/* Return the list of devices in the format provided by SIOCGIFCONF
in IFR, but don't return more then AMOUNT bytes. If AMOUNT is
negative, there is no limit. */
error_t
S_pfinet_siocgifconf (io_t port,
vm_size_t amount,
char **ifr,
mach_msg_type_number_t *len)
{
error_t err = 0;
struct ifconf ifc;
pthread_mutex_lock (&global_lock);
if (amount == (vm_size_t) -1)
{
/* Get the needed buffer length. */
ifc.ifc_buf = NULL;
ifc.ifc_len = 0;
err = dev_ifconf ((char *) &ifc);
if (err)
{
pthread_mutex_unlock (&global_lock);
return -err;
}
amount = ifc.ifc_len;
}
else
ifc.ifc_len = amount;
if (amount > 0)
{
/* Possibly allocate a new buffer. */
if (*len < amount)
ifc.ifc_buf = (char *) mmap (0, amount, PROT_READ|PROT_WRITE,
MAP_ANON, 0, 0);
else
ifc.ifc_buf = *ifr;
err = dev_ifconf ((char *) &ifc);
}
if (err)
{
*len = 0;
if (ifc.ifc_buf != *ifr)
munmap (ifc.ifc_buf, amount);
}
else
{
*len = ifc.ifc_len;
*ifr = ifc.ifc_buf;
}
pthread_mutex_unlock (&global_lock);
return err;
}
int dev_ioctl(unsigned int cmd, void *arg)
{
switch(cmd)
{
case SIOCGIFCONF:
(void) dev_ifconf((char *) arg);
return 0;
/*
* Ioctl calls that can be done by all.
*/
case SIOCGIFFLAGS:
case SIOCGIFADDR:
case SIOCGIFDSTADDR:
case SIOCGIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCGIFMETRIC:
case SIOCGIFMTU:
case SIOCGIFMEM:
case SIOCGIFHWADDR:
case SIOCSIFHWADDR:
case OLD_SIOCGIFHWADDR:
case SIOCGIFSLAVE:
case SIOCGIFMAP:
return dev_ifsioc(arg, cmd);
/*
* Ioctl calls requiring the power of a superuser
*/
case SIOCSIFFLAGS:
case SIOCSIFADDR:
case SIOCSIFDSTADDR:
case SIOCSIFBRDADDR:
case SIOCSIFNETMASK:
case SIOCSIFMETRIC:
case SIOCSIFMTU:
case SIOCSIFMEM:
case SIOCSIFMAP:
case SIOCSIFSLAVE:
case SIOCADDMULTI:
case SIOCDELMULTI:
if (!suser())
return -EPERM;
return dev_ifsioc(arg, cmd);
case SIOCSIFLINK:
return -EINVAL;
/*
* Unknown or private ioctl.
*/
default:
if((cmd >= SIOCDEVPRIVATE) &&
(cmd <= (SIOCDEVPRIVATE + 15))) {
return dev_ifsioc(arg, cmd);
}
return -EINVAL;
}
}
int dev_ioctl(unsigned int cmd, void *arg)
{
switch(cmd)
{
/*
* The old old setup ioctl. Even its name and this entry will soon be
* just so much ionization on a backup tape.
*/
case SIOCGIFCONF:
(void) dev_ifconf((char *) arg);
return 0;
/*
* Ioctl calls that can be done by all.
*/
case SIOCGIFFLAGS:
case SIOCGIFADDR:
case SIOCGIFDSTADDR:
case SIOCGIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCGIFMETRIC:
case SIOCGIFMTU:
case SIOCGIFMEM:
case SIOCGIFHWADDR:
case SIOCSIFHWADDR:
case OLD_SIOCGIFHWADDR:
case SIOCGIFSLAVE:
case SIOCGIFMAP:
return dev_ifsioc(arg, cmd);
/*
* Ioctl calls requiring the power of a superuser
*/
case SIOCSIFFLAGS:
case SIOCSIFADDR:
case SIOCSIFDSTADDR:
case SIOCSIFBRDADDR:
case SIOCSIFNETMASK:
case SIOCSIFMETRIC:
case SIOCSIFMTU:
case SIOCSIFMEM:
case SIOCSIFMAP:
case SIOCSIFSLAVE:
case SIOCDEVPRIVATE:
if (!suser())
return -EPERM;
return dev_ifsioc(arg, cmd);
case SIOCSIFLINK:
return -EINVAL;
/*
* Unknown ioctl.
*/
default:
return -EINVAL;
}
}
