Zebediah Figura : server: Introduce IOCTL_AFD_WINE_SET_SO_SNDBUF.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: a0bb5564ebcca64b0b82d171ea1fea6731603ff4
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=a0bb5564ebcca64b0b82d171ea1fea6731603ff4

Author: Zebediah Figura <z.figura12 at gmail.com>
Date:   Tue Jun 29 23:25:39 2021 -0500

server: Introduce IOCTL_AFD_WINE_SET_SO_SNDBUF.

Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 include/wine/afd.h |  1 +
 server/sock.c      | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/include/wine/afd.h b/include/wine/afd.h
index d522b8a289f..ddf780500b7 100644
--- a/include/wine/afd.h
+++ b/include/wine/afd.h
@@ -175,6 +175,7 @@ struct afd_get_events_params
 #define IOCTL_AFD_WINE_GET_SO_RCVTIMEO      CTL_CODE(FILE_DEVICE_NETWORK, 232, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define IOCTL_AFD_WINE_GET_SO_REUSEADDR     CTL_CODE(FILE_DEVICE_NETWORK, 233, METHOD_BUFFERED, FILE_ANY_ACCESS)
 #define IOCTL_AFD_WINE_SET_SO_REUSEADDR     CTL_CODE(FILE_DEVICE_NETWORK, 234, METHOD_BUFFERED, FILE_ANY_ACCESS)
+#define IOCTL_AFD_WINE_SET_SO_SNDBUF        CTL_CODE(FILE_DEVICE_NETWORK, 235, METHOD_BUFFERED, FILE_ANY_ACCESS)
 
 struct afd_create_params
 {
diff --git a/server/sock.c b/server/sock.c
index 94dbafe44ee..bcbf3d245be 100644
--- a/server/sock.c
+++ b/server/sock.c
@@ -2650,6 +2650,30 @@ static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
         return 0;
     }
 
+    case IOCTL_AFD_WINE_SET_SO_SNDBUF:
+    {
+        DWORD sndbuf;
+
+        if (get_req_data_size() < sizeof(sndbuf))
+        {
+            set_error( STATUS_BUFFER_TOO_SMALL );
+            return 0;
+        }
+        sndbuf = *(DWORD *)get_req_data();
+
+#ifdef __APPLE__
+        if (!sndbuf)
+        {
+            /* setsockopt fails if a zero value is passed */
+            return 0;
+        }
+#endif
+
+        if (setsockopt( unix_fd, SOL_SOCKET, SO_SNDBUF, (char *)&sndbuf, sizeof(sndbuf) ) < 0)
+            set_error( sock_get_ntstatus( errno ) );
+        return 0;
+    }
+
     default:
         set_error( STATUS_NOT_SUPPORTED );
         return 0;