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