cbe3fb5c60
Change the copyright header of assorted source files in libs/libc to the ASF version. I was listed as the author in these files. I did also check the heritage of those files and besides me they have only been changed by the following people, all of whom did sign a CLA to the best of my knowledge: Alin Jerpelea Haitao Liu Gregory Nutt Yamamoto Takashi Xiang Xiao Signed-off-by: Michael Jung <mijung@gmx.net>
75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/****************************************************************************
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* libs/libc/grp/lib_getgrgid.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 <nuttx/config.h>
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#include <grp.h>
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#include "grp/lib_grp.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: getgrgid
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*
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* Description:
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* The getgrgid() function searches the group database for an entry with
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* a matching gid.
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*
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* Input Parameters:
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* gid - The gid to return a group structure for
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*
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* Returned Value:
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* A pointer to a statically allocated group structure, or NULL if no
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* matching entry is found or an error occurs. Applications wishing to
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* check for error situations should set errno to 0 before calling
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* getgrgid(). If getgrgid() returns a null pointer and errno is set to
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* non-zero, an error occurred.
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*
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****************************************************************************/
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FAR struct group *getgrgid(gid_t gid)
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{
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#ifdef CONFIG_LIBC_GROUP_FILE
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int ret;
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ret = grp_findby_gid(gid, &g_group, g_group_buffer, GRPBUF_RESERVE_SIZE);
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if (ret != 1)
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{
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return NULL;
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}
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return &g_group;
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#else
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if (gid != ROOT_GID)
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{
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return NULL;
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}
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return getgrbuf(ROOT_GID, ROOT_NAME, ROOT_PASSWD);
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#endif
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}
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