1 /* $NetBSD: checkmount_svr4.c,v 1.1.1.2 2009/03/20 20:26:50 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2009 Erez Zadok 5 * Copyright (c) 1990 Jan-Simon Pendry 6 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 7 * Copyright (c) 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Jan-Simon Pendry at Imperial College, London. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgment: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * 42 * File: am-utils/conf/checkmount/checkmount_svr4.c 43 * 44 */ 45 46 #ifdef HAVE_CONFIG_H 47 # include <config.h> 48 #endif /* HAVE_CONFIG_H */ 49 #include <am_defs.h> 50 51 extern int is_same_host(char *name1, char *name2, struct in_addr addr2); 52 53 54 int 55 fixmount_check_mount(char *host, struct in_addr hostaddr, char *path) 56 { 57 FILE *mtab; 58 struct mnttab ment; 59 int err = 0; 60 int found = 0; 61 62 /* scan mtab for path */ 63 if (!(mtab = fopen(MNTTAB, "r"))) { 64 perror(MNTTAB); 65 exit(1); 66 } 67 68 while (!found && (err = getmntent(mtab, &ment)) == 0) { 69 char *colon; 70 71 if ((colon = strchr(ment.mnt_fsname, ':'))) { 72 *colon = '\0'; 73 if ((STREQ(colon + 1, path) || 74 STREQ(ment.mnt_dir, path)) && 75 is_same_host(ment.mnt_fsname, host, hostaddr)) 76 found = 1; 77 } 78 } 79 80 if (err > 0) { 81 fprintf(stderr, "getmntent: %s: %s\n", MNTTAB, 82 err == MNT_TOOLONG ? "entry exceeds MNT_LINE_MAX" : 83 err == MNT_TOOMANY ? "too many fields in line" : 84 err == MNT_TOOFEW ? "too few fields in line" : 85 "unknown error code"); 86 exit(1); 87 } 88 (void) fclose(mtab); 89 90 /* XXX: Is this still valid in SunOS 5.x ? */ 91 if (!found) { 92 char *swap; 93 94 /* swap files never show up in mtab, only root fs */ 95 if ((swap = strstr(path, "swap"))) { 96 strncpy(swap, "root", 4); /* this should NOT use xstrlcpy */ 97 found = fixmount_check_mount(host, hostaddr, path); 98 strncpy(swap, "swap", 4); /* this should NOT use xstrlcpy */ 99 } 100 } 101 return found; 102 } 103