void
list_interfaces(const char* name)
{
if (name != NULL) {
list_interface(name);
return;
}
// get a list of all interfaces
BNetworkRoster& roster = BNetworkRoster::Default();
BNetworkInterface interface;
uint32 cookie = 0;
while (roster.GetNextInterface(&cookie, interface) == B_OK) {
list_interface(interface.Name());
}
}
void
list_interfaces(int socket, const char* name)
{
if (name != NULL) {
list_interface(socket, name);
return;
}
// get a list of all interfaces
ifconf config;
config.ifc_len = sizeof(config.ifc_value);
if (ioctl(socket, SIOCGIFCOUNT, &config, sizeof(struct ifconf)) < 0)
return;
uint32 count = (uint32)config.ifc_value;
if (count == 0) {
fprintf(stderr, "%s: There are no interfaces yet!\n", kProgramName);
return;
}
void *buffer = malloc(count * sizeof(struct ifreq));
if (buffer == NULL) {
fprintf(stderr, "%s: Out of memory.\n", kProgramName);
return;
}
config.ifc_len = count * sizeof(struct ifreq);
config.ifc_buf = buffer;
if (ioctl(socket, SIOCGIFCONF, &config, sizeof(struct ifconf)) < 0)
return;
ifreq *interface = (ifreq *)buffer;
for (uint32 i = 0; i < count; i++) {
list_interface(socket, interface->ifr_name);
interface = (ifreq *)((addr_t)interface + IF_NAMESIZE + interface->ifr_addr.sa_len);
}
free(buffer);
}