Date: Thu, 30 Sep 2004 10:32:36 +0200
From: Lennert Buytenhek <buytenh@wantstofly.org>
To: Tonnerre <tonnerre@thundrix.ch>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>, dsaxena@plexity.net,
       linux-kernel@vger.kernel.org, herbertb@cs.vu.nl
Subject: Re: strange NFS problems (ARM client, x86 server)
Message-ID: <20040930083236.GA32262@xi.wantstofly.org>
References: <20040929082307.GA19666@xi.wantstofly.org> <20040929203347.GD21770@thundrix.ch>
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On Wed, Sep 29, 2004 at 10:33:47PM +0200, Tonnerre wrote:

> Salut,

Hi,


> > chdir("")                               = -1 ENOENT (No such file or directory)
> 
> Interestingly,  rpm requested an  empty chdir.  This narrows  down the
> problem.

I don't think it does, as the second invocation of RPM (after cd 'pwd')
also does this, but works fine.


> The following miniapp should be able to reproduce the problem:
> 
> cat << EOT > blah.c
> #include <stdio.h>
> #include <stdlib.h>
> #include <unistd.h>
> 
> int main(void) {
> 	if (chdir("")) {
> 		perror("chdir");
> 		exit(1);
> 	}
> 	exit(0);
> }
> EOT

'current directory' is per-process state.  You'll end up changing the
current directory in the child process, but not the parent.


--L
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