diff options
| -rw-r--r-- | src/utils/disk.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/utils/disk.py b/src/utils/disk.py index e26983c..f4dc0ce 100644 --- a/src/utils/disk.py +++ b/src/utils/disk.py @@ -34,3 +34,27 @@ def get_partition_device(disknum, partnum): return cxt.partition_to_string(pa, fdisk.FDISK_FIELD_DEVICE) raise ValueError('No such partition') + + +def get_efi_partition(disknum): + """ + Look for an EFI System Partition at the n-th disk. If disknum is invalid an exception is thrown + + Returns tuple with: + - Device name containing the ESP + - /dev/{device} string + - Partition number (starting at 1) + """ + try: + disk = get_disks()[disknum-1] + cxt = fdisk.Context(f'/dev/{disk}') + + if cxt.label == fdisk.FDISK_DISKLABEL_DOS: + raise RuntimeError('Disk has DOS partition scheme, cannot find ESP.') + + for pa in cxt.partitions: + if pa.type.name == 'EFI System': + return cxt.partition_to_string(pa, fdisk.FDISK_FIELD_DEVICE), f'/dev/{disk}', pa.partno + 1 + except: + logging.error(f'Unable to find efi partition at disk number {disknum}') + raise |