no need for the nix kernel to be compatable with pre-9p2000.

- erik

Reference: /n/patches.lsub.org/patch/noold9p
Date: Thu Jun 21 08:27:04 CES 2012
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/boot/boot.c	Sat May 26 12:16:43 2012
+++ /sys/src/nix/boot/boot.c	Thu Jun 21 07:28:42 2012
@@ -46,12 +46,12 @@
 	bind("#ec", "/env", MREPL);
 	bind("#e", "/env", MBEFORE|MCREATE);
 	bind("#s", "/srv", MREPL|MCREATE);
-#ifdef DEBUG
-	print("argc=%d\n", argc);
-	for(fd = 0; fd < argc; fd++)
-		print("%#p %s ", argv[fd], argv[fd]);
-	print("\n");
-#endif DEBUG
+	if(0){
+		print("argc=%d\n", argc);
+		for(fd = 0; fd < argc; fd++)
+			print("%#p %s ", argv[fd], argv[fd]);
+		print("\n");
+	}
 
 	ARGBEGIN{
 	case 'k':
@@ -107,8 +107,6 @@
 	fd = (*mp->connect)();
 	if(fd < 0)
 		fatal("can't connect to file server");
-	if(getenv("srvold9p"))
-		fd = old9p(fd);
 	if(!islocal && !ishybrid){
 		if(cfs)
 			fd = (*cfs)(fd);
@@ -280,33 +278,6 @@
 	if(write(fd, "start", 5) <= 0)
 		warning("starting swap kproc");
 	close(fd);
-}
-
-int
-old9p(int fd)
-{
-	int p[2];
-
-	if(pipe(p) < 0)
-		fatal("pipe");
-
-	print("srvold9p...");
-	switch(fork()) {
-	case -1:
-		fatal("rfork srvold9p");
-	case 0:
-		dup(fd, 1);
-		close(fd);
-		dup(p[0], 0);
-		close(p[0]);
-		close(p[1]);
-		execl("/srvold9p", "srvold9p", "-s", 0);
-		fatal("exec srvold9p");
-	default:
-		close(fd);
-		close(p[0]);
-	}
-	return p[1];
 }
 
 static void
--- /sys/src/nix/boot/boot.h	Sat May 26 12:16:43 2012
+++ /sys/src/nix/boot/boot.h	Thu Jun 21 07:31:13 2012
@@ -49,7 +49,6 @@
 extern int	writefile(char*, char*, int);
 extern void	boot(int, char **);
 extern void	doauthenticate(int, Method*);
-extern int		old9p(int);
 extern int	parsefields(char*, char**, int, char*);
 
 /* methods */