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Subject: [PATCH 6 of 8] mv: use iounit for reads
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Date: Sun, 23 Aug 2015 16:49:16 -0700
From: mischief <mischief@offblast.org>
To: 9front@9front.org

# HG changeset patch
# User mischief <mischief@offblast.org>
# Date 1440366687 25200
#      Sun Aug 23 14:51:27 2015 -0700
# Node ID 8a7a4824b69f9c20955f3b96a01c142801f5af1f
# Parent  b6676a7790ca84598ccc4e66856339710ab9b544
mv: use iounit for reads

diff -r b6676a7790ca -r 8a7a4824b69f sys/src/cmd/mv.c
--- a/sys/src/cmd/mv.c	Sun Aug 23 14:51:27 2015 -0700
+++ b/sys/src/cmd/mv.c	Sun Aug 23 14:51:27 2015 -0700
@@ -167,9 +167,14 @@
 int
 copy1(int fdf, int fdt, char *from, char *to)
 {
-	char buf[8192];
+	int buflen;
+	char *buf;
 	long n, n1;
 
+	buflen = iounit(fdf);
+	if(buflen <= 0)
+		buflen = IOUNIT;
+
 	while ((n = read(fdf, buf, sizeof buf)) > 0) {
 		n1 = write(fdt, buf, n);
 		if(n1 != n){