027e2eed28
Here is the spec: https://pubs.opengroup.org/onlinepubs/009695399/functions/umask.html Note: The simple implementaton is enough since NuttX doesn't really support the permission Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/****************************************************************************
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* libs/libc/misc/lib_umask.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/stat.h>
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static mode_t g_mask;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: umask
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*
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* Description:
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* Set and get the file mode creation mask
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*
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* Input Parameters:
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* mask - The process' file mode creation mask
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*
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* Returned Value:
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* The previous value of the mask.
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*
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****************************************************************************/
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mode_t umask(mode_t mask)
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{
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mode_t prev = g_mask;
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g_mask = mask & 0777;
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return prev;
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}
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