From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 5 May 2016 14:48:47 +0000 (-0400)
Subject: get_acorn_filename(): deobfuscate a bit
X-Git-Tag: v4.7-rc1~144^2~14
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e17a21d3bb067e561fc0112a3957f579af26d9d9;p=karo-tx-linux.git

get_acorn_filename(): deobfuscate a bit

Lots of Idiotic Silly Parentheses is -> that way...  What that
condition checks is that there's exactly 32 bytes between the
end of name and the end of entire drectory record.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index b943cbd963bb..dfd14e1b9dcf 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -58,7 +58,7 @@ int get_acorn_filename(struct iso_directory_record *de,
 	std = sizeof(struct iso_directory_record) + de->name_len[0];
 	if (std & 1)
 		std++;
-	if ((*((unsigned char *) de) - std) != 32)
+	if (de->length[0] - std != 32)
 		return retnamlen;
 	chr = ((unsigned char *) de) + std;
 	if (strncmp(chr, "ARCHIMEDES", 10))