net: sockets: Add SO_ERROR socket option to SOL_SOCKET level

Return the last socket error to user. Signed-off-by: Jukka Rissanen <[email protected]>
phan-uy-vu · Oct 24, 2023 · b864880 · b864880
1 parent fd1c226
commit b864880
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/subsys/net/lib/sockets/sockets.c b/subsys/net/lib/sockets/sockets.c
@@ -1938,6 +1938,17 @@ int zsock_getsockopt_ctx(struct net_context *ctx, int level, int optname,
 	switch (level) {
 	case SOL_SOCKET:
 		switch (optname) {
+		case SO_ERROR: {
+			if (*optlen != sizeof(int)) {
+				errno = EINVAL;
+				return -1;
+			}
+
+			*(int *)optval = POINTER_TO_INT(ctx->user_data);
+
+			return 0;
+		}
+
 		case SO_TYPE: {
 			int type = (int)net_context_get_type(ctx);