{bb} DF of read-locked partitions

[System Administrator <walter@asf.alaska.edu>]

On a couple of my systems the 'df' command give a "permission denied"
error for certain partitions because non-root users don't even have
permission to check the disk usage of these mountpoints. I've hacked
bbsys.local to redefine DF to include a list of safe partitions but
this only works so long as the filesystem structure isn't modified.

This illustrates the problem:

124$ who am i
bbuser     pts/2        Aug 16 09:53    (0:0)

125$ df -lk
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/md/dsk/d2       5040814  779581 4210825    16%    /
/dev/md/dsk/d5       5040814 1616608 3373798    33%    /usr
/proc                      0       0       0     0%    /proc
fd                         0       0       0     0%    /dev/fd
mnttab                     0       0       0     0%    /etc/mnttab
/dev/md/dsk/d11      10080200 1277386 8702012    13%    /var
swap                 3677296      16 3677280     1%    /var/run
swap                 3677528     248 3677280     1%    /tmp
/dev/md/dsk/d8       10080200 8667883 1311515    87%    /export/home
/proc                      0       0       0
0%    /var/opt/SUNWbb/root/proc
df: cannot statvfs /var/opt/SUNWbb/root/tmp/SUNWut/sessions: Permission
denied
df: cannot statvfs /var/opt/SUNWbb/root/tmp/SUNWut/units: Permission
denied

// This is the command I've used to redefine DF:
126$ df -kl / /usr /var /var/run /tmp /export/home
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/md/dsk/d2       5040814  779581 4210825    16%    /
/dev/md/dsk/d5       5040814 1616608 3373798    33%    /usr
/dev/md/dsk/d11      10080200 1277386 8702012    13%    /var
swap                 3677512      16 3677496     1%    /var/run
swap                 3677744     248 3677496     1%    /tmp
/dev/md/dsk/d8       10080200 8667883 1311515    87%    /export/home

It's ugly but two commands, a DF to identify read-locked partitions
followed by a second command filter to create the final list, would
work but it also might exclude some of the problems I want to monitor.
Changing the permissions on the directories or adding bbuser to the
root group probably are bad ideas for security reasons. Can you think
of a better way to accomplish this?

Thanks,

  Walter R.

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