1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate #include <stdlib.h> 30*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 31*7c478bd9Sstevel@tonic-gate #include <stdio.h> 32*7c478bd9Sstevel@tonic-gate #include <sys/mnttab.h> 33*7c478bd9Sstevel@tonic-gate #include <sys/mntent.h> 34*7c478bd9Sstevel@tonic-gate #include <sys/stat.h> 35*7c478bd9Sstevel@tonic-gate #include <sys/time.h> 36*7c478bd9Sstevel@tonic-gate #include <string.h> 37*7c478bd9Sstevel@tonic-gate #include <fcntl.h> 38*7c478bd9Sstevel@tonic-gate 39*7c478bd9Sstevel@tonic-gate #include "statcommon.h" 40*7c478bd9Sstevel@tonic-gate #include "dsr.h" 41*7c478bd9Sstevel@tonic-gate 42*7c478bd9Sstevel@tonic-gate static time_t mtime; 43*7c478bd9Sstevel@tonic-gate mnt_t *nfs; 44*7c478bd9Sstevel@tonic-gate static mnt_t *ufs; 45*7c478bd9Sstevel@tonic-gate 46*7c478bd9Sstevel@tonic-gate static void build_mnt_list(FILE *); 47*7c478bd9Sstevel@tonic-gate 48*7c478bd9Sstevel@tonic-gate mnt_t * 49*7c478bd9Sstevel@tonic-gate lookup_mntent_byname(char *nm) 50*7c478bd9Sstevel@tonic-gate { 51*7c478bd9Sstevel@tonic-gate mnt_t *rv = 0; 52*7c478bd9Sstevel@tonic-gate mnt_t *minfo; 53*7c478bd9Sstevel@tonic-gate uint_t did_nfs; 54*7c478bd9Sstevel@tonic-gate 55*7c478bd9Sstevel@tonic-gate 56*7c478bd9Sstevel@tonic-gate if (nm) { 57*7c478bd9Sstevel@tonic-gate minfo = ufs; 58*7c478bd9Sstevel@tonic-gate did_nfs = 0; 59*7c478bd9Sstevel@tonic-gate while (minfo) { 60*7c478bd9Sstevel@tonic-gate if (strcmp(nm, minfo->device_name)) { 61*7c478bd9Sstevel@tonic-gate if (minfo->next != 0) 62*7c478bd9Sstevel@tonic-gate minfo = minfo->next; 63*7c478bd9Sstevel@tonic-gate else if (did_nfs == 0) { 64*7c478bd9Sstevel@tonic-gate minfo = nfs; 65*7c478bd9Sstevel@tonic-gate did_nfs = 1; 66*7c478bd9Sstevel@tonic-gate } 67*7c478bd9Sstevel@tonic-gate else 68*7c478bd9Sstevel@tonic-gate minfo = 0; 69*7c478bd9Sstevel@tonic-gate } else { 70*7c478bd9Sstevel@tonic-gate rv = minfo; 71*7c478bd9Sstevel@tonic-gate break; 72*7c478bd9Sstevel@tonic-gate } 73*7c478bd9Sstevel@tonic-gate } 74*7c478bd9Sstevel@tonic-gate } 75*7c478bd9Sstevel@tonic-gate return (rv); 76*7c478bd9Sstevel@tonic-gate } 77*7c478bd9Sstevel@tonic-gate 78*7c478bd9Sstevel@tonic-gate void 79*7c478bd9Sstevel@tonic-gate do_mnttab(void) 80*7c478bd9Sstevel@tonic-gate { 81*7c478bd9Sstevel@tonic-gate struct stat buf; 82*7c478bd9Sstevel@tonic-gate FILE *mpt; 83*7c478bd9Sstevel@tonic-gate struct flock lb; 84*7c478bd9Sstevel@tonic-gate 85*7c478bd9Sstevel@tonic-gate if (stat(MNTTAB, &buf) == 0) { 86*7c478bd9Sstevel@tonic-gate if (buf.st_mtime != mtime) { 87*7c478bd9Sstevel@tonic-gate /* 88*7c478bd9Sstevel@tonic-gate * File has changed. Get the new file. 89*7c478bd9Sstevel@tonic-gate */ 90*7c478bd9Sstevel@tonic-gate if ((mpt = fopen(MNTTAB, "r"))) { 91*7c478bd9Sstevel@tonic-gate lb.l_type = F_RDLCK; 92*7c478bd9Sstevel@tonic-gate lb.l_whence = 0; 93*7c478bd9Sstevel@tonic-gate lb.l_start = 0; 94*7c478bd9Sstevel@tonic-gate lb.l_len = 0; 95*7c478bd9Sstevel@tonic-gate (void) fcntl(fileno(mpt), F_SETLKW, &lb); 96*7c478bd9Sstevel@tonic-gate build_mnt_list(mpt); 97*7c478bd9Sstevel@tonic-gate mtime = buf.st_mtime; 98*7c478bd9Sstevel@tonic-gate /* 99*7c478bd9Sstevel@tonic-gate * Lock goes away when we close the file. 100*7c478bd9Sstevel@tonic-gate */ 101*7c478bd9Sstevel@tonic-gate (void) fclose(mpt); 102*7c478bd9Sstevel@tonic-gate } 103*7c478bd9Sstevel@tonic-gate } 104*7c478bd9Sstevel@tonic-gate } 105*7c478bd9Sstevel@tonic-gate } 106*7c478bd9Sstevel@tonic-gate 107*7c478bd9Sstevel@tonic-gate static void 108*7c478bd9Sstevel@tonic-gate build_mnt_list(FILE *mpt) 109*7c478bd9Sstevel@tonic-gate { 110*7c478bd9Sstevel@tonic-gate mnt_t *item; 111*7c478bd9Sstevel@tonic-gate mnt_t **which; 112*7c478bd9Sstevel@tonic-gate mnt_t *tmp; 113*7c478bd9Sstevel@tonic-gate int found; 114*7c478bd9Sstevel@tonic-gate struct extmnttab mnt; 115*7c478bd9Sstevel@tonic-gate 116*7c478bd9Sstevel@tonic-gate if (mpt) { 117*7c478bd9Sstevel@tonic-gate while (nfs) { 118*7c478bd9Sstevel@tonic-gate free(nfs->device_name); 119*7c478bd9Sstevel@tonic-gate free(nfs->mount_point); 120*7c478bd9Sstevel@tonic-gate free(nfs->devinfo); 121*7c478bd9Sstevel@tonic-gate tmp = nfs; 122*7c478bd9Sstevel@tonic-gate nfs = nfs->next; 123*7c478bd9Sstevel@tonic-gate free(tmp); 124*7c478bd9Sstevel@tonic-gate } 125*7c478bd9Sstevel@tonic-gate while (ufs) { 126*7c478bd9Sstevel@tonic-gate free(ufs->device_name); 127*7c478bd9Sstevel@tonic-gate free(ufs->mount_point); 128*7c478bd9Sstevel@tonic-gate free(ufs->devinfo); 129*7c478bd9Sstevel@tonic-gate tmp = ufs; 130*7c478bd9Sstevel@tonic-gate ufs = ufs->next; 131*7c478bd9Sstevel@tonic-gate free(tmp); 132*7c478bd9Sstevel@tonic-gate } 133*7c478bd9Sstevel@tonic-gate (void) memset(&mnt, 0, sizeof (struct extmnttab)); 134*7c478bd9Sstevel@tonic-gate 135*7c478bd9Sstevel@tonic-gate resetmnttab(mpt); 136*7c478bd9Sstevel@tonic-gate while ((found = getextmntent(mpt, &mnt, 137*7c478bd9Sstevel@tonic-gate sizeof (struct extmnttab))) != -1) { 138*7c478bd9Sstevel@tonic-gate if (found == 0) { 139*7c478bd9Sstevel@tonic-gate if (strcmp(mnt.mnt_fstype, MNTTYPE_UFS) == 0) 140*7c478bd9Sstevel@tonic-gate which = &ufs; 141*7c478bd9Sstevel@tonic-gate else if (strcmp(mnt.mnt_fstype, 142*7c478bd9Sstevel@tonic-gate MNTTYPE_NFS) == 0) 143*7c478bd9Sstevel@tonic-gate which = &nfs; 144*7c478bd9Sstevel@tonic-gate else 145*7c478bd9Sstevel@tonic-gate which = 0; 146*7c478bd9Sstevel@tonic-gate if (which) { 147*7c478bd9Sstevel@tonic-gate item = safe_alloc(sizeof (mnt_t)); 148*7c478bd9Sstevel@tonic-gate item->device_name = 149*7c478bd9Sstevel@tonic-gate safe_strdup(mnt.mnt_special); 150*7c478bd9Sstevel@tonic-gate item->mount_point = 151*7c478bd9Sstevel@tonic-gate safe_strdup(mnt.mnt_mountp); 152*7c478bd9Sstevel@tonic-gate item->devinfo = 153*7c478bd9Sstevel@tonic-gate safe_strdup(mnt.mnt_mntopts); 154*7c478bd9Sstevel@tonic-gate item->minor = mnt.mnt_minor; 155*7c478bd9Sstevel@tonic-gate item->next = *which; 156*7c478bd9Sstevel@tonic-gate *which = item; 157*7c478bd9Sstevel@tonic-gate } 158*7c478bd9Sstevel@tonic-gate } 159*7c478bd9Sstevel@tonic-gate } 160*7c478bd9Sstevel@tonic-gate } 161*7c478bd9Sstevel@tonic-gate } 162