sockets: MSG_WAITALL support

kernel-src/include/kernel/abi.h

@@ -89,6 +89,7 @@ typedef struct {
 #define SOCK_RAW 3
 
 #define MSG_PEEK 2
+#define MSG_WAITALL 0x100
 #define MSG_NOSIGNAL 0x4000
 
 #define SO_BROADCAST 6

kernel-src/include/kernel/sock.h

@@ -30,6 +30,7 @@ typedef struct {
 } sockaddr_t;
 
 #define SOCKET_RECV_FLAGS_PEEK 0x8000000000000000l
+#define SOCKET_RECV_FLAGS_WAITALL 0x4000000000000000l
 #define SOCKET_SEND_FLAGS_NOSIGNAL 0x8000000000000000l
 typedef struct socketops_t {
 	int (*bind)(socket_t *socket, sockaddr_t *addr);