qemu-coroutine-io: fix for Win32

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/qemu-coroutine-io.c b/qemu-coroutine-io.c
index 054ca70627..d4049260da 100644
--- a/qemu-coroutine-io.c
+++ b/qemu-coroutine-io.c
@@ -34,13 +34,15 @@ qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
 {
     size_t done = 0;
     ssize_t ret;
+    int err;
     while (done < bytes) {
         ret = iov_send_recv(sockfd, iov, iov_cnt,
                             offset + done, bytes - done, do_send);
         if (ret > 0) {
             done += ret;
         } else if (ret < 0) {
-            if (errno == EAGAIN) {
+            err = socket_error();
+            if (err == EAGAIN || err == EWOULDBLOCK) {
                 qemu_coroutine_yield();
             } else if (done == 0) {
                 return -1;