From: Nguyen Thai Ngoc Duy <pclouds@gmail.com>
Date: Fri, 18 Mar 2011 11:54:00 GMT
Subject: Re: PATH_MAX (Re: [PATCH] system_path: use a static buffer)
Message-ID: <AANLkTimW9TofyEqZUQwkAkVqA_Sr5kgV_rm6dJ6LTVbb@mail.gmail.com>
In-Reply-To: <20110318113818.GA6049@elie>

On Fri, Mar 18, 2011 at 6:38 PM, Jonathan Nieder <jrnieder@gmail.com> wrote:
> Hi,
>
> Nguyen Thai Ngoc Duy wrote:
>
>> It was pointed out elsewhere [1] that PATH_MAX only specifies max
>> length of a path element, not full path. I think we'd need to stay
>> away from preallocated PATH_MAX-sized arrays.
>
> No, PATH_MAX is actually the maximum length of a path, and when you
> use, say, open(2), it will fail if your path is longer than that.  The
> maximum length of a path component on most filesytems is 255 or 256;
> PATH_MAX on Linux is 4096.

Hmm.. too late I sent two patches before reading this :) Cloning
linux-2.6.git for verifying. But getcwd() can return a path longer
than PATH_MAX, right?
-- 
Duy