1 diff -urN httpd-2.2.0.org/server/mpm/config.m4 httpd-2.2.0/server/mpm/config.m4
2 --- httpd-2.2.0.org/server/mpm/config.m4 2005-10-30 18:05:26.000000000 +0100
3 +++ httpd-2.2.0/server/mpm/config.m4 2005-12-12 11:37:00.900963000 +0100
5 AC_MSG_CHECKING(which MPM to use)
7 APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use.
8 - MPM={beos|event|worker|prefork|mpmt_os2}),[
9 + MPM={beos|event|worker|prefork|mpmt_os2|metuxmpm}),[
12 if test "x$APACHE_MPM" = "x"; then
17 - if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "event" ; then
18 + if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "metuxmpm"; then
24 ap_mpm_is_experimental ()
26 - if test "$apache_cv_mpm" = "event" ; then
27 + if test "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "metuxmpm"; then
31 diff -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/config5.m4 httpd-2.2.0/server/mpm/experimental/metuxmpm/config5.m4
32 --- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/config5.m4 1970-01-01 01:00:00.000000000 +0100
33 +++ httpd-2.2.0/server/mpm/experimental/metuxmpm/config5.m4 2005-12-12 11:37:00.900963000 +0100
35 +dnl ## XXX - Need a more thorough check of the proper flags to use
37 +if test "$MPM_NAME" = "metuxmpm" ; then
38 + AC_CHECK_FUNCS(pthread_kill)
39 + APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile)
41 diff -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/Makefile.in httpd-2.2.0/server/mpm/experimental/metuxmpm/Makefile.in
42 --- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/Makefile.in 1970-01-01 01:00:00.000000000 +0100
43 +++ httpd-2.2.0/server/mpm/experimental/metuxmpm/Makefile.in 2005-12-12 11:37:00.900963000 +0100
46 +LTLIBRARY_NAME = libmetuxmpm.la
47 +LTLIBRARY_SOURCES = metuxmpm.c
49 +include $(top_srcdir)/build/ltlib.mk
50 diff -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/metuxmpm.c httpd-2.2.0/server/mpm/experimental/metuxmpm/metuxmpm.c
51 --- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/metuxmpm.c 1970-01-01 01:00:00.000000000 +0100
52 +++ httpd-2.2.0/server/mpm/experimental/metuxmpm/metuxmpm.c 2005-12-12 11:35:35.000000000 +0100
54 +/* ====================================================================
55 + * The Apache Software License, Version 1.1
57 + * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
60 + * Redistribution and use in source and binary forms, with or without
61 + * modification, are permitted provided that the following conditions
64 + * 1. Redistributions of source code must retain the above copyright
65 + * notice, this list of conditions and the following disclaimer.
67 + * 2. Redistributions in binary form must reproduce the above copyright
68 + * notice, this list of conditions and the following disclaimer in
69 + * the documentation and/or other materials provided with the
72 + * 3. The end-user documentation included with the redistribution,
73 + * if any, must include the following acknowledgment:
74 + * "This product includes software developed by the
75 + * Apache Software Foundation (http://www.apache.org/)."
76 + * Alternately, this acknowledgment may appear in the software itself,
77 + * if and wherever such third-party acknowledgments normally appear.
79 + * 4. The names "Apache" and "Apache Software Foundation" must
80 + * not be used to endorse or promote products derived from this
81 + * software without prior written permission. For written
82 + * permission, please contact apache@apache.org.
84 + * 5. Products derived from this software may not be called "Apache",
85 + * nor may "Apache" appear in their name, without prior written
86 + * permission of the Apache Software Foundation.
88 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
89 + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
90 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
91 + * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
92 + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
93 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
94 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
95 + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
96 + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
97 + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
98 + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
100 + * ====================================================================
102 + * This software consists of voluntary contributions made by many
103 + * individuals on behalf of the Apache Software Foundation. For more
104 + * information on the Apache Software Foundation, please see
105 + * <http://www.apache.org/>.
107 + * Portions of this software are based upon public domain software
108 + * originally written at the National Center for Supercomputing Applications,
109 + * University of Illinois, Urbana-Champaign.
113 + + replace pipe_of_death by an generic command interface
114 + + also use this interface for child->child communications
115 + + add support for runtime configuration over this if.
116 + + what to do w/ unassigned vhosts ? who should handle them ?
117 + perhaps we shoudda add an DefaultProcessor option ?
118 + + test, test, test, and test, especially under high load.
119 + + what about persistent links w/ changing vhost ?
120 + should the client then give it back to the multiplexer ?
121 + + add timeouts in multiplexer to prevent local dos attacks
122 + + think about possible vulnarabilities. note that the vhost's user
123 + could ptrace the processor child and play nice games with it.
126 +/* -- build configuration -- manly for debugging -- */
128 +/* #define MPM_METUXMPM_DEBUG */
130 +#define MPM_THREAD_ACCEPT_LOCK
132 +#include "apr_hash.h"
133 +#include "apr_strings.h"
134 +#include "apr_pools.h"
135 +#include "apr_portable.h"
136 +#include "apr_file_io.h"
137 +#include "apr_signal.h"
139 +#define APR_WANT_IOVEC
140 +#include "apr_want.h"
142 +#if APR_HAVE_UNISTD_H
145 +#if APR_HAVE_SYS_SOCKET_H
146 +#include <sys/socket.h>
149 +#if !APR_HAS_THREADS
150 +#error The metuxmpm MPM requires APR threads, but they are unavailable.
153 +#define CORE_PRIVATE
155 +#include "ap_config.h"
157 +#include "http_main.h"
158 +#include "http_log.h"
159 +#include "http_config.h" /* for read_config */
160 +#include "http_core.h" /* for get_remote_host */
161 +#include "http_protocol.h"
162 +#include "http_connection.h"
165 +#include "mpm_common.h"
166 +#include "ap_listen.h"
167 +#include "mpm_default.h"
169 +#include "scoreboard.h"
170 +#include "util_filter.h"
171 +#include "apr_poll.h"
173 +#include "util_ebcdic.h"
178 +#ifdef HAVE_SYS_POLL_H
179 +#include <sys/poll.h>
182 +/* ### should be APR-ized */
185 +#include <sys/stat.h>
188 +#ifdef HAVE_SYS_PROCESSOR_H
189 +#include <sys/processor.h> /* for bindprocessor() */
192 +#ifdef MPM_METUXMPM_DEBUG
193 +# define _DBG(text,par...) \
194 + ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, \
195 + "(metuxmpm: pid=%d uid=%d) %s(): " text, \
196 + getpid(), getuid(), __FUNCTION__, ##par, 0)
198 +# define _TRACE_CALL(text,par...) _DBG("calling " text, ##par)
199 +# define _TRACE_RET(text,par...) _DBG("returned from " text, ##par)
201 +# define _DBG(text,par...)
202 +# define _TRACE_RET(text,par...)
203 +# define _TRACE_CALL(text,par...)
204 +#endif /* MPM_METUXMPM_DEBUG */
206 +/* char of death - for signalling children to die */
207 +#define AP_metuxmpm_CHAR_OF_DEATH '!'
209 +#define metuxmpm_SERVER_CONF(cf) \
210 + ((metuxmpm_server_conf *) ap_get_module_config(cf,&mpm_metuxmpm_module))
214 + * Define some magic numbers that we use for the state of the incomming
215 + * request. These must be < 0 so they don't collide with a file descriptor.
217 +#define AP_metuxmpm_THISCHILD -1
218 +#define AP_metuxmpm_OTHERCHILD -2
220 +/* Limit on the threads per process. Clients will be locked out if more than
221 + * this * server_limit are needed.
223 + * We keep this for one reason it keeps the size of the scoreboard file small
224 + * enough that we can read the whole thing without worrying too much about
227 +#ifndef DEFAULT_THREAD_LIMIT
228 +#define DEFAULT_THREAD_LIMIT 64
231 +/* Admin can't tune ThreadLimit beyond MAX_THREAD_LIMIT. We want
232 + * some sort of compile-time limit to help catch typos.
234 +#ifndef MAX_THREAD_LIMIT
235 +#define MAX_THREAD_LIMIT 20000
238 +/* Limit on the total --- clients will be locked out if more servers than
239 + * this are needed. It is intended solely to keep the server from crashing
240 + * when things get out of hand.
242 + * We keep a hard maximum number of servers, for two reasons --- first off,
243 + * in case something goes seriously wrong, we want to stop the fork bomb
244 + * short of actually crashing the machine we're running on by filling some
245 + * kernel table. Secondly, it keeps the size of the scoreboard file small
246 + * enough that we can read the whole thing without worrying too much about
249 +#ifndef DEFAULT_SERVER_LIMIT
250 +#define DEFAULT_SERVER_LIMIT 256
253 +/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT. We want
254 + * some sort of compile-time limit to help catch typos.
256 +#ifndef MAX_SERVER_LIMIT
257 +#define MAX_SERVER_LIMIT 20000
261 + * Actual definitions of config globals
264 +static int threads_to_start = 0; /* Worker threads per child */
265 +static int min_spare_threads = 0;
266 +static int max_spare_threads = 0;
267 +static int max_threads = 0;
268 +static int server_limit = DEFAULT_SERVER_LIMIT;
269 +static int first_server_limit;
270 +static int thread_limit = DEFAULT_THREAD_LIMIT;
271 +static int first_thread_limit;
272 +static int changed_limit_at_restart;
273 +static int num_childs = 0;
274 +static int workers_may_exit = 0;
275 +static int requests_this_child;
276 +static int num_listensocks = 0;
277 +static ap_pod_t *pod;
278 +static jmp_buf jmpbuffer;
279 +static int thread_overflow_reported = 0;
281 +/* === configuration stuff === */
282 +/* the server limit is also the size of the server table */
283 +static int cf_server_limit = DEFAULT_SERVER_LIMIT;
285 +/* -- server process information -- */
290 + int input; /* The socket descriptor */
291 + int output; /* The socket descriptor */
293 + int id; /* index in child_info_table */
294 + const char *chroot_dir; /* can be null */
297 +#define CHILD_TYPE_MULTIPLEXER 1
298 +#define CHILD_TYPE_PROCESSOR 2
302 + const char *sockname; /* The base name for the socket */
303 + const char *fullsockname; /* socket base name + extension */
304 + child_info_t* child; /* The client which processes this server */
305 +} metuxmpm_server_conf;
314 +/* Tables used to determine the user and group each child process should
315 + * run as. The hash table is used to correlate a server name with a child
318 +static int child_info_table_size;
319 +static child_info_t *child_info_table;
320 +static thread_info_t *thread_info_table;
321 +struct ap_ctable *ap_child_table;
324 + * The max child slot ever assigned, preserved across restarts. Necessary
325 + * to deal with NumServers changes across AP_SIG_GRACEFUL restarts. We
326 + * use this value to optimize routines that have to scan the entire child
329 + * XXX - It might not be worth keeping this code in. There aren't very
330 + * many child processes in this MPM.
332 +int ap_max_daemons_limit = -1;
333 +int ap_threads_per_child; /* XXX not part of API! axe it! */
335 +module AP_MODULE_DECLARE_DATA mpm_metuxmpm_module;
337 +/* -- replace the pipe-of-death by an control socket -- */
338 +static apr_file_t *pipe_of_death_in = NULL;
339 +static apr_file_t *pipe_of_death_out = NULL;
340 +static apr_thread_mutex_t *pipe_of_death_mutex;
342 +/* *Non*-shared http_main globals... */
344 +server_rec *ap_server_conf;
346 +/* one_process --- debugging mode variable; can be set from the command line
347 + * with the -X flag. If set, this gets you the child_main loop running
348 + * in the process which originally started up (no detach, no make_child),
349 + * which is a pretty nice debugging environment. (You'll get a SIGHUP
350 + * early in standalone_main; just continue through. This is the server
351 + * trying to kill off any child processes which it might have lying
352 + * around --- Apache doesn't keep track of their pids, it just sends
353 + * SIGHUP to the process group, ignoring it in the root process.
354 + * Continue through and you'll be fine.).
357 +static int one_process = 0;
359 +#ifdef DEBUG_SIGSTOP
360 +int raise_sigstop_flags;
363 +static apr_pool_t *pconf; /* Pool for config stuff */
364 +static apr_pool_t *pchild; /* Pool for httpd child stuff */
365 +static apr_pool_t *thread_pool_parent; /* Parent of per-thread pools */
366 +static apr_thread_mutex_t *thread_pool_parent_mutex;
368 +static int child_num;
369 +static unsigned int my_pid; /* Linux getpid() doesn't work except in
370 + main thread. Use this instead */
372 +/* -- stack w/ free thread slot IDs */
373 +static int *worker_thread_free_ids;
374 +static apr_threadattr_t *worker_thread_attr;
376 +/* Keep track of the number of idle worker threads */
377 +static int idle_thread_count;
378 +static apr_thread_mutex_t *idle_thread_count_mutex;
380 +/* Locks for accept serialization */
381 +#ifdef NO_SERIALIZED_ACCEPT
383 +#define ACCEPT_PROC_MUTEX_INIT APR_SUCCESS
384 +#define ACCEPT_PROC_MUTEX_LOCK APR_SUCCESS
385 +#define ACCEPT_PROC_MUTEX_UNLOCK APR_SUCCESS
386 +#define ACCEPT_PROC_MUTEX_CREATE APR_SUCCESS
390 +static apr_proc_mutex_t *process_accept_mutex;
392 +#define ACCEPT_PROC_MUTEX_LOCK (apr_proc_mutex_lock(process_accept_mutex))
393 +#define ACCEPT_PROC_MUTEX_UNLOCK (apr_proc_mutex_unlock(process_accept_mutex))
394 +#define ACCEPT_PROC_MUTEX_CREATE (apr_proc_mutex_create(&process_accept_mutex,ap_lock_fname, ap_accept_lock_mech,_pconf))
395 +#define ACCEPT_PROC_MUTEX_INIT (apr_proc_mutex_child_init(&process_accept_mutex, ap_lock_fname, pchild));
397 +#endif /* NO_SERIALIZED_ACCEPT */
399 +static apr_thread_mutex_t *thread_accept_mutex;
401 +#ifdef MPM_metuxmpm_THREAD_ACCEPT_LOCK
403 +#define THREAD_ACCEPT_LOCK \
404 + _DBG("locking thread_accept_mutex",0); \
405 + apr_thread_mutex_lock(thread_accept_mutex); \
406 + _DBG("got thread_accept_mutex locked",0);
408 +#define THREAD_ACCEPT_UNLOCK \
409 + _DBG("unlocking thread_accept_mutex",0); \
410 + apr_thread_mutex_unlock(thread_accept_mutex); \
411 + _DBG("got thread_accept_mutex unlocked",0);
414 +#define THREAD_ACCEPT_LOCK \
415 + _DBG("omitted locking thread_accept_mutex",0);
417 +#define THREAD_ACCEPT_UNLOCK \
418 + _DBG("omitted unlocking thread_accept_mutex",0);
423 +static apr_pollfd_t *find_poll_sock(apr_pollfd_t *aprset, apr_socket_t *sock)
425 + apr_pollfd_t *curr = aprset;
427 + while (curr->desc.s != sock) {
428 + if (curr->desc_type == APR_POLL_LASTDESC) {
437 +static apr_status_t apr_poll_revents_get(apr_int16_t *event, apr_socket_t *sock, apr_pollfd_t *aprset)
439 + apr_pollfd_t *curr = find_poll_sock(aprset, sock);
440 + if (curr == NULL) {
441 + return APR_NOTFOUND;
444 + (*event) = curr->rtnevents;
445 + return APR_SUCCESS;
449 +/* == Keep track of the number of worker threads currently active == */
450 +static int worker_thread_count = 0;
451 +static apr_thread_mutex_t *worker_thread_count_mutex;
453 +static inline int worker_thread_count_get ()
456 + apr_thread_mutex_lock(worker_thread_count_mutex);
457 + x = worker_thread_count;
458 + apr_thread_mutex_unlock(worker_thread_count_mutex);
459 + _DBG("worker_thread_count=%d", x);
463 +static inline int worker_thread_count_add ( int x )
466 + apr_thread_mutex_lock(worker_thread_count_mutex);
467 + worker_thread_count += x;
468 + y = worker_thread_count;
469 + apr_thread_mutex_unlock(worker_thread_count_mutex);
470 + _DBG("worker_thread_count=%d (+%d)", y, x);
474 +/* ------------------------------------------------------------------- */
476 +AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
478 + switch(query_code){
479 + case AP_MPMQ_MAX_DAEMON_USED:
480 + *result = ap_max_daemons_limit;
481 + return APR_SUCCESS;
482 + case AP_MPMQ_IS_THREADED:
483 + *result = AP_MPMQ_DYNAMIC;
484 + return APR_SUCCESS;
485 + case AP_MPMQ_IS_FORKED:
486 + *result = AP_MPMQ_STATIC;
487 + return APR_SUCCESS;
488 + case AP_MPMQ_HARD_LIMIT_DAEMONS:
489 + *result = cf_server_limit;
490 + return APR_SUCCESS;
491 + case AP_MPMQ_HARD_LIMIT_THREADS:
492 + *result = thread_limit;
493 + return APR_SUCCESS;
494 + case AP_MPMQ_MAX_THREADS:
495 + *result = max_threads;
496 + return APR_SUCCESS;
497 + case AP_MPMQ_MIN_SPARE_DAEMONS:
499 + return APR_SUCCESS;
500 + case AP_MPMQ_MIN_SPARE_THREADS:
501 + *result = min_spare_threads;
502 + return APR_SUCCESS;
503 + case AP_MPMQ_MAX_SPARE_DAEMONS:
505 + return APR_SUCCESS;
506 + case AP_MPMQ_MAX_SPARE_THREADS:
507 + *result = max_spare_threads;
508 + return APR_SUCCESS;
509 + case AP_MPMQ_MAX_REQUESTS_DAEMON:
510 + *result = ap_max_requests_per_child;
511 + return APR_SUCCESS;
512 + case AP_MPMQ_MAX_DAEMONS:
513 + *result = num_childs;
514 + return APR_SUCCESS;
516 + return APR_ENOTIMPL;
519 +/* a clean exit from a child with proper cleanup */
520 +static inline int clean_child_exit(int code)
522 + if (pchild) apr_pool_destroy(pchild);
526 +/* handle all varieties of core dumping signals */
527 +static void sig_coredump(int sig)
529 + chdir(ap_coredump_dir);
530 + apr_signal(sig, SIG_DFL);
531 + kill(getpid(), sig);
532 + /* At this point we've got sig blocked, because we're still inside
533 + * the signal handler. When we leave the signal handler it will
534 + * be unblocked, and we'll take the signal... and coredump or whatever
535 + * is appropriate for this particular Unix. In addition the parent
536 + * will see the real signal we received -- whereas if we called
537 + * abort() here, the parent would only see SIGABRT.
541 +static void just_die(int sig)
543 + clean_child_exit(0);
546 +/*****************************************************************
547 + * Connection structures and accounting...
550 +/* volatile just in case */
551 +static int volatile shutdown_pending;
552 +static int volatile restart_pending;
553 +static int volatile is_graceful;
554 +static int volatile child_fatal;
555 +/* we don't currently track ap_my_generation, but mod_status
556 + * references it so it must be defined */
557 +ap_generation_t volatile ap_my_generation=0;
560 + * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
561 + * functions to initiate shutdown or restart without relying on signals.
562 + * Previously this was initiated in sig_term() and restart() signal handlers,
563 + * but we want to be able to start a shutdown/restart from other sources --
564 + * e.g. on Win32, from the service manager. Now the service manager can
565 + * call ap_start_shutdown() or ap_start_restart() as appropiate. Note that
566 + * these functions can also be called by the child processes, since global
567 + * variables are no longer used to pass on the required action to the parent.
569 + * These should only be called from the parent process itself, since the
570 + * parent process will use the shutdown_pending and restart_pending variables
571 + * to determine whether to shutdown or restart. The child process should
572 + * call signal_parent() directly to tell the parent to die -- this will
573 + * cause neither of those variable to be set, which the parent will
574 + * assume means something serious is wrong (which it will be, for the
575 + * child to force an exit) and so do an exit anyway.
578 +static void ap_start_shutdown(void)
580 + if (shutdown_pending == 1)
582 + /* Um, is this _probably_ not an error, if the user has
583 + * tried to do a shutdown twice quickly, so we won't
584 + * worry about reporting it.
588 + shutdown_pending = 1;
591 +/* do a graceful restart if graceful == 1 */
592 +static void ap_start_restart(int graceful)
594 + if (restart_pending == 1)
596 + /* Probably not an error - don't bother reporting it */
599 + restart_pending = 1;
600 + is_graceful = graceful;
603 +static void sig_term(int sig)
605 + ap_start_shutdown();
608 +static void restart(int sig)
610 + ap_start_restart(sig == AP_SIG_GRACEFUL);
613 +static void set_signals(void)
615 +#ifndef NO_USE_SIGACTION
616 + struct sigaction sa;
618 + sigemptyset(&sa.sa_mask);
621 + if (!one_process) {
622 + sa.sa_handler = sig_coredump;
623 +#if defined(SA_ONESHOT)
624 + sa.sa_flags = SA_ONESHOT;
625 +#elif defined(SA_RESETHAND)
626 + sa.sa_flags = SA_RESETHAND;
628 + if (sigaction(SIGSEGV, &sa, NULL) < 0)
629 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
630 + "sigaction(SIGSEGV)");
632 + if (sigaction(SIGBUS, &sa, NULL) < 0)
633 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
634 + "sigaction(SIGBUS)");
637 + if (sigaction(SIGABORT, &sa, NULL) < 0)
638 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
639 + "sigaction(SIGABORT)");
642 + if (sigaction(SIGABRT, &sa, NULL) < 0)
643 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
644 + "sigaction(SIGABRT)");
647 + if (sigaction(SIGILL, &sa, NULL) < 0)
648 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
649 + "sigaction(SIGILL)");
653 + sa.sa_handler = sig_term;
654 + if (sigaction(SIGTERM, &sa, NULL) < 0)
655 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
656 + "sigaction(SIGTERM)");
658 + if (sigaction(SIGINT, &sa, NULL) < 0)
659 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
660 + "sigaction(SIGINT)");
663 + sa.sa_handler = SIG_DFL;
664 + if (sigaction(SIGXCPU, &sa, NULL) < 0)
665 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
666 + "sigaction(SIGXCPU)");
669 + sa.sa_handler = SIG_DFL;
670 + if (sigaction(SIGXFSZ, &sa, NULL) < 0)
671 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
672 + "sigaction(SIGXFSZ)");
675 + sa.sa_handler = SIG_IGN;
676 + if (sigaction(SIGPIPE, &sa, NULL) < 0)
677 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
678 + "sigaction(SIGPIPE)");
681 + /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy
682 + * processing one */
683 + sigaddset(&sa.sa_mask, SIGHUP);
684 + sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
685 + sa.sa_handler = restart;
686 + if (sigaction(SIGHUP, &sa, NULL) < 0)
687 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
688 + "sigaction(SIGHUP)");
689 + if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
690 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
691 + "sigaction(" AP_SIG_GRACEFUL_STRING ")");
695 + apr_signal(SIGSEGV, sig_coredump);
697 + apr_signal(SIGBUS, sig_coredump);
700 + apr_signal(SIGABORT, sig_coredump);
701 +#endif /* SIGABORT */
703 + apr_signal(SIGABRT, sig_coredump);
704 +#endif /* SIGABRT */
706 + apr_signal(SIGILL, sig_coredump);
709 + apr_signal(SIGXCPU, SIG_DFL);
710 +#endif /* SIGXCPU */
712 + apr_signal(SIGXFSZ, SIG_DFL);
713 +#endif /* SIGXFSZ */
716 + apr_signal(SIGTERM, sig_term);
718 + apr_signal(SIGHUP, restart);
720 +#ifdef AP_SIG_GRACEFUL
721 + apr_signal(AP_SIG_GRACEFUL, restart);
722 +#endif /* AP_SIG_GRACEFUL */
724 + apr_signal(SIGPIPE, SIG_IGN);
725 +#endif /* SIGPIPE */
730 +/*****************************************************************
731 + * Here follows a long bunch of generic server bookkeeping stuff...
734 +int ap_graceful_stop_signalled(void)
736 + /* XXX - Does this really work? - Manoj */
737 + return is_graceful;
740 +/*****************************************************************
741 + * Child process main loop.
744 +static void process_socket(apr_pool_t *p, apr_socket_t *sock, long conn_id,
745 + apr_bucket_alloc_t *bucket_alloc)
747 + conn_rec *current_conn;
750 + int thread_num = conn_id % thread_limit;
751 + ap_sb_handle_t *sbh;
753 + if ((rv = apr_os_sock_get(&sock_fd, sock)) != APR_SUCCESS)
755 + ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL, "apr_os_sock_get");
758 + _DBG("thread_num=%d sock=%ld sock_fd=%d\n", thread_num, sock, sock_fd);
760 + switch (child_info_table[child_num].type)
762 + case CHILD_TYPE_MULTIPLEXER:
763 + _DBG("type=MULTIPLEXER %d",child_num);
765 + case CHILD_TYPE_PROCESSOR:
766 + _DBG("type=PROCESSOR %d",child_num);
769 + _DBG("type UNKNOWN! %d",child_num);
772 + if (sock_fd >= FD_SETSIZE)
774 + ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL,
775 + "new file descriptor %d is too large; you probably need "
776 + "to rebuild Apache with a larger FD_SETSIZE "
778 + sock_fd, FD_SETSIZE);
779 + apr_socket_close(sock);
780 + _DBG("thread_num=%d: exiting with error", thread_num);
784 + if (thread_info_table[thread_num].sock_fd < 0)
786 + ap_sock_disable_nagle(sock);
789 + ap_create_sb_handle(&sbh, p, conn_id / thread_limit, thread_num);
790 + _TRACE_CALL("ap_run_create_connection() [thread_num=%d]", thread_num);
791 + current_conn = ap_run_create_connection(p, ap_server_conf, sock, conn_id,
792 + sbh, bucket_alloc);
793 + _TRACE_RET("ap_run_create_connection() [thread_num=%d]", thread_num);
796 + _TRACE_CALL("ap_process_connection() [thread_num=%d]", thread_num);
797 + ap_process_connection(current_conn, sock);
798 + _TRACE_RET("ap_process_connection() [thread_num=%d]", thread_num);
799 + _TRACE_CALL("ap_lingering_close() [thread_num=%d]", thread_num);
800 + ap_lingering_close(current_conn);
801 + _TRACE_RET("ap_lingering_close() [thread_num=%d]", thread_num);
805 +static metuxmpm_process_connection(conn_rec *conn)
807 + ap_filter_t *filter;
808 + apr_bucket_brigade *bb;
811 + _DBG("function entered",0);
813 + /* -- fetch our sockets from the pool -- */
814 + apr_pool_userdata_get((void **)&bb, "metuxmpm_SOCKETS", conn->pool);
817 + /* -- find the 'core' filter and give the socket data to it -- */
818 + for (filter = conn->output_filters; filter != NULL; filter = filter->next)
820 + if (!strcmp(filter->frec->name, "core")) break;
822 + if (filter != NULL)
825 + net->in_ctx = apr_palloc(conn->pool, sizeof(*net->in_ctx));
826 + net->in_ctx->b = bb;
829 + _DBG("leaving (DECLINED)", 0);
834 +static void *worker_thread_proc(apr_thread_t *, void *);
836 +/* Starts a thread as long as we're below max_threads */
837 +static int start_thread(void)
839 + apr_thread_t *thread;
843 + cnt = worker_thread_count_get ();
845 + _DBG("thread count currently: %d", cnt);
847 + if (cnt < max_threads - 1)
849 + _TRACE_CALL("apr_thread_create()",0);
850 + rc = apr_thread_create(&thread, worker_thread_attr, worker_thread_proc,
851 + &worker_thread_free_ids[worker_thread_count], pchild);
852 + _TRACE_RET("apr_thread_create()",0);
853 + if (rc != APR_SUCCESS)
855 + ap_log_error(APLOG_MARK, APLOG_ALERT, rc, ap_server_conf,
856 + "apr_thread_create: unable to create worker thread");
857 + /* In case system resources are maxxed out, we don't want
858 + Apache running away with the CPU trying to fork over and
859 + over and over again if we exit. */
861 + workers_may_exit = 1;
862 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
865 + worker_thread_count_add ( 1 );
866 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
871 + /* we already have too many threads running */
872 + _DBG("too many running threads. aborting",0);
873 + if (!thread_overflow_reported)
875 + ap_log_error(APLOG_MARK, APLOG_ERR, 0,
877 + "server reached MaxThreadsPerChild setting, "
878 + "consider raising the MaxThreadsPerChild or "
879 + "NumServers settings");
880 + thread_overflow_reported = 1;
882 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
886 +/* Sets workers_may_exit if we received a character on the pipe_of_death */
887 +static apr_status_t check_pipe_of_death
895 + char pipe_read_char;
898 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
900 + if (workers_may_exit) return APR_SUCCESS;
902 + apr_thread_mutex_lock(pipe_of_death_mutex);
903 + ret = apr_socket_recv(lr->sd, &pipe_read_char, &n);
904 + if (APR_STATUS_IS_EAGAIN(ret))
906 + /* It lost the lottery. It must continue to suffer
907 + * through a life of servitude. */
911 + if (pipe_read_char != AP_metuxmpm_CHAR_OF_DEATH)
913 + _DBG("got wrong char %c", pipe_read_char);
914 + return APR_SUCCESS;
916 + /* It won the lottery (or something else is very
917 + * wrong). Embrace death with open arms. */
918 + workers_may_exit = 1;
919 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
921 + apr_thread_mutex_unlock(pipe_of_death_mutex);
922 + return APR_SUCCESS;
925 +static apr_status_t receive_from_multiplexer
927 + void **trans_sock, /* will be filled out w/ the received socket */
928 + ap_listen_rec *lr, /* listener to receive from */
929 + apr_pool_t *ptrans /* transaction wide pool */
933 + struct cmsghdr *cmsg;
934 + char headers[HUGE_STRING_LEN];
936 + apr_size_t bodypart_len;
937 + struct iovec iov[2];
939 + apr_os_sock_t ctrl_sock_fd;
940 + apr_os_sock_t trans_sock_fd;
942 + /* -- bucket's, brigades and their allocators */
943 + apr_bucket_alloc_t *alloc = apr_bucket_alloc_create(ptrans);
944 + apr_bucket_brigade *bb = apr_brigade_create(ptrans, alloc);
945 + apr_bucket *bucket;
947 + /* prepare the buffers for receiving data from remote side */
948 + iov[0].iov_base = &bodypart_len;
949 + iov[0].iov_len = sizeof(bodypart_len);
950 + iov[1].iov_base = headers;
951 + iov[1].iov_len = HUGE_STRING_LEN;
953 + cmsg = apr_palloc(ptrans, sizeof(*cmsg) + sizeof(trans_sock_fd));
954 + cmsg->cmsg_len = sizeof(*cmsg) + sizeof(trans_sock_fd);
956 + msg.msg_name = NULL;
957 + msg.msg_namelen = 0;
959 + msg.msg_iovlen = 2;
960 + msg.msg_control = cmsg;
961 + msg.msg_controllen = cmsg->cmsg_len;
963 + /* -- receive data from socket -- */
964 + apr_os_sock_get(&ctrl_sock_fd, lr->sd);
965 + _DBG("receiving from sock_fd=%d", ctrl_sock_fd);
966 + ret = recvmsg(ctrl_sock_fd, &msg, 0);
968 + /* -- extract socket from the cmsg -- */
969 + memcpy(&trans_sock_fd, CMSG_DATA(cmsg), sizeof(trans_sock_fd));
970 + apr_os_sock_put((apr_socket_t **)trans_sock, &trans_sock_fd, ptrans);
971 + apr_os_sock_get(&fd_tmp, *trans_sock);
974 + _DBG("trans_sock=%ld fdx=%d sock_fd=%d",
975 + *trans_sock, trans_sock_fd, fd_tmp);
977 + _DBG("headers=\"%s\"", headers);
979 + /* -- store received data into an brigade and add
980 + it to the current transaction's pool -- */
981 + bucket = apr_bucket_eos_create(alloc);
982 + APR_BRIGADE_INSERT_HEAD(bb, bucket);
983 + bucket = apr_bucket_socket_create(*trans_sock, alloc);
984 + APR_BRIGADE_INSERT_HEAD(bb, bucket);
986 + /* Receive the bodypart (if there is one) and insert it in the brigade */
987 + if (bodypart_len) {
988 + _DBG("Receiving the bodypart (bodypart_len=%d)", bodypart_len);
989 + bodypart = apr_palloc(ptrans, bodypart_len);
990 + ret = recv(ctrl_sock_fd, bodypart, HUGE_STRING_LEN, 0);
992 + _DBG("bodypart=\"%s\"", bodypart);
993 + bucket = apr_bucket_heap_create(bodypart,
994 + bodypart_len, NULL, alloc);
995 + APR_BRIGADE_INSERT_HEAD(bb, bucket);
997 + _DBG("There is no bodypart",0);
1000 + bucket = apr_bucket_heap_create(headers,
1001 + strlen(headers), NULL, alloc);
1002 + /* DS: I really don't like that strlen here */
1004 + APR_BRIGADE_INSERT_HEAD(bb, bucket);
1006 + apr_pool_userdata_set(bb, "metuxmpm_SOCKETS", NULL, ptrans);
1007 + _DBG("returning 0",0);
1011 +/* idle_thread_count should be incremented before starting a worker_thread */
1013 +static void *worker_thread_proc(apr_thread_t *thd, void *arg)
1015 + apr_socket_t *sock;
1016 + apr_pool_t *tpool; /* Pool for this thread */
1017 + apr_pool_t *ptrans; /* Pool for per-transaction stuff */
1019 + int thread_num = *((int *) arg);
1020 + long conn_id = child_num * thread_limit + thread_num;
1021 + apr_pollfd_t *pollset;
1023 + ap_listen_rec *lr_walk;
1026 + apr_bucket_alloc_t *bucket_alloc;
1028 + _DBG("function starting",0);
1030 + /* === allocate thread pools etc === */
1031 + apr_thread_mutex_lock(thread_pool_parent_mutex);
1032 + apr_pool_create(&tpool, thread_pool_parent);
1033 + apr_thread_mutex_unlock(thread_pool_parent_mutex);
1034 + apr_pool_create(&ptrans, tpool);
1036 + (void) ap_update_child_status_from_indexes(child_num, thread_num,
1038 + (request_rec *) NULL);
1040 + bucket_alloc = apr_bucket_alloc_create(apr_thread_pool_get(thd));
1042 + apr_thread_mutex_lock(idle_thread_count_mutex);
1043 + if (idle_thread_count < max_spare_threads)
1045 + idle_thread_count++;
1046 + _DBG("idle_thread_count: %d", idle_thread_count);
1047 + apr_thread_mutex_unlock(idle_thread_count_mutex);
1051 + _DBG("too many idle threads: %d (max %d)", idle_thread_count, max_spare_threads );
1052 + apr_thread_mutex_unlock(idle_thread_count_mutex);
1056 + while (!workers_may_exit)
1058 + apr_int16_t event;
1060 + _DBG("loop. conn_id=%d req_max=%d req_remain=%d",
1061 + conn_id, ap_max_requests_per_child, requests_this_child);
1063 + ((ap_max_requests_per_child != 0) &&
1064 + (requests_this_child < 1) && (workers_may_exit=1));
1066 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
1067 + if (workers_may_exit) goto worker_out;
1069 + (void) ap_update_child_status_from_indexes(child_num, thread_num,
1071 + (request_rec *) NULL);
1073 + THREAD_ACCEPT_LOCK;
1075 + /* -- setup pollset -- */
1076 + /* NOTE: we do _not_ do this upwards anylonger */
1077 + apr_pollset_create(&pollset, num_listensocks, tpool, 0);
1078 + apr_pollset_create(&pollset, num_listensocks, ptrans, 0);
1079 + for(lr_walk = ap_listeners; lr_walk != NULL; lr_walk = lr_walk->next)
1082 + apr_pollfd_t new_pollfd;
1083 + new_pollfd.desc_type = APR_POLL_SOCKET;
1084 + new_pollfd.reqevents = APR_POLLIN;
1085 + new_pollfd.desc.s = lr_walk->sd;
1086 + new_pollfd.client_data = lr_walk;
1087 + apr_pollset_add(pollset, &new_pollfd);
1088 + apr_os_sock_get(&fd, lr_walk->sd);
1089 + _DBG("adding fd %d to pollset", fd);
1092 + if (workers_may_exit) goto worker_out;
1093 + _TRACE_CALL("apr_poll()",0);
1094 + srv = apr_poll(pollset, num_listensocks, &n, -1);
1095 + _TRACE_RET("apr_poll()",0);
1097 + if (srv != APR_SUCCESS)
1099 + if (APR_STATUS_IS_EINTR(srv))
1101 + _DBG("apr_poll() has been interrupted", 0);
1102 + THREAD_ACCEPT_UNLOCK;
1106 + /* apr_poll() will only return errors in catastrophic
1107 + * circumstances. Let's try exiting gracefully, for now. */
1108 + ap_log_error(APLOG_MARK, APLOG_ERR, srv, (const server_rec *)
1109 + ap_server_conf, "apr_poll: (listen)");
1110 + workers_may_exit = 1;
1111 + _DBG("poll error!",0);
1112 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
1113 + THREAD_ACCEPT_UNLOCK;
1117 + /* find a listener */
1118 + _DBG("looking for an listener",0);
1119 + for (lr_walk=ap_listeners; lr_walk!=NULL; lr_walk = lr_walk->next)
1122 + apr_os_sock_get(&fd_tmp, lr_walk->sd);
1123 + _DBG(" ... trying w/ fd=%d", fd_tmp);
1124 + apr_poll_revents_get(&event, lr_walk->sd, pollset);
1125 + if (event & (APR_POLLIN))
1127 + THREAD_ACCEPT_UNLOCK;
1130 + if (event & (APR_POLLERR))
1132 + ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
1133 + "got POLLERR in line 870");
1137 + THREAD_ACCEPT_UNLOCK;
1138 + _DBG("WARN: did not find the right listener",0);
1143 + _DBG("input available ... resetting socket.",0);
1144 + sock = NULL; /* important! */
1146 + _TRACE_CALL("accept_func()",0);
1147 + rv = lr_walk->accept_func((void*)&sock, lr_walk, ptrans);
1148 + _TRACE_RET("accept_func()",0);
1150 + if (rv == APR_EGENERAL)
1152 + /* E[NM]FILE, ENOMEM, etc */
1153 + _DBG("there was some error." ,0);
1154 + workers_may_exit = 1;
1155 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
1159 + apr_thread_mutex_lock(idle_thread_count_mutex);
1160 + if (idle_thread_count > min_spare_threads)
1162 + idle_thread_count--;
1166 + if (!start_thread())
1168 + idle_thread_count--;
1171 + apr_thread_mutex_unlock(idle_thread_count_mutex);
1173 + if (!setjmp(thread_info_table[thread_num].jmpbuffer))
1175 + _DBG("marked jmpbufffer",0);
1176 + _TRACE_CALL("process_socket()",0);
1177 + process_socket(ptrans, sock, conn_id, bucket_alloc);
1178 + _TRACE_RET("process_socket()",0);
1182 + _DBG("landed from longjmp",0);
1183 + thread_info_table[thread_num].sock_fd = AP_metuxmpm_THISCHILD;
1185 + requests_this_child--;
1186 + apr_pool_clear(ptrans);
1189 + _DBG("thread loop finished",0);
1191 + _DBG("this thread's work is done ... workers_may_exit=%d",workers_may_exit);
1193 + /* == think about it == */
1194 + apr_thread_mutex_lock(idle_thread_count_mutex);
1195 + idle_thread_count--;
1196 + apr_thread_mutex_unlock(idle_thread_count_mutex);
1199 + apr_thread_mutex_lock(thread_pool_parent_mutex);
1200 + ap_update_child_status_from_indexes(child_num, thread_num, SERVER_DEAD,
1201 + (request_rec *) NULL);
1202 + apr_pool_destroy(tpool);
1203 + apr_thread_mutex_unlock(thread_pool_parent_mutex);
1205 + thread_cnt = worker_thread_count_add ( -1 );
1206 + worker_thread_free_ids[thread_cnt] = thread_num;
1209 + /* All the threads have exited, now finish the shutdown process
1210 + * by signalling the sigwait thread */
1211 + _DBG("all workers have quit. killing myself (%d) with SIGTERM", my_pid);
1212 + kill(my_pid, SIGTERM);
1216 + _DBG("this is not the time to die - %d threads are still alive", thread_cnt);
1217 + _DBG("WATCH: workers_may_exit=%d", workers_may_exit);
1220 + apr_bucket_alloc_destroy(bucket_alloc);
1221 + _DBG("leaving. good bye",0);
1227 +/* Set group privileges.
1229 + * Note that we use the username as set in the config files, rather than
1230 + * the lookup of to uid --- the same uid may have multiple passwd entries,
1231 + * with different sets of groups for each.
1234 +static int set_group_privs(uid_t uid, gid_t gid)
1240 + /* Get username if passed as a uid */
1242 + struct passwd *ent;
1244 + if ((ent = getpwuid(uid)) == NULL)
1246 + ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
1247 + "getpwuid: couldn't determine user name from uid %u, "
1248 + "you probably need to modify the User directive",
1253 + name = ent->pw_name;
1256 + * Set the GID before initgroups(), since on some platforms
1257 + * setgid() is known to zap the group list.
1259 + if (setgid(gid) == -1)
1261 + ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
1262 + "setgid: unable to set group id to Group %u",
1267 + /* Reset `groups' attributes. */
1269 + if (initgroups(name, gid) == -1)
1271 + ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
1272 + "initgroups: unable to set groups for User %s "
1273 + "and Group %u", name, (unsigned)gid);
1281 +static int metuxmpm_setup_child(int childnum)
1283 + child_info_t *ug = &child_info_table[childnum];
1285 + if (ug->uid == -1 && ug->gid == -1) {
1286 + return unixd_setup_child();
1288 + if (set_group_privs(ug->uid, ug->gid)) {
1291 + /* Only try to switch if we're running as root */
1295 + os_init_job_environment(server_conf, unixd_config.user_name,
1296 + one_process) != 0 ||
1298 + setuid(ug->uid) == -1)) {
1299 + ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
1300 + "setuid: unable to change to uid: %ld",
1307 +static int check_signal(int signum)
1309 + _DBG("signum=%d", signum);
1319 +typedef struct metuxmpm_header
1325 +/* Send a single HTTP header field to the client. Note that this function
1326 + * is used in calls to table_do(), so their interfaces are co-dependent.
1327 + * In other words, don't change this one without checking table_do in alloc.c.
1328 + * It returns true unless there was a write error of some kind.
1330 +static int metuxmpm_header_field(metuxmpm_header *h,
1331 + const char *fieldname, const char *fieldval)
1333 + apr_pstrcat(h->p, h->headers, fieldname, ": ", fieldval, CRLF, NULL);
1337 +static inline ap_listen_rec* listen_add ( apr_pool_t* pool, apr_socket_t *sock, void* accept_func )
1339 + ap_listen_rec *lr_walk, *lr_new;
1341 + _DBG("function started",0);
1342 + /* -- create an new listener for this child -- */
1343 + lr_new = apr_palloc(pool, sizeof(*lr_new));
1344 + lr_new->sd = sock;
1345 + lr_new->active = 1;
1346 + lr_new->accept_func = accept_func;
1347 + lr_new->next = NULL;
1349 + /* -- add the new listener_rec into the list -- */
1350 + /* FIXME: should we somehow lock this list ? */
1351 + if (lr_walk = ap_listeners)
1353 + while (lr_walk->next) lr_walk = lr_walk->next;
1354 + lr_walk->next = lr_new;
1358 + ap_listeners = lr_walk = lr_new;
1360 + num_listensocks++;
1364 +static inline void listen_clear ()
1366 + ap_listen_rec *lr_walk;
1368 + _DBG("function started",0);
1370 + /* FIXME: should we somehow lock this list ? */
1371 + while (ap_listeners)
1373 + lr_walk = ap_listeners->next;
1374 + apr_socket_close(ap_listeners->sd);
1375 + ap_listeners = lr_walk;
1377 + num_listensocks=0;
1380 +/* -- main routine of an child process -- */
1381 +static void child_main(int child_num_arg)
1385 + apr_socket_t *sock = NULL;
1387 + my_pid = getpid();
1388 + child_num = child_num_arg;
1390 + _DBG("sock_fd_in=%d sock_fd_out=%d", child_info_table[child_num].input, child_info_table[child_num].output );
1392 + /* -- allocate an new pool for us -- */
1393 + apr_pool_create(&pchild, pconf);
1394 + if (child_info_table[child_num].chroot_dir){
1395 + _DBG("chroot to %s",child_info_table[child_num].chroot_dir);
1396 + if (chroot(child_info_table[child_num].chroot_dir)){
1397 + _DBG("chroot failure %s",child_info_table[child_num].chroot_dir);
1402 + switch (child_info_table[child_num].type)
1404 + case CHILD_TYPE_MULTIPLEXER:
1405 + _DBG("MULTIPLEXER %d", child_num);
1408 + case CHILD_TYPE_PROCESSOR:
1409 + _DBG("PROCESSOR %d", child_num);
1411 + /* -- create new listener to receive from multiplexer -- */
1412 + apr_os_sock_put(&sock, &child_info_table[child_num].input, pconf);
1414 + listen_add ( pconf, sock, receive_from_multiplexer );
1418 + _DBG("unspecified child type for %d sleeping a while ...", child_num);
1422 + /*stuff to do before we switch id's, so we have permissions.*/
1424 + /* -- init child process (uid switching etc) -- */
1425 + (metuxmpm_setup_child(child_num) && clean_child_exit(APEXIT_CHILDFATAL));
1426 + ap_run_child_init(pchild, ap_server_conf);
1428 + /*done with init critical section */
1430 + apr_setup_signal_thread();
1432 + requests_this_child = ap_max_requests_per_child;
1434 + /* Setup worker threads */
1436 + _DBG("setting up worker threads ... " ,0);
1437 + ((threads_to_start > max_threads) && (threads_to_start = max_threads));
1438 + idle_thread_count = threads_to_start;
1439 + workers_may_exit = 0;
1440 + worker_thread_count = 0;
1441 + worker_thread_free_ids = (int *)apr_pcalloc(pchild, thread_limit * sizeof(int));
1442 + for (i = 0; i < max_threads; i++)
1444 + worker_thread_free_ids[i] = i;
1446 + apr_pool_create(&thread_pool_parent, pchild);
1447 + apr_thread_mutex_create(&thread_pool_parent_mutex,
1448 + APR_THREAD_MUTEX_DEFAULT, pchild);
1449 + apr_thread_mutex_create(&idle_thread_count_mutex,
1450 + APR_THREAD_MUTEX_DEFAULT, pchild);
1451 + apr_thread_mutex_create(&worker_thread_count_mutex,
1452 + APR_THREAD_MUTEX_DEFAULT, pchild);
1453 + apr_thread_mutex_create(&pipe_of_death_mutex,
1454 + APR_THREAD_MUTEX_DEFAULT, pchild);
1455 + apr_thread_mutex_create(&thread_accept_mutex,
1456 + APR_THREAD_MUTEX_DEFAULT, pchild);
1458 + apr_threadattr_create(&worker_thread_attr, pchild);
1459 + apr_threadattr_detach_set(worker_thread_attr, 1);
1461 + /* We are creating worker threads right now */
1462 + for (i=0; i < threads_to_start; i++)
1464 + /* start_thread shouldn't fail here */
1465 + _TRACE_CALL("start_thread()",0);
1466 + if (!start_thread()) break;
1467 + _TRACE_RET("start_thread()",0);
1470 + _TRACE_CALL("apr_signal_thread()",0);
1471 + apr_signal_thread(check_signal);
1472 + _TRACE_RET("apr_signal_thread",0);
1475 +static int make_child(server_rec *s, int slot)
1479 + switch (child_info_table[slot].type)
1481 + case CHILD_TYPE_MULTIPLEXER: break;
1482 + case CHILD_TYPE_PROCESSOR: break;
1484 + _DBG("no valid client in slot %d", slot);
1489 + if (slot + 1 > ap_max_daemons_limit)
1491 + ap_max_daemons_limit = slot + 1;
1494 + (void) ap_update_child_status_from_indexes(slot, 0, SERVER_STARTING,
1495 + (request_rec *) NULL);
1497 + if ((pid = fork()) == -1)
1499 + ap_log_error(APLOG_MARK, APLOG_ERR, errno, s,
1500 + "fork: Unable to fork new process");
1501 + /* In case system resources are maxxed out, we don't want
1502 + * Apache running away with the CPU trying to fork over and
1503 + * over and over again. */
1511 +#ifdef HAVE_BINDPROCESSOR
1512 + /* By default, AIX binds to a single processor. This bit unbinds
1513 + * children which will then bind to another CPU.
1515 + int status = bindprocessor(BINDPROCESS, (int)getpid(),
1516 + PROCESSOR_CLASS_ANY);
1517 + if (status != OK) {
1518 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno,
1519 + ap_server_conf, "processor unbind failed %d", status);
1523 + RAISE_SIGSTOP(MAKE_CHILD);
1525 + /* XXX - For an unthreaded server, a signal handler will be necessary
1526 + * apr_signal(SIGTERM, just_die);
1529 + clean_child_exit(0);
1532 + ap_scoreboard_image->parent[slot].pid = pid;
1534 + ap_child_table[slot].pid = pid;
1535 + ap_child_table[slot].status = SERVER_ALIVE;
1540 +/* start up a bunch of children */
1541 +static int startup_children(int number_to_start)
1545 + for (i = 0; number_to_start && i < num_childs; ++i)
1547 + if (ap_child_table[i].pid) continue;
1548 + if (make_child(ap_server_conf, i) < 0) break;
1549 + --number_to_start;
1551 + return number_to_start;
1556 + * spawn_rate is the number of children that will be spawned on the
1557 + * next maintenance cycle if there aren't enough servers. It is
1558 + * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
1559 + * without the need to spawn.
1561 +static int spawn_rate = 1;
1562 +#ifndef MAX_SPAWN_RATE
1563 +#define MAX_SPAWN_RATE (32)
1565 +static int hold_off_on_exponential_spawning;
1567 +static void perform_child_maintenance(void)
1571 + int free_slots[MAX_SPAWN_RATE];
1572 + int last_non_dead = -1;
1574 + /* initialize the free_list */
1577 + for (i = 0; i < num_childs; ++i)
1579 + if (ap_child_table[i].pid == 0)
1581 + if (free_length < spawn_rate)
1583 + free_slots[free_length] = i;
1589 + last_non_dead = i;
1592 + if (i >= ap_max_daemons_limit && free_length >= spawn_rate)
1597 + ap_max_daemons_limit = last_non_dead + 1;
1599 + if (free_length > 0)
1601 + for (i = 0; i < free_length; ++i)
1603 + _TRACE_CALL("make_child()",0);
1604 + make_child(ap_server_conf, free_slots[i]);
1605 + _TRACE_RET("make_child()",0);
1607 + /* the next time around we want to spawn twice as many if this
1608 + * wasn't good enough, but not if we've just done a graceful
1610 + if (hold_off_on_exponential_spawning)
1612 + --hold_off_on_exponential_spawning;
1614 + else if (spawn_rate < MAX_SPAWN_RATE)
1625 +static void server_main_loop(int remaining_children_to_start)
1627 + apr_exit_why_e exitwhy;
1634 + while (!restart_pending && !shutdown_pending)
1636 + ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
1638 + if (pid.pid != -1)
1640 + if (ap_process_child_status(&pid, exitwhy, status)==APEXIT_CHILDFATAL)
1642 + _DBG("shutdown pending ...",0);
1643 + shutdown_pending = 1;
1647 + /* non-fatal death... note that it's gone in the child table and
1648 + * clean out the status table. */
1649 + _DBG("child has #%d died ...", child_slot);
1651 + for (i = 0; i < ap_max_daemons_limit; ++i)
1653 + if (ap_child_table[i].pid == pid.pid)
1659 + if (child_slot >= 0)
1661 + ap_child_table[child_slot].pid = 0;
1662 + ap_update_child_status_from_indexes(child_slot, i, SERVER_DEAD,
1663 + (request_rec *) NULL);
1666 + if (remaining_children_to_start && (child_slot < num_childs))
1668 + /* we're still doing a 1-for-1 replacement of dead
1669 + * children with new children
1671 + _DBG("replacing by new child ...",0);
1672 + make_child(ap_server_conf, child_slot);
1673 + --remaining_children_to_start;
1675 +#if APR_HAS_OTHER_CHILD
1677 + else if (apr_proc_other_child_alert(&pid, APR_OC_REASON_DEATH, status) == 0)
1682 + else if (is_graceful)
1684 + /* Great, we've probably just lost a slot in the
1685 + * child table. Somehow we don't know about this
1688 + ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
1690 + "long lost child came home! (pid %ld)",
1693 + /* Don't perform idle maintenance when a child dies,
1694 + * only do it when there's a timeout. Remember only a
1695 + * finite number of children can die, and it's pretty
1696 + * pathological for a lot to die suddenly.
1700 + else if (remaining_children_to_start)
1702 + /* we hit a 1 second timeout in which none of the previous
1703 + * generation of children needed to be reaped... so assume
1704 + * they're all done, and pick up the slack if any is left.
1706 + _TRACE_CALL("startup_children()",0);
1707 + remaining_children_to_start = startup_children(remaining_children_to_start);
1708 + _TRACE_RET("startup_children()",0);
1709 + /* In any event we really shouldn't do the code below because
1710 + * few of the servers we just started are in the IDLE state
1711 + * yet, so we'd mistakenly create an extra server.
1716 + perform_child_maintenance();
1720 +int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
1722 + int remaining_children_to_start;
1726 + apr_size_t one = 1;
1727 + apr_socket_t *sock = NULL;
1729 + ap_log_pid(pconf, ap_pid_fname);
1731 + first_server_limit = server_limit;
1732 + first_thread_limit = thread_limit;
1733 + if (changed_limit_at_restart)
1735 + ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
1736 + "WARNING: Attempt to change ServerLimit or ThreadLimit "
1737 + "ignored during restart");
1738 + changed_limit_at_restart = 0;
1741 + ap_server_conf = s;
1743 + /* Initialize cross-process accept lock */
1744 + ap_lock_fname = apr_psprintf(_pconf, "%s.%u",
1745 + ap_server_root_relative(_pconf, ap_lock_fname),
1747 + rv = ACCEPT_PROC_MUTEX_CREATE;
1748 + if (rv != APR_SUCCESS)
1750 + ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
1751 + "Couldn't create cross-process lock");
1757 + if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK)
1762 + /* Initialize the child table */
1765 + for (i = 0; i < server_limit; i++)
1767 + ap_child_table[i].pid = 0;
1771 + /* We need to put the new listeners at the end of the ap_listeners
1772 + * list. If we don't, then the pool will be cleared before the
1773 + * open_logs phase is called for the second time, and ap_listeners
1774 + * will have only invalid data. If that happens, then the sockets
1775 + * that we opened using make_sock() will be lost, and the server
1778 + apr_os_file_get(&fd, pipe_of_death_in);
1779 + apr_os_sock_put(&sock, &fd, pconf);
1781 + listen_add ( pconf, sock, check_pipe_of_death );
1784 + /* If we're doing a graceful_restart then we're going to see a lot
1785 + * of children exiting immediately when we get into the main loop
1786 + * below (because we just sent them AP_SIG_GRACEFUL). This happens
1787 + * pretty rapidly... and for each one that exits we'll start a new one
1788 + * until we reach at least daemons_min_free. But we may be permitted to
1789 + * start more than that, so we'll just keep track of how many we're
1790 + * supposed to start up without the 1 second penalty between each fork.
1792 + remaining_children_to_start = num_childs;
1793 + if (!is_graceful) {
1794 + remaining_children_to_start = \
1795 + startup_children(remaining_children_to_start);
1798 + /* give the system some time to recover before kicking into
1799 + * exponential mode */
1800 + hold_off_on_exponential_spawning = 10;
1803 + ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
1804 + "%s configured -- resuming normal operations",
1805 + ap_get_server_version());
1806 + ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
1807 + "Server built: %s", ap_get_server_built());
1808 +#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
1809 +#ifdef NO_SERIALIZED_ACCEPT
1810 + _DBG("AcceptMutex: n/a (compiled w/ NO_SERIALIZED_ACCEPT)", 0 );
1811 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
1812 + "AcceptMutex: n/a (compiled w/ NO_SERIALIZED_ACCEPT)" );
1814 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
1815 + "AcceptMutex: %s (default: %s)",
1816 + apr_proc_mutex_name(process_accept_mutex),
1817 + apr_proc_mutex_defname());
1820 + restart_pending = shutdown_pending = 0;
1822 + server_main_loop(remaining_children_to_start);
1824 + if (shutdown_pending)
1826 + /* Time to gracefully shut down:
1827 + * Kill child processes, tell them to call child_exit, etc...
1829 + if (unixd_killpg(getpgrp(), SIGTERM) < 0)
1831 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
1832 + "killpg SIGTERM");
1834 + ap_reclaim_child_processes(1); /* Start with SIGTERM */
1838 + /* cleanup pid file on normal shutdown */
1839 + const char *pidfile = NULL;
1840 + pidfile = ap_server_root_relative (pconf, ap_pid_fname);
1841 + if (pidfile != NULL && unlink(pidfile) == 0) {
1842 + ap_log_error(APLOG_MARK, APLOG_INFO, 0,
1844 + "removed PID file %s (pid=%ld)",
1845 + pidfile, (long)getpid());
1848 + ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
1849 + ap_server_conf, "caught SIGTERM, shutting down");
1854 + /* we've been told to restart */
1855 + apr_signal(SIGHUP, SIG_IGN);
1857 + if (one_process) return 1; /* not worth thinking about */
1861 + char char_of_death = AP_metuxmpm_CHAR_OF_DEATH;
1863 + ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
1864 + ap_server_conf, AP_SIG_GRACEFUL_STRING " received. "
1865 + "Doing graceful restart");
1867 + /* This is mostly for debugging... so that we know what is still
1868 + * gracefully dealing with existing request.
1871 + for (i = 0; i < num_childs; ++i)
1873 + ((ap_child_table[i].pid) && (ap_child_table[i].status = SERVER_DYING));
1876 + /* give the children the signal to die */
1877 + for (i = 0; i < num_childs;)
1879 + if ((rv = apr_file_write(pipe_of_death_out, &char_of_death,&one)) != APR_SUCCESS)
1881 + if (APR_STATUS_IS_EINTR(rv)) continue;
1882 + ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
1883 + "write pipe_of_death");
1890 + /* Kill 'em all. Since the child acts the same on the parents SIGTERM
1891 + * and a SIGHUP, we may as well use the same signal, because some user
1892 + * pthreads are stealing signals from us left and right.
1894 + if (unixd_killpg(getpgrp(), SIGTERM) < 0)
1896 + ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
1897 + "killpg SIGTERM");
1899 + ap_reclaim_child_processes(1); /* Start with SIGTERM */
1900 + ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
1901 + ap_server_conf, "SIGHUP received. Attempting to restart");
1906 +/* This really should be a post_config hook, but the error log is already
1907 + * redirected by that point, so we need to do this in the open_logs phase.
1909 +static int metuxmpm_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
1914 + ap_server_conf = s;
1916 + _DBG("port=%d", ap_server_conf->port);
1918 + if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
1919 + ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
1920 + NULL, "metuxmpm_open_logs(): no listening sockets available, shutting down");
1924 + ap_log_pid(pconf, ap_pid_fname);
1926 + if ((rv = ap_mpm_pod_open(pconf, &pod))) {
1927 + ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
1928 + "Could not open pipe-of-death.");
1932 + if ((rv = apr_file_pipe_create(&pipe_of_death_in, &pipe_of_death_out,
1933 + pconf)) != APR_SUCCESS) {
1934 + ap_log_error(APLOG_MARK, APLOG_ERR, rv,
1935 + (const server_rec*) ap_server_conf,
1936 + "apr_file_pipe_create (apipe_of_death)");
1939 + if ((rv = apr_file_pipe_timeout_set(pipe_of_death_in, 0)) != APR_SUCCESS) {
1940 + ap_log_error(APLOG_MARK, APLOG_ERR, rv,
1941 + (const server_rec*) ap_server_conf,
1942 + "apr_file_pipe_timeout_set (pipe_of_death)");
1949 +static int metuxmpm_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
1951 + static int restart_num = 0;
1952 + int no_detach, debug, foreground;
1953 + ap_directive_t *pdir;
1955 + int tmp_server_limit = DEFAULT_SERVER_LIMIT;
1956 + int tmp_thread_limit = DEFAULT_THREAD_LIMIT;
1959 + debug = ap_exists_config_define("DEBUG");
1962 + foreground = one_process = 1;
1966 + one_process = ap_exists_config_define("ONE_PROCESS");
1967 + no_detach = ap_exists_config_define("NO_DETACH");
1968 + foreground = ap_exists_config_define("FOREGROUND");
1973 + foreground = 0; */
1975 + /* sigh, want this only the second time around */
1976 + if (restart_num++ == 1)
1980 + if (!one_process && !foreground)
1982 + rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
1983 + : APR_PROC_DETACH_DAEMONIZE);
1984 + if (rv != APR_SUCCESS) {
1985 + ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
1986 + "apr_proc_detach failed");
1987 + return HTTP_INTERNAL_SERVER_ERROR;
1991 + my_pid = getpid();
1994 + unixd_pre_config(ptemp);
1995 + ap_listen_pre_config();
1996 +// num_childs = DEFAULT_NUM_DAEMON;
1998 + threads_to_start = DEFAULT_START_THREAD;
1999 + min_spare_threads = DEFAULT_MIN_SPARE_THREAD;
2000 + max_spare_threads = DEFAULT_MAX_SPARE_THREAD;
2001 + max_threads = thread_limit;
2002 + ap_pid_fname = DEFAULT_PIDLOG;
2003 + ap_lock_fname = DEFAULT_LOCKFILE;
2004 + ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
2006 + apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
2008 + /* we need to know ServerLimit and ThreadLimit before we start processing
2009 + * the tree because we need to already have allocated child_info_table
2011 + for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next)
2013 + if (!strcasecmp(pdir->directive, "ServerLimit"))
2015 + if (atoi(pdir->args) > tmp_server_limit)
2017 + tmp_server_limit = atoi(pdir->args);
2018 + if (tmp_server_limit > MAX_SERVER_LIMIT)
2020 + tmp_server_limit = MAX_SERVER_LIMIT;
2024 + else if (!strcasecmp(pdir->directive, "ThreadLimit"))
2026 + if (atoi(pdir->args) > tmp_thread_limit)
2028 + tmp_thread_limit = atoi(pdir->args);
2029 + if (tmp_thread_limit > MAX_THREAD_LIMIT)
2031 + tmp_thread_limit = MAX_THREAD_LIMIT;
2037 + /* -- now setup the child information table -- */
2038 + child_info_table = (child_info_t *)apr_pcalloc(p, tmp_server_limit * sizeof(child_info_t));
2039 + child_info_table_size = tmp_server_limit; /* FIXME: remove tmp_server_limit */
2040 + for (i = 0; i < tmp_server_limit; i++)
2042 + child_info_table[i].uid = -1;
2043 + child_info_table[i].gid = -1;
2044 + child_info_table[i].input = -1;
2045 + child_info_table[i].output = -1;
2046 + child_info_table[i].type = -1;
2047 + child_info_table[i].id = i;
2055 +static int pass_request(request_rec *r)
2058 + struct msghdr msg;
2059 + struct cmsghdr *cmsg;
2061 + char *bodypart = NULL;
2062 + struct iovec iov[2];
2063 + conn_rec *c = r->connection;
2064 + apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc);
2065 + apr_bucket_brigade *bodypart_bb = NULL;
2066 + apr_size_t len = 0;
2067 + apr_size_t bodypart_len = 0;
2068 + metuxmpm_header h;
2069 + apr_bucket *bucket;
2070 + const apr_array_header_t *headers_in_array;
2071 + const apr_table_entry_t *headers_in;
2074 + apr_socket_t *thesock = ap_get_module_config(r->connection->conn_config, &core_module);
2075 + metuxmpm_server_conf *sconf = metuxmpm_SERVER_CONF(r->server->module_config);
2077 + if ((!r->the_request) || (!strlen(r->the_request)))
2079 + _DBG("empty request. dropping it (%ld)", r->the_request);
2083 + if (!sconf->child)
2085 + _DBG("server %s in child %d has no child_info assiocated",
2086 + r->hostname, child_num);
2090 + _DBG("passing request to another child. Vhost: %s, child %d %d",
2091 + apr_table_get(r->headers_in, "Host"), child_num, sconf->child->output);
2092 + _DBG("r->the_request=\"%s\" len=%d", r->the_request, strlen(r->the_request));
2094 + ap_get_brigade(r->connection->input_filters, bb, AP_MODE_EXHAUSTIVE, APR_NONBLOCK_READ, len);
2096 + /* Scan the brigade looking for heap-buckets */
2098 + _DBG("Scanning the brigade",0);
2099 + bucket = APR_BRIGADE_FIRST(bb);
2100 + while (bucket != APR_BRIGADE_SENTINEL(bb) &&
2101 + APR_BUCKET_IS_HEAP(bucket)) {
2102 + _DBG("HEAP BUCKET is found, length=%d", bucket->length);
2103 + bucket = APR_BUCKET_NEXT(bucket);
2104 + if (!APR_BUCKET_IS_HEAP(bucket)) {
2105 + _DBG("NON-HEAP BUCKET is found, extracting the part of brigade before it",0);
2107 + bb = apr_brigade_split(bodypart_bb, bucket);
2108 + /* Do we need to apr_destroy_brigade(bb) here?
2109 + * Yeah, I know we do apr_pool_destroy(r->pool) before return, but
2110 + * ap_get_brigade is in non-blocking mode (however len is zero).
2112 + if (apr_brigade_pflatten(bodypart_bb, &bodypart, &bodypart_len, r->pool) != APR_SUCCESS) {
2113 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
2114 + "Unable to flatten brigade, declining request");
2115 + apr_pool_destroy(r->pool);
2118 + _DBG("Brigade is flattened as bodypart (bodypart_len=%d)", bodypart_len);
2121 + _DBG("Scanning is finished",0);
2123 + apr_os_sock_get(&sock_fd, thesock);
2127 + headers_in_array = apr_table_elts(r->headers_in);
2128 + headers_in = (const apr_table_entry_t *) headers_in_array->elts;
2130 + h.headers = apr_pstrcat(h.p, r->the_request, CRLF, NULL);
2131 + for (counter = 0; counter < headers_in_array->nelts; counter++) {
2132 + if (headers_in[counter].key == NULL
2133 + || headers_in[counter].val == NULL) {
2136 + h.headers = apr_pstrcat(h.p, h.headers, headers_in[counter].key, ": ",
2137 + headers_in[counter].val, CRLF, NULL);
2140 + h.headers = apr_pstrcat(h.p, h.headers, CRLF, NULL);
2141 + ap_xlate_proto_to_ascii(h.headers, strlen(h.headers));
2143 + iov[0].iov_base = &bodypart_len;
2144 + iov[0].iov_len = sizeof(bodypart_len);
2145 + iov[1].iov_base = h.headers;
2146 + iov[1].iov_len = strlen(h.headers) + 1;
2148 + msg.msg_name = NULL;
2149 + msg.msg_namelen = 0;
2150 + msg.msg_iov = iov;
2151 + msg.msg_iovlen = 2;
2153 + cmsg = apr_palloc(r->pool, sizeof(*cmsg) + sizeof(sock_fd));
2154 + cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sock_fd);
2155 + cmsg->cmsg_level = SOL_SOCKET;
2156 + cmsg->cmsg_type = SCM_RIGHTS;
2158 + memcpy(CMSG_DATA(cmsg), &sock_fd, sizeof(sock_fd));
2160 + msg.msg_control = cmsg;
2161 + msg.msg_controllen = cmsg->cmsg_len;
2163 + _DBG("Writing message to %d, passing sock_fd: %d", sconf->child->output, sock_fd);
2164 + _DBG("headers=\"%s\"", h.headers);
2165 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
2166 + "Writing message to %d, passing sd: %d", sconf->child->output, sock_fd);
2168 + if ((rv = sendmsg(sconf->child->output, &msg, 0)) == -1)
2170 + apr_pool_destroy(r->pool);
2171 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
2172 + "Writing message failed %d %d", rv, errno);
2176 + _DBG("Writing message succeeded %d", rv);
2177 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
2178 + "Writing message succeeded %d", rv);
2180 + if (bodypart_len) {
2181 + _DBG("Passing bodypart (bodypart_len=%d) \"%s\"", bodypart_len, bodypart);
2182 + if ((rv = send(sconf->child->output, bodypart, bodypart_len, 0)) == -1) {
2183 + apr_pool_destroy(r->pool);
2184 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
2185 + "Writing message failed %d %d", rv, errno);
2188 + _DBG("Writing message succeeded %d", rv);
2189 + ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
2190 + "Writing message succeeded %d", rv);
2192 + _DBG("No bodypart",0);
2195 + /* -- close the socket at our site -- */
2196 + apr_socket_close(thesock);
2197 + /* DS: What is the purpose of this?
2198 + * apr_socket_close(sconf->child->output) seems more reasonable
2200 + _DBG("closing socket %d at our side", sock_fd);
2201 + apr_pool_destroy(r->pool);
2205 +static int metuxmpm_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *server_list)
2208 + server_rec *sr_walk;
2209 + metuxmpm_server_conf *sconf;
2211 + for (sr_walk = server_list; sr_walk; sr_walk = sr_walk->next)
2213 + sconf = metuxmpm_SERVER_CONF(sr_walk->module_config);
2216 + _DBG("server \"%s\" child=%d fd_in=%d fd_out=%d",
2217 + sr_walk->server_hostname,
2219 + sconf->child->input,
2220 + sconf->child->output );
2224 + _DBG("server \"%s\" has no child assiocated.",
2225 + sr_walk->server_hostname);
2229 + thread_info_table = (thread_info_t *)apr_pcalloc(p, thread_limit * sizeof(thread_info_t));
2230 + for (i = 0; i < thread_limit; i++)
2232 + thread_info_table[i].sock_fd = AP_metuxmpm_THISCHILD;
2233 + thread_info_table[i].status = 0;
2235 + ap_child_table = (ap_ctable *)apr_pcalloc(p, server_limit * sizeof(ap_ctable));
2240 +static int metuxmpm_post_read(request_rec *r)
2242 + int thread_num = r->connection->id % thread_limit;
2243 + metuxmpm_server_conf *sconf = metuxmpm_SERVER_CONF(r->server->module_config);
2245 + if (!strlen(r->the_request))
2247 + _DBG("corrupt request. aborting",0);
2251 + if (thread_info_table[thread_num].sock_fd != AP_metuxmpm_THISCHILD)
2253 + apr_socket_t *sock = NULL;
2255 + apr_os_sock_put(&sock, &thread_info_table[thread_num].sock_fd,
2256 + r->connection->pool);
2257 + ap_sock_disable_nagle(sock);
2258 + ap_set_module_config(r->connection->conn_config, &core_module, sock);
2259 + _DBG("not the right socket? ",0);
2263 + switch (child_info_table[child_num].type)
2265 + case CHILD_TYPE_MULTIPLEXER:
2267 + _DBG("MULTIPLEXER => Determining if request should be passed. "
2268 + "Child Num: %d, dest-child: %d, hostname from server: %s r->hostname=%s r->the_request=\"%s\"",
2269 + child_num, sconf->child->id, r->server->server_hostname, r->hostname, r->the_request);
2271 + if (sconf->child->id != child_num)
2273 + _DBG("Passing request.",0);
2274 + if (pass_request(r) == -1)
2276 + ap_log_error(APLOG_MARK, APLOG_ERR, 0,
2277 + ap_server_conf, "Could not pass request to proper "
2278 + "child, request will not be honoured.");
2281 + _DBG("doing longjmp",0);
2282 + longjmp(thread_info_table[thread_num].jmpbuffer, 1);
2283 + _DBG("request declined at our site",0);
2285 + _DBG("OUH! we should never reach this point",0);
2287 + _DBG("eeeh?! the server is assigned to the multiplexer! ... dropping request",0);
2290 + case CHILD_TYPE_PROCESSOR:
2292 + _DBG("PROCESSOR %d", child_num );
2293 + if (sconf->child->id != child_num)
2295 + _DBG("hmmpf! this server is not assigned to us! what did the mux have smoked ?!",0);
2297 + _DBG("request for %s / (server %s) seems to be for us", r->hostname, r->server->server_hostname );
2302 + _DBG("unspecified child type %d in %d, dropping request", child_info_table[child_num].type, child_num );
2306 + _DBG("THIS POINT SHOULD NOT BE REACHED!",0);
2310 +static void metuxmpm_hooks(apr_pool_t *p)
2312 + /* The metuxmpm open_logs phase must run before the core's, or stderr
2313 + * will be redirected to a file, and the messages won't print to the
2316 + static const char *const aszSucc[] = {"core.c", NULL};
2319 + ap_hook_open_logs(metuxmpm_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
2320 + ap_hook_pre_config(metuxmpm_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
2321 + ap_hook_post_config(metuxmpm_post_config, NULL, NULL, APR_HOOK_MIDDLE);
2323 + /* Both of these must be run absolutely first. If this request isn't for
2324 + * this server then we need to forward it to the proper child. No sense
2325 + * tying up this server running more post_read request hooks if it is
2326 + * just going to be forwarded along. The process_connection hook allows
2327 + * metuxmpm to receive the passed request correctly, by automatically
2328 + * filling in the core_input_filter's ctx pointer.
2330 + ap_hook_post_read_request(metuxmpm_post_read, NULL, NULL,
2331 + APR_HOOK_REALLY_FIRST);
2332 + ap_hook_process_connection(metuxmpm_process_connection, NULL, NULL,
2333 + APR_HOOK_REALLY_FIRST);
2336 +//static const char *cf_NumServers(cmd_parms *cmd, void *dummy,
2337 +// const char *arg)
2339 +// const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2340 +// if (err != NULL) return err;
2342 +// num_childs = atoi(arg);
2343 +// if (num_childs > server_limit) {
2344 +// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2345 +// "WARNING: NumServers of %d exceeds ServerLimit value "
2346 +// "of %d servers,", num_childs, server_limit);
2347 +// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2348 +// " lowering NumServers to %d. To increase, please "
2349 +// "see the", server_limit);
2350 +// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2351 +// " ServerLimit directive.");
2352 +// num_childs = server_limit;
2354 +// else if (num_childs < 1)
2356 +// ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2357 +// "WARNING: Require NumServers > 0, setting to 1");
2363 +static const char *cf_StartThreads(cmd_parms *cmd, void *dummy,
2366 + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2367 + if (err != NULL) return err;
2369 + threads_to_start = atoi(arg);
2370 + if (threads_to_start > thread_limit) {
2371 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2372 + "WARNING: StartThreads of %d exceeds ThreadLimit value"
2373 + " of %d threads,", threads_to_start,
2375 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2376 + " lowering StartThreads to %d. To increase, please"
2377 + " see the", thread_limit);
2378 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2379 + " ThreadLimit directive.");
2381 + else if (threads_to_start < 1) {
2382 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2383 + "WARNING: Require StartThreads > 0, setting to 1");
2384 + threads_to_start = 1;
2389 +static const char *cf_MinSpareThreads(cmd_parms *cmd, void *dummy,
2392 + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2393 + if (err != NULL) return err;
2395 + min_spare_threads = atoi(arg);
2396 + if (min_spare_threads <= 0)
2398 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2399 + "WARNING: detected MinSpareThreads set to non-positive.");
2400 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2401 + "Resetting to 1 to avoid almost certain Apache failure.");
2402 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2403 + "Please read the documentation.");
2404 + min_spare_threads = 1;
2410 +static const char *cf_MaxSpareThreads(cmd_parms *cmd, void *dummy,
2413 + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2414 + if (err != NULL) return err;
2416 + max_spare_threads = atoi(arg);
2417 + if (max_spare_threads >= thread_limit)
2419 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2420 + "WARNING: detected MinSpareThreads set higher than");
2421 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2422 + "ThreadLimit. Resetting to %d", thread_limit);
2423 + max_spare_threads = thread_limit;
2428 +static const char *cf_MaxThreadsPerChild(cmd_parms *cmd, void *dummy, const char *arg)
2430 + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2431 + if (err != NULL) return err;
2433 + max_threads = atoi(arg);
2434 + if (max_threads > thread_limit)
2436 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2437 + "WARNING: detected MaxThreadsPerChild set higher than");
2438 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2439 + "ThreadLimit. Resetting to %d", thread_limit);
2440 + max_threads = thread_limit;
2445 +static const char* child_add ( int type, const char* user_name, const char* group_name ,const char* chroot_dir )
2447 + _DBG("%d: %s.%s %s", num_childs, user_name, group_name, chroot_dir);
2448 + if (num_childs<server_limit)
2453 + child_info_table[num_childs].uid = ap_uname2id(user_name);
2454 + child_info_table[num_childs].gid = ap_gname2id(group_name);
2455 + child_info_table[num_childs].type = type;
2456 + socketpair(PF_UNIX, SOCK_STREAM, 0, socks);
2457 + child_info_table[num_childs].input = socks[0];
2458 + child_info_table[num_childs].output = socks[1];
2459 + child_info_table[num_childs].chroot_dir = 0;
2461 + l = strlen(chroot_dir);
2463 + child_info_table[num_childs].chroot_dir = chroot_dir;
2464 + /* should copy the contents */
2465 + /* do we need to check its existence? */
2469 + _DBG("[%d] uid=%d gid=%d type=%d fd_in=%d fd_out=%d,chroot_dir=%s",
2471 + child_info_table[num_childs].uid,
2472 + child_info_table[num_childs].gid,
2473 + child_info_table[num_childs].type,
2474 + child_info_table[num_childs].input,
2475 + child_info_table[num_childs].output,
2476 + child_info_table[num_childs].chroot_dir
2479 + if (child_info_table[num_childs].uid == 0 ||
2480 + child_info_table[num_childs].gid == 0)
2482 + _DBG("Assigning root user/group to a child.",0);
2488 + return "Trying to use more child ID's than NumServers. "
2489 + "Increase NumServers in your config file.";
2492 +/* we define an Processor w/ specific uid/gid */
2493 +static const char *cf_Processor(
2494 + cmd_parms *cmd, void *dummy, const char *user_name, const char *group_name, const char *chroot_dir)
2496 + _DBG("%d: %s.%s %s", num_childs, user_name, group_name, chroot_dir);
2497 + return child_add ( CHILD_TYPE_PROCESSOR, user_name, group_name, chroot_dir );
2500 +/* we define an Multiplexer child w/ specific uid/gid */
2501 +static const char *cf_Multiplexer(
2502 + cmd_parms *cmd, void *dummy, const char *user_name, const char *group_name, const char *chroot_dir)
2504 + _DBG("%d: %s.%s %s", num_childs, user_name, group_name, chroot_dir);
2505 + return child_add ( CHILD_TYPE_MULTIPLEXER, user_name, group_name, chroot_dir );
2508 +/* process the config file option AssignUserId */
2509 +/* -- FIXME: perhaps we could add childs from here automatically -- */
2510 +static const char * cf_AssignUserId
2514 + const char *user_name,
2515 + const char *group_name
2520 + int uid = ap_uname2id(user_name);
2521 + int gid = ap_gname2id(group_name);
2522 + const char *errstr;
2524 + metuxmpm_server_conf *sconf
2525 + = metuxmpm_SERVER_CONF(cmd->server->module_config);
2527 + sconf->fullsockname =
2528 + apr_pstrcat(cmd->pool, sconf->sockname, ".", user_name,":", group_name, NULL);
2530 + _DBG("user=\"%s\" (%d) group=\"%s\" (%d) numchilds=%d", user_name, uid, group_name, gid, num_childs );
2532 + for (i = 0; i < num_childs; i++)
2534 + _DBG("trying %d: %d.%d / %d", i,
2535 + child_info_table[i].uid, child_info_table[i].gid, child_info_table[i].type );
2537 + if ((uid == child_info_table[i].uid) &&
2538 + (gid == child_info_table[i].gid) &&
2539 + (child_info_table[i].type == CHILD_TYPE_PROCESSOR))
2541 + /* create an socket for this child, if it has no one */
2542 + /* FIXME: we should do it anywhere else, for _all_ childs */
2543 + sconf->child = &child_info_table[i];
2544 + _DBG("assigning server to child %d; "
2545 + "UID: %d, GID: %d, input=%d, output=%d",
2546 + i, uid, gid, sconf->child->input, sconf->child->output);
2551 + _DBG("assigning server to child FAILED %d; UID: %d, GID: %d ", i, uid, gid);
2552 + return "Unable to find process with matching uid/gid.";
2555 +static const char *cf_ServerLimit (cmd_parms *cmd, void *dummy, const char *arg)
2557 + int tmp_server_limit;
2559 + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2560 + if (err != NULL) return err;
2562 + tmp_server_limit = atoi(arg);
2563 + /* you cannot change ServerLimit across a restart; ignore
2564 + * any such attempts
2566 + if (first_server_limit && tmp_server_limit != server_limit)
2568 + /* how do we log a message? the error log is a bit bucket at this
2569 + * point; we'll just have to set a flag so that ap_mpm_run()
2570 + * logs a warning later
2572 + changed_limit_at_restart = 1;
2575 + server_limit = tmp_server_limit;
2577 + if (server_limit > MAX_SERVER_LIMIT)
2579 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2580 + "WARNING: ServerLimit of %d exceeds compile time limit "
2581 + "of %d servers,", server_limit, MAX_SERVER_LIMIT);
2582 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2583 + " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
2584 + server_limit = MAX_SERVER_LIMIT;
2586 + else if (server_limit < 1)
2588 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2589 + "WARNING: Require ServerLimit > 0, setting to 1");
2595 +static const char *cf_ThreadLimit (cmd_parms *cmd, void *dummy, const char *arg)
2597 + int tmp_thread_limit;
2599 + const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
2600 + if (err != NULL) return err;
2602 + tmp_thread_limit = atoi(arg);
2603 + /* you cannot change ThreadLimit across a restart; ignore
2604 + * any such attempts
2606 + if (first_thread_limit && tmp_thread_limit != thread_limit)
2608 + /* how do we log a message? the error log is a bit bucket at this
2609 + * point; we'll just have to set a flag so that ap_mpm_run()
2610 + * logs a warning later
2612 + changed_limit_at_restart = 1;
2615 + thread_limit = tmp_thread_limit;
2617 + if (thread_limit > MAX_THREAD_LIMIT)
2619 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2620 + "WARNING: ThreadLimit of %d exceeds compile time limit "
2621 + "of %d servers,", thread_limit, MAX_THREAD_LIMIT);
2622 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2623 + " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
2624 + thread_limit = MAX_THREAD_LIMIT;
2626 + else if (thread_limit < 1)
2628 + ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
2629 + "WARNING: Require ThreadLimit > 0, setting to 1");
2635 +static const command_rec metuxmpm_cmds[] = {
2636 +UNIX_DAEMON_COMMANDS,
2638 +AP_INIT_TAKE1("StartThreads", cf_StartThreads, NULL, RSRC_CONF,
2639 + "Number of threads each child creates"),
2640 +AP_INIT_TAKE1("MinSpareThreads", cf_MinSpareThreads, NULL, RSRC_CONF,
2641 + "Minimum number of idle threads per child, to handle "
2642 + "request spikes"),
2643 +AP_INIT_TAKE1("MaxSpareThreads", cf_MaxSpareThreads, NULL, RSRC_CONF,
2644 + "Maximum number of idle threads per child"),
2645 +AP_INIT_TAKE1("MaxThreadsPerChild", cf_MaxThreadsPerChild, NULL, RSRC_CONF,
2646 + "Maximum number of threads per child"),
2647 +AP_INIT_TAKE23("Multiplexer", cf_Multiplexer, NULL, RSRC_CONF,
2648 + "Specify an Multiplexer Child configuration."),
2649 +AP_INIT_TAKE23("Processor", cf_Processor, NULL, RSRC_CONF,
2650 + "Specify a User and Group for a specific child process."),
2651 +AP_INIT_TAKE2("AssignUserID", cf_AssignUserId, NULL, RSRC_CONF,
2652 + "Tie a virtual host to a specific child process."),
2653 +AP_INIT_TAKE1("ServerLimit", cf_ServerLimit, NULL, RSRC_CONF,
2654 + "Maximum value of NumServers for this run of Apache"),
2655 +AP_INIT_TAKE1("ThreadLimit", cf_ThreadLimit, NULL, RSRC_CONF,
2656 + "Maximum worker threads in a server for this run of Apache"),
2660 +/* == allocate an private server config structure == */
2661 +static void *metuxmpm_create_config(apr_pool_t *p, server_rec *s)
2663 + metuxmpm_server_conf *c = (metuxmpm_server_conf *)
2664 + apr_pcalloc(p, sizeof(metuxmpm_server_conf));
2669 +module AP_MODULE_DECLARE_DATA mpm_metuxmpm_module =
2671 + MPM20_MODULE_STUFF,
2672 + ap_mpm_rewrite_args, /* hook to run before apache parses args */
2673 + NULL, /* create per-directory config structure */
2674 + NULL, /* merge per-directory config structures */
2675 + metuxmpm_create_config, /* create per-server config structure */
2676 + NULL, /* merge per-server config structures */
2677 + metuxmpm_cmds, /* command apr_table_t */
2678 + metuxmpm_hooks /* register_hooks */
2681 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
2682 --- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm_default.h 1970-01-01 01:00:00.000000000 +0100
2683 +++ httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm_default.h 2005-12-12 11:37:00.910963000 +0100
2685 +/* ====================================================================
2686 + * The Apache Software License, Version 1.1
2688 + * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
2691 + * Redistribution and use in source and binary forms, with or without
2692 + * modification, are permitted provided that the following conditions
2695 + * 1. Redistributions of source code must retain the above copyright
2696 + * notice, this list of conditions and the following disclaimer.
2698 + * 2. Redistributions in binary form must reproduce the above copyright
2699 + * notice, this list of conditions and the following disclaimer in
2700 + * the documentation and/or other materials provided with the
2703 + * 3. The end-user documentation included with the redistribution,
2704 + * if any, must include the following acknowledgment:
2705 + * "This product includes software developed by the
2706 + * Apache Software Foundation (http://www.apache.org/)."
2707 + * Alternately, this acknowledgment may appear in the software itself,
2708 + * if and wherever such third-party acknowledgments normally appear.
2710 + * 4. The names "Apache" and "Apache Software Foundation" must
2711 + * not be used to endorse or promote products derived from this
2712 + * software without prior written permission. For written
2713 + * permission, please contact apache@apache.org.
2715 + * 5. Products derived from this software may not be called "Apache",
2716 + * nor may "Apache" appear in their name, without prior written
2717 + * permission of the Apache Software Foundation.
2719 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
2720 + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2721 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2722 + * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
2723 + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
2724 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
2725 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
2726 + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
2727 + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
2728 + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
2729 + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2731 + * ====================================================================
2733 + * This software consists of voluntary contributions made by many
2734 + * individuals on behalf of the Apache Software Foundation. For more
2735 + * information on the Apache Software Foundation, please see
2736 + * <http://www.apache.org/>.
2738 + * Portions of this software are based upon public domain software
2739 + * originally written at the National Center for Supercomputing Applications,
2740 + * University of Illinois, Urbana-Champaign.
2743 +#ifndef APACHE_MPM_DEFAULT_H
2744 +#define APACHE_MPM_DEFAULT_H
2746 +#define NO_SERIALIZED_ACCEPT
2748 +/* Number of threads to spawn off by default --- also, if fewer than
2749 + * this free when the caretaker checks, it will spawn more.
2751 +#ifndef DEFAULT_START_THREAD
2752 +#define DEFAULT_START_THREAD 5
2755 +/* Maximum number of *free* server threads --- more than this, and
2756 + * they will die off.
2759 +#ifndef DEFAULT_MAX_SPARE_THREAD
2760 +#define DEFAULT_MAX_SPARE_THREAD 10
2763 +/* Minimum --- fewer than this, and more will be created */
2765 +#ifndef DEFAULT_MIN_SPARE_THREAD
2766 +#define DEFAULT_MIN_SPARE_THREAD 5
2769 +/* Number of servers to spawn off by default
2771 +#ifndef DEFAULT_NUM_DAEMON
2772 +#define DEFAULT_NUM_DAEMON 2
2775 +/* File used for accept locking, when we use a file */
2776 +#ifndef DEFAULT_LOCKFILE
2777 +#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
2780 +/* Where the main/parent process's pid is logged */
2781 +#ifndef DEFAULT_PIDLOG
2782 +#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
2786 + * Interval, in microseconds, between scoreboard maintenance.
2788 +#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
2789 +#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
2792 +/* Number of requests to try to handle in a single process. If <= 0,
2793 + * the children don't die off.
2795 +#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
2796 +#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
2799 +#endif /* AP_MPM_DEFAULT_H */
2800 diff -urN httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm.h httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm.h
2801 --- httpd-2.2.0.org/server/mpm/experimental/metuxmpm/mpm.h 1970-01-01 01:00:00.000000000 +0100
2802 +++ httpd-2.2.0/server/mpm/experimental/metuxmpm/mpm.h 2005-12-12 11:37:00.910963000 +0100
2804 +/* ====================================================================
2805 + * The Apache Software License, Version 1.1
2807 + * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
2810 + * Redistribution and use in source and binary forms, with or without
2811 + * modification, are permitted provided that the following conditions
2814 + * 1. Redistributions of source code must retain the above copyright
2815 + * notice, this list of conditions and the following disclaimer.
2817 + * 2. Redistributions in binary form must reproduce the above copyright
2818 + * notice, this list of conditions and the following disclaimer in
2819 + * the documentation and/or other materials provided with the
2822 + * 3. The end-user documentation included with the redistribution,
2823 + * if any, must include the following acknowledgment:
2824 + * "This product includes software developed by the
2825 + * Apache Software Foundation (http://www.apache.org/)."
2826 + * Alternately, this acknowledgment may appear in the software itself,
2827 + * if and wherever such third-party acknowledgments normally appear.
2829 + * 4. The names "Apache" and "Apache Software Foundation" must
2830 + * not be used to endorse or promote products derived from this
2831 + * software without prior written permission. For written
2832 + * permission, please contact apache@apache.org.
2834 + * 5. Products derived from this software may not be called "Apache",
2835 + * nor may "Apache" appear in their name, without prior written
2836 + * permission of the Apache Software Foundation.
2838 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
2839 + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
2840 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2841 + * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
2842 + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
2843 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
2844 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
2845 + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
2846 + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
2847 + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
2848 + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2850 + * ====================================================================
2852 + * This software consists of voluntary contributions made by many
2853 + * individuals on behalf of the Apache Software Foundation. For more
2854 + * information on the Apache Software Foundation, please see
2855 + * <http://www.apache.org/>.
2857 + * Portions of this software are based upon public domain software
2858 + * originally written at the National Center for Supercomputing Applications,
2859 + * University of Illinois, Urbana-Champaign.
2863 +#include "mpm_default.h"
2866 +#ifndef APACHE_MPM_METUXMPM_H
2867 +#define APACHE_MPM_METUXMPM_H
2869 +#define METUXMPM_MPM
2871 +#define MPM_NAME "metuxmpm"
2873 +#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
2874 +#define AP_MPM_WANT_WAIT_OR_TIMEOUT
2875 +#define AP_MPM_WANT_PROCESS_CHILD_STATUS
2876 +#define AP_MPM_WANT_SET_PIDFILE
2877 +#define AP_MPM_WANT_SET_SCOREBOARD
2878 +#define AP_MPM_WANT_SET_LOCKFILE
2879 +#define AP_MPM_WANT_SET_MAX_REQUESTS
2880 +#define AP_MPM_WANT_SET_COREDUMPDIR
2881 +#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
2882 +#define AP_MPM_WANT_SIGNAL_SERVER
2883 +#define AP_MPM_USES_POD
2885 +#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
2886 +#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
2887 +#define MPM_ACCEPT_FUNC unixd_accept
2889 +/* Table of child status */
2890 +#define SERVER_DEAD 0
2891 +#define SERVER_DYING 1
2892 +#define SERVER_ALIVE 2
2894 +typedef struct ap_ctable{
2896 + unsigned char status;
2899 +extern int ap_threads_per_child;
2900 +extern int ap_max_daemons_limit;
2901 +extern server_rec *ap_server_conf;
2903 +#endif /* APACHE_MPM_METUXMPM_H */
2904 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
2905 --- httpd-2.2.0.org/srclib/apr/network_io/unix/sockets.c 2005-09-09 10:21:17.000000000 +0200
2906 +++ httpd-2.2.0/srclib/apr/network_io/unix/sockets.c 2005-12-12 11:37:00.910963000 +0100
2907 @@ -416,7 +416,36 @@
2908 set_socket_vars(*sock, APR_INET, SOCK_STREAM, 0);
2909 (*sock)->timeout = -1;
2911 - (*sock)->local_port_unknown = (*sock)->local_interface_unknown = 1;
2912 +// (*sock)->local_port_unknown = (*sock)->local_interface_unknown = 1;
2915 + /* fixup socket's peer information.
2916 + we need it for the muxmpm. enrico weigelt, metux ITS
2917 + <weigelt@metux.de>
2919 + /* XXX next line looks bogus w.r.t. AF_INET6 support */
2921 + /* adjust remote address */
2922 + (*sock)->remote_addr->salen = sizeof((*sock)->remote_addr->sa);
2925 + (struct sockaddr*)&((*sock)->remote_addr->sa),
2926 + &((*sock)->remote_addr->salen)
2928 + (*sock)->remote_addr->port = ntohs((*sock)->remote_addr->sa.sin.sin_port);
2930 + /* XXX assumes sin_port and sin6_port at same offset */
2932 + /* adjust local address */
2935 + (struct sockaddr*)&((*sock)->local_addr->sa),
2936 + &((*sock)->local_addr->salen)
2938 + (*sock)->local_addr->port = ntohs((*sock)->local_addr->sa.sin.sin_port);
2939 + (*sock)->local_port_unknown = (*sock)->local_interface_unknown = 0;
2942 (*sock)->remote_addr_unknown = 1;
2943 (*sock)->socketdes = *thesock;