lucic71
/
i3status
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
i3status/src/first_network_device.c

46 lines
1.3 KiB
C
Raw Normal View History

clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
// vim:ts=4:sw=4:expandtab
support the special interface name _first_ for ethernet/wireless Since we have deterministic device names in Linux, these strings are a much better default in the i3status config than "eth0" and "wlan0" (what we used before).
2014-12-07 14:14:02 +00:00
#include <sys/stat.h>
#include <stdlib.h>
#include <ifaddrs.h>
#include "i3status.h"
const char *first_eth_interface(const net_type_t type) {
clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
static char *interface = NULL;
struct ifaddrs *ifaddr, *addrp;
struct stat stbuf;
static char path[1024];
support the special interface name _first_ for ethernet/wireless Since we have deterministic device names in Linux, these strings are a much better default in the i3status config than "eth0" and "wlan0" (what we used before).
2014-12-07 14:14:02 +00:00
clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
getifaddrs(&ifaddr);
support the special interface name _first_ for ethernet/wireless Since we have deterministic device names in Linux, these strings are a much better default in the i3status config than "eth0" and "wlan0" (what we used before).
2014-12-07 14:14:02 +00:00
clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
if (ifaddr == NULL)
return NULL;
support the special interface name _first_ for ethernet/wireless Since we have deterministic device names in Linux, these strings are a much better default in the i3status config than "eth0" and "wlan0" (what we used before).
2014-12-07 14:14:02 +00:00
clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
free(interface);
interface = NULL;
for (addrp = ifaddr;
addrp != NULL;
addrp = addrp->ifa_next) {
if (strncasecmp("lo", addrp->ifa_name, strlen("lo")) == 0)
continue;
first_eth_interface: ignore MAC addresses, look for IPv4/IPv6 addresses
2015-11-16 21:41:18 +00:00
if (addrp->ifa_addr == NULL)
continue;
// Skip PF_PACKET addresses (MAC addresses), as they are present on any
// ethernet interface.
if (addrp->ifa_addr->sa_family != AF_INET &&
addrp->ifa_addr->sa_family != AF_INET6)
continue;
clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
// Skip this interface if it is a wireless interface.
snprintf(path, sizeof(path), "/sys/class/net/%s/wireless", addrp->ifa_name);
const bool is_wireless = (stat(path, &stbuf) == 0);
if ((is_wireless && type == NET_TYPE_ETHERNET) ||
(!is_wireless && type == NET_TYPE_WIRELESS))
continue;
interface = strdup(addrp->ifa_name);
break;
}
support the special interface name _first_ for ethernet/wireless Since we have deterministic device names in Linux, these strings are a much better default in the i3status config than "eth0" and "wlan0" (what we used before).
2014-12-07 14:14:02 +00:00
clang-format-3.5 -i **/*.[ch], update modeline From here on, we’ll use clang-format to automatically format the source. This has worked well in i3, so we are introducing it for i3status.
2015-03-16 09:00:32 +00:00
freeifaddrs(ifaddr);
return interface;
support the special interface name _first_ for ethernet/wireless Since we have deterministic device names in Linux, these strings are a much better default in the i3status config than "eth0" and "wlan0" (what we used before).
2014-12-07 14:14:02 +00:00
}