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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>
58#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010059#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020060
61#ifdef DEBUG_FULL
62#include <assert.h>
63#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010064#if defined(USE_SYSTEMD)
65#include <systemd/sd-daemon.h>
66#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020067
Willy Tarreau2dd0d472006-06-29 17:53:05 +020068#include <common/base64.h>
69#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020070#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020071#include <common/compat.h>
72#include <common/config.h>
73#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010074#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020075#include <common/memory.h>
76#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010077#include <common/namespace.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020078#include <common/regex.h>
79#include <common/standard.h>
80#include <common/time.h>
81#include <common/uri_auth.h>
82#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020083#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020084
85#include <types/capture.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020086#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020087#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090088#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020089#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020090
Willy Tarreau0fc45a72007-06-17 00:36:03 +020091#include <proto/acl.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +020092#include <proto/applet.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
126/* global options */
127struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100128 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100129 .nbproc = 1,
Christopher Fauletbe0faa22017-08-29 15:37:10 +0200130 .nbthread = 1,
William Lallemand5f232402012-04-05 18:02:55 +0200131 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200132 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100133 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100134 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100135 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200136 .unix_bind = {
137 .ux = {
138 .uid = -1,
139 .gid = -1,
140 .mode = 0,
141 }
142 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200143 .tune = {
144 .bufsize = BUFSIZE,
Willy Tarreau27097842015-09-28 13:53:23 +0200145 .maxrewrite = -1,
Willy Tarreau43961d52010-10-04 20:39:20 +0200146 .chksize = BUFSIZE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100147 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200148 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200149#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100150 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200151#endif
William Lallemandf3747832012-11-09 12:33:10 +0100152 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100153#ifdef DEFAULT_IDLE_TIMER
154 .idle_timer = DEFAULT_IDLE_TIMER,
155#else
156 .idle_timer = 1000, /* 1 second */
157#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200158 },
Emeric Brun76d88952012-10-05 15:47:31 +0200159#ifdef USE_OPENSSL
160#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200161 .maxsslconn = DEFAULT_MAXSSLCONN,
162#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200163#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200164 /* others NULL OK */
165};
166
167/*********************************************************************/
168
169int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100170int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200171int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200172
173/* Here we store informations about the pids of the processes we may pause
174 * or kill. We will send them a signal every 10 ms until we can bind to all
175 * our ports. With 200 retries, that's about 2 seconds.
176 */
177#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200178static int *oldpids = NULL;
179static int oldpids_sig; /* use USR1 or TERM */
180
Olivier Houchardf73629d2017-04-05 22:33:04 +0200181/* Path to the unix socket we use to retrieve listener sockets from the old process */
182static const char *old_unixsocket;
183
William Lallemand85b0bd92017-06-01 17:38:53 +0200184static char *cur_unixsocket = NULL;
185
William Lallemandcb11fd22017-06-01 17:38:52 +0200186int atexit_flag = 0;
187
Willy Tarreaubb545b42010-08-25 12:58:59 +0200188int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200189const int zero = 0;
190const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200191const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200192
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100193char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200194char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200195
Willy Tarreau89efaed2013-12-13 15:14:55 +0100196/* used from everywhere just to drain results we don't want to read and which
197 * recent versions of gcc increasingly and annoyingly complain about.
198 */
199int shut_your_big_mouth_gcc_int = 0;
200
William Lallemand73b85e72017-06-01 17:38:51 +0200201int *children = NULL; /* store PIDs of children in master workers mode */
202
203static volatile sig_atomic_t caught_signal = 0;
204static char **next_argv = NULL;
205
William Lallemande20b6a62017-06-01 17:38:55 +0200206int mworker_pipe[2];
207
Willy Tarreau08ceb102011-07-24 22:58:00 +0200208/* list of the temporarily limited listeners because of lack of resource */
209struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200210struct task *global_listener_queue_task;
211static struct task *manage_global_listener_queue(struct task *t);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200212
Willy Tarreauff055502014-04-28 22:27:06 +0200213/* bitfield of a few warnings to emit just once (WARN_*) */
214unsigned int warned = 0;
215
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100216
217/* These are strings to be reported in the output of "haproxy -vv". They may
218 * either be constants (in which case must_free must be zero) or dynamically
219 * allocated strings to pass to free() on exit, and in this case must_free
220 * must be non-zero.
221 */
222struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
223struct build_opts_str {
224 struct list list;
225 const char *str;
226 int must_free;
227};
228
Willy Tarreaue6945732016-12-21 19:57:00 +0100229/* These functions are called just after the point where the program exits
230 * after a config validity check, so they are generally suited for resource
231 * allocation and slow initializations that should be skipped during basic
232 * config checks. The functions must return 0 on success, or a combination
233 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
234 * and immediate exit, so the function must have emitted any useful error.
235 */
236struct list post_check_list = LIST_HEAD_INIT(post_check_list);
237struct post_check_fct {
238 struct list list;
239 int (*fct)();
240};
241
Willy Tarreau05554e62016-12-21 20:46:26 +0100242/* These functions are called when freeing the global sections at the end
243 * of deinit, after everything is stopped. They don't return anything, and
244 * they work in best effort mode as their sole goal is to make valgrind
245 * mostly happy.
246 */
247struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
248struct post_deinit_fct {
249 struct list list;
250 void (*fct)();
251};
252
Christopher Faulet415f6112017-07-25 16:52:58 +0200253/* These functions are called for each thread just after the thread creation
254 * and before running the scheduler. They should be used to do per-thread
255 * initializations. They must return 0 if an error occurred. */
256struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
257struct per_thread_init_fct {
258 struct list list;
259 int (*fct)();
260};
261
262/* These functions are called for each thread just after the scheduler loop and
263 * before exiting the thread. They don't return anything and, as for post-deinit
264 * functions, they work in best effort mode as their sole goal is to make
265 * valgrind mostly happy. */
266struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
267struct per_thread_deinit_fct {
268 struct list list;
269 void (*fct)();
270};
271
Willy Tarreaubaaee002006-06-26 02:48:02 +0200272/*********************************************************************/
273/* general purpose functions ***************************************/
274/*********************************************************************/
275
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100276/* used to register some build option strings at boot. Set must_free to
277 * non-zero if the string must be freed upon exit.
278 */
279void hap_register_build_opts(const char *str, int must_free)
280{
281 struct build_opts_str *b;
282
283 b = calloc(1, sizeof(*b));
284 if (!b) {
285 fprintf(stderr, "out of memory\n");
286 exit(1);
287 }
288 b->str = str;
289 b->must_free = must_free;
290 LIST_ADDQ(&build_opts_list, &b->list);
291}
292
Willy Tarreaue6945732016-12-21 19:57:00 +0100293/* used to register some initialization functions to call after the checks. */
294void hap_register_post_check(int (*fct)())
295{
296 struct post_check_fct *b;
297
298 b = calloc(1, sizeof(*b));
299 if (!b) {
300 fprintf(stderr, "out of memory\n");
301 exit(1);
302 }
303 b->fct = fct;
304 LIST_ADDQ(&post_check_list, &b->list);
305}
306
Willy Tarreau05554e62016-12-21 20:46:26 +0100307/* used to register some de-initialization functions to call after everything
308 * has stopped.
309 */
310void hap_register_post_deinit(void (*fct)())
311{
312 struct post_deinit_fct *b;
313
314 b = calloc(1, sizeof(*b));
315 if (!b) {
316 fprintf(stderr, "out of memory\n");
317 exit(1);
318 }
319 b->fct = fct;
320 LIST_ADDQ(&post_deinit_list, &b->list);
321}
322
Christopher Faulet415f6112017-07-25 16:52:58 +0200323/* used to register some initialization functions to call for each thread. */
324void hap_register_per_thread_init(int (*fct)())
325{
326 struct per_thread_init_fct *b;
327
328 b = calloc(1, sizeof(*b));
329 if (!b) {
330 fprintf(stderr, "out of memory\n");
331 exit(1);
332 }
333 b->fct = fct;
334 LIST_ADDQ(&per_thread_init_list, &b->list);
335}
336
337/* used to register some de-initialization functions to call for each thread. */
338void hap_register_per_thread_deinit(void (*fct)())
339{
340 struct per_thread_deinit_fct *b;
341
342 b = calloc(1, sizeof(*b));
343 if (!b) {
344 fprintf(stderr, "out of memory\n");
345 exit(1);
346 }
347 b->fct = fct;
348 LIST_ADDQ(&per_thread_deinit_list, &b->list);
349}
350
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100351static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200352{
353 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau7b677262017-04-03 09:27:49 +0200354 printf("Copyright 2000-2017 Willy Tarreau <willy@haproxy.org>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200355}
356
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100357static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100358{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100359 struct build_opts_str *item;
360
Willy Tarreau7b066db2007-12-02 11:28:59 +0100361 printf("Build options :"
362#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100363 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100364#endif
365#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100366 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100367#endif
368#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100369 "\n CC = " BUILD_CC
370#endif
371#ifdef BUILD_CFLAGS
372 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100373#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100374#ifdef BUILD_OPTIONS
375 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100376#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200377 "\n\nDefault settings :"
378 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
379 "\n\n",
380 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200381
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100382 list_for_each_entry(item, &build_opts_list, list) {
383 puts(item->str);
384 }
385
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100386 putchar('\n');
387
Willy Tarreaube5b6852009-10-03 18:57:08 +0200388 list_pollers(stdout);
389 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100390 list_filters(stdout);
391 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100392}
393
Willy Tarreaubaaee002006-06-26 02:48:02 +0200394/*
395 * This function prints the command line usage and exits
396 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100397static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200398{
399 display_version();
400 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200401 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200402 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200403 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100404 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200405 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200406 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200407 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200408 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200409 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100410#if defined(USE_SYSTEMD)
411 " -Ws master-worker mode with systemd notify support.\n"
412#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200413 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200414 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200415 " -n sets the maximum total # of connections (%d)\n"
416 " -m limits the usable amount of memory (in MB)\n"
417 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200418 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200419 " -p writes pids of all children to this file\n"
420#if defined(ENABLE_EPOLL)
421 " -de disables epoll() usage even when available\n"
422#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200423#if defined(ENABLE_KQUEUE)
424 " -dk disables kqueue() usage even when available\n"
425#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200426#if defined(ENABLE_POLL)
427 " -dp disables poll() usage even when available\n"
428#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200429#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100430 " -dS disables splice usage (broken on old kernels)\n"
431#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200432#if defined(USE_GETADDRINFO)
433 " -dG disables getaddrinfo() usage\n"
434#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000435#if defined(SO_REUSEPORT)
436 " -dR disables SO_REUSEPORT usage\n"
437#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100438 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100439 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200440 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200441 " -x <unix_socket> get listening sockets from a unix socket\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200442 "\n",
443 name, DEFAULT_MAXCONN, cfg_maxpconn);
444 exit(1);
445}
446
447
448
449/*********************************************************************/
450/* more specific functions ***************************************/
451/*********************************************************************/
452
William Lallemand73b85e72017-06-01 17:38:51 +0200453/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
454 * pids the signal was correctly delivered to.
455 */
456static int tell_old_pids(int sig)
457{
458 int p;
459 int ret = 0;
460 for (p = 0; p < nb_oldpids; p++)
461 if (kill(oldpids[p], sig) == 0)
462 ret++;
463 return ret;
464}
465
466/* return 1 if a pid is a current child otherwise 0 */
467
468int current_child(int pid)
469{
470 int i;
471
472 for (i = 0; i < global.nbproc; i++) {
473 if (children[i] == pid)
474 return 1;
475 }
476 return 0;
477}
478
479static void mworker_signalhandler(int signum)
480{
481 caught_signal = signum;
482}
483
484static void mworker_register_signals()
485{
486 struct sigaction sa;
487 /* Here we are not using the haproxy async way
488 for signals because it does not exists in
489 the master */
490 memset(&sa, 0, sizeof(struct sigaction));
491 sa.sa_handler = &mworker_signalhandler;
492 sigaction(SIGHUP, &sa, NULL);
493 sigaction(SIGUSR1, &sa, NULL);
494 sigaction(SIGUSR2, &sa, NULL);
495 sigaction(SIGINT, &sa, NULL);
496 sigaction(SIGTERM, &sa, NULL);
497}
498
499static void mworker_block_signals()
500{
501 sigset_t set;
502
503 sigemptyset(&set);
504 sigaddset(&set, SIGUSR1);
505 sigaddset(&set, SIGUSR2);
506 sigaddset(&set, SIGHUP);
507 sigaddset(&set, SIGINT);
508 sigaddset(&set, SIGTERM);
509 sigprocmask(SIG_SETMASK, &set, NULL);
510}
511
512static void mworker_unblock_signals()
513{
514 sigset_t set;
515
516 sigemptyset(&set);
517 sigaddset(&set, SIGUSR1);
518 sigaddset(&set, SIGUSR2);
519 sigaddset(&set, SIGHUP);
520 sigaddset(&set, SIGINT);
521 sigaddset(&set, SIGTERM);
522 sigprocmask(SIG_UNBLOCK, &set, NULL);
523}
524
525static void mworker_unregister_signals()
526{
527 signal(SIGINT, SIG_DFL);
528 signal(SIGTERM, SIG_DFL);
529 signal(SIGHUP, SIG_IGN);
530 signal(SIGUSR1, SIG_IGN);
531 signal(SIGUSR2, SIG_IGN);
532}
533
534/*
535 * Send signal to every known children.
536 */
537
538static void mworker_kill(int sig)
539{
540 int i;
541
542 tell_old_pids(sig);
543 if (children) {
544 for (i = 0; i < global.nbproc; i++)
545 kill(children[i], sig);
546 }
547}
548
Willy Tarreaubaaee002006-06-26 02:48:02 +0200549/*
William Lallemand75ea0a02017-11-15 19:02:58 +0100550 * Upon a reload, the master worker needs to close all listeners FDs but the mworker_pipe
551 * fd, and the FD provided by fd@
552 */
553static void mworker_cleanlisteners()
554{
555 struct listener *l, *l_next;
556 struct proxy *curproxy;
557
558 for (curproxy = proxy; curproxy; curproxy = curproxy->next) {
559
560 list_for_each_entry_safe(l, l_next, &curproxy->conf.listeners, by_fe) {
561 /* does not close if the FD is inherited with fd@
562 * from the parent process */
563 if (!(l->options & LI_O_INHERITED)) {
564 close(l->fd);
565 LIST_DEL(&l->by_fe);
566 LIST_DEL(&l->by_bind);
567 free(l->name);
568 free(l->counters);
569 free(l);
570 }
571 }
572 }
573}
574
575
576/*
William Lallemand73b85e72017-06-01 17:38:51 +0200577 * remove a pid forom the olpid array and decrease nb_oldpids
578 * return 1 pid was found otherwise return 0
579 */
580
581int delete_oldpid(int pid)
582{
583 int i;
584
585 for (i = 0; i < nb_oldpids; i++) {
586 if (oldpids[i] == pid) {
587 oldpids[i] = oldpids[nb_oldpids - 1];
588 oldpids[nb_oldpids - 1] = 0;
589 nb_oldpids--;
590 return 1;
591 }
592 }
593 return 0;
594}
595
William Lallemand85b0bd92017-06-01 17:38:53 +0200596
597static void get_cur_unixsocket()
598{
599 /* if -x was used, try to update the stat socket if not available anymore */
600 if (global.stats_fe) {
601 struct bind_conf *bind_conf;
602
603 /* pass through all stats socket */
604 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
605 struct listener *l;
606
607 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
608
609 if (l->addr.ss_family == AF_UNIX &&
610 (bind_conf->level & ACCESS_FD_LISTENERS)) {
611 const struct sockaddr_un *un;
612
613 un = (struct sockaddr_un *)&l->addr;
614 /* priority to old_unixsocket */
615 if (!cur_unixsocket) {
616 cur_unixsocket = strdup(un->sun_path);
617 } else {
618 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
619 free(cur_unixsocket);
620 cur_unixsocket = strdup(old_unixsocket);
621 return;
622 }
623 }
624 }
625 }
626 }
627 }
628 if (!cur_unixsocket && old_unixsocket)
629 cur_unixsocket = strdup(old_unixsocket);
630}
631
William Lallemand73b85e72017-06-01 17:38:51 +0200632/*
633 * When called, this function reexec haproxy with -sf followed by current
634 * children PIDs and possibily old children PIDs if they didn't leave yet.
635 */
636static void mworker_reload()
637{
638 int next_argc = 0;
639 int j;
640 char *msg = NULL;
641
642 mworker_block_signals();
643 mworker_unregister_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100644#if defined(USE_SYSTEMD)
645 if (global.tune.options & GTUNE_USE_SYSTEMD)
646 sd_notify(0, "RELOADING=1");
647#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200648 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
649
650 /* compute length */
651 while (next_argv[next_argc])
652 next_argc++;
653
William Lallemand85b0bd92017-06-01 17:38:53 +0200654 /* 1 for haproxy -sf, 2 for -x /socket */
655 next_argv = realloc(next_argv, (next_argc + 1 + 2 + global.nbproc + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200656 if (next_argv == NULL)
657 goto alloc_error;
658
659
660 /* add -sf <PID>* to argv */
661 if (children || nb_oldpids > 0)
662 next_argv[next_argc++] = "-sf";
663 if (children) {
664 for (j = 0; j < global.nbproc; next_argc++,j++) {
665 next_argv[next_argc] = memprintf(&msg, "%d", children[j]);
666 if (next_argv[next_argc] == NULL)
667 goto alloc_error;
668 msg = NULL;
669 }
670 }
671 /* copy old process PIDs */
672 for (j = 0; j < nb_oldpids; next_argc++,j++) {
673 next_argv[next_argc] = memprintf(&msg, "%d", oldpids[j]);
674 if (next_argv[next_argc] == NULL)
675 goto alloc_error;
676 msg = NULL;
677 }
678 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200679
William Lallemand2bf6d622017-06-20 11:20:23 +0200680 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200681 if (cur_unixsocket) {
682
William Lallemand2bf6d622017-06-20 11:20:23 +0200683 next_argv[next_argc++] = "-x";
684 next_argv[next_argc++] = (char *)cur_unixsocket;
685 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200686 }
687
William Lallemand73b85e72017-06-01 17:38:51 +0200688 Warning("Reexecuting Master process\n");
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100689 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200690
William Lallemand722d4ca2017-11-15 19:02:55 +0100691 Warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
692 return;
693
William Lallemand73b85e72017-06-01 17:38:51 +0200694alloc_error:
William Lallemand722d4ca2017-11-15 19:02:55 +0100695 Warning("Failed to reexecute the master processs [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200696 return;
697}
698
699
700/*
701 * Wait for every children to exit
702 */
703
704static void mworker_wait()
705{
706 int exitpid = -1;
707 int status = 0;
708
William Lallemand2f8b31c2017-11-15 19:02:56 +0100709restart_wait:
710
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100711#if defined(USE_SYSTEMD)
712 if (global.tune.options & GTUNE_USE_SYSTEMD)
713 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
714#endif
715
William Lallemand73b85e72017-06-01 17:38:51 +0200716 mworker_register_signals();
717 mworker_unblock_signals();
718
719 while (1) {
720
721 while (((exitpid = wait(&status)) == -1) && errno == EINTR) {
722 int sig = caught_signal;
723 if (sig == SIGUSR2 || sig == SIGHUP) {
724 mworker_reload();
William Lallemand2f8b31c2017-11-15 19:02:56 +0100725 /* should reach there only if it fail */
726 goto restart_wait;
William Lallemand73b85e72017-06-01 17:38:51 +0200727 } else {
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100728#if defined(USE_SYSTEMD)
729 if ((global.tune.options & GTUNE_USE_SYSTEMD) && (sig == SIGUSR1 || sig == SIGTERM)) {
730 sd_notify(0, "STOPPING=1");
731 }
732#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200733 Warning("Exiting Master process...\n");
734 mworker_kill(sig);
735 mworker_unregister_signals();
736 }
737 caught_signal = 0;
738 }
739
740 if (exitpid == -1 && errno == ECHILD) {
741 Warning("All workers are left. Leaving... (%d)\n", status);
William Lallemandcb11fd22017-06-01 17:38:52 +0200742 atexit_flag = 0;
William Lallemand73b85e72017-06-01 17:38:51 +0200743 exit(status); /* parent must leave using the latest status code known */
744 }
745
746 if (WIFEXITED(status))
747 status = WEXITSTATUS(status);
748 else if (WIFSIGNALED(status))
749 status = 128 + WTERMSIG(status);
750 else if (WIFSTOPPED(status))
751 status = 128 + WSTOPSIG(status);
752 else
753 status = 255;
754
755 if (!children) {
756 Warning("Worker %d left with exit code %d\n", exitpid, status);
757 } else {
758 /* check if exited child was in the current children list */
759 if (current_child(exitpid)) {
760 Alert("Current worker %d left with exit code %d\n", exitpid, status);
William Lallemand69f9b3b2017-06-01 17:38:54 +0200761 if (status != 0 && status != 130 && status != 143
762 && global.tune.options & GTUNE_EXIT_ONFAILURE) {
763 Alert("exit-on-failure: killing every workers with SIGTERM\n");
764 mworker_kill(SIGTERM);
765 }
William Lallemand73b85e72017-06-01 17:38:51 +0200766 } else {
767 Warning("Former worker %d left with exit code %d\n", exitpid, status);
768 delete_oldpid(exitpid);
769 }
770 }
771 }
772}
773
William Lallemandcb11fd22017-06-01 17:38:52 +0200774
775/*
776 * Reexec the process in failure mode, instead of exiting
777 */
778void reexec_on_failure()
779{
780 if (!atexit_flag)
781 return;
782
783 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
784
785 Warning("Reexecuting Master process in waitpid mode\n");
786 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200787}
William Lallemand73b85e72017-06-01 17:38:51 +0200788
789
790/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200791 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
792 * a signal zero to all subscribers. This means that it's as easy as
793 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200794 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100795static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200796{
797 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200798 signal_unregister_handler(sh);
Christopher Fauletb349e482017-08-29 09:52:38 +0200799 pool_gc2(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200800}
801
802/*
803 * upon SIGTTOU, we pause everything
804 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100805static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200806{
807 pause_proxies();
Christopher Fauletb349e482017-08-29 09:52:38 +0200808 pool_gc2(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200809}
810
811/*
812 * upon SIGTTIN, let's have a soft stop.
813 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100814static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200815{
Willy Tarreaube58c382011-07-24 18:28:10 +0200816 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200817}
818
819/*
820 * this function dumps every server's state when the process receives SIGHUP.
821 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100822static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200823{
824 struct proxy *p = proxy;
825
826 Warning("SIGHUP received, dumping servers states.\n");
827 while (p) {
828 struct server *s = p->srv;
829
830 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
831 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100832 chunk_printf(&trash,
833 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
834 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200835 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100836 s->cur_sess, s->nbpend, s->counters.cum_sess);
837 Warning("%s\n", trash.str);
838 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200839 s = s->next;
840 }
841
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200842 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
843 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100844 chunk_printf(&trash,
845 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
846 p->id,
847 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 +0200848 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100849 chunk_printf(&trash,
850 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
851 p->id,
852 (p->srv_bck) ? "is running on backup servers" : "has no server available",
853 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 +0200854 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100855 chunk_printf(&trash,
856 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
857 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
858 p->id, p->srv_act, p->srv_bck,
859 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 +0200860 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100861 Warning("%s\n", trash.str);
862 send_log(p, LOG_NOTICE, "%s\n", trash.str);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200863
864 p = p->next;
865 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200866}
867
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100868static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200869{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +0200870 /* dump memory usage then free everything possible */
871 dump_pools();
Christopher Fauletb349e482017-08-29 09:52:38 +0200872 pool_gc2(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200873}
874
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200875/* This function check if cfg_cfgfiles containes directories.
876 * If it find one, it add all the files (and only files) it containes
877 * in cfg_cfgfiles in place of the directory (and remove the directory).
878 * It add the files in lexical order.
879 * It add only files with .cfg extension.
880 * It doesn't add files with name starting with '.'
881 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100882static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200883{
884 struct wordlist *wl, *wlb;
885 char *err = NULL;
886
887 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
888 struct stat file_stat;
889 struct dirent **dir_entries = NULL;
890 int dir_entries_nb;
891 int dir_entries_it;
892
893 if (stat(wl->s, &file_stat)) {
894 Alert("Cannot open configuration file/directory %s : %s\n",
895 wl->s,
896 strerror(errno));
897 exit(1);
898 }
899
900 if (!S_ISDIR(file_stat.st_mode))
901 continue;
902
903 /* from this point wl->s is a directory */
904
905 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
906 if (dir_entries_nb < 0) {
907 Alert("Cannot open configuration directory %s : %s\n",
908 wl->s,
909 strerror(errno));
910 exit(1);
911 }
912
913 /* for each element in the directory wl->s */
914 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
915 struct dirent *dir_entry = dir_entries[dir_entries_it];
916 char *filename = NULL;
917 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
918
919 /* don't add filename that begin with .
920 * only add filename with .cfg extention
921 */
922 if (dir_entry->d_name[0] == '.' ||
923 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
924 goto next_dir_entry;
925
926 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
927 Alert("Cannot load configuration files %s : out of memory.\n",
928 filename);
929 exit(1);
930 }
931
932 if (stat(filename, &file_stat)) {
933 Alert("Cannot open configuration file %s : %s\n",
934 wl->s,
935 strerror(errno));
936 exit(1);
937 }
938
939 /* don't add anything else than regular file in cfg_cfgfiles
940 * this way we avoid loops
941 */
942 if (!S_ISREG(file_stat.st_mode))
943 goto next_dir_entry;
944
945 if (!list_append_word(&wl->list, filename, &err)) {
946 Alert("Cannot load configuration files %s : %s\n",
947 filename,
948 err);
949 exit(1);
950 }
951
952next_dir_entry:
953 free(filename);
954 free(dir_entry);
955 }
956
957 free(dir_entries);
958
959 /* remove the current directory (wl) from cfg_cfgfiles */
960 free(wl->s);
961 LIST_DEL(&wl->list);
962 free(wl);
963 }
964
965 free(err);
966}
967
Olivier Houchardf73629d2017-04-05 22:33:04 +0200968static int get_old_sockets(const char *unixsocket)
969{
970 char *cmsgbuf = NULL, *tmpbuf = NULL;
971 int *tmpfd = NULL;
972 struct sockaddr_un addr;
973 struct cmsghdr *cmsg;
974 struct msghdr msghdr;
975 struct iovec iov;
976 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +0200977 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +0200978 int sock = -1;
979 int ret = -1;
980 int ret2 = -1;
981 int fd_nb;
982 int got_fd = 0;
983 int i = 0;
984 size_t maxoff = 0, curoff = 0;
985
986 memset(&msghdr, 0, sizeof(msghdr));
987 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
988 if (!cmsgbuf) {
989 Warning("Failed to allocate memory to send sockets\n");
990 goto out;
991 }
992 sock = socket(PF_UNIX, SOCK_STREAM, 0);
993 if (sock < 0) {
994 Warning("Failed to connect to the old process socket '%s'\n",
995 unixsocket);
996 goto out;
997 }
998 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
999 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1000 addr.sun_family = PF_UNIX;
1001 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1002 if (ret < 0) {
1003 Warning("Failed to connect to the old process socket '%s'\n",
1004 unixsocket);
1005 goto out;
1006 }
Olivier Houchard54740872017-04-06 14:45:14 +02001007 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001008 iov.iov_base = &fd_nb;
1009 iov.iov_len = sizeof(fd_nb);
1010 msghdr.msg_iov = &iov;
1011 msghdr.msg_iovlen = 1;
1012 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1013 /* First, get the number of file descriptors to be received */
1014 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
1015 Warning("Failed to get the number of sockets to be transferred !\n");
1016 goto out;
1017 }
1018 if (fd_nb == 0) {
1019 ret = 0;
1020 goto out;
1021 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001022 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001023 if (tmpbuf == NULL) {
1024 Warning("Failed to allocate memory while receiving sockets\n");
1025 goto out;
1026 }
1027 tmpfd = malloc(fd_nb * sizeof(int));
1028 if (tmpfd == NULL) {
1029 Warning("Failed to allocate memory while receiving sockets\n");
1030 goto out;
1031 }
1032 msghdr.msg_control = cmsgbuf;
1033 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001034 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001035 do {
1036 int ret3;
1037
1038 iov.iov_base = tmpbuf + curoff;
1039 ret = recvmsg(sock, &msghdr, 0);
1040 if (ret == -1 && errno == EINTR)
1041 continue;
1042 if (ret <= 0)
1043 break;
1044 /* Send an ack to let the sender know we got the sockets
1045 * and it can send some more
1046 */
1047 do {
1048 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1049 } while (ret3 == -1 && errno == EINTR);
1050 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1051 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1052 if (cmsg->cmsg_level == SOL_SOCKET &&
1053 cmsg->cmsg_type == SCM_RIGHTS) {
1054 size_t totlen = cmsg->cmsg_len -
1055 CMSG_LEN(0);
1056 if (totlen / sizeof(int) + got_fd > fd_nb) {
1057 Warning("Got to many sockets !\n");
1058 goto out;
1059 }
1060 /*
1061 * Be paranoid and use memcpy() to avoid any
1062 * potential alignement issue.
1063 */
1064 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1065 got_fd += totlen / sizeof(int);
1066 }
1067 }
1068 curoff += ret;
1069 } while (got_fd < fd_nb);
1070
1071 if (got_fd != fd_nb) {
1072 Warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1073 fd_nb, got_fd);
1074 goto out;
1075 }
1076 maxoff = curoff;
1077 curoff = 0;
1078 for (i = 0; i < got_fd; i++) {
1079 int fd = tmpfd[i];
1080 socklen_t socklen;
1081 int len;
1082
1083 xfer_sock = calloc(1, sizeof(*xfer_sock));
1084 if (!xfer_sock) {
1085 Warning("Failed to allocate memory in get_old_sockets() !\n");
1086 break;
1087 }
1088 xfer_sock->fd = -1;
1089
1090 socklen = sizeof(xfer_sock->addr);
1091 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
1092 Warning("Failed to get socket address\n");
1093 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001094 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001095 continue;
1096 }
1097 if (curoff >= maxoff) {
1098 Warning("Inconsistency while transferring sockets\n");
1099 goto out;
1100 }
1101 len = tmpbuf[curoff++];
1102 if (len > 0) {
1103 /* We have a namespace */
1104 if (curoff + len > maxoff) {
1105 Warning("Inconsistency while transferring sockets\n");
1106 goto out;
1107 }
1108 xfer_sock->namespace = malloc(len + 1);
1109 if (!xfer_sock->namespace) {
1110 Warning("Failed to allocate memory while transferring sockets\n");
1111 goto out;
1112 }
1113 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1114 xfer_sock->namespace[len] = 0;
1115 curoff += len;
1116 }
1117 if (curoff >= maxoff) {
1118 Warning("Inconsistency while transferring sockets\n");
1119 goto out;
1120 }
1121 len = tmpbuf[curoff++];
1122 if (len > 0) {
1123 /* We have an interface */
1124 if (curoff + len > maxoff) {
1125 Warning("Inconsistency while transferring sockets\n");
1126 goto out;
1127 }
1128 xfer_sock->iface = malloc(len + 1);
1129 if (!xfer_sock->iface) {
1130 Warning("Failed to allocate memory while transferring sockets\n");
1131 goto out;
1132 }
1133 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
1134 xfer_sock->namespace[len] = 0;
1135 curoff += len;
1136 }
1137 if (curoff + sizeof(int) > maxoff) {
1138 Warning("Inconsistency while transferring sockets\n");
1139 goto out;
1140 }
1141 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1142 sizeof(xfer_sock->options));
1143 curoff += sizeof(xfer_sock->options);
1144
1145 xfer_sock->fd = fd;
1146 if (xfer_sock_list)
1147 xfer_sock_list->prev = xfer_sock;
1148 xfer_sock->next = xfer_sock_list;
1149 xfer_sock->prev = NULL;
1150 xfer_sock_list = xfer_sock;
1151 xfer_sock = NULL;
1152 }
1153
1154 ret2 = 0;
1155out:
1156 /* If we failed midway make sure to close the remaining
1157 * file descriptors
1158 */
1159 if (tmpfd != NULL && i < got_fd) {
1160 for (; i < got_fd; i++) {
1161 close(tmpfd[i]);
1162 }
1163 }
1164 free(tmpbuf);
1165 free(tmpfd);
1166 free(cmsgbuf);
1167 if (sock != -1)
1168 close(sock);
1169 if (xfer_sock) {
1170 free(xfer_sock->namespace);
1171 free(xfer_sock->iface);
1172 if (xfer_sock->fd != -1)
1173 close(xfer_sock->fd);
1174 free(xfer_sock);
1175 }
1176 return (ret2);
1177}
1178
Willy Tarreaubaaee002006-06-26 02:48:02 +02001179/*
William Lallemand73b85e72017-06-01 17:38:51 +02001180 * copy and cleanup the current argv
1181 * Remove the -sf /-st parameters
1182 * Return an allocated copy of argv
1183 */
1184
1185static char **copy_argv(int argc, char **argv)
1186{
1187 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001188 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001189
1190 newargv = calloc(argc + 2, sizeof(char *));
1191 if (newargv == NULL) {
1192 Warning("Cannot allocate memory\n");
1193 return NULL;
1194 }
1195
William Lallemand2bf6d622017-06-20 11:20:23 +02001196 while (i < argc) {
1197 /* -sf or -st or -x */
1198 if ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' ) {
1199 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001200 i++;
1201 while (i < argc && argv[i][0] != '-') {
1202 i++;
1203 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001204 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001205 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001206
1207 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001208 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001209
William Lallemand73b85e72017-06-01 17:38:51 +02001210 return newargv;
1211}
1212
1213/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001214 * This function initializes all the necessary variables. It only returns
1215 * if everything is OK. If something fails, it exits.
1216 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001217static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001218{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001219 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001220 char *tmp;
1221 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001222 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001223 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001224 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001225 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001226 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001227 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001228 struct post_check_fct *pcf;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001229
Christopher Faulete3a5e352017-10-24 13:53:54 +02001230 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001231 next_argv = copy_argv(argc, argv);
1232
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001233 if (!init_trash_buffers(1)) {
Christopher Faulet748919a2017-07-26 14:59:46 +02001234 Alert("failed to initialize trash buffers.\n");
1235 exit(1);
1236 }
David du Colombier7af46052012-05-16 14:16:48 +02001237
Emeric Brun2b920a12010-09-23 18:30:22 +02001238 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1239 * the string in case of truncation, and at least FreeBSD appears not to do
1240 * it.
1241 */
1242 memset(hostname, 0, sizeof(hostname));
1243 gethostname(hostname, sizeof(hostname) - 1);
1244 memset(localpeer, 0, sizeof(localpeer));
1245 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
1246
Willy Tarreaubaaee002006-06-26 02:48:02 +02001247 /*
1248 * Initialize the previously static variables.
1249 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001250
Willy Tarreau3eba98a2009-01-25 13:56:13 +01001251 totalconn = actconn = maxfd = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001252 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001253
Willy Tarreaubaaee002006-06-26 02:48:02 +02001254
1255#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001256 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001257#endif
1258
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001259 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001260 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001261 start_date = now;
1262
Willy Tarreau84310e22014-02-14 11:59:04 +01001263 srandom(now_ms - getpid());
1264
Dragan Dosen835b9212016-02-12 13:23:03 +01001265 init_log();
Willy Tarreau29857942009-05-10 09:01:21 +02001266 signal_init();
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001267 if (init_acl() != 0)
1268 exit(1);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001269 init_task();
Willy Tarreau87b09662015-04-03 00:22:06 +02001270 init_stream();
Willy Tarreaub1ec8c42015-04-03 13:53:24 +02001271 init_session();
Willy Tarreauf2943dc2012-10-26 20:10:28 +02001272 init_connection();
Willy Tarreau8280d642009-09-23 23:37:52 +02001273 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001274 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +01001275 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001276
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001277 /* Initialise lua. */
1278 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001279
Christopher Fauletff2613e2016-11-09 11:36:17 +01001280 /* Initialize process vars */
1281 vars_init(&global.vars, SCOPE_PROC);
1282
Willy Tarreau43b78992009-01-25 15:42:27 +01001283 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001284#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001285 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001286#endif
1287#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001288 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001289#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001290#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001291 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001292#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001293#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001294 global.tune.options |= GTUNE_USE_SPLICE;
1295#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001296#if defined(USE_GETADDRINFO)
1297 global.tune.options |= GTUNE_USE_GAI;
1298#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001299#if defined(SO_REUSEPORT)
1300 global.tune.options |= GTUNE_USE_REUSEPORT;
1301#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001302
1303 pid = getpid();
1304 progname = *argv;
1305 while ((tmp = strchr(progname, '/')) != NULL)
1306 progname = tmp + 1;
1307
Kevinm48936af2010-12-22 16:08:21 +00001308 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001309 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001310
Willy Tarreaubaaee002006-06-26 02:48:02 +02001311 argc--; argv++;
1312 while (argc > 0) {
1313 char *flag;
1314
1315 if (**argv == '-') {
1316 flag = *argv+1;
1317
1318 /* 1 arg */
1319 if (*flag == 'v') {
1320 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001321 if (flag[1] == 'v') /* -vv */
1322 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001323 exit(0);
1324 }
1325#if defined(ENABLE_EPOLL)
1326 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001327 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001328#endif
1329#if defined(ENABLE_POLL)
1330 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001331 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001332#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +02001333#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001334 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001335 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001336#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001337#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001338 else if (*flag == 'd' && flag[1] == 'S')
1339 global.tune.options &= ~GTUNE_USE_SPLICE;
1340#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001341#if defined(USE_GETADDRINFO)
1342 else if (*flag == 'd' && flag[1] == 'G')
1343 global.tune.options &= ~GTUNE_USE_GAI;
1344#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001345#if defined(SO_REUSEPORT)
1346 else if (*flag == 'd' && flag[1] == 'R')
1347 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1348#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001349 else if (*flag == 'd' && flag[1] == 'V')
1350 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001351 else if (*flag == 'V')
1352 arg_mode |= MODE_VERBOSE;
1353 else if (*flag == 'd' && flag[1] == 'b')
1354 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001355 else if (*flag == 'd' && flag[1] == 'M')
1356 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001357 else if (*flag == 'd' && flag[1] == 'r')
1358 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001359 else if (*flag == 'd')
1360 arg_mode |= MODE_DEBUG;
1361 else if (*flag == 'c')
1362 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001363 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001364 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001365 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001366 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001367#if defined(USE_SYSTEMD)
1368 global.tune.options |= GTUNE_USE_SYSTEMD;
1369#else
1370 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");
1371 usage(progname);
1372#endif
1373 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001374 else if (*flag == 'W')
1375 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001376 else if (*flag == 'q')
1377 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001378 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001379 if (argc <= 1 || argv[1][0] == '-') {
1380 Alert("Unix socket path expected with the -x flag\n\n");
1381 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001382 }
William Lallemand4fc09692017-06-19 16:37:19 +02001383 if (old_unixsocket)
1384 Warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001385 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001386
Olivier Houchardf73629d2017-04-05 22:33:04 +02001387 argv++;
1388 argc--;
1389 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001390 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1391 /* list of pids to finish ('f') or terminate ('t') */
1392
1393 if (flag[1] == 'f')
1394 oldpids_sig = SIGUSR1; /* finish then exit */
1395 else
1396 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001397 while (argc > 1 && argv[1][0] != '-') {
1398 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1399 if (!oldpids) {
1400 Alert("Cannot allocate old pid : out of memory.\n");
1401 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001402 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001403 argc--; argv++;
1404 oldpids[nb_oldpids] = atol(*argv);
1405 if (oldpids[nb_oldpids] <= 0)
1406 usage(progname);
1407 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001408 }
1409 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001410 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1411 /* now that's a cfgfile list */
1412 argv++; argc--;
1413 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001414 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
1415 Alert("Cannot load configuration file/directory %s : %s\n",
1416 *argv,
1417 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001418 exit(1);
1419 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001420 argv++; argc--;
1421 }
1422 break;
1423 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001424 else { /* >=2 args */
1425 argv++; argc--;
1426 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001427 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001428
1429 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001430 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001431 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001432 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001433 case 'N' : cfg_maxpconn = atol(*argv); break;
Emeric Brun2b920a12010-09-23 18:30:22 +02001434 case 'L' : strncpy(localpeer, *argv, sizeof(localpeer) - 1); break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001435 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001436 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
1437 Alert("Cannot load configuration file/directory %s : %s\n",
1438 *argv,
1439 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001440 exit(1);
1441 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001442 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001443 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001444 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001445 }
1446 }
1447 }
1448 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001449 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001450 argv++; argc--;
1451 }
1452
Christopher Faulete3a5e352017-10-24 13:53:54 +02001453 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1454 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001455
William Lallemandcb11fd22017-06-01 17:38:52 +02001456 /* Master workers wait mode */
1457 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_WAIT_ONLY") != NULL)) {
1458
1459 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
1460 mworker_wait();
1461 }
1462
1463 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1464 atexit_flag = 1;
1465 atexit(reexec_on_failure);
1466 }
1467
Willy Tarreau576132e2011-09-10 19:26:56 +02001468 if (change_dir && chdir(change_dir) < 0) {
1469 Alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
1470 exit(1);
1471 }
1472
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001473 /* handle cfgfiles that are actualy directories */
1474 cfgfiles_expand_directories();
1475
1476 if (LIST_ISEMPTY(&cfg_cfgfiles))
1477 usage(progname);
1478
Willy Tarreaubaaee002006-06-26 02:48:02 +02001479 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001480
1481 init_default_instance();
1482
Willy Tarreau477ecd82010-01-03 21:12:30 +01001483 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +01001484 int ret;
1485
Willy Tarreau477ecd82010-01-03 21:12:30 +01001486 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +01001487 if (ret == -1) {
1488 Alert("Could not open configuration file %s : %s\n",
Willy Tarreau477ecd82010-01-03 21:12:30 +01001489 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +01001490 exit(1);
1491 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001492 if (ret & (ERR_ABORT|ERR_FATAL))
Willy Tarreau477ecd82010-01-03 21:12:30 +01001493 Alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001494 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +02001495 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +02001496 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001497 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001498
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001499 /* do not try to resolve arguments nor to spot inconsistencies when
1500 * the configuration contains fatal errors caused by files not found
1501 * or failed memory allocations.
1502 */
1503 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1504 Alert("Fatal errors found in configuration.\n");
1505 exit(1);
1506 }
1507
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +01001508 pattern_finalize_config();
1509
Willy Tarreaubb925012009-07-23 13:36:36 +02001510 err_code |= check_config_validity();
1511 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1512 Alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001513 exit(1);
1514 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001515
Willy Tarreau70060452015-12-14 12:46:07 +01001516 /* recompute the amount of per-process memory depending on nbproc and
1517 * the shared SSL cache size (allowed to exist in all processes).
1518 */
1519 if (global.rlimit_memmax_all) {
1520#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1521 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1522
1523 global.rlimit_memmax =
1524 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1525 ssl_cache_bytes) / global.nbproc +
1526 ssl_cache_bytes + 1048575LL) / 1048576LL;
1527#else
1528 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1529#endif
1530 }
1531
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001532#ifdef CONFIG_HAP_NS
1533 err_code |= netns_init();
1534 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1535 Alert("Failed to initialize namespace support.\n");
1536 exit(1);
1537 }
1538#endif
1539
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001540 /* Apply server states */
1541 apply_server_state();
1542
1543 for (px = proxy; px; px = px->next)
1544 srv_compute_all_admin_states(px);
1545
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001546 /* Apply servers' configured address */
1547 err_code |= srv_init_addr();
1548 if (err_code & (ERR_ABORT|ERR_FATAL)) {
1549 Alert("Failed to initialize server(s) addr.\n");
1550 exit(1);
1551 }
1552
Willy Tarreaubaaee002006-06-26 02:48:02 +02001553 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001554 struct peers *pr;
1555 struct proxy *px;
1556
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001557 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001558 if (pr->peers_fe)
1559 break;
1560
1561 for (px = proxy; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001562 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001563 break;
1564
1565 if (pr || px) {
1566 /* At least one peer or one listener has been found */
1567 qfprintf(stdout, "Configuration file is valid\n");
1568 exit(0);
1569 }
1570 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1571 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001572 }
1573
Emeric Brunc60def82017-09-27 14:59:38 +02001574 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001575 if (!global_listener_queue_task) {
1576 Alert("Out of memory when initializing global task\n");
1577 exit(1);
1578 }
1579 /* very simple initialization, users will queue the task if needed */
1580 global_listener_queue_task->context = NULL; /* not even a context! */
1581 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001582
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001583 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001584 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001585
Willy Tarreaue6945732016-12-21 19:57:00 +01001586 list_for_each_entry(pcf, &post_check_list, list) {
1587 err_code |= pcf->fct();
1588 if (err_code & (ERR_ABORT|ERR_FATAL))
1589 exit(1);
1590 }
1591
Willy Tarreaubaaee002006-06-26 02:48:02 +02001592 if (cfg_maxconn > 0)
1593 global.maxconn = cfg_maxconn;
1594
1595 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001596 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001597 global.pidfile = strdup(cfg_pidfile);
1598 }
1599
Willy Tarreaud0256482015-01-15 21:45:22 +01001600 /* Now we want to compute the maxconn and possibly maxsslconn values.
1601 * It's a bit tricky. If memmax is not set, maxconn defaults to
1602 * DEFAULT_MAXCONN and maxsslconn defaults to DEFAULT_MAXSSLCONN.
1603 *
1604 * If memmax is set, then it depends on which values are set. If
1605 * maxsslconn is set, we use memmax to determine how many cleartext
1606 * connections may be added, and set maxconn to the sum of the two.
1607 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1608 * the remaining amount of memory between memmax and the cleartext
1609 * connections. If neither are set, then it is considered that all
1610 * connections are SSL-capable, and maxconn is computed based on this,
1611 * then maxsslconn accordingly. We need to know if SSL is used on the
1612 * frontends, backends, or both, because when it's used on both sides,
1613 * we need twice the value for maxsslconn, but we only count the
1614 * handshake once since it is not performed on the two sides at the
1615 * same time (frontend-side is terminated before backend-side begins).
1616 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001617 * ssl_handshake_cost during its initialization. In any case, if
1618 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1619 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001620 */
1621 if (!global.rlimit_memmax) {
1622 if (global.maxconn == 0) {
1623 global.maxconn = DEFAULT_MAXCONN;
1624 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1625 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1626 }
1627 }
1628#ifdef USE_OPENSSL
1629 else if (!global.maxconn && !global.maxsslconn &&
1630 (global.ssl_used_frontend || global.ssl_used_backend)) {
1631 /* memmax is set, compute everything automatically. Here we want
1632 * to ensure that all SSL connections will be served. We take
1633 * care of the number of sides where SSL is used, and consider
1634 * the worst case : SSL used on both sides and doing a handshake
1635 * simultaneously. Note that we can't have more than maxconn
1636 * handshakes at a time by definition, so for the worst case of
1637 * two SSL conns per connection, we count a single handshake.
1638 */
1639 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1640 int64_t mem = global.rlimit_memmax * 1048576ULL;
1641
1642 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1643 mem -= global.maxzlibmem;
1644 mem = mem * MEM_USABLE_RATIO;
1645
1646 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001647 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001648 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1649 global.ssl_handshake_max_cost); // 1 handshake per connection max
1650
1651 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001652#ifdef SYSTEM_MAXCONN
1653 if (global.maxconn > DEFAULT_MAXCONN)
1654 global.maxconn = DEFAULT_MAXCONN;
1655#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001656 global.maxsslconn = sides * global.maxconn;
1657 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1658 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1659 global.maxconn, global.maxsslconn);
1660 }
1661 else if (!global.maxsslconn &&
1662 (global.ssl_used_frontend || global.ssl_used_backend)) {
1663 /* memmax and maxconn are known, compute maxsslconn automatically.
1664 * maxsslconn being forced, we don't know how many of it will be
1665 * on each side if both sides are being used. The worst case is
1666 * when all connections use only one SSL instance because
1667 * handshakes may be on two sides at the same time.
1668 */
1669 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1670 int64_t mem = global.rlimit_memmax * 1048576ULL;
1671 int64_t sslmem;
1672
1673 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1674 mem -= global.maxzlibmem;
1675 mem = mem * MEM_USABLE_RATIO;
1676
Willy Tarreau87b09662015-04-03 00:22:06 +02001677 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001678 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1679 global.maxsslconn = round_2dig(global.maxsslconn);
1680
1681 if (sslmem <= 0 || global.maxsslconn < sides) {
1682 Alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1683 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1684 "without SSL is %d, but %d was found and SSL is in use.\n",
1685 global.rlimit_memmax,
Willy Tarreau87b09662015-04-03 00:22:06 +02001686 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
Willy Tarreaud0256482015-01-15 21:45:22 +01001687 global.maxconn);
1688 exit(1);
1689 }
1690
1691 if (global.maxsslconn > sides * global.maxconn)
1692 global.maxsslconn = sides * global.maxconn;
1693
1694 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1695 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1696 }
1697#endif
1698 else if (!global.maxconn) {
1699 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1700 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1701 int64_t mem = global.rlimit_memmax * 1048576ULL;
1702 int64_t clearmem;
1703
1704 if (global.ssl_used_frontend || global.ssl_used_backend)
1705 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1706
1707 mem -= global.maxzlibmem;
1708 mem = mem * MEM_USABLE_RATIO;
1709
1710 clearmem = mem;
1711 if (sides)
1712 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1713
Willy Tarreau87b09662015-04-03 00:22:06 +02001714 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001715 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001716#ifdef SYSTEM_MAXCONN
1717 if (global.maxconn > DEFAULT_MAXCONN)
1718 global.maxconn = DEFAULT_MAXCONN;
1719#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001720
1721 if (clearmem <= 0 || !global.maxconn) {
1722 Alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1723 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1724 "is %d, but %d was found.\n",
1725 global.rlimit_memmax,
1726 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1727 global.maxsslconn);
1728 exit(1);
1729 }
1730
1731 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1732 if (sides && global.maxsslconn > sides * global.maxconn) {
1733 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
1734 "to be limited to %d. Better reduce global.maxsslconn to get more "
1735 "room for extra connections.\n", global.maxsslconn, global.maxconn);
1736 }
1737 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
1738 }
1739 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001740
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001741 if (!global.maxpipes) {
1742 /* maxpipes not specified. Count how many frontends and backends
1743 * may be using splicing, and bound that to maxconn.
1744 */
1745 struct proxy *cur;
1746 int nbfe = 0, nbbe = 0;
1747
1748 for (cur = proxy; cur; cur = cur->next) {
1749 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1750 if (cur->cap & PR_CAP_FE)
1751 nbfe += cur->maxconn;
1752 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +01001753 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001754 }
1755 }
1756 global.maxpipes = MAX(nbfe, nbbe);
1757 if (global.maxpipes > global.maxconn)
1758 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +01001759 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001760 }
1761
1762
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001763 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001764 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01001765 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001766
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001767 if (global.stats_fe)
1768 global.maxsock += global.stats_fe->maxconn;
1769
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001770 if (cfg_peers) {
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001771 /* peers also need to bypass global maxconn */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001772 struct peers *p = cfg_peers;
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001773
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001774 for (p = cfg_peers; p; p = p->next)
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001775 if (p->peers_fe)
1776 global.maxsock += p->peers_fe->maxconn;
1777 }
1778
Willy Tarreau1db37712007-06-03 17:16:49 +02001779 if (global.tune.maxpollevents <= 0)
1780 global.tune.maxpollevents = MAX_POLL_EVENTS;
1781
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01001782 if (global.tune.recv_enough == 0)
1783 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
1784
Willy Tarreau27097842015-09-28 13:53:23 +02001785 if (global.tune.maxrewrite < 0)
1786 global.tune.maxrewrite = MAXREWRITE;
1787
Willy Tarreau27a674e2009-08-17 07:23:33 +02001788 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
1789 global.tune.maxrewrite = global.tune.bufsize / 2;
1790
Willy Tarreaubaaee002006-06-26 02:48:02 +02001791 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
1792 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02001793 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001794 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
1795 }
1796
William Lallemand095ba4c2017-06-01 17:38:50 +02001797 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001798 /* command line daemon mode inhibits foreground and debug modes mode */
1799 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02001800 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001801 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001802
1803 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001804
William Lallemand095ba4c2017-06-01 17:38:50 +02001805 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
1806 Warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
1807 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001808 }
1809
William Lallemand095ba4c2017-06-01 17:38:50 +02001810 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02001811 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
William Lallemandcc113822017-11-06 11:00:02 +01001812 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 +02001813 global.nbproc = 1;
1814 }
1815
1816 if (global.nbproc < 1)
1817 global.nbproc = 1;
1818
Christopher Fauletbe0faa22017-08-29 15:37:10 +02001819 if (global.nbthread < 1)
1820 global.nbthread = 1;
1821
Christopher Faulet3ef26392017-08-29 16:46:57 +02001822 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001823 if (!init_trash_buffers(0)) {
Christopher Faulet3ef26392017-08-29 16:46:57 +02001824 Alert("failed to initialize trash buffers.\n");
1825 exit(1);
1826 }
1827
Christopher Faulet96d44832017-11-14 22:02:30 +01001828 if (!init_log_buffers()) {
1829 Alert("failed to initialize log buffers.\n");
1830 exit(1);
1831 }
1832
Willy Tarreauef1d1f82007-04-16 00:25:25 +02001833 /*
1834 * Note: we could register external pollers here.
1835 * Built-in pollers have been registered before main().
1836 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02001837
Willy Tarreau43b78992009-01-25 15:42:27 +01001838 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001839 disable_poller("kqueue");
1840
Willy Tarreau43b78992009-01-25 15:42:27 +01001841 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001842 disable_poller("epoll");
1843
Willy Tarreau43b78992009-01-25 15:42:27 +01001844 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001845 disable_poller("poll");
1846
Willy Tarreau43b78992009-01-25 15:42:27 +01001847 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02001848 disable_poller("select");
1849
1850 /* Note: we could disable any poller by name here */
1851
Christopher Fauletb3f4e142016-03-07 12:46:38 +01001852 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02001853 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01001854 fprintf(stderr, "\n");
1855 list_filters(stderr);
1856 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001857
Willy Tarreau4f60f162007-04-08 16:39:58 +02001858 if (!init_pollers()) {
Willy Tarreau3fa87b12013-03-31 14:41:15 +02001859 Alert("No polling mechanism available.\n"
1860 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
1861 " is too low on this platform to support maxconn and the number of listeners\n"
1862 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
1863 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
Prach Pongpanichb837e682013-05-14 20:56:28 +02001864 " global maxconn setting to accommodate the system's limitation. For reference,\n"
Willy Tarreau3fa87b12013-03-31 14:41:15 +02001865 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
1866 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
1867 " check build settings using 'haproxy -vv'.\n\n",
1868 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001869 exit(1);
1870 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02001871 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1872 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02001873 }
1874
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02001875 if (!global.node)
1876 global.node = strdup(hostname);
1877
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01001878 if (!hlua_post_init())
1879 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01001880
Maxime de Roucy0f503922016-05-13 23:52:55 +02001881 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001882}
1883
Simon Horman6fb82592011-07-15 13:14:11 +09001884static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09001885{
Simon Hormanac821422011-07-15 13:14:09 +09001886 struct acl_term_suite *suite, *suiteb;
1887 struct acl_term *term, *termb;
1888
Simon Horman6fb82592011-07-15 13:14:11 +09001889 if (!cond)
1890 return;
1891
1892 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
1893 list_for_each_entry_safe(term, termb, &suite->terms, list) {
1894 LIST_DEL(&term->list);
1895 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09001896 }
Simon Horman6fb82592011-07-15 13:14:11 +09001897 LIST_DEL(&suite->list);
1898 free(suite);
1899 }
1900
1901 free(cond);
1902}
1903
1904static void deinit_tcp_rules(struct list *rules)
1905{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02001906 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09001907
1908 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09001909 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09001910 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09001911 free(trule);
1912 }
1913}
1914
Simon Horman6fb82592011-07-15 13:14:11 +09001915static void deinit_stick_rules(struct list *rules)
1916{
1917 struct sticking_rule *rule, *ruleb;
1918
1919 list_for_each_entry_safe(rule, ruleb, rules, list) {
1920 LIST_DEL(&rule->list);
1921 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02001922 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09001923 free(rule);
1924 }
1925}
1926
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001927void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001928{
Willy Tarreau4d2d0982007-05-14 00:39:29 +02001929 struct proxy *p = proxy, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001930 struct cap_hdr *h,*h_next;
1931 struct server *s,*s_next;
1932 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001933 struct acl_cond *cond, *condb;
1934 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02001935 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001936 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02001937 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02001938 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001939 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01001940 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001941 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02001942 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01001943 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02001944 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01001945 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01001946 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001947 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001948
Willy Tarreau24f4efa2010-08-27 17:56:48 +02001949 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001950 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02001951 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02001952 free(p->id);
1953 free(p->check_req);
1954 free(p->cookie_name);
1955 free(p->cookie_domain);
1956 free(p->url_param_name);
1957 free(p->capture_name);
1958 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09001959 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02001960 if (p->conf.logformat_string != default_http_log_format &&
1961 p->conf.logformat_string != default_tcp_log_format &&
1962 p->conf.logformat_string != clf_http_log_format)
1963 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02001964
Willy Tarreau62a61232013-04-12 18:13:46 +02001965 free(p->conf.lfs_file);
1966 free(p->conf.uniqueid_format_string);
1967 free(p->conf.uif_file);
Godbachaf1a75d2013-10-02 17:10:11 +08001968 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001969
Dragan Dosen0b85ece2015-09-25 19:17:44 +02001970 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
1971 free(p->conf.logformat_sd_string);
1972 free(p->conf.lfsd_file);
1973
Willy Tarreaua534fea2008-08-03 12:19:50 +02001974 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02001975 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001976
Willy Tarreauf4f04122010-01-28 18:10:50 +01001977 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
1978 LIST_DEL(&cwl->list);
1979 free(cwl->s);
1980 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001981 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001982
Willy Tarreauf4f04122010-01-28 18:10:50 +01001983 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
1984 LIST_DEL(&cwl->list);
1985 free(cwl->s);
1986 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01001987 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001988
Willy Tarreaub80c2302007-11-30 20:51:32 +01001989 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
1990 LIST_DEL(&cond->list);
1991 prune_acl_cond(cond);
1992 free(cond);
1993 }
1994
Willy Tarreau0fc45a72007-06-17 00:36:03 +02001995 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001996 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02001997 regex_free(exp->preg);
1998 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02001999 }
2000
Willy Tarreau98d04852015-05-26 12:18:29 +02002001 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002002 expb = exp;
2003 exp = exp->next;
2004 free(expb);
2005 }
2006
2007 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002008 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002009 regex_free(exp->preg);
2010 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002011 }
2012
Willy Tarreau98d04852015-05-26 12:18:29 +02002013 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002014 expb = exp;
2015 exp = exp->next;
2016 free(expb);
2017 }
2018
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002019 /* build a list of unique uri_auths */
2020 if (!ua)
2021 ua = p->uri_auth;
2022 else {
2023 /* check if p->uri_auth is unique */
2024 for (uap = ua; uap; uap=uap->next)
2025 if (uap == p->uri_auth)
2026 break;
2027
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002028 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002029 /* add it, if it is */
2030 p->uri_auth->next = ua;
2031 ua = p->uri_auth;
2032 }
2033 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002034
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002035 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2036 LIST_DEL(&acl->list);
2037 prune_acl(acl);
2038 free(acl);
2039 }
2040
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002041 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2042 LIST_DEL(&srule->list);
2043 prune_acl_cond(srule->cond);
2044 free(srule->cond);
2045 free(srule);
2046 }
2047
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002048 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2049 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002050 if (rule->cond) {
2051 prune_acl_cond(rule->cond);
2052 free(rule->cond);
Thierry FOURNIER / OZON.IO4ed1c952016-11-24 23:57:54 +01002053 free(rule->file);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002054 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002055 free(rule);
2056 }
2057
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002058 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2059 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002060 if (rdr->cond) {
2061 prune_acl_cond(rdr->cond);
2062 free(rdr->cond);
2063 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002064 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002065 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2066 LIST_DEL(&lf->list);
2067 free(lf);
2068 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002069 free(rdr);
2070 }
2071
William Lallemand0f99e342011-10-12 17:50:54 +02002072 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2073 LIST_DEL(&log->list);
2074 free(log);
2075 }
2076
William Lallemand723b73a2012-02-08 16:37:49 +01002077 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2078 LIST_DEL(&lf->list);
2079 free(lf);
2080 }
2081
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002082 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2083 LIST_DEL(&lf->list);
2084 free(lf);
2085 }
2086
Simon Hormanac821422011-07-15 13:14:09 +09002087 deinit_tcp_rules(&p->tcp_req.inspect_rules);
2088 deinit_tcp_rules(&p->tcp_req.l4_rules);
2089
Simon Horman6fb82592011-07-15 13:14:11 +09002090 deinit_stick_rules(&p->storersp_rules);
2091 deinit_stick_rules(&p->sticking_rules);
2092
Willy Tarreaubaaee002006-06-26 02:48:02 +02002093 h = p->req_cap;
2094 while (h) {
2095 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002096 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02002097 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002098 free(h);
2099 h = h_next;
2100 }/* end while(h) */
2101
2102 h = p->rsp_cap;
2103 while (h) {
2104 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002105 free(h->name);
Willy Tarreaucf7f3202007-05-13 22:46:04 +02002106 pool_destroy2(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002107 free(h);
2108 h = h_next;
2109 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002110
Willy Tarreaubaaee002006-06-26 02:48:02 +02002111 s = p->srv;
2112 while (s) {
2113 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002114
Willy Tarreau5b3a2022012-09-28 15:01:02 +02002115 if (s->check.task) {
2116 task_delete(s->check.task);
2117 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002118 }
Simon Hormand60d6912013-11-25 10:46:36 +09002119 if (s->agent.task) {
2120 task_delete(s->agent.task);
2121 task_free(s->agent.task);
2122 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002123
Willy Tarreau2e993902011-10-31 11:53:20 +01002124 if (s->warmup) {
2125 task_delete(s->warmup);
2126 task_free(s->warmup);
2127 }
2128
Willy Tarreaua534fea2008-08-03 12:19:50 +02002129 free(s->id);
2130 free(s->cookie);
Willy Tarreau1ae1b7b2012-09-28 15:28:30 +02002131 free(s->check.bi);
2132 free(s->check.bo);
Simon Hormand60d6912013-11-25 10:46:36 +09002133 free(s->agent.bi);
2134 free(s->agent.bo);
James Brown55f9ff12015-10-21 18:19:05 -07002135 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002136 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002137 free((char*)s->conf.file);
Willy Tarreau17d45382016-12-22 21:16:08 +01002138
2139 if (s->use_ssl || s->check.use_ssl) {
2140 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2141 xprt_get(XPRT_SSL)->destroy_srv(s);
2142 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002143 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002144 free(s);
2145 s = s_next;
2146 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002147
Willy Tarreau4348fad2012-09-20 16:48:07 +02002148 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002149 /*
2150 * Zombie proxy, the listener just pretend to be up
2151 * because they still hold an opened fd.
2152 * Close it and give the listener its real state.
2153 */
2154 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2155 close(l->fd);
2156 l->state = LI_INIT;
2157 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002158 unbind_listener(l);
2159 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002160 LIST_DEL(&l->by_fe);
2161 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002162 free(l->name);
2163 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002164 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002165 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002166
Willy Tarreau4348fad2012-09-20 16:48:07 +02002167 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002168 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002169 if (bind_conf->xprt->destroy_bind_conf)
2170 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002171 free(bind_conf->file);
2172 free(bind_conf->arg);
2173 LIST_DEL(&bind_conf->by_fe);
2174 free(bind_conf);
2175 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002176
Christopher Fauletd7c91962015-04-30 11:48:27 +02002177 flt_deinit(p);
2178
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002179 free(p->desc);
2180 free(p->fwdfor_hdr_name);
2181
Willy Tarreauff011f22011-01-06 17:51:27 +01002182 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002183 free_http_res_rules(&p->http_res_rules);
Willy Tarreau918ff602011-07-25 16:33:49 +02002184 free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002185
Willy Tarreaucf7f3202007-05-13 22:46:04 +02002186 pool_destroy2(p->req_cap_pool);
2187 pool_destroy2(p->rsp_cap_pool);
Simon Hormanb08584a2011-07-15 13:14:10 +09002188 pool_destroy2(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002189
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002190 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002191 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002192 HA_SPIN_DESTROY(&p0->lbprm.lock);
2193 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002194 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002195 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002196
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002197 while (ua) {
2198 uap = ua;
2199 ua = ua->next;
2200
Willy Tarreaua534fea2008-08-03 12:19:50 +02002201 free(uap->uri_prefix);
2202 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002203 free(uap->node);
2204 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002205
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002206 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002207 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002208
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002209 free(uap);
2210 }
2211
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002212 userlist_free(userlist);
2213
David Carlier834cb2e2015-09-25 12:02:25 +01002214 cfg_unregister_sections();
2215
Christopher Faulet0132d062017-07-26 15:33:35 +02002216 deinit_log_buffers();
Christopher Faulet748919a2017-07-26 14:59:46 +02002217 deinit_trash_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002218
Willy Tarreaudd815982007-10-16 12:25:14 +02002219 protocol_unbind_all();
2220
Willy Tarreau05554e62016-12-21 20:46:26 +01002221 list_for_each_entry(pdf, &post_deinit_list, list)
2222 pdf->fct();
2223
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002224 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002225 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002226 free(global.chroot); global.chroot = NULL;
2227 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002228 free(global.node); global.node = NULL;
2229 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002230 free(oldpids); oldpids = NULL;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002231 free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002232
William Lallemand0f99e342011-10-12 17:50:54 +02002233 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2234 LIST_DEL(&log->list);
2235 free(log);
2236 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002237 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002238 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002239 LIST_DEL(&wl->list);
2240 free(wl);
2241 }
2242
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002243 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2244 if (bol->must_free)
2245 free((void *)bol->str);
2246 LIST_DEL(&bol->list);
2247 free(bol);
2248 }
2249
Christopher Fauletff2613e2016-11-09 11:36:17 +01002250 vars_prune(&global.vars, NULL, NULL);
2251
Christopher Fauletad405f12017-08-29 15:30:11 +02002252 deinit_buffer();
2253
Willy Tarreau87b09662015-04-03 00:22:06 +02002254 pool_destroy2(pool2_stream);
Willy Tarreaufeb76402015-04-03 14:10:06 +02002255 pool_destroy2(pool2_session);
Willy Tarreauf2943dc2012-10-26 20:10:28 +02002256 pool_destroy2(pool2_connection);
Olivier Houcharde2b40b92017-09-13 18:30:23 +02002257 pool_destroy2(pool2_connstream);
Willy Tarreau332f8bf2007-05-13 21:36:56 +02002258 pool_destroy2(pool2_requri);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02002259 pool_destroy2(pool2_task);
Willy Tarreau086b3b42007-05-13 21:45:51 +02002260 pool_destroy2(pool2_capture);
Willy Tarreaue4d7e552007-05-13 20:19:55 +02002261 pool_destroy2(pool2_pendconn);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002262 pool_destroy2(pool2_sig_handlers);
Willy Tarreau34eb6712011-10-24 18:15:04 +02002263 pool_destroy2(pool2_hdr_idx);
Willy Tarreau63986c72015-04-03 22:55:33 +02002264 pool_destroy2(pool2_http_txn);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002265 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002266} /* end deinit() */
2267
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002268void mworker_pipe_handler(int fd)
2269{
2270 char c;
2271
2272 while (read(fd, &c, 1) == -1) {
2273 if (errno == EINTR)
2274 continue;
2275 if (errno == EAGAIN) {
2276 fd_cant_recv(fd);
2277 return;
2278 }
2279 break;
2280 }
2281
2282 deinit();
2283 exit(EXIT_FAILURE);
2284 return;
2285}
2286
2287void mworker_pipe_register(int pipefd[2])
2288{
2289 close(mworker_pipe[1]); /* close the write end of the master pipe in the children */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002290
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002291 fcntl(mworker_pipe[0], F_SETFL, O_NONBLOCK);
2292 fdtab[mworker_pipe[0]].owner = mworker_pipe;
2293 fdtab[mworker_pipe[0]].iocb = mworker_pipe_handler;
Christopher Faulet36716a72017-05-30 11:07:16 +02002294 fd_insert(mworker_pipe[0], MAX_THREADS_MASK);
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002295 fd_want_recv(mworker_pipe[0]);
2296}
Christopher Fauletdc628a32017-10-19 11:59:44 +02002297
2298static void sync_poll_loop()
2299{
2300 if (THREAD_NO_SYNC())
2301 return;
2302
2303 THREAD_ENTER_SYNC();
2304
2305 if (!THREAD_NEED_SYNC())
2306 goto exit;
2307
2308 /* *** { */
2309 /* Put here all sync functions */
2310
Christopher Faulet5d42e092017-10-16 12:00:40 +02002311 servers_update_status(); /* Commit server status changes */
Christopher Fauletdc628a32017-10-19 11:59:44 +02002312
2313 /* *** } */
2314 exit:
2315 THREAD_EXIT_SYNC();
2316}
2317
Willy Tarreau918ff602011-07-25 16:33:49 +02002318/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002319static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002320{
Willy Tarreau0c303ee2008-07-07 00:09:58 +02002321 int next;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002322
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002323 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002324 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002325 /* Process a few tasks */
2326 process_runnable_tasks();
2327
Willy Tarreau29857942009-05-10 09:01:21 +02002328 /* check if we caught some signals and process them */
2329 signal_process_queue();
2330
Willy Tarreau58b458d2008-06-29 22:40:23 +02002331 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002332 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002333
Willy Tarreauaf7ad002010-08-31 15:39:26 +02002334 /* stop when there's nothing left to do */
2335 if (jobs == 0)
Willy Tarreau4f60f162007-04-08 16:39:58 +02002336 break;
2337
Willy Tarreau10146c92015-04-13 20:44:19 +02002338 /* expire immediately if events are pending */
Christopher Faulet71630562017-11-14 11:30:47 +01002339 if (fd_cache_num || (active_tasks_mask & tid_bit) || signal_queue_len || (active_applets_mask & tid_bit))
Willy Tarreau10146c92015-04-13 20:44:19 +02002340 next = now_ms;
2341
Willy Tarreau58b458d2008-06-29 22:40:23 +02002342 /* The poller will ensure it returns around <next> */
Willy Tarreau0c303ee2008-07-07 00:09:58 +02002343 cur_poller.poll(&cur_poller, next);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002344 fd_process_cached_events();
Willy Tarreau3c595ac2015-04-19 09:59:31 +02002345 applet_run_active();
Emeric Brun64cc49c2017-10-03 14:46:45 +02002346
Christopher Fauletdc628a32017-10-19 11:59:44 +02002347
2348 /* Synchronize all polling loops */
2349 sync_poll_loop();
2350
Willy Tarreau4f60f162007-04-08 16:39:58 +02002351 }
2352}
2353
Christopher Faulet1d17c102017-08-29 15:38:48 +02002354static void *run_thread_poll_loop(void *data)
2355{
2356 struct per_thread_init_fct *ptif;
2357 struct per_thread_deinit_fct *ptdf;
2358
2359 tid = *((unsigned int *)data);
2360 tid_bit = (1UL << tid);
2361 tv_update_date(-1,-1);
2362
2363 list_for_each_entry(ptif, &per_thread_init_list, list) {
2364 if (!ptif->fct()) {
2365 Alert("failed to initialize thread %u.\n", tid);
2366 exit(1);
2367 }
2368 }
2369
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002370 if (global.mode & MODE_MWORKER)
2371 mworker_pipe_register(mworker_pipe);
2372
2373 protocol_enable_all();
Christopher Fauletdc628a32017-10-19 11:59:44 +02002374 THREAD_SYNC_ENABLE();
Christopher Faulet1d17c102017-08-29 15:38:48 +02002375 run_poll_loop();
2376
2377 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2378 ptdf->fct();
2379
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002380#ifdef USE_THREAD
2381 if (tid > 0)
2382 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002383#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002384 return NULL;
2385}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002386
Willy Tarreaue9b26022011-08-01 20:57:55 +02002387/* This is the global management task for listeners. It enables listeners waiting
2388 * for global resources when there are enough free resource, or at least once in
2389 * a while. It is designed to be called as a task.
2390 */
2391static struct task *manage_global_listener_queue(struct task *t)
2392{
2393 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002394 /* queue is empty, nothing to do */
2395 if (LIST_ISEMPTY(&global_listener_queue))
2396 goto out;
2397
2398 /* If there are still too many concurrent connections, let's wait for
2399 * some of them to go away. We don't need to re-arm the timer because
2400 * each of them will scan the queue anyway.
2401 */
2402 if (unlikely(actconn >= global.maxconn))
2403 goto out;
2404
2405 /* We should periodically try to enable listeners waiting for a global
2406 * resource here, because it is possible, though very unlikely, that
2407 * they have been blocked by a temporary lack of global resource such
2408 * as a file descriptor or memory and that the temporary condition has
2409 * disappeared.
2410 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002411 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002412
2413 out:
2414 t->expire = next;
2415 task_queue(t);
2416 return t;
2417}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002418
Willy Tarreaubaaee002006-06-26 02:48:02 +02002419int main(int argc, char **argv)
2420{
2421 int err, retry;
2422 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002423 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002424 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002425
Emeric Bruncf20bf12010-10-22 16:06:11 +02002426 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002427 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2428 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2429 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002430 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002431
Willy Tarreaue437c442010-03-17 18:02:46 +01002432 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2433 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2434 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002435 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002436 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002437
Willy Tarreaudc23a922011-02-16 11:10:36 +01002438 /* ulimits */
2439 if (!global.rlimit_nofile)
2440 global.rlimit_nofile = global.maxsock;
2441
2442 if (global.rlimit_nofile) {
2443 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
2444 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002445 /* try to set it to the max possible at least */
2446 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002447 limit.rlim_cur = limit.rlim_max;
2448 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2449 getrlimit(RLIMIT_NOFILE, &limit);
2450
Willy Tarreauef635472016-06-21 11:48:18 +02002451 Warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n", argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
2452 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002453 }
2454 }
2455
2456 if (global.rlimit_memmax) {
2457 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002458 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002459#ifdef RLIMIT_AS
2460 if (setrlimit(RLIMIT_AS, &limit) == -1) {
2461 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2462 argv[0], global.rlimit_memmax);
2463 }
2464#else
2465 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
2466 Warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2467 argv[0], global.rlimit_memmax);
2468 }
2469#endif
2470 }
2471
Olivier Houchardf73629d2017-04-05 22:33:04 +02002472 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002473 if (strcmp("/dev/null", old_unixsocket) != 0) {
2474 if (get_old_sockets(old_unixsocket) != 0) {
2475 Alert("Failed to get the sockets from the old process!\n");
2476 if (!(global.mode & MODE_MWORKER))
2477 exit(1);
2478 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002479 }
2480 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002481 get_cur_unixsocket();
2482
Willy Tarreaubaaee002006-06-26 02:48:02 +02002483 /* We will loop at most 100 times with 10 ms delay each time.
2484 * That's at most 1 second. We only send a signal to old pids
2485 * if we cannot grab at least one port.
2486 */
2487 retry = MAX_START_RETRIES;
2488 err = ERR_NONE;
2489 while (retry >= 0) {
2490 struct timeval w;
2491 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002492 /* exit the loop on no error or fatal error */
2493 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002494 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002495 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002496 break;
2497
2498 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2499 * listening sockets. So on those platforms, it would be wiser to
2500 * simply send SIGUSR1, which will not be undoable.
2501 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002502 if (tell_old_pids(SIGTTOU) == 0) {
2503 /* no need to wait if we can't contact old pids */
2504 retry = 0;
2505 continue;
2506 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002507 /* give some time to old processes to stop listening */
2508 w.tv_sec = 0;
2509 w.tv_usec = 10*1000;
2510 select(0, NULL, NULL, NULL, &w);
2511 retry--;
2512 }
2513
2514 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002515 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002516 if (retry != MAX_START_RETRIES && nb_oldpids) {
2517 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002518 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002519 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002520 exit(1);
2521 }
2522
2523 if (listeners == 0) {
Willy Tarreauf2ee0162015-08-09 11:01:51 +02002524 Alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002525 /* Note: we don't have to send anything to the old pids because we
2526 * never stopped them. */
2527 exit(1);
2528 }
2529
Emeric Bruncf20bf12010-10-22 16:06:11 +02002530 err = protocol_bind_all(errmsg, sizeof(errmsg));
2531 if ((err & ~ERR_WARN) != ERR_NONE) {
2532 if ((err & ERR_ALERT) || (err & ERR_WARN))
2533 Alert("[%s.main()] %s.\n", argv[0], errmsg);
2534
Willy Tarreaudd815982007-10-16 12:25:14 +02002535 Alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
2536 protocol_unbind_all(); /* cleanup everything we can */
2537 if (nb_oldpids)
2538 tell_old_pids(SIGTTIN);
2539 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002540 } else if (err & ERR_WARN) {
2541 Alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002542 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002543 /* Ok, all listener should now be bound, close any leftover sockets
2544 * the previous process gave us, we don't need them anymore
2545 */
2546 while (xfer_sock_list != NULL) {
2547 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2548 close(xfer_sock_list->fd);
2549 free(xfer_sock_list->iface);
2550 free(xfer_sock_list->namespace);
2551 free(xfer_sock_list);
2552 xfer_sock_list = tmpxfer;
2553 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002554
Willy Tarreaubaaee002006-06-26 02:48:02 +02002555 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002556 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2557 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002558
Willy Tarreaubaaee002006-06-26 02:48:02 +02002559 /* MODE_QUIET can inhibit alerts and warnings below this line */
2560
Willy Tarreaubaaee002006-06-26 02:48:02 +02002561 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2562 /* detach from the tty */
2563 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002564 }
2565
2566 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002567 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002568 unlink(global.pidfile);
2569 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2570 if (pidfd < 0) {
2571 Alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
2572 if (nb_oldpids)
2573 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002574 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002575 exit(1);
2576 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002577 }
2578
Willy Tarreaub38651a2007-03-24 17:24:39 +01002579 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
2580 Alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002581 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002582 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002583 exit(1);
2584 }
2585
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002586 /* If the user is not root, we'll still let him try the configuration
2587 * but we inform him that unexpected behaviour may occur.
2588 */
2589 if ((global.last_checks & LSTCHK_NETADM) && getuid())
2590 Warning("[%s.main()] Some options which require full privileges"
2591 " might not work well.\n"
2592 "", argv[0]);
2593
William Lallemand095ba4c2017-06-01 17:38:50 +02002594 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2595
2596 /* chroot if needed */
2597 if (global.chroot != NULL) {
2598 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
2599 Alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
2600 if (nb_oldpids)
2601 tell_old_pids(SIGTTIN);
2602 protocol_unbind_all();
2603 exit(1);
2604 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002605 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002606 }
2607
Willy Tarreaubaaee002006-06-26 02:48:02 +02002608 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02002609 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002610
William Lallemand8a361b52017-06-20 11:20:33 +02002611 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2612 nb_oldpids = 0;
2613 free(oldpids);
2614 oldpids = NULL;
2615 }
2616
2617
Willy Tarreaubaaee002006-06-26 02:48:02 +02002618 /* Note that any error at this stage will be fatal because we will not
2619 * be able to restart the old pids.
2620 */
2621
William Lallemand095ba4c2017-06-01 17:38:50 +02002622 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2623 /* setgid / setuid */
2624 if (global.gid) {
2625 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2626 Warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2627 " without 'uid'/'user' is generally useless.\n", argv[0]);
2628
2629 if (setgid(global.gid) == -1) {
2630 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
2631 protocol_unbind_all();
2632 exit(1);
2633 }
2634 }
Michael Schererab012dd2013-01-12 18:35:19 +01002635
William Lallemand095ba4c2017-06-01 17:38:50 +02002636 if (global.uid && setuid(global.uid) == -1) {
2637 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002638 protocol_unbind_all();
2639 exit(1);
2640 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002641 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002642 /* check ulimits */
2643 limit.rlim_cur = limit.rlim_max = 0;
2644 getrlimit(RLIMIT_NOFILE, &limit);
2645 if (limit.rlim_cur < global.maxsock) {
2646 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",
Willy Tarreau1772ece2009-04-03 14:49:12 +02002647 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002648 }
2649
William Lallemand095ba4c2017-06-01 17:38:50 +02002650 if (global.mode & (MODE_DAEMON | MODE_MWORKER)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002651 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002652 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002653 int ret = 0;
2654 int proc;
2655
William Lallemand73b85e72017-06-01 17:38:51 +02002656 children = calloc(global.nbproc, sizeof(int));
William Lallemand095ba4c2017-06-01 17:38:50 +02002657 /*
2658 * if daemon + mworker: must fork here to let a master
2659 * process live in background before forking children
2660 */
William Lallemand73b85e72017-06-01 17:38:51 +02002661
2662 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2663 && (global.mode & MODE_MWORKER)
2664 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002665 ret = fork();
2666 if (ret < 0) {
2667 Alert("[%s.main()] Cannot fork.\n", argv[0]);
2668 protocol_unbind_all();
2669 exit(1); /* there has been an error */
2670 }
2671 /* parent leave to daemonize */
2672 if (ret > 0)
2673 exit(0);
2674 }
William Lallemande20b6a62017-06-01 17:38:55 +02002675
2676 if (global.mode & MODE_MWORKER) {
2677 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2678 char *msg = NULL;
2679 /* master pipe to ensure the master is still alive */
2680 ret = pipe(mworker_pipe);
2681 if (ret < 0) {
2682 Warning("[%s.main()] Cannot create master pipe.\n", argv[0]);
2683 } else {
2684 memprintf(&msg, "%d", mworker_pipe[0]);
2685 setenv("HAPROXY_MWORKER_PIPE_RD", msg, 1);
2686 memprintf(&msg, "%d", mworker_pipe[1]);
2687 setenv("HAPROXY_MWORKER_PIPE_WR", msg, 1);
2688 free(msg);
2689 }
2690 } else {
2691 mworker_pipe[0] = atol(getenv("HAPROXY_MWORKER_PIPE_RD"));
2692 mworker_pipe[1] = atol(getenv("HAPROXY_MWORKER_PIPE_WR"));
2693 if (mworker_pipe[0] <= 0 || mworker_pipe[1] <= 0) {
2694 Warning("[%s.main()] Cannot get master pipe FDs.\n", argv[0]);
2695 }
2696 }
2697 }
2698
William Lallemanddeed7802017-11-06 11:00:04 +01002699 /* if in master-worker mode, write the PID of the father */
2700 if (global.mode & MODE_MWORKER) {
2701 char pidstr[100];
2702 snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
2703 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
2704 }
2705
Willy Tarreaubaaee002006-06-26 02:48:02 +02002706 /* the father launches the required number of processes */
2707 for (proc = 0; proc < global.nbproc; proc++) {
2708 ret = fork();
2709 if (ret < 0) {
2710 Alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002711 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02002712 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002713 }
2714 else if (ret == 0) /* child breaks here */
2715 break;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01002716 children[proc] = ret;
William Lallemand92159b22017-11-06 11:16:12 +01002717 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
Willy Tarreau269ab312012-09-05 08:02:48 +02002718 char pidstr[100];
2719 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002720 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002721 }
Willy Tarreaudcd47712007-11-04 23:35:08 +01002722 relative_pid++; /* each child will get a different one */
Willy Tarreau387bd4f2017-11-10 19:08:14 +01002723 pid_bit <<= 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002724 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002725
2726#ifdef USE_CPU_AFFINITY
2727 if (proc < global.nbproc && /* child */
Willy Tarreaue7597492015-04-20 11:36:57 +02002728 proc < LONGBITS && /* only the first 32/64 processes may be pinned */
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002729 global.cpu_map[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002730#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02002731 {
2732 cpuset_t cpuset;
2733 int i;
2734 unsigned long cpu_map = global.cpu_map[proc];
2735
2736 CPU_ZERO(&cpuset);
2737 while ((i = ffsl(cpu_map)) > 0) {
2738 CPU_SET(i - 1, &cpuset);
2739 cpu_map &= ~(1 << (i - 1));
2740 }
2741 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
2742 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002743#else
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002744 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map[proc]);
2745#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002746#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02002747 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02002748 if (pidfd >= 0) {
2749 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
2750 close(pidfd);
2751 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02002752
2753 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02002754 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002755
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002756 if (proc == global.nbproc) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002757 if (global.mode & MODE_MWORKER) {
William Lallemand75ea0a02017-11-15 19:02:58 +01002758 mworker_cleanlisteners();
2759 deinit_pollers();
William Lallemand73b85e72017-06-01 17:38:51 +02002760 mworker_wait();
William Lallemand1499b9b2017-06-07 15:04:47 +02002761 /* should never get there */
2762 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002763 }
William Lallemandcf4e4962017-06-08 19:05:48 +02002764#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00002765 ssl_free_dh();
2766#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02002767 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002768 }
2769
William Lallemandcb11fd22017-06-01 17:38:52 +02002770 /* child must never use the atexit function */
2771 atexit_flag = 0;
2772
William Lallemand095ba4c2017-06-01 17:38:50 +02002773 /* Must chroot and setgid/setuid in the children */
2774 /* chroot if needed */
2775 if (global.chroot != NULL) {
2776 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
2777 Alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
2778 if (nb_oldpids)
2779 tell_old_pids(SIGTTIN);
2780 protocol_unbind_all();
2781 exit(1);
2782 }
2783 }
2784
2785 free(global.chroot);
2786 global.chroot = NULL;
2787
2788 /* setgid / setuid */
2789 if (global.gid) {
2790 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
2791 Warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2792 " without 'uid'/'user' is generally useless.\n", argv[0]);
2793
2794 if (setgid(global.gid) == -1) {
2795 Alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
2796 protocol_unbind_all();
2797 exit(1);
2798 }
2799 }
2800
2801 if (global.uid && setuid(global.uid) == -1) {
2802 Alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
2803 protocol_unbind_all();
2804 exit(1);
2805 }
2806
William Lallemand7f80eb22017-05-26 18:19:55 +02002807 /* pass through every cli socket, and check if it's bound to
2808 * the current process and if it exposes listeners sockets.
2809 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
2810 * */
2811
2812 if (global.stats_fe) {
2813 struct bind_conf *bind_conf;
2814
2815 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
2816 if (bind_conf->level & ACCESS_FD_LISTENERS) {
2817 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
2818 global.tune.options |= GTUNE_SOCKET_TRANSFER;
2819 break;
2820 }
2821 }
2822 }
2823 }
2824
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002825 /* we might have to unbind some proxies from some processes */
2826 px = proxy;
2827 while (px != NULL) {
2828 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002829 if (!(px->bind_proc & (1UL << proc))) {
2830 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
2831 zombify_proxy(px);
2832 else
2833 stop_proxy(px);
2834 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002835 }
2836 px = px->next;
2837 }
2838
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002839 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02002840 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002841 if (!curpeers->peers_fe)
2842 continue;
2843
2844 if (curpeers->peers_fe->bind_proc & (1UL << proc))
2845 continue;
2846
2847 stop_proxy(curpeers->peers_fe);
2848 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02002849 signal_unregister_handler(curpeers->sighandler);
2850 task_delete(curpeers->sync_task);
2851 task_free(curpeers->sync_task);
2852 curpeers->sync_task = NULL;
2853 task_free(curpeers->peers_fe->task);
2854 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002855 curpeers->peers_fe = NULL;
2856 }
2857
Willy Tarreaubaaee002006-06-26 02:48:02 +02002858 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
2859 * that we can detach from the TTY. We MUST NOT do it in other cases since
2860 * it would have already be done, and 0-2 would have been affected to listening
2861 * sockets
2862 */
Willy Tarreau106cb762008-11-16 07:40:34 +01002863 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002864 /* detach from the tty */
2865 fclose(stdin); fclose(stdout); fclose(stderr);
Willy Tarreau106cb762008-11-16 07:40:34 +01002866 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002867 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2868 }
2869 pid = getpid(); /* update child's pid */
2870 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02002871 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002872 }
2873
Christopher Faulete3a5e352017-10-24 13:53:54 +02002874 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002875 /*
2876 * That's it : the central polling loop. Run until we stop.
2877 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02002878#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002879 {
Christopher Faulet1d17c102017-08-29 15:38:48 +02002880 unsigned int *tids = calloc(global.nbthread, sizeof(unsigned int));
2881 pthread_t *threads = calloc(global.nbthread, sizeof(pthread_t));
2882 int i;
2883
Christopher Fauletd7bddda2017-10-31 17:30:12 +01002884 THREAD_SYNC_INIT((1UL << global.nbthread) - 1);
2885
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002886 /* Init tids array */
2887 for (i = 0; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02002888 tids[i] = i;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002889
2890 /* Create nbthread-1 thread. The first thread is the current process */
2891 threads[0] = pthread_self();
2892 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02002893 pthread_create(&threads[i], NULL, &run_thread_poll_loop, &tids[i]);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002894
Christopher Faulet62519022017-10-16 15:49:32 +02002895#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002896 /* Now the CPU affinity for all threads */
2897 for (i = 0; i < global.nbthread; i++) {
Christopher Faulet62519022017-10-16 15:49:32 +02002898 if (global.cpu_map[relative_pid-1])
2899 global.thread_map[relative_pid-1][i] &= global.cpu_map[relative_pid-1];
2900
2901 if (i < LONGBITS && /* only the first 32/64 threads may be pinned */
2902 global.thread_map[relative_pid-1][i]) /* only do this if the thread has a THREAD map */
2903 pthread_setaffinity_np(threads[i],
2904 sizeof(unsigned long), (void *)&global.thread_map[relative_pid-1][i]);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002905 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002906#endif /* !USE_CPU_AFFINITY */
2907
2908 /* Finally, start the poll loop for the first thread */
2909 run_thread_poll_loop(&tids[0]);
2910
2911 /* Wait the end of other threads */
2912 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02002913 pthread_join(threads[i], NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002914
Christopher Faulet1d17c102017-08-29 15:38:48 +02002915 free(tids);
2916 free(threads);
2917
Christopher Fauletb79a94c2017-05-30 15:34:30 +02002918#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
2919 show_lock_stats();
2920#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02002921 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002922#else /* ! USE_THREAD */
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002923
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002924 run_thread_poll_loop((int []){0});
Christopher Faulet62519022017-10-16 15:49:32 +02002925
Christopher Faulet62519022017-10-16 15:49:32 +02002926#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02002927
2928 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002929 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02002930
Willy Tarreaubaaee002006-06-26 02:48:02 +02002931 exit(0);
2932}
2933
2934
2935/*
2936 * Local variables:
2937 * c-indent-level: 8
2938 * c-basic-offset: 8
2939 * End:
2940 */