diff options
| -rw-r--r-- | src/first_network_device.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/first_network_device.c b/src/first_network_device.c index 5932385..abbc9b0 100644 --- a/src/first_network_device.c +++ b/src/first_network_device.c @@ -50,6 +50,21 @@ static bool sysfs_devtype(char *dest, size_t n, const char *ifnam) { return true; } +static bool is_virtual(const char *ifname) { + char path[1024]; + char *target = NULL; + const char virtual_template[] = "/sys/devices/virtual/"; + + snprintf(path, sizeof(path), "/sys/class/net/%s", ifname); + if ((target = realpath(path, NULL))) { + if (strncmp(virtual_template, target, strlen(virtual_template)) == 0) + return true; + } + free(target); + + return false; +} + static net_type_t iface_type(const char *ifname) { #ifdef __linux__ char devtype[32]; @@ -57,6 +72,7 @@ static net_type_t iface_type(const char *ifname) { if (!sysfs_devtype(devtype, sizeof(devtype), ifname)) return NET_TYPE_OTHER; + /* Default to Ethernet when no devtype is available */ if (!devtype[0]) return NET_TYPE_ETHERNET; @@ -147,6 +163,8 @@ const char *first_eth_interface(const net_type_t type) { iftype = iface_type(addrp->ifa_name); if (iftype != type) continue; + if (is_virtual(addrp->ifa_name)) + continue; interface = strdup(addrp->ifa_name); break; } |