is there a way to provide post-mount and pre-umount scripts in Linux?
I am trying to do some scripts on storage media when mounted and before umounting (eg, for synching).
Any help appreciated.
linuxmountscriptstorage
is there a way to provide post-mount and pre-umount scripts in Linux?
I am trying to do some scripts on storage media when mounted and before umounting (eg, for synching).
Any help appreciated.
Best Answer
If you are trying to do this for people invoking the
/sbin/mount
and/sbin/umount
command, all you'd have to do is make a wrapper program for both and program what you want into these wrapper programs.A wrapper program being replace the
/sbin/mount
with the wrapper program that calls the real/sbin/mount
(renamed to something like/sbin/mount-real
or/sbin/umount-real
). To prevent anybody from calling the real program, use group permissions to restrict it and set the SGID bit on the wrapper programs.If you are looking to fix the
mount(2)
library call, well that is an effort and probably difficult and probably not advisable as this could cause problems for internal systems processing especially during startup and shutdown.Even with a wrapper program you'd probably have to thoroughly test it to avoid system interference and made appropriate adjustments.