Re: misc/53145: Improved POSIX and X/OPEN conformance (/etc/rc.subr)

[Bruce Lilly <bruce.lilly%gmail.com@localhost>]

The following reply was made to PR misc/53145; it has been noted by GNATS.

From: Bruce Lilly <bruce.lilly%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: misc-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: misc/53145: Improved POSIX and X/OPEN conformance (/etc/rc.subr)
Date: Sun, 1 Apr 2018 07:32:36 -0400

 On Sun, Apr 1, 2018 at 3:20 AM, Robert Elz <kre%munnari.oz.au@localhost> wrote:
 > The following reply was made to PR misc/53145; it has been noted by GNATS.
 >
 > From: Robert Elz <kre%munnari.OZ.AU@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc:
 > Subject: Re: misc/53145: Improved POSIX and X/OPEN conformance (/etc/rc.subr)
 > Date: Sun, 01 Apr 2018 14:16:43 +0700
 >
 >      Date:        Sun,  1 Apr 2018 04:40:01 +0000 (UTC)
 >      From:        bruce.lilly%gmail.com@localhost
 >      Message-ID:  <20180401044001.0628C7A212%mollari.NetBSD.org@localhost>
 >
 >    | Change of '-ax' to '-A' is reported on the NetBSD /bin/ps man page as equivalent
 >
 >  Yes, -ax and -A are the same and that can be changed.
 >
 >    | Change of '-o pid,command' to '-o pid,comm' is supported by NetBSD /bin/ps
 >    | (although it is undocumented) and conforms to POSIX and X/OPEN standards.
 >
 >  It is documented (at least as far back as NetBSD 6) but does not mean the
 >  same thing, NetBSD's "comm" is the same as the POSIX "comm", whereas
 >  NetBSD's "command" is the same as POSIX "args" (which is also supported
 >  on NetBSD as an alias for "command") so if  you can verify that changing it
 >  from "pid,command" to "pid,args" works for you (with the heirloom version of
 >  ps in use) I cannot see any reason we should not make that change.
 
 It works for me (output same except for whitespace, which won't affect
 operation):
 
 root@e2500sa:/root# /bin/ps -p 1 -o pid,args
 PID COMMAND
   1 init
 root@e2500sa:/root# /usr/pkg/heirloom/bin/ps -p 1 -o pid,args
   PID COMMAND
     1 init
 root@e2500sa:/root# /usr/pkg/heirloom/bin/posix/ps -p 1 -o pid,args
   PID COMMAND
     1 init
 root@e2500sa:/root# /usr/pkg/heirloom/bin/posix2001/ps -p 1 -o pid,args
   PID COMMAND
     1 init
 root@e2500sa:/root# /usr/pkg/heirloom/bin/s42/ps -p 1 -o pid,args
   PID COMMAND
     1 init
 
 >  I doubt that a pullup to -6 or -7 is warranted though (and perhaps not even -8)
 >
 >  kre
 
 FYI, I looked briefly at the version (1.100) of rc.subr in -current
 (a.k.a. -8), and
 I believe the patch should work for that version also [ultimately, the
 script calls
 ps via _find_processes either with -p <pid> or -A (-ax) in addition to
 the output
 (-o ...) args].