SGETMASK(7)

NAME
sgetmask, ssetmask - manipulation of signal mask (obsolete)

SYNOPSIS
long sgetmask(void);

long ssetmask(long newmask);

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.

CONFORMING TO
These system calls are Linux specific.

NOTES
Glibc does not provide wrappers for these system calls; use syscall(2). These system calls are unaware of signal numbers greater than 31 (i.e., real-time signals). It is not possible to block SIGSTOP or SIGKILL.

SEE ALSO
sigprocmask(2), signal(7)