From 37da2899f40661e3e9631e497da8dc59b971cbd0 Mon Sep 17 00:00:00 2001
From: "Charles.Forsyth" <devnull@localhost>
Date: Fri, 22 Dec 2006 17:07:39 +0000
Subject: 20060303a

---
 libbio/bwrite.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 libbio/bwrite.c

(limited to 'libbio/bwrite.c')

diff --git a/libbio/bwrite.c b/libbio/bwrite.c
new file mode 100644
index 00000000..87256fd0
--- /dev/null
+++ b/libbio/bwrite.c
@@ -0,0 +1,38 @@
+#include	"lib9.h"
+#include	<bio.h>
+
+long
+Bwrite(Biobuf *bp, void *ap, long count)
+{
+	long c;
+	uchar *p;
+	int i, n, oc;
+
+	p = ap;
+	c = count;
+	oc = bp->ocount;
+
+	while(c > 0) {
+		n = -oc;
+		if(n > c)
+			n = c;
+		if(n == 0) {
+			if(bp->state != Bwactive)
+				return Beof;
+			i = write(bp->fid, bp->bbuf, bp->bsize);
+			if(i != bp->bsize) {
+				bp->state = Binactive;
+				return Beof;
+			}
+			bp->offset += i;
+			oc = -bp->bsize;
+			continue;
+		}
+		memmove(bp->ebuf+oc, p, n);
+		oc += n;
+		c -= n;
+		p += n;
+	}
+	bp->ocount = oc;
+	return count-c;
+}
-- 
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