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x86/build: Fix broken copy command in genimage.sh when making isoimage

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Problem: Currently when running the "make isoimage" command there is an
error related to wrong parameters passed to the cp command:

  "cp: missing destination file operand after 'arch/x86/boot/isoimage/'"

This is caused because FDINITRDS is an empty array.

Solution: Check if FDINITRDS is empty before executing the "cp" command,
similar to how it is done in the case of hdimage.

Signed-off-by: Nir Lichtman <nir@lichtman.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Link: https://lore.kernel.org/r/20250110120500.GA923218@lichtman.org
This commit is contained in:
Nir Lichtman 2025-01-10 12:05:00 +00:00 • committed by Ingo Molnar
parent d082ecbc71
commit e451630226
1 changed files with 4 additions and 1 deletions
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5
arch/x86/boot/genimage.sh
View file

@ -22,6 +22,7 @@
# This script requires:
# bash
# syslinux
# genisoimage
# mtools (for fdimage* and hdimage)
# edk2/OVMF (for hdimage)
#
@ -251,7 +252,9 @@ geniso() {
cp "$isolinux" "$ldlinux" "$tmp_dir"
cp "$FBZIMAGE" "$tmp_dir"/linux
echo default linux "$KCMDLINE" > "$tmp_dir"/isolinux.cfg
cp "${FDINITRDS[@]}" "$tmp_dir"/
if [ ${#FDINITRDS[@]} -gt 0 ]; then
cp "${FDINITRDS[@]}" "$tmp_dir"/
fi
genisoimage -J -r -appid 'LINUX_BOOT' -input-charset=utf-8 \
-quiet -o "$FIMAGE" -b isolinux.bin \
-c boot.cat -no-emul-boot -boot-load-size 4 \