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.
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 3.74 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
http://www.kernel.org/doc/man-pages/.
