Merge branch 'project-overhaul' into dev

This commit is contained in:
2Shirt 2020-01-23 14:12:04 -07:00
commit dc97fb079d
Signed by: 2Shirt
GPG key ID: 152FAC923B0E132C
2 changed files with 74 additions and 63 deletions

View file

@ -53,6 +53,7 @@ def build_ufd():
args = docopt(DOCSTRING)
log.update_log_path(dest_name='build-ufd', timestamp=True)
try_print = std.TryAndPrint()
try_print.catch_all = False
try_print.indent = 2
# Check if running with root permissions
@ -75,7 +76,29 @@ def build_ufd():
# Prep UFD
if not args['--update']:
std.print_info('Prep UFD')
prep_device(ufd_dev, UFD_LABEL, use_mbr=args['--use-mbr'])
try_print.run(
message='Zeroing first 64MiB...',
function=zero_device,
dev_path=ufd_dev,
)
try_print.run(
message='Creating partition table...',
function=create_table,
dev_path=ufd_dev,
use_mbr=args['--use-mbr'],
)
try_print.run(
message='Setting boot flag...',
function=set_boot_flag,
dev_path=ufd_dev,
use_mbr=args['--use-mbr'],
)
try_print.run(
message='Formatting partition...',
function=format_partition,
dev_path=ufd_dev,
label=UFD_LABEL,
)
# Mount UFD
try_print.run(
@ -195,6 +218,19 @@ def copy_source(source, items, overwrite=False):
linux.unmount('/mnt/Source')
def create_table(dev_path, use_mbr=False):
"""Create GPT or DOS partition table."""
cmd = [
'parted', dev_path,
'--script',
'--',
'mklabel', 'msdos' if use_mbr else 'gpt',
'mkpart', 'primary', 'fat32', '4MiB',
'-1s' if use_mbr else '-4MiB',
]
run_program(cmd)
def find_first_partition(dev_path):
"""Find path to first partition of dev, returns str.
@ -218,6 +254,17 @@ def find_first_partition(dev_path):
return part_path
def format_partition(dev_path, label):
"""Format first partition on device FAT32."""
cmd = [
'mkfs.vfat',
'-F', '32',
'-n', label,
find_first_partition(dev_path),
]
run_program(cmd)
def get_uuid(path):
"""Get filesystem UUID via findmnt, returns str."""
cmd = [
@ -288,66 +335,15 @@ def is_valid_path(path_obj, path_type):
return valid_path
def prep_device(dev_path, label, use_mbr=False):
"""Format device in preparation for applying the WizardKit components
This is done is four steps:
1. Zero-out first 64MB (this deletes the partition table and/or bootloader)
2. Create a new partition table (GPT by default, optionally MBR)
3. Set boot flag
4. Format partition (FAT32, 4K aligned)
"""
try_print = std.TryAndPrint()
try_print.indent = 2
def _create_table():
"""Create GPT or DOS partition table."""
cmd = [
'parted', dev_path,
'--script',
'--',
'mklabel', 'msdos' if use_mbr else 'gpt',
'mkpart', 'primary', 'fat32', '4MiB',
'-1s' if use_mbr else '-4MiB',
]
run_program(cmd)
def _format_partition():
"""Format first partition on device FAT32."""
cmd = [
'mkfs.vfat',
'-F', '32',
'-n', label,
find_first_partition(dev_path),
]
run_program(cmd)
def _set_boot_flag():
"""Set modern or legacy boot flag."""
cmd = [
'parted', dev_path,
'set', '1',
'boot' if use_mbr else 'legacy_boot',
'on',
]
run_program(cmd)
def _zero_device():
"""Zero-out first 64MB of device."""
cmd = [
'dd',
'bs=4M',
'count=16',
'if=/dev/zero',
f'of={dev_path}',
]
run_program(cmd)
# Run steps
try_print.run('Zeroing first 64MiB...', function=_zero_device)
try_print.run('Creating partition table...', function=_create_table)
try_print.run('Setting boot flag...', function=_set_boot_flag)
try_print.run('Formatting partition...', function=_format_partition)
def set_boot_flag(dev_path, use_mbr=False):
"""Set modern or legacy boot flag."""
cmd = [
'parted', dev_path,
'set', '1',
'boot' if use_mbr else 'legacy_boot',
'on',
]
run_program(cmd)
def remove_arch():
@ -480,5 +476,17 @@ def verify_ufd(dev_path):
return ufd_dev
def zero_device(dev_path):
"""Zero-out first 64MB of device."""
cmd = [
'dd',
'bs=4M',
'count=16',
'if=/dev/zero',
f'of={dev_path}',
]
run_program(cmd)
if __name__ == '__main__':
print("This file is not meant to be called directly.")

View file

@ -392,6 +392,7 @@ class TryAndPrint():
based on exception names.
"""
def __init__(self, msg_bad='FAILED', msg_good='SUCCESS'):
self.catch_all = True
self.indent = INDENT
self.msg_bad = msg_bad
self.msg_good = msg_good
@ -522,13 +523,13 @@ class TryAndPrint():
def run(
self, message, function, *args,
catch_all=True, msg_good=None, verbose=False, **kwargs):
catch_all=None, msg_good=None, verbose=False, **kwargs):
# pylint: disable=catching-non-exception
"""Run a function and print the results, returns results as dict.
If catch_all is True then (nearly) all exceptions will be caught.
Otherwise if an exception occurs that wasn't specified it will be
re-raised.
re-raised. If passed it will override self.catch_all for this call.
If the function returns data it will be used instead of msg_good,
msg_bad, or exception text.
@ -553,6 +554,8 @@ class TryAndPrint():
f_exception = None
output = None
result_msg = 'UNKNOWN'
if catch_all is None:
catch_all = self.catch_all
# Build exception tuples
e_exceptions = tuple(self._get_exception(e) for e in self.list_errors)