where did ioperm & iopl functions go ?

[Ahmed El-Mahmoudy <goofy at goofy dot dhis dot org>]

as-salam alikom,

    I read in a IO port mini-programming HOWTO (written by Riku
Saikkonen <Riku.Saikkonen@hut.fi>) that the hearder file 'unistd.h'
contains a declaration of two functions ioperm & iopl which gives one
the access to IO ports, well, I'm recently installed gcc 2.95.1 (along
with the libraries  & header files that came with it), and I found that
the ioperm & iopl are not in the unistd.h header file nor in the
"asm/io.h" I figured that those fns may have moved there... but it was
of no use, here's the example code that was in the IO port pragramming
mini-HOWTO that I tried to test but I failed due to the non-presence of
those ioperm & iopl functions:



     /*
      * example.c: very simple example of port I/O
      *
      * This code does nothing useful, just a port write, a pause,
      * and a port read. Compile with `gcc -O2 -o example example.c',
      * and run as root with `./example'.
      */

     #include <stdio.h>
     #include <unistd.h>
     #include <asm/io.h>

     #define BASEPORT 0x378 /* lp1 */

     int main()
     {
       /* Get access to the ports */
       if (ioperm(BASEPORT, 3, 1)) {perror("ioperm"); exit(1);}

       /* Set the data signals (D0-7) of the port to all low (0) */
       outb(0, BASEPORT);

       /* Sleep for a while (100 ms) */
       usleep(100000);

       /* Read from the status port (BASE+1) and display the result */
       printf("status: %d\n", inb(BASEPORT + 1));

       /* We don't need the ports anymore */
       if (ioperm(BASEPORT, 3, 0)) {perror("ioperm"); exit(1);}

       exit(0);
     }

     /* end of example.c */


Thanks in advance...

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| Ahmed El-Mahmoudy                                   |
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