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
fixmount_check_mount(char * host,struct in_addr hostaddr,char * path)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