Adding upstream version 2.6.12.upstream/2.6.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3674 insertions, 0 deletions

diff --git a/src/haproxy.c b/src/haproxy.c
new file mode 100644
index 0000000..7f59af6
--- /dev/null
+++ b/src/haproxy.c
@@ -0,0 +1,3674 @@
+/*
+ * HAProxy : High Availability-enabled HTTP/TCP proxy
+ * Copyright 2000-2023 Willy Tarreau <willy@haproxy.org>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Please refer to RFC7230 - RFC7235 information about HTTP protocol, and
+ * RFC6265 for information about cookies usage. More generally, the IETF HTTP
+ * Working Group's web site should be consulted for protocol related changes :
+ *
+ *     http://ftp.ics.uci.edu/pub/ietf/http/
+ *
+ * Pending bugs (may be not fixed because never reproduced) :
+ *   - solaris only : sometimes, an HTTP proxy with only a dispatch address causes
+ *     the proxy to terminate (no core) if the client breaks the connection during
+ *     the response. Seen on 1.1.8pre4, but never reproduced. May not be related to
+ *     the snprintf() bug since requests were simple (GET / HTTP/1.0), but may be
+ *     related to missing setsid() (fixed in 1.1.15)
+ *   - a proxy with an invalid config will prevent the startup even if disabled.
+ *
+ * ChangeLog has moved to the CHANGELOG file.
+ *
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/tcp.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <sys/resource.h>
+#include <sys/utsname.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <syslog.h>
+#include <grp.h>
+
+#ifdef USE_THREAD
+#include <pthread.h>
+#endif
+
+#ifdef USE_CPU_AFFINITY
+#include <sched.h>
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+#include <sys/param.h>
+#ifdef __FreeBSD__
+#include <sys/cpuset.h>
+#endif
+#endif
+#endif
+
+#if defined(USE_PRCTL)
+#include <sys/prctl.h>
+#endif
+
+#if defined(USE_PROCCTL)
+#include <sys/procctl.h>
+#endif
+
+#ifdef DEBUG_FULL
+#include <assert.h>
+#endif
+#if defined(USE_SYSTEMD)
+#include <systemd/sd-daemon.h>
+#endif
+
+#include <import/sha1.h>
+
+#include <haproxy/acl.h>
+#include <haproxy/action.h>
+#include <haproxy/activity.h>
+#include <haproxy/api.h>
+#include <haproxy/arg.h>
+#include <haproxy/auth.h>
+#include <haproxy/base64.h>
+#include <haproxy/capture-t.h>
+#include <haproxy/cfgcond.h>
+#include <haproxy/cfgdiag.h>
+#include <haproxy/cfgparse.h>
+#include <haproxy/chunk.h>
+#include <haproxy/cli.h>
+#include <haproxy/clock.h>
+#include <haproxy/connection.h>
+#ifdef USE_CPU_AFFINITY
+#include <haproxy/cpuset.h>
+#endif
+#include <haproxy/dns.h>
+#include <haproxy/dynbuf.h>
+#include <haproxy/errors.h>
+#include <haproxy/fd.h>
+#include <haproxy/filters.h>
+#include <haproxy/global.h>
+#include <haproxy/hlua.h>
+#include <haproxy/http_rules.h>
+#include <haproxy/list.h>
+#include <haproxy/listener.h>
+#include <haproxy/log.h>
+#include <haproxy/mworker.h>
+#include <haproxy/namespace.h>
+#include <haproxy/net_helper.h>
+#include <haproxy/openssl-compat.h>
+#include <haproxy/quic_conn-t.h>
+#include <haproxy/quic_tp-t.h>
+#include <haproxy/pattern.h>
+#include <haproxy/peers.h>
+#include <haproxy/pool.h>
+#include <haproxy/protocol.h>
+#include <haproxy/proto_tcp.h>
+#include <haproxy/proxy.h>
+#include <haproxy/regex.h>
+#include <haproxy/sample.h>
+#include <haproxy/server.h>
+#include <haproxy/session.h>
+#include <haproxy/signal.h>
+#include <haproxy/sock.h>
+#include <haproxy/sock_inet.h>
+#include <haproxy/ssl_sock.h>
+#include <haproxy/stats-t.h>
+#include <haproxy/stream.h>
+#include <haproxy/task.h>
+#include <haproxy/thread.h>
+#include <haproxy/time.h>
+#include <haproxy/tools.h>
+#include <haproxy/uri_auth-t.h>
+#include <haproxy/vars.h>
+#include <haproxy/version.h>
+
+
+/* array of init calls for older platforms */
+DECLARE_INIT_STAGES;
+
+/* create a read_mostly section to hold variables which are accessed a lot
+ * but which almost never change. The purpose is to isolate them in their
+ * own cache lines where they don't risk to be perturbated by write accesses
+ * to neighbor variables. We need to create an empty aligned variable for
+ * this. The fact that the variable is of size zero means that it will be
+ * eliminated at link time if no other variable uses it, but alignment will
+ * be respected.
+ */
+empty_t __read_mostly_align HA_SECTION("read_mostly") ALIGNED(64);
+
+#ifdef BUILD_FEATURES
+const char *build_features = BUILD_FEATURES;
+#else
+const char *build_features = "";
+#endif
+
+/* list of config files */
+static struct list cfg_cfgfiles = LIST_HEAD_INIT(cfg_cfgfiles);
+int  pid;			/* current process id */
+
+volatile unsigned long sleeping_thread_mask = 0; /* Threads that are about to sleep in poll() */
+volatile unsigned long stopping_thread_mask = 0; /* Threads acknowledged stopping */
+
+/* global options */
+struct global global = {
+	.hard_stop_after = TICK_ETERNITY,
+	.close_spread_time = TICK_ETERNITY,
+	.close_spread_end = TICK_ETERNITY,
+	.numa_cpu_mapping = 1,
+	.nbthread = 0,
+	.req_count = 0,
+	.logsrvs = LIST_HEAD_INIT(global.logsrvs),
+	.maxzlibmem = DEFAULT_MAXZLIBMEM * 1024U * 1024U,
+	.comp_rate_lim = 0,
+	.ssl_server_verify = SSL_SERVER_VERIFY_REQUIRED,
+	.unix_bind = {
+		 .ux = {
+			 .uid = -1,
+			 .gid = -1,
+			 .mode = 0,
+		 }
+	},
+	.tune = {
+		.options = GTUNE_LISTENER_MQ,
+		.bufsize = (BUFSIZE + 2*sizeof(void *) - 1) & -(2*sizeof(void *)),
+		.maxrewrite = MAXREWRITE,
+		.reserved_bufs = RESERVED_BUFS,
+		.pattern_cache = DEFAULT_PAT_LRU_SIZE,
+		.pool_low_ratio  = 20,
+		.pool_high_ratio = 25,
+		.max_http_hdr = MAX_HTTP_HDR,
+#ifdef USE_OPENSSL
+		.sslcachesize = SSLCACHESIZE,
+#endif
+		.comp_maxlevel = 1,
+#ifdef DEFAULT_IDLE_TIMER
+		.idle_timer = DEFAULT_IDLE_TIMER,
+#else
+		.idle_timer = 1000, /* 1 second */
+#endif
+#ifdef USE_QUIC
+		.quic_backend_max_idle_timeout = QUIC_TP_DFLT_BACK_MAX_IDLE_TIMEOUT,
+		.quic_frontend_max_idle_timeout = QUIC_TP_DFLT_FRONT_MAX_IDLE_TIMEOUT,
+		.quic_frontend_max_streams_bidi = QUIC_TP_DFLT_FRONT_MAX_STREAMS_BIDI,
+		.quic_retry_threshold = QUIC_DFLT_RETRY_THRESHOLD,
+		.quic_streams_buf = 30,
+#endif /* USE_QUIC */
+	},
+#ifdef USE_OPENSSL
+#ifdef DEFAULT_MAXSSLCONN
+	.maxsslconn = DEFAULT_MAXSSLCONN,
+#endif
+#endif
+	/* others NULL OK */
+};
+
+/*********************************************************************/
+
+int stopping;	/* non zero means stopping in progress */
+int killed;	/* non zero means a hard-stop is triggered */
+int jobs = 0;   /* number of active jobs (conns, listeners, active tasks, ...) */
+int unstoppable_jobs = 0;  /* number of active jobs that can't be stopped during a soft stop */
+int active_peers = 0; /* number of active peers (connection attempts and connected) */
+int connected_peers = 0; /* number of connected peers (verified ones) */
+int arg_mode = 0;	/* MODE_DEBUG etc as passed on command line ... */
+char *change_dir = NULL; /* set when -C is passed */
+char *check_condition = NULL; /* check condition passed to -cc */
+
+/* Here we store information about the pids of the processes we may pause
+ * or kill. We will send them a signal every 10 ms until we can bind to all
+ * our ports. With 200 retries, that's about 2 seconds.
+ */
+#define MAX_START_RETRIES	200
+static int *oldpids = NULL;
+static int oldpids_sig; /* use USR1 or TERM */
+
+/* Path to the unix socket we use to retrieve listener sockets from the old process */
+static const char *old_unixsocket;
+
+int atexit_flag = 0;
+
+int nb_oldpids = 0;
+const int zero = 0;
+const int one = 1;
+const struct linger nolinger = { .l_onoff = 1, .l_linger = 0 };
+
+char hostname[MAX_HOSTNAME_LEN];
+char *localpeer = NULL;
+static char *kwd_dump = NULL; // list of keyword dumps to produce
+
+static char **old_argv = NULL; /* previous argv but cleaned up */
+
+struct list proc_list = LIST_HEAD_INIT(proc_list);
+
+int master = 0; /* 1 if in master, 0 if in child */
+unsigned int rlim_fd_cur_at_boot = 0;
+unsigned int rlim_fd_max_at_boot = 0;
+
+/* per-boot randomness */
+unsigned char boot_seed[20];        /* per-boot random seed (160 bits initially) */
+
+/* takes the thread config in argument or NULL for any thread */
+static void *run_thread_poll_loop(void *data);
+
+/* bitfield of a few warnings to emit just once (WARN_*) */
+unsigned int warned = 0;
+
+/* set if experimental features have been used for the current process */
+unsigned int tainted = 0;
+
+unsigned int experimental_directives_allowed = 0;
+
+int check_kw_experimental(struct cfg_keyword *kw, const char *file, int linenum,
+                          char **errmsg)
+{
+	if (kw->flags & KWF_EXPERIMENTAL) {
+		if (!experimental_directives_allowed) {
+			memprintf(errmsg, "parsing [%s:%d] : '%s' directive is experimental, must be allowed via a global 'expose-experimental-directives'",
+			          file, linenum, kw->kw);
+			return 1;
+		}
+		mark_tainted(TAINTED_CONFIG_EXP_KW_DECLARED);
+	}
+
+	return 0;
+}
+
+/* master CLI configuration (-S flag) */
+struct list mworker_cli_conf = LIST_HEAD_INIT(mworker_cli_conf);
+
+/* These are strings to be reported in the output of "haproxy -vv". They may
+ * either be constants (in which case must_free must be zero) or dynamically
+ * allocated strings to pass to free() on exit, and in this case must_free
+ * must be non-zero.
+ */
+struct list build_opts_list = LIST_HEAD_INIT(build_opts_list);
+struct build_opts_str {
+	struct list list;
+	const char *str;
+	int must_free;
+};
+
+/*********************************************************************/
+/*  general purpose functions  ***************************************/
+/*********************************************************************/
+
+/* used to register some build option strings at boot. Set must_free to
+ * non-zero if the string must be freed upon exit.
+ */
+void hap_register_build_opts(const char *str, int must_free)
+{
+	struct build_opts_str *b;
+
+	b = calloc(1, sizeof(*b));
+	if (!b) {
+		fprintf(stderr, "out of memory\n");
+		exit(1);
+	}
+	b->str = str;
+	b->must_free = must_free;
+	LIST_APPEND(&build_opts_list, &b->list);
+}
+
+#define VERSION_MAX_ELTS  7
+
+/* This function splits an haproxy version string into an array of integers.
+ * The syntax of the supported version string is the following:
+ *
+ *    <a>[.<b>[.<c>[.<d>]]][-{dev,pre,rc}<f>][-*][-<g>]
+ *
+ * This validates for example:
+ *   1.2.1-pre2, 1.2.1, 1.2.10.1, 1.3.16-rc1, 1.4-dev3, 1.5-dev18, 1.5-dev18-43
+ *   2.4-dev18-f6818d-20
+ *
+ * The result is set in a array of <VERSION_MAX_ELTS> elements. Each letter has
+ * one fixed place in the array. The tags take a numeric value called <e> which
+ * defaults to 3. "dev" is 1, "rc" and "pre" are 2. Numbers not encountered are
+ * considered as zero (henxe 1.5 and 1.5.0 are the same).
+ *
+ * The resulting values are:
+ *   1.2.1-pre2            1, 2,  1, 0, 2,  2,  0
+ *   1.2.1                 1, 2,  1, 0, 3,  0,  0
+ *   1.2.10.1              1, 2, 10, 1, 3,  0,  0
+ *   1.3.16-rc1            1, 3, 16, 0, 2,  1,  0
+ *   1.4-dev3              1, 4,  0, 0, 1,  3,  0
+ *   1.5-dev18             1, 5,  0, 0, 1, 18,  0
+ *   1.5-dev18-43          1, 5,  0, 0, 1, 18, 43
+ *   2.4-dev18-f6818d-20   2, 4,  0, 0, 1, 18, 20
+ *
+ * The function returns non-zero if the conversion succeeded, or zero if it
+ * failed.
+ */
+int split_version(const char *version, unsigned int *value)
+{
+	const char *p, *s;
+	char *error;
+	int nelts;
+
+	/* Initialize array with zeroes */
+	for (nelts = 0; nelts < VERSION_MAX_ELTS; nelts++)
+		value[nelts] = 0;
+	value[4] = 3;
+
+	p = version;
+
+	/* If the version number is empty, return false */
+	if (*p == '\0')
+		return 0;
+
+	/* Convert first number <a> */
+	value[0] = strtol(p, &error, 10);
+	p = error + 1;
+	if (*error == '\0')
+		return 1;
+	if (*error == '-')
+		goto split_version_tag;
+	if (*error != '.')
+		return 0;
+
+	/* Convert first number <b> */
+	value[1] = strtol(p, &error, 10);
+	p = error + 1;
+	if (*error == '\0')
+		return 1;
+	if (*error == '-')
+		goto split_version_tag;
+	if (*error != '.')
+		return 0;
+
+	/* Convert first number <c> */
+	value[2] = strtol(p, &error, 10);
+	p = error + 1;
+	if (*error == '\0')
+		return 1;
+	if (*error == '-')
+		goto split_version_tag;
+	if (*error != '.')
+		return 0;
+
+	/* Convert first number <d> */
+	value[3] = strtol(p, &error, 10);
+	p = error + 1;
+	if (*error == '\0')
+		return 1;
+	if (*error != '-')
+		return 0;
+
+ split_version_tag:
+	/* Check for commit number */
+	if (*p >= '0' && *p <= '9')
+		goto split_version_commit;
+
+	/* Read tag */
+	if (strncmp(p, "dev", 3) == 0)      { value[4] = 1; p += 3; }
+	else if (strncmp(p, "rc", 2) == 0)  { value[4] = 2; p += 2; }
+	else if (strncmp(p, "pre", 3) == 0) { value[4] = 2; p += 3; }
+	else
+		goto split_version_commit;
+
+	/* Convert tag number */
+	value[5] = strtol(p, &error, 10);
+	p = error + 1;
+	if (*error == '\0')
+		return 1;
+	if (*error != '-')
+		return 0;
+
+ split_version_commit:
+	/* Search the last "-" */
+	s = strrchr(p, '-');
+	if (s) {
+		s++;
+		if (*s == '\0')
+			return 0;
+		value[6] = strtol(s, &error, 10);
+		if (*error != '\0')
+			value[6] = 0;
+		return 1;
+	}
+
+	/* convert the version */
+	value[6] = strtol(p, &error, 10);
+	if (*error != '\0')
+		value[6] = 0;
+
+	return 1;
+}
+
+/* This function compares the current haproxy version with an arbitrary version
+ * string. It returns:
+ *  -1 : the version in argument is older than the current haproxy version
+ *   0 : the version in argument is the same as the current haproxy version
+ *   1 : the version in argument is newer than the current haproxy version
+ *
+ * Or some errors:
+ *  -2 : the current haproxy version is not parsable
+ *  -3 : the version in argument is not parsable
+ */
+int compare_current_version(const char *version)
+{
+	unsigned int loc[VERSION_MAX_ELTS];
+	unsigned int mod[VERSION_MAX_ELTS];
+	int i;
+
+	/* split versions */
+	if (!split_version(haproxy_version, loc))
+		return -2;
+	if (!split_version(version, mod))
+		return -3;
+
+	/* compare versions */
+	for (i = 0; i < VERSION_MAX_ELTS; i++) {
+		if (mod[i] < loc[i])
+			return -1;
+		else if (mod[i] > loc[i])
+			return 1;
+	}
+	return 0;
+}
+
+static void display_version()
+{
+	struct utsname utsname;
+
+	printf("HAProxy version %s %s - https://haproxy.org/\n"
+	       PRODUCT_STATUS "\n", haproxy_version, haproxy_date);
+
+	if (strlen(PRODUCT_URL_BUGS) > 0) {
+		char base_version[20];
+		int dots = 0;
+		char *del;
+
+		/* only retrieve the base version without distro-specific extensions */
+		for (del = haproxy_version; *del; del++) {
+			if (*del == '.')
+				dots++;
+			else if (*del < '0' || *del > '9')
+				break;
+		}
+
+		strlcpy2(base_version, haproxy_version, del - haproxy_version + 1);
+		if (dots < 2)
+			printf("Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open\n");
+		else
+			printf("Known bugs: " PRODUCT_URL_BUGS "\n", base_version);
+	}
+
+	if (uname(&utsname) == 0) {
+		printf("Running on: %s %s %s %s\n", utsname.sysname, utsname.release, utsname.version, utsname.machine);
+	}
+}
+
+static void display_build_opts()
+{
+	struct build_opts_str *item;
+
+	printf("Build options :"
+#ifdef BUILD_TARGET
+	       "\n  TARGET  = " BUILD_TARGET
+#endif
+#ifdef BUILD_CPU
+	       "\n  CPU     = " BUILD_CPU
+#endif
+#ifdef BUILD_CC
+	       "\n  CC      = " BUILD_CC
+#endif
+#ifdef BUILD_CFLAGS
+	       "\n  CFLAGS  = " BUILD_CFLAGS
+#endif
+#ifdef BUILD_OPTIONS
+	       "\n  OPTIONS = " BUILD_OPTIONS
+#endif
+#ifdef BUILD_DEBUG
+	       "\n  DEBUG   = " BUILD_DEBUG
+#endif
+#ifdef BUILD_FEATURES
+	       "\n\nFeature list : " BUILD_FEATURES
+#endif
+	       "\n\nDefault settings :"
+	       "\n  bufsize = %d, maxrewrite = %d, maxpollevents = %d"
+	       "\n\n",
+	       BUFSIZE, MAXREWRITE, MAX_POLL_EVENTS);
+
+	list_for_each_entry(item, &build_opts_list, list) {
+		puts(item->str);
+	}
+
+	putchar('\n');
+
+	list_pollers(stdout);
+	putchar('\n');
+	list_mux_proto(stdout);
+	putchar('\n');
+	list_services(stdout);
+	putchar('\n');
+	list_filters(stdout);
+	putchar('\n');
+}
+
+/*
+ * This function prints the command line usage and exits
+ */
+static void usage(char *name)
+{
+	display_version();
+	fprintf(stderr,
+		"Usage : %s [-f <cfgfile|cfgdir>]* [ -vdV"
+		"D ] [ -n <maxconn> ] [ -N <maxpconn> ]\n"
+		"        [ -p <pidfile> ] [ -m <max megs> ] [ -C <dir> ] [-- <cfgfile>*]\n"
+		"        -v displays version ; -vv shows known build options.\n"
+		"        -d enters debug mode ; -db only disables background mode.\n"
+		"        -dM[<byte>,help,...] debug memory (default: poison with <byte>/0x50)\n"
+		"        -V enters verbose mode (disables quiet mode)\n"
+		"        -D goes daemon ; -C changes to <dir> before loading files.\n"
+		"        -W master-worker mode.\n"
+#if defined(USE_SYSTEMD)
+		"        -Ws master-worker mode with systemd notify support.\n"
+#endif
+		"        -q quiet mode : don't display messages\n"
+		"        -c check mode : only check config files and exit\n"
+		"        -cc check condition : evaluate a condition and exit\n"
+		"        -n sets the maximum total # of connections (uses ulimit -n)\n"
+		"        -m limits the usable amount of memory (in MB)\n"
+		"        -N sets the default, per-proxy maximum # of connections (%d)\n"
+		"        -L set local peer name (default to hostname)\n"
+		"        -p writes pids of all children to this file\n"
+#if defined(USE_EPOLL)
+		"        -de disables epoll() usage even when available\n"
+#endif
+#if defined(USE_KQUEUE)
+		"        -dk disables kqueue() usage even when available\n"
+#endif
+#if defined(USE_EVPORTS)
+		"        -dv disables event ports usage even when available\n"
+#endif
+#if defined(USE_POLL)
+		"        -dp disables poll() usage even when available\n"
+#endif
+#if defined(USE_LINUX_SPLICE)
+		"        -dS disables splice usage (broken on old kernels)\n"
+#endif
+#if defined(USE_GETADDRINFO)
+		"        -dG disables getaddrinfo() usage\n"
+#endif
+#if defined(SO_REUSEPORT)
+		"        -dR disables SO_REUSEPORT usage\n"
+#endif
+#if defined(HA_HAVE_DUMP_LIBS)
+		"        -dL dumps loaded object files after config checks\n"
+#endif
+		"        -dK{class[,...]} dump registered keywords (use 'help' for list)\n"
+		"        -dr ignores server address resolution failures\n"
+		"        -dV disables SSL verify on servers side\n"
+		"        -dW fails if any warning is emitted\n"
+		"        -dD diagnostic mode : warn about suspicious configuration statements\n"
+		"        -sf/-st [pid ]* finishes/terminates old pids.\n"
+		"        -x <unix_socket> get listening sockets from a unix socket\n"
+		"        -S <bind>[,<bind options>...] new master CLI\n"
+		"\n",
+		name, cfg_maxpconn);
+	exit(1);
+}
+
+
+
+/*********************************************************************/
+/*   more specific functions   ***************************************/
+/*********************************************************************/
+
+/* sends the signal <sig> to all pids found in <oldpids>. Returns the number of
+ * pids the signal was correctly delivered to.
+ */
+int tell_old_pids(int sig)
+{
+	int p;
+	int ret = 0;
+	for (p = 0; p < nb_oldpids; p++)
+		if (kill(oldpids[p], sig) == 0)
+			ret++;
+	return ret;
+}
+
+/*
+ * remove a pid forom the olpid array and decrease nb_oldpids
+ * return 1 pid was found otherwise return 0
+ */
+
+int delete_oldpid(int pid)
+{
+	int i;
+
+	for (i = 0; i < nb_oldpids; i++) {
+		if (oldpids[i] == pid) {
+			oldpids[i] = oldpids[nb_oldpids - 1];
+			oldpids[nb_oldpids - 1] = 0;
+			nb_oldpids--;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+
+/*
+ * When called, this function reexec haproxy with -sf followed by current
+ * children PIDs and possibly old children PIDs if they didn't leave yet.
+ */
+static void mworker_reexec()
+{
+	char **next_argv = NULL;
+	int old_argc = 0; /* previous number of argument */
+	int next_argc = 0;
+	int i = 0;
+	char *msg = NULL;
+	struct rlimit limit;
+	struct mworker_proc *current_child = NULL;
+
+	mworker_block_signals();
+#if defined(USE_SYSTEMD)
+	if (global.tune.options & GTUNE_USE_SYSTEMD)
+		sd_notify(0, "RELOADING=1");
+#endif
+	setenv("HAPROXY_MWORKER_REEXEC", "1", 1);
+
+	mworker_cleanup_proc();
+	mworker_proc_list_to_env(); /* put the children description in the env */
+
+	/* ensure that we close correctly every listeners before reexecuting */
+	mworker_cleanlisteners();
+
+	/* during the reload we must ensure that every FDs that can't be
+	 * reuse (ie those that are not referenced in the proc_list)
+	 * are closed or they will leak. */
+
+	/* close the listeners FD */
+	mworker_cli_proxy_stop();
+
+	if (fdtab)
+		deinit_pollers();
+
+#ifdef HAVE_SSL_RAND_KEEP_RANDOM_DEVICES_OPEN
+	/* close random device FDs */
+	RAND_keep_random_devices_open(0);
+#endif
+
+	/* restore the initial FD limits */
+	limit.rlim_cur = rlim_fd_cur_at_boot;
+	limit.rlim_max = rlim_fd_max_at_boot;
+	if (raise_rlim_nofile(&limit, &limit) != 0) {
+		ha_warning("Failed to restore initial FD limits (cur=%u max=%u), using cur=%u max=%u\n",
+			   rlim_fd_cur_at_boot, rlim_fd_max_at_boot,
+			   (unsigned int)limit.rlim_cur, (unsigned int)limit.rlim_max);
+	}
+
+	/* compute length  */
+	while (old_argv[old_argc])
+		old_argc++;
+
+	/* 1 for haproxy -sf, 2 for -x /socket */
+	next_argv = calloc(old_argc + 1 + 2 + mworker_child_nb() + 1,
+			   sizeof(*next_argv));
+	if (next_argv == NULL)
+		goto alloc_error;
+
+	/* copy the program name */
+	next_argv[next_argc++] = old_argv[0];
+
+	/* insert the new options just after argv[0] in case we have a -- */
+
+	if (getenv("HAPROXY_MWORKER_WAIT_ONLY") == NULL) {
+		/* add -sf <PID>*  to argv */
+		if (mworker_child_nb() > 0) {
+			struct mworker_proc *child;
+
+			next_argv[next_argc++] = "-sf";
+
+			list_for_each_entry(child, &proc_list, list) {
+				if (!(child->options & PROC_O_LEAVING) && (child->options & PROC_O_TYPE_WORKER))
+					current_child = child;
+
+				if (!(child->options & (PROC_O_TYPE_WORKER|PROC_O_TYPE_PROG)) || child->pid <= -1)
+					continue;
+				if ((next_argv[next_argc++] = memprintf(&msg, "%d", child->pid)) == NULL)
+					goto alloc_error;
+				msg = NULL;
+			}
+		}
+
+		if (current_child) {
+			/* add the -x option with the socketpair of the current worker */
+			next_argv[next_argc++] = "-x";
+			if ((next_argv[next_argc++] = memprintf(&msg, "sockpair@%d", current_child->ipc_fd[0])) == NULL)
+				goto alloc_error;
+			msg = NULL;
+		}
+	}
+
+	/* copy the previous options */
+	for (i = 1; i < old_argc; i++)
+		next_argv[next_argc++] = old_argv[i];
+
+	signal(SIGPROF, SIG_IGN);
+	execvp(next_argv[0], next_argv);
+	ha_warning("Failed to reexecute the master process [%d]: %s\n", pid, strerror(errno));
+	ha_free(&next_argv);
+	return;
+
+alloc_error:
+	ha_free(&next_argv);
+	ha_warning("Failed to reexecute the master process [%d]: Cannot allocate memory\n", pid);
+	return;
+}
+
+/* reexec haproxy in waitmode */
+static void mworker_reexec_waitmode()
+{
+	setenv("HAPROXY_MWORKER_WAIT_ONLY", "1", 1);
+	mworker_reexec();
+}
+
+/* reload haproxy and emit a warning */
+void mworker_reload()
+{
+	struct mworker_proc *child;
+	struct per_thread_deinit_fct *ptdf;
+
+	ha_notice("Reloading HAProxy\n");
+
+	/* close the poller FD and the thread waker pipe FD */
+	list_for_each_entry(ptdf, &per_thread_deinit_list, list)
+		ptdf->fct();
+
+	/* increment the number of reloads */
+	list_for_each_entry(child, &proc_list, list) {
+		child->reloads++;
+	}
+
+	mworker_reexec();
+}
+
+static void mworker_loop()
+{
+
+#if defined(USE_SYSTEMD)
+	if (global.tune.options & GTUNE_USE_SYSTEMD)
+		sd_notifyf(0, "READY=1\nMAINPID=%lu", (unsigned long)getpid());
+#endif
+	/* Busy polling makes no sense in the master :-) */
+	global.tune.options &= ~GTUNE_BUSY_POLLING;
+
+
+	signal_unregister(SIGTTIN);
+	signal_unregister(SIGTTOU);
+	signal_unregister(SIGUSR1);
+	signal_unregister(SIGHUP);
+	signal_unregister(SIGQUIT);
+
+	signal_register_fct(SIGTERM, mworker_catch_sigterm, SIGTERM);
+	signal_register_fct(SIGUSR1, mworker_catch_sigterm, SIGUSR1);
+	signal_register_fct(SIGTTIN, mworker_broadcast_signal, SIGTTIN);
+	signal_register_fct(SIGTTOU, mworker_broadcast_signal, SIGTTOU);
+	signal_register_fct(SIGINT, mworker_catch_sigterm, SIGINT);
+	signal_register_fct(SIGHUP, mworker_catch_sighup, SIGHUP);
+	signal_register_fct(SIGUSR2, mworker_catch_sighup, SIGUSR2);
+	signal_register_fct(SIGCHLD, mworker_catch_sigchld, SIGCHLD);
+
+	mworker_unblock_signals();
+	mworker_cleantasks();
+
+	mworker_catch_sigchld(NULL); /* ensure we clean the children in case
+				     some SIGCHLD were lost */
+
+	jobs++; /* this is the "master" job, we want to take care of the
+		signals even if there is no listener so the poll loop don't
+		leave */
+
+	fork_poller();
+	run_thread_poll_loop(NULL);
+}
+
+/*
+ * Reexec the process in failure mode, instead of exiting
+ */
+void reexec_on_failure()
+{
+	struct mworker_proc *child;
+
+	if (!atexit_flag)
+		return;
+
+	/* get the info of the children in the env */
+	if (mworker_env_to_proc_list() < 0) {
+		exit(EXIT_FAILURE);
+	}
+
+	/* increment the number of failed reloads */
+	list_for_each_entry(child, &proc_list, list) {
+		child->failedreloads++;
+	}
+
+	/* do not keep unused FDs retrieved from the previous process */
+	sock_drop_unused_old_sockets();
+
+	usermsgs_clr(NULL);
+	ha_warning("Loading failure!\n");
+	mworker_reexec_waitmode();
+}
+
+/*
+ * Exit with an error message upon a wait-mode failure.
+ */
+void exit_on_waitmode_failure()
+{
+	if (!atexit_flag)
+		return;
+
+	ha_alert("Non-recoverable mworker wait-mode error, exiting.\n");
+}
+
+
+/*
+ * upon SIGUSR1, let's have a soft stop. Note that soft_stop() broadcasts
+ * a signal zero to all subscribers. This means that it's as easy as
+ * subscribing to signal 0 to get informed about an imminent shutdown.
+ */
+static void sig_soft_stop(struct sig_handler *sh)
+{
+	soft_stop();
+	signal_unregister_handler(sh);
+	pool_gc(NULL);
+}
+
+/*
+ * upon SIGTTOU, we pause everything
+ */
+static void sig_pause(struct sig_handler *sh)
+{
+	if (protocol_pause_all() & ERR_FATAL) {
+		const char *msg = "Some proxies refused to pause, performing soft stop now.\n";
+		ha_warning("%s", msg);
+		send_log(NULL, LOG_WARNING, "%s", msg);
+		soft_stop();
+	}
+	pool_gc(NULL);
+}
+
+/*
+ * upon SIGTTIN, let's have a soft stop.
+ */
+static void sig_listen(struct sig_handler *sh)
+{
+	if (protocol_resume_all() & ERR_FATAL) {
+		const char *msg = "Some proxies refused to resume, probably due to a conflict on a listening port. You may want to try again after the conflicting application is stopped, otherwise a restart might be needed to resume safe operations.\n";
+		ha_warning("%s", msg);
+		send_log(NULL, LOG_WARNING, "%s", msg);
+	}
+}
+
+/*
+ * this function dumps every server's state when the process receives SIGHUP.
+ */
+static void sig_dump_state(struct sig_handler *sh)
+{
+	struct proxy *p = proxies_list;
+
+	ha_warning("SIGHUP received, dumping servers states.\n");
+	while (p) {
+		struct server *s = p->srv;
+
+		send_log(p, LOG_NOTICE, "SIGHUP received, dumping servers states for proxy %s.\n", p->id);
+		while (s) {
+			chunk_printf(&trash,
+			             "SIGHUP: Server %s/%s is %s. Conn: %d act, %d pend, %lld tot.",
+			             p->id, s->id,
+			             (s->cur_state != SRV_ST_STOPPED) ? "UP" : "DOWN",
+			             s->cur_sess, s->queue.length, s->counters.cum_sess);
+			ha_warning("%s\n", trash.area);
+			send_log(p, LOG_NOTICE, "%s\n", trash.area);
+			s = s->next;
+		}
+
+		/* FIXME: those info are a bit outdated. We should be able to distinguish between FE and BE. */
+		if (!p->srv) {
+			chunk_printf(&trash,
+			             "SIGHUP: Proxy %s has no servers. Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
+			             p->id,
+			             p->feconn, p->beconn, p->totpend, p->queue.length, p->fe_counters.cum_conn, p->be_counters.cum_conn);
+		} else if (p->srv_act == 0) {
+			chunk_printf(&trash,
+			             "SIGHUP: Proxy %s %s ! Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
+			             p->id,
+			             (p->srv_bck) ? "is running on backup servers" : "has no server available",
+			             p->feconn, p->beconn, p->totpend, p->queue.length, p->fe_counters.cum_conn, p->be_counters.cum_conn);
+		} else {
+			chunk_printf(&trash,
+			             "SIGHUP: Proxy %s has %d active servers and %d backup servers available."
+			             " Conn: act(FE+BE): %d+%d, %d pend (%d unass), tot(FE+BE): %lld+%lld.",
+			             p->id, p->srv_act, p->srv_bck,
+			             p->feconn, p->beconn, p->totpend, p->queue.length, p->fe_counters.cum_conn, p->be_counters.cum_conn);
+		}
+		ha_warning("%s\n", trash.area);
+		send_log(p, LOG_NOTICE, "%s\n", trash.area);
+
+		p = p->next;
+	}
+}
+
+static void dump(struct sig_handler *sh)
+{
+	/* dump memory usage then free everything possible */
+	dump_pools();
+	pool_gc(NULL);
+}
+
+/*
+ *  This function dup2 the stdio FDs (0,1,2) with <fd>, then closes <fd>
+ *  If <fd> < 0, it opens /dev/null and use it to dup
+ *
+ *  In the case of chrooting, you have to open /dev/null before the chroot, and
+ *  pass the <fd> to this function
+ */
+static void stdio_quiet(int fd)
+{
+	if (fd < 0)
+		fd = open("/dev/null", O_RDWR, 0);
+
+	if (fd > -1) {
+		fclose(stdin);
+		fclose(stdout);
+		fclose(stderr);
+
+		dup2(fd, 0);
+		dup2(fd, 1);
+		dup2(fd, 2);
+		if (fd > 2)
+			close(fd);
+		return;
+	}
+
+	ha_alert("Cannot open /dev/null\n");
+	exit(EXIT_FAILURE);
+}
+
+
+/* This function checks if cfg_cfgfiles contains directories.
+ * If it finds one, it adds all the files (and only files) it contains
+ * in cfg_cfgfiles in place of the directory (and removes the directory).
+ * It adds the files in lexical order.
+ * It adds only files with .cfg extension.
+ * It doesn't add files with name starting with '.'
+ */
+static void cfgfiles_expand_directories(void)
+{
+	struct wordlist *wl, *wlb;
+	char *err = NULL;
+
+	list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
+		struct stat file_stat;
+		struct dirent **dir_entries = NULL;
+		int dir_entries_nb;
+		int dir_entries_it;
+
+		if (stat(wl->s, &file_stat)) {
+			ha_alert("Cannot open configuration file/directory %s : %s\n",
+				 wl->s,
+				 strerror(errno));
+			exit(1);
+		}
+
+		if (!S_ISDIR(file_stat.st_mode))
+			continue;
+
+		/* from this point wl->s is a directory */
+
+		dir_entries_nb = scandir(wl->s, &dir_entries, NULL, alphasort);
+		if (dir_entries_nb < 0) {
+			ha_alert("Cannot open configuration directory %s : %s\n",
+				 wl->s,
+				 strerror(errno));
+			exit(1);
+		}
+
+		/* for each element in the directory wl->s */
+		for (dir_entries_it = 0; dir_entries_it < dir_entries_nb; dir_entries_it++) {
+			struct dirent *dir_entry = dir_entries[dir_entries_it];
+			char *filename = NULL;
+			char *d_name_cfgext = strstr(dir_entry->d_name, ".cfg");
+
+			/* don't add filename that begin with .
+			 * only add filename with .cfg extension
+			 */
+			if (dir_entry->d_name[0] == '.' ||
+			    !(d_name_cfgext && d_name_cfgext[4] == '\0'))
+				goto next_dir_entry;
+
+			if (!memprintf(&filename, "%s/%s", wl->s, dir_entry->d_name)) {
+				ha_alert("Cannot load configuration files %s : out of memory.\n",
+					 filename);
+				exit(1);
+			}
+
+			if (stat(filename, &file_stat)) {
+				ha_alert("Cannot open configuration file %s : %s\n",
+					 wl->s,
+					 strerror(errno));
+				exit(1);
+			}
+
+			/* don't add anything else than regular file in cfg_cfgfiles
+			 * this way we avoid loops
+			 */
+			if (!S_ISREG(file_stat.st_mode))
+				goto next_dir_entry;
+
+			if (!list_append_word(&wl->list, filename, &err)) {
+				ha_alert("Cannot load configuration files %s : %s\n",
+					 filename,
+					 err);
+				exit(1);
+			}
+
+next_dir_entry:
+			free(filename);
+			free(dir_entry);
+		}
+
+		free(dir_entries);
+
+		/* remove the current directory (wl) from cfg_cfgfiles */
+		free(wl->s);
+		LIST_DELETE(&wl->list);
+		free(wl);
+	}
+
+	free(err);
+}
+
+/*
+ * copy and cleanup the current argv
+ * Remove the -sf /-st / -x parameters
+ * Return an allocated copy of argv
+ */
+
+static char **copy_argv(int argc, char **argv)
+{
+	char **newargv, **retargv;
+
+	newargv = calloc(argc + 2, sizeof(*newargv));
+	if (newargv == NULL) {
+		ha_warning("Cannot allocate memory\n");
+		return NULL;
+	}
+	retargv = newargv;
+
+	/* first copy argv[0] */
+	*newargv++ = *argv++;
+	argc--;
+
+	while (argc > 0) {
+		if (**argv != '-') {
+			/* non options are copied but will fail in the argument parser */
+			*newargv++ = *argv++;
+			argc--;
+
+		} else  {
+			char *flag;
+
+			flag = *argv + 1;
+
+			if (flag[0] == '-' && flag[1] == 0) {
+				/* "--\0" copy every arguments till the end of argv */
+				*newargv++ = *argv++;
+				argc--;
+
+				while (argc > 0) {
+					*newargv++ = *argv++;
+					argc--;
+				}
+			} else {
+				switch (*flag) {
+					case 's':
+						/* -sf / -st and their parameters are ignored */
+						if (flag[1] == 'f' || flag[1] == 't') {
+							argc--;
+							argv++;
+							/* The list can't contain a negative value since the only
+							way to know the end of this list is by looking for the
+							next option or the end of the options */
+							while (argc > 0 && argv[0][0] != '-') {
+								argc--;
+								argv++;
+							}
+						} else {
+							argc--;
+							argv++;
+
+						}
+						break;
+
+					case 'x':
+						/* this option and its parameter are ignored */
+						argc--;
+						argv++;
+						if (argc > 0) {
+							argc--;
+							argv++;
+						}
+						break;
+
+					case 'C':
+					case 'n':
+					case 'm':
+					case 'N':
+					case 'L':
+					case 'f':
+					case 'p':
+					case 'S':
+						/* these options have only 1 parameter which must be copied and can start with a '-' */
+						*newargv++ = *argv++;
+						argc--;
+						if (argc == 0)
+							goto error;
+						*newargv++ = *argv++;
+						argc--;
+						break;
+					default:
+						/* for other options just copy them without parameters, this is also done
+						 * for options like "--foo", but this  will fail in the argument parser.
+						 * */
+						*newargv++ = *argv++;
+						argc--;
+						break;
+				}
+			}
+		}
+	}
+
+	return retargv;
+
+error:
+	free(retargv);
+	return NULL;
+}
+
+
+/* Performs basic random seed initialization. The main issue with this is that
+ * srandom_r() only takes 32 bits and purposely provides a reproducible sequence,
+ * which means that there will only be 4 billion possible random sequences once
+ * srandom() is called, regardless of the internal state. Not calling it is
+ * even worse as we'll always produce the same randoms sequences. What we do
+ * here is to create an initial sequence from various entropy sources, hash it
+ * using SHA1 and keep the resulting 160 bits available globally.
+ *
+ * We initialize the current process with the first 32 bits before starting the
+ * polling loop, where all this will be changed to have process specific and
+ * thread specific sequences.
+ *
+ * Before starting threads, it's still possible to call random() as srandom()
+ * is initialized from this, but after threads and/or processes are started,
+ * only ha_random() is expected to be used to guarantee distinct sequences.
+ */
+static void ha_random_boot(char *const *argv)
+{
+	unsigned char message[256];
+	unsigned char *m = message;
+	struct timeval tv;
+	blk_SHA_CTX ctx;
+	unsigned long l;
+	int fd;
+	int i;
+
+	/* start with current time as pseudo-random seed */
+	gettimeofday(&tv, NULL);
+	write_u32(m, tv.tv_sec);  m += 4;
+	write_u32(m, tv.tv_usec); m += 4;
+
+	/* PID and PPID add some OS-based randomness */
+	write_u16(m, getpid());   m += 2;
+	write_u16(m, getppid());  m += 2;
+
+	/* take up to 160 bits bytes from /dev/urandom if available (non-blocking) */
+	fd = open("/dev/urandom", O_RDONLY);
+	if (fd >= 0) {
+		i = read(fd, m, 20);
+		if (i > 0)
+			m += i;
+		close(fd);
+	}
+
+	/* take up to 160 bits bytes from openssl (non-blocking) */
+#ifdef USE_OPENSSL
+	if (RAND_bytes(m, 20) == 1)
+		m += 20;
+#endif
+
+	/* take 160 bits from existing random in case it was already initialized */
+	for (i = 0; i < 5; i++) {
+		write_u32(m, random());
+		m += 4;
+	}
+
+	/* stack address (benefit form operating system's ASLR) */
+	l = (unsigned long)&m;
+	memcpy(m, &l, sizeof(l)); m += sizeof(l);
+
+	/* argv address (benefit form operating system's ASLR) */
+	l = (unsigned long)&argv;
+	memcpy(m, &l, sizeof(l)); m += sizeof(l);
+
+	/* use tv_usec again after all the operations above */
+	gettimeofday(&tv, NULL);
+	write_u32(m, tv.tv_usec); m += 4;
+
+	/*
+	 * At this point, ~84-92 bytes have been used
+	 */
+
+	/* finish with the hostname */
+	strncpy((char *)m, hostname, message + sizeof(message) - m);
+	m += strlen(hostname);
+
+	/* total message length */
+	l = m - message;
+
+	memset(&ctx, 0, sizeof(ctx));
+	blk_SHA1_Init(&ctx);
+	blk_SHA1_Update(&ctx, message, l);
+	blk_SHA1_Final(boot_seed, &ctx);
+
+	srandom(read_u32(boot_seed));
+	ha_random_seed(boot_seed, sizeof(boot_seed));
+}
+
+/* considers splicing proxies' maxconn, computes the ideal global.maxpipes
+ * setting, and returns it. It may return -1 meaning "unlimited" if some
+ * unlimited proxies have been found and the global.maxconn value is not yet
+ * set. It may also return a value greater than maxconn if it's not yet set.
+ * Note that a value of zero means there is no need for pipes. -1 is never
+ * returned if global.maxconn is valid.
+ */
+static int compute_ideal_maxpipes()
+{
+	struct proxy *cur;
+	int nbfe = 0, nbbe = 0;
+	int unlimited = 0;
+	int pipes;
+	int max;
+
+	for (cur = proxies_list; cur; cur = cur->next) {
+		if (cur->options2 & (PR_O2_SPLIC_ANY)) {
+			if (cur->cap & PR_CAP_FE) {
+				max = cur->maxconn;
+				nbfe += max;
+				if (!max) {
+					unlimited = 1;
+					break;
+				}
+			}
+			if (cur->cap & PR_CAP_BE) {
+				max = cur->fullconn ? cur->fullconn : global.maxconn;
+				nbbe += max;
+				if (!max) {
+					unlimited = 1;
+					break;
+				}
+			}
+		}
+	}
+
+	pipes = MAX(nbfe, nbbe);
+	if (global.maxconn) {
+		if (pipes > global.maxconn || unlimited)
+			pipes = global.maxconn;
+	} else if (unlimited) {
+		pipes = -1;
+	}
+
+	return pipes >= 4 ? pipes / 4 : pipes;
+}
+
+/* considers global.maxsocks, global.maxpipes, async engines, SSL frontends and
+ * rlimits and computes an ideal maxconn. It's meant to be called only when
+ * maxsock contains the sum of listening FDs, before it is updated based on
+ * maxconn and pipes. If there are not enough FDs left, DEFAULT_MAXCONN (by
+ * default 100) is returned as it is expected that it will even run on tight
+ * environments, and will maintain compatibility with previous packages that
+ * used to rely on this value as the default one. The system will emit a
+ * warning indicating how many FDs are missing anyway if needed.
+ */
+static int compute_ideal_maxconn()
+{
+	int ssl_sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
+	int engine_fds = global.ssl_used_async_engines * ssl_sides;
+	int pipes = compute_ideal_maxpipes();
+	int remain = MAX(rlim_fd_cur_at_boot, rlim_fd_max_at_boot);
+	int maxconn;
+
+	/* we have to take into account these elements :
+	 *   - number of engine_fds, which inflates the number of FD needed per
+	 *     connection by this number.
+	 *   - number of pipes per connection on average : for the unlimited
+	 *     case, this is 0.5 pipe FDs per connection, otherwise it's a
+	 *     fixed value of 2*pipes.
+	 *   - two FDs per connection
+	 */
+
+	if (global.fd_hard_limit && remain > global.fd_hard_limit)
+		remain = global.fd_hard_limit;
+
+	/* subtract listeners and checks */
+	remain -= global.maxsock;
+
+	/* one epoll_fd/kqueue_fd per thread */
+	remain -= global.nbthread;
+
+	/* one wake-up pipe (2 fd) per thread */
+	remain -= 2 * global.nbthread;
+
+	/* Fixed pipes values : we only subtract them if they're not larger
+	 * than the remaining FDs because pipes are optional.
+	 */
+	if (pipes >= 0 && pipes * 2 < remain)
+		remain -= pipes * 2;
+
+	if (pipes < 0) {
+		/* maxsock = maxconn * 2 + maxconn/4 * 2 + maxconn * engine_fds.
+		 *         = maxconn * (2 + 0.5 + engine_fds)
+		 *         = maxconn * (4 + 1 + 2*engine_fds) / 2
+		 */
+		maxconn = 2 * remain / (5 + 2 * engine_fds);
+	} else {
+		/* maxsock = maxconn * 2 + maxconn * engine_fds.
+		 *         = maxconn * (2 + engine_fds)
+		 */
+		maxconn = remain / (2 + engine_fds);
+	}
+
+	return MAX(maxconn, DEFAULT_MAXCONN);
+}
+
+/* computes the estimated maxsock value for the given maxconn based on the
+ * possibly set global.maxpipes and existing partial global.maxsock. It may
+ * temporarily change global.maxconn for the time needed to propagate the
+ * computations, and will reset it.
+ */
+static int compute_ideal_maxsock(int maxconn)
+{
+	int maxpipes = global.maxpipes;
+	int maxsock  = global.maxsock;
+
+
+	if (!maxpipes) {
+		int old_maxconn = global.maxconn;
+
+		global.maxconn = maxconn;
+		maxpipes = compute_ideal_maxpipes();
+		global.maxconn = old_maxconn;
+	}
+
+	maxsock += maxconn * 2;         /* each connection needs two sockets */
+	maxsock += maxpipes * 2;        /* each pipe needs two FDs */
+	maxsock += global.nbthread;     /* one epoll_fd/kqueue_fd per thread */
+	maxsock += 2 * global.nbthread; /* one wake-up pipe (2 fd) per thread */
+
+	/* compute fd used by async engines */
+	if (global.ssl_used_async_engines) {
+		int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
+
+		maxsock += maxconn * sides * global.ssl_used_async_engines;
+	}
+	return maxsock;
+}
+
+/* Tests if it is possible to set the current process's RLIMIT_NOFILE to
+ * <maxsock>, then sets it back to the previous value. Returns non-zero if the
+ * value is accepted, non-zero otherwise. This is used to determine if an
+ * automatic limit may be applied or not. When it is not, the caller knows that
+ * the highest we can do is the rlim_max at boot. In case of error, we return
+ * that the setting is possible, so that we defer the error processing to the
+ * final stage in charge of enforcing this.
+ */
+static int check_if_maxsock_permitted(int maxsock)
+{
+	struct rlimit orig_limit, test_limit;
+	int ret;
+
+	if (global.fd_hard_limit && maxsock > global.fd_hard_limit)
+		return 0;
+
+	if (getrlimit(RLIMIT_NOFILE, &orig_limit) != 0)
+		return 1;
+
+	/* don't go further if we can't even set to what we have */
+	if (raise_rlim_nofile(NULL, &orig_limit) != 0)
+		return 1;
+
+	test_limit.rlim_max = MAX(maxsock, orig_limit.rlim_max);
+	test_limit.rlim_cur = test_limit.rlim_max;
+	ret = raise_rlim_nofile(NULL, &test_limit);
+
+	if (raise_rlim_nofile(NULL, &orig_limit) != 0)
+		return 1;
+
+	return ret == 0;
+}
+
+/* This performs th every basic early initialization at the end of the PREPARE
+ * init stage. It may only assume that list heads are initialized, but not that
+ * anything else is correct. It will initialize a number of variables that
+ * depend on command line and will pre-parse the command line. If it fails, it
+ * directly exits.
+ */
+static void init_early(int argc, char **argv)
+{
+	char *progname;
+	char *tmp;
+	int len;
+
+	setenv("HAPROXY_STARTUP_VERSION", HAPROXY_VERSION, 0);
+
+	/* First, let's initialize most global variables */
+	totalconn = actconn = listeners = stopping = 0;
+	killed = pid = 0;
+
+	global.maxsock = 10; /* reserve 10 fds ; will be incremented by socket eaters */
+	global.rlimit_memmax_all = HAPROXY_MEMMAX;
+	global.mode = MODE_STARTING;
+
+	/* if we were in mworker mode, we should restart in mworker mode */
+	if (getenv("HAPROXY_MWORKER_REEXEC") != NULL)
+		global.mode |= MODE_MWORKER;
+
+	/* initialize date, time, and pid */
+	tzset();
+	clock_init_process_date();
+	start_date = now;
+	pid = getpid();
+
+	/* Set local host name and adjust some environment variables.
+	 * NB: POSIX does not make it mandatory for gethostname() to
+	 * NULL-terminate the string in case of truncation, and at least
+	 * FreeBSD appears not to do it.
+	 */
+	memset(hostname, 0, sizeof(hostname));
+	gethostname(hostname, sizeof(hostname) - 1);
+
+	/* preset some environment variables */
+	localpeer = strdup(hostname);
+	if (!localpeer || setenv("HAPROXY_LOCALPEER", localpeer, 1) < 0) {
+		ha_alert("Cannot allocate memory for local peer.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	/* Some CPU affinity stuff may have to be initialized */
+#ifdef USE_CPU_AFFINITY
+	{
+		int i;
+		ha_cpuset_zero(&cpu_map.proc);
+		ha_cpuset_zero(&cpu_map.proc_t1);
+		for (i = 0; i < MAX_THREADS; ++i) {
+			ha_cpuset_zero(&cpu_map.thread[i]);
+		}
+	}
+#endif
+
+	/* extract the program name from argv[0], it will be used for the logs
+	 * and error messages.
+	 */
+	progname = *argv;
+	while ((tmp = strchr(progname, '/')) != NULL)
+		progname = tmp + 1;
+
+	len = strlen(progname);
+	progname = strdup(progname);
+	if (!progname) {
+		ha_alert("Cannot allocate memory for log_tag.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	chunk_initlen(&global.log_tag, progname, len, len);
+}
+
+/* handles program arguments. Very minimal parsing is performed, variables are
+ * fed with some values, and lists are completed with other ones. In case of
+ * error, it will exit.
+ */
+static void init_args(int argc, char **argv)
+{
+	char *progname = global.log_tag.area;
+	char *err_msg = NULL;
+
+	/* pre-fill in the global tuning options before we let the cmdline
+	 * change them.
+	 */
+	global.tune.options |= GTUNE_USE_SELECT;  /* select() is always available */
+#if defined(USE_POLL)
+	global.tune.options |= GTUNE_USE_POLL;
+#endif
+#if defined(USE_EPOLL)
+	global.tune.options |= GTUNE_USE_EPOLL;
+#endif
+#if defined(USE_KQUEUE)
+	global.tune.options |= GTUNE_USE_KQUEUE;
+#endif
+#if defined(USE_EVPORTS)
+	global.tune.options |= GTUNE_USE_EVPORTS;
+#endif
+#if defined(USE_LINUX_SPLICE)
+	global.tune.options |= GTUNE_USE_SPLICE;
+#endif
+#if defined(USE_GETADDRINFO)
+	global.tune.options |= GTUNE_USE_GAI;
+#endif
+#if defined(SO_REUSEPORT)
+	global.tune.options |= GTUNE_USE_REUSEPORT;
+#endif
+#ifdef USE_THREAD
+	global.tune.options |= GTUNE_IDLE_POOL_SHARED;
+#endif
+	global.tune.options |= GTUNE_STRICT_LIMITS;
+
+	/* keep a copy of original arguments for the master process */
+	old_argv = copy_argv(argc, argv);
+	if (!old_argv) {
+		ha_alert("failed to copy argv.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	/* skip program name and start */
+	argc--; argv++;
+	while (argc > 0) {
+		char *flag;
+
+		if (**argv == '-') {
+			flag = *argv+1;
+
+			/* 1 arg */
+			if (*flag == 'v') {
+				display_version();
+				if (flag[1] == 'v')  /* -vv */
+					display_build_opts();
+				deinit_and_exit(0);
+			}
+#if defined(USE_EPOLL)
+			else if (*flag == 'd' && flag[1] == 'e')
+				global.tune.options &= ~GTUNE_USE_EPOLL;
+#endif
+#if defined(USE_POLL)
+			else if (*flag == 'd' && flag[1] == 'p')
+				global.tune.options &= ~GTUNE_USE_POLL;
+#endif
+#if defined(USE_KQUEUE)
+			else if (*flag == 'd' && flag[1] == 'k')
+				global.tune.options &= ~GTUNE_USE_KQUEUE;
+#endif
+#if defined(USE_EVPORTS)
+			else if (*flag == 'd' && flag[1] == 'v')
+				global.tune.options &= ~GTUNE_USE_EVPORTS;
+#endif
+#if defined(USE_LINUX_SPLICE)
+			else if (*flag == 'd' && flag[1] == 'S')
+				global.tune.options &= ~GTUNE_USE_SPLICE;
+#endif
+#if defined(USE_GETADDRINFO)
+			else if (*flag == 'd' && flag[1] == 'G')
+				global.tune.options &= ~GTUNE_USE_GAI;
+#endif
+#if defined(SO_REUSEPORT)
+			else if (*flag == 'd' && flag[1] == 'R')
+				global.tune.options &= ~GTUNE_USE_REUSEPORT;
+#endif
+			else if (*flag == 'd' && flag[1] == 'V')
+				global.ssl_server_verify = SSL_SERVER_VERIFY_NONE;
+			else if (*flag == 'V')
+				arg_mode |= MODE_VERBOSE;
+			else if (*flag == 'd' && flag[1] == 'b')
+				arg_mode |= MODE_FOREGROUND;
+			else if (*flag == 'd' && flag[1] == 'D')
+				arg_mode |= MODE_DIAG;
+			else if (*flag == 'd' && flag[1] == 'W')
+				arg_mode |= MODE_ZERO_WARNING;
+			else if (*flag == 'd' && flag[1] == 'M') {
+				int ret = pool_parse_debugging(flag + 2, &err_msg);
+
+				if (ret <= -1) {
+					if (ret < -1)
+						ha_alert("-dM: %s\n", err_msg);
+					else
+						printf("%s\n", err_msg);
+					ha_free(&err_msg);
+					exit(ret < -1 ? EXIT_FAILURE : 0);
+				} else if (ret == 0) {
+					ha_warning("-dM: %s\n", err_msg);
+					ha_free(&err_msg);
+				}
+			}
+			else if (*flag == 'd' && flag[1] == 'r')
+				global.tune.options |= GTUNE_RESOLVE_DONTFAIL;
+#if defined(HA_HAVE_DUMP_LIBS)
+			else if (*flag == 'd' && flag[1] == 'L')
+				arg_mode |= MODE_DUMP_LIBS;
+#endif
+			else if (*flag == 'd' && flag[1] == 'K') {
+				arg_mode |= MODE_DUMP_KWD;
+				kwd_dump = flag + 2;
+			}
+			else if (*flag == 'd')
+				arg_mode |= MODE_DEBUG;
+			else if (*flag == 'c' && flag[1] == 'c') {
+				arg_mode |= MODE_CHECK_CONDITION;
+				argv++;
+				argc--;
+				check_condition = *argv;
+			}
+			else if (*flag == 'c')
+				arg_mode |= MODE_CHECK;
+			else if (*flag == 'D')
+				arg_mode |= MODE_DAEMON;
+			else if (*flag == 'W' && flag[1] == 's') {
+				arg_mode |= MODE_MWORKER | MODE_FOREGROUND;
+#if defined(USE_SYSTEMD)
+				global.tune.options |= GTUNE_USE_SYSTEMD;
+#else
+				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");
+				usage(progname);
+#endif
+			}
+			else if (*flag == 'W')
+				arg_mode |= MODE_MWORKER;
+			else if (*flag == 'q')
+				arg_mode |= MODE_QUIET;
+			else if (*flag == 'x') {
+				if (argc <= 1) {
+					ha_alert("Unix socket path expected with the -x flag\n\n");
+					usage(progname);
+				}
+				if (old_unixsocket)
+					ha_warning("-x option already set, overwriting the value\n");
+				old_unixsocket = argv[1];
+
+				argv++;
+				argc--;
+			}
+			else if (*flag == 'S') {
+				struct wordlist *c;
+
+				if (argc <= 1) {
+					ha_alert("Socket and optional bind parameters expected with the -S flag\n");
+					usage(progname);
+				}
+				if ((c = malloc(sizeof(*c))) == NULL || (c->s = strdup(argv[1])) == NULL) {
+					ha_alert("Cannot allocate memory\n");
+					exit(EXIT_FAILURE);
+				}
+				LIST_INSERT(&mworker_cli_conf, &c->list);
+
+				argv++;
+				argc--;
+			}
+			else if (*flag == 's' && (flag[1] == 'f' || flag[1] == 't')) {
+				/* list of pids to finish ('f') or terminate ('t') */
+
+				if (flag[1] == 'f')
+					oldpids_sig = SIGUSR1; /* finish then exit */
+				else
+					oldpids_sig = SIGTERM; /* terminate immediately */
+				while (argc > 1 && argv[1][0] != '-') {
+					char * endptr = NULL;
+					oldpids = realloc(oldpids, (nb_oldpids + 1) * sizeof(int));
+					if (!oldpids) {
+						ha_alert("Cannot allocate old pid : out of memory.\n");
+						exit(1);
+					}
+					argc--; argv++;
+					errno = 0;
+					oldpids[nb_oldpids] = strtol(*argv, &endptr, 10);
+					if (errno) {
+						ha_alert("-%2s option: failed to parse {%s}: %s\n",
+							 flag,
+							 *argv, strerror(errno));
+						exit(1);
+					} else if (endptr && strlen(endptr)) {
+						while (isspace((unsigned char)*endptr)) endptr++;
+						if (*endptr != 0) {
+							ha_alert("-%2s option: some bytes unconsumed in PID list {%s}\n",
+								 flag, endptr);
+							exit(1);
+						}
+					}
+					if (oldpids[nb_oldpids] <= 0)
+						usage(progname);
+					nb_oldpids++;
+				}
+			}
+			else if (flag[0] == '-' && flag[1] == 0) { /* "--" */
+				/* now that's a cfgfile list */
+				argv++; argc--;
+				while (argc > 0) {
+					if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
+						ha_alert("Cannot load configuration file/directory %s : %s\n",
+							 *argv,
+							 err_msg);
+						exit(1);
+					}
+					argv++; argc--;
+				}
+				break;
+			}
+			else { /* >=2 args */
+				argv++; argc--;
+				if (argc == 0)
+					usage(progname);
+
+				switch (*flag) {
+				case 'C' : change_dir = *argv; break;
+				case 'n' : cfg_maxconn = atol(*argv); break;
+				case 'm' : global.rlimit_memmax_all = atol(*argv); break;
+				case 'N' : cfg_maxpconn = atol(*argv); break;
+				case 'L' :
+					free(localpeer);
+					if ((localpeer = strdup(*argv)) == NULL) {
+						ha_alert("Cannot allocate memory for local peer.\n");
+						exit(EXIT_FAILURE);
+					}
+					setenv("HAPROXY_LOCALPEER", localpeer, 1);
+					global.localpeer_cmdline = 1;
+					break;
+				case 'f' :
+					if (!list_append_word(&cfg_cfgfiles, *argv, &err_msg)) {
+						ha_alert("Cannot load configuration file/directory %s : %s\n",
+							 *argv,
+							 err_msg);
+						exit(1);
+					}
+					break;
+				case 'p' :
+					free(global.pidfile);
+					if ((global.pidfile = strdup(*argv)) == NULL) {
+						ha_alert("Cannot allocate memory for pidfile.\n");
+						exit(EXIT_FAILURE);
+					}
+					break;
+				default: usage(progname);
+				}
+			}
+		}
+		else
+			usage(progname);
+		argv++; argc--;
+	}
+	free(err_msg);
+}
+
+/* call the various keyword dump functions based on the comma-delimited list of
+ * classes in kwd_dump.
+ */
+static void dump_registered_keywords(void)
+{
+	char *end;
+	int all __maybe_unused = 0;
+
+	for (; kwd_dump && *kwd_dump; kwd_dump = end) {
+		end = strchr(kwd_dump, ',');
+		if (end)
+			*(end++) = 0;
+
+		if (strcmp(kwd_dump, "help") == 0) {
+			printf("# List of supported keyword classes:\n");
+			printf("all: list all keywords\n");
+			printf("acl: ACL keywords\n");
+			printf("cfg: configuration keywords\n");
+			printf("cli: CLI keywords\n");
+			printf("cnv: sample converter keywords\n");
+			printf("flt: filter names\n");
+			printf("smp: sample fetch functions\n");
+			printf("svc: service names\n");
+			continue;
+		}
+		else if (strcmp(kwd_dump, "all") == 0) {
+			all = 1;
+		}
+
+		if (all || strcmp(kwd_dump, "acl") == 0) {
+			printf("# List of registered ACL keywords:\n");
+			acl_dump_kwd();
+		}
+
+		if (all || strcmp(kwd_dump, "cfg") == 0) {
+			printf("# List of registered configuration keywords:\n");
+			cfg_dump_registered_keywords();
+		}
+
+		if (all || strcmp(kwd_dump, "cli") == 0) {
+			printf("# List of registered CLI keywords:\n");
+			cli_list_keywords();
+		}
+
+		if (all || strcmp(kwd_dump, "cnv") == 0) {
+			printf("# List of registered sample converter functions:\n");
+			smp_dump_conv_kw();
+		}
+
+		if (all || strcmp(kwd_dump, "flt") == 0) {
+			printf("# List of registered filter names:\n");
+			flt_dump_kws(NULL);
+		}
+
+		if (all || strcmp(kwd_dump, "smp") == 0) {
+			printf("# List of registered sample fetch functions:\n");
+			smp_dump_fetch_kw();
+		}
+
+		if (all || strcmp(kwd_dump, "svc") == 0) {
+			printf("# List of registered service names:\n");
+			list_services(NULL);
+		}
+	}
+}
+
+/* Generate a random cluster-secret in case the setting is not provided in the
+ * configuration. This allows to use features which rely on it albeit with some
+ * limitations.
+ */
+static void generate_random_cluster_secret()
+{
+	/* used as a default random cluster-secret if none defined. */
+	uint64_t rand = ha_random64();
+
+	/* The caller must not overwrite an already defined secret. */
+	BUG_ON(global.cluster_secret);
+
+	global.cluster_secret = malloc(8);
+	if (!global.cluster_secret)
+		return;
+
+	memcpy(global.cluster_secret, &rand, sizeof(rand));
+	global.cluster_secret[7] = '\0';
+}
+
+/*
+ * This function initializes all the necessary variables. It only returns
+ * if everything is OK. If something fails, it exits.
+ */
+static void init(int argc, char **argv)
+{
+	char *progname = global.log_tag.area;
+	int err_code = 0;
+	struct wordlist *wl;
+	struct proxy *px;
+	struct post_check_fct *pcf;
+	struct pre_check_fct *prcf;
+	int ideal_maxconn;
+
+	if (!init_trash_buffers(1)) {
+		ha_alert("failed to initialize trash buffers.\n");
+		exit(1);
+	}
+
+	if (init_acl() != 0)
+		exit(1);
+
+	/* Initialise lua. */
+	hlua_init();
+
+	global.mode |= (arg_mode & (MODE_DAEMON | MODE_MWORKER | MODE_FOREGROUND | MODE_VERBOSE
+				    | MODE_QUIET | MODE_CHECK | MODE_DEBUG | MODE_ZERO_WARNING
+				    | MODE_DIAG | MODE_CHECK_CONDITION | MODE_DUMP_LIBS | MODE_DUMP_KWD));
+
+	if (getenv("HAPROXY_MWORKER_WAIT_ONLY")) {
+		unsetenv("HAPROXY_MWORKER_WAIT_ONLY");
+		global.mode |= MODE_MWORKER_WAIT;
+		global.mode &= ~MODE_MWORKER;
+	}
+
+	/* set the atexit functions when not doing configuration check */
+	if (!(global.mode & (MODE_CHECK | MODE_CHECK_CONDITION))
+	    && (getenv("HAPROXY_MWORKER_REEXEC") != NULL)) {
+
+		if (global.mode & MODE_MWORKER) {
+			atexit_flag = 1;
+			atexit(reexec_on_failure);
+		} else if (global.mode & MODE_MWORKER_WAIT) {
+			atexit_flag = 1;
+			atexit(exit_on_waitmode_failure);
+		}
+	}
+
+	if (change_dir && chdir(change_dir) < 0) {
+		ha_alert("Could not change to directory %s : %s\n", change_dir, strerror(errno));
+		exit(1);
+	}
+
+	usermsgs_clr("config");
+
+	if (global.mode & MODE_CHECK_CONDITION) {
+		int result;
+
+		uint32_t err;
+		const char *errptr;
+		char *errmsg = NULL;
+
+		char *args[MAX_LINE_ARGS+1];
+		int arg = sizeof(args) / sizeof(*args);
+		size_t outlen;
+		char *w;
+
+		if (!check_condition)
+			usage(progname);
+
+		outlen = strlen(check_condition) + 1;
+		err = parse_line(check_condition, check_condition, &outlen, args, &arg,
+		                 PARSE_OPT_ENV | PARSE_OPT_WORD_EXPAND | PARSE_OPT_DQUOTE | PARSE_OPT_SQUOTE | PARSE_OPT_BKSLASH,
+		                 &errptr);
+
+		if (err & PARSE_ERR_QUOTE) {
+			ha_alert("Syntax Error in condition: Unmatched quote.\n");
+			exit(2);
+		}
+
+		if (err & PARSE_ERR_HEX) {
+			ha_alert("Syntax Error in condition: Truncated or invalid hexadecimal sequence.\n");
+			exit(2);
+		}
+
+		if (err & (PARSE_ERR_TOOLARGE|PARSE_ERR_OVERLAP)) {
+			ha_alert("Error in condition: Line too long.\n");
+			exit(2);
+		}
+
+		if (err & PARSE_ERR_TOOMANY) {
+			ha_alert("Error in condition: Too many words.\n");
+			exit(2);
+		}
+
+		if (err) {
+			ha_alert("Unhandled error in condition, please report this to the developers.\n");
+			exit(2);
+		}
+
+		/* remerge all words into a single expression */
+		for (w = *args; (w += strlen(w)) < check_condition + outlen - 1; *w = ' ')
+			;
+
+		result = cfg_eval_condition(args, &errmsg, &errptr);
+
+		if (result < 0) {
+			if (errmsg)
+				ha_alert("Failed to evaluate condition: %s\n", errmsg);
+
+			exit(2);
+		}
+
+		exit(result ? 0 : 1);
+	}
+
+	/* in wait mode, we don't try to read the configuration files */
+	if (!(global.mode & MODE_MWORKER_WAIT)) {
+		char *env_cfgfiles = NULL;
+		int env_err = 0;
+
+		/* handle cfgfiles that are actually directories */
+		cfgfiles_expand_directories();
+
+		if (LIST_ISEMPTY(&cfg_cfgfiles))
+			usage(progname);
+
+
+		list_for_each_entry(wl, &cfg_cfgfiles, list) {
+			int ret;
+
+			if (env_err == 0) {
+				if (!memprintf(&env_cfgfiles, "%s%s%s",
+					       (env_cfgfiles ? env_cfgfiles : ""),
+					       (env_cfgfiles ? ";" : ""), wl->s))
+					env_err = 1;
+			}
+
+			ret = readcfgfile(wl->s);
+			if (ret == -1) {
+				ha_alert("Could not open configuration file %s : %s\n",
+					 wl->s, strerror(errno));
+				free(env_cfgfiles);
+				exit(1);
+			}
+			if (ret & (ERR_ABORT|ERR_FATAL))
+				ha_alert("Error(s) found in configuration file : %s\n", wl->s);
+			err_code |= ret;
+			if (err_code & ERR_ABORT) {
+				free(env_cfgfiles);
+				exit(1);
+			}
+		}
+
+		/* do not try to resolve arguments nor to spot inconsistencies when
+		 * the configuration contains fatal errors caused by files not found
+		 * or failed memory allocations.
+		 */
+		if (err_code & (ERR_ABORT|ERR_FATAL)) {
+			ha_alert("Fatal errors found in configuration.\n");
+			free(env_cfgfiles);
+			exit(1);
+		}
+		if (env_err) {
+			ha_alert("Could not allocate memory for HAPROXY_CFGFILES env variable\n");
+			exit(1);
+		}
+		setenv("HAPROXY_CFGFILES", env_cfgfiles, 1);
+		free(env_cfgfiles);
+
+	}
+	if (global.mode & MODE_MWORKER) {
+		struct mworker_proc *tmproc;
+
+		setenv("HAPROXY_MWORKER", "1", 1);
+
+		if (getenv("HAPROXY_MWORKER_REEXEC") == NULL) {
+
+			tmproc = mworker_proc_new();
+			if (!tmproc) {
+				ha_alert("Cannot allocate process structures.\n");
+				exit(EXIT_FAILURE);
+			}
+			tmproc->options |= PROC_O_TYPE_MASTER; /* master */
+			tmproc->pid = pid;
+			tmproc->timestamp = start_date.tv_sec;
+			proc_self = tmproc;
+
+			LIST_APPEND(&proc_list, &tmproc->list);
+		}
+
+		tmproc = mworker_proc_new();
+		if (!tmproc) {
+			ha_alert("Cannot allocate process structures.\n");
+			exit(EXIT_FAILURE);
+		}
+		tmproc->options |= PROC_O_TYPE_WORKER; /* worker */
+
+		if (mworker_cli_sockpair_new(tmproc, 0) < 0) {
+			exit(EXIT_FAILURE);
+		}
+
+		LIST_APPEND(&proc_list, &tmproc->list);
+	}
+
+	if (global.mode & MODE_MWORKER_WAIT) {
+		/* in exec mode, there's always exactly one thread. Failure to
+		 * set these ones now will result in nbthread being detected
+		 * automatically.
+		 */
+		global.nbthread = 1;
+#ifdef USE_THREAD
+		tid_bit = 1;
+		all_threads_mask = 1;
+#endif
+	}
+
+	if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
+		struct wordlist *it, *c;
+
+		/* get the info of the children in the env */
+		if (mworker_env_to_proc_list() < 0) {
+			exit(EXIT_FAILURE);
+		}
+
+		if (!LIST_ISEMPTY(&mworker_cli_conf)) {
+
+			if (mworker_cli_proxy_create() < 0) {
+				ha_alert("Can't create the master's CLI.\n");
+				exit(EXIT_FAILURE);
+			}
+
+			list_for_each_entry_safe(c, it, &mworker_cli_conf, list) {
+
+				if (mworker_cli_proxy_new_listener(c->s) < 0) {
+					ha_alert("Can't create the master's CLI.\n");
+					exit(EXIT_FAILURE);
+				}
+				LIST_DELETE(&c->list);
+				free(c->s);
+				free(c);
+			}
+		}
+	}
+
+	if (!LIST_ISEMPTY(&mworker_cli_conf) && !(arg_mode & MODE_MWORKER)) {
+		ha_warning("a master CLI socket was defined, but master-worker mode (-W) is not enabled.\n");
+	}
+
+	/* destroy unreferenced defaults proxies  */
+	proxy_destroy_all_unref_defaults();
+
+	list_for_each_entry(prcf, &pre_check_list, list)
+		err_code |= prcf->fct();
+
+	if (err_code & (ERR_ABORT|ERR_FATAL)) {
+		ha_alert("Fatal errors found in configuration.\n");
+		exit(1);
+	}
+
+	err_code |= check_config_validity();
+	for (px = proxies_list; px; px = px->next) {
+		struct server *srv;
+		struct post_proxy_check_fct *ppcf;
+		struct post_server_check_fct *pscf;
+
+		if (px->flags & (PR_FL_DISABLED|PR_FL_STOPPED))
+			continue;
+
+		list_for_each_entry(pscf, &post_server_check_list, list) {
+			for (srv = px->srv; srv; srv = srv->next)
+				err_code |= pscf->fct(srv);
+		}
+		list_for_each_entry(ppcf, &post_proxy_check_list, list)
+			err_code |= ppcf->fct(px);
+	}
+	if (err_code & (ERR_ABORT|ERR_FATAL)) {
+		ha_alert("Fatal errors found in configuration.\n");
+		exit(1);
+	}
+
+	err_code |= pattern_finalize_config();
+	if (err_code & (ERR_ABORT|ERR_FATAL)) {
+		ha_alert("Failed to finalize pattern config.\n");
+		exit(1);
+	}
+
+	if (global.rlimit_memmax_all)
+		global.rlimit_memmax = global.rlimit_memmax_all;
+
+#ifdef USE_NS
+        err_code |= netns_init();
+        if (err_code & (ERR_ABORT|ERR_FATAL)) {
+                ha_alert("Failed to initialize namespace support.\n");
+                exit(1);
+        }
+#endif
+
+	/* Apply server states */
+	apply_server_state();
+
+	for (px = proxies_list; px; px = px->next)
+		srv_compute_all_admin_states(px);
+
+	/* Apply servers' configured address */
+	err_code |= srv_init_addr();
+	if (err_code & (ERR_ABORT|ERR_FATAL)) {
+		ha_alert("Failed to initialize server(s) addr.\n");
+		exit(1);
+	}
+
+	if (warned & WARN_ANY && global.mode & MODE_ZERO_WARNING) {
+		ha_alert("Some warnings were found and 'zero-warning' is set. Aborting.\n");
+		exit(1);
+	}
+
+#if defined(HA_HAVE_DUMP_LIBS)
+	if (global.mode & MODE_DUMP_LIBS) {
+		qfprintf(stdout, "List of loaded object files:\n");
+		chunk_reset(&trash);
+		if (dump_libs(&trash, 0))
+			printf("%s", trash.area);
+	}
+#endif
+
+	if (global.mode & MODE_DUMP_KWD)
+		dump_registered_keywords();
+
+	if (global.mode & MODE_CHECK) {
+		struct peers *pr;
+		struct proxy *px;
+
+		if (warned & WARN_ANY)
+			qfprintf(stdout, "Warnings were found.\n");
+
+		for (pr = cfg_peers; pr; pr = pr->next)
+			if (pr->peers_fe)
+				break;
+
+		for (px = proxies_list; px; px = px->next)
+			if (!(px->flags & (PR_FL_DISABLED|PR_FL_STOPPED)) && px->li_all)
+				break;
+
+		if (!px) {
+			/* We may only have log-forward section */
+			for (px = cfg_log_forward; px; px = px->next)
+				if (!(px->flags & (PR_FL_DISABLED|PR_FL_STOPPED)) && px->li_all)
+					break;
+		}
+
+		if (pr || px) {
+			/* At least one peer or one listener has been found */
+			qfprintf(stdout, "Configuration file is valid\n");
+			deinit_and_exit(0);
+		}
+		qfprintf(stdout, "Configuration file has no error but will not start (no listener) => exit(2).\n");
+		exit(2);
+	}
+
+	if (global.mode & MODE_DIAG) {
+		cfg_run_diagnostics();
+	}
+
+	/* Initialize the random generators */
+#ifdef USE_OPENSSL
+	/* Initialize SSL random generator. Must be called before chroot for
+	 * access to /dev/urandom, and before ha_random_boot() which may use
+	 * RAND_bytes().
+	 */
+	if (!ssl_initialize_random()) {
+		ha_alert("OpenSSL random data generator initialization failed.\n");
+		exit(EXIT_FAILURE);
+	}
+#endif
+	ha_random_boot(argv); // the argv pointer brings some kernel-fed entropy
+
+	/* now we know the buffer size, we can initialize the channels and buffers */
+	init_buffer();
+
+	list_for_each_entry(pcf, &post_check_list, list) {
+		err_code |= pcf->fct();
+		if (err_code & (ERR_ABORT|ERR_FATAL))
+			exit(1);
+	}
+
+	/* set the default maxconn in the master, but let it be rewritable with -n */
+	if (global.mode & MODE_MWORKER_WAIT)
+		global.maxconn = MASTER_MAXCONN;
+
+	if (cfg_maxconn > 0)
+		global.maxconn = cfg_maxconn;
+
+	if (global.cli_fe)
+		global.maxsock += global.cli_fe->maxconn;
+
+	if (cfg_peers) {
+		/* peers also need to bypass global maxconn */
+		struct peers *p = cfg_peers;
+
+		for (p = cfg_peers; p; p = p->next)
+			if (p->peers_fe)
+				global.maxsock += p->peers_fe->maxconn;
+	}
+
+	/* Now we want to compute the maxconn and possibly maxsslconn values.
+	 * It's a bit tricky. Maxconn defaults to the pre-computed value based
+	 * on rlim_fd_cur and the number of FDs in use due to the configuration,
+	 * and maxsslconn defaults to DEFAULT_MAXSSLCONN. On top of that we can
+	 * enforce a lower limit based on memmax.
+	 *
+	 * If memmax is set, then it depends on which values are set. If
+	 * maxsslconn is set, we use memmax to determine how many cleartext
+	 * connections may be added, and set maxconn to the sum of the two.
+	 * If maxconn is set and not maxsslconn, maxsslconn is computed from
+	 * the remaining amount of memory between memmax and the cleartext
+	 * connections. If neither are set, then it is considered that all
+	 * connections are SSL-capable, and maxconn is computed based on this,
+	 * then maxsslconn accordingly. We need to know if SSL is used on the
+	 * frontends, backends, or both, because when it's used on both sides,
+	 * we need twice the value for maxsslconn, but we only count the
+	 * handshake once since it is not performed on the two sides at the
+	 * same time (frontend-side is terminated before backend-side begins).
+	 * The SSL stack is supposed to have filled ssl_session_cost and
+	 * ssl_handshake_cost during its initialization. In any case, if
+	 * SYSTEM_MAXCONN is set, we still enforce it as an upper limit for
+	 * maxconn in order to protect the system.
+	 */
+	ideal_maxconn = compute_ideal_maxconn();
+
+	if (!global.rlimit_memmax) {
+		if (global.maxconn == 0) {
+			global.maxconn = ideal_maxconn;
+			if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
+				fprintf(stderr, "Note: setting global.maxconn to %d.\n", global.maxconn);
+		}
+	}
+#ifdef USE_OPENSSL
+	else if (!global.maxconn && !global.maxsslconn &&
+		 (global.ssl_used_frontend || global.ssl_used_backend)) {
+		/* memmax is set, compute everything automatically. Here we want
+		 * to ensure that all SSL connections will be served. We take
+		 * care of the number of sides where SSL is used, and consider
+		 * the worst case : SSL used on both sides and doing a handshake
+		 * simultaneously. Note that we can't have more than maxconn
+		 * handshakes at a time by definition, so for the worst case of
+		 * two SSL conns per connection, we count a single handshake.
+		 */
+		int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
+		int64_t mem = global.rlimit_memmax * 1048576ULL;
+		int retried = 0;
+
+		mem -= global.tune.sslcachesize * 200ULL; // about 200 bytes per SSL cache entry
+		mem -= global.maxzlibmem;
+		mem = mem * MEM_USABLE_RATIO;
+
+		/* Principle: we test once to set maxconn according to the free
+		 * memory. If it results in values the system rejects, we try a
+		 * second time by respecting rlim_fd_max. If it fails again, we
+		 * go back to the initial value and will let the final code
+		 * dealing with rlimit report the error. That's up to 3 attempts.
+		 */
+		do {
+			global.maxconn = mem /
+				((STREAM_MAX_COST + 2 * global.tune.bufsize) +    // stream + 2 buffers per stream
+				 sides * global.ssl_session_max_cost +            // SSL buffers, one per side
+				 global.ssl_handshake_max_cost);                  // 1 handshake per connection max
+
+			if (retried == 1)
+				global.maxconn = MIN(global.maxconn, ideal_maxconn);
+			global.maxconn = round_2dig(global.maxconn);
+#ifdef SYSTEM_MAXCONN
+			if (global.maxconn > SYSTEM_MAXCONN)
+				global.maxconn = SYSTEM_MAXCONN;
+#endif /* SYSTEM_MAXCONN */
+			global.maxsslconn = sides * global.maxconn;
+
+			if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
+				break;
+		} while (retried++ < 2);
+
+		if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
+			fprintf(stderr, "Note: setting global.maxconn to %d and global.maxsslconn to %d.\n",
+			        global.maxconn, global.maxsslconn);
+	}
+	else if (!global.maxsslconn &&
+		 (global.ssl_used_frontend || global.ssl_used_backend)) {
+		/* memmax and maxconn are known, compute maxsslconn automatically.
+		 * maxsslconn being forced, we don't know how many of it will be
+		 * on each side if both sides are being used. The worst case is
+		 * when all connections use only one SSL instance because
+		 * handshakes may be on two sides at the same time.
+		 */
+		int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
+		int64_t mem = global.rlimit_memmax * 1048576ULL;
+		int64_t sslmem;
+
+		mem -= global.tune.sslcachesize * 200ULL; // about 200 bytes per SSL cache entry
+		mem -= global.maxzlibmem;
+		mem = mem * MEM_USABLE_RATIO;
+
+		sslmem = mem - global.maxconn * (int64_t)(STREAM_MAX_COST + 2 * global.tune.bufsize);
+		global.maxsslconn = sslmem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost);
+		global.maxsslconn = round_2dig(global.maxsslconn);
+
+		if (sslmem <= 0 || global.maxsslconn < sides) {
+			ha_alert("Cannot compute the automatic maxsslconn because global.maxconn is already too "
+				 "high for the global.memmax value (%d MB). The absolute maximum possible value "
+				 "without SSL is %d, but %d was found and SSL is in use.\n",
+				 global.rlimit_memmax,
+				 (int)(mem / (STREAM_MAX_COST + 2 * global.tune.bufsize)),
+				 global.maxconn);
+			exit(1);
+		}
+
+		if (global.maxsslconn > sides * global.maxconn)
+			global.maxsslconn = sides * global.maxconn;
+
+		if (global.mode & (MODE_VERBOSE|MODE_DEBUG))
+			fprintf(stderr, "Note: setting global.maxsslconn to %d\n", global.maxsslconn);
+	}
+#endif
+	else if (!global.maxconn) {
+		/* memmax and maxsslconn are known/unused, compute maxconn automatically */
+		int sides = !!global.ssl_used_frontend + !!global.ssl_used_backend;
+		int64_t mem = global.rlimit_memmax * 1048576ULL;
+		int64_t clearmem;
+		int retried = 0;
+
+		if (global.ssl_used_frontend || global.ssl_used_backend)
+			mem -= global.tune.sslcachesize * 200ULL; // about 200 bytes per SSL cache entry
+
+		mem -= global.maxzlibmem;
+		mem = mem * MEM_USABLE_RATIO;
+
+		clearmem = mem;
+		if (sides)
+			clearmem -= (global.ssl_session_max_cost + global.ssl_handshake_max_cost) * (int64_t)global.maxsslconn;
+
+		/* Principle: we test once to set maxconn according to the free
+		 * memory. If it results in values the system rejects, we try a
+		 * second time by respecting rlim_fd_max. If it fails again, we
+		 * go back to the initial value and will let the final code
+		 * dealing with rlimit report the error. That's up to 3 attempts.
+		 */
+		do {
+			global.maxconn = clearmem / (STREAM_MAX_COST + 2 * global.tune.bufsize);
+			if (retried == 1)
+				global.maxconn = MIN(global.maxconn, ideal_maxconn);
+			global.maxconn = round_2dig(global.maxconn);
+#ifdef SYSTEM_MAXCONN
+			if (global.maxconn > SYSTEM_MAXCONN)
+				global.maxconn = SYSTEM_MAXCONN;
+#endif /* SYSTEM_MAXCONN */
+
+			if (clearmem <= 0 || !global.maxconn) {
+				ha_alert("Cannot compute the automatic maxconn because global.maxsslconn is already too "
+					 "high for the global.memmax value (%d MB). The absolute maximum possible value "
+					 "is %d, but %d was found.\n",
+					 global.rlimit_memmax,
+				 (int)(mem / (global.ssl_session_max_cost + global.ssl_handshake_max_cost)),
+					 global.maxsslconn);
+				exit(1);
+			}
+
+			if (check_if_maxsock_permitted(compute_ideal_maxsock(global.maxconn)))
+				break;
+		} while (retried++ < 2);
+
+		if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
+			if (sides && global.maxsslconn > sides * global.maxconn) {
+				fprintf(stderr, "Note: global.maxsslconn is forced to %d which causes global.maxconn "
+				        "to be limited to %d. Better reduce global.maxsslconn to get more "
+				        "room for extra connections.\n", global.maxsslconn, global.maxconn);
+			}
+			fprintf(stderr, "Note: setting global.maxconn to %d\n", global.maxconn);
+		}
+	}
+
+	global.maxsock = compute_ideal_maxsock(global.maxconn);
+	global.hardmaxconn = global.maxconn;
+	if (!global.maxpipes)
+		global.maxpipes = compute_ideal_maxpipes();
+
+	/* update connection pool thresholds */
+	global.tune.pool_low_count  = ((long long)global.maxsock * global.tune.pool_low_ratio  + 99) / 100;
+	global.tune.pool_high_count = ((long long)global.maxsock * global.tune.pool_high_ratio + 99) / 100;
+
+	proxy_adjust_all_maxconn();
+
+	if (global.tune.maxpollevents <= 0)
+		global.tune.maxpollevents = MAX_POLL_EVENTS;
+
+	if (global.tune.runqueue_depth <= 0) {
+		/* tests on various thread counts from 1 to 64 have shown an
+		 * optimal queue depth following roughly 1/sqrt(threads).
+		 */
+		int s = my_flsl(global.nbthread);
+		s += (global.nbthread / s); // roughly twice the sqrt.
+		global.tune.runqueue_depth = RUNQUEUE_DEPTH * 2 / s;
+	}
+
+	if (global.tune.recv_enough == 0)
+		global.tune.recv_enough = MIN_RECV_AT_ONCE_ENOUGH;
+
+	if (global.tune.maxrewrite >= global.tune.bufsize / 2)
+		global.tune.maxrewrite = global.tune.bufsize / 2;
+
+	usermsgs_clr(NULL);
+
+	if (arg_mode & (MODE_DEBUG | MODE_FOREGROUND)) {
+		/* command line debug mode inhibits configuration mode */
+		global.mode &= ~(MODE_DAEMON | MODE_QUIET);
+		global.mode |= (arg_mode & (MODE_DEBUG | MODE_FOREGROUND));
+	}
+
+	if (arg_mode & MODE_DAEMON) {
+		/* command line daemon mode inhibits foreground and debug modes mode */
+		global.mode &= ~(MODE_DEBUG | MODE_FOREGROUND);
+		global.mode |= arg_mode & MODE_DAEMON;
+	}
+
+	global.mode |= (arg_mode & (MODE_QUIET | MODE_VERBOSE));
+
+	if ((global.mode & MODE_DEBUG) && (global.mode & (MODE_DAEMON | MODE_QUIET))) {
+		ha_warning("<debug> mode incompatible with <quiet> and <daemon>. Keeping <debug> only.\n");
+		global.mode &= ~(MODE_DAEMON | MODE_QUIET);
+	}
+
+	if (global.nbthread < 1)
+		global.nbthread = 1;
+
+	/* Realloc trash buffers because global.tune.bufsize may have changed */
+	if (!init_trash_buffers(0)) {
+		ha_alert("failed to initialize trash buffers.\n");
+		exit(1);
+	}
+
+	if (!init_log_buffers()) {
+		ha_alert("failed to initialize log buffers.\n");
+		exit(1);
+	}
+
+	if (!global.cluster_secret)
+		generate_random_cluster_secret();
+
+	/*
+	 * Note: we could register external pollers here.
+	 * Built-in pollers have been registered before main().
+	 */
+
+	if (!(global.tune.options & GTUNE_USE_KQUEUE))
+		disable_poller("kqueue");
+
+	if (!(global.tune.options & GTUNE_USE_EVPORTS))
+		disable_poller("evports");
+
+	if (!(global.tune.options & GTUNE_USE_EPOLL))
+		disable_poller("epoll");
+
+	if (!(global.tune.options & GTUNE_USE_POLL))
+		disable_poller("poll");
+
+	if (!(global.tune.options & GTUNE_USE_SELECT))
+		disable_poller("select");
+
+	/* Note: we could disable any poller by name here */
+
+	if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
+		list_pollers(stderr);
+		fprintf(stderr, "\n");
+		list_filters(stderr);
+	}
+
+	if (!init_pollers()) {
+		ha_alert("No polling mechanism available.\n"
+			 "  It is likely that haproxy was built with TARGET=generic and that FD_SETSIZE\n"
+			 "  is too low on this platform to support maxconn and the number of listeners\n"
+			 "  and servers. You should rebuild haproxy specifying your system using TARGET=\n"
+			 "  in order to support other polling systems (poll, epoll, kqueue) or reduce the\n"
+			 "  global maxconn setting to accommodate the system's limitation. For reference,\n"
+			 "  FD_SETSIZE=%d on this system, global.maxconn=%d resulting in a maximum of\n"
+			 "  %d file descriptors. You should thus reduce global.maxconn by %d. Also,\n"
+			 "  check build settings using 'haproxy -vv'.\n\n",
+			 FD_SETSIZE, global.maxconn, global.maxsock, (global.maxsock + 1 - FD_SETSIZE) / 2);
+		exit(1);
+	}
+	if (global.mode & (MODE_VERBOSE|MODE_DEBUG)) {
+		printf("Using %s() as the polling mechanism.\n", cur_poller.name);
+	}
+
+	if (!global.node)
+		global.node = strdup(hostname);
+
+	/* stop disabled proxies */
+	for (px = proxies_list; px; px = px->next) {
+		if (px->flags & (PR_FL_DISABLED|PR_FL_STOPPED))
+			stop_proxy(px);
+	}
+
+	if (!hlua_post_init())
+		exit(1);
+}
+
+void deinit(void)
+{
+	struct proxy *p = proxies_list, *p0;
+	struct wordlist *wl, *wlb;
+	struct uri_auth *uap, *ua = NULL;
+	struct logsrv *log, *logb;
+	struct build_opts_str *bol, *bolb;
+	struct post_deinit_fct *pdf, *pdfb;
+	struct proxy_deinit_fct *pxdf, *pxdfb;
+	struct server_deinit_fct *srvdf, *srvdfb;
+	struct per_thread_init_fct *tif, *tifb;
+	struct per_thread_deinit_fct *tdf, *tdfb;
+	struct per_thread_alloc_fct *taf, *tafb;
+	struct per_thread_free_fct *tff, *tffb;
+	struct post_server_check_fct *pscf, *pscfb;
+	struct post_check_fct *pcf, *pcfb;
+	struct post_proxy_check_fct *ppcf, *ppcfb;
+	struct pre_check_fct *prcf, *prcfb;
+	struct cfg_postparser *pprs, *pprsb;
+	int cur_fd;
+
+	/* At this point the listeners state is weird:
+	 *  - most listeners are still bound and referenced in their protocol
+	 *  - some might be zombies that are not in their proto anymore, but
+	 *    still appear in their proxy's listeners with a valid FD.
+	 *  - some might be stopped and still appear in their proxy as FD #-1
+	 *  - among all of them, some might be inherited hence shared and we're
+	 *    not allowed to pause them or whatever, we must just close them.
+	 *  - finally some are not listeners (pipes, logs, stdout, etc) and
+	 *    must be left intact.
+	 *
+	 * The safe way to proceed is to unbind (and close) whatever is not yet
+	 * unbound so that no more receiver/listener remains alive. Then close
+	 * remaining listener FDs, which correspond to zombie listeners (those
+	 * belonging to disabled proxies that were in another process).
+	 * objt_listener() would be cleaner here but not converted yet.
+	 */
+	protocol_unbind_all();
+
+	for (cur_fd = 0; cur_fd < global.maxsock; cur_fd++) {
+		if (!fdtab || !fdtab[cur_fd].owner)
+			continue;
+
+		if (fdtab[cur_fd].iocb == &sock_accept_iocb) {
+			struct listener *l = fdtab[cur_fd].owner;
+
+			BUG_ON(l->state != LI_INIT);
+			unbind_listener(l);
+		}
+	}
+
+	deinit_signals();
+	while (p) {
+		/* build a list of unique uri_auths */
+		if (!ua)
+			ua = p->uri_auth;
+		else {
+			/* check if p->uri_auth is unique */
+			for (uap = ua; uap; uap=uap->next)
+				if (uap == p->uri_auth)
+					break;
+
+			if (!uap && p->uri_auth) {
+				/* add it, if it is */
+				p->uri_auth->next = ua;
+				ua = p->uri_auth;
+			}
+		}
+
+		p0 = p;
+		p = p->next;
+		free_proxy(p0);
+	}/* end while(p) */
+
+	/* destroy all referenced defaults proxies  */
+	proxy_destroy_all_unref_defaults();
+
+	while (ua) {
+		struct stat_scope *scope, *scopep;
+
+		uap = ua;
+		ua = ua->next;
+
+		free(uap->uri_prefix);
+		free(uap->auth_realm);
+		free(uap->node);
+		free(uap->desc);
+
+		userlist_free(uap->userlist);
+		free_act_rules(&uap->http_req_rules);
+
+		scope = uap->scope;
+		while (scope) {
+			scopep = scope;
+			scope = scope->next;
+
+			free(scopep->px_id);
+			free(scopep);
+		}
+
+		free(uap);
+	}
+
+	userlist_free(userlist);
+
+	cfg_unregister_sections();
+
+	deinit_log_buffers();
+
+	list_for_each_entry(pdf, &post_deinit_list, list)
+		pdf->fct();
+
+	ha_free(&global.log_send_hostname);
+	chunk_destroy(&global.log_tag);
+	ha_free(&global.chroot);
+	ha_free(&global.cluster_secret);
+	ha_free(&global.pidfile);
+	ha_free(&global.node);
+	ha_free(&global.desc);
+	ha_free(&oldpids);
+	ha_free(&old_argv);
+	ha_free(&localpeer);
+	ha_free(&global.server_state_base);
+	ha_free(&global.server_state_file);
+	task_destroy(idle_conn_task);
+	idle_conn_task = NULL;
+
+	list_for_each_entry_safe(log, logb, &global.logsrvs, list) {
+		LIST_DEL_INIT(&log->list);
+		free_logsrv(log);
+	}
+
+	list_for_each_entry_safe(wl, wlb, &cfg_cfgfiles, list) {
+		free(wl->s);
+		LIST_DELETE(&wl->list);
+		free(wl);
+	}
+
+	list_for_each_entry_safe(bol, bolb, &build_opts_list, list) {
+		if (bol->must_free)
+			free((void *)bol->str);
+		LIST_DELETE(&bol->list);
+		free(bol);
+	}
+
+	list_for_each_entry_safe(pxdf, pxdfb, &proxy_deinit_list, list) {
+		LIST_DELETE(&pxdf->list);
+		free(pxdf);
+	}
+
+	list_for_each_entry_safe(pdf, pdfb, &post_deinit_list, list) {
+		LIST_DELETE(&pdf->list);
+		free(pdf);
+	}
+
+	list_for_each_entry_safe(srvdf, srvdfb, &server_deinit_list, list) {
+		LIST_DELETE(&srvdf->list);
+		free(srvdf);
+	}
+
+	list_for_each_entry_safe(pcf, pcfb, &post_check_list, list) {
+		LIST_DELETE(&pcf->list);
+		free(pcf);
+	}
+
+	list_for_each_entry_safe(pscf, pscfb, &post_server_check_list, list) {
+		LIST_DELETE(&pscf->list);
+		free(pscf);
+	}
+
+	list_for_each_entry_safe(ppcf, ppcfb, &post_proxy_check_list, list) {
+		LIST_DELETE(&ppcf->list);
+		free(ppcf);
+	}
+
+	list_for_each_entry_safe(prcf, prcfb, &pre_check_list, list) {
+		LIST_DELETE(&prcf->list);
+		free(prcf);
+	}
+
+	list_for_each_entry_safe(tif, tifb, &per_thread_init_list, list) {
+		LIST_DELETE(&tif->list);
+		free(tif);
+	}
+
+	list_for_each_entry_safe(tdf, tdfb, &per_thread_deinit_list, list) {
+		LIST_DELETE(&tdf->list);
+		free(tdf);
+	}
+
+	list_for_each_entry_safe(taf, tafb, &per_thread_alloc_list, list) {
+		LIST_DELETE(&taf->list);
+		free(taf);
+	}
+
+	list_for_each_entry_safe(tff, tffb, &per_thread_free_list, list) {
+		LIST_DELETE(&tff->list);
+		free(tff);
+	}
+
+	list_for_each_entry_safe(pprs, pprsb, &postparsers, list) {
+		LIST_DELETE(&pprs->list);
+		free(pprs);
+	}
+
+	vars_prune(&proc_vars, NULL, NULL);
+	pool_destroy_all();
+	deinit_pollers();
+} /* end deinit() */
+
+__attribute__((noreturn)) void deinit_and_exit(int status)
+{
+	global.mode |= MODE_STOPPING;
+	deinit();
+	exit(status);
+}
+
+/* Runs the polling loop */
+void run_poll_loop()
+{
+	int next, wake;
+
+	clock_update_date(0,1);
+	while (1) {
+		wake_expired_tasks();
+
+		/* check if we caught some signals and process them in the
+		 first thread */
+		if (signal_queue_len && tid == 0) {
+			activity[tid].wake_signal++;
+			signal_process_queue();
+		}
+
+		/* Process a few tasks */
+		process_runnable_tasks();
+
+		/* also stop  if we failed to cleanly stop all tasks */
+		if (killed > 1)
+			break;
+
+		/* expire immediately if events or signals are pending */
+		wake = 1;
+		if (thread_has_tasks())
+			activity[tid].wake_tasks++;
+		else {
+			_HA_ATOMIC_OR(&sleeping_thread_mask, tid_bit);
+			__ha_barrier_atomic_store();
+			if (thread_has_tasks()) {
+				activity[tid].wake_tasks++;
+				_HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
+			} else if (signal_queue_len) {
+				/* this check is required to avoid
+				 * a race with wakeup on signals using wake_threads() */
+				_HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
+			} else
+				wake = 0;
+		}
+
+		if (!wake) {
+			int i;
+
+			if (stopping) {
+				/* stop muxes before acknowledging stopping */
+				if (!(stopping_thread_mask & tid_bit)) {
+					task_wakeup(mux_stopping_data[tid].task, TASK_WOKEN_OTHER);
+					wake = 1;
+				}
+
+				if (_HA_ATOMIC_OR_FETCH(&stopping_thread_mask, tid_bit) == tid_bit) {
+					/* notify all threads that stopping was just set */
+					for (i = 0; i < global.nbthread; i++)
+						if (((all_threads_mask & ~stopping_thread_mask) >> i) & 1)
+							wake_thread(i);
+				}
+			}
+
+			/* stop when there's nothing left to do */
+			if ((jobs - unstoppable_jobs) == 0 &&
+			    (stopping_thread_mask & all_threads_mask) == all_threads_mask) {
+				/* wake all threads waiting on jobs==0 */
+				for (i = 0; i < global.nbthread; i++)
+					if (((all_threads_mask & ~tid_bit) >> i) & 1)
+						wake_thread(i);
+				break;
+			}
+		}
+
+		/* If we have to sleep, measure how long */
+		next = wake ? TICK_ETERNITY : next_timer_expiry();
+
+		/* The poller will ensure it returns around <next> */
+		cur_poller.poll(&cur_poller, next, wake);
+
+		activity[tid].loops++;
+	}
+}
+
+static void *run_thread_poll_loop(void *data)
+{
+	struct per_thread_alloc_fct  *ptaf;
+	struct per_thread_init_fct   *ptif;
+	struct per_thread_deinit_fct *ptdf;
+	struct per_thread_free_fct   *ptff;
+	static int init_left = 0;
+	__decl_thread(static pthread_mutex_t init_mutex = PTHREAD_MUTEX_INITIALIZER);
+	__decl_thread(static pthread_cond_t  init_cond  = PTHREAD_COND_INITIALIZER);
+
+	ha_set_thread(data);
+	set_thread_cpu_affinity();
+	clock_set_local_source();
+
+	/* Now, initialize one thread init at a time. This is better since
+	 * some init code is a bit tricky and may release global resources
+	 * after reallocating them locally. This will also ensure there is
+	 * no race on file descriptors allocation.
+	 */
+#ifdef USE_THREAD
+	pthread_mutex_lock(&init_mutex);
+#endif
+	/* The first thread must set the number of threads left */
+	if (!init_left)
+		init_left = global.nbthread;
+	init_left--;
+
+	clock_init_thread_date();
+
+	/* per-thread alloc calls performed here are not allowed to snoop on
+	 * other threads, so they are free to initialize at their own rhythm
+	 * as long as they act as if they were alone. None of them may rely
+	 * on resources initialized by the other ones.
+	 */
+	list_for_each_entry(ptaf, &per_thread_alloc_list, list) {
+		if (!ptaf->fct()) {
+			ha_alert("failed to allocate resources for thread %u.\n", tid);
+#ifdef USE_THREAD
+			pthread_mutex_unlock(&init_mutex);
+#endif
+			exit(1);
+		}
+	}
+
+	/* per-thread init calls performed here are not allowed to snoop on
+	 * other threads, so they are free to initialize at their own rhythm
+	 * as long as they act as if they were alone.
+	 */
+	list_for_each_entry(ptif, &per_thread_init_list, list) {
+		if (!ptif->fct()) {
+			ha_alert("failed to initialize thread %u.\n", tid);
+#ifdef USE_THREAD
+			pthread_mutex_unlock(&init_mutex);
+#endif
+			exit(1);
+		}
+	}
+
+	/* enabling protocols will result in fd_insert() calls to be performed,
+	 * we want all threads to have already allocated their local fd tables
+	 * before doing so, thus only the last thread does it.
+	 */
+	if (init_left == 0)
+		protocol_enable_all();
+
+#ifdef USE_THREAD
+	pthread_cond_broadcast(&init_cond);
+	pthread_mutex_unlock(&init_mutex);
+
+	/* now wait for other threads to finish starting */
+	pthread_mutex_lock(&init_mutex);
+	while (init_left)
+		pthread_cond_wait(&init_cond, &init_mutex);
+	pthread_mutex_unlock(&init_mutex);
+#endif
+
+#if defined(PR_SET_NO_NEW_PRIVS) && defined(USE_PRCTL)
+	/* Let's refrain from using setuid executables. This way the impact of
+	 * an eventual vulnerability in a library remains limited. It may
+	 * impact external checks but who cares about them anyway ? In the
+	 * worst case it's possible to disable the option. Obviously we do this
+	 * in workers only. We can't hard-fail on this one as it really is
+	 * implementation dependent though we're interested in feedback, hence
+	 * the warning.
+	 */
+	if (!(global.tune.options & GTUNE_INSECURE_SETUID) && !master) {
+		static int warn_fail;
+		if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1 && !_HA_ATOMIC_FETCH_ADD(&warn_fail, 1)) {
+			ha_warning("Failed to disable setuid, please report to developers with detailed "
+				   "information about your operating system. You can silence this warning "
+				   "by adding 'insecure-setuid-wanted' in the 'global' section.\n");
+		}
+	}
+#endif
+
+#if defined(RLIMIT_NPROC)
+	/* all threads have started, it's now time to prevent any new thread
+	 * or process from starting. Obviously we do this in workers only. We
+	 * can't hard-fail on this one as it really is implementation dependent
+	 * though we're interested in feedback, hence the warning.
+	 */
+	if (!(global.tune.options & GTUNE_INSECURE_FORK) && !master) {
+		struct rlimit limit = { .rlim_cur = 0, .rlim_max = 0 };
+		static int warn_fail;
+
+		if (setrlimit(RLIMIT_NPROC, &limit) == -1 && !_HA_ATOMIC_FETCH_ADD(&warn_fail, 1)) {
+			ha_warning("Failed to disable forks, please report to developers with detailed "
+				   "information about your operating system. You can silence this warning "
+				   "by adding 'insecure-fork-wanted' in the 'global' section.\n");
+		}
+	}
+#endif
+	run_poll_loop();
+
+	list_for_each_entry(ptdf, &per_thread_deinit_list, list)
+		ptdf->fct();
+
+	list_for_each_entry(ptff, &per_thread_free_list, list)
+		ptff->fct();
+
+#ifdef USE_THREAD
+	_HA_ATOMIC_AND(&all_threads_mask, ~tid_bit);
+	if (tid > 0)
+		pthread_exit(NULL);
+#endif
+	return NULL;
+}
+
+/* set uid/gid depending on global settings */
+static void set_identity(const char *program_name)
+{
+	if (global.gid) {
+		if (getgroups(0, NULL) > 0 && setgroups(0, NULL) == -1)
+			ha_warning("[%s.main()] Failed to drop supplementary groups. Using 'gid'/'group'"
+				   " without 'uid'/'user' is generally useless.\n", program_name);
+
+		if (setgid(global.gid) == -1) {
+			ha_alert("[%s.main()] Cannot set gid %d.\n", program_name, global.gid);
+			protocol_unbind_all();
+			exit(1);
+		}
+	}
+
+	if (global.uid && setuid(global.uid) == -1) {
+		ha_alert("[%s.main()] Cannot set uid %d.\n", program_name, global.uid);
+		protocol_unbind_all();
+		exit(1);
+	}
+}
+
+int main(int argc, char **argv)
+{
+	int err, retry;
+	struct rlimit limit;
+	int pidfd = -1;
+	int intovf = (unsigned char)argc + 1; /* let the compiler know it's strictly positive */
+
+	/* Catch broken toolchains */
+	if (sizeof(long) != sizeof(void *) || (intovf + 0x7FFFFFFF >= intovf)) {
+		const char *msg;
+
+		if (sizeof(long) != sizeof(void *))
+			/* Apparently MingW64 was not made for us and can also break openssl */
+			msg = "The compiler this program was built with uses unsupported integral type sizes.\n"
+			      "Most likely it follows the unsupported LLP64 model. Never try to link HAProxy\n"
+			      "against libraries built with that compiler either! Please only use a compiler\n"
+			      "producing ILP32 or LP64 programs for both programs and libraries.\n";
+		else if (intovf + 0x7FFFFFFF >= intovf)
+			/* Catch forced CFLAGS that miss 2-complement integer overflow */
+			msg = "The source code was miscompiled by the compiler, which usually indicates that\n"
+			      "some of the CFLAGS needed to work around overzealous compiler optimizations\n"
+			      "were overwritten at build time. Please do not force CFLAGS, and read Makefile\n"
+			      "and INSTALL files to decide on the best way to pass your local build options.\n";
+		else
+			msg = "Bug in the compiler bug detection code, please report it to developers!\n";
+
+		fprintf(stderr,
+		        "FATAL ERROR: invalid code detected -- cannot go further, please recompile!\n"
+		        "%s"
+			"\nBuild options :"
+#ifdef BUILD_TARGET
+		        "\n  TARGET  = " BUILD_TARGET
+#endif
+#ifdef BUILD_CPU
+		        "\n  CPU     = " BUILD_CPU
+#endif
+#ifdef BUILD_CC
+		        "\n  CC      = " BUILD_CC
+#endif
+#ifdef BUILD_CFLAGS
+		        "\n  CFLAGS  = " BUILD_CFLAGS
+#endif
+#ifdef BUILD_OPTIONS
+		        "\n  OPTIONS = " BUILD_OPTIONS
+#endif
+#ifdef BUILD_DEBUG
+		        "\n  DEBUG   = " BUILD_DEBUG
+#endif
+		        "\n\n", msg);
+
+		return 1;
+	}
+
+	setvbuf(stdout, NULL, _IONBF, 0);
+
+	/* take a copy of initial limits before we possibly change them */
+	getrlimit(RLIMIT_NOFILE, &limit);
+
+	if (limit.rlim_max == RLIM_INFINITY)
+		limit.rlim_max = limit.rlim_cur;
+	rlim_fd_cur_at_boot = limit.rlim_cur;
+	rlim_fd_max_at_boot = limit.rlim_max;
+
+	/* process all initcalls in order of potential dependency */
+	RUN_INITCALLS(STG_PREPARE);
+	RUN_INITCALLS(STG_LOCK);
+	RUN_INITCALLS(STG_REGISTER);
+
+	/* now's time to initialize early boot variables */
+	init_early(argc, argv);
+
+	/* handles argument parsing */
+	init_args(argc, argv);
+
+	RUN_INITCALLS(STG_ALLOC);
+	RUN_INITCALLS(STG_POOL);
+	RUN_INITCALLS(STG_INIT);
+
+	/* this is the late init where the config is parsed */
+	init(argc, argv);
+
+	signal_register_fct(SIGQUIT, dump, SIGQUIT);
+	signal_register_fct(SIGUSR1, sig_soft_stop, SIGUSR1);
+	signal_register_fct(SIGHUP, sig_dump_state, SIGHUP);
+	signal_register_fct(SIGUSR2, NULL, 0);
+
+	/* Always catch SIGPIPE even on platforms which define MSG_NOSIGNAL.
+	 * Some recent FreeBSD setups report broken pipes, and MSG_NOSIGNAL
+	 * was defined there, so let's stay on the safe side.
+	 */
+	signal_register_fct(SIGPIPE, NULL, 0);
+
+	/* ulimits */
+	if (!global.rlimit_nofile)
+		global.rlimit_nofile = global.maxsock;
+
+	if (global.rlimit_nofile) {
+		limit.rlim_cur = global.rlimit_nofile;
+		limit.rlim_max = MAX(rlim_fd_max_at_boot, limit.rlim_cur);
+
+		if ((global.fd_hard_limit && limit.rlim_cur > global.fd_hard_limit) ||
+		    raise_rlim_nofile(NULL, &limit) != 0) {
+			getrlimit(RLIMIT_NOFILE, &limit);
+			if (global.fd_hard_limit && limit.rlim_cur > global.fd_hard_limit)
+				limit.rlim_cur = global.fd_hard_limit;
+
+			if (global.tune.options & GTUNE_STRICT_LIMITS) {
+				ha_alert("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
+					 argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
+				exit(1);
+			}
+			else {
+				/* try to set it to the max possible at least */
+				limit.rlim_cur = limit.rlim_max;
+				if (global.fd_hard_limit && limit.rlim_cur > global.fd_hard_limit)
+					limit.rlim_cur = global.fd_hard_limit;
+
+				if (raise_rlim_nofile(&limit, &limit) == 0)
+					getrlimit(RLIMIT_NOFILE, &limit);
+
+				ha_warning("[%s.main()] Cannot raise FD limit to %d, limit is %d.\n",
+					   argv[0], global.rlimit_nofile, (int)limit.rlim_cur);
+				global.rlimit_nofile = limit.rlim_cur;
+			}
+		}
+	}
+
+	if (global.rlimit_memmax) {
+		limit.rlim_cur = limit.rlim_max =
+			global.rlimit_memmax * 1048576ULL;
+#ifdef RLIMIT_AS
+		if (setrlimit(RLIMIT_AS, &limit) == -1) {
+			if (global.tune.options & GTUNE_STRICT_LIMITS) {
+				ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
+					 argv[0], global.rlimit_memmax);
+				exit(1);
+			}
+			else
+				ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
+					   argv[0], global.rlimit_memmax);
+		}
+#else
+		if (setrlimit(RLIMIT_DATA, &limit) == -1) {
+			if (global.tune.options & GTUNE_STRICT_LIMITS) {
+				ha_alert("[%s.main()] Cannot fix MEM limit to %d megs.\n",
+					 argv[0], global.rlimit_memmax);
+				exit(1);
+			}
+			else
+				ha_warning("[%s.main()] Cannot fix MEM limit to %d megs.\n",
+					   argv[0], global.rlimit_memmax);
+		}
+#endif
+	}
+
+	/* Try to get the listeners FD from the previous process using
+	 * _getsocks on the stat socket, it must never been done in wait mode
+	 * and check mode
+	 */
+	if (old_unixsocket &&
+	    !(global.mode & (MODE_MWORKER_WAIT|MODE_CHECK|MODE_CHECK_CONDITION))) {
+		if (strcmp("/dev/null", old_unixsocket) != 0) {
+			if (sock_get_old_sockets(old_unixsocket) != 0) {
+				ha_alert("Failed to get the sockets from the old process!\n");
+				if (!(global.mode & MODE_MWORKER))
+					exit(1);
+			}
+		}
+	}
+
+	/* We will loop at most 100 times with 10 ms delay each time.
+	 * That's at most 1 second. We only send a signal to old pids
+	 * if we cannot grab at least one port.
+	 */
+	retry = MAX_START_RETRIES;
+	err = ERR_NONE;
+	while (retry >= 0) {
+		struct timeval w;
+		err = protocol_bind_all(retry == 0 || nb_oldpids == 0);
+		/* exit the loop on no error or fatal error */
+		if ((err & (ERR_RETRYABLE|ERR_FATAL)) != ERR_RETRYABLE)
+			break;
+		if (nb_oldpids == 0 || retry == 0)
+			break;
+
+		/* FIXME-20060514: Solaris and OpenBSD do not support shutdown() on
+		 * listening sockets. So on those platforms, it would be wiser to
+		 * simply send SIGUSR1, which will not be undoable.
+		 */
+		if (tell_old_pids(SIGTTOU) == 0) {
+			/* no need to wait if we can't contact old pids */
+			retry = 0;
+			continue;
+		}
+		/* give some time to old processes to stop listening */
+		w.tv_sec = 0;
+		w.tv_usec = 10*1000;
+		select(0, NULL, NULL, NULL, &w);
+		retry--;
+	}
+
+	/* Note: protocol_bind_all() sends an alert when it fails. */
+	if ((err & ~ERR_WARN) != ERR_NONE) {
+		ha_alert("[%s.main()] Some protocols failed to start their listeners! Exiting.\n", argv[0]);
+		if (retry != MAX_START_RETRIES && nb_oldpids) {
+			protocol_unbind_all(); /* cleanup everything we can */
+			tell_old_pids(SIGTTIN);
+		}
+		exit(1);
+	}
+
+	if (!(global.mode & MODE_MWORKER_WAIT) && listeners == 0) {
+		ha_alert("[%s.main()] No enabled listener found (check for 'bind' directives) ! Exiting.\n", argv[0]);
+		/* Note: we don't have to send anything to the old pids because we
+		 * never stopped them. */
+		exit(1);
+	}
+
+	/* Ok, all listeners should now be bound, close any leftover sockets
+	 * the previous process gave us, we don't need them anymore
+	 */
+	sock_drop_unused_old_sockets();
+
+	/* prepare pause/play signals */
+	signal_register_fct(SIGTTOU, sig_pause, SIGTTOU);
+	signal_register_fct(SIGTTIN, sig_listen, SIGTTIN);
+
+	/* MODE_QUIET can inhibit alerts and warnings below this line */
+
+	if (getenv("HAPROXY_MWORKER_REEXEC") != NULL) {
+		/* either stdin/out/err are already closed or should stay as they are. */
+		if ((global.mode & MODE_DAEMON)) {
+			/* daemon mode re-executing, stdin/stdout/stderr are already closed so keep quiet */
+			global.mode &= ~MODE_VERBOSE;
+			global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
+		}
+	} else {
+		if ((global.mode & MODE_QUIET) && !(global.mode & MODE_VERBOSE)) {
+			/* detach from the tty */
+			stdio_quiet(-1);
+		}
+	}
+
+	/* open log & pid files before the chroot */
+	if ((global.mode & MODE_DAEMON || global.mode & MODE_MWORKER) &&
+	    !(global.mode & MODE_MWORKER_WAIT) && global.pidfile != NULL) {
+		unlink(global.pidfile);
+		pidfd = open(global.pidfile, O_CREAT | O_WRONLY | O_TRUNC, 0644);
+		if (pidfd < 0) {
+			ha_alert("[%s.main()] Cannot create pidfile %s\n", argv[0], global.pidfile);
+			if (nb_oldpids)
+				tell_old_pids(SIGTTIN);
+			protocol_unbind_all();
+			exit(1);
+		}
+	}
+
+	if ((global.last_checks & LSTCHK_NETADM) && global.uid) {
+		ha_alert("[%s.main()] Some configuration options require full privileges, so global.uid cannot be changed.\n"
+			 "", argv[0]);
+		protocol_unbind_all();
+		exit(1);
+	}
+
+	/* If the user is not root, we'll still let them try the configuration
+	 * but we inform them that unexpected behaviour may occur.
+	 */
+	if ((global.last_checks & LSTCHK_NETADM) && getuid())
+		ha_warning("[%s.main()] Some options which require full privileges"
+			   " might not work well.\n"
+			   "", argv[0]);
+
+	if ((global.mode & (MODE_MWORKER|MODE_DAEMON)) == 0) {
+
+		/* chroot if needed */
+		if (global.chroot != NULL) {
+			if (chroot(global.chroot) == -1 || chdir("/") == -1) {
+				ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
+				if (nb_oldpids)
+					tell_old_pids(SIGTTIN);
+				protocol_unbind_all();
+				exit(1);
+			}
+		}
+	}
+
+	if (nb_oldpids && !(global.mode & MODE_MWORKER_WAIT))
+		nb_oldpids = tell_old_pids(oldpids_sig);
+
+	/* send a SIGTERM to workers who have a too high reloads number  */
+	if ((global.mode & MODE_MWORKER) && !(global.mode & MODE_MWORKER_WAIT))
+		mworker_kill_max_reloads(SIGTERM);
+
+	/* Note that any error at this stage will be fatal because we will not
+	 * be able to restart the old pids.
+	 */
+
+	if ((global.mode & (MODE_MWORKER | MODE_DAEMON)) == 0)
+		set_identity(argv[0]);
+
+	/* check ulimits */
+	limit.rlim_cur = limit.rlim_max = 0;
+	getrlimit(RLIMIT_NOFILE, &limit);
+	if (limit.rlim_cur < global.maxsock) {
+		if (global.tune.options & GTUNE_STRICT_LIMITS) {
+			ha_alert("[%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",
+			         argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
+				 global.maxsock);
+			exit(1);
+		}
+		else
+			ha_alert("[%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",
+			         argv[0], (int)limit.rlim_cur, global.maxconn, global.maxsock,
+				 global.maxsock);
+	}
+
+	if (global.mode & (MODE_DAEMON | MODE_MWORKER | MODE_MWORKER_WAIT)) {
+		int ret = 0;
+		int in_parent = 0;
+		int devnullfd = -1;
+
+		/*
+		 * if daemon + mworker: must fork here to let a master
+		 * process live in background before forking children
+		 */
+
+		if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL)
+		    && (global.mode & MODE_MWORKER)
+		    && (global.mode & MODE_DAEMON)) {
+			ret = fork();
+			if (ret < 0) {
+				ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
+				protocol_unbind_all();
+				exit(1); /* there has been an error */
+			} else if (ret > 0) { /* parent leave to daemonize */
+				exit(0);
+			} else /* change the process group ID in the child (master process) */
+				setsid();
+		}
+
+
+		/* if in master-worker mode, write the PID of the father */
+		if (global.mode & MODE_MWORKER) {
+			char pidstr[100];
+			snprintf(pidstr, sizeof(pidstr), "%d\n", (int)getpid());
+			if (pidfd >= 0)
+				DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
+		}
+
+		/* the father launches the required number of processes */
+		if (!(global.mode & MODE_MWORKER_WAIT)) {
+			if (global.mode & MODE_MWORKER)
+				mworker_ext_launch_all();
+
+			ret = fork();
+			if (ret < 0) {
+				ha_alert("[%s.main()] Cannot fork.\n", argv[0]);
+				protocol_unbind_all();
+				exit(1); /* there has been an error */
+			}
+			else if (ret == 0) { /* child breaks here */
+				/* This one must not be exported, it's internal! */
+				unsetenv("HAPROXY_MWORKER_REEXEC");
+				ha_random_jump96(1);
+			}
+			else { /* parent here */
+				in_parent = 1;
+
+				if (pidfd >= 0 && !(global.mode & MODE_MWORKER)) {
+					char pidstr[100];
+					snprintf(pidstr, sizeof(pidstr), "%d\n", ret);
+					DISGUISE(write(pidfd, pidstr, strlen(pidstr)));
+				}
+				if (global.mode & MODE_MWORKER) {
+					struct mworker_proc *child;
+
+					ha_notice("New worker (%d) forked\n", ret);
+					/* find the right mworker_proc */
+					list_for_each_entry(child, &proc_list, list) {
+						if (child->reloads == 0 &&
+						    child->options & PROC_O_TYPE_WORKER &&
+						    child->pid == -1) {
+							child->timestamp = date.tv_sec;
+							child->pid = ret;
+							child->version = strdup(haproxy_version);
+							break;
+						}
+					}
+				}
+			}
+
+		} else {
+			/* wait mode */
+			in_parent = 1;
+		}
+
+#ifdef USE_CPU_AFFINITY
+		if (!in_parent && ha_cpuset_count(&cpu_map.proc)) {   /* only do this if the process has a CPU map */
+
+#if defined(CPUSET_USE_CPUSET) || defined(__DragonFly__)
+			struct hap_cpuset *set = &cpu_map.proc;
+			sched_setaffinity(0, sizeof(set->cpuset), &set->cpuset);
+#elif defined(__FreeBSD__)
+			struct hap_cpuset *set = &cpu_map.proc;
+			ret = cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(set->cpuset), &set->cpuset);
+#endif
+		}
+#endif
+		/* close the pidfile both in children and father */
+		if (pidfd >= 0) {
+			//lseek(pidfd, 0, SEEK_SET);  /* debug: emulate eglibc bug */
+			close(pidfd);
+		}
+
+		/* We won't ever use this anymore */
+		ha_free(&global.pidfile);
+
+		if (in_parent) {
+			if (global.mode & (MODE_MWORKER|MODE_MWORKER_WAIT)) {
+				master = 1;
+
+				if ((!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
+					(global.mode & MODE_DAEMON)) {
+					/* detach from the tty, this is required to properly daemonize. */
+					if ((getenv("HAPROXY_MWORKER_REEXEC") == NULL))
+						stdio_quiet(-1);
+
+					global.mode &= ~MODE_VERBOSE;
+					global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
+				}
+
+				if (global.mode & MODE_MWORKER_WAIT) {
+					/* only the wait mode handles the master CLI */
+					mworker_loop();
+				} else {
+
+					/* if not in wait mode, reload in wait mode to free the memory */
+					ha_notice("Loading success.\n");
+					proc_self->failedreloads = 0; /* reset the number of failure */
+					mworker_reexec_waitmode();
+				}
+				/* should never get there */
+				exit(EXIT_FAILURE);
+			}
+#if defined(USE_OPENSSL) && !defined(OPENSSL_NO_DH)
+			ssl_free_dh();
+#endif
+			exit(0); /* parent must leave */
+		}
+
+		/* child must never use the atexit function */
+		atexit_flag = 0;
+
+		/* close useless master sockets */
+		if (global.mode & MODE_MWORKER) {
+			struct mworker_proc *child, *it;
+			master = 0;
+
+			mworker_cli_proxy_stop();
+
+			/* free proc struct of other processes  */
+			list_for_each_entry_safe(child, it, &proc_list, list) {
+				/* close the FD of the master side for all
+				 * workers, we don't need to close the worker
+				 * side of other workers since it's done with
+				 * the bind_proc */
+				if (child->ipc_fd[0] >= 0) {
+					close(child->ipc_fd[0]);
+					child->ipc_fd[0] = -1;
+				}
+				if (child->options & PROC_O_TYPE_WORKER &&
+				    child->reloads == 0 &&
+				    child->pid == -1) {
+					/* keep this struct if this is our pid */
+					proc_self = child;
+					continue;
+				}
+				LIST_DELETE(&child->list);
+				mworker_free_child(child);
+				child = NULL;
+			}
+		}
+
+		if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
+			devnullfd = open("/dev/null", O_RDWR, 0);
+			if (devnullfd < 0) {
+				ha_alert("Cannot open /dev/null\n");
+				exit(EXIT_FAILURE);
+			}
+		}
+
+		/* Must chroot and setgid/setuid in the children */
+		/* chroot if needed */
+		if (global.chroot != NULL) {
+			if (chroot(global.chroot) == -1 || chdir("/") == -1) {
+				ha_alert("[%s.main()] Cannot chroot(%s).\n", argv[0], global.chroot);
+				if (nb_oldpids)
+					tell_old_pids(SIGTTIN);
+				protocol_unbind_all();
+				exit(1);
+			}
+		}
+
+		ha_free(&global.chroot);
+		set_identity(argv[0]);
+
+		/* pass through every cli socket, and check if it's bound to
+		 * the current process and if it exposes listeners sockets.
+		 * Caution: the GTUNE_SOCKET_TRANSFER is now set after the fork.
+		 * */
+
+		if (global.cli_fe) {
+			struct bind_conf *bind_conf;
+
+			list_for_each_entry(bind_conf, &global.cli_fe->conf.bind, by_fe) {
+				if (bind_conf->level & ACCESS_FD_LISTENERS) {
+					global.tune.options |= GTUNE_SOCKET_TRANSFER;
+					break;
+				}
+			}
+		}
+
+		/*
+		 * This is only done in daemon mode because we might want the
+		 * logs on stdout in mworker mode. If we're NOT in QUIET mode,
+		 * we should now close the 3 first FDs to ensure that we can
+		 * detach from the TTY. We MUST NOT do it in other cases since
+		 * it would have already be done, and 0-2 would have been
+		 * affected to listening sockets
+		 */
+		if ((global.mode & MODE_DAEMON) &&
+		    (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE))) {
+			/* detach from the tty */
+			stdio_quiet(devnullfd);
+			global.mode &= ~MODE_VERBOSE;
+			global.mode |= MODE_QUIET; /* ensure that we won't say anything from now */
+		}
+		pid = getpid(); /* update child's pid */
+		if (!(global.mode & MODE_MWORKER)) /* in mworker mode we don't want a new pgid for the children */
+			setsid();
+		fork_poller();
+	}
+
+	/* try our best to re-enable core dumps depending on system capabilities.
+	 * What is addressed here :
+	 *   - remove file size limits
+	 *   - remove core size limits
+	 *   - mark the process dumpable again if it lost it due to user/group
+	 */
+	if (global.tune.options & GTUNE_SET_DUMPABLE) {
+		limit.rlim_cur = limit.rlim_max = RLIM_INFINITY;
+
+#if defined(RLIMIT_FSIZE)
+		if (setrlimit(RLIMIT_FSIZE, &limit) == -1) {
+			if (global.tune.options & GTUNE_STRICT_LIMITS) {
+				ha_alert("[%s.main()] Failed to set the raise the maximum "
+					 "file size.\n", argv[0]);
+				exit(1);
+			}
+			else
+				ha_warning("[%s.main()] Failed to set the raise the maximum "
+					   "file size.\n", argv[0]);
+		}
+#endif
+
+#if defined(RLIMIT_CORE)
+		if (setrlimit(RLIMIT_CORE, &limit) == -1) {
+			if (global.tune.options & GTUNE_STRICT_LIMITS) {
+				ha_alert("[%s.main()] Failed to set the raise the core "
+					 "dump size.\n", argv[0]);
+				exit(1);
+			}
+			else
+				ha_warning("[%s.main()] Failed to set the raise the core "
+					   "dump size.\n", argv[0]);
+		}
+#endif
+
+#if defined(USE_PRCTL)
+		if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1)
+			ha_warning("[%s.main()] Failed to set the dumpable flag, "
+				   "no core will be dumped.\n", argv[0]);
+#elif defined(USE_PROCCTL)
+		{
+			int traceable = PROC_TRACE_CTL_ENABLE;
+			if (procctl(P_PID, getpid(), PROC_TRACE_CTL, &traceable) == -1)
+				ha_warning("[%s.main()] Failed to set the traceable flag, "
+					   "no core will be dumped.\n", argv[0]);
+		}
+#endif
+	}
+
+	global.mode &= ~MODE_STARTING;
+	reset_usermsgs_ctx();
+
+	/* start threads 2 and above */
+	setup_extra_threads(&run_thread_poll_loop);
+
+	/* when multithreading we need to let only the thread 0 handle the signals */
+	haproxy_unblock_signals();
+
+	/* Finally, start the poll loop for the first thread */
+	run_thread_poll_loop(&ha_thread_info[0]);
+
+	/* wait for all threads to terminate */
+	wait_for_threads_completion();
+
+	deinit_and_exit(0);
+}
+
+/*
+ * Local variables:
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ * End:
+ */