903e87a7bd
Implement I_SUID/I_SGID feature for binfs in the POSIX compliant way. If set-user-ID bit is set in the file permissions, then the effective user ID of process shall be set to UID of the new process image file. test case: hello example emulates to set uid and file set-user-ID bit, and call geteuid and getegid API. UID = 2000 GID = 3000 MODE = 06555 nsh> ls -l /bin/hello -r-sr-sr-x 2000 3000 0 hello nsh> hello geteuid:2000 getegid:3000 Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/****************************************************************************
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* libs/libc/builtin/lib_builtin_getgid.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 <nuttx/lib/builtin.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: builtin_getgid
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*
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* Description:
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* Returns file gid of the application at 'index' in the table
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* of built-in applications.
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*
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* Input Parameters:
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* index - From 0 and on ...
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*
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* Returned Value:
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* Returns valid gid for app if index is valid.
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* Otherwise 0 is returned.
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*
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****************************************************************************/
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gid_t builtin_getgid(int index)
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{
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FAR const struct builtin_s *builtin;
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builtin = builtin_for_index(index);
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if (builtin != NULL)
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{
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return builtin->gid;
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}
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/* Return group user identity 'root' with a gid value of 0. */
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return 0;
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}
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