dracut/0053-lsinitrd-use-xz-with-single-stream-if-available.patch

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2012-01-23 11:28:44 +00:00
From c96425c3647d1d5e7110ac369056df79a6024e1d Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Mon, 23 Jan 2012 10:34:03 +0100
Subject: [PATCH] lsinitrd: use xz with --single-stream, if available
The F16 installation image is two concatenated cpio images:
[xz-compressed dracut initramfs][uncompressed cpio with /squashfs.img]
So to show the contents, use xz with the "--single-stream" option.
https://bugzilla.redhat.com/show_bug.cgi?id=742299
---
lsinitrd | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/lsinitrd b/lsinitrd
index ad7ece9..1d953b7 100755
--- a/lsinitrd
+++ b/lsinitrd
@@ -36,12 +36,16 @@ image="${1:-/boot/initramfs-$(uname -r).img}"
CAT=zcat
FILE_T=$(file "$image")
+if echo "test"|xz|xz -dc --single-stream; then
+ XZ_SINGLE_STREAM="--single-stream"
+fi
+
if [[ "$FILE_T" =~ ": gzip compressed data" ]]; then
CAT=zcat
elif [[ "$FILE_T" =~ ": xz compressed data" ]]; then
- CAT=xzcat
+ CAT="xzcat $XZ_SINGLE_STREAM"
elif [[ "$FILE_T" =~ ": XZ compressed data" ]]; then
- CAT=xzcat
+ CAT="xzcat $XZ_SINGLE_STREAM"
elif [[ "$FILE_T" =~ ": data" ]]; then
CAT=lzcat
fi