1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 #ifndef _SYS_MDVAR_H
27 #define _SYS_MDVAR_H
28
29 #include <sys/types.h>
30 #include <sys/kmem.h>
31 #include <sys/mkdev.h>
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/t_lock.h>
35 #include <sys/open.h>
36 #include <sys/devops.h>
37 #include <sys/modctl.h>
38 #ifdef DEBUG
39 #include <sys/thread.h>
40 #endif
41 #include <sys/kstat.h>
42 #include <sys/efi_partition.h>
43 #include <sys/byteorder.h>
44 #include <sys/door.h>
45
46 #include <sys/lvm/mdmn_commd.h>
47 #include <sys/lvm/mdio.h>
48 #include <sys/lvm/md_mdiox.h>
49 #include <sys/lvm/md_mddb.h>
50 #include <sys/lvm/md_notify.h>
51
52 #ifdef __cplusplus
53 extern "C" {
54 #endif
55
56 /*
57 * defaults
58 */
59 #define NMD_DEFAULT 128 /* number of metadevices */
60 #define MD_NOPS 25 /* number of misc modules */
61 #define MAXBOOTLIST 64
62
63 /*
64 * Needed for backwards-compatibility with metadevices created under
65 * 2.6 or earlier. Back then, a krwlock_t was twelve bytes. More
66 * recently, it's four bytes. Since these get included in structures
67 * written out to disk, we have to make sure we're using the largest
68 * size. Things will get interesting if krwlock_t ever gets bigger
69 * than twelve bytes.
70 */
71
72 typedef union _md_krwlock {
73 krwlock_t lock;
74 struct {
75 void *_opaque[3];
76 } xx;
77 } md_krwlock_t;
78
79 typedef struct {
80 kmutex_t md_io_mx; /* counter mutex */
81 kcondvar_t md_io_cv; /* ioctl wait on if draining */
82 long io_cnt; /* number of I/Os */
83 long io_state; /* !0 if waiting on zero */
84 } md_set_io_t;
85
86 typedef enum set_iostate {
87 MD_SET_ACTIVE = 1,
88 MD_SET_RELEASE = 2
89 }set_iostate_t;
90
91 /*
92 * for md_dev64_t translation
93 */
94 struct md_xlate_table {
95 dev32_t mini_devt;
96 dev32_t targ_devt;
97 };
98
99 extern struct md_xlate_table *md_tuple_table;
100
101 /*
102 * for major number translation
103 */
104
105 struct md_xlate_major_table {
106 char *drv_name;
107 major_t targ_maj;
108 };
109
110 extern struct md_xlate_major_table *md_major_tuple_table;
111
112 extern int md_tuple_length;
113 extern uint_t md_majortab_len;
114 extern int md_in_upgrade;
115
116 extern md_mn_nodeid_t md_mn_mynode_id;
117
118 #define MD_UPGRADE (md_in_upgrade == 1)
119
120 /*
121 * Flags used during upgrade:
122 *
123 * md_keep_repl_state flag means that mddb should be kept in the format
124 * that was found on disk (non-device id format vs. device id format).
125 * This is used during the upgrade process when install is probing
126 * for root disks so that the user can choose the one to be upgraded.
127 *
128 * md_devid_destroy flag is used to destroy device ids stored in the
129 * metadevice state database (mddb).
130 *
131 * The md_devid_destroy flag is to be used only in a catastrophic failure
132 * case. An example of this would be if a user upgrades firmware on all
133 * disks where this causes the disks to now have different device id's.
134 * The user would not be able to boot a mirror'd root filesystem since the
135 * system would recognize none of the device id's stored in the mddb.
136 * This flag would destroy all device id information stored in the mddb and
137 * if the md_keep_repl_state flag was not set, the mddb would be reconverted
138 * to device id format on SLVM startup and all of the device id
139 * information would be regenerated.
140 *
141 * If the md_devid_destroy flag is set and the md_keep_repl_state flag is
142 * set, the mddb's would have their device id information destroyed and
143 * would be left in non-devid format since the device id information would
144 * not be regenerated.
145 *
146 * This flag is not documented anywhere and is only to be used as a last
147 * resort as in the described case or if a device driver has a bug where
148 * device id's are found to not be unique. If device id's aren't unique,
149 * the user could run without device id's until a patch is released for
150 * that driver.
151 */
152 extern int md_keep_repl_state;
153 extern int md_devid_destroy;
154 extern int mdmn_door_did;
155 #ifdef _KERNEL
156 extern door_handle_t mdmn_door_handle;
157 #endif /* _KERNEL */
158
159 /*
160 * An io_lock mechanism for raid, the MD_UL_XXXX bits are used for
161 * convenience.
162 */
163 typedef struct md_io_lock {
164 ulong_t io_readercnt; /* number of unit readers */
165 ulong_t io_wanabecnt; /* # pending on becoming unit writer */
166 ulong_t io_lock;
167 void *io_list_front;
168 void *io_list_back;
169 kmutex_t io_mx;
170 kcondvar_t io_cv;
171 kmutex_t io_list_mutex; /* list of waiting io */
172 kthread_id_t io_owner; /* writer thread */
173 } md_io_lock_t;
174
175 /*
176 * The following flags are in un_flag field of mdc_unit struct.
177 */
178 #define MD_LABELED 0x1 /* First sector of the metadevice is a label */
179 #define MD_EFILABEL 0x2 /* This md has an EFI label and no vtoc */
180
181 /*
182 * This is the number of bytes a DKIOCGETEFI ioctl returns
183 * For now it's one time the header and once the size for a partition info
184 */
185 #define MD_EFI_LABEL_SIZE (sizeof (efi_gpt_t) + sizeof (efi_gpe_t))
186
187 /* This is the number of bytes consumed by efi_gpe_PartitionName */
188 #define MD_EFI_PARTNAME_BYTES (EFI_PART_NAME_LEN * sizeof (ushort_t))
189
190 typedef enum hs_cmds {
191 HS_GET, HS_FREE, HS_BAD, HSP_INCREF, HSP_DECREF, HS_MKDEV
192 } hs_cmds_t;
193
194 typedef struct md_link {
195 struct md_link *ln_next;
196 set_t ln_setno;
197 uint_t ln_id;
198 } md_link_t;
199
200 typedef struct mdi_unit {
201 md_link_t ui_link;
202 ulong_t ui_readercnt; /* number of unit readers */
203 ulong_t ui_wanabecnt; /* # pending on becoming unit writer */
204 ulong_t ui_lock;
205 kmutex_t ui_mx;
206 kcondvar_t ui_cv;
207 int ui_opsindex;
208 uint_t ui_ocnt[OTYPCNT]; /* open counts */
209 md_io_lock_t *ui_io_lock; /* pointer to io lock */
210 kstat_t *ui_kstat; /* kernel statistics */
211 kthread_id_t ui_owner; /* writer thread */
212 uint_t ui_tstate; /* transient state bits */
213 uint_t ui_capab; /* Capability bits supported */
214 } mdi_unit_t;
215
216 /*
217 * Following are used with ui_lock
218 * which is in the unit incore structure.
219 */
220 #define MD_UL_WRITER 0x0001 /* Stall all new strategy calls */
221 #define MD_UL_WANABEWRITER 0x0002
222 #define MD_UL_OPENORCLOSE 0x0004
223
224 #define MD_UL_OPEN 0x0008 /* unit is open */
225 #define MD_UL_EXCL 0x0010 /* unit is open exclusively */
226
227 /*
228 * The softpart open code may do an I/O to validate the watermarks
229 * and should hold no open locks during this I/O. So, mark the unit
230 * as OPENINPROGRESS and drop the locks. This will keep any other
231 * softpart open's waiting until the validate has completed.
232 */
233 #define MD_UL_OPENINPROGRESS 0x0020 /* Open in Progress */
234
235 /*
236 * Following are used with ui_tstate to specify any transient states which
237 * occur during metadevice operation. These are not written to the metadb as
238 * they do not represent a failure of the underlying metadevice.
239 * Transient errors are stored in the lower 16 bits and other transient
240 * state is stored in the upper 16 bits.
241 * MD_NOTOPENABLE should contain all the states that are set prior to an
242 * open (by snarf) and that indicate that a metadevice cannot be opened.
243 */
244 #define MD_DEV_ERRORED 0x0000ffff /* ui_tstate error bits */
245 #define MD_EOF_METADEVICE 0x00000001 /* EOF'd metadevice */
246 #define MD_64MD_ON_32KERNEL 0x00000002 /* 64bit metadev on 32bit kernel */
247 #define MD_INACCESSIBLE 0x00000004 /* metadevice unavailable */
248 #define MD_RETRYING 0x00010000 /* retrying errored failfast I/O */
249 #define MD_OPENLOCKED 0x00020000 /* MN: open locked before removing */
250 #define MD_ERR_PENDING 0x00040000 /* MN: error pending */
251 #define MD_ABR_CAP 0x00080000 /* MN: Application Based Recovery */
252 #define MD_DMR_CAP 0x00100000 /* MN: Directed Mirror Read */
253 #define MD_RELEASE_IOERR_DONE 0x00200000 /* ioerr console message done */
254 #define MD_RESYNC_NOT_DONE 0x00400000 /* resync not done yet */
255
256 /* A metadevice cannot be opened when these states are set */
257 #define MD_NOTOPENABLE (MD_EOF_METADEVICE|MD_64MD_ON_32KERNEL)
258
259 typedef struct md_ioctl_lock {
260 int l_flags; /* locks held */
261 mdi_unit_t *l_ui; /* unit for which lock is held */
262 } md_ioctl_lock_t;
263
264 #define MD_MASTER_DROPPED 0x0001
265 #define MD_READER_HELD 0x0002
266 #define MD_WRITER_HELD 0x0004
267 #define MD_IO_HELD 0x0008
268 #define MD_ARRAY_READER 0x0010
269 #define MD_ARRAY_WRITER 0x0020
270 #define STALE_OK 0x0100
271 #define NO_OLD 0x0200
272 #define NO_LOCK 0x0400
273 #define MD_MT_IOCTL 0x80000 /* MD_GBL_IOCTL_LOCK not set */
274 #define IOLOCK md_ioctl_lock_t
275
276 #define WR_LOCK MD_WRITER_HELD
277 #define RD_LOCK MD_READER_HELD | STALE_OK
278 #define ARRAY_WRITER MD_ARRAY_WRITER
279 #define ARRAY_READER MD_ARRAY_READER
280 #define WRITERS MD_WRITER_HELD | MD_IO_HELD | MD_ARRAY_WRITER
281 #define READERS RD_LOCK | MD_ARRAY_READER
282
283 #define IOLOCK_RETURN_IOCTLEND(code, lock) \
284 md_ioctl_lock_exit((code), (lock)->l_flags, (lock)->l_ui, TRUE)
285
286 #define IOLOCK_RETURN(code, lock) \
287 md_ioctl_lock_exit((code), (lock)->l_flags, (lock)->l_ui, FALSE)
288
289 #define IOLOCK_RETURN_RELEASE(code, lock) \
290 md_ioctl_releaselocks((code), (lock)->l_flags, (lock)->l_ui)
291
292 #define IOLOCK_RETURN_REACQUIRE(lock) \
293 md_ioctl_reacquirelocks((lock)->l_flags, (lock)->l_ui)
294
295 #define IOLOCK_INIT(lock) bzero((caddr_t)(lock), sizeof (*(lock)))
296 /*
297 * checks to be sure locks are held
298 */
299 #define UNIT_WRITER_HELD(un) \
300 (MDI_UNIT(MD_SID(un))->ui_lock & MD_UL_WRITER)
301 #define UNIT_READER_HELD(un) \
302 (MDI_UNIT(MD_SID(un))->ui_readercnt != 0)
303 #define IO_WRITER_HELD(un) \
304 (MDI_UNIT(MD_SID(un))->ui_io_lock->io_lock & MD_UL_WRITER)
305 #define IO_READER_HELD(un) \
306 (MDI_UNIT(MD_SID(un))->ui_io_lock->io_readercnt != 0)
307
308 #ifdef DEBUG
309 #define STAT_INC(statvar) \
310 statvar++
311 #define STAT_DEC(statvar) \
312 statvar--
313 #define STAT_ZERO(statvar) \
314 statvar = 0;
315 #define STAT_MAX(statmax, statvar) \
316 { \
317 statvar++; \
318 if (statvar > statmax) \
319 statmax = statvar; \
320 }
321 #define STAT_CHECK(statvar, value) \
322 { \
323 if (value) \
324 statvar++; \
325 }
326 #else
327 #define STAT_INC(statvar)
328 #define STAT_DEC(statvar)
329 #define STAT_ZERO(statvar)
330 #define STAT_MAX(statmax, statvar)
331 #define STAT_CHECK(statvar, value)
332 #endif
333 /*
334 * bit map related macros
335 */
336 #define setbit(a, i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
337 #define clrbit(a, i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
338 #define isset(a, i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
339 #define isclr(a, i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
340
341 typedef struct daemon_queue {
342 int maxq_len;
343 int qlen;
344 int treqs; /* total number of requests */
345 struct daemon_queue *dq_next;
346 struct daemon_queue *dq_prev;
347 void (*dq_call)();
348 } daemon_queue_t;
349
350 #define DAEMON_QUEUE daemon_queue_t dq;
351
352 #ifdef _KERNEL
353 #include <sys/buf.h>
354 #include <sys/dkio.h>
355 #include <sys/vtoc.h>
356
357 #define MD_DEV2SET(d) (MD_MIN2SET(md_getminor(d)))
358
359 #define MD_UNIT(m) (md_set[MD_MIN2SET(m)].s_un[MD_MIN2UNIT(m)])
360 #define MDI_UNIT(m) ((mdi_unit_t *) \
361 md_set[MD_MIN2SET(m)].s_ui[MD_MIN2UNIT(m)])
362 #define MD_VOIDUNIT(m) (md_set[MD_MIN2SET(m)].s_un[MD_MIN2UNIT(m)])
363 #define MDI_VOIDUNIT(m) (md_set[MD_MIN2SET(m)].s_ui[MD_MIN2UNIT(m)])
364
365 /*
366 * This is the current maximum number of real disks per Virtual Disk.
367 */
368 extern uint_t md_mdelay; /* md_mirror timeout delay */
369
370 #define MD_ADM_MINOR L_MAXMIN32 /* the minor number for md_admin */
371 #define MD_MDELAY (md_mdelay)
372 #define NUM_USEC_IN_SEC 1000000 /* 1 million usec in a second */
373
374 #define ANY_SERVICE -1 /* md_get_named_service() wild card */
375
376 /*
377 * daemon threads are used in multiple places in md. The following set of
378 * structures and routines allow a common way to create and initialize them.
379 *
380 * md_requestq_entry_t - entry of creating request queues.
381 * struct mdq_anchor - request queue header
382 *
383 * Functions associated with request queues:
384 *
385 * int init_requestq_entry -
386 * void daemon_request - put a request on the queue.
387 */
388
389 typedef struct md_requestq_entry {
390 struct mdq_anchor *dispq_headp;
391 int *num_threadsp; /* threads servicing the queue */
392 } md_requestq_entry_t;
393
394 #define NULL_REQUESTQ_ENTRY(rqp)\
395 ((rqp)->dispq_headp == NULL || (rqp)->num_threadsp == NULL)
396
397 /* this typedef is used to differentiate between the two call styles */
398 typedef enum callstyle {
399 REQ_OLD,
400 REQ_NEW
401 } callstyle_t;
402
403
404 #define daemon_request_new daemon_request
405
406 typedef struct mdq_anchor {
407 DAEMON_QUEUE
408 kcondvar_t a_cv; /* Request has been put on queue */
409 kmutex_t a_mx;
410 } mdq_anchor_t;
411
412 typedef struct daemon_request {
413 DAEMON_QUEUE
414 kmutex_t dr_mx;
415 int dr_pending;
416 timeout_id_t dr_timeout_id;
417 } daemon_request_t;
418
419 typedef struct sv_dev {
420 set_t setno;
421 side_t side;
422 mdkey_t key;
423 } sv_dev_t;
424
425 /*
426 * Types of device probes
427 */
428
429
430 typedef struct probe_req {
431 DAEMON_QUEUE
432 minor_t mnum; /* mnum of the metadevice to probe */
433 void *private_handle; /* private handle */
434 intptr_t (*probe_fcn)(); /* type of probeing to be done */
435 } probe_req_t;
436
437 /* Global flags */
438 #define MD_NO_GBL_LOCKS_HELD 0x0000 /* currently holding no global locks */
439 #define MD_GBL_DAEMONS_LIVE 0x0001 /* master daemon has been started. */
440 #define MD_GBL_DAEMONS_DIE 0x0002
441 #define MD_GBL_HALTED 0x0004 /* driver is shut down */
442
443 /* Available bit was GBL_STALE 0x0008 */
444
445 #define MD_GBL_IOCTL_LOCK 0x0010 /* single-threads ioctls */
446 #define MD_GBL_HS_LOCK 0x0020 /* single-threads hotspares */
447 #define MD_GBL_OPEN 0x0040 /* admin is open */
448 #define MD_GBL_EXCL 0x0080 /* admin is open exclusively */
449
450 #define MD_OFLG_NULL 0x0000 /* Null flag */
451 #define MD_OFLG_CONT_ERRS 0x0001 /* Continue on open errors */
452 #define MD_OFLG_PROBEDEV 0x0002 /* force a simulated open */
453 #define MD_OFLG_ISINIT 0x0004 /* raid initialization */
454 #define MD_OFLG_FROMIOCTL 0x0008 /* Called from an ioctl handler */
455
456
457 typedef struct md_named_services {
458
459 intptr_t (*md_service)();
460 char *md_name;
461 } md_named_services_t;
462
463 typedef enum md_snarfcmd {MD_SNARF_CLEANUP, MD_SNARF_DOIT} md_snarfcmd_t;
464
465 typedef struct md_ops {
466 int (*md_open)(
467 dev_t *devp,
468 int flag,
469 int otyp,
470 cred_t *credp,
471 int md_oflags);
472 int (*md_close)(
473 dev_t dev,
474 int flag,
475 int otyp,
476 cred_t *credp,
477 int md_oflags);
478 void (*md_strategy)(
479 buf_t *bufp,
480 int flag,
481 void *private);
482 int (*md_print)(); /* unused now */
483 int (*md_dump)(
484 dev_t dev,
485 caddr_t addr,
486 daddr_t blkno,
487 int nblk);
488 int (*md_read)(
489 dev_t dev,
490 struct uio *uiop,
491 cred_t *credp);
492 int (*md_write)(
493 dev_t dev,
494 struct uio *uiop,
495 cred_t *credp);
496 int (*md_ioctl)(
497 dev_t dev,
498 int cmd,
499 void *data,
500 int mode,
501 IOLOCK *lockp);
502 int (*md_snarf)(
503 md_snarfcmd_t cmd,
504 set_t setno);
505 int (*md_halt)();
506 int (*md_aread)(
507 dev_t dev,
508 struct aio_req *aiop,
509 cred_t *credp);
510 int (*md_awrite)(
511 dev_t dev,
512 struct aio_req *aiop,
513 cred_t *credp);
514 int (*md_imp_set)(
515 set_t setno);
516 md_named_services_t *md_services;
517 md_krwlock_t md_link_rw;
518 md_link_t *md_head;
519 /*
520 * NOTE: when TSlvm s10/onnv compatibility is not an issue:
521 * o md_modid and md_locked should be deleted.
522 * o md_mod should be added
523 * ddi_modhandle_t md_mod;
524 * and used instead of the md_mods array (md_mods should
525 * be deleted).
526 */
527 int md_modid;
528 int md_locked;
529 int md_selfindex;
530 struct md_ops *md_next;
531 md_driver_t md_driver;
532 /* NOTE: TSlvm depends on offsets in and sizeof this structure */
533 } md_ops_t;
534
535 /* macro to generate linkage for a md misc plugin module */
536 #define md_noop
537 #define MD_PLUGIN_MISC_MODULE(desc, init_init, fini_uninit) \
538 static struct modlmisc modlmisc = { \
539 &mod_miscops, "Solaris Volume Manager " desc \
540 }; \
541 static struct modlinkage modlinkage = { \
542 MODREV_1, (void *)&modlmisc, NULL \
543 }; \
544 int \
545 _init(void) \
546 { \
547 int i; \
548 init_init; \
549 if ((i = mod_install(&modlinkage)) != 0) { \
550 fini_uninit; \
551 } \
552 return (i); \
553 } \
554 int \
555 _fini() \
556 { \
557 int i; \
558 if ((i = mod_remove(&modlinkage)) == 0) { \
559 fini_uninit; \
560 } \
561 return (i); \
562 } \
563 int \
564 _info(struct modinfo *modinfop) \
565 { \
566 return (mod_info(&modlinkage, modinfop)); \
567 }
568
569 typedef enum md_haltcmd {MD_HALT_ALL, MD_HALT_CHECK, MD_HALT_DOIT,
570 MD_HALT_CLOSE, MD_HALT_OPEN, MD_HALT_UNLOAD
571 } md_haltcmd_t;
572
573 /*
574 * To support cpr (Energy Star) we need to know when the resync threads are
575 * running to not allow suspention.
576 */
577 typedef struct md_resync_thds_cnt {
578 int md_raid_resync; /* count of active raid resync threads */
579 int md_mirror_resync; /* count of active mirror resync threads */
580 kmutex_t md_resync_mutex; /* protects both resync counts */
581 } md_resync_t;
582
583 /*
584 * flags used with call to individual strategy routines
585 */
586 #define MD_STR_PASSEDON 0x0000ffff
587 #define MD_STR_NOTTOP 0x00000001
588 #define MD_STR_MAPPED 0x00000002 /* set when buf_t is mapped in */
589 #define MD_STR_ABR 0x00000004 /* use ABR to handle any recovery */
590 #define MD_STR_WMUPDATE 0x00000008 /* set if updating watermarks for sp */
591 #define MD_IO_COUNTED 0x00000400 /* io has been counted */
592 #define MD_NOBLOCK 0x00000800 /* do not block io durring release */
593
594 #define MD_STR_WAR 0x00010000 /* this write is write after read */
595 #define MD_STR_WOW 0x00020000 /* handling a write-on-write */
596 #define MD_STR_DMR 0x00040000 /* Directed Read request */
597 #define MD_STR_DIRTY_RD 0x00080000 /* Read of a dirty block */
598 #define MD_STR_FLAG_ERR 0x00100000 /* Flag any write error on this i/o */
599 #define MD_STR_BLOCK_OK 0x00200000 /* Flag if caller i/o can be blocked */
600
601 /*
602 * Bits for return value of md_getdevnum
603 */
604 #define MD_TRUST_DEVT 1
605 #define MD_NOTRUST_DEVT 0
606
607 /* Flag for drivers to pass to kmem_cache_alloc() */
608 #define MD_ALLOCFLAGS (KM_PUSHPAGE | KM_SLEEP)
609
610 /* Named services */
611 #define MD_CHECK_OFFLINE "check_offline"
612 #define MD_INC_ABR_COUNT "inc abr count"
613 #define MD_DEC_ABR_COUNT "dec abr count"
614
615 /* md_getdevname_common flags for namespace lock */
616 #define MD_WAIT_LOCK 0
617 #define MD_NOWAIT_LOCK 1
618
619 /* Externals from md.c */
620 extern int md_snarf_db_set(set_t setno, md_error_t *ep);
621 extern void get_info(struct dk_cinfo *, minor_t);
622 extern void get_minfo(struct dk_minfo *, minor_t);
623 extern int mdstrategy(buf_t *);
624 extern int md_create_minor_node(set_t, minor_t);
625 extern void md_nblocks_set(minor_t mnum, uint64_t nblocks);
626
627 /* External from md_subr.c */
628 extern int md_inc_iocount(set_t);
629 extern void md_inc_iocount_noblock(set_t);
630 extern void md_dec_iocount(set_t);
631 extern int md_isblock_setio(set_t);
632 extern int md_block_setio(set_t);
633 extern void md_clearblock_setio(set_t);
634 extern void md_unblock_setio(set_t);
635 extern int md_tas_block_setio(set_t);
636 extern void md_biodone(struct buf *);
637 extern void md_bioreset(struct buf *);
638 extern md_dev64_t md_xlate_targ_2_mini(md_dev64_t);
639 extern md_dev64_t md_xlate_mini_2_targ(md_dev64_t);
640 extern void md_xlate_free(int);
641 extern major_t md_targ_name_to_major(char *);
642 extern char *md_targ_major_to_name(major_t);
643 extern void md_majortab_free();
644 extern void md_set_status(int);
645 extern void md_clr_status(int);
646 extern int md_get_status(void);
647 extern void md_set_setstatus(set_t, int);
648 extern void md_clr_setstatus(set_t, int);
649 extern uint_t md_get_setstatus(set_t);
650 extern void *md_unit_readerlock(mdi_unit_t *);
651 extern void *md_unit_writerlock(mdi_unit_t *);
652 extern void md_unit_readerexit(mdi_unit_t *);
653 extern void md_unit_writerexit(mdi_unit_t *);
654 extern void md_ioctl_releaselocks(int, int, mdi_unit_t *);
655 extern void md_ioctl_reacquirelocks(int, mdi_unit_t *);
656 extern int md_ioctl_lock_exit(int, int, mdi_unit_t *, int);
657 extern int md_ioctl_lock_enter(void);
658 extern void *md_ioctl_readerlock(IOLOCK *, mdi_unit_t *);
659 extern void md_ioctl_readerexit(IOLOCK *);
660 extern void *md_ioctl_writerlock(IOLOCK *, mdi_unit_t *);
661 extern void md_ioctl_writerexit(IOLOCK *);
662 extern void md_ioctl_io_exit(IOLOCK *);
663 extern void *md_ioctl_io_lock(IOLOCK *, mdi_unit_t *);
664 extern void md_ioctl_droplocks(IOLOCK *);
665 extern void md_array_writer(IOLOCK *);
666 extern void md_array_reader(IOLOCK *);
667 extern void *md_ioctl_openclose_enter(IOLOCK *, mdi_unit_t *);
668 extern void md_ioctl_openclose_exit(IOLOCK *);
669 extern void md_ioctl_openclose_exit_lh(IOLOCK *);
670 extern void *md_unit_openclose_enter(mdi_unit_t *);
671 extern void md_unit_openclose_exit(mdi_unit_t *);
672 extern void md_unit_openclose_exit_lh(mdi_unit_t *);
673 extern int md_unit_isopen(mdi_unit_t *ui);
674 extern int md_unit_incopen(minor_t mnum, int flag, int otyp);
675 extern int md_unit_decopen(minor_t mnum, int otyp);
676 extern void *md_io_readerlock(mdi_unit_t *);
677 extern void *md_io_writerlock(mdi_unit_t *);
678 extern void md_io_readerexit(mdi_unit_t *);
679 extern void md_io_writerexit(mdi_unit_t *);
680 extern intptr_t (*md_get_named_service())();
681 extern int init_requestq(md_requestq_entry_t *, void (*)(),
682 caddr_t, int, int);
683 extern void daemon_request(mdq_anchor_t *, void(*)(),
684 daemon_queue_t *, callstyle_t);
685 extern void md_daemon(int, mdq_anchor_t *);
686 extern void mddb_commitrec_wrapper(mddb_recid_t);
687 extern void mddb_commitrecs_wrapper(mddb_recid_t *);
688 extern void mddb_deleterec_wrapper(mddb_recid_t);
689 extern void md_holdset_enter(set_t setno);
690 extern void md_holdset_exit(set_t setno);
691 extern int md_holdset_testandenter(set_t setno);
692 extern void md_haltsnarf_enter(set_t setno);
693 extern void md_haltsnarf_exit(set_t setno);
694 extern void md_haltsnarf_wait(set_t setno);
695 extern int md_halt_set(set_t setno, enum md_haltcmd cmd);
696 extern int md_halt(int global_lock_flag);
697 extern int md_layered_open(minor_t, md_dev64_t *, int);
698 extern void md_layered_close(md_dev64_t, int);
699 extern char *md_get_device_name(md_dev64_t);
700 extern int errdone(mdi_unit_t *, struct buf *, int);
701 extern int md_checkbuf(mdi_unit_t *, md_unit_t *, buf_t *);
702 extern int md_start_daemons(int init_queues);
703 extern int md_loadsubmod(set_t, char *, int);
704 extern int md_getmodindex(md_driver_t *, int, int);
705 extern void md_call_strategy(buf_t *, int, void *);
706 extern int md_call_ioctl(md_dev64_t, int, void *, int, IOLOCK *);
707 extern void md_rem_link(set_t, int, krwlock_t *, md_link_t **);
708 extern int md_dev_exists(md_dev64_t);
709 extern md_parent_t md_get_parent(md_dev64_t);
710 extern void md_set_parent(md_dev64_t, md_parent_t);
711 extern void md_reset_parent(md_dev64_t);
712 extern struct hot_spare_pool *find_hot_spare_pool(set_t, int);
713 extern int md_hot_spare_ifc(hs_cmds_t, mddb_recid_t, u_longlong_t, int,
714 mddb_recid_t *, mdkey_t *, md_dev64_t *, diskaddr_t *);
715 extern int md_notify_interface(md_event_cmds_t cmd, md_tags_t type,
716 set_t set, md_dev64_t dev, md_event_type_t event);
717 extern void svm_gen_sysevent(char *se_class, char *se_subclass,
718 uint32_t tag, set_t setno, md_dev64_t devid);
719 extern void md_create_unit_incore(minor_t, md_ops_t *, int);
720 extern void md_destroy_unit_incore(minor_t, md_ops_t *);
721 extern void md_rem_names(sv_dev_t *, int);
722 struct uio;
723 extern int md_chk_uio(struct uio *);
724 extern char *md_shortname(minor_t mnum);
725 extern char *md_devname(set_t setno, md_dev64_t dev, char *buf,
726 size_t size);
727 extern void md_minphys(buf_t *);
728 extern void md_kstat_init(minor_t mnum);
729 extern void md_kstat_init_ui(minor_t mnum, mdi_unit_t *ui);
730 extern void md_kstat_destroy(minor_t mnum);
731 extern void md_kstat_destroy_ui(mdi_unit_t *ui);
732 extern void md_kstat_waitq_enter(mdi_unit_t *ui);
733 extern void md_kstat_waitq_to_runq(mdi_unit_t *ui);
734 extern void md_kstat_waitq_exit(mdi_unit_t *ui);
735 extern void md_kstat_runq_enter(mdi_unit_t *ui);
736 extern void md_kstat_runq_exit(mdi_unit_t *ui);
737 extern void md_kstat_done(mdi_unit_t *ui, buf_t *bp, int war);
738 extern pid_t md_getpid(void);
739 extern proc_t *md_getproc(void);
740 extern int md_checkpid(pid_t pid, proc_t *proc);
741 extern char *md_strdup(char *cp);
742 extern void freestr(char *cp);
743 extern int md_check_ioctl_against_unit(int, mdc_unit_t);
744 extern mddb_recid_t md_vtoc_to_efi_record(mddb_recid_t, set_t);
745
746 extern int mdmn_ksend_message(set_t, md_mn_msgtype_t, uint_t,
747 md_mn_nodeid_t, char *, int, md_mn_kresult_t *);
748 extern void mdmn_ksend_show_error(int, md_mn_kresult_t *, const char *);
749 extern int mdmn_send_capability_message(minor_t, volcap_t, IOLOCK *);
750 extern void mdmn_clear_all_capabilities(minor_t);
751 extern int md_init_probereq(struct md_probedev_impl *p,
752 daemon_queue_t **hdrpp);
753 extern boolean_t callb_md_mrs_cpr(void *, int);
754 extern void md_upd_set_unnext(set_t, unit_t);
755 extern int md_rem_selfname(minor_t);
756 extern void md_rem_hspname(set_t, mdkey_t);
757 extern void *md_create_taskq(set_t, minor_t);
758
759 /* Externals from md_ioctl.c */
760 extern int md_mn_is_commd_present(void);
761 extern int md_mn_is_commd_present_lite(void);
762 extern void md_mn_clear_commd_present(void);
763 extern int md_admin_ioctl(md_dev64_t, int, caddr_t, int, IOLOCK *lockp);
764 extern void md_get_geom(md_unit_t *, struct dk_geom *);
765 extern int md_set_vtoc(md_unit_t *, struct vtoc *);
766 extern void md_get_vtoc(md_unit_t *, struct vtoc *);
767 extern int md_set_extvtoc(md_unit_t *, struct extvtoc *);
768 extern void md_get_extvtoc(md_unit_t *, struct extvtoc *);
769 extern void md_get_cgapart(md_unit_t *, struct dk_map *);
770 extern void md_get_efi(md_unit_t *, char *);
771 extern int md_set_efi(md_unit_t *, char *);
772 extern int md_dkiocgetefi(minor_t, void *, int);
773 extern int md_dkiocsetefi(minor_t, void *, int);
774 extern int md_dkiocpartition(minor_t, void *, int);
775 extern void md_remove_minor_node(minor_t);
776
777
778 /* Externals from md_names.c */
779 extern mdkey_t md_setdevname(set_t, side_t, mdkey_t, char *, minor_t, char *,
780 int imp_flag, ddi_devid_t devid, char *minorname,
781 set_t, md_error_t *);
782 extern int md_getdevname(set_t, side_t, mdkey_t, md_dev64_t, char *,
783 size_t);
784 extern int md_getdevname_common(set_t, side_t, mdkey_t, md_dev64_t, char *,
785 size_t, int);
786 extern int md_gethspinfo(set_t, side_t, mdkey_t, char *, hsp_t *,
787 char *);
788 extern int md_getkeyfromdev(set_t, side_t, md_dev64_t, mdkey_t *, int *);
789 extern int md_devid_found(set_t, side_t, mdkey_t);
790 extern int md_getnment(set_t, side_t, mdkey_t, md_dev64_t,
791 char *, uint_t, major_t *, minor_t *, mdkey_t *);
792 extern md_dev64_t md_getdevnum(set_t, side_t, mdkey_t, int);
793 extern mdkey_t md_getnextkey(set_t, side_t, mdkey_t, uint_t *);
794 extern int md_remdevname(set_t, side_t, mdkey_t);
795 extern mdkey_t md_setshared_name(set_t, char *, int);
796 extern char *md_getshared_name(set_t, mdkey_t);
797 extern int md_remshared_name(set_t, mdkey_t);
798 extern mdkey_t md_getshared_key(set_t, char *);
799 extern int md_setshared_data(set_t, uint_t, caddr_t);
800 extern caddr_t md_getshared_data(set_t, uint_t);
801 extern int md_load_namespace(set_t, md_error_t *ep, int);
802 extern void md_unload_namespace(set_t, int);
803 extern int md_nm_did_chkspace(set_t);
804 extern void md_bioinit();
805 extern buf_t *md_bioclone(buf_t *, off_t, size_t, dev_t, diskaddr_t,
806 int (*)(buf_t *), buf_t *, int);
807 extern int md_getdevid(set_t setno, side_t side, mdkey_t key,
808 ddi_devid_t devid, ushort_t *did_size);
809 extern int md_getdevidminor(set_t setno, side_t side, mdkey_t key,
810 char *minorname, size_t minorname_len);
811 extern int md_update_namespace(set_t setno, side_t side, mdkey_t key,
812 caddr_t devname, caddr_t pathname, major_t major,
813 minor_t mnum);
814 extern int md_update_locator_namespace(set_t setno, side_t side,
815 caddr_t devname, caddr_t pathname, md_dev64_t devt);
816 extern int md_update_namespace_did(set_t setno, side_t side, mdkey_t key,
817 md_error_t *ep);
818 extern int md_validate_devid(set_t setno, side_t side, int *maxsz);
819 extern int md_get_invdid(set_t setno, side_t side, int cnt, int maxsz,
820 void *didptr);
821 extern md_dev64_t md_resolve_bydevid(minor_t, md_dev64_t, mdkey_t key);
822 extern md_dev64_t md_expldev(md_dev64_t);
823 extern dev32_t md_cmpldev(md_dev64_t);
824 extern dev_t md_dev64_to_dev(md_dev64_t);
825 extern md_dev64_t md_makedevice(major_t, minor_t);
826 extern major_t md_getmajor(md_dev64_t);
827 extern minor_t md_getminor(md_dev64_t);
828 extern void md_timeval(md_timeval32_t *);
829 extern int md_imp_snarf_set(mddb_config_t *);
830
831 /* externals from md_mddb.c */
832 extern int mddb_reread_rr(set_t, mddb_recid_t);
833 extern int mddb_setowner(mddb_recid_t id, md_mn_nodeid_t owner);
834 extern int mddb_parse(mddb_parse_parm_t *mpp);
835 extern int mddb_block(mddb_block_parm_t *mpp);
836 extern int mddb_optrecfix(mddb_optrec_parm_t *mop);
837 extern int mddb_check_write_ioctl(mddb_config_t *info);
838 extern int mddb_setflags_ioctl(mddb_setflags_config_t *info);
839 extern struct nm_next_hdr *get_first_record(set_t, int, int);
840 extern void *lookup_entry(struct nm_next_hdr *, set_t,
841 side_t, mdkey_t, md_dev64_t, int);
842 extern void *lookup_shared_entry(struct nm_next_hdr *,
843 mdkey_t key, char *, mddb_recid_t *, int);
844 extern int remove_shared_entry(struct nm_next_hdr *, mdkey_t key,
845 char *, int);
846 extern int remove_entry(struct nm_next_hdr *, side_t, mdkey_t, int);
847 extern void *alloc_entry(struct nm_next_hdr *, mddb_recid_t, size_t, int,
848 mddb_recid_t *);
849 extern void *getshared_name(set_t, mdkey_t, int);
850
851 #endif /* _KERNEL */
852
853
854 /* externals from md_revchk.c */
855 extern int revchk(uint_t my_rev, uint_t data);
856
857
858 #ifdef __cplusplus
859 }
860 #endif
861
862 #endif /* _SYS_MDVAR_H */