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 178*3f2f09c1Sdp * - zone_setattr: set attributes of a zone 179*3f2f09c1Sdp * - 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> 2187c478bd9Sstevel@tonic-gate 2197c478bd9Sstevel@tonic-gate #include <sys/door.h> 2207c478bd9Sstevel@tonic-gate #include <sys/cpuvar.h> 2217c478bd9Sstevel@tonic-gate 2227c478bd9Sstevel@tonic-gate #include <sys/uadmin.h> 2237c478bd9Sstevel@tonic-gate #include <sys/session.h> 2247c478bd9Sstevel@tonic-gate #include <sys/cmn_err.h> 2257c478bd9Sstevel@tonic-gate #include <sys/modhash.h> 226*3f2f09c1Sdp #include <sys/sunddi.h> 2277c478bd9Sstevel@tonic-gate #include <sys/nvpair.h> 2287c478bd9Sstevel@tonic-gate #include <sys/rctl.h> 2297c478bd9Sstevel@tonic-gate #include <sys/fss.h> 2307c478bd9Sstevel@tonic-gate #include <sys/zone.h> 23145916cd2Sjpk #include <sys/tsol/label.h> 2327c478bd9Sstevel@tonic-gate 2337c478bd9Sstevel@tonic-gate /* 2347c478bd9Sstevel@tonic-gate * cv used to signal that all references to the zone have been released. This 2357c478bd9Sstevel@tonic-gate * needs to be global since there may be multiple waiters, and the first to 2367c478bd9Sstevel@tonic-gate * wake up will free the zone_t, hence we cannot use zone->zone_cv. 2377c478bd9Sstevel@tonic-gate */ 2387c478bd9Sstevel@tonic-gate static kcondvar_t zone_destroy_cv; 2397c478bd9Sstevel@tonic-gate /* 2407c478bd9Sstevel@tonic-gate * Lock used to serialize access to zone_cv. This could have been per-zone, 2417c478bd9Sstevel@tonic-gate * but then we'd need another lock for zone_destroy_cv, and why bother? 2427c478bd9Sstevel@tonic-gate */ 2437c478bd9Sstevel@tonic-gate static kmutex_t zone_status_lock; 2447c478bd9Sstevel@tonic-gate 2457c478bd9Sstevel@tonic-gate /* 2467c478bd9Sstevel@tonic-gate * ZSD-related global variables. 2477c478bd9Sstevel@tonic-gate */ 2487c478bd9Sstevel@tonic-gate static kmutex_t zsd_key_lock; /* protects the following two */ 2497c478bd9Sstevel@tonic-gate /* 2507c478bd9Sstevel@tonic-gate * The next caller of zone_key_create() will be assigned a key of ++zsd_keyval. 2517c478bd9Sstevel@tonic-gate */ 2527c478bd9Sstevel@tonic-gate static zone_key_t zsd_keyval = 0; 2537c478bd9Sstevel@tonic-gate /* 2547c478bd9Sstevel@tonic-gate * Global list of registered keys. We use this when a new zone is created. 2557c478bd9Sstevel@tonic-gate */ 2567c478bd9Sstevel@tonic-gate static list_t zsd_registered_keys; 2577c478bd9Sstevel@tonic-gate 2587c478bd9Sstevel@tonic-gate int zone_hash_size = 256; 25945916cd2Sjpk static mod_hash_t *zonehashbyname, *zonehashbyid, *zonehashbylabel; 2607c478bd9Sstevel@tonic-gate static kmutex_t zonehash_lock; 2617c478bd9Sstevel@tonic-gate static uint_t zonecount; 2627c478bd9Sstevel@tonic-gate static id_space_t *zoneid_space; 2637c478bd9Sstevel@tonic-gate 2647c478bd9Sstevel@tonic-gate /* 2657c478bd9Sstevel@tonic-gate * The global zone (aka zone0) is the all-seeing, all-knowing zone in which the 2667c478bd9Sstevel@tonic-gate * kernel proper runs, and which manages all other zones. 2677c478bd9Sstevel@tonic-gate * 2687c478bd9Sstevel@tonic-gate * Although not declared as static, the variable "zone0" should not be used 2697c478bd9Sstevel@tonic-gate * except for by code that needs to reference the global zone early on in boot, 2707c478bd9Sstevel@tonic-gate * before it is fully initialized. All other consumers should use 2717c478bd9Sstevel@tonic-gate * 'global_zone'. 2727c478bd9Sstevel@tonic-gate */ 2737c478bd9Sstevel@tonic-gate zone_t zone0; 2747c478bd9Sstevel@tonic-gate zone_t *global_zone = NULL; /* Set when the global zone is initialized */ 2757c478bd9Sstevel@tonic-gate 2767c478bd9Sstevel@tonic-gate /* 2777c478bd9Sstevel@tonic-gate * List of active zones, protected by zonehash_lock. 2787c478bd9Sstevel@tonic-gate */ 2797c478bd9Sstevel@tonic-gate static list_t zone_active; 2807c478bd9Sstevel@tonic-gate 2817c478bd9Sstevel@tonic-gate /* 2827c478bd9Sstevel@tonic-gate * List of destroyed zones that still have outstanding cred references. 2837c478bd9Sstevel@tonic-gate * Used for debugging. Uses a separate lock to avoid lock ordering 2847c478bd9Sstevel@tonic-gate * problems in zone_free. 2857c478bd9Sstevel@tonic-gate */ 2867c478bd9Sstevel@tonic-gate static list_t zone_deathrow; 2877c478bd9Sstevel@tonic-gate static kmutex_t zone_deathrow_lock; 2887c478bd9Sstevel@tonic-gate 2897c478bd9Sstevel@tonic-gate /* number of zones is limited by virtual interface limit in IP */ 2907c478bd9Sstevel@tonic-gate uint_t maxzones = 8192; 2917c478bd9Sstevel@tonic-gate 292cf8f45c7Sdstaff /* Event channel to sent zone state change notifications */ 293cf8f45c7Sdstaff evchan_t *zone_event_chan; 294cf8f45c7Sdstaff 295cf8f45c7Sdstaff /* 296cf8f45c7Sdstaff * This table holds the mapping from kernel zone states to 297cf8f45c7Sdstaff * states visible in the state notification API. 298cf8f45c7Sdstaff * The idea is that we only expose "obvious" states and 299cf8f45c7Sdstaff * do not expose states which are just implementation details. 300cf8f45c7Sdstaff */ 301cf8f45c7Sdstaff const char *zone_status_table[] = { 302cf8f45c7Sdstaff ZONE_EVENT_UNINITIALIZED, /* uninitialized */ 303cf8f45c7Sdstaff ZONE_EVENT_READY, /* ready */ 304cf8f45c7Sdstaff ZONE_EVENT_READY, /* booting */ 305cf8f45c7Sdstaff ZONE_EVENT_RUNNING, /* running */ 306cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* shutting_down */ 307cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* empty */ 308cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* down */ 309cf8f45c7Sdstaff ZONE_EVENT_SHUTTING_DOWN, /* dying */ 310cf8f45c7Sdstaff ZONE_EVENT_UNINITIALIZED, /* dead */ 311cf8f45c7Sdstaff }; 312cf8f45c7Sdstaff 3137c478bd9Sstevel@tonic-gate /* 3147c478bd9Sstevel@tonic-gate * This isn't static so lint doesn't complain. 3157c478bd9Sstevel@tonic-gate */ 3167c478bd9Sstevel@tonic-gate rctl_hndl_t rc_zone_cpu_shares; 3177c478bd9Sstevel@tonic-gate rctl_hndl_t rc_zone_nlwps; 3187c478bd9Sstevel@tonic-gate /* 3197c478bd9Sstevel@tonic-gate * Synchronization primitives used to synchronize between mounts and zone 3207c478bd9Sstevel@tonic-gate * creation/destruction. 3217c478bd9Sstevel@tonic-gate */ 3227c478bd9Sstevel@tonic-gate static int mounts_in_progress; 3237c478bd9Sstevel@tonic-gate static kcondvar_t mount_cv; 3247c478bd9Sstevel@tonic-gate static kmutex_t mount_lock; 3257c478bd9Sstevel@tonic-gate 326*3f2f09c1Sdp const char * const zone_default_initname = "/sbin/init"; 32745916cd2Sjpk static char * const zone_prefix = "/zone/"; 3287c478bd9Sstevel@tonic-gate 3297c478bd9Sstevel@tonic-gate static int zone_shutdown(zoneid_t zoneid); 3307c478bd9Sstevel@tonic-gate 331821c4a97Sdp /* 332821c4a97Sdp * Bump this number when you alter the zone syscall interfaces; this is 333821c4a97Sdp * because we need to have support for previous API versions in libc 334821c4a97Sdp * to support patching; libc calls into the kernel to determine this number. 335821c4a97Sdp * 336821c4a97Sdp * Version 1 of the API is the version originally shipped with Solaris 10 337821c4a97Sdp * Version 2 alters the zone_create system call in order to support more 338821c4a97Sdp * arguments by moving the args into a structure; and to do better 339821c4a97Sdp * error reporting when zone_create() fails. 340821c4a97Sdp * Version 3 alters the zone_create system call in order to support the 341821c4a97Sdp * import of ZFS datasets to zones. 34245916cd2Sjpk * Version 4 alters the zone_create system call in order to support 34345916cd2Sjpk * Trusted Extensions. 344*3f2f09c1Sdp * Version 5 alters the zone_boot system call, and converts its old 345*3f2f09c1Sdp * bootargs parameter to be set by the zone_setattr API instead. 346821c4a97Sdp */ 347*3f2f09c1Sdp static const int ZONE_SYSCALL_API_VERSION = 5; 348821c4a97Sdp 3497c478bd9Sstevel@tonic-gate /* 3507c478bd9Sstevel@tonic-gate * Certain filesystems (such as NFS and autofs) need to know which zone 3517c478bd9Sstevel@tonic-gate * the mount is being placed in. Because of this, we need to be able to 3527c478bd9Sstevel@tonic-gate * ensure that a zone isn't in the process of being created such that 3537c478bd9Sstevel@tonic-gate * nfs_mount() thinks it is in the global zone, while by the time it 3547c478bd9Sstevel@tonic-gate * gets added the list of mounted zones, it ends up on zoneA's mount 3557c478bd9Sstevel@tonic-gate * list. 3567c478bd9Sstevel@tonic-gate * 3577c478bd9Sstevel@tonic-gate * The following functions: block_mounts()/resume_mounts() and 3587c478bd9Sstevel@tonic-gate * mount_in_progress()/mount_completed() are used by zones and the VFS 3597c478bd9Sstevel@tonic-gate * layer (respectively) to synchronize zone creation and new mounts. 3607c478bd9Sstevel@tonic-gate * 3617c478bd9Sstevel@tonic-gate * The semantics are like a reader-reader lock such that there may 3627c478bd9Sstevel@tonic-gate * either be multiple mounts (or zone creations, if that weren't 3637c478bd9Sstevel@tonic-gate * serialized by zonehash_lock) in progress at the same time, but not 3647c478bd9Sstevel@tonic-gate * both. 3657c478bd9Sstevel@tonic-gate * 3667c478bd9Sstevel@tonic-gate * We use cv's so the user can ctrl-C out of the operation if it's 3677c478bd9Sstevel@tonic-gate * taking too long. 3687c478bd9Sstevel@tonic-gate * 3697c478bd9Sstevel@tonic-gate * The semantics are such that there is unfair bias towards the 3707c478bd9Sstevel@tonic-gate * "current" operation. This means that zone creations may starve if 3717c478bd9Sstevel@tonic-gate * there is a rapid succession of new mounts coming in to the system, or 3727c478bd9Sstevel@tonic-gate * there is a remote possibility that zones will be created at such a 3737c478bd9Sstevel@tonic-gate * rate that new mounts will not be able to proceed. 3747c478bd9Sstevel@tonic-gate */ 3757c478bd9Sstevel@tonic-gate /* 3767c478bd9Sstevel@tonic-gate * Prevent new mounts from progressing to the point of calling 3777c478bd9Sstevel@tonic-gate * VFS_MOUNT(). If there are already mounts in this "region", wait for 3787c478bd9Sstevel@tonic-gate * them to complete. 3797c478bd9Sstevel@tonic-gate */ 3807c478bd9Sstevel@tonic-gate static int 3817c478bd9Sstevel@tonic-gate block_mounts(void) 3827c478bd9Sstevel@tonic-gate { 3837c478bd9Sstevel@tonic-gate int retval = 0; 3847c478bd9Sstevel@tonic-gate 3857c478bd9Sstevel@tonic-gate /* 3867c478bd9Sstevel@tonic-gate * Since it may block for a long time, block_mounts() shouldn't be 3877c478bd9Sstevel@tonic-gate * called with zonehash_lock held. 3887c478bd9Sstevel@tonic-gate */ 3897c478bd9Sstevel@tonic-gate ASSERT(MUTEX_NOT_HELD(&zonehash_lock)); 3907c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 3917c478bd9Sstevel@tonic-gate while (mounts_in_progress > 0) { 3927c478bd9Sstevel@tonic-gate if (cv_wait_sig(&mount_cv, &mount_lock) == 0) 3937c478bd9Sstevel@tonic-gate goto signaled; 3947c478bd9Sstevel@tonic-gate } 3957c478bd9Sstevel@tonic-gate /* 3967c478bd9Sstevel@tonic-gate * A negative value of mounts_in_progress indicates that mounts 3977c478bd9Sstevel@tonic-gate * have been blocked by (-mounts_in_progress) different callers. 3987c478bd9Sstevel@tonic-gate */ 3997c478bd9Sstevel@tonic-gate mounts_in_progress--; 4007c478bd9Sstevel@tonic-gate retval = 1; 4017c478bd9Sstevel@tonic-gate signaled: 4027c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4037c478bd9Sstevel@tonic-gate return (retval); 4047c478bd9Sstevel@tonic-gate } 4057c478bd9Sstevel@tonic-gate 4067c478bd9Sstevel@tonic-gate /* 4077c478bd9Sstevel@tonic-gate * The VFS layer may progress with new mounts as far as we're concerned. 4087c478bd9Sstevel@tonic-gate * Allow them to progress if we were the last obstacle. 4097c478bd9Sstevel@tonic-gate */ 4107c478bd9Sstevel@tonic-gate static void 4117c478bd9Sstevel@tonic-gate resume_mounts(void) 4127c478bd9Sstevel@tonic-gate { 4137c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 4147c478bd9Sstevel@tonic-gate if (++mounts_in_progress == 0) 4157c478bd9Sstevel@tonic-gate cv_broadcast(&mount_cv); 4167c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4177c478bd9Sstevel@tonic-gate } 4187c478bd9Sstevel@tonic-gate 4197c478bd9Sstevel@tonic-gate /* 4207c478bd9Sstevel@tonic-gate * The VFS layer is busy with a mount; zones should wait until all 4217c478bd9Sstevel@tonic-gate * mounts are completed to progress. 4227c478bd9Sstevel@tonic-gate */ 4237c478bd9Sstevel@tonic-gate void 4247c478bd9Sstevel@tonic-gate mount_in_progress(void) 4257c478bd9Sstevel@tonic-gate { 4267c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 4277c478bd9Sstevel@tonic-gate while (mounts_in_progress < 0) 4287c478bd9Sstevel@tonic-gate cv_wait(&mount_cv, &mount_lock); 4297c478bd9Sstevel@tonic-gate mounts_in_progress++; 4307c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4317c478bd9Sstevel@tonic-gate } 4327c478bd9Sstevel@tonic-gate 4337c478bd9Sstevel@tonic-gate /* 4347c478bd9Sstevel@tonic-gate * VFS is done with one mount; wake up any waiting block_mounts() 4357c478bd9Sstevel@tonic-gate * callers if this is the last mount. 4367c478bd9Sstevel@tonic-gate */ 4377c478bd9Sstevel@tonic-gate void 4387c478bd9Sstevel@tonic-gate mount_completed(void) 4397c478bd9Sstevel@tonic-gate { 4407c478bd9Sstevel@tonic-gate mutex_enter(&mount_lock); 4417c478bd9Sstevel@tonic-gate if (--mounts_in_progress == 0) 4427c478bd9Sstevel@tonic-gate cv_broadcast(&mount_cv); 4437c478bd9Sstevel@tonic-gate mutex_exit(&mount_lock); 4447c478bd9Sstevel@tonic-gate } 4457c478bd9Sstevel@tonic-gate 4467c478bd9Sstevel@tonic-gate /* 4477c478bd9Sstevel@tonic-gate * ZSD routines. 4487c478bd9Sstevel@tonic-gate * 4497c478bd9Sstevel@tonic-gate * Zone Specific Data (ZSD) is modeled after Thread Specific Data as 4507c478bd9Sstevel@tonic-gate * defined by the pthread_key_create() and related interfaces. 4517c478bd9Sstevel@tonic-gate * 4527c478bd9Sstevel@tonic-gate * Kernel subsystems may register one or more data items and/or 4537c478bd9Sstevel@tonic-gate * callbacks to be executed when a zone is created, shutdown, or 4547c478bd9Sstevel@tonic-gate * destroyed. 4557c478bd9Sstevel@tonic-gate * 4567c478bd9Sstevel@tonic-gate * Unlike the thread counterpart, destructor callbacks will be executed 4577c478bd9Sstevel@tonic-gate * even if the data pointer is NULL and/or there are no constructor 4587c478bd9Sstevel@tonic-gate * callbacks, so it is the responsibility of such callbacks to check for 4597c478bd9Sstevel@tonic-gate * NULL data values if necessary. 4607c478bd9Sstevel@tonic-gate * 4617c478bd9Sstevel@tonic-gate * The locking strategy and overall picture is as follows: 4627c478bd9Sstevel@tonic-gate * 4637c478bd9Sstevel@tonic-gate * When someone calls zone_key_create(), a template ZSD entry is added to the 4647c478bd9Sstevel@tonic-gate * global list "zsd_registered_keys", protected by zsd_key_lock. The 4657c478bd9Sstevel@tonic-gate * constructor callback is called immediately on all existing zones, and a 4667c478bd9Sstevel@tonic-gate * copy of the ZSD entry added to the per-zone zone_zsd list (protected by 4677c478bd9Sstevel@tonic-gate * zone_lock). As this operation requires the list of zones, the list of 4687c478bd9Sstevel@tonic-gate * registered keys, and the per-zone list of ZSD entries to remain constant 4697c478bd9Sstevel@tonic-gate * throughout the entire operation, it must grab zonehash_lock, zone_lock for 4707c478bd9Sstevel@tonic-gate * all existing zones, and zsd_key_lock, in that order. Similar locking is 4717c478bd9Sstevel@tonic-gate * needed when zone_key_delete() is called. It is thus sufficient to hold 4727c478bd9Sstevel@tonic-gate * zsd_key_lock *or* zone_lock to prevent additions to or removals from the 4737c478bd9Sstevel@tonic-gate * per-zone zone_zsd list. 4747c478bd9Sstevel@tonic-gate * 4757c478bd9Sstevel@tonic-gate * Note that this implementation does not make a copy of the ZSD entry if a 4767c478bd9Sstevel@tonic-gate * constructor callback is not provided. A zone_getspecific() on such an 4777c478bd9Sstevel@tonic-gate * uninitialized ZSD entry will return NULL. 4787c478bd9Sstevel@tonic-gate * 4797c478bd9Sstevel@tonic-gate * When new zones are created constructor callbacks for all registered ZSD 4807c478bd9Sstevel@tonic-gate * entries will be called. 4817c478bd9Sstevel@tonic-gate * 4827c478bd9Sstevel@tonic-gate * The framework does not provide any locking around zone_getspecific() and 4837c478bd9Sstevel@tonic-gate * zone_setspecific() apart from that needed for internal consistency, so 4847c478bd9Sstevel@tonic-gate * callers interested in atomic "test-and-set" semantics will need to provide 4857c478bd9Sstevel@tonic-gate * their own locking. 4867c478bd9Sstevel@tonic-gate */ 4877c478bd9Sstevel@tonic-gate void 4887c478bd9Sstevel@tonic-gate zone_key_create(zone_key_t *keyp, void *(*create)(zoneid_t), 4897c478bd9Sstevel@tonic-gate void (*shutdown)(zoneid_t, void *), void (*destroy)(zoneid_t, void *)) 4907c478bd9Sstevel@tonic-gate { 4917c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp; 4927c478bd9Sstevel@tonic-gate struct zsd_entry *t; 4937c478bd9Sstevel@tonic-gate struct zone *zone; 4947c478bd9Sstevel@tonic-gate 4957c478bd9Sstevel@tonic-gate zsdp = kmem_alloc(sizeof (*zsdp), KM_SLEEP); 4967c478bd9Sstevel@tonic-gate zsdp->zsd_data = NULL; 4977c478bd9Sstevel@tonic-gate zsdp->zsd_create = create; 4987c478bd9Sstevel@tonic-gate zsdp->zsd_shutdown = shutdown; 4997c478bd9Sstevel@tonic-gate zsdp->zsd_destroy = destroy; 5007c478bd9Sstevel@tonic-gate 5017c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); /* stop the world */ 5027c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5037c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 5047c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); /* lock all zones */ 5057c478bd9Sstevel@tonic-gate 5067c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 5077c478bd9Sstevel@tonic-gate *keyp = zsdp->zsd_key = ++zsd_keyval; 5087c478bd9Sstevel@tonic-gate ASSERT(zsd_keyval != 0); 5097c478bd9Sstevel@tonic-gate list_insert_tail(&zsd_registered_keys, zsdp); 5107c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 5117c478bd9Sstevel@tonic-gate 5127c478bd9Sstevel@tonic-gate if (create != NULL) { 5137c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5147c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 5157c478bd9Sstevel@tonic-gate t = kmem_alloc(sizeof (*t), KM_SLEEP); 5167c478bd9Sstevel@tonic-gate t->zsd_key = *keyp; 5177c478bd9Sstevel@tonic-gate t->zsd_data = (*create)(zone->zone_id); 5187c478bd9Sstevel@tonic-gate t->zsd_create = create; 5197c478bd9Sstevel@tonic-gate t->zsd_shutdown = shutdown; 5207c478bd9Sstevel@tonic-gate t->zsd_destroy = destroy; 5217c478bd9Sstevel@tonic-gate list_insert_tail(&zone->zone_zsd, t); 5227c478bd9Sstevel@tonic-gate } 5237c478bd9Sstevel@tonic-gate } 5247c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5257c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 5267c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 5277c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 5287c478bd9Sstevel@tonic-gate } 5297c478bd9Sstevel@tonic-gate 5307c478bd9Sstevel@tonic-gate /* 5317c478bd9Sstevel@tonic-gate * Helper function to find the zsd_entry associated with the key in the 5327c478bd9Sstevel@tonic-gate * given list. 5337c478bd9Sstevel@tonic-gate */ 5347c478bd9Sstevel@tonic-gate static struct zsd_entry * 5357c478bd9Sstevel@tonic-gate zsd_find(list_t *l, zone_key_t key) 5367c478bd9Sstevel@tonic-gate { 5377c478bd9Sstevel@tonic-gate struct zsd_entry *zsd; 5387c478bd9Sstevel@tonic-gate 5397c478bd9Sstevel@tonic-gate for (zsd = list_head(l); zsd != NULL; zsd = list_next(l, zsd)) { 5407c478bd9Sstevel@tonic-gate if (zsd->zsd_key == key) { 5417c478bd9Sstevel@tonic-gate /* 5427c478bd9Sstevel@tonic-gate * Move to head of list to keep list in MRU order. 5437c478bd9Sstevel@tonic-gate */ 5447c478bd9Sstevel@tonic-gate if (zsd != list_head(l)) { 5457c478bd9Sstevel@tonic-gate list_remove(l, zsd); 5467c478bd9Sstevel@tonic-gate list_insert_head(l, zsd); 5477c478bd9Sstevel@tonic-gate } 5487c478bd9Sstevel@tonic-gate return (zsd); 5497c478bd9Sstevel@tonic-gate } 5507c478bd9Sstevel@tonic-gate } 5517c478bd9Sstevel@tonic-gate return (NULL); 5527c478bd9Sstevel@tonic-gate } 5537c478bd9Sstevel@tonic-gate 5547c478bd9Sstevel@tonic-gate /* 5557c478bd9Sstevel@tonic-gate * Function called when a module is being unloaded, or otherwise wishes 5567c478bd9Sstevel@tonic-gate * to unregister its ZSD key and callbacks. 5577c478bd9Sstevel@tonic-gate */ 5587c478bd9Sstevel@tonic-gate int 5597c478bd9Sstevel@tonic-gate zone_key_delete(zone_key_t key) 5607c478bd9Sstevel@tonic-gate { 5617c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp = NULL; 5627c478bd9Sstevel@tonic-gate zone_t *zone; 5637c478bd9Sstevel@tonic-gate 5647c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); /* Zone create/delete waits for us */ 5657c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5667c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 5677c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); /* lock all zones */ 5687c478bd9Sstevel@tonic-gate 5697c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 5707c478bd9Sstevel@tonic-gate zsdp = zsd_find(&zsd_registered_keys, key); 5717c478bd9Sstevel@tonic-gate if (zsdp == NULL) 5727c478bd9Sstevel@tonic-gate goto notfound; 5737c478bd9Sstevel@tonic-gate list_remove(&zsd_registered_keys, zsdp); 5747c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 5757c478bd9Sstevel@tonic-gate 5767c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 5777c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 5787c478bd9Sstevel@tonic-gate struct zsd_entry *del; 5797c478bd9Sstevel@tonic-gate void *data; 5807c478bd9Sstevel@tonic-gate 5817c478bd9Sstevel@tonic-gate if (!(zone->zone_flags & ZF_DESTROYED)) { 5827c478bd9Sstevel@tonic-gate del = zsd_find(&zone->zone_zsd, key); 5837c478bd9Sstevel@tonic-gate if (del != NULL) { 5847c478bd9Sstevel@tonic-gate data = del->zsd_data; 5857c478bd9Sstevel@tonic-gate ASSERT(del->zsd_shutdown == zsdp->zsd_shutdown); 5867c478bd9Sstevel@tonic-gate ASSERT(del->zsd_destroy == zsdp->zsd_destroy); 5877c478bd9Sstevel@tonic-gate list_remove(&zone->zone_zsd, del); 5887c478bd9Sstevel@tonic-gate kmem_free(del, sizeof (*del)); 5897c478bd9Sstevel@tonic-gate } else { 5907c478bd9Sstevel@tonic-gate data = NULL; 5917c478bd9Sstevel@tonic-gate } 5927c478bd9Sstevel@tonic-gate if (zsdp->zsd_shutdown) 5937c478bd9Sstevel@tonic-gate zsdp->zsd_shutdown(zone->zone_id, data); 5947c478bd9Sstevel@tonic-gate if (zsdp->zsd_destroy) 5957c478bd9Sstevel@tonic-gate zsdp->zsd_destroy(zone->zone_id, data); 5967c478bd9Sstevel@tonic-gate } 5977c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 5987c478bd9Sstevel@tonic-gate } 5997c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 6007c478bd9Sstevel@tonic-gate kmem_free(zsdp, sizeof (*zsdp)); 6017c478bd9Sstevel@tonic-gate return (0); 6027c478bd9Sstevel@tonic-gate 6037c478bd9Sstevel@tonic-gate notfound: 6047c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 6057c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 6067c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 6077c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6087c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 6097c478bd9Sstevel@tonic-gate return (-1); 6107c478bd9Sstevel@tonic-gate } 6117c478bd9Sstevel@tonic-gate 6127c478bd9Sstevel@tonic-gate /* 6137c478bd9Sstevel@tonic-gate * ZSD counterpart of pthread_setspecific(). 6147c478bd9Sstevel@tonic-gate */ 6157c478bd9Sstevel@tonic-gate int 6167c478bd9Sstevel@tonic-gate zone_setspecific(zone_key_t key, zone_t *zone, const void *data) 6177c478bd9Sstevel@tonic-gate { 6187c478bd9Sstevel@tonic-gate struct zsd_entry *t; 6197c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp = NULL; 6207c478bd9Sstevel@tonic-gate 6217c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 6227c478bd9Sstevel@tonic-gate t = zsd_find(&zone->zone_zsd, key); 6237c478bd9Sstevel@tonic-gate if (t != NULL) { 6247c478bd9Sstevel@tonic-gate /* 6257c478bd9Sstevel@tonic-gate * Replace old value with new 6267c478bd9Sstevel@tonic-gate */ 6277c478bd9Sstevel@tonic-gate t->zsd_data = (void *)data; 6287c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6297c478bd9Sstevel@tonic-gate return (0); 6307c478bd9Sstevel@tonic-gate } 6317c478bd9Sstevel@tonic-gate /* 6327c478bd9Sstevel@tonic-gate * If there was no previous value, go through the list of registered 6337c478bd9Sstevel@tonic-gate * keys. 6347c478bd9Sstevel@tonic-gate * 6357c478bd9Sstevel@tonic-gate * We avoid grabbing zsd_key_lock until we are sure we need it; this is 6367c478bd9Sstevel@tonic-gate * necessary for shutdown callbacks to be able to execute without fear 6377c478bd9Sstevel@tonic-gate * of deadlock. 6387c478bd9Sstevel@tonic-gate */ 6397c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 6407c478bd9Sstevel@tonic-gate zsdp = zsd_find(&zsd_registered_keys, key); 6417c478bd9Sstevel@tonic-gate if (zsdp == NULL) { /* Key was not registered */ 6427c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 6437c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6447c478bd9Sstevel@tonic-gate return (-1); 6457c478bd9Sstevel@tonic-gate } 6467c478bd9Sstevel@tonic-gate 6477c478bd9Sstevel@tonic-gate /* 6487c478bd9Sstevel@tonic-gate * Add a zsd_entry to this zone, using the template we just retrieved 6497c478bd9Sstevel@tonic-gate * to initialize the constructor and destructor(s). 6507c478bd9Sstevel@tonic-gate */ 6517c478bd9Sstevel@tonic-gate t = kmem_alloc(sizeof (*t), KM_SLEEP); 6527c478bd9Sstevel@tonic-gate t->zsd_key = key; 6537c478bd9Sstevel@tonic-gate t->zsd_data = (void *)data; 6547c478bd9Sstevel@tonic-gate t->zsd_create = zsdp->zsd_create; 6557c478bd9Sstevel@tonic-gate t->zsd_shutdown = zsdp->zsd_shutdown; 6567c478bd9Sstevel@tonic-gate t->zsd_destroy = zsdp->zsd_destroy; 6577c478bd9Sstevel@tonic-gate list_insert_tail(&zone->zone_zsd, t); 6587c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 6597c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6607c478bd9Sstevel@tonic-gate return (0); 6617c478bd9Sstevel@tonic-gate } 6627c478bd9Sstevel@tonic-gate 6637c478bd9Sstevel@tonic-gate /* 6647c478bd9Sstevel@tonic-gate * ZSD counterpart of pthread_getspecific(). 6657c478bd9Sstevel@tonic-gate */ 6667c478bd9Sstevel@tonic-gate void * 6677c478bd9Sstevel@tonic-gate zone_getspecific(zone_key_t key, zone_t *zone) 6687c478bd9Sstevel@tonic-gate { 6697c478bd9Sstevel@tonic-gate struct zsd_entry *t; 6707c478bd9Sstevel@tonic-gate void *data; 6717c478bd9Sstevel@tonic-gate 6727c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 6737c478bd9Sstevel@tonic-gate t = zsd_find(&zone->zone_zsd, key); 6747c478bd9Sstevel@tonic-gate data = (t == NULL ? NULL : t->zsd_data); 6757c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 6767c478bd9Sstevel@tonic-gate return (data); 6777c478bd9Sstevel@tonic-gate } 6787c478bd9Sstevel@tonic-gate 6797c478bd9Sstevel@tonic-gate /* 6807c478bd9Sstevel@tonic-gate * Function used to initialize a zone's list of ZSD callbacks and data 6817c478bd9Sstevel@tonic-gate * when the zone is being created. The callbacks are initialized from 6827c478bd9Sstevel@tonic-gate * the template list (zsd_registered_keys), and the constructor 6837c478bd9Sstevel@tonic-gate * callback executed (if one exists). 6847c478bd9Sstevel@tonic-gate * 6857c478bd9Sstevel@tonic-gate * This is called before the zone is made publicly available, hence no 6867c478bd9Sstevel@tonic-gate * need to grab zone_lock. 6877c478bd9Sstevel@tonic-gate * 6887c478bd9Sstevel@tonic-gate * Although we grab and release zsd_key_lock, new entries cannot be 6897c478bd9Sstevel@tonic-gate * added to or removed from the zsd_registered_keys list until we 6907c478bd9Sstevel@tonic-gate * release zonehash_lock, so there isn't a window for a 6917c478bd9Sstevel@tonic-gate * zone_key_create() to come in after we've dropped zsd_key_lock but 6927c478bd9Sstevel@tonic-gate * before the zone is added to the zone list, such that the constructor 6937c478bd9Sstevel@tonic-gate * callbacks aren't executed for the new zone. 6947c478bd9Sstevel@tonic-gate */ 6957c478bd9Sstevel@tonic-gate static void 6967c478bd9Sstevel@tonic-gate zone_zsd_configure(zone_t *zone) 6977c478bd9Sstevel@tonic-gate { 6987c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp; 6997c478bd9Sstevel@tonic-gate struct zsd_entry *t; 7007c478bd9Sstevel@tonic-gate zoneid_t zoneid = zone->zone_id; 7017c478bd9Sstevel@tonic-gate 7027c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 7037c478bd9Sstevel@tonic-gate ASSERT(list_head(&zone->zone_zsd) == NULL); 7047c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 7057c478bd9Sstevel@tonic-gate for (zsdp = list_head(&zsd_registered_keys); zsdp != NULL; 7067c478bd9Sstevel@tonic-gate zsdp = list_next(&zsd_registered_keys, zsdp)) { 7077c478bd9Sstevel@tonic-gate if (zsdp->zsd_create != NULL) { 7087c478bd9Sstevel@tonic-gate t = kmem_alloc(sizeof (*t), KM_SLEEP); 7097c478bd9Sstevel@tonic-gate t->zsd_key = zsdp->zsd_key; 7107c478bd9Sstevel@tonic-gate t->zsd_create = zsdp->zsd_create; 7117c478bd9Sstevel@tonic-gate t->zsd_data = (*t->zsd_create)(zoneid); 7127c478bd9Sstevel@tonic-gate t->zsd_shutdown = zsdp->zsd_shutdown; 7137c478bd9Sstevel@tonic-gate t->zsd_destroy = zsdp->zsd_destroy; 7147c478bd9Sstevel@tonic-gate list_insert_tail(&zone->zone_zsd, t); 7157c478bd9Sstevel@tonic-gate } 7167c478bd9Sstevel@tonic-gate } 7177c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 7187c478bd9Sstevel@tonic-gate } 7197c478bd9Sstevel@tonic-gate 7207c478bd9Sstevel@tonic-gate enum zsd_callback_type { ZSD_CREATE, ZSD_SHUTDOWN, ZSD_DESTROY }; 7217c478bd9Sstevel@tonic-gate 7227c478bd9Sstevel@tonic-gate /* 7237c478bd9Sstevel@tonic-gate * Helper function to execute shutdown or destructor callbacks. 7247c478bd9Sstevel@tonic-gate */ 7257c478bd9Sstevel@tonic-gate static void 7267c478bd9Sstevel@tonic-gate zone_zsd_callbacks(zone_t *zone, enum zsd_callback_type ct) 7277c478bd9Sstevel@tonic-gate { 7287c478bd9Sstevel@tonic-gate struct zsd_entry *zsdp; 7297c478bd9Sstevel@tonic-gate struct zsd_entry *t; 7307c478bd9Sstevel@tonic-gate zoneid_t zoneid = zone->zone_id; 7317c478bd9Sstevel@tonic-gate 7327c478bd9Sstevel@tonic-gate ASSERT(ct == ZSD_SHUTDOWN || ct == ZSD_DESTROY); 7337c478bd9Sstevel@tonic-gate ASSERT(ct != ZSD_SHUTDOWN || zone_status_get(zone) >= ZONE_IS_EMPTY); 7347c478bd9Sstevel@tonic-gate ASSERT(ct != ZSD_DESTROY || zone_status_get(zone) >= ZONE_IS_DOWN); 7357c478bd9Sstevel@tonic-gate 7367c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 7377c478bd9Sstevel@tonic-gate if (ct == ZSD_DESTROY) { 7387c478bd9Sstevel@tonic-gate if (zone->zone_flags & ZF_DESTROYED) { 7397c478bd9Sstevel@tonic-gate /* 7407c478bd9Sstevel@tonic-gate * Make sure destructors are only called once. 7417c478bd9Sstevel@tonic-gate */ 7427c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 7437c478bd9Sstevel@tonic-gate return; 7447c478bd9Sstevel@tonic-gate } 7457c478bd9Sstevel@tonic-gate zone->zone_flags |= ZF_DESTROYED; 7467c478bd9Sstevel@tonic-gate } 7477c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 7487c478bd9Sstevel@tonic-gate 7497c478bd9Sstevel@tonic-gate /* 7507c478bd9Sstevel@tonic-gate * Both zsd_key_lock and zone_lock need to be held in order to add or 7517c478bd9Sstevel@tonic-gate * remove a ZSD key, (either globally as part of 7527c478bd9Sstevel@tonic-gate * zone_key_create()/zone_key_delete(), or on a per-zone basis, as is 7537c478bd9Sstevel@tonic-gate * possible through zone_setspecific()), so it's sufficient to hold 7547c478bd9Sstevel@tonic-gate * zsd_key_lock here. 7557c478bd9Sstevel@tonic-gate * 7567c478bd9Sstevel@tonic-gate * This is a good thing, since we don't want to recursively try to grab 7577c478bd9Sstevel@tonic-gate * zone_lock if a callback attempts to do something like a crfree() or 7587c478bd9Sstevel@tonic-gate * zone_rele(). 7597c478bd9Sstevel@tonic-gate */ 7607c478bd9Sstevel@tonic-gate mutex_enter(&zsd_key_lock); 7617c478bd9Sstevel@tonic-gate for (zsdp = list_head(&zsd_registered_keys); zsdp != NULL; 7627c478bd9Sstevel@tonic-gate zsdp = list_next(&zsd_registered_keys, zsdp)) { 7637c478bd9Sstevel@tonic-gate zone_key_t key = zsdp->zsd_key; 7647c478bd9Sstevel@tonic-gate 7657c478bd9Sstevel@tonic-gate /* Skip if no callbacks registered */ 7667c478bd9Sstevel@tonic-gate if (ct == ZSD_SHUTDOWN && zsdp->zsd_shutdown == NULL) 7677c478bd9Sstevel@tonic-gate continue; 7687c478bd9Sstevel@tonic-gate if (ct == ZSD_DESTROY && zsdp->zsd_destroy == NULL) 7697c478bd9Sstevel@tonic-gate continue; 7707c478bd9Sstevel@tonic-gate /* 7717c478bd9Sstevel@tonic-gate * Call the callback with the zone-specific data if we can find 7727c478bd9Sstevel@tonic-gate * any, otherwise with NULL. 7737c478bd9Sstevel@tonic-gate */ 7747c478bd9Sstevel@tonic-gate t = zsd_find(&zone->zone_zsd, key); 7757c478bd9Sstevel@tonic-gate if (t != NULL) { 7767c478bd9Sstevel@tonic-gate if (ct == ZSD_SHUTDOWN) { 7777c478bd9Sstevel@tonic-gate t->zsd_shutdown(zoneid, t->zsd_data); 7787c478bd9Sstevel@tonic-gate } else { 7797c478bd9Sstevel@tonic-gate ASSERT(ct == ZSD_DESTROY); 7807c478bd9Sstevel@tonic-gate t->zsd_destroy(zoneid, t->zsd_data); 7817c478bd9Sstevel@tonic-gate } 7827c478bd9Sstevel@tonic-gate } else { 7837c478bd9Sstevel@tonic-gate if (ct == ZSD_SHUTDOWN) { 7847c478bd9Sstevel@tonic-gate zsdp->zsd_shutdown(zoneid, NULL); 7857c478bd9Sstevel@tonic-gate } else { 7867c478bd9Sstevel@tonic-gate ASSERT(ct == ZSD_DESTROY); 7877c478bd9Sstevel@tonic-gate zsdp->zsd_destroy(zoneid, NULL); 7887c478bd9Sstevel@tonic-gate } 7897c478bd9Sstevel@tonic-gate } 7907c478bd9Sstevel@tonic-gate } 7917c478bd9Sstevel@tonic-gate mutex_exit(&zsd_key_lock); 7927c478bd9Sstevel@tonic-gate } 7937c478bd9Sstevel@tonic-gate 7947c478bd9Sstevel@tonic-gate /* 7957c478bd9Sstevel@tonic-gate * Called when the zone is going away; free ZSD-related memory, and 7967c478bd9Sstevel@tonic-gate * destroy the zone_zsd list. 7977c478bd9Sstevel@tonic-gate */ 7987c478bd9Sstevel@tonic-gate static void 7997c478bd9Sstevel@tonic-gate zone_free_zsd(zone_t *zone) 8007c478bd9Sstevel@tonic-gate { 8017c478bd9Sstevel@tonic-gate struct zsd_entry *t, *next; 8027c478bd9Sstevel@tonic-gate 8037c478bd9Sstevel@tonic-gate /* 8047c478bd9Sstevel@tonic-gate * Free all the zsd_entry's we had on this zone. 8057c478bd9Sstevel@tonic-gate */ 8067c478bd9Sstevel@tonic-gate for (t = list_head(&zone->zone_zsd); t != NULL; t = next) { 8077c478bd9Sstevel@tonic-gate next = list_next(&zone->zone_zsd, t); 8087c478bd9Sstevel@tonic-gate list_remove(&zone->zone_zsd, t); 8097c478bd9Sstevel@tonic-gate kmem_free(t, sizeof (*t)); 8107c478bd9Sstevel@tonic-gate } 8117c478bd9Sstevel@tonic-gate list_destroy(&zone->zone_zsd); 8127c478bd9Sstevel@tonic-gate } 8137c478bd9Sstevel@tonic-gate 814fa9e4066Sahrens /* 815fa9e4066Sahrens * Frees memory associated with the zone dataset list. 816fa9e4066Sahrens */ 817fa9e4066Sahrens static void 818fa9e4066Sahrens zone_free_datasets(zone_t *zone) 819fa9e4066Sahrens { 820fa9e4066Sahrens zone_dataset_t *t, *next; 821fa9e4066Sahrens 822fa9e4066Sahrens for (t = list_head(&zone->zone_datasets); t != NULL; t = next) { 823fa9e4066Sahrens next = list_next(&zone->zone_datasets, t); 824fa9e4066Sahrens list_remove(&zone->zone_datasets, t); 825fa9e4066Sahrens kmem_free(t->zd_dataset, strlen(t->zd_dataset) + 1); 826fa9e4066Sahrens kmem_free(t, sizeof (*t)); 827fa9e4066Sahrens } 828fa9e4066Sahrens list_destroy(&zone->zone_datasets); 829fa9e4066Sahrens } 830fa9e4066Sahrens 8317c478bd9Sstevel@tonic-gate /* 8327c478bd9Sstevel@tonic-gate * zone.cpu-shares resource control support. 8337c478bd9Sstevel@tonic-gate */ 8347c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8357c478bd9Sstevel@tonic-gate static rctl_qty_t 8367c478bd9Sstevel@tonic-gate zone_cpu_shares_usage(rctl_t *rctl, struct proc *p) 8377c478bd9Sstevel@tonic-gate { 8387c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8397c478bd9Sstevel@tonic-gate return (p->p_zone->zone_shares); 8407c478bd9Sstevel@tonic-gate } 8417c478bd9Sstevel@tonic-gate 8427c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8437c478bd9Sstevel@tonic-gate static int 8447c478bd9Sstevel@tonic-gate zone_cpu_shares_set(rctl_t *rctl, struct proc *p, rctl_entity_p_t *e, 8457c478bd9Sstevel@tonic-gate rctl_qty_t nv) 8467c478bd9Sstevel@tonic-gate { 8477c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8487c478bd9Sstevel@tonic-gate ASSERT(e->rcep_t == RCENTITY_ZONE); 8497c478bd9Sstevel@tonic-gate if (e->rcep_p.zone == NULL) 8507c478bd9Sstevel@tonic-gate return (0); 8517c478bd9Sstevel@tonic-gate 8527c478bd9Sstevel@tonic-gate e->rcep_p.zone->zone_shares = nv; 8537c478bd9Sstevel@tonic-gate return (0); 8547c478bd9Sstevel@tonic-gate } 8557c478bd9Sstevel@tonic-gate 8567c478bd9Sstevel@tonic-gate static rctl_ops_t zone_cpu_shares_ops = { 8577c478bd9Sstevel@tonic-gate rcop_no_action, 8587c478bd9Sstevel@tonic-gate zone_cpu_shares_usage, 8597c478bd9Sstevel@tonic-gate zone_cpu_shares_set, 8607c478bd9Sstevel@tonic-gate rcop_no_test 8617c478bd9Sstevel@tonic-gate }; 8627c478bd9Sstevel@tonic-gate 8637c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8647c478bd9Sstevel@tonic-gate static rctl_qty_t 8657c478bd9Sstevel@tonic-gate zone_lwps_usage(rctl_t *r, proc_t *p) 8667c478bd9Sstevel@tonic-gate { 8677c478bd9Sstevel@tonic-gate rctl_qty_t nlwps; 8687c478bd9Sstevel@tonic-gate zone_t *zone = p->p_zone; 8697c478bd9Sstevel@tonic-gate 8707c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8717c478bd9Sstevel@tonic-gate 8727c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_nlwps_lock); 8737c478bd9Sstevel@tonic-gate nlwps = zone->zone_nlwps; 8747c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_nlwps_lock); 8757c478bd9Sstevel@tonic-gate 8767c478bd9Sstevel@tonic-gate return (nlwps); 8777c478bd9Sstevel@tonic-gate } 8787c478bd9Sstevel@tonic-gate 8797c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 8807c478bd9Sstevel@tonic-gate static int 8817c478bd9Sstevel@tonic-gate zone_lwps_test(rctl_t *r, proc_t *p, rctl_entity_p_t *e, rctl_val_t *rcntl, 8827c478bd9Sstevel@tonic-gate rctl_qty_t incr, uint_t flags) 8837c478bd9Sstevel@tonic-gate { 8847c478bd9Sstevel@tonic-gate rctl_qty_t nlwps; 8857c478bd9Sstevel@tonic-gate 8867c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 8877c478bd9Sstevel@tonic-gate ASSERT(e->rcep_t == RCENTITY_ZONE); 8887c478bd9Sstevel@tonic-gate if (e->rcep_p.zone == NULL) 8897c478bd9Sstevel@tonic-gate return (0); 8907c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&(e->rcep_p.zone->zone_nlwps_lock))); 8917c478bd9Sstevel@tonic-gate nlwps = e->rcep_p.zone->zone_nlwps; 8927c478bd9Sstevel@tonic-gate 8937c478bd9Sstevel@tonic-gate if (nlwps + incr > rcntl->rcv_value) 8947c478bd9Sstevel@tonic-gate return (1); 8957c478bd9Sstevel@tonic-gate 8967c478bd9Sstevel@tonic-gate return (0); 8977c478bd9Sstevel@tonic-gate } 8987c478bd9Sstevel@tonic-gate 8997c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 9007c478bd9Sstevel@tonic-gate static int 9017c478bd9Sstevel@tonic-gate zone_lwps_set(rctl_t *rctl, struct proc *p, rctl_entity_p_t *e, rctl_qty_t nv) { 9027c478bd9Sstevel@tonic-gate 9037c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&p->p_lock)); 9047c478bd9Sstevel@tonic-gate ASSERT(e->rcep_t == RCENTITY_ZONE); 9057c478bd9Sstevel@tonic-gate if (e->rcep_p.zone == NULL) 9067c478bd9Sstevel@tonic-gate return (0); 9077c478bd9Sstevel@tonic-gate e->rcep_p.zone->zone_nlwps_ctl = nv; 9087c478bd9Sstevel@tonic-gate return (0); 9097c478bd9Sstevel@tonic-gate } 9107c478bd9Sstevel@tonic-gate 9117c478bd9Sstevel@tonic-gate static rctl_ops_t zone_lwps_ops = { 9127c478bd9Sstevel@tonic-gate rcop_no_action, 9137c478bd9Sstevel@tonic-gate zone_lwps_usage, 9147c478bd9Sstevel@tonic-gate zone_lwps_set, 9157c478bd9Sstevel@tonic-gate zone_lwps_test, 9167c478bd9Sstevel@tonic-gate }; 9177c478bd9Sstevel@tonic-gate 9187c478bd9Sstevel@tonic-gate /* 9197c478bd9Sstevel@tonic-gate * Helper function to brand the zone with a unique ID. 9207c478bd9Sstevel@tonic-gate */ 9217c478bd9Sstevel@tonic-gate static void 9227c478bd9Sstevel@tonic-gate zone_uniqid(zone_t *zone) 9237c478bd9Sstevel@tonic-gate { 9247c478bd9Sstevel@tonic-gate static uint64_t uniqid = 0; 9257c478bd9Sstevel@tonic-gate 9267c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 9277c478bd9Sstevel@tonic-gate zone->zone_uniqid = uniqid++; 9287c478bd9Sstevel@tonic-gate } 9297c478bd9Sstevel@tonic-gate 9307c478bd9Sstevel@tonic-gate /* 9317c478bd9Sstevel@tonic-gate * Returns a held pointer to the "kcred" for the specified zone. 9327c478bd9Sstevel@tonic-gate */ 9337c478bd9Sstevel@tonic-gate struct cred * 9347c478bd9Sstevel@tonic-gate zone_get_kcred(zoneid_t zoneid) 9357c478bd9Sstevel@tonic-gate { 9367c478bd9Sstevel@tonic-gate zone_t *zone; 9377c478bd9Sstevel@tonic-gate cred_t *cr; 9387c478bd9Sstevel@tonic-gate 9397c478bd9Sstevel@tonic-gate if ((zone = zone_find_by_id(zoneid)) == NULL) 9407c478bd9Sstevel@tonic-gate return (NULL); 9417c478bd9Sstevel@tonic-gate cr = zone->zone_kcred; 9427c478bd9Sstevel@tonic-gate crhold(cr); 9437c478bd9Sstevel@tonic-gate zone_rele(zone); 9447c478bd9Sstevel@tonic-gate return (cr); 9457c478bd9Sstevel@tonic-gate } 9467c478bd9Sstevel@tonic-gate 9477c478bd9Sstevel@tonic-gate /* 9487c478bd9Sstevel@tonic-gate * Called very early on in boot to initialize the ZSD list so that 9497c478bd9Sstevel@tonic-gate * zone_key_create() can be called before zone_init(). It also initializes 9507c478bd9Sstevel@tonic-gate * portions of zone0 which may be used before zone_init() is called. The 9517c478bd9Sstevel@tonic-gate * variable "global_zone" will be set when zone0 is fully initialized by 9527c478bd9Sstevel@tonic-gate * zone_init(). 9537c478bd9Sstevel@tonic-gate */ 9547c478bd9Sstevel@tonic-gate void 9557c478bd9Sstevel@tonic-gate zone_zsd_init(void) 9567c478bd9Sstevel@tonic-gate { 9577c478bd9Sstevel@tonic-gate mutex_init(&zonehash_lock, NULL, MUTEX_DEFAULT, NULL); 9587c478bd9Sstevel@tonic-gate mutex_init(&zsd_key_lock, NULL, MUTEX_DEFAULT, NULL); 9597c478bd9Sstevel@tonic-gate list_create(&zsd_registered_keys, sizeof (struct zsd_entry), 9607c478bd9Sstevel@tonic-gate offsetof(struct zsd_entry, zsd_linkage)); 9617c478bd9Sstevel@tonic-gate list_create(&zone_active, sizeof (zone_t), 9627c478bd9Sstevel@tonic-gate offsetof(zone_t, zone_linkage)); 9637c478bd9Sstevel@tonic-gate list_create(&zone_deathrow, sizeof (zone_t), 9647c478bd9Sstevel@tonic-gate offsetof(zone_t, zone_linkage)); 9657c478bd9Sstevel@tonic-gate 9667c478bd9Sstevel@tonic-gate mutex_init(&zone0.zone_lock, NULL, MUTEX_DEFAULT, NULL); 9677c478bd9Sstevel@tonic-gate mutex_init(&zone0.zone_nlwps_lock, NULL, MUTEX_DEFAULT, NULL); 9687c478bd9Sstevel@tonic-gate zone0.zone_shares = 1; 9697c478bd9Sstevel@tonic-gate zone0.zone_nlwps_ctl = INT_MAX; 9707c478bd9Sstevel@tonic-gate zone0.zone_name = GLOBAL_ZONENAME; 9717c478bd9Sstevel@tonic-gate zone0.zone_nodename = utsname.nodename; 9727c478bd9Sstevel@tonic-gate zone0.zone_domain = srpc_domain; 9737c478bd9Sstevel@tonic-gate zone0.zone_ref = 1; 9747c478bd9Sstevel@tonic-gate zone0.zone_id = GLOBAL_ZONEID; 9757c478bd9Sstevel@tonic-gate zone0.zone_status = ZONE_IS_RUNNING; 9767c478bd9Sstevel@tonic-gate zone0.zone_rootpath = "/"; 9777c478bd9Sstevel@tonic-gate zone0.zone_rootpathlen = 2; 9787c478bd9Sstevel@tonic-gate zone0.zone_psetid = ZONE_PS_INVAL; 9797c478bd9Sstevel@tonic-gate zone0.zone_ncpus = 0; 9807c478bd9Sstevel@tonic-gate zone0.zone_ncpus_online = 0; 9817c478bd9Sstevel@tonic-gate zone0.zone_proc_initpid = 1; 982*3f2f09c1Sdp zone0.zone_initname = initname; 9837c478bd9Sstevel@tonic-gate list_create(&zone0.zone_zsd, sizeof (struct zsd_entry), 9847c478bd9Sstevel@tonic-gate offsetof(struct zsd_entry, zsd_linkage)); 9857c478bd9Sstevel@tonic-gate list_insert_head(&zone_active, &zone0); 9867c478bd9Sstevel@tonic-gate 9877c478bd9Sstevel@tonic-gate /* 9887c478bd9Sstevel@tonic-gate * The root filesystem is not mounted yet, so zone_rootvp cannot be set 9897c478bd9Sstevel@tonic-gate * to anything meaningful. It is assigned to be 'rootdir' in 9907c478bd9Sstevel@tonic-gate * vfs_mountroot(). 9917c478bd9Sstevel@tonic-gate */ 9927c478bd9Sstevel@tonic-gate zone0.zone_rootvp = NULL; 9937c478bd9Sstevel@tonic-gate zone0.zone_vfslist = NULL; 994*3f2f09c1Sdp zone0.zone_bootargs = initargs; 9957c478bd9Sstevel@tonic-gate zone0.zone_privset = kmem_alloc(sizeof (priv_set_t), KM_SLEEP); 9967c478bd9Sstevel@tonic-gate /* 9977c478bd9Sstevel@tonic-gate * The global zone has all privileges 9987c478bd9Sstevel@tonic-gate */ 9997c478bd9Sstevel@tonic-gate priv_fillset(zone0.zone_privset); 10007c478bd9Sstevel@tonic-gate /* 10017c478bd9Sstevel@tonic-gate * Add p0 to the global zone 10027c478bd9Sstevel@tonic-gate */ 10037c478bd9Sstevel@tonic-gate zone0.zone_zsched = &p0; 10047c478bd9Sstevel@tonic-gate p0.p_zone = &zone0; 10057c478bd9Sstevel@tonic-gate } 10067c478bd9Sstevel@tonic-gate 100745916cd2Sjpk /* 100845916cd2Sjpk * Compute a hash value based on the contents of the label and the DOI. The 100945916cd2Sjpk * hash algorithm is somewhat arbitrary, but is based on the observation that 101045916cd2Sjpk * humans will likely pick labels that differ by amounts that work out to be 101145916cd2Sjpk * multiples of the number of hash chains, and thus stirring in some primes 101245916cd2Sjpk * should help. 101345916cd2Sjpk */ 101445916cd2Sjpk static uint_t 101545916cd2Sjpk hash_bylabel(void *hdata, mod_hash_key_t key) 101645916cd2Sjpk { 101745916cd2Sjpk const ts_label_t *lab = (ts_label_t *)key; 101845916cd2Sjpk const uint32_t *up, *ue; 101945916cd2Sjpk uint_t hash; 102045916cd2Sjpk int i; 102145916cd2Sjpk 102245916cd2Sjpk _NOTE(ARGUNUSED(hdata)); 102345916cd2Sjpk 102445916cd2Sjpk hash = lab->tsl_doi + (lab->tsl_doi << 1); 102545916cd2Sjpk /* we depend on alignment of label, but not representation */ 102645916cd2Sjpk up = (const uint32_t *)&lab->tsl_label; 102745916cd2Sjpk ue = up + sizeof (lab->tsl_label) / sizeof (*up); 102845916cd2Sjpk i = 1; 102945916cd2Sjpk while (up < ue) { 103045916cd2Sjpk /* using 2^n + 1, 1 <= n <= 16 as source of many primes */ 103145916cd2Sjpk hash += *up + (*up << ((i % 16) + 1)); 103245916cd2Sjpk up++; 103345916cd2Sjpk i++; 103445916cd2Sjpk } 103545916cd2Sjpk return (hash); 103645916cd2Sjpk } 103745916cd2Sjpk 103845916cd2Sjpk /* 103945916cd2Sjpk * All that mod_hash cares about here is zero (equal) versus non-zero (not 104045916cd2Sjpk * equal). This may need to be changed if less than / greater than is ever 104145916cd2Sjpk * needed. 104245916cd2Sjpk */ 104345916cd2Sjpk static int 104445916cd2Sjpk hash_labelkey_cmp(mod_hash_key_t key1, mod_hash_key_t key2) 104545916cd2Sjpk { 104645916cd2Sjpk ts_label_t *lab1 = (ts_label_t *)key1; 104745916cd2Sjpk ts_label_t *lab2 = (ts_label_t *)key2; 104845916cd2Sjpk 104945916cd2Sjpk return (label_equal(lab1, lab2) ? 0 : 1); 105045916cd2Sjpk } 105145916cd2Sjpk 10527c478bd9Sstevel@tonic-gate /* 10537c478bd9Sstevel@tonic-gate * Called by main() to initialize the zones framework. 10547c478bd9Sstevel@tonic-gate */ 10557c478bd9Sstevel@tonic-gate void 10567c478bd9Sstevel@tonic-gate zone_init(void) 10577c478bd9Sstevel@tonic-gate { 10587c478bd9Sstevel@tonic-gate rctl_dict_entry_t *rde; 10597c478bd9Sstevel@tonic-gate rctl_val_t *dval; 10607c478bd9Sstevel@tonic-gate rctl_set_t *set; 10617c478bd9Sstevel@tonic-gate rctl_alloc_gp_t *gp; 10627c478bd9Sstevel@tonic-gate rctl_entity_p_t e; 1063cf8f45c7Sdstaff int res; 10647c478bd9Sstevel@tonic-gate 10657c478bd9Sstevel@tonic-gate ASSERT(curproc == &p0); 10667c478bd9Sstevel@tonic-gate 10677c478bd9Sstevel@tonic-gate /* 10687c478bd9Sstevel@tonic-gate * Create ID space for zone IDs. ID 0 is reserved for the 10697c478bd9Sstevel@tonic-gate * global zone. 10707c478bd9Sstevel@tonic-gate */ 10717c478bd9Sstevel@tonic-gate zoneid_space = id_space_create("zoneid_space", 1, MAX_ZONEID); 10727c478bd9Sstevel@tonic-gate 10737c478bd9Sstevel@tonic-gate /* 10747c478bd9Sstevel@tonic-gate * Initialize generic zone resource controls, if any. 10757c478bd9Sstevel@tonic-gate */ 10767c478bd9Sstevel@tonic-gate rc_zone_cpu_shares = rctl_register("zone.cpu-shares", 10777c478bd9Sstevel@tonic-gate RCENTITY_ZONE, RCTL_GLOBAL_SIGNAL_NEVER | RCTL_GLOBAL_DENY_NEVER | 107819f92332Sml RCTL_GLOBAL_NOBASIC | RCTL_GLOBAL_COUNT | RCTL_GLOBAL_SYSLOG_NEVER, 107919f92332Sml FSS_MAXSHARES, FSS_MAXSHARES, 10807c478bd9Sstevel@tonic-gate &zone_cpu_shares_ops); 10817c478bd9Sstevel@tonic-gate 10827c478bd9Sstevel@tonic-gate rc_zone_nlwps = rctl_register("zone.max-lwps", RCENTITY_ZONE, 10837c478bd9Sstevel@tonic-gate RCTL_GLOBAL_NOACTION | RCTL_GLOBAL_NOBASIC | RCTL_GLOBAL_COUNT, 10847c478bd9Sstevel@tonic-gate INT_MAX, INT_MAX, &zone_lwps_ops); 10857c478bd9Sstevel@tonic-gate /* 10867c478bd9Sstevel@tonic-gate * Create a rctl_val with PRIVILEGED, NOACTION, value = 1. Then attach 10877c478bd9Sstevel@tonic-gate * this at the head of the rctl_dict_entry for ``zone.cpu-shares''. 10887c478bd9Sstevel@tonic-gate */ 10897c478bd9Sstevel@tonic-gate dval = kmem_cache_alloc(rctl_val_cache, KM_SLEEP); 10907c478bd9Sstevel@tonic-gate bzero(dval, sizeof (rctl_val_t)); 10917c478bd9Sstevel@tonic-gate dval->rcv_value = 1; 10927c478bd9Sstevel@tonic-gate dval->rcv_privilege = RCPRIV_PRIVILEGED; 10937c478bd9Sstevel@tonic-gate dval->rcv_flagaction = RCTL_LOCAL_NOACTION; 10947c478bd9Sstevel@tonic-gate dval->rcv_action_recip_pid = -1; 10957c478bd9Sstevel@tonic-gate 10967c478bd9Sstevel@tonic-gate rde = rctl_dict_lookup("zone.cpu-shares"); 10977c478bd9Sstevel@tonic-gate (void) rctl_val_list_insert(&rde->rcd_default_value, dval); 10987c478bd9Sstevel@tonic-gate 10997c478bd9Sstevel@tonic-gate /* 11007c478bd9Sstevel@tonic-gate * Initialize the ``global zone''. 11017c478bd9Sstevel@tonic-gate */ 11027c478bd9Sstevel@tonic-gate set = rctl_set_create(); 11037c478bd9Sstevel@tonic-gate gp = rctl_set_init_prealloc(RCENTITY_ZONE); 11047c478bd9Sstevel@tonic-gate mutex_enter(&p0.p_lock); 11057c478bd9Sstevel@tonic-gate e.rcep_p.zone = &zone0; 11067c478bd9Sstevel@tonic-gate e.rcep_t = RCENTITY_ZONE; 11077c478bd9Sstevel@tonic-gate zone0.zone_rctls = rctl_set_init(RCENTITY_ZONE, &p0, &e, set, 11087c478bd9Sstevel@tonic-gate gp); 11097c478bd9Sstevel@tonic-gate 11107c478bd9Sstevel@tonic-gate zone0.zone_nlwps = p0.p_lwpcnt; 11117c478bd9Sstevel@tonic-gate zone0.zone_ntasks = 1; 11127c478bd9Sstevel@tonic-gate mutex_exit(&p0.p_lock); 11137c478bd9Sstevel@tonic-gate rctl_prealloc_destroy(gp); 11147c478bd9Sstevel@tonic-gate /* 11157c478bd9Sstevel@tonic-gate * pool_default hasn't been initialized yet, so we let pool_init() take 11167c478bd9Sstevel@tonic-gate * care of making the global zone is in the default pool. 11177c478bd9Sstevel@tonic-gate */ 111845916cd2Sjpk 111945916cd2Sjpk /* 112045916cd2Sjpk * Initialize zone label. 112145916cd2Sjpk * mlp are initialized when tnzonecfg is loaded. 112245916cd2Sjpk */ 112345916cd2Sjpk zone0.zone_slabel = l_admin_low; 112445916cd2Sjpk rw_init(&zone0.zone_mlps.mlpl_rwlock, NULL, RW_DEFAULT, NULL); 112545916cd2Sjpk label_hold(l_admin_low); 112645916cd2Sjpk 11277c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 11287c478bd9Sstevel@tonic-gate zone_uniqid(&zone0); 11297c478bd9Sstevel@tonic-gate ASSERT(zone0.zone_uniqid == GLOBAL_ZONEUNIQID); 113045916cd2Sjpk 11317c478bd9Sstevel@tonic-gate zonehashbyid = mod_hash_create_idhash("zone_by_id", zone_hash_size, 11327c478bd9Sstevel@tonic-gate mod_hash_null_valdtor); 11337c478bd9Sstevel@tonic-gate zonehashbyname = mod_hash_create_strhash("zone_by_name", 11347c478bd9Sstevel@tonic-gate zone_hash_size, mod_hash_null_valdtor); 113545916cd2Sjpk /* 113645916cd2Sjpk * maintain zonehashbylabel only for labeled systems 113745916cd2Sjpk */ 113845916cd2Sjpk if (is_system_labeled()) 113945916cd2Sjpk zonehashbylabel = mod_hash_create_extended("zone_by_label", 114045916cd2Sjpk zone_hash_size, mod_hash_null_keydtor, 114145916cd2Sjpk mod_hash_null_valdtor, hash_bylabel, NULL, 114245916cd2Sjpk hash_labelkey_cmp, KM_SLEEP); 11437c478bd9Sstevel@tonic-gate zonecount = 1; 11447c478bd9Sstevel@tonic-gate 11457c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyid, (mod_hash_key_t)GLOBAL_ZONEID, 11467c478bd9Sstevel@tonic-gate (mod_hash_val_t)&zone0); 11477c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyname, (mod_hash_key_t)zone0.zone_name, 11487c478bd9Sstevel@tonic-gate (mod_hash_val_t)&zone0); 114948451833Scarlsonj if (is_system_labeled()) { 115048451833Scarlsonj zone0.zone_flags |= ZF_HASHED_LABEL; 115145916cd2Sjpk (void) mod_hash_insert(zonehashbylabel, 115245916cd2Sjpk (mod_hash_key_t)zone0.zone_slabel, (mod_hash_val_t)&zone0); 115348451833Scarlsonj } 115445916cd2Sjpk mutex_exit(&zonehash_lock); 115545916cd2Sjpk 11567c478bd9Sstevel@tonic-gate /* 11577c478bd9Sstevel@tonic-gate * We avoid setting zone_kcred until now, since kcred is initialized 11587c478bd9Sstevel@tonic-gate * sometime after zone_zsd_init() and before zone_init(). 11597c478bd9Sstevel@tonic-gate */ 11607c478bd9Sstevel@tonic-gate zone0.zone_kcred = kcred; 11617c478bd9Sstevel@tonic-gate /* 11627c478bd9Sstevel@tonic-gate * The global zone is fully initialized (except for zone_rootvp which 11637c478bd9Sstevel@tonic-gate * will be set when the root filesystem is mounted). 11647c478bd9Sstevel@tonic-gate */ 11657c478bd9Sstevel@tonic-gate global_zone = &zone0; 1166cf8f45c7Sdstaff 1167cf8f45c7Sdstaff /* 1168cf8f45c7Sdstaff * Setup an event channel to send zone status change notifications on 1169cf8f45c7Sdstaff */ 1170cf8f45c7Sdstaff res = sysevent_evc_bind(ZONE_EVENT_CHANNEL, &zone_event_chan, 1171cf8f45c7Sdstaff EVCH_CREAT); 1172cf8f45c7Sdstaff 1173cf8f45c7Sdstaff if (res) 1174cf8f45c7Sdstaff panic("Sysevent_evc_bind failed during zone setup.\n"); 11757c478bd9Sstevel@tonic-gate } 11767c478bd9Sstevel@tonic-gate 11777c478bd9Sstevel@tonic-gate static void 11787c478bd9Sstevel@tonic-gate zone_free(zone_t *zone) 11797c478bd9Sstevel@tonic-gate { 11807c478bd9Sstevel@tonic-gate ASSERT(zone != global_zone); 11817c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ntasks == 0); 11827c478bd9Sstevel@tonic-gate ASSERT(zone->zone_nlwps == 0); 11837c478bd9Sstevel@tonic-gate ASSERT(zone->zone_cred_ref == 0); 11847c478bd9Sstevel@tonic-gate ASSERT(zone->zone_kcred == NULL); 11857c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) == ZONE_IS_DEAD || 11867c478bd9Sstevel@tonic-gate zone_status_get(zone) == ZONE_IS_UNINITIALIZED); 11877c478bd9Sstevel@tonic-gate 11887c478bd9Sstevel@tonic-gate /* remove from deathrow list */ 11897c478bd9Sstevel@tonic-gate if (zone_status_get(zone) == ZONE_IS_DEAD) { 11907c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ref == 0); 11917c478bd9Sstevel@tonic-gate mutex_enter(&zone_deathrow_lock); 11927c478bd9Sstevel@tonic-gate list_remove(&zone_deathrow, zone); 11937c478bd9Sstevel@tonic-gate mutex_exit(&zone_deathrow_lock); 11947c478bd9Sstevel@tonic-gate } 11957c478bd9Sstevel@tonic-gate 11967c478bd9Sstevel@tonic-gate zone_free_zsd(zone); 1197fa9e4066Sahrens zone_free_datasets(zone); 11987c478bd9Sstevel@tonic-gate 11997c478bd9Sstevel@tonic-gate if (zone->zone_rootvp != NULL) 12007c478bd9Sstevel@tonic-gate VN_RELE(zone->zone_rootvp); 12017c478bd9Sstevel@tonic-gate if (zone->zone_rootpath) 12027c478bd9Sstevel@tonic-gate kmem_free(zone->zone_rootpath, zone->zone_rootpathlen); 12037c478bd9Sstevel@tonic-gate if (zone->zone_name != NULL) 12047c478bd9Sstevel@tonic-gate kmem_free(zone->zone_name, ZONENAME_MAX); 120545916cd2Sjpk if (zone->zone_slabel != NULL) 120645916cd2Sjpk label_rele(zone->zone_slabel); 12077c478bd9Sstevel@tonic-gate if (zone->zone_nodename != NULL) 12087c478bd9Sstevel@tonic-gate kmem_free(zone->zone_nodename, _SYS_NMLN); 12097c478bd9Sstevel@tonic-gate if (zone->zone_domain != NULL) 12107c478bd9Sstevel@tonic-gate kmem_free(zone->zone_domain, _SYS_NMLN); 12117c478bd9Sstevel@tonic-gate if (zone->zone_privset != NULL) 12127c478bd9Sstevel@tonic-gate kmem_free(zone->zone_privset, sizeof (priv_set_t)); 12137c478bd9Sstevel@tonic-gate if (zone->zone_rctls != NULL) 12147c478bd9Sstevel@tonic-gate rctl_set_free(zone->zone_rctls); 12157c478bd9Sstevel@tonic-gate if (zone->zone_bootargs != NULL) 1216*3f2f09c1Sdp kmem_free(zone->zone_bootargs, strlen(zone->zone_bootargs) + 1); 1217*3f2f09c1Sdp if (zone->zone_initname != NULL) 1218*3f2f09c1Sdp kmem_free(zone->zone_initname, strlen(zone->zone_initname) + 1); 12197c478bd9Sstevel@tonic-gate id_free(zoneid_space, zone->zone_id); 12207c478bd9Sstevel@tonic-gate mutex_destroy(&zone->zone_lock); 12217c478bd9Sstevel@tonic-gate cv_destroy(&zone->zone_cv); 122245916cd2Sjpk rw_destroy(&zone->zone_mlps.mlpl_rwlock); 12237c478bd9Sstevel@tonic-gate kmem_free(zone, sizeof (zone_t)); 12247c478bd9Sstevel@tonic-gate } 12257c478bd9Sstevel@tonic-gate 12267c478bd9Sstevel@tonic-gate /* 12277c478bd9Sstevel@tonic-gate * See block comment at the top of this file for information about zone 12287c478bd9Sstevel@tonic-gate * status values. 12297c478bd9Sstevel@tonic-gate */ 12307c478bd9Sstevel@tonic-gate /* 12317c478bd9Sstevel@tonic-gate * Convenience function for setting zone status. 12327c478bd9Sstevel@tonic-gate */ 12337c478bd9Sstevel@tonic-gate static void 12347c478bd9Sstevel@tonic-gate zone_status_set(zone_t *zone, zone_status_t status) 12357c478bd9Sstevel@tonic-gate { 1236cf8f45c7Sdstaff 1237cf8f45c7Sdstaff nvlist_t *nvl = NULL; 12387c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zone_status_lock)); 12397c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE && 12407c478bd9Sstevel@tonic-gate status >= zone_status_get(zone)); 1241cf8f45c7Sdstaff 1242cf8f45c7Sdstaff if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP) || 1243cf8f45c7Sdstaff nvlist_add_string(nvl, ZONE_CB_NAME, zone->zone_name) || 1244cf8f45c7Sdstaff nvlist_add_string(nvl, ZONE_CB_NEWSTATE, 1245*3f2f09c1Sdp zone_status_table[status]) || 1246cf8f45c7Sdstaff nvlist_add_string(nvl, ZONE_CB_OLDSTATE, 1247*3f2f09c1Sdp zone_status_table[zone->zone_status]) || 1248cf8f45c7Sdstaff nvlist_add_int32(nvl, ZONE_CB_ZONEID, zone->zone_id) || 1249cf8f45c7Sdstaff nvlist_add_uint64(nvl, ZONE_CB_TIMESTAMP, (uint64_t)gethrtime()) || 1250cf8f45c7Sdstaff sysevent_evc_publish(zone_event_chan, ZONE_EVENT_STATUS_CLASS, 1251*3f2f09c1Sdp ZONE_EVENT_STATUS_SUBCLASS, "sun.com", "kernel", nvl, EVCH_SLEEP)) { 1252cf8f45c7Sdstaff #ifdef DEBUG 1253cf8f45c7Sdstaff (void) printf( 1254cf8f45c7Sdstaff "Failed to allocate and send zone state change event.\n"); 1255cf8f45c7Sdstaff #endif 1256cf8f45c7Sdstaff } 1257cf8f45c7Sdstaff nvlist_free(nvl); 1258cf8f45c7Sdstaff 12597c478bd9Sstevel@tonic-gate zone->zone_status = status; 1260cf8f45c7Sdstaff 12617c478bd9Sstevel@tonic-gate cv_broadcast(&zone->zone_cv); 12627c478bd9Sstevel@tonic-gate } 12637c478bd9Sstevel@tonic-gate 12647c478bd9Sstevel@tonic-gate /* 12657c478bd9Sstevel@tonic-gate * Public function to retrieve the zone status. The zone status may 12667c478bd9Sstevel@tonic-gate * change after it is retrieved. 12677c478bd9Sstevel@tonic-gate */ 12687c478bd9Sstevel@tonic-gate zone_status_t 12697c478bd9Sstevel@tonic-gate zone_status_get(zone_t *zone) 12707c478bd9Sstevel@tonic-gate { 12717c478bd9Sstevel@tonic-gate return (zone->zone_status); 12727c478bd9Sstevel@tonic-gate } 12737c478bd9Sstevel@tonic-gate 12747c478bd9Sstevel@tonic-gate static int 12757c478bd9Sstevel@tonic-gate zone_set_bootargs(zone_t *zone, const char *zone_bootargs) 12767c478bd9Sstevel@tonic-gate { 1277*3f2f09c1Sdp char *bootargs = kmem_zalloc(BOOTARGS_MAX, KM_SLEEP); 1278*3f2f09c1Sdp int err = 0; 1279*3f2f09c1Sdp 1280*3f2f09c1Sdp ASSERT(zone != global_zone); 1281*3f2f09c1Sdp if ((err = copyinstr(zone_bootargs, bootargs, BOOTARGS_MAX, NULL)) != 0) 1282*3f2f09c1Sdp goto done; /* EFAULT or ENAMETOOLONG */ 1283*3f2f09c1Sdp 1284*3f2f09c1Sdp if (zone->zone_bootargs != NULL) 1285*3f2f09c1Sdp kmem_free(zone->zone_bootargs, strlen(zone->zone_bootargs) + 1); 1286*3f2f09c1Sdp 1287*3f2f09c1Sdp zone->zone_bootargs = kmem_alloc(strlen(bootargs) + 1, KM_SLEEP); 1288*3f2f09c1Sdp (void) strcpy(zone->zone_bootargs, bootargs); 1289*3f2f09c1Sdp 1290*3f2f09c1Sdp done: 1291*3f2f09c1Sdp kmem_free(bootargs, BOOTARGS_MAX); 1292*3f2f09c1Sdp return (err); 1293*3f2f09c1Sdp } 1294*3f2f09c1Sdp 1295*3f2f09c1Sdp static int 1296*3f2f09c1Sdp zone_set_initname(zone_t *zone, const char *zone_initname) 1297*3f2f09c1Sdp { 1298*3f2f09c1Sdp char initname[INITNAME_SZ]; 12997c478bd9Sstevel@tonic-gate size_t len; 1300*3f2f09c1Sdp int err = 0; 13017c478bd9Sstevel@tonic-gate 1302*3f2f09c1Sdp ASSERT(zone != global_zone); 1303*3f2f09c1Sdp if ((err = copyinstr(zone_initname, initname, INITNAME_SZ, &len)) != 0) 13047c478bd9Sstevel@tonic-gate return (err); /* EFAULT or ENAMETOOLONG */ 13057c478bd9Sstevel@tonic-gate 1306*3f2f09c1Sdp if (zone->zone_initname != NULL) 1307*3f2f09c1Sdp kmem_free(zone->zone_initname, strlen(zone->zone_initname) + 1); 1308*3f2f09c1Sdp 1309*3f2f09c1Sdp zone->zone_initname = kmem_alloc(strlen(initname) + 1, KM_SLEEP); 1310*3f2f09c1Sdp (void) strcpy(zone->zone_initname, initname); 13117c478bd9Sstevel@tonic-gate return (0); 13127c478bd9Sstevel@tonic-gate } 13137c478bd9Sstevel@tonic-gate 13147c478bd9Sstevel@tonic-gate /* 13157c478bd9Sstevel@tonic-gate * Block indefinitely waiting for (zone_status >= status) 13167c478bd9Sstevel@tonic-gate */ 13177c478bd9Sstevel@tonic-gate void 13187c478bd9Sstevel@tonic-gate zone_status_wait(zone_t *zone, zone_status_t status) 13197c478bd9Sstevel@tonic-gate { 13207c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 13217c478bd9Sstevel@tonic-gate 13227c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 13237c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 13247c478bd9Sstevel@tonic-gate cv_wait(&zone->zone_cv, &zone_status_lock); 13257c478bd9Sstevel@tonic-gate } 13267c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 13277c478bd9Sstevel@tonic-gate } 13287c478bd9Sstevel@tonic-gate 13297c478bd9Sstevel@tonic-gate /* 13307c478bd9Sstevel@tonic-gate * Private CPR-safe version of zone_status_wait(). 13317c478bd9Sstevel@tonic-gate */ 13327c478bd9Sstevel@tonic-gate static void 13337c478bd9Sstevel@tonic-gate zone_status_wait_cpr(zone_t *zone, zone_status_t status, char *str) 13347c478bd9Sstevel@tonic-gate { 13357c478bd9Sstevel@tonic-gate callb_cpr_t cprinfo; 13367c478bd9Sstevel@tonic-gate 13377c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 13387c478bd9Sstevel@tonic-gate 13397c478bd9Sstevel@tonic-gate CALLB_CPR_INIT(&cprinfo, &zone_status_lock, callb_generic_cpr, 13407c478bd9Sstevel@tonic-gate str); 13417c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 13427c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 13437c478bd9Sstevel@tonic-gate CALLB_CPR_SAFE_BEGIN(&cprinfo); 13447c478bd9Sstevel@tonic-gate cv_wait(&zone->zone_cv, &zone_status_lock); 13457c478bd9Sstevel@tonic-gate CALLB_CPR_SAFE_END(&cprinfo, &zone_status_lock); 13467c478bd9Sstevel@tonic-gate } 13477c478bd9Sstevel@tonic-gate /* 13487c478bd9Sstevel@tonic-gate * zone_status_lock is implicitly released by the following. 13497c478bd9Sstevel@tonic-gate */ 13507c478bd9Sstevel@tonic-gate CALLB_CPR_EXIT(&cprinfo); 13517c478bd9Sstevel@tonic-gate } 13527c478bd9Sstevel@tonic-gate 13537c478bd9Sstevel@tonic-gate /* 13547c478bd9Sstevel@tonic-gate * Block until zone enters requested state or signal is received. Return (0) 13557c478bd9Sstevel@tonic-gate * if signaled, non-zero otherwise. 13567c478bd9Sstevel@tonic-gate */ 13577c478bd9Sstevel@tonic-gate int 13587c478bd9Sstevel@tonic-gate zone_status_wait_sig(zone_t *zone, zone_status_t status) 13597c478bd9Sstevel@tonic-gate { 13607c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 13617c478bd9Sstevel@tonic-gate 13627c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 13637c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 13647c478bd9Sstevel@tonic-gate if (!cv_wait_sig(&zone->zone_cv, &zone_status_lock)) { 13657c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 13667c478bd9Sstevel@tonic-gate return (0); 13677c478bd9Sstevel@tonic-gate } 13687c478bd9Sstevel@tonic-gate } 13697c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 13707c478bd9Sstevel@tonic-gate return (1); 13717c478bd9Sstevel@tonic-gate } 13727c478bd9Sstevel@tonic-gate 13737c478bd9Sstevel@tonic-gate /* 13747c478bd9Sstevel@tonic-gate * Block until the zone enters the requested state or the timeout expires, 13757c478bd9Sstevel@tonic-gate * whichever happens first. Return (-1) if operation timed out, time remaining 13767c478bd9Sstevel@tonic-gate * otherwise. 13777c478bd9Sstevel@tonic-gate */ 13787c478bd9Sstevel@tonic-gate clock_t 13797c478bd9Sstevel@tonic-gate zone_status_timedwait(zone_t *zone, clock_t tim, zone_status_t status) 13807c478bd9Sstevel@tonic-gate { 13817c478bd9Sstevel@tonic-gate clock_t timeleft = 0; 13827c478bd9Sstevel@tonic-gate 13837c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 13847c478bd9Sstevel@tonic-gate 13857c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 13867c478bd9Sstevel@tonic-gate while (zone->zone_status < status && timeleft != -1) { 13877c478bd9Sstevel@tonic-gate timeleft = cv_timedwait(&zone->zone_cv, &zone_status_lock, tim); 13887c478bd9Sstevel@tonic-gate } 13897c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 13907c478bd9Sstevel@tonic-gate return (timeleft); 13917c478bd9Sstevel@tonic-gate } 13927c478bd9Sstevel@tonic-gate 13937c478bd9Sstevel@tonic-gate /* 13947c478bd9Sstevel@tonic-gate * Block until the zone enters the requested state, the current process is 13957c478bd9Sstevel@tonic-gate * signaled, or the timeout expires, whichever happens first. Return (-1) if 13967c478bd9Sstevel@tonic-gate * operation timed out, 0 if signaled, time remaining otherwise. 13977c478bd9Sstevel@tonic-gate */ 13987c478bd9Sstevel@tonic-gate clock_t 13997c478bd9Sstevel@tonic-gate zone_status_timedwait_sig(zone_t *zone, clock_t tim, zone_status_t status) 14007c478bd9Sstevel@tonic-gate { 14017c478bd9Sstevel@tonic-gate clock_t timeleft = tim - lbolt; 14027c478bd9Sstevel@tonic-gate 14037c478bd9Sstevel@tonic-gate ASSERT(status > ZONE_MIN_STATE && status <= ZONE_MAX_STATE); 14047c478bd9Sstevel@tonic-gate 14057c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 14067c478bd9Sstevel@tonic-gate while (zone->zone_status < status) { 14077c478bd9Sstevel@tonic-gate timeleft = cv_timedwait_sig(&zone->zone_cv, &zone_status_lock, 14087c478bd9Sstevel@tonic-gate tim); 14097c478bd9Sstevel@tonic-gate if (timeleft <= 0) 14107c478bd9Sstevel@tonic-gate break; 14117c478bd9Sstevel@tonic-gate } 14127c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 14137c478bd9Sstevel@tonic-gate return (timeleft); 14147c478bd9Sstevel@tonic-gate } 14157c478bd9Sstevel@tonic-gate 14167c478bd9Sstevel@tonic-gate /* 14177c478bd9Sstevel@tonic-gate * Zones have two reference counts: one for references from credential 14187c478bd9Sstevel@tonic-gate * structures (zone_cred_ref), and one (zone_ref) for everything else. 14197c478bd9Sstevel@tonic-gate * This is so we can allow a zone to be rebooted while there are still 14207c478bd9Sstevel@tonic-gate * outstanding cred references, since certain drivers cache dblks (which 14217c478bd9Sstevel@tonic-gate * implicitly results in cached creds). We wait for zone_ref to drop to 14227c478bd9Sstevel@tonic-gate * 0 (actually 1), but not zone_cred_ref. The zone structure itself is 14237c478bd9Sstevel@tonic-gate * later freed when the zone_cred_ref drops to 0, though nothing other 14247c478bd9Sstevel@tonic-gate * than the zone id and privilege set should be accessed once the zone 14257c478bd9Sstevel@tonic-gate * is "dead". 14267c478bd9Sstevel@tonic-gate * 14277c478bd9Sstevel@tonic-gate * A debugging flag, zone_wait_for_cred, can be set to a non-zero value 14287c478bd9Sstevel@tonic-gate * to force halt/reboot to block waiting for the zone_cred_ref to drop 14297c478bd9Sstevel@tonic-gate * to 0. This can be useful to flush out other sources of cached creds 14307c478bd9Sstevel@tonic-gate * that may be less innocuous than the driver case. 14317c478bd9Sstevel@tonic-gate */ 14327c478bd9Sstevel@tonic-gate 14337c478bd9Sstevel@tonic-gate int zone_wait_for_cred = 0; 14347c478bd9Sstevel@tonic-gate 14357c478bd9Sstevel@tonic-gate static void 14367c478bd9Sstevel@tonic-gate zone_hold_locked(zone_t *z) 14377c478bd9Sstevel@tonic-gate { 14387c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&z->zone_lock)); 14397c478bd9Sstevel@tonic-gate z->zone_ref++; 14407c478bd9Sstevel@tonic-gate ASSERT(z->zone_ref != 0); 14417c478bd9Sstevel@tonic-gate } 14427c478bd9Sstevel@tonic-gate 14437c478bd9Sstevel@tonic-gate void 14447c478bd9Sstevel@tonic-gate zone_hold(zone_t *z) 14457c478bd9Sstevel@tonic-gate { 14467c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 14477c478bd9Sstevel@tonic-gate zone_hold_locked(z); 14487c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 14497c478bd9Sstevel@tonic-gate } 14507c478bd9Sstevel@tonic-gate 14517c478bd9Sstevel@tonic-gate /* 14527c478bd9Sstevel@tonic-gate * If the non-cred ref count drops to 1 and either the cred ref count 14537c478bd9Sstevel@tonic-gate * is 0 or we aren't waiting for cred references, the zone is ready to 14547c478bd9Sstevel@tonic-gate * be destroyed. 14557c478bd9Sstevel@tonic-gate */ 14567c478bd9Sstevel@tonic-gate #define ZONE_IS_UNREF(zone) ((zone)->zone_ref == 1 && \ 14577c478bd9Sstevel@tonic-gate (!zone_wait_for_cred || (zone)->zone_cred_ref == 0)) 14587c478bd9Sstevel@tonic-gate 14597c478bd9Sstevel@tonic-gate void 14607c478bd9Sstevel@tonic-gate zone_rele(zone_t *z) 14617c478bd9Sstevel@tonic-gate { 14627c478bd9Sstevel@tonic-gate boolean_t wakeup; 14637c478bd9Sstevel@tonic-gate 14647c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 14657c478bd9Sstevel@tonic-gate ASSERT(z->zone_ref != 0); 14667c478bd9Sstevel@tonic-gate z->zone_ref--; 14677c478bd9Sstevel@tonic-gate if (z->zone_ref == 0 && z->zone_cred_ref == 0) { 14687c478bd9Sstevel@tonic-gate /* no more refs, free the structure */ 14697c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 14707c478bd9Sstevel@tonic-gate zone_free(z); 14717c478bd9Sstevel@tonic-gate return; 14727c478bd9Sstevel@tonic-gate } 14737c478bd9Sstevel@tonic-gate /* signal zone_destroy so the zone can finish halting */ 14747c478bd9Sstevel@tonic-gate wakeup = (ZONE_IS_UNREF(z) && zone_status_get(z) >= ZONE_IS_DEAD); 14757c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 14767c478bd9Sstevel@tonic-gate 14777c478bd9Sstevel@tonic-gate if (wakeup) { 14787c478bd9Sstevel@tonic-gate /* 14797c478bd9Sstevel@tonic-gate * Grabbing zonehash_lock here effectively synchronizes with 14807c478bd9Sstevel@tonic-gate * zone_destroy() to avoid missed signals. 14817c478bd9Sstevel@tonic-gate */ 14827c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 14837c478bd9Sstevel@tonic-gate cv_broadcast(&zone_destroy_cv); 14847c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 14857c478bd9Sstevel@tonic-gate } 14867c478bd9Sstevel@tonic-gate } 14877c478bd9Sstevel@tonic-gate 14887c478bd9Sstevel@tonic-gate void 14897c478bd9Sstevel@tonic-gate zone_cred_hold(zone_t *z) 14907c478bd9Sstevel@tonic-gate { 14917c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 14927c478bd9Sstevel@tonic-gate z->zone_cred_ref++; 14937c478bd9Sstevel@tonic-gate ASSERT(z->zone_cred_ref != 0); 14947c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 14957c478bd9Sstevel@tonic-gate } 14967c478bd9Sstevel@tonic-gate 14977c478bd9Sstevel@tonic-gate void 14987c478bd9Sstevel@tonic-gate zone_cred_rele(zone_t *z) 14997c478bd9Sstevel@tonic-gate { 15007c478bd9Sstevel@tonic-gate boolean_t wakeup; 15017c478bd9Sstevel@tonic-gate 15027c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 15037c478bd9Sstevel@tonic-gate ASSERT(z->zone_cred_ref != 0); 15047c478bd9Sstevel@tonic-gate z->zone_cred_ref--; 15057c478bd9Sstevel@tonic-gate if (z->zone_ref == 0 && z->zone_cred_ref == 0) { 15067c478bd9Sstevel@tonic-gate /* no more refs, free the structure */ 15077c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 15087c478bd9Sstevel@tonic-gate zone_free(z); 15097c478bd9Sstevel@tonic-gate return; 15107c478bd9Sstevel@tonic-gate } 15117c478bd9Sstevel@tonic-gate /* 15127c478bd9Sstevel@tonic-gate * If zone_destroy is waiting for the cred references to drain 15137c478bd9Sstevel@tonic-gate * out, and they have, signal it. 15147c478bd9Sstevel@tonic-gate */ 15157c478bd9Sstevel@tonic-gate wakeup = (zone_wait_for_cred && ZONE_IS_UNREF(z) && 15167c478bd9Sstevel@tonic-gate zone_status_get(z) >= ZONE_IS_DEAD); 15177c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 15187c478bd9Sstevel@tonic-gate 15197c478bd9Sstevel@tonic-gate if (wakeup) { 15207c478bd9Sstevel@tonic-gate /* 15217c478bd9Sstevel@tonic-gate * Grabbing zonehash_lock here effectively synchronizes with 15227c478bd9Sstevel@tonic-gate * zone_destroy() to avoid missed signals. 15237c478bd9Sstevel@tonic-gate */ 15247c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 15257c478bd9Sstevel@tonic-gate cv_broadcast(&zone_destroy_cv); 15267c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 15277c478bd9Sstevel@tonic-gate } 15287c478bd9Sstevel@tonic-gate } 15297c478bd9Sstevel@tonic-gate 15307c478bd9Sstevel@tonic-gate void 15317c478bd9Sstevel@tonic-gate zone_task_hold(zone_t *z) 15327c478bd9Sstevel@tonic-gate { 15337c478bd9Sstevel@tonic-gate mutex_enter(&z->zone_lock); 15347c478bd9Sstevel@tonic-gate z->zone_ntasks++; 15357c478bd9Sstevel@tonic-gate ASSERT(z->zone_ntasks != 0); 15367c478bd9Sstevel@tonic-gate mutex_exit(&z->zone_lock); 15377c478bd9Sstevel@tonic-gate } 15387c478bd9Sstevel@tonic-gate 15397c478bd9Sstevel@tonic-gate void 15407c478bd9Sstevel@tonic-gate zone_task_rele(zone_t *zone) 15417c478bd9Sstevel@tonic-gate { 15427c478bd9Sstevel@tonic-gate uint_t refcnt; 15437c478bd9Sstevel@tonic-gate 15447c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 15457c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ntasks != 0); 15467c478bd9Sstevel@tonic-gate refcnt = --zone->zone_ntasks; 15477c478bd9Sstevel@tonic-gate if (refcnt > 1) { /* Common case */ 15487c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 15497c478bd9Sstevel@tonic-gate return; 15507c478bd9Sstevel@tonic-gate } 15517c478bd9Sstevel@tonic-gate zone_hold_locked(zone); /* so we can use the zone_t later */ 15527c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 15537c478bd9Sstevel@tonic-gate if (refcnt == 1) { 15547c478bd9Sstevel@tonic-gate /* 15557c478bd9Sstevel@tonic-gate * See if the zone is shutting down. 15567c478bd9Sstevel@tonic-gate */ 15577c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 15587c478bd9Sstevel@tonic-gate if (zone_status_get(zone) != ZONE_IS_SHUTTING_DOWN) { 15597c478bd9Sstevel@tonic-gate goto out; 15607c478bd9Sstevel@tonic-gate } 15617c478bd9Sstevel@tonic-gate 15627c478bd9Sstevel@tonic-gate /* 15637c478bd9Sstevel@tonic-gate * Make sure the ntasks didn't change since we 15647c478bd9Sstevel@tonic-gate * dropped zone_lock. 15657c478bd9Sstevel@tonic-gate */ 15667c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 15677c478bd9Sstevel@tonic-gate if (refcnt != zone->zone_ntasks) { 15687c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 15697c478bd9Sstevel@tonic-gate goto out; 15707c478bd9Sstevel@tonic-gate } 15717c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 15727c478bd9Sstevel@tonic-gate 15737c478bd9Sstevel@tonic-gate /* 15747c478bd9Sstevel@tonic-gate * No more user processes in the zone. The zone is empty. 15757c478bd9Sstevel@tonic-gate */ 15767c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_EMPTY); 15777c478bd9Sstevel@tonic-gate goto out; 15787c478bd9Sstevel@tonic-gate } 15797c478bd9Sstevel@tonic-gate 15807c478bd9Sstevel@tonic-gate ASSERT(refcnt == 0); 15817c478bd9Sstevel@tonic-gate /* 15827c478bd9Sstevel@tonic-gate * zsched has exited; the zone is dead. 15837c478bd9Sstevel@tonic-gate */ 15847c478bd9Sstevel@tonic-gate zone->zone_zsched = NULL; /* paranoia */ 15857c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 15867c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DEAD); 15877c478bd9Sstevel@tonic-gate out: 15887c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 15897c478bd9Sstevel@tonic-gate zone_rele(zone); 15907c478bd9Sstevel@tonic-gate } 15917c478bd9Sstevel@tonic-gate 15927c478bd9Sstevel@tonic-gate zoneid_t 15937c478bd9Sstevel@tonic-gate getzoneid(void) 15947c478bd9Sstevel@tonic-gate { 15957c478bd9Sstevel@tonic-gate return (curproc->p_zone->zone_id); 15967c478bd9Sstevel@tonic-gate } 15977c478bd9Sstevel@tonic-gate 15987c478bd9Sstevel@tonic-gate /* 15997c478bd9Sstevel@tonic-gate * Internal versions of zone_find_by_*(). These don't zone_hold() or 16007c478bd9Sstevel@tonic-gate * check the validity of a zone's state. 16017c478bd9Sstevel@tonic-gate */ 16027c478bd9Sstevel@tonic-gate static zone_t * 16037c478bd9Sstevel@tonic-gate zone_find_all_by_id(zoneid_t zoneid) 16047c478bd9Sstevel@tonic-gate { 16057c478bd9Sstevel@tonic-gate mod_hash_val_t hv; 16067c478bd9Sstevel@tonic-gate zone_t *zone = NULL; 16077c478bd9Sstevel@tonic-gate 16087c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 16097c478bd9Sstevel@tonic-gate 16107c478bd9Sstevel@tonic-gate if (mod_hash_find(zonehashbyid, 16117c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zoneid, &hv) == 0) 16127c478bd9Sstevel@tonic-gate zone = (zone_t *)hv; 16137c478bd9Sstevel@tonic-gate return (zone); 16147c478bd9Sstevel@tonic-gate } 16157c478bd9Sstevel@tonic-gate 161645916cd2Sjpk static zone_t * 161745916cd2Sjpk zone_find_all_by_label(const ts_label_t *label) 161845916cd2Sjpk { 161945916cd2Sjpk mod_hash_val_t hv; 162045916cd2Sjpk zone_t *zone = NULL; 162145916cd2Sjpk 162245916cd2Sjpk ASSERT(MUTEX_HELD(&zonehash_lock)); 162345916cd2Sjpk 162445916cd2Sjpk /* 162545916cd2Sjpk * zonehashbylabel is not maintained for unlabeled systems 162645916cd2Sjpk */ 162745916cd2Sjpk if (!is_system_labeled()) 162845916cd2Sjpk return (NULL); 162945916cd2Sjpk if (mod_hash_find(zonehashbylabel, (mod_hash_key_t)label, &hv) == 0) 163045916cd2Sjpk zone = (zone_t *)hv; 163145916cd2Sjpk return (zone); 163245916cd2Sjpk } 163345916cd2Sjpk 16347c478bd9Sstevel@tonic-gate static zone_t * 16357c478bd9Sstevel@tonic-gate zone_find_all_by_name(char *name) 16367c478bd9Sstevel@tonic-gate { 16377c478bd9Sstevel@tonic-gate mod_hash_val_t hv; 16387c478bd9Sstevel@tonic-gate zone_t *zone = NULL; 16397c478bd9Sstevel@tonic-gate 16407c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 16417c478bd9Sstevel@tonic-gate 16427c478bd9Sstevel@tonic-gate if (mod_hash_find(zonehashbyname, (mod_hash_key_t)name, &hv) == 0) 16437c478bd9Sstevel@tonic-gate zone = (zone_t *)hv; 16447c478bd9Sstevel@tonic-gate return (zone); 16457c478bd9Sstevel@tonic-gate } 16467c478bd9Sstevel@tonic-gate 16477c478bd9Sstevel@tonic-gate /* 16487c478bd9Sstevel@tonic-gate * Public interface for looking up a zone by zoneid. Only returns the zone if 16497c478bd9Sstevel@tonic-gate * it is fully initialized, and has not yet begun the zone_destroy() sequence. 16507c478bd9Sstevel@tonic-gate * Caller must call zone_rele() once it is done with the zone. 16517c478bd9Sstevel@tonic-gate * 16527c478bd9Sstevel@tonic-gate * The zone may begin the zone_destroy() sequence immediately after this 16537c478bd9Sstevel@tonic-gate * function returns, but may be safely used until zone_rele() is called. 16547c478bd9Sstevel@tonic-gate */ 16557c478bd9Sstevel@tonic-gate zone_t * 16567c478bd9Sstevel@tonic-gate zone_find_by_id(zoneid_t zoneid) 16577c478bd9Sstevel@tonic-gate { 16587c478bd9Sstevel@tonic-gate zone_t *zone; 16597c478bd9Sstevel@tonic-gate zone_status_t status; 16607c478bd9Sstevel@tonic-gate 16617c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 16627c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 16637c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 16647c478bd9Sstevel@tonic-gate return (NULL); 16657c478bd9Sstevel@tonic-gate } 16667c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 16677c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) { 16687c478bd9Sstevel@tonic-gate /* 16697c478bd9Sstevel@tonic-gate * For all practical purposes the zone doesn't exist. 16707c478bd9Sstevel@tonic-gate */ 16717c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 16727c478bd9Sstevel@tonic-gate return (NULL); 16737c478bd9Sstevel@tonic-gate } 16747c478bd9Sstevel@tonic-gate zone_hold(zone); 16757c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 16767c478bd9Sstevel@tonic-gate return (zone); 16777c478bd9Sstevel@tonic-gate } 16787c478bd9Sstevel@tonic-gate 167945916cd2Sjpk /* 168045916cd2Sjpk * Similar to zone_find_by_id, but using zone label as the key. 168145916cd2Sjpk */ 168245916cd2Sjpk zone_t * 168345916cd2Sjpk zone_find_by_label(const ts_label_t *label) 168445916cd2Sjpk { 168545916cd2Sjpk zone_t *zone; 168642bc57c4Srica zone_status_t status; 168745916cd2Sjpk 168845916cd2Sjpk mutex_enter(&zonehash_lock); 168945916cd2Sjpk if ((zone = zone_find_all_by_label(label)) == NULL) { 169045916cd2Sjpk mutex_exit(&zonehash_lock); 169145916cd2Sjpk return (NULL); 169245916cd2Sjpk } 169342bc57c4Srica 169442bc57c4Srica status = zone_status_get(zone); 169542bc57c4Srica if (status > ZONE_IS_DOWN) { 169645916cd2Sjpk /* 169745916cd2Sjpk * For all practical purposes the zone doesn't exist. 169845916cd2Sjpk */ 169942bc57c4Srica mutex_exit(&zonehash_lock); 170042bc57c4Srica return (NULL); 170145916cd2Sjpk } 170242bc57c4Srica zone_hold(zone); 170345916cd2Sjpk mutex_exit(&zonehash_lock); 170445916cd2Sjpk return (zone); 170545916cd2Sjpk } 170645916cd2Sjpk 17077c478bd9Sstevel@tonic-gate /* 17087c478bd9Sstevel@tonic-gate * Similar to zone_find_by_id, but using zone name as the key. 17097c478bd9Sstevel@tonic-gate */ 17107c478bd9Sstevel@tonic-gate zone_t * 17117c478bd9Sstevel@tonic-gate zone_find_by_name(char *name) 17127c478bd9Sstevel@tonic-gate { 17137c478bd9Sstevel@tonic-gate zone_t *zone; 17147c478bd9Sstevel@tonic-gate zone_status_t status; 17157c478bd9Sstevel@tonic-gate 17167c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 17177c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_name(name)) == NULL) { 17187c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17197c478bd9Sstevel@tonic-gate return (NULL); 17207c478bd9Sstevel@tonic-gate } 17217c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 17227c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) { 17237c478bd9Sstevel@tonic-gate /* 17247c478bd9Sstevel@tonic-gate * For all practical purposes the zone doesn't exist. 17257c478bd9Sstevel@tonic-gate */ 17267c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17277c478bd9Sstevel@tonic-gate return (NULL); 17287c478bd9Sstevel@tonic-gate } 17297c478bd9Sstevel@tonic-gate zone_hold(zone); 17307c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17317c478bd9Sstevel@tonic-gate return (zone); 17327c478bd9Sstevel@tonic-gate } 17337c478bd9Sstevel@tonic-gate 17347c478bd9Sstevel@tonic-gate /* 17357c478bd9Sstevel@tonic-gate * Similar to zone_find_by_id(), using the path as a key. For instance, 17367c478bd9Sstevel@tonic-gate * if there is a zone "foo" rooted at /foo/root, and the path argument 17377c478bd9Sstevel@tonic-gate * is "/foo/root/proc", it will return the held zone_t corresponding to 17387c478bd9Sstevel@tonic-gate * zone "foo". 17397c478bd9Sstevel@tonic-gate * 17407c478bd9Sstevel@tonic-gate * zone_find_by_path() always returns a non-NULL value, since at the 17417c478bd9Sstevel@tonic-gate * very least every path will be contained in the global zone. 17427c478bd9Sstevel@tonic-gate * 17437c478bd9Sstevel@tonic-gate * As with the other zone_find_by_*() functions, the caller is 17447c478bd9Sstevel@tonic-gate * responsible for zone_rele()ing the return value of this function. 17457c478bd9Sstevel@tonic-gate */ 17467c478bd9Sstevel@tonic-gate zone_t * 17477c478bd9Sstevel@tonic-gate zone_find_by_path(const char *path) 17487c478bd9Sstevel@tonic-gate { 17497c478bd9Sstevel@tonic-gate zone_t *zone; 17507c478bd9Sstevel@tonic-gate zone_t *zret = NULL; 17517c478bd9Sstevel@tonic-gate zone_status_t status; 17527c478bd9Sstevel@tonic-gate 17537c478bd9Sstevel@tonic-gate if (path == NULL) { 17547c478bd9Sstevel@tonic-gate /* 17557c478bd9Sstevel@tonic-gate * Call from rootconf(). 17567c478bd9Sstevel@tonic-gate */ 17577c478bd9Sstevel@tonic-gate zone_hold(global_zone); 17587c478bd9Sstevel@tonic-gate return (global_zone); 17597c478bd9Sstevel@tonic-gate } 17607c478bd9Sstevel@tonic-gate ASSERT(*path == '/'); 17617c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 17627c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 17637c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 17647c478bd9Sstevel@tonic-gate if (ZONE_PATH_VISIBLE(path, zone)) 17657c478bd9Sstevel@tonic-gate zret = zone; 17667c478bd9Sstevel@tonic-gate } 17677c478bd9Sstevel@tonic-gate ASSERT(zret != NULL); 17687c478bd9Sstevel@tonic-gate status = zone_status_get(zret); 17697c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) { 17707c478bd9Sstevel@tonic-gate /* 17717c478bd9Sstevel@tonic-gate * Zone practically doesn't exist. 17727c478bd9Sstevel@tonic-gate */ 17737c478bd9Sstevel@tonic-gate zret = global_zone; 17747c478bd9Sstevel@tonic-gate } 17757c478bd9Sstevel@tonic-gate zone_hold(zret); 17767c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 17777c478bd9Sstevel@tonic-gate return (zret); 17787c478bd9Sstevel@tonic-gate } 17797c478bd9Sstevel@tonic-gate 17807c478bd9Sstevel@tonic-gate /* 17817c478bd9Sstevel@tonic-gate * Get the number of cpus visible to this zone. The system-wide global 17827c478bd9Sstevel@tonic-gate * 'ncpus' is returned if pools are disabled, the caller is in the 17837c478bd9Sstevel@tonic-gate * global zone, or a NULL zone argument is passed in. 17847c478bd9Sstevel@tonic-gate */ 17857c478bd9Sstevel@tonic-gate int 17867c478bd9Sstevel@tonic-gate zone_ncpus_get(zone_t *zone) 17877c478bd9Sstevel@tonic-gate { 17887c478bd9Sstevel@tonic-gate int myncpus = zone == NULL ? 0 : zone->zone_ncpus; 17897c478bd9Sstevel@tonic-gate 17907c478bd9Sstevel@tonic-gate return (myncpus != 0 ? myncpus : ncpus); 17917c478bd9Sstevel@tonic-gate } 17927c478bd9Sstevel@tonic-gate 17937c478bd9Sstevel@tonic-gate /* 17947c478bd9Sstevel@tonic-gate * Get the number of online cpus visible to this zone. The system-wide 17957c478bd9Sstevel@tonic-gate * global 'ncpus_online' is returned if pools are disabled, the caller 17967c478bd9Sstevel@tonic-gate * is in the global zone, or a NULL zone argument is passed in. 17977c478bd9Sstevel@tonic-gate */ 17987c478bd9Sstevel@tonic-gate int 17997c478bd9Sstevel@tonic-gate zone_ncpus_online_get(zone_t *zone) 18007c478bd9Sstevel@tonic-gate { 18017c478bd9Sstevel@tonic-gate int myncpus_online = zone == NULL ? 0 : zone->zone_ncpus_online; 18027c478bd9Sstevel@tonic-gate 18037c478bd9Sstevel@tonic-gate return (myncpus_online != 0 ? myncpus_online : ncpus_online); 18047c478bd9Sstevel@tonic-gate } 18057c478bd9Sstevel@tonic-gate 18067c478bd9Sstevel@tonic-gate /* 18077c478bd9Sstevel@tonic-gate * Return the pool to which the zone is currently bound. 18087c478bd9Sstevel@tonic-gate */ 18097c478bd9Sstevel@tonic-gate pool_t * 18107c478bd9Sstevel@tonic-gate zone_pool_get(zone_t *zone) 18117c478bd9Sstevel@tonic-gate { 18127c478bd9Sstevel@tonic-gate ASSERT(pool_lock_held()); 18137c478bd9Sstevel@tonic-gate 18147c478bd9Sstevel@tonic-gate return (zone->zone_pool); 18157c478bd9Sstevel@tonic-gate } 18167c478bd9Sstevel@tonic-gate 18177c478bd9Sstevel@tonic-gate /* 18187c478bd9Sstevel@tonic-gate * Set the zone's pool pointer and update the zone's visibility to match 18197c478bd9Sstevel@tonic-gate * the resources in the new pool. 18207c478bd9Sstevel@tonic-gate */ 18217c478bd9Sstevel@tonic-gate void 18227c478bd9Sstevel@tonic-gate zone_pool_set(zone_t *zone, pool_t *pool) 18237c478bd9Sstevel@tonic-gate { 18247c478bd9Sstevel@tonic-gate ASSERT(pool_lock_held()); 18257c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 18267c478bd9Sstevel@tonic-gate 18277c478bd9Sstevel@tonic-gate zone->zone_pool = pool; 18287c478bd9Sstevel@tonic-gate zone_pset_set(zone, pool->pool_pset->pset_id); 18297c478bd9Sstevel@tonic-gate } 18307c478bd9Sstevel@tonic-gate 18317c478bd9Sstevel@tonic-gate /* 18327c478bd9Sstevel@tonic-gate * Return the cached value of the id of the processor set to which the 18337c478bd9Sstevel@tonic-gate * zone is currently bound. The value will be ZONE_PS_INVAL if the pools 18347c478bd9Sstevel@tonic-gate * facility is disabled. 18357c478bd9Sstevel@tonic-gate */ 18367c478bd9Sstevel@tonic-gate psetid_t 18377c478bd9Sstevel@tonic-gate zone_pset_get(zone_t *zone) 18387c478bd9Sstevel@tonic-gate { 18397c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 18407c478bd9Sstevel@tonic-gate 18417c478bd9Sstevel@tonic-gate return (zone->zone_psetid); 18427c478bd9Sstevel@tonic-gate } 18437c478bd9Sstevel@tonic-gate 18447c478bd9Sstevel@tonic-gate /* 18457c478bd9Sstevel@tonic-gate * Set the cached value of the id of the processor set to which the zone 18467c478bd9Sstevel@tonic-gate * is currently bound. Also update the zone's visibility to match the 18477c478bd9Sstevel@tonic-gate * resources in the new processor set. 18487c478bd9Sstevel@tonic-gate */ 18497c478bd9Sstevel@tonic-gate void 18507c478bd9Sstevel@tonic-gate zone_pset_set(zone_t *zone, psetid_t newpsetid) 18517c478bd9Sstevel@tonic-gate { 18527c478bd9Sstevel@tonic-gate psetid_t oldpsetid; 18537c478bd9Sstevel@tonic-gate 18547c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&cpu_lock)); 18557c478bd9Sstevel@tonic-gate oldpsetid = zone_pset_get(zone); 18567c478bd9Sstevel@tonic-gate 18577c478bd9Sstevel@tonic-gate if (oldpsetid == newpsetid) 18587c478bd9Sstevel@tonic-gate return; 18597c478bd9Sstevel@tonic-gate /* 18607c478bd9Sstevel@tonic-gate * Global zone sees all. 18617c478bd9Sstevel@tonic-gate */ 18627c478bd9Sstevel@tonic-gate if (zone != global_zone) { 18637c478bd9Sstevel@tonic-gate zone->zone_psetid = newpsetid; 18647c478bd9Sstevel@tonic-gate if (newpsetid != ZONE_PS_INVAL) 18657c478bd9Sstevel@tonic-gate pool_pset_visibility_add(newpsetid, zone); 18667c478bd9Sstevel@tonic-gate if (oldpsetid != ZONE_PS_INVAL) 18677c478bd9Sstevel@tonic-gate pool_pset_visibility_remove(oldpsetid, zone); 18687c478bd9Sstevel@tonic-gate } 18697c478bd9Sstevel@tonic-gate /* 18707c478bd9Sstevel@tonic-gate * Disabling pools, so we should start using the global values 18717c478bd9Sstevel@tonic-gate * for ncpus and ncpus_online. 18727c478bd9Sstevel@tonic-gate */ 18737c478bd9Sstevel@tonic-gate if (newpsetid == ZONE_PS_INVAL) { 18747c478bd9Sstevel@tonic-gate zone->zone_ncpus = 0; 18757c478bd9Sstevel@tonic-gate zone->zone_ncpus_online = 0; 18767c478bd9Sstevel@tonic-gate } 18777c478bd9Sstevel@tonic-gate } 18787c478bd9Sstevel@tonic-gate 18797c478bd9Sstevel@tonic-gate /* 18807c478bd9Sstevel@tonic-gate * Walk the list of active zones and issue the provided callback for 18817c478bd9Sstevel@tonic-gate * each of them. 18827c478bd9Sstevel@tonic-gate * 18837c478bd9Sstevel@tonic-gate * Caller must not be holding any locks that may be acquired under 18847c478bd9Sstevel@tonic-gate * zonehash_lock. See comment at the beginning of the file for a list of 18857c478bd9Sstevel@tonic-gate * common locks and their interactions with zones. 18867c478bd9Sstevel@tonic-gate */ 18877c478bd9Sstevel@tonic-gate int 18887c478bd9Sstevel@tonic-gate zone_walk(int (*cb)(zone_t *, void *), void *data) 18897c478bd9Sstevel@tonic-gate { 18907c478bd9Sstevel@tonic-gate zone_t *zone; 18917c478bd9Sstevel@tonic-gate int ret = 0; 18927c478bd9Sstevel@tonic-gate zone_status_t status; 18937c478bd9Sstevel@tonic-gate 18947c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 18957c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 18967c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 18977c478bd9Sstevel@tonic-gate /* 18987c478bd9Sstevel@tonic-gate * Skip zones that shouldn't be externally visible. 18997c478bd9Sstevel@tonic-gate */ 19007c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 19017c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status > ZONE_IS_DOWN) 19027c478bd9Sstevel@tonic-gate continue; 19037c478bd9Sstevel@tonic-gate /* 19047c478bd9Sstevel@tonic-gate * Bail immediately if any callback invocation returns a 19057c478bd9Sstevel@tonic-gate * non-zero value. 19067c478bd9Sstevel@tonic-gate */ 19077c478bd9Sstevel@tonic-gate ret = (*cb)(zone, data); 19087c478bd9Sstevel@tonic-gate if (ret != 0) 19097c478bd9Sstevel@tonic-gate break; 19107c478bd9Sstevel@tonic-gate } 19117c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 19127c478bd9Sstevel@tonic-gate return (ret); 19137c478bd9Sstevel@tonic-gate } 19147c478bd9Sstevel@tonic-gate 19157c478bd9Sstevel@tonic-gate static int 19167c478bd9Sstevel@tonic-gate zone_set_root(zone_t *zone, const char *upath) 19177c478bd9Sstevel@tonic-gate { 19187c478bd9Sstevel@tonic-gate vnode_t *vp; 19197c478bd9Sstevel@tonic-gate int trycount; 19207c478bd9Sstevel@tonic-gate int error = 0; 19217c478bd9Sstevel@tonic-gate char *path; 19227c478bd9Sstevel@tonic-gate struct pathname upn, pn; 19237c478bd9Sstevel@tonic-gate size_t pathlen; 19247c478bd9Sstevel@tonic-gate 19257c478bd9Sstevel@tonic-gate if ((error = pn_get((char *)upath, UIO_USERSPACE, &upn)) != 0) 19267c478bd9Sstevel@tonic-gate return (error); 19277c478bd9Sstevel@tonic-gate 19287c478bd9Sstevel@tonic-gate pn_alloc(&pn); 19297c478bd9Sstevel@tonic-gate 19307c478bd9Sstevel@tonic-gate /* prevent infinite loop */ 19317c478bd9Sstevel@tonic-gate trycount = 10; 19327c478bd9Sstevel@tonic-gate for (;;) { 19337c478bd9Sstevel@tonic-gate if (--trycount <= 0) { 19347c478bd9Sstevel@tonic-gate error = ESTALE; 19357c478bd9Sstevel@tonic-gate goto out; 19367c478bd9Sstevel@tonic-gate } 19377c478bd9Sstevel@tonic-gate 19387c478bd9Sstevel@tonic-gate if ((error = lookuppn(&upn, &pn, FOLLOW, NULLVPP, &vp)) == 0) { 19397c478bd9Sstevel@tonic-gate /* 19407c478bd9Sstevel@tonic-gate * VOP_ACCESS() may cover 'vp' with a new 19417c478bd9Sstevel@tonic-gate * filesystem, if 'vp' is an autoFS vnode. 19427c478bd9Sstevel@tonic-gate * Get the new 'vp' if so. 19437c478bd9Sstevel@tonic-gate */ 19447c478bd9Sstevel@tonic-gate if ((error = VOP_ACCESS(vp, VEXEC, 0, CRED())) == 0 && 19457c478bd9Sstevel@tonic-gate (vp->v_vfsmountedhere == NULL || 19467c478bd9Sstevel@tonic-gate (error = traverse(&vp)) == 0)) { 19477c478bd9Sstevel@tonic-gate pathlen = pn.pn_pathlen + 2; 19487c478bd9Sstevel@tonic-gate path = kmem_alloc(pathlen, KM_SLEEP); 19497c478bd9Sstevel@tonic-gate (void) strncpy(path, pn.pn_path, 19507c478bd9Sstevel@tonic-gate pn.pn_pathlen + 1); 19517c478bd9Sstevel@tonic-gate path[pathlen - 2] = '/'; 19527c478bd9Sstevel@tonic-gate path[pathlen - 1] = '\0'; 19537c478bd9Sstevel@tonic-gate pn_free(&pn); 19547c478bd9Sstevel@tonic-gate pn_free(&upn); 19557c478bd9Sstevel@tonic-gate 19567c478bd9Sstevel@tonic-gate /* Success! */ 19577c478bd9Sstevel@tonic-gate break; 19587c478bd9Sstevel@tonic-gate } 19597c478bd9Sstevel@tonic-gate VN_RELE(vp); 19607c478bd9Sstevel@tonic-gate } 19617c478bd9Sstevel@tonic-gate if (error != ESTALE) 19627c478bd9Sstevel@tonic-gate goto out; 19637c478bd9Sstevel@tonic-gate } 19647c478bd9Sstevel@tonic-gate 19657c478bd9Sstevel@tonic-gate ASSERT(error == 0); 19667c478bd9Sstevel@tonic-gate zone->zone_rootvp = vp; /* we hold a reference to vp */ 19677c478bd9Sstevel@tonic-gate zone->zone_rootpath = path; 19687c478bd9Sstevel@tonic-gate zone->zone_rootpathlen = pathlen; 196948451833Scarlsonj if (pathlen > 5 && strcmp(path + pathlen - 5, "/lu/") == 0) 197048451833Scarlsonj zone->zone_flags |= ZF_IS_SCRATCH; 19717c478bd9Sstevel@tonic-gate return (0); 19727c478bd9Sstevel@tonic-gate 19737c478bd9Sstevel@tonic-gate out: 19747c478bd9Sstevel@tonic-gate pn_free(&pn); 19757c478bd9Sstevel@tonic-gate pn_free(&upn); 19767c478bd9Sstevel@tonic-gate return (error); 19777c478bd9Sstevel@tonic-gate } 19787c478bd9Sstevel@tonic-gate 19797c478bd9Sstevel@tonic-gate #define isalnum(c) (((c) >= '0' && (c) <= '9') || \ 19807c478bd9Sstevel@tonic-gate ((c) >= 'a' && (c) <= 'z') || \ 19817c478bd9Sstevel@tonic-gate ((c) >= 'A' && (c) <= 'Z')) 19827c478bd9Sstevel@tonic-gate 19837c478bd9Sstevel@tonic-gate static int 19847c478bd9Sstevel@tonic-gate zone_set_name(zone_t *zone, const char *uname) 19857c478bd9Sstevel@tonic-gate { 19867c478bd9Sstevel@tonic-gate char *kname = kmem_zalloc(ZONENAME_MAX, KM_SLEEP); 19877c478bd9Sstevel@tonic-gate size_t len; 19887c478bd9Sstevel@tonic-gate int i, err; 19897c478bd9Sstevel@tonic-gate 19907c478bd9Sstevel@tonic-gate if ((err = copyinstr(uname, kname, ZONENAME_MAX, &len)) != 0) { 19917c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 19927c478bd9Sstevel@tonic-gate return (err); /* EFAULT or ENAMETOOLONG */ 19937c478bd9Sstevel@tonic-gate } 19947c478bd9Sstevel@tonic-gate 19957c478bd9Sstevel@tonic-gate /* must be less than ZONENAME_MAX */ 19967c478bd9Sstevel@tonic-gate if (len == ZONENAME_MAX && kname[ZONENAME_MAX - 1] != '\0') { 19977c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 19987c478bd9Sstevel@tonic-gate return (EINVAL); 19997c478bd9Sstevel@tonic-gate } 20007c478bd9Sstevel@tonic-gate 20017c478bd9Sstevel@tonic-gate /* 20027c478bd9Sstevel@tonic-gate * Name must start with an alphanumeric and must contain only 20037c478bd9Sstevel@tonic-gate * alphanumerics, '-', '_' and '.'. 20047c478bd9Sstevel@tonic-gate */ 20057c478bd9Sstevel@tonic-gate if (!isalnum(kname[0])) { 20067c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 20077c478bd9Sstevel@tonic-gate return (EINVAL); 20087c478bd9Sstevel@tonic-gate } 20097c478bd9Sstevel@tonic-gate for (i = 1; i < len - 1; i++) { 20107c478bd9Sstevel@tonic-gate if (!isalnum(kname[i]) && kname[i] != '-' && kname[i] != '_' && 20117c478bd9Sstevel@tonic-gate kname[i] != '.') { 20127c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 20137c478bd9Sstevel@tonic-gate return (EINVAL); 20147c478bd9Sstevel@tonic-gate } 20157c478bd9Sstevel@tonic-gate } 20167c478bd9Sstevel@tonic-gate 20177c478bd9Sstevel@tonic-gate zone->zone_name = kname; 20187c478bd9Sstevel@tonic-gate return (0); 20197c478bd9Sstevel@tonic-gate } 20207c478bd9Sstevel@tonic-gate 20217c478bd9Sstevel@tonic-gate /* 20227c478bd9Sstevel@tonic-gate * Similar to thread_create(), but makes sure the thread is in the appropriate 20237c478bd9Sstevel@tonic-gate * zone's zsched process (curproc->p_zone->zone_zsched) before returning. 20247c478bd9Sstevel@tonic-gate */ 20257c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 20267c478bd9Sstevel@tonic-gate kthread_t * 20277c478bd9Sstevel@tonic-gate zthread_create( 20287c478bd9Sstevel@tonic-gate caddr_t stk, 20297c478bd9Sstevel@tonic-gate size_t stksize, 20307c478bd9Sstevel@tonic-gate void (*proc)(), 20317c478bd9Sstevel@tonic-gate void *arg, 20327c478bd9Sstevel@tonic-gate size_t len, 20337c478bd9Sstevel@tonic-gate pri_t pri) 20347c478bd9Sstevel@tonic-gate { 20357c478bd9Sstevel@tonic-gate kthread_t *t; 20367c478bd9Sstevel@tonic-gate zone_t *zone = curproc->p_zone; 20377c478bd9Sstevel@tonic-gate proc_t *pp = zone->zone_zsched; 20387c478bd9Sstevel@tonic-gate 20397c478bd9Sstevel@tonic-gate zone_hold(zone); /* Reference to be dropped when thread exits */ 20407c478bd9Sstevel@tonic-gate 20417c478bd9Sstevel@tonic-gate /* 20427c478bd9Sstevel@tonic-gate * No-one should be trying to create threads if the zone is shutting 20437c478bd9Sstevel@tonic-gate * down and there aren't any kernel threads around. See comment 20447c478bd9Sstevel@tonic-gate * in zthread_exit(). 20457c478bd9Sstevel@tonic-gate */ 20467c478bd9Sstevel@tonic-gate ASSERT(!(zone->zone_kthreads == NULL && 20477c478bd9Sstevel@tonic-gate zone_status_get(zone) >= ZONE_IS_EMPTY)); 20487c478bd9Sstevel@tonic-gate /* 20497c478bd9Sstevel@tonic-gate * Create a thread, but don't let it run until we've finished setting 20507c478bd9Sstevel@tonic-gate * things up. 20517c478bd9Sstevel@tonic-gate */ 20527c478bd9Sstevel@tonic-gate t = thread_create(stk, stksize, proc, arg, len, pp, TS_STOPPED, pri); 20537c478bd9Sstevel@tonic-gate ASSERT(t->t_forw == NULL); 20547c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 20557c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == NULL) { 20567c478bd9Sstevel@tonic-gate t->t_forw = t->t_back = t; 20577c478bd9Sstevel@tonic-gate } else { 20587c478bd9Sstevel@tonic-gate kthread_t *tx = zone->zone_kthreads; 20597c478bd9Sstevel@tonic-gate 20607c478bd9Sstevel@tonic-gate t->t_forw = tx; 20617c478bd9Sstevel@tonic-gate t->t_back = tx->t_back; 20627c478bd9Sstevel@tonic-gate tx->t_back->t_forw = t; 20637c478bd9Sstevel@tonic-gate tx->t_back = t; 20647c478bd9Sstevel@tonic-gate } 20657c478bd9Sstevel@tonic-gate zone->zone_kthreads = t; 20667c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 20677c478bd9Sstevel@tonic-gate 20687c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 20697c478bd9Sstevel@tonic-gate t->t_proc_flag |= TP_ZTHREAD; 20707c478bd9Sstevel@tonic-gate project_rele(t->t_proj); 20717c478bd9Sstevel@tonic-gate t->t_proj = project_hold(pp->p_task->tk_proj); 20727c478bd9Sstevel@tonic-gate 20737c478bd9Sstevel@tonic-gate /* 20747c478bd9Sstevel@tonic-gate * Setup complete, let it run. 20757c478bd9Sstevel@tonic-gate */ 20767c478bd9Sstevel@tonic-gate thread_lock(t); 20777c478bd9Sstevel@tonic-gate t->t_schedflag |= TS_ALLSTART; 20787c478bd9Sstevel@tonic-gate setrun_locked(t); 20797c478bd9Sstevel@tonic-gate thread_unlock(t); 20807c478bd9Sstevel@tonic-gate 20817c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 20827c478bd9Sstevel@tonic-gate 20837c478bd9Sstevel@tonic-gate return (t); 20847c478bd9Sstevel@tonic-gate } 20857c478bd9Sstevel@tonic-gate 20867c478bd9Sstevel@tonic-gate /* 20877c478bd9Sstevel@tonic-gate * Similar to thread_exit(). Must be called by threads created via 20887c478bd9Sstevel@tonic-gate * zthread_exit(). 20897c478bd9Sstevel@tonic-gate */ 20907c478bd9Sstevel@tonic-gate void 20917c478bd9Sstevel@tonic-gate zthread_exit(void) 20927c478bd9Sstevel@tonic-gate { 20937c478bd9Sstevel@tonic-gate kthread_t *t = curthread; 20947c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 20957c478bd9Sstevel@tonic-gate zone_t *zone = pp->p_zone; 20967c478bd9Sstevel@tonic-gate 20977c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 20987c478bd9Sstevel@tonic-gate 20997c478bd9Sstevel@tonic-gate /* 21007c478bd9Sstevel@tonic-gate * Reparent to p0 21017c478bd9Sstevel@tonic-gate */ 2102b4b07f87Sjosephb kpreempt_disable(); 21037c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 21047c478bd9Sstevel@tonic-gate t->t_proc_flag &= ~TP_ZTHREAD; 21057c478bd9Sstevel@tonic-gate t->t_procp = &p0; 21067c478bd9Sstevel@tonic-gate hat_thread_exit(t); 21077c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 2108b4b07f87Sjosephb kpreempt_enable(); 21097c478bd9Sstevel@tonic-gate 21107c478bd9Sstevel@tonic-gate if (t->t_back == t) { 21117c478bd9Sstevel@tonic-gate ASSERT(t->t_forw == t); 21127c478bd9Sstevel@tonic-gate /* 21137c478bd9Sstevel@tonic-gate * If the zone is empty, once the thread count 21147c478bd9Sstevel@tonic-gate * goes to zero no further kernel threads can be 21157c478bd9Sstevel@tonic-gate * created. This is because if the creator is a process 21167c478bd9Sstevel@tonic-gate * in the zone, then it must have exited before the zone 21177c478bd9Sstevel@tonic-gate * state could be set to ZONE_IS_EMPTY. 21187c478bd9Sstevel@tonic-gate * Otherwise, if the creator is a kernel thread in the 21197c478bd9Sstevel@tonic-gate * zone, the thread count is non-zero. 21207c478bd9Sstevel@tonic-gate * 21217c478bd9Sstevel@tonic-gate * This really means that non-zone kernel threads should 21227c478bd9Sstevel@tonic-gate * not create zone kernel threads. 21237c478bd9Sstevel@tonic-gate */ 21247c478bd9Sstevel@tonic-gate zone->zone_kthreads = NULL; 21257c478bd9Sstevel@tonic-gate if (zone_status_get(zone) == ZONE_IS_EMPTY) { 21267c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DOWN); 21277c478bd9Sstevel@tonic-gate } 21287c478bd9Sstevel@tonic-gate } else { 21297c478bd9Sstevel@tonic-gate t->t_forw->t_back = t->t_back; 21307c478bd9Sstevel@tonic-gate t->t_back->t_forw = t->t_forw; 21317c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == t) 21327c478bd9Sstevel@tonic-gate zone->zone_kthreads = t->t_forw; 21337c478bd9Sstevel@tonic-gate } 21347c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 21357c478bd9Sstevel@tonic-gate zone_rele(zone); 21367c478bd9Sstevel@tonic-gate thread_exit(); 21377c478bd9Sstevel@tonic-gate /* NOTREACHED */ 21387c478bd9Sstevel@tonic-gate } 21397c478bd9Sstevel@tonic-gate 21407c478bd9Sstevel@tonic-gate static void 21417c478bd9Sstevel@tonic-gate zone_chdir(vnode_t *vp, vnode_t **vpp, proc_t *pp) 21427c478bd9Sstevel@tonic-gate { 21437c478bd9Sstevel@tonic-gate vnode_t *oldvp; 21447c478bd9Sstevel@tonic-gate 21457c478bd9Sstevel@tonic-gate /* we're going to hold a reference here to the directory */ 21467c478bd9Sstevel@tonic-gate VN_HOLD(vp); 21477c478bd9Sstevel@tonic-gate 21487c478bd9Sstevel@tonic-gate #ifdef C2_AUDIT 21497c478bd9Sstevel@tonic-gate if (audit_active) /* update abs cwd/root path see c2audit.c */ 21507c478bd9Sstevel@tonic-gate audit_chdirec(vp, vpp); 21517c478bd9Sstevel@tonic-gate #endif 21527c478bd9Sstevel@tonic-gate 21537c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 21547c478bd9Sstevel@tonic-gate oldvp = *vpp; 21557c478bd9Sstevel@tonic-gate *vpp = vp; 21567c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 21577c478bd9Sstevel@tonic-gate if (oldvp != NULL) 21587c478bd9Sstevel@tonic-gate VN_RELE(oldvp); 21597c478bd9Sstevel@tonic-gate } 21607c478bd9Sstevel@tonic-gate 21617c478bd9Sstevel@tonic-gate /* 21627c478bd9Sstevel@tonic-gate * Convert an rctl value represented by an nvlist_t into an rctl_val_t. 21637c478bd9Sstevel@tonic-gate */ 21647c478bd9Sstevel@tonic-gate static int 21657c478bd9Sstevel@tonic-gate nvlist2rctlval(nvlist_t *nvl, rctl_val_t *rv) 21667c478bd9Sstevel@tonic-gate { 21677c478bd9Sstevel@tonic-gate nvpair_t *nvp = NULL; 21687c478bd9Sstevel@tonic-gate boolean_t priv_set = B_FALSE; 21697c478bd9Sstevel@tonic-gate boolean_t limit_set = B_FALSE; 21707c478bd9Sstevel@tonic-gate boolean_t action_set = B_FALSE; 21717c478bd9Sstevel@tonic-gate 21727c478bd9Sstevel@tonic-gate while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) { 21737c478bd9Sstevel@tonic-gate const char *name; 21747c478bd9Sstevel@tonic-gate uint64_t ui64; 21757c478bd9Sstevel@tonic-gate 21767c478bd9Sstevel@tonic-gate name = nvpair_name(nvp); 21777c478bd9Sstevel@tonic-gate if (nvpair_type(nvp) != DATA_TYPE_UINT64) 21787c478bd9Sstevel@tonic-gate return (EINVAL); 21797c478bd9Sstevel@tonic-gate (void) nvpair_value_uint64(nvp, &ui64); 21807c478bd9Sstevel@tonic-gate if (strcmp(name, "privilege") == 0) { 21817c478bd9Sstevel@tonic-gate /* 21827c478bd9Sstevel@tonic-gate * Currently only privileged values are allowed, but 21837c478bd9Sstevel@tonic-gate * this may change in the future. 21847c478bd9Sstevel@tonic-gate */ 21857c478bd9Sstevel@tonic-gate if (ui64 != RCPRIV_PRIVILEGED) 21867c478bd9Sstevel@tonic-gate return (EINVAL); 21877c478bd9Sstevel@tonic-gate rv->rcv_privilege = ui64; 21887c478bd9Sstevel@tonic-gate priv_set = B_TRUE; 21897c478bd9Sstevel@tonic-gate } else if (strcmp(name, "limit") == 0) { 21907c478bd9Sstevel@tonic-gate rv->rcv_value = ui64; 21917c478bd9Sstevel@tonic-gate limit_set = B_TRUE; 21927c478bd9Sstevel@tonic-gate } else if (strcmp(name, "action") == 0) { 21937c478bd9Sstevel@tonic-gate if (ui64 != RCTL_LOCAL_NOACTION && 21947c478bd9Sstevel@tonic-gate ui64 != RCTL_LOCAL_DENY) 21957c478bd9Sstevel@tonic-gate return (EINVAL); 21967c478bd9Sstevel@tonic-gate rv->rcv_flagaction = ui64; 21977c478bd9Sstevel@tonic-gate action_set = B_TRUE; 21987c478bd9Sstevel@tonic-gate } else { 21997c478bd9Sstevel@tonic-gate return (EINVAL); 22007c478bd9Sstevel@tonic-gate } 22017c478bd9Sstevel@tonic-gate } 22027c478bd9Sstevel@tonic-gate 22037c478bd9Sstevel@tonic-gate if (!(priv_set && limit_set && action_set)) 22047c478bd9Sstevel@tonic-gate return (EINVAL); 22057c478bd9Sstevel@tonic-gate rv->rcv_action_signal = 0; 22067c478bd9Sstevel@tonic-gate rv->rcv_action_recipient = NULL; 22077c478bd9Sstevel@tonic-gate rv->rcv_action_recip_pid = -1; 22087c478bd9Sstevel@tonic-gate rv->rcv_firing_time = 0; 22097c478bd9Sstevel@tonic-gate 22107c478bd9Sstevel@tonic-gate return (0); 22117c478bd9Sstevel@tonic-gate } 22127c478bd9Sstevel@tonic-gate 2213*3f2f09c1Sdp /* 2214*3f2f09c1Sdp * Non-global zone version of start_init. 2215*3f2f09c1Sdp */ 22167c478bd9Sstevel@tonic-gate void 2217*3f2f09c1Sdp zone_start_init(void) 22187c478bd9Sstevel@tonic-gate { 22197c478bd9Sstevel@tonic-gate proc_t *p = ttoproc(curthread); 22207c478bd9Sstevel@tonic-gate 2221*3f2f09c1Sdp ASSERT(!INGLOBALZONE(curproc)); 22227c478bd9Sstevel@tonic-gate 22237c478bd9Sstevel@tonic-gate /* 2224*3f2f09c1Sdp * We maintain zone_boot_err so that we can return the cause of the 2225*3f2f09c1Sdp * failure back to the caller of the zone_boot syscall. 22267c478bd9Sstevel@tonic-gate */ 2227*3f2f09c1Sdp p->p_zone->zone_boot_err = start_init_common(); 22287c478bd9Sstevel@tonic-gate 22297c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 22307c478bd9Sstevel@tonic-gate if (p->p_zone->zone_boot_err != 0) { 22317c478bd9Sstevel@tonic-gate /* 22327c478bd9Sstevel@tonic-gate * Make sure we are still in the booting state-- we could have 22337c478bd9Sstevel@tonic-gate * raced and already be shutting down, or even further along. 22347c478bd9Sstevel@tonic-gate */ 22357c478bd9Sstevel@tonic-gate if (zone_status_get(p->p_zone) == ZONE_IS_BOOTING) 22367c478bd9Sstevel@tonic-gate zone_status_set(p->p_zone, ZONE_IS_SHUTTING_DOWN); 22377c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 22387c478bd9Sstevel@tonic-gate /* It's gone bad, dispose of the process */ 22397c478bd9Sstevel@tonic-gate if (proc_exit(CLD_EXITED, p->p_zone->zone_boot_err) != 0) { 224097eda132Sraf mutex_enter(&p->p_lock); 224197eda132Sraf ASSERT(p->p_flag & SEXITLWPS); 22427c478bd9Sstevel@tonic-gate lwp_exit(); 22437c478bd9Sstevel@tonic-gate } 22447c478bd9Sstevel@tonic-gate } else { 22457c478bd9Sstevel@tonic-gate if (zone_status_get(p->p_zone) == ZONE_IS_BOOTING) 22467c478bd9Sstevel@tonic-gate zone_status_set(p->p_zone, ZONE_IS_RUNNING); 22477c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 22487c478bd9Sstevel@tonic-gate /* cause the process to return to userland. */ 22497c478bd9Sstevel@tonic-gate lwp_rtt(); 22507c478bd9Sstevel@tonic-gate } 22517c478bd9Sstevel@tonic-gate } 22527c478bd9Sstevel@tonic-gate 22537c478bd9Sstevel@tonic-gate struct zsched_arg { 22547c478bd9Sstevel@tonic-gate zone_t *zone; 22557c478bd9Sstevel@tonic-gate nvlist_t *nvlist; 22567c478bd9Sstevel@tonic-gate }; 22577c478bd9Sstevel@tonic-gate 22587c478bd9Sstevel@tonic-gate /* 22597c478bd9Sstevel@tonic-gate * Per-zone "sched" workalike. The similarity to "sched" doesn't have 22607c478bd9Sstevel@tonic-gate * anything to do with scheduling, but rather with the fact that 22617c478bd9Sstevel@tonic-gate * per-zone kernel threads are parented to zsched, just like regular 22627c478bd9Sstevel@tonic-gate * kernel threads are parented to sched (p0). 22637c478bd9Sstevel@tonic-gate * 22647c478bd9Sstevel@tonic-gate * zsched is also responsible for launching init for the zone. 22657c478bd9Sstevel@tonic-gate */ 22667c478bd9Sstevel@tonic-gate static void 22677c478bd9Sstevel@tonic-gate zsched(void *arg) 22687c478bd9Sstevel@tonic-gate { 22697c478bd9Sstevel@tonic-gate struct zsched_arg *za = arg; 22707c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 22717c478bd9Sstevel@tonic-gate proc_t *initp = proc_init; 22727c478bd9Sstevel@tonic-gate zone_t *zone = za->zone; 22737c478bd9Sstevel@tonic-gate cred_t *cr, *oldcred; 22747c478bd9Sstevel@tonic-gate rctl_set_t *set; 22757c478bd9Sstevel@tonic-gate rctl_alloc_gp_t *gp; 22767c478bd9Sstevel@tonic-gate contract_t *ct = NULL; 22777c478bd9Sstevel@tonic-gate task_t *tk, *oldtk; 22787c478bd9Sstevel@tonic-gate rctl_entity_p_t e; 22797c478bd9Sstevel@tonic-gate kproject_t *pj; 22807c478bd9Sstevel@tonic-gate 22817c478bd9Sstevel@tonic-gate nvlist_t *nvl = za->nvlist; 22827c478bd9Sstevel@tonic-gate nvpair_t *nvp = NULL; 22837c478bd9Sstevel@tonic-gate 22847c478bd9Sstevel@tonic-gate bcopy("zsched", u.u_psargs, sizeof ("zsched")); 22857c478bd9Sstevel@tonic-gate bcopy("zsched", u.u_comm, sizeof ("zsched")); 22867c478bd9Sstevel@tonic-gate u.u_argc = 0; 22877c478bd9Sstevel@tonic-gate u.u_argv = NULL; 22887c478bd9Sstevel@tonic-gate u.u_envp = NULL; 22897c478bd9Sstevel@tonic-gate closeall(P_FINFO(pp)); 22907c478bd9Sstevel@tonic-gate 22917c478bd9Sstevel@tonic-gate /* 22927c478bd9Sstevel@tonic-gate * We are this zone's "zsched" process. As the zone isn't generally 22937c478bd9Sstevel@tonic-gate * visible yet we don't need to grab any locks before initializing its 22947c478bd9Sstevel@tonic-gate * zone_proc pointer. 22957c478bd9Sstevel@tonic-gate */ 22967c478bd9Sstevel@tonic-gate zone_hold(zone); /* this hold is released by zone_destroy() */ 22977c478bd9Sstevel@tonic-gate zone->zone_zsched = pp; 22987c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 22997c478bd9Sstevel@tonic-gate pp->p_zone = zone; 23007c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 23017c478bd9Sstevel@tonic-gate 23027c478bd9Sstevel@tonic-gate /* 23037c478bd9Sstevel@tonic-gate * Disassociate process from its 'parent'; parent ourselves to init 23047c478bd9Sstevel@tonic-gate * (pid 1) and change other values as needed. 23057c478bd9Sstevel@tonic-gate */ 23067c478bd9Sstevel@tonic-gate sess_create(); 23077c478bd9Sstevel@tonic-gate 23087c478bd9Sstevel@tonic-gate mutex_enter(&pidlock); 23097c478bd9Sstevel@tonic-gate proc_detach(pp); 23107c478bd9Sstevel@tonic-gate pp->p_ppid = 1; 23117c478bd9Sstevel@tonic-gate pp->p_flag |= SZONETOP; 23127c478bd9Sstevel@tonic-gate pp->p_ancpid = 1; 23137c478bd9Sstevel@tonic-gate pp->p_parent = initp; 23147c478bd9Sstevel@tonic-gate pp->p_psibling = NULL; 23157c478bd9Sstevel@tonic-gate if (initp->p_child) 23167c478bd9Sstevel@tonic-gate initp->p_child->p_psibling = pp; 23177c478bd9Sstevel@tonic-gate pp->p_sibling = initp->p_child; 23187c478bd9Sstevel@tonic-gate initp->p_child = pp; 23197c478bd9Sstevel@tonic-gate 23207c478bd9Sstevel@tonic-gate /* Decrement what newproc() incremented. */ 23217c478bd9Sstevel@tonic-gate upcount_dec(crgetruid(CRED()), GLOBAL_ZONEID); 23227c478bd9Sstevel@tonic-gate /* 23237c478bd9Sstevel@tonic-gate * Our credentials are about to become kcred-like, so we don't care 23247c478bd9Sstevel@tonic-gate * about the caller's ruid. 23257c478bd9Sstevel@tonic-gate */ 23267c478bd9Sstevel@tonic-gate upcount_inc(crgetruid(kcred), zone->zone_id); 23277c478bd9Sstevel@tonic-gate mutex_exit(&pidlock); 23287c478bd9Sstevel@tonic-gate 23297c478bd9Sstevel@tonic-gate /* 23307c478bd9Sstevel@tonic-gate * getting out of global zone, so decrement lwp counts 23317c478bd9Sstevel@tonic-gate */ 23327c478bd9Sstevel@tonic-gate pj = pp->p_task->tk_proj; 23337c478bd9Sstevel@tonic-gate mutex_enter(&global_zone->zone_nlwps_lock); 23347c478bd9Sstevel@tonic-gate pj->kpj_nlwps -= pp->p_lwpcnt; 23357c478bd9Sstevel@tonic-gate global_zone->zone_nlwps -= pp->p_lwpcnt; 23367c478bd9Sstevel@tonic-gate mutex_exit(&global_zone->zone_nlwps_lock); 23377c478bd9Sstevel@tonic-gate 23387c478bd9Sstevel@tonic-gate /* 23397c478bd9Sstevel@tonic-gate * Create and join a new task in project '0' of this zone. 23407c478bd9Sstevel@tonic-gate * 23417c478bd9Sstevel@tonic-gate * We don't need to call holdlwps() since we know we're the only lwp in 23427c478bd9Sstevel@tonic-gate * this process. 23437c478bd9Sstevel@tonic-gate * 23447c478bd9Sstevel@tonic-gate * task_join() returns with p_lock held. 23457c478bd9Sstevel@tonic-gate */ 23467c478bd9Sstevel@tonic-gate tk = task_create(0, zone); 23477c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 23487c478bd9Sstevel@tonic-gate oldtk = task_join(tk, 0); 23497c478bd9Sstevel@tonic-gate mutex_exit(&curproc->p_lock); 23507c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 23517c478bd9Sstevel@tonic-gate task_rele(oldtk); 23527c478bd9Sstevel@tonic-gate 23537c478bd9Sstevel@tonic-gate /* 23547c478bd9Sstevel@tonic-gate * add lwp counts to zsched's zone, and increment project's task count 23557c478bd9Sstevel@tonic-gate * due to the task created in the above tasksys_settaskid 23567c478bd9Sstevel@tonic-gate */ 23577c478bd9Sstevel@tonic-gate pj = pp->p_task->tk_proj; 23587c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_nlwps_lock); 23597c478bd9Sstevel@tonic-gate pj->kpj_nlwps += pp->p_lwpcnt; 23607c478bd9Sstevel@tonic-gate pj->kpj_ntasks += 1; 23617c478bd9Sstevel@tonic-gate zone->zone_nlwps += pp->p_lwpcnt; 23627c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_nlwps_lock); 23637c478bd9Sstevel@tonic-gate 23647c478bd9Sstevel@tonic-gate /* 23657c478bd9Sstevel@tonic-gate * The process was created by a process in the global zone, hence the 23667c478bd9Sstevel@tonic-gate * credentials are wrong. We might as well have kcred-ish credentials. 23677c478bd9Sstevel@tonic-gate */ 23687c478bd9Sstevel@tonic-gate cr = zone->zone_kcred; 23697c478bd9Sstevel@tonic-gate crhold(cr); 23707c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_crlock); 23717c478bd9Sstevel@tonic-gate oldcred = pp->p_cred; 23727c478bd9Sstevel@tonic-gate pp->p_cred = cr; 23737c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_crlock); 23747c478bd9Sstevel@tonic-gate crfree(oldcred); 23757c478bd9Sstevel@tonic-gate 23767c478bd9Sstevel@tonic-gate /* 23777c478bd9Sstevel@tonic-gate * Hold credentials again (for thread) 23787c478bd9Sstevel@tonic-gate */ 23797c478bd9Sstevel@tonic-gate crhold(cr); 23807c478bd9Sstevel@tonic-gate 23817c478bd9Sstevel@tonic-gate /* 23827c478bd9Sstevel@tonic-gate * p_lwpcnt can't change since this is a kernel process. 23837c478bd9Sstevel@tonic-gate */ 23847c478bd9Sstevel@tonic-gate crset(pp, cr); 23857c478bd9Sstevel@tonic-gate 23867c478bd9Sstevel@tonic-gate /* 23877c478bd9Sstevel@tonic-gate * Chroot 23887c478bd9Sstevel@tonic-gate */ 23897c478bd9Sstevel@tonic-gate zone_chdir(zone->zone_rootvp, &PTOU(pp)->u_cdir, pp); 23907c478bd9Sstevel@tonic-gate zone_chdir(zone->zone_rootvp, &PTOU(pp)->u_rdir, pp); 23917c478bd9Sstevel@tonic-gate 23927c478bd9Sstevel@tonic-gate /* 23937c478bd9Sstevel@tonic-gate * Initialize zone's rctl set. 23947c478bd9Sstevel@tonic-gate */ 23957c478bd9Sstevel@tonic-gate set = rctl_set_create(); 23967c478bd9Sstevel@tonic-gate gp = rctl_set_init_prealloc(RCENTITY_ZONE); 23977c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 23987c478bd9Sstevel@tonic-gate e.rcep_p.zone = zone; 23997c478bd9Sstevel@tonic-gate e.rcep_t = RCENTITY_ZONE; 24007c478bd9Sstevel@tonic-gate zone->zone_rctls = rctl_set_init(RCENTITY_ZONE, pp, &e, set, gp); 24017c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 24027c478bd9Sstevel@tonic-gate rctl_prealloc_destroy(gp); 24037c478bd9Sstevel@tonic-gate 24047c478bd9Sstevel@tonic-gate /* 24057c478bd9Sstevel@tonic-gate * Apply the rctls passed in to zone_create(). This is basically a list 24067c478bd9Sstevel@tonic-gate * assignment: all of the old values are removed and the new ones 24077c478bd9Sstevel@tonic-gate * inserted. That is, if an empty list is passed in, all values are 24087c478bd9Sstevel@tonic-gate * removed. 24097c478bd9Sstevel@tonic-gate */ 24107c478bd9Sstevel@tonic-gate while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) { 24117c478bd9Sstevel@tonic-gate rctl_dict_entry_t *rde; 24127c478bd9Sstevel@tonic-gate rctl_hndl_t hndl; 24137c478bd9Sstevel@tonic-gate char *name; 24147c478bd9Sstevel@tonic-gate nvlist_t **nvlarray; 24157c478bd9Sstevel@tonic-gate uint_t i, nelem; 24167c478bd9Sstevel@tonic-gate int error; /* For ASSERT()s */ 24177c478bd9Sstevel@tonic-gate 24187c478bd9Sstevel@tonic-gate name = nvpair_name(nvp); 24197c478bd9Sstevel@tonic-gate hndl = rctl_hndl_lookup(name); 24207c478bd9Sstevel@tonic-gate ASSERT(hndl != -1); 24217c478bd9Sstevel@tonic-gate rde = rctl_dict_lookup_hndl(hndl); 24227c478bd9Sstevel@tonic-gate ASSERT(rde != NULL); 24237c478bd9Sstevel@tonic-gate 24247c478bd9Sstevel@tonic-gate for (; /* ever */; ) { 24257c478bd9Sstevel@tonic-gate rctl_val_t oval; 24267c478bd9Sstevel@tonic-gate 24277c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 24287c478bd9Sstevel@tonic-gate error = rctl_local_get(hndl, NULL, &oval, pp); 24297c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 24307c478bd9Sstevel@tonic-gate ASSERT(error == 0); /* Can't fail for RCTL_FIRST */ 24317c478bd9Sstevel@tonic-gate ASSERT(oval.rcv_privilege != RCPRIV_BASIC); 24327c478bd9Sstevel@tonic-gate if (oval.rcv_privilege == RCPRIV_SYSTEM) 24337c478bd9Sstevel@tonic-gate break; 24347c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 24357c478bd9Sstevel@tonic-gate error = rctl_local_delete(hndl, &oval, pp); 24367c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 24377c478bd9Sstevel@tonic-gate ASSERT(error == 0); 24387c478bd9Sstevel@tonic-gate } 24397c478bd9Sstevel@tonic-gate error = nvpair_value_nvlist_array(nvp, &nvlarray, &nelem); 24407c478bd9Sstevel@tonic-gate ASSERT(error == 0); 24417c478bd9Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 24427c478bd9Sstevel@tonic-gate rctl_val_t *nvalp; 24437c478bd9Sstevel@tonic-gate 24447c478bd9Sstevel@tonic-gate nvalp = kmem_cache_alloc(rctl_val_cache, KM_SLEEP); 24457c478bd9Sstevel@tonic-gate error = nvlist2rctlval(nvlarray[i], nvalp); 24467c478bd9Sstevel@tonic-gate ASSERT(error == 0); 24477c478bd9Sstevel@tonic-gate /* 24487c478bd9Sstevel@tonic-gate * rctl_local_insert can fail if the value being 24497c478bd9Sstevel@tonic-gate * inserted is a duplicate; this is OK. 24507c478bd9Sstevel@tonic-gate */ 24517c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 24527c478bd9Sstevel@tonic-gate if (rctl_local_insert(hndl, nvalp, pp) != 0) 24537c478bd9Sstevel@tonic-gate kmem_cache_free(rctl_val_cache, nvalp); 24547c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 24557c478bd9Sstevel@tonic-gate } 24567c478bd9Sstevel@tonic-gate } 24577c478bd9Sstevel@tonic-gate /* 24587c478bd9Sstevel@tonic-gate * Tell the world that we're done setting up. 24597c478bd9Sstevel@tonic-gate * 24607c478bd9Sstevel@tonic-gate * At this point we want to set the zone status to ZONE_IS_READY 24617c478bd9Sstevel@tonic-gate * and atomically set the zone's processor set visibility. Once 24627c478bd9Sstevel@tonic-gate * we drop pool_lock() this zone will automatically get updated 24637c478bd9Sstevel@tonic-gate * to reflect any future changes to the pools configuration. 24647c478bd9Sstevel@tonic-gate */ 24657c478bd9Sstevel@tonic-gate pool_lock(); 24667c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 24677c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 24687c478bd9Sstevel@tonic-gate zone_uniqid(zone); 24697c478bd9Sstevel@tonic-gate zone_zsd_configure(zone); 24707c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED) 24717c478bd9Sstevel@tonic-gate zone_pset_set(zone, pool_default->pool_pset->pset_id); 24727c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 24737c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) == ZONE_IS_UNINITIALIZED); 24747c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_READY); 24757c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 24767c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 24777c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 24787c478bd9Sstevel@tonic-gate pool_unlock(); 24797c478bd9Sstevel@tonic-gate 24807c478bd9Sstevel@tonic-gate /* 24817c478bd9Sstevel@tonic-gate * Once we see the zone transition to the ZONE_IS_BOOTING state, 24827c478bd9Sstevel@tonic-gate * we launch init, and set the state to running. 24837c478bd9Sstevel@tonic-gate */ 24847c478bd9Sstevel@tonic-gate zone_status_wait_cpr(zone, ZONE_IS_BOOTING, "zsched"); 24857c478bd9Sstevel@tonic-gate 24867c478bd9Sstevel@tonic-gate if (zone_status_get(zone) == ZONE_IS_BOOTING) { 24877c478bd9Sstevel@tonic-gate id_t cid; 24887c478bd9Sstevel@tonic-gate 24897c478bd9Sstevel@tonic-gate /* 24907c478bd9Sstevel@tonic-gate * Ok, this is a little complicated. We need to grab the 24917c478bd9Sstevel@tonic-gate * zone's pool's scheduling class ID; note that by now, we 24927c478bd9Sstevel@tonic-gate * are already bound to a pool if we need to be (zoneadmd 24937c478bd9Sstevel@tonic-gate * will have done that to us while we're in the READY 24947c478bd9Sstevel@tonic-gate * state). *But* the scheduling class for the zone's 'init' 24957c478bd9Sstevel@tonic-gate * must be explicitly passed to newproc, which doesn't 24967c478bd9Sstevel@tonic-gate * respect pool bindings. 24977c478bd9Sstevel@tonic-gate * 24987c478bd9Sstevel@tonic-gate * We hold the pool_lock across the call to newproc() to 24997c478bd9Sstevel@tonic-gate * close the obvious race: the pool's scheduling class 25007c478bd9Sstevel@tonic-gate * could change before we manage to create the LWP with 25017c478bd9Sstevel@tonic-gate * classid 'cid'. 25027c478bd9Sstevel@tonic-gate */ 25037c478bd9Sstevel@tonic-gate pool_lock(); 25047c478bd9Sstevel@tonic-gate cid = pool_get_class(zone->zone_pool); 25057c478bd9Sstevel@tonic-gate if (cid == -1) 25067c478bd9Sstevel@tonic-gate cid = defaultcid; 25077c478bd9Sstevel@tonic-gate 25087c478bd9Sstevel@tonic-gate /* 25097c478bd9Sstevel@tonic-gate * If this fails, zone_boot will ultimately fail. The 25107c478bd9Sstevel@tonic-gate * state of the zone will be set to SHUTTING_DOWN-- userland 25117c478bd9Sstevel@tonic-gate * will have to tear down the zone, and fail, or try again. 25127c478bd9Sstevel@tonic-gate */ 2513*3f2f09c1Sdp if ((zone->zone_boot_err = newproc(zone_start_init, NULL, cid, 25147c478bd9Sstevel@tonic-gate minclsyspri - 1, &ct)) != 0) { 25157c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 25167c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_SHUTTING_DOWN); 25177c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 25187c478bd9Sstevel@tonic-gate } 25197c478bd9Sstevel@tonic-gate pool_unlock(); 25207c478bd9Sstevel@tonic-gate } 25217c478bd9Sstevel@tonic-gate 25227c478bd9Sstevel@tonic-gate /* 25237c478bd9Sstevel@tonic-gate * Wait for zone_destroy() to be called. This is what we spend 25247c478bd9Sstevel@tonic-gate * most of our life doing. 25257c478bd9Sstevel@tonic-gate */ 25267c478bd9Sstevel@tonic-gate zone_status_wait_cpr(zone, ZONE_IS_DYING, "zsched"); 25277c478bd9Sstevel@tonic-gate 25287c478bd9Sstevel@tonic-gate if (ct) 25297c478bd9Sstevel@tonic-gate /* 25307c478bd9Sstevel@tonic-gate * At this point the process contract should be empty. 25317c478bd9Sstevel@tonic-gate * (Though if it isn't, it's not the end of the world.) 25327c478bd9Sstevel@tonic-gate */ 25337c478bd9Sstevel@tonic-gate VERIFY(contract_abandon(ct, curproc, B_TRUE) == 0); 25347c478bd9Sstevel@tonic-gate 25357c478bd9Sstevel@tonic-gate /* 25367c478bd9Sstevel@tonic-gate * Allow kcred to be freed when all referring processes 25377c478bd9Sstevel@tonic-gate * (including this one) go away. We can't just do this in 25387c478bd9Sstevel@tonic-gate * zone_free because we need to wait for the zone_cred_ref to 25397c478bd9Sstevel@tonic-gate * drop to 0 before calling zone_free, and the existence of 25407c478bd9Sstevel@tonic-gate * zone_kcred will prevent that. Thus, we call crfree here to 25417c478bd9Sstevel@tonic-gate * balance the crdup in zone_create. The crhold calls earlier 25427c478bd9Sstevel@tonic-gate * in zsched will be dropped when the thread and process exit. 25437c478bd9Sstevel@tonic-gate */ 25447c478bd9Sstevel@tonic-gate crfree(zone->zone_kcred); 25457c478bd9Sstevel@tonic-gate zone->zone_kcred = NULL; 25467c478bd9Sstevel@tonic-gate 25477c478bd9Sstevel@tonic-gate exit(CLD_EXITED, 0); 25487c478bd9Sstevel@tonic-gate } 25497c478bd9Sstevel@tonic-gate 25507c478bd9Sstevel@tonic-gate /* 25517c478bd9Sstevel@tonic-gate * Helper function to determine if there are any submounts of the 25527c478bd9Sstevel@tonic-gate * provided path. Used to make sure the zone doesn't "inherit" any 25537c478bd9Sstevel@tonic-gate * mounts from before it is created. 25547c478bd9Sstevel@tonic-gate */ 25557c478bd9Sstevel@tonic-gate static uint_t 25567c478bd9Sstevel@tonic-gate zone_mount_count(const char *rootpath) 25577c478bd9Sstevel@tonic-gate { 25587c478bd9Sstevel@tonic-gate vfs_t *vfsp; 25597c478bd9Sstevel@tonic-gate uint_t count = 0; 25607c478bd9Sstevel@tonic-gate size_t rootpathlen = strlen(rootpath); 25617c478bd9Sstevel@tonic-gate 25627c478bd9Sstevel@tonic-gate /* 25637c478bd9Sstevel@tonic-gate * Holding zonehash_lock prevents race conditions with 25647c478bd9Sstevel@tonic-gate * vfs_list_add()/vfs_list_remove() since we serialize with 25657c478bd9Sstevel@tonic-gate * zone_find_by_path(). 25667c478bd9Sstevel@tonic-gate */ 25677c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 25687c478bd9Sstevel@tonic-gate /* 25697c478bd9Sstevel@tonic-gate * The rootpath must end with a '/' 25707c478bd9Sstevel@tonic-gate */ 25717c478bd9Sstevel@tonic-gate ASSERT(rootpath[rootpathlen - 1] == '/'); 25727c478bd9Sstevel@tonic-gate 25737c478bd9Sstevel@tonic-gate /* 25747c478bd9Sstevel@tonic-gate * This intentionally does not count the rootpath itself if that 25757c478bd9Sstevel@tonic-gate * happens to be a mount point. 25767c478bd9Sstevel@tonic-gate */ 25777c478bd9Sstevel@tonic-gate vfs_list_read_lock(); 25787c478bd9Sstevel@tonic-gate vfsp = rootvfs; 25797c478bd9Sstevel@tonic-gate do { 25807c478bd9Sstevel@tonic-gate if (strncmp(rootpath, refstr_value(vfsp->vfs_mntpt), 25817c478bd9Sstevel@tonic-gate rootpathlen) == 0) 25827c478bd9Sstevel@tonic-gate count++; 25837c478bd9Sstevel@tonic-gate vfsp = vfsp->vfs_next; 25847c478bd9Sstevel@tonic-gate } while (vfsp != rootvfs); 25857c478bd9Sstevel@tonic-gate vfs_list_unlock(); 25867c478bd9Sstevel@tonic-gate return (count); 25877c478bd9Sstevel@tonic-gate } 25887c478bd9Sstevel@tonic-gate 25897c478bd9Sstevel@tonic-gate /* 25907c478bd9Sstevel@tonic-gate * Helper function to make sure that a zone created on 'rootpath' 25917c478bd9Sstevel@tonic-gate * wouldn't end up containing other zones' rootpaths. 25927c478bd9Sstevel@tonic-gate */ 25937c478bd9Sstevel@tonic-gate static boolean_t 25947c478bd9Sstevel@tonic-gate zone_is_nested(const char *rootpath) 25957c478bd9Sstevel@tonic-gate { 25967c478bd9Sstevel@tonic-gate zone_t *zone; 25977c478bd9Sstevel@tonic-gate size_t rootpathlen = strlen(rootpath); 25987c478bd9Sstevel@tonic-gate size_t len; 25997c478bd9Sstevel@tonic-gate 26007c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&zonehash_lock)); 26017c478bd9Sstevel@tonic-gate 26027c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 26037c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) { 26047c478bd9Sstevel@tonic-gate if (zone == global_zone) 26057c478bd9Sstevel@tonic-gate continue; 26067c478bd9Sstevel@tonic-gate len = strlen(zone->zone_rootpath); 26077c478bd9Sstevel@tonic-gate if (strncmp(rootpath, zone->zone_rootpath, 26087c478bd9Sstevel@tonic-gate MIN(rootpathlen, len)) == 0) 26097c478bd9Sstevel@tonic-gate return (B_TRUE); 26107c478bd9Sstevel@tonic-gate } 26117c478bd9Sstevel@tonic-gate return (B_FALSE); 26127c478bd9Sstevel@tonic-gate } 26137c478bd9Sstevel@tonic-gate 26147c478bd9Sstevel@tonic-gate static int 2615821c4a97Sdp zone_set_privset(zone_t *zone, const priv_set_t *zone_privs, 2616821c4a97Sdp size_t zone_privssz) 26177c478bd9Sstevel@tonic-gate { 26187c478bd9Sstevel@tonic-gate priv_set_t *privs = kmem_alloc(sizeof (priv_set_t), KM_SLEEP); 26197c478bd9Sstevel@tonic-gate 2620821c4a97Sdp if (zone_privssz < sizeof (priv_set_t)) 2621821c4a97Sdp return (set_errno(ENOMEM)); 2622821c4a97Sdp 26237c478bd9Sstevel@tonic-gate if (copyin(zone_privs, privs, sizeof (priv_set_t))) { 26247c478bd9Sstevel@tonic-gate kmem_free(privs, sizeof (priv_set_t)); 26257c478bd9Sstevel@tonic-gate return (EFAULT); 26267c478bd9Sstevel@tonic-gate } 26277c478bd9Sstevel@tonic-gate 26287c478bd9Sstevel@tonic-gate zone->zone_privset = privs; 26297c478bd9Sstevel@tonic-gate return (0); 26307c478bd9Sstevel@tonic-gate } 26317c478bd9Sstevel@tonic-gate 26327c478bd9Sstevel@tonic-gate /* 26337c478bd9Sstevel@tonic-gate * We make creative use of nvlists to pass in rctls from userland. The list is 26347c478bd9Sstevel@tonic-gate * a list of the following structures: 26357c478bd9Sstevel@tonic-gate * 26367c478bd9Sstevel@tonic-gate * (name = rctl_name, value = nvpair_list_array) 26377c478bd9Sstevel@tonic-gate * 26387c478bd9Sstevel@tonic-gate * Where each element of the nvpair_list_array is of the form: 26397c478bd9Sstevel@tonic-gate * 26407c478bd9Sstevel@tonic-gate * [(name = "privilege", value = RCPRIV_PRIVILEGED), 26417c478bd9Sstevel@tonic-gate * (name = "limit", value = uint64_t), 26427c478bd9Sstevel@tonic-gate * (name = "action", value = (RCTL_LOCAL_NOACTION || RCTL_LOCAL_DENY))] 26437c478bd9Sstevel@tonic-gate */ 26447c478bd9Sstevel@tonic-gate static int 26457c478bd9Sstevel@tonic-gate parse_rctls(caddr_t ubuf, size_t buflen, nvlist_t **nvlp) 26467c478bd9Sstevel@tonic-gate { 26477c478bd9Sstevel@tonic-gate nvpair_t *nvp = NULL; 26487c478bd9Sstevel@tonic-gate nvlist_t *nvl = NULL; 26497c478bd9Sstevel@tonic-gate char *kbuf; 26507c478bd9Sstevel@tonic-gate int error; 26517c478bd9Sstevel@tonic-gate rctl_val_t rv; 26527c478bd9Sstevel@tonic-gate 26537c478bd9Sstevel@tonic-gate *nvlp = NULL; 26547c478bd9Sstevel@tonic-gate 26557c478bd9Sstevel@tonic-gate if (buflen == 0) 26567c478bd9Sstevel@tonic-gate return (0); 26577c478bd9Sstevel@tonic-gate 26587c478bd9Sstevel@tonic-gate if ((kbuf = kmem_alloc(buflen, KM_NOSLEEP)) == NULL) 26597c478bd9Sstevel@tonic-gate return (ENOMEM); 26607c478bd9Sstevel@tonic-gate if (copyin(ubuf, kbuf, buflen)) { 26617c478bd9Sstevel@tonic-gate error = EFAULT; 26627c478bd9Sstevel@tonic-gate goto out; 26637c478bd9Sstevel@tonic-gate } 26647c478bd9Sstevel@tonic-gate if (nvlist_unpack(kbuf, buflen, &nvl, KM_SLEEP) != 0) { 26657c478bd9Sstevel@tonic-gate /* 26667c478bd9Sstevel@tonic-gate * nvl may have been allocated/free'd, but the value set to 26677c478bd9Sstevel@tonic-gate * non-NULL, so we reset it here. 26687c478bd9Sstevel@tonic-gate */ 26697c478bd9Sstevel@tonic-gate nvl = NULL; 26707c478bd9Sstevel@tonic-gate error = EINVAL; 26717c478bd9Sstevel@tonic-gate goto out; 26727c478bd9Sstevel@tonic-gate } 26737c478bd9Sstevel@tonic-gate while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) { 26747c478bd9Sstevel@tonic-gate rctl_dict_entry_t *rde; 26757c478bd9Sstevel@tonic-gate rctl_hndl_t hndl; 26767c478bd9Sstevel@tonic-gate nvlist_t **nvlarray; 26777c478bd9Sstevel@tonic-gate uint_t i, nelem; 26787c478bd9Sstevel@tonic-gate char *name; 26797c478bd9Sstevel@tonic-gate 26807c478bd9Sstevel@tonic-gate error = EINVAL; 26817c478bd9Sstevel@tonic-gate name = nvpair_name(nvp); 26827c478bd9Sstevel@tonic-gate if (strncmp(nvpair_name(nvp), "zone.", sizeof ("zone.") - 1) 26837c478bd9Sstevel@tonic-gate != 0 || nvpair_type(nvp) != DATA_TYPE_NVLIST_ARRAY) { 26847c478bd9Sstevel@tonic-gate goto out; 26857c478bd9Sstevel@tonic-gate } 26867c478bd9Sstevel@tonic-gate if ((hndl = rctl_hndl_lookup(name)) == -1) { 26877c478bd9Sstevel@tonic-gate goto out; 26887c478bd9Sstevel@tonic-gate } 26897c478bd9Sstevel@tonic-gate rde = rctl_dict_lookup_hndl(hndl); 26907c478bd9Sstevel@tonic-gate error = nvpair_value_nvlist_array(nvp, &nvlarray, &nelem); 26917c478bd9Sstevel@tonic-gate ASSERT(error == 0); 26927c478bd9Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 26937c478bd9Sstevel@tonic-gate if (error = nvlist2rctlval(nvlarray[i], &rv)) 26947c478bd9Sstevel@tonic-gate goto out; 26957c478bd9Sstevel@tonic-gate } 26967c478bd9Sstevel@tonic-gate if (rctl_invalid_value(rde, &rv)) { 26977c478bd9Sstevel@tonic-gate error = EINVAL; 26987c478bd9Sstevel@tonic-gate goto out; 26997c478bd9Sstevel@tonic-gate } 27007c478bd9Sstevel@tonic-gate } 27017c478bd9Sstevel@tonic-gate error = 0; 27027c478bd9Sstevel@tonic-gate *nvlp = nvl; 27037c478bd9Sstevel@tonic-gate out: 27047c478bd9Sstevel@tonic-gate kmem_free(kbuf, buflen); 27057c478bd9Sstevel@tonic-gate if (error && nvl != NULL) 27067c478bd9Sstevel@tonic-gate nvlist_free(nvl); 27077c478bd9Sstevel@tonic-gate return (error); 27087c478bd9Sstevel@tonic-gate } 27097c478bd9Sstevel@tonic-gate 27107c478bd9Sstevel@tonic-gate int 27117c478bd9Sstevel@tonic-gate zone_create_error(int er_error, int er_ext, int *er_out) { 27127c478bd9Sstevel@tonic-gate if (er_out != NULL) { 27137c478bd9Sstevel@tonic-gate if (copyout(&er_ext, er_out, sizeof (int))) { 27147c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 27157c478bd9Sstevel@tonic-gate } 27167c478bd9Sstevel@tonic-gate } 27177c478bd9Sstevel@tonic-gate return (set_errno(er_error)); 27187c478bd9Sstevel@tonic-gate } 27197c478bd9Sstevel@tonic-gate 272045916cd2Sjpk static int 272145916cd2Sjpk zone_set_label(zone_t *zone, const bslabel_t *lab, uint32_t doi) 272245916cd2Sjpk { 272345916cd2Sjpk ts_label_t *tsl; 272445916cd2Sjpk bslabel_t blab; 272545916cd2Sjpk 272645916cd2Sjpk /* Get label from user */ 272745916cd2Sjpk if (copyin(lab, &blab, sizeof (blab)) != 0) 272845916cd2Sjpk return (EFAULT); 272945916cd2Sjpk tsl = labelalloc(&blab, doi, KM_NOSLEEP); 273045916cd2Sjpk if (tsl == NULL) 273145916cd2Sjpk return (ENOMEM); 273245916cd2Sjpk 273345916cd2Sjpk zone->zone_slabel = tsl; 273445916cd2Sjpk return (0); 273545916cd2Sjpk } 273645916cd2Sjpk 2737fa9e4066Sahrens /* 2738fa9e4066Sahrens * Parses a comma-separated list of ZFS datasets into a per-zone dictionary. 2739fa9e4066Sahrens */ 2740fa9e4066Sahrens static int 2741fa9e4066Sahrens parse_zfs(zone_t *zone, caddr_t ubuf, size_t buflen) 2742fa9e4066Sahrens { 2743fa9e4066Sahrens char *kbuf; 2744fa9e4066Sahrens char *dataset, *next; 2745fa9e4066Sahrens zone_dataset_t *zd; 2746fa9e4066Sahrens size_t len; 2747fa9e4066Sahrens 2748fa9e4066Sahrens if (ubuf == NULL || buflen == 0) 2749fa9e4066Sahrens return (0); 2750fa9e4066Sahrens 2751fa9e4066Sahrens if ((kbuf = kmem_alloc(buflen, KM_NOSLEEP)) == NULL) 2752fa9e4066Sahrens return (ENOMEM); 2753fa9e4066Sahrens 2754fa9e4066Sahrens if (copyin(ubuf, kbuf, buflen) != 0) { 2755fa9e4066Sahrens kmem_free(kbuf, buflen); 2756fa9e4066Sahrens return (EFAULT); 2757fa9e4066Sahrens } 2758fa9e4066Sahrens 2759fa9e4066Sahrens dataset = next = kbuf; 2760fa9e4066Sahrens for (;;) { 2761fa9e4066Sahrens zd = kmem_alloc(sizeof (zone_dataset_t), KM_SLEEP); 2762fa9e4066Sahrens 2763fa9e4066Sahrens next = strchr(dataset, ','); 2764fa9e4066Sahrens 2765fa9e4066Sahrens if (next == NULL) 2766fa9e4066Sahrens len = strlen(dataset); 2767fa9e4066Sahrens else 2768fa9e4066Sahrens len = next - dataset; 2769fa9e4066Sahrens 2770fa9e4066Sahrens zd->zd_dataset = kmem_alloc(len + 1, KM_SLEEP); 2771fa9e4066Sahrens bcopy(dataset, zd->zd_dataset, len); 2772fa9e4066Sahrens zd->zd_dataset[len] = '\0'; 2773fa9e4066Sahrens 2774fa9e4066Sahrens list_insert_head(&zone->zone_datasets, zd); 2775fa9e4066Sahrens 2776fa9e4066Sahrens if (next == NULL) 2777fa9e4066Sahrens break; 2778fa9e4066Sahrens 2779fa9e4066Sahrens dataset = next + 1; 2780fa9e4066Sahrens } 2781fa9e4066Sahrens 2782fa9e4066Sahrens kmem_free(kbuf, buflen); 2783fa9e4066Sahrens return (0); 2784fa9e4066Sahrens } 2785fa9e4066Sahrens 27867c478bd9Sstevel@tonic-gate /* 27877c478bd9Sstevel@tonic-gate * System call to create/initialize a new zone named 'zone_name', rooted 27887c478bd9Sstevel@tonic-gate * at 'zone_root', with a zone-wide privilege limit set of 'zone_privs', 278945916cd2Sjpk * and initialized with the zone-wide rctls described in 'rctlbuf', and 279045916cd2Sjpk * with labeling set by 'match', 'doi', and 'label'. 27917c478bd9Sstevel@tonic-gate * 27927c478bd9Sstevel@tonic-gate * If extended error is non-null, we may use it to return more detailed 27937c478bd9Sstevel@tonic-gate * error information. 27947c478bd9Sstevel@tonic-gate */ 27957c478bd9Sstevel@tonic-gate static zoneid_t 27967c478bd9Sstevel@tonic-gate zone_create(const char *zone_name, const char *zone_root, 2797821c4a97Sdp const priv_set_t *zone_privs, size_t zone_privssz, 2798821c4a97Sdp caddr_t rctlbuf, size_t rctlbufsz, 279945916cd2Sjpk caddr_t zfsbuf, size_t zfsbufsz, int *extended_error, 280045916cd2Sjpk int match, uint32_t doi, const bslabel_t *label) 28017c478bd9Sstevel@tonic-gate { 28027c478bd9Sstevel@tonic-gate struct zsched_arg zarg; 28037c478bd9Sstevel@tonic-gate nvlist_t *rctls = NULL; 28047c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 28057c478bd9Sstevel@tonic-gate zone_t *zone, *ztmp; 28067c478bd9Sstevel@tonic-gate zoneid_t zoneid; 28077c478bd9Sstevel@tonic-gate int error; 28087c478bd9Sstevel@tonic-gate int error2 = 0; 28097c478bd9Sstevel@tonic-gate char *str; 28107c478bd9Sstevel@tonic-gate cred_t *zkcr; 281148451833Scarlsonj boolean_t insert_label_hash; 28127c478bd9Sstevel@tonic-gate 28137c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 28147c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 28157c478bd9Sstevel@tonic-gate 28167c478bd9Sstevel@tonic-gate /* can't boot zone from within chroot environment */ 28177c478bd9Sstevel@tonic-gate if (PTOU(pp)->u_rdir != NULL && PTOU(pp)->u_rdir != rootdir) 28187c478bd9Sstevel@tonic-gate return (zone_create_error(ENOTSUP, ZE_CHROOTED, 2819821c4a97Sdp extended_error)); 28207c478bd9Sstevel@tonic-gate 28217c478bd9Sstevel@tonic-gate zone = kmem_zalloc(sizeof (zone_t), KM_SLEEP); 28227c478bd9Sstevel@tonic-gate zoneid = zone->zone_id = id_alloc(zoneid_space); 28237c478bd9Sstevel@tonic-gate zone->zone_status = ZONE_IS_UNINITIALIZED; 28247c478bd9Sstevel@tonic-gate zone->zone_pool = pool_default; 28257c478bd9Sstevel@tonic-gate zone->zone_pool_mod = gethrtime(); 28267c478bd9Sstevel@tonic-gate zone->zone_psetid = ZONE_PS_INVAL; 28277c478bd9Sstevel@tonic-gate zone->zone_ncpus = 0; 28287c478bd9Sstevel@tonic-gate zone->zone_ncpus_online = 0; 28297c478bd9Sstevel@tonic-gate mutex_init(&zone->zone_lock, NULL, MUTEX_DEFAULT, NULL); 28307c478bd9Sstevel@tonic-gate mutex_init(&zone->zone_nlwps_lock, NULL, MUTEX_DEFAULT, NULL); 28317c478bd9Sstevel@tonic-gate cv_init(&zone->zone_cv, NULL, CV_DEFAULT, NULL); 28327c478bd9Sstevel@tonic-gate list_create(&zone->zone_zsd, sizeof (struct zsd_entry), 28337c478bd9Sstevel@tonic-gate offsetof(struct zsd_entry, zsd_linkage)); 2834fa9e4066Sahrens list_create(&zone->zone_datasets, sizeof (zone_dataset_t), 2835fa9e4066Sahrens offsetof(zone_dataset_t, zd_linkage)); 283645916cd2Sjpk rw_init(&zone->zone_mlps.mlpl_rwlock, NULL, RW_DEFAULT, NULL); 28377c478bd9Sstevel@tonic-gate 28387c478bd9Sstevel@tonic-gate if ((error = zone_set_name(zone, zone_name)) != 0) { 28397c478bd9Sstevel@tonic-gate zone_free(zone); 28407c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 28417c478bd9Sstevel@tonic-gate } 28427c478bd9Sstevel@tonic-gate 28437c478bd9Sstevel@tonic-gate if ((error = zone_set_root(zone, zone_root)) != 0) { 28447c478bd9Sstevel@tonic-gate zone_free(zone); 28457c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 28467c478bd9Sstevel@tonic-gate } 2847821c4a97Sdp if ((error = zone_set_privset(zone, zone_privs, zone_privssz)) != 0) { 28487c478bd9Sstevel@tonic-gate zone_free(zone); 28497c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 28507c478bd9Sstevel@tonic-gate } 28517c478bd9Sstevel@tonic-gate 28527c478bd9Sstevel@tonic-gate /* initialize node name to be the same as zone name */ 28537c478bd9Sstevel@tonic-gate zone->zone_nodename = kmem_alloc(_SYS_NMLN, KM_SLEEP); 28547c478bd9Sstevel@tonic-gate (void) strncpy(zone->zone_nodename, zone->zone_name, _SYS_NMLN); 28557c478bd9Sstevel@tonic-gate zone->zone_nodename[_SYS_NMLN - 1] = '\0'; 28567c478bd9Sstevel@tonic-gate 28577c478bd9Sstevel@tonic-gate zone->zone_domain = kmem_alloc(_SYS_NMLN, KM_SLEEP); 28587c478bd9Sstevel@tonic-gate zone->zone_domain[0] = '\0'; 28597c478bd9Sstevel@tonic-gate zone->zone_shares = 1; 28607c478bd9Sstevel@tonic-gate zone->zone_bootargs = NULL; 2861*3f2f09c1Sdp zone->zone_initname = 2862*3f2f09c1Sdp kmem_alloc(strlen(zone_default_initname) + 1, KM_SLEEP); 2863*3f2f09c1Sdp (void) strcpy(zone->zone_initname, zone_default_initname); 28647c478bd9Sstevel@tonic-gate 28657c478bd9Sstevel@tonic-gate /* 28667c478bd9Sstevel@tonic-gate * Zsched initializes the rctls. 28677c478bd9Sstevel@tonic-gate */ 28687c478bd9Sstevel@tonic-gate zone->zone_rctls = NULL; 28697c478bd9Sstevel@tonic-gate 28707c478bd9Sstevel@tonic-gate if ((error = parse_rctls(rctlbuf, rctlbufsz, &rctls)) != 0) { 28717c478bd9Sstevel@tonic-gate zone_free(zone); 28727c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 28737c478bd9Sstevel@tonic-gate } 28747c478bd9Sstevel@tonic-gate 2875fa9e4066Sahrens if ((error = parse_zfs(zone, zfsbuf, zfsbufsz)) != 0) { 2876fa9e4066Sahrens zone_free(zone); 2877fa9e4066Sahrens return (set_errno(error)); 2878fa9e4066Sahrens } 2879fa9e4066Sahrens 288045916cd2Sjpk /* 288145916cd2Sjpk * Read in the trusted system parameters: 288245916cd2Sjpk * match flag and sensitivity label. 288345916cd2Sjpk */ 288445916cd2Sjpk zone->zone_match = match; 288548451833Scarlsonj if (is_system_labeled() && !(zone->zone_flags & ZF_IS_SCRATCH)) { 288645916cd2Sjpk error = zone_set_label(zone, label, doi); 288745916cd2Sjpk if (error != 0) { 288845916cd2Sjpk zone_free(zone); 288945916cd2Sjpk return (set_errno(error)); 289045916cd2Sjpk } 289148451833Scarlsonj insert_label_hash = B_TRUE; 289245916cd2Sjpk } else { 289345916cd2Sjpk /* all zones get an admin_low label if system is not labeled */ 289445916cd2Sjpk zone->zone_slabel = l_admin_low; 289545916cd2Sjpk label_hold(l_admin_low); 289648451833Scarlsonj insert_label_hash = B_FALSE; 289745916cd2Sjpk } 289845916cd2Sjpk 28997c478bd9Sstevel@tonic-gate /* 29007c478bd9Sstevel@tonic-gate * Stop all lwps since that's what normally happens as part of fork(). 29017c478bd9Sstevel@tonic-gate * This needs to happen before we grab any locks to avoid deadlock 29027c478bd9Sstevel@tonic-gate * (another lwp in the process could be waiting for the held lock). 29037c478bd9Sstevel@tonic-gate */ 29047c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp && !holdlwps(SHOLDFORK)) { 29057c478bd9Sstevel@tonic-gate zone_free(zone); 29067c478bd9Sstevel@tonic-gate if (rctls) 29077c478bd9Sstevel@tonic-gate nvlist_free(rctls); 29087c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 29097c478bd9Sstevel@tonic-gate } 29107c478bd9Sstevel@tonic-gate 29117c478bd9Sstevel@tonic-gate if (block_mounts() == 0) { 29127c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 29137c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 29147c478bd9Sstevel@tonic-gate continuelwps(pp); 29157c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 29167c478bd9Sstevel@tonic-gate zone_free(zone); 29177c478bd9Sstevel@tonic-gate if (rctls) 29187c478bd9Sstevel@tonic-gate nvlist_free(rctls); 29197c478bd9Sstevel@tonic-gate return (zone_create_error(error, 0, extended_error)); 29207c478bd9Sstevel@tonic-gate } 29217c478bd9Sstevel@tonic-gate 29227c478bd9Sstevel@tonic-gate /* 29237c478bd9Sstevel@tonic-gate * Set up credential for kernel access. After this, any errors 29247c478bd9Sstevel@tonic-gate * should go through the dance in errout rather than calling 29257c478bd9Sstevel@tonic-gate * zone_free directly. 29267c478bd9Sstevel@tonic-gate */ 29277c478bd9Sstevel@tonic-gate zone->zone_kcred = crdup(kcred); 29287c478bd9Sstevel@tonic-gate crsetzone(zone->zone_kcred, zone); 29297c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_PPRIV(zone->zone_kcred)); 29307c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_EPRIV(zone->zone_kcred)); 29317c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_IPRIV(zone->zone_kcred)); 29327c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_LPRIV(zone->zone_kcred)); 29337c478bd9Sstevel@tonic-gate 29347c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 29357c478bd9Sstevel@tonic-gate /* 29367c478bd9Sstevel@tonic-gate * Make sure zone doesn't already exist. 293745916cd2Sjpk * 293845916cd2Sjpk * If the system and zone are labeled, 293945916cd2Sjpk * make sure no other zone exists that has the same label. 29407c478bd9Sstevel@tonic-gate */ 294145916cd2Sjpk if ((ztmp = zone_find_all_by_name(zone->zone_name)) != NULL || 294248451833Scarlsonj (insert_label_hash && 294345916cd2Sjpk (ztmp = zone_find_all_by_label(zone->zone_slabel)) != NULL)) { 29447c478bd9Sstevel@tonic-gate zone_status_t status; 29457c478bd9Sstevel@tonic-gate 29467c478bd9Sstevel@tonic-gate status = zone_status_get(ztmp); 29477c478bd9Sstevel@tonic-gate if (status == ZONE_IS_READY || status == ZONE_IS_RUNNING) 29487c478bd9Sstevel@tonic-gate error = EEXIST; 29497c478bd9Sstevel@tonic-gate else 29507c478bd9Sstevel@tonic-gate error = EBUSY; 29517c478bd9Sstevel@tonic-gate goto errout; 29527c478bd9Sstevel@tonic-gate } 29537c478bd9Sstevel@tonic-gate 29547c478bd9Sstevel@tonic-gate /* 29557c478bd9Sstevel@tonic-gate * Don't allow zone creations which would cause one zone's rootpath to 29567c478bd9Sstevel@tonic-gate * be accessible from that of another (non-global) zone. 29577c478bd9Sstevel@tonic-gate */ 29587c478bd9Sstevel@tonic-gate if (zone_is_nested(zone->zone_rootpath)) { 29597c478bd9Sstevel@tonic-gate error = EBUSY; 29607c478bd9Sstevel@tonic-gate goto errout; 29617c478bd9Sstevel@tonic-gate } 29627c478bd9Sstevel@tonic-gate 29637c478bd9Sstevel@tonic-gate ASSERT(zonecount != 0); /* check for leaks */ 29647c478bd9Sstevel@tonic-gate if (zonecount + 1 > maxzones) { 29657c478bd9Sstevel@tonic-gate error = ENOMEM; 29667c478bd9Sstevel@tonic-gate goto errout; 29677c478bd9Sstevel@tonic-gate } 29687c478bd9Sstevel@tonic-gate 29697c478bd9Sstevel@tonic-gate if (zone_mount_count(zone->zone_rootpath) != 0) { 29707c478bd9Sstevel@tonic-gate error = EBUSY; 29717c478bd9Sstevel@tonic-gate error2 = ZE_AREMOUNTS; 29727c478bd9Sstevel@tonic-gate goto errout; 29737c478bd9Sstevel@tonic-gate } 29747c478bd9Sstevel@tonic-gate 29757c478bd9Sstevel@tonic-gate /* 29767c478bd9Sstevel@tonic-gate * Zone is still incomplete, but we need to drop all locks while 29777c478bd9Sstevel@tonic-gate * zsched() initializes this zone's kernel process. We 29787c478bd9Sstevel@tonic-gate * optimistically add the zone to the hashtable and associated 29797c478bd9Sstevel@tonic-gate * lists so a parallel zone_create() doesn't try to create the 29807c478bd9Sstevel@tonic-gate * same zone. 29817c478bd9Sstevel@tonic-gate */ 29827c478bd9Sstevel@tonic-gate zonecount++; 29837c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyid, 29847c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_id, 29857c478bd9Sstevel@tonic-gate (mod_hash_val_t)(uintptr_t)zone); 29867c478bd9Sstevel@tonic-gate str = kmem_alloc(strlen(zone->zone_name) + 1, KM_SLEEP); 29877c478bd9Sstevel@tonic-gate (void) strcpy(str, zone->zone_name); 29887c478bd9Sstevel@tonic-gate (void) mod_hash_insert(zonehashbyname, (mod_hash_key_t)str, 29897c478bd9Sstevel@tonic-gate (mod_hash_val_t)(uintptr_t)zone); 299048451833Scarlsonj if (insert_label_hash) { 299145916cd2Sjpk (void) mod_hash_insert(zonehashbylabel, 299245916cd2Sjpk (mod_hash_key_t)zone->zone_slabel, (mod_hash_val_t)zone); 299348451833Scarlsonj zone->zone_flags |= ZF_HASHED_LABEL; 299445916cd2Sjpk } 299545916cd2Sjpk 29967c478bd9Sstevel@tonic-gate /* 29977c478bd9Sstevel@tonic-gate * Insert into active list. At this point there are no 'hold's 29987c478bd9Sstevel@tonic-gate * on the zone, but everyone else knows not to use it, so we can 29997c478bd9Sstevel@tonic-gate * continue to use it. zsched() will do a zone_hold() if the 30007c478bd9Sstevel@tonic-gate * newproc() is successful. 30017c478bd9Sstevel@tonic-gate */ 30027c478bd9Sstevel@tonic-gate list_insert_tail(&zone_active, zone); 30037c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 30047c478bd9Sstevel@tonic-gate 30057c478bd9Sstevel@tonic-gate zarg.zone = zone; 30067c478bd9Sstevel@tonic-gate zarg.nvlist = rctls; 30077c478bd9Sstevel@tonic-gate /* 30087c478bd9Sstevel@tonic-gate * The process, task, and project rctls are probably wrong; 30097c478bd9Sstevel@tonic-gate * we need an interface to get the default values of all rctls, 30107c478bd9Sstevel@tonic-gate * and initialize zsched appropriately. I'm not sure that that 30117c478bd9Sstevel@tonic-gate * makes much of a difference, though. 30127c478bd9Sstevel@tonic-gate */ 30137c478bd9Sstevel@tonic-gate if (error = newproc(zsched, (void *)&zarg, syscid, minclsyspri, NULL)) { 30147c478bd9Sstevel@tonic-gate /* 30157c478bd9Sstevel@tonic-gate * We need to undo all globally visible state. 30167c478bd9Sstevel@tonic-gate */ 30177c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 30187c478bd9Sstevel@tonic-gate list_remove(&zone_active, zone); 301948451833Scarlsonj if (zone->zone_flags & ZF_HASHED_LABEL) { 302045916cd2Sjpk ASSERT(zone->zone_slabel != NULL); 302145916cd2Sjpk (void) mod_hash_destroy(zonehashbylabel, 302245916cd2Sjpk (mod_hash_key_t)zone->zone_slabel); 302345916cd2Sjpk } 30247c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyname, 30257c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_name); 30267c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyid, 30277c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_id); 30287c478bd9Sstevel@tonic-gate ASSERT(zonecount > 1); 30297c478bd9Sstevel@tonic-gate zonecount--; 30307c478bd9Sstevel@tonic-gate goto errout; 30317c478bd9Sstevel@tonic-gate } 30327c478bd9Sstevel@tonic-gate 30337c478bd9Sstevel@tonic-gate /* 30347c478bd9Sstevel@tonic-gate * Zone creation can't fail from now on. 30357c478bd9Sstevel@tonic-gate */ 30367c478bd9Sstevel@tonic-gate 30377c478bd9Sstevel@tonic-gate /* 30387c478bd9Sstevel@tonic-gate * Let the other lwps continue. 30397c478bd9Sstevel@tonic-gate */ 30407c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 30417c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 30427c478bd9Sstevel@tonic-gate continuelwps(pp); 30437c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 30447c478bd9Sstevel@tonic-gate 30457c478bd9Sstevel@tonic-gate /* 30467c478bd9Sstevel@tonic-gate * Wait for zsched to finish initializing the zone. 30477c478bd9Sstevel@tonic-gate */ 30487c478bd9Sstevel@tonic-gate zone_status_wait(zone, ZONE_IS_READY); 30497c478bd9Sstevel@tonic-gate /* 30507c478bd9Sstevel@tonic-gate * The zone is fully visible, so we can let mounts progress. 30517c478bd9Sstevel@tonic-gate */ 30527c478bd9Sstevel@tonic-gate resume_mounts(); 30537c478bd9Sstevel@tonic-gate if (rctls) 30547c478bd9Sstevel@tonic-gate nvlist_free(rctls); 30557c478bd9Sstevel@tonic-gate 30567c478bd9Sstevel@tonic-gate return (zoneid); 30577c478bd9Sstevel@tonic-gate 30587c478bd9Sstevel@tonic-gate errout: 30597c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 30607c478bd9Sstevel@tonic-gate /* 30617c478bd9Sstevel@tonic-gate * Let the other lwps continue. 30627c478bd9Sstevel@tonic-gate */ 30637c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 30647c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 30657c478bd9Sstevel@tonic-gate continuelwps(pp); 30667c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 30677c478bd9Sstevel@tonic-gate 30687c478bd9Sstevel@tonic-gate resume_mounts(); 30697c478bd9Sstevel@tonic-gate if (rctls) 30707c478bd9Sstevel@tonic-gate nvlist_free(rctls); 30717c478bd9Sstevel@tonic-gate /* 30727c478bd9Sstevel@tonic-gate * There is currently one reference to the zone, a cred_ref from 30737c478bd9Sstevel@tonic-gate * zone_kcred. To free the zone, we call crfree, which will call 30747c478bd9Sstevel@tonic-gate * zone_cred_rele, which will call zone_free. 30757c478bd9Sstevel@tonic-gate */ 30767c478bd9Sstevel@tonic-gate ASSERT(zone->zone_cred_ref == 1); /* for zone_kcred */ 30777c478bd9Sstevel@tonic-gate ASSERT(zone->zone_kcred->cr_ref == 1); 30787c478bd9Sstevel@tonic-gate ASSERT(zone->zone_ref == 0); 30797c478bd9Sstevel@tonic-gate zkcr = zone->zone_kcred; 30807c478bd9Sstevel@tonic-gate zone->zone_kcred = NULL; 30817c478bd9Sstevel@tonic-gate crfree(zkcr); /* triggers call to zone_free */ 30827c478bd9Sstevel@tonic-gate return (zone_create_error(error, error2, extended_error)); 30837c478bd9Sstevel@tonic-gate } 30847c478bd9Sstevel@tonic-gate 30857c478bd9Sstevel@tonic-gate /* 30867c478bd9Sstevel@tonic-gate * Cause the zone to boot. This is pretty simple, since we let zoneadmd do 3087*3f2f09c1Sdp * the heavy lifting. initname is the path to the program to launch 3088*3f2f09c1Sdp * at the "top" of the zone; if this is NULL, we use the system default, 3089*3f2f09c1Sdp * which is stored at zone_default_initname. 30907c478bd9Sstevel@tonic-gate */ 30917c478bd9Sstevel@tonic-gate static int 3092*3f2f09c1Sdp zone_boot(zoneid_t zoneid) 30937c478bd9Sstevel@tonic-gate { 30947c478bd9Sstevel@tonic-gate int err; 30957c478bd9Sstevel@tonic-gate zone_t *zone; 30967c478bd9Sstevel@tonic-gate 30977c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 30987c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 30997c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 31007c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 31017c478bd9Sstevel@tonic-gate 31027c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 31037c478bd9Sstevel@tonic-gate /* 31047c478bd9Sstevel@tonic-gate * Look for zone under hash lock to prevent races with calls to 31057c478bd9Sstevel@tonic-gate * zone_shutdown, zone_destroy, etc. 31067c478bd9Sstevel@tonic-gate */ 31077c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 31087c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 31097c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 31107c478bd9Sstevel@tonic-gate } 31117c478bd9Sstevel@tonic-gate 31127c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 31137c478bd9Sstevel@tonic-gate if (zone_status_get(zone) != ZONE_IS_READY) { 31147c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 31157c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 31167c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 31177c478bd9Sstevel@tonic-gate } 31187c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_BOOTING); 31197c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 31207c478bd9Sstevel@tonic-gate 31217c478bd9Sstevel@tonic-gate zone_hold(zone); /* so we can use the zone_t later */ 31227c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 31237c478bd9Sstevel@tonic-gate 31247c478bd9Sstevel@tonic-gate if (zone_status_wait_sig(zone, ZONE_IS_RUNNING) == 0) { 31257c478bd9Sstevel@tonic-gate zone_rele(zone); 31267c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 31277c478bd9Sstevel@tonic-gate } 31287c478bd9Sstevel@tonic-gate 31297c478bd9Sstevel@tonic-gate /* 31307c478bd9Sstevel@tonic-gate * Boot (starting init) might have failed, in which case the zone 31317c478bd9Sstevel@tonic-gate * will go to the SHUTTING_DOWN state; an appropriate errno will 31327c478bd9Sstevel@tonic-gate * be placed in zone->zone_boot_err, and so we return that. 31337c478bd9Sstevel@tonic-gate */ 31347c478bd9Sstevel@tonic-gate err = zone->zone_boot_err; 31357c478bd9Sstevel@tonic-gate zone_rele(zone); 31367c478bd9Sstevel@tonic-gate return (err ? set_errno(err) : 0); 31377c478bd9Sstevel@tonic-gate } 31387c478bd9Sstevel@tonic-gate 31397c478bd9Sstevel@tonic-gate /* 31407c478bd9Sstevel@tonic-gate * Kills all user processes in the zone, waiting for them all to exit 31417c478bd9Sstevel@tonic-gate * before returning. 31427c478bd9Sstevel@tonic-gate */ 31437c478bd9Sstevel@tonic-gate static int 31447c478bd9Sstevel@tonic-gate zone_empty(zone_t *zone) 31457c478bd9Sstevel@tonic-gate { 31467c478bd9Sstevel@tonic-gate int waitstatus; 31477c478bd9Sstevel@tonic-gate 31487c478bd9Sstevel@tonic-gate /* 31497c478bd9Sstevel@tonic-gate * We need to drop zonehash_lock before killing all 31507c478bd9Sstevel@tonic-gate * processes, otherwise we'll deadlock with zone_find_* 31517c478bd9Sstevel@tonic-gate * which can be called from the exit path. 31527c478bd9Sstevel@tonic-gate */ 31537c478bd9Sstevel@tonic-gate ASSERT(MUTEX_NOT_HELD(&zonehash_lock)); 31547c478bd9Sstevel@tonic-gate while ((waitstatus = zone_status_timedwait_sig(zone, lbolt + hz, 31557c478bd9Sstevel@tonic-gate ZONE_IS_EMPTY)) == -1) { 31567c478bd9Sstevel@tonic-gate killall(zone->zone_id); 31577c478bd9Sstevel@tonic-gate } 31587c478bd9Sstevel@tonic-gate /* 31597c478bd9Sstevel@tonic-gate * return EINTR if we were signaled 31607c478bd9Sstevel@tonic-gate */ 31617c478bd9Sstevel@tonic-gate if (waitstatus == 0) 31627c478bd9Sstevel@tonic-gate return (EINTR); 31637c478bd9Sstevel@tonic-gate return (0); 31647c478bd9Sstevel@tonic-gate } 31657c478bd9Sstevel@tonic-gate 316645916cd2Sjpk /* 316745916cd2Sjpk * This function implements the policy for zone visibility. 316845916cd2Sjpk * 316945916cd2Sjpk * In standard Solaris, a non-global zone can only see itself. 317045916cd2Sjpk * 317145916cd2Sjpk * In Trusted Extensions, a labeled zone can lookup any zone whose label 317245916cd2Sjpk * it dominates. For this test, the label of the global zone is treated as 317345916cd2Sjpk * admin_high so it is special-cased instead of being checked for dominance. 317445916cd2Sjpk * 317545916cd2Sjpk * Returns true if zone attributes are viewable, false otherwise. 317645916cd2Sjpk */ 317745916cd2Sjpk static boolean_t 317845916cd2Sjpk zone_list_access(zone_t *zone) 317945916cd2Sjpk { 318045916cd2Sjpk 318145916cd2Sjpk if (curproc->p_zone == global_zone || 318245916cd2Sjpk curproc->p_zone == zone) { 318345916cd2Sjpk return (B_TRUE); 318448451833Scarlsonj } else if (is_system_labeled() && !(zone->zone_flags & ZF_IS_SCRATCH)) { 318545916cd2Sjpk bslabel_t *curproc_label; 318645916cd2Sjpk bslabel_t *zone_label; 318745916cd2Sjpk 318845916cd2Sjpk curproc_label = label2bslabel(curproc->p_zone->zone_slabel); 318945916cd2Sjpk zone_label = label2bslabel(zone->zone_slabel); 319045916cd2Sjpk 319145916cd2Sjpk if (zone->zone_id != GLOBAL_ZONEID && 319245916cd2Sjpk bldominates(curproc_label, zone_label)) { 319345916cd2Sjpk return (B_TRUE); 319445916cd2Sjpk } else { 319545916cd2Sjpk return (B_FALSE); 319645916cd2Sjpk } 319745916cd2Sjpk } else { 319845916cd2Sjpk return (B_FALSE); 319945916cd2Sjpk } 320045916cd2Sjpk } 320145916cd2Sjpk 32027c478bd9Sstevel@tonic-gate /* 32037c478bd9Sstevel@tonic-gate * Systemcall to start the zone's halt sequence. By the time this 32047c478bd9Sstevel@tonic-gate * function successfully returns, all user processes and kernel threads 32057c478bd9Sstevel@tonic-gate * executing in it will have exited, ZSD shutdown callbacks executed, 32067c478bd9Sstevel@tonic-gate * and the zone status set to ZONE_IS_DOWN. 32077c478bd9Sstevel@tonic-gate * 32087c478bd9Sstevel@tonic-gate * It is possible that the call will interrupt itself if the caller is the 32097c478bd9Sstevel@tonic-gate * parent of any process running in the zone, and doesn't have SIGCHLD blocked. 32107c478bd9Sstevel@tonic-gate */ 32117c478bd9Sstevel@tonic-gate static int 32127c478bd9Sstevel@tonic-gate zone_shutdown(zoneid_t zoneid) 32137c478bd9Sstevel@tonic-gate { 32147c478bd9Sstevel@tonic-gate int error; 32157c478bd9Sstevel@tonic-gate zone_t *zone; 32167c478bd9Sstevel@tonic-gate zone_status_t status; 32177c478bd9Sstevel@tonic-gate 32187c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 32197c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 32207c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 32217c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 32227c478bd9Sstevel@tonic-gate 32237c478bd9Sstevel@tonic-gate /* 32247c478bd9Sstevel@tonic-gate * Block mounts so that VFS_MOUNT() can get an accurate view of 32257c478bd9Sstevel@tonic-gate * the zone's status with regards to ZONE_IS_SHUTTING down. 32267c478bd9Sstevel@tonic-gate * 32277c478bd9Sstevel@tonic-gate * e.g. NFS can fail the mount if it determines that the zone 32287c478bd9Sstevel@tonic-gate * has already begun the shutdown sequence. 32297c478bd9Sstevel@tonic-gate */ 32307c478bd9Sstevel@tonic-gate if (block_mounts() == 0) 32317c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 32327c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 32337c478bd9Sstevel@tonic-gate /* 32347c478bd9Sstevel@tonic-gate * Look for zone under hash lock to prevent races with other 32357c478bd9Sstevel@tonic-gate * calls to zone_shutdown and zone_destroy. 32367c478bd9Sstevel@tonic-gate */ 32377c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 32387c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32397c478bd9Sstevel@tonic-gate resume_mounts(); 32407c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 32417c478bd9Sstevel@tonic-gate } 32427c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 32437c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 32447c478bd9Sstevel@tonic-gate /* 32457c478bd9Sstevel@tonic-gate * Fail if the zone isn't fully initialized yet. 32467c478bd9Sstevel@tonic-gate */ 32477c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY) { 32487c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 32497c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32507c478bd9Sstevel@tonic-gate resume_mounts(); 32517c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 32527c478bd9Sstevel@tonic-gate } 32537c478bd9Sstevel@tonic-gate /* 32547c478bd9Sstevel@tonic-gate * If conditions required for zone_shutdown() to return have been met, 32557c478bd9Sstevel@tonic-gate * return success. 32567c478bd9Sstevel@tonic-gate */ 32577c478bd9Sstevel@tonic-gate if (status >= ZONE_IS_DOWN) { 32587c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 32597c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32607c478bd9Sstevel@tonic-gate resume_mounts(); 32617c478bd9Sstevel@tonic-gate return (0); 32627c478bd9Sstevel@tonic-gate } 32637c478bd9Sstevel@tonic-gate /* 32647c478bd9Sstevel@tonic-gate * If zone_shutdown() hasn't been called before, go through the motions. 32657c478bd9Sstevel@tonic-gate * If it has, there's nothing to do but wait for the kernel threads to 32667c478bd9Sstevel@tonic-gate * drain. 32677c478bd9Sstevel@tonic-gate */ 32687c478bd9Sstevel@tonic-gate if (status < ZONE_IS_EMPTY) { 32697c478bd9Sstevel@tonic-gate uint_t ntasks; 32707c478bd9Sstevel@tonic-gate 32717c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 32727c478bd9Sstevel@tonic-gate if ((ntasks = zone->zone_ntasks) != 1) { 32737c478bd9Sstevel@tonic-gate /* 32747c478bd9Sstevel@tonic-gate * There's still stuff running. 32757c478bd9Sstevel@tonic-gate */ 32767c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_SHUTTING_DOWN); 32777c478bd9Sstevel@tonic-gate } 32787c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 32797c478bd9Sstevel@tonic-gate if (ntasks == 1) { 32807c478bd9Sstevel@tonic-gate /* 32817c478bd9Sstevel@tonic-gate * The only way to create another task is through 32827c478bd9Sstevel@tonic-gate * zone_enter(), which will block until we drop 32837c478bd9Sstevel@tonic-gate * zonehash_lock. The zone is empty. 32847c478bd9Sstevel@tonic-gate */ 32857c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == NULL) { 32867c478bd9Sstevel@tonic-gate /* 32877c478bd9Sstevel@tonic-gate * Skip ahead to ZONE_IS_DOWN 32887c478bd9Sstevel@tonic-gate */ 32897c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DOWN); 32907c478bd9Sstevel@tonic-gate } else { 32917c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_EMPTY); 32927c478bd9Sstevel@tonic-gate } 32937c478bd9Sstevel@tonic-gate } 32947c478bd9Sstevel@tonic-gate } 32957c478bd9Sstevel@tonic-gate zone_hold(zone); /* so we can use the zone_t later */ 32967c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 32977c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 32987c478bd9Sstevel@tonic-gate resume_mounts(); 32997c478bd9Sstevel@tonic-gate 33007c478bd9Sstevel@tonic-gate if (error = zone_empty(zone)) { 33017c478bd9Sstevel@tonic-gate zone_rele(zone); 33027c478bd9Sstevel@tonic-gate return (set_errno(error)); 33037c478bd9Sstevel@tonic-gate } 33047c478bd9Sstevel@tonic-gate /* 33057c478bd9Sstevel@tonic-gate * After the zone status goes to ZONE_IS_DOWN this zone will no 33067c478bd9Sstevel@tonic-gate * longer be notified of changes to the pools configuration, so 33077c478bd9Sstevel@tonic-gate * in order to not end up with a stale pool pointer, we point 33087c478bd9Sstevel@tonic-gate * ourselves at the default pool and remove all resource 33097c478bd9Sstevel@tonic-gate * visibility. This is especially important as the zone_t may 33107c478bd9Sstevel@tonic-gate * languish on the deathrow for a very long time waiting for 33117c478bd9Sstevel@tonic-gate * cred's to drain out. 33127c478bd9Sstevel@tonic-gate * 33137c478bd9Sstevel@tonic-gate * This rebinding of the zone can happen multiple times 33147c478bd9Sstevel@tonic-gate * (presumably due to interrupted or parallel systemcalls) 33157c478bd9Sstevel@tonic-gate * without any adverse effects. 33167c478bd9Sstevel@tonic-gate */ 33177c478bd9Sstevel@tonic-gate if (pool_lock_intr() != 0) { 33187c478bd9Sstevel@tonic-gate zone_rele(zone); 33197c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 33207c478bd9Sstevel@tonic-gate } 33217c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED) { 33227c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 33237c478bd9Sstevel@tonic-gate zone_pool_set(zone, pool_default); 33247c478bd9Sstevel@tonic-gate /* 33257c478bd9Sstevel@tonic-gate * The zone no longer needs to be able to see any cpus. 33267c478bd9Sstevel@tonic-gate */ 33277c478bd9Sstevel@tonic-gate zone_pset_set(zone, ZONE_PS_INVAL); 33287c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 33297c478bd9Sstevel@tonic-gate } 33307c478bd9Sstevel@tonic-gate pool_unlock(); 33317c478bd9Sstevel@tonic-gate 33327c478bd9Sstevel@tonic-gate /* 33337c478bd9Sstevel@tonic-gate * ZSD shutdown callbacks can be executed multiple times, hence 33347c478bd9Sstevel@tonic-gate * it is safe to not be holding any locks across this call. 33357c478bd9Sstevel@tonic-gate */ 33367c478bd9Sstevel@tonic-gate zone_zsd_callbacks(zone, ZSD_SHUTDOWN); 33377c478bd9Sstevel@tonic-gate 33387c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 33397c478bd9Sstevel@tonic-gate if (zone->zone_kthreads == NULL && zone_status_get(zone) < ZONE_IS_DOWN) 33407c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DOWN); 33417c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 33427c478bd9Sstevel@tonic-gate 33437c478bd9Sstevel@tonic-gate /* 33447c478bd9Sstevel@tonic-gate * Wait for kernel threads to drain. 33457c478bd9Sstevel@tonic-gate */ 33467c478bd9Sstevel@tonic-gate if (!zone_status_wait_sig(zone, ZONE_IS_DOWN)) { 33477c478bd9Sstevel@tonic-gate zone_rele(zone); 33487c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 33497c478bd9Sstevel@tonic-gate } 33507c478bd9Sstevel@tonic-gate zone_rele(zone); 33517c478bd9Sstevel@tonic-gate return (0); 33527c478bd9Sstevel@tonic-gate } 33537c478bd9Sstevel@tonic-gate 33547c478bd9Sstevel@tonic-gate /* 33557c478bd9Sstevel@tonic-gate * Systemcall entry point to finalize the zone halt process. The caller 33567c478bd9Sstevel@tonic-gate * must have already successfully callefd zone_shutdown(). 33577c478bd9Sstevel@tonic-gate * 33587c478bd9Sstevel@tonic-gate * Upon successful completion, the zone will have been fully destroyed: 33597c478bd9Sstevel@tonic-gate * zsched will have exited, destructor callbacks executed, and the zone 33607c478bd9Sstevel@tonic-gate * removed from the list of active zones. 33617c478bd9Sstevel@tonic-gate */ 33627c478bd9Sstevel@tonic-gate static int 33637c478bd9Sstevel@tonic-gate zone_destroy(zoneid_t zoneid) 33647c478bd9Sstevel@tonic-gate { 33657c478bd9Sstevel@tonic-gate uint64_t uniqid; 33667c478bd9Sstevel@tonic-gate zone_t *zone; 33677c478bd9Sstevel@tonic-gate zone_status_t status; 33687c478bd9Sstevel@tonic-gate 33697c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 33707c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 33717c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 33727c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 33737c478bd9Sstevel@tonic-gate 33747c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 33757c478bd9Sstevel@tonic-gate /* 33767c478bd9Sstevel@tonic-gate * Look for zone under hash lock to prevent races with other 33777c478bd9Sstevel@tonic-gate * calls to zone_destroy. 33787c478bd9Sstevel@tonic-gate */ 33797c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 33807c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 33817c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 33827c478bd9Sstevel@tonic-gate } 33837c478bd9Sstevel@tonic-gate 33847c478bd9Sstevel@tonic-gate if (zone_mount_count(zone->zone_rootpath) != 0) { 33857c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 33867c478bd9Sstevel@tonic-gate return (set_errno(EBUSY)); 33877c478bd9Sstevel@tonic-gate } 33887c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 33897c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 33907c478bd9Sstevel@tonic-gate if (status < ZONE_IS_DOWN) { 33917c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 33927c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 33937c478bd9Sstevel@tonic-gate return (set_errno(EBUSY)); 33947c478bd9Sstevel@tonic-gate } else if (status == ZONE_IS_DOWN) { 33957c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_DYING); /* Tell zsched to exit */ 33967c478bd9Sstevel@tonic-gate } 33977c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 33987c478bd9Sstevel@tonic-gate zone_hold(zone); 33997c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 34007c478bd9Sstevel@tonic-gate 34017c478bd9Sstevel@tonic-gate /* 34027c478bd9Sstevel@tonic-gate * wait for zsched to exit 34037c478bd9Sstevel@tonic-gate */ 34047c478bd9Sstevel@tonic-gate zone_status_wait(zone, ZONE_IS_DEAD); 34057c478bd9Sstevel@tonic-gate zone_zsd_callbacks(zone, ZSD_DESTROY); 34067c478bd9Sstevel@tonic-gate uniqid = zone->zone_uniqid; 34077c478bd9Sstevel@tonic-gate zone_rele(zone); 34087c478bd9Sstevel@tonic-gate zone = NULL; /* potentially free'd */ 34097c478bd9Sstevel@tonic-gate 34107c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 34117c478bd9Sstevel@tonic-gate for (; /* ever */; ) { 34127c478bd9Sstevel@tonic-gate boolean_t unref; 34137c478bd9Sstevel@tonic-gate 34147c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL || 34157c478bd9Sstevel@tonic-gate zone->zone_uniqid != uniqid) { 34167c478bd9Sstevel@tonic-gate /* 34177c478bd9Sstevel@tonic-gate * The zone has gone away. Necessary conditions 34187c478bd9Sstevel@tonic-gate * are met, so we return success. 34197c478bd9Sstevel@tonic-gate */ 34207c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 34217c478bd9Sstevel@tonic-gate return (0); 34227c478bd9Sstevel@tonic-gate } 34237c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_lock); 34247c478bd9Sstevel@tonic-gate unref = ZONE_IS_UNREF(zone); 34257c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_lock); 34267c478bd9Sstevel@tonic-gate if (unref) { 34277c478bd9Sstevel@tonic-gate /* 34287c478bd9Sstevel@tonic-gate * There is only one reference to the zone -- that 34297c478bd9Sstevel@tonic-gate * added when the zone was added to the hashtables -- 34307c478bd9Sstevel@tonic-gate * and things will remain this way until we drop 34317c478bd9Sstevel@tonic-gate * zonehash_lock... we can go ahead and cleanup the 34327c478bd9Sstevel@tonic-gate * zone. 34337c478bd9Sstevel@tonic-gate */ 34347c478bd9Sstevel@tonic-gate break; 34357c478bd9Sstevel@tonic-gate } 34367c478bd9Sstevel@tonic-gate 34377c478bd9Sstevel@tonic-gate if (cv_wait_sig(&zone_destroy_cv, &zonehash_lock) == 0) { 34387c478bd9Sstevel@tonic-gate /* Signaled */ 34397c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 34407c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 34417c478bd9Sstevel@tonic-gate } 34427c478bd9Sstevel@tonic-gate 34437c478bd9Sstevel@tonic-gate } 34447c478bd9Sstevel@tonic-gate 34457c478bd9Sstevel@tonic-gate /* 34467c478bd9Sstevel@tonic-gate * It is now safe to let the zone be recreated; remove it from the 34477c478bd9Sstevel@tonic-gate * lists. The memory will not be freed until the last cred 34487c478bd9Sstevel@tonic-gate * reference goes away. 34497c478bd9Sstevel@tonic-gate */ 34507c478bd9Sstevel@tonic-gate ASSERT(zonecount > 1); /* must be > 1; can't destroy global zone */ 34517c478bd9Sstevel@tonic-gate zonecount--; 34527c478bd9Sstevel@tonic-gate /* remove from active list and hash tables */ 34537c478bd9Sstevel@tonic-gate list_remove(&zone_active, zone); 34547c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyname, 34557c478bd9Sstevel@tonic-gate (mod_hash_key_t)zone->zone_name); 34567c478bd9Sstevel@tonic-gate (void) mod_hash_destroy(zonehashbyid, 34577c478bd9Sstevel@tonic-gate (mod_hash_key_t)(uintptr_t)zone->zone_id); 345848451833Scarlsonj if (zone->zone_flags & ZF_HASHED_LABEL) 345945916cd2Sjpk (void) mod_hash_destroy(zonehashbylabel, 346045916cd2Sjpk (mod_hash_key_t)zone->zone_slabel); 34617c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 34627c478bd9Sstevel@tonic-gate 3463108322fbScarlsonj /* 3464108322fbScarlsonj * Release the root vnode; we're not using it anymore. Nor should any 3465108322fbScarlsonj * other thread that might access it exist. 3466108322fbScarlsonj */ 3467108322fbScarlsonj if (zone->zone_rootvp != NULL) { 3468108322fbScarlsonj VN_RELE(zone->zone_rootvp); 3469108322fbScarlsonj zone->zone_rootvp = NULL; 3470108322fbScarlsonj } 3471108322fbScarlsonj 34727c478bd9Sstevel@tonic-gate /* add to deathrow list */ 34737c478bd9Sstevel@tonic-gate mutex_enter(&zone_deathrow_lock); 34747c478bd9Sstevel@tonic-gate list_insert_tail(&zone_deathrow, zone); 34757c478bd9Sstevel@tonic-gate mutex_exit(&zone_deathrow_lock); 34767c478bd9Sstevel@tonic-gate 34777c478bd9Sstevel@tonic-gate /* 34787c478bd9Sstevel@tonic-gate * Drop last reference (which was added by zsched()), this will 34797c478bd9Sstevel@tonic-gate * free the zone unless there are outstanding cred references. 34807c478bd9Sstevel@tonic-gate */ 34817c478bd9Sstevel@tonic-gate zone_rele(zone); 34827c478bd9Sstevel@tonic-gate return (0); 34837c478bd9Sstevel@tonic-gate } 34847c478bd9Sstevel@tonic-gate 34857c478bd9Sstevel@tonic-gate /* 34867c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_getattr(2). 34877c478bd9Sstevel@tonic-gate */ 34887c478bd9Sstevel@tonic-gate static ssize_t 34897c478bd9Sstevel@tonic-gate zone_getattr(zoneid_t zoneid, int attr, void *buf, size_t bufsize) 34907c478bd9Sstevel@tonic-gate { 34917c478bd9Sstevel@tonic-gate size_t size; 34927c478bd9Sstevel@tonic-gate int error = 0, err; 34937c478bd9Sstevel@tonic-gate zone_t *zone; 34947c478bd9Sstevel@tonic-gate char *zonepath; 3495*3f2f09c1Sdp char *outstr; 34967c478bd9Sstevel@tonic-gate zone_status_t zone_status; 34977c478bd9Sstevel@tonic-gate pid_t initpid; 34987c478bd9Sstevel@tonic-gate boolean_t global = (curproc->p_zone == global_zone); 349945916cd2Sjpk boolean_t curzone = (curproc->p_zone->zone_id == zoneid); 35007c478bd9Sstevel@tonic-gate 35017c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 35027c478bd9Sstevel@tonic-gate if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 35037c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35047c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 35057c478bd9Sstevel@tonic-gate } 35067c478bd9Sstevel@tonic-gate zone_status = zone_status_get(zone); 35077c478bd9Sstevel@tonic-gate if (zone_status < ZONE_IS_READY) { 35087c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35097c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 35107c478bd9Sstevel@tonic-gate } 35117c478bd9Sstevel@tonic-gate zone_hold(zone); 35127c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 35137c478bd9Sstevel@tonic-gate 35147c478bd9Sstevel@tonic-gate /* 351545916cd2Sjpk * If not in the global zone, don't show information about other zones, 351645916cd2Sjpk * unless the system is labeled and the local zone's label dominates 351745916cd2Sjpk * the other zone. 35187c478bd9Sstevel@tonic-gate */ 351945916cd2Sjpk if (!zone_list_access(zone)) { 35207c478bd9Sstevel@tonic-gate zone_rele(zone); 35217c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 35227c478bd9Sstevel@tonic-gate } 35237c478bd9Sstevel@tonic-gate 35247c478bd9Sstevel@tonic-gate switch (attr) { 35257c478bd9Sstevel@tonic-gate case ZONE_ATTR_ROOT: 35267c478bd9Sstevel@tonic-gate if (global) { 35277c478bd9Sstevel@tonic-gate /* 35287c478bd9Sstevel@tonic-gate * Copy the path to trim the trailing "/" (except for 35297c478bd9Sstevel@tonic-gate * the global zone). 35307c478bd9Sstevel@tonic-gate */ 35317c478bd9Sstevel@tonic-gate if (zone != global_zone) 35327c478bd9Sstevel@tonic-gate size = zone->zone_rootpathlen - 1; 35337c478bd9Sstevel@tonic-gate else 35347c478bd9Sstevel@tonic-gate size = zone->zone_rootpathlen; 35357c478bd9Sstevel@tonic-gate zonepath = kmem_alloc(size, KM_SLEEP); 35367c478bd9Sstevel@tonic-gate bcopy(zone->zone_rootpath, zonepath, size); 35377c478bd9Sstevel@tonic-gate zonepath[size - 1] = '\0'; 35387c478bd9Sstevel@tonic-gate } else { 353945916cd2Sjpk if (curzone || !is_system_labeled()) { 354045916cd2Sjpk /* 354145916cd2Sjpk * Caller is not in the global zone. 354245916cd2Sjpk * if the query is on the current zone 354345916cd2Sjpk * or the system is not labeled, 354445916cd2Sjpk * just return faked-up path for current zone. 354545916cd2Sjpk */ 354645916cd2Sjpk zonepath = "/"; 354745916cd2Sjpk size = 2; 354845916cd2Sjpk } else { 354945916cd2Sjpk /* 355045916cd2Sjpk * Return related path for current zone. 355145916cd2Sjpk */ 355245916cd2Sjpk int prefix_len = strlen(zone_prefix); 355345916cd2Sjpk int zname_len = strlen(zone->zone_name); 355445916cd2Sjpk 355545916cd2Sjpk size = prefix_len + zname_len + 1; 355645916cd2Sjpk zonepath = kmem_alloc(size, KM_SLEEP); 355745916cd2Sjpk bcopy(zone_prefix, zonepath, prefix_len); 355845916cd2Sjpk bcopy(zone->zone_name, zonepath + 3559*3f2f09c1Sdp prefix_len, zname_len); 356045916cd2Sjpk zonepath[size - 1] = '\0'; 356145916cd2Sjpk } 35627c478bd9Sstevel@tonic-gate } 35637c478bd9Sstevel@tonic-gate if (bufsize > size) 35647c478bd9Sstevel@tonic-gate bufsize = size; 35657c478bd9Sstevel@tonic-gate if (buf != NULL) { 35667c478bd9Sstevel@tonic-gate err = copyoutstr(zonepath, buf, bufsize, NULL); 35677c478bd9Sstevel@tonic-gate if (err != 0 && err != ENAMETOOLONG) 35687c478bd9Sstevel@tonic-gate error = EFAULT; 35697c478bd9Sstevel@tonic-gate } 357045916cd2Sjpk if (global || (is_system_labeled() && !curzone)) 35717c478bd9Sstevel@tonic-gate kmem_free(zonepath, size); 35727c478bd9Sstevel@tonic-gate break; 35737c478bd9Sstevel@tonic-gate 35747c478bd9Sstevel@tonic-gate case ZONE_ATTR_NAME: 35757c478bd9Sstevel@tonic-gate size = strlen(zone->zone_name) + 1; 35767c478bd9Sstevel@tonic-gate if (bufsize > size) 35777c478bd9Sstevel@tonic-gate bufsize = size; 35787c478bd9Sstevel@tonic-gate if (buf != NULL) { 35797c478bd9Sstevel@tonic-gate err = copyoutstr(zone->zone_name, buf, bufsize, NULL); 35807c478bd9Sstevel@tonic-gate if (err != 0 && err != ENAMETOOLONG) 35817c478bd9Sstevel@tonic-gate error = EFAULT; 35827c478bd9Sstevel@tonic-gate } 35837c478bd9Sstevel@tonic-gate break; 35847c478bd9Sstevel@tonic-gate 35857c478bd9Sstevel@tonic-gate case ZONE_ATTR_STATUS: 35867c478bd9Sstevel@tonic-gate /* 35877c478bd9Sstevel@tonic-gate * Since we're not holding zonehash_lock, the zone status 35887c478bd9Sstevel@tonic-gate * may be anything; leave it up to userland to sort it out. 35897c478bd9Sstevel@tonic-gate */ 35907c478bd9Sstevel@tonic-gate size = sizeof (zone_status); 35917c478bd9Sstevel@tonic-gate if (bufsize > size) 35927c478bd9Sstevel@tonic-gate bufsize = size; 35937c478bd9Sstevel@tonic-gate zone_status = zone_status_get(zone); 35947c478bd9Sstevel@tonic-gate if (buf != NULL && 35957c478bd9Sstevel@tonic-gate copyout(&zone_status, buf, bufsize) != 0) 35967c478bd9Sstevel@tonic-gate error = EFAULT; 35977c478bd9Sstevel@tonic-gate break; 35987c478bd9Sstevel@tonic-gate case ZONE_ATTR_PRIVSET: 35997c478bd9Sstevel@tonic-gate size = sizeof (priv_set_t); 36007c478bd9Sstevel@tonic-gate if (bufsize > size) 36017c478bd9Sstevel@tonic-gate bufsize = size; 36027c478bd9Sstevel@tonic-gate if (buf != NULL && 36037c478bd9Sstevel@tonic-gate copyout(zone->zone_privset, buf, bufsize) != 0) 36047c478bd9Sstevel@tonic-gate error = EFAULT; 36057c478bd9Sstevel@tonic-gate break; 36067c478bd9Sstevel@tonic-gate case ZONE_ATTR_UNIQID: 36077c478bd9Sstevel@tonic-gate size = sizeof (zone->zone_uniqid); 36087c478bd9Sstevel@tonic-gate if (bufsize > size) 36097c478bd9Sstevel@tonic-gate bufsize = size; 36107c478bd9Sstevel@tonic-gate if (buf != NULL && 36117c478bd9Sstevel@tonic-gate copyout(&zone->zone_uniqid, buf, bufsize) != 0) 36127c478bd9Sstevel@tonic-gate error = EFAULT; 36137c478bd9Sstevel@tonic-gate break; 36147c478bd9Sstevel@tonic-gate case ZONE_ATTR_POOLID: 36157c478bd9Sstevel@tonic-gate { 36167c478bd9Sstevel@tonic-gate pool_t *pool; 36177c478bd9Sstevel@tonic-gate poolid_t poolid; 36187c478bd9Sstevel@tonic-gate 36197c478bd9Sstevel@tonic-gate if (pool_lock_intr() != 0) { 36207c478bd9Sstevel@tonic-gate error = EINTR; 36217c478bd9Sstevel@tonic-gate break; 36227c478bd9Sstevel@tonic-gate } 36237c478bd9Sstevel@tonic-gate pool = zone_pool_get(zone); 36247c478bd9Sstevel@tonic-gate poolid = pool->pool_id; 36257c478bd9Sstevel@tonic-gate pool_unlock(); 36267c478bd9Sstevel@tonic-gate size = sizeof (poolid); 36277c478bd9Sstevel@tonic-gate if (bufsize > size) 36287c478bd9Sstevel@tonic-gate bufsize = size; 36297c478bd9Sstevel@tonic-gate if (buf != NULL && copyout(&poolid, buf, size) != 0) 36307c478bd9Sstevel@tonic-gate error = EFAULT; 36317c478bd9Sstevel@tonic-gate } 36327c478bd9Sstevel@tonic-gate break; 363345916cd2Sjpk case ZONE_ATTR_SLBL: 363445916cd2Sjpk size = sizeof (bslabel_t); 363545916cd2Sjpk if (bufsize > size) 363645916cd2Sjpk bufsize = size; 363745916cd2Sjpk if (zone->zone_slabel == NULL) 363845916cd2Sjpk error = EINVAL; 363945916cd2Sjpk else if (buf != NULL && 364045916cd2Sjpk copyout(label2bslabel(zone->zone_slabel), buf, 364145916cd2Sjpk bufsize) != 0) 364245916cd2Sjpk error = EFAULT; 364345916cd2Sjpk break; 36447c478bd9Sstevel@tonic-gate case ZONE_ATTR_INITPID: 36457c478bd9Sstevel@tonic-gate size = sizeof (initpid); 36467c478bd9Sstevel@tonic-gate if (bufsize > size) 36477c478bd9Sstevel@tonic-gate bufsize = size; 36487c478bd9Sstevel@tonic-gate initpid = zone->zone_proc_initpid; 36497c478bd9Sstevel@tonic-gate if (initpid == -1) { 36507c478bd9Sstevel@tonic-gate error = ESRCH; 36517c478bd9Sstevel@tonic-gate break; 36527c478bd9Sstevel@tonic-gate } 36537c478bd9Sstevel@tonic-gate if (buf != NULL && 36547c478bd9Sstevel@tonic-gate copyout(&initpid, buf, bufsize) != 0) 36557c478bd9Sstevel@tonic-gate error = EFAULT; 36567c478bd9Sstevel@tonic-gate break; 3657*3f2f09c1Sdp case ZONE_ATTR_INITNAME: 3658*3f2f09c1Sdp size = strlen(zone->zone_initname) + 1; 3659*3f2f09c1Sdp if (bufsize > size) 3660*3f2f09c1Sdp bufsize = size; 3661*3f2f09c1Sdp if (buf != NULL) { 3662*3f2f09c1Sdp err = copyoutstr(zone->zone_initname, buf, bufsize, 3663*3f2f09c1Sdp NULL); 3664*3f2f09c1Sdp if (err != 0 && err != ENAMETOOLONG) 3665*3f2f09c1Sdp error = EFAULT; 3666*3f2f09c1Sdp } 3667*3f2f09c1Sdp break; 3668*3f2f09c1Sdp case ZONE_ATTR_BOOTARGS: 3669*3f2f09c1Sdp if (zone->zone_bootargs == NULL) 3670*3f2f09c1Sdp outstr = ""; 3671*3f2f09c1Sdp else 3672*3f2f09c1Sdp outstr = zone->zone_bootargs; 3673*3f2f09c1Sdp size = strlen(outstr) + 1; 3674*3f2f09c1Sdp if (bufsize > size) 3675*3f2f09c1Sdp bufsize = size; 3676*3f2f09c1Sdp if (buf != NULL) { 3677*3f2f09c1Sdp err = copyoutstr(outstr, buf, bufsize, NULL); 3678*3f2f09c1Sdp if (err != 0 && err != ENAMETOOLONG) 3679*3f2f09c1Sdp error = EFAULT; 3680*3f2f09c1Sdp } 3681*3f2f09c1Sdp break; 36827c478bd9Sstevel@tonic-gate default: 36837c478bd9Sstevel@tonic-gate error = EINVAL; 36847c478bd9Sstevel@tonic-gate } 36857c478bd9Sstevel@tonic-gate zone_rele(zone); 36867c478bd9Sstevel@tonic-gate 36877c478bd9Sstevel@tonic-gate if (error) 36887c478bd9Sstevel@tonic-gate return (set_errno(error)); 36897c478bd9Sstevel@tonic-gate return ((ssize_t)size); 36907c478bd9Sstevel@tonic-gate } 36917c478bd9Sstevel@tonic-gate 3692*3f2f09c1Sdp /* 3693*3f2f09c1Sdp * Systemcall entry point for zone_setattr(2). 3694*3f2f09c1Sdp */ 3695*3f2f09c1Sdp /*ARGSUSED*/ 3696*3f2f09c1Sdp static int 3697*3f2f09c1Sdp zone_setattr(zoneid_t zoneid, int attr, void *buf, size_t bufsize) 3698*3f2f09c1Sdp { 3699*3f2f09c1Sdp zone_t *zone; 3700*3f2f09c1Sdp zone_status_t zone_status; 3701*3f2f09c1Sdp int err; 3702*3f2f09c1Sdp 3703*3f2f09c1Sdp if (secpolicy_zone_config(CRED()) != 0) 3704*3f2f09c1Sdp return (set_errno(EPERM)); 3705*3f2f09c1Sdp 3706*3f2f09c1Sdp /* 3707*3f2f09c1Sdp * At present, attributes can only be set on non-running, 3708*3f2f09c1Sdp * non-global zones. 3709*3f2f09c1Sdp */ 3710*3f2f09c1Sdp if (zoneid == GLOBAL_ZONEID) { 3711*3f2f09c1Sdp return (set_errno(EINVAL)); 3712*3f2f09c1Sdp } 3713*3f2f09c1Sdp 3714*3f2f09c1Sdp mutex_enter(&zonehash_lock); 3715*3f2f09c1Sdp if ((zone = zone_find_all_by_id(zoneid)) == NULL) { 3716*3f2f09c1Sdp mutex_exit(&zonehash_lock); 3717*3f2f09c1Sdp return (set_errno(EINVAL)); 3718*3f2f09c1Sdp } 3719*3f2f09c1Sdp zone_hold(zone); 3720*3f2f09c1Sdp mutex_exit(&zonehash_lock); 3721*3f2f09c1Sdp 3722*3f2f09c1Sdp zone_status = zone_status_get(zone); 3723*3f2f09c1Sdp if (zone_status > ZONE_IS_READY) 3724*3f2f09c1Sdp goto done; 3725*3f2f09c1Sdp 3726*3f2f09c1Sdp switch (attr) { 3727*3f2f09c1Sdp case ZONE_ATTR_INITNAME: 3728*3f2f09c1Sdp err = zone_set_initname(zone, (const char *)buf); 3729*3f2f09c1Sdp break; 3730*3f2f09c1Sdp case ZONE_ATTR_BOOTARGS: 3731*3f2f09c1Sdp err = zone_set_bootargs(zone, (const char *)buf); 3732*3f2f09c1Sdp break; 3733*3f2f09c1Sdp default: 3734*3f2f09c1Sdp err = EINVAL; 3735*3f2f09c1Sdp } 3736*3f2f09c1Sdp 3737*3f2f09c1Sdp done: 3738*3f2f09c1Sdp zone_rele(zone); 3739*3f2f09c1Sdp return (err != 0 ? set_errno(err) : 0); 3740*3f2f09c1Sdp } 3741*3f2f09c1Sdp 37427c478bd9Sstevel@tonic-gate /* 37437c478bd9Sstevel@tonic-gate * Return zero if the process has at least one vnode mapped in to its 37447c478bd9Sstevel@tonic-gate * address space which shouldn't be allowed to change zones. 37457c478bd9Sstevel@tonic-gate */ 37467c478bd9Sstevel@tonic-gate static int 37477c478bd9Sstevel@tonic-gate as_can_change_zones(void) 37487c478bd9Sstevel@tonic-gate { 37497c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 37507c478bd9Sstevel@tonic-gate struct seg *seg; 37517c478bd9Sstevel@tonic-gate struct as *as = pp->p_as; 37527c478bd9Sstevel@tonic-gate vnode_t *vp; 37537c478bd9Sstevel@tonic-gate int allow = 1; 37547c478bd9Sstevel@tonic-gate 37557c478bd9Sstevel@tonic-gate ASSERT(pp->p_as != &kas); 37567c478bd9Sstevel@tonic-gate AS_LOCK_ENTER(&as, &as->a_lock, RW_READER); 37577c478bd9Sstevel@tonic-gate for (seg = AS_SEGFIRST(as); seg != NULL; seg = AS_SEGNEXT(as, seg)) { 37587c478bd9Sstevel@tonic-gate /* 37597c478bd9Sstevel@tonic-gate * if we can't get a backing vnode for this segment then skip 37607c478bd9Sstevel@tonic-gate * it. 37617c478bd9Sstevel@tonic-gate */ 37627c478bd9Sstevel@tonic-gate vp = NULL; 37637c478bd9Sstevel@tonic-gate if (SEGOP_GETVP(seg, seg->s_base, &vp) != 0 || vp == NULL) 37647c478bd9Sstevel@tonic-gate continue; 37657c478bd9Sstevel@tonic-gate if (!vn_can_change_zones(vp)) { /* bail on first match */ 37667c478bd9Sstevel@tonic-gate allow = 0; 37677c478bd9Sstevel@tonic-gate break; 37687c478bd9Sstevel@tonic-gate } 37697c478bd9Sstevel@tonic-gate } 37707c478bd9Sstevel@tonic-gate AS_LOCK_EXIT(&as, &as->a_lock); 37717c478bd9Sstevel@tonic-gate return (allow); 37727c478bd9Sstevel@tonic-gate } 37737c478bd9Sstevel@tonic-gate 37747c478bd9Sstevel@tonic-gate /* 37757c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_enter(). 37767c478bd9Sstevel@tonic-gate * 37777c478bd9Sstevel@tonic-gate * The current process is injected into said zone. In the process 37787c478bd9Sstevel@tonic-gate * it will change its project membership, privileges, rootdir/cwd, 37797c478bd9Sstevel@tonic-gate * zone-wide rctls, and pool association to match those of the zone. 37807c478bd9Sstevel@tonic-gate * 37817c478bd9Sstevel@tonic-gate * The first zone_enter() called while the zone is in the ZONE_IS_READY 37827c478bd9Sstevel@tonic-gate * state will transition it to ZONE_IS_RUNNING. Processes may only 37837c478bd9Sstevel@tonic-gate * enter a zone that is "ready" or "running". 37847c478bd9Sstevel@tonic-gate */ 37857c478bd9Sstevel@tonic-gate static int 37867c478bd9Sstevel@tonic-gate zone_enter(zoneid_t zoneid) 37877c478bd9Sstevel@tonic-gate { 37887c478bd9Sstevel@tonic-gate zone_t *zone; 37897c478bd9Sstevel@tonic-gate vnode_t *vp; 37907c478bd9Sstevel@tonic-gate proc_t *pp = curproc; 37917c478bd9Sstevel@tonic-gate contract_t *ct; 37927c478bd9Sstevel@tonic-gate cont_process_t *ctp; 37937c478bd9Sstevel@tonic-gate task_t *tk, *oldtk; 37947c478bd9Sstevel@tonic-gate kproject_t *zone_proj0; 37957c478bd9Sstevel@tonic-gate cred_t *cr, *newcr; 37967c478bd9Sstevel@tonic-gate pool_t *oldpool, *newpool; 37977c478bd9Sstevel@tonic-gate sess_t *sp; 37987c478bd9Sstevel@tonic-gate uid_t uid; 37997c478bd9Sstevel@tonic-gate zone_status_t status; 38007c478bd9Sstevel@tonic-gate int err = 0; 38017c478bd9Sstevel@tonic-gate rctl_entity_p_t e; 38027c478bd9Sstevel@tonic-gate 38037c478bd9Sstevel@tonic-gate if (secpolicy_zone_config(CRED()) != 0) 38047c478bd9Sstevel@tonic-gate return (set_errno(EPERM)); 38057c478bd9Sstevel@tonic-gate if (zoneid < MIN_USERZONEID || zoneid > MAX_ZONEID) 38067c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 38077c478bd9Sstevel@tonic-gate 38087c478bd9Sstevel@tonic-gate /* 38097c478bd9Sstevel@tonic-gate * Stop all lwps so we don't need to hold a lock to look at 38107c478bd9Sstevel@tonic-gate * curproc->p_zone. This needs to happen before we grab any 38117c478bd9Sstevel@tonic-gate * locks to avoid deadlock (another lwp in the process could 38127c478bd9Sstevel@tonic-gate * be waiting for the held lock). 38137c478bd9Sstevel@tonic-gate */ 38147c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp && !holdlwps(SHOLDFORK)) 38157c478bd9Sstevel@tonic-gate return (set_errno(EINTR)); 38167c478bd9Sstevel@tonic-gate 38177c478bd9Sstevel@tonic-gate /* 38187c478bd9Sstevel@tonic-gate * Make sure we're not changing zones with files open or mapped in 38197c478bd9Sstevel@tonic-gate * to our address space which shouldn't be changing zones. 38207c478bd9Sstevel@tonic-gate */ 38217c478bd9Sstevel@tonic-gate if (!files_can_change_zones()) { 38227c478bd9Sstevel@tonic-gate err = EBADF; 38237c478bd9Sstevel@tonic-gate goto out; 38247c478bd9Sstevel@tonic-gate } 38257c478bd9Sstevel@tonic-gate if (!as_can_change_zones()) { 38267c478bd9Sstevel@tonic-gate err = EFAULT; 38277c478bd9Sstevel@tonic-gate goto out; 38287c478bd9Sstevel@tonic-gate } 38297c478bd9Sstevel@tonic-gate 38307c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 38317c478bd9Sstevel@tonic-gate if (pp->p_zone != global_zone) { 38327c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 38337c478bd9Sstevel@tonic-gate err = EINVAL; 38347c478bd9Sstevel@tonic-gate goto out; 38357c478bd9Sstevel@tonic-gate } 38367c478bd9Sstevel@tonic-gate 38377c478bd9Sstevel@tonic-gate zone = zone_find_all_by_id(zoneid); 38387c478bd9Sstevel@tonic-gate if (zone == NULL) { 38397c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 38407c478bd9Sstevel@tonic-gate err = EINVAL; 38417c478bd9Sstevel@tonic-gate goto out; 38427c478bd9Sstevel@tonic-gate } 38437c478bd9Sstevel@tonic-gate 38447c478bd9Sstevel@tonic-gate /* 38457c478bd9Sstevel@tonic-gate * To prevent processes in a zone from holding contracts on 38467c478bd9Sstevel@tonic-gate * extrazonal resources, and to avoid process contract 38477c478bd9Sstevel@tonic-gate * memberships which span zones, contract holders and processes 38487c478bd9Sstevel@tonic-gate * which aren't the sole members of their encapsulating process 38497c478bd9Sstevel@tonic-gate * contracts are not allowed to zone_enter. 38507c478bd9Sstevel@tonic-gate */ 38517c478bd9Sstevel@tonic-gate ctp = pp->p_ct_process; 38527c478bd9Sstevel@tonic-gate ct = &ctp->conp_contract; 38537c478bd9Sstevel@tonic-gate mutex_enter(&ct->ct_lock); 38547c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 38557c478bd9Sstevel@tonic-gate if ((avl_numnodes(&pp->p_ct_held) != 0) || (ctp->conp_nmembers != 1)) { 38567c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 38577c478bd9Sstevel@tonic-gate mutex_exit(&ct->ct_lock); 38587c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 38597c478bd9Sstevel@tonic-gate pool_unlock(); 38607c478bd9Sstevel@tonic-gate err = EINVAL; 38617c478bd9Sstevel@tonic-gate goto out; 38627c478bd9Sstevel@tonic-gate } 38637c478bd9Sstevel@tonic-gate 38647c478bd9Sstevel@tonic-gate /* 38657c478bd9Sstevel@tonic-gate * Moreover, we don't allow processes whose encapsulating 38667c478bd9Sstevel@tonic-gate * process contracts have inherited extrazonal contracts. 38677c478bd9Sstevel@tonic-gate * While it would be easier to eliminate all process contracts 38687c478bd9Sstevel@tonic-gate * with inherited contracts, we need to be able to give a 38697c478bd9Sstevel@tonic-gate * restarted init (or other zone-penetrating process) its 38707c478bd9Sstevel@tonic-gate * predecessor's contracts. 38717c478bd9Sstevel@tonic-gate */ 38727c478bd9Sstevel@tonic-gate if (ctp->conp_ninherited != 0) { 38737c478bd9Sstevel@tonic-gate contract_t *next; 38747c478bd9Sstevel@tonic-gate for (next = list_head(&ctp->conp_inherited); next; 38757c478bd9Sstevel@tonic-gate next = list_next(&ctp->conp_inherited, next)) { 38767c478bd9Sstevel@tonic-gate if (contract_getzuniqid(next) != zone->zone_uniqid) { 38777c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 38787c478bd9Sstevel@tonic-gate mutex_exit(&ct->ct_lock); 38797c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 38807c478bd9Sstevel@tonic-gate pool_unlock(); 38817c478bd9Sstevel@tonic-gate err = EINVAL; 38827c478bd9Sstevel@tonic-gate goto out; 38837c478bd9Sstevel@tonic-gate } 38847c478bd9Sstevel@tonic-gate } 38857c478bd9Sstevel@tonic-gate } 38867c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 38877c478bd9Sstevel@tonic-gate mutex_exit(&ct->ct_lock); 38887c478bd9Sstevel@tonic-gate 38897c478bd9Sstevel@tonic-gate status = zone_status_get(zone); 38907c478bd9Sstevel@tonic-gate if (status < ZONE_IS_READY || status >= ZONE_IS_SHUTTING_DOWN) { 38917c478bd9Sstevel@tonic-gate /* 38927c478bd9Sstevel@tonic-gate * Can't join 38937c478bd9Sstevel@tonic-gate */ 38947c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 38957c478bd9Sstevel@tonic-gate err = EINVAL; 38967c478bd9Sstevel@tonic-gate goto out; 38977c478bd9Sstevel@tonic-gate } 38987c478bd9Sstevel@tonic-gate 38997c478bd9Sstevel@tonic-gate /* 39007c478bd9Sstevel@tonic-gate * Make sure new priv set is within the permitted set for caller 39017c478bd9Sstevel@tonic-gate */ 39027c478bd9Sstevel@tonic-gate if (!priv_issubset(zone->zone_privset, &CR_OPPRIV(CRED()))) { 39037c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 39047c478bd9Sstevel@tonic-gate err = EPERM; 39057c478bd9Sstevel@tonic-gate goto out; 39067c478bd9Sstevel@tonic-gate } 39077c478bd9Sstevel@tonic-gate /* 39087c478bd9Sstevel@tonic-gate * We want to momentarily drop zonehash_lock while we optimistically 39097c478bd9Sstevel@tonic-gate * bind curproc to the pool it should be running in. This is safe 39107c478bd9Sstevel@tonic-gate * since the zone can't disappear (we have a hold on it). 39117c478bd9Sstevel@tonic-gate */ 39127c478bd9Sstevel@tonic-gate zone_hold(zone); 39137c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 39147c478bd9Sstevel@tonic-gate 39157c478bd9Sstevel@tonic-gate /* 39167c478bd9Sstevel@tonic-gate * Grab pool_lock to keep the pools configuration from changing 39177c478bd9Sstevel@tonic-gate * and to stop ourselves from getting rebound to another pool 39187c478bd9Sstevel@tonic-gate * until we join the zone. 39197c478bd9Sstevel@tonic-gate */ 39207c478bd9Sstevel@tonic-gate if (pool_lock_intr() != 0) { 39217c478bd9Sstevel@tonic-gate zone_rele(zone); 39227c478bd9Sstevel@tonic-gate err = EINTR; 39237c478bd9Sstevel@tonic-gate goto out; 39247c478bd9Sstevel@tonic-gate } 39257c478bd9Sstevel@tonic-gate ASSERT(secpolicy_pool(CRED()) == 0); 39267c478bd9Sstevel@tonic-gate /* 39277c478bd9Sstevel@tonic-gate * Bind ourselves to the pool currently associated with the zone. 39287c478bd9Sstevel@tonic-gate */ 39297c478bd9Sstevel@tonic-gate oldpool = curproc->p_pool; 39307c478bd9Sstevel@tonic-gate newpool = zone_pool_get(zone); 39317c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED && newpool != oldpool && 39327c478bd9Sstevel@tonic-gate (err = pool_do_bind(newpool, P_PID, P_MYID, 39337c478bd9Sstevel@tonic-gate POOL_BIND_ALL)) != 0) { 39347c478bd9Sstevel@tonic-gate pool_unlock(); 39357c478bd9Sstevel@tonic-gate zone_rele(zone); 39367c478bd9Sstevel@tonic-gate goto out; 39377c478bd9Sstevel@tonic-gate } 39387c478bd9Sstevel@tonic-gate 39397c478bd9Sstevel@tonic-gate /* 39407c478bd9Sstevel@tonic-gate * Grab cpu_lock now; we'll need it later when we call 39417c478bd9Sstevel@tonic-gate * task_join(). 39427c478bd9Sstevel@tonic-gate */ 39437c478bd9Sstevel@tonic-gate mutex_enter(&cpu_lock); 39447c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 39457c478bd9Sstevel@tonic-gate /* 39467c478bd9Sstevel@tonic-gate * Make sure the zone hasn't moved on since we dropped zonehash_lock. 39477c478bd9Sstevel@tonic-gate */ 39487c478bd9Sstevel@tonic-gate if (zone_status_get(zone) >= ZONE_IS_SHUTTING_DOWN) { 39497c478bd9Sstevel@tonic-gate /* 39507c478bd9Sstevel@tonic-gate * Can't join anymore. 39517c478bd9Sstevel@tonic-gate */ 39527c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 39537c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 39547c478bd9Sstevel@tonic-gate if (pool_state == POOL_ENABLED && 39557c478bd9Sstevel@tonic-gate newpool != oldpool) 39567c478bd9Sstevel@tonic-gate (void) pool_do_bind(oldpool, P_PID, P_MYID, 39577c478bd9Sstevel@tonic-gate POOL_BIND_ALL); 39587c478bd9Sstevel@tonic-gate pool_unlock(); 39597c478bd9Sstevel@tonic-gate zone_rele(zone); 39607c478bd9Sstevel@tonic-gate err = EINVAL; 39617c478bd9Sstevel@tonic-gate goto out; 39627c478bd9Sstevel@tonic-gate } 39637c478bd9Sstevel@tonic-gate 39647c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 39657c478bd9Sstevel@tonic-gate zone_proj0 = zone->zone_zsched->p_task->tk_proj; 39667c478bd9Sstevel@tonic-gate /* verify that we do not exceed and task or lwp limits */ 39677c478bd9Sstevel@tonic-gate mutex_enter(&zone->zone_nlwps_lock); 39687c478bd9Sstevel@tonic-gate /* add new lwps to zone and zone's proj0 */ 39697c478bd9Sstevel@tonic-gate zone_proj0->kpj_nlwps += pp->p_lwpcnt; 39707c478bd9Sstevel@tonic-gate zone->zone_nlwps += pp->p_lwpcnt; 39717c478bd9Sstevel@tonic-gate /* add 1 task to zone's proj0 */ 39727c478bd9Sstevel@tonic-gate zone_proj0->kpj_ntasks += 1; 39737c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 39747c478bd9Sstevel@tonic-gate mutex_exit(&zone->zone_nlwps_lock); 39757c478bd9Sstevel@tonic-gate 39767c478bd9Sstevel@tonic-gate /* remove lwps from proc's old zone and old project */ 39777c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_zone->zone_nlwps_lock); 39787c478bd9Sstevel@tonic-gate pp->p_zone->zone_nlwps -= pp->p_lwpcnt; 39797c478bd9Sstevel@tonic-gate pp->p_task->tk_proj->kpj_nlwps -= pp->p_lwpcnt; 39807c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_zone->zone_nlwps_lock); 39817c478bd9Sstevel@tonic-gate 39827c478bd9Sstevel@tonic-gate /* 39837c478bd9Sstevel@tonic-gate * Joining the zone cannot fail from now on. 39847c478bd9Sstevel@tonic-gate * 39857c478bd9Sstevel@tonic-gate * This means that a lot of the following code can be commonized and 39867c478bd9Sstevel@tonic-gate * shared with zsched(). 39877c478bd9Sstevel@tonic-gate */ 39887c478bd9Sstevel@tonic-gate 39897c478bd9Sstevel@tonic-gate /* 39907c478bd9Sstevel@tonic-gate * Reset the encapsulating process contract's zone. 39917c478bd9Sstevel@tonic-gate */ 39927c478bd9Sstevel@tonic-gate ASSERT(ct->ct_mzuniqid == GLOBAL_ZONEUNIQID); 39937c478bd9Sstevel@tonic-gate contract_setzuniqid(ct, zone->zone_uniqid); 39947c478bd9Sstevel@tonic-gate 39957c478bd9Sstevel@tonic-gate /* 39967c478bd9Sstevel@tonic-gate * Create a new task and associate the process with the project keyed 39977c478bd9Sstevel@tonic-gate * by (projid,zoneid). 39987c478bd9Sstevel@tonic-gate * 39997c478bd9Sstevel@tonic-gate * We might as well be in project 0; the global zone's projid doesn't 40007c478bd9Sstevel@tonic-gate * make much sense in a zone anyhow. 40017c478bd9Sstevel@tonic-gate * 40027c478bd9Sstevel@tonic-gate * This also increments zone_ntasks, and returns with p_lock held. 40037c478bd9Sstevel@tonic-gate */ 40047c478bd9Sstevel@tonic-gate tk = task_create(0, zone); 40057c478bd9Sstevel@tonic-gate oldtk = task_join(tk, 0); 40067c478bd9Sstevel@tonic-gate mutex_exit(&cpu_lock); 40077c478bd9Sstevel@tonic-gate 40087c478bd9Sstevel@tonic-gate pp->p_flag |= SZONETOP; 40097c478bd9Sstevel@tonic-gate pp->p_zone = zone; 40107c478bd9Sstevel@tonic-gate 40117c478bd9Sstevel@tonic-gate /* 40127c478bd9Sstevel@tonic-gate * call RCTLOP_SET functions on this proc 40137c478bd9Sstevel@tonic-gate */ 40147c478bd9Sstevel@tonic-gate e.rcep_p.zone = zone; 40157c478bd9Sstevel@tonic-gate e.rcep_t = RCENTITY_ZONE; 40167c478bd9Sstevel@tonic-gate (void) rctl_set_dup(NULL, NULL, pp, &e, zone->zone_rctls, NULL, 40177c478bd9Sstevel@tonic-gate RCD_CALLBACK); 40187c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 40197c478bd9Sstevel@tonic-gate 40207c478bd9Sstevel@tonic-gate /* 40217c478bd9Sstevel@tonic-gate * We don't need to hold any of zsched's locks here; not only do we know 40227c478bd9Sstevel@tonic-gate * the process and zone aren't going away, we know its session isn't 40237c478bd9Sstevel@tonic-gate * changing either. 40247c478bd9Sstevel@tonic-gate * 40257c478bd9Sstevel@tonic-gate * By joining zsched's session here, we mimic the behavior in the 40267c478bd9Sstevel@tonic-gate * global zone of init's sid being the pid of sched. We extend this 40277c478bd9Sstevel@tonic-gate * to all zlogin-like zone_enter()'ing processes as well. 40287c478bd9Sstevel@tonic-gate */ 40297c478bd9Sstevel@tonic-gate mutex_enter(&pidlock); 40307c478bd9Sstevel@tonic-gate sp = zone->zone_zsched->p_sessp; 40317c478bd9Sstevel@tonic-gate SESS_HOLD(sp); 40327c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 40337c478bd9Sstevel@tonic-gate pgexit(pp); 40347c478bd9Sstevel@tonic-gate SESS_RELE(pp->p_sessp); 40357c478bd9Sstevel@tonic-gate pp->p_sessp = sp; 40367c478bd9Sstevel@tonic-gate pgjoin(pp, zone->zone_zsched->p_pidp); 40377c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 40387c478bd9Sstevel@tonic-gate mutex_exit(&pidlock); 40397c478bd9Sstevel@tonic-gate 40407c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 40417c478bd9Sstevel@tonic-gate /* 40427c478bd9Sstevel@tonic-gate * We're firmly in the zone; let pools progress. 40437c478bd9Sstevel@tonic-gate */ 40447c478bd9Sstevel@tonic-gate pool_unlock(); 40457c478bd9Sstevel@tonic-gate task_rele(oldtk); 40467c478bd9Sstevel@tonic-gate /* 40477c478bd9Sstevel@tonic-gate * We don't need to retain a hold on the zone since we already 40487c478bd9Sstevel@tonic-gate * incremented zone_ntasks, so the zone isn't going anywhere. 40497c478bd9Sstevel@tonic-gate */ 40507c478bd9Sstevel@tonic-gate zone_rele(zone); 40517c478bd9Sstevel@tonic-gate 40527c478bd9Sstevel@tonic-gate /* 40537c478bd9Sstevel@tonic-gate * Chroot 40547c478bd9Sstevel@tonic-gate */ 40557c478bd9Sstevel@tonic-gate vp = zone->zone_rootvp; 40567c478bd9Sstevel@tonic-gate zone_chdir(vp, &PTOU(pp)->u_cdir, pp); 40577c478bd9Sstevel@tonic-gate zone_chdir(vp, &PTOU(pp)->u_rdir, pp); 40587c478bd9Sstevel@tonic-gate 40597c478bd9Sstevel@tonic-gate /* 40607c478bd9Sstevel@tonic-gate * Change process credentials 40617c478bd9Sstevel@tonic-gate */ 40627c478bd9Sstevel@tonic-gate newcr = cralloc(); 40637c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_crlock); 40647c478bd9Sstevel@tonic-gate cr = pp->p_cred; 40657c478bd9Sstevel@tonic-gate crcopy_to(cr, newcr); 40667c478bd9Sstevel@tonic-gate crsetzone(newcr, zone); 40677c478bd9Sstevel@tonic-gate pp->p_cred = newcr; 40687c478bd9Sstevel@tonic-gate 40697c478bd9Sstevel@tonic-gate /* 40707c478bd9Sstevel@tonic-gate * Restrict all process privilege sets to zone limit 40717c478bd9Sstevel@tonic-gate */ 40727c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_PPRIV(newcr)); 40737c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_EPRIV(newcr)); 40747c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_IPRIV(newcr)); 40757c478bd9Sstevel@tonic-gate priv_intersect(zone->zone_privset, &CR_LPRIV(newcr)); 40767c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_crlock); 40777c478bd9Sstevel@tonic-gate crset(pp, newcr); 40787c478bd9Sstevel@tonic-gate 40797c478bd9Sstevel@tonic-gate /* 40807c478bd9Sstevel@tonic-gate * Adjust upcount to reflect zone entry. 40817c478bd9Sstevel@tonic-gate */ 40827c478bd9Sstevel@tonic-gate uid = crgetruid(newcr); 40837c478bd9Sstevel@tonic-gate mutex_enter(&pidlock); 40847c478bd9Sstevel@tonic-gate upcount_dec(uid, GLOBAL_ZONEID); 40857c478bd9Sstevel@tonic-gate upcount_inc(uid, zoneid); 40867c478bd9Sstevel@tonic-gate mutex_exit(&pidlock); 40877c478bd9Sstevel@tonic-gate 40887c478bd9Sstevel@tonic-gate /* 40897c478bd9Sstevel@tonic-gate * Set up core file path and content. 40907c478bd9Sstevel@tonic-gate */ 40917c478bd9Sstevel@tonic-gate set_core_defaults(); 40927c478bd9Sstevel@tonic-gate 40937c478bd9Sstevel@tonic-gate out: 40947c478bd9Sstevel@tonic-gate /* 40957c478bd9Sstevel@tonic-gate * Let the other lwps continue. 40967c478bd9Sstevel@tonic-gate */ 40977c478bd9Sstevel@tonic-gate mutex_enter(&pp->p_lock); 40987c478bd9Sstevel@tonic-gate if (curthread != pp->p_agenttp) 40997c478bd9Sstevel@tonic-gate continuelwps(pp); 41007c478bd9Sstevel@tonic-gate mutex_exit(&pp->p_lock); 41017c478bd9Sstevel@tonic-gate 41027c478bd9Sstevel@tonic-gate return (err != 0 ? set_errno(err) : 0); 41037c478bd9Sstevel@tonic-gate } 41047c478bd9Sstevel@tonic-gate 41057c478bd9Sstevel@tonic-gate /* 41067c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_list(2). 41077c478bd9Sstevel@tonic-gate * 41087c478bd9Sstevel@tonic-gate * Processes running in a (non-global) zone only see themselves. 410945916cd2Sjpk * On labeled systems, they see all zones whose label they dominate. 41107c478bd9Sstevel@tonic-gate */ 41117c478bd9Sstevel@tonic-gate static int 41127c478bd9Sstevel@tonic-gate zone_list(zoneid_t *zoneidlist, uint_t *numzones) 41137c478bd9Sstevel@tonic-gate { 41147c478bd9Sstevel@tonic-gate zoneid_t *zoneids; 411548451833Scarlsonj zone_t *zone, *myzone; 41167c478bd9Sstevel@tonic-gate uint_t user_nzones, real_nzones; 411745916cd2Sjpk uint_t domi_nzones; 411845916cd2Sjpk int error; 41197c478bd9Sstevel@tonic-gate 41207c478bd9Sstevel@tonic-gate if (copyin(numzones, &user_nzones, sizeof (uint_t)) != 0) 41217c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 41227c478bd9Sstevel@tonic-gate 412348451833Scarlsonj myzone = curproc->p_zone; 412448451833Scarlsonj if (myzone != global_zone) { 412545916cd2Sjpk bslabel_t *mybslab; 412645916cd2Sjpk 412745916cd2Sjpk if (!is_system_labeled()) { 412845916cd2Sjpk /* just return current zone */ 412945916cd2Sjpk real_nzones = domi_nzones = 1; 413045916cd2Sjpk zoneids = kmem_alloc(sizeof (zoneid_t), KM_SLEEP); 413148451833Scarlsonj zoneids[0] = myzone->zone_id; 413245916cd2Sjpk } else { 413345916cd2Sjpk /* return all zones that are dominated */ 413445916cd2Sjpk mutex_enter(&zonehash_lock); 413545916cd2Sjpk real_nzones = zonecount; 413645916cd2Sjpk domi_nzones = 0; 413745916cd2Sjpk if (real_nzones > 0) { 413845916cd2Sjpk zoneids = kmem_alloc(real_nzones * 413945916cd2Sjpk sizeof (zoneid_t), KM_SLEEP); 414048451833Scarlsonj mybslab = label2bslabel(myzone->zone_slabel); 414145916cd2Sjpk for (zone = list_head(&zone_active); 414245916cd2Sjpk zone != NULL; 414345916cd2Sjpk zone = list_next(&zone_active, zone)) { 414445916cd2Sjpk if (zone->zone_id == GLOBAL_ZONEID) 414545916cd2Sjpk continue; 414648451833Scarlsonj if (zone != myzone && 414748451833Scarlsonj (zone->zone_flags & ZF_IS_SCRATCH)) 414848451833Scarlsonj continue; 414948451833Scarlsonj /* 415048451833Scarlsonj * Note that a label always dominates 415148451833Scarlsonj * itself, so myzone is always included 415248451833Scarlsonj * in the list. 415348451833Scarlsonj */ 415445916cd2Sjpk if (bldominates(mybslab, 415545916cd2Sjpk label2bslabel(zone->zone_slabel))) { 415645916cd2Sjpk zoneids[domi_nzones++] = 415745916cd2Sjpk zone->zone_id; 415845916cd2Sjpk } 415945916cd2Sjpk } 416045916cd2Sjpk } 416145916cd2Sjpk mutex_exit(&zonehash_lock); 416245916cd2Sjpk } 41637c478bd9Sstevel@tonic-gate } else { 41647c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 41657c478bd9Sstevel@tonic-gate real_nzones = zonecount; 416645916cd2Sjpk domi_nzones = 0; 416745916cd2Sjpk if (real_nzones > 0) { 41687c478bd9Sstevel@tonic-gate zoneids = kmem_alloc(real_nzones * sizeof (zoneid_t), 41697c478bd9Sstevel@tonic-gate KM_SLEEP); 41707c478bd9Sstevel@tonic-gate for (zone = list_head(&zone_active); zone != NULL; 41717c478bd9Sstevel@tonic-gate zone = list_next(&zone_active, zone)) 417245916cd2Sjpk zoneids[domi_nzones++] = zone->zone_id; 417345916cd2Sjpk ASSERT(domi_nzones == real_nzones); 41747c478bd9Sstevel@tonic-gate } 41757c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 41767c478bd9Sstevel@tonic-gate } 41777c478bd9Sstevel@tonic-gate 417845916cd2Sjpk /* 417945916cd2Sjpk * If user has allocated space for fewer entries than we found, then 418045916cd2Sjpk * return only up to his limit. Either way, tell him exactly how many 418145916cd2Sjpk * we found. 418245916cd2Sjpk */ 418345916cd2Sjpk if (domi_nzones < user_nzones) 418445916cd2Sjpk user_nzones = domi_nzones; 418545916cd2Sjpk error = 0; 418645916cd2Sjpk if (copyout(&domi_nzones, numzones, sizeof (uint_t)) != 0) { 41877c478bd9Sstevel@tonic-gate error = EFAULT; 418845916cd2Sjpk } else if (zoneidlist != NULL && user_nzones != 0) { 41897c478bd9Sstevel@tonic-gate if (copyout(zoneids, zoneidlist, 41907c478bd9Sstevel@tonic-gate user_nzones * sizeof (zoneid_t)) != 0) 41917c478bd9Sstevel@tonic-gate error = EFAULT; 41927c478bd9Sstevel@tonic-gate } 41937c478bd9Sstevel@tonic-gate 419445916cd2Sjpk if (real_nzones > 0) 41957c478bd9Sstevel@tonic-gate kmem_free(zoneids, real_nzones * sizeof (zoneid_t)); 41967c478bd9Sstevel@tonic-gate 419745916cd2Sjpk if (error != 0) 41987c478bd9Sstevel@tonic-gate return (set_errno(error)); 41997c478bd9Sstevel@tonic-gate else 42007c478bd9Sstevel@tonic-gate return (0); 42017c478bd9Sstevel@tonic-gate } 42027c478bd9Sstevel@tonic-gate 42037c478bd9Sstevel@tonic-gate /* 42047c478bd9Sstevel@tonic-gate * Systemcall entry point for zone_lookup(2). 42057c478bd9Sstevel@tonic-gate * 420645916cd2Sjpk * Non-global zones are only able to see themselves and (on labeled systems) 420745916cd2Sjpk * the zones they dominate. 42087c478bd9Sstevel@tonic-gate */ 42097c478bd9Sstevel@tonic-gate static zoneid_t 42107c478bd9Sstevel@tonic-gate zone_lookup(const char *zone_name) 42117c478bd9Sstevel@tonic-gate { 42127c478bd9Sstevel@tonic-gate char *kname; 42137c478bd9Sstevel@tonic-gate zone_t *zone; 42147c478bd9Sstevel@tonic-gate zoneid_t zoneid; 42157c478bd9Sstevel@tonic-gate int err; 42167c478bd9Sstevel@tonic-gate 42177c478bd9Sstevel@tonic-gate if (zone_name == NULL) { 42187c478bd9Sstevel@tonic-gate /* return caller's zone id */ 42197c478bd9Sstevel@tonic-gate return (getzoneid()); 42207c478bd9Sstevel@tonic-gate } 42217c478bd9Sstevel@tonic-gate 42227c478bd9Sstevel@tonic-gate kname = kmem_zalloc(ZONENAME_MAX, KM_SLEEP); 42237c478bd9Sstevel@tonic-gate if ((err = copyinstr(zone_name, kname, ZONENAME_MAX, NULL)) != 0) { 42247c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 42257c478bd9Sstevel@tonic-gate return (set_errno(err)); 42267c478bd9Sstevel@tonic-gate } 42277c478bd9Sstevel@tonic-gate 42287c478bd9Sstevel@tonic-gate mutex_enter(&zonehash_lock); 42297c478bd9Sstevel@tonic-gate zone = zone_find_all_by_name(kname); 42307c478bd9Sstevel@tonic-gate kmem_free(kname, ZONENAME_MAX); 423145916cd2Sjpk /* 423245916cd2Sjpk * In a non-global zone, can only lookup global and own name. 423345916cd2Sjpk * In Trusted Extensions zone label dominance rules apply. 423445916cd2Sjpk */ 423545916cd2Sjpk if (zone == NULL || 423645916cd2Sjpk zone_status_get(zone) < ZONE_IS_READY || 423745916cd2Sjpk !zone_list_access(zone)) { 42387c478bd9Sstevel@tonic-gate mutex_exit(&zonehash_lock); 42397c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 424045916cd2Sjpk } else { 424145916cd2Sjpk zoneid = zone->zone_id; 424245916cd2Sjpk mutex_exit(&zonehash_lock); 424345916cd2Sjpk return (zoneid); 42447c478bd9Sstevel@tonic-gate } 42457c478bd9Sstevel@tonic-gate } 42467c478bd9Sstevel@tonic-gate 4247821c4a97Sdp static int 4248821c4a97Sdp zone_version(int *version_arg) 4249821c4a97Sdp { 4250821c4a97Sdp int version = ZONE_SYSCALL_API_VERSION; 4251821c4a97Sdp 4252821c4a97Sdp if (copyout(&version, version_arg, sizeof (int)) != 0) 4253821c4a97Sdp return (set_errno(EFAULT)); 4254821c4a97Sdp return (0); 4255821c4a97Sdp } 4256821c4a97Sdp 42577c478bd9Sstevel@tonic-gate /* ARGSUSED */ 42587c478bd9Sstevel@tonic-gate long 4259fa9e4066Sahrens zone(int cmd, void *arg1, void *arg2, void *arg3, void *arg4) 42607c478bd9Sstevel@tonic-gate { 42617c478bd9Sstevel@tonic-gate zone_def zs; 42627c478bd9Sstevel@tonic-gate 42637c478bd9Sstevel@tonic-gate switch (cmd) { 42647c478bd9Sstevel@tonic-gate case ZONE_CREATE: 42657c478bd9Sstevel@tonic-gate if (get_udatamodel() == DATAMODEL_NATIVE) { 42667c478bd9Sstevel@tonic-gate if (copyin(arg1, &zs, sizeof (zone_def))) { 42677c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 42687c478bd9Sstevel@tonic-gate } 42697c478bd9Sstevel@tonic-gate } else { 42707c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32_IMPL 42717c478bd9Sstevel@tonic-gate zone_def32 zs32; 42727c478bd9Sstevel@tonic-gate 42737c478bd9Sstevel@tonic-gate if (copyin(arg1, &zs32, sizeof (zone_def32))) { 42747c478bd9Sstevel@tonic-gate return (set_errno(EFAULT)); 42757c478bd9Sstevel@tonic-gate } 42767c478bd9Sstevel@tonic-gate zs.zone_name = 42777c478bd9Sstevel@tonic-gate (const char *)(unsigned long)zs32.zone_name; 42787c478bd9Sstevel@tonic-gate zs.zone_root = 42797c478bd9Sstevel@tonic-gate (const char *)(unsigned long)zs32.zone_root; 42807c478bd9Sstevel@tonic-gate zs.zone_privs = 42817c478bd9Sstevel@tonic-gate (const struct priv_set *) 42827c478bd9Sstevel@tonic-gate (unsigned long)zs32.zone_privs; 42836f70df68Sdp zs.zone_privssz = zs32.zone_privssz; 42847c478bd9Sstevel@tonic-gate zs.rctlbuf = (caddr_t)(unsigned long)zs32.rctlbuf; 42857c478bd9Sstevel@tonic-gate zs.rctlbufsz = zs32.rctlbufsz; 4286fa9e4066Sahrens zs.zfsbuf = (caddr_t)(unsigned long)zs32.zfsbuf; 4287fa9e4066Sahrens zs.zfsbufsz = zs32.zfsbufsz; 42887c478bd9Sstevel@tonic-gate zs.extended_error = 42897c478bd9Sstevel@tonic-gate (int *)(unsigned long)zs32.extended_error; 429045916cd2Sjpk zs.match = zs32.match; 429145916cd2Sjpk zs.doi = zs32.doi; 429245916cd2Sjpk zs.label = (const bslabel_t *)(uintptr_t)zs32.label; 42937c478bd9Sstevel@tonic-gate #else 42947c478bd9Sstevel@tonic-gate panic("get_udatamodel() returned bogus result\n"); 42957c478bd9Sstevel@tonic-gate #endif 42967c478bd9Sstevel@tonic-gate } 42977c478bd9Sstevel@tonic-gate 42987c478bd9Sstevel@tonic-gate return (zone_create(zs.zone_name, zs.zone_root, 4299821c4a97Sdp zs.zone_privs, zs.zone_privssz, 4300821c4a97Sdp (caddr_t)zs.rctlbuf, zs.rctlbufsz, 4301821c4a97Sdp (caddr_t)zs.zfsbuf, zs.zfsbufsz, 430245916cd2Sjpk zs.extended_error, zs.match, zs.doi, 430345916cd2Sjpk zs.label)); 43047c478bd9Sstevel@tonic-gate case ZONE_BOOT: 4305*3f2f09c1Sdp return (zone_boot((zoneid_t)(uintptr_t)arg1)); 43067c478bd9Sstevel@tonic-gate case ZONE_DESTROY: 43077c478bd9Sstevel@tonic-gate return (zone_destroy((zoneid_t)(uintptr_t)arg1)); 43087c478bd9Sstevel@tonic-gate case ZONE_GETATTR: 43097c478bd9Sstevel@tonic-gate return (zone_getattr((zoneid_t)(uintptr_t)arg1, 43107c478bd9Sstevel@tonic-gate (int)(uintptr_t)arg2, arg3, (size_t)arg4)); 4311*3f2f09c1Sdp case ZONE_SETATTR: 4312*3f2f09c1Sdp return (zone_setattr((zoneid_t)(uintptr_t)arg1, 4313*3f2f09c1Sdp (int)(uintptr_t)arg2, arg3, (size_t)arg4)); 43147c478bd9Sstevel@tonic-gate case ZONE_ENTER: 43157c478bd9Sstevel@tonic-gate return (zone_enter((zoneid_t)(uintptr_t)arg1)); 43167c478bd9Sstevel@tonic-gate case ZONE_LIST: 43177c478bd9Sstevel@tonic-gate return (zone_list((zoneid_t *)arg1, (uint_t *)arg2)); 43187c478bd9Sstevel@tonic-gate case ZONE_SHUTDOWN: 43197c478bd9Sstevel@tonic-gate return (zone_shutdown((zoneid_t)(uintptr_t)arg1)); 43207c478bd9Sstevel@tonic-gate case ZONE_LOOKUP: 43217c478bd9Sstevel@tonic-gate return (zone_lookup((const char *)arg1)); 4322821c4a97Sdp case ZONE_VERSION: 4323821c4a97Sdp return (zone_version((int *)arg1)); 43247c478bd9Sstevel@tonic-gate default: 43257c478bd9Sstevel@tonic-gate return (set_errno(EINVAL)); 43267c478bd9Sstevel@tonic-gate } 43277c478bd9Sstevel@tonic-gate } 43287c478bd9Sstevel@tonic-gate 43297c478bd9Sstevel@tonic-gate struct zarg { 43307c478bd9Sstevel@tonic-gate zone_t *zone; 43317c478bd9Sstevel@tonic-gate zone_cmd_arg_t arg; 43327c478bd9Sstevel@tonic-gate }; 43337c478bd9Sstevel@tonic-gate 43347c478bd9Sstevel@tonic-gate static int 43357c478bd9Sstevel@tonic-gate zone_lookup_door(const char *zone_name, door_handle_t *doorp) 43367c478bd9Sstevel@tonic-gate { 43377c478bd9Sstevel@tonic-gate char *buf; 43387c478bd9Sstevel@tonic-gate size_t buflen; 43397c478bd9Sstevel@tonic-gate int error; 43407c478bd9Sstevel@tonic-gate 43417c478bd9Sstevel@tonic-gate buflen = sizeof (ZONE_DOOR_PATH) + strlen(zone_name); 43427c478bd9Sstevel@tonic-gate buf = kmem_alloc(buflen, KM_SLEEP); 43437c478bd9Sstevel@tonic-gate (void) snprintf(buf, buflen, ZONE_DOOR_PATH, zone_name); 43447c478bd9Sstevel@tonic-gate error = door_ki_open(buf, doorp); 43457c478bd9Sstevel@tonic-gate kmem_free(buf, buflen); 43467c478bd9Sstevel@tonic-gate return (error); 43477c478bd9Sstevel@tonic-gate } 43487c478bd9Sstevel@tonic-gate 43497c478bd9Sstevel@tonic-gate static void 43507c478bd9Sstevel@tonic-gate zone_release_door(door_handle_t *doorp) 43517c478bd9Sstevel@tonic-gate { 43527c478bd9Sstevel@tonic-gate door_ki_rele(*doorp); 43537c478bd9Sstevel@tonic-gate *doorp = NULL; 43547c478bd9Sstevel@tonic-gate } 43557c478bd9Sstevel@tonic-gate 43567c478bd9Sstevel@tonic-gate static void 43577c478bd9Sstevel@tonic-gate zone_ki_call_zoneadmd(struct zarg *zargp) 43587c478bd9Sstevel@tonic-gate { 43597c478bd9Sstevel@tonic-gate door_handle_t door = NULL; 43607c478bd9Sstevel@tonic-gate door_arg_t darg, save_arg; 43617c478bd9Sstevel@tonic-gate char *zone_name; 43627c478bd9Sstevel@tonic-gate size_t zone_namelen; 43637c478bd9Sstevel@tonic-gate zoneid_t zoneid; 43647c478bd9Sstevel@tonic-gate zone_t *zone; 43657c478bd9Sstevel@tonic-gate zone_cmd_arg_t arg; 43667c478bd9Sstevel@tonic-gate uint64_t uniqid; 43677c478bd9Sstevel@tonic-gate size_t size; 43687c478bd9Sstevel@tonic-gate int error; 43697c478bd9Sstevel@tonic-gate int retry; 43707c478bd9Sstevel@tonic-gate 43717c478bd9Sstevel@tonic-gate zone = zargp->zone; 43727c478bd9Sstevel@tonic-gate arg = zargp->arg; 43737c478bd9Sstevel@tonic-gate kmem_free(zargp, sizeof (*zargp)); 43747c478bd9Sstevel@tonic-gate 43757c478bd9Sstevel@tonic-gate zone_namelen = strlen(zone->zone_name) + 1; 43767c478bd9Sstevel@tonic-gate zone_name = kmem_alloc(zone_namelen, KM_SLEEP); 43777c478bd9Sstevel@tonic-gate bcopy(zone->zone_name, zone_name, zone_namelen); 43787c478bd9Sstevel@tonic-gate zoneid = zone->zone_id; 43797c478bd9Sstevel@tonic-gate uniqid = zone->zone_uniqid; 43807c478bd9Sstevel@tonic-gate /* 43817c478bd9Sstevel@tonic-gate * zoneadmd may be down, but at least we can empty out the zone. 43827c478bd9Sstevel@tonic-gate * We can ignore the return value of zone_empty() since we're called 43837c478bd9Sstevel@tonic-gate * from a kernel thread and know we won't be delivered any signals. 43847c478bd9Sstevel@tonic-gate */ 43857c478bd9Sstevel@tonic-gate ASSERT(curproc == &p0); 43867c478bd9Sstevel@tonic-gate (void) zone_empty(zone); 43877c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) >= ZONE_IS_EMPTY); 43887c478bd9Sstevel@tonic-gate zone_rele(zone); 43897c478bd9Sstevel@tonic-gate 43907c478bd9Sstevel@tonic-gate size = sizeof (arg); 43917c478bd9Sstevel@tonic-gate darg.rbuf = (char *)&arg; 43927c478bd9Sstevel@tonic-gate darg.data_ptr = (char *)&arg; 43937c478bd9Sstevel@tonic-gate darg.rsize = size; 43947c478bd9Sstevel@tonic-gate darg.data_size = size; 43957c478bd9Sstevel@tonic-gate darg.desc_ptr = NULL; 43967c478bd9Sstevel@tonic-gate darg.desc_num = 0; 43977c478bd9Sstevel@tonic-gate 43987c478bd9Sstevel@tonic-gate save_arg = darg; 43997c478bd9Sstevel@tonic-gate /* 44007c478bd9Sstevel@tonic-gate * Since we're not holding a reference to the zone, any number of 44017c478bd9Sstevel@tonic-gate * things can go wrong, including the zone disappearing before we get a 44027c478bd9Sstevel@tonic-gate * chance to talk to zoneadmd. 44037c478bd9Sstevel@tonic-gate */ 44047c478bd9Sstevel@tonic-gate for (retry = 0; /* forever */; retry++) { 44057c478bd9Sstevel@tonic-gate if (door == NULL && 44067c478bd9Sstevel@tonic-gate (error = zone_lookup_door(zone_name, &door)) != 0) { 44077c478bd9Sstevel@tonic-gate goto next; 44087c478bd9Sstevel@tonic-gate } 44097c478bd9Sstevel@tonic-gate ASSERT(door != NULL); 44107c478bd9Sstevel@tonic-gate 44117c478bd9Sstevel@tonic-gate if ((error = door_ki_upcall(door, &darg)) == 0) { 44127c478bd9Sstevel@tonic-gate break; 44137c478bd9Sstevel@tonic-gate } 44147c478bd9Sstevel@tonic-gate switch (error) { 44157c478bd9Sstevel@tonic-gate case EINTR: 44167c478bd9Sstevel@tonic-gate /* FALLTHROUGH */ 44177c478bd9Sstevel@tonic-gate case EAGAIN: /* process may be forking */ 44187c478bd9Sstevel@tonic-gate /* 44197c478bd9Sstevel@tonic-gate * Back off for a bit 44207c478bd9Sstevel@tonic-gate */ 44217c478bd9Sstevel@tonic-gate break; 44227c478bd9Sstevel@tonic-gate case EBADF: 44237c478bd9Sstevel@tonic-gate zone_release_door(&door); 44247c478bd9Sstevel@tonic-gate if (zone_lookup_door(zone_name, &door) != 0) { 44257c478bd9Sstevel@tonic-gate /* 44267c478bd9Sstevel@tonic-gate * zoneadmd may be dead, but it may come back to 44277c478bd9Sstevel@tonic-gate * life later. 44287c478bd9Sstevel@tonic-gate */ 44297c478bd9Sstevel@tonic-gate break; 44307c478bd9Sstevel@tonic-gate } 44317c478bd9Sstevel@tonic-gate break; 44327c478bd9Sstevel@tonic-gate default: 44337c478bd9Sstevel@tonic-gate cmn_err(CE_WARN, 44347c478bd9Sstevel@tonic-gate "zone_ki_call_zoneadmd: door_ki_upcall error %d\n", 44357c478bd9Sstevel@tonic-gate error); 44367c478bd9Sstevel@tonic-gate goto out; 44377c478bd9Sstevel@tonic-gate } 44387c478bd9Sstevel@tonic-gate next: 44397c478bd9Sstevel@tonic-gate /* 44407c478bd9Sstevel@tonic-gate * If this isn't the same zone_t that we originally had in mind, 44417c478bd9Sstevel@tonic-gate * then this is the same as if two kadmin requests come in at 44427c478bd9Sstevel@tonic-gate * the same time: the first one wins. This means we lose, so we 44437c478bd9Sstevel@tonic-gate * bail. 44447c478bd9Sstevel@tonic-gate */ 44457c478bd9Sstevel@tonic-gate if ((zone = zone_find_by_id(zoneid)) == NULL) { 44467c478bd9Sstevel@tonic-gate /* 44477c478bd9Sstevel@tonic-gate * Problem is solved. 44487c478bd9Sstevel@tonic-gate */ 44497c478bd9Sstevel@tonic-gate break; 44507c478bd9Sstevel@tonic-gate } 44517c478bd9Sstevel@tonic-gate if (zone->zone_uniqid != uniqid) { 44527c478bd9Sstevel@tonic-gate /* 44537c478bd9Sstevel@tonic-gate * zoneid recycled 44547c478bd9Sstevel@tonic-gate */ 44557c478bd9Sstevel@tonic-gate zone_rele(zone); 44567c478bd9Sstevel@tonic-gate break; 44577c478bd9Sstevel@tonic-gate } 44587c478bd9Sstevel@tonic-gate /* 44597c478bd9Sstevel@tonic-gate * We could zone_status_timedwait(), but there doesn't seem to 44607c478bd9Sstevel@tonic-gate * be much point in doing that (plus, it would mean that 44617c478bd9Sstevel@tonic-gate * zone_free() isn't called until this thread exits). 44627c478bd9Sstevel@tonic-gate */ 44637c478bd9Sstevel@tonic-gate zone_rele(zone); 44647c478bd9Sstevel@tonic-gate delay(hz); 44657c478bd9Sstevel@tonic-gate darg = save_arg; 44667c478bd9Sstevel@tonic-gate } 44677c478bd9Sstevel@tonic-gate out: 44687c478bd9Sstevel@tonic-gate if (door != NULL) { 44697c478bd9Sstevel@tonic-gate zone_release_door(&door); 44707c478bd9Sstevel@tonic-gate } 44717c478bd9Sstevel@tonic-gate kmem_free(zone_name, zone_namelen); 44727c478bd9Sstevel@tonic-gate thread_exit(); 44737c478bd9Sstevel@tonic-gate } 44747c478bd9Sstevel@tonic-gate 44757c478bd9Sstevel@tonic-gate /* 4476*3f2f09c1Sdp * Entry point for uadmin() to tell the zone to go away or reboot. Analog to 4477*3f2f09c1Sdp * kadmin(). The caller is a process in the zone. 44787c478bd9Sstevel@tonic-gate * 44797c478bd9Sstevel@tonic-gate * In order to shutdown the zone, we will hand off control to zoneadmd 44807c478bd9Sstevel@tonic-gate * (running in the global zone) via a door. We do a half-hearted job at 44817c478bd9Sstevel@tonic-gate * killing all processes in the zone, create a kernel thread to contact 44827c478bd9Sstevel@tonic-gate * zoneadmd, and make note of the "uniqid" of the zone. The uniqid is 44837c478bd9Sstevel@tonic-gate * a form of generation number used to let zoneadmd (as well as 44847c478bd9Sstevel@tonic-gate * zone_destroy()) know exactly which zone they're re talking about. 44857c478bd9Sstevel@tonic-gate */ 44867c478bd9Sstevel@tonic-gate int 4487*3f2f09c1Sdp zone_kadmin(int cmd, int fcn, const char *mdep, cred_t *credp) 44887c478bd9Sstevel@tonic-gate { 44897c478bd9Sstevel@tonic-gate struct zarg *zargp; 44907c478bd9Sstevel@tonic-gate zone_cmd_t zcmd; 44917c478bd9Sstevel@tonic-gate zone_t *zone; 44927c478bd9Sstevel@tonic-gate 44937c478bd9Sstevel@tonic-gate zone = curproc->p_zone; 44947c478bd9Sstevel@tonic-gate ASSERT(getzoneid() != GLOBAL_ZONEID); 44957c478bd9Sstevel@tonic-gate 44967c478bd9Sstevel@tonic-gate switch (cmd) { 44977c478bd9Sstevel@tonic-gate case A_SHUTDOWN: 44987c478bd9Sstevel@tonic-gate switch (fcn) { 44997c478bd9Sstevel@tonic-gate case AD_HALT: 45007c478bd9Sstevel@tonic-gate case AD_POWEROFF: 45017c478bd9Sstevel@tonic-gate zcmd = Z_HALT; 45027c478bd9Sstevel@tonic-gate break; 45037c478bd9Sstevel@tonic-gate case AD_BOOT: 45047c478bd9Sstevel@tonic-gate zcmd = Z_REBOOT; 45057c478bd9Sstevel@tonic-gate break; 45067c478bd9Sstevel@tonic-gate case AD_IBOOT: 45077c478bd9Sstevel@tonic-gate case AD_SBOOT: 45087c478bd9Sstevel@tonic-gate case AD_SIBOOT: 45097c478bd9Sstevel@tonic-gate case AD_NOSYNC: 45107c478bd9Sstevel@tonic-gate return (ENOTSUP); 45117c478bd9Sstevel@tonic-gate default: 45127c478bd9Sstevel@tonic-gate return (EINVAL); 45137c478bd9Sstevel@tonic-gate } 45147c478bd9Sstevel@tonic-gate break; 45157c478bd9Sstevel@tonic-gate case A_REBOOT: 45167c478bd9Sstevel@tonic-gate zcmd = Z_REBOOT; 45177c478bd9Sstevel@tonic-gate break; 45187c478bd9Sstevel@tonic-gate case A_FTRACE: 45197c478bd9Sstevel@tonic-gate case A_REMOUNT: 45207c478bd9Sstevel@tonic-gate case A_FREEZE: 45217c478bd9Sstevel@tonic-gate case A_DUMP: 45227c478bd9Sstevel@tonic-gate return (ENOTSUP); 45237c478bd9Sstevel@tonic-gate default: 45247c478bd9Sstevel@tonic-gate ASSERT(cmd != A_SWAPCTL); /* handled by uadmin() */ 45257c478bd9Sstevel@tonic-gate return (EINVAL); 45267c478bd9Sstevel@tonic-gate } 45277c478bd9Sstevel@tonic-gate 45287c478bd9Sstevel@tonic-gate if (secpolicy_zone_admin(credp, B_FALSE)) 45297c478bd9Sstevel@tonic-gate return (EPERM); 45307c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 4531*3f2f09c1Sdp 45327c478bd9Sstevel@tonic-gate /* 45337c478bd9Sstevel@tonic-gate * zone_status can't be ZONE_IS_EMPTY or higher since curproc 45347c478bd9Sstevel@tonic-gate * is in the zone. 45357c478bd9Sstevel@tonic-gate */ 45367c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(zone) < ZONE_IS_EMPTY); 45377c478bd9Sstevel@tonic-gate if (zone_status_get(zone) > ZONE_IS_RUNNING) { 45387c478bd9Sstevel@tonic-gate /* 45397c478bd9Sstevel@tonic-gate * This zone is already on its way down. 45407c478bd9Sstevel@tonic-gate */ 45417c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 45427c478bd9Sstevel@tonic-gate return (0); 45437c478bd9Sstevel@tonic-gate } 45447c478bd9Sstevel@tonic-gate /* 45457c478bd9Sstevel@tonic-gate * Prevent future zone_enter()s 45467c478bd9Sstevel@tonic-gate */ 45477c478bd9Sstevel@tonic-gate zone_status_set(zone, ZONE_IS_SHUTTING_DOWN); 45487c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 45497c478bd9Sstevel@tonic-gate 45507c478bd9Sstevel@tonic-gate /* 45517c478bd9Sstevel@tonic-gate * Kill everyone now and call zoneadmd later. 45527c478bd9Sstevel@tonic-gate * zone_ki_call_zoneadmd() will do a more thorough job of this 45537c478bd9Sstevel@tonic-gate * later. 45547c478bd9Sstevel@tonic-gate */ 45557c478bd9Sstevel@tonic-gate killall(zone->zone_id); 45567c478bd9Sstevel@tonic-gate /* 45577c478bd9Sstevel@tonic-gate * Now, create the thread to contact zoneadmd and do the rest of the 45587c478bd9Sstevel@tonic-gate * work. This thread can't be created in our zone otherwise 45597c478bd9Sstevel@tonic-gate * zone_destroy() would deadlock. 45607c478bd9Sstevel@tonic-gate */ 4561*3f2f09c1Sdp zargp = kmem_zalloc(sizeof (*zargp), KM_SLEEP); 45627c478bd9Sstevel@tonic-gate zargp->arg.cmd = zcmd; 45637c478bd9Sstevel@tonic-gate zargp->arg.uniqid = zone->zone_uniqid; 4564*3f2f09c1Sdp zargp->zone = zone; 45657c478bd9Sstevel@tonic-gate (void) strcpy(zargp->arg.locale, "C"); 4566*3f2f09c1Sdp /* mdep was already copied in for us by uadmin */ 4567*3f2f09c1Sdp if (mdep != NULL) 4568*3f2f09c1Sdp (void) strlcpy(zargp->arg.bootbuf, mdep, 4569*3f2f09c1Sdp sizeof (zargp->arg.bootbuf)); 4570*3f2f09c1Sdp zone_hold(zone); 45717c478bd9Sstevel@tonic-gate 45727c478bd9Sstevel@tonic-gate (void) thread_create(NULL, 0, zone_ki_call_zoneadmd, zargp, 0, &p0, 45737c478bd9Sstevel@tonic-gate TS_RUN, minclsyspri); 45747c478bd9Sstevel@tonic-gate exit(CLD_EXITED, 0); 45757c478bd9Sstevel@tonic-gate 45767c478bd9Sstevel@tonic-gate return (EINVAL); 45777c478bd9Sstevel@tonic-gate } 45787c478bd9Sstevel@tonic-gate 45797c478bd9Sstevel@tonic-gate /* 45807c478bd9Sstevel@tonic-gate * Entry point so kadmin(A_SHUTDOWN, ...) can set the global zone's 45817c478bd9Sstevel@tonic-gate * status to ZONE_IS_SHUTTING_DOWN. 45827c478bd9Sstevel@tonic-gate */ 45837c478bd9Sstevel@tonic-gate void 45847c478bd9Sstevel@tonic-gate zone_shutdown_global(void) 45857c478bd9Sstevel@tonic-gate { 45867c478bd9Sstevel@tonic-gate ASSERT(curproc->p_zone == global_zone); 45877c478bd9Sstevel@tonic-gate 45887c478bd9Sstevel@tonic-gate mutex_enter(&zone_status_lock); 45897c478bd9Sstevel@tonic-gate ASSERT(zone_status_get(global_zone) == ZONE_IS_RUNNING); 45907c478bd9Sstevel@tonic-gate zone_status_set(global_zone, ZONE_IS_SHUTTING_DOWN); 45917c478bd9Sstevel@tonic-gate mutex_exit(&zone_status_lock); 45927c478bd9Sstevel@tonic-gate } 4593fa9e4066Sahrens 4594fa9e4066Sahrens /* 4595fa9e4066Sahrens * Returns true if the named dataset is visible in the current zone. 4596fa9e4066Sahrens * The 'write' parameter is set to 1 if the dataset is also writable. 4597fa9e4066Sahrens */ 4598fa9e4066Sahrens int 4599fa9e4066Sahrens zone_dataset_visible(const char *dataset, int *write) 4600fa9e4066Sahrens { 4601fa9e4066Sahrens zone_dataset_t *zd; 4602fa9e4066Sahrens size_t len; 4603fa9e4066Sahrens zone_t *zone = curproc->p_zone; 4604fa9e4066Sahrens 4605fa9e4066Sahrens if (dataset[0] == '\0') 4606fa9e4066Sahrens return (0); 4607fa9e4066Sahrens 4608fa9e4066Sahrens /* 4609fa9e4066Sahrens * Walk the list once, looking for datasets which match exactly, or 4610fa9e4066Sahrens * specify a dataset underneath an exported dataset. If found, return 4611fa9e4066Sahrens * true and note that it is writable. 4612fa9e4066Sahrens */ 4613fa9e4066Sahrens for (zd = list_head(&zone->zone_datasets); zd != NULL; 4614fa9e4066Sahrens zd = list_next(&zone->zone_datasets, zd)) { 4615fa9e4066Sahrens 4616fa9e4066Sahrens len = strlen(zd->zd_dataset); 4617fa9e4066Sahrens if (strlen(dataset) >= len && 4618fa9e4066Sahrens bcmp(dataset, zd->zd_dataset, len) == 0 && 461995c9592aSmaybee (dataset[len] == '\0' || dataset[len] == '/' || 462095c9592aSmaybee dataset[len] == '@')) { 4621fa9e4066Sahrens if (write) 4622fa9e4066Sahrens *write = 1; 4623fa9e4066Sahrens return (1); 4624fa9e4066Sahrens } 4625fa9e4066Sahrens } 4626fa9e4066Sahrens 4627fa9e4066Sahrens /* 4628fa9e4066Sahrens * Walk the list a second time, searching for datasets which are parents 4629fa9e4066Sahrens * of exported datasets. These should be visible, but read-only. 4630fa9e4066Sahrens * 4631fa9e4066Sahrens * Note that we also have to support forms such as 'pool/dataset/', with 4632fa9e4066Sahrens * a trailing slash. 4633fa9e4066Sahrens */ 4634fa9e4066Sahrens for (zd = list_head(&zone->zone_datasets); zd != NULL; 4635fa9e4066Sahrens zd = list_next(&zone->zone_datasets, zd)) { 4636fa9e4066Sahrens 4637fa9e4066Sahrens len = strlen(dataset); 4638fa9e4066Sahrens if (dataset[len - 1] == '/') 4639fa9e4066Sahrens len--; /* Ignore trailing slash */ 4640fa9e4066Sahrens if (len < strlen(zd->zd_dataset) && 4641fa9e4066Sahrens bcmp(dataset, zd->zd_dataset, len) == 0 && 4642fa9e4066Sahrens zd->zd_dataset[len] == '/') { 4643fa9e4066Sahrens if (write) 4644fa9e4066Sahrens *write = 0; 4645fa9e4066Sahrens return (1); 4646fa9e4066Sahrens } 4647fa9e4066Sahrens } 4648fa9e4066Sahrens 4649fa9e4066Sahrens return (0); 4650fa9e4066Sahrens } 465145916cd2Sjpk 465245916cd2Sjpk /* 465345916cd2Sjpk * zone_find_by_any_path() - 465445916cd2Sjpk * 465545916cd2Sjpk * kernel-private routine similar to zone_find_by_path(), but which 465645916cd2Sjpk * effectively compares against zone paths rather than zonerootpath 465745916cd2Sjpk * (i.e., the last component of zonerootpaths, which should be "root/", 465845916cd2Sjpk * are not compared.) This is done in order to accurately identify all 465945916cd2Sjpk * paths, whether zone-visible or not, including those which are parallel 466045916cd2Sjpk * to /root/, such as /dev/, /home/, etc... 466145916cd2Sjpk * 466245916cd2Sjpk * If the specified path does not fall under any zone path then global 466345916cd2Sjpk * zone is returned. 466445916cd2Sjpk * 466545916cd2Sjpk * The treat_abs parameter indicates whether the path should be treated as 466645916cd2Sjpk * an absolute path although it does not begin with "/". (This supports 466745916cd2Sjpk * nfs mount syntax such as host:any/path.) 466845916cd2Sjpk * 466945916cd2Sjpk * The caller is responsible for zone_rele of the returned zone. 467045916cd2Sjpk */ 467145916cd2Sjpk zone_t * 467245916cd2Sjpk zone_find_by_any_path(const char *path, boolean_t treat_abs) 467345916cd2Sjpk { 467445916cd2Sjpk zone_t *zone; 467545916cd2Sjpk int path_offset = 0; 467645916cd2Sjpk 467745916cd2Sjpk if (path == NULL) { 467845916cd2Sjpk zone_hold(global_zone); 467945916cd2Sjpk return (global_zone); 468045916cd2Sjpk } 468145916cd2Sjpk 468245916cd2Sjpk if (*path != '/') { 468345916cd2Sjpk ASSERT(treat_abs); 468445916cd2Sjpk path_offset = 1; 468545916cd2Sjpk } 468645916cd2Sjpk 468745916cd2Sjpk mutex_enter(&zonehash_lock); 468845916cd2Sjpk for (zone = list_head(&zone_active); zone != NULL; 468945916cd2Sjpk zone = list_next(&zone_active, zone)) { 469045916cd2Sjpk char *c; 469145916cd2Sjpk size_t pathlen; 46920f95d722Smp char *rootpath_start; 469345916cd2Sjpk 469445916cd2Sjpk if (zone == global_zone) /* skip global zone */ 469545916cd2Sjpk continue; 469645916cd2Sjpk 469745916cd2Sjpk /* scan backwards to find start of last component */ 469845916cd2Sjpk c = zone->zone_rootpath + zone->zone_rootpathlen - 2; 469945916cd2Sjpk do { 470045916cd2Sjpk c--; 470145916cd2Sjpk } while (*c != '/'); 470245916cd2Sjpk 47030f95d722Smp pathlen = c - zone->zone_rootpath + 1 - path_offset; 47040f95d722Smp rootpath_start = (zone->zone_rootpath + path_offset); 47050f95d722Smp if (strncmp(path, rootpath_start, pathlen) == 0) 470645916cd2Sjpk break; 470745916cd2Sjpk } 470845916cd2Sjpk if (zone == NULL) 470945916cd2Sjpk zone = global_zone; 471045916cd2Sjpk zone_hold(zone); 471145916cd2Sjpk mutex_exit(&zonehash_lock); 471245916cd2Sjpk return (zone); 471345916cd2Sjpk } 4714