vfork.c 1.5 KB

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  1. /* vi: set sw=4 ts=4: */
  2. /*
  3. * vfork test for uClibc
  4. *
  5. * Copyright (C) 2000,2001 by Erik Andersen <andersen@uclibc.org>
  6. * Written by Erik Andersen <andersen@uclibc.org>
  7. *
  8. * This program is free software; you can redistribute it and/or modify it
  9. * under the terms of the GNU Library General Public License as published by
  10. * the Free Software Foundation; either version 2 of the License, or (at your
  11. * option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful, but WITHOUT
  14. * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15. * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
  16. * for more details.
  17. *
  18. * You should have received a copy of the GNU Library General Public License
  19. * along with this program; if not, write to the Free Software Foundation,
  20. * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21. *
  22. */
  23. #include <stdio.h>
  24. #include <stdlib.h>
  25. #include <unistd.h>
  26. #include <sys/wait.h>
  27. int main(void)
  28. {
  29. pid_t pid;
  30. int status, wpid;
  31. char *argv[] = {
  32. "/bin/ls",
  33. NULL,
  34. };
  35. if ((pid = vfork()) == 0) {
  36. printf("Hi. I'm the child process...\n");
  37. execvp(argv[0], argv);
  38. _exit(0);
  39. }
  40. printf("Hello. I'm the parent process.\n");
  41. while (1) {
  42. wpid = wait(&status);
  43. if (wpid > 0 && wpid != pid) {
  44. continue;
  45. }
  46. if (wpid == pid)
  47. break;
  48. }
  49. printf("Child process exited.\nGoodbye.\n");
  50. return EXIT_SUCCESS;
  51. }
  52. /*
  53. Local Variables:
  54. c-file-style: "linux"
  55. c-basic-offset: 4
  56. tab-width: 4
  57. End:
  58. */