SGETMASK
Section: Linux Programmer's Manual (2)
Updated: 2017-09-15
Index
Return to Main Contents
NAME
sgetmask, ssetmask - manipulation of signal mask (obsolete)
SYNOPSIS
long sgetmask(void);
long ssetmask(long newmask);
Note:
There are no glibc wrappers for these system calls; see NOTES.
DESCRIPTION
These system calls are obsolete.
Do not use them;
use
sigprocmask(2)
instead.
sgetmask()
returns the signal mask of the calling process.
ssetmask()
sets the signal mask of the calling process to the value given in
newmask.
The previous signal mask is returned.
The signal masks dealt with by these two system calls
are plain bit masks (unlike the
sigset_t
used by
sigprocmask(2));
use
sigmask(3)
to create and inspect these masks.
RETURN VALUE
sgetmask()
always successfully returns the signal mask.
ssetmask()
always succeeds, and returns the previous signal mask.
ERRORS
These system calls always succeed.
VERSIONS
Since Linux 3.16,
support for these system calls is optional,
depending on whether the kernel was built with the
CONFIG_SGETMASK_SYSCALL
option.
CONFORMING TO
These system calls are Linux-specific.
NOTES
Glibc does not provide wrappers for these obsolete system calls;
in the unlikely event that you want to call them, use
syscall(2).
These system calls are unaware of signal numbers greater than 31
(i.e., real-time signals).
These system calls do not exist on x86-64.
It is not possible to block
SIGSTOP
or
SIGKILL.
SEE ALSO
sigprocmask(2),
signal(7)
COLOPHON
This page is part of release 4.13 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- VERSIONS
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
- COLOPHON
-
|
|
- Running on 
-
:
: 