SYNOPSIS
       #define _GNU_SOURCE
       #include <sys/types.h>
       #include <sys/stat.h>

       mode_t getumask(void);

DESCRIPTION
       This function returns the current file creation mask.  It is equivalent
       to

           mode_t getumask(void)
           {
               mode_t mask = umask( 0 );
               umask(mask);
               return mask;
           }

       except that it is documented to be thread-safe (that is, shares a  lock
       with the umask(2) library call).

CONFORMING TO
       This is a vaporware GNU extension.

NOTES
       This  function  is  documented  but not implemented yet in glibc, as at
       version 2.9.

SEE ALSO
       umask(2)

COLOPHON
       This page is part of release 3.23 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/.