From: Hannes Reinecke <hare@suse.de>
Date: Fri, 1 Sep 2006 13:50:23 +0000 (+0200)
Subject: [SCSI] Wrong size information for devices with disabled read access
X-Git-Tag: v2.6.19-rc1~1266^2~19^2~24
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=69bdd88ca2670c321fef774e77059516f836c6f2;p=linux-2.6

[SCSI] Wrong size information for devices with disabled read access

When accessing a device with disabled read access the capacity is set
randomly to 1GB. This makes it impossible to userspace tools to detect
invalid device capacities.

Signed-off-by: Mike Anderson <andmike@us.ibm.com>
Acked-by: Chris Mason <mason@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
---

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 98bd3aab97..638cff41d4 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1215,7 +1215,7 @@ repeat:
 		/* Either no media are present but the drive didn't tell us,
 		   or they are present but the read capacity command fails */
 		/* sdkp->media_present = 0; -- not always correct */
-		sdkp->capacity = 0x200000; /* 1 GB - random */
+		sdkp->capacity = 0; /* unknown mapped to zero - as usual */
 
 		return;
 	} else if (the_result && longrc) {