import getpass, time, json, sys, signal, os, subprocess import archinstall """ This signal-handler chain (and global variable) is used to trigger the "Are you sure you want to abort?" question further down. It might look a bit odd, but have a look at the line: "if SIG_TRIGGER:" """ SIG_TRIGGER = False def kill_handler(sig, frame): print() exit(0) def sig_handler(sig, frame): global SIG_TRIGGER SIG_TRIGGER = True signal.signal(signal.SIGINT, kill_handler) original_sigint_handler = signal.getsignal(signal.SIGINT) signal.signal(signal.SIGINT, sig_handler) if archinstall.arguments.get('help'): print("See `man archinstall` for help.") exit(0) def ask_user_questions(): """ First, we'll ask the user for a bunch of user input. Not until we're satisfied with what we want to install will we continue with the actual installation steps. """ if not archinstall.arguments.get('keyboard-language', None): archinstall.arguments['keyboard-language'] = archinstall.select_language(archinstall.list_keyboard_languages()).strip() # Before continuing, set the preferred keyboard layout/language in the current terminal. # This will just help the user with the next following questions. if len(archinstall.arguments['keyboard-language']): archinstall.set_keyboard_language(archinstall.arguments['keyboard-language']) # Set which region to download packages from during the installation if not archinstall.arguments.get('mirror-region', None): archinstall.arguments['mirror-region'] = archinstall.select_mirror_regions(archinstall.list_mirrors()) else: selected_region = archinstall.arguments['mirror-region'] archinstall.arguments['mirror-region'] = {selected_region : archinstall.list_mirrors()[selected_region]} # Ask which harddrive/block-device we will install to if archinstall.arguments.get('harddrive', None): archinstall.arguments['harddrive'] = archinstall.BlockDevice(archinstall.arguments['harddrive']) else: archinstall.arguments['harddrive'] = archinstall.select_disk(archinstall.all_disks()) # Perform a quick sanity check on the selected harddrive. # 1. Check if it has partitions # 3. Check that we support the current partitions # 2. If so, ask if we should keep them or wipe everything if archinstall.arguments['harddrive'].has_partitions(): archinstall.log(f"{archinstall.arguments['harddrive']} contains the following partitions:", fg='yellow') # We curate a list pf supported partitions # and print those that we don't support. partition_mountpoints = {} for partition in archinstall.arguments['harddrive']: try: if partition.filesystem_supported(): archinstall.log(f" {partition}") partition_mountpoints[partition] = None except archinstall.UnknownFilesystemFormat as err: archinstall.log(f" {partition} (Filesystem not supported)", fg='red') # We then ask what to do with the partitions. if (option := archinstall.ask_for_disk_layout()) == 'abort': archinstall.log(f"Safely aborting the installation. No changes to the disk or system has been made.") exit(1) elif option == 'keep-existing': archinstall.arguments['harddrive'].keep_partitions = True archinstall.log(f" ** You will now select which partitions to use by selecting mount points (inside the installation). **") archinstall.log(f" ** The root would be a simple / and the boot partition /boot (as all paths are relative inside the installation). **") while True: # Select a partition partition = archinstall.generic_select(partition_mountpoints.keys(), "Select a partition by number that you want to set a mount-point for (leave blank when done): ") if not partition: break # Select a mount-point mountpoint = input(f"Enter a mount-point for {partition}: ").strip(' ') if len(mountpoint): # Get a valid & supported filesystem for the partition: while 1: new_filesystem = input(f"Enter a valid filesystem for {partition} (leave blank for {partition.filesystem}): ").strip(' ') if len(new_filesystem) <= 0: if partition.encrypted and partition.filesystem == 'crypto_LUKS': old_password = archinstall.arguments.get('!encryption-password', None) if not old_password: old_password = input(f'Enter the old encryption password for {partition}: ') if (autodetected_filesystem := partition.detect_inner_filesystem(old_password)): new_filesystem = autodetected_filesystem else: archinstall.log(f"Could not auto-detect the filesystem inside the encrypted volume.", fg='red') archinstall.log(f"A filesystem must be defined for the unlocked encrypted partition.") continue break # Since the potentially new filesystem is new # we have to check if we support it. We can do this by formatting /dev/null with the partitions filesystem. # There's a nice wrapper for this on the partition object itself that supports a path-override during .format() try: partition.format(new_filesystem, path='/dev/null', log_formating=False, allow_formatting=True) except archinstall.UnknownFilesystemFormat: archinstall.log(f"Selected filesystem is not supported yet. If you want archinstall to support '{new_filesystem}', please create a issue-ticket suggesting it on github at https://github.com/archlinux/archinstall/issues.") archinstall.log(f"Until then, please enter another supported filesystem.") continue except archinstall.SysCallError: pass # Expected exception since mkfs. can not format /dev/null. # But that means our .format() function supported it. break # When we've selected all three criteria, # We can safely mark the partition for formatting and where to mount it. # TODO: allow_formatting might be redundant since target_mountpoint should only be # set if we actually want to format it anyway. partition.allow_formatting = True partition.target_mountpoint = mountpoint # Only overwrite the filesystem definition if we selected one: if len(new_filesystem): partition.filesystem = new_filesystem archinstall.log('Using existing partition table reported above.') elif option == 'format-all': archinstall.arguments['filesystem'] = archinstall.ask_for_main_filesystem_format() archinstall.arguments['harddrive'].keep_partitions = False else: # If the drive doesn't have any partitions, safely mark the disk with keep_partitions = False # and ask the user for a root filesystem. archinstall.arguments['filesystem'] = archinstall.ask_for_main_filesystem_format() archinstall.arguments['harddrive'].keep_partitions = False # Get disk encryption password (or skip if blank) if not archinstall.arguments.get('!encryption-password', None): if (passwd := archinstall.get_password(prompt='Enter disk encryption password (leave blank for no encryption): ')): archinstall.arguments['!encryption-password'] = passwd archinstall.arguments['harddrive'].encryption_password = archinstall.arguments['!encryption-password'] # Get the hostname for the machine if not archinstall.arguments.get('hostname', None): archinstall.arguments['hostname'] = input('Desired hostname for the installation: ').strip(' ') # Ask for a root password (optional, but triggers requirement for super-user if skipped) if not archinstall.arguments.get('!root-password', None): archinstall.arguments['!root-password'] = archinstall.get_password(prompt='Enter root password (Recommendation: leave blank to leave root disabled): ') # Ask for additional users (super-user if root pw was not set) archinstall.arguments['users'] = {} archinstall.arguments['superusers'] = {} if not archinstall.arguments.get('!root-password', None): archinstall.arguments['superusers'] = archinstall.ask_for_superuser_account('Create a required super-user with sudo privileges: ', forced=True) users, superusers = archinstall.ask_for_additional_users('Enter a username to create a additional user (leave blank to skip & continue): ') archinstall.arguments['users'] = users archinstall.arguments['superusers'] = {**archinstall.arguments['superusers'], **superusers} # Ask for archinstall-specific profiles (such as desktop environments etc) if not archinstall.arguments.get('profile', None): archinstall.arguments['profile'] = archinstall.select_profile(archinstall.list_profiles()) else: archinstall.arguments['profile'] = archinstall.list_profiles()[archinstall.arguments['profile']] # Check the potentially selected profiles preparations to get early checks if some additional questions are needed. if archinstall.arguments['profile'] and archinstall.arguments['profile'].has_prep_function(): with archinstall.arguments['profile'].load_instructions(namespace=f"{archinstall.arguments['profile'].namespace}.py") as imported: if not imported._prep_function(): archinstall.log( ' * Profile\'s preparation requirements was not fulfilled.', fg='red' ) exit(1) # Additional packages (with some light weight error handling for invalid package names) if not archinstall.arguments.get('packages', None): print("Packages not part of the desktop environment are not installed by default.") print("If you desire a web browser, such as firefox or chromium, you may specify it in the following prompt.") archinstall.arguments['packages'] = [package for package in input('Write additional packages to install (space separated, leave blank to skip): ').split(' ') if len(package)] # Verify packages that were given try: archinstall.validate_package_list(archinstall.arguments['packages']) except archinstall.RequirementError as e: archinstall.log(e, fg='red') exit(1) # Ask or Call the helper function that asks the user to optionally configure a network. if not archinstall.arguments.get('nic', None): archinstall.arguments['nic'] = archinstall.ask_to_configure_network() if not archinstall.arguments['nic']: archinstall.log(f"No network configuration was selected. Network is going to be unavailable until configured manually!", fg="yellow") if not archinstall.arguments.get('timezone', None): archinstall.arguments['timezone'] = archinstall.ask_for_a_timezone() def perform_installation_steps(): global SIG_TRIGGER print() print('This is your chosen configuration:') archinstall.log("-- Guided template chosen (with below config) --", level=archinstall.LOG_LEVELS.Debug) archinstall.log(json.dumps(archinstall.arguments, indent=4, sort_keys=True, cls=archinstall.JSON), level=archinstall.LOG_LEVELS.Info) print() input('Press Enter to continue.') """ Issue a final warning before we continue with something un-revertable. We mention the drive one last time, and count from 5 to 0. """ print(f" ! Formatting {archinstall.arguments['harddrive']} in ", end='') for i in range(5, 0, -1): print(f"{i}", end='') for x in range(4): sys.stdout.flush() time.sleep(0.25) print(".", end='') if SIG_TRIGGER: abort = input('\nDo you really want to abort (y/n)? ') if abort.strip() != 'n': exit(0) if SIG_TRIGGER is False: sys.stdin.read() SIG_TRIGGER = False signal.signal(signal.SIGINT, sig_handler) # Put back the default/original signal handler now that we're done catching # and interrupting SIGINT with "Do you really want to abort". print() signal.signal(signal.SIGINT, original_sigint_handler) """ Setup the blockdevice, filesystem (and optionally encryption). Once that's done, we'll hand over to perform_installation() """ with archinstall.Filesystem(archinstall.arguments['harddrive'], archinstall.GPT) as fs: # Wipe the entire drive if the disk flag `keep_partitions`is False. if archinstall.arguments['harddrive'].keep_partitions is False: fs.use_entire_disk(root_filesystem_type=archinstall.arguments.get('filesystem', 'btrfs')) # Check if encryption is desired and mark the root partition as encrypted. if archinstall.arguments.get('!encryption-password', None): root_partition = fs.find_partition('/') root_partition.encrypted = True # After the disk is ready, iterate the partitions and check # which ones are safe to format, and format those. for partition in archinstall.arguments['harddrive']: if partition.safe_to_format(): # Partition might be marked as encrypted due to the filesystem type crypt_LUKS # But we might have omitted the encryption password question to skip encryption. # In which case partition.encrypted will be true, but passwd will be false. if partition.encrypted and (passwd := archinstall.arguments.get('!encryption-password', None)): partition.encrypt(password=passwd) else: partition.format() else: archinstall.log(f"Did not format {partition} because .safe_to_format() returned False or .allow_formatting was False.", level=archinstall.LOG_LEVELS.Debug) if archinstall.arguments.get('!encryption-password', None): # First encrypt and unlock, then format the desired partition inside the encrypted part. # archinstall.luks2() encrypts the partition when entering the with context manager, and # unlocks the drive so that it can be used as a normal block-device within archinstall. with archinstall.luks2(fs.find_partition('/'), 'luksloop', archinstall.arguments.get('!encryption-password', None)) as unlocked_device: unlocked_device.format(fs.find_partition('/').filesystem) perform_installation(device=unlocked_device, boot_partition=fs.find_partition('/boot'), language=archinstall.arguments['keyboard-language'], mirrors=archinstall.arguments['mirror-region']) else: perform_installation(device=fs.find_partition('/'), boot_partition=fs.find_partition('/boot'), language=archinstall.arguments['keyboard-language'], mirrors=archinstall.arguments['mirror-region']) def perform_installation(device, boot_partition, language, mirrors): """ Performs the installation steps on a block device. Only requirement is that the block devices are formatted and setup prior to entering this function. """ with archinstall.Installer(device, boot_partition=boot_partition, hostname=archinstall.arguments.get('hostname', 'Archinstall')) as installation: ## if len(mirrors): # Certain services might be running that affects the system during installation. # Currently, only one such service is "reflector.service" which updates /etc/pacman.d/mirrorlist # We need to wait for it before we continue since we opted in to use a custom mirror/region. installation.log(f'Waiting for automatic mirror selection has completed before using custom mirrors.') while 'dead' not in (status := archinstall.service_state('reflector')): time.sleep(1) archinstall.use_mirrors(mirrors) # Set the mirrors for the live medium if installation.minimal_installation(): installation.set_mirrors(mirrors) # Set the mirrors in the installation medium installation.set_keyboard_language(language) installation.add_bootloader() # If user selected to copy the current ISO network configuration # Perform a copy of the config if archinstall.arguments.get('nic', None) == 'Copy ISO network configuration to installation': installation.copy_ISO_network_config(enable_services=True) # Sources the ISO network configuration to the install medium. # Otherwise, if a interface was selected, configure that interface elif archinstall.arguments.get('nic', None): installation.configure_nic(**archinstall.arguments.get('nic', {})) installation.enable_service('systemd-networkd') installation.enable_service('systemd-resolved') if archinstall.arguments.get('packages', None) and archinstall.arguments.get('packages', None)[0] != '': installation.add_additional_packages(archinstall.arguments.get('packages', None)) if archinstall.arguments.get('profile', None): installation.install_profile(archinstall.arguments.get('profile', None)) for user, user_info in archinstall.arguments.get('users', {}).items(): installation.user_create(user, user_info["!password"], sudo=False) for superuser, user_info in archinstall.arguments.get('superusers', {}).items(): installation.user_create(superuser, user_info["!password"], sudo=True) if (timezone := archinstall.arguments.get('timezone', None)): installation.set_timezone(timezone) if (root_pw := archinstall.arguments.get('!root-password', None)) and len(root_pw): installation.user_set_pw('root', root_pw) ask_user_questions() perform_installation_steps()