SIGBLOCK
Section: C Library Functions (3)
Index
Return to Main Contents
BSD mandoc
BSD 4.2
NAME
sigblock
- block signals
SYNOPSIS
Fd #include <signal.h>
Ft int
Fn sigblock int mask
Ft int
Fn sigmask signum
DESCRIPTION
Bf -symbolic
This interface is made obsolete by:
Ef sigprocmask(2).
Fn Sigblock
adds the signals specified in
Fa mask
to the set of signals currently
being blocked from delivery.
Signals are blocked if the
corresponding bit in
Fa mask
is a 1; the macro
Fn sigmask
is provided to construct the mask for a given
Fa signum .
It is not possible to block
SIGKILL
or
SIGSTOP
this restriction is silently
imposed by the system.
RETURN VALUES
The previous set of masked signals is returned.
SEE ALSO
kill(2),
sigprocmask(2),
sigaction(2),
sigsetmask(2),
sigsetops(3)
HISTORY
The
Fn sigblock
function call appeared in
BSD 4.2
and has been deprecated.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- SEE ALSO
-
- HISTORY
-
This document was created by
man2html,
using the manual pages.
Time: 21:44:08 GMT, August 05, 2022