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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau7b677262017-04-03 09:27:49 +02003 * Copyright 2000-2017 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>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020055#ifdef __FreeBSD__
56#include <sys/param.h>
57#include <sys/cpuset.h>
David Carlier6d5c8412017-11-29 11:02:32 +000058#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020059#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010060#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020061
62#ifdef DEBUG_FULL
63#include <assert.h>
64#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010065#if defined(USE_SYSTEMD)
66#include <systemd/sd-daemon.h>
67#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau2dd0d472006-06-29 17:53:05 +020069#include <common/base64.h>
70#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020071#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020072#include <common/compat.h>
73#include <common/config.h>
74#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010075#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020076#include <common/memory.h>
77#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010078#include <common/namespace.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020079#include <common/regex.h>
80#include <common/standard.h>
81#include <common/time.h>
82#include <common/uri_auth.h>
83#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020084#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020085
86#include <types/capture.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020087#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020088#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090089#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020090#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020091
Willy Tarreau0fc45a72007-06-17 00:36:03 +020092#include <proto/acl.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +020093#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +020094#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020095#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020096#include <proto/channel.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +020097#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020098#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020099#include <proto/filters.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +0200100#include <proto/hdr_idx.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100101#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200102#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200103#include <proto/log.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100104#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200105#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +0100106#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200107#include <proto/proxy.h>
108#include <proto/queue.h>
109#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200110#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200111#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200112#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200113#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200114#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100115#include <proto/vars.h>
Willy Tarreau50bc31d2017-08-16 15:35:19 +0200116#ifdef USE_OPENSSL
Grant Zhang872f9c22017-01-21 01:10:18 +0000117#include <proto/ssl_sock.h>
Willy Tarreau50bc31d2017-08-16 15:35:19 +0200118#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200119
Willy Tarreau477ecd82010-01-03 21:12:30 +0100120/* list of config files */
121static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200122int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100123int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100124unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200125
Olivier Houchard79321b92018-07-26 17:55:11 +0200126volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200127/* global options */
128struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100129 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100130 .nbproc = 1,
Christopher Fauletbe0faa22017-08-29 15:37:10 +0200131 .nbthread = 1,
William Lallemand5f232402012-04-05 18:02:55 +0200132 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200133 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100134 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100135 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100136 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200137 .unix_bind = {
138 .ux = {
139 .uid = -1,
140 .gid = -1,
141 .mode = 0,
142 }
143 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200144 .tune = {
145 .bufsize = BUFSIZE,
Willy Tarreau27097842015-09-28 13:53:23 +0200146 .maxrewrite = -1,
Willy Tarreau43961d52010-10-04 20:39:20 +0200147 .chksize = BUFSIZE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100148 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200149 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200150#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100151 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200152#endif
William Lallemandf3747832012-11-09 12:33:10 +0100153 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100154#ifdef DEFAULT_IDLE_TIMER
155 .idle_timer = DEFAULT_IDLE_TIMER,
156#else
157 .idle_timer = 1000, /* 1 second */
158#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200159 },
Emeric Brun76d88952012-10-05 15:47:31 +0200160#ifdef USE_OPENSSL
161#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200162 .maxsslconn = DEFAULT_MAXSSLCONN,
163#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200164#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200165 /* others NULL OK */
166};
167
Willy Tarreaud80cb4e2018-01-20 19:30:13 +0100168struct activity activity[MAX_THREADS] __attribute__((aligned(64))) = { };
169
Willy Tarreaubaaee002006-06-26 02:48:02 +0200170/*********************************************************************/
171
172int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100173int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200174int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200175
176/* Here we store informations about the pids of the processes we may pause
177 * or kill. We will send them a signal every 10 ms until we can bind to all
178 * our ports. With 200 retries, that's about 2 seconds.
179 */
180#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200181static int *oldpids = NULL;
182static int oldpids_sig; /* use USR1 or TERM */
183
Olivier Houchardf73629d2017-04-05 22:33:04 +0200184/* Path to the unix socket we use to retrieve listener sockets from the old process */
185static const char *old_unixsocket;
186
William Lallemand85b0bd92017-06-01 17:38:53 +0200187static char *cur_unixsocket = NULL;
188
William Lallemandcb11fd22017-06-01 17:38:52 +0200189int atexit_flag = 0;
190
Willy Tarreaubb545b42010-08-25 12:58:59 +0200191int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200192const int zero = 0;
193const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200194const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200195
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100196char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200197char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200198
Willy Tarreau89efaed2013-12-13 15:14:55 +0100199/* used from everywhere just to drain results we don't want to read and which
200 * recent versions of gcc increasingly and annoyingly complain about.
201 */
202int shut_your_big_mouth_gcc_int = 0;
203
William Lallemand73b85e72017-06-01 17:38:51 +0200204int *children = NULL; /* store PIDs of children in master workers mode */
205
206static volatile sig_atomic_t caught_signal = 0;
207static char **next_argv = NULL;
208
William Lallemande20b6a62017-06-01 17:38:55 +0200209int mworker_pipe[2];
210
Willy Tarreau08ceb102011-07-24 22:58:00 +0200211/* list of the temporarily limited listeners because of lack of resource */
212struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200213struct task *global_listener_queue_task;
Olivier Houchard9f6af332018-05-25 14:04:04 +0200214static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200215
Willy Tarreauff055502014-04-28 22:27:06 +0200216/* bitfield of a few warnings to emit just once (WARN_*) */
217unsigned int warned = 0;
218
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100219
220/* These are strings to be reported in the output of "haproxy -vv". They may
221 * either be constants (in which case must_free must be zero) or dynamically
222 * allocated strings to pass to free() on exit, and in this case must_free
223 * must be non-zero.
224 */
225struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
226struct build_opts_str {
227 struct list list;
228 const char *str;
229 int must_free;
230};
231
Willy Tarreaue6945732016-12-21 19:57:00 +0100232/* These functions are called just after the point where the program exits
233 * after a config validity check, so they are generally suited for resource
234 * allocation and slow initializations that should be skipped during basic
235 * config checks. The functions must return 0 on success, or a combination
236 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
237 * and immediate exit, so the function must have emitted any useful error.
238 */
239struct list post_check_list = LIST_HEAD_INIT(post_check_list);
240struct post_check_fct {
241 struct list list;
242 int (*fct)();
243};
244
Willy Tarreau05554e62016-12-21 20:46:26 +0100245/* These functions are called when freeing the global sections at the end
246 * of deinit, after everything is stopped. They don't return anything, and
247 * they work in best effort mode as their sole goal is to make valgrind
248 * mostly happy.
249 */
250struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
251struct post_deinit_fct {
252 struct list list;
253 void (*fct)();
254};
255
Christopher Faulet415f6112017-07-25 16:52:58 +0200256/* These functions are called for each thread just after the thread creation
257 * and before running the scheduler. They should be used to do per-thread
258 * initializations. They must return 0 if an error occurred. */
259struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
260struct per_thread_init_fct {
261 struct list list;
262 int (*fct)();
263};
264
265/* These functions are called for each thread just after the scheduler loop and
266 * before exiting the thread. They don't return anything and, as for post-deinit
267 * functions, they work in best effort mode as their sole goal is to make
268 * valgrind mostly happy. */
269struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
270struct per_thread_deinit_fct {
271 struct list list;
272 void (*fct)();
273};
274
Willy Tarreaubaaee002006-06-26 02:48:02 +0200275/*********************************************************************/
276/* general purpose functions ***************************************/
277/*********************************************************************/
278
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100279/* used to register some build option strings at boot. Set must_free to
280 * non-zero if the string must be freed upon exit.
281 */
282void hap_register_build_opts(const char *str, int must_free)
283{
284 struct build_opts_str *b;
285
286 b = calloc(1, sizeof(*b));
287 if (!b) {
288 fprintf(stderr, "out of memory\n");
289 exit(1);
290 }
291 b->str = str;
292 b->must_free = must_free;
293 LIST_ADDQ(&build_opts_list, &b->list);
294}
295
Willy Tarreaue6945732016-12-21 19:57:00 +0100296/* used to register some initialization functions to call after the checks. */
297void hap_register_post_check(int (*fct)())
298{
299 struct post_check_fct *b;
300
301 b = calloc(1, sizeof(*b));
302 if (!b) {
303 fprintf(stderr, "out of memory\n");
304 exit(1);
305 }
306 b->fct = fct;
307 LIST_ADDQ(&post_check_list, &b->list);
308}
309
Willy Tarreau05554e62016-12-21 20:46:26 +0100310/* used to register some de-initialization functions to call after everything
311 * has stopped.
312 */
313void hap_register_post_deinit(void (*fct)())
314{
315 struct post_deinit_fct *b;
316
317 b = calloc(1, sizeof(*b));
318 if (!b) {
319 fprintf(stderr, "out of memory\n");
320 exit(1);
321 }
322 b->fct = fct;
323 LIST_ADDQ(&post_deinit_list, &b->list);
324}
325
Christopher Faulet415f6112017-07-25 16:52:58 +0200326/* used to register some initialization functions to call for each thread. */
327void hap_register_per_thread_init(int (*fct)())
328{
329 struct per_thread_init_fct *b;
330
331 b = calloc(1, sizeof(*b));
332 if (!b) {
333 fprintf(stderr, "out of memory\n");
334 exit(1);
335 }
336 b->fct = fct;
337 LIST_ADDQ(&per_thread_init_list, &b->list);
338}
339
340/* used to register some de-initialization functions to call for each thread. */
341void hap_register_per_thread_deinit(void (*fct)())
342{
343 struct per_thread_deinit_fct *b;
344
345 b = calloc(1, sizeof(*b));
346 if (!b) {
347 fprintf(stderr, "out of memory\n");
348 exit(1);
349 }
350 b->fct = fct;
351 LIST_ADDQ(&per_thread_deinit_list, &b->list);
352}
353
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100354static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200355{
356 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau7b677262017-04-03 09:27:49 +0200357 printf("Copyright 2000-2017 Willy Tarreau <willy@haproxy.org>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200358}
359
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100360static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100361{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100362 struct build_opts_str *item;
363
Willy Tarreau7b066db2007-12-02 11:28:59 +0100364 printf("Build options :"
365#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100366 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100367#endif
368#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100369 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100370#endif
371#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100372 "\n CC = " BUILD_CC
373#endif
374#ifdef BUILD_CFLAGS
375 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100376#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100377#ifdef BUILD_OPTIONS
378 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100379#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200380 "\n\nDefault settings :"
381 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
382 "\n\n",
383 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200384
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100385 list_for_each_entry(item, &build_opts_list, list) {
386 puts(item->str);
387 }
388
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100389 putchar('\n');
390
Willy Tarreaube5b6852009-10-03 18:57:08 +0200391 list_pollers(stdout);
392 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100393 list_filters(stdout);
394 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100395}
396
Willy Tarreaubaaee002006-06-26 02:48:02 +0200397/*
398 * This function prints the command line usage and exits
399 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100400static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200401{
402 display_version();
403 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200404 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200405 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200406 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100407 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200408 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200409 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200410 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200411 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200412 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100413#if defined(USE_SYSTEMD)
414 " -Ws master-worker mode with systemd notify support.\n"
415#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200416 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200417 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200418 " -n sets the maximum total # of connections (%d)\n"
419 " -m limits the usable amount of memory (in MB)\n"
420 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200421 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200422 " -p writes pids of all children to this file\n"
423#if defined(ENABLE_EPOLL)
424 " -de disables epoll() usage even when available\n"
425#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200426#if defined(ENABLE_KQUEUE)
427 " -dk disables kqueue() usage even when available\n"
428#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200429#if defined(ENABLE_POLL)
430 " -dp disables poll() usage even when available\n"
431#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200432#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100433 " -dS disables splice usage (broken on old kernels)\n"
434#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200435#if defined(USE_GETADDRINFO)
436 " -dG disables getaddrinfo() usage\n"
437#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000438#if defined(SO_REUSEPORT)
439 " -dR disables SO_REUSEPORT usage\n"
440#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100441 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100442 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200443 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200444 " -x <unix_socket> get listening sockets from a unix socket\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200445 "\n",
446 name, DEFAULT_MAXCONN, cfg_maxpconn);
447 exit(1);
448}
449
450
451
452/*********************************************************************/
453/* more specific functions ***************************************/
454/*********************************************************************/
455
William Lallemand73b85e72017-06-01 17:38:51 +0200456/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
457 * pids the signal was correctly delivered to.
458 */
459static int tell_old_pids(int sig)
460{
461 int p;
462 int ret = 0;
463 for (p = 0; p < nb_oldpids; p++)
464 if (kill(oldpids[p], sig) == 0)
465 ret++;
466 return ret;
467}
468
469/* return 1 if a pid is a current child otherwise 0 */
470
471int current_child(int pid)
472{
473 int i;
474
475 for (i = 0; i < global.nbproc; i++) {
476 if (children[i] == pid)
477 return 1;
478 }
479 return 0;
480}
481
482static void mworker_signalhandler(int signum)
483{
484 caught_signal = signum;
485}
486
487static void mworker_register_signals()
488{
489 struct sigaction sa;
490 /* Here we are not using the haproxy async way
491 for signals because it does not exists in
492 the master */
493 memset(&sa, 0, sizeof(struct sigaction));
494 sa.sa_handler = &mworker_signalhandler;
495 sigaction(SIGHUP, &sa, NULL);
496 sigaction(SIGUSR1, &sa, NULL);
497 sigaction(SIGUSR2, &sa, NULL);
498 sigaction(SIGINT, &sa, NULL);
499 sigaction(SIGTERM, &sa, NULL);
500}
501
502static void mworker_block_signals()
503{
504 sigset_t set;
505
506 sigemptyset(&set);
507 sigaddset(&set, SIGUSR1);
508 sigaddset(&set, SIGUSR2);
509 sigaddset(&set, SIGHUP);
510 sigaddset(&set, SIGINT);
511 sigaddset(&set, SIGTERM);
William Lallemand6e1796e2018-06-07 11:23:40 +0200512 ha_sigmask(SIG_SETMASK, &set, NULL);
William Lallemand73b85e72017-06-01 17:38:51 +0200513}
514
515static void mworker_unblock_signals()
516{
517 sigset_t set;
518
519 sigemptyset(&set);
520 sigaddset(&set, SIGUSR1);
521 sigaddset(&set, SIGUSR2);
522 sigaddset(&set, SIGHUP);
523 sigaddset(&set, SIGINT);
524 sigaddset(&set, SIGTERM);
William Lallemand6e1796e2018-06-07 11:23:40 +0200525 ha_sigmask(SIG_UNBLOCK, &set, NULL);
William Lallemand73b85e72017-06-01 17:38:51 +0200526}
527
528static void mworker_unregister_signals()
529{
530 signal(SIGINT, SIG_DFL);
531 signal(SIGTERM, SIG_DFL);
532 signal(SIGHUP, SIG_IGN);
533 signal(SIGUSR1, SIG_IGN);
534 signal(SIGUSR2, SIG_IGN);
535}
536
537/*
538 * Send signal to every known children.
539 */
540
541static void mworker_kill(int sig)
542{
543 int i;
544
545 tell_old_pids(sig);
546 if (children) {
547 for (i = 0; i < global.nbproc; i++)
548 kill(children[i], sig);
549 }
550}
551
Willy Tarreaubaaee002006-06-26 02:48:02 +0200552/*
William Lallemand75ea0a02017-11-15 19:02:58 +0100553 * Upon a reload, the master worker needs to close all listeners FDs but the mworker_pipe
554 * fd, and the FD provided by fd@
555 */
556static void mworker_cleanlisteners()
557{
558 struct listener *l, *l_next;
559 struct proxy *curproxy;
Willy Tarreau473cf5d2017-12-05 11:14:12 +0100560 struct peers *curpeers;
William Lallemand75ea0a02017-11-15 19:02:58 +0100561
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100562 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
Willy Tarreau473cf5d2017-12-05 11:14:12 +0100563 /* we might have to unbind some peers sections from some processes */
564 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
565 if (!curpeers->peers_fe)
566 continue;
567
568 stop_proxy(curpeers->peers_fe);
569 /* disable this peer section so that it kills itself */
570 signal_unregister_handler(curpeers->sighandler);
571 task_delete(curpeers->sync_task);
572 task_free(curpeers->sync_task);
573 curpeers->sync_task = NULL;
574 task_free(curpeers->peers_fe->task);
575 curpeers->peers_fe->task = NULL;
576 curpeers->peers_fe = NULL;
577 }
William Lallemand75ea0a02017-11-15 19:02:58 +0100578
579 list_for_each_entry_safe(l, l_next, &curproxy->conf.listeners, by_fe) {
580 /* does not close if the FD is inherited with fd@
581 * from the parent process */
582 if (!(l->options & LI_O_INHERITED)) {
583 close(l->fd);
584 LIST_DEL(&l->by_fe);
585 LIST_DEL(&l->by_bind);
586 free(l->name);
587 free(l->counters);
588 free(l);
589 }
590 }
591 }
592}
593
594
595/*
William Lallemand73b85e72017-06-01 17:38:51 +0200596 * remove a pid forom the olpid array and decrease nb_oldpids
597 * return 1 pid was found otherwise return 0
598 */
599
600int delete_oldpid(int pid)
601{
602 int i;
603
604 for (i = 0; i < nb_oldpids; i++) {
605 if (oldpids[i] == pid) {
606 oldpids[i] = oldpids[nb_oldpids - 1];
607 oldpids[nb_oldpids - 1] = 0;
608 nb_oldpids--;
609 return 1;
610 }
611 }
612 return 0;
613}
614
William Lallemand85b0bd92017-06-01 17:38:53 +0200615
616static void get_cur_unixsocket()
617{
618 /* if -x was used, try to update the stat socket if not available anymore */
619 if (global.stats_fe) {
620 struct bind_conf *bind_conf;
621
622 /* pass through all stats socket */
623 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
624 struct listener *l;
625
626 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
627
628 if (l->addr.ss_family == AF_UNIX &&
629 (bind_conf->level & ACCESS_FD_LISTENERS)) {
630 const struct sockaddr_un *un;
631
632 un = (struct sockaddr_un *)&l->addr;
633 /* priority to old_unixsocket */
634 if (!cur_unixsocket) {
635 cur_unixsocket = strdup(un->sun_path);
636 } else {
637 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
638 free(cur_unixsocket);
639 cur_unixsocket = strdup(old_unixsocket);
640 return;
641 }
642 }
643 }
644 }
645 }
646 }
647 if (!cur_unixsocket && old_unixsocket)
648 cur_unixsocket = strdup(old_unixsocket);
649}
650
William Lallemand73b85e72017-06-01 17:38:51 +0200651/*
652 * When called, this function reexec haproxy with -sf followed by current
653 * children PIDs and possibily old children PIDs if they didn't leave yet.
654 */
655static void mworker_reload()
656{
657 int next_argc = 0;
658 int j;
659 char *msg = NULL;
660
661 mworker_block_signals();
662 mworker_unregister_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100663#if defined(USE_SYSTEMD)
664 if (global.tune.options & GTUNE_USE_SYSTEMD)
665 sd_notify(0, "RELOADING=1");
666#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200667 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
668
669 /* compute length */
670 while (next_argv[next_argc])
671 next_argc++;
672
William Lallemand85b0bd92017-06-01 17:38:53 +0200673 /* 1 for haproxy -sf, 2 for -x /socket */
674 next_argv = realloc(next_argv, (next_argc + 1 + 2 + global.nbproc + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200675 if (next_argv == NULL)
676 goto alloc_error;
677
678
679 /* add -sf <PID>* to argv */
680 if (children || nb_oldpids > 0)
681 next_argv[next_argc++] = "-sf";
682 if (children) {
683 for (j = 0; j < global.nbproc; next_argc++,j++) {
684 next_argv[next_argc] = memprintf(&msg, "%d", children[j]);
685 if (next_argv[next_argc] == NULL)
686 goto alloc_error;
687 msg = NULL;
688 }
689 }
690 /* copy old process PIDs */
691 for (j = 0; j < nb_oldpids; next_argc++,j++) {
692 next_argv[next_argc] = memprintf(&msg, "%d", oldpids[j]);
693 if (next_argv[next_argc] == NULL)
694 goto alloc_error;
695 msg = NULL;
696 }
697 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200698
William Lallemand2bf6d622017-06-20 11:20:23 +0200699 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200700 if (cur_unixsocket) {
701
William Lallemand2bf6d622017-06-20 11:20:23 +0200702 next_argv[next_argc++] = "-x";
703 next_argv[next_argc++] = (char *)cur_unixsocket;
704 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200705 }
706
Christopher Faulet767a84b2017-11-24 16:50:31 +0100707 ha_warning("Reexecuting Master process\n");
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100708 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200709
Christopher Faulet767a84b2017-11-24 16:50:31 +0100710 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100711 return;
712
William Lallemand73b85e72017-06-01 17:38:51 +0200713alloc_error:
Christopher Faulet767a84b2017-11-24 16:50:31 +0100714 ha_warning("Failed to reexecute the master processs [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200715 return;
716}
717
718
719/*
720 * Wait for every children to exit
721 */
722
723static void mworker_wait()
724{
725 int exitpid = -1;
726 int status = 0;
727
William Lallemand2f8b31c2017-11-15 19:02:56 +0100728restart_wait:
729
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100730#if defined(USE_SYSTEMD)
731 if (global.tune.options & GTUNE_USE_SYSTEMD)
732 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
733#endif
734
William Lallemand73b85e72017-06-01 17:38:51 +0200735 mworker_register_signals();
736 mworker_unblock_signals();
737
738 while (1) {
739
740 while (((exitpid = wait(&status)) == -1) && errno == EINTR) {
741 int sig = caught_signal;
742 if (sig == SIGUSR2 || sig == SIGHUP) {
743 mworker_reload();
William Lallemand2f8b31c2017-11-15 19:02:56 +0100744 /* should reach there only if it fail */
745 goto restart_wait;
William Lallemand73b85e72017-06-01 17:38:51 +0200746 } else {
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100747#if defined(USE_SYSTEMD)
748 if ((global.tune.options & GTUNE_USE_SYSTEMD) && (sig == SIGUSR1 || sig == SIGTERM)) {
749 sd_notify(0, "STOPPING=1");
750 }
751#endif
Christopher Faulet767a84b2017-11-24 16:50:31 +0100752 ha_warning("Exiting Master process...\n");
William Lallemand73b85e72017-06-01 17:38:51 +0200753 mworker_kill(sig);
754 mworker_unregister_signals();
755 }
756 caught_signal = 0;
757 }
758
759 if (exitpid == -1 && errno == ECHILD) {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100760 ha_warning("All workers exited. Exiting... (%d)\n", status);
William Lallemandcb11fd22017-06-01 17:38:52 +0200761 atexit_flag = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200762 exit(status); /* parent must leave using the latest status code known */
763 }
764
765 if (WIFEXITED(status))
766 status = WEXITSTATUS(status);
767 else if (WIFSIGNALED(status))
768 status = 128 + WTERMSIG(status);
769 else if (WIFSTOPPED(status))
770 status = 128 + WSTOPSIG(status);
771 else
772 status = 255;
773
774 if (!children) {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100775 ha_warning("Worker %d exited with code %d\n", exitpid, status);
William Lallemand73b85e72017-06-01 17:38:51 +0200776 } else {
777 /* check if exited child was in the current children list */
778 if (current_child(exitpid)) {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100779 ha_alert("Current worker %d exited with code %d\n", exitpid, status);
William Lallemand69f9b3b2017-06-01 17:38:54 +0200780 if (status != 0 && status != 130 && status != 143
William Lallemand4cfede82017-11-24 22:02:34 +0100781 && !(global.tune.options & GTUNE_NOEXIT_ONFAILURE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100782 ha_alert("exit-on-failure: killing every workers with SIGTERM\n");
William Lallemand69f9b3b2017-06-01 17:38:54 +0200783 mworker_kill(SIGTERM);
784 }
William Lallemand73b85e72017-06-01 17:38:51 +0200785 } else {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100786 ha_warning("Former worker %d exited with code %d\n", exitpid, status);
William Lallemand73b85e72017-06-01 17:38:51 +0200787 delete_oldpid(exitpid);
788 }
789 }
790 }
791}
792
William Lallemandcb11fd22017-06-01 17:38:52 +0200793
794/*
795 * Reexec the process in failure mode, instead of exiting
796 */
797void reexec_on_failure()
798{
799 if (!atexit_flag)
800 return;
801
802 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
803
Christopher Faulet767a84b2017-11-24 16:50:31 +0100804 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200805 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200806}
William Lallemand73b85e72017-06-01 17:38:51 +0200807
808
809/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200810 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
811 * a signal zero to all subscribers. This means that it's as easy as
812 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200813 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100814static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200815{
816 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200817 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100818 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200819}
820
821/*
822 * upon SIGTTOU, we pause everything
823 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100824static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200825{
826 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100827 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200828}
829
830/*
831 * upon SIGTTIN, let's have a soft stop.
832 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100833static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200834{
Willy Tarreaube58c382011-07-24 18:28:10 +0200835 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200836}
837
838/*
839 * this function dumps every server's state when the process receives SIGHUP.
840 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100841static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200842{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100843 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200844
Christopher Faulet767a84b2017-11-24 16:50:31 +0100845 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200846 while (p) {
847 struct server *s = p->srv;
848
849 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
850 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100851 chunk_printf(&trash,
852 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
853 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200854 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100855 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200856 ha_warning("%s\n", trash.area);
857 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200858 s = s->next;
859 }
860
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200861 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
862 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100863 chunk_printf(&trash,
864 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
865 p->id,
866 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 +0200867 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100868 chunk_printf(&trash,
869 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
870 p->id,
871 (p->srv_bck) ? "is running on backup servers" : "has no server available",
872 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 +0200873 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100874 chunk_printf(&trash,
875 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
876 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
877 p->id, p->srv_act, p->srv_bck,
878 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 +0200879 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200880 ha_warning("%s\n", trash.area);
881 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200882
883 p = p->next;
884 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200885}
886
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100887static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200888{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200889 /* dump memory usage then free everything possible */
890 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100891 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200892}
893
William Lallemande1340412017-12-28 16:09:36 +0100894/*
895 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
896 * If <fd> < 0, it opens /dev/null and use it to dup
897 *
898 * In the case of chrooting, you have to open /dev/null before the chroot, and
899 * pass the <fd> to this function
900 */
901static void stdio_quiet(int fd)
902{
903 if (fd < 0)
904 fd = open("/dev/null", O_RDWR, 0);
905
906 if (fd > -1) {
907 fclose(stdin);
908 fclose(stdout);
909 fclose(stderr);
910
911 dup2(fd, 0);
912 dup2(fd, 1);
913 dup2(fd, 2);
914 if (fd > 2)
915 close(fd);
916 return;
917 }
918
919 ha_alert("Cannot open /dev/null\n");
920 exit(EXIT_FAILURE);
921}
922
923
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200924/* This function check if cfg_cfgfiles containes directories.
925 * If it find one, it add all the files (and only files) it containes
926 * in cfg_cfgfiles in place of the directory (and remove the directory).
927 * It add the files in lexical order.
928 * It add only files with .cfg extension.
929 * It doesn't add files with name starting with '.'
930 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100931static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200932{
933 struct wordlist *wl, *wlb;
934 char *err = NULL;
935
936 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
937 struct stat file_stat;
938 struct dirent **dir_entries = NULL;
939 int dir_entries_nb;
940 int dir_entries_it;
941
942 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100943 ha_alert("Cannot open configuration file/directory %s : %s\n",
944 wl->s,
945 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200946 exit(1);
947 }
948
949 if (!S_ISDIR(file_stat.st_mode))
950 continue;
951
952 /* from this point wl->s is a directory */
953
954 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
955 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100956 ha_alert("Cannot open configuration directory %s : %s\n",
957 wl->s,
958 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200959 exit(1);
960 }
961
962 /* for each element in the directory wl->s */
963 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
964 struct dirent *dir_entry = dir_entries[dir_entries_it];
965 char *filename = NULL;
966 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
967
968 /* don't add filename that begin with .
969 * only add filename with .cfg extention
970 */
971 if (dir_entry->d_name[0] == '.' ||
972 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
973 goto next_dir_entry;
974
975 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100976 ha_alert("Cannot load configuration files %s : out of memory.\n",
977 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200978 exit(1);
979 }
980
981 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100982 ha_alert("Cannot open configuration file %s : %s\n",
983 wl->s,
984 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200985 exit(1);
986 }
987
988 /* don't add anything else than regular file in cfg_cfgfiles
989 * this way we avoid loops
990 */
991 if (!S_ISREG(file_stat.st_mode))
992 goto next_dir_entry;
993
994 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100995 ha_alert("Cannot load configuration files %s : %s\n",
996 filename,
997 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200998 exit(1);
999 }
1000
1001next_dir_entry:
1002 free(filename);
1003 free(dir_entry);
1004 }
1005
1006 free(dir_entries);
1007
1008 /* remove the current directory (wl) from cfg_cfgfiles */
1009 free(wl->s);
1010 LIST_DEL(&wl->list);
1011 free(wl);
1012 }
1013
1014 free(err);
1015}
1016
Olivier Houchardf73629d2017-04-05 22:33:04 +02001017static int get_old_sockets(const char *unixsocket)
1018{
1019 char *cmsgbuf = NULL, *tmpbuf = NULL;
1020 int *tmpfd = NULL;
1021 struct sockaddr_un addr;
1022 struct cmsghdr *cmsg;
1023 struct msghdr msghdr;
1024 struct iovec iov;
1025 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001026 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001027 int sock = -1;
1028 int ret = -1;
1029 int ret2 = -1;
1030 int fd_nb;
1031 int got_fd = 0;
1032 int i = 0;
1033 size_t maxoff = 0, curoff = 0;
1034
1035 memset(&msghdr, 0, sizeof(msghdr));
1036 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1037 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001038 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001039 goto out;
1040 }
1041 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1042 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001043 ha_warning("Failed to connect to the old process socket '%s'\n",
1044 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001045 goto out;
1046 }
1047 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1048 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1049 addr.sun_family = PF_UNIX;
1050 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1051 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001052 ha_warning("Failed to connect to the old process socket '%s'\n",
1053 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001054 goto out;
1055 }
Olivier Houchard54740872017-04-06 14:45:14 +02001056 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001057 iov.iov_base = &fd_nb;
1058 iov.iov_len = sizeof(fd_nb);
1059 msghdr.msg_iov = &iov;
1060 msghdr.msg_iovlen = 1;
1061 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1062 /* First, get the number of file descriptors to be received */
1063 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001064 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001065 goto out;
1066 }
1067 if (fd_nb == 0) {
1068 ret = 0;
1069 goto out;
1070 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001071 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001072 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001073 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001074 goto out;
1075 }
1076 tmpfd = malloc(fd_nb * sizeof(int));
1077 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001078 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001079 goto out;
1080 }
1081 msghdr.msg_control = cmsgbuf;
1082 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001083 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001084 do {
1085 int ret3;
1086
1087 iov.iov_base = tmpbuf + curoff;
1088 ret = recvmsg(sock, &msghdr, 0);
1089 if (ret == -1 && errno == EINTR)
1090 continue;
1091 if (ret <= 0)
1092 break;
1093 /* Send an ack to let the sender know we got the sockets
1094 * and it can send some more
1095 */
1096 do {
1097 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1098 } while (ret3 == -1 && errno == EINTR);
1099 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1100 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1101 if (cmsg->cmsg_level == SOL_SOCKET &&
1102 cmsg->cmsg_type == SCM_RIGHTS) {
1103 size_t totlen = cmsg->cmsg_len -
1104 CMSG_LEN(0);
1105 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001106 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001107 goto out;
1108 }
1109 /*
1110 * Be paranoid and use memcpy() to avoid any
1111 * potential alignement issue.
1112 */
1113 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1114 got_fd += totlen / sizeof(int);
1115 }
1116 }
1117 curoff += ret;
1118 } while (got_fd < fd_nb);
1119
1120 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001121 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1122 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001123 goto out;
1124 }
1125 maxoff = curoff;
1126 curoff = 0;
1127 for (i = 0; i < got_fd; i++) {
1128 int fd = tmpfd[i];
1129 socklen_t socklen;
1130 int len;
1131
1132 xfer_sock = calloc(1, sizeof(*xfer_sock));
1133 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001134 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001135 break;
1136 }
1137 xfer_sock->fd = -1;
1138
1139 socklen = sizeof(xfer_sock->addr);
1140 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001141 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001142 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001143 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001144 continue;
1145 }
1146 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001147 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001148 goto out;
1149 }
1150 len = tmpbuf[curoff++];
1151 if (len > 0) {
1152 /* We have a namespace */
1153 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001154 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001155 goto out;
1156 }
1157 xfer_sock->namespace = malloc(len + 1);
1158 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001159 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001160 goto out;
1161 }
1162 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1163 xfer_sock->namespace[len] = 0;
1164 curoff += len;
1165 }
1166 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001167 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001168 goto out;
1169 }
1170 len = tmpbuf[curoff++];
1171 if (len > 0) {
1172 /* We have an interface */
1173 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001174 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001175 goto out;
1176 }
1177 xfer_sock->iface = malloc(len + 1);
1178 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001179 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001180 goto out;
1181 }
1182 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001183 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001184 curoff += len;
1185 }
1186 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001187 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001188 goto out;
1189 }
1190 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1191 sizeof(xfer_sock->options));
1192 curoff += sizeof(xfer_sock->options);
1193
1194 xfer_sock->fd = fd;
1195 if (xfer_sock_list)
1196 xfer_sock_list->prev = xfer_sock;
1197 xfer_sock->next = xfer_sock_list;
1198 xfer_sock->prev = NULL;
1199 xfer_sock_list = xfer_sock;
1200 xfer_sock = NULL;
1201 }
1202
1203 ret2 = 0;
1204out:
1205 /* If we failed midway make sure to close the remaining
1206 * file descriptors
1207 */
1208 if (tmpfd != NULL && i < got_fd) {
1209 for (; i < got_fd; i++) {
1210 close(tmpfd[i]);
1211 }
1212 }
1213 free(tmpbuf);
1214 free(tmpfd);
1215 free(cmsgbuf);
1216 if (sock != -1)
1217 close(sock);
1218 if (xfer_sock) {
1219 free(xfer_sock->namespace);
1220 free(xfer_sock->iface);
1221 if (xfer_sock->fd != -1)
1222 close(xfer_sock->fd);
1223 free(xfer_sock);
1224 }
1225 return (ret2);
1226}
1227
Willy Tarreaubaaee002006-06-26 02:48:02 +02001228/*
William Lallemand73b85e72017-06-01 17:38:51 +02001229 * copy and cleanup the current argv
1230 * Remove the -sf /-st parameters
1231 * Return an allocated copy of argv
1232 */
1233
1234static char **copy_argv(int argc, char **argv)
1235{
1236 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001237 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001238
1239 newargv = calloc(argc + 2, sizeof(char *));
1240 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001241 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001242 return NULL;
1243 }
1244
William Lallemand2bf6d622017-06-20 11:20:23 +02001245 while (i < argc) {
1246 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001247 if (i > 0 && argv[i][0] == '-' &&
1248 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001249 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001250 i++;
1251 while (i < argc && argv[i][0] != '-') {
1252 i++;
1253 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001254 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001255 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001256
1257 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001258 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001259
William Lallemand73b85e72017-06-01 17:38:51 +02001260 return newargv;
1261}
1262
1263/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001264 * This function initializes all the necessary variables. It only returns
1265 * if everything is OK. If something fails, it exits.
1266 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001267static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001268{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001269 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001270 char *tmp;
1271 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001272 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001273 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001274 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001275 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001276 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001277 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001278 struct post_check_fct *pcf;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001279
Christopher Faulete3a5e352017-10-24 13:53:54 +02001280 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001281 next_argv = copy_argv(argc, argv);
1282
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001283 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001284 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001285 exit(1);
1286 }
David du Colombier7af46052012-05-16 14:16:48 +02001287
Emeric Brun2b920a12010-09-23 18:30:22 +02001288 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1289 * the string in case of truncation, and at least FreeBSD appears not to do
1290 * it.
1291 */
1292 memset(hostname, 0, sizeof(hostname));
1293 gethostname(hostname, sizeof(hostname) - 1);
1294 memset(localpeer, 0, sizeof(localpeer));
1295 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001296 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001297
Willy Tarreaubaaee002006-06-26 02:48:02 +02001298 /*
1299 * Initialize the previously static variables.
1300 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001301
Willy Tarreau173d9952018-01-26 21:48:23 +01001302 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001303 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001304
Willy Tarreaubaaee002006-06-26 02:48:02 +02001305
1306#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001307 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001308#endif
1309
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001310 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001311 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001312 start_date = now;
1313
Willy Tarreau84310e22014-02-14 11:59:04 +01001314 srandom(now_ms - getpid());
1315
Dragan Dosen835b9212016-02-12 13:23:03 +01001316 init_log();
Willy Tarreau29857942009-05-10 09:01:21 +02001317 signal_init();
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001318 if (init_acl() != 0)
1319 exit(1);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001320 init_task();
Willy Tarreau87b09662015-04-03 00:22:06 +02001321 init_stream();
Willy Tarreaub1ec8c42015-04-03 13:53:24 +02001322 init_session();
Willy Tarreauf2943dc2012-10-26 20:10:28 +02001323 init_connection();
Willy Tarreau8280d642009-09-23 23:37:52 +02001324 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001325 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +01001326 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001327
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001328 /* Initialise lua. */
1329 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001330
Christopher Fauletff2613e2016-11-09 11:36:17 +01001331 /* Initialize process vars */
1332 vars_init(&global.vars, SCOPE_PROC);
1333
Willy Tarreau43b78992009-01-25 15:42:27 +01001334 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001335#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001336 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001337#endif
1338#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001339 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001340#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001341#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001342 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001343#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001344#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001345 global.tune.options |= GTUNE_USE_SPLICE;
1346#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001347#if defined(USE_GETADDRINFO)
1348 global.tune.options |= GTUNE_USE_GAI;
1349#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001350#if defined(SO_REUSEPORT)
1351 global.tune.options |= GTUNE_USE_REUSEPORT;
1352#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001353
1354 pid = getpid();
1355 progname = *argv;
1356 while ((tmp = strchr(progname, '/')) != NULL)
1357 progname = tmp + 1;
1358
Kevinm48936af2010-12-22 16:08:21 +00001359 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001360 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001361
Willy Tarreaubaaee002006-06-26 02:48:02 +02001362 argc--; argv++;
1363 while (argc > 0) {
1364 char *flag;
1365
1366 if (**argv == '-') {
1367 flag = *argv+1;
1368
1369 /* 1 arg */
1370 if (*flag == 'v') {
1371 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001372 if (flag[1] == 'v') /* -vv */
1373 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001374 exit(0);
1375 }
1376#if defined(ENABLE_EPOLL)
1377 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001378 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001379#endif
1380#if defined(ENABLE_POLL)
1381 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001382 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001383#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +02001384#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001385 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001386 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001387#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001388#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001389 else if (*flag == 'd' && flag[1] == 'S')
1390 global.tune.options &= ~GTUNE_USE_SPLICE;
1391#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001392#if defined(USE_GETADDRINFO)
1393 else if (*flag == 'd' && flag[1] == 'G')
1394 global.tune.options &= ~GTUNE_USE_GAI;
1395#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001396#if defined(SO_REUSEPORT)
1397 else if (*flag == 'd' && flag[1] == 'R')
1398 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1399#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001400 else if (*flag == 'd' && flag[1] == 'V')
1401 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001402 else if (*flag == 'V')
1403 arg_mode |= MODE_VERBOSE;
1404 else if (*flag == 'd' && flag[1] == 'b')
1405 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001406 else if (*flag == 'd' && flag[1] == 'M')
1407 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001408 else if (*flag == 'd' && flag[1] == 'r')
1409 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001410 else if (*flag == 'd')
1411 arg_mode |= MODE_DEBUG;
1412 else if (*flag == 'c')
1413 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001414 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001415 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001416 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001417 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001418#if defined(USE_SYSTEMD)
1419 global.tune.options |= GTUNE_USE_SYSTEMD;
1420#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001421 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 +01001422 usage(progname);
1423#endif
1424 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001425 else if (*flag == 'W')
1426 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001427 else if (*flag == 'q')
1428 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001429 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001430 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001431 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001432 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001433 }
William Lallemand4fc09692017-06-19 16:37:19 +02001434 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001435 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001436 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001437
Olivier Houchardf73629d2017-04-05 22:33:04 +02001438 argv++;
1439 argc--;
1440 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001441 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1442 /* list of pids to finish ('f') or terminate ('t') */
1443
1444 if (flag[1] == 'f')
1445 oldpids_sig = SIGUSR1; /* finish then exit */
1446 else
1447 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001448 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001449 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001450 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1451 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001452 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001453 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001454 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001455 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001456 errno = 0;
1457 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1458 if (errno) {
1459 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1460 flag,
1461 *argv, strerror(errno));
1462 exit(1);
1463 } else if (endptr && strlen(endptr)) {
1464 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001465 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001466 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1467 flag, endptr);
1468 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001469 }
Chris Lane236062f2018-02-05 23:15:44 +00001470 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001471 if (oldpids[nb_oldpids] <= 0)
1472 usage(progname);
1473 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001474 }
1475 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001476 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1477 /* now that's a cfgfile list */
1478 argv++; argc--;
1479 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001480 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001481 ha_alert("Cannot load configuration file/directory %s : %s\n",
1482 *argv,
1483 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001484 exit(1);
1485 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001486 argv++; argc--;
1487 }
1488 break;
1489 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001490 else { /* >=2 args */
1491 argv++; argc--;
1492 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001493 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001494
1495 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001496 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001497 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001498 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001499 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001500 case 'L' :
1501 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1502 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1503 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001504 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001505 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001506 ha_alert("Cannot load configuration file/directory %s : %s\n",
1507 *argv,
1508 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001509 exit(1);
1510 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001511 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001512 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001513 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001514 }
1515 }
1516 }
1517 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001518 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001519 argv++; argc--;
1520 }
1521
Christopher Faulete3a5e352017-10-24 13:53:54 +02001522 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1523 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001524
William Lallemandcb11fd22017-06-01 17:38:52 +02001525 /* Master workers wait mode */
1526 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_WAIT_ONLY") != NULL)) {
1527
1528 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
1529 mworker_wait();
1530 }
1531
1532 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1533 atexit_flag = 1;
1534 atexit(reexec_on_failure);
1535 }
1536
Willy Tarreau576132e2011-09-10 19:26:56 +02001537 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001538 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001539 exit(1);
1540 }
1541
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001542 /* handle cfgfiles that are actualy directories */
1543 cfgfiles_expand_directories();
1544
1545 if (LIST_ISEMPTY(&cfg_cfgfiles))
1546 usage(progname);
1547
Willy Tarreaubaaee002006-06-26 02:48:02 +02001548 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001549
1550 init_default_instance();
1551
Willy Tarreau477ecd82010-01-03 21:12:30 +01001552 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +01001553 int ret;
1554
Willy Tarreau477ecd82010-01-03 21:12:30 +01001555 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +01001556 if (ret == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001557 ha_alert("Could not open configuration file %s : %s\n",
1558 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +01001559 exit(1);
1560 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001561 if (ret & (ERR_ABORT|ERR_FATAL))
Christopher Faulet767a84b2017-11-24 16:50:31 +01001562 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001563 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +02001564 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +02001565 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001566 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001567
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001568 /* do not try to resolve arguments nor to spot inconsistencies when
1569 * the configuration contains fatal errors caused by files not found
1570 * or failed memory allocations.
1571 */
1572 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001573 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001574 exit(1);
1575 }
1576
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +01001577 pattern_finalize_config();
1578
Willy Tarreaubb925012009-07-23 13:36:36 +02001579 err_code |= check_config_validity();
1580 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001581 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001582 exit(1);
1583 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001584
Willy Tarreau70060452015-12-14 12:46:07 +01001585 /* recompute the amount of per-process memory depending on nbproc and
1586 * the shared SSL cache size (allowed to exist in all processes).
1587 */
1588 if (global.rlimit_memmax_all) {
1589#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1590 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1591
1592 global.rlimit_memmax =
1593 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1594 ssl_cache_bytes) / global.nbproc +
1595 ssl_cache_bytes + 1048575LL) / 1048576LL;
1596#else
1597 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1598#endif
1599 }
1600
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001601#ifdef CONFIG_HAP_NS
1602 err_code |= netns_init();
1603 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001604 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001605 exit(1);
1606 }
1607#endif
1608
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001609 /* Apply server states */
1610 apply_server_state();
1611
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001612 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001613 srv_compute_all_admin_states(px);
1614
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001615 /* Apply servers' configured address */
1616 err_code |= srv_init_addr();
1617 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001618 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001619 exit(1);
1620 }
1621
Willy Tarreaubaaee002006-06-26 02:48:02 +02001622 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001623 struct peers *pr;
1624 struct proxy *px;
1625
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001626 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001627 if (pr->peers_fe)
1628 break;
1629
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001630 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001631 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001632 break;
1633
1634 if (pr || px) {
1635 /* At least one peer or one listener has been found */
1636 qfprintf(stdout, "Configuration file is valid\n");
1637 exit(0);
1638 }
1639 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1640 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001641 }
1642
Emeric Brunc60def82017-09-27 14:59:38 +02001643 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001644 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001645 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001646 exit(1);
1647 }
1648 /* very simple initialization, users will queue the task if needed */
1649 global_listener_queue_task->context = NULL; /* not even a context! */
1650 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001651
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001652 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001653 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001654
Willy Tarreaue6945732016-12-21 19:57:00 +01001655 list_for_each_entry(pcf, &post_check_list, list) {
1656 err_code |= pcf->fct();
1657 if (err_code & (ERR_ABORT|ERR_FATAL))
1658 exit(1);
1659 }
1660
Willy Tarreaubaaee002006-06-26 02:48:02 +02001661 if (cfg_maxconn > 0)
1662 global.maxconn = cfg_maxconn;
1663
1664 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001665 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001666 global.pidfile = strdup(cfg_pidfile);
1667 }
1668
Willy Tarreaud0256482015-01-15 21:45:22 +01001669 /* Now we want to compute the maxconn and possibly maxsslconn values.
1670 * It's a bit tricky. If memmax is not set, maxconn defaults to
1671 * DEFAULT_MAXCONN and maxsslconn defaults to DEFAULT_MAXSSLCONN.
1672 *
1673 * If memmax is set, then it depends on which values are set. If
1674 * maxsslconn is set, we use memmax to determine how many cleartext
1675 * connections may be added, and set maxconn to the sum of the two.
1676 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1677 * the remaining amount of memory between memmax and the cleartext
1678 * connections. If neither are set, then it is considered that all
1679 * connections are SSL-capable, and maxconn is computed based on this,
1680 * then maxsslconn accordingly. We need to know if SSL is used on the
1681 * frontends, backends, or both, because when it's used on both sides,
1682 * we need twice the value for maxsslconn, but we only count the
1683 * handshake once since it is not performed on the two sides at the
1684 * same time (frontend-side is terminated before backend-side begins).
1685 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001686 * ssl_handshake_cost during its initialization. In any case, if
1687 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1688 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001689 */
1690 if (!global.rlimit_memmax) {
1691 if (global.maxconn == 0) {
1692 global.maxconn = DEFAULT_MAXCONN;
1693 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1694 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1695 }
1696 }
1697#ifdef USE_OPENSSL
1698 else if (!global.maxconn && !global.maxsslconn &&
1699 (global.ssl_used_frontend || global.ssl_used_backend)) {
1700 /* memmax is set, compute everything automatically. Here we want
1701 * to ensure that all SSL connections will be served. We take
1702 * care of the number of sides where SSL is used, and consider
1703 * the worst case : SSL used on both sides and doing a handshake
1704 * simultaneously. Note that we can't have more than maxconn
1705 * handshakes at a time by definition, so for the worst case of
1706 * two SSL conns per connection, we count a single handshake.
1707 */
1708 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1709 int64_t mem = global.rlimit_memmax * 1048576ULL;
1710
1711 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1712 mem -= global.maxzlibmem;
1713 mem = mem * MEM_USABLE_RATIO;
1714
1715 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001716 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001717 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1718 global.ssl_handshake_max_cost); // 1 handshake per connection max
1719
1720 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001721#ifdef SYSTEM_MAXCONN
1722 if (global.maxconn > DEFAULT_MAXCONN)
1723 global.maxconn = DEFAULT_MAXCONN;
1724#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001725 global.maxsslconn = sides * global.maxconn;
1726 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1727 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1728 global.maxconn, global.maxsslconn);
1729 }
1730 else if (!global.maxsslconn &&
1731 (global.ssl_used_frontend || global.ssl_used_backend)) {
1732 /* memmax and maxconn are known, compute maxsslconn automatically.
1733 * maxsslconn being forced, we don't know how many of it will be
1734 * on each side if both sides are being used. The worst case is
1735 * when all connections use only one SSL instance because
1736 * handshakes may be on two sides at the same time.
1737 */
1738 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1739 int64_t mem = global.rlimit_memmax * 1048576ULL;
1740 int64_t sslmem;
1741
1742 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1743 mem -= global.maxzlibmem;
1744 mem = mem * MEM_USABLE_RATIO;
1745
Willy Tarreau87b09662015-04-03 00:22:06 +02001746 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001747 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1748 global.maxsslconn = round_2dig(global.maxsslconn);
1749
1750 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001751 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1752 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1753 "without SSL is %d, but %d was found and SSL is in use.\n",
1754 global.rlimit_memmax,
1755 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
1756 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001757 exit(1);
1758 }
1759
1760 if (global.maxsslconn > sides * global.maxconn)
1761 global.maxsslconn = sides * global.maxconn;
1762
1763 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1764 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1765 }
1766#endif
1767 else if (!global.maxconn) {
1768 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1769 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1770 int64_t mem = global.rlimit_memmax * 1048576ULL;
1771 int64_t clearmem;
1772
1773 if (global.ssl_used_frontend || global.ssl_used_backend)
1774 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1775
1776 mem -= global.maxzlibmem;
1777 mem = mem * MEM_USABLE_RATIO;
1778
1779 clearmem = mem;
1780 if (sides)
1781 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1782
Willy Tarreau87b09662015-04-03 00:22:06 +02001783 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001784 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001785#ifdef SYSTEM_MAXCONN
1786 if (global.maxconn > DEFAULT_MAXCONN)
1787 global.maxconn = DEFAULT_MAXCONN;
1788#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001789
1790 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001791 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1792 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1793 "is %d, but %d was found.\n",
1794 global.rlimit_memmax,
1795 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1796 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001797 exit(1);
1798 }
1799
1800 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1801 if (sides && global.maxsslconn > sides * global.maxconn) {
1802 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
1803 "to be limited to %d. Better reduce global.maxsslconn to get more "
1804 "room for extra connections.\n", global.maxsslconn, global.maxconn);
1805 }
1806 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
1807 }
1808 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001809
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001810 if (!global.maxpipes) {
1811 /* maxpipes not specified. Count how many frontends and backends
1812 * may be using splicing, and bound that to maxconn.
1813 */
1814 struct proxy *cur;
1815 int nbfe = 0, nbbe = 0;
1816
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001817 for (cur = proxies_list; cur; cur = cur->next) {
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001818 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1819 if (cur->cap & PR_CAP_FE)
1820 nbfe += cur->maxconn;
1821 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +01001822 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001823 }
1824 }
1825 global.maxpipes = MAX(nbfe, nbbe);
1826 if (global.maxpipes > global.maxconn)
1827 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +01001828 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001829 }
1830
1831
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001832 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001833 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01001834 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Emeric Brunece0c332017-12-06 13:51:49 +01001835 /* compute fd used by async engines */
1836 if (global.ssl_used_async_engines) {
1837 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1838 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
1839 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001840
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001841 if (global.stats_fe)
1842 global.maxsock += global.stats_fe->maxconn;
1843
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001844 if (cfg_peers) {
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001845 /* peers also need to bypass global maxconn */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001846 struct peers *p = cfg_peers;
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001847
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001848 for (p = cfg_peers; p; p = p->next)
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001849 if (p->peers_fe)
1850 global.maxsock += p->peers_fe->maxconn;
1851 }
1852
Willy Tarreau1db37712007-06-03 17:16:49 +02001853 if (global.tune.maxpollevents <= 0)
1854 global.tune.maxpollevents = MAX_POLL_EVENTS;
1855
Olivier Houchard1599b802018-05-24 18:59:04 +02001856 if (global.tune.runqueue_depth <= 0)
1857 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
1858
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01001859 if (global.tune.recv_enough == 0)
1860 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
1861
Willy Tarreau27097842015-09-28 13:53:23 +02001862 if (global.tune.maxrewrite < 0)
1863 global.tune.maxrewrite = MAXREWRITE;
1864
Willy Tarreau27a674e2009-08-17 07:23:33 +02001865 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
1866 global.tune.maxrewrite = global.tune.bufsize / 2;
1867
Willy Tarreaubaaee002006-06-26 02:48:02 +02001868 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
1869 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02001870 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001871 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
1872 }
1873
William Lallemand095ba4c2017-06-01 17:38:50 +02001874 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001875 /* command line daemon mode inhibits foreground and debug modes mode */
1876 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02001877 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001878 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001879
1880 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001881
William Lallemand095ba4c2017-06-01 17:38:50 +02001882 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001883 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02001884 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001885 }
1886
William Lallemand095ba4c2017-06-01 17:38:50 +02001887 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001888 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01001889 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 +02001890 global.nbproc = 1;
1891 }
1892
1893 if (global.nbproc < 1)
1894 global.nbproc = 1;
1895
Christopher Fauletbe0faa22017-08-29 15:37:10 +02001896 if (global.nbthread < 1)
1897 global.nbthread = 1;
1898
Christopher Faulet3ef26392017-08-29 16:46:57 +02001899 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001900 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001901 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02001902 exit(1);
1903 }
1904
Christopher Faulet96d44832017-11-14 22:02:30 +01001905 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001906 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01001907 exit(1);
1908 }
1909
Willy Tarreauef1d1f82007-04-16 00:25:25 +02001910 /*
1911 * Note: we could register external pollers here.
1912 * Built-in pollers have been registered before main().
1913 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001914
Willy Tarreau43b78992009-01-25 15:42:27 +01001915 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001916 disable_poller("kqueue");
1917
Willy Tarreau43b78992009-01-25 15:42:27 +01001918 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001919 disable_poller("epoll");
1920
Willy Tarreau43b78992009-01-25 15:42:27 +01001921 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001922 disable_poller("poll");
1923
Willy Tarreau43b78992009-01-25 15:42:27 +01001924 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001925 disable_poller("select");
1926
1927 /* Note: we could disable any poller by name here */
1928
Christopher Fauletb3f4e142016-03-07 12:46:38 +01001929 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02001930 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01001931 fprintf(stderr, "\n");
1932 list_filters(stderr);
1933 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001934
Willy Tarreau4f60f162007-04-08 16:39:58 +02001935 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001936 ha_alert("No polling mechanism available.\n"
1937 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
1938 " is too low on this platform to support maxconn and the number of listeners\n"
1939 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
1940 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
1941 " global maxconn setting to accommodate the system's limitation. For reference,\n"
1942 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
1943 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
1944 " check build settings using 'haproxy -vv'.\n\n",
1945 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001946 exit(1);
1947 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001948 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1949 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001950 }
1951
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001952 if (!global.node)
1953 global.node = strdup(hostname);
1954
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01001955 if (!hlua_post_init())
1956 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01001957
Maxime de Roucy0f503922016-05-13 23:52:55 +02001958 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001959}
1960
Simon Horman6fb82592011-07-15 13:14:11 +09001961static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09001962{
Simon Hormanac821422011-07-15 13:14:09 +09001963 struct acl_term_suite *suite, *suiteb;
1964 struct acl_term *term, *termb;
1965
Simon Horman6fb82592011-07-15 13:14:11 +09001966 if (!cond)
1967 return;
1968
1969 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
1970 list_for_each_entry_safe(term, termb, &suite->terms, list) {
1971 LIST_DEL(&term->list);
1972 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09001973 }
Simon Horman6fb82592011-07-15 13:14:11 +09001974 LIST_DEL(&suite->list);
1975 free(suite);
1976 }
1977
1978 free(cond);
1979}
1980
1981static void deinit_tcp_rules(struct list *rules)
1982{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02001983 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09001984
1985 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09001986 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09001987 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09001988 free(trule);
1989 }
1990}
1991
Simon Horman6fb82592011-07-15 13:14:11 +09001992static void deinit_stick_rules(struct list *rules)
1993{
1994 struct sticking_rule *rule, *ruleb;
1995
1996 list_for_each_entry_safe(rule, ruleb, rules, list) {
1997 LIST_DEL(&rule->list);
1998 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02001999 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002000 free(rule);
2001 }
2002}
2003
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002004void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002005{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002006 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002007 struct cap_hdr *h,*h_next;
2008 struct server *s,*s_next;
2009 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002010 struct acl_cond *cond, *condb;
2011 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002012 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002013 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002014 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002015 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002016 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01002017 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002018 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002019 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002020 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002021 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002022 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002023 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002024 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002025
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002026 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002027 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002028 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002029 free(p->id);
2030 free(p->check_req);
2031 free(p->cookie_name);
2032 free(p->cookie_domain);
2033 free(p->url_param_name);
2034 free(p->capture_name);
2035 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002036 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002037 if (p->conf.logformat_string != default_http_log_format &&
2038 p->conf.logformat_string != default_tcp_log_format &&
2039 p->conf.logformat_string != clf_http_log_format)
2040 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002041
Willy Tarreau62a61232013-04-12 18:13:46 +02002042 free(p->conf.lfs_file);
2043 free(p->conf.uniqueid_format_string);
2044 free(p->conf.uif_file);
Godbachaf1a75d2013-10-02 17:10:11 +08002045 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002046
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002047 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2048 free(p->conf.logformat_sd_string);
2049 free(p->conf.lfsd_file);
2050
Willy Tarreaua534fea2008-08-03 12:19:50 +02002051 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002052 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002053
Willy Tarreauf4f04122010-01-28 18:10:50 +01002054 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
2055 LIST_DEL(&cwl->list);
2056 free(cwl->s);
2057 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002058 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002059
Willy Tarreauf4f04122010-01-28 18:10:50 +01002060 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
2061 LIST_DEL(&cwl->list);
2062 free(cwl->s);
2063 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002064 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002065
Willy Tarreaub80c2302007-11-30 20:51:32 +01002066 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2067 LIST_DEL(&cond->list);
2068 prune_acl_cond(cond);
2069 free(cond);
2070 }
2071
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002072 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002073 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002074 regex_free(exp->preg);
2075 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002076 }
2077
Willy Tarreau98d04852015-05-26 12:18:29 +02002078 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002079 expb = exp;
2080 exp = exp->next;
2081 free(expb);
2082 }
2083
2084 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002085 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002086 regex_free(exp->preg);
2087 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002088 }
2089
Willy Tarreau98d04852015-05-26 12:18:29 +02002090 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002091 expb = exp;
2092 exp = exp->next;
2093 free(expb);
2094 }
2095
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002096 /* build a list of unique uri_auths */
2097 if (!ua)
2098 ua = p->uri_auth;
2099 else {
2100 /* check if p->uri_auth is unique */
2101 for (uap = ua; uap; uap=uap->next)
2102 if (uap == p->uri_auth)
2103 break;
2104
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002105 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002106 /* add it, if it is */
2107 p->uri_auth->next = ua;
2108 ua = p->uri_auth;
2109 }
2110 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002111
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002112 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2113 LIST_DEL(&acl->list);
2114 prune_acl(acl);
2115 free(acl);
2116 }
2117
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002118 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2119 LIST_DEL(&srule->list);
2120 prune_acl_cond(srule->cond);
2121 free(srule->cond);
2122 free(srule);
2123 }
2124
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002125 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2126 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002127 if (rule->cond) {
2128 prune_acl_cond(rule->cond);
2129 free(rule->cond);
Thierry FOURNIER / OZON.IO4ed1c952016-11-24 23:57:54 +01002130 free(rule->file);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002131 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002132 free(rule);
2133 }
2134
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002135 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2136 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002137 if (rdr->cond) {
2138 prune_acl_cond(rdr->cond);
2139 free(rdr->cond);
2140 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002141 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002142 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2143 LIST_DEL(&lf->list);
2144 free(lf);
2145 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002146 free(rdr);
2147 }
2148
William Lallemand0f99e342011-10-12 17:50:54 +02002149 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2150 LIST_DEL(&log->list);
2151 free(log);
2152 }
2153
William Lallemand723b73a2012-02-08 16:37:49 +01002154 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2155 LIST_DEL(&lf->list);
2156 free(lf);
2157 }
2158
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002159 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2160 LIST_DEL(&lf->list);
2161 free(lf);
2162 }
2163
Simon Hormanac821422011-07-15 13:14:09 +09002164 deinit_tcp_rules(&p->tcp_req.inspect_rules);
2165 deinit_tcp_rules(&p->tcp_req.l4_rules);
2166
Simon Horman6fb82592011-07-15 13:14:11 +09002167 deinit_stick_rules(&p->storersp_rules);
2168 deinit_stick_rules(&p->sticking_rules);
2169
Willy Tarreaubaaee002006-06-26 02:48:02 +02002170 h = p->req_cap;
2171 while (h) {
2172 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002173 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002174 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002175 free(h);
2176 h = h_next;
2177 }/* end while(h) */
2178
2179 h = p->rsp_cap;
2180 while (h) {
2181 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002182 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002183 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002184 free(h);
2185 h = h_next;
2186 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002187
Willy Tarreaubaaee002006-06-26 02:48:02 +02002188 s = p->srv;
2189 while (s) {
2190 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002191
Willy Tarreau5b3a2022012-09-28 15:01:02 +02002192 if (s->check.task) {
2193 task_delete(s->check.task);
2194 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002195 }
Simon Hormand60d6912013-11-25 10:46:36 +09002196 if (s->agent.task) {
2197 task_delete(s->agent.task);
2198 task_free(s->agent.task);
2199 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002200
Willy Tarreau2e993902011-10-31 11:53:20 +01002201 if (s->warmup) {
2202 task_delete(s->warmup);
2203 task_free(s->warmup);
2204 }
2205
Willy Tarreaua534fea2008-08-03 12:19:50 +02002206 free(s->id);
2207 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002208 free(s->check.bi.area);
2209 free(s->check.bo.area);
2210 free(s->agent.bi.area);
2211 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002212 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002213 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002214 free((char*)s->conf.file);
Willy Tarreau17d45382016-12-22 21:16:08 +01002215
2216 if (s->use_ssl || s->check.use_ssl) {
2217 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2218 xprt_get(XPRT_SSL)->destroy_srv(s);
2219 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002220 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002221 free(s);
2222 s = s_next;
2223 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002224
Willy Tarreau4348fad2012-09-20 16:48:07 +02002225 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002226 /*
2227 * Zombie proxy, the listener just pretend to be up
2228 * because they still hold an opened fd.
2229 * Close it and give the listener its real state.
2230 */
2231 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2232 close(l->fd);
2233 l->state = LI_INIT;
2234 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002235 unbind_listener(l);
2236 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002237 LIST_DEL(&l->by_fe);
2238 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002239 free(l->name);
2240 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002241 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002242 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002243
Willy Tarreau4348fad2012-09-20 16:48:07 +02002244 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002245 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002246 if (bind_conf->xprt->destroy_bind_conf)
2247 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002248 free(bind_conf->file);
2249 free(bind_conf->arg);
2250 LIST_DEL(&bind_conf->by_fe);
2251 free(bind_conf);
2252 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002253
Christopher Fauletd7c91962015-04-30 11:48:27 +02002254 flt_deinit(p);
2255
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002256 free(p->desc);
2257 free(p->fwdfor_hdr_name);
2258
Willy Tarreauff011f22011-01-06 17:51:27 +01002259 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002260 free_http_res_rules(&p->http_res_rules);
Willy Tarreau1f89b182017-11-22 16:53:53 +01002261 task_free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002262
Willy Tarreaubafbe012017-11-24 17:34:44 +01002263 pool_destroy(p->req_cap_pool);
2264 pool_destroy(p->rsp_cap_pool);
2265 pool_destroy(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002266
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002267 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002268 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002269 HA_SPIN_DESTROY(&p0->lbprm.lock);
2270 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002271 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002272 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002273
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002274 while (ua) {
2275 uap = ua;
2276 ua = ua->next;
2277
Willy Tarreaua534fea2008-08-03 12:19:50 +02002278 free(uap->uri_prefix);
2279 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002280 free(uap->node);
2281 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002282
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002283 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002284 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002285
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002286 free(uap);
2287 }
2288
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002289 userlist_free(userlist);
2290
David Carlier834cb2e2015-09-25 12:02:25 +01002291 cfg_unregister_sections();
2292
Christopher Faulet0132d062017-07-26 15:33:35 +02002293 deinit_log_buffers();
Christopher Faulet748919a2017-07-26 14:59:46 +02002294 deinit_trash_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002295
Willy Tarreaudd815982007-10-16 12:25:14 +02002296 protocol_unbind_all();
2297
Willy Tarreau05554e62016-12-21 20:46:26 +01002298 list_for_each_entry(pdf, &post_deinit_list, list)
2299 pdf->fct();
2300
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002301 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002302 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002303 free(global.chroot); global.chroot = NULL;
2304 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002305 free(global.node); global.node = NULL;
2306 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002307 free(oldpids); oldpids = NULL;
Willy Tarreau1f89b182017-11-22 16:53:53 +01002308 task_free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002309
William Lallemand0f99e342011-10-12 17:50:54 +02002310 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2311 LIST_DEL(&log->list);
2312 free(log);
2313 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002314 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002315 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002316 LIST_DEL(&wl->list);
2317 free(wl);
2318 }
2319
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002320 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2321 if (bol->must_free)
2322 free((void *)bol->str);
2323 LIST_DEL(&bol->list);
2324 free(bol);
2325 }
2326
Christopher Fauletff2613e2016-11-09 11:36:17 +01002327 vars_prune(&global.vars, NULL, NULL);
2328
Christopher Fauletad405f12017-08-29 15:30:11 +02002329 deinit_buffer();
2330
Willy Tarreaubafbe012017-11-24 17:34:44 +01002331 pool_destroy(pool_head_stream);
2332 pool_destroy(pool_head_session);
2333 pool_destroy(pool_head_connection);
2334 pool_destroy(pool_head_connstream);
2335 pool_destroy(pool_head_requri);
2336 pool_destroy(pool_head_task);
2337 pool_destroy(pool_head_capture);
2338 pool_destroy(pool_head_pendconn);
2339 pool_destroy(pool_head_sig_handlers);
2340 pool_destroy(pool_head_hdr_idx);
2341 pool_destroy(pool_head_http_txn);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002342 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002343} /* end deinit() */
2344
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002345void mworker_pipe_handler(int fd)
2346{
2347 char c;
2348
2349 while (read(fd, &c, 1) == -1) {
2350 if (errno == EINTR)
2351 continue;
2352 if (errno == EAGAIN) {
2353 fd_cant_recv(fd);
2354 return;
2355 }
2356 break;
2357 }
2358
2359 deinit();
2360 exit(EXIT_FAILURE);
2361 return;
2362}
2363
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002364/* should only be called once per process */
2365void mworker_pipe_register()
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002366{
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002367 if (fdtab[mworker_pipe[0]].owner)
2368 /* already initialized */
2369 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002370
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002371 fcntl(mworker_pipe[0], F_SETFL, O_NONBLOCK);
Willy Tarreaua9786b62018-01-25 07:22:13 +01002372 fd_insert(mworker_pipe[0], mworker_pipe, mworker_pipe_handler, MAX_THREADS_MASK);
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002373 fd_want_recv(mworker_pipe[0]);
2374}
Christopher Fauletdc628a32017-10-19 11:59:44 +02002375
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002376static int sync_poll_loop()
Christopher Fauletdc628a32017-10-19 11:59:44 +02002377{
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002378 int stop = 0;
2379
Christopher Fauletdc628a32017-10-19 11:59:44 +02002380 if (THREAD_NO_SYNC())
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002381 return stop;
Christopher Fauletdc628a32017-10-19 11:59:44 +02002382
2383 THREAD_ENTER_SYNC();
2384
2385 if (!THREAD_NEED_SYNC())
2386 goto exit;
2387
2388 /* *** { */
2389 /* Put here all sync functions */
2390
Christopher Faulet5d42e092017-10-16 12:00:40 +02002391 servers_update_status(); /* Commit server status changes */
Christopher Fauletdc628a32017-10-19 11:59:44 +02002392
2393 /* *** } */
2394 exit:
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002395 stop = (jobs == 0); /* stop when there's nothing left to do */
Christopher Fauletdc628a32017-10-19 11:59:44 +02002396 THREAD_EXIT_SYNC();
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002397 return stop;
Christopher Fauletdc628a32017-10-19 11:59:44 +02002398}
2399
Willy Tarreau918ff602011-07-25 16:33:49 +02002400/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002401static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002402{
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002403 int next, exp;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002404
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002405 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002406 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002407 /* Process a few tasks */
2408 process_runnable_tasks();
2409
William Lallemand1aab50b2018-06-07 09:46:01 +02002410 /* check if we caught some signals and process them in the
2411 first thread */
2412 if (tid == 0)
2413 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002414
Willy Tarreau58b458d2008-06-29 22:40:23 +02002415 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002416 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002417
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002418 /* the first thread requests a synchronization to exit when
2419 * there is no active jobs anymore */
2420 if (tid == 0 && jobs == 0)
2421 THREAD_WANT_SYNC();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002422
Willy Tarreau10146c92015-04-13 20:44:19 +02002423 /* expire immediately if events are pending */
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002424 exp = now_ms;
Christopher Faulet32467fe2018-01-15 12:16:34 +01002425 if (fd_cache_mask & tid_bit)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002426 activity[tid].wake_cache++;
2427 else if (active_tasks_mask & tid_bit)
2428 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002429 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002430 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002431 else {
2432 HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2433 __ha_barrier_store();
2434 if (active_tasks_mask & tid_bit) {
2435 activity[tid].wake_tasks++;
2436 HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
2437 } else
2438 exp = next;
2439 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002440
Willy Tarreau58b458d2008-06-29 22:40:23 +02002441 /* The poller will ensure it returns around <next> */
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002442 cur_poller.poll(&cur_poller, exp);
Olivier Houchard79321b92018-07-26 17:55:11 +02002443 if (sleeping_thread_mask & tid_bit)
2444 HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002445 fd_process_cached_events();
Emeric Brun64cc49c2017-10-03 14:46:45 +02002446
Christopher Fauletdc628a32017-10-19 11:59:44 +02002447
2448 /* Synchronize all polling loops */
Christopher Fauletd8fd2af2018-06-20 16:22:03 +02002449 if (sync_poll_loop())
2450 break;
2451
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002452 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002453 }
2454}
2455
Christopher Faulet1d17c102017-08-29 15:38:48 +02002456static void *run_thread_poll_loop(void *data)
2457{
2458 struct per_thread_init_fct *ptif;
2459 struct per_thread_deinit_fct *ptdf;
Christopher Fauletda18b9d2018-01-25 16:10:16 +01002460 __decl_hathreads(static HA_SPINLOCK_T start_lock);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002461
2462 tid = *((unsigned int *)data);
2463 tid_bit = (1UL << tid);
2464 tv_update_date(-1,-1);
2465
2466 list_for_each_entry(ptif, &per_thread_init_list, list) {
2467 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002468 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002469 exit(1);
2470 }
2471 }
2472
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002473 if (global.mode & MODE_MWORKER) {
2474 HA_SPIN_LOCK(START_LOCK, &start_lock);
2475 mworker_pipe_register();
2476 HA_SPIN_UNLOCK(START_LOCK, &start_lock);
2477 }
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002478
2479 protocol_enable_all();
Christopher Fauletdc628a32017-10-19 11:59:44 +02002480 THREAD_SYNC_ENABLE();
Christopher Faulet1d17c102017-08-29 15:38:48 +02002481 run_poll_loop();
2482
2483 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2484 ptdf->fct();
2485
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002486#ifdef USE_THREAD
William Lallemand091d8272018-06-24 09:37:03 +02002487 HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002488 if (tid > 0)
2489 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002490#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002491 return NULL;
2492}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002493
Willy Tarreaue9b26022011-08-01 20:57:55 +02002494/* This is the global management task for listeners. It enables listeners waiting
2495 * for global resources when there are enough free resource, or at least once in
2496 * a while. It is designed to be called as a task.
2497 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002498static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002499{
2500 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002501 /* queue is empty, nothing to do */
2502 if (LIST_ISEMPTY(&global_listener_queue))
2503 goto out;
2504
2505 /* If there are still too many concurrent connections, let's wait for
2506 * some of them to go away. We don't need to re-arm the timer because
2507 * each of them will scan the queue anyway.
2508 */
2509 if (unlikely(actconn >= global.maxconn))
2510 goto out;
2511
2512 /* We should periodically try to enable listeners waiting for a global
2513 * resource here, because it is possible, though very unlikely, that
2514 * they have been blocked by a temporary lack of global resource such
2515 * as a file descriptor or memory and that the temporary condition has
2516 * disappeared.
2517 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002518 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002519
2520 out:
2521 t->expire = next;
2522 task_queue(t);
2523 return t;
2524}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002525
Willy Tarreaubaaee002006-06-26 02:48:02 +02002526int main(int argc, char **argv)
2527{
2528 int err, retry;
2529 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002530 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002531 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002532
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002533 setvbuf(stdout, NULL, _IONBF, 0);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002534 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002535 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2536 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2537 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002538 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002539
Willy Tarreaue437c442010-03-17 18:02:46 +01002540 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2541 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2542 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002543 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002544 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002545
Willy Tarreaudc23a922011-02-16 11:10:36 +01002546 /* ulimits */
2547 if (!global.rlimit_nofile)
2548 global.rlimit_nofile = global.maxsock;
2549
2550 if (global.rlimit_nofile) {
2551 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
2552 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002553 /* try to set it to the max possible at least */
2554 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002555 limit.rlim_cur = limit.rlim_max;
2556 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2557 getrlimit(RLIMIT_NOFILE, &limit);
2558
Christopher Faulet767a84b2017-11-24 16:50:31 +01002559 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 +02002560 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002561 }
2562 }
2563
2564 if (global.rlimit_memmax) {
2565 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002566 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002567#ifdef RLIMIT_AS
2568 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002569 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2570 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002571 }
2572#else
2573 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002574 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2575 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002576 }
2577#endif
2578 }
2579
Olivier Houchardf73629d2017-04-05 22:33:04 +02002580 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002581 if (strcmp("/dev/null", old_unixsocket) != 0) {
2582 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002583 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002584 if (!(global.mode & MODE_MWORKER))
2585 exit(1);
2586 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002587 }
2588 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002589 get_cur_unixsocket();
2590
Willy Tarreaubaaee002006-06-26 02:48:02 +02002591 /* We will loop at most 100 times with 10 ms delay each time.
2592 * That's at most 1 second. We only send a signal to old pids
2593 * if we cannot grab at least one port.
2594 */
2595 retry = MAX_START_RETRIES;
2596 err = ERR_NONE;
2597 while (retry >= 0) {
2598 struct timeval w;
2599 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002600 /* exit the loop on no error or fatal error */
2601 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002602 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002603 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002604 break;
2605
2606 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2607 * listening sockets. So on those platforms, it would be wiser to
2608 * simply send SIGUSR1, which will not be undoable.
2609 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002610 if (tell_old_pids(SIGTTOU) == 0) {
2611 /* no need to wait if we can't contact old pids */
2612 retry = 0;
2613 continue;
2614 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002615 /* give some time to old processes to stop listening */
2616 w.tv_sec = 0;
2617 w.tv_usec = 10*1000;
2618 select(0, NULL, NULL, NULL, &w);
2619 retry--;
2620 }
2621
2622 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002623 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002624 if (retry != MAX_START_RETRIES && nb_oldpids) {
2625 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002626 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002627 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002628 exit(1);
2629 }
2630
2631 if (listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002632 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002633 /* Note: we don't have to send anything to the old pids because we
2634 * never stopped them. */
2635 exit(1);
2636 }
2637
Emeric Bruncf20bf12010-10-22 16:06:11 +02002638 err = protocol_bind_all(errmsg, sizeof(errmsg));
2639 if ((err & ~ERR_WARN) != ERR_NONE) {
2640 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002641 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002642
Christopher Faulet767a84b2017-11-24 16:50:31 +01002643 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002644 protocol_unbind_all(); /* cleanup everything we can */
2645 if (nb_oldpids)
2646 tell_old_pids(SIGTTIN);
2647 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002648 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002649 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002650 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002651 /* Ok, all listener should now be bound, close any leftover sockets
2652 * the previous process gave us, we don't need them anymore
2653 */
2654 while (xfer_sock_list != NULL) {
2655 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2656 close(xfer_sock_list->fd);
2657 free(xfer_sock_list->iface);
2658 free(xfer_sock_list->namespace);
2659 free(xfer_sock_list);
2660 xfer_sock_list = tmpxfer;
2661 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002662
Willy Tarreaubaaee002006-06-26 02:48:02 +02002663 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002664 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2665 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002666
Willy Tarreaubaaee002006-06-26 02:48:02 +02002667 /* MODE_QUIET can inhibit alerts and warnings below this line */
2668
PiBa-NL149a81a2017-12-25 21:03:31 +01002669 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2670 /* either stdin/out/err are already closed or should stay as they are. */
2671 if ((global.mode & MODE_DAEMON)) {
2672 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2673 global.mode &= ~MODE_VERBOSE;
2674 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2675 }
2676 } else {
2677 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2678 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002679 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002680 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002681 }
2682
2683 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002684 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002685 unlink(global.pidfile);
2686 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2687 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002688 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002689 if (nb_oldpids)
2690 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002691 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002692 exit(1);
2693 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002694 }
2695
Willy Tarreaub38651a2007-03-24 17:24:39 +01002696 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002697 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2698 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002699 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002700 exit(1);
2701 }
2702
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002703 /* If the user is not root, we'll still let him try the configuration
2704 * but we inform him that unexpected behaviour may occur.
2705 */
2706 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002707 ha_warning("[%s.main()] Some options which require full privileges"
2708 " might not work well.\n"
2709 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002710
William Lallemand095ba4c2017-06-01 17:38:50 +02002711 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2712
2713 /* chroot if needed */
2714 if (global.chroot != NULL) {
2715 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002716 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002717 if (nb_oldpids)
2718 tell_old_pids(SIGTTIN);
2719 protocol_unbind_all();
2720 exit(1);
2721 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002722 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002723 }
2724
Willy Tarreaubaaee002006-06-26 02:48:02 +02002725 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02002726 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002727
William Lallemand8a361b52017-06-20 11:20:33 +02002728 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2729 nb_oldpids = 0;
2730 free(oldpids);
2731 oldpids = NULL;
2732 }
2733
2734
Willy Tarreaubaaee002006-06-26 02:48:02 +02002735 /* Note that any error at this stage will be fatal because we will not
2736 * be able to restart the old pids.
2737 */
2738
William Lallemand095ba4c2017-06-01 17:38:50 +02002739 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2740 /* setgid / setuid */
2741 if (global.gid) {
2742 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01002743 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2744 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002745
2746 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002747 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002748 protocol_unbind_all();
2749 exit(1);
2750 }
2751 }
Michael Schererab012dd2013-01-12 18:35:19 +01002752
William Lallemand095ba4c2017-06-01 17:38:50 +02002753 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002754 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002755 protocol_unbind_all();
2756 exit(1);
2757 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002758 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002759 /* check ulimits */
2760 limit.rlim_cur = limit.rlim_max = 0;
2761 getrlimit(RLIMIT_NOFILE, &limit);
2762 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002763 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",
2764 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002765 }
2766
William Lallemand095ba4c2017-06-01 17:38:50 +02002767 if (global.mode & (MODE_DAEMON | MODE_MWORKER)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002768 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002769 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002770 int ret = 0;
2771 int proc;
William Lallemande1340412017-12-28 16:09:36 +01002772 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002773
William Lallemand73b85e72017-06-01 17:38:51 +02002774 children = calloc(global.nbproc, sizeof(int));
William Lallemand095ba4c2017-06-01 17:38:50 +02002775 /*
2776 * if daemon + mworker: must fork here to let a master
2777 * process live in background before forking children
2778 */
William Lallemand73b85e72017-06-01 17:38:51 +02002779
2780 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2781 && (global.mode & MODE_MWORKER)
2782 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002783 ret = fork();
2784 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002785 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002786 protocol_unbind_all();
2787 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02002788 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02002789 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02002790 } else /* change the process group ID in the child (master process) */
2791 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02002792 }
William Lallemande20b6a62017-06-01 17:38:55 +02002793
2794 if (global.mode & MODE_MWORKER) {
2795 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2796 char *msg = NULL;
2797 /* master pipe to ensure the master is still alive */
2798 ret = pipe(mworker_pipe);
2799 if (ret < 0) {
PiBa-NL4763ffd2017-11-28 23:22:14 +01002800 ha_alert("[%s.main()] Cannot create master pipe.\n", argv[0]);
2801 exit(EXIT_FAILURE);
William Lallemande20b6a62017-06-01 17:38:55 +02002802 } else {
2803 memprintf(&msg, "%d", mworker_pipe[0]);
2804 setenv("HAPROXY_MWORKER_PIPE_RD", msg, 1);
2805 memprintf(&msg, "%d", mworker_pipe[1]);
2806 setenv("HAPROXY_MWORKER_PIPE_WR", msg, 1);
2807 free(msg);
2808 }
2809 } else {
PiBa-NL4763ffd2017-11-28 23:22:14 +01002810 char* rd = getenv("HAPROXY_MWORKER_PIPE_RD");
2811 char* wr = getenv("HAPROXY_MWORKER_PIPE_WR");
2812 if (!rd || !wr) {
2813 ha_alert("[%s.main()] Cannot get master pipe FDs.\n", argv[0]);
2814 atexit_flag = 0;// dont reexecute master process
2815 exit(EXIT_FAILURE);
William Lallemande20b6a62017-06-01 17:38:55 +02002816 }
PiBa-NL4763ffd2017-11-28 23:22:14 +01002817 mworker_pipe[0] = atoi(rd);
2818 mworker_pipe[1] = atoi(wr);
William Lallemande20b6a62017-06-01 17:38:55 +02002819 }
2820 }
2821
William Lallemanddeed7802017-11-06 11:00:04 +01002822 /* if in master-worker mode, write the PID of the father */
2823 if (global.mode & MODE_MWORKER) {
2824 char pidstr[100];
2825 snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01002826 if (pidfd >= 0)
2827 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01002828 }
2829
Willy Tarreaubaaee002006-06-26 02:48:02 +02002830 /* the father launches the required number of processes */
2831 for (proc = 0; proc < global.nbproc; proc++) {
2832 ret = fork();
2833 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002834 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002835 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02002836 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002837 }
2838 else if (ret == 0) /* child breaks here */
2839 break;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01002840 children[proc] = ret;
William Lallemand92159b22017-11-06 11:16:12 +01002841 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
Willy Tarreau269ab312012-09-05 08:02:48 +02002842 char pidstr[100];
2843 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002844 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002845 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01002846 relative_pid++; /* each child will get a different one */
Willy Tarreau387bd4f2017-11-10 19:08:14 +01002847 pid_bit <<= 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002848 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002849
2850#ifdef USE_CPU_AFFINITY
2851 if (proc < global.nbproc && /* child */
Willy Tarreaue7597492015-04-20 11:36:57 +02002852 proc < LONGBITS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01002853 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002854#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02002855 {
2856 cpuset_t cpuset;
2857 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01002858 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02002859
2860 CPU_ZERO(&cpuset);
2861 while ((i = ffsl(cpu_map)) > 0) {
2862 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01002863 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02002864 }
2865 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
2866 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002867#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01002868 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002869#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002870#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02002871 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02002872 if (pidfd >= 0) {
2873 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
2874 close(pidfd);
2875 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02002876
2877 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02002878 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002879
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002880 if (proc == global.nbproc) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002881 if (global.mode & MODE_MWORKER) {
William Lallemand75ea0a02017-11-15 19:02:58 +01002882 mworker_cleanlisteners();
2883 deinit_pollers();
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002884
2885 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2886 (global.mode & MODE_DAEMON)) {
2887 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01002888 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
2889 stdio_quiet(-1);
2890
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002891 global.mode &= ~MODE_VERBOSE;
2892 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002893 }
2894
William Lallemand73b85e72017-06-01 17:38:51 +02002895 mworker_wait();
William Lallemand1499b9b2017-06-07 15:04:47 +02002896 /* should never get there */
2897 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002898 }
William Lallemandcf4e4962017-06-08 19:05:48 +02002899#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00002900 ssl_free_dh();
2901#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02002902 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002903 }
2904
William Lallemandcb11fd22017-06-01 17:38:52 +02002905 /* child must never use the atexit function */
2906 atexit_flag = 0;
2907
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002908 /* close the write end of the master pipe in the children */
2909 if (global.mode & MODE_MWORKER)
2910 close(mworker_pipe[1]);
2911
William Lallemande1340412017-12-28 16:09:36 +01002912 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
2913 devnullfd = open("/dev/null", O_RDWR, 0);
2914 if (devnullfd < 0) {
2915 ha_alert("Cannot open /dev/null\n");
2916 exit(EXIT_FAILURE);
2917 }
2918 }
2919
William Lallemand095ba4c2017-06-01 17:38:50 +02002920 /* Must chroot and setgid/setuid in the children */
2921 /* chroot if needed */
2922 if (global.chroot != NULL) {
2923 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002924 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002925 if (nb_oldpids)
2926 tell_old_pids(SIGTTIN);
2927 protocol_unbind_all();
2928 exit(1);
2929 }
2930 }
2931
2932 free(global.chroot);
2933 global.chroot = NULL;
2934
2935 /* setgid / setuid */
2936 if (global.gid) {
2937 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01002938 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2939 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002940
2941 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002942 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002943 protocol_unbind_all();
2944 exit(1);
2945 }
2946 }
2947
2948 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002949 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002950 protocol_unbind_all();
2951 exit(1);
2952 }
2953
William Lallemand7f80eb22017-05-26 18:19:55 +02002954 /* pass through every cli socket, and check if it's bound to
2955 * the current process and if it exposes listeners sockets.
2956 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
2957 * */
2958
2959 if (global.stats_fe) {
2960 struct bind_conf *bind_conf;
2961
2962 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
2963 if (bind_conf->level & ACCESS_FD_LISTENERS) {
2964 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
2965 global.tune.options |= GTUNE_SOCKET_TRANSFER;
2966 break;
2967 }
2968 }
2969 }
2970 }
2971
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002972 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002973 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002974 while (px != NULL) {
2975 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002976 if (!(px->bind_proc & (1UL << proc))) {
2977 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
2978 zombify_proxy(px);
2979 else
2980 stop_proxy(px);
2981 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002982 }
2983 px = px->next;
2984 }
2985
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002986 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002987 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002988 if (!curpeers->peers_fe)
2989 continue;
2990
2991 if (curpeers->peers_fe->bind_proc & (1UL << proc))
2992 continue;
2993
2994 stop_proxy(curpeers->peers_fe);
2995 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02002996 signal_unregister_handler(curpeers->sighandler);
2997 task_delete(curpeers->sync_task);
2998 task_free(curpeers->sync_task);
2999 curpeers->sync_task = NULL;
3000 task_free(curpeers->peers_fe->task);
3001 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003002 curpeers->peers_fe = NULL;
3003 }
3004
Willy Tarreaubaaee002006-06-26 02:48:02 +02003005 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
3006 * that we can detach from the TTY. We MUST NOT do it in other cases since
3007 * it would have already be done, and 0-2 would have been affected to listening
3008 * sockets
3009 */
Willy Tarreau106cb762008-11-16 07:40:34 +01003010 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003011 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003012 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003013 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003014 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3015 }
3016 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003017 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3018 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003019 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003020 }
3021
Christopher Faulete3a5e352017-10-24 13:53:54 +02003022 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003023 /*
3024 * That's it : the central polling loop. Run until we stop.
3025 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003026#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003027 {
Christopher Faulet1d17c102017-08-29 15:38:48 +02003028 unsigned int *tids = calloc(global.nbthread, sizeof(unsigned int));
3029 pthread_t *threads = calloc(global.nbthread, sizeof(pthread_t));
3030 int i;
William Lallemand1aab50b2018-06-07 09:46:01 +02003031 sigset_t blocked_sig, old_sig;
Christopher Faulet1d17c102017-08-29 15:38:48 +02003032
Christopher Fauletd7bddda2017-10-31 17:30:12 +01003033 THREAD_SYNC_INIT((1UL << global.nbthread) - 1);
3034
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003035 /* Init tids array */
3036 for (i = 0; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003037 tids[i] = i;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003038
William Lallemand1aab50b2018-06-07 09:46:01 +02003039 /* ensure the signals will be blocked in every thread */
3040 sigfillset(&blocked_sig);
3041 sigdelset(&blocked_sig, SIGPROF);
3042 sigdelset(&blocked_sig, SIGBUS);
3043 sigdelset(&blocked_sig, SIGFPE);
3044 sigdelset(&blocked_sig, SIGILL);
3045 sigdelset(&blocked_sig, SIGSEGV);
3046 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3047
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003048 /* Create nbthread-1 thread. The first thread is the current process */
3049 threads[0] = pthread_self();
3050 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003051 pthread_create(&threads[i], NULL, &run_thread_poll_loop, &tids[i]);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003052
Christopher Faulet62519022017-10-16 15:49:32 +02003053#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003054 /* Now the CPU affinity for all threads */
3055 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003056 if (global.cpu_map.proc[relative_pid-1])
3057 global.cpu_map.thread[relative_pid-1][i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003058
Willy Tarreau421f02e2018-01-20 18:19:22 +01003059 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Olivier Houchard829aa242017-12-01 18:19:43 +01003060 global.cpu_map.thread[relative_pid-1][i]) {/* only do this if the thread has a THREAD map */
3061#if defined(__FreeBSD__) || defined(__NetBSD__)
3062 cpuset_t cpuset;
3063#else
3064 cpu_set_t cpuset;
3065#endif
3066 int j;
3067 unsigned long cpu_map = global.cpu_map.thread[relative_pid-1][i];
3068
3069 CPU_ZERO(&cpuset);
3070
3071 while ((j = ffsl(cpu_map)) > 0) {
3072 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003073 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003074 }
Christopher Faulet62519022017-10-16 15:49:32 +02003075 pthread_setaffinity_np(threads[i],
Olivier Houchard829aa242017-12-01 18:19:43 +01003076 sizeof(cpuset), &cpuset);
3077 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003078 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003079#endif /* !USE_CPU_AFFINITY */
3080
William Lallemand1aab50b2018-06-07 09:46:01 +02003081 /* when multithreading we need to let only the thread 0 handle the signals */
3082 pthread_sigmask(SIG_SETMASK, &old_sig, NULL);
3083
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003084 /* Finally, start the poll loop for the first thread */
3085 run_thread_poll_loop(&tids[0]);
3086
3087 /* Wait the end of other threads */
3088 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003089 pthread_join(threads[i], NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003090
Christopher Faulet1d17c102017-08-29 15:38:48 +02003091 free(tids);
3092 free(threads);
3093
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003094#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3095 show_lock_stats();
3096#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003097 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003098#else /* ! USE_THREAD */
Christopher Fauletd4604ad2017-05-29 10:40:41 +02003099
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003100 run_thread_poll_loop((int []){0});
Christopher Faulet62519022017-10-16 15:49:32 +02003101
Christopher Faulet62519022017-10-16 15:49:32 +02003102#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003103
3104 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003105 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003106
Willy Tarreaubaaee002006-06-26 02:48:02 +02003107 exit(0);
3108}
3109
3110
3111/*
3112 * Local variables:
3113 * c-indent-level: 8
3114 * c-basic-offset: 8
3115 * End:
3116 */