diff options
Diffstat (limited to 'www/apache20/files/mpm-itk-20061030-01')
| -rw-r--r-- | www/apache20/files/mpm-itk-20061030-01 | 1673 |
1 files changed, 0 insertions, 1673 deletions
diff --git a/www/apache20/files/mpm-itk-20061030-01 b/www/apache20/files/mpm-itk-20061030-01 deleted file mode 100644 index 09c645e65640..000000000000 --- a/www/apache20/files/mpm-itk-20061030-01 +++ /dev/null @@ -1,1673 +0,0 @@ -diff -Nur server/mpm/config.m4 server/mpm/config.m4 ---- server/mpm/config.m4 2004-11-24 20:31:09.000000000 +0100 -+++ server/mpm/config.m4 2006-10-30 11:58:33.000000000 +0100 -@@ -1,7 +1,7 @@ - AC_MSG_CHECKING(which MPM to use) - AC_ARG_WITH(mpm, - APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use. -- MPM={beos|worker|prefork|mpmt_os2|perchild|leader|threadpool}),[ -+ MPM={beos|worker|prefork|mpmt_os2|perchild|leader|threadpool|itk}),[ - APACHE_MPM=$withval - ],[ - if test "x$APACHE_MPM" = "x"; then -@@ -12,7 +12,7 @@ - - apache_cv_mpm=$APACHE_MPM - --if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "perchild" -o "$apache_cv_mpm" = "leader" -o "$apache_cv_mpm" = "threadpool" ; then -+if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "perchild" -o "$apache_cv_mpm" = "leader" -o "$apache_cv_mpm" = "threadpool" -o "$apache_cv_mpm" = "itk"; then - APR_CHECK_APR_DEFINE(APR_HAS_THREADS) - - if test "x$ac_cv_define_APR_HAS_THREADS" = "xno"; then -@@ -26,7 +26,7 @@ - APACHE_FAST_OUTPUT(server/mpm/Makefile) - - MPM_NAME=$apache_cv_mpm --if test "$MPM_NAME" = "leader" -o "$MPM_NAME" = "threadpool" -o "$MPM_NAME" = "perchild"; then -+if test "$MPM_NAME" = "leader" -o "$MPM_NAME" = "threadpool" -o "$MPM_NAME" = "perchild" -o "$MPM_NAME" = "itk"; then - AC_MSG_WARN(You have selected an EXPERIMENTAL MPM. Be warned!) - MPM_SUBDIR_NAME=experimental/$MPM_NAME - else -diff -Nur server/mpm/experimental/itk/Makefile.in server/mpm/experimental/itk/Makefile.in ---- server/mpm/experimental/itk/Makefile.in 1970-01-01 01:00:00.000000000 +0100 -+++ server/mpm/experimental/itk/Makefile.in 2006-10-29 22:39:54.000000000 +0100 -@@ -0,0 +1,5 @@ -+ -+LTLIBRARY_NAME = libitk.la -+LTLIBRARY_SOURCES = itk.c -+ -+include $(top_srcdir)/build/ltlib.mk -diff -Nur server/mpm/experimental/itk/config5.m4 server/mpm/experimental/itk/config5.m4 ---- server/mpm/experimental/itk/config5.m4 1970-01-01 01:00:00.000000000 +0100 -+++ server/mpm/experimental/itk/config5.m4 2006-10-29 22:39:54.000000000 +0100 -@@ -0,0 +1,4 @@ -+ if test "$MPM_NAME" = "itk" ; then -+ AC_CHECK_FUNCS(pthread_kill) -+ APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile) -+ fi -diff -Nur server/mpm/experimental/itk/itk.c server/mpm/experimental/itk/itk.c ---- server/mpm/experimental/itk/itk.c 1970-01-01 01:00:00.000000000 +0100 -+++ server/mpm/experimental/itk/itk.c 2006-10-30 18:51:03.000000000 +0100 -@@ -0,0 +1,1500 @@ -+/* Copyright 1999-2004 The Apache Software Foundation -+ * -+ * Licensed 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. -+ */ -+ -+#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) %s(): " text, \ -+ getpid(), getuid(), __FUNCTION__, ##par, 0) -+ -+#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 "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 -+ -+#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 20000 -+#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; -+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 int die_now = 0; -+ -+typedef struct -+{ -+ uid_t uid; -+ gid_t gid; -+ char *username; -+ 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[512]; -+ int len = strlen(sconf->gprof_dir) - 1; -+ if(*(dir + len) == '%') { -+ dir[len] = '\0'; -+ apr_snprintf(buf, sizeof(buf), "%sgprof.%d", dir, (int)getpid()); -+ } -+ use_dir = ap_server_root_relative(pconf, buf[0] ? buf : dir); -+ res = apr_dir_make(use_dir, 0755, pconf); -+ if(res != APR_SUCCESS && !APR_STATUS_IS_EEXIST(res)) { -+ ap_log_error(APLOG_MARK, APLOG_ERR, errno, 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, msg); -+ clean_child_exit(0); -+ } -+ else { -+ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, 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, 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, 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); -+} -+ -+/* 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; -+} -+ -+/* 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 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 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; -+static ap_listen_rec *listensocks; -+ -+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; -+ conn_rec *current_conn; -+ apr_status_t status = APR_EINIT; -+ int i; -+ ap_listen_rec *lr; -+ int curr_pollfd, last_pollfd = 0; -+ apr_pollfd_t *pollset; -+ int offset; -+ void *csd; -+ ap_sb_handle_t *sbh; -+ apr_status_t rv; -+ apr_bucket_alloc_t *bucket_alloc; -+ -+ 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(); -+ csd = NULL; -+ 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); -+ rv = apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname, pchild); -+ if (rv != APR_SUCCESS) { -+ ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf, -+ "Couldn't initialize cross-process lock in child"); -+ clean_child_exit(APEXIT_CHILDFATAL); -+ } -+ -+/* if (unixd_setup_child()) { -+ 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 */ -+ listensocks = apr_pcalloc(pchild, -+ sizeof(*listensocks) * (num_listensocks)); -+ for (lr = ap_listeners, i = 0; i < num_listensocks; lr = lr->next, i++) { -+ listensocks[i].accept_func = lr->accept_func; -+ listensocks[i].sd = lr->sd; -+ } -+ -+ pollset = apr_palloc(pchild, sizeof(*pollset) * num_listensocks); -+ pollset[0].p = pchild; -+ for (i = 0; i < num_listensocks; i++) { -+ pollset[i].desc.s = listensocks[i].sd; -+ pollset[i].desc_type = APR_POLL_SOCKET; -+ pollset[i].reqevents = APR_POLLIN; -+ } -+ -+ mpm_state = AP_MPMQ_RUNNING; -+ -+ bucket_alloc = apr_bucket_alloc_create(pchild); -+ -+ while (!die_now) { -+ /* -+ * (Re)initialize this child to a pre-connection state. -+ */ -+ -+ current_conn = NULL; -+ -+ 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) { -+ offset = 0; -+ } -+ else { -+ /* multiple listening sockets - need to poll */ -+ for (;;) { -+ apr_status_t ret; -+ apr_int32_t n; -+ -+ ret = apr_poll(pollset, num_listensocks, &n, -1); -+ if (ret != APR_SUCCESS) { -+ if (APR_STATUS_IS_EINTR(ret)) { -+ 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, ret, ap_server_conf, -+ "apr_poll: (listen)"); -+ clean_child_exit(1); -+ } -+ /* find a listener */ -+ curr_pollfd = last_pollfd; -+ do { -+ curr_pollfd++; -+ if (curr_pollfd >= num_listensocks) { -+ curr_pollfd = 0; -+ } -+ /* XXX: Should we check for POLLERR? */ -+ if (pollset[curr_pollfd].rtnevents & APR_POLLIN) { -+ last_pollfd = curr_pollfd; -+ offset = curr_pollfd; -+ goto got_fd; -+ } -+ } while (curr_pollfd != last_pollfd); -+ -+ continue; -+ } -+ } -+ got_fd: -+ /* if we accept() something we don't want to die, so we have to -+ * defer the exit -+ */ -+ status = listensocks[offset].accept_func(&csd, -+ &listensocks[offset], 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(); -+ 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 */ -+ if (waitpid(pid, &status, 0) != 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; -+ } -+ 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, just_die); -+ /* Don't catch AP_SIG_GRACEFUL in ONE_PROCESS mode :) */ -+ apr_signal(SIGINT, just_die); -+#ifdef SIGQUIT -+ apr_signal(SIGQUIT, SIG_DFL); -+#endif -+ apr_signal(SIGTERM, just_die); -+ child_main(slot); -+ } -+ -+ (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 doesn't do anything for AP_SIG_GRACEFUL. -+ * Instead, the pod is used for signalling graceful restart. -+ */ -+ apr_signal(AP_SIG_GRACEFUL, SIG_IGN); -+ 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"); -+ 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); -+ } -+ -+ 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_version()); -+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf, -+ "Server built: %s", ap_get_server_built()); -+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH -+ 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_read(&pid, status) == 0) { -+ /* 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 */ -+ } -+ -+ mpm_state = AP_MPMQ_STOPPING; -+ -+ if (shutdown_pending) { -+ /* Time to gracefully shut down: -+ * Kill child processes, tell them to call child_exit, etc... -+ */ -+ if (unixd_killpg(getpgrp(), SIGTERM) < 0) { -+ ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGTERM"); -+ } -+ ap_reclaim_child_processes(1); /* Start with SIGTERM */ -+ -+ /* cleanup pid file on normal shutdown */ -+ { -+ const char *pidfile = NULL; -+ pidfile = ap_server_root_relative (pconf, ap_pid_fname); -+ if ( pidfile != NULL && unlink(pidfile) == 0) -+ ap_log_error(APLOG_MARK, APLOG_INFO, -+ 0, ap_server_conf, -+ "removed PID file %s (pid=%ld)", -+ pidfile, (long)getpid()); -+ } -+ -+ ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, -+ "caught SIGTERM, shutting down"); -+ return 1; -+ } -+ -+ /* we've been told to restart */ -+ apr_signal(SIGHUP, SIG_IGN); -+ if (one_process) { -+ /* 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; -+ } -+ } -+ } -+ 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_read(request_rec *r) -+{ -+ uid_t wanted_uid; -+ gid_t wanted_gid; -+ const char *wanted_username; -+ -+ 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; -+ } -+ } -+ 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; -+ -+ wanted_uid = sconf->uid; -+ wanted_gid = sconf->gid; -+ wanted_username = sconf->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 (wanted_uid != -1 && wanted_gid != -1 && (getuid() != wanted_uid || getgid() != wanted_gid)) { -+ int err = 0; -+ if (setgid(wanted_gid)) { -+ _DBG("setgid(): %s", strerror(errno)); -+ err = 1; -+ } else if (initgroups(wanted_username, wanted_gid)) { -+ _DBG("initgroups(): %s", strerror(errno)); -+ err = 1; -+ } else if (setuid(wanted_uid)) { -+ _DBG("setuid(): %s", 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, 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 */ -+ ap_hook_post_read_request(itk_post_read, 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 *dummy, const char *user_name, const char *group_name) -+{ -+ itk_server_conf *sconf = -+ (itk_server_conf *) ap_get_module_config(cmd->server->module_config, &mpm_itk_module); -+ sconf->username = strdup(user_name); -+ sconf->uid = ap_uname2id(user_name); -+ sconf->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 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, -+ "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."), -+{ NULL } -+}; -+ -+/* == allocate an private server config structure == */ -+static void *itk_create_config(apr_pool_t *p, server_rec *s) -+{ -+ itk_server_conf *c = (itk_server_conf *) -+ apr_pcalloc(p, sizeof(itk_server_conf)); -+ c->uid = c->gid = -1; -+ 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 */ -+ NULL, /* create per-directory config structure */ -+ NULL, /* merge per-directory config structures */ -+ itk_create_config, /* create per-server config structure */ -+ NULL, /* merge per-server config structures */ -+ itk_cmds, /* command apr_table_t */ -+ itk_hooks, /* register hooks */ -+}; -diff -Nur server/mpm/experimental/itk/mpm.h server/mpm/experimental/itk/mpm.h ---- server/mpm/experimental/itk/mpm.h 1970-01-01 01:00:00.000000000 +0100 -+++ server/mpm/experimental/itk/mpm.h 2006-10-29 22:39:54.000000000 +0100 -@@ -0,0 +1,50 @@ -+/* Copyright 2000-2004 The Apache Software Foundation -+ * -+ * Licensed 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. -+ */ -+ -+#include "httpd.h" -+#include "mpm_default.h" -+#include "scoreboard.h" -+#include "unixd.h" -+ -+#ifndef APACHE_MPM_PREFORK_H -+#define APACHE_MPM_PREFORK_H -+ -+#define PREFORK_MPM -+ -+#define MPM_NAME "Prefork" -+ -+#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_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_PREFORK_H */ -diff -Nur server/mpm/experimental/itk/mpm_default.h server/mpm/experimental/itk/mpm_default.h ---- server/mpm/experimental/itk/mpm_default.h 1970-01-01 01:00:00.000000000 +0100 -+++ server/mpm/experimental/itk/mpm_default.h 2006-10-29 22:39:54.000000000 +0100 -@@ -0,0 +1,64 @@ -+/* Copyright 1999-2004 The Apache Software Foundation -+ * -+ * Licensed 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. -+ */ -+ -+#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 */ |