From a3e9d8935f71d308cc879e35cc7f8223996c61ca Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Wed, 10 Aug 2005 17:16:38 +0000
Subject: Fix overflow in old Linux file size.

---
 src/lib9/_p9dir.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/lib9/_p9dir.c')

diff --git a/src/lib9/_p9dir.c b/src/lib9/_p9dir.c
index e5e9c975..25e6394b 100644
--- a/src/lib9/_p9dir.c
+++ b/src/lib9/_p9dir.c
@@ -47,6 +47,8 @@ isdisk(struct stat *st)
 #include <linux/hdreg.h>
 #include <linux/fs.h>
 #include <sys/ioctl.h>
+#undef major
+#define major(dev) ((int)(((dev) >> 8) & 0xff))
 static vlong
 disksize(int fd, int dev)
 {
@@ -62,7 +64,7 @@ disksize(int fd, int dev)
 		return u64;
 #endif
 	if(ioctl(fd, BLKGETSIZE, &l) >= 0)
-		return l*512;
+		return (vlong)l*512;
 	if(ioctl(fd, HDIO_GETGEO, &geo) >= 0)
 		return (vlong)geo.heads*geo.sectors*geo.cylinders*512;
 	return 0;
-- 
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