1/*- 2 * Copyright (c) 2002 Poul-Henning Kamp 3 * Copyright (c) 2002 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7 * and NAI Labs, the Security Research Division of Network Associates, Inc. 8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9 * DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The names of the authors may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 *
| 1/*- 2 * Copyright (c) 2002 Poul-Henning Kamp 3 * Copyright (c) 2002 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by Poul-Henning Kamp 7 * and NAI Labs, the Security Research Division of Network Associates, Inc. 8 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 9 * DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The names of the authors may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 *
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36 */ 37 38#ifndef _GEOM_GEOM_H_ 39#define _GEOM_GEOM_H_ 40 41#include <sys/lock.h> 42#include <sys/mutex.h> 43#include <sys/sx.h> 44#include <sys/queue.h> 45#include <sys/ioccom.h> 46#include <sys/conf.h> 47#include <sys/module.h> 48 49struct g_class; 50struct g_geom; 51struct g_consumer; 52struct g_provider; 53struct g_stat; 54struct thread; 55struct bio; 56struct sbuf; 57struct gctl_req; 58struct g_configargs; 59 60typedef int g_config_t (struct g_configargs *ca); 61typedef void g_ctl_req_t (struct gctl_req *, struct g_class *cp, char const *verb); 62typedef int g_ctl_create_geom_t (struct gctl_req *, struct g_class *cp, struct g_provider *pp); 63typedef int g_ctl_destroy_geom_t (struct gctl_req *, struct g_class *cp, struct g_geom *gp); 64typedef int g_ctl_config_geom_t (struct gctl_req *, struct g_geom *gp, const char *verb); 65typedef void g_init_t (struct g_class *mp); 66typedef void g_fini_t (struct g_class *mp); 67typedef struct g_geom * g_taste_t (struct g_class *, struct g_provider *, int flags); 68typedef int g_ioctl_t(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td); 69#define G_TF_NORMAL 0 70#define G_TF_INSIST 1 71#define G_TF_TRANSPARENT 2 72typedef int g_access_t (struct g_provider *, int, int, int); 73/* XXX: not sure about the thread arg */ 74typedef void g_orphan_t (struct g_consumer *); 75 76typedef void g_start_t (struct bio *); 77typedef void g_spoiled_t (struct g_consumer *); 78typedef void g_attrchanged_t (struct g_consumer *, const char *attr); 79typedef void g_provgone_t (struct g_provider *); 80typedef void g_dumpconf_t (struct sbuf *, const char *indent, struct g_geom *, 81 struct g_consumer *, struct g_provider *); 82 83/* 84 * The g_class structure describes a transformation class. In other words 85 * all BSD disklabel handlers share one g_class, all MBR handlers share 86 * one common g_class and so on. 87 * Certain operations are instantiated on the class, most notably the 88 * taste and config_geom functions. 89 */ 90struct g_class { 91 const char *name; 92 u_int version; 93 u_int spare0; 94 g_taste_t *taste; 95 g_config_t *config; 96 g_ctl_req_t *ctlreq; 97 g_init_t *init; 98 g_fini_t *fini; 99 g_ctl_destroy_geom_t *destroy_geom; 100 /* 101 * Default values for geom methods 102 */ 103 g_start_t *start; 104 g_spoiled_t *spoiled; 105 g_attrchanged_t *attrchanged;
| 36 */ 37 38#ifndef _GEOM_GEOM_H_ 39#define _GEOM_GEOM_H_ 40 41#include <sys/lock.h> 42#include <sys/mutex.h> 43#include <sys/sx.h> 44#include <sys/queue.h> 45#include <sys/ioccom.h> 46#include <sys/conf.h> 47#include <sys/module.h> 48 49struct g_class; 50struct g_geom; 51struct g_consumer; 52struct g_provider; 53struct g_stat; 54struct thread; 55struct bio; 56struct sbuf; 57struct gctl_req; 58struct g_configargs; 59 60typedef int g_config_t (struct g_configargs *ca); 61typedef void g_ctl_req_t (struct gctl_req *, struct g_class *cp, char const *verb); 62typedef int g_ctl_create_geom_t (struct gctl_req *, struct g_class *cp, struct g_provider *pp); 63typedef int g_ctl_destroy_geom_t (struct gctl_req *, struct g_class *cp, struct g_geom *gp); 64typedef int g_ctl_config_geom_t (struct gctl_req *, struct g_geom *gp, const char *verb); 65typedef void g_init_t (struct g_class *mp); 66typedef void g_fini_t (struct g_class *mp); 67typedef struct g_geom * g_taste_t (struct g_class *, struct g_provider *, int flags); 68typedef int g_ioctl_t(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td); 69#define G_TF_NORMAL 0 70#define G_TF_INSIST 1 71#define G_TF_TRANSPARENT 2 72typedef int g_access_t (struct g_provider *, int, int, int); 73/* XXX: not sure about the thread arg */ 74typedef void g_orphan_t (struct g_consumer *); 75 76typedef void g_start_t (struct bio *); 77typedef void g_spoiled_t (struct g_consumer *); 78typedef void g_attrchanged_t (struct g_consumer *, const char *attr); 79typedef void g_provgone_t (struct g_provider *); 80typedef void g_dumpconf_t (struct sbuf *, const char *indent, struct g_geom *, 81 struct g_consumer *, struct g_provider *); 82 83/* 84 * The g_class structure describes a transformation class. In other words 85 * all BSD disklabel handlers share one g_class, all MBR handlers share 86 * one common g_class and so on. 87 * Certain operations are instantiated on the class, most notably the 88 * taste and config_geom functions. 89 */ 90struct g_class { 91 const char *name; 92 u_int version; 93 u_int spare0; 94 g_taste_t *taste; 95 g_config_t *config; 96 g_ctl_req_t *ctlreq; 97 g_init_t *init; 98 g_fini_t *fini; 99 g_ctl_destroy_geom_t *destroy_geom; 100 /* 101 * Default values for geom methods 102 */ 103 g_start_t *start; 104 g_spoiled_t *spoiled; 105 g_attrchanged_t *attrchanged;
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144 void *spare1; 145 void *softc; 146 unsigned flags; 147#define G_GEOM_WITHER 1 148#define G_GEOM_VOLATILE_BIO 2 149}; 150 151/* 152 * The g_bioq is a queue of struct bio's. 153 * XXX: possibly collection point for statistics. 154 * XXX: should (possibly) be collapsed with sys/bio.h::bio_queue_head. 155 */ 156struct g_bioq { 157 TAILQ_HEAD(, bio) bio_queue; 158 struct mtx bio_queue_lock; 159 int bio_queue_length; 160}; 161 162/* 163 * A g_consumer is an attachment point for a g_provider. One g_consumer 164 * can only be attached to one g_provider, but multiple g_consumers 165 * can be attached to one g_provider. 166 */ 167 168struct g_consumer { 169 struct g_geom *geom; 170 LIST_ENTRY(g_consumer) consumer; 171 struct g_provider *provider; 172 LIST_ENTRY(g_consumer) consumers; /* XXX: better name */ 173 int acr, acw, ace; 174 int spoiled; 175 struct devstat *stat; 176 u_int nstart, nend; 177 178 /* Two fields for the implementing class to use */ 179 void *private; 180 u_int index; 181}; 182 183/* 184 * A g_provider is a "logical disk". 185 */ 186struct g_provider { 187 char *name; 188 LIST_ENTRY(g_provider) provider; 189 struct g_geom *geom; 190 LIST_HEAD(,g_consumer) consumers; 191 int acr, acw, ace; 192 int error; 193 TAILQ_ENTRY(g_provider) orphan; 194 off_t mediasize; 195 u_int sectorsize; 196 u_int stripesize; 197 u_int stripeoffset; 198 struct devstat *stat; 199 u_int nstart, nend; 200 u_int flags; 201#define G_PF_CANDELETE 0x1 202#define G_PF_WITHER 0x2 203#define G_PF_ORPHAN 0x4 204 205 /* Two fields for the implementing class to use */ 206 void *private; 207 u_int index; 208}; 209 210/* 211 * Descriptor of a classifier. We can register a function and 212 * an argument, which is called by g_io_request() on bio's 213 * that are not previously classified. 214 */ 215struct g_classifier_hook { 216 TAILQ_ENTRY(g_classifier_hook) link; 217 int (*func)(void *arg, struct bio *bp); 218 void *arg; 219}; 220 221/* BIO_GETATTR("GEOM::setstate") argument values. */ 222#define G_STATE_FAILED 0 223#define G_STATE_REBUILD 1 224#define G_STATE_RESYNC 2 225#define G_STATE_ACTIVE 3 226 227/* geom_dev.c */ 228struct cdev; 229void g_dev_print(void); 230void g_dev_physpath_changed(void); 231struct g_provider *g_dev_getprovider(struct cdev *dev); 232 233/* geom_dump.c */ 234void g_trace(int level, const char *, ...); 235# define G_T_TOPOLOGY 1 236# define G_T_BIO 2 237# define G_T_ACCESS 4 238 239 240/* geom_event.c */ 241typedef void g_event_t(void *, int flag); 242#define EV_CANCEL 1 243int g_post_event(g_event_t *func, void *arg, int flag, ...); 244int g_waitfor_event(g_event_t *func, void *arg, int flag, ...); 245void g_cancel_event(void *ref); 246int g_attr_changed(struct g_provider *pp, const char *attr, int flag); 247void g_orphan_provider(struct g_provider *pp, int error); 248void g_waitidlelock(void); 249 250/* geom_subr.c */ 251int g_access(struct g_consumer *cp, int nread, int nwrite, int nexcl); 252int g_attach(struct g_consumer *cp, struct g_provider *pp); 253int g_compare_names(const char *namea, const char *nameb); 254void g_destroy_consumer(struct g_consumer *cp); 255void g_destroy_geom(struct g_geom *pp); 256void g_destroy_provider(struct g_provider *pp); 257void g_detach(struct g_consumer *cp); 258void g_error_provider(struct g_provider *pp, int error); 259struct g_provider *g_provider_by_name(char const *arg); 260int g_getattr__(const char *attr, struct g_consumer *cp, void *var, int len); 261#define g_getattr(a, c, v) g_getattr__((a), (c), (v), sizeof *(v)) 262int g_handleattr(struct bio *bp, const char *attribute, const void *val, 263 int len); 264int g_handleattr_int(struct bio *bp, const char *attribute, int val); 265int g_handleattr_off_t(struct bio *bp, const char *attribute, off_t val); 266int g_handleattr_str(struct bio *bp, const char *attribute, const char *str); 267struct g_consumer * g_new_consumer(struct g_geom *gp); 268struct g_geom * g_new_geomf(struct g_class *mp, const char *fmt, ...); 269struct g_provider * g_new_providerf(struct g_geom *gp, const char *fmt, ...); 270int g_retaste(struct g_class *mp); 271void g_spoil(struct g_provider *pp, struct g_consumer *cp); 272int g_std_access(struct g_provider *pp, int dr, int dw, int de); 273void g_std_done(struct bio *bp); 274void g_std_spoiled(struct g_consumer *cp); 275void g_wither_geom(struct g_geom *gp, int error); 276void g_wither_geom_close(struct g_geom *gp, int error); 277void g_wither_provider(struct g_provider *pp, int error); 278 279#if defined(DIAGNOSTIC) || defined(DDB) 280int g_valid_obj(void const *ptr); 281#endif 282#ifdef DIAGNOSTIC 283#define G_VALID_CLASS(foo) \ 284 KASSERT(g_valid_obj(foo) == 1, ("%p is not a g_class", foo)) 285#define G_VALID_GEOM(foo) \ 286 KASSERT(g_valid_obj(foo) == 2, ("%p is not a g_geom", foo)) 287#define G_VALID_CONSUMER(foo) \ 288 KASSERT(g_valid_obj(foo) == 3, ("%p is not a g_consumer", foo)) 289#define G_VALID_PROVIDER(foo) \ 290 KASSERT(g_valid_obj(foo) == 4, ("%p is not a g_provider", foo)) 291#else 292#define G_VALID_CLASS(foo) do { } while (0) 293#define G_VALID_GEOM(foo) do { } while (0) 294#define G_VALID_CONSUMER(foo) do { } while (0) 295#define G_VALID_PROVIDER(foo) do { } while (0) 296#endif 297 298int g_modevent(module_t, int, void *); 299 300/* geom_io.c */ 301struct bio * g_clone_bio(struct bio *); 302struct bio * g_duplicate_bio(struct bio *); 303void g_destroy_bio(struct bio *); 304void g_io_deliver(struct bio *bp, int error); 305int g_io_getattr(const char *attr, struct g_consumer *cp, int *len, void *ptr); 306int g_io_flush(struct g_consumer *cp); 307int g_register_classifier(struct g_classifier_hook *hook); 308void g_unregister_classifier(struct g_classifier_hook *hook); 309void g_io_request(struct bio *bp, struct g_consumer *cp); 310struct bio *g_new_bio(void); 311struct bio *g_alloc_bio(void); 312void * g_read_data(struct g_consumer *cp, off_t offset, off_t length, int *error); 313int g_write_data(struct g_consumer *cp, off_t offset, void *ptr, off_t length); 314int g_delete_data(struct g_consumer *cp, off_t offset, off_t length); 315void g_print_bio(struct bio *bp); 316 317/* geom_kern.c / geom_kernsim.c */ 318 319#ifdef _KERNEL 320 321extern struct sx topology_lock; 322 323struct g_kerneldump { 324 off_t offset; 325 off_t length; 326 struct dumperinfo di; 327}; 328 329MALLOC_DECLARE(M_GEOM); 330 331static __inline void * 332g_malloc(int size, int flags) 333{ 334 void *p; 335 336 p = malloc(size, M_GEOM, flags); 337 return (p); 338} 339 340static __inline void 341g_free(void *ptr) 342{ 343 344#ifdef DIAGNOSTIC 345 if (sx_xlocked(&topology_lock)) { 346 KASSERT(g_valid_obj(ptr) == 0, 347 ("g_free(%p) of live object, type %d", ptr, 348 g_valid_obj(ptr))); 349 } 350#endif 351 free(ptr, M_GEOM); 352} 353 354#define g_topology_lock() \ 355 do { \ 356 mtx_assert(&Giant, MA_NOTOWNED); \ 357 sx_xlock(&topology_lock); \ 358 } while (0) 359 360#define g_topology_try_lock() sx_try_xlock(&topology_lock) 361 362#define g_topology_unlock() \ 363 do { \ 364 sx_xunlock(&topology_lock); \ 365 } while (0) 366 367#define g_topology_assert() \ 368 do { \ 369 sx_assert(&topology_lock, SX_XLOCKED); \ 370 } while (0) 371 372#define g_topology_assert_not() \ 373 do { \ 374 sx_assert(&topology_lock, SX_UNLOCKED); \ 375 } while (0) 376 377#define g_topology_sleep(chan, timo) \ 378 sx_sleep(chan, &topology_lock, 0, "gtopol", timo) 379 380#define DECLARE_GEOM_CLASS(class, name) \ 381 static moduledata_t name##_mod = { \ 382 #name, g_modevent, &class \ 383 }; \ 384 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 385 386#endif /* _KERNEL */ 387 388/* geom_ctl.c */ 389int gctl_set_param(struct gctl_req *req, const char *param, void const *ptr, int len); 390void gctl_set_param_err(struct gctl_req *req, const char *param, void const *ptr, int len); 391void *gctl_get_param(struct gctl_req *req, const char *param, int *len); 392char const *gctl_get_asciiparam(struct gctl_req *req, const char *param); 393void *gctl_get_paraml(struct gctl_req *req, const char *param, int len); 394int gctl_error(struct gctl_req *req, const char *fmt, ...) __printflike(2, 3); 395struct g_class *gctl_get_class(struct gctl_req *req, char const *arg); 396struct g_geom *gctl_get_geom(struct gctl_req *req, struct g_class *mpr, char const *arg); 397struct g_provider *gctl_get_provider(struct gctl_req *req, char const *arg); 398 399#endif /* _GEOM_GEOM_H_ */
| 142 void *spare1; 143 void *softc; 144 unsigned flags; 145#define G_GEOM_WITHER 1 146#define G_GEOM_VOLATILE_BIO 2 147}; 148 149/* 150 * The g_bioq is a queue of struct bio's. 151 * XXX: possibly collection point for statistics. 152 * XXX: should (possibly) be collapsed with sys/bio.h::bio_queue_head. 153 */ 154struct g_bioq { 155 TAILQ_HEAD(, bio) bio_queue; 156 struct mtx bio_queue_lock; 157 int bio_queue_length; 158}; 159 160/* 161 * A g_consumer is an attachment point for a g_provider. One g_consumer 162 * can only be attached to one g_provider, but multiple g_consumers 163 * can be attached to one g_provider. 164 */ 165 166struct g_consumer { 167 struct g_geom *geom; 168 LIST_ENTRY(g_consumer) consumer; 169 struct g_provider *provider; 170 LIST_ENTRY(g_consumer) consumers; /* XXX: better name */ 171 int acr, acw, ace; 172 int spoiled; 173 struct devstat *stat; 174 u_int nstart, nend; 175 176 /* Two fields for the implementing class to use */ 177 void *private; 178 u_int index; 179}; 180 181/* 182 * A g_provider is a "logical disk". 183 */ 184struct g_provider { 185 char *name; 186 LIST_ENTRY(g_provider) provider; 187 struct g_geom *geom; 188 LIST_HEAD(,g_consumer) consumers; 189 int acr, acw, ace; 190 int error; 191 TAILQ_ENTRY(g_provider) orphan; 192 off_t mediasize; 193 u_int sectorsize; 194 u_int stripesize; 195 u_int stripeoffset; 196 struct devstat *stat; 197 u_int nstart, nend; 198 u_int flags; 199#define G_PF_CANDELETE 0x1 200#define G_PF_WITHER 0x2 201#define G_PF_ORPHAN 0x4 202 203 /* Two fields for the implementing class to use */ 204 void *private; 205 u_int index; 206}; 207 208/* 209 * Descriptor of a classifier. We can register a function and 210 * an argument, which is called by g_io_request() on bio's 211 * that are not previously classified. 212 */ 213struct g_classifier_hook { 214 TAILQ_ENTRY(g_classifier_hook) link; 215 int (*func)(void *arg, struct bio *bp); 216 void *arg; 217}; 218 219/* BIO_GETATTR("GEOM::setstate") argument values. */ 220#define G_STATE_FAILED 0 221#define G_STATE_REBUILD 1 222#define G_STATE_RESYNC 2 223#define G_STATE_ACTIVE 3 224 225/* geom_dev.c */ 226struct cdev; 227void g_dev_print(void); 228void g_dev_physpath_changed(void); 229struct g_provider *g_dev_getprovider(struct cdev *dev); 230 231/* geom_dump.c */ 232void g_trace(int level, const char *, ...); 233# define G_T_TOPOLOGY 1 234# define G_T_BIO 2 235# define G_T_ACCESS 4 236 237 238/* geom_event.c */ 239typedef void g_event_t(void *, int flag); 240#define EV_CANCEL 1 241int g_post_event(g_event_t *func, void *arg, int flag, ...); 242int g_waitfor_event(g_event_t *func, void *arg, int flag, ...); 243void g_cancel_event(void *ref); 244int g_attr_changed(struct g_provider *pp, const char *attr, int flag); 245void g_orphan_provider(struct g_provider *pp, int error); 246void g_waitidlelock(void); 247 248/* geom_subr.c */ 249int g_access(struct g_consumer *cp, int nread, int nwrite, int nexcl); 250int g_attach(struct g_consumer *cp, struct g_provider *pp); 251int g_compare_names(const char *namea, const char *nameb); 252void g_destroy_consumer(struct g_consumer *cp); 253void g_destroy_geom(struct g_geom *pp); 254void g_destroy_provider(struct g_provider *pp); 255void g_detach(struct g_consumer *cp); 256void g_error_provider(struct g_provider *pp, int error); 257struct g_provider *g_provider_by_name(char const *arg); 258int g_getattr__(const char *attr, struct g_consumer *cp, void *var, int len); 259#define g_getattr(a, c, v) g_getattr__((a), (c), (v), sizeof *(v)) 260int g_handleattr(struct bio *bp, const char *attribute, const void *val, 261 int len); 262int g_handleattr_int(struct bio *bp, const char *attribute, int val); 263int g_handleattr_off_t(struct bio *bp, const char *attribute, off_t val); 264int g_handleattr_str(struct bio *bp, const char *attribute, const char *str); 265struct g_consumer * g_new_consumer(struct g_geom *gp); 266struct g_geom * g_new_geomf(struct g_class *mp, const char *fmt, ...); 267struct g_provider * g_new_providerf(struct g_geom *gp, const char *fmt, ...); 268int g_retaste(struct g_class *mp); 269void g_spoil(struct g_provider *pp, struct g_consumer *cp); 270int g_std_access(struct g_provider *pp, int dr, int dw, int de); 271void g_std_done(struct bio *bp); 272void g_std_spoiled(struct g_consumer *cp); 273void g_wither_geom(struct g_geom *gp, int error); 274void g_wither_geom_close(struct g_geom *gp, int error); 275void g_wither_provider(struct g_provider *pp, int error); 276 277#if defined(DIAGNOSTIC) || defined(DDB) 278int g_valid_obj(void const *ptr); 279#endif 280#ifdef DIAGNOSTIC 281#define G_VALID_CLASS(foo) \ 282 KASSERT(g_valid_obj(foo) == 1, ("%p is not a g_class", foo)) 283#define G_VALID_GEOM(foo) \ 284 KASSERT(g_valid_obj(foo) == 2, ("%p is not a g_geom", foo)) 285#define G_VALID_CONSUMER(foo) \ 286 KASSERT(g_valid_obj(foo) == 3, ("%p is not a g_consumer", foo)) 287#define G_VALID_PROVIDER(foo) \ 288 KASSERT(g_valid_obj(foo) == 4, ("%p is not a g_provider", foo)) 289#else 290#define G_VALID_CLASS(foo) do { } while (0) 291#define G_VALID_GEOM(foo) do { } while (0) 292#define G_VALID_CONSUMER(foo) do { } while (0) 293#define G_VALID_PROVIDER(foo) do { } while (0) 294#endif 295 296int g_modevent(module_t, int, void *); 297 298/* geom_io.c */ 299struct bio * g_clone_bio(struct bio *); 300struct bio * g_duplicate_bio(struct bio *); 301void g_destroy_bio(struct bio *); 302void g_io_deliver(struct bio *bp, int error); 303int g_io_getattr(const char *attr, struct g_consumer *cp, int *len, void *ptr); 304int g_io_flush(struct g_consumer *cp); 305int g_register_classifier(struct g_classifier_hook *hook); 306void g_unregister_classifier(struct g_classifier_hook *hook); 307void g_io_request(struct bio *bp, struct g_consumer *cp); 308struct bio *g_new_bio(void); 309struct bio *g_alloc_bio(void); 310void * g_read_data(struct g_consumer *cp, off_t offset, off_t length, int *error); 311int g_write_data(struct g_consumer *cp, off_t offset, void *ptr, off_t length); 312int g_delete_data(struct g_consumer *cp, off_t offset, off_t length); 313void g_print_bio(struct bio *bp); 314 315/* geom_kern.c / geom_kernsim.c */ 316 317#ifdef _KERNEL 318 319extern struct sx topology_lock; 320 321struct g_kerneldump { 322 off_t offset; 323 off_t length; 324 struct dumperinfo di; 325}; 326 327MALLOC_DECLARE(M_GEOM); 328 329static __inline void * 330g_malloc(int size, int flags) 331{ 332 void *p; 333 334 p = malloc(size, M_GEOM, flags); 335 return (p); 336} 337 338static __inline void 339g_free(void *ptr) 340{ 341 342#ifdef DIAGNOSTIC 343 if (sx_xlocked(&topology_lock)) { 344 KASSERT(g_valid_obj(ptr) == 0, 345 ("g_free(%p) of live object, type %d", ptr, 346 g_valid_obj(ptr))); 347 } 348#endif 349 free(ptr, M_GEOM); 350} 351 352#define g_topology_lock() \ 353 do { \ 354 mtx_assert(&Giant, MA_NOTOWNED); \ 355 sx_xlock(&topology_lock); \ 356 } while (0) 357 358#define g_topology_try_lock() sx_try_xlock(&topology_lock) 359 360#define g_topology_unlock() \ 361 do { \ 362 sx_xunlock(&topology_lock); \ 363 } while (0) 364 365#define g_topology_assert() \ 366 do { \ 367 sx_assert(&topology_lock, SX_XLOCKED); \ 368 } while (0) 369 370#define g_topology_assert_not() \ 371 do { \ 372 sx_assert(&topology_lock, SX_UNLOCKED); \ 373 } while (0) 374 375#define g_topology_sleep(chan, timo) \ 376 sx_sleep(chan, &topology_lock, 0, "gtopol", timo) 377 378#define DECLARE_GEOM_CLASS(class, name) \ 379 static moduledata_t name##_mod = { \ 380 #name, g_modevent, &class \ 381 }; \ 382 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST); 383 384#endif /* _KERNEL */ 385 386/* geom_ctl.c */ 387int gctl_set_param(struct gctl_req *req, const char *param, void const *ptr, int len); 388void gctl_set_param_err(struct gctl_req *req, const char *param, void const *ptr, int len); 389void *gctl_get_param(struct gctl_req *req, const char *param, int *len); 390char const *gctl_get_asciiparam(struct gctl_req *req, const char *param); 391void *gctl_get_paraml(struct gctl_req *req, const char *param, int len); 392int gctl_error(struct gctl_req *req, const char *fmt, ...) __printflike(2, 3); 393struct g_class *gctl_get_class(struct gctl_req *req, char const *arg); 394struct g_geom *gctl_get_geom(struct gctl_req *req, struct g_class *mpr, char const *arg); 395struct g_provider *gctl_get_provider(struct gctl_req *req, char const *arg); 396 397#endif /* _GEOM_GEOM_H_ */
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