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-rw-r--r--src/haproxy.c3674
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diff --git a/src/haproxy.c b/src/haproxy.c
new file mode 100644
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--- /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:
+ */