5826e8eeb1
The pw_gecos field is not specified in POSIX, but is
present on most implementations.
passwd file format:
name:uid:gid:gecos:dir:shell
ex: gdm❌127:133:Gnome Display Manager:/var/lib/gdm3:/bin/false
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/****************************************************************************
|
|
* libs/libc/pwd/lib_getpwuid.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 <pwd.h>
|
|
|
|
#include "pwd/lib_pwd.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: getpwuid
|
|
*
|
|
* Description:
|
|
* The getpwuid() function searches the user database for an entry with a
|
|
* matching uid.
|
|
*
|
|
* Input Parameters:
|
|
* uid - The uid 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
|
|
* getpwuid(). If getpwuid() returns a null pointer and errno is set to
|
|
* non-zero, an error occurred.
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR struct passwd *getpwuid(uid_t uid)
|
|
{
|
|
#ifdef CONFIG_LIBC_PASSWD_FILE
|
|
int ret;
|
|
|
|
ret = pwd_findby_uid(uid, &g_passwd, g_passwd_buffer,
|
|
CONFIG_LIBC_PASSWD_LINESIZE);
|
|
if (ret != 1)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
return &g_passwd;
|
|
#else
|
|
if (uid != ROOT_UID)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
return getpwbuf(ROOT_UID, ROOT_GID, ROOT_NAME, ROOT_NAME, ROOT_DIR,
|
|
ROOT_SHELL);
|
|
#endif
|
|
}
|