libc
/* $Id$ */
/* Copyright (c) 2009 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libc */
/* All rights reserved.
*
* 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.
*
* 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
* HOLDER 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. */
#include "stdio.h"
#include "string.h"
#include "utmpx.h"
/* private */
static FILE * _fp = NULL;
/* public */
/* endutxent */
void endutxent(void)
{
if(_fp == NULL)
return;
fclose(_fp);
_fp = NULL;
}
/* getutxent */
struct utmpx * getutxent(void)
{
static struct utmpx ret;
if(_fp == NULL
&& (_fp = fopen("/var/run/utmpx", "r")) == NULL
&& (_fp = fopen("/var/run/utmp", "r")) == NULL)
return NULL;
if(fread(&ret, sizeof(ret), 1, _fp) != 1)
{
fclose(_fp);
_fp = NULL;
return NULL;
}
return &ret;
}
/* getutxid */
struct utmpx * getutxid(struct utmpx const * id)
{
static struct utmpx ret;
if(_fp == NULL
&& (_fp = fopen("/var/run/utmpx", "r")) == NULL
&& (_fp = fopen("/var/run/utmp", "r")) == NULL)
return NULL;
for(;;)
{
if(fread(&ret, sizeof(ret), 1, _fp) != 1)
{
fclose(_fp);
_fp = NULL;
return NULL;
}
if((ret.ut_type == BOOT_TIME || ret.ut_type == OLD_TIME
|| ret.ut_type == NEW_TIME)
&& ret.ut_type == id->ut_type)
break;
if((ret.ut_type == INIT_PROCESS || ret.ut_type == LOGIN_PROCESS
|| ret.ut_type == USER_PROCESS
|| ret.ut_type == DEAD_PROCESS)
&& (id->ut_type == INIT_PROCESS
|| id->ut_type == LOGIN_PROCESS
|| id->ut_type == OLD_TIME
|| id->ut_type == NEW_TIME)
&& ret.ut_id == id->ut_id)
break;
}
return &ret;
}
/* getutxline */
struct utmpx * getutxline(struct utmpx const * line)
{
static struct utmpx ret;
if(_fp == NULL
&& (_fp = fopen("/var/run/utmpx", "r")) == NULL
&& (_fp = fopen("/var/run/utmp", "r")) == NULL)
return NULL;
for(;;)
{
if(fread(&ret, sizeof(ret), 1, _fp) != 1)
{
fclose(_fp);
_fp = NULL;
return NULL;
}
if(ret.ut_type != LOGIN_PROCESS && ret.ut_type != USER_PROCESS)
continue;
if(strcmp(ret.ut_line, line->ut_line) == 0)
break;
}
return &ret;
}
/* pututxline */
/* FIXME implement */
/* setutxent */
/* FIXME implement */