[PATCH 3.2 069/152] udf: Treat symlink component of type 2 as /

Ben Hutchings
2015-02-17T01:46:53Z

From: Jan Kara <jack@suse.cz>

commit fef2e9f3301934773e4f1b3cc5c7bffb119346b8 upstream.

Currently, we ignore symlink component of type 2. But mkisofs and other OS'
seem to treat it as / so do the same for compatibility.

Reported-by: "Gábor S." <otnaccess@hotmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/udf/symlink.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)

--- a/fs/udf/symlink.c
+++ b/fs/udf/symlink.c
@@ -41,10 +41,16 @@ static void udf_pc_to_char(struct super_
pc = (struct pathComponent *)(from + elen);
switch (pc->componentType) {
case 1:
- if (pc->lengthComponentIdent == 0) {
- p = to;
- *p++ = '/';
- }
+ /*
+ * Symlink points to some place which should be agreed
+ * upon between originator and receiver of the media. Ignore.
+ */
+ if (pc->lengthComponentIdent > 0)
+ break;
+ /* Fall through */
+ case 2:
+ p = to;
+ *p++ = '/';
break;
case 3:
memcpy(p, "../", 3);