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References: <AANLkTi=tESNe+Uj574gAQpiGXCX0ptM3ANsBWUOu+z+J@mail.gmail.com> <20110331084729.GA29683@host1.jankratochvil.net>
From: Kevin Pouget <kevin.pouget@gmail.com>
Date: Thu, 31 Mar 2011 09:47:00 -0000
Message-ID: <AANLkTimPAd3v2x=G5PVkzB0Jk_V9i2Zw-=vGMJPLTxWT@mail.gmail.com>
Subject: Re: GDB and LD_PRELOAD library-call interception
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: gdb@sourceware.org
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oh yes, thanks, that's an interesting command !

I was wondering if there could be a way to hack this exec-wrapper to
launch for instance the executable in an xterm window?
personally, I don't like debugging GDB with GDB from a single
terminal, so I need to do a pid-attach; "set exec-wrapper xterm" would
be very conveniant for any console-based interactive program, I guess

but it it possible to follow easily (two) forks?
let me know if you think that the idea is interesting / feasible


Cordially,

Kevin

On Thu, Mar 31, 2011 at 4:47 AM, Jan Kratochvil
<jan.kratochvil@redhat.com> wrote:
> On Thu, 31 Mar 2011 10:25:17 +0200, Kevin Pouget wrote:
>> it looks like if the library is loaded twice, without any control on
>> the first load ('my_init' pending breakpoint is only resolved before
>> the second execution)
>
> See `set exec-wrapper', GDB runs a normal shell to process the startup, G=
DB
> traps its first exec() call. =A0Therefore LD_PRELOAD applies already on t=
he
> shell.
>
>
> Regards,
> Jan
>