49 lines
1.8 KiB
Diff
49 lines
1.8 KiB
Diff
From 04febed7822979d38cecb47b8675d021bbd7bd72 Mon Sep 17 00:00:00 2001
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From: Will Woods <wwoods@redhat.com>
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Date: Thu, 8 Mar 2012 18:02:29 -0500
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Subject: [PATCH] img-lib: fix unpack_img()
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- det_img should have been det_archive
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- for ft=xz|gzip|bzip2, decompr should be "$ft -dc"
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---
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modules.d/99img-lib/img-lib.sh | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/modules.d/99img-lib/img-lib.sh b/modules.d/99img-lib/img-lib.sh
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index f6be26d..22507aa 100755
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--- a/modules.d/99img-lib/img-lib.sh
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+++ b/modules.d/99img-lib/img-lib.sh
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@@ -1,12 +1,13 @@
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#!/bin/sh
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# img-lib.sh: utilities for dealing with archives and filesystem images.
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#
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-# TODO: identify/unpack rpm, deb?
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+# TODO: identify/unpack rpm, deb, maybe others?
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# super-simple "file" that only identifies archives.
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# works with stdin if $1 is not set.
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det_archive() {
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+ # NOTE: echo -e works in ash and bash, but not dash
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local bz="BZh" xz="$(echo -e '\xfd7zXZ')" gz="$(echo -e '\x1f\x8b')"
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local headerblock="$(dd ${1:+if=$1} bs=262 count=1 2>/dev/null)"
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case "$headerblock" in
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@@ -32,7 +33,7 @@ unpack_archive() {
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local img="$1" outdir="$2" archiver="" decompr=""
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local ft="$(det_archive $img)"
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case "$ft" in
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- xz|gzip|bzip2) decompr="$decompr -dc" ;;
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+ xz|gzip|bzip2) decompr="$ft -dc" ;;
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cpio|tar) decompr="cat";;
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*) return 1 ;;
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esac
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@@ -64,7 +65,7 @@ unpack_img() {
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[ -r "$img" ] || { warn "can't read img!"; return 1; }
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[ -n "$outdir" ] || { warn "unpack_img: no output dir given"; return 1; }
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- if [ "$(det_img $img)" ]; then
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+ if [ "$(det_archive $img)" ]; then
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unpack_archive "$@" || { warn "can't unpack archive file!"; return 1; }
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else
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unpack_fs "$@" || { warn "can't unpack filesystem image!"; return 1; }
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