Failed to get interface list while using ioctl (WSAIoctl) compiled by cygwin

dragon malongfei1230@163.com
Fri Aug 12 12:01:37 GMT 2022


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 . 
 The code implemented by this interface can work correctly after compilation in MinGW and MSVC environments. But the error code of 10045 is returned after cygwin compiles. I have tested on different win10 hosts with different cygwin1.dll, but it still returned 10045(not supported).
Cygwin winsup/cygwin/fhandler/socket_inet.cc also called WSAIoctl,it should workable, I don't understand why return error. 
I am new to cygwin,locating the issue was a bit difficult for me and hope to be able to get your help and response. 
 Thank you very much
The system environment and test code is as follows:
 host: windows 10 (17134)
 cygwin version: 3.3.5
 gcc version: 11.3.0
gcc cmd: gcc -C test.c -o test.exe -lws2_32
minGw cmd: x86_64-w64-mingw32-gcc test.c -o test.exe -lws2_32
test code is very simple, just like this:
#include <winsock2.h>
#include <ws2tcpip.h>
int main (int argc, char *argv[]){
 int s = SOCKET_ERROR;
 INTERFACE_INFO IOInfo[16];
 int ByteRet = 0;
 WSADATA wsa;
 int err = 0;
 
 if (WSAStartup (MAKEWORD(2,2), &wsa) != 0) {
 return -1;
 }
 s = WSASocket (AF_INET, SOCK_DGRAM, IPPROTO_IP, 0, 0, 0);
 if (s == SOCKET_ERROR){
 return -1;
 }
 err = WSAIoctl (s, SIO_GET_INTERFACE_LIST, 0 ,0 ,&IOInfo, sizeof (IOInfo), &ByteRet, 0 ,0);
 if (err != 0) {
 err = WSAGetLastError ();
 printf ("err:%d\r\n", err);
 return -err;
 }
 return 0;
}


More information about the Cygwin mailing list

AltStyle によって変換されたページ (->オリジナル) /