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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/systm.h> 30 #include <sys/zone.h> 31 #include <sys/errno.h> 32 #include <sys/cred.h> 33 #include <sys/policy.h> 34 35 #include <sys/fs/autofs.h> 36 37 extern struct autofs_globals *autofs_zone_init(void); 38 39 int 40 autofssys(enum autofssys_op opcode, uintptr_t arg) 41 { 42 int error = 0; 43 44 switch (opcode) { 45 case AUTOFS_UNMOUNTALL: { /* attempt to remove all autofs mounts */ 46 zone_t *zone; 47 zoneid_t zoneid; 48 struct autofs_globals *fngp; 49 50 zoneid = (zoneid_t)arg; 51 if (secpolicy_fs_unmount(CRED(), NULL) != 0 || 52 crgetzoneid(CRED()) != GLOBAL_ZONEID) 53 return (set_errno(EPERM)); 54 if ((zone = zone_find_by_id(zoneid)) == NULL) 55 return (set_errno(EINVAL)); 56 fngp = zone_getspecific(autofs_key, zone); 57 if (fngp == NULL) { 58 zone_rele(zone); 59 /* 60 * There were no mounts, so no work to do. Success. 61 */ 62 return (0); 63 } 64 unmount_tree(fngp, 1); 65 zone_rele(zone); 66 break; 67 } 68 case AUTOFS_SETDOOR: { /* set door handle for zone */ 69 uint_t did; 70 struct autofs_globals *fngp; 71 72 fngp = zone_getspecific(autofs_key, curproc->p_zone); 73 if (fngp == NULL) { 74 fngp = autofs_zone_init(); 75 (void) zone_setspecific(autofs_key, 76 curproc->p_zone, fngp); 77 } 78 ASSERT(fngp != NULL); 79 80 if (copyin((uint_t *)arg, &did, sizeof (uint_t))) 81 return (set_errno(EFAULT)); 82 83 mutex_enter(&fngp->fng_autofs_daemon_lock); 84 if (fngp->fng_autofs_daemon_dh) 85 door_ki_rele(fngp->fng_autofs_daemon_dh); 86 fngp->fng_autofs_daemon_dh = door_ki_lookup(did); 87 fngp->fng_autofs_pid = curproc->p_pid; 88 mutex_exit(&fngp->fng_autofs_daemon_lock); 89 break; 90 } 91 default: 92 error = EINVAL; 93 break; 94 } 95 return (error ? set_errno(error) : 0); 96 } 97