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From 9e8f172dc01f7e013bb5d302ef6c90e2dc6b30c8 Mon Sep 17 00:00:00 2001
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From: Jonathan Lebon <jonathan@jlebon.com>
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Date: Tue, 29 Oct 2019 16:54:10 -0400
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Subject: [PATCH] 01fips: trim off GRUB boot device from BOOT_IMAGE
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E.g. in RHCOS, the `BOOT_IMAGE` from the cmdline is:
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(hd0,gpt1)/ostree/rhcos-e493371e5ee8407889029ec979955a2b86fd7e3cae5a0591b9db1cd248d966e8/vmlinuz-4.18.0-146.el8.x86_64
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Which of course is a GRUB thing, not an actual pathname we'll be able to
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resolve. In fact, we can simply scrap it off from the variable. Our code
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is already able to handle both cases: whether the device refers to a
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separate boot partition, or just the root filesystem with a regular
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`/boot` directory.
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---
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modules.d/01fips/fips.sh | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/modules.d/01fips/fips.sh b/modules.d/01fips/fips.sh
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index de2755b0..559952ca 100755
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--- a/modules.d/01fips/fips.sh
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+++ b/modules.d/01fips/fips.sh
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@@ -113,6 +113,10 @@ do_fips()
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do_rhevh_check /run/initramfs/live/isolinux/vmlinuz0 || return 1
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else
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BOOT_IMAGE="$(getarg BOOT_IMAGE)"
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+
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+ # Trim off any leading GRUB boot device (e.g. ($root) )
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+ BOOT_IMAGE="$(echo "${BOOT_IMAGE}" | sed 's/^(.*)//')"
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+
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BOOT_IMAGE_NAME="${BOOT_IMAGE##*/}"
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BOOT_IMAGE_PATH="${BOOT_IMAGE%${BOOT_IMAGE_NAME}}"
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