sigqueue.c 1.8 KB

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  1. /* Copyright (C) 1997, 1998, 2000, 2003, 2005 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, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #include <errno.h>
  16. #include <signal.h>
  17. #include <unistd.h>
  18. #include <string.h>
  19. #include <sys/syscall.h>
  20. #if defined __USE_POSIX199309
  21. libc_hidden_proto(getpid)
  22. libc_hidden_proto(getuid)
  23. /* Experimentally off - libc_hidden_proto(memset) */
  24. #ifdef __NR_rt_sigqueueinfo
  25. # define __NR___libc_rt_sigqueueinfo __NR_rt_sigqueueinfo
  26. static __inline__ _syscall3(int, __libc_rt_sigqueueinfo, pid_t, pid, int, sig, void*, value)
  27. /* Return any pending signal or wait for one for the given time. */
  28. int sigqueue (pid_t pid, int sig, const union sigval val)
  29. {
  30. siginfo_t info;
  31. /* First, clear the siginfo_t structure, so that we don't pass our
  32. stack content to other tasks. */
  33. memset (&info, 0, sizeof (siginfo_t));
  34. /* We must pass the information about the data in a siginfo_t value. */
  35. info.si_signo = sig;
  36. info.si_code = SI_QUEUE;
  37. info.si_pid = getpid ();
  38. info.si_uid = getuid ();
  39. info.si_value = val;
  40. return __libc_rt_sigqueueinfo(pid, sig, __ptrvalue (&info));
  41. }
  42. #endif
  43. #endif