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 <stdlib.h> 30*0Sstevel@tonic-gate #include <sys/types.h> 31*0Sstevel@tonic-gate #include <stdio.h> 32*0Sstevel@tonic-gate #include <sys/mnttab.h> 33*0Sstevel@tonic-gate #include <sys/mntent.h> 34*0Sstevel@tonic-gate #include <sys/stat.h> 35*0Sstevel@tonic-gate #include <sys/time.h> 36*0Sstevel@tonic-gate #include <string.h> 37*0Sstevel@tonic-gate #include <fcntl.h> 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #include "statcommon.h" 40*0Sstevel@tonic-gate #include "dsr.h" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate static time_t mtime; 43*0Sstevel@tonic-gate mnt_t *nfs; 44*0Sstevel@tonic-gate static mnt_t *ufs; 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate static void build_mnt_list(FILE *); 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate mnt_t * 49*0Sstevel@tonic-gate lookup_mntent_byname(char *nm) 50*0Sstevel@tonic-gate { 51*0Sstevel@tonic-gate mnt_t *rv = 0; 52*0Sstevel@tonic-gate mnt_t *minfo; 53*0Sstevel@tonic-gate uint_t did_nfs; 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate if (nm) { 57*0Sstevel@tonic-gate minfo = ufs; 58*0Sstevel@tonic-gate did_nfs = 0; 59*0Sstevel@tonic-gate while (minfo) { 60*0Sstevel@tonic-gate if (strcmp(nm, minfo->device_name)) { 61*0Sstevel@tonic-gate if (minfo->next != 0) 62*0Sstevel@tonic-gate minfo = minfo->next; 63*0Sstevel@tonic-gate else if (did_nfs == 0) { 64*0Sstevel@tonic-gate minfo = nfs; 65*0Sstevel@tonic-gate did_nfs = 1; 66*0Sstevel@tonic-gate } 67*0Sstevel@tonic-gate else 68*0Sstevel@tonic-gate minfo = 0; 69*0Sstevel@tonic-gate } else { 70*0Sstevel@tonic-gate rv = minfo; 71*0Sstevel@tonic-gate break; 72*0Sstevel@tonic-gate } 73*0Sstevel@tonic-gate } 74*0Sstevel@tonic-gate } 75*0Sstevel@tonic-gate return (rv); 76*0Sstevel@tonic-gate } 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate void 79*0Sstevel@tonic-gate do_mnttab(void) 80*0Sstevel@tonic-gate { 81*0Sstevel@tonic-gate struct stat buf; 82*0Sstevel@tonic-gate FILE *mpt; 83*0Sstevel@tonic-gate struct flock lb; 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate if (stat(MNTTAB, &buf) == 0) { 86*0Sstevel@tonic-gate if (buf.st_mtime != mtime) { 87*0Sstevel@tonic-gate /* 88*0Sstevel@tonic-gate * File has changed. Get the new file. 89*0Sstevel@tonic-gate */ 90*0Sstevel@tonic-gate if ((mpt = fopen(MNTTAB, "r"))) { 91*0Sstevel@tonic-gate lb.l_type = F_RDLCK; 92*0Sstevel@tonic-gate lb.l_whence = 0; 93*0Sstevel@tonic-gate lb.l_start = 0; 94*0Sstevel@tonic-gate lb.l_len = 0; 95*0Sstevel@tonic-gate (void) fcntl(fileno(mpt), F_SETLKW, &lb); 96*0Sstevel@tonic-gate build_mnt_list(mpt); 97*0Sstevel@tonic-gate mtime = buf.st_mtime; 98*0Sstevel@tonic-gate /* 99*0Sstevel@tonic-gate * Lock goes away when we close the file. 100*0Sstevel@tonic-gate */ 101*0Sstevel@tonic-gate (void) fclose(mpt); 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate } 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate static void 108*0Sstevel@tonic-gate build_mnt_list(FILE *mpt) 109*0Sstevel@tonic-gate { 110*0Sstevel@tonic-gate mnt_t *item; 111*0Sstevel@tonic-gate mnt_t **which; 112*0Sstevel@tonic-gate mnt_t *tmp; 113*0Sstevel@tonic-gate int found; 114*0Sstevel@tonic-gate struct extmnttab mnt; 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate if (mpt) { 117*0Sstevel@tonic-gate while (nfs) { 118*0Sstevel@tonic-gate free(nfs->device_name); 119*0Sstevel@tonic-gate free(nfs->mount_point); 120*0Sstevel@tonic-gate free(nfs->devinfo); 121*0Sstevel@tonic-gate tmp = nfs; 122*0Sstevel@tonic-gate nfs = nfs->next; 123*0Sstevel@tonic-gate free(tmp); 124*0Sstevel@tonic-gate } 125*0Sstevel@tonic-gate while (ufs) { 126*0Sstevel@tonic-gate free(ufs->device_name); 127*0Sstevel@tonic-gate free(ufs->mount_point); 128*0Sstevel@tonic-gate free(ufs->devinfo); 129*0Sstevel@tonic-gate tmp = ufs; 130*0Sstevel@tonic-gate ufs = ufs->next; 131*0Sstevel@tonic-gate free(tmp); 132*0Sstevel@tonic-gate } 133*0Sstevel@tonic-gate (void) memset(&mnt, 0, sizeof (struct extmnttab)); 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate resetmnttab(mpt); 136*0Sstevel@tonic-gate while ((found = getextmntent(mpt, &mnt, 137*0Sstevel@tonic-gate sizeof (struct extmnttab))) != -1) { 138*0Sstevel@tonic-gate if (found == 0) { 139*0Sstevel@tonic-gate if (strcmp(mnt.mnt_fstype, MNTTYPE_UFS) == 0) 140*0Sstevel@tonic-gate which = &ufs; 141*0Sstevel@tonic-gate else if (strcmp(mnt.mnt_fstype, 142*0Sstevel@tonic-gate MNTTYPE_NFS) == 0) 143*0Sstevel@tonic-gate which = &nfs; 144*0Sstevel@tonic-gate else 145*0Sstevel@tonic-gate which = 0; 146*0Sstevel@tonic-gate if (which) { 147*0Sstevel@tonic-gate item = safe_alloc(sizeof (mnt_t)); 148*0Sstevel@tonic-gate item->device_name = 149*0Sstevel@tonic-gate safe_strdup(mnt.mnt_special); 150*0Sstevel@tonic-gate item->mount_point = 151*0Sstevel@tonic-gate safe_strdup(mnt.mnt_mountp); 152*0Sstevel@tonic-gate item->devinfo = 153*0Sstevel@tonic-gate safe_strdup(mnt.mnt_mntopts); 154*0Sstevel@tonic-gate item->minor = mnt.mnt_minor; 155*0Sstevel@tonic-gate item->next = *which; 156*0Sstevel@tonic-gate *which = item; 157*0Sstevel@tonic-gate } 158*0Sstevel@tonic-gate } 159*0Sstevel@tonic-gate } 160*0Sstevel@tonic-gate } 161*0Sstevel@tonic-gate } 162