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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
*
* 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: sockip.c 1003 2011-09-06 10:32:34Z rd235 $
*
*/
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <sys/socket.h>
#include <linux/net.h>
#include <string.h>
#include <config.h>
#include "module.h"
#include "libummod.h"
#include "gdebug.h"
#include <linux/net.h>
#include <linux/sockios.h>
#include <linux/if.h>
static struct service s;
VIEWOS_SERVICE(s)
static long ioctlparms(int fd, int req)
{
switch (req) {
case FIONREAD:
return sizeof(int) | IOCTL_W;
case FIONBIO:
return sizeof(int) | IOCTL_R;
case SIOCGIFCONF:
return sizeof(struct ifconf) | IOCTL_R | IOCTL_W;
case SIOCGSTAMP:
return sizeof(struct timeval) | IOCTL_W;
case SIOCGIFTXQLEN:
return sizeof(struct ifreq) | IOCTL_R | IOCTL_W;
case SIOCGIFFLAGS:
case SIOCGIFADDR:
case SIOCGIFDSTADDR:
case SIOCGIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCGIFMETRIC:
case SIOCGIFMEM:
case SIOCGIFMTU:
case SIOCGIFHWADDR:
return sizeof(struct ifreq) | IOCTL_R | IOCTL_W;
case SIOCSIFFLAGS:
case SIOCSIFADDR:
case SIOCSIFDSTADDR:
case SIOCSIFBRDADDR:
case SIOCSIFNETMASK:
case SIOCSIFMETRIC:
case SIOCSIFMEM:
case SIOCSIFMTU:
case SIOCSIFHWADDR:
case SIOCGIFINDEX:
return sizeof(struct ifreq) | IOCTL_R;
default:
return 0;
}
}
// int read(), write(), close();
/*
static int myread(int fd, char *buf, int size)
{
printk("READ %d %d\n ",fd,size);
int rv=read(fd,buf,size);
int i;
for (i=0;i<rv;i++)
printf("%02x",buf[i]);
printf("\n");
return rv;
}
static int mywrite(int fd, char *buf, int size)
{
int rv=write(fd,buf,size);
int i;
printf("WRITE %d %d %d ",fd,size,rv);
for (i=0;i<rv;i++)
printf("%02x",buf[i]);
printf("\n");
return rv;
}
static int mysocket(int domain, int type, int protocol)
{
int rv=socket(domain,type,protocol);
printk("socket %d %d %d -> %d\n",domain,type,protocol,rv);
return rv;
}
*/
static int sockioctl(int d, int request, void *arg)
{
if (request == SIOCGIFCONF) {
int rv;
void *save;
struct ifconf *ifc=(struct ifconf *)arg;
save=ifc->ifc_buf;
ioctl(d,request,arg);
ifc->ifc_buf=malloc(ifc->ifc_len);
um_mod_umoven((long) save,ifc->ifc_len,ifc->ifc_buf);
rv=ioctl(d,request,arg);
if (rv>=0)
um_mod_ustoren((long) save,ifc->ifc_len,ifc->ifc_buf);
free(ifc->ifc_buf);
ifc->ifc_buf=save;
return rv;
}
return ioctl(d,request,arg);
}
static long sock_event_subscribe(void (* cb)(), void *arg, int fd, int how)
{
return um_mod_event_subscribe(cb,arg,fd,how);
}
void *viewos_init(char *args)
{
int socktype=AF_INET;
return ht_tab_add(CHECKSOCKET,&socktype,sizeof(int),&s,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 "sockettest init\n");
s.name="sockip";
s.description="socket syscall (AF_INET) are executed server side";
s.ioctlparms=ioctlparms;
s.syscall=(sysfun *)calloc(scmap_scmapsize,sizeof(sysfun));
s.socket=(sysfun *)calloc(scmap_sockmapsize,sizeof(sysfun));
SERVICESOCKET(s, socket, socket);
//SERVICESOCKET(s, socket, mysocket);
SERVICESOCKET(s, bind, bind);
SERVICESOCKET(s, connect, connect);
SERVICESOCKET(s, listen, listen);
SERVICESOCKET(s, accept, accept);
SERVICESOCKET(s, getsockname, getsockname);
SERVICESOCKET(s, getpeername, getpeername);
SERVICESOCKET(s, send, send);
SERVICESOCKET(s, recv, recv);
SERVICESOCKET(s, sendto, sendto);
SERVICESOCKET(s, recvfrom, recvfrom);
SERVICESOCKET(s, shutdown, shutdown);
SERVICESOCKET(s, setsockopt, setsockopt);
SERVICESOCKET(s, getsockopt, getsockopt);
SERVICESOCKET(s, sendmsg, sendmsg);
SERVICESOCKET(s, recvmsg, recvmsg);
//SERVICESYSCALL(s, read, myread);
//SERVICESYSCALL(s, write, mywrite);
SERVICESYSCALL(s, read, read);
SERVICESYSCALL(s, write, write);
SERVICESYSCALL(s, close, close);
#ifdef __NR_fcntl64
SERVICESYSCALL(s, fcntl, fcntl64);
#else
SERVICESYSCALL(s, fcntl, fcntl);
#endif
SERVICESYSCALL(s, ioctl, sockioctl);
s.event_subscribe=sock_event_subscribe;
}
static void
__attribute__ ((destructor))
fini (void)
{
free(s.syscall);
free(s.socket);
printk(KERN_NOTICE "sockettest fini\n");
}
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