along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: process.c,v 1.1.2.3 2000/11/17 00:56:49 guus Exp $
+ $Id: process.c,v 1.1.2.12 2000/11/22 22:18:03 guus Exp $
*/
#include "config.h"
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
+#include <stdlib.h>
#include <unistd.h>
+#include <termios.h>
#include <list.h>
#include <pidfile.h>
#include "conf.h"
#include "process.h"
+#include "subnet.h"
+#include "connection.h"
#include "system.h"
/* A list containing all our children */
-list_t *child_pids;
+list_t *child_pids = NULL;
/* If zero, don't detach from the terminal. */
int do_detach = 1;
extern char *pidfilename;
extern char **g_argv;
+void init_processes(void)
+{
+cp
+ child_pids = list_new();
+cp
+}
+
void memory_full(int size)
{
syslog(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exiting."), size);
exit(1);
}
+/* Some functions the less gifted operating systems might lack... */
+
+#ifndef HAVE_FCLOSEALL
+int fcloseall(void)
+{
+ fflush(stdin);
+ fflush(stdout);
+ fflush(stderr);
+ fclose(stdin);
+ fclose(stdout);
+ fclose(stderr);
+}
+#endif
+
+#ifndef HAVE_DAEMON
+int daemon(int nochdir, int noclose)
+{
+ pid_t pid;
+ int fd;
+
+ 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((fd = open("/dev/tty", O_RDWR)) >= 0)
+ {
+ if(ioctl(fd, TIOCNOTTY, NULL))
+ {
+ perror("ioctl");
+ return -1;
+ }
+ close(fd);
+ }
+
+ if(setsid() < 0)
+ return -1;
+
+ kill(ppid, SIGTERM);
+
+ if(!nochdir)
+ chdir("/");
+
+ if(!noclose)
+ fcloseall();
+}
+#endif
+
/*
Close network connections, and terminate neatly
*/
void cleanup_and_exit(int c)
{
+cp
close_network_connections();
if(debug_lvl > DEBUG_NOTHING)
int write_pidfile(void)
{
int pid;
-
+cp
if((pid = check_pid(pidfilename)))
{
if(netname)
/* if it's locked, write-protected, or whatever */
if(!write_pid(pidfilename))
return 1;
-
+cp
return 0;
}
int kill_other(void)
{
int pid;
-
+cp
if(!(pid = read_pid(pidfilename)))
{
if(netname)
if(kill(pid, SIGTERM) && errno == ESRCH)
fprintf(stderr, _("Removing stale lock file.\n"));
remove_pid(pidfilename);
-
+cp
return 0;
}
*/
int detach(void)
{
- int fd;
- pid_t pid;
-
+cp
setup_signals();
+ if(do_detach)
+ daemon(0, 0);
+
if(write_pidfile())
return -1;
- if(do_detach)
- daemon(FALSE, FALSE);
-
openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
if(debug_lvl > DEBUG_NOTHING)
syslog(LOG_NOTICE, _("tincd %s starting"), VERSION);
xalloc_fail_func = memory_full;
-
+cp
return 0;
}
int error = 0;
char *scriptname;
char *s;
-
+ int fd;
+
+cp
if(netname)
{
asprintf(&s, "NETNAME=%s", netname);
fcloseall();
/* Open standard input */
- if(open("/dev/null", O_RDONLY) < 0)
+ if((fd = open("/dev/null", O_RDONLY)) < 0)
{
syslog(LOG_ERR, _("Opening `/dev/null' failed: %m"));
error = 1;
}
+ if(dup2(fd, 0) != 0)
+ {
+ syslog(LOG_ERR, _("Couldn't assign /dev/null to standard input: %m"));
+ error = 1;
+ }
if(!error)
{
+ close(1); /* fd #1 should be the first available filedescriptor now. */
/* Standard output directly goes to syslog */
openlog(name, LOG_CONS | LOG_PID, LOG_DAEMON);
/* Standard error as well */
int execute_script(const char *name)
{
pid_t pid;
-
+cp
if((pid = fork()) < 0)
{
syslog(LOG_ERR, _("System call `%s' failed: %m"),
if(pid)
{
- list_append(child_pids, (void*)(int)pid);
+ list_append(child_pids, &pid);
return 0;
}
-
+cp
/* Child here */
_execute_script(name);
}
{
pid_t pid;
int status;
-
+cp
pid = (pid_t) data;
pid = waitpid(pid, &status, WNOHANG);
if(WIFEXITED(status))
}
return -1;
}
-
+cp
/* Child is still running */
return 0;
}
RETSIGTYPE
sigusr1_handler(int a)
{
- dump_conn_list();
+ dump_connection_list();
}
RETSIGTYPE