103 lines
3.8 KiB
C
103 lines
3.8 KiB
C
/****************************************************************************
|
|
* libs/libc/grp/lib_getgrnamr.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 <string.h>
|
|
#include <grp.h>
|
|
|
|
#include "grp/lib_grp.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: getgrnam_r
|
|
*
|
|
* Description:
|
|
* The getgrnam_r() function searches the group database for an entry with
|
|
* a matching name and stores the retrieved group structure in the space
|
|
* pointed to by grp.
|
|
*
|
|
* Input Parameters:
|
|
* name - The name of the group to return a group structure for.
|
|
* grp - Pointer to the space to store the retrieved group structure in.
|
|
* buf - The string fields pointed to by the group struct are stored here.
|
|
* buflen - The length of buf in bytes.
|
|
* result - Pointer to the resulting group struct, or NULL in case of fail.
|
|
*
|
|
* Returned Value:
|
|
* On success getgrnam_r returns 0 and sets *result to grp. If no match
|
|
* is found, 0 is returned and *result is set to NULL. In case of failure
|
|
* an error number is returned.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int getgrnam_r(FAR const char *name, FAR struct group *grp, FAR char *buf,
|
|
size_t buflen, FAR struct group **result)
|
|
{
|
|
#ifdef CONFIG_LIBC_GROUP_FILE
|
|
int ret;
|
|
|
|
ret = grp_findby_name(name, grp, buf, buflen);
|
|
if (ret != 1)
|
|
{
|
|
*result = NULL;
|
|
return ret < 0 ? -ret : 0;
|
|
}
|
|
|
|
*result = grp;
|
|
return 0;
|
|
#else
|
|
if (strcmp(name, ROOT_NAME))
|
|
{
|
|
/* The only known group is 'root', which has a gid of 0. Thus, report
|
|
* back that no match was found.
|
|
*/
|
|
|
|
*result = NULL;
|
|
return 0;
|
|
}
|
|
|
|
return getgrbuf_r(ROOT_GID, ROOT_NAME, ROOT_PASSWD, grp, buf, buflen,
|
|
result);
|
|
#endif
|
|
}
|