/*
tincd.c -- the main file for tincd
- Copyright (C) 1998,99 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 1998-2005 Ivo Timmermans
+ 2000-2010 Guus Sliepen <guus@tinc-vpn.org>
+ 2008 Max Rijevski <maksuf@gmail.com>
+ 2009 Michael Tokarev <mjt@tls.msk.ru>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "config.h"
+#include "system.h"
-#include <errno.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <signal.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <syslog.h>
-#include <unistd.h>
-
-#ifdef HAVE_SYS_IOCTL_H
-# include <sys/ioctl.h>
+/* Darwin (MacOS/X) needs the following definition... */
+#ifndef _P1003_1B_VISIBLE
+#define _P1003_1B_VISIBLE
+#endif
+
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
#endif
-#include <pidfile.h>
-#include <utils.h>
-#include <xalloc.h>
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/pem.h>
+#include <openssl/evp.h>
+#include <openssl/engine.h>
+
+#ifdef HAVE_LZO
+#include LZO1X_H
+#endif
+
+#ifndef HAVE_MINGW
+#include <pwd.h>
+#include <grp.h>
+#include <time.h>
+#endif
+
+#include <getopt.h>
#include "conf.h"
-#include "encr.h"
+#include "control.h"
+#include "crypto.h"
+#include "device.h"
+#include "logger.h"
#include "net.h"
#include "netutl.h"
+#include "process.h"
+#include "protocol.h"
+#include "utils.h"
+#include "xalloc.h"
/* The name this program was run with. */
-char *program_name;
+char *program_name = NULL;
/* If nonzero, display usage information and exit. */
-static int show_help;
+bool show_help = false;
/* If nonzero, print the version on standard output and exit. */
-static int show_version;
-
-/* If nonzero, it will attempt to kill a running tincd and exit. */
-static int kill_tincd = 0;
-
-char *confbase = NULL; /* directory in which all config files are */
-char *configfilename = NULL; /* configuration file name */
-char *identname; /* program name for syslog */
-char *netname = NULL; /* name of the vpn network */
-char *pidfilename; /* pid file location */
-static pid_t ppid; /* pid of non-detached part */
-char **g_argv; /* a copy of the cmdline arguments */
-
-void cleanup_and_exit(int);
-int detach(void);
-int kill_other(void);
-void make_names(void);
-RETSIGTYPE parent_exit(int a);
-void setup_signals(void);
-int write_pidfile(void);
-
-static struct option const long_options[] =
-{
- { "kill", no_argument, NULL, 'k' },
- { "net", required_argument, NULL, 'n' },
- { "timeout", required_argument, NULL, 'p' },
- { "help", no_argument, &show_help, 1 },
- { "version", no_argument, &show_version, 1 },
- { NULL, 0, NULL, 0 }
+bool show_version = false;
+
+/* If nonzero, use null ciphers and skip all key exchanges. */
+bool bypass_security = false;
+
+/* If nonzero, disable swapping for this process. */
+bool do_mlock = false;
+
+/* If nonzero, chroot to netdir after startup. */
+static bool do_chroot = false;
+
+/* If !NULL, do setuid to given user after startup */
+static const char *switchuser = NULL;
+
+/* If nonzero, write log entries to a separate file. */
+bool use_logfile = false;
+
+char *identname = NULL; /* program name for syslog */
+char *logfilename = NULL; /* log file location */
+char *controlcookiename = NULL;
+char **g_argv; /* a copy of the cmdline arguments */
+
+static int status;
+
+static struct option const long_options[] = {
+ {"config", required_argument, NULL, 'c'},
+ {"net", required_argument, NULL, 'n'},
+ {"help", no_argument, NULL, 1},
+ {"version", no_argument, NULL, 2},
+ {"no-detach", no_argument, NULL, 'D'},
+ {"debug", optional_argument, NULL, 'd'},
+ {"bypass-security", no_argument, NULL, 3},
+ {"mlock", no_argument, NULL, 'L'},
+ {"chroot", no_argument, NULL, 'R'},
+ {"user", required_argument, NULL, 'U'},
+ {"logfile", optional_argument, NULL, 4},
+ {"controlcookie", required_argument, NULL, 5},
+ {NULL, 0, NULL, 0}
};
-static void
-usage(int status)
-{
- if(status != 0)
- fprintf(stderr, "Try `%s --help\' for more information.\n", program_name);
- else
- {
- printf("Usage: %s [option]...\n\n", program_name);
- printf(" -c, --config=FILE Read configuration options from FILE.\n"
- " -d Increase debug level.\n"
- " -k, --kill Attempt to kill a running tincd and exit.\n"
- " -n, --net=NETNAME Connect to net NETNAME.\n"
- " -t, --timeout=TIMEOUT Seconds to wait before giving a timeout.\n");
- printf(" --help Display this help and exit.\n"
- " --version Output version information and exit.\n\n");
- printf("Report bugs to zarq@iname.com.\n");
- }
- exit(status);
-}
+#ifdef HAVE_MINGW
+static struct WSAData wsa_state;
+CRITICAL_SECTION mutex;
+#endif
-void
-parse_options(int argc, char **argv, char **envp)
-{
- int r;
- int option_index = 0;
- config_t *p;
-
- while((r = getopt_long(argc, argv, "c:dkn:t:", long_options, &option_index)) != EOF)
- {
- switch(r)
- {
- case 0: /* long option */
- break;
- case 'c': /* config file */
- configfilename = xmalloc(strlen(optarg)+1);
- strcpy(configfilename, optarg);
- break;
- case 'd': /* inc debug level */
- debug_lvl++;
- break;
- case 'k': /* kill old tincds */
- kill_tincd = 1;
- break;
- case 'n': /* net name given */
- netname = xmalloc(strlen(optarg)+1);
- strcpy(netname, optarg);
- break;
- case 't': /* timeout */
- if(!(p = add_config_val(&config, TYPE_INT, optarg)))
- {
- printf("Invalid timeout value `%s'.\n", optarg);
- usage(1);
- }
- break;
- case '?':
- usage(1);
- default:
- break;
- }
- }
+static void usage(bool status) {
+ if(status)
+ fprintf(stderr, "Try `%s --help\' for more information.\n",
+ program_name);
+ else {
+ printf("Usage: %s [option]...\n\n", program_name);
+ printf( " -c, --config=DIR Read configuration options from DIR.\n"
+ " -D, --no-detach Don't fork and detach.\n"
+ " -d, --debug[=LEVEL] Increase debug level or set it to LEVEL.\n"
+ " -n, --net=NETNAME Connect to net NETNAME.\n"
+ " -L, --mlock Lock tinc into main memory.\n"
+ " --logfile[=FILENAME] Write log entries to a logfile.\n"
+ " --controlcookie=FILENAME Write control socket cookie to FILENAME.\n"
+ " --bypass-security Disables meta protocol security, for debugging.\n"
+ " -R, --chroot chroot to NET dir at startup.\n"
+ " -U, --user=USER setuid to given USER at startup.\n" " --help Display this help and exit.\n"
+ " --version Output version information and exit.\n\n");
+ printf("Report bugs to tinc@tinc-vpn.org.\n");
+ }
}
-void memory_full(void)
-{
- syslog(LOG_ERR, "Memory exhausted; exiting.");
- exit(1);
+static bool parse_options(int argc, char **argv) {
+ int r;
+ int option_index = 0;
+
+ while((r = getopt_long(argc, argv, "c:DLd::n:RU:", long_options, &option_index)) != EOF) {
+ switch (r) {
+ case 0: /* long option */
+ break;
+
+ case 'c': /* config file */
+ confbase = xstrdup(optarg);
+ break;
+
+ case 'D': /* no detach */
+ do_detach = false;
+ break;
+
+ case 'L': /* no detach */
+#ifndef HAVE_MLOCKALL
+ logger(LOG_ERR, "%s not supported on this platform", "mlockall()");
+ return false;
+#else
+ do_mlock = true;
+ break;
+#endif
+
+ case 'd': /* inc debug level */
+ if(optarg)
+ debug_level = atoi(optarg);
+ else
+ debug_level++;
+ break;
+
+ case 'n': /* net name given */
+ netname = xstrdup(optarg);
+ break;
+
+ case 'R': /* chroot to NETNAME dir */
+ do_chroot = true;
+ break;
+
+ case 'U': /* setuid to USER */
+ switchuser = optarg;
+ break;
+
+ case 1: /* show help */
+ show_help = true;
+ break;
+
+ case 2: /* show version */
+ show_version = true;
+ break;
+
+ case 3: /* bypass security */
+ bypass_security = true;
+ break;
+
+ case 4: /* write log entries to a file */
+ use_logfile = true;
+ if(optarg)
+ logfilename = xstrdup(optarg);
+ break;
+
+ case 5: /* open control socket here */
+ controlcookiename = xstrdup(optarg);
+ break;
+
+ case '?':
+ usage(true);
+ return false;
+
+ default:
+ break;
+ }
+ }
+
+ return true;
}
/*
- Detach from current terminal, write pidfile, kill parent
+ Set all files and paths according to netname
*/
-int detach(void)
-{
- int fd;
- pid_t pid;
-
- ppid = getpid();
- if((pid = fork()) < 0)
- {
- perror("fork");
- return -1;
- }
- if(pid) /* parent process */
- {
- signal(SIGTERM, parent_exit);
- sleep(600); /* wait 10 minutes */
- exit(1);
- }
-
- if(write_pidfile())
- return -1;
-
- if((fd = open("/dev/tty", O_RDWR)) >= 0)
- {
- if(ioctl(fd, TIOCNOTTY, NULL))
- {
- perror("ioctl");
- return -1;
- }
- close(fd);
- }
+static void make_names(void) {
+#ifdef HAVE_MINGW
+ HKEY key;
+ char installdir[1024] = "";
+ long len = sizeof installdir;
+#endif
- if(setsid() < 0)
- return -1;
+ if(netname)
+ xasprintf(&identname, "tinc.%s", netname);
+ else
+ identname = xstrdup("tinc");
+
+#ifdef HAVE_MINGW
+ if(!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\tinc", 0, KEY_READ, &key)) {
+ if(!RegQueryValueEx(key, NULL, 0, 0, installdir, &len)) {
+ if(!logfilename)
+ xasprintf(&logfilename, "%s/log/%s.log", identname);
+ if(!confbase) {
+ if(netname)
+ xasprintf(&confbase, "%s/%s", installdir, netname);
+ else
+ xasprintf(&confbase, "%s", installdir);
+ }
+ if(!controlcookiename)
+ xasprintf(&controlcookiename, "%s/cookie", confbase);
+ }
+ RegCloseKey(key);
+ if(*installdir)
+ return;
+ }
+#endif
- kill(ppid, SIGTERM);
-
- chdir("/"); /* avoid keeping a mointpoint busy */
+ if(!logfilename)
+ xasprintf(&logfilename, LOCALSTATEDIR "/log/%s.log", identname);
- openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
+ if(!controlcookiename)
+ xasprintf(&controlcookiename, LOCALSTATEDIR "/run/%s.cookie", identname);
- if(debug_lvl > 1)
- syslog(LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d.",
- VERSION, __DATE__, __TIME__, debug_lvl);
- else
- syslog(LOG_NOTICE, "tincd %s starting, debug level %d.", VERSION, debug_lvl);
+ if(netname) {
+ if(!confbase)
+ xasprintf(&confbase, CONFDIR "/tinc/%s", netname);
+ else
+ logger(LOG_INFO, "Both netname and configuration directory given, using the latter...");
+ } else {
+ if(!confbase)
+ xasprintf(&confbase, CONFDIR "/tinc");
+ }
+}
- xalloc_fail_func = memory_full;
+static void free_names() {
+ if (identname) free(identname);
+ if (netname) free(netname);
+ if (controlcookiename) free(controlcookiename);
+ if (logfilename) free(logfilename);
+ if (confbase) free(confbase);
+}
- return 0;
+static bool drop_privs() {
+#ifdef HAVE_MINGW
+ if (switchuser) {
+ logger(LOG_ERR, "%s not supported on this platform", "-U");
+ return false;
+ }
+ if (do_chroot) {
+ logger(LOG_ERR, "%s not supported on this platform", "-R");
+ return false;
+ }
+#else
+ uid_t uid = 0;
+ if (switchuser) {
+ struct passwd *pw = getpwnam(switchuser);
+ if (!pw) {
+ logger(LOG_ERR, "unknown user `%s'", switchuser);
+ return false;
+ }
+ uid = pw->pw_uid;
+ if (initgroups(switchuser, pw->pw_gid) != 0 ||
+ setgid(pw->pw_gid) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "initgroups", strerror(errno));
+ return false;
+ }
+ endgrent();
+ endpwent();
+ }
+ if (do_chroot) {
+ tzset(); /* for proper timestamps in logs */
+ if (chroot(confbase) != 0 || chdir("/") != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "chroot", strerror(errno));
+ return false;
+ }
+ free(confbase);
+ confbase = xstrdup("");
+ }
+ if (switchuser)
+ if (setuid(uid) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s",
+ "setuid", strerror(errno));
+ return false;
+ }
+#endif
+ return true;
}
-/*
- Close network connections, and terminate neatly
-*/
-void cleanup_and_exit(int c)
-{
- close_network_connections();
+#ifdef HAVE_MINGW
+# define setpriority(level) SetPriorityClass(GetCurrentProcess(), level)
+#else
+# define NORMAL_PRIORITY_CLASS 0
+# define BELOW_NORMAL_PRIORITY_CLASS 10
+# define HIGH_PRIORITY_CLASS -10
+# define setpriority(level) nice(level)
+#endif
- if(debug_lvl > 0)
- syslog(LOG_INFO, "Total bytes written: tap %d, socket %d; bytes read: tap %d, socket %d.",
- total_tap_out, total_socket_out, total_tap_in, total_socket_in);
+int main(int argc, char **argv) {
+ program_name = argv[0];
- closelog();
- kill(ppid, SIGTERM);
- exit(c);
-}
+ if(!parse_options(argc, argv))
+ return 1;
+
+ make_names();
-/*
- check for an existing tinc for this net, and write pid to pidfile
-*/
-int write_pidfile(void)
-{
- int pid;
-
- if((pid = check_pid(pidfilename)))
- {
- if(netname)
- fprintf(stderr, "A tincd is already running for net `%s' with pid %d.\n",
- netname, pid);
- else
- fprintf(stderr, "A tincd is already running with pid %d.\n", pid);
- return 1;
- }
-
- /* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
- return 1;
-
- return 0;
-}
+ if(show_version) {
+ printf("%s version %s (built %s %s, protocol %d)\n", PACKAGE,
+ VERSION, __DATE__, __TIME__, PROT_CURRENT);
+ printf("Copyright (C) 1998-2010 Ivo Timmermans, Guus Sliepen and others.\n"
+ "See the AUTHORS file for a complete list.\n\n"
+ "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
+ "and you are welcome to redistribute it under certain conditions;\n"
+ "see the file COPYING for details.\n");
-/*
- kill older tincd for this net
-*/
-int kill_other(void)
-{
- int pid;
-
- if(!(pid = read_pid(pidfilename)))
- {
- if(netname)
- fprintf(stderr, "No other tincd is running for net `%s'.\n", netname);
- else
- fprintf(stderr, "No other tincd is running.\n");
- return 1;
- }
-
- errno = 0; /* No error, sometimes errno is only changed on error */
- /* ESRCH is returned when no process with that pid is found */
- if(kill(pid, SIGTERM) && errno == ESRCH)
- fprintf(stderr, "Removing stale lock file.\n");
- remove_pid(pidfilename);
-
- return 0;
-}
+ return 0;
+ }
-/*
- Set all files and paths according to netname
-*/
-void make_names(void)
-{
- if(!configfilename)
- {
- if(netname)
- {
- configfilename = xmalloc(strlen(netname)+18+strlen(CONFDIR));
- sprintf(configfilename, "%s/tinc/%s/tincd.conf", CONFDIR, netname);
+ if(show_help) {
+ usage(false);
+ return 0;
}
- else
- {
- configfilename = xmalloc(17+strlen(CONFDIR));
- sprintf(configfilename, "%s/tinc/tincd.conf", CONFDIR);
+
+#ifdef HAVE_MINGW
+ if(WSAStartup(MAKEWORD(2, 2), &wsa_state)) {
+ logger(LOG_ERR, "System call `%s' failed: %s", "WSAStartup", winerror(GetLastError()));
+ return 1;
}
- }
-
- if(netname)
- {
- pidfilename = xmalloc(strlen(netname)+20);
- sprintf(pidfilename, "/var/run/tincd.%s.pid", netname);
- confbase = xmalloc(strlen(netname)+8+strlen(CONFDIR));
- sprintf(confbase, "%s/tinc/%s/", CONFDIR, netname);
- identname = xmalloc(strlen(netname)+7);
- sprintf(identname, "tincd.%s", netname);
- }
- else
- {
- pidfilename = "/var/run/tincd.pid";
- confbase = xmalloc(7+strlen(CONFDIR));
- sprintf(confbase, "%s/tinc/", CONFDIR);
- identname = "tincd";
- }
-}
+#endif
-int
-main(int argc, char **argv, char **envp)
-{
- program_name = argv[0];
+ openlogger("tinc", use_logfile?LOGMODE_FILE:LOGMODE_STDERR);
- parse_options(argc, argv, envp);
+ if(!event_init()) {
+ logger(LOG_ERR, "Error initializing libevent!");
+ return 1;
+ }
+
+ g_argv = argv;
- if(show_version)
- {
- printf("%s version %s\nCopyright (C) 1998,99 Ivo Timmermans and others,\n"
- "see the AUTHORS file for a complete list.\n\n"
- "tinc comes with ABSOLUTELY NO WARRANTY. This is free software,\n"
- "and you are welcome to redistribute it under certain conditions;\n"
- "see the file COPYING for details.\n\n", PACKAGE, VERSION);
- printf("This product includes software developed by Eric Young (eay@mincom.oz.au)\n");
+ init_configuration(&config_tree);
- return 0;
- }
+ /* Slllluuuuuuurrrrp! */
- if(show_help)
- usage(0);
+ srand(time(NULL));
+ crypto_init();
- if(geteuid())
- {
- fprintf(stderr, "You must be root to run this program. sorry.\n");
- return 1;
- }
+ if(!read_server_config())
+ return 1;
- g_argv = argv;
+#ifdef HAVE_LZO
+ if(lzo_init() != LZO_E_OK) {
+ logger(LOG_ERR, "Error initializing LZO compressor!");
+ return 1;
+ }
+#endif
- make_names();
+#ifdef HAVE_MINGW
+ if(!do_detach || !init_service())
+ return main2(argc, argv);
+ else
+ return 1;
+}
- if(kill_tincd)
- exit(kill_other());
+int main2(int argc, char **argv) {
+ InitializeCriticalSection(&mutex);
+ EnterCriticalSection(&mutex);
+#endif
- if(read_config_file(configfilename))
- return 1;
+ if(!detach())
+ return 1;
+
+#ifdef HAVE_MLOCKALL
+ /* Lock all pages into memory if requested.
+ * This has to be done after daemon()/fork() so it works for child.
+ * No need to do that in parent as it's very short-lived. */
+ if(do_mlock && mlockall(MCL_CURRENT | MCL_FUTURE) != 0) {
+ logger(LOG_ERR, "System call `%s' failed: %s", "mlockall",
+ strerror(errno));
+ return 1;
+ }
+#endif
- setup_signals();
+ /* Setup sockets and open device. */
- if(detach())
- exit(0);
+ if(!setup_network())
+ goto end;
- if(security_init())
- return 1;
+ if(!init_control())
+ return 1;
- if(setup_network_connections())
- cleanup_and_exit(1);
+ /* Initiate all outgoing connections. */
- main_loop();
+ try_outgoing_connections();
- cleanup_and_exit(1);
- return 1;
-}
+ /* Change process priority */
-RETSIGTYPE
-sigterm_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got TERM signal");
- cleanup_and_exit(0);
-}
+ char *priority = 0;
-RETSIGTYPE
-sigquit_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got QUIT signal");
- cleanup_and_exit(0);
-}
+ if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
+ if(!strcasecmp(priority, "Normal"))
+ setpriority(NORMAL_PRIORITY_CLASS);
+ else if(!strcasecmp(priority, "Low"))
+ setpriority(BELOW_NORMAL_PRIORITY_CLASS);
+ else if(!strcasecmp(priority, "High"))
+ setpriority(HIGH_PRIORITY_CLASS);
+ else {
+ logger(LOG_ERR, "Invalid priority `%s`!", priority);
+ goto end;
+ }
+ }
-RETSIGTYPE
-sigsegv_square(int a)
-{
- syslog(LOG_NOTICE, "Got another SEGV signal: not restarting");
- exit(0);
-}
+ /* drop privileges */
+ if (!drop_privs())
+ goto end;
-RETSIGTYPE
-sigsegv_handler(int a)
-{
- if(cp_file)
- syslog(LOG_NOTICE, "Got SEGV signal after %s line %d. Trying to re-execute.",
- cp_file, cp_line);
- else
- syslog(LOG_NOTICE, "Got SEGV signal; trying to re-execute.");
+ /* Start main loop. It only exits when tinc is killed. */
- signal(SIGSEGV, sigsegv_square);
+ status = main_loop();
- close_network_connections();
- remove_pid(pidfilename);
- execvp(g_argv[0], g_argv);
-}
+ /* Shutdown properly. */
-RETSIGTYPE
-sighup_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got HUP signal");
- close_network_connections();
- setup_network_connections();
- /* FIXME: read config-file and re-establish network connections */
-}
+ ifdebug(CONNECTIONS)
+ dump_device_stats();
-RETSIGTYPE
-sigint_handler(int a)
-{
- if(debug_lvl > 0)
- syslog(LOG_NOTICE, "Got INT signal");
- cleanup_and_exit(0);
-}
+ close_network_connections();
-RETSIGTYPE
-sigusr1_handler(int a)
-{
- dump_conn_list();
-}
+end:
+ logger(LOG_NOTICE, "Terminating");
-RETSIGTYPE
-sigusr2_handler(int a)
-{
- if(debug_lvl > 1)
- syslog(LOG_NOTICE, "Forcing new keys");
- regenerate_keys();
-}
+ exit_control();
-RETSIGTYPE
-sighuh(int a)
-{
- if(cp_file)
- syslog(LOG_NOTICE, "Got unexpected signal (%d) after %s line %d.",
- a, cp_file, cp_line);
- else
- syslog(LOG_NOTICE, "Got unexpected signal (%d).", a);
-}
+ crypto_exit();
-void
-setup_signals(void)
-{
- int i;
-
- for(i=0;i<32;i++)
- signal(i,sighuh);
-
- if(signal(SIGTERM, SIG_IGN) != SIG_ERR)
- signal(SIGTERM, sigterm_handler);
- if(signal(SIGQUIT, SIG_IGN) != SIG_ERR)
- signal(SIGQUIT, sigquit_handler);
- if(signal(SIGSEGV, SIG_IGN) != SIG_ERR)
- signal(SIGSEGV, sigsegv_handler);
- if(signal(SIGHUP, SIG_IGN) != SIG_ERR)
- signal(SIGHUP, sighup_handler);
- signal(SIGPIPE, SIG_IGN);
- if(signal(SIGINT, SIG_IGN) != SIG_ERR)
- signal(SIGINT, sigint_handler);
- signal(SIGUSR1, sigusr1_handler);
- signal(SIGUSR2, sigusr2_handler);
- signal(SIGCHLD, SIG_IGN);
-}
+ exit_configuration(&config_tree);
+ free_names();
-RETSIGTYPE parent_exit(int a)
-{
- exit(0);
+ return status;
}
-