50 lines
1.5 KiB
Diff
50 lines
1.5 KiB
Diff
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From f81c864eede2a11bfeb849cb2a2634be034ed7fb Mon Sep 17 00:00:00 2001
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From: Kairui Song <kasong@redhat.com>
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Date: Wed, 25 Jul 2018 16:34:08 +0800
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Subject: [PATCH] lsinitrd: allow to only unpack certain files
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Before this patch, "--unpack" will always unpack the whole image.
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Make "--unpack" be able to unpack only certain files, it will be
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easier to retrieve files from initramfs image.
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Signed-off-by: Kairui Song <kasong@redhat.com>
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---
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lsinitrd.sh | 16 +++++++++++++---
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1 file changed, 13 insertions(+), 3 deletions(-)
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diff --git a/lsinitrd.sh b/lsinitrd.sh
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index 80fbf922..1b9a93b6 100755
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--- a/lsinitrd.sh
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+++ b/lsinitrd.sh
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@@ -159,8 +159,15 @@ list_files()
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unpack_files()
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{
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- $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose
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- ((ret+=$?))
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+ if (( ${#filenames[@]} > 0 )); then
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+ for f in "${!filenames[@]}"; do
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+ $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose $f
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+ ((ret+=$?))
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+ done
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+ else
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+ $CAT "$image" 2>/dev/null | cpio -id --quiet $verbose
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+ ((ret+=$?))
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+ fi
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}
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@@ -175,7 +182,10 @@ case $bin in
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CAT="cat --"
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is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null)
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if [[ "$is_early" ]]; then
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- if [[ -n "$unpackearly" ]]; then
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+ if [[ -n "$unpack" ]]; then
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+ # should use --unpackearly for early CPIO
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+ :
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+ elif [[ -n "$unpackearly" ]]; then
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unpack_files
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elif (( ${#filenames[@]} > 0 )); then
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extract_files
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