7 /* uClinux-2.0 has vfork, but Linux 2.0 doesn't */
8 #include <sys/syscall.h>
9 #if ! defined __NR_vfork
13 int __libc_system(command)
17 __sighandler_t save_quit, save_int, save_chld;
22 save_quit = signal(SIGQUIT, SIG_IGN);
23 save_int = signal(SIGINT, SIG_IGN);
24 save_chld = signal(SIGCHLD, SIG_DFL);
26 if ((pid = vfork()) < 0) {
27 signal(SIGQUIT, save_quit);
28 signal(SIGINT, save_int);
29 signal(SIGCHLD, save_chld);
33 signal(SIGQUIT, SIG_DFL);
34 signal(SIGINT, SIG_DFL);
35 signal(SIGCHLD, SIG_DFL);
37 execl("/bin/sh", "sh", "-c", command, (char *) 0);
40 /* Signals are not absolutly guarenteed with vfork */
41 signal(SIGQUIT, SIG_IGN);
42 signal(SIGINT, SIG_IGN);
45 printf("Waiting for child %d\n", pid);
48 if (wait4(pid, &wait_val, 0, 0) == -1)
51 signal(SIGQUIT, save_quit);
52 signal(SIGINT, save_int);
53 signal(SIGCHLD, save_chld);
56 weak_alias(__libc_system, system)