include/signal.h

   1 #ifndef _SIGNAL_H
   2 #if defined __need_sig_atomic_t || defined __need_sigset_t
   3 # include <signal/signal.h>
   4 #else
   5 # include <signal/signal.h>
   6
   7 # ifndef _ISOMAC
   8 libc_hidden_proto (sigemptyset)
   9 libc_hidden_proto (sigfillset)
  10 libc_hidden_proto (sigaddset)
  11 libc_hidden_proto (sigdelset)
  12 libc_hidden_proto (sigismember)
  13 extern int __sigpause (int sig_or_mask, int is_sig);
  14 libc_hidden_proto (__sigpause)
  15 libc_hidden_proto (raise)
  16 libc_hidden_proto (__libc_current_sigrtmin)
  17 libc_hidden_proto (__libc_current_sigrtmax)
  18 libc_hidden_proto (_sys_siglist)
  19
  20 /* Now define the internal interfaces.  */
  21 extern __sighandler_t __bsd_signal (int __sig, __sighandler_t __handler);
  22 extern int __kill (__pid_t __pid, int __sig);
  23 extern int __sigaction (int __sig, const struct sigaction *__restrict __act,
  24                         struct sigaction *__restrict __oact);
  25 libc_hidden_proto (__sigaction)
  26 extern int __sigblock (int __mask);
  27 extern int __sigsetmask (int __mask);
  28 extern int __sigprocmask (int __how,
  29                           const sigset_t *__set, sigset_t *__oset);
  30 extern int __sigsuspend (const sigset_t *__set);
  31 libc_hidden_proto (__sigsuspend)
  32 #ifndef NO_CANCELLATION
  33 extern int __sigsuspend_nocancel (const sigset_t *__set) attribute_hidden;
  34 #endif
  35 extern int __sigwait (const sigset_t *__set, int *__sig);
  36 libc_hidden_proto (__sigwait)
  37 extern int __sigwaitinfo (const sigset_t *__set, siginfo_t *__info);
  38 libc_hidden_proto (__sigwaitinfo)
  39 extern int __sigtimedwait (const sigset_t *__set, siginfo_t *__info,
  40                            const struct timespec *__timeout);
  41 libc_hidden_proto (__sigtimedwait)
  42 extern int __sigqueue (__pid_t __pid, int __sig,
  43                        const union sigval __val);
  44 #ifdef __USE_MISC
  45 extern int __sigreturn (struct sigcontext *__scp);
  46 #endif
  47 extern int __sigaltstack (const struct sigaltstack *__ss,
  48                           struct sigaltstack *__oss);
  49 extern int __libc_sigaction (int sig, const struct sigaction *act,
  50                              struct sigaction *oact);
  51 libc_hidden_proto (__libc_sigaction)
  52
  53 extern int __default_sigpause (int mask);
  54 extern int __xpg_sigpause (int sig);
  55
  56 /* Simplified sigemptyset() implementation without the parameter checking.  */
  57 #undef __sigemptyset
  58 #define __sigemptyset(ss) \
  59   ({ __builtin_memset (ss, '\0', sizeof (sigset_t)); 0; })
  60
  61
  62 /* Allocate real-time signal with highest/lowest available priority.  */
  63 extern int __libc_allocate_rtsig (int __high);
  64
  65 #  if IS_IN (rtld)
  66 extern __typeof (__sigaction) __sigaction attribute_hidden;
  67 extern __typeof (__libc_sigaction) __libc_sigaction attribute_hidden;
  68 #  endif
  69 # endif
  70 #endif
  71 #endif