along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: process.c,v 1.1.2.6 2000/11/20 22:13:12 guus Exp $
+ $Id: process.c,v 1.1.2.13 2000/11/24 12:44:39 zarq 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"
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
+
+int become_daemon(void)
+{
+ 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);
+
+ chdir("/");
+ fcloseall();
+}
+
/*
Close network connections, and terminate neatly
*/
*/
int detach(void)
{
- int fd;
- pid_t pid;
cp
setup_signals();
+ if(do_detach)
+ if(become_daemon() < 0)
+ return -1;
+
if(write_pidfile())
return -1;
- if(do_detach)
- daemon(0, 0);
-
openlog(identname, LOG_CONS | LOG_PID, LOG_DAEMON);
if(debug_lvl > DEBUG_NOTHING)
int error = 0;
char *scriptname;
char *s;
+ int fd;
+
cp
if(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 */
"fork");
return -1;
}
-cp
+
if(pid)
{
- syslog(LOG_DEBUG, "%p, %d (%p)", child_pids, pid, &pid);
list_append(child_pids, &pid);
-cp
return 0;
}
cp