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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 Tarreau909b9d82019-01-04 18:20:32 +0100546 printf("HA-Proxy version %s %s - https://haproxy.org/\n", haproxy_version, haproxy_date);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200547}
548
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100549static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100550{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100551 struct build_opts_str *item;
552
Willy Tarreau7b066db2007-12-02 11:28:59 +0100553 printf("Build options :"
554#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100555 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100556#endif
557#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100558 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100559#endif
560#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100561 "\n CC = " BUILD_CC
562#endif
563#ifdef BUILD_CFLAGS
564 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100565#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100566#ifdef BUILD_OPTIONS
567 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100568#endif
Willy Tarreau7728ed32019-03-27 13:20:08 +0100569#ifdef BUILD_FEATURES
570 "\n\nFeature list : " BUILD_FEATURES
571#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200572 "\n\nDefault settings :"
Willy Tarreauca783d42019-03-13 10:03:07 +0100573 "\n bufsize = %d, maxrewrite = %d, maxpollevents = %d"
Willy Tarreau27a674e2009-08-17 07:23:33 +0200574 "\n\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100575 BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200576
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100577 list_for_each_entry(item, &build_opts_list, list) {
578 puts(item->str);
579 }
580
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100581 putchar('\n');
582
Willy Tarreaube5b6852009-10-03 18:57:08 +0200583 list_pollers(stdout);
584 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200585 list_mux_proto(stdout);
586 putchar('\n');
Willy Tarreau679bba12019-03-19 08:08:10 +0100587 list_services(stdout);
588 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100589 list_filters(stdout);
590 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100591}
592
Willy Tarreaubaaee002006-06-26 02:48:02 +0200593/*
594 * This function prints the command line usage and exits
595 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100596static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200597{
598 display_version();
599 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200600 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200601 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200602 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100603 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200604 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200605 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200606 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200607 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200608 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100609#if defined(USE_SYSTEMD)
610 " -Ws master-worker mode with systemd notify support.\n"
611#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200612 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200613 " -c check mode : only check config files and exit\n"
Willy Tarreauca783d42019-03-13 10:03:07 +0100614 " -n sets the maximum total # of connections (uses ulimit -n)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200615 " -m limits the usable amount of memory (in MB)\n"
616 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200617 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200618 " -p writes pids of all children to this file\n"
Willy Tarreaue5733232019-05-22 19:24:06 +0200619#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200620 " -de disables epoll() usage even when available\n"
621#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200622#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200623 " -dk disables kqueue() usage even when available\n"
624#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200625#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +0000626 " -dv disables event ports usage even when available\n"
627#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200628#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200629 " -dp disables poll() usage even when available\n"
630#endif
Willy Tarreaue5733232019-05-22 19:24:06 +0200631#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100632 " -dS disables splice usage (broken on old kernels)\n"
633#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200634#if defined(USE_GETADDRINFO)
635 " -dG disables getaddrinfo() usage\n"
636#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000637#if defined(SO_REUSEPORT)
638 " -dR disables SO_REUSEPORT usage\n"
639#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100640 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100641 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200642 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200643 " -x <unix_socket> get listening sockets from a unix socket\n"
William Lallemand63329e32019-06-13 17:03:37 +0200644 " -S <bind>[,<bind options>...] new master CLI\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200645 "\n",
Willy Tarreauca783d42019-03-13 10:03:07 +0100646 name, cfg_maxpconn);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200647 exit(1);
648}
649
650
651
652/*********************************************************************/
653/* more specific functions ***************************************/
654/*********************************************************************/
655
William Lallemand73b85e72017-06-01 17:38:51 +0200656/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
657 * pids the signal was correctly delivered to.
658 */
William Lallemande25473c2019-04-01 11:29:56 +0200659int tell_old_pids(int sig)
William Lallemand73b85e72017-06-01 17:38:51 +0200660{
661 int p;
662 int ret = 0;
663 for (p = 0; p < nb_oldpids; p++)
664 if (kill(oldpids[p], sig) == 0)
665 ret++;
666 return ret;
667}
668
William Lallemand75ea0a02017-11-15 19:02:58 +0100669/*
William Lallemand73b85e72017-06-01 17:38:51 +0200670 * remove a pid forom the olpid array and decrease nb_oldpids
671 * return 1 pid was found otherwise return 0
672 */
673
674int delete_oldpid(int pid)
675{
676 int i;
677
678 for (i = 0; i < nb_oldpids; i++) {
679 if (oldpids[i] == pid) {
680 oldpids[i] = oldpids[nb_oldpids - 1];
681 oldpids[nb_oldpids - 1] = 0;
682 nb_oldpids--;
683 return 1;
684 }
685 }
686 return 0;
687}
688
William Lallemand85b0bd92017-06-01 17:38:53 +0200689
690static void get_cur_unixsocket()
691{
692 /* if -x was used, try to update the stat socket if not available anymore */
693 if (global.stats_fe) {
694 struct bind_conf *bind_conf;
695
696 /* pass through all stats socket */
697 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
698 struct listener *l;
699
700 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
701
702 if (l->addr.ss_family == AF_UNIX &&
703 (bind_conf->level & ACCESS_FD_LISTENERS)) {
704 const struct sockaddr_un *un;
705
706 un = (struct sockaddr_un *)&l->addr;
707 /* priority to old_unixsocket */
708 if (!cur_unixsocket) {
709 cur_unixsocket = strdup(un->sun_path);
710 } else {
711 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
712 free(cur_unixsocket);
713 cur_unixsocket = strdup(old_unixsocket);
714 return;
715 }
716 }
717 }
718 }
719 }
720 }
721 if (!cur_unixsocket && old_unixsocket)
722 cur_unixsocket = strdup(old_unixsocket);
723}
724
William Lallemand73b85e72017-06-01 17:38:51 +0200725/*
726 * When called, this function reexec haproxy with -sf followed by current
Joseph Herlant03420902018-11-15 10:41:50 -0800727 * children PIDs and possibly old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200728 */
William Lallemanda57b7e32018-12-14 21:11:31 +0100729void mworker_reload()
William Lallemand73b85e72017-06-01 17:38:51 +0200730{
731 int next_argc = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200732 char *msg = NULL;
Willy Tarreau8dca1952019-03-01 10:21:55 +0100733 struct rlimit limit;
William Lallemand7c756a82018-11-26 11:53:40 +0100734 struct per_thread_deinit_fct *ptdf;
William Lallemand73b85e72017-06-01 17:38:51 +0200735
736 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100737#if defined(USE_SYSTEMD)
738 if (global.tune.options & GTUNE_USE_SYSTEMD)
739 sd_notify(0, "RELOADING=1");
740#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200741 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
742
William Lallemandbc193052018-09-11 10:06:26 +0200743 mworker_proc_list_to_env(); /* put the children description in the env */
744
William Lallemand7c756a82018-11-26 11:53:40 +0100745 /* during the reload we must ensure that every FDs that can't be
746 * reuse (ie those that are not referenced in the proc_list)
747 * are closed or they will leak. */
748
749 /* close the listeners FD */
750 mworker_cli_proxy_stop();
William Lallemand16866672019-06-24 17:40:48 +0200751
752 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
753 /* close the poller FD and the thread waker pipe FD */
754 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
755 ptdf->fct();
756 if (fdtab)
757 deinit_pollers();
758 }
Willy Tarreau5db847a2019-05-09 14:13:35 +0200759#if defined(USE_OPENSSL) && (HA_OPENSSL_VERSION_NUMBER >= 0x10101000L)
William Lallemand5fdb5b32019-10-15 14:04:08 +0200760 /* close random device FDs */
761 RAND_keep_random_devices_open(0);
Rob Allen56996da2019-05-03 09:11:32 +0100762#endif
William Lallemand7c756a82018-11-26 11:53:40 +0100763
Willy Tarreau8dca1952019-03-01 10:21:55 +0100764 /* restore the initial FD limits */
765 limit.rlim_cur = rlim_fd_cur_at_boot;
766 limit.rlim_max = rlim_fd_max_at_boot;
767 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
768 getrlimit(RLIMIT_NOFILE, &limit);
769 ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
770 rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
771 (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
772 }
773
William Lallemand73b85e72017-06-01 17:38:51 +0200774 /* compute length */
775 while (next_argv[next_argc])
776 next_argc++;
777
William Lallemand85b0bd92017-06-01 17:38:53 +0200778 /* 1 for haproxy -sf, 2 for -x /socket */
William Lallemand3f128872019-04-01 11:29:59 +0200779 next_argv = realloc(next_argv, (next_argc + 1 + 2 + mworker_child_nb() + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200780 if (next_argv == NULL)
781 goto alloc_error;
782
William Lallemand73b85e72017-06-01 17:38:51 +0200783 /* add -sf <PID>* to argv */
William Lallemand3f128872019-04-01 11:29:59 +0200784 if (mworker_child_nb() > 0) {
785 struct mworker_proc *child;
786
William Lallemand73b85e72017-06-01 17:38:51 +0200787 next_argv[next_argc++] = "-sf";
William Lallemand3f128872019-04-01 11:29:59 +0200788
789 list_for_each_entry(child, &proc_list, list) {
William Lallemand8f7069a2019-04-12 16:09:23 +0200790 if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)))
William Lallemand3f128872019-04-01 11:29:59 +0200791 continue;
792 next_argv[next_argc] = memprintf(&msg, "%d", child->pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200793 if (next_argv[next_argc] == NULL)
794 goto alloc_error;
795 msg = NULL;
William Lallemand3f128872019-04-01 11:29:59 +0200796 next_argc++;
William Lallemand73b85e72017-06-01 17:38:51 +0200797 }
798 }
William Lallemand3f128872019-04-01 11:29:59 +0200799
William Lallemand73b85e72017-06-01 17:38:51 +0200800 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200801
William Lallemand2bf6d622017-06-20 11:20:23 +0200802 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200803 if (cur_unixsocket) {
804
William Lallemand2bf6d622017-06-20 11:20:23 +0200805 next_argv[next_argc++] = "-x";
806 next_argv[next_argc++] = (char *)cur_unixsocket;
807 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200808 }
809
Christopher Faulet767a84b2017-11-24 16:50:31 +0100810 ha_warning("Reexecuting Master process\n");
Willy Tarreaue0d86e22019-08-26 10:37:39 +0200811 signal(SIGPROF, SIG_IGN);
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100812 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200813
Christopher Faulet767a84b2017-11-24 16:50:31 +0100814 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100815 return;
816
William Lallemand73b85e72017-06-01 17:38:51 +0200817alloc_error:
Joseph Herlant07a08342018-11-15 10:43:05 -0800818 ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200819 return;
820}
821
William Lallemandb3f2be32018-09-11 10:06:18 +0200822static void mworker_loop()
823{
824
825#if defined(USE_SYSTEMD)
826 if (global.tune.options & GTUNE_USE_SYSTEMD)
827 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
828#endif
Willy Tarreaud83b6c12019-04-18 11:31:36 +0200829 /* Busy polling makes no sense in the master :-) */
830 global.tune.options &= ~GTUNE_BUSY_POLLING;
William Lallemandb3f2be32018-09-11 10:06:18 +0200831
William Lallemandbc193052018-09-11 10:06:26 +0200832 master = 1;
833
William Lallemand0564d412018-11-20 17:36:53 +0100834 signal_unregister(SIGUSR1);
835 signal_unregister(SIGHUP);
836 signal_unregister(SIGQUIT);
837
William Lallemandb3f2be32018-09-11 10:06:18 +0200838 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
839 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
840 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
841 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
842 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
843 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
844
845 mworker_unblock_signals();
846 mworker_cleanlisteners();
William Lallemand27f3fa52018-12-06 14:05:20 +0100847 mworker_cleantasks();
William Lallemandb3f2be32018-09-11 10:06:18 +0200848
William Lallemandbc193052018-09-11 10:06:26 +0200849 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
850 some SIGCHLD were lost */
851
William Lallemandb3f2be32018-09-11 10:06:18 +0200852 global.nbthread = 1;
853 relative_pid = 1;
854 pid_bit = 1;
Willy Tarreaua38a7172019-02-02 17:11:28 +0100855 all_proc_mask = 1;
William Lallemandb3f2be32018-09-11 10:06:18 +0200856
William Lallemand2672eb92018-12-14 15:52:39 +0100857#ifdef USE_THREAD
858 tid_bit = 1;
859 all_threads_mask = 1;
860#endif
861
William Lallemandb3f2be32018-09-11 10:06:18 +0200862 jobs++; /* this is the "master" job, we want to take care of the
863 signals even if there is no listener so the poll loop don't
864 leave */
865
866 fork_poller();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +0200867 run_thread_poll_loop(0);
William Lallemandb3f2be32018-09-11 10:06:18 +0200868}
William Lallemandcb11fd22017-06-01 17:38:52 +0200869
870/*
871 * Reexec the process in failure mode, instead of exiting
872 */
873void reexec_on_failure()
874{
875 if (!atexit_flag)
876 return;
877
878 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
879
Christopher Faulet767a84b2017-11-24 16:50:31 +0100880 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200881 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200882}
William Lallemand73b85e72017-06-01 17:38:51 +0200883
884
885/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200886 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
887 * a signal zero to all subscribers. This means that it's as easy as
888 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200889 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100890static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200891{
892 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200893 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100894 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200895}
896
897/*
898 * upon SIGTTOU, we pause everything
899 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100900static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200901{
902 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100903 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200904}
905
906/*
907 * upon SIGTTIN, let's have a soft stop.
908 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100909static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200910{
Willy Tarreaube58c382011-07-24 18:28:10 +0200911 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200912}
913
914/*
915 * this function dumps every server's state when the process receives SIGHUP.
916 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100917static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200918{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100919 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200920
Christopher Faulet767a84b2017-11-24 16:50:31 +0100921 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200922 while (p) {
923 struct server *s = p->srv;
924
925 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
926 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100927 chunk_printf(&trash,
928 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
929 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200930 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100931 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200932 ha_warning("%s\n", trash.area);
933 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200934 s = s->next;
935 }
936
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200937 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
938 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100939 chunk_printf(&trash,
940 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
941 p->id,
942 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 +0200943 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100944 chunk_printf(&trash,
945 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
946 p->id,
947 (p->srv_bck) ? "is running on backup servers" : "has no server available",
948 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 +0200949 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100950 chunk_printf(&trash,
951 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
952 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
953 p->id, p->srv_act, p->srv_bck,
954 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 +0200955 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200956 ha_warning("%s\n", trash.area);
957 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200958
959 p = p->next;
960 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200961}
962
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100963static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200964{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200965 /* dump memory usage then free everything possible */
966 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100967 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200968}
969
William Lallemande1340412017-12-28 16:09:36 +0100970/*
971 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
972 * If <fd> < 0, it opens /dev/null and use it to dup
973 *
974 * In the case of chrooting, you have to open /dev/null before the chroot, and
975 * pass the <fd> to this function
976 */
977static void stdio_quiet(int fd)
978{
979 if (fd < 0)
980 fd = open("/dev/null", O_RDWR, 0);
981
982 if (fd > -1) {
983 fclose(stdin);
984 fclose(stdout);
985 fclose(stderr);
986
987 dup2(fd, 0);
988 dup2(fd, 1);
989 dup2(fd, 2);
990 if (fd > 2)
991 close(fd);
992 return;
993 }
994
995 ha_alert("Cannot open /dev/null\n");
996 exit(EXIT_FAILURE);
997}
998
999
Joseph Herlant03420902018-11-15 10:41:50 -08001000/* This function checks if cfg_cfgfiles contains directories.
1001 * If it finds one, it adds all the files (and only files) it contains
1002 * in cfg_cfgfiles in place of the directory (and removes the directory).
1003 * It adds the files in lexical order.
1004 * It adds only files with .cfg extension.
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001005 * It doesn't add files with name starting with '.'
1006 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001007static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001008{
1009 struct wordlist *wl, *wlb;
1010 char *err = NULL;
1011
1012 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1013 struct stat file_stat;
1014 struct dirent **dir_entries = NULL;
1015 int dir_entries_nb;
1016 int dir_entries_it;
1017
1018 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001019 ha_alert("Cannot open configuration file/directory %s : %s\n",
1020 wl->s,
1021 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001022 exit(1);
1023 }
1024
1025 if (!S_ISDIR(file_stat.st_mode))
1026 continue;
1027
1028 /* from this point wl->s is a directory */
1029
1030 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1031 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001032 ha_alert("Cannot open configuration directory %s : %s\n",
1033 wl->s,
1034 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001035 exit(1);
1036 }
1037
1038 /* for each element in the directory wl->s */
1039 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1040 struct dirent *dir_entry = dir_entries[dir_entries_it];
1041 char *filename = NULL;
1042 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1043
1044 /* don't add filename that begin with .
Joseph Herlant03420902018-11-15 10:41:50 -08001045 * only add filename with .cfg extension
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001046 */
1047 if (dir_entry->d_name[0] == '.' ||
1048 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1049 goto next_dir_entry;
1050
1051 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001052 ha_alert("Cannot load configuration files %s : out of memory.\n",
1053 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001054 exit(1);
1055 }
1056
1057 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001058 ha_alert("Cannot open configuration file %s : %s\n",
1059 wl->s,
1060 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001061 exit(1);
1062 }
1063
1064 /* don't add anything else than regular file in cfg_cfgfiles
1065 * this way we avoid loops
1066 */
1067 if (!S_ISREG(file_stat.st_mode))
1068 goto next_dir_entry;
1069
1070 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001071 ha_alert("Cannot load configuration files %s : %s\n",
1072 filename,
1073 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001074 exit(1);
1075 }
1076
1077next_dir_entry:
1078 free(filename);
1079 free(dir_entry);
1080 }
1081
1082 free(dir_entries);
1083
1084 /* remove the current directory (wl) from cfg_cfgfiles */
1085 free(wl->s);
1086 LIST_DEL(&wl->list);
1087 free(wl);
1088 }
1089
1090 free(err);
1091}
1092
Olivier Houchardf73629d2017-04-05 22:33:04 +02001093static int get_old_sockets(const char *unixsocket)
1094{
1095 char *cmsgbuf = NULL, *tmpbuf = NULL;
1096 int *tmpfd = NULL;
1097 struct sockaddr_un addr;
1098 struct cmsghdr *cmsg;
1099 struct msghdr msghdr;
1100 struct iovec iov;
1101 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001102 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001103 int sock = -1;
1104 int ret = -1;
1105 int ret2 = -1;
1106 int fd_nb;
1107 int got_fd = 0;
1108 int i = 0;
1109 size_t maxoff = 0, curoff = 0;
1110
1111 memset(&msghdr, 0, sizeof(msghdr));
1112 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1113 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001114 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001115 goto out;
1116 }
1117 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1118 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001119 ha_warning("Failed to connect to the old process socket '%s'\n",
1120 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001121 goto out;
1122 }
1123 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1124 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1125 addr.sun_family = PF_UNIX;
1126 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1127 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001128 ha_warning("Failed to connect to the old process socket '%s'\n",
1129 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001130 goto out;
1131 }
Olivier Houchard54740872017-04-06 14:45:14 +02001132 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001133 iov.iov_base = &fd_nb;
1134 iov.iov_len = sizeof(fd_nb);
1135 msghdr.msg_iov = &iov;
1136 msghdr.msg_iovlen = 1;
1137 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1138 /* First, get the number of file descriptors to be received */
1139 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001140 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001141 goto out;
1142 }
1143 if (fd_nb == 0) {
1144 ret = 0;
1145 goto out;
1146 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001147 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001148 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001149 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001150 goto out;
1151 }
1152 tmpfd = malloc(fd_nb * sizeof(int));
1153 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001154 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001155 goto out;
1156 }
1157 msghdr.msg_control = cmsgbuf;
1158 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001159 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001160 do {
1161 int ret3;
1162
1163 iov.iov_base = tmpbuf + curoff;
1164 ret = recvmsg(sock, &msghdr, 0);
1165 if (ret == -1 && errno == EINTR)
1166 continue;
1167 if (ret <= 0)
1168 break;
1169 /* Send an ack to let the sender know we got the sockets
1170 * and it can send some more
1171 */
1172 do {
1173 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1174 } while (ret3 == -1 && errno == EINTR);
1175 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1176 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1177 if (cmsg->cmsg_level == SOL_SOCKET &&
1178 cmsg->cmsg_type == SCM_RIGHTS) {
1179 size_t totlen = cmsg->cmsg_len -
1180 CMSG_LEN(0);
1181 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001182 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001183 goto out;
1184 }
1185 /*
1186 * Be paranoid and use memcpy() to avoid any
1187 * potential alignement issue.
1188 */
1189 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1190 got_fd += totlen / sizeof(int);
1191 }
1192 }
1193 curoff += ret;
1194 } while (got_fd < fd_nb);
1195
1196 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001197 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1198 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001199 goto out;
1200 }
1201 maxoff = curoff;
1202 curoff = 0;
1203 for (i = 0; i < got_fd; i++) {
1204 int fd = tmpfd[i];
1205 socklen_t socklen;
1206 int len;
1207
1208 xfer_sock = calloc(1, sizeof(*xfer_sock));
1209 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001210 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001211 break;
1212 }
1213 xfer_sock->fd = -1;
1214
1215 socklen = sizeof(xfer_sock->addr);
1216 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001217 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001218 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001219 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001220 continue;
1221 }
1222 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001223 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001224 goto out;
1225 }
1226 len = tmpbuf[curoff++];
1227 if (len > 0) {
1228 /* We have a namespace */
1229 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001230 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001231 goto out;
1232 }
1233 xfer_sock->namespace = malloc(len + 1);
1234 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001235 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001236 goto out;
1237 }
1238 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1239 xfer_sock->namespace[len] = 0;
1240 curoff += len;
1241 }
1242 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001243 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001244 goto out;
1245 }
1246 len = tmpbuf[curoff++];
1247 if (len > 0) {
1248 /* We have an interface */
1249 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001250 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001251 goto out;
1252 }
1253 xfer_sock->iface = malloc(len + 1);
1254 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001255 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001256 goto out;
1257 }
1258 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001259 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001260 curoff += len;
1261 }
1262 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001263 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001264 goto out;
1265 }
1266 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1267 sizeof(xfer_sock->options));
1268 curoff += sizeof(xfer_sock->options);
1269
1270 xfer_sock->fd = fd;
1271 if (xfer_sock_list)
1272 xfer_sock_list->prev = xfer_sock;
1273 xfer_sock->next = xfer_sock_list;
1274 xfer_sock->prev = NULL;
1275 xfer_sock_list = xfer_sock;
1276 xfer_sock = NULL;
1277 }
1278
1279 ret2 = 0;
1280out:
1281 /* If we failed midway make sure to close the remaining
1282 * file descriptors
1283 */
1284 if (tmpfd != NULL && i < got_fd) {
1285 for (; i < got_fd; i++) {
1286 close(tmpfd[i]);
1287 }
1288 }
1289 free(tmpbuf);
1290 free(tmpfd);
1291 free(cmsgbuf);
1292 if (sock != -1)
1293 close(sock);
1294 if (xfer_sock) {
1295 free(xfer_sock->namespace);
1296 free(xfer_sock->iface);
1297 if (xfer_sock->fd != -1)
1298 close(xfer_sock->fd);
1299 free(xfer_sock);
1300 }
1301 return (ret2);
1302}
1303
Willy Tarreaubaaee002006-06-26 02:48:02 +02001304/*
William Lallemand73b85e72017-06-01 17:38:51 +02001305 * copy and cleanup the current argv
1306 * Remove the -sf /-st parameters
1307 * Return an allocated copy of argv
1308 */
1309
1310static char **copy_argv(int argc, char **argv)
1311{
1312 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001313 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001314
1315 newargv = calloc(argc + 2, sizeof(char *));
1316 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001317 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001318 return NULL;
1319 }
1320
William Lallemand2bf6d622017-06-20 11:20:23 +02001321 while (i < argc) {
1322 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001323 if (i > 0 && argv[i][0] == '-' &&
1324 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001325 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001326 i++;
1327 while (i < argc && argv[i][0] != '-') {
1328 i++;
1329 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001330 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001331 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001332
1333 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001334 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001335
William Lallemand73b85e72017-06-01 17:38:51 +02001336 return newargv;
1337}
1338
Willy Tarreau5a023f02019-03-01 14:19:31 +01001339/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
1340 * setting, and returns it. It may return -1 meaning "unlimited" if some
1341 * unlimited proxies have been found and the global.maxconn value is not yet
1342 * set. It may also return a value greater than maxconn if it's not yet set.
1343 * Note that a value of zero means there is no need for pipes. -1 is never
1344 * returned if global.maxconn is valid.
1345 */
1346static int compute_ideal_maxpipes()
1347{
1348 struct proxy *cur;
1349 int nbfe = 0, nbbe = 0;
1350 int unlimited = 0;
1351 int pipes;
1352 int max;
1353
1354 for (cur = proxies_list; cur; cur = cur->next) {
1355 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1356 if (cur->cap & PR_CAP_FE) {
1357 max = cur->maxconn;
1358 nbfe += max;
1359 if (!max) {
1360 unlimited = 1;
1361 break;
1362 }
1363 }
1364 if (cur->cap & PR_CAP_BE) {
1365 max = cur->fullconn ? cur->fullconn : global.maxconn;
1366 nbbe += max;
1367 if (!max) {
1368 unlimited = 1;
1369 break;
1370 }
1371 }
1372 }
1373 }
1374
1375 pipes = MAX(nbfe, nbbe);
1376 if (global.maxconn) {
1377 if (pipes > global.maxconn || unlimited)
1378 pipes = global.maxconn;
1379 } else if (unlimited) {
1380 pipes = -1;
1381 }
1382
1383 return pipes >= 4 ? pipes / 4 : pipes;
1384}
1385
Willy Tarreauac350932019-03-01 15:43:14 +01001386/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
1387 * rlimits and computes an ideal maxconn. It's meant to be called only when
1388 * maxsock contains the sum of listening FDs, before it is updated based on
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001389 * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
1390 * default 100) is returned as it is expected that it will even run on tight
1391 * environments, and will maintain compatibility with previous packages that
1392 * used to rely on this value as the default one. The system will emit a
1393 * warning indicating how many FDs are missing anyway if needed.
Willy Tarreauac350932019-03-01 15:43:14 +01001394 */
1395static int compute_ideal_maxconn()
1396{
1397 int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1398 int engine_fds = global.ssl_used_async_engines * ssl_sides;
1399 int pipes = compute_ideal_maxpipes();
1400 int remain = rlim_fd_cur_at_boot;
1401 int maxconn;
1402
1403 /* we have to take into account these elements :
1404 * - number of engine_fds, which inflates the number of FD needed per
1405 * connection by this number.
1406 * - number of pipes per connection on average : for the unlimited
1407 * case, this is 0.5 pipe FDs per connection, otherwise it's a
1408 * fixed value of 2*pipes.
1409 * - two FDs per connection
1410 */
1411
1412 /* subtract listeners and checks */
1413 remain -= global.maxsock;
1414
Willy Tarreau3f200852019-03-14 19:13:17 +01001415 /* one epoll_fd/kqueue_fd per thread */
1416 remain -= global.nbthread;
1417
1418 /* one wake-up pipe (2 fd) per thread */
1419 remain -= 2 * global.nbthread;
1420
Willy Tarreauac350932019-03-01 15:43:14 +01001421 /* Fixed pipes values : we only subtract them if they're not larger
1422 * than the remaining FDs because pipes are optional.
1423 */
1424 if (pipes >= 0 && pipes * 2 < remain)
1425 remain -= pipes * 2;
1426
1427 if (pipes < 0) {
1428 /* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
1429 * = maxconn * (2 + 0.5 + engine_fds)
1430 * = maxconn * (4 + 1 + 2*engine_fds) / 2
1431 */
1432 maxconn = 2 * remain / (5 + 2 * engine_fds);
1433 } else {
1434 /* maxsock = maxconn * 2 + maxconn * engine_fds.
1435 * = maxconn * (2 + engine_fds)
1436 */
1437 maxconn = remain / (2 + engine_fds);
1438 }
1439
Willy Tarreaudf23c0c2019-03-13 10:10:49 +01001440 return MAX(maxconn, DEFAULT_MAXCONN);
Willy Tarreauac350932019-03-01 15:43:14 +01001441}
1442
William Lallemand73b85e72017-06-01 17:38:51 +02001443/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001444 * This function initializes all the necessary variables. It only returns
1445 * if everything is OK. If something fails, it exits.
1446 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001447static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001448{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001449 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001450 char *tmp;
1451 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001452 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001453 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001454 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001455 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001456 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001457 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001458 struct post_check_fct *pcf;
Willy Tarreauac350932019-03-01 15:43:14 +01001459 int ideal_maxconn;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001460
Christopher Faulete3a5e352017-10-24 13:53:54 +02001461 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001462 next_argv = copy_argv(argc, argv);
1463
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001464 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001465 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001466 exit(1);
1467 }
David du Colombier7af46052012-05-16 14:16:48 +02001468
Emeric Brun2b920a12010-09-23 18:30:22 +02001469 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1470 * the string in case of truncation, and at least FreeBSD appears not to do
1471 * it.
1472 */
1473 memset(hostname, 0, sizeof(hostname));
1474 gethostname(hostname, sizeof(hostname) - 1);
1475 memset(localpeer, 0, sizeof(localpeer));
1476 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001477 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001478
Willy Tarreaubaaee002006-06-26 02:48:02 +02001479 /*
1480 * Initialize the previously static variables.
1481 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001482
Willy Tarreau173d9952018-01-26 21:48:23 +01001483 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001484 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001485
Willy Tarreaubaaee002006-06-26 02:48:02 +02001486
1487#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001488 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001489#endif
1490
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001491 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001492 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001493 start_date = now;
1494
Willy Tarreau84310e22014-02-14 11:59:04 +01001495 srandom(now_ms - getpid());
1496
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001497 if (init_acl() != 0)
1498 exit(1);
Willy Tarreaub6b3df32018-11-26 16:31:20 +01001499
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001500 /* Initialise lua. */
1501 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001502
Christopher Fauletff2613e2016-11-09 11:36:17 +01001503 /* Initialize process vars */
1504 vars_init(&global.vars, SCOPE_PROC);
1505
Willy Tarreau43b78992009-01-25 15:42:27 +01001506 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaue5733232019-05-22 19:24:06 +02001507#if defined(USE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001508 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001509#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001510#if defined(USE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001511 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001512#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001513#if defined(USE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001514 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001515#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001516#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001517 global.tune.options |= GTUNE_USE_EVPORTS;
1518#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001519#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001520 global.tune.options |= GTUNE_USE_SPLICE;
1521#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001522#if defined(USE_GETADDRINFO)
1523 global.tune.options |= GTUNE_USE_GAI;
1524#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001525#if defined(SO_REUSEPORT)
1526 global.tune.options |= GTUNE_USE_REUSEPORT;
1527#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001528
1529 pid = getpid();
1530 progname = *argv;
1531 while ((tmp = strchr(progname, '/')) != NULL)
1532 progname = tmp + 1;
1533
Kevinm48936af2010-12-22 16:08:21 +00001534 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001535 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001536
Willy Tarreaubaaee002006-06-26 02:48:02 +02001537 argc--; argv++;
1538 while (argc > 0) {
1539 char *flag;
1540
1541 if (**argv == '-') {
1542 flag = *argv+1;
1543
1544 /* 1 arg */
1545 if (*flag == 'v') {
1546 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001547 if (flag[1] == 'v') /* -vv */
1548 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001549 exit(0);
1550 }
Willy Tarreaue5733232019-05-22 19:24:06 +02001551#if defined(USE_EPOLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001552 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001553 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001554#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001555#if defined(USE_POLL)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001556 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001557 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001558#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001559#if defined(USE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001560 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001561 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001562#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001563#if defined(USE_EVPORTS)
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00001564 else if (*flag == 'd' && flag[1] == 'v')
1565 global.tune.options &= ~GTUNE_USE_EVPORTS;
1566#endif
Willy Tarreaue5733232019-05-22 19:24:06 +02001567#if defined(USE_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001568 else if (*flag == 'd' && flag[1] == 'S')
1569 global.tune.options &= ~GTUNE_USE_SPLICE;
1570#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001571#if defined(USE_GETADDRINFO)
1572 else if (*flag == 'd' && flag[1] == 'G')
1573 global.tune.options &= ~GTUNE_USE_GAI;
1574#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001575#if defined(SO_REUSEPORT)
1576 else if (*flag == 'd' && flag[1] == 'R')
1577 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1578#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001579 else if (*flag == 'd' && flag[1] == 'V')
1580 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001581 else if (*flag == 'V')
1582 arg_mode |= MODE_VERBOSE;
1583 else if (*flag == 'd' && flag[1] == 'b')
1584 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001585 else if (*flag == 'd' && flag[1] == 'M')
1586 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001587 else if (*flag == 'd' && flag[1] == 'r')
1588 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001589 else if (*flag == 'd')
1590 arg_mode |= MODE_DEBUG;
1591 else if (*flag == 'c')
1592 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001593 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001594 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001595 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001596 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001597#if defined(USE_SYSTEMD)
1598 global.tune.options |= GTUNE_USE_SYSTEMD;
1599#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001600 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 +01001601 usage(progname);
1602#endif
1603 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001604 else if (*flag == 'W')
1605 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001606 else if (*flag == 'q')
1607 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001608 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001609 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001610 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001611 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001612 }
William Lallemand4fc09692017-06-19 16:37:19 +02001613 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001614 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001615 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001616
Olivier Houchardf73629d2017-04-05 22:33:04 +02001617 argv++;
1618 argc--;
1619 }
William Lallemande7361152018-10-26 14:47:36 +02001620 else if (*flag == 'S') {
1621 struct wordlist *c;
1622
1623 if (argc <= 1 || argv[1][0] == '-') {
1624 ha_alert("Socket and optional bind parameters expected with the -S flag\n");
1625 usage(progname);
1626 }
1627 if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
1628 ha_alert("Cannot allocate memory\n");
1629 exit(EXIT_FAILURE);
1630 }
1631 LIST_ADD(&mworker_cli_conf, &c->list);
1632
1633 argv++;
1634 argc--;
1635 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001636 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1637 /* list of pids to finish ('f') or terminate ('t') */
1638
1639 if (flag[1] == 'f')
1640 oldpids_sig = SIGUSR1; /* finish then exit */
1641 else
1642 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001643 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001644 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001645 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1646 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001647 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001648 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001649 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001650 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001651 errno = 0;
1652 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1653 if (errno) {
1654 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1655 flag,
1656 *argv, strerror(errno));
1657 exit(1);
1658 } else if (endptr && strlen(endptr)) {
1659 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001660 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001661 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1662 flag, endptr);
1663 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001664 }
Chris Lane236062f2018-02-05 23:15:44 +00001665 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001666 if (oldpids[nb_oldpids] <= 0)
1667 usage(progname);
1668 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001669 }
1670 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001671 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1672 /* now that's a cfgfile list */
1673 argv++; argc--;
1674 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001675 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001676 ha_alert("Cannot load configuration file/directory %s : %s\n",
1677 *argv,
1678 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001679 exit(1);
1680 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001681 argv++; argc--;
1682 }
1683 break;
1684 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001685 else { /* >=2 args */
1686 argv++; argc--;
1687 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001688 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001689
1690 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001691 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001692 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001693 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001694 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001695 case 'L' :
1696 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1697 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1698 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001699 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001700 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001701 ha_alert("Cannot load configuration file/directory %s : %s\n",
1702 *argv,
1703 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001704 exit(1);
1705 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001706 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001707 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001708 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001709 }
1710 }
1711 }
1712 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001713 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001714 argv++; argc--;
1715 }
1716
Christopher Faulete3a5e352017-10-24 13:53:54 +02001717 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1718 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001719
William Lallemand944e6192018-11-21 15:48:31 +01001720 if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
William Lallemandcb11fd22017-06-01 17:38:52 +02001721 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemand944e6192018-11-21 15:48:31 +01001722 global.mode |= MODE_MWORKER_WAIT;
1723 global.mode &= ~MODE_MWORKER;
William Lallemandcb11fd22017-06-01 17:38:52 +02001724 }
1725
1726 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1727 atexit_flag = 1;
1728 atexit(reexec_on_failure);
1729 }
1730
Willy Tarreau576132e2011-09-10 19:26:56 +02001731 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001732 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001733 exit(1);
1734 }
1735
Willy Tarreaubaaee002006-06-26 02:48:02 +02001736 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001737
1738 init_default_instance();
1739
William Lallemand944e6192018-11-21 15:48:31 +01001740 /* in wait mode, we don't try to read the configuration files */
1741 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand7b302d82019-05-20 11:15:37 +02001742 struct buffer *trash = get_trash_chunk();
Willy Tarreauc4382422009-12-06 13:10:44 +01001743
William Lallemand944e6192018-11-21 15:48:31 +01001744 /* handle cfgfiles that are actually directories */
1745 cfgfiles_expand_directories();
1746
1747 if (LIST_ISEMPTY(&cfg_cfgfiles))
1748 usage(progname);
1749
1750
1751 list_for_each_entry(wl, &cfg_cfgfiles, list) {
1752 int ret;
1753
William Lallemand7b302d82019-05-20 11:15:37 +02001754 if (trash->data)
1755 chunk_appendf(trash, ";");
1756
1757 chunk_appendf(trash, "%s", wl->s);
1758
William Lallemand944e6192018-11-21 15:48:31 +01001759 ret = readcfgfile(wl->s);
1760 if (ret == -1) {
1761 ha_alert("Could not open configuration file %s : %s\n",
1762 wl->s, strerror(errno));
1763 exit(1);
1764 }
1765 if (ret & (ERR_ABORT|ERR_FATAL))
1766 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
1767 err_code |= ret;
1768 if (err_code & ERR_ABORT)
1769 exit(1);
Willy Tarreauc4382422009-12-06 13:10:44 +01001770 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001771
William Lallemand944e6192018-11-21 15:48:31 +01001772 /* do not try to resolve arguments nor to spot inconsistencies when
1773 * the configuration contains fatal errors caused by files not found
1774 * or failed memory allocations.
1775 */
1776 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1777 ha_alert("Fatal errors found in configuration.\n");
1778 exit(1);
1779 }
William Lallemand7b302d82019-05-20 11:15:37 +02001780 if (trash->data)
1781 setenv("HAPROXY_CFGFILES", trash->area, 1);
1782
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001783 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001784 if (global.mode & MODE_MWORKER) {
1785 int proc;
William Lallemand16dd1b32018-11-19 18:46:18 +01001786 struct mworker_proc *tmproc;
1787
William Lallemand482f9a92019-04-12 16:15:00 +02001788 setenv("HAPROXY_MWORKER", "1", 1);
1789
William Lallemand16dd1b32018-11-19 18:46:18 +01001790 if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
1791
William Lallemandf3a86832019-04-01 11:29:58 +02001792 tmproc = calloc(1, sizeof(*tmproc));
William Lallemand16dd1b32018-11-19 18:46:18 +01001793 if (!tmproc) {
1794 ha_alert("Cannot allocate process structures.\n");
1795 exit(EXIT_FAILURE);
1796 }
William Lallemand8f7069a2019-04-12 16:09:23 +02001797 tmproc->options |= PROC_O_TYPE_MASTER; /* master */
William Lallemand16dd1b32018-11-19 18:46:18 +01001798 tmproc->reloads = 0;
1799 tmproc->relative_pid = 0;
1800 tmproc->pid = pid;
1801 tmproc->timestamp = start_date.tv_sec;
1802 tmproc->ipc_fd[0] = -1;
1803 tmproc->ipc_fd[1] = -1;
1804
1805 proc_self = tmproc;
1806
1807 LIST_ADDQ(&proc_list, &tmproc->list);
1808 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001809
1810 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandce83b4a2018-10-26 14:47:30 +02001811
William Lallemandf3a86832019-04-01 11:29:58 +02001812 tmproc = calloc(1, sizeof(*tmproc));
William Lallemandce83b4a2018-10-26 14:47:30 +02001813 if (!tmproc) {
1814 ha_alert("Cannot allocate process structures.\n");
1815 exit(EXIT_FAILURE);
1816 }
1817
William Lallemand8f7069a2019-04-12 16:09:23 +02001818 tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
William Lallemandce83b4a2018-10-26 14:47:30 +02001819 tmproc->pid = -1;
1820 tmproc->reloads = 0;
William Lallemande3683302018-11-19 18:46:17 +01001821 tmproc->timestamp = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001822 tmproc->relative_pid = 1 + proc;
William Lallemand550db6d2018-11-06 17:37:12 +01001823 tmproc->ipc_fd[0] = -1;
1824 tmproc->ipc_fd[1] = -1;
William Lallemandce83b4a2018-10-26 14:47:30 +02001825
1826 if (mworker_cli_sockpair_new(tmproc, proc) < 0) {
1827 exit(EXIT_FAILURE);
1828 }
1829
1830 LIST_ADDQ(&proc_list, &tmproc->list);
1831 }
William Lallemand944e6192018-11-21 15:48:31 +01001832 }
1833 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
1834 struct wordlist *it, *c;
1835
William Lallemand1b663612018-10-26 14:47:33 +02001836 mworker_env_to_proc_list(); /* get the info of the children in the env */
William Lallemand8a022572018-10-26 14:47:35 +02001837
William Lallemande7361152018-10-26 14:47:36 +02001838
William Lallemand550db6d2018-11-06 17:37:12 +01001839 if (!LIST_ISEMPTY(&mworker_cli_conf)) {
William Lallemande7361152018-10-26 14:47:36 +02001840
William Lallemand550db6d2018-11-06 17:37:12 +01001841 if (mworker_cli_proxy_create() < 0) {
William Lallemande7361152018-10-26 14:47:36 +02001842 ha_alert("Can't create the master's CLI.\n");
1843 exit(EXIT_FAILURE);
1844 }
William Lallemande7361152018-10-26 14:47:36 +02001845
William Lallemand550db6d2018-11-06 17:37:12 +01001846 list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
1847
1848 if (mworker_cli_proxy_new_listener(c->s) < 0) {
1849 ha_alert("Can't create the master's CLI.\n");
1850 exit(EXIT_FAILURE);
1851 }
1852 LIST_DEL(&c->list);
1853 free(c->s);
1854 free(c);
1855 }
1856 }
William Lallemandce83b4a2018-10-26 14:47:30 +02001857 }
1858
Willy Tarreaubb925012009-07-23 13:36:36 +02001859 err_code |= check_config_validity();
Christopher Fauletc1692962019-08-12 09:51:07 +02001860 for (px = proxies_list; px; px = px->next) {
1861 struct server *srv;
1862 struct post_proxy_check_fct *ppcf;
1863 struct post_server_check_fct *pscf;
1864
1865 list_for_each_entry(pscf, &post_server_check_list, list) {
1866 for (srv = px->srv; srv; srv = srv->next)
1867 err_code |= pscf->fct(srv);
1868 }
1869 list_for_each_entry(ppcf, &post_proxy_check_list, list)
1870 err_code |= ppcf->fct(px);
1871 }
Willy Tarreaubb925012009-07-23 13:36:36 +02001872 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001873 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001874 exit(1);
1875 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001876
Willy Tarreau0f936722019-04-11 14:47:08 +02001877 pattern_finalize_config();
1878
Willy Tarreau70060452015-12-14 12:46:07 +01001879 /* recompute the amount of per-process memory depending on nbproc and
1880 * the shared SSL cache size (allowed to exist in all processes).
1881 */
1882 if (global.rlimit_memmax_all) {
1883#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1884 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1885
1886 global.rlimit_memmax =
1887 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1888 ssl_cache_bytes) / global.nbproc +
1889 ssl_cache_bytes + 1048575LL) / 1048576LL;
1890#else
1891 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1892#endif
1893 }
1894
Willy Tarreaue5733232019-05-22 19:24:06 +02001895#ifdef USE_NS
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001896 err_code |= netns_init();
1897 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001898 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001899 exit(1);
1900 }
1901#endif
1902
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001903 /* Apply server states */
1904 apply_server_state();
1905
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001906 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001907 srv_compute_all_admin_states(px);
1908
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001909 /* Apply servers' configured address */
1910 err_code |= srv_init_addr();
1911 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001912 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001913 exit(1);
1914 }
1915
Willy Tarreaubaaee002006-06-26 02:48:02 +02001916 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001917 struct peers *pr;
1918 struct proxy *px;
1919
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001920 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001921 if (pr->peers_fe)
1922 break;
1923
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001924 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001925 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001926 break;
1927
1928 if (pr || px) {
1929 /* At least one peer or one listener has been found */
1930 qfprintf(stdout, "Configuration file is valid\n");
1931 exit(0);
1932 }
1933 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1934 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001935 }
1936
Emeric Brunc60def82017-09-27 14:59:38 +02001937 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001938 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001939 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001940 exit(1);
1941 }
1942 /* very simple initialization, users will queue the task if needed */
1943 global_listener_queue_task->context = NULL; /* not even a context! */
1944 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001945
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001946 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001947 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001948
Willy Tarreaue6945732016-12-21 19:57:00 +01001949 list_for_each_entry(pcf, &post_check_list, list) {
1950 err_code |= pcf->fct();
1951 if (err_code & (ERR_ABORT|ERR_FATAL))
1952 exit(1);
1953 }
1954
Willy Tarreaubaaee002006-06-26 02:48:02 +02001955 if (cfg_maxconn > 0)
1956 global.maxconn = cfg_maxconn;
1957
Willy Tarreau8d687d82019-03-01 09:39:42 +01001958 if (global.stats_fe)
1959 global.maxsock += global.stats_fe->maxconn;
1960
1961 if (cfg_peers) {
1962 /* peers also need to bypass global maxconn */
1963 struct peers *p = cfg_peers;
1964
1965 for (p = cfg_peers; p; p = p->next)
1966 if (p->peers_fe)
1967 global.maxsock += p->peers_fe->maxconn;
1968 }
1969
Willy Tarreaubaaee002006-06-26 02:48:02 +02001970 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001971 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001972 global.pidfile = strdup(cfg_pidfile);
1973 }
1974
Willy Tarreaud0256482015-01-15 21:45:22 +01001975 /* Now we want to compute the maxconn and possibly maxsslconn values.
Willy Tarreauac350932019-03-01 15:43:14 +01001976 * It's a bit tricky. Maxconn defaults to the pre-computed value based
1977 * on rlim_fd_cur and the number of FDs in use due to the configuration,
1978 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
1979 * enforce a lower limit based on memmax.
Willy Tarreaud0256482015-01-15 21:45:22 +01001980 *
1981 * If memmax is set, then it depends on which values are set. If
1982 * maxsslconn is set, we use memmax to determine how many cleartext
1983 * connections may be added, and set maxconn to the sum of the two.
1984 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1985 * the remaining amount of memory between memmax and the cleartext
1986 * connections. If neither are set, then it is considered that all
1987 * connections are SSL-capable, and maxconn is computed based on this,
1988 * then maxsslconn accordingly. We need to know if SSL is used on the
1989 * frontends, backends, or both, because when it's used on both sides,
1990 * we need twice the value for maxsslconn, but we only count the
1991 * handshake once since it is not performed on the two sides at the
1992 * same time (frontend-side is terminated before backend-side begins).
1993 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001994 * ssl_handshake_cost during its initialization. In any case, if
1995 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1996 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001997 */
Willy Tarreauac350932019-03-01 15:43:14 +01001998 ideal_maxconn = compute_ideal_maxconn();
1999
Willy Tarreaud0256482015-01-15 21:45:22 +01002000 if (!global.rlimit_memmax) {
2001 if (global.maxconn == 0) {
Willy Tarreauac350932019-03-01 15:43:14 +01002002 global.maxconn = ideal_maxconn;
Willy Tarreaud0256482015-01-15 21:45:22 +01002003 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2004 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
2005 }
2006 }
2007#ifdef USE_OPENSSL
2008 else if (!global.maxconn && !global.maxsslconn &&
2009 (global.ssl_used_frontend || global.ssl_used_backend)) {
2010 /* memmax is set, compute everything automatically. Here we want
2011 * to ensure that all SSL connections will be served. We take
2012 * care of the number of sides where SSL is used, and consider
2013 * the worst case : SSL used on both sides and doing a handshake
2014 * simultaneously. Note that we can't have more than maxconn
2015 * handshakes at a time by definition, so for the worst case of
2016 * two SSL conns per connection, we count a single handshake.
2017 */
2018 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2019 int64_t mem = global.rlimit_memmax * 1048576ULL;
2020
2021 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2022 mem -= global.maxzlibmem;
2023 mem = mem * MEM_USABLE_RATIO;
2024
2025 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02002026 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01002027 sides * global.ssl_session_max_cost + // SSL buffers, one per side
2028 global.ssl_handshake_max_cost); // 1 handshake per connection max
2029
Willy Tarreauac350932019-03-01 15:43:14 +01002030 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002031 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002032#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002033 if (global.maxconn > SYSTEM_MAXCONN)
2034 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002035#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002036 global.maxsslconn = sides * global.maxconn;
2037 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2038 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
2039 global.maxconn, global.maxsslconn);
2040 }
2041 else if (!global.maxsslconn &&
2042 (global.ssl_used_frontend || global.ssl_used_backend)) {
2043 /* memmax and maxconn are known, compute maxsslconn automatically.
2044 * maxsslconn being forced, we don't know how many of it will be
2045 * on each side if both sides are being used. The worst case is
2046 * when all connections use only one SSL instance because
2047 * handshakes may be on two sides at the same time.
2048 */
2049 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2050 int64_t mem = global.rlimit_memmax * 1048576ULL;
2051 int64_t sslmem;
2052
2053 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2054 mem -= global.maxzlibmem;
2055 mem = mem * MEM_USABLE_RATIO;
2056
Willy Tarreau87b09662015-04-03 00:22:06 +02002057 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01002058 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
2059 global.maxsslconn = round_2dig(global.maxsslconn);
2060
2061 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002062 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
2063 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2064 "without SSL is %d, but %d was found and SSL is in use.\n",
2065 global.rlimit_memmax,
2066 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
2067 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002068 exit(1);
2069 }
2070
2071 if (global.maxsslconn > sides * global.maxconn)
2072 global.maxsslconn = sides * global.maxconn;
2073
2074 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
2075 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
2076 }
2077#endif
2078 else if (!global.maxconn) {
2079 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
2080 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2081 int64_t mem = global.rlimit_memmax * 1048576ULL;
2082 int64_t clearmem;
2083
2084 if (global.ssl_used_frontend || global.ssl_used_backend)
2085 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
2086
2087 mem -= global.maxzlibmem;
2088 mem = mem * MEM_USABLE_RATIO;
2089
2090 clearmem = mem;
2091 if (sides)
2092 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
2093
Willy Tarreau87b09662015-04-03 00:22:06 +02002094 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreauac350932019-03-01 15:43:14 +01002095 global.maxconn = MIN(global.maxconn, ideal_maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002096 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01002097#ifdef SYSTEM_MAXCONN
Willy Tarreauca783d42019-03-13 10:03:07 +01002098 if (global.maxconn > SYSTEM_MAXCONN)
2099 global.maxconn = SYSTEM_MAXCONN;
Willy Tarreau474b96a2015-01-28 19:03:21 +01002100#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01002101
2102 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002103 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
2104 "high for the global.memmax value (%d MB). The absolute maximum possible value "
2105 "is %d, but %d was found.\n",
2106 global.rlimit_memmax,
2107 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
2108 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01002109 exit(1);
2110 }
2111
2112 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2113 if (sides && global.maxsslconn > sides * global.maxconn) {
2114 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
2115 "to be limited to %d. Better reduce global.maxsslconn to get more "
2116 "room for extra connections.\n", global.maxsslconn, global.maxconn);
2117 }
2118 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
2119 }
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002120 }
2121
Willy Tarreau5a023f02019-03-01 14:19:31 +01002122 if (!global.maxpipes)
2123 global.maxpipes = compute_ideal_maxpipes();
Willy Tarreau66aa61f2009-01-18 21:44:07 +01002124
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002125 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002126 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01002127 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreau2c58b412019-03-14 19:10:55 +01002128 global.maxsock += global.nbthread; /* one epoll_fd/kqueue_fd per thread */
2129 global.maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
2130
Emeric Brunece0c332017-12-06 13:51:49 +01002131 /* compute fd used by async engines */
2132 if (global.ssl_used_async_engines) {
2133 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
2134 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
2135 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002136
Olivier Houchard88698d92019-04-16 19:07:22 +02002137 /* update connection pool thresholds */
2138 global.tune.pool_low_count = ((long long)global.maxsock * global.tune.pool_low_ratio + 99) / 100;
2139 global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
2140
Willy Tarreauc8d5b952019-02-27 17:25:52 +01002141 proxy_adjust_all_maxconn();
2142
Willy Tarreau1db37712007-06-03 17:16:49 +02002143 if (global.tune.maxpollevents <= 0)
2144 global.tune.maxpollevents = MAX_POLL_EVENTS;
2145
Olivier Houchard1599b802018-05-24 18:59:04 +02002146 if (global.tune.runqueue_depth <= 0)
2147 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
2148
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01002149 if (global.tune.recv_enough == 0)
2150 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
2151
Willy Tarreau27097842015-09-28 13:53:23 +02002152 if (global.tune.maxrewrite < 0)
2153 global.tune.maxrewrite = MAXREWRITE;
2154
Willy Tarreau27a674e2009-08-17 07:23:33 +02002155 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
2156 global.tune.maxrewrite = global.tune.bufsize / 2;
2157
Willy Tarreaubaaee002006-06-26 02:48:02 +02002158 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
2159 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02002160 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002161 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
2162 }
2163
William Lallemand095ba4c2017-06-01 17:38:50 +02002164 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002165 /* command line daemon mode inhibits foreground and debug modes mode */
2166 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02002167 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002168 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02002169
2170 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002171
William Lallemand095ba4c2017-06-01 17:38:50 +02002172 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002173 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002174 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002175 }
2176
William Lallemand095ba4c2017-06-01 17:38:50 +02002177 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002178 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002179 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 +02002180 global.nbproc = 1;
2181 }
2182
2183 if (global.nbproc < 1)
2184 global.nbproc = 1;
2185
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002186 if (global.nbthread < 1)
2187 global.nbthread = 1;
2188
Christopher Faulet3ef26392017-08-29 16:46:57 +02002189 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002190 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002191 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002192 exit(1);
2193 }
2194
Christopher Faulet96d44832017-11-14 22:02:30 +01002195 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002196 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002197 exit(1);
2198 }
2199
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002200 /*
2201 * Note: we could register external pollers here.
2202 * Built-in pollers have been registered before main().
2203 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002204
Willy Tarreau43b78992009-01-25 15:42:27 +01002205 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002206 disable_poller("kqueue");
2207
Emmanuel Hocdet0ba4f482019-04-08 16:53:32 +00002208 if (!(global.tune.options & GTUNE_USE_EVPORTS))
2209 disable_poller("evports");
2210
Willy Tarreau43b78992009-01-25 15:42:27 +01002211 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002212 disable_poller("epoll");
2213
Willy Tarreau43b78992009-01-25 15:42:27 +01002214 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002215 disable_poller("poll");
2216
Willy Tarreau43b78992009-01-25 15:42:27 +01002217 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002218 disable_poller("select");
2219
2220 /* Note: we could disable any poller by name here */
2221
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002222 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002223 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002224 fprintf(stderr, "\n");
2225 list_filters(stderr);
2226 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002227
Willy Tarreau4f60f162007-04-08 16:39:58 +02002228 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002229 ha_alert("No polling mechanism available.\n"
2230 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2231 " is too low on this platform to support maxconn and the number of listeners\n"
2232 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2233 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2234 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2235 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2236 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2237 " check build settings using 'haproxy -vv'.\n\n",
2238 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002239 exit(1);
2240 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002241 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2242 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002243 }
2244
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002245 if (!global.node)
2246 global.node = strdup(hostname);
2247
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002248 if (!hlua_post_init())
2249 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002250
Maxime de Roucy0f503922016-05-13 23:52:55 +02002251 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002252}
2253
Simon Horman6fb82592011-07-15 13:14:11 +09002254static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002255{
Simon Hormanac821422011-07-15 13:14:09 +09002256 struct acl_term_suite *suite, *suiteb;
2257 struct acl_term *term, *termb;
2258
Simon Horman6fb82592011-07-15 13:14:11 +09002259 if (!cond)
2260 return;
2261
2262 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2263 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2264 LIST_DEL(&term->list);
2265 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002266 }
Simon Horman6fb82592011-07-15 13:14:11 +09002267 LIST_DEL(&suite->list);
2268 free(suite);
2269 }
2270
2271 free(cond);
2272}
2273
2274static void deinit_tcp_rules(struct list *rules)
2275{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002276 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002277
2278 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002279 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002280 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002281 free(trule);
2282 }
2283}
2284
Simon Horman6fb82592011-07-15 13:14:11 +09002285static void deinit_stick_rules(struct list *rules)
2286{
2287 struct sticking_rule *rule, *ruleb;
2288
2289 list_for_each_entry_safe(rule, ruleb, rules, list) {
2290 LIST_DEL(&rule->list);
2291 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002292 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002293 free(rule);
2294 }
2295}
2296
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002297void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002298{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002299 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002300 struct cap_hdr *h,*h_next;
2301 struct server *s,*s_next;
2302 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002303 struct acl_cond *cond, *condb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002304 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002305 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002306 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002307 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002308 struct wordlist *wl, *wlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002309 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002310 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002311 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002312 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002313 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002314 struct post_deinit_fct *pdf;
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002315 struct proxy_deinit_fct *pxdf;
2316 struct server_deinit_fct *srvdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002317 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002318
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002319 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002320 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002321 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002322 free(p->id);
2323 free(p->check_req);
2324 free(p->cookie_name);
2325 free(p->cookie_domain);
Willy Tarreau4c03d1c2019-01-14 15:23:54 +01002326 free(p->lbprm.arg_str);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002327 free(p->capture_name);
2328 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002329 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002330 if (p->conf.logformat_string != default_http_log_format &&
2331 p->conf.logformat_string != default_tcp_log_format &&
2332 p->conf.logformat_string != clf_http_log_format)
2333 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002334
Willy Tarreau62a61232013-04-12 18:13:46 +02002335 free(p->conf.lfs_file);
2336 free(p->conf.uniqueid_format_string);
2337 free(p->conf.uif_file);
Willy Tarreau0cac26c2019-01-14 16:55:42 +01002338 if ((p->lbprm.algo & BE_LB_LKUP) == BE_LB_LKUP_MAP)
2339 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002340
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002341 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2342 free(p->conf.logformat_sd_string);
2343 free(p->conf.lfsd_file);
2344
Willy Tarreaua534fea2008-08-03 12:19:50 +02002345 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002346 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002347
Willy Tarreaub80c2302007-11-30 20:51:32 +01002348 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2349 LIST_DEL(&cond->list);
2350 prune_acl_cond(cond);
2351 free(cond);
2352 }
2353
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002354 /* build a list of unique uri_auths */
2355 if (!ua)
2356 ua = p->uri_auth;
2357 else {
2358 /* check if p->uri_auth is unique */
2359 for (uap = ua; uap; uap=uap->next)
2360 if (uap == p->uri_auth)
2361 break;
2362
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002363 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002364 /* add it, if it is */
2365 p->uri_auth->next = ua;
2366 ua = p->uri_auth;
2367 }
2368 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002369
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002370 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2371 LIST_DEL(&acl->list);
2372 prune_acl(acl);
2373 free(acl);
2374 }
2375
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002376 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2377 LIST_DEL(&srule->list);
2378 prune_acl_cond(srule->cond);
2379 free(srule->cond);
2380 free(srule);
2381 }
2382
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002383 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2384 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002385 if (rule->cond) {
2386 prune_acl_cond(rule->cond);
2387 free(rule->cond);
2388 }
Dragan Dosen2a7c20f2019-04-30 00:38:36 +02002389 free(rule->file);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002390 free(rule);
2391 }
2392
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002393 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2394 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002395 if (rdr->cond) {
2396 prune_acl_cond(rdr->cond);
2397 free(rdr->cond);
2398 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002399 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002400 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2401 LIST_DEL(&lf->list);
2402 free(lf);
2403 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002404 free(rdr);
2405 }
2406
William Lallemand0f99e342011-10-12 17:50:54 +02002407 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2408 LIST_DEL(&log->list);
2409 free(log);
2410 }
2411
William Lallemand723b73a2012-02-08 16:37:49 +01002412 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2413 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002414 release_sample_expr(lf->expr);
2415 free(lf->arg);
William Lallemand723b73a2012-02-08 16:37:49 +01002416 free(lf);
2417 }
2418
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002419 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2420 LIST_DEL(&lf->list);
Dragan Dosen61302da2019-04-30 00:40:02 +02002421 release_sample_expr(lf->expr);
2422 free(lf->arg);
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002423 free(lf);
2424 }
2425
Simon Hormanac821422011-07-15 13:14:09 +09002426 deinit_tcp_rules(&p->tcp_req.inspect_rules);
Kevin Zhu13ebef72019-01-30 16:01:21 +08002427 deinit_tcp_rules(&p->tcp_rep.inspect_rules);
Simon Hormanac821422011-07-15 13:14:09 +09002428 deinit_tcp_rules(&p->tcp_req.l4_rules);
2429
Simon Horman6fb82592011-07-15 13:14:11 +09002430 deinit_stick_rules(&p->storersp_rules);
2431 deinit_stick_rules(&p->sticking_rules);
2432
Willy Tarreaubaaee002006-06-26 02:48:02 +02002433 h = p->req_cap;
2434 while (h) {
2435 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002436 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002437 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002438 free(h);
2439 h = h_next;
2440 }/* end while(h) */
2441
2442 h = p->rsp_cap;
2443 while (h) {
2444 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002445 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002446 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002447 free(h);
2448 h = h_next;
2449 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002450
Willy Tarreaubaaee002006-06-26 02:48:02 +02002451 s = p->srv;
2452 while (s) {
2453 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002454
Willy Tarreauf6562792019-05-07 19:05:35 +02002455 task_destroy(s->check.task);
2456 task_destroy(s->agent.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002457
Willy Tarreau3c39a7d2019-06-14 14:42:29 +02002458 if (s->check.wait_list.tasklet)
2459 tasklet_free(s->check.wait_list.tasklet);
2460 if (s->agent.wait_list.tasklet)
2461 tasklet_free(s->agent.wait_list.tasklet);
Dragan Dosen026ef572019-04-30 00:56:20 +02002462
Willy Tarreauf6562792019-05-07 19:05:35 +02002463 task_destroy(s->warmup);
Willy Tarreau2e993902011-10-31 11:53:20 +01002464
Willy Tarreaua534fea2008-08-03 12:19:50 +02002465 free(s->id);
2466 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002467 free(s->check.bi.area);
2468 free(s->check.bo.area);
2469 free(s->agent.bi.area);
2470 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002471 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002472 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002473 free((char*)s->conf.file);
Olivier Houchard7fc3be72018-11-22 18:50:54 +01002474 free(s->idle_conns);
2475 free(s->priv_conns);
2476 free(s->safe_conns);
Olivier Houchard0c18a6f2018-12-02 14:11:41 +01002477 free(s->idle_orphan_conns);
Olivier Houchardf1314812019-02-18 16:41:17 +01002478 free(s->curr_idle_thr);
Willy Tarreau17d45382016-12-22 21:16:08 +01002479
2480 if (s->use_ssl || s->check.use_ssl) {
2481 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2482 xprt_get(XPRT_SSL)->destroy_srv(s);
2483 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002484 HA_SPIN_DESTROY(&s->lock);
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002485
2486 list_for_each_entry(srvdf, &server_deinit_list, list)
2487 srvdf->fct(s);
2488
Willy Tarreaubaaee002006-06-26 02:48:02 +02002489 free(s);
2490 s = s_next;
2491 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002492
Willy Tarreau4348fad2012-09-20 16:48:07 +02002493 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002494 /*
2495 * Zombie proxy, the listener just pretend to be up
2496 * because they still hold an opened fd.
2497 * Close it and give the listener its real state.
2498 */
2499 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2500 close(l->fd);
2501 l->state = LI_INIT;
2502 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002503 unbind_listener(l);
2504 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002505 LIST_DEL(&l->by_fe);
2506 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002507 free(l->name);
2508 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002509 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002510 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002511
Willy Tarreau4348fad2012-09-20 16:48:07 +02002512 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002513 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002514 if (bind_conf->xprt->destroy_bind_conf)
2515 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002516 free(bind_conf->file);
2517 free(bind_conf->arg);
2518 LIST_DEL(&bind_conf->by_fe);
2519 free(bind_conf);
2520 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002521
Christopher Fauletd7c91962015-04-30 11:48:27 +02002522 flt_deinit(p);
2523
Christopher Faulet3ea5cbe2019-07-31 08:44:12 +02002524 list_for_each_entry(pxdf, &proxy_deinit_list, list)
2525 pxdf->fct(p);
2526
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002527 free(p->desc);
2528 free(p->fwdfor_hdr_name);
2529
Willy Tarreauff011f22011-01-06 17:51:27 +01002530 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002531 free_http_res_rules(&p->http_res_rules);
Olivier Houchard3f795f72019-04-17 22:51:06 +02002532 task_destroy(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002533
Willy Tarreaubafbe012017-11-24 17:34:44 +01002534 pool_destroy(p->req_cap_pool);
2535 pool_destroy(p->rsp_cap_pool);
Dragan Dosen7d61a332019-05-07 14:16:18 +02002536 if (p->table)
2537 pool_destroy(p->table->pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002538
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002539 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002540 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002541 HA_SPIN_DESTROY(&p0->lbprm.lock);
2542 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002543 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002544 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002545
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002546 while (ua) {
2547 uap = ua;
2548 ua = ua->next;
2549
Willy Tarreaua534fea2008-08-03 12:19:50 +02002550 free(uap->uri_prefix);
2551 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002552 free(uap->node);
2553 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002554
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002555 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002556 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002557
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002558 free(uap);
2559 }
2560
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002561 userlist_free(userlist);
2562
David Carlier834cb2e2015-09-25 12:02:25 +01002563 cfg_unregister_sections();
2564
Christopher Faulet0132d062017-07-26 15:33:35 +02002565 deinit_log_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002566
Willy Tarreaudd815982007-10-16 12:25:14 +02002567 protocol_unbind_all();
2568
Willy Tarreau05554e62016-12-21 20:46:26 +01002569 list_for_each_entry(pdf, &post_deinit_list, list)
2570 pdf->fct();
2571
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002572 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002573 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002574 free(global.chroot); global.chroot = NULL;
2575 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002576 free(global.node); global.node = NULL;
2577 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002578 free(oldpids); oldpids = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02002579 task_destroy(global_listener_queue_task); global_listener_queue_task = NULL;
2580 task_destroy(idle_conn_task);
Olivier Houchard9ea5d362019-02-14 18:29:09 +01002581 idle_conn_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002582
William Lallemand0f99e342011-10-12 17:50:54 +02002583 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2584 LIST_DEL(&log->list);
2585 free(log);
2586 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002587 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002588 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002589 LIST_DEL(&wl->list);
2590 free(wl);
2591 }
2592
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002593 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2594 if (bol->must_free)
2595 free((void *)bol->str);
2596 LIST_DEL(&bol->list);
2597 free(bol);
2598 }
2599
Christopher Fauletff2613e2016-11-09 11:36:17 +01002600 vars_prune(&global.vars, NULL, NULL);
Willy Tarreau2455ceb2018-11-26 15:57:34 +01002601 pool_destroy_all();
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002602 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002603} /* end deinit() */
2604
William Lallemand72160322018-11-06 17:37:16 +01002605
Willy Tarreau918ff602011-07-25 16:33:49 +02002606/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002607static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002608{
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002609 int next, wake;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002610
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002611 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002612 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002613 /* Process a few tasks */
2614 process_runnable_tasks();
2615
William Lallemand1aab50b2018-06-07 09:46:01 +02002616 /* check if we caught some signals and process them in the
2617 first thread */
2618 if (tid == 0)
2619 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002620
Willy Tarreau58b458d2008-06-29 22:40:23 +02002621 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002622 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002623
Willy Tarreau85c459d2018-08-02 10:54:31 +02002624 /* stop when there's nothing left to do */
William Lallemanda7199262018-11-16 16:57:20 +01002625 if ((jobs - unstoppable_jobs) == 0)
Willy Tarreau85c459d2018-08-02 10:54:31 +02002626 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002627
Willy Tarreau7067b3a2019-06-02 11:11:29 +02002628 /* also stop if we failed to cleanly stop all tasks */
2629 if (killed > 1)
2630 break;
2631
Willy Tarreau10146c92015-04-13 20:44:19 +02002632 /* expire immediately if events are pending */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002633 wake = 1;
Olivier Houchard305d5ab2019-07-24 18:07:06 +02002634 if (thread_has_tasks())
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002635 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002636 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002637 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002638 else {
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002639 _HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2640 __ha_barrier_atomic_store();
Olivier Houchardbba1a262019-09-24 14:55:28 +02002641 if ((global_tasks_mask & tid_bit) || thread_has_tasks()) {
Olivier Houchard79321b92018-07-26 17:55:11 +02002642 activity[tid].wake_tasks++;
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002643 _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Olivier Houchard79321b92018-07-26 17:55:11 +02002644 } else
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002645 wake = 0;
Olivier Houchard79321b92018-07-26 17:55:11 +02002646 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002647
Willy Tarreau58b458d2008-06-29 22:40:23 +02002648 /* The poller will ensure it returns around <next> */
Willy Tarreau2ae84e42019-05-28 16:44:05 +02002649 cur_poller.poll(&cur_poller, next, wake);
Emeric Brun64cc49c2017-10-03 14:46:45 +02002650
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002651 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002652 }
2653}
2654
Christopher Faulet1d17c102017-08-29 15:38:48 +02002655static void *run_thread_poll_loop(void *data)
2656{
Willy Tarreau082b6282019-05-22 14:42:12 +02002657 struct per_thread_alloc_fct *ptaf;
Christopher Faulet1d17c102017-08-29 15:38:48 +02002658 struct per_thread_init_fct *ptif;
2659 struct per_thread_deinit_fct *ptdf;
Willy Tarreau082b6282019-05-22 14:42:12 +02002660 struct per_thread_free_fct *ptff;
Willy Tarreau34a150c2019-06-11 09:16:41 +02002661 static int init_left = 0;
2662 __decl_hathreads(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
2663 __decl_hathreads(static pthread_cond_t init_cond = PTHREAD_COND_INITIALIZER);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002664
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02002665 ha_set_tid((unsigned long)data);
Willy Tarreaud022e9c2019-09-24 08:25:15 +02002666 sched = &task_per_thread[tid];
Willy Tarreau91e6df02019-05-03 17:21:18 +02002667
Willy Tarreauf6178242019-05-21 19:46:58 +02002668#if (_POSIX_TIMERS > 0) && defined(_POSIX_THREAD_CPUTIME)
Willy Tarreau91e6df02019-05-03 17:21:18 +02002669#ifdef USE_THREAD
Willy Tarreau8323a372019-05-20 18:57:53 +02002670 pthread_getcpuclockid(pthread_self(), &ti->clock_id);
Willy Tarreau624dcbf2019-05-20 20:23:06 +02002671#else
Willy Tarreau8323a372019-05-20 18:57:53 +02002672 ti->clock_id = CLOCK_THREAD_CPUTIME_ID;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002673#endif
Willy Tarreau663fda42019-05-21 15:14:08 +02002674#endif
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002675 /* Now, initialize one thread init at a time. This is better since
2676 * some init code is a bit tricky and may release global resources
2677 * after reallocating them locally. This will also ensure there is
2678 * no race on file descriptors allocation.
2679 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002680#ifdef USE_THREAD
2681 pthread_mutex_lock(&init_mutex);
2682#endif
2683 /* The first thread must set the number of threads left */
2684 if (!init_left)
2685 init_left = global.nbthread;
2686 init_left--;
Willy Tarreau91e6df02019-05-03 17:21:18 +02002687
Christopher Faulet1d17c102017-08-29 15:38:48 +02002688 tv_update_date(-1,-1);
2689
Willy Tarreau082b6282019-05-22 14:42:12 +02002690 /* per-thread alloc calls performed here are not allowed to snoop on
2691 * other threads, so they are free to initialize at their own rhythm
2692 * as long as they act as if they were alone. None of them may rely
2693 * on resources initialized by the other ones.
2694 */
2695 list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
2696 if (!ptaf->fct()) {
2697 ha_alert("failed to allocate resources for thread %u.\n", tid);
2698 exit(1);
2699 }
2700 }
2701
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002702 /* per-thread init calls performed here are not allowed to snoop on
2703 * other threads, so they are free to initialize at their own rhythm
2704 * as long as they act as if they were alone.
2705 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002706 list_for_each_entry(ptif, &per_thread_init_list, list) {
2707 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002708 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002709 exit(1);
2710 }
2711 }
2712
Willy Tarreau71092822019-06-10 09:51:04 +02002713 /* enabling protocols will result in fd_insert() calls to be performed,
2714 * we want all threads to have already allocated their local fd tables
Willy Tarreau34a150c2019-06-11 09:16:41 +02002715 * before doing so, thus only the last thread does it.
Willy Tarreau71092822019-06-10 09:51:04 +02002716 */
Willy Tarreau34a150c2019-06-11 09:16:41 +02002717 if (init_left == 0)
Willy Tarreaue4d7c9d2019-06-10 10:14:52 +02002718 protocol_enable_all();
Willy Tarreau6ec902a2019-06-07 14:41:11 +02002719
Willy Tarreau34a150c2019-06-11 09:16:41 +02002720#ifdef USE_THREAD
2721 pthread_cond_broadcast(&init_cond);
2722 pthread_mutex_unlock(&init_mutex);
2723
2724 /* now wait for other threads to finish starting */
2725 pthread_mutex_lock(&init_mutex);
2726 while (init_left)
2727 pthread_cond_wait(&init_cond, &init_mutex);
2728 pthread_mutex_unlock(&init_mutex);
2729#endif
Willy Tarreau3078e9f2019-05-20 10:50:43 +02002730
Christopher Faulet1d17c102017-08-29 15:38:48 +02002731 run_poll_loop();
2732
2733 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2734 ptdf->fct();
2735
Willy Tarreau082b6282019-05-22 14:42:12 +02002736 list_for_each_entry(ptff, &per_thread_free_list, list)
2737 ptff->fct();
2738
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002739#ifdef USE_THREAD
Olivier Houchardb23a61f2019-03-08 18:51:17 +01002740 _HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002741 if (tid > 0)
2742 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002743#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002744 return NULL;
2745}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002746
Willy Tarreaue9b26022011-08-01 20:57:55 +02002747/* This is the global management task for listeners. It enables listeners waiting
2748 * for global resources when there are enough free resource, or at least once in
2749 * a while. It is designed to be called as a task.
2750 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002751static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002752{
2753 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002754 /* queue is empty, nothing to do */
Olivier Houchard859dc802019-08-08 15:47:21 +02002755 if (MT_LIST_ISEMPTY(&global_listener_queue))
Willy Tarreaue9b26022011-08-01 20:57:55 +02002756 goto out;
2757
2758 /* If there are still too many concurrent connections, let's wait for
2759 * some of them to go away. We don't need to re-arm the timer because
2760 * each of them will scan the queue anyway.
2761 */
2762 if (unlikely(actconn >= global.maxconn))
2763 goto out;
2764
2765 /* We should periodically try to enable listeners waiting for a global
2766 * resource here, because it is possible, though very unlikely, that
2767 * they have been blocked by a temporary lack of global resource such
2768 * as a file descriptor or memory and that the temporary condition has
2769 * disappeared.
2770 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002771 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002772
2773 out:
2774 t->expire = next;
2775 task_queue(t);
2776 return t;
2777}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002778
Willy Tarreaubaaee002006-06-26 02:48:02 +02002779int main(int argc, char **argv)
2780{
2781 int err, retry;
2782 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002783 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002784 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002785
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002786 setvbuf(stdout, NULL, _IONBF, 0);
Willy Tarreau5794fb02018-11-25 18:43:29 +01002787
Willy Tarreauff9c9142019-02-07 10:39:36 +01002788 /* this can only safely be done here, though it's optimized away by
2789 * the compiler.
2790 */
2791 if (MAX_PROCS < 1 || MAX_PROCS > LONGBITS) {
2792 ha_alert("MAX_PROCS value must be between 1 and %d inclusive; "
2793 "HAProxy was built with value %d, please fix it and rebuild.\n",
2794 LONGBITS, MAX_PROCS);
2795 exit(1);
2796 }
2797
Willy Tarreaubf696402019-03-01 10:09:28 +01002798 /* take a copy of initial limits before we possibly change them */
2799 getrlimit(RLIMIT_NOFILE, &limit);
2800 rlim_fd_cur_at_boot = limit.rlim_cur;
2801 rlim_fd_max_at_boot = limit.rlim_max;
2802
Willy Tarreau5794fb02018-11-25 18:43:29 +01002803 /* process all initcalls in order of potential dependency */
2804 RUN_INITCALLS(STG_PREPARE);
2805 RUN_INITCALLS(STG_LOCK);
2806 RUN_INITCALLS(STG_ALLOC);
2807 RUN_INITCALLS(STG_POOL);
2808 RUN_INITCALLS(STG_REGISTER);
2809 RUN_INITCALLS(STG_INIT);
2810
Emeric Bruncf20bf12010-10-22 16:06:11 +02002811 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002812 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2813 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2814 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002815 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002816
Willy Tarreaue437c442010-03-17 18:02:46 +01002817 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2818 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2819 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002820 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002821 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002822
Willy Tarreaudc23a922011-02-16 11:10:36 +01002823 /* ulimits */
2824 if (!global.rlimit_nofile)
2825 global.rlimit_nofile = global.maxsock;
2826
2827 if (global.rlimit_nofile) {
Willy Tarreaue5cfdac2019-03-01 10:32:05 +01002828 limit.rlim_cur = global.rlimit_nofile;
2829 limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
2830
Willy Tarreaudc23a922011-02-16 11:10:36 +01002831 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002832 /* try to set it to the max possible at least */
2833 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002834 limit.rlim_cur = limit.rlim_max;
2835 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2836 getrlimit(RLIMIT_NOFILE, &limit);
2837
Christopher Faulet767a84b2017-11-24 16:50:31 +01002838 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n", argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Willy Tarreauef635472016-06-21 11:48:18 +02002839 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002840 }
2841 }
2842
2843 if (global.rlimit_memmax) {
2844 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002845 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002846#ifdef RLIMIT_AS
2847 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002848 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2849 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002850 }
2851#else
2852 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002853 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2854 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002855 }
2856#endif
2857 }
2858
Olivier Houchardf73629d2017-04-05 22:33:04 +02002859 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002860 if (strcmp("/dev/null", old_unixsocket) != 0) {
2861 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002862 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002863 if (!(global.mode & MODE_MWORKER))
2864 exit(1);
2865 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002866 }
2867 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002868 get_cur_unixsocket();
2869
Willy Tarreaubaaee002006-06-26 02:48:02 +02002870 /* We will loop at most 100 times with 10 ms delay each time.
2871 * That's at most 1 second. We only send a signal to old pids
2872 * if we cannot grab at least one port.
2873 */
2874 retry = MAX_START_RETRIES;
2875 err = ERR_NONE;
2876 while (retry >= 0) {
2877 struct timeval w;
2878 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002879 /* exit the loop on no error or fatal error */
2880 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002881 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002882 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002883 break;
2884
2885 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2886 * listening sockets. So on those platforms, it would be wiser to
2887 * simply send SIGUSR1, which will not be undoable.
2888 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002889 if (tell_old_pids(SIGTTOU) == 0) {
2890 /* no need to wait if we can't contact old pids */
2891 retry = 0;
2892 continue;
2893 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002894 /* give some time to old processes to stop listening */
2895 w.tv_sec = 0;
2896 w.tv_usec = 10*1000;
2897 select(0, NULL, NULL, NULL, &w);
2898 retry--;
2899 }
2900
2901 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002902 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002903 if (retry != MAX_START_RETRIES && nb_oldpids) {
2904 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002905 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002906 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002907 exit(1);
2908 }
2909
William Lallemand944e6192018-11-21 15:48:31 +01002910 if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002911 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002912 /* Note: we don't have to send anything to the old pids because we
2913 * never stopped them. */
2914 exit(1);
2915 }
2916
Emeric Bruncf20bf12010-10-22 16:06:11 +02002917 err = protocol_bind_all(errmsg, sizeof(errmsg));
2918 if ((err & ~ERR_WARN) != ERR_NONE) {
2919 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002920 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002921
Christopher Faulet767a84b2017-11-24 16:50:31 +01002922 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002923 protocol_unbind_all(); /* cleanup everything we can */
2924 if (nb_oldpids)
2925 tell_old_pids(SIGTTIN);
2926 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002927 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002928 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002929 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002930 /* Ok, all listener should now be bound, close any leftover sockets
2931 * the previous process gave us, we don't need them anymore
2932 */
2933 while (xfer_sock_list != NULL) {
2934 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2935 close(xfer_sock_list->fd);
2936 free(xfer_sock_list->iface);
2937 free(xfer_sock_list->namespace);
2938 free(xfer_sock_list);
2939 xfer_sock_list = tmpxfer;
2940 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002941
Willy Tarreaubaaee002006-06-26 02:48:02 +02002942 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002943 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2944 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002945
Willy Tarreaubaaee002006-06-26 02:48:02 +02002946 /* MODE_QUIET can inhibit alerts and warnings below this line */
2947
PiBa-NL149a81a2017-12-25 21:03:31 +01002948 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2949 /* either stdin/out/err are already closed or should stay as they are. */
2950 if ((global.mode & MODE_DAEMON)) {
2951 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2952 global.mode &= ~MODE_VERBOSE;
2953 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2954 }
2955 } else {
2956 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2957 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002958 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002959 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002960 }
2961
2962 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002963 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002964 unlink(global.pidfile);
2965 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2966 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002967 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002968 if (nb_oldpids)
2969 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002970 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002971 exit(1);
2972 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002973 }
2974
Willy Tarreaub38651a2007-03-24 17:24:39 +01002975 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002976 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2977 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002978 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002979 exit(1);
2980 }
2981
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002982 /* If the user is not root, we'll still let him try the configuration
2983 * but we inform him that unexpected behaviour may occur.
2984 */
2985 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002986 ha_warning("[%s.main()] Some options which require full privileges"
2987 " might not work well.\n"
2988 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002989
William Lallemand095ba4c2017-06-01 17:38:50 +02002990 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2991
2992 /* chroot if needed */
2993 if (global.chroot != NULL) {
2994 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002995 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002996 if (nb_oldpids)
2997 tell_old_pids(SIGTTIN);
2998 protocol_unbind_all();
2999 exit(1);
3000 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003001 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02003002 }
3003
William Lallemand944e6192018-11-21 15:48:31 +01003004 if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
Willy Tarreaubb545b42010-08-25 12:58:59 +02003005 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003006
William Lallemand27edc4b2019-05-07 17:49:33 +02003007 /* send a SIGTERM to workers who have a too high reloads number */
3008 if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
3009 mworker_kill_max_reloads(SIGTERM);
3010
William Lallemand8a361b52017-06-20 11:20:33 +02003011 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
3012 nb_oldpids = 0;
3013 free(oldpids);
3014 oldpids = NULL;
3015 }
3016
3017
Willy Tarreaubaaee002006-06-26 02:48:02 +02003018 /* Note that any error at this stage will be fatal because we will not
3019 * be able to restart the old pids.
3020 */
3021
William Lallemand095ba4c2017-06-01 17:38:50 +02003022 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
3023 /* setgid / setuid */
3024 if (global.gid) {
3025 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003026 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3027 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003028
3029 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003030 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003031 protocol_unbind_all();
3032 exit(1);
3033 }
3034 }
Michael Schererab012dd2013-01-12 18:35:19 +01003035
William Lallemand095ba4c2017-06-01 17:38:50 +02003036 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003037 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01003038 protocol_unbind_all();
3039 exit(1);
3040 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02003041 }
Willy Tarreau636848a2019-04-15 19:38:50 +02003042
3043 /* try our best to re-enable core dumps depending on system capabilities.
3044 * What is addressed here :
3045 * - remove file size limits
3046 * - remove core size limits
3047 * - mark the process dumpable again if it lost it due to user/group
3048 */
3049 if (global.tune.options & GTUNE_SET_DUMPABLE) {
3050 limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
3051
3052#if defined(RLIMIT_FSIZE)
3053 if (setrlimit(RLIMIT_FSIZE, &limit) == -1)
3054 ha_warning("[%s.main()] Failed to set the raise the maximum file size.\n", argv[0]);
3055#endif
3056
3057#if defined(RLIMIT_CORE)
3058 if (setrlimit(RLIMIT_CORE, &limit) == -1)
3059 ha_warning("[%s.main()] Failed to set the raise the core dump size.\n", argv[0]);
3060#endif
3061
3062#if defined(USE_PRCTL)
3063 if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
3064 ha_warning("[%s.main()] Failed to set the dumpable flag, no core will be dumped.\n", argv[0]);
3065#endif
3066 }
3067
Willy Tarreaubaaee002006-06-26 02:48:02 +02003068 /* check ulimits */
3069 limit.rlim_cur = limit.rlim_max = 0;
3070 getrlimit(RLIMIT_NOFILE, &limit);
3071 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003072 ha_warning("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
3073 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003074 }
3075
William Lallemand944e6192018-11-21 15:48:31 +01003076 if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003077 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003078 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003079 int ret = 0;
3080 int proc;
William Lallemande1340412017-12-28 16:09:36 +01003081 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003082
William Lallemand095ba4c2017-06-01 17:38:50 +02003083 /*
3084 * if daemon + mworker: must fork here to let a master
3085 * process live in background before forking children
3086 */
William Lallemand73b85e72017-06-01 17:38:51 +02003087
3088 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
3089 && (global.mode & MODE_MWORKER)
3090 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02003091 ret = fork();
3092 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003093 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003094 protocol_unbind_all();
3095 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003096 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02003097 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02003098 } else /* change the process group ID in the child (master process) */
3099 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02003100 }
William Lallemande20b6a62017-06-01 17:38:55 +02003101
William Lallemande20b6a62017-06-01 17:38:55 +02003102
William Lallemanddeed7802017-11-06 11:00:04 +01003103 /* if in master-worker mode, write the PID of the father */
3104 if (global.mode & MODE_MWORKER) {
3105 char pidstr[100];
Willy Tarreau76a80c72019-06-22 07:41:38 +02003106 snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01003107 if (pidfd >= 0)
3108 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01003109 }
3110
Willy Tarreaubaaee002006-06-26 02:48:02 +02003111 /* the father launches the required number of processes */
William Lallemand944e6192018-11-21 15:48:31 +01003112 if (!(global.mode & MODE_MWORKER_WAIT)) {
William Lallemand9a1ee7a2019-04-01 11:30:02 +02003113 if (global.mode & MODE_MWORKER)
3114 mworker_ext_launch_all();
William Lallemand944e6192018-11-21 15:48:31 +01003115 for (proc = 0; proc < global.nbproc; proc++) {
3116 ret = fork();
3117 if (ret < 0) {
3118 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
3119 protocol_unbind_all();
3120 exit(1); /* there has been an error */
3121 }
3122 else if (ret == 0) /* child breaks here */
3123 break;
William Lallemand944e6192018-11-21 15:48:31 +01003124 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
3125 char pidstr[100];
3126 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
3127 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
3128 }
3129 if (global.mode & MODE_MWORKER) {
3130 struct mworker_proc *child;
William Lallemandce83b4a2018-10-26 14:47:30 +02003131
William Lallemand220567e2018-11-21 18:04:53 +01003132 ha_notice("New worker #%d (%d) forked\n", relative_pid, ret);
William Lallemand944e6192018-11-21 15:48:31 +01003133 /* find the right mworker_proc */
3134 list_for_each_entry(child, &proc_list, list) {
3135 if (child->relative_pid == relative_pid &&
William Lallemand8f7069a2019-04-12 16:09:23 +02003136 child->reloads == 0 && child->options & PROC_O_TYPE_WORKER) {
William Lallemand944e6192018-11-21 15:48:31 +01003137 child->timestamp = now.tv_sec;
3138 child->pid = ret;
William Lallemand1dc69632019-06-12 19:11:33 +02003139 child->version = strdup(haproxy_version);
William Lallemand944e6192018-11-21 15:48:31 +01003140 break;
3141 }
William Lallemandce83b4a2018-10-26 14:47:30 +02003142 }
3143 }
William Lallemandbc193052018-09-11 10:06:26 +02003144
William Lallemand944e6192018-11-21 15:48:31 +01003145 relative_pid++; /* each child will get a different one */
3146 pid_bit <<= 1;
3147 }
3148 } else {
3149 /* wait mode */
3150 global.nbproc = 1;
3151 proc = 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003152 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003153
3154#ifdef USE_CPU_AFFINITY
3155 if (proc < global.nbproc && /* child */
Willy Tarreauff9c9142019-02-07 10:39:36 +01003156 proc < MAX_PROCS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003157 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003158#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02003159 {
3160 cpuset_t cpuset;
3161 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003162 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02003163
3164 CPU_ZERO(&cpuset);
3165 while ((i = ffsl(cpu_map)) > 0) {
3166 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003167 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02003168 }
3169 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
3170 }
David Carlier5e4c8e22019-09-13 05:12:58 +01003171#elif defined(__linux__)
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003172 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01003173#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02003174#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02003175 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02003176 if (pidfd >= 0) {
3177 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
3178 close(pidfd);
3179 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02003180
3181 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02003182 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003183
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003184 if (proc == global.nbproc) {
William Lallemand944e6192018-11-21 15:48:31 +01003185 if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003186
3187 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
3188 (global.mode & MODE_DAEMON)) {
3189 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01003190 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
3191 stdio_quiet(-1);
3192
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003193 global.mode &= ~MODE_VERBOSE;
3194 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01003195 }
3196
William Lallemandb3f2be32018-09-11 10:06:18 +02003197 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02003198 /* should never get there */
3199 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003200 }
William Lallemandcf4e4962017-06-08 19:05:48 +02003201#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00003202 ssl_free_dh();
3203#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02003204 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02003205 }
3206
William Lallemandcb11fd22017-06-01 17:38:52 +02003207 /* child must never use the atexit function */
3208 atexit_flag = 0;
3209
William Lallemandbc193052018-09-11 10:06:26 +02003210 /* close useless master sockets */
3211 if (global.mode & MODE_MWORKER) {
3212 struct mworker_proc *child, *it;
3213 master = 0;
3214
William Lallemand309dc9a2018-10-26 14:47:45 +02003215 mworker_cli_proxy_stop();
3216
William Lallemandbc193052018-09-11 10:06:26 +02003217 /* free proc struct of other processes */
3218 list_for_each_entry_safe(child, it, &proc_list, list) {
William Lallemandce83b4a2018-10-26 14:47:30 +02003219 /* close the FD of the master side for all
3220 * workers, we don't need to close the worker
3221 * side of other workers since it's done with
3222 * the bind_proc */
Tim Duesterhus742e0f92018-11-25 20:03:39 +01003223 if (child->ipc_fd[0] >= 0)
3224 close(child->ipc_fd[0]);
William Lallemandce83b4a2018-10-26 14:47:30 +02003225 if (child->relative_pid == relative_pid &&
3226 child->reloads == 0) {
3227 /* keep this struct if this is our pid */
3228 proc_self = child;
William Lallemandbc193052018-09-11 10:06:26 +02003229 continue;
William Lallemandce83b4a2018-10-26 14:47:30 +02003230 }
William Lallemandbc193052018-09-11 10:06:26 +02003231 LIST_DEL(&child->list);
Tim Duesterhus9b7a9762019-05-16 20:23:22 +02003232 mworker_free_child(child);
3233 child = NULL;
William Lallemandbc193052018-09-11 10:06:26 +02003234 }
3235 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003236
William Lallemande1340412017-12-28 16:09:36 +01003237 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3238 devnullfd = open("/dev/null", O_RDWR, 0);
3239 if (devnullfd < 0) {
3240 ha_alert("Cannot open /dev/null\n");
3241 exit(EXIT_FAILURE);
3242 }
3243 }
3244
William Lallemand095ba4c2017-06-01 17:38:50 +02003245 /* Must chroot and setgid/setuid in the children */
3246 /* chroot if needed */
3247 if (global.chroot != NULL) {
3248 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003249 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003250 if (nb_oldpids)
3251 tell_old_pids(SIGTTIN);
3252 protocol_unbind_all();
3253 exit(1);
3254 }
3255 }
3256
3257 free(global.chroot);
3258 global.chroot = NULL;
3259
3260 /* setgid / setuid */
3261 if (global.gid) {
3262 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003263 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3264 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003265
3266 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003267 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003268 protocol_unbind_all();
3269 exit(1);
3270 }
3271 }
3272
3273 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003274 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003275 protocol_unbind_all();
3276 exit(1);
3277 }
3278
William Lallemand7f80eb22017-05-26 18:19:55 +02003279 /* pass through every cli socket, and check if it's bound to
3280 * the current process and if it exposes listeners sockets.
3281 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3282 * */
3283
3284 if (global.stats_fe) {
3285 struct bind_conf *bind_conf;
3286
3287 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3288 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3289 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3290 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3291 break;
3292 }
3293 }
3294 }
3295 }
3296
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003297 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003298 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003299 while (px != NULL) {
3300 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003301 if (!(px->bind_proc & (1UL << proc))) {
3302 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3303 zombify_proxy(px);
3304 else
3305 stop_proxy(px);
3306 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003307 }
3308 px = px->next;
3309 }
3310
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003311 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003312 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003313 if (!curpeers->peers_fe)
3314 continue;
3315
3316 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3317 continue;
3318
3319 stop_proxy(curpeers->peers_fe);
3320 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003321 signal_unregister_handler(curpeers->sighandler);
Olivier Houchard3f795f72019-04-17 22:51:06 +02003322 task_destroy(curpeers->sync_task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003323 curpeers->sync_task = NULL;
Olivier Houchard3f795f72019-04-17 22:51:06 +02003324 task_destroy(curpeers->peers_fe->task);
Willy Tarreau47c8c022015-09-28 16:39:25 +02003325 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003326 curpeers->peers_fe = NULL;
3327 }
3328
William Lallemand2e8fad92018-11-13 16:18:23 +01003329 /*
3330 * This is only done in daemon mode because we might want the
3331 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
3332 * we should now close the 3 first FDs to ensure that we can
3333 * detach from the TTY. We MUST NOT do it in other cases since
3334 * it would have already be done, and 0-2 would have been
3335 * affected to listening sockets
Willy Tarreaubaaee002006-06-26 02:48:02 +02003336 */
William Lallemand2e8fad92018-11-13 16:18:23 +01003337 if ((global.mode & MODE_DAEMON) &&
3338 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003339 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003340 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003341 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003342 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3343 }
3344 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003345 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3346 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003347 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003348 }
3349
Christopher Faulete3a5e352017-10-24 13:53:54 +02003350 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003351 /*
3352 * That's it : the central polling loop. Run until we stop.
3353 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003354#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003355 {
William Lallemand1aab50b2018-06-07 09:46:01 +02003356 sigset_t blocked_sig, old_sig;
Willy Tarreauc40efc12019-05-03 09:22:44 +02003357 int i;
3358
William Lallemand1aab50b2018-06-07 09:46:01 +02003359 /* ensure the signals will be blocked in every thread */
3360 sigfillset(&blocked_sig);
3361 sigdelset(&blocked_sig, SIGPROF);
3362 sigdelset(&blocked_sig, SIGBUS);
3363 sigdelset(&blocked_sig, SIGFPE);
3364 sigdelset(&blocked_sig, SIGILL);
3365 sigdelset(&blocked_sig, SIGSEGV);
3366 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3367
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003368 /* Create nbthread-1 thread. The first thread is the current process */
David Carliera92c5ce2019-09-13 05:03:12 +01003369 ha_thread_info[0].pthread = pthread_self();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003370 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003371 pthread_create(&ha_thread_info[i].pthread, NULL, &run_thread_poll_loop, (void *)(long)i);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003372
Christopher Faulet62519022017-10-16 15:49:32 +02003373#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003374 /* Now the CPU affinity for all threads */
Willy Tarreau7764a572019-07-16 15:10:34 +02003375 if (global.cpu_map.proc_t1[relative_pid-1])
3376 global.cpu_map.thread[0] &= global.cpu_map.proc_t1[relative_pid-1];
3377
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003378 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003379 if (global.cpu_map.proc[relative_pid-1])
Willy Tarreau81492c92019-05-03 09:41:23 +02003380 global.cpu_map.thread[i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003381
Willy Tarreau421f02e2018-01-20 18:19:22 +01003382 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Willy Tarreau81492c92019-05-03 09:41:23 +02003383 global.cpu_map.thread[i]) {/* only do this if the thread has a THREAD map */
David Carlier5e4c8e22019-09-13 05:12:58 +01003384#if defined(__APPLE__)
3385 int j;
3386 unsigned long cpu_map = global.cpu_map.thread[i];
3387
3388 while ((j = ffsl(cpu_map)) > 0) {
3389 thread_affinity_policy_data_t cpu_set = { j - 1 };
3390 thread_port_t mthread = pthread_mach_thread_np(ha_thread_info[i].pthread);
3391 thread_policy_set(mthread, THREAD_AFFINITY_POLICY, (thread_policy_t)&cpu_set, 1);
3392 cpu_map &= ~(1UL << (j - 1));
3393 }
3394#else
Olivier Houchard829aa242017-12-01 18:19:43 +01003395#if defined(__FreeBSD__) || defined(__NetBSD__)
3396 cpuset_t cpuset;
3397#else
3398 cpu_set_t cpuset;
3399#endif
3400 int j;
Willy Tarreau81492c92019-05-03 09:41:23 +02003401 unsigned long cpu_map = global.cpu_map.thread[i];
Olivier Houchard829aa242017-12-01 18:19:43 +01003402
3403 CPU_ZERO(&cpuset);
3404
3405 while ((j = ffsl(cpu_map)) > 0) {
3406 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003407 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003408 }
David Carliera92c5ce2019-09-13 05:03:12 +01003409 pthread_setaffinity_np(ha_thread_info[i].pthread,
Olivier Houchard829aa242017-12-01 18:19:43 +01003410 sizeof(cpuset), &cpuset);
David Carlier5e4c8e22019-09-13 05:12:58 +01003411#endif
Olivier Houchard829aa242017-12-01 18:19:43 +01003412 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003413 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003414#endif /* !USE_CPU_AFFINITY */
3415
William Lallemand1aab50b2018-06-07 09:46:01 +02003416 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003417 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003418
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003419 /* Finally, start the poll loop for the first thread */
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003420 run_thread_poll_loop(0);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003421
3422 /* Wait the end of other threads */
3423 for (i = 1; i < global.nbthread; i++)
David Carliera92c5ce2019-09-13 05:03:12 +01003424 pthread_join(ha_thread_info[i].pthread, NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02003425
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003426#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3427 show_lock_stats();
3428#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003429 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003430#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003431 haproxy_unblock_signals();
Willy Tarreaub4f7cc32019-05-03 09:27:30 +02003432 run_thread_poll_loop(0);
Christopher Faulet62519022017-10-16 15:49:32 +02003433#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003434
3435 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003436 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003437
Willy Tarreaubaaee002006-06-26 02:48:02 +02003438 exit(0);
3439}
3440
3441
3442/*
3443 * Local variables:
3444 * c-indent-level: 8
3445 * c-basic-offset: 8
3446 * End:
3447 */