9 Commits

Author SHA1 Message Date
Radoslav Kolev
25b7f6b934 blsuki: Error out if unexpected arguments are supplied
This can be especially helpful, as the Fedora version of the blscfg
actually made use of positional arguments, but current implementation
switched to parameters. For example what used to be "blscfg (hd0,gpt2)/..."
now should be "blscfg --path (hd0,gpt2)/...)". In case of old configs/scripts
still supplying positional arguments we will now error out instead of just
ignoring them and falling back to defaults silently.

Signed-off-by: Radoslav Kolev <radoslav.kolev@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-12-21 16:41:47 +01:00
Radoslav Kolev
cfeff5e071 blsuki: Fix default location in comment to /loader/entries
Signed-off-by: Radoslav Kolev <radoslav.kolev@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-12-21 16:41:47 +01:00
Radoslav Kolev
d19a74a17f blsuki: Use specified device in case of fallback
Currently if the fallback option is enabled and no files are found in
the specified directory it searches the default (loader/conf) directory
but always in the device set by the root environment variable. It makes
more sense and also the comment in the code implies, that the default
directory on the current device should be searched.

Signed-off-by: Radoslav Kolev <radoslav.kolev@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-12-21 16:41:46 +01:00
Radoslav Kolev
242816e93f blsuki: Fix position of DIR parameter in blscfg command summary
The DIR parameter in the example should be specified after the -p|--path option
instead of after -f|fallback.

Signed-off-by: Radoslav Kolev <radoslav.kolev@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-12-21 16:41:46 +01:00
Radoslav Kolev
b733d9d6dc blsuki: Fix typo in entry parameter description
Change "specificUKII entries" to "specific UKI entries".

Signed-off-by: Radoslav Kolev <radoslav.kolev@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-12-21 16:41:46 +01:00
Michael Chang
8a850f47d0 blsuki: Fix grub_errno leakage in blsuki_is_default_entry()
The grub_strtol() call in blsuki_is_default_entry() can set grub_errno
to either GRUB_ERR_BAD_NUMBER or GRUB_ERR_OUT_OF_RANGE if the input
string is invalid or out of range.

This grub_errno value is currently left uncleared, which can lead to
unexpected behavior in subsequent functions that rely on checking
current state of grub_errno.

Clear grub_errno unconditionally when grub_strtol() reports error so
that we can plug the leak.

Signed-off-by: Michael Chang <mchang@suse.com>
Reviewed-by: Sudhakar Kuppusamy <sudhakar@linux.ibm.com>
Reviewed-by: Avnish Chouhan <avnish@linux.ibm.com>
Reviewed-by: Alec Brown <alec.r.brown@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-11-20 17:46:08 +01:00
Alec Brown
14c2966c72 blsuki: Add uki command to load Unified Kernel Image entries
A Unified Kernel Image (UKI) is a single UEFI PE file that combines
a UEFI boot stub, a Linux kernel image, an initrd, and further resources.
The uki command will locate where the UKI file is and create a GRUB menu
entry to load it.

The Unified Kernel Image Specification: https://uapi-group.org/specifications/specs/unified_kernel_image/

Signed-off-by: Alec Brown <alec.r.brown@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-09-04 14:37:20 +02:00
Robbie Harwood
5190df8510 blsuki: Check for mounted /boot in emu
Irritatingly, BLS defines paths relative to the mountpoint of the
filesystem which contains its snippets, not / or any other fixed
location. So grub-emu needs to know whether /boot is a separate
filesystem from / and conditionally prepend a path.

Signed-off-by: Robbie Harwood <rharwood@redhat.com>
Signed-off-by: Alec Brown <alec.r.brown@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-09-04 14:37:20 +02:00
Peter Jones
8cee1c284b blsuki: Add blscfg command to parse Boot Loader Specification snippets
The BootLoaderSpec (BLS) defines a scheme where different bootloaders can
share a format for boot items and a configuration directory that accepts
these common configurations as drop-in files.

The BLS Specification: https://uapi-group.org/specifications/specs/boot_loader_specification/

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Will Thompson <wjt@endlessm.com>
Signed-off-by: Alec Brown <alec.r.brown@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2025-09-04 14:37:20 +02:00