kern_conf.c (3f54a085a603b050163611ce23972ee8de7636f1) kern_conf.c (db901281608f0c69c05dd9ab366155d3225f0fd2)
1/*-
2 * Parts Copyright (c) 1995 Terrence R. Lambert
3 * Copyright (c) 1995 Julian R. Elischer
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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37#include <sys/kernel.h>
38#include <sys/sysctl.h>
39#include <sys/systm.h>
40#include <sys/module.h>
41#include <sys/malloc.h>
42#include <sys/conf.h>
43#include <sys/vnode.h>
44#include <sys/queue.h>
1/*-
2 * Parts Copyright (c) 1995 Terrence R. Lambert
3 * Copyright (c) 1995 Julian R. Elischer
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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37#include <sys/kernel.h>
38#include <sys/sysctl.h>
39#include <sys/systm.h>
40#include <sys/module.h>
41#include <sys/malloc.h>
42#include <sys/conf.h>
43#include <sys/vnode.h>
44#include <sys/queue.h>
45#include <sys/ctype.h>
45#include <machine/stdarg.h>
46
47#define cdevsw_ALLOCSTART (NUMCDEVSW/2)
48
49struct cdevsw *cdevsw[NUMCDEVSW];
50
51static int bmaj2cmaj[NUMCDEVSW];
52

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64
65static struct specinfo devt_stash[DEVT_STASH];
66
67static LIST_HEAD(, specinfo) dev_hash[DEVT_HASH];
68
69static LIST_HEAD(, specinfo) dev_free;
70
71devfs_create_t *devfs_create_hook;
46#include <machine/stdarg.h>
47
48#define cdevsw_ALLOCSTART (NUMCDEVSW/2)
49
50struct cdevsw *cdevsw[NUMCDEVSW];
51
52static int bmaj2cmaj[NUMCDEVSW];
53

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65
66static struct specinfo devt_stash[DEVT_STASH];
67
68static LIST_HEAD(, specinfo) dev_hash[DEVT_HASH];
69
70static LIST_HEAD(, specinfo) dev_free;
71
72devfs_create_t *devfs_create_hook;
72devfs_remove_t *devfs_remove_hook;
73devfs_destroy_t *devfs_destroy_hook;
74int devfs_present;
73
74static int free_devt;
75SYSCTL_INT(_debug, OID_AUTO, free_devt, CTLFLAG_RW, &free_devt, 0, "");
76
77struct cdevsw *
78devsw(dev_t dev)
79{
80 if (dev->si_devsw)

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347 if (devfs_create_hook)
348 devfs_create_hook(dev);
349 return (dev);
350}
351
352void
353destroy_dev(dev_t dev)
354{
75
76static int free_devt;
77SYSCTL_INT(_debug, OID_AUTO, free_devt, CTLFLAG_RW, &free_devt, 0, "");
78
79struct cdevsw *
80devsw(dev_t dev)
81{
82 if (dev->si_devsw)

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349 if (devfs_create_hook)
350 devfs_create_hook(dev);
351 return (dev);
352}
353
354void
355destroy_dev(dev_t dev)
356{
355 if (devfs_remove_hook)
356 devfs_remove_hook(dev);
357 if (devfs_destroy_hook)
358 devfs_destroy_hook(dev);
357 dev->si_drv1 = 0;
358 dev->si_drv2 = 0;
359 dev->si_devsw = 0;
360 freedev(dev);
361}
362
363const char *
364devtoname(dev_t dev)

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376 mynor = minor(dev);
377 if (mynor < 0 || mynor > 255)
378 sprintf(p, "%#x", (u_int)mynor);
379 else
380 sprintf(p, "%d", mynor);
381 }
382 return (dev->si_name);
383}
359 dev->si_drv1 = 0;
360 dev->si_drv2 = 0;
361 dev->si_devsw = 0;
362 freedev(dev);
363}
364
365const char *
366devtoname(dev_t dev)

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378 mynor = minor(dev);
379 if (mynor < 0 || mynor > 255)
380 sprintf(p, "%#x", (u_int)mynor);
381 else
382 sprintf(p, "%d", mynor);
383 }
384 return (dev->si_name);
385}
386
387int
388dev_stdclone(char *name, char **namep, char *stem, int *unit)
389{
390 int u, i;
391
392 if (bcmp(stem, name, strlen(stem)) != 0)
393 return (0);
394 i = strlen(stem);
395 if (!isdigit(name[i]))
396 return (0);
397 u = 0;
398 while (isdigit(name[i])) {
399 u *= 10;
400 u += name[i++] - '0';
401 }
402 *unit = u;
403 if (namep)
404 *namep = &name[i];
405 if (name[i])
406 return (2);
407 return (1);
408}