1/*	$NetBSD: checkmount_aix.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_aix.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
48/*
49 * These were missing external definitions from old AIX's headers.  They
50 * appear to be available in <sys/vmount.h> on AIX 5.3, and possibly
51 * earlier. Hence I commented this out.
52 */
53#ifndef HAVE_EXTERN_MNTCTL
54extern int mntctl(int cmd, int size, voidp buf);
55#endif /* not HAVE_EXTERN_MNTCTL */
56extern int is_same_host(char *name1, char *name2, struct in_addr addr2);
57
58
59int
60fixmount_check_mount(char *host, struct in_addr hostaddr, char *path)
61{
62  int ret, i;
63  char *mntinfo = NULL, *cp;
64  char *short_hostname, *long_hostname, *mount_point;
65  struct vmount *vp;
66
67  /*
68   * First figure out size of mount table and allocate space for a copy...
69   * Then get mount table for real.
70   */
71  ret = mntctl(MCTL_QUERY, sizeof(i), (char *) &i);
72  if (ret == 0) {
73    mntinfo = xmalloc(i);
74    ret = mntctl(MCTL_QUERY, i, mntinfo);
75  }
76  if (ret <= 0) {
77    fprintf(stderr, "mntctl: %m");
78    XFREE(mntinfo);
79    exit(1);
80  }
81
82  /* iterate over each vmount structure */
83  for (i = 0, cp = mntinfo; i < ret; i++, cp += vp->vmt_length) {
84    vp = (struct vmount *) cp;
85    mount_point = vmt2dataptr(vp, VMT_STUB);
86    long_hostname = vmt2dataptr(vp, VMT_HOSTNAME);
87    short_hostname = vmt2dataptr(vp, VMT_HOST);
88    if (STREQ(path, mount_point) &&
89	(is_same_host(long_hostname, host, hostaddr) ||
90	 is_same_host(short_hostname, host, hostaddr)))
91      return 1;
92  }
93
94  return 0;
95}
96