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 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * Copyright 2005 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 #pragma weak getzoneid = _getzoneid 307c478bd9Sstevel@tonic-gate #pragma weak getzoneidbyname = _getzoneidbyname 317c478bd9Sstevel@tonic-gate #pragma weak getzonenamebyid = _getzonenamebyid 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #include "synonyms.h" 347c478bd9Sstevel@tonic-gate #include <sys/types.h> 357c478bd9Sstevel@tonic-gate #include <sys/syscall.h> 367c478bd9Sstevel@tonic-gate #include <sys/zone.h> 377c478bd9Sstevel@tonic-gate #include <sys/priv.h> 387c478bd9Sstevel@tonic-gate #include <zone.h> 397c478bd9Sstevel@tonic-gate #include <dlfcn.h> 407c478bd9Sstevel@tonic-gate #include <stdlib.h> 417c478bd9Sstevel@tonic-gate #include <errno.h> 427c478bd9Sstevel@tonic-gate 43*fa9e4066Sahrens extern zoneid_t 44*fa9e4066Sahrens zone_create(const char *name, const char *root, const struct priv_set *privs, 45*fa9e4066Sahrens const char *rctls, size_t rctlsz, const char *zfs, size_t zfssz, 46*fa9e4066Sahrens int *extended_error) 477c478bd9Sstevel@tonic-gate { 487c478bd9Sstevel@tonic-gate zone_def zd; 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate zd.zone_name = name; 517c478bd9Sstevel@tonic-gate zd.zone_root = root; 527c478bd9Sstevel@tonic-gate zd.zone_privs = privs; 537c478bd9Sstevel@tonic-gate zd.rctlbuf = rctls; 547c478bd9Sstevel@tonic-gate zd.rctlbufsz = rctlsz; 55*fa9e4066Sahrens zd.zfsbuf = zfs; 56*fa9e4066Sahrens zd.zfsbufsz = zfssz; 577c478bd9Sstevel@tonic-gate zd.extended_error = extended_error; 587c478bd9Sstevel@tonic-gate 59*fa9e4066Sahrens return ((zoneid_t)syscall(SYS_zone, ZONE_CREATE, &zd)); 607c478bd9Sstevel@tonic-gate } 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate int 637c478bd9Sstevel@tonic-gate zone_boot(zoneid_t zoneid, const char *bootargs) 647c478bd9Sstevel@tonic-gate { 657c478bd9Sstevel@tonic-gate return (syscall(SYS_zone, ZONE_BOOT, zoneid, bootargs)); 667c478bd9Sstevel@tonic-gate } 677c478bd9Sstevel@tonic-gate 687c478bd9Sstevel@tonic-gate int 697c478bd9Sstevel@tonic-gate zone_shutdown(zoneid_t zoneid) 707c478bd9Sstevel@tonic-gate { 717c478bd9Sstevel@tonic-gate return (syscall(SYS_zone, ZONE_SHUTDOWN, zoneid)); 727c478bd9Sstevel@tonic-gate } 737c478bd9Sstevel@tonic-gate 747c478bd9Sstevel@tonic-gate int 757c478bd9Sstevel@tonic-gate zone_destroy(zoneid_t zoneid) 767c478bd9Sstevel@tonic-gate { 777c478bd9Sstevel@tonic-gate return (syscall(SYS_zone, ZONE_DESTROY, zoneid)); 787c478bd9Sstevel@tonic-gate } 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate ssize_t 817c478bd9Sstevel@tonic-gate zone_getattr(zoneid_t zoneid, int attr, void *valp, size_t size) 827c478bd9Sstevel@tonic-gate { 837c478bd9Sstevel@tonic-gate sysret_t rval; 847c478bd9Sstevel@tonic-gate int error; 857c478bd9Sstevel@tonic-gate 867c478bd9Sstevel@tonic-gate error = __systemcall(&rval, SYS_zone, ZONE_GETATTR, zoneid, 877c478bd9Sstevel@tonic-gate attr, valp, size); 887c478bd9Sstevel@tonic-gate if (error) 897c478bd9Sstevel@tonic-gate (void) __set_errno(error); 907c478bd9Sstevel@tonic-gate return ((ssize_t)rval.sys_rval1); 917c478bd9Sstevel@tonic-gate } 927c478bd9Sstevel@tonic-gate 937c478bd9Sstevel@tonic-gate int 947c478bd9Sstevel@tonic-gate zone_enter(zoneid_t zoneid) 957c478bd9Sstevel@tonic-gate { 967c478bd9Sstevel@tonic-gate return (syscall(SYS_zone, ZONE_ENTER, zoneid)); 977c478bd9Sstevel@tonic-gate } 987c478bd9Sstevel@tonic-gate 997c478bd9Sstevel@tonic-gate /* 1007c478bd9Sstevel@tonic-gate * Get id (if any) for specified zone. 1017c478bd9Sstevel@tonic-gate * 1027c478bd9Sstevel@tonic-gate * Call the real zone_get_id() in libzonecfg.so.1 if it can be found. 1037c478bd9Sstevel@tonic-gate * Otherwise, perform a stripped-down version of the function. 1047c478bd9Sstevel@tonic-gate * Any changes in one version should probably be reflected in the other. 1057c478bd9Sstevel@tonic-gate * 1067c478bd9Sstevel@tonic-gate * This stripped-down version of the function only checks for active 1077c478bd9Sstevel@tonic-gate * (booted) zones, by numeric id or name. 1087c478bd9Sstevel@tonic-gate */ 1097c478bd9Sstevel@tonic-gate 1107c478bd9Sstevel@tonic-gate typedef int (*zone_get_id_t)(const char *, zoneid_t *); 1117c478bd9Sstevel@tonic-gate static zone_get_id_t real_zone_get_id = NULL; 1127c478bd9Sstevel@tonic-gate 1137c478bd9Sstevel@tonic-gate int 1147c478bd9Sstevel@tonic-gate zone_get_id(const char *str, zoneid_t *zip) 1157c478bd9Sstevel@tonic-gate { 1167c478bd9Sstevel@tonic-gate zoneid_t zoneid; 1177c478bd9Sstevel@tonic-gate char *cp; 1187c478bd9Sstevel@tonic-gate 1197c478bd9Sstevel@tonic-gate /* 1207c478bd9Sstevel@tonic-gate * The first time we are called, attempt to dlopen() libzonecfg.so.1 1217c478bd9Sstevel@tonic-gate * and get a pointer to the real zone_get_id(). 1227c478bd9Sstevel@tonic-gate * If we fail, set our pointer to -1 so we won't try again. 1237c478bd9Sstevel@tonic-gate */ 1247c478bd9Sstevel@tonic-gate if (real_zone_get_id == NULL) { 1257c478bd9Sstevel@tonic-gate /* 1267c478bd9Sstevel@tonic-gate * There's no harm in doing this more than once, even 1277c478bd9Sstevel@tonic-gate * concurrently. We will get the same result each time, 1287c478bd9Sstevel@tonic-gate * and the dynamic linker will single-thread the dlopen() 1297c478bd9Sstevel@tonic-gate * with its own internal lock. The worst that can happen 1307c478bd9Sstevel@tonic-gate * is that the handle gets a reference count greater than 1317c478bd9Sstevel@tonic-gate * one, which doesn't matter since we never dlclose() 1327c478bd9Sstevel@tonic-gate * the handle if we successfully find the symbol; the 1337c478bd9Sstevel@tonic-gate * library just stays in the address space until exit(). 1347c478bd9Sstevel@tonic-gate */ 1357c478bd9Sstevel@tonic-gate void *dlhandle = dlopen("libzonecfg.so.1", RTLD_LAZY); 1367c478bd9Sstevel@tonic-gate void *sym = (void *)(-1); 1377c478bd9Sstevel@tonic-gate 1387c478bd9Sstevel@tonic-gate if (dlhandle != NULL && 1397c478bd9Sstevel@tonic-gate (sym = dlsym(dlhandle, "zone_get_id")) == NULL) { 1407c478bd9Sstevel@tonic-gate sym = (void *)(-1); 1417c478bd9Sstevel@tonic-gate (void) dlclose(dlhandle); 1427c478bd9Sstevel@tonic-gate } 1437c478bd9Sstevel@tonic-gate real_zone_get_id = (zone_get_id_t)sym; 1447c478bd9Sstevel@tonic-gate } 1457c478bd9Sstevel@tonic-gate 1467c478bd9Sstevel@tonic-gate /* 1477c478bd9Sstevel@tonic-gate * If we've successfully loaded it, call the real zone_get_id(). 1487c478bd9Sstevel@tonic-gate * Otherwise, perform our stripped-down version of the code. 1497c478bd9Sstevel@tonic-gate */ 1507c478bd9Sstevel@tonic-gate if (real_zone_get_id != (zone_get_id_t)(-1)) 1517c478bd9Sstevel@tonic-gate return (real_zone_get_id(str, zip)); 1527c478bd9Sstevel@tonic-gate 1537c478bd9Sstevel@tonic-gate /* first try looking for active zone by id */ 1547c478bd9Sstevel@tonic-gate errno = 0; 1557c478bd9Sstevel@tonic-gate zoneid = (zoneid_t)strtol(str, &cp, 0); 1567c478bd9Sstevel@tonic-gate if (errno == 0 && cp != str && *cp == '\0' && 1577c478bd9Sstevel@tonic-gate getzonenamebyid(zoneid, NULL, 0) != -1) { 1587c478bd9Sstevel@tonic-gate *zip = zoneid; 1597c478bd9Sstevel@tonic-gate return (0); 1607c478bd9Sstevel@tonic-gate } 1617c478bd9Sstevel@tonic-gate 1627c478bd9Sstevel@tonic-gate /* then look for active zone by name */ 1637c478bd9Sstevel@tonic-gate if ((zoneid = getzoneidbyname(str)) != -1) { 1647c478bd9Sstevel@tonic-gate *zip = zoneid; 1657c478bd9Sstevel@tonic-gate return (0); 1667c478bd9Sstevel@tonic-gate } 1677c478bd9Sstevel@tonic-gate 1687c478bd9Sstevel@tonic-gate /* not an active zone, return error */ 1697c478bd9Sstevel@tonic-gate return (-1); 1707c478bd9Sstevel@tonic-gate } 1717c478bd9Sstevel@tonic-gate 1727c478bd9Sstevel@tonic-gate int 1737c478bd9Sstevel@tonic-gate zone_list(zoneid_t *zonelist, uint_t *numzones) 1747c478bd9Sstevel@tonic-gate { 1757c478bd9Sstevel@tonic-gate return (syscall(SYS_zone, ZONE_LIST, zonelist, numzones)); 1767c478bd9Sstevel@tonic-gate } 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate /* 1797c478bd9Sstevel@tonic-gate * Underlying implementation for getzoneid and getzoneidbyname. 1807c478bd9Sstevel@tonic-gate */ 1817c478bd9Sstevel@tonic-gate static zoneid_t 1827c478bd9Sstevel@tonic-gate zone_lookup(const char *name) 1837c478bd9Sstevel@tonic-gate { 1847c478bd9Sstevel@tonic-gate return ((zoneid_t)syscall(SYS_zone, ZONE_LOOKUP, name)); 1857c478bd9Sstevel@tonic-gate } 1867c478bd9Sstevel@tonic-gate 1877c478bd9Sstevel@tonic-gate zoneid_t 1887c478bd9Sstevel@tonic-gate getzoneid(void) 1897c478bd9Sstevel@tonic-gate { 1907c478bd9Sstevel@tonic-gate return (zone_lookup(NULL)); 1917c478bd9Sstevel@tonic-gate } 1927c478bd9Sstevel@tonic-gate 1937c478bd9Sstevel@tonic-gate zoneid_t 1947c478bd9Sstevel@tonic-gate getzoneidbyname(const char *zonename) 1957c478bd9Sstevel@tonic-gate { 1967c478bd9Sstevel@tonic-gate return (zone_lookup(zonename)); 1977c478bd9Sstevel@tonic-gate } 1987c478bd9Sstevel@tonic-gate 1997c478bd9Sstevel@tonic-gate ssize_t 2007c478bd9Sstevel@tonic-gate getzonenamebyid(zoneid_t zoneid, char *buf, size_t buflen) 2017c478bd9Sstevel@tonic-gate { 2027c478bd9Sstevel@tonic-gate return (zone_getattr(zoneid, ZONE_ATTR_NAME, buf, buflen)); 2037c478bd9Sstevel@tonic-gate } 204