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List:       kde-devel
Subject:    KDE libs (kio_file) holding on to files and directories during
From:       Luke Kenneth Casson Leighton <lkcl () lkcl ! net>
Date:       2004-09-21 19:57:55
Message-ID: 20040921195755.GF1105 () lkcl ! net
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how - coding-wise - do i switch this off?

i have a situation where HAL is forcibly umounting a USB card (umount -l)
but there is a chance - with KDE Volume Manager - to receive
notifications before this actually happens.

therefore i am starting to hunt through the code looking for where
i can send these notifications, in order to force programs (such as
konqueror) to stop messing about.

i notice with interest that kio_floppy doesn't actually touch the floppy
drive itself, it uses mtools: this is, as a last resort, what i would
have to code up in a replacement for kio_file (!!!) calling ls, cat,
mkdir, rmdir, rm and /usr/bin/stat.

badly badly drastic, i know, but it would DoTheJob(tm).

the other drastic option which i have presently added into HAL's
code is to do this, just before the unmount:

	system("lsof %s | sort | uniq | xargs kill -TERM",
	        device_mount_point)

this is, again, utterly utterly drastic - but it cleanly (by cutting off
at the knees) solves the problem: not much would be expected to survive
and users would get used to programs disappearing from under them if
they didn't close them down properly...

... but it's not really a nice solution.



so, i notice that there's kdiroperator.cpp and as a test i am switching
off setAutoUpdate() to see what happens.

if _that_ works then i will have a clue: to switch off the Directory
Notifying.

then i was thinking of tracking down a method to tell the Directory
Notifying that it should no longer "watch" a mountpoint (via a DCOP
interface into konqueror?  KDirNotify-1/2?)

am i along the right lines, and will it help?

l.

-- 
--
Truth, honesty and respect are rare commodities that all spring from
the same well: Love.  If you love yourself and everyone and everything
around you, funnily and coincidentally enough, life gets a lot better.
--
<a href="http://lkcl.net">      lkcl.net      </a> <br />
<a href="mailto:lkcl@lkcl.net"> lkcl@lkcl.net </a> <br />

 
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