ws2_32: Return WSAEFAULT from setsockopt() for IP_TTL with zero optlen.

Signed-off-by: Paul Gofman <pgofman@codeweavers.com> Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ws2_32: Return WSAEFAULT from setsockopt() for IP_TTL with zero optlen.
0baf44e3 · Paul Gofman · Alexandre Julliard · 5f9da35a · 0baf44e3
Commit 0baf44e3 authored Mar 08, 2022 by Paul Gofman Committed by Alexandre Julliard Mar 08, 2022
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socket.c dlls/ws2_32/socket.c +5 -0

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--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -3023,6 +3023,11 @@ int WINAPI setsockopt( SOCKET s, int level, int optname, const char *optval, int
            return server_setsockopt( s, IOCTL_AFD_WINE_SET_IP_TOS, optval, optlen );

        case IP_TTL:
+            if (!optlen)
+            {
+                SetLastError( WSAEFAULT );
+                return -1;
+            }
            return server_setsockopt( s, IOCTL_AFD_WINE_SET_IP_TTL, optval, optlen );

        case IP_UNBLOCK_SOURCE: