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util/iso.py: add FAT payload for EFI

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This commit is contained in:
K. Lange 2018-11-14 13:59:08 +09:00
parent 72f653f915
commit 9ae59ecdb9
1 changed files with 10 additions and 2 deletions
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12
util/iso.py
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@ -164,6 +164,9 @@ class ArbitraryData(object):
struct.pack_into(str(self.size) + 's', data, offset, self.data.tobytes())
return offset + self.size
def make_entry():
return b'\0'*34
class ISO9660(object):
def __init__(self, from_file=None):
@ -182,20 +185,25 @@ class ISO9660(object):
self.volume_descriptor_set_terminator.read(data, 0x12 * 2048)
self.el_torito_catalog.read(data, self.boot_record.data['catalog_lba'] * 2048)
else:
self.boot_payload = ArbitraryData('cdrom/boot.sys')
self.boot_record.set_catalog(0x13)
self.boot_payload = ArbitraryData('cdrom/boot.sys')
self.el_torito_catalog.initial_entry.data['sector_count'] = 24
self.el_torito_catalog.initial_entry.data['load_rba'] = 0x14
self.fat_payload = ArbitraryData('cdrom/fat.img')
self.el_torito_catalog.section.data['sector_count'] = 12288
self.el_torito_catalog.section.data['load_rba'] = 0x14 + 24
self.primary_volume_descriptor.data['root_entry_data'] = make_entry()
def write(self, file_name):
with open(file_name, 'wb') as f:
data = array.array('b',b'\0'*(2048*0x14 + self.boot_payload.size))
data = array.array('b',b'\0'*(2048*0x30 + self.boot_payload.size + self.fat_payload.size))
print(len(data))
self.primary_volume_descriptor.write(data,0x10 * 2048)
self.boot_record.write(data,0x11 * 2048)
self.volume_descriptor_set_terminator.write(data,0x12 * 2048)
self.el_torito_catalog.write(data,0x13 * 2048)
self.boot_payload.write(data,0x14 * 2048)
self.fat_payload.write(data,(0x14 + 24) * 2048)
data.tofile(f)
class ElToritoValidationEntry(Structure):