Import Upstream version 1.0.3
This commit is contained in:
Guus Sliepen
parent
ed8d36a434
commit
c12028eeaa
196 changed files with 43077 additions and 32886 deletions
860
src/process.c
860
src/process.c
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@ -1,7 +1,7 @@
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/*
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process.c -- process management functions
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Copyright (C) 1999-2002 Ivo Timmermans <itimmermans@bigfoot.com>,
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2000-2002 Guus Sliepen <guus@sliepen.warande.net>
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Copyright (C) 1999-2004 Ivo Timmermans <ivo@tinc-vpn.org>,
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2000-2004 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -17,304 +17,420 @@
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: process.c,v 1.1.2.39 2002/03/26 12:00:38 guus Exp $
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$Id: process.c 1397 2004-11-01 15:18:22Z guus $
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*/
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#include "config.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <syslog.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <termios.h>
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#include <pidfile.h>
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#include <utils.h>
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#include <xalloc.h>
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#include "conf.h"
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#include "process.h"
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#include "subnet.h"
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#include "device.h"
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#include "connection.h"
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#include "device.h"
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#include "system.h"
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#include "conf.h"
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#include "connection.h"
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#include "device.h"
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#include "edge.h"
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#include "logger.h"
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#include "node.h"
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#include "pidfile.h"
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#include "process.h"
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#include "subnet.h"
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#include "utils.h"
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#include "xalloc.h"
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/* If zero, don't detach from the terminal. */
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int do_detach = 1;
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bool do_detach = true;
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bool sighup = false;
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bool sigalrm = false;
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extern char *identname;
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extern char *pidfilename;
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extern char **g_argv;
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extern bool use_logfile;
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extern volatile bool running;
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sigset_t emptysigset;
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static int saved_debug_lvl = 0;
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static int saved_debug_level = -1;
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extern int sighup;
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extern int sigalrm;
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extern int do_purge;
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void memory_full(int size)
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static void memory_full(int size)
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{
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syslog(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exitting."), size);
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cp_trace();
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exit(1);
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logger(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exitting."), size);
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cp_trace();
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exit(1);
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}
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/* Some functions the less gifted operating systems might lack... */
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#ifndef HAVE_FCLOSEALL
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int fcloseall(void)
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#ifdef HAVE_MINGW
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extern char *identname;
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extern char *program_name;
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extern char **g_argv;
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static SC_HANDLE manager = NULL;
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static SC_HANDLE service = NULL;
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static SERVICE_STATUS status = {0};
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static SERVICE_STATUS_HANDLE statushandle = 0;
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bool install_service(void) {
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char command[4096] = "\"";
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char **argp;
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bool space;
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SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
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manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
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if(!manager) {
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logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
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return false;
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}
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if(!strchr(program_name, '\\')) {
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GetCurrentDirectory(sizeof(command) - 1, command + 1);
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strncat(command, "\\", sizeof(command));
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}
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strncat(command, program_name, sizeof(command));
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strncat(command, "\"", sizeof(command));
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for(argp = g_argv + 1; *argp; argp++) {
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space = strchr(*argp, ' ');
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strncat(command, " ", sizeof(command));
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if(space)
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strncat(command, "\"", sizeof(command));
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strncat(command, *argp, sizeof(command));
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if(space)
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strncat(command, "\"", sizeof(command));
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}
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service = CreateService(manager, identname, identname,
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SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
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command, NULL, NULL, NULL, NULL, NULL);
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if(!service) {
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logger(LOG_ERR, _("Could not create %s service: %s"), identname, winerror(GetLastError()));
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return false;
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}
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ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
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logger(LOG_INFO, _("%s service installed"), identname);
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if(!StartService(service, 0, NULL))
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logger(LOG_WARNING, _("Could not start %s service: %s"), identname, winerror(GetLastError()));
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else
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logger(LOG_INFO, _("%s service started"), identname);
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return true;
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}
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bool remove_service(void) {
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manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
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if(!manager) {
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logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
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return false;
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}
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service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
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if(!service) {
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logger(LOG_ERR, _("Could not open %s service: %s"), identname, winerror(GetLastError()));
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return false;
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}
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if(!ControlService(service, SERVICE_CONTROL_STOP, &status))
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logger(LOG_ERR, _("Could not stop %s service: %s"), identname, winerror(GetLastError()));
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else
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logger(LOG_INFO, _("%s service stopped"), identname);
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if(!DeleteService(service)) {
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logger(LOG_ERR, _("Could not remove %s service: %s"), identname, winerror(GetLastError()));
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return false;
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}
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logger(LOG_INFO, _("%s service removed"), identname);
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return true;
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}
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DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
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switch(request) {
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case SERVICE_CONTROL_STOP:
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logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_STOP");
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break;
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case SERVICE_CONTROL_SHUTDOWN:
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logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_SHUTDOWN");
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break;
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default:
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logger(LOG_WARNING, _("Got unexpected request %d"), request);
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return ERROR_CALL_NOT_IMPLEMENTED;
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}
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if(running) {
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running = false;
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status.dwWaitHint = 30000;
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status.dwCurrentState = SERVICE_STOP_PENDING;
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SetServiceStatus(statushandle, &status);
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return NO_ERROR;
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} else {
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status.dwWaitHint = 0;
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status.dwCurrentState = SERVICE_STOPPED;
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SetServiceStatus(statushandle, &status);
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exit(1);
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}
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}
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VOID WINAPI run_service(DWORD argc, LPTSTR* argv)
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{
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fflush(stdin);
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fflush(stdout);
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fflush(stderr);
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fclose(stdin);
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fclose(stdout);
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fclose(stderr);
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return 0;
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int err = 1;
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extern int main2(int argc, char **argv);
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status.dwServiceType = SERVICE_WIN32;
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status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
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status.dwWin32ExitCode = 0;
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status.dwServiceSpecificExitCode = 0;
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status.dwCheckPoint = 0;
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statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
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if (!statushandle) {
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logger(LOG_ERR, _("System call `%s' failed: %s"), "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
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err = 1;
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} else {
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status.dwWaitHint = 30000;
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status.dwCurrentState = SERVICE_START_PENDING;
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SetServiceStatus(statushandle, &status);
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status.dwWaitHint = 0;
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status.dwCurrentState = SERVICE_RUNNING;
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SetServiceStatus(statushandle, &status);
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err = main2(argc, argv);
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status.dwWaitHint = 0;
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status.dwCurrentState = SERVICE_STOPPED;
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//status.dwWin32ExitCode = err;
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SetServiceStatus(statushandle, &status);
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}
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return;
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}
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bool init_service(void) {
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SERVICE_TABLE_ENTRY services[] = {
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{identname, run_service},
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{NULL, NULL}
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};
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if(!StartServiceCtrlDispatcher(services)) {
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if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
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return false;
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}
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else
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logger(LOG_ERR, _("System call `%s' failed: %s"), "StartServiceCtrlDispatcher", winerror(GetLastError()));
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}
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return true;
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}
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#endif
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#ifndef HAVE_MINGW
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/*
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check for an existing tinc for this net, and write pid to pidfile
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*/
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static bool write_pidfile(void)
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{
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pid_t pid;
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cp();
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pid = check_pid(pidfilename);
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if(pid) {
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if(netname)
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fprintf(stderr, _("A tincd is already running for net `%s' with pid %ld.\n"),
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netname, (long)pid);
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else
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fprintf(stderr, _("A tincd is already running with pid %ld.\n"), (long)pid);
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return false;
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}
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/* if it's locked, write-protected, or whatever */
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if(!write_pid(pidfilename)) {
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fprintf(stderr, _("Could write pid file %s: %s\n"), pidfilename, strerror(errno));
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return false;
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}
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return true;
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}
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#endif
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/*
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Close network connections, and terminate neatly
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*/
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void cleanup_and_exit(int c)
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{
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cp
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close_network_connections();
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if(debug_lvl > DEBUG_NOTHING)
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dump_device_stats();
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syslog(LOG_NOTICE, _("Terminating"));
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closelog();
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exit(c);
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}
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/*
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check for an existing tinc for this net, and write pid to pidfile
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*/
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int write_pidfile(void)
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{
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int pid;
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cp
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if((pid = check_pid(pidfilename)))
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{
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if(netname)
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fprintf(stderr, _("A tincd is already running for net `%s' with pid %d.\n"),
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netname, pid);
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else
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fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid);
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return 1;
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}
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/* if it's locked, write-protected, or whatever */
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if(!write_pid(pidfilename))
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return 1;
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cp
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return 0;
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}
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/*
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kill older tincd for this net
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*/
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int kill_other(int signal)
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bool kill_other(int signal)
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{
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int pid;
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cp
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if(!(pid = read_pid(pidfilename)))
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{
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if(netname)
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fprintf(stderr, _("No other tincd is running for net `%s'.\n"), netname);
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else
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fprintf(stderr, _("No other tincd is running.\n"));
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return 1;
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}
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#ifndef HAVE_MINGW
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pid_t pid;
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errno = 0; /* No error, sometimes errno is only changed on error */
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/* ESRCH is returned when no process with that pid is found */
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if(kill(pid, signal) && errno == ESRCH)
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{
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if(netname)
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fprintf(stderr, _("The tincd for net `%s' is no longer running. "), netname);
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else
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fprintf(stderr, _("The tincd is no longer running. "));
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cp();
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fprintf(stderr, _("Removing stale lock file.\n"));
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remove_pid(pidfilename);
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}
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cp
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return 0;
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pid = read_pid(pidfilename);
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if(!pid) {
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if(netname)
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fprintf(stderr, _("No other tincd is running for net `%s'.\n"),
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netname);
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else
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fprintf(stderr, _("No other tincd is running.\n"));
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return false;
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}
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errno = 0; /* No error, sometimes errno is only changed on error */
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/* ESRCH is returned when no process with that pid is found */
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if(kill(pid, signal) && errno == ESRCH) {
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if(netname)
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fprintf(stderr, _("The tincd for net `%s' is no longer running. "),
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netname);
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else
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fprintf(stderr, _("The tincd is no longer running. "));
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fprintf(stderr, _("Removing stale lock file.\n"));
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remove_pid(pidfilename);
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}
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return true;
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#else
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return remove_service();
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#endif
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}
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/*
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Detach from current terminal, write pidfile, kill parent
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*/
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int detach(void)
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bool detach(void)
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{
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cp
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setup_signals();
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cp();
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/* First check if we can open a fresh new pidfile */
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if(write_pidfile())
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return -1;
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setup_signals();
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/* If we succeeded in doing that, detach */
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/* First check if we can open a fresh new pidfile */
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closelog();
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#ifndef HAVE_MINGW
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if(!write_pidfile())
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return false;
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if(do_detach)
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{
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if(daemon(0, 0) < 0)
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{
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fprintf(stderr, _("Couldn't detach from terminal: %s"), strerror(errno));
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return -1;
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}
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/* If we succeeded in doing that, detach */
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/* Now UPDATE the pid in the pidfile, because we changed it... */
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if(!write_pid(pidfilename))
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return -1;
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}
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openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
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if(debug_lvl > DEBUG_NOTHING)
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syslog(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
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VERSION, __DATE__, __TIME__, debug_lvl);
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else
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syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
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xalloc_fail_func = memory_full;
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cp
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return 0;
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}
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|
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/*
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Execute the program name, with sane environment. All output will be
|
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redirected to syslog.
|
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*/
|
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void _execute_script(const char *scriptname) __attribute__ ((noreturn));
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void _execute_script(const char *scriptname)
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||||
{
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char *s;
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cp
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#ifdef HAVE_UNSETENV
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||||
unsetenv("NETNAME");
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unsetenv("DEVICE");
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unsetenv("INTERFACE");
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closelogger();
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#endif
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if(netname)
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{
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asprintf(&s, "NETNAME=%s", netname);
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putenv(s); /* Don't free s! see man 3 putenv */
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}
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if(do_detach) {
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#ifndef HAVE_MINGW
|
||||
if(daemon(0, 0)) {
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fprintf(stderr, _("Couldn't detach from terminal: %s"),
|
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strerror(errno));
|
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return false;
|
||||
}
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||||
|
||||
if(device)
|
||||
{
|
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asprintf(&s, "DEVICE=%s", device);
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putenv(s); /* Don't free s! see man 3 putenv */
|
||||
}
|
||||
/* Now UPDATE the pid in the pidfile, because we changed it... */
|
||||
|
||||
if(interface)
|
||||
{
|
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asprintf(&s, "INTERFACE=%s", interface);
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putenv(s); /* Don't free s! see man 3 putenv */
|
||||
}
|
||||
if(!write_pid(pidfilename)) {
|
||||
fprintf(stderr, _("Could not write pid file %s: %s\n"), pidfilename, strerror(errno));
|
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return false;
|
||||
}
|
||||
#else
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if(!statushandle)
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exit(install_service());
|
||||
#endif
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||||
}
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chdir("/");
|
||||
|
||||
/* Close all file descriptors */
|
||||
closelog(); /* <- this means we cannot use syslog() here anymore! */
|
||||
fcloseall();
|
||||
openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
|
||||
|
||||
execl(scriptname, NULL);
|
||||
/* No return on success */
|
||||
|
||||
if(errno != ENOENT) /* Ignore if the file does not exist */
|
||||
exit(1); /* Some error while trying execl(). */
|
||||
else
|
||||
exit(0);
|
||||
logger(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
|
||||
VERSION, __DATE__, __TIME__, debug_level);
|
||||
|
||||
xalloc_fail_func = memory_full;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/*
|
||||
Fork and execute the program pointed to by name.
|
||||
*/
|
||||
int execute_script(const char *name)
|
||||
bool execute_script(const char *name, char **envp)
|
||||
{
|
||||
pid_t pid;
|
||||
int status;
|
||||
struct stat s;
|
||||
char *scriptname;
|
||||
cp
|
||||
asprintf(&scriptname, "%s/%s", confbase, name);
|
||||
#ifdef HAVE_SYSTEM
|
||||
int status, len;
|
||||
struct stat s;
|
||||
char *scriptname, *p;
|
||||
int i;
|
||||
|
||||
/* First check if there is a script */
|
||||
cp();
|
||||
|
||||
if(stat(scriptname, &s))
|
||||
return 0;
|
||||
#ifndef HAVE_MINGW
|
||||
len = asprintf(&scriptname, "\"%s/%s\"", confbase, name);
|
||||
#else
|
||||
len = asprintf(&scriptname, "\"%s/%s.bat\"", confbase, name);
|
||||
#endif
|
||||
if(len < 0)
|
||||
return false;
|
||||
|
||||
if((pid = fork()) < 0)
|
||||
{
|
||||
syslog(LOG_ERR, _("System call `%s' failed: %s"), "fork", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
scriptname[len - 1] = '\0';
|
||||
|
||||
if(pid)
|
||||
{
|
||||
if(debug_lvl >= DEBUG_STATUS)
|
||||
syslog(LOG_INFO, _("Executing script %s"), name);
|
||||
/* First check if there is a script */
|
||||
|
||||
free(scriptname);
|
||||
if(stat(scriptname + 1, &s))
|
||||
return true;
|
||||
|
||||
if(waitpid(pid, &status, 0) == pid)
|
||||
{
|
||||
if(WIFEXITED(status)) /* Child exited by itself */
|
||||
{
|
||||
if(WEXITSTATUS(status))
|
||||
{
|
||||
syslog(LOG_ERR, _("Process %d (%s) exited with non-zero status %d"), pid, name, WEXITSTATUS(status));
|
||||
return -1;
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
else if(WIFSIGNALED(status)) /* Child was killed by a signal */
|
||||
{
|
||||
syslog(LOG_ERR, _("Process %d (%s) was killed by signal %d (%s)"),
|
||||
pid, name, WTERMSIG(status), strsignal(WTERMSIG(status)));
|
||||
return -1;
|
||||
}
|
||||
else /* Something strange happened */
|
||||
{
|
||||
syslog(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid, name);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
syslog(LOG_ERR, _("System call `%s' failed: %s"), "waitpid", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
cp
|
||||
/* Child here */
|
||||
ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
|
||||
|
||||
_execute_script(scriptname);
|
||||
#ifdef HAVE_PUTENV
|
||||
/* Set environment */
|
||||
|
||||
for(i = 0; envp[i]; i++)
|
||||
putenv(envp[i]);
|
||||
#endif
|
||||
|
||||
scriptname[len - 1] = '\"';
|
||||
status = system(scriptname);
|
||||
|
||||
free(scriptname);
|
||||
|
||||
/* Unset environment */
|
||||
|
||||
for(i = 0; envp[i]; i++) {
|
||||
char *e = strchr(envp[i], '=');
|
||||
if(e) {
|
||||
p = alloca(e - envp[i] + 1);
|
||||
strncpy(p, envp[i], e - envp[i]);
|
||||
p[e - envp[i]] = '\0';
|
||||
putenv(p);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef WEXITSTATUS
|
||||
if(status != -1) {
|
||||
if(WIFEXITED(status)) { /* Child exited by itself */
|
||||
if(WEXITSTATUS(status)) {
|
||||
logger(LOG_ERR, _("Script %s exited with non-zero status %d"),
|
||||
name, WEXITSTATUS(status));
|
||||
return false;
|
||||
}
|
||||
} else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
|
||||
logger(LOG_ERR, _("Script %s was killed by signal %d (%s)"),
|
||||
name, WTERMSIG(status), strsignal(WTERMSIG(status)));
|
||||
return false;
|
||||
} else { /* Something strange happened */
|
||||
logger(LOG_ERR, _("Script %s terminated abnormally"), name);
|
||||
return false;
|
||||
}
|
||||
} else {
|
||||
logger(LOG_ERR, _("System call `%s' failed: %s"), "system", strerror(errno));
|
||||
return false;
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -322,186 +438,170 @@ cp
|
|||
Signal handlers.
|
||||
*/
|
||||
|
||||
RETSIGTYPE
|
||||
sigterm_handler(int a)
|
||||
#ifndef HAVE_MINGW
|
||||
static RETSIGTYPE sigterm_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got TERM signal"));
|
||||
|
||||
cleanup_and_exit(0);
|
||||
logger(LOG_NOTICE, _("Got %s signal"), "TERM");
|
||||
if(running)
|
||||
running = false;
|
||||
else
|
||||
exit(1);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigquit_handler(int a)
|
||||
static RETSIGTYPE sigquit_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got QUIT signal"));
|
||||
cleanup_and_exit(0);
|
||||
logger(LOG_NOTICE, _("Got %s signal"), "QUIT");
|
||||
if(running)
|
||||
running = false;
|
||||
else
|
||||
exit(1);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
fatal_signal_square(int a)
|
||||
static RETSIGTYPE fatal_signal_square(int a)
|
||||
{
|
||||
syslog(LOG_ERR, _("Got another fatal signal %d (%s): not restarting."), a, strsignal(a));
|
||||
cp_trace();
|
||||
exit(1);
|
||||
logger(LOG_ERR, _("Got another fatal signal %d (%s): not restarting."), a,
|
||||
strsignal(a));
|
||||
cp_trace();
|
||||
exit(1);
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
fatal_signal_handler(int a)
|
||||
static RETSIGTYPE fatal_signal_handler(int a)
|
||||
{
|
||||
struct sigaction act;
|
||||
syslog(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a));
|
||||
cp_trace();
|
||||
struct sigaction act;
|
||||
logger(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a));
|
||||
cp_trace();
|
||||
|
||||
if(do_detach)
|
||||
{
|
||||
syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
|
||||
if(do_detach) {
|
||||
logger(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
|
||||
|
||||
act.sa_handler = fatal_signal_square;
|
||||
act.sa_mask = emptysigset;
|
||||
act.sa_flags = 0;
|
||||
sigaction(SIGSEGV, &act, NULL);
|
||||
act.sa_handler = fatal_signal_square;
|
||||
act.sa_mask = emptysigset;
|
||||
act.sa_flags = 0;
|
||||
sigaction(SIGSEGV, &act, NULL);
|
||||
|
||||
close_network_connections();
|
||||
sleep(5);
|
||||
remove_pid(pidfilename);
|
||||
execvp(g_argv[0], g_argv);
|
||||
}
|
||||
else
|
||||
{
|
||||
syslog(LOG_NOTICE, _("Not restarting."));
|
||||
exit(1);
|
||||
}
|
||||
close_network_connections();
|
||||
sleep(5);
|
||||
remove_pid(pidfilename);
|
||||
execvp(g_argv[0], g_argv);
|
||||
} else {
|
||||
logger(LOG_NOTICE, _("Not restarting."));
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sighup_handler(int a)
|
||||
static RETSIGTYPE sighup_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got HUP signal"));
|
||||
sighup = 1;
|
||||
logger(LOG_NOTICE, _("Got %s signal"), "HUP");
|
||||
sighup = true;
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigint_handler(int a)
|
||||
static RETSIGTYPE sigint_handler(int a)
|
||||
{
|
||||
if(saved_debug_lvl)
|
||||
{
|
||||
syslog(LOG_NOTICE, _("Reverting to old debug level (%d)"),
|
||||
saved_debug_lvl);
|
||||
debug_lvl = saved_debug_lvl;
|
||||
saved_debug_lvl = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
syslog(LOG_NOTICE, _("Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d."),
|
||||
debug_lvl);
|
||||
saved_debug_lvl = debug_lvl;
|
||||
debug_lvl = 5;
|
||||
}
|
||||
logger(LOG_NOTICE, _("Got %s signal"), "INT");
|
||||
|
||||
if(saved_debug_level != -1) {
|
||||
logger(LOG_NOTICE, _("Reverting to old debug level (%d)"),
|
||||
saved_debug_level);
|
||||
debug_level = saved_debug_level;
|
||||
saved_debug_level = -1;
|
||||
} else {
|
||||
logger(LOG_NOTICE,
|
||||
_("Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d."),
|
||||
debug_level);
|
||||
saved_debug_level = debug_level;
|
||||
debug_level = 5;
|
||||
}
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigalrm_handler(int a)
|
||||
static RETSIGTYPE sigalrm_handler(int a)
|
||||
{
|
||||
if(debug_lvl > DEBUG_NOTHING)
|
||||
syslog(LOG_NOTICE, _("Got ALRM signal"));
|
||||
sigalrm = 1;
|
||||
logger(LOG_NOTICE, _("Got %s signal"), "ALRM");
|
||||
sigalrm = true;
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigusr1_handler(int a)
|
||||
static RETSIGTYPE sigusr1_handler(int a)
|
||||
{
|
||||
dump_connections();
|
||||
dump_connections();
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigusr2_handler(int a)
|
||||
static RETSIGTYPE sigusr2_handler(int a)
|
||||
{
|
||||
dump_device_stats();
|
||||
dump_nodes();
|
||||
dump_edges();
|
||||
dump_subnets();
|
||||
dump_device_stats();
|
||||
dump_nodes();
|
||||
dump_edges();
|
||||
dump_subnets();
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
sigwinch_handler(int a)
|
||||
static RETSIGTYPE sigwinch_handler(int a)
|
||||
{
|
||||
extern int do_purge;
|
||||
do_purge = 1;
|
||||
do_purge = true;
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
unexpected_signal_handler(int a)
|
||||
static RETSIGTYPE unexpected_signal_handler(int a)
|
||||
{
|
||||
syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
|
||||
cp_trace();
|
||||
logger(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
|
||||
cp_trace();
|
||||
}
|
||||
|
||||
RETSIGTYPE
|
||||
ignore_signal_handler(int a)
|
||||
static RETSIGTYPE ignore_signal_handler(int a)
|
||||
{
|
||||
if(debug_lvl >= DEBUG_SCARY_THINGS)
|
||||
{
|
||||
syslog(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a));
|
||||
cp_trace();
|
||||
}
|
||||
ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a));
|
||||
}
|
||||
|
||||
struct {
|
||||
int signal;
|
||||
void (*handler)(int);
|
||||
static struct {
|
||||
int signal;
|
||||
void (*handler)(int);
|
||||
} sighandlers[] = {
|
||||
{ SIGHUP, sighup_handler },
|
||||
{ SIGTERM, sigterm_handler },
|
||||
{ SIGQUIT, sigquit_handler },
|
||||
{ SIGSEGV, fatal_signal_handler },
|
||||
{ SIGBUS, fatal_signal_handler },
|
||||
{ SIGILL, fatal_signal_handler },
|
||||
{ SIGPIPE, ignore_signal_handler },
|
||||
{ SIGINT, sigint_handler },
|
||||
{ SIGUSR1, sigusr1_handler },
|
||||
{ SIGUSR2, sigusr2_handler },
|
||||
{ SIGCHLD, ignore_signal_handler },
|
||||
{ SIGALRM, sigalrm_handler },
|
||||
{ SIGWINCH, sigwinch_handler },
|
||||
{ 0, NULL }
|
||||
{SIGHUP, sighup_handler},
|
||||
{SIGTERM, sigterm_handler},
|
||||
{SIGQUIT, sigquit_handler},
|
||||
{SIGSEGV, fatal_signal_handler},
|
||||
{SIGBUS, fatal_signal_handler},
|
||||
{SIGILL, fatal_signal_handler},
|
||||
{SIGPIPE, ignore_signal_handler},
|
||||
{SIGINT, sigint_handler},
|
||||
{SIGUSR1, sigusr1_handler},
|
||||
{SIGUSR2, sigusr2_handler},
|
||||
{SIGCHLD, ignore_signal_handler},
|
||||
{SIGALRM, sigalrm_handler},
|
||||
{SIGWINCH, sigwinch_handler},
|
||||
{0, NULL}
|
||||
};
|
||||
#endif
|
||||
|
||||
void
|
||||
setup_signals(void)
|
||||
void setup_signals(void)
|
||||
{
|
||||
int i;
|
||||
struct sigaction act;
|
||||
#ifndef HAVE_MINGW
|
||||
int i;
|
||||
struct sigaction act;
|
||||
|
||||
sigemptyset(&emptysigset);
|
||||
act.sa_handler = NULL;
|
||||
act.sa_mask = emptysigset;
|
||||
act.sa_flags = 0;
|
||||
sigemptyset(&emptysigset);
|
||||
act.sa_handler = NULL;
|
||||
act.sa_mask = emptysigset;
|
||||
act.sa_flags = 0;
|
||||
|
||||
/* Set a default signal handler for every signal, errors will be
|
||||
ignored. */
|
||||
for(i = 0; i < NSIG; i++)
|
||||
{
|
||||
if(!do_detach)
|
||||
act.sa_handler = SIG_DFL;
|
||||
else
|
||||
act.sa_handler = unexpected_signal_handler;
|
||||
sigaction(i, &act, NULL);
|
||||
}
|
||||
/* Set a default signal handler for every signal, errors will be
|
||||
ignored. */
|
||||
for(i = 0; i < NSIG; i++) {
|
||||
if(!do_detach)
|
||||
act.sa_handler = SIG_DFL;
|
||||
else
|
||||
act.sa_handler = unexpected_signal_handler;
|
||||
sigaction(i, &act, NULL);
|
||||
}
|
||||
|
||||
/* If we didn't detach, allow coredumps */
|
||||
if(!do_detach)
|
||||
sighandlers[3].handler = SIG_DFL;
|
||||
/* If we didn't detach, allow coredumps */
|
||||
if(!do_detach)
|
||||
sighandlers[3].handler = SIG_DFL;
|
||||
|
||||
/* Then, for each known signal that we want to catch, assign a
|
||||
handler to the signal, with error checking this time. */
|
||||
for(i = 0; sighandlers[i].signal; i++)
|
||||
{
|
||||
act.sa_handler = sighandlers[i].handler;
|
||||
if(sigaction(sighandlers[i].signal, &act, NULL) < 0)
|
||||
fprintf(stderr, _("Installing signal handler for signal %d (%s) failed: %s\n"),
|
||||
sighandlers[i].signal, strsignal(sighandlers[i].signal), strerror(errno));
|
||||
}
|
||||
/* Then, for each known signal that we want to catch, assign a
|
||||
handler to the signal, with error checking this time. */
|
||||
for(i = 0; sighandlers[i].signal; i++) {
|
||||
act.sa_handler = sighandlers[i].handler;
|
||||
if(sigaction(sighandlers[i].signal, &act, NULL) < 0)
|
||||
fprintf(stderr, _("Installing signal handler for signal %d (%s) failed: %s\n"),
|
||||
sighandlers[i].signal, strsignal(sighandlers[i].signal),
|
||||
strerror(errno));
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue