From 2a98da86d978d4a4ffaa61390cc2253026e1e3de Mon Sep 17 00:00:00 2001
From: Andrew Ammerlaan <andrewammerlaan@gentoo.org>
Date: Tue, 1 Oct 2024 20:34:43 +0200
Subject: [PATCH] kernel-install.eclass: fix objcopy overwriting uki

From the manual:
If you do not specify outfile, objcopy creates a temporary file and destructively renames the result with the name of infile.

We don't want that. Unfortunately we cannot use /dev/null as dump, objcopy complains, so we dump it in T instead.

Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>
---
eclass/kernel-install.eclass | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/eclass/kernel-install.eclass b/eclass/kernel-install.eclass
index dc337c7862fde..03c2b4917aef5 100644
--- a/eclass/kernel-install.eclass
+++ b/eclass/kernel-install.eclass
@@ -650,7 +650,10 @@ kernel-install_extract_from_uki() {
local uki=${2}
local out=${3}

- $(tc-getOBJCOPY) "${uki}" --dump-section ".${extract_type}=${out}" ||
+ # objcopy overwrites input if there is no output, dump the output in T. + # We unfortunately cannot use /dev/null here
+ $(tc-getOBJCOPY) "${uki}" "${T}/dump.efi" \
+ --dump-section ".${extract_type}=${out}" ||
die "Failed to extract ${extract_type}"
chmod 644 "${out}" || die
}

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