typed-constant SIG_DFL {void(*)(int)}
typed-constant SIG_ERR {void(*)(int)}
typed-constant SIG_HOLD {void(*)(int)}
typed-constant SIG_IGN {void(*)(int)}

type sig_atomic_t
type sigset_t
type pid_t

element {union sigval} int sival_int
element {union sigval} {void*} sival_ptr

type {struct sigevent}

// Test the elements of the sigevent_t structure.
element {struct sigevent} int sigev_notify
element {struct sigevent} int sigev_signo
element {struct sigevent} {union sigval} sigev_value
element {struct sigevent} {void(*} sigev_notify_function )(union sigval)
element {struct sigevent} {pthread_attr_t*} sigev_notify_attributes

constant SIGEV_NONE
constant SIGEV_SIGNAL
constant SIGEV_THREAD

type {union sigval}

macro SIGRTMIN
macro SIGRTMAX

constant SIGABRT
constant SIGALRM
constant SIGFPE
constant SIGHUP
constant SIGILL
constant SIGINT
constant SIGIO
constant SIGKILL
constant SIGPIPE
constant SIGQUIT
constant SIGSEGV
constant SIGTERM
constant SIGUSR1
constant SIGUSR2
constant SIGCHLD
constant SIGCONT
constant SIGSTOP
constant SIGTSTP
constant SIGTTIN
constant SIGTTOU
constant SIGBUS
constant SIGPOLL
constant SIGPROF
constant SIGSYS
constant SIGTRAP
constant SIGURG
constant SIGVTALRM
constant SIGXCPU
constant SIGXFSZ

type {struct sigaction}

element {struct sigaction} {void(*} sa_handler )(int)
element {struct sigaction} sigset_t sa_mask
element {struct sigaction} int sa_flags
element {struct sigaction} {void(*} sa_sigaction )(int, siginfo_t*, void*)

constant SA_NOCLDSTOP
constant SIG_BLOCK
constant SIG_UNBLOCK
constant SIG_SETMASK
constant SA_ONSTACK
constant SA_RESETHAND
constant SA_RESTART
constant SA_SIGINFO
constant SA_NOCLDWAIT
constant SA_NODEFER
constant SS_ONSTACK
constant SS_DISABLE
constant MINSIGSTKSZ
constant SIGSTKSZ

type ucontext_t

element ucontext_t {ucontext_t*} uc_link
element ucontext_t sigset_t uc_sigmask
element ucontext_t stack_t uc_stack
element ucontext_t mcontext_t uc_mcontext

type stack_t

element stack_t {void*} ss_sp
element stack_t size_t ss_size
element stack_t int ss_flags

type {struct sigstack}

element {struct sigstack} int ss_onstack
element {struct sigstack} {void*} ss_sp

type siginfo_t

element siginfo_t int si_signo
element siginfo_t int si_errno
element siginfo_t int si_code
element siginfo_t pid_t si_pid
element siginfo_t uid_t si_uid
element siginfo_t {void*} si_addr
element siginfo_t int si_status
element siginfo_t long si_band
element siginfo_t {union sigval} si_value

constant ILL_ILLOPC
constant ILL_ILLOPN
constant ILL_ILLADR
constant ILL_ILLTRP
constant ILL_PRVOPC
constant ILL_PRVREG
constant ILL_COPROC
constant ILL_BADSTK
constant FPE_INTDIV
constant FPE_INTOVF
constant FPE_FLTDIV
constant FPE_FLTOVF
constant FPE_FLTUND
constant FPE_FLTRES
constant FPE_FLTINV
constant FPE_FLTSUB
constant SEGV_MAPERR
constant SEGV_ACCERR
constant BUS_ADRALN
constant BUS_ADRERR
constant BUS_OBJERR
constant TRAP_BRKPT
constant TRAP_TRACE
constant CLD_EXITED
constant CLD_KILLED
constant CLD_DUMPED
constant CLD_TRAPPED
constant CLD_STOPPED
constant CLD_CONTINUED
constant POLL_IN
constant POLL_OUT
constant POLL_MSG
constant POLL_ERR
constant POLL_PRI
constant POLL_HUP
constant SI_USER
constant SI_QUEUE
constant SI_TIMER
constant SI_ASYNCIO
constant SI_MESGQ

function void (*bsd_signal (int, void(*)(int)))(int)
function int kill (pid_t, int)
function int killpg (pid_t, int)
function int pthread_kill (pthread_t, int)
function int pthread_sigmask (int, const sigset_t*, sigset_t*)
function int raise (int)
function int sigaction (int, const struct sigaction*, struct sigaction*)
function int sigaddset (sigset_t*, int)
function int sigaltstack (const stack_t*, stack_t*)
function int sigdelset (sigset_t*, int)
function int sigemptyset (sigset_t*)
function int sigfillset (sigset_t*)
function int sighold (int)
function int sigignore (int)
function int siginterrupt (int, int)
function int sigismember (const sigset_t*, int)
function void (*signal (int, void(*)(int)))(int)
function int sigpause (int)
function int sigpending (sigset_t*)
function int sigprocmask (int, const sigset_t*, sigset_t*)
function int sigqueue (pid_t, int, const union sigval)
function int sigrelse (int)
function void (*sigset (int, void(*)(int)))(int)
function int sigstack (struct sigstack*, struct sigstack*)
function int sigsuspend (const sigset_t*)
function int sigtimedwait (const sigset_t*, siginfo_t*, const struct timespec*)
function int sigwait (const sigset_t*, int*)
function int sigwaitinfo (const sigset_t*, siginfo_t*)

allow SIG*
allow sa_*
allow uc_*
allow ss_*
allow sv_*
allow si_*
allow SI_*
allow sigev_*
allow SIGEV_*
allow sival_*
allow SA_*
allow BUS_*
allow CLD_*
allow FPE_*
allow ILL_*
allow POLL_*
allow SEGV_*
allow SS_*
allow SV_*
allow TRAP_*
allow *_t