--- /dev/null
+diff -ruN httpd-2.0.47/server/mpm/config.m4 httpd-2.0.47-metuxmpm/server/mpm/config.m4
+--- httpd-2.0.47/server/mpm/config.m4 2003-03-11 13:07:52.000000000 +0600
++++ httpd-2.0.47-metuxmpm/server/mpm/config.m4 2003-08-13 23:33:23.000000000 +0600
+@@ -1,7 +1,7 @@
+ AC_MSG_CHECKING(which MPM to use)
+ AC_ARG_WITH(mpm,
+ APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use.
+- MPM={beos|worker|prefork|mpmt_os2|perchild|leader|threadpool}),[
++ MPM={beos|worker|prefork|mpmt_os2|perchild|leader|threadpool|metuxmpm}),[
+ APACHE_MPM=$withval
+ ],[
+ if test "x$APACHE_MPM" = "x"; then
+@@ -12,7 +12,7 @@
+
+ apache_cv_mpm=$APACHE_MPM
+
+-if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "perchild" -o "$apache_cv_mpm" = "leader" -o "$apache_cv_mpm" = "threadpool" ; then
++if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "perchild" -o "$apache_cv_mpm" = "metuxmpm" -o "$apache_cv_mpm" = "leader" -o "$apache_cv_mpm" = "threadpool" ; then
+ APR_CHECK_APR_DEFINE(APR_HAS_THREADS)
+
+ if test "x$ac_cv_define_APR_HAS_THREADS" = "xno"; then
+@@ -26,7 +26,7 @@
+ APACHE_FAST_OUTPUT(server/mpm/Makefile)
+
+ MPM_NAME=$apache_cv_mpm
+-if test "$MPM_NAME" = "leader" -o "$MPM_NAME" = "threadpool" -o "$MPM_NAME" = "perchild"; then
++if test "$MPM_NAME" = "leader" -o "$MPM_NAME" = "threadpool" -o "$MPM_NAME" = "perchild" -o "$MPM_NAME" = "metuxmpm"; then
+ AC_MSG_WARN(You have selected an EXPERIMENTAL MPM. Be warned!)
+ MPM_SUBDIR_NAME=experimental/$MPM_NAME
+ else
+diff -ruN httpd-2.0.47/server/mpm/experimental/metuxmpm/config5.m4 httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/config5.m4
+--- httpd-2.0.47/server/mpm/experimental/metuxmpm/config5.m4 1970-01-01 06:00:00.000000000 +0600
++++ httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/config5.m4 2003-08-13 23:33:23.000000000 +0600
+@@ -0,0 +1,6 @@
++dnl ## XXX - Need a more thorough check of the proper flags to use
++
++if test "$MPM_NAME" = "metuxmpm" ; then
++ AC_CHECK_FUNCS(pthread_kill)
++ APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile)
++fi
+diff -ruN httpd-2.0.47/server/mpm/experimental/metuxmpm/Makefile.in httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/Makefile.in
+--- httpd-2.0.47/server/mpm/experimental/metuxmpm/Makefile.in 1970-01-01 06:00:00.000000000 +0600
++++ httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/Makefile.in 2003-08-13 23:33:23.000000000 +0600
+@@ -0,0 +1,5 @@
++
++LTLIBRARY_NAME = libmetuxmpm.la
++LTLIBRARY_SOURCES = metuxmpm.c
++
++include $(top_srcdir)/build/ltlib.mk
+diff -ruN httpd-2.0.47/server/mpm/experimental/metuxmpm/metuxmpm.c httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/metuxmpm.c
+--- httpd-2.0.47/server/mpm/experimental/metuxmpm/metuxmpm.c 1970-01-01 06:00:00.000000000 +0600
++++ httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/metuxmpm.c 2003-08-14 01:58:10.000000000 +0600
+@@ -0,0 +1,2574 @@
++/* ====================================================================
++ * The Apache Software License, Version 1.1
++ *
++ * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
++ * reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ *
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ *
++ * 3. The end-user documentation included with the redistribution,
++ * if any, must include the following acknowledgment:
++ * "This product includes software developed by the
++ * Apache Software Foundation (http://www.apache.org/)."
++ * Alternately, this acknowledgment may appear in the software itself,
++ * if and wherever such third-party acknowledgments normally appear.
++ *
++ * 4. The names "Apache" and "Apache Software Foundation" must
++ * not be used to endorse or promote products derived from this
++ * software without prior written permission. For written
++ * permission, please contact apache@apache.org.
++ *
++ * 5. Products derived from this software may not be called "Apache",
++ * nor may "Apache" appear in their name, without prior written
++ * permission of the Apache Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
++ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ * ====================================================================
++ *
++ * This software consists of voluntary contributions made by many
++ * individuals on behalf of the Apache Software Foundation. For more
++ * information on the Apache Software Foundation, please see
++ * <http://www.apache.org/>.
++ *
++ * Portions of this software are based upon public domain software
++ * originally written at the National Center for Supercomputing Applications,
++ * University of Illinois, Urbana-Champaign.
++ */
++
++/* TODO:
++ + replace pipe_of_death by an generic command interface
++ + also use this interface for child->child communications
++ + add support for runtime configuration over this if.
++ + what to do w/ unassigned vhosts ? who should handle them ?
++ perhaps we shoudda add an DefaultProcessor option ?
++ + test, test, test, and test, especially under high load.
++ + what about persistent links w/ changing vhost ?
++ should the client then give it back to the multiplexer ?
++ + add timeouts in multiplexer to prevent local dos attacks
++ + think about possible vulnarabilities. note that the vhost's user
++ could ptrace the processor child and play nice games with it.
++*/
++
++/* -- build configuration -- manly for debugging -- */
++
++/* #define MPM_METUXMPM_DEBUG */
++
++#define MPM_THREAD_ACCEPT_LOCK
++
++#include "apr_hash.h"
++#include "apr_strings.h"
++#include "apr_pools.h"
++#include "apr_portable.h"
++#include "apr_file_io.h"
++#include "apr_signal.h"
++
++#define APR_WANT_IOVEC
++#include "apr_want.h"
++
++#if APR_HAVE_UNISTD_H
++#include <unistd.h>
++#endif
++#if APR_HAVE_SYS_SOCKET_H
++#include <sys/socket.h>
++#endif
++
++#if !APR_HAS_THREADS
++#error The metuxmpm MPM requires APR threads, but they are unavailable.
++#endif
++
++#define CORE_PRIVATE
++
++#include "ap_config.h"
++#include "httpd.h"
++#include "http_main.h"
++#include "http_log.h"
++#include "http_config.h" /* for read_config */
++#include "http_core.h" /* for get_remote_host */
++#include "http_protocol.h"
++#include "http_connection.h"
++#include "ap_mpm.h"
++#include "unixd.h"
++#include "mpm_common.h"
++#include "ap_listen.h"
++#include "mpm_default.h"
++#include "mpm.h"
++#include "scoreboard.h"
++#include "util_filter.h"
++#include "apr_poll.h"
++
++#include "util_ebcdic.h"
++
++#ifdef HAVE_POLL_H
++#include <poll.h>
++#endif
++#ifdef HAVE_SYS_POLL_H
++#include <sys/poll.h>
++#endif
++
++/* ### should be APR-ized */
++#include <grp.h>
++#include <pwd.h>
++#include <sys/stat.h>
++#include <sys/un.h>
++#include <setjmp.h>
++#ifdef HAVE_SYS_PROCESSOR_H
++#include <sys/processor.h> /* for bindprocessor() */
++#endif
++
++#ifdef MPM_METUXMPM_DEBUG
++# define _DBG(text,par...) \
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, \
++ "(metuxmpm: pid=%d uid=%d) %s(): " text, \
++ getpid(), getuid(), __FUNCTION__, ##par, 0)
++
++# define _TRACE_CALL(text,par...) _DBG("calling " text, ##par)
++# define _TRACE_RET(text,par...) _DBG("returned from " text, ##par)
++#else
++# define _DBG(par...)
++# define _TRACE_RET(par...)
++# define _TRACE_CALL(par...)
++#endif /* MPM_METUXMPM_DEBUG */
++
++/* char of death - for signalling children to die */
++#define AP_metuxmpm_CHAR_OF_DEATH '!'
++
++#define metuxmpm_SERVER_CONF(cf) \
++ ((metuxmpm_server_conf *) ap_get_module_config(cf,&mpm_metuxmpm_module))
++
++
++/*
++ * Define some magic numbers that we use for the state of the incomming
++ * request. These must be < 0 so they don't collide with a file descriptor.
++ */
++#define AP_metuxmpm_THISCHILD -1
++#define AP_metuxmpm_OTHERCHILD -2
++
++/* Limit on the threads per process. Clients will be locked out if more than
++ * this * server_limit are needed.
++ *
++ * We keep this for one reason it keeps the size of the scoreboard file small
++ * enough that we can read the whole thing without worrying too much about
++ * the overhead.
++ */
++#ifndef DEFAULT_THREAD_LIMIT
++#define DEFAULT_THREAD_LIMIT 64
++#endif
++
++/* Admin can't tune ThreadLimit beyond MAX_THREAD_LIMIT. We want
++ * some sort of compile-time limit to help catch typos.
++ */
++#ifndef MAX_THREAD_LIMIT
++#define MAX_THREAD_LIMIT 20000
++#endif
++
++/* Limit on the total --- clients will be locked out if more servers than
++ * this are needed. It is intended solely to keep the server from crashing
++ * when things get out of hand.
++ *
++ * We keep a hard maximum number of servers, for two reasons --- first off,
++ * in case something goes seriously wrong, we want to stop the fork bomb
++ * short of actually crashing the machine we're running on by filling some
++ * kernel table. Secondly, it keeps the size of the scoreboard file small
++ * enough that we can read the whole thing without worrying too much about
++ * the overhead.
++ */
++#ifndef DEFAULT_SERVER_LIMIT
++#define DEFAULT_SERVER_LIMIT 8
++#endif
++
++/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT. We want
++ * some sort of compile-time limit to help catch typos.
++ */
++#ifndef MAX_SERVER_LIMIT
++#define MAX_SERVER_LIMIT 20000
++#endif
++
++/*
++ * Actual definitions of config globals
++ */
++
++static int threads_to_start = 0; /* Worker threads per child */
++static int min_spare_threads = 0;
++static int max_spare_threads = 0;
++static int max_threads = 0;
++static int server_limit = DEFAULT_SERVER_LIMIT;
++static int first_server_limit;
++static int thread_limit = DEFAULT_THREAD_LIMIT;
++static int first_thread_limit;
++static int changed_limit_at_restart;
++static int num_childs = 0;
++static int workers_may_exit = 0;
++static int requests_this_child;
++static int num_listensocks = 0;
++static ap_pod_t *pod;
++static jmp_buf jmpbuffer;
++static int thread_overflow_reported = 0;
++
++
++/* === configuration stuff === */
++/* the server limit is also the size of the server table */
++static int cf_server_limit = DEFAULT_SERVER_LIMIT;
++
++/* -- server process information -- */
++typedef struct
++{
++ uid_t uid;
++ gid_t gid;
++ int input; /* The socket descriptor */
++ int output; /* The socket descriptor */
++ int type;
++ int id; /* index in child_info_table */
++} child_info_t;
++
++#define CHILD_TYPE_MULTIPLEXER 1
++#define CHILD_TYPE_PROCESSOR 2
++
++typedef struct
++{
++ const char *sockname; /* The base name for the socket */
++ const char *fullsockname; /* socket base name + extension */
++ child_info_t* child; /* The client which processes this server */
++} metuxmpm_server_conf;
++
++typedef struct
++{
++ int sock_fd;
++ int status;
++ jmp_buf jmpbuffer;
++} thread_info_t;
++
++/* Tables used to determine the user and group each child process should
++ * run as. The hash table is used to correlate a server name with a child
++ * process.
++ */
++static int child_info_table_size;
++static child_info_t *child_info_table;
++static thread_info_t *thread_info_table;
++struct ap_ctable *ap_child_table;
++
++/*
++ * The max child slot ever assigned, preserved across restarts. Necessary
++ * to deal with NumServers changes across AP_SIG_GRACEFUL restarts. We
++ * use this value to optimize routines that have to scan the entire child
++ * table.
++ *
++ * XXX - It might not be worth keeping this code in. There aren't very
++ * many child processes in this MPM.
++ */
++int ap_max_daemons_limit = -1;
++int ap_threads_per_child; /* XXX not part of API! axe it! */
++
++module AP_MODULE_DECLARE_DATA mpm_metuxmpm_module;
++
++/* -- replace the pipe-of-death by an control socket -- */
++static apr_file_t *pipe_of_death_in = NULL;
++static apr_file_t *pipe_of_death_out = NULL;
++static apr_thread_mutex_t *pipe_of_death_mutex;
++
++/* *Non*-shared http_main globals... */
++
++server_rec *ap_server_conf;
++
++/* one_process --- debugging mode variable; can be set from the command line
++ * with the -X flag. If set, this gets you the child_main loop running
++ * in the process which originally started up (no detach, no make_child),
++ * which is a pretty nice debugging environment. (You'll get a SIGHUP
++ * early in standalone_main; just continue through. This is the server
++ * trying to kill off any child processes which it might have lying
++ * around --- Apache doesn't keep track of their pids, it just sends
++ * SIGHUP to the process group, ignoring it in the root process.
++ * Continue through and you'll be fine.).
++ */
++
++static int one_process = 0;
++
++#ifdef DEBUG_SIGSTOP
++int raise_sigstop_flags;
++#endif
++
++static apr_pool_t *pconf; /* Pool for config stuff */
++static apr_pool_t *pchild; /* Pool for httpd child stuff */
++static apr_pool_t *thread_pool_parent; /* Parent of per-thread pools */
++static apr_thread_mutex_t *thread_pool_parent_mutex;
++
++static int child_num;
++static unsigned int my_pid; /* Linux getpid() doesn't work except in
++ main thread. Use this instead */
++
++/* -- stack w/ free thread slot IDs */
++static int *worker_thread_free_ids;
++static apr_threadattr_t *worker_thread_attr;
++
++/* Keep track of the number of idle worker threads */
++static int idle_thread_count;
++static apr_thread_mutex_t *idle_thread_count_mutex;
++
++/* Locks for accept serialization */
++#ifdef NO_SERIALIZED_ACCEPT
++
++#define ACCEPT_PROC_MUTEX_INIT APR_SUCCESS
++#define ACCEPT_PROC_MUTEX_LOCK APR_SUCCESS
++#define ACCEPT_PROC_MUTEX_UNLOCK APR_SUCCESS
++#define ACCEPT_PROC_MUTEX_CREATE APR_SUCCESS
++
++#else
++
++static apr_proc_mutex_t *process_accept_mutex;
++
++#define ACCEPT_PROC_MUTEX_LOCK (apr_proc_mutex_lock(process_accept_mutex))
++#define ACCEPT_PROC_MUTEX_UNLOCK (apr_proc_mutex_unlock(process_accept_mutex))
++#define ACCEPT_PROC_MUTEX_CREATE (apr_proc_mutex_create(&process_accept_mutex,ap_lock_fname, ap_accept_lock_mech,_pconf))
++#define ACCEPT_PROC_MUTEX_INIT (apr_proc_mutex_child_init(&process_accept_mutex, ap_lock_fname, pchild));
++
++#endif /* NO_SERIALIZED_ACCEPT */
++
++static apr_thread_mutex_t *thread_accept_mutex;
++
++#ifdef MPM_metuxmpm_THREAD_ACCEPT_LOCK
++
++#define THREAD_ACCEPT_LOCK \
++ _DBG("locking thread_accept_mutex"); \
++ apr_thread_mutex_lock(thread_accept_mutex); \
++ _DBG("got thread_accept_mutex locked");
++
++#define THREAD_ACCEPT_UNLOCK \
++ _DBG("unlocking thread_accept_mutex"); \
++ apr_thread_mutex_unlock(thread_accept_mutex); \
++ _DBG("got thread_accept_mutex unlocked");
++#else
++
++#define THREAD_ACCEPT_LOCK \
++ _DBG("omitted locking thread_accept_mutex");
++
++#define THREAD_ACCEPT_UNLOCK \
++ _DBG("omitted unlocking thread_accept_mutex");
++
++#endif
++/* == Keep track of the number of worker threads currently active == */
++static int worker_thread_count = 0;
++static apr_thread_mutex_t *worker_thread_count_mutex;
++
++static inline int worker_thread_count_get ()
++{
++ int x;
++ apr_thread_mutex_lock(worker_thread_count_mutex);
++ x = worker_thread_count;
++ apr_thread_mutex_unlock(worker_thread_count_mutex);
++ _DBG("worker_thread_count=%d", x);
++ return x;
++}
++
++static inline int worker_thread_count_add ( int x )
++{
++ int y;
++ apr_thread_mutex_lock(worker_thread_count_mutex);
++ worker_thread_count += x;
++ y = worker_thread_count;
++ apr_thread_mutex_unlock(worker_thread_count_mutex);
++ _DBG("worker_thread_count=%d (+%d)", y, x);
++ return y;
++}
++
++/* ------------------------------------------------------------------- */
++
++AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
++{
++ switch(query_code){
++ case AP_MPMQ_MAX_DAEMON_USED:
++ *result = ap_max_daemons_limit;
++ return APR_SUCCESS;
++ case AP_MPMQ_IS_THREADED:
++ *result = AP_MPMQ_DYNAMIC;
++ return APR_SUCCESS;
++ case AP_MPMQ_IS_FORKED:
++ *result = AP_MPMQ_STATIC;
++ return APR_SUCCESS;
++ case AP_MPMQ_HARD_LIMIT_DAEMONS:
++ *result = cf_server_limit;
++ return APR_SUCCESS;
++ case AP_MPMQ_HARD_LIMIT_THREADS:
++ *result = thread_limit;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_THREADS:
++ *result = max_threads;
++ return APR_SUCCESS;
++ case AP_MPMQ_MIN_SPARE_DAEMONS:
++ *result = 0;
++ return APR_SUCCESS;
++ case AP_MPMQ_MIN_SPARE_THREADS:
++ *result = min_spare_threads;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_SPARE_DAEMONS:
++ *result = 0;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_SPARE_THREADS:
++ *result = max_spare_threads;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_REQUESTS_DAEMON:
++ *result = ap_max_requests_per_child;
++ return APR_SUCCESS;
++ case AP_MPMQ_MAX_DAEMONS:
++ *result = num_childs;
++ return APR_SUCCESS;
++ }
++ return APR_ENOTIMPL;
++}
++
++/* a clean exit from a child with proper cleanup */
++static inline int clean_child_exit(int code)
++{
++ if (pchild) apr_pool_destroy(pchild);
++ exit(code);
++}
++
++/* handle all varieties of core dumping signals */
++static void sig_coredump(int sig)
++{
++ chdir(ap_coredump_dir);
++ apr_signal(sig, SIG_DFL);
++ kill(getpid(), sig);
++ /* At this point we've got sig blocked, because we're still inside
++ * the signal handler. When we leave the signal handler it will
++ * be unblocked, and we'll take the signal... and coredump or whatever
++ * is appropriate for this particular Unix. In addition the parent
++ * will see the real signal we received -- whereas if we called
++ * abort() here, the parent would only see SIGABRT.
++ */
++}
++
++static void just_die(int sig)
++{
++ clean_child_exit(0);
++}
++
++/*****************************************************************
++ * Connection structures and accounting...
++ */
++
++/* volatile just in case */
++static int volatile shutdown_pending;
++static int volatile restart_pending;
++static int volatile is_graceful;
++static int volatile child_fatal;
++/* we don't currently track ap_my_generation, but mod_status
++ * references it so it must be defined */
++ap_generation_t volatile ap_my_generation=0;
++
++/*
++ * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
++ * functions to initiate shutdown or restart without relying on signals.
++ * Previously this was initiated in sig_term() and restart() signal handlers,
++ * but we want to be able to start a shutdown/restart from other sources --
++ * e.g. on Win32, from the service manager. Now the service manager can
++ * call ap_start_shutdown() or ap_start_restart() as appropiate. Note that
++ * these functions can also be called by the child processes, since global
++ * variables are no longer used to pass on the required action to the parent.
++ *
++ * These should only be called from the parent process itself, since the
++ * parent process will use the shutdown_pending and restart_pending variables
++ * to determine whether to shutdown or restart. The child process should
++ * call signal_parent() directly to tell the parent to die -- this will
++ * cause neither of those variable to be set, which the parent will
++ * assume means something serious is wrong (which it will be, for the
++ * child to force an exit) and so do an exit anyway.
++ */
++
++static void ap_start_shutdown(void)
++{
++ if (shutdown_pending == 1)
++ {
++ /* Um, is this _probably_ not an error, if the user has
++ * tried to do a shutdown twice quickly, so we won't
++ * worry about reporting it.
++ */
++ return;
++ }
++ shutdown_pending = 1;
++}
++
++/* do a graceful restart if graceful == 1 */
++static void ap_start_restart(int graceful)
++{
++ if (restart_pending == 1)
++ {
++ /* Probably not an error - don't bother reporting it */
++ return;
++ }
++ restart_pending = 1;
++ is_graceful = graceful;
++}
++
++static void sig_term(int sig)
++{
++ ap_start_shutdown();
++}
++
++static void restart(int sig)
++{
++ ap_start_restart(sig == AP_SIG_GRACEFUL);
++}
++
++static void set_signals(void)
++{
++#ifndef NO_USE_SIGACTION
++ struct sigaction sa;
++
++ sigemptyset(&sa.sa_mask);
++ sa.sa_flags = 0;
++
++ if (!one_process) {
++ sa.sa_handler = sig_coredump;
++#if defined(SA_ONESHOT)
++ sa.sa_flags = SA_ONESHOT;
++#elif defined(SA_RESETHAND)
++ sa.sa_flags = SA_RESETHAND;
++#endif
++ if (sigaction(SIGSEGV, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGSEGV)");
++#ifdef SIGBUS
++ if (sigaction(SIGBUS, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGBUS)");
++#endif
++#ifdef SIGABORT
++ if (sigaction(SIGABORT, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGABORT)");
++#endif
++#ifdef SIGABRT
++ if (sigaction(SIGABRT, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGABRT)");
++#endif
++#ifdef SIGILL
++ if (sigaction(SIGILL, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGILL)");
++#endif
++ sa.sa_flags = 0;
++ }
++ sa.sa_handler = sig_term;
++ if (sigaction(SIGTERM, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGTERM)");
++#ifdef SIGINT
++ if (sigaction(SIGINT, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGINT)");
++#endif
++#ifdef SIGXCPU
++ sa.sa_handler = SIG_DFL;
++ if (sigaction(SIGXCPU, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGXCPU)");
++#endif
++#ifdef SIGXFSZ
++ sa.sa_handler = SIG_DFL;
++ if (sigaction(SIGXFSZ, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGXFSZ)");
++#endif
++#ifdef SIGPIPE
++ sa.sa_handler = SIG_IGN;
++ if (sigaction(SIGPIPE, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGPIPE)");
++#endif
++
++ /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy
++ * processing one */
++ sigaddset(&sa.sa_mask, SIGHUP);
++ sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
++ sa.sa_handler = restart;
++ if (sigaction(SIGHUP, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(SIGHUP)");
++ if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "sigaction(" AP_SIG_GRACEFUL_STRING ")");
++#else
++ if (!one_process)
++ {
++ apr_signal(SIGSEGV, sig_coredump);
++#ifdef SIGBUS
++ apr_signal(SIGBUS, sig_coredump);
++#endif /* SIGBUS */
++#ifdef SIGABORT
++ apr_signal(SIGABORT, sig_coredump);
++#endif /* SIGABORT */
++#ifdef SIGABRT
++ apr_signal(SIGABRT, sig_coredump);
++#endif /* SIGABRT */
++#ifdef SIGILL
++ apr_signal(SIGILL, sig_coredump);
++#endif /* SIGILL */
++#ifdef SIGXCPU
++ apr_signal(SIGXCPU, SIG_DFL);
++#endif /* SIGXCPU */
++#ifdef SIGXFSZ
++ apr_signal(SIGXFSZ, SIG_DFL);
++#endif /* SIGXFSZ */
++ }
++
++ apr_signal(SIGTERM, sig_term);
++#ifdef SIGHUP
++ apr_signal(SIGHUP, restart);
++#endif /* SIGHUP */
++#ifdef AP_SIG_GRACEFUL
++ apr_signal(AP_SIG_GRACEFUL, restart);
++#endif /* AP_SIG_GRACEFUL */
++#ifdef SIGPIPE
++ apr_signal(SIGPIPE, SIG_IGN);
++#endif /* SIGPIPE */
++
++#endif
++}
++
++/*****************************************************************
++ * Here follows a long bunch of generic server bookkeeping stuff...
++ */
++
++int ap_graceful_stop_signalled(void)
++{
++ /* XXX - Does this really work? - Manoj */
++ return is_graceful;
++}
++
++/*****************************************************************
++ * Child process main loop.
++ */
++
++static void process_socket(apr_pool_t *p, apr_socket_t *sock, long conn_id,
++ apr_bucket_alloc_t *bucket_alloc)
++{
++ conn_rec *current_conn;
++ int sock_fd;
++ apr_status_t rv;
++ int thread_num = conn_id % thread_limit;
++ ap_sb_handle_t *sbh;
++
++ if ((rv = apr_os_sock_get(&sock_fd, sock)) != APR_SUCCESS)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL, "apr_os_sock_get");
++ }
++
++ _DBG("thread_num=%d sock=%ld sock_fd=%d\n", thread_num, sock, sock_fd);
++
++ switch (child_info_table[child_num].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER:
++ _DBG("type=MULTIPLEXER");
++ break;
++ case CHILD_TYPE_PROCESSOR:
++ _DBG("type=PROCESSOR");
++ break;
++ default:
++ _DBG("type UNKNOWN!");
++ }
++
++ if (sock_fd >= FD_SETSIZE)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL,
++ "new file descriptor %d is too large; you probably need "
++ "to rebuild Apache with a larger FD_SETSIZE "
++ "(currently %d)",
++ sock_fd, FD_SETSIZE);
++ apr_socket_close(sock);
++ _DBG("thread_num=%d: exiting with error", thread_num);
++ return;
++ }
++
++ if (thread_info_table[thread_num].sock_fd < 0)
++ {
++ ap_sock_disable_nagle(sock);
++ }
++
++ ap_create_sb_handle(&sbh, p, conn_id / thread_limit, thread_num);
++ _TRACE_CALL("ap_run_create_connection() [thread_num=%d]", thread_num);
++ current_conn = ap_run_create_connection(p, ap_server_conf, sock, conn_id,
++ sbh, bucket_alloc);
++ _TRACE_RET("ap_run_create_connection() [thread_num=%d]", thread_num);
++ if (current_conn)
++ {
++ _TRACE_CALL("ap_process_connection() [thread_num=%d]", thread_num);
++ ap_process_connection(current_conn, sock);
++ _TRACE_RET("ap_process_connection() [thread_num=%d]", thread_num);
++ _TRACE_CALL("ap_lingering_close() [thread_num=%d]", thread_num);
++ ap_lingering_close(current_conn);
++ _TRACE_RET("ap_lingering_close() [thread_num=%d]", thread_num);
++ }
++}
++
++static metuxmpm_process_connection(conn_rec *conn)
++{
++ ap_filter_t *filter;
++ apr_bucket_brigade *bb;
++ core_net_rec *net;
++
++ _DBG("function entered");
++
++ /* -- fetch our sockets from the pool -- */
++ apr_pool_userdata_get((void **)&bb, "metuxmpm_SOCKETS", conn->pool);
++ if (bb != NULL)
++ {
++ /* -- find the 'core' filter and give the socket data to it -- */
++ for (filter = conn->output_filters; filter != NULL; filter = filter->next)
++ {
++ if (!strcmp(filter->frec->name, "core")) break;
++ }
++ if (filter != NULL)
++ {
++ net = filter->ctx;
++ net->in_ctx = apr_palloc(conn->pool, sizeof(*net->in_ctx));
++ net->in_ctx->b = bb;
++ }
++ }
++ _DBG("leaving (DECLINED)", 0);
++ return DECLINED;
++}
++
++
++static void *worker_thread_proc(apr_thread_t *, void *);
++
++/* Starts a thread as long as we're below max_threads */
++static int start_thread(void)
++{
++ apr_thread_t *thread;
++ int rc;
++ int cnt;
++
++ cnt = worker_thread_count_get ();
++
++ _DBG("thread count currently: %d", cnt);
++
++ if (cnt < max_threads - 1)
++ {
++ _TRACE_CALL("apr_thread_create()");
++ rc = apr_thread_create(&thread, worker_thread_attr, worker_thread_proc,
++ &worker_thread_free_ids[worker_thread_count], pchild);
++ _TRACE_RET("apr_thread_create()");
++ if (rc != APR_SUCCESS)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, rc, ap_server_conf,
++ "apr_thread_create: unable to create worker thread");
++ /* In case system resources are maxxed out, we don't want
++ Apache running away with the CPU trying to fork over and
++ over and over again if we exit. */
++ sleep(10);
++ workers_may_exit = 1;
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ return 0;
++ }
++ worker_thread_count_add ( 1 );
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ _DBG("ok");
++ return 1;
++ }
++
++ /* we already have too many threads running */
++ _DBG("too many running threads. aborting");
++ if (!thread_overflow_reported)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, 0,
++ ap_server_conf,
++ "server reached MaxThreadsmetuxmpm setting, "
++ "consider raising the MaxThreadsmetuxmpm or "
++ "NumServers settings");
++ thread_overflow_reported = 1;
++ }
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ return 0;
++}
++
++/* Sets workers_may_exit if we received a character on the pipe_of_death */
++static apr_status_t check_pipe_of_death
++(
++ void **csd,
++ ap_listen_rec *lr,
++ apr_pool_t *ptrans
++)
++{
++ int ret;
++ char pipe_read_char;
++ apr_size_t n = 1;
++
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++
++ if (workers_may_exit) return APR_SUCCESS;
++
++ apr_thread_mutex_lock(pipe_of_death_mutex);
++ ret = apr_recv(lr->sd, &pipe_read_char, &n);
++ if (APR_STATUS_IS_EAGAIN(ret))
++ {
++ /* It lost the lottery. It must continue to suffer
++ * through a life of servitude. */
++ }
++ else
++ {
++ if (pipe_read_char != AP_metuxmpm_CHAR_OF_DEATH)
++ {
++ _DBG("got wrong char %c", pipe_read_char);
++ return APR_SUCCESS;
++ }
++ /* It won the lottery (or something else is very
++ * wrong). Embrace death with open arms. */
++ workers_may_exit = 1;
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ }
++ apr_thread_mutex_unlock(pipe_of_death_mutex);
++ return APR_SUCCESS;
++}
++
++static apr_status_t receive_from_multiplexer
++(
++ void **trans_sock, /* will be filled out w/ the received socket */
++ ap_listen_rec *lr, /* listener to receive from */
++ apr_pool_t *ptrans /* transaction wide pool */
++)
++{
++ struct msghdr msg;
++ struct cmsghdr *cmsg;
++ char headers[HUGE_STRING_LEN];
++ char *bodypart;
++ apr_size_t bodypart_len;
++ struct iovec iov[2];
++ int ret, fd_tmp;
++ apr_os_sock_t ctrl_sock_fd;
++ apr_os_sock_t trans_sock_fd;
++
++ /* -- bucket's, brigades and their allocators */
++ apr_bucket_alloc_t *alloc = apr_bucket_alloc_create(ptrans);
++ apr_bucket_brigade *bb = apr_brigade_create(ptrans, alloc);
++ apr_bucket *bucket;
++
++ /* prepare the buffers for receiving data from remote side */
++ iov[0].iov_base = &bodypart_len;
++ iov[0].iov_len = sizeof(bodypart_len);
++ iov[1].iov_base = headers;
++ iov[1].iov_len = HUGE_STRING_LEN;
++
++ cmsg = apr_palloc(ptrans, sizeof(*cmsg) + sizeof(trans_sock_fd));
++ cmsg->cmsg_len = sizeof(*cmsg) + sizeof(trans_sock_fd);
++
++ msg.msg_name = NULL;
++ msg.msg_namelen = 0;
++ msg.msg_iov = iov;
++ msg.msg_iovlen = 2;
++ msg.msg_control = cmsg;
++ msg.msg_controllen = cmsg->cmsg_len;
++
++ /* -- receive data from socket -- */
++ apr_os_sock_get(&ctrl_sock_fd, lr->sd);
++ _DBG("receiving from sock_fd=%d", ctrl_sock_fd);
++ ret = recvmsg(ctrl_sock_fd, &msg, 0);
++
++ /* -- extract socket from the cmsg -- */
++ memcpy(&trans_sock_fd, CMSG_DATA(cmsg), sizeof(trans_sock_fd));
++ apr_os_sock_put((apr_socket_t **)trans_sock, &trans_sock_fd, ptrans);
++ apr_os_sock_get(&fd_tmp, *trans_sock);
++
++
++ _DBG("trans_sock=%ld fdx=%d sock_fd=%d",
++ *trans_sock, trans_sock_fd, fd_tmp);
++
++ _DBG("headers=\"%s\"", headers);
++
++ /* -- store received data into an brigade and add
++ it to the current transaction's pool -- */
++ bucket = apr_bucket_eos_create(alloc);
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++ bucket = apr_bucket_socket_create(*trans_sock, alloc);
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++
++ /* Receive the bodypart (if there is one) and insert it in the brigade */
++ if (bodypart_len) {
++ _DBG("Receiving the bodypart (bodypart_len=%d)", bodypart_len);
++ bodypart = apr_palloc(ptrans, bodypart_len);
++ ret = recv(ctrl_sock_fd, bodypart, HUGE_STRING_LEN, 0);
++
++ _DBG("bodypart=\"%s\"", bodypart);
++ bucket = apr_bucket_heap_create(bodypart,
++ bodypart_len, NULL, alloc);
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++ } else {
++ _DBG("There is no bodypart");
++ }
++
++ bucket = apr_bucket_heap_create(headers,
++ strlen(headers), NULL, alloc);
++ /* DS: I really don't like that strlen here */
++
++ APR_BRIGADE_INSERT_HEAD(bb, bucket);
++
++ apr_pool_userdata_set(bb, "metuxmpm_SOCKETS", NULL, ptrans);
++ _DBG("returning 0");
++ return 0;
++}
++
++/* idle_thread_count should be incremented before starting a worker_thread */
++
++static void *worker_thread_proc(apr_thread_t *thd, void *arg)
++{
++ apr_socket_t *sock;
++ apr_pool_t *tpool; /* Pool for this thread */
++ apr_pool_t *ptrans; /* Pool for per-transaction stuff */
++ int srv;
++ int thread_num = *((int *) arg);
++ long conn_id = child_num * thread_limit + thread_num;
++ apr_pollfd_t *pollset;
++ apr_status_t rv;
++ ap_listen_rec *lr_walk;
++ int n;
++ int thread_cnt;
++ apr_bucket_alloc_t *bucket_alloc;
++
++ _DBG("function starting");
++
++ /* === allocate thread pools etc === */
++ apr_thread_mutex_lock(thread_pool_parent_mutex);
++ apr_pool_create(&tpool, thread_pool_parent);
++ apr_thread_mutex_unlock(thread_pool_parent_mutex);
++ apr_pool_create(&ptrans, tpool);
++
++ (void) ap_update_child_status_from_indexes(child_num, thread_num,
++ SERVER_STARTING,
++ (request_rec *) NULL);
++
++ bucket_alloc = apr_bucket_alloc_create(apr_thread_pool_get(thd));
++
++ apr_thread_mutex_lock(idle_thread_count_mutex);
++ if (idle_thread_count < max_spare_threads)
++ {
++ idle_thread_count++;
++ _DBG("idle_thread_count: %d", idle_thread_count);
++ apr_thread_mutex_unlock(idle_thread_count_mutex);
++ }
++ else
++ {
++ _DBG("too many idle threads: %d (max %d)", idle_thread_count, max_spare_threads );
++ apr_thread_mutex_unlock(idle_thread_count_mutex);
++ goto worker_out;
++ }
++
++ while (!workers_may_exit)
++ {
++ apr_int16_t event;
++
++ _DBG("loop. conn_id=%d req_max=%d req_remain=%d",
++ conn_id, ap_max_requests_per_child, requests_this_child);
++
++ ((ap_max_requests_per_child != 0) &&
++ (requests_this_child < 1) && (workers_may_exit=1));
++
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ if (workers_may_exit) goto worker_out;
++
++ (void) ap_update_child_status_from_indexes(child_num, thread_num,
++ SERVER_READY,
++ (request_rec *) NULL);
++
++ THREAD_ACCEPT_LOCK;
++
++ /* -- setup pollset -- */
++ /* NOTE: we do _not_ do this upwards anylonger */
++ apr_poll_setup(&pollset, num_listensocks, tpool);
++ for(lr_walk = ap_listeners; lr_walk != NULL; lr_walk = lr_walk->next)
++ {
++ int fd;
++ apr_poll_socket_add(pollset, lr_walk->sd, APR_POLLIN);
++ apr_os_sock_get(&fd, lr_walk->sd);
++ _DBG("adding fd %d to pollset", fd);
++ }
++
++ if (workers_may_exit) goto worker_out;
++ _TRACE_CALL("apr_poll()");
++ srv = apr_poll(pollset, num_listensocks, &n, -1);
++ _TRACE_RET("apr_poll()");
++
++ if (srv != APR_SUCCESS)
++ {
++ if (APR_STATUS_IS_EINTR(srv))
++ {
++ _DBG("apr_poll() has been interrupted", 0);
++ THREAD_ACCEPT_UNLOCK;
++ continue;
++ }
++
++ /* apr_poll() will only return errors in catastrophic
++ * circumstances. Let's try exiting gracefully, for now. */
++ ap_log_error(APLOG_MARK, APLOG_ERR, srv, (const server_rec *)
++ ap_server_conf, "apr_poll: (listen)");
++ workers_may_exit = 1;
++ _DBG("poll error!");
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ THREAD_ACCEPT_UNLOCK;
++ goto worker_out;
++ }
++
++ /* find a listener */
++ _DBG("looking for an listener");
++ for (lr_walk=ap_listeners; lr_walk!=NULL; lr_walk = lr_walk->next)
++ {
++ int fd_tmp;
++ apr_os_sock_get(&fd_tmp, lr_walk->sd);
++ _DBG(" ... trying w/ fd=%d", fd_tmp);
++ apr_poll_revents_get(&event, lr_walk->sd, pollset);
++ if (event & (APR_POLLIN))
++ {
++ THREAD_ACCEPT_UNLOCK;
++ goto got_fd;
++ }
++ if (event & (APR_POLLERR))
++ {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
++ "got POLLERR in line 870");
++ }
++ }
++
++ THREAD_ACCEPT_UNLOCK;
++ _DBG("WARN: did not find the right listener");
++ sleep ( 1 );
++ continue;
++
++ got_fd:
++ _DBG("input available ... resetting socket.");
++ sock = NULL; /* important! */
++
++ _TRACE_CALL("accept_func()");
++ rv = lr_walk->accept_func((void*)&sock, lr_walk, ptrans);
++ _TRACE_RET("accept_func()");
++
++ if (rv == APR_EGENERAL)
++ {
++ /* E[NM]FILE, ENOMEM, etc */
++ _DBG("there was some error." );
++ workers_may_exit = 1;
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ break;
++ }
++
++ apr_thread_mutex_lock(idle_thread_count_mutex);
++ if (idle_thread_count > min_spare_threads)
++ {
++ idle_thread_count--;
++ }
++ else
++ {
++ if (!start_thread())
++ {
++ idle_thread_count--;
++ }
++ }
++ apr_thread_mutex_unlock(idle_thread_count_mutex);
++
++ if (!setjmp(thread_info_table[thread_num].jmpbuffer))
++ {
++ _DBG("marked jmpbufffer");
++ _TRACE_CALL("process_socket()");
++ process_socket(ptrans, sock, conn_id, bucket_alloc);
++ _TRACE_RET("process_socket()");
++ }
++ else
++ {
++ _DBG("landed from longjmp");
++ thread_info_table[thread_num].sock_fd = AP_metuxmpm_THISCHILD;
++ }
++ requests_this_child--;
++ apr_pool_clear(ptrans);
++ }
++
++ _DBG("thread loop finished");
++worker_out:
++ _DBG("this thread's work is done ... workers_may_exit=%d");
++
++ /* == think about it == */
++ apr_thread_mutex_lock(idle_thread_count_mutex);
++ idle_thread_count--;
++ apr_thread_mutex_unlock(idle_thread_count_mutex);
++
++ /* == */
++ apr_thread_mutex_lock(thread_pool_parent_mutex);
++ ap_update_child_status_from_indexes(child_num, thread_num, SERVER_DEAD,
++ (request_rec *) NULL);
++ apr_pool_destroy(tpool);
++ apr_thread_mutex_unlock(thread_pool_parent_mutex);
++
++ thread_cnt = worker_thread_count_add ( -1 );
++ worker_thread_free_ids[thread_cnt] = thread_num;
++ if (!thread_cnt)
++ {
++ /* All the threads have exited, now finish the shutdown process
++ * by signalling the sigwait thread */
++ _DBG("all workers have quit. killing myself (%d) with SIGTERM", my_pid);
++ kill(my_pid, SIGTERM);
++ }
++ else
++ {
++ _DBG("this is not the time to die - %d threads are still alive", thread_cnt);
++ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
++ }
++
++ apr_bucket_alloc_destroy(bucket_alloc);
++ _DBG("leaving. good bye");
++ return NULL;
++}
++
++
++
++/* Set group privileges.
++ *
++ * Note that we use the username as set in the config files, rather than
++ * the lookup of to uid --- the same uid may have multiple passwd entries,
++ * with different sets of groups for each.
++ */
++
++static int set_group_privs(uid_t uid, gid_t gid)
++{
++ if (!geteuid())
++ {
++ const char *name;
++
++ /* Get username if passed as a uid */
++
++ struct passwd *ent;
++
++ if ((ent = getpwuid(uid)) == NULL)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "getpwuid: couldn't determine user name from uid %u, "
++ "you probably need to modify the User directive",
++ (unsigned)uid);
++ return -1;
++ }
++
++ name = ent->pw_name;
++
++ /*
++ * Set the GID before initgroups(), since on some platforms
++ * setgid() is known to zap the group list.
++ */
++ if (setgid(gid) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "setgid: unable to set group id to Group %u",
++ (unsigned)gid);
++ return -1;
++ }
++
++ /* Reset `groups' attributes. */
++
++ if (initgroups(name, gid) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "initgroups: unable to set groups for User %s "
++ "and Group %u", name, (unsigned)gid);
++ return -1;
++ }
++ }
++ return 0;
++}
++
++
++static int metuxmpm_setup_child(int childnum)
++{
++ child_info_t *ug = &child_info_table[childnum];
++
++ if (ug->uid == -1 && ug->gid == -1) {
++ return unixd_setup_child();
++ }
++ if (set_group_privs(ug->uid, ug->gid)) {
++ return -1;
++ }
++ /* Only try to switch if we're running as root */
++ if (!geteuid()
++ && (
++#ifdef _OSD_POSIX
++ os_init_job_environment(server_conf, unixd_config.user_name,
++ one_process) != 0 ||
++#endif
++ setuid(ug->uid) == -1)) {
++ ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
++ "setuid: unable to change to uid: %ld",
++ (long) ug->uid);
++ return -1;
++ }
++ return 0;
++}
++
++static int check_signal(int signum)
++{
++ _DBG("signum=%d", signum);
++ switch (signum) {
++ case SIGTERM:
++ case SIGINT:
++ just_die(signum);
++ return 1;
++ }
++ return 0;
++}
++
++typedef struct metuxmpm_header
++{
++ char *headers;
++ apr_pool_t *p;
++} metuxmpm_header;
++
++/* Send a single HTTP header field to the client. Note that this function
++ * is used in calls to table_do(), so their interfaces are co-dependent.
++ * In other words, don't change this one without checking table_do in alloc.c.
++ * It returns true unless there was a write error of some kind.
++ */
++static int metuxmpm_header_field(metuxmpm_header *h,
++ const char *fieldname, const char *fieldval)
++{
++ apr_pstrcat(h->p, h->headers, fieldname, ": ", fieldval, CRLF, NULL);
++ return 1;
++}
++
++static inline ap_listen_rec* listen_add ( apr_pool_t* pool, apr_socket_t *sock, void* accept_func )
++{
++ ap_listen_rec *lr_walk, *lr_new;
++
++ _DBG("function started");
++ /* -- create an new listener for this child -- */
++ lr_new = apr_palloc(pool, sizeof(*lr_new));
++ lr_new->sd = sock;
++ lr_new->active = 1;
++ lr_new->accept_func = accept_func;
++ lr_new->next = NULL;
++
++ /* -- add the new listener_rec into the list -- */
++ /* FIXME: should we somehow lock this list ? */
++ if (lr_walk = ap_listeners)
++ {
++ while (lr_walk->next) lr_walk = lr_walk->next;
++ lr_walk->next = lr_new;
++ }
++ else
++ {
++ ap_listeners = lr_walk = lr_new;
++ }
++ num_listensocks++;
++ return lr_new;
++}
++
++static inline void listen_clear ()
++{
++ ap_listen_rec *lr_walk;
++
++ _DBG("function started");
++
++ /* FIXME: should we somehow lock this list ? */
++ while (ap_listeners)
++ {
++ lr_walk = ap_listeners->next;
++ apr_socket_close(ap_listeners->sd);
++ ap_listeners = lr_walk;
++ }
++ num_listensocks=0;
++}
++
++/* -- main routine of an child process -- */
++static void child_main(int child_num_arg)
++{
++ int i;
++ apr_status_t rv;
++ apr_socket_t *sock = NULL;
++
++ my_pid = getpid();
++ child_num = child_num_arg;
++
++ _DBG("sock_fd_in=%d sock_fd_out=%d", child_info_table[child_num].input, child_info_table[child_num].output );
++
++ /* -- allocate an new pool for us -- */
++ apr_pool_create(&pchild, pconf);
++
++ switch (child_info_table[child_num].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER:
++ _DBG("MULTIPLEXER %d", child_num);
++ break;
++
++ case CHILD_TYPE_PROCESSOR:
++ _DBG("PROCESSOR %d", child_num);
++
++ /* -- create new listener to receive from multiplexer -- */
++ apr_os_sock_put(&sock, &child_info_table[child_num].input, pconf);
++ listen_clear ();
++ listen_add ( pconf, sock, receive_from_multiplexer );
++ break;
++
++ default:
++ _DBG("unspecified child type for %d sleeping a while ...", child_num);
++ sleep ( 5 );
++ return;
++ }
++ /*stuff to do before we switch id's, so we have permissions.*/
++
++ /* -- init child process (uid switching etc) -- */
++ (metuxmpm_setup_child(child_num) && clean_child_exit(APEXIT_CHILDFATAL));
++ ap_run_child_init(pchild, ap_server_conf);
++
++ /*done with init critical section */
++
++ apr_setup_signal_thread();
++
++ requests_this_child = ap_max_requests_per_child;
++
++ /* Setup worker threads */
++
++ _DBG("setting up worker threads ... " );
++ ((threads_to_start > max_threads) && (threads_to_start = max_threads));
++ idle_thread_count = threads_to_start;
++ workers_may_exit = 0;
++ worker_thread_count = 0;
++ worker_thread_free_ids = (int *)apr_pcalloc(pchild, thread_limit * sizeof(int));
++ for (i = 0; i < max_threads; i++)
++ {
++ worker_thread_free_ids[i] = i;
++ }
++ apr_pool_create(&thread_pool_parent, pchild);
++ apr_thread_mutex_create(&thread_pool_parent_mutex,
++ APR_THREAD_MUTEX_DEFAULT, pchild);
++ apr_thread_mutex_create(&idle_thread_count_mutex,
++ APR_THREAD_MUTEX_DEFAULT, pchild);
++ apr_thread_mutex_create(&worker_thread_count_mutex,
++ APR_THREAD_MUTEX_DEFAULT, pchild);
++ apr_thread_mutex_create(&pipe_of_death_mutex,
++ APR_THREAD_MUTEX_DEFAULT, pchild);
++ apr_thread_mutex_create(&thread_accept_mutex,
++ APR_THREAD_MUTEX_DEFAULT, pchild);
++
++ apr_threadattr_create(&worker_thread_attr, pchild);
++ apr_threadattr_detach_set(worker_thread_attr, 1);
++
++ /* We are creating worker threads right now */
++ for (i=0; i < threads_to_start; i++)
++ {
++ /* start_thread shouldn't fail here */
++ _TRACE_CALL("start_thread()");
++ if (!start_thread()) break;
++ _TRACE_RET("start_thread()");
++ }
++
++ _TRACE_CALL("apr_signal_thread()");
++ apr_signal_thread(check_signal);
++ _TRACE_RET("apr_signal_thread");
++}
++
++static int make_child(server_rec *s, int slot)
++{
++ int pid;
++
++ switch (child_info_table[slot].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER: break;
++ case CHILD_TYPE_PROCESSOR: break;
++ default:
++ _DBG("no valid client in slot %d", slot);
++ sleep(1);
++ return 0;
++ }
++
++ if (slot + 1 > ap_max_daemons_limit)
++ {
++ ap_max_daemons_limit = slot + 1;
++ }
++
++ (void) ap_update_child_status_from_indexes(slot, 0, SERVER_STARTING,
++ (request_rec *) NULL);
++
++ if ((pid = fork()) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, errno, s,
++ "fork: Unable to fork new process");
++ /* In case system resources are maxxed out, we don't want
++ * Apache running away with the CPU trying to fork over and
++ * over and over again. */
++ sleep(10);
++
++ return -1;
++ }
++
++ if (!pid)
++ {
++#ifdef HAVE_BINDPROCESSOR
++ /* By default, AIX binds to a single processor. This bit unbinds
++ * children which will then bind to another CPU.
++ */
++ int status = bindprocessor(BINDPROCESS, (int)getpid(),
++ PROCESSOR_CLASS_ANY);
++ if (status != OK) {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno,
++ ap_server_conf, "processor unbind failed %d", status);
++ }
++#endif
++
++ RAISE_SIGSTOP(MAKE_CHILD);
++
++ /* XXX - For an unthreaded server, a signal handler will be necessary
++ * apr_signal(SIGTERM, just_die);
++ */
++ child_main(slot);
++ clean_child_exit(0);
++ }
++ /* else */
++ ap_child_table[slot].pid = pid;
++ ap_child_table[slot].status = SERVER_ALIVE;
++
++ return 0;
++}
++
++/* start up a bunch of children */
++static int startup_children(int number_to_start)
++{
++ int i;
++
++ for (i = 0; number_to_start && i < num_childs; ++i)
++ {
++ if (ap_child_table[i].pid) continue;
++ if (make_child(ap_server_conf, i) < 0) break;
++ --number_to_start;
++ }
++ return number_to_start;
++}
++
++
++/*
++ * spawn_rate is the number of children that will be spawned on the
++ * next maintenance cycle if there aren't enough servers. It is
++ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
++ * without the need to spawn.
++ */
++static int spawn_rate = 1;
++#ifndef MAX_SPAWN_RATE
++#define MAX_SPAWN_RATE (32)
++#endif
++static int hold_off_on_exponential_spawning;
++
++static void perform_child_maintenance(void)
++{
++ int i;
++ int free_length;
++ int free_slots[MAX_SPAWN_RATE];
++ int last_non_dead = -1;
++
++ /* initialize the free_list */
++ free_length = 0;
++
++ for (i = 0; i < num_childs; ++i)
++ {
++ if (ap_child_table[i].pid == 0)
++ {
++ if (free_length < spawn_rate)
++ {
++ free_slots[free_length] = i;
++ ++free_length;
++ }
++ }
++ else
++ {
++ last_non_dead = i;
++ }
++
++ if (i >= ap_max_daemons_limit && free_length >= spawn_rate)
++ {
++ break;
++ }
++ }
++ ap_max_daemons_limit = last_non_dead + 1;
++
++ if (free_length > 0)
++ {
++ for (i = 0; i < free_length; ++i)
++ {
++ _TRACE_CALL("make_child()");
++ make_child(ap_server_conf, free_slots[i]);
++ _TRACE_RET("make_child()");
++ }
++ /* the next time around we want to spawn twice as many if this
++ * wasn't good enough, but not if we've just done a graceful
++ */
++ if (hold_off_on_exponential_spawning)
++ {
++ --hold_off_on_exponential_spawning;
++ }
++ else if (spawn_rate < MAX_SPAWN_RATE)
++ {
++ spawn_rate *= 2;
++ }
++ }
++ else
++ {
++ spawn_rate = 1;
++ }
++}
++
++static void server_main_loop(int remaining_children_to_start)
++{
++ apr_exit_why_e exitwhy;
++ apr_proc_t pid;
++ int child_slot;
++ int status;
++ int i;
++ static int l=0;
++
++ while (!restart_pending && !shutdown_pending)
++ {
++ ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
++
++ if (pid.pid != -1)
++ {
++ if (ap_process_child_status(&pid, exitwhy, status)==APEXIT_CHILDFATAL)
++ {
++ _DBG("shutdown pending ...");
++ shutdown_pending = 1;
++ child_fatal = 1;
++ return;
++ }
++ /* non-fatal death... note that it's gone in the child table and
++ * clean out the status table. */
++ _DBG("child has #%d died ...", child_slot);
++ child_slot = -1;
++ for (i = 0; i < ap_max_daemons_limit; ++i)
++ {
++ if (ap_child_table[i].pid == pid.pid)
++ {
++ child_slot = i;
++ break;
++ }
++ }
++ if (child_slot >= 0)
++ {
++ ap_child_table[child_slot].pid = 0;
++ ap_update_child_status_from_indexes(child_slot, i, SERVER_DEAD,
++ (request_rec *) NULL);
++
++
++ if (remaining_children_to_start && (child_slot < num_childs))
++ {
++ /* we're still doing a 1-for-1 replacement of dead
++ * children with new children
++ */
++ _DBG("replacing by new child ...");
++ make_child(ap_server_conf, child_slot);
++ --remaining_children_to_start;
++ }
++#if APR_HAS_OTHER_CHILD
++ }
++ else if (apr_proc_other_child_read(&pid, status) == 0)
++ {
++ /* handled */
++#endif
++ }
++ else if (is_graceful)
++ {
++ /* Great, we've probably just lost a slot in the
++ * child table. Somehow we don't know about this
++ * child.
++ */
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
++ ap_server_conf,
++ "long lost child came home! (pid %ld)",
++ (long)pid.pid);
++ }
++ /* Don't perform idle maintenance when a child dies,
++ * only do it when there's a timeout. Remember only a
++ * finite number of children can die, and it's pretty
++ * pathological for a lot to die suddenly.
++ */
++ continue;
++ }
++ else if (remaining_children_to_start)
++ {
++ /* we hit a 1 second timeout in which none of the previous
++ * generation of children needed to be reaped... so assume
++ * they're all done, and pick up the slack if any is left.
++ */
++ _TRACE_CALL("startup_children()");
++ remaining_children_to_start = startup_children(remaining_children_to_start);
++ _TRACE_RET("startup_children()");
++ /* In any event we really shouldn't do the code below because
++ * few of the servers we just started are in the IDLE state
++ * yet, so we'd mistakenly create an extra server.
++ */
++ continue;
++ }
++
++ perform_child_maintenance();
++ }
++}
++
++int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
++{
++ int remaining_children_to_start;
++ int i;
++ int fd;
++ apr_status_t rv;
++ apr_size_t one = 1;
++ apr_socket_t *sock = NULL;
++
++ ap_log_pid(pconf, ap_pid_fname);
++
++ first_server_limit = server_limit;
++ first_thread_limit = thread_limit;
++ if (changed_limit_at_restart)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
++ "WARNING: Attempt to change ServerLimit or ThreadLimit "
++ "ignored during restart");
++ changed_limit_at_restart = 0;
++ }
++
++ ap_server_conf = s;
++
++ /* Initialize cross-process accept lock */
++ ap_lock_fname = apr_psprintf(_pconf, "%s.%u",
++ ap_server_root_relative(_pconf, ap_lock_fname),
++ my_pid);
++ rv = ACCEPT_PROC_MUTEX_CREATE;
++ if (rv != APR_SUCCESS)
++ {
++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
++ "Couldn't create cross-process lock");
++ return 1;
++ }
++
++ if (!is_graceful)
++ {
++ if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK)
++ {
++ return 1;
++ }
++ }
++ /* Initialize the child table */
++ if (!is_graceful)
++ {
++ for (i = 0; i < server_limit; i++)
++ {
++ ap_child_table[i].pid = 0;
++ }
++ }
++
++ /* We need to put the new listeners at the end of the ap_listeners
++ * list. If we don't, then the pool will be cleared before the
++ * open_logs phase is called for the second time, and ap_listeners
++ * will have only invalid data. If that happens, then the sockets
++ * that we opened using make_sock() will be lost, and the server
++ * won't start.
++ */
++ apr_os_file_get(&fd, pipe_of_death_in);
++ apr_os_sock_put(&sock, &fd, pconf);
++
++ listen_add ( pconf, sock, check_pipe_of_death );
++ set_signals();
++
++ /* If we're doing a graceful_restart then we're going to see a lot
++ * of children exiting immediately when we get into the main loop
++ * below (because we just sent them AP_SIG_GRACEFUL). This happens
++ * pretty rapidly... and for each one that exits we'll start a new one
++ * until we reach at least daemons_min_free. But we may be permitted to
++ * start more than that, so we'll just keep track of how many we're
++ * supposed to start up without the 1 second penalty between each fork.
++ */
++ remaining_children_to_start = num_childs;
++ if (!is_graceful) {
++ remaining_children_to_start = \
++ startup_children(remaining_children_to_start);
++ }
++ else {
++ /* give the system some time to recover before kicking into
++ * exponential mode */
++ hold_off_on_exponential_spawning = 10;
++ }
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
++ "%s configured -- resuming normal operations",
++ ap_get_server_version());
++ ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
++ "Server built: %s", ap_get_server_built());
++#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
++#ifdef NO_SERIALIZED_ACCEPT
++ _DBG("AcceptMutex: n/a (compiled w/ NO_SERIALIZED_ACCEPT)", 0 );
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "AcceptMutex: n/a (compiled w/ NO_SERIALIZED_ACCEPT)" );
++#else
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "AcceptMutex: %s (default: %s)",
++ apr_proc_mutex_name(process_accept_mutex),
++ apr_proc_mutex_defname());
++#endif
++#endif
++ restart_pending = shutdown_pending = 0;
++
++ server_main_loop(remaining_children_to_start);
++
++ if (shutdown_pending)
++ {
++ /* Time to gracefully shut down:
++ * Kill child processes, tell them to call child_exit, etc...
++ */
++ if (unixd_killpg(getpgrp(), SIGTERM) < 0)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "killpg SIGTERM");
++ }
++ ap_reclaim_child_processes(1); /* Start with SIGTERM */
++
++ if (!child_fatal)
++ {
++ /* cleanup pid file on normal shutdown */
++ const char *pidfile = NULL;
++ pidfile = ap_server_root_relative (pconf, ap_pid_fname);
++ if (pidfile != NULL && unlink(pidfile) == 0) {
++ ap_log_error(APLOG_MARK, APLOG_INFO, 0,
++ ap_server_conf,
++ "removed PID file %s (pid=%ld)",
++ pidfile, (long)getpid());
++ }
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
++ ap_server_conf, "caught SIGTERM, shutting down");
++ }
++ return 1;
++ }
++
++ /* we've been told to restart */
++ apr_signal(SIGHUP, SIG_IGN);
++
++ if (one_process) return 1; /* not worth thinking about */
++
++ if (is_graceful)
++ {
++ char char_of_death = AP_metuxmpm_CHAR_OF_DEATH;
++
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
++ ap_server_conf, AP_SIG_GRACEFUL_STRING " received. "
++ "Doing graceful restart");
++
++ /* This is mostly for debugging... so that we know what is still
++ * gracefully dealing with existing request.
++ */
++
++ for (i = 0; i < num_childs; ++i)
++ {
++ ((ap_child_table[i].pid) && (ap_child_table[i].status = SERVER_DYING));
++ }
++
++ /* give the children the signal to die */
++ for (i = 0; i < num_childs;)
++ {
++ if ((rv = apr_file_write(pipe_of_death_out, &char_of_death,&one)) != APR_SUCCESS)
++ {
++ if (APR_STATUS_IS_EINTR(rv)) continue;
++ ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
++ "write pipe_of_death");
++ }
++ i++;
++ }
++ }
++ else
++ {
++ /* Kill 'em all. Since the child acts the same on the parents SIGTERM
++ * and a SIGHUP, we may as well use the same signal, because some user
++ * pthreads are stealing signals from us left and right.
++ */
++ if (unixd_killpg(getpgrp(), SIGTERM) < 0)
++ {
++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
++ "killpg SIGTERM");
++ }
++ ap_reclaim_child_processes(1); /* Start with SIGTERM */
++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
++ ap_server_conf, "SIGHUP received. Attempting to restart");
++ }
++ return 0;
++}
++
++/* This really should be a post_config hook, but the error log is already
++ * redirected by that point, so we need to do this in the open_logs phase.
++ */
++static int metuxmpm_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
++{
++ apr_status_t rv;
++
++ pconf = p;
++ ap_server_conf = s;
++
++ _DBG("port=%d", ap_server_conf->port);
++
++ if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
++ ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
++ NULL, "metuxmpm_open_logs(): no listening sockets available, shutting down");
++ return DONE;
++ }
++
++ ap_log_pid(pconf, ap_pid_fname);
++
++ if ((rv = ap_mpm_pod_open(pconf, &pod))) {
++ ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
++ "Could not open pipe-of-death.");
++ return DONE;
++ }
++
++ if ((rv = apr_file_pipe_create(&pipe_of_death_in, &pipe_of_death_out,
++ pconf)) != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_ERR, rv,
++ (const server_rec*) ap_server_conf,
++ "apr_file_pipe_create (apipe_of_death)");
++ exit(1);
++ }
++ if ((rv = apr_file_pipe_timeout_set(pipe_of_death_in, 0)) != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_ERR, rv,
++ (const server_rec*) ap_server_conf,
++ "apr_file_pipe_timeout_set (pipe_of_death)");
++ exit(1);
++ }
++
++ return OK;
++}
++
++static int metuxmpm_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
++{
++ static int restart_num = 0;
++ int no_detach, debug, foreground;
++ ap_directive_t *pdir;
++ int i;
++ int tmp_server_limit = DEFAULT_SERVER_LIMIT;
++ int tmp_thread_limit = DEFAULT_THREAD_LIMIT;
++ apr_status_t rv;
++
++ debug = ap_exists_config_define("DEBUG");
++
++ if (debug) {
++ foreground = one_process = 1;
++ no_detach = 0;
++ }
++ else {
++ one_process = ap_exists_config_define("ONE_PROCESS");
++ no_detach = ap_exists_config_define("NO_DETACH");
++ foreground = ap_exists_config_define("FOREGROUND");
++ }
++
++ /* FIXME */
++/* no_detach = 0;
++ foreground = 0; */
++
++ /* sigh, want this only the second time around */
++ if (restart_num++ == 1)
++ {
++ is_graceful = 0;
++
++ if (!one_process && !foreground)
++ {
++ rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
++ : APR_PROC_DETACH_DAEMONIZE);
++ if (rv != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
++ "apr_proc_detach failed");
++ return HTTP_INTERNAL_SERVER_ERROR;
++ }
++ }
++
++ my_pid = getpid();
++ }
++
++ unixd_pre_config(ptemp);
++ ap_listen_pre_config();
++// num_childs = DEFAULT_NUM_DAEMON;
++ num_childs = 0;
++ threads_to_start = DEFAULT_START_THREAD;
++ min_spare_threads = DEFAULT_MIN_SPARE_THREAD;
++ max_spare_threads = DEFAULT_MAX_SPARE_THREAD;
++ max_threads = thread_limit;
++ ap_pid_fname = DEFAULT_PIDLOG;
++ ap_lock_fname = DEFAULT_LOCKFILE;
++ ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
++
++ apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
++
++ /* we need to know ServerLimit and ThreadLimit before we start processing
++ * the tree because we need to already have allocated child_info_table
++ */
++ for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next)
++ {
++ if (!strcasecmp(pdir->directive, "ServerLimit"))
++ {
++ if (atoi(pdir->args) > tmp_server_limit)
++ {
++ tmp_server_limit = atoi(pdir->args);
++ if (tmp_server_limit > MAX_SERVER_LIMIT)
++ {
++ tmp_server_limit = MAX_SERVER_LIMIT;
++ }
++ }
++ }
++ else if (!strcasecmp(pdir->directive, "ThreadLimit"))
++ {
++ if (atoi(pdir->args) > tmp_thread_limit)
++ {
++ tmp_thread_limit = atoi(pdir->args);
++ if (tmp_thread_limit > MAX_THREAD_LIMIT)
++ {
++ tmp_thread_limit = MAX_THREAD_LIMIT;
++ }
++ }
++ }
++ }
++
++ /* -- now setup the child information table -- */
++ child_info_table = (child_info_t *)apr_pcalloc(p, tmp_server_limit * sizeof(child_info_t));
++ child_info_table_size = tmp_server_limit; /* FIXME: remove tmp_server_limit */
++ for (i = 0; i < tmp_server_limit; i++)
++ {
++ child_info_table[i].uid = -1;
++ child_info_table[i].gid = -1;
++ child_info_table[i].input = -1;
++ child_info_table[i].output = -1;
++ child_info_table[i].type = -1;
++ child_info_table[i].id = i;
++ }
++
++ return OK;
++}
++
++#undef NO_BODY
++
++static int pass_request(request_rec *r)
++{
++ int rv;
++ struct msghdr msg;
++ struct cmsghdr *cmsg;
++ int sock_fd;
++ char *bodypart = NULL;
++ struct iovec iov[2];
++ conn_rec *c = r->connection;
++ apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc);
++ apr_bucket_brigade *bodypart_bb = NULL;
++ apr_size_t len = 0;
++ apr_size_t bodypart_len = 0;
++ metuxmpm_header h;
++ apr_bucket *bucket;
++ const apr_array_header_t *headers_in_array;
++ const apr_table_entry_t *headers_in;
++ int counter;
++
++ apr_socket_t *thesock = ap_get_module_config(r->connection->conn_config, &core_module);
++ metuxmpm_server_conf *sconf = metuxmpm_SERVER_CONF(r->server->module_config);
++
++ if ((!r->the_request) || (!strlen(r->the_request)))
++ {
++ _DBG("empty request. dropping it (%ld)", r->the_request);
++ return -1;
++ }
++
++ if (!sconf->child)
++ {
++ _DBG("server %s in child %d has no child_info assiocated",
++ r->hostname, child_num);
++ return -1;
++ }
++
++ _DBG("passing request to another child. Vhost: %s, child %d %d",
++ apr_table_get(r->headers_in, "Host"), child_num, sconf->child->output);
++ _DBG("r->the_request=\"%s\" len=%d", r->the_request, strlen(r->the_request));
++
++ ap_get_brigade(r->connection->input_filters, bb, AP_MODE_EXHAUSTIVE, APR_NONBLOCK_READ, len);
++
++ /* Scan the brigade looking for heap-buckets */
++
++ _DBG("Scanning the brigade");
++ bucket = APR_BRIGADE_FIRST(bb);
++ while (bucket != APR_BRIGADE_SENTINEL(bb) &&
++ APR_BUCKET_IS_HEAP(bucket)) {
++ _DBG("HEAP BUCKET is found, length=%d", bucket->length);
++ bucket = APR_BUCKET_NEXT(bucket);
++ if (!APR_BUCKET_IS_HEAP(bucket)) {
++ _DBG("NON-HEAP BUCKET is found, extracting the part of brigade before it");
++ bodypart_bb = bb;
++ bb = apr_brigade_split(bodypart_bb, bucket);
++ /* Do we need to apr_destroy_brigade(bb) here?
++ * Yeah, I know we do apr_pool_destroy(r->pool) before return, but
++ * ap_get_brigade is in non-blocking mode (however len is zero).
++ */
++ if (apr_brigade_pflatten(bodypart_bb, &bodypart, &bodypart_len, r->pool) != APR_SUCCESS) {
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Unable to flatten brigade, declining request");
++ apr_pool_destroy(r->pool);
++ return DECLINED;
++ }
++ _DBG("Brigade is flattened as bodypart (bodypart_len=%d)", bodypart_len);
++ }
++ }
++ _DBG("Scanning is finished");
++
++ apr_os_sock_get(&sock_fd, thesock);
++
++ h.p = r->pool;
++
++ headers_in_array = apr_table_elts(r->headers_in);
++ headers_in = (const apr_table_entry_t *) headers_in_array->elts;
++
++ h.headers = apr_pstrcat(h.p, r->the_request, CRLF, NULL);
++ for (counter = 0; counter < headers_in_array->nelts; counter++) {
++ if (headers_in[counter].key == NULL
++ || headers_in[counter].val == NULL) {
++ continue;
++ }
++ h.headers = apr_pstrcat(h.p, h.headers, headers_in[counter].key, ": ",
++ headers_in[counter].val, CRLF, NULL);
++
++ }
++ h.headers = apr_pstrcat(h.p, h.headers, CRLF, NULL);
++ ap_xlate_proto_to_ascii(h.headers, strlen(h.headers));
++
++ iov[0].iov_base = &bodypart_len;
++ iov[0].iov_len = sizeof(bodypart_len);
++ iov[1].iov_base = h.headers;
++ iov[1].iov_len = strlen(h.headers) + 1;
++
++ msg.msg_name = NULL;
++ msg.msg_namelen = 0;
++ msg.msg_iov = iov;
++ msg.msg_iovlen = 2;
++
++ cmsg = apr_palloc(r->pool, sizeof(*cmsg) + sizeof(sock_fd));
++ cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sock_fd);
++ cmsg->cmsg_level = SOL_SOCKET;
++ cmsg->cmsg_type = SCM_RIGHTS;
++
++ memcpy(CMSG_DATA(cmsg), &sock_fd, sizeof(sock_fd));
++
++ msg.msg_control = cmsg;
++ msg.msg_controllen = cmsg->cmsg_len;
++
++ _DBG("Writing message to %d, passing sock_fd: %d", sconf->child->output, sock_fd);
++ _DBG("headers=\"%s\"", h.headers);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message to %d, passing sd: %d", sconf->child->output, sock_fd);
++
++ if ((rv = sendmsg(sconf->child->output, &msg, 0)) == -1)
++ {
++ apr_pool_destroy(r->pool);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message failed %d %d", rv, errno);
++ return -1;
++ }
++
++ _DBG("Writing message succeeded %d", rv);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message succeeded %d", rv);
++
++ if (bodypart_len) {
++ _DBG("Passing bodypart (bodypart_len=%d) \"%s\"", bodypart_len, bodypart);
++ if ((rv = send(sconf->child->output, bodypart, bodypart_len, 0)) == -1) {
++ apr_pool_destroy(r->pool);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message failed %d %d", rv, errno);
++ return -1;
++ }
++ _DBG("Writing message succeeded %d", rv);
++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
++ "Writing message succeeded %d", rv);
++ } else {
++ _DBG("No bodypart");
++ }
++
++ /* -- close the socket at our site -- */
++ apr_socket_close(thesock);
++ /* DS: What is the purpose of this?
++ * apr_socket_close(sconf->child->output) seems more reasonable
++ */
++ _DBG("closing socket %d at our side", sock_fd);
++ apr_pool_destroy(r->pool);
++ return 1;
++}
++
++static int metuxmpm_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *server_list)
++{
++ int i;
++ server_rec *sr_walk;
++ metuxmpm_server_conf *sconf;
++
++ for (sr_walk = server_list; sr_walk; sr_walk = sr_walk->next)
++ {
++ sconf = metuxmpm_SERVER_CONF(sr_walk->module_config);
++ if (sconf->child)
++ {
++ _DBG("server \"%s\" child=%d fd_in=%d fd_out=%d",
++ sr_walk->server_hostname,
++ sconf->child->id,
++ sconf->child->input,
++ sconf->child->output );
++ }
++ else
++ {
++ _DBG("server \"%s\" has no child assiocated.",
++ sr_walk->server_hostname);
++ }
++ }
++
++ thread_info_table = (thread_info_t *)apr_pcalloc(p, thread_limit * sizeof(thread_info_t));
++ for (i = 0; i < thread_limit; i++)
++ {
++ thread_info_table[i].sock_fd = AP_metuxmpm_THISCHILD;
++ thread_info_table[i].status = 0;
++ }
++ ap_child_table = (ap_ctable *)apr_pcalloc(p, server_limit * sizeof(ap_ctable));
++
++ return OK;
++}
++
++static int metuxmpm_post_read(request_rec *r)
++{
++ int thread_num = r->connection->id % thread_limit;
++ metuxmpm_server_conf *sconf = metuxmpm_SERVER_CONF(r->server->module_config);
++
++ if (!strlen(r->the_request))
++ {
++ _DBG("corrupt request. aborting");
++ return DECLINED;
++ }
++
++ if (thread_info_table[thread_num].sock_fd != AP_metuxmpm_THISCHILD)
++ {
++ apr_socket_t *sock = NULL;
++
++ apr_os_sock_put(&sock, &thread_info_table[thread_num].sock_fd,
++ r->connection->pool);
++ ap_sock_disable_nagle(sock);
++ ap_set_module_config(r->connection->conn_config, &core_module, sock);
++ _DBG("not the right socket? ");
++ return OK;
++ }
++
++ switch (child_info_table[child_num].type)
++ {
++ case CHILD_TYPE_MULTIPLEXER:
++ {
++ _DBG("MULTIPLEXER => Determining if request should be passed. "
++ "Child Num: %d, dest-child: %d, hostname from server: %s r->hostname=%s r->the_request=\"%s\"",
++ child_num, sconf->child->id, r->server->server_hostname, r->hostname, r->the_request);
++
++ if (sconf->child->id != child_num)
++ {
++ _DBG("Passing request.");
++ if (pass_request(r) == -1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_ERR, 0,
++ ap_server_conf, "Could not pass request to proper "
++ "child, request will not be honoured.");
++ return DECLINED;
++ }
++ _DBG("doing longjmp");
++ longjmp(thread_info_table[thread_num].jmpbuffer, 1);
++ _DBG("request declined at our site");
++ return DECLINED;
++ _DBG("OUH! we should never reach this point");
++ }
++ _DBG("eeeh?! the server is assigned to the multiplexer! ... dropping request");
++ return DECLINED;
++ }
++ case CHILD_TYPE_PROCESSOR:
++ {
++ _DBG("PROCESSOR %d", child_num );
++ if (sconf->child->id != child_num)
++ {
++ _DBG("hmmpf! this server is not assigned to us! what did the mux have smoked ?!");
++ }
++ _DBG("request for %s / (server %s) seems to be for us", r->hostname, r->server->server_hostname );
++ return OK;
++ }
++ default:
++ {
++ _DBG("unspecified child type %d in %d, dropping request", child_info_table[child_num].type, child_num );
++ return OK;
++ }
++ }
++ _DBG("THIS POINT SHOULD NOT BE REACHED!");
++ return OK;
++}
++
++static void metuxmpm_hooks(apr_pool_t *p)
++{
++ /* The metuxmpm open_logs phase must run before the core's, or stderr
++ * will be redirected to a file, and the messages won't print to the
++ * console.
++ */
++ static const char *const aszSucc[] = {"core.c", NULL};
++ one_process = 0;
++
++ ap_hook_open_logs(metuxmpm_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
++ ap_hook_pre_config(metuxmpm_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
++ ap_hook_post_config(metuxmpm_post_config, NULL, NULL, APR_HOOK_MIDDLE);
++
++ /* Both of these must be run absolutely first. If this request isn't for
++ * this server then we need to forward it to the proper child. No sense
++ * tying up this server running more post_read request hooks if it is
++ * just going to be forwarded along. The process_connection hook allows
++ * metuxmpm to receive the passed request correctly, by automatically
++ * filling in the core_input_filter's ctx pointer.
++ */
++ ap_hook_post_read_request(metuxmpm_post_read, NULL, NULL,
++ APR_HOOK_REALLY_FIRST);
++ ap_hook_process_connection(metuxmpm_process_connection, NULL, NULL,
++ APR_HOOK_REALLY_FIRST);
++}
++
++//static const char *cf_NumServers(cmd_parms *cmd, void *dummy,
++// const char *arg)
++//{
++// const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++// if (err != NULL) return err;
++//
++// num_childs = atoi(arg);
++// if (num_childs > server_limit) {
++// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++// "WARNING: NumServers of %d exceeds ServerLimit value "
++// "of %d servers,", num_childs, server_limit);
++// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++// " lowering NumServers to %d. To increase, please "
++// "see the", server_limit);
++// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++// " ServerLimit directive.");
++// num_childs = server_limit;
++// }
++// else if (num_childs < 1)
++// {
++// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++// "WARNING: Require NumServers > 0, setting to 1");
++// num_childs = 1;
++// }
++// return NULL;
++//}
++
++static const char *cf_StartThreads(cmd_parms *cmd, void *dummy,
++ const char *arg)
++{
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) return err;
++
++ threads_to_start = atoi(arg);
++ if (threads_to_start > thread_limit) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: StartThreads of %d exceeds ThreadLimit value"
++ " of %d threads,", threads_to_start,
++ thread_limit);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " lowering StartThreads to %d. To increase, please"
++ " see the", thread_limit);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " ThreadLimit directive.");
++ }
++ else if (threads_to_start < 1) {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require StartThreads > 0, setting to 1");
++ threads_to_start = 1;
++ }
++ return NULL;
++}
++
++static const char *cf_MinSpareThreads(cmd_parms *cmd, void *dummy,
++ const char *arg)
++{
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) return err;
++
++ min_spare_threads = atoi(arg);
++ if (min_spare_threads <= 0)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: detected MinSpareThreads set to non-positive.");
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "Resetting to 1 to avoid almost certain Apache failure.");
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "Please read the documentation.");
++ min_spare_threads = 1;
++ }
++
++ return NULL;
++}
++
++static const char *cf_MaxSpareThreads(cmd_parms *cmd, void *dummy,
++ const char *arg)
++{
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) return err;
++
++ max_spare_threads = atoi(arg);
++ if (max_spare_threads >= thread_limit)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: detected MinSpareThreads set higher than");
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "ThreadLimit. Resetting to %d", thread_limit);
++ max_spare_threads = thread_limit;
++ }
++ return NULL;
++}
++
++static const char *cf_MaxThreadsmetuxmpm(cmd_parms *cmd, void *dummy, const char *arg)
++{
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) return err;
++
++ max_threads = atoi(arg);
++ if (max_threads > thread_limit)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: detected MaxThreadsmetuxmpm set higher than");
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "ThreadLimit. Resetting to %d", thread_limit);
++ max_threads = thread_limit;
++ }
++ return NULL;
++}
++
++static const char* child_add ( int type, const char* user_name, const char* group_name )
++{
++ _DBG("%d: %s.%s", num_childs, user_name, group_name);
++ if (num_childs<server_limit)
++ {
++ int socks[2];
++
++ child_info_table[num_childs].uid = ap_uname2id(user_name);
++ child_info_table[num_childs].gid = ap_gname2id(group_name);
++ child_info_table[num_childs].type = type;
++
++ socketpair(PF_UNIX, SOCK_STREAM, 0, socks);
++ child_info_table[num_childs].input = socks[0];
++ child_info_table[num_childs].output = socks[1];
++
++ _DBG("[%d] uid=%d gid=%d type=%d fd_in=%d fd_out=%d",
++ num_childs,
++ child_info_table[num_childs].uid,
++ child_info_table[num_childs].gid,
++ child_info_table[num_childs].type,
++ child_info_table[num_childs].input,
++ child_info_table[num_childs].output
++ );
++
++ if (child_info_table[num_childs].uid == 0 ||
++ child_info_table[num_childs].gid == 0)
++ {
++ _DBG("Assigning root user/group to a child.");
++ }
++ num_childs++;
++ return NULL;
++ }
++
++ return "Trying to use more child ID's than NumServers. "
++ "Increase NumServers in your config file.";
++}
++
++/* we define an Processor w/ specific uid/gid */
++static const char *cf_Processor(
++ cmd_parms *cmd, void *dummy, const char *user_name, const char *group_name)
++{
++ _DBG("%d: %s.%s", num_childs, user_name, group_name);
++ return child_add ( CHILD_TYPE_PROCESSOR, user_name, group_name );
++}
++
++/* we define an Multiplexer child w/ specific uid/gid */
++static const char *cf_Multiplexer(
++ cmd_parms *cmd, void *dummy, const char *user_name, const char *group_name)
++{
++ _DBG("%d: %s.%s", num_childs, user_name, group_name);
++ return child_add ( CHILD_TYPE_MULTIPLEXER, user_name, group_name );
++}
++
++/* process the config file option AssignUserId */
++/* -- FIXME: perhaps we could add childs from here automatically -- */
++static const char * cf_AssignUserId
++(
++ cmd_parms *cmd,
++ void *dummy,
++ const char *user_name,
++ const char *group_name
++)
++{
++ int i;
++ int matching = 0;
++ int uid = ap_uname2id(user_name);
++ int gid = ap_gname2id(group_name);
++ const char *errstr;
++
++ metuxmpm_server_conf *sconf
++ = metuxmpm_SERVER_CONF(cmd->server->module_config);
++
++ sconf->fullsockname =
++ apr_pstrcat(cmd->pool, sconf->sockname, ".", user_name,":", group_name, NULL);
++
++ _DBG("user=\"%s\" (%d) group=\"%s\" (%d) numchilds=%d", user_name, uid, group_name, gid, num_childs );
++
++ for (i = 0; i < num_childs; i++)
++ {
++ _DBG("trying %d: %d.%d / %d", i,
++ child_info_table[i].uid, child_info_table[i].gid, child_info_table[i].type );
++
++ if ((uid == child_info_table[i].uid) &&
++ (gid == child_info_table[i].gid) &&
++ (child_info_table[i].type == CHILD_TYPE_PROCESSOR))
++ {
++ /* create an socket for this child, if it has no one */
++ /* FIXME: we should do it anywhere else, for _all_ childs */
++ sconf->child = &child_info_table[i];
++ _DBG("assigning server to child %d; "
++ "UID: %d, GID: %d, input=%d, output=%d",
++ i, uid, gid, sconf->child->input, sconf->child->output);
++ return NULL;
++ }
++ }
++
++ _DBG("assigning server to child FAILED %d; UID: %d, GID: %d ", i, uid, gid);
++ return "Unable to find process with matching uid/gid.";
++}
++
++static const char *cf_ServerLimit (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ int tmp_server_limit;
++
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) return err;
++
++ tmp_server_limit = atoi(arg);
++ /* you cannot change ServerLimit across a restart; ignore
++ * any such attempts
++ */
++ if (first_server_limit && tmp_server_limit != server_limit)
++ {
++ /* how do we log a message? the error log is a bit bucket at this
++ * point; we'll just have to set a flag so that ap_mpm_run()
++ * logs a warning later
++ */
++ changed_limit_at_restart = 1;
++ return NULL;
++ }
++ server_limit = tmp_server_limit;
++
++ if (server_limit > MAX_SERVER_LIMIT)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: ServerLimit of %d exceeds compile time limit "
++ "of %d servers,", server_limit, MAX_SERVER_LIMIT);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
++ server_limit = MAX_SERVER_LIMIT;
++ }
++ else if (server_limit < 1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require ServerLimit > 0, setting to 1");
++ server_limit = 1;
++ }
++ return NULL;
++}
++
++static const char *cf_ThreadLimit (cmd_parms *cmd, void *dummy, const char *arg)
++{
++ int tmp_thread_limit;
++
++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
++ if (err != NULL) return err;
++
++ tmp_thread_limit = atoi(arg);
++ /* you cannot change ThreadLimit across a restart; ignore
++ * any such attempts
++ */
++ if (first_thread_limit && tmp_thread_limit != thread_limit)
++ {
++ /* how do we log a message? the error log is a bit bucket at this
++ * point; we'll just have to set a flag so that ap_mpm_run()
++ * logs a warning later
++ */
++ changed_limit_at_restart = 1;
++ return NULL;
++ }
++ thread_limit = tmp_thread_limit;
++
++ if (thread_limit > MAX_THREAD_LIMIT)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: ThreadLimit of %d exceeds compile time limit "
++ "of %d servers,", thread_limit, MAX_THREAD_LIMIT);
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
++ thread_limit = MAX_THREAD_LIMIT;
++ }
++ else if (thread_limit < 1)
++ {
++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
++ "WARNING: Require ThreadLimit > 0, setting to 1");
++ thread_limit = 1;
++ }
++ return NULL;
++}
++
++static const command_rec metuxmpm_cmds[] = {
++UNIX_DAEMON_COMMANDS,
++LISTEN_COMMANDS,
++AP_INIT_TAKE1("StartThreads", cf_StartThreads, NULL, RSRC_CONF,
++ "Number of threads each child creates"),
++AP_INIT_TAKE1("MinSpareThreads", cf_MinSpareThreads, NULL, RSRC_CONF,
++ "Minimum number of idle threads per child, to handle "
++ "request spikes"),
++AP_INIT_TAKE1("MaxSpareThreads", cf_MaxSpareThreads, NULL, RSRC_CONF,
++ "Maximum number of idle threads per child"),
++AP_INIT_TAKE1("MaxThreadsmetuxmpm", cf_MaxThreadsmetuxmpm, NULL, RSRC_CONF,
++ "Maximum number of threads per child"),
++AP_INIT_TAKE2("Multiplexer", cf_Multiplexer, NULL, RSRC_CONF,
++ "Specify an Multiplexer Child configuration."),
++AP_INIT_TAKE2("Processor", cf_Processor, NULL, RSRC_CONF,
++ "Specify a User and Group for a specific child process."),
++AP_INIT_TAKE2("AssignUserID", cf_AssignUserId, NULL, RSRC_CONF,
++ "Tie a virtual host to a specific child process."),
++AP_INIT_TAKE1("ServerLimit", cf_ServerLimit, NULL, RSRC_CONF,
++ "Maximum value of NumServers for this run of Apache"),
++AP_INIT_TAKE1("ThreadLimit", cf_ThreadLimit, NULL, RSRC_CONF,
++ "Maximum worker threads in a server for this run of Apache"),
++{ NULL }
++};
++
++/* == allocate an private server config structure == */
++static void *metuxmpm_create_config(apr_pool_t *p, server_rec *s)
++{
++ metuxmpm_server_conf *c = (metuxmpm_server_conf *)
++ apr_pcalloc(p, sizeof(metuxmpm_server_conf));
++ c->child = NULL;
++ return c;
++}
++
++module AP_MODULE_DECLARE_DATA mpm_metuxmpm_module =
++{
++ MPM20_MODULE_STUFF,
++ ap_mpm_rewrite_args, /* hook to run before apache parses args */
++ NULL, /* create per-directory config structure */
++ NULL, /* merge per-directory config structures */
++ metuxmpm_create_config, /* create per-server config structure */
++ NULL, /* merge per-server config structures */
++ metuxmpm_cmds, /* command apr_table_t */
++ metuxmpm_hooks /* register_hooks */
++};
++
+diff -ruN httpd-2.0.47/server/mpm/experimental/metuxmpm/mpm_default.h httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/mpm_default.h
+--- httpd-2.0.47/server/mpm/experimental/metuxmpm/mpm_default.h 1970-01-01 06:00:00.000000000 +0600
++++ httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/mpm_default.h 2003-08-13 23:33:23.000000000 +0600
+@@ -0,0 +1,115 @@
++/* ====================================================================
++ * The Apache Software License, Version 1.1
++ *
++ * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
++ * reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ *
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ *
++ * 3. The end-user documentation included with the redistribution,
++ * if any, must include the following acknowledgment:
++ * "This product includes software developed by the
++ * Apache Software Foundation (http://www.apache.org/)."
++ * Alternately, this acknowledgment may appear in the software itself,
++ * if and wherever such third-party acknowledgments normally appear.
++ *
++ * 4. The names "Apache" and "Apache Software Foundation" must
++ * not be used to endorse or promote products derived from this
++ * software without prior written permission. For written
++ * permission, please contact apache@apache.org.
++ *
++ * 5. Products derived from this software may not be called "Apache",
++ * nor may "Apache" appear in their name, without prior written
++ * permission of the Apache Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
++ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ * ====================================================================
++ *
++ * This software consists of voluntary contributions made by many
++ * individuals on behalf of the Apache Software Foundation. For more
++ * information on the Apache Software Foundation, please see
++ * <http://www.apache.org/>.
++ *
++ * Portions of this software are based upon public domain software
++ * originally written at the National Center for Supercomputing Applications,
++ * University of Illinois, Urbana-Champaign.
++ */
++
++#ifndef APACHE_MPM_DEFAULT_H
++#define APACHE_MPM_DEFAULT_H
++
++#define NO_SERIALIZED_ACCEPT
++
++/* Number of threads to spawn off by default --- also, if fewer than
++ * this free when the caretaker checks, it will spawn more.
++ */
++#ifndef DEFAULT_START_THREAD
++#define DEFAULT_START_THREAD 5
++#endif
++
++/* Maximum number of *free* server threads --- more than this, and
++ * they will die off.
++ */
++
++#ifndef DEFAULT_MAX_SPARE_THREAD
++#define DEFAULT_MAX_SPARE_THREAD 10
++#endif
++
++/* Minimum --- fewer than this, and more will be created */
++
++#ifndef DEFAULT_MIN_SPARE_THREAD
++#define DEFAULT_MIN_SPARE_THREAD 5
++#endif
++
++/* Number of servers to spawn off by default
++ */
++#ifndef DEFAULT_NUM_DAEMON
++#define DEFAULT_NUM_DAEMON 2
++#endif
++
++/* File used for accept locking, when we use a file */
++#ifndef DEFAULT_LOCKFILE
++#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
++#endif
++
++/* Where the main/parent process's pid is logged */
++#ifndef DEFAULT_PIDLOG
++#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
++#endif
++
++/*
++ * Interval, in microseconds, between scoreboard maintenance.
++ */
++#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
++#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
++#endif
++
++/* Number of requests to try to handle in a single process. If <= 0,
++ * the children don't die off.
++ */
++#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
++#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
++#endif
++
++#endif /* AP_MPM_DEFAULT_H */
+diff -ruN httpd-2.0.47/server/mpm/experimental/metuxmpm/mpm.h httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/mpm.h
+--- httpd-2.0.47/server/mpm/experimental/metuxmpm/mpm.h 1970-01-01 06:00:00.000000000 +0600
++++ httpd-2.0.47-metuxmpm/server/mpm/experimental/metuxmpm/mpm.h 2003-08-13 23:33:23.000000000 +0600
+@@ -0,0 +1,100 @@
++/* ====================================================================
++ * The Apache Software License, Version 1.1
++ *
++ * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
++ * reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ *
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ *
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in
++ * the documentation and/or other materials provided with the
++ * distribution.
++ *
++ * 3. The end-user documentation included with the redistribution,
++ * if any, must include the following acknowledgment:
++ * "This product includes software developed by the
++ * Apache Software Foundation (http://www.apache.org/)."
++ * Alternately, this acknowledgment may appear in the software itself,
++ * if and wherever such third-party acknowledgments normally appear.
++ *
++ * 4. The names "Apache" and "Apache Software Foundation" must
++ * not be used to endorse or promote products derived from this
++ * software without prior written permission. For written
++ * permission, please contact apache@apache.org.
++ *
++ * 5. Products derived from this software may not be called "Apache",
++ * nor may "Apache" appear in their name, without prior written
++ * permission of the Apache Software Foundation.
++ *
++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
++ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
++ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
++ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
++ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
++ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ * ====================================================================
++ *
++ * This software consists of voluntary contributions made by many
++ * individuals on behalf of the Apache Software Foundation. For more
++ * information on the Apache Software Foundation, please see
++ * <http://www.apache.org/>.
++ *
++ * Portions of this software are based upon public domain software
++ * originally written at the National Center for Supercomputing Applications,
++ * University of Illinois, Urbana-Champaign.
++ */
++
++#include "httpd.h"
++#include "mpm_default.h"
++#include "unixd.h"
++
++#ifndef APACHE_MPM_METUXMPM_H
++#define APACHE_MPM_METUXMPM_H
++
++#define METUXMPM_MPM
++
++#define MPM_NAME "metuxmpm"
++
++#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
++#define AP_MPM_WANT_WAIT_OR_TIMEOUT
++#define AP_MPM_WANT_PROCESS_CHILD_STATUS
++#define AP_MPM_WANT_SET_PIDFILE
++#define AP_MPM_WANT_SET_SCOREBOARD
++#define AP_MPM_WANT_SET_LOCKFILE
++#define AP_MPM_WANT_SET_MAX_REQUESTS
++#define AP_MPM_WANT_SET_COREDUMPDIR
++#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
++#define AP_MPM_WANT_SIGNAL_SERVER
++#define AP_MPM_USES_POD
++
++#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
++#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
++#define MPM_ACCEPT_FUNC unixd_accept
++
++/* Table of child status */
++#define SERVER_DEAD 0
++#define SERVER_DYING 1
++#define SERVER_ALIVE 2
++
++typedef struct ap_ctable{
++ pid_t pid;
++ unsigned char status;
++} ap_ctable;
++
++extern int ap_threads_per_child;
++extern int ap_max_daemons_limit;
++extern server_rec *ap_server_conf;
++
++#endif /* APACHE_MPM_METUXMPM_H */
+diff -ruN httpd-2.0.47/srclib/apr/network_io/unix/sockets.c httpd-2.0.47-metuxmpm/srclib/apr/network_io/unix/sockets.c
+--- httpd-2.0.47/srclib/apr/network_io/unix/sockets.c 2003-05-30 18:50:39.000000000 +0600
++++ httpd-2.0.47-metuxmpm/srclib/apr/network_io/unix/sockets.c 2003-08-13 23:33:23.000000000 +0600
+@@ -387,7 +387,36 @@
+ set_socket_vars(*sock, APR_INET, SOCK_STREAM, 0);
+ (*sock)->timeout = -1;
+ }
+- (*sock)->local_port_unknown = (*sock)->local_interface_unknown = 1;
++// (*sock)->local_port_unknown = (*sock)->local_interface_unknown = 1;
++ if (1)
++ {
++ /* fixup socket's peer information.
++ we need it for the muxmpm. enrico weigelt, metux ITS
++ <weigelt@metux.de>
++ */
++ /* XXX next line looks bogus w.r.t. AF_INET6 support */
++
++ /* adjust remote address */
++ (*sock)->remote_addr->salen = sizeof((*sock)->remote_addr->sa);
++ getpeername(
++ *thesock,
++ (struct sockaddr*)&((*sock)->remote_addr->sa),
++ &((*sock)->remote_addr->salen)
++ );
++ (*sock)->remote_addr->port = ntohs((*sock)->remote_addr->sa.sin.sin_port);
++
++ /* XXX assumes sin_port and sin6_port at same offset */
++
++ /* adjust local address */
++ getsockname(
++ *thesock,
++ (struct sockaddr*)&((*sock)->local_addr->sa),
++ &((*sock)->local_addr->salen)
++ );
++ (*sock)->local_addr->port = ntohs((*sock)->local_addr->sa.sin.sin_port);
++ (*sock)->local_port_unknown = (*sock)->local_interface_unknown = 0;
++ }
++
+ (*sock)->remote_addr_unknown = 1;
+ (*sock)->socketdes = *thesock;
+ return APR_SUCCESS;
projects / packages / apache.git / commitdiff