From: Bin Meng <bin.meng@windriver.com>

close() is a *nix function. It works on any file descriptor, and
sockets in *nix are an example of a file descriptor.

closesocket() is a Windows-specific function, which works only
specifically with sockets. Sockets on Windows do not use *nix-style
file descriptors, and socket() returns a handle to a kernel object
instead, so it must be closed with closesocket().

In QEMU there is already a logic to handle such platform difference
in os-posix.h and os-win32.h, that:

  * closesocket maps to close on POSIX
  * closesocket maps to a wrapper that calls the real closesocket()
    on Windows

Replace the call to close a socket with closesocket() instead.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
---

(no changes since v1)

 util/qemu-sockets.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
index 13b5b197f9..0e2298278f 100644
--- a/util/qemu-sockets.c
+++ b/util/qemu-sockets.c
@@ -487,7 +487,7 @@ int inet_connect_saddr(InetSocketAddress *saddr, Error **errp)
 
         if (ret < 0) {
             error_setg_errno(errp, errno, "Unable to set KEEPALIVE");
-            close(sock);
+            closesocket(sock);
             return -1;
         }
     }
@@ -1050,7 +1050,7 @@ static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp)
     return sock;
 
  err:
-    close(sock);
+    closesocket(sock);
     return -1;
 }
 
-- 
2.34.1

On Wed, Jul 27, 2022 at 5:28 PM Bin Meng <bmeng.cn@gmail.com> wrote:

> From: Bin Meng <bin.meng@windriver.com>
>
> close() is a *nix function. It works on any file descriptor, and
> sockets in *nix are an example of a file descriptor.
>
> closesocket() is a Windows-specific function, which works only
> specifically with sockets. Sockets on Windows do not use *nix-style
> file descriptors, and socket() returns a handle to a kernel object
> instead, so it must be closed with closesocket().
>
> In QEMU there is already a logic to handle such platform difference
> in os-posix.h and os-win32.h, that:
>
>   * closesocket maps to close on POSIX
>   * closesocket maps to a wrapper that calls the real closesocket()
>     on Windows
>
> Replace the call to close a socket with closesocket() instead.
>
> Signed-off-by: Bin Meng <bin.meng@windriver.com>
>

This is a fix, could go in 7.1. Daniel, do you take it?

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

Thanks

---
>
> (no changes since v1)
>
>  util/qemu-sockets.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
> index 13b5b197f9..0e2298278f 100644
> --- a/util/qemu-sockets.c
> +++ b/util/qemu-sockets.c
> @@ -487,7 +487,7 @@ int inet_connect_saddr(InetSocketAddress *saddr, Error
> **errp)
>
>          if (ret < 0) {
>              error_setg_errno(errp, errno, "Unable to set KEEPALIVE");
> -            close(sock);
> +            closesocket(sock);
>              return -1;
>          }
>      }
> @@ -1050,7 +1050,7 @@ static int unix_connect_saddr(UnixSocketAddress
> *saddr, Error **errp)
>      return sock;
>
>   err:
> -    close(sock);
> +    closesocket(sock);
>      return -1;
>  }
>
> --
> 2.34.1
>
>
>

-- 
Marc-André Lureau