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Make tcp_chr_read() use recvmsg()

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Split out tcp_chr_recv() out of tcp_chr_read() and implement it on
non-win32 using recvmsg(). This is needed for a subsequent patch
which implements SCM_RIGHTS support.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Mark McLoughlin 2009-07-22 09:11:38 +01:00 committed by Anthony Liguori
parent f707726e8d
commit 9977c8943a
1 changed files with 24 additions and 1 deletions
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25
qemu-char.c
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@ -1907,6 +1907,29 @@ static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
*size = j;
}
#ifndef WIN32
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
{
TCPCharDriver *s = chr->opaque;
struct msghdr msg = { 0, };
struct iovec iov[1];
iov[0].iov_base = buf;
iov[0].iov_len = len;
msg.msg_iov = iov;
msg.msg_iovlen = 1;
return recvmsg(s->fd, &msg, 0);
}
#else
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
{
TCPCharDriver *s = chr->opaque;
return recv(s->fd, buf, len, 0);
}
#endif
static void tcp_chr_read(void *opaque)
{
CharDriverState *chr = opaque;
@ -1919,7 +1942,7 @@ static void tcp_chr_read(void *opaque)
len = sizeof(buf);
if (len > s->max_size)
len = s->max_size;
size = recv(s->fd, (void *)buf, len, 0);
size = tcp_chr_recv(chr, (void *)buf, len);
if (size == 0) {
/* connection closed */
s->connected = 0;