redhat man page for sigpause

SIGPAUSE(2)						     Linux Programmer's Manual						       SIGPAUSE(2)

NAME
       sigpause - atomically release blocked signals and wait for interrupt

SYNOPSIS
       #include <signal.h>

       int sigpause(int sigmask);

DESCRIPTION
       This interface is made obsolete by sigsuspend(2).

       sigpause  assigns  sigmask  to  the  set  of  masked  signals and then waits for a signal to arrive; on return the set of masked signals is
       restored.

       sigmask is usually 0 to indicate that no signals are to be blocked.  sigpause always terminates by being  interrupted,  returning  -1  with
       errno set to EINTR.

CONFORMING TO
       4.4BSD.	The sigpause function call appeared in 4.3BSD and is deprecated.

SEE ALSO
       sigsuspend(2), kill(2), sigaction(2), sigprocmask(2), sigblock(2), sigvec(2)

Linux 1.3							    1993-07-24							       SIGPAUSE(2)