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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.

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 3.65 of the Linux  man-pages  project.   A
       description  of  the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.



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