From 0d0dfe085dd5d1ebb77d04d0513811d0122ee3cd Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Mon, 8 May 1995 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1995-05-08

---
 pc/devvga.c   | 9 ++++++++-
 port/devmnt.c | 7 +++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/pc/devvga.c b/pc/devvga.c
index 8ada001bd678096dd29f1f88caa78650861c2c56..542130d735cf20f32df4c46ffb2c05ecfc5e205d 100644
--- a/pc/devvga.c
+++ b/pc/devvga.c
@@ -99,12 +99,14 @@ enum
 	Qvgaiow		= 2,
 	Qvgaiol		= 3,
 	Qvgactl		= 4,
-	Nvga		= Qvgactl,
+	Qvgaiosl	= 5,
+	Nvga		= Qvgaiosl,
 };
 Dirtab vgadir[]={
 	"vgaiob",	{ Qvgaiob },	0,	0666,
 	"vgaiow",	{ Qvgaiow },	0,	0666,
 	"vgaiol",	{ Qvgaiol },	0,	0666,
+	"vgaiosl",	{ Qvgaiosl },	0,	0666,	/* Debugging: philw */
 	"vgactl",	{ Qvgactl },	0,	0666,
 };
 
@@ -413,6 +415,11 @@ vgawrite(Chan *c, void *buf, long n, ulong offset)
 		for (lp = buf, port=offset; port<offset+n; port+=4)
 			outl(port, *lp++);
 		return n*4;
+	case Qvgaiosl:
+		if((n & 03) || (offset & 03))
+			error(Ebadarg);
+		outsl(offset, buf, n/4);
+		return n;
 	}
 	error(Eperm);
 	return 0;
diff --git a/port/devmnt.c b/port/devmnt.c
index a752fb7c8b574b5c126cad863b865b571146e73e..d3d9ef53ca35e4e4a8c9c02f09dbed5ba969002d 100644
--- a/port/devmnt.c
+++ b/port/devmnt.c
@@ -139,8 +139,11 @@ mntattach(char *muxattach)
 	m->rip = 0;
 	m->c = c;
 	m->c->flag |= CMSG;
-	if(strcmp(bogus.spec, "16k") == 0) {
-		m->blocksize = 16*1024;
+	if(strncmp(bogus.spec, "mntblk=", 7) == 0) {
+		m->blocksize = strtoul(bogus.spec+7, 0, 0);
+		if(m->blocksize > MAXFDATA)
+			m->blocksize = MAXFDATA;
+		print("mount blk %d\n", m->blocksize);
 		bogus.spec = "";
 	}
 	else