diff -urN httpd-2.2.0.org/server/mpm/config.m4 httpd-2.2.0/server/mpm/config.m4
--- httpd-2.2.0.org/server/mpm/config.m4 2005-10-30 18:05:26.000000000 +0100
+++ httpd-2.2.0/server/mpm/config.m4 2005-12-12 11:37:00.900963000 +0100
@@ -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|event|worker|prefork|mpmt_os2}),[
+ MPM={beos|event|worker|prefork|mpmt_os2|metuxmpm}),[
APACHE_MPM=$withval
],[
if test "x$APACHE_MPM" = "x"; then
@@ -14,7 +14,7 @@
ap_mpm_is_threaded ()
{
- if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "event" ; then
+ if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "metuxmpm"; then
return 0
else
return 1
@@ -23,7 +23,7 @@
ap_mpm_is_experimental ()
{
- if test "$apache_cv_mpm" = "event" ; then
+ if test "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "metuxmpm"; then
return 0
else
return 1
diff -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/config5.m4 httpd-2.2.0/server/mpm/experimental/metuxmpm/config5.m4
--- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/config5.m4 1970-01-01 01:00:00.000000000 +0100
+++ httpd-2.2.0/server/mpm/experimental/metuxmpm/config5.m4 2005-12-12 11:37:00.900963000 +0100
@@ -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 -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/Makefile.in httpd-2.2.0/server/mpm/experimental/metuxmpm/Makefile.in
--- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/Makefile.in 1970-01-01 01:00:00.000000000 +0100
+++ httpd-2.2.0/server/mpm/experimental/metuxmpm/Makefile.in 2005-12-12 11:37:00.900963000 +0100
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME = libmetuxmpm.la
+LTLIBRARY_SOURCES = metuxmpm.c
+
+include $(top_srcdir)/build/ltlib.mk
diff -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/metuxmpm.c httpd-2.2.0/server/mpm/experimental/metuxmpm/metuxmpm.c
--- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/metuxmpm.c 1970-01-01 01:00:00.000000000 +0100
+++ httpd-2.2.0/server/mpm/experimental/metuxmpm/metuxmpm.c 2005-12-12 11:35:35.000000000 +0100
@@ -0,0 +1,2627 @@
+/* ====================================================================
+ * 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
+ * .
+ *
+ * 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
+#endif
+#if APR_HAVE_SYS_SOCKET_H
+#include
+#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
+#endif
+#ifdef HAVE_SYS_POLL_H
+#include
+#endif
+
+/* ### should be APR-ized */
+#include
+#include
+#include
+#include
+#include
+#ifdef HAVE_SYS_PROCESSOR_H
+#include /* 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(text,par...)
+# define _TRACE_RET(text,par...)
+# define _TRACE_CALL(text,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 256
+#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 */
+ const char *chroot_dir; /* can be null */
+} 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",0); \
+ apr_thread_mutex_lock(thread_accept_mutex); \
+ _DBG("got thread_accept_mutex locked",0);
+
+#define THREAD_ACCEPT_UNLOCK \
+ _DBG("unlocking thread_accept_mutex",0); \
+ apr_thread_mutex_unlock(thread_accept_mutex); \
+ _DBG("got thread_accept_mutex unlocked",0);
+#else
+
+#define THREAD_ACCEPT_LOCK \
+ _DBG("omitted locking thread_accept_mutex",0);
+
+#define THREAD_ACCEPT_UNLOCK \
+ _DBG("omitted unlocking thread_accept_mutex",0);
+
+#endif
+
+
+static apr_pollfd_t *find_poll_sock(apr_pollfd_t *aprset, apr_socket_t *sock)
+{
+ apr_pollfd_t *curr = aprset;
+
+ while (curr->desc.s != sock) {
+ if (curr->desc_type == APR_POLL_LASTDESC) {
+ return NULL;
+ }
+ curr++;
+ }
+
+ return curr;
+}
+
+static apr_status_t apr_poll_revents_get(apr_int16_t *event, apr_socket_t *sock, apr_pollfd_t *aprset)
+{
+ apr_pollfd_t *curr = find_poll_sock(aprset, sock);
+ if (curr == NULL) {
+ return APR_NOTFOUND;
+ }
+
+ (*event) = curr->rtnevents;
+ return APR_SUCCESS;
+}
+
+
+/* == 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 %d",child_num);
+ break;
+ case CHILD_TYPE_PROCESSOR:
+ _DBG("type=PROCESSOR %d",child_num);
+ break;
+ default:
+ _DBG("type UNKNOWN! %d",child_num);
+ }
+
+ 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",0);
+
+ /* -- 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()",0);
+ rc = apr_thread_create(&thread, worker_thread_attr, worker_thread_proc,
+ &worker_thread_free_ids[worker_thread_count], pchild);
+ _TRACE_RET("apr_thread_create()",0);
+ 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",0);
+ return 1;
+ }
+
+ /* we already have too many threads running */
+ _DBG("too many running threads. aborting",0);
+ if (!thread_overflow_reported)
+ {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0,
+ ap_server_conf,
+ "server reached MaxThreadsPerChild setting, "
+ "consider raising the MaxThreadsPerChild 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_socket_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",0);
+ }
+
+ 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",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",0);
+
+ /* === 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_pollset_create(&pollset, num_listensocks, tpool, 0);
+ apr_pollset_create(&pollset, num_listensocks, ptrans, 0);
+ for(lr_walk = ap_listeners; lr_walk != NULL; lr_walk = lr_walk->next)
+ {
+ int fd;
+ apr_pollfd_t new_pollfd;
+ new_pollfd.desc_type = APR_POLL_SOCKET;
+ new_pollfd.reqevents = APR_POLLIN;
+ new_pollfd.desc.s = lr_walk->sd;
+ new_pollfd.client_data = lr_walk;
+ apr_pollset_add(pollset, &new_pollfd);
+ 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()",0);
+ srv = apr_poll(pollset, num_listensocks, &n, -1);
+ _TRACE_RET("apr_poll()",0);
+
+ 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!",0);
+ _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
+ THREAD_ACCEPT_UNLOCK;
+ goto worker_out;
+ }
+
+ /* find a listener */
+ _DBG("looking for an listener",0);
+ 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",0);
+ sleep ( 1 );
+ continue;
+
+ got_fd:
+ _DBG("input available ... resetting socket.",0);
+ sock = NULL; /* important! */
+
+ _TRACE_CALL("accept_func()",0);
+ rv = lr_walk->accept_func((void*)&sock, lr_walk, ptrans);
+ _TRACE_RET("accept_func()",0);
+
+ if (rv == APR_EGENERAL)
+ {
+ /* E[NM]FILE, ENOMEM, etc */
+ _DBG("there was some error." ,0);
+ 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",0);
+ _TRACE_CALL("process_socket()",0);
+ process_socket(ptrans, sock, conn_id, bucket_alloc);
+ _TRACE_RET("process_socket()",0);
+ }
+ else
+ {
+ _DBG("landed from longjmp",0);
+ thread_info_table[thread_num].sock_fd = AP_metuxmpm_THISCHILD;
+ }
+ requests_this_child--;
+ apr_pool_clear(ptrans);
+ }
+
+ _DBG("thread loop finished",0);
+worker_out:
+ _DBG("this thread's work is done ... workers_may_exit=%d",workers_may_exit);
+
+ /* == 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",0);
+ 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",0);
+ /* -- 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",0);
+
+ /* 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);
+ if (child_info_table[child_num].chroot_dir){
+ _DBG("chroot to %s",child_info_table[child_num].chroot_dir);
+ if (chroot(child_info_table[child_num].chroot_dir)){
+ _DBG("chroot failure %s",child_info_table[child_num].chroot_dir);
+ return;
+ }
+ }
+
+ 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 ... " ,0);
+ ((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()",0);
+ if (!start_thread()) break;
+ _TRACE_RET("start_thread()",0);
+ }
+
+ _TRACE_CALL("apr_signal_thread()",0);
+ apr_signal_thread(check_signal);
+ _TRACE_RET("apr_signal_thread",0);
+}
+
+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_scoreboard_image->parent[slot].pid = pid;
+
+ 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()",0);
+ make_child(ap_server_conf, free_slots[i]);
+ _TRACE_RET("make_child()",0);
+ }
+ /* 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 ...",0);
+ 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 ...",0);
+ make_child(ap_server_conf, child_slot);
+ --remaining_children_to_start;
+ }
+#if APR_HAS_OTHER_CHILD
+ }
+ else if (apr_proc_other_child_alert(&pid, APR_OC_REASON_DEATH, 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()",0);
+ remaining_children_to_start = startup_children(remaining_children_to_start);
+ _TRACE_RET("startup_children()",0);
+ /* 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",0);
+ 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",0);
+ 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",0);
+
+ 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",0);
+ }
+
+ /* -- 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",0);
+ 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? ",0);
+ 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.",0);
+ 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",0);
+ longjmp(thread_info_table[thread_num].jmpbuffer, 1);
+ _DBG("request declined at our site",0);
+ return DECLINED;
+ _DBG("OUH! we should never reach this point",0);
+ }
+ _DBG("eeeh?! the server is assigned to the multiplexer! ... dropping request",0);
+ 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 ?!",0);
+ }
+ _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!",0);
+ 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_MaxThreadsPerChild(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 MaxThreadsPerChild 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 ,const char* chroot_dir )
+{
+ _DBG("%d: %s.%s %s", num_childs, user_name, group_name, chroot_dir);
+ if (num_childs 0){
+ child_info_table[num_childs].chroot_dir = chroot_dir;
+ /* should copy the contents */
+ /* do we need to check its existence? */
+ }
+ }
+
+ _DBG("[%d] uid=%d gid=%d type=%d fd_in=%d fd_out=%d,chroot_dir=%s",
+ 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,
+ child_info_table[num_childs].chroot_dir
+ );
+
+ if (child_info_table[num_childs].uid == 0 ||
+ child_info_table[num_childs].gid == 0)
+ {
+ _DBG("Assigning root user/group to a child.",0);
+ }
+ 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, const char *chroot_dir)
+{
+ _DBG("%d: %s.%s %s", num_childs, user_name, group_name, chroot_dir);
+ return child_add ( CHILD_TYPE_PROCESSOR, user_name, group_name, chroot_dir );
+}
+
+/* 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, const char *chroot_dir)
+{
+ _DBG("%d: %s.%s %s", num_childs, user_name, group_name, chroot_dir);
+ return child_add ( CHILD_TYPE_MULTIPLEXER, user_name, group_name, chroot_dir );
+}
+
+/* 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("MaxThreadsPerChild", cf_MaxThreadsPerChild, NULL, RSRC_CONF,
+ "Maximum number of threads per child"),
+AP_INIT_TAKE23("Multiplexer", cf_Multiplexer, NULL, RSRC_CONF,
+ "Specify an Multiplexer Child configuration."),
+AP_INIT_TAKE23("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 -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm_default.h httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm_default.h
--- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm_default.h 1970-01-01 01:00:00.000000000 +0100
+++ httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm_default.h 2005-12-12 11:37:00.910963000 +0100
@@ -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
+ * .
+ *
+ * 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 -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm.h httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm.h
--- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm.h 1970-01-01 01:00:00.000000000 +0100
+++ httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm.h 2005-12-12 11:37:00.910963000 +0100
@@ -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
+ * .
+ *
+ * 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 -urN httpd-2.2.0.org/srclib/apr/network_io/unix/sockets.c httpd-2.2.0/srclib/apr/network_io/unix/sockets.c
--- httpd-2.2.0.org/srclib/apr/network_io/unix/sockets.c 2005-09-09 10:21:17.000000000 +0200
+++ httpd-2.2.0/srclib/apr/network_io/unix/sockets.c 2005-12-12 11:37:00.910963000 +0100
@@ -416,7 +416,36 @@
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
+
+ */
+ /* 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;