diff -ur --unidirectional-new-file skipsrc-1.0.orig/skip/freebsd/skip_os.h work.new/skip/freebsd/skip_os.h
--- skipsrc-1.0.orig/skip/freebsd/skip_os.h	Fri Oct 25 13:12:43 1996
+++ work.new/skip/freebsd/skip_os.h	Tue Mar  9 19:16:28 1999
@@ -54,7 +54,6 @@
 #ifndef KERNEL
 #include <stdio.h>
 #include <string.h>
-#include <strings.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
@@ -69,6 +68,12 @@
 #include <dirent.h>
 #endif
 
+#include <osreldate.h>
+
+#ifdef KERNEL
+#include <sys/cdefs.h>
+#endif
+
 #include <sys/types.h>
 #include <sys/errno.h>
 #include <sys/time.h>
@@ -77,16 +82,19 @@
 #include <sys/malloc.h>
 #include <sys/stat.h>
 #include <sys/socket.h>
+#include <sys/socketvar.h> 
 #include <sys/syslog.h>
 #include <sys/param.h>
 #include <sys/uio.h>
 #include <sys/file.h>
 #include <sys/sockio.h>
 #include <sys/wait.h>
+#include <sys/fcntl.h>
 
 #ifndef  __cplusplus
 #include <machine/cpu.h>
 #include <net/if.h>
+#include <net/if_var.h>
 #include <netinet/in_systm.h>
 #endif
 #include <netinet/in.h>
@@ -94,8 +102,9 @@
 #include <netinet/ip.h>
 #include <netinet/udp.h>
 #include <netinet/in_var.h>
-#include <arpa/inet.h>
+#include <netinet/ip_var.h>
 #endif
+#include <arpa/inet.h>
 
 /* 
  * Basic required types and constants
@@ -116,6 +125,7 @@
 #include <sys/sysent.h>
 #include <sys/exec.h>
 #include <sys/lkm.h>
+#include <sys/sysproto.h>
 #include <sys/protosw.h>
 #include <net/route.h>
 #include <sys/kernel.h>
@@ -123,19 +133,34 @@
 #include <net/netisr.h>
 #include <sys/proc.h>
 #include <sys/device.h>
+#include <sys/libkern.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/poll.h>
 
 #define	PANIC(s)		panic(s)
 
 /*
+ * SKIP malloc type
+ */
+MALLOC_DECLARE(M_SKIP);
+
+/*
  * 4.x memory management macros
  */
-#define	SYSMEM_ALLOC(size)	malloc((u_long)size, M_PCB, M_NOWAIT) 
-#define	SYSMEM_FREE(m, n)	free(m, M_PCB)
-#define	BCOPY(s, d, n)		bcopy((caddr_t) s, (caddr_t) d, n)
-#define	BZERO(s, n)		bzero((caddr_t) s, n)
-#define	BCMP(s, d, n)		bcmp((caddr_t) s, (caddr_t) d, n)
+#define	SYSMEM_ALLOC(size)	malloc((u_long)size, M_SKIP, M_NOWAIT) 
+#define	SYSMEM_FREE(m, n)	free(m, M_SKIP)
 #define	STATIC			static
 
+/*
+ * The kernel doesn't have memcpy() or memcmp(), but gcc will inline them
+ */
+#ifdef KERNEL
+extern int	memcmp(const void *, const void *, size_t);
+#endif
+#define	BCOPY(s, d, n)		memcpy((caddr_t) (d), (caddr_t) (s), n)
+#define	BCMP(s, d, n)		memcmp((caddr_t) (d), (caddr_t) (s), n)
+#define	BZERO(s, n)		bzero((caddr_t) (s), n)
 
 #define ALIGNED(x)		(((unsigned int)(x)&(skip_alignment - 1)) == 0)
 
@@ -182,7 +207,7 @@
 /*
  * 4.x timing defines
  */
-#define SKIP_ES_CURRENTTIME	(time.tv_sec)
+#define SKIP_ES_CURRENTTIME	((long)time_second)
 #define SKIP_ES_DELTATIME(then)	(SKIP_ES_CURRENTTIME - then)
 
 /*
@@ -204,27 +229,6 @@
 	len = IPHLEN(ip); \
 }
 
-/*
- * ANSI prototypes for system routines
- */
-extern int			splimp();
-extern int			splnet();
-extern void			splx(int);
-extern void			m_freem(struct mbuf *);
-extern void			panic(const char *, ...);
-extern int			tsleep(void *, int, char *, int);
-extern void			wakeup(void *);
-extern int			uiomove(caddr_t, int, struct uio *);
-extern int     			copyin(void *, void *, u_int );
-extern int			copyout(void *, void *, u_int);
-extern int			mclget(struct mbuf *);
-extern int			m_cpytoc(struct mbuf *, int, int, caddr_t);
-
-extern void 			log(int, const char *, ...);
-
-extern char			*strncpy(char *, const char *, size_t);
-
-extern void			printf(const char *, ...);
 #else /* KERNEL */
 
 /*
@@ -251,37 +255,12 @@
 #endif
 #define	STATIC
 
-/*
- * ANSI prototypes for C library routines and syscalls
- */
-extern int			gethostname(char *, int);
-extern int			fprintf(FILE *, const char *, ...);
-extern int			fflush(FILE *);
-extern int			fgetc(FILE *);
-extern int			fseek(FILE *, long, int);
-extern size_t			fread(void *, size_t, size_t, FILE *);
-extern int			fclose(FILE *);
-extern int			socket(int, int, int);
-extern int			ioctl(int, int, ...);
-extern int			pclose(FILE *);
-/*extern int			getrlimit(int, struct rlimit *); */
-extern void			perror(const char *);
-extern time_t			time(time_t *);
-extern int			getopt(int, char * const *, const char *);
-extern int			sscanf(const char *, const char *, ...);
-
 #endif /* KERNEL */
 
-/* XXX Bad IPPROTO_ENCAP define  ? */
-#ifdef IPPROTO_ENCAP
-#undef IPPROTO_ENCAP
-#endif
-#define IPPROTO_ENCAP		4
-
 /* SKIP specific */
 
-#define SKIP_DIR		"/etc/skip/"
-#define SKIP_BIN		"/usr/skip/bin"
+#define SKIP_DIR		"@@PREFIX@@/etc/skip/"
+#define SKIP_BIN		"@@PREFIX@@/bin"
 #define KEYMGR			"/dev/skip_key"
 
 /*
@@ -306,12 +285,6 @@
 /* General purpose */
 
 typedef unsigned char byte;
-
-#if 0
-extern void			bcopy(void *, void *, int);
-extern void			bzero(void *, int);
-extern int			bcmp(void *, void *, int);
-#endif
 
 #define	SKIP_IFCMP(if1, if2)    strcmp(if1, if2)