From owner-freebsd-questions@FreeBSD.ORG  Tue Oct 11 15:19:12 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E892B16A44A
	for <freebsd-questions@freebsd.org>;
	Tue, 11 Oct 2005 15:19:12 +0000 (GMT)
	(envelope-from freebsd-questions-local@be-well.ilk.org)
Received: from mail26.sea5.speakeasy.net (mail26.sea5.speakeasy.net
	[69.17.117.28]) by mx1.FreeBSD.org (Postfix) with ESMTP id 989EC43D45
	for <freebsd-questions@freebsd.org>;
	Tue, 11 Oct 2005 15:19:12 +0000 (GMT)
	(envelope-from freebsd-questions-local@be-well.ilk.org)
Received: (qmail 24027 invoked from network); 11 Oct 2005 15:19:12 -0000
Received: from dsl092-078-145.bos1.dsl.speakeasy.net (HELO be-well.ilk.org)
	([66.92.78.145])
	(envelope-sender <freebsd-questions-local@be-well.ilk.org>)
	by mail26.sea5.speakeasy.net (qmail-ldap-1.03) with SMTP
	for <freebsd-questions@freebsd.org>; 11 Oct 2005 15:19:11 -0000
Received: by be-well.ilk.org (Postfix, from userid 1147)
	id D835B41; Tue, 11 Oct 2005 11:19:10 -0400 (EDT)
Sender: lowell@be-well.ilk.org
To: David Marshall <dmarshall@gmail.com>
References: <53f158630510101240n50677077l5f0cb9abd66002a1@mail.gmail.com>
From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
Date: 11 Oct 2005 11:19:10 -0400
In-Reply-To: <53f158630510101240n50677077l5f0cb9abd66002a1@mail.gmail.com>
Message-ID: <44br1wxes1.fsf@be-well.ilk.org>
Lines: 43
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: freebsd-questions@freebsd.org
Subject: Re: mkstemp on NFS Mount?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: freebsd-questions@freebsd.org
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 11 Oct 2005 15:19:13 -0000

David Marshall <dmarshall@gmail.com> writes:

> I've read mixed opinions on whether it's feasible to be doing msktemp
> on an NFS-mounted filesystem.  Is it possible to do this?
> 
> I use File::Temp to use mkstemp, but it's all the same, I get error
> messages such as:
> 
> Error in tempfile() using /mnt/.XXXXX: Could not create temp file
> /mnt/.hkATa: Operation not supported at (eval
> 14)[/usr/local/lib/perl5/5.8.7/perl5db.pl:628] line 2
> 
> Is this a matter of not having certain permissions set properly?

Probably not; no way to say without seeing your code.

In C, I get no errors at all on a quick test program (at bottom of
message).  I tried it on both NFS and non-NFS filesystems.  I don't
know what problems you were referring to.

================================================================

#include <stdio.h>
#include <unistd.h>
#include <errno.h>

int main(void)
{
    char pattern[100] = "foo.bar.XXXX";
    char text[] = "hello world\n";
    int i,j;

    i = mkstemp(pattern);
    printf("pattern now %s\n",pattern);

    j = write(i,text,sizeof(text));
    if (sizeof(text) != j)
      printf("write() wrote wrong length %d\n");

    j = close(i);
    if (j != 0)
      printf("close() returned error; errno is %d\n",errno);
}