From: Eric Sandeen <sandeen@sandeen.net>
Date: Wed, 29 Jul 2015 23:17:43 +0000 (+1000)
Subject: metadump: Obfuscate the filesystem label
X-Git-Tag: v3.2.4~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8927d44b632cfdf49338a12b0b7a7a58a474de98;p=thirdparty%2Fxfsprogs-dev.git

metadump: Obfuscate the filesystem label

Not a lot of room for sensitive data, but while
we're at it...

There is no need to do the normal hashed name,
we just replace it with "L's" - and for kicks,
we preserve the length of the label.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

diff --git a/db/metadump.c b/db/metadump.c
index bea5de7c3..5cc1ece98 100644
--- a/db/metadump.c
+++ b/db/metadump.c
@@ -2049,6 +2049,13 @@ scan_ag(
 		if (stop_on_read_error)
 			goto pop_out;
 	} else {
+		/* Replace any filesystem label with "L's" */
+		if (obfuscate) {
+			struct xfs_sb *sb = iocur_top->data;
+			memset(sb->sb_fname, 'L',
+			       min(strlen(sb->sb_fname), sizeof(sb->sb_fname)));
+			iocur_top->need_crc = 1;
+		}
 		if (write_buf(iocur_top))
 			goto pop_out;
 	}