bin/41541: df -P is broken on netbsd-5

[lguillaume%berklee.edu@localhost]

>Number:         41541
>Category:       bin
>Synopsis:       df is broken with the -P option
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 04 17:30:00 +0000 2009
>Originator:     Louis Guillaume
>Release:        NetBSD 5.0_STABLE
>Organization:
        
>Environment:
        
        
System: NetBSD shodo.berklee.net 5.0_STABLE NetBSD 5.0_STABLE (GENERIC) #7: Fri 
May 1 18:09:20 EDT 2009 
louis%shodo.berklee.net@localhost:/usr/obj/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:
        
The df -P command is broken. For example, on this system:

  $ df -Pk /
  Filesystem 1024-blocks Used Available Capacity Mounted on
  /dev/wd0a 4068920 953824 2911656 24% /

  $ df -k /
  Filesystem   1K-blocks       Used      Avail %Cap Mounted on
  /dev/wd0a        508615     119228     363957  24% /

  $ df -Pm /
  df: non-standard block size incompatible with -P


Notice that the amounts are incorrect when using the -P option.

This problem does not happen on a netbsd-4 machine.

I'm quite sure the problem is with -P and not without it. But to be honest,
this is an assumption, as df is my only way of checking this now. And the
-m option to df fails with -P, so -P becomes suspect. df -Pm works on netbsd-4
as it does on other platforms (AIX, Darwin, Linux).

I tested on 2 different netbsd-5 machines and see the same problem.

>How-To-Repeat:
        

Try the df command with the -P option.

>Fix:
        

>Unformatted: