mirrors/poky
1
0
Fork 0
mirror of https://git.yoctoproject.org/poky synced 2026-04-18 03:32:13 +02:00
Code Issues Packages Projects Releases Wiki Activity

wic/filemap: If FIGETBSZ iotctl fail, failback to os.stat

Browse Source 
Some file systems don't support fetching the block size (notably the
file system Docker uses for containers), so if iotctl() fail, try to use
failback via os.stat() to get block size.

(From OE-Core rev: 996013b4e5d3cd1c054e87539ac1a8d95581a87f)

Signed-off-by: Kalle lampila <kalle.lampila@lempea.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit e219f5175177a640dd62833082ea19adc1c13d42)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Kalle Lampila
2019-12-31 17:10:49 +02:00
committed by Richard Purdie
parent 297debd5ea
commit 88448accde
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
scripts/lib/wic/filemap.py
View File

@@ -34,9 +34,11 @@ def get_block_size(file_obj):
# the FIGETBSZ ioctl (number 2).
try:
binary_data = fcntl.ioctl(file_obj, 2, struct.pack('I', 0))
bsize = struct.unpack('I', binary_data)[0]
except OSError:
raise IOError("Unable to determine block size")
bsize = struct.unpack('I', binary_data)[0]
bsize = None
# If ioctl causes OSError or give bsize to zero failback to os.fstat
if not bsize:
import os
stat = os.fstat(file_obj.fileno())