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 _SYS_SDEV_IMPL_H 27 #define _SYS_SDEV_IMPL_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #include <rpc/rpc.h> 36 #include <sys/dirent.h> 37 #include <sys/vfs.h> 38 #include <sys/vfs_opreg.h> 39 #include <sys/list.h> 40 #include <sys/nvpair.h> 41 42 /* 43 * sdev_nodes are the file-system specific part of the 44 * vnodes for the device filesystem. 45 * 46 * The device filesystem exports two node types: 47 * 48 * VDIR nodes to represent directories 49 * VCHR & VBLK nodes to represent devices 50 */ 51 52 /* 53 * /dev mount arguments 54 */ 55 struct sdev_mountargs { 56 uint64_t sdev_attrdir; 57 }; 58 59 60 /* 61 * Nvpair names of profile information (list of device files available) of 62 * non-global /dev mounts. These strings must be unique among them. 63 */ 64 #define SDEV_NVNAME_MOUNTPT "prof_mountpt" 65 #define SDEV_NVNAME_INCLUDE "prof_include" 66 #define SDEV_NVNAME_EXCLUDE "prof_exclude" 67 #define SDEV_NVNAME_SYMLINK "prof_symlink" 68 #define SDEV_NVNAME_MAP "prof_map" 69 70 /* 71 * supported devfsadm_cmd 72 */ 73 #define DEVFSADMD_RUN_ALL 1 74 #define DEVFSADMD_NS_LOOKUP 2 75 #define DEVFSADMD_NS_READDIR 3 76 77 /* 78 * supported protocols 79 */ 80 typedef enum devname_spec { 81 DEVNAME_NS_NONE = 0, 82 DEVNAME_NS_PATH, /* physical /devices path */ 83 DEVNAME_NS_DEV /* /dev path */ 84 } devname_spec_t; 85 86 /* 87 * devfsadm_error codes 88 */ 89 #define DEVFSADM_RUN_INVALID 1 90 #define DEVFSADM_RUN_EPERM 2 91 #define DEVFSADM_RUN_NOTSUP 3 92 #define DEVFSADM_NS_FAILED 4 93 94 typedef struct sdev_ns_handle { 95 char ns_name[MAXPATHLEN]; /* device to be looked up */ 96 char ns_map[MAXPATHLEN]; 97 } sdev_ns_handle_t; 98 99 typedef struct sdev_lkp_handle { 100 devname_spec_t devfsadm_spec; /* returned path property */ 101 char devfsadm_link[MAXPATHLEN]; /* symlink destination */ 102 } sdev_lkp_handle_t; 103 104 typedef struct sdev_rdr_handle { 105 uint32_t ns_mapcount; /* number of entries in the map */ 106 uint32_t maplist_size; 107 } sdev_rdr_handle_t; 108 109 /* 110 * devfsadm/devname door data structures 111 */ 112 typedef struct sdev_door_arg { 113 uint8_t devfsadm_cmd; /* what to do for devfsadm[d] */ 114 sdev_ns_handle_t ns_hdl; 115 } sdev_door_arg_t; 116 117 typedef struct sdev_door_res { 118 int32_t devfsadm_error; 119 sdev_lkp_handle_t ns_lkp_hdl; 120 sdev_rdr_handle_t ns_rdr_hdl; 121 } sdev_door_res_t; 122 123 #ifdef _KERNEL 124 125 struct sdev_dprof { 126 int has_glob; 127 nvlist_t *dev_name; 128 nvlist_t *dev_map; 129 nvlist_t *dev_symlink; 130 nvlist_t *dev_glob_incdir; 131 nvlist_t *dev_glob_excdir; 132 }; 133 134 /* 135 * devname_handle_t 136 */ 137 struct devname_handle { 138 struct sdev_node *dh_data; /* the sdev_node */ 139 devname_spec_t dh_spec; 140 void *dh_args; 141 }; 142 typedef struct devname_handle devname_handle_t; 143 144 /* 145 * Per-instance node data for the global zone instance 146 * Only one mount of /dev in the global zone 147 */ 148 typedef struct sdev_global_data { 149 struct devname_handle sdev_ghandle; 150 struct devname_nsmap *sdev_gmapinfo; /* VDIR name service info */ 151 ulong_t sdev_dir_ggen; /* name space generation # */ 152 } sdev_global_data_t; 153 154 /* 155 * Per-instance node data - profile data per non-global zone mount instance 156 */ 157 typedef struct sdev_local_data { 158 ulong_t sdev_dir_lgen; /* cached generation # of /dev dir */ 159 ulong_t sdev_devtree_lgen; /* cached generation # of devtree */ 160 struct sdev_node *sdev_lorigin; /* corresponding global sdev_node */ 161 struct sdev_dprof sdev_lprof; /* profile for multi-inst */ 162 } sdev_local_data_t; 163 164 /* 165 * /dev filesystem sdev_node defines 166 */ 167 typedef struct sdev_node { 168 char *sdev_name; /* node name */ 169 size_t sdev_namelen; /* strlen(sdev_name) */ 170 char *sdev_path; /* absolute path */ 171 char *sdev_symlink; /* source for a symlink */ 172 struct vnode *sdev_vnode; /* vnode */ 173 174 krwlock_t sdev_contents; /* rw lock for this data structure */ 175 struct sdev_node *sdev_dotdot; /* parent */ 176 struct sdev_node *sdev_dot; /* child: VDIR: head of children */ 177 struct sdev_node *sdev_next; /* sibling: next in this directory */ 178 179 struct vnode *sdev_attrvp; /* backing store vnode if persisted */ 180 struct vattr *sdev_attr; /* memory copy of the vattr */ 181 182 ino64_t sdev_ino; /* inode */ 183 uint_t sdev_nlink; /* link count */ 184 int sdev_state; /* state of this node */ 185 int sdev_flags; /* flags bit */ 186 187 kmutex_t sdev_lookup_lock; /* node creation synch lock */ 188 kcondvar_t sdev_lookup_cv; /* node creation sync cv */ 189 int sdev_lookup_flags; /* node creation flags */ 190 191 /* per-instance data, either global or non-global zone */ 192 union { 193 struct sdev_global_data sdev_globaldata; 194 struct sdev_local_data sdev_localdata; 195 } sdev_instance_data; 196 197 void *sdev_private; 198 } sdev_node_t; 199 200 #define sdev_ldata sdev_instance_data.sdev_localdata 201 #define sdev_gdata sdev_instance_data.sdev_globaldata 202 203 #define sdev_handle sdev_gdata.sdev_ghandle 204 #define sdev_mapinfo sdev_gdata.sdev_gmapinfo 205 #define sdev_gdir_gen sdev_gdata.sdev_dir_ggen 206 207 #define sdev_ldir_gen sdev_ldata.sdev_dir_lgen 208 #define sdev_devtree_gen sdev_ldata.sdev_devtree_lgen 209 #define sdev_origin sdev_ldata.sdev_lorigin 210 #define sdev_prof sdev_ldata.sdev_lprof 211 212 /* 213 * sdev_state 214 * 215 * A sdev_node may go through 3 states: 216 * SDEV_INIT: When a new /dev file is first looked up, a sdev_node 217 * is allocated, initialized and added to the directory's 218 * sdev_node cache. A node at this state will also 219 * have the SDEV_LOOKUP flag set. 220 * 221 * Other threads that are trying to look up a node at 222 * this state will be blocked until the SDEV_LOOKUP flag 223 * is cleared. 224 * 225 * When the SDEV_LOOKUP flag is cleared, the node may 226 * transition into the SDEV_READY state for a successful 227 * lookup or the node is removed from the directory cache 228 * and destroyed if the named node can not be found. 229 * An ENOENT error is returned for the second case. 230 * 231 * SDEV_READY: A /dev file has been successfully looked up and 232 * associated with a vnode. The /dev file is available 233 * for the supported /dev filesystem operations. 234 * 235 * SDEV_ZOMBIE: Deletion of a /dev file has been explicitely issued 236 * to an SDEV_READY node. The node is transitioned into 237 * the SDEV_ZOMBIE state if the vnode reference count 238 * is still held. A SDEV_ZOMBIE node does not support 239 * any of the /dev filesystem operations. A SDEV_ZOMBIE 240 * node is removed from the directory cache and destroyed 241 * once the reference count reaches "zero". 242 */ 243 typedef enum { 244 SDEV_ZOMBIE = -1, 245 SDEV_INIT = 0, 246 SDEV_READY 247 } sdev_node_state_t; 248 249 /* sdev_flags */ 250 #define SDEV_BUILD 0x0001 /* directory cache out-of-date */ 251 #define SDEV_STALE 0x0002 /* stale sdev nodes */ 252 #define SDEV_GLOBAL 0x0004 /* global /dev nodes */ 253 #define SDEV_PERSIST 0x0008 /* backing store persisted node */ 254 #define SDEV_NO_NCACHE 0x0010 /* do not include in neg. cache */ 255 #define SDEV_DYNAMIC 0x0020 /* special-purpose vnode ops */ 256 /* (ex: pts) */ 257 #define SDEV_VTOR 0x0040 /* validate sdev_nodes during search */ 258 #define SDEV_ATTR_INVALID 0x0080 /* invalid node attributes, */ 259 /* need update */ 260 261 /* sdev_lookup_flags */ 262 #define SDEV_LOOKUP 0x0001 /* node creation in progress */ 263 #define SDEV_READDIR 0x0002 /* VDIR readdir in progress */ 264 #define SDEV_LGWAITING 0x0004 /* waiting for devfsadm completion */ 265 266 #define SDEV_VTOR_INVALID -1 267 #define SDEV_VTOR_SKIP 0 268 #define SDEV_VTOR_VALID 1 269 270 /* convenient macros */ 271 #define SDEV_IS_GLOBAL(dv) \ 272 (dv->sdev_flags & SDEV_GLOBAL) 273 #define SDEV_IS_PERSIST(dv) \ 274 (dv->sdev_flags & SDEV_PERSIST) 275 #define SDEV_IS_DYNAMIC(dv) \ 276 (dv->sdev_flags & SDEV_DYNAMIC) 277 #define SDEV_IS_NO_NCACHE(dv) \ 278 (dv->sdev_flags & SDEV_NO_NCACHE) 279 280 #define SDEV_IS_LOOKUP(dv) \ 281 (dv->sdev_lookup_flags & SDEV_LOOKUP) 282 #define SDEV_IS_READDIR(dv) \ 283 (dv->sdev_lookup_flags & SDEV_READDIR) 284 #define SDEV_IS_LGWAITING(dv) \ 285 (dv->sdev_lookup_flags & SDEV_LGWAITING) 286 287 #define SDEVTOV(n) ((struct vnode *)(n)->sdev_vnode) 288 #define VTOSDEV(vp) ((struct sdev_node *)(vp)->v_data) 289 #define VN_HELD(v) ((v)->v_count != 0) 290 #define SDEV_HELD(dv) (VN_HELD(SDEVTOV(dv))) 291 #define SDEV_HOLD(dv) VN_HOLD(SDEVTOV(dv)) 292 #define SDEV_RELE(dv) VN_RELE(SDEVTOV(dv)) 293 #define SDEV_SIMPLE_RELE(dv) { \ 294 mutex_enter(&SDEVTOV(dv)->v_lock); \ 295 SDEVTOV(dv)->v_count--; \ 296 mutex_exit(&SDEVTOV(dv)->v_lock); \ 297 } 298 299 #define SDEV_ACL_FLAVOR(vp) (VFSTOSDEVFS(vp->v_vfsp)->sdev_acl_flavor) 300 301 /* 302 * some defaults 303 */ 304 #define SDEV_ROOTINO ((ino_t)2) 305 #define SDEV_UID_DEFAULT (0) 306 #define SDEV_GID_DEFAULT (3) 307 #define SDEV_DIRMODE_DEFAULT (S_IFDIR |0755) 308 #define SDEV_DEVMODE_DEFAULT (0600) 309 #define SDEV_LNKMODE_DEFAULT (S_IFLNK | 0777) 310 311 extern struct vattr sdev_vattr_dir; 312 extern struct vattr sdev_vattr_lnk; 313 extern struct vattr sdev_vattr_blk; 314 extern struct vattr sdev_vattr_chr; 315 316 /* 317 * devname_lookup_func() 318 */ 319 extern int devname_lookup_func(struct sdev_node *, char *, struct vnode **, 320 struct cred *, int (*)(struct sdev_node *, char *, void **, struct cred *, 321 void *, char *), int); 322 323 /* 324 * flags used by devname_lookup_func callbacks 325 */ 326 #define SDEV_PATH 0x1 /* callback returning /devices physical path */ 327 #define SDEV_VNODE 0x2 /* callback returning backing store vnode */ 328 #define SDEV_VATTR 0x4 /* callback returning node vattr */ 329 330 /* 331 * devname_readdir_func() 332 */ 333 extern int devname_readdir_func(vnode_t *, uio_t *, cred_t *, int *, int); 334 335 /* 336 * flags for devname_readdir_func 337 */ 338 #define SDEV_BROWSE 0x1 /* fetch all entries from backing store */ 339 340 /* 341 * devname_setattr_func() 342 */ 343 extern int devname_setattr_func(struct vnode *, struct vattr *, int, 344 struct cred *, int (*)(struct sdev_node *, struct vattr *, int), int); 345 346 /* 347 * devname_inactive_func() 348 */ 349 extern void devname_inactive_func(struct vnode *, struct cred *, 350 void (*)(struct vnode *)); 351 352 /* 353 * /dev file system instance defines 354 */ 355 /* 356 * /dev version of vfs_data 357 */ 358 struct sdev_data { 359 struct sdev_data *sdev_prev; 360 struct sdev_data *sdev_next; 361 struct sdev_node *sdev_root; 362 struct vfs *sdev_vfsp; 363 struct sdev_mountargs *sdev_mountargs; 364 ulong_t sdev_acl_flavor; 365 }; 366 367 #define VFSTOSDEVFS(vfsp) ((struct sdev_data *)((vfsp)->vfs_data)) 368 369 /* 370 * sdev_fid overlays the fid structure (for VFS_VGET) 371 */ 372 struct sdev_fid { 373 uint16_t sdevfid_len; 374 ino32_t sdevfid_ino; 375 int32_t sdevfid_gen; 376 }; 377 378 /* 379 * devfsadm and devname communication defines 380 */ 381 typedef enum { 382 DEVNAME_DEVFSADM_STOPPED = 0, /* devfsadm has never run */ 383 DEVNAME_DEVFSADM_RUNNING, /* devfsadm is running */ 384 DEVNAME_DEVFSADM_RUN /* devfsadm ran once */ 385 } devname_devfsadm_state_t; 386 387 extern volatile uint_t devfsadm_state; /* atomic mask for devfsadm status */ 388 389 #define DEVNAME_DEVFSADM_SET_RUNNING(devfsadm_state) \ 390 devfsadm_state = DEVNAME_DEVFSADM_RUNNING 391 #define DEVNAME_DEVFSADM_SET_STOP(devfsadm_state) \ 392 devfsadm_state = DEVNAME_DEVFSADM_STOPPED 393 #define DEVNAME_DEVFSADM_SET_RUN(devfsadm_state) \ 394 devfsadm_state = DEVNAME_DEVFSADM_RUN 395 #define DEVNAME_DEVFSADM_IS_RUNNING(devfsadm_state) \ 396 devfsadm_state == DEVNAME_DEVFSADM_RUNNING 397 #define DEVNAME_DEVFSADM_HAS_RUN(devfsadm_state) \ 398 (devfsadm_state == DEVNAME_DEVFSADM_RUN) 399 400 #define SDEV_BLOCK_OTHERS(dv, cmd) { \ 401 ASSERT(MUTEX_HELD(&dv->sdev_lookup_lock)); \ 402 dv->sdev_lookup_flags |= cmd; \ 403 } 404 extern void sdev_unblock_others(struct sdev_node *, uint_t); 405 #define SDEV_UNBLOCK_OTHERS(dv, cmd) { \ 406 sdev_unblock_others(dv, cmd); \ 407 } 408 409 #define SDEV_CLEAR_LOOKUP_FLAGS(dv, cmd) { \ 410 dv->sdev_lookup_flags &= ~cmd; \ 411 } 412 413 extern int sdev_wait4lookup(struct sdev_node *, int); 414 extern int devname_filename_register(int, char *); 415 extern int devname_nsmaps_register(char *, size_t); 416 extern void sdev_devfsadm_lockinit(void); 417 extern void sdev_devfsadm_lockdestroy(void); 418 extern void devname_add_devfsadm_node(char *); 419 extern void sdev_devfsadmd_thread(struct sdev_node *, struct sdev_node *, 420 struct cred *); 421 extern int devname_profile_update(char *, size_t); 422 extern struct sdev_data *sdev_find_mntinfo(char *); 423 void sdev_mntinfo_rele(struct sdev_data *); 424 extern struct vnodeops *devpts_getvnodeops(void); 425 426 /* 427 * Directory Based Device Naming (DBNR) defines 428 */ 429 430 #define ETC_DEV_DIR "/etc/dev" 431 #define DEVNAME_NSCONFIG "sdev_nsconfig_mod" 432 433 /* 434 * directory name rule 435 */ 436 struct devname_nsmap { 437 struct devname_nsmap *prev; /* previous entry */ 438 struct devname_nsmap *next; /* next entry */ 439 char *dir_name; /* /dev subdir name, e.g. /dev/disk */ 440 char *dir_module; /* devname module impl the operations */ 441 char *dir_map; /* dev naming rules, e.g. /etc/dev/disks */ 442 struct devname_ops *dir_ops; /* directory specific vnode ops */ 443 char *dir_newmodule; /* to be reloaded */ 444 char *dir_newmap; /* to be reloaded */ 445 int dir_invalid; /* map entry obsolete */ 446 int dir_maploaded; /* map contents read */ 447 krwlock_t dir_lock; /* protects the data structure */ 448 }; 449 450 /* 451 * name-property pairs to be looked up 452 */ 453 typedef struct devname_lkp_arg { 454 char *devname_dir; /* the directory to look */ 455 char *devname_name; /* the device name to be looked up */ 456 char *devname_map; /* the directory device naming map */ 457 int reserved; 458 } devname_lkp_arg_t; 459 460 /* 461 * name-value-property restured 462 */ 463 typedef struct devname_lkp_result { 464 devname_spec_t devname_spec; /* link to /devices or /dev */ 465 char *devname_link; /* the source path */ 466 int reserved; 467 } devname_lkp_result_t; 468 469 /* 470 * directory name-value populating results 471 */ 472 typedef struct devname_rdr_result { 473 uint32_t ns_mapcount; 474 } devname_rdr_result_t; 475 476 /* 477 * sdev_nsrdr work 478 */ 479 typedef struct sdev_nsrdr_work { 480 char *dir_name; 481 char *dir_map; 482 struct sdev_node *dir_dv; 483 devname_rdr_result_t **result; 484 struct sdev_nsrdr_work *next; 485 } sdev_nsrdr_work_t; 486 487 488 /* 489 * boot states - warning, the ordering here is significant 490 * 491 * the difference between "system available" and "boot complete" 492 * is a debounce timeout to catch some daemon issuing a readdir 493 * triggering a nuisance implict reconfig on each boot. 494 */ 495 #define SDEV_BOOT_STATE_INITIAL 0 496 #define SDEV_BOOT_STATE_RECONFIG 1 /* reconfig */ 497 #define SDEV_BOOT_STATE_SYSAVAIL 2 /* system available */ 498 #define SDEV_BOOT_STATE_COMPLETE 3 /* boot complete */ 499 500 /* 501 * Negative cache list and list element 502 * The mutex protects the flags against multiple accesses and 503 * must only be acquired when already holding the r/w lock. 504 */ 505 typedef struct sdev_nc_list { 506 list_t ncl_list; /* the list itself */ 507 kmutex_t ncl_mutex; /* protects ncl_flags */ 508 krwlock_t ncl_lock; /* protects ncl_list */ 509 int ncl_flags; 510 int ncl_nentries; 511 } sdev_nc_list_t; 512 513 typedef struct sdev_nc_node { 514 char *ncn_name; /* name of the node */ 515 int ncn_flags; /* state information */ 516 int ncn_expirecnt; /* remove once expired */ 517 list_node_t ncn_link; /* link to next in list */ 518 } sdev_nc_node_t; 519 520 /* ncl_flags */ 521 #define NCL_LIST_DIRTY 0x01 /* needs to be flushed */ 522 #define NCL_LIST_WRITING 0x02 /* write in progress */ 523 #define NCL_LIST_WENABLE 0x04 /* write-enabled post boot */ 524 525 /* ncn_flags */ 526 #define NCN_ACTIVE 0x01 /* a lookup has occurred */ 527 #define NCN_SRC_STORE 0x02 /* src: persistent store */ 528 #define NCN_SRC_CURRENT 0x04 /* src: current boot */ 529 530 /* sdev_lookup_failed flags */ 531 #define SLF_NO_NCACHE 0x01 /* node should not be added to ncache */ 532 #define SLF_REBUILT 0x02 /* reconfig performed during lookup attempt */ 533 534 /* 535 * The nvlist name and nvpair identifiers in the 536 * /etc/devices/devname_cache nvlist format 537 */ 538 #define DP_DEVNAME_ID "devname" 539 #define DP_DEVNAME_NCACHE_ID "ncache" 540 #define DP_DEVNAME_NC_EXPIRECNT_ID "expire-counts" 541 542 /* devname-cache list element */ 543 typedef struct nvp_devname { 544 char **nvp_paths; 545 int *nvp_expirecnts; 546 int nvp_npaths; 547 list_node_t nvp_link; 548 } nvp_devname_t; 549 550 /* 551 * name service globals and prototypes 552 */ 553 554 extern struct devname_ops *devname_ns_ops; 555 extern int devname_nsmaps_loaded; 556 extern kmutex_t devname_nsmaps_lock; 557 558 extern void sdev_invalidate_nsmaps(void); 559 extern void sdev_validate_nsmaps(void); 560 extern int sdev_module_register(char *, struct devname_ops *); 561 extern struct devname_nsmap *sdev_get_nsmap_by_dir(char *, int); 562 extern struct devname_nsmap *sdev_get_nsmap_by_module(char *); 563 extern void sdev_dispatch_to_nsrdr_thread(struct sdev_node *, char *, 564 devname_rdr_result_t *); 565 extern void sdev_insert_nsmap(char *, char *, char *); 566 extern int devname_nsmap_lookup(devname_lkp_arg_t *, devname_lkp_result_t **); 567 extern struct devname_nsmap *sdev_get_map(struct sdev_node *, int); 568 extern int sdev_nsmaps_loaded(void); 569 extern void sdev_replace_nsmap(struct devname_nsmap *, char *, char *); 570 extern int sdev_nsmaps_reloaded(void); 571 extern int devname_get_dir_nsmap(devname_handle_t *, struct devname_nsmap **); 572 573 /* 574 * vnodeops and vfsops helpers 575 */ 576 577 typedef enum { 578 SDEV_CACHE_ADD = 0, 579 SDEV_CACHE_DELETE 580 } sdev_cache_ops_t; 581 582 extern struct sdev_node *sdev_cache_lookup(struct sdev_node *, char *); 583 extern int sdev_cache_update(struct sdev_node *, struct sdev_node **, char *, 584 sdev_cache_ops_t); 585 extern void sdev_node_cache_init(void); 586 extern void sdev_node_cache_fini(void); 587 extern struct sdev_node *sdev_mkroot(struct vfs *, dev_t, struct vnode *, 588 struct vnode *, struct cred *); 589 extern void sdev_filldir_dynamic(struct sdev_node *); 590 extern int sdev_mknode(struct sdev_node *, char *, struct sdev_node **, 591 struct vattr *, struct vnode *, void *, struct cred *, sdev_node_state_t); 592 extern int sdev_nodeinit(struct sdev_node *, char *, struct sdev_node **, 593 vattr_t *); 594 extern int sdev_nodeready(struct sdev_node *, vattr_t *, vnode_t *, void *, 595 cred_t *); 596 extern int sdev_shadow_node(struct sdev_node *, struct cred *); 597 extern void sdev_nodedestroy(struct sdev_node *, uint_t); 598 extern void sdev_update_timestamps(struct vnode *, cred_t *, uint_t); 599 extern void sdev_vattr_merge(struct sdev_node *, struct vattr *); 600 extern void sdev_devstate_change(void); 601 extern int sdev_lookup_filter(sdev_node_t *, char *); 602 extern void sdev_lookup_failed(sdev_node_t *, char *, int); 603 extern int sdev_unlocked_access(void *, int, struct cred *); 604 605 #define SDEV_ENFORCE 0x1 606 extern void sdev_stale(struct sdev_node *); 607 extern int sdev_cleandir(struct sdev_node *, char *, uint_t); 608 extern int sdev_rnmnode(struct sdev_node *, struct sdev_node *, 609 struct sdev_node *, struct sdev_node **, char *, struct cred *); 610 extern size_t add_dir_entry(dirent64_t *, char *, size_t, ino_t, offset_t); 611 extern int sdev_to_vp(struct sdev_node *, struct vnode **); 612 extern ino_t sdev_mkino(struct sdev_node *); 613 extern int devname_backstore_lookup(struct sdev_node *, char *, 614 struct vnode **); 615 extern int sdev_is_devfs_node(char *); 616 extern int sdev_copyin_mountargs(struct mounta *, struct sdev_mountargs *); 617 extern int sdev_reserve_subdirs(struct sdev_node *); 618 extern int prof_lookup(); 619 extern void prof_filldir(struct sdev_node *); 620 extern int devpts_validate(struct sdev_node *dv); 621 extern int devnet_validate(struct sdev_node *dv); 622 extern void *sdev_get_vtor(struct sdev_node *dv); 623 624 /* 625 * devinfo helpers 626 */ 627 extern int sdev_modctl_readdir(const char *, char ***, int *, int *); 628 extern void sdev_modctl_readdir_free(char **, int, int); 629 extern int sdev_modctl_devexists(const char *); 630 631 /* 632 * ncache handlers 633 */ 634 635 extern void sdev_ncache_init(void); 636 extern void sdev_ncache_setup(void); 637 extern void sdev_ncache_teardown(void); 638 extern void sdev_nc_addname(sdev_nc_list_t *, sdev_node_t *, char *, int); 639 extern void sdev_nc_node_exists(sdev_node_t *); 640 extern void sdev_nc_path_exists(sdev_nc_list_t *, char *); 641 extern void sdev_modctl_dump_files(void); 642 643 /* 644 * globals 645 */ 646 extern kmutex_t sdev_lock; 647 extern int devtype; 648 extern kmem_cache_t *sdev_node_cache; 649 extern struct vnodeops *sdev_vnodeops; 650 extern struct vnodeops *devpts_vnodeops; 651 extern struct vnodeops *devnet_vnodeops; 652 extern struct sdev_data *sdev_origins; /* mount info for global /dev instance */ 653 extern const fs_operation_def_t sdev_vnodeops_tbl[]; 654 extern const fs_operation_def_t devpts_vnodeops_tbl[]; 655 extern const fs_operation_def_t devnet_vnodeops_tbl[]; 656 extern const fs_operation_def_t devsys_vnodeops_tbl[]; 657 extern const fs_operation_def_t devpseudo_vnodeops_tbl[]; 658 659 extern sdev_nc_list_t *sdev_ncache; 660 extern int sdev_reconfig_boot; 661 extern int sdev_boot_state; 662 extern int sdev_reconfig_verbose; 663 extern int sdev_reconfig_disable; 664 extern int sdev_nc_disable; 665 extern int sdev_nc_disable_reset; 666 extern int sdev_nc_verbose; 667 668 /* 669 * misc. defines 670 */ 671 #ifdef DEBUG 672 extern int sdev_debug; 673 #define SDEV_DEBUG 0x01 /* error messages to console/log */ 674 #define SDEV_DEBUG_VOPS 0x02 /* vnode ops errors */ 675 #define SDEV_DEBUG_DLF 0x04 /* trace devname_lookup_func */ 676 #define SDEV_DEBUG_DRF 0x08 /* trace devname_readdir_func */ 677 #define SDEV_DEBUG_NCACHE 0x10 /* negative cache tracing */ 678 #define SDEV_DEBUG_DEVFSADMD 0x20 /* comm. of devnamefs & devfsadm */ 679 #define SDEV_DEBUG_PTS 0x40 /* /dev/pts tracing */ 680 #define SDEV_DEBUG_RECONFIG 0x80 /* events triggering reconfig */ 681 #define SDEV_DEBUG_SDEV_NODE 0x100 /* trace sdev_node activities */ 682 #define SDEV_DEBUG_PROFILE 0x200 /* trace sdev_profile */ 683 #define SDEV_DEBUG_MODCTL 0x400 /* trace modctl activity */ 684 #define SDEV_DEBUG_FLK 0x800 /* trace failed lookups */ 685 #define SDEV_DEBUG_NET 0x1000 /* /dev/net tracing */ 686 687 #define sdcmn_err(args) if (sdev_debug & SDEV_DEBUG) printf args 688 #define sdcmn_err2(args) if (sdev_debug & SDEV_DEBUG_VOPS) printf args 689 #define sdcmn_err3(args) if (sdev_debug & SDEV_DEBUG_DLF) printf args 690 #define sdcmn_err4(args) if (sdev_debug & SDEV_DEBUG_DRF) printf args 691 #define sdcmn_err5(args) if (sdev_debug & SDEV_DEBUG_NCACHE) printf args 692 #define sdcmn_err6(args) if (sdev_debug & SDEV_DEBUG_DEVFSADMD) printf args 693 #define sdcmn_err7(args) if (sdev_debug & SDEV_DEBUG_PTS) printf args 694 #define sdcmn_err8(args) if (sdev_debug & SDEV_DEBUG_RECONFIG) printf args 695 #define sdcmn_err9(args) if (sdev_debug & SDEV_DEBUG_SDEV_NODE) printf args 696 #define sdcmn_err10(args) if (sdev_debug & SDEV_DEBUG_PROFILE) printf args 697 #define sdcmn_err11(args) if (sdev_debug & SDEV_DEBUG_MODCTL) printf args 698 #define sdcmn_err12(args) if (sdev_debug & SDEV_DEBUG_NET) printf args 699 #define impossible(args) printf args 700 #else 701 #define sdcmn_err(args) /* does nothing */ 702 #define sdcmn_err2(args) /* does nothing */ 703 #define sdcmn_err3(args) /* does nothing */ 704 #define sdcmn_err4(args) /* does nothing */ 705 #define sdcmn_err5(args) /* does nothing */ 706 #define sdcmn_err6(args) /* does nothing */ 707 #define sdcmn_err7(args) /* does nothing */ 708 #define sdcmn_err8(args) /* does nothing */ 709 #define sdcmn_err9(args) /* does nothing */ 710 #define sdcmn_err10(args) /* does nothing */ 711 #define sdcmn_err11(args) /* does nothing */ 712 #define sdcmn_err12(args) /* does nothing */ 713 #define impossible(args) /* does nothing */ 714 #endif 715 716 #ifdef DEBUG 717 #define SD_TRACE_FAILED_LOOKUP(ddv, nm, retried) \ 718 if ((sdev_debug & SDEV_DEBUG_FLK) || \ 719 ((retried) && (sdev_debug & SDEV_DEBUG_RECONFIG))) { \ 720 printf("lookup of %s/%s by %s failed, line %d\n", \ 721 (ddv)->sdev_name, (nm), curproc->p_user.u_comm, \ 722 __LINE__); \ 723 } 724 #else 725 #define SD_TRACE_FAILED_LOOKUP(ddv, nm, retried) 726 #endif 727 728 #endif /* _KERNEL */ 729 730 #ifdef __cplusplus 731 } 732 #endif 733 734 #endif /* _SYS_SDEV_IMPL_H */ 735