mpm_common.c revision 709cbb7b338843a3f9d7b9b92e8e0c4b1f9b7848
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering/* ====================================================================
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * The Apache Software License, Version 1.1
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen *
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * Copyright (c) 2000-2003 The Apache Software Foundation. All rights
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * reserved.
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen *
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * Redistribution and use in source and binary forms, with or without
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * modification, are permitted provided that the following conditions
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * are met:
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen *
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * 1. Redistributions of source code must retain the above copyright
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * notice, this list of conditions and the following disclaimer.
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen *
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * 2. Redistributions in binary form must reproduce the above copyright
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * notice, this list of conditions and the following disclaimer in
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * the documentation and/or other materials provided with the
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * distribution.
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen *
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * 3. The end-user documentation included with the redistribution,
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * if any, must include the following acknowledgment:
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * "This product includes software developed by the
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * Apache Software Foundation (http://www.apache.org/)."
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * Alternately, this acknowledgment may appear in the software itself,
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * if and wherever such third-party acknowledgments normally appear.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * 4. The names "Apache" and "Apache Software Foundation" must
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * not be used to endorse or promote products derived from this
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * software without prior written permission. For written
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * permission, please contact apache@apache.org.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * 5. Products derived from this software may not be called "Apache",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * nor may "Apache" appear in their name, without prior written
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * permission of the Apache Software Foundation.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * SUCH DAMAGE.
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * ====================================================================
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * This software consists of voluntary contributions made by many
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * individuals on behalf of the Apache Software Foundation. For more
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * information on the Apache Software Foundation, please see
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * <http://www.apache.org/>.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen * Portions of this software are based upon public domain software
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * originally written at the National Center for Supercomputing Applications,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * University of Illinois, Urbana-Champaign.
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen/* The purpose of this file is to store the code that MOST mpm's will need
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * this does not mean a function only goes into this file if every MPM needs
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * it. It means that if a function is needed by more than one MPM, and
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * future maintenance would be served by making the code common, then the
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen * function belongs here.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * This is going in src/main because it is not platform specific, it is
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * specific to multi-process servers, but NOT to Unix. Which is why it
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * does not belong in src/os/unix
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen#include "apr.h"
57e27ec0ada6775d85a5201cd25e989d92d0a1afZbigniew Jędrzejewski-Szmek#include "apr_thread_proc.h"
57e27ec0ada6775d85a5201cd25e989d92d0a1afZbigniew Jędrzejewski-Szmek#include "apr_signal.h"
a8eaaee72a2f06e0fb64fb71de3b71ecba31dafbJan Engelhardt#include "apr_strings.h"
57e27ec0ada6775d85a5201cd25e989d92d0a1afZbigniew Jędrzejewski-Szmek#define APR_WANT_STRFUNC
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen#include "apr_want.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "apr_getopt.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "apr_optional.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "apr_allocator.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "httpd.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "http_config.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "http_log.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "http_main.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "mpm.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "mpm_common.h"
102bd40e1ed71c7ab980a90435a1c23d4c786c63Lennart Poettering#include "ap_mpm.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "ap_listen.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "mpm_default.h"
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef AP_MPM_WANT_SET_SCOREBOARD
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include "scoreboard.h"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef HAVE_PWD_H
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <pwd.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef HAVE_GRP_H
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <grp.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#if APR_HAVE_UNISTD_H
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#include <unistd.h>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen#ifdef AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersenvoid ap_reclaim_child_processes(int terminate)
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen{
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen int i;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek long int waittime = 1024 * 16; /* in usecs */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_status_t waitret;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek int tries;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek int not_dead_yet;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek int max_daemons;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_mpm_query(AP_MPMQ_MAX_DAEMON_USED, &max_daemons);
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen for (tries = terminate ? 4 : 1; tries <= 9; ++tries) {
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen /* don't want to hold up progress any more than
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * necessary, but we need to allow children a few moments to exit.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * Set delay with an exponential backoff.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_sleep(waittime);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek waittime = waittime * 4;
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen /* now see who is done */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek not_dead_yet = 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek for (i = 0; i < max_daemons; ++i) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek pid_t pid = MPM_CHILD_PID(i);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_proc_t proc;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (pid == 0)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek continue;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek proc.pid = pid;
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen waitret = apr_proc_wait(&proc, NULL, NULL, APR_NOWAIT);
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen if (waitret != APR_CHILD_NOTDONE) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek MPM_NOTE_CHILD_KILLED(i);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek continue;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ++not_dead_yet;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek switch (tries) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 1: /* 16ms */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 2: /* 82ms */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 3: /* 344ms */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 4: /* 16ms */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 5: /* 82ms */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 6: /* 344ms */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 7: /* 1.4sec */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* ok, now it's being annoying */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_WARNING,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek 0, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "child process %ld still did not exit, "
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "sending a SIGTERM",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek (long)pid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek kill(pid, SIGTERM);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case 8: /* 6 sec */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* die child scum */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_ERR,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek 0, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "child process %ld still did not exit, "
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "sending a SIGKILL",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek (long)pid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifndef BEOS
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek kill(pid, SIGKILL);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#else
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* sending a SIGKILL kills the entire team on BeOS, and as
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * httpd thread is part of that team it removes any chance
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * of ever doing a restart. To counter this I'm changing to
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * use a kinder, gentler way of killing a specific thread
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * that is just as effective.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek kill_thread(pid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen case 9: /* 14 sec */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* gave it our best shot, but alas... If this really
102bd40e1ed71c7ab980a90435a1c23d4c786c63Lennart Poettering * is a child we are trying to kill and it really hasn't
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * exited, we will likely fail to bind to the port
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * after the restart.
102bd40e1ed71c7ab980a90435a1c23d4c786c63Lennart Poettering */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_ERR,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek 0, ap_server_conf,
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen "could not make child process %ld exit, "
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "attempting to continue anyway",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek (long)pid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#if APR_HAS_OTHER_CHILD
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_proc_other_child_check();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (!not_dead_yet) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* nothing left to wait for */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif /* AP_MPM_WANT_RECLAIM_CHILD_PROCESSES */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef AP_MPM_WANT_WAIT_OR_TIMEOUT
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen/* number of calls to wait_or_timeout between writable probes */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifndef INTERVAL_OF_WRITABLE_PROBES
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#define INTERVAL_OF_WRITABLE_PROBES 10
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekstatic int wait_or_timeout_counter;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekvoid ap_wait_or_timeout(apr_exit_why_e *status, int *exitcode, apr_proc_t *ret,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_pool_t *p)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_status_t rv;
1c25683e0f40c6169676cc44fa1897082597feecTom Gundersen
a8eaaee72a2f06e0fb64fb71de3b71ecba31dafbJan Engelhardt ++wait_or_timeout_counter;
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt if (wait_or_timeout_counter == INTERVAL_OF_WRITABLE_PROBES) {
1c25683e0f40c6169676cc44fa1897082597feecTom Gundersen wait_or_timeout_counter = 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek rv = apr_proc_wait_all_procs(ret, exitcode, status, APR_NOWAIT, p);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (APR_STATUS_IS_EINTR(rv)) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ret->pid = -1;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt if (APR_STATUS_IS_CHILD_DONE(rv)) {
2e229e0c4c29e8a827be9ffe361741cf5e9aa7afTom Gundersen return;
2e229e0c4c29e8a827be9ffe361741cf5e9aa7afTom Gundersen }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef NEED_WAITPID
66d3752e812915a549ebee01769ee761c1495667Jacob Keller if ((ret = reap_children(exitcode, status)) > 0) {
66d3752e812915a549ebee01769ee761c1495667Jacob Keller return;
66d3752e812915a549ebee01769ee761c1495667Jacob Keller }
66d3752e812915a549ebee01769ee761c1495667Jacob Keller#endif
66d3752e812915a549ebee01769ee761c1495667Jacob Keller
66d3752e812915a549ebee01769ee761c1495667Jacob Keller apr_sleep(SCOREBOARD_MAINTENANCE_INTERVAL);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ret->pid = -1;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif /* AP_MPM_WANT_WAIT_OR_TIMEOUT */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef AP_MPM_WANT_PROCESS_CHILD_STATUS
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekint ap_process_child_status(apr_proc_t *pid, apr_exit_why_e why, int status)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek int signum = status;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek const char *sigdesc = apr_signal_description_get(signum);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* Child died... if it died due to a fatal error,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * we should simply bail out. The caller needs to
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * check for bad rc from us and exit, running any
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * appropriate cleanups.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * If the child died due to a resource shortage,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * the parent should limit the rate of forking
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (APR_PROC_CHECK_EXIT(why)) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (status == APEXIT_CHILDSICK) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return status;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (status == APEXIT_CHILDFATAL) {
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen ap_log_error(APLOG_MARK, APLOG_ALERT,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek 0, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "Child %" APR_PID_T_FMT
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek " returned a Fatal error..." APR_EOL_STR
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "Apache is exiting!",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek pid->pid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return APEXIT_CHILDFATAL;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (APR_PROC_CHECK_SIGNALED(why)) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek switch (signum) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case SIGTERM:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case SIGHUP:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case AP_SIG_GRACEFUL:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek case SIGKILL:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek break;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek default:
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (APR_PROC_CHECK_CORE_DUMP(why)) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_NOTICE,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek 0, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "child pid %ld exit signal %s (%d), "
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "possible coredump in %s",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek (long)pid->pid, sigdesc, signum,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_coredump_dir);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek else {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_NOTICE,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek 0, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "child pid %ld exit signal %s (%d)",
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek (long)pid->pid, sigdesc, signum);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif /* AP_MPM_WANT_PROCESS_CHILD_STATUS */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#if defined(TCP_NODELAY) && !defined(MPE) && !defined(TPF)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekvoid ap_sock_disable_nagle(apr_socket_t *s)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek /* The Nagle algorithm says that we should delay sending partial
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * packets in hopes of getting more data. We don't want to do
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * this; we are not telnet. There are bad interactions between
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * persistent connections and Nagle's algorithm that have very severe
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * performance penalties. (Failing to disable Nagle is not much of a
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * problem with simple HTTP.)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek *
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek * In spite of these problems, failure here is not a shooting offense.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_status_t status = apr_socket_opt_set(s, APR_TCP_NODELAY, 1);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (status != APR_SUCCESS) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_WARNING, status, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "apr_socket_opt_set: (TCP_NODELAY)");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef HAVE_GETPWNAM
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-SzmekAP_DECLARE(uid_t) ap_uname2id(const char *name)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek struct passwd *ent;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (name[0] == '#')
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return (atoi(&name[1]));
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (!(ent = getpwnam(name))) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "%s: bad user name %s", ap_server_argv0, name);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek exit(1);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return (ent->pw_uid);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifdef HAVE_GETGRNAM
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-SzmekAP_DECLARE(gid_t) ap_gname2id(const char *name)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek struct group *ent;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (name[0] == '#')
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return (atoi(&name[1]));
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (!(ent = getgrnam(name))) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "%s: bad group name %s", ap_server_argv0, name);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek exit(1);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return (ent->gr_gid);
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#endif
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#ifndef HAVE_INITGROUPS
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekint initgroups(const char *name, gid_t basegid)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#if defined(QNX) || defined(MPE) || defined(BEOS) || defined(_OSD_POSIX) || defined(TPF) || defined(__TANDEM) || defined(OS2) || defined(WIN32) || defined(NETWARE)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek/* QNX, MPE and BeOS do not appear to support supplementary groups. */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek#else /* ndef QNX */
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek gid_t groups[NGROUPS_MAX];
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek struct group *g;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek int index = 0;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek setgrent();
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek groups[index++] = basegid;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek while (index < NGROUPS_MAX && ((g = getgrent()) != NULL)) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (g->gr_gid != basegid) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek char **names;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek for (names = g->gr_mem; *names != NULL; ++names) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (!strcmp(*names, name))
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek groups[index++] = g->gr_gid;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering endgrent();
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering return setgroups(index, groups);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering#endif /* def QNX */
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering}
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering#endif /* def NEED_INITGROUPS */
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering#ifdef AP_MPM_USES_POD
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart PoetteringAP_DECLARE(apr_status_t) ap_mpm_pod_open(apr_pool_t *p, ap_pod_t **pod)
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering{
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_status_t rv;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering *pod = apr_palloc(p, sizeof(**pod));
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering rv = apr_file_pipe_create(&((*pod)->pod_in), &((*pod)->pod_out), p);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering if (rv != APR_SUCCESS) {
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering return rv;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering }
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_file_pipe_timeout_set((*pod)->pod_in, 0);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering (*pod)->p = p;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_sockaddr_info_get(&(*pod)->sa, ap_listeners->bind_addr->hostname,
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering APR_UNSPEC, ap_listeners->bind_addr->port, 0, p);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering /* close these before exec. */
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_file_unset_inherit((*pod)->pod_in);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_file_unset_inherit((*pod)->pod_out);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering return APR_SUCCESS;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering}
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart PoetteringAP_DECLARE(apr_status_t) ap_mpm_pod_check(ap_pod_t *pod)
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering{
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering char c;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_size_t len = 1;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering apr_status_t rv;
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering rv = apr_file_read(pod->pod_in, &c, &len);
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering if ((rv == APR_SUCCESS) && (len == 1)) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return APR_SUCCESS;
6c1695be47b2830c79e128e4d05d760eb862184eLennart Poettering }
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering if (rv != APR_SUCCESS) {
b97e7fabaeaf12c88d6a10b2bfead54a77812105Lennart Poettering return rv;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
7abaad1ab099b077ebd6452b14ef351483831245poma
7abaad1ab099b077ebd6452b14ef351483831245poma return AP_NORESTART;
7abaad1ab099b077ebd6452b14ef351483831245poma}
7abaad1ab099b077ebd6452b14ef351483831245poma
7abaad1ab099b077ebd6452b14ef351483831245pomaAP_DECLARE(apr_status_t) ap_mpm_pod_close(ap_pod_t *pod)
7abaad1ab099b077ebd6452b14ef351483831245poma{
7abaad1ab099b077ebd6452b14ef351483831245poma apr_status_t rv;
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen
7abaad1ab099b077ebd6452b14ef351483831245poma rv = apr_file_close(pod->pod_out);
7abaad1ab099b077ebd6452b14ef351483831245poma if (rv != APR_SUCCESS) {
7abaad1ab099b077ebd6452b14ef351483831245poma return rv;
7abaad1ab099b077ebd6452b14ef351483831245poma }
7abaad1ab099b077ebd6452b14ef351483831245poma
7abaad1ab099b077ebd6452b14ef351483831245poma rv = apr_file_close(pod->pod_in);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (rv != APR_SUCCESS) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return rv;
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return APR_SUCCESS;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek}
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmekstatic apr_status_t pod_signal_internal(ap_pod_t *pod)
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek{
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_status_t rv;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek char char_of_death = '!';
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek apr_size_t one = 1;
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek rv = apr_file_write(pod->pod_out, &char_of_death, &one);
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek if (rv != APR_SUCCESS) {
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek "write pipe_of_death");
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek }
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek return rv;
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen}
1ff28eaee33d9d0cee46bd176b6d6f8805c95036Tom Gundersen
/* This function connects to the server, then immediately closes the connection.
* This permits the MPM to skip the poll when there is only one listening
* socket, because it provides a alternate way to unblock an accept() when
* the pod is used.
*/
static apr_status_t dummy_connection(ap_pod_t *pod)
{
apr_status_t rv;
apr_socket_t *sock;
apr_pool_t *p;
/* create a temporary pool for the socket. pconf stays around too long */
rv = apr_pool_create(&p, pod->p);
if (rv != APR_SUCCESS) {
return rv;
}
rv = apr_socket_create(&sock, pod->sa->family, SOCK_STREAM, p);
if (rv != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
"get socket to connect to listener");
return rv;
}
/* on some platforms (e.g., FreeBSD), the kernel won't accept many
* queued connections before it starts blocking local connects...
* we need to keep from blocking too long and instead return an error,
* because the MPM won't want to hold up a graceful restart for a
* long time
*/
rv = apr_socket_timeout_set(sock, apr_time_from_sec(3));
if (rv != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
"set timeout on socket to connect to listener");
apr_socket_close(sock);
return rv;
}
rv = apr_connect(sock, pod->sa);
if (rv != APR_SUCCESS) {
int log_level = APLOG_WARNING;
if (APR_STATUS_IS_TIMEUP(rv)) {
/* probably some server processes bailed out already and there
* is nobody around to call accept and clear out the kernel
* connection queue; usually this is not worth logging
*/
log_level = APLOG_DEBUG;
}
ap_log_error(APLOG_MARK, log_level, rv, ap_server_conf,
"connect to listener");
}
apr_socket_close(sock);
apr_pool_destroy(p);
return rv;
}
AP_DECLARE(apr_status_t) ap_mpm_pod_signal(ap_pod_t *pod)
{
apr_status_t rv;
rv = pod_signal_internal(pod);
if (rv != APR_SUCCESS) {
return rv;
}
return dummy_connection(pod);
}
void ap_mpm_pod_killpg(ap_pod_t *pod, int num)
{
int i;
apr_status_t rv = APR_SUCCESS;
/* we don't write anything to the pod here... we assume
* that the would-be reader of the pod has another way to
* see that it is time to die once we wake it up
*
* writing lots of things to the pod at once is very
* problematic... we can fill the kernel pipe buffer and
* be blocked until somebody consumes some bytes or
* we hit a timeout... if we hit a timeout we can't just
* keep trying because maybe we'll never successfully
* write again... but then maybe we'll leave would-be
* readers stranded (a number of them could be tied up for
* a while serving time-consuming requests)
*/
for (i = 0; i < num && rv == APR_SUCCESS; i++) {
rv = dummy_connection(pod);
}
}
#endif /* #ifdef AP_MPM_USES_POD */
/* standard mpm configuration handling */
#ifdef AP_MPM_WANT_SET_PIDFILE
const char *ap_pid_fname = NULL;
const char *ap_mpm_set_pidfile(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if (cmd->server->is_virtual) {
return "PidFile directive not allowed in <VirtualHost>";
}
ap_pid_fname = arg;
return NULL;
}
#endif
#ifdef AP_MPM_WANT_SET_SCOREBOARD
const char * ap_mpm_set_scoreboard(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_scoreboard_fname = arg;
return NULL;
}
#endif
#ifdef AP_MPM_WANT_SET_LOCKFILE
const char *ap_lock_fname = NULL;
const char *ap_mpm_set_lockfile(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_lock_fname = arg;
return NULL;
}
#endif
#ifdef AP_MPM_WANT_SET_MAX_REQUESTS
int ap_max_requests_per_child = 0;
const char *ap_mpm_set_max_requests(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_max_requests_per_child = atoi(arg);
return NULL;
}
#endif
#ifdef AP_MPM_WANT_SET_COREDUMPDIR
char ap_coredump_dir[MAX_STRING_LEN];
int ap_coredumpdir_configured;
const char *ap_mpm_set_coredumpdir(cmd_parms *cmd, void *dummy,
const char *arg)
{
apr_status_t rv;
apr_finfo_t finfo;
const char *fname;
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
fname = ap_server_root_relative(cmd->pool, arg);
if (!fname) {
return apr_pstrcat(cmd->pool, "Invalid CoreDumpDirectory path ",
arg, NULL);
}
if ((rv = apr_stat(&finfo, fname, APR_FINFO_TYPE, cmd->pool)) != APR_SUCCESS) {
return apr_pstrcat(cmd->pool, "CoreDumpDirectory ", fname,
" does not exist", NULL);
}
if (finfo.filetype != APR_DIR) {
return apr_pstrcat(cmd->pool, "CoreDumpDirectory ", fname,
" is not a directory", NULL);
}
apr_cpystrn(ap_coredump_dir, fname, sizeof(ap_coredump_dir));
ap_coredumpdir_configured = 1;
return NULL;
}
#endif
#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
apr_lockmech_e ap_accept_lock_mech = APR_LOCK_DEFAULT;
const char ap_valid_accept_mutex_string[] =
"Valid accept mutexes for this platform and MPM are: default"
#if APR_HAS_FLOCK_SERIALIZE
", flock"
#endif
#if APR_HAS_FCNTL_SERIALIZE
", fcntl"
#endif
#if APR_HAS_SYSVSEM_SERIALIZE && !defined(PERCHILD_MPM)
", sysvsem"
#endif
#if APR_HAS_POSIXSEM_SERIALIZE
", posixsem"
#endif
#if APR_HAS_PROC_PTHREAD_SERIALIZE
", pthread"
#endif
".";
AP_DECLARE(const char *) ap_mpm_set_accept_lock_mech(cmd_parms *cmd,
void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if (!strcasecmp(arg, "default")) {
ap_accept_lock_mech = APR_LOCK_DEFAULT;
}
#if APR_HAS_FLOCK_SERIALIZE
else if (!strcasecmp(arg, "flock")) {
ap_accept_lock_mech = APR_LOCK_FLOCK;
}
#endif
#if APR_HAS_FCNTL_SERIALIZE
else if (!strcasecmp(arg, "fcntl")) {
ap_accept_lock_mech = APR_LOCK_FCNTL;
}
#endif
/* perchild can't use SysV sems because the permissions on the accept
* mutex can't be set to allow all processes to use the mutex and
* at the same time keep all users from being able to dink with the
* mutex
*/
#if APR_HAS_SYSVSEM_SERIALIZE && !defined(PERCHILD_MPM)
else if (!strcasecmp(arg, "sysvsem")) {
ap_accept_lock_mech = APR_LOCK_SYSVSEM;
}
#endif
#if APR_HAS_POSIXSEM_SERIALIZE
else if (!strcasecmp(arg, "posixsem")) {
ap_accept_lock_mech = APR_LOCK_POSIXSEM;
}
#endif
#if APR_HAS_PROC_PTHREAD_SERIALIZE
else if (!strcasecmp(arg, "pthread")) {
ap_accept_lock_mech = APR_LOCK_PROC_PTHREAD;
}
#endif
else {
return apr_pstrcat(cmd->pool, arg, " is an invalid mutex mechanism; ",
ap_valid_accept_mutex_string, NULL);
}
return NULL;
}
#endif
#ifdef AP_MPM_WANT_SIGNAL_SERVER
static const char *dash_k_arg;
static int send_signal(pid_t pid, int sig)
{
if (kill(pid, sig) < 0) {
ap_log_error(APLOG_MARK, APLOG_STARTUP, errno, NULL,
"sending signal to server");
return 1;
}
return 0;
}
int ap_signal_server(int *exit_status, apr_pool_t *pconf)
{
apr_status_t rv;
pid_t otherpid;
int running = 0;
int have_pid_file = 0;
const char *status;
*exit_status = 0;
rv = ap_read_pid(pconf, ap_pid_fname, &otherpid);
if (rv != APR_SUCCESS) {
if (rv != APR_ENOENT) {
ap_log_error(APLOG_MARK, APLOG_STARTUP, rv, NULL,
"Error retrieving pid file %s", ap_pid_fname);
*exit_status = 1;
return 1;
}
status = "httpd (no pid file) not running";
}
else {
have_pid_file = 1;
if (kill(otherpid, 0) == 0) {
running = 1;
status = apr_psprintf(pconf,
"httpd (pid %" APR_PID_T_FMT ") already "
"running", otherpid);
}
else {
status = apr_psprintf(pconf,
"httpd (pid %" APR_PID_T_FMT "?) not running",
otherpid);
}
}
if (!strcmp(dash_k_arg, "start")) {
if (running) {
printf("%s\n", status);
return 1;
}
}
if (!strcmp(dash_k_arg, "stop")) {
if (!running) {
printf("%s\n", status);
}
else {
send_signal(otherpid, SIGTERM);
}
return 1;
}
if (!strcmp(dash_k_arg, "restart")) {
if (!running) {
printf("httpd not running, trying to start\n");
}
else {
*exit_status = send_signal(otherpid, SIGHUP);
return 1;
}
}
if (!strcmp(dash_k_arg, "graceful")) {
if (!running) {
printf("httpd not running, trying to start\n");
}
else {
*exit_status = send_signal(otherpid, SIGUSR1);
return 1;
}
}
return 0;
}
void ap_mpm_rewrite_args(process_rec *process)
{
apr_array_header_t *mpm_new_argv;
apr_status_t rv;
apr_getopt_t *opt;
char optbuf[3];
const char *optarg;
int fixed_args;
mpm_new_argv = apr_array_make(process->pool, process->argc,
sizeof(const char **));
*(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
fixed_args = mpm_new_argv->nelts;
apr_getopt_init(&opt, process->pool, process->argc, process->argv);
opt->errfn = NULL;
optbuf[0] = '-';
/* option char returned by apr_getopt() will be stored in optbuf[1] */
optbuf[2] = '\0';
while ((rv = apr_getopt(opt, "k:" AP_SERVER_BASEARGS,
optbuf + 1, &optarg)) == APR_SUCCESS) {
switch(optbuf[1]) {
case 'k':
if (!dash_k_arg) {
if (!strcmp(optarg, "start") || !strcmp(optarg, "stop") ||
!strcmp(optarg, "restart") || !strcmp(optarg, "graceful")) {
dash_k_arg = optarg;
break;
}
}
default:
*(const char **)apr_array_push(mpm_new_argv) =
apr_pstrdup(process->pool, optbuf);
if (optarg) {
*(const char **)apr_array_push(mpm_new_argv) = optarg;
}
}
}
/* back up to capture the bad argument */
if (rv == APR_BADCH || rv == APR_BADARG) {
opt->ind--;
}
while (opt->ind < opt->argc) {
*(const char **)apr_array_push(mpm_new_argv) =
apr_pstrdup(process->pool, opt->argv[opt->ind++]);
}
process->argc = mpm_new_argv->nelts;
process->argv = (const char * const *)mpm_new_argv->elts;
if (dash_k_arg) {
APR_REGISTER_OPTIONAL_FN(ap_signal_server);
}
}
#endif /* AP_MPM_WANT_SIGNAL_SERVER */
#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
apr_uint32_t ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
const char *ap_mpm_set_max_mem_free(cmd_parms *cmd, void *dummy,
const char *arg)
{
long value;
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
value = strtol(arg, NULL, 0);
if (value < 0 || errno == ERANGE)
return apr_pstrcat(cmd->pool, "Invalid MaxMemFree value: ",
arg, NULL);
ap_max_mem_free = (apr_uint32_t)value * 1024;
return NULL;
}
#endif /* AP_MPM_WANT_SET_MAX_MEM_FREE */
#ifdef AP_MPM_WANT_FATAL_SIGNAL_HANDLER
static pid_t parent_pid, my_pid;
apr_pool_t *pconf;
/* handle all varieties of core dumping signals */
static void sig_coredump(int sig)
{
apr_filepath_set(ap_coredump_dir, pconf);
apr_signal(sig, SIG_DFL);
if (my_pid == parent_pid) {
ap_log_error(APLOG_MARK, APLOG_NOTICE,
0, ap_server_conf,
"seg fault or similar nasty error detected "
"in the parent process");
/* XXX we can probably add some rudimentary cleanup code here,
* like getting rid of the pid file. If any additional bad stuff
* happens, we are protected from recursive errors taking down the
* system since this function is no longer the signal handler GLA
*/
}
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.
*/
}
apr_status_t ap_fatal_signal_child_setup(server_rec *s)
{
my_pid = getpid();
return APR_SUCCESS;
}
apr_status_t ap_fatal_signal_setup(server_rec *s, apr_pool_t *in_pconf)
{
#ifndef NO_USE_SIGACTION
struct sigaction sa;
sigemptyset(&sa.sa_mask);
#if defined(SA_ONESHOT)
sa.sa_flags = SA_ONESHOT;
#elif defined(SA_RESETHAND)
sa.sa_flags = SA_RESETHAND;
#else
sa.sa_flags = 0;
#endif
sa.sa_handler = sig_coredump;
if (sigaction(SIGSEGV, &sa, NULL) < 0)
ap_log_error(APLOG_MARK, APLOG_WARNING, errno, s, "sigaction(SIGSEGV)");
#ifdef SIGBUS
if (sigaction(SIGBUS, &sa, NULL) < 0)
ap_log_error(APLOG_MARK, APLOG_WARNING, errno, s, "sigaction(SIGBUS)");
#endif
#ifdef SIGABORT
if (sigaction(SIGABORT, &sa, NULL) < 0)
ap_log_error(APLOG_MARK, APLOG_WARNING, errno, s, "sigaction(SIGABORT)");
#endif
#ifdef SIGABRT
if (sigaction(SIGABRT, &sa, NULL) < 0)
ap_log_error(APLOG_MARK, APLOG_WARNING, errno, s, "sigaction(SIGABRT)");
#endif
#ifdef SIGILL
if (sigaction(SIGILL, &sa, NULL) < 0)
ap_log_error(APLOG_MARK, APLOG_WARNING, errno, s, "sigaction(SIGILL)");
#endif
#else /* NO_USE_SIGACTION */
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 */
#endif /* NO_USE_SIGACTION */
pconf = in_pconf;
parent_pid = my_pid = getpid();
return APR_SUCCESS;
}
#endif /* AP_MPM_WANT_FATAL_SIGNAL_HANDLER */