Re: [Qemu-devel] [PATCH v5 1/4] sockets: introduce set_socket_error()

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On 03/22/2012 05:52 AM, Amos Kong wrote:
> Introduce set_socket_error() to set the errno, use
> WSASetLastError() for win32.
> Sometimes, clean work would rewrite errno in error path,
> we can use this function to restore real errno.
> 
> Signed-off-by: Amos Kong <akong@xxxxxxxxxx>
> ---
>  qemu_socket.h |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/qemu_socket.h b/qemu_socket.h
> index fe4cf6c..a4c5170 100644
> --- a/qemu_socket.h
> +++ b/qemu_socket.h
> @@ -8,6 +8,7 @@
>  #include <ws2tcpip.h>
>  
>  #define socket_error() WSAGetLastError()
> +#define set_socket_error(e) WSASetLastError(e)
>  #undef EINTR
>  #define EWOULDBLOCK WSAEWOULDBLOCK
>  #define EINTR       WSAEINTR
> @@ -26,6 +27,7 @@ int inet_aton(const char *cp, struct in_addr *ia);
>  #include <sys/un.h>
>  
>  #define socket_error() errno
> +#define set_socket_error(e) errno = e

how about creating a function set_errno(int e) and use it in the macro.

Orit
>  #define closesocket(s) close(s)
>  
>  #endif /* !_WIN32 */
> 
> 

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