Messages in this thread |  | | Date | Tue, 7 Nov 2000 12:53:16 +0200 (EET) | From | Catalin BOIE <> | Subject | Re: Kernel hook for open |
| |
On Mon, 6 Nov 2000, Erik Mouw wrote:
> On Mon, Nov 06, 2000 at 10:11:11AM -0500, Michael Vines wrote: > > On Mon, 6 Nov 2000, Erik Mouw wrote: > > > Use LD_PRELOAD instead. > > > > You could also write a simple kernel module that replaces the open system > > call. See the Linux Kernel Module Programming Guide for details. > > http://www.linuxdoc.org/guides.html > > > > specifically http://www.linuxdoc.org/LDP/lkmpg/node20.html > > Why difficult when it can be done easy? To test the Y2K readiness of > some programs (yeah, Y2K, remember?), I wrote a small library that > overloaded the time() and gettimeofday() syscalls in about 100 lines of > code. No kernel modules needed, no root privileges needed, just set the > environment variable LD_PRELOAD and off you go.
I did this but it doesn't catch the getpwent (that use open)! On strace it apears but my function is not called (I think it's called the one from the library).
> > > Erik > > -- > J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department > of Electrical Engineering, Faculty of Information Technology and Systems, > Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands > Phone: +31-15-2783635 Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl > WWW: http://www-ict.its.tudelft.nl/~erik/ >
--- Catalin(ux) BOIE catab@deuroconsult.ro A new Linux distribution: http://l13plus.deuroconsult.ro http://www2.deuroconsult.ro/~catab
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |