blob: c490cead8b02387e7de5d52021ccd77e89e0f4e9 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau6c1b6672019-02-26 16:43:49 +01003 * Copyright 2000-2019 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010062#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
Willy Tarreau636848a2019-04-15 19:38:50 +020064#if defined(USE_PRCTL)
65#include <sys/prctl.h>
66#endif
67
Willy Tarreaubaaee002006-06-26 02:48:02 +020068#ifdef DEBUG_FULL
69#include <assert.h>
70#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010071#if defined(USE_SYSTEMD)
72#include <systemd/sd-daemon.h>
73#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020074
Willy Tarreau2dd0d472006-06-29 17:53:05 +020075#include <common/base64.h>
76#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020077#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020078#include <common/compat.h>
79#include <common/config.h>
80#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010081#include <common/errors.h>
Willy Tarreau5794fb02018-11-25 18:43:29 +010082#include <common/initcall.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020083#include <common/memory.h>
84#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010085#include <common/namespace.h>
Willy Tarreauc125cef2019-05-10 09:58:43 +020086#include <common/openssl-compat.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020087#include <common/regex.h>
88#include <common/standard.h>
89#include <common/time.h>
90#include <common/uri_auth.h>
91#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020092#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020093
94#include <types/capture.h>
William Lallemandce83b4a2018-10-26 14:47:30 +020095#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020096#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020097#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090098#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020099#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200101#include <proto/acl.h>
Willy Tarreau609aad92018-11-22 08:31:09 +0100102#include <proto/activity.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +0200103#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +0200104#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200105#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200106#include <proto/channel.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200107#include <proto/cli.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200108#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200109#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200110#include <proto/filters.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100111#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +0200112#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200113#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200114#include <proto/log.h>
William Lallemand48dfbbd2019-04-01 11:29:53 +0200115#include <proto/mworker.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100116#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200117#include <proto/protocol.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +0200118#include <proto/http_ana.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200119#include <proto/proxy.h>
120#include <proto/queue.h>
121#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200122#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200123#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200124#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200125#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200126#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100127#include <proto/vars.h>
Grant Zhang872f9c22017-01-21 01:10:18 +0000128#include <proto/ssl_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200129
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100130/* array of init calls for older platforms */
131DECLARE_INIT_STAGES;
132
Willy Tarreau477ecd82010-01-03 21:12:30 +0100133/* list of config files */
134static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200135int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100136int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100137unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100138unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200139
Olivier Houchard79321b92018-07-26 17:55:11 +0200140volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200141/* global options */
142struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100143 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100144 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100145 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200146 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200147 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100148 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100149 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100150 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200151 .unix_bind = {
152 .ux = {
153 .uid = -1,
154 .gid = -1,
155 .mode = 0,
156 }
157 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200158 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100159 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100160 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreau27097842015-09-28 13:53:23 +0200161 .maxrewrite = -1,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100162 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100163 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200164 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200165 .pool_low_ratio = 20,
166 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200167 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200168#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100169 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200170#endif
William Lallemandf3747832012-11-09 12:33:10 +0100171 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100172#ifdef DEFAULT_IDLE_TIMER
173 .idle_timer = DEFAULT_IDLE_TIMER,
174#else
175 .idle_timer = 1000, /* 1 second */
176#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200177 },
Emeric Brun76d88952012-10-05 15:47:31 +0200178#ifdef USE_OPENSSL
179#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200180 .maxsslconn = DEFAULT_MAXSSLCONN,
181#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200182#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200183 /* others NULL OK */
184};
185
186/*********************************************************************/
187
188int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100189int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200190int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100191int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100192int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100193int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200194
195/* Here we store informations about the pids of the processes we may pause
196 * or kill. We will send them a signal every 10 ms until we can bind to all
197 * our ports. With 200 retries, that's about 2 seconds.
198 */
199#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200200static int *oldpids = NULL;
201static int oldpids_sig; /* use USR1 or TERM */
202
Olivier Houchardf73629d2017-04-05 22:33:04 +0200203/* Path to the unix socket we use to retrieve listener sockets from the old process */
204static const char *old_unixsocket;
205
William Lallemand85b0bd92017-06-01 17:38:53 +0200206static char *cur_unixsocket = NULL;
207
William Lallemandcb11fd22017-06-01 17:38:52 +0200208int atexit_flag = 0;
209
Willy Tarreaubb545b42010-08-25 12:58:59 +0200210int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200211const int zero = 0;
212const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200213const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200214
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100215char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200216char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200217
Willy Tarreau89efaed2013-12-13 15:14:55 +0100218/* used from everywhere just to drain results we don't want to read and which
219 * recent versions of gcc increasingly and annoyingly complain about.
220 */
221int shut_your_big_mouth_gcc_int = 0;
222
William Lallemand73b85e72017-06-01 17:38:51 +0200223static char **next_argv = NULL;
224
William Lallemandbc193052018-09-11 10:06:26 +0200225struct list proc_list = LIST_HEAD_INIT(proc_list);
226
227int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100228unsigned int rlim_fd_cur_at_boot = 0;
229unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200230
William Lallemand16dd1b32018-11-19 18:46:18 +0100231struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200232
Willy Tarreau08ceb102011-07-24 22:58:00 +0200233/* list of the temporarily limited listeners because of lack of resource */
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");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200698 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100699 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200700
Christopher Faulet767a84b2017-11-24 16:50:31 +0100701 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100702 return;
703
William Lallemand73b85e72017-06-01 17:38:51 +0200704alloc_error:
Joseph Herlant07a08342018-11-15 10:43:05 -0800705 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200706 return;
707}
708
William Lallemandb3f2be32018-09-11 10:06:18 +0200709static void mworker_loop()
710{
711
712#if defined(USE_SYSTEMD)
713 if (global.tune.options & GTUNE_USE_SYSTEMD)
714 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
715#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200716 /* Busy polling makes no sense in the master :-) */
717 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200718
William Lallemandbc193052018-09-11 10:06:26 +0200719 master = 1;
720
William Lallemand0564d412018-11-20 17:36:53 +0100721 signal_unregister(SIGUSR1);
722 signal_unregister(SIGHUP);
723 signal_unregister(SIGQUIT);
724
William Lallemandb3f2be32018-09-11 10:06:18 +0200725 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
726 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
727 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
728 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
729 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
730 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
731
732 mworker_unblock_signals();
733 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100734 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200735
William Lallemandbc193052018-09-11 10:06:26 +0200736 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
737 some SIGCHLD were lost */
738
William Lallemandb3f2be32018-09-11 10:06:18 +0200739 global.nbthread = 1;
740 relative_pid = 1;
741 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100742 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200743
William Lallemand2672eb92018-12-14 15:52:39 +0100744#ifdef USE_THREAD
745 tid_bit = 1;
746 all_threads_mask = 1;
747#endif
748
William Lallemandb3f2be32018-09-11 10:06:18 +0200749 jobs++; /* this is the "master" job, we want to take care of the
750 signals even if there is no listener so the poll loop don't
751 leave */
752
753 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200754 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200755}
William Lallemandcb11fd22017-06-01 17:38:52 +0200756
757/*
758 * Reexec the process in failure mode, instead of exiting
759 */
760void reexec_on_failure()
761{
762 if (!atexit_flag)
763 return;
764
765 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
766
Christopher Faulet767a84b2017-11-24 16:50:31 +0100767 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200768 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200769}
William Lallemand73b85e72017-06-01 17:38:51 +0200770
771
772/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200773 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
774 * a signal zero to all subscribers. This means that it's as easy as
775 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200776 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100777static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200778{
779 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200780 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100781 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200782}
783
784/*
785 * upon SIGTTOU, we pause everything
786 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100787static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200788{
789 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100790 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200791}
792
793/*
794 * upon SIGTTIN, let's have a soft stop.
795 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100796static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200797{
Willy Tarreaube58c382011-07-24 18:28:10 +0200798 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200799}
800
801/*
802 * this function dumps every server's state when the process receives SIGHUP.
803 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100804static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200805{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100806 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200807
Christopher Faulet767a84b2017-11-24 16:50:31 +0100808 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200809 while (p) {
810 struct server *s = p->srv;
811
812 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
813 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100814 chunk_printf(&trash,
815 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
816 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200817 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100818 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200819 ha_warning("%s\n", trash.area);
820 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200821 s = s->next;
822 }
823
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200824 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
825 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100826 chunk_printf(&trash,
827 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
828 p->id,
829 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 +0200830 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100831 chunk_printf(&trash,
832 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
833 p->id,
834 (p->srv_bck) ? "is running on backup servers" : "has no server available",
835 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 +0200836 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100837 chunk_printf(&trash,
838 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
839 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
840 p->id, p->srv_act, p->srv_bck,
841 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 +0200842 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200843 ha_warning("%s\n", trash.area);
844 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200845
846 p = p->next;
847 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200848}
849
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100850static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200851{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200852 /* dump memory usage then free everything possible */
853 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100854 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200855}
856
William Lallemande1340412017-12-28 16:09:36 +0100857/*
858 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
859 * If <fd> < 0, it opens /dev/null and use it to dup
860 *
861 * In the case of chrooting, you have to open /dev/null before the chroot, and
862 * pass the <fd> to this function
863 */
864static void stdio_quiet(int fd)
865{
866 if (fd < 0)
867 fd = open("/dev/null", O_RDWR, 0);
868
869 if (fd > -1) {
870 fclose(stdin);
871 fclose(stdout);
872 fclose(stderr);
873
874 dup2(fd, 0);
875 dup2(fd, 1);
876 dup2(fd, 2);
877 if (fd > 2)
878 close(fd);
879 return;
880 }
881
882 ha_alert("Cannot open /dev/null\n");
883 exit(EXIT_FAILURE);
884}
885
886
Joseph Herlant03420902018-11-15 10:41:50 -0800887/* This function checks if cfg_cfgfiles contains directories.
888 * If it finds one, it adds all the files (and only files) it contains
889 * in cfg_cfgfiles in place of the directory (and removes the directory).
890 * It adds the files in lexical order.
891 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200892 * It doesn't add files with name starting with '.'
893 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100894static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200895{
896 struct wordlist *wl, *wlb;
897 char *err = NULL;
898
899 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
900 struct stat file_stat;
901 struct dirent **dir_entries = NULL;
902 int dir_entries_nb;
903 int dir_entries_it;
904
905 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100906 ha_alert("Cannot open configuration file/directory %s : %s\n",
907 wl->s,
908 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200909 exit(1);
910 }
911
912 if (!S_ISDIR(file_stat.st_mode))
913 continue;
914
915 /* from this point wl->s is a directory */
916
917 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
918 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100919 ha_alert("Cannot open configuration directory %s : %s\n",
920 wl->s,
921 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200922 exit(1);
923 }
924
925 /* for each element in the directory wl->s */
926 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
927 struct dirent *dir_entry = dir_entries[dir_entries_it];
928 char *filename = NULL;
929 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
930
931 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -0800932 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200933 */
934 if (dir_entry->d_name[0] == '.' ||
935 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
936 goto next_dir_entry;
937
938 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100939 ha_alert("Cannot load configuration files %s : out of memory.\n",
940 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200941 exit(1);
942 }
943
944 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100945 ha_alert("Cannot open configuration file %s : %s\n",
946 wl->s,
947 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200948 exit(1);
949 }
950
951 /* don't add anything else than regular file in cfg_cfgfiles
952 * this way we avoid loops
953 */
954 if (!S_ISREG(file_stat.st_mode))
955 goto next_dir_entry;
956
957 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100958 ha_alert("Cannot load configuration files %s : %s\n",
959 filename,
960 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200961 exit(1);
962 }
963
964next_dir_entry:
965 free(filename);
966 free(dir_entry);
967 }
968
969 free(dir_entries);
970
971 /* remove the current directory (wl) from cfg_cfgfiles */
972 free(wl->s);
973 LIST_DEL(&wl->list);
974 free(wl);
975 }
976
977 free(err);
978}
979
Olivier Houchardf73629d2017-04-05 22:33:04 +0200980static int get_old_sockets(const char *unixsocket)
981{
982 char *cmsgbuf = NULL, *tmpbuf = NULL;
983 int *tmpfd = NULL;
984 struct sockaddr_un addr;
985 struct cmsghdr *cmsg;
986 struct msghdr msghdr;
987 struct iovec iov;
988 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +0200989 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +0200990 int sock = -1;
991 int ret = -1;
992 int ret2 = -1;
993 int fd_nb;
994 int got_fd = 0;
995 int i = 0;
996 size_t maxoff = 0, curoff = 0;
997
998 memset(&msghdr, 0, sizeof(msghdr));
999 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1000 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001001 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001002 goto out;
1003 }
1004 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1005 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001006 ha_warning("Failed to connect to the old process socket '%s'\n",
1007 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001008 goto out;
1009 }
1010 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1011 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1012 addr.sun_family = PF_UNIX;
1013 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1014 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001015 ha_warning("Failed to connect to the old process socket '%s'\n",
1016 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001017 goto out;
1018 }
Olivier Houchard54740872017-04-06 14:45:14 +02001019 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001020 iov.iov_base = &fd_nb;
1021 iov.iov_len = sizeof(fd_nb);
1022 msghdr.msg_iov = &iov;
1023 msghdr.msg_iovlen = 1;
1024 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1025 /* First, get the number of file descriptors to be received */
1026 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001027 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001028 goto out;
1029 }
1030 if (fd_nb == 0) {
1031 ret = 0;
1032 goto out;
1033 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001034 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001035 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001036 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001037 goto out;
1038 }
1039 tmpfd = malloc(fd_nb * sizeof(int));
1040 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001041 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001042 goto out;
1043 }
1044 msghdr.msg_control = cmsgbuf;
1045 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001046 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001047 do {
1048 int ret3;
1049
1050 iov.iov_base = tmpbuf + curoff;
1051 ret = recvmsg(sock, &msghdr, 0);
1052 if (ret == -1 && errno == EINTR)
1053 continue;
1054 if (ret <= 0)
1055 break;
1056 /* Send an ack to let the sender know we got the sockets
1057 * and it can send some more
1058 */
1059 do {
1060 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1061 } while (ret3 == -1 && errno == EINTR);
1062 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1063 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1064 if (cmsg->cmsg_level == SOL_SOCKET &&
1065 cmsg->cmsg_type == SCM_RIGHTS) {
1066 size_t totlen = cmsg->cmsg_len -
1067 CMSG_LEN(0);
1068 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001069 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001070 goto out;
1071 }
1072 /*
1073 * Be paranoid and use memcpy() to avoid any
1074 * potential alignement issue.
1075 */
1076 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1077 got_fd += totlen / sizeof(int);
1078 }
1079 }
1080 curoff += ret;
1081 } while (got_fd < fd_nb);
1082
1083 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001084 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1085 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001086 goto out;
1087 }
1088 maxoff = curoff;
1089 curoff = 0;
1090 for (i = 0; i < got_fd; i++) {
1091 int fd = tmpfd[i];
1092 socklen_t socklen;
1093 int len;
1094
1095 xfer_sock = calloc(1, sizeof(*xfer_sock));
1096 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001097 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001098 break;
1099 }
1100 xfer_sock->fd = -1;
1101
1102 socklen = sizeof(xfer_sock->addr);
1103 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001104 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001105 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001106 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001107 continue;
1108 }
1109 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001110 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001111 goto out;
1112 }
1113 len = tmpbuf[curoff++];
1114 if (len > 0) {
1115 /* We have a namespace */
1116 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001117 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001118 goto out;
1119 }
1120 xfer_sock->namespace = malloc(len + 1);
1121 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001122 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001123 goto out;
1124 }
1125 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1126 xfer_sock->namespace[len] = 0;
1127 curoff += len;
1128 }
1129 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001130 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001131 goto out;
1132 }
1133 len = tmpbuf[curoff++];
1134 if (len > 0) {
1135 /* We have an interface */
1136 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001137 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001138 goto out;
1139 }
1140 xfer_sock->iface = malloc(len + 1);
1141 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001142 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001143 goto out;
1144 }
1145 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001146 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001147 curoff += len;
1148 }
1149 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001150 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001151 goto out;
1152 }
1153 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1154 sizeof(xfer_sock->options));
1155 curoff += sizeof(xfer_sock->options);
1156
1157 xfer_sock->fd = fd;
1158 if (xfer_sock_list)
1159 xfer_sock_list->prev = xfer_sock;
1160 xfer_sock->next = xfer_sock_list;
1161 xfer_sock->prev = NULL;
1162 xfer_sock_list = xfer_sock;
1163 xfer_sock = NULL;
1164 }
1165
1166 ret2 = 0;
1167out:
1168 /* If we failed midway make sure to close the remaining
1169 * file descriptors
1170 */
1171 if (tmpfd != NULL && i < got_fd) {
1172 for (; i < got_fd; i++) {
1173 close(tmpfd[i]);
1174 }
1175 }
1176 free(tmpbuf);
1177 free(tmpfd);
1178 free(cmsgbuf);
1179 if (sock != -1)
1180 close(sock);
1181 if (xfer_sock) {
1182 free(xfer_sock->namespace);
1183 free(xfer_sock->iface);
1184 if (xfer_sock->fd != -1)
1185 close(xfer_sock->fd);
1186 free(xfer_sock);
1187 }
1188 return (ret2);
1189}
1190
Willy Tarreaubaaee002006-06-26 02:48:02 +02001191/*
William Lallemand73b85e72017-06-01 17:38:51 +02001192 * copy and cleanup the current argv
1193 * Remove the -sf /-st parameters
1194 * Return an allocated copy of argv
1195 */
1196
1197static char **copy_argv(int argc, char **argv)
1198{
1199 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001200 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001201
1202 newargv = calloc(argc + 2, sizeof(char *));
1203 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001204 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001205 return NULL;
1206 }
1207
William Lallemand2bf6d622017-06-20 11:20:23 +02001208 while (i < argc) {
1209 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001210 if (i > 0 && argv[i][0] == '-' &&
1211 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001212 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001213 i++;
1214 while (i < argc && argv[i][0] != '-') {
1215 i++;
1216 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001217 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001218 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001219
1220 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001221 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001222
William Lallemand73b85e72017-06-01 17:38:51 +02001223 return newargv;
1224}
1225
Willy Tarreau5a023f02019-03-01 14:19:31 +01001226/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1227 * setting, and returns it. It may return -1 meaning "unlimited" if some
1228 * unlimited proxies have been found and the global.maxconn value is not yet
1229 * set. It may also return a value greater than maxconn if it's not yet set.
1230 * Note that a value of zero means there is no need for pipes. -1 is never
1231 * returned if global.maxconn is valid.
1232 */
1233static int compute_ideal_maxpipes()
1234{
1235 struct proxy *cur;
1236 int nbfe = 0, nbbe = 0;
1237 int unlimited = 0;
1238 int pipes;
1239 int max;
1240
1241 for (cur = proxies_list; cur; cur = cur->next) {
1242 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1243 if (cur->cap & PR_CAP_FE) {
1244 max = cur->maxconn;
1245 nbfe += max;
1246 if (!max) {
1247 unlimited = 1;
1248 break;
1249 }
1250 }
1251 if (cur->cap & PR_CAP_BE) {
1252 max = cur->fullconn ? cur->fullconn : global.maxconn;
1253 nbbe += max;
1254 if (!max) {
1255 unlimited = 1;
1256 break;
1257 }
1258 }
1259 }
1260 }
1261
1262 pipes = MAX(nbfe, nbbe);
1263 if (global.maxconn) {
1264 if (pipes > global.maxconn || unlimited)
1265 pipes = global.maxconn;
1266 } else if (unlimited) {
1267 pipes = -1;
1268 }
1269
1270 return pipes >= 4 ? pipes / 4 : pipes;
1271}
1272
Willy Tarreauac350932019-03-01 15:43:14 +01001273/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1274 * rlimits and computes an ideal maxconn. It's meant to be called only when
1275 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001276 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1277 * default 100) is returned as it is expected that it will even run on tight
1278 * environments, and will maintain compatibility with previous packages that
1279 * used to rely on this value as the default one. The system will emit a
1280 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001281 */
1282static int compute_ideal_maxconn()
1283{
1284 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1285 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1286 int pipes = compute_ideal_maxpipes();
1287 int remain = rlim_fd_cur_at_boot;
1288 int maxconn;
1289
1290 /* we have to take into account these elements :
1291 * - number of engine_fds, which inflates the number of FD needed per
1292 * connection by this number.
1293 * - number of pipes per connection on average : for the unlimited
1294 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1295 * fixed value of 2*pipes.
1296 * - two FDs per connection
1297 */
1298
1299 /* subtract listeners and checks */
1300 remain -= global.maxsock;
1301
Willy Tarreau3f200852019-03-14 19:13:17 +01001302 /* one epoll_fd/kqueue_fd per thread */
1303 remain -= global.nbthread;
1304
1305 /* one wake-up pipe (2 fd) per thread */
1306 remain -= 2 * global.nbthread;
1307
Willy Tarreauac350932019-03-01 15:43:14 +01001308 /* Fixed pipes values : we only subtract them if they're not larger
1309 * than the remaining FDs because pipes are optional.
1310 */
1311 if (pipes >= 0 && pipes * 2 < remain)
1312 remain -= pipes * 2;
1313
1314 if (pipes < 0) {
1315 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1316 * = maxconn * (2 + 0.5 + engine_fds)
1317 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1318 */
1319 maxconn = 2 * remain / (5 + 2 * engine_fds);
1320 } else {
1321 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1322 * = maxconn * (2 + engine_fds)
1323 */
1324 maxconn = remain / (2 + engine_fds);
1325 }
1326
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001327 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001328}
1329
William Lallemand73b85e72017-06-01 17:38:51 +02001330/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001331 * This function initializes all the necessary variables. It only returns
1332 * if everything is OK. If something fails, it exits.
1333 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001334static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001335{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001336 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001337 char *tmp;
1338 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001339 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001340 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001341 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001342 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001343 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001344 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001345 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001346 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001347
Christopher Faulete3a5e352017-10-24 13:53:54 +02001348 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001349 next_argv = copy_argv(argc, argv);
1350
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001351 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001352 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001353 exit(1);
1354 }
David du Colombier7af46052012-05-16 14:16:48 +02001355
Emeric Brun2b920a12010-09-23 18:30:22 +02001356 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1357 * the string in case of truncation, and at least FreeBSD appears not to do
1358 * it.
1359 */
1360 memset(hostname, 0, sizeof(hostname));
1361 gethostname(hostname, sizeof(hostname) - 1);
1362 memset(localpeer, 0, sizeof(localpeer));
1363 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001364 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001365
Willy Tarreaubaaee002006-06-26 02:48:02 +02001366 /*
1367 * Initialize the previously static variables.
1368 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001369
Willy Tarreau173d9952018-01-26 21:48:23 +01001370 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001371 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001372
Willy Tarreaubaaee002006-06-26 02:48:02 +02001373
1374#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001375 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001376#endif
1377
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001378 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001379 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001380 start_date = now;
1381
Willy Tarreau84310e22014-02-14 11:59:04 +01001382 srandom(now_ms - getpid());
1383
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001384 if (init_acl() != 0)
1385 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001386
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001387 /* Initialise lua. */
1388 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001389
Christopher Fauletff2613e2016-11-09 11:36:17 +01001390 /* Initialize process vars */
1391 vars_init(&global.vars, SCOPE_PROC);
1392
Willy Tarreau43b78992009-01-25 15:42:27 +01001393 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001394#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001395 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001396#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001397#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001398 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001399#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001400#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001401 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001402#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001403#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001404 global.tune.options |= GTUNE_USE_EVPORTS;
1405#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001406#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001407 global.tune.options |= GTUNE_USE_SPLICE;
1408#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001409#if defined(USE_GETADDRINFO)
1410 global.tune.options |= GTUNE_USE_GAI;
1411#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001412#if defined(SO_REUSEPORT)
1413 global.tune.options |= GTUNE_USE_REUSEPORT;
1414#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001415
1416 pid = getpid();
1417 progname = *argv;
1418 while ((tmp = strchr(progname, '/')) != NULL)
1419 progname = tmp + 1;
1420
Kevinm48936af2010-12-22 16:08:21 +00001421 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001422 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001423
Willy Tarreaubaaee002006-06-26 02:48:02 +02001424 argc--; argv++;
1425 while (argc > 0) {
1426 char *flag;
1427
1428 if (**argv == '-') {
1429 flag = *argv+1;
1430
1431 /* 1 arg */
1432 if (*flag == 'v') {
1433 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001434 if (flag[1] == 'v') /* -vv */
1435 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001436 exit(0);
1437 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001438#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001439 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001440 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001441#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001442#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001443 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001444 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001446#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001447 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001448 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001449#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001450#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001451 else if (*flag == 'd' && flag[1] == 'v')
1452 global.tune.options &= ~GTUNE_USE_EVPORTS;
1453#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001454#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001455 else if (*flag == 'd' && flag[1] == 'S')
1456 global.tune.options &= ~GTUNE_USE_SPLICE;
1457#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001458#if defined(USE_GETADDRINFO)
1459 else if (*flag == 'd' && flag[1] == 'G')
1460 global.tune.options &= ~GTUNE_USE_GAI;
1461#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001462#if defined(SO_REUSEPORT)
1463 else if (*flag == 'd' && flag[1] == 'R')
1464 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1465#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001466 else if (*flag == 'd' && flag[1] == 'V')
1467 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001468 else if (*flag == 'V')
1469 arg_mode |= MODE_VERBOSE;
1470 else if (*flag == 'd' && flag[1] == 'b')
1471 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001472 else if (*flag == 'd' && flag[1] == 'M')
1473 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001474 else if (*flag == 'd' && flag[1] == 'r')
1475 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001476 else if (*flag == 'd')
1477 arg_mode |= MODE_DEBUG;
1478 else if (*flag == 'c')
1479 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001480 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001481 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001482 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001483 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001484#if defined(USE_SYSTEMD)
1485 global.tune.options |= GTUNE_USE_SYSTEMD;
1486#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001487 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 +01001488 usage(progname);
1489#endif
1490 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001491 else if (*flag == 'W')
1492 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001493 else if (*flag == 'q')
1494 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001495 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001496 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001497 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001498 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001499 }
William Lallemand4fc09692017-06-19 16:37:19 +02001500 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001501 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001502 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001503
Olivier Houchardf73629d2017-04-05 22:33:04 +02001504 argv++;
1505 argc--;
1506 }
William Lallemande7361152018-10-26 14:47:36 +02001507 else if (*flag == 'S') {
1508 struct wordlist *c;
1509
1510 if (argc <= 1 || argv[1][0] == '-') {
1511 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1512 usage(progname);
1513 }
1514 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1515 ha_alert("Cannot allocate memory\n");
1516 exit(EXIT_FAILURE);
1517 }
1518 LIST_ADD(&mworker_cli_conf, &c->list);
1519
1520 argv++;
1521 argc--;
1522 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001523 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1524 /* list of pids to finish ('f') or terminate ('t') */
1525
1526 if (flag[1] == 'f')
1527 oldpids_sig = SIGUSR1; /* finish then exit */
1528 else
1529 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001530 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001531 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001532 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1533 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001534 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001535 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001536 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001537 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001538 errno = 0;
1539 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1540 if (errno) {
1541 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1542 flag,
1543 *argv, strerror(errno));
1544 exit(1);
1545 } else if (endptr && strlen(endptr)) {
1546 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001547 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001548 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1549 flag, endptr);
1550 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001551 }
Chris Lane236062f2018-02-05 23:15:44 +00001552 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001553 if (oldpids[nb_oldpids] <= 0)
1554 usage(progname);
1555 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001556 }
1557 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001558 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1559 /* now that's a cfgfile list */
1560 argv++; argc--;
1561 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001562 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001563 ha_alert("Cannot load configuration file/directory %s : %s\n",
1564 *argv,
1565 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001566 exit(1);
1567 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001568 argv++; argc--;
1569 }
1570 break;
1571 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001572 else { /* >=2 args */
1573 argv++; argc--;
1574 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001575 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001576
1577 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001578 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001579 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001580 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001582 case 'L' :
1583 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1584 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1585 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001586 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001587 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001588 ha_alert("Cannot load configuration file/directory %s : %s\n",
1589 *argv,
1590 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001591 exit(1);
1592 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001593 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001594 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001595 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001596 }
1597 }
1598 }
1599 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001600 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001601 argv++; argc--;
1602 }
1603
Christopher Faulete3a5e352017-10-24 13:53:54 +02001604 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1605 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001606
William Lallemand944e6192018-11-21 15:48:31 +01001607 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001608 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001609 global.mode |= MODE_MWORKER_WAIT;
1610 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001611 }
1612
1613 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1614 atexit_flag = 1;
1615 atexit(reexec_on_failure);
1616 }
1617
Willy Tarreau576132e2011-09-10 19:26:56 +02001618 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001619 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001620 exit(1);
1621 }
1622
Willy Tarreaubaaee002006-06-26 02:48:02 +02001623 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001624
1625 init_default_instance();
1626
William Lallemand944e6192018-11-21 15:48:31 +01001627 /* in wait mode, we don't try to read the configuration files */
1628 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001629 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001630
William Lallemand944e6192018-11-21 15:48:31 +01001631 /* handle cfgfiles that are actually directories */
1632 cfgfiles_expand_directories();
1633
1634 if (LIST_ISEMPTY(&cfg_cfgfiles))
1635 usage(progname);
1636
1637
1638 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1639 int ret;
1640
William Lallemand7b302d82019-05-20 11:15:37 +02001641 if (trash->data)
1642 chunk_appendf(trash, ";");
1643
1644 chunk_appendf(trash, "%s", wl->s);
1645
William Lallemand944e6192018-11-21 15:48:31 +01001646 ret = readcfgfile(wl->s);
1647 if (ret == -1) {
1648 ha_alert("Could not open configuration file %s : %s\n",
1649 wl->s, strerror(errno));
1650 exit(1);
1651 }
1652 if (ret & (ERR_ABORT|ERR_FATAL))
1653 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1654 err_code |= ret;
1655 if (err_code & ERR_ABORT)
1656 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001657 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001658
William Lallemand944e6192018-11-21 15:48:31 +01001659 /* do not try to resolve arguments nor to spot inconsistencies when
1660 * the configuration contains fatal errors caused by files not found
1661 * or failed memory allocations.
1662 */
1663 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1664 ha_alert("Fatal errors found in configuration.\n");
1665 exit(1);
1666 }
William Lallemand7b302d82019-05-20 11:15:37 +02001667 if (trash->data)
1668 setenv("HAPROXY_CFGFILES", trash->area, 1);
1669
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001670 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001671 if (global.mode & MODE_MWORKER) {
1672 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001673 struct mworker_proc *tmproc;
1674
William Lallemand482f9a92019-04-12 16:15:00 +02001675 setenv("HAPROXY_MWORKER", "1", 1);
1676
William Lallemand16dd1b32018-11-19 18:46:18 +01001677 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1678
William Lallemandf3a86832019-04-01 11:29:58 +02001679 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001680 if (!tmproc) {
1681 ha_alert("Cannot allocate process structures.\n");
1682 exit(EXIT_FAILURE);
1683 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001684 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001685 tmproc->reloads = 0;
1686 tmproc->relative_pid = 0;
1687 tmproc->pid = pid;
1688 tmproc->timestamp = start_date.tv_sec;
1689 tmproc->ipc_fd[0] = -1;
1690 tmproc->ipc_fd[1] = -1;
1691
1692 proc_self = tmproc;
1693
1694 LIST_ADDQ(&proc_list, &tmproc->list);
1695 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001696
1697 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001698
William Lallemandf3a86832019-04-01 11:29:58 +02001699 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001700 if (!tmproc) {
1701 ha_alert("Cannot allocate process structures.\n");
1702 exit(EXIT_FAILURE);
1703 }
1704
William Lallemand8f7069a2019-04-12 16:09:23 +02001705 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001706 tmproc->pid = -1;
1707 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001708 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001709 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001710 tmproc->ipc_fd[0] = -1;
1711 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001712
1713 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1714 exit(EXIT_FAILURE);
1715 }
1716
1717 LIST_ADDQ(&proc_list, &tmproc->list);
1718 }
William Lallemand944e6192018-11-21 15:48:31 +01001719 }
1720 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1721 struct wordlist *it, *c;
1722
William Lallemand1b663612018-10-26 14:47:33 +02001723 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001724
William Lallemande7361152018-10-26 14:47:36 +02001725
William Lallemand550db6d2018-11-06 17:37:12 +01001726 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001727
William Lallemand550db6d2018-11-06 17:37:12 +01001728 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001729 ha_alert("Can't create the master's CLI.\n");
1730 exit(EXIT_FAILURE);
1731 }
William Lallemande7361152018-10-26 14:47:36 +02001732
William Lallemand550db6d2018-11-06 17:37:12 +01001733 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1734
1735 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1736 ha_alert("Can't create the master's CLI.\n");
1737 exit(EXIT_FAILURE);
1738 }
1739 LIST_DEL(&c->list);
1740 free(c->s);
1741 free(c);
1742 }
1743 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001744 }
1745
Willy Tarreaubb925012009-07-23 13:36:36 +02001746 err_code |= check_config_validity();
1747 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001748 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001749 exit(1);
1750 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001751
Willy Tarreau0f936722019-04-11 14:47:08 +02001752 pattern_finalize_config();
1753
Willy Tarreau70060452015-12-14 12:46:07 +01001754 /* recompute the amount of per-process memory depending on nbproc and
1755 * the shared SSL cache size (allowed to exist in all processes).
1756 */
1757 if (global.rlimit_memmax_all) {
1758#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1759 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1760
1761 global.rlimit_memmax =
1762 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1763 ssl_cache_bytes) / global.nbproc +
1764 ssl_cache_bytes + 1048575LL) / 1048576LL;
1765#else
1766 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1767#endif
1768 }
1769
Willy Tarreaue5733232019-05-22 19:24:06 +02001770#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001771 err_code |= netns_init();
1772 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001773 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001774 exit(1);
1775 }
1776#endif
1777
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001778 /* Apply server states */
1779 apply_server_state();
1780
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001781 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001782 srv_compute_all_admin_states(px);
1783
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001784 /* Apply servers' configured address */
1785 err_code |= srv_init_addr();
1786 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001787 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001788 exit(1);
1789 }
1790
Willy Tarreaubaaee002006-06-26 02:48:02 +02001791 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001792 struct peers *pr;
1793 struct proxy *px;
1794
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001795 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001796 if (pr->peers_fe)
1797 break;
1798
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001799 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001800 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001801 break;
1802
1803 if (pr || px) {
1804 /* At least one peer or one listener has been found */
1805 qfprintf(stdout, "Configuration file is valid\n");
1806 exit(0);
1807 }
1808 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1809 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001810 }
1811
Emeric Brunc60def82017-09-27 14:59:38 +02001812 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001813 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001814 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001815 exit(1);
1816 }
1817 /* very simple initialization, users will queue the task if needed */
1818 global_listener_queue_task->context = NULL; /* not even a context! */
1819 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001820
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001821 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001822 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001823
Willy Tarreaue6945732016-12-21 19:57:00 +01001824 list_for_each_entry(pcf, &post_check_list, list) {
1825 err_code |= pcf->fct();
1826 if (err_code & (ERR_ABORT|ERR_FATAL))
1827 exit(1);
1828 }
1829
Willy Tarreaubaaee002006-06-26 02:48:02 +02001830 if (cfg_maxconn > 0)
1831 global.maxconn = cfg_maxconn;
1832
Willy Tarreau8d687d82019-03-01 09:39:42 +01001833 if (global.stats_fe)
1834 global.maxsock += global.stats_fe->maxconn;
1835
1836 if (cfg_peers) {
1837 /* peers also need to bypass global maxconn */
1838 struct peers *p = cfg_peers;
1839
1840 for (p = cfg_peers; p; p = p->next)
1841 if (p->peers_fe)
1842 global.maxsock += p->peers_fe->maxconn;
1843 }
1844
Willy Tarreaubaaee002006-06-26 02:48:02 +02001845 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001846 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001847 global.pidfile = strdup(cfg_pidfile);
1848 }
1849
Willy Tarreaud0256482015-01-15 21:45:22 +01001850 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001851 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1852 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1853 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
1854 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01001855 *
1856 * If memmax is set, then it depends on which values are set. If
1857 * maxsslconn is set, we use memmax to determine how many cleartext
1858 * connections may be added, and set maxconn to the sum of the two.
1859 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1860 * the remaining amount of memory between memmax and the cleartext
1861 * connections. If neither are set, then it is considered that all
1862 * connections are SSL-capable, and maxconn is computed based on this,
1863 * then maxsslconn accordingly. We need to know if SSL is used on the
1864 * frontends, backends, or both, because when it's used on both sides,
1865 * we need twice the value for maxsslconn, but we only count the
1866 * handshake once since it is not performed on the two sides at the
1867 * same time (frontend-side is terminated before backend-side begins).
1868 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001869 * ssl_handshake_cost during its initialization. In any case, if
1870 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1871 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001872 */
Willy Tarreauac350932019-03-01 15:43:14 +01001873 ideal_maxconn = compute_ideal_maxconn();
1874
Willy Tarreaud0256482015-01-15 21:45:22 +01001875 if (!global.rlimit_memmax) {
1876 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01001877 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01001878 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1879 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1880 }
1881 }
1882#ifdef USE_OPENSSL
1883 else if (!global.maxconn && !global.maxsslconn &&
1884 (global.ssl_used_frontend || global.ssl_used_backend)) {
1885 /* memmax is set, compute everything automatically. Here we want
1886 * to ensure that all SSL connections will be served. We take
1887 * care of the number of sides where SSL is used, and consider
1888 * the worst case : SSL used on both sides and doing a handshake
1889 * simultaneously. Note that we can't have more than maxconn
1890 * handshakes at a time by definition, so for the worst case of
1891 * two SSL conns per connection, we count a single handshake.
1892 */
1893 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1894 int64_t mem = global.rlimit_memmax * 1048576ULL;
1895
1896 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1897 mem -= global.maxzlibmem;
1898 mem = mem * MEM_USABLE_RATIO;
1899
1900 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001901 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001902 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1903 global.ssl_handshake_max_cost); // 1 handshake per connection max
1904
Willy Tarreauac350932019-03-01 15:43:14 +01001905 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001906 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001907#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01001908 if (global.maxconn > SYSTEM_MAXCONN)
1909 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001910#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001911 global.maxsslconn = sides * global.maxconn;
1912 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1913 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1914 global.maxconn, global.maxsslconn);
1915 }
1916 else if (!global.maxsslconn &&
1917 (global.ssl_used_frontend || global.ssl_used_backend)) {
1918 /* memmax and maxconn are known, compute maxsslconn automatically.
1919 * maxsslconn being forced, we don't know how many of it will be
1920 * on each side if both sides are being used. The worst case is
1921 * when all connections use only one SSL instance because
1922 * handshakes may be on two sides at the same time.
1923 */
1924 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1925 int64_t mem = global.rlimit_memmax * 1048576ULL;
1926 int64_t sslmem;
1927
1928 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1929 mem -= global.maxzlibmem;
1930 mem = mem * MEM_USABLE_RATIO;
1931
Willy Tarreau87b09662015-04-03 00:22:06 +02001932 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001933 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1934 global.maxsslconn = round_2dig(global.maxsslconn);
1935
1936 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001937 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1938 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1939 "without SSL is %d, but %d was found and SSL is in use.\n",
1940 global.rlimit_memmax,
1941 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
1942 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001943 exit(1);
1944 }
1945
1946 if (global.maxsslconn > sides * global.maxconn)
1947 global.maxsslconn = sides * global.maxconn;
1948
1949 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1950 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1951 }
1952#endif
1953 else if (!global.maxconn) {
1954 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1955 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1956 int64_t mem = global.rlimit_memmax * 1048576ULL;
1957 int64_t clearmem;
1958
1959 if (global.ssl_used_frontend || global.ssl_used_backend)
1960 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1961
1962 mem -= global.maxzlibmem;
1963 mem = mem * MEM_USABLE_RATIO;
1964
1965 clearmem = mem;
1966 if (sides)
1967 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1968
Willy Tarreau87b09662015-04-03 00:22:06 +02001969 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01001970 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001971 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001972#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01001973 if (global.maxconn > SYSTEM_MAXCONN)
1974 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01001975#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001976
1977 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001978 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1979 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1980 "is %d, but %d was found.\n",
1981 global.rlimit_memmax,
1982 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1983 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001984 exit(1);
1985 }
1986
1987 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1988 if (sides && global.maxsslconn > sides * global.maxconn) {
1989 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
1990 "to be limited to %d. Better reduce global.maxsslconn to get more "
1991 "room for extra connections.\n", global.maxsslconn, global.maxconn);
1992 }
1993 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
1994 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001995 }
1996
Willy Tarreau5a023f02019-03-01 14:19:31 +01001997 if (!global.maxpipes)
1998 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001999
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002000 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002001 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002002 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002003 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2004 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2005
Emeric Brunece0c332017-12-06 13:51:49 +01002006 /* compute fd used by async engines */
2007 if (global.ssl_used_async_engines) {
2008 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2009 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2010 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002011
Olivier Houchard88698d92019-04-16 19:07:22 +02002012 /* update connection pool thresholds */
2013 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2014 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2015
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002016 proxy_adjust_all_maxconn();
2017
Willy Tarreau1db37712007-06-03 17:16:49 +02002018 if (global.tune.maxpollevents <= 0)
2019 global.tune.maxpollevents = MAX_POLL_EVENTS;
2020
Olivier Houchard1599b802018-05-24 18:59:04 +02002021 if (global.tune.runqueue_depth <= 0)
2022 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2023
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002024 if (global.tune.recv_enough == 0)
2025 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2026
Willy Tarreau27097842015-09-28 13:53:23 +02002027 if (global.tune.maxrewrite < 0)
2028 global.tune.maxrewrite = MAXREWRITE;
2029
Willy Tarreau27a674e2009-08-17 07:23:33 +02002030 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2031 global.tune.maxrewrite = global.tune.bufsize / 2;
2032
Willy Tarreaubaaee002006-06-26 02:48:02 +02002033 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2034 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002035 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002036 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2037 }
2038
William Lallemand095ba4c2017-06-01 17:38:50 +02002039 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002040 /* command line daemon mode inhibits foreground and debug modes mode */
2041 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002042 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002043 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002044
2045 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002046
William Lallemand095ba4c2017-06-01 17:38:50 +02002047 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002048 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002049 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002050 }
2051
William Lallemand095ba4c2017-06-01 17:38:50 +02002052 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002053 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002054 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 +02002055 global.nbproc = 1;
2056 }
2057
2058 if (global.nbproc < 1)
2059 global.nbproc = 1;
2060
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002061 if (global.nbthread < 1)
2062 global.nbthread = 1;
2063
Christopher Faulet3ef26392017-08-29 16:46:57 +02002064 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002065 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002066 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002067 exit(1);
2068 }
2069
Christopher Faulet96d44832017-11-14 22:02:30 +01002070 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002071 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002072 exit(1);
2073 }
2074
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002075 /*
2076 * Note: we could register external pollers here.
2077 * Built-in pollers have been registered before main().
2078 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002079
Willy Tarreau43b78992009-01-25 15:42:27 +01002080 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002081 disable_poller("kqueue");
2082
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002083 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2084 disable_poller("evports");
2085
Willy Tarreau43b78992009-01-25 15:42:27 +01002086 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002087 disable_poller("epoll");
2088
Willy Tarreau43b78992009-01-25 15:42:27 +01002089 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002090 disable_poller("poll");
2091
Willy Tarreau43b78992009-01-25 15:42:27 +01002092 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002093 disable_poller("select");
2094
2095 /* Note: we could disable any poller by name here */
2096
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002097 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002098 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002099 fprintf(stderr, "\n");
2100 list_filters(stderr);
2101 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002102
Willy Tarreau4f60f162007-04-08 16:39:58 +02002103 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002104 ha_alert("No polling mechanism available.\n"
2105 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2106 " is too low on this platform to support maxconn and the number of listeners\n"
2107 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2108 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2109 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2110 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2111 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2112 " check build settings using 'haproxy -vv'.\n\n",
2113 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002114 exit(1);
2115 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002116 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2117 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002118 }
2119
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002120 if (!global.node)
2121 global.node = strdup(hostname);
2122
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002123 if (!hlua_post_init())
2124 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002125
Maxime de Roucy0f503922016-05-13 23:52:55 +02002126 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002127}
2128
Simon Horman6fb82592011-07-15 13:14:11 +09002129static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002130{
Simon Hormanac821422011-07-15 13:14:09 +09002131 struct acl_term_suite *suite, *suiteb;
2132 struct acl_term *term, *termb;
2133
Simon Horman6fb82592011-07-15 13:14:11 +09002134 if (!cond)
2135 return;
2136
2137 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2138 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2139 LIST_DEL(&term->list);
2140 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002141 }
Simon Horman6fb82592011-07-15 13:14:11 +09002142 LIST_DEL(&suite->list);
2143 free(suite);
2144 }
2145
2146 free(cond);
2147}
2148
2149static void deinit_tcp_rules(struct list *rules)
2150{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002151 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002152
2153 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002154 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002155 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002156 free(trule);
2157 }
2158}
2159
Simon Horman6fb82592011-07-15 13:14:11 +09002160static void deinit_stick_rules(struct list *rules)
2161{
2162 struct sticking_rule *rule, *ruleb;
2163
2164 list_for_each_entry_safe(rule, ruleb, rules, list) {
2165 LIST_DEL(&rule->list);
2166 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002167 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002168 free(rule);
2169 }
2170}
2171
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002172void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002173{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002174 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002175 struct cap_hdr *h,*h_next;
2176 struct server *s,*s_next;
2177 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002178 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002179 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002180 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002181 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002182 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002183 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002184 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002185 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002186 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002187 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002188 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002189 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002190 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002191
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002192 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002193 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002194 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002195 free(p->id);
2196 free(p->check_req);
2197 free(p->cookie_name);
2198 free(p->cookie_domain);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002199 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002200 free(p->capture_name);
2201 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002202 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002203 if (p->conf.logformat_string != default_http_log_format &&
2204 p->conf.logformat_string != default_tcp_log_format &&
2205 p->conf.logformat_string != clf_http_log_format)
2206 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002207
Willy Tarreau62a61232013-04-12 18:13:46 +02002208 free(p->conf.lfs_file);
2209 free(p->conf.uniqueid_format_string);
2210 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002211 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2212 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002213
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002214 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2215 free(p->conf.logformat_sd_string);
2216 free(p->conf.lfsd_file);
2217
Willy Tarreaua534fea2008-08-03 12:19:50 +02002218 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002219 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002220
Willy Tarreaub80c2302007-11-30 20:51:32 +01002221 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2222 LIST_DEL(&cond->list);
2223 prune_acl_cond(cond);
2224 free(cond);
2225 }
2226
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002227 /* build a list of unique uri_auths */
2228 if (!ua)
2229 ua = p->uri_auth;
2230 else {
2231 /* check if p->uri_auth is unique */
2232 for (uap = ua; uap; uap=uap->next)
2233 if (uap == p->uri_auth)
2234 break;
2235
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002236 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002237 /* add it, if it is */
2238 p->uri_auth->next = ua;
2239 ua = p->uri_auth;
2240 }
2241 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002242
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002243 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2244 LIST_DEL(&acl->list);
2245 prune_acl(acl);
2246 free(acl);
2247 }
2248
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002249 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2250 LIST_DEL(&srule->list);
2251 prune_acl_cond(srule->cond);
2252 free(srule->cond);
2253 free(srule);
2254 }
2255
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002256 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2257 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002258 if (rule->cond) {
2259 prune_acl_cond(rule->cond);
2260 free(rule->cond);
2261 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002262 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002263 free(rule);
2264 }
2265
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002266 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2267 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002268 if (rdr->cond) {
2269 prune_acl_cond(rdr->cond);
2270 free(rdr->cond);
2271 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002272 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002273 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2274 LIST_DEL(&lf->list);
2275 free(lf);
2276 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002277 free(rdr);
2278 }
2279
William Lallemand0f99e342011-10-12 17:50:54 +02002280 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2281 LIST_DEL(&log->list);
2282 free(log);
2283 }
2284
William Lallemand723b73a2012-02-08 16:37:49 +01002285 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2286 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002287 release_sample_expr(lf->expr);
2288 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002289 free(lf);
2290 }
2291
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002292 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2293 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002294 release_sample_expr(lf->expr);
2295 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002296 free(lf);
2297 }
2298
Simon Hormanac821422011-07-15 13:14:09 +09002299 deinit_tcp_rules(&p->tcp_req.inspect_rules);
Kevin Zhu13ebef72019-01-30 16:01:21 +08002300 deinit_tcp_rules(&p->tcp_rep.inspect_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002301 deinit_tcp_rules(&p->tcp_req.l4_rules);
2302
Simon Horman6fb82592011-07-15 13:14:11 +09002303 deinit_stick_rules(&p->storersp_rules);
2304 deinit_stick_rules(&p->sticking_rules);
2305
Willy Tarreaubaaee002006-06-26 02:48:02 +02002306 h = p->req_cap;
2307 while (h) {
2308 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002309 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002310 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002311 free(h);
2312 h = h_next;
2313 }/* end while(h) */
2314
2315 h = p->rsp_cap;
2316 while (h) {
2317 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002318 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002319 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002320 free(h);
2321 h = h_next;
2322 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002323
Willy Tarreaubaaee002006-06-26 02:48:02 +02002324 s = p->srv;
2325 while (s) {
2326 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002327
Willy Tarreauf6562792019-05-07 19:05:35 +02002328 task_destroy(s->check.task);
2329 task_destroy(s->agent.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002330
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002331 if (s->check.wait_list.tasklet)
2332 tasklet_free(s->check.wait_list.tasklet);
2333 if (s->agent.wait_list.tasklet)
2334 tasklet_free(s->agent.wait_list.tasklet);
Dragan Dosen026ef572019-04-30 00:56:20 +02002335
Willy Tarreauf6562792019-05-07 19:05:35 +02002336 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002337
Willy Tarreaua534fea2008-08-03 12:19:50 +02002338 free(s->id);
2339 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002340 free(s->check.bi.area);
2341 free(s->check.bo.area);
2342 free(s->agent.bi.area);
2343 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002344 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002345 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002346 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002347 free(s->idle_conns);
2348 free(s->priv_conns);
2349 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002350 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002351 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002352
2353 if (s->use_ssl || s->check.use_ssl) {
2354 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2355 xprt_get(XPRT_SSL)->destroy_srv(s);
2356 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002357 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002358 free(s);
2359 s = s_next;
2360 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002361
Willy Tarreau4348fad2012-09-20 16:48:07 +02002362 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002363 /*
2364 * Zombie proxy, the listener just pretend to be up
2365 * because they still hold an opened fd.
2366 * Close it and give the listener its real state.
2367 */
2368 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2369 close(l->fd);
2370 l->state = LI_INIT;
2371 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002372 unbind_listener(l);
2373 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002374 LIST_DEL(&l->by_fe);
2375 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002376 free(l->name);
2377 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002378 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002379 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002380
Willy Tarreau4348fad2012-09-20 16:48:07 +02002381 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002382 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002383 if (bind_conf->xprt->destroy_bind_conf)
2384 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002385 free(bind_conf->file);
2386 free(bind_conf->arg);
2387 LIST_DEL(&bind_conf->by_fe);
2388 free(bind_conf);
2389 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002390
Christopher Fauletd7c91962015-04-30 11:48:27 +02002391 flt_deinit(p);
2392
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002393 free(p->desc);
2394 free(p->fwdfor_hdr_name);
2395
Willy Tarreauff011f22011-01-06 17:51:27 +01002396 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002397 free_http_res_rules(&p->http_res_rules);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002398 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002399
Willy Tarreaubafbe012017-11-24 17:34:44 +01002400 pool_destroy(p->req_cap_pool);
2401 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002402 if (p->table)
2403 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002404
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002405 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002406 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002407 HA_SPIN_DESTROY(&p0->lbprm.lock);
2408 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002409 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002410 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002411
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002412 while (ua) {
2413 uap = ua;
2414 ua = ua->next;
2415
Willy Tarreaua534fea2008-08-03 12:19:50 +02002416 free(uap->uri_prefix);
2417 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002418 free(uap->node);
2419 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002420
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002421 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002422 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002423
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002424 free(uap);
2425 }
2426
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002427 userlist_free(userlist);
2428
David Carlier834cb2e2015-09-25 12:02:25 +01002429 cfg_unregister_sections();
2430
Christopher Faulet0132d062017-07-26 15:33:35 +02002431 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002432
Willy Tarreaudd815982007-10-16 12:25:14 +02002433 protocol_unbind_all();
2434
Willy Tarreau05554e62016-12-21 20:46:26 +01002435 list_for_each_entry(pdf, &post_deinit_list, list)
2436 pdf->fct();
2437
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002438 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002439 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002440 free(global.chroot); global.chroot = NULL;
2441 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002442 free(global.node); global.node = NULL;
2443 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002444 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002445 task_destroy(global_listener_queue_task); global_listener_queue_task = NULL;
2446 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002447 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002448
William Lallemand0f99e342011-10-12 17:50:54 +02002449 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2450 LIST_DEL(&log->list);
2451 free(log);
2452 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002453 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002454 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002455 LIST_DEL(&wl->list);
2456 free(wl);
2457 }
2458
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002459 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2460 if (bol->must_free)
2461 free((void *)bol->str);
2462 LIST_DEL(&bol->list);
2463 free(bol);
2464 }
2465
Christopher Fauletff2613e2016-11-09 11:36:17 +01002466 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002467 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002468 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002469} /* end deinit() */
2470
William Lallemand72160322018-11-06 17:37:16 +01002471
Willy Tarreau918ff602011-07-25 16:33:49 +02002472/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002473static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002474{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002475 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002476
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002477 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002478 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002479 /* Process a few tasks */
2480 process_runnable_tasks();
2481
William Lallemand1aab50b2018-06-07 09:46:01 +02002482 /* check if we caught some signals and process them in the
2483 first thread */
2484 if (tid == 0)
2485 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002486
Willy Tarreau58b458d2008-06-29 22:40:23 +02002487 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002488 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002489
Willy Tarreau85c459d2018-08-02 10:54:31 +02002490 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002491 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002492 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002493
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002494 /* also stop if we failed to cleanly stop all tasks */
2495 if (killed > 1)
2496 break;
2497
Willy Tarreau10146c92015-04-13 20:44:19 +02002498 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002499 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002500 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002501 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002502 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002503 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002504 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002505 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2506 __ha_barrier_atomic_store();
Olivier Houchardcfbb3e62019-05-29 19:22:43 +02002507 if (global_tasks_mask & tid_bit) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002508 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002509 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002510 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002511 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002512 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002513
Willy Tarreau58b458d2008-06-29 22:40:23 +02002514 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002515 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002516
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002517 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002518 }
2519}
2520
Christopher Faulet1d17c102017-08-29 15:38:48 +02002521static void *run_thread_poll_loop(void *data)
2522{
Willy Tarreau082b6282019-05-22 14:42:12 +02002523 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002524 struct per_thread_init_fct *ptif;
2525 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002526 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002527 static int init_left = 0;
2528 __decl_hathreads(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2529 __decl_hathreads(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002530
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002531 ha_set_tid((unsigned long)data);
Willy Tarreau91e6df02019-05-03 17:21:18 +02002532
Willy Tarreauf6178242019-05-21 19:46:58 +02002533#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002534#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002535 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002536#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002537 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002538#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002539#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002540 /* Now, initialize one thread init at a time. This is better since
2541 * some init code is a bit tricky and may release global resources
2542 * after reallocating them locally. This will also ensure there is
2543 * no race on file descriptors allocation.
2544 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002545#ifdef USE_THREAD
2546 pthread_mutex_lock(&init_mutex);
2547#endif
2548 /* The first thread must set the number of threads left */
2549 if (!init_left)
2550 init_left = global.nbthread;
2551 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002552
Christopher Faulet1d17c102017-08-29 15:38:48 +02002553 tv_update_date(-1,-1);
2554
Willy Tarreau082b6282019-05-22 14:42:12 +02002555 /* per-thread alloc calls performed here are not allowed to snoop on
2556 * other threads, so they are free to initialize at their own rhythm
2557 * as long as they act as if they were alone. None of them may rely
2558 * on resources initialized by the other ones.
2559 */
2560 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2561 if (!ptaf->fct()) {
2562 ha_alert("failed to allocate resources for thread %u.\n", tid);
2563 exit(1);
2564 }
2565 }
2566
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002567 /* per-thread init calls performed here are not allowed to snoop on
2568 * other threads, so they are free to initialize at their own rhythm
2569 * as long as they act as if they were alone.
2570 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002571 list_for_each_entry(ptif, &per_thread_init_list, list) {
2572 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002573 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002574 exit(1);
2575 }
2576 }
2577
Willy Tarreau71092822019-06-10 09:51:04 +02002578 /* enabling protocols will result in fd_insert() calls to be performed,
2579 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002580 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002581 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002582 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002583 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002584
Willy Tarreau34a150c2019-06-11 09:16:41 +02002585#ifdef USE_THREAD
2586 pthread_cond_broadcast(&init_cond);
2587 pthread_mutex_unlock(&init_mutex);
2588
2589 /* now wait for other threads to finish starting */
2590 pthread_mutex_lock(&init_mutex);
2591 while (init_left)
2592 pthread_cond_wait(&init_cond, &init_mutex);
2593 pthread_mutex_unlock(&init_mutex);
2594#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002595
Christopher Faulet1d17c102017-08-29 15:38:48 +02002596 run_poll_loop();
2597
2598 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2599 ptdf->fct();
2600
Willy Tarreau082b6282019-05-22 14:42:12 +02002601 list_for_each_entry(ptff, &per_thread_free_list, list)
2602 ptff->fct();
2603
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002604#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002605 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002606 if (tid > 0)
2607 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002608#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002609 return NULL;
2610}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002611
Willy Tarreaue9b26022011-08-01 20:57:55 +02002612/* This is the global management task for listeners. It enables listeners waiting
2613 * for global resources when there are enough free resource, or at least once in
2614 * a while. It is designed to be called as a task.
2615 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002616static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002617{
2618 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002619 /* queue is empty, nothing to do */
2620 if (LIST_ISEMPTY(&global_listener_queue))
2621 goto out;
2622
2623 /* If there are still too many concurrent connections, let's wait for
2624 * some of them to go away. We don't need to re-arm the timer because
2625 * each of them will scan the queue anyway.
2626 */
2627 if (unlikely(actconn >= global.maxconn))
2628 goto out;
2629
2630 /* We should periodically try to enable listeners waiting for a global
2631 * resource here, because it is possible, though very unlikely, that
2632 * they have been blocked by a temporary lack of global resource such
2633 * as a file descriptor or memory and that the temporary condition has
2634 * disappeared.
2635 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002636 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002637
2638 out:
2639 t->expire = next;
2640 task_queue(t);
2641 return t;
2642}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002643
Willy Tarreaubaaee002006-06-26 02:48:02 +02002644int main(int argc, char **argv)
2645{
2646 int err, retry;
2647 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002648 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002649 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002650
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002651 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002652
Willy Tarreauff9c9142019-02-07 10:39:36 +01002653 /* this can only safely be done here, though it's optimized away by
2654 * the compiler.
2655 */
2656 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2657 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2658 "HAProxy was built with value %d, please fix it and rebuild.\n",
2659 LONGBITS, MAX_PROCS);
2660 exit(1);
2661 }
2662
Willy Tarreaubf696402019-03-01 10:09:28 +01002663 /* take a copy of initial limits before we possibly change them */
2664 getrlimit(RLIMIT_NOFILE, &limit);
2665 rlim_fd_cur_at_boot = limit.rlim_cur;
2666 rlim_fd_max_at_boot = limit.rlim_max;
2667
Willy Tarreau5794fb02018-11-25 18:43:29 +01002668 /* process all initcalls in order of potential dependency */
2669 RUN_INITCALLS(STG_PREPARE);
2670 RUN_INITCALLS(STG_LOCK);
2671 RUN_INITCALLS(STG_ALLOC);
2672 RUN_INITCALLS(STG_POOL);
2673 RUN_INITCALLS(STG_REGISTER);
2674 RUN_INITCALLS(STG_INIT);
2675
Emeric Bruncf20bf12010-10-22 16:06:11 +02002676 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002677 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2678 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2679 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002680 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002681
Willy Tarreaue437c442010-03-17 18:02:46 +01002682 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2683 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2684 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002685 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002686 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002687
Willy Tarreaudc23a922011-02-16 11:10:36 +01002688 /* ulimits */
2689 if (!global.rlimit_nofile)
2690 global.rlimit_nofile = global.maxsock;
2691
2692 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002693 limit.rlim_cur = global.rlimit_nofile;
2694 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2695
Willy Tarreaudc23a922011-02-16 11:10:36 +01002696 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002697 /* try to set it to the max possible at least */
2698 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002699 limit.rlim_cur = limit.rlim_max;
2700 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2701 getrlimit(RLIMIT_NOFILE, &limit);
2702
Christopher Faulet767a84b2017-11-24 16:50:31 +01002703 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 +02002704 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002705 }
2706 }
2707
2708 if (global.rlimit_memmax) {
2709 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002710 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002711#ifdef RLIMIT_AS
2712 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002713 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2714 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002715 }
2716#else
2717 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002718 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2719 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002720 }
2721#endif
2722 }
2723
Olivier Houchardf73629d2017-04-05 22:33:04 +02002724 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002725 if (strcmp("/dev/null", old_unixsocket) != 0) {
2726 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002727 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002728 if (!(global.mode & MODE_MWORKER))
2729 exit(1);
2730 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002731 }
2732 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002733 get_cur_unixsocket();
2734
Willy Tarreaubaaee002006-06-26 02:48:02 +02002735 /* We will loop at most 100 times with 10 ms delay each time.
2736 * That's at most 1 second. We only send a signal to old pids
2737 * if we cannot grab at least one port.
2738 */
2739 retry = MAX_START_RETRIES;
2740 err = ERR_NONE;
2741 while (retry >= 0) {
2742 struct timeval w;
2743 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002744 /* exit the loop on no error or fatal error */
2745 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002746 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002747 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002748 break;
2749
2750 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2751 * listening sockets. So on those platforms, it would be wiser to
2752 * simply send SIGUSR1, which will not be undoable.
2753 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002754 if (tell_old_pids(SIGTTOU) == 0) {
2755 /* no need to wait if we can't contact old pids */
2756 retry = 0;
2757 continue;
2758 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002759 /* give some time to old processes to stop listening */
2760 w.tv_sec = 0;
2761 w.tv_usec = 10*1000;
2762 select(0, NULL, NULL, NULL, &w);
2763 retry--;
2764 }
2765
2766 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002767 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002768 if (retry != MAX_START_RETRIES && nb_oldpids) {
2769 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002770 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002771 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002772 exit(1);
2773 }
2774
William Lallemand944e6192018-11-21 15:48:31 +01002775 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002776 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002777 /* Note: we don't have to send anything to the old pids because we
2778 * never stopped them. */
2779 exit(1);
2780 }
2781
Emeric Bruncf20bf12010-10-22 16:06:11 +02002782 err = protocol_bind_all(errmsg, sizeof(errmsg));
2783 if ((err & ~ERR_WARN) != ERR_NONE) {
2784 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002785 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002786
Christopher Faulet767a84b2017-11-24 16:50:31 +01002787 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002788 protocol_unbind_all(); /* cleanup everything we can */
2789 if (nb_oldpids)
2790 tell_old_pids(SIGTTIN);
2791 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002792 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002793 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002794 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002795 /* Ok, all listener should now be bound, close any leftover sockets
2796 * the previous process gave us, we don't need them anymore
2797 */
2798 while (xfer_sock_list != NULL) {
2799 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2800 close(xfer_sock_list->fd);
2801 free(xfer_sock_list->iface);
2802 free(xfer_sock_list->namespace);
2803 free(xfer_sock_list);
2804 xfer_sock_list = tmpxfer;
2805 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002806
Willy Tarreaubaaee002006-06-26 02:48:02 +02002807 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002808 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2809 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002810
Willy Tarreaubaaee002006-06-26 02:48:02 +02002811 /* MODE_QUIET can inhibit alerts and warnings below this line */
2812
PiBa-NL149a81a2017-12-25 21:03:31 +01002813 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2814 /* either stdin/out/err are already closed or should stay as they are. */
2815 if ((global.mode & MODE_DAEMON)) {
2816 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2817 global.mode &= ~MODE_VERBOSE;
2818 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2819 }
2820 } else {
2821 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2822 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002823 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002824 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002825 }
2826
2827 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002828 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002829 unlink(global.pidfile);
2830 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2831 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002832 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002833 if (nb_oldpids)
2834 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002835 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002836 exit(1);
2837 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002838 }
2839
Willy Tarreaub38651a2007-03-24 17:24:39 +01002840 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002841 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2842 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002843 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002844 exit(1);
2845 }
2846
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002847 /* If the user is not root, we'll still let him try the configuration
2848 * but we inform him that unexpected behaviour may occur.
2849 */
2850 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002851 ha_warning("[%s.main()] Some options which require full privileges"
2852 " might not work well.\n"
2853 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002854
William Lallemand095ba4c2017-06-01 17:38:50 +02002855 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2856
2857 /* chroot if needed */
2858 if (global.chroot != NULL) {
2859 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002860 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002861 if (nb_oldpids)
2862 tell_old_pids(SIGTTIN);
2863 protocol_unbind_all();
2864 exit(1);
2865 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002866 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002867 }
2868
William Lallemand944e6192018-11-21 15:48:31 +01002869 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02002870 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002871
William Lallemand27edc4b2019-05-07 17:49:33 +02002872 /* send a SIGTERM to workers who have a too high reloads number */
2873 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
2874 mworker_kill_max_reloads(SIGTERM);
2875
William Lallemand8a361b52017-06-20 11:20:33 +02002876 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2877 nb_oldpids = 0;
2878 free(oldpids);
2879 oldpids = NULL;
2880 }
2881
2882
Willy Tarreaubaaee002006-06-26 02:48:02 +02002883 /* Note that any error at this stage will be fatal because we will not
2884 * be able to restart the old pids.
2885 */
2886
William Lallemand095ba4c2017-06-01 17:38:50 +02002887 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2888 /* setgid / setuid */
2889 if (global.gid) {
2890 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01002891 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2892 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002893
2894 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002895 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002896 protocol_unbind_all();
2897 exit(1);
2898 }
2899 }
Michael Schererab012dd2013-01-12 18:35:19 +01002900
William Lallemand095ba4c2017-06-01 17:38:50 +02002901 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002902 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002903 protocol_unbind_all();
2904 exit(1);
2905 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002906 }
Willy Tarreau636848a2019-04-15 19:38:50 +02002907
2908 /* try our best to re-enable core dumps depending on system capabilities.
2909 * What is addressed here :
2910 * - remove file size limits
2911 * - remove core size limits
2912 * - mark the process dumpable again if it lost it due to user/group
2913 */
2914 if (global.tune.options & GTUNE_SET_DUMPABLE) {
2915 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
2916
2917#if defined(RLIMIT_FSIZE)
2918 if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
2919 ha_warning("[%s.main()] Failed to set the raise the maximum file size.\n", argv[0]);
2920#endif
2921
2922#if defined(RLIMIT_CORE)
2923 if (setrlimit(RLIMIT_CORE, &limit) == -1)
2924 ha_warning("[%s.main()] Failed to set the raise the core dump size.\n", argv[0]);
2925#endif
2926
2927#if defined(USE_PRCTL)
2928 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
2929 ha_warning("[%s.main()] Failed to set the dumpable flag, no core will be dumped.\n", argv[0]);
2930#endif
2931 }
2932
Willy Tarreaubaaee002006-06-26 02:48:02 +02002933 /* check ulimits */
2934 limit.rlim_cur = limit.rlim_max = 0;
2935 getrlimit(RLIMIT_NOFILE, &limit);
2936 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002937 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",
2938 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002939 }
2940
William Lallemand944e6192018-11-21 15:48:31 +01002941 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002942 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002943 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002944 int ret = 0;
2945 int proc;
William Lallemande1340412017-12-28 16:09:36 +01002946 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002947
William Lallemand095ba4c2017-06-01 17:38:50 +02002948 /*
2949 * if daemon + mworker: must fork here to let a master
2950 * process live in background before forking children
2951 */
William Lallemand73b85e72017-06-01 17:38:51 +02002952
2953 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2954 && (global.mode & MODE_MWORKER)
2955 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002956 ret = fork();
2957 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002958 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002959 protocol_unbind_all();
2960 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02002961 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02002962 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02002963 } else /* change the process group ID in the child (master process) */
2964 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02002965 }
William Lallemande20b6a62017-06-01 17:38:55 +02002966
William Lallemande20b6a62017-06-01 17:38:55 +02002967
William Lallemanddeed7802017-11-06 11:00:04 +01002968 /* if in master-worker mode, write the PID of the father */
2969 if (global.mode & MODE_MWORKER) {
2970 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02002971 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01002972 if (pidfd >= 0)
2973 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01002974 }
2975
Willy Tarreaubaaee002006-06-26 02:48:02 +02002976 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01002977 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02002978 if (global.mode & MODE_MWORKER)
2979 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01002980 for (proc = 0; proc < global.nbproc; proc++) {
2981 ret = fork();
2982 if (ret < 0) {
2983 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
2984 protocol_unbind_all();
2985 exit(1); /* there has been an error */
2986 }
2987 else if (ret == 0) /* child breaks here */
2988 break;
William Lallemand944e6192018-11-21 15:48:31 +01002989 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
2990 char pidstr[100];
2991 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
2992 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
2993 }
2994 if (global.mode & MODE_MWORKER) {
2995 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02002996
William Lallemand220567e2018-11-21 18:04:53 +01002997 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01002998 /* find the right mworker_proc */
2999 list_for_each_entry(child, &proc_list, list) {
3000 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003001 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003002 child->timestamp = now.tv_sec;
3003 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003004 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003005 break;
3006 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003007 }
3008 }
William Lallemandbc193052018-09-11 10:06:26 +02003009
William Lallemand944e6192018-11-21 15:48:31 +01003010 relative_pid++; /* each child will get a different one */
3011 pid_bit <<= 1;
3012 }
3013 } else {
3014 /* wait mode */
3015 global.nbproc = 1;
3016 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003017 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003018
3019#ifdef USE_CPU_AFFINITY
3020 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003021 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003022 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003023#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003024 {
3025 cpuset_t cpuset;
3026 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003027 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003028
3029 CPU_ZERO(&cpuset);
3030 while ((i = ffsl(cpu_map)) > 0) {
3031 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003032 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003033 }
3034 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3035 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003036#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003037 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003038#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003039#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003040 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003041 if (pidfd >= 0) {
3042 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3043 close(pidfd);
3044 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003045
3046 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003047 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003048
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003049 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003050 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003051
3052 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3053 (global.mode & MODE_DAEMON)) {
3054 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003055 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3056 stdio_quiet(-1);
3057
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003058 global.mode &= ~MODE_VERBOSE;
3059 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003060 }
3061
William Lallemandb3f2be32018-09-11 10:06:18 +02003062 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003063 /* should never get there */
3064 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003065 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003066#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003067 ssl_free_dh();
3068#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003069 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003070 }
3071
William Lallemandcb11fd22017-06-01 17:38:52 +02003072 /* child must never use the atexit function */
3073 atexit_flag = 0;
3074
William Lallemandbc193052018-09-11 10:06:26 +02003075 /* close useless master sockets */
3076 if (global.mode & MODE_MWORKER) {
3077 struct mworker_proc *child, *it;
3078 master = 0;
3079
William Lallemand309dc9a2018-10-26 14:47:45 +02003080 mworker_cli_proxy_stop();
3081
William Lallemandbc193052018-09-11 10:06:26 +02003082 /* free proc struct of other processes */
3083 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003084 /* close the FD of the master side for all
3085 * workers, we don't need to close the worker
3086 * side of other workers since it's done with
3087 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003088 if (child->ipc_fd[0] >= 0)
3089 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003090 if (child->relative_pid == relative_pid &&
3091 child->reloads == 0) {
3092 /* keep this struct if this is our pid */
3093 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003094 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003095 }
William Lallemandbc193052018-09-11 10:06:26 +02003096 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003097 mworker_free_child(child);
3098 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003099 }
3100 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003101
William Lallemande1340412017-12-28 16:09:36 +01003102 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3103 devnullfd = open("/dev/null", O_RDWR, 0);
3104 if (devnullfd < 0) {
3105 ha_alert("Cannot open /dev/null\n");
3106 exit(EXIT_FAILURE);
3107 }
3108 }
3109
William Lallemand095ba4c2017-06-01 17:38:50 +02003110 /* Must chroot and setgid/setuid in the children */
3111 /* chroot if needed */
3112 if (global.chroot != NULL) {
3113 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003114 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003115 if (nb_oldpids)
3116 tell_old_pids(SIGTTIN);
3117 protocol_unbind_all();
3118 exit(1);
3119 }
3120 }
3121
3122 free(global.chroot);
3123 global.chroot = NULL;
3124
3125 /* setgid / setuid */
3126 if (global.gid) {
3127 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003128 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3129 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003130
3131 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003132 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003133 protocol_unbind_all();
3134 exit(1);
3135 }
3136 }
3137
3138 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003139 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003140 protocol_unbind_all();
3141 exit(1);
3142 }
3143
William Lallemand7f80eb22017-05-26 18:19:55 +02003144 /* pass through every cli socket, and check if it's bound to
3145 * the current process and if it exposes listeners sockets.
3146 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3147 * */
3148
3149 if (global.stats_fe) {
3150 struct bind_conf *bind_conf;
3151
3152 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3153 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3154 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3155 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3156 break;
3157 }
3158 }
3159 }
3160 }
3161
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003162 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003163 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003164 while (px != NULL) {
3165 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003166 if (!(px->bind_proc & (1UL << proc))) {
3167 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3168 zombify_proxy(px);
3169 else
3170 stop_proxy(px);
3171 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003172 }
3173 px = px->next;
3174 }
3175
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003176 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003177 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003178 if (!curpeers->peers_fe)
3179 continue;
3180
3181 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3182 continue;
3183
3184 stop_proxy(curpeers->peers_fe);
3185 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003186 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003187 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003188 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003189 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003190 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003191 curpeers->peers_fe = NULL;
3192 }
3193
William Lallemand2e8fad92018-11-13 16:18:23 +01003194 /*
3195 * This is only done in daemon mode because we might want the
3196 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3197 * we should now close the 3 first FDs to ensure that we can
3198 * detach from the TTY. We MUST NOT do it in other cases since
3199 * it would have already be done, and 0-2 would have been
3200 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003201 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003202 if ((global.mode & MODE_DAEMON) &&
3203 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003204 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003205 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003206 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003207 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3208 }
3209 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003210 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3211 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003212 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003213 }
3214
Christopher Faulete3a5e352017-10-24 13:53:54 +02003215 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003216 /*
3217 * That's it : the central polling loop. Run until we stop.
3218 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003219#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003220 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003221 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003222 int i;
3223
William Lallemand1aab50b2018-06-07 09:46:01 +02003224 /* ensure the signals will be blocked in every thread */
3225 sigfillset(&blocked_sig);
3226 sigdelset(&blocked_sig, SIGPROF);
3227 sigdelset(&blocked_sig, SIGBUS);
3228 sigdelset(&blocked_sig, SIGFPE);
3229 sigdelset(&blocked_sig, SIGILL);
3230 sigdelset(&blocked_sig, SIGSEGV);
3231 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3232
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003233 /* Create nbthread-1 thread. The first thread is the current process */
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003234 thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003235 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003236 pthread_create(&thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003237
Christopher Faulet62519022017-10-16 15:49:32 +02003238#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003239 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003240 if (global.cpu_map.proc_t1[relative_pid-1])
3241 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3242
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003243 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003244 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003245 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003246
Willy Tarreau421f02e2018-01-20 18:19:22 +01003247 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003248 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
Olivier Houchard829aa242017-12-01 18:19:43 +01003249#if defined(__FreeBSD__) || defined(__NetBSD__)
3250 cpuset_t cpuset;
3251#else
3252 cpu_set_t cpuset;
3253#endif
3254 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003255 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003256
3257 CPU_ZERO(&cpuset);
3258
3259 while ((j = ffsl(cpu_map)) > 0) {
3260 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003261 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003262 }
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003263 pthread_setaffinity_np(thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003264 sizeof(cpuset), &cpuset);
3265 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003266 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003267#endif /* !USE_CPU_AFFINITY */
3268
William Lallemand1aab50b2018-06-07 09:46:01 +02003269 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003270 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003271
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003272 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003273 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003274
3275 /* Wait the end of other threads */
3276 for (i = 1; i < global.nbthread; i++)
Willy Tarreau522cfbc2019-05-03 10:16:39 +02003277 pthread_join(thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003278
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003279#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3280 show_lock_stats();
3281#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003282 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003283#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003284 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003285 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003286#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003287
3288 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003289 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003290
Willy Tarreaubaaee002006-06-26 02:48:02 +02003291 exit(0);
3292}
3293
3294
3295/*
3296 * Local variables:
3297 * c-indent-level: 8
3298 * c-basic-offset: 8
3299 * End:
3300 */