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 */ 863