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util/qemu-sockets: Enable unix socket support on Windows

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Support for the unix socket has existed both in BSD and Linux for the
longest time, but not on Windows. Since Windows 10 build 17063 [1],
the native support for the unix socket has come to Windows. Starting
this build, two Win32 processes can use the AF_UNIX address family
over Winsock API to communicate with each other.

[1] https://devblogs.microsoft.com/commandline/af_unix-comes-to-windows/

Signed-off-by: Xuzhou Cheng <xuzhou.cheng@windriver.com>
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220802075200.907360-3-bmeng.cn@gmail.com>
This commit is contained in:
Bin Meng 2022-08-02 15:51:58 +08:00 committed by Marc-André Lureau
parent 93fac696d2
commit d409373b9d
3 changed files with 20 additions and 25 deletions
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17
include/sysemu/os-win32.h
View file

@ -30,6 +30,23 @@
#include <windows.h>
#include <ws2tcpip.h>
#ifdef HAVE_AFUNIX_H
#include <afunix.h>
#else
/*
* Fallback definitions of things we need in afunix.h, if not available from
* the used Windows SDK or MinGW headers.
*/
#define UNIX_PATH_MAX 108
typedef struct sockaddr_un {
ADDRESS_FAMILY sun_family;
char sun_path[UNIX_PATH_MAX];
} SOCKADDR_UN, *PSOCKADDR_UN;
#define SIO_AF_UNIX_GETPEERPID _WSAIOR(IOC_VENDOR, 256)
#endif
#ifdef __cplusplus
extern "C" {
#endif

3
meson.build
View file

@ -1890,6 +1890,9 @@ config_host_data.set('HAVE_PTY_H', cc.has_header('pty.h'))
config_host_data.set('HAVE_SYS_DISK_H', cc.has_header('sys/disk.h'))
config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h'))
config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h'))
if targetos == 'windows'
config_host_data.set('HAVE_AFUNIX_H', cc.has_header('afunix.h'))
endif
# has_function
config_host_data.set('CONFIG_ACCEPT4', cc.has_function('accept4'))

25
util/qemu-sockets.c
View file

@ -880,8 +880,6 @@ static int vsock_parse(VsockSocketAddress *addr, const char *str,
}
#endif /* CONFIG_AF_VSOCK */
#ifndef _WIN32
static bool saddr_is_abstract(UnixSocketAddress *saddr)
{
#ifdef CONFIG_LINUX
@ -1054,25 +1052,6 @@ static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp)
return -1;
}
#else
static int unix_listen_saddr(UnixSocketAddress *saddr,
int num,
Error **errp)
{
error_setg(errp, "unix sockets are not available on windows");
errno = ENOTSUP;
return -1;
}
static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp)
{
error_setg(errp, "unix sockets are not available on windows");
errno = ENOTSUP;
return -1;
}
#endif
/* compatibility wrapper */
int unix_listen(const char *str, Error **errp)
{
@ -1335,7 +1314,6 @@ socket_sockaddr_to_address_inet(struct sockaddr_storage *sa,
}
#ifndef WIN32
static SocketAddress *
socket_sockaddr_to_address_unix(struct sockaddr_storage *sa,
socklen_t salen,
@ -1362,7 +1340,6 @@ socket_sockaddr_to_address_unix(struct sockaddr_storage *sa,
addr->u.q_unix.path = g_strndup(su->sun_path, salen);
return addr;
}
#endif /* WIN32 */
#ifdef CONFIG_AF_VSOCK
static SocketAddress *
@ -1394,10 +1371,8 @@ socket_sockaddr_to_address(struct sockaddr_storage *sa,
case AF_INET6:
return socket_sockaddr_to_address_inet(sa, salen, errp);
#ifndef WIN32
case AF_UNIX:
return socket_sockaddr_to_address_unix(sa, salen, errp);
#endif /* WIN32 */
#ifdef CONFIG_AF_VSOCK
case AF_VSOCK: