Date: Wed, 23 May 2001 06:30:03 -0700 (PDT) From: David Malone <dwmalone@maths.tcd.ie> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/24315: getcwd under Linux emulation fails after a rmdir Message-ID: <200105231330.f4NDU3W94334@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/24315; it has been noted by GNATS.
From: David Malone <dwmalone@maths.tcd.ie>
To: freebsd-gnats-submit@FreeBSD.org
Cc:
Subject: Re: kern/24315: getcwd under Linux emulation fails after a rmdir
Date: Wed, 23 May 2001 14:24:28 +0100
I'm just bouncing this message into the audit trail for the PR.
David.
----- Forwarded message from David Malone <dwmalone@maths.tcd.ie> -----
Delivered-To: freebsd-hackers@freebsd.org
Date: Wed, 23 May 2001 12:38:21 +0100
From: David Malone <dwmalone@maths.tcd.ie>
To: "Koster, K.J." <K.J.Koster@kpn.com>
Cc: 'Alfred Perlstein' <bright@rush.net>,
'FreeBSD Hackers mailing list' <freebsd-hackers@freebsd.org>
Subject: Re: Linux getcwd problems
In-Reply-To: <59063B5B4D98D311BC0D0001FA7E452205FD9C04@l04.research.kpn.com>; from K.J.Koster@kpn.com on Wed, May 23, 2001 at 01:02:01PM +0100
List-Archive: <http://docs.freebsd.org/mail/>; (Web Archive)
X-Loop: FreeBSD.ORG
On Wed, May 23, 2001 at 01:02:01PM +0100, Koster, K.J. wrote:
The problem seems to be that FreeBSD's getcwd library call will
impliment the getcwd userland if the syscall fails or is unimplimented.
There are times when the syscall fails in normal operation and you
don't see this with the BSD stuff 'cos it is covered up by the
userland implimentation. You can check this by kdumping a FreeBSD
version of your cwd program and searching for the return value of
the __getcwd syscall.
The Linux emulation stuff just calls the FreeBSD syscall, but I
guess the Linux libraries don't expect getcwd to fail, so they
can't do the userland magic.
I haven't had a chance to look at how hard it would be to fix the
FreeBSD getcwd call to always work, or to fake the Linux stuff so
that it somehow did the equivelent of the userland thing.
David.
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
----- End forwarded message -----
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200105231330.f4NDU3W94334>