external/bsd/am-utils/dist/conf/checkmount/checkmount_aix.c

   1 /*      $NetBSD$        */
   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_aix.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
  52 /*
  53  * These were missing external definitions from old AIX's headers.  They
  54  * appear to be available in <sys/vmount.h> on AIX 5.3, and possibly
  55  * earlier. Hence I commented this out.
  56  */
  57 #ifndef HAVE_EXTERN_MNTCTL
  58 extern int mntctl(int cmd, int size, voidp buf);
  59 #endif /* not HAVE_EXTERN_MNTCTL */
  60 extern int is_same_host(char *name1, char *name2, struct in_addr addr2);
  61
  62
  63 int
  64 fixmount_check_mount(char *host, struct in_addr hostaddr, char *path)
  65 {
  66   int ret, i;
  67   char *mntinfo = NULL, *cp;
  68   char *short_hostname, *long_hostname, *mount_point;
  69   struct vmount *vp;
  70
  71   /*
  72    * First figure out size of mount table and allocate space for a copy...
  73    * Then get mount table for real.
  74    */
  75   ret = mntctl(MCTL_QUERY, sizeof(i), (char *) &i);
  76   if (ret == 0) {
  77     mntinfo = xmalloc(i);
  78     ret = mntctl(MCTL_QUERY, i, mntinfo);
  79   }
  80   if (ret <= 0) {
  81     fprintf(stderr, "mntctl: %m");
  82     XFREE(mntinfo);
  83     exit(1);
  84   }
  85
  86   /* iterate over each vmount structure */
  87   for (i = 0, cp = mntinfo; i < ret; i++, cp += vp->vmt_length) {
  88     vp = (struct vmount *) cp;
  89     mount_point = vmt2dataptr(vp, VMT_STUB);
  90     long_hostname = vmt2dataptr(vp, VMT_HOSTNAME);
  91     short_hostname = vmt2dataptr(vp, VMT_HOST);
  92     if (STREQ(path, mount_point) &&
  93         (is_same_host(long_hostname, host, hostaddr) ||
  94          is_same_host(short_hostname, host, hostaddr)))
  95       return 1;
  96   }
  97
  98   return 0;
  99 }