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< * $Id: kern_conf.c,v 1.35 1999/05/09 08:18:12 phk Exp $
---
> * $Id: kern_conf.c,v 1.36 1999/05/09 13:00:46 phk Exp $
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< int i ;
---
> int i;
> static int setup;
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> if (!setup) {
> for (i = 0; i < NUMCDEV; i++)
> if (!bmaj2cmaj[i])
> bmaj2cmaj[i] = 254;
> setup++;
> }
>
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>
> /*
> * dev_t and u_dev_t primitives
> */
>
> #define DEVT_FASCIST 1
>
> int
> major(dev_t x)
> {
> #ifdef DEVT_FASCIST
> return(253 - ((x >> 8) & 0xff));
> #else
> return((x >> 8) & 0xff);
> #endif
> }
>
> int
> minor(dev_t x)
> {
> return(x & 0xffff00ff);
> }
>
> dev_t
> makedev(int x, int y)
> {
> #ifdef DEVT_FASCIST
> return (((253 - x) << 8) | y);
> #else
> return ((x << 8) | y);
> #endif
> }
>
> udev_t
> dev2udev(dev_t x)
> {
> return umakedev(major(x), minor(x));
> }
>
> dev_t
> udev2dev(udev_t x, int b)
> {
> return makedev(umajor(x), uminor(x));
> }
>
> int
> uminor(udev_t dev)
> {
> return(dev & 0xffff00ff);
> }
>
> int
> umajor(udev_t dev)
> {
> return((dev & 0xff00) >> 8);
> }
>
> udev_t
> umakedev(int x, int y)
> {
> return ((x << 8) | y);
> }
>