upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

1 files changed, 1728 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.c b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.c
new file mode 100644
index 00000000..6fc0ae60
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.c
@@ -0,0 +1,1728 @@
+/* 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.
+ */
+
+#ifdef WIN32
+
+#define CORE_PRIVATE 
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"	/* for read_config */ 
+#include "http_core.h"		/* for get_remote_host */ 
+#include "http_connection.h"
+#include "apr_portable.h"
+#include "apr_thread_proc.h"
+#include "apr_getopt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_shm.h"
+#include "apr_thread_mutex.h"
+#include "ap_mpm.h"
+#include "ap_config.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+#include "mpm_winnt.h"
+#include "mpm_common.h"
+#include <malloc.h>
+#include "apr_atomic.h"
+
+
+/* scoreboard.c does the heavy lifting; all we do is create the child
+ * score by moving a handle down the pipe into the child's stdin.
+ */
+extern apr_shm_t *ap_scoreboard_shm;
+server_rec *ap_server_conf;
+
+/* Definitions of WINNT MPM specific config globals */
+static HANDLE shutdown_event;	/* used to signal the parent to shutdown */
+static HANDLE restart_event;	/* used to signal the parent to restart */
+
+static char ap_coredump_dir[MAX_STRING_LEN];
+
+static int one_process = 0;
+static char const* signal_arg = NULL;
+
+OSVERSIONINFO osver; /* VER_PLATFORM_WIN32_NT */
+
+static DWORD parent_pid;
+DWORD my_pid;
+
+int ap_threads_per_child = 0;
+int use_acceptex = 1;
+static int thread_limit = DEFAULT_THREAD_LIMIT;
+static int first_thread_limit = 0;
+static int changed_limit_at_restart;
+int winnt_mpm_state = AP_MPMQ_STARTING;
+/* ap_my_generation are used by the scoreboard code */
+ap_generation_t volatile ap_my_generation=0;
+
+
+/* shared by service.c as global, although 
+ * perhaps it should be private.
+ */
+apr_pool_t *pconf;
+
+
+/* definitions from child.c */
+void child_main(apr_pool_t *pconf);
+
+/* used by parent to signal the child to start and exit
+ * NOTE: these are not sophisticated enough for multiple children
+ * so they ultimately should not be shared with child.c
+ */
+extern apr_proc_mutex_t *start_mutex;
+extern HANDLE exit_event;  
+
+/* Only one of these, the pipe from our parent, ment only for
+ * one child worker's consumption (not to be inherited!)
+ * XXX: decorate this name for the trunk branch, was left simplified
+ *      only to make the 2.2 patch trivial to read.
+ */
+static HANDLE pipe;
+
+/* Stub functions until this MPM supports the connection status API */
+
+AP_DECLARE(void) ap_update_connection_status(long conn_id, const char *key, \
+                                             const char *value)
+{
+    /* NOP */
+}
+
+AP_DECLARE(void) ap_reset_connection_status(long conn_id)
+{
+    /* NOP */
+}
+
+AP_DECLARE(apr_array_header_t *) ap_get_status_table(apr_pool_t *p)
+{
+    /* NOP */
+    return NULL;
+}
+
+/* 
+ * Command processors 
+ */
+
+static const char *set_threads_per_child (cmd_parms *cmd, void *dummy, char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_per_child = atoi(arg);
+    if (ap_threads_per_child > thread_limit) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
+                     "value of %d threads,", ap_threads_per_child, 
+                     thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                     " lowering ThreadsPerChild to %d. To increase, please"
+                     " see the", thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " ThreadLimit directive.");
+        ap_threads_per_child = thread_limit;
+    }
+    else if (ap_threads_per_child < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadsPerChild > 0, setting to 1");
+	ap_threads_per_child = 1;
+    }
+    return NULL;
+}
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_thread_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_thread_limit = atoi(arg);
+    /* you cannot change ThreadLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_thread_limit &&
+        tmp_thread_limit != thread_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    thread_limit = tmp_thread_limit;
+    
+    if (thread_limit > MAX_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ThreadLimit of %d exceeds compile time limit "
+                    "of %d threads,", thread_limit, MAX_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
+       thread_limit = MAX_THREAD_LIMIT;
+    } 
+    else if (thread_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadLimit > 0, setting to 1");
+	thread_limit = 1;
+    }
+    return NULL;
+}
+static const char *set_disable_acceptex(cmd_parms *cmd, void *dummy, char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+    if (use_acceptex) {
+        use_acceptex = 0;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, NULL, 
+                     "Disabled use of AcceptEx() WinSock2 API");
+    }
+    return NULL;
+}
+
+static const command_rec winnt_cmds[] = {
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
+  "Number of threads each child creates" ),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+  "Maximum worker threads in a server for this run of Apache"),
+AP_INIT_NO_ARGS("Win32DisableAcceptEx", set_disable_acceptex, NULL, RSRC_CONF,
+  "Disable use of the high performance AcceptEx WinSock2 API to work around buggy VPN or Firewall software"),
+{ NULL }
+};
+
+
+/*
+ * Signalling Apache on NT.
+ *
+ * Under Unix, Apache can be told to shutdown or restart by sending various
+ * signals (HUP, USR, TERM). On NT we don't have easy access to signals, so
+ * we use "events" instead. The parent apache process goes into a loop
+ * where it waits forever for a set of events. Two of those events are
+ * called
+ *
+ *    apPID_shutdown
+ *    apPID_restart
+ *
+ * (where PID is the PID of the apache parent process). When one of these
+ * is signalled, the Apache parent performs the appropriate action. The events
+ * can become signalled through internal Apache methods (e.g. if the child
+ * finds a fatal error and needs to kill its parent), via the service
+ * control manager (the control thread will signal the shutdown event when
+ * requested to stop the Apache service), from the -k Apache command line,
+ * or from any external program which finds the Apache PID from the
+ * httpd.pid file.
+ *
+ * The signal_parent() function, below, is used to signal one of these events.
+ * It can be called by any child or parent process, since it does not
+ * rely on global variables.
+ *
+ * On entry, type gives the event to signal. 0 means shutdown, 1 means 
+ * graceful restart.
+ */
+/*
+ * Initialise the signal names, in the global variables signal_name_prefix, 
+ * signal_restart_name and signal_shutdown_name.
+ */
+#define MAX_SIGNAL_NAME 30  /* Long enough for apPID_shutdown, where PID is an int */
+char signal_name_prefix[MAX_SIGNAL_NAME];
+char signal_restart_name[MAX_SIGNAL_NAME]; 
+char signal_shutdown_name[MAX_SIGNAL_NAME];
+void setup_signal_names(char *prefix)
+{
+    apr_snprintf(signal_name_prefix, sizeof(signal_name_prefix), prefix);    
+    apr_snprintf(signal_shutdown_name, sizeof(signal_shutdown_name), 
+	"%s_shutdown", signal_name_prefix);    
+    apr_snprintf(signal_restart_name, sizeof(signal_restart_name), 
+	"%s_restart", signal_name_prefix);    
+}
+
+int volatile is_graceful = 0;
+
+AP_DECLARE(int) ap_graceful_stop_signalled(void)
+{
+    return is_graceful;
+}
+
+AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type)
+{
+    HANDLE e;
+    char *signal_name;
+    
+    if (parent_pid == my_pid) {
+        switch(type) {
+           case SIGNAL_PARENT_SHUTDOWN: 
+           {
+               SetEvent(shutdown_event); 
+               break;
+           }
+           /* This MPM supports only graceful restarts right now */
+           case SIGNAL_PARENT_RESTART: 
+           case SIGNAL_PARENT_RESTART_GRACEFUL:
+           {
+               is_graceful = 1;
+               SetEvent(restart_event); 
+               break;
+           }
+        }
+	return;
+    }
+
+    switch(type) {
+       case SIGNAL_PARENT_SHUTDOWN: 
+       {
+           signal_name = signal_shutdown_name; 
+           break;
+       }
+       /* This MPM supports only graceful restarts right now */
+       case SIGNAL_PARENT_RESTART: 
+       case SIGNAL_PARENT_RESTART_GRACEFUL:
+       {
+           signal_name = signal_restart_name;     
+           is_graceful = 1;
+           break;
+       }
+       default: 
+           return;
+    }
+
+    e = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_name);
+    if (!e) {
+	/* Um, problem, can't signal the parent, which means we can't
+	 * signal ourselves to die. Ignore for now...
+	 */
+	ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf,
+                     "OpenEvent on %s event", signal_name);
+	return;
+    }
+    if (SetEvent(e) == 0) {
+	/* Same problem as above */
+	ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf,
+                     "SetEvent on %s event", signal_name);
+	CloseHandle(e);
+	return;
+    }
+    CloseHandle(e);
+}
+
+
+/*
+ * Passed the following handles [in sync with send_handles_to_child()]
+ *
+ *   ready event [signal the parent immediately, then close]
+ *   exit event  [save to poll later]
+ *   start mutex [signal from the parent to begin accept()]
+ *   scoreboard shm handle [to recreate the ap_scoreboard]
+ */
+void get_handles_from_parent(server_rec *s, HANDLE *child_exit_event,
+                             apr_proc_mutex_t **child_start_mutex,
+                             apr_shm_t **scoreboard_shm)
+{
+    HANDLE hScore;
+    HANDLE ready_event;
+    HANDLE os_start;
+    DWORD BytesRead;
+    void *sb_shared;
+    apr_status_t rv;
+    
+    /* *** We now do this was back in winnt_rewrite_args
+     * pipe = GetStdHandle(STD_INPUT_HANDLE);
+     */
+    if (!ReadFile(pipe, &ready_event, sizeof(HANDLE),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(HANDLE))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the ready event from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    SetEvent(ready_event);
+    CloseHandle(ready_event);
+
+    if (!ReadFile(pipe, child_exit_event, sizeof(HANDLE),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(HANDLE))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the exit event from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    if (!ReadFile(pipe, &os_start, sizeof(os_start),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(os_start))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the start_mutex from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    *child_start_mutex = NULL;
+    if ((rv = apr_os_proc_mutex_put(child_start_mutex, &os_start, s->process->pool))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Child %d: Unable to access the start_mutex from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    if (!ReadFile(pipe, &hScore, sizeof(hScore),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(hScore))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the scoreboard from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    *scoreboard_shm = NULL;
+    if ((rv = apr_os_shm_put(scoreboard_shm, &hScore, s->process->pool)) 
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Child %d: Unable to access the scoreboard from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    rv = ap_reopen_scoreboard(s->process->pool, scoreboard_shm, 1);
+    if (rv || !(sb_shared = apr_shm_baseaddr_get(*scoreboard_shm))) {
+	ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, 
+                     "Child %d: Unable to reopen the scoreboard from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    /* We must 'initialize' the scoreboard to relink all the
+     * process-local pointer arrays into the shared memory block.
+     */
+    ap_init_scoreboard(sb_shared);
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Child %d: Retrieved our scoreboard from the parent.", my_pid);
+}
+
+
+static int send_handles_to_child(apr_pool_t *p, 
+                                 HANDLE child_ready_event,
+                                 HANDLE child_exit_event, 
+                                 apr_proc_mutex_t *child_start_mutex,
+                                 apr_shm_t *scoreboard_shm,
+                                 HANDLE hProcess, 
+                                 apr_file_t *child_in)
+{
+    apr_status_t rv;
+    HANDLE hCurrentProcess = GetCurrentProcess();
+    HANDLE hDup;
+    HANDLE os_start;
+    HANDLE hScore;
+    DWORD BytesWritten;
+
+    if (!DuplicateHandle(hCurrentProcess, child_ready_event, hProcess, &hDup,
+        EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the ready event handle for the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the exit event handle to the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, child_exit_event, hProcess, &hDup,
+                         EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the exit event handle for the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the exit event handle to the child");
+        return -1;
+    }
+    if ((rv = apr_os_proc_mutex_get(&os_start, child_start_mutex)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to retrieve the start mutex for the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, os_start, hProcess, &hDup,
+                         SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the start mutex to the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the start mutex to the child");
+        return -1;
+    }
+    if ((rv = apr_os_shm_get(&hScore, scoreboard_shm)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to retrieve the scoreboard handle for the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, hScore, hProcess, &hDup,
+                         FILE_MAP_READ | FILE_MAP_WRITE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the scoreboard handle to the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the scoreboard handle to the child");
+        return -1;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Parent: Sent the scoreboard to the child");
+    return 0;
+}
+
+
+/* 
+ * get_listeners_from_parent()
+ * The listen sockets are opened in the parent. This function, which runs
+ * exclusively in the child process, receives them from the parent and
+ * makes them availeble in the child.
+ */
+void get_listeners_from_parent(server_rec *s)
+{
+    WSAPROTOCOL_INFO WSAProtocolInfo;
+    ap_listen_rec *lr;
+    DWORD BytesRead;
+    int lcnt = 0;
+    SOCKET nsd;
+
+    /* Set up a default listener if necessary */
+    if (ap_listeners == NULL) {
+        ap_listen_rec *lr;
+        lr = apr_palloc(s->process->pool, sizeof(ap_listen_rec));
+        lr->sd = NULL;
+        lr->next = ap_listeners;
+        ap_listeners = lr;
+    }
+
+    /* Open the pipe to the parent process to receive the inherited socket
+     * data. The sockets have been set to listening in the parent process.
+     *
+     * *** We now do this was back in winnt_rewrite_args
+     * pipe = GetStdHandle(STD_INPUT_HANDLE);
+     */
+    for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        if (!ReadFile(pipe, &WSAProtocolInfo, sizeof(WSAPROTOCOL_INFO), 
+                      &BytesRead, (LPOVERLAPPED) NULL)) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                         "setup_inherited_listeners: Unable to read socket data from parent");
+            exit(APEXIT_CHILDINIT);
+        }
+        nsd = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO,
+                        &WSAProtocolInfo, 0, 0);
+        if (nsd == INVALID_SOCKET) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf,
+                         "Child %d: setup_inherited_listeners(), WSASocket failed to open the inherited socket.", my_pid);
+            exit(APEXIT_CHILDINIT);
+        }
+
+        if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
+            HANDLE hProcess = GetCurrentProcess();
+            HANDLE dup;
+            if (DuplicateHandle(hProcess, (HANDLE) nsd, hProcess, &dup, 
+                                0, FALSE, DUPLICATE_SAME_ACCESS)) {
+                closesocket(nsd);
+                nsd = (SOCKET) dup;
+            }
+        }
+        else {
+            /* A different approach.  Many users report errors such as 
+             * (32538)An operation was attempted on something that is not 
+             * a socket.  : Parent: WSADuplicateSocket failed...
+             *
+             * This appears that the duplicated handle is no longer recognized
+             * as a socket handle.  SetHandleInformation should overcome that
+             * problem by not altering the handle identifier.  But this won't
+             * work on 9x - it's unsupported.
+             */
+            if (!SetHandleInformation((HANDLE)nsd, HANDLE_FLAG_INHERIT, 0)) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), ap_server_conf,
+                             "set_listeners_noninheritable: SetHandleInformation failed.");
+            }
+        }
+        apr_os_sock_put(&lr->sd, &nsd, s->process->pool);
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Child %d: retrieved %d listeners from parent", my_pid, lcnt);
+}
+
+
+static int send_listeners_to_child(apr_pool_t *p, DWORD dwProcessId, 
+                                   apr_file_t *child_in)
+{
+    apr_status_t rv;
+    int lcnt = 0;
+    ap_listen_rec *lr;
+    LPWSAPROTOCOL_INFO  lpWSAProtocolInfo;
+    DWORD BytesWritten;
+
+    /* Run the chain of open sockets. For each socket, duplicate it 
+     * for the target process then send the WSAPROTOCOL_INFO 
+     * (returned by dup socket) to the child.
+     */
+    for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        int nsd;
+        lpWSAProtocolInfo = apr_pcalloc(p, sizeof(WSAPROTOCOL_INFO));
+        apr_os_sock_get(&nsd,lr->sd);
+        ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS, ap_server_conf,
+                     "Parent: Duplicating socket %d and sending it to child process %d", 
+                     nsd, dwProcessId);
+        if (WSADuplicateSocket(nsd, dwProcessId,
+                               lpWSAProtocolInfo) == SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf,
+                         "Parent: WSADuplicateSocket failed for socket %d. Check the FAQ.", lr->sd );
+            return -1;
+        }
+
+        if ((rv = apr_file_write_full(child_in, lpWSAProtocolInfo, 
+                                      sizeof(WSAPROTOCOL_INFO), &BytesWritten))
+                != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                         "Parent: Unable to write duplicated socket %d to the child.", lr->sd );
+            return -1;
+        }
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Parent: Sent %d listeners to child %d", lcnt, dwProcessId);
+    return 0;
+}
+
+enum waitlist_e {
+    waitlist_ready = 0,
+    waitlist_term = 1
+};
+
+static int create_process(apr_pool_t *p, HANDLE *child_proc, HANDLE *child_exit_event, 
+                          DWORD *child_pid)
+{
+    /* These NEVER change for the lifetime of this parent 
+     */
+    static char **args = NULL;
+    static char pidbuf[28];
+
+    apr_status_t rv;
+    apr_pool_t *ptemp;
+    apr_procattr_t *attr;
+    apr_proc_t new_child;
+    apr_file_t *child_out, *child_err;
+    HANDLE hExitEvent;
+    HANDLE waitlist[2];  /* see waitlist_e */
+    char *cmd;
+    char *cwd;
+    char **env;
+    int envc;
+
+    apr_pool_sub_make(&ptemp, p, NULL);
+
+    /* Build the command line. Should look something like this:
+     * C:/apache/bin/apache.exe -f ap_server_confname 
+     * First, get the path to the executable...
+     */
+    apr_procattr_create(&attr, ptemp);
+    apr_procattr_cmdtype_set(attr, APR_PROGRAM);
+    apr_procattr_detach_set(attr, 1);
+    if (((rv = apr_filepath_get(&cwd, 0, ptemp)) != APR_SUCCESS)
+           || ((rv = apr_procattr_dir_set(attr, cwd)) != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Failed to get the current path");
+    }
+
+    if (!args) {
+        /* Build the args array, only once since it won't change 
+         * for the lifetime of this parent process.
+         */
+        if ((rv = ap_os_proc_filepath(&cmd, ptemp))
+                != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, ERROR_BAD_PATHNAME, ap_server_conf,
+                         "Parent: Failed to get full path of %s", 
+                         ap_server_conf->process->argv[0]);
+            apr_pool_destroy(ptemp);
+            return -1;
+        }
+        
+        args = malloc((ap_server_conf->process->argc + 1) * sizeof (char*));
+        memcpy(args + 1, ap_server_conf->process->argv + 1, 
+               (ap_server_conf->process->argc - 1) * sizeof (char*));
+        args[0] = malloc(strlen(cmd) + 1);
+        strcpy(args[0], cmd);
+        args[ap_server_conf->process->argc] = NULL;
+    }
+    else {
+        cmd = args[0];
+    }
+
+    /* Create a pipe to send handles to the child */
+    if ((rv = apr_procattr_io_set(attr, APR_FULL_BLOCK, 
+                                  APR_NO_PIPE, APR_NO_PIPE)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                        "Parent: Unable to create child stdin pipe.");
+        apr_pool_destroy(ptemp);
+        return -1;
+    }
+
+    /* httpd-2.0/2.2 specific to work around apr_proc_create bugs */
+    /* set "NUL" as sysout for the child */
+    if (((rv = apr_file_open(&child_out, "NUL", APR_WRITE | APR_READ, APR_OS_DEFAULT,p)) 
+            != APR_SUCCESS) ||
+        ((rv = apr_procattr_child_out_set(attr, child_out, NULL))
+            != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                     "Parent: Could not set child process stdout");
+    }
+    if (((rv = apr_file_open_stderr(&child_err, p))
+            != APR_SUCCESS) ||
+        ((rv = apr_procattr_child_err_set(attr, child_err, NULL))
+            != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                     "Parent: Could not set child process stderr");
+    }
+
+    /* Create the child_ready_event */
+    waitlist[waitlist_ready] = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!waitlist[waitlist_ready]) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Could not create ready event for child process");
+        apr_pool_destroy (ptemp);
+        return -1;
+    }
+
+    /* Create the child_exit_event */
+    hExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!hExitEvent) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Could not create exit event for child process");
+        apr_pool_destroy(ptemp);
+        CloseHandle(waitlist[waitlist_ready]);
+        return -1;
+    }
+
+    /* Build the env array */
+    for (envc = 0; _environ[envc]; ++envc) {
+        ;
+    }
+    env = apr_palloc(ptemp, (envc + 2) * sizeof (char*));  
+    memcpy(env, _environ, envc * sizeof (char*));
+    apr_snprintf(pidbuf, sizeof(pidbuf), "AP_PARENT_PID=%i", parent_pid);
+    env[envc] = pidbuf;
+    env[envc + 1] = NULL;
+
+    rv = apr_proc_create(&new_child, cmd, args, env, attr, ptemp);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Failed to create the child process.");
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(waitlist[waitlist_ready]);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+    apr_file_close(child_out);
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                 "Parent: Created child process %d", new_child.pid);
+
+    if (send_handles_to_child(ptemp, waitlist[waitlist_ready], hExitEvent,
+                              start_mutex, ap_scoreboard_shm,
+                              new_child.hproc, new_child.in)) {
+        /*
+         * This error is fatal, mop up the child and move on
+         * We toggle the child's exit event to cause this child 
+         * to quit even as it is attempting to start.
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(waitlist[waitlist_ready]);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    /* Important:
+     * Give the child process a chance to run before dup'ing the sockets.
+     * We have already set the listening sockets noninheritable, but if 
+     * WSADuplicateSocket runs before the child process initializes
+     * the listeners will be inherited anyway.
+     */
+    waitlist[waitlist_term] = new_child.hproc;
+    rv = WaitForMultipleObjects(2, waitlist, FALSE, INFINITE);
+    CloseHandle(waitlist[waitlist_ready]);
+    if (rv != WAIT_OBJECT_0) {
+        /* 
+         * Outch... that isn't a ready signal. It's dead, Jim!
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    if (send_listeners_to_child(ptemp, new_child.pid, new_child.in)) {
+        /*
+         * This error is fatal, mop up the child and move on
+         * We toggle the child's exit event to cause this child 
+         * to quit even as it is attempting to start.
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    apr_file_close(new_child.in);
+
+    *child_exit_event = hExitEvent;
+    *child_proc = new_child.hproc;
+    *child_pid = new_child.pid;
+
+    return 0;
+}
+
+/***********************************************************************
+ * master_main()
+ * master_main() runs in the parent process.  It creates the child 
+ * process which handles HTTP requests then waits on one of three 
+ * events:
+ *
+ * restart_event
+ * -------------
+ * The restart event causes master_main to start a new child process and
+ * tells the old child process to exit (by setting the child_exit_event).
+ * The restart event is set as a result of one of the following:
+ * 1. An apache -k restart command on the command line
+ * 2. A command received from Windows service manager which gets 
+ *    translated into an ap_signal_parent(SIGNAL_PARENT_RESTART)
+ *    call by code in service.c.
+ * 3. The child process calling ap_signal_parent(SIGNAL_PARENT_RESTART)
+ *    as a result of hitting MaxRequestsPerChild.
+ *
+ * shutdown_event 
+ * --------------
+ * The shutdown event causes master_main to tell the child process to 
+ * exit and that the server is shutting down. The shutdown event is
+ * set as a result of one of the following:
+ * 1. An apache -k shutdown command on the command line
+ * 2. A command received from Windows service manager which gets
+ *    translated into an ap_signal_parent(SIGNAL_PARENT_SHUTDOWN)
+ *    call by code in service.c.
+ *
+ * child process handle
+ * --------------------
+ * The child process handle will be signaled if the child process 
+ * exits for any reason. In a normal running server, the signaling
+ * of this event means that the child process has exited prematurely
+ * due to a seg fault or other irrecoverable error. For server
+ * robustness, master_main will restart the child process under this 
+ * condtion.
+ *
+ * master_main uses the child_exit_event to signal the child process
+ * to exit.
+ **********************************************************************/
+#define NUM_WAIT_HANDLES 3
+#define CHILD_HANDLE     0
+#define SHUTDOWN_HANDLE  1
+#define RESTART_HANDLE   2
+static int master_main(server_rec *s, HANDLE shutdown_event, HANDLE restart_event)
+{
+    int rv, cld;
+    int restart_pending;
+    int shutdown_pending;
+    HANDLE child_exit_event;
+    HANDLE event_handles[NUM_WAIT_HANDLES];
+    DWORD child_pid;
+
+    restart_pending = shutdown_pending = 0;
+
+    event_handles[SHUTDOWN_HANDLE] = shutdown_event;
+    event_handles[RESTART_HANDLE] = restart_event;
+
+    /* Create a single child process */
+    rv = create_process(pconf, &event_handles[CHILD_HANDLE], 
+                        &child_exit_event, &child_pid);
+    if (rv < 0) 
+    {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "master_main: create child process failed. Exiting.");
+        shutdown_pending = 1;
+        goto die_now;
+    }
+    if (!strcasecmp(signal_arg, "runservice")) {
+        mpm_service_started();
+    }
+
+    /* Update the scoreboard. Note that there is only a single active
+     * child at once.
+     */
+    ap_scoreboard_image->parent[0].quiescing = 0;
+    ap_scoreboard_image->parent[0].pid = child_pid;
+
+    /* Wait for shutdown or restart events or for child death */
+    winnt_mpm_state = AP_MPMQ_RUNNING;
+    rv = WaitForMultipleObjects(NUM_WAIT_HANDLES, (HANDLE *) event_handles, FALSE, INFINITE);
+    cld = rv - WAIT_OBJECT_0;
+    if (rv == WAIT_FAILED) {
+        /* Something serious is wrong */
+        ap_log_error(APLOG_MARK,APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "master_main: WaitForMultipeObjects WAIT_FAILED -- doing server shutdown");
+        shutdown_pending = 1;
+    }
+    else if (rv == WAIT_TIMEOUT) {
+        /* Hey, this cannot happen */
+        ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                     "master_main: WaitForMultipeObjects with INFINITE wait exited with WAIT_TIMEOUT");
+        shutdown_pending = 1;
+    }
+    else if (cld == SHUTDOWN_HANDLE) {
+        /* shutdown_event signalled */
+        shutdown_pending = 1;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, s, 
+                     "Parent: Received shutdown signal -- Shutting down the server.");
+        if (ResetEvent(shutdown_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                         "ResetEvent(shutdown_event)");
+        }
+    }
+    else if (cld == RESTART_HANDLE) {
+        /* Received a restart event. Prepare the restart_event to be reused 
+         * then signal the child process to exit. 
+         */
+        restart_pending = 1;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, 
+                     "Parent: Received restart signal -- Restarting the server.");
+        if (ResetEvent(restart_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                         "Parent: ResetEvent(restart_event) failed.");
+        }
+        if (SetEvent(child_exit_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                         "Parent: SetEvent for child process %d failed.", 
+                         event_handles[CHILD_HANDLE]);
+        }
+        /* Don't wait to verify that the child process really exits, 
+         * just move on with the restart.
+         */
+        CloseHandle(event_handles[CHILD_HANDLE]);
+        event_handles[CHILD_HANDLE] = NULL;
+    }
+    else {
+        /* The child process exited prematurely due to a fatal error. */
+        DWORD exitcode;
+        if (!GetExitCodeProcess(event_handles[CHILD_HANDLE], &exitcode)) {
+            /* HUH? We did exit, didn't we? */
+            exitcode = APEXIT_CHILDFATAL;
+        }
+        if (   exitcode == APEXIT_CHILDFATAL 
+            || exitcode == APEXIT_CHILDINIT
+            || exitcode == APEXIT_INIT) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf, 
+                         "Parent: child process exited with status %u -- Aborting.", exitcode);
+        }
+        else {
+            int i;
+            restart_pending = 1;
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, 
+                         "Parent: child process exited with status %u -- Restarting.", exitcode);
+            for (i = 0; i < ap_threads_per_child; i++) {
+                ap_update_child_status_from_indexes(0, i, SERVER_DEAD, NULL);
+            }
+        }
+        CloseHandle(event_handles[CHILD_HANDLE]);
+        event_handles[CHILD_HANDLE] = NULL;
+    }
+    if (restart_pending) {
+        ++ap_my_generation;
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+    }
+die_now:
+    if (shutdown_pending) 
+    {
+        int timeout = 30000;  /* Timeout is milliseconds */
+        winnt_mpm_state = AP_MPMQ_STOPPING;
+
+        /* This shutdown is only marginally graceful. We will give the 
+         * child a bit of time to exit gracefully. If the time expires,
+         * the child will be wacked.
+         */
+        if (!strcasecmp(signal_arg, "runservice")) {
+            mpm_service_stopping();
+        }
+        /* Signal the child processes to exit */
+        if (SetEvent(child_exit_event) == 0) {
+                ap_log_error(APLOG_MARK,APLOG_ERR, apr_get_os_error(), ap_server_conf,
+                             "Parent: SetEvent for child process %d failed", event_handles[CHILD_HANDLE]);
+        }
+        if (event_handles[CHILD_HANDLE]) {
+            rv = WaitForSingleObject(event_handles[CHILD_HANDLE], timeout);
+            if (rv == WAIT_OBJECT_0) {
+                ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                             "Parent: Child process exited successfully.");
+                CloseHandle(event_handles[CHILD_HANDLE]);
+                event_handles[CHILD_HANDLE] = NULL;
+            }
+            else {
+                ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                             "Parent: Forcing termination of child process %d ", event_handles[CHILD_HANDLE]);
+                TerminateProcess(event_handles[CHILD_HANDLE], 1);
+                CloseHandle(event_handles[CHILD_HANDLE]);
+                event_handles[CHILD_HANDLE] = NULL;
+            }
+        }
+        CloseHandle(child_exit_event);
+        return 0;  /* Tell the caller we do not want to restart */
+    }
+    winnt_mpm_state = AP_MPMQ_STARTING;
+    CloseHandle(child_exit_event);
+    return 1;      /* Tell the caller we want a restart */
+}
+
+/* service_nt_main_fn needs to append the StartService() args 
+ * outside of our call stack and thread as the service starts...
+ */
+apr_array_header_t *mpm_new_argv;
+
+/* Remember service_to_start failures to log and fail in pre_config.
+ * Remember inst_argc and inst_argv for installing or starting the
+ * service after we preflight the config.
+ */
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = MAXIMUM_WAIT_OBJECTS;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_STATIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            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 = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = winnt_mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+} 
+
+#define SERVICE_UNSET (-1)
+static apr_status_t service_set = SERVICE_UNSET;
+static apr_status_t service_to_start_success;
+static int inst_argc;
+static const char * const *inst_argv;
+static char *service_name = NULL;
+    
+void winnt_rewrite_args(process_rec *process) 
+{
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k runservice [transition for WinNT, nothing for Win9x]
+     *   -k (!)install [error out if name is not installed]
+     *   -k uninstall
+     *   -k stop
+     *   -k shutdown (same as -k stop). Maintained for backward compatability.
+     *
+     * We can't leave this phase until we know our identity
+     * and modify the command arguments appropriately.
+     *
+     * We do not care if the .conf file exists or is parsable when
+     * attempting to stop or uninstall a service.
+     */
+    apr_status_t rv;
+    char *def_server_root;
+    char *binpath;
+    char optbuf[3];
+    const char *optarg;
+    int fixed_args;
+    char *pid;
+    apr_getopt_t *opt;
+    int running_as_service = 1;
+    int errout = 0;
+
+    pconf = process->pconf;
+
+    osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+    GetVersionEx(&osver);
+
+    /* AP_PARENT_PID is only valid in the child */
+    pid = getenv("AP_PARENT_PID");
+    if (pid) 
+    {
+        HANDLE filehand;
+        HANDLE hproc = GetCurrentProcess();
+
+        /* This is the child */
+        my_pid = GetCurrentProcessId();
+        parent_pid = (DWORD) atol(pid);
+
+        /* Prevent holding open the (nonexistant) console */
+        real_exit_code = 0;
+
+        /* The parent gave us stdin, we need to remember this
+         * handle, and no longer inherit it at our children
+         * (we can't slurp it up now, we just aren't ready yet).
+         * The original handle is closed below, at apr_file_dup2()
+         */
+        pipe = GetStdHandle(STD_INPUT_HANDLE);
+        if (DuplicateHandle(hproc, pipe,
+                            hproc, &filehand, 0, FALSE,
+                            DUPLICATE_SAME_ACCESS)) {
+            pipe = filehand;
+        }
+
+        /* The parent gave us stdout of the NUL device,
+         * and expects us to suck up stdin of all of our
+         * shared handles and data from the parent.
+         * Don't infect child processes with our stdin
+         * handle, use another handle to NUL!
+         */
+        {
+            apr_file_t *infile, *outfile;
+            if ((apr_file_open_stdout(&outfile, process->pool) == APR_SUCCESS)
+             && (apr_file_open_stdin(&infile, process->pool) == APR_SUCCESS))
+                apr_file_dup2(infile, outfile, process->pool);
+        }
+
+        /* This child needs the existing stderr opened for logging,
+         * already 
+         */
+
+        /* The parent is responsible for providing the
+         * COMPLETE ARGUMENTS REQUIRED to the child.
+         *
+         * No further argument parsing is needed, but
+         * for good measure we will provide a simple
+         * signal string for later testing.
+         */
+        signal_arg = "runchild";
+        return;
+    }
+    
+    /* This is the parent, we have a long way to go :-) */
+    parent_pid = my_pid = GetCurrentProcessId();
+
+    /* This behavior is voided by setting real_exit_code to 0 */
+    atexit(hold_console_open_on_error);
+
+    /* Rewrite process->argv[]; 
+     *
+     * strip out -k signal into signal_arg
+     * strip out -n servicename and set the names
+     * add default -d serverroot from the path of this executable
+     * 
+     * The end result will look like:
+     *
+     * The invocation command (%0)
+     *     The -d serverroot default from the running executable
+     *         The requested service's (-n) registry ConfigArgs
+     *             The WinNT SCM's StartService() args
+     */
+    if ((rv = ap_os_proc_filepath(&binpath, process->pconf))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK,APLOG_CRIT, rv, NULL, 
+                     "Failed to get the full path of %s", process->argv[0]);
+        exit(APEXIT_INIT);
+    }
+    /* WARNING: There is an implict assumption here that the
+     * executable resides in ServerRoot or ServerRoot\bin
+     */
+    def_server_root = (char *) apr_filename_of_pathname(binpath);
+    if (def_server_root > binpath) {
+        *(def_server_root - 1) = '\0';
+        def_server_root = (char *) apr_filename_of_pathname(binpath);
+        if (!strcasecmp(def_server_root, "bin"))
+            *(def_server_root - 1) = '\0';
+    }
+    apr_filepath_merge(&def_server_root, NULL, binpath, 
+                       APR_FILEPATH_TRUENAME, process->pool);
+
+    /* Use process->pool so that the rewritten argv
+     * lasts for the lifetime of the server process,
+     * because pconf will be destroyed after the 
+     * initial pre-flight of the config parser.
+     */
+    mpm_new_argv = apr_array_make(process->pool, process->argc + 2,
+                                  sizeof(const char *));
+    *(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
+    *(const char **)apr_array_push(mpm_new_argv) = "-d";
+    *(const char **)apr_array_push(mpm_new_argv) = def_server_root;
+
+    fixed_args = mpm_new_argv->nelts;
+
+    optbuf[0] = '-';
+    optbuf[2] = '\0';
+    apr_getopt_init(&opt, process->pool, process->argc, (char**) process->argv);
+    opt->errfn = NULL;
+    while ((rv = apr_getopt(opt, "wn:k:" AP_SERVER_BASEARGS, 
+                            optbuf + 1, &optarg)) == APR_SUCCESS) {
+        switch (optbuf[1]) {
+
+        /* Shortcuts; include the -w option to hold the window open on error.
+         * This must not be toggled once we reset real_exit_code to 0!
+         */
+        case 'w':
+            if (real_exit_code)
+                real_exit_code = 2;
+            break;
+
+        case 'n':
+            service_set = mpm_service_set_name(process->pool, &service_name, 
+                                               optarg);
+            break;
+
+        case 'k':
+            signal_arg = optarg;
+            break;
+
+        case 'E':
+            errout = 1;
+            /* Fall through so the Apache main() handles the 'E' arg */
+        default:
+            *(const char **)apr_array_push(mpm_new_argv) =
+                apr_pstrdup(process->pool, optbuf);
+
+            if (optarg) {
+                *(const char **)apr_array_push(mpm_new_argv) = optarg;
+            }
+            break;
+        }
+    }
+    
+    /* back up to capture the bad argument */
+    if (rv == APR_BADCH || rv == APR_BADARG) {
+        opt->ind--;
+    }
+
+    while (opt->ind < opt->argc) {
+        *(const char **)apr_array_push(mpm_new_argv) =
+            apr_pstrdup(process->pool, opt->argv[opt->ind++]);
+    }
+
+    /* Track the number of args actually entered by the user */
+    inst_argc = mpm_new_argv->nelts - fixed_args;
+
+    /* Provide a default 'run' -k arg to simplify signal_arg tests */
+    if (!signal_arg)
+    {
+        signal_arg = "run";
+        running_as_service = 0;
+    }
+
+    if (!strcasecmp(signal_arg, "runservice")) 
+    {
+        /* Start the NT Service _NOW_ because the WinNT SCM is 
+         * expecting us to rapidly assume control of our own 
+         * process, the SCM will tell us our service name, and
+         * may have extra StartService() command arguments to
+         * add for us.
+         *
+         * The SCM will generally invoke the executable with
+         * the c:\win\system32 default directory.  This is very
+         * lethal if folks use ServerRoot /foopath on windows
+         * without a drive letter.  Change to the default root
+         * (path to apache root, above /bin) for safety.
+         */
+        apr_filepath_set(def_server_root, process->pool);
+        
+        /* Any other process has a console, so we don't to begin
+         * a Win9x service until the configuration is parsed and
+         * any command line errors are reported.
+         *
+         * We hold the return value so that we can die in pre_config
+         * after logging begins, and the failure can land in the log.
+         */
+        if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT) 
+        {
+            apr_file_t *nullfile;
+
+            if (!errout) {
+                mpm_nt_eventlog_stderr_open(service_name, process->pool);
+            }
+            service_to_start_success = mpm_service_to_start(&service_name,
+                                                            process->pool);
+            if (service_to_start_success == APR_SUCCESS) {
+                service_set = APR_SUCCESS;
+            }
+
+            /* Open a null handle to soak stdout in this process.
+             * Windows service processes are missing any file handle
+             * usable for stdin/out/err.  This was the cause of later 
+             * trouble with invocations of apr_file_open_stdout()
+             */
+            if ((rv = apr_file_open(&nullfile, "NUL",
+                                    APR_READ | APR_WRITE, APR_OS_DEFAULT,
+                                    process->pool)) == APR_SUCCESS) {
+                apr_file_t *nullstdout;
+                if (apr_file_open_stdout(&nullstdout, process->pool)
+                        == APR_SUCCESS)
+                    apr_file_dup2(nullstdout, nullfile, process->pool);
+                apr_file_close(nullfile);
+            }
+        }
+    }
+
+    /* Get the default for any -k option, except run */
+    if (service_set == SERVICE_UNSET && strcasecmp(signal_arg, "run")) {
+        service_set = mpm_service_set_name(process->pool, &service_name,
+                                           AP_DEFAULT_SERVICE_NAME);
+    }
+
+    if (!strcasecmp(signal_arg, "install")) /* -k install */
+    {
+        if (service_set == APR_SUCCESS) 
+        {
+            ap_log_error(APLOG_MARK,APLOG_ERR, 0, NULL,
+                 "%s: Service is already installed.", service_name);
+            exit(APEXIT_INIT);
+        }
+    }
+    else if (running_as_service)
+    {
+        if (service_set == APR_SUCCESS) 
+        {
+            /* Attempt to Uninstall, or stop, before 
+             * we can read the arguments or .conf files
+             */
+            if (!strcasecmp(signal_arg, "uninstall")) {
+                rv = mpm_service_uninstall();
+                exit(rv);
+            }
+
+            if ((!strcasecmp(signal_arg, "stop")) || 
+                (!strcasecmp(signal_arg, "shutdown"))) {
+                mpm_signal_service(process->pool, 0);
+                exit(0);
+            }
+
+            rv = mpm_merge_service_args(process->pool, mpm_new_argv, 
+                                        fixed_args);
+            if (rv == APR_SUCCESS) {
+                ap_log_error(APLOG_MARK,APLOG_INFO, 0, NULL,
+                             "Using ConfigArgs of the installed service "
+                             "\"%s\".", service_name);
+            }
+            else  {
+                ap_log_error(APLOG_MARK,APLOG_WARNING, rv, NULL,
+                             "No installed ConfigArgs for the service "
+                             "\"%s\", using Apache defaults.", service_name);
+            }
+        }
+        else
+        {
+            ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL,
+                 "No installed service named \"%s\".", service_name);
+            exit(APEXIT_INIT);
+        }
+    }
+    if (strcasecmp(signal_arg, "install") && service_set && service_set != SERVICE_UNSET) 
+    {
+        ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL,
+             "No installed service named \"%s\".", service_name);
+        exit(APEXIT_INIT);
+    }
+    
+    /* Track the args actually entered by the user.
+     * These will be used for the -k install parameters, as well as
+     * for the -k start service override arguments.
+     */
+    inst_argv = (const char * const *)mpm_new_argv->elts
+        + mpm_new_argv->nelts - inst_argc;
+
+    process->argc = mpm_new_argv->nelts; 
+    process->argv = (const char * const *) mpm_new_argv->elts;
+}
+
+
+static int winnt_pre_config(apr_pool_t *pconf_, apr_pool_t *plog, apr_pool_t *ptemp) 
+{
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k runservice [WinNT errors logged from rewrite_args]
+     */
+
+    /* Initialize shared static objects. 
+     */
+    pconf = pconf_;
+
+    if (ap_exists_config_define("ONE_PROCESS") ||
+        ap_exists_config_define("DEBUG"))
+        one_process = -1;
+
+    if (!strcasecmp(signal_arg, "runservice")
+            && (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+            && (service_to_start_success != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK,APLOG_CRIT, service_to_start_success, NULL, 
+                     "%s: Unable to start the service manager.",
+                     service_name);
+        exit(APEXIT_INIT);
+    }
+
+    /* Win9x: disable AcceptEx */
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
+        use_acceptex = 0;
+    }
+
+    ap_listen_pre_config();
+    ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+#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 winnt_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec* s)
+{
+    static int restart_num = 0;
+    apr_status_t rv = 0;
+
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k install
+     *   -k config
+     *   -k start
+     *   -k restart
+     *   -k runservice [Win95, only once - after we parsed the config]
+     *
+     * because all of these signals are useful _only_ if there
+     * is a valid conf\httpd.conf environment to start.
+     *
+     * We reached this phase by avoiding errors that would cause
+     * these options to fail unexpectedly in another process.
+     */
+
+    if (!strcasecmp(signal_arg, "install")) {
+        rv = mpm_service_install(ptemp, inst_argc, inst_argv, 0);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+    if (!strcasecmp(signal_arg, "config")) {
+        rv = mpm_service_install(ptemp, inst_argc, inst_argv, 1);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+
+    if (!strcasecmp(signal_arg, "start")) {
+        ap_listen_rec *lr;
+
+        /* Close the listening sockets. */
+        for (lr = ap_listeners; lr; lr = lr->next) {
+            apr_socket_close(lr->sd);
+            lr->active = 0;
+        }
+        rv = mpm_service_start(ptemp, inst_argc, inst_argv);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+
+    if (!strcasecmp(signal_arg, "restart")) {
+        mpm_signal_service(ptemp, 1);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+
+    if (parent_pid == my_pid) 
+    {
+        if (restart_num++ == 1) 
+        {
+            /* This code should be run once in the parent and not run
+             * across a restart
+             */
+            PSECURITY_ATTRIBUTES sa = GetNullACL();  /* returns NULL if invalid (Win95?) */
+            setup_signal_names(apr_psprintf(pconf,"ap%d", parent_pid));
+
+            ap_log_pid(pconf, ap_pid_fname);
+            
+            /* Create shutdown event, apPID_shutdown, where PID is the parent 
+             * Apache process ID. Shutdown is signaled by 'apache -k shutdown'.
+             */
+            shutdown_event = CreateEvent(sa, FALSE, FALSE, signal_shutdown_name);
+            if (!shutdown_event) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                             "Parent: Cannot create shutdown event %s", signal_shutdown_name);
+                CleanNullACL((void *)sa);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+
+            /* Create restart event, apPID_restart, where PID is the parent 
+             * Apache process ID. Restart is signaled by 'apache -k restart'.
+             */
+            restart_event = CreateEvent(sa, FALSE, FALSE, signal_restart_name);
+            if (!restart_event) {
+                CloseHandle(shutdown_event);
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                             "Parent: Cannot create restart event %s", signal_restart_name);
+                CleanNullACL((void *)sa);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+            CleanNullACL((void *)sa);
+
+            /* Now that we are flying at 15000 feet... 
+             * wipe out the Win95 service console,
+             * signal the SCM the WinNT service started, or
+             * if not a service, setup console handlers instead.
+             */
+            if (!strcasecmp(signal_arg, "runservice"))
+            {
+                if (osver.dwPlatformId != VER_PLATFORM_WIN32_NT) 
+                {
+                    rv = mpm_service_to_start(&service_name,
+                                              s->process->pool);
+                    if (rv != APR_SUCCESS) {
+                        ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                                     "%s: Unable to start the service manager.",
+                                     service_name);
+                        return HTTP_INTERNAL_SERVER_ERROR;
+                    }
+                }
+            }
+
+            /* Create the start mutex, as an unnamed object for security.
+             * Ths start mutex is used during a restart to prevent more than 
+             * one child process from entering the accept loop at once.
+             */
+            rv =  apr_proc_mutex_create(&start_mutex, NULL,
+                                        APR_LOCK_DEFAULT,
+                                        ap_server_conf->process->pool);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                             "%s: Unable to create the start_mutex.",
+                             service_name);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }            
+        }
+        /* Always reset our console handler to be the first, even on a restart
+        *  because some modules (e.g. mod_perl) might have set a console 
+        *  handler to terminate the process.
+        */
+        if (strcasecmp(signal_arg, "runservice"))
+            mpm_start_console_handler();
+    }
+    else /* parent_pid != my_pid */
+    {
+        mpm_start_child_console_handler();
+    }
+    return OK;
+}
+
+/* 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 winnt_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    /* Initialize shared static objects. 
+     */
+    ap_server_conf = s;
+
+    if (parent_pid != my_pid) {
+        return OK;
+    }
+
+    /* We cannot initialize our listeners if we are restarting
+     * (the parent process already has glomed on to them)
+     * nor should we do so for service reconfiguration 
+     * (since the service may already be running.)
+     */
+    if (!strcasecmp(signal_arg, "restart") 
+            || !strcasecmp(signal_arg, "config")) {
+        return OK;
+    }
+
+    if (ap_setup_listeners(s) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, 
+                     NULL, "no listening sockets available, shutting down");
+        return DONE;
+    }
+
+    return OK;
+}
+
+static void winnt_child_init(apr_pool_t *pchild, struct server_rec *s)
+{
+    apr_status_t rv;
+
+    setup_signal_names(apr_psprintf(pchild,"ap%d", parent_pid));
+
+    /* This is a child process, not in single process mode */
+    if (!one_process) {
+        /* Set up events and the scoreboard */
+        get_handles_from_parent(s, &exit_event, &start_mutex, 
+                                &ap_scoreboard_shm);
+
+        /* Set up the listeners */
+        get_listeners_from_parent(s);
+
+        /* Done reading from the parent, close that channel */
+        CloseHandle(pipe);
+
+        ap_my_generation = ap_scoreboard_image->global->running_generation;
+    }
+    else {
+        /* Single process mode - this lock doesn't even need to exist */
+        rv = apr_proc_mutex_create(&start_mutex, signal_name_prefix, 
+                                   APR_LOCK_DEFAULT, s->process->pool);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                         "%s child %d: Unable to init the start_mutex.",
+                         service_name, my_pid);
+            exit(APEXIT_CHILDINIT);
+        }
+        
+        /* Borrow the shutdown_even as our _child_ loop exit event */
+        exit_event = shutdown_event;
+    }
+}
+
+
+AP_DECLARE(int) ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s )
+{
+    static int restart = 0;            /* Default is "not a restart" */
+
+    if (!restart) {
+        first_thread_limit = thread_limit;
+    }
+
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, APR_SUCCESS, ap_server_conf,
+                     "WARNING: Attempt to change ThreadLimit ignored "
+                     "during restart");
+        changed_limit_at_restart = 0;
+    }
+    
+    /* ### If non-graceful restarts are ever introduced - we need to rerun 
+     * the pre_mpm hook on subsequent non-graceful restarts.  But Win32 
+     * has only graceful style restarts - and we need this hook to act 
+     * the same on Win32 as on Unix.
+     */
+    if (!restart && ((parent_pid == my_pid) || one_process)) {
+        /* Set up the scoreboard. */
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            return 1;
+        }
+    }
+    
+    if ((parent_pid != my_pid) || one_process) 
+    {
+        /* The child process or in one_process (debug) mode 
+         */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                     "Child %d: Child process is running", my_pid);
+
+        child_main(pconf);
+
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                     "Child %d: Child process is exiting", my_pid);        
+        return 1;
+    }
+    else 
+    {
+        /* A real-honest to goodness parent */
+        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_NOTICE, 0, ap_server_conf,
+                     "Server built: %s", ap_get_server_built());
+
+        restart = master_main(ap_server_conf, shutdown_event, restart_event);
+
+        if (!restart) 
+        {
+            /* Shutting down. Clean up... */
+            const char *pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+
+            if (pidfile != NULL && unlink(pidfile) == 0) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS,
+                             ap_server_conf, "removed PID file %s (pid=%ld)",
+                             pidfile, GetCurrentProcessId());
+            }
+            apr_proc_mutex_destroy(start_mutex);
+
+            CloseHandle(restart_event);
+            CloseHandle(shutdown_event);
+
+            return 1;
+        }
+    }
+
+    return 0; /* Restart */
+}
+
+static void winnt_hooks(apr_pool_t *p)
+{
+    /* The prefork 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};
+
+    ap_hook_pre_config(winnt_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_post_config(winnt_post_config, NULL, NULL, 0);
+    ap_hook_child_init(winnt_child_init, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_open_logs(winnt_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+}
+
+AP_MODULE_DECLARE_DATA module mpm_winnt_module = {
+    MPM20_MODULE_STUFF,
+    winnt_rewrite_args,         /* hook to run before apache parses args */
+    NULL,			/* create per-directory config structure */
+    NULL,			/* merge per-directory config structures */
+    NULL,			/* create per-server config structure */
+    NULL,			/* merge per-server config structures */
+    winnt_cmds,		        /* command apr_table_t */
+    winnt_hooks 		/* register_hooks */
+};
+
+#endif /* def WIN32 */