1 | /* $NetBSD: disk.h,v 1.67 2016/04/27 02:19:12 christos Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1996, 1997, 2004 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, |
9 | * NASA Ames Research Center. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions and the following disclaimer. |
16 | * 2. Redistributions in binary form must reproduce the above copyright |
17 | * notice, this list of conditions and the following disclaimer in the |
18 | * documentation and/or other materials provided with the distribution. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
30 | * POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
32 | |
33 | /* |
34 | * Copyright (c) 1992, 1993 |
35 | * The Regents of the University of California. All rights reserved. |
36 | * |
37 | * This software was developed by the Computer Systems Engineering group |
38 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
39 | * contributed to Berkeley. |
40 | * |
41 | * All advertising materials mentioning features or use of this software |
42 | * must display the following acknowledgement: |
43 | * This product includes software developed by the University of |
44 | * California, Lawrence Berkeley Laboratories. |
45 | * |
46 | * Redistribution and use in source and binary forms, with or without |
47 | * modification, are permitted provided that the following conditions |
48 | * are met: |
49 | * 1. Redistributions of source code must retain the above copyright |
50 | * notice, this list of conditions and the following disclaimer. |
51 | * 2. Redistributions in binary form must reproduce the above copyright |
52 | * notice, this list of conditions and the following disclaimer in the |
53 | * documentation and/or other materials provided with the distribution. |
54 | * 3. Neither the name of the University nor the names of its contributors |
55 | * may be used to endorse or promote products derived from this software |
56 | * without specific prior written permission. |
57 | * |
58 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
59 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
60 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
61 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
62 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
63 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
64 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
65 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
66 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
67 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
68 | * SUCH DAMAGE. |
69 | * |
70 | * from: Header: disk.h,v 1.5 92/11/19 04:33:03 torek Exp (LBL) |
71 | * |
72 | * @(#)disk.h 8.2 (Berkeley) 1/9/95 |
73 | */ |
74 | |
75 | #ifndef _SYS_DISK_H_ |
76 | #define _SYS_DISK_H_ |
77 | |
78 | /* |
79 | * Disk device structures. |
80 | */ |
81 | |
82 | #ifdef _KERNEL |
83 | #include <sys/device.h> |
84 | #endif |
85 | #include <sys/dkio.h> |
86 | #include <sys/time.h> |
87 | #include <sys/queue.h> |
88 | #include <sys/mutex.h> |
89 | #include <sys/iostat.h> |
90 | |
91 | #include <prop/proplib.h> |
92 | |
93 | struct buf; |
94 | struct disk; |
95 | struct disklabel; |
96 | struct cpu_disklabel; |
97 | struct lwp; |
98 | struct vnode; |
99 | |
100 | /* |
101 | * Disk information dictionary. |
102 | * |
103 | * This contains general infomation for disk devices. |
104 | * |
105 | * <dict> |
106 | * <key>type</key> |
107 | * <string>...</string> |
108 | * <key>geometry</key> |
109 | * <dict> |
110 | * <!-- See below for disk geometry dictionary |
111 | * contents. --> |
112 | * </dict> |
113 | * |
114 | * <!-- optional information --> |
115 | * <key>rpm</key> |
116 | * <integer>...</integer> |
117 | * <key>sector-interleave</key> |
118 | * <integer>...</integer> |
119 | * <key>track-skew</key> |
120 | * <integer>...</integer> |
121 | * <key>cylinder-skew</key> |
122 | * <integer>...</integer> |
123 | * <key>head-switch-usecs</key> |
124 | * <integer>...</integer> |
125 | * <key>track-seek-usecs</key> |
126 | * <integer>...</integer> |
127 | * <key>removable</key> |
128 | * <false/> |
129 | * <key>ecc</key> |
130 | * <false/> |
131 | * <key>bad-sector-forwarding</key> |
132 | * <true/> |
133 | * <key>ramdisk</key> |
134 | * <false/> |
135 | * <key>back-to-back-transfers</key> |
136 | * <true/> |
137 | * |
138 | * <!-- additional information for SMD drives --> |
139 | * <key>smd-skip-sectoring</key> |
140 | * <false/> |
141 | * <!-- XXX better names for these properties --> |
142 | * <key>smd-mindist</key> |
143 | * <integer>...</integer> |
144 | * <key>smd-maxdist</key> |
145 | * <integer>...</integer> |
146 | * <key>smd-sdist</key> |
147 | * <integer>...</integer> |
148 | * |
149 | * <!-- additional information for ST506 drives --> |
150 | * <!-- XXX better names for these properties --> |
151 | * <key>st506-precompcyl</key> |
152 | * <integer>...</integer> |
153 | * <key>st506-gap3</key> |
154 | * <integer>...</integer> |
155 | * |
156 | * <!-- additional information for ATA drives --> |
157 | * <!-- XXX --> |
158 | * |
159 | * <!-- additional information for SCSI drives --> |
160 | * <!-- XXX --> |
161 | * </dict> |
162 | */ |
163 | |
164 | /* |
165 | * dkwedge_info: |
166 | * |
167 | * Information needed to configure (or query configuration of) a |
168 | * disk wedge. |
169 | */ |
170 | struct dkwedge_info { |
171 | char dkw_devname[16];/* device-style name (e.g. "dk0") */ |
172 | uint8_t dkw_wname[128]; /* wedge name (Unicode, UTF-8) */ |
173 | char dkw_parent[16]; /* parent disk device name */ |
174 | daddr_t dkw_offset; /* LBA offset of wedge in parent */ |
175 | uint64_t dkw_size; /* size of wedge in blocks */ |
176 | char dkw_ptype[32]; /* partition type string */ |
177 | }; |
178 | |
179 | /* |
180 | * dkwedge_list: |
181 | * |
182 | * Structure used to query a list of wedges. |
183 | */ |
184 | struct dkwedge_list { |
185 | void *dkwl_buf; /* storage for dkwedge_info array */ |
186 | size_t dkwl_bufsize; /* size of that buffer */ |
187 | u_int dkwl_nwedges; /* total number of wedges */ |
188 | u_int dkwl_ncopied; /* number actually copied */ |
189 | }; |
190 | |
191 | #ifdef _KERNEL |
192 | /* |
193 | * dkwedge_discovery_method: |
194 | * |
195 | * Structure used to describe partition map parsing schemes |
196 | * used for wedge autodiscovery. |
197 | */ |
198 | struct dkwedge_discovery_method { |
199 | /* link in wedge driver's list */ |
200 | LIST_ENTRY(dkwedge_discovery_method) ddm_list; |
201 | const char *ddm_name; /* name of this method */ |
202 | int ddm_priority; /* search priority */ |
203 | int (*ddm_discover)(struct disk *, struct vnode *); |
204 | }; |
205 | |
206 | #define DKWEDGE_DISCOVERY_METHOD_DECL(name, prio, discover) \ |
207 | static struct dkwedge_discovery_method name ## _ddm = { \ |
208 | { NULL, NULL }, \ |
209 | #name, \ |
210 | prio, \ |
211 | discover \ |
212 | }; \ |
213 | __link_set_add_data(dkwedge_methods, name ## _ddm) |
214 | #endif /* _KERNEL */ |
215 | |
216 | /* Some common partition types */ |
217 | #define DKW_PTYPE_UNKNOWN "" |
218 | #define DKW_PTYPE_UNUSED "unused" |
219 | #define DKW_PTYPE_SWAP "swap" |
220 | #define DKW_PTYPE_V6 "v6" |
221 | #define DKW_PTYPE_V7 "v7" |
222 | #define DKW_PTYPE_SYSV "sysv" |
223 | #define DKW_PTYPE_V71K "v71k" |
224 | #define DKW_PTYPE_V8 "v8" |
225 | #define DKW_PTYPE_FFS "ffs" |
226 | #define DKW_PTYPE_FAT "msdos" |
227 | #define DKW_PTYPE_LFS "lfs" |
228 | #define DKW_PTYPE_OTHER "other" |
229 | #define DKW_PTYPE_HPFS "hpfs" |
230 | #define DKW_PTYPE_ISO9660 "cd9660" |
231 | #define DKW_PTYPE_BOOT "boot" |
232 | #define DKW_PTYPE_AMIGADOS "ados" |
233 | #define DKW_PTYPE_HFS "hfs" |
234 | #define DKW_PTYPE_FILECORE "filecore" |
235 | #define DKW_PTYPE_EXT2FS "ext2fs" |
236 | #define DKW_PTYPE_NTFS "ntfs" |
237 | #define DKW_PTYPE_RAIDFRAME "raidframe" |
238 | #define DKW_PTYPE_CCD "ccd" |
239 | #define DKW_PTYPE_JFS2 "jfs2" |
240 | #define DKW_PTYPE_APPLEUFS "appleufs" |
241 | #define DKW_PTYPE_VINUM "vinum" |
242 | #define DKW_PTYPE_UDF "udf" |
243 | #define DKW_PTYPE_APPLEHFS "hfs" |
244 | #define DKW_PTYPE_SYSVBFS "sysvbfs" |
245 | #define DKW_PTYPE_EFS "efs" |
246 | #define DKW_PTYPE_NILFS "nilfs" |
247 | #define DKW_PTYPE_CGD "cgd" |
248 | #define DKW_PTYPE_MINIXFS3 "minixfs3" |
249 | |
250 | /* |
251 | * Ensure each symbol used in FSTYPE_DEFN in <sys/disklabel.h> |
252 | * has a corresponding DKW_PTYPE_* definition. |
253 | */ |
254 | #define DKW_PTYPE_MSDOS DKW_PTYPE_FAT |
255 | #define DKW_PTYPE_BSDFFS DKW_PTYPE_FFS |
256 | #define DKW_PTYPE_BSDLFS DKW_PTYPE_LFS |
257 | #define DKW_PTYPE_ADOS DKW_PTYPE_AMIGADOS |
258 | #define DKW_PTYPE_EX2FS DKW_PTYPE_EXT2FS |
259 | #define DKW_PTYPE_RAID DKW_PTYPE_RAIDFRAME |
260 | |
261 | /* |
262 | * Disk geometry dictionary. |
263 | * |
264 | * NOTE: Not all geometry information is relevant for every kind of disk. |
265 | * |
266 | * <dict> |
267 | * <key>sectors-per-unit</key> |
268 | * <integer>...</integer> |
269 | * <key>sector-size</key> |
270 | * <integer>...</integer> |
271 | * <key>sectors-per-track</key> |
272 | * <integer>...</integer> |
273 | * <key>tracks-per-cylinder</key> |
274 | * <integer>...</integer> |
275 | * <key>cylinders-per-unit</key> |
276 | * <integer>...</integer> |
277 | * <key>physical-cylinders-per-unit</key> |
278 | * <integer>...</integer> |
279 | * <key>spare-sectors-per-track</key> |
280 | * <integer>...</integer> |
281 | * <key>spare-sectors-per-cylinder</key> |
282 | * <integer>...</integer> |
283 | * <key>alternative-cylinders</key> |
284 | * <integer>...</integer> |
285 | * </dict> |
286 | * NOTE: Not all geometry information is relevant for every kind of disk. |
287 | */ |
288 | |
289 | struct disk_geom { |
290 | int64_t dg_secperunit; /* # of data sectors per unit */ |
291 | uint32_t dg_secsize; /* # of bytes per sector */ |
292 | uint32_t dg_nsectors; /* # of data sectors per track */ |
293 | uint32_t dg_ntracks; /* # of tracks per cylinder */ |
294 | uint32_t dg_ncylinders; /* # of data cylinders per unit */ |
295 | uint32_t dg_secpercyl; /* # of data sectors per cylinder */ |
296 | uint32_t dg_pcylinders; /* # of physical cylinders per unit */ |
297 | |
298 | /* |
299 | * Spares (bad sector replacements) below are not counted in |
300 | * dg_nsectors or dg_secpercyl. Spare sectors are assumed to |
301 | * be physical sectors which occupy space at the end of each |
302 | * track and/or cylinder. |
303 | */ |
304 | uint32_t dg_sparespertrack; |
305 | uint32_t dg_sparespercyl; |
306 | /* |
307 | * Alternative cylinders include maintenance, replacement, |
308 | * configuration description areas, etc. |
309 | */ |
310 | uint32_t dg_acylinders; |
311 | }; |
312 | |
313 | /* |
314 | * Disk partition dictionary. |
315 | * |
316 | * A partition is represented as a dictionary containing generic partition |
317 | * properties (such as starting block and block count), as well as information |
318 | * that is specific to individual partition map formats. |
319 | * |
320 | * <dict> |
321 | * <key>start-block</key> |
322 | * <integer>...</integer> |
323 | * <key>block-count</key> |
324 | * <integer>...</integer> |
325 | * <!-- DKW_PTYPE strings ("" or missing if unknown) --> |
326 | * <key>type</type> |
327 | * <string>...</string> |
328 | * <!-- optional --> |
329 | * <key>name</key> |
330 | * <string>...</string> |
331 | * |
332 | * <!-- these are valid for GPT partition maps --> |
333 | * <key>gpt-type-guid</key> |
334 | * <string>...</string> |
335 | * <key>gpt-partition-guid</key> |
336 | * <string>...</string> |
337 | * <key>gpt-platform-required</key> |
338 | * <false/> |
339 | * |
340 | * <!-- these are valid for 4.4BSD partition maps --> |
341 | * <key>bsd44-partition-type</key> |
342 | * <integer>...</integer> |
343 | * <key>bsd44-fs-fragment-size</key> |
344 | * <integer>...</integer> |
345 | * <key>bsd44-iso9660-session-offset</key> |
346 | * <integer>...</integer> |
347 | * <key>bsd44-ffs-cylinders-per-group</key> |
348 | * <integer>...</integer> |
349 | * <key>bsd44-lfs-segment-shift</key> |
350 | * <integer>...</integer> |
351 | * |
352 | * <!-- these are valid for NeXT partition maps --> |
353 | * <key>next-block-size</key> |
354 | * <integer>...</integer> |
355 | * <key>next-fs-fragment-size</key> |
356 | * <integer>...</integer> |
357 | * <key>next-fs-optimization</key> |
358 | * <string>...</string> <!-- "space" or "time" --> |
359 | * <key>next-fs-cylinders-per-group</key> |
360 | * <integer>...</integer> |
361 | * <key>next-bytes-per-inode-density</key> |
362 | * <integer>...</integer> |
363 | * <key>next-minfree-percentage</key> |
364 | * <integer>...</integer> |
365 | * <key>next-run-newfs-during-init</key> |
366 | * <false/> |
367 | * <key>next-mount-point</key> |
368 | * <string>...</string> |
369 | * <key>next-automount</key> |
370 | * <true/> |
371 | * <key>next-partition-type</key> |
372 | * <string>...</string> |
373 | * |
374 | * <!-- these are valid for MBR partition maps --> |
375 | * <key>mbr-start-head</key> |
376 | * <integer>...</integer> |
377 | * <key>mbr-start-sector</key> |
378 | * <integer>...</integer> |
379 | * <key>mbr-start-cylinder</key> |
380 | * <integer>...</integer> |
381 | * <key>mbr-partition-type</key> |
382 | * <integer>...</integer> |
383 | * <key>mbr-end-head</key> |
384 | * <integer>...</integer> |
385 | * <key>mbr-end-sector</key> |
386 | * <integer>...</integer> |
387 | * <key>mbr-end-cylinder</key> |
388 | * <integer>...</integer> |
389 | * <key>mbr-active-partition</key> |
390 | * <false/> |
391 | * |
392 | * <!-- these are valid for Apple partition maps --> |
393 | * <key>apple-partition-type</key> |
394 | * <string>...</string> |
395 | * <!-- XXX What else do we need? wrstuden? --> |
396 | * |
397 | * <!-- these are valid for RISCiX partition maps --> |
398 | * <key>riscix-partition-type</key> |
399 | * <integer>...</integer> |
400 | * |
401 | * <!-- these are valid for MIPS/SGI partition maps --> |
402 | * <key>mips-partition-type</key> |
403 | * <integer>...</integer> |
404 | * |
405 | * <!-- SunOS 4 partition maps have no specific |
406 | * additional information. Note, however, |
407 | * that SunOS 4 partitions must begin on |
408 | * cylinder boundaries. --> |
409 | * |
410 | * <!-- XXX Need Amiga partition map info --> |
411 | * |
412 | * <!-- these are valid for VTOC partition maps --> |
413 | * <key>vtoc-tag</key> |
414 | * <integer>...</integer> |
415 | * <key>vtoc-unmount</key> |
416 | * <false/> |
417 | * <key>vtoc-read-only</key> |
418 | * <false/> |
419 | * <!-- XXX is this really part of the partition info? --> |
420 | * <key>vtoc-timestamp</key> |
421 | * <integer>...</integer> |
422 | * |
423 | * <!-- mvme68k partition maps use 4.4BSD partition |
424 | * info stuffed into two different areas of the |
425 | * disk information label recognized by BUG. --> |
426 | * |
427 | * <!-- XXX What else? --> |
428 | * </dict> |
429 | */ |
430 | |
431 | struct disk { |
432 | TAILQ_ENTRY(disk) dk_link; /* link in global disklist */ |
433 | const char *dk_name; /* disk name */ |
434 | prop_dictionary_t dk_info; /* reference to disk-info dictionary */ |
435 | struct disk_geom dk_geom; /* cooked version of dk_info */ |
436 | int dk_bopenmask; /* block devices open */ |
437 | int dk_copenmask; /* character devices open */ |
438 | int dk_openmask; /* composite (bopen|copen) */ |
439 | int dk_state; /* label state ### */ |
440 | int dk_blkshift; /* shift to convert DEV_BSIZE to blks */ |
441 | int dk_byteshift; /* shift to convert bytes to blks */ |
442 | |
443 | /* |
444 | * Metrics data; note that some metrics may have no meaning |
445 | * on certain types of disks. |
446 | */ |
447 | struct io_stats *dk_stats; |
448 | |
449 | const struct dkdriver *dk_driver; /* pointer to driver */ |
450 | |
451 | /* |
452 | * Information required to be the parent of a disk wedge. |
453 | */ |
454 | kmutex_t dk_rawlock; /* lock on these fields */ |
455 | u_int dk_rawopens; /* # of openes of rawvp */ |
456 | struct vnode *dk_rawvp; /* vnode for the RAW_PART bdev */ |
457 | |
458 | kmutex_t dk_openlock; /* lock on these and openmask */ |
459 | u_int dk_nwedges; /* # of configured wedges */ |
460 | /* all wedges on this disk */ |
461 | LIST_HEAD(, dkwedge_softc) dk_wedges; |
462 | |
463 | /* |
464 | * Disk label information. Storage for the in-core disk label |
465 | * must be dynamically allocated, otherwise the size of this |
466 | * structure becomes machine-dependent. |
467 | */ |
468 | daddr_t dk_labelsector; /* sector containing label */ |
469 | struct disklabel *dk_label; /* label */ |
470 | struct cpu_disklabel *dk_cpulabel; |
471 | }; |
472 | |
473 | #ifdef _KERNEL |
474 | struct dkdriver { |
475 | void (*d_strategy)(struct buf *); |
476 | void (*d_minphys)(struct buf *); |
477 | int (*d_open)(dev_t, int, int, struct lwp *); |
478 | int (*d_close)(dev_t, int, int, struct lwp *); |
479 | int (*d_diskstart)(device_t, struct buf *); |
480 | void (*d_iosize)(device_t, int *); |
481 | int (*d_dumpblocks)(device_t, void *, daddr_t, int); |
482 | int (*d_lastclose)(device_t); |
483 | int (*d_discard)(device_t, off_t, off_t); |
484 | }; |
485 | #endif |
486 | |
487 | /* states */ |
488 | #define DK_CLOSED 0 /* drive is closed */ |
489 | #define DK_WANTOPEN 1 /* drive being opened */ |
490 | #define DK_WANTOPENRAW 2 /* drive being opened */ |
491 | #define DK_RDLABEL 3 /* label being read */ |
492 | #define DK_OPEN 4 /* label read, drive open */ |
493 | #define DK_OPENRAW 5 /* open without label */ |
494 | |
495 | /* |
496 | * Bad sector lists per fixed disk |
497 | */ |
498 | struct disk_badsectors { |
499 | SLIST_ENTRY(disk_badsectors) dbs_next; |
500 | daddr_t dbs_min; /* min. sector number */ |
501 | daddr_t dbs_max; /* max. sector number */ |
502 | struct timeval dbs_failedat; /* first failure at */ |
503 | }; |
504 | |
505 | struct disk_badsecinfo { |
506 | uint32_t dbsi_bufsize; /* size of region pointed to */ |
507 | uint32_t dbsi_skip; /* how many to skip past */ |
508 | uint32_t dbsi_copied; /* how many got copied back */ |
509 | uint32_t dbsi_left; /* remaining to copy */ |
510 | void * dbsi_buffer; /* region to copy disk_badsectors to */ |
511 | }; |
512 | |
513 | #define DK_STRATEGYNAMELEN 32 |
514 | struct disk_strategy { |
515 | char dks_name[DK_STRATEGYNAMELEN]; /* name of strategy */ |
516 | char *dks_param; /* notyet; should be NULL */ |
517 | size_t dks_paramlen; /* notyet; should be 0 */ |
518 | }; |
519 | |
520 | #define DK_BSIZE2BLKSHIFT(b) ((ffs((b) / DEV_BSIZE)) - 1) |
521 | #define DK_BSIZE2BYTESHIFT(b) (ffs((b)) - 1) |
522 | #define DK_DEV_BSIZE_OK(b) \ |
523 | ((b) >= DEV_BSIZE && ((b) & ((b) - 1)) == 0 && (b) <= MAXPHYS) |
524 | |
525 | #ifdef _KERNEL |
526 | extern int disk_count; /* number of disks in global disklist */ |
527 | |
528 | struct proc; |
529 | |
530 | void disk_attach(struct disk *); |
531 | int disk_begindetach(struct disk *, int (*)(device_t), device_t, int); |
532 | void disk_detach(struct disk *); |
533 | void disk_init(struct disk *, const char *, const struct dkdriver *); |
534 | void disk_destroy(struct disk *); |
535 | void disk_busy(struct disk *); |
536 | void disk_unbusy(struct disk *, long, int); |
537 | bool disk_isbusy(struct disk *); |
538 | struct disk *disk_find(const char *); |
539 | int disk_ioctl(struct disk *, dev_t, u_long, void *, int, struct lwp *); |
540 | void disk_set_info(device_t, struct disk *, const char *); |
541 | |
542 | void dkwedge_init(void); |
543 | int dkwedge_add(struct dkwedge_info *); |
544 | int dkwedge_del(struct dkwedge_info *); |
545 | void dkwedge_delall(struct disk *); |
546 | int dkwedge_list(struct disk *, struct dkwedge_list *, struct lwp *); |
547 | void dkwedge_discover(struct disk *); |
548 | int dkwedge_read(struct disk *, struct vnode *, daddr_t, void *, size_t); |
549 | device_t dkwedge_find_by_wname(const char *); |
550 | device_t dkwedge_find_by_parent(const char *, size_t *); |
551 | const char *dkwedge_get_parent_name(dev_t); |
552 | void dkwedge_print_wnames(void); |
553 | device_t dkwedge_find_partition(device_t, daddr_t, uint64_t); |
554 | |
555 | #endif |
556 | |
557 | #endif /* _SYS_DISK_H_ */ |
558 | |