /*
1366 * Initialize the previously static variables.
1367 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001368
Willy Tarreau173d9952018-01-26 21:48:23 +01001369 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001370 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001371
Willy Tarreaubaaee002006-06-26 02:48:02 +02001372
1373#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001374 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001375#endif
1376
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001377 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001378 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001379 start_date = now;
1380
Willy Tarreau84310e22014-02-14 11:59:04 +01001381 srandom(now_ms - getpid());
1382
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001383 if (init_acl() != 0)
1384 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001385
Willy Tarreau8280d642009-09-23 23:37:52 +02001386 /* warning, we init buffers later */
Willy Tarreau04f1e2d2018-09-10 18:04:24 +02001387 if (!init_http(&err_msg)) {
1388 ha_alert("%s. Aborting.\n", err_msg);
1389 free(err_msg);
1390 abort();
1391 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001392
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001393 /* Initialise lua. */
1394 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001395
Christopher Fauletff2613e2016-11-09 11:36:17 +01001396 /* Initialize process vars */
1397 vars_init(&global.vars, SCOPE_PROC);
1398
Willy Tarreau43b78992009-01-25 15:42:27 +01001399 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001400#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001401 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001402#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001403#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001404 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001405#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001406#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001407 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001408#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001409#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001410 global.tune.options |= GTUNE_USE_EVPORTS;
1411#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001412#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001413 global.tune.options |= GTUNE_USE_SPLICE;
1414#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001415#if defined(USE_GETADDRINFO)
1416 global.tune.options |= GTUNE_USE_GAI;
1417#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001418#if defined(SO_REUSEPORT)
1419 global.tune.options |= GTUNE_USE_REUSEPORT;
1420#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001421
1422 pid = getpid();
1423 progname = *argv;
1424 while ((tmp = strchr(progname, '/')) != NULL)
1425 progname = tmp + 1;
1426
Kevinm48936af2010-12-22 16:08:21 +00001427 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001428 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001429
Willy Tarreaubaaee002006-06-26 02:48:02 +02001430 argc--; argv++;
1431 while (argc > 0) {
1432 char *flag;
1433
1434 if (**argv == '-') {
1435 flag = *argv+1;
1436
1437 /* 1 arg */
1438 if (*flag == 'v') {
1439 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001440 if (flag[1] == 'v') /* -vv */
1441 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001442 exit(0);
1443 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001444#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001446 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001447#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001448#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001449 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001450 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001451#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001452#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001453 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001454 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001455#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001456#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001457 else if (*flag == 'd' && flag[1] == 'v')
1458 global.tune.options &= ~GTUNE_USE_EVPORTS;
1459#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001460#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001461 else if (*flag == 'd' && flag[1] == 'S')
1462 global.tune.options &= ~GTUNE_USE_SPLICE;
1463#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001464#if defined(USE_GETADDRINFO)
1465 else if (*flag == 'd' && flag[1] == 'G')
1466 global.tune.options &= ~GTUNE_USE_GAI;
1467#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001468#if defined(SO_REUSEPORT)
1469 else if (*flag == 'd' && flag[1] == 'R')
1470 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1471#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001472 else if (*flag == 'd' && flag[1] == 'V')
1473 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001474 else if (*flag == 'V')
1475 arg_mode |= MODE_VERBOSE;
1476 else if (*flag == 'd' && flag[1] == 'b')
1477 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001478 else if (*flag == 'd' && flag[1] == 'M')
1479 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001480 else if (*flag == 'd' && flag[1] == 'r')
1481 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001482 else if (*flag == 'd')
1483 arg_mode |= MODE_DEBUG;
1484 else if (*flag == 'c')
1485 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001486 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001487 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001488 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001489 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001490#if defined(USE_SYSTEMD)
1491 global.tune.options |= GTUNE_USE_SYSTEMD;
1492#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001493 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 +01001494 usage(progname);
1495#endif
1496 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001497 else if (*flag == 'W')
1498 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001499 else if (*flag == 'q')
1500 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001501 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001502 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001503 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001504 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001505 }
William Lallemand4fc09692017-06-19 16:37:19 +02001506 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001507 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001508 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001509
Olivier Houchardf73629d2017-04-05 22:33:04 +02001510 argv++;
1511 argc--;
1512 }
William Lallemande7361152018-10-26 14:47:36 +02001513 else if (*flag == 'S') {
1514 struct wordlist *c;
1515
1516 if (argc <= 1 || argv[1][0] == '-') {
1517 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1518 usage(progname);
1519 }
1520 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1521 ha_alert("Cannot allocate memory\n");
1522 exit(EXIT_FAILURE);
1523 }
1524 LIST_ADD(&mworker_cli_conf, &c->list);
1525
1526 argv++;
1527 argc--;
1528 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001529 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1530 /* list of pids to finish ('f') or terminate ('t') */
1531
1532 if (flag[1] == 'f')
1533 oldpids_sig = SIGUSR1; /* finish then exit */
1534 else
1535 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001536 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001537 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001538 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1539 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001540 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001541 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001542 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001543 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001544 errno = 0;
1545 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1546 if (errno) {
1547 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1548 flag,
1549 *argv, strerror(errno));
1550 exit(1);
1551 } else if (endptr && strlen(endptr)) {
1552 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001553 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001554 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1555 flag, endptr);
1556 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001557 }
Chris Lane236062f2018-02-05 23:15:44 +00001558 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001559 if (oldpids[nb_oldpids] <= 0)
1560 usage(progname);
1561 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001562 }
1563 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001564 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1565 /* now that's a cfgfile list */
1566 argv++; argc--;
1567 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001568 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001569 ha_alert("Cannot load configuration file/directory %s : %s\n",
1570 *argv,
1571 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001572 exit(1);
1573 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001574 argv++; argc--;
1575 }
1576 break;
1577 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001578 else { /* >=2 args */
1579 argv++; argc--;
1580 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001581 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001582
1583 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001584 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001585 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001586 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001587 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001588 case 'L' :
1589 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1590 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1591 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001592 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001593 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001594 ha_alert("Cannot load configuration file/directory %s : %s\n",
1595 *argv,
1596 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001597 exit(1);
1598 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001599 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001600 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001601 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001602 }
1603 }
1604 }
1605 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001606 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001607 argv++; argc--;
1608 }
1609
Christopher Faulete3a5e352017-10-24 13:53:54 +02001610 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1611 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001612
William Lallemand944e6192018-11-21 15:48:31 +01001613 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001614 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001615 global.mode |= MODE_MWORKER_WAIT;
1616 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001617 }
1618
1619 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1620 atexit_flag = 1;
1621 atexit(reexec_on_failure);
1622 }
1623
Willy Tarreau576132e2011-09-10 19:26:56 +02001624 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001625 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001626 exit(1);
1627 }
1628
Willy Tarreaubaaee002006-06-26 02:48:02 +02001629 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001630
1631 init_default_instance();
1632
William Lallemand944e6192018-11-21 15:48:31 +01001633 /* in wait mode, we don't try to read the configuration files */
1634 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001635 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001636
William Lallemand944e6192018-11-21 15:48:31 +01001637 /* handle cfgfiles that are actually directories */
1638 cfgfiles_expand_directories();
1639
1640 if (LIST_ISEMPTY(&cfg_cfgfiles))
1641 usage(progname);
1642
1643
1644 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1645 int ret;
1646
William Lallemand7b302d82019-05-20 11:15:37 +02001647 if (trash->data)
1648 chunk_appendf(trash, ";");
1649
1650 chunk_appendf(trash, "%s", wl->s);
1651
William Lallemand944e6192018-11-21 15:48:31 +01001652 ret = readcfgfile(wl->s);
1653 if (ret == -1) {
1654 ha_alert("Could not open configuration file %s : %s\n",
1655 wl->s, strerror(errno));
1656 exit(1);
1657 }
1658 if (ret & (ERR_ABORT|ERR_FATAL))
1659 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1660 err_code |= ret;
1661 if (err_code & ERR_ABORT)
1662 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001663 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001664
William Lallemand944e6192018-11-21 15:48:31 +01001665 /* do not try to resolve arguments nor to spot inconsistencies when
1666 * the configuration contains fatal errors caused by files not found
1667 * or failed memory allocations.
1668 */
1669 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1670 ha_alert("Fatal errors found in configuration.\n");
1671 exit(1);
1672 }
William Lallemand7b302d82019-05-20 11:15:37 +02001673 if (trash->data)
1674 setenv("HAPROXY_CFGFILES", trash->area, 1);
1675
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001676 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001677 if (global.mode & MODE_MWORKER) {
1678 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001679 struct mworker_proc *tmproc;
1680
William Lallemand482f9a92019-04-12 16:15:00 +02001681 setenv("HAPROXY_MWORKER", "1", 1);
1682
William Lallemand16dd1b32018-11-19 18:46:18 +01001683 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1684
William Lallemandf3a86832019-04-01 11:29:58 +02001685 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001686 if (!tmproc) {
1687 ha_alert("Cannot allocate process structures.\n");
1688 exit(EXIT_FAILURE);
1689 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001690 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001691 tmproc->reloads = 0;
1692 tmproc->relative_pid = 0;
1693 tmproc->pid = pid;
1694 tmproc->timestamp = start_date.tv_sec;
1695 tmproc->ipc_fd[0] = -1;
1696 tmproc->ipc_fd[1] = -1;
1697
1698 proc_self = tmproc;
1699
1700 LIST_ADDQ(&proc_list, &tmproc->list);
1701 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001702
1703 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001704
William Lallemandf3a86832019-04-01 11:29:58 +02001705 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001706 if (!tmproc) {
1707 ha_alert("Cannot allocate process structures.\n");
1708 exit(EXIT_FAILURE);
1709 }
1710
William Lallemand8f7069a2019-04-12 16:09:23 +02001711 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001712 tmproc->pid = -1;
1713 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001714 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001715 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001716 tmproc->ipc_fd[0] = -1;
1717 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001718
1719 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1720 exit(EXIT_FAILURE);
1721 }
1722
1723 LIST_ADDQ(&proc_list, &tmproc->list);
1724 }
William Lallemand944e6192018-11-21 15:48:31 +01001725 }
1726 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1727 struct wordlist *it, *c;
1728
William Lallemand1b663612018-10-26 14:47:33 +02001729 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001730
William Lallemande7361152018-10-26 14:47:36 +02001731
William Lallemand550db6d2018-11-06 17:37:12 +01001732 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001733
William Lallemand550db6d2018-11-06 17:37:12 +01001734 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001735 ha_alert("Can't create the master's CLI.\n");
1736 exit(EXIT_FAILURE);
1737 }
William Lallemande7361152018-10-26 14:47:36 +02001738
William Lallemand550db6d2018-11-06 17:37:12 +01001739 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1740
1741 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1742 ha_alert("Can't create the master's CLI.\n");
1743 exit(EXIT_FAILURE);
1744 }
1745 LIST_DEL(&c->list);
1746 free(c->s);
1747 free(c);
1748 }
1749 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001750 }
1751
Willy Tarreaubb925012009-07-23 13:36:36 +02001752 err_code |= check_config_validity();
1753 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001754 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001755 exit(1);
1756 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001757
Willy Tarreau0f936722019-04-11 14:47:08 +02001758 pattern_finalize_config();
1759
Willy Tarreau70060452015-12-14 12:46:07 +01001760 /* recompute the amount of per-process memory depending on nbproc and
1761 * the shared SSL cache size (allowed to exist in all processes).
1762 */
1763 if (global.rlimit_memmax_all) {
1764#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1765 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1766
1767 global.rlimit_memmax =
1768 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1769 ssl_cache_bytes) / global.nbproc +
1770 ssl_cache_bytes + 1048575LL) / 1048576LL;
1771#else
1772 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1773#endif
1774 }
1775
Willy Tarreaue5733232019-05-22 19:24:06 +02001776#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001777 err_code |= netns_init();
1778 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001779 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001780 exit(1);
1781 }
1782#endif
1783
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001784 /* Apply server states */
1785 apply_server_state();
1786
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001787 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001788 srv_compute_all_admin_states(px);
1789
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001790 /* Apply servers' configured address */
1791 err_code |= srv_init_addr();
1792 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001793 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001794 exit(1);
1795 }
1796
Willy Tarreaubaaee002006-06-26 02:48:02 +02001797 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001798 struct peers *pr;
1799 struct proxy *px;
1800
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001801 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001802 if (pr->peers_fe)
1803 break;
1804
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001805 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001806 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001807 break;
1808
1809 if (pr || px) {
1810 /* At least one peer or one listener has been found */
1811 qfprintf(stdout, "Configuration file is valid\n");
1812 exit(0);
1813 }
1814 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1815 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001816 }
1817
Emeric Brunc60def82017-09-27 14:59:38 +02001818 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001819 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001820 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001821 exit(1);
1822 }
1823 /* very simple initialization, users will queue the task if needed */
1824 global_listener_queue_task->context = NULL; /* not even a context! */
1825 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001826
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001827 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001828 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001829
Willy Tarreaue6945732016-12-21 19:57:00 +01001830 list_for_each_entry(pcf, &post_check_list, list) {
1831 err_code |= pcf->fct();
1832 if (err_code & (ERR_ABORT|ERR_FATAL))
1833 exit(1);
1834 }
1835
Willy Tarreaubaaee002006-06-26 02:48:02 +02001836 if (cfg_maxconn > 0)
1837 global.maxconn = cfg_maxconn;
1838
Willy Tarreau8d687d82019-03-01 09:39:42 +01001839 if (global.stats_fe)
1840 global.maxsock += global.stats_fe->maxconn;
1841
1842 if (cfg_peers) {
1843 /* peers also need to bypass global maxconn */
1844 struct peers *p = cfg_peers;
1845
1846 for (p = cfg_peers; p; p = p->next)
1847 if (p->peers_fe)
1848 global.maxsock += p->peers_fe->maxconn;
1849 }
1850
Willy Tarreaubaaee002006-06-26 02:48:02 +02001851 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001852 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001853 global.pidfile = strdup(cfg_pidfile);
1854 }
1855
Willy Tarreaud0256482015-01-15 21:45:22 +01001856 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001857 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1858 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1859 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
1860 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01001861 *
1862 * If memmax is set, then it depends on which values are set. If
1863 * maxsslconn is set, we use memmax to determine how many cleartext
1864 * connections may be added, and set maxconn to the sum of the two.
1865 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1866 * the remaining amount of memory between memmax and the cleartext
1867 * connections. If neither are set, then it is considered that all
1868 * connections are SSL-capable, and maxconn is computed based on this,
1869 * then maxsslconn accordingly. We need to know if SSL is used on the
1870 * frontends, backends, or both, because when it's used on both sides,
1871 * we need twice the value for maxsslconn, but we only count the
1872 * handshake once since it is not performed on the two sides at the
1873 * same time (frontend-side is terminated before backend-side begins).
1874 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001875 * ssl_handshake_cost during its initialization. In any case, if
1876 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1877 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001878 */
Willy Tarreauac350932019-03-01 15:43:14 +01001879 ideal_maxconn = compute_ideal_maxconn();
1880
Willy Tarreaud0256482015-01-15 21:45:22 +01001881 if (!global.rlimit_memmax) {
1882 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01001883 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01001884 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1885 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1886 }
1887 }
1888#ifdef USE_OPENSSL
1889 else if (!global.maxconn && !global.maxsslconn &&
1890 (global.ssl_used_frontend || global.ssl_used_backend)) {
1891 /* memmax is set, compute everything automatically. Here we want
1892 * to ensure that all SSL connections will be served. We take
1893 * care of the number of sides where SSL is used, and consider
1894 * the worst case : SSL used on both sides and doing a handshake
1895 * simultaneously. Note that we can't have more than maxconn
1896 * handshakes at a time by definition, so for the worst case of
1897 * two SSL conns per connection, we count a single handshake.
1898 */
1899 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1900 int64_t mem = global.rlimit_memmax * 1048576ULL;
1901
1902 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1903 mem -= global.maxzlibmem;
1904 mem = mem * MEM_USABLE_RATIO;
1905
1906 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001907 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001908 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1909 global.ssl_handshake_max_cost); // 1 handshake per connection max
1910
Willy Tarreauac350932019-03-01 15:43:14 +01001911 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001912 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001913#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01001914 if (global.maxconn > SYSTEM_MAXCONN)
1915 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001916#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001917 global.maxsslconn = sides * global.maxconn;
1918 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1919 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1920 global.maxconn, global.maxsslconn);
1921 }
1922 else if (!global.maxsslconn &&
1923 (global.ssl_used_frontend || global.ssl_used_backend)) {
1924 /* memmax and maxconn are known, compute maxsslconn automatically.
1925 * maxsslconn being forced, we don't know how many of it will be
1926 * on each side if both sides are being used. The worst case is
1927 * when all connections use only one SSL instance because
1928 * handshakes may be on two sides at the same time.
1929 */
1930 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1931 int64_t mem = global.rlimit_memmax * 1048576ULL;
1932 int64_t sslmem;
1933
1934 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1935 mem -= global.maxzlibmem;
1936 mem = mem * MEM_USABLE_RATIO;
1937
Willy Tarreau87b09662015-04-03 00:22:06 +02001938 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001939 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1940 global.maxsslconn = round_2dig(global.maxsslconn);
1941
1942 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001943 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1944 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1945 "without SSL is %d, but %d was found and SSL is in use.\n",
1946 global.rlimit_memmax,
1947 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
1948 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001949 exit(1);
1950 }
1951
1952 if (global.maxsslconn > sides * global.maxconn)
1953 global.maxsslconn = sides * global.maxconn;
1954
1955 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1956 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1957 }
1958#endif
1959 else if (!global.maxconn) {
1960 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1961 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1962 int64_t mem = global.rlimit_memmax * 1048576ULL;
1963 int64_t clearmem;
1964
1965 if (global.ssl_used_frontend || global.ssl_used_backend)
1966 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1967
1968 mem -= global.maxzlibmem;
1969 mem = mem * MEM_USABLE_RATIO;
1970
1971 clearmem = mem;
1972 if (sides)
1973 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1974
Willy Tarreau87b09662015-04-03 00:22:06 +02001975 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01001976 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001977 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001978#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01001979 if (global.maxconn > SYSTEM_MAXCONN)
1980 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001981#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001982
1983 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001984 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1985 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1986 "is %d, but %d was found.\n",
1987 global.rlimit_memmax,
1988 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1989 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001990 exit(1);
1991 }
1992
1993 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1994 if (sides && global.maxsslconn > sides * global.maxconn) {
1995 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
1996 "to be limited to %d. Better reduce global.maxsslconn to get more "
1997 "room for extra connections.\n", global.maxsslconn, global.maxconn);
1998 }
1999 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2000 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002001 }
2002
Willy Tarreau5a023f02019-03-01 14:19:31 +01002003 if (!global.maxpipes)
2004 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002005
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002006 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002007 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002008 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002009 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2010 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2011
Emeric Brunece0c332017-12-06 13:51:49 +01002012 /* compute fd used by async engines */
2013 if (global.ssl_used_async_engines) {
2014 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2015 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2016 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002017
Olivier Houchard88698d92019-04-16 19:07:22 +02002018 /* update connection pool thresholds */
2019 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2020 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2021
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002022 proxy_adjust_all_maxconn();
2023
Willy Tarreau1db37712007-06-03 17:16:49 +02002024 if (global.tune.maxpollevents <= 0)
2025 global.tune.maxpollevents = MAX_POLL_EVENTS;
2026
Olivier Houchard1599b802018-05-24 18:59:04 +02002027 if (global.tune.runqueue_depth <= 0)
2028 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2029
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002030 if (global.tune.recv_enough == 0)
2031 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2032
Willy Tarreau27097842015-09-28 13:53:23 +02002033 if (global.tune.maxrewrite < 0)
2034 global.tune.maxrewrite = MAXREWRITE;
2035
Willy Tarreau27a674e2009-08-17 07:23:33 +02002036 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2037 global.tune.maxrewrite = global.tune.bufsize / 2;
2038
Willy Tarreaubaaee002006-06-26 02:48:02 +02002039 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2040 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002041 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002042 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2043 }
2044
William Lallemand095ba4c2017-06-01 17:38:50 +02002045 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002046 /* command line daemon mode inhibits foreground and debug modes mode */
2047 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002048 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002049 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002050
2051 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002052
William Lallemand095ba4c2017-06-01 17:38:50 +02002053 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002054 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002055 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002056 }
2057
William Lallemand095ba4c2017-06-01 17:38:50 +02002058 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002059 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002060 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 +02002061 global.nbproc = 1;
2062 }
2063
2064 if (global.nbproc < 1)
2065 global.nbproc = 1;
2066
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002067 if (global.nbthread < 1)
2068 global.nbthread = 1;
2069
Christopher Faulet3ef26392017-08-29 16:46:57 +02002070 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002071 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002072 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002073 exit(1);
2074 }
2075
Christopher Faulet96d44832017-11-14 22:02:30 +01002076 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002077 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002078 exit(1);
2079 }
2080
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002081 /*
2082 * Note: we could register external pollers here.
2083 * Built-in pollers have been registered before main().
2084 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002085
Willy Tarreau43b78992009-01-25 15:42:27 +01002086 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002087 disable_poller("kqueue");
2088
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002089 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2090 disable_poller("evports");
2091
Willy Tarreau43b78992009-01-25 15:42:27 +01002092 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002093 disable_poller("epoll");
2094
Willy Tarreau43b78992009-01-25 15:42:27 +01002095 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002096 disable_poller("poll");
2097
Willy Tarreau43b78992009-01-25 15:42:27 +01002098 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002099 disable_poller("select");
2100
2101 /* Note: we could disable any poller by name here */
2102
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002103 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002104 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002105 fprintf(stderr, "\n");
2106 list_filters(stderr);
2107 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002108
Willy Tarreau4f60f162007-04-08 16:39:58 +02002109 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002110 ha_alert("No polling mechanism available.\n"
2111 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2112 " is too low on this platform to support maxconn and the number of listeners\n"
2113 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2114 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2115 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2116 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2117 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2118 " check build settings using 'haproxy -vv'.\n\n",
2119 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002120 exit(1);
2121 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002122 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2123 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002124 }
2125
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002126 if (!global.node)
2127 global.node = strdup(hostname);
2128
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002129 if (!hlua_post_init())
2130 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002131
Maxime de Roucy0f503922016-05-13 23:52:55 +02002132 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002133}
2134
Simon Horman6fb82592011-07-15 13:14:11 +09002135static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002136{
Simon Hormanac821422011-07-15 13:14:09 +09002137 struct acl_term_suite *suite, *suiteb;
2138 struct acl_term *term, *termb;
2139
Simon Horman6fb82592011-07-15 13:14:11 +09002140 if (!cond)
2141 return;
2142
2143 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2144 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2145 LIST_DEL(&term->list);
2146 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002147 }
Simon Horman6fb82592011-07-15 13:14:11 +09002148 LIST_DEL(&suite->list);
2149 free(suite);
2150 }
2151
2152 free(cond);
2153}
2154
2155static void deinit_tcp_rules(struct list *rules)
2156{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002157 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002158
2159 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002160 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002161 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002162 free(trule);
2163 }
2164}
2165
Simon Horman6fb82592011-07-15 13:14:11 +09002166static void deinit_stick_rules(struct list *rules)
2167{
2168 struct sticking_rule *rule, *ruleb;
2169
2170 list_for_each_entry_safe(rule, ruleb, rules, list) {
2171 LIST_DEL(&rule->list);
2172 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002173 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002174 free(rule);
2175 }
2176}
2177
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002178void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002179{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002180 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002181 struct cap_hdr *h,*h_next;
2182 struct server *s,*s_next;
2183 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002184 struct acl_cond *cond, *condb;
2185 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002186 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002187 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002188 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002189 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002190 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01002191 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002192 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002193 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002194 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002195 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002196 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002197 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002198 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002199
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002200 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002201 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002202 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002203 free(p->id);
2204 free(p->check_req);
2205 free(p->cookie_name);
2206 free(p->cookie_domain);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002207 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002208 free(p->capture_name);
2209 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002210 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002211 if (p->conf.logformat_string != default_http_log_format &&
2212 p->conf.logformat_string != default_tcp_log_format &&
2213 p->conf.logformat_string != clf_http_log_format)
2214 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002215
Willy Tarreau62a61232013-04-12 18:13:46 +02002216 free(p->conf.lfs_file);
2217 free(p->conf.uniqueid_format_string);
2218 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002219 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2220 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002221
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002222 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2223 free(p->conf.logformat_sd_string);
2224 free(p->conf.lfsd_file);
2225
Willy Tarreaua534fea2008-08-03 12:19:50 +02002226 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002227 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002228
Willy Tarreauf4f04122010-01-28 18:10:50 +01002229 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
2230 LIST_DEL(&cwl->list);
2231 free(cwl->s);
2232 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002233 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002234
Willy Tarreauf4f04122010-01-28 18:10:50 +01002235 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
2236 LIST_DEL(&cwl->list);
2237 free(cwl->s);
2238 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002239 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002240
Willy Tarreaub80c2302007-11-30 20:51:32 +01002241 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2242 LIST_DEL(&cond->list);
2243 prune_acl_cond(cond);
2244 free(cond);
2245 }
2246
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002247 for (exp = p->req_exp; exp != NULL; ) {
Dragan Dosen26743032019-04-30 15:54:36 +02002248 regex_free(exp->preg);
Willy Tarreau98d04852015-05-26 12:18:29 +02002249 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002250 expb = exp;
2251 exp = exp->next;
2252 free(expb);
2253 }
2254
2255 for (exp = p->rsp_exp; exp != NULL; ) {
Dragan Dosen26743032019-04-30 15:54:36 +02002256 regex_free(exp->preg);
Willy Tarreau98d04852015-05-26 12:18:29 +02002257 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002258 expb = exp;
2259 exp = exp->next;
2260 free(expb);
2261 }
2262
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002263 /* build a list of unique uri_auths */
2264 if (!ua)
2265 ua = p->uri_auth;
2266 else {
2267 /* check if p->uri_auth is unique */
2268 for (uap = ua; uap; uap=uap->next)
2269 if (uap == p->uri_auth)
2270 break;
2271
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002272 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002273 /* add it, if it is */
2274 p->uri_auth->next = ua;
2275 ua = p->uri_auth;
2276 }
2277 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002278
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002279 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2280 LIST_DEL(&acl->list);
2281 prune_acl(acl);
2282 free(acl);
2283 }
2284
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002285 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2286 LIST_DEL(&srule->list);
2287 prune_acl_cond(srule->cond);
2288 free(srule->cond);
2289 free(srule);
2290 }
2291
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002292 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2293 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002294 if (rule->cond) {
2295 prune_acl_cond(rule->cond);
2296 free(rule->cond);
2297 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002298 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002299 free(rule);
2300 }
2301
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002302 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2303 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002304 if (rdr->cond) {
2305 prune_acl_cond(rdr->cond);
2306 free(rdr->cond);
2307 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002308 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002309 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2310 LIST_DEL(&lf->list);
2311 free(lf);
2312 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002313 free(rdr);
2314 }
2315
William Lallemand0f99e342011-10-12 17:50:54 +02002316 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2317 LIST_DEL(&log->list);
2318 free(log);
2319 }
2320
William Lallemand723b73a2012-02-08 16:37:49 +01002321 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2322 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002323 release_sample_expr(lf->expr);
2324 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002325 free(lf);
2326 }
2327
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002328 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2329 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002330 release_sample_expr(lf->expr);
2331 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002332 free(lf);
2333 }
2334
Simon Hormanac821422011-07-15 13:14:09 +09002335 deinit_tcp_rules(&p->tcp_req.inspect_rules);
Kevin Zhu13ebef72019-01-30 16:01:21 +08002336 deinit_tcp_rules(&p->tcp_rep.inspect_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002337 deinit_tcp_rules(&p->tcp_req.l4_rules);
2338
Simon Horman6fb82592011-07-15 13:14:11 +09002339 deinit_stick_rules(&p->storersp_rules);
2340 deinit_stick_rules(&p->sticking_rules);
2341
Willy Tarreaubaaee002006-06-26 02:48:02 +02002342 h = p->req_cap;
2343 while (h) {
2344 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002345 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002346 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002347 free(h);
2348 h = h_next;
2349 }/* end while(h) */
2350
2351 h = p->rsp_cap;
2352 while (h) {
2353 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002354 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002355 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002356 free(h);
2357 h = h_next;
2358 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002359
Willy Tarreaubaaee002006-06-26 02:48:02 +02002360 s = p->srv;
2361 while (s) {
2362 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002363
Willy Tarreauf6562792019-05-07 19:05:35 +02002364 task_destroy(s->check.task);
2365 task_destroy(s->agent.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002366
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002367 if (s->check.wait_list.tasklet)
2368 tasklet_free(s->check.wait_list.tasklet);
2369 if (s->agent.wait_list.tasklet)
2370 tasklet_free(s->agent.wait_list.tasklet);
Dragan Dosen026ef572019-04-30 00:56:20 +02002371
Willy Tarreauf6562792019-05-07 19:05:35 +02002372 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002373
Willy Tarreaua534fea2008-08-03 12:19:50 +02002374 free(s->id);
2375 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002376 free(s->check.bi.area);
2377 free(s->check.bo.area);
2378 free(s->agent.bi.area);
2379 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002380 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002381 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002382 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002383 free(s->idle_conns);
2384 free(s->priv_conns);
2385 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002386 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002387 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002388
2389 if (s->use_ssl || s->check.use_ssl) {
2390 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2391 xprt_get(XPRT_SSL)->destroy_srv(s);
2392 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002393 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002394 free(s);
2395 s = s_next;
2396 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002397
Willy Tarreau4348fad2012-09-20 16:48:07 +02002398 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002399 /*
2400 * Zombie proxy, the listener just pretend to be up
2401 * because they still hold an opened fd.
2402 * Close it and give the listener its real state.
2403 */
2404 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2405 close(l->fd);
2406 l->state = LI_INIT;
2407 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002408 unbind_listener(l);
2409 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002410 LIST_DEL(&l->by_fe);
2411 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002412 free(l->name);
2413 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002414 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002415 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002416
Willy Tarreau4348fad2012-09-20 16:48:07 +02002417 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002418 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002419 if (bind_conf->xprt->destroy_bind_conf)
2420 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002421 free(bind_conf->file);
2422 free(bind_conf->arg);
2423 LIST_DEL(&bind_conf->by_fe);
2424 free(bind_conf);
2425 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002426
Christopher Fauletd7c91962015-04-30 11:48:27 +02002427 flt_deinit(p);
2428
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002429 free(p->desc);
2430 free(p->fwdfor_hdr_name);
2431
Willy Tarreauff011f22011-01-06 17:51:27 +01002432 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002433 free_http_res_rules(&p->http_res_rules);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002434 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002435
Willy Tarreaubafbe012017-11-24 17:34:44 +01002436 pool_destroy(p->req_cap_pool);
2437 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002438 if (p->table)
2439 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002440
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002441 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002442 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002443 HA_SPIN_DESTROY(&p0->lbprm.lock);
2444 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002445 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002446 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002447
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002448 while (ua) {
2449 uap = ua;
2450 ua = ua->next;
2451
Willy Tarreaua534fea2008-08-03 12:19:50 +02002452 free(uap->uri_prefix);
2453 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002454 free(uap->node);
2455 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002456
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002457 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002458 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002459
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002460 free(uap);
2461 }
2462
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002463 userlist_free(userlist);
2464
David Carlier834cb2e2015-09-25 12:02:25 +01002465 cfg_unregister_sections();
2466
Christopher Faulet0132d062017-07-26 15:33:35 +02002467 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002468
Willy Tarreaudd815982007-10-16 12:25:14 +02002469 protocol_unbind_all();
2470
Willy Tarreau05554e62016-12-21 20:46:26 +01002471 list_for_each_entry(pdf, &post_deinit_list, list)
2472 pdf->fct();
2473
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002474 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002475 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002476 free(global.chroot); global.chroot = NULL;
2477 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002478 free(global.node); global.node = NULL;
2479 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002480 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002481 task_destroy(global_listener_queue_task); global_listener_queue_task = NULL;
2482 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002483 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002484
William Lallemand0f99e342011-10-12 17:50:54 +02002485 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2486 LIST_DEL(&log->list);
2487 free(log);
2488 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002489 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002490 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002491 LIST_DEL(&wl->list);
2492 free(wl);
2493 }
2494
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002495 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2496 if (bol->must_free)
2497 free((void *)bol->str);
2498 LIST_DEL(&bol->list);
2499 free(bol);
2500 }
2501
Christopher Fauletff2613e2016-11-09 11:36:17 +01002502 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002503 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002504 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002505} /* end deinit() */
2506
William Lallemand72160322018-11-06 17:37:16 +01002507
Willy Tarreau918ff602011-07-25 16:33:49 +02002508/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002509static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002510{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002511 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002512
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002513 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002514 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002515 /* Process a few tasks */
2516 process_runnable_tasks();
2517
William Lallemand1aab50b2018-06-07 09:46:01 +02002518 /* check if we caught some signals and process them in the
2519 first thread */
2520 if (tid == 0)
2521 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002522
Willy Tarreau58b458d2008-06-29 22:40:23 +02002523 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002524 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002525
Willy Tarreau85c459d2018-08-02 10:54:31 +02002526 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002527 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002528 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002529
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002530 /* also stop if we failed to cleanly stop all tasks */
2531 if (killed > 1)
2532 break;
2533
Willy Tarreau10146c92015-04-13 20:44:19 +02002534 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002535 wake = 1;
Christopher Faulet32467fe2018-01-15 12:16:34 +01002536 if (fd_cache_mask & tid_bit)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002537 activity[tid].wake_cache++;
Olivier Houchardcfbb3e62019-05-29 19:22:43 +02002538 else if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002539 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002540 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002541 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002542 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002543 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2544 __ha_barrier_atomic_store();
Olivier Houchardcfbb3e62019-05-29 19:22:43 +02002545 if (global_tasks_mask & tid_bit) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002546 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002547 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002548 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002549 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002550 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002551
Willy Tarreau58b458d2008-06-29 22:40:23 +02002552 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002553 cur_poller.poll(&cur_poller, next, wake);
Olivier Houchard79321b92018-07-26 17:55:11 +02002554 if (sleeping_thread_mask & tid_bit)
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002555 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002556 fd_process_cached_events();
Emeric Brun64cc49c2017-10-03 14:46:45 +02002557
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002558 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002559 }
2560}
2561
Christopher Faulet1d17c102017-08-29 15:38:48 +02002562static void *run_thread_poll_loop(void *data)
2563{
Willy Tarreau082b6282019-05-22 14:42:12 +02002564 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002565 struct per_thread_init_fct *ptif;
2566 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002567 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002568 static int init_left = 0;
2569 __decl_hathreads(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2570 __decl_hathreads(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002571
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002572 ha_set_tid((unsigned long)data);
Willy Tarreau91e6df02019-05-03 17:21:18 +02002573
Willy Tarreauf6178242019-05-21 19:46:58 +02002574#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002575#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002576 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002577#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002578 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002579#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002580#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002581 /* Now, initialize one thread init at a time. This is better since
2582 * some init code is a bit tricky and may release global resources
2583 * after reallocating them locally. This will also ensure there is
2584 * no race on file descriptors allocation.
2585 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002586#ifdef USE_THREAD
2587 pthread_mutex_lock(&init_mutex);
2588#endif
2589 /* The first thread must set the number of threads left */
2590 if (!init_left)
2591 init_left = global.nbthread;
2592 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002593
Christopher Faulet1d17c102017-08-29 15:38:48 +02002594 tv_update_date(-1,-1);
2595
Willy Tarreau082b6282019-05-22 14:42:12 +02002596 /* per-thread alloc calls performed here are not allowed to snoop on
2597 * other threads, so they are free to initialize at their own rhythm
2598 * as long as they act as if they were alone. None of them may rely
2599 * on resources initialized by the other ones.
2600 */
2601 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2602 if (!ptaf->fct()) {
2603 ha_alert("failed to allocate resources for thread %u.\n", tid);
2604 exit(1);
2605 }
2606 }
2607
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002608 /* per-thread init calls performed here are not allowed to snoop on
2609 * other threads, so they are free to initialize at their own rhythm
2610 * as long as they act as if they were alone.
2611 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002612 list_for_each_entry(ptif, &per_thread_init_list, list) {
2613 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002614 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002615 exit(1);
2616 }
2617 }
2618
Willy Tarreau71092822019-06-10 09:51:04 +02002619 /* enabling protocols will result in fd_insert() calls to be performed,
2620 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002621 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002622 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002623 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002624 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002625
Willy Tarreau34a150c2019-06-11 09:16:41 +02002626#ifdef USE_THREAD
2627 pthread_cond_broadcast(&init_cond);
2628 pthread_mutex_unlock(&init_mutex);
2629
2630 /* now wait for other threads to finish starting */
2631 pthread_mutex_lock(&init_mutex);
2632 while (init_left)
2633 pthread_cond_wait(&init_cond, &init_mutex);
2634 pthread_mutex_unlock(&init_mutex);
2635#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002636
Christopher Faulet1d17c102017-08-29 15:38:48 +02002637 run_poll_loop();
2638
2639 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2640 ptdf->fct();
2641
Willy Tarreau082b6282019-05-22 14:42:12 +02002642 list_for_each_entry(ptff, &per_thread_free_list, list)
2643 ptff->fct();
2644
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002645#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002646 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002647 if (tid > 0)
2648 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002649#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002650 return NULL;
2651}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002652
Willy Tarreaue9b26022011-08-01 20:57:55 +02002653/* This is the global management task for listeners. It enables listeners waiting
2654 * for global resources when there are enough free resource, or at least once in
2655 * a while. It is designed to be called as a task.
2656 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002657static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002658{
2659 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002660 /* queue is empty, nothing to do */
2661 if (LIST_ISEMPTY(&global_listener_queue))
2662 goto out;
2663
2664 /* If there are still too many concurrent connections, let's wait for
2665 * some of them to go away. We don't need to re-arm the timer because
2666 * each of them will scan the queue anyway.
2667 */
2668 if (unlikely(actconn >= global.maxconn))
2669 goto out;
2670
2671 /* We should periodically try to enable listeners waiting for a global
2672 * resource here, because it is possible, though very unlikely, that
2673 * they have been blocked by a temporary lack of global resource such
2674 * as a file descriptor or memory and that the temporary condition has
2675 * disappeared.
2676 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002677 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002678
2679 out:
2680 t->expire = next;
2681 task_queue(t);
2682 return t;
2683}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002684
Willy Tarreaubaaee002006-06-26 02:48:02 +02002685int main(int argc, char **argv)
2686{
2687 int err, retry;
2688 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002689 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002690 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002691
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002692 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002693
Willy Tarreauff9c9142019-02-07 10:39:36 +01002694 /* this can only safely be done here, though it's optimized away by
2695 * the compiler.
2696 */
2697 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2698 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2699 "HAProxy was built with value %d, please fix it and rebuild.\n",
2700 LONGBITS, MAX_PROCS);
2701 exit(1);
2702 }
2703
Willy Tarreaubf696402019-03-01 10:09:28 +01002704 /* take a copy of initial limits before we possibly change them */
2705 getrlimit(RLIMIT_NOFILE, &limit);
2706 rlim_fd_cur_at_boot = limit.rlim_cur;
2707 rlim_fd_max_at_boot = limit.rlim_max;
2708
Willy Tarreau5794fb02018-11-25 18:43:29 +01002709 /* process all initcalls in order of potential dependency */
2710 RUN_INITCALLS(STG_PREPARE);
2711 RUN_INITCALLS(STG_LOCK);
2712 RUN_INITCALLS(STG_ALLOC);
2713 RUN_INITCALLS(STG_POOL);
2714 RUN_INITCALLS(STG_REGISTER);
2715 RUN_INITCALLS(STG_INIT);
2716
Emeric Bruncf20bf12010-10-22 16:06:11 +02002717 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002718 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2719 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2720 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002721 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002722
Willy Tarreaue437c442010-03-17 18:02:46 +01002723 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2724 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2725 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002726 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002727 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002728
Willy Tarreaudc23a922011-02-16 11:10:36 +01002729 /* ulimits */
2730 if (!global.rlimit_nofile)
2731 global.rlimit_nofile = global.maxsock;
2732
2733 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002734 limit.rlim_cur = global.rlimit_nofile;
2735 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2736
Willy Tarreaudc23a922011-02-16 11:10:36 +01002737 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002738 /* try to set it to the max possible at least */
2739 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002740 limit.rlim_cur = limit.rlim_max;
2741 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2742 getrlimit(RLIMIT_NOFILE, &limit);
2743
Christopher Faulet767a84b2017-11-24 16:50:31 +01002744 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 +02002745 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002746 }
2747 }
2748
2749 if (global.rlimit_memmax) {
2750 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002751 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002752#ifdef RLIMIT_AS
2753 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002754 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2755 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002756 }
2757#else
2758 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002759 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2760 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002761 }
2762#endif
2763 }
2764
Olivier Houchardf73629d2017-04-05 22:33:04 +02002765 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002766 if (strcmp("/dev/null", old_unixsocket) != 0) {
2767 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002768 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002769 if (!(global.mode & MODE_MWORKER))
2770 exit(1);
2771 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002772 }
2773 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002774 get_cur_unixsocket();
2775
Willy Tarreaubaaee002006-06-26 02:48:02 +02002776 /* We will loop at most 100 times with 10 ms delay each time.
2777 * That's at most 1 second. We only send a signal to old pids
2778 * if we cannot grab at least one port.
2779 */
2780 retry = MAX_START_RETRIES;
2781 err = ERR_NONE;
2782 while (retry >= 0) {
2783 struct timeval w;
2784 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002785 /* exit the loop on no error or fatal error */
2786 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002787 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002788 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002789 break;
2790
2791 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2792 * listening sockets. So on those platforms, it would be wiser to
2793 * simply send SIGUSR1, which will not be undoable.
2794 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002795 if (tell_old_pids(SIGTTOU) == 0) {
2796 /* no need to wait if we can't contact old pids */
2797 retry = 0;
2798 continue;
2799 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002800 /* give some time to old processes to stop listening */
2801 w.tv_sec = 0;
2802 w.tv_usec = 10*1000;
2803 select(0, NULL, NULL, NULL, &w);
2804 retry--;
2805 }
2806
2807 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002808 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002809 if (retry != MAX_START_RETRIES && nb_oldpids) {
2810 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002811 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002812 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002813 exit(1);
2814 }
2815
William Lallemand944e6192018-11-21 15:48:31 +01002816 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002817 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002818 /* Note: we don't have to send anything to the old pids because we
2819 * never stopped them. */
2820 exit(1);
2821 }
2822
Emeric Bruncf20bf12010-10-22 16:06:11 +02002823 err = protocol_bind_all(errmsg, sizeof(errmsg));
2824 if ((err & ~ERR_WARN) != ERR_NONE) {
2825 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002826 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002827
Christopher Faulet767a84b2017-11-24 16:50:31 +01002828 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002829 protocol_unbind_all(); /* cleanup everything we can */
2830 if (nb_oldpids)
2831 tell_old_pids(SIGTTIN);
2832 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002833 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002834 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002835 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002836 /* Ok, all listener should now be bound, close any leftover sockets
2837 * the previous process gave us, we don't need them anymore
2838 */
2839 while (xfer_sock_list != NULL) {
2840 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2841 close(xfer_sock_list->fd);
2842 free(xfer_sock_list->iface);
2843 free(xfer_sock_list->namespace);
2844 free(xfer_sock_list);
2845 xfer_sock_list = tmpxfer;
2846 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002847
Willy Tarreaubaaee002006-06-26 02:48:02 +02002848 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002849 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2850 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002851
Willy Tarreaubaaee002006-06-26 02:48:02 +02002852 /* MODE_QUIET can inhibit alerts and warnings below this line */
2853
PiBa-NL149a81a2017-12-25 21:03:31 +01002854 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2855 /* either stdin/out/err are already closed or should stay as they are. */
2856 if ((global.mode & MODE_DAEMON)) {
2857 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2858 global.mode &= ~MODE_VERBOSE;
2859 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2860 }
2861 } else {
2862 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2863 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002864 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002865 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002866 }
2867
2868 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002869 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002870 unlink(global.pidfile);
2871 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2872 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002873 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002874 if (nb_oldpids)
2875 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002876 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002877 exit(1);
2878 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002879 }
2880
Willy Tarreaub38651a2007-03-24 17:24:39 +01002881 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002882 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2883 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002884 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002885 exit(1);
2886 }
2887
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002888 /* If the user is not root, we'll still let him try the configuration
2889 * but we inform him that unexpected behaviour may occur.
2890 */
2891 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002892 ha_warning("[%s.main()] Some options which require full privileges"
2893 " might not work well.\n"
2894 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002895
William Lallemand095ba4c2017-06-01 17:38:50 +02002896 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2897
2898 /* chroot if needed */
2899 if (global.chroot != NULL) {
2900 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002901 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002902 if (nb_oldpids)
2903 tell_old_pids(SIGTTIN);
2904 protocol_unbind_all();
2905 exit(1);
2906 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002907 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002908 }
2909
William Lallemand944e6192018-11-21 15:48:31 +01002910 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02002911 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002912
William Lallemand27edc4b2019-05-07 17:49:33 +02002913 /* send a SIGTERM to workers who have a too high reloads number */
2914 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
2915 mworker_kill_max_reloads(SIGTERM);
2916
William Lallemand8a361b52017-06-20 11:20:33 +02002917 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2918 nb_oldpids = 0;
2919 free(oldpids);
2920 oldpids = NULL;
2921 }
2922
2923
Willy Tarreaubaaee002006-06-26 02:48:02 +02002924 /* Note that any error at this stage will be fatal because we will not
2925 * be able to restart the old pids.
2926 */
2927
William Lallemand095ba4c2017-06-01 17:38:50 +02002928 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2929 /* setgid / setuid */
2930 if (global.gid) {
2931 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01002932 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2933 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002934
2935 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002936 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002937 protocol_unbind_all();
2938 exit(1);
2939 }
2940 }
Michael Schererab012dd2013-01-12 18:35:19 +01002941
William Lallemand095ba4c2017-06-01 17:38:50 +02002942 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002943 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002944 protocol_unbind_all();
2945 exit(1);
2946 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002947 }
Willy Tarreau636848a2019-04-15 19:38:50 +02002948
2949 /* try our best to re-enable core dumps depending on system capabilities.
2950 * What is addressed here :
2951 * - remove file size limits
2952 * - remove core size limits
2953 * - mark the process dumpable again if it lost it due to user/group
2954 */
2955 if (global.tune.options & GTUNE_SET_DUMPABLE) {
2956 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
2957
2958#if defined(RLIMIT_FSIZE)
2959 if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
2960 ha_warning("[%s.main()] Failed to set the raise the maximum file size.\n", argv[0]);
2961#endif
2962
2963#if defined(RLIMIT_CORE)
2964 if (setrlimit(RLIMIT_CORE, &limit) == -1)
2965 ha_warning("[%s.main()] Failed to set the raise the core dump size.\n", argv[0]);
2966#endif
2967
2968#if defined(USE_PRCTL)
2969 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
2970 ha_warning("[%s.main()] Failed to set the dumpable flag, no core will be dumped.\n", argv[0]);
2971#endif
2972 }
2973
Willy Tarreaubaaee002006-06-26 02:48:02 +02002974 /* check ulimits */
2975 limit.rlim_cur = limit.rlim_max = 0;
2976 getrlimit(RLIMIT_NOFILE, &limit);
2977 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002978 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",
2979 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002980 }
2981
William Lallemand944e6192018-11-21 15:48:31 +01002982 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002983 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002984 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002985 int ret = 0;
2986 int proc;
William Lallemande1340412017-12-28 16:09:36 +01002987 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002988
William Lallemand095ba4c2017-06-01 17:38:50 +02002989 /*
2990 * if daemon + mworker: must fork here to let a master
2991 * process live in background before forking children
2992 */
William Lallemand73b85e72017-06-01 17:38:51 +02002993
2994 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2995 && (global.mode & MODE_MWORKER)
2996 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002997 ret = fork();
2998 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002999 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003000 protocol_unbind_all();
3001 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003002 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003003 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003004 } else /* change the process group ID in the child (master process) */
3005 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003006 }
William Lallemande20b6a62017-06-01 17:38:55 +02003007
William Lallemande20b6a62017-06-01 17:38:55 +02003008
William Lallemanddeed7802017-11-06 11:00:04 +01003009 /* if in master-worker mode, write the PID of the father */
3010 if (global.mode & MODE_MWORKER) {
3011 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003012 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003013 if (pidfd >= 0)
3014 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003015 }
3016
Willy Tarreaubaaee002006-06-26 02:48:02 +02003017 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003018 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003019 if (global.mode & MODE_MWORKER)
3020 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003021 for (proc = 0; proc < global.nbproc; proc++) {
3022 ret = fork();
3023 if (ret < 0) {
3024 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3025 protocol_unbind_all();
3026 exit(1); /* there has been an error */
3027 }
3028 else if (ret == 0) /* child breaks here */
3029 break;
William Lallemand944e6192018-11-21 15:48:31 +01003030 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3031 char pidstr[100];
3032 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
3033 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
3034 }
3035 if (global.mode & MODE_MWORKER) {
3036 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003037
William Lallemand220567e2018-11-21 18:04:53 +01003038 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003039 /* find the right mworker_proc */
3040 list_for_each_entry(child, &proc_list, list) {
3041 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003042 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003043 child->timestamp = now.tv_sec;
3044 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003045 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003046 break;
3047 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003048 }
3049 }
William Lallemandbc193052018-09-11 10:06:26 +02003050
William Lallemand944e6192018-11-21 15:48:31 +01003051 relative_pid++; /* each child will get a different one */
3052 pid_bit <<= 1;
3053 }
3054 } else {
3055 /* wait mode */
3056 global.nbproc = 1;
3057 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003058 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003059
3060#ifdef USE_CPU_AFFINITY
3061 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003062 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003063 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003064#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003065 {
3066 cpuset_t cpuset;
3067 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003068 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003069
3070 CPU_ZERO(&cpuset);
3071 while ((i = ffsl(cpu_map)) > 0) {
3072 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003073 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003074 }
3075 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3076 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003077#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003078 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003079#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003080#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003081 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003082 if (pidfd >= 0) {
3083 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3084 close(pidfd);
3085 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003086
3087 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003088 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003089
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003090 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003091 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003092
3093 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3094 (global.mode & MODE_DAEMON)) {
3095 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003096 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3097 stdio_quiet(-1);
3098
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003099 global.mode &= ~MODE_VERBOSE;
3100 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003101 }
3102
William Lallemandb3f2be32018-09-11 10:06:18 +02003103 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003104 /* should never get there */
3105 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003106 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003107#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003108 ssl_free_dh();
3109#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003110 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003111 }
3112
William Lallemandcb11fd22017-06-01 17:38:52 +02003113 /* child must never use the atexit function */
3114 atexit_flag = 0;
3115
William Lallemandbc193052018-09-11 10:06:26 +02003116 /* close useless master sockets */
3117 if (global.mode & MODE_MWORKER) {
3118 struct mworker_proc *child, *it;
3119 master = 0;
3120
William Lallemand309dc9a2018-10-26 14:47:45 +02003121 mworker_cli_proxy_stop();
3122
William Lallemandbc193052018-09-11 10:06:26 +02003123 /* free proc struct of other processes */
3124 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003125 /* close the FD of the master side for all
3126 * workers, we don't need to close the worker
3127 * side of other workers since it's done with
3128 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003129 if (child->ipc_fd[0] >= 0)
3130 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003131 if (child->relative_pid == relative_pid &&
3132 child->reloads == 0) {
3133 /* keep this struct if this is our pid */
3134 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003135 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003136 }
William Lallemandbc193052018-09-11 10:06:26 +02003137 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003138 mworker_free_child(child);
3139 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003140 }
3141 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003142
William Lallemande1340412017-12-28 16:09:36 +01003143 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3144 devnullfd = open("/dev/null", O_RDWR, 0);
3145 if (devnullfd < 0) {
3146 ha_alert("Cannot open /dev/null\n");
3147 exit(EXIT_FAILURE);
3148 }
3149 }
3150
William Lallemand095ba4c2017-06-01 17:38:50 +02003151 /* Must chroot and setgid/setuid in the children */
3152 /* chroot if needed */
3153 if (global.chroot != NULL) {
3154 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003155 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003156 if (nb_oldpids)
3157 tell_old_pids(SIGTTIN);
3158 protocol_unbind_all();
3159 exit(1);
3160 }
3161 }
3162
3163 free(global.chroot);
3164 global.chroot = NULL;
3165
3166 /* setgid / setuid */
3167 if (global.gid) {
3168 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003169 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3170 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003171
3172 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003173 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003174 protocol_unbind_all();
3175 exit(1);
3176 }
3177 }
3178
3179 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003180 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003181 protocol_unbind_all();
3182 exit(1);
3183 }
3184
William Lallemand7f80eb22017-05-26 18:19:55 +02003185 /* pass through every cli socket, and check if it's bound to
3186 * the current process and if it exposes listeners sockets.
3187 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3188 * */
3189
3190 if (global.stats_fe) {
3191 struct bind_conf *bind_conf;
3192
3193 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3194 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3195 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3196 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3197 break;
3198 }
3199 }
3200 }
3201 }
3202
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003203 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003204 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003205 while (px != NULL) {
3206 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003207 if (!(px->bind_proc & (1UL << proc))) {
3208 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3209 zombify_proxy(px);
3210 else
3211 stop_proxy(px);
3212 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003213 }
3214 px = px->next;
3215 }
3216
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003217 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003218 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003219 if (!curpeers->peers_fe)
3220 continue;
3221
3222 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3223 continue;
3224
3225 stop_proxy(curpeers->peers_fe);
3226 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003227 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003228 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003229 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003230 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003231 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003232 curpeers->peers_fe = NULL;
3233 }
3234
William Lallemand2e8fad92018-11-13 16:18:23 +01003235 /*
3236 * This is only done in daemon mode because we might want the
3237 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3238 * we should now close the 3 first FDs to ensure that we can
3239 * detach from the TTY. We MUST NOT do it in other cases since
3240 * it would have already be done, and 0-2 would have been
3241 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003242 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003243 if ((global.mode & MODE_DAEMON) &&
3244 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003245 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003246 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003247 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003248 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3249 }
3250 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003251 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3252 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003253 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003254 }
3255
Christopher Faulete3a5e352017-10-24 13:53:54 +02003256 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003257 /*
3258 * That's it : the central polling loop. Run until we stop.
3259 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003260#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003261 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003262 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003263 int i;
3264
William Lallemand1aab50b2018-06-07 09:46:01 +02003265 /* ensure the signals will be blocked in every thread */
3266 sigfillset(&blocked_sig);
3267 sigdelset(&blocked_sig, SIGPROF);
3268 sigdelset(&blocked_sig, SIGBUS);
3269 sigdelset(&blocked_sig, SIGFPE);
3270 sigdelset(&blocked_sig, SIGILL);
3271 sigdelset(&blocked_sig, SIGSEGV);
3272 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3273
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003274 /* Create nbthread-1 thread. The first thread is the current process */
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003275 thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003276 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003277 pthread_create(&thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003278
Christopher Faulet62519022017-10-16 15:49:32 +02003279#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003280 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003281 if (global.cpu_map.proc_t1[relative_pid-1])
3282 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3283
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003284 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003285 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003286 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003287
Willy Tarreau421f02e2018-01-20 18:19:22 +01003288 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003289 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
Olivier Houchard829aa242017-12-01 18:19:43 +01003290#if defined(__FreeBSD__) || defined(__NetBSD__)
3291 cpuset_t cpuset;
3292#else
3293 cpu_set_t cpuset;
3294#endif
3295 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003296 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003297
3298 CPU_ZERO(&cpuset);
3299
3300 while ((j = ffsl(cpu_map)) > 0) {
3301 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003302 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003303 }
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003304 pthread_setaffinity_np(thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003305 sizeof(cpuset), &cpuset);
3306 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003307 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003308#endif /* !USE_CPU_AFFINITY */
3309
William Lallemand1aab50b2018-06-07 09:46:01 +02003310 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003311 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003312
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003313 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003314 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003315
3316 /* Wait the end of other threads */
3317 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003318 pthread_join(thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003319
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003320#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3321 show_lock_stats();
3322#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003323 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003324#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003325 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003326 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003327#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003328
3329 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003330 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003331
Willy Tarreaubaaee002006-06-26 02:48:02 +02003332 exit(0);
3333}
3334
3335
3336/*
3337 * Local variables:
3338 * c-indent-level: 8
3339 * c-basic-offset: 8
3340 * End:
3341 */