Re: unlinking
Re: unlinking
- Subject: Re: unlinking
- From: "Gerriet M. Denkmann" <email@hidden>
- Date: Wed, 15 Oct 2008 19:15:30 +0200
On 15 Oct 2008, at 16:34, Quinn wrote:
At 14:02 +0200 15/10/08, Gerriet M. Denkmann wrote:
When one does unlink(someFile) and this file is open in some other
program, it will be moved to HFS+ Private Data/temp123456 (or
something like this).
Is it possible to check for this (file is open in some other
program) without using lsof -F and parsing the result?
Normally folks ask the exact opposite of this question. Have you
looked at the discussion in QA1497? Is that helpful to you?
<http://developer.apple.com/qa/qa2006/qa1497.html>
Thanks for this link; it was indeed helpful.
The problem I am trying to solve is a program which messes with
files; it loops over all files in a partition, copies all fragmented
files to a new location (space permitting) then deletes the old file.
Using unlink creates problems: some app continues to write into the
file (now called ...temp4567), which will be deleted (and changes
lost) when the app closes this file.
Using FSDeleteObject instead would be a step forward: in this case
one would delete the _new_ copy if one got a fBsyErr. But this would
happen _after_ one has already copied the stuff. Looks a bit wasteful.
So: is there some (fast) way to check whether some process has a
given file open for writing or updating?
Kind regards,
Gerriet.
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| References: | |
| | >unlinking (From: "Gerriet M. Denkmann" <email@hidden>) |
| | >Re: unlinking (From: Quinn <email@hidden>) |