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#include <stdio.h>

#include <stddef.h>

#include <signal.h>

#include <unistd.h>

#include <sys/wait.h>

/* uClinux-2.0 has vfork, but Linux 2.0 doesn't */

#include <sys/syscall.h>

#if ! defined __NR_vfork

#define vfork fork      

#endif

int __libc_system(char *command)

{

        int wait_val, pid;

        __sighandler_t save_quit, save_int, save_chld;

        if (command == 0)

                return 1;

        save_quit = signal(SIGQUIT, SIG_IGN);

        save_int = signal(SIGINT, SIG_IGN);

        save_chld = signal(SIGCHLD, SIG_DFL);

        if ((pid = vfork()) < 0) {

                signal(SIGQUIT, save_quit);

                signal(SIGINT, save_int);

                signal(SIGCHLD, save_chld);

                return -1;

        }

        if (pid == 0) {

                signal(SIGQUIT, SIG_DFL);

                signal(SIGINT, SIG_DFL);

                signal(SIGCHLD, SIG_DFL);

                execl("/bin/sh", "sh", "-c", command, (char *) 0);

                _exit(127);

        }

        /* Signals are not absolutly guarenteed with vfork */

        signal(SIGQUIT, SIG_IGN);

        signal(SIGINT, SIG_IGN);

#if 0

        printf("Waiting for child %d\n", pid);

#endif

        if (wait4(pid, &wait_val, 0, 0) == -1)

                wait_val = -1;

        signal(SIGQUIT, save_quit);

        signal(SIGINT, save_int);

        signal(SIGCHLD, save_chld);

        return wait_val;

}

weak_alias(__libc_system, system)