killpg.c 1.1 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 Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the 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. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <errno.h>
  15. #include <signal.h>
  16. /* Send SIG to all processes in process group PGRP.
  17. If PGRP is zero, send SIG to all processes in
  18. the current process's process group. */
  19. int
  20. killpg (__pid_t pgrp, int sig)
  21. {
  22. if (pgrp < 0)
  23. {
  24. __set_errno (EINVAL);
  25. return -1;
  26. }
  27. return kill (- pgrp, sig);
  28. }