This patch gives yaird support for UUID and LABEL with XFS
commit a859d72be297f7c7f6dde51ea11e347e160913a8
Author: Patrick McManus <[EMAIL PROTECTED]>
Date: Thu Feb 14 15:21:24 2008 -0500
yaird label and uuid support for xfs
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=337065
debian bug 337065 merged with Merged with #341498, #457462;
XFS superblock information that allows yaird to work with UUIDs in
/etc/fstab as it already can for ext3 and Resier
Use of blkid tool is still a better idea, but this patch is consistent
with existing support
diff --git a/perl/LabeledPartition.pm b/perl/LabeledPartition.pm
index e1c9553..5cbff3d 100644
--- a/perl/LabeledPartition.pm
+++ b/perl/LabeledPartition.pm
@@ -69,6 +69,7 @@ sub try ($) {
binmode ($fh);
$result = tryExt2 ($fh, $path) unless defined $result;
$result = tryReiser ($fh, $path) unless defined $result;
+ $result = tryXFS ($fh, $path) unless defined $result;
# ignore errors, could not have been very wrong
# if a working superblock came out of it.
@@ -149,4 +150,42 @@ sub tryReiser ($$) {
return $result;
}
+sub tryXFS ($$)
+{
+ my ($fh, $path) = @_;
+ my $result = undef;
+
+ # bytes 32-47 are the uuid
+ # offset is 0 - seek back to start
+ if (! seek ($fh, 0, 0)) {
+ return $result;
+ }
+
+ my $superBlock;
+ my $rc = read ($fh, $superBlock, 120);
+ if (! defined ($rc) || $rc != 120) {
+ return $result;
+ }
+
+ my ($magic, $uuid, $label) =
+ unpack
+ "N x[28] a[16] x[60] Z[12]",
+ $superBlock;
+
+ my $t = join ("", map { sprintf "%02x", ord($_) } split(//, $uuid));
+
+ if ($magic == 0x58465342) {
+
+ $uuid = fancyUuid ($uuid);
+ $result = LabeledPartition->new (
+ type => "xfs",
+ label => $label,
+ uuid => fancyUuid($t),
+ path => $path,
+ );
+
+ }
+ return $result;
+}
+
1;
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