From 55ad13c26fe5d0e606be5a83937f31b8cf576588 Mon Sep 17 00:00:00 2001

From: Karel Zak <kzak@redhat.com>

Date: Thu, 28 Apr 2016 13:54:01 +0200

Subject: [PATCH] libblkid: make I/O errors on CDROMs non-fatal

It seems too tricky to get a real size of the data track on hybrid

disks with audio+data. It seems overkill to analyze all header in

libblkid and on some disks it's probably possible to get I/O error

almost everywhere due to crazy copy protection etc.

Signed-off-by: Karel Zak <kzak@redhat.com>

---

 libblkid/src/probe.c | 5 ++++-

 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libblkid/src/probe.c b/libblkid/src/probe.c

index 63baed3..5d9f701 100644

--- a/libblkid/src/probe.c

+++ b/libblkid/src/probe.c

@@ -615,7 +615,10 @@ static struct blkid_bufinfo *read_buffer(blkid_probe pr, uint64_t real_off, uint

 	if (ret != (ssize_t) len) {

 		DBG(LOWPROBE, ul_debug("\tread failed: %m"));

 		free(bf);

-		if (ret >= 0)

+

+		/* I/O errors on CDROMs are non-fatal to work with hybrid

+		 * audio+data disks */

+		if (ret >= 0 || blkid_probe_is_cdrom(pr))

 			errno = 0;

 		return NULL;

 	}

-- 

2.4.11