Return EINVAL in case when the incorrect or unsupported

type argument is specified.

Do not map type argument value as its Linux values are
identical to FreeBSD values.

Approved by:	kib (mentor)

2 files changed, 12 insertions, 0 deletions

diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c
index ee7bf18..e99ef84 100644
--- a/sys/compat/linux/linux_socket.c
+++ b/sys/compat/linux/linux_socket.c
@@ -597,6 +597,8 @@ linux_socket(struct thread *td, struct linux_socket_args *args)
 
 	bsd_args.protocol = args->protocol;
 	bsd_args.type = args->type;
+	if (bsd_args.type < 0 || bsd_args.type > LINUX_SOCK_MAX)
+		return (EINVAL);
 	bsd_args.domain = linux_to_bsd_domain(args->domain);
 	if (bsd_args.domain == -1)
 		return (EAFNOSUPPORT);
diff --git a/sys/compat/linux/linux_socket.h b/sys/compat/linux/linux_socket.h
index 311b1524..0730761 100644
--- a/sys/compat/linux/linux_socket.h
+++ b/sys/compat/linux/linux_socket.h
@@ -90,6 +90,16 @@
 #define	LINUX_AF_APPLETALK	5
 #define	LINUX_AF_INET6		10
 
+/* Supported socket types */
+
+#define	LINUX_SOCK_STREAM	1
+#define	LINUX_SOCK_DGRAM	2
+#define	LINUX_SOCK_RAW		3
+#define	LINUX_SOCK_RDM		4
+#define	LINUX_SOCK_SEQPACKET	5
+
+#define	LINUX_SOCK_MAX		LINUX_SOCK_SEQPACKET
+
 struct l_ucred {
 	uint32_t	pid;
 	uint32_t	uid;