From 8aec0abdc638c88c7bc5f4ea5d68b397a80486f1 Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Sat, 5 Oct 2019 15:31:45 +0900
Subject: [PATCH] Add (incomplete) sosetopt() and sogetopt() functions

---
 kernel/core/socket.c | 55 ++++++++++++++++++++++++++++++++++++++++++++
 kernel/core/socket.h |  3 +++
 2 files changed, 58 insertions(+)

diff --git a/kernel/core/socket.c b/kernel/core/socket.c
index 8d05050..35157ea 100644
--- a/kernel/core/socket.c
+++ b/kernel/core/socket.c
@@ -228,3 +228,58 @@ int sofree(int sockfd)
 
 	return(ret_val);
 }
+
+int sosetopt(int sockfd, int opt, const void *data, size_t dlen)
+{
+	struct socket *so;
+	int ret_val;
+
+	/* sanity-check input */
+	if(sockfd < 0 || sockfd >= (sizeof(_sockets) / sizeof(_sockets[0])) ||
+	   !SO_VALID(opt) || !data || !dlen) {
+		ret_val = -EINVAL;
+		goto gtfo;
+	}
+
+	so = _sockets[sockfd];
+
+	/* make sure sockfd refers to a valid socket */
+	if(!so) {
+		ret_val = -EBADF;
+		goto gtfo;
+	}
+
+	switch(opt) {
+	case SO_SNDBUF:
+	case SO_RCVBUF:
+	case SO_SNDLOWAT:
+	case SO_RCVLOWAT:
+	case SO_SNDTIMEO:
+	case SO_RCVTIMEO:
+	case SO_DEBUG:
+	case SO_REUSEADDR:
+	case SO_KEEPALIVE:
+	case SO_DONTROUTE:
+	case SO_BROADCAST:
+	case SO_USELOOPBACK:
+	case SO_OOBINLINE:
+	case SO_LINGER:
+	case SO_ERROR:
+	case SO_TYPE:
+		ret_val = -ENOSYS;
+		break;
+
+	default:
+		/* *should* not be reachable */
+		ret_val = -EINVAL;
+		break;
+	}
+
+gtfo:
+	return(ret_val);
+}
+
+int sogetopt(int sockfd, int opt, void *data, size_t *dlen)
+{
+	return(-ENOSYS);
+}
diff --git a/kernel/core/socket.h b/kernel/core/socket.h
index a5eed13..fb68146 100644
--- a/kernel/core/socket.h
+++ b/kernel/core/socket.h
@@ -24,4 +24,7 @@ int socreate(int, int, int);
 int soclose(int);
 int sofree(int);
 
+int sosetopt(int, int, const void*, size_t);
+int sogetopt(int, int, void*, size_t*);
+
 #endif /* __SOCKET_H */
-- 
2.47.3