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