fc2572f60b
xrdp_chansrv_%8.8x_main_term and xrdp_chansrv_%8.8x_thread_done are both wait objects, not sockets. They are created and cleaned up in chansrv.c Wait objects are pairs of file descriptors on POSIX. They are closed automatically when the process exits. On Windows, wait objects are handles that are closed by CloseHandle(). Those handles should also be closed on the process exit. In any case, there is no way for a parent process to clean up file handles of the child process.
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2013
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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*
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* @file sessvc.c
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* @brief Session supervisor
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* @author Simone Fedele
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*
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*/
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#if defined(HAVE_CONFIG_H)
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#include "config_ac.h"
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#endif
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#include "file_loc.h"
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#include "os_calls.h"
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#include "arch.h"
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static int g_term = 0;
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/*****************************************************************************/
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void
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term_signal_handler(int sig)
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{
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g_writeln("xrdp-sessvc: term_signal_handler: got signal %d", sig);
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g_term = 1;
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}
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/*****************************************************************************/
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void
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nil_signal_handler(int sig)
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{
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g_writeln("xrdp-sessvc: nil_signal_handler: got signal %d", sig);
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}
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/******************************************************************************/
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int
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main(int argc, char **argv)
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{
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int ret = 0;
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int chansrv_pid = 0;
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int wm_pid = 0;
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int x_pid = 0;
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int lerror = 0;
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char exe_path[262];
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g_init("xrdp-sessvc");
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g_memset(exe_path, 0, sizeof(exe_path));
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if (argc < 3)
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{
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g_writeln("xrdp-sessvc: exiting, not enough parameters");
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g_deinit();
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return 1;
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}
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g_signal_terminate(term_signal_handler); /* SIGTERM */
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g_signal_user_interrupt(term_signal_handler); /* SIGINT */
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g_signal_pipe(nil_signal_handler); /* SIGPIPE */
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x_pid = g_atoi(argv[1]);
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wm_pid = g_atoi(argv[2]);
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g_writeln("xrdp-sessvc: waiting for X (pid %d) and WM (pid %d)",
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x_pid, wm_pid);
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/* run xrdp-chansrv as a separate process */
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chansrv_pid = g_fork();
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if (chansrv_pid == -1)
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{
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g_writeln("xrdp-sessvc: fork error");
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g_deinit();
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return 1;
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}
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else if (chansrv_pid == 0) /* child */
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{
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g_set_current_dir(XRDP_SBIN_PATH);
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g_snprintf(exe_path, 261, "%s/xrdp-chansrv", XRDP_SBIN_PATH);
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g_execlp3(exe_path, "xrdp-chansrv", 0);
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/* should not get here */
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g_writeln("xrdp-sessvc: g_execlp3() failed");
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g_deinit();
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return 1;
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}
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lerror = 0;
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/* wait for window manager to get done */
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ret = g_waitpid(wm_pid);
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while ((ret == 0) && !g_term)
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{
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ret = g_waitpid(wm_pid);
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g_sleep(1);
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}
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if (ret < 0)
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{
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lerror = g_get_errno();
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}
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g_writeln("xrdp-sessvc: WM is dead (waitpid said %d, errno is %d) "
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"exiting...", ret, lerror);
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/* kill channel server */
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g_writeln("xrdp-sessvc: stopping channel server");
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g_sigterm(chansrv_pid);
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ret = g_waitpid(chansrv_pid);
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while ((ret == 0) && !g_term)
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{
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ret = g_waitpid(chansrv_pid);
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g_sleep(1);
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}
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/* kill X server */
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g_writeln("xrdp-sessvc: stopping X server");
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g_sigterm(x_pid);
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ret = g_waitpid(x_pid);
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while ((ret == 0) && !g_term)
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{
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ret = g_waitpid(x_pid);
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g_sleep(1);
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}
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g_writeln("xrdp-sessvc: clean exit");
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g_deinit();
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return 0;
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}
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