test/unistd/vfork.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * vfork test for uClibc
   4  * Copyright (C) 2000-2006 by Erik Andersen <andersen@uclibc.org>
   5  *
   6  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   7  */
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <sys/wait.h>
  13 #include <sys/types.h>
  14
  15
  16 int main(void)
  17 {
  18         pid_t pid;
  19         int status, wpid;
  20         char *argv[] = {
  21                 "/bin/ls",
  22                 "-laF",
  23                 NULL,
  24         };
  25
  26         clearenv();
  27         if ((pid = vfork()) == 0) {
  28                 printf("Hi.  I'm the child process...\n");
  29                 execvp(argv[0], argv);
  30                 _exit(0);
  31         }
  32
  33         printf("Hello.  I'm the parent process.\n");
  34         while (1) {
  35                 wpid = wait(&status);
  36                 if (wpid > 0 && wpid != pid) {
  37                         continue;
  38                 }
  39                 if (wpid == pid)
  40                         break;
  41         }
  42
  43         printf("Child process exited.\nGoodbye.\n");
  44         return EXIT_SUCCESS;
  45 }
  46
  47 /*
  48 Local Variables:
  49 c-file-style: "linux"
  50 c-basic-offset: 4
  51 tab-width: 4
  52 End:
  53 */