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systemd/test/test-efi-create-disk.sh
Alexander Kurtz 00f69504a2 bootctl: Always use upper case for "/EFI/BOOT" and "/EFI/BOOT/BOOT*.EFI".
If the ESP is not mounted with "iocharset=ascii", but with "iocharset=utf8"
(which is for example the default in Debian), the file system becomes case
sensitive. This means that a file created as "FooBarBaz" cannot be accessed as
"foobarbaz" since those are then considered different files.

Moreover, a file created as "FooBar" can then also not be accessed as "foobar",
and it also prevents such a file from being created, as both would use the same
8.3 short name "FOOBAR".

Even though the UEFI specification [0] does give the canonical spelling for
the files mentioned above, not all implementations completely conform to that,
so it's possible that those files would already exist, but with a different
spelling, causing subtle bugs when scanning or modifying the ESP.

While the proper fix would of course be that everybody conformed to the
standard, we can work around this problem by just referencing the files by
their 8.3 short names, i.e. using upper case.

Fixes: #3740

[0] <http://www.uefi.org/specifications>, version 2.6, section 3.5.1.1
2016-07-21 03:02:15 +02:00

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#!/bin/bash -e
# create GPT table with EFI System Partition
rm -f test-efi-disk.img
dd if=/dev/null of=test-efi-disk.img bs=1M seek=512 count=1
parted --script test-efi-disk.img "mklabel gpt" "mkpart ESP fat32 1MiB 511MiB" "set 1 boot on"
# create FAT32 file system
LOOP=$(losetup --show -f -P test-efi-disk.img)
mkfs.vfat -F32 ${LOOP}p1
mkdir -p mnt
mount ${LOOP}p1 mnt
mkdir -p mnt/EFI/{BOOT,systemd}
cp systemd-bootx64.efi mnt/EFI/BOOT/BOOTX64.efi
[ -e /boot/shellx64.efi ] && cp /boot/shellx64.efi mnt/
mkdir mnt/EFI/Linux
echo -n "foo=yes bar=no root=/dev/fakeroot debug rd.break=initqueue" > mnt/cmdline.txt
objcopy \
--add-section .osrel=/etc/os-release --change-section-vma .osrel=0x20000 \
--add-section .cmdline=mnt/cmdline.txt --change-section-vma .cmdline=0x30000 \
--add-section .splash=test/splash.bmp --change-section-vma .splash=0x40000 \
--add-section .linux=/boot/$(cat /etc/machine-id)/$(uname -r)/linux --change-section-vma .linux=0x2000000 \
--add-section .initrd=/boot/$(cat /etc/machine-id)/$(uname -r)/initrd --change-section-vma .initrd=0x3000000 \
linuxx64.efi.stub mnt/EFI/Linux/linux-test.efi
# install entries
mkdir -p mnt/loader/entries
echo -e "timeout 3\n" > mnt/loader/loader.conf
echo -e "title Test\nefi /test\n" > mnt/loader/entries/test.conf
echo -e "title Test2\nlinux /test2\noptions option=yes word number=1000 more\n" > mnt/loader/entries/test2.conf
echo -e "title Test3\nlinux /test3\n" > mnt/loader/entries/test3.conf
echo -e "title Test4\nlinux /test4\n" > mnt/loader/entries/test4.conf
echo -e "title Test5\nefi /test5\n" > mnt/loader/entries/test5.conf
echo -e "title Test6\nlinux /test6\n" > mnt/loader/entries/test6.conf
sync
umount mnt
rmdir mnt
losetup -d $LOOP