90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/****************************************************************************
|
|
* libs/libc/unistd/lib_setegid.c
|
|
*
|
|
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
|
|
* Author: Michael Jung <mijung@gmx.net>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: setegid
|
|
*
|
|
* Description:
|
|
* The setegid() function sets the effect group ID of the calling task
|
|
* group to gid.
|
|
*
|
|
* Input Parameters:
|
|
* gid - Identity to set the various process' group ID attributes to.
|
|
*
|
|
* Returned Value:
|
|
* Zero if successful and -1 in case of failure, in which case errno is set
|
|
* appropriately.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int setegid(gid_t gid)
|
|
{
|
|
#ifdef CONFIG_SCHED_USER_IDENTITY
|
|
/* If we have real UID/GID support, then treat the effective user ID as
|
|
* the real group ID.
|
|
*/
|
|
|
|
return setgid(gid);
|
|
#else
|
|
/* NuttX only supports the group identity 'root' with a gid value of 0. */
|
|
|
|
if (gid == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* All other gid values are considered invalid and not supported by the
|
|
* implementation.
|
|
*/
|
|
|
|
set_errno(EINVAL);
|
|
return -1;
|
|
#endif
|
|
}
|