1 /* $NetBSD: checkmount_svr4.c,v 1.1.1.3 2015/01/17 16:34:16 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2014 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. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * 38 * File: am-utils/conf/checkmount/checkmount_svr4.c 39 * 40 */ 41 42 #ifdef HAVE_CONFIG_H 43 # include <config.h> 44 #endif /* HAVE_CONFIG_H */ 45 #include <am_defs.h> 46 47 extern int is_same_host(char *name1, char *name2, struct in_addr addr2); 48 49 50 int 51 fixmount_check_mount(char *host, struct in_addr hostaddr, char *path) 52 { 53 FILE *mtab; 54 struct mnttab ment; 55 int err = 0; 56 int found = 0; 57 58 /* scan mtab for path */ 59 if (!(mtab = fopen(MNTTAB, "r"))) { 60 perror(MNTTAB); 61 exit(1); 62 } 63 64 while (!found && (err = getmntent(mtab, &ment)) == 0) { 65 char *colon; 66 67 if ((colon = strchr(ment.mnt_fsname, ':'))) { 68 *colon = '\0'; 69 if ((STREQ(colon + 1, path) || 70 STREQ(ment.mnt_dir, path)) && 71 is_same_host(ment.mnt_fsname, host, hostaddr)) 72 found = 1; 73 } 74 } 75 76 if (err > 0) { 77 fprintf(stderr, "getmntent: %s: %s\n", MNTTAB, 78 err == MNT_TOOLONG ? "entry exceeds MNT_LINE_MAX" : 79 err == MNT_TOOMANY ? "too many fields in line" : 80 err == MNT_TOOFEW ? "too few fields in line" : 81 "unknown error code"); 82 exit(1); 83 } 84 (void) fclose(mtab); 85 86 /* XXX: Is this still valid in SunOS 5.x ? */ 87 if (!found) { 88 char *swap; 89 90 /* swap files never show up in mtab, only root fs */ 91 if ((swap = strstr(path, "swap"))) { 92 strncpy(swap, "root", 4); /* this should NOT use xstrlcpy */ 93 found = fixmount_check_mount(host, hostaddr, path); 94 strncpy(swap, "swap", 4); /* this should NOT use xstrlcpy */ 95 } 96 } 97 return found; 98 } 99