Date: Fri, 15 Feb 2008 21:04:26 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: freebsd-current@freebsd.org Cc: Kostik Belousov <kostikbel@gmail.com>, Dag-Erling =?utf-8?q?Sm=C3=B8rgrav?= <des@des.no>, current@freebsd.org Subject: Re: [src] cvs commit: src/include unistd.h src/lib/libc/sys readlink.2 src/sys/compat/freebsd32 syscalls.master src/sys/kern syscalls.master vfs_syscalls.c src/sys/sys syscallsubr.h Message-ID: <200802152104.34829.doconnor@gsoft.com.au> In-Reply-To: <86ve4qzhxe.fsf@ds4.des.no> References: <200802122009.m1CK94Y8026959@repoman.freebsd.org> <20080214173850.GB57756@deviant.kiev.zoral.com.ua> <86ve4qzhxe.fsf@ds4.des.no>
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On Fri, 15 Feb 2008, Dag-Erling Sm=C3=B8rgrav wrote:
> Kostik Belousov <kostikbel@gmail.com> writes:
> > The slightly contrived example below works on RELENG_7 amd64,
> > relevant output from the truss is
> > readlink("/usr/X11R6","l",1) =3D 1 (0x1)
> > on the CURRENT gives
> > readlink("/usr/X11R6","l",1) =3D -4294967295
> > (0xffffffff00000001) [also please note wrong output for the third
> > readlink arg; ktrace/kdump works ok].
>
> The only advantage truss has is the ability to decode structs
> (e.g. struct sockaddr in a connect() call). Apart from that, ktrace
> / kdump is superior in every respect.
That's a pretty big advantage :)
Also, ktrace can't write to a pipe which means you need to run/process=20
rather than 'stream'.
=2D-=20
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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