bin/138146: [patch] w(1) and pkill(1) don't work on core files without specifying -N

[Bruce Cran]

>Number:         138146
>Category:       bin
>Synopsis:       [patch] w(1) and pkill(1) don't work on core files without specifying -N
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Aug 24 19:30:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Bruce Cran
>Release:        8.0-BETA3
>Organization:
>Environment:
>Description:
w(1) and pkill(3) don't work on core files unless -N is specified because they initialize the execfile option to kvm_open or kvm_openfiles to "/dev/null" when it should be NULL.
>How-To-Repeat:
run 'w' or 'pkill' with the '-M' option without specifying '-N'.
>Fix:
http://www.cran.org.uk/~brucec/freebsd/pkill.c.diff
http://www.cran.org.uk/~brucec/freebsd/w.c.diff

>Release-Note:
>Audit-Trail:
>Unformatted: