NetBSD Problem Report #43224

From www@NetBSD.org  Thu Apr 29 08:45:15 2010
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Date: Thu, 29 Apr 2010 08:45:15 +0000 (UTC)
From: vs@nifelheim.info
Reply-To: vs@nifelheim.info
To: gnats-bugs@NetBSD.org
Subject: sysutils/cvsreport: is_alive()-function needs to be patched to the correct /proc-path (linux-emulation)
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>Number:         43224
>Category:       pkg
>Synopsis:       sysutils/cvsreport: is_alive()-function needs to be patched to the correct /proc-path (linux-emulation)
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 29 08:50:00 +0000 2010
>Last-Modified:  Thu Apr 29 09:15:02 +0000 2010
>Originator:     Volkmar Seifert
>Release:        NetBSD 5
>Organization:
>Environment:
NetBSD unknown.nifelheim.info 5.0_RC4 NetBSD 5.0_RC4 (GENERIC) #3: Wed Apr 22 11:23:42 CEST 2009  build@ymir:/usr/build/src/sys/arch/i386/compile/obj.i386/GENERIC i386

>Description:
After installing and configuring sysutils/cvsreport, I noticed that it did not work as it should. It stopped with the following error:

"is_alive has no implementation on this system"

Looking into the code I noticed that cvsreport had a "is_alive"-function, which tried to access /proc/1 as a check whether this approach of monitoring a process does work or not.

My system mounts /proc on start-up, but without content. /emul/linux/proc is mounted as well, since I have installed linux-emulation, and after changing the path to /emul/linux/proc, cvsreport finally worked.

This patching should probably be done during make install?
>How-To-Repeat:
Simply install sysutils/cvsreport, and run it from a CVSROOT/commitinfo upon commit of a file with --debug activated (There might be a simpler way, but this is how I discovered it), and then to a 

cat /tmp/cvsreport.log

The error will be in that log.
>Fix:
Patch the "is_alive"-function upon install from "/proc" the system's linux-emulation-proc-path (most likely "/emul/linux/proc" unless someone has set up something extra-ordinary)

>Audit-Trail:
From: Joerg Sonnenberger <joerg@britannica.bec.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: pkg/43224: sysutils/cvsreport: is_alive()-function needs to be
 patched to the correct /proc-path (linux-emulation)
Date: Thu, 29 Apr 2010 10:55:05 +0200

 On Thu, Apr 29, 2010 at 08:50:00AM +0000, vs@nifelheim.info wrote:
 > My system mounts /proc on start-up, but without content.
 > /emul/linux/proc is mounted as well, since I have installed
 > linux-emulation, and after changing the path to /emul/linux/proc,
 > cvsreport finally worked.

 The normal recommendation is to just mount /proc with -o linux.

 Joerg

From: "Volkmar Seifert" <vs@nifelheim.info>
To: gnats-bugs@NetBSD.org
Cc: pkg-manager@NetBSD.org, gnats-admin@NetBSD.org, pkgsrc-bugs@NetBSD.org,
        vs@nifelheim.info
Subject: Re: pkg/43224: sysutils/cvsreport: is_alive()-function needs to be 
 patched to the correct /proc-path (linux-emulation)
Date: Thu, 29 Apr 2010 11:14:22 +0200

 >  > My system mounts /proc on start-up, but without content.
 >  > /emul/linux/proc is mounted as well, since I have installed
 >  > linux-emulation, and after changing the path to /emul/linux/proc,
 >  > cvsreport finally worked.
 >
 >  The normal recommendation is to just mount /proc with -o linux.
 >

 The /proc settings are as set by the installation-defaults, as there was
 no need for a change, so far. I can change that, of course, but then it
 should be somehow mentioned in MESSAGES, shouldn't it?

 It's always a bad surprise to find out these things "the hard way".

 - Volkmar

 -- 
 http://blog.nifelheim.info/tech

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