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authornl6720 <nl6720@gmail.com>2023-01-22 12:17:51 +0200
committernl6720 <nl6720@gmail.com>2023-02-02 11:49:16 +0200
commit3f95d391eff6145e0546b8c0b69bd2851fc3c400 (patch)
treec0f1ae8ca936bbcb77a75304ab9a30a9c5475dce /configs/baseline/grub
parent8d7ad3c629e1a2d0cb2f2008e62ea979639230e7 (diff)
configs/*/grub/grub.cfg: search for a .uuid file in /.disk/ and use the volume it's on
Search for `/.disk/%UUID_SEARCH_FILENAME%.uuid` and pass the UUID of the volume it's on as `archisodevice`. mkarchiso will replace `%UUID_SEARCH_FILENAME%` with a hardcoded value generated using `SOURCE_DATE_EPOCH` durring ISO build. This allows to prepare an UEFI bootable installation medium by simply copying the directory structure without having to touch `grub.cfg`. Relying on the volume UUID instead of its LABEL also avoids collisions of multiple ISOs created in the same month. Fixes #202
Diffstat (limited to 'configs/baseline/grub')
-rw-r--r--configs/baseline/grub/grub.cfg8
1 files changed, 6 insertions, 2 deletions
diff --git a/configs/baseline/grub/grub.cfg b/configs/baseline/grub/grub.cfg
index d2aa4ab..7d73fe6 100644
--- a/configs/baseline/grub/grub.cfg
+++ b/configs/baseline/grub/grub.cfg
@@ -20,6 +20,11 @@ if serial --unit=0 --speed=115200; then
terminal_output --append serial
fi
+# Search for the ISO volume
+regexp --set=1:ARCHISO_HINT '^\(([^)]+)\)' "${cmdpath}"
+search --no-floppy --set=root --file '/.disk/%UUID_SEARCH_FILENAME%.uuid' --hint "${ARCHISO_HINT}"
+probe --set ARCHISO_UUID --fs-uuid "${root}"
+
# Set default menu entry
default=archlinux
timeout=15
@@ -30,7 +35,6 @@ timeout_style=menu
menuentry "Arch Linux (x86_64, UEFI)" --class arch --class gnu-linux --class gnu --class os --id 'archlinux' {
set gfxpayload=keep
- search --no-floppy --set=root --label %ARCHISO_LABEL%
- linux /%INSTALL_DIR%/boot/x86_64/vmlinuz-linux archisobasedir=%INSTALL_DIR% archisolabel=%ARCHISO_LABEL%
+ linux /%INSTALL_DIR%/boot/x86_64/vmlinuz-linux archisobasedir=%INSTALL_DIR% archisodevice=/dev/disk/by-uuid/${ARCHISO_UUID}
initrd /%INSTALL_DIR%/boot/x86_64/initramfs-linux.img
}