gwj / at91sam9263 · Commits

Commit 9977c8943a56b06908555ea6d1706142a3c9da4d

Authored by Mark McLoughlin
Committed by Anthony Liguori
1 parent f707726e

Make tcp_chr_read() use recvmsg() 

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>
Inline Side-by-side
Showing 1 changed file with 24 additions and 1 deletions
qemu-char.c
  View file @9977c89
... ... @@ -1907,6 +1907,29 @@ static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
1907 1907 *size = j;
1908 1908 }
1909 1909  
  1910 +#ifndef WIN32
  1911 +static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
  1912 +{
  1913 + TCPCharDriver *s = chr->opaque;
  1914 + struct msghdr msg = { 0, };
  1915 + struct iovec iov[1];
  1916 +
  1917 + iov[0].iov_base = buf;
  1918 + iov[0].iov_len = len;
  1919 +
  1920 + msg.msg_iov = iov;
  1921 + msg.msg_iovlen = 1;
  1922 +
  1923 + return recvmsg(s->fd, &msg, 0);
  1924 +}
  1925 +#else
  1926 +static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
  1927 +{
  1928 + TCPCharDriver *s = chr->opaque;
  1929 + return recv(s->fd, buf, len, 0);
  1930 +}
  1931 +#endif
  1932 +
1910 1933 static void tcp_chr_read(void *opaque)
1911 1934 {
1912 1935 CharDriverState *chr = opaque;
... ... @@ -1919,7 +1942,7 @@ static void tcp_chr_read(void *opaque)
1919 1942 len = sizeof(buf);
1920 1943 if (len > s->max_size)
1921 1944 len = s->max_size;
1922   - size = recv(s->fd, (void *)buf, len, 0);
  1945 + size = tcp_chr_recv(chr, (void *)buf, len);
1923 1946 if (size == 0) {
1924 1947 /* connection closed */
1925 1948 s->connected = 0;
... ...