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Be far more judicious in the use of curzone-using macros.
(Merge and extra asserts by danmcd.)
Try to remove assumption that zone's root vnode is marked VROOT
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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.
|
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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 /*
23 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 * Copyright 2014 Igor Kozhukhov <ikozhukhov@gmail.com>.
25 - * Copyright 2018 Joyent, Inc.
25 + * Copyright 2019 Joyent, Inc.
26 26 * Copyright 2019 Nexenta Systems, Inc. All rights reserved.
27 27 */
28 28
29 29 #ifndef _SYS_ZONE_H
30 30 #define _SYS_ZONE_H
31 31
32 32 #include <sys/types.h>
33 33 #include <sys/param.h>
34 34 #include <sys/tsol/label.h>
35 35 #include <sys/uadmin.h>
36 36 #include <netinet/in.h>
37 37
38 38 #ifdef _KERNEL
39 39 /*
40 40 * Many includes are kernel-only to reduce namespace pollution of
41 41 * userland applications.
42 42 */
43 43 #include <sys/mutex.h>
44 44 #include <sys/rctl.h>
45 45 #include <sys/ipc_rctl.h>
46 46 #include <sys/pset.h>
47 47 #include <sys/cred.h>
48 48 #include <sys/netstack.h>
49 49 #include <sys/ksynch.h>
50 50 #include <sys/socket_impl.h>
51 51 #include <sys/secflags.h>
52 52 #include <sys/cpu_uarray.h>
53 53 #include <sys/list.h>
54 54 #include <sys/loadavg.h>
55 55 #endif /* _KERNEL */
56 56
57 57 #ifdef __cplusplus
58 58 extern "C" {
59 59 #endif
60 60
61 61 /*
62 62 * NOTE
63 63 *
64 64 * The contents of this file are private to the implementation of
65 65 * Solaris and are subject to change at any time without notice.
66 66 * Applications and drivers using these interfaces may fail to
67 67 * run on future releases.
68 68 */
69 69
70 70 /* Available both in kernel and for user space */
71 71
72 72 /* zone id restrictions and special ids */
73 73 #define MAX_ZONEID 9999
74 74 #define MIN_USERZONEID 1 /* lowest user-creatable zone ID */
75 75 #define MIN_ZONEID 0 /* minimum zone ID on system */
76 76 #define GLOBAL_ZONEID 0
77 77 #define ZONEID_WIDTH 4 /* for printf */
78 78
79 79 /*
80 80 * Special zoneid_t token to refer to all zones.
81 81 */
82 82 #define ALL_ZONES (-1)
83 83
84 84 /* system call subcodes */
85 85 #define ZONE_CREATE 0
86 86 #define ZONE_DESTROY 1
87 87 #define ZONE_GETATTR 2
88 88 #define ZONE_ENTER 3
89 89 #define ZONE_LIST 4
90 90 #define ZONE_SHUTDOWN 5
91 91 #define ZONE_LOOKUP 6
92 92 #define ZONE_BOOT 7
93 93 #define ZONE_VERSION 8
94 94 #define ZONE_SETATTR 9
95 95 #define ZONE_ADD_DATALINK 10
96 96 #define ZONE_DEL_DATALINK 11
97 97 #define ZONE_CHECK_DATALINK 12
98 98 #define ZONE_LIST_DATALINK 13
99 99
100 100 /* zone attributes */
101 101 #define ZONE_ATTR_ROOT 1
102 102 #define ZONE_ATTR_NAME 2
103 103 #define ZONE_ATTR_STATUS 3
104 104 #define ZONE_ATTR_PRIVSET 4
105 105 #define ZONE_ATTR_UNIQID 5
106 106 #define ZONE_ATTR_POOLID 6
107 107 #define ZONE_ATTR_INITPID 7
108 108 #define ZONE_ATTR_SLBL 8
109 109 #define ZONE_ATTR_INITNAME 9
110 110 #define ZONE_ATTR_BOOTARGS 10
111 111 #define ZONE_ATTR_BRAND 11
112 112 #define ZONE_ATTR_PHYS_MCAP 12
113 113 #define ZONE_ATTR_SCHED_CLASS 13
114 114 #define ZONE_ATTR_FLAGS 14
115 115 #define ZONE_ATTR_HOSTID 15
116 116 #define ZONE_ATTR_FS_ALLOWED 16
117 117 #define ZONE_ATTR_NETWORK 17
118 118 #define ZONE_ATTR_INITNORESTART 20
119 119 #define ZONE_ATTR_SECFLAGS 21
120 120
121 121 /* Start of the brand-specific attribute namespace */
122 122 #define ZONE_ATTR_BRAND_ATTRS 32768
123 123
124 124 #define ZONE_FS_ALLOWED_MAX 1024
125 125
126 126 #define ZONE_EVENT_CHANNEL "com.sun:zones:status"
127 127 #define ZONE_EVENT_STATUS_CLASS "status"
128 128 #define ZONE_EVENT_STATUS_SUBCLASS "change"
129 129
130 130 #define ZONE_EVENT_UNINITIALIZED "uninitialized"
131 131 #define ZONE_EVENT_INITIALIZED "initialized"
132 132 #define ZONE_EVENT_READY "ready"
133 133 #define ZONE_EVENT_RUNNING "running"
134 134 #define ZONE_EVENT_SHUTTING_DOWN "shutting_down"
135 135
136 136 #define ZONE_CB_NAME "zonename"
137 137 #define ZONE_CB_NEWSTATE "newstate"
138 138 #define ZONE_CB_OLDSTATE "oldstate"
139 139 #define ZONE_CB_TIMESTAMP "when"
140 140 #define ZONE_CB_ZONEID "zoneid"
141 141
142 142 /*
143 143 * Exit values that may be returned by scripts or programs invoked by various
144 144 * zone commands.
145 145 *
146 146 * These are defined as:
147 147 *
148 148 * ZONE_SUBPROC_OK
149 149 * ===============
150 150 * The subprocess completed successfully.
151 151 *
152 152 * ZONE_SUBPROC_USAGE
153 153 * ==================
154 154 * The subprocess failed with a usage message, or a usage message should
155 155 * be output in its behalf.
156 156 *
157 157 * ZONE_SUBPROC_NOTCOMPLETE
158 158 * ========================
159 159 * The subprocess did not complete, but the actions performed by the
160 160 * subprocess require no recovery actions by the user.
161 161 *
162 162 * For example, if the subprocess were called by "zoneadm install," the
163 163 * installation of the zone did not succeed but the user need not perform
164 164 * a "zoneadm uninstall" before attempting another install.
165 165 *
166 166 * ZONE_SUBPROC_FATAL
167 167 * ==================
168 168 * The subprocess failed in a fatal manner, usually one that will require
169 169 * some type of recovery action by the user.
170 170 *
171 171 * For example, if the subprocess were called by "zoneadm install," the
172 172 * installation of the zone did not succeed and the user will need to
173 173 * perform a "zoneadm uninstall" before another install attempt is
174 174 * possible.
175 175 *
176 176 * The non-success exit values are large to avoid accidental collision
177 177 * with values used internally by some commands (e.g. "Z_ERR" and
178 178 * "Z_USAGE" as used by zoneadm.)
179 179 */
180 180 #define ZONE_SUBPROC_OK 0
181 181 #define ZONE_SUBPROC_USAGE 253
182 182 #define ZONE_SUBPROC_NOTCOMPLETE 254
183 183 #define ZONE_SUBPROC_FATAL 255
184 184
185 185 #ifdef _SYSCALL32
186 186 typedef struct {
187 187 caddr32_t zone_name;
188 188 caddr32_t zone_root;
189 189 caddr32_t zone_privs;
190 190 size32_t zone_privssz;
191 191 caddr32_t rctlbuf;
192 192 size32_t rctlbufsz;
193 193 caddr32_t extended_error;
194 194 caddr32_t zfsbuf;
195 195 size32_t zfsbufsz;
196 196 int match; /* match level */
197 197 uint32_t doi; /* DOI for label */
198 198 caddr32_t label; /* label associated with zone */
199 199 int flags;
200 200 } zone_def32;
201 201 #endif
202 202 typedef struct {
203 203 const char *zone_name;
204 204 const char *zone_root;
205 205 const struct priv_set *zone_privs;
206 206 size_t zone_privssz;
207 207 const char *rctlbuf;
208 208 size_t rctlbufsz;
209 209 int *extended_error;
210 210 const char *zfsbuf;
211 211 size_t zfsbufsz;
212 212 int match; /* match level */
213 213 uint32_t doi; /* DOI for label */
214 214 const bslabel_t *label; /* label associated with zone */
215 215 int flags;
216 216 } zone_def;
217 217
218 218 /* extended error information */
219 219 #define ZE_UNKNOWN 0 /* No extended error info */
220 220 #define ZE_CHROOTED 1 /* tried to zone_create from chroot */
221 221 #define ZE_AREMOUNTS 2 /* there are mounts within the zone */
222 222 #define ZE_LABELINUSE 3 /* label is already in use by some other zone */
223 223
224 224 /*
225 225 * zone_status values
226 226 *
227 227 * You must modify zone_status_names in mdb(1M)'s genunix module
228 228 * (genunix/zone.c) when you modify this enum.
229 229 */
230 230 typedef enum {
231 231 ZONE_IS_UNINITIALIZED = 0,
232 232 ZONE_IS_INITIALIZED,
233 233 ZONE_IS_READY,
234 234 ZONE_IS_BOOTING,
235 235 ZONE_IS_RUNNING,
236 236 ZONE_IS_SHUTTING_DOWN,
237 237 ZONE_IS_EMPTY,
238 238 ZONE_IS_DOWN,
239 239 ZONE_IS_DYING,
240 240 ZONE_IS_DEAD
241 241 } zone_status_t;
242 242 #define ZONE_MIN_STATE ZONE_IS_UNINITIALIZED
243 243 #define ZONE_MAX_STATE ZONE_IS_DEAD
244 244
245 245 /*
246 246 * Valid commands which may be issued by zoneadm to zoneadmd. The kernel also
247 247 * communicates with zoneadmd, but only uses Z_REBOOT and Z_HALT.
248 248 */
249 249 typedef enum zone_cmd {
250 250 Z_READY, Z_BOOT, Z_FORCEBOOT, Z_REBOOT, Z_HALT, Z_NOTE_UNINSTALLING,
251 251 Z_MOUNT, Z_FORCEMOUNT, Z_UNMOUNT, Z_SHUTDOWN
252 252 } zone_cmd_t;
253 253
254 254 /*
255 255 * The structure of a request to zoneadmd.
256 256 */
257 257 typedef struct zone_cmd_arg {
258 258 uint64_t uniqid; /* unique "generation number" */
259 259 zone_cmd_t cmd; /* requested action */
260 260 uint32_t _pad; /* need consistent 32/64 bit alignmt */
261 261 char locale[MAXPATHLEN]; /* locale in which to render messages */
262 262 char bootbuf[BOOTARGS_MAX]; /* arguments passed to zone_boot() */
263 263 } zone_cmd_arg_t;
264 264
265 265 /*
266 266 * Structure of zoneadmd's response to a request. A NULL return value means
267 267 * the caller should attempt to restart zoneadmd and retry.
268 268 */
269 269 typedef struct zone_cmd_rval {
270 270 int rval; /* return value of request */
271 271 char errbuf[1]; /* variable-sized buffer containing error messages */
272 272 } zone_cmd_rval_t;
273 273
274 274 /*
275 275 * The zone support infrastructure uses the zone name as a component
276 276 * of unix domain (AF_UNIX) sockets, which are limited to 108 characters
277 277 * in length, so ZONENAME_MAX is limited by that.
278 278 */
279 279 #define ZONENAME_MAX 64
280 280
281 281 #define GLOBAL_ZONENAME "global"
282 282
283 283 /*
284 284 * Extended Regular expression (see regex(5)) which matches all valid zone
285 285 * names.
286 286 */
287 287 #define ZONENAME_REGEXP "[a-zA-Z0-9][-_.a-zA-Z0-9]{0,62}"
288 288
289 289 /*
290 290 * Where the zones support infrastructure places temporary files.
291 291 */
292 292 #define ZONES_TMPDIR "/var/run/zones"
293 293
294 294 /*
295 295 * The path to the door used by clients to communicate with zoneadmd.
296 296 */
297 297 #define ZONE_DOOR_PATH ZONES_TMPDIR "/%s.zoneadmd_door"
298 298
299 299
300 300 /* zone_flags */
301 301 /*
302 302 * Threads that read or write the following flag must hold zone_lock.
303 303 */
304 304 #define ZF_REFCOUNTS_LOGGED 0x1 /* a thread logged the zone's refs */
305 305
306 306 /*
307 307 * The following threads are set when the zone is created and never changed.
308 308 * Threads that test for these flags don't have to hold zone_lock.
309 309 */
310 310 #define ZF_HASHED_LABEL 0x2 /* zone has a unique label */
311 311 #define ZF_IS_SCRATCH 0x4 /* scratch zone */
312 312 #define ZF_NET_EXCL 0x8 /* Zone has an exclusive IP stack */
313 313
314 314
315 315 /* zone_create flags */
316 316 #define ZCF_NET_EXCL 0x1 /* Create a zone with exclusive IP */
317 317
318 318 /* zone network properties */
319 319 #define ZONE_NETWORK_ADDRESS 1
320 320 #define ZONE_NETWORK_DEFROUTER 2
321 321
322 322 #define ZONE_NET_ADDRNAME "address"
323 323 #define ZONE_NET_RTRNAME "route"
324 324
325 325 typedef struct zone_net_data {
326 326 int zn_type;
327 327 int zn_len;
328 328 datalink_id_t zn_linkid;
329 329 uint8_t zn_val[1];
330 330 } zone_net_data_t;
331 331
332 332
333 333 #ifdef _KERNEL
334 334
335 335 #define GLOBAL_ZONEUNIQID 0 /* uniqid of the global zone */
336 336
337 337 /*
338 338 * Indexes into ->zone_ustate array, summing the micro state of all threads in a
339 339 * particular zone.
340 340 */
341 341 #define ZONE_USTATE_STIME (0)
342 342 #define ZONE_USTATE_UTIME (1)
343 343 #define ZONE_USTATE_WTIME (2)
344 344 #define ZONE_USTATE_MAX (3)
345 345
346 346 struct pool;
347 347 struct brand;
348 348
349 349 /*
350 350 * Each of these constants identifies a kernel subsystem that acquires and
351 351 * releases zone references. Each subsystem that invokes
352 352 * zone_hold_ref() and zone_rele_ref() should specify the
353 353 * zone_ref_subsys_t constant associated with the subsystem. Tracked holds
354 354 * help users and developers quickly identify subsystems that stall zone
355 355 * shutdowns indefinitely.
356 356 *
357 357 * NOTE: You must modify zone_ref_subsys_names in usr/src/uts/common/os/zone.c
358 358 * when you modify this enumeration.
359 359 */
360 360 typedef enum zone_ref_subsys {
361 361 ZONE_REF_NFS, /* NFS */
362 362 ZONE_REF_NFSV4, /* NFSv4 */
363 363 ZONE_REF_SMBFS, /* SMBFS */
364 364 ZONE_REF_MNTFS, /* MNTFS */
365 365 ZONE_REF_LOFI, /* LOFI devices */
366 366 ZONE_REF_VFS, /* VFS infrastructure */
367 367 ZONE_REF_IPC, /* IPC infrastructure */
368 368 ZONE_REF_NUM_SUBSYS /* This must be the last entry. */
369 369 } zone_ref_subsys_t;
370 370
371 371 /*
372 372 * zone_ref represents a general-purpose references to a zone. Each zone's
373 373 * references are linked into the zone's zone_t::zone_ref_list. This allows
374 374 * debuggers to walk zones' references.
375 375 */
376 376 typedef struct zone_ref {
377 377 struct zone *zref_zone; /* the zone to which the reference refers */
378 378 list_node_t zref_linkage; /* linkage for zone_t::zone_ref_list */
379 379 } zone_ref_t;
380 380
381 381 /*
382 382 * Structure to record list of ZFS datasets exported to a zone.
383 383 */
384 384 typedef struct zone_dataset {
385 385 char *zd_dataset;
386 386 list_node_t zd_linkage;
387 387 } zone_dataset_t;
388 388
389 389 /*
390 390 * structure for zone kstats
391 391 */
392 392 typedef struct zone_kstat {
393 393 kstat_named_t zk_zonename;
394 394 kstat_named_t zk_usage;
395 395 kstat_named_t zk_value;
396 396 } zone_kstat_t;
397 397
398 398 struct cpucap;
399 399
400 400 typedef struct {
401 401 kstat_named_t zm_zonename;
402 402 kstat_named_t zm_pgpgin;
403 403 kstat_named_t zm_anonpgin;
404 404 kstat_named_t zm_execpgin;
405 405 kstat_named_t zm_fspgin;
406 406 kstat_named_t zm_anon_alloc_fail;
407 407 } zone_mcap_kstat_t;
408 408
409 409 typedef struct {
410 410 kstat_named_t zm_zonename; /* full name, kstat truncates name */
411 411 kstat_named_t zm_utime;
412 412 kstat_named_t zm_stime;
413 413 kstat_named_t zm_wtime;
414 414 kstat_named_t zm_avenrun1;
415 415 kstat_named_t zm_avenrun5;
416 416 kstat_named_t zm_avenrun15;
417 417 kstat_named_t zm_ffcap;
418 418 kstat_named_t zm_ffnoproc;
419 419 kstat_named_t zm_ffnomem;
420 420 kstat_named_t zm_ffmisc;
421 421 kstat_named_t zm_nested_intp;
422 422 kstat_named_t zm_init_pid;
423 423 kstat_named_t zm_boot_time;
424 424 } zone_misc_kstat_t;
425 425
426 426 typedef struct zone {
427 427 /*
428 428 * zone_name is never modified once set.
429 429 */
430 430 char *zone_name; /* zone's configuration name */
431 431 /*
432 432 * zone_nodename and zone_domain are never freed once allocated.
433 433 */
434 434 char *zone_nodename; /* utsname.nodename equivalent */
435 435 char *zone_domain; /* srpc_domain equivalent */
436 436 /*
437 437 * zone_hostid is used for per-zone hostid emulation.
438 438 * Currently it isn't modified after it's set (so no locks protect
439 439 * accesses), but that might have to change when we allow
440 440 * administrators to change running zones' properties.
441 441 *
442 442 * The global zone's zone_hostid must always be HW_INVALID_HOSTID so
443 443 * that zone_get_hostid() will function correctly.
444 444 */
445 445 uint32_t zone_hostid; /* zone's hostid, HW_INVALID_HOSTID */
446 446 /* if not emulated */
447 447 /*
448 448 * zone_lock protects the following fields of a zone_t:
449 449 * zone_ref
450 450 * zone_cred_ref
451 451 * zone_subsys_ref
452 452 * zone_ref_list
453 453 * zone_ntasks
454 454 * zone_flags
455 455 * zone_zsd
456 456 * zone_pfexecd
457 457 */
458 458 kmutex_t zone_lock;
459 459 /*
460 460 * zone_linkage is the zone's linkage into the active or
461 461 * death-row list. The field is protected by zonehash_lock.
462 462 */
463 463 list_node_t zone_linkage;
464 464 zoneid_t zone_id; /* ID of zone */
465 465 uint_t zone_ref; /* count of zone_hold()s on zone */
466 466 uint_t zone_cred_ref; /* count of zone_hold_cred()s on zone */
467 467 /*
468 468 * Fixed-sized array of subsystem-specific reference counts
469 469 * The sum of all of the counts must be less than or equal to zone_ref.
470 470 * The array is indexed by the counts' subsystems' zone_ref_subsys_t
471 471 * constants.
472 472 */
473 473 uint_t zone_subsys_ref[ZONE_REF_NUM_SUBSYS];
474 474 list_t zone_ref_list; /* list of zone_ref_t structs */
475 475 /*
476 476 * zone_rootvp and zone_rootpath can never be modified once set.
477 477 */
478 478 struct vnode *zone_rootvp; /* zone's root vnode */
479 479 char *zone_rootpath; /* Path to zone's root + '/' */
480 480 ushort_t zone_flags; /* misc flags */
481 481 zone_status_t zone_status; /* protected by zone_status_lock */
482 482 uint_t zone_ntasks; /* number of tasks executing in zone */
483 483 kmutex_t zone_nlwps_lock; /* protects zone_nlwps, and *_nlwps */
484 484 /* counters in projects and tasks */
485 485 /* that are within the zone */
486 486 rctl_qty_t zone_nlwps; /* number of lwps in zone */
487 487 rctl_qty_t zone_nlwps_ctl; /* protected by zone_rctls->rcs_lock */
488 488 rctl_qty_t zone_shmmax; /* System V shared memory usage */
489 489 ipc_rqty_t zone_ipc; /* System V IPC id resource usage */
490 490
491 491 uint_t zone_rootpathlen; /* strlen(zone_rootpath) + 1 */
492 492 uint32_t zone_shares; /* FSS shares allocated to zone */
493 493 rctl_set_t *zone_rctls; /* zone-wide (zone.*) rctls */
494 494 kmutex_t zone_mem_lock; /* protects zone_locked_mem and */
495 495 /* kpd_locked_mem for all */
496 496 /* projects in zone. */
497 497 /* Also protects zone_max_swap */
498 498 /* grab after p_lock, before rcs_lock */
499 499 rctl_qty_t zone_locked_mem; /* bytes of locked memory in */
500 500 /* zone */
501 501 rctl_qty_t zone_locked_mem_ctl; /* Current locked memory */
502 502 /* limit. Protected by */
503 503 /* zone_rctls->rcs_lock */
504 504 rctl_qty_t zone_max_swap; /* bytes of swap reserved by zone */
505 505 rctl_qty_t zone_max_swap_ctl; /* current swap limit. */
506 506 /* Protected by */
507 507 /* zone_rctls->rcs_lock */
508 508 kmutex_t zone_rctl_lock; /* protects zone_max_lofi */
509 509 rctl_qty_t zone_max_lofi; /* lofi devs for zone */
510 510 rctl_qty_t zone_max_lofi_ctl; /* current lofi limit. */
511 511 /* Protected by */
512 512 /* zone_rctls->rcs_lock */
513 513 list_t zone_zsd; /* list of Zone-Specific Data values */
514 514 kcondvar_t zone_cv; /* used to signal state changes */
515 515 struct proc *zone_zsched; /* Dummy kernel "zsched" process */
516 516 pid_t zone_proc_initpid; /* pid of "init" for this zone */
517 517 char *zone_initname; /* fs path to 'init' */
518 518 int zone_boot_err; /* for zone_boot() if boot fails */
519 519 char *zone_bootargs; /* arguments passed via zone_boot() */
520 520 uint64_t zone_phys_mcap; /* physical memory cap */
521 521 /*
522 522 * zone_kthreads is protected by zone_status_lock.
523 523 */
524 524 kthread_t *zone_kthreads; /* kernel threads in zone */
525 525 struct priv_set *zone_privset; /* limit set for zone */
526 526 /*
527 527 * zone_vfslist is protected by vfs_list_lock().
528 528 */
529 529 struct vfs *zone_vfslist; /* list of FS's mounted in zone */
530 530 uint64_t zone_uniqid; /* unique zone generation number */
531 531 struct cred *zone_kcred; /* kcred-like, zone-limited cred */
532 532 /*
533 533 * zone_pool is protected by pool_lock().
534 534 */
535 535 struct pool *zone_pool; /* pool the zone is bound to */
536 536 hrtime_t zone_pool_mod; /* last pool bind modification time */
537 537 /* zone_psetid is protected by cpu_lock */
538 538 psetid_t zone_psetid; /* pset the zone is bound to */
539 539
540 540 time_t zone_boot_time; /* Similar to boot_time */
541 541
542 542 /*
543 543 * The following two can be read without holding any locks. They are
544 544 * updated under cpu_lock.
545 545 */
546 546 int zone_ncpus; /* zone's idea of ncpus */
547 547 int zone_ncpus_online; /* zone's idea of ncpus_online */
548 548 /*
549 549 * List of ZFS datasets exported to this zone.
550 550 */
551 551 list_t zone_datasets; /* list of datasets */
552 552
553 553 ts_label_t *zone_slabel; /* zone sensitivity label */
554 554 int zone_match; /* require label match for packets */
555 555 tsol_mlp_list_t zone_mlps; /* MLPs on zone-private addresses */
556 556
557 557 boolean_t zone_restart_init; /* Restart init if it dies? */
558 558 struct brand *zone_brand; /* zone's brand */
559 559 void *zone_brand_data; /* store brand specific data */
560 560 id_t zone_defaultcid; /* dflt scheduling class id */
561 561 kstat_t *zone_swapresv_kstat;
562 562 kstat_t *zone_lockedmem_kstat;
563 563 /*
564 564 * zone_dl_list is protected by zone_lock
565 565 */
566 566 list_t zone_dl_list;
567 567 netstack_t *zone_netstack;
568 568 struct cpucap *zone_cpucap; /* CPU caps data */
569 569 /*
570 570 * Solaris Auditing per-zone audit context
571 571 */
572 572 struct au_kcontext *zone_audit_kctxt;
573 573 /*
574 574 * For private use by mntfs.
575 575 */
576 576 struct mntelem *zone_mntfs_db;
577 577 krwlock_t zone_mntfs_db_lock;
578 578
579 579 struct klpd_reg *zone_pfexecd;
580 580
581 581 char *zone_fs_allowed;
582 582 rctl_qty_t zone_nprocs; /* number of processes in the zone */
583 583 rctl_qty_t zone_nprocs_ctl; /* current limit protected by */
584 584 /* zone_rctls->rcs_lock */
585 585 kstat_t *zone_nprocs_kstat;
586 586
587 587 kmutex_t zone_mcap_lock; /* protects mcap statistics */
588 588 kstat_t *zone_mcap_ksp;
589 589 zone_mcap_kstat_t *zone_mcap_stats;
590 590 uint64_t zone_pgpgin; /* pages paged in */
591 591 uint64_t zone_anonpgin; /* anon pages paged in */
592 592 uint64_t zone_execpgin; /* exec pages paged in */
593 593 uint64_t zone_fspgin; /* fs pages paged in */
594 594 uint64_t zone_anon_alloc_fail; /* cnt of anon alloc fails */
595 595
596 596 psecflags_t zone_secflags; /* default zone security-flags */
597 597
598 598 /*
599 599 * Misc. kstats and counters for zone cpu-usage aggregation.
600 600 */
601 601 kmutex_t zone_misc_lock; /* protects misc statistics */
602 602 kstat_t *zone_misc_ksp;
603 603 zone_misc_kstat_t *zone_misc_stats;
604 604 /* Accumulated microstate for all threads in this zone. */
605 605 cpu_uarray_t *zone_ustate;
606 606 /* fork-fail kstat tracking */
607 607 uint32_t zone_ffcap; /* hit an rctl cap */
608 608 uint32_t zone_ffnoproc; /* get proc/lwp error */
609 609 uint32_t zone_ffnomem; /* as_dup/memory error */
610 610 uint32_t zone_ffmisc; /* misc. other error */
611 611
612 612 uint32_t zone_nested_intp; /* nested interp. kstat */
613 613
614 614 struct loadavg_s zone_loadavg; /* loadavg for this zone */
615 615 uint64_t zone_hp_avenrun[3]; /* high-precision avenrun */
616 616 int zone_avenrun[3]; /* FSCALED avg. run queue len */
617 617
618 618 /*
619 619 * FSS stats updated once per second by fss_decay_usage.
620 620 */
621 621 uint32_t zone_fss_gen; /* FSS generation cntr */
622 622 uint64_t zone_run_ticks; /* tot # of ticks running */
623 623
624 624 /*
625 625 * DTrace-private per-zone state
626 626 */
627 627 int zone_dtrace_getf; /* # of unprivileged getf()s */
628 628
629 629 /*
630 630 * Synchronization primitives used to synchronize between mounts and
631 631 * zone creation/destruction.
632 632 */
633 633 int zone_mounts_in_progress;
634 634 kcondvar_t zone_mount_cv;
635 635 kmutex_t zone_mount_lock;
636 636 } zone_t;
637 637
638 638 /*
639 639 * Special value of zone_psetid to indicate that pools are disabled.
640 640 */
641 641 #define ZONE_PS_INVAL PS_MYID
642 642
643 643 extern zone_t zone0;
644 644 extern zone_t *global_zone;
645 645 extern uint_t maxzones;
646 646 extern rctl_hndl_t rc_zone_nlwps;
647 647 extern rctl_hndl_t rc_zone_nprocs;
648 648
649 649 extern long zone(int, void *, void *, void *, void *);
650 650 extern void zone_zsd_init(void);
651 651 extern void zone_init(void);
652 652 extern void zone_hold(zone_t *);
653 653 extern void zone_rele(zone_t *);
654 654 extern void zone_init_ref(zone_ref_t *);
655 655 extern void zone_hold_ref(zone_t *, zone_ref_t *, zone_ref_subsys_t);
656 656 extern void zone_rele_ref(zone_ref_t *, zone_ref_subsys_t);
657 657 extern void zone_cred_hold(zone_t *);
658 658 extern void zone_cred_rele(zone_t *);
659 659 extern void zone_task_hold(zone_t *);
660 660 extern void zone_task_rele(zone_t *);
661 661 extern zone_t *zone_find_by_id(zoneid_t);
662 662 extern zone_t *zone_find_by_label(const ts_label_t *);
663 663 extern zone_t *zone_find_by_name(char *);
664 664 extern zone_t *zone_find_by_any_path(const char *, boolean_t);
665 665 extern zone_t *zone_find_by_path(const char *);
666 666 extern zoneid_t getzoneid(void);
667 667 extern zone_t *zone_find_by_id_nolock(zoneid_t);
668 668 extern int zone_datalink_walk(zoneid_t, int (*)(datalink_id_t, void *), void *);
669 669 extern int zone_check_datalink(zoneid_t *, datalink_id_t);
670 670 extern void zone_loadavg_update();
671 671
672 672 /*
673 673 * Zone-specific data (ZSD) APIs
674 674 */
675 675 /*
676 676 * The following is what code should be initializing its zone_key_t to if it
677 677 * calls zone_getspecific() without necessarily knowing that zone_key_create()
678 678 * has been called on the key.
679 679 */
680 680 #define ZONE_KEY_UNINITIALIZED 0
681 681
682 682 typedef uint_t zone_key_t;
683 683
684 684 extern void zone_key_create(zone_key_t *, void *(*)(zoneid_t),
685 685 void (*)(zoneid_t, void *), void (*)(zoneid_t, void *));
686 686 extern int zone_key_delete(zone_key_t);
687 687 extern void *zone_getspecific(zone_key_t, zone_t *);
688 688 extern int zone_setspecific(zone_key_t, zone_t *, const void *);
689 689
690 690 /*
691 691 * The definition of a zsd_entry is truly private to zone.c and is only
692 692 * placed here so it can be shared with mdb.
693 693 *
694 694 * State maintained for each zone times each registered key, which tracks
695 695 * the state of the create, shutdown and destroy callbacks.
696 696 *
697 697 * zsd_flags is used to keep track of pending actions to avoid holding locks
698 698 * when calling the create/shutdown/destroy callbacks, since doing so
699 699 * could lead to deadlocks.
700 700 */
701 701 struct zsd_entry {
702 702 zone_key_t zsd_key; /* Key used to lookup value */
703 703 void *zsd_data; /* Caller-managed value */
704 704 /*
705 705 * Callbacks to be executed when a zone is created, shutdown, and
706 706 * destroyed, respectively.
707 707 */
708 708 void *(*zsd_create)(zoneid_t);
709 709 void (*zsd_shutdown)(zoneid_t, void *);
710 710 void (*zsd_destroy)(zoneid_t, void *);
711 711 list_node_t zsd_linkage;
712 712 uint16_t zsd_flags; /* See below */
713 713 kcondvar_t zsd_cv;
714 714 };
715 715
716 716 /*
717 717 * zsd_flags
718 718 */
719 719 #define ZSD_CREATE_NEEDED 0x0001
720 720 #define ZSD_CREATE_INPROGRESS 0x0002
721 721 #define ZSD_CREATE_COMPLETED 0x0004
722 722 #define ZSD_SHUTDOWN_NEEDED 0x0010
723 723 #define ZSD_SHUTDOWN_INPROGRESS 0x0020
724 724 #define ZSD_SHUTDOWN_COMPLETED 0x0040
725 725 #define ZSD_DESTROY_NEEDED 0x0100
726 726 #define ZSD_DESTROY_INPROGRESS 0x0200
727 727 #define ZSD_DESTROY_COMPLETED 0x0400
728 728
729 729 #define ZSD_CREATE_ALL \
730 730 (ZSD_CREATE_NEEDED|ZSD_CREATE_INPROGRESS|ZSD_CREATE_COMPLETED)
731 731 #define ZSD_SHUTDOWN_ALL \
732 732 (ZSD_SHUTDOWN_NEEDED|ZSD_SHUTDOWN_INPROGRESS|ZSD_SHUTDOWN_COMPLETED)
733 733 #define ZSD_DESTROY_ALL \
734 734 (ZSD_DESTROY_NEEDED|ZSD_DESTROY_INPROGRESS|ZSD_DESTROY_COMPLETED)
735 735
736 736 #define ZSD_ALL_INPROGRESS \
737 737 (ZSD_CREATE_INPROGRESS|ZSD_SHUTDOWN_INPROGRESS|ZSD_DESTROY_INPROGRESS)
738 738
739 739 /*
740 740 * Macros to help with zone visibility restrictions.
741 741 */
742 742
743 743 /*
744 744 * Is process in the global zone?
745 745 */
746 746 #define INGLOBALZONE(p) \
747 747 ((p)->p_zone == global_zone)
748 748
749 749 /*
750 750 * Can process view objects in given zone?
751 751 */
752 752 #define HASZONEACCESS(p, zoneid) \
753 753 ((p)->p_zone->zone_id == (zoneid) || INGLOBALZONE(p))
754 754
755 755 /*
756 756 * Convenience macro to see if a resolved path is visible from within a
757 757 * given zone.
758 758 *
759 759 * The basic idea is that the first (zone_rootpathlen - 1) bytes of the
760 760 * two strings must be equal. Since the rootpathlen has a trailing '/',
761 761 * we want to skip everything in the path up to (but not including) the
762 762 * trailing '/'.
763 763 */
764 764 #define ZONE_PATH_VISIBLE(path, zone) \
765 765 (strncmp((path), (zone)->zone_rootpath, \
766 766 (zone)->zone_rootpathlen - 1) == 0)
767 767
768 768 /*
769 769 * Convenience macro to go from the global view of a path to that seen
770 770 * from within said zone. It is the responsibility of the caller to
771 771 * ensure that the path is a resolved one (ie, no '..'s or '.'s), and is
772 772 * in fact visible from within the zone.
773 773 */
774 774 #define ZONE_PATH_TRANSLATE(path, zone) \
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775 775 (ASSERT(ZONE_PATH_VISIBLE(path, zone)), \
776 776 (path) + (zone)->zone_rootpathlen - 2)
777 777
778 778 /*
779 779 * Special processes visible in all zones.
780 780 */
781 781 #define ZONE_SPECIALPID(x) ((x) == 0 || (x) == 1)
782 782
783 783 /*
784 784 * A root vnode of the current zone.
785 + *
786 + * NOTE: It may be necessary (initialization time for file sharing where an
787 + * NGZ loads a file-sharing kernel module that does zsd initialization) to NOT
788 + * use this macro. One should ASSERT() that curzone == active ZSD (an
789 + * ASSERTion that's not always true at ZSD initialization time) during regular
790 + * use of this macro.
785 791 */
786 -#define ZONE_ROOTVP() (curproc->p_zone->zone_rootvp)
792 +#define ZONE_ROOTVP() (curzone->zone_rootvp)
787 793
788 794 /*
795 + * Since a zone's root isn't necessarily an actual filesystem boundary
796 + * (i.e. VROOT may not be set on zone->zone_rootvp) we need to not assume it.
797 + * This macro helps in checking if a vnode is the current zone's rootvp.
798 + * NOTE: Using the VN_ prefix, even though it's defined here in zone.h.
799 + * NOTE2: See above warning about ZONE_ROOTVP().
800 + */
801 +#define VN_IS_CURZONEROOT(vp) (VN_CMP(vp, ZONE_ROOTVP()))
802 +
803 +/*
789 804 * Zone-safe version of thread_create() to be used when the caller wants to
790 805 * create a kernel thread to run within the current zone's context.
791 806 */
792 807 extern kthread_t *zthread_create(caddr_t, size_t, void (*)(), void *, size_t,
793 808 pri_t);
794 809 extern void zthread_exit(void);
795 810
796 811 /*
797 812 * Functions for an external observer to register interest in a zone's status
798 813 * change. Observers will be woken up when the zone status equals the status
799 814 * argument passed in (in the case of zone_status_timedwait, the function may
800 815 * also return because of a timeout; zone_status_wait_sig may return early due
801 816 * to a signal being delivered; zone_status_timedwait_sig may return for any of
802 817 * the above reasons).
803 818 *
804 819 * Otherwise these behave identically to cv_timedwait(), cv_wait(), and
805 820 * cv_wait_sig() respectively.
806 821 */
807 822 extern clock_t zone_status_timedwait(zone_t *, clock_t, zone_status_t);
808 823 extern clock_t zone_status_timedwait_sig(zone_t *, clock_t, zone_status_t);
809 824 extern void zone_status_wait(zone_t *, zone_status_t);
810 825 extern int zone_status_wait_sig(zone_t *, zone_status_t);
811 826
812 827 /*
813 828 * Get the status of the zone (at the time it was called). The state may
814 829 * have progressed by the time it is returned.
815 830 */
816 831 extern zone_status_t zone_status_get(zone_t *);
817 832
818 833 /*
819 834 * Safely get the hostid of the specified zone (defaults to machine's hostid
820 835 * if the specified zone doesn't emulate a hostid). Passing NULL retrieves
821 836 * the global zone's (i.e., physical system's) hostid.
822 837 */
823 838 extern uint32_t zone_get_hostid(zone_t *);
824 839
825 840 /*
826 841 * Get the "kcred" credentials corresponding to the given zone.
827 842 */
828 843 extern struct cred *zone_get_kcred(zoneid_t);
829 844
830 845 /*
831 846 * Get/set the pool the zone is currently bound to.
832 847 */
833 848 extern struct pool *zone_pool_get(zone_t *);
834 849 extern void zone_pool_set(zone_t *, struct pool *);
835 850
836 851 /*
837 852 * Get/set the pset the zone is currently using.
838 853 */
839 854 extern psetid_t zone_pset_get(zone_t *);
840 855 extern void zone_pset_set(zone_t *, psetid_t);
841 856
842 857 /*
843 858 * Get the number of cpus/online-cpus visible from the given zone.
844 859 */
845 860 extern int zone_ncpus_get(zone_t *);
846 861 extern int zone_ncpus_online_get(zone_t *);
847 862
848 863 /*
849 864 * Returns true if the named pool/dataset is visible in the current zone.
850 865 */
851 866 extern int zone_dataset_visible(const char *, int *);
852 867
853 868 /*
854 869 * zone version of kadmin()
855 870 */
856 871 extern int zone_kadmin(int, int, const char *, cred_t *);
857 872 extern void zone_shutdown_global(void);
858 873
859 874 extern void mount_in_progress(zone_t *);
860 875 extern void mount_completed(zone_t *);
861 876
862 877 extern int zone_walk(int (*)(zone_t *, void *), void *);
863 878
864 879 extern rctl_hndl_t rc_zone_locked_mem;
865 880 extern rctl_hndl_t rc_zone_max_swap;
866 881 extern rctl_hndl_t rc_zone_max_lofi;
867 882
868 883 #endif /* _KERNEL */
869 884
870 885 #ifdef __cplusplus
871 886 }
872 887 #endif
873 888
874 889 #endif /* _SYS_ZONE_H */
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