On Wed, Nov 04, 2015 at 02:38:43PM +0000, Jean-Pierre Ribeauville wrote:
Hi,
I' trying to read datas sent by my KVM host within the Guest.
Host send these datas trough a channel UNIX type , by using AF_UNIX socket stuff.
If i try to retrive the datas by using such type of thing in the Guest :
#define NAME "/dev/virtio-ports/agent"
sock = socket(AF_UNIX, SOCK_STREAM, 0);
12 if (sock < 0) {
13 perror("opening stream socket");
14 exit(1);
15 }
16 server.sun_family = AF_UNIX;
17 strcpy(server.sun_path, NAME);
18 if (bind(sock, (struct sockaddr *) &server, sizeof(struct sockaddr_un))) {
19 perror("binding stream socket");
20 exit(1);
21 }
I got ""binding stream socket Address already in use" when trying to bind the socket .
shouldn't you conect() instead of bind() ? Of course, open() should write as well.
But If I use such kind of thing :
fd = open("/dev/virtio-ports/agent", O_RDWR | O_NONBLOCK);
ssize_t size = read(fd, &rcv_buffer, 100);
if(size >0) printf("Read length(%d) %s\n", size, rcv_buffer);
It works fine.
Is there any chance to be able to use socket stuff on Guest side or is there anything I misunderstand?
Thanks for help.
J.P.
J.P. Ribeauville
P: +33.(0).1.47.17.20.49
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