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net: ensure "socket" backend uses non-blocking fds 

There are several code paths in net_init_socket() depending on how the
socket is created: file descriptor passing, UDP multicast, TCP, or UDP.
Some of these support both listen and connect.

Not all code paths set the socket to non-blocking.  This patch addresses
the file descriptor passing and UDP cases which were missing
socket_set_nonblock(fd) calls.

I considered moving socket_set_nonblock(fd) to a central location but it
turns out the code paths are different enough to require non-blocking at
different places.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
master
Stefan Hajnoczi 2013-03-27 10:10:44 +01:00 committed by Luiz Capitulino
parent f9e8cacc55
commit fc13fa00ea
1 changed files with 6 additions and 1 deletions
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7
net/socket.c
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@ -674,6 +674,7 @@ static int net_socket_udp_init(NetClientState *peer,
closesocket(fd);
return -1;
}
qemu_set_nonblock(fd);
s = net_socket_fd_init(peer, model, name, fd, 0);
if (!s) {
@ -712,7 +713,11 @@ int net_init_socket(const NetClientOptions *opts, const char *name,
int fd;
fd = monitor_handle_fd_param(cur_mon, sock->fd);
if (fd == -1 || !net_socket_fd_init(peer, "socket", name, fd, 1)) {
if (fd == -1) {
return -1;
}
qemu_set_nonblock(fd);
if (!net_socket_fd_init(peer, "socket", name, fd, 1)) {
return -1;
}
return 0;