POSIX-2024: support for MSG_CMSG_CLOEXEC and MSG_CMSG_CLOFORK

Change-Id: I55551860fb7dac5d0c11a6d4201502fff9ab2d13
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9332
Reviewed-by: waddlesplash <[email protected]>
Reviewed-by: Jérôme Duval <[email protected]>
Tested-by: Commit checker robot <[email protected]>

headers/posix/sys/socket.h

@@ -126,6 +126,8 @@ struct msghdr {
 #define MSG_MCAST		0x0200	/* this message rec'd as multicast */
 #define	MSG_EOF			0x0400	/* data completes connection */
 #define MSG_NOSIGNAL	0x0800	/* don't raise SIGPIPE if socket is closed */
+#define MSG_CMSG_CLOEXEC	0x1000	/* set FD_CLOEXEC flag on FDs created via SCM_RIGHTS */
+#define MSG_CMSG_CLOFORK	0x2000	/* set FD_CLOFORK flag on FDs created via SCM_RIGHTS */
 
 struct cmsghdr {
 	socklen_t	cmsg_len;

headers/private/net/net_protocol.h

@@ -102,7 +102,7 @@ struct net_protocol_module_info {
 					ancillary_data_container* container, const cmsghdr* header);
 	ssize_t		(*process_ancillary_data)(net_protocol* self,
 					const ancillary_data_container* container,
-					void* buffer, size_t bufferSize);
+					void* buffer, size_t bufferSize, int flags);
 	ssize_t		(*process_ancillary_data_no_container)(net_protocol* self,
 					net_buffer* buffer, void* data, size_t bufferSize);