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RedHat 9 (Linux i386) - man page for sigpause (redhat section 2)

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)