sigprocmask man page on Minix

sigprocmask man page on Minix

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SIGPROCMASK(2)							SIGPROCMASK(2)

NAME
       sigprocmask - manipulate the signal mask

SYNOPSIS
       #include <signal.h>

       int sigprocmask(int how, const sigset_t *set, sigset_t *oset)

DESCRIPTION
       Sigprocmask()  examines	or  manipulates the signal mask.  This mask is
       the set of signals that are currently blocked.  The how argument deter‐
       mines  the  action that must be performed.  In all cases the signal set
       referenced by oset, if not NULL, will be used to receive the old signal
       mask.  The set argument, if not NULL, will be used to set or modify the
       current signal mask.

       How can be one of:

       SIG_BLOCK      Add the signals referenced by set to the mask.

       SIG_UNBLOCK    Remove the signals referenced by set from the mask.

       SIG_SETMASK    Set the signal mask to the set referenced by set.

       The value of how is ignored if set is NULL.

SEE ALSO
       sigaction(2), sigpending(2), sigsuspend(2), sigset(3).

DIAGNOSTICS
       Returns 0 on success and -1 on error.  The error code is EFAULT	for  a
       bad set or oset address, or EINVAL for a bad how argument.

AUTHOR
       Kees J. Bot (kjb@cs.vu.nl)

								SIGPROCMASK(2)

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