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Date: Fri, 26 Feb 2010 15:00:37 +0100
Message-ID: <1bd550a01002260600x4d83d610k3149374143ade77c@mail.gmail.com>
From: =?ISO-8859-1?Q?Fernando_Apestegu=EDa?= <fernando.apesteguia@gmail.com>
To: Kostik Belousov <kostikbel@gmail.com>
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Cc: freebsd-emulation@freebsd.org
Subject: Re: linprocfs proc/pid/mem Bad address
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On Fri, Feb 26, 2010 at 12:12 PM, Kostik Belousov <kostikbel@gmail.com> wrote:
> On Fri, Feb 26, 2010 at 12:06:07PM +0100, Fernando Apestegu?a wrote:
>> On Fri, Feb 26, 2010 at 11:41 AM, Kostik Belousov <kostikbel@gmail.com> wrote:
>> > On Thu, Feb 25, 2010 at 10:54:02PM +0100, Fernando Apestegu?a wrote:
>> >> Why /compat/linux/proc/<pid>/mem always reports "Bad address" ?
>> >>
>> >> I'm using 8.0-RELEASE-p2
>> >>
>> >> Thanks in advance.
>> >
>> > Reports when ? What is the operation you doing that causes this ?
>>
>> Oops, sorry. When trying to cat the file for example. In Linux the
>> error reported is something like
>> "No such process"
>>
>> >
>
> mem provides access to the target process virtual address space as file.
> Reading from the file at some offset returns corresponding sequence of
> bytes present in the process virtual address space starting at the offset.
> Since cat starts read at the file offset 0, and (almost) no processes
> map the page at the address 0, you get this error.

Thanks for the clarification.

>