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Diffstat (limited to 'www/apache22/files/mpm-itk-20110321-01')
| -rw-r--r-- | www/apache22/files/mpm-itk-20110321-01 | 2112 |
1 files changed, 2112 insertions, 0 deletions
diff --git a/www/apache22/files/mpm-itk-20110321-01 b/www/apache22/files/mpm-itk-20110321-01 new file mode 100644 index 000000000000..931d354e05d7 --- /dev/null +++ b/www/apache22/files/mpm-itk-20110321-01 @@ -0,0 +1,2112 @@ +vim: syntax=diff + +Monolithic mpm-itk patch version 2.2.17-01 updated 2011-03-21 + +The Apache 2 ITK MPM + +apache2-mpm-itk (just mpm-itk for short) is an MPM (Multi-Processing Module) +for the Apache web server. mpm-itk allows you to run each of your vhost +under a separate uid and gid . in short, the scripts and configuration files +for one vhost no longer have to be readable for all the other vhosts. + +mpm-itk is based on the traditional prefork MPM, which means it's +non-threaded; in short, this means you can run non-thread-aware code (like +many PHP extensions) without problems. On the other hand, you lose out to +any performance benefit you'd get with threads, of course; you'd have to +decide for yourself if that's worth it or not. You will also take an +additional performance hit over prefork, since there's an extra fork per +request. + +Licensing: + mpm-itk is licensed under the Apache License, version 2.0, + like the rest of Apache. + +For more Informations and Instructions please visit the official webpage. + +WWW: http://mpm-itk.sesse.net/ + +=========================================================================== +unchanged: +--- server/mpm/experimental/itk/Makefile.in ++++ server/mpm/experimental/itk/Makefile.in +@@ -0,0 +1,5 @@ ++ ++LTLIBRARY_NAME = libitk.la ++LTLIBRARY_SOURCES = itk.c ++ ++include $(top_srcdir)/build/ltlib.mk +unchanged: +--- server/mpm/experimental/itk/config.m4 ++++ server/mpm/experimental/itk/config.m4 +@@ -0,0 +1,3 @@ ++if test "$MPM_NAME" = "itk" ; then ++ APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile) ++fi +unchanged: +--- server/mpm/experimental/itk/itk.c ++++ server/mpm/experimental/itk/itk.c +@@ -0,0 +1,1757 @@ ++/* Licensed to the Apache Software Foundation (ASF) under one or more ++ * contributor license agreements. See the NOTICE file distributed with ++ * this work for additional information regarding copyright ownership. ++ * The ASF licenses this file to You under the Apache License, Version 2.0 ++ * (the "License"); you may not use this file except in compliance with ++ * the License. You may obtain a copy of the License at ++ * ++ * http://www.apache.org/licenses/LICENSE-2.0 ++ * ++ * Unless required by applicable law or agreed to in writing, software ++ * distributed under the License is distributed on an "AS IS" BASIS, ++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ++ * See the License for the specific language governing permissions and ++ * limitations under the License. ++ * ++ * Portions copyright 2005-2009 Steinar H. Gunderson <sgunderson@bigfoot.com>. ++ * Licensed under the same terms as the rest of Apache. ++ * ++ * Portions copyright 2008 Knut Auvor Grythe <knut@auvor.no>. ++ * Licensed under the same terms as the rest of Apache. ++ */ ++ ++#include "apr.h" ++#include "apr_portable.h" ++#include "apr_strings.h" ++#include "apr_thread_proc.h" ++#include "apr_signal.h" ++ ++# define _DBG(text,par...) \ ++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, \ ++ "(itkmpm: pid=%d uid=%d, gid=%d) %s(): " text, \ ++ getpid(), getuid(), getgid(), __FUNCTION__, par) ++ ++#define APR_WANT_STDIO ++#define APR_WANT_STRFUNC ++#include "apr_want.h" ++ ++#if APR_HAVE_UNISTD_H ++#include <unistd.h> ++#endif ++#if APR_HAVE_SYS_TYPES_H ++#include <sys/types.h> ++#endif ++ ++#define CORE_PRIVATE ++ ++#include "ap_config.h" ++#include "httpd.h" ++#include "mpm_default.h" ++#include "http_main.h" ++#include "http_log.h" ++#include "http_config.h" ++#include "http_core.h" /* for get_remote_host */ ++#include "http_connection.h" ++#include "http_request.h" /* for ap_hook_post_perdir_config */ ++#include "scoreboard.h" ++#include "ap_mpm.h" ++#include "unixd.h" ++#include "mpm_common.h" ++#include "ap_listen.h" ++#include "ap_mmn.h" ++#include "apr_poll.h" ++ ++#ifdef HAVE_BSTRING_H ++#include <bstring.h> /* for IRIX, FD_SET calls bzero() */ ++#endif ++#ifdef HAVE_TIME_H ++#include <time.h> ++#endif ++#ifdef HAVE_SYS_PROCESSOR_H ++#include <sys/processor.h> /* for bindprocessor() */ ++#endif ++ ++#if HAVE_LIBCAP ++#include <sys/capability.h> ++#endif ++ ++#include <signal.h> ++#include <sys/times.h> ++ ++/* Limit on the total --- clients will be locked out if more servers than ++ * this are needed. It is intended solely to keep the server from crashing ++ * when things get out of hand. ++ * ++ * We keep a hard maximum number of servers, for two reasons --- first off, ++ * in case something goes seriously wrong, we want to stop the fork bomb ++ * short of actually crashing the machine we're running on by filling some ++ * kernel table. Secondly, it keeps the size of the scoreboard file small ++ * enough that we can read the whole thing without worrying too much about ++ * the overhead. ++ */ ++#ifndef DEFAULT_SERVER_LIMIT ++#define DEFAULT_SERVER_LIMIT 256 ++#endif ++ ++/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT. We want ++ * some sort of compile-time limit to help catch typos. ++ */ ++#ifndef MAX_SERVER_LIMIT ++#define MAX_SERVER_LIMIT 200000 ++#endif ++ ++#ifndef HARD_THREAD_LIMIT ++#define HARD_THREAD_LIMIT 1 ++#endif ++ ++/* config globals */ ++ ++int ap_threads_per_child=0; /* Worker threads per child */ ++static apr_proc_mutex_t *accept_mutex; ++static int ap_daemons_to_start=0; ++static int ap_daemons_min_free=0; ++static int ap_daemons_max_free=0; ++static int ap_daemons_limit=0; /* MaxClients */ ++static int server_limit = DEFAULT_SERVER_LIMIT; ++static int first_server_limit = 0; ++static int changed_limit_at_restart; ++static int mpm_state = AP_MPMQ_STARTING; ++static ap_pod_t *pod; ++ ++/* ++ * The max child slot ever assigned, preserved across restarts. Necessary ++ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts. We ++ * use this value to optimize routines that have to scan the entire scoreboard. ++ */ ++int ap_max_daemons_limit = -1; ++server_rec *ap_server_conf; ++ ++/* one_process --- debugging mode variable; can be set from the command line ++ * with the -X flag. If set, this gets you the child_main loop running ++ * in the process which originally started up (no detach, no make_child), ++ * which is a pretty nice debugging environment. (You'll get a SIGHUP ++ * early in standalone_main; just continue through. This is the server ++ * trying to kill off any child processes which it might have lying ++ * around --- Apache doesn't keep track of their pids, it just sends ++ * SIGHUP to the process group, ignoring it in the root process. ++ * Continue through and you'll be fine.). ++ */ ++ ++static int one_process = 0; ++ ++static apr_pool_t *pconf; /* Pool for config stuff */ ++static apr_pool_t *pchild; /* Pool for httpd child stuff */ ++ ++static pid_t ap_my_pid; /* it seems silly to call getpid all the time */ ++static pid_t parent_pid; ++#ifndef MULTITHREAD ++static int my_child_num; ++#endif ++ap_generation_t volatile ap_my_generation=0; ++ ++#ifdef TPF ++int tpf_child = 0; ++char tpf_server_name[INETD_SERVNAME_LENGTH+1]; ++#endif /* TPF */ ++ ++static volatile int die_now = 0; ++ ++#define UNSET_NICE_VALUE 100 ++ ++typedef struct ++{ ++ uid_t uid; ++ gid_t gid; ++ char *username; ++ int nice_value; ++} itk_per_dir_conf; ++ ++typedef struct ++{ ++ int max_clients_vhost; ++} itk_server_conf; ++ ++module AP_MODULE_DECLARE_DATA mpm_itk_module; ++ ++#ifdef GPROF ++/* ++ * change directory for gprof to plop the gmon.out file ++ * configure in httpd.conf: ++ * GprofDir $RuntimeDir/ -> $ServerRoot/$RuntimeDir/gmon.out ++ * GprofDir $RuntimeDir/% -> $ServerRoot/$RuntimeDir/gprof.$pid/gmon.out ++ */ ++static void chdir_for_gprof(void) ++{ ++ core_server_config *sconf = ++ ap_get_module_config(ap_server_conf->module_config, &core_module); ++ char *dir = sconf->gprof_dir; ++ const char *use_dir; ++ ++ if(dir) { ++ apr_status_t res; ++ char *buf = NULL ; ++ int len = strlen(sconf->gprof_dir) - 1; ++ if(*(dir + len) == '%') { ++ dir[len] = '\0'; ++ buf = ap_append_pid(pconf, dir, "gprof."); ++ } ++ use_dir = ap_server_root_relative(pconf, buf ? buf : dir); ++ res = apr_dir_make(use_dir, ++ APR_UREAD | APR_UWRITE | APR_UEXECUTE | ++ APR_GREAD | APR_GEXECUTE | ++ APR_WREAD | APR_WEXECUTE, pconf); ++ if(res != APR_SUCCESS && !APR_STATUS_IS_EEXIST(res)) { ++ ap_log_error(APLOG_MARK, APLOG_ERR, res, ap_server_conf, ++ "gprof: error creating directory %s", dir); ++ } ++ } ++ else { ++ use_dir = ap_server_root_relative(pconf, DEFAULT_REL_RUNTIMEDIR); ++ } ++ ++ chdir(use_dir); ++} ++#else ++#define chdir_for_gprof() ++#endif ++ ++/* XXX - I don't know if TPF will ever use this module or not, so leave ++ * the ap_check_signals calls in but disable them - manoj */ ++#define ap_check_signals() ++ ++/* a clean exit from a child with proper cleanup */ ++static void clean_child_exit(int code) __attribute__ ((noreturn)); ++static void clean_child_exit(int code) ++{ ++ mpm_state = AP_MPMQ_STOPPING; ++ ++ if (pchild) { ++ apr_pool_destroy(pchild); ++ } ++ ap_mpm_pod_close(pod); ++ chdir_for_gprof(); ++ exit(code); ++} ++ ++static void accept_mutex_on(void) ++{ ++ apr_status_t rv = apr_proc_mutex_lock(accept_mutex); ++ if (rv != APR_SUCCESS) { ++ const char *msg = "couldn't grab the accept mutex"; ++ ++ if (ap_my_generation != ++ ap_scoreboard_image->global->running_generation) { ++ ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL, "%s", msg); ++ clean_child_exit(0); ++ } ++ else { ++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, "%s", msg); ++ exit(APEXIT_CHILDFATAL); ++ } ++ } ++} ++ ++static void accept_mutex_off(void) ++{ ++ apr_status_t rv = apr_proc_mutex_unlock(accept_mutex); ++ if (rv != APR_SUCCESS) { ++ const char *msg = "couldn't release the accept mutex"; ++ ++ if (ap_my_generation != ++ ap_scoreboard_image->global->running_generation) { ++ ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL, "%s", msg); ++ /* don't exit here... we have a connection to ++ * process, after which point we'll see that the ++ * generation changed and we'll exit cleanly ++ */ ++ } ++ else { ++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, "%s", msg); ++ exit(APEXIT_CHILDFATAL); ++ } ++ } ++} ++ ++/* On some architectures it's safe to do unserialized accept()s in the single ++ * Listen case. But it's never safe to do it in the case where there's ++ * multiple Listen statements. Define SINGLE_LISTEN_UNSERIALIZED_ACCEPT ++ * when it's safe in the single Listen case. ++ */ ++#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT ++#define SAFE_ACCEPT(stmt) do {if (ap_listeners->next) {stmt;}} while(0) ++#else ++#define SAFE_ACCEPT(stmt) do {stmt;} while(0) ++#endif ++ ++AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result) ++{ ++ switch(query_code){ ++ case AP_MPMQ_MAX_DAEMON_USED: ++ *result = ap_daemons_limit; ++ return APR_SUCCESS; ++ case AP_MPMQ_IS_THREADED: ++ *result = AP_MPMQ_NOT_SUPPORTED; ++ return APR_SUCCESS; ++ case AP_MPMQ_IS_FORKED: ++ *result = AP_MPMQ_DYNAMIC; ++ return APR_SUCCESS; ++ case AP_MPMQ_HARD_LIMIT_DAEMONS: ++ *result = server_limit; ++ return APR_SUCCESS; ++ case AP_MPMQ_HARD_LIMIT_THREADS: ++ *result = HARD_THREAD_LIMIT; ++ return APR_SUCCESS; ++ case AP_MPMQ_MAX_THREADS: ++ *result = 0; ++ return APR_SUCCESS; ++ case AP_MPMQ_MIN_SPARE_DAEMONS: ++ *result = ap_daemons_min_free; ++ return APR_SUCCESS; ++ case AP_MPMQ_MIN_SPARE_THREADS: ++ *result = 0; ++ return APR_SUCCESS; ++ case AP_MPMQ_MAX_SPARE_DAEMONS: ++ *result = ap_daemons_max_free; ++ return APR_SUCCESS; ++ case AP_MPMQ_MAX_SPARE_THREADS: ++ *result = 0; ++ return APR_SUCCESS; ++ case AP_MPMQ_MAX_REQUESTS_DAEMON: ++ *result = ap_max_requests_per_child; ++ return APR_SUCCESS; ++ case AP_MPMQ_MAX_DAEMONS: ++ *result = server_limit; ++ return APR_SUCCESS; ++ case AP_MPMQ_MPM_STATE: ++ *result = mpm_state; ++ return APR_SUCCESS; ++ } ++ return APR_ENOTIMPL; ++} ++ ++#if defined(NEED_WAITPID) ++/* ++ Systems without a real waitpid sometimes lose a child's exit while waiting ++ for another. Search through the scoreboard for missing children. ++ */ ++int reap_children(int *exitcode, apr_exit_why_e *status) ++{ ++ int n, pid; ++ ++ for (n = 0; n < ap_max_daemons_limit; ++n) { ++ if (ap_scoreboard_image->servers[n][0].status != SERVER_DEAD && ++ kill((pid = ap_scoreboard_image->parent[n].pid), 0) == -1) { ++ ap_update_child_status_from_indexes(n, 0, SERVER_DEAD, NULL); ++ /* just mark it as having a successful exit status */ ++ *status = APR_PROC_EXIT; ++ *exitcode = 0; ++ return(pid); ++ } ++ } ++ return 0; ++} ++#endif ++ ++/***************************************************************** ++ * Connection structures and accounting... ++ */ ++ ++static void just_die(int sig) ++{ ++ clean_child_exit(0); ++} ++ ++static void stop_listening(int sig) ++{ ++ ap_close_listeners(); ++ ++ /* For a graceful stop, we want the child to exit when done */ ++ die_now = 1; ++} ++ ++/* volatile just in case */ ++static int volatile shutdown_pending; ++static int volatile restart_pending; ++static int volatile is_graceful; ++ ++static void sig_term(int sig) ++{ ++ if (shutdown_pending == 1) { ++ /* Um, is this _probably_ not an error, if the user has ++ * tried to do a shutdown twice quickly, so we won't ++ * worry about reporting it. ++ */ ++ return; ++ } ++ shutdown_pending = 1; ++ is_graceful = (sig == AP_SIG_GRACEFUL_STOP); ++} ++ ++/* restart() is the signal handler for SIGHUP and AP_SIG_GRACEFUL ++ * in the parent process, unless running in ONE_PROCESS mode ++ */ ++static void restart(int sig) ++{ ++ if (restart_pending == 1) { ++ /* Probably not an error - don't bother reporting it */ ++ return; ++ } ++ restart_pending = 1; ++ is_graceful = (sig == AP_SIG_GRACEFUL); ++} ++ ++static void set_signals(void) ++{ ++#ifndef NO_USE_SIGACTION ++ struct sigaction sa; ++#endif ++ ++ if (!one_process) { ++ ap_fatal_signal_setup(ap_server_conf, pconf); ++ } ++ ++#ifndef NO_USE_SIGACTION ++ sigemptyset(&sa.sa_mask); ++ sa.sa_flags = 0; ++ ++ sa.sa_handler = sig_term; ++ if (sigaction(SIGTERM, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)"); ++#ifdef AP_SIG_GRACEFUL_STOP ++ if (sigaction(AP_SIG_GRACEFUL_STOP, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, ++ "sigaction(" AP_SIG_GRACEFUL_STOP_STRING ")"); ++#endif ++#ifdef SIGINT ++ if (sigaction(SIGINT, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)"); ++#endif ++#ifdef SIGXCPU ++ sa.sa_handler = SIG_DFL; ++ if (sigaction(SIGXCPU, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXCPU)"); ++#endif ++#ifdef SIGXFSZ ++ sa.sa_handler = SIG_DFL; ++ if (sigaction(SIGXFSZ, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXFSZ)"); ++#endif ++#ifdef SIGPIPE ++ sa.sa_handler = SIG_IGN; ++ if (sigaction(SIGPIPE, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGPIPE)"); ++#endif ++ ++ /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy ++ * processing one ++ */ ++ sigaddset(&sa.sa_mask, SIGHUP); ++ sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL); ++ sa.sa_handler = restart; ++ if (sigaction(SIGHUP, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)"); ++ if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0) ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(" AP_SIG_GRACEFUL_STRING ")"); ++#else ++ if (!one_process) { ++#ifdef SIGXCPU ++ apr_signal(SIGXCPU, SIG_DFL); ++#endif /* SIGXCPU */ ++#ifdef SIGXFSZ ++ apr_signal(SIGXFSZ, SIG_DFL); ++#endif /* SIGXFSZ */ ++ } ++ ++ apr_signal(SIGTERM, sig_term); ++#ifdef SIGHUP ++ apr_signal(SIGHUP, restart); ++#endif /* SIGHUP */ ++#ifdef AP_SIG_GRACEFUL ++ apr_signal(AP_SIG_GRACEFUL, restart); ++#endif /* AP_SIG_GRACEFUL */ ++#ifdef AP_SIG_GRACEFUL_STOP ++ apr_signal(AP_SIG_GRACEFUL_STOP, sig_term); ++#endif /* AP_SIG_GRACEFUL */ ++#ifdef SIGPIPE ++ apr_signal(SIGPIPE, SIG_IGN); ++#endif /* SIGPIPE */ ++ ++#endif ++} ++ ++/***************************************************************** ++ * Child process main loop. ++ * The following vars are static to avoid getting clobbered by longjmp(); ++ * they are really private to child_main. ++ */ ++ ++static int requests_this_child; ++static int num_listensocks = 0; ++ ++ ++int ap_graceful_stop_signalled(void) ++{ ++ /* not ever called anymore... */ ++ return 0; ++} ++ ++ ++static void child_main(int child_num_arg) ++{ ++ apr_pool_t *ptrans; ++ apr_allocator_t *allocator; ++ apr_status_t status; ++ int i; ++ ap_listen_rec *lr; ++ apr_pollset_t *pollset; ++ ap_sb_handle_t *sbh; ++ apr_bucket_alloc_t *bucket_alloc; ++ int last_poll_idx = 0; ++ ++#if HAVE_LIBCAP ++ cap_t caps; ++ cap_value_t suidcaps[] = { ++ CAP_SETUID, ++ CAP_SETGID, ++ CAP_DAC_READ_SEARCH, ++ CAP_SYS_NICE, ++ }; ++#endif ++ ++ mpm_state = AP_MPMQ_STARTING; /* for benefit of any hooks that run as this ++ * child initializes ++ */ ++ ++ my_child_num = child_num_arg; ++ ap_my_pid = getpid(); ++ requests_this_child = 0; ++ ++ ap_fatal_signal_child_setup(ap_server_conf); ++ ++ /* Get a sub context for global allocations in this child, so that ++ * we can have cleanups occur when the child exits. ++ */ ++ apr_allocator_create(&allocator); ++ apr_allocator_max_free_set(allocator, ap_max_mem_free); ++ apr_pool_create_ex(&pchild, pconf, NULL, allocator); ++ apr_allocator_owner_set(allocator, pchild); ++ ++ apr_pool_create(&ptrans, pchild); ++ apr_pool_tag(ptrans, "transaction"); ++ ++ /* needs to be done before we switch UIDs so we have permissions */ ++ ap_reopen_scoreboard(pchild, NULL, 0); ++ status = apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname, pchild); ++ if (status != APR_SUCCESS) { ++ ap_log_error(APLOG_MARK, APLOG_EMERG, status, ap_server_conf, ++ "Couldn't initialize cross-process lock in child " ++ "(%s) (%d)", ap_lock_fname, ap_accept_lock_mech); ++ clean_child_exit(APEXIT_CHILDFATAL); ++ } ++ ++ ap_run_child_init(pchild, ap_server_conf); ++ ++ ap_create_sb_handle(&sbh, pchild, my_child_num, 0); ++ ++ (void) ap_update_child_status(sbh, SERVER_READY, (request_rec *) NULL); ++ ++ /* Set up the pollfd array */ ++ status = apr_pollset_create(&pollset, num_listensocks, pchild, 0); ++ if (status != APR_SUCCESS) { ++ ap_log_error(APLOG_MARK, APLOG_EMERG, status, ap_server_conf, ++ "Couldn't create pollset in child; check system or user limits"); ++ clean_child_exit(APEXIT_CHILDSICK); /* assume temporary resource issue */ ++ } ++ ++ for (lr = ap_listeners, i = num_listensocks; i--; lr = lr->next) { ++ apr_pollfd_t pfd = { 0 }; ++ ++ pfd.desc_type = APR_POLL_SOCKET; ++ pfd.desc.s = lr->sd; ++ pfd.reqevents = APR_POLLIN; ++ pfd.client_data = lr; ++ ++ /* ### check the status */ ++ (void) apr_pollset_add(pollset, &pfd); ++ } ++ ++#if HAVE_LIBCAP ++ /* Drop as many privileges as we can. We'll still ++ * access files with uid=0, and we can setuid() to anything, but ++ * at least there's tons of other evilness (like loading kernel ++ * modules) we can't do directly. (The setuid() capability will ++ * go away automatically when we setuid() or exec() -- the former ++ * is likely to come first.) ++ */ ++ caps = cap_init(); ++ cap_clear(caps); ++ cap_set_flag(caps, CAP_PERMITTED, sizeof(suidcaps)/sizeof(cap_value_t), suidcaps, CAP_SET); ++ cap_set_flag(caps, CAP_EFFECTIVE, sizeof(suidcaps)/sizeof(cap_value_t), suidcaps, CAP_SET); ++ cap_set_proc(caps); ++ cap_free(caps); ++#endif ++ ++ mpm_state = AP_MPMQ_RUNNING; ++ ++ bucket_alloc = apr_bucket_alloc_create(pchild); ++ ++ /* die_now is set when AP_SIG_GRACEFUL is received in the child; ++ * shutdown_pending is set when SIGTERM is received when running ++ * in single process mode. */ ++ while (!die_now && !shutdown_pending) { ++ conn_rec *current_conn; ++ void *csd; ++ ++ /* ++ * (Re)initialize this child to a pre-connection state. ++ */ ++ ++ apr_pool_clear(ptrans); ++ ++ if ((ap_max_requests_per_child > 0 ++ && requests_this_child++ >= ap_max_requests_per_child)) { ++ clean_child_exit(0); ++ } ++ ++ (void) ap_update_child_status(sbh, SERVER_READY, (request_rec *) NULL); ++ ++ /* ++ * Wait for an acceptable connection to arrive. ++ */ ++ ++ /* Lock around "accept", if necessary */ ++ SAFE_ACCEPT(accept_mutex_on()); ++ ++ if (num_listensocks == 1) { ++ /* There is only one listener record, so refer to that one. */ ++ lr = ap_listeners; ++ } ++ else { ++ /* multiple listening sockets - need to poll */ ++ for (;;) { ++ apr_int32_t numdesc; ++ const apr_pollfd_t *pdesc; ++ ++ /* check for termination first so we don't sleep for a while in ++ * poll if already signalled ++ */ ++ if (one_process && shutdown_pending) { ++ SAFE_ACCEPT(accept_mutex_off()); ++ return; ++ } ++ else if (die_now) { ++ /* In graceful stop/restart; drop the mutex ++ * and terminate the child. */ ++ SAFE_ACCEPT(accept_mutex_off()); ++ clean_child_exit(0); ++ } ++ /* timeout == 10 seconds to avoid a hang at graceful restart/stop ++ * caused by the closing of sockets by the signal handler ++ */ ++ status = apr_pollset_poll(pollset, apr_time_from_sec(10), ++ &numdesc, &pdesc); ++ if (status != APR_SUCCESS) { ++ if (APR_STATUS_IS_TIMEUP(status) || ++ APR_STATUS_IS_EINTR(status)) { ++ continue; ++ } ++ /* Single Unix documents select as returning errnos ++ * EBADF, EINTR, and EINVAL... and in none of those ++ * cases does it make sense to continue. In fact ++ * on Linux 2.0.x we seem to end up with EFAULT ++ * occasionally, and we'd loop forever due to it. ++ */ ++ ap_log_error(APLOG_MARK, APLOG_ERR, status, ++ ap_server_conf, "apr_pollset_poll: (listen)"); ++ SAFE_ACCEPT(accept_mutex_off()); ++ clean_child_exit(1); ++ } ++ ++ /* We can always use pdesc[0], but sockets at position N ++ * could end up completely starved of attention in a very ++ * busy server. Therefore, we round-robin across the ++ * returned set of descriptors. While it is possible that ++ * the returned set of descriptors might flip around and ++ * continue to starve some sockets, we happen to know the ++ * internal pollset implementation retains ordering ++ * stability of the sockets. Thus, the round-robin should ++ * ensure that a socket will eventually be serviced. ++ */ ++ if (last_poll_idx >= numdesc) ++ last_poll_idx = 0; ++ ++ /* Grab a listener record from the client_data of the poll ++ * descriptor, and advance our saved index to round-robin ++ * the next fetch. ++ * ++ * ### hmm... this descriptor might have POLLERR rather ++ * ### than POLLIN ++ */ ++ lr = pdesc[last_poll_idx++].client_data; ++ goto got_fd; ++ } ++ } ++ got_fd: ++ /* if we accept() something we don't want to die, so we have to ++ * defer the exit ++ */ ++ status = lr->accept_func(&csd, lr, ptrans); ++ ++ SAFE_ACCEPT(accept_mutex_off()); /* unlock after "accept" */ ++ ++ if (status == APR_EGENERAL) { ++ /* resource shortage or should-not-occur occured */ ++ clean_child_exit(1); ++ } ++ else if (status != APR_SUCCESS) { ++ continue; ++ } ++ ++ /* ++ * We now have a connection, so set it up with the appropriate ++ * socket options, file descriptors, and read/write buffers. ++ */ ++ ++ { ++ pid_t pid = fork(), child_pid; ++ int status; ++ switch (pid) { ++ case -1: ++ ap_log_error(APLOG_MARK, APLOG_ERR, errno, NULL, "fork: Unable to fork new process"); ++ break; ++ case 0: /* child */ ++ apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname, pchild); ++ current_conn = ap_run_create_connection(ptrans, ap_server_conf, csd, my_child_num, sbh, bucket_alloc); ++ if (current_conn) { ++ ap_process_connection(current_conn, csd); ++ ap_lingering_close(current_conn); ++ } ++ exit(0); ++ default: /* parent; just wait for child to be done */ ++ do { ++ child_pid = waitpid(pid, &status, 0); ++ } while (child_pid == -1 && errno == EINTR); ++ ++ if (child_pid != pid || !WIFEXITED(status)) { ++ if (WIFSIGNALED(status)) { ++ ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf, "child died with signal %u", WTERMSIG(status)); ++ } else if (WEXITSTATUS(status) != 0) { ++ ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf, "child exited with non-zero exit status %u", WEXITSTATUS(status)); ++ } else { ++ ap_log_error(APLOG_MARK, APLOG_ERR, errno, NULL, "waitpid() failed"); ++ } ++ clean_child_exit(1); ++ } ++ break; ++ } ++ } ++ ++ /* Check the pod and the generation number after processing a ++ * connection so that we'll go away if a graceful restart occurred ++ * while we were processing the connection or we are the lucky ++ * idle server process that gets to die. ++ */ ++ if (ap_mpm_pod_check(pod) == APR_SUCCESS) { /* selected as idle? */ ++ die_now = 1; ++ } ++ else if (ap_my_generation != ++ ap_scoreboard_image->global->running_generation) { /* restart? */ ++ /* yeah, this could be non-graceful restart, in which case the ++ * parent will kill us soon enough, but why bother checking? ++ */ ++ die_now = 1; ++ } ++ ++ /* if we have already setuid(), die (we can't be used anyhow) */ ++ if (getuid()) ++ die_now = 1; ++ } ++ /* This apr_pool_clear call is redundant, should be redundant, but compensates ++ * a flaw in the apr reslist code. This should be removed once that flaw has ++ * been addressed. ++ */ ++ apr_pool_clear(ptrans); ++ clean_child_exit(0); ++} ++ ++ ++static int make_child(server_rec *s, int slot) ++{ ++ int pid; ++ ++ if (slot + 1 > ap_max_daemons_limit) { ++ ap_max_daemons_limit = slot + 1; ++ } ++ ++ if (one_process) { ++ apr_signal(SIGHUP, sig_term); ++ /* Don't catch AP_SIG_GRACEFUL in ONE_PROCESS mode :) */ ++ apr_signal(SIGINT, sig_term); ++#ifdef SIGQUIT ++ apr_signal(SIGQUIT, SIG_DFL); ++#endif ++ apr_signal(SIGTERM, sig_term); ++ child_main(slot); ++ return 0; ++ } ++ ++ (void) ap_update_child_status_from_indexes(slot, 0, SERVER_STARTING, ++ (request_rec *) NULL); ++ ++ ++#ifdef _OSD_POSIX ++ /* BS2000 requires a "special" version of fork() before a setuid() call */ ++ if ((pid = os_fork(unixd_config.user_name)) == -1) { ++#elif defined(TPF) ++ if ((pid = os_fork(s, slot)) == -1) { ++#else ++ if ((pid = fork()) == -1) { ++#endif ++ ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, "fork: Unable to fork new process"); ++ ++ /* fork didn't succeed. Fix the scoreboard or else ++ * it will say SERVER_STARTING forever and ever ++ */ ++ (void) ap_update_child_status_from_indexes(slot, 0, SERVER_DEAD, ++ (request_rec *) NULL); ++ ++ /* In case system resources are maxxed out, we don't want ++ * Apache running away with the CPU trying to fork over and ++ * over and over again. ++ */ ++ sleep(10); ++ ++ return -1; ++ } ++ ++ if (!pid) { ++#ifdef HAVE_BINDPROCESSOR ++ /* by default AIX binds to a single processor ++ * this bit unbinds children which will then bind to another cpu ++ */ ++ int status = bindprocessor(BINDPROCESS, (int)getpid(), ++ PROCESSOR_CLASS_ANY); ++ if (status != OK) { ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ++ ap_server_conf, "processor unbind failed %d", status); ++ } ++#endif ++ RAISE_SIGSTOP(MAKE_CHILD); ++ AP_MONCONTROL(1); ++ /* Disable the parent's signal handlers and set up proper handling in ++ * the child. ++ */ ++ apr_signal(SIGHUP, just_die); ++ apr_signal(SIGTERM, just_die); ++ /* The child process just closes listeners on AP_SIG_GRACEFUL. ++ * The pod is used for signalling the graceful restart. ++ */ ++ apr_signal(AP_SIG_GRACEFUL, stop_listening); ++ child_main(slot); ++ } ++ ++ ap_scoreboard_image->parent[slot].pid = pid; ++ ++ return 0; ++} ++ ++ ++/* start up a bunch of children */ ++static void startup_children(int number_to_start) ++{ ++ int i; ++ ++ for (i = 0; number_to_start && i < ap_daemons_limit; ++i) { ++ if (ap_scoreboard_image->servers[i][0].status != SERVER_DEAD) { ++ continue; ++ } ++ if (make_child(ap_server_conf, i) < 0) { ++ break; ++ } ++ --number_to_start; ++ } ++} ++ ++ ++/* ++ * idle_spawn_rate is the number of children that will be spawned on the ++ * next maintenance cycle if there aren't enough idle servers. It is ++ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by ++ * without the need to spawn. ++ */ ++static int idle_spawn_rate = 1; ++#ifndef MAX_SPAWN_RATE ++#define MAX_SPAWN_RATE (32) ++#endif ++static int hold_off_on_exponential_spawning; ++ ++static void perform_idle_server_maintenance(apr_pool_t *p) ++{ ++ int i; ++ int to_kill; ++ int idle_count; ++ worker_score *ws; ++ int free_length; ++ int free_slots[MAX_SPAWN_RATE]; ++ int last_non_dead; ++ int total_non_dead; ++ ++ /* initialize the free_list */ ++ free_length = 0; ++ ++ to_kill = -1; ++ idle_count = 0; ++ last_non_dead = -1; ++ total_non_dead = 0; ++ ++ for (i = 0; i < ap_daemons_limit; ++i) { ++ int status; ++ ++ if (i >= ap_max_daemons_limit && free_length == idle_spawn_rate) ++ break; ++ ws = &ap_scoreboard_image->servers[i][0]; ++ status = ws->status; ++ if (status == SERVER_DEAD) { ++ /* try to keep children numbers as low as possible */ ++ if (free_length < idle_spawn_rate) { ++ free_slots[free_length] = i; ++ ++free_length; ++ } ++ } ++ else { ++ /* We consider a starting server as idle because we started it ++ * at least a cycle ago, and if it still hasn't finished starting ++ * then we're just going to swamp things worse by forking more. ++ * So we hopefully won't need to fork more if we count it. ++ * This depends on the ordering of SERVER_READY and SERVER_STARTING. ++ */ ++ if (status <= SERVER_READY) { ++ ++ idle_count; ++ /* always kill the highest numbered child if we have to... ++ * no really well thought out reason ... other than observing ++ * the server behaviour under linux where lower numbered children ++ * tend to service more hits (and hence are more likely to have ++ * their data in cpu caches). ++ */ ++ to_kill = i; ++ } ++ ++ ++total_non_dead; ++ last_non_dead = i; ++ } ++ } ++ ap_max_daemons_limit = last_non_dead + 1; ++ if (idle_count > ap_daemons_max_free) { ++ /* kill off one child... we use the pod because that'll cause it to ++ * shut down gracefully, in case it happened to pick up a request ++ * while we were counting ++ */ ++ ap_mpm_pod_signal(pod); ++ idle_spawn_rate = 1; ++ } ++ else if (idle_count < ap_daemons_min_free) { ++ /* terminate the free list */ ++ if (free_length == 0) { ++ /* only report this condition once */ ++ static int reported = 0; ++ ++ if (!reported) { ++ ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf, ++ "server reached MaxClients setting, consider" ++ " raising the MaxClients setting"); ++ reported = 1; ++ } ++ idle_spawn_rate = 1; ++ } ++ else { ++ if (idle_spawn_rate >= 8) { ++ ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf, ++ "server seems busy, (you may need " ++ "to increase StartServers, or Min/MaxSpareServers), " ++ "spawning %d children, there are %d idle, and " ++ "%d total children", idle_spawn_rate, ++ idle_count, total_non_dead); ++ } ++ for (i = 0; i < free_length; ++i) { ++#ifdef TPF ++ if (make_child(ap_server_conf, free_slots[i]) == -1) { ++ if(free_length == 1) { ++ shutdown_pending = 1; ++ ap_log_error(APLOG_MARK, APLOG_EMERG, 0, ap_server_conf, ++ "No active child processes: shutting down"); ++ } ++ } ++#else ++ make_child(ap_server_conf, free_slots[i]); ++#endif /* TPF */ ++ } ++ /* the next time around we want to spawn twice as many if this ++ * wasn't good enough, but not if we've just done a graceful ++ */ ++ if (hold_off_on_exponential_spawning) { ++ --hold_off_on_exponential_spawning; ++ } ++ else if (idle_spawn_rate < MAX_SPAWN_RATE) { ++ idle_spawn_rate *= 2; ++ } ++ } ++ } ++ else { ++ idle_spawn_rate = 1; ++ } ++} ++ ++/***************************************************************** ++ * Executive routines. ++ */ ++ ++int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s) ++{ ++ int index; ++ int remaining_children_to_start; ++ apr_status_t rv; ++ ++ ap_log_pid(pconf, ap_pid_fname); ++ ++ first_server_limit = server_limit; ++ if (changed_limit_at_restart) { ++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, ++ "WARNING: Attempt to change ServerLimit " ++ "ignored during restart"); ++ changed_limit_at_restart = 0; ++ } ++ ++ /* Initialize cross-process accept lock */ ++ ap_lock_fname = apr_psprintf(_pconf, "%s.%" APR_PID_T_FMT, ++ ap_server_root_relative(_pconf, ap_lock_fname), ++ ap_my_pid); ++ ++ rv = apr_proc_mutex_create(&accept_mutex, ap_lock_fname, ++ ap_accept_lock_mech, _pconf); ++ if (rv != APR_SUCCESS) { ++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s, ++ "Couldn't create accept lock (%s) (%d)", ++ ap_lock_fname, ap_accept_lock_mech); ++ mpm_state = AP_MPMQ_STOPPING; ++ return 1; ++ } ++ ++#if APR_USE_SYSVSEM_SERIALIZE ++ if (ap_accept_lock_mech == APR_LOCK_DEFAULT || ++ ap_accept_lock_mech == APR_LOCK_SYSVSEM) { ++#else ++ if (ap_accept_lock_mech == APR_LOCK_SYSVSEM) { ++#endif ++ rv = unixd_set_proc_mutex_perms(accept_mutex); ++ if (rv != APR_SUCCESS) { ++ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s, ++ "Couldn't set permissions on cross-process lock; " ++ "check User and Group directives"); ++ mpm_state = AP_MPMQ_STOPPING; ++ return 1; ++ } ++ } ++ ++ if (!is_graceful) { ++ if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) { ++ mpm_state = AP_MPMQ_STOPPING; ++ return 1; ++ } ++ /* fix the generation number in the global score; we just got a new, ++ * cleared scoreboard ++ */ ++ ap_scoreboard_image->global->running_generation = ap_my_generation; ++ } ++ ++ set_signals(); ++ ++ if (one_process) { ++ AP_MONCONTROL(1); ++ make_child(ap_server_conf, 0); ++ } ++ else { ++ if (ap_daemons_max_free < ap_daemons_min_free + 1) /* Don't thrash... */ ++ ap_daemons_max_free = ap_daemons_min_free + 1; ++ ++ /* If we're doing a graceful_restart then we're going to see a lot ++ * of children exiting immediately when we get into the main loop ++ * below (because we just sent them AP_SIG_GRACEFUL). This happens pretty ++ * rapidly... and for each one that exits we'll start a new one until ++ * we reach at least daemons_min_free. But we may be permitted to ++ * start more than that, so we'll just keep track of how many we're ++ * supposed to start up without the 1 second penalty between each fork. ++ */ ++ remaining_children_to_start = ap_daemons_to_start; ++ if (remaining_children_to_start > ap_daemons_limit) { ++ remaining_children_to_start = ap_daemons_limit; ++ } ++ if (!is_graceful) { ++ startup_children(remaining_children_to_start); ++ remaining_children_to_start = 0; ++ } ++ else { ++ /* give the system some time to recover before kicking into ++ * exponential mode ++ */ ++ hold_off_on_exponential_spawning = 10; ++ } ++ ++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, ++ "%s configured -- resuming normal operations", ++ ap_get_server_description()); ++ ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf, ++ "Server built: %s", ap_get_server_built()); ++#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH ++ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, ++ "AcceptMutex: %s (default: %s)", ++ apr_proc_mutex_name(accept_mutex), ++ apr_proc_mutex_defname()); ++#endif ++ restart_pending = shutdown_pending = 0; ++ ++ mpm_state = AP_MPMQ_RUNNING; ++ ++ while (!restart_pending && !shutdown_pending) { ++ int child_slot; ++ apr_exit_why_e exitwhy; ++ int status, processed_status; ++ /* this is a memory leak, but I'll fix it later. */ ++ apr_proc_t pid; ++ ++ ap_wait_or_timeout(&exitwhy, &status, &pid, pconf); ++ ++ /* XXX: if it takes longer than 1 second for all our children ++ * to start up and get into IDLE state then we may spawn an ++ * extra child ++ */ ++ if (pid.pid != -1) { ++ processed_status = ap_process_child_status(&pid, exitwhy, status); ++ if (processed_status == APEXIT_CHILDFATAL) { ++ mpm_state = AP_MPMQ_STOPPING; ++ return 1; ++ } ++ ++ /* non-fatal death... note that it's gone in the scoreboard. */ ++ child_slot = find_child_by_pid(&pid); ++ if (child_slot >= 0) { ++ (void) ap_update_child_status_from_indexes(child_slot, 0, SERVER_DEAD, ++ (request_rec *) NULL); ++ if (processed_status == APEXIT_CHILDSICK) { ++ /* child detected a resource shortage (E[NM]FILE, ENOBUFS, etc) ++ * cut the fork rate to the minimum ++ */ ++ idle_spawn_rate = 1; ++ } ++ else if (remaining_children_to_start ++ && child_slot < ap_daemons_limit) { ++ /* we're still doing a 1-for-1 replacement of dead ++ * children with new children ++ */ ++ make_child(ap_server_conf, child_slot); ++ --remaining_children_to_start; ++ } ++#if APR_HAS_OTHER_CHILD ++ } ++ else if (apr_proc_other_child_alert(&pid, APR_OC_REASON_DEATH, status) == APR_SUCCESS) { ++ /* handled */ ++#endif ++ } ++ else if (is_graceful) { ++ /* Great, we've probably just lost a slot in the ++ * scoreboard. Somehow we don't know about this ++ * child. ++ */ ++ ap_log_error(APLOG_MARK, APLOG_WARNING, ++ 0, ap_server_conf, ++ "long lost child came home! (pid %ld)", (long)pid.pid); ++ } ++ /* Don't perform idle maintenance when a child dies, ++ * only do it when there's a timeout. Remember only a ++ * finite number of children can die, and it's pretty ++ * pathological for a lot to die suddenly. ++ */ ++ continue; ++ } ++ else if (remaining_children_to_start) { ++ /* we hit a 1 second timeout in which none of the previous ++ * generation of children needed to be reaped... so assume ++ * they're all done, and pick up the slack if any is left. ++ */ ++ startup_children(remaining_children_to_start); ++ remaining_children_to_start = 0; ++ /* In any event we really shouldn't do the code below because ++ * few of the servers we just started are in the IDLE state ++ * yet, so we'd mistakenly create an extra server. ++ */ ++ continue; ++ } ++ ++ perform_idle_server_maintenance(pconf); ++#ifdef TPF ++ shutdown_pending = os_check_server(tpf_server_name); ++ ap_check_signals(); ++ sleep(1); ++#endif /*TPF */ ++ } ++ } /* one_process */ ++ ++ mpm_state = AP_MPMQ_STOPPING; ++ ++ if (shutdown_pending && !is_graceful) { ++ /* Time to shut down: ++ * Kill child processes, tell them to call child_exit, etc... ++ */ ++ if (unixd_killpg(getpgrp(), SIGTERM) < 0) { ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGTERM"); ++ } ++ ap_reclaim_child_processes(1); /* Start with SIGTERM */ ++ ++ /* cleanup pid file on normal shutdown */ ++ { ++ const char *pidfile = NULL; ++ pidfile = ap_server_root_relative (pconf, ap_pid_fname); ++ if ( pidfile != NULL && unlink(pidfile) == 0) ++ ap_log_error(APLOG_MARK, APLOG_INFO, ++ 0, ap_server_conf, ++ "removed PID file %s (pid=%ld)", ++ pidfile, (long)getpid()); ++ } ++ ++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, ++ "caught SIGTERM, shutting down"); ++ ++ return 1; ++ } else if (shutdown_pending) { ++ /* Time to perform a graceful shut down: ++ * Reap the inactive children, and ask the active ones ++ * to close their listeners, then wait until they are ++ * all done to exit. ++ */ ++ int active_children; ++ apr_time_t cutoff = 0; ++ ++ /* Stop listening */ ++ ap_close_listeners(); ++ ++ /* kill off the idle ones */ ++ ap_mpm_pod_killpg(pod, ap_max_daemons_limit); ++ ++ /* Send SIGUSR1 to the active children */ ++ active_children = 0; ++ for (index = 0; index < ap_daemons_limit; ++index) { ++ if (ap_scoreboard_image->servers[index][0].status != SERVER_DEAD) { ++ /* Ask each child to close its listeners. */ ++ ap_mpm_safe_kill(MPM_CHILD_PID(index), AP_SIG_GRACEFUL); ++ active_children++; ++ } ++ } ++ ++ /* Allow each child which actually finished to exit */ ++ ap_relieve_child_processes(); ++ ++ /* cleanup pid file */ ++ { ++ const char *pidfile = NULL; ++ pidfile = ap_server_root_relative (pconf, ap_pid_fname); ++ if ( pidfile != NULL && unlink(pidfile) == 0) ++ ap_log_error(APLOG_MARK, APLOG_INFO, ++ 0, ap_server_conf, ++ "removed PID file %s (pid=%ld)", ++ pidfile, (long)getpid()); ++ } ++ ++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, ++ "caught " AP_SIG_GRACEFUL_STOP_STRING ", shutting down gracefully"); ++ ++ if (ap_graceful_shutdown_timeout) { ++ cutoff = apr_time_now() + ++ apr_time_from_sec(ap_graceful_shutdown_timeout); ++ } ++ ++ /* Don't really exit until each child has finished */ ++ shutdown_pending = 0; ++ do { ++ /* Pause for a second */ ++ sleep(1); ++ ++ /* Relieve any children which have now exited */ ++ ap_relieve_child_processes(); ++ ++ active_children = 0; ++ for (index = 0; index < ap_daemons_limit; ++index) { ++ if (ap_mpm_safe_kill(MPM_CHILD_PID(index), 0) == APR_SUCCESS) { ++ active_children = 1; ++ /* Having just one child is enough to stay around */ ++ break; ++ } ++ } ++ } while (!shutdown_pending && active_children && ++ (!ap_graceful_shutdown_timeout || apr_time_now() < cutoff)); ++ ++ /* We might be here because we received SIGTERM, either ++ * way, try and make sure that all of our processes are ++ * really dead. ++ */ ++ unixd_killpg(getpgrp(), SIGTERM); ++ ++ return 1; ++ } ++ ++ /* we've been told to restart */ ++ apr_signal(SIGHUP, SIG_IGN); ++ apr_signal(AP_SIG_GRACEFUL, SIG_IGN); ++ if (one_process) { ++ /* not worth thinking about */ ++ return 1; ++ } ++ ++ /* advance to the next generation */ ++ /* XXX: we really need to make sure this new generation number isn't in ++ * use by any of the children. ++ */ ++ ++ap_my_generation; ++ ap_scoreboard_image->global->running_generation = ap_my_generation; ++ ++ if (is_graceful) { ++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, ++ "Graceful restart requested, doing restart"); ++ ++ /* kill off the idle ones */ ++ ap_mpm_pod_killpg(pod, ap_max_daemons_limit); ++ ++ /* This is mostly for debugging... so that we know what is still ++ * gracefully dealing with existing request. This will break ++ * in a very nasty way if we ever have the scoreboard totally ++ * file-based (no shared memory) ++ */ ++ for (index = 0; index < ap_daemons_limit; ++index) { ++ if (ap_scoreboard_image->servers[index][0].status != SERVER_DEAD) { ++ ap_scoreboard_image->servers[index][0].status = SERVER_GRACEFUL; ++ /* Ask each child to close its listeners. ++ * ++ * NOTE: we use the scoreboard, because if we send SIGUSR1 ++ * to every process in the group, this may include CGI's, ++ * piped loggers, etc. They almost certainly won't handle ++ * it gracefully. ++ */ ++ ap_mpm_safe_kill(ap_scoreboard_image->parent[index].pid, AP_SIG_GRACEFUL); ++ } ++ } ++ } ++ else { ++ /* Kill 'em off */ ++ if (unixd_killpg(getpgrp(), SIGHUP) < 0) { ++ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGHUP"); ++ } ++ ap_reclaim_child_processes(0); /* Not when just starting up */ ++ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, ++ "SIGHUP received. Attempting to restart"); ++ } ++ ++ return 0; ++} ++ ++/* This really should be a post_config hook, but the error log is already ++ * redirected by that point, so we need to do this in the open_logs phase. ++ */ ++static int itk_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) ++{ ++ apr_status_t rv; ++ ++ pconf = p; ++ ap_server_conf = s; ++ ++ if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) { ++ ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, ++ NULL, "no listening sockets available, shutting down"); ++ return DONE; ++ } ++ ++ if ((rv = ap_mpm_pod_open(pconf, &pod))) { ++ ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL, ++ "Could not open pipe-of-death."); ++ return DONE; ++ } ++ return OK; ++} ++ ++static int itk_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp) ++{ ++ static int restart_num = 0; ++ int no_detach, debug, foreground; ++ apr_status_t rv; ++ ++ mpm_state = AP_MPMQ_STARTING; ++ ++ debug = ap_exists_config_define("DEBUG"); ++ ++ if (debug) { ++ foreground = one_process = 1; ++ no_detach = 0; ++ } ++ else ++ { ++ no_detach = ap_exists_config_define("NO_DETACH"); ++ one_process = ap_exists_config_define("ONE_PROCESS"); ++ foreground = ap_exists_config_define("FOREGROUND"); ++ } ++ ++ /* sigh, want this only the second time around */ ++ if (restart_num++ == 1) { ++ is_graceful = 0; ++ ++ if (!one_process && !foreground) { ++ rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND ++ : APR_PROC_DETACH_DAEMONIZE); ++ if (rv != APR_SUCCESS) { ++ ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, ++ "apr_proc_detach failed"); ++ return HTTP_INTERNAL_SERVER_ERROR; ++ } ++ } ++ ++ parent_pid = ap_my_pid = getpid(); ++ } ++ ++ unixd_pre_config(ptemp); ++ ap_listen_pre_config(); ++ ap_daemons_to_start = DEFAULT_START_DAEMON; ++ ap_daemons_min_free = DEFAULT_MIN_FREE_DAEMON; ++ ap_daemons_max_free = DEFAULT_MAX_FREE_DAEMON; ++ ap_daemons_limit = server_limit; ++ ap_pid_fname = DEFAULT_PIDLOG; ++ ap_lock_fname = DEFAULT_LOCKFILE; ++ ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD; ++ ap_extended_status = 0; ++#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE ++ ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED; ++#endif ++ ++ apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir)); ++ ++ return OK; ++} ++ ++static int itk_post_perdir_config(request_rec *r) ++{ ++ uid_t wanted_uid; ++ gid_t wanted_gid; ++ const char *wanted_username; ++ int err = 0; ++ ++ itk_server_conf *sconf = ++ (itk_server_conf *) ap_get_module_config(r->server->module_config, &mpm_itk_module); ++ ++ /* Enforce MaxClientsVhost. */ ++ if (sconf->max_clients_vhost > 0) { ++ int i, num_other_servers = 0; ++ for (i = 0; i < ap_daemons_limit; ++i) { ++ worker_score *ws = &ap_scoreboard_image->servers[i][0]; ++ if (ws->status >= SERVER_BUSY_READ && strncmp(ws->vhost, r->server->server_hostname, 31) == 0) ++ ++num_other_servers; ++ } ++ ++ if (num_other_servers > sconf->max_clients_vhost) { ++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, \ ++ "MaxClientsVhost reached for %s, refusing client.", ++ r->server->server_hostname); ++ return HTTP_SERVICE_UNAVAILABLE; ++ } ++ } ++ ++ itk_per_dir_conf *dconf = ++ (itk_per_dir_conf *) ap_get_module_config(r->per_dir_config, &mpm_itk_module); ++ ++ strncpy(ap_scoreboard_image->servers[my_child_num][0].vhost, r->server->server_hostname, 31); ++ ap_scoreboard_image->servers[my_child_num][0].vhost[31] = 0; ++ ++ if (dconf->nice_value != UNSET_NICE_VALUE && ++ setpriority(PRIO_PROCESS, 0, dconf->nice_value)) { ++ _DBG("setpriority(): %s", strerror(errno)); ++ err = 1; ++ } ++ ++ wanted_uid = dconf->uid; ++ wanted_gid = dconf->gid; ++ wanted_username = dconf->username; ++ ++ if (wanted_uid == -1 || wanted_gid == -1) { ++ wanted_uid = unixd_config.user_id; ++ wanted_gid = unixd_config.group_id; ++ wanted_username = unixd_config.user_name; ++ } ++ ++ if (!err && wanted_uid != -1 && wanted_gid != -1 && (getuid() != wanted_uid || getgid() != wanted_gid)) { ++ if (setgid(wanted_gid)) { ++ _DBG("setgid(%d): %s", wanted_gid, strerror(errno)); ++ err = 1; ++ } else if (initgroups(wanted_username, wanted_gid)) { ++ _DBG("initgroups(%s, %d): %s", wanted_username, wanted_gid, strerror(errno)); ++ err = 1; ++ } else if (setuid(wanted_uid)) { ++ _DBG("setuid(%d): %s", wanted_uid, strerror(errno)); ++ err = 1; ++ } ++ } ++ ++ /* ++ * Most likely a case of switching uid/gid within a persistent ++ * connection; the RFCs allow us to just close the connection ++ * at anytime, so we excercise our right. :-) ++ */ ++ if (err) { ++ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, \ ++ "Couldn't set uid/gid/priority, closing connection."); ++ ap_lingering_close(r->connection); ++ exit(0); ++ } ++ return OK; ++} ++ ++static void itk_hooks(apr_pool_t *p) ++{ ++ /* The itk open_logs phase must run before the core's, or stderr ++ * will be redirected to a file, and the messages won't print to the ++ * console. ++ */ ++ static const char *const aszSucc[] = {"core.c", NULL}; ++ ++#ifdef AUX3 ++ (void) set42sig(); ++#endif ++ ++ ap_hook_open_logs(itk_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE); ++ /* we need to set the MPM state before other pre-config hooks use MPM query ++ * to retrieve it, so register as REALLY_FIRST ++ */ ++ ap_hook_pre_config(itk_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST); ++ ++ /* set the uid as fast as possible, but not before merging per-dit config */ ++ ap_hook_header_parser(itk_post_perdir_config, NULL, NULL, APR_HOOK_REALLY_FIRST); ++} ++ ++static const char *set_daemons_to_start(cmd_parms *cmd, void *dummy, const char *arg) ++{ ++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); ++ if (err != NULL) { ++ return err; ++ } ++ ++ ap_daemons_to_start = atoi(arg); ++ return NULL; ++} ++ ++static const char *set_min_free_servers(cmd_parms *cmd, void *dummy, const char *arg) ++{ ++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); ++ if (err != NULL) { ++ return err; ++ } ++ ++ ap_daemons_min_free = atoi(arg); ++ if (ap_daemons_min_free <= 0) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: detected MinSpareServers set to non-positive."); ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "Resetting to 1 to avoid almost certain Apache failure."); ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "Please read the documentation."); ++ ap_daemons_min_free = 1; ++ } ++ ++ return NULL; ++} ++ ++static const char *set_max_free_servers(cmd_parms *cmd, void *dummy, const char *arg) ++{ ++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); ++ if (err != NULL) { ++ return err; ++ } ++ ++ ap_daemons_max_free = atoi(arg); ++ return NULL; ++} ++ ++static const char *set_max_clients (cmd_parms *cmd, void *dummy, const char *arg) ++{ ++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); ++ if (err != NULL) { ++ return err; ++ } ++ ++ ap_daemons_limit = atoi(arg); ++ if (ap_daemons_limit > server_limit) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: MaxClients of %d exceeds ServerLimit value " ++ "of %d servers,", ap_daemons_limit, server_limit); ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ " lowering MaxClients to %d. To increase, please " ++ "see the ServerLimit", server_limit); ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ " directive."); ++ ap_daemons_limit = server_limit; ++ } ++ else if (ap_daemons_limit < 1) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: Require MaxClients > 0, setting to 1"); ++ ap_daemons_limit = 1; ++ } ++ return NULL; ++} ++ ++static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg) ++{ ++ int tmp_server_limit; ++ ++ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); ++ if (err != NULL) { ++ return err; ++ } ++ ++ tmp_server_limit = atoi(arg); ++ /* you cannot change ServerLimit across a restart; ignore ++ * any such attempts ++ */ ++ if (first_server_limit && ++ tmp_server_limit != server_limit) { ++ /* how do we log a message? the error log is a bit bucket at this ++ * point; we'll just have to set a flag so that ap_mpm_run() ++ * logs a warning later ++ */ ++ changed_limit_at_restart = 1; ++ return NULL; ++ } ++ server_limit = tmp_server_limit; ++ ++ if (server_limit > MAX_SERVER_LIMIT) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: ServerLimit of %d exceeds compile time limit " ++ "of %d servers,", server_limit, MAX_SERVER_LIMIT); ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ " lowering ServerLimit to %d.", MAX_SERVER_LIMIT); ++ server_limit = MAX_SERVER_LIMIT; ++ } ++ else if (server_limit < 1) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: Require ServerLimit > 0, setting to 1"); ++ server_limit = 1; ++ } ++ return NULL; ++} ++ ++static const char *assign_user_id (cmd_parms *cmd, void *ptr, const char *user_name, const char *group_name) ++{ ++ itk_per_dir_conf *dconf = (itk_per_dir_conf *) ptr; ++ dconf->username = apr_pstrdup(cmd->pool, user_name); ++ dconf->uid = ap_uname2id(user_name); ++ dconf->gid = ap_gname2id(group_name); ++ return NULL; ++} ++ ++static const char *set_max_clients_vhost (cmd_parms *cmd, void *dummy, const char *arg) ++{ ++ itk_server_conf *sconf = ++ (itk_server_conf *) ap_get_module_config(cmd->server->module_config, &mpm_itk_module); ++ sconf->max_clients_vhost = atoi(arg); ++ return NULL; ++} ++ ++static const char *set_nice_value (cmd_parms *cmd, void *ptr, const char *arg) ++{ ++ itk_per_dir_conf *dconf = (itk_per_dir_conf *) ptr; ++ int nice_value = atoi(arg); ++ ++ if (nice_value < -20) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: NiceValue of %d is below -20, increasing NiceValue to -20.", ++ nice_value); ++ nice_value = -20; ++ } ++ else if (nice_value > 19) { ++ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, ++ "WARNING: NiceValue of %d is above 19, lowering NiceValue to 19.", ++ nice_value); ++ nice_value = 19; ++ } ++ dconf->nice_value = nice_value; ++ return NULL; ++} ++ ++static const command_rec itk_cmds[] = { ++UNIX_DAEMON_COMMANDS, ++LISTEN_COMMANDS, ++AP_INIT_TAKE1("StartServers", set_daemons_to_start, NULL, RSRC_CONF, ++ "Number of child processes launched at server startup"), ++AP_INIT_TAKE1("MinSpareServers", set_min_free_servers, NULL, RSRC_CONF, ++ "Minimum number of idle children, to handle request spikes"), ++AP_INIT_TAKE1("MaxSpareServers", set_max_free_servers, NULL, RSRC_CONF, ++ "Maximum number of idle children"), ++AP_INIT_TAKE1("MaxClients", set_max_clients, NULL, RSRC_CONF, ++ "Maximum number of children alive at the same time"), ++AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF, ++ "Maximum value of MaxClients for this run of Apache"), ++AP_INIT_TAKE2("AssignUserID", assign_user_id, NULL, RSRC_CONF|ACCESS_CONF, ++ "Tie a virtual host to a specific child process."), ++AP_INIT_TAKE1("MaxClientsVHost", set_max_clients_vhost, NULL, RSRC_CONF, ++ "Maximum number of children alive at the same time for this virtual host."), ++AP_INIT_TAKE1("NiceValue", set_nice_value, NULL, RSRC_CONF|ACCESS_CONF, ++ "Set nice value for the given vhost, from -20 (highest priority) to 19 (lowest priority)."), ++AP_GRACEFUL_SHUTDOWN_TIMEOUT_COMMAND, ++{ NULL } ++}; ++ ++/* == allocate a private per-dir config structure == */ ++static void *itk_create_dir_config(apr_pool_t *p, char *dummy) ++{ ++ itk_per_dir_conf *c = (itk_per_dir_conf *) ++ apr_pcalloc(p, sizeof(itk_per_dir_conf)); ++ c->uid = c->gid = -1; ++ c->nice_value = UNSET_NICE_VALUE; ++ return c; ++} ++ ++/* == merge the parent per-dir config structure into ours == */ ++static void *itk_merge_dir_config(apr_pool_t *p, void *parent_ptr, void *child_ptr) ++{ ++ itk_per_dir_conf *c = (itk_per_dir_conf *) ++ itk_create_dir_config(p, NULL); ++ itk_per_dir_conf *parent = (itk_per_dir_conf *) parent_ptr; ++ itk_per_dir_conf *child = (itk_per_dir_conf *) child_ptr; ++ ++ if (child->username != NULL) { ++ c->username = child->username; ++ c->uid = child->uid; ++ c->gid = child->gid; ++ } else { ++ c->username = parent->username; ++ c->uid = parent->uid; ++ c->gid = parent->gid; ++ } ++ if (child->nice_value != UNSET_NICE_VALUE) { ++ c->nice_value = child->nice_value; ++ } else { ++ c->nice_value = parent->nice_value; ++ } ++ return c; ++} ++ ++/* == allocate a private server config structure == */ ++static void *itk_create_server_config(apr_pool_t *p, server_rec *s) ++{ ++ itk_server_conf *c = (itk_server_conf *) ++ apr_pcalloc(p, sizeof(itk_server_conf)); ++ c->max_clients_vhost = -1; ++ return c; ++} ++ ++module AP_MODULE_DECLARE_DATA mpm_itk_module = { ++ MPM20_MODULE_STUFF, ++ ap_mpm_rewrite_args, /* hook to run before apache parses args */ ++ itk_create_dir_config, /* create per-directory config structure */ ++ itk_merge_dir_config, /* merge per-directory config structures */ ++ itk_create_server_config, /* create per-server config structure */ ++ NULL, /* merge per-server config structures */ ++ itk_cmds, /* command apr_table_t */ ++ itk_hooks, /* register hooks */ ++}; +unchanged: +--- server/mpm/experimental/itk/mpm.h ++++ server/mpm/experimental/itk/mpm.h +@@ -0,0 +1,68 @@ ++/* Licensed to the Apache Software Foundation (ASF) under one or more ++ * contributor license agreements. See the NOTICE file distributed with ++ * this work for additional information regarding copyright ownership. ++ * The ASF licenses this file to You under the Apache License, Version 2.0 ++ * (the "License"); you may not use this file except in compliance with ++ * the License. You may obtain a copy of the License at ++ * ++ * http://www.apache.org/licenses/LICENSE-2.0 ++ * ++ * Unless required by applicable law or agreed to in writing, software ++ * distributed under the License is distributed on an "AS IS" BASIS, ++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ++ * See the License for the specific language governing permissions and ++ * limitations under the License. ++ * ++ * Portions copyright 2005-2009 Steinar H. Gunderson <sgunderson@bigfoot.com>. ++ * Licensed under the same terms as the rest of Apache. ++ * ++ * Portions copyright 2008 Knut Auvor Grythe <knut@auvor.no>. ++ * Licensed under the same terms as the rest of Apache. ++ */ ++ ++/** ++ * @file itk/mpm.h ++ * @brief ITK MPM (setuid per-vhost, no threads) ++ * ++ * @defgroup APACHE_MPM_ITK Apache ITK ++ * @ingroup APACHE_MPM APACHE_OS_UNIX ++ * @{ ++ */ ++ ++#include "httpd.h" ++#include "mpm_default.h" ++#include "scoreboard.h" ++#include "unixd.h" ++ ++#ifndef APACHE_MPM_ITK_H ++#define APACHE_MPM_ITK_H ++ ++#define ITK_MPM ++ ++#define MPM_NAME "ITK" ++ ++#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES ++#define AP_MPM_WANT_WAIT_OR_TIMEOUT ++#define AP_MPM_WANT_PROCESS_CHILD_STATUS ++#define AP_MPM_WANT_SET_PIDFILE ++#define AP_MPM_WANT_SET_SCOREBOARD ++#define AP_MPM_WANT_SET_LOCKFILE ++#define AP_MPM_WANT_SET_MAX_REQUESTS ++#define AP_MPM_WANT_SET_COREDUMPDIR ++#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH ++#define AP_MPM_WANT_SIGNAL_SERVER ++#define AP_MPM_WANT_SET_MAX_MEM_FREE ++#define AP_MPM_WANT_FATAL_SIGNAL_HANDLER ++#define AP_MPM_WANT_SET_GRACEFUL_SHUTDOWN ++#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK ++ ++#define AP_MPM_USES_POD 1 ++#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid) ++#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0) ++#define MPM_ACCEPT_FUNC unixd_accept ++ ++extern int ap_threads_per_child; ++extern int ap_max_daemons_limit; ++extern server_rec *ap_server_conf; ++#endif /* APACHE_MPM_ITK_H */ ++/** @} */ +unchanged: +--- server/mpm/experimental/itk/mpm_default.h ++++ server/mpm/experimental/itk/mpm_default.h +@@ -0,0 +1,80 @@ ++/* Licensed to the Apache Software Foundation (ASF) under one or more ++ * contributor license agreements. See the NOTICE file distributed with ++ * this work for additional information regarding copyright ownership. ++ * The ASF licenses this file to You under the Apache License, Version 2.0 ++ * (the "License"); you may not use this file except in compliance with ++ * the License. You may obtain a copy of the License at ++ * ++ * http://www.apache.org/licenses/LICENSE-2.0 ++ * ++ * Unless required by applicable law or agreed to in writing, software ++ * distributed under the License is distributed on an "AS IS" BASIS, ++ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ++ * See the License for the specific language governing permissions and ++ * limitations under the License. ++ * ++ * Portions copyright 2005-2009 Steinar H. Gunderson <sgunderson@bigfoot.com>. ++ * Licensed under the same terms as the rest of Apache. ++ * ++ * Portions copyright 2008 Knut Auvor Grythe <knut@auvor.no>. ++ * Licensed under the same terms as the rest of Apache. ++ */ ++ ++/** ++ * @file itk/mpm_default.h ++ * @brief ITK MPM defaults ++ * ++ * @addtogroup APACHE_MPM_ITK ++ * @{ ++ */ ++ ++#ifndef APACHE_MPM_DEFAULT_H ++#define APACHE_MPM_DEFAULT_H ++ ++/* Number of servers to spawn off by default --- also, if fewer than ++ * this free when the caretaker checks, it will spawn more. ++ */ ++#ifndef DEFAULT_START_DAEMON ++#define DEFAULT_START_DAEMON 5 ++#endif ++ ++/* Maximum number of *free* server processes --- more than this, and ++ * they will die off. ++ */ ++ ++#ifndef DEFAULT_MAX_FREE_DAEMON ++#define DEFAULT_MAX_FREE_DAEMON 10 ++#endif ++ ++/* Minimum --- fewer than this, and more will be created */ ++ ++#ifndef DEFAULT_MIN_FREE_DAEMON ++#define DEFAULT_MIN_FREE_DAEMON 5 ++#endif ++ ++/* File used for accept locking, when we use a file */ ++#ifndef DEFAULT_LOCKFILE ++#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock" ++#endif ++ ++/* Where the main/parent process's pid is logged */ ++#ifndef DEFAULT_PIDLOG ++#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid" ++#endif ++ ++/* ++ * Interval, in microseconds, between scoreboard maintenance. ++ */ ++#ifndef SCOREBOARD_MAINTENANCE_INTERVAL ++#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000 ++#endif ++ ++/* Number of requests to try to handle in a single process. If <= 0, ++ * the children don't die off. ++ */ ++#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD ++#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000 ++#endif ++ ++#endif /* AP_MPM_DEFAULT_H */ ++/** @} */ +unchanged: +--- server/mpm/config.m4 ++++ server/mpm/config.m4 +@@ -1,7 +1,7 @@ + AC_MSG_CHECKING(which MPM to use) + AC_ARG_WITH(mpm, + APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use. +- MPM={beos|event|worker|prefork|mpmt_os2}),[ ++ MPM={beos|event|worker|prefork|mpmt_os2|itk}),[ + APACHE_MPM=$withval + ],[ + if test "x$APACHE_MPM" = "x"; then +@@ -23,7 +23,7 @@ + + ap_mpm_is_experimental () + { +- if test "$apache_cv_mpm" = "event" ; then ++ if test "$apache_cv_mpm" = "event" -o "$apache_cv_mpm" = "itk" ; then + return 0 + else + return 1 +@@ -66,6 +66,11 @@ + else + MPM_SUBDIR_NAME=$MPM_NAME + fi ++ ++if test "$apache_cv_mpm" = "itk" ; then ++ AC_CHECK_LIB(cap, cap_init) ++fi ++ + MPM_DIR=server/mpm/$MPM_SUBDIR_NAME + MPM_LIB=$MPM_DIR/lib${MPM_NAME}.la + +unchanged: +--- include/http_request.h ++++ include/http_request.h +@@ -12,6 +12,12 @@ + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. ++ * ++ * Portions copyright 2005-2009 Steinar H. Gunderson <sgunderson@bigfoot.com>. ++ * Licensed under the same terms as the rest of Apache. ++ * ++ * Portions copyright 2008 Knut Auvor Grythe <knut@auvor.no>. ++ * Licensed under the same terms as the rest of Apache. + */ + + /** +@@ -350,6 +356,15 @@ + */ + AP_DECLARE_HOOK(void,insert_filter,(request_rec *r)) + ++/** ++ * This hook allows modules to affect the request immediately after the ++ * per-directory configuration for the request has been generated. This allows ++ * modules to make decisions based upon the current directory configuration ++ * @param r The current request ++ * @return OK or DECLINED ++ */ ++AP_DECLARE_HOOK(int,post_perdir_config,(request_rec *r)) ++ + AP_DECLARE(int) ap_location_walk(request_rec *r); + AP_DECLARE(int) ap_directory_walk(request_rec *r); + AP_DECLARE(int) ap_file_walk(request_rec *r); +unchanged: +--- server/request.c ++++ server/request.c +@@ -12,6 +12,12 @@ + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. ++ * ++ * Portions copyright 2005-2009 Steinar H. Gunderson <sgunderson@bigfoot.com>. ++ * Licensed under the same terms as the rest of Apache. ++ * ++ * Portions copyright 2008 Knut Auvor Grythe <knut@auvor.no>. ++ * Licensed under the same terms as the rest of Apache. + */ + + /* +@@ -61,6 +67,7 @@ + APR_HOOK_LINK(auth_checker) + APR_HOOK_LINK(insert_filter) + APR_HOOK_LINK(create_request) ++ APR_HOOK_LINK(post_perdir_config) + ) + + AP_IMPLEMENT_HOOK_RUN_FIRST(int,translate_name, +@@ -80,6 +87,8 @@ + AP_IMPLEMENT_HOOK_VOID(insert_filter, (request_rec *r), (r)) + AP_IMPLEMENT_HOOK_RUN_ALL(int, create_request, + (request_rec *r), (r), OK, DECLINED) ++AP_IMPLEMENT_HOOK_RUN_ALL(int,post_perdir_config, ++ (request_rec *r), (r), OK, DECLINED) + + + static int decl_die(int status, char *phase, request_rec *r) +@@ -158,6 +167,13 @@ + return access_status; + } + ++ /* First chance to handle the request after per-directory configuration is ++ * generated ++ */ ++ if ((access_status = ap_run_post_perdir_config(r))) { ++ return access_status; ++ } ++ + /* Only on the main request! */ + if (r->main == NULL) { + if ((access_status = ap_run_header_parser(r))) { +only in patch2: +unchanged: +--- server/config.c ++++ server/config.c +@@ -1840,6 +1840,34 @@ AP_CORE_DECLARE(int) ap_parse_htaccess(a + else { + if (!APR_STATUS_IS_ENOENT(status) + && !APR_STATUS_IS_ENOTDIR(status)) { ++#ifdef ITK_MPM ++ /* ++ * If we are in a persistent connection, we might end up in a state ++ * where we can no longer read .htaccess files because we have already ++ * setuid(). This can either be because the previous request was for ++ * another vhost (basically the same problem as when setuid() fails in ++ * itk.c), or it can be because a .htaccess file is readable only by ++ * root. ++ * ++ * In any case, we don't want to give out a 403, since the request has ++ * a very real chance of succeeding on a fresh connection (where ++ * presumably uid=0). Thus, we give up serving the request on this ++ * TCP connection, and do a hard close of the socket. As long as we're ++ * in a persistent connection (and there _should_ not be a way this ++ * would happen on the first request in a connection, save for subrequests, ++ * which we special-case), this is allowed, as it is what happens on ++ * a timeout. The browser will simply open a new connection and try ++ * again (there's of course a performance hit, though, both due to ++ * the new connection setup and the fork() of a new server child). ++ */ ++ if (r->main == NULL && getuid() != 0) { ++ ap_log_rerror(APLOG_MARK, APLOG_WARNING, status, r, ++ "Couldn't read %s, closing connection.", ++ filename); ++ ap_lingering_close(r->connection); ++ exit(0); ++ } ++#endif + ap_log_rerror(APLOG_MARK, APLOG_CRIT, status, r, + "%s pcfg_openfile: unable to check htaccess file, " + "ensure it is readable", |