On 12.08.2022 14:01, dragon wrote:
Hi,
Thans for your attention.
I had a problem doing porting the network part。I want to get a list of
network devices that can be implemented on Linux with an ioctl interface. A set
of ioctl interfaces is also provided on Windows called WSAIoctl with cmd
SIO_GET_INTERFACE_LIST。The WSAIoctl interface is also encapsulated in cygwin
and placed in /usr/include/w32api/, libs place in /usr/lib/w32api/ws2_32 .
mixing Posix and W32 API is seldom a good idea.
The attached code provides the full list of Network interface and
some details as
internal_name: {E9617ED6-8C03-4C53-AA3F-4FD6DBC596D5}
flags: AF_INET6 up multicast
address: fe80::9cbb:5d97:6ef:565%22
friendly_name: LAN-Verbindung* 2
feel free to modify it for your purpose
Regards
Marco
/* #define _GNU_SOURCE * To get defns of NI_MAXSERV and NI_MAXHOST */
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#include <ifaddrs.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/ioctl.h>
#include <net/if.h>
void print_flags(unsigned int flags)
{
const char* sep = "", *sp = " ";
if (flags & IFF_UP) {
printf("%sup", sep);
sep = sp;
}
if (flags & IFF_BROADCAST) {
printf("%sbroadcast", sep);
sep = sp;
}
if (flags & IFF_LOOPBACK) {
printf("%sloopback", sep);
sep = sp;
}
if (flags & IFF_NOTRAILERS) {
printf("%snotrailers", sep);
sep = sp;
}
if (flags & IFF_RUNNING) {
printf("%srunning", sep);
sep = sp;
}
if (flags & IFF_PROMISC) {
printf("%spromisc", sep);
sep = sp;
}
if (flags & IFF_MULTICAST) {
printf("%smulticast", sep);
sep = sp;
}
}
int main(int argc, char *argv[])
{
struct ifaddrs *ifaddr, *ifa;
int family, s, n;
char host[NI_MAXHOST];
struct ifreq ifr;
struct ifreq_frndlyname iff;
struct ifreq_frndlyname * iffp;
struct ifaddrs_hwdata * ifhwdata;
if (getifaddrs(&ifaddr) == -1) {
perror("getifaddrs");
exit(EXIT_FAILURE);
}
/* Walk through linked list, maintaining head pointer so we
can free list later */
for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
if (ifa->ifa_addr == NULL)
continue;
family = ifa->ifa_addr->sa_family;
/* Display interface name and family (including symbolic
form of the latter for the common families) */
printf("internal_name: \t%s\n",ifa->ifa_name);
printf(" flags: \t%s ",
(family == AF_INET) ? "AF_INET " :
(family == AF_INET6) ? "AF_INET6" : "unknown ");
print_flags(ifa->ifa_flags);
printf("\n");
/* For an AF_INET* interface address, display the address */
if (family == AF_INET || family == AF_INET6) {
s = getnameinfo(ifa->ifa_addr,
(family == AF_INET) ? sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6),
host, NI_MAXHOST,
NULL, 0, NI_NUMERICHOST);
if (s != 0) {
printf("getnameinfo() failed: %s\n", gai_strerror(s));
exit(EXIT_FAILURE);
}
printf(" address:\t%s\n", host);
ifhwdata=ifa->ifa_data;
iffp=&(ifhwdata->ifa_frndlyname);
printf(" friendly_name:\t%s\n\n", iffp->ifrf_friendlyname);
}
}
freeifaddrs(ifaddr);
exit(EXIT_SUCCESS);
}
--
Problem reports: https://cygwin.com/problems.html
FAQ: https://cygwin.com/faq/
Documentation: https://cygwin.com/docs.html
Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
