Date: Sun, 19 Oct 2008 13:53:45 GMT From: Mateusz Guzik <mjguzik@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: docs/128222: [patch] man page truss(1) claims that init(8) can be traced Message-ID: <200810191353.m9JDrj00055431@www.freebsd.org> Resent-Message-ID: <200810191400.m9JE09vJ034026@freefall.freebsd.org>
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>Number: 128222
>Category: docs
>Synopsis: [patch] man page truss(1) claims that init(8) can be traced
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-doc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: doc-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Oct 19 14:00:09 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator: Mateusz Guzik
>Release: 8.0-CURRENT
>Organization:
>Environment:
FreeBSD eternal 8.0-CURRENT FreeBSD 8.0-CURRENT #14: Mon Sep 15 17:38:51 CEST 2008 f@eternal:/usr/obj/usr/src/sys/ETERNAL i386
>Description:
In truss(1) one can find the following:
# Follow an already-running process
$ truss -p 1
but:
# truss -p 1
truss: can not attach to target process: Invalid argument
(It fails because init(8) is marked as a system process and ptrace doesn't allow to trace these.)
>How-To-Repeat:
Run `trace -p 1`
>Fix:
Change pid 1 to for example 34, as in the man page for ktrace(1).
Patch attached with submission follows:
--- usr.bin/truss/truss.1.orig 2008-10-19 14:47:33.000000000 +0200
+++ usr.bin/truss/truss.1 2008-10-19 15:41:01.000000000 +0200
@@ -85,7 +85,7 @@
# Do the same, but put the output into a file
.Dl $ truss -o /tmp/truss.out /bin/echo hello
# Follow an already-running process
-.Dl $ truss -p 1
+.Dl $ truss -p 34
.Sh SEE ALSO
.Xr kdump 1 ,
.Xr ktrace 1 ,
>Release-Note:
>Audit-Trail:
>Unformatted:
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