1630d76c87
docs/README.profile.rst: Add documentation for the optional `buildmodes` array in profiledef.sh, the understood build modes `bootstrap` and `iso` and the implicit default build mode 'iso'. Add basic documentation for the bootstrap_packages.arch file. Add missing backticks. Fix indent.
163 lines
8.6 KiB
ReStructuredText
163 lines
8.6 KiB
ReStructuredText
=======
|
|
profile
|
|
=======
|
|
|
|
An archiso profile consists of several configuration files and a directory for files to be added to the resulting image.
|
|
|
|
.. code:: plaintext
|
|
|
|
profile/
|
|
├── airootfs/
|
|
├── efiboot/
|
|
├── syslinux/
|
|
├── bootstrap_packages.arch
|
|
├── packages.arch
|
|
├── pacman.conf
|
|
└── profiledef.sh
|
|
|
|
The required files and directories are explained in the following sections.
|
|
|
|
profiledef.sh
|
|
=============
|
|
|
|
This file describes several attributes of the resulting image and is a place for customization to the general behavior
|
|
of the image.
|
|
|
|
The image file is constructed from some of the variables in ``profiledef.sh``: ``<iso_name>-<iso_version>-<arch>.iso``
|
|
(e.g. ``archlinux-202010-x86_64.iso``).
|
|
|
|
* ``iso_name``: The first part of the name of the resulting image (defaults to ``mkarchiso``)
|
|
* ``iso_label``: The ISO's volume label (defaults to ``MKARCHISO``)
|
|
* ``iso_publisher``: A free-form string that states the publisher of the resulting image (defaults to ``mkarchiso``)
|
|
* ``iso_application``: A free-form string that states the application (i.e. its use-case) of the resulting image (defaults
|
|
to ``mkarchiso iso``)
|
|
* ``iso_version``: A string that states the version of the resulting image (defaults to ``""``)
|
|
* ``install_dir``: A string (maximum eight characters long, which **must** consist of ``[a-z0-9]``) that states the
|
|
directory on the resulting image into which all files will be installed (defaults to ``mkarchiso``)
|
|
* ``buildmodes``: An optional list of strings, that state the build modes that the profile uses. Only the following are
|
|
understood:
|
|
|
|
- ``bootstrap``: Build a compressed file containing a minimal system to bootstrap from
|
|
- ``iso``: Build a bootable ISO image (implicit default, if no ``buildmodes`` are set)
|
|
* ``bootmodes``: A list of strings, that state the supported boot modes of the resulting image. Only the following are
|
|
understood:
|
|
|
|
- ``bios.syslinux.mbr``: Syslinux for x86 BIOS booting from a disk
|
|
- ``bios.syslinux.eltorito``: Syslinux for x86 BIOS booting from an optical disc
|
|
- ``uefi-x64.systemd-boot.esp``: systemd-boot for x86_64 UEFI booting from a disk
|
|
- ``uefi-x64.systemd-boot.eltorito``: systemd-boot for x86_64 UEFI booting from an optical disc
|
|
Note that BIOS El Torito boot mode must always be listed before UEFI El Torito boot mode.
|
|
* ``arch``: The architecture (e.g. ``x86_64``) to build the image for. This is also used to resolve the name of the packages
|
|
file (e.g. ``packages.x86_64``)
|
|
* ``pacman_conf``: The ``pacman.conf`` to use to install packages to the work directory when creating the image (defaults to
|
|
the host's ``/etc/pacman.conf``)
|
|
* ``airootfs_image_type``: The image type to create. The following options are understood (defaults to ``squashfs``):
|
|
|
|
- ``squashfs``: Create a squashfs image directly from the airootfs work directory
|
|
- ``ext4+squashfs``: Create an ext4 partition, copy the airootfs work directory to it and create a squashfs image from it
|
|
- ``erofs``: Create an EROFS image for the airootfs work directory
|
|
* ``airootfs_image_tool_options``: An array of options to pass to the tool to create the airootfs image. ``mksquashfs`` and
|
|
``mkfs.erofs`` are supported. See ``mksquashfs --help`` or ``mkfs.erofs --help`` for all possible options
|
|
* ``file_permissions``: An associative array that lists files and/or directories who need specific ownership or
|
|
permissions. The array's keys contain the path and the value is a colon separated list of owner UID, owner GID and
|
|
access mode. E.g. ``file_permissions=(["/etc/shadow"]="0:0:400")``. When directories are listed with a trailing backslash (``/``) **all** files and directories contained within the listed directory will have the same owner UID, owner GID, and access mode applied recursively.
|
|
|
|
bootstrap_packages.arch
|
|
=======================
|
|
|
|
All packages to be installed into the environment of a bootstrap image have to be listed in an architecture specific
|
|
file (e.g. ``bootstrap_packages.x86_64``), which resides top-level in the profile.
|
|
|
|
Packages have to be listed one per line. Lines starting with a ``#`` and blank lines are ignored.
|
|
|
|
This file is required when generating bootstrap images using the ``bootstrap`` build mode.
|
|
|
|
packages.arch
|
|
=============
|
|
|
|
All packages to be installed into the environment of an ISO image have to be listed in an architecture specific file
|
|
(e.g. ``packages.x86_64``), which resides top-level in the profile.
|
|
|
|
Packages have to be listed one per line. Lines starting with a ``#`` and blank lines are ignored.
|
|
|
|
.. note::
|
|
|
|
The **mkinitcpio** and **mkinitcpio-archiso** packages are mandatory (see `#30
|
|
<https://gitlab.archlinux.org/archlinux/archiso/-/issues/30>`_).
|
|
|
|
This file is required when generating ISO images using the ``iso`` build mode.
|
|
|
|
pacman.conf
|
|
===========
|
|
|
|
A configuration for pacman is required per profile.
|
|
|
|
Some configuration options will not be used or will be modified:
|
|
|
|
* ``CacheDir``: the profile's option is **only** used if it is not the default (i.e. ``/var/cache/pacman/pkg``) and if it is
|
|
not the same as the system's option. In all other cases the system's pacman cache is used.
|
|
* ``HookDir``: it is **always** set to the ``/etc/pacman.d/hooks`` directory in the work directory's airootfs to allow
|
|
modification via the profile and ensure interoparability with hosts using dracut (see `#73
|
|
<https://gitlab.archlinux.org/archlinux/archiso/-/issues/73>`_)
|
|
* ``RootDir``: it is **always** removed, as setting it explicitely otherwise refers to the host's root filesystem (see
|
|
``man 8 pacman`` for further information on the ``-r`` option used by ``pacstrap``)
|
|
* ``LogFile``: it is **always** removed, as setting it explicitely otherwise refers to the host's pacman log file (see
|
|
``man 8 pacman`` for further information on the ``-r`` option used by ``pacstrap``)
|
|
* ``DBPath``: it is **always** removed, as setting it explicitely otherwise refers to the host's pacman database (see
|
|
``man 8 pacman`` for further information on the ``-r`` option used by ``pacstrap``)
|
|
|
|
airootfs
|
|
========
|
|
|
|
This optional directory may contain files and directories that will be copied to the work directory of the resulting
|
|
image's root filesystem.
|
|
The files are copied before packages are being installed to work directory location.
|
|
Ownership and permissions of files and directories from the profile's ``airootfs`` directory are not preserved. The mode
|
|
will be ``644`` for files and ``755`` for directories, all of them will be owned by root. To set custom ownership and/or
|
|
permissions, use ``file_permissions`` in ``profiledef.sh``.
|
|
|
|
With this overlay structure it is possible to e.g. create users and set passwords for them, by providing
|
|
``airootfs/etc/passwd``, ``airootfs/etc/shadow``, ``airootfs/etc/gshadow`` (see ``man 5 passwd``, ``man 5 shadow`` and ``man 5 gshadow`` respectively).
|
|
If user home directories exist in the profile's ``airootfs``, their ownership and (and top-level) permissions will be
|
|
altered according to the provided information in the password file.
|
|
|
|
Boot loader configuration
|
|
=========================
|
|
|
|
A profile may contain configuration for several boot loaders. These reside in specific top-level directories, which are
|
|
explained in the following subsections.
|
|
|
|
The following *custom template identifiers* are understood and will be replaced according to the assignments of the
|
|
respective variables in ``profiledef.sh``:
|
|
|
|
* ``%ARCHISO_LABEL%``: Set this using the ``iso_label`` variable in ``profiledef.sh``.
|
|
* ``%INSTALL_DIR%``: Set this using the ``iso_label`` variable in ``profiledef.sh``.
|
|
* ``%ARCH%``: Set this using the ``arch`` variable in ``profiledef.sh``.
|
|
|
|
|
|
efiboot
|
|
-------
|
|
|
|
This directory is mandatory when the ``uefi-x64.systemd-boot.esp`` or ``uefi-x64.systemd-boot.eltorito`` bootmodes are
|
|
selected in ``profiledef.sh``. It contains configuration for `systemd-boot
|
|
<https://www.freedesktop.org/wiki/Software/systemd/systemd-boot/>`_.
|
|
|
|
.. note::
|
|
|
|
The directory is a top-level representation of the systemd-boot configuration directories and files found in the
|
|
root of an EFI system partition.
|
|
|
|
The *custom template identifiers* are **only** understood in the boot loader entry `.conf` files (i.e. **not** in
|
|
``loader.conf``).
|
|
|
|
syslinux
|
|
--------
|
|
|
|
This directory is mandatory when the ``bios.syslinux.mbr`` or the ``bios.syslinux.eltorito`` bootmodes are selected in
|
|
``profiledef.sh``.
|
|
It contains configuration files for `syslinux <https://wiki.syslinux.org/wiki/index.php?title=SYSLINUX>`_ or `isolinux
|
|
<https://wiki.syslinux.org/wiki/index.php?title=ISOLINUX>`_ , or `pxelinux
|
|
<https://wiki.syslinux.org/wiki/index.php?title=PXELINUX>`_ used in the resuling image.
|
|
|
|
The *custom template identifiers* are understood in all `.cfg` files in this directory.
|