killpg.c 1.2 KB

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  1. /* Copyright (C) 1991, 1993, 1996, 1997 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14. Boston, MA 02111-1307, USA. */
  15. #include <errno.h>
  16. #include <signal.h>
  17. /* Send SIG to all processes in process group PGRP.
  18. If PGRP is zero, send SIG to all processes in
  19. the current process's process group. */
  20. int
  21. killpg ( __pid_t pgrp, int sig)
  22. {
  23. if (pgrp < 0)
  24. {
  25. __set_errno (EINVAL);
  26. return -1;
  27. }
  28. return kill (- pgrp, sig);
  29. }