int main()
{
int n = max_open_files();
printf("max number of open files is: %d\n", n);
return 0;
}
void
port_shutdown_extra_fds (void)
{
const int top = max_open_files ();
int f;
for (f = 0; f < top; f++)
close (f);
}
int my_system_get_child_pid (int flags, const char *shell, const char *command, pid_t *pid)
{
struct sigaction ignore, save_intr, save_quit, save_stop;
int status = 0, i;
ignore.sa_handler = SIG_IGN;
sigemptyset (&ignore.sa_mask);
ignore.sa_flags = 0;
sigaction (SIGINT, &ignore, &save_intr);
sigaction (SIGQUIT, &ignore, &save_quit);
if ((*pid = fork ()) < 0){
fprintf (stderr, "\n\nfork () = -1\n");
return -1;
}
if (*pid == 0){
const int top = max_open_files ();
sigaction (SIGINT, &save_intr, NULL);
sigaction (SIGQUIT, &save_quit, NULL);
for (i = 3; i < top; i++)
close (i);
*pid = fork ();
if (*pid == 0){
if (flags & EXECUTE_AS_SHELL)
execl (shell, shell, "-c", command, (char *) 0);
else
execlp (shell, shell, command, (char *) 0);
/* See note below for why we use _exit () */
_exit (127); /* Exec error */
} else {
int status;
waitpid (*pid, &status, 0);
if (flags & EXECUTE_TEMPFILE)
unlink (command);
}
/* We need to use _exit instead of exit to avoid
* calling the atexit handlers (specifically the gdk atexit
* handler
*/
_exit (0);
}
sigaction (SIGINT, &save_intr, NULL);
sigaction (SIGQUIT, &save_quit, NULL);
sigaction (SIGTSTP, &save_stop, NULL);
#ifdef SCO_FLAVOR
waitpid(-1, NULL, WNOHANG);
#endif /* SCO_FLAVOR */
return WEXITSTATUS(status);
}
