98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
/****************************************************************************
|
|
* apps/fsutils/passwd/passwd_deluser.c
|
|
*
|
|
* Copyright (C) 2016 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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 <semaphore.h>
|
|
|
|
#include "fsutils/passwd.h"
|
|
|
|
#include "passwd.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: passwd_deluser
|
|
*
|
|
* Description:
|
|
* Remove an existing user from the /etc/passwd file. If the user does
|
|
* not exist, then this function will fail.
|
|
*
|
|
* Input Parameters:
|
|
* username - Identifies the user to be deleted
|
|
*
|
|
* Returned Value:
|
|
* Zero (OK) is returned on success; a negated errno value is returned on
|
|
* failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int passwd_deluser(FAR const char *username)
|
|
{
|
|
struct passwd_s passwd;
|
|
PASSWD_SEM_DECL(sem);
|
|
int ret;
|
|
|
|
/* Get exclusive access to the /etc/passwd file */
|
|
|
|
ret = passwd_lock(&sem);
|
|
if (ret < 0)
|
|
{
|
|
return ret;
|
|
}
|
|
|
|
/* Verify that the username exists in the /etc/passwd file */
|
|
|
|
ret = passwd_find(username, &passwd);
|
|
if (ret < 0)
|
|
{
|
|
/* The username does not exist in the /etc/passwd file */
|
|
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
/* Remove the line containing this user from the /etc/passwd file */
|
|
|
|
ret = passwd_delete(passwd.offset);
|
|
|
|
errout_with_lock:
|
|
(void)passwd_unlock(sem);
|
|
return ret;
|
|
}
|