Jeff Moyer wrote:
==> Regarding Re: [autofs] nonroot umount; Peter Staubach <[EMAIL PROTECTED]>
adds:
staubach> Marcos Diez wrote:
In a Unix desktop system automount is very practical for CDROMs, digital
cameras, USB flash drives and any other type of removable media.
But it is annoying to the unprivileged user to wait the timeout to
remove the media.
Since it is insecure to allow the user to do a "killall -s SIGUSR1
automount", I wrote a program that does exactly (and only) that. Of
course it must be suid root, but it makes life much easier. I double
verified that there are no buffer overflows and I believe it's safe. The
program is not interactive, so a malicious user can't do much with it
anyway.
It gets the PIDs from instances of automount by parsing /proc/mounts
It would be nice if it could be added to the autofs distribution.
http://boby.unitron.com.br/%7Emarcos/umounter.c
To compile:
gcc -O3 -ansi -Wall -pedantic umounter.c -o umounter
To install:
cp umounter /usr/local/bin && chmod 4711 /usr/local/bin/umounter
To use:
./umounter
or
./umounter --verbose
(show the signaled PIDs )
staubach> It seems to me that a better architected solution might be to tie in
staubach> the automounter with the eject(1) sort of command.
staubach> It is not good for a user to have to know that he needs to zing the
staubach> automounter in order to remove his media.
What "desktop" system are we talking about? If you're using hal/udev, then
they have a much nicer mechanism for handling such things. Autofs isn't
really a good fit for removable media, in my experience.
Cool!
My only objection was building tools to utilize automount specific
implementation details. That's just wrong.
Perhaps we need to redirect Marcos Diez to better functionality to
solve his problems... :-)
Thanx...
ps
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