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From eaba11eff1156f7a0324a1aa46e43396c7ec3628 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Renaud=20M=C3=A9trich?= <rmetrich@redhat.com>
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Date: Mon, 1 Mar 2021 17:43:10 +0100
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Subject: [PATCH] fix(dracut.sh): harden dracut against GZIP environment
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variable
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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When a GZIP environment variable is set, this leads to various breakage:
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In case 'pigz' is installed and GZIP is defined as a path, e.g.
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/usr/local/bin/gzip, then dracut will fail with the following message:
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"
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pigz: abort: cannot provide files in GZIP environment variable
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"
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In case 'pigz' isn't installed and regular 'gzip' is used and GZIP is
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defined as a path, e.g. /usr/local/bin/gzip, then the path will be
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zipped and dracut will fail for no obvious reason. Trying again, dracut
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will then fail with following message:
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"
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gzip: /usr/local/bin/gzip.gz already exists; not overwritten
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"
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In any case, GZIP environment should be unset to avoid breakage or
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unwanted behaviour. This variable is anyway obsolescent, from gzip(1)
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manpage.
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Signed-off-by: Renaud Métrich <rmetrich@redhat.com>
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(cherry picked from commit d8e47e201af4646e2a82e11220ea9c993bd2ed48)
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Resolves: #1933773
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---
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dracut.sh | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/dracut.sh b/dracut.sh
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index 01abe7a4..4340e646 100755
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--- a/dracut.sh
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+++ b/dracut.sh
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@@ -24,6 +24,7 @@
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# store for logging
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unset BASH_ENV
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+unset GZIP
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# Verify bash version, current minimum is 4
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if (( BASH_VERSINFO[0] < 4 )); then
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