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getumask.3: Remove page
This function was never implemented on Linux. It seems pointless to retain such a page 20 years after it was written.
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.\" Copyright (C) 2002 Andries Brouwer <aeb@cwi.nl>
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.\"
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.\" %%%LICENSE_START(VERBATIM)
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%LICENSE_END
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.\"
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.\" This replaces an earlier man page written by Walter Harms
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.\" <walter.harms@informatik.uni-oldenburg.de>.
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.\"
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.TH GETUMASK 3 2021-03-22 "GNU" "Linux Programmer's Manual"
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.SH NAME
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getumask \- get file creation mask
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.SH SYNOPSIS
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.nf
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.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
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.B "#include <sys/types.h>"
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.B "#include <sys/stat.h>"
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.PP
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.B "mode_t getumask(void);"
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.fi
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.SH DESCRIPTION
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This function returns the current file creation mask.
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It is equivalent to
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.PP
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.in +4n
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.EX
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mode_t getumask(void)
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{
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mode_t mask = umask( 0 );
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umask(mask);
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return mask;
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}
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.EE
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.in
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.PP
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except that it is documented to be thread-safe (that is, shares
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a lock with the
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.BR umask (2)
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library call).
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.SH CONFORMING TO
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This is a vaporware GNU extension.
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.SH NOTES
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This function is documented in the glibc manual, but,
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as at glibc version 2.24, it is not implemented on Linux.
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(See
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.BR umask (2)
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for a thread-safe method of discovering a process's umask.)
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.SH SEE ALSO
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.BR umask (2)
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