1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <sys/systm.h> 31 #include <sys/zone.h> 32 #include <sys/errno.h> 33 #include <sys/cred.h> 34 #include <sys/policy.h> 35 36 #include <sys/fs/autofs.h> 37 38 int 39 autofssys(enum autofssys_op opcode, uintptr_t arg) 40 { 41 int error = 0; 42 43 switch (opcode) { 44 case AUTOFS_UNMOUNTALL: { /* attempt to remove all autofs mounts */ 45 zone_t *zone; 46 zoneid_t zoneid; 47 struct autofs_globals *fngp; 48 49 zoneid = (zoneid_t)arg; 50 if (secpolicy_fs_unmount(CRED(), NULL) != 0 || 51 crgetzoneid(CRED()) != GLOBAL_ZONEID) 52 return (set_errno(EPERM)); 53 if ((zone = zone_find_by_id(zoneid)) == NULL) 54 return (set_errno(EINVAL)); 55 fngp = zone_getspecific(autofs_key, zone); 56 if (fngp == NULL) { 57 zone_rele(zone); 58 /* 59 * There were no mounts, so no work to do. Success. 60 */ 61 return (0); 62 } 63 unmount_tree(fngp, 1); 64 zone_rele(zone); 65 break; 66 } 67 default: 68 error = EINVAL; 69 break; 70 } 71 return (error ? set_errno(error) : 0); 72 } 73