incubator-nuttx/libs/libc/pwd/lib_getpwnam.c

78 lines
2.6 KiB
C

/****************************************************************************
* libs/libc/pwd/lib_getpwnam.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#include <pwd.h>
#include "pwd/lib_pwd.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: getpwnam
*
* Description:
* The getpwnam() function searches the user database for an entry with a
* matching name.
*
* Input Parameters:
* name - The user name to return a passwd structure for.
*
* Returned Value:
* A pointer to a statically allocated passwd structure, or NULL if no
* matching entry is found or an error occurs. Applications wishing to
* check for error situations should set errno to 0 before calling
* getpwnam(). If getpwnam() returns a null pointer and errno is set to
* non-zero, an error occurred.
*
****************************************************************************/
FAR struct passwd *getpwnam(FAR const char *name)
{
#ifdef CONFIG_LIBC_PASSWD_FILE
int ret;
ret = pwd_findby_name(name, &g_passwd, g_passwd_buffer,
CONFIG_LIBC_PASSWD_LINESIZE);
if (ret != 1)
{
return NULL;
}
return &g_passwd;
#else
if (strcmp(name, ROOT_NAME))
{
return NULL;
}
return getpwbuf(ROOT_UID, ROOT_GID, ROOT_NAME, ROOT_GEOCS, ROOT_DIR,
ROOT_SHELL);
#endif
}