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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_MDVAR_H 28 #define _SYS_MDVAR_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/kmem.h> 34 #include <sys/mkdev.h> 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/t_lock.h> 38 #include <sys/open.h> 39 #include <sys/devops.h> 40 #include <sys/modctl.h> 41 #ifdef DEBUG 42 #include <sys/thread.h> 43 #endif 44 #include <sys/kstat.h> 45 #include <sys/efi_partition.h> 46 #include <sys/byteorder.h> 47 #include <sys/door.h> 48 49 #include <sys/lvm/mdmn_commd.h> 50 #include <sys/lvm/mdio.h> 51 #include <sys/lvm/md_mdiox.h> 52 #include <sys/lvm/md_mddb.h> 53 #include <sys/lvm/md_notify.h> 54 55 #ifdef __cplusplus 56 extern "C" { 57 #endif 58 59 /* 60 * defaults 61 */ 62 #define NMD_DEFAULT 128 /* number of metadevices */ 63 #define MD_NOPS 25 /* number of misc modules */ 64 #define MAXBOOTLIST 64 65 66 /* 67 * Needed for backwards-compatibility with metadevices created under 68 * 2.6 or earlier. Back then, a krwlock_t was twelve bytes. More 69 * recently, it's four bytes. Since these get included in structures 70 * written out to disk, we have to make sure we're using the largest 71 * size. Things will get interesting if krwlock_t ever gets bigger 72 * than twelve bytes. 73 */ 74 75 typedef union _md_krwlock { 76 krwlock_t lock; 77 struct { 78 void *_opaque[3]; 79 } xx; 80 } md_krwlock_t; 81 82 typedef struct { 83 kmutex_t md_io_mx; /* counter mutex */ 84 kcondvar_t md_io_cv; /* ioctl wait on if draining */ 85 long io_cnt; /* number of I/Os */ 86 long io_state; /* !0 if waiting on zero */ 87 } md_set_io_t; 88 89 typedef enum set_iostate { 90 MD_SET_ACTIVE = 1, 91 MD_SET_RELEASE = 2 92 }set_iostate_t; 93 94 /* 95 * for md_dev64_t translation 96 */ 97 struct md_xlate_table { 98 dev32_t mini_devt; 99 dev32_t targ_devt; 100 }; 101 102 extern struct md_xlate_table *md_tuple_table; 103 104 /* 105 * for major number translation 106 */ 107 108 struct md_xlate_major_table { 109 char *drv_name; 110 major_t targ_maj; 111 }; 112 113 extern struct md_xlate_major_table *md_major_tuple_table; 114 115 extern int md_tuple_length; 116 extern uint_t md_majortab_len; 117 extern int md_in_upgrade; 118 119 extern md_mn_nodeid_t md_mn_mynode_id; 120 121 #define MD_UPGRADE (md_in_upgrade == 1) 122 123 /* 124 * Flags used during upgrade: 125 * 126 * md_keep_repl_state flag means that mddb should be kept in the format 127 * that was found on disk (non-device id format vs. device id format). 128 * This is used during the upgrade process when install is probing 129 * for root disks so that the user can choose the one to be upgraded. 130 * 131 * md_devid_destroy flag is used to destroy device ids stored in the 132 * metadevice state database (mddb). 133 * 134 * The md_devid_destroy flag is to be used only in a catastrophic failure 135 * case. An example of this would be if a user upgrades firmware on all 136 * disks where this causes the disks to now have different device id's. 137 * The user would not be able to boot a mirror'd root filesystem since the 138 * system would recognize none of the device id's stored in the mddb. 139 * This flag would destroy all device id information stored in the mddb and 140 * if the md_keep_repl_state flag was not set, the mddb would be reconverted 141 * to device id format on SLVM startup and all of the device id 142 * information would be regenerated. 143 * 144 * If the md_devid_destroy flag is set and the md_keep_repl_state flag is 145 * set, the mddb's would have their device id information destroyed and 146 * would be left in non-devid format since the device id information would 147 * not be regenerated. 148 * 149 * This flag is not documented anywhere and is only to be used as a last 150 * resort as in the described case or if a device driver has a bug where 151 * device id's are found to not be unique. If device id's aren't unique, 152 * the user could run without device id's until a patch is released for 153 * that driver. 154 */ 155 extern int md_keep_repl_state; 156 extern int md_devid_destroy; 157 extern int mdmn_door_did; 158 #ifdef _KERNEL 159 extern door_handle_t mdmn_door_handle; 160 #endif /* _KERNEL */ 161 162 /* 163 * An io_lock mechanism for raid, the MD_UL_XXXX bits are used for 164 * convenience. 165 */ 166 typedef struct md_io_lock { 167 ulong_t io_readercnt; /* number of unit readers */ 168 ulong_t io_wanabecnt; /* # pending on becoming unit writer */ 169 ulong_t io_lock; 170 void *io_list_front; 171 void *io_list_back; 172 kmutex_t io_mx; 173 kcondvar_t io_cv; 174 kmutex_t io_list_mutex; /* list of waiting io */ 175 kthread_id_t io_owner; /* writer thread */ 176 } md_io_lock_t; 177 178 /* 179 * The following flags are in un_flag field of mdc_unit struct. 180 */ 181 #define MD_LABELED 0x1 /* First sector of the metadevice is a label */ 182 #define MD_EFILABEL 0x2 /* This md has an EFI label and no vtoc */ 183 184 /* 185 * This is the number of bytes a DKIOCGETEFI ioctl returns 186 * For now it's one time the header and once the size for a partition info 187 */ 188 #define MD_EFI_LABEL_SIZE (sizeof (efi_gpt_t) + sizeof (efi_gpe_t)) 189 190 /* This is the number of bytes consumed by efi_gpe_PartitionName */ 191 #define MD_EFI_PARTNAME_BYTES (EFI_PART_NAME_LEN * sizeof (ushort_t)) 192 193 typedef enum hs_cmds { 194 HS_GET, HS_FREE, HS_BAD, HSP_INCREF, HSP_DECREF, HS_MKDEV 195 } hs_cmds_t; 196 197 typedef struct md_link { 198 struct md_link *ln_next; 199 set_t ln_setno; 200 uint_t ln_id; 201 } md_link_t; 202 203 typedef struct mdi_unit { 204 md_link_t ui_link; 205 ulong_t ui_readercnt; /* number of unit readers */ 206 ulong_t ui_wanabecnt; /* # pending on becoming unit writer */ 207 ulong_t ui_lock; 208 kmutex_t ui_mx; 209 kcondvar_t ui_cv; 210 int ui_opsindex; 211 uint_t ui_ocnt[OTYPCNT]; /* open counts */ 212 md_io_lock_t *ui_io_lock; /* pointer to io lock */ 213 kstat_t *ui_kstat; /* kernel statistics */ 214 kthread_id_t ui_owner; /* writer thread */ 215 uint_t ui_tstate; /* transient state bits */ 216 uint_t ui_capab; /* Capability bits supported */ 217 } mdi_unit_t; 218 219 /* 220 * Following are used with ui_lock 221 * which is in the unit incore structure. 222 */ 223 #define MD_UL_WRITER 0x0001 /* Stall all new strategy calls */ 224 #define MD_UL_WANABEWRITER 0x0002 225 #define MD_UL_OPENORCLOSE 0x0004 226 227 #define MD_UL_OPEN 0x0008 /* unit is open */ 228 #define MD_UL_EXCL 0x0010 /* unit is open exclusively */ 229 230 /* 231 * The softpart open code may do an I/O to validate the watermarks 232 * and should hold no open locks during this I/O. So, mark the unit 233 * as OPENINPROGRESS and drop the locks. This will keep any other 234 * softpart open's waiting until the validate has completed. 235 */ 236 #define MD_UL_OPENINPROGRESS 0x0020 /* Open in Progress */ 237 238 /* 239 * Following are used with ui_tstate to specify any transient states which 240 * occur during metadevice operation. These are not written to the metadb as 241 * they do not represent a failure of the underlying metadevice. 242 * Transient errors are stored in the lower 16 bits and other transient 243 * state is stored in the upper 16 bits. 244 * MD_NOTOPENABLE should contain all the states that are set prior to an 245 * open (by snarf) and that indicate that a metadevice cannot be opened. 246 */ 247 #define MD_DEV_ERRORED 0x0000ffff /* ui_tstate error bits */ 248 #define MD_EOF_METADEVICE 0x00000001 /* EOF'd metadevice */ 249 #define MD_64MD_ON_32KERNEL 0x00000002 /* 64bit metadev on 32bit kernel */ 250 #define MD_INACCESSIBLE 0x00000004 /* metadevice unavailable */ 251 #define MD_RETRYING 0x00010000 /* retrying errored failfast I/O */ 252 #define MD_OPENLOCKED 0x00020000 /* MN: open locked before removing */ 253 #define MD_ERR_PENDING 0x00040000 /* MN: error pending */ 254 #define MD_ABR_CAP 0x00080000 /* MN: Application Based Recovery */ 255 #define MD_DMR_CAP 0x00100000 /* MN: Directed Mirror Read */ 256 #define MD_RELEASE_IOERR_DONE 0x00200000 /* ioerr console message done */ 257 #define MD_RESYNC_NOT_DONE 0x00400000 /* resync not done yet */ 258 259 /* A metadevice cannot be opened when these states are set */ 260 #define MD_NOTOPENABLE (MD_EOF_METADEVICE|MD_64MD_ON_32KERNEL) 261 262 typedef struct md_ioctl_lock { 263 int l_flags; /* locks held */ 264 mdi_unit_t *l_ui; /* unit for which lock is held */ 265 } md_ioctl_lock_t; 266 267 #define MD_MASTER_DROPPED 0x0001 268 #define MD_READER_HELD 0x0002 269 #define MD_WRITER_HELD 0x0004 270 #define MD_IO_HELD 0x0008 271 #define MD_ARRAY_READER 0x0010 272 #define MD_ARRAY_WRITER 0x0020 273 #define STALE_OK 0x0100 274 #define NO_OLD 0x0200 275 #define NO_LOCK 0x0400 276 #define MD_MT_IOCTL 0x80000 /* MD_GBL_IOCTL_LOCK not set */ 277 #define IOLOCK md_ioctl_lock_t 278 279 #define WR_LOCK MD_WRITER_HELD 280 #define RD_LOCK MD_READER_HELD | STALE_OK 281 #define ARRAY_WRITER MD_ARRAY_WRITER 282 #define ARRAY_READER MD_ARRAY_READER 283 #define WRITERS MD_WRITER_HELD | MD_IO_HELD | MD_ARRAY_WRITER 284 #define READERS RD_LOCK | MD_ARRAY_READER 285 286 #define IOLOCK_RETURN_IOCTLEND(code, lock) \ 287 md_ioctl_lock_exit((code), (lock)->l_flags, (lock)->l_ui, TRUE) 288 289 #define IOLOCK_RETURN(code, lock) \ 290 md_ioctl_lock_exit((code), (lock)->l_flags, (lock)->l_ui, FALSE) 291 292 #define IOLOCK_RETURN_RELEASE(code, lock) \ 293 md_ioctl_releaselocks((code), (lock)->l_flags, (lock)->l_ui) 294 295 #define IOLOCK_RETURN_REACQUIRE(lock) \ 296 md_ioctl_reacquirelocks((lock)->l_flags, (lock)->l_ui) 297 298 #define IOLOCK_INIT(lock) bzero((caddr_t)(lock), sizeof (*(lock))) 299 /* 300 * checks to be sure locks are held 301 */ 302 #define UNIT_WRITER_HELD(un) \ 303 (MDI_UNIT(MD_SID(un))->ui_lock & MD_UL_WRITER) 304 #define UNIT_READER_HELD(un) \ 305 (MDI_UNIT(MD_SID(un))->ui_readercnt != 0) 306 #define IO_WRITER_HELD(un) \ 307 (MDI_UNIT(MD_SID(un))->ui_io_lock->io_lock & MD_UL_WRITER) 308 #define IO_READER_HELD(un) \ 309 (MDI_UNIT(MD_SID(un))->ui_io_lock->io_readercnt != 0) 310 311 #ifdef DEBUG 312 #define STAT_INC(statvar) \ 313 statvar++ 314 #define STAT_DEC(statvar) \ 315 statvar-- 316 #define STAT_ZERO(statvar) \ 317 statvar = 0; 318 #define STAT_MAX(statmax, statvar) \ 319 { \ 320 statvar++; \ 321 if (statvar > statmax) \ 322 statmax = statvar; \ 323 } 324 #define STAT_CHECK(statvar, value) \ 325 { \ 326 if (value) \ 327 statvar++; \ 328 } 329 #else 330 #define STAT_INC(statvar) 331 #define STAT_DEC(statvar) 332 #define STAT_ZERO(statvar) 333 #define STAT_MAX(statmax, statvar) 334 #define STAT_CHECK(statvar, value) 335 #endif 336 /* 337 * bit map related macros 338 */ 339 #define setbit(a, i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY)) 340 #define clrbit(a, i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY))) 341 #define isset(a, i) ((a)[(i)/NBBY] & (1<<((i)%NBBY))) 342 #define isclr(a, i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0) 343 344 typedef struct daemon_queue { 345 int maxq_len; 346 int qlen; 347 int treqs; /* total number of requests */ 348 struct daemon_queue *dq_next; 349 struct daemon_queue *dq_prev; 350 void (*dq_call)(); 351 } daemon_queue_t; 352 353 #define DAEMON_QUEUE daemon_queue_t dq; 354 355 #ifdef _KERNEL 356 #include <sys/buf.h> 357 #include <sys/dkio.h> 358 #include <sys/vtoc.h> 359 360 #define MD_DEV2SET(d) (MD_MIN2SET(md_getminor(d))) 361 362 #define MD_UNIT(m) (md_set[MD_MIN2SET(m)].s_un[MD_MIN2UNIT(m)]) 363 #define MDI_UNIT(m) ((mdi_unit_t *) \ 364 md_set[MD_MIN2SET(m)].s_ui[MD_MIN2UNIT(m)]) 365 #define MD_VOIDUNIT(m) (md_set[MD_MIN2SET(m)].s_un[MD_MIN2UNIT(m)]) 366 #define MDI_VOIDUNIT(m) (md_set[MD_MIN2SET(m)].s_ui[MD_MIN2UNIT(m)]) 367 368 /* 369 * This is the current maximum number of real disks per Virtual Disk. 370 */ 371 extern uint_t md_mdelay; /* md_mirror timeout delay */ 372 373 #define MD_ADM_MINOR L_MAXMIN32 /* the minor number for md_admin */ 374 #define MD_MDELAY (md_mdelay) 375 #define NUM_USEC_IN_SEC 1000000 /* 1 million usec in a second */ 376 377 #define ANY_SERVICE -1 /* md_get_named_service() wild card */ 378 379 /* 380 * daemon threads are used in multiple places in md. The following set of 381 * structures and routines allow a common way to create and initialize them. 382 * 383 * md_requestq_entry_t - entry of creating request queues. 384 * struct mdq_anchor - request queue header 385 * 386 * Functions associated with request queues: 387 * 388 * int init_requestq_entry - 389 * void daemon_request - put a request on the queue. 390 */ 391 392 typedef struct md_requestq_entry { 393 struct mdq_anchor *dispq_headp; 394 int *num_threadsp; /* threads servicing the queue */ 395 } md_requestq_entry_t; 396 397 #define NULL_REQUESTQ_ENTRY(rqp)\ 398 ((rqp)->dispq_headp == NULL || (rqp)->num_threadsp == NULL) 399 400 /* this typedef is used to differentiate between the two call styles */ 401 typedef enum callstyle { 402 REQ_OLD, 403 REQ_NEW 404 } callstyle_t; 405 406 407 #define daemon_request_new daemon_request 408 409 typedef struct mdq_anchor { 410 DAEMON_QUEUE 411 kcondvar_t a_cv; /* Request has been put on queue */ 412 kmutex_t a_mx; 413 } mdq_anchor_t; 414 415 typedef struct daemon_request { 416 DAEMON_QUEUE 417 kmutex_t dr_mx; 418 int dr_pending; 419 timeout_id_t dr_timeout_id; 420 } daemon_request_t; 421 422 typedef struct sv_dev { 423 set_t setno; 424 side_t side; 425 mdkey_t key; 426 } sv_dev_t; 427 428 /* 429 * Types of device probes 430 */ 431 432 433 typedef struct probe_req { 434 DAEMON_QUEUE 435 minor_t mnum; /* mnum of the metadevice to probe */ 436 void *private_handle; /* private handle */ 437 intptr_t (*probe_fcn)(); /* type of probeing to be done */ 438 } probe_req_t; 439 440 /* Global flags */ 441 #define MD_NO_GBL_LOCKS_HELD 0x0000 /* currently holding no global locks */ 442 #define MD_GBL_DAEMONS_LIVE 0x0001 /* master daemon has been started. */ 443 #define MD_GBL_DAEMONS_DIE 0x0002 444 #define MD_GBL_HALTED 0x0004 /* driver is shut down */ 445 446 /* Available bit was GBL_STALE 0x0008 */ 447 448 #define MD_GBL_IOCTL_LOCK 0x0010 /* single-threads ioctls */ 449 #define MD_GBL_HS_LOCK 0x0020 /* single-threads hotspares */ 450 #define MD_GBL_OPEN 0x0040 /* admin is open */ 451 #define MD_GBL_EXCL 0x0080 /* admin is open exclusively */ 452 453 #define MD_OFLG_NULL 0x0000 /* Null flag */ 454 #define MD_OFLG_CONT_ERRS 0x0001 /* Continue on open errors */ 455 #define MD_OFLG_PROBEDEV 0x0002 /* force a simulated open */ 456 #define MD_OFLG_ISINIT 0x0004 /* raid initialization */ 457 #define MD_OFLG_FROMIOCTL 0x0008 /* Called from an ioctl handler */ 458 459 460 typedef struct md_named_services { 461 462 intptr_t (*md_service)(); 463 char *md_name; 464 } md_named_services_t; 465 466 typedef enum md_snarfcmd {MD_SNARF_CLEANUP, MD_SNARF_DOIT} md_snarfcmd_t; 467 468 typedef struct md_ops { 469 int (*md_open)( 470 dev_t *devp, 471 int flag, 472 int otyp, 473 cred_t *credp, 474 int md_oflags); 475 int (*md_close)( 476 dev_t dev, 477 int flag, 478 int otyp, 479 cred_t *credp, 480 int md_oflags); 481 void (*md_strategy)( 482 buf_t *bufp, 483 int flag, 484 void *private); 485 int (*md_print)(); /* unused now */ 486 int (*md_dump)( 487 dev_t dev, 488 caddr_t addr, 489 daddr_t blkno, 490 int nblk); 491 int (*md_read)( 492 dev_t dev, 493 struct uio *uiop, 494 cred_t *credp); 495 int (*md_write)( 496 dev_t dev, 497 struct uio *uiop, 498 cred_t *credp); 499 int (*md_ioctl)( 500 dev_t dev, 501 int cmd, 502 void *data, 503 int mode, 504 IOLOCK *lockp); 505 int (*md_snarf)( 506 md_snarfcmd_t cmd, 507 set_t setno); 508 int (*md_halt)(); 509 int (*md_aread)( 510 dev_t dev, 511 struct aio_req *aiop, 512 cred_t *credp); 513 int (*md_awrite)( 514 dev_t dev, 515 struct aio_req *aiop, 516 cred_t *credp); 517 int (*md_imp_set)( 518 set_t setno); 519 md_named_services_t *md_services; 520 md_krwlock_t md_link_rw; 521 md_link_t *md_head; 522 /* 523 * NOTE: when TSlvm s10/onnv compatibility is not an issue: 524 * o md_modid and md_locked should be deleted. 525 * o md_mod should be added 526 * ddi_modhandle_t md_mod; 527 * and used instead of the md_mods array (md_mods should 528 * be deleted). 529 */ 530 int md_modid; 531 int md_locked; 532 int md_selfindex; 533 struct md_ops *md_next; 534 md_driver_t md_driver; 535 /* NOTE: TSlvm depends on offsets in and sizeof this structure */ 536 } md_ops_t; 537 538 /* macro to generate linkage for a md misc plugin module */ 539 #define md_noop 540 #define MD_PLUGIN_MISC_MODULE(desc, init_init, fini_uninit) \ 541 static struct modlmisc modlmisc = { \ 542 &mod_miscops, "Solaris Volume Manager " desc \ 543 }; \ 544 static struct modlinkage modlinkage = { \ 545 MODREV_1, (void *)&modlmisc, NULL \ 546 }; \ 547 int \ 548 _init(void) \ 549 { \ 550 int i; \ 551 init_init; \ 552 if ((i = mod_install(&modlinkage)) != 0) { \ 553 fini_uninit; \ 554 } \ 555 return (i); \ 556 } \ 557 int \ 558 _fini() \ 559 { \ 560 int i; \ 561 if ((i = mod_remove(&modlinkage)) == 0) { \ 562 fini_uninit; \ 563 } \ 564 return (i); \ 565 } \ 566 int \ 567 _info(struct modinfo *modinfop) \ 568 { \ 569 return (mod_info(&modlinkage, modinfop)); \ 570 } 571 572 typedef enum md_haltcmd {MD_HALT_ALL, MD_HALT_CHECK, MD_HALT_DOIT, 573 MD_HALT_CLOSE, MD_HALT_OPEN, MD_HALT_UNLOAD 574 } md_haltcmd_t; 575 576 /* 577 * To support cpr (Energy Star) we need to know when the resync threads are 578 * running to not allow suspention. 579 */ 580 typedef struct md_resync_thds_cnt { 581 int md_raid_resync; /* count of active raid resync threads */ 582 int md_mirror_resync; /* count of active mirror resync threads */ 583 kmutex_t md_resync_mutex; /* protects both resync counts */ 584 } md_resync_t; 585 586 /* 587 * flags used with call to individual strategy routines 588 */ 589 #define MD_STR_PASSEDON 0x0000ffff 590 #define MD_STR_NOTTOP 0x00000001 591 #define MD_STR_MAPPED 0x00000002 /* set when buf_t is mapped in */ 592 #define MD_STR_ABR 0x00000004 /* use ABR to handle any recovery */ 593 #define MD_STR_WMUPDATE 0x00000008 /* set if updating watermarks for sp */ 594 #define MD_IO_COUNTED 0x00000400 /* io has been counted */ 595 #define MD_NOBLOCK 0x00000800 /* do not block io durring release */ 596 597 #define MD_STR_WAR 0x00010000 /* this write is write after read */ 598 #define MD_STR_WOW 0x00020000 /* handling a write-on-write */ 599 #define MD_STR_DMR 0x00040000 /* Directed Read request */ 600 #define MD_STR_DIRTY_RD 0x00080000 /* Read of a dirty block */ 601 #define MD_STR_FLAG_ERR 0x00100000 /* Flag any write error on this i/o */ 602 603 /* 604 * Bits for return value of md_getdevnum 605 */ 606 #define MD_TRUST_DEVT 1 607 #define MD_NOTRUST_DEVT 0 608 609 /* Flag for drivers to pass to kmem_cache_alloc() */ 610 #define MD_ALLOCFLAGS (KM_PUSHPAGE | KM_SLEEP) 611 612 /* Named services */ 613 #define MD_CHECK_OFFLINE "check_offline" 614 #define MD_INC_ABR_COUNT "inc abr count" 615 #define MD_DEC_ABR_COUNT "dec abr count" 616 617 /* Externals from md.c */ 618 extern int md_snarf_db_set(set_t setno, md_error_t *ep); 619 extern void get_info(struct dk_cinfo *, minor_t); 620 extern void get_minfo(struct dk_minfo *, minor_t); 621 extern int mdstrategy(buf_t *); 622 extern int md_create_minor_node(set_t, minor_t); 623 624 625 /* External from md_subr.c */ 626 extern int md_inc_iocount(set_t); 627 extern void md_inc_iocount_noblock(set_t); 628 extern void md_dec_iocount(set_t); 629 extern int md_isblock_setio(set_t); 630 extern int md_block_setio(set_t); 631 extern void md_clearblock_setio(set_t); 632 extern void md_unblock_setio(set_t); 633 extern int md_tas_block_setio(set_t); 634 extern void md_biodone(struct buf *); 635 extern void md_bioreset(struct buf *); 636 extern md_dev64_t md_xlate_targ_2_mini(md_dev64_t); 637 extern md_dev64_t md_xlate_mini_2_targ(md_dev64_t); 638 extern void md_xlate_free(int); 639 extern major_t md_targ_name_to_major(char *); 640 extern char *md_targ_major_to_name(major_t); 641 extern void md_majortab_free(); 642 extern void md_set_status(int); 643 extern void md_clr_status(int); 644 extern int md_get_status(void); 645 extern void md_set_setstatus(set_t, int); 646 extern void md_clr_setstatus(set_t, int); 647 extern uint_t md_get_setstatus(set_t); 648 extern void *md_unit_readerlock(mdi_unit_t *); 649 extern void *md_unit_writerlock(mdi_unit_t *); 650 extern void md_unit_readerexit(mdi_unit_t *); 651 extern void md_unit_writerexit(mdi_unit_t *); 652 extern void md_ioctl_releaselocks(int, int, mdi_unit_t *); 653 extern void md_ioctl_reacquirelocks(int, mdi_unit_t *); 654 extern int md_ioctl_lock_exit(int, int, mdi_unit_t *, int); 655 extern int md_ioctl_lock_enter(void); 656 extern void *md_ioctl_readerlock(IOLOCK *, mdi_unit_t *); 657 extern void md_ioctl_readerexit(IOLOCK *); 658 extern void *md_ioctl_writerlock(IOLOCK *, mdi_unit_t *); 659 extern void md_ioctl_writerexit(IOLOCK *); 660 extern void md_ioctl_io_exit(IOLOCK *); 661 extern void *md_ioctl_io_lock(IOLOCK *, mdi_unit_t *); 662 extern void md_ioctl_droplocks(IOLOCK *); 663 extern void md_array_writer(IOLOCK *); 664 extern void md_array_reader(IOLOCK *); 665 extern void *md_ioctl_openclose_enter(IOLOCK *, mdi_unit_t *); 666 extern void md_ioctl_openclose_exit(IOLOCK *); 667 extern void md_ioctl_openclose_exit_lh(IOLOCK *); 668 extern void *md_unit_openclose_enter(mdi_unit_t *); 669 extern void md_unit_openclose_exit(mdi_unit_t *); 670 extern void md_unit_openclose_exit_lh(mdi_unit_t *); 671 extern int md_unit_isopen(mdi_unit_t *ui); 672 extern int md_unit_incopen(minor_t mnum, int flag, int otyp); 673 extern int md_unit_decopen(minor_t mnum, int otyp); 674 extern void *md_io_readerlock(mdi_unit_t *); 675 extern void *md_io_writerlock(mdi_unit_t *); 676 extern void md_io_readerexit(mdi_unit_t *); 677 extern void md_io_writerexit(mdi_unit_t *); 678 extern intptr_t (*md_get_named_service())(); 679 extern int init_requestq(md_requestq_entry_t *, void (*)(), 680 caddr_t, int, int); 681 extern void daemon_request(mdq_anchor_t *, void(*)(), 682 daemon_queue_t *, callstyle_t); 683 extern void md_daemon(int, mdq_anchor_t *); 684 extern void mddb_commitrec_wrapper(mddb_recid_t); 685 extern void mddb_commitrecs_wrapper(mddb_recid_t *); 686 extern void mddb_deleterec_wrapper(mddb_recid_t); 687 extern void md_holdset_enter(set_t setno); 688 extern void md_holdset_exit(set_t setno); 689 extern int md_holdset_testandenter(set_t setno); 690 extern void md_haltsnarf_enter(set_t setno); 691 extern void md_haltsnarf_exit(set_t setno); 692 extern void md_haltsnarf_wait(set_t setno); 693 extern int md_halt_set(set_t setno, enum md_haltcmd cmd); 694 extern int md_halt(int global_lock_flag); 695 extern int md_layered_open(minor_t, md_dev64_t *, int); 696 extern void md_layered_close(md_dev64_t, int); 697 extern char *md_get_device_name(md_dev64_t); 698 extern int errdone(mdi_unit_t *, struct buf *, int); 699 extern int md_checkbuf(mdi_unit_t *, md_unit_t *, buf_t *); 700 extern int md_start_daemons(int init_queues); 701 extern int md_loadsubmod(set_t, char *, int); 702 extern int md_getmodindex(md_driver_t *, int, int); 703 extern void md_call_strategy(buf_t *, int, void *); 704 extern int md_call_ioctl(md_dev64_t, int, void *, int, IOLOCK *); 705 extern void md_rem_link(set_t, int, krwlock_t *, md_link_t **); 706 extern int md_dev_exists(md_dev64_t); 707 extern md_parent_t md_get_parent(md_dev64_t); 708 extern void md_set_parent(md_dev64_t, md_parent_t); 709 extern void md_reset_parent(md_dev64_t); 710 extern int md_hot_spare_ifc(hs_cmds_t, mddb_recid_t, u_longlong_t, int, 711 mddb_recid_t *, mdkey_t *, md_dev64_t *, diskaddr_t *); 712 extern int md_notify_interface(md_event_cmds_t cmd, md_tags_t type, 713 set_t set, md_dev64_t dev, md_event_type_t event); 714 extern void svm_gen_sysevent(char *se_class, char *se_subclass, 715 uint32_t tag, set_t setno, md_dev64_t devid); 716 extern void md_create_unit_incore(minor_t, md_ops_t *, int); 717 extern void md_destroy_unit_incore(minor_t, md_ops_t *); 718 extern void md_rem_names(sv_dev_t *, int); 719 struct uio; 720 extern int md_chk_uio(struct uio *); 721 extern char *md_shortname(minor_t mnum); 722 extern char *md_devname(set_t setno, md_dev64_t dev, char *buf, 723 size_t size); 724 extern void md_minphys(buf_t *); 725 extern void md_kstat_init(minor_t mnum); 726 extern void md_kstat_init_ui(minor_t mnum, mdi_unit_t *ui); 727 extern void md_kstat_destroy(minor_t mnum); 728 extern void md_kstat_destroy_ui(mdi_unit_t *ui); 729 extern void md_kstat_waitq_enter(mdi_unit_t *ui); 730 extern void md_kstat_waitq_to_runq(mdi_unit_t *ui); 731 extern void md_kstat_waitq_exit(mdi_unit_t *ui); 732 extern void md_kstat_runq_enter(mdi_unit_t *ui); 733 extern void md_kstat_runq_exit(mdi_unit_t *ui); 734 extern void md_kstat_done(mdi_unit_t *ui, buf_t *bp, int war); 735 extern pid_t md_getpid(void); 736 extern proc_t *md_getproc(void); 737 extern int md_checkpid(pid_t pid, proc_t *proc); 738 extern char *md_strdup(char *cp); 739 extern void freestr(char *cp); 740 extern int md_check_ioctl_against_efi(int, ushort_t); 741 extern mddb_recid_t md_vtoc_to_efi_record(mddb_recid_t, set_t); 742 743 extern int mdmn_ksend_message(set_t, md_mn_msgtype_t, uint_t, char *, int, 744 md_mn_kresult_t *); 745 extern void mdmn_ksend_show_error(int, md_mn_kresult_t *, const char *); 746 extern int mdmn_send_capability_message(minor_t, volcap_t, IOLOCK *); 747 extern void mdmn_clear_all_capabilities(minor_t); 748 extern int md_init_probereq(struct md_probedev_impl *p, 749 daemon_queue_t **hdrpp); 750 extern boolean_t callb_md_mrs_cpr(void *, int); 751 752 /* Externals from md_ioctl.c */ 753 extern int md_mn_is_commd_present(void); 754 extern void md_mn_clear_commd_present(void); 755 extern int md_admin_ioctl(md_dev64_t, int, caddr_t, int, IOLOCK *lockp); 756 extern void md_get_geom(md_unit_t *, struct dk_geom *); 757 extern void md_get_vtoc(md_unit_t *, struct vtoc *); 758 extern int md_set_vtoc(md_unit_t *, struct vtoc *); 759 extern void md_get_cgapart(md_unit_t *, struct dk_map *); 760 extern void md_get_efi(md_unit_t *, char *); 761 extern int md_set_efi(md_unit_t *, char *); 762 extern int md_dkiocgetefi(minor_t, void *, int); 763 extern int md_dkiocsetefi(minor_t, void *, int); 764 extern int md_dkiocpartition(minor_t, void *, int); 765 766 767 /* Externals from md_names.c */ 768 extern mdkey_t md_setdevname(set_t, side_t, mdkey_t, char *, minor_t, char *, 769 set_t); 770 extern int md_getdevname(set_t, side_t, mdkey_t, md_dev64_t, char *, 771 size_t); 772 extern int md_getkeyfromdev(set_t, side_t, md_dev64_t, mdkey_t *, int *); 773 extern int md_devid_found(set_t, side_t, mdkey_t); 774 extern int md_getnment(set_t, side_t, mdkey_t, md_dev64_t, 775 char *, uint_t, major_t *, minor_t *, mdkey_t *); 776 extern md_dev64_t md_getdevnum(set_t, side_t, mdkey_t, int); 777 extern mdkey_t md_getnextkey(set_t, side_t, mdkey_t, uint_t *); 778 extern int md_remdevname(set_t, side_t, mdkey_t); 779 extern mdkey_t md_setshared_name(set_t, char *, int); 780 extern char *md_getshared_name(set_t, mdkey_t); 781 extern int md_remshared_name(set_t, mdkey_t); 782 extern mdkey_t md_getshared_key(set_t, char *); 783 extern int md_setshared_data(set_t, uint_t, caddr_t); 784 extern caddr_t md_getshared_data(set_t, uint_t); 785 extern int md_load_namespace(set_t, md_error_t *ep, int); 786 extern void md_unload_namespace(set_t, int); 787 extern int md_nm_did_chkspace(set_t); 788 extern void md_bioinit(); 789 extern buf_t *md_bioclone(buf_t *, off_t, size_t, dev_t, diskaddr_t, 790 int (*)(buf_t *), buf_t *, int); 791 extern int md_getdevid(set_t setno, side_t side, mdkey_t key, 792 ddi_devid_t devid, ushort_t *did_size); 793 extern int md_getdevidminor(set_t setno, side_t side, mdkey_t key, 794 char *minorname, size_t minorname_len); 795 extern int md_update_namespace(set_t setno, side_t side, mdkey_t key, 796 caddr_t devname, caddr_t pathname, minor_t mnum); 797 extern int md_update_locator_namespace(set_t setno, side_t side, 798 caddr_t devname, caddr_t pathname, md_dev64_t devt); 799 extern int md_update_namespace_did(set_t setno, side_t side, mdkey_t key, 800 md_error_t *ep); 801 extern int md_validate_devid(set_t setno, side_t side, int *maxsz); 802 extern int md_get_invdid(set_t setno, side_t side, int cnt, int maxsz, 803 void *didptr); 804 extern md_dev64_t md_resolve_bydevid(minor_t, md_dev64_t, mdkey_t key); 805 extern md_dev64_t md_expldev(md_dev64_t); 806 extern dev32_t md_cmpldev(md_dev64_t); 807 extern dev_t md_dev64_to_dev(md_dev64_t); 808 extern md_dev64_t md_makedevice(major_t, minor_t); 809 extern major_t md_getmajor(md_dev64_t); 810 extern minor_t md_getminor(md_dev64_t); 811 extern void md_timeval(md_timeval32_t *); 812 extern int md_imp_snarf_set(set_t *, int); 813 814 /* externals from md_mddb.c */ 815 extern int mddb_reread_rr(set_t, mddb_recid_t); 816 extern int mddb_setowner(mddb_recid_t id, md_mn_nodeid_t owner); 817 extern int mddb_parse(mddb_parse_parm_t *mpp); 818 extern int mddb_block(mddb_block_parm_t *mpp); 819 extern int mddb_optrecfix(mddb_optrec_parm_t *mop); 820 extern int mddb_check_write_ioctl(mddb_config_t *info); 821 extern int mddb_setflags_ioctl(mddb_setflags_config_t *info); 822 extern struct nm_next_hdr *get_first_record(set_t, int, int); 823 extern void *lookup_entry(struct nm_next_hdr *, set_t, 824 side_t, mdkey_t, md_dev64_t, int); 825 extern void *lookup_shared_entry(struct nm_next_hdr *, 826 mdkey_t key, char *, mddb_recid_t *, int); 827 extern int remove_shared_entry(struct nm_next_hdr *, mdkey_t key, 828 char *, int); 829 extern void *alloc_entry(struct nm_next_hdr *, mddb_recid_t, size_t, int, 830 mddb_recid_t *); 831 extern void *getshared_name(set_t, mdkey_t, int); 832 833 #endif /* _KERNEL */ 834 835 836 /* externals from md_revchk.c */ 837 extern int revchk(uint_t my_rev, uint_t data); 838 839 840 #ifdef __cplusplus 841 } 842 #endif 843 844 #endif /* _SYS_MDVAR_H */ 845