vfs_mount.c (a481b90b82ae6f3284afdc9d9e0d218a91686f14) vfs_mount.c (db901281608f0c69c05dd9ab366155d3225f0fd2)
1/*-
2 * Copyright (c) 1999 Michael Smith
3 * All rights reserved.
4 * Copyright (c) 1999 Poul-Henning Kamp
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions

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38 * vfsname := the name of a VFS known to the kernel and capable
39 * of being mounted as root
40 * path := disk device name or other data used by the filesystem
41 * to locate its physical store
42 *
43 */
44
45#include "opt_rootdevname.h"
1/*-
2 * Copyright (c) 1999 Michael Smith
3 * All rights reserved.
4 * Copyright (c) 1999 Poul-Henning Kamp
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions

--- 29 unchanged lines hidden (view full) ---

38 * vfsname := the name of a VFS known to the kernel and capable
39 * of being mounted as root
40 * path := disk device name or other data used by the filesystem
41 * to locate its physical store
42 *
43 */
44
45#include "opt_rootdevname.h"
46#include "opt_devfs.h"
47
48#include <sys/param.h>
49#include <sys/kernel.h>
50#include <sys/systm.h>
51#include <sys/proc.h>
52#include <sys/vnode.h>
53#include <sys/mount.h>
54#include <sys/malloc.h>
55#include <sys/reboot.h>
56#include <sys/diskslice.h>
57#include <sys/disklabel.h>
58#include <sys/conf.h>
59#include <sys/cons.h>
60
61#include "opt_ddb.h"
62#ifdef DDB
63#include <ddb/ddb.h>
64#endif
65
46
47#include <sys/param.h>
48#include <sys/kernel.h>
49#include <sys/systm.h>
50#include <sys/proc.h>
51#include <sys/vnode.h>
52#include <sys/mount.h>
53#include <sys/malloc.h>
54#include <sys/reboot.h>
55#include <sys/diskslice.h>
56#include <sys/disklabel.h>
57#include <sys/conf.h>
58#include <sys/cons.h>
59
60#include "opt_ddb.h"
61#ifdef DDB
62#include <ddb/ddb.h>
63#endif
64
66#ifdef DEVFS
67#include <sys/eventhandler.h>
68#include <fs/devfs/devfs.h>
69#endif
70
71MALLOC_DEFINE(M_MOUNT, "mount", "vfs mount structure");
72
73#define ROOTNAME "root_device"
74
75struct vnode *rootvnode;
76
77/*
78 * The root specifiers we will try if RB_CDROM is specified.

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321}
322
323/*
324 * Convert a given name to the dev_t of the disk-like device
325 * it refers to.
326 */
327dev_t
328getdiskbyname(char *name) {
65MALLOC_DEFINE(M_MOUNT, "mount", "vfs mount structure");
66
67#define ROOTNAME "root_device"
68
69struct vnode *rootvnode;
70
71/*
72 * The root specifiers we will try if RB_CDROM is specified.

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315}
316
317/*
318 * Convert a given name to the dev_t of the disk-like device
319 * it refers to.
320 */
321dev_t
322getdiskbyname(char *name) {
329#ifdef DEVFS
330 char *cp;
331 dev_t dev;
332
333 cp = name;
334 if (!bcmp(cp, "/dev/", 5))
335 cp += 5;
336
337 dev = NODEV;
323 char *cp;
324 dev_t dev;
325
326 cp = name;
327 if (!bcmp(cp, "/dev/", 5))
328 cp += 5;
329
330 dev = NODEV;
338 EVENTHANDLER_INVOKE(devfs_clone, cp, strlen(cp), &dev);
331 EVENTHANDLER_INVOKE(dev_clone, cp, strlen(cp), &dev);
339 return (dev);
332 return (dev);
340
341#else
342 char *cp;
343 int cd, unit, slice, part;
344 dev_t dev;
345
346 slice = 0;
347 part = 0;
348 cp = rindex(name, '/');
349 if (cp != NULL) {
350 name = cp + 1;
351 }
352 cp = name;
353 while (cp != '\0' && (*cp < '0' || *cp > '9'))
354 cp++;
355 if (cp == name) {
356 printf("missing device name\n");
357 return (NODEV);
358 }
359 if (*cp == '\0') {
360 printf("missing unit number\n");
361 return (NODEV);
362 }
363 unit = *cp - '0';
364 *cp++ = '\0';
365 for (cd = 0; cd < NUMCDEVSW; cd++) {
366 dev = makedev(cd, 0);
367 if (devsw(dev) != NULL &&
368 strcmp(devsw(dev)->d_name, name) == 0)
369 goto gotit;
370 }
371 printf("no such device '%s'\n", name);
372 return (NODEV);
373gotit:
374 while (*cp >= '0' && *cp <= '9')
375 unit += 10 * unit + *cp++ - '0';
376 if (*cp == 's' && cp[1] >= '0' && cp[1] <= '9') {
377 slice = cp[1] - '0' + 1;
378 cp += 2;
379 }
380 if (*cp >= 'a' && *cp <= 'h') {
381 part = *cp - 'a';
382 cp++;
383 }
384 if (*cp != '\0') {
385 printf("junk after name\n");
386 return (NODEV);
387 }
388 return (makedev(cd, dkmakeminor(unit, slice, part)));
389#endif
390}
391
392/*
393 * Set rootdev to match (name), given that we expect it to
394 * refer to a disk-like device.
395 */
396static int
397setrootbyname(char *name)

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334
335/*
336 * Set rootdev to match (name), given that we expect it to
337 * refer to a disk-like device.
338 */
339static int
340setrootbyname(char *name)

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