diff options
| -rw-r--r-- | scripts/lib/wic/filemap.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/scripts/lib/wic/filemap.py b/scripts/lib/wic/filemap.py index 244c07a71c..a3919fbcad 100644 --- a/scripts/lib/wic/filemap.py +++ b/scripts/lib/wic/filemap.py @@ -32,7 +32,10 @@ def get_block_size(file_obj): """ # Get the block size of the host file-system for the image file by calling # the FIGETBSZ ioctl (number 2). - binary_data = fcntl.ioctl(file_obj, 2, struct.pack('I', 0)) + try: + binary_data = fcntl.ioctl(file_obj, 2, struct.pack('I', 0)) + except OSError: + raise IOError("Unable to determine block size") bsize = struct.unpack('I', binary_data)[0] if not bsize: import os |