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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau6c1b6672019-02-26 16:43:49 +01003 * Copyright 2000-2019 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000055#if defined(__FreeBSD__) || defined(__DragonFly__)
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020056#include <sys/param.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000057#ifdef __FreeBSD__
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020058#include <sys/cpuset.h>
David Carlier42d9e5a2018-11-12 16:22:19 +000059#endif
David Carlier6d5c8412017-11-29 11:02:32 +000060#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020061#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010062#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020063
64#ifdef DEBUG_FULL
65#include <assert.h>
66#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010067#if defined(USE_SYSTEMD)
68#include <systemd/sd-daemon.h>
69#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020070
Willy Tarreau2dd0d472006-06-29 17:53:05 +020071#include <common/base64.h>
72#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020073#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020074#include <common/compat.h>
75#include <common/config.h>
76#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010077#include <common/errors.h>
Willy Tarreau5794fb02018-11-25 18:43:29 +010078#include <common/initcall.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020079#include <common/memory.h>
80#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010081#include <common/namespace.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020082#include <common/regex.h>
83#include <common/standard.h>
84#include <common/time.h>
85#include <common/uri_auth.h>
86#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020087#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020088
89#include <types/capture.h>
William Lallemandce83b4a2018-10-26 14:47:30 +020090#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020091#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020092#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090093#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020094#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020095
Willy Tarreau0fc45a72007-06-17 00:36:03 +020096#include <proto/acl.h>
Willy Tarreau609aad92018-11-22 08:31:09 +010097#include <proto/activity.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +020098#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +020099#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200100#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200101#include <proto/channel.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200102#include <proto/cli.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200103#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200104#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200105#include <proto/filters.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +0200106#include <proto/hdr_idx.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100107#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +0200108#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200109#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200110#include <proto/log.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100111#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200112#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +0100113#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200114#include <proto/proxy.h>
115#include <proto/queue.h>
116#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200117#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200118#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200119#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200120#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200121#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100122#include <proto/vars.h>
Willy Tarreau50bc31d2017-08-16 15:35:19 +0200123#ifdef USE_OPENSSL
Grant Zhang872f9c22017-01-21 01:10:18 +0000124#include <proto/ssl_sock.h>
Willy Tarreau50bc31d2017-08-16 15:35:19 +0200125#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200126
Willy Tarreau477ecd82010-01-03 21:12:30 +0100127/* list of config files */
128static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200129int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100130int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100131unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100132unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200133
Olivier Houchard79321b92018-07-26 17:55:11 +0200134volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200135/* global options */
136struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100137 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100138 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100139 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200140 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200141 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100142 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100143 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100144 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200145 .unix_bind = {
146 .ux = {
147 .uid = -1,
148 .gid = -1,
149 .mode = 0,
150 }
151 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200152 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100153 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100154 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreau27097842015-09-28 13:53:23 +0200155 .maxrewrite = -1,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100156 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100157 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200158 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200159#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100160 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200161#endif
William Lallemandf3747832012-11-09 12:33:10 +0100162 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100163#ifdef DEFAULT_IDLE_TIMER
164 .idle_timer = DEFAULT_IDLE_TIMER,
165#else
166 .idle_timer = 1000, /* 1 second */
167#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200168 },
Emeric Brun76d88952012-10-05 15:47:31 +0200169#ifdef USE_OPENSSL
170#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200171 .maxsslconn = DEFAULT_MAXSSLCONN,
172#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200173#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200174 /* others NULL OK */
175};
176
177/*********************************************************************/
178
179int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100180int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200181int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100182int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100183int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100184int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200185
186/* Here we store informations about the pids of the processes we may pause
187 * or kill. We will send them a signal every 10 ms until we can bind to all
188 * our ports. With 200 retries, that's about 2 seconds.
189 */
190#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200191static int *oldpids = NULL;
192static int oldpids_sig; /* use USR1 or TERM */
193
Olivier Houchardf73629d2017-04-05 22:33:04 +0200194/* Path to the unix socket we use to retrieve listener sockets from the old process */
195static const char *old_unixsocket;
196
William Lallemand85b0bd92017-06-01 17:38:53 +0200197static char *cur_unixsocket = NULL;
198
William Lallemandcb11fd22017-06-01 17:38:52 +0200199int atexit_flag = 0;
200
William Lallemand91723742018-11-06 17:37:14 +0100201static int exitcode = -1;
202
Willy Tarreaubb545b42010-08-25 12:58:59 +0200203int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200204const int zero = 0;
205const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200206const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200207
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100208char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200209char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200210
Willy Tarreau89efaed2013-12-13 15:14:55 +0100211/* used from everywhere just to drain results we don't want to read and which
212 * recent versions of gcc increasingly and annoyingly complain about.
213 */
214int shut_your_big_mouth_gcc_int = 0;
215
William Lallemand73b85e72017-06-01 17:38:51 +0200216int *children = NULL; /* store PIDs of children in master workers mode */
217
William Lallemand73b85e72017-06-01 17:38:51 +0200218static char **next_argv = NULL;
219
William Lallemandbc193052018-09-11 10:06:26 +0200220struct list proc_list = LIST_HEAD_INIT(proc_list);
221
222int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100223unsigned int rlim_fd_cur_at_boot = 0;
224unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200225
William Lallemand16dd1b32018-11-19 18:46:18 +0100226struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200227
Willy Tarreau08ceb102011-07-24 22:58:00 +0200228/* list of the temporarily limited listeners because of lack of resource */
229struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200230struct task *global_listener_queue_task;
Olivier Houchard9f6af332018-05-25 14:04:04 +0200231static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200232
William Lallemandb3f2be32018-09-11 10:06:18 +0200233static void *run_thread_poll_loop(void *data);
234
Willy Tarreauff055502014-04-28 22:27:06 +0200235/* bitfield of a few warnings to emit just once (WARN_*) */
236unsigned int warned = 0;
237
William Lallemande7361152018-10-26 14:47:36 +0200238/* master CLI configuration (-S flag) */
239struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100240
241/* These are strings to be reported in the output of "haproxy -vv". They may
242 * either be constants (in which case must_free must be zero) or dynamically
243 * allocated strings to pass to free() on exit, and in this case must_free
244 * must be non-zero.
245 */
246struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
247struct build_opts_str {
248 struct list list;
249 const char *str;
250 int must_free;
251};
252
Willy Tarreaue6945732016-12-21 19:57:00 +0100253/* These functions are called just after the point where the program exits
254 * after a config validity check, so they are generally suited for resource
255 * allocation and slow initializations that should be skipped during basic
256 * config checks. The functions must return 0 on success, or a combination
257 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
258 * and immediate exit, so the function must have emitted any useful error.
259 */
260struct list post_check_list = LIST_HEAD_INIT(post_check_list);
261struct post_check_fct {
262 struct list list;
263 int (*fct)();
264};
265
Willy Tarreau05554e62016-12-21 20:46:26 +0100266/* These functions are called when freeing the global sections at the end
267 * of deinit, after everything is stopped. They don't return anything, and
268 * they work in best effort mode as their sole goal is to make valgrind
269 * mostly happy.
270 */
271struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
272struct post_deinit_fct {
273 struct list list;
274 void (*fct)();
275};
276
Christopher Faulet415f6112017-07-25 16:52:58 +0200277/* These functions are called for each thread just after the thread creation
278 * and before running the scheduler. They should be used to do per-thread
279 * initializations. They must return 0 if an error occurred. */
280struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
281struct per_thread_init_fct {
282 struct list list;
283 int (*fct)();
284};
285
286/* These functions are called for each thread just after the scheduler loop and
287 * before exiting the thread. They don't return anything and, as for post-deinit
288 * functions, they work in best effort mode as their sole goal is to make
289 * valgrind mostly happy. */
290struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
291struct per_thread_deinit_fct {
292 struct list list;
293 void (*fct)();
294};
295
Willy Tarreaubaaee002006-06-26 02:48:02 +0200296/*********************************************************************/
297/* general purpose functions ***************************************/
298/*********************************************************************/
299
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100300/* used to register some build option strings at boot. Set must_free to
301 * non-zero if the string must be freed upon exit.
302 */
303void hap_register_build_opts(const char *str, int must_free)
304{
305 struct build_opts_str *b;
306
307 b = calloc(1, sizeof(*b));
308 if (!b) {
309 fprintf(stderr, "out of memory\n");
310 exit(1);
311 }
312 b->str = str;
313 b->must_free = must_free;
314 LIST_ADDQ(&build_opts_list, &b->list);
315}
316
Willy Tarreaue6945732016-12-21 19:57:00 +0100317/* used to register some initialization functions to call after the checks. */
318void hap_register_post_check(int (*fct)())
319{
320 struct post_check_fct *b;
321
322 b = calloc(1, sizeof(*b));
323 if (!b) {
324 fprintf(stderr, "out of memory\n");
325 exit(1);
326 }
327 b->fct = fct;
328 LIST_ADDQ(&post_check_list, &b->list);
329}
330
Willy Tarreau05554e62016-12-21 20:46:26 +0100331/* used to register some de-initialization functions to call after everything
332 * has stopped.
333 */
334void hap_register_post_deinit(void (*fct)())
335{
336 struct post_deinit_fct *b;
337
338 b = calloc(1, sizeof(*b));
339 if (!b) {
340 fprintf(stderr, "out of memory\n");
341 exit(1);
342 }
343 b->fct = fct;
344 LIST_ADDQ(&post_deinit_list, &b->list);
345}
346
Christopher Faulet415f6112017-07-25 16:52:58 +0200347/* used to register some initialization functions to call for each thread. */
348void hap_register_per_thread_init(int (*fct)())
349{
350 struct per_thread_init_fct *b;
351
352 b = calloc(1, sizeof(*b));
353 if (!b) {
354 fprintf(stderr, "out of memory\n");
355 exit(1);
356 }
357 b->fct = fct;
358 LIST_ADDQ(&per_thread_init_list, &b->list);
359}
360
361/* used to register some de-initialization functions to call for each thread. */
362void hap_register_per_thread_deinit(void (*fct)())
363{
364 struct per_thread_deinit_fct *b;
365
366 b = calloc(1, sizeof(*b));
367 if (!b) {
368 fprintf(stderr, "out of memory\n");
369 exit(1);
370 }
371 b->fct = fct;
372 LIST_ADDQ(&per_thread_deinit_list, &b->list);
373}
374
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100375static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200376{
Willy Tarreau909b9d82019-01-04 18:20:32 +0100377 printf("HA-Proxy version %s %s - https://haproxy.org/\n", haproxy_version, haproxy_date);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200378}
379
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100380static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100381{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100382 struct build_opts_str *item;
383
Willy Tarreau7b066db2007-12-02 11:28:59 +0100384 printf("Build options :"
385#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100386 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100387#endif
388#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100389 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100390#endif
391#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100392 "\n CC = " BUILD_CC
393#endif
394#ifdef BUILD_CFLAGS
395 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100396#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100397#ifdef BUILD_OPTIONS
398 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100399#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200400 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100401 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200402 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100403 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200404
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100405 list_for_each_entry(item, &build_opts_list, list) {
406 puts(item->str);
407 }
408
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100409 putchar('\n');
410
Willy Tarreaube5b6852009-10-03 18:57:08 +0200411 list_pollers(stdout);
412 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200413 list_mux_proto(stdout);
414 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100415 list_filters(stdout);
416 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100417}
418
Willy Tarreaubaaee002006-06-26 02:48:02 +0200419/*
420 * This function prints the command line usage and exits
421 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100422static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200423{
424 display_version();
425 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200426 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200427 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200428 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100429 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200430 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200431 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200432 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200433 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200434 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100435#if defined(USE_SYSTEMD)
436 " -Ws master-worker mode with systemd notify support.\n"
437#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200438 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200439 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100440 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200441 " -m limits the usable amount of memory (in MB)\n"
442 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200443 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200444 " -p writes pids of all children to this file\n"
445#if defined(ENABLE_EPOLL)
446 " -de disables epoll() usage even when available\n"
447#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200448#if defined(ENABLE_KQUEUE)
449 " -dk disables kqueue() usage even when available\n"
450#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200451#if defined(ENABLE_POLL)
452 " -dp disables poll() usage even when available\n"
453#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200454#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100455 " -dS disables splice usage (broken on old kernels)\n"
456#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200457#if defined(USE_GETADDRINFO)
458 " -dG disables getaddrinfo() usage\n"
459#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000460#if defined(SO_REUSEPORT)
461 " -dR disables SO_REUSEPORT usage\n"
462#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100463 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100464 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200465 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200466 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemande7361152018-10-26 14:47:36 +0200467 " -S <unix_socket>[,<bind options>...] new stats socket for the master\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200468 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100469 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200470 exit(1);
471}
472
473
474
475/*********************************************************************/
476/* more specific functions ***************************************/
477/*********************************************************************/
478
William Lallemand73b85e72017-06-01 17:38:51 +0200479/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
480 * pids the signal was correctly delivered to.
481 */
482static int tell_old_pids(int sig)
483{
484 int p;
485 int ret = 0;
486 for (p = 0; p < nb_oldpids; p++)
487 if (kill(oldpids[p], sig) == 0)
488 ret++;
489 return ret;
490}
491
492/* return 1 if a pid is a current child otherwise 0 */
493
494int current_child(int pid)
495{
496 int i;
497
498 for (i = 0; i < global.nbproc; i++) {
499 if (children[i] == pid)
500 return 1;
501 }
502 return 0;
503}
504
William Lallemand73b85e72017-06-01 17:38:51 +0200505static void mworker_block_signals()
506{
507 sigset_t set;
508
509 sigemptyset(&set);
510 sigaddset(&set, SIGUSR1);
511 sigaddset(&set, SIGUSR2);
512 sigaddset(&set, SIGHUP);
William Lallemandebf304f2018-09-11 10:06:21 +0200513 sigaddset(&set, SIGCHLD);
William Lallemand6e1796e2018-06-07 11:23:40 +0200514 ha_sigmask(SIG_SETMASK, &set, NULL);
William Lallemand73b85e72017-06-01 17:38:51 +0200515}
516
517static void mworker_unblock_signals()
518{
William Lallemandd3801c12018-09-11 10:06:23 +0200519 haproxy_unblock_signals();
William Lallemand73b85e72017-06-01 17:38:51 +0200520}
521
William Lallemand73b85e72017-06-01 17:38:51 +0200522/*
523 * Send signal to every known children.
524 */
525
526static void mworker_kill(int sig)
527{
528 int i;
529
530 tell_old_pids(sig);
531 if (children) {
532 for (i = 0; i < global.nbproc; i++)
533 kill(children[i], sig);
534 }
William Lallemandbc193052018-09-11 10:06:26 +0200535}
536
537/*
538 * serialize the proc list and put it in the environment
539 */
540static void mworker_proc_list_to_env()
541{
542 char *msg = NULL;
543 struct mworker_proc *child;
544
545 list_for_each_entry(child, &proc_list, list) {
William Lallemand6e0d8ae2018-12-14 19:31:21 +0100546 if (child->pid > -1)
547 memprintf(&msg, "%s|type=%c;fd=%d;pid=%d;rpid=%d;reloads=%d;timestamp=%d", msg ? msg : "", child->type, child->ipc_fd[0], child->pid, child->relative_pid, child->reloads, child->timestamp);
William Lallemandbc193052018-09-11 10:06:26 +0200548 }
549 if (msg)
William Lallemand16dd1b32018-11-19 18:46:18 +0100550 setenv("HAPROXY_PROCESSES", msg, 1);
William Lallemandbc193052018-09-11 10:06:26 +0200551}
552
553/*
554 * unserialize the proc list from the environment
555 */
556static void mworker_env_to_proc_list()
557{
558 char *msg, *token = NULL, *s1;
559
William Lallemand16dd1b32018-11-19 18:46:18 +0100560 msg = getenv("HAPROXY_PROCESSES");
William Lallemandbc193052018-09-11 10:06:26 +0200561 if (!msg)
562 return;
563
564 while ((token = strtok_r(msg, "|", &s1))) {
565 struct mworker_proc *child;
566 char *subtoken = NULL;
567 char *s2;
568
569 msg = NULL;
570
571 child = calloc(1, sizeof(*child));
572
573 while ((subtoken = strtok_r(token, ";", &s2))) {
574
575 token = NULL;
576
William Lallemand16dd1b32018-11-19 18:46:18 +0100577 if (strncmp(subtoken, "type=", 5) == 0) {
578 child->type = *(subtoken+5);
579 if (child->type == 'm') /* we are in the master, assign it */
580 proc_self = child;
581 } else if (strncmp(subtoken, "fd=", 3) == 0) {
William Lallemandbc193052018-09-11 10:06:26 +0200582 child->ipc_fd[0] = atoi(subtoken+3);
583 } else if (strncmp(subtoken, "pid=", 4) == 0) {
584 child->pid = atoi(subtoken+4);
585 } else if (strncmp(subtoken, "rpid=", 5) == 0) {
586 child->relative_pid = atoi(subtoken+5);
William Lallemandf1a62862018-10-26 14:47:29 +0200587 } else if (strncmp(subtoken, "reloads=", 8) == 0) {
588 /* we reloaded this process once more */
589 child->reloads = atoi(subtoken+8) + 1;
William Lallemande3683302018-11-19 18:46:17 +0100590 } else if (strncmp(subtoken, "timestamp=", 10) == 0) {
591 child->timestamp = atoi(subtoken+10);
William Lallemandbc193052018-09-11 10:06:26 +0200592 }
593 }
594 if (child->pid)
595 LIST_ADDQ(&proc_list, &child->list);
596 else
597 free(child);
598 }
599
William Lallemand16dd1b32018-11-19 18:46:18 +0100600 unsetenv("HAPROXY_PROCESSES");
William Lallemand73b85e72017-06-01 17:38:51 +0200601}
602
Willy Tarreaubaaee002006-06-26 02:48:02 +0200603/*
William Lallemand75ea0a02017-11-15 19:02:58 +0100604 * Upon a reload, the master worker needs to close all listeners FDs but the mworker_pipe
605 * fd, and the FD provided by fd@
606 */
607static void mworker_cleanlisteners()
608{
609 struct listener *l, *l_next;
610 struct proxy *curproxy;
Willy Tarreau473cf5d2017-12-05 11:14:12 +0100611 struct peers *curpeers;
William Lallemand75ea0a02017-11-15 19:02:58 +0100612
William Lallemand3da97692018-09-11 10:06:19 +0200613 /* we might have to unbind some peers sections from some processes */
614 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
615 if (!curpeers->peers_fe)
616 continue;
Willy Tarreau473cf5d2017-12-05 11:14:12 +0100617
William Lallemand3da97692018-09-11 10:06:19 +0200618 stop_proxy(curpeers->peers_fe);
619 /* disable this peer section so that it kills itself */
620 signal_unregister_handler(curpeers->sighandler);
621 task_delete(curpeers->sync_task);
622 task_free(curpeers->sync_task);
623 curpeers->sync_task = NULL;
624 task_free(curpeers->peers_fe->task);
625 curpeers->peers_fe->task = NULL;
626 curpeers->peers_fe = NULL;
627 }
William Lallemand75ea0a02017-11-15 19:02:58 +0100628
William Lallemand91c13b62018-09-11 10:06:20 +0200629 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
William Lallemand2fd45fa2018-12-03 20:34:44 +0100630 int listen_in_master = 0;
631
William Lallemand75ea0a02017-11-15 19:02:58 +0100632 list_for_each_entry_safe(l, l_next, &curproxy->conf.listeners, by_fe) {
William Lallemande22f11f2018-09-11 10:06:27 +0200633 /* remove the listener, but not those we need in the master... */
William Lallemanddd319a52018-10-12 10:39:54 +0200634 if (!(l->options & LI_O_MWORKER)) {
635 /* unbind the listener but does not close if
636 the FD is inherited with fd@ from the parent
637 process */
638 if (l->options & LI_O_INHERITED)
639 unbind_listener_no_close(l);
640 else
641 unbind_listener(l);
William Lallemande22f11f2018-09-11 10:06:27 +0200642 delete_listener(l);
William Lallemand2fd45fa2018-12-03 20:34:44 +0100643 } else {
644 listen_in_master = 1;
William Lallemanddd319a52018-10-12 10:39:54 +0200645 }
William Lallemand75ea0a02017-11-15 19:02:58 +0100646 }
William Lallemand2fd45fa2018-12-03 20:34:44 +0100647 /* if the proxy shouldn't be in the master, we stop it */
648 if (!listen_in_master)
649 curproxy->state = PR_STSTOPPED;
William Lallemand75ea0a02017-11-15 19:02:58 +0100650 }
651}
652
653
654/*
William Lallemand73b85e72017-06-01 17:38:51 +0200655 * remove a pid forom the olpid array and decrease nb_oldpids
656 * return 1 pid was found otherwise return 0
657 */
658
659int delete_oldpid(int pid)
660{
661 int i;
662
663 for (i = 0; i < nb_oldpids; i++) {
664 if (oldpids[i] == pid) {
665 oldpids[i] = oldpids[nb_oldpids - 1];
666 oldpids[nb_oldpids - 1] = 0;
667 nb_oldpids--;
668 return 1;
669 }
670 }
671 return 0;
672}
673
William Lallemand85b0bd92017-06-01 17:38:53 +0200674
675static void get_cur_unixsocket()
676{
677 /* if -x was used, try to update the stat socket if not available anymore */
678 if (global.stats_fe) {
679 struct bind_conf *bind_conf;
680
681 /* pass through all stats socket */
682 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
683 struct listener *l;
684
685 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
686
687 if (l->addr.ss_family == AF_UNIX &&
688 (bind_conf->level & ACCESS_FD_LISTENERS)) {
689 const struct sockaddr_un *un;
690
691 un = (struct sockaddr_un *)&l->addr;
692 /* priority to old_unixsocket */
693 if (!cur_unixsocket) {
694 cur_unixsocket = strdup(un->sun_path);
695 } else {
696 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
697 free(cur_unixsocket);
698 cur_unixsocket = strdup(old_unixsocket);
699 return;
700 }
701 }
702 }
703 }
704 }
705 }
706 if (!cur_unixsocket && old_unixsocket)
707 cur_unixsocket = strdup(old_unixsocket);
708}
709
William Lallemand73b85e72017-06-01 17:38:51 +0200710/*
711 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800712 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200713 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100714void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200715{
716 int next_argc = 0;
717 int j;
718 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100719 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100720 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200721
722 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100723#if defined(USE_SYSTEMD)
724 if (global.tune.options & GTUNE_USE_SYSTEMD)
725 sd_notify(0, "RELOADING=1");
726#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200727 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
728
William Lallemandbc193052018-09-11 10:06:26 +0200729 mworker_proc_list_to_env(); /* put the children description in the env */
730
William Lallemand7c756a82018-11-26 11:53:40 +0100731 /* during the reload we must ensure that every FDs that can't be
732 * reuse (ie those that are not referenced in the proc_list)
733 * are closed or they will leak. */
734
735 /* close the listeners FD */
736 mworker_cli_proxy_stop();
737 /* close the poller FD and the thread waker pipe FD */
738 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
739 ptdf->fct();
740 if (fdtab)
741 deinit_pollers();
742
Willy Tarreau8dca1952019-03-01 10:21:55 +0100743 /* restore the initial FD limits */
744 limit.rlim_cur = rlim_fd_cur_at_boot;
745 limit.rlim_max = rlim_fd_max_at_boot;
746 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
747 getrlimit(RLIMIT_NOFILE, &limit);
748 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
749 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
750 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
751 }
752
William Lallemand73b85e72017-06-01 17:38:51 +0200753 /* compute length */
754 while (next_argv[next_argc])
755 next_argc++;
756
William Lallemand85b0bd92017-06-01 17:38:53 +0200757 /* 1 for haproxy -sf, 2 for -x /socket */
758 next_argv = realloc(next_argv, (next_argc + 1 + 2 + global.nbproc + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200759 if (next_argv == NULL)
760 goto alloc_error;
761
762
763 /* add -sf <PID>* to argv */
764 if (children || nb_oldpids > 0)
765 next_argv[next_argc++] = "-sf";
766 if (children) {
767 for (j = 0; j < global.nbproc; next_argc++,j++) {
768 next_argv[next_argc] = memprintf(&msg, "%d", children[j]);
769 if (next_argv[next_argc] == NULL)
770 goto alloc_error;
771 msg = NULL;
772 }
773 }
774 /* copy old process PIDs */
775 for (j = 0; j < nb_oldpids; next_argc++,j++) {
776 next_argv[next_argc] = memprintf(&msg, "%d", oldpids[j]);
777 if (next_argv[next_argc] == NULL)
778 goto alloc_error;
779 msg = NULL;
780 }
781 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200782
William Lallemand2bf6d622017-06-20 11:20:23 +0200783 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200784 if (cur_unixsocket) {
785
William Lallemand2bf6d622017-06-20 11:20:23 +0200786 next_argv[next_argc++] = "-x";
787 next_argv[next_argc++] = (char *)cur_unixsocket;
788 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200789 }
790
Christopher Faulet767a84b2017-11-24 16:50:31 +0100791 ha_warning("Reexecuting Master process\n");
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100792 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200793
Christopher Faulet767a84b2017-11-24 16:50:31 +0100794 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100795 return;
796
William Lallemand73b85e72017-06-01 17:38:51 +0200797alloc_error:
Joseph Herlant07a08342018-11-15 10:43:05 -0800798 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200799 return;
800}
801
William Lallemand73b85e72017-06-01 17:38:51 +0200802/*
William Lallemandb3f2be32018-09-11 10:06:18 +0200803 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800804 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200805 */
William Lallemandb3f2be32018-09-11 10:06:18 +0200806static void mworker_catch_sighup(struct sig_handler *sh)
William Lallemand73b85e72017-06-01 17:38:51 +0200807{
William Lallemandb3f2be32018-09-11 10:06:18 +0200808 mworker_reload();
809}
William Lallemand73b85e72017-06-01 17:38:51 +0200810
William Lallemandb3f2be32018-09-11 10:06:18 +0200811static void mworker_catch_sigterm(struct sig_handler *sh)
812{
813 int sig = sh->arg;
William Lallemand2f8b31c2017-11-15 19:02:56 +0100814
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100815#if defined(USE_SYSTEMD)
William Lallemandb3f2be32018-09-11 10:06:18 +0200816 if (global.tune.options & GTUNE_USE_SYSTEMD) {
817 sd_notify(0, "STOPPING=1");
818 }
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100819#endif
William Lallemandb3f2be32018-09-11 10:06:18 +0200820 ha_warning("Exiting Master process...\n");
821 mworker_kill(sig);
822}
William Lallemand73b85e72017-06-01 17:38:51 +0200823
William Lallemandb3f2be32018-09-11 10:06:18 +0200824/*
825 * Wait for every children to exit
826 */
William Lallemand73b85e72017-06-01 17:38:51 +0200827
William Lallemandb3f2be32018-09-11 10:06:18 +0200828static void mworker_catch_sigchld(struct sig_handler *sh)
829{
830 int exitpid = -1;
831 int status = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200832 struct mworker_proc *child, *it;
William Lallemand73b85e72017-06-01 17:38:51 +0200833
William Lallemandb3f2be32018-09-11 10:06:18 +0200834restart_wait:
William Lallemand73b85e72017-06-01 17:38:51 +0200835
William Lallemandb3f2be32018-09-11 10:06:18 +0200836 exitpid = waitpid(-1, &status, WNOHANG);
837 if (exitpid > 0) {
William Lallemand73b85e72017-06-01 17:38:51 +0200838 if (WIFEXITED(status))
839 status = WEXITSTATUS(status);
840 else if (WIFSIGNALED(status))
841 status = 128 + WTERMSIG(status);
842 else if (WIFSTOPPED(status))
843 status = 128 + WSTOPSIG(status);
844 else
845 status = 255;
846
William Lallemandbc193052018-09-11 10:06:26 +0200847 list_for_each_entry_safe(child, it, &proc_list, list) {
848 if (child->pid != exitpid)
849 continue;
850
851 LIST_DEL(&child->list);
852 close(child->ipc_fd[0]);
William Lallemandbc193052018-09-11 10:06:26 +0200853 break;
854 }
855
William Lallemand73b85e72017-06-01 17:38:51 +0200856 if (!children) {
William Lallemand18e52a82018-11-06 17:37:13 +0100857 ha_warning("Worker %d exited with code %d (%s)\n", exitpid, status, (status >= 128) ? strsignal(status - 128) : "Exit");
William Lallemand73b85e72017-06-01 17:38:51 +0200858 } else {
859 /* check if exited child was in the current children list */
860 if (current_child(exitpid)) {
William Lallemand18e52a82018-11-06 17:37:13 +0100861 ha_alert("Current worker #%d (%d) exited with code %d (%s)\n", child->relative_pid, exitpid, status, (status >= 128) ? strsignal(status - 128) : "Exit");
William Lallemand69f9b3b2017-06-01 17:38:54 +0200862 if (status != 0 && status != 130 && status != 143
William Lallemand4cfede82017-11-24 22:02:34 +0100863 && !(global.tune.options & GTUNE_NOEXIT_ONFAILURE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100864 ha_alert("exit-on-failure: killing every workers with SIGTERM\n");
William Lallemand91723742018-11-06 17:37:14 +0100865 if (exitcode < 0)
866 exitcode = status;
William Lallemand69f9b3b2017-06-01 17:38:54 +0200867 mworker_kill(SIGTERM);
868 }
William Lallemand73b85e72017-06-01 17:38:51 +0200869 } else {
William Lallemand18e52a82018-11-06 17:37:13 +0100870 ha_warning("Former worker #%d (%d) exited with code %d (%s)\n", child->relative_pid, exitpid, status, (status >= 128) ? strsignal(status - 128) : "Exit");
William Lallemand73b85e72017-06-01 17:38:51 +0200871 delete_oldpid(exitpid);
872 }
873 }
William Lallemand18e52a82018-11-06 17:37:13 +0100874 free(child);
875
William Lallemandb3f2be32018-09-11 10:06:18 +0200876 /* do it again to check if it was the last worker */
877 goto restart_wait;
William Lallemand73b85e72017-06-01 17:38:51 +0200878 }
William Lallemandb3f2be32018-09-11 10:06:18 +0200879 /* Better rely on the system than on a list of process to check if it was the last one */
880 else if (exitpid == -1 && errno == ECHILD) {
William Lallemand18e52a82018-11-06 17:37:13 +0100881 ha_warning("All workers exited. Exiting... (%d)\n", (exitcode > 0) ? exitcode : status);
William Lallemandb3f2be32018-09-11 10:06:18 +0200882 atexit_flag = 0;
William Lallemand91723742018-11-06 17:37:14 +0100883 if (exitcode > 0)
884 exit(exitcode);
William Lallemandb3f2be32018-09-11 10:06:18 +0200885 exit(status); /* parent must leave using the latest status code known */
886 }
887
William Lallemand73b85e72017-06-01 17:38:51 +0200888}
889
William Lallemandb3f2be32018-09-11 10:06:18 +0200890static void mworker_loop()
891{
892
893#if defined(USE_SYSTEMD)
894 if (global.tune.options & GTUNE_USE_SYSTEMD)
895 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
896#endif
897
William Lallemandbc193052018-09-11 10:06:26 +0200898 master = 1;
899
William Lallemand0564d412018-11-20 17:36:53 +0100900 signal_unregister(SIGUSR1);
901 signal_unregister(SIGHUP);
902 signal_unregister(SIGQUIT);
903
William Lallemandb3f2be32018-09-11 10:06:18 +0200904 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
905 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
906 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
907 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
908 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
909 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
910
911 mworker_unblock_signals();
912 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100913 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200914
William Lallemandbc193052018-09-11 10:06:26 +0200915 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
916 some SIGCHLD were lost */
917
William Lallemandb3f2be32018-09-11 10:06:18 +0200918 global.nbthread = 1;
919 relative_pid = 1;
920 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100921 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200922
William Lallemand2672eb92018-12-14 15:52:39 +0100923#ifdef USE_THREAD
924 tid_bit = 1;
925 all_threads_mask = 1;
926#endif
927
William Lallemandb3f2be32018-09-11 10:06:18 +0200928 jobs++; /* this is the "master" job, we want to take care of the
929 signals even if there is no listener so the poll loop don't
930 leave */
931
932 fork_poller();
933 run_thread_poll_loop((int []){0});
934}
William Lallemandcb11fd22017-06-01 17:38:52 +0200935
936/*
937 * Reexec the process in failure mode, instead of exiting
938 */
939void reexec_on_failure()
940{
941 if (!atexit_flag)
942 return;
943
944 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
945
Christopher Faulet767a84b2017-11-24 16:50:31 +0100946 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200947 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200948}
William Lallemand73b85e72017-06-01 17:38:51 +0200949
950
951/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200952 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
953 * a signal zero to all subscribers. This means that it's as easy as
954 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200955 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100956static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200957{
958 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200959 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100960 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200961}
962
963/*
964 * upon SIGTTOU, we pause everything
965 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100966static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200967{
968 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100969 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200970}
971
972/*
973 * upon SIGTTIN, let's have a soft stop.
974 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100975static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200976{
Willy Tarreaube58c382011-07-24 18:28:10 +0200977 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200978}
979
980/*
981 * this function dumps every server's state when the process receives SIGHUP.
982 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100983static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200984{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100985 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200986
Christopher Faulet767a84b2017-11-24 16:50:31 +0100987 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200988 while (p) {
989 struct server *s = p->srv;
990
991 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
992 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100993 chunk_printf(&trash,
994 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
995 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200996 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100997 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200998 ha_warning("%s\n", trash.area);
999 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001000 s = s->next;
1001 }
1002
Willy Tarreau5fcc8f12007-09-17 11:27:09 +02001003 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
1004 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01001005 chunk_printf(&trash,
1006 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
1007 p->id,
1008 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 +02001009 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01001010 chunk_printf(&trash,
1011 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
1012 p->id,
1013 (p->srv_bck) ? "is running on backup servers" : "has no server available",
1014 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 +02001015 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +01001016 chunk_printf(&trash,
1017 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
1018 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
1019 p->id, p->srv_act, p->srv_bck,
1020 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 +02001021 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +02001022 ha_warning("%s\n", trash.area);
1023 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001024
1025 p = p->next;
1026 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001027}
1028
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001029static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001030{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001031 /* dump memory usage then free everything possible */
1032 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001033 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001034}
1035
William Lallemande1340412017-12-28 16:09:36 +01001036/*
1037 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1038 * If <fd> < 0, it opens /dev/null and use it to dup
1039 *
1040 * In the case of chrooting, you have to open /dev/null before the chroot, and
1041 * pass the <fd> to this function
1042 */
1043static void stdio_quiet(int fd)
1044{
1045 if (fd < 0)
1046 fd = open("/dev/null", O_RDWR, 0);
1047
1048 if (fd > -1) {
1049 fclose(stdin);
1050 fclose(stdout);
1051 fclose(stderr);
1052
1053 dup2(fd, 0);
1054 dup2(fd, 1);
1055 dup2(fd, 2);
1056 if (fd > 2)
1057 close(fd);
1058 return;
1059 }
1060
1061 ha_alert("Cannot open /dev/null\n");
1062 exit(EXIT_FAILURE);
1063}
1064
1065
Joseph Herlant03420902018-11-15 10:41:50 -08001066/* This function checks if cfg_cfgfiles contains directories.
1067 * If it finds one, it adds all the files (and only files) it contains
1068 * in cfg_cfgfiles in place of the directory (and removes the directory).
1069 * It adds the files in lexical order.
1070 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001071 * It doesn't add files with name starting with '.'
1072 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001073static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001074{
1075 struct wordlist *wl, *wlb;
1076 char *err = NULL;
1077
1078 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1079 struct stat file_stat;
1080 struct dirent **dir_entries = NULL;
1081 int dir_entries_nb;
1082 int dir_entries_it;
1083
1084 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001085 ha_alert("Cannot open configuration file/directory %s : %s\n",
1086 wl->s,
1087 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001088 exit(1);
1089 }
1090
1091 if (!S_ISDIR(file_stat.st_mode))
1092 continue;
1093
1094 /* from this point wl->s is a directory */
1095
1096 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1097 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001098 ha_alert("Cannot open configuration directory %s : %s\n",
1099 wl->s,
1100 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001101 exit(1);
1102 }
1103
1104 /* for each element in the directory wl->s */
1105 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1106 struct dirent *dir_entry = dir_entries[dir_entries_it];
1107 char *filename = NULL;
1108 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1109
1110 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001111 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001112 */
1113 if (dir_entry->d_name[0] == '.' ||
1114 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1115 goto next_dir_entry;
1116
1117 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001118 ha_alert("Cannot load configuration files %s : out of memory.\n",
1119 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001120 exit(1);
1121 }
1122
1123 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001124 ha_alert("Cannot open configuration file %s : %s\n",
1125 wl->s,
1126 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001127 exit(1);
1128 }
1129
1130 /* don't add anything else than regular file in cfg_cfgfiles
1131 * this way we avoid loops
1132 */
1133 if (!S_ISREG(file_stat.st_mode))
1134 goto next_dir_entry;
1135
1136 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001137 ha_alert("Cannot load configuration files %s : %s\n",
1138 filename,
1139 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001140 exit(1);
1141 }
1142
1143next_dir_entry:
1144 free(filename);
1145 free(dir_entry);
1146 }
1147
1148 free(dir_entries);
1149
1150 /* remove the current directory (wl) from cfg_cfgfiles */
1151 free(wl->s);
1152 LIST_DEL(&wl->list);
1153 free(wl);
1154 }
1155
1156 free(err);
1157}
1158
Olivier Houchardf73629d2017-04-05 22:33:04 +02001159static int get_old_sockets(const char *unixsocket)
1160{
1161 char *cmsgbuf = NULL, *tmpbuf = NULL;
1162 int *tmpfd = NULL;
1163 struct sockaddr_un addr;
1164 struct cmsghdr *cmsg;
1165 struct msghdr msghdr;
1166 struct iovec iov;
1167 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001168 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001169 int sock = -1;
1170 int ret = -1;
1171 int ret2 = -1;
1172 int fd_nb;
1173 int got_fd = 0;
1174 int i = 0;
1175 size_t maxoff = 0, curoff = 0;
1176
1177 memset(&msghdr, 0, sizeof(msghdr));
1178 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1179 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001180 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001181 goto out;
1182 }
1183 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1184 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001185 ha_warning("Failed to connect to the old process socket '%s'\n",
1186 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001187 goto out;
1188 }
1189 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1190 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1191 addr.sun_family = PF_UNIX;
1192 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1193 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001194 ha_warning("Failed to connect to the old process socket '%s'\n",
1195 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001196 goto out;
1197 }
Olivier Houchard54740872017-04-06 14:45:14 +02001198 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001199 iov.iov_base = &fd_nb;
1200 iov.iov_len = sizeof(fd_nb);
1201 msghdr.msg_iov = &iov;
1202 msghdr.msg_iovlen = 1;
1203 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1204 /* First, get the number of file descriptors to be received */
1205 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001206 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001207 goto out;
1208 }
1209 if (fd_nb == 0) {
1210 ret = 0;
1211 goto out;
1212 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001213 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001214 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001215 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001216 goto out;
1217 }
1218 tmpfd = malloc(fd_nb * sizeof(int));
1219 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001220 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001221 goto out;
1222 }
1223 msghdr.msg_control = cmsgbuf;
1224 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001225 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001226 do {
1227 int ret3;
1228
1229 iov.iov_base = tmpbuf + curoff;
1230 ret = recvmsg(sock, &msghdr, 0);
1231 if (ret == -1 && errno == EINTR)
1232 continue;
1233 if (ret <= 0)
1234 break;
1235 /* Send an ack to let the sender know we got the sockets
1236 * and it can send some more
1237 */
1238 do {
1239 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1240 } while (ret3 == -1 && errno == EINTR);
1241 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1242 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1243 if (cmsg->cmsg_level == SOL_SOCKET &&
1244 cmsg->cmsg_type == SCM_RIGHTS) {
1245 size_t totlen = cmsg->cmsg_len -
1246 CMSG_LEN(0);
1247 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001248 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001249 goto out;
1250 }
1251 /*
1252 * Be paranoid and use memcpy() to avoid any
1253 * potential alignement issue.
1254 */
1255 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1256 got_fd += totlen / sizeof(int);
1257 }
1258 }
1259 curoff += ret;
1260 } while (got_fd < fd_nb);
1261
1262 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001263 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1264 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001265 goto out;
1266 }
1267 maxoff = curoff;
1268 curoff = 0;
1269 for (i = 0; i < got_fd; i++) {
1270 int fd = tmpfd[i];
1271 socklen_t socklen;
1272 int len;
1273
1274 xfer_sock = calloc(1, sizeof(*xfer_sock));
1275 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001276 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001277 break;
1278 }
1279 xfer_sock->fd = -1;
1280
1281 socklen = sizeof(xfer_sock->addr);
1282 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001283 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001284 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001285 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001286 continue;
1287 }
1288 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001289 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001290 goto out;
1291 }
1292 len = tmpbuf[curoff++];
1293 if (len > 0) {
1294 /* We have a namespace */
1295 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001296 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001297 goto out;
1298 }
1299 xfer_sock->namespace = malloc(len + 1);
1300 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001301 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001302 goto out;
1303 }
1304 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1305 xfer_sock->namespace[len] = 0;
1306 curoff += len;
1307 }
1308 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001309 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001310 goto out;
1311 }
1312 len = tmpbuf[curoff++];
1313 if (len > 0) {
1314 /* We have an interface */
1315 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001316 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001317 goto out;
1318 }
1319 xfer_sock->iface = malloc(len + 1);
1320 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001321 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001322 goto out;
1323 }
1324 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001325 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001326 curoff += len;
1327 }
1328 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001329 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001330 goto out;
1331 }
1332 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1333 sizeof(xfer_sock->options));
1334 curoff += sizeof(xfer_sock->options);
1335
1336 xfer_sock->fd = fd;
1337 if (xfer_sock_list)
1338 xfer_sock_list->prev = xfer_sock;
1339 xfer_sock->next = xfer_sock_list;
1340 xfer_sock->prev = NULL;
1341 xfer_sock_list = xfer_sock;
1342 xfer_sock = NULL;
1343 }
1344
1345 ret2 = 0;
1346out:
1347 /* If we failed midway make sure to close the remaining
1348 * file descriptors
1349 */
1350 if (tmpfd != NULL && i < got_fd) {
1351 for (; i < got_fd; i++) {
1352 close(tmpfd[i]);
1353 }
1354 }
1355 free(tmpbuf);
1356 free(tmpfd);
1357 free(cmsgbuf);
1358 if (sock != -1)
1359 close(sock);
1360 if (xfer_sock) {
1361 free(xfer_sock->namespace);
1362 free(xfer_sock->iface);
1363 if (xfer_sock->fd != -1)
1364 close(xfer_sock->fd);
1365 free(xfer_sock);
1366 }
1367 return (ret2);
1368}
1369
Willy Tarreaubaaee002006-06-26 02:48:02 +02001370/*
William Lallemand73b85e72017-06-01 17:38:51 +02001371 * copy and cleanup the current argv
1372 * Remove the -sf /-st parameters
1373 * Return an allocated copy of argv
1374 */
1375
1376static char **copy_argv(int argc, char **argv)
1377{
1378 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001379 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001380
1381 newargv = calloc(argc + 2, sizeof(char *));
1382 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001383 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001384 return NULL;
1385 }
1386
William Lallemand2bf6d622017-06-20 11:20:23 +02001387 while (i < argc) {
1388 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001389 if (i > 0 && argv[i][0] == '-' &&
1390 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001391 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001392 i++;
1393 while (i < argc && argv[i][0] != '-') {
1394 i++;
1395 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001396 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001397 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001398
1399 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001400 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001401
William Lallemand73b85e72017-06-01 17:38:51 +02001402 return newargv;
1403}
1404
Willy Tarreau5a023f02019-03-01 14:19:31 +01001405/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1406 * setting, and returns it. It may return -1 meaning "unlimited" if some
1407 * unlimited proxies have been found and the global.maxconn value is not yet
1408 * set. It may also return a value greater than maxconn if it's not yet set.
1409 * Note that a value of zero means there is no need for pipes. -1 is never
1410 * returned if global.maxconn is valid.
1411 */
1412static int compute_ideal_maxpipes()
1413{
1414 struct proxy *cur;
1415 int nbfe = 0, nbbe = 0;
1416 int unlimited = 0;
1417 int pipes;
1418 int max;
1419
1420 for (cur = proxies_list; cur; cur = cur->next) {
1421 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1422 if (cur->cap & PR_CAP_FE) {
1423 max = cur->maxconn;
1424 nbfe += max;
1425 if (!max) {
1426 unlimited = 1;
1427 break;
1428 }
1429 }
1430 if (cur->cap & PR_CAP_BE) {
1431 max = cur->fullconn ? cur->fullconn : global.maxconn;
1432 nbbe += max;
1433 if (!max) {
1434 unlimited = 1;
1435 break;
1436 }
1437 }
1438 }
1439 }
1440
1441 pipes = MAX(nbfe, nbbe);
1442 if (global.maxconn) {
1443 if (pipes > global.maxconn || unlimited)
1444 pipes = global.maxconn;
1445 } else if (unlimited) {
1446 pipes = -1;
1447 }
1448
1449 return pipes >= 4 ? pipes / 4 : pipes;
1450}
1451
Willy Tarreauac350932019-03-01 15:43:14 +01001452/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1453 * rlimits and computes an ideal maxconn. It's meant to be called only when
1454 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001455 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1456 * default 100) is returned as it is expected that it will even run on tight
1457 * environments, and will maintain compatibility with previous packages that
1458 * used to rely on this value as the default one. The system will emit a
1459 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001460 */
1461static int compute_ideal_maxconn()
1462{
1463 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1464 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1465 int pipes = compute_ideal_maxpipes();
1466 int remain = rlim_fd_cur_at_boot;
1467 int maxconn;
1468
1469 /* we have to take into account these elements :
1470 * - number of engine_fds, which inflates the number of FD needed per
1471 * connection by this number.
1472 * - number of pipes per connection on average : for the unlimited
1473 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1474 * fixed value of 2*pipes.
1475 * - two FDs per connection
1476 */
1477
1478 /* subtract listeners and checks */
1479 remain -= global.maxsock;
1480
Willy Tarreau3f200852019-03-14 19:13:17 +01001481 /* one epoll_fd/kqueue_fd per thread */
1482 remain -= global.nbthread;
1483
1484 /* one wake-up pipe (2 fd) per thread */
1485 remain -= 2 * global.nbthread;
1486
Willy Tarreauac350932019-03-01 15:43:14 +01001487 /* Fixed pipes values : we only subtract them if they're not larger
1488 * than the remaining FDs because pipes are optional.
1489 */
1490 if (pipes >= 0 && pipes * 2 < remain)
1491 remain -= pipes * 2;
1492
1493 if (pipes < 0) {
1494 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1495 * = maxconn * (2 + 0.5 + engine_fds)
1496 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1497 */
1498 maxconn = 2 * remain / (5 + 2 * engine_fds);
1499 } else {
1500 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1501 * = maxconn * (2 + engine_fds)
1502 */
1503 maxconn = remain / (2 + engine_fds);
1504 }
1505
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001506 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001507}
1508
William Lallemand73b85e72017-06-01 17:38:51 +02001509/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001510 * This function initializes all the necessary variables. It only returns
1511 * if everything is OK. If something fails, it exits.
1512 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001513static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001514{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001515 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001516 char *tmp;
1517 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001518 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001519 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001520 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001521 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001522 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001523 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001524 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001525 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001526
Christopher Faulete3a5e352017-10-24 13:53:54 +02001527 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001528 next_argv = copy_argv(argc, argv);
1529
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001530 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001531 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001532 exit(1);
1533 }
David du Colombier7af46052012-05-16 14:16:48 +02001534
Emeric Brun2b920a12010-09-23 18:30:22 +02001535 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1536 * the string in case of truncation, and at least FreeBSD appears not to do
1537 * it.
1538 */
1539 memset(hostname, 0, sizeof(hostname));
1540 gethostname(hostname, sizeof(hostname) - 1);
1541 memset(localpeer, 0, sizeof(localpeer));
1542 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001543 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001544
Willy Tarreaubaaee002006-06-26 02:48:02 +02001545 /*
1546 * Initialize the previously static variables.
1547 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001548
Willy Tarreau173d9952018-01-26 21:48:23 +01001549 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001550 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001551
Willy Tarreaubaaee002006-06-26 02:48:02 +02001552
1553#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001554 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001555#endif
1556
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001557 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001558 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001559 start_date = now;
1560
Willy Tarreau84310e22014-02-14 11:59:04 +01001561 srandom(now_ms - getpid());
1562
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001563 if (init_acl() != 0)
1564 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001565
Willy Tarreau8280d642009-09-23 23:37:52 +02001566 /* warning, we init buffers later */
Willy Tarreau04f1e2d2018-09-10 18:04:24 +02001567 if (!init_http(&err_msg)) {
1568 ha_alert("%s. Aborting.\n", err_msg);
1569 free(err_msg);
1570 abort();
1571 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001572
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001573 /* Initialise lua. */
1574 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001575
Christopher Fauletff2613e2016-11-09 11:36:17 +01001576 /* Initialize process vars */
1577 vars_init(&global.vars, SCOPE_PROC);
1578
Willy Tarreau43b78992009-01-25 15:42:27 +01001579 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001580#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001581 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001582#endif
1583#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001584 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001585#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001586#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001587 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001588#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001589#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001590 global.tune.options |= GTUNE_USE_SPLICE;
1591#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001592#if defined(USE_GETADDRINFO)
1593 global.tune.options |= GTUNE_USE_GAI;
1594#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001595#if defined(SO_REUSEPORT)
1596 global.tune.options |= GTUNE_USE_REUSEPORT;
1597#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001598
1599 pid = getpid();
1600 progname = *argv;
1601 while ((tmp = strchr(progname, '/')) != NULL)
1602 progname = tmp + 1;
1603
Kevinm48936af2010-12-22 16:08:21 +00001604 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001605 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001606
Willy Tarreaubaaee002006-06-26 02:48:02 +02001607 argc--; argv++;
1608 while (argc > 0) {
1609 char *flag;
1610
1611 if (**argv == '-') {
1612 flag = *argv+1;
1613
1614 /* 1 arg */
1615 if (*flag == 'v') {
1616 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001617 if (flag[1] == 'v') /* -vv */
1618 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001619 exit(0);
1620 }
1621#if defined(ENABLE_EPOLL)
1622 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001623 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001624#endif
1625#if defined(ENABLE_POLL)
1626 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001627 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001628#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +02001629#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001630 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001631 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001632#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001633#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001634 else if (*flag == 'd' && flag[1] == 'S')
1635 global.tune.options &= ~GTUNE_USE_SPLICE;
1636#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001637#if defined(USE_GETADDRINFO)
1638 else if (*flag == 'd' && flag[1] == 'G')
1639 global.tune.options &= ~GTUNE_USE_GAI;
1640#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001641#if defined(SO_REUSEPORT)
1642 else if (*flag == 'd' && flag[1] == 'R')
1643 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1644#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001645 else if (*flag == 'd' && flag[1] == 'V')
1646 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001647 else if (*flag == 'V')
1648 arg_mode |= MODE_VERBOSE;
1649 else if (*flag == 'd' && flag[1] == 'b')
1650 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001651 else if (*flag == 'd' && flag[1] == 'M')
1652 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001653 else if (*flag == 'd' && flag[1] == 'r')
1654 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001655 else if (*flag == 'd')
1656 arg_mode |= MODE_DEBUG;
1657 else if (*flag == 'c')
1658 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001659 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001660 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001661 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001662 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001663#if defined(USE_SYSTEMD)
1664 global.tune.options |= GTUNE_USE_SYSTEMD;
1665#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001666 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 +01001667 usage(progname);
1668#endif
1669 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001670 else if (*flag == 'W')
1671 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001672 else if (*flag == 'q')
1673 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001674 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001675 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001676 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001677 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001678 }
William Lallemand4fc09692017-06-19 16:37:19 +02001679 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001680 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001681 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001682
Olivier Houchardf73629d2017-04-05 22:33:04 +02001683 argv++;
1684 argc--;
1685 }
William Lallemande7361152018-10-26 14:47:36 +02001686 else if (*flag == 'S') {
1687 struct wordlist *c;
1688
1689 if (argc <= 1 || argv[1][0] == '-') {
1690 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1691 usage(progname);
1692 }
1693 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1694 ha_alert("Cannot allocate memory\n");
1695 exit(EXIT_FAILURE);
1696 }
1697 LIST_ADD(&mworker_cli_conf, &c->list);
1698
1699 argv++;
1700 argc--;
1701 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001702 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1703 /* list of pids to finish ('f') or terminate ('t') */
1704
1705 if (flag[1] == 'f')
1706 oldpids_sig = SIGUSR1; /* finish then exit */
1707 else
1708 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001709 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001710 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001711 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1712 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001713 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001714 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001715 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001716 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001717 errno = 0;
1718 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1719 if (errno) {
1720 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1721 flag,
1722 *argv, strerror(errno));
1723 exit(1);
1724 } else if (endptr && strlen(endptr)) {
1725 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001726 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001727 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1728 flag, endptr);
1729 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001730 }
Chris Lane236062f2018-02-05 23:15:44 +00001731 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001732 if (oldpids[nb_oldpids] <= 0)
1733 usage(progname);
1734 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001735 }
1736 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001737 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1738 /* now that's a cfgfile list */
1739 argv++; argc--;
1740 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001741 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001742 ha_alert("Cannot load configuration file/directory %s : %s\n",
1743 *argv,
1744 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001745 exit(1);
1746 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001747 argv++; argc--;
1748 }
1749 break;
1750 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001751 else { /* >=2 args */
1752 argv++; argc--;
1753 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001754 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001755
1756 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001757 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001758 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001759 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001760 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001761 case 'L' :
1762 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1763 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1764 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001765 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001766 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001767 ha_alert("Cannot load configuration file/directory %s : %s\n",
1768 *argv,
1769 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001770 exit(1);
1771 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001772 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001773 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001774 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001775 }
1776 }
1777 }
1778 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001779 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001780 argv++; argc--;
1781 }
1782
Christopher Faulete3a5e352017-10-24 13:53:54 +02001783 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1784 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001785
William Lallemand944e6192018-11-21 15:48:31 +01001786 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001787 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001788 global.mode |= MODE_MWORKER_WAIT;
1789 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001790 }
1791
1792 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1793 atexit_flag = 1;
1794 atexit(reexec_on_failure);
1795 }
1796
Willy Tarreau576132e2011-09-10 19:26:56 +02001797 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001798 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001799 exit(1);
1800 }
1801
Willy Tarreaubaaee002006-06-26 02:48:02 +02001802 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001803
1804 init_default_instance();
1805
William Lallemand944e6192018-11-21 15:48:31 +01001806 /* in wait mode, we don't try to read the configuration files */
1807 if (!(global.mode & MODE_MWORKER_WAIT)) {
Willy Tarreauc4382422009-12-06 13:10:44 +01001808
William Lallemand944e6192018-11-21 15:48:31 +01001809 /* handle cfgfiles that are actually directories */
1810 cfgfiles_expand_directories();
1811
1812 if (LIST_ISEMPTY(&cfg_cfgfiles))
1813 usage(progname);
1814
1815
1816 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1817 int ret;
1818
1819 ret = readcfgfile(wl->s);
1820 if (ret == -1) {
1821 ha_alert("Could not open configuration file %s : %s\n",
1822 wl->s, strerror(errno));
1823 exit(1);
1824 }
1825 if (ret & (ERR_ABORT|ERR_FATAL))
1826 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1827 err_code |= ret;
1828 if (err_code & ERR_ABORT)
1829 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001830 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001831
William Lallemand944e6192018-11-21 15:48:31 +01001832 /* do not try to resolve arguments nor to spot inconsistencies when
1833 * the configuration contains fatal errors caused by files not found
1834 * or failed memory allocations.
1835 */
1836 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1837 ha_alert("Fatal errors found in configuration.\n");
1838 exit(1);
1839 }
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001840 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001841 if (global.mode & MODE_MWORKER) {
1842 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001843 struct mworker_proc *tmproc;
1844
1845 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1846
1847 tmproc = malloc(sizeof(*tmproc));
1848 if (!tmproc) {
1849 ha_alert("Cannot allocate process structures.\n");
1850 exit(EXIT_FAILURE);
1851 }
1852 tmproc->type = 'm'; /* master */
1853 tmproc->reloads = 0;
1854 tmproc->relative_pid = 0;
1855 tmproc->pid = pid;
1856 tmproc->timestamp = start_date.tv_sec;
1857 tmproc->ipc_fd[0] = -1;
1858 tmproc->ipc_fd[1] = -1;
1859
1860 proc_self = tmproc;
1861
1862 LIST_ADDQ(&proc_list, &tmproc->list);
1863 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001864
1865 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001866
1867 tmproc = malloc(sizeof(*tmproc));
1868 if (!tmproc) {
1869 ha_alert("Cannot allocate process structures.\n");
1870 exit(EXIT_FAILURE);
1871 }
1872
William Lallemand16dd1b32018-11-19 18:46:18 +01001873 tmproc->type = 'w'; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001874 tmproc->pid = -1;
1875 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001876 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001877 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001878 tmproc->ipc_fd[0] = -1;
1879 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001880
1881 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1882 exit(EXIT_FAILURE);
1883 }
1884
1885 LIST_ADDQ(&proc_list, &tmproc->list);
1886 }
William Lallemand944e6192018-11-21 15:48:31 +01001887 }
1888 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1889 struct wordlist *it, *c;
1890
William Lallemand1b663612018-10-26 14:47:33 +02001891 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001892
William Lallemande7361152018-10-26 14:47:36 +02001893
William Lallemand550db6d2018-11-06 17:37:12 +01001894 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001895
William Lallemand550db6d2018-11-06 17:37:12 +01001896 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001897 ha_alert("Can't create the master's CLI.\n");
1898 exit(EXIT_FAILURE);
1899 }
William Lallemande7361152018-10-26 14:47:36 +02001900
William Lallemand550db6d2018-11-06 17:37:12 +01001901 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1902
1903 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1904 ha_alert("Can't create the master's CLI.\n");
1905 exit(EXIT_FAILURE);
1906 }
1907 LIST_DEL(&c->list);
1908 free(c->s);
1909 free(c);
1910 }
1911 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001912 }
1913
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +01001914 pattern_finalize_config();
1915
Willy Tarreaubb925012009-07-23 13:36:36 +02001916 err_code |= check_config_validity();
1917 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001918 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001919 exit(1);
1920 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001921
Willy Tarreau70060452015-12-14 12:46:07 +01001922 /* recompute the amount of per-process memory depending on nbproc and
1923 * the shared SSL cache size (allowed to exist in all processes).
1924 */
1925 if (global.rlimit_memmax_all) {
1926#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1927 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1928
1929 global.rlimit_memmax =
1930 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1931 ssl_cache_bytes) / global.nbproc +
1932 ssl_cache_bytes + 1048575LL) / 1048576LL;
1933#else
1934 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1935#endif
1936 }
1937
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001938#ifdef CONFIG_HAP_NS
1939 err_code |= netns_init();
1940 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001941 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001942 exit(1);
1943 }
1944#endif
1945
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001946 /* Apply server states */
1947 apply_server_state();
1948
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001949 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001950 srv_compute_all_admin_states(px);
1951
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001952 /* Apply servers' configured address */
1953 err_code |= srv_init_addr();
1954 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001955 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001956 exit(1);
1957 }
1958
Willy Tarreaubaaee002006-06-26 02:48:02 +02001959 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001960 struct peers *pr;
1961 struct proxy *px;
1962
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001963 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001964 if (pr->peers_fe)
1965 break;
1966
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001967 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001968 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001969 break;
1970
1971 if (pr || px) {
1972 /* At least one peer or one listener has been found */
1973 qfprintf(stdout, "Configuration file is valid\n");
1974 exit(0);
1975 }
1976 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1977 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001978 }
1979
Emeric Brunc60def82017-09-27 14:59:38 +02001980 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001981 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001982 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001983 exit(1);
1984 }
1985 /* very simple initialization, users will queue the task if needed */
1986 global_listener_queue_task->context = NULL; /* not even a context! */
1987 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001988
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001989 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001990 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001991
Willy Tarreaue6945732016-12-21 19:57:00 +01001992 list_for_each_entry(pcf, &post_check_list, list) {
1993 err_code |= pcf->fct();
1994 if (err_code & (ERR_ABORT|ERR_FATAL))
1995 exit(1);
1996 }
1997
Willy Tarreaubaaee002006-06-26 02:48:02 +02001998 if (cfg_maxconn > 0)
1999 global.maxconn = cfg_maxconn;
2000
Willy Tarreau8d687d82019-03-01 09:39:42 +01002001 if (global.stats_fe)
2002 global.maxsock += global.stats_fe->maxconn;
2003
2004 if (cfg_peers) {
2005 /* peers also need to bypass global maxconn */
2006 struct peers *p = cfg_peers;
2007
2008 for (p = cfg_peers; p; p = p->next)
2009 if (p->peers_fe)
2010 global.maxsock += p->peers_fe->maxconn;
2011 }
2012
Willy Tarreaubaaee002006-06-26 02:48:02 +02002013 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02002014 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002015 global.pidfile = strdup(cfg_pidfile);
2016 }
2017
Willy Tarreaud0256482015-01-15 21:45:22 +01002018 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01002019 * It's a bit tricky. Maxconn defaults to the pre-computed value based
2020 * on rlim_fd_cur and the number of FDs in use due to the configuration,
2021 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2022 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002023 *
2024 * If memmax is set, then it depends on which values are set. If
2025 * maxsslconn is set, we use memmax to determine how many cleartext
2026 * connections may be added, and set maxconn to the sum of the two.
2027 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2028 * the remaining amount of memory between memmax and the cleartext
2029 * connections. If neither are set, then it is considered that all
2030 * connections are SSL-capable, and maxconn is computed based on this,
2031 * then maxsslconn accordingly. We need to know if SSL is used on the
2032 * frontends, backends, or both, because when it's used on both sides,
2033 * we need twice the value for maxsslconn, but we only count the
2034 * handshake once since it is not performed on the two sides at the
2035 * same time (frontend-side is terminated before backend-side begins).
2036 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002037 * ssl_handshake_cost during its initialization. In any case, if
2038 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2039 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002040 */
Willy Tarreauac350932019-03-01 15:43:14 +01002041 ideal_maxconn = compute_ideal_maxconn();
2042
Willy Tarreaud0256482015-01-15 21:45:22 +01002043 if (!global.rlimit_memmax) {
2044 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002045 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002046 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2047 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2048 }
2049 }
2050#ifdef USE_OPENSSL
2051 else if (!global.maxconn && !global.maxsslconn &&
2052 (global.ssl_used_frontend || global.ssl_used_backend)) {
2053 /* memmax is set, compute everything automatically. Here we want
2054 * to ensure that all SSL connections will be served. We take
2055 * care of the number of sides where SSL is used, and consider
2056 * the worst case : SSL used on both sides and doing a handshake
2057 * simultaneously. Note that we can't have more than maxconn
2058 * handshakes at a time by definition, so for the worst case of
2059 * two SSL conns per connection, we count a single handshake.
2060 */
2061 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2062 int64_t mem = global.rlimit_memmax * 1048576ULL;
2063
2064 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2065 mem -= global.maxzlibmem;
2066 mem = mem * MEM_USABLE_RATIO;
2067
2068 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02002069 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01002070 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2071 global.ssl_handshake_max_cost); // 1 handshake per connection max
2072
Willy Tarreauac350932019-03-01 15:43:14 +01002073 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002074 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002075#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002076 if (global.maxconn > SYSTEM_MAXCONN)
2077 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002078#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002079 global.maxsslconn = sides * global.maxconn;
2080 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2081 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2082 global.maxconn, global.maxsslconn);
2083 }
2084 else if (!global.maxsslconn &&
2085 (global.ssl_used_frontend || global.ssl_used_backend)) {
2086 /* memmax and maxconn are known, compute maxsslconn automatically.
2087 * maxsslconn being forced, we don't know how many of it will be
2088 * on each side if both sides are being used. The worst case is
2089 * when all connections use only one SSL instance because
2090 * handshakes may be on two sides at the same time.
2091 */
2092 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2093 int64_t mem = global.rlimit_memmax * 1048576ULL;
2094 int64_t sslmem;
2095
2096 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2097 mem -= global.maxzlibmem;
2098 mem = mem * MEM_USABLE_RATIO;
2099
Willy Tarreau87b09662015-04-03 00:22:06 +02002100 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002101 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2102 global.maxsslconn = round_2dig(global.maxsslconn);
2103
2104 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002105 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2106 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2107 "without SSL is %d, but %d was found and SSL is in use.\n",
2108 global.rlimit_memmax,
2109 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2110 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002111 exit(1);
2112 }
2113
2114 if (global.maxsslconn > sides * global.maxconn)
2115 global.maxsslconn = sides * global.maxconn;
2116
2117 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2118 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2119 }
2120#endif
2121 else if (!global.maxconn) {
2122 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2123 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2124 int64_t mem = global.rlimit_memmax * 1048576ULL;
2125 int64_t clearmem;
2126
2127 if (global.ssl_used_frontend || global.ssl_used_backend)
2128 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2129
2130 mem -= global.maxzlibmem;
2131 mem = mem * MEM_USABLE_RATIO;
2132
2133 clearmem = mem;
2134 if (sides)
2135 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2136
Willy Tarreau87b09662015-04-03 00:22:06 +02002137 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01002138 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002139 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002140#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002141 if (global.maxconn > SYSTEM_MAXCONN)
2142 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002143#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002144
2145 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002146 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2147 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2148 "is %d, but %d was found.\n",
2149 global.rlimit_memmax,
2150 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
2151 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002152 exit(1);
2153 }
2154
2155 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2156 if (sides && global.maxsslconn > sides * global.maxconn) {
2157 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2158 "to be limited to %d. Better reduce global.maxsslconn to get more "
2159 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2160 }
2161 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2162 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002163 }
2164
Willy Tarreau5a023f02019-03-01 14:19:31 +01002165 if (!global.maxpipes)
2166 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002167
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002168 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002169 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002170 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002171 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2172 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2173
Emeric Brunece0c332017-12-06 13:51:49 +01002174 /* compute fd used by async engines */
2175 if (global.ssl_used_async_engines) {
2176 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2177 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2178 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002179
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002180 proxy_adjust_all_maxconn();
2181
Willy Tarreau1db37712007-06-03 17:16:49 +02002182 if (global.tune.maxpollevents <= 0)
2183 global.tune.maxpollevents = MAX_POLL_EVENTS;
2184
Olivier Houchard1599b802018-05-24 18:59:04 +02002185 if (global.tune.runqueue_depth <= 0)
2186 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2187
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002188 if (global.tune.recv_enough == 0)
2189 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2190
Willy Tarreau27097842015-09-28 13:53:23 +02002191 if (global.tune.maxrewrite < 0)
2192 global.tune.maxrewrite = MAXREWRITE;
2193
Willy Tarreau27a674e2009-08-17 07:23:33 +02002194 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2195 global.tune.maxrewrite = global.tune.bufsize / 2;
2196
Willy Tarreaubaaee002006-06-26 02:48:02 +02002197 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2198 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002199 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002200 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2201 }
2202
William Lallemand095ba4c2017-06-01 17:38:50 +02002203 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002204 /* command line daemon mode inhibits foreground and debug modes mode */
2205 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002206 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002207 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002208
2209 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002210
William Lallemand095ba4c2017-06-01 17:38:50 +02002211 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002212 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002213 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002214 }
2215
William Lallemand095ba4c2017-06-01 17:38:50 +02002216 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002217 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002218 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 +02002219 global.nbproc = 1;
2220 }
2221
2222 if (global.nbproc < 1)
2223 global.nbproc = 1;
2224
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002225 if (global.nbthread < 1)
2226 global.nbthread = 1;
2227
Christopher Faulet3ef26392017-08-29 16:46:57 +02002228 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002229 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002230 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002231 exit(1);
2232 }
2233
Christopher Faulet96d44832017-11-14 22:02:30 +01002234 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002235 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002236 exit(1);
2237 }
2238
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002239 /*
2240 * Note: we could register external pollers here.
2241 * Built-in pollers have been registered before main().
2242 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002243
Willy Tarreau43b78992009-01-25 15:42:27 +01002244 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002245 disable_poller("kqueue");
2246
Willy Tarreau43b78992009-01-25 15:42:27 +01002247 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002248 disable_poller("epoll");
2249
Willy Tarreau43b78992009-01-25 15:42:27 +01002250 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002251 disable_poller("poll");
2252
Willy Tarreau43b78992009-01-25 15:42:27 +01002253 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002254 disable_poller("select");
2255
2256 /* Note: we could disable any poller by name here */
2257
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002258 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002259 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002260 fprintf(stderr, "\n");
2261 list_filters(stderr);
2262 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002263
Willy Tarreau4f60f162007-04-08 16:39:58 +02002264 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002265 ha_alert("No polling mechanism available.\n"
2266 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2267 " is too low on this platform to support maxconn and the number of listeners\n"
2268 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2269 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2270 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2271 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2272 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2273 " check build settings using 'haproxy -vv'.\n\n",
2274 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002275 exit(1);
2276 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002277 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2278 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002279 }
2280
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002281 if (!global.node)
2282 global.node = strdup(hostname);
2283
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002284 if (!hlua_post_init())
2285 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002286
Maxime de Roucy0f503922016-05-13 23:52:55 +02002287 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002288}
2289
Simon Horman6fb82592011-07-15 13:14:11 +09002290static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002291{
Simon Hormanac821422011-07-15 13:14:09 +09002292 struct acl_term_suite *suite, *suiteb;
2293 struct acl_term *term, *termb;
2294
Simon Horman6fb82592011-07-15 13:14:11 +09002295 if (!cond)
2296 return;
2297
2298 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2299 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2300 LIST_DEL(&term->list);
2301 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002302 }
Simon Horman6fb82592011-07-15 13:14:11 +09002303 LIST_DEL(&suite->list);
2304 free(suite);
2305 }
2306
2307 free(cond);
2308}
2309
2310static void deinit_tcp_rules(struct list *rules)
2311{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002312 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002313
2314 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002315 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002316 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002317 free(trule);
2318 }
2319}
2320
Simon Horman6fb82592011-07-15 13:14:11 +09002321static void deinit_stick_rules(struct list *rules)
2322{
2323 struct sticking_rule *rule, *ruleb;
2324
2325 list_for_each_entry_safe(rule, ruleb, rules, list) {
2326 LIST_DEL(&rule->list);
2327 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002328 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002329 free(rule);
2330 }
2331}
2332
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002333void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002334{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002335 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002336 struct cap_hdr *h,*h_next;
2337 struct server *s,*s_next;
2338 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002339 struct acl_cond *cond, *condb;
2340 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002341 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002342 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002343 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002344 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002345 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01002346 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002347 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002348 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002349 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002350 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002351 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002352 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002353 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002354
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002355 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002356 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002357 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002358 free(p->id);
2359 free(p->check_req);
2360 free(p->cookie_name);
2361 free(p->cookie_domain);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002362 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002363 free(p->capture_name);
2364 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002365 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002366 if (p->conf.logformat_string != default_http_log_format &&
2367 p->conf.logformat_string != default_tcp_log_format &&
2368 p->conf.logformat_string != clf_http_log_format)
2369 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002370
Willy Tarreau62a61232013-04-12 18:13:46 +02002371 free(p->conf.lfs_file);
2372 free(p->conf.uniqueid_format_string);
2373 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002374 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2375 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002376
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002377 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2378 free(p->conf.logformat_sd_string);
2379 free(p->conf.lfsd_file);
2380
Willy Tarreaua534fea2008-08-03 12:19:50 +02002381 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002382 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002383
Willy Tarreauf4f04122010-01-28 18:10:50 +01002384 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
2385 LIST_DEL(&cwl->list);
2386 free(cwl->s);
2387 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002388 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002389
Willy Tarreauf4f04122010-01-28 18:10:50 +01002390 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
2391 LIST_DEL(&cwl->list);
2392 free(cwl->s);
2393 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002394 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002395
Willy Tarreaub80c2302007-11-30 20:51:32 +01002396 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2397 LIST_DEL(&cond->list);
2398 prune_acl_cond(cond);
2399 free(cond);
2400 }
2401
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002402 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002403 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002404 regex_free(exp->preg);
2405 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002406 }
2407
Willy Tarreau98d04852015-05-26 12:18:29 +02002408 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002409 expb = exp;
2410 exp = exp->next;
2411 free(expb);
2412 }
2413
2414 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002415 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002416 regex_free(exp->preg);
2417 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002418 }
2419
Willy Tarreau98d04852015-05-26 12:18:29 +02002420 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002421 expb = exp;
2422 exp = exp->next;
2423 free(expb);
2424 }
2425
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002426 /* build a list of unique uri_auths */
2427 if (!ua)
2428 ua = p->uri_auth;
2429 else {
2430 /* check if p->uri_auth is unique */
2431 for (uap = ua; uap; uap=uap->next)
2432 if (uap == p->uri_auth)
2433 break;
2434
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002435 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002436 /* add it, if it is */
2437 p->uri_auth->next = ua;
2438 ua = p->uri_auth;
2439 }
2440 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002441
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002442 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2443 LIST_DEL(&acl->list);
2444 prune_acl(acl);
2445 free(acl);
2446 }
2447
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002448 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2449 LIST_DEL(&srule->list);
2450 prune_acl_cond(srule->cond);
2451 free(srule->cond);
2452 free(srule);
2453 }
2454
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002455 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2456 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002457 if (rule->cond) {
2458 prune_acl_cond(rule->cond);
2459 free(rule->cond);
Thierry FOURNIER / OZON.IO4ed1c952016-11-24 23:57:54 +01002460 free(rule->file);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002461 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002462 free(rule);
2463 }
2464
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002465 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2466 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002467 if (rdr->cond) {
2468 prune_acl_cond(rdr->cond);
2469 free(rdr->cond);
2470 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002471 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002472 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2473 LIST_DEL(&lf->list);
2474 free(lf);
2475 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002476 free(rdr);
2477 }
2478
William Lallemand0f99e342011-10-12 17:50:54 +02002479 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2480 LIST_DEL(&log->list);
2481 free(log);
2482 }
2483
William Lallemand723b73a2012-02-08 16:37:49 +01002484 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2485 LIST_DEL(&lf->list);
2486 free(lf);
2487 }
2488
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002489 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2490 LIST_DEL(&lf->list);
2491 free(lf);
2492 }
2493
Simon Hormanac821422011-07-15 13:14:09 +09002494 deinit_tcp_rules(&p->tcp_req.inspect_rules);
Kevin Zhu13ebef72019-01-30 16:01:21 +08002495 deinit_tcp_rules(&p->tcp_rep.inspect_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002496 deinit_tcp_rules(&p->tcp_req.l4_rules);
2497
Simon Horman6fb82592011-07-15 13:14:11 +09002498 deinit_stick_rules(&p->storersp_rules);
2499 deinit_stick_rules(&p->sticking_rules);
2500
Willy Tarreaubaaee002006-06-26 02:48:02 +02002501 h = p->req_cap;
2502 while (h) {
2503 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002504 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002505 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002506 free(h);
2507 h = h_next;
2508 }/* end while(h) */
2509
2510 h = p->rsp_cap;
2511 while (h) {
2512 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002513 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002514 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002515 free(h);
2516 h = h_next;
2517 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002518
Willy Tarreaubaaee002006-06-26 02:48:02 +02002519 s = p->srv;
2520 while (s) {
2521 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002522
Willy Tarreau5b3a2022012-09-28 15:01:02 +02002523 if (s->check.task) {
2524 task_delete(s->check.task);
2525 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002526 }
Simon Hormand60d6912013-11-25 10:46:36 +09002527 if (s->agent.task) {
2528 task_delete(s->agent.task);
2529 task_free(s->agent.task);
2530 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002531
Willy Tarreau2e993902011-10-31 11:53:20 +01002532 if (s->warmup) {
2533 task_delete(s->warmup);
2534 task_free(s->warmup);
2535 }
2536
Willy Tarreaua534fea2008-08-03 12:19:50 +02002537 free(s->id);
2538 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002539 free(s->check.bi.area);
2540 free(s->check.bo.area);
2541 free(s->agent.bi.area);
2542 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002543 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002544 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002545 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002546 free(s->idle_conns);
2547 free(s->priv_conns);
2548 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002549 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002550 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002551
2552 if (s->use_ssl || s->check.use_ssl) {
2553 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2554 xprt_get(XPRT_SSL)->destroy_srv(s);
2555 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002556 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002557 free(s);
2558 s = s_next;
2559 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002560
Willy Tarreau4348fad2012-09-20 16:48:07 +02002561 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002562 /*
2563 * Zombie proxy, the listener just pretend to be up
2564 * because they still hold an opened fd.
2565 * Close it and give the listener its real state.
2566 */
2567 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2568 close(l->fd);
2569 l->state = LI_INIT;
2570 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002571 unbind_listener(l);
2572 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002573 LIST_DEL(&l->by_fe);
2574 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002575 free(l->name);
2576 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002577 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002578 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002579
Willy Tarreau4348fad2012-09-20 16:48:07 +02002580 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002581 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002582 if (bind_conf->xprt->destroy_bind_conf)
2583 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002584 free(bind_conf->file);
2585 free(bind_conf->arg);
2586 LIST_DEL(&bind_conf->by_fe);
2587 free(bind_conf);
2588 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002589
Christopher Fauletd7c91962015-04-30 11:48:27 +02002590 flt_deinit(p);
2591
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002592 free(p->desc);
2593 free(p->fwdfor_hdr_name);
2594
Willy Tarreauff011f22011-01-06 17:51:27 +01002595 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002596 free_http_res_rules(&p->http_res_rules);
Willy Tarreau1f89b182017-11-22 16:53:53 +01002597 task_free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002598
Willy Tarreaubafbe012017-11-24 17:34:44 +01002599 pool_destroy(p->req_cap_pool);
2600 pool_destroy(p->rsp_cap_pool);
2601 pool_destroy(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002602
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002603 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002604 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002605 HA_SPIN_DESTROY(&p0->lbprm.lock);
2606 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002607 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002608 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002609
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002610 while (ua) {
2611 uap = ua;
2612 ua = ua->next;
2613
Willy Tarreaua534fea2008-08-03 12:19:50 +02002614 free(uap->uri_prefix);
2615 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002616 free(uap->node);
2617 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002618
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002619 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002620 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002621
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002622 free(uap);
2623 }
2624
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002625 userlist_free(userlist);
2626
David Carlier834cb2e2015-09-25 12:02:25 +01002627 cfg_unregister_sections();
2628
Christopher Faulet0132d062017-07-26 15:33:35 +02002629 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002630
Willy Tarreaudd815982007-10-16 12:25:14 +02002631 protocol_unbind_all();
2632
Willy Tarreau05554e62016-12-21 20:46:26 +01002633 list_for_each_entry(pdf, &post_deinit_list, list)
2634 pdf->fct();
2635
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002636 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002637 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002638 free(global.chroot); global.chroot = NULL;
2639 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002640 free(global.node); global.node = NULL;
2641 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002642 free(oldpids); oldpids = NULL;
Willy Tarreau1f89b182017-11-22 16:53:53 +01002643 task_free(global_listener_queue_task); global_listener_queue_task = NULL;
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002644 task_free(idle_conn_task);
2645 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002646
William Lallemand0f99e342011-10-12 17:50:54 +02002647 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2648 LIST_DEL(&log->list);
2649 free(log);
2650 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002651 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002652 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002653 LIST_DEL(&wl->list);
2654 free(wl);
2655 }
2656
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002657 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2658 if (bol->must_free)
2659 free((void *)bol->str);
2660 LIST_DEL(&bol->list);
2661 free(bol);
2662 }
2663
Christopher Fauletff2613e2016-11-09 11:36:17 +01002664 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002665 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002666 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002667} /* end deinit() */
2668
William Lallemand72160322018-11-06 17:37:16 +01002669
2670
2671/* This is a wrapper for the sockpair FD, It tests if the socket received an
2672 * EOF, if not, it calls listener_accept */
2673void mworker_accept_wrapper(int fd)
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002674{
2675 char c;
William Lallemand72160322018-11-06 17:37:16 +01002676 int ret;
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002677
William Lallemand72160322018-11-06 17:37:16 +01002678 while (1) {
2679 ret = recv(fd, &c, 1, MSG_PEEK);
2680 if (ret == -1) {
2681 if (errno == EINTR)
2682 continue;
2683 if (errno == EAGAIN) {
2684 fd_cant_recv(fd);
2685 return;
2686 }
2687 break;
2688 } else if (ret > 0) {
2689 listener_accept(fd);
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002690 return;
William Lallemand72160322018-11-06 17:37:16 +01002691 } else if (ret == 0) {
2692 /* At this step the master is down before
2693 * this worker perform a 'normal' exit.
2694 * So we want to exit with an error but
2695 * other threads could currently process
2696 * some stuff so we can't perform a clean
2697 * deinit().
2698 */
2699 exit(EXIT_FAILURE);
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002700 }
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002701 }
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002702 return;
2703}
2704
William Lallemand72160322018-11-06 17:37:16 +01002705/*
William Lallemand72160322018-11-06 17:37:16 +01002706 * This function register the accept wrapper for the sockpair of the master worker
2707 */
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002708void mworker_pipe_register()
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002709{
William Lallemand72160322018-11-06 17:37:16 +01002710 /* The iocb should be already initialized with listener_accept */
William Lallemanda90cacf2018-11-07 08:38:32 +01002711 if (fdtab[proc_self->ipc_fd[1]].iocb == mworker_accept_wrapper)
2712 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002713
William Lallemandbc193052018-09-11 10:06:26 +02002714 fcntl(proc_self->ipc_fd[1], F_SETFL, O_NONBLOCK);
Emeric Brunc8c0ed92018-10-11 15:27:07 +02002715 /* In multi-tread, we need only one thread to process
2716 * events on the pipe with master
2717 */
William Lallemande260e0d2018-11-08 12:00:14 +01002718 fd_insert(proc_self->ipc_fd[1], fdtab[proc_self->ipc_fd[1]].owner, mworker_accept_wrapper, 1);
William Lallemandbc193052018-09-11 10:06:26 +02002719 fd_want_recv(proc_self->ipc_fd[1]);
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002720}
Christopher Fauletdc628a32017-10-19 11:59:44 +02002721
Willy Tarreau918ff602011-07-25 16:33:49 +02002722/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002723static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002724{
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002725 int next, exp;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002726
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002727 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002728 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002729 /* Process a few tasks */
2730 process_runnable_tasks();
2731
William Lallemand1aab50b2018-06-07 09:46:01 +02002732 /* check if we caught some signals and process them in the
2733 first thread */
2734 if (tid == 0)
2735 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002736
Willy Tarreau58b458d2008-06-29 22:40:23 +02002737 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002738 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002739
Willy Tarreau85c459d2018-08-02 10:54:31 +02002740 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002741 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002742 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002743
Willy Tarreau10146c92015-04-13 20:44:19 +02002744 /* expire immediately if events are pending */
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002745 exp = now_ms;
Christopher Faulet32467fe2018-01-15 12:16:34 +01002746 if (fd_cache_mask & tid_bit)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002747 activity[tid].wake_cache++;
2748 else if (active_tasks_mask & tid_bit)
2749 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002750 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002751 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002752 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002753 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2754 __ha_barrier_atomic_store();
Olivier Houchard79321b92018-07-26 17:55:11 +02002755 if (active_tasks_mask & tid_bit) {
2756 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002757 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002758 } else
2759 exp = next;
2760 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002761
Willy Tarreau58b458d2008-06-29 22:40:23 +02002762 /* The poller will ensure it returns around <next> */
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002763 cur_poller.poll(&cur_poller, exp);
Olivier Houchard79321b92018-07-26 17:55:11 +02002764 if (sleeping_thread_mask & tid_bit)
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002765 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002766 fd_process_cached_events();
Emeric Brun64cc49c2017-10-03 14:46:45 +02002767
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002768 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002769 }
2770}
2771
Christopher Faulet1d17c102017-08-29 15:38:48 +02002772static void *run_thread_poll_loop(void *data)
2773{
2774 struct per_thread_init_fct *ptif;
2775 struct per_thread_deinit_fct *ptdf;
Christopher Fauletda18b9d2018-01-25 16:10:16 +01002776 __decl_hathreads(static HA_SPINLOCK_T start_lock);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002777
Willy Tarreau0c026f42018-08-01 19:12:20 +02002778 ha_set_tid(*((unsigned int *)data));
Christopher Faulet1d17c102017-08-29 15:38:48 +02002779 tv_update_date(-1,-1);
2780
2781 list_for_each_entry(ptif, &per_thread_init_list, list) {
2782 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002783 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002784 exit(1);
2785 }
2786 }
2787
William Lallemandbc193052018-09-11 10:06:26 +02002788 if ((global.mode & MODE_MWORKER) && master == 0) {
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002789 HA_SPIN_LOCK(START_LOCK, &start_lock);
2790 mworker_pipe_register();
2791 HA_SPIN_UNLOCK(START_LOCK, &start_lock);
2792 }
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002793
2794 protocol_enable_all();
Christopher Faulet1d17c102017-08-29 15:38:48 +02002795 run_poll_loop();
2796
2797 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2798 ptdf->fct();
2799
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002800#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002801 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002802 if (tid > 0)
2803 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002804#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002805 return NULL;
2806}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002807
Willy Tarreaue9b26022011-08-01 20:57:55 +02002808/* This is the global management task for listeners. It enables listeners waiting
2809 * for global resources when there are enough free resource, or at least once in
2810 * a while. It is designed to be called as a task.
2811 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002812static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002813{
2814 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002815 /* queue is empty, nothing to do */
2816 if (LIST_ISEMPTY(&global_listener_queue))
2817 goto out;
2818
2819 /* If there are still too many concurrent connections, let's wait for
2820 * some of them to go away. We don't need to re-arm the timer because
2821 * each of them will scan the queue anyway.
2822 */
2823 if (unlikely(actconn >= global.maxconn))
2824 goto out;
2825
2826 /* We should periodically try to enable listeners waiting for a global
2827 * resource here, because it is possible, though very unlikely, that
2828 * they have been blocked by a temporary lack of global resource such
2829 * as a file descriptor or memory and that the temporary condition has
2830 * disappeared.
2831 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002832 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002833
2834 out:
2835 t->expire = next;
2836 task_queue(t);
2837 return t;
2838}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002839
Willy Tarreaubaaee002006-06-26 02:48:02 +02002840int main(int argc, char **argv)
2841{
2842 int err, retry;
2843 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002844 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002845 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002846
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002847 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002848
Willy Tarreauff9c9142019-02-07 10:39:36 +01002849 /* this can only safely be done here, though it's optimized away by
2850 * the compiler.
2851 */
2852 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2853 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2854 "HAProxy was built with value %d, please fix it and rebuild.\n",
2855 LONGBITS, MAX_PROCS);
2856 exit(1);
2857 }
2858
Willy Tarreaubf696402019-03-01 10:09:28 +01002859 /* take a copy of initial limits before we possibly change them */
2860 getrlimit(RLIMIT_NOFILE, &limit);
2861 rlim_fd_cur_at_boot = limit.rlim_cur;
2862 rlim_fd_max_at_boot = limit.rlim_max;
2863
Willy Tarreau5794fb02018-11-25 18:43:29 +01002864 /* process all initcalls in order of potential dependency */
2865 RUN_INITCALLS(STG_PREPARE);
2866 RUN_INITCALLS(STG_LOCK);
2867 RUN_INITCALLS(STG_ALLOC);
2868 RUN_INITCALLS(STG_POOL);
2869 RUN_INITCALLS(STG_REGISTER);
2870 RUN_INITCALLS(STG_INIT);
2871
Emeric Bruncf20bf12010-10-22 16:06:11 +02002872 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002873 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2874 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2875 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002876 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002877
Willy Tarreaue437c442010-03-17 18:02:46 +01002878 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2879 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2880 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002881 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002882 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002883
Willy Tarreaudc23a922011-02-16 11:10:36 +01002884 /* ulimits */
2885 if (!global.rlimit_nofile)
2886 global.rlimit_nofile = global.maxsock;
2887
2888 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002889 limit.rlim_cur = global.rlimit_nofile;
2890 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2891
Willy Tarreaudc23a922011-02-16 11:10:36 +01002892 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002893 /* try to set it to the max possible at least */
2894 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002895 limit.rlim_cur = limit.rlim_max;
2896 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2897 getrlimit(RLIMIT_NOFILE, &limit);
2898
Christopher Faulet767a84b2017-11-24 16:50:31 +01002899 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 +02002900 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002901 }
2902 }
2903
2904 if (global.rlimit_memmax) {
2905 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002906 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002907#ifdef RLIMIT_AS
2908 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002909 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2910 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002911 }
2912#else
2913 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002914 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2915 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002916 }
2917#endif
2918 }
2919
Olivier Houchardf73629d2017-04-05 22:33:04 +02002920 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002921 if (strcmp("/dev/null", old_unixsocket) != 0) {
2922 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002923 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002924 if (!(global.mode & MODE_MWORKER))
2925 exit(1);
2926 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002927 }
2928 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002929 get_cur_unixsocket();
2930
Willy Tarreaubaaee002006-06-26 02:48:02 +02002931 /* We will loop at most 100 times with 10 ms delay each time.
2932 * That's at most 1 second. We only send a signal to old pids
2933 * if we cannot grab at least one port.
2934 */
2935 retry = MAX_START_RETRIES;
2936 err = ERR_NONE;
2937 while (retry >= 0) {
2938 struct timeval w;
2939 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002940 /* exit the loop on no error or fatal error */
2941 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002942 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002943 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002944 break;
2945
2946 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2947 * listening sockets. So on those platforms, it would be wiser to
2948 * simply send SIGUSR1, which will not be undoable.
2949 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002950 if (tell_old_pids(SIGTTOU) == 0) {
2951 /* no need to wait if we can't contact old pids */
2952 retry = 0;
2953 continue;
2954 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002955 /* give some time to old processes to stop listening */
2956 w.tv_sec = 0;
2957 w.tv_usec = 10*1000;
2958 select(0, NULL, NULL, NULL, &w);
2959 retry--;
2960 }
2961
2962 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002963 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002964 if (retry != MAX_START_RETRIES && nb_oldpids) {
2965 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002966 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002967 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002968 exit(1);
2969 }
2970
William Lallemand944e6192018-11-21 15:48:31 +01002971 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002972 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002973 /* Note: we don't have to send anything to the old pids because we
2974 * never stopped them. */
2975 exit(1);
2976 }
2977
Emeric Bruncf20bf12010-10-22 16:06:11 +02002978 err = protocol_bind_all(errmsg, sizeof(errmsg));
2979 if ((err & ~ERR_WARN) != ERR_NONE) {
2980 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002981 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002982
Christopher Faulet767a84b2017-11-24 16:50:31 +01002983 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002984 protocol_unbind_all(); /* cleanup everything we can */
2985 if (nb_oldpids)
2986 tell_old_pids(SIGTTIN);
2987 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002988 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002989 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002990 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002991 /* Ok, all listener should now be bound, close any leftover sockets
2992 * the previous process gave us, we don't need them anymore
2993 */
2994 while (xfer_sock_list != NULL) {
2995 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2996 close(xfer_sock_list->fd);
2997 free(xfer_sock_list->iface);
2998 free(xfer_sock_list->namespace);
2999 free(xfer_sock_list);
3000 xfer_sock_list = tmpxfer;
3001 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003002
Willy Tarreaubaaee002006-06-26 02:48:02 +02003003 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003004 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3005 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003006
Willy Tarreaubaaee002006-06-26 02:48:02 +02003007 /* MODE_QUIET can inhibit alerts and warnings below this line */
3008
PiBa-NL149a81a2017-12-25 21:03:31 +01003009 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3010 /* either stdin/out/err are already closed or should stay as they are. */
3011 if ((global.mode & MODE_DAEMON)) {
3012 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3013 global.mode &= ~MODE_VERBOSE;
3014 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3015 }
3016 } else {
3017 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3018 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003019 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003020 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003021 }
3022
3023 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003024 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003025 unlink(global.pidfile);
3026 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3027 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003028 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003029 if (nb_oldpids)
3030 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003031 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003032 exit(1);
3033 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003034 }
3035
Willy Tarreaub38651a2007-03-24 17:24:39 +01003036 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003037 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3038 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003039 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003040 exit(1);
3041 }
3042
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003043 /* If the user is not root, we'll still let him try the configuration
3044 * but we inform him that unexpected behaviour may occur.
3045 */
3046 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003047 ha_warning("[%s.main()] Some options which require full privileges"
3048 " might not work well.\n"
3049 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003050
William Lallemand095ba4c2017-06-01 17:38:50 +02003051 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3052
3053 /* chroot if needed */
3054 if (global.chroot != NULL) {
3055 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003056 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003057 if (nb_oldpids)
3058 tell_old_pids(SIGTTIN);
3059 protocol_unbind_all();
3060 exit(1);
3061 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003062 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003063 }
3064
William Lallemand944e6192018-11-21 15:48:31 +01003065 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003066 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003067
William Lallemand8a361b52017-06-20 11:20:33 +02003068 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3069 nb_oldpids = 0;
3070 free(oldpids);
3071 oldpids = NULL;
3072 }
3073
3074
Willy Tarreaubaaee002006-06-26 02:48:02 +02003075 /* Note that any error at this stage will be fatal because we will not
3076 * be able to restart the old pids.
3077 */
3078
William Lallemand095ba4c2017-06-01 17:38:50 +02003079 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3080 /* setgid / setuid */
3081 if (global.gid) {
3082 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003083 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3084 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003085
3086 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003087 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003088 protocol_unbind_all();
3089 exit(1);
3090 }
3091 }
Michael Schererab012dd2013-01-12 18:35:19 +01003092
William Lallemand095ba4c2017-06-01 17:38:50 +02003093 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003094 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01003095 protocol_unbind_all();
3096 exit(1);
3097 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003098 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003099 /* check ulimits */
3100 limit.rlim_cur = limit.rlim_max = 0;
3101 getrlimit(RLIMIT_NOFILE, &limit);
3102 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003103 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",
3104 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003105 }
3106
William Lallemand944e6192018-11-21 15:48:31 +01003107 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003108 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003109 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003110 int ret = 0;
3111 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003112 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003113
William Lallemand095ba4c2017-06-01 17:38:50 +02003114 /*
3115 * if daemon + mworker: must fork here to let a master
3116 * process live in background before forking children
3117 */
William Lallemand73b85e72017-06-01 17:38:51 +02003118
3119 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3120 && (global.mode & MODE_MWORKER)
3121 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003122 ret = fork();
3123 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003124 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003125 protocol_unbind_all();
3126 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003127 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003128 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003129 } else /* change the process group ID in the child (master process) */
3130 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003131 }
William Lallemande20b6a62017-06-01 17:38:55 +02003132
William Lallemande20b6a62017-06-01 17:38:55 +02003133
William Lallemanddeed7802017-11-06 11:00:04 +01003134 /* if in master-worker mode, write the PID of the father */
3135 if (global.mode & MODE_MWORKER) {
3136 char pidstr[100];
3137 snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003138 if (pidfd >= 0)
3139 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003140 }
3141
Willy Tarreaubaaee002006-06-26 02:48:02 +02003142 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003143 if (!(global.mode & MODE_MWORKER_WAIT)) {
3144 children = calloc(global.nbproc, sizeof(int));
3145 for (proc = 0; proc < global.nbproc; proc++) {
3146 ret = fork();
3147 if (ret < 0) {
3148 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3149 protocol_unbind_all();
3150 exit(1); /* there has been an error */
3151 }
3152 else if (ret == 0) /* child breaks here */
3153 break;
3154 children[proc] = ret;
3155 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3156 char pidstr[100];
3157 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
3158 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
3159 }
3160 if (global.mode & MODE_MWORKER) {
3161 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003162
William Lallemand220567e2018-11-21 18:04:53 +01003163 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003164 /* find the right mworker_proc */
3165 list_for_each_entry(child, &proc_list, list) {
3166 if (child->relative_pid == relative_pid &&
3167 child->reloads == 0) {
3168 child->timestamp = now.tv_sec;
3169 child->pid = ret;
3170 break;
3171 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003172 }
3173 }
William Lallemandbc193052018-09-11 10:06:26 +02003174
William Lallemand944e6192018-11-21 15:48:31 +01003175 relative_pid++; /* each child will get a different one */
3176 pid_bit <<= 1;
3177 }
3178 } else {
3179 /* wait mode */
3180 global.nbproc = 1;
3181 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003182 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003183
3184#ifdef USE_CPU_AFFINITY
3185 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003186 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003187 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003188#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003189 {
3190 cpuset_t cpuset;
3191 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003192 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003193
3194 CPU_ZERO(&cpuset);
3195 while ((i = ffsl(cpu_map)) > 0) {
3196 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003197 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003198 }
3199 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3200 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003201#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003202 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003203#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003204#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003205 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003206 if (pidfd >= 0) {
3207 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3208 close(pidfd);
3209 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003210
3211 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003212 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003213
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003214 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003215 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003216
3217 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3218 (global.mode & MODE_DAEMON)) {
3219 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003220 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3221 stdio_quiet(-1);
3222
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003223 global.mode &= ~MODE_VERBOSE;
3224 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003225 }
3226
William Lallemandb3f2be32018-09-11 10:06:18 +02003227 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003228 /* should never get there */
3229 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003230 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003231#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003232 ssl_free_dh();
3233#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003234 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003235 }
3236
William Lallemandcb11fd22017-06-01 17:38:52 +02003237 /* child must never use the atexit function */
3238 atexit_flag = 0;
3239
William Lallemandbc193052018-09-11 10:06:26 +02003240 /* close useless master sockets */
3241 if (global.mode & MODE_MWORKER) {
3242 struct mworker_proc *child, *it;
3243 master = 0;
3244
William Lallemand309dc9a2018-10-26 14:47:45 +02003245 mworker_cli_proxy_stop();
3246
William Lallemandbc193052018-09-11 10:06:26 +02003247 /* free proc struct of other processes */
3248 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003249 /* close the FD of the master side for all
3250 * workers, we don't need to close the worker
3251 * side of other workers since it's done with
3252 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003253 if (child->ipc_fd[0] >= 0)
3254 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003255 if (child->relative_pid == relative_pid &&
3256 child->reloads == 0) {
3257 /* keep this struct if this is our pid */
3258 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003259 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003260 }
William Lallemandbc193052018-09-11 10:06:26 +02003261 LIST_DEL(&child->list);
3262 free(child);
3263 }
3264 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003265
William Lallemande1340412017-12-28 16:09:36 +01003266 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3267 devnullfd = open("/dev/null", O_RDWR, 0);
3268 if (devnullfd < 0) {
3269 ha_alert("Cannot open /dev/null\n");
3270 exit(EXIT_FAILURE);
3271 }
3272 }
3273
William Lallemand095ba4c2017-06-01 17:38:50 +02003274 /* Must chroot and setgid/setuid in the children */
3275 /* chroot if needed */
3276 if (global.chroot != NULL) {
3277 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003278 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003279 if (nb_oldpids)
3280 tell_old_pids(SIGTTIN);
3281 protocol_unbind_all();
3282 exit(1);
3283 }
3284 }
3285
3286 free(global.chroot);
3287 global.chroot = NULL;
3288
3289 /* setgid / setuid */
3290 if (global.gid) {
3291 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003292 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3293 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003294
3295 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003296 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003297 protocol_unbind_all();
3298 exit(1);
3299 }
3300 }
3301
3302 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003303 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003304 protocol_unbind_all();
3305 exit(1);
3306 }
3307
William Lallemand7f80eb22017-05-26 18:19:55 +02003308 /* pass through every cli socket, and check if it's bound to
3309 * the current process and if it exposes listeners sockets.
3310 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3311 * */
3312
3313 if (global.stats_fe) {
3314 struct bind_conf *bind_conf;
3315
3316 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3317 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3318 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3319 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3320 break;
3321 }
3322 }
3323 }
3324 }
3325
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003326 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003327 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003328 while (px != NULL) {
3329 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003330 if (!(px->bind_proc & (1UL << proc))) {
3331 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3332 zombify_proxy(px);
3333 else
3334 stop_proxy(px);
3335 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003336 }
3337 px = px->next;
3338 }
3339
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003340 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003341 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003342 if (!curpeers->peers_fe)
3343 continue;
3344
3345 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3346 continue;
3347
3348 stop_proxy(curpeers->peers_fe);
3349 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003350 signal_unregister_handler(curpeers->sighandler);
3351 task_delete(curpeers->sync_task);
3352 task_free(curpeers->sync_task);
3353 curpeers->sync_task = NULL;
3354 task_free(curpeers->peers_fe->task);
3355 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003356 curpeers->peers_fe = NULL;
3357 }
3358
William Lallemand2e8fad92018-11-13 16:18:23 +01003359 /*
3360 * This is only done in daemon mode because we might want the
3361 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3362 * we should now close the 3 first FDs to ensure that we can
3363 * detach from the TTY. We MUST NOT do it in other cases since
3364 * it would have already be done, and 0-2 would have been
3365 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003366 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003367 if ((global.mode & MODE_DAEMON) &&
3368 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003369 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003370 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003371 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003372 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3373 }
3374 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003375 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3376 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003377 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003378 }
3379
Christopher Faulete3a5e352017-10-24 13:53:54 +02003380 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003381 /*
3382 * That's it : the central polling loop. Run until we stop.
3383 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003384#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003385 {
Christopher Faulet1d17c102017-08-29 15:38:48 +02003386 unsigned int *tids = calloc(global.nbthread, sizeof(unsigned int));
3387 pthread_t *threads = calloc(global.nbthread, sizeof(pthread_t));
3388 int i;
William Lallemand1aab50b2018-06-07 09:46:01 +02003389 sigset_t blocked_sig, old_sig;
Christopher Faulet1d17c102017-08-29 15:38:48 +02003390
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003391 /* Init tids array */
3392 for (i = 0; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003393 tids[i] = i;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003394
William Lallemand1aab50b2018-06-07 09:46:01 +02003395 /* ensure the signals will be blocked in every thread */
3396 sigfillset(&blocked_sig);
3397 sigdelset(&blocked_sig, SIGPROF);
3398 sigdelset(&blocked_sig, SIGBUS);
3399 sigdelset(&blocked_sig, SIGFPE);
3400 sigdelset(&blocked_sig, SIGILL);
3401 sigdelset(&blocked_sig, SIGSEGV);
3402 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3403
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003404 /* Create nbthread-1 thread. The first thread is the current process */
3405 threads[0] = pthread_self();
3406 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003407 pthread_create(&threads[i], NULL, &run_thread_poll_loop, &tids[i]);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003408
Christopher Faulet62519022017-10-16 15:49:32 +02003409#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003410 /* Now the CPU affinity for all threads */
3411 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003412 if (global.cpu_map.proc[relative_pid-1])
3413 global.cpu_map.thread[relative_pid-1][i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003414
Willy Tarreau421f02e2018-01-20 18:19:22 +01003415 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Olivier Houchard829aa242017-12-01 18:19:43 +01003416 global.cpu_map.thread[relative_pid-1][i]) {/* only do this if the thread has a THREAD map */
3417#if defined(__FreeBSD__) || defined(__NetBSD__)
3418 cpuset_t cpuset;
3419#else
3420 cpu_set_t cpuset;
3421#endif
3422 int j;
3423 unsigned long cpu_map = global.cpu_map.thread[relative_pid-1][i];
3424
3425 CPU_ZERO(&cpuset);
3426
3427 while ((j = ffsl(cpu_map)) > 0) {
3428 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003429 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003430 }
Christopher Faulet62519022017-10-16 15:49:32 +02003431 pthread_setaffinity_np(threads[i],
Olivier Houchard829aa242017-12-01 18:19:43 +01003432 sizeof(cpuset), &cpuset);
3433 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003434 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003435#endif /* !USE_CPU_AFFINITY */
3436
William Lallemand1aab50b2018-06-07 09:46:01 +02003437 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003438 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003439
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003440 /* Finally, start the poll loop for the first thread */
3441 run_thread_poll_loop(&tids[0]);
3442
3443 /* Wait the end of other threads */
3444 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003445 pthread_join(threads[i], NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003446
Christopher Faulet1d17c102017-08-29 15:38:48 +02003447 free(tids);
3448 free(threads);
3449
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003450#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3451 show_lock_stats();
3452#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003453 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003454#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003455 haproxy_unblock_signals();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003456 run_thread_poll_loop((int []){0});
Christopher Faulet62519022017-10-16 15:49:32 +02003457
Christopher Faulet62519022017-10-16 15:49:32 +02003458#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003459
3460 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003461 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003462
Willy Tarreaubaaee002006-06-26 02:48:02 +02003463 exit(0);
3464}
3465
3466
3467/*
3468 * Local variables:
3469 * c-indent-level: 8
3470 * c-basic-offset: 8
3471 * End:
3472 */