I hope you're not hard-coding c:\cygwin!
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Ken Shaffer
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Hi all,
Let me thx all the CygWin team !
I tested your modifications, & now I can hook native Win32 systems calls
(like CreateFile you call indirectly by your libc fake methods) with the
Microsoft Detours Toolkit) by using LD_PRELOAD, also in forkee !
Your LD_PRELOAD simply replace the Microso
Original Message
>From: Brian Ford
>Sent: 11 August 2005 19:06
> Just to add a useless speculation that I don't currently have time to
> follow up on...
>
> I'd bet this is the mechanism used by SysInternals Process Explorer for
> the currently broken (on Cygwin) DLL list and thread list
On Thu, 11 Aug 2005, Christopher Faylor wrote:
> On Thu, Aug 11, 2005 at 02:58:58PM +0200, Louis Lecaroz wrote:
> >Having (if possible ;) ) a patch & a standard modification in cygwin to
> >allow this type of programming will be really great !
>
> Cygwin has its own (currently undocumented) hookin
So to be more clear on my previous post (sorry, english is not my
natural language :( ) :
-The LD_PRELOAD is not performed (It appears not to be performed...) in
the forkee, so the code is not loaded in it (I think)
-Yes, I would like the LD_PRELOAD to be loaded in the forkee, this will
allow al
Oups I missed something in my previous post...
I also tried processes started directly not by bash, like sh, & others,
& LD_PRELOAD allow to have my hooks working in cygwin processs ! that's
really great !
So, the only issue keeping on my solution, is LD_PRELOAD a I said in my
post above... Sor
I can't really tell from your description. It looks like the LD_PRELOAD
stuff won't be called in the forkee, but I don't know if that's what you're
seeing or not. It still works when a process is execed, so it seems
like it should be working most of the time. I've fixed this in CVS.
I'll gen
On Thu, Aug 11, 2005 at 06:01:08PM +0200, Louis Lecaroz wrote:
>I tried to LD_PRELOAD my Microsoft DLL Hook, & it appears to work,
>cygwin is loaded correctly, & code is not injected but loaded by cygwin. &
>Hooks appears working ! that's a great improvement on my issue. So it
>appears to be the
Hi Dave,
First I really understand your point of view of starting programs sent
by internet ! I am working like you to have a secure computer ;)
Next, ok, I said, I am writing a TRuss program but by using the
Microsoft Detours toolkit. You have some example shipped with the MS
Detours, doing
Original Message
>From: Louis Lecaroz
>Sent: 11 August 2005 16:13
> Dave,
> For your information, you don't need my code specificaly, as it is not
> directly link to "my" code but to the Microsoft Toolkit, but I think,
> when You were talking about my code, You mean Microsoft ?.
I'm not
Christopher,
That's a possible workaround.
I tried to LD_PRELOAD my Microsoft DLL Hook, & it appears to work,
cygwin is loaded correctly, & code is not injected but loaded by cygwin. &
Hooks appears working ! that's a great improvement on my issue. So it
appears to be the code injection from one
On Thu, Aug 11, 2005 at 02:58:58PM +0200, Louis Lecaroz wrote:
>Having (if possible ;) ) a patch & a standard modification in cygwin to
>allow this type of programming will be really great !
Cygwin has its own (currently undocumented) hooking mechanism. Setting
the LD_PRELOAD environment variable
Original Message
>From: Louis Lecaroz
>Sent: 11 August 2005 14:36
>>
> Yes, ok, but so, how to trace cygwin+native Win32 program together ?
Ok, so you wrote a truss tool, and it doesn't work with cygwin
executables, and you want to know what to do?
The answer is simple. You have
Thank's you Eric for your quick answer...
But I have many questions for you... :
Eric Blake wrote:
And what's wrong with cygwin's strace tool?
Does the strace tool working with standard Win32 tools. Because I need
a generic tool tracing file accesses on CygWin+Win32 native tools (not
only
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According to Louis Lecaroz on 8/11/2005 6:45 AM:
> Hi,
>
> I search (I think ;) ) in all forums, newsgroups, mailing list on
> internet about this topic but I did not found anything.
> I wrote an Advanced "truss like" tool to examine files opened by a
Just to prevent you, I have given more details
between the truss debugging log & the cygcheck.out
which are :
As you will see, internal Win32 system calls of CygWin have been
correctly hooked,
Bash appears to work correctly still it does not fork.
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