41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
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From 85235ab58df8343a1a0314333b360648a5d0f452 Mon Sep 17 00:00:00 2001
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From: Philipp Rudo <prudo@redhat.com>
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Date: Mon, 26 Aug 2024 15:29:01 +0200
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Subject: [PATCH 35/35] fix(squash-lib): harden against empty $initdir
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The postinstall phase of 99squash-lib has the potential to delete the
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whole rootfs if $initdir is empty. This should(tm) never happen.
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Nevertheless as the consequences are so devastating it is better to
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double check.
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Signed-off-by: Philipp Rudo <prudo@redhat.com>
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(cherry picked from commit 6b089c70761c81a7b82a1bfba5f2c1faef7e972f)
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Resolves: RHEL-43460
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---
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modules.d/99squash-lib/module-setup.sh | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/modules.d/99squash-lib/module-setup.sh b/modules.d/99squash-lib/module-setup.sh
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index 6a0b6f85..be3d3dc0 100755
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--- a/modules.d/99squash-lib/module-setup.sh
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+++ b/modules.d/99squash-lib/module-setup.sh
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@@ -72,6 +72,14 @@ squash_install() {
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squash_installpost() {
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local _file _handler
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+ # this shouldn't happen but...
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+ # ...better safe than deleting your rootfs
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+ if [[ -z $initdir ]]; then
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+ #shellcheck disable=SC2016
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+ dfatal '$initdir not set. Something went terribly wrong.'
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+ exit 1
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+ fi
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+
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_handler=$(squash_get_handler)
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[[ -n $_handler ]] || return 1
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--
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2.42.0
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