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/* This is part of um-ViewOS
* The user-mode implementation of OSVIEW -- A Process with a View
*
* example of um-ViewOS module:
* Identity module.
*
* Copyright 2005 Renzo Davoli University of Bologna - Italy
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* $Id: real.c 1003 2011-09-06 10:32:34Z rd235 $
*
*/
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <string.h>
#include <config.h>
#include "module.h"
#include "libummod.h"
#include "gdebug.h"
// int read(), write(), close();
static struct service s;
VIEWOS_SERVICE(s)
static long addproc(int id, int max)
{
GDEBUG(3, "new process id %d pid %d max %d",id,um_mod_getpid(),max);
return 0;
}
static long delproc(int id)
{
GDEBUG(3, "terminated process id %d pid %d",id,um_mod_getpid());
return 0;
}
static long addmodule(char *sender)
{
GDEBUG(3, "new module loaded. %s", sender);
return 0;
}
static long delmodule(char *sender)
{
GDEBUG(3, "module %s removed", sender);
return 0;
}
static long ctl(int type, char *sender, va_list ap)
{
int id, /*ppid,*/ max;
switch(type)
{
case MC_PROC | MC_ADD:
id = va_arg(ap, int);
/*ppid = */ va_arg(ap, int);
max = va_arg(ap, int);
return addproc(id, max);
case MC_PROC | MC_REM:
id = va_arg(ap, int);
return delproc(id);
case MC_MODULE | MC_ADD:
return addmodule(sender);
case MC_MODULE | MC_REM:
return delmodule(sender);
default:
return -1;
}
}
void *viewos_init(char *args)
{
return ht_tab_pathadd(CHECKPATH,"/","/","real",0,"",&s,0,NULL,NULL);
}
void viewos_fini(void *data)
{
struct ht_elem *proc_ht=data;
ht_tab_del(proc_ht);
}
static void
__attribute__ ((constructor))
init (void)
{
printk(KERN_NOTICE "real init\n");
s.name="real";
s.description="Identity (server side)";
s.ctl = ctl;
MCH_ZERO(&(s.ctlhs));
MCH_SET(MC_PROC, &(s.ctlhs));
MCH_SET(MC_MODULE, &(s.ctlhs));
s.syscall=(sysfun *)calloc(scmap_scmapsize,sizeof(sysfun));
s.socket=(sysfun *)calloc(scmap_sockmapsize,sizeof(sysfun));
SERVICESYSCALL(s, open, (sysfun)open);
SERVICESYSCALL(s, read, read);
SERVICESYSCALL(s, write, write);
SERVICESYSCALL(s, close, close);
#if !defined(__x86_64__)
//SERVICESYSCALL(s, stat64, stat64);
SERVICESYSCALL(s, lstat64, lstat64);
#else
SERVICESYSCALL(s, lstat, lstat);
#endif
SERVICESYSCALL(s, readlink, readlink);
SERVICESYSCALL(s, getdents64, getdents64);
SERVICESYSCALL(s, access, access);
#ifdef __NR_fcntl64
SERVICESYSCALL(s, fcntl, fcntl64);
#else
SERVICESYSCALL(s, fcntl, fcntl);
#endif
#if !defined(__x86_64__)
SERVICESYSCALL(s, _llseek, _llseek);
#endif
}
static void
__attribute__ ((destructor))
fini (void)
{
free(s.syscall);
free(s.socket);
printk(KERN_NOTICE "real fini\n");
}
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