Re: pread and EACCES error?
Re: pread and EACCES error?
- Subject: Re: pread and EACCES error?
- From: Terry Lambert <email@hidden>
- Date: Thu, 21 May 2009 00:32:52 -0700
There is nothing directly in the normal code path that does kauth
checks after the open is successful. So it's your driver or your
code. Is you code multithreaded? If so, does it serialize the close?
-- Terry
On May 20, 2009, at 2:55 AM, Brian Bergstrand wrote:
Hi all, I'm seeing a weird error from pread in the following setup:
Copying from a 300GB PATA drive connected via USB to another 300GB
ATA drive connected via Firewire using the raw char devices for
each. After copying about 37GB of data, pread fails on the source
USB drive with EACCES (13). According to the man page, this is not a
valid error return (although the man page may be out of date).
The copy is done in DKIOCGETMAXBLOCKCOUNTREAD chunks (128KB for ATA).
So where is the EACCES coming from? The IOKit block drivers? And
what does it mean in this situation?
Mac OS X 10.5.7 (Darwin 9.7) on Intel.
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