Section (2) sgetmask
sgetmask, ssetmask — manipulation of signal mask (obsolete)
|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.
successfully returns the signal mask.
ssetmask() always succeeds, and returns the
previous signal mask.
Since Linux 3.16, support for these system calls is
optional, depending on whether the kernel was built with the
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
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