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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 * HA-Proxy : High Availability-enabled HTTP/TCP proxy
Willy Tarreau65e94d12018-08-02 18:12:50 +02003 * Copyright 2000-2018 Willy Tarreau <willy@haproxy.org>.
Willy Tarreaubaaee002006-06-26 02:48:02 +02004 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
9 *
Lukas Tribus23953682017-04-28 13:24:30 +000010 * Please refer to RFC7230 - RFC7235 informations about HTTP protocol, and
11 * RFC6265 for informations about cookies usage. More generally, the IETF HTTP
Willy Tarreaubaaee002006-06-26 02:48:02 +020012 * Working Group's web site should be consulted for protocol related changes :
13 *
14 * http://ftp.ics.uci.edu/pub/ietf/http/
15 *
16 * Pending bugs (may be not fixed because never reproduced) :
17 * - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
18 * the proxy to terminate (no core) if the client breaks the connection during
19 * the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
20 * the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
21 * related to missing setsid() (fixed in 1.1.15)
22 * - a proxy with an invalid config will prevent the startup even if disabled.
23 *
24 * ChangeLog has moved to the CHANGELOG file.
25 *
Willy Tarreaubaaee002006-06-26 02:48:02 +020026 */
27
David Carlier7ece0962015-12-08 21:43:09 +000028#define _GNU_SOURCE
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <string.h>
33#include <ctype.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020034#include <dirent.h>
Maxime de Roucy379d9c72016-05-13 23:52:56 +020035#include <sys/stat.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/tcp.h>
40#include <netinet/in.h>
41#include <arpa/inet.h>
Olivier Houchardf73629d2017-04-05 22:33:04 +020042#include <net/if.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020043#include <netdb.h>
44#include <fcntl.h>
45#include <errno.h>
46#include <signal.h>
47#include <stdarg.h>
48#include <sys/resource.h>
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +010049#include <sys/wait.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020050#include <time.h>
51#include <syslog.h>
Michael Schererab012dd2013-01-12 18:35:19 +010052#include <grp.h>
Willy Tarreaufc6c0322012-11-16 16:12:27 +010053#ifdef USE_CPU_AFFINITY
Willy Tarreaufc6c0322012-11-16 16:12:27 +010054#include <sched.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020055#ifdef __FreeBSD__
56#include <sys/param.h>
57#include <sys/cpuset.h>
David Carlier6d5c8412017-11-29 11:02:32 +000058#include <pthread_np.h>
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +020059#endif
Willy Tarreaufc6c0322012-11-16 16:12:27 +010060#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020061
62#ifdef DEBUG_FULL
63#include <assert.h>
64#endif
Tim Duesterhusd6942c82017-11-20 15:58:35 +010065#if defined(USE_SYSTEMD)
66#include <systemd/sd-daemon.h>
67#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +020068
Willy Tarreau2dd0d472006-06-29 17:53:05 +020069#include <common/base64.h>
70#include <common/cfgparse.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020071#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020072#include <common/compat.h>
73#include <common/config.h>
74#include <common/defaults.h>
Willy Tarreaud740bab2007-10-28 11:14:07 +010075#include <common/errors.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020076#include <common/memory.h>
77#include <common/mini-clist.h>
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +010078#include <common/namespace.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +020079#include <common/regex.h>
80#include <common/standard.h>
81#include <common/time.h>
82#include <common/uri_auth.h>
83#include <common/version.h>
Christopher Fauletbe0faa22017-08-29 15:37:10 +020084#include <common/hathreads.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020085
86#include <types/capture.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020087#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020088#include <types/global.h>
Simon Hormanac821422011-07-15 13:14:09 +090089#include <types/acl.h>
Willy Tarreau3c63fd82011-09-07 18:00:47 +020090#include <types/peers.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020091
Willy Tarreau0fc45a72007-06-17 00:36:03 +020092#include <proto/acl.h>
Willy Tarreau2e845be2012-10-19 19:49:09 +020093#include <proto/arg.h>
Willy Tarreau3c595ac2015-04-19 09:59:31 +020094#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020095#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +020096#include <proto/channel.h>
Willy Tarreauf2943dc2012-10-26 20:10:28 +020097#include <proto/connection.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020098#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +020099#include <proto/filters.h>
Willy Tarreau34eb6712011-10-24 18:15:04 +0200100#include <proto/hdr_idx.h>
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +0100101#include <proto/hlua.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200102#include <proto/listener.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200103#include <proto/log.h>
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +0100104#include <proto/pattern.h>
Willy Tarreaud1d54542012-09-12 22:58:11 +0200105#include <proto/protocol.h>
Willy Tarreau80587432006-12-24 17:47:20 +0100106#include <proto/proto_http.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200107#include <proto/proxy.h>
108#include <proto/queue.h>
109#include <proto/server.h>
Willy Tarreaub1ec8c42015-04-03 13:53:24 +0200110#include <proto/session.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200111#include <proto/stream.h>
Willy Tarreau29857942009-05-10 09:01:21 +0200112#include <proto/signal.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200113#include <proto/task.h>
Baptiste Assmann325137d2015-04-13 23:40:55 +0200114#include <proto/dns.h>
Christopher Fauletff2613e2016-11-09 11:36:17 +0100115#include <proto/vars.h>
Willy Tarreau50bc31d2017-08-16 15:35:19 +0200116#ifdef USE_OPENSSL
Grant Zhang872f9c22017-01-21 01:10:18 +0000117#include <proto/ssl_sock.h>
Willy Tarreau50bc31d2017-08-16 15:35:19 +0200118#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200119
Willy Tarreau477ecd82010-01-03 21:12:30 +0100120/* list of config files */
121static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200122int pid; /* current process id */
Willy Tarreau28156642007-11-26 16:13:36 +0100123int relative_pid = 1; /* process id starting at 1 */
Willy Tarreau387bd4f2017-11-10 19:08:14 +0100124unsigned long pid_bit = 1; /* bit corresponding to the process id */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200125
Olivier Houchard79321b92018-07-26 17:55:11 +0200126volatile unsigned long sleeping_thread_mask; /* Threads that are about to sleep in poll() */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200127/* global options */
128struct global global = {
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100129 .hard_stop_after = TICK_ETERNITY,
Willy Tarreau247a13a2012-11-15 17:38:15 +0100130 .nbproc = 1,
Christopher Fauletbe0faa22017-08-29 15:37:10 +0200131 .nbthread = 1,
William Lallemand5f232402012-04-05 18:02:55 +0200132 .req_count = 0,
William Lallemand0f99e342011-10-12 17:50:54 +0200133 .logsrvs = LIST_HEAD_INIT(global.logsrvs),
William Lallemand9d5f5482012-11-07 16:12:57 +0100134 .maxzlibmem = 0,
William Lallemandd85f9172012-11-09 17:05:39 +0100135 .comp_rate_lim = 0,
Emeric Brun850efd52014-01-29 12:24:34 +0100136 .ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
Emeric Bruned760922010-10-22 17:59:25 +0200137 .unix_bind = {
138 .ux = {
139 .uid = -1,
140 .gid = -1,
141 .mode = 0,
142 }
143 },
Willy Tarreau27a674e2009-08-17 07:23:33 +0200144 .tune = {
145 .bufsize = BUFSIZE,
Willy Tarreau27097842015-09-28 13:53:23 +0200146 .maxrewrite = -1,
Willy Tarreau43961d52010-10-04 20:39:20 +0200147 .chksize = BUFSIZE,
Willy Tarreaua24adf02014-11-27 01:11:56 +0100148 .reserved_bufs = RESERVED_BUFS,
Willy Tarreauf3045d22015-04-29 16:24:50 +0200149 .pattern_cache = DEFAULT_PAT_LRU_SIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200150#ifdef USE_OPENSSL
Emeric Brun46635772012-11-14 11:32:56 +0100151 .sslcachesize = SSLCACHESIZE,
Emeric Brunfc32aca2012-09-03 12:10:29 +0200152#endif
William Lallemandf3747832012-11-09 12:33:10 +0100153 .comp_maxlevel = 1,
Willy Tarreau7e312732014-02-12 16:35:14 +0100154#ifdef DEFAULT_IDLE_TIMER
155 .idle_timer = DEFAULT_IDLE_TIMER,
156#else
157 .idle_timer = 1000, /* 1 second */
158#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200159 },
Emeric Brun76d88952012-10-05 15:47:31 +0200160#ifdef USE_OPENSSL
161#ifdef DEFAULT_MAXSSLCONN
Willy Tarreau403edff2012-09-06 11:58:37 +0200162 .maxsslconn = DEFAULT_MAXSSLCONN,
163#endif
Emeric Brun76d88952012-10-05 15:47:31 +0200164#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200165 /* others NULL OK */
166};
167
Willy Tarreaud80cb4e2018-01-20 19:30:13 +0100168struct activity activity[MAX_THREADS] __attribute__((aligned(64))) = { };
169
Willy Tarreaubaaee002006-06-26 02:48:02 +0200170/*********************************************************************/
171
172int stopping; /* non zero means stopping in progress */
Cyril Bonté203ec5a2017-03-23 22:44:13 +0100173int killed; /* non zero means a hard-stop is triggered */
Willy Tarreauaf7ad002010-08-31 15:39:26 +0200174int jobs = 0; /* number of active jobs (conns, listeners, active tasks, ...) */
Willy Tarreaubaaee002006-06-26 02:48:02 +0200175
176/* Here we store informations about the pids of the processes we may pause
177 * or kill. We will send them a signal every 10 ms until we can bind to all
178 * our ports. With 200 retries, that's about 2 seconds.
179 */
180#define MAX_START_RETRIES 200
Willy Tarreaubaaee002006-06-26 02:48:02 +0200181static int *oldpids = NULL;
182static int oldpids_sig; /* use USR1 or TERM */
183
Olivier Houchardf73629d2017-04-05 22:33:04 +0200184/* Path to the unix socket we use to retrieve listener sockets from the old process */
185static const char *old_unixsocket;
186
William Lallemand85b0bd92017-06-01 17:38:53 +0200187static char *cur_unixsocket = NULL;
188
William Lallemandcb11fd22017-06-01 17:38:52 +0200189int atexit_flag = 0;
190
Willy Tarreaubb545b42010-08-25 12:58:59 +0200191int nb_oldpids = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200192const int zero = 0;
193const int one = 1;
Alexandre Cassen87ea5482007-10-11 20:48:58 +0200194const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
Willy Tarreaubaaee002006-06-26 02:48:02 +0200195
Willy Tarreau1d21e0a2010-03-12 21:58:54 +0100196char hostname[MAX_HOSTNAME_LEN];
Emeric Brun2b920a12010-09-23 18:30:22 +0200197char localpeer[MAX_HOSTNAME_LEN];
Willy Tarreaubaaee002006-06-26 02:48:02 +0200198
Willy Tarreau89efaed2013-12-13 15:14:55 +0100199/* used from everywhere just to drain results we don't want to read and which
200 * recent versions of gcc increasingly and annoyingly complain about.
201 */
202int shut_your_big_mouth_gcc_int = 0;
203
William Lallemand73b85e72017-06-01 17:38:51 +0200204int *children = NULL; /* store PIDs of children in master workers mode */
205
206static volatile sig_atomic_t caught_signal = 0;
207static char **next_argv = NULL;
208
William Lallemandbc193052018-09-11 10:06:26 +0200209struct list proc_list = LIST_HEAD_INIT(proc_list);
210
211int master = 0; /* 1 if in master, 0 if in child */
212
213struct mworker_proc {
214 int pid;
215 int ipc_fd[2]; /* 0 is master side, 1 is worker side */
216 int relative_pid;
217 struct list list;
218};
219
220struct mworker_proc *proc_self;
221
222
William Lallemande20b6a62017-06-01 17:38:55 +0200223
Willy Tarreau08ceb102011-07-24 22:58:00 +0200224/* list of the temporarily limited listeners because of lack of resource */
225struct list global_listener_queue = LIST_HEAD_INIT(global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +0200226struct task *global_listener_queue_task;
Olivier Houchard9f6af332018-05-25 14:04:04 +0200227static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200228
William Lallemandb3f2be32018-09-11 10:06:18 +0200229static void *run_thread_poll_loop(void *data);
230
Willy Tarreauff055502014-04-28 22:27:06 +0200231/* bitfield of a few warnings to emit just once (WARN_*) */
232unsigned int warned = 0;
233
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100234
235/* These are strings to be reported in the output of "haproxy -vv". They may
236 * either be constants (in which case must_free must be zero) or dynamically
237 * allocated strings to pass to free() on exit, and in this case must_free
238 * must be non-zero.
239 */
240struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
241struct build_opts_str {
242 struct list list;
243 const char *str;
244 int must_free;
245};
246
Willy Tarreaue6945732016-12-21 19:57:00 +0100247/* These functions are called just after the point where the program exits
248 * after a config validity check, so they are generally suited for resource
249 * allocation and slow initializations that should be skipped during basic
250 * config checks. The functions must return 0 on success, or a combination
251 * of ERR_* flags (ERR_WARN, ERR_ABORT, ERR_FATAL, ...). The 2 latter cause
252 * and immediate exit, so the function must have emitted any useful error.
253 */
254struct list post_check_list = LIST_HEAD_INIT(post_check_list);
255struct post_check_fct {
256 struct list list;
257 int (*fct)();
258};
259
Willy Tarreau05554e62016-12-21 20:46:26 +0100260/* These functions are called when freeing the global sections at the end
261 * of deinit, after everything is stopped. They don't return anything, and
262 * they work in best effort mode as their sole goal is to make valgrind
263 * mostly happy.
264 */
265struct list post_deinit_list = LIST_HEAD_INIT(post_deinit_list);
266struct post_deinit_fct {
267 struct list list;
268 void (*fct)();
269};
270
Christopher Faulet415f6112017-07-25 16:52:58 +0200271/* These functions are called for each thread just after the thread creation
272 * and before running the scheduler. They should be used to do per-thread
273 * initializations. They must return 0 if an error occurred. */
274struct list per_thread_init_list = LIST_HEAD_INIT(per_thread_init_list);
275struct per_thread_init_fct {
276 struct list list;
277 int (*fct)();
278};
279
280/* These functions are called for each thread just after the scheduler loop and
281 * before exiting the thread. They don't return anything and, as for post-deinit
282 * functions, they work in best effort mode as their sole goal is to make
283 * valgrind mostly happy. */
284struct list per_thread_deinit_list = LIST_HEAD_INIT(per_thread_deinit_list);
285struct per_thread_deinit_fct {
286 struct list list;
287 void (*fct)();
288};
289
Willy Tarreaubaaee002006-06-26 02:48:02 +0200290/*********************************************************************/
291/* general purpose functions ***************************************/
292/*********************************************************************/
293
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100294/* used to register some build option strings at boot. Set must_free to
295 * non-zero if the string must be freed upon exit.
296 */
297void hap_register_build_opts(const char *str, int must_free)
298{
299 struct build_opts_str *b;
300
301 b = calloc(1, sizeof(*b));
302 if (!b) {
303 fprintf(stderr, "out of memory\n");
304 exit(1);
305 }
306 b->str = str;
307 b->must_free = must_free;
308 LIST_ADDQ(&build_opts_list, &b->list);
309}
310
Willy Tarreaue6945732016-12-21 19:57:00 +0100311/* used to register some initialization functions to call after the checks. */
312void hap_register_post_check(int (*fct)())
313{
314 struct post_check_fct *b;
315
316 b = calloc(1, sizeof(*b));
317 if (!b) {
318 fprintf(stderr, "out of memory\n");
319 exit(1);
320 }
321 b->fct = fct;
322 LIST_ADDQ(&post_check_list, &b->list);
323}
324
Willy Tarreau05554e62016-12-21 20:46:26 +0100325/* used to register some de-initialization functions to call after everything
326 * has stopped.
327 */
328void hap_register_post_deinit(void (*fct)())
329{
330 struct post_deinit_fct *b;
331
332 b = calloc(1, sizeof(*b));
333 if (!b) {
334 fprintf(stderr, "out of memory\n");
335 exit(1);
336 }
337 b->fct = fct;
338 LIST_ADDQ(&post_deinit_list, &b->list);
339}
340
Christopher Faulet415f6112017-07-25 16:52:58 +0200341/* used to register some initialization functions to call for each thread. */
342void hap_register_per_thread_init(int (*fct)())
343{
344 struct per_thread_init_fct *b;
345
346 b = calloc(1, sizeof(*b));
347 if (!b) {
348 fprintf(stderr, "out of memory\n");
349 exit(1);
350 }
351 b->fct = fct;
352 LIST_ADDQ(&per_thread_init_list, &b->list);
353}
354
355/* used to register some de-initialization functions to call for each thread. */
356void hap_register_per_thread_deinit(void (*fct)())
357{
358 struct per_thread_deinit_fct *b;
359
360 b = calloc(1, sizeof(*b));
361 if (!b) {
362 fprintf(stderr, "out of memory\n");
363 exit(1);
364 }
365 b->fct = fct;
366 LIST_ADDQ(&per_thread_deinit_list, &b->list);
367}
368
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100369static void display_version()
Willy Tarreaubaaee002006-06-26 02:48:02 +0200370{
371 printf("HA-Proxy version " HAPROXY_VERSION " " HAPROXY_DATE"\n");
Willy Tarreau65e94d12018-08-02 18:12:50 +0200372 printf("Copyright 2000-2018 Willy Tarreau <willy@haproxy.org>\n\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200373}
374
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100375static void display_build_opts()
Willy Tarreau7b066db2007-12-02 11:28:59 +0100376{
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100377 struct build_opts_str *item;
378
Willy Tarreau7b066db2007-12-02 11:28:59 +0100379 printf("Build options :"
380#ifdef BUILD_TARGET
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100381 "\n TARGET = " BUILD_TARGET
Willy Tarreau7b066db2007-12-02 11:28:59 +0100382#endif
383#ifdef BUILD_CPU
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100384 "\n CPU = " BUILD_CPU
Willy Tarreau7b066db2007-12-02 11:28:59 +0100385#endif
386#ifdef BUILD_CC
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100387 "\n CC = " BUILD_CC
388#endif
389#ifdef BUILD_CFLAGS
390 "\n CFLAGS = " BUILD_CFLAGS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100391#endif
Willy Tarreau9f2b7302008-01-02 20:48:34 +0100392#ifdef BUILD_OPTIONS
393 "\n OPTIONS = " BUILD_OPTIONS
Willy Tarreau7b066db2007-12-02 11:28:59 +0100394#endif
Willy Tarreau27a674e2009-08-17 07:23:33 +0200395 "\n\nDefault settings :"
396 "\n maxconn = %d, bufsize = %d, maxrewrite = %d, maxpollevents = %d"
397 "\n\n",
398 DEFAULT_MAXCONN, BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
Willy Tarreaube5b6852009-10-03 18:57:08 +0200399
Willy Tarreaucdb737e2016-12-21 18:43:10 +0100400 list_for_each_entry(item, &build_opts_list, list) {
401 puts(item->str);
402 }
403
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +0100404 putchar('\n');
405
Willy Tarreaube5b6852009-10-03 18:57:08 +0200406 list_pollers(stdout);
407 putchar('\n');
Christopher Faulet98d9fe22018-04-10 14:37:32 +0200408 list_mux_proto(stdout);
409 putchar('\n');
Christopher Fauletb3f4e142016-03-07 12:46:38 +0100410 list_filters(stdout);
411 putchar('\n');
Willy Tarreau7b066db2007-12-02 11:28:59 +0100412}
413
Willy Tarreaubaaee002006-06-26 02:48:02 +0200414/*
415 * This function prints the command line usage and exits
416 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100417static void usage(char *name)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200418{
419 display_version();
420 fprintf(stderr,
Maxime de Roucy379d9c72016-05-13 23:52:56 +0200421 "Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200422 "D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
Willy Tarreaua088d312015-10-08 11:58:48 +0200423 " [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
Willy Tarreau7b066db2007-12-02 11:28:59 +0100424 " -v displays version ; -vv shows known build options.\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200425 " -d enters debug mode ; -db only disables background mode.\n"
Willy Tarreau6e064432012-05-08 15:40:42 +0200426 " -dM[<byte>] poisons memory with <byte> (defaults to 0x50)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200427 " -V enters verbose mode (disables quiet mode)\n"
Willy Tarreau576132e2011-09-10 19:26:56 +0200428 " -D goes daemon ; -C changes to <dir> before loading files.\n"
William Lallemand095ba4c2017-06-01 17:38:50 +0200429 " -W master-worker mode.\n"
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100430#if defined(USE_SYSTEMD)
431 " -Ws master-worker mode with systemd notify support.\n"
432#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200433 " -q quiet mode : don't display messages\n"
Willy Tarreau5d01a632009-06-22 16:02:30 +0200434 " -c check mode : only check config files and exit\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200435 " -n sets the maximum total # of connections (%d)\n"
436 " -m limits the usable amount of memory (in MB)\n"
437 " -N sets the default, per-proxy maximum # of connections (%d)\n"
Emeric Brun2b920a12010-09-23 18:30:22 +0200438 " -L set local peer name (default to hostname)\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200439 " -p writes pids of all children to this file\n"
440#if defined(ENABLE_EPOLL)
441 " -de disables epoll() usage even when available\n"
442#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +0200443#if defined(ENABLE_KQUEUE)
444 " -dk disables kqueue() usage even when available\n"
445#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +0200446#if defined(ENABLE_POLL)
447 " -dp disables poll() usage even when available\n"
448#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +0200449#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +0100450 " -dS disables splice usage (broken on old kernels)\n"
451#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +0200452#if defined(USE_GETADDRINFO)
453 " -dG disables getaddrinfo() usage\n"
454#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +0000455#if defined(SO_REUSEPORT)
456 " -dR disables SO_REUSEPORT usage\n"
457#endif
Willy Tarreau3eed10e2016-11-07 21:03:16 +0100458 " -dr ignores server address resolution failures\n"
Emeric Brun850efd52014-01-29 12:24:34 +0100459 " -dV disables SSL verify on servers side\n"
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +0200460 " -sf/-st [pid ]* finishes/terminates old pids.\n"
Olivier Houchardf73629d2017-04-05 22:33:04 +0200461 " -x <unix_socket> get listening sockets from a unix socket\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200462 "\n",
463 name, DEFAULT_MAXCONN, cfg_maxpconn);
464 exit(1);
465}
466
467
468
469/*********************************************************************/
470/* more specific functions ***************************************/
471/*********************************************************************/
472
William Lallemand73b85e72017-06-01 17:38:51 +0200473/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
474 * pids the signal was correctly delivered to.
475 */
476static int tell_old_pids(int sig)
477{
478 int p;
479 int ret = 0;
480 for (p = 0; p < nb_oldpids; p++)
481 if (kill(oldpids[p], sig) == 0)
482 ret++;
483 return ret;
484}
485
486/* return 1 if a pid is a current child otherwise 0 */
487
488int current_child(int pid)
489{
490 int i;
491
492 for (i = 0; i < global.nbproc; i++) {
493 if (children[i] == pid)
494 return 1;
495 }
496 return 0;
497}
498
William Lallemand73b85e72017-06-01 17:38:51 +0200499static 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);
William Lallemandebf304f2018-09-11 10:06:21 +0200507 sigaddset(&set, SIGCHLD);
William Lallemand6e1796e2018-06-07 11:23:40 +0200508 ha_sigmask(SIG_SETMASK, &set, NULL);
William Lallemand73b85e72017-06-01 17:38:51 +0200509}
510
511static void mworker_unblock_signals()
512{
William Lallemandd3801c12018-09-11 10:06:23 +0200513 haproxy_unblock_signals();
William Lallemand73b85e72017-06-01 17:38:51 +0200514}
515
William Lallemand73b85e72017-06-01 17:38:51 +0200516/*
517 * Send signal to every known children.
518 */
519
520static void mworker_kill(int sig)
521{
522 int i;
523
524 tell_old_pids(sig);
525 if (children) {
526 for (i = 0; i < global.nbproc; i++)
527 kill(children[i], sig);
528 }
William Lallemandbc193052018-09-11 10:06:26 +0200529}
530
531/*
532 * serialize the proc list and put it in the environment
533 */
534static void mworker_proc_list_to_env()
535{
536 char *msg = NULL;
537 struct mworker_proc *child;
538
539 list_for_each_entry(child, &proc_list, list) {
540 if (msg)
541 memprintf(&msg, "%s|type=worker;fd=%d;pid=%d;rpid=%d", msg, child->ipc_fd[0], child->pid, child->relative_pid);
542 else
543 memprintf(&msg, "type=worker;fd=%d;pid=%d;rpid=%d", child->ipc_fd[0], child->pid, child->relative_pid);
544 }
545 if (msg)
546 setenv("HAPROXY_CHILDREN", msg, 1);
547}
548
549/*
550 * unserialize the proc list from the environment
551 */
552static void mworker_env_to_proc_list()
553{
554 char *msg, *token = NULL, *s1;
555
556 msg = getenv("HAPROXY_CHILDREN");
557 if (!msg)
558 return;
559
560 while ((token = strtok_r(msg, "|", &s1))) {
561 struct mworker_proc *child;
562 char *subtoken = NULL;
563 char *s2;
564
565 msg = NULL;
566
567 child = calloc(1, sizeof(*child));
568
569 while ((subtoken = strtok_r(token, ";", &s2))) {
570
571 token = NULL;
572
573 if (strncmp(subtoken, "fd=", 3) == 0) {
574 child->ipc_fd[0] = atoi(subtoken+3);
575 } else if (strncmp(subtoken, "pid=", 4) == 0) {
576 child->pid = atoi(subtoken+4);
577 } else if (strncmp(subtoken, "rpid=", 5) == 0) {
578 child->relative_pid = atoi(subtoken+5);
579 }
580 }
581 if (child->pid)
582 LIST_ADDQ(&proc_list, &child->list);
583 else
584 free(child);
585 }
586
587 unsetenv("HAPROXY_CHILDREN");
William Lallemand73b85e72017-06-01 17:38:51 +0200588}
589
Willy Tarreaubaaee002006-06-26 02:48:02 +0200590/*
William Lallemand75ea0a02017-11-15 19:02:58 +0100591 * Upon a reload, the master worker needs to close all listeners FDs but the mworker_pipe
592 * fd, and the FD provided by fd@
593 */
594static void mworker_cleanlisteners()
595{
596 struct listener *l, *l_next;
597 struct proxy *curproxy;
Willy Tarreau473cf5d2017-12-05 11:14:12 +0100598 struct peers *curpeers;
William Lallemand75ea0a02017-11-15 19:02:58 +0100599
William Lallemand3da97692018-09-11 10:06:19 +0200600 /* we might have to unbind some peers sections from some processes */
601 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
602 if (!curpeers->peers_fe)
603 continue;
Willy Tarreau473cf5d2017-12-05 11:14:12 +0100604
William Lallemand3da97692018-09-11 10:06:19 +0200605 stop_proxy(curpeers->peers_fe);
606 /* disable this peer section so that it kills itself */
607 signal_unregister_handler(curpeers->sighandler);
608 task_delete(curpeers->sync_task);
609 task_free(curpeers->sync_task);
610 curpeers->sync_task = NULL;
611 task_free(curpeers->peers_fe->task);
612 curpeers->peers_fe->task = NULL;
613 curpeers->peers_fe = NULL;
614 }
William Lallemand75ea0a02017-11-15 19:02:58 +0100615
William Lallemand91c13b62018-09-11 10:06:20 +0200616 for (curproxy = proxies_list; curproxy; curproxy = curproxy->next) {
William Lallemand75ea0a02017-11-15 19:02:58 +0100617 list_for_each_entry_safe(l, l_next, &curproxy->conf.listeners, by_fe) {
618 /* does not close if the FD is inherited with fd@
619 * from the parent process */
William Lallemande22f11f2018-09-11 10:06:27 +0200620 if (!(l->options & (LI_O_INHERITED|LI_O_MWORKER)))
William Lallemand91c13b62018-09-11 10:06:20 +0200621 unbind_listener(l);
William Lallemande22f11f2018-09-11 10:06:27 +0200622 /* remove the listener, but not those we need in the master... */
623 if (!(l->options & LI_O_MWORKER))
624 delete_listener(l);
William Lallemand75ea0a02017-11-15 19:02:58 +0100625 }
626 }
627}
628
629
630/*
William Lallemand73b85e72017-06-01 17:38:51 +0200631 * remove a pid forom the olpid array and decrease nb_oldpids
632 * return 1 pid was found otherwise return 0
633 */
634
635int delete_oldpid(int pid)
636{
637 int i;
638
639 for (i = 0; i < nb_oldpids; i++) {
640 if (oldpids[i] == pid) {
641 oldpids[i] = oldpids[nb_oldpids - 1];
642 oldpids[nb_oldpids - 1] = 0;
643 nb_oldpids--;
644 return 1;
645 }
646 }
647 return 0;
648}
649
William Lallemand85b0bd92017-06-01 17:38:53 +0200650
651static void get_cur_unixsocket()
652{
653 /* if -x was used, try to update the stat socket if not available anymore */
654 if (global.stats_fe) {
655 struct bind_conf *bind_conf;
656
657 /* pass through all stats socket */
658 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
659 struct listener *l;
660
661 list_for_each_entry(l, &bind_conf->listeners, by_bind) {
662
663 if (l->addr.ss_family == AF_UNIX &&
664 (bind_conf->level & ACCESS_FD_LISTENERS)) {
665 const struct sockaddr_un *un;
666
667 un = (struct sockaddr_un *)&l->addr;
668 /* priority to old_unixsocket */
669 if (!cur_unixsocket) {
670 cur_unixsocket = strdup(un->sun_path);
671 } else {
672 if (old_unixsocket && !strcmp(un->sun_path, old_unixsocket)) {
673 free(cur_unixsocket);
674 cur_unixsocket = strdup(old_unixsocket);
675 return;
676 }
677 }
678 }
679 }
680 }
681 }
682 if (!cur_unixsocket && old_unixsocket)
683 cur_unixsocket = strdup(old_unixsocket);
684}
685
William Lallemand73b85e72017-06-01 17:38:51 +0200686/*
687 * When called, this function reexec haproxy with -sf followed by current
688 * children PIDs and possibily old children PIDs if they didn't leave yet.
689 */
690static void mworker_reload()
691{
692 int next_argc = 0;
693 int j;
694 char *msg = NULL;
695
696 mworker_block_signals();
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100697#if defined(USE_SYSTEMD)
698 if (global.tune.options & GTUNE_USE_SYSTEMD)
699 sd_notify(0, "RELOADING=1");
700#endif
William Lallemand73b85e72017-06-01 17:38:51 +0200701 setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
702
William Lallemandbc193052018-09-11 10:06:26 +0200703 mworker_proc_list_to_env(); /* put the children description in the env */
704
William Lallemand73b85e72017-06-01 17:38:51 +0200705 /* compute length */
706 while (next_argv[next_argc])
707 next_argc++;
708
William Lallemand85b0bd92017-06-01 17:38:53 +0200709 /* 1 for haproxy -sf, 2 for -x /socket */
710 next_argv = realloc(next_argv, (next_argc + 1 + 2 + global.nbproc + nb_oldpids + 1) * sizeof(char *));
William Lallemand73b85e72017-06-01 17:38:51 +0200711 if (next_argv == NULL)
712 goto alloc_error;
713
714
715 /* add -sf <PID>* to argv */
716 if (children || nb_oldpids > 0)
717 next_argv[next_argc++] = "-sf";
718 if (children) {
719 for (j = 0; j < global.nbproc; next_argc++,j++) {
720 next_argv[next_argc] = memprintf(&msg, "%d", children[j]);
721 if (next_argv[next_argc] == NULL)
722 goto alloc_error;
723 msg = NULL;
724 }
725 }
726 /* copy old process PIDs */
727 for (j = 0; j < nb_oldpids; next_argc++,j++) {
728 next_argv[next_argc] = memprintf(&msg, "%d", oldpids[j]);
729 if (next_argv[next_argc] == NULL)
730 goto alloc_error;
731 msg = NULL;
732 }
733 next_argv[next_argc] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200734
William Lallemand2bf6d622017-06-20 11:20:23 +0200735 /* add the -x option with the stat socket */
William Lallemand85b0bd92017-06-01 17:38:53 +0200736 if (cur_unixsocket) {
737
William Lallemand2bf6d622017-06-20 11:20:23 +0200738 next_argv[next_argc++] = "-x";
739 next_argv[next_argc++] = (char *)cur_unixsocket;
740 next_argv[next_argc++] = NULL;
William Lallemand85b0bd92017-06-01 17:38:53 +0200741 }
742
William Lallemandde0ff5a2018-09-11 10:06:24 +0200743 if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL)
744 deinit_pollers(); /* we don't want to leak the poller fd */
William Lallemandb3f2be32018-09-11 10:06:18 +0200745
Christopher Faulet767a84b2017-11-24 16:50:31 +0100746 ha_warning("Reexecuting Master process\n");
Tim Duesterhus0436ab72017-11-12 17:39:18 +0100747 execvp(next_argv[0], next_argv);
William Lallemand73b85e72017-06-01 17:38:51 +0200748
Christopher Faulet767a84b2017-11-24 16:50:31 +0100749 ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
William Lallemand722d4ca2017-11-15 19:02:55 +0100750 return;
751
William Lallemand73b85e72017-06-01 17:38:51 +0200752alloc_error:
Christopher Faulet767a84b2017-11-24 16:50:31 +0100753 ha_warning("Failed to reexecute the master processs [%d]: Cannot allocate memory\n", pid);
William Lallemand73b85e72017-06-01 17:38:51 +0200754 return;
755}
756
William Lallemand73b85e72017-06-01 17:38:51 +0200757/*
William Lallemandb3f2be32018-09-11 10:06:18 +0200758 * When called, this function reexec haproxy with -sf followed by current
759 * children PIDs and possibily old children PIDs if they didn't leave yet.
William Lallemand73b85e72017-06-01 17:38:51 +0200760 */
William Lallemandb3f2be32018-09-11 10:06:18 +0200761static void mworker_catch_sighup(struct sig_handler *sh)
William Lallemand73b85e72017-06-01 17:38:51 +0200762{
William Lallemandb3f2be32018-09-11 10:06:18 +0200763 mworker_reload();
764}
William Lallemand73b85e72017-06-01 17:38:51 +0200765
William Lallemandb3f2be32018-09-11 10:06:18 +0200766static void mworker_catch_sigterm(struct sig_handler *sh)
767{
768 int sig = sh->arg;
William Lallemand2f8b31c2017-11-15 19:02:56 +0100769
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100770#if defined(USE_SYSTEMD)
William Lallemandb3f2be32018-09-11 10:06:18 +0200771 if (global.tune.options & GTUNE_USE_SYSTEMD) {
772 sd_notify(0, "STOPPING=1");
773 }
Tim Duesterhusd6942c82017-11-20 15:58:35 +0100774#endif
William Lallemandb3f2be32018-09-11 10:06:18 +0200775 ha_warning("Exiting Master process...\n");
776 mworker_kill(sig);
777}
William Lallemand73b85e72017-06-01 17:38:51 +0200778
William Lallemandb3f2be32018-09-11 10:06:18 +0200779/*
780 * Wait for every children to exit
781 */
William Lallemand73b85e72017-06-01 17:38:51 +0200782
William Lallemandb3f2be32018-09-11 10:06:18 +0200783static void mworker_catch_sigchld(struct sig_handler *sh)
784{
785 int exitpid = -1;
786 int status = 0;
William Lallemandbc193052018-09-11 10:06:26 +0200787 struct mworker_proc *child, *it;
William Lallemand73b85e72017-06-01 17:38:51 +0200788
William Lallemandb3f2be32018-09-11 10:06:18 +0200789restart_wait:
William Lallemand73b85e72017-06-01 17:38:51 +0200790
William Lallemandb3f2be32018-09-11 10:06:18 +0200791 exitpid = waitpid(-1, &status, WNOHANG);
792 if (exitpid > 0) {
William Lallemand73b85e72017-06-01 17:38:51 +0200793 if (WIFEXITED(status))
794 status = WEXITSTATUS(status);
795 else if (WIFSIGNALED(status))
796 status = 128 + WTERMSIG(status);
797 else if (WIFSTOPPED(status))
798 status = 128 + WSTOPSIG(status);
799 else
800 status = 255;
801
William Lallemandbc193052018-09-11 10:06:26 +0200802 list_for_each_entry_safe(child, it, &proc_list, list) {
803 if (child->pid != exitpid)
804 continue;
805
806 LIST_DEL(&child->list);
807 close(child->ipc_fd[0]);
808 free(child);
809 break;
810 }
811
William Lallemand73b85e72017-06-01 17:38:51 +0200812 if (!children) {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100813 ha_warning("Worker %d exited with code %d\n", exitpid, status);
William Lallemand73b85e72017-06-01 17:38:51 +0200814 } else {
815 /* check if exited child was in the current children list */
816 if (current_child(exitpid)) {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100817 ha_alert("Current worker %d exited with code %d\n", exitpid, status);
William Lallemand69f9b3b2017-06-01 17:38:54 +0200818 if (status != 0 && status != 130 && status != 143
William Lallemand4cfede82017-11-24 22:02:34 +0100819 && !(global.tune.options & GTUNE_NOEXIT_ONFAILURE)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +0100820 ha_alert("exit-on-failure: killing every workers with SIGTERM\n");
William Lallemand69f9b3b2017-06-01 17:38:54 +0200821 mworker_kill(SIGTERM);
822 }
William Lallemand73b85e72017-06-01 17:38:51 +0200823 } else {
Tim Duesterhusd16f4502017-12-05 18:14:13 +0100824 ha_warning("Former worker %d exited with code %d\n", exitpid, status);
William Lallemand73b85e72017-06-01 17:38:51 +0200825 delete_oldpid(exitpid);
826 }
827 }
William Lallemandb3f2be32018-09-11 10:06:18 +0200828 /* do it again to check if it was the last worker */
829 goto restart_wait;
William Lallemand73b85e72017-06-01 17:38:51 +0200830 }
William Lallemandb3f2be32018-09-11 10:06:18 +0200831 /* Better rely on the system than on a list of process to check if it was the last one */
832 else if (exitpid == -1 && errno == ECHILD) {
833 ha_warning("All workers exited. Exiting... (%d)\n", status);
834 atexit_flag = 0;
835 exit(status); /* parent must leave using the latest status code known */
836 }
837
William Lallemand73b85e72017-06-01 17:38:51 +0200838}
839
William Lallemandb3f2be32018-09-11 10:06:18 +0200840static void mworker_loop()
841{
842
843#if defined(USE_SYSTEMD)
844 if (global.tune.options & GTUNE_USE_SYSTEMD)
845 sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
846#endif
847
William Lallemandbc193052018-09-11 10:06:26 +0200848 master = 1;
849
850 mworker_env_to_proc_list(); /* get the info of the children in the env */
851
William Lallemandb3f2be32018-09-11 10:06:18 +0200852 signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
853 signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
854 signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
855 signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
856 signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
857 signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
858
859 mworker_unblock_signals();
860 mworker_cleanlisteners();
861
William Lallemandbc193052018-09-11 10:06:26 +0200862 mworker_catch_sigchld(NULL); /* ensure we clean the children in case
863 some SIGCHLD were lost */
864
William Lallemandf9cc07c2018-09-11 10:06:25 +0200865 tid = 0;
866
William Lallemandb3f2be32018-09-11 10:06:18 +0200867 global.nbthread = 1;
868 relative_pid = 1;
869 pid_bit = 1;
870
871 jobs++; /* this is the "master" job, we want to take care of the
872 signals even if there is no listener so the poll loop don't
873 leave */
874
875 fork_poller();
876 run_thread_poll_loop((int []){0});
877}
William Lallemandcb11fd22017-06-01 17:38:52 +0200878
879/*
William Lallemandf9cc07c2018-09-11 10:06:25 +0200880 * This function initialize haproxy for the master wait mode, it won't fork any
881 * new process and won't parse the configuration
882 */
883static int mworker_wait_mode()
884{
885
886 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
887
888 if (!(global.tune.options & GTUNE_USE_KQUEUE))
889 disable_poller("kqueue");
890
891 if (!(global.tune.options & GTUNE_USE_EPOLL))
892 disable_poller("epoll");
893
894 if (!(global.tune.options & GTUNE_USE_POLL))
895 disable_poller("poll");
896
897 if (!(global.tune.options & GTUNE_USE_SELECT))
898 disable_poller("select");
899
900 if (global.tune.maxpollevents <= 0)
901 global.tune.maxpollevents = MAX_POLL_EVENTS;
902
903 init_pollers();
904
905
906 mworker_loop();
907
908 /* should never be there */
909
910 return -1;
911}
912
913/*
William Lallemandcb11fd22017-06-01 17:38:52 +0200914 * Reexec the process in failure mode, instead of exiting
915 */
916void reexec_on_failure()
917{
918 if (!atexit_flag)
919 return;
920
921 setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
922
Christopher Faulet767a84b2017-11-24 16:50:31 +0100923 ha_warning("Reexecuting Master process in waitpid mode\n");
William Lallemandcb11fd22017-06-01 17:38:52 +0200924 mworker_reload();
William Lallemandcb11fd22017-06-01 17:38:52 +0200925}
William Lallemand73b85e72017-06-01 17:38:51 +0200926
927
928/*
Willy Tarreaud0807c32010-08-27 18:26:11 +0200929 * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
930 * a signal zero to all subscribers. This means that it's as easy as
931 * subscribing to signal 0 to get informed about an imminent shutdown.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200932 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100933static void sig_soft_stop(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200934{
935 soft_stop();
Willy Tarreau24f4efa2010-08-27 17:56:48 +0200936 signal_unregister_handler(sh);
Willy Tarreaubafbe012017-11-24 17:34:44 +0100937 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200938}
939
940/*
941 * upon SIGTTOU, we pause everything
942 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100943static void sig_pause(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200944{
945 pause_proxies();
Willy Tarreaubafbe012017-11-24 17:34:44 +0100946 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200947}
948
949/*
950 * upon SIGTTIN, let's have a soft stop.
951 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100952static void sig_listen(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200953{
Willy Tarreaube58c382011-07-24 18:28:10 +0200954 resume_proxies();
Willy Tarreaubaaee002006-06-26 02:48:02 +0200955}
956
957/*
958 * this function dumps every server's state when the process receives SIGHUP.
959 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +0100960static void sig_dump_state(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200961{
Olivier Houchardfbc74e82017-11-24 16:54:05 +0100962 struct proxy *p = proxies_list;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200963
Christopher Faulet767a84b2017-11-24 16:50:31 +0100964 ha_warning("SIGHUP received, dumping servers states.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200965 while (p) {
966 struct server *s = p->srv;
967
968 send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
969 while (s) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100970 chunk_printf(&trash,
971 "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
972 p->id, s->id,
Emeric Brun52a91d32017-08-31 14:41:55 +0200973 (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100974 s->cur_sess, s->nbpend, s->counters.cum_sess);
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200975 ha_warning("%s\n", trash.area);
976 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200977 s = s->next;
978 }
979
Willy Tarreau5fcc8f12007-09-17 11:27:09 +0200980 /* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
981 if (!p->srv) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100982 chunk_printf(&trash,
983 "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
984 p->id,
985 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 +0200986 } else if (p->srv_act == 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100987 chunk_printf(&trash,
988 "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
989 p->id,
990 (p->srv_bck) ? "is running on backup servers" : "has no server available",
991 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 +0200992 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100993 chunk_printf(&trash,
994 "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
995 " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
996 p->id, p->srv_act, p->srv_bck,
997 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 +0200998 }
Willy Tarreau843b7cb2018-07-13 10:54:26 +0200999 ha_warning("%s\n", trash.area);
1000 send_log(p, LOG_NOTICE, "%s\n", trash.area);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001001
1002 p = p->next;
1003 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001004}
1005
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001006static void dump(struct sig_handler *sh)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001007{
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001008 /* dump memory usage then free everything possible */
1009 dump_pools();
Willy Tarreaubafbe012017-11-24 17:34:44 +01001010 pool_gc(NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001011}
1012
William Lallemande1340412017-12-28 16:09:36 +01001013/*
1014 * This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
1015 * If <fd> < 0, it opens /dev/null and use it to dup
1016 *
1017 * In the case of chrooting, you have to open /dev/null before the chroot, and
1018 * pass the <fd> to this function
1019 */
1020static void stdio_quiet(int fd)
1021{
1022 if (fd < 0)
1023 fd = open("/dev/null", O_RDWR, 0);
1024
1025 if (fd > -1) {
1026 fclose(stdin);
1027 fclose(stdout);
1028 fclose(stderr);
1029
1030 dup2(fd, 0);
1031 dup2(fd, 1);
1032 dup2(fd, 2);
1033 if (fd > 2)
1034 close(fd);
1035 return;
1036 }
1037
1038 ha_alert("Cannot open /dev/null\n");
1039 exit(EXIT_FAILURE);
1040}
1041
1042
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001043/* This function check if cfg_cfgfiles containes directories.
1044 * If it find one, it add all the files (and only files) it containes
1045 * in cfg_cfgfiles in place of the directory (and remove the directory).
1046 * It add the files in lexical order.
1047 * It add only files with .cfg extension.
1048 * It doesn't add files with name starting with '.'
1049 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001050static void cfgfiles_expand_directories(void)
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001051{
1052 struct wordlist *wl, *wlb;
1053 char *err = NULL;
1054
1055 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
1056 struct stat file_stat;
1057 struct dirent **dir_entries = NULL;
1058 int dir_entries_nb;
1059 int dir_entries_it;
1060
1061 if (stat(wl->s, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001062 ha_alert("Cannot open configuration file/directory %s : %s\n",
1063 wl->s,
1064 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001065 exit(1);
1066 }
1067
1068 if (!S_ISDIR(file_stat.st_mode))
1069 continue;
1070
1071 /* from this point wl->s is a directory */
1072
1073 dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
1074 if (dir_entries_nb < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001075 ha_alert("Cannot open configuration directory %s : %s\n",
1076 wl->s,
1077 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001078 exit(1);
1079 }
1080
1081 /* for each element in the directory wl->s */
1082 for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
1083 struct dirent *dir_entry = dir_entries[dir_entries_it];
1084 char *filename = NULL;
1085 char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
1086
1087 /* don't add filename that begin with .
1088 * only add filename with .cfg extention
1089 */
1090 if (dir_entry->d_name[0] == '.' ||
1091 !(d_name_cfgext && d_name_cfgext[4] == '\0'))
1092 goto next_dir_entry;
1093
1094 if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001095 ha_alert("Cannot load configuration files %s : out of memory.\n",
1096 filename);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001097 exit(1);
1098 }
1099
1100 if (stat(filename, &file_stat)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001101 ha_alert("Cannot open configuration file %s : %s\n",
1102 wl->s,
1103 strerror(errno));
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001104 exit(1);
1105 }
1106
1107 /* don't add anything else than regular file in cfg_cfgfiles
1108 * this way we avoid loops
1109 */
1110 if (!S_ISREG(file_stat.st_mode))
1111 goto next_dir_entry;
1112
1113 if (!list_append_word(&wl->list, filename, &err)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001114 ha_alert("Cannot load configuration files %s : %s\n",
1115 filename,
1116 err);
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001117 exit(1);
1118 }
1119
1120next_dir_entry:
1121 free(filename);
1122 free(dir_entry);
1123 }
1124
1125 free(dir_entries);
1126
1127 /* remove the current directory (wl) from cfg_cfgfiles */
1128 free(wl->s);
1129 LIST_DEL(&wl->list);
1130 free(wl);
1131 }
1132
1133 free(err);
1134}
1135
Olivier Houchardf73629d2017-04-05 22:33:04 +02001136static int get_old_sockets(const char *unixsocket)
1137{
1138 char *cmsgbuf = NULL, *tmpbuf = NULL;
1139 int *tmpfd = NULL;
1140 struct sockaddr_un addr;
1141 struct cmsghdr *cmsg;
1142 struct msghdr msghdr;
1143 struct iovec iov;
1144 struct xfer_sock_list *xfer_sock = NULL;
Olivier Houchard54740872017-04-06 14:45:14 +02001145 struct timeval tv = { .tv_sec = 1, .tv_usec = 0 };
Olivier Houchardf73629d2017-04-05 22:33:04 +02001146 int sock = -1;
1147 int ret = -1;
1148 int ret2 = -1;
1149 int fd_nb;
1150 int got_fd = 0;
1151 int i = 0;
1152 size_t maxoff = 0, curoff = 0;
1153
1154 memset(&msghdr, 0, sizeof(msghdr));
1155 cmsgbuf = malloc(CMSG_SPACE(sizeof(int)) * MAX_SEND_FD);
1156 if (!cmsgbuf) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001157 ha_warning("Failed to allocate memory to send sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001158 goto out;
1159 }
1160 sock = socket(PF_UNIX, SOCK_STREAM, 0);
1161 if (sock < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001162 ha_warning("Failed to connect to the old process socket '%s'\n",
1163 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001164 goto out;
1165 }
1166 strncpy(addr.sun_path, unixsocket, sizeof(addr.sun_path));
1167 addr.sun_path[sizeof(addr.sun_path) - 1] = 0;
1168 addr.sun_family = PF_UNIX;
1169 ret = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
1170 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001171 ha_warning("Failed to connect to the old process socket '%s'\n",
1172 unixsocket);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001173 goto out;
1174 }
Olivier Houchard54740872017-04-06 14:45:14 +02001175 setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001176 iov.iov_base = &fd_nb;
1177 iov.iov_len = sizeof(fd_nb);
1178 msghdr.msg_iov = &iov;
1179 msghdr.msg_iovlen = 1;
1180 send(sock, "_getsocks\n", strlen("_getsocks\n"), 0);
1181 /* First, get the number of file descriptors to be received */
1182 if (recvmsg(sock, &msghdr, MSG_WAITALL) != sizeof(fd_nb)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001183 ha_warning("Failed to get the number of sockets to be transferred !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001184 goto out;
1185 }
1186 if (fd_nb == 0) {
1187 ret = 0;
1188 goto out;
1189 }
Olivier Houchardf143b802017-11-04 15:13:01 +01001190 tmpbuf = malloc(fd_nb * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001191 if (tmpbuf == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001192 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001193 goto out;
1194 }
1195 tmpfd = malloc(fd_nb * sizeof(int));
1196 if (tmpfd == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001197 ha_warning("Failed to allocate memory while receiving sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001198 goto out;
1199 }
1200 msghdr.msg_control = cmsgbuf;
1201 msghdr.msg_controllen = CMSG_SPACE(sizeof(int)) * MAX_SEND_FD;
Olivier Houchardf143b802017-11-04 15:13:01 +01001202 iov.iov_len = MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int));
Olivier Houchardf73629d2017-04-05 22:33:04 +02001203 do {
1204 int ret3;
1205
1206 iov.iov_base = tmpbuf + curoff;
1207 ret = recvmsg(sock, &msghdr, 0);
1208 if (ret == -1 && errno == EINTR)
1209 continue;
1210 if (ret <= 0)
1211 break;
1212 /* Send an ack to let the sender know we got the sockets
1213 * and it can send some more
1214 */
1215 do {
1216 ret3 = send(sock, &got_fd, sizeof(got_fd), 0);
1217 } while (ret3 == -1 && errno == EINTR);
1218 for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg != NULL;
1219 cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
1220 if (cmsg->cmsg_level == SOL_SOCKET &&
1221 cmsg->cmsg_type == SCM_RIGHTS) {
1222 size_t totlen = cmsg->cmsg_len -
1223 CMSG_LEN(0);
1224 if (totlen / sizeof(int) + got_fd > fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001225 ha_warning("Got to many sockets !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001226 goto out;
1227 }
1228 /*
1229 * Be paranoid and use memcpy() to avoid any
1230 * potential alignement issue.
1231 */
1232 memcpy(&tmpfd[got_fd], CMSG_DATA(cmsg), totlen);
1233 got_fd += totlen / sizeof(int);
1234 }
1235 }
1236 curoff += ret;
1237 } while (got_fd < fd_nb);
1238
1239 if (got_fd != fd_nb) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001240 ha_warning("We didn't get the expected number of sockets (expecting %d got %d)\n",
1241 fd_nb, got_fd);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001242 goto out;
1243 }
1244 maxoff = curoff;
1245 curoff = 0;
1246 for (i = 0; i < got_fd; i++) {
1247 int fd = tmpfd[i];
1248 socklen_t socklen;
1249 int len;
1250
1251 xfer_sock = calloc(1, sizeof(*xfer_sock));
1252 if (!xfer_sock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001253 ha_warning("Failed to allocate memory in get_old_sockets() !\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001254 break;
1255 }
1256 xfer_sock->fd = -1;
1257
1258 socklen = sizeof(xfer_sock->addr);
1259 if (getsockname(fd, (struct sockaddr *)&xfer_sock->addr, &socklen) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001260 ha_warning("Failed to get socket address\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001261 free(xfer_sock);
Olivier Houchardbe7b1ce2017-07-17 17:25:33 +02001262 xfer_sock = NULL;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001263 continue;
1264 }
1265 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001266 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001267 goto out;
1268 }
1269 len = tmpbuf[curoff++];
1270 if (len > 0) {
1271 /* We have a namespace */
1272 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001273 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001274 goto out;
1275 }
1276 xfer_sock->namespace = malloc(len + 1);
1277 if (!xfer_sock->namespace) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001278 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001279 goto out;
1280 }
1281 memcpy(xfer_sock->namespace, &tmpbuf[curoff], len);
1282 xfer_sock->namespace[len] = 0;
1283 curoff += len;
1284 }
1285 if (curoff >= maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001286 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001287 goto out;
1288 }
1289 len = tmpbuf[curoff++];
1290 if (len > 0) {
1291 /* We have an interface */
1292 if (curoff + len > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001293 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001294 goto out;
1295 }
1296 xfer_sock->iface = malloc(len + 1);
1297 if (!xfer_sock->iface) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001298 ha_warning("Failed to allocate memory while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001299 goto out;
1300 }
1301 memcpy(xfer_sock->iface, &tmpbuf[curoff], len);
Olivier Houchard33e083c2018-03-15 17:48:49 +01001302 xfer_sock->iface[len] = 0;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001303 curoff += len;
1304 }
1305 if (curoff + sizeof(int) > maxoff) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001306 ha_warning("Inconsistency while transferring sockets\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001307 goto out;
1308 }
1309 memcpy(&xfer_sock->options, &tmpbuf[curoff],
1310 sizeof(xfer_sock->options));
1311 curoff += sizeof(xfer_sock->options);
1312
1313 xfer_sock->fd = fd;
1314 if (xfer_sock_list)
1315 xfer_sock_list->prev = xfer_sock;
1316 xfer_sock->next = xfer_sock_list;
1317 xfer_sock->prev = NULL;
1318 xfer_sock_list = xfer_sock;
1319 xfer_sock = NULL;
1320 }
1321
1322 ret2 = 0;
1323out:
1324 /* If we failed midway make sure to close the remaining
1325 * file descriptors
1326 */
1327 if (tmpfd != NULL && i < got_fd) {
1328 for (; i < got_fd; i++) {
1329 close(tmpfd[i]);
1330 }
1331 }
1332 free(tmpbuf);
1333 free(tmpfd);
1334 free(cmsgbuf);
1335 if (sock != -1)
1336 close(sock);
1337 if (xfer_sock) {
1338 free(xfer_sock->namespace);
1339 free(xfer_sock->iface);
1340 if (xfer_sock->fd != -1)
1341 close(xfer_sock->fd);
1342 free(xfer_sock);
1343 }
1344 return (ret2);
1345}
1346
Willy Tarreaubaaee002006-06-26 02:48:02 +02001347/*
William Lallemand73b85e72017-06-01 17:38:51 +02001348 * copy and cleanup the current argv
1349 * Remove the -sf /-st parameters
1350 * Return an allocated copy of argv
1351 */
1352
1353static char **copy_argv(int argc, char **argv)
1354{
1355 char **newargv;
William Lallemand2bf6d622017-06-20 11:20:23 +02001356 int i = 0, j = 0;
William Lallemand73b85e72017-06-01 17:38:51 +02001357
1358 newargv = calloc(argc + 2, sizeof(char *));
1359 if (newargv == NULL) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001360 ha_warning("Cannot allocate memory\n");
William Lallemand73b85e72017-06-01 17:38:51 +02001361 return NULL;
1362 }
1363
William Lallemand2bf6d622017-06-20 11:20:23 +02001364 while (i < argc) {
1365 /* -sf or -st or -x */
William Lallemand29f690c2018-01-09 23:12:27 +01001366 if (i > 0 && argv[i][0] == '-' &&
1367 ((argv[i][1] == 's' && (argv[i][2] == 'f' || argv[i][2] == 't')) || argv[i][1] == 'x' )) {
William Lallemand2bf6d622017-06-20 11:20:23 +02001368 /* list of pids to finish ('f') or terminate ('t') or unix socket (-x) */
William Lallemand73b85e72017-06-01 17:38:51 +02001369 i++;
1370 while (i < argc && argv[i][0] != '-') {
1371 i++;
1372 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001373 continue;
William Lallemand73b85e72017-06-01 17:38:51 +02001374 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001375
1376 newargv[j++] = argv[i++];
William Lallemand73b85e72017-06-01 17:38:51 +02001377 }
William Lallemand2bf6d622017-06-20 11:20:23 +02001378
William Lallemand73b85e72017-06-01 17:38:51 +02001379 return newargv;
1380}
1381
1382/*
Willy Tarreaubaaee002006-06-26 02:48:02 +02001383 * This function initializes all the necessary variables. It only returns
1384 * if everything is OK. If something fails, it exits.
1385 */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01001386static void init(int argc, char **argv)
Willy Tarreaubaaee002006-06-26 02:48:02 +02001387{
Willy Tarreaubaaee002006-06-26 02:48:02 +02001388 int arg_mode = 0; /* MODE_DEBUG, ... */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001389 char *tmp;
1390 char *cfg_pidfile = NULL;
Willy Tarreau058e9072009-07-20 09:30:05 +02001391 int err_code = 0;
Maxime de Roucy0f503922016-05-13 23:52:55 +02001392 char *err_msg = NULL;
Willy Tarreau477ecd82010-01-03 21:12:30 +01001393 struct wordlist *wl;
Kevinm48936af2010-12-22 16:08:21 +00001394 char *progname;
Willy Tarreau576132e2011-09-10 19:26:56 +02001395 char *change_dir = NULL;
Christopher Fauletd7c91962015-04-30 11:48:27 +02001396 struct proxy *px;
Willy Tarreaue6945732016-12-21 19:57:00 +01001397 struct post_check_fct *pcf;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001398
Christopher Faulete3a5e352017-10-24 13:53:54 +02001399 global.mode = MODE_STARTING;
William Lallemand73b85e72017-06-01 17:38:51 +02001400 next_argv = copy_argv(argc, argv);
1401
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001402 if (!init_trash_buffers(1)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001403 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet748919a2017-07-26 14:59:46 +02001404 exit(1);
1405 }
David du Colombier7af46052012-05-16 14:16:48 +02001406
Emeric Brun2b920a12010-09-23 18:30:22 +02001407 /* NB: POSIX does not make it mandatory for gethostname() to NULL-terminate
1408 * the string in case of truncation, and at least FreeBSD appears not to do
1409 * it.
1410 */
1411 memset(hostname, 0, sizeof(hostname));
1412 gethostname(hostname, sizeof(hostname) - 1);
1413 memset(localpeer, 0, sizeof(localpeer));
1414 memcpy(localpeer, hostname, (sizeof(hostname) > sizeof(localpeer) ? sizeof(localpeer) : sizeof(hostname)) - 1);
William Lallemanddaf4cd22018-04-17 16:46:13 +02001415 setenv("HAPROXY_LOCALPEER", localpeer, 1);
Emeric Brun2b920a12010-09-23 18:30:22 +02001416
Willy Tarreaubaaee002006-06-26 02:48:02 +02001417 /*
1418 * Initialize the previously static variables.
1419 */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001420
Willy Tarreau173d9952018-01-26 21:48:23 +01001421 totalconn = actconn = listeners = stopping = 0;
Cyril Bonté203ec5a2017-03-23 22:44:13 +01001422 killed = 0;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02001423
Willy Tarreaubaaee002006-06-26 02:48:02 +02001424
1425#ifdef HAPROXY_MEMMAX
Willy Tarreau70060452015-12-14 12:46:07 +01001426 global.rlimit_memmax_all = HAPROXY_MEMMAX;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001427#endif
1428
Benoit GARNIERb413c2a2016-03-27 11:08:03 +02001429 tzset();
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02001430 tv_update_date(-1,-1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001431 start_date = now;
1432
Willy Tarreau84310e22014-02-14 11:59:04 +01001433 srandom(now_ms - getpid());
1434
Dragan Dosen835b9212016-02-12 13:23:03 +01001435 init_log();
Willy Tarreau29857942009-05-10 09:01:21 +02001436 signal_init();
Willy Tarreau8ed669b2013-01-11 15:49:37 +01001437 if (init_acl() != 0)
1438 exit(1);
Willy Tarreauc6ca1a02007-05-13 19:43:47 +02001439 init_task();
Willy Tarreau87b09662015-04-03 00:22:06 +02001440 init_stream();
Willy Tarreaub1ec8c42015-04-03 13:53:24 +02001441 init_session();
Willy Tarreauf2943dc2012-10-26 20:10:28 +02001442 init_connection();
Willy Tarreau8280d642009-09-23 23:37:52 +02001443 /* warning, we init buffers later */
Willy Tarreaue4d7e552007-05-13 20:19:55 +02001444 init_pendconn();
Willy Tarreau80587432006-12-24 17:47:20 +01001445 init_proto_http();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001446
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001447 /* Initialise lua. */
1448 hlua_init();
Thierry FOURNIER6f1fd482015-01-23 14:06:13 +01001449
Christopher Fauletff2613e2016-11-09 11:36:17 +01001450 /* Initialize process vars */
1451 vars_init(&global.vars, SCOPE_PROC);
1452
Willy Tarreau43b78992009-01-25 15:42:27 +01001453 global.tune.options |= GTUNE_USE_SELECT; /* select() is always available */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001454#if defined(ENABLE_POLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001455 global.tune.options |= GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001456#endif
1457#if defined(ENABLE_EPOLL)
Willy Tarreau43b78992009-01-25 15:42:27 +01001458 global.tune.options |= GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001459#endif
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001460#if defined(ENABLE_KQUEUE)
Willy Tarreau43b78992009-01-25 15:42:27 +01001461 global.tune.options |= GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001462#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001463#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001464 global.tune.options |= GTUNE_USE_SPLICE;
1465#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001466#if defined(USE_GETADDRINFO)
1467 global.tune.options |= GTUNE_USE_GAI;
1468#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001469#if defined(SO_REUSEPORT)
1470 global.tune.options |= GTUNE_USE_REUSEPORT;
1471#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02001472
1473 pid = getpid();
1474 progname = *argv;
1475 while ((tmp = strchr(progname, '/')) != NULL)
1476 progname = tmp + 1;
1477
Kevinm48936af2010-12-22 16:08:21 +00001478 /* the process name is used for the logs only */
Dragan Dosen43885c72015-10-01 13:18:13 +02001479 chunk_initstr(&global.log_tag, strdup(progname));
Kevinm48936af2010-12-22 16:08:21 +00001480
Willy Tarreaubaaee002006-06-26 02:48:02 +02001481 argc--; argv++;
1482 while (argc > 0) {
1483 char *flag;
1484
1485 if (**argv == '-') {
1486 flag = *argv+1;
1487
1488 /* 1 arg */
1489 if (*flag == 'v') {
1490 display_version();
Willy Tarreau7b066db2007-12-02 11:28:59 +01001491 if (flag[1] == 'v') /* -vv */
1492 display_build_opts();
Willy Tarreaubaaee002006-06-26 02:48:02 +02001493 exit(0);
1494 }
1495#if defined(ENABLE_EPOLL)
1496 else if (*flag == 'd' && flag[1] == 'e')
Willy Tarreau43b78992009-01-25 15:42:27 +01001497 global.tune.options &= ~GTUNE_USE_EPOLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001498#endif
1499#if defined(ENABLE_POLL)
1500 else if (*flag == 'd' && flag[1] == 'p')
Willy Tarreau43b78992009-01-25 15:42:27 +01001501 global.tune.options &= ~GTUNE_USE_POLL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001502#endif
Willy Tarreau69cad1a2007-04-10 22:45:11 +02001503#if defined(ENABLE_KQUEUE)
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001504 else if (*flag == 'd' && flag[1] == 'k')
Willy Tarreau43b78992009-01-25 15:42:27 +01001505 global.tune.options &= ~GTUNE_USE_KQUEUE;
Willy Tarreau1e63130a2007-04-09 12:03:06 +02001506#endif
Willy Tarreaub55932d2009-08-16 13:20:32 +02001507#if defined(CONFIG_HAP_LINUX_SPLICE)
Willy Tarreau3ab68cf2009-01-25 16:03:28 +01001508 else if (*flag == 'd' && flag[1] == 'S')
1509 global.tune.options &= ~GTUNE_USE_SPLICE;
1510#endif
Nenad Merdanovic88afe032014-04-14 15:56:58 +02001511#if defined(USE_GETADDRINFO)
1512 else if (*flag == 'd' && flag[1] == 'G')
1513 global.tune.options &= ~GTUNE_USE_GAI;
1514#endif
Lukas Tribusa0bcbdc2016-09-12 21:42:20 +00001515#if defined(SO_REUSEPORT)
1516 else if (*flag == 'd' && flag[1] == 'R')
1517 global.tune.options &= ~GTUNE_USE_REUSEPORT;
1518#endif
Emeric Brun850efd52014-01-29 12:24:34 +01001519 else if (*flag == 'd' && flag[1] == 'V')
1520 global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001521 else if (*flag == 'V')
1522 arg_mode |= MODE_VERBOSE;
1523 else if (*flag == 'd' && flag[1] == 'b')
1524 arg_mode |= MODE_FOREGROUND;
Willy Tarreau6e064432012-05-08 15:40:42 +02001525 else if (*flag == 'd' && flag[1] == 'M')
1526 mem_poison_byte = flag[2] ? strtol(flag + 2, NULL, 0) : 'P';
Willy Tarreau3eed10e2016-11-07 21:03:16 +01001527 else if (*flag == 'd' && flag[1] == 'r')
1528 global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001529 else if (*flag == 'd')
1530 arg_mode |= MODE_DEBUG;
1531 else if (*flag == 'c')
1532 arg_mode |= MODE_CHECK;
William Lallemand095ba4c2017-06-01 17:38:50 +02001533 else if (*flag == 'D')
Willy Tarreau6bde87b2009-05-18 16:29:51 +02001534 arg_mode |= MODE_DAEMON;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001535 else if (*flag == 'W' && flag[1] == 's') {
Lukas Tribusf46bf952017-11-21 12:39:34 +01001536 arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001537#if defined(USE_SYSTEMD)
1538 global.tune.options |= GTUNE_USE_SYSTEMD;
1539#else
Christopher Faulet767a84b2017-11-24 16:50:31 +01001540 ha_alert("master-worker mode with systemd support (-Ws) requested, but not compiled. Use master-worker mode (-W) if you are not using Type=notify in your unit file or recompile with USE_SYSTEMD=1.\n\n");
Tim Duesterhusd6942c82017-11-20 15:58:35 +01001541 usage(progname);
1542#endif
1543 }
William Lallemand095ba4c2017-06-01 17:38:50 +02001544 else if (*flag == 'W')
1545 arg_mode |= MODE_MWORKER;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001546 else if (*flag == 'q')
1547 arg_mode |= MODE_QUIET;
Olivier Houchardf73629d2017-04-05 22:33:04 +02001548 else if (*flag == 'x') {
William Lallemand45eff442017-06-19 15:57:55 +02001549 if (argc <= 1 || argv[1][0] == '-') {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001550 ha_alert("Unix socket path expected with the -x flag\n\n");
William Lallemand45eff442017-06-19 15:57:55 +02001551 usage(progname);
Olivier Houchardf73629d2017-04-05 22:33:04 +02001552 }
William Lallemand4fc09692017-06-19 16:37:19 +02001553 if (old_unixsocket)
Christopher Faulet767a84b2017-11-24 16:50:31 +01001554 ha_warning("-x option already set, overwriting the value\n");
Olivier Houchardf73629d2017-04-05 22:33:04 +02001555 old_unixsocket = argv[1];
William Lallemand4fc09692017-06-19 16:37:19 +02001556
Olivier Houchardf73629d2017-04-05 22:33:04 +02001557 argv++;
1558 argc--;
1559 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001560 else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
1561 /* list of pids to finish ('f') or terminate ('t') */
1562
1563 if (flag[1] == 'f')
1564 oldpids_sig = SIGUSR1; /* finish then exit */
1565 else
1566 oldpids_sig = SIGTERM; /* terminate immediately */
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001567 while (argc > 1 && argv[1][0] != '-') {
Chris Lane236062f2018-02-05 23:15:44 +00001568 char * endptr = NULL;
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001569 oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
1570 if (!oldpids) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001571 ha_alert("Cannot allocate old pid : out of memory.\n");
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001572 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001573 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001574 argc--; argv++;
Chris Lane236062f2018-02-05 23:15:44 +00001575 errno = 0;
1576 oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
1577 if (errno) {
1578 ha_alert("-%2s option: failed to parse {%s}: %s\n",
1579 flag,
1580 *argv, strerror(errno));
1581 exit(1);
1582 } else if (endptr && strlen(endptr)) {
1583 while (isspace(*endptr)) endptr++;
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001584 if (*endptr != 0) {
Chris Lane236062f2018-02-05 23:15:44 +00001585 ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
1586 flag, endptr);
1587 exit(1);
Aurélien Nephtali39b89882018-02-17 20:53:11 +01001588 }
Chris Lane236062f2018-02-05 23:15:44 +00001589 }
Willy Tarreauc6ca1aa2015-10-08 11:32:32 +02001590 if (oldpids[nb_oldpids] <= 0)
1591 usage(progname);
1592 nb_oldpids++;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001593 }
1594 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001595 else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
1596 /* now that's a cfgfile list */
1597 argv++; argc--;
1598 while (argc > 0) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02001599 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001600 ha_alert("Cannot load configuration file/directory %s : %s\n",
1601 *argv,
1602 err_msg);
Willy Tarreaua088d312015-10-08 11:58:48 +02001603 exit(1);
1604 }
Willy Tarreaua088d312015-10-08 11:58:48 +02001605 argv++; argc--;
1606 }
1607 break;
1608 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001609 else { /* >=2 args */
1610 argv++; argc--;
1611 if (argc == 0)
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001612 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001613
1614 switch (*flag) {
Willy Tarreau576132e2011-09-10 19:26:56 +02001615 case 'C' : change_dir = *argv; break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001616 case 'n' : cfg_maxconn = atol(*argv); break;
Willy Tarreau70060452015-12-14 12:46:07 +01001617 case 'm' : global.rlimit_memmax_all = atol(*argv); break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001618 case 'N' : cfg_maxpconn = atol(*argv); break;
William Lallemanddaf4cd22018-04-17 16:46:13 +02001619 case 'L' :
1620 strncpy(localpeer, *argv, sizeof(localpeer) - 1);
1621 setenv("HAPROXY_LOCALPEER", localpeer, 1);
1622 break;
Willy Tarreau5d01a632009-06-22 16:02:30 +02001623 case 'f' :
Maxime de Roucy0f503922016-05-13 23:52:55 +02001624 if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001625 ha_alert("Cannot load configuration file/directory %s : %s\n",
1626 *argv,
1627 err_msg);
Willy Tarreau5d01a632009-06-22 16:02:30 +02001628 exit(1);
1629 }
Willy Tarreau5d01a632009-06-22 16:02:30 +02001630 break;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001631 case 'p' : cfg_pidfile = *argv; break;
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001632 default: usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001633 }
1634 }
1635 }
1636 else
Willy Tarreau3bafcdc2011-09-10 19:20:23 +02001637 usage(progname);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001638 argv++; argc--;
1639 }
1640
Christopher Faulete3a5e352017-10-24 13:53:54 +02001641 global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
1642 | MODE_QUIET | MODE_CHECK | MODE_DEBUG));
Willy Tarreaubaaee002006-06-26 02:48:02 +02001643
William Lallemandcb11fd22017-06-01 17:38:52 +02001644 /* Master workers wait mode */
1645 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_WAIT_ONLY") != NULL)) {
1646
1647 unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
William Lallemandf9cc07c2018-09-11 10:06:25 +02001648 mworker_wait_mode();
William Lallemandcb11fd22017-06-01 17:38:52 +02001649 }
1650
1651 if ((global.mode & MODE_MWORKER) && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
1652 atexit_flag = 1;
1653 atexit(reexec_on_failure);
1654 }
1655
Willy Tarreau576132e2011-09-10 19:26:56 +02001656 if (change_dir && chdir(change_dir) < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001657 ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
Willy Tarreau576132e2011-09-10 19:26:56 +02001658 exit(1);
1659 }
1660
Maxime de Roucy379d9c72016-05-13 23:52:56 +02001661 /* handle cfgfiles that are actualy directories */
1662 cfgfiles_expand_directories();
1663
1664 if (LIST_ISEMPTY(&cfg_cfgfiles))
1665 usage(progname);
1666
Willy Tarreaubaaee002006-06-26 02:48:02 +02001667 global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001668
1669 init_default_instance();
1670
Willy Tarreau477ecd82010-01-03 21:12:30 +01001671 list_for_each_entry(wl, &cfg_cfgfiles, list) {
Willy Tarreauc4382422009-12-06 13:10:44 +01001672 int ret;
1673
Willy Tarreau477ecd82010-01-03 21:12:30 +01001674 ret = readcfgfile(wl->s);
Willy Tarreauc4382422009-12-06 13:10:44 +01001675 if (ret == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001676 ha_alert("Could not open configuration file %s : %s\n",
1677 wl->s, strerror(errno));
Willy Tarreauc4382422009-12-06 13:10:44 +01001678 exit(1);
1679 }
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001680 if (ret & (ERR_ABORT|ERR_FATAL))
Christopher Faulet767a84b2017-11-24 16:50:31 +01001681 ha_alert("Error(s) found in configuration file : %s\n", wl->s);
Willy Tarreau25a67fa2009-12-15 21:46:25 +01001682 err_code |= ret;
Willy Tarreau058e9072009-07-20 09:30:05 +02001683 if (err_code & ERR_ABORT)
Willy Tarreau5d01a632009-06-22 16:02:30 +02001684 exit(1);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001685 }
Krzysztof Oledzkib304dc72007-10-14 23:40:01 +02001686
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001687 /* do not try to resolve arguments nor to spot inconsistencies when
1688 * the configuration contains fatal errors caused by files not found
1689 * or failed memory allocations.
1690 */
1691 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001692 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreaub83dc3d2017-04-19 11:24:07 +02001693 exit(1);
1694 }
1695
Thierry FOURNIERaf5a29d2014-03-11 14:29:22 +01001696 pattern_finalize_config();
1697
Willy Tarreaubb925012009-07-23 13:36:36 +02001698 err_code |= check_config_validity();
1699 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001700 ha_alert("Fatal errors found in configuration.\n");
Willy Tarreau915e1eb2009-06-22 15:48:36 +02001701 exit(1);
1702 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001703
Willy Tarreau70060452015-12-14 12:46:07 +01001704 /* recompute the amount of per-process memory depending on nbproc and
1705 * the shared SSL cache size (allowed to exist in all processes).
1706 */
1707 if (global.rlimit_memmax_all) {
1708#if defined (USE_OPENSSL) && !defined(USE_PRIVATE_CACHE)
1709 int64_t ssl_cache_bytes = global.tune.sslcachesize * 200LL;
1710
1711 global.rlimit_memmax =
1712 ((((int64_t)global.rlimit_memmax_all * 1048576LL) -
1713 ssl_cache_bytes) / global.nbproc +
1714 ssl_cache_bytes + 1048575LL) / 1048576LL;
1715#else
1716 global.rlimit_memmax = global.rlimit_memmax_all / global.nbproc;
1717#endif
1718 }
1719
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001720#ifdef CONFIG_HAP_NS
1721 err_code |= netns_init();
1722 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001723 ha_alert("Failed to initialize namespace support.\n");
KOVACS Krisztianb3e54fe2014-11-17 15:11:45 +01001724 exit(1);
1725 }
1726#endif
1727
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001728 /* Apply server states */
1729 apply_server_state();
1730
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001731 for (px = proxies_list; px; px = px->next)
Baptiste Assmann4215d7d2016-11-02 15:33:15 +01001732 srv_compute_all_admin_states(px);
1733
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001734 /* Apply servers' configured address */
1735 err_code |= srv_init_addr();
1736 if (err_code & (ERR_ABORT|ERR_FATAL)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001737 ha_alert("Failed to initialize server(s) addr.\n");
Baptiste Assmann83cbaa52016-11-02 15:34:05 +01001738 exit(1);
1739 }
1740
Willy Tarreaubaaee002006-06-26 02:48:02 +02001741 if (global.mode & MODE_CHECK) {
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001742 struct peers *pr;
1743 struct proxy *px;
1744
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001745 for (pr = cfg_peers; pr; pr = pr->next)
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001746 if (pr->peers_fe)
1747 break;
1748
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001749 for (px = proxies_list; px; px = px->next)
Willy Tarreau4348fad2012-09-20 16:48:07 +02001750 if (px->state == PR_STNEW && !LIST_ISEMPTY(&px->conf.listeners))
Willy Tarreau8b15ba12012-02-02 17:48:18 +01001751 break;
1752
1753 if (pr || px) {
1754 /* At least one peer or one listener has been found */
1755 qfprintf(stdout, "Configuration file is valid\n");
1756 exit(0);
1757 }
1758 qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
1759 exit(2);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001760 }
1761
Emeric Brunc60def82017-09-27 14:59:38 +02001762 global_listener_queue_task = task_new(MAX_THREADS_MASK);
Willy Tarreaue9b26022011-08-01 20:57:55 +02001763 if (!global_listener_queue_task) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001764 ha_alert("Out of memory when initializing global task\n");
Willy Tarreaue9b26022011-08-01 20:57:55 +02001765 exit(1);
1766 }
1767 /* very simple initialization, users will queue the task if needed */
1768 global_listener_queue_task->context = NULL; /* not even a context! */
1769 global_listener_queue_task->process = manage_global_listener_queue;
Willy Tarreaue9b26022011-08-01 20:57:55 +02001770
Willy Tarreau8263d2b2012-08-28 00:06:31 +02001771 /* now we know the buffer size, we can initialize the channels and buffers */
Willy Tarreau9b28e032012-10-12 23:49:43 +02001772 init_buffer();
Willy Tarreau8280d642009-09-23 23:37:52 +02001773
Willy Tarreaue6945732016-12-21 19:57:00 +01001774 list_for_each_entry(pcf, &post_check_list, list) {
1775 err_code |= pcf->fct();
1776 if (err_code & (ERR_ABORT|ERR_FATAL))
1777 exit(1);
1778 }
1779
Willy Tarreaubaaee002006-06-26 02:48:02 +02001780 if (cfg_maxconn > 0)
1781 global.maxconn = cfg_maxconn;
1782
1783 if (cfg_pidfile) {
Willy Tarreaua534fea2008-08-03 12:19:50 +02001784 free(global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02001785 global.pidfile = strdup(cfg_pidfile);
1786 }
1787
Willy Tarreaud0256482015-01-15 21:45:22 +01001788 /* Now we want to compute the maxconn and possibly maxsslconn values.
1789 * It's a bit tricky. If memmax is not set, maxconn defaults to
1790 * DEFAULT_MAXCONN and maxsslconn defaults to DEFAULT_MAXSSLCONN.
1791 *
1792 * If memmax is set, then it depends on which values are set. If
1793 * maxsslconn is set, we use memmax to determine how many cleartext
1794 * connections may be added, and set maxconn to the sum of the two.
1795 * If maxconn is set and not maxsslconn, maxsslconn is computed from
1796 * the remaining amount of memory between memmax and the cleartext
1797 * connections. If neither are set, then it is considered that all
1798 * connections are SSL-capable, and maxconn is computed based on this,
1799 * then maxsslconn accordingly. We need to know if SSL is used on the
1800 * frontends, backends, or both, because when it's used on both sides,
1801 * we need twice the value for maxsslconn, but we only count the
1802 * handshake once since it is not performed on the two sides at the
1803 * same time (frontend-side is terminated before backend-side begins).
1804 * The SSL stack is supposed to have filled ssl_session_cost and
Willy Tarreau474b96a2015-01-28 19:03:21 +01001805 * ssl_handshake_cost during its initialization. In any case, if
1806 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
1807 * maxconn in order to protect the system.
Willy Tarreaud0256482015-01-15 21:45:22 +01001808 */
1809 if (!global.rlimit_memmax) {
1810 if (global.maxconn == 0) {
1811 global.maxconn = DEFAULT_MAXCONN;
1812 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1813 fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
1814 }
1815 }
1816#ifdef USE_OPENSSL
1817 else if (!global.maxconn && !global.maxsslconn &&
1818 (global.ssl_used_frontend || global.ssl_used_backend)) {
1819 /* memmax is set, compute everything automatically. Here we want
1820 * to ensure that all SSL connections will be served. We take
1821 * care of the number of sides where SSL is used, and consider
1822 * the worst case : SSL used on both sides and doing a handshake
1823 * simultaneously. Note that we can't have more than maxconn
1824 * handshakes at a time by definition, so for the worst case of
1825 * two SSL conns per connection, we count a single handshake.
1826 */
1827 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1828 int64_t mem = global.rlimit_memmax * 1048576ULL;
1829
1830 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1831 mem -= global.maxzlibmem;
1832 mem = mem * MEM_USABLE_RATIO;
1833
1834 global.maxconn = mem /
Willy Tarreau87b09662015-04-03 00:22:06 +02001835 ((STREAM_MAX_COST + 2 * global.tune.bufsize) + // stream + 2 buffers per stream
Willy Tarreaud0256482015-01-15 21:45:22 +01001836 sides * global.ssl_session_max_cost + // SSL buffers, one per side
1837 global.ssl_handshake_max_cost); // 1 handshake per connection max
1838
1839 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001840#ifdef SYSTEM_MAXCONN
1841 if (global.maxconn > DEFAULT_MAXCONN)
1842 global.maxconn = DEFAULT_MAXCONN;
1843#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001844 global.maxsslconn = sides * global.maxconn;
1845 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1846 fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
1847 global.maxconn, global.maxsslconn);
1848 }
1849 else if (!global.maxsslconn &&
1850 (global.ssl_used_frontend || global.ssl_used_backend)) {
1851 /* memmax and maxconn are known, compute maxsslconn automatically.
1852 * maxsslconn being forced, we don't know how many of it will be
1853 * on each side if both sides are being used. The worst case is
1854 * when all connections use only one SSL instance because
1855 * handshakes may be on two sides at the same time.
1856 */
1857 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1858 int64_t mem = global.rlimit_memmax * 1048576ULL;
1859 int64_t sslmem;
1860
1861 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1862 mem -= global.maxzlibmem;
1863 mem = mem * MEM_USABLE_RATIO;
1864
Willy Tarreau87b09662015-04-03 00:22:06 +02001865 sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001866 global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
1867 global.maxsslconn = round_2dig(global.maxsslconn);
1868
1869 if (sslmem <= 0 || global.maxsslconn < sides) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001870 ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
1871 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1872 "without SSL is %d, but %d was found and SSL is in use.\n",
1873 global.rlimit_memmax,
1874 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
1875 global.maxconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001876 exit(1);
1877 }
1878
1879 if (global.maxsslconn > sides * global.maxconn)
1880 global.maxsslconn = sides * global.maxconn;
1881
1882 if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
1883 fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
1884 }
1885#endif
1886 else if (!global.maxconn) {
1887 /* memmax and maxsslconn are known/unused, compute maxconn automatically */
1888 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1889 int64_t mem = global.rlimit_memmax * 1048576ULL;
1890 int64_t clearmem;
1891
1892 if (global.ssl_used_frontend || global.ssl_used_backend)
1893 mem -= global.tune.sslcachesize * 200; // about 200 bytes per SSL cache entry
1894
1895 mem -= global.maxzlibmem;
1896 mem = mem * MEM_USABLE_RATIO;
1897
1898 clearmem = mem;
1899 if (sides)
1900 clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
1901
Willy Tarreau87b09662015-04-03 00:22:06 +02001902 global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
Willy Tarreaud0256482015-01-15 21:45:22 +01001903 global.maxconn = round_2dig(global.maxconn);
Willy Tarreau474b96a2015-01-28 19:03:21 +01001904#ifdef SYSTEM_MAXCONN
1905 if (global.maxconn > DEFAULT_MAXCONN)
1906 global.maxconn = DEFAULT_MAXCONN;
1907#endif /* SYSTEM_MAXCONN */
Willy Tarreaud0256482015-01-15 21:45:22 +01001908
1909 if (clearmem <= 0 || !global.maxconn) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01001910 ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
1911 "high for the global.memmax value (%d MB). The absolute maximum possible value "
1912 "is %d, but %d was found.\n",
1913 global.rlimit_memmax,
1914 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
1915 global.maxsslconn);
Willy Tarreaud0256482015-01-15 21:45:22 +01001916 exit(1);
1917 }
1918
1919 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
1920 if (sides && global.maxsslconn > sides * global.maxconn) {
1921 fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
1922 "to be limited to %d. Better reduce global.maxsslconn to get more "
1923 "room for extra connections.\n", global.maxsslconn, global.maxconn);
1924 }
1925 fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
1926 }
1927 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001928
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001929 if (!global.maxpipes) {
1930 /* maxpipes not specified. Count how many frontends and backends
1931 * may be using splicing, and bound that to maxconn.
1932 */
1933 struct proxy *cur;
1934 int nbfe = 0, nbbe = 0;
1935
Olivier Houchardfbc74e82017-11-24 16:54:05 +01001936 for (cur = proxies_list; cur; cur = cur->next) {
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001937 if (cur->options2 & (PR_O2_SPLIC_ANY)) {
1938 if (cur->cap & PR_CAP_FE)
1939 nbfe += cur->maxconn;
1940 if (cur->cap & PR_CAP_BE)
Willy Tarreauafb48762009-01-25 10:42:05 +01001941 nbbe += cur->fullconn ? cur->fullconn : global.maxconn;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001942 }
1943 }
1944 global.maxpipes = MAX(nbfe, nbbe);
1945 if (global.maxpipes > global.maxconn)
1946 global.maxpipes = global.maxconn;
Willy Tarreau686ac822009-01-25 14:06:58 +01001947 global.maxpipes /= 4;
Willy Tarreau66aa61f2009-01-18 21:44:07 +01001948 }
1949
1950
Willy Tarreauabacc2c2011-09-07 14:26:33 +02001951 global.hardmaxconn = global.maxconn; /* keep this max value */
Willy Tarreaubaaee002006-06-26 02:48:02 +02001952 global.maxsock += global.maxconn * 2; /* each connection needs two sockets */
Willy Tarreau3ec79b92009-01-18 20:39:42 +01001953 global.maxsock += global.maxpipes * 2; /* each pipe needs two FDs */
Emeric Brunece0c332017-12-06 13:51:49 +01001954 /* compute fd used by async engines */
1955 if (global.ssl_used_async_engines) {
1956 int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
1957 global.maxsock += global.maxconn * sides * global.ssl_used_async_engines;
1958 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02001959
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001960 if (global.stats_fe)
1961 global.maxsock += global.stats_fe->maxconn;
1962
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001963 if (cfg_peers) {
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001964 /* peers also need to bypass global maxconn */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001965 struct peers *p = cfg_peers;
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001966
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02001967 for (p = cfg_peers; p; p = p->next)
Willy Tarreau3c63fd82011-09-07 18:00:47 +02001968 if (p->peers_fe)
1969 global.maxsock += p->peers_fe->maxconn;
1970 }
1971
Willy Tarreau1db37712007-06-03 17:16:49 +02001972 if (global.tune.maxpollevents <= 0)
1973 global.tune.maxpollevents = MAX_POLL_EVENTS;
1974
Olivier Houchard1599b802018-05-24 18:59:04 +02001975 if (global.tune.runqueue_depth <= 0)
1976 global.tune.runqueue_depth = RUNQUEUE_DEPTH;
1977
Willy Tarreau6f4a82c2009-03-21 20:43:57 +01001978 if (global.tune.recv_enough == 0)
1979 global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
1980
Willy Tarreau27097842015-09-28 13:53:23 +02001981 if (global.tune.maxrewrite < 0)
1982 global.tune.maxrewrite = MAXREWRITE;
1983
Willy Tarreau27a674e2009-08-17 07:23:33 +02001984 if (global.tune.maxrewrite >= global.tune.bufsize / 2)
1985 global.tune.maxrewrite = global.tune.bufsize / 2;
1986
Willy Tarreaubaaee002006-06-26 02:48:02 +02001987 if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
1988 /* command line debug mode inhibits configuration mode */
William Lallemand095ba4c2017-06-01 17:38:50 +02001989 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001990 global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
1991 }
1992
William Lallemand095ba4c2017-06-01 17:38:50 +02001993 if (arg_mode & MODE_DAEMON) {
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001994 /* command line daemon mode inhibits foreground and debug modes mode */
1995 global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
William Lallemand095ba4c2017-06-01 17:38:50 +02001996 global.mode |= arg_mode & MODE_DAEMON;
Willy Tarreaubaaee002006-06-26 02:48:02 +02001997 }
Willy Tarreau772f0dd2012-10-26 16:04:28 +02001998
1999 global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002000
William Lallemand095ba4c2017-06-01 17:38:50 +02002001 if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002002 ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
William Lallemand095ba4c2017-06-01 17:38:50 +02002003 global.mode &= ~(MODE_DAEMON | MODE_QUIET);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002004 }
2005
William Lallemand095ba4c2017-06-01 17:38:50 +02002006 if ((global.nbproc > 1) && !(global.mode & (MODE_DAEMON | MODE_MWORKER))) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002007 if (!(global.mode & (MODE_FOREGROUND | MODE_DEBUG)))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002008 ha_warning("<nbproc> is only meaningful in daemon mode or master-worker mode. Setting limit to 1 process.\n");
Willy Tarreaubaaee002006-06-26 02:48:02 +02002009 global.nbproc = 1;
2010 }
2011
2012 if (global.nbproc < 1)
2013 global.nbproc = 1;
2014
Christopher Fauletbe0faa22017-08-29 15:37:10 +02002015 if (global.nbthread < 1)
2016 global.nbthread = 1;
2017
Christopher Faulet3ef26392017-08-29 16:46:57 +02002018 /* Realloc trash buffers because global.tune.bufsize may have changed */
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002019 if (!init_trash_buffers(0)) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002020 ha_alert("failed to initialize trash buffers.\n");
Christopher Faulet3ef26392017-08-29 16:46:57 +02002021 exit(1);
2022 }
2023
Christopher Faulet96d44832017-11-14 22:02:30 +01002024 if (!init_log_buffers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002025 ha_alert("failed to initialize log buffers.\n");
Christopher Faulet96d44832017-11-14 22:02:30 +01002026 exit(1);
2027 }
2028
Willy Tarreauef1d1f82007-04-16 00:25:25 +02002029 /*
2030 * Note: we could register external pollers here.
2031 * Built-in pollers have been registered before main().
2032 */
Willy Tarreau4f60f162007-04-08 16:39:58 +02002033
Willy Tarreau43b78992009-01-25 15:42:27 +01002034 if (!(global.tune.options & GTUNE_USE_KQUEUE))
Willy Tarreau1e63130a2007-04-09 12:03:06 +02002035 disable_poller("kqueue");
2036
Willy Tarreau43b78992009-01-25 15:42:27 +01002037 if (!(global.tune.options & GTUNE_USE_EPOLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002038 disable_poller("epoll");
2039
Willy Tarreau43b78992009-01-25 15:42:27 +01002040 if (!(global.tune.options & GTUNE_USE_POLL))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002041 disable_poller("poll");
2042
Willy Tarreau43b78992009-01-25 15:42:27 +01002043 if (!(global.tune.options & GTUNE_USE_SELECT))
Willy Tarreau4f60f162007-04-08 16:39:58 +02002044 disable_poller("select");
2045
2046 /* Note: we could disable any poller by name here */
2047
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002048 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
Willy Tarreau2ff76222007-04-09 19:29:56 +02002049 list_pollers(stderr);
Christopher Fauletb3f4e142016-03-07 12:46:38 +01002050 fprintf(stderr, "\n");
2051 list_filters(stderr);
2052 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002053
Willy Tarreau4f60f162007-04-08 16:39:58 +02002054 if (!init_pollers()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002055 ha_alert("No polling mechanism available.\n"
2056 " It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
2057 " is too low on this platform to support maxconn and the number of listeners\n"
2058 " and servers. You should rebuild haproxy specifying your system using TARGET=\n"
2059 " in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
2060 " global maxconn setting to accommodate the system's limitation. For reference,\n"
2061 " FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
2062 " %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
2063 " check build settings using 'haproxy -vv'.\n\n",
2064 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002065 exit(1);
2066 }
Willy Tarreau2ff76222007-04-09 19:29:56 +02002067 if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
2068 printf("Using %s() as the polling mechanism.\n", cur_poller.name);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002069 }
2070
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002071 if (!global.node)
2072 global.node = strdup(hostname);
2073
Thierry FOURNIERa4a0f3d2015-01-23 12:08:30 +01002074 if (!hlua_post_init())
2075 exit(1);
Thomas Holmes6abded42015-05-12 16:23:58 +01002076
Maxime de Roucy0f503922016-05-13 23:52:55 +02002077 free(err_msg);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002078}
2079
Simon Horman6fb82592011-07-15 13:14:11 +09002080static void deinit_acl_cond(struct acl_cond *cond)
Simon Hormanac821422011-07-15 13:14:09 +09002081{
Simon Hormanac821422011-07-15 13:14:09 +09002082 struct acl_term_suite *suite, *suiteb;
2083 struct acl_term *term, *termb;
2084
Simon Horman6fb82592011-07-15 13:14:11 +09002085 if (!cond)
2086 return;
2087
2088 list_for_each_entry_safe(suite, suiteb, &cond->suites, list) {
2089 list_for_each_entry_safe(term, termb, &suite->terms, list) {
2090 LIST_DEL(&term->list);
2091 free(term);
Simon Hormanac821422011-07-15 13:14:09 +09002092 }
Simon Horman6fb82592011-07-15 13:14:11 +09002093 LIST_DEL(&suite->list);
2094 free(suite);
2095 }
2096
2097 free(cond);
2098}
2099
2100static void deinit_tcp_rules(struct list *rules)
2101{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +02002102 struct act_rule *trule, *truleb;
Simon Horman6fb82592011-07-15 13:14:11 +09002103
2104 list_for_each_entry_safe(trule, truleb, rules, list) {
Simon Hormanac821422011-07-15 13:14:09 +09002105 LIST_DEL(&trule->list);
Simon Horman6fb82592011-07-15 13:14:11 +09002106 deinit_acl_cond(trule->cond);
Simon Hormanac821422011-07-15 13:14:09 +09002107 free(trule);
2108 }
2109}
2110
Simon Horman6fb82592011-07-15 13:14:11 +09002111static void deinit_stick_rules(struct list *rules)
2112{
2113 struct sticking_rule *rule, *ruleb;
2114
2115 list_for_each_entry_safe(rule, ruleb, rules, list) {
2116 LIST_DEL(&rule->list);
2117 deinit_acl_cond(rule->cond);
Christopher Faulet476e5d02016-10-26 11:34:47 +02002118 release_sample_expr(rule->expr);
Simon Horman6fb82592011-07-15 13:14:11 +09002119 free(rule);
2120 }
2121}
2122
Cyril Bonté203ec5a2017-03-23 22:44:13 +01002123void deinit(void)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002124{
Olivier Houchardfbc74e82017-11-24 16:54:05 +01002125 struct proxy *p = proxies_list, *p0;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002126 struct cap_hdr *h,*h_next;
2127 struct server *s,*s_next;
2128 struct listener *l,*l_next;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002129 struct acl_cond *cond, *condb;
2130 struct hdr_exp *exp, *expb;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002131 struct acl *acl, *aclb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002132 struct switching_rule *rule, *ruleb;
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002133 struct server_rule *srule, *sruleb;
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002134 struct redirect_rule *rdr, *rdrb;
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002135 struct wordlist *wl, *wlb;
Willy Tarreauf4f04122010-01-28 18:10:50 +01002136 struct cond_wordlist *cwl, *cwlb;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002137 struct uri_auth *uap, *ua = NULL;
William Lallemand0f99e342011-10-12 17:50:54 +02002138 struct logsrv *log, *logb;
William Lallemand723b73a2012-02-08 16:37:49 +01002139 struct logformat_node *lf, *lfb;
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002140 struct bind_conf *bind_conf, *bind_back;
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002141 struct build_opts_str *bol, *bolb;
Willy Tarreau05554e62016-12-21 20:46:26 +01002142 struct post_deinit_fct *pdf;
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002143 int i;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002144
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002145 deinit_signals();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002146 while (p) {
Willy Tarreau8113a5d2012-10-04 08:01:43 +02002147 free(p->conf.file);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002148 free(p->id);
2149 free(p->check_req);
2150 free(p->cookie_name);
2151 free(p->cookie_domain);
2152 free(p->url_param_name);
2153 free(p->capture_name);
2154 free(p->monitor_uri);
Simon Hormana31c7f72011-07-15 13:14:08 +09002155 free(p->rdp_cookie_name);
Willy Tarreau62a61232013-04-12 18:13:46 +02002156 if (p->conf.logformat_string != default_http_log_format &&
2157 p->conf.logformat_string != default_tcp_log_format &&
2158 p->conf.logformat_string != clf_http_log_format)
2159 free(p->conf.logformat_string);
Willy Tarreau196729e2012-05-31 19:30:26 +02002160
Willy Tarreau62a61232013-04-12 18:13:46 +02002161 free(p->conf.lfs_file);
2162 free(p->conf.uniqueid_format_string);
2163 free(p->conf.uif_file);
Godbachaf1a75d2013-10-02 17:10:11 +08002164 free(p->lbprm.map.srv);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002165
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002166 if (p->conf.logformat_sd_string != default_rfc5424_sd_log_format)
2167 free(p->conf.logformat_sd_string);
2168 free(p->conf.lfsd_file);
2169
Willy Tarreaua534fea2008-08-03 12:19:50 +02002170 for (i = 0; i < HTTP_ERR_SIZE; i++)
Krzysztof Piotr Oledzki78abe612009-09-27 13:23:20 +02002171 chunk_destroy(&p->errmsg[i]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002172
Willy Tarreauf4f04122010-01-28 18:10:50 +01002173 list_for_each_entry_safe(cwl, cwlb, &p->req_add, list) {
2174 LIST_DEL(&cwl->list);
2175 free(cwl->s);
2176 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002177 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002178
Willy Tarreauf4f04122010-01-28 18:10:50 +01002179 list_for_each_entry_safe(cwl, cwlb, &p->rsp_add, list) {
2180 LIST_DEL(&cwl->list);
2181 free(cwl->s);
2182 free(cwl);
Willy Tarreaudeb9ed82010-01-03 21:03:22 +01002183 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002184
Willy Tarreaub80c2302007-11-30 20:51:32 +01002185 list_for_each_entry_safe(cond, condb, &p->mon_fail_cond, list) {
2186 LIST_DEL(&cond->list);
2187 prune_acl_cond(cond);
2188 free(cond);
2189 }
2190
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002191 for (exp = p->req_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002192 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002193 regex_free(exp->preg);
2194 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002195 }
2196
Willy Tarreau98d04852015-05-26 12:18:29 +02002197 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002198 expb = exp;
2199 exp = exp->next;
2200 free(expb);
2201 }
2202
2203 for (exp = p->rsp_exp; exp != NULL; ) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002204 if (exp->preg) {
Thierry FOURNIER09af0d62014-06-18 11:35:54 +02002205 regex_free(exp->preg);
2206 free(exp->preg);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002207 }
2208
Willy Tarreau98d04852015-05-26 12:18:29 +02002209 free((char *)exp->replace);
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002210 expb = exp;
2211 exp = exp->next;
2212 free(expb);
2213 }
2214
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002215 /* build a list of unique uri_auths */
2216 if (!ua)
2217 ua = p->uri_auth;
2218 else {
2219 /* check if p->uri_auth is unique */
2220 for (uap = ua; uap; uap=uap->next)
2221 if (uap == p->uri_auth)
2222 break;
2223
Willy Tarreauaccc4e12008-06-24 11:14:45 +02002224 if (!uap && p->uri_auth) {
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002225 /* add it, if it is */
2226 p->uri_auth->next = ua;
2227 ua = p->uri_auth;
2228 }
2229 }
Willy Tarreau0fc45a72007-06-17 00:36:03 +02002230
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002231 list_for_each_entry_safe(acl, aclb, &p->acl, list) {
2232 LIST_DEL(&acl->list);
2233 prune_acl(acl);
2234 free(acl);
2235 }
2236
Willy Tarreau4a5cade2012-04-05 21:09:48 +02002237 list_for_each_entry_safe(srule, sruleb, &p->server_rules, list) {
2238 LIST_DEL(&srule->list);
2239 prune_acl_cond(srule->cond);
2240 free(srule->cond);
2241 free(srule);
2242 }
2243
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002244 list_for_each_entry_safe(rule, ruleb, &p->switching_rules, list) {
2245 LIST_DEL(&rule->list);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002246 if (rule->cond) {
2247 prune_acl_cond(rule->cond);
2248 free(rule->cond);
Thierry FOURNIER / OZON.IO4ed1c952016-11-24 23:57:54 +01002249 free(rule->file);
Willy Tarreauf51658d2014-04-23 01:21:56 +02002250 }
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002251 free(rule);
2252 }
2253
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002254 list_for_each_entry_safe(rdr, rdrb, &p->redirect_rules, list) {
2255 LIST_DEL(&rdr->list);
Willy Tarreauf285f542010-01-03 20:03:03 +01002256 if (rdr->cond) {
2257 prune_acl_cond(rdr->cond);
2258 free(rdr->cond);
2259 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002260 free(rdr->rdr_str);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +01002261 list_for_each_entry_safe(lf, lfb, &rdr->rdr_fmt, list) {
2262 LIST_DEL(&lf->list);
2263 free(lf);
2264 }
Willy Tarreaub463dfb2008-06-07 23:08:56 +02002265 free(rdr);
2266 }
2267
William Lallemand0f99e342011-10-12 17:50:54 +02002268 list_for_each_entry_safe(log, logb, &p->logsrvs, list) {
2269 LIST_DEL(&log->list);
2270 free(log);
2271 }
2272
William Lallemand723b73a2012-02-08 16:37:49 +01002273 list_for_each_entry_safe(lf, lfb, &p->logformat, list) {
2274 LIST_DEL(&lf->list);
2275 free(lf);
2276 }
2277
Dragan Dosen0b85ece2015-09-25 19:17:44 +02002278 list_for_each_entry_safe(lf, lfb, &p->logformat_sd, list) {
2279 LIST_DEL(&lf->list);
2280 free(lf);
2281 }
2282
Simon Hormanac821422011-07-15 13:14:09 +09002283 deinit_tcp_rules(&p->tcp_req.inspect_rules);
2284 deinit_tcp_rules(&p->tcp_req.l4_rules);
2285
Simon Horman6fb82592011-07-15 13:14:11 +09002286 deinit_stick_rules(&p->storersp_rules);
2287 deinit_stick_rules(&p->sticking_rules);
2288
Willy Tarreaubaaee002006-06-26 02:48:02 +02002289 h = p->req_cap;
2290 while (h) {
2291 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002292 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002293 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002294 free(h);
2295 h = h_next;
2296 }/* end while(h) */
2297
2298 h = p->rsp_cap;
2299 while (h) {
2300 h_next = h->next;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002301 free(h->name);
Willy Tarreaubafbe012017-11-24 17:34:44 +01002302 pool_destroy(h->pool);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002303 free(h);
2304 h = h_next;
2305 }/* end while(h) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002306
Willy Tarreaubaaee002006-06-26 02:48:02 +02002307 s = p->srv;
2308 while (s) {
2309 s_next = s->next;
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002310
Willy Tarreau5b3a2022012-09-28 15:01:02 +02002311 if (s->check.task) {
2312 task_delete(s->check.task);
2313 task_free(s->check.task);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002314 }
Simon Hormand60d6912013-11-25 10:46:36 +09002315 if (s->agent.task) {
2316 task_delete(s->agent.task);
2317 task_free(s->agent.task);
2318 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002319
Willy Tarreau2e993902011-10-31 11:53:20 +01002320 if (s->warmup) {
2321 task_delete(s->warmup);
2322 task_free(s->warmup);
2323 }
2324
Willy Tarreaua534fea2008-08-03 12:19:50 +02002325 free(s->id);
2326 free(s->cookie);
Willy Tarreauc9fa0482018-07-10 17:43:27 +02002327 free(s->check.bi.area);
2328 free(s->check.bo.area);
2329 free(s->agent.bi.area);
2330 free(s->agent.bo.area);
James Brown55f9ff12015-10-21 18:19:05 -07002331 free(s->agent.send_string);
Christopher Faulet67957bd2017-09-27 11:00:59 +02002332 free(s->hostname_dn);
Sárközi, László34c01792014-09-05 10:08:23 +02002333 free((char*)s->conf.file);
Willy Tarreau17d45382016-12-22 21:16:08 +01002334
2335 if (s->use_ssl || s->check.use_ssl) {
2336 if (xprt_get(XPRT_SSL) && xprt_get(XPRT_SSL)->destroy_srv)
2337 xprt_get(XPRT_SSL)->destroy_srv(s);
2338 }
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002339 HA_SPIN_DESTROY(&s->lock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002340 free(s);
2341 s = s_next;
2342 }/* end while(s) */
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002343
Willy Tarreau4348fad2012-09-20 16:48:07 +02002344 list_for_each_entry_safe(l, l_next, &p->conf.listeners, by_fe) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02002345 /*
2346 * Zombie proxy, the listener just pretend to be up
2347 * because they still hold an opened fd.
2348 * Close it and give the listener its real state.
2349 */
2350 if (p->state == PR_STSTOPPED && l->state >= LI_ZOMBIE) {
2351 close(l->fd);
2352 l->state = LI_INIT;
2353 }
Willy Tarreauf6e2cc72010-09-03 10:38:17 +02002354 unbind_listener(l);
2355 delete_listener(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002356 LIST_DEL(&l->by_fe);
2357 LIST_DEL(&l->by_bind);
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002358 free(l->name);
2359 free(l->counters);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002360 free(l);
Willy Tarreau4348fad2012-09-20 16:48:07 +02002361 }
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002362
Willy Tarreau4348fad2012-09-20 16:48:07 +02002363 /* Release unused SSL configs. */
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002364 list_for_each_entry_safe(bind_conf, bind_back, &p->conf.bind, by_fe) {
Willy Tarreau795cdab2016-12-22 17:30:54 +01002365 if (bind_conf->xprt->destroy_bind_conf)
2366 bind_conf->xprt->destroy_bind_conf(bind_conf);
Willy Tarreau2a65ff02012-09-13 17:54:29 +02002367 free(bind_conf->file);
2368 free(bind_conf->arg);
2369 LIST_DEL(&bind_conf->by_fe);
2370 free(bind_conf);
2371 }
Willy Tarreauf5ae8f72012-09-07 16:58:00 +02002372
Christopher Fauletd7c91962015-04-30 11:48:27 +02002373 flt_deinit(p);
2374
Krzysztof Piotr Oledzkiaff01ea2010-02-05 20:31:44 +01002375 free(p->desc);
2376 free(p->fwdfor_hdr_name);
2377
Willy Tarreauff011f22011-01-06 17:51:27 +01002378 free_http_req_rules(&p->http_req_rules);
Sasha Pachev218f0642014-06-16 12:05:59 -06002379 free_http_res_rules(&p->http_res_rules);
Willy Tarreau1f89b182017-11-22 16:53:53 +01002380 task_free(p->task);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +01002381
Willy Tarreaubafbe012017-11-24 17:34:44 +01002382 pool_destroy(p->req_cap_pool);
2383 pool_destroy(p->rsp_cap_pool);
2384 pool_destroy(p->table.pool);
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002385
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002386 p0 = p;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002387 p = p->next;
Christopher Faulet2a944ee2017-11-07 10:42:54 +01002388 HA_SPIN_DESTROY(&p0->lbprm.lock);
2389 HA_SPIN_DESTROY(&p0->lock);
Willy Tarreau4d2d0982007-05-14 00:39:29 +02002390 free(p0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002391 }/* end while(p) */
Willy Tarreaudd815982007-10-16 12:25:14 +02002392
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002393 while (ua) {
2394 uap = ua;
2395 ua = ua->next;
2396
Willy Tarreaua534fea2008-08-03 12:19:50 +02002397 free(uap->uri_prefix);
2398 free(uap->auth_realm);
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002399 free(uap->node);
2400 free(uap->desc);
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002401
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002402 userlist_free(uap->userlist);
Willy Tarreauff011f22011-01-06 17:51:27 +01002403 free_http_req_rules(&uap->http_req_rules);
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +01002404
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002405 free(uap);
2406 }
2407
Krzysztof Piotr Oledzki96105042010-01-29 17:50:44 +01002408 userlist_free(userlist);
2409
David Carlier834cb2e2015-09-25 12:02:25 +01002410 cfg_unregister_sections();
2411
Christopher Faulet0132d062017-07-26 15:33:35 +02002412 deinit_log_buffers();
Christopher Faulet748919a2017-07-26 14:59:46 +02002413 deinit_trash_buffers();
David Carlier834cb2e2015-09-25 12:02:25 +01002414
Willy Tarreaudd815982007-10-16 12:25:14 +02002415 protocol_unbind_all();
2416
Willy Tarreau05554e62016-12-21 20:46:26 +01002417 list_for_each_entry(pdf, &post_deinit_list, list)
2418 pdf->fct();
2419
Joe Williamsdf5b38f2010-12-29 17:05:48 +01002420 free(global.log_send_hostname); global.log_send_hostname = NULL;
Dragan Dosen43885c72015-10-01 13:18:13 +02002421 chunk_destroy(&global.log_tag);
Willy Tarreaua534fea2008-08-03 12:19:50 +02002422 free(global.chroot); global.chroot = NULL;
2423 free(global.pidfile); global.pidfile = NULL;
Krzysztof Piotr Oledzki48cb2ae2009-10-02 22:51:14 +02002424 free(global.node); global.node = NULL;
2425 free(global.desc); global.desc = NULL;
Willy Tarreaua534fea2008-08-03 12:19:50 +02002426 free(oldpids); oldpids = NULL;
Willy Tarreau1f89b182017-11-22 16:53:53 +01002427 task_free(global_listener_queue_task); global_listener_queue_task = NULL;
Krzysztof Piotr Oledzki8001d612008-05-31 13:53:23 +02002428
William Lallemand0f99e342011-10-12 17:50:54 +02002429 list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
2430 LIST_DEL(&log->list);
2431 free(log);
2432 }
Willy Tarreau477ecd82010-01-03 21:12:30 +01002433 list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
Maxime de Roucy0f503922016-05-13 23:52:55 +02002434 free(wl->s);
Willy Tarreau477ecd82010-01-03 21:12:30 +01002435 LIST_DEL(&wl->list);
2436 free(wl);
2437 }
2438
Willy Tarreaucdb737e2016-12-21 18:43:10 +01002439 list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
2440 if (bol->must_free)
2441 free((void *)bol->str);
2442 LIST_DEL(&bol->list);
2443 free(bol);
2444 }
2445
Christopher Fauletff2613e2016-11-09 11:36:17 +01002446 vars_prune(&global.vars, NULL, NULL);
2447
Christopher Fauletad405f12017-08-29 15:30:11 +02002448 deinit_buffer();
2449
Willy Tarreaubafbe012017-11-24 17:34:44 +01002450 pool_destroy(pool_head_stream);
2451 pool_destroy(pool_head_session);
2452 pool_destroy(pool_head_connection);
2453 pool_destroy(pool_head_connstream);
2454 pool_destroy(pool_head_requri);
2455 pool_destroy(pool_head_task);
2456 pool_destroy(pool_head_capture);
2457 pool_destroy(pool_head_pendconn);
2458 pool_destroy(pool_head_sig_handlers);
2459 pool_destroy(pool_head_hdr_idx);
2460 pool_destroy(pool_head_http_txn);
Krzysztof Piotr Oledzkia643baf2008-05-29 23:53:44 +02002461 deinit_pollers();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002462} /* end deinit() */
2463
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002464void mworker_pipe_handler(int fd)
2465{
2466 char c;
2467
2468 while (read(fd, &c, 1) == -1) {
2469 if (errno == EINTR)
2470 continue;
2471 if (errno == EAGAIN) {
2472 fd_cant_recv(fd);
2473 return;
2474 }
2475 break;
2476 }
2477
2478 deinit();
2479 exit(EXIT_FAILURE);
2480 return;
2481}
2482
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002483/* should only be called once per process */
2484void mworker_pipe_register()
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002485{
William Lallemandbc193052018-09-11 10:06:26 +02002486 if (fdtab[proc_self->ipc_fd[1]].owner)
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002487 /* already initialized */
2488 return;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002489
William Lallemandbc193052018-09-11 10:06:26 +02002490 fcntl(proc_self->ipc_fd[1], F_SETFL, O_NONBLOCK);
2491 fd_insert(proc_self->ipc_fd[1], proc_self->ipc_fd, mworker_pipe_handler, MAX_THREADS_MASK);
2492 fd_want_recv(proc_self->ipc_fd[1]);
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002493}
Christopher Fauletdc628a32017-10-19 11:59:44 +02002494
Willy Tarreau918ff602011-07-25 16:33:49 +02002495/* Runs the polling loop */
Willy Tarreau1b5af7c2016-12-21 18:19:57 +01002496static void run_poll_loop()
Willy Tarreau4f60f162007-04-08 16:39:58 +02002497{
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002498 int next, exp;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002499
Willy Tarreaub0b37bc2008-06-23 14:00:57 +02002500 tv_update_date(0,1);
Willy Tarreau4f60f162007-04-08 16:39:58 +02002501 while (1) {
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002502 /* Process a few tasks */
2503 process_runnable_tasks();
2504
William Lallemand1aab50b2018-06-07 09:46:01 +02002505 /* check if we caught some signals and process them in the
2506 first thread */
2507 if (tid == 0)
2508 signal_process_queue();
Willy Tarreau29857942009-05-10 09:01:21 +02002509
Willy Tarreau58b458d2008-06-29 22:40:23 +02002510 /* Check if we can expire some tasks */
Thierry FOURNIER9cf7c4b2014-12-15 13:26:01 +01002511 next = wake_expired_tasks();
Willy Tarreau4f60f162007-04-08 16:39:58 +02002512
Willy Tarreau85c459d2018-08-02 10:54:31 +02002513 /* stop when there's nothing left to do */
2514 if (jobs == 0)
2515 break;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002516
Willy Tarreau10146c92015-04-13 20:44:19 +02002517 /* expire immediately if events are pending */
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002518 exp = now_ms;
Christopher Faulet32467fe2018-01-15 12:16:34 +01002519 if (fd_cache_mask & tid_bit)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002520 activity[tid].wake_cache++;
2521 else if (active_tasks_mask & tid_bit)
2522 activity[tid].wake_tasks++;
William Lallemand1aab50b2018-06-07 09:46:01 +02002523 else if (signal_queue_len && tid == 0)
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002524 activity[tid].wake_signal++;
Olivier Houchard79321b92018-07-26 17:55:11 +02002525 else {
2526 HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
2527 __ha_barrier_store();
2528 if (active_tasks_mask & tid_bit) {
2529 activity[tid].wake_tasks++;
2530 HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
2531 } else
2532 exp = next;
2533 }
Willy Tarreau10146c92015-04-13 20:44:19 +02002534
Willy Tarreau58b458d2008-06-29 22:40:23 +02002535 /* The poller will ensure it returns around <next> */
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002536 cur_poller.poll(&cur_poller, exp);
Olivier Houchard79321b92018-07-26 17:55:11 +02002537 if (sleeping_thread_mask & tid_bit)
2538 HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
Willy Tarreau033cd9d2014-01-25 19:24:15 +01002539 fd_process_cached_events();
Emeric Brun64cc49c2017-10-03 14:46:45 +02002540
Willy Tarreaud80cb4e2018-01-20 19:30:13 +01002541 activity[tid].loops++;
Willy Tarreau4f60f162007-04-08 16:39:58 +02002542 }
2543}
2544
Christopher Faulet1d17c102017-08-29 15:38:48 +02002545static void *run_thread_poll_loop(void *data)
2546{
2547 struct per_thread_init_fct *ptif;
2548 struct per_thread_deinit_fct *ptdf;
Christopher Fauletda18b9d2018-01-25 16:10:16 +01002549 __decl_hathreads(static HA_SPINLOCK_T start_lock);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002550
Willy Tarreau0c026f42018-08-01 19:12:20 +02002551 ha_set_tid(*((unsigned int *)data));
Christopher Faulet1d17c102017-08-29 15:38:48 +02002552 tv_update_date(-1,-1);
2553
2554 list_for_each_entry(ptif, &per_thread_init_list, list) {
2555 if (!ptif->fct()) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002556 ha_alert("failed to initialize thread %u.\n", tid);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002557 exit(1);
2558 }
2559 }
2560
William Lallemandbc193052018-09-11 10:06:26 +02002561 if ((global.mode & MODE_MWORKER) && master == 0) {
Willy Tarreau1605c7a2018-01-23 19:01:49 +01002562 HA_SPIN_LOCK(START_LOCK, &start_lock);
2563 mworker_pipe_register();
2564 HA_SPIN_UNLOCK(START_LOCK, &start_lock);
2565 }
Christopher Fauletd4604ad2017-05-29 10:40:41 +02002566
2567 protocol_enable_all();
Christopher Faulet1d17c102017-08-29 15:38:48 +02002568 run_poll_loop();
2569
2570 list_for_each_entry(ptdf, &per_thread_deinit_list, list)
2571 ptdf->fct();
2572
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002573#ifdef USE_THREAD
William Lallemand091d8272018-06-24 09:37:03 +02002574 HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002575 if (tid > 0)
2576 pthread_exit(NULL);
Christopher Faulet1d17c102017-08-29 15:38:48 +02002577#endif
Christopher Fauletcd7879a2017-10-27 13:53:47 +02002578 return NULL;
2579}
Christopher Faulet1d17c102017-08-29 15:38:48 +02002580
Willy Tarreaue9b26022011-08-01 20:57:55 +02002581/* This is the global management task for listeners. It enables listeners waiting
2582 * for global resources when there are enough free resource, or at least once in
2583 * a while. It is designed to be called as a task.
2584 */
Olivier Houchard9f6af332018-05-25 14:04:04 +02002585static struct task *manage_global_listener_queue(struct task *t, void *context, unsigned short state)
Willy Tarreaue9b26022011-08-01 20:57:55 +02002586{
2587 int next = TICK_ETERNITY;
Willy Tarreaue9b26022011-08-01 20:57:55 +02002588 /* queue is empty, nothing to do */
2589 if (LIST_ISEMPTY(&global_listener_queue))
2590 goto out;
2591
2592 /* If there are still too many concurrent connections, let's wait for
2593 * some of them to go away. We don't need to re-arm the timer because
2594 * each of them will scan the queue anyway.
2595 */
2596 if (unlikely(actconn >= global.maxconn))
2597 goto out;
2598
2599 /* We should periodically try to enable listeners waiting for a global
2600 * resource here, because it is possible, though very unlikely, that
2601 * they have been blocked by a temporary lack of global resource such
2602 * as a file descriptor or memory and that the temporary condition has
2603 * disappeared.
2604 */
Willy Tarreauabacc2c2011-09-07 14:26:33 +02002605 dequeue_all_listeners(&global_listener_queue);
Willy Tarreaue9b26022011-08-01 20:57:55 +02002606
2607 out:
2608 t->expire = next;
2609 task_queue(t);
2610 return t;
2611}
Willy Tarreau4f60f162007-04-08 16:39:58 +02002612
Willy Tarreaubaaee002006-06-26 02:48:02 +02002613int main(int argc, char **argv)
2614{
2615 int err, retry;
2616 struct rlimit limit;
Emeric Bruncf20bf12010-10-22 16:06:11 +02002617 char errmsg[100];
Willy Tarreau269ab312012-09-05 08:02:48 +02002618 int pidfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002619
Olivier Houchard5fa300d2018-02-03 15:15:21 +01002620 setvbuf(stdout, NULL, _IONBF, 0);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002621 init(argc, argv);
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002622 signal_register_fct(SIGQUIT, dump, SIGQUIT);
2623 signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
2624 signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
William Lallemand73b85e72017-06-01 17:38:51 +02002625 signal_register_fct(SIGUSR2, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002626
Willy Tarreaue437c442010-03-17 18:02:46 +01002627 /* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
2628 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
2629 * was defined there, so let's stay on the safe side.
Willy Tarreaubaaee002006-06-26 02:48:02 +02002630 */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002631 signal_register_fct(SIGPIPE, NULL, 0);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002632
Willy Tarreaudc23a922011-02-16 11:10:36 +01002633 /* ulimits */
2634 if (!global.rlimit_nofile)
2635 global.rlimit_nofile = global.maxsock;
2636
2637 if (global.rlimit_nofile) {
2638 limit.rlim_cur = limit.rlim_max = global.rlimit_nofile;
2639 if (setrlimit(RLIMIT_NOFILE, &limit) == -1) {
Willy Tarreauef635472016-06-21 11:48:18 +02002640 /* try to set it to the max possible at least */
2641 getrlimit(RLIMIT_NOFILE, &limit);
Willy Tarreau164dd0b2016-06-21 11:51:59 +02002642 limit.rlim_cur = limit.rlim_max;
2643 if (setrlimit(RLIMIT_NOFILE, &limit) != -1)
2644 getrlimit(RLIMIT_NOFILE, &limit);
2645
Christopher Faulet767a84b2017-11-24 16:50:31 +01002646 ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n", argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
Willy Tarreauef635472016-06-21 11:48:18 +02002647 global.rlimit_nofile = limit.rlim_cur;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002648 }
2649 }
2650
2651 if (global.rlimit_memmax) {
2652 limit.rlim_cur = limit.rlim_max =
Willy Tarreau70060452015-12-14 12:46:07 +01002653 global.rlimit_memmax * 1048576ULL;
Willy Tarreaudc23a922011-02-16 11:10:36 +01002654#ifdef RLIMIT_AS
2655 if (setrlimit(RLIMIT_AS, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002656 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2657 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002658 }
2659#else
2660 if (setrlimit(RLIMIT_DATA, &limit) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002661 ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
2662 argv[0], global.rlimit_memmax);
Willy Tarreaudc23a922011-02-16 11:10:36 +01002663 }
2664#endif
2665 }
2666
Olivier Houchardf73629d2017-04-05 22:33:04 +02002667 if (old_unixsocket) {
William Lallemand85b0bd92017-06-01 17:38:53 +02002668 if (strcmp("/dev/null", old_unixsocket) != 0) {
2669 if (get_old_sockets(old_unixsocket) != 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002670 ha_alert("Failed to get the sockets from the old process!\n");
William Lallemand85b0bd92017-06-01 17:38:53 +02002671 if (!(global.mode & MODE_MWORKER))
2672 exit(1);
2673 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002674 }
2675 }
William Lallemand85b0bd92017-06-01 17:38:53 +02002676 get_cur_unixsocket();
2677
Willy Tarreaubaaee002006-06-26 02:48:02 +02002678 /* We will loop at most 100 times with 10 ms delay each time.
2679 * That's at most 1 second. We only send a signal to old pids
2680 * if we cannot grab at least one port.
2681 */
2682 retry = MAX_START_RETRIES;
2683 err = ERR_NONE;
2684 while (retry >= 0) {
2685 struct timeval w;
2686 err = start_proxies(retry == 0 || nb_oldpids == 0);
Willy Tarreaue13e9252007-12-20 23:05:50 +01002687 /* exit the loop on no error or fatal error */
2688 if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002689 break;
Willy Tarreaubb545b42010-08-25 12:58:59 +02002690 if (nb_oldpids == 0 || retry == 0)
Willy Tarreaubaaee002006-06-26 02:48:02 +02002691 break;
2692
2693 /* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
2694 * listening sockets. So on those platforms, it would be wiser to
2695 * simply send SIGUSR1, which will not be undoable.
2696 */
Willy Tarreaubb545b42010-08-25 12:58:59 +02002697 if (tell_old_pids(SIGTTOU) == 0) {
2698 /* no need to wait if we can't contact old pids */
2699 retry = 0;
2700 continue;
2701 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002702 /* give some time to old processes to stop listening */
2703 w.tv_sec = 0;
2704 w.tv_usec = 10*1000;
2705 select(0, NULL, NULL, NULL, &w);
2706 retry--;
2707 }
2708
2709 /* Note: start_proxies() sends an alert when it fails. */
Willy Tarreau0a3b9d92009-02-04 17:05:23 +01002710 if ((err & ~ERR_WARN) != ERR_NONE) {
Willy Tarreauf68da462009-06-09 14:36:00 +02002711 if (retry != MAX_START_RETRIES && nb_oldpids) {
2712 protocol_unbind_all(); /* cleanup everything we can */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002713 tell_old_pids(SIGTTIN);
Willy Tarreauf68da462009-06-09 14:36:00 +02002714 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002715 exit(1);
2716 }
2717
2718 if (listeners == 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002719 ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002720 /* Note: we don't have to send anything to the old pids because we
2721 * never stopped them. */
2722 exit(1);
2723 }
2724
Emeric Bruncf20bf12010-10-22 16:06:11 +02002725 err = protocol_bind_all(errmsg, sizeof(errmsg));
2726 if ((err & ~ERR_WARN) != ERR_NONE) {
2727 if ((err & ERR_ALERT) || (err & ERR_WARN))
Christopher Faulet767a84b2017-11-24 16:50:31 +01002728 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002729
Christopher Faulet767a84b2017-11-24 16:50:31 +01002730 ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002731 protocol_unbind_all(); /* cleanup everything we can */
2732 if (nb_oldpids)
2733 tell_old_pids(SIGTTIN);
2734 exit(1);
Emeric Bruncf20bf12010-10-22 16:06:11 +02002735 } else if (err & ERR_WARN) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002736 ha_alert("[%s.main()] %s.\n", argv[0], errmsg);
Willy Tarreaudd815982007-10-16 12:25:14 +02002737 }
Olivier Houchardf73629d2017-04-05 22:33:04 +02002738 /* Ok, all listener should now be bound, close any leftover sockets
2739 * the previous process gave us, we don't need them anymore
2740 */
2741 while (xfer_sock_list != NULL) {
2742 struct xfer_sock_list *tmpxfer = xfer_sock_list->next;
2743 close(xfer_sock_list->fd);
2744 free(xfer_sock_list->iface);
2745 free(xfer_sock_list->namespace);
2746 free(xfer_sock_list);
2747 xfer_sock_list = tmpxfer;
2748 }
Willy Tarreaudd815982007-10-16 12:25:14 +02002749
Willy Tarreaubaaee002006-06-26 02:48:02 +02002750 /* prepare pause/play signals */
Willy Tarreau24f4efa2010-08-27 17:56:48 +02002751 signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
2752 signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002753
Willy Tarreaubaaee002006-06-26 02:48:02 +02002754 /* MODE_QUIET can inhibit alerts and warnings below this line */
2755
PiBa-NL149a81a2017-12-25 21:03:31 +01002756 if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
2757 /* either stdin/out/err are already closed or should stay as they are. */
2758 if ((global.mode & MODE_DAEMON)) {
2759 /* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
2760 global.mode &= ~MODE_VERBOSE;
2761 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
2762 }
2763 } else {
2764 if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
2765 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01002766 stdio_quiet(-1);
PiBa-NL149a81a2017-12-25 21:03:31 +01002767 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002768 }
2769
2770 /* open log & pid files before the chroot */
William Lallemand80293002017-11-06 11:00:03 +01002771 if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) && global.pidfile != NULL) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02002772 unlink(global.pidfile);
2773 pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
2774 if (pidfd < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002775 ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002776 if (nb_oldpids)
2777 tell_old_pids(SIGTTIN);
Willy Tarreaudd815982007-10-16 12:25:14 +02002778 protocol_unbind_all();
Willy Tarreaubaaee002006-06-26 02:48:02 +02002779 exit(1);
2780 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002781 }
2782
Willy Tarreaub38651a2007-03-24 17:24:39 +01002783 if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002784 ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
2785 "", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002786 protocol_unbind_all();
Willy Tarreaub38651a2007-03-24 17:24:39 +01002787 exit(1);
2788 }
2789
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002790 /* If the user is not root, we'll still let him try the configuration
2791 * but we inform him that unexpected behaviour may occur.
2792 */
2793 if ((global.last_checks & LSTCHK_NETADM) && getuid())
Christopher Faulet767a84b2017-11-24 16:50:31 +01002794 ha_warning("[%s.main()] Some options which require full privileges"
2795 " might not work well.\n"
2796 "", argv[0]);
Willy Tarreau4e30ed72009-02-04 18:02:48 +01002797
William Lallemand095ba4c2017-06-01 17:38:50 +02002798 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2799
2800 /* chroot if needed */
2801 if (global.chroot != NULL) {
2802 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002803 ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02002804 if (nb_oldpids)
2805 tell_old_pids(SIGTTIN);
2806 protocol_unbind_all();
2807 exit(1);
2808 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002809 }
Willy Tarreauf223cc02007-10-15 18:57:08 +02002810 }
2811
Willy Tarreaubaaee002006-06-26 02:48:02 +02002812 if (nb_oldpids)
Willy Tarreaubb545b42010-08-25 12:58:59 +02002813 nb_oldpids = tell_old_pids(oldpids_sig);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002814
William Lallemand8a361b52017-06-20 11:20:33 +02002815 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)) {
2816 nb_oldpids = 0;
2817 free(oldpids);
2818 oldpids = NULL;
2819 }
2820
2821
Willy Tarreaubaaee002006-06-26 02:48:02 +02002822 /* Note that any error at this stage will be fatal because we will not
2823 * be able to restart the old pids.
2824 */
2825
William Lallemand095ba4c2017-06-01 17:38:50 +02002826 if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
2827 /* setgid / setuid */
2828 if (global.gid) {
2829 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01002830 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
2831 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002832
2833 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002834 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02002835 protocol_unbind_all();
2836 exit(1);
2837 }
2838 }
Michael Schererab012dd2013-01-12 18:35:19 +01002839
William Lallemand095ba4c2017-06-01 17:38:50 +02002840 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002841 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
Michael Schererab012dd2013-01-12 18:35:19 +01002842 protocol_unbind_all();
2843 exit(1);
2844 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002845 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002846 /* check ulimits */
2847 limit.rlim_cur = limit.rlim_max = 0;
2848 getrlimit(RLIMIT_NOFILE, &limit);
2849 if (limit.rlim_cur < global.maxsock) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002850 ha_warning("[%s.main()] FD limit (%d) too low for maxconn=%d/maxsock=%d. Please raise 'ulimit-n' to %d or more to avoid any trouble.\n",
2851 argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock, global.maxsock);
Willy Tarreaubaaee002006-06-26 02:48:02 +02002852 }
2853
William Lallemand095ba4c2017-06-01 17:38:50 +02002854 if (global.mode & (MODE_DAEMON | MODE_MWORKER)) {
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01002855 struct proxy *px;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02002856 struct peers *curpeers;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002857 int ret = 0;
2858 int proc;
William Lallemande1340412017-12-28 16:09:36 +01002859 int devnullfd = -1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002860
William Lallemand73b85e72017-06-01 17:38:51 +02002861 children = calloc(global.nbproc, sizeof(int));
William Lallemand095ba4c2017-06-01 17:38:50 +02002862 /*
2863 * if daemon + mworker: must fork here to let a master
2864 * process live in background before forking children
2865 */
William Lallemand73b85e72017-06-01 17:38:51 +02002866
2867 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
2868 && (global.mode & MODE_MWORKER)
2869 && (global.mode & MODE_DAEMON)) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002870 ret = fork();
2871 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002872 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02002873 protocol_unbind_all();
2874 exit(1); /* there has been an error */
William Lallemandbfd8eb52018-07-04 15:31:23 +02002875 } else if (ret > 0) { /* parent leave to daemonize */
William Lallemand095ba4c2017-06-01 17:38:50 +02002876 exit(0);
William Lallemandbfd8eb52018-07-04 15:31:23 +02002877 } else /* change the process group ID in the child (master process) */
2878 setsid();
William Lallemand095ba4c2017-06-01 17:38:50 +02002879 }
William Lallemande20b6a62017-06-01 17:38:55 +02002880
William Lallemande20b6a62017-06-01 17:38:55 +02002881
William Lallemanddeed7802017-11-06 11:00:04 +01002882 /* if in master-worker mode, write the PID of the father */
2883 if (global.mode & MODE_MWORKER) {
2884 char pidstr[100];
2885 snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
Willy Tarreau46ec48b2018-01-23 19:20:19 +01002886 if (pidfd >= 0)
2887 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
William Lallemanddeed7802017-11-06 11:00:04 +01002888 }
2889
Willy Tarreaubaaee002006-06-26 02:48:02 +02002890 /* the father launches the required number of processes */
2891 for (proc = 0; proc < global.nbproc; proc++) {
William Lallemandbc193052018-09-11 10:06:26 +02002892 if (global.mode & MODE_MWORKER) {
2893
2894 proc_self = malloc(sizeof(*proc_self));
2895 if (!proc_self) {
2896 ha_alert("[%s.main()] Cannot allocate process structures.\n", argv[0]);
2897 exit(1);
2898 }
2899
2900 /* master pipe to ensure the master is still alive */
2901 ret = socketpair(AF_UNIX, SOCK_STREAM, 0, proc_self->ipc_fd);
2902 if (ret < 0) {
2903 ha_alert("[%s.main()] Cannot create master pipe.\n", argv[0]);
2904 exit(EXIT_FAILURE);
2905 } else {
2906 proc_self->relative_pid = relative_pid;
2907 LIST_ADDQ(&proc_list, &proc_self->list);
2908 }
2909 }
Willy Tarreaubaaee002006-06-26 02:48:02 +02002910 ret = fork();
2911 if (ret < 0) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01002912 ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
Willy Tarreaudd815982007-10-16 12:25:14 +02002913 protocol_unbind_all();
Willy Tarreaud6803712007-10-16 07:44:56 +02002914 exit(1); /* there has been an error */
Willy Tarreaubaaee002006-06-26 02:48:02 +02002915 }
2916 else if (ret == 0) /* child breaks here */
2917 break;
Marc-Antoine Perennou992709b2013-02-12 10:53:52 +01002918 children[proc] = ret;
William Lallemand92159b22017-11-06 11:16:12 +01002919 if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
Willy Tarreau269ab312012-09-05 08:02:48 +02002920 char pidstr[100];
2921 snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
Willy Tarreau89efaed2013-12-13 15:14:55 +01002922 shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
Willy Tarreaubaaee002006-06-26 02:48:02 +02002923 }
William Lallemandbc193052018-09-11 10:06:26 +02002924 if (global.mode & MODE_MWORKER) {
2925 proc_self->pid = ret;
2926 close(proc_self->ipc_fd[1]); /* close client side */
2927 proc_self->ipc_fd[1] = -1;
2928 }
2929
Willy Tarreaudcd47712007-11-04 23:35:08 +01002930 relative_pid++; /* each child will get a different one */
Willy Tarreau387bd4f2017-11-10 19:08:14 +01002931 pid_bit <<= 1;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002932 }
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002933
2934#ifdef USE_CPU_AFFINITY
2935 if (proc < global.nbproc && /* child */
Willy Tarreaue7597492015-04-20 11:36:57 +02002936 proc < LONGBITS && /* only the first 32/64 processes may be pinned */
Christopher Fauletcb6a9452017-11-22 16:50:41 +01002937 global.cpu_map.proc[proc]) /* only do this if the process has a CPU map */
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002938#ifdef __FreeBSD__
Olivier Houchard97148f62017-08-16 17:29:11 +02002939 {
2940 cpuset_t cpuset;
2941 int i;
Christopher Fauletcb6a9452017-11-22 16:50:41 +01002942 unsigned long cpu_map = global.cpu_map.proc[proc];
Olivier Houchard97148f62017-08-16 17:29:11 +02002943
2944 CPU_ZERO(&cpuset);
2945 while ((i = ffsl(cpu_map)) > 0) {
2946 CPU_SET(i - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01002947 cpu_map &= ~(1UL << (i - 1));
Olivier Houchard97148f62017-08-16 17:29:11 +02002948 }
2949 ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset), &cpuset);
2950 }
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002951#else
Christopher Fauletcb6a9452017-11-22 16:50:41 +01002952 sched_setaffinity(0, sizeof(unsigned long), (void *)&global.cpu_map.proc[proc]);
Willy Tarreaufc6c0322012-11-16 16:12:27 +01002953#endif
Pieter Baauwcaa6a1b2015-09-17 21:26:40 +02002954#endif
Willy Tarreaubaaee002006-06-26 02:48:02 +02002955 /* close the pidfile both in children and father */
Willy Tarreau269ab312012-09-05 08:02:48 +02002956 if (pidfd >= 0) {
2957 //lseek(pidfd, 0, SEEK_SET); /* debug: emulate eglibc bug */
2958 close(pidfd);
2959 }
Willy Tarreaud137dd32010-08-25 12:49:05 +02002960
2961 /* We won't ever use this anymore */
Willy Tarreaud137dd32010-08-25 12:49:05 +02002962 free(global.pidfile); global.pidfile = NULL;
Willy Tarreaubaaee002006-06-26 02:48:02 +02002963
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002964 if (proc == global.nbproc) {
William Lallemand095ba4c2017-06-01 17:38:50 +02002965 if (global.mode & MODE_MWORKER) {
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002966
2967 if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
2968 (global.mode & MODE_DAEMON)) {
2969 /* detach from the tty, this is required to properly daemonize. */
William Lallemande1340412017-12-28 16:09:36 +01002970 if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
2971 stdio_quiet(-1);
2972
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002973 global.mode &= ~MODE_VERBOSE;
2974 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
PiBa-NLbaf6ea42017-11-28 23:26:08 +01002975 }
2976
William Lallemandb3f2be32018-09-11 10:06:18 +02002977 mworker_loop();
William Lallemand1499b9b2017-06-07 15:04:47 +02002978 /* should never get there */
2979 exit(EXIT_FAILURE);
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002980 }
William Lallemandcf4e4962017-06-08 19:05:48 +02002981#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
Grant Zhang872f9c22017-01-21 01:10:18 +00002982 ssl_free_dh();
2983#endif
William Lallemand1499b9b2017-06-07 15:04:47 +02002984 exit(0); /* parent must leave */
Willy Tarreauedaff0a2015-05-01 17:01:08 +02002985 }
2986
William Lallemandcb11fd22017-06-01 17:38:52 +02002987 /* child must never use the atexit function */
2988 atexit_flag = 0;
2989
William Lallemandbc193052018-09-11 10:06:26 +02002990 /* close useless master sockets */
2991 if (global.mode & MODE_MWORKER) {
2992 struct mworker_proc *child, *it;
2993 master = 0;
2994
2995 /* free proc struct of other processes */
2996 list_for_each_entry_safe(child, it, &proc_list, list) {
2997 if (child->ipc_fd[0] > -1) {
2998 close(child->ipc_fd[0]);
2999 child->ipc_fd[0] = -1;
3000 }
3001 if (child == proc_self)
3002 continue;
3003 close(child->ipc_fd[1]);
3004 LIST_DEL(&child->list);
3005 free(child);
3006 }
3007 }
Willy Tarreau1605c7a2018-01-23 19:01:49 +01003008
William Lallemande1340412017-12-28 16:09:36 +01003009 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
3010 devnullfd = open("/dev/null", O_RDWR, 0);
3011 if (devnullfd < 0) {
3012 ha_alert("Cannot open /dev/null\n");
3013 exit(EXIT_FAILURE);
3014 }
3015 }
3016
William Lallemand095ba4c2017-06-01 17:38:50 +02003017 /* Must chroot and setgid/setuid in the children */
3018 /* chroot if needed */
3019 if (global.chroot != NULL) {
3020 if (chroot(global.chroot) == -1 || chdir("/") == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003021 ha_alert("[%s.main()] Cannot chroot1(%s).\n", argv[0], global.chroot);
William Lallemand095ba4c2017-06-01 17:38:50 +02003022 if (nb_oldpids)
3023 tell_old_pids(SIGTTIN);
3024 protocol_unbind_all();
3025 exit(1);
3026 }
3027 }
3028
3029 free(global.chroot);
3030 global.chroot = NULL;
3031
3032 /* setgid / setuid */
3033 if (global.gid) {
3034 if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
Christopher Faulet767a84b2017-11-24 16:50:31 +01003035 ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
3036 " without 'uid'/'user' is generally useless.\n", argv[0]);
William Lallemand095ba4c2017-06-01 17:38:50 +02003037
3038 if (setgid(global.gid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003039 ha_alert("[%s.main()] Cannot set gid %d.\n", argv[0], global.gid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003040 protocol_unbind_all();
3041 exit(1);
3042 }
3043 }
3044
3045 if (global.uid && setuid(global.uid) == -1) {
Christopher Faulet767a84b2017-11-24 16:50:31 +01003046 ha_alert("[%s.main()] Cannot set uid %d.\n", argv[0], global.uid);
William Lallemand095ba4c2017-06-01 17:38:50 +02003047 protocol_unbind_all();
3048 exit(1);
3049 }
3050
William Lallemand7f80eb22017-05-26 18:19:55 +02003051 /* pass through every cli socket, and check if it's bound to
3052 * the current process and if it exposes listeners sockets.
3053 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
3054 * */
3055
3056 if (global.stats_fe) {
3057 struct bind_conf *bind_conf;
3058
3059 list_for_each_entry(bind_conf, &global.stats_fe->conf.bind, by_fe) {
3060 if (bind_conf->level & ACCESS_FD_LISTENERS) {
3061 if (!bind_conf->bind_proc || bind_conf->bind_proc & (1UL << proc)) {
3062 global.tune.options |= GTUNE_SOCKET_TRANSFER;
3063 break;
3064 }
3065 }
3066 }
3067 }
3068
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003069 /* we might have to unbind some proxies from some processes */
Olivier Houchardfbc74e82017-11-24 16:54:05 +01003070 px = proxies_list;
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003071 while (px != NULL) {
3072 if (px->bind_proc && px->state != PR_STSTOPPED) {
Olivier Houchard1fc05162017-04-06 01:05:05 +02003073 if (!(px->bind_proc & (1UL << proc))) {
3074 if (global.tune.options & GTUNE_SOCKET_TRANSFER)
3075 zombify_proxy(px);
3076 else
3077 stop_proxy(px);
3078 }
Willy Tarreau0b9c02c2009-02-04 22:05:05 +01003079 }
3080 px = px->next;
3081 }
3082
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003083 /* we might have to unbind some peers sections from some processes */
Frédéric Lécailleed2b4a62017-07-13 09:07:09 +02003084 for (curpeers = cfg_peers; curpeers; curpeers = curpeers->next) {
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003085 if (!curpeers->peers_fe)
3086 continue;
3087
3088 if (curpeers->peers_fe->bind_proc & (1UL << proc))
3089 continue;
3090
3091 stop_proxy(curpeers->peers_fe);
3092 /* disable this peer section so that it kills itself */
Willy Tarreau47c8c022015-09-28 16:39:25 +02003093 signal_unregister_handler(curpeers->sighandler);
3094 task_delete(curpeers->sync_task);
3095 task_free(curpeers->sync_task);
3096 curpeers->sync_task = NULL;
3097 task_free(curpeers->peers_fe->task);
3098 curpeers->peers_fe->task = NULL;
Willy Tarreauf83d3fe2015-05-01 19:13:41 +02003099 curpeers->peers_fe = NULL;
3100 }
3101
Willy Tarreaubaaee002006-06-26 02:48:02 +02003102 /* if we're NOT in QUIET mode, we should now close the 3 first FDs to ensure
3103 * that we can detach from the TTY. We MUST NOT do it in other cases since
3104 * it would have already be done, and 0-2 would have been affected to listening
3105 * sockets
3106 */
Willy Tarreau106cb762008-11-16 07:40:34 +01003107 if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +02003108 /* detach from the tty */
William Lallemande1340412017-12-28 16:09:36 +01003109 stdio_quiet(devnullfd);
Willy Tarreau106cb762008-11-16 07:40:34 +01003110 global.mode &= ~MODE_VERBOSE;
Willy Tarreaubaaee002006-06-26 02:48:02 +02003111 global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
3112 }
3113 pid = getpid(); /* update child's pid */
William Lallemandbfd8eb52018-07-04 15:31:23 +02003114 if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
3115 setsid();
Willy Tarreau2ff76222007-04-09 19:29:56 +02003116 fork_poller();
Willy Tarreaubaaee002006-06-26 02:48:02 +02003117 }
3118
Christopher Faulete3a5e352017-10-24 13:53:54 +02003119 global.mode &= ~MODE_STARTING;
Willy Tarreau4f60f162007-04-08 16:39:58 +02003120 /*
3121 * That's it : the central polling loop. Run until we stop.
3122 */
Christopher Faulet1d17c102017-08-29 15:38:48 +02003123#ifdef USE_THREAD
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003124 {
Christopher Faulet1d17c102017-08-29 15:38:48 +02003125 unsigned int *tids = calloc(global.nbthread, sizeof(unsigned int));
3126 pthread_t *threads = calloc(global.nbthread, sizeof(pthread_t));
3127 int i;
William Lallemand1aab50b2018-06-07 09:46:01 +02003128 sigset_t blocked_sig, old_sig;
Christopher Faulet1d17c102017-08-29 15:38:48 +02003129
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003130 /* Init tids array */
3131 for (i = 0; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003132 tids[i] = i;
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003133
William Lallemand1aab50b2018-06-07 09:46:01 +02003134 /* ensure the signals will be blocked in every thread */
3135 sigfillset(&blocked_sig);
3136 sigdelset(&blocked_sig, SIGPROF);
3137 sigdelset(&blocked_sig, SIGBUS);
3138 sigdelset(&blocked_sig, SIGFPE);
3139 sigdelset(&blocked_sig, SIGILL);
3140 sigdelset(&blocked_sig, SIGSEGV);
3141 pthread_sigmask(SIG_SETMASK, &blocked_sig, &old_sig);
3142
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003143 /* Create nbthread-1 thread. The first thread is the current process */
3144 threads[0] = pthread_self();
3145 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003146 pthread_create(&threads[i], NULL, &run_thread_poll_loop, &tids[i]);
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003147
Christopher Faulet62519022017-10-16 15:49:32 +02003148#ifdef USE_CPU_AFFINITY
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003149 /* Now the CPU affinity for all threads */
3150 for (i = 0; i < global.nbthread; i++) {
Christopher Fauletcb6a9452017-11-22 16:50:41 +01003151 if (global.cpu_map.proc[relative_pid-1])
3152 global.cpu_map.thread[relative_pid-1][i] &= global.cpu_map.proc[relative_pid-1];
Christopher Faulet62519022017-10-16 15:49:32 +02003153
Willy Tarreau421f02e2018-01-20 18:19:22 +01003154 if (i < MAX_THREADS && /* only the first 32/64 threads may be pinned */
Olivier Houchard829aa242017-12-01 18:19:43 +01003155 global.cpu_map.thread[relative_pid-1][i]) {/* only do this if the thread has a THREAD map */
3156#if defined(__FreeBSD__) || defined(__NetBSD__)
3157 cpuset_t cpuset;
3158#else
3159 cpu_set_t cpuset;
3160#endif
3161 int j;
3162 unsigned long cpu_map = global.cpu_map.thread[relative_pid-1][i];
3163
3164 CPU_ZERO(&cpuset);
3165
3166 while ((j = ffsl(cpu_map)) > 0) {
3167 CPU_SET(j - 1, &cpuset);
Cyril Bontéd400ab32018-03-12 21:47:39 +01003168 cpu_map &= ~(1UL << (j - 1));
Olivier Houchard829aa242017-12-01 18:19:43 +01003169 }
Christopher Faulet62519022017-10-16 15:49:32 +02003170 pthread_setaffinity_np(threads[i],
Olivier Houchard829aa242017-12-01 18:19:43 +01003171 sizeof(cpuset), &cpuset);
3172 }
Christopher Faulet1d17c102017-08-29 15:38:48 +02003173 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003174#endif /* !USE_CPU_AFFINITY */
3175
William Lallemand1aab50b2018-06-07 09:46:01 +02003176 /* when multithreading we need to let only the thread 0 handle the signals */
William Lallemandd3801c12018-09-11 10:06:23 +02003177 haproxy_unblock_signals();
William Lallemand1aab50b2018-06-07 09:46:01 +02003178
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003179 /* Finally, start the poll loop for the first thread */
3180 run_thread_poll_loop(&tids[0]);
3181
3182 /* Wait the end of other threads */
3183 for (i = 1; i < global.nbthread; i++)
Christopher Faulet1d17c102017-08-29 15:38:48 +02003184 pthread_join(threads[i], NULL);
Willy Tarreaubaaee002006-06-26 02:48:02 +02003185
Christopher Faulet1d17c102017-08-29 15:38:48 +02003186 free(tids);
3187 free(threads);
3188
Christopher Fauletb79a94c2017-05-30 15:34:30 +02003189#if defined(DEBUG_THREAD) || defined(DEBUG_FULL)
3190 show_lock_stats();
3191#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003192 }
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003193#else /* ! USE_THREAD */
William Lallemandd3801c12018-09-11 10:06:23 +02003194 haproxy_unblock_signals();
Christopher Fauletcd7879a2017-10-27 13:53:47 +02003195 run_thread_poll_loop((int []){0});
Christopher Faulet62519022017-10-16 15:49:32 +02003196
Christopher Faulet62519022017-10-16 15:49:32 +02003197#endif
Christopher Faulet1d17c102017-08-29 15:38:48 +02003198
3199 /* Do some cleanup */
Willy Tarreaubaaee002006-06-26 02:48:02 +02003200 deinit();
Christopher Faulet1d17c102017-08-29 15:38:48 +02003201
Willy Tarreaubaaee002006-06-26 02:48:02 +02003202 exit(0);
3203}
3204
3205
3206/*
3207 * Local variables:
3208 * c-indent-level: 8
3209 * c-basic-offset: 8
3210 * End:
3211 */