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Move get_grub_boot_params() into the file related to all the grub
configuration.
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Add find_windows_efi_loader and find_linux_efi_loader to reduce
code duplication and to centralize efi loader path modifications.
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The json library was a dependency during the development of the
boot OS functions and it is no longer needed in that file.
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Log an error message in known error cases and log a backtrace
otherwise.
Define a new error type OgError to be used in all the 'raise'
blocks to define the error message to log. The exception
propagates until it reaches send_internal_server_error() where
the exception type is checked. If the type is OgError we log
the exception message. Logs the backtrace for other types.
The initial error implementation printed a backtrace everytime
an error ocurred. The next iteration changed it to only print
a backtrace in a very particular case but ended up omiting too
much information such as syntax errors or unknown error context.
The actual implementation only logs the cases we already cover in
the codebase and logs a bracktrace in the others, enabling a
better debugging experience.
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Replace unexistent mountpoint variable to report a failed
mount operation before an OS probe from a partition.
Improve the semantics of the error message replacing 'at' with
'into'.
Remove the period at the end of the log message.
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The Windows bootloader only supports a UEFI boot from a GPT
partition. Set enforce_gpt to True in every codepath related to
Windows. When enforce_gpt is set to True get_efi_partition()
raises an exception when an MBR partition scheme is detected.
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Make is_uefi_supported() only check for /sys/firmware/efi as
get_efi_partition() will detect a missing ESP or an invalid
partition scheme. Stop using get_efi_partition() inside
is_uefi_supported() as the former is eventually called in every
UEFI related code.
UEFI supports both MBR and GPT as partition schemes and this is
a required change to handle the particular case of Windows not
being able to boot UEFI from a MBR partition scheme.
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Provide more information in exception messages as those are the
source of the logging messages. Add information about paths, files
or configuration related to the operation associated to the
exception.
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Replace exception types to be more explicit about the nature of
the error.
Improve the exception raising semantics by using the 'from' keyword,
this wraps an older exception into a new one so it is still considered
the same object.
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Use only the exception messages as the main resource for error
messages.
The previous error code had string duplication in the form of:
logging.error('msg here')
raise Exception('msg here')
That approach also has the downside of having log duplication as
it had the local logging.err() and a global logging.exception()
inside send_internal_server_error capturing the exception message.
The actual code only requires raising an exception with a proper
error message.
Improve exception messages to give more error context.
Log every AssertionError as a backtrace.
Use the 'raise Exception from e' syntax to modify the a previously
raised exception 'e' into an exception with aditional context or
different type. This also prevents the message that warns about
newer exceptions being launch after an initial exception.
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Create ogboot.me and ogboot.secondboot as empty files and
ogboot.firstboot with the value "iniciado" in the root of
the BIOS Windows system partition.
The files must contain data for GRUB to be able to write content,
therefore these are created containing 3072 null bytes.
The Windows boot process is handled by the "pxe" profile.
There the files ogboot.me, ogboot.firstboot and ogboot.secondboot
are used as a state machine to chose between booting Windows and
ogLive.
The first Windows boot happens if ogboot.me and ogboot.firstboot
are identical, then "iniciado" is written in ogboot.firstboot.
We skip this stage as we create ogboot.firstboot with 'iniciado'.
The second Windows boot occurs if ogboot.me and ogboot.secondboot
are boot identical, then "iniciado" is written in ogboot.secondboot.
After the Windows boot ogLive is booted.
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Create a bios.py file to hold all the BIOS specific functions.
Implement the _boot_bios_linux in Python. The new boot process
tries to find the vmlinuz and initrd binaries at the desired
partition. Then it tries to load them with kexec with the proper
Grub boot params.
One step closer to the removal of the boot legacy script.
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The OS probe logic must be able to check a distro programmatically,
add get_linux_distro_id to return an id whitout versioning.
Ensure the availability of 'ubuntu' when we need to ensure certain
features are only used with a supported system.
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This change is a preparative for reimplementing the BIOS boot
in order to deprecate the legacy script. All the codepaths to
boot systems located at a partition are now called from the
boot_os_at function enabling an easier structure for the incoming
code.
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Checking the existence /sys/firmware/efi as it might appear
sometimes in BIOS installs if the BIOS configuration is not
proper. Checking for the EFI partition is the safest method
to veryfy the install type.
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Replace IniciarSesion script in favor of native Python code when booting
a UEFI system into Linux. This completes the implementation of booting
into an OS on a UEFI compliant system.
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Add utility module related to the process of booting a system from a
client's partition.
The main utility function to boot a clients system is boot_os_at(), from
which firmware (UEFI or BIOS) and os-family specific private functions are invoked.
This initial commit adds UEFI windows boot function.
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