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authorKalle Lampila <kalle.lampila@lempea.com>2019-12-31 17:10:49 +0200
committerRichard Purdie <richard.purdie@linuxfoundation.org>2020-01-02 16:39:13 +0000
commitb14588a77842f41613bd251165cce5bc95a708ad (patch)
tree91ac142b3498dbddf3b907d449e9d5fb121beb3c /scripts/lib/wic
parentad803a3c7627b57dd3dd1654823582f17f13ceaf (diff)
downloadpoky-b14588a77842f41613bd251165cce5bc95a708ad.tar.gz
wic/filemap: If FIGETBSZ iotctl fail, failback to os.stat
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: e219f5175177a640dd62833082ea19adc1c13d42) Signed-off-by: Kalle lampila <kalle.lampila@lempea.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'scripts/lib/wic')
-rw-r--r--scripts/lib/wic/filemap.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/scripts/lib/wic/filemap.py b/scripts/lib/wic/filemap.py
index a3919fbcad..c53147c2f1 100644
--- a/scripts/lib/wic/filemap.py
+++ b/scripts/lib/wic/filemap.py
@@ -34,9 +34,11 @@ def get_block_size(file_obj):
34 # the FIGETBSZ ioctl (number 2). 34 # the FIGETBSZ ioctl (number 2).
35 try: 35 try:
36 binary_data = fcntl.ioctl(file_obj, 2, struct.pack('I', 0)) 36 binary_data = fcntl.ioctl(file_obj, 2, struct.pack('I', 0))
37 bsize = struct.unpack('I', binary_data)[0]
37 except OSError: 38 except OSError:
38 raise IOError("Unable to determine block size") 39 bsize = None
39 bsize = struct.unpack('I', binary_data)[0] 40
41 # If ioctl causes OSError or give bsize to zero failback to os.fstat
40 if not bsize: 42 if not bsize:
41 import os 43 import os
42 stat = os.fstat(file_obj.fileno()) 44 stat = os.fstat(file_obj.fileno())