CentOS 7.0 - man page for ssetmask (centos section 2)
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SGETMASK(2) Linux Programmer's Manual SGETMASK(2)
sgetmask, ssetmask - manipulation of signal mask (obsolete)
long ssetmask(long newmask);
Note: There are no glibc wrappers for these system calls; see NOTES.
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.
sgetmask() always successfully returns the signal mask. ssetmask() always succeeds, and
returns the previous signal mask.
These system calls always succeed.
These system calls are Linux-specific.
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 sig-
It is not possible to block SIGSTOP or SIGKILL.
This page is part of release 3.53 of the Linux man-pages project. A description of the
project, and information about reporting bugs, can be found at
Linux 2012-07-13 SGETMASK(2)
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