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sockets: change inet_connect() to support nonblock socket

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Add a bool argument to inet_connect() to assign if set socket
to block/nonblock, and delete original argument 'socktype'
that is unused.
Add a new argument to inet_connect()/inet_connect_opts(),
to pass back connect error by error class.

Retry to connect when -EINTR is got. Connect's successful
for nonblock socket when following errors are got, user
should wait for connecting by select():
  -EINPROGRESS
  -EWOULDBLOCK (win32)
  -WSAEALREADY (win32)

Change nbd, vnc to use new interface.

Signed-off-by: Amos Kong <akong@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Amos Kong 2012-05-11 00:28:16 +08:00 • committed by Anthony Liguori
parent aed3d11df6
commit a6ba35b3be
5 changed files with 44 additions and 11 deletions
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2
qemu-char.c
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@ -2446,7 +2446,7 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
if (is_listen) {
fd = inet_listen_opts(opts, 0);
} else {
fd = inet_connect_opts(opts);
fd = inet_connect_opts(opts, NULL);
}
}
if (fd < 0) {