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

From: John Baldwin <jhb_at_freebsd.org>
Date: Fri, 15 Feb 2008 08:58:01 -0500
On Friday 15 February 2008 05:34:26 am Daniel O'Connor wrote:
> On Fri, 15 Feb 2008, Dag-Erling Smørgrav wrote:
> > Kostik Belousov <kostikbel_at_gmail.com> writes:
> > > The slightly contrived example below works on RELENG_7 amd64,
> > > relevant output from the truss is
> > > 	readlink("/usr/X11R6","l",1)                     = 1 (0x1)
> > > on the CURRENT gives
> > > 	readlink("/usr/X11R6","l",1)                     = -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 
> rather than 'stream'.

kdump -l.

-- 
John Baldwin
Received on Fri Feb 15 2008 - 13:57:39 UTC

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