How to scrub directory only if on own partition/drive?
Hi all,
I've been working on a script to run a disk wipe (using Jim Garlick's scrub tool) on the filesystem in Xerox production printer RIPs.
Easy enough if there's just one partition, but I need to cater for the possibility of multiple drives/partitions, and either ZFS or UFS (don't know if that matters).
I can't quite figure out how to detect whether the second directory is on a separate partition (or even HDDs), and set a string/variable to trigger the process or skip.
e.g., I always want to run against the root, but it's a SLOW process, so only run again if /var/spool/XRXnps is mounted on there's a second partition (or drive)
Also, if it IS on a second HDD, run both scrub processes simultaneously (by backgrounding the first one?).
I hope that's clear (I'll paste my code so far below, but note ../XRXnps directory exists regardless whether under its own partition, or under the root partition).
Cheers, DD
----
Code:
#!/bin/sh
echo "Performing scrub process on root partition..."
/usr/local/bin/scrub -f -p dod -X /junk &
# perform same routine on second partition (if it exists)
if [ -d "/var/spool/XRXnps" ]; then
echo "Performing scrub process on XRXnps partition..."
/usr/local/bin/scrub -p dod -X /var/spool/XRXnps/junk
fi
echo "Disk scrub complete."
Moderator's Comments:
edit by bakunin: if you use "code"- instead of "icode"-tags it is easier to read. "icode" is for single commands within text ./like -this. See?
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LEARN ABOUT PHP
mac_partition
MAC_PARTITION(4) BSD Kernel Interfaces Manual MAC_PARTITION(4)NAME
mac_partition -- process partition policy
SYNOPSIS
To compile the process partition policy into your kernel, place the following lines in your kernel configuration file:
options MAC
options MAC_PARTITION
Alternately, to load the process partition module at boot time, place the following line in your kernel configuration file:
options MAC
and in loader.conf(5):
mac_partition_load="YES"
DESCRIPTION
The mac_partition policy module implements a process partition policy, which allows administrators to place running processes into
``partitions'', based on their numeric process partition (specified in the process's MAC label). Processes with a specified partition can
only see processes that are in the same partition. If no partition is specified for a process, it can see all other processes in the system
(subject to other MAC policy restrictions not defined in this man page). No provisions for placing processes into multiple partitions are
available.
Label Format
Partition labels take on the following format:
partition/value
Where value can be any integer value or ``none''. For example:
partition/1
partition/20
partition/none
SEE ALSO mac(4), mac_biba(4), mac_bsdextended(4), mac_ifoff(4), mac_lomac(4), mac_mls(4), mac_none(4), mac_portacl(4), mac_seeotheruids(4),
mac_test(4), maclabel(7), mac(9)HISTORY
The mac_partition policy module first appeared in FreeBSD 5.0 and was developed by the TrustedBSD Project.
AUTHORS
This software was contributed to the FreeBSD Project by Network Associates Labs, the Security Research Division of Network Associates Inc.
under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program.
BUGS
See mac(9) concerning appropriateness for production use. The TrustedBSD MAC Framework is considered experimental in FreeBSD.
While the MAC Framework design is intended to support the containment of the root user, not all attack channels are currently protected by
entry point checks. As such, MAC Framework policies should not be relied on, in isolation, to protect against a malicious privileged user.
BSD December 9, 2002 BSD
11-29-2012
