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 */