linux-kernel - Re: execve() returns ENOENT when ld-linux.so isn't found

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Message-ID: <b2cc26e41003251229w5d266c18gd17fdcf404136bd7@mail.gmail.com>
Date:	Thu, 25 Mar 2010 20:29:14 +0100
From:	Olaf van der Spek <olafvdspek@...il.com>
To:	drepper@...il.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: execve() returns ENOENT when ld-linux.so isn't found

On Wed, Mar 24, 2010 at 11:45 PM,  <drepper@...il.com> wrote:
> On Wed, Mar 24, 2010 at 15:37, Olaf van der Spek <olafvdspek@...il.com>
> wrote:
>>
>> Why not?
>> It's an improvement IMO, although it could be better.
>
> It's blatantly wrong.  There is no dynamic linker.  ENOEXEC means the file
> exists but is not of the right format.

That sounds closer to the actual error than ENOENT.

ENOENT: The file filename or a script or ELF interpreter does not
exist, or a shared library needed for file or interpreter cannot be
found.
ENOEXEC: An executable is not in a recognized format, is for the wrong
architecture, or has some other format error that means it cannot be
executed.

ENOENT shouldn't be overloaded like this, as it's common meaning is:
file not found. So it shouldn't be returned if the argument to execve
is actually found.

Olaf
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