Ondřej Surý
aca7dd3961
As it's impossible to get the current umask without modifying it at the same time, initialize the current umask at the program start and keep the loaded value internally. Add isc_os_umask() function to access the starttime umask.
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#pragma once
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/*! \file isc/os.h */
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#include <sys/stat.h>
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#include <isc/lang.h>
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#include <isc/types.h>
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ISC_LANG_BEGINDECLS
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/*%<
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* Hardcode the L1 cacheline size of the CPU to 64, this is checked in
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* the os.c library constructor if operating system provide means to
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* get the L1 cacheline size using sysconf().
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*/
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#define ISC_OS_CACHELINE_SIZE 64
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unsigned int
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isc_os_ncpus(void);
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/*%<
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* Return the number of CPUs available on the system, or 1 if this cannot
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* be determined.
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*/
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unsigned long
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isc_os_cacheline(void);
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/*%<
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* Return L1 cacheline size of the CPU.
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* If L1 cache is greater than ISC_OS_CACHELINE_SIZE, ensure it is used
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* instead of constant. Is common on ppc64le architecture.
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*/
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mode_t
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isc_os_umask(void);
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/*%<
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* Return umask of the current process as initialized at the program start
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*/
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ISC_LANG_ENDDECLS
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