xref: /onnv-gate/usr/src/cmd/fs.d/autofs/auto_mnttab.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  *	auto_mnttab.c
24*0Sstevel@tonic-gate  *
25*0Sstevel@tonic-gate  *	Copyright (c) 1988-1999 Sun Microsystems Inc
26*0Sstevel@tonic-gate  *	All Rights Reserved.
27*0Sstevel@tonic-gate  */
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate #include <stdio.h>
32*0Sstevel@tonic-gate #include <sys/mnttab.h>
33*0Sstevel@tonic-gate #include <sys/mkdev.h>
34*0Sstevel@tonic-gate #include "automount.h"
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate static mutex_t mnttab_lock = DEFAULTMUTEX;
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate /*
39*0Sstevel@tonic-gate  * XXX - Serialize calls to fsgetmntlist, so that threads can get consistent
40*0Sstevel@tonic-gate  * snapshots of the in-kernel mnttab.  This function should be removed
41*0Sstevel@tonic-gate  * once getextmntent is made MT-safe and callers can invoke fsgetmntlist
42*0Sstevel@tonic-gate  * directly.
43*0Sstevel@tonic-gate  */
44*0Sstevel@tonic-gate struct mntlist *
getmntlist()45*0Sstevel@tonic-gate getmntlist()
46*0Sstevel@tonic-gate {
47*0Sstevel@tonic-gate 	struct mntlist *mntl;
48*0Sstevel@tonic-gate 
49*0Sstevel@tonic-gate 	(void) mutex_lock(&mnttab_lock);
50*0Sstevel@tonic-gate 	mntl = fsgetmntlist();
51*0Sstevel@tonic-gate 	(void) mutex_unlock(&mnttab_lock);
52*0Sstevel@tonic-gate 	return (mntl);
53*0Sstevel@tonic-gate }
54*0Sstevel@tonic-gate 
55*0Sstevel@tonic-gate /*
56*0Sstevel@tonic-gate  * Return device number from extmnttab struct
57*0Sstevel@tonic-gate  */
58*0Sstevel@tonic-gate dev_t
get_devid(mnt)59*0Sstevel@tonic-gate get_devid(mnt)
60*0Sstevel@tonic-gate 	struct extmnttab *mnt;
61*0Sstevel@tonic-gate {
62*0Sstevel@tonic-gate 	return (makedev(mnt->mnt_major, mnt->mnt_minor));
63*0Sstevel@tonic-gate }
64