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authorKay Sievers <kay.sievers@vrfy.org>2009-11-20 03:03:27 +0100
committerKay Sievers <kay.sievers@vrfy.org>2009-11-20 03:03:27 +0100
commit160b069c25690bfb0c785994c7c3710289179107 (patch)
tree4bda3e40a9a9e533775c2cea5afebd88a7c8cc50 /extras/ata_id
parentecf61aa7fdb5b7e9e19f06584caee9b5eb1c7350 (diff)
ata_id: skip ATA commands if we find an optical drive
Some drives are reported to erase CD-RW media with the ATA commands we send. Thanks to Christoph Stritt <phoenix@jobob.com> for his debugging. Original bug is here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
Diffstat (limited to 'extras/ata_id')
-rw-r--r--extras/ata_id/ata_id.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/extras/ata_id/ata_id.c b/extras/ata_id/ata_id.c
index 66b9f42332..cbd3b5b8d2 100644
--- a/extras/ata_id/ata_id.c
+++ b/extras/ata_id/ata_id.c
@@ -38,6 +38,7 @@
#include <linux/types.h>
#include <linux/hdreg.h>
#include <linux/fs.h>
+#include <linux/cdrom.h>
#include <arpa/inet.h>
#include "libudev.h"
@@ -210,6 +211,16 @@ static int disk_identify (struct udev *udev,
goto fail;
}
+ /*
+ * do not confuse optical drive firmware with ATA commands
+ * some drives are reported to blank CD-RWs
+ */
+ if (ioctl(fd, CDROM_GET_CAPABILITY, NULL) >= 0) {
+ errno = EIO;
+ ret = -1;
+ goto fail;
+ }
+
/* So, it's a block device. Let's make sure the ioctls work */
if ((ret = ioctl(fd, BLKGETSIZE64, &size)) < 0)
goto fail;