geom_ccd.c (a6b1634eb2fe66b140e841df681393291bcae452) geom_ccd.c (db901281608f0c69c05dd9ab366155d3225f0fd2)
1/* $FreeBSD$ */
2
3/* $NetBSD: ccd.c,v 1.22 1995/12/08 19:13:26 thorpej Exp $ */
4
5/*
6 * Copyright (c) 1995 Jason R. Thorpe.
7 * All rights reserved.
8 *

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82 * Dynamic configuration and disklabel support by:
83 * Jason R. Thorpe <thorpej@nas.nasa.gov>
84 * Numerical Aerodynamic Simulation Facility
85 * Mail Stop 258-6
86 * NASA Ames Research Center
87 * Moffett Field, CA 94035
88 */
89
1/* $FreeBSD$ */
2
3/* $NetBSD: ccd.c,v 1.22 1995/12/08 19:13:26 thorpej Exp $ */
4
5/*
6 * Copyright (c) 1995 Jason R. Thorpe.
7 * All rights reserved.
8 *

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82 * Dynamic configuration and disklabel support by:
83 * Jason R. Thorpe <thorpej@nas.nasa.gov>
84 * Numerical Aerodynamic Simulation Facility
85 * Mail Stop 258-6
86 * NASA Ames Research Center
87 * Moffett Field, CA 94035
88 */
89
90#include "opt_devfs.h"
91#include "ccd.h"
92
93#include <sys/param.h>
94#include <sys/systm.h>
95#include <sys/kernel.h>
96#include <sys/module.h>
97#include <sys/proc.h>
98#include <sys/bio.h>

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104#include <sys/disklabel.h>
105#include <ufs/ffs/fs.h>
106#include <sys/devicestat.h>
107#include <sys/fcntl.h>
108#include <sys/vnode.h>
109
110#include <sys/ccdvar.h>
111
90#include "ccd.h"
91
92#include <sys/param.h>
93#include <sys/systm.h>
94#include <sys/kernel.h>
95#include <sys/module.h>
96#include <sys/proc.h>
97#include <sys/bio.h>

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103#include <sys/disklabel.h>
104#include <ufs/ffs/fs.h>
105#include <sys/devicestat.h>
106#include <sys/fcntl.h>
107#include <sys/vnode.h>
108
109#include <sys/ccdvar.h>
110
112#ifdef DEVFS
113#include <sys/eventhandler.h>
114#include <fs/devfs/devfs.h>
115#endif
116
117#if defined(CCDDEBUG) && !defined(DEBUG)
118#define DEBUG
119#endif
120
121#ifdef DEBUG
122#define CCDB_FOLLOW 0x01
123#define CCDB_INIT 0x02
124#define CCDB_IO 0x04

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284 * Number of blocks to untouched in front of a component partition.
285 * This is to avoid violating its disklabel area when it starts at the
286 * beginning of the slice.
287 */
288#if !defined(CCD_OFFSET)
289#define CCD_OFFSET 16
290#endif
291
111#if defined(CCDDEBUG) && !defined(DEBUG)
112#define DEBUG
113#endif
114
115#ifdef DEBUG
116#define CCDB_FOLLOW 0x01
117#define CCDB_INIT 0x02
118#define CCDB_IO 0x04

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278 * Number of blocks to untouched in front of a component partition.
279 * This is to avoid violating its disklabel area when it starts at the
280 * beginning of the slice.
281 */
282#if !defined(CCD_OFFSET)
283#define CCD_OFFSET 16
284#endif
285
292#ifdef DEVFS
293static void
294ccd_clone(void *arg, char *name, int namelen, dev_t *dev)
295{
296 int i, u;
297 char *s;
298
299 if (*dev != NODEV)
300 return;
286static void
287ccd_clone(void *arg, char *name, int namelen, dev_t *dev)
288{
289 int i, u;
290 char *s;
291
292 if (*dev != NODEV)
293 return;
301 i = devfs_stdclone(name, &s, "ccd", &u);
294 i = dev_stdclone(name, &s, "ccd", &u);
302 if (i != 2)
303 return;
304 if (u >= numccd)
305 return;
306 if (*s <= 'a' || *s >= 'h')
307 return;
308 if (s[1] != '\0')
309 return;
310 *dev = make_dev(&ccd_cdevsw, u * 8 + *s - 'a',
311 UID_ROOT, GID_OPERATOR, 0640, name);
312}
295 if (i != 2)
296 return;
297 if (u >= numccd)
298 return;
299 if (*s <= 'a' || *s >= 'h')
300 return;
301 if (s[1] != '\0')
302 return;
303 *dev = make_dev(&ccd_cdevsw, u * 8 + *s - 'a',
304 UID_ROOT, GID_OPERATOR, 0640, name);
305}
313#endif DEVFS
314
315/*
316 * Called by main() during pseudo-device attachment. All we need
317 * to do is allocate enough space for devices to be configured later, and
318 * add devsw entries.
319 */
320static void
321ccdattach()

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343 numccd = num;
344 bzero(ccd_softc, num * sizeof(struct ccd_softc));
345 bzero(ccddevs, num * sizeof(struct ccddevice));
346
347 cdevsw_add(&ccd_cdevsw);
348 /* XXX: is this necessary? */
349 for (i = 0; i < numccd; ++i)
350 ccddevs[i].ccd_dk = -1;
306
307/*
308 * Called by main() during pseudo-device attachment. All we need
309 * to do is allocate enough space for devices to be configured later, and
310 * add devsw entries.
311 */
312static void
313ccdattach()

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335 numccd = num;
336 bzero(ccd_softc, num * sizeof(struct ccd_softc));
337 bzero(ccddevs, num * sizeof(struct ccddevice));
338
339 cdevsw_add(&ccd_cdevsw);
340 /* XXX: is this necessary? */
341 for (i = 0; i < numccd; ++i)
342 ccddevs[i].ccd_dk = -1;
351#ifdef DEVFS
352 EVENTHANDLER_REGISTER(devfs_clone, ccd_clone, 0, 1000);
353#endif
343 EVENTHANDLER_REGISTER(dev_clone, ccd_clone, 0, 1000);
354}
355
356static int
357ccd_modevent(mod, type, data)
358 module_t mod;
359 int type;
360 void *data;
361{

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345
346static int
347ccd_modevent(mod, type, data)
348 module_t mod;
349 int type;
350 void *data;
351{

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