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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
David Carlier5e4c8e22019-09-13 05:12:58 +010062#ifdef __APPLE__
63#include <mach/mach_types.h>
64#include <mach/thread_act.h>
65#include <mach/thread_policy.h>
66#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010067#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau636848a2019-04-15 19:38:50 +020069#if defined(USE_PRCTL)
70#include <sys/prctl.h>
71#endif
72
Willy Tarreaubaaee002006-06-26 02:48:02 +020073#ifdef DEBUG_FULL
74#include <assert.h>
75#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010076#if defined(USE_SYSTEMD)
77#include <systemd/sd-daemon.h>
78#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020079
Willy Tarreau2dd0d472006-06-29 17:53:05 +020080#include <common/base64.h>
81#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020082#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020083#include <common/compat.h>
84#include <common/config.h>
85#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010086#include <common/errors.h>
Willy Tarreau5794fb02018-11-25 18:43:29 +010087#include <common/initcall.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020088#include <common/memory.h>
89#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010090#include <common/namespace.h>
Willy Tarreauc125cef2019-05-10 09:58:43 +020091#include <common/openssl-compat.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020092#include <common/regex.h>
93#include <common/standard.h>
94#include <common/time.h>
95#include <common/uri_auth.h>
96#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020097#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020098
99#include <types/capture.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200100#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200101#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200102#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +0900103#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +0200104#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200105
Willy Tarreau0fc45a72007-06-17 00:36:03 +0200106#include <proto/acl.h>
Willy Tarreau609aad92018-11-22 08:31:09 +0100107#include <proto/activity.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +0200108#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +0200109#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200110#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200111#include <proto/channel.h>
William Lallemandce83b4a2018-10-26 14:47:30 +0200112#include <proto/cli.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200113#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200114#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200115#include <proto/filters.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100116#include <proto/hlua.h>
Willy Tarreau61c112a2018-10-02 16:43:32 +0200117#include <proto/http_rules.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200118#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200119#include <proto/log.h>
William Lallemand48dfbbd2019-04-01 11:29:53 +0200120#include <proto/mworker.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100121#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200122#include <proto/protocol.h>
Christopher Fauletfc9cfe42019-07-16 14:54:53 +0200123#include <proto/http_ana.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200124#include <proto/proxy.h>
125#include <proto/queue.h>
126#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200127#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200128#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200129#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200130#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200131#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100132#include <proto/vars.h>
Grant Zhang872f9c22017-01-21 01:10:18 +0000133#include <proto/ssl_sock.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200134
Willy Tarreau7b5654f2019-03-29 21:30:17 +0100135/* array of init calls for older platforms */
136DECLARE_INIT_STAGES;
137
Willy Tarreau477ecd82010-01-03 21:12:30 +0100138/* list of config files */
139static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200140int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100141int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100142unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaua38a7172019-02-02 17:11:28 +0100143unsigned long all_proc_mask = 1; /* mask of all processes */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200144
Olivier Houchard79321b92018-07-26 17:55:11 +0200145volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200146/* global options */
147struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100148 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100149 .nbproc = 1,
Willy Tarreau149ab772019-01-26 14:27:06 +0100150 .nbthread = 0,
William Lallemand5f232402012-04-05 18:02:55 +0200151 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200152 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100153 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100154 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100155 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200156 .unix_bind = {
157 .ux = {
158 .uid = -1,
159 .gid = -1,
160 .mode = 0,
161 }
162 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200163 .tune = {
Willy Tarreau7ac908b2019-02-27 12:02:18 +0100164 .options = GTUNE_LISTENER_MQ,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100165 .bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreau27097842015-09-28 13:53:23 +0200166 .maxrewrite = -1,
Willy Tarreauc77d3642018-12-12 06:19:42 +0100167 .chksize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
Willy Tarreaua24adf02014-11-27 01:11:56 +0100168 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200169 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Olivier Houchard88698d92019-04-16 19:07:22 +0200170 .pool_low_ratio = 20,
171 .pool_high_ratio = 25,
Christopher Faulet41ba36f2019-07-19 09:36:45 +0200172 .max_http_hdr = MAX_HTTP_HDR,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200173#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100174 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200175#endif
William Lallemandf3747832012-11-09 12:33:10 +0100176 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100177#ifdef DEFAULT_IDLE_TIMER
178 .idle_timer = DEFAULT_IDLE_TIMER,
179#else
180 .idle_timer = 1000, /* 1 second */
181#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200182 },
Emeric Brun76d88952012-10-05 15:47:31 +0200183#ifdef USE_OPENSSL
184#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200185 .maxsslconn = DEFAULT_MAXSSLCONN,
186#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200187#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200188 /* others NULL OK */
189};
190
191/*********************************************************************/
192
193int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100194int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200195int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
William Lallemanda7199262018-11-16 16:57:20 +0100196int unstoppable_jobs = 0; /* number of active jobs that can't be stopped during a soft stop */
Willy Tarreau199ad242018-11-05 16:31:22 +0100197int active_peers = 0; /* number of active peers (connection attempts and connected) */
Willy Tarreau2d372c22018-11-05 17:12:27 +0100198int connected_peers = 0; /* number of connected peers (verified ones) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200199
200/* Here we store informations about the pids of the processes we may pause
201 * or kill. We will send them a signal every 10 ms until we can bind to all
202 * our ports. With 200 retries, that's about 2 seconds.
203 */
204#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200205static int *oldpids = NULL;
206static int oldpids_sig; /* use USR1 or TERM */
207
Olivier Houchardf73629d2017-04-05 22:33:04 +0200208/* Path to the unix socket we use to retrieve listener sockets from the old process */
209static const char *old_unixsocket;
210
William Lallemand85b0bd92017-06-01 17:38:53 +0200211static char *cur_unixsocket = NULL;
212
William Lallemandcb11fd22017-06-01 17:38:52 +0200213int atexit_flag = 0;
214
Willy Tarreaubb545b42010-08-25 12:58:59 +0200215int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200216const int zero = 0;
217const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200218const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200219
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100220char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200221char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200222
Willy Tarreau89efaed2013-12-13 15:14:55 +0100223/* used from everywhere just to drain results we don't want to read and which
224 * recent versions of gcc increasingly and annoyingly complain about.
225 */
226int shut_your_big_mouth_gcc_int = 0;
227
William Lallemand73b85e72017-06-01 17:38:51 +0200228static char **next_argv = NULL;
229
William Lallemandbc193052018-09-11 10:06:26 +0200230struct list proc_list = LIST_HEAD_INIT(proc_list);
231
232int master = 0; /* 1 if in master, 0 if in child */
Willy Tarreaubf696402019-03-01 10:09:28 +0100233unsigned int rlim_fd_cur_at_boot = 0;
234unsigned int rlim_fd_max_at_boot = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200235
William Lallemand16dd1b32018-11-19 18:46:18 +0100236struct mworker_proc *proc_self = NULL;
William Lallemandbc193052018-09-11 10:06:26 +0200237
Willy Tarreau08ceb102011-07-24 22:58:00 +0200238/* list of the temporarily limited listeners because of lack of resource */
Olivier Houchard859dc802019-08-08 15:47:21 +0200239struct mt_list global_listener_queue = MT_LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200240struct task *global_listener_queue_task;
Olivier Houchard9f6af332018-05-25 14:04:04 +0200241static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200242
William Lallemandb3f2be32018-09-11 10:06:18 +0200243static void *run_thread_poll_loop(void *data);
244
Willy Tarreauff055502014-04-28 22:27:06 +0200245/* bitfield of a few warnings to emit just once (WARN_*) */
246unsigned int warned = 0;
247
William Lallemande7361152018-10-26 14:47:36 +0200248/* master CLI configuration (-S flag) */
249struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100250
251/* These are strings to be reported in the output of "haproxy -vv". They may
252 * either be constants (in which case must_free must be zero) or dynamically
253 * allocated strings to pass to free() on exit, and in this case must_free
254 * must be non-zero.
255 */
256struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
257struct build_opts_str {
258 struct list list;
259 const char *str;
260 int must_free;
261};
262
Willy Tarreaue6945732016-12-21 19:57:00 +0100263/* These functions are called just after the point where the program exits
264 * after a config validity check, so they are generally suited for resource
265 * allocation and slow initializations that should be skipped during basic
266 * config checks. The functions must return 0 on success, or a combination
267 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
268 * and immediate exit, so the function must have emitted any useful error.
269 */
270struct list post_check_list = LIST_HEAD_INIT(post_check_list);
271struct post_check_fct {
272 struct list list;
273 int (*fct)();
274};
275
Christopher Fauletc1692962019-08-12 09:51:07 +0200276/* These functions are called for each proxy just after the config validity
277 * check. The functions must return 0 on success, or a combination of ERR_*
278 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
279 * exit, so the function must have emitted any useful error.
280 */
281struct list post_proxy_check_list = LIST_HEAD_INIT(post_proxy_check_list);
282struct post_proxy_check_fct {
283 struct list list;
284 int (*fct)(struct proxy *);
285};
286
287/* These functions are called for each server just after the config validity
288 * check. The functions must return 0 on success, or a combination of ERR_*
289 * flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause and immediate
290 * exit, so the function must have emitted any useful error.
291 */
292struct list post_server_check_list = LIST_HEAD_INIT(post_server_check_list);
293struct post_server_check_fct {
294 struct list list;
295 int (*fct)(struct server *);
296};
297
Willy Tarreau082b6282019-05-22 14:42:12 +0200298/* These functions are called for each thread just after the thread creation
299 * and before running the init functions. They should be used to do per-thread
300 * (re-)allocations that are needed by subsequent functoins. They must return 0
301 * if an error occurred. */
302struct list per_thread_alloc_list = LIST_HEAD_INIT(per_thread_alloc_list);
303struct per_thread_alloc_fct {
Willy Tarreau05554e62016-12-21 20:46:26 +0100304 struct list list;
Willy Tarreau082b6282019-05-22 14:42:12 +0200305 int (*fct)();
Willy Tarreau05554e62016-12-21 20:46:26 +0100306};
307
Christopher Faulet415f6112017-07-25 16:52:58 +0200308/* These functions are called for each thread just after the thread creation
309 * and before running the scheduler. They should be used to do per-thread
310 * initializations. They must return 0 if an error occurred. */
311struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
312struct per_thread_init_fct {
313 struct list list;
314 int (*fct)();
315};
316
Willy Tarreau082b6282019-05-22 14:42:12 +0200317/* These functions are called when freeing the global sections at the end of
318 * deinit, after everything is stopped. They don't return anything. They should
319 * not release shared resources that are possibly used by other deinit
320 * functions, only close/release what is private. Use the per_thread_free_list
321 * to release shared resources.
322 */
323struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
324struct post_deinit_fct {
325 struct list list;
326 void (*fct)();
327};
328
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200329/* These functions are called when freeing a proxy during the deinit, after
330 * everything isg stopped. They don't return anything. They should not release
331 * the proxy itself or any shared resources that are possibly used by other
332 * deinit functions, only close/release what is private.
333 */
334struct list proxy_deinit_list = LIST_HEAD_INIT(proxy_deinit_list);
335struct proxy_deinit_fct {
336 struct list list;
337 void (*fct)(struct proxy *);
338};
339
340/* These functions are called when freeing a server during the deinit, after
341 * everything isg stopped. They don't return anything. They should not release
342 * the proxy itself or any shared resources that are possibly used by other
343 * deinit functions, only close/release what is private.
344 */
345struct list server_deinit_list = LIST_HEAD_INIT(server_deinit_list);
346struct server_deinit_fct {
347 struct list list;
348 void (*fct)(struct server *);
349};
350
Willy Tarreau082b6282019-05-22 14:42:12 +0200351/* These functions are called when freeing the global sections at the end of
352 * deinit, after the thread deinit functions, to release unneeded memory
353 * allocations. They don't return anything, and they work in best effort mode
354 * as their sole goal is to make valgrind mostly happy.
355 */
356struct list per_thread_free_list = LIST_HEAD_INIT(per_thread_free_list);
357struct per_thread_free_fct {
358 struct list list;
359 int (*fct)();
360};
361
Christopher Faulet415f6112017-07-25 16:52:58 +0200362/* These functions are called for each thread just after the scheduler loop and
363 * before exiting the thread. They don't return anything and, as for post-deinit
364 * functions, they work in best effort mode as their sole goal is to make
365 * valgrind mostly happy. */
366struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
367struct per_thread_deinit_fct {
368 struct list list;
369 void (*fct)();
370};
371
Willy Tarreaubaaee002006-06-26 02:48:02 +0200372/*********************************************************************/
373/* general purpose functions ***************************************/
374/*********************************************************************/
375
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100376/* used to register some build option strings at boot. Set must_free to
377 * non-zero if the string must be freed upon exit.
378 */
379void hap_register_build_opts(const char *str, int must_free)
380{
381 struct build_opts_str *b;
382
383 b = calloc(1, sizeof(*b));
384 if (!b) {
385 fprintf(stderr, "out of memory\n");
386 exit(1);
387 }
388 b->str = str;
389 b->must_free = must_free;
390 LIST_ADDQ(&build_opts_list, &b->list);
391}
392
Willy Tarreaue6945732016-12-21 19:57:00 +0100393/* used to register some initialization functions to call after the checks. */
394void hap_register_post_check(int (*fct)())
395{
396 struct post_check_fct *b;
397
398 b = calloc(1, sizeof(*b));
399 if (!b) {
400 fprintf(stderr, "out of memory\n");
401 exit(1);
402 }
403 b->fct = fct;
404 LIST_ADDQ(&post_check_list, &b->list);
405}
406
Christopher Fauletc1692962019-08-12 09:51:07 +0200407/* used to register some initialization functions to call for each proxy after
408 * the checks.
409 */
410void hap_register_post_proxy_check(int (*fct)(struct proxy *))
411{
412 struct post_proxy_check_fct *b;
413
414 b = calloc(1, sizeof(*b));
415 if (!b) {
416 fprintf(stderr, "out of memory\n");
417 exit(1);
418 }
419 b->fct = fct;
420 LIST_ADDQ(&post_proxy_check_list, &b->list);
421}
422
423/* used to register some initialization functions to call for each server after
424 * the checks.
425 */
426void hap_register_post_server_check(int (*fct)(struct server *))
427{
428 struct post_server_check_fct *b;
429
430 b = calloc(1, sizeof(*b));
431 if (!b) {
432 fprintf(stderr, "out of memory\n");
433 exit(1);
434 }
435 b->fct = fct;
436 LIST_ADDQ(&post_server_check_list, &b->list);
437}
438
Willy Tarreau05554e62016-12-21 20:46:26 +0100439/* used to register some de-initialization functions to call after everything
440 * has stopped.
441 */
442void hap_register_post_deinit(void (*fct)())
443{
444 struct post_deinit_fct *b;
445
446 b = calloc(1, sizeof(*b));
447 if (!b) {
448 fprintf(stderr, "out of memory\n");
449 exit(1);
450 }
451 b->fct = fct;
452 LIST_ADDQ(&post_deinit_list, &b->list);
453}
454
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +0200455/* used to register some per proxy de-initialization functions to call after
456 * everything has stopped.
457 */
458void hap_register_proxy_deinit(void (*fct)(struct proxy *))
459{
460 struct proxy_deinit_fct *b;
461
462 b = calloc(1, sizeof(*b));
463 if (!b) {
464 fprintf(stderr, "out of memory\n");
465 exit(1);
466 }
467 b->fct = fct;
468 LIST_ADDQ(&proxy_deinit_list, &b->list);
469}
470
471
472/* used to register some per server de-initialization functions to call after
473 * everything has stopped.
474 */
475void hap_register_server_deinit(void (*fct)(struct server *))
476{
477 struct server_deinit_fct *b;
478
479 b = calloc(1, sizeof(*b));
480 if (!b) {
481 fprintf(stderr, "out of memory\n");
482 exit(1);
483 }
484 b->fct = fct;
485 LIST_ADDQ(&server_deinit_list, &b->list);
486}
487
Willy Tarreau082b6282019-05-22 14:42:12 +0200488/* used to register some allocation functions to call for each thread. */
489void hap_register_per_thread_alloc(int (*fct)())
490{
491 struct per_thread_alloc_fct *b;
492
493 b = calloc(1, sizeof(*b));
494 if (!b) {
495 fprintf(stderr, "out of memory\n");
496 exit(1);
497 }
498 b->fct = fct;
499 LIST_ADDQ(&per_thread_alloc_list, &b->list);
500}
501
Christopher Faulet415f6112017-07-25 16:52:58 +0200502/* used to register some initialization functions to call for each thread. */
503void hap_register_per_thread_init(int (*fct)())
504{
505 struct per_thread_init_fct *b;
506
507 b = calloc(1, sizeof(*b));
508 if (!b) {
509 fprintf(stderr, "out of memory\n");
510 exit(1);
511 }
512 b->fct = fct;
513 LIST_ADDQ(&per_thread_init_list, &b->list);
514}
515
516/* used to register some de-initialization functions to call for each thread. */
517void hap_register_per_thread_deinit(void (*fct)())
518{
519 struct per_thread_deinit_fct *b;
520
521 b = calloc(1, sizeof(*b));
522 if (!b) {
523 fprintf(stderr, "out of memory\n");
524 exit(1);
525 }
526 b->fct = fct;
527 LIST_ADDQ(&per_thread_deinit_list, &b->list);
528}
529
Willy Tarreau082b6282019-05-22 14:42:12 +0200530/* used to register some free functions to call for each thread. */
531void hap_register_per_thread_free(int (*fct)())
532{
533 struct per_thread_free_fct *b;
534
535 b = calloc(1, sizeof(*b));
536 if (!b) {
537 fprintf(stderr, "out of memory\n");
538 exit(1);
539 }
540 b->fct = fct;
541 LIST_ADDQ(&per_thread_free_list, &b->list);
542}
543
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100544static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200545{
Willy Tarreau08dd2022019-11-21 18:07:30 +0100546 printf("HA-Proxy version %s %s - https://haproxy.org/\n"
547 PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
Willy Tarreau47479eb2019-11-21 18:48:20 +0100548
549 if (strlen(PRODUCT_URL_BUGS) > 0) {
550 char base_version[20];
551 int dots = 0;
552 char *del;
553
554 /* only retrieve the base version without distro-specific extensions */
555 for (del = haproxy_version; *del; del++) {
556 if (*del == '.')
557 dots++;
558 else if (*del < '0' || *del > '9')
559 break;
560 }
561
562 strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
563 if (dots < 2)
564 printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
565 else
566 printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
567 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200568}
569
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100570static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100571{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100572 struct build_opts_str *item;
573
Willy Tarreau7b066db2007-12-02 11:28:59 +0100574 printf("Build options :"
575#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100576 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100577#endif
578#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100579 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100580#endif
581#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100582 "\n CC = " BUILD_CC
583#endif
584#ifdef BUILD_CFLAGS
585 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100586#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100587#ifdef BUILD_OPTIONS
588 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100589#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100590#ifdef BUILD_FEATURES
591 "\n\nFeature list : " BUILD_FEATURES
592#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200593 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100594 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200595 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100596 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200597
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100598 list_for_each_entry(item, &build_opts_list, list) {
599 puts(item->str);
600 }
601
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100602 putchar('\n');
603
Willy Tarreaube5b6852009-10-03 18:57:08 +0200604 list_pollers(stdout);
605 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200606 list_mux_proto(stdout);
607 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100608 list_services(stdout);
609 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100610 list_filters(stdout);
611 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100612}
613
Willy Tarreaubaaee002006-06-26 02:48:02 +0200614/*
615 * This function prints the command line usage and exits
616 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100617static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200618{
619 display_version();
620 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200621 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200622 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200623 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100624 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200625 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200626 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200627 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200628 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200629 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100630#if defined(USE_SYSTEMD)
631 " -Ws master-worker mode with systemd notify support.\n"
632#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200633 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200634 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100635 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200636 " -m limits the usable amount of memory (in MB)\n"
637 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200638 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200639 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200640#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200641 " -de disables epoll() usage even when available\n"
642#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200643#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200644 " -dk disables kqueue() usage even when available\n"
645#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200646#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000647 " -dv disables event ports usage even when available\n"
648#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200649#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200650 " -dp disables poll() usage even when available\n"
651#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200652#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100653 " -dS disables splice usage (broken on old kernels)\n"
654#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200655#if defined(USE_GETADDRINFO)
656 " -dG disables getaddrinfo() usage\n"
657#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000658#if defined(SO_REUSEPORT)
659 " -dR disables SO_REUSEPORT usage\n"
660#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100661 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100662 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200663 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200664 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200665 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200666 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100667 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200668 exit(1);
669}
670
671
672
673/*********************************************************************/
674/* more specific functions ***************************************/
675/*********************************************************************/
676
William Lallemand73b85e72017-06-01 17:38:51 +0200677/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
678 * pids the signal was correctly delivered to.
679 */
William Lallemande25473c2019-04-01 11:29:56 +0200680int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200681{
682 int p;
683 int ret = 0;
684 for (p = 0; p < nb_oldpids; p++)
685 if (kill(oldpids[p], sig) == 0)
686 ret++;
687 return ret;
688}
689
William Lallemand75ea0a02017-11-15 19:02:58 +0100690/*
William Lallemand73b85e72017-06-01 17:38:51 +0200691 * remove a pid forom the olpid array and decrease nb_oldpids
692 * return 1 pid was found otherwise return 0
693 */
694
695int delete_oldpid(int pid)
696{
697 int i;
698
699 for (i = 0; i < nb_oldpids; i++) {
700 if (oldpids[i] == pid) {
701 oldpids[i] = oldpids[nb_oldpids - 1];
702 oldpids[nb_oldpids - 1] = 0;
703 nb_oldpids--;
704 return 1;
705 }
706 }
707 return 0;
708}
709
William Lallemand85b0bd92017-06-01 17:38:53 +0200710
711static void get_cur_unixsocket()
712{
713 /* if -x was used, try to update the stat socket if not available anymore */
714 if (global.stats_fe) {
715 struct bind_conf *bind_conf;
716
717 /* pass through all stats socket */
718 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
719 struct listener *l;
720
721 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
722
723 if (l->addr.ss_family == AF_UNIX &&
724 (bind_conf->level & ACCESS_FD_LISTENERS)) {
725 const struct sockaddr_un *un;
726
727 un = (struct sockaddr_un *)&l->addr;
728 /* priority to old_unixsocket */
729 if (!cur_unixsocket) {
730 cur_unixsocket = strdup(un->sun_path);
731 } else {
732 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
733 free(cur_unixsocket);
734 cur_unixsocket = strdup(old_unixsocket);
735 return;
736 }
737 }
738 }
739 }
740 }
741 }
742 if (!cur_unixsocket && old_unixsocket)
743 cur_unixsocket = strdup(old_unixsocket);
744}
745
William Lallemand73b85e72017-06-01 17:38:51 +0200746/*
747 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800748 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200749 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100750void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200751{
752 int next_argc = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200753 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100754 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100755 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200756
757 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100758#if defined(USE_SYSTEMD)
759 if (global.tune.options & GTUNE_USE_SYSTEMD)
760 sd_notify(0, "RELOADING=1");
761#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200762 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
763
William Lallemandbc193052018-09-11 10:06:26 +0200764 mworker_proc_list_to_env(); /* put the children description in the env */
765
William Lallemand7c756a82018-11-26 11:53:40 +0100766 /* during the reload we must ensure that every FDs that can't be
767 * reuse (ie those that are not referenced in the proc_list)
768 * are closed or they will leak. */
769
770 /* close the listeners FD */
771 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200772
773 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
774 /* close the poller FD and the thread waker pipe FD */
775 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
776 ptdf->fct();
777 if (fdtab)
778 deinit_pollers();
779 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200780#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200781 /* close random device FDs */
782 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100783#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100784
Willy Tarreau8dca1952019-03-01 10:21:55 +0100785 /* restore the initial FD limits */
786 limit.rlim_cur = rlim_fd_cur_at_boot;
787 limit.rlim_max = rlim_fd_max_at_boot;
788 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
789 getrlimit(RLIMIT_NOFILE, &limit);
790 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
791 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
792 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
793 }
794
William Lallemand73b85e72017-06-01 17:38:51 +0200795 /* compute length */
796 while (next_argv[next_argc])
797 next_argc++;
798
William Lallemand85b0bd92017-06-01 17:38:53 +0200799 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand3f128872019-04-01 11:29:59 +0200800 next_argv = realloc(next_argv, (next_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200801 if (next_argv == NULL)
802 goto alloc_error;
803
William Lallemand73b85e72017-06-01 17:38:51 +0200804 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200805 if (mworker_child_nb() > 0) {
806 struct mworker_proc *child;
807
William Lallemand73b85e72017-06-01 17:38:51 +0200808 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200809
810 list_for_each_entry(child, &proc_list, list) {
William Lallemand677e2f22019-11-19 17:04:18 +0100811 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1 )
William Lallemand3f128872019-04-01 11:29:59 +0200812 continue;
813 next_argv[next_argc] = memprintf(&msg, "%d", child->pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200814 if (next_argv[next_argc] == NULL)
815 goto alloc_error;
816 msg = NULL;
William Lallemand3f128872019-04-01 11:29:59 +0200817 next_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200818 }
819 }
William Lallemand3f128872019-04-01 11:29:59 +0200820
William Lallemand73b85e72017-06-01 17:38:51 +0200821 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200822
William Lallemand2bf6d622017-06-20 11:20:23 +0200823 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200824 if (cur_unixsocket) {
825
William Lallemand2bf6d622017-06-20 11:20:23 +0200826 next_argv[next_argc++] = "-x";
827 next_argv[next_argc++] = (char *)cur_unixsocket;
828 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200829 }
830
Christopher Faulet767a84b2017-11-24 16:50:31 +0100831 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200832 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100833 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200834
Christopher Faulet767a84b2017-11-24 16:50:31 +0100835 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100836 return;
837
William Lallemand73b85e72017-06-01 17:38:51 +0200838alloc_error:
Joseph Herlant07a08342018-11-15 10:43:05 -0800839 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200840 return;
841}
842
William Lallemandb3f2be32018-09-11 10:06:18 +0200843static void mworker_loop()
844{
845
846#if defined(USE_SYSTEMD)
847 if (global.tune.options & GTUNE_USE_SYSTEMD)
848 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
849#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200850 /* Busy polling makes no sense in the master :-) */
851 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200852
William Lallemandbc193052018-09-11 10:06:26 +0200853 master = 1;
854
William Lallemand0564d412018-11-20 17:36:53 +0100855 signal_unregister(SIGUSR1);
856 signal_unregister(SIGHUP);
857 signal_unregister(SIGQUIT);
858
William Lallemandb3f2be32018-09-11 10:06:18 +0200859 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
860 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
861 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
862 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
863 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
864 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
865
866 mworker_unblock_signals();
867 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100868 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200869
William Lallemandbc193052018-09-11 10:06:26 +0200870 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
871 some SIGCHLD were lost */
872
William Lallemandb3f2be32018-09-11 10:06:18 +0200873 global.nbthread = 1;
874 relative_pid = 1;
875 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100876 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200877
William Lallemand2672eb92018-12-14 15:52:39 +0100878#ifdef USE_THREAD
879 tid_bit = 1;
880 all_threads_mask = 1;
881#endif
882
William Lallemandb3f2be32018-09-11 10:06:18 +0200883 jobs++; /* this is the "master" job, we want to take care of the
884 signals even if there is no listener so the poll loop don't
885 leave */
886
887 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200888 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200889}
William Lallemandcb11fd22017-06-01 17:38:52 +0200890
891/*
892 * Reexec the process in failure mode, instead of exiting
893 */
894void reexec_on_failure()
895{
896 if (!atexit_flag)
897 return;
898
899 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
900
Christopher Faulet767a84b2017-11-24 16:50:31 +0100901 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200902 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200903}
William Lallemand73b85e72017-06-01 17:38:51 +0200904
905
906/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200907 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
908 * a signal zero to all subscribers. This means that it's as easy as
909 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200910 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100911static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200912{
913 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200914 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100915 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200916}
917
918/*
919 * upon SIGTTOU, we pause everything
920 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100921static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200922{
923 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100924 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200925}
926
927/*
928 * upon SIGTTIN, let's have a soft stop.
929 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100930static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200931{
Willy Tarreaube58c382011-07-24 18:28:10 +0200932 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200933}
934
935/*
936 * this function dumps every server's state when the process receives SIGHUP.
937 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100938static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200939{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100940 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200941
Christopher Faulet767a84b2017-11-24 16:50:31 +0100942 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200943 while (p) {
944 struct server *s = p->srv;
945
946 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
947 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100948 chunk_printf(&trash,
949 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
950 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200951 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100952 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200953 ha_warning("%s\n", trash.area);
954 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200955 s = s->next;
956 }
957
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200958 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
959 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100960 chunk_printf(&trash,
961 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
962 p->id,
963 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 +0200964 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100965 chunk_printf(&trash,
966 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
967 p->id,
968 (p->srv_bck) ? "is running on backup servers" : "has no server available",
969 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 +0200970 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100971 chunk_printf(&trash,
972 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
973 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
974 p->id, p->srv_act, p->srv_bck,
975 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 +0200976 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200977 ha_warning("%s\n", trash.area);
978 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200979
980 p = p->next;
981 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200982}
983
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100984static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200985{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200986 /* dump memory usage then free everything possible */
987 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100988 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200989}
990
William Lallemande1340412017-12-28 16:09:36 +0100991/*
992 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
993 * If <fd> < 0, it opens /dev/null and use it to dup
994 *
995 * In the case of chrooting, you have to open /dev/null before the chroot, and
996 * pass the <fd> to this function
997 */
998static void stdio_quiet(int fd)
999{
1000 if (fd < 0)
1001 fd = open("/dev/null", O_RDWR, 0);
1002
1003 if (fd > -1) {
1004 fclose(stdin);
1005 fclose(stdout);
1006 fclose(stderr);
1007
1008 dup2(fd, 0);
1009 dup2(fd, 1);
1010 dup2(fd, 2);
1011 if (fd > 2)
1012 close(fd);
1013 return;
1014 }
1015
1016 ha_alert("Cannot open /dev/null\n");
1017 exit(EXIT_FAILURE);
1018}
1019
1020
Joseph Herlant03420902018-11-15 10:41:50 -08001021/* This function checks if cfg_cfgfiles contains directories.
1022 * If it finds one, it adds all the files (and only files) it contains
1023 * in cfg_cfgfiles in place of the directory (and removes the directory).
1024 * It adds the files in lexical order.
1025 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001026 * It doesn't add files with name starting with '.'
1027 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001028static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001029{
1030 struct wordlist *wl, *wlb;
1031 char *err = NULL;
1032
1033 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1034 struct stat file_stat;
1035 struct dirent **dir_entries = NULL;
1036 int dir_entries_nb;
1037 int dir_entries_it;
1038
1039 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001040 ha_alert("Cannot open configuration file/directory %s : %s\n",
1041 wl->s,
1042 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001043 exit(1);
1044 }
1045
1046 if (!S_ISDIR(file_stat.st_mode))
1047 continue;
1048
1049 /* from this point wl->s is a directory */
1050
1051 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1052 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001053 ha_alert("Cannot open configuration directory %s : %s\n",
1054 wl->s,
1055 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001056 exit(1);
1057 }
1058
1059 /* for each element in the directory wl->s */
1060 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1061 struct dirent *dir_entry = dir_entries[dir_entries_it];
1062 char *filename = NULL;
1063 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1064
1065 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001066 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001067 */
1068 if (dir_entry->d_name[0] == '.' ||
1069 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1070 goto next_dir_entry;
1071
1072 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001073 ha_alert("Cannot load configuration files %s : out of memory.\n",
1074 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001075 exit(1);
1076 }
1077
1078 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001079 ha_alert("Cannot open configuration file %s : %s\n",
1080 wl->s,
1081 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001082 exit(1);
1083 }
1084
1085 /* don't add anything else than regular file in cfg_cfgfiles
1086 * this way we avoid loops
1087 */
1088 if (!S_ISREG(file_stat.st_mode))
1089 goto next_dir_entry;
1090
1091 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001092 ha_alert("Cannot load configuration files %s : %s\n",
1093 filename,
1094 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001095 exit(1);
1096 }
1097
1098next_dir_entry:
1099 free(filename);
1100 free(dir_entry);
1101 }
1102
1103 free(dir_entries);
1104
1105 /* remove the current directory (wl) from cfg_cfgfiles */
1106 free(wl->s);
1107 LIST_DEL(&wl->list);
1108 free(wl);
1109 }
1110
1111 free(err);
1112}
1113
Olivier Houchardf73629d2017-04-05 22:33:04 +02001114static int get_old_sockets(const char *unixsocket)
1115{
1116 char *cmsgbuf = NULL, *tmpbuf = NULL;
1117 int *tmpfd = NULL;
1118 struct sockaddr_un addr;
1119 struct cmsghdr *cmsg;
1120 struct msghdr msghdr;
1121 struct iovec iov;
1122 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001123 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001124 int sock = -1;
1125 int ret = -1;
1126 int ret2 = -1;
1127 int fd_nb;
1128 int got_fd = 0;
1129 int i = 0;
1130 size_t maxoff = 0, curoff = 0;
1131
1132 memset(&msghdr, 0, sizeof(msghdr));
1133 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1134 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001135 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001136 goto out;
1137 }
1138 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1139 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001140 ha_warning("Failed to connect to the old process socket '%s'\n",
1141 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001142 goto out;
1143 }
1144 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1145 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1146 addr.sun_family = PF_UNIX;
1147 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1148 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001149 ha_warning("Failed to connect to the old process socket '%s'\n",
1150 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001151 goto out;
1152 }
Olivier Houchard54740872017-04-06 14:45:14 +02001153 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001154 iov.iov_base = &fd_nb;
1155 iov.iov_len = sizeof(fd_nb);
1156 msghdr.msg_iov = &iov;
1157 msghdr.msg_iovlen = 1;
1158 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1159 /* First, get the number of file descriptors to be received */
1160 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001161 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001162 goto out;
1163 }
1164 if (fd_nb == 0) {
1165 ret = 0;
1166 goto out;
1167 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001168 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001169 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001170 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001171 goto out;
1172 }
1173 tmpfd = malloc(fd_nb * sizeof(int));
1174 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001175 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001176 goto out;
1177 }
1178 msghdr.msg_control = cmsgbuf;
1179 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001180 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001181 do {
1182 int ret3;
1183
1184 iov.iov_base = tmpbuf + curoff;
1185 ret = recvmsg(sock, &msghdr, 0);
1186 if (ret == -1 && errno == EINTR)
1187 continue;
1188 if (ret <= 0)
1189 break;
1190 /* Send an ack to let the sender know we got the sockets
1191 * and it can send some more
1192 */
1193 do {
1194 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1195 } while (ret3 == -1 && errno == EINTR);
1196 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1197 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1198 if (cmsg->cmsg_level == SOL_SOCKET &&
1199 cmsg->cmsg_type == SCM_RIGHTS) {
1200 size_t totlen = cmsg->cmsg_len -
1201 CMSG_LEN(0);
1202 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001203 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001204 goto out;
1205 }
1206 /*
1207 * Be paranoid and use memcpy() to avoid any
1208 * potential alignement issue.
1209 */
1210 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1211 got_fd += totlen / sizeof(int);
1212 }
1213 }
1214 curoff += ret;
1215 } while (got_fd < fd_nb);
1216
1217 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001218 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1219 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001220 goto out;
1221 }
1222 maxoff = curoff;
1223 curoff = 0;
1224 for (i = 0; i < got_fd; i++) {
1225 int fd = tmpfd[i];
1226 socklen_t socklen;
1227 int len;
1228
1229 xfer_sock = calloc(1, sizeof(*xfer_sock));
1230 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001231 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001232 break;
1233 }
1234 xfer_sock->fd = -1;
1235
1236 socklen = sizeof(xfer_sock->addr);
1237 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001238 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001239 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001240 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001241 continue;
1242 }
1243 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001244 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001245 goto out;
1246 }
1247 len = tmpbuf[curoff++];
1248 if (len > 0) {
1249 /* We have a namespace */
1250 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001251 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001252 goto out;
1253 }
1254 xfer_sock->namespace = malloc(len + 1);
1255 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001256 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001257 goto out;
1258 }
1259 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1260 xfer_sock->namespace[len] = 0;
1261 curoff += len;
1262 }
1263 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001264 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001265 goto out;
1266 }
1267 len = tmpbuf[curoff++];
1268 if (len > 0) {
1269 /* We have an interface */
1270 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001271 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001272 goto out;
1273 }
1274 xfer_sock->iface = malloc(len + 1);
1275 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001276 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001277 goto out;
1278 }
1279 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001280 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001281 curoff += len;
1282 }
1283 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001284 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001285 goto out;
1286 }
1287 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1288 sizeof(xfer_sock->options));
1289 curoff += sizeof(xfer_sock->options);
1290
1291 xfer_sock->fd = fd;
1292 if (xfer_sock_list)
1293 xfer_sock_list->prev = xfer_sock;
1294 xfer_sock->next = xfer_sock_list;
1295 xfer_sock->prev = NULL;
1296 xfer_sock_list = xfer_sock;
1297 xfer_sock = NULL;
1298 }
1299
1300 ret2 = 0;
1301out:
1302 /* If we failed midway make sure to close the remaining
1303 * file descriptors
1304 */
1305 if (tmpfd != NULL && i < got_fd) {
1306 for (; i < got_fd; i++) {
1307 close(tmpfd[i]);
1308 }
1309 }
1310 free(tmpbuf);
1311 free(tmpfd);
1312 free(cmsgbuf);
1313 if (sock != -1)
1314 close(sock);
1315 if (xfer_sock) {
1316 free(xfer_sock->namespace);
1317 free(xfer_sock->iface);
1318 if (xfer_sock->fd != -1)
1319 close(xfer_sock->fd);
1320 free(xfer_sock);
1321 }
1322 return (ret2);
1323}
1324
Willy Tarreaubaaee002006-06-26 02:48:02 +02001325/*
William Lallemand73b85e72017-06-01 17:38:51 +02001326 * copy and cleanup the current argv
1327 * Remove the -sf /-st parameters
1328 * Return an allocated copy of argv
1329 */
1330
1331static char **copy_argv(int argc, char **argv)
1332{
1333 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001334 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001335
1336 newargv = calloc(argc + 2, sizeof(char *));
1337 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001338 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001339 return NULL;
1340 }
1341
William Lallemand2bf6d622017-06-20 11:20:23 +02001342 while (i < argc) {
1343 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001344 if (i > 0 && argv[i][0] == '-' &&
1345 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001346 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001347 i++;
1348 while (i < argc && argv[i][0] != '-') {
1349 i++;
1350 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001351 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001352 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001353
1354 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001355 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001356
William Lallemand73b85e72017-06-01 17:38:51 +02001357 return newargv;
1358}
1359
Willy Tarreau5a023f02019-03-01 14:19:31 +01001360/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1361 * setting, and returns it. It may return -1 meaning "unlimited" if some
1362 * unlimited proxies have been found and the global.maxconn value is not yet
1363 * set. It may also return a value greater than maxconn if it's not yet set.
1364 * Note that a value of zero means there is no need for pipes. -1 is never
1365 * returned if global.maxconn is valid.
1366 */
1367static int compute_ideal_maxpipes()
1368{
1369 struct proxy *cur;
1370 int nbfe = 0, nbbe = 0;
1371 int unlimited = 0;
1372 int pipes;
1373 int max;
1374
1375 for (cur = proxies_list; cur; cur = cur->next) {
1376 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1377 if (cur->cap & PR_CAP_FE) {
1378 max = cur->maxconn;
1379 nbfe += max;
1380 if (!max) {
1381 unlimited = 1;
1382 break;
1383 }
1384 }
1385 if (cur->cap & PR_CAP_BE) {
1386 max = cur->fullconn ? cur->fullconn : global.maxconn;
1387 nbbe += max;
1388 if (!max) {
1389 unlimited = 1;
1390 break;
1391 }
1392 }
1393 }
1394 }
1395
1396 pipes = MAX(nbfe, nbbe);
1397 if (global.maxconn) {
1398 if (pipes > global.maxconn || unlimited)
1399 pipes = global.maxconn;
1400 } else if (unlimited) {
1401 pipes = -1;
1402 }
1403
1404 return pipes >= 4 ? pipes / 4 : pipes;
1405}
1406
Willy Tarreauac350932019-03-01 15:43:14 +01001407/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1408 * rlimits and computes an ideal maxconn. It's meant to be called only when
1409 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001410 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1411 * default 100) is returned as it is expected that it will even run on tight
1412 * environments, and will maintain compatibility with previous packages that
1413 * used to rely on this value as the default one. The system will emit a
1414 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001415 */
1416static int compute_ideal_maxconn()
1417{
1418 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1419 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1420 int pipes = compute_ideal_maxpipes();
1421 int remain = rlim_fd_cur_at_boot;
1422 int maxconn;
1423
1424 /* we have to take into account these elements :
1425 * - number of engine_fds, which inflates the number of FD needed per
1426 * connection by this number.
1427 * - number of pipes per connection on average : for the unlimited
1428 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1429 * fixed value of 2*pipes.
1430 * - two FDs per connection
1431 */
1432
1433 /* subtract listeners and checks */
1434 remain -= global.maxsock;
1435
Willy Tarreau3f200852019-03-14 19:13:17 +01001436 /* one epoll_fd/kqueue_fd per thread */
1437 remain -= global.nbthread;
1438
1439 /* one wake-up pipe (2 fd) per thread */
1440 remain -= 2 * global.nbthread;
1441
Willy Tarreauac350932019-03-01 15:43:14 +01001442 /* Fixed pipes values : we only subtract them if they're not larger
1443 * than the remaining FDs because pipes are optional.
1444 */
1445 if (pipes >= 0 && pipes * 2 < remain)
1446 remain -= pipes * 2;
1447
1448 if (pipes < 0) {
1449 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1450 * = maxconn * (2 + 0.5 + engine_fds)
1451 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1452 */
1453 maxconn = 2 * remain / (5 + 2 * engine_fds);
1454 } else {
1455 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1456 * = maxconn * (2 + engine_fds)
1457 */
1458 maxconn = remain / (2 + engine_fds);
1459 }
1460
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001461 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001462}
1463
William Lallemand73b85e72017-06-01 17:38:51 +02001464/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001465 * This function initializes all the necessary variables. It only returns
1466 * if everything is OK. If something fails, it exits.
1467 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001468static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001469{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001470 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001471 char *tmp;
1472 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001473 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001474 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001475 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001476 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001477 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001478 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001479 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001480 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001481
Christopher Faulete3a5e352017-10-24 13:53:54 +02001482 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001483 next_argv = copy_argv(argc, argv);
1484
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001485 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001486 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001487 exit(1);
1488 }
David du Colombier7af46052012-05-16 14:16:48 +02001489
Emeric Brun2b920a12010-09-23 18:30:22 +02001490 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1491 * the string in case of truncation, and at least FreeBSD appears not to do
1492 * it.
1493 */
1494 memset(hostname, 0, sizeof(hostname));
1495 gethostname(hostname, sizeof(hostname) - 1);
1496 memset(localpeer, 0, sizeof(localpeer));
1497 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001498 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001499
Willy Tarreaubaaee002006-06-26 02:48:02 +02001500 /*
1501 * Initialize the previously static variables.
1502 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001503
Willy Tarreau173d9952018-01-26 21:48:23 +01001504 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001505 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001506
Willy Tarreaubaaee002006-06-26 02:48:02 +02001507
1508#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001509 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001510#endif
1511
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001512 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001513 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001514 start_date = now;
1515
Willy Tarreau84310e22014-02-14 11:59:04 +01001516 srandom(now_ms - getpid());
1517
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001518 if (init_acl() != 0)
1519 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001520
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001521 /* Initialise lua. */
1522 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001523
Christopher Fauletff2613e2016-11-09 11:36:17 +01001524 /* Initialize process vars */
1525 vars_init(&global.vars, SCOPE_PROC);
1526
Willy Tarreau43b78992009-01-25 15:42:27 +01001527 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001528#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001529 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001530#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001531#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001532 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001533#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001534#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001535 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001536#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001537#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001538 global.tune.options |= GTUNE_USE_EVPORTS;
1539#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001540#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001541 global.tune.options |= GTUNE_USE_SPLICE;
1542#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001543#if defined(USE_GETADDRINFO)
1544 global.tune.options |= GTUNE_USE_GAI;
1545#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001546#if defined(SO_REUSEPORT)
1547 global.tune.options |= GTUNE_USE_REUSEPORT;
1548#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001549
1550 pid = getpid();
1551 progname = *argv;
1552 while ((tmp = strchr(progname, '/')) != NULL)
1553 progname = tmp + 1;
1554
Kevinm48936af2010-12-22 16:08:21 +00001555 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001556 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001557
Willy Tarreaubaaee002006-06-26 02:48:02 +02001558 argc--; argv++;
1559 while (argc > 0) {
1560 char *flag;
1561
1562 if (**argv == '-') {
1563 flag = *argv+1;
1564
1565 /* 1 arg */
1566 if (*flag == 'v') {
1567 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001568 if (flag[1] == 'v') /* -vv */
1569 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001570 exit(0);
1571 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001572#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001573 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001574 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001575#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001576#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001577 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001578 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001579#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001580#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001581 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001582 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001583#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001584#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001585 else if (*flag == 'd' && flag[1] == 'v')
1586 global.tune.options &= ~GTUNE_USE_EVPORTS;
1587#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001588#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001589 else if (*flag == 'd' && flag[1] == 'S')
1590 global.tune.options &= ~GTUNE_USE_SPLICE;
1591#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001592#if defined(USE_GETADDRINFO)
1593 else if (*flag == 'd' && flag[1] == 'G')
1594 global.tune.options &= ~GTUNE_USE_GAI;
1595#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001596#if defined(SO_REUSEPORT)
1597 else if (*flag == 'd' && flag[1] == 'R')
1598 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1599#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001600 else if (*flag == 'd' && flag[1] == 'V')
1601 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001602 else if (*flag == 'V')
1603 arg_mode |= MODE_VERBOSE;
1604 else if (*flag == 'd' && flag[1] == 'b')
1605 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001606 else if (*flag == 'd' && flag[1] == 'M')
1607 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001608 else if (*flag == 'd' && flag[1] == 'r')
1609 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001610 else if (*flag == 'd')
1611 arg_mode |= MODE_DEBUG;
1612 else if (*flag == 'c')
1613 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001614 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001615 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001616 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001617 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001618#if defined(USE_SYSTEMD)
1619 global.tune.options |= GTUNE_USE_SYSTEMD;
1620#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001621 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 +01001622 usage(progname);
1623#endif
1624 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001625 else if (*flag == 'W')
1626 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001627 else if (*flag == 'q')
1628 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001629 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001630 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001631 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001632 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001633 }
William Lallemand4fc09692017-06-19 16:37:19 +02001634 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001635 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001636 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001637
Olivier Houchardf73629d2017-04-05 22:33:04 +02001638 argv++;
1639 argc--;
1640 }
William Lallemande7361152018-10-26 14:47:36 +02001641 else if (*flag == 'S') {
1642 struct wordlist *c;
1643
1644 if (argc <= 1 || argv[1][0] == '-') {
1645 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1646 usage(progname);
1647 }
1648 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1649 ha_alert("Cannot allocate memory\n");
1650 exit(EXIT_FAILURE);
1651 }
1652 LIST_ADD(&mworker_cli_conf, &c->list);
1653
1654 argv++;
1655 argc--;
1656 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001657 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1658 /* list of pids to finish ('f') or terminate ('t') */
1659
1660 if (flag[1] == 'f')
1661 oldpids_sig = SIGUSR1; /* finish then exit */
1662 else
1663 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001664 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001665 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001666 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1667 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001668 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001669 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001670 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001671 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001672 errno = 0;
1673 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1674 if (errno) {
1675 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1676 flag,
1677 *argv, strerror(errno));
1678 exit(1);
1679 } else if (endptr && strlen(endptr)) {
1680 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001681 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001682 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1683 flag, endptr);
1684 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001685 }
Chris Lane236062f2018-02-05 23:15:44 +00001686 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001687 if (oldpids[nb_oldpids] <= 0)
1688 usage(progname);
1689 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001690 }
1691 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001692 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1693 /* now that's a cfgfile list */
1694 argv++; argc--;
1695 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001696 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001697 ha_alert("Cannot load configuration file/directory %s : %s\n",
1698 *argv,
1699 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001700 exit(1);
1701 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001702 argv++; argc--;
1703 }
1704 break;
1705 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001706 else { /* >=2 args */
1707 argv++; argc--;
1708 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001709 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001710
1711 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001712 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001713 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001714 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001715 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001716 case 'L' :
1717 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1718 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1719 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001720 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001721 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001722 ha_alert("Cannot load configuration file/directory %s : %s\n",
1723 *argv,
1724 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001725 exit(1);
1726 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001727 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001728 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001729 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001730 }
1731 }
1732 }
1733 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001734 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001735 argv++; argc--;
1736 }
1737
Christopher Faulete3a5e352017-10-24 13:53:54 +02001738 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1739 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001740
William Lallemand944e6192018-11-21 15:48:31 +01001741 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001742 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001743 global.mode |= MODE_MWORKER_WAIT;
1744 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001745 }
1746
1747 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1748 atexit_flag = 1;
1749 atexit(reexec_on_failure);
1750 }
1751
Willy Tarreau576132e2011-09-10 19:26:56 +02001752 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001753 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001754 exit(1);
1755 }
1756
Willy Tarreaubaaee002006-06-26 02:48:02 +02001757 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001758
1759 init_default_instance();
1760
William Lallemand944e6192018-11-21 15:48:31 +01001761 /* in wait mode, we don't try to read the configuration files */
1762 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001763 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001764
William Lallemand944e6192018-11-21 15:48:31 +01001765 /* handle cfgfiles that are actually directories */
1766 cfgfiles_expand_directories();
1767
1768 if (LIST_ISEMPTY(&cfg_cfgfiles))
1769 usage(progname);
1770
1771
1772 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1773 int ret;
1774
William Lallemand7b302d82019-05-20 11:15:37 +02001775 if (trash->data)
1776 chunk_appendf(trash, ";");
1777
1778 chunk_appendf(trash, "%s", wl->s);
1779
William Lallemand944e6192018-11-21 15:48:31 +01001780 ret = readcfgfile(wl->s);
1781 if (ret == -1) {
1782 ha_alert("Could not open configuration file %s : %s\n",
1783 wl->s, strerror(errno));
1784 exit(1);
1785 }
1786 if (ret & (ERR_ABORT|ERR_FATAL))
1787 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1788 err_code |= ret;
1789 if (err_code & ERR_ABORT)
1790 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001791 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001792
William Lallemand944e6192018-11-21 15:48:31 +01001793 /* do not try to resolve arguments nor to spot inconsistencies when
1794 * the configuration contains fatal errors caused by files not found
1795 * or failed memory allocations.
1796 */
1797 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1798 ha_alert("Fatal errors found in configuration.\n");
1799 exit(1);
1800 }
William Lallemand7b302d82019-05-20 11:15:37 +02001801 if (trash->data)
1802 setenv("HAPROXY_CFGFILES", trash->area, 1);
1803
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001804 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001805 if (global.mode & MODE_MWORKER) {
1806 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001807 struct mworker_proc *tmproc;
1808
William Lallemand482f9a92019-04-12 16:15:00 +02001809 setenv("HAPROXY_MWORKER", "1", 1);
1810
William Lallemand16dd1b32018-11-19 18:46:18 +01001811 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1812
William Lallemandf3a86832019-04-01 11:29:58 +02001813 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001814 if (!tmproc) {
1815 ha_alert("Cannot allocate process structures.\n");
1816 exit(EXIT_FAILURE);
1817 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001818 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001819 tmproc->reloads = 0;
1820 tmproc->relative_pid = 0;
1821 tmproc->pid = pid;
1822 tmproc->timestamp = start_date.tv_sec;
1823 tmproc->ipc_fd[0] = -1;
1824 tmproc->ipc_fd[1] = -1;
1825
1826 proc_self = tmproc;
1827
1828 LIST_ADDQ(&proc_list, &tmproc->list);
1829 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001830
1831 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001832
William Lallemandf3a86832019-04-01 11:29:58 +02001833 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001834 if (!tmproc) {
1835 ha_alert("Cannot allocate process structures.\n");
1836 exit(EXIT_FAILURE);
1837 }
1838
William Lallemand8f7069a2019-04-12 16:09:23 +02001839 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001840 tmproc->pid = -1;
1841 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001842 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001843 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001844 tmproc->ipc_fd[0] = -1;
1845 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001846
1847 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1848 exit(EXIT_FAILURE);
1849 }
1850
1851 LIST_ADDQ(&proc_list, &tmproc->list);
1852 }
William Lallemand944e6192018-11-21 15:48:31 +01001853 }
1854 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1855 struct wordlist *it, *c;
1856
William Lallemand1b663612018-10-26 14:47:33 +02001857 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001858
William Lallemande7361152018-10-26 14:47:36 +02001859
William Lallemand550db6d2018-11-06 17:37:12 +01001860 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001861
William Lallemand550db6d2018-11-06 17:37:12 +01001862 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001863 ha_alert("Can't create the master's CLI.\n");
1864 exit(EXIT_FAILURE);
1865 }
William Lallemande7361152018-10-26 14:47:36 +02001866
William Lallemand550db6d2018-11-06 17:37:12 +01001867 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1868
1869 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1870 ha_alert("Can't create the master's CLI.\n");
1871 exit(EXIT_FAILURE);
1872 }
1873 LIST_DEL(&c->list);
1874 free(c->s);
1875 free(c);
1876 }
1877 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001878 }
1879
Willy Tarreaubb925012009-07-23 13:36:36 +02001880 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001881 for (px = proxies_list; px; px = px->next) {
1882 struct server *srv;
1883 struct post_proxy_check_fct *ppcf;
1884 struct post_server_check_fct *pscf;
1885
1886 list_for_each_entry(pscf, &post_server_check_list, list) {
1887 for (srv = px->srv; srv; srv = srv->next)
1888 err_code |= pscf->fct(srv);
1889 }
1890 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1891 err_code |= ppcf->fct(px);
1892 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001893 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001894 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001895 exit(1);
1896 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001897
Willy Tarreau0f936722019-04-11 14:47:08 +02001898 pattern_finalize_config();
1899
Willy Tarreau70060452015-12-14 12:46:07 +01001900 /* recompute the amount of per-process memory depending on nbproc and
1901 * the shared SSL cache size (allowed to exist in all processes).
1902 */
1903 if (global.rlimit_memmax_all) {
1904#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1905 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1906
1907 global.rlimit_memmax =
1908 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1909 ssl_cache_bytes) / global.nbproc +
1910 ssl_cache_bytes + 1048575LL) / 1048576LL;
1911#else
1912 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1913#endif
1914 }
1915
Willy Tarreaue5733232019-05-22 19:24:06 +02001916#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001917 err_code |= netns_init();
1918 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001919 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001920 exit(1);
1921 }
1922#endif
1923
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001924 /* Apply server states */
1925 apply_server_state();
1926
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001927 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001928 srv_compute_all_admin_states(px);
1929
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001930 /* Apply servers' configured address */
1931 err_code |= srv_init_addr();
1932 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001933 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001934 exit(1);
1935 }
1936
Willy Tarreaubaaee002006-06-26 02:48:02 +02001937 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001938 struct peers *pr;
1939 struct proxy *px;
1940
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001941 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001942 if (pr->peers_fe)
1943 break;
1944
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001945 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001946 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001947 break;
1948
1949 if (pr || px) {
1950 /* At least one peer or one listener has been found */
1951 qfprintf(stdout, "Configuration file is valid\n");
1952 exit(0);
1953 }
1954 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1955 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001956 }
1957
Emeric Brunc60def82017-09-27 14:59:38 +02001958 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001959 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001960 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001961 exit(1);
1962 }
1963 /* very simple initialization, users will queue the task if needed */
1964 global_listener_queue_task->context = NULL; /* not even a context! */
1965 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001966
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001967 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001968 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001969
Willy Tarreaue6945732016-12-21 19:57:00 +01001970 list_for_each_entry(pcf, &post_check_list, list) {
1971 err_code |= pcf->fct();
1972 if (err_code & (ERR_ABORT|ERR_FATAL))
1973 exit(1);
1974 }
1975
Willy Tarreaubaaee002006-06-26 02:48:02 +02001976 if (cfg_maxconn > 0)
1977 global.maxconn = cfg_maxconn;
1978
Willy Tarreau8d687d82019-03-01 09:39:42 +01001979 if (global.stats_fe)
1980 global.maxsock += global.stats_fe->maxconn;
1981
1982 if (cfg_peers) {
1983 /* peers also need to bypass global maxconn */
1984 struct peers *p = cfg_peers;
1985
1986 for (p = cfg_peers; p; p = p->next)
1987 if (p->peers_fe)
1988 global.maxsock += p->peers_fe->maxconn;
1989 }
1990
Willy Tarreaubaaee002006-06-26 02:48:02 +02001991 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001992 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001993 global.pidfile = strdup(cfg_pidfile);
1994 }
1995
Willy Tarreaud0256482015-01-15 21:45:22 +01001996 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001997 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1998 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1999 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
2000 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01002001 *
2002 * If memmax is set, then it depends on which values are set. If
2003 * maxsslconn is set, we use memmax to determine how many cleartext
2004 * connections may be added, and set maxconn to the sum of the two.
2005 * If maxconn is set and not maxsslconn, maxsslconn is computed from
2006 * the remaining amount of memory between memmax and the cleartext
2007 * connections. If neither are set, then it is considered that all
2008 * connections are SSL-capable, and maxconn is computed based on this,
2009 * then maxsslconn accordingly. We need to know if SSL is used on the
2010 * frontends, backends, or both, because when it's used on both sides,
2011 * we need twice the value for maxsslconn, but we only count the
2012 * handshake once since it is not performed on the two sides at the
2013 * same time (frontend-side is terminated before backend-side begins).
2014 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01002015 * ssl_handshake_cost during its initialization. In any case, if
2016 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
2017 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01002018 */
Willy Tarreauac350932019-03-01 15:43:14 +01002019 ideal_maxconn = compute_ideal_maxconn();
2020
Willy Tarreaud0256482015-01-15 21:45:22 +01002021 if (!global.rlimit_memmax) {
2022 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002023 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002024 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2025 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2026 }
2027 }
2028#ifdef USE_OPENSSL
2029 else if (!global.maxconn && !global.maxsslconn &&
2030 (global.ssl_used_frontend || global.ssl_used_backend)) {
2031 /* memmax is set, compute everything automatically. Here we want
2032 * to ensure that all SSL connections will be served. We take
2033 * care of the number of sides where SSL is used, and consider
2034 * the worst case : SSL used on both sides and doing a handshake
2035 * simultaneously. Note that we can't have more than maxconn
2036 * handshakes at a time by definition, so for the worst case of
2037 * two SSL conns per connection, we count a single handshake.
2038 */
2039 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2040 int64_t mem = global.rlimit_memmax * 1048576ULL;
2041
2042 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2043 mem -= global.maxzlibmem;
2044 mem = mem * MEM_USABLE_RATIO;
2045
2046 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02002047 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01002048 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2049 global.ssl_handshake_max_cost); // 1 handshake per connection max
2050
Willy Tarreauac350932019-03-01 15:43:14 +01002051 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002052 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002053#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002054 if (global.maxconn > SYSTEM_MAXCONN)
2055 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002056#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002057 global.maxsslconn = sides * global.maxconn;
2058 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2059 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2060 global.maxconn, global.maxsslconn);
2061 }
2062 else if (!global.maxsslconn &&
2063 (global.ssl_used_frontend || global.ssl_used_backend)) {
2064 /* memmax and maxconn are known, compute maxsslconn automatically.
2065 * maxsslconn being forced, we don't know how many of it will be
2066 * on each side if both sides are being used. The worst case is
2067 * when all connections use only one SSL instance because
2068 * handshakes may be on two sides at the same time.
2069 */
2070 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2071 int64_t mem = global.rlimit_memmax * 1048576ULL;
2072 int64_t sslmem;
2073
2074 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2075 mem -= global.maxzlibmem;
2076 mem = mem * MEM_USABLE_RATIO;
2077
Willy Tarreau87b09662015-04-03 00:22:06 +02002078 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002079 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2080 global.maxsslconn = round_2dig(global.maxsslconn);
2081
2082 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002083 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2084 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2085 "without SSL is %d, but %d was found and SSL is in use.\n",
2086 global.rlimit_memmax,
2087 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2088 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002089 exit(1);
2090 }
2091
2092 if (global.maxsslconn > sides * global.maxconn)
2093 global.maxsslconn = sides * global.maxconn;
2094
2095 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2096 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2097 }
2098#endif
2099 else if (!global.maxconn) {
2100 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2101 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2102 int64_t mem = global.rlimit_memmax * 1048576ULL;
2103 int64_t clearmem;
2104
2105 if (global.ssl_used_frontend || global.ssl_used_backend)
2106 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2107
2108 mem -= global.maxzlibmem;
2109 mem = mem * MEM_USABLE_RATIO;
2110
2111 clearmem = mem;
2112 if (sides)
2113 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2114
Willy Tarreau87b09662015-04-03 00:22:06 +02002115 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01002116 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002117 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002118#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002119 if (global.maxconn > SYSTEM_MAXCONN)
2120 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002121#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002122
2123 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002124 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2125 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2126 "is %d, but %d was found.\n",
2127 global.rlimit_memmax,
2128 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
2129 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002130 exit(1);
2131 }
2132
2133 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2134 if (sides && global.maxsslconn > sides * global.maxconn) {
2135 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2136 "to be limited to %d. Better reduce global.maxsslconn to get more "
2137 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2138 }
2139 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2140 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002141 }
2142
Willy Tarreau5a023f02019-03-01 14:19:31 +01002143 if (!global.maxpipes)
2144 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002145
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002146 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002147 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002148 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002149 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2150 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2151
Emeric Brunece0c332017-12-06 13:51:49 +01002152 /* compute fd used by async engines */
2153 if (global.ssl_used_async_engines) {
2154 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2155 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2156 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002157
Olivier Houchard88698d92019-04-16 19:07:22 +02002158 /* update connection pool thresholds */
2159 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2160 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2161
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002162 proxy_adjust_all_maxconn();
2163
Willy Tarreau1db37712007-06-03 17:16:49 +02002164 if (global.tune.maxpollevents <= 0)
2165 global.tune.maxpollevents = MAX_POLL_EVENTS;
2166
Olivier Houchard1599b802018-05-24 18:59:04 +02002167 if (global.tune.runqueue_depth <= 0)
2168 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2169
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002170 if (global.tune.recv_enough == 0)
2171 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2172
Willy Tarreau27097842015-09-28 13:53:23 +02002173 if (global.tune.maxrewrite < 0)
2174 global.tune.maxrewrite = MAXREWRITE;
2175
Willy Tarreau27a674e2009-08-17 07:23:33 +02002176 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2177 global.tune.maxrewrite = global.tune.bufsize / 2;
2178
Willy Tarreaubaaee002006-06-26 02:48:02 +02002179 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2180 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002181 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002182 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2183 }
2184
William Lallemand095ba4c2017-06-01 17:38:50 +02002185 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002186 /* command line daemon mode inhibits foreground and debug modes mode */
2187 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002188 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002189 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002190
2191 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002192
William Lallemand095ba4c2017-06-01 17:38:50 +02002193 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002194 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002195 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002196 }
2197
William Lallemand095ba4c2017-06-01 17:38:50 +02002198 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002199 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002200 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 +02002201 global.nbproc = 1;
2202 }
2203
2204 if (global.nbproc < 1)
2205 global.nbproc = 1;
2206
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002207 if (global.nbthread < 1)
2208 global.nbthread = 1;
2209
Christopher Faulet3ef26392017-08-29 16:46:57 +02002210 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002211 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002212 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002213 exit(1);
2214 }
2215
Christopher Faulet96d44832017-11-14 22:02:30 +01002216 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002217 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002218 exit(1);
2219 }
2220
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002221 /*
2222 * Note: we could register external pollers here.
2223 * Built-in pollers have been registered before main().
2224 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002225
Willy Tarreau43b78992009-01-25 15:42:27 +01002226 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002227 disable_poller("kqueue");
2228
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002229 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2230 disable_poller("evports");
2231
Willy Tarreau43b78992009-01-25 15:42:27 +01002232 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002233 disable_poller("epoll");
2234
Willy Tarreau43b78992009-01-25 15:42:27 +01002235 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002236 disable_poller("poll");
2237
Willy Tarreau43b78992009-01-25 15:42:27 +01002238 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002239 disable_poller("select");
2240
2241 /* Note: we could disable any poller by name here */
2242
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002243 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002244 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002245 fprintf(stderr, "\n");
2246 list_filters(stderr);
2247 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002248
Willy Tarreau4f60f162007-04-08 16:39:58 +02002249 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002250 ha_alert("No polling mechanism available.\n"
2251 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2252 " is too low on this platform to support maxconn and the number of listeners\n"
2253 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2254 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2255 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2256 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2257 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2258 " check build settings using 'haproxy -vv'.\n\n",
2259 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002260 exit(1);
2261 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002262 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2263 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002264 }
2265
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002266 if (!global.node)
2267 global.node = strdup(hostname);
2268
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002269 if (!hlua_post_init())
2270 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002271
Maxime de Roucy0f503922016-05-13 23:52:55 +02002272 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002273}
2274
Simon Horman6fb82592011-07-15 13:14:11 +09002275static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002276{
Simon Hormanac821422011-07-15 13:14:09 +09002277 struct acl_term_suite *suite, *suiteb;
2278 struct acl_term *term, *termb;
2279
Simon Horman6fb82592011-07-15 13:14:11 +09002280 if (!cond)
2281 return;
2282
2283 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2284 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2285 LIST_DEL(&term->list);
2286 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002287 }
Simon Horman6fb82592011-07-15 13:14:11 +09002288 LIST_DEL(&suite->list);
2289 free(suite);
2290 }
2291
2292 free(cond);
2293}
2294
2295static void deinit_tcp_rules(struct list *rules)
2296{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002297 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002298
2299 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002300 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002301 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002302 free(trule);
2303 }
2304}
2305
Simon Horman6fb82592011-07-15 13:14:11 +09002306static void deinit_stick_rules(struct list *rules)
2307{
2308 struct sticking_rule *rule, *ruleb;
2309
2310 list_for_each_entry_safe(rule, ruleb, rules, list) {
2311 LIST_DEL(&rule->list);
2312 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002313 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002314 free(rule);
2315 }
2316}
2317
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002318void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002319{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002320 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002321 struct cap_hdr *h,*h_next;
2322 struct server *s,*s_next;
2323 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002324 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002325 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002326 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002327 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002328 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002329 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002330 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002331 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002332 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002333 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002334 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002335 struct post_deinit_fct *pdf;
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002336 struct proxy_deinit_fct *pxdf;
2337 struct server_deinit_fct *srvdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002338 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002339
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002340 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002341 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002342 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002343 free(p->id);
2344 free(p->check_req);
2345 free(p->cookie_name);
2346 free(p->cookie_domain);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002347 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002348 free(p->capture_name);
2349 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002350 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002351 if (p->conf.logformat_string != default_http_log_format &&
2352 p->conf.logformat_string != default_tcp_log_format &&
2353 p->conf.logformat_string != clf_http_log_format)
2354 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002355
Willy Tarreau62a61232013-04-12 18:13:46 +02002356 free(p->conf.lfs_file);
2357 free(p->conf.uniqueid_format_string);
2358 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002359 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2360 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002361
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002362 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2363 free(p->conf.logformat_sd_string);
2364 free(p->conf.lfsd_file);
2365
Willy Tarreaua534fea2008-08-03 12:19:50 +02002366 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002367 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002368
Willy Tarreaub80c2302007-11-30 20:51:32 +01002369 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2370 LIST_DEL(&cond->list);
2371 prune_acl_cond(cond);
2372 free(cond);
2373 }
2374
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002375 /* build a list of unique uri_auths */
2376 if (!ua)
2377 ua = p->uri_auth;
2378 else {
2379 /* check if p->uri_auth is unique */
2380 for (uap = ua; uap; uap=uap->next)
2381 if (uap == p->uri_auth)
2382 break;
2383
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002384 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002385 /* add it, if it is */
2386 p->uri_auth->next = ua;
2387 ua = p->uri_auth;
2388 }
2389 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002390
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002391 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2392 LIST_DEL(&acl->list);
2393 prune_acl(acl);
2394 free(acl);
2395 }
2396
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002397 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2398 LIST_DEL(&srule->list);
2399 prune_acl_cond(srule->cond);
2400 free(srule->cond);
2401 free(srule);
2402 }
2403
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002404 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2405 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002406 if (rule->cond) {
2407 prune_acl_cond(rule->cond);
2408 free(rule->cond);
2409 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002410 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002411 free(rule);
2412 }
2413
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002414 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2415 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002416 if (rdr->cond) {
2417 prune_acl_cond(rdr->cond);
2418 free(rdr->cond);
2419 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002420 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002421 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2422 LIST_DEL(&lf->list);
2423 free(lf);
2424 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002425 free(rdr);
2426 }
2427
William Lallemand0f99e342011-10-12 17:50:54 +02002428 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2429 LIST_DEL(&log->list);
2430 free(log);
2431 }
2432
William Lallemand723b73a2012-02-08 16:37:49 +01002433 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2434 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002435 release_sample_expr(lf->expr);
2436 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002437 free(lf);
2438 }
2439
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002440 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2441 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002442 release_sample_expr(lf->expr);
2443 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002444 free(lf);
2445 }
2446
Simon Hormanac821422011-07-15 13:14:09 +09002447 deinit_tcp_rules(&p->tcp_req.inspect_rules);
Kevin Zhu13ebef72019-01-30 16:01:21 +08002448 deinit_tcp_rules(&p->tcp_rep.inspect_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002449 deinit_tcp_rules(&p->tcp_req.l4_rules);
2450
Simon Horman6fb82592011-07-15 13:14:11 +09002451 deinit_stick_rules(&p->storersp_rules);
2452 deinit_stick_rules(&p->sticking_rules);
2453
Willy Tarreaubaaee002006-06-26 02:48:02 +02002454 h = p->req_cap;
2455 while (h) {
2456 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002457 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002458 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002459 free(h);
2460 h = h_next;
2461 }/* end while(h) */
2462
2463 h = p->rsp_cap;
2464 while (h) {
2465 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002466 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002467 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002468 free(h);
2469 h = h_next;
2470 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002471
Willy Tarreaubaaee002006-06-26 02:48:02 +02002472 s = p->srv;
2473 while (s) {
2474 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002475
Willy Tarreauf6562792019-05-07 19:05:35 +02002476 task_destroy(s->check.task);
2477 task_destroy(s->agent.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002478
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002479 if (s->check.wait_list.tasklet)
2480 tasklet_free(s->check.wait_list.tasklet);
2481 if (s->agent.wait_list.tasklet)
2482 tasklet_free(s->agent.wait_list.tasklet);
Dragan Dosen026ef572019-04-30 00:56:20 +02002483
Willy Tarreauf6562792019-05-07 19:05:35 +02002484 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002485
Willy Tarreaua534fea2008-08-03 12:19:50 +02002486 free(s->id);
2487 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002488 free(s->check.bi.area);
2489 free(s->check.bo.area);
2490 free(s->agent.bi.area);
2491 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002492 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002493 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002494 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002495 free(s->idle_conns);
2496 free(s->priv_conns);
2497 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002498 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002499 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002500
2501 if (s->use_ssl || s->check.use_ssl) {
2502 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2503 xprt_get(XPRT_SSL)->destroy_srv(s);
2504 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002505 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002506
2507 list_for_each_entry(srvdf, &server_deinit_list, list)
2508 srvdf->fct(s);
2509
Willy Tarreaubaaee002006-06-26 02:48:02 +02002510 free(s);
2511 s = s_next;
2512 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002513
Willy Tarreau4348fad2012-09-20 16:48:07 +02002514 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002515 /*
2516 * Zombie proxy, the listener just pretend to be up
2517 * because they still hold an opened fd.
2518 * Close it and give the listener its real state.
2519 */
2520 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2521 close(l->fd);
2522 l->state = LI_INIT;
2523 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002524 unbind_listener(l);
2525 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002526 LIST_DEL(&l->by_fe);
2527 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002528 free(l->name);
2529 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002530 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002531 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002532
Willy Tarreau4348fad2012-09-20 16:48:07 +02002533 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002534 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002535 if (bind_conf->xprt->destroy_bind_conf)
2536 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002537 free(bind_conf->file);
2538 free(bind_conf->arg);
2539 LIST_DEL(&bind_conf->by_fe);
2540 free(bind_conf);
2541 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002542
Christopher Fauletd7c91962015-04-30 11:48:27 +02002543 flt_deinit(p);
2544
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002545 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2546 pxdf->fct(p);
2547
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002548 free(p->desc);
2549 free(p->fwdfor_hdr_name);
2550
Willy Tarreauff011f22011-01-06 17:51:27 +01002551 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002552 free_http_res_rules(&p->http_res_rules);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002553 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002554
Willy Tarreaubafbe012017-11-24 17:34:44 +01002555 pool_destroy(p->req_cap_pool);
2556 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002557 if (p->table)
2558 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002559
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002560 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002561 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002562 HA_SPIN_DESTROY(&p0->lbprm.lock);
2563 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002564 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002565 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002566
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002567 while (ua) {
2568 uap = ua;
2569 ua = ua->next;
2570
Willy Tarreaua534fea2008-08-03 12:19:50 +02002571 free(uap->uri_prefix);
2572 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002573 free(uap->node);
2574 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002575
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002576 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002577 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002578
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002579 free(uap);
2580 }
2581
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002582 userlist_free(userlist);
2583
David Carlier834cb2e2015-09-25 12:02:25 +01002584 cfg_unregister_sections();
2585
Christopher Faulet0132d062017-07-26 15:33:35 +02002586 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002587
Willy Tarreaudd815982007-10-16 12:25:14 +02002588 protocol_unbind_all();
2589
Willy Tarreau05554e62016-12-21 20:46:26 +01002590 list_for_each_entry(pdf, &post_deinit_list, list)
2591 pdf->fct();
2592
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002593 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002594 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002595 free(global.chroot); global.chroot = NULL;
2596 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002597 free(global.node); global.node = NULL;
2598 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002599 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002600 task_destroy(global_listener_queue_task); global_listener_queue_task = NULL;
2601 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002602 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002603
William Lallemand0f99e342011-10-12 17:50:54 +02002604 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2605 LIST_DEL(&log->list);
2606 free(log);
2607 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002608 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002609 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002610 LIST_DEL(&wl->list);
2611 free(wl);
2612 }
2613
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002614 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2615 if (bol->must_free)
2616 free((void *)bol->str);
2617 LIST_DEL(&bol->list);
2618 free(bol);
2619 }
2620
Christopher Fauletff2613e2016-11-09 11:36:17 +01002621 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002622 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002623 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002624} /* end deinit() */
2625
William Lallemand72160322018-11-06 17:37:16 +01002626
Willy Tarreau918ff602011-07-25 16:33:49 +02002627/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002628static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002629{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002630 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002631
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002632 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002633 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002634 /* Process a few tasks */
2635 process_runnable_tasks();
2636
William Lallemand1aab50b2018-06-07 09:46:01 +02002637 /* check if we caught some signals and process them in the
2638 first thread */
2639 if (tid == 0)
2640 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002641
Willy Tarreau58b458d2008-06-29 22:40:23 +02002642 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002643 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002644
Willy Tarreau85c459d2018-08-02 10:54:31 +02002645 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002646 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002647 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002648
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002649 /* also stop if we failed to cleanly stop all tasks */
2650 if (killed > 1)
2651 break;
2652
Willy Tarreau10146c92015-04-13 20:44:19 +02002653 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002654 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002655 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002656 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002657 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002658 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002659 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002660 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2661 __ha_barrier_atomic_store();
Olivier Houchardbba1a262019-09-24 14:55:28 +02002662 if ((global_tasks_mask & tid_bit) || thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002663 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002664 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002665 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002666 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002667 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002668
Willy Tarreau58b458d2008-06-29 22:40:23 +02002669 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002670 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002671
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002672 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002673 }
2674}
2675
Christopher Faulet1d17c102017-08-29 15:38:48 +02002676static void *run_thread_poll_loop(void *data)
2677{
Willy Tarreau082b6282019-05-22 14:42:12 +02002678 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002679 struct per_thread_init_fct *ptif;
2680 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002681 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002682 static int init_left = 0;
2683 __decl_hathreads(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2684 __decl_hathreads(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002685
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002686 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002687 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002688
Willy Tarreauf6178242019-05-21 19:46:58 +02002689#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002690#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002691 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002692#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002693 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002694#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002695#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002696 /* Now, initialize one thread init at a time. This is better since
2697 * some init code is a bit tricky and may release global resources
2698 * after reallocating them locally. This will also ensure there is
2699 * no race on file descriptors allocation.
2700 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002701#ifdef USE_THREAD
2702 pthread_mutex_lock(&init_mutex);
2703#endif
2704 /* The first thread must set the number of threads left */
2705 if (!init_left)
2706 init_left = global.nbthread;
2707 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002708
Christopher Faulet1d17c102017-08-29 15:38:48 +02002709 tv_update_date(-1,-1);
2710
Willy Tarreau082b6282019-05-22 14:42:12 +02002711 /* per-thread alloc calls performed here are not allowed to snoop on
2712 * other threads, so they are free to initialize at their own rhythm
2713 * as long as they act as if they were alone. None of them may rely
2714 * on resources initialized by the other ones.
2715 */
2716 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2717 if (!ptaf->fct()) {
2718 ha_alert("failed to allocate resources for thread %u.\n", tid);
2719 exit(1);
2720 }
2721 }
2722
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002723 /* per-thread init calls performed here are not allowed to snoop on
2724 * other threads, so they are free to initialize at their own rhythm
2725 * as long as they act as if they were alone.
2726 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002727 list_for_each_entry(ptif, &per_thread_init_list, list) {
2728 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002729 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002730 exit(1);
2731 }
2732 }
2733
Willy Tarreau71092822019-06-10 09:51:04 +02002734 /* enabling protocols will result in fd_insert() calls to be performed,
2735 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002736 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002737 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002738 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002739 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002740
Willy Tarreau34a150c2019-06-11 09:16:41 +02002741#ifdef USE_THREAD
2742 pthread_cond_broadcast(&init_cond);
2743 pthread_mutex_unlock(&init_mutex);
2744
2745 /* now wait for other threads to finish starting */
2746 pthread_mutex_lock(&init_mutex);
2747 while (init_left)
2748 pthread_cond_wait(&init_cond, &init_mutex);
2749 pthread_mutex_unlock(&init_mutex);
2750#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002751
Willy Tarreaud96f1122019-12-03 07:07:36 +01002752#if defined(RLIMIT_NPROC)
2753 /* all threads have started, it's now time to prevent any new thread
2754 * or process from starting. Obviously we do this in workers only. We
2755 * can't hard-fail on this one as it really is implementation dependent
2756 * though we're interested in feedback, hence the warning.
2757 */
2758 if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
2759 struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
2760 static int warn_fail;
2761
2762 if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_XADD(&warn_fail, 1)) {
2763 ha_warning("Failed to disable forks, please report to developers with detailed "
2764 "information about your operating system. You can silence this warning "
2765 "by adding 'insecure-fork-wanted' in the 'global' section.\n");
2766 }
2767 }
2768#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02002769 run_poll_loop();
2770
2771 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2772 ptdf->fct();
2773
Willy Tarreau082b6282019-05-22 14:42:12 +02002774 list_for_each_entry(ptff, &per_thread_free_list, list)
2775 ptff->fct();
2776
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002777#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002778 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002779 if (tid > 0)
2780 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002781#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002782 return NULL;
2783}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002784
Willy Tarreaue9b26022011-08-01 20:57:55 +02002785/* This is the global management task for listeners. It enables listeners waiting
2786 * for global resources when there are enough free resource, or at least once in
2787 * a while. It is designed to be called as a task.
2788 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002789static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002790{
2791 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002792 /* queue is empty, nothing to do */
Olivier Houchard859dc802019-08-08 15:47:21 +02002793 if (MT_LIST_ISEMPTY(&global_listener_queue))
Willy Tarreaue9b26022011-08-01 20:57:55 +02002794 goto out;
2795
2796 /* If there are still too many concurrent connections, let's wait for
2797 * some of them to go away. We don't need to re-arm the timer because
2798 * each of them will scan the queue anyway.
2799 */
2800 if (unlikely(actconn >= global.maxconn))
2801 goto out;
2802
2803 /* We should periodically try to enable listeners waiting for a global
2804 * resource here, because it is possible, though very unlikely, that
2805 * they have been blocked by a temporary lack of global resource such
2806 * as a file descriptor or memory and that the temporary condition has
2807 * disappeared.
2808 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002809 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002810
2811 out:
2812 t->expire = next;
2813 task_queue(t);
2814 return t;
2815}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002816
William Dauchyf9af9d72019-11-17 15:47:16 +01002817/* set uid/gid depending on global settings */
2818static void set_identity(const char *program_name)
2819{
2820 if (global.gid) {
2821 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2822 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2823 " without 'uid'/'user' is generally useless.\n", program_name);
2824
2825 if (setgid(global.gid) == -1) {
2826 ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
2827 protocol_unbind_all();
2828 exit(1);
2829 }
2830 }
2831
2832 if (global.uid && setuid(global.uid) == -1) {
2833 ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
2834 protocol_unbind_all();
2835 exit(1);
2836 }
2837}
2838
Willy Tarreaubaaee002006-06-26 02:48:02 +02002839int main(int argc, char **argv)
2840{
2841 int err, retry;
2842 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002843 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002844 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002845
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002846 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002847
Willy Tarreauff9c9142019-02-07 10:39:36 +01002848 /* this can only safely be done here, though it's optimized away by
2849 * the compiler.
2850 */
2851 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2852 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2853 "HAProxy was built with value %d, please fix it and rebuild.\n",
2854 LONGBITS, MAX_PROCS);
2855 exit(1);
2856 }
2857
Willy Tarreaubf696402019-03-01 10:09:28 +01002858 /* take a copy of initial limits before we possibly change them */
2859 getrlimit(RLIMIT_NOFILE, &limit);
2860 rlim_fd_cur_at_boot = limit.rlim_cur;
2861 rlim_fd_max_at_boot = limit.rlim_max;
2862
Willy Tarreau5794fb02018-11-25 18:43:29 +01002863 /* process all initcalls in order of potential dependency */
2864 RUN_INITCALLS(STG_PREPARE);
2865 RUN_INITCALLS(STG_LOCK);
2866 RUN_INITCALLS(STG_ALLOC);
2867 RUN_INITCALLS(STG_POOL);
2868 RUN_INITCALLS(STG_REGISTER);
2869 RUN_INITCALLS(STG_INIT);
2870
Emeric Bruncf20bf12010-10-22 16:06:11 +02002871 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002872 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2873 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2874 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002875 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002876
Willy Tarreaue437c442010-03-17 18:02:46 +01002877 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2878 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2879 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002880 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002881 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002882
Willy Tarreaudc23a922011-02-16 11:10:36 +01002883 /* ulimits */
2884 if (!global.rlimit_nofile)
2885 global.rlimit_nofile = global.maxsock;
2886
2887 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002888 limit.rlim_cur = global.rlimit_nofile;
2889 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2890
Willy Tarreaudc23a922011-02-16 11:10:36 +01002891 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002892 getrlimit(RLIMIT_NOFILE, &limit);
William Dauchy0fec3ab2019-10-27 20:08:11 +01002893 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2894 ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
2895 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
2896 if (!(global.mode & MODE_MWORKER))
2897 exit(1);
2898 }
2899 else {
2900 /* try to set it to the max possible at least */
2901 limit.rlim_cur = limit.rlim_max;
2902 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2903 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002904
William Dauchy0fec3ab2019-10-27 20:08:11 +01002905 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d. "
2906 "This will fail in >= v2.3\n",
2907 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
2908 global.rlimit_nofile = limit.rlim_cur;
2909 }
Willy Tarreaudc23a922011-02-16 11:10:36 +01002910 }
2911 }
2912
2913 if (global.rlimit_memmax) {
2914 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002915 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002916#ifdef RLIMIT_AS
2917 if (setrlimit(RLIMIT_AS, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01002918 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2919 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2920 argv[0], global.rlimit_memmax);
2921 if (!(global.mode & MODE_MWORKER))
2922 exit(1);
2923 }
2924 else
2925 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs."
2926 "This will fail in >= v2.3\n",
2927 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002928 }
2929#else
2930 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01002931 if (global.tune.options & GTUNE_STRICT_LIMITS) {
2932 ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2933 argv[0], global.rlimit_memmax);
2934 if (!(global.mode & MODE_MWORKER))
2935 exit(1);
2936 }
2937 else
2938 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.",
2939 "This will fail in >= v2.3\n",
2940 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002941 }
2942#endif
2943 }
2944
Olivier Houchardf73629d2017-04-05 22:33:04 +02002945 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002946 if (strcmp("/dev/null", old_unixsocket) != 0) {
2947 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002948 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002949 if (!(global.mode & MODE_MWORKER))
2950 exit(1);
2951 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002952 }
2953 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002954 get_cur_unixsocket();
2955
Willy Tarreaubaaee002006-06-26 02:48:02 +02002956 /* We will loop at most 100 times with 10 ms delay each time.
2957 * That's at most 1 second. We only send a signal to old pids
2958 * if we cannot grab at least one port.
2959 */
2960 retry = MAX_START_RETRIES;
2961 err = ERR_NONE;
2962 while (retry >= 0) {
2963 struct timeval w;
2964 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002965 /* exit the loop on no error or fatal error */
2966 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002967 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002968 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002969 break;
2970
2971 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2972 * listening sockets. So on those platforms, it would be wiser to
2973 * simply send SIGUSR1, which will not be undoable.
2974 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002975 if (tell_old_pids(SIGTTOU) == 0) {
2976 /* no need to wait if we can't contact old pids */
2977 retry = 0;
2978 continue;
2979 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002980 /* give some time to old processes to stop listening */
2981 w.tv_sec = 0;
2982 w.tv_usec = 10*1000;
2983 select(0, NULL, NULL, NULL, &w);
2984 retry--;
2985 }
2986
2987 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002988 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002989 if (retry != MAX_START_RETRIES && nb_oldpids) {
2990 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002991 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002992 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002993 exit(1);
2994 }
2995
William Lallemand944e6192018-11-21 15:48:31 +01002996 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002997 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002998 /* Note: we don't have to send anything to the old pids because we
2999 * never stopped them. */
3000 exit(1);
3001 }
3002
Emeric Bruncf20bf12010-10-22 16:06:11 +02003003 err = protocol_bind_all(errmsg, sizeof(errmsg));
3004 if ((err & ~ERR_WARN) != ERR_NONE) {
3005 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01003006 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02003007
Christopher Faulet767a84b2017-11-24 16:50:31 +01003008 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003009 protocol_unbind_all(); /* cleanup everything we can */
3010 if (nb_oldpids)
3011 tell_old_pids(SIGTTIN);
3012 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02003013 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003014 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02003015 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02003016 /* Ok, all listener should now be bound, close any leftover sockets
3017 * the previous process gave us, we don't need them anymore
3018 */
3019 while (xfer_sock_list != NULL) {
3020 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
3021 close(xfer_sock_list->fd);
3022 free(xfer_sock_list->iface);
3023 free(xfer_sock_list->namespace);
3024 free(xfer_sock_list);
3025 xfer_sock_list = tmpxfer;
3026 }
Willy Tarreaudd815982007-10-16 12:25:14 +02003027
Willy Tarreaubaaee002006-06-26 02:48:02 +02003028 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02003029 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
3030 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003031
Willy Tarreaubaaee002006-06-26 02:48:02 +02003032 /* MODE_QUIET can inhibit alerts and warnings below this line */
3033
PiBa-NL149a81a2017-12-25 21:03:31 +01003034 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
3035 /* either stdin/out/err are already closed or should stay as they are. */
3036 if ((global.mode & MODE_DAEMON)) {
3037 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
3038 global.mode &= ~MODE_VERBOSE;
3039 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3040 }
3041 } else {
3042 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
3043 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003044 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01003045 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003046 }
3047
3048 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01003049 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003050 unlink(global.pidfile);
3051 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
3052 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003053 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003054 if (nb_oldpids)
3055 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02003056 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003057 exit(1);
3058 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003059 }
3060
Willy Tarreaub38651a2007-03-24 17:24:39 +01003061 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003062 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
3063 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02003064 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01003065 exit(1);
3066 }
3067
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003068 /* If the user is not root, we'll still let him try the configuration
3069 * but we inform him that unexpected behaviour may occur.
3070 */
3071 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01003072 ha_warning("[%s.main()] Some options which require full privileges"
3073 " might not work well.\n"
3074 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01003075
William Lallemand095ba4c2017-06-01 17:38:50 +02003076 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3077
3078 /* chroot if needed */
3079 if (global.chroot != NULL) {
3080 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003081 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003082 if (nb_oldpids)
3083 tell_old_pids(SIGTTIN);
3084 protocol_unbind_all();
3085 exit(1);
3086 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003087 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003088 }
3089
William Lallemand944e6192018-11-21 15:48:31 +01003090 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003091 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003092
William Lallemand27edc4b2019-05-07 17:49:33 +02003093 /* send a SIGTERM to workers who have a too high reloads number */
3094 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3095 mworker_kill_max_reloads(SIGTERM);
3096
William Lallemand8a361b52017-06-20 11:20:33 +02003097 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3098 nb_oldpids = 0;
3099 free(oldpids);
3100 oldpids = NULL;
3101 }
3102
3103
Willy Tarreaubaaee002006-06-26 02:48:02 +02003104 /* Note that any error at this stage will be fatal because we will not
3105 * be able to restart the old pids.
3106 */
3107
William Dauchyf9af9d72019-11-17 15:47:16 +01003108 if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
3109 set_identity(argv[0]);
Willy Tarreau636848a2019-04-15 19:38:50 +02003110
Willy Tarreaubaaee002006-06-26 02:48:02 +02003111 /* check ulimits */
3112 limit.rlim_cur = limit.rlim_max = 0;
3113 getrlimit(RLIMIT_NOFILE, &limit);
3114 if (limit.rlim_cur < global.maxsock) {
William Dauchy0fec3ab2019-10-27 20:08:11 +01003115 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3116 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3117 "Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3118 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3119 global.maxsock);
3120 if (!(global.mode & MODE_MWORKER))
3121 exit(1);
3122 }
3123 else
3124 ha_alert("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. "
3125 "Please raise 'ulimit-n' to %d or more to avoid any trouble."
3126 "This will fail in >= v2.3\n",
3127 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
3128 global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003129 }
3130
William Lallemand944e6192018-11-21 15:48:31 +01003131 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003132 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003133 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003134 int ret = 0;
3135 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003136 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003137
William Lallemand095ba4c2017-06-01 17:38:50 +02003138 /*
3139 * if daemon + mworker: must fork here to let a master
3140 * process live in background before forking children
3141 */
William Lallemand73b85e72017-06-01 17:38:51 +02003142
3143 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3144 && (global.mode & MODE_MWORKER)
3145 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003146 ret = fork();
3147 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003148 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003149 protocol_unbind_all();
3150 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003151 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003152 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003153 } else /* change the process group ID in the child (master process) */
3154 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003155 }
William Lallemande20b6a62017-06-01 17:38:55 +02003156
William Lallemande20b6a62017-06-01 17:38:55 +02003157
William Lallemanddeed7802017-11-06 11:00:04 +01003158 /* if in master-worker mode, write the PID of the father */
3159 if (global.mode & MODE_MWORKER) {
3160 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003161 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003162 if (pidfd >= 0)
3163 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003164 }
3165
Willy Tarreaubaaee002006-06-26 02:48:02 +02003166 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003167 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003168 if (global.mode & MODE_MWORKER)
3169 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003170 for (proc = 0; proc < global.nbproc; proc++) {
3171 ret = fork();
3172 if (ret < 0) {
3173 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3174 protocol_unbind_all();
3175 exit(1); /* there has been an error */
3176 }
3177 else if (ret == 0) /* child breaks here */
3178 break;
William Lallemand944e6192018-11-21 15:48:31 +01003179 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3180 char pidstr[100];
3181 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
3182 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
3183 }
3184 if (global.mode & MODE_MWORKER) {
3185 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003186
William Lallemand220567e2018-11-21 18:04:53 +01003187 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003188 /* find the right mworker_proc */
3189 list_for_each_entry(child, &proc_list, list) {
3190 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003191 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003192 child->timestamp = now.tv_sec;
3193 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003194 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003195 break;
3196 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003197 }
3198 }
William Lallemandbc193052018-09-11 10:06:26 +02003199
William Lallemand944e6192018-11-21 15:48:31 +01003200 relative_pid++; /* each child will get a different one */
3201 pid_bit <<= 1;
3202 }
3203 } else {
3204 /* wait mode */
3205 global.nbproc = 1;
3206 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003207 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003208
3209#ifdef USE_CPU_AFFINITY
3210 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003211 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003212 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003213#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003214 {
3215 cpuset_t cpuset;
3216 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003217 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003218
3219 CPU_ZERO(&cpuset);
3220 while ((i = ffsl(cpu_map)) > 0) {
3221 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003222 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003223 }
3224 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3225 }
David Carlier5e4c8e22019-09-13 05:12:58 +01003226#elif defined(__linux__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003227 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003228#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003229#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003230 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003231 if (pidfd >= 0) {
3232 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3233 close(pidfd);
3234 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003235
3236 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003237 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003238
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003239 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003240 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003241
3242 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3243 (global.mode & MODE_DAEMON)) {
3244 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003245 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3246 stdio_quiet(-1);
3247
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003248 global.mode &= ~MODE_VERBOSE;
3249 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003250 }
3251
William Lallemandb3f2be32018-09-11 10:06:18 +02003252 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003253 /* should never get there */
3254 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003255 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003256#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003257 ssl_free_dh();
3258#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003259 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003260 }
3261
William Lallemandcb11fd22017-06-01 17:38:52 +02003262 /* child must never use the atexit function */
3263 atexit_flag = 0;
3264
William Lallemandbc193052018-09-11 10:06:26 +02003265 /* close useless master sockets */
3266 if (global.mode & MODE_MWORKER) {
3267 struct mworker_proc *child, *it;
3268 master = 0;
3269
William Lallemand309dc9a2018-10-26 14:47:45 +02003270 mworker_cli_proxy_stop();
3271
William Lallemandbc193052018-09-11 10:06:26 +02003272 /* free proc struct of other processes */
3273 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003274 /* close the FD of the master side for all
3275 * workers, we don't need to close the worker
3276 * side of other workers since it's done with
3277 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003278 if (child->ipc_fd[0] >= 0)
3279 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003280 if (child->relative_pid == relative_pid &&
3281 child->reloads == 0) {
3282 /* keep this struct if this is our pid */
3283 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003284 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003285 }
William Lallemandbc193052018-09-11 10:06:26 +02003286 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003287 mworker_free_child(child);
3288 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003289 }
3290 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003291
William Lallemande1340412017-12-28 16:09:36 +01003292 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3293 devnullfd = open("/dev/null", O_RDWR, 0);
3294 if (devnullfd < 0) {
3295 ha_alert("Cannot open /dev/null\n");
3296 exit(EXIT_FAILURE);
3297 }
3298 }
3299
William Lallemand095ba4c2017-06-01 17:38:50 +02003300 /* Must chroot and setgid/setuid in the children */
3301 /* chroot if needed */
3302 if (global.chroot != NULL) {
3303 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003304 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003305 if (nb_oldpids)
3306 tell_old_pids(SIGTTIN);
3307 protocol_unbind_all();
3308 exit(1);
3309 }
3310 }
3311
3312 free(global.chroot);
3313 global.chroot = NULL;
William Dauchyf9af9d72019-11-17 15:47:16 +01003314 set_identity(argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003315
William Lallemand7f80eb22017-05-26 18:19:55 +02003316 /* pass through every cli socket, and check if it's bound to
3317 * the current process and if it exposes listeners sockets.
3318 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3319 * */
3320
3321 if (global.stats_fe) {
3322 struct bind_conf *bind_conf;
3323
3324 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3325 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3326 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3327 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3328 break;
3329 }
3330 }
3331 }
3332 }
3333
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003334 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003335 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003336 while (px != NULL) {
3337 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003338 if (!(px->bind_proc & (1UL << proc))) {
3339 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3340 zombify_proxy(px);
3341 else
3342 stop_proxy(px);
3343 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003344 }
3345 px = px->next;
3346 }
3347
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003348 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003349 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003350 if (!curpeers->peers_fe)
3351 continue;
3352
3353 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3354 continue;
3355
3356 stop_proxy(curpeers->peers_fe);
3357 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003358 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003359 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003360 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003361 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003362 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003363 curpeers->peers_fe = NULL;
3364 }
3365
William Lallemand2e8fad92018-11-13 16:18:23 +01003366 /*
3367 * This is only done in daemon mode because we might want the
3368 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3369 * we should now close the 3 first FDs to ensure that we can
3370 * detach from the TTY. We MUST NOT do it in other cases since
3371 * it would have already be done, and 0-2 would have been
3372 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003373 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003374 if ((global.mode & MODE_DAEMON) &&
3375 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003376 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003377 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003378 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003379 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3380 }
3381 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003382 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3383 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003384 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003385 }
3386
William Dauchye039f262019-11-17 15:47:15 +01003387 /* try our best to re-enable core dumps depending on system capabilities.
3388 * What is addressed here :
3389 * - remove file size limits
3390 * - remove core size limits
3391 * - mark the process dumpable again if it lost it due to user/group
3392 */
3393 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3394 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3395
3396#if defined(RLIMIT_FSIZE)
3397 if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
3398 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3399 ha_alert("[%s.main()] Failed to set the raise the maximum "
3400 "file size.\n", argv[0]);
3401 if (!(global.mode & MODE_MWORKER))
3402 exit(1);
3403 }
3404 else
3405 ha_warning("[%s.main()] Failed to set the raise the maximum "
3406 "file size. This will fail in >= v2.3\n", argv[0]);
3407 }
3408#endif
3409
3410#if defined(RLIMIT_CORE)
3411 if (setrlimit(RLIMIT_CORE, &limit) == -1) {
3412 if (global.tune.options & GTUNE_STRICT_LIMITS) {
3413 ha_alert("[%s.main()] Failed to set the raise the core "
3414 "dump size.\n", argv[0]);
3415 if (!(global.mode & MODE_MWORKER))
3416 exit(1);
3417 }
3418 else
3419 ha_warning("[%s.main()] Failed to set the raise the core "
3420 "dump size. This will fail in >= v2.3\n", argv[0]);
3421 }
3422#endif
3423
3424#if defined(USE_PRCTL)
3425 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3426 ha_warning("[%s.main()] Failed to set the dumpable flag, "
3427 "no core will be dumped.\n", argv[0]);
3428#endif
3429 }
3430
Christopher Faulete3a5e352017-10-24 13:53:54 +02003431 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003432 /*
3433 * That's it : the central polling loop. Run until we stop.
3434 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003435#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003436 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003437 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003438 int i;
3439
William Lallemand1aab50b2018-06-07 09:46:01 +02003440 /* ensure the signals will be blocked in every thread */
3441 sigfillset(&blocked_sig);
3442 sigdelset(&blocked_sig, SIGPROF);
3443 sigdelset(&blocked_sig, SIGBUS);
3444 sigdelset(&blocked_sig, SIGFPE);
3445 sigdelset(&blocked_sig, SIGILL);
3446 sigdelset(&blocked_sig, SIGSEGV);
3447 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3448
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003449 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003450 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003451 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003452 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003453
Christopher Faulet62519022017-10-16 15:49:32 +02003454#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003455 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003456 if (global.cpu_map.proc_t1[relative_pid-1])
3457 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3458
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003459 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003460 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003461 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003462
Willy Tarreau421f02e2018-01-20 18:19:22 +01003463 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003464 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003465#if defined(__APPLE__)
3466 int j;
3467 unsigned long cpu_map = global.cpu_map.thread[i];
3468
3469 while ((j = ffsl(cpu_map)) > 0) {
3470 thread_affinity_policy_data_t cpu_set = { j - 1 };
3471 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3472 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3473 cpu_map &= ~(1UL << (j - 1));
3474 }
3475#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003476#if defined(__FreeBSD__) || defined(__NetBSD__)
3477 cpuset_t cpuset;
3478#else
3479 cpu_set_t cpuset;
3480#endif
3481 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003482 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003483
3484 CPU_ZERO(&cpuset);
3485
3486 while ((j = ffsl(cpu_map)) > 0) {
3487 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003488 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003489 }
David Carliera92c5ce2019-09-13 05:03:12 +01003490 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003491 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003492#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003493 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003494 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003495#endif /* !USE_CPU_AFFINITY */
3496
William Lallemand1aab50b2018-06-07 09:46:01 +02003497 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003498 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003499
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003500 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003501 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003502
3503 /* Wait the end of other threads */
3504 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003505 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003506
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003507#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3508 show_lock_stats();
3509#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003510 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003511#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003512 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003513 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003514#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003515
3516 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003517 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003518
Willy Tarreaubaaee002006-06-26 02:48:02 +02003519 exit(0);
3520}
3521
3522
3523/*
3524 * Local variables:
3525 * c-indent-level: 8
3526 * c-basic-offset: 8
3527 * End:
3528 */