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-.\" Copyright (C) 2002 Andries Brouwer <aeb@cwi.nl>
-.\"
-.\" %%%LICENSE_START(VERBATIM)
-.\" Permission is granted to make and distribute verbatim copies of this
-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
-.\" Permission is granted to copy and distribute modified versions of this
-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date.  The author(s) assume no
-.\" responsibility for errors or omissions, or for damages resulting from
-.\" the use of the information contained herein.  The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
-.\"
-.\" Formatted or processed versions of this manual, if unaccompanied by
-.\" the source, must acknowledge the copyright and authors of this work.
-.\" %%%LICENSE_END
-.\"
-.\" This replaces an earlier man page written by Walter Harms
-.\" <walter.harms@informatik.uni-oldenburg.de>.
-.\"
-.TH GETUMASK 3 2021-03-22 "GNU" "Linux Programmer's Manual"
-.SH NAME
-getumask \- get file creation mask
-.SH SYNOPSIS
-.nf
-.BR "#define _GNU_SOURCE" "             /* See feature_test_macros(7) */"
-.B "#include <sys/types.h>"
-.B "#include <sys/stat.h>"
-.PP
-.B "mode_t getumask(void);"
-.fi
-.SH DESCRIPTION
-This function returns the current file creation mask.
-It is equivalent to
-.PP
-.in +4n
-.EX
-mode_t getumask(void)
-{
-    mode_t mask = umask( 0 );
-    umask(mask);
-    return mask;
-}
-.EE
-.in
-.PP
-except that it is documented to be thread-safe (that is, shares
-a lock with the
-.BR umask (2)
-library call).
-.SH CONFORMING TO
-This is a vaporware GNU extension.
-.SH NOTES
-This function is documented in the glibc manual, but,
-as at glibc version 2.24, it is not implemented on Linux.
-(See
-.BR umask (2)
-for a thread-safe method of discovering a process's umask.)
-.SH SEE ALSO
-.BR umask (2)