17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 545916cd2Sjpk * Common Development and Distribution License (the "License"). 645916cd2Sjpk * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 2197eda132Sraf 227c478bd9Sstevel@tonic-gate /* 236f70df68Sdp * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate /* 307c478bd9Sstevel@tonic-gate * Zones 317c478bd9Sstevel@tonic-gate * 327c478bd9Sstevel@tonic-gate * A zone is a named collection of processes, namespace constraints, 337c478bd9Sstevel@tonic-gate * and other system resources which comprise a secure and manageable 347c478bd9Sstevel@tonic-gate * application containment facility. 357c478bd9Sstevel@tonic-gate * 367c478bd9Sstevel@tonic-gate * Zones (represented by the reference counted zone_t) are tracked in 377c478bd9Sstevel@tonic-gate * the kernel in the zonehash. Elsewhere in the kernel, Zone IDs 387c478bd9Sstevel@tonic-gate * (zoneid_t) are used to track zone association. Zone IDs are 397c478bd9Sstevel@tonic-gate * dynamically generated when the zone is created; if a persistent 407c478bd9Sstevel@tonic-gate * identifier is needed (core files, accounting logs, audit trail, 417c478bd9Sstevel@tonic-gate * etc.), the zone name should be used. 427c478bd9Sstevel@tonic-gate * 437c478bd9Sstevel@tonic-gate * 447c478bd9Sstevel@tonic-gate * Global Zone: 457c478bd9Sstevel@tonic-gate * 467c478bd9Sstevel@tonic-gate * The global zone (zoneid 0) is automatically associated with all 477c478bd9Sstevel@tonic-gate * system resources that have not been bound to a user-created zone. 487c478bd9Sstevel@tonic-gate * This means that even systems where zones are not in active use 497c478bd9Sstevel@tonic-gate * have a global zone, and all processes, mounts, etc. are 507c478bd9Sstevel@tonic-gate * associated with that zone. The global zone is generally 517c478bd9Sstevel@tonic-gate * unconstrained in terms of privileges and access, though the usual 527c478bd9Sstevel@tonic-gate * credential and privilege based restrictions apply. 537c478bd9Sstevel@tonic-gate * 547c478bd9Sstevel@tonic-gate * 557c478bd9Sstevel@tonic-gate * Zone States: 567c478bd9Sstevel@tonic-gate * 577c478bd9Sstevel@tonic-gate * The states in which a zone may be in and the transitions are as 587c478bd9Sstevel@tonic-gate * follows: 597c478bd9Sstevel@tonic-gate * 607c478bd9Sstevel@tonic-gate * ZONE_IS_UNINITIALIZED: primordial state for a zone. The partially 617c478bd9Sstevel@tonic-gate * initialized zone is added to the list of active zones on the system but 627c478bd9Sstevel@tonic-gate * isn't accessible. 637c478bd9Sstevel@tonic-gate * 647c478bd9Sstevel@tonic-gate * ZONE_IS_READY: zsched (the kernel dummy process for a zone) is 657c478bd9Sstevel@tonic-gate * ready. The zone is made visible after the ZSD constructor callbacks are 667c478bd9Sstevel@tonic-gate * executed. A zone remains in this state until it transitions into 677c478bd9Sstevel@tonic-gate * the ZONE_IS_BOOTING state as a result of a call to zone_boot(). 687c478bd9Sstevel@tonic-gate * 697c478bd9Sstevel@tonic-gate * ZONE_IS_BOOTING: in this shortlived-state, zsched attempts to start 707c478bd9Sstevel@tonic-gate * init. Should that fail, the zone proceeds to the ZONE_IS_SHUTTING_DOWN 717c478bd9Sstevel@tonic-gate * state. 727c478bd9Sstevel@tonic-gate * 737c478bd9Sstevel@tonic-gate * ZONE_IS_RUNNING: The zone is open for business: zsched has 747c478bd9Sstevel@tonic-gate * successfully started init. A zone remains in this state until 757c478bd9Sstevel@tonic-gate * zone_shutdown() is called. 767c478bd9Sstevel@tonic-gate * 777c478bd9Sstevel@tonic-gate * ZONE_IS_SHUTTING_DOWN: zone_shutdown() has been called, the system is 787c478bd9Sstevel@tonic-gate * killing all processes running in the zone. The zone remains 797c478bd9Sstevel@tonic-gate * in this state until there are no more user processes running in the zone. 807c478bd9Sstevel@tonic-gate * zone_create(), zone_enter(), and zone_destroy() on this zone will fail. 817c478bd9Sstevel@tonic-gate * Since zone_shutdown() is restartable, it may be called successfully 827c478bd9Sstevel@tonic-gate * multiple times for the same zone_t. Setting of the zone's state to 837c478bd9Sstevel@tonic-gate * ZONE_IS_SHUTTING_DOWN is synchronized with mounts, so VOP_MOUNT() may check 847c478bd9Sstevel@tonic-gate * the zone's status without worrying about it being a moving target. 857c478bd9Sstevel@tonic-gate * 867c478bd9Sstevel@tonic-gate * ZONE_IS_EMPTY: zone_shutdown() has been called, and there 877c478bd9Sstevel@tonic-gate * are no more user processes in the zone. The zone remains in this 887c478bd9Sstevel@tonic-gate * state until there are no more kernel threads associated with the 897c478bd9Sstevel@tonic-gate * zone. zone_create(), zone_enter(), and zone_destroy() on this zone will 907c478bd9Sstevel@tonic-gate * fail. 917c478bd9Sstevel@tonic-gate * 927c478bd9Sstevel@tonic-gate * ZONE_IS_DOWN: All kernel threads doing work on behalf of the zone 937c478bd9Sstevel@tonic-gate * have exited. zone_shutdown() returns. Henceforth it is not possible to 947c478bd9Sstevel@tonic-gate * join the zone or create kernel threads therein. 957c478bd9Sstevel@tonic-gate * 967c478bd9Sstevel@tonic-gate * ZONE_IS_DYING: zone_destroy() has been called on the zone; zone 977c478bd9Sstevel@tonic-gate * remains in this state until zsched exits. Calls to zone_find_by_*() 987c478bd9Sstevel@tonic-gate * return NULL from now on. 997c478bd9Sstevel@tonic-gate * 1007c478bd9Sstevel@tonic-gate * ZONE_IS_DEAD: zsched has exited (zone_ntasks == 0). There are no 1017c478bd9Sstevel@tonic-gate * processes or threads doing work on behalf of the zone. The zone is 1027c478bd9Sstevel@tonic-gate * removed from the list of active zones. zone_destroy() returns, and 1037c478bd9Sstevel@tonic-gate * the zone can be recreated. 1047c478bd9Sstevel@tonic-gate * 1057c478bd9Sstevel@tonic-gate * ZONE_IS_FREE (internal state): zone_ref goes to 0, ZSD destructor 1067c478bd9Sstevel@tonic-gate * callbacks are executed, and all memory associated with the zone is 1077c478bd9Sstevel@tonic-gate * freed. 1087c478bd9Sstevel@tonic-gate * 1097c478bd9Sstevel@tonic-gate * Threads can wait for the zone to enter a requested state by using 1107c478bd9Sstevel@tonic-gate * zone_status_wait() or zone_status_timedwait() with the desired 1117c478bd9Sstevel@tonic-gate * state passed in as an argument. Zone state transitions are 1127c478bd9Sstevel@tonic-gate * uni-directional; it is not possible to move back to an earlier state. 1137c478bd9Sstevel@tonic-gate * 1147c478bd9Sstevel@tonic-gate * 1157c478bd9Sstevel@tonic-gate * Zone-Specific Data: 1167c478bd9Sstevel@tonic-gate * 1177c478bd9Sstevel@tonic-gate * Subsystems needing to maintain zone-specific data can store that 1187c478bd9Sstevel@tonic-gate * data using the ZSD mechanism. This provides a zone-specific data 1197c478bd9Sstevel@tonic-gate * store, similar to thread-specific data (see pthread_getspecific(3C) 1207c478bd9Sstevel@tonic-gate * or the TSD code in uts/common/disp/thread.c. Also, ZSD can be used 1217c478bd9Sstevel@tonic-gate * to register callbacks to be invoked when a zone is created, shut 1227c478bd9Sstevel@tonic-gate * down, or destroyed. This can be used to initialize zone-specific 1237c478bd9Sstevel@tonic-gate * data for new zones and to clean up when zones go away. 1247c478bd9Sstevel@tonic-gate * 1257c478bd9Sstevel@tonic-gate * 1267c478bd9Sstevel@tonic-gate * Data Structures: 1277c478bd9Sstevel@tonic-gate * 1287c478bd9Sstevel@tonic-gate * The per-zone structure (zone_t) is reference counted, and freed 1297c478bd9Sstevel@tonic-gate * when all references are released. zone_hold and zone_rele can be 1307c478bd9Sstevel@tonic-gate * used to adjust the reference count. In addition, reference counts 1317c478bd9Sstevel@tonic-gate * associated with the cred_t structure are tracked separately using 1327c478bd9Sstevel@tonic-gate * zone_cred_hold and zone_cred_rele. 1337c478bd9Sstevel@tonic-gate * 1347c478bd9Sstevel@tonic-gate * Pointers to active zone_t's are stored in two hash tables; one 1357c478bd9Sstevel@tonic-gate * for searching by id, the other for searching by name. Lookups 1367c478bd9Sstevel@tonic-gate * can be performed on either basis, using zone_find_by_id and 1377c478bd9Sstevel@tonic-gate * zone_find_by_name. Both return zone_t pointers with the zone 1387c478bd9Sstevel@tonic-gate * held, so zone_rele should be called when the pointer is no longer 1397c478bd9Sstevel@tonic-gate * needed. Zones can also be searched by path; zone_find_by_path 1407c478bd9Sstevel@tonic-gate * returns the zone with which a path name is associated (global 1417c478bd9Sstevel@tonic-gate * zone if the path is not within some other zone's file system 1427c478bd9Sstevel@tonic-gate * hierarchy). This currently requires iterating through each zone, 1437c478bd9Sstevel@tonic-gate * so it is slower than an id or name search via a hash table. 1447c478bd9Sstevel@tonic-gate * 1457c478bd9Sstevel@tonic-gate * 1467c478bd9Sstevel@tonic-gate * Locking: 1477c478bd9Sstevel@tonic-gate * 1487c478bd9Sstevel@tonic-gate * zonehash_lock: This is a top-level global lock used to protect the 1497c478bd9Sstevel@tonic-gate * zone hash tables and lists. Zones cannot be created or destroyed 1507c478bd9Sstevel@tonic-gate * while this lock is held. 1517c478bd9Sstevel@tonic-gate * zone_status_lock: This is a global lock protecting zone state. 1527c478bd9Sstevel@tonic-gate * Zones cannot change state while this lock is held. It also 1537c478bd9Sstevel@tonic-gate * protects the list of kernel threads associated with a zone. 1547c478bd9Sstevel@tonic-gate * zone_lock: This is a per-zone lock used to protect several fields of 1557c478bd9Sstevel@tonic-gate * the zone_t (see <sys/zone.h> for details). In addition, holding 1567c478bd9Sstevel@tonic-gate * this lock means that the zone cannot go away. 1577c478bd9Sstevel@tonic-gate * zsd_key_lock: This is a global lock protecting the key state for ZSD. 1587c478bd9Sstevel@tonic-gate * zone_deathrow_lock: This is a global lock protecting the "deathrow" 1597c478bd9Sstevel@tonic-gate * list (a list of zones in the ZONE_IS_DEAD state). 1607c478bd9Sstevel@tonic-gate * 1617c478bd9Sstevel@tonic-gate * Ordering requirements: 1627c478bd9Sstevel@tonic-gate * pool_lock --> cpu_lock --> zonehash_lock --> zone_status_lock --> 1637c478bd9Sstevel@tonic-gate * zone_lock --> zsd_key_lock --> pidlock --> p_lock 1647c478bd9Sstevel@tonic-gate * 1657c478bd9Sstevel@tonic-gate * Blocking memory allocations are permitted while holding any of the 1667c478bd9Sstevel@tonic-gate * zone locks. 1677c478bd9Sstevel@tonic-gate * 1687c478bd9Sstevel@tonic-gate * 1697c478bd9Sstevel@tonic-gate * System Call Interface: 1707c478bd9Sstevel@tonic-gate * 1717c478bd9Sstevel@tonic-gate * The zone subsystem can be managed and queried from user level with 1727c478bd9Sstevel@tonic-gate * the following system calls (all subcodes of the primary "zone" 1737c478bd9Sstevel@tonic-gate * system call): 1747c478bd9Sstevel@tonic-gate * - zone_create: creates a zone with selected attributes (name, 175fa9e4066Sahrens * root path, privileges, resource controls, ZFS datasets) 1767c478bd9Sstevel@tonic-gate * - zone_enter: allows the current process to enter a zone 1777c478bd9Sstevel@tonic-gate * - zone_getattr: reports attributes of a zone 1783f2f09c1Sdp * - zone_setattr: set attributes of a zone 1793f2f09c1Sdp * - zone_boot: set 'init' running for the zone 1807c478bd9Sstevel@tonic-gate * - zone_list: lists all zones active in the system 1817c478bd9Sstevel@tonic-gate * - zone_lookup: looks up zone id based on name 1827c478bd9Sstevel@tonic-gate * - zone_shutdown: initiates shutdown process (see states above) 1837c478bd9Sstevel@tonic-gate * - zone_destroy: completes shutdown process (see states above) 1847c478bd9Sstevel@tonic-gate * 1857c478bd9Sstevel@tonic-gate */ 1867c478bd9Sstevel@tonic-gate 1877c478bd9Sstevel@tonic-gate #include <sys/priv_impl.h> 1887c478bd9Sstevel@tonic-gate #include <sys/cred.h> 1897c478bd9Sstevel@tonic-gate #include <c2/audit.h> 1907c478bd9Sstevel@tonic-gate #include <sys/debug.h> 1917c478bd9Sstevel@tonic-gate #include <sys/file.h> 1927c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 1937c478bd9Sstevel@tonic-gate #include <sys/mutex.h> 19445916cd2Sjpk #include <sys/note.h> 1957c478bd9Sstevel@tonic-gate #include <sys/pathname.h> 1967c478bd9Sstevel@tonic-gate #include <sys/proc.h> 1977c478bd9Sstevel@tonic-gate #include <sys/project.h> 198cf8f45c7Sdstaff #include <sys/sysevent.h> 1997c478bd9Sstevel@tonic-gate #include <sys/task.h> 2007c478bd9Sstevel@tonic-gate #include <sys/systm.h> 2017c478bd9Sstevel@tonic-gate #include <sys/types.h> 2027c478bd9Sstevel@tonic-gate #include <sys/utsname.h> 2037c478bd9Sstevel@tonic-gate #include <sys/vnode.h> 2047c478bd9Sstevel@tonic-gate #include <sys/vfs.h> 2057c478bd9Sstevel@tonic-gate #include <sys/systeminfo.h> 2067c478bd9Sstevel@tonic-gate #include <sys/policy.h> 2077c478bd9Sstevel@tonic-gate #include <sys/cred_impl.h> 2087c478bd9Sstevel@tonic-gate #include <sys/contract_impl.h> 2097c478bd9Sstevel@tonic-gate #include <sys/contract/process_impl.h> 2107c478bd9Sstevel@tonic-gate #include <sys/class.h> 2117c478bd9Sstevel@tonic-gate #include <sys/pool.h> 2127c478bd9Sstevel@tonic-gate #include <sys/pool_pset.h> 2137c478bd9Sstevel@tonic-gate #include <sys/pset.h> 2147c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 2157c478bd9Sstevel@tonic-gate #include <sys/callb.h> 2167c478bd9Sstevel@tonic-gate #include <sys/vmparam.h> 2177c478bd9Sstevel@tonic-gate #include <sys/corectl.h> 218824c205fSml #include <sys/ipc_impl.h> 2197c478bd9Sstevel@tonic-gate 2207c478bd9Sstevel@tonic-gate #include <sys/door.h> 2217c478bd9Sstevel@tonic-gate #include <sys/cpuvar.h> 2227c478bd9Sstevel@tonic-gate 2237c478bd9Sstevel@tonic-gate #include <sys/uadmin.h> 2247c478bd9Sstevel@tonic-gate #include <sys/session.h> 2257c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h> 2267c478bd9Sstevel@tonic-gate #include <sys/modhash.h> 2273f2f09c1Sdp #include <sys/sunddi.h> 2287c478bd9Sstevel@tonic-gate #include <sys/nvpair.h> 2297c478bd9Sstevel@tonic-gate #include <sys/rctl.h> 2307c478bd9Sstevel@tonic-gate #include <sys/fss.h> 231*9acbbeafSnn #include <sys/brand.h> 2327c478bd9Sstevel@tonic-gate #include <sys/zone.h> 23345916cd2Sjpk #include <sys/tsol/label.h> 2347c478bd9Sstevel@tonic-gate 2357c478bd9Sstevel@tonic-gate /* 2367c478bd9Sstevel@tonic-gate * cv used to signal that all references to the zone have been released. This 2377c478bd9Sstevel@tonic-gate * needs to be global since there may be multiple waiters, and the first to 2387c478bd9Sstevel@tonic-gate * wake up will free the zone_t, hence we cannot use zone->zone_cv. 2397c478bd9Sstevel@tonic-gate */ 2407c478bd9Sstevel@tonic-gate static kcondvar_t zone_destroy_cv; 2417c478bd9Sstevel@tonic-gate /* 2427c478bd9Sstevel@tonic-gate * Lock used to serialize access to zone_cv. This could have been per-zone, 2437c478bd9Sstevel@tonic-gate * but then we'd need another lock for zone_destroy_cv, and why bother? 2447c478bd9Sstevel@tonic-gate */ 2457c478bd9Sstevel@tonic-gate static kmutex_t zone_status_lock; 2467c478bd9Sstevel@tonic-gate 2477c478bd9Sstevel@tonic-gate /* 2487c478bd9Sstevel@tonic-gate * ZSD-related global variables. 2497c478bd9Sstevel@tonic-gate */ 2507c478bd9Sstevel@tonic-gate static kmutex_t zsd_key_lock; /* protects the following two */ 2517c478bd9Sstevel@tonic-gate /* 2527c478bd9Sstevel@tonic-gate * The next caller of zone_key_create() will be assigned a key of ++zsd_keyval. 2537c478bd9Sstevel@tonic-gate */ 2547c478bd9Sstevel@tonic-gate static zone_key_t zsd_keyval = 0; 2557c478bd9Sstevel@tonic-gate /* 2567c478bd9Sstevel@tonic-gate * Global list of registered keys. We use this when a new zone is created. 2577c478bd9Sstevel@tonic-gate */ 2587c478bd9Sstevel@tonic-gate static list_t zsd_registered_keys; 2597c478bd9Sstevel@tonic-gate 2607c478bd9Sstevel@tonic-gate int zone_hash_size = 256; 26145916cd2Sjpk static mod_hash_t *zonehashbyname, *zonehashbyid, *zonehashbylabel; 2627c478bd9Sstevel@tonic-gate static kmutex_t zonehash_lock; 2637c478bd9Sstevel@tonic-gate static uint_t zonecount; 2647c478bd9Sstevel@tonic-gate static id_space_t *zoneid_space; 2657c478bd9Sstevel@tonic-gate 2667c478bd9Sstevel@tonic-gate /* 2677c478bd9Sstevel@tonic-gate * The global zone (aka zone0) is the all-seeing, all-knowing zone in which the 2687c478bd9Sstevel@tonic-gate * kernel proper runs, and which manages all other zones. 2697c478bd9Sstevel@tonic-gate * 2707c478bd9Sstevel@tonic-gate * Although not declared as static, the variable "zone0" should not be used 2717c478bd9Sstevel@tonic-gate * except for by code that needs to reference the global zone early on in boot, 2727c478bd9Sstevel@tonic-gate * before it is fully initialized. All other consumers should use 2737c478bd9Sstevel@tonic-gate * 'global_zone'. 2747c478bd9Sstevel@tonic-gate */ 2757c478bd9Sstevel@tonic-gate zone_t zone0; 2767c478bd9Sstevel@tonic-gate zone_t *global_zone = NULL; /* Set when the global zone is initialized */ 2777c478bd9Sstevel@tonic-gate 2787c478bd9Sstevel@tonic-gate /* 2797c478bd9Sstevel@tonic-gate * List of active zones, protected by zonehash_lock. 2807c478bd9Sstevel@tonic-gate */ 2817c478bd9Sstevel@tonic-gate static list_t zone_active; 2827c478bd9Sstevel@tonic-gate 2837c478bd9Sstevel@tonic-gate /* 2847c478bd9Sstevel@tonic-gate * List of destroyed zones that still have outstanding cred references. 2857c478bd9Sstevel@tonic-gate * Used for debugging. Uses a separate lock to avoid lock ordering 2867c478bd9Sstevel@tonic-gate * problems in zone_free. 2877c478bd9Sstevel@tonic-gate */ 2887c478bd9Sstevel@tonic-gate static list_t zone_deathrow; 2897c478bd9Sstevel@tonic-gate static kmutex_t zone_deathrow_lock; 2907c478bd9Sstevel@tonic-gate 2917c478bd9Sstevel@tonic-gate /* number of zones is limited by virtual interface limit in IP */ 2927c478bd9Sstevel@tonic-gate uint_t maxzones = 8192; 2937c478bd9Sstevel@tonic-gate 294cf8f45c7Sdstaff /* Event channel to sent zone state change notifications */ 295cf8f45c7Sdstaff evchan_t *zone_event_chan; 296cf8f45c7Sdstaff 297cf8f45c7Sdstaff /* 298cf8f45c7Sdstaff * This table holds the mapping from kernel zone states to 299cf8f45c7Sdstaff * states visible in the state notification API. 300cf8f45c7Sdstaff * The idea is that we only expose "obvious" states and 301cf8f45c7Sdstaff * do not expose states which are just implementation details. 302cf8f45c7Sdstaff */ 303cf8f45c7Sdstaff const char *zone_status_table[] = { 304cf8f45c7Sdstaff ZONE_EVENT_UNINITIALIZED, /* uninitialized */ 305cf8f45c7Sdstaff ZONE_EVENT_READY, /* ready */ 306cf8f45c7Sdstaff ZONE_EVENT_READY, /* booting */ 307cf8f45c7Sdstaff ZONE_EVENT_RUNNING, /* running */ 308cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* shutting_down */ 309cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* empty */ 310cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* down */ 311cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* dying */ 312cf8f45c7Sdstaff ZONE_EVENT_UNINITIALIZED, /* dead */ 313cf8f45c7Sdstaff }; 314cf8f45c7Sdstaff 3157c478bd9Sstevel@tonic-gate /* 3167c478bd9Sstevel@tonic-gate * This isn't static so lint doesn't complain. 3177c478bd9Sstevel@tonic-gate */ 3187c478bd9Sstevel@tonic-gate rctl_hndl_t rc_zone_cpu_shares; 3197c478bd9Sstevel@tonic-gate rctl_hndl_t rc_zone_nlwps; 320824c205fSml rctl_hndl_t rc_zone_shmmax; 321824c205fSml rctl_hndl_t rc_zone_shmmni; 322824c205fSml rctl_hndl_t rc_zone_semmni; 323824c205fSml rctl_hndl_t rc_zone_msgmni; 3247c478bd9Sstevel@tonic-gate /* 3257c478bd9Sstevel@tonic-gate * Synchronization primitives used to synchronize between mounts and zone 3267c478bd9Sstevel@tonic-gate * creation/destruction. 3277c478bd9Sstevel@tonic-gate */ 3287c478bd9Sstevel@tonic-gate static int mounts_in_progress; 3297c478bd9Sstevel@tonic-gate static kcondvar_t mount_cv; 3307c478bd9Sstevel@tonic-gate static kmutex_t mount_lock; 3317c478bd9Sstevel@tonic-gate 3323f2f09c1Sdp const char * const zone_default_initname = "/sbin/init"; 33345916cd2Sjpk static char * const zone_prefix = "/zone/"; 3347c478bd9Sstevel@tonic-gate static int zone_shutdown(zoneid_t zoneid); 3357c478bd9Sstevel@tonic-gate 336821c4a97Sdp /* 337821c4a97Sdp * Bump this number when you alter the zone syscall interfaces; this is 338821c4a97Sdp * because we need to have support for previous API versions in libc 339821c4a97Sdp * to support patching; libc calls into the kernel to determine this number. 340821c4a97Sdp * 341821c4a97Sdp * Version 1 of the API is the version originally shipped with Solaris 10 342821c4a97Sdp * Version 2 alters the zone_create system call in order to support more 343821c4a97Sdp * arguments by moving the args into a structure; and to do better 344821c4a97Sdp * error reporting when zone_create() fails. 345821c4a97Sdp * Version 3 alters the zone_create system call in order to support the 346821c4a97Sdp * import of ZFS datasets to zones. 34745916cd2Sjpk * Version 4 alters the zone_create system call in order to support 34845916cd2Sjpk * Trusted Extensions. 3493f2f09c1Sdp * Version 5 alters the zone_boot system call, and converts its old 3503f2f09c1Sdp * bootargs parameter to be set by the zone_setattr API instead. 351821c4a97Sdp */ 3523f2f09c1Sdp static const int ZONE_SYSCALL_API_VERSION = 5; 353821c4a97Sdp 3547c478bd9Sstevel@tonic-gate /* 3557c478bd9Sstevel@tonic-gate * Certain filesystems (such as NFS and autofs) need to know which zone 3567c478bd9Sstevel@tonic-gate * the mount is being placed in. Because of this, we need to be able to 3577c478bd9Sstevel@tonic-gate * ensure that a zone isn't in the process of being created such that 3587c478bd9Sstevel@tonic-gate * nfs_mount() thinks it is in the global zone, while by the time it 3597c478bd9Sstevel@tonic-gate * gets added the list of mounted zones, it ends up on zoneA's mount 3607c478bd9Sstevel@tonic-gate * list. 3617c478bd9Sstevel@tonic-gate * 3627c478bd9Sstevel@tonic-gate * The following functions: block_mounts()/resume_mounts() and 3637c478bd9Sstevel@tonic-gate * mount_in_progress()/mount_completed() are used by zones and the VFS 3647c478bd9Sstevel@tonic-gate * layer (respectively) to synchronize zone creation and new mounts. 3657c478bd9Sstevel@tonic-gate * 3667c478bd9Sstevel@tonic-gate * The semantics are like a reader-reader lock such that there may 3677c478bd9Sstevel@tonic-gate * either be multiple mounts (or zone creations, if that weren't 3687c478bd9Sstevel@tonic-gate * serialized by zonehash_lock) in progress at the same time, but not 3697c478bd9Sstevel@tonic-gate * both. 3707c478bd9Sstevel@tonic-gate * 3717c478bd9Sstevel@tonic-gate * We use cv's so the user can ctrl-C out of the operation if it's 3727c478bd9Sstevel@tonic-gate * taking too long. 3737c478bd9Sstevel@tonic-gate * 3747c478bd9Sstevel@tonic-gate * The semantics are such that there is unfair bias towards the 3757c478bd9Sstevel@tonic-gate * "current" operation. This means that zone creations may starve if 3767c478bd9Sstevel@tonic-gate * there is a rapid succession of new mounts coming in to the system, or 3777c478bd9Sstevel@tonic-gate * there is a remote possibility that zones will be created at such a 3787c478bd9Sstevel@tonic-gate * rate that new mounts will not be able to proceed. 3797c478bd9Sstevel@tonic-gate */ 3807c478bd9Sstevel@tonic-gate /* 3817c478bd9Sstevel@tonic-gate * Prevent new mounts from progressing to the point of calling 3827c478bd9Sstevel@tonic-gate * VFS_MOUNT(). If there are already mounts in this "region", wait for 3837c478bd9Sstevel@tonic-gate * them to complete. 3847c478bd9Sstevel@tonic-gate */ 3857c478bd9Sstevel@tonic-gate static int 3867c478bd9Sstevel@tonic-gate block_mounts(void) 3877c478bd9Sstevel@tonic-gate { 3887c478bd9Sstevel@tonic-gate int retval = 0; 3897c478bd9Sstevel@tonic-gate 3907c478bd9Sstevel@tonic-gate /* 3917c478bd9Sstevel@tonic-gate * Since it may block for a long time, block_mounts() shouldn't be 3927c478bd9Sstevel@tonic-gate * called with zonehash_lock held. 3937c478bd9Sstevel@tonic-gate */ 3947c478bd9Sstevel@tonic-gate ASSERT(MUTEX_NOT_HELD(&zonehash_lock)); 3957c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 3967c478bd9Sstevel@tonic-gate while (mounts_in_progress > 0) { 3977c478bd9Sstevel@tonic-gate if (cv_wait_sig(&mount_cv, &mount_lock) == 0) 3987c478bd9Sstevel@tonic-gate goto signaled; 3997c478bd9Sstevel@tonic-gate } 4007c478bd9Sstevel@tonic-gate /* 4017c478bd9Sstevel@tonic-gate * A negative value of mounts_in_progress indicates that mounts 4027c478bd9Sstevel@tonic-gate * have been blocked by (-mounts_in_progress) different callers. 4037c478bd9Sstevel@tonic-gate */ 4047c478bd9Sstevel@tonic-gate mounts_in_progress--; 4057c478bd9Sstevel@tonic-gate retval = 1; 4067c478bd9Sstevel@tonic-gate signaled: 4077c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4087c478bd9Sstevel@tonic-gate return (retval); 4097c478bd9Sstevel@tonic-gate } 4107c478bd9Sstevel@tonic-gate 4117c478bd9Sstevel@tonic-gate /* 4127c478bd9Sstevel@tonic-gate * The VFS layer may progress with new mounts as far as we're concerned. 4137c478bd9Sstevel@tonic-gate * Allow them to progress if we were the last obstacle. 4147c478bd9Sstevel@tonic-gate */ 4157c478bd9Sstevel@tonic-gate static void 4167c478bd9Sstevel@tonic-gate resume_mounts(void) 4177c478bd9Sstevel@tonic-gate { 4187c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 4197c478bd9Sstevel@tonic-gate if (++mounts_in_progress == 0) 4207c478bd9Sstevel@tonic-gate cv_broadcast(&mount_cv); 4217c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4227c478bd9Sstevel@tonic-gate } 4237c478bd9Sstevel@tonic-gate 4247c478bd9Sstevel@tonic-gate /* 4257c478bd9Sstevel@tonic-gate * The VFS layer is busy with a mount; zones should wait until all 4267c478bd9Sstevel@tonic-gate * mounts are completed to progress. 4277c478bd9Sstevel@tonic-gate */ 4287c478bd9Sstevel@tonic-gate void 4297c478bd9Sstevel@tonic-gate mount_in_progress(void) 4307c478bd9Sstevel@tonic-gate { 4317c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 4327c478bd9Sstevel@tonic-gate while (mounts_in_progress < 0) 4337c478bd9Sstevel@tonic-gate cv_wait(&mount_cv, &mount_lock); 4347c478bd9Sstevel@tonic-gate mounts_in_progress++; 4357c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4367c478bd9Sstevel@tonic-gate } 4377c478bd9Sstevel@tonic-gate 4387c478bd9Sstevel@tonic-gate /* 4397c478bd9Sstevel@tonic-gate * VFS is done with one mount; wake up any waiting block_mounts() 4407c478bd9Sstevel@tonic-gate * callers if this is the last mount. 4417c478bd9Sstevel@tonic-gate */ 4427c478bd9Sstevel@tonic-gate void 4437c478bd9Sstevel@tonic-gate mount_completed(void) 4447c478bd9Sstevel@tonic-gate { 4457c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 4467c478bd9Sstevel@tonic-gate if (--mounts_in_progress == 0) 4477c478bd9Sstevel@tonic-gate cv_broadcast(&mount_cv); 4487c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4497c478bd9Sstevel@tonic-gate } 4507c478bd9Sstevel@tonic-gate 4517c478bd9Sstevel@tonic-gate /* 4527c478bd9Sstevel@tonic-gate * ZSD routines. 4537c478bd9Sstevel@tonic-gate * 4547c478bd9Sstevel@tonic-gate * Zone Specific Data (ZSD) is modeled after Thread Specific Data as 4557c478bd9Sstevel@tonic-gate * defined by the pthread_key_create() and related interfaces. 4567c478bd9Sstevel@tonic-gate * 4577c478bd9Sstevel@tonic-gate * Kernel subsystems may register one or more data items and/or 4587c478bd9Sstevel@tonic-gate * callbacks to be executed when a zone is created, shutdown, or 4597c478bd9Sstevel@tonic-gate * destroyed. 4607c478bd9Sstevel@tonic-gate * 4617c478bd9Sstevel@tonic-gate * Unlike the thread counterpart, destructor callbacks will be executed 4627c478bd9Sstevel@tonic-gate * even if the data pointer is NULL and/or there are no constructor 4637c478bd9Sstevel@tonic-gate * callbacks, so it is the responsibility of such callbacks to check for 4647c478bd9Sstevel@tonic-gate * NULL data values if necessary. 4657c478bd9Sstevel@tonic-gate * 4667c478bd9Sstevel@tonic-gate * The locking strategy and overall picture is as follows: 4677c478bd9Sstevel@tonic-gate * 4687c478bd9Sstevel@tonic-gate * When someone calls zone_key_create(), a template ZSD entry is added to the 4697c478bd9Sstevel@tonic-gate * global list "zsd_registered_keys", protected by zsd_key_lock. The 4707c478bd9Sstevel@tonic-gate * constructor callback is called immediately on all existing zones, and a 4717c478bd9Sstevel@tonic-gate * copy of the ZSD entry added to the per-zone zone_zsd list (protected by 4727c478bd9Sstevel@tonic-gate * zone_lock). As this operation requires the list of zones, the list of 4737c478bd9Sstevel@tonic-gate * registered keys, and the per-zone list of ZSD entries to remain constant 4747c478bd9Sstevel@tonic-gate * throughout the entire operation, it must grab zonehash_lock, zone_lock for 4757c478bd9Sstevel@tonic-gate * all existing zones, and zsd_key_lock, in that order. Similar locking is 4767c478bd9Sstevel@tonic-gate * needed when zone_key_delete() is called. It is thus sufficient to hold 4777c478bd9Sstevel@tonic-gate * zsd_key_lock *or* zone_lock to prevent additions to or removals from the 4787c478bd9Sstevel@tonic-gate * per-zone zone_zsd list. 4797c478bd9Sstevel@tonic-gate * 4807c478bd9Sstevel@tonic-gate * Note that this implementation does not make a copy of the ZSD entry if a 4817c478bd9Sstevel@tonic-gate * constructor callback is not provided. A zone_getspecific() on such an 4827c478bd9Sstevel@tonic-gate * uninitialized ZSD entry will return NULL. 4837c478bd9Sstevel@tonic-gate * 4847c478bd9Sstevel@tonic-gate * When new zones are created constructor callbacks for all registered ZSD 4857c478bd9Sstevel@tonic-gate * entries will be called. 4867c478bd9Sstevel@tonic-gate * 4877c478bd9Sstevel@tonic-gate * The framework does not provide any locking around zone_getspecific() and 4887c478bd9Sstevel@tonic-gate * zone_setspecific() apart from that needed for internal consistency, so 4897c478bd9Sstevel@tonic-gate * callers interested in atomic "test-and-set" semantics will need to provide 4907c478bd9Sstevel@tonic-gate * their own locking. 4917c478bd9Sstevel@tonic-gate */ 4927c478bd9Sstevel@tonic-gate void 4937c478bd9Sstevel@tonic-gate zone_key_create(zone_key_t *keyp, void *(*create)(zoneid_t), 4947c478bd9Sstevel@tonic-gate void (*shutdown)(zoneid_t, void *), void (*destroy)(zoneid_t, void *)) 4957c478bd9Sstevel@tonic-gate { 4967c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp; 4977c478bd9Sstevel@tonic-gate struct zsd_entry *t; 4987c478bd9Sstevel@tonic-gate struct zone *zone; 4997c478bd9Sstevel@tonic-gate 5007c478bd9Sstevel@tonic-gate zsdp = kmem_alloc(sizeof (*zsdp), KM_SLEEP); 5017c478bd9Sstevel@tonic-gate zsdp->zsd_data = NULL; 5027c478bd9Sstevel@tonic-gate zsdp->zsd_create = create; 5037c478bd9Sstevel@tonic-gate zsdp->zsd_shutdown = shutdown; 5047c478bd9Sstevel@tonic-gate zsdp->zsd_destroy = destroy; 5057c478bd9Sstevel@tonic-gate 5067c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); /* stop the world */ 5077c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5087c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 5097c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); /* lock all zones */ 5107c478bd9Sstevel@tonic-gate 5117c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 5127c478bd9Sstevel@tonic-gate *keyp = zsdp->zsd_key = ++zsd_keyval; 5137c478bd9Sstevel@tonic-gate ASSERT(zsd_keyval != 0); 5147c478bd9Sstevel@tonic-gate list_insert_tail(&zsd_registered_keys, zsdp); 5157c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 5167c478bd9Sstevel@tonic-gate 5177c478bd9Sstevel@tonic-gate if (create != NULL) { 5187c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5197c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 5207c478bd9Sstevel@tonic-gate t = kmem_alloc(sizeof (*t), KM_SLEEP); 5217c478bd9Sstevel@tonic-gate t->zsd_key = *keyp; 5227c478bd9Sstevel@tonic-gate t->zsd_data = (*create)(zone->zone_id); 5237c478bd9Sstevel@tonic-gate t->zsd_create = create; 5247c478bd9Sstevel@tonic-gate t->zsd_shutdown = shutdown; 5257c478bd9Sstevel@tonic-gate t->zsd_destroy = destroy; 5267c478bd9Sstevel@tonic-gate list_insert_tail(&zone->zone_zsd, t); 5277c478bd9Sstevel@tonic-gate } 5287c478bd9Sstevel@tonic-gate } 5297c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5307c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 5317c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 5327c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 5337c478bd9Sstevel@tonic-gate } 5347c478bd9Sstevel@tonic-gate 5357c478bd9Sstevel@tonic-gate /* 5367c478bd9Sstevel@tonic-gate * Helper function to find the zsd_entry associated with the key in the 5377c478bd9Sstevel@tonic-gate * given list. 5387c478bd9Sstevel@tonic-gate */ 5397c478bd9Sstevel@tonic-gate static struct zsd_entry * 5407c478bd9Sstevel@tonic-gate zsd_find(list_t *l, zone_key_t key) 5417c478bd9Sstevel@tonic-gate { 5427c478bd9Sstevel@tonic-gate struct zsd_entry *zsd; 5437c478bd9Sstevel@tonic-gate 5447c478bd9Sstevel@tonic-gate for (zsd = list_head(l); zsd != NULL; zsd = list_next(l, zsd)) { 5457c478bd9Sstevel@tonic-gate if (zsd->zsd_key == key) { 5467c478bd9Sstevel@tonic-gate /* 5477c478bd9Sstevel@tonic-gate * Move to head of list to keep list in MRU order. 5487c478bd9Sstevel@tonic-gate */ 5497c478bd9Sstevel@tonic-gate if (zsd != list_head(l)) { 5507c478bd9Sstevel@tonic-gate list_remove(l, zsd); 5517c478bd9Sstevel@tonic-gate list_insert_head(l, zsd); 5527c478bd9Sstevel@tonic-gate } 5537c478bd9Sstevel@tonic-gate return (zsd); 5547c478bd9Sstevel@tonic-gate } 5557c478bd9Sstevel@tonic-gate } 5567c478bd9Sstevel@tonic-gate return (NULL); 5577c478bd9Sstevel@tonic-gate } 5587c478bd9Sstevel@tonic-gate 5597c478bd9Sstevel@tonic-gate /* 5607c478bd9Sstevel@tonic-gate * Function called when a module is being unloaded, or otherwise wishes 5617c478bd9Sstevel@tonic-gate * to unregister its ZSD key and callbacks. 5627c478bd9Sstevel@tonic-gate */ 5637c478bd9Sstevel@tonic-gate int 5647c478bd9Sstevel@tonic-gate zone_key_delete(zone_key_t key) 5657c478bd9Sstevel@tonic-gate { 5667c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp = NULL; 5677c478bd9Sstevel@tonic-gate zone_t *zone; 5687c478bd9Sstevel@tonic-gate 5697c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); /* Zone create/delete waits for us */ 5707c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5717c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 5727c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); /* lock all zones */ 5737c478bd9Sstevel@tonic-gate 5747c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 5757c478bd9Sstevel@tonic-gate zsdp = zsd_find(&zsd_registered_keys, key); 5767c478bd9Sstevel@tonic-gate if (zsdp == NULL) 5777c478bd9Sstevel@tonic-gate goto notfound; 5787c478bd9Sstevel@tonic-gate list_remove(&zsd_registered_keys, zsdp); 5797c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 5807c478bd9Sstevel@tonic-gate 5817c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5827c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 5837c478bd9Sstevel@tonic-gate struct zsd_entry *del; 5847c478bd9Sstevel@tonic-gate void *data; 5857c478bd9Sstevel@tonic-gate 5867c478bd9Sstevel@tonic-gate if (!(zone->zone_flags & ZF_DESTROYED)) { 5877c478bd9Sstevel@tonic-gate del = zsd_find(&zone->zone_zsd, key); 5887c478bd9Sstevel@tonic-gate if (del != NULL) { 5897c478bd9Sstevel@tonic-gate data = del->zsd_data; 5907c478bd9Sstevel@tonic-gate ASSERT(del->zsd_shutdown == zsdp->zsd_shutdown); 5917c478bd9Sstevel@tonic-gate ASSERT(del->zsd_destroy == zsdp->zsd_destroy); 5927c478bd9Sstevel@tonic-gate list_remove(&zone->zone_zsd, del); 5937c478bd9Sstevel@tonic-gate kmem_free(del, sizeof (*del)); 5947c478bd9Sstevel@tonic-gate } else { 5957c478bd9Sstevel@tonic-gate data = NULL; 5967c478bd9Sstevel@tonic-gate } 5977c478bd9Sstevel@tonic-gate if (zsdp->zsd_shutdown) 5987c478bd9Sstevel@tonic-gate zsdp->zsd_shutdown(zone->zone_id, data); 5997c478bd9Sstevel@tonic-gate if (zsdp->zsd_destroy) 6007c478bd9Sstevel@tonic-gate zsdp->zsd_destroy(zone->zone_id, data); 6017c478bd9Sstevel@tonic-gate } 6027c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6037c478bd9Sstevel@tonic-gate } 6047c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 6057c478bd9Sstevel@tonic-gate kmem_free(zsdp, sizeof (*zsdp)); 6067c478bd9Sstevel@tonic-gate return (0); 6077c478bd9Sstevel@tonic-gate 6087c478bd9Sstevel@tonic-gate notfound: 6097c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 6107c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 6117c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 6127c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6137c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 6147c478bd9Sstevel@tonic-gate return (-1); 6157c478bd9Sstevel@tonic-gate } 6167c478bd9Sstevel@tonic-gate 6177c478bd9Sstevel@tonic-gate /* 6187c478bd9Sstevel@tonic-gate * ZSD counterpart of pthread_setspecific(). 6197c478bd9Sstevel@tonic-gate */ 6207c478bd9Sstevel@tonic-gate int 6217c478bd9Sstevel@tonic-gate zone_setspecific(zone_key_t key, zone_t *zone, const void *data) 6227c478bd9Sstevel@tonic-gate { 6237c478bd9Sstevel@tonic-gate struct zsd_entry *t; 6247c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp = NULL; 6257c478bd9Sstevel@tonic-gate 6267c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 6277c478bd9Sstevel@tonic-gate t = zsd_find(&zone->zone_zsd, key); 6287c478bd9Sstevel@tonic-gate if (t != NULL) { 6297c478bd9Sstevel@tonic-gate /* 6307c478bd9Sstevel@tonic-gate * Replace old value with new 6317c478bd9Sstevel@tonic-gate */ 6327c478bd9Sstevel@tonic-gate t->zsd_data = (void *)data; 6337c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6347c478bd9Sstevel@tonic-gate return (0); 6357c478bd9Sstevel@tonic-gate } 6367c478bd9Sstevel@tonic-gate /* 6377c478bd9Sstevel@tonic-gate * If there was no previous value, go through the list of registered 6387c478bd9Sstevel@tonic-gate * keys. 6397c478bd9Sstevel@tonic-gate * 6407c478bd9Sstevel@tonic-gate * We avoid grabbing zsd_key_lock until we are sure we need it; this is 6417c478bd9Sstevel@tonic-gate * necessary for shutdown callbacks to be able to execute without fear 6427c478bd9Sstevel@tonic-gate * of deadlock. 6437c478bd9Sstevel@tonic-gate */ 6447c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 6457c478bd9Sstevel@tonic-gate zsdp = zsd_find(&zsd_registered_keys, key); 6467c478bd9Sstevel@tonic-gate if (zsdp == NULL) { /* Key was not registered */ 6477c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 6487c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6497c478bd9Sstevel@tonic-gate return (-1); 6507c478bd9Sstevel@tonic-gate } 6517c478bd9Sstevel@tonic-gate 6527c478bd9Sstevel@tonic-gate /* 6537c478bd9Sstevel@tonic-gate * Add a zsd_entry to this zone, using the template we just retrieved 6547c478bd9Sstevel@tonic-gate * to initialize the constructor and destructor(s). 6557c478bd9Sstevel@tonic-gate */ 6567c478bd9Sstevel@tonic-gate t = kmem_alloc(sizeof (*t), KM_SLEEP); 6577c478bd9Sstevel@tonic-gate t->zsd_key = key; 6587c478bd9Sstevel@tonic-gate t->zsd_data = (void *)data; 6597c478bd9Sstevel@tonic-gate t->zsd_create = zsdp->zsd_create; 6607c478bd9Sstevel@tonic-gate t->zsd_shutdown = zsdp->zsd_shutdown; 6617c478bd9Sstevel@tonic-gate t->zsd_destroy = zsdp->zsd_destroy; 6627c478bd9Sstevel@tonic-gate list_insert_tail(&zone->zone_zsd, t); 6637c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 6647c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6657c478bd9Sstevel@tonic-gate return (0); 6667c478bd9Sstevel@tonic-gate } 6677c478bd9Sstevel@tonic-gate 6687c478bd9Sstevel@tonic-gate /* 6697c478bd9Sstevel@tonic-gate * ZSD counterpart of pthread_getspecific(). 6707c478bd9Sstevel@tonic-gate */ 6717c478bd9Sstevel@tonic-gate void * 6727c478bd9Sstevel@tonic-gate zone_getspecific(zone_key_t key, zone_t *zone) 6737c478bd9Sstevel@tonic-gate { 6747c478bd9Sstevel@tonic-gate struct zsd_entry *t; 6757c478bd9Sstevel@tonic-gate void *data; 6767c478bd9Sstevel@tonic-gate 6777c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 6787c478bd9Sstevel@tonic-gate t = zsd_find(&zone->zone_zsd, key); 6797c478bd9Sstevel@tonic-gate data = (t == NULL ? NULL : t->zsd_data); 6807c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6817c478bd9Sstevel@tonic-gate return (data); 6827c478bd9Sstevel@tonic-gate } 6837c478bd9Sstevel@tonic-gate 6847c478bd9Sstevel@tonic-gate /* 6857c478bd9Sstevel@tonic-gate * Function used to initialize a zone's list of ZSD callbacks and data 6867c478bd9Sstevel@tonic-gate * when the zone is being created. The callbacks are initialized from 6877c478bd9Sstevel@tonic-gate * the template list (zsd_registered_keys), and the constructor 6887c478bd9Sstevel@tonic-gate * callback executed (if one exists). 6897c478bd9Sstevel@tonic-gate * 6907c478bd9Sstevel@tonic-gate * This is called before the zone is made publicly available, hence no 6917c478bd9Sstevel@tonic-gate * need to grab zone_lock. 6927c478bd9Sstevel@tonic-gate * 6937c478bd9Sstevel@tonic-gate * Although we grab and release zsd_key_lock, new entries cannot be 6947c478bd9Sstevel@tonic-gate * added to or removed from the zsd_registered_keys list until we 6957c478bd9Sstevel@tonic-gate * release zonehash_lock, so there isn't a window for a 6967c478bd9Sstevel@tonic-gate * zone_key_create() to come in after we've dropped zsd_key_lock but 6977c478bd9Sstevel@tonic-gate * before the zone is added to the zone list, such that the constructor 6987c478bd9Sstevel@tonic-gate * callbacks aren't executed for the new zone. 6997c478bd9Sstevel@tonic-gate */ 7007c478bd9Sstevel@tonic-gate static void 7017c478bd9Sstevel@tonic-gate zone_zsd_configure(zone_t *zone) 7027c478bd9Sstevel@tonic-gate { 7037c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp; 7047c478bd9Sstevel@tonic-gate struct zsd_entry *t; 7057c478bd9Sstevel@tonic-gate zoneid_t zoneid = zone->zone_id; 7067c478bd9Sstevel@tonic-gate 7077c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 7087c478bd9Sstevel@tonic-gate ASSERT(list_head(&zone->zone_zsd) == NULL); 7097c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 7107c478bd9Sstevel@tonic-gate for (zsdp = list_head(&zsd_registered_keys); zsdp != NULL; 7117c478bd9Sstevel@tonic-gate zsdp = list_next(&zsd_registered_keys, zsdp)) { 7127c478bd9Sstevel@tonic-gate if (zsdp->zsd_create != NULL) { 7137c478bd9Sstevel@tonic-gate t = kmem_alloc(sizeof (*t), KM_SLEEP); 7147c478bd9Sstevel@tonic-gate t->zsd_key = zsdp->zsd_key; 7157c478bd9Sstevel@tonic-gate t->zsd_create = zsdp->zsd_create; 7167c478bd9Sstevel@tonic-gate t->zsd_data = (*t->zsd_create)(zoneid); 7177c478bd9Sstevel@tonic-gate t->zsd_shutdown = zsdp->zsd_shutdown; 7187c478bd9Sstevel@tonic-gate t->zsd_destroy = zsdp->zsd_destroy; 7197c478bd9Sstevel@tonic-gate list_insert_tail(&zone->zone_zsd, t); 7207c478bd9Sstevel@tonic-gate } 7217c478bd9Sstevel@tonic-gate } 7227c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 7237c478bd9Sstevel@tonic-gate } 7247c478bd9Sstevel@tonic-gate 7257c478bd9Sstevel@tonic-gate enum zsd_callback_type { ZSD_CREATE, ZSD_SHUTDOWN, ZSD_DESTROY }; 7267c478bd9Sstevel@tonic-gate 7277c478bd9Sstevel@tonic-gate /* 7287c478bd9Sstevel@tonic-gate * Helper function to execute shutdown or destructor callbacks. 7297c478bd9Sstevel@tonic-gate */ 7307c478bd9Sstevel@tonic-gate static void 7317c478bd9Sstevel@tonic-gate zone_zsd_callbacks(zone_t *zone, enum zsd_callback_type ct) 7327c478bd9Sstevel@tonic-gate { 7337c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp; 7347c478bd9Sstevel@tonic-gate struct zsd_entry *t; 7357c478bd9Sstevel@tonic-gate zoneid_t zoneid = zone->zone_id; 7367c478bd9Sstevel@tonic-gate 7377c478bd9Sstevel@tonic-gate ASSERT(ct == ZSD_SHUTDOWN || ct == ZSD_DESTROY); 7387c478bd9Sstevel@tonic-gate ASSERT(ct != ZSD_SHUTDOWN || zone_status_get(zone) >= ZONE_IS_EMPTY); 7397c478bd9Sstevel@tonic-gate ASSERT(ct != ZSD_DESTROY || zone_status_get(zone) >= ZONE_IS_DOWN); 7407c478bd9Sstevel@tonic-gate 7417c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 7427c478bd9Sstevel@tonic-gate if (ct == ZSD_DESTROY) { 7437c478bd9Sstevel@tonic-gate if (zone->zone_flags & ZF_DESTROYED) { 7447c478bd9Sstevel@tonic-gate /* 7457c478bd9Sstevel@tonic-gate * Make sure destructors are only called once. 7467c478bd9Sstevel@tonic-gate */ 7477c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 7487c478bd9Sstevel@tonic-gate return; 7497c478bd9Sstevel@tonic-gate } 7507c478bd9Sstevel@tonic-gate zone->zone_flags |= ZF_DESTROYED; 7517c478bd9Sstevel@tonic-gate } 7527c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 7537c478bd9Sstevel@tonic-gate 7547c478bd9Sstevel@tonic-gate /* 7557c478bd9Sstevel@tonic-gate * Both zsd_key_lock and zone_lock need to be held in order to add or 7567c478bd9Sstevel@tonic-gate * remove a ZSD key, (either globally as part of 7577c478bd9Sstevel@tonic-gate * zone_key_create()/zone_key_delete(), or on a per-zone basis, as is 7587c478bd9Sstevel@tonic-gate * possible through zone_setspecific()), so it's sufficient to hold 7597c478bd9Sstevel@tonic-gate * zsd_key_lock here. 7607c478bd9Sstevel@tonic-gate * 7617c478bd9Sstevel@tonic-gate * This is a good thing, since we don't want to recursively try to grab 7627c478bd9Sstevel@tonic-gate * zone_lock if a callback attempts to do something like a crfree() or 7637c478bd9Sstevel@tonic-gate * zone_rele(). 7647c478bd9Sstevel@tonic-gate */ 7657c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 7667c478bd9Sstevel@tonic-gate for (zsdp = list_head(&zsd_registered_keys); zsdp != NULL; 7677c478bd9Sstevel@tonic-gate zsdp = list_next(&zsd_registered_keys, zsdp)) { 7687c478bd9Sstevel@tonic-gate zone_key_t key = zsdp->zsd_key; 7697c478bd9Sstevel@tonic-gate 7707c478bd9Sstevel@tonic-gate /* Skip if no callbacks registered */ 7717c478bd9Sstevel@tonic-gate if (ct == ZSD_SHUTDOWN && zsdp->zsd_shutdown == NULL) 7727c478bd9Sstevel@tonic-gate continue; 7737c478bd9Sstevel@tonic-gate if (ct == ZSD_DESTROY && zsdp->zsd_destroy == NULL) 7747c478bd9Sstevel@tonic-gate continue; 7757c478bd9Sstevel@tonic-gate /* 7767c478bd9Sstevel@tonic-gate * Call the callback with the zone-specific data if we can find 7777c478bd9Sstevel@tonic-gate * any, otherwise with NULL. 7787c478bd9Sstevel@tonic-gate */ 7797c478bd9Sstevel@tonic-gate t = zsd_find(&zone->zone_zsd, key); 7807c478bd9Sstevel@tonic-gate if (t != NULL) { 7817c478bd9Sstevel@tonic-gate if (ct == ZSD_SHUTDOWN) { 7827c478bd9Sstevel@tonic-gate t->zsd_shutdown(zoneid, t->zsd_data); 7837c478bd9Sstevel@tonic-gate } else { 7847c478bd9Sstevel@tonic-gate ASSERT(ct == ZSD_DESTROY); 7857c478bd9Sstevel@tonic-gate t->zsd_destroy(zoneid, t->zsd_data); 7867c478bd9Sstevel@tonic-gate } 7877c478bd9Sstevel@tonic-gate } else { 7887c478bd9Sstevel@tonic-gate if (ct == ZSD_SHUTDOWN) { 7897c478bd9Sstevel@tonic-gate zsdp->zsd_shutdown(zoneid, NULL); 7907c478bd9Sstevel@tonic-gate } else { 7917c478bd9Sstevel@tonic-gate ASSERT(ct == ZSD_DESTROY); 7927c478bd9Sstevel@tonic-gate zsdp->zsd_destroy(zoneid, NULL); 7937c478bd9Sstevel@tonic-gate } 7947c478bd9Sstevel@tonic-gate } 7957c478bd9Sstevel@tonic-gate } 7967c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 7977c478bd9Sstevel@tonic-gate } 7987c478bd9Sstevel@tonic-gate 7997c478bd9Sstevel@tonic-gate /* 8007c478bd9Sstevel@tonic-gate * Called when the zone is going away; free ZSD-related memory, and 8017c478bd9Sstevel@tonic-gate * destroy the zone_zsd list. 8027c478bd9Sstevel@tonic-gate */ 8037c478bd9Sstevel@tonic-gate static void 8047c478bd9Sstevel@tonic-gate zone_free_zsd(zone_t *zone) 8057c478bd9Sstevel@tonic-gate { 8067c478bd9Sstevel@tonic-gate struct zsd_entry *t, *next; 8077c478bd9Sstevel@tonic-gate 8087c478bd9Sstevel@tonic-gate /* 8097c478bd9Sstevel@tonic-gate * Free all the zsd_entry's we had on this zone. 8107c478bd9Sstevel@tonic-gate */ 8117c478bd9Sstevel@tonic-gate for (t = list_head(&zone->zone_zsd); t != NULL; t = next) { 8127c478bd9Sstevel@tonic-gate next = list_next(&zone->zone_zsd, t); 8137c478bd9Sstevel@tonic-gate list_remove(&zone->zone_zsd, t); 8147c478bd9Sstevel@tonic-gate kmem_free(t, sizeof (*t)); 8157c478bd9Sstevel@tonic-gate } 8167c478bd9Sstevel@tonic-gate list_destroy(&zone->zone_zsd); 8177c478bd9Sstevel@tonic-gate } 8187c478bd9Sstevel@tonic-gate 819fa9e4066Sahrens /* 820fa9e4066Sahrens * Frees memory associated with the zone dataset list. 821fa9e4066Sahrens */ 822fa9e4066Sahrens static void 823fa9e4066Sahrens zone_free_datasets(zone_t *zone) 824fa9e4066Sahrens { 825fa9e4066Sahrens zone_dataset_t *t, *next; 826fa9e4066Sahrens 827fa9e4066Sahrens for (t = list_head(&zone->zone_datasets); t != NULL; t = next) { 828fa9e4066Sahrens next = list_next(&zone->zone_datasets, t); 829fa9e4066Sahrens list_remove(&zone->zone_datasets, t); 830fa9e4066Sahrens kmem_free(t->zd_dataset, strlen(t->zd_dataset) + 1); 831fa9e4066Sahrens kmem_free(t, sizeof (*t)); 832fa9e4066Sahrens } 833fa9e4066Sahrens list_destroy(&zone->zone_datasets); 834fa9e4066Sahrens } 835fa9e4066Sahrens 8367c478bd9Sstevel@tonic-gate /* 8377c478bd9Sstevel@tonic-gate * zone.cpu-shares resource control support. 8387c478bd9Sstevel@tonic-gate */ 8397c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8407c478bd9Sstevel@tonic-gate static rctl_qty_t 8417c478bd9Sstevel@tonic-gate zone_cpu_shares_usage(rctl_t *rctl, struct proc *p) 8427c478bd9Sstevel@tonic-gate { 8437c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8447c478bd9Sstevel@tonic-gate return (p->p_zone->zone_shares); 8457c478bd9Sstevel@tonic-gate } 8467c478bd9Sstevel@tonic-gate 8477c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8487c478bd9Sstevel@tonic-gate static int 8497c478bd9Sstevel@tonic-gate zone_cpu_shares_set(rctl_t *rctl, struct proc *p, rctl_entity_p_t *e, 8507c478bd9Sstevel@tonic-gate rctl_qty_t nv) 8517c478bd9Sstevel@tonic-gate { 8527c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8537c478bd9Sstevel@tonic-gate ASSERT(e->rcep_t == RCENTITY_ZONE); 8547c478bd9Sstevel@tonic-gate if (e->rcep_p.zone == NULL) 8557c478bd9Sstevel@tonic-gate return (0); 8567c478bd9Sstevel@tonic-gate 8577c478bd9Sstevel@tonic-gate e->rcep_p.zone->zone_shares = nv; 8587c478bd9Sstevel@tonic-gate return (0); 8597c478bd9Sstevel@tonic-gate } 8607c478bd9Sstevel@tonic-gate 8617c478bd9Sstevel@tonic-gate static rctl_ops_t zone_cpu_shares_ops = { 8627c478bd9Sstevel@tonic-gate rcop_no_action, 8637c478bd9Sstevel@tonic-gate zone_cpu_shares_usage, 8647c478bd9Sstevel@tonic-gate zone_cpu_shares_set, 8657c478bd9Sstevel@tonic-gate rcop_no_test 8667c478bd9Sstevel@tonic-gate }; 8677c478bd9Sstevel@tonic-gate 8687c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8697c478bd9Sstevel@tonic-gate static rctl_qty_t 8707c478bd9Sstevel@tonic-gate zone_lwps_usage(rctl_t *r, proc_t *p) 8717c478bd9Sstevel@tonic-gate { 8727c478bd9Sstevel@tonic-gate rctl_qty_t nlwps; 8737c478bd9Sstevel@tonic-gate zone_t *zone = p->p_zone; 8747c478bd9Sstevel@tonic-gate 8757c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8767c478bd9Sstevel@tonic-gate 8777c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_nlwps_lock); 8787c478bd9Sstevel@tonic-gate nlwps = zone->zone_nlwps; 8797c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_nlwps_lock); 8807c478bd9Sstevel@tonic-gate 8817c478bd9Sstevel@tonic-gate return (nlwps); 8827c478bd9Sstevel@tonic-gate } 8837c478bd9Sstevel@tonic-gate 8847c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8857c478bd9Sstevel@tonic-gate static int 8867c478bd9Sstevel@tonic-gate zone_lwps_test(rctl_t *r, proc_t *p, rctl_entity_p_t *e, rctl_val_t *rcntl, 8877c478bd9Sstevel@tonic-gate rctl_qty_t incr, uint_t flags) 8887c478bd9Sstevel@tonic-gate { 8897c478bd9Sstevel@tonic-gate rctl_qty_t nlwps; 8907c478bd9Sstevel@tonic-gate 8917c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8927c478bd9Sstevel@tonic-gate ASSERT(e->rcep_t == RCENTITY_ZONE); 8937c478bd9Sstevel@tonic-gate if (e->rcep_p.zone == NULL) 8947c478bd9Sstevel@tonic-gate return (0); 8957c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&(e->rcep_p.zone->zone_nlwps_lock))); 8967c478bd9Sstevel@tonic-gate nlwps = e->rcep_p.zone->zone_nlwps; 8977c478bd9Sstevel@tonic-gate 8987c478bd9Sstevel@tonic-gate if (nlwps + incr > rcntl->rcv_value) 8997c478bd9Sstevel@tonic-gate return (1); 9007c478bd9Sstevel@tonic-gate 9017c478bd9Sstevel@tonic-gate return (0); 9027c478bd9Sstevel@tonic-gate } 9037c478bd9Sstevel@tonic-gate 9047c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 9057c478bd9Sstevel@tonic-gate static int 9067c478bd9Sstevel@tonic-gate zone_lwps_set(rctl_t *rctl, struct proc *p, rctl_entity_p_t *e, rctl_qty_t nv) { 9077c478bd9Sstevel@tonic-gate 9087c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 9097c478bd9Sstevel@tonic-gate ASSERT(e->rcep_t == RCENTITY_ZONE); 9107c478bd9Sstevel@tonic-gate if (e->rcep_p.zone == NULL) 9117c478bd9Sstevel@tonic-gate return (0); 9127c478bd9Sstevel@tonic-gate e->rcep_p.zone->zone_nlwps_ctl = nv; 9137c478bd9Sstevel@tonic-gate return (0); 9147c478bd9Sstevel@tonic-gate } 9157c478bd9Sstevel@tonic-gate 9167c478bd9Sstevel@tonic-gate static rctl_ops_t zone_lwps_ops = { 9177c478bd9Sstevel@tonic-gate rcop_no_action, 9187c478bd9Sstevel@tonic-gate zone_lwps_usage, 9197c478bd9Sstevel@tonic-gate zone_lwps_set, 9207c478bd9Sstevel@tonic-gate zone_lwps_test, 9217c478bd9Sstevel@tonic-gate }; 9227c478bd9Sstevel@tonic-gate 923824c205fSml /*ARGSUSED*/ 924824c205fSml static int 925824c205fSml zone_shmmax_test(rctl_t *r, proc_t *p, rctl_entity_p_t *e, rctl_val_t *rval, 926824c205fSml rctl_qty_t incr, uint_t flags) 927824c205fSml { 928824c205fSml rctl_qty_t v; 929824c205fSml ASSERT(MUTEX_HELD(&p->p_lock)); 930824c205fSml ASSERT(e->rcep_t == RCENTITY_ZONE); 931824c205fSml v = e->rcep_p.zone->zone_shmmax + incr; 932824c205fSml if (v > rval->rcv_value) 933824c205fSml return (1); 934824c205fSml return (0); 935824c205fSml } 936824c205fSml 937824c205fSml static rctl_ops_t zone_shmmax_ops = { 938824c205fSml rcop_no_action, 939824c205fSml rcop_no_usage, 940824c205fSml rcop_no_set, 941824c205fSml zone_shmmax_test 942824c205fSml }; 943824c205fSml 944824c205fSml /*ARGSUSED*/ 945824c205fSml static int 946824c205fSml zone_shmmni_test(rctl_t *r, proc_t *p, rctl_entity_p_t *e, rctl_val_t *rval, 947824c205fSml rctl_qty_t incr, uint_t flags) 948824c205fSml { 949824c205fSml rctl_qty_t v; 950824c205fSml ASSERT(MUTEX_HELD(&p->p_lock)); 951824c205fSml ASSERT(e->rcep_t == RCENTITY_ZONE); 952824c205fSml v = e->rcep_p.zone->zone_ipc.ipcq_shmmni + incr; 953824c205fSml if (v > rval->rcv_value) 954824c205fSml return (1); 955824c205fSml return (0); 956824c205fSml } 957824c205fSml 958824c205fSml static rctl_ops_t zone_shmmni_ops = { 959824c205fSml rcop_no_action, 960824c205fSml rcop_no_usage, 961824c205fSml rcop_no_set, 962824c205fSml zone_shmmni_test 963824c205fSml }; 964824c205fSml 965824c205fSml /*ARGSUSED*/ 966824c205fSml static int 967824c205fSml zone_semmni_test(rctl_t *r, proc_t *p, rctl_entity_p_t *e, rctl_val_t *rval, 968824c205fSml rctl_qty_t incr, uint_t flags) 969824c205fSml { 970824c205fSml rctl_qty_t v; 971824c205fSml ASSERT(MUTEX_HELD(&p->p_lock)); 972824c205fSml ASSERT(e->rcep_t == RCENTITY_ZONE); 973824c205fSml v = e->rcep_p.zone->zone_ipc.ipcq_semmni + incr; 974824c205fSml if (v > rval->rcv_value) 975824c205fSml return (1); 976824c205fSml return (0); 977824c205fSml } 978824c205fSml 979824c205fSml static rctl_ops_t zone_semmni_ops = { 980824c205fSml rcop_no_action, 981824c205fSml rcop_no_usage, 982824c205fSml rcop_no_set, 983824c205fSml zone_semmni_test 984824c205fSml }; 985824c205fSml 986824c205fSml /*ARGSUSED*/ 987824c205fSml static int 988824c205fSml zone_msgmni_test(rctl_t *r, proc_t *p, rctl_entity_p_t *e, rctl_val_t *rval, 989824c205fSml rctl_qty_t incr, uint_t flags) 990824c205fSml { 991824c205fSml rctl_qty_t v; 992824c205fSml ASSERT(MUTEX_HELD(&p->p_lock)); 993824c205fSml ASSERT(e->rcep_t == RCENTITY_ZONE); 994824c205fSml v = e->rcep_p.zone->zone_ipc.ipcq_msgmni + incr; 995824c205fSml if (v > rval->rcv_value) 996824c205fSml return (1); 997824c205fSml return (0); 998824c205fSml } 999824c205fSml 1000824c205fSml static rctl_ops_t zone_msgmni_ops = { 1001824c205fSml rcop_no_action, 1002824c205fSml rcop_no_usage, 1003824c205fSml rcop_no_set, 1004824c205fSml zone_msgmni_test 1005824c205fSml }; 1006824c205fSml 1007824c205fSml 10087c478bd9Sstevel@tonic-gate /* 10097c478bd9Sstevel@tonic-gate * Helper function to brand the zone with a unique ID. 10107c478bd9Sstevel@tonic-gate */ 10117c478bd9Sstevel@tonic-gate static void 10127c478bd9Sstevel@tonic-gate zone_uniqid(zone_t *zone) 10137c478bd9Sstevel@tonic-gate { 10147c478bd9Sstevel@tonic-gate static uint64_t uniqid = 0; 10157c478bd9Sstevel@tonic-gate 10167c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 10177c478bd9Sstevel@tonic-gate zone->zone_uniqid = uniqid++; 10187c478bd9Sstevel@tonic-gate } 10197c478bd9Sstevel@tonic-gate 10207c478bd9Sstevel@tonic-gate /* 10217c478bd9Sstevel@tonic-gate * Returns a held pointer to the "kcred" for the specified zone. 10227c478bd9Sstevel@tonic-gate */ 10237c478bd9Sstevel@tonic-gate struct cred * 10247c478bd9Sstevel@tonic-gate zone_get_kcred(zoneid_t zoneid) 10257c478bd9Sstevel@tonic-gate { 10267c478bd9Sstevel@tonic-gate zone_t *zone; 10277c478bd9Sstevel@tonic-gate cred_t *cr; 10287c478bd9Sstevel@tonic-gate 10297c478bd9Sstevel@tonic-gate if ((zone = zone_find_by_id(zoneid)) == NULL) 10307c478bd9Sstevel@tonic-gate return (NULL); 10317c478bd9Sstevel@tonic-gate cr = zone->zone_kcred; 10327c478bd9Sstevel@tonic-gate crhold(cr); 10337c478bd9Sstevel@tonic-gate zone_rele(zone); 10347c478bd9Sstevel@tonic-gate return (cr); 10357c478bd9Sstevel@tonic-gate } 10367c478bd9Sstevel@tonic-gate 10377c478bd9Sstevel@tonic-gate /* 10387c478bd9Sstevel@tonic-gate * Called very early on in boot to initialize the ZSD list so that 10397c478bd9Sstevel@tonic-gate * zone_key_create() can be called before zone_init(). It also initializes 10407c478bd9Sstevel@tonic-gate * portions of zone0 which may be used before zone_init() is called. The 10417c478bd9Sstevel@tonic-gate * variable "global_zone" will be set when zone0 is fully initialized by 10427c478bd9Sstevel@tonic-gate * zone_init(). 10437c478bd9Sstevel@tonic-gate */ 10447c478bd9Sstevel@tonic-gate void 10457c478bd9Sstevel@tonic-gate zone_zsd_init(void) 10467c478bd9Sstevel@tonic-gate { 10477c478bd9Sstevel@tonic-gate mutex_init(&zonehash_lock, NULL, MUTEX_DEFAULT, NULL); 10487c478bd9Sstevel@tonic-gate mutex_init(&zsd_key_lock, NULL, MUTEX_DEFAULT, NULL); 10497c478bd9Sstevel@tonic-gate list_create(&zsd_registered_keys, sizeof (struct zsd_entry), 10507c478bd9Sstevel@tonic-gate offsetof(struct zsd_entry, zsd_linkage)); 10517c478bd9Sstevel@tonic-gate list_create(&zone_active, sizeof (zone_t), 10527c478bd9Sstevel@tonic-gate offsetof(zone_t, zone_linkage)); 10537c478bd9Sstevel@tonic-gate list_create(&zone_deathrow, sizeof (zone_t), 10547c478bd9Sstevel@tonic-gate offsetof(zone_t, zone_linkage)); 10557c478bd9Sstevel@tonic-gate 10567c478bd9Sstevel@tonic-gate mutex_init(&zone0.zone_lock, NULL, MUTEX_DEFAULT, NULL); 10577c478bd9Sstevel@tonic-gate mutex_init(&zone0.zone_nlwps_lock, NULL, MUTEX_DEFAULT, NULL); 10587c478bd9Sstevel@tonic-gate zone0.zone_shares = 1; 10597c478bd9Sstevel@tonic-gate zone0.zone_nlwps_ctl = INT_MAX; 1060824c205fSml zone0.zone_shmmax = 0; 1061824c205fSml zone0.zone_ipc.ipcq_shmmni = 0; 1062824c205fSml zone0.zone_ipc.ipcq_semmni = 0; 1063824c205fSml zone0.zone_ipc.ipcq_msgmni = 0; 10647c478bd9Sstevel@tonic-gate zone0.zone_name = GLOBAL_ZONENAME; 10657c478bd9Sstevel@tonic-gate zone0.zone_nodename = utsname.nodename; 10667c478bd9Sstevel@tonic-gate zone0.zone_domain = srpc_domain; 10677c478bd9Sstevel@tonic-gate zone0.zone_ref = 1; 10687c478bd9Sstevel@tonic-gate zone0.zone_id = GLOBAL_ZONEID; 10697c478bd9Sstevel@tonic-gate zone0.zone_status = ZONE_IS_RUNNING; 10707c478bd9Sstevel@tonic-gate zone0.zone_rootpath = "/"; 10717c478bd9Sstevel@tonic-gate zone0.zone_rootpathlen = 2; 10727c478bd9Sstevel@tonic-gate zone0.zone_psetid = ZONE_PS_INVAL; 10737c478bd9Sstevel@tonic-gate zone0.zone_ncpus = 0; 10747c478bd9Sstevel@tonic-gate zone0.zone_ncpus_online = 0; 10757c478bd9Sstevel@tonic-gate zone0.zone_proc_initpid = 1; 10763f2f09c1Sdp zone0.zone_initname = initname; 10777c478bd9Sstevel@tonic-gate list_create(&zone0.zone_zsd, sizeof (struct zsd_entry), 10787c478bd9Sstevel@tonic-gate offsetof(struct zsd_entry, zsd_linkage)); 10797c478bd9Sstevel@tonic-gate list_insert_head(&zone_active, &zone0); 10807c478bd9Sstevel@tonic-gate 10817c478bd9Sstevel@tonic-gate /* 10827c478bd9Sstevel@tonic-gate * The root filesystem is not mounted yet, so zone_rootvp cannot be set 10837c478bd9Sstevel@tonic-gate * to anything meaningful. It is assigned to be 'rootdir' in 10847c478bd9Sstevel@tonic-gate * vfs_mountroot(). 10857c478bd9Sstevel@tonic-gate */ 10867c478bd9Sstevel@tonic-gate zone0.zone_rootvp = NULL; 10877c478bd9Sstevel@tonic-gate zone0.zone_vfslist = NULL; 10883f2f09c1Sdp zone0.zone_bootargs = initargs; 10897c478bd9Sstevel@tonic-gate zone0.zone_privset = kmem_alloc(sizeof (priv_set_t), KM_SLEEP); 10907c478bd9Sstevel@tonic-gate /* 10917c478bd9Sstevel@tonic-gate * The global zone has all privileges 10927c478bd9Sstevel@tonic-gate */ 10937c478bd9Sstevel@tonic-gate priv_fillset(zone0.zone_privset); 10947c478bd9Sstevel@tonic-gate /* 10957c478bd9Sstevel@tonic-gate * Add p0 to the global zone 10967c478bd9Sstevel@tonic-gate */ 10977c478bd9Sstevel@tonic-gate zone0.zone_zsched = &p0; 10987c478bd9Sstevel@tonic-gate p0.p_zone = &zone0; 10997c478bd9Sstevel@tonic-gate } 11007c478bd9Sstevel@tonic-gate 110145916cd2Sjpk /* 110245916cd2Sjpk * Compute a hash value based on the contents of the label and the DOI. The 110345916cd2Sjpk * hash algorithm is somewhat arbitrary, but is based on the observation that 110445916cd2Sjpk * humans will likely pick labels that differ by amounts that work out to be 110545916cd2Sjpk * multiples of the number of hash chains, and thus stirring in some primes 110645916cd2Sjpk * should help. 110745916cd2Sjpk */ 110845916cd2Sjpk static uint_t 110945916cd2Sjpk hash_bylabel(void *hdata, mod_hash_key_t key) 111045916cd2Sjpk { 111145916cd2Sjpk const ts_label_t *lab = (ts_label_t *)key; 111245916cd2Sjpk const uint32_t *up, *ue; 111345916cd2Sjpk uint_t hash; 111445916cd2Sjpk int i; 111545916cd2Sjpk 111645916cd2Sjpk _NOTE(ARGUNUSED(hdata)); 111745916cd2Sjpk 111845916cd2Sjpk hash = lab->tsl_doi + (lab->tsl_doi << 1); 111945916cd2Sjpk /* we depend on alignment of label, but not representation */ 112045916cd2Sjpk up = (const uint32_t *)&lab->tsl_label; 112145916cd2Sjpk ue = up + sizeof (lab->tsl_label) / sizeof (*up); 112245916cd2Sjpk i = 1; 112345916cd2Sjpk while (up < ue) { 112445916cd2Sjpk /* using 2^n + 1, 1 <= n <= 16 as source of many primes */ 112545916cd2Sjpk hash += *up + (*up << ((i % 16) + 1)); 112645916cd2Sjpk up++; 112745916cd2Sjpk i++; 112845916cd2Sjpk } 112945916cd2Sjpk return (hash); 113045916cd2Sjpk } 113145916cd2Sjpk 113245916cd2Sjpk /* 113345916cd2Sjpk * All that mod_hash cares about here is zero (equal) versus non-zero (not 113445916cd2Sjpk * equal). This may need to be changed if less than / greater than is ever 113545916cd2Sjpk * needed. 113645916cd2Sjpk */ 113745916cd2Sjpk static int 113845916cd2Sjpk hash_labelkey_cmp(mod_hash_key_t key1, mod_hash_key_t key2) 113945916cd2Sjpk { 114045916cd2Sjpk ts_label_t *lab1 = (ts_label_t *)key1; 114145916cd2Sjpk ts_label_t *lab2 = (ts_label_t *)key2; 114245916cd2Sjpk 114345916cd2Sjpk return (label_equal(lab1, lab2) ? 0 : 1); 114445916cd2Sjpk } 114545916cd2Sjpk 11467c478bd9Sstevel@tonic-gate /* 11477c478bd9Sstevel@tonic-gate * Called by main() to initialize the zones framework. 11487c478bd9Sstevel@tonic-gate */ 11497c478bd9Sstevel@tonic-gate void 11507c478bd9Sstevel@tonic-gate zone_init(void) 11517c478bd9Sstevel@tonic-gate { 11527c478bd9Sstevel@tonic-gate rctl_dict_entry_t *rde; 11537c478bd9Sstevel@tonic-gate rctl_val_t *dval; 11547c478bd9Sstevel@tonic-gate rctl_set_t *set; 11557c478bd9Sstevel@tonic-gate rctl_alloc_gp_t *gp; 11567c478bd9Sstevel@tonic-gate rctl_entity_p_t e; 1157cf8f45c7Sdstaff int res; 11587c478bd9Sstevel@tonic-gate 11597c478bd9Sstevel@tonic-gate ASSERT(curproc == &p0); 11607c478bd9Sstevel@tonic-gate 11617c478bd9Sstevel@tonic-gate /* 11627c478bd9Sstevel@tonic-gate * Create ID space for zone IDs. ID 0 is reserved for the 11637c478bd9Sstevel@tonic-gate * global zone. 11647c478bd9Sstevel@tonic-gate */ 11657c478bd9Sstevel@tonic-gate zoneid_space = id_space_create("zoneid_space", 1, MAX_ZONEID); 11667c478bd9Sstevel@tonic-gate 11677c478bd9Sstevel@tonic-gate /* 11687c478bd9Sstevel@tonic-gate * Initialize generic zone resource controls, if any. 11697c478bd9Sstevel@tonic-gate */ 11707c478bd9Sstevel@tonic-gate rc_zone_cpu_shares = rctl_register("zone.cpu-shares", 11717c478bd9Sstevel@tonic-gate RCENTITY_ZONE, RCTL_GLOBAL_SIGNAL_NEVER | RCTL_GLOBAL_DENY_NEVER | 117219f92332Sml RCTL_GLOBAL_NOBASIC | RCTL_GLOBAL_COUNT | RCTL_GLOBAL_SYSLOG_NEVER, 117319f92332Sml FSS_MAXSHARES, FSS_MAXSHARES, 11747c478bd9Sstevel@tonic-gate &zone_cpu_shares_ops); 11757c478bd9Sstevel@tonic-gate 11767c478bd9Sstevel@tonic-gate rc_zone_nlwps = rctl_register("zone.max-lwps", RCENTITY_ZONE, 11777c478bd9Sstevel@tonic-gate RCTL_GLOBAL_NOACTION | RCTL_GLOBAL_NOBASIC | RCTL_GLOBAL_COUNT, 11787c478bd9Sstevel@tonic-gate INT_MAX, INT_MAX, &zone_lwps_ops); 1179824c205fSml /* 1180824c205fSml * System V IPC resource controls 1181824c205fSml */ 1182824c205fSml rc_zone_msgmni = rctl_register("zone.max-msg-ids", 1183824c205fSml RCENTITY_ZONE, RCTL_GLOBAL_DENY_ALWAYS | RCTL_GLOBAL_NOBASIC | 1184824c205fSml RCTL_GLOBAL_COUNT, IPC_IDS_MAX, IPC_IDS_MAX, &zone_msgmni_ops); 1185824c205fSml 1186824c205fSml rc_zone_semmni = rctl_register("zone.max-sem-ids", 1187824c205fSml RCENTITY_ZONE, RCTL_GLOBAL_DENY_ALWAYS | RCTL_GLOBAL_NOBASIC | 1188824c205fSml RCTL_GLOBAL_COUNT, IPC_IDS_MAX, IPC_IDS_MAX, &zone_semmni_ops); 1189824c205fSml 1190824c205fSml rc_zone_shmmni = rctl_register("zone.max-shm-ids", 1191824c205fSml RCENTITY_ZONE, RCTL_GLOBAL_DENY_ALWAYS | RCTL_GLOBAL_NOBASIC | 1192824c205fSml RCTL_GLOBAL_COUNT, IPC_IDS_MAX, IPC_IDS_MAX, &zone_shmmni_ops); 1193824c205fSml 1194824c205fSml rc_zone_shmmax = rctl_register("zone.max-shm-memory", 1195824c205fSml RCENTITY_ZONE, RCTL_GLOBAL_DENY_ALWAYS | RCTL_GLOBAL_NOBASIC | 1196824c205fSml RCTL_GLOBAL_BYTES, UINT64_MAX, UINT64_MAX, &zone_shmmax_ops); 1197824c205fSml 11987c478bd9Sstevel@tonic-gate /* 11997c478bd9Sstevel@tonic-gate * Create a rctl_val with PRIVILEGED, NOACTION, value = 1. Then attach 12007c478bd9Sstevel@tonic-gate * this at the head of the rctl_dict_entry for ``zone.cpu-shares''. 12017c478bd9Sstevel@tonic-gate */ 12027c478bd9Sstevel@tonic-gate dval = kmem_cache_alloc(rctl_val_cache, KM_SLEEP); 12037c478bd9Sstevel@tonic-gate bzero(dval, sizeof (rctl_val_t)); 12047c478bd9Sstevel@tonic-gate dval->rcv_value = 1; 12057c478bd9Sstevel@tonic-gate dval->rcv_privilege = RCPRIV_PRIVILEGED; 12067c478bd9Sstevel@tonic-gate dval->rcv_flagaction = RCTL_LOCAL_NOACTION; 12077c478bd9Sstevel@tonic-gate dval->rcv_action_recip_pid = -1; 12087c478bd9Sstevel@tonic-gate 12097c478bd9Sstevel@tonic-gate rde = rctl_dict_lookup("zone.cpu-shares"); 12107c478bd9Sstevel@tonic-gate (void) rctl_val_list_insert(&rde->rcd_default_value, dval); 12117c478bd9Sstevel@tonic-gate 12127c478bd9Sstevel@tonic-gate /* 12137c478bd9Sstevel@tonic-gate * Initialize the ``global zone''. 12147c478bd9Sstevel@tonic-gate */ 12157c478bd9Sstevel@tonic-gate set = rctl_set_create(); 12167c478bd9Sstevel@tonic-gate gp = rctl_set_init_prealloc(RCENTITY_ZONE); 12177c478bd9Sstevel@tonic-gate mutex_enter(&p0.p_lock); 12187c478bd9Sstevel@tonic-gate e.rcep_p.zone = &zone0; 12197c478bd9Sstevel@tonic-gate e.rcep_t = RCENTITY_ZONE; 12207c478bd9Sstevel@tonic-gate zone0.zone_rctls = rctl_set_init(RCENTITY_ZONE, &p0, &e, set, 12217c478bd9Sstevel@tonic-gate gp); 12227c478bd9Sstevel@tonic-gate 12237c478bd9Sstevel@tonic-gate zone0.zone_nlwps = p0.p_lwpcnt; 12247c478bd9Sstevel@tonic-gate zone0.zone_ntasks = 1; 12257c478bd9Sstevel@tonic-gate mutex_exit(&p0.p_lock); 1226*9acbbeafSnn zone0.zone_restart_init = B_TRUE; 1227*9acbbeafSnn zone0.zone_brand = &native_brand; 12287c478bd9Sstevel@tonic-gate rctl_prealloc_destroy(gp); 12297c478bd9Sstevel@tonic-gate /* 12307c478bd9Sstevel@tonic-gate * pool_default hasn't been initialized yet, so we let pool_init() take 12317c478bd9Sstevel@tonic-gate * care of making the global zone is in the default pool. 12327c478bd9Sstevel@tonic-gate */ 123345916cd2Sjpk 123445916cd2Sjpk /* 123545916cd2Sjpk * Initialize zone label. 123645916cd2Sjpk * mlp are initialized when tnzonecfg is loaded. 123745916cd2Sjpk */ 123845916cd2Sjpk zone0.zone_slabel = l_admin_low; 123945916cd2Sjpk rw_init(&zone0.zone_mlps.mlpl_rwlock, NULL, RW_DEFAULT, NULL); 124045916cd2Sjpk label_hold(l_admin_low); 124145916cd2Sjpk 12427c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 12437c478bd9Sstevel@tonic-gate zone_uniqid(&zone0); 12447c478bd9Sstevel@tonic-gate ASSERT(zone0.zone_uniqid == GLOBAL_ZONEUNIQID); 124545916cd2Sjpk 12467c478bd9Sstevel@tonic-gate zonehashbyid = mod_hash_create_idhash("zone_by_id", zone_hash_size, 12477c478bd9Sstevel@tonic-gate mod_hash_null_valdtor); 12487c478bd9Sstevel@tonic-gate zonehashbyname = mod_hash_create_strhash("zone_by_name", 12497c478bd9Sstevel@tonic-gate zone_hash_size, mod_hash_null_valdtor); 125045916cd2Sjpk /* 125145916cd2Sjpk * maintain zonehashbylabel only for labeled systems 125245916cd2Sjpk */ 125345916cd2Sjpk if (is_system_labeled()) 125445916cd2Sjpk zonehashbylabel = mod_hash_create_extended("zone_by_label", 125545916cd2Sjpk zone_hash_size, mod_hash_null_keydtor, 125645916cd2Sjpk mod_hash_null_valdtor, hash_bylabel, NULL, 125745916cd2Sjpk hash_labelkey_cmp, KM_SLEEP); 12587c478bd9Sstevel@tonic-gate zonecount = 1; 12597c478bd9Sstevel@tonic-gate 12607c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyid, (mod_hash_key_t)GLOBAL_ZONEID, 12617c478bd9Sstevel@tonic-gate (mod_hash_val_t)&zone0); 12627c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyname, (mod_hash_key_t)zone0.zone_name, 12637c478bd9Sstevel@tonic-gate (mod_hash_val_t)&zone0); 126448451833Scarlsonj if (is_system_labeled()) { 126548451833Scarlsonj zone0.zone_flags |= ZF_HASHED_LABEL; 126645916cd2Sjpk (void) mod_hash_insert(zonehashbylabel, 126745916cd2Sjpk (mod_hash_key_t)zone0.zone_slabel, (mod_hash_val_t)&zone0); 126848451833Scarlsonj } 126945916cd2Sjpk mutex_exit(&zonehash_lock); 127045916cd2Sjpk 12717c478bd9Sstevel@tonic-gate /* 12727c478bd9Sstevel@tonic-gate * We avoid setting zone_kcred until now, since kcred is initialized 12737c478bd9Sstevel@tonic-gate * sometime after zone_zsd_init() and before zone_init(). 12747c478bd9Sstevel@tonic-gate */ 12757c478bd9Sstevel@tonic-gate zone0.zone_kcred = kcred; 12767c478bd9Sstevel@tonic-gate /* 12777c478bd9Sstevel@tonic-gate * The global zone is fully initialized (except for zone_rootvp which 12787c478bd9Sstevel@tonic-gate * will be set when the root filesystem is mounted). 12797c478bd9Sstevel@tonic-gate */ 12807c478bd9Sstevel@tonic-gate global_zone = &zone0; 1281cf8f45c7Sdstaff 1282cf8f45c7Sdstaff /* 1283cf8f45c7Sdstaff * Setup an event channel to send zone status change notifications on 1284cf8f45c7Sdstaff */ 1285cf8f45c7Sdstaff res = sysevent_evc_bind(ZONE_EVENT_CHANNEL, &zone_event_chan, 1286cf8f45c7Sdstaff EVCH_CREAT); 1287cf8f45c7Sdstaff 1288cf8f45c7Sdstaff if (res) 1289cf8f45c7Sdstaff panic("Sysevent_evc_bind failed during zone setup.\n"); 12907c478bd9Sstevel@tonic-gate } 12917c478bd9Sstevel@tonic-gate 12927c478bd9Sstevel@tonic-gate static void 12937c478bd9Sstevel@tonic-gate zone_free(zone_t *zone) 12947c478bd9Sstevel@tonic-gate { 12957c478bd9Sstevel@tonic-gate ASSERT(zone != global_zone); 12967c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ntasks == 0); 12977c478bd9Sstevel@tonic-gate ASSERT(zone->zone_nlwps == 0); 12987c478bd9Sstevel@tonic-gate ASSERT(zone->zone_cred_ref == 0); 12997c478bd9Sstevel@tonic-gate ASSERT(zone->zone_kcred == NULL); 13007c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) == ZONE_IS_DEAD || 13017c478bd9Sstevel@tonic-gate zone_status_get(zone) == ZONE_IS_UNINITIALIZED); 13027c478bd9Sstevel@tonic-gate 13037c478bd9Sstevel@tonic-gate /* remove from deathrow list */ 13047c478bd9Sstevel@tonic-gate if (zone_status_get(zone) == ZONE_IS_DEAD) { 13057c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ref == 0); 13067c478bd9Sstevel@tonic-gate mutex_enter(&zone_deathrow_lock); 13077c478bd9Sstevel@tonic-gate list_remove(&zone_deathrow, zone); 13087c478bd9Sstevel@tonic-gate mutex_exit(&zone_deathrow_lock); 13097c478bd9Sstevel@tonic-gate } 13107c478bd9Sstevel@tonic-gate 13117c478bd9Sstevel@tonic-gate zone_free_zsd(zone); 1312fa9e4066Sahrens zone_free_datasets(zone); 13137c478bd9Sstevel@tonic-gate 13147c478bd9Sstevel@tonic-gate if (zone->zone_rootvp != NULL) 13157c478bd9Sstevel@tonic-gate VN_RELE(zone->zone_rootvp); 13167c478bd9Sstevel@tonic-gate if (zone->zone_rootpath) 13177c478bd9Sstevel@tonic-gate kmem_free(zone->zone_rootpath, zone->zone_rootpathlen); 13187c478bd9Sstevel@tonic-gate if (zone->zone_name != NULL) 13197c478bd9Sstevel@tonic-gate kmem_free(zone->zone_name, ZONENAME_MAX); 132045916cd2Sjpk if (zone->zone_slabel != NULL) 132145916cd2Sjpk label_rele(zone->zone_slabel); 13227c478bd9Sstevel@tonic-gate if (zone->zone_nodename != NULL) 13237c478bd9Sstevel@tonic-gate kmem_free(zone->zone_nodename, _SYS_NMLN); 13247c478bd9Sstevel@tonic-gate if (zone->zone_domain != NULL) 13257c478bd9Sstevel@tonic-gate kmem_free(zone->zone_domain, _SYS_NMLN); 13267c478bd9Sstevel@tonic-gate if (zone->zone_privset != NULL) 13277c478bd9Sstevel@tonic-gate kmem_free(zone->zone_privset, sizeof (priv_set_t)); 13287c478bd9Sstevel@tonic-gate if (zone->zone_rctls != NULL) 13297c478bd9Sstevel@tonic-gate rctl_set_free(zone->zone_rctls); 13307c478bd9Sstevel@tonic-gate if (zone->zone_bootargs != NULL) 13313f2f09c1Sdp kmem_free(zone->zone_bootargs, strlen(zone->zone_bootargs) + 1); 13323f2f09c1Sdp if (zone->zone_initname != NULL) 13333f2f09c1Sdp kmem_free(zone->zone_initname, strlen(zone->zone_initname) + 1); 13347c478bd9Sstevel@tonic-gate id_free(zoneid_space, zone->zone_id); 13357c478bd9Sstevel@tonic-gate mutex_destroy(&zone->zone_lock); 13367c478bd9Sstevel@tonic-gate cv_destroy(&zone->zone_cv); 133745916cd2Sjpk rw_destroy(&zone->zone_mlps.mlpl_rwlock); 13387c478bd9Sstevel@tonic-gate kmem_free(zone, sizeof (zone_t)); 13397c478bd9Sstevel@tonic-gate } 13407c478bd9Sstevel@tonic-gate 13417c478bd9Sstevel@tonic-gate /* 13427c478bd9Sstevel@tonic-gate * See block comment at the top of this file for information about zone 13437c478bd9Sstevel@tonic-gate * status values. 13447c478bd9Sstevel@tonic-gate */ 13457c478bd9Sstevel@tonic-gate /* 13467c478bd9Sstevel@tonic-gate * Convenience function for setting zone status. 13477c478bd9Sstevel@tonic-gate */ 13487c478bd9Sstevel@tonic-gate static void 13497c478bd9Sstevel@tonic-gate zone_status_set(zone_t *zone, zone_status_t status) 13507c478bd9Sstevel@tonic-gate { 1351cf8f45c7Sdstaff 1352cf8f45c7Sdstaff nvlist_t *nvl = NULL; 13537c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zone_status_lock)); 13547c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE && 13557c478bd9Sstevel@tonic-gate status >= zone_status_get(zone)); 1356cf8f45c7Sdstaff 1357cf8f45c7Sdstaff if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) || 1358cf8f45c7Sdstaff nvlist_add_string(nvl, ZONE_CB_NAME, zone->zone_name) || 1359cf8f45c7Sdstaff nvlist_add_string(nvl, ZONE_CB_NEWSTATE, 13603f2f09c1Sdp zone_status_table[status]) || 1361cf8f45c7Sdstaff nvlist_add_string(nvl, ZONE_CB_OLDSTATE, 13623f2f09c1Sdp zone_status_table[zone->zone_status]) || 1363cf8f45c7Sdstaff nvlist_add_int32(nvl, ZONE_CB_ZONEID, zone->zone_id) || 1364cf8f45c7Sdstaff nvlist_add_uint64(nvl, ZONE_CB_TIMESTAMP, (uint64_t)gethrtime()) || 1365cf8f45c7Sdstaff sysevent_evc_publish(zone_event_chan, ZONE_EVENT_STATUS_CLASS, 13663f2f09c1Sdp ZONE_EVENT_STATUS_SUBCLASS, "sun.com", "kernel", nvl, EVCH_SLEEP)) { 1367cf8f45c7Sdstaff #ifdef DEBUG 1368cf8f45c7Sdstaff (void) printf( 1369cf8f45c7Sdstaff "Failed to allocate and send zone state change event.\n"); 1370cf8f45c7Sdstaff #endif 1371cf8f45c7Sdstaff } 1372cf8f45c7Sdstaff nvlist_free(nvl); 1373cf8f45c7Sdstaff 13747c478bd9Sstevel@tonic-gate zone->zone_status = status; 1375cf8f45c7Sdstaff 13767c478bd9Sstevel@tonic-gate cv_broadcast(&zone->zone_cv); 13777c478bd9Sstevel@tonic-gate } 13787c478bd9Sstevel@tonic-gate 13797c478bd9Sstevel@tonic-gate /* 13807c478bd9Sstevel@tonic-gate * Public function to retrieve the zone status. The zone status may 13817c478bd9Sstevel@tonic-gate * change after it is retrieved. 13827c478bd9Sstevel@tonic-gate */ 13837c478bd9Sstevel@tonic-gate zone_status_t 13847c478bd9Sstevel@tonic-gate zone_status_get(zone_t *zone) 13857c478bd9Sstevel@tonic-gate { 13867c478bd9Sstevel@tonic-gate return (zone->zone_status); 13877c478bd9Sstevel@tonic-gate } 13887c478bd9Sstevel@tonic-gate 13897c478bd9Sstevel@tonic-gate static int 13907c478bd9Sstevel@tonic-gate zone_set_bootargs(zone_t *zone, const char *zone_bootargs) 13917c478bd9Sstevel@tonic-gate { 13923f2f09c1Sdp char *bootargs = kmem_zalloc(BOOTARGS_MAX, KM_SLEEP); 13933f2f09c1Sdp int err = 0; 13943f2f09c1Sdp 13953f2f09c1Sdp ASSERT(zone != global_zone); 13963f2f09c1Sdp if ((err = copyinstr(zone_bootargs, bootargs, BOOTARGS_MAX, NULL)) != 0) 13973f2f09c1Sdp goto done; /* EFAULT or ENAMETOOLONG */ 13983f2f09c1Sdp 13993f2f09c1Sdp if (zone->zone_bootargs != NULL) 14003f2f09c1Sdp kmem_free(zone->zone_bootargs, strlen(zone->zone_bootargs) + 1); 14013f2f09c1Sdp 14023f2f09c1Sdp zone->zone_bootargs = kmem_alloc(strlen(bootargs) + 1, KM_SLEEP); 14033f2f09c1Sdp (void) strcpy(zone->zone_bootargs, bootargs); 14043f2f09c1Sdp 14053f2f09c1Sdp done: 14063f2f09c1Sdp kmem_free(bootargs, BOOTARGS_MAX); 14073f2f09c1Sdp return (err); 14083f2f09c1Sdp } 14093f2f09c1Sdp 14103f2f09c1Sdp static int 14113f2f09c1Sdp zone_set_initname(zone_t *zone, const char *zone_initname) 14123f2f09c1Sdp { 14133f2f09c1Sdp char initname[INITNAME_SZ]; 14147c478bd9Sstevel@tonic-gate size_t len; 14153f2f09c1Sdp int err = 0; 14167c478bd9Sstevel@tonic-gate 14173f2f09c1Sdp ASSERT(zone != global_zone); 14183f2f09c1Sdp if ((err = copyinstr(zone_initname, initname, INITNAME_SZ, &len)) != 0) 14197c478bd9Sstevel@tonic-gate return (err); /* EFAULT or ENAMETOOLONG */ 14207c478bd9Sstevel@tonic-gate 14213f2f09c1Sdp if (zone->zone_initname != NULL) 14223f2f09c1Sdp kmem_free(zone->zone_initname, strlen(zone->zone_initname) + 1); 14233f2f09c1Sdp 14243f2f09c1Sdp zone->zone_initname = kmem_alloc(strlen(initname) + 1, KM_SLEEP); 14253f2f09c1Sdp (void) strcpy(zone->zone_initname, initname); 14267c478bd9Sstevel@tonic-gate return (0); 14277c478bd9Sstevel@tonic-gate } 14287c478bd9Sstevel@tonic-gate 14297c478bd9Sstevel@tonic-gate /* 14307c478bd9Sstevel@tonic-gate * Block indefinitely waiting for (zone_status >= status) 14317c478bd9Sstevel@tonic-gate */ 14327c478bd9Sstevel@tonic-gate void 14337c478bd9Sstevel@tonic-gate zone_status_wait(zone_t *zone, zone_status_t status) 14347c478bd9Sstevel@tonic-gate { 14357c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 14367c478bd9Sstevel@tonic-gate 14377c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 14387c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 14397c478bd9Sstevel@tonic-gate cv_wait(&zone->zone_cv, &zone_status_lock); 14407c478bd9Sstevel@tonic-gate } 14417c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 14427c478bd9Sstevel@tonic-gate } 14437c478bd9Sstevel@tonic-gate 14447c478bd9Sstevel@tonic-gate /* 14457c478bd9Sstevel@tonic-gate * Private CPR-safe version of zone_status_wait(). 14467c478bd9Sstevel@tonic-gate */ 14477c478bd9Sstevel@tonic-gate static void 14487c478bd9Sstevel@tonic-gate zone_status_wait_cpr(zone_t *zone, zone_status_t status, char *str) 14497c478bd9Sstevel@tonic-gate { 14507c478bd9Sstevel@tonic-gate callb_cpr_t cprinfo; 14517c478bd9Sstevel@tonic-gate 14527c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 14537c478bd9Sstevel@tonic-gate 14547c478bd9Sstevel@tonic-gate CALLB_CPR_INIT(&cprinfo, &zone_status_lock, callb_generic_cpr, 14557c478bd9Sstevel@tonic-gate str); 14567c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 14577c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 14587c478bd9Sstevel@tonic-gate CALLB_CPR_SAFE_BEGIN(&cprinfo); 14597c478bd9Sstevel@tonic-gate cv_wait(&zone->zone_cv, &zone_status_lock); 14607c478bd9Sstevel@tonic-gate CALLB_CPR_SAFE_END(&cprinfo, &zone_status_lock); 14617c478bd9Sstevel@tonic-gate } 14627c478bd9Sstevel@tonic-gate /* 14637c478bd9Sstevel@tonic-gate * zone_status_lock is implicitly released by the following. 14647c478bd9Sstevel@tonic-gate */ 14657c478bd9Sstevel@tonic-gate CALLB_CPR_EXIT(&cprinfo); 14667c478bd9Sstevel@tonic-gate } 14677c478bd9Sstevel@tonic-gate 14687c478bd9Sstevel@tonic-gate /* 14697c478bd9Sstevel@tonic-gate * Block until zone enters requested state or signal is received. Return (0) 14707c478bd9Sstevel@tonic-gate * if signaled, non-zero otherwise. 14717c478bd9Sstevel@tonic-gate */ 14727c478bd9Sstevel@tonic-gate int 14737c478bd9Sstevel@tonic-gate zone_status_wait_sig(zone_t *zone, zone_status_t status) 14747c478bd9Sstevel@tonic-gate { 14757c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 14767c478bd9Sstevel@tonic-gate 14777c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 14787c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 14797c478bd9Sstevel@tonic-gate if (!cv_wait_sig(&zone->zone_cv, &zone_status_lock)) { 14807c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 14817c478bd9Sstevel@tonic-gate return (0); 14827c478bd9Sstevel@tonic-gate } 14837c478bd9Sstevel@tonic-gate } 14847c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 14857c478bd9Sstevel@tonic-gate return (1); 14867c478bd9Sstevel@tonic-gate } 14877c478bd9Sstevel@tonic-gate 14887c478bd9Sstevel@tonic-gate /* 14897c478bd9Sstevel@tonic-gate * Block until the zone enters the requested state or the timeout expires, 14907c478bd9Sstevel@tonic-gate * whichever happens first. Return (-1) if operation timed out, time remaining 14917c478bd9Sstevel@tonic-gate * otherwise. 14927c478bd9Sstevel@tonic-gate */ 14937c478bd9Sstevel@tonic-gate clock_t 14947c478bd9Sstevel@tonic-gate zone_status_timedwait(zone_t *zone, clock_t tim, zone_status_t status) 14957c478bd9Sstevel@tonic-gate { 14967c478bd9Sstevel@tonic-gate clock_t timeleft = 0; 14977c478bd9Sstevel@tonic-gate 14987c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 14997c478bd9Sstevel@tonic-gate 15007c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 15017c478bd9Sstevel@tonic-gate while (zone->zone_status < status && timeleft != -1) { 15027c478bd9Sstevel@tonic-gate timeleft = cv_timedwait(&zone->zone_cv, &zone_status_lock, tim); 15037c478bd9Sstevel@tonic-gate } 15047c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 15057c478bd9Sstevel@tonic-gate return (timeleft); 15067c478bd9Sstevel@tonic-gate } 15077c478bd9Sstevel@tonic-gate 15087c478bd9Sstevel@tonic-gate /* 15097c478bd9Sstevel@tonic-gate * Block until the zone enters the requested state, the current process is 15107c478bd9Sstevel@tonic-gate * signaled, or the timeout expires, whichever happens first. Return (-1) if 15117c478bd9Sstevel@tonic-gate * operation timed out, 0 if signaled, time remaining otherwise. 15127c478bd9Sstevel@tonic-gate */ 15137c478bd9Sstevel@tonic-gate clock_t 15147c478bd9Sstevel@tonic-gate zone_status_timedwait_sig(zone_t *zone, clock_t tim, zone_status_t status) 15157c478bd9Sstevel@tonic-gate { 15167c478bd9Sstevel@tonic-gate clock_t timeleft = tim - lbolt; 15177c478bd9Sstevel@tonic-gate 15187c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 15197c478bd9Sstevel@tonic-gate 15207c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 15217c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 15227c478bd9Sstevel@tonic-gate timeleft = cv_timedwait_sig(&zone->zone_cv, &zone_status_lock, 15237c478bd9Sstevel@tonic-gate tim); 15247c478bd9Sstevel@tonic-gate if (timeleft <= 0) 15257c478bd9Sstevel@tonic-gate break; 15267c478bd9Sstevel@tonic-gate } 15277c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 15287c478bd9Sstevel@tonic-gate return (timeleft); 15297c478bd9Sstevel@tonic-gate } 15307c478bd9Sstevel@tonic-gate 15317c478bd9Sstevel@tonic-gate /* 15327c478bd9Sstevel@tonic-gate * Zones have two reference counts: one for references from credential 15337c478bd9Sstevel@tonic-gate * structures (zone_cred_ref), and one (zone_ref) for everything else. 15347c478bd9Sstevel@tonic-gate * This is so we can allow a zone to be rebooted while there are still 15357c478bd9Sstevel@tonic-gate * outstanding cred references, since certain drivers cache dblks (which 15367c478bd9Sstevel@tonic-gate * implicitly results in cached creds). We wait for zone_ref to drop to 15377c478bd9Sstevel@tonic-gate * 0 (actually 1), but not zone_cred_ref. The zone structure itself is 15387c478bd9Sstevel@tonic-gate * later freed when the zone_cred_ref drops to 0, though nothing other 15397c478bd9Sstevel@tonic-gate * than the zone id and privilege set should be accessed once the zone 15407c478bd9Sstevel@tonic-gate * is "dead". 15417c478bd9Sstevel@tonic-gate * 15427c478bd9Sstevel@tonic-gate * A debugging flag, zone_wait_for_cred, can be set to a non-zero value 15437c478bd9Sstevel@tonic-gate * to force halt/reboot to block waiting for the zone_cred_ref to drop 15447c478bd9Sstevel@tonic-gate * to 0. This can be useful to flush out other sources of cached creds 15457c478bd9Sstevel@tonic-gate * that may be less innocuous than the driver case. 15467c478bd9Sstevel@tonic-gate */ 15477c478bd9Sstevel@tonic-gate 15487c478bd9Sstevel@tonic-gate int zone_wait_for_cred = 0; 15497c478bd9Sstevel@tonic-gate 15507c478bd9Sstevel@tonic-gate static void 15517c478bd9Sstevel@tonic-gate zone_hold_locked(zone_t *z) 15527c478bd9Sstevel@tonic-gate { 15537c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&z->zone_lock)); 15547c478bd9Sstevel@tonic-gate z->zone_ref++; 15557c478bd9Sstevel@tonic-gate ASSERT(z->zone_ref != 0); 15567c478bd9Sstevel@tonic-gate } 15577c478bd9Sstevel@tonic-gate 15587c478bd9Sstevel@tonic-gate void 15597c478bd9Sstevel@tonic-gate zone_hold(zone_t *z) 15607c478bd9Sstevel@tonic-gate { 15617c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 15627c478bd9Sstevel@tonic-gate zone_hold_locked(z); 15637c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 15647c478bd9Sstevel@tonic-gate } 15657c478bd9Sstevel@tonic-gate 15667c478bd9Sstevel@tonic-gate /* 15677c478bd9Sstevel@tonic-gate * If the non-cred ref count drops to 1 and either the cred ref count 15687c478bd9Sstevel@tonic-gate * is 0 or we aren't waiting for cred references, the zone is ready to 15697c478bd9Sstevel@tonic-gate * be destroyed. 15707c478bd9Sstevel@tonic-gate */ 15717c478bd9Sstevel@tonic-gate #define ZONE_IS_UNREF(zone) ((zone)->zone_ref == 1 && \ 15727c478bd9Sstevel@tonic-gate (!zone_wait_for_cred || (zone)->zone_cred_ref == 0)) 15737c478bd9Sstevel@tonic-gate 15747c478bd9Sstevel@tonic-gate void 15757c478bd9Sstevel@tonic-gate zone_rele(zone_t *z) 15767c478bd9Sstevel@tonic-gate { 15777c478bd9Sstevel@tonic-gate boolean_t wakeup; 15787c478bd9Sstevel@tonic-gate 15797c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 15807c478bd9Sstevel@tonic-gate ASSERT(z->zone_ref != 0); 15817c478bd9Sstevel@tonic-gate z->zone_ref--; 15827c478bd9Sstevel@tonic-gate if (z->zone_ref == 0 && z->zone_cred_ref == 0) { 15837c478bd9Sstevel@tonic-gate /* no more refs, free the structure */ 15847c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 15857c478bd9Sstevel@tonic-gate zone_free(z); 15867c478bd9Sstevel@tonic-gate return; 15877c478bd9Sstevel@tonic-gate } 15887c478bd9Sstevel@tonic-gate /* signal zone_destroy so the zone can finish halting */ 15897c478bd9Sstevel@tonic-gate wakeup = (ZONE_IS_UNREF(z) && zone_status_get(z) >= ZONE_IS_DEAD); 15907c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 15917c478bd9Sstevel@tonic-gate 15927c478bd9Sstevel@tonic-gate if (wakeup) { 15937c478bd9Sstevel@tonic-gate /* 15947c478bd9Sstevel@tonic-gate * Grabbing zonehash_lock here effectively synchronizes with 15957c478bd9Sstevel@tonic-gate * zone_destroy() to avoid missed signals. 15967c478bd9Sstevel@tonic-gate */ 15977c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 15987c478bd9Sstevel@tonic-gate cv_broadcast(&zone_destroy_cv); 15997c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 16007c478bd9Sstevel@tonic-gate } 16017c478bd9Sstevel@tonic-gate } 16027c478bd9Sstevel@tonic-gate 16037c478bd9Sstevel@tonic-gate void 16047c478bd9Sstevel@tonic-gate zone_cred_hold(zone_t *z) 16057c478bd9Sstevel@tonic-gate { 16067c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 16077c478bd9Sstevel@tonic-gate z->zone_cred_ref++; 16087c478bd9Sstevel@tonic-gate ASSERT(z->zone_cred_ref != 0); 16097c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 16107c478bd9Sstevel@tonic-gate } 16117c478bd9Sstevel@tonic-gate 16127c478bd9Sstevel@tonic-gate void 16137c478bd9Sstevel@tonic-gate zone_cred_rele(zone_t *z) 16147c478bd9Sstevel@tonic-gate { 16157c478bd9Sstevel@tonic-gate boolean_t wakeup; 16167c478bd9Sstevel@tonic-gate 16177c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 16187c478bd9Sstevel@tonic-gate ASSERT(z->zone_cred_ref != 0); 16197c478bd9Sstevel@tonic-gate z->zone_cred_ref--; 16207c478bd9Sstevel@tonic-gate if (z->zone_ref == 0 && z->zone_cred_ref == 0) { 16217c478bd9Sstevel@tonic-gate /* no more refs, free the structure */ 16227c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 16237c478bd9Sstevel@tonic-gate zone_free(z); 16247c478bd9Sstevel@tonic-gate return; 16257c478bd9Sstevel@tonic-gate } 16267c478bd9Sstevel@tonic-gate /* 16277c478bd9Sstevel@tonic-gate * If zone_destroy is waiting for the cred references to drain 16287c478bd9Sstevel@tonic-gate * out, and they have, signal it. 16297c478bd9Sstevel@tonic-gate */ 16307c478bd9Sstevel@tonic-gate wakeup = (zone_wait_for_cred && ZONE_IS_UNREF(z) && 16317c478bd9Sstevel@tonic-gate zone_status_get(z) >= ZONE_IS_DEAD); 16327c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 16337c478bd9Sstevel@tonic-gate 16347c478bd9Sstevel@tonic-gate if (wakeup) { 16357c478bd9Sstevel@tonic-gate /* 16367c478bd9Sstevel@tonic-gate * Grabbing zonehash_lock here effectively synchronizes with 16377c478bd9Sstevel@tonic-gate * zone_destroy() to avoid missed signals. 16387c478bd9Sstevel@tonic-gate */ 16397c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 16407c478bd9Sstevel@tonic-gate cv_broadcast(&zone_destroy_cv); 16417c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 16427c478bd9Sstevel@tonic-gate } 16437c478bd9Sstevel@tonic-gate } 16447c478bd9Sstevel@tonic-gate 16457c478bd9Sstevel@tonic-gate void 16467c478bd9Sstevel@tonic-gate zone_task_hold(zone_t *z) 16477c478bd9Sstevel@tonic-gate { 16487c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 16497c478bd9Sstevel@tonic-gate z->zone_ntasks++; 16507c478bd9Sstevel@tonic-gate ASSERT(z->zone_ntasks != 0); 16517c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 16527c478bd9Sstevel@tonic-gate } 16537c478bd9Sstevel@tonic-gate 16547c478bd9Sstevel@tonic-gate void 16557c478bd9Sstevel@tonic-gate zone_task_rele(zone_t *zone) 16567c478bd9Sstevel@tonic-gate { 16577c478bd9Sstevel@tonic-gate uint_t refcnt; 16587c478bd9Sstevel@tonic-gate 16597c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 16607c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ntasks != 0); 16617c478bd9Sstevel@tonic-gate refcnt = --zone->zone_ntasks; 16627c478bd9Sstevel@tonic-gate if (refcnt > 1) { /* Common case */ 16637c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 16647c478bd9Sstevel@tonic-gate return; 16657c478bd9Sstevel@tonic-gate } 16667c478bd9Sstevel@tonic-gate zone_hold_locked(zone); /* so we can use the zone_t later */ 16677c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 16687c478bd9Sstevel@tonic-gate if (refcnt == 1) { 16697c478bd9Sstevel@tonic-gate /* 16707c478bd9Sstevel@tonic-gate * See if the zone is shutting down. 16717c478bd9Sstevel@tonic-gate */ 16727c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 16737c478bd9Sstevel@tonic-gate if (zone_status_get(zone) != ZONE_IS_SHUTTING_DOWN) { 16747c478bd9Sstevel@tonic-gate goto out; 16757c478bd9Sstevel@tonic-gate } 16767c478bd9Sstevel@tonic-gate 16777c478bd9Sstevel@tonic-gate /* 16787c478bd9Sstevel@tonic-gate * Make sure the ntasks didn't change since we 16797c478bd9Sstevel@tonic-gate * dropped zone_lock. 16807c478bd9Sstevel@tonic-gate */ 16817c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 16827c478bd9Sstevel@tonic-gate if (refcnt != zone->zone_ntasks) { 16837c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 16847c478bd9Sstevel@tonic-gate goto out; 16857c478bd9Sstevel@tonic-gate } 16867c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 16877c478bd9Sstevel@tonic-gate 16887c478bd9Sstevel@tonic-gate /* 16897c478bd9Sstevel@tonic-gate * No more user processes in the zone. The zone is empty. 16907c478bd9Sstevel@tonic-gate */ 16917c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_EMPTY); 16927c478bd9Sstevel@tonic-gate goto out; 16937c478bd9Sstevel@tonic-gate } 16947c478bd9Sstevel@tonic-gate 16957c478bd9Sstevel@tonic-gate ASSERT(refcnt == 0); 16967c478bd9Sstevel@tonic-gate /* 16977c478bd9Sstevel@tonic-gate * zsched has exited; the zone is dead. 16987c478bd9Sstevel@tonic-gate */ 16997c478bd9Sstevel@tonic-gate zone->zone_zsched = NULL; /* paranoia */ 17007c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 17017c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DEAD); 17027c478bd9Sstevel@tonic-gate out: 17037c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 17047c478bd9Sstevel@tonic-gate zone_rele(zone); 17057c478bd9Sstevel@tonic-gate } 17067c478bd9Sstevel@tonic-gate 17077c478bd9Sstevel@tonic-gate zoneid_t 17087c478bd9Sstevel@tonic-gate getzoneid(void) 17097c478bd9Sstevel@tonic-gate { 17107c478bd9Sstevel@tonic-gate return (curproc->p_zone->zone_id); 17117c478bd9Sstevel@tonic-gate } 17127c478bd9Sstevel@tonic-gate 17137c478bd9Sstevel@tonic-gate /* 17147c478bd9Sstevel@tonic-gate * Internal versions of zone_find_by_*(). These don't zone_hold() or 17157c478bd9Sstevel@tonic-gate * check the validity of a zone's state. 17167c478bd9Sstevel@tonic-gate */ 17177c478bd9Sstevel@tonic-gate static zone_t * 17187c478bd9Sstevel@tonic-gate zone_find_all_by_id(zoneid_t zoneid) 17197c478bd9Sstevel@tonic-gate { 17207c478bd9Sstevel@tonic-gate mod_hash_val_t hv; 17217c478bd9Sstevel@tonic-gate zone_t *zone = NULL; 17227c478bd9Sstevel@tonic-gate 17237c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 17247c478bd9Sstevel@tonic-gate 17257c478bd9Sstevel@tonic-gate if (mod_hash_find(zonehashbyid, 17267c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zoneid, &hv) == 0) 17277c478bd9Sstevel@tonic-gate zone = (zone_t *)hv; 17287c478bd9Sstevel@tonic-gate return (zone); 17297c478bd9Sstevel@tonic-gate } 17307c478bd9Sstevel@tonic-gate 173145916cd2Sjpk static zone_t * 173245916cd2Sjpk zone_find_all_by_label(const ts_label_t *label) 173345916cd2Sjpk { 173445916cd2Sjpk mod_hash_val_t hv; 173545916cd2Sjpk zone_t *zone = NULL; 173645916cd2Sjpk 173745916cd2Sjpk ASSERT(MUTEX_HELD(&zonehash_lock)); 173845916cd2Sjpk 173945916cd2Sjpk /* 174045916cd2Sjpk * zonehashbylabel is not maintained for unlabeled systems 174145916cd2Sjpk */ 174245916cd2Sjpk if (!is_system_labeled()) 174345916cd2Sjpk return (NULL); 174445916cd2Sjpk if (mod_hash_find(zonehashbylabel, (mod_hash_key_t)label, &hv) == 0) 174545916cd2Sjpk zone = (zone_t *)hv; 174645916cd2Sjpk return (zone); 174745916cd2Sjpk } 174845916cd2Sjpk 17497c478bd9Sstevel@tonic-gate static zone_t * 17507c478bd9Sstevel@tonic-gate zone_find_all_by_name(char *name) 17517c478bd9Sstevel@tonic-gate { 17527c478bd9Sstevel@tonic-gate mod_hash_val_t hv; 17537c478bd9Sstevel@tonic-gate zone_t *zone = NULL; 17547c478bd9Sstevel@tonic-gate 17557c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 17567c478bd9Sstevel@tonic-gate 17577c478bd9Sstevel@tonic-gate if (mod_hash_find(zonehashbyname, (mod_hash_key_t)name, &hv) == 0) 17587c478bd9Sstevel@tonic-gate zone = (zone_t *)hv; 17597c478bd9Sstevel@tonic-gate return (zone); 17607c478bd9Sstevel@tonic-gate } 17617c478bd9Sstevel@tonic-gate 17627c478bd9Sstevel@tonic-gate /* 17637c478bd9Sstevel@tonic-gate * Public interface for looking up a zone by zoneid. Only returns the zone if 17647c478bd9Sstevel@tonic-gate * it is fully initialized, and has not yet begun the zone_destroy() sequence. 17657c478bd9Sstevel@tonic-gate * Caller must call zone_rele() once it is done with the zone. 17667c478bd9Sstevel@tonic-gate * 17677c478bd9Sstevel@tonic-gate * The zone may begin the zone_destroy() sequence immediately after this 17687c478bd9Sstevel@tonic-gate * function returns, but may be safely used until zone_rele() is called. 17697c478bd9Sstevel@tonic-gate */ 17707c478bd9Sstevel@tonic-gate zone_t * 17717c478bd9Sstevel@tonic-gate zone_find_by_id(zoneid_t zoneid) 17727c478bd9Sstevel@tonic-gate { 17737c478bd9Sstevel@tonic-gate zone_t *zone; 17747c478bd9Sstevel@tonic-gate zone_status_t status; 17757c478bd9Sstevel@tonic-gate 17767c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 17777c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 17787c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17797c478bd9Sstevel@tonic-gate return (NULL); 17807c478bd9Sstevel@tonic-gate } 17817c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 17827c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) { 17837c478bd9Sstevel@tonic-gate /* 17847c478bd9Sstevel@tonic-gate * For all practical purposes the zone doesn't exist. 17857c478bd9Sstevel@tonic-gate */ 17867c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17877c478bd9Sstevel@tonic-gate return (NULL); 17887c478bd9Sstevel@tonic-gate } 17897c478bd9Sstevel@tonic-gate zone_hold(zone); 17907c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17917c478bd9Sstevel@tonic-gate return (zone); 17927c478bd9Sstevel@tonic-gate } 17937c478bd9Sstevel@tonic-gate 179445916cd2Sjpk /* 179545916cd2Sjpk * Similar to zone_find_by_id, but using zone label as the key. 179645916cd2Sjpk */ 179745916cd2Sjpk zone_t * 179845916cd2Sjpk zone_find_by_label(const ts_label_t *label) 179945916cd2Sjpk { 180045916cd2Sjpk zone_t *zone; 180142bc57c4Srica zone_status_t status; 180245916cd2Sjpk 180345916cd2Sjpk mutex_enter(&zonehash_lock); 180445916cd2Sjpk if ((zone = zone_find_all_by_label(label)) == NULL) { 180545916cd2Sjpk mutex_exit(&zonehash_lock); 180645916cd2Sjpk return (NULL); 180745916cd2Sjpk } 180842bc57c4Srica 180942bc57c4Srica status = zone_status_get(zone); 181042bc57c4Srica if (status > ZONE_IS_DOWN) { 181145916cd2Sjpk /* 181245916cd2Sjpk * For all practical purposes the zone doesn't exist. 181345916cd2Sjpk */ 181442bc57c4Srica mutex_exit(&zonehash_lock); 181542bc57c4Srica return (NULL); 181645916cd2Sjpk } 181742bc57c4Srica zone_hold(zone); 181845916cd2Sjpk mutex_exit(&zonehash_lock); 181945916cd2Sjpk return (zone); 182045916cd2Sjpk } 182145916cd2Sjpk 18227c478bd9Sstevel@tonic-gate /* 18237c478bd9Sstevel@tonic-gate * Similar to zone_find_by_id, but using zone name as the key. 18247c478bd9Sstevel@tonic-gate */ 18257c478bd9Sstevel@tonic-gate zone_t * 18267c478bd9Sstevel@tonic-gate zone_find_by_name(char *name) 18277c478bd9Sstevel@tonic-gate { 18287c478bd9Sstevel@tonic-gate zone_t *zone; 18297c478bd9Sstevel@tonic-gate zone_status_t status; 18307c478bd9Sstevel@tonic-gate 18317c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 18327c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_name(name)) == NULL) { 18337c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 18347c478bd9Sstevel@tonic-gate return (NULL); 18357c478bd9Sstevel@tonic-gate } 18367c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 18377c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) { 18387c478bd9Sstevel@tonic-gate /* 18397c478bd9Sstevel@tonic-gate * For all practical purposes the zone doesn't exist. 18407c478bd9Sstevel@tonic-gate */ 18417c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 18427c478bd9Sstevel@tonic-gate return (NULL); 18437c478bd9Sstevel@tonic-gate } 18447c478bd9Sstevel@tonic-gate zone_hold(zone); 18457c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 18467c478bd9Sstevel@tonic-gate return (zone); 18477c478bd9Sstevel@tonic-gate } 18487c478bd9Sstevel@tonic-gate 18497c478bd9Sstevel@tonic-gate /* 18507c478bd9Sstevel@tonic-gate * Similar to zone_find_by_id(), using the path as a key. For instance, 18517c478bd9Sstevel@tonic-gate * if there is a zone "foo" rooted at /foo/root, and the path argument 18527c478bd9Sstevel@tonic-gate * is "/foo/root/proc", it will return the held zone_t corresponding to 18537c478bd9Sstevel@tonic-gate * zone "foo". 18547c478bd9Sstevel@tonic-gate * 18557c478bd9Sstevel@tonic-gate * zone_find_by_path() always returns a non-NULL value, since at the 18567c478bd9Sstevel@tonic-gate * very least every path will be contained in the global zone. 18577c478bd9Sstevel@tonic-gate * 18587c478bd9Sstevel@tonic-gate * As with the other zone_find_by_*() functions, the caller is 18597c478bd9Sstevel@tonic-gate * responsible for zone_rele()ing the return value of this function. 18607c478bd9Sstevel@tonic-gate */ 18617c478bd9Sstevel@tonic-gate zone_t * 18627c478bd9Sstevel@tonic-gate zone_find_by_path(const char *path) 18637c478bd9Sstevel@tonic-gate { 18647c478bd9Sstevel@tonic-gate zone_t *zone; 18657c478bd9Sstevel@tonic-gate zone_t *zret = NULL; 18667c478bd9Sstevel@tonic-gate zone_status_t status; 18677c478bd9Sstevel@tonic-gate 18687c478bd9Sstevel@tonic-gate if (path == NULL) { 18697c478bd9Sstevel@tonic-gate /* 18707c478bd9Sstevel@tonic-gate * Call from rootconf(). 18717c478bd9Sstevel@tonic-gate */ 18727c478bd9Sstevel@tonic-gate zone_hold(global_zone); 18737c478bd9Sstevel@tonic-gate return (global_zone); 18747c478bd9Sstevel@tonic-gate } 18757c478bd9Sstevel@tonic-gate ASSERT(*path == '/'); 18767c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 18777c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 18787c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 18797c478bd9Sstevel@tonic-gate if (ZONE_PATH_VISIBLE(path, zone)) 18807c478bd9Sstevel@tonic-gate zret = zone; 18817c478bd9Sstevel@tonic-gate } 18827c478bd9Sstevel@tonic-gate ASSERT(zret != NULL); 18837c478bd9Sstevel@tonic-gate status = zone_status_get(zret); 18847c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) { 18857c478bd9Sstevel@tonic-gate /* 18867c478bd9Sstevel@tonic-gate * Zone practically doesn't exist. 18877c478bd9Sstevel@tonic-gate */ 18887c478bd9Sstevel@tonic-gate zret = global_zone; 18897c478bd9Sstevel@tonic-gate } 18907c478bd9Sstevel@tonic-gate zone_hold(zret); 18917c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 18927c478bd9Sstevel@tonic-gate return (zret); 18937c478bd9Sstevel@tonic-gate } 18947c478bd9Sstevel@tonic-gate 18957c478bd9Sstevel@tonic-gate /* 18967c478bd9Sstevel@tonic-gate * Get the number of cpus visible to this zone. The system-wide global 18977c478bd9Sstevel@tonic-gate * 'ncpus' is returned if pools are disabled, the caller is in the 18987c478bd9Sstevel@tonic-gate * global zone, or a NULL zone argument is passed in. 18997c478bd9Sstevel@tonic-gate */ 19007c478bd9Sstevel@tonic-gate int 19017c478bd9Sstevel@tonic-gate zone_ncpus_get(zone_t *zone) 19027c478bd9Sstevel@tonic-gate { 19037c478bd9Sstevel@tonic-gate int myncpus = zone == NULL ? 0 : zone->zone_ncpus; 19047c478bd9Sstevel@tonic-gate 19057c478bd9Sstevel@tonic-gate return (myncpus != 0 ? myncpus : ncpus); 19067c478bd9Sstevel@tonic-gate } 19077c478bd9Sstevel@tonic-gate 19087c478bd9Sstevel@tonic-gate /* 19097c478bd9Sstevel@tonic-gate * Get the number of online cpus visible to this zone. The system-wide 19107c478bd9Sstevel@tonic-gate * global 'ncpus_online' is returned if pools are disabled, the caller 19117c478bd9Sstevel@tonic-gate * is in the global zone, or a NULL zone argument is passed in. 19127c478bd9Sstevel@tonic-gate */ 19137c478bd9Sstevel@tonic-gate int 19147c478bd9Sstevel@tonic-gate zone_ncpus_online_get(zone_t *zone) 19157c478bd9Sstevel@tonic-gate { 19167c478bd9Sstevel@tonic-gate int myncpus_online = zone == NULL ? 0 : zone->zone_ncpus_online; 19177c478bd9Sstevel@tonic-gate 19187c478bd9Sstevel@tonic-gate return (myncpus_online != 0 ? myncpus_online : ncpus_online); 19197c478bd9Sstevel@tonic-gate } 19207c478bd9Sstevel@tonic-gate 19217c478bd9Sstevel@tonic-gate /* 19227c478bd9Sstevel@tonic-gate * Return the pool to which the zone is currently bound. 19237c478bd9Sstevel@tonic-gate */ 19247c478bd9Sstevel@tonic-gate pool_t * 19257c478bd9Sstevel@tonic-gate zone_pool_get(zone_t *zone) 19267c478bd9Sstevel@tonic-gate { 19277c478bd9Sstevel@tonic-gate ASSERT(pool_lock_held()); 19287c478bd9Sstevel@tonic-gate 19297c478bd9Sstevel@tonic-gate return (zone->zone_pool); 19307c478bd9Sstevel@tonic-gate } 19317c478bd9Sstevel@tonic-gate 19327c478bd9Sstevel@tonic-gate /* 19337c478bd9Sstevel@tonic-gate * Set the zone's pool pointer and update the zone's visibility to match 19347c478bd9Sstevel@tonic-gate * the resources in the new pool. 19357c478bd9Sstevel@tonic-gate */ 19367c478bd9Sstevel@tonic-gate void 19377c478bd9Sstevel@tonic-gate zone_pool_set(zone_t *zone, pool_t *pool) 19387c478bd9Sstevel@tonic-gate { 19397c478bd9Sstevel@tonic-gate ASSERT(pool_lock_held()); 19407c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 19417c478bd9Sstevel@tonic-gate 19427c478bd9Sstevel@tonic-gate zone->zone_pool = pool; 19437c478bd9Sstevel@tonic-gate zone_pset_set(zone, pool->pool_pset->pset_id); 19447c478bd9Sstevel@tonic-gate } 19457c478bd9Sstevel@tonic-gate 19467c478bd9Sstevel@tonic-gate /* 19477c478bd9Sstevel@tonic-gate * Return the cached value of the id of the processor set to which the 19487c478bd9Sstevel@tonic-gate * zone is currently bound. The value will be ZONE_PS_INVAL if the pools 19497c478bd9Sstevel@tonic-gate * facility is disabled. 19507c478bd9Sstevel@tonic-gate */ 19517c478bd9Sstevel@tonic-gate psetid_t 19527c478bd9Sstevel@tonic-gate zone_pset_get(zone_t *zone) 19537c478bd9Sstevel@tonic-gate { 19547c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 19557c478bd9Sstevel@tonic-gate 19567c478bd9Sstevel@tonic-gate return (zone->zone_psetid); 19577c478bd9Sstevel@tonic-gate } 19587c478bd9Sstevel@tonic-gate 19597c478bd9Sstevel@tonic-gate /* 19607c478bd9Sstevel@tonic-gate * Set the cached value of the id of the processor set to which the zone 19617c478bd9Sstevel@tonic-gate * is currently bound. Also update the zone's visibility to match the 19627c478bd9Sstevel@tonic-gate * resources in the new processor set. 19637c478bd9Sstevel@tonic-gate */ 19647c478bd9Sstevel@tonic-gate void 19657c478bd9Sstevel@tonic-gate zone_pset_set(zone_t *zone, psetid_t newpsetid) 19667c478bd9Sstevel@tonic-gate { 19677c478bd9Sstevel@tonic-gate psetid_t oldpsetid; 19687c478bd9Sstevel@tonic-gate 19697c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 19707c478bd9Sstevel@tonic-gate oldpsetid = zone_pset_get(zone); 19717c478bd9Sstevel@tonic-gate 19727c478bd9Sstevel@tonic-gate if (oldpsetid == newpsetid) 19737c478bd9Sstevel@tonic-gate return; 19747c478bd9Sstevel@tonic-gate /* 19757c478bd9Sstevel@tonic-gate * Global zone sees all. 19767c478bd9Sstevel@tonic-gate */ 19777c478bd9Sstevel@tonic-gate if (zone != global_zone) { 19787c478bd9Sstevel@tonic-gate zone->zone_psetid = newpsetid; 19797c478bd9Sstevel@tonic-gate if (newpsetid != ZONE_PS_INVAL) 19807c478bd9Sstevel@tonic-gate pool_pset_visibility_add(newpsetid, zone); 19817c478bd9Sstevel@tonic-gate if (oldpsetid != ZONE_PS_INVAL) 19827c478bd9Sstevel@tonic-gate pool_pset_visibility_remove(oldpsetid, zone); 19837c478bd9Sstevel@tonic-gate } 19847c478bd9Sstevel@tonic-gate /* 19857c478bd9Sstevel@tonic-gate * Disabling pools, so we should start using the global values 19867c478bd9Sstevel@tonic-gate * for ncpus and ncpus_online. 19877c478bd9Sstevel@tonic-gate */ 19887c478bd9Sstevel@tonic-gate if (newpsetid == ZONE_PS_INVAL) { 19897c478bd9Sstevel@tonic-gate zone->zone_ncpus = 0; 19907c478bd9Sstevel@tonic-gate zone->zone_ncpus_online = 0; 19917c478bd9Sstevel@tonic-gate } 19927c478bd9Sstevel@tonic-gate } 19937c478bd9Sstevel@tonic-gate 19947c478bd9Sstevel@tonic-gate /* 19957c478bd9Sstevel@tonic-gate * Walk the list of active zones and issue the provided callback for 19967c478bd9Sstevel@tonic-gate * each of them. 19977c478bd9Sstevel@tonic-gate * 19987c478bd9Sstevel@tonic-gate * Caller must not be holding any locks that may be acquired under 19997c478bd9Sstevel@tonic-gate * zonehash_lock. See comment at the beginning of the file for a list of 20007c478bd9Sstevel@tonic-gate * common locks and their interactions with zones. 20017c478bd9Sstevel@tonic-gate */ 20027c478bd9Sstevel@tonic-gate int 20037c478bd9Sstevel@tonic-gate zone_walk(int (*cb)(zone_t *, void *), void *data) 20047c478bd9Sstevel@tonic-gate { 20057c478bd9Sstevel@tonic-gate zone_t *zone; 20067c478bd9Sstevel@tonic-gate int ret = 0; 20077c478bd9Sstevel@tonic-gate zone_status_t status; 20087c478bd9Sstevel@tonic-gate 20097c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 20107c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 20117c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 20127c478bd9Sstevel@tonic-gate /* 20137c478bd9Sstevel@tonic-gate * Skip zones that shouldn't be externally visible. 20147c478bd9Sstevel@tonic-gate */ 20157c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 20167c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) 20177c478bd9Sstevel@tonic-gate continue; 20187c478bd9Sstevel@tonic-gate /* 20197c478bd9Sstevel@tonic-gate * Bail immediately if any callback invocation returns a 20207c478bd9Sstevel@tonic-gate * non-zero value. 20217c478bd9Sstevel@tonic-gate */ 20227c478bd9Sstevel@tonic-gate ret = (*cb)(zone, data); 20237c478bd9Sstevel@tonic-gate if (ret != 0) 20247c478bd9Sstevel@tonic-gate break; 20257c478bd9Sstevel@tonic-gate } 20267c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 20277c478bd9Sstevel@tonic-gate return (ret); 20287c478bd9Sstevel@tonic-gate } 20297c478bd9Sstevel@tonic-gate 20307c478bd9Sstevel@tonic-gate static int 20317c478bd9Sstevel@tonic-gate zone_set_root(zone_t *zone, const char *upath) 20327c478bd9Sstevel@tonic-gate { 20337c478bd9Sstevel@tonic-gate vnode_t *vp; 20347c478bd9Sstevel@tonic-gate int trycount; 20357c478bd9Sstevel@tonic-gate int error = 0; 20367c478bd9Sstevel@tonic-gate char *path; 20377c478bd9Sstevel@tonic-gate struct pathname upn, pn; 20387c478bd9Sstevel@tonic-gate size_t pathlen; 20397c478bd9Sstevel@tonic-gate 20407c478bd9Sstevel@tonic-gate if ((error = pn_get((char *)upath, UIO_USERSPACE, &upn)) != 0) 20417c478bd9Sstevel@tonic-gate return (error); 20427c478bd9Sstevel@tonic-gate 20437c478bd9Sstevel@tonic-gate pn_alloc(&pn); 20447c478bd9Sstevel@tonic-gate 20457c478bd9Sstevel@tonic-gate /* prevent infinite loop */ 20467c478bd9Sstevel@tonic-gate trycount = 10; 20477c478bd9Sstevel@tonic-gate for (;;) { 20487c478bd9Sstevel@tonic-gate if (--trycount <= 0) { 20497c478bd9Sstevel@tonic-gate error = ESTALE; 20507c478bd9Sstevel@tonic-gate goto out; 20517c478bd9Sstevel@tonic-gate } 20527c478bd9Sstevel@tonic-gate 20537c478bd9Sstevel@tonic-gate if ((error = lookuppn(&upn, &pn, FOLLOW, NULLVPP, &vp)) == 0) { 20547c478bd9Sstevel@tonic-gate /* 20557c478bd9Sstevel@tonic-gate * VOP_ACCESS() may cover 'vp' with a new 20567c478bd9Sstevel@tonic-gate * filesystem, if 'vp' is an autoFS vnode. 20577c478bd9Sstevel@tonic-gate * Get the new 'vp' if so. 20587c478bd9Sstevel@tonic-gate */ 20597c478bd9Sstevel@tonic-gate if ((error = VOP_ACCESS(vp, VEXEC, 0, CRED())) == 0 && 20607c478bd9Sstevel@tonic-gate (vp->v_vfsmountedhere == NULL || 20617c478bd9Sstevel@tonic-gate (error = traverse(&vp)) == 0)) { 20627c478bd9Sstevel@tonic-gate pathlen = pn.pn_pathlen + 2; 20637c478bd9Sstevel@tonic-gate path = kmem_alloc(pathlen, KM_SLEEP); 20647c478bd9Sstevel@tonic-gate (void) strncpy(path, pn.pn_path, 20657c478bd9Sstevel@tonic-gate pn.pn_pathlen + 1); 20667c478bd9Sstevel@tonic-gate path[pathlen - 2] = '/'; 20677c478bd9Sstevel@tonic-gate path[pathlen - 1] = '\0'; 20687c478bd9Sstevel@tonic-gate pn_free(&pn); 20697c478bd9Sstevel@tonic-gate pn_free(&upn); 20707c478bd9Sstevel@tonic-gate 20717c478bd9Sstevel@tonic-gate /* Success! */ 20727c478bd9Sstevel@tonic-gate break; 20737c478bd9Sstevel@tonic-gate } 20747c478bd9Sstevel@tonic-gate VN_RELE(vp); 20757c478bd9Sstevel@tonic-gate } 20767c478bd9Sstevel@tonic-gate if (error != ESTALE) 20777c478bd9Sstevel@tonic-gate goto out; 20787c478bd9Sstevel@tonic-gate } 20797c478bd9Sstevel@tonic-gate 20807c478bd9Sstevel@tonic-gate ASSERT(error == 0); 20817c478bd9Sstevel@tonic-gate zone->zone_rootvp = vp; /* we hold a reference to vp */ 20827c478bd9Sstevel@tonic-gate zone->zone_rootpath = path; 20837c478bd9Sstevel@tonic-gate zone->zone_rootpathlen = pathlen; 208448451833Scarlsonj if (pathlen > 5 && strcmp(path + pathlen - 5, "/lu/") == 0) 208548451833Scarlsonj zone->zone_flags |= ZF_IS_SCRATCH; 20867c478bd9Sstevel@tonic-gate return (0); 20877c478bd9Sstevel@tonic-gate 20887c478bd9Sstevel@tonic-gate out: 20897c478bd9Sstevel@tonic-gate pn_free(&pn); 20907c478bd9Sstevel@tonic-gate pn_free(&upn); 20917c478bd9Sstevel@tonic-gate return (error); 20927c478bd9Sstevel@tonic-gate } 20937c478bd9Sstevel@tonic-gate 20947c478bd9Sstevel@tonic-gate #define isalnum(c) (((c) >= '0' && (c) <= '9') || \ 20957c478bd9Sstevel@tonic-gate ((c) >= 'a' && (c) <= 'z') || \ 20967c478bd9Sstevel@tonic-gate ((c) >= 'A' && (c) <= 'Z')) 20977c478bd9Sstevel@tonic-gate 20987c478bd9Sstevel@tonic-gate static int 20997c478bd9Sstevel@tonic-gate zone_set_name(zone_t *zone, const char *uname) 21007c478bd9Sstevel@tonic-gate { 21017c478bd9Sstevel@tonic-gate char *kname = kmem_zalloc(ZONENAME_MAX, KM_SLEEP); 21027c478bd9Sstevel@tonic-gate size_t len; 21037c478bd9Sstevel@tonic-gate int i, err; 21047c478bd9Sstevel@tonic-gate 21057c478bd9Sstevel@tonic-gate if ((err = copyinstr(uname, kname, ZONENAME_MAX, &len)) != 0) { 21067c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 21077c478bd9Sstevel@tonic-gate return (err); /* EFAULT or ENAMETOOLONG */ 21087c478bd9Sstevel@tonic-gate } 21097c478bd9Sstevel@tonic-gate 21107c478bd9Sstevel@tonic-gate /* must be less than ZONENAME_MAX */ 21117c478bd9Sstevel@tonic-gate if (len == ZONENAME_MAX && kname[ZONENAME_MAX - 1] != '\0') { 21127c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 21137c478bd9Sstevel@tonic-gate return (EINVAL); 21147c478bd9Sstevel@tonic-gate } 21157c478bd9Sstevel@tonic-gate 21167c478bd9Sstevel@tonic-gate /* 21177c478bd9Sstevel@tonic-gate * Name must start with an alphanumeric and must contain only 21187c478bd9Sstevel@tonic-gate * alphanumerics, '-', '_' and '.'. 21197c478bd9Sstevel@tonic-gate */ 21207c478bd9Sstevel@tonic-gate if (!isalnum(kname[0])) { 21217c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 21227c478bd9Sstevel@tonic-gate return (EINVAL); 21237c478bd9Sstevel@tonic-gate } 21247c478bd9Sstevel@tonic-gate for (i = 1; i < len - 1; i++) { 21257c478bd9Sstevel@tonic-gate if (!isalnum(kname[i]) && kname[i] != '-' && kname[i] != '_' && 21267c478bd9Sstevel@tonic-gate kname[i] != '.') { 21277c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 21287c478bd9Sstevel@tonic-gate return (EINVAL); 21297c478bd9Sstevel@tonic-gate } 21307c478bd9Sstevel@tonic-gate } 21317c478bd9Sstevel@tonic-gate 21327c478bd9Sstevel@tonic-gate zone->zone_name = kname; 21337c478bd9Sstevel@tonic-gate return (0); 21347c478bd9Sstevel@tonic-gate } 21357c478bd9Sstevel@tonic-gate 21367c478bd9Sstevel@tonic-gate /* 21377c478bd9Sstevel@tonic-gate * Similar to thread_create(), but makes sure the thread is in the appropriate 21387c478bd9Sstevel@tonic-gate * zone's zsched process (curproc->p_zone->zone_zsched) before returning. 21397c478bd9Sstevel@tonic-gate */ 21407c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 21417c478bd9Sstevel@tonic-gate kthread_t * 21427c478bd9Sstevel@tonic-gate zthread_create( 21437c478bd9Sstevel@tonic-gate caddr_t stk, 21447c478bd9Sstevel@tonic-gate size_t stksize, 21457c478bd9Sstevel@tonic-gate void (*proc)(), 21467c478bd9Sstevel@tonic-gate void *arg, 21477c478bd9Sstevel@tonic-gate size_t len, 21487c478bd9Sstevel@tonic-gate pri_t pri) 21497c478bd9Sstevel@tonic-gate { 21507c478bd9Sstevel@tonic-gate kthread_t *t; 21517c478bd9Sstevel@tonic-gate zone_t *zone = curproc->p_zone; 21527c478bd9Sstevel@tonic-gate proc_t *pp = zone->zone_zsched; 21537c478bd9Sstevel@tonic-gate 21547c478bd9Sstevel@tonic-gate zone_hold(zone); /* Reference to be dropped when thread exits */ 21557c478bd9Sstevel@tonic-gate 21567c478bd9Sstevel@tonic-gate /* 21577c478bd9Sstevel@tonic-gate * No-one should be trying to create threads if the zone is shutting 21587c478bd9Sstevel@tonic-gate * down and there aren't any kernel threads around. See comment 21597c478bd9Sstevel@tonic-gate * in zthread_exit(). 21607c478bd9Sstevel@tonic-gate */ 21617c478bd9Sstevel@tonic-gate ASSERT(!(zone->zone_kthreads == NULL && 21627c478bd9Sstevel@tonic-gate zone_status_get(zone) >= ZONE_IS_EMPTY)); 21637c478bd9Sstevel@tonic-gate /* 21647c478bd9Sstevel@tonic-gate * Create a thread, but don't let it run until we've finished setting 21657c478bd9Sstevel@tonic-gate * things up. 21667c478bd9Sstevel@tonic-gate */ 21677c478bd9Sstevel@tonic-gate t = thread_create(stk, stksize, proc, arg, len, pp, TS_STOPPED, pri); 21687c478bd9Sstevel@tonic-gate ASSERT(t->t_forw == NULL); 21697c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 21707c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == NULL) { 21717c478bd9Sstevel@tonic-gate t->t_forw = t->t_back = t; 21727c478bd9Sstevel@tonic-gate } else { 21737c478bd9Sstevel@tonic-gate kthread_t *tx = zone->zone_kthreads; 21747c478bd9Sstevel@tonic-gate 21757c478bd9Sstevel@tonic-gate t->t_forw = tx; 21767c478bd9Sstevel@tonic-gate t->t_back = tx->t_back; 21777c478bd9Sstevel@tonic-gate tx->t_back->t_forw = t; 21787c478bd9Sstevel@tonic-gate tx->t_back = t; 21797c478bd9Sstevel@tonic-gate } 21807c478bd9Sstevel@tonic-gate zone->zone_kthreads = t; 21817c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 21827c478bd9Sstevel@tonic-gate 21837c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 21847c478bd9Sstevel@tonic-gate t->t_proc_flag |= TP_ZTHREAD; 21857c478bd9Sstevel@tonic-gate project_rele(t->t_proj); 21867c478bd9Sstevel@tonic-gate t->t_proj = project_hold(pp->p_task->tk_proj); 21877c478bd9Sstevel@tonic-gate 21887c478bd9Sstevel@tonic-gate /* 21897c478bd9Sstevel@tonic-gate * Setup complete, let it run. 21907c478bd9Sstevel@tonic-gate */ 21917c478bd9Sstevel@tonic-gate thread_lock(t); 21927c478bd9Sstevel@tonic-gate t->t_schedflag |= TS_ALLSTART; 21937c478bd9Sstevel@tonic-gate setrun_locked(t); 21947c478bd9Sstevel@tonic-gate thread_unlock(t); 21957c478bd9Sstevel@tonic-gate 21967c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 21977c478bd9Sstevel@tonic-gate 21987c478bd9Sstevel@tonic-gate return (t); 21997c478bd9Sstevel@tonic-gate } 22007c478bd9Sstevel@tonic-gate 22017c478bd9Sstevel@tonic-gate /* 22027c478bd9Sstevel@tonic-gate * Similar to thread_exit(). Must be called by threads created via 22037c478bd9Sstevel@tonic-gate * zthread_exit(). 22047c478bd9Sstevel@tonic-gate */ 22057c478bd9Sstevel@tonic-gate void 22067c478bd9Sstevel@tonic-gate zthread_exit(void) 22077c478bd9Sstevel@tonic-gate { 22087c478bd9Sstevel@tonic-gate kthread_t *t = curthread; 22097c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 22107c478bd9Sstevel@tonic-gate zone_t *zone = pp->p_zone; 22117c478bd9Sstevel@tonic-gate 22127c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 22137c478bd9Sstevel@tonic-gate 22147c478bd9Sstevel@tonic-gate /* 22157c478bd9Sstevel@tonic-gate * Reparent to p0 22167c478bd9Sstevel@tonic-gate */ 2217b4b07f87Sjosephb kpreempt_disable(); 22187c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 22197c478bd9Sstevel@tonic-gate t->t_proc_flag &= ~TP_ZTHREAD; 22207c478bd9Sstevel@tonic-gate t->t_procp = &p0; 22217c478bd9Sstevel@tonic-gate hat_thread_exit(t); 22227c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 2223b4b07f87Sjosephb kpreempt_enable(); 22247c478bd9Sstevel@tonic-gate 22257c478bd9Sstevel@tonic-gate if (t->t_back == t) { 22267c478bd9Sstevel@tonic-gate ASSERT(t->t_forw == t); 22277c478bd9Sstevel@tonic-gate /* 22287c478bd9Sstevel@tonic-gate * If the zone is empty, once the thread count 22297c478bd9Sstevel@tonic-gate * goes to zero no further kernel threads can be 22307c478bd9Sstevel@tonic-gate * created. This is because if the creator is a process 22317c478bd9Sstevel@tonic-gate * in the zone, then it must have exited before the zone 22327c478bd9Sstevel@tonic-gate * state could be set to ZONE_IS_EMPTY. 22337c478bd9Sstevel@tonic-gate * Otherwise, if the creator is a kernel thread in the 22347c478bd9Sstevel@tonic-gate * zone, the thread count is non-zero. 22357c478bd9Sstevel@tonic-gate * 22367c478bd9Sstevel@tonic-gate * This really means that non-zone kernel threads should 22377c478bd9Sstevel@tonic-gate * not create zone kernel threads. 22387c478bd9Sstevel@tonic-gate */ 22397c478bd9Sstevel@tonic-gate zone->zone_kthreads = NULL; 22407c478bd9Sstevel@tonic-gate if (zone_status_get(zone) == ZONE_IS_EMPTY) { 22417c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DOWN); 22427c478bd9Sstevel@tonic-gate } 22437c478bd9Sstevel@tonic-gate } else { 22447c478bd9Sstevel@tonic-gate t->t_forw->t_back = t->t_back; 22457c478bd9Sstevel@tonic-gate t->t_back->t_forw = t->t_forw; 22467c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == t) 22477c478bd9Sstevel@tonic-gate zone->zone_kthreads = t->t_forw; 22487c478bd9Sstevel@tonic-gate } 22497c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 22507c478bd9Sstevel@tonic-gate zone_rele(zone); 22517c478bd9Sstevel@tonic-gate thread_exit(); 22527c478bd9Sstevel@tonic-gate /* NOTREACHED */ 22537c478bd9Sstevel@tonic-gate } 22547c478bd9Sstevel@tonic-gate 22557c478bd9Sstevel@tonic-gate static void 22567c478bd9Sstevel@tonic-gate zone_chdir(vnode_t *vp, vnode_t **vpp, proc_t *pp) 22577c478bd9Sstevel@tonic-gate { 22587c478bd9Sstevel@tonic-gate vnode_t *oldvp; 22597c478bd9Sstevel@tonic-gate 22607c478bd9Sstevel@tonic-gate /* we're going to hold a reference here to the directory */ 22617c478bd9Sstevel@tonic-gate VN_HOLD(vp); 22627c478bd9Sstevel@tonic-gate 22637c478bd9Sstevel@tonic-gate #ifdef C2_AUDIT 22647c478bd9Sstevel@tonic-gate if (audit_active) /* update abs cwd/root path see c2audit.c */ 22657c478bd9Sstevel@tonic-gate audit_chdirec(vp, vpp); 22667c478bd9Sstevel@tonic-gate #endif 22677c478bd9Sstevel@tonic-gate 22687c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 22697c478bd9Sstevel@tonic-gate oldvp = *vpp; 22707c478bd9Sstevel@tonic-gate *vpp = vp; 22717c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 22727c478bd9Sstevel@tonic-gate if (oldvp != NULL) 22737c478bd9Sstevel@tonic-gate VN_RELE(oldvp); 22747c478bd9Sstevel@tonic-gate } 22757c478bd9Sstevel@tonic-gate 22767c478bd9Sstevel@tonic-gate /* 22777c478bd9Sstevel@tonic-gate * Convert an rctl value represented by an nvlist_t into an rctl_val_t. 22787c478bd9Sstevel@tonic-gate */ 22797c478bd9Sstevel@tonic-gate static int 22807c478bd9Sstevel@tonic-gate nvlist2rctlval(nvlist_t *nvl, rctl_val_t *rv) 22817c478bd9Sstevel@tonic-gate { 22827c478bd9Sstevel@tonic-gate nvpair_t *nvp = NULL; 22837c478bd9Sstevel@tonic-gate boolean_t priv_set = B_FALSE; 22847c478bd9Sstevel@tonic-gate boolean_t limit_set = B_FALSE; 22857c478bd9Sstevel@tonic-gate boolean_t action_set = B_FALSE; 22867c478bd9Sstevel@tonic-gate 22877c478bd9Sstevel@tonic-gate while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) { 22887c478bd9Sstevel@tonic-gate const char *name; 22897c478bd9Sstevel@tonic-gate uint64_t ui64; 22907c478bd9Sstevel@tonic-gate 22917c478bd9Sstevel@tonic-gate name = nvpair_name(nvp); 22927c478bd9Sstevel@tonic-gate if (nvpair_type(nvp) != DATA_TYPE_UINT64) 22937c478bd9Sstevel@tonic-gate return (EINVAL); 22947c478bd9Sstevel@tonic-gate (void) nvpair_value_uint64(nvp, &ui64); 22957c478bd9Sstevel@tonic-gate if (strcmp(name, "privilege") == 0) { 22967c478bd9Sstevel@tonic-gate /* 22977c478bd9Sstevel@tonic-gate * Currently only privileged values are allowed, but 22987c478bd9Sstevel@tonic-gate * this may change in the future. 22997c478bd9Sstevel@tonic-gate */ 23007c478bd9Sstevel@tonic-gate if (ui64 != RCPRIV_PRIVILEGED) 23017c478bd9Sstevel@tonic-gate return (EINVAL); 23027c478bd9Sstevel@tonic-gate rv->rcv_privilege = ui64; 23037c478bd9Sstevel@tonic-gate priv_set = B_TRUE; 23047c478bd9Sstevel@tonic-gate } else if (strcmp(name, "limit") == 0) { 23057c478bd9Sstevel@tonic-gate rv->rcv_value = ui64; 23067c478bd9Sstevel@tonic-gate limit_set = B_TRUE; 23077c478bd9Sstevel@tonic-gate } else if (strcmp(name, "action") == 0) { 23087c478bd9Sstevel@tonic-gate if (ui64 != RCTL_LOCAL_NOACTION && 23097c478bd9Sstevel@tonic-gate ui64 != RCTL_LOCAL_DENY) 23107c478bd9Sstevel@tonic-gate return (EINVAL); 23117c478bd9Sstevel@tonic-gate rv->rcv_flagaction = ui64; 23127c478bd9Sstevel@tonic-gate action_set = B_TRUE; 23137c478bd9Sstevel@tonic-gate } else { 23147c478bd9Sstevel@tonic-gate return (EINVAL); 23157c478bd9Sstevel@tonic-gate } 23167c478bd9Sstevel@tonic-gate } 23177c478bd9Sstevel@tonic-gate 23187c478bd9Sstevel@tonic-gate if (!(priv_set && limit_set && action_set)) 23197c478bd9Sstevel@tonic-gate return (EINVAL); 23207c478bd9Sstevel@tonic-gate rv->rcv_action_signal = 0; 23217c478bd9Sstevel@tonic-gate rv->rcv_action_recipient = NULL; 23227c478bd9Sstevel@tonic-gate rv->rcv_action_recip_pid = -1; 23237c478bd9Sstevel@tonic-gate rv->rcv_firing_time = 0; 23247c478bd9Sstevel@tonic-gate 23257c478bd9Sstevel@tonic-gate return (0); 23267c478bd9Sstevel@tonic-gate } 23277c478bd9Sstevel@tonic-gate 23283f2f09c1Sdp /* 23293f2f09c1Sdp * Non-global zone version of start_init. 23303f2f09c1Sdp */ 23317c478bd9Sstevel@tonic-gate void 23323f2f09c1Sdp zone_start_init(void) 23337c478bd9Sstevel@tonic-gate { 23347c478bd9Sstevel@tonic-gate proc_t *p = ttoproc(curthread); 2335*9acbbeafSnn zone_t *z = p->p_zone; 23367c478bd9Sstevel@tonic-gate 23373f2f09c1Sdp ASSERT(!INGLOBALZONE(curproc)); 23387c478bd9Sstevel@tonic-gate 2339*9acbbeafSnn /* 2340*9acbbeafSnn * For all purposes (ZONE_ATTR_INITPID and restart_init), 2341*9acbbeafSnn * storing just the pid of init is sufficient. 2342*9acbbeafSnn */ 2343*9acbbeafSnn z->zone_proc_initpid = p->p_pid; 2344*9acbbeafSnn 23457c478bd9Sstevel@tonic-gate /* 23463f2f09c1Sdp * We maintain zone_boot_err so that we can return the cause of the 23473f2f09c1Sdp * failure back to the caller of the zone_boot syscall. 23487c478bd9Sstevel@tonic-gate */ 23493f2f09c1Sdp p->p_zone->zone_boot_err = start_init_common(); 23507c478bd9Sstevel@tonic-gate 23517c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 2352*9acbbeafSnn if (z->zone_boot_err != 0) { 23537c478bd9Sstevel@tonic-gate /* 23547c478bd9Sstevel@tonic-gate * Make sure we are still in the booting state-- we could have 23557c478bd9Sstevel@tonic-gate * raced and already be shutting down, or even further along. 23567c478bd9Sstevel@tonic-gate */ 2357*9acbbeafSnn if (zone_status_get(z) == ZONE_IS_BOOTING) 2358*9acbbeafSnn zone_status_set(z, ZONE_IS_SHUTTING_DOWN); 23597c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 23607c478bd9Sstevel@tonic-gate /* It's gone bad, dispose of the process */ 2361*9acbbeafSnn if (proc_exit(CLD_EXITED, z->zone_boot_err) != 0) { 236297eda132Sraf mutex_enter(&p->p_lock); 236397eda132Sraf ASSERT(p->p_flag & SEXITLWPS); 23647c478bd9Sstevel@tonic-gate lwp_exit(); 23657c478bd9Sstevel@tonic-gate } 23667c478bd9Sstevel@tonic-gate } else { 2367*9acbbeafSnn if (zone_status_get(z) == ZONE_IS_BOOTING) 2368*9acbbeafSnn zone_status_set(z, ZONE_IS_RUNNING); 23697c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 23707c478bd9Sstevel@tonic-gate /* cause the process to return to userland. */ 23717c478bd9Sstevel@tonic-gate lwp_rtt(); 23727c478bd9Sstevel@tonic-gate } 23737c478bd9Sstevel@tonic-gate } 23747c478bd9Sstevel@tonic-gate 23757c478bd9Sstevel@tonic-gate struct zsched_arg { 23767c478bd9Sstevel@tonic-gate zone_t *zone; 23777c478bd9Sstevel@tonic-gate nvlist_t *nvlist; 23787c478bd9Sstevel@tonic-gate }; 23797c478bd9Sstevel@tonic-gate 23807c478bd9Sstevel@tonic-gate /* 23817c478bd9Sstevel@tonic-gate * Per-zone "sched" workalike. The similarity to "sched" doesn't have 23827c478bd9Sstevel@tonic-gate * anything to do with scheduling, but rather with the fact that 23837c478bd9Sstevel@tonic-gate * per-zone kernel threads are parented to zsched, just like regular 23847c478bd9Sstevel@tonic-gate * kernel threads are parented to sched (p0). 23857c478bd9Sstevel@tonic-gate * 23867c478bd9Sstevel@tonic-gate * zsched is also responsible for launching init for the zone. 23877c478bd9Sstevel@tonic-gate */ 23887c478bd9Sstevel@tonic-gate static void 23897c478bd9Sstevel@tonic-gate zsched(void *arg) 23907c478bd9Sstevel@tonic-gate { 23917c478bd9Sstevel@tonic-gate struct zsched_arg *za = arg; 23927c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 23937c478bd9Sstevel@tonic-gate proc_t *initp = proc_init; 23947c478bd9Sstevel@tonic-gate zone_t *zone = za->zone; 23957c478bd9Sstevel@tonic-gate cred_t *cr, *oldcred; 23967c478bd9Sstevel@tonic-gate rctl_set_t *set; 23977c478bd9Sstevel@tonic-gate rctl_alloc_gp_t *gp; 23987c478bd9Sstevel@tonic-gate contract_t *ct = NULL; 23997c478bd9Sstevel@tonic-gate task_t *tk, *oldtk; 24007c478bd9Sstevel@tonic-gate rctl_entity_p_t e; 24017c478bd9Sstevel@tonic-gate kproject_t *pj; 24027c478bd9Sstevel@tonic-gate 24037c478bd9Sstevel@tonic-gate nvlist_t *nvl = za->nvlist; 24047c478bd9Sstevel@tonic-gate nvpair_t *nvp = NULL; 24057c478bd9Sstevel@tonic-gate 24067c478bd9Sstevel@tonic-gate bcopy("zsched", u.u_psargs, sizeof ("zsched")); 24077c478bd9Sstevel@tonic-gate bcopy("zsched", u.u_comm, sizeof ("zsched")); 24087c478bd9Sstevel@tonic-gate u.u_argc = 0; 24097c478bd9Sstevel@tonic-gate u.u_argv = NULL; 24107c478bd9Sstevel@tonic-gate u.u_envp = NULL; 24117c478bd9Sstevel@tonic-gate closeall(P_FINFO(pp)); 24127c478bd9Sstevel@tonic-gate 24137c478bd9Sstevel@tonic-gate /* 24147c478bd9Sstevel@tonic-gate * We are this zone's "zsched" process. As the zone isn't generally 24157c478bd9Sstevel@tonic-gate * visible yet we don't need to grab any locks before initializing its 24167c478bd9Sstevel@tonic-gate * zone_proc pointer. 24177c478bd9Sstevel@tonic-gate */ 24187c478bd9Sstevel@tonic-gate zone_hold(zone); /* this hold is released by zone_destroy() */ 24197c478bd9Sstevel@tonic-gate zone->zone_zsched = pp; 24207c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 24217c478bd9Sstevel@tonic-gate pp->p_zone = zone; 24227c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 24237c478bd9Sstevel@tonic-gate 24247c478bd9Sstevel@tonic-gate /* 24257c478bd9Sstevel@tonic-gate * Disassociate process from its 'parent'; parent ourselves to init 24267c478bd9Sstevel@tonic-gate * (pid 1) and change other values as needed. 24277c478bd9Sstevel@tonic-gate */ 24287c478bd9Sstevel@tonic-gate sess_create(); 24297c478bd9Sstevel@tonic-gate 24307c478bd9Sstevel@tonic-gate mutex_enter(&pidlock); 24317c478bd9Sstevel@tonic-gate proc_detach(pp); 24327c478bd9Sstevel@tonic-gate pp->p_ppid = 1; 24337c478bd9Sstevel@tonic-gate pp->p_flag |= SZONETOP; 24347c478bd9Sstevel@tonic-gate pp->p_ancpid = 1; 24357c478bd9Sstevel@tonic-gate pp->p_parent = initp; 24367c478bd9Sstevel@tonic-gate pp->p_psibling = NULL; 24377c478bd9Sstevel@tonic-gate if (initp->p_child) 24387c478bd9Sstevel@tonic-gate initp->p_child->p_psibling = pp; 24397c478bd9Sstevel@tonic-gate pp->p_sibling = initp->p_child; 24407c478bd9Sstevel@tonic-gate initp->p_child = pp; 24417c478bd9Sstevel@tonic-gate 24427c478bd9Sstevel@tonic-gate /* Decrement what newproc() incremented. */ 24437c478bd9Sstevel@tonic-gate upcount_dec(crgetruid(CRED()), GLOBAL_ZONEID); 24447c478bd9Sstevel@tonic-gate /* 24457c478bd9Sstevel@tonic-gate * Our credentials are about to become kcred-like, so we don't care 24467c478bd9Sstevel@tonic-gate * about the caller's ruid. 24477c478bd9Sstevel@tonic-gate */ 24487c478bd9Sstevel@tonic-gate upcount_inc(crgetruid(kcred), zone->zone_id); 24497c478bd9Sstevel@tonic-gate mutex_exit(&pidlock); 24507c478bd9Sstevel@tonic-gate 24517c478bd9Sstevel@tonic-gate /* 24527c478bd9Sstevel@tonic-gate * getting out of global zone, so decrement lwp counts 24537c478bd9Sstevel@tonic-gate */ 24547c478bd9Sstevel@tonic-gate pj = pp->p_task->tk_proj; 24557c478bd9Sstevel@tonic-gate mutex_enter(&global_zone->zone_nlwps_lock); 24567c478bd9Sstevel@tonic-gate pj->kpj_nlwps -= pp->p_lwpcnt; 24577c478bd9Sstevel@tonic-gate global_zone->zone_nlwps -= pp->p_lwpcnt; 24587c478bd9Sstevel@tonic-gate mutex_exit(&global_zone->zone_nlwps_lock); 24597c478bd9Sstevel@tonic-gate 24607c478bd9Sstevel@tonic-gate /* 24617c478bd9Sstevel@tonic-gate * Create and join a new task in project '0' of this zone. 24627c478bd9Sstevel@tonic-gate * 24637c478bd9Sstevel@tonic-gate * We don't need to call holdlwps() since we know we're the only lwp in 24647c478bd9Sstevel@tonic-gate * this process. 24657c478bd9Sstevel@tonic-gate * 24667c478bd9Sstevel@tonic-gate * task_join() returns with p_lock held. 24677c478bd9Sstevel@tonic-gate */ 24687c478bd9Sstevel@tonic-gate tk = task_create(0, zone); 24697c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 24707c478bd9Sstevel@tonic-gate oldtk = task_join(tk, 0); 24717c478bd9Sstevel@tonic-gate mutex_exit(&curproc->p_lock); 24727c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 24737c478bd9Sstevel@tonic-gate task_rele(oldtk); 24747c478bd9Sstevel@tonic-gate 24757c478bd9Sstevel@tonic-gate /* 24767c478bd9Sstevel@tonic-gate * add lwp counts to zsched's zone, and increment project's task count 24777c478bd9Sstevel@tonic-gate * due to the task created in the above tasksys_settaskid 24787c478bd9Sstevel@tonic-gate */ 24797c478bd9Sstevel@tonic-gate pj = pp->p_task->tk_proj; 24807c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_nlwps_lock); 24817c478bd9Sstevel@tonic-gate pj->kpj_nlwps += pp->p_lwpcnt; 24827c478bd9Sstevel@tonic-gate pj->kpj_ntasks += 1; 24837c478bd9Sstevel@tonic-gate zone->zone_nlwps += pp->p_lwpcnt; 24847c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_nlwps_lock); 24857c478bd9Sstevel@tonic-gate 24867c478bd9Sstevel@tonic-gate /* 24877c478bd9Sstevel@tonic-gate * The process was created by a process in the global zone, hence the 24887c478bd9Sstevel@tonic-gate * credentials are wrong. We might as well have kcred-ish credentials. 24897c478bd9Sstevel@tonic-gate */ 24907c478bd9Sstevel@tonic-gate cr = zone->zone_kcred; 24917c478bd9Sstevel@tonic-gate crhold(cr); 24927c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_crlock); 24937c478bd9Sstevel@tonic-gate oldcred = pp->p_cred; 24947c478bd9Sstevel@tonic-gate pp->p_cred = cr; 24957c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_crlock); 24967c478bd9Sstevel@tonic-gate crfree(oldcred); 24977c478bd9Sstevel@tonic-gate 24987c478bd9Sstevel@tonic-gate /* 24997c478bd9Sstevel@tonic-gate * Hold credentials again (for thread) 25007c478bd9Sstevel@tonic-gate */ 25017c478bd9Sstevel@tonic-gate crhold(cr); 25027c478bd9Sstevel@tonic-gate 25037c478bd9Sstevel@tonic-gate /* 25047c478bd9Sstevel@tonic-gate * p_lwpcnt can't change since this is a kernel process. 25057c478bd9Sstevel@tonic-gate */ 25067c478bd9Sstevel@tonic-gate crset(pp, cr); 25077c478bd9Sstevel@tonic-gate 25087c478bd9Sstevel@tonic-gate /* 25097c478bd9Sstevel@tonic-gate * Chroot 25107c478bd9Sstevel@tonic-gate */ 25117c478bd9Sstevel@tonic-gate zone_chdir(zone->zone_rootvp, &PTOU(pp)->u_cdir, pp); 25127c478bd9Sstevel@tonic-gate zone_chdir(zone->zone_rootvp, &PTOU(pp)->u_rdir, pp); 25137c478bd9Sstevel@tonic-gate 25147c478bd9Sstevel@tonic-gate /* 25157c478bd9Sstevel@tonic-gate * Initialize zone's rctl set. 25167c478bd9Sstevel@tonic-gate */ 25177c478bd9Sstevel@tonic-gate set = rctl_set_create(); 25187c478bd9Sstevel@tonic-gate gp = rctl_set_init_prealloc(RCENTITY_ZONE); 25197c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 25207c478bd9Sstevel@tonic-gate e.rcep_p.zone = zone; 25217c478bd9Sstevel@tonic-gate e.rcep_t = RCENTITY_ZONE; 25227c478bd9Sstevel@tonic-gate zone->zone_rctls = rctl_set_init(RCENTITY_ZONE, pp, &e, set, gp); 25237c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 25247c478bd9Sstevel@tonic-gate rctl_prealloc_destroy(gp); 25257c478bd9Sstevel@tonic-gate 25267c478bd9Sstevel@tonic-gate /* 25277c478bd9Sstevel@tonic-gate * Apply the rctls passed in to zone_create(). This is basically a list 25287c478bd9Sstevel@tonic-gate * assignment: all of the old values are removed and the new ones 25297c478bd9Sstevel@tonic-gate * inserted. That is, if an empty list is passed in, all values are 25307c478bd9Sstevel@tonic-gate * removed. 25317c478bd9Sstevel@tonic-gate */ 25327c478bd9Sstevel@tonic-gate while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) { 25337c478bd9Sstevel@tonic-gate rctl_dict_entry_t *rde; 25347c478bd9Sstevel@tonic-gate rctl_hndl_t hndl; 25357c478bd9Sstevel@tonic-gate char *name; 25367c478bd9Sstevel@tonic-gate nvlist_t **nvlarray; 25377c478bd9Sstevel@tonic-gate uint_t i, nelem; 25387c478bd9Sstevel@tonic-gate int error; /* For ASSERT()s */ 25397c478bd9Sstevel@tonic-gate 25407c478bd9Sstevel@tonic-gate name = nvpair_name(nvp); 25417c478bd9Sstevel@tonic-gate hndl = rctl_hndl_lookup(name); 25427c478bd9Sstevel@tonic-gate ASSERT(hndl != -1); 25437c478bd9Sstevel@tonic-gate rde = rctl_dict_lookup_hndl(hndl); 25447c478bd9Sstevel@tonic-gate ASSERT(rde != NULL); 25457c478bd9Sstevel@tonic-gate 25467c478bd9Sstevel@tonic-gate for (; /* ever */; ) { 25477c478bd9Sstevel@tonic-gate rctl_val_t oval; 25487c478bd9Sstevel@tonic-gate 25497c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 25507c478bd9Sstevel@tonic-gate error = rctl_local_get(hndl, NULL, &oval, pp); 25517c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 25527c478bd9Sstevel@tonic-gate ASSERT(error == 0); /* Can't fail for RCTL_FIRST */ 25537c478bd9Sstevel@tonic-gate ASSERT(oval.rcv_privilege != RCPRIV_BASIC); 25547c478bd9Sstevel@tonic-gate if (oval.rcv_privilege == RCPRIV_SYSTEM) 25557c478bd9Sstevel@tonic-gate break; 25567c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 25577c478bd9Sstevel@tonic-gate error = rctl_local_delete(hndl, &oval, pp); 25587c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 25597c478bd9Sstevel@tonic-gate ASSERT(error == 0); 25607c478bd9Sstevel@tonic-gate } 25617c478bd9Sstevel@tonic-gate error = nvpair_value_nvlist_array(nvp, &nvlarray, &nelem); 25627c478bd9Sstevel@tonic-gate ASSERT(error == 0); 25637c478bd9Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 25647c478bd9Sstevel@tonic-gate rctl_val_t *nvalp; 25657c478bd9Sstevel@tonic-gate 25667c478bd9Sstevel@tonic-gate nvalp = kmem_cache_alloc(rctl_val_cache, KM_SLEEP); 25677c478bd9Sstevel@tonic-gate error = nvlist2rctlval(nvlarray[i], nvalp); 25687c478bd9Sstevel@tonic-gate ASSERT(error == 0); 25697c478bd9Sstevel@tonic-gate /* 25707c478bd9Sstevel@tonic-gate * rctl_local_insert can fail if the value being 25717c478bd9Sstevel@tonic-gate * inserted is a duplicate; this is OK. 25727c478bd9Sstevel@tonic-gate */ 25737c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 25747c478bd9Sstevel@tonic-gate if (rctl_local_insert(hndl, nvalp, pp) != 0) 25757c478bd9Sstevel@tonic-gate kmem_cache_free(rctl_val_cache, nvalp); 25767c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 25777c478bd9Sstevel@tonic-gate } 25787c478bd9Sstevel@tonic-gate } 25797c478bd9Sstevel@tonic-gate /* 25807c478bd9Sstevel@tonic-gate * Tell the world that we're done setting up. 25817c478bd9Sstevel@tonic-gate * 25827c478bd9Sstevel@tonic-gate * At this point we want to set the zone status to ZONE_IS_READY 25837c478bd9Sstevel@tonic-gate * and atomically set the zone's processor set visibility. Once 25847c478bd9Sstevel@tonic-gate * we drop pool_lock() this zone will automatically get updated 25857c478bd9Sstevel@tonic-gate * to reflect any future changes to the pools configuration. 25867c478bd9Sstevel@tonic-gate */ 25877c478bd9Sstevel@tonic-gate pool_lock(); 25887c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 25897c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 25907c478bd9Sstevel@tonic-gate zone_uniqid(zone); 25917c478bd9Sstevel@tonic-gate zone_zsd_configure(zone); 25927c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED) 25937c478bd9Sstevel@tonic-gate zone_pset_set(zone, pool_default->pool_pset->pset_id); 25947c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 25957c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) == ZONE_IS_UNINITIALIZED); 25967c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_READY); 25977c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 25987c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 25997c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 26007c478bd9Sstevel@tonic-gate pool_unlock(); 26017c478bd9Sstevel@tonic-gate 26027c478bd9Sstevel@tonic-gate /* 26037c478bd9Sstevel@tonic-gate * Once we see the zone transition to the ZONE_IS_BOOTING state, 26047c478bd9Sstevel@tonic-gate * we launch init, and set the state to running. 26057c478bd9Sstevel@tonic-gate */ 26067c478bd9Sstevel@tonic-gate zone_status_wait_cpr(zone, ZONE_IS_BOOTING, "zsched"); 26077c478bd9Sstevel@tonic-gate 26087c478bd9Sstevel@tonic-gate if (zone_status_get(zone) == ZONE_IS_BOOTING) { 26097c478bd9Sstevel@tonic-gate id_t cid; 26107c478bd9Sstevel@tonic-gate 26117c478bd9Sstevel@tonic-gate /* 26127c478bd9Sstevel@tonic-gate * Ok, this is a little complicated. We need to grab the 26137c478bd9Sstevel@tonic-gate * zone's pool's scheduling class ID; note that by now, we 26147c478bd9Sstevel@tonic-gate * are already bound to a pool if we need to be (zoneadmd 26157c478bd9Sstevel@tonic-gate * will have done that to us while we're in the READY 26167c478bd9Sstevel@tonic-gate * state). *But* the scheduling class for the zone's 'init' 26177c478bd9Sstevel@tonic-gate * must be explicitly passed to newproc, which doesn't 26187c478bd9Sstevel@tonic-gate * respect pool bindings. 26197c478bd9Sstevel@tonic-gate * 26207c478bd9Sstevel@tonic-gate * We hold the pool_lock across the call to newproc() to 26217c478bd9Sstevel@tonic-gate * close the obvious race: the pool's scheduling class 26227c478bd9Sstevel@tonic-gate * could change before we manage to create the LWP with 26237c478bd9Sstevel@tonic-gate * classid 'cid'. 26247c478bd9Sstevel@tonic-gate */ 26257c478bd9Sstevel@tonic-gate pool_lock(); 26267c478bd9Sstevel@tonic-gate cid = pool_get_class(zone->zone_pool); 26277c478bd9Sstevel@tonic-gate if (cid == -1) 26287c478bd9Sstevel@tonic-gate cid = defaultcid; 26297c478bd9Sstevel@tonic-gate 26307c478bd9Sstevel@tonic-gate /* 26317c478bd9Sstevel@tonic-gate * If this fails, zone_boot will ultimately fail. The 26327c478bd9Sstevel@tonic-gate * state of the zone will be set to SHUTTING_DOWN-- userland 26337c478bd9Sstevel@tonic-gate * will have to tear down the zone, and fail, or try again. 26347c478bd9Sstevel@tonic-gate */ 26353f2f09c1Sdp if ((zone->zone_boot_err = newproc(zone_start_init, NULL, cid, 26367c478bd9Sstevel@tonic-gate minclsyspri - 1, &ct)) != 0) { 26377c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 26387c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_SHUTTING_DOWN); 26397c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 26407c478bd9Sstevel@tonic-gate } 26417c478bd9Sstevel@tonic-gate pool_unlock(); 26427c478bd9Sstevel@tonic-gate } 26437c478bd9Sstevel@tonic-gate 26447c478bd9Sstevel@tonic-gate /* 26457c478bd9Sstevel@tonic-gate * Wait for zone_destroy() to be called. This is what we spend 26467c478bd9Sstevel@tonic-gate * most of our life doing. 26477c478bd9Sstevel@tonic-gate */ 26487c478bd9Sstevel@tonic-gate zone_status_wait_cpr(zone, ZONE_IS_DYING, "zsched"); 26497c478bd9Sstevel@tonic-gate 26507c478bd9Sstevel@tonic-gate if (ct) 26517c478bd9Sstevel@tonic-gate /* 26527c478bd9Sstevel@tonic-gate * At this point the process contract should be empty. 26537c478bd9Sstevel@tonic-gate * (Though if it isn't, it's not the end of the world.) 26547c478bd9Sstevel@tonic-gate */ 26557c478bd9Sstevel@tonic-gate VERIFY(contract_abandon(ct, curproc, B_TRUE) == 0); 26567c478bd9Sstevel@tonic-gate 26577c478bd9Sstevel@tonic-gate /* 26587c478bd9Sstevel@tonic-gate * Allow kcred to be freed when all referring processes 26597c478bd9Sstevel@tonic-gate * (including this one) go away. We can't just do this in 26607c478bd9Sstevel@tonic-gate * zone_free because we need to wait for the zone_cred_ref to 26617c478bd9Sstevel@tonic-gate * drop to 0 before calling zone_free, and the existence of 26627c478bd9Sstevel@tonic-gate * zone_kcred will prevent that. Thus, we call crfree here to 26637c478bd9Sstevel@tonic-gate * balance the crdup in zone_create. The crhold calls earlier 26647c478bd9Sstevel@tonic-gate * in zsched will be dropped when the thread and process exit. 26657c478bd9Sstevel@tonic-gate */ 26667c478bd9Sstevel@tonic-gate crfree(zone->zone_kcred); 26677c478bd9Sstevel@tonic-gate zone->zone_kcred = NULL; 26687c478bd9Sstevel@tonic-gate 26697c478bd9Sstevel@tonic-gate exit(CLD_EXITED, 0); 26707c478bd9Sstevel@tonic-gate } 26717c478bd9Sstevel@tonic-gate 26727c478bd9Sstevel@tonic-gate /* 26737c478bd9Sstevel@tonic-gate * Helper function to determine if there are any submounts of the 26747c478bd9Sstevel@tonic-gate * provided path. Used to make sure the zone doesn't "inherit" any 26757c478bd9Sstevel@tonic-gate * mounts from before it is created. 26767c478bd9Sstevel@tonic-gate */ 26777c478bd9Sstevel@tonic-gate static uint_t 26787c478bd9Sstevel@tonic-gate zone_mount_count(const char *rootpath) 26797c478bd9Sstevel@tonic-gate { 26807c478bd9Sstevel@tonic-gate vfs_t *vfsp; 26817c478bd9Sstevel@tonic-gate uint_t count = 0; 26827c478bd9Sstevel@tonic-gate size_t rootpathlen = strlen(rootpath); 26837c478bd9Sstevel@tonic-gate 26847c478bd9Sstevel@tonic-gate /* 26857c478bd9Sstevel@tonic-gate * Holding zonehash_lock prevents race conditions with 26867c478bd9Sstevel@tonic-gate * vfs_list_add()/vfs_list_remove() since we serialize with 26877c478bd9Sstevel@tonic-gate * zone_find_by_path(). 26887c478bd9Sstevel@tonic-gate */ 26897c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 26907c478bd9Sstevel@tonic-gate /* 26917c478bd9Sstevel@tonic-gate * The rootpath must end with a '/' 26927c478bd9Sstevel@tonic-gate */ 26937c478bd9Sstevel@tonic-gate ASSERT(rootpath[rootpathlen - 1] == '/'); 26947c478bd9Sstevel@tonic-gate 26957c478bd9Sstevel@tonic-gate /* 26967c478bd9Sstevel@tonic-gate * This intentionally does not count the rootpath itself if that 26977c478bd9Sstevel@tonic-gate * happens to be a mount point. 26987c478bd9Sstevel@tonic-gate */ 26997c478bd9Sstevel@tonic-gate vfs_list_read_lock(); 27007c478bd9Sstevel@tonic-gate vfsp = rootvfs; 27017c478bd9Sstevel@tonic-gate do { 27027c478bd9Sstevel@tonic-gate if (strncmp(rootpath, refstr_value(vfsp->vfs_mntpt), 27037c478bd9Sstevel@tonic-gate rootpathlen) == 0) 27047c478bd9Sstevel@tonic-gate count++; 27057c478bd9Sstevel@tonic-gate vfsp = vfsp->vfs_next; 27067c478bd9Sstevel@tonic-gate } while (vfsp != rootvfs); 27077c478bd9Sstevel@tonic-gate vfs_list_unlock(); 27087c478bd9Sstevel@tonic-gate return (count); 27097c478bd9Sstevel@tonic-gate } 27107c478bd9Sstevel@tonic-gate 27117c478bd9Sstevel@tonic-gate /* 27127c478bd9Sstevel@tonic-gate * Helper function to make sure that a zone created on 'rootpath' 27137c478bd9Sstevel@tonic-gate * wouldn't end up containing other zones' rootpaths. 27147c478bd9Sstevel@tonic-gate */ 27157c478bd9Sstevel@tonic-gate static boolean_t 27167c478bd9Sstevel@tonic-gate zone_is_nested(const char *rootpath) 27177c478bd9Sstevel@tonic-gate { 27187c478bd9Sstevel@tonic-gate zone_t *zone; 27197c478bd9Sstevel@tonic-gate size_t rootpathlen = strlen(rootpath); 27207c478bd9Sstevel@tonic-gate size_t len; 27217c478bd9Sstevel@tonic-gate 27227c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 27237c478bd9Sstevel@tonic-gate 27247c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 27257c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 27267c478bd9Sstevel@tonic-gate if (zone == global_zone) 27277c478bd9Sstevel@tonic-gate continue; 27287c478bd9Sstevel@tonic-gate len = strlen(zone->zone_rootpath); 27297c478bd9Sstevel@tonic-gate if (strncmp(rootpath, zone->zone_rootpath, 27307c478bd9Sstevel@tonic-gate MIN(rootpathlen, len)) == 0) 27317c478bd9Sstevel@tonic-gate return (B_TRUE); 27327c478bd9Sstevel@tonic-gate } 27337c478bd9Sstevel@tonic-gate return (B_FALSE); 27347c478bd9Sstevel@tonic-gate } 27357c478bd9Sstevel@tonic-gate 27367c478bd9Sstevel@tonic-gate static int 2737821c4a97Sdp zone_set_privset(zone_t *zone, const priv_set_t *zone_privs, 2738821c4a97Sdp size_t zone_privssz) 27397c478bd9Sstevel@tonic-gate { 27407c478bd9Sstevel@tonic-gate priv_set_t *privs = kmem_alloc(sizeof (priv_set_t), KM_SLEEP); 27417c478bd9Sstevel@tonic-gate 2742821c4a97Sdp if (zone_privssz < sizeof (priv_set_t)) 2743821c4a97Sdp return (set_errno(ENOMEM)); 2744821c4a97Sdp 27457c478bd9Sstevel@tonic-gate if (copyin(zone_privs, privs, sizeof (priv_set_t))) { 27467c478bd9Sstevel@tonic-gate kmem_free(privs, sizeof (priv_set_t)); 27477c478bd9Sstevel@tonic-gate return (EFAULT); 27487c478bd9Sstevel@tonic-gate } 27497c478bd9Sstevel@tonic-gate 27507c478bd9Sstevel@tonic-gate zone->zone_privset = privs; 27517c478bd9Sstevel@tonic-gate return (0); 27527c478bd9Sstevel@tonic-gate } 27537c478bd9Sstevel@tonic-gate 27547c478bd9Sstevel@tonic-gate /* 27557c478bd9Sstevel@tonic-gate * We make creative use of nvlists to pass in rctls from userland. The list is 27567c478bd9Sstevel@tonic-gate * a list of the following structures: 27577c478bd9Sstevel@tonic-gate * 27587c478bd9Sstevel@tonic-gate * (name = rctl_name, value = nvpair_list_array) 27597c478bd9Sstevel@tonic-gate * 27607c478bd9Sstevel@tonic-gate * Where each element of the nvpair_list_array is of the form: 27617c478bd9Sstevel@tonic-gate * 27627c478bd9Sstevel@tonic-gate * [(name = "privilege", value = RCPRIV_PRIVILEGED), 27637c478bd9Sstevel@tonic-gate * (name = "limit", value = uint64_t), 27647c478bd9Sstevel@tonic-gate * (name = "action", value = (RCTL_LOCAL_NOACTION || RCTL_LOCAL_DENY))] 27657c478bd9Sstevel@tonic-gate */ 27667c478bd9Sstevel@tonic-gate static int 27677c478bd9Sstevel@tonic-gate parse_rctls(caddr_t ubuf, size_t buflen, nvlist_t **nvlp) 27687c478bd9Sstevel@tonic-gate { 27697c478bd9Sstevel@tonic-gate nvpair_t *nvp = NULL; 27707c478bd9Sstevel@tonic-gate nvlist_t *nvl = NULL; 27717c478bd9Sstevel@tonic-gate char *kbuf; 27727c478bd9Sstevel@tonic-gate int error; 27737c478bd9Sstevel@tonic-gate rctl_val_t rv; 27747c478bd9Sstevel@tonic-gate 27757c478bd9Sstevel@tonic-gate *nvlp = NULL; 27767c478bd9Sstevel@tonic-gate 27777c478bd9Sstevel@tonic-gate if (buflen == 0) 27787c478bd9Sstevel@tonic-gate return (0); 27797c478bd9Sstevel@tonic-gate 27807c478bd9Sstevel@tonic-gate if ((kbuf = kmem_alloc(buflen, KM_NOSLEEP)) == NULL) 27817c478bd9Sstevel@tonic-gate return (ENOMEM); 27827c478bd9Sstevel@tonic-gate if (copyin(ubuf, kbuf, buflen)) { 27837c478bd9Sstevel@tonic-gate error = EFAULT; 27847c478bd9Sstevel@tonic-gate goto out; 27857c478bd9Sstevel@tonic-gate } 27867c478bd9Sstevel@tonic-gate if (nvlist_unpack(kbuf, buflen, &nvl, KM_SLEEP) != 0) { 27877c478bd9Sstevel@tonic-gate /* 27887c478bd9Sstevel@tonic-gate * nvl may have been allocated/free'd, but the value set to 27897c478bd9Sstevel@tonic-gate * non-NULL, so we reset it here. 27907c478bd9Sstevel@tonic-gate */ 27917c478bd9Sstevel@tonic-gate nvl = NULL; 27927c478bd9Sstevel@tonic-gate error = EINVAL; 27937c478bd9Sstevel@tonic-gate goto out; 27947c478bd9Sstevel@tonic-gate } 27957c478bd9Sstevel@tonic-gate while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) { 27967c478bd9Sstevel@tonic-gate rctl_dict_entry_t *rde; 27977c478bd9Sstevel@tonic-gate rctl_hndl_t hndl; 27987c478bd9Sstevel@tonic-gate nvlist_t **nvlarray; 27997c478bd9Sstevel@tonic-gate uint_t i, nelem; 28007c478bd9Sstevel@tonic-gate char *name; 28017c478bd9Sstevel@tonic-gate 28027c478bd9Sstevel@tonic-gate error = EINVAL; 28037c478bd9Sstevel@tonic-gate name = nvpair_name(nvp); 28047c478bd9Sstevel@tonic-gate if (strncmp(nvpair_name(nvp), "zone.", sizeof ("zone.") - 1) 28057c478bd9Sstevel@tonic-gate != 0 || nvpair_type(nvp) != DATA_TYPE_NVLIST_ARRAY) { 28067c478bd9Sstevel@tonic-gate goto out; 28077c478bd9Sstevel@tonic-gate } 28087c478bd9Sstevel@tonic-gate if ((hndl = rctl_hndl_lookup(name)) == -1) { 28097c478bd9Sstevel@tonic-gate goto out; 28107c478bd9Sstevel@tonic-gate } 28117c478bd9Sstevel@tonic-gate rde = rctl_dict_lookup_hndl(hndl); 28127c478bd9Sstevel@tonic-gate error = nvpair_value_nvlist_array(nvp, &nvlarray, &nelem); 28137c478bd9Sstevel@tonic-gate ASSERT(error == 0); 28147c478bd9Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 28157c478bd9Sstevel@tonic-gate if (error = nvlist2rctlval(nvlarray[i], &rv)) 28167c478bd9Sstevel@tonic-gate goto out; 28177c478bd9Sstevel@tonic-gate } 28187c478bd9Sstevel@tonic-gate if (rctl_invalid_value(rde, &rv)) { 28197c478bd9Sstevel@tonic-gate error = EINVAL; 28207c478bd9Sstevel@tonic-gate goto out; 28217c478bd9Sstevel@tonic-gate } 28227c478bd9Sstevel@tonic-gate } 28237c478bd9Sstevel@tonic-gate error = 0; 28247c478bd9Sstevel@tonic-gate *nvlp = nvl; 28257c478bd9Sstevel@tonic-gate out: 28267c478bd9Sstevel@tonic-gate kmem_free(kbuf, buflen); 28277c478bd9Sstevel@tonic-gate if (error && nvl != NULL) 28287c478bd9Sstevel@tonic-gate nvlist_free(nvl); 28297c478bd9Sstevel@tonic-gate return (error); 28307c478bd9Sstevel@tonic-gate } 28317c478bd9Sstevel@tonic-gate 28327c478bd9Sstevel@tonic-gate int 28337c478bd9Sstevel@tonic-gate zone_create_error(int er_error, int er_ext, int *er_out) { 28347c478bd9Sstevel@tonic-gate if (er_out != NULL) { 28357c478bd9Sstevel@tonic-gate if (copyout(&er_ext, er_out, sizeof (int))) { 28367c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 28377c478bd9Sstevel@tonic-gate } 28387c478bd9Sstevel@tonic-gate } 28397c478bd9Sstevel@tonic-gate return (set_errno(er_error)); 28407c478bd9Sstevel@tonic-gate } 28417c478bd9Sstevel@tonic-gate 284245916cd2Sjpk static int 284345916cd2Sjpk zone_set_label(zone_t *zone, const bslabel_t *lab, uint32_t doi) 284445916cd2Sjpk { 284545916cd2Sjpk ts_label_t *tsl; 284645916cd2Sjpk bslabel_t blab; 284745916cd2Sjpk 284845916cd2Sjpk /* Get label from user */ 284945916cd2Sjpk if (copyin(lab, &blab, sizeof (blab)) != 0) 285045916cd2Sjpk return (EFAULT); 285145916cd2Sjpk tsl = labelalloc(&blab, doi, KM_NOSLEEP); 285245916cd2Sjpk if (tsl == NULL) 285345916cd2Sjpk return (ENOMEM); 285445916cd2Sjpk 285545916cd2Sjpk zone->zone_slabel = tsl; 285645916cd2Sjpk return (0); 285745916cd2Sjpk } 285845916cd2Sjpk 2859fa9e4066Sahrens /* 2860fa9e4066Sahrens * Parses a comma-separated list of ZFS datasets into a per-zone dictionary. 2861fa9e4066Sahrens */ 2862fa9e4066Sahrens static int 2863fa9e4066Sahrens parse_zfs(zone_t *zone, caddr_t ubuf, size_t buflen) 2864fa9e4066Sahrens { 2865fa9e4066Sahrens char *kbuf; 2866fa9e4066Sahrens char *dataset, *next; 2867fa9e4066Sahrens zone_dataset_t *zd; 2868fa9e4066Sahrens size_t len; 2869fa9e4066Sahrens 2870fa9e4066Sahrens if (ubuf == NULL || buflen == 0) 2871fa9e4066Sahrens return (0); 2872fa9e4066Sahrens 2873fa9e4066Sahrens if ((kbuf = kmem_alloc(buflen, KM_NOSLEEP)) == NULL) 2874fa9e4066Sahrens return (ENOMEM); 2875fa9e4066Sahrens 2876fa9e4066Sahrens if (copyin(ubuf, kbuf, buflen) != 0) { 2877fa9e4066Sahrens kmem_free(kbuf, buflen); 2878fa9e4066Sahrens return (EFAULT); 2879fa9e4066Sahrens } 2880fa9e4066Sahrens 2881fa9e4066Sahrens dataset = next = kbuf; 2882fa9e4066Sahrens for (;;) { 2883fa9e4066Sahrens zd = kmem_alloc(sizeof (zone_dataset_t), KM_SLEEP); 2884fa9e4066Sahrens 2885fa9e4066Sahrens next = strchr(dataset, ','); 2886fa9e4066Sahrens 2887fa9e4066Sahrens if (next == NULL) 2888fa9e4066Sahrens len = strlen(dataset); 2889fa9e4066Sahrens else 2890fa9e4066Sahrens len = next - dataset; 2891fa9e4066Sahrens 2892fa9e4066Sahrens zd->zd_dataset = kmem_alloc(len + 1, KM_SLEEP); 2893fa9e4066Sahrens bcopy(dataset, zd->zd_dataset, len); 2894fa9e4066Sahrens zd->zd_dataset[len] = '\0'; 2895fa9e4066Sahrens 2896fa9e4066Sahrens list_insert_head(&zone->zone_datasets, zd); 2897fa9e4066Sahrens 2898fa9e4066Sahrens if (next == NULL) 2899fa9e4066Sahrens break; 2900fa9e4066Sahrens 2901fa9e4066Sahrens dataset = next + 1; 2902fa9e4066Sahrens } 2903fa9e4066Sahrens 2904fa9e4066Sahrens kmem_free(kbuf, buflen); 2905fa9e4066Sahrens return (0); 2906fa9e4066Sahrens } 2907fa9e4066Sahrens 29087c478bd9Sstevel@tonic-gate /* 29097c478bd9Sstevel@tonic-gate * System call to create/initialize a new zone named 'zone_name', rooted 29107c478bd9Sstevel@tonic-gate * at 'zone_root', with a zone-wide privilege limit set of 'zone_privs', 291145916cd2Sjpk * and initialized with the zone-wide rctls described in 'rctlbuf', and 291245916cd2Sjpk * with labeling set by 'match', 'doi', and 'label'. 29137c478bd9Sstevel@tonic-gate * 29147c478bd9Sstevel@tonic-gate * If extended error is non-null, we may use it to return more detailed 29157c478bd9Sstevel@tonic-gate * error information. 29167c478bd9Sstevel@tonic-gate */ 29177c478bd9Sstevel@tonic-gate static zoneid_t 29187c478bd9Sstevel@tonic-gate zone_create(const char *zone_name, const char *zone_root, 2919821c4a97Sdp const priv_set_t *zone_privs, size_t zone_privssz, 2920821c4a97Sdp caddr_t rctlbuf, size_t rctlbufsz, 292145916cd2Sjpk caddr_t zfsbuf, size_t zfsbufsz, int *extended_error, 292245916cd2Sjpk int match, uint32_t doi, const bslabel_t *label) 29237c478bd9Sstevel@tonic-gate { 29247c478bd9Sstevel@tonic-gate struct zsched_arg zarg; 29257c478bd9Sstevel@tonic-gate nvlist_t *rctls = NULL; 29267c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 29277c478bd9Sstevel@tonic-gate zone_t *zone, *ztmp; 29287c478bd9Sstevel@tonic-gate zoneid_t zoneid; 29297c478bd9Sstevel@tonic-gate int error; 29307c478bd9Sstevel@tonic-gate int error2 = 0; 29317c478bd9Sstevel@tonic-gate char *str; 29327c478bd9Sstevel@tonic-gate cred_t *zkcr; 293348451833Scarlsonj boolean_t insert_label_hash; 29347c478bd9Sstevel@tonic-gate 29357c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 29367c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 29377c478bd9Sstevel@tonic-gate 29387c478bd9Sstevel@tonic-gate /* can't boot zone from within chroot environment */ 29397c478bd9Sstevel@tonic-gate if (PTOU(pp)->u_rdir != NULL && PTOU(pp)->u_rdir != rootdir) 29407c478bd9Sstevel@tonic-gate return (zone_create_error(ENOTSUP, ZE_CHROOTED, 2941821c4a97Sdp extended_error)); 29427c478bd9Sstevel@tonic-gate 29437c478bd9Sstevel@tonic-gate zone = kmem_zalloc(sizeof (zone_t), KM_SLEEP); 29447c478bd9Sstevel@tonic-gate zoneid = zone->zone_id = id_alloc(zoneid_space); 29457c478bd9Sstevel@tonic-gate zone->zone_status = ZONE_IS_UNINITIALIZED; 29467c478bd9Sstevel@tonic-gate zone->zone_pool = pool_default; 29477c478bd9Sstevel@tonic-gate zone->zone_pool_mod = gethrtime(); 29487c478bd9Sstevel@tonic-gate zone->zone_psetid = ZONE_PS_INVAL; 29497c478bd9Sstevel@tonic-gate zone->zone_ncpus = 0; 29507c478bd9Sstevel@tonic-gate zone->zone_ncpus_online = 0; 2951*9acbbeafSnn zone->zone_restart_init = B_TRUE; 2952*9acbbeafSnn zone->zone_brand = &native_brand; 2953*9acbbeafSnn zone->zone_initname = NULL; 29547c478bd9Sstevel@tonic-gate mutex_init(&zone->zone_lock, NULL, MUTEX_DEFAULT, NULL); 29557c478bd9Sstevel@tonic-gate mutex_init(&zone->zone_nlwps_lock, NULL, MUTEX_DEFAULT, NULL); 29567c478bd9Sstevel@tonic-gate cv_init(&zone->zone_cv, NULL, CV_DEFAULT, NULL); 29577c478bd9Sstevel@tonic-gate list_create(&zone->zone_zsd, sizeof (struct zsd_entry), 29587c478bd9Sstevel@tonic-gate offsetof(struct zsd_entry, zsd_linkage)); 2959fa9e4066Sahrens list_create(&zone->zone_datasets, sizeof (zone_dataset_t), 2960fa9e4066Sahrens offsetof(zone_dataset_t, zd_linkage)); 296145916cd2Sjpk rw_init(&zone->zone_mlps.mlpl_rwlock, NULL, RW_DEFAULT, NULL); 29627c478bd9Sstevel@tonic-gate 29637c478bd9Sstevel@tonic-gate if ((error = zone_set_name(zone, zone_name)) != 0) { 29647c478bd9Sstevel@tonic-gate zone_free(zone); 29657c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 29667c478bd9Sstevel@tonic-gate } 29677c478bd9Sstevel@tonic-gate 29687c478bd9Sstevel@tonic-gate if ((error = zone_set_root(zone, zone_root)) != 0) { 29697c478bd9Sstevel@tonic-gate zone_free(zone); 29707c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 29717c478bd9Sstevel@tonic-gate } 2972821c4a97Sdp if ((error = zone_set_privset(zone, zone_privs, zone_privssz)) != 0) { 29737c478bd9Sstevel@tonic-gate zone_free(zone); 29747c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 29757c478bd9Sstevel@tonic-gate } 29767c478bd9Sstevel@tonic-gate 29777c478bd9Sstevel@tonic-gate /* initialize node name to be the same as zone name */ 29787c478bd9Sstevel@tonic-gate zone->zone_nodename = kmem_alloc(_SYS_NMLN, KM_SLEEP); 29797c478bd9Sstevel@tonic-gate (void) strncpy(zone->zone_nodename, zone->zone_name, _SYS_NMLN); 29807c478bd9Sstevel@tonic-gate zone->zone_nodename[_SYS_NMLN - 1] = '\0'; 29817c478bd9Sstevel@tonic-gate 29827c478bd9Sstevel@tonic-gate zone->zone_domain = kmem_alloc(_SYS_NMLN, KM_SLEEP); 29837c478bd9Sstevel@tonic-gate zone->zone_domain[0] = '\0'; 29847c478bd9Sstevel@tonic-gate zone->zone_shares = 1; 2985824c205fSml zone->zone_shmmax = 0; 2986824c205fSml zone->zone_ipc.ipcq_shmmni = 0; 2987824c205fSml zone->zone_ipc.ipcq_semmni = 0; 2988824c205fSml zone->zone_ipc.ipcq_msgmni = 0; 29897c478bd9Sstevel@tonic-gate zone->zone_bootargs = NULL; 29903f2f09c1Sdp zone->zone_initname = 29913f2f09c1Sdp kmem_alloc(strlen(zone_default_initname) + 1, KM_SLEEP); 29923f2f09c1Sdp (void) strcpy(zone->zone_initname, zone_default_initname); 29937c478bd9Sstevel@tonic-gate 29947c478bd9Sstevel@tonic-gate /* 29957c478bd9Sstevel@tonic-gate * Zsched initializes the rctls. 29967c478bd9Sstevel@tonic-gate */ 29977c478bd9Sstevel@tonic-gate zone->zone_rctls = NULL; 29987c478bd9Sstevel@tonic-gate 29997c478bd9Sstevel@tonic-gate if ((error = parse_rctls(rctlbuf, rctlbufsz, &rctls)) != 0) { 30007c478bd9Sstevel@tonic-gate zone_free(zone); 30017c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 30027c478bd9Sstevel@tonic-gate } 30037c478bd9Sstevel@tonic-gate 3004fa9e4066Sahrens if ((error = parse_zfs(zone, zfsbuf, zfsbufsz)) != 0) { 3005fa9e4066Sahrens zone_free(zone); 3006fa9e4066Sahrens return (set_errno(error)); 3007fa9e4066Sahrens } 3008fa9e4066Sahrens 300945916cd2Sjpk /* 301045916cd2Sjpk * Read in the trusted system parameters: 301145916cd2Sjpk * match flag and sensitivity label. 301245916cd2Sjpk */ 301345916cd2Sjpk zone->zone_match = match; 301448451833Scarlsonj if (is_system_labeled() && !(zone->zone_flags & ZF_IS_SCRATCH)) { 301545916cd2Sjpk error = zone_set_label(zone, label, doi); 301645916cd2Sjpk if (error != 0) { 301745916cd2Sjpk zone_free(zone); 301845916cd2Sjpk return (set_errno(error)); 301945916cd2Sjpk } 302048451833Scarlsonj insert_label_hash = B_TRUE; 302145916cd2Sjpk } else { 302245916cd2Sjpk /* all zones get an admin_low label if system is not labeled */ 302345916cd2Sjpk zone->zone_slabel = l_admin_low; 302445916cd2Sjpk label_hold(l_admin_low); 302548451833Scarlsonj insert_label_hash = B_FALSE; 302645916cd2Sjpk } 302745916cd2Sjpk 30287c478bd9Sstevel@tonic-gate /* 30297c478bd9Sstevel@tonic-gate * Stop all lwps since that's what normally happens as part of fork(). 30307c478bd9Sstevel@tonic-gate * This needs to happen before we grab any locks to avoid deadlock 30317c478bd9Sstevel@tonic-gate * (another lwp in the process could be waiting for the held lock). 30327c478bd9Sstevel@tonic-gate */ 30337c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp && !holdlwps(SHOLDFORK)) { 30347c478bd9Sstevel@tonic-gate zone_free(zone); 30357c478bd9Sstevel@tonic-gate if (rctls) 30367c478bd9Sstevel@tonic-gate nvlist_free(rctls); 30377c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 30387c478bd9Sstevel@tonic-gate } 30397c478bd9Sstevel@tonic-gate 30407c478bd9Sstevel@tonic-gate if (block_mounts() == 0) { 30417c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 30427c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 30437c478bd9Sstevel@tonic-gate continuelwps(pp); 30447c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 30457c478bd9Sstevel@tonic-gate zone_free(zone); 30467c478bd9Sstevel@tonic-gate if (rctls) 30477c478bd9Sstevel@tonic-gate nvlist_free(rctls); 30487c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 30497c478bd9Sstevel@tonic-gate } 30507c478bd9Sstevel@tonic-gate 30517c478bd9Sstevel@tonic-gate /* 30527c478bd9Sstevel@tonic-gate * Set up credential for kernel access. After this, any errors 30537c478bd9Sstevel@tonic-gate * should go through the dance in errout rather than calling 30547c478bd9Sstevel@tonic-gate * zone_free directly. 30557c478bd9Sstevel@tonic-gate */ 30567c478bd9Sstevel@tonic-gate zone->zone_kcred = crdup(kcred); 30577c478bd9Sstevel@tonic-gate crsetzone(zone->zone_kcred, zone); 30587c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_PPRIV(zone->zone_kcred)); 30597c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_EPRIV(zone->zone_kcred)); 30607c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_IPRIV(zone->zone_kcred)); 30617c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_LPRIV(zone->zone_kcred)); 30627c478bd9Sstevel@tonic-gate 30637c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 30647c478bd9Sstevel@tonic-gate /* 30657c478bd9Sstevel@tonic-gate * Make sure zone doesn't already exist. 306645916cd2Sjpk * 306745916cd2Sjpk * If the system and zone are labeled, 306845916cd2Sjpk * make sure no other zone exists that has the same label. 30697c478bd9Sstevel@tonic-gate */ 307045916cd2Sjpk if ((ztmp = zone_find_all_by_name(zone->zone_name)) != NULL || 307148451833Scarlsonj (insert_label_hash && 307245916cd2Sjpk (ztmp = zone_find_all_by_label(zone->zone_slabel)) != NULL)) { 30737c478bd9Sstevel@tonic-gate zone_status_t status; 30747c478bd9Sstevel@tonic-gate 30757c478bd9Sstevel@tonic-gate status = zone_status_get(ztmp); 30767c478bd9Sstevel@tonic-gate if (status == ZONE_IS_READY || status == ZONE_IS_RUNNING) 30777c478bd9Sstevel@tonic-gate error = EEXIST; 30787c478bd9Sstevel@tonic-gate else 30797c478bd9Sstevel@tonic-gate error = EBUSY; 30807c478bd9Sstevel@tonic-gate goto errout; 30817c478bd9Sstevel@tonic-gate } 30827c478bd9Sstevel@tonic-gate 30837c478bd9Sstevel@tonic-gate /* 30847c478bd9Sstevel@tonic-gate * Don't allow zone creations which would cause one zone's rootpath to 30857c478bd9Sstevel@tonic-gate * be accessible from that of another (non-global) zone. 30867c478bd9Sstevel@tonic-gate */ 30877c478bd9Sstevel@tonic-gate if (zone_is_nested(zone->zone_rootpath)) { 30887c478bd9Sstevel@tonic-gate error = EBUSY; 30897c478bd9Sstevel@tonic-gate goto errout; 30907c478bd9Sstevel@tonic-gate } 30917c478bd9Sstevel@tonic-gate 30927c478bd9Sstevel@tonic-gate ASSERT(zonecount != 0); /* check for leaks */ 30937c478bd9Sstevel@tonic-gate if (zonecount + 1 > maxzones) { 30947c478bd9Sstevel@tonic-gate error = ENOMEM; 30957c478bd9Sstevel@tonic-gate goto errout; 30967c478bd9Sstevel@tonic-gate } 30977c478bd9Sstevel@tonic-gate 30987c478bd9Sstevel@tonic-gate if (zone_mount_count(zone->zone_rootpath) != 0) { 30997c478bd9Sstevel@tonic-gate error = EBUSY; 31007c478bd9Sstevel@tonic-gate error2 = ZE_AREMOUNTS; 31017c478bd9Sstevel@tonic-gate goto errout; 31027c478bd9Sstevel@tonic-gate } 31037c478bd9Sstevel@tonic-gate 31047c478bd9Sstevel@tonic-gate /* 31057c478bd9Sstevel@tonic-gate * Zone is still incomplete, but we need to drop all locks while 31067c478bd9Sstevel@tonic-gate * zsched() initializes this zone's kernel process. We 31077c478bd9Sstevel@tonic-gate * optimistically add the zone to the hashtable and associated 31087c478bd9Sstevel@tonic-gate * lists so a parallel zone_create() doesn't try to create the 31097c478bd9Sstevel@tonic-gate * same zone. 31107c478bd9Sstevel@tonic-gate */ 31117c478bd9Sstevel@tonic-gate zonecount++; 31127c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyid, 31137c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_id, 31147c478bd9Sstevel@tonic-gate (mod_hash_val_t)(uintptr_t)zone); 31157c478bd9Sstevel@tonic-gate str = kmem_alloc(strlen(zone->zone_name) + 1, KM_SLEEP); 31167c478bd9Sstevel@tonic-gate (void) strcpy(str, zone->zone_name); 31177c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyname, (mod_hash_key_t)str, 31187c478bd9Sstevel@tonic-gate (mod_hash_val_t)(uintptr_t)zone); 311948451833Scarlsonj if (insert_label_hash) { 312045916cd2Sjpk (void) mod_hash_insert(zonehashbylabel, 312145916cd2Sjpk (mod_hash_key_t)zone->zone_slabel, (mod_hash_val_t)zone); 312248451833Scarlsonj zone->zone_flags |= ZF_HASHED_LABEL; 312345916cd2Sjpk } 312445916cd2Sjpk 31257c478bd9Sstevel@tonic-gate /* 31267c478bd9Sstevel@tonic-gate * Insert into active list. At this point there are no 'hold's 31277c478bd9Sstevel@tonic-gate * on the zone, but everyone else knows not to use it, so we can 31287c478bd9Sstevel@tonic-gate * continue to use it. zsched() will do a zone_hold() if the 31297c478bd9Sstevel@tonic-gate * newproc() is successful. 31307c478bd9Sstevel@tonic-gate */ 31317c478bd9Sstevel@tonic-gate list_insert_tail(&zone_active, zone); 31327c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 31337c478bd9Sstevel@tonic-gate 31347c478bd9Sstevel@tonic-gate zarg.zone = zone; 31357c478bd9Sstevel@tonic-gate zarg.nvlist = rctls; 31367c478bd9Sstevel@tonic-gate /* 31377c478bd9Sstevel@tonic-gate * The process, task, and project rctls are probably wrong; 31387c478bd9Sstevel@tonic-gate * we need an interface to get the default values of all rctls, 31397c478bd9Sstevel@tonic-gate * and initialize zsched appropriately. I'm not sure that that 31407c478bd9Sstevel@tonic-gate * makes much of a difference, though. 31417c478bd9Sstevel@tonic-gate */ 31427c478bd9Sstevel@tonic-gate if (error = newproc(zsched, (void *)&zarg, syscid, minclsyspri, NULL)) { 31437c478bd9Sstevel@tonic-gate /* 31447c478bd9Sstevel@tonic-gate * We need to undo all globally visible state. 31457c478bd9Sstevel@tonic-gate */ 31467c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 31477c478bd9Sstevel@tonic-gate list_remove(&zone_active, zone); 314848451833Scarlsonj if (zone->zone_flags & ZF_HASHED_LABEL) { 314945916cd2Sjpk ASSERT(zone->zone_slabel != NULL); 315045916cd2Sjpk (void) mod_hash_destroy(zonehashbylabel, 315145916cd2Sjpk (mod_hash_key_t)zone->zone_slabel); 315245916cd2Sjpk } 31537c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyname, 31547c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_name); 31557c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyid, 31567c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_id); 31577c478bd9Sstevel@tonic-gate ASSERT(zonecount > 1); 31587c478bd9Sstevel@tonic-gate zonecount--; 31597c478bd9Sstevel@tonic-gate goto errout; 31607c478bd9Sstevel@tonic-gate } 31617c478bd9Sstevel@tonic-gate 31627c478bd9Sstevel@tonic-gate /* 31637c478bd9Sstevel@tonic-gate * Zone creation can't fail from now on. 31647c478bd9Sstevel@tonic-gate */ 31657c478bd9Sstevel@tonic-gate 31667c478bd9Sstevel@tonic-gate /* 31677c478bd9Sstevel@tonic-gate * Let the other lwps continue. 31687c478bd9Sstevel@tonic-gate */ 31697c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 31707c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 31717c478bd9Sstevel@tonic-gate continuelwps(pp); 31727c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 31737c478bd9Sstevel@tonic-gate 31747c478bd9Sstevel@tonic-gate /* 31757c478bd9Sstevel@tonic-gate * Wait for zsched to finish initializing the zone. 31767c478bd9Sstevel@tonic-gate */ 31777c478bd9Sstevel@tonic-gate zone_status_wait(zone, ZONE_IS_READY); 31787c478bd9Sstevel@tonic-gate /* 31797c478bd9Sstevel@tonic-gate * The zone is fully visible, so we can let mounts progress. 31807c478bd9Sstevel@tonic-gate */ 31817c478bd9Sstevel@tonic-gate resume_mounts(); 31827c478bd9Sstevel@tonic-gate if (rctls) 31837c478bd9Sstevel@tonic-gate nvlist_free(rctls); 31847c478bd9Sstevel@tonic-gate 31857c478bd9Sstevel@tonic-gate return (zoneid); 31867c478bd9Sstevel@tonic-gate 31877c478bd9Sstevel@tonic-gate errout: 31887c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 31897c478bd9Sstevel@tonic-gate /* 31907c478bd9Sstevel@tonic-gate * Let the other lwps continue. 31917c478bd9Sstevel@tonic-gate */ 31927c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 31937c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 31947c478bd9Sstevel@tonic-gate continuelwps(pp); 31957c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 31967c478bd9Sstevel@tonic-gate 31977c478bd9Sstevel@tonic-gate resume_mounts(); 31987c478bd9Sstevel@tonic-gate if (rctls) 31997c478bd9Sstevel@tonic-gate nvlist_free(rctls); 32007c478bd9Sstevel@tonic-gate /* 32017c478bd9Sstevel@tonic-gate * There is currently one reference to the zone, a cred_ref from 32027c478bd9Sstevel@tonic-gate * zone_kcred. To free the zone, we call crfree, which will call 32037c478bd9Sstevel@tonic-gate * zone_cred_rele, which will call zone_free. 32047c478bd9Sstevel@tonic-gate */ 32057c478bd9Sstevel@tonic-gate ASSERT(zone->zone_cred_ref == 1); /* for zone_kcred */ 32067c478bd9Sstevel@tonic-gate ASSERT(zone->zone_kcred->cr_ref == 1); 32077c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ref == 0); 32087c478bd9Sstevel@tonic-gate zkcr = zone->zone_kcred; 32097c478bd9Sstevel@tonic-gate zone->zone_kcred = NULL; 32107c478bd9Sstevel@tonic-gate crfree(zkcr); /* triggers call to zone_free */ 32117c478bd9Sstevel@tonic-gate return (zone_create_error(error, error2, extended_error)); 32127c478bd9Sstevel@tonic-gate } 32137c478bd9Sstevel@tonic-gate 32147c478bd9Sstevel@tonic-gate /* 32157c478bd9Sstevel@tonic-gate * Cause the zone to boot. This is pretty simple, since we let zoneadmd do 32163f2f09c1Sdp * the heavy lifting. initname is the path to the program to launch 32173f2f09c1Sdp * at the "top" of the zone; if this is NULL, we use the system default, 32183f2f09c1Sdp * which is stored at zone_default_initname. 32197c478bd9Sstevel@tonic-gate */ 32207c478bd9Sstevel@tonic-gate static int 32213f2f09c1Sdp zone_boot(zoneid_t zoneid) 32227c478bd9Sstevel@tonic-gate { 32237c478bd9Sstevel@tonic-gate int err; 32247c478bd9Sstevel@tonic-gate zone_t *zone; 32257c478bd9Sstevel@tonic-gate 32267c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 32277c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 32287c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 32297c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 32307c478bd9Sstevel@tonic-gate 32317c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 32327c478bd9Sstevel@tonic-gate /* 32337c478bd9Sstevel@tonic-gate * Look for zone under hash lock to prevent races with calls to 32347c478bd9Sstevel@tonic-gate * zone_shutdown, zone_destroy, etc. 32357c478bd9Sstevel@tonic-gate */ 32367c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 32377c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32387c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 32397c478bd9Sstevel@tonic-gate } 32407c478bd9Sstevel@tonic-gate 32417c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 32427c478bd9Sstevel@tonic-gate if (zone_status_get(zone) != ZONE_IS_READY) { 32437c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 32447c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32457c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 32467c478bd9Sstevel@tonic-gate } 32477c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_BOOTING); 32487c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 32497c478bd9Sstevel@tonic-gate 32507c478bd9Sstevel@tonic-gate zone_hold(zone); /* so we can use the zone_t later */ 32517c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32527c478bd9Sstevel@tonic-gate 32537c478bd9Sstevel@tonic-gate if (zone_status_wait_sig(zone, ZONE_IS_RUNNING) == 0) { 32547c478bd9Sstevel@tonic-gate zone_rele(zone); 32557c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 32567c478bd9Sstevel@tonic-gate } 32577c478bd9Sstevel@tonic-gate 32587c478bd9Sstevel@tonic-gate /* 32597c478bd9Sstevel@tonic-gate * Boot (starting init) might have failed, in which case the zone 32607c478bd9Sstevel@tonic-gate * will go to the SHUTTING_DOWN state; an appropriate errno will 32617c478bd9Sstevel@tonic-gate * be placed in zone->zone_boot_err, and so we return that. 32627c478bd9Sstevel@tonic-gate */ 32637c478bd9Sstevel@tonic-gate err = zone->zone_boot_err; 32647c478bd9Sstevel@tonic-gate zone_rele(zone); 32657c478bd9Sstevel@tonic-gate return (err ? set_errno(err) : 0); 32667c478bd9Sstevel@tonic-gate } 32677c478bd9Sstevel@tonic-gate 32687c478bd9Sstevel@tonic-gate /* 32697c478bd9Sstevel@tonic-gate * Kills all user processes in the zone, waiting for them all to exit 32707c478bd9Sstevel@tonic-gate * before returning. 32717c478bd9Sstevel@tonic-gate */ 32727c478bd9Sstevel@tonic-gate static int 32737c478bd9Sstevel@tonic-gate zone_empty(zone_t *zone) 32747c478bd9Sstevel@tonic-gate { 32757c478bd9Sstevel@tonic-gate int waitstatus; 32767c478bd9Sstevel@tonic-gate 32777c478bd9Sstevel@tonic-gate /* 32787c478bd9Sstevel@tonic-gate * We need to drop zonehash_lock before killing all 32797c478bd9Sstevel@tonic-gate * processes, otherwise we'll deadlock with zone_find_* 32807c478bd9Sstevel@tonic-gate * which can be called from the exit path. 32817c478bd9Sstevel@tonic-gate */ 32827c478bd9Sstevel@tonic-gate ASSERT(MUTEX_NOT_HELD(&zonehash_lock)); 32837c478bd9Sstevel@tonic-gate while ((waitstatus = zone_status_timedwait_sig(zone, lbolt + hz, 32847c478bd9Sstevel@tonic-gate ZONE_IS_EMPTY)) == -1) { 32857c478bd9Sstevel@tonic-gate killall(zone->zone_id); 32867c478bd9Sstevel@tonic-gate } 32877c478bd9Sstevel@tonic-gate /* 32887c478bd9Sstevel@tonic-gate * return EINTR if we were signaled 32897c478bd9Sstevel@tonic-gate */ 32907c478bd9Sstevel@tonic-gate if (waitstatus == 0) 32917c478bd9Sstevel@tonic-gate return (EINTR); 32927c478bd9Sstevel@tonic-gate return (0); 32937c478bd9Sstevel@tonic-gate } 32947c478bd9Sstevel@tonic-gate 329545916cd2Sjpk /* 329645916cd2Sjpk * This function implements the policy for zone visibility. 329745916cd2Sjpk * 329845916cd2Sjpk * In standard Solaris, a non-global zone can only see itself. 329945916cd2Sjpk * 330045916cd2Sjpk * In Trusted Extensions, a labeled zone can lookup any zone whose label 330145916cd2Sjpk * it dominates. For this test, the label of the global zone is treated as 330245916cd2Sjpk * admin_high so it is special-cased instead of being checked for dominance. 330345916cd2Sjpk * 330445916cd2Sjpk * Returns true if zone attributes are viewable, false otherwise. 330545916cd2Sjpk */ 330645916cd2Sjpk static boolean_t 330745916cd2Sjpk zone_list_access(zone_t *zone) 330845916cd2Sjpk { 330945916cd2Sjpk 331045916cd2Sjpk if (curproc->p_zone == global_zone || 331145916cd2Sjpk curproc->p_zone == zone) { 331245916cd2Sjpk return (B_TRUE); 331348451833Scarlsonj } else if (is_system_labeled() && !(zone->zone_flags & ZF_IS_SCRATCH)) { 331445916cd2Sjpk bslabel_t *curproc_label; 331545916cd2Sjpk bslabel_t *zone_label; 331645916cd2Sjpk 331745916cd2Sjpk curproc_label = label2bslabel(curproc->p_zone->zone_slabel); 331845916cd2Sjpk zone_label = label2bslabel(zone->zone_slabel); 331945916cd2Sjpk 332045916cd2Sjpk if (zone->zone_id != GLOBAL_ZONEID && 332145916cd2Sjpk bldominates(curproc_label, zone_label)) { 332245916cd2Sjpk return (B_TRUE); 332345916cd2Sjpk } else { 332445916cd2Sjpk return (B_FALSE); 332545916cd2Sjpk } 332645916cd2Sjpk } else { 332745916cd2Sjpk return (B_FALSE); 332845916cd2Sjpk } 332945916cd2Sjpk } 333045916cd2Sjpk 33317c478bd9Sstevel@tonic-gate /* 33327c478bd9Sstevel@tonic-gate * Systemcall to start the zone's halt sequence. By the time this 33337c478bd9Sstevel@tonic-gate * function successfully returns, all user processes and kernel threads 33347c478bd9Sstevel@tonic-gate * executing in it will have exited, ZSD shutdown callbacks executed, 33357c478bd9Sstevel@tonic-gate * and the zone status set to ZONE_IS_DOWN. 33367c478bd9Sstevel@tonic-gate * 33377c478bd9Sstevel@tonic-gate * It is possible that the call will interrupt itself if the caller is the 33387c478bd9Sstevel@tonic-gate * parent of any process running in the zone, and doesn't have SIGCHLD blocked. 33397c478bd9Sstevel@tonic-gate */ 33407c478bd9Sstevel@tonic-gate static int 33417c478bd9Sstevel@tonic-gate zone_shutdown(zoneid_t zoneid) 33427c478bd9Sstevel@tonic-gate { 33437c478bd9Sstevel@tonic-gate int error; 33447c478bd9Sstevel@tonic-gate zone_t *zone; 33457c478bd9Sstevel@tonic-gate zone_status_t status; 33467c478bd9Sstevel@tonic-gate 33477c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 33487c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 33497c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 33507c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 33517c478bd9Sstevel@tonic-gate 33527c478bd9Sstevel@tonic-gate /* 33537c478bd9Sstevel@tonic-gate * Block mounts so that VFS_MOUNT() can get an accurate view of 33547c478bd9Sstevel@tonic-gate * the zone's status with regards to ZONE_IS_SHUTTING down. 33557c478bd9Sstevel@tonic-gate * 33567c478bd9Sstevel@tonic-gate * e.g. NFS can fail the mount if it determines that the zone 33577c478bd9Sstevel@tonic-gate * has already begun the shutdown sequence. 33587c478bd9Sstevel@tonic-gate */ 33597c478bd9Sstevel@tonic-gate if (block_mounts() == 0) 33607c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 33617c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 33627c478bd9Sstevel@tonic-gate /* 33637c478bd9Sstevel@tonic-gate * Look for zone under hash lock to prevent races with other 33647c478bd9Sstevel@tonic-gate * calls to zone_shutdown and zone_destroy. 33657c478bd9Sstevel@tonic-gate */ 33667c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 33677c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 33687c478bd9Sstevel@tonic-gate resume_mounts(); 33697c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 33707c478bd9Sstevel@tonic-gate } 33717c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 33727c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 33737c478bd9Sstevel@tonic-gate /* 33747c478bd9Sstevel@tonic-gate * Fail if the zone isn't fully initialized yet. 33757c478bd9Sstevel@tonic-gate */ 33767c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY) { 33777c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 33787c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 33797c478bd9Sstevel@tonic-gate resume_mounts(); 33807c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 33817c478bd9Sstevel@tonic-gate } 33827c478bd9Sstevel@tonic-gate /* 33837c478bd9Sstevel@tonic-gate * If conditions required for zone_shutdown() to return have been met, 33847c478bd9Sstevel@tonic-gate * return success. 33857c478bd9Sstevel@tonic-gate */ 33867c478bd9Sstevel@tonic-gate if (status >= ZONE_IS_DOWN) { 33877c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 33887c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 33897c478bd9Sstevel@tonic-gate resume_mounts(); 33907c478bd9Sstevel@tonic-gate return (0); 33917c478bd9Sstevel@tonic-gate } 33927c478bd9Sstevel@tonic-gate /* 33937c478bd9Sstevel@tonic-gate * If zone_shutdown() hasn't been called before, go through the motions. 33947c478bd9Sstevel@tonic-gate * If it has, there's nothing to do but wait for the kernel threads to 33957c478bd9Sstevel@tonic-gate * drain. 33967c478bd9Sstevel@tonic-gate */ 33977c478bd9Sstevel@tonic-gate if (status < ZONE_IS_EMPTY) { 33987c478bd9Sstevel@tonic-gate uint_t ntasks; 33997c478bd9Sstevel@tonic-gate 34007c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 34017c478bd9Sstevel@tonic-gate if ((ntasks = zone->zone_ntasks) != 1) { 34027c478bd9Sstevel@tonic-gate /* 34037c478bd9Sstevel@tonic-gate * There's still stuff running. 34047c478bd9Sstevel@tonic-gate */ 34057c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_SHUTTING_DOWN); 34067c478bd9Sstevel@tonic-gate } 34077c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 34087c478bd9Sstevel@tonic-gate if (ntasks == 1) { 34097c478bd9Sstevel@tonic-gate /* 34107c478bd9Sstevel@tonic-gate * The only way to create another task is through 34117c478bd9Sstevel@tonic-gate * zone_enter(), which will block until we drop 34127c478bd9Sstevel@tonic-gate * zonehash_lock. The zone is empty. 34137c478bd9Sstevel@tonic-gate */ 34147c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == NULL) { 34157c478bd9Sstevel@tonic-gate /* 34167c478bd9Sstevel@tonic-gate * Skip ahead to ZONE_IS_DOWN 34177c478bd9Sstevel@tonic-gate */ 34187c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DOWN); 34197c478bd9Sstevel@tonic-gate } else { 34207c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_EMPTY); 34217c478bd9Sstevel@tonic-gate } 34227c478bd9Sstevel@tonic-gate } 34237c478bd9Sstevel@tonic-gate } 34247c478bd9Sstevel@tonic-gate zone_hold(zone); /* so we can use the zone_t later */ 34257c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 34267c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 34277c478bd9Sstevel@tonic-gate resume_mounts(); 34287c478bd9Sstevel@tonic-gate 34297c478bd9Sstevel@tonic-gate if (error = zone_empty(zone)) { 34307c478bd9Sstevel@tonic-gate zone_rele(zone); 34317c478bd9Sstevel@tonic-gate return (set_errno(error)); 34327c478bd9Sstevel@tonic-gate } 34337c478bd9Sstevel@tonic-gate /* 34347c478bd9Sstevel@tonic-gate * After the zone status goes to ZONE_IS_DOWN this zone will no 34357c478bd9Sstevel@tonic-gate * longer be notified of changes to the pools configuration, so 34367c478bd9Sstevel@tonic-gate * in order to not end up with a stale pool pointer, we point 34377c478bd9Sstevel@tonic-gate * ourselves at the default pool and remove all resource 34387c478bd9Sstevel@tonic-gate * visibility. This is especially important as the zone_t may 34397c478bd9Sstevel@tonic-gate * languish on the deathrow for a very long time waiting for 34407c478bd9Sstevel@tonic-gate * cred's to drain out. 34417c478bd9Sstevel@tonic-gate * 34427c478bd9Sstevel@tonic-gate * This rebinding of the zone can happen multiple times 34437c478bd9Sstevel@tonic-gate * (presumably due to interrupted or parallel systemcalls) 34447c478bd9Sstevel@tonic-gate * without any adverse effects. 34457c478bd9Sstevel@tonic-gate */ 34467c478bd9Sstevel@tonic-gate if (pool_lock_intr() != 0) { 34477c478bd9Sstevel@tonic-gate zone_rele(zone); 34487c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 34497c478bd9Sstevel@tonic-gate } 34507c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED) { 34517c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 34527c478bd9Sstevel@tonic-gate zone_pool_set(zone, pool_default); 34537c478bd9Sstevel@tonic-gate /* 34547c478bd9Sstevel@tonic-gate * The zone no longer needs to be able to see any cpus. 34557c478bd9Sstevel@tonic-gate */ 34567c478bd9Sstevel@tonic-gate zone_pset_set(zone, ZONE_PS_INVAL); 34577c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 34587c478bd9Sstevel@tonic-gate } 34597c478bd9Sstevel@tonic-gate pool_unlock(); 34607c478bd9Sstevel@tonic-gate 34617c478bd9Sstevel@tonic-gate /* 34627c478bd9Sstevel@tonic-gate * ZSD shutdown callbacks can be executed multiple times, hence 34637c478bd9Sstevel@tonic-gate * it is safe to not be holding any locks across this call. 34647c478bd9Sstevel@tonic-gate */ 34657c478bd9Sstevel@tonic-gate zone_zsd_callbacks(zone, ZSD_SHUTDOWN); 34667c478bd9Sstevel@tonic-gate 34677c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 34687c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == NULL && zone_status_get(zone) < ZONE_IS_DOWN) 34697c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DOWN); 34707c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 34717c478bd9Sstevel@tonic-gate 34727c478bd9Sstevel@tonic-gate /* 34737c478bd9Sstevel@tonic-gate * Wait for kernel threads to drain. 34747c478bd9Sstevel@tonic-gate */ 34757c478bd9Sstevel@tonic-gate if (!zone_status_wait_sig(zone, ZONE_IS_DOWN)) { 34767c478bd9Sstevel@tonic-gate zone_rele(zone); 34777c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 34787c478bd9Sstevel@tonic-gate } 3479*9acbbeafSnn 3480*9acbbeafSnn brand_unregister_zone(zone->zone_brand); 3481*9acbbeafSnn 34827c478bd9Sstevel@tonic-gate zone_rele(zone); 34837c478bd9Sstevel@tonic-gate return (0); 34847c478bd9Sstevel@tonic-gate } 34857c478bd9Sstevel@tonic-gate 34867c478bd9Sstevel@tonic-gate /* 34877c478bd9Sstevel@tonic-gate * Systemcall entry point to finalize the zone halt process. The caller 3488824c205fSml * must have already successfully called zone_shutdown(). 34897c478bd9Sstevel@tonic-gate * 34907c478bd9Sstevel@tonic-gate * Upon successful completion, the zone will have been fully destroyed: 34917c478bd9Sstevel@tonic-gate * zsched will have exited, destructor callbacks executed, and the zone 34927c478bd9Sstevel@tonic-gate * removed from the list of active zones. 34937c478bd9Sstevel@tonic-gate */ 34947c478bd9Sstevel@tonic-gate static int 34957c478bd9Sstevel@tonic-gate zone_destroy(zoneid_t zoneid) 34967c478bd9Sstevel@tonic-gate { 34977c478bd9Sstevel@tonic-gate uint64_t uniqid; 34987c478bd9Sstevel@tonic-gate zone_t *zone; 34997c478bd9Sstevel@tonic-gate zone_status_t status; 35007c478bd9Sstevel@tonic-gate 35017c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 35027c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 35037c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 35047c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 35057c478bd9Sstevel@tonic-gate 35067c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 35077c478bd9Sstevel@tonic-gate /* 35087c478bd9Sstevel@tonic-gate * Look for zone under hash lock to prevent races with other 35097c478bd9Sstevel@tonic-gate * calls to zone_destroy. 35107c478bd9Sstevel@tonic-gate */ 35117c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 35127c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35137c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 35147c478bd9Sstevel@tonic-gate } 35157c478bd9Sstevel@tonic-gate 35167c478bd9Sstevel@tonic-gate if (zone_mount_count(zone->zone_rootpath) != 0) { 35177c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35187c478bd9Sstevel@tonic-gate return (set_errno(EBUSY)); 35197c478bd9Sstevel@tonic-gate } 35207c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 35217c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 35227c478bd9Sstevel@tonic-gate if (status < ZONE_IS_DOWN) { 35237c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 35247c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35257c478bd9Sstevel@tonic-gate return (set_errno(EBUSY)); 35267c478bd9Sstevel@tonic-gate } else if (status == ZONE_IS_DOWN) { 35277c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DYING); /* Tell zsched to exit */ 35287c478bd9Sstevel@tonic-gate } 35297c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 35307c478bd9Sstevel@tonic-gate zone_hold(zone); 35317c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35327c478bd9Sstevel@tonic-gate 35337c478bd9Sstevel@tonic-gate /* 35347c478bd9Sstevel@tonic-gate * wait for zsched to exit 35357c478bd9Sstevel@tonic-gate */ 35367c478bd9Sstevel@tonic-gate zone_status_wait(zone, ZONE_IS_DEAD); 35377c478bd9Sstevel@tonic-gate zone_zsd_callbacks(zone, ZSD_DESTROY); 35387c478bd9Sstevel@tonic-gate uniqid = zone->zone_uniqid; 35397c478bd9Sstevel@tonic-gate zone_rele(zone); 35407c478bd9Sstevel@tonic-gate zone = NULL; /* potentially free'd */ 35417c478bd9Sstevel@tonic-gate 35427c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 35437c478bd9Sstevel@tonic-gate for (; /* ever */; ) { 35447c478bd9Sstevel@tonic-gate boolean_t unref; 35457c478bd9Sstevel@tonic-gate 35467c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL || 35477c478bd9Sstevel@tonic-gate zone->zone_uniqid != uniqid) { 35487c478bd9Sstevel@tonic-gate /* 35497c478bd9Sstevel@tonic-gate * The zone has gone away. Necessary conditions 35507c478bd9Sstevel@tonic-gate * are met, so we return success. 35517c478bd9Sstevel@tonic-gate */ 35527c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35537c478bd9Sstevel@tonic-gate return (0); 35547c478bd9Sstevel@tonic-gate } 35557c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 35567c478bd9Sstevel@tonic-gate unref = ZONE_IS_UNREF(zone); 35577c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 35587c478bd9Sstevel@tonic-gate if (unref) { 35597c478bd9Sstevel@tonic-gate /* 35607c478bd9Sstevel@tonic-gate * There is only one reference to the zone -- that 35617c478bd9Sstevel@tonic-gate * added when the zone was added to the hashtables -- 35627c478bd9Sstevel@tonic-gate * and things will remain this way until we drop 35637c478bd9Sstevel@tonic-gate * zonehash_lock... we can go ahead and cleanup the 35647c478bd9Sstevel@tonic-gate * zone. 35657c478bd9Sstevel@tonic-gate */ 35667c478bd9Sstevel@tonic-gate break; 35677c478bd9Sstevel@tonic-gate } 35687c478bd9Sstevel@tonic-gate 35697c478bd9Sstevel@tonic-gate if (cv_wait_sig(&zone_destroy_cv, &zonehash_lock) == 0) { 35707c478bd9Sstevel@tonic-gate /* Signaled */ 35717c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35727c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 35737c478bd9Sstevel@tonic-gate } 35747c478bd9Sstevel@tonic-gate 35757c478bd9Sstevel@tonic-gate } 35767c478bd9Sstevel@tonic-gate 35777c478bd9Sstevel@tonic-gate /* 35787c478bd9Sstevel@tonic-gate * It is now safe to let the zone be recreated; remove it from the 35797c478bd9Sstevel@tonic-gate * lists. The memory will not be freed until the last cred 35807c478bd9Sstevel@tonic-gate * reference goes away. 35817c478bd9Sstevel@tonic-gate */ 35827c478bd9Sstevel@tonic-gate ASSERT(zonecount > 1); /* must be > 1; can't destroy global zone */ 35837c478bd9Sstevel@tonic-gate zonecount--; 35847c478bd9Sstevel@tonic-gate /* remove from active list and hash tables */ 35857c478bd9Sstevel@tonic-gate list_remove(&zone_active, zone); 35867c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyname, 35877c478bd9Sstevel@tonic-gate (mod_hash_key_t)zone->zone_name); 35887c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyid, 35897c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_id); 359048451833Scarlsonj if (zone->zone_flags & ZF_HASHED_LABEL) 359145916cd2Sjpk (void) mod_hash_destroy(zonehashbylabel, 359245916cd2Sjpk (mod_hash_key_t)zone->zone_slabel); 35937c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35947c478bd9Sstevel@tonic-gate 3595108322fbScarlsonj /* 3596108322fbScarlsonj * Release the root vnode; we're not using it anymore. Nor should any 3597108322fbScarlsonj * other thread that might access it exist. 3598108322fbScarlsonj */ 3599108322fbScarlsonj if (zone->zone_rootvp != NULL) { 3600108322fbScarlsonj VN_RELE(zone->zone_rootvp); 3601108322fbScarlsonj zone->zone_rootvp = NULL; 3602108322fbScarlsonj } 3603108322fbScarlsonj 36047c478bd9Sstevel@tonic-gate /* add to deathrow list */ 36057c478bd9Sstevel@tonic-gate mutex_enter(&zone_deathrow_lock); 36067c478bd9Sstevel@tonic-gate list_insert_tail(&zone_deathrow, zone); 36077c478bd9Sstevel@tonic-gate mutex_exit(&zone_deathrow_lock); 36087c478bd9Sstevel@tonic-gate 36097c478bd9Sstevel@tonic-gate /* 36107c478bd9Sstevel@tonic-gate * Drop last reference (which was added by zsched()), this will 36117c478bd9Sstevel@tonic-gate * free the zone unless there are outstanding cred references. 36127c478bd9Sstevel@tonic-gate */ 36137c478bd9Sstevel@tonic-gate zone_rele(zone); 36147c478bd9Sstevel@tonic-gate return (0); 36157c478bd9Sstevel@tonic-gate } 36167c478bd9Sstevel@tonic-gate 36177c478bd9Sstevel@tonic-gate /* 36187c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_getattr(2). 36197c478bd9Sstevel@tonic-gate */ 36207c478bd9Sstevel@tonic-gate static ssize_t 36217c478bd9Sstevel@tonic-gate zone_getattr(zoneid_t zoneid, int attr, void *buf, size_t bufsize) 36227c478bd9Sstevel@tonic-gate { 36237c478bd9Sstevel@tonic-gate size_t size; 36247c478bd9Sstevel@tonic-gate int error = 0, err; 36257c478bd9Sstevel@tonic-gate zone_t *zone; 36267c478bd9Sstevel@tonic-gate char *zonepath; 36273f2f09c1Sdp char *outstr; 36287c478bd9Sstevel@tonic-gate zone_status_t zone_status; 36297c478bd9Sstevel@tonic-gate pid_t initpid; 36307c478bd9Sstevel@tonic-gate boolean_t global = (curproc->p_zone == global_zone); 363145916cd2Sjpk boolean_t curzone = (curproc->p_zone->zone_id == zoneid); 36327c478bd9Sstevel@tonic-gate 36337c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 36347c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 36357c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 36367c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 36377c478bd9Sstevel@tonic-gate } 36387c478bd9Sstevel@tonic-gate zone_status = zone_status_get(zone); 36397c478bd9Sstevel@tonic-gate if (zone_status < ZONE_IS_READY) { 36407c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 36417c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 36427c478bd9Sstevel@tonic-gate } 36437c478bd9Sstevel@tonic-gate zone_hold(zone); 36447c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 36457c478bd9Sstevel@tonic-gate 36467c478bd9Sstevel@tonic-gate /* 364745916cd2Sjpk * If not in the global zone, don't show information about other zones, 364845916cd2Sjpk * unless the system is labeled and the local zone's label dominates 364945916cd2Sjpk * the other zone. 36507c478bd9Sstevel@tonic-gate */ 365145916cd2Sjpk if (!zone_list_access(zone)) { 36527c478bd9Sstevel@tonic-gate zone_rele(zone); 36537c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 36547c478bd9Sstevel@tonic-gate } 36557c478bd9Sstevel@tonic-gate 36567c478bd9Sstevel@tonic-gate switch (attr) { 36577c478bd9Sstevel@tonic-gate case ZONE_ATTR_ROOT: 36587c478bd9Sstevel@tonic-gate if (global) { 36597c478bd9Sstevel@tonic-gate /* 36607c478bd9Sstevel@tonic-gate * Copy the path to trim the trailing "/" (except for 36617c478bd9Sstevel@tonic-gate * the global zone). 36627c478bd9Sstevel@tonic-gate */ 36637c478bd9Sstevel@tonic-gate if (zone != global_zone) 36647c478bd9Sstevel@tonic-gate size = zone->zone_rootpathlen - 1; 36657c478bd9Sstevel@tonic-gate else 36667c478bd9Sstevel@tonic-gate size = zone->zone_rootpathlen; 36677c478bd9Sstevel@tonic-gate zonepath = kmem_alloc(size, KM_SLEEP); 36687c478bd9Sstevel@tonic-gate bcopy(zone->zone_rootpath, zonepath, size); 36697c478bd9Sstevel@tonic-gate zonepath[size - 1] = '\0'; 36707c478bd9Sstevel@tonic-gate } else { 367145916cd2Sjpk if (curzone || !is_system_labeled()) { 367245916cd2Sjpk /* 367345916cd2Sjpk * Caller is not in the global zone. 367445916cd2Sjpk * if the query is on the current zone 367545916cd2Sjpk * or the system is not labeled, 367645916cd2Sjpk * just return faked-up path for current zone. 367745916cd2Sjpk */ 367845916cd2Sjpk zonepath = "/"; 367945916cd2Sjpk size = 2; 368045916cd2Sjpk } else { 368145916cd2Sjpk /* 368245916cd2Sjpk * Return related path for current zone. 368345916cd2Sjpk */ 368445916cd2Sjpk int prefix_len = strlen(zone_prefix); 368545916cd2Sjpk int zname_len = strlen(zone->zone_name); 368645916cd2Sjpk 368745916cd2Sjpk size = prefix_len + zname_len + 1; 368845916cd2Sjpk zonepath = kmem_alloc(size, KM_SLEEP); 368945916cd2Sjpk bcopy(zone_prefix, zonepath, prefix_len); 369045916cd2Sjpk bcopy(zone->zone_name, zonepath + 36913f2f09c1Sdp prefix_len, zname_len); 369245916cd2Sjpk zonepath[size - 1] = '\0'; 369345916cd2Sjpk } 36947c478bd9Sstevel@tonic-gate } 36957c478bd9Sstevel@tonic-gate if (bufsize > size) 36967c478bd9Sstevel@tonic-gate bufsize = size; 36977c478bd9Sstevel@tonic-gate if (buf != NULL) { 36987c478bd9Sstevel@tonic-gate err = copyoutstr(zonepath, buf, bufsize, NULL); 36997c478bd9Sstevel@tonic-gate if (err != 0 && err != ENAMETOOLONG) 37007c478bd9Sstevel@tonic-gate error = EFAULT; 37017c478bd9Sstevel@tonic-gate } 370245916cd2Sjpk if (global || (is_system_labeled() && !curzone)) 37037c478bd9Sstevel@tonic-gate kmem_free(zonepath, size); 37047c478bd9Sstevel@tonic-gate break; 37057c478bd9Sstevel@tonic-gate 37067c478bd9Sstevel@tonic-gate case ZONE_ATTR_NAME: 37077c478bd9Sstevel@tonic-gate size = strlen(zone->zone_name) + 1; 37087c478bd9Sstevel@tonic-gate if (bufsize > size) 37097c478bd9Sstevel@tonic-gate bufsize = size; 37107c478bd9Sstevel@tonic-gate if (buf != NULL) { 37117c478bd9Sstevel@tonic-gate err = copyoutstr(zone->zone_name, buf, bufsize, NULL); 37127c478bd9Sstevel@tonic-gate if (err != 0 && err != ENAMETOOLONG) 37137c478bd9Sstevel@tonic-gate error = EFAULT; 37147c478bd9Sstevel@tonic-gate } 37157c478bd9Sstevel@tonic-gate break; 37167c478bd9Sstevel@tonic-gate 37177c478bd9Sstevel@tonic-gate case ZONE_ATTR_STATUS: 37187c478bd9Sstevel@tonic-gate /* 37197c478bd9Sstevel@tonic-gate * Since we're not holding zonehash_lock, the zone status 37207c478bd9Sstevel@tonic-gate * may be anything; leave it up to userland to sort it out. 37217c478bd9Sstevel@tonic-gate */ 37227c478bd9Sstevel@tonic-gate size = sizeof (zone_status); 37237c478bd9Sstevel@tonic-gate if (bufsize > size) 37247c478bd9Sstevel@tonic-gate bufsize = size; 37257c478bd9Sstevel@tonic-gate zone_status = zone_status_get(zone); 37267c478bd9Sstevel@tonic-gate if (buf != NULL && 37277c478bd9Sstevel@tonic-gate copyout(&zone_status, buf, bufsize) != 0) 37287c478bd9Sstevel@tonic-gate error = EFAULT; 37297c478bd9Sstevel@tonic-gate break; 37307c478bd9Sstevel@tonic-gate case ZONE_ATTR_PRIVSET: 37317c478bd9Sstevel@tonic-gate size = sizeof (priv_set_t); 37327c478bd9Sstevel@tonic-gate if (bufsize > size) 37337c478bd9Sstevel@tonic-gate bufsize = size; 37347c478bd9Sstevel@tonic-gate if (buf != NULL && 37357c478bd9Sstevel@tonic-gate copyout(zone->zone_privset, buf, bufsize) != 0) 37367c478bd9Sstevel@tonic-gate error = EFAULT; 37377c478bd9Sstevel@tonic-gate break; 37387c478bd9Sstevel@tonic-gate case ZONE_ATTR_UNIQID: 37397c478bd9Sstevel@tonic-gate size = sizeof (zone->zone_uniqid); 37407c478bd9Sstevel@tonic-gate if (bufsize > size) 37417c478bd9Sstevel@tonic-gate bufsize = size; 37427c478bd9Sstevel@tonic-gate if (buf != NULL && 37437c478bd9Sstevel@tonic-gate copyout(&zone->zone_uniqid, buf, bufsize) != 0) 37447c478bd9Sstevel@tonic-gate error = EFAULT; 37457c478bd9Sstevel@tonic-gate break; 37467c478bd9Sstevel@tonic-gate case ZONE_ATTR_POOLID: 37477c478bd9Sstevel@tonic-gate { 37487c478bd9Sstevel@tonic-gate pool_t *pool; 37497c478bd9Sstevel@tonic-gate poolid_t poolid; 37507c478bd9Sstevel@tonic-gate 37517c478bd9Sstevel@tonic-gate if (pool_lock_intr() != 0) { 37527c478bd9Sstevel@tonic-gate error = EINTR; 37537c478bd9Sstevel@tonic-gate break; 37547c478bd9Sstevel@tonic-gate } 37557c478bd9Sstevel@tonic-gate pool = zone_pool_get(zone); 37567c478bd9Sstevel@tonic-gate poolid = pool->pool_id; 37577c478bd9Sstevel@tonic-gate pool_unlock(); 37587c478bd9Sstevel@tonic-gate size = sizeof (poolid); 37597c478bd9Sstevel@tonic-gate if (bufsize > size) 37607c478bd9Sstevel@tonic-gate bufsize = size; 37617c478bd9Sstevel@tonic-gate if (buf != NULL && copyout(&poolid, buf, size) != 0) 37627c478bd9Sstevel@tonic-gate error = EFAULT; 37637c478bd9Sstevel@tonic-gate } 37647c478bd9Sstevel@tonic-gate break; 376545916cd2Sjpk case ZONE_ATTR_SLBL: 376645916cd2Sjpk size = sizeof (bslabel_t); 376745916cd2Sjpk if (bufsize > size) 376845916cd2Sjpk bufsize = size; 376945916cd2Sjpk if (zone->zone_slabel == NULL) 377045916cd2Sjpk error = EINVAL; 377145916cd2Sjpk else if (buf != NULL && 377245916cd2Sjpk copyout(label2bslabel(zone->zone_slabel), buf, 377345916cd2Sjpk bufsize) != 0) 377445916cd2Sjpk error = EFAULT; 377545916cd2Sjpk break; 37767c478bd9Sstevel@tonic-gate case ZONE_ATTR_INITPID: 37777c478bd9Sstevel@tonic-gate size = sizeof (initpid); 37787c478bd9Sstevel@tonic-gate if (bufsize > size) 37797c478bd9Sstevel@tonic-gate bufsize = size; 37807c478bd9Sstevel@tonic-gate initpid = zone->zone_proc_initpid; 37817c478bd9Sstevel@tonic-gate if (initpid == -1) { 37827c478bd9Sstevel@tonic-gate error = ESRCH; 37837c478bd9Sstevel@tonic-gate break; 37847c478bd9Sstevel@tonic-gate } 37857c478bd9Sstevel@tonic-gate if (buf != NULL && 37867c478bd9Sstevel@tonic-gate copyout(&initpid, buf, bufsize) != 0) 37877c478bd9Sstevel@tonic-gate error = EFAULT; 37887c478bd9Sstevel@tonic-gate break; 3789*9acbbeafSnn case ZONE_ATTR_BRAND: 3790*9acbbeafSnn size = strlen(zone->zone_brand->b_name) + 1; 3791*9acbbeafSnn 3792*9acbbeafSnn if (bufsize > size) 3793*9acbbeafSnn bufsize = size; 3794*9acbbeafSnn if (buf != NULL) { 3795*9acbbeafSnn err = copyoutstr(zone->zone_brand->b_name, buf, 3796*9acbbeafSnn bufsize, NULL); 3797*9acbbeafSnn if (err != 0 && err != ENAMETOOLONG) 3798*9acbbeafSnn error = EFAULT; 3799*9acbbeafSnn } 3800*9acbbeafSnn break; 38013f2f09c1Sdp case ZONE_ATTR_INITNAME: 38023f2f09c1Sdp size = strlen(zone->zone_initname) + 1; 38033f2f09c1Sdp if (bufsize > size) 38043f2f09c1Sdp bufsize = size; 38053f2f09c1Sdp if (buf != NULL) { 38063f2f09c1Sdp err = copyoutstr(zone->zone_initname, buf, bufsize, 38073f2f09c1Sdp NULL); 38083f2f09c1Sdp if (err != 0 && err != ENAMETOOLONG) 38093f2f09c1Sdp error = EFAULT; 38103f2f09c1Sdp } 38113f2f09c1Sdp break; 38123f2f09c1Sdp case ZONE_ATTR_BOOTARGS: 38133f2f09c1Sdp if (zone->zone_bootargs == NULL) 38143f2f09c1Sdp outstr = ""; 38153f2f09c1Sdp else 38163f2f09c1Sdp outstr = zone->zone_bootargs; 38173f2f09c1Sdp size = strlen(outstr) + 1; 38183f2f09c1Sdp if (bufsize > size) 38193f2f09c1Sdp bufsize = size; 38203f2f09c1Sdp if (buf != NULL) { 38213f2f09c1Sdp err = copyoutstr(outstr, buf, bufsize, NULL); 38223f2f09c1Sdp if (err != 0 && err != ENAMETOOLONG) 38233f2f09c1Sdp error = EFAULT; 38243f2f09c1Sdp } 38253f2f09c1Sdp break; 38267c478bd9Sstevel@tonic-gate default: 3827*9acbbeafSnn if ((attr >= ZONE_ATTR_BRAND_ATTRS) && ZONE_IS_BRANDED(zone)) { 3828*9acbbeafSnn size = bufsize; 3829*9acbbeafSnn error = ZBROP(zone)->b_getattr(zone, attr, buf, &size); 3830*9acbbeafSnn } else { 3831*9acbbeafSnn error = EINVAL; 3832*9acbbeafSnn } 38337c478bd9Sstevel@tonic-gate } 38347c478bd9Sstevel@tonic-gate zone_rele(zone); 38357c478bd9Sstevel@tonic-gate 38367c478bd9Sstevel@tonic-gate if (error) 38377c478bd9Sstevel@tonic-gate return (set_errno(error)); 38387c478bd9Sstevel@tonic-gate return ((ssize_t)size); 38397c478bd9Sstevel@tonic-gate } 38407c478bd9Sstevel@tonic-gate 38413f2f09c1Sdp /* 38423f2f09c1Sdp * Systemcall entry point for zone_setattr(2). 38433f2f09c1Sdp */ 38443f2f09c1Sdp /*ARGSUSED*/ 38453f2f09c1Sdp static int 38463f2f09c1Sdp zone_setattr(zoneid_t zoneid, int attr, void *buf, size_t bufsize) 38473f2f09c1Sdp { 38483f2f09c1Sdp zone_t *zone; 38493f2f09c1Sdp zone_status_t zone_status; 3850*9acbbeafSnn struct brand_attr *attrp; 38513f2f09c1Sdp int err; 38523f2f09c1Sdp 38533f2f09c1Sdp if (secpolicy_zone_config(CRED()) != 0) 38543f2f09c1Sdp return (set_errno(EPERM)); 38553f2f09c1Sdp 38563f2f09c1Sdp /* 38573f2f09c1Sdp * At present, attributes can only be set on non-running, 38583f2f09c1Sdp * non-global zones. 38593f2f09c1Sdp */ 38603f2f09c1Sdp if (zoneid == GLOBAL_ZONEID) { 38613f2f09c1Sdp return (set_errno(EINVAL)); 38623f2f09c1Sdp } 38633f2f09c1Sdp 38643f2f09c1Sdp mutex_enter(&zonehash_lock); 38653f2f09c1Sdp if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 38663f2f09c1Sdp mutex_exit(&zonehash_lock); 38673f2f09c1Sdp return (set_errno(EINVAL)); 38683f2f09c1Sdp } 38693f2f09c1Sdp zone_hold(zone); 38703f2f09c1Sdp mutex_exit(&zonehash_lock); 38713f2f09c1Sdp 38723f2f09c1Sdp zone_status = zone_status_get(zone); 38733f2f09c1Sdp if (zone_status > ZONE_IS_READY) 38743f2f09c1Sdp goto done; 38753f2f09c1Sdp 38763f2f09c1Sdp switch (attr) { 38773f2f09c1Sdp case ZONE_ATTR_INITNAME: 38783f2f09c1Sdp err = zone_set_initname(zone, (const char *)buf); 38793f2f09c1Sdp break; 38803f2f09c1Sdp case ZONE_ATTR_BOOTARGS: 38813f2f09c1Sdp err = zone_set_bootargs(zone, (const char *)buf); 38823f2f09c1Sdp break; 3883*9acbbeafSnn case ZONE_ATTR_BRAND: 3884*9acbbeafSnn ASSERT(!ZONE_IS_BRANDED(zone)); 3885*9acbbeafSnn err = 0; 3886*9acbbeafSnn attrp = kmem_alloc(sizeof (struct brand_attr), KM_SLEEP); 3887*9acbbeafSnn if ((buf == NULL) || 3888*9acbbeafSnn (copyin(buf, attrp, sizeof (struct brand_attr)) != 0)) { 3889*9acbbeafSnn kmem_free(attrp, sizeof (struct brand_attr)); 3890*9acbbeafSnn err = EFAULT; 3891*9acbbeafSnn break; 3892*9acbbeafSnn } 3893*9acbbeafSnn 3894*9acbbeafSnn if (is_system_labeled() && strncmp(attrp->ba_brandname, 3895*9acbbeafSnn NATIVE_BRAND_NAME, MAXNAMELEN) != 0) { 3896*9acbbeafSnn err = EPERM; 3897*9acbbeafSnn break; 3898*9acbbeafSnn } 3899*9acbbeafSnn 3900*9acbbeafSnn zone->zone_brand = brand_register_zone(attrp); 3901*9acbbeafSnn kmem_free(attrp, sizeof (struct brand_attr)); 3902*9acbbeafSnn if (zone->zone_brand == NULL) 3903*9acbbeafSnn err = EINVAL; 3904*9acbbeafSnn break; 39053f2f09c1Sdp default: 3906*9acbbeafSnn if ((attr >= ZONE_ATTR_BRAND_ATTRS) && ZONE_IS_BRANDED(zone)) 3907*9acbbeafSnn err = ZBROP(zone)->b_setattr(zone, attr, buf, bufsize); 3908*9acbbeafSnn else 3909*9acbbeafSnn err = EINVAL; 39103f2f09c1Sdp } 39113f2f09c1Sdp 39123f2f09c1Sdp done: 39133f2f09c1Sdp zone_rele(zone); 39143f2f09c1Sdp return (err != 0 ? set_errno(err) : 0); 39153f2f09c1Sdp } 39163f2f09c1Sdp 39177c478bd9Sstevel@tonic-gate /* 39187c478bd9Sstevel@tonic-gate * Return zero if the process has at least one vnode mapped in to its 39197c478bd9Sstevel@tonic-gate * address space which shouldn't be allowed to change zones. 39207c478bd9Sstevel@tonic-gate */ 39217c478bd9Sstevel@tonic-gate static int 39227c478bd9Sstevel@tonic-gate as_can_change_zones(void) 39237c478bd9Sstevel@tonic-gate { 39247c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 39257c478bd9Sstevel@tonic-gate struct seg *seg; 39267c478bd9Sstevel@tonic-gate struct as *as = pp->p_as; 39277c478bd9Sstevel@tonic-gate vnode_t *vp; 39287c478bd9Sstevel@tonic-gate int allow = 1; 39297c478bd9Sstevel@tonic-gate 39307c478bd9Sstevel@tonic-gate ASSERT(pp->p_as != &kas); 39317c478bd9Sstevel@tonic-gate AS_LOCK_ENTER(&as, &as->a_lock, RW_READER); 39327c478bd9Sstevel@tonic-gate for (seg = AS_SEGFIRST(as); seg != NULL; seg = AS_SEGNEXT(as, seg)) { 39337c478bd9Sstevel@tonic-gate /* 39347c478bd9Sstevel@tonic-gate * if we can't get a backing vnode for this segment then skip 39357c478bd9Sstevel@tonic-gate * it. 39367c478bd9Sstevel@tonic-gate */ 39377c478bd9Sstevel@tonic-gate vp = NULL; 39387c478bd9Sstevel@tonic-gate if (SEGOP_GETVP(seg, seg->s_base, &vp) != 0 || vp == NULL) 39397c478bd9Sstevel@tonic-gate continue; 39407c478bd9Sstevel@tonic-gate if (!vn_can_change_zones(vp)) { /* bail on first match */ 39417c478bd9Sstevel@tonic-gate allow = 0; 39427c478bd9Sstevel@tonic-gate break; 39437c478bd9Sstevel@tonic-gate } 39447c478bd9Sstevel@tonic-gate } 39457c478bd9Sstevel@tonic-gate AS_LOCK_EXIT(&as, &as->a_lock); 39467c478bd9Sstevel@tonic-gate return (allow); 39477c478bd9Sstevel@tonic-gate } 39487c478bd9Sstevel@tonic-gate 39497c478bd9Sstevel@tonic-gate /* 39507c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_enter(). 39517c478bd9Sstevel@tonic-gate * 39527c478bd9Sstevel@tonic-gate * The current process is injected into said zone. In the process 39537c478bd9Sstevel@tonic-gate * it will change its project membership, privileges, rootdir/cwd, 39547c478bd9Sstevel@tonic-gate * zone-wide rctls, and pool association to match those of the zone. 39557c478bd9Sstevel@tonic-gate * 39567c478bd9Sstevel@tonic-gate * The first zone_enter() called while the zone is in the ZONE_IS_READY 39577c478bd9Sstevel@tonic-gate * state will transition it to ZONE_IS_RUNNING. Processes may only 39587c478bd9Sstevel@tonic-gate * enter a zone that is "ready" or "running". 39597c478bd9Sstevel@tonic-gate */ 39607c478bd9Sstevel@tonic-gate static int 39617c478bd9Sstevel@tonic-gate zone_enter(zoneid_t zoneid) 39627c478bd9Sstevel@tonic-gate { 39637c478bd9Sstevel@tonic-gate zone_t *zone; 39647c478bd9Sstevel@tonic-gate vnode_t *vp; 39657c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 39667c478bd9Sstevel@tonic-gate contract_t *ct; 39677c478bd9Sstevel@tonic-gate cont_process_t *ctp; 39687c478bd9Sstevel@tonic-gate task_t *tk, *oldtk; 39697c478bd9Sstevel@tonic-gate kproject_t *zone_proj0; 39707c478bd9Sstevel@tonic-gate cred_t *cr, *newcr; 39717c478bd9Sstevel@tonic-gate pool_t *oldpool, *newpool; 39727c478bd9Sstevel@tonic-gate sess_t *sp; 39737c478bd9Sstevel@tonic-gate uid_t uid; 39747c478bd9Sstevel@tonic-gate zone_status_t status; 39757c478bd9Sstevel@tonic-gate int err = 0; 39767c478bd9Sstevel@tonic-gate rctl_entity_p_t e; 39777c478bd9Sstevel@tonic-gate 39787c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 39797c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 39807c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 39817c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 39827c478bd9Sstevel@tonic-gate 39837c478bd9Sstevel@tonic-gate /* 39847c478bd9Sstevel@tonic-gate * Stop all lwps so we don't need to hold a lock to look at 39857c478bd9Sstevel@tonic-gate * curproc->p_zone. This needs to happen before we grab any 39867c478bd9Sstevel@tonic-gate * locks to avoid deadlock (another lwp in the process could 39877c478bd9Sstevel@tonic-gate * be waiting for the held lock). 39887c478bd9Sstevel@tonic-gate */ 39897c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp && !holdlwps(SHOLDFORK)) 39907c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 39917c478bd9Sstevel@tonic-gate 39927c478bd9Sstevel@tonic-gate /* 39937c478bd9Sstevel@tonic-gate * Make sure we're not changing zones with files open or mapped in 39947c478bd9Sstevel@tonic-gate * to our address space which shouldn't be changing zones. 39957c478bd9Sstevel@tonic-gate */ 39967c478bd9Sstevel@tonic-gate if (!files_can_change_zones()) { 39977c478bd9Sstevel@tonic-gate err = EBADF; 39987c478bd9Sstevel@tonic-gate goto out; 39997c478bd9Sstevel@tonic-gate } 40007c478bd9Sstevel@tonic-gate if (!as_can_change_zones()) { 40017c478bd9Sstevel@tonic-gate err = EFAULT; 40027c478bd9Sstevel@tonic-gate goto out; 40037c478bd9Sstevel@tonic-gate } 40047c478bd9Sstevel@tonic-gate 40057c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 40067c478bd9Sstevel@tonic-gate if (pp->p_zone != global_zone) { 40077c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40087c478bd9Sstevel@tonic-gate err = EINVAL; 40097c478bd9Sstevel@tonic-gate goto out; 40107c478bd9Sstevel@tonic-gate } 40117c478bd9Sstevel@tonic-gate 40127c478bd9Sstevel@tonic-gate zone = zone_find_all_by_id(zoneid); 40137c478bd9Sstevel@tonic-gate if (zone == NULL) { 40147c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40157c478bd9Sstevel@tonic-gate err = EINVAL; 40167c478bd9Sstevel@tonic-gate goto out; 40177c478bd9Sstevel@tonic-gate } 40187c478bd9Sstevel@tonic-gate 40197c478bd9Sstevel@tonic-gate /* 40207c478bd9Sstevel@tonic-gate * To prevent processes in a zone from holding contracts on 40217c478bd9Sstevel@tonic-gate * extrazonal resources, and to avoid process contract 40227c478bd9Sstevel@tonic-gate * memberships which span zones, contract holders and processes 40237c478bd9Sstevel@tonic-gate * which aren't the sole members of their encapsulating process 40247c478bd9Sstevel@tonic-gate * contracts are not allowed to zone_enter. 40257c478bd9Sstevel@tonic-gate */ 40267c478bd9Sstevel@tonic-gate ctp = pp->p_ct_process; 40277c478bd9Sstevel@tonic-gate ct = &ctp->conp_contract; 40287c478bd9Sstevel@tonic-gate mutex_enter(&ct->ct_lock); 40297c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 40307c478bd9Sstevel@tonic-gate if ((avl_numnodes(&pp->p_ct_held) != 0) || (ctp->conp_nmembers != 1)) { 40317c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 40327c478bd9Sstevel@tonic-gate mutex_exit(&ct->ct_lock); 40337c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40347c478bd9Sstevel@tonic-gate pool_unlock(); 40357c478bd9Sstevel@tonic-gate err = EINVAL; 40367c478bd9Sstevel@tonic-gate goto out; 40377c478bd9Sstevel@tonic-gate } 40387c478bd9Sstevel@tonic-gate 40397c478bd9Sstevel@tonic-gate /* 40407c478bd9Sstevel@tonic-gate * Moreover, we don't allow processes whose encapsulating 40417c478bd9Sstevel@tonic-gate * process contracts have inherited extrazonal contracts. 40427c478bd9Sstevel@tonic-gate * While it would be easier to eliminate all process contracts 40437c478bd9Sstevel@tonic-gate * with inherited contracts, we need to be able to give a 40447c478bd9Sstevel@tonic-gate * restarted init (or other zone-penetrating process) its 40457c478bd9Sstevel@tonic-gate * predecessor's contracts. 40467c478bd9Sstevel@tonic-gate */ 40477c478bd9Sstevel@tonic-gate if (ctp->conp_ninherited != 0) { 40487c478bd9Sstevel@tonic-gate contract_t *next; 40497c478bd9Sstevel@tonic-gate for (next = list_head(&ctp->conp_inherited); next; 40507c478bd9Sstevel@tonic-gate next = list_next(&ctp->conp_inherited, next)) { 40517c478bd9Sstevel@tonic-gate if (contract_getzuniqid(next) != zone->zone_uniqid) { 40527c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 40537c478bd9Sstevel@tonic-gate mutex_exit(&ct->ct_lock); 40547c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40557c478bd9Sstevel@tonic-gate pool_unlock(); 40567c478bd9Sstevel@tonic-gate err = EINVAL; 40577c478bd9Sstevel@tonic-gate goto out; 40587c478bd9Sstevel@tonic-gate } 40597c478bd9Sstevel@tonic-gate } 40607c478bd9Sstevel@tonic-gate } 40617c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 40627c478bd9Sstevel@tonic-gate mutex_exit(&ct->ct_lock); 40637c478bd9Sstevel@tonic-gate 40647c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 40657c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status >= ZONE_IS_SHUTTING_DOWN) { 40667c478bd9Sstevel@tonic-gate /* 40677c478bd9Sstevel@tonic-gate * Can't join 40687c478bd9Sstevel@tonic-gate */ 40697c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40707c478bd9Sstevel@tonic-gate err = EINVAL; 40717c478bd9Sstevel@tonic-gate goto out; 40727c478bd9Sstevel@tonic-gate } 40737c478bd9Sstevel@tonic-gate 40747c478bd9Sstevel@tonic-gate /* 40757c478bd9Sstevel@tonic-gate * Make sure new priv set is within the permitted set for caller 40767c478bd9Sstevel@tonic-gate */ 40777c478bd9Sstevel@tonic-gate if (!priv_issubset(zone->zone_privset, &CR_OPPRIV(CRED()))) { 40787c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40797c478bd9Sstevel@tonic-gate err = EPERM; 40807c478bd9Sstevel@tonic-gate goto out; 40817c478bd9Sstevel@tonic-gate } 40827c478bd9Sstevel@tonic-gate /* 40837c478bd9Sstevel@tonic-gate * We want to momentarily drop zonehash_lock while we optimistically 40847c478bd9Sstevel@tonic-gate * bind curproc to the pool it should be running in. This is safe 40857c478bd9Sstevel@tonic-gate * since the zone can't disappear (we have a hold on it). 40867c478bd9Sstevel@tonic-gate */ 40877c478bd9Sstevel@tonic-gate zone_hold(zone); 40887c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40897c478bd9Sstevel@tonic-gate 40907c478bd9Sstevel@tonic-gate /* 40917c478bd9Sstevel@tonic-gate * Grab pool_lock to keep the pools configuration from changing 40927c478bd9Sstevel@tonic-gate * and to stop ourselves from getting rebound to another pool 40937c478bd9Sstevel@tonic-gate * until we join the zone. 40947c478bd9Sstevel@tonic-gate */ 40957c478bd9Sstevel@tonic-gate if (pool_lock_intr() != 0) { 40967c478bd9Sstevel@tonic-gate zone_rele(zone); 40977c478bd9Sstevel@tonic-gate err = EINTR; 40987c478bd9Sstevel@tonic-gate goto out; 40997c478bd9Sstevel@tonic-gate } 41007c478bd9Sstevel@tonic-gate ASSERT(secpolicy_pool(CRED()) == 0); 41017c478bd9Sstevel@tonic-gate /* 41027c478bd9Sstevel@tonic-gate * Bind ourselves to the pool currently associated with the zone. 41037c478bd9Sstevel@tonic-gate */ 41047c478bd9Sstevel@tonic-gate oldpool = curproc->p_pool; 41057c478bd9Sstevel@tonic-gate newpool = zone_pool_get(zone); 41067c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED && newpool != oldpool && 41077c478bd9Sstevel@tonic-gate (err = pool_do_bind(newpool, P_PID, P_MYID, 41087c478bd9Sstevel@tonic-gate POOL_BIND_ALL)) != 0) { 41097c478bd9Sstevel@tonic-gate pool_unlock(); 41107c478bd9Sstevel@tonic-gate zone_rele(zone); 41117c478bd9Sstevel@tonic-gate goto out; 41127c478bd9Sstevel@tonic-gate } 41137c478bd9Sstevel@tonic-gate 41147c478bd9Sstevel@tonic-gate /* 41157c478bd9Sstevel@tonic-gate * Grab cpu_lock now; we'll need it later when we call 41167c478bd9Sstevel@tonic-gate * task_join(). 41177c478bd9Sstevel@tonic-gate */ 41187c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 41197c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 41207c478bd9Sstevel@tonic-gate /* 41217c478bd9Sstevel@tonic-gate * Make sure the zone hasn't moved on since we dropped zonehash_lock. 41227c478bd9Sstevel@tonic-gate */ 41237c478bd9Sstevel@tonic-gate if (zone_status_get(zone) >= ZONE_IS_SHUTTING_DOWN) { 41247c478bd9Sstevel@tonic-gate /* 41257c478bd9Sstevel@tonic-gate * Can't join anymore. 41267c478bd9Sstevel@tonic-gate */ 41277c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 41287c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 41297c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED && 41307c478bd9Sstevel@tonic-gate newpool != oldpool) 41317c478bd9Sstevel@tonic-gate (void) pool_do_bind(oldpool, P_PID, P_MYID, 41327c478bd9Sstevel@tonic-gate POOL_BIND_ALL); 41337c478bd9Sstevel@tonic-gate pool_unlock(); 41347c478bd9Sstevel@tonic-gate zone_rele(zone); 41357c478bd9Sstevel@tonic-gate err = EINVAL; 41367c478bd9Sstevel@tonic-gate goto out; 41377c478bd9Sstevel@tonic-gate } 41387c478bd9Sstevel@tonic-gate 41397c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 41407c478bd9Sstevel@tonic-gate zone_proj0 = zone->zone_zsched->p_task->tk_proj; 41417c478bd9Sstevel@tonic-gate /* verify that we do not exceed and task or lwp limits */ 41427c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_nlwps_lock); 41437c478bd9Sstevel@tonic-gate /* add new lwps to zone and zone's proj0 */ 41447c478bd9Sstevel@tonic-gate zone_proj0->kpj_nlwps += pp->p_lwpcnt; 41457c478bd9Sstevel@tonic-gate zone->zone_nlwps += pp->p_lwpcnt; 41467c478bd9Sstevel@tonic-gate /* add 1 task to zone's proj0 */ 41477c478bd9Sstevel@tonic-gate zone_proj0->kpj_ntasks += 1; 41487c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 41497c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_nlwps_lock); 41507c478bd9Sstevel@tonic-gate 41517c478bd9Sstevel@tonic-gate /* remove lwps from proc's old zone and old project */ 41527c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_zone->zone_nlwps_lock); 41537c478bd9Sstevel@tonic-gate pp->p_zone->zone_nlwps -= pp->p_lwpcnt; 41547c478bd9Sstevel@tonic-gate pp->p_task->tk_proj->kpj_nlwps -= pp->p_lwpcnt; 41557c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_zone->zone_nlwps_lock); 41567c478bd9Sstevel@tonic-gate 41577c478bd9Sstevel@tonic-gate /* 41587c478bd9Sstevel@tonic-gate * Joining the zone cannot fail from now on. 41597c478bd9Sstevel@tonic-gate * 41607c478bd9Sstevel@tonic-gate * This means that a lot of the following code can be commonized and 41617c478bd9Sstevel@tonic-gate * shared with zsched(). 41627c478bd9Sstevel@tonic-gate */ 41637c478bd9Sstevel@tonic-gate 41647c478bd9Sstevel@tonic-gate /* 41657c478bd9Sstevel@tonic-gate * Reset the encapsulating process contract's zone. 41667c478bd9Sstevel@tonic-gate */ 41677c478bd9Sstevel@tonic-gate ASSERT(ct->ct_mzuniqid == GLOBAL_ZONEUNIQID); 41687c478bd9Sstevel@tonic-gate contract_setzuniqid(ct, zone->zone_uniqid); 41697c478bd9Sstevel@tonic-gate 41707c478bd9Sstevel@tonic-gate /* 41717c478bd9Sstevel@tonic-gate * Create a new task and associate the process with the project keyed 41727c478bd9Sstevel@tonic-gate * by (projid,zoneid). 41737c478bd9Sstevel@tonic-gate * 41747c478bd9Sstevel@tonic-gate * We might as well be in project 0; the global zone's projid doesn't 41757c478bd9Sstevel@tonic-gate * make much sense in a zone anyhow. 41767c478bd9Sstevel@tonic-gate * 41777c478bd9Sstevel@tonic-gate * This also increments zone_ntasks, and returns with p_lock held. 41787c478bd9Sstevel@tonic-gate */ 41797c478bd9Sstevel@tonic-gate tk = task_create(0, zone); 41807c478bd9Sstevel@tonic-gate oldtk = task_join(tk, 0); 41817c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 41827c478bd9Sstevel@tonic-gate 41837c478bd9Sstevel@tonic-gate pp->p_flag |= SZONETOP; 41847c478bd9Sstevel@tonic-gate pp->p_zone = zone; 41857c478bd9Sstevel@tonic-gate 41867c478bd9Sstevel@tonic-gate /* 41877c478bd9Sstevel@tonic-gate * call RCTLOP_SET functions on this proc 41887c478bd9Sstevel@tonic-gate */ 41897c478bd9Sstevel@tonic-gate e.rcep_p.zone = zone; 41907c478bd9Sstevel@tonic-gate e.rcep_t = RCENTITY_ZONE; 41917c478bd9Sstevel@tonic-gate (void) rctl_set_dup(NULL, NULL, pp, &e, zone->zone_rctls, NULL, 41927c478bd9Sstevel@tonic-gate RCD_CALLBACK); 41937c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 41947c478bd9Sstevel@tonic-gate 41957c478bd9Sstevel@tonic-gate /* 41967c478bd9Sstevel@tonic-gate * We don't need to hold any of zsched's locks here; not only do we know 41977c478bd9Sstevel@tonic-gate * the process and zone aren't going away, we know its session isn't 41987c478bd9Sstevel@tonic-gate * changing either. 41997c478bd9Sstevel@tonic-gate * 42007c478bd9Sstevel@tonic-gate * By joining zsched's session here, we mimic the behavior in the 42017c478bd9Sstevel@tonic-gate * global zone of init's sid being the pid of sched. We extend this 42027c478bd9Sstevel@tonic-gate * to all zlogin-like zone_enter()'ing processes as well. 42037c478bd9Sstevel@tonic-gate */ 42047c478bd9Sstevel@tonic-gate mutex_enter(&pidlock); 42057c478bd9Sstevel@tonic-gate sp = zone->zone_zsched->p_sessp; 4206*9acbbeafSnn sess_hold(zone->zone_zsched); 42077c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 42087c478bd9Sstevel@tonic-gate pgexit(pp); 4209*9acbbeafSnn sess_rele(pp->p_sessp, B_TRUE); 42107c478bd9Sstevel@tonic-gate pp->p_sessp = sp; 42117c478bd9Sstevel@tonic-gate pgjoin(pp, zone->zone_zsched->p_pidp); 42127c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 42137c478bd9Sstevel@tonic-gate mutex_exit(&pidlock); 42147c478bd9Sstevel@tonic-gate 42157c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 42167c478bd9Sstevel@tonic-gate /* 42177c478bd9Sstevel@tonic-gate * We're firmly in the zone; let pools progress. 42187c478bd9Sstevel@tonic-gate */ 42197c478bd9Sstevel@tonic-gate pool_unlock(); 42207c478bd9Sstevel@tonic-gate task_rele(oldtk); 42217c478bd9Sstevel@tonic-gate /* 42227c478bd9Sstevel@tonic-gate * We don't need to retain a hold on the zone since we already 42237c478bd9Sstevel@tonic-gate * incremented zone_ntasks, so the zone isn't going anywhere. 42247c478bd9Sstevel@tonic-gate */ 42257c478bd9Sstevel@tonic-gate zone_rele(zone); 42267c478bd9Sstevel@tonic-gate 42277c478bd9Sstevel@tonic-gate /* 42287c478bd9Sstevel@tonic-gate * Chroot 42297c478bd9Sstevel@tonic-gate */ 42307c478bd9Sstevel@tonic-gate vp = zone->zone_rootvp; 42317c478bd9Sstevel@tonic-gate zone_chdir(vp, &PTOU(pp)->u_cdir, pp); 42327c478bd9Sstevel@tonic-gate zone_chdir(vp, &PTOU(pp)->u_rdir, pp); 42337c478bd9Sstevel@tonic-gate 42347c478bd9Sstevel@tonic-gate /* 42357c478bd9Sstevel@tonic-gate * Change process credentials 42367c478bd9Sstevel@tonic-gate */ 42377c478bd9Sstevel@tonic-gate newcr = cralloc(); 42387c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_crlock); 42397c478bd9Sstevel@tonic-gate cr = pp->p_cred; 42407c478bd9Sstevel@tonic-gate crcopy_to(cr, newcr); 42417c478bd9Sstevel@tonic-gate crsetzone(newcr, zone); 42427c478bd9Sstevel@tonic-gate pp->p_cred = newcr; 42437c478bd9Sstevel@tonic-gate 42447c478bd9Sstevel@tonic-gate /* 42457c478bd9Sstevel@tonic-gate * Restrict all process privilege sets to zone limit 42467c478bd9Sstevel@tonic-gate */ 42477c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_PPRIV(newcr)); 42487c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_EPRIV(newcr)); 42497c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_IPRIV(newcr)); 42507c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_LPRIV(newcr)); 42517c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_crlock); 42527c478bd9Sstevel@tonic-gate crset(pp, newcr); 42537c478bd9Sstevel@tonic-gate 42547c478bd9Sstevel@tonic-gate /* 42557c478bd9Sstevel@tonic-gate * Adjust upcount to reflect zone entry. 42567c478bd9Sstevel@tonic-gate */ 42577c478bd9Sstevel@tonic-gate uid = crgetruid(newcr); 42587c478bd9Sstevel@tonic-gate mutex_enter(&pidlock); 42597c478bd9Sstevel@tonic-gate upcount_dec(uid, GLOBAL_ZONEID); 42607c478bd9Sstevel@tonic-gate upcount_inc(uid, zoneid); 42617c478bd9Sstevel@tonic-gate mutex_exit(&pidlock); 42627c478bd9Sstevel@tonic-gate 42637c478bd9Sstevel@tonic-gate /* 42647c478bd9Sstevel@tonic-gate * Set up core file path and content. 42657c478bd9Sstevel@tonic-gate */ 42667c478bd9Sstevel@tonic-gate set_core_defaults(); 42677c478bd9Sstevel@tonic-gate 42687c478bd9Sstevel@tonic-gate out: 42697c478bd9Sstevel@tonic-gate /* 42707c478bd9Sstevel@tonic-gate * Let the other lwps continue. 42717c478bd9Sstevel@tonic-gate */ 42727c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 42737c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 42747c478bd9Sstevel@tonic-gate continuelwps(pp); 42757c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 42767c478bd9Sstevel@tonic-gate 42777c478bd9Sstevel@tonic-gate return (err != 0 ? set_errno(err) : 0); 42787c478bd9Sstevel@tonic-gate } 42797c478bd9Sstevel@tonic-gate 42807c478bd9Sstevel@tonic-gate /* 42817c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_list(2). 42827c478bd9Sstevel@tonic-gate * 42837c478bd9Sstevel@tonic-gate * Processes running in a (non-global) zone only see themselves. 428445916cd2Sjpk * On labeled systems, they see all zones whose label they dominate. 42857c478bd9Sstevel@tonic-gate */ 42867c478bd9Sstevel@tonic-gate static int 42877c478bd9Sstevel@tonic-gate zone_list(zoneid_t *zoneidlist, uint_t *numzones) 42887c478bd9Sstevel@tonic-gate { 42897c478bd9Sstevel@tonic-gate zoneid_t *zoneids; 429048451833Scarlsonj zone_t *zone, *myzone; 42917c478bd9Sstevel@tonic-gate uint_t user_nzones, real_nzones; 429245916cd2Sjpk uint_t domi_nzones; 429345916cd2Sjpk int error; 42947c478bd9Sstevel@tonic-gate 42957c478bd9Sstevel@tonic-gate if (copyin(numzones, &user_nzones, sizeof (uint_t)) != 0) 42967c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 42977c478bd9Sstevel@tonic-gate 429848451833Scarlsonj myzone = curproc->p_zone; 429948451833Scarlsonj if (myzone != global_zone) { 430045916cd2Sjpk bslabel_t *mybslab; 430145916cd2Sjpk 430245916cd2Sjpk if (!is_system_labeled()) { 430345916cd2Sjpk /* just return current zone */ 430445916cd2Sjpk real_nzones = domi_nzones = 1; 430545916cd2Sjpk zoneids = kmem_alloc(sizeof (zoneid_t), KM_SLEEP); 430648451833Scarlsonj zoneids[0] = myzone->zone_id; 430745916cd2Sjpk } else { 430845916cd2Sjpk /* return all zones that are dominated */ 430945916cd2Sjpk mutex_enter(&zonehash_lock); 431045916cd2Sjpk real_nzones = zonecount; 431145916cd2Sjpk domi_nzones = 0; 431245916cd2Sjpk if (real_nzones > 0) { 431345916cd2Sjpk zoneids = kmem_alloc(real_nzones * 431445916cd2Sjpk sizeof (zoneid_t), KM_SLEEP); 431548451833Scarlsonj mybslab = label2bslabel(myzone->zone_slabel); 431645916cd2Sjpk for (zone = list_head(&zone_active); 431745916cd2Sjpk zone != NULL; 431845916cd2Sjpk zone = list_next(&zone_active, zone)) { 431945916cd2Sjpk if (zone->zone_id == GLOBAL_ZONEID) 432045916cd2Sjpk continue; 432148451833Scarlsonj if (zone != myzone && 432248451833Scarlsonj (zone->zone_flags & ZF_IS_SCRATCH)) 432348451833Scarlsonj continue; 432448451833Scarlsonj /* 432548451833Scarlsonj * Note that a label always dominates 432648451833Scarlsonj * itself, so myzone is always included 432748451833Scarlsonj * in the list. 432848451833Scarlsonj */ 432945916cd2Sjpk if (bldominates(mybslab, 433045916cd2Sjpk label2bslabel(zone->zone_slabel))) { 433145916cd2Sjpk zoneids[domi_nzones++] = 433245916cd2Sjpk zone->zone_id; 433345916cd2Sjpk } 433445916cd2Sjpk } 433545916cd2Sjpk } 433645916cd2Sjpk mutex_exit(&zonehash_lock); 433745916cd2Sjpk } 43387c478bd9Sstevel@tonic-gate } else { 43397c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 43407c478bd9Sstevel@tonic-gate real_nzones = zonecount; 434145916cd2Sjpk domi_nzones = 0; 434245916cd2Sjpk if (real_nzones > 0) { 43437c478bd9Sstevel@tonic-gate zoneids = kmem_alloc(real_nzones * sizeof (zoneid_t), 43447c478bd9Sstevel@tonic-gate KM_SLEEP); 43457c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 43467c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 434745916cd2Sjpk zoneids[domi_nzones++] = zone->zone_id; 434845916cd2Sjpk ASSERT(domi_nzones == real_nzones); 43497c478bd9Sstevel@tonic-gate } 43507c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 43517c478bd9Sstevel@tonic-gate } 43527c478bd9Sstevel@tonic-gate 435345916cd2Sjpk /* 435445916cd2Sjpk * If user has allocated space for fewer entries than we found, then 435545916cd2Sjpk * return only up to his limit. Either way, tell him exactly how many 435645916cd2Sjpk * we found. 435745916cd2Sjpk */ 435845916cd2Sjpk if (domi_nzones < user_nzones) 435945916cd2Sjpk user_nzones = domi_nzones; 436045916cd2Sjpk error = 0; 436145916cd2Sjpk if (copyout(&domi_nzones, numzones, sizeof (uint_t)) != 0) { 43627c478bd9Sstevel@tonic-gate error = EFAULT; 436345916cd2Sjpk } else if (zoneidlist != NULL && user_nzones != 0) { 43647c478bd9Sstevel@tonic-gate if (copyout(zoneids, zoneidlist, 43657c478bd9Sstevel@tonic-gate user_nzones * sizeof (zoneid_t)) != 0) 43667c478bd9Sstevel@tonic-gate error = EFAULT; 43677c478bd9Sstevel@tonic-gate } 43687c478bd9Sstevel@tonic-gate 436945916cd2Sjpk if (real_nzones > 0) 43707c478bd9Sstevel@tonic-gate kmem_free(zoneids, real_nzones * sizeof (zoneid_t)); 43717c478bd9Sstevel@tonic-gate 437245916cd2Sjpk if (error != 0) 43737c478bd9Sstevel@tonic-gate return (set_errno(error)); 43747c478bd9Sstevel@tonic-gate else 43757c478bd9Sstevel@tonic-gate return (0); 43767c478bd9Sstevel@tonic-gate } 43777c478bd9Sstevel@tonic-gate 43787c478bd9Sstevel@tonic-gate /* 43797c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_lookup(2). 43807c478bd9Sstevel@tonic-gate * 438145916cd2Sjpk * Non-global zones are only able to see themselves and (on labeled systems) 438245916cd2Sjpk * the zones they dominate. 43837c478bd9Sstevel@tonic-gate */ 43847c478bd9Sstevel@tonic-gate static zoneid_t 43857c478bd9Sstevel@tonic-gate zone_lookup(const char *zone_name) 43867c478bd9Sstevel@tonic-gate { 43877c478bd9Sstevel@tonic-gate char *kname; 43887c478bd9Sstevel@tonic-gate zone_t *zone; 43897c478bd9Sstevel@tonic-gate zoneid_t zoneid; 43907c478bd9Sstevel@tonic-gate int err; 43917c478bd9Sstevel@tonic-gate 43927c478bd9Sstevel@tonic-gate if (zone_name == NULL) { 43937c478bd9Sstevel@tonic-gate /* return caller's zone id */ 43947c478bd9Sstevel@tonic-gate return (getzoneid()); 43957c478bd9Sstevel@tonic-gate } 43967c478bd9Sstevel@tonic-gate 43977c478bd9Sstevel@tonic-gate kname = kmem_zalloc(ZONENAME_MAX, KM_SLEEP); 43987c478bd9Sstevel@tonic-gate if ((err = copyinstr(zone_name, kname, ZONENAME_MAX, NULL)) != 0) { 43997c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 44007c478bd9Sstevel@tonic-gate return (set_errno(err)); 44017c478bd9Sstevel@tonic-gate } 44027c478bd9Sstevel@tonic-gate 44037c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 44047c478bd9Sstevel@tonic-gate zone = zone_find_all_by_name(kname); 44057c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 440645916cd2Sjpk /* 440745916cd2Sjpk * In a non-global zone, can only lookup global and own name. 440845916cd2Sjpk * In Trusted Extensions zone label dominance rules apply. 440945916cd2Sjpk */ 441045916cd2Sjpk if (zone == NULL || 441145916cd2Sjpk zone_status_get(zone) < ZONE_IS_READY || 441245916cd2Sjpk !zone_list_access(zone)) { 44137c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 44147c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 441545916cd2Sjpk } else { 441645916cd2Sjpk zoneid = zone->zone_id; 441745916cd2Sjpk mutex_exit(&zonehash_lock); 441845916cd2Sjpk return (zoneid); 44197c478bd9Sstevel@tonic-gate } 44207c478bd9Sstevel@tonic-gate } 44217c478bd9Sstevel@tonic-gate 4422821c4a97Sdp static int 4423821c4a97Sdp zone_version(int *version_arg) 4424821c4a97Sdp { 4425821c4a97Sdp int version = ZONE_SYSCALL_API_VERSION; 4426821c4a97Sdp 4427821c4a97Sdp if (copyout(&version, version_arg, sizeof (int)) != 0) 4428821c4a97Sdp return (set_errno(EFAULT)); 4429821c4a97Sdp return (0); 4430821c4a97Sdp } 4431821c4a97Sdp 44327c478bd9Sstevel@tonic-gate /* ARGSUSED */ 44337c478bd9Sstevel@tonic-gate long 4434fa9e4066Sahrens zone(int cmd, void *arg1, void *arg2, void *arg3, void *arg4) 44357c478bd9Sstevel@tonic-gate { 44367c478bd9Sstevel@tonic-gate zone_def zs; 44377c478bd9Sstevel@tonic-gate 44387c478bd9Sstevel@tonic-gate switch (cmd) { 44397c478bd9Sstevel@tonic-gate case ZONE_CREATE: 44407c478bd9Sstevel@tonic-gate if (get_udatamodel() == DATAMODEL_NATIVE) { 44417c478bd9Sstevel@tonic-gate if (copyin(arg1, &zs, sizeof (zone_def))) { 44427c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 44437c478bd9Sstevel@tonic-gate } 44447c478bd9Sstevel@tonic-gate } else { 44457c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32_IMPL 44467c478bd9Sstevel@tonic-gate zone_def32 zs32; 44477c478bd9Sstevel@tonic-gate 44487c478bd9Sstevel@tonic-gate if (copyin(arg1, &zs32, sizeof (zone_def32))) { 44497c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 44507c478bd9Sstevel@tonic-gate } 44517c478bd9Sstevel@tonic-gate zs.zone_name = 44527c478bd9Sstevel@tonic-gate (const char *)(unsigned long)zs32.zone_name; 44537c478bd9Sstevel@tonic-gate zs.zone_root = 44547c478bd9Sstevel@tonic-gate (const char *)(unsigned long)zs32.zone_root; 44557c478bd9Sstevel@tonic-gate zs.zone_privs = 44567c478bd9Sstevel@tonic-gate (const struct priv_set *) 44577c478bd9Sstevel@tonic-gate (unsigned long)zs32.zone_privs; 44586f70df68Sdp zs.zone_privssz = zs32.zone_privssz; 44597c478bd9Sstevel@tonic-gate zs.rctlbuf = (caddr_t)(unsigned long)zs32.rctlbuf; 44607c478bd9Sstevel@tonic-gate zs.rctlbufsz = zs32.rctlbufsz; 4461fa9e4066Sahrens zs.zfsbuf = (caddr_t)(unsigned long)zs32.zfsbuf; 4462fa9e4066Sahrens zs.zfsbufsz = zs32.zfsbufsz; 44637c478bd9Sstevel@tonic-gate zs.extended_error = 44647c478bd9Sstevel@tonic-gate (int *)(unsigned long)zs32.extended_error; 446545916cd2Sjpk zs.match = zs32.match; 446645916cd2Sjpk zs.doi = zs32.doi; 446745916cd2Sjpk zs.label = (const bslabel_t *)(uintptr_t)zs32.label; 44687c478bd9Sstevel@tonic-gate #else 44697c478bd9Sstevel@tonic-gate panic("get_udatamodel() returned bogus result\n"); 44707c478bd9Sstevel@tonic-gate #endif 44717c478bd9Sstevel@tonic-gate } 44727c478bd9Sstevel@tonic-gate 44737c478bd9Sstevel@tonic-gate return (zone_create(zs.zone_name, zs.zone_root, 4474821c4a97Sdp zs.zone_privs, zs.zone_privssz, 4475821c4a97Sdp (caddr_t)zs.rctlbuf, zs.rctlbufsz, 4476821c4a97Sdp (caddr_t)zs.zfsbuf, zs.zfsbufsz, 447745916cd2Sjpk zs.extended_error, zs.match, zs.doi, 447845916cd2Sjpk zs.label)); 44797c478bd9Sstevel@tonic-gate case ZONE_BOOT: 44803f2f09c1Sdp return (zone_boot((zoneid_t)(uintptr_t)arg1)); 44817c478bd9Sstevel@tonic-gate case ZONE_DESTROY: 44827c478bd9Sstevel@tonic-gate return (zone_destroy((zoneid_t)(uintptr_t)arg1)); 44837c478bd9Sstevel@tonic-gate case ZONE_GETATTR: 44847c478bd9Sstevel@tonic-gate return (zone_getattr((zoneid_t)(uintptr_t)arg1, 44857c478bd9Sstevel@tonic-gate (int)(uintptr_t)arg2, arg3, (size_t)arg4)); 44863f2f09c1Sdp case ZONE_SETATTR: 44873f2f09c1Sdp return (zone_setattr((zoneid_t)(uintptr_t)arg1, 44883f2f09c1Sdp (int)(uintptr_t)arg2, arg3, (size_t)arg4)); 44897c478bd9Sstevel@tonic-gate case ZONE_ENTER: 44907c478bd9Sstevel@tonic-gate return (zone_enter((zoneid_t)(uintptr_t)arg1)); 44917c478bd9Sstevel@tonic-gate case ZONE_LIST: 44927c478bd9Sstevel@tonic-gate return (zone_list((zoneid_t *)arg1, (uint_t *)arg2)); 44937c478bd9Sstevel@tonic-gate case ZONE_SHUTDOWN: 44947c478bd9Sstevel@tonic-gate return (zone_shutdown((zoneid_t)(uintptr_t)arg1)); 44957c478bd9Sstevel@tonic-gate case ZONE_LOOKUP: 44967c478bd9Sstevel@tonic-gate return (zone_lookup((const char *)arg1)); 4497821c4a97Sdp case ZONE_VERSION: 4498821c4a97Sdp return (zone_version((int *)arg1)); 44997c478bd9Sstevel@tonic-gate default: 45007c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 45017c478bd9Sstevel@tonic-gate } 45027c478bd9Sstevel@tonic-gate } 45037c478bd9Sstevel@tonic-gate 45047c478bd9Sstevel@tonic-gate struct zarg { 45057c478bd9Sstevel@tonic-gate zone_t *zone; 45067c478bd9Sstevel@tonic-gate zone_cmd_arg_t arg; 45077c478bd9Sstevel@tonic-gate }; 45087c478bd9Sstevel@tonic-gate 45097c478bd9Sstevel@tonic-gate static int 45107c478bd9Sstevel@tonic-gate zone_lookup_door(const char *zone_name, door_handle_t *doorp) 45117c478bd9Sstevel@tonic-gate { 45127c478bd9Sstevel@tonic-gate char *buf; 45137c478bd9Sstevel@tonic-gate size_t buflen; 45147c478bd9Sstevel@tonic-gate int error; 45157c478bd9Sstevel@tonic-gate 45167c478bd9Sstevel@tonic-gate buflen = sizeof (ZONE_DOOR_PATH) + strlen(zone_name); 45177c478bd9Sstevel@tonic-gate buf = kmem_alloc(buflen, KM_SLEEP); 45187c478bd9Sstevel@tonic-gate (void) snprintf(buf, buflen, ZONE_DOOR_PATH, zone_name); 45197c478bd9Sstevel@tonic-gate error = door_ki_open(buf, doorp); 45207c478bd9Sstevel@tonic-gate kmem_free(buf, buflen); 45217c478bd9Sstevel@tonic-gate return (error); 45227c478bd9Sstevel@tonic-gate } 45237c478bd9Sstevel@tonic-gate 45247c478bd9Sstevel@tonic-gate static void 45257c478bd9Sstevel@tonic-gate zone_release_door(door_handle_t *doorp) 45267c478bd9Sstevel@tonic-gate { 45277c478bd9Sstevel@tonic-gate door_ki_rele(*doorp); 45287c478bd9Sstevel@tonic-gate *doorp = NULL; 45297c478bd9Sstevel@tonic-gate } 45307c478bd9Sstevel@tonic-gate 45317c478bd9Sstevel@tonic-gate static void 45327c478bd9Sstevel@tonic-gate zone_ki_call_zoneadmd(struct zarg *zargp) 45337c478bd9Sstevel@tonic-gate { 45347c478bd9Sstevel@tonic-gate door_handle_t door = NULL; 45357c478bd9Sstevel@tonic-gate door_arg_t darg, save_arg; 45367c478bd9Sstevel@tonic-gate char *zone_name; 45377c478bd9Sstevel@tonic-gate size_t zone_namelen; 45387c478bd9Sstevel@tonic-gate zoneid_t zoneid; 45397c478bd9Sstevel@tonic-gate zone_t *zone; 45407c478bd9Sstevel@tonic-gate zone_cmd_arg_t arg; 45417c478bd9Sstevel@tonic-gate uint64_t uniqid; 45427c478bd9Sstevel@tonic-gate size_t size; 45437c478bd9Sstevel@tonic-gate int error; 45447c478bd9Sstevel@tonic-gate int retry; 45457c478bd9Sstevel@tonic-gate 45467c478bd9Sstevel@tonic-gate zone = zargp->zone; 45477c478bd9Sstevel@tonic-gate arg = zargp->arg; 45487c478bd9Sstevel@tonic-gate kmem_free(zargp, sizeof (*zargp)); 45497c478bd9Sstevel@tonic-gate 45507c478bd9Sstevel@tonic-gate zone_namelen = strlen(zone->zone_name) + 1; 45517c478bd9Sstevel@tonic-gate zone_name = kmem_alloc(zone_namelen, KM_SLEEP); 45527c478bd9Sstevel@tonic-gate bcopy(zone->zone_name, zone_name, zone_namelen); 45537c478bd9Sstevel@tonic-gate zoneid = zone->zone_id; 45547c478bd9Sstevel@tonic-gate uniqid = zone->zone_uniqid; 45557c478bd9Sstevel@tonic-gate /* 45567c478bd9Sstevel@tonic-gate * zoneadmd may be down, but at least we can empty out the zone. 45577c478bd9Sstevel@tonic-gate * We can ignore the return value of zone_empty() since we're called 45587c478bd9Sstevel@tonic-gate * from a kernel thread and know we won't be delivered any signals. 45597c478bd9Sstevel@tonic-gate */ 45607c478bd9Sstevel@tonic-gate ASSERT(curproc == &p0); 45617c478bd9Sstevel@tonic-gate (void) zone_empty(zone); 45627c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) >= ZONE_IS_EMPTY); 45637c478bd9Sstevel@tonic-gate zone_rele(zone); 45647c478bd9Sstevel@tonic-gate 45657c478bd9Sstevel@tonic-gate size = sizeof (arg); 45667c478bd9Sstevel@tonic-gate darg.rbuf = (char *)&arg; 45677c478bd9Sstevel@tonic-gate darg.data_ptr = (char *)&arg; 45687c478bd9Sstevel@tonic-gate darg.rsize = size; 45697c478bd9Sstevel@tonic-gate darg.data_size = size; 45707c478bd9Sstevel@tonic-gate darg.desc_ptr = NULL; 45717c478bd9Sstevel@tonic-gate darg.desc_num = 0; 45727c478bd9Sstevel@tonic-gate 45737c478bd9Sstevel@tonic-gate save_arg = darg; 45747c478bd9Sstevel@tonic-gate /* 45757c478bd9Sstevel@tonic-gate * Since we're not holding a reference to the zone, any number of 45767c478bd9Sstevel@tonic-gate * things can go wrong, including the zone disappearing before we get a 45777c478bd9Sstevel@tonic-gate * chance to talk to zoneadmd. 45787c478bd9Sstevel@tonic-gate */ 45797c478bd9Sstevel@tonic-gate for (retry = 0; /* forever */; retry++) { 45807c478bd9Sstevel@tonic-gate if (door == NULL && 45817c478bd9Sstevel@tonic-gate (error = zone_lookup_door(zone_name, &door)) != 0) { 45827c478bd9Sstevel@tonic-gate goto next; 45837c478bd9Sstevel@tonic-gate } 45847c478bd9Sstevel@tonic-gate ASSERT(door != NULL); 45857c478bd9Sstevel@tonic-gate 45867c478bd9Sstevel@tonic-gate if ((error = door_ki_upcall(door, &darg)) == 0) { 45877c478bd9Sstevel@tonic-gate break; 45887c478bd9Sstevel@tonic-gate } 45897c478bd9Sstevel@tonic-gate switch (error) { 45907c478bd9Sstevel@tonic-gate case EINTR: 45917c478bd9Sstevel@tonic-gate /* FALLTHROUGH */ 45927c478bd9Sstevel@tonic-gate case EAGAIN: /* process may be forking */ 45937c478bd9Sstevel@tonic-gate /* 45947c478bd9Sstevel@tonic-gate * Back off for a bit 45957c478bd9Sstevel@tonic-gate */ 45967c478bd9Sstevel@tonic-gate break; 45977c478bd9Sstevel@tonic-gate case EBADF: 45987c478bd9Sstevel@tonic-gate zone_release_door(&door); 45997c478bd9Sstevel@tonic-gate if (zone_lookup_door(zone_name, &door) != 0) { 46007c478bd9Sstevel@tonic-gate /* 46017c478bd9Sstevel@tonic-gate * zoneadmd may be dead, but it may come back to 46027c478bd9Sstevel@tonic-gate * life later. 46037c478bd9Sstevel@tonic-gate */ 46047c478bd9Sstevel@tonic-gate break; 46057c478bd9Sstevel@tonic-gate } 46067c478bd9Sstevel@tonic-gate break; 46077c478bd9Sstevel@tonic-gate default: 46087c478bd9Sstevel@tonic-gate cmn_err(CE_WARN, 46097c478bd9Sstevel@tonic-gate "zone_ki_call_zoneadmd: door_ki_upcall error %d\n", 46107c478bd9Sstevel@tonic-gate error); 46117c478bd9Sstevel@tonic-gate goto out; 46127c478bd9Sstevel@tonic-gate } 46137c478bd9Sstevel@tonic-gate next: 46147c478bd9Sstevel@tonic-gate /* 46157c478bd9Sstevel@tonic-gate * If this isn't the same zone_t that we originally had in mind, 46167c478bd9Sstevel@tonic-gate * then this is the same as if two kadmin requests come in at 46177c478bd9Sstevel@tonic-gate * the same time: the first one wins. This means we lose, so we 46187c478bd9Sstevel@tonic-gate * bail. 46197c478bd9Sstevel@tonic-gate */ 46207c478bd9Sstevel@tonic-gate if ((zone = zone_find_by_id(zoneid)) == NULL) { 46217c478bd9Sstevel@tonic-gate /* 46227c478bd9Sstevel@tonic-gate * Problem is solved. 46237c478bd9Sstevel@tonic-gate */ 46247c478bd9Sstevel@tonic-gate break; 46257c478bd9Sstevel@tonic-gate } 46267c478bd9Sstevel@tonic-gate if (zone->zone_uniqid != uniqid) { 46277c478bd9Sstevel@tonic-gate /* 46287c478bd9Sstevel@tonic-gate * zoneid recycled 46297c478bd9Sstevel@tonic-gate */ 46307c478bd9Sstevel@tonic-gate zone_rele(zone); 46317c478bd9Sstevel@tonic-gate break; 46327c478bd9Sstevel@tonic-gate } 46337c478bd9Sstevel@tonic-gate /* 46347c478bd9Sstevel@tonic-gate * We could zone_status_timedwait(), but there doesn't seem to 46357c478bd9Sstevel@tonic-gate * be much point in doing that (plus, it would mean that 46367c478bd9Sstevel@tonic-gate * zone_free() isn't called until this thread exits). 46377c478bd9Sstevel@tonic-gate */ 46387c478bd9Sstevel@tonic-gate zone_rele(zone); 46397c478bd9Sstevel@tonic-gate delay(hz); 46407c478bd9Sstevel@tonic-gate darg = save_arg; 46417c478bd9Sstevel@tonic-gate } 46427c478bd9Sstevel@tonic-gate out: 46437c478bd9Sstevel@tonic-gate if (door != NULL) { 46447c478bd9Sstevel@tonic-gate zone_release_door(&door); 46457c478bd9Sstevel@tonic-gate } 46467c478bd9Sstevel@tonic-gate kmem_free(zone_name, zone_namelen); 46477c478bd9Sstevel@tonic-gate thread_exit(); 46487c478bd9Sstevel@tonic-gate } 46497c478bd9Sstevel@tonic-gate 46507c478bd9Sstevel@tonic-gate /* 46513f2f09c1Sdp * Entry point for uadmin() to tell the zone to go away or reboot. Analog to 46523f2f09c1Sdp * kadmin(). The caller is a process in the zone. 46537c478bd9Sstevel@tonic-gate * 46547c478bd9Sstevel@tonic-gate * In order to shutdown the zone, we will hand off control to zoneadmd 46557c478bd9Sstevel@tonic-gate * (running in the global zone) via a door. We do a half-hearted job at 46567c478bd9Sstevel@tonic-gate * killing all processes in the zone, create a kernel thread to contact 46577c478bd9Sstevel@tonic-gate * zoneadmd, and make note of the "uniqid" of the zone. The uniqid is 46587c478bd9Sstevel@tonic-gate * a form of generation number used to let zoneadmd (as well as 46597c478bd9Sstevel@tonic-gate * zone_destroy()) know exactly which zone they're re talking about. 46607c478bd9Sstevel@tonic-gate */ 46617c478bd9Sstevel@tonic-gate int 46623f2f09c1Sdp zone_kadmin(int cmd, int fcn, const char *mdep, cred_t *credp) 46637c478bd9Sstevel@tonic-gate { 46647c478bd9Sstevel@tonic-gate struct zarg *zargp; 46657c478bd9Sstevel@tonic-gate zone_cmd_t zcmd; 46667c478bd9Sstevel@tonic-gate zone_t *zone; 46677c478bd9Sstevel@tonic-gate 46687c478bd9Sstevel@tonic-gate zone = curproc->p_zone; 46697c478bd9Sstevel@tonic-gate ASSERT(getzoneid() != GLOBAL_ZONEID); 46707c478bd9Sstevel@tonic-gate 46717c478bd9Sstevel@tonic-gate switch (cmd) { 46727c478bd9Sstevel@tonic-gate case A_SHUTDOWN: 46737c478bd9Sstevel@tonic-gate switch (fcn) { 46747c478bd9Sstevel@tonic-gate case AD_HALT: 46757c478bd9Sstevel@tonic-gate case AD_POWEROFF: 46767c478bd9Sstevel@tonic-gate zcmd = Z_HALT; 46777c478bd9Sstevel@tonic-gate break; 46787c478bd9Sstevel@tonic-gate case AD_BOOT: 46797c478bd9Sstevel@tonic-gate zcmd = Z_REBOOT; 46807c478bd9Sstevel@tonic-gate break; 46817c478bd9Sstevel@tonic-gate case AD_IBOOT: 46827c478bd9Sstevel@tonic-gate case AD_SBOOT: 46837c478bd9Sstevel@tonic-gate case AD_SIBOOT: 46847c478bd9Sstevel@tonic-gate case AD_NOSYNC: 46857c478bd9Sstevel@tonic-gate return (ENOTSUP); 46867c478bd9Sstevel@tonic-gate default: 46877c478bd9Sstevel@tonic-gate return (EINVAL); 46887c478bd9Sstevel@tonic-gate } 46897c478bd9Sstevel@tonic-gate break; 46907c478bd9Sstevel@tonic-gate case A_REBOOT: 46917c478bd9Sstevel@tonic-gate zcmd = Z_REBOOT; 46927c478bd9Sstevel@tonic-gate break; 46937c478bd9Sstevel@tonic-gate case A_FTRACE: 46947c478bd9Sstevel@tonic-gate case A_REMOUNT: 46957c478bd9Sstevel@tonic-gate case A_FREEZE: 46967c478bd9Sstevel@tonic-gate case A_DUMP: 46977c478bd9Sstevel@tonic-gate return (ENOTSUP); 46987c478bd9Sstevel@tonic-gate default: 46997c478bd9Sstevel@tonic-gate ASSERT(cmd != A_SWAPCTL); /* handled by uadmin() */ 47007c478bd9Sstevel@tonic-gate return (EINVAL); 47017c478bd9Sstevel@tonic-gate } 47027c478bd9Sstevel@tonic-gate 47037c478bd9Sstevel@tonic-gate if (secpolicy_zone_admin(credp, B_FALSE)) 47047c478bd9Sstevel@tonic-gate return (EPERM); 47057c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 47063f2f09c1Sdp 47077c478bd9Sstevel@tonic-gate /* 47087c478bd9Sstevel@tonic-gate * zone_status can't be ZONE_IS_EMPTY or higher since curproc 47097c478bd9Sstevel@tonic-gate * is in the zone. 47107c478bd9Sstevel@tonic-gate */ 47117c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) < ZONE_IS_EMPTY); 47127c478bd9Sstevel@tonic-gate if (zone_status_get(zone) > ZONE_IS_RUNNING) { 47137c478bd9Sstevel@tonic-gate /* 47147c478bd9Sstevel@tonic-gate * This zone is already on its way down. 47157c478bd9Sstevel@tonic-gate */ 47167c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 47177c478bd9Sstevel@tonic-gate return (0); 47187c478bd9Sstevel@tonic-gate } 47197c478bd9Sstevel@tonic-gate /* 47207c478bd9Sstevel@tonic-gate * Prevent future zone_enter()s 47217c478bd9Sstevel@tonic-gate */ 47227c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_SHUTTING_DOWN); 47237c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 47247c478bd9Sstevel@tonic-gate 47257c478bd9Sstevel@tonic-gate /* 47267c478bd9Sstevel@tonic-gate * Kill everyone now and call zoneadmd later. 47277c478bd9Sstevel@tonic-gate * zone_ki_call_zoneadmd() will do a more thorough job of this 47287c478bd9Sstevel@tonic-gate * later. 47297c478bd9Sstevel@tonic-gate */ 47307c478bd9Sstevel@tonic-gate killall(zone->zone_id); 47317c478bd9Sstevel@tonic-gate /* 47327c478bd9Sstevel@tonic-gate * Now, create the thread to contact zoneadmd and do the rest of the 47337c478bd9Sstevel@tonic-gate * work. This thread can't be created in our zone otherwise 47347c478bd9Sstevel@tonic-gate * zone_destroy() would deadlock. 47357c478bd9Sstevel@tonic-gate */ 47363f2f09c1Sdp zargp = kmem_zalloc(sizeof (*zargp), KM_SLEEP); 47377c478bd9Sstevel@tonic-gate zargp->arg.cmd = zcmd; 47387c478bd9Sstevel@tonic-gate zargp->arg.uniqid = zone->zone_uniqid; 47393f2f09c1Sdp zargp->zone = zone; 47407c478bd9Sstevel@tonic-gate (void) strcpy(zargp->arg.locale, "C"); 47413f2f09c1Sdp /* mdep was already copied in for us by uadmin */ 47423f2f09c1Sdp if (mdep != NULL) 47433f2f09c1Sdp (void) strlcpy(zargp->arg.bootbuf, mdep, 47443f2f09c1Sdp sizeof (zargp->arg.bootbuf)); 47453f2f09c1Sdp zone_hold(zone); 47467c478bd9Sstevel@tonic-gate 47477c478bd9Sstevel@tonic-gate (void) thread_create(NULL, 0, zone_ki_call_zoneadmd, zargp, 0, &p0, 47487c478bd9Sstevel@tonic-gate TS_RUN, minclsyspri); 47497c478bd9Sstevel@tonic-gate exit(CLD_EXITED, 0); 47507c478bd9Sstevel@tonic-gate 47517c478bd9Sstevel@tonic-gate return (EINVAL); 47527c478bd9Sstevel@tonic-gate } 47537c478bd9Sstevel@tonic-gate 47547c478bd9Sstevel@tonic-gate /* 47557c478bd9Sstevel@tonic-gate * Entry point so kadmin(A_SHUTDOWN, ...) can set the global zone's 47567c478bd9Sstevel@tonic-gate * status to ZONE_IS_SHUTTING_DOWN. 47577c478bd9Sstevel@tonic-gate */ 47587c478bd9Sstevel@tonic-gate void 47597c478bd9Sstevel@tonic-gate zone_shutdown_global(void) 47607c478bd9Sstevel@tonic-gate { 47617c478bd9Sstevel@tonic-gate ASSERT(curproc->p_zone == global_zone); 47627c478bd9Sstevel@tonic-gate 47637c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 47647c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(global_zone) == ZONE_IS_RUNNING); 47657c478bd9Sstevel@tonic-gate zone_status_set(global_zone, ZONE_IS_SHUTTING_DOWN); 47667c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 47677c478bd9Sstevel@tonic-gate } 4768fa9e4066Sahrens 4769fa9e4066Sahrens /* 4770fa9e4066Sahrens * Returns true if the named dataset is visible in the current zone. 4771fa9e4066Sahrens * The 'write' parameter is set to 1 if the dataset is also writable. 4772fa9e4066Sahrens */ 4773fa9e4066Sahrens int 4774fa9e4066Sahrens zone_dataset_visible(const char *dataset, int *write) 4775fa9e4066Sahrens { 4776fa9e4066Sahrens zone_dataset_t *zd; 4777fa9e4066Sahrens size_t len; 4778fa9e4066Sahrens zone_t *zone = curproc->p_zone; 4779fa9e4066Sahrens 4780fa9e4066Sahrens if (dataset[0] == '\0') 4781fa9e4066Sahrens return (0); 4782fa9e4066Sahrens 4783fa9e4066Sahrens /* 4784fa9e4066Sahrens * Walk the list once, looking for datasets which match exactly, or 4785fa9e4066Sahrens * specify a dataset underneath an exported dataset. If found, return 4786fa9e4066Sahrens * true and note that it is writable. 4787fa9e4066Sahrens */ 4788fa9e4066Sahrens for (zd = list_head(&zone->zone_datasets); zd != NULL; 4789fa9e4066Sahrens zd = list_next(&zone->zone_datasets, zd)) { 4790fa9e4066Sahrens 4791fa9e4066Sahrens len = strlen(zd->zd_dataset); 4792fa9e4066Sahrens if (strlen(dataset) >= len && 4793fa9e4066Sahrens bcmp(dataset, zd->zd_dataset, len) == 0 && 479495c9592aSmaybee (dataset[len] == '\0' || dataset[len] == '/' || 479595c9592aSmaybee dataset[len] == '@')) { 4796fa9e4066Sahrens if (write) 4797fa9e4066Sahrens *write = 1; 4798fa9e4066Sahrens return (1); 4799fa9e4066Sahrens } 4800fa9e4066Sahrens } 4801fa9e4066Sahrens 4802fa9e4066Sahrens /* 4803fa9e4066Sahrens * Walk the list a second time, searching for datasets which are parents 4804fa9e4066Sahrens * of exported datasets. These should be visible, but read-only. 4805fa9e4066Sahrens * 4806fa9e4066Sahrens * Note that we also have to support forms such as 'pool/dataset/', with 4807fa9e4066Sahrens * a trailing slash. 4808fa9e4066Sahrens */ 4809fa9e4066Sahrens for (zd = list_head(&zone->zone_datasets); zd != NULL; 4810fa9e4066Sahrens zd = list_next(&zone->zone_datasets, zd)) { 4811fa9e4066Sahrens 4812fa9e4066Sahrens len = strlen(dataset); 4813fa9e4066Sahrens if (dataset[len - 1] == '/') 4814fa9e4066Sahrens len--; /* Ignore trailing slash */ 4815fa9e4066Sahrens if (len < strlen(zd->zd_dataset) && 4816fa9e4066Sahrens bcmp(dataset, zd->zd_dataset, len) == 0 && 4817fa9e4066Sahrens zd->zd_dataset[len] == '/') { 4818fa9e4066Sahrens if (write) 4819fa9e4066Sahrens *write = 0; 4820fa9e4066Sahrens return (1); 4821fa9e4066Sahrens } 4822fa9e4066Sahrens } 4823fa9e4066Sahrens 4824fa9e4066Sahrens return (0); 4825fa9e4066Sahrens } 482645916cd2Sjpk 482745916cd2Sjpk /* 482845916cd2Sjpk * zone_find_by_any_path() - 482945916cd2Sjpk * 483045916cd2Sjpk * kernel-private routine similar to zone_find_by_path(), but which 483145916cd2Sjpk * effectively compares against zone paths rather than zonerootpath 483245916cd2Sjpk * (i.e., the last component of zonerootpaths, which should be "root/", 483345916cd2Sjpk * are not compared.) This is done in order to accurately identify all 483445916cd2Sjpk * paths, whether zone-visible or not, including those which are parallel 483545916cd2Sjpk * to /root/, such as /dev/, /home/, etc... 483645916cd2Sjpk * 483745916cd2Sjpk * If the specified path does not fall under any zone path then global 483845916cd2Sjpk * zone is returned. 483945916cd2Sjpk * 484045916cd2Sjpk * The treat_abs parameter indicates whether the path should be treated as 484145916cd2Sjpk * an absolute path although it does not begin with "/". (This supports 484245916cd2Sjpk * nfs mount syntax such as host:any/path.) 484345916cd2Sjpk * 484445916cd2Sjpk * The caller is responsible for zone_rele of the returned zone. 484545916cd2Sjpk */ 484645916cd2Sjpk zone_t * 484745916cd2Sjpk zone_find_by_any_path(const char *path, boolean_t treat_abs) 484845916cd2Sjpk { 484945916cd2Sjpk zone_t *zone; 485045916cd2Sjpk int path_offset = 0; 485145916cd2Sjpk 485245916cd2Sjpk if (path == NULL) { 485345916cd2Sjpk zone_hold(global_zone); 485445916cd2Sjpk return (global_zone); 485545916cd2Sjpk } 485645916cd2Sjpk 485745916cd2Sjpk if (*path != '/') { 485845916cd2Sjpk ASSERT(treat_abs); 485945916cd2Sjpk path_offset = 1; 486045916cd2Sjpk } 486145916cd2Sjpk 486245916cd2Sjpk mutex_enter(&zonehash_lock); 486345916cd2Sjpk for (zone = list_head(&zone_active); zone != NULL; 486445916cd2Sjpk zone = list_next(&zone_active, zone)) { 486545916cd2Sjpk char *c; 486645916cd2Sjpk size_t pathlen; 48670f95d722Smp char *rootpath_start; 486845916cd2Sjpk 486945916cd2Sjpk if (zone == global_zone) /* skip global zone */ 487045916cd2Sjpk continue; 487145916cd2Sjpk 487245916cd2Sjpk /* scan backwards to find start of last component */ 487345916cd2Sjpk c = zone->zone_rootpath + zone->zone_rootpathlen - 2; 487445916cd2Sjpk do { 487545916cd2Sjpk c--; 487645916cd2Sjpk } while (*c != '/'); 487745916cd2Sjpk 48780f95d722Smp pathlen = c - zone->zone_rootpath + 1 - path_offset; 48790f95d722Smp rootpath_start = (zone->zone_rootpath + path_offset); 48800f95d722Smp if (strncmp(path, rootpath_start, pathlen) == 0) 488145916cd2Sjpk break; 488245916cd2Sjpk } 488345916cd2Sjpk if (zone == NULL) 488445916cd2Sjpk zone = global_zone; 488545916cd2Sjpk zone_hold(zone); 488645916cd2Sjpk mutex_exit(&zonehash_lock); 488745916cd2Sjpk return (zone); 488845916cd2Sjpk } 4889