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2915 DTrace in a zone should see "cpu", "curpsinfo", et al
2916 DTrace in a zone should be able to access fds[]
2917 DTrace in a zone should have limited provider access
Reviewed by: Joshua M. Clulow <josh@sysmgr.org>
Reviewed by: Adam Leventhal <ahl@delphix.com>
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--- old/usr/src/uts/common/sys/zone.h
+++ new/usr/src/uts/common/sys/zone.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 */
24 24
25 25 #ifndef _SYS_ZONE_H
26 26 #define _SYS_ZONE_H
27 27
28 28 #include <sys/types.h>
29 29 #include <sys/mutex.h>
30 30 #include <sys/param.h>
31 31 #include <sys/rctl.h>
32 32 #include <sys/ipc_rctl.h>
33 33 #include <sys/pset.h>
34 34 #include <sys/tsol/label.h>
35 35 #include <sys/cred.h>
36 36 #include <sys/netstack.h>
37 37 #include <sys/uadmin.h>
38 38 #include <sys/ksynch.h>
39 39 #include <sys/socket_impl.h>
40 40 #include <netinet/in.h>
41 41
42 42 #ifdef __cplusplus
43 43 extern "C" {
44 44 #endif
45 45
46 46 /*
47 47 * NOTE
48 48 *
49 49 * The contents of this file are private to the implementation of
50 50 * Solaris and are subject to change at any time without notice.
51 51 * Applications and drivers using these interfaces may fail to
52 52 * run on future releases.
53 53 */
54 54
55 55 /* Available both in kernel and for user space */
56 56
57 57 /* zone id restrictions and special ids */
58 58 #define MAX_ZONEID 9999
59 59 #define MIN_USERZONEID 1 /* lowest user-creatable zone ID */
60 60 #define MIN_ZONEID 0 /* minimum zone ID on system */
61 61 #define GLOBAL_ZONEID 0
62 62 #define ZONEID_WIDTH 4 /* for printf */
63 63
64 64 /*
65 65 * Special zoneid_t token to refer to all zones.
66 66 */
67 67 #define ALL_ZONES (-1)
68 68
69 69 /* system call subcodes */
70 70 #define ZONE_CREATE 0
71 71 #define ZONE_DESTROY 1
72 72 #define ZONE_GETATTR 2
73 73 #define ZONE_ENTER 3
74 74 #define ZONE_LIST 4
75 75 #define ZONE_SHUTDOWN 5
76 76 #define ZONE_LOOKUP 6
77 77 #define ZONE_BOOT 7
78 78 #define ZONE_VERSION 8
79 79 #define ZONE_SETATTR 9
80 80 #define ZONE_ADD_DATALINK 10
81 81 #define ZONE_DEL_DATALINK 11
82 82 #define ZONE_CHECK_DATALINK 12
83 83 #define ZONE_LIST_DATALINK 13
84 84
85 85 /* zone attributes */
86 86 #define ZONE_ATTR_ROOT 1
87 87 #define ZONE_ATTR_NAME 2
88 88 #define ZONE_ATTR_STATUS 3
89 89 #define ZONE_ATTR_PRIVSET 4
90 90 #define ZONE_ATTR_UNIQID 5
91 91 #define ZONE_ATTR_POOLID 6
92 92 #define ZONE_ATTR_INITPID 7
93 93 #define ZONE_ATTR_SLBL 8
94 94 #define ZONE_ATTR_INITNAME 9
95 95 #define ZONE_ATTR_BOOTARGS 10
96 96 #define ZONE_ATTR_BRAND 11
97 97 #define ZONE_ATTR_PHYS_MCAP 12
98 98 #define ZONE_ATTR_SCHED_CLASS 13
99 99 #define ZONE_ATTR_FLAGS 14
100 100 #define ZONE_ATTR_HOSTID 15
101 101 #define ZONE_ATTR_FS_ALLOWED 16
102 102 #define ZONE_ATTR_NETWORK 17
103 103
104 104 /* Start of the brand-specific attribute namespace */
105 105 #define ZONE_ATTR_BRAND_ATTRS 32768
106 106
107 107 #define ZONE_FS_ALLOWED_MAX 1024
108 108
109 109 #define ZONE_EVENT_CHANNEL "com.sun:zones:status"
110 110 #define ZONE_EVENT_STATUS_CLASS "status"
111 111 #define ZONE_EVENT_STATUS_SUBCLASS "change"
112 112
113 113 #define ZONE_EVENT_UNINITIALIZED "uninitialized"
114 114 #define ZONE_EVENT_INITIALIZED "initialized"
115 115 #define ZONE_EVENT_READY "ready"
116 116 #define ZONE_EVENT_RUNNING "running"
117 117 #define ZONE_EVENT_SHUTTING_DOWN "shutting_down"
118 118
119 119 #define ZONE_CB_NAME "zonename"
120 120 #define ZONE_CB_NEWSTATE "newstate"
121 121 #define ZONE_CB_OLDSTATE "oldstate"
122 122 #define ZONE_CB_TIMESTAMP "when"
123 123 #define ZONE_CB_ZONEID "zoneid"
124 124
125 125 /*
126 126 * Exit values that may be returned by scripts or programs invoked by various
127 127 * zone commands.
128 128 *
129 129 * These are defined as:
130 130 *
131 131 * ZONE_SUBPROC_OK
132 132 * ===============
133 133 * The subprocess completed successfully.
134 134 *
135 135 * ZONE_SUBPROC_USAGE
136 136 * ==================
137 137 * The subprocess failed with a usage message, or a usage message should
138 138 * be output in its behalf.
139 139 *
140 140 * ZONE_SUBPROC_NOTCOMPLETE
141 141 * ========================
142 142 * The subprocess did not complete, but the actions performed by the
143 143 * subprocess require no recovery actions by the user.
144 144 *
145 145 * For example, if the subprocess were called by "zoneadm install," the
146 146 * installation of the zone did not succeed but the user need not perform
147 147 * a "zoneadm uninstall" before attempting another install.
148 148 *
149 149 * ZONE_SUBPROC_FATAL
150 150 * ==================
151 151 * The subprocess failed in a fatal manner, usually one that will require
152 152 * some type of recovery action by the user.
153 153 *
154 154 * For example, if the subprocess were called by "zoneadm install," the
155 155 * installation of the zone did not succeed and the user will need to
156 156 * perform a "zoneadm uninstall" before another install attempt is
157 157 * possible.
158 158 *
159 159 * The non-success exit values are large to avoid accidental collision
160 160 * with values used internally by some commands (e.g. "Z_ERR" and
161 161 * "Z_USAGE" as used by zoneadm.)
162 162 */
163 163 #define ZONE_SUBPROC_OK 0
164 164 #define ZONE_SUBPROC_USAGE 253
165 165 #define ZONE_SUBPROC_NOTCOMPLETE 254
166 166 #define ZONE_SUBPROC_FATAL 255
167 167
168 168 #ifdef _SYSCALL32
169 169 typedef struct {
170 170 caddr32_t zone_name;
171 171 caddr32_t zone_root;
172 172 caddr32_t zone_privs;
173 173 size32_t zone_privssz;
174 174 caddr32_t rctlbuf;
175 175 size32_t rctlbufsz;
176 176 caddr32_t extended_error;
177 177 caddr32_t zfsbuf;
178 178 size32_t zfsbufsz;
179 179 int match; /* match level */
180 180 uint32_t doi; /* DOI for label */
181 181 caddr32_t label; /* label associated with zone */
182 182 int flags;
183 183 } zone_def32;
184 184 #endif
185 185 typedef struct {
186 186 const char *zone_name;
187 187 const char *zone_root;
188 188 const struct priv_set *zone_privs;
189 189 size_t zone_privssz;
190 190 const char *rctlbuf;
191 191 size_t rctlbufsz;
192 192 int *extended_error;
193 193 const char *zfsbuf;
194 194 size_t zfsbufsz;
195 195 int match; /* match level */
196 196 uint32_t doi; /* DOI for label */
197 197 const bslabel_t *label; /* label associated with zone */
198 198 int flags;
199 199 } zone_def;
200 200
201 201 /* extended error information */
202 202 #define ZE_UNKNOWN 0 /* No extended error info */
203 203 #define ZE_CHROOTED 1 /* tried to zone_create from chroot */
204 204 #define ZE_AREMOUNTS 2 /* there are mounts within the zone */
205 205 #define ZE_LABELINUSE 3 /* label is already in use by some other zone */
206 206
207 207 /*
208 208 * zone_status values
209 209 *
210 210 * You must modify zone_status_names in mdb(1M)'s genunix module
211 211 * (genunix/zone.c) when you modify this enum.
212 212 */
213 213 typedef enum {
214 214 ZONE_IS_UNINITIALIZED = 0,
215 215 ZONE_IS_INITIALIZED,
216 216 ZONE_IS_READY,
217 217 ZONE_IS_BOOTING,
218 218 ZONE_IS_RUNNING,
219 219 ZONE_IS_SHUTTING_DOWN,
220 220 ZONE_IS_EMPTY,
221 221 ZONE_IS_DOWN,
222 222 ZONE_IS_DYING,
223 223 ZONE_IS_DEAD
224 224 } zone_status_t;
225 225 #define ZONE_MIN_STATE ZONE_IS_UNINITIALIZED
226 226 #define ZONE_MAX_STATE ZONE_IS_DEAD
227 227
228 228 /*
229 229 * Valid commands which may be issued by zoneadm to zoneadmd. The kernel also
230 230 * communicates with zoneadmd, but only uses Z_REBOOT and Z_HALT.
231 231 */
232 232 typedef enum zone_cmd {
233 233 Z_READY, Z_BOOT, Z_FORCEBOOT, Z_REBOOT, Z_HALT, Z_NOTE_UNINSTALLING,
234 234 Z_MOUNT, Z_FORCEMOUNT, Z_UNMOUNT
235 235 } zone_cmd_t;
236 236
237 237 /*
238 238 * The structure of a request to zoneadmd.
239 239 */
240 240 typedef struct zone_cmd_arg {
241 241 uint64_t uniqid; /* unique "generation number" */
242 242 zone_cmd_t cmd; /* requested action */
243 243 uint32_t _pad; /* need consistent 32/64 bit alignmt */
244 244 char locale[MAXPATHLEN]; /* locale in which to render messages */
245 245 char bootbuf[BOOTARGS_MAX]; /* arguments passed to zone_boot() */
246 246 } zone_cmd_arg_t;
247 247
248 248 /*
249 249 * Structure of zoneadmd's response to a request. A NULL return value means
250 250 * the caller should attempt to restart zoneadmd and retry.
251 251 */
252 252 typedef struct zone_cmd_rval {
253 253 int rval; /* return value of request */
254 254 char errbuf[1]; /* variable-sized buffer containing error messages */
255 255 } zone_cmd_rval_t;
256 256
257 257 /*
258 258 * The zone support infrastructure uses the zone name as a component
259 259 * of unix domain (AF_UNIX) sockets, which are limited to 108 characters
260 260 * in length, so ZONENAME_MAX is limited by that.
261 261 */
262 262 #define ZONENAME_MAX 64
263 263
264 264 #define GLOBAL_ZONENAME "global"
265 265
266 266 /*
267 267 * Extended Regular expression (see regex(5)) which matches all valid zone
268 268 * names.
269 269 */
270 270 #define ZONENAME_REGEXP "[a-zA-Z0-9][-_.a-zA-Z0-9]{0,62}"
271 271
272 272 /*
273 273 * Where the zones support infrastructure places temporary files.
274 274 */
275 275 #define ZONES_TMPDIR "/var/run/zones"
276 276
277 277 /*
278 278 * The path to the door used by clients to communicate with zoneadmd.
279 279 */
280 280 #define ZONE_DOOR_PATH ZONES_TMPDIR "/%s.zoneadmd_door"
281 281
282 282
283 283 /* zone_flags */
284 284 /*
285 285 * Threads that read or write the following flag must hold zone_lock.
286 286 */
287 287 #define ZF_REFCOUNTS_LOGGED 0x1 /* a thread logged the zone's refs */
288 288
289 289 /*
290 290 * The following threads are set when the zone is created and never changed.
291 291 * Threads that test for these flags don't have to hold zone_lock.
292 292 */
293 293 #define ZF_HASHED_LABEL 0x2 /* zone has a unique label */
294 294 #define ZF_IS_SCRATCH 0x4 /* scratch zone */
295 295 #define ZF_NET_EXCL 0x8 /* Zone has an exclusive IP stack */
296 296
297 297
298 298 /* zone_create flags */
299 299 #define ZCF_NET_EXCL 0x1 /* Create a zone with exclusive IP */
300 300
301 301 /* zone network properties */
302 302 #define ZONE_NETWORK_ADDRESS 1
303 303 #define ZONE_NETWORK_DEFROUTER 2
304 304
305 305 #define ZONE_NET_ADDRNAME "address"
306 306 #define ZONE_NET_RTRNAME "route"
307 307
308 308 typedef struct zone_net_data {
309 309 int zn_type;
310 310 int zn_len;
311 311 datalink_id_t zn_linkid;
312 312 uint8_t zn_val[1];
313 313 } zone_net_data_t;
314 314
315 315
316 316 #ifdef _KERNEL
317 317
318 318 /*
319 319 * We need to protect the definition of 'list_t' from userland applications and
320 320 * libraries which may be defining ther own versions.
321 321 */
322 322 #include <sys/list.h>
323 323
324 324 #define GLOBAL_ZONEUNIQID 0 /* uniqid of the global zone */
325 325
326 326 struct pool;
327 327 struct brand;
328 328
329 329 /*
330 330 * Each of these constants identifies a kernel subsystem that acquires and
331 331 * releases zone references. Each subsystem that invokes
332 332 * zone_hold_ref() and zone_rele_ref() should specify the
333 333 * zone_ref_subsys_t constant associated with the subsystem. Tracked holds
334 334 * help users and developers quickly identify subsystems that stall zone
335 335 * shutdowns indefinitely.
336 336 *
337 337 * NOTE: You must modify zone_ref_subsys_names in usr/src/uts/common/os/zone.c
338 338 * when you modify this enumeration.
339 339 */
340 340 typedef enum zone_ref_subsys {
341 341 ZONE_REF_NFS, /* NFS */
342 342 ZONE_REF_NFSV4, /* NFSv4 */
343 343 ZONE_REF_SMBFS, /* SMBFS */
344 344 ZONE_REF_MNTFS, /* MNTFS */
345 345 ZONE_REF_LOFI, /* LOFI devices */
346 346 ZONE_REF_VFS, /* VFS infrastructure */
347 347 ZONE_REF_IPC, /* IPC infrastructure */
348 348 ZONE_REF_NUM_SUBSYS /* This must be the last entry. */
349 349 } zone_ref_subsys_t;
350 350
351 351 /*
352 352 * zone_ref represents a general-purpose references to a zone. Each zone's
353 353 * references are linked into the zone's zone_t::zone_ref_list. This allows
354 354 * debuggers to walk zones' references.
355 355 */
356 356 typedef struct zone_ref {
357 357 struct zone *zref_zone; /* the zone to which the reference refers */
358 358 list_node_t zref_linkage; /* linkage for zone_t::zone_ref_list */
359 359 } zone_ref_t;
360 360
361 361 /*
362 362 * Structure to record list of ZFS datasets exported to a zone.
363 363 */
364 364 typedef struct zone_dataset {
365 365 char *zd_dataset;
366 366 list_node_t zd_linkage;
367 367 } zone_dataset_t;
368 368
369 369 /*
370 370 * structure for zone kstats
371 371 */
372 372 typedef struct zone_kstat {
373 373 kstat_named_t zk_zonename;
374 374 kstat_named_t zk_usage;
375 375 kstat_named_t zk_value;
376 376 } zone_kstat_t;
377 377
378 378 struct cpucap;
379 379
380 380 typedef struct zone {
381 381 /*
382 382 * zone_name is never modified once set.
383 383 */
384 384 char *zone_name; /* zone's configuration name */
385 385 /*
386 386 * zone_nodename and zone_domain are never freed once allocated.
387 387 */
388 388 char *zone_nodename; /* utsname.nodename equivalent */
389 389 char *zone_domain; /* srpc_domain equivalent */
390 390 /*
391 391 * zone_hostid is used for per-zone hostid emulation.
392 392 * Currently it isn't modified after it's set (so no locks protect
393 393 * accesses), but that might have to change when we allow
394 394 * administrators to change running zones' properties.
395 395 *
396 396 * The global zone's zone_hostid must always be HW_INVALID_HOSTID so
397 397 * that zone_get_hostid() will function correctly.
398 398 */
399 399 uint32_t zone_hostid; /* zone's hostid, HW_INVALID_HOSTID */
400 400 /* if not emulated */
401 401 /*
402 402 * zone_lock protects the following fields of a zone_t:
403 403 * zone_ref
404 404 * zone_cred_ref
405 405 * zone_subsys_ref
406 406 * zone_ref_list
407 407 * zone_ntasks
408 408 * zone_flags
409 409 * zone_zsd
410 410 * zone_pfexecd
411 411 */
412 412 kmutex_t zone_lock;
413 413 /*
414 414 * zone_linkage is the zone's linkage into the active or
415 415 * death-row list. The field is protected by zonehash_lock.
416 416 */
417 417 list_node_t zone_linkage;
418 418 zoneid_t zone_id; /* ID of zone */
419 419 uint_t zone_ref; /* count of zone_hold()s on zone */
420 420 uint_t zone_cred_ref; /* count of zone_hold_cred()s on zone */
421 421 /*
422 422 * Fixed-sized array of subsystem-specific reference counts
423 423 * The sum of all of the counts must be less than or equal to zone_ref.
424 424 * The array is indexed by the counts' subsystems' zone_ref_subsys_t
425 425 * constants.
426 426 */
427 427 uint_t zone_subsys_ref[ZONE_REF_NUM_SUBSYS];
428 428 list_t zone_ref_list; /* list of zone_ref_t structs */
429 429 /*
430 430 * zone_rootvp and zone_rootpath can never be modified once set.
431 431 */
432 432 struct vnode *zone_rootvp; /* zone's root vnode */
433 433 char *zone_rootpath; /* Path to zone's root + '/' */
434 434 ushort_t zone_flags; /* misc flags */
435 435 zone_status_t zone_status; /* protected by zone_status_lock */
436 436 uint_t zone_ntasks; /* number of tasks executing in zone */
437 437 kmutex_t zone_nlwps_lock; /* protects zone_nlwps, and *_nlwps */
438 438 /* counters in projects and tasks */
439 439 /* that are within the zone */
440 440 rctl_qty_t zone_nlwps; /* number of lwps in zone */
441 441 rctl_qty_t zone_nlwps_ctl; /* protected by zone_rctls->rcs_lock */
442 442 rctl_qty_t zone_shmmax; /* System V shared memory usage */
443 443 ipc_rqty_t zone_ipc; /* System V IPC id resource usage */
444 444
445 445 uint_t zone_rootpathlen; /* strlen(zone_rootpath) + 1 */
446 446 uint32_t zone_shares; /* FSS shares allocated to zone */
447 447 rctl_set_t *zone_rctls; /* zone-wide (zone.*) rctls */
448 448 kmutex_t zone_mem_lock; /* protects zone_locked_mem and */
449 449 /* kpd_locked_mem for all */
450 450 /* projects in zone. */
451 451 /* Also protects zone_max_swap */
452 452 /* grab after p_lock, before rcs_lock */
453 453 rctl_qty_t zone_locked_mem; /* bytes of locked memory in */
454 454 /* zone */
455 455 rctl_qty_t zone_locked_mem_ctl; /* Current locked memory */
456 456 /* limit. Protected by */
457 457 /* zone_rctls->rcs_lock */
458 458 rctl_qty_t zone_max_swap; /* bytes of swap reserved by zone */
459 459 rctl_qty_t zone_max_swap_ctl; /* current swap limit. */
460 460 /* Protected by */
461 461 /* zone_rctls->rcs_lock */
462 462 kmutex_t zone_rctl_lock; /* protects zone_max_lofi */
463 463 rctl_qty_t zone_max_lofi; /* lofi devs for zone */
464 464 rctl_qty_t zone_max_lofi_ctl; /* current lofi limit. */
465 465 /* Protected by */
466 466 /* zone_rctls->rcs_lock */
467 467 list_t zone_zsd; /* list of Zone-Specific Data values */
468 468 kcondvar_t zone_cv; /* used to signal state changes */
469 469 struct proc *zone_zsched; /* Dummy kernel "zsched" process */
470 470 pid_t zone_proc_initpid; /* pid of "init" for this zone */
471 471 char *zone_initname; /* fs path to 'init' */
472 472 int zone_boot_err; /* for zone_boot() if boot fails */
473 473 char *zone_bootargs; /* arguments passed via zone_boot() */
474 474 uint64_t zone_phys_mcap; /* physical memory cap */
475 475 /*
476 476 * zone_kthreads is protected by zone_status_lock.
477 477 */
478 478 kthread_t *zone_kthreads; /* kernel threads in zone */
479 479 struct priv_set *zone_privset; /* limit set for zone */
480 480 /*
481 481 * zone_vfslist is protected by vfs_list_lock().
482 482 */
483 483 struct vfs *zone_vfslist; /* list of FS's mounted in zone */
484 484 uint64_t zone_uniqid; /* unique zone generation number */
485 485 struct cred *zone_kcred; /* kcred-like, zone-limited cred */
486 486 /*
487 487 * zone_pool is protected by pool_lock().
488 488 */
489 489 struct pool *zone_pool; /* pool the zone is bound to */
490 490 hrtime_t zone_pool_mod; /* last pool bind modification time */
491 491 /* zone_psetid is protected by cpu_lock */
492 492 psetid_t zone_psetid; /* pset the zone is bound to */
493 493
494 494 time_t zone_boot_time; /* Similar to boot_time */
495 495
496 496 /*
497 497 * The following two can be read without holding any locks. They are
498 498 * updated under cpu_lock.
499 499 */
500 500 int zone_ncpus; /* zone's idea of ncpus */
501 501 int zone_ncpus_online; /* zone's idea of ncpus_online */
502 502 /*
503 503 * List of ZFS datasets exported to this zone.
504 504 */
505 505 list_t zone_datasets; /* list of datasets */
506 506
507 507 ts_label_t *zone_slabel; /* zone sensitivity label */
508 508 int zone_match; /* require label match for packets */
509 509 tsol_mlp_list_t zone_mlps; /* MLPs on zone-private addresses */
510 510
511 511 boolean_t zone_restart_init; /* Restart init if it dies? */
512 512 struct brand *zone_brand; /* zone's brand */
513 513 void *zone_brand_data; /* store brand specific data */
514 514 id_t zone_defaultcid; /* dflt scheduling class id */
515 515 kstat_t *zone_swapresv_kstat;
516 516 kstat_t *zone_lockedmem_kstat;
517 517 /*
518 518 * zone_dl_list is protected by zone_lock
519 519 */
520 520 list_t zone_dl_list;
521 521 netstack_t *zone_netstack;
522 522 struct cpucap *zone_cpucap; /* CPU caps data */
523 523 /*
524 524 * Solaris Auditing per-zone audit context
525 525 */
526 526 struct au_kcontext *zone_audit_kctxt;
527 527 /*
528 528 * For private use by mntfs.
529 529 */
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530 530 struct mntelem *zone_mntfs_db;
531 531 krwlock_t zone_mntfs_db_lock;
532 532
533 533 struct klpd_reg *zone_pfexecd;
534 534
535 535 char *zone_fs_allowed;
536 536 rctl_qty_t zone_nprocs; /* number of processes in the zone */
537 537 rctl_qty_t zone_nprocs_ctl; /* current limit protected by */
538 538 /* zone_rctls->rcs_lock */
539 539 kstat_t *zone_nprocs_kstat;
540 +
541 + /*
542 + * DTrace-private per-zone state
543 + */
544 + int zone_dtrace_getf; /* # of unprivileged getf()s */
540 545 } zone_t;
541 546
542 547 /*
543 548 * Special value of zone_psetid to indicate that pools are disabled.
544 549 */
545 550 #define ZONE_PS_INVAL PS_MYID
546 551
547 552
548 553 extern zone_t zone0;
549 554 extern zone_t *global_zone;
550 555 extern uint_t maxzones;
551 556 extern rctl_hndl_t rc_zone_nlwps;
552 557 extern rctl_hndl_t rc_zone_nprocs;
553 558
554 559 extern long zone(int, void *, void *, void *, void *);
555 560 extern void zone_zsd_init(void);
556 561 extern void zone_init(void);
557 562 extern void zone_hold(zone_t *);
558 563 extern void zone_rele(zone_t *);
559 564 extern void zone_init_ref(zone_ref_t *);
560 565 extern void zone_hold_ref(zone_t *, zone_ref_t *, zone_ref_subsys_t);
561 566 extern void zone_rele_ref(zone_ref_t *, zone_ref_subsys_t);
562 567 extern void zone_cred_hold(zone_t *);
563 568 extern void zone_cred_rele(zone_t *);
564 569 extern void zone_task_hold(zone_t *);
565 570 extern void zone_task_rele(zone_t *);
566 571 extern zone_t *zone_find_by_id(zoneid_t);
567 572 extern zone_t *zone_find_by_label(const ts_label_t *);
568 573 extern zone_t *zone_find_by_name(char *);
569 574 extern zone_t *zone_find_by_any_path(const char *, boolean_t);
570 575 extern zone_t *zone_find_by_path(const char *);
571 576 extern zoneid_t getzoneid(void);
572 577 extern zone_t *zone_find_by_id_nolock(zoneid_t);
573 578 extern int zone_datalink_walk(zoneid_t, int (*)(datalink_id_t, void *), void *);
574 579 extern int zone_check_datalink(zoneid_t *, datalink_id_t);
575 580
576 581 /*
577 582 * Zone-specific data (ZSD) APIs
578 583 */
579 584 /*
580 585 * The following is what code should be initializing its zone_key_t to if it
581 586 * calls zone_getspecific() without necessarily knowing that zone_key_create()
582 587 * has been called on the key.
583 588 */
584 589 #define ZONE_KEY_UNINITIALIZED 0
585 590
586 591 typedef uint_t zone_key_t;
587 592
588 593 extern void zone_key_create(zone_key_t *, void *(*)(zoneid_t),
589 594 void (*)(zoneid_t, void *), void (*)(zoneid_t, void *));
590 595 extern int zone_key_delete(zone_key_t);
591 596 extern void *zone_getspecific(zone_key_t, zone_t *);
592 597 extern int zone_setspecific(zone_key_t, zone_t *, const void *);
593 598
594 599 /*
595 600 * The definition of a zsd_entry is truly private to zone.c and is only
596 601 * placed here so it can be shared with mdb.
597 602 *
598 603 * State maintained for each zone times each registered key, which tracks
599 604 * the state of the create, shutdown and destroy callbacks.
600 605 *
601 606 * zsd_flags is used to keep track of pending actions to avoid holding locks
602 607 * when calling the create/shutdown/destroy callbacks, since doing so
603 608 * could lead to deadlocks.
604 609 */
605 610 struct zsd_entry {
606 611 zone_key_t zsd_key; /* Key used to lookup value */
607 612 void *zsd_data; /* Caller-managed value */
608 613 /*
609 614 * Callbacks to be executed when a zone is created, shutdown, and
610 615 * destroyed, respectively.
611 616 */
612 617 void *(*zsd_create)(zoneid_t);
613 618 void (*zsd_shutdown)(zoneid_t, void *);
614 619 void (*zsd_destroy)(zoneid_t, void *);
615 620 list_node_t zsd_linkage;
616 621 uint16_t zsd_flags; /* See below */
617 622 kcondvar_t zsd_cv;
618 623 };
619 624
620 625 /*
621 626 * zsd_flags
622 627 */
623 628 #define ZSD_CREATE_NEEDED 0x0001
624 629 #define ZSD_CREATE_INPROGRESS 0x0002
625 630 #define ZSD_CREATE_COMPLETED 0x0004
626 631 #define ZSD_SHUTDOWN_NEEDED 0x0010
627 632 #define ZSD_SHUTDOWN_INPROGRESS 0x0020
628 633 #define ZSD_SHUTDOWN_COMPLETED 0x0040
629 634 #define ZSD_DESTROY_NEEDED 0x0100
630 635 #define ZSD_DESTROY_INPROGRESS 0x0200
631 636 #define ZSD_DESTROY_COMPLETED 0x0400
632 637
633 638 #define ZSD_CREATE_ALL \
634 639 (ZSD_CREATE_NEEDED|ZSD_CREATE_INPROGRESS|ZSD_CREATE_COMPLETED)
635 640 #define ZSD_SHUTDOWN_ALL \
636 641 (ZSD_SHUTDOWN_NEEDED|ZSD_SHUTDOWN_INPROGRESS|ZSD_SHUTDOWN_COMPLETED)
637 642 #define ZSD_DESTROY_ALL \
638 643 (ZSD_DESTROY_NEEDED|ZSD_DESTROY_INPROGRESS|ZSD_DESTROY_COMPLETED)
639 644
640 645 #define ZSD_ALL_INPROGRESS \
641 646 (ZSD_CREATE_INPROGRESS|ZSD_SHUTDOWN_INPROGRESS|ZSD_DESTROY_INPROGRESS)
642 647
643 648 /*
644 649 * Macros to help with zone visibility restrictions.
645 650 */
646 651
647 652 /*
648 653 * Is process in the global zone?
649 654 */
650 655 #define INGLOBALZONE(p) \
651 656 ((p)->p_zone == global_zone)
652 657
653 658 /*
654 659 * Can process view objects in given zone?
655 660 */
656 661 #define HASZONEACCESS(p, zoneid) \
657 662 ((p)->p_zone->zone_id == (zoneid) || INGLOBALZONE(p))
658 663
659 664 /*
660 665 * Convenience macro to see if a resolved path is visible from within a
661 666 * given zone.
662 667 *
663 668 * The basic idea is that the first (zone_rootpathlen - 1) bytes of the
664 669 * two strings must be equal. Since the rootpathlen has a trailing '/',
665 670 * we want to skip everything in the path up to (but not including) the
666 671 * trailing '/'.
667 672 */
668 673 #define ZONE_PATH_VISIBLE(path, zone) \
669 674 (strncmp((path), (zone)->zone_rootpath, \
670 675 (zone)->zone_rootpathlen - 1) == 0)
671 676
672 677 /*
673 678 * Convenience macro to go from the global view of a path to that seen
674 679 * from within said zone. It is the responsibility of the caller to
675 680 * ensure that the path is a resolved one (ie, no '..'s or '.'s), and is
676 681 * in fact visible from within the zone.
677 682 */
678 683 #define ZONE_PATH_TRANSLATE(path, zone) \
679 684 (ASSERT(ZONE_PATH_VISIBLE(path, zone)), \
680 685 (path) + (zone)->zone_rootpathlen - 2)
681 686
682 687 /*
683 688 * Special processes visible in all zones.
684 689 */
685 690 #define ZONE_SPECIALPID(x) ((x) == 0 || (x) == 1)
686 691
687 692 /*
688 693 * Zone-safe version of thread_create() to be used when the caller wants to
689 694 * create a kernel thread to run within the current zone's context.
690 695 */
691 696 extern kthread_t *zthread_create(caddr_t, size_t, void (*)(), void *, size_t,
692 697 pri_t);
693 698 extern void zthread_exit(void);
694 699
695 700 /*
696 701 * Functions for an external observer to register interest in a zone's status
697 702 * change. Observers will be woken up when the zone status equals the status
698 703 * argument passed in (in the case of zone_status_timedwait, the function may
699 704 * also return because of a timeout; zone_status_wait_sig may return early due
700 705 * to a signal being delivered; zone_status_timedwait_sig may return for any of
701 706 * the above reasons).
702 707 *
703 708 * Otherwise these behave identically to cv_timedwait(), cv_wait(), and
704 709 * cv_wait_sig() respectively.
705 710 */
706 711 extern clock_t zone_status_timedwait(zone_t *, clock_t, zone_status_t);
707 712 extern clock_t zone_status_timedwait_sig(zone_t *, clock_t, zone_status_t);
708 713 extern void zone_status_wait(zone_t *, zone_status_t);
709 714 extern int zone_status_wait_sig(zone_t *, zone_status_t);
710 715
711 716 /*
712 717 * Get the status of the zone (at the time it was called). The state may
713 718 * have progressed by the time it is returned.
714 719 */
715 720 extern zone_status_t zone_status_get(zone_t *);
716 721
717 722 /*
718 723 * Safely get the hostid of the specified zone (defaults to machine's hostid
719 724 * if the specified zone doesn't emulate a hostid). Passing NULL retrieves
720 725 * the global zone's (i.e., physical system's) hostid.
721 726 */
722 727 extern uint32_t zone_get_hostid(zone_t *);
723 728
724 729 /*
725 730 * Get the "kcred" credentials corresponding to the given zone.
726 731 */
727 732 extern struct cred *zone_get_kcred(zoneid_t);
728 733
729 734 /*
730 735 * Get/set the pool the zone is currently bound to.
731 736 */
732 737 extern struct pool *zone_pool_get(zone_t *);
733 738 extern void zone_pool_set(zone_t *, struct pool *);
734 739
735 740 /*
736 741 * Get/set the pset the zone is currently using.
737 742 */
738 743 extern psetid_t zone_pset_get(zone_t *);
739 744 extern void zone_pset_set(zone_t *, psetid_t);
740 745
741 746 /*
742 747 * Get the number of cpus/online-cpus visible from the given zone.
743 748 */
744 749 extern int zone_ncpus_get(zone_t *);
745 750 extern int zone_ncpus_online_get(zone_t *);
746 751
747 752 /*
748 753 * Returns true if the named pool/dataset is visible in the current zone.
749 754 */
750 755 extern int zone_dataset_visible(const char *, int *);
751 756
752 757 /*
753 758 * zone version of kadmin()
754 759 */
755 760 extern int zone_kadmin(int, int, const char *, cred_t *);
756 761 extern void zone_shutdown_global(void);
757 762
758 763 extern void mount_in_progress(void);
759 764 extern void mount_completed(void);
760 765
761 766 extern int zone_walk(int (*)(zone_t *, void *), void *);
762 767
763 768 extern rctl_hndl_t rc_zone_locked_mem;
764 769 extern rctl_hndl_t rc_zone_max_swap;
765 770 extern rctl_hndl_t rc_zone_max_lofi;
766 771
767 772 #endif /* _KERNEL */
768 773
769 774 #ifdef __cplusplus
770 775 }
771 776 #endif
772 777
773 778 #endif /* _SYS_ZONE_H */
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