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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdlib.h>
#include <sys/types.h>
#include <stdio.h>
#include <sys/mnttab.h>
#include <sys/mntent.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <string.h>
#include <fcntl.h>
#include "statcommon.h"
#include "dsr.h"
static time_t mtime;
mnt_t *nfs;
static mnt_t *ufs;
static void build_mnt_list(FILE *);
mnt_t *
lookup_mntent_byname(char *nm)
{
mnt_t *rv = 0;
mnt_t *minfo;
uint_t did_nfs;
if (nm) {
minfo = ufs;
did_nfs = 0;
while (minfo) {
if (strcmp(nm, minfo->device_name)) {
if (minfo->next != 0)
minfo = minfo->next;
else if (did_nfs == 0) {
minfo = nfs;
did_nfs = 1;
}
else
minfo = 0;
} else {
rv = minfo;
break;
}
}
}
return (rv);
}
void
do_mnttab(void)
{
struct stat buf;
FILE *mpt;
struct flock lb;
if (stat(MNTTAB, &buf) == 0) {
if (buf.st_mtime != mtime) {
/*
* File has changed. Get the new file.
*/
if ((mpt = fopen(MNTTAB, "r"))) {
lb.l_type = F_RDLCK;
lb.l_whence = 0;
lb.l_start = 0;
lb.l_len = 0;
(void) fcntl(fileno(mpt), F_SETLKW, &lb);
build_mnt_list(mpt);
mtime = buf.st_mtime;
/*
* Lock goes away when we close the file.
*/
(void) fclose(mpt);
}
}
}
}
static void
build_mnt_list(FILE *mpt)
{
mnt_t *item;
mnt_t **which;
mnt_t *tmp;
int found;
struct extmnttab mnt;
if (mpt) {
while (nfs) {
free(nfs->device_name);
free(nfs->mount_point);
free(nfs->devinfo);
tmp = nfs;
nfs = nfs->next;
free(tmp);
}
while (ufs) {
free(ufs->device_name);
free(ufs->mount_point);
free(ufs->devinfo);
tmp = ufs;
ufs = ufs->next;
free(tmp);
}
(void) memset(&mnt, 0, sizeof (struct extmnttab));
resetmnttab(mpt);
while ((found = getextmntent(mpt, &mnt,
sizeof (struct extmnttab))) != -1) {
if (found == 0) {
if (strcmp(mnt.mnt_fstype, MNTTYPE_UFS) == 0)
which = &ufs;
else if (strcmp(mnt.mnt_fstype,
MNTTYPE_NFS) == 0)
which = &nfs;
else
which = 0;
if (which) {
item = safe_alloc(sizeof (mnt_t));
item->device_name =
safe_strdup(mnt.mnt_special);
item->mount_point =
safe_strdup(mnt.mnt_mountp);
item->devinfo =
safe_strdup(mnt.mnt_mntopts);
item->minor = mnt.mnt_minor;
item->next = *which;
*which = item;
}
}
}
}
}
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