[klibc] kinit cmdline handling change

[Aaron Griffin]

The following patch swaps the command line handling of kinit.  It
seems apparent that, if one were to call kinit like so:
   kinit root=/foo/bar
They would be attempting to override the /proc/cmdline.  As it stands,
kinit parses the /proc/cmdline *first*, meaning the above does not
work.

Just for a simple use case:
User A has an encrypted root device, root=/dev/hda3
Some init scripts detect this, and set up the dev-mapper mapping, as
/dev/mapper/cryptoroot.

The scripts then need a way to replace the root parameter, so that
kinit will load off the cryptoroot device, instead of the encrypted
volume.  As it stands there is no way to do this (/proc/cmdline is
readonly).


--- usr/kinit/kinit.c	2006-05-01 17:26:58.000000000 -0500
+++ usr/kinit/kinit.c	2006-05-05 11:00:58.000000000 -0500
@@ -76,6 +76,12 @@
 	if ( cmdv )
 		cmdv[0] = argv[0];

+	for (a = 1; a < argc && v < vmax; a++) {
+		if ( cmdv )
+			cmdv[v] = argv[a];
+		v++;
+	}
+
 	while (i && *i && v < vmax) {
 		if ((*i == ' ' || *i == '\t') && !was_space) {
 			if ( cmdv )
@@ -90,11 +96,6 @@
 		i++;
 	}

-	for (a = 1; a < argc && v < vmax; a++) {
-		if ( cmdv )
-			cmdv[v] = argv[a];
-		v++;
-	}

 	if ( cmdv )
 		cmdv[v] = NULL;