sigsuspend(2)                                                 sigsuspend(2)

NAME
     sigsuspend - install a signal mask and suspend process

SYNOPSIS
     #include <signal.h>

     int sigsuspend(const sigsett *set);

DESCRIPTION
     sigsuspend() replaces the process' signal mask with the set of signals
     pointed to by set, and then suspends the process until delivery of a
     signal whose action is either to execute a signal catching function or
     to terminate the process.

     If the action is to terminate the process, sigsuspend() does not
     return. If the action is to execute a signal catching function, sig-
     suspend() returns after the signal catching function returns. On
     return, the signal mask is restored to the set that existed before the

     It is not possible to block those signals that cannot be ignored [see
     signal(5)]; this restriction is silently imposed by the system.

     sigsuspend() fails if either of the following is true:

     EINTR    A signal is caught by the calling process and control is
              returned from the signal catching function.

     EFAULT   set points outside the process' allocated address space.

RESULT
     Since sigsuspend() suspends process execution indefinitely, there is
     no successful completion result. On failure, it returns -1 and sets
     errno to indicate the error.

SEE ALSO
     sigaction(2), sigpause(2), sigprocmask(2), sigsetops(3C), signal(5).



















Page 1                       Reliant UNIX 5.44                Printed 11/98