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 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _DSW_DEV_H 27 #define _DSW_DEV_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* 34 * Definitions for kstats 35 */ 36 #define DSW_SKSTAT_SIZE "size" 37 #define DSW_SKSTAT_MTIME "latest modified time" 38 #define DSW_SKSTAT_FLAGS "flags" 39 #define DSW_SKSTAT_THROTTLE_UNIT "ii_throttle_unit" 40 #define DSW_SKSTAT_THROTTLE_DELAY "ii_throttle_delay" 41 #define DSW_SKSTAT_SHDCHKS "shdchks" 42 #define DSW_SKSTAT_SHDCHKUSED "shdchkused" 43 #define DSW_SKSTAT_SHDBITS "shdbits" 44 #define DSW_SKSTAT_COPYBITS "copybits" 45 #define DSW_SKSTAT_MSTA "mst-a" 46 #define DSW_SKSTAT_MSTB "mst-b" 47 #define DSW_SKSTAT_MSTC "mst-c" 48 #define DSW_SKSTAT_MSTD "mst-d" 49 #define DSW_SKSTAT_SETA "set-a" 50 #define DSW_SKSTAT_SETB "set-b" 51 #define DSW_SKSTAT_SETC "set-c" 52 #define DSW_SKSTAT_SETD "set-d" 53 #define DSW_SKSTAT_BMPA "bmp-a" 54 #define DSW_SKSTAT_BMPB "bmp-b" 55 #define DSW_SKSTAT_BMPC "bmp-c" 56 #define DSW_SKSTAT_BMPD "bmp-d" 57 #define DSW_SKSTAT_OVRA "ovr-a" 58 #define DSW_SKSTAT_OVRB "ovr-b" 59 #define DSW_SKSTAT_OVRC "ovr-c" 60 #define DSW_SKSTAT_OVRD "ovr-d" 61 #define DSW_SKSTAT_MSTIO "mst-io" 62 #define DSW_SKSTAT_SHDIO "shd-io" 63 #define DSW_SKSTAT_BMPIO "bmp-io" 64 #define DSW_SKSTAT_OVRIO "ovr-io" 65 66 /* 67 * Bitmap macros 68 */ 69 70 #define DSW_BIT_CLR(bmap, bit) (bmap &= (char)~(1 << bit)) 71 #define DSW_BIT_SET(bmap, bit) (bmap |= (char)(1 << bit)) 72 #define DSW_BIT_ISSET(bmap, bit) ((bmap & (1 << bit)) != 0) 73 74 #define DSW_CBLK_FBA 16 /* cache blocks in fba's */ 75 #define DSW_SHD_BM_OFFSET DSW_CBLK_FBA /* offset to allow for header */ 76 #define DSW_COPY_BM_OFFSET (DSW_SHD_BM_OFFSET + \ 77 DSW_BM_FBA_LEN(ip->bi_size)) 78 #define DSW_BM_FBA_LEN(mst_size) ((mst_size) / FBA_SIZE(DSW_SIZE*DSW_BITS) + \ 79 DSW_CBLK_FBA) 80 81 #define DSW_BM_SIZE_CHUNKS(ip) ((ip->bi_size + DSW_SIZE - 1) / DSW_SIZE) 82 #define DSW_BM_SIZE_BYTES(ip) ((DSW_BM_SIZE_CHUNKS(ip) + DSW_BITS - 1) / \ 83 DSW_BITS) 84 85 #define DSW_CHK2FBA(chunk) (((nsc_off_t)(chunk)) * DSW_SIZE) 86 87 #if defined(_KERNEL) || defined(_KMEMUSER) 88 89 /* 90 * Shadow types. 91 */ 92 93 #define DSW_GOLDEN_TYPE 0x1000 94 #define DSW_QUICK_TYPE 0x2000 95 96 /* 97 * Miscellaneous defines 98 */ 99 100 #define II_INTERNAL 0x1 101 #define II_EXTERNAL 0x2 102 103 #define II_EXISTING 0x01 /* Internal dsw_ioctl()/dsw_config() flags */ 104 #define II_IMPORT 0x02 105 106 /* 107 * defines for _ii_nsc_io and _ii_write, used by kstats 108 */ 109 110 #define KS_NA 0 111 #define KS_MST 1 112 #define KS_SHD 2 113 #define KS_BMP 3 114 #define KS_OVR 4 115 116 /* 117 * global kstats 118 */ 119 120 typedef struct _iigkstat_s { 121 /* static */ 122 kstat_named_t ii_debug; 123 kstat_named_t ii_bitmap; 124 kstat_named_t ii_throttle_unit; 125 kstat_named_t ii_throttle_delay; 126 kstat_named_t ii_copy_direct; 127 128 /* dynamic */ 129 kstat_named_t num_sets; 130 kstat_named_t assoc_over; 131 kstat_named_t spilled_over; 132 } iigkstat_t; 133 134 extern iigkstat_t iigkstat; 135 136 /* 137 * set-specific kstats 138 */ 139 typedef struct _ii_kstat_set_s { 140 kstat_named_t size; /* from _ii_stat() */ 141 kstat_named_t mtime; /* from _ii_stat() */ 142 kstat_named_t flags; /* from _ii_stat() */ 143 kstat_named_t unit; /* ii_throttle_unit */ 144 kstat_named_t delay; /* ii_throttle_delay */ 145 kstat_named_t shdchks; /* from _ii_stat() */ 146 kstat_named_t shdchkused; /* from _ii_stat() */ 147 kstat_named_t shdbits; /* # bits set shadow bitmap */ 148 kstat_named_t copybits; /* # bits set copy bitmap */ 149 kstat_named_t mst_a; /* name */ 150 kstat_named_t mst_b; /* .. of */ 151 kstat_named_t mst_c; /* .. master */ 152 kstat_named_t mst_d; /* .. volume */ 153 kstat_named_t set_a; /* name */ 154 kstat_named_t set_b; /* .. of */ 155 kstat_named_t set_c; /* .. the */ 156 kstat_named_t set_d; /* .. set */ 157 kstat_named_t bmp_a; /* name */ 158 kstat_named_t bmp_b; /* .. of */ 159 kstat_named_t bmp_c; /* .. bitmap */ 160 kstat_named_t bmp_d; /* .. volume */ 161 kstat_named_t ovr_a; /* name */ 162 kstat_named_t ovr_b; /* .. of */ 163 kstat_named_t ovr_c; /* .. overflow */ 164 kstat_named_t ovr_d; /* .. volume */ 165 kstat_named_t mst_io; /* kstat_io of master */ 166 kstat_named_t shd_io; /* kstat_io of shadow */ 167 kstat_named_t bmp_io; /* kstat_io of bitmap */ 168 kstat_named_t ovr_io; /* kstat_io of overflow */ 169 } ii_kstat_set_t; 170 171 extern ii_kstat_set_t ii_kstat_set; 172 #define IOSTAT_NAME_LEN 10 173 174 /* Basic types */ 175 #ifdef II_MULTIMULTI_TERABYTE 176 typedef int64_t chunkid_t; 177 typedef int32_t chunkid32_t; 178 #else 179 typedef int32_t chunkid_t; 180 #endif 181 182 /* 183 * OV_HEADER_VERSION 184 * 0 = original OV header version 185 * 1 = flags support 186 */ 187 #define OV_HEADER_VERSION 1 188 189 /* Overflow disk volume header */ 190 typedef struct _ii_doverflow_s { 191 char ii_dvolname[DSW_NAMELEN]; /* this volumes name */ 192 uint32_t ii_dhmagic; /* sanity check */ 193 uint32_t ii_dhversion; /* volume format */ 194 int32_t ii_ddrefcnt; /* total number of users */ 195 int32_t ii_dflags; /* status flags */ 196 int64_t ii_dfreehead; /* chain of freed chunks */ 197 int64_t ii_dnchunks; /* total number of chunks */ 198 int64_t ii_dunused; /* number of chunks available */ 199 int64_t ii_dused; /* number of chunks allocated */ 200 int32_t ii_urefcnt; /* # shadows needing update */ 201 int32_t ii_dcrefcnt; /* current number of users */ 202 } _ii_doverflow_t; 203 204 /* Overflow volume in core structure */ 205 typedef struct _ii_overflow_s { 206 _ii_doverflow_t ii_do; 207 kmutex_t ii_mutex; /* Mutex */ 208 kmutex_t ii_kstat_mutex; /* Mutex for overflow kstat */ 209 int ii_detachcnt; /* users detaching on disable */ 210 struct _ii_overflow_s *ii_next; /* chain of incore structs */ 211 struct _ii_info_dev_s *ii_dev; /* pointer to device details */ 212 kstat_t *ii_overflow; /* kstats data for this vol */ 213 char ii_ioname[KSTAT_DATA_CHAR_LEN]; /* name for iostat -x */ 214 } _ii_overflow_t; 215 216 #define ii_volname ii_do.ii_dvolname 217 #define ii_hmagic ii_do.ii_dhmagic 218 #define ii_drefcnt ii_do.ii_ddrefcnt 219 #define ii_freehead ii_do.ii_dfreehead 220 #define ii_nchunks ii_do.ii_dnchunks 221 #define ii_unused ii_do.ii_dunused 222 #define ii_used ii_do.ii_dused 223 #define ii_hversion ii_do.ii_dhversion 224 #define ii_flags ii_do.ii_dflags 225 #define ii_urefcnt ii_do.ii_urefcnt 226 #define ii_crefcnt ii_do.ii_dcrefcnt 227 228 #define II_OHEADER_FBA 0 /* overflow header location */ 229 /* 230 * logging of kstat_io 231 */ 232 #ifdef DISABLE_KSTATS 233 #define II_READ_START(ip, type) 234 #define II_READ_END(ip, type, rc, blocks) 235 #define II_WRITE_START(ip, type) 236 #define II_WRITE_END(ip, type, rc, blocks) 237 #else 238 239 #define II_KS(ip, x) KSTAT_IO_PTR(ip->bi_kstat_io.x) 240 #define II_MUTEX(ip, x) ip->bi_kstat_io.x->ks_lock 241 #define II_BLKSIZE 512 242 243 #define II_READ_START(ip, type) \ 244 if (ip->bi_kstat_io.type) { \ 245 mutex_enter(II_MUTEX(ip, type)); \ 246 kstat_runq_enter(II_KS(ip, type)); \ 247 mutex_exit(II_MUTEX(ip, type)); \ 248 } 249 #define II_READ_END(ip, type, rc, blocks) \ 250 if (ip->bi_kstat_io.type) { \ 251 mutex_enter(II_MUTEX(ip, type)); \ 252 if (II_SUCCESS(rc)) { \ 253 II_KS(ip, type)->reads++; \ 254 II_KS(ip, type)->nread += II_BLKSIZE * (blocks);\ 255 } \ 256 kstat_runq_exit(II_KS(ip, type)); \ 257 mutex_exit(II_MUTEX(ip, type)); \ 258 } 259 260 #define II_WRITE_START(ip, type) \ 261 if (ip->bi_kstat_io.type) { \ 262 mutex_enter(II_MUTEX(ip, type)); \ 263 kstat_runq_enter(II_KS(ip, type)); \ 264 mutex_exit(II_MUTEX(ip, type)); \ 265 } 266 #define II_WRITE_END(ip, type, rc, blocks) \ 267 if (ip->bi_kstat_io.type) { \ 268 mutex_enter(II_MUTEX(ip, type)); \ 269 if (II_SUCCESS(rc)) { \ 270 II_KS(ip, type)->writes++; \ 271 II_KS(ip, type)->nwritten += II_BLKSIZE * (blocks);\ 272 } \ 273 kstat_runq_exit(II_KS(ip, type)); \ 274 mutex_exit(II_MUTEX(ip, type)); \ 275 } 276 #endif 277 278 #define II_NSC_READ(ip, type, rc, buf, pos, len, flag) \ 279 II_READ_START(ip, type); \ 280 rc = nsc_read(buf, pos, len, flag); \ 281 II_READ_END(ip, type, rc, len); 282 283 #define II_NSC_WRITE(ip, type, rc, buf, pos, len, flag) \ 284 II_WRITE_START(ip, type); \ 285 rc = nsc_write(buf, pos, len, flag); \ 286 II_WRITE_END(ip, type, rc, len); 287 288 #define II_NSC_COPY_DIRECT(ip, t1, t2, rc, buf1, buf2, pos1, pos2, len) \ 289 II_WRITE_START(ip, t2); \ 290 rc = nsc_copy_direct(buf1, buf2, pos1, pos2, len); \ 291 II_WRITE_END(ip, t2, rc, len); 292 293 #define II_ALLOC_BUF(ip, type, rc, fd, pos, len, flag, tmp) \ 294 if (flag & NSC_READ) { \ 295 II_READ_START(ip, type); \ 296 } \ 297 rc = nsc_alloc_buf(fd, pos, len, flag, tmp); \ 298 if (flag & NSC_READ) { \ 299 II_READ_END(ip, type, rc, len); \ 300 } 301 302 /* 303 * All kstat_io associated with a set. NOTE: only one mutex for all 304 * of the kstats for a given set; all master/shadow/bmp/overflow mutexes 305 * point back to the statmutex 306 */ 307 308 typedef struct _ii_kstat_info_s { 309 kstat_t *master; 310 kstat_t *shadow; 311 kstat_t *bitmap; 312 kstat_t *overflow; 313 kmutex_t statmutex; 314 char mstio[KSTAT_DATA_CHAR_LEN]; /* name of mst in iostat -x */ 315 char shdio[KSTAT_DATA_CHAR_LEN]; /* name of shd in iostat -x */ 316 char bmpio[KSTAT_DATA_CHAR_LEN]; /* name of bmp in iostat -x */ 317 char ovrio[KSTAT_DATA_CHAR_LEN]; /* name of ovr in iostat -x */ 318 } ii_kstat_info_t; 319 320 /* 321 * II device info structure 322 */ 323 324 typedef struct _ii_info_dev_s { 325 nsc_fd_t *bi_fd; /* Bitmap file descriptor */ 326 nsc_iodev_t *bi_iodev; /* I/O device structure */ 327 nsc_path_t *bi_tok; /* Register path token */ 328 int bi_ref; /* Count of fd's referencing */ 329 int bi_rsrv; /* Count of reserves held */ 330 int bi_orsrv; /* Reserves for other io prov */ 331 int bi_flag; /* Internal/External reserve */ 332 } _ii_info_dev_t; 333 334 typedef struct _ii_info_s { 335 struct _ii_info_s *bi_next; /* Chain of all groups */ 336 struct _ii_info_s *bi_head; /* head of sibling chain */ 337 struct _ii_info_s *bi_sibling; /* Chain of groups with same */ 338 /* master */ 339 struct _ii_info_s *bi_master; /* location of master */ 340 struct _ii_info_s *bi_nextmst; /* next multimaster */ 341 kmutex_t bi_mutex; /* Mutex */ 342 _ii_info_dev_t *bi_mstdev; 343 _ii_info_dev_t *bi_mstrdev; 344 _ii_info_dev_t bi_shddev; 345 _ii_info_dev_t bi_shdrdev; 346 _ii_info_dev_t bi_bmpdev; 347 char bi_keyname[DSW_NAMELEN]; 348 unsigned char *bi_bitmap; /* Master device bitmap */ 349 char *bi_cluster; /* cluster name */ 350 char *bi_group; /* group name */ 351 char *bi_busy; /* Busy bitmap */ 352 nsc_off_t bi_shdfba; /* location of shadow bitmap */ 353 nsc_size_t bi_shdbits; /* shadow bitmap counter */ 354 nsc_off_t bi_copyfba; /* location of copy bitmap */ 355 nsc_size_t bi_copybits; /* copy bitmap counter */ 356 nsc_size_t bi_size; /* Size of mst device */ 357 uint_t bi_flags; /* Flags */ 358 uint_t bi_state; /* State flags */ 359 int bi_disabled; /* Disable has started */ 360 int bi_ioctl; /* Number of active ioctls */ 361 int bi_release; /* Do a release in copyvol */ 362 int bi_rsrvcnt; /* reserve count */ 363 kcondvar_t bi_copydonecv; /* Copy operation condvar */ 364 kcondvar_t bi_reservecv; /* Reserve condvar */ 365 kcondvar_t bi_releasecv; /* Release condvar */ 366 kcondvar_t bi_closingcv; /* Shadow closing condvar */ 367 kcondvar_t bi_ioctlcv; /* Ioctls complete condvar */ 368 kcondvar_t bi_busycv; /* Busy bitmap condvar */ 369 krwlock_t bi_busyrw; /* Busy bitmap rwlock */ 370 struct _ii_bmp_ops_s *bi_bitmap_ops; /* Functions for bitmap ops */ 371 kmutex_t bi_rsrvmutex; /* Reserve operation mutex */ 372 kmutex_t bi_rlsemutex; /* Release operation mutex */ 373 kmutex_t bi_bmpmutex; /* mutex for bi_bitmap_ops */ 374 chunkid_t bi_mstchks; 375 chunkid_t bi_shdchks; /* # of chunks on shadow vol */ 376 chunkid_t bi_shdchkused; /* # of allocated */ 377 chunkid_t bi_shdfchk; /* start of shd chunk flst */ 378 _ii_overflow_t *bi_overflow; 379 struct ii_fd_s *bi_iifd; /* fd holding master's ip */ 380 int32_t bi_throttle_unit; 381 int32_t bi_throttle_delay; 382 krwlock_t bi_linkrw; /* altering linkage rwlock */ 383 kmutex_t bi_chksmutex; /* Mutex for bi_???chks */ 384 pid_t bi_locked_pid; /* lock pid for update/copy */ 385 kstat_t *bi_kstat; /* kstat data for set */ 386 ii_kstat_info_t bi_kstat_io; /* kstat I/O data for set */ 387 time_t bi_mtime; 388 } _ii_info_t; 389 390 #define bi_bmpfd bi_bmpdev.bi_fd 391 #define bi_mstfd bi_mstdev->bi_fd 392 #define bi_mstrfd bi_mstrdev->bi_fd 393 #define bi_shdfd bi_shddev.bi_fd 394 #define bi_shdrfd bi_shdrdev.bi_fd 395 #define bi_mst_iodev bi_mstdev->bi_iodev 396 #define bi_mstr_iodev bi_mstrdev->bi_iodev 397 #define bi_shd_iodev bi_shddev.bi_iodev 398 #define bi_shdr_iodev bi_shdrdev.bi_iodev 399 #define bi_bmp_iodev bi_bmpdev.bi_iodev 400 #define bi_mst_tok bi_mstdev->bi_tok 401 #define bi_mstr_tok bi_mstrdev->bi_tok 402 #define bi_shd_tok bi_shddev.bi_tok 403 #define bi_shdr_tok bi_shdrdev.bi_tok 404 #define bi_bmp_tok bi_bmpdev.bi_tok 405 #define bi_mstref bi_mstdev->bi_ref 406 #define bi_mstrref bi_mstrdev->bi_ref 407 #define bi_shdref bi_shddev.bi_ref 408 #define bi_shdrref bi_shdrdev.bi_ref 409 #define bi_bmpref bi_bmpdev.bi_ref 410 #define bi_mstrsrv bi_mstdev->bi_rsrv 411 #define bi_mstrrsrv bi_mstrdev->bi_rsrv 412 #define bi_shdrsrv bi_shddev.bi_rsrv 413 #define bi_shdrrsrv bi_shdrdev.bi_rsrv 414 #define bi_bmprsrv bi_bmpdev.bi_rsrv 415 #define bi_mstrflag bi_mstrdev->bi_flag 416 #define bi_shdrflag bi_shdrdev.bi_flag 417 /* 418 * Cluster and group linked lists 419 */ 420 typedef struct _ii_lstinfo_s { 421 _ii_info_t *lst_ip; /* ptr to info_t */ 422 struct _ii_lstinfo_s *lst_next; /* ptr to next in chain */ 423 } _ii_lstinfo_t; 424 425 typedef struct _ii_lsthead_s { 426 uint64_t lst_hash; /* from nsc_strhash */ 427 char lst_name[DSW_NAMELEN]; /* resource group */ 428 _ii_lstinfo_t *lst_start; /* start of set list */ 429 struct _ii_lsthead_s *lst_next; /* next list head */ 430 } _ii_lsthead_t; 431 432 /* 433 * Flag set and clear macros and function. 434 */ 435 436 void _ii_flag_op(int and, int or, _ii_info_t *ip, int update); 437 438 #define II_FLAG_SET(f, ip) _ii_flag_op(~0, (f), ip, TRUE) 439 #define II_FLAG_CLR(f, ip) _ii_flag_op(~(f), 0, ip, TRUE) 440 441 #define II_FLAG_SETX(f, ip) _ii_flag_op(~0, (f), ip, FALSE) 442 #define II_FLAG_CLRX(f, ip) _ii_flag_op(~(f), 0, ip, FALSE) 443 #define II_FLAG_ASSIGN(f, ip) _ii_flag_op(0, (f), ip, FALSE); 444 #define LOG_EVENT(msg, level) \ 445 nsc_do_sysevent("ii", msg, level, level, component, ii_dip); 446 447 /* Reserve and release macros */ 448 449 /* also used by ii_volume() volume identification, hence NONE & OVR */ 450 #define NONE 0x0000 /* no volume type */ 451 #define MST 0x0001 /* master reserve/release flag */ 452 #define MSTR 0x0010 /* raw master reserve/release flag */ 453 #define SHD 0x0002 /* shadow reserve/release flag */ 454 #define SHDR 0x0020 /* raw shadow reserve/release flag */ 455 #define BMP 0x0100 /* bitmap reserve/release flag */ 456 #define OVR 0x0400 /* overflow volume */ 457 458 #define RSRV(ip) ((ip)->bi_rsrv > 0 || (ip)->bi_orsrv > 0) 459 460 #define MSTRSRV(ip) (RSRV(((ip)->bi_mstdev))) 461 #define SHDRSRV(ip) (RSRV(&((ip)->bi_shddev))) 462 463 #define MSTFD(ip) (MSTRSRV(ip) ? (ip)->bi_mstfd : (ip)->bi_mstrfd) 464 #define SHDFD(ip) (SHDRSRV(ip) ? (ip)->bi_shdfd : (ip)->bi_shdrfd) 465 #define OVRFD(ip) (ip->bi_overflow->ii_dev->bi_fd) 466 467 #define II_RAW(ii) (((ii)->ii_oflags&NSC_DEVICE) != 0) 468 #define II_FD(ii) ((ii)->ii_shd ? SHDFD((ii)->ii_info) : \ 469 MSTFD((ii)->ii_info)) 470 471 /* are there multiple shadows of ip's master volume? */ 472 #define NSHADOWS(ip) ((ip)->bi_head != (ip) || (ip)->bi_sibling) 473 474 typedef struct _ii_bmp_ops_s { 475 int (*co_bmp)(_ii_info_t *, nsc_off_t, unsigned char *, int); 476 int (*ci_bmp)(_ii_info_t *, nsc_off_t, unsigned char *, int); 477 int (*zerobm)(_ii_info_t *); 478 int (*copybm)(_ii_info_t *); 479 int (*orbm)(_ii_info_t *); 480 int (*tst_shd_bit)(_ii_info_t *, chunkid_t); 481 int (*set_shd_bit)(_ii_info_t *, chunkid_t); 482 int (*tst_copy_bit)(_ii_info_t *, chunkid_t); 483 int (*set_copy_bit)(_ii_info_t *, chunkid_t); 484 int (*clr_copy_bits)(_ii_info_t *, chunkid_t, int); 485 chunkid_t (*next_copy_bit)(_ii_info_t *, chunkid_t, chunkid_t, 486 int, int *); 487 int (*fill_copy_bmp)(_ii_info_t *); 488 int (*load_bmp)(_ii_info_t *, int); 489 int (*save_bmp)(_ii_info_t *, int); 490 int (*change_bmp)(_ii_info_t *, unsigned char *); 491 int (*cnt_bits)(_ii_info_t *, nsc_off_t, nsc_size_t *, int); 492 int (*join_bmp)(_ii_info_t *, _ii_info_t *); 493 } _ii_bmp_ops_t; 494 495 #define II_CO_BMP(ip, a, b, c) (*(ip)->bi_bitmap_ops->co_bmp)(ip, a, b, c) 496 #define II_CI_BMP(ip, a, b, c) (*(ip)->bi_bitmap_ops->ci_bmp)(ip, a, b, c) 497 #define II_ZEROBM(ip) (*(ip)->bi_bitmap_ops->zerobm)(ip) 498 #define II_COPYBM(ip) (*(ip)->bi_bitmap_ops->copybm)(ip) 499 #define II_ORBM(ip) (*(ip)->bi_bitmap_ops->orbm)(ip) 500 #define II_TST_SHD_BIT(ip, c) (*(ip)->bi_bitmap_ops->tst_shd_bit)(ip, c) 501 #define II_SET_SHD_BIT(ip, c) (*(ip)->bi_bitmap_ops->set_shd_bit)(ip, c) 502 #define II_TST_COPY_BIT(ip, c) (*(ip)->bi_bitmap_ops->tst_copy_bit)(ip, c) 503 #define II_SET_COPY_BIT(ip, c) (*(ip)->bi_bitmap_ops->set_copy_bit)(ip, c) 504 #define II_CLR_COPY_BITS(ip, c, n) (*(ip)->bi_bitmap_ops->clr_copy_bits) \ 505 (ip, c, n) 506 #define II_CLR_COPY_BIT(ip, c) (*(ip)->bi_bitmap_ops->clr_copy_bits)(ip, c, 1) 507 #define II_NEXT_COPY_BIT(ip, c, m, w, g) \ 508 (*(ip)->bi_bitmap_ops->next_copy_bit)(ip, c, m, w, g) 509 #define II_FILL_COPY_BMP(ip) (*(ip)->bi_bitmap_ops->fill_copy_bmp)(ip) 510 #define II_LOAD_BMP(ip, f) (*(ip)->bi_bitmap_ops->load_bmp)(ip, f) 511 #define II_SAVE_BMP(ip, f) (*(ip)->bi_bitmap_ops->save_bmp)(ip, f) 512 #define II_CHANGE_BMP(ip, p) (*(ip)->bi_bitmap_ops->change_bmp)(ip, p) 513 #define II_CNT_BITS(ip, a, b, c) (*(ip)->bi_bitmap_ops->cnt_bits)(ip, a, b, c) 514 #define II_JOIN_BMP(dip, sip) (*(ip)->bi_bitmap_ops->join_bmp)(dip, sip) 515 516 /* 517 * State flags 518 */ 519 #define DSW_IOCTL 0x0001 /* Waiting for ioctl to complete */ 520 #define DSW_CLOSING 0x0002 /* Waiting for shadow to close */ 521 #define DSW_MSTTARGET 0x0004 /* Master is target of update */ 522 #define DSW_MULTIMST 0x0008 /* disabled set is multi master */ 523 #define DSW_CNTSHDBITS 0x0010 /* need to count # of shd bits set */ 524 #define DSW_CNTCPYBITS 0x0020 /* need to count # of copy bits set */ 525 526 /* 527 * DSW file descriptor structure 528 */ 529 530 typedef struct ii_fd_s { 531 _ii_info_t *ii_info; /* Info structure */ 532 int ii_bmp; /* This fd is for the bmp device */ 533 int ii_shd; /* This fd is for the shadow device */ 534 int ii_ovr; /* This fd is for the overflow device */ 535 _ii_overflow_t *ii_optr; /* pointer to overflow structure */ 536 int ii_oflags; /* raw or cached open type */ 537 } ii_fd_t; 538 539 540 /* 541 * II buffer header 542 */ 543 544 typedef struct ii_buf_s { 545 nsc_buf_t ii_bufh; /* exported buffer header */ 546 nsc_buf_t *ii_bufp; /* main underlying buffer */ 547 nsc_buf_t *ii_bufp2; /* second underlying buffer */ 548 nsc_buf_t *ii_abufp; /* anonymous underlying buffer */ 549 ii_fd_t *ii_fd; /* back link */ 550 int ii_rsrv; /* fd to release in free_buf */ 551 } ii_buf_t; 552 #endif /* _KERNEL || _KMEMUSER */ 553 554 555 /* 556 * Valid magic numbers in the bitmap volume header 557 */ 558 559 #define DSW_DIRTY 0x44495254 560 #define DSW_CLEAN 0x434C4541 561 #define DSW_INVALID 0x00000000 562 563 /* 564 * II_HEADER_VERSION 565 * 1 = original II header version 566 * 2 = Compact Dependent Shadows (DSW_TREEMAP) 567 * 3 = Persistance of throttle parameters 568 * 4 = add cluster & group information 569 * 5 = add time string to hold last modify time 570 */ 571 #define II_HEADER_VERSION 5 572 573 /* 574 * DSW bitmap volume header structure 575 */ 576 577 typedef struct ii_header_s { 578 int32_t ii_magic; /* magic number */ 579 int32_t ii_type; /* bitmap or independent copy */ 580 int32_t ii_state; /* State of the master/shadow/bitmap tuple */ 581 int32_t ii_version; /* version or format of bitmap volume */ 582 int32_t ii_shdfba; /* location of shadow bitmap */ 583 int32_t ii_copyfba; /* location of copy bitmap */ 584 char master_vol[DSW_NAMELEN]; 585 char shadow_vol[DSW_NAMELEN]; 586 char bitmap_vol[DSW_NAMELEN]; 587 /* II_HEADER_VERSION 2 */ 588 char overflow_vol[DSW_NAMELEN]; 589 int64_t ii_mstchks; /* # of chunks in master volume */ 590 int64_t ii_shdchks; /* # of chunks in shadow volume */ 591 int64_t ii_shdchkused; /* # of shd chunks allocated or on free list */ 592 int64_t ii_shdfchk; /* list of free shadow chunks */ 593 /* II_HEADER_VERSION 3 */ 594 int32_t ii_throttle_unit; /* Last setting of throttle unit */ 595 int32_t ii_throttle_delay; /* Last setting of throttle delay */ 596 /* II_HEADER_VERSION 4 */ 597 char clstr_name[DSW_NAMELEN]; 598 char group_name[DSW_NAMELEN]; 599 /* II_HEADER_VERSION 5 */ 600 time_t ii_mtime; 601 } ii_header_t; 602 603 #define II_SUCCESS(rc) (((rc) == NSC_DONE) || ((rc) == NSC_HIT)) 604 605 /* 606 * Overflow volume defines. 607 */ 608 609 #define II_OMAGIC 0x476F6C64 /* "Gold" */ 610 #define II_ISOVERFLOW(n) ((n) < 0 && (n) != II_NULLCHUNK) 611 #define II_2OVERFLOW(n) (-(n)) 612 /* -tive node id's are in overflow volume */ 613 614 #ifdef _SunOS_5_6 615 #define II_NULLNODE (INT_MIN) 616 #define II_NULLCHUNK (INT_MIN) 617 #else 618 #ifdef II_MULTIMULTI_TERABYTE 619 #define II_NULLNODE (INT64_MIN) 620 #define II_NULLCHUNK (INT64_MIN) 621 #define II_NULL32NODE (INT32_MIN) 622 #define II_NULL32CHUNK (INT32_MIN) 623 #else 624 #define II_NULLNODE (INT32_MIN) 625 #define II_NULLCHUNK (INT32_MIN) 626 #endif /* II_MULTIMULTI_TERABYTE */ 627 #endif 628 629 #ifdef __cplusplus 630 } 631 #endif 632 633 #endif /* _DSW_DEV_H */ 634