xref: /onnv-gate/usr/src/uts/common/fs/autofs/auto_sys.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate #include <sys/types.h>
30*0Sstevel@tonic-gate #include <sys/systm.h>
31*0Sstevel@tonic-gate #include <sys/zone.h>
32*0Sstevel@tonic-gate #include <sys/errno.h>
33*0Sstevel@tonic-gate #include <sys/cred.h>
34*0Sstevel@tonic-gate #include <sys/policy.h>
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate #include <sys/fs/autofs.h>
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate int
39*0Sstevel@tonic-gate autofssys(enum autofssys_op opcode, uintptr_t arg)
40*0Sstevel@tonic-gate {
41*0Sstevel@tonic-gate 	int error = 0;
42*0Sstevel@tonic-gate 
43*0Sstevel@tonic-gate 	switch (opcode) {
44*0Sstevel@tonic-gate 	case AUTOFS_UNMOUNTALL: { /* attempt to remove all autofs mounts */
45*0Sstevel@tonic-gate 		zone_t *zone;
46*0Sstevel@tonic-gate 		zoneid_t zoneid;
47*0Sstevel@tonic-gate 		struct autofs_globals *fngp;
48*0Sstevel@tonic-gate 
49*0Sstevel@tonic-gate 		zoneid = (zoneid_t)arg;
50*0Sstevel@tonic-gate 		if (secpolicy_fs_unmount(CRED(), NULL) != 0 ||
51*0Sstevel@tonic-gate 		    crgetzoneid(CRED()) != GLOBAL_ZONEID)
52*0Sstevel@tonic-gate 			return (set_errno(EPERM));
53*0Sstevel@tonic-gate 		if ((zone = zone_find_by_id(zoneid)) == NULL)
54*0Sstevel@tonic-gate 			return (set_errno(EINVAL));
55*0Sstevel@tonic-gate 		fngp = zone_getspecific(autofs_key, zone);
56*0Sstevel@tonic-gate 		if (fngp == NULL) {
57*0Sstevel@tonic-gate 			zone_rele(zone);
58*0Sstevel@tonic-gate 			/*
59*0Sstevel@tonic-gate 			 * There were no mounts, so no work to do. Success.
60*0Sstevel@tonic-gate 			 */
61*0Sstevel@tonic-gate 			return (0);
62*0Sstevel@tonic-gate 		}
63*0Sstevel@tonic-gate 		unmount_tree(fngp, 1);
64*0Sstevel@tonic-gate 		zone_rele(zone);
65*0Sstevel@tonic-gate 		break;
66*0Sstevel@tonic-gate 	}
67*0Sstevel@tonic-gate 	default:
68*0Sstevel@tonic-gate 		error = EINVAL;
69*0Sstevel@tonic-gate 		break;
70*0Sstevel@tonic-gate 	}
71*0Sstevel@tonic-gate 	return (error ? set_errno(error) : 0);
72*0Sstevel@tonic-gate }
73