This is the mail archive of the
mailing list for the Cygwin project.
RE: Size difference reported by /proc/partitions and lseek(SEEK_END) on block device
- From: "Loh, Joe" <joel at pivot3 dot com>
- To: <cygwin at cygwin dot com>
- Date: Wed, 7 Dec 2005 16:50:06 -0600
- Subject: RE: Size difference reported by /proc/partitions and lseek(SEEK_END) on block device
>> On Dec 7 11:17, Loh, Joe wrote:
>> We just installed the cygwin-inst-20051207.tar.bz2 snapshot. The
>> output in //proc/partitions is the same as the Cygwin Kernel 1.5.18.
>> However, the lseek(SEEK_END) no longer works. When I rerun the "C"
>> program it gave the following error. I even recompiled with the new
>> snapshot just to make sure, still the same error. I have also
>> attached the strace output for the lseekend.
>> $ ./lseekend.exe /dev/sda
>> lseek: Invalid argument
> Ouch. Thanks for the report. I have fixed a buggy condition which
only allowed to seek to 1 byte below EOM in CVS. You should see the
change in the next developers snapshot.
>> Here's the output from the snapshot:
>> major minor #blocks name
>> 8 0 78124095 sda
>> 8 1 15358108 sda1
>> 8 2 104422 sda2
>> 8 3 16386300 sda3
> The reason that /proc/partition contains wrong information is that the
/proc/partition information uses an > old, deprecated IOCTL call to
evaluate the disk size by # of cylinders, # of tracks per sektor, etc.
I didn't fix that so far but it's not overly complicated, so stay tuned.
Thank you. We will give the next snapshot a try.
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html