10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 50Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 60Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 70Sstevel@tonic-gate * with the License. 80Sstevel@tonic-gate * 90Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 100Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 110Sstevel@tonic-gate * See the License for the specific language governing permissions 120Sstevel@tonic-gate * and limitations under the License. 130Sstevel@tonic-gate * 140Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 150Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 160Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 170Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 180Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 190Sstevel@tonic-gate * 200Sstevel@tonic-gate * CDDL HEADER END 210Sstevel@tonic-gate */ 220Sstevel@tonic-gate /* 23*645Sgjelinek * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 240Sstevel@tonic-gate * Use is subject to license terms. 250Sstevel@tonic-gate */ 260Sstevel@tonic-gate 270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 280Sstevel@tonic-gate 290Sstevel@tonic-gate 300Sstevel@tonic-gate /* 310Sstevel@tonic-gate * miscellaneous utilities 320Sstevel@tonic-gate */ 330Sstevel@tonic-gate 340Sstevel@tonic-gate #include <meta.h> 35*645Sgjelinek #include <zone.h> 360Sstevel@tonic-gate 370Sstevel@tonic-gate static int meta_fd = -1; 380Sstevel@tonic-gate static major_t meta_major; 390Sstevel@tonic-gate 400Sstevel@tonic-gate /* 410Sstevel@tonic-gate * open administrative device 420Sstevel@tonic-gate */ 430Sstevel@tonic-gate int 440Sstevel@tonic-gate open_admin( 450Sstevel@tonic-gate md_error_t *ep 460Sstevel@tonic-gate ) 470Sstevel@tonic-gate { 480Sstevel@tonic-gate struct stat buf; 490Sstevel@tonic-gate 500Sstevel@tonic-gate /* if not already open */ 510Sstevel@tonic-gate if (meta_fd < 0) { 520Sstevel@tonic-gate ulong_t dversion = 0; 530Sstevel@tonic-gate 540Sstevel@tonic-gate /* try read/write fall back to readonly */ 550Sstevel@tonic-gate if ((meta_fd = open(ADMSPECIAL, O_RDWR, 0)) < 0) { 56*645Sgjelinek if (errno == ENOENT && getzoneid() != GLOBAL_ZONEID) 57*645Sgjelinek return (mderror(ep, MDE_ZONE_ADMIN, NULL)); 580Sstevel@tonic-gate if (errno != EACCES) 590Sstevel@tonic-gate return (mdsyserror(ep, errno, ADMSPECIAL)); 600Sstevel@tonic-gate if ((meta_fd = open(ADMSPECIAL, O_RDONLY, 0)) < 0) 610Sstevel@tonic-gate return (mdsyserror(ep, errno, ADMSPECIAL)); 620Sstevel@tonic-gate } 630Sstevel@tonic-gate 640Sstevel@tonic-gate /* get major */ 650Sstevel@tonic-gate if (fstat(meta_fd, &buf) != 0) 660Sstevel@tonic-gate return (mdsyserror(ep, errno, ADMSPECIAL)); 670Sstevel@tonic-gate meta_major = major(buf.st_rdev); 680Sstevel@tonic-gate 690Sstevel@tonic-gate /* check driver version */ 700Sstevel@tonic-gate if (metaioctl(MD_IOCGVERSION, &dversion, ep, NULL) != 0) 710Sstevel@tonic-gate return (-1); 720Sstevel@tonic-gate if (dversion != MD_DVERSION) 730Sstevel@tonic-gate return (mderror(ep, MDE_DVERSION, NULL)); 740Sstevel@tonic-gate } 750Sstevel@tonic-gate 760Sstevel@tonic-gate /* return fd */ 770Sstevel@tonic-gate return (meta_fd); 780Sstevel@tonic-gate } 790Sstevel@tonic-gate 800Sstevel@tonic-gate int 810Sstevel@tonic-gate close_admin( 820Sstevel@tonic-gate md_error_t *ep 830Sstevel@tonic-gate ) 840Sstevel@tonic-gate { 850Sstevel@tonic-gate if (meta_fd >= 0) { 860Sstevel@tonic-gate if (close(meta_fd) == -1) 870Sstevel@tonic-gate return (mdsyserror(ep, errno, ADMSPECIAL)); 880Sstevel@tonic-gate meta_fd = -1; 890Sstevel@tonic-gate } 900Sstevel@tonic-gate 910Sstevel@tonic-gate return (0); 920Sstevel@tonic-gate } 930Sstevel@tonic-gate 940Sstevel@tonic-gate /* 950Sstevel@tonic-gate * Returns True if the md_dev64_t passed in is a metadevice. 960Sstevel@tonic-gate * Else it returns False. 970Sstevel@tonic-gate */ 980Sstevel@tonic-gate int 990Sstevel@tonic-gate meta_dev_ismeta( 1000Sstevel@tonic-gate md_dev64_t dev 1010Sstevel@tonic-gate ) 1020Sstevel@tonic-gate { 1030Sstevel@tonic-gate int fd; 1040Sstevel@tonic-gate md_error_t status = mdnullerror; 1050Sstevel@tonic-gate 1060Sstevel@tonic-gate fd = open_admin(&status); 1070Sstevel@tonic-gate assert(fd >= 0); 1080Sstevel@tonic-gate return (meta_getmajor(dev) == meta_major); 1090Sstevel@tonic-gate } 1100Sstevel@tonic-gate 1110Sstevel@tonic-gate 1120Sstevel@tonic-gate int 1130Sstevel@tonic-gate meta_get_nunits(md_error_t *ep) 1140Sstevel@tonic-gate { 1150Sstevel@tonic-gate 1160Sstevel@tonic-gate static set_t max_nunits = 0; 1170Sstevel@tonic-gate 1180Sstevel@tonic-gate if (max_nunits == 0) 1190Sstevel@tonic-gate if (metaioctl(MD_IOCGETNUNITS, &max_nunits, ep, NULL) != 0) 1200Sstevel@tonic-gate return (-1); 1210Sstevel@tonic-gate 1220Sstevel@tonic-gate return (max_nunits); 1230Sstevel@tonic-gate } 1240Sstevel@tonic-gate 1250Sstevel@tonic-gate md_dev64_t 1260Sstevel@tonic-gate metamakedev(minor_t mnum) 1270Sstevel@tonic-gate { 1280Sstevel@tonic-gate int fd; 1290Sstevel@tonic-gate md_error_t status = mdnullerror; 1300Sstevel@tonic-gate 1310Sstevel@tonic-gate fd = open_admin(&status); 1320Sstevel@tonic-gate 1330Sstevel@tonic-gate assert(fd >= 0); 1340Sstevel@tonic-gate 1350Sstevel@tonic-gate return (((md_dev64_t)meta_major << NBITSMINOR64) | mnum); 1360Sstevel@tonic-gate } 137