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Where is "ioctl.c" in ubuntu?

Hi all

I'm using ubuntu 9.04;

I want to know where is the "ioctl" source code?
It's header file can be found in "/usr/include/sys/ioctl.h"

And is as below:

Code:

#ifndef        _SYS_IOCTL_H

#define        _SYS_IOCTL_H        1



#include <features.h>



__BEGIN_DECLS



/* Get the list of `ioctl' requests and related constants.  */

#include <bits/ioctls.h>



/* Define some types used by `ioctl' requests.  */

#include <bits/ioctl-types.h>



/* On a Unix system, the system <sys/ioctl.h> probably defines some of

  the symbols we define in <sys/ttydefaults.h> (usually with the same

  values).  The code to generate <bits/ioctls.h> has omitted these

  symbols to avoid the conflict, but a Unix program expects <sys/ioctl.h>

  to define them, so we must include <sys/ttydefaults.h> here.  */

#include <sys/ttydefaults.h>



/* Perform the I/O control operation specified by REQUEST on FD.

  One argument may follow; its presence and type depend on REQUEST.

  Return value depends on REQUEST.  Usually -1 indicates error.  */

extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;



__END_DECLS



#endif /* sys/ioctl.h */

I want to access the source code of it: "ioctl.c", specially the implementation of function:

Code:

extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;

Could you guide me where it is?

THX.

The file is found in the glibc-2.9 source code :
glibc-2.9/misc/ioctl.c
( find glibc-2.9/ -name ioctl.c )

http://archive.ubuntu.com/ubuntu/poo....9.orig.tar.gz

http://packages.ubuntu.com/source/jaunty/glibc
..

Hi;

I saw this source and found only this piece of code in it:

Code:

 #include <errno.h>

  #include <sys/ioctl.h>

 

  /* Perform the I/O control operation specified by REQUEST on FD.

    The actual type and use of ARG and the return value depend on  REQUEST.  */



  int

  __ioctl (fd, request)

      int fd;

      unsigned long int request;

  {

    __set_errno (ENOSYS);

    return -1;

  }

  stub_warning (ioctl)

 

  weak_alias (__ioctl, ioctl)

  #include <stub-tag.h>

I want its actual implementation that may consist of a big switch statement that selects the correct behavior according to the "request" argument, either in kernel side or user side!

Could you hep me again?!

TIA.

Actually not a suject, I am familar with.

Google .. ioctl in linux kernel ..
http://www.google.com/search?hl=en&s...=&oq=&gs_rfai=
> 562,000 hits, this one is the first
http://tldp.org/LDP/lkmpg/2.6/html/x892.html

Please see § Example 7-3. ioctl.c : A "100 line file",
but then again, the site is dated 2007.
..