BSD 4_4 release

[unix-history] / usr / src / usr.sbin / amd / config / mtab_aix.c

/*
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)mtab_aix.c  8.1 (Berkeley) 6/6/93
*
* $Id: mtab_aix.c,v 5.2.2.1 1992/02/09 15:10:07 jsp beta $
*
*/

#include "am.h"

#ifdef READ_MTAB_AIX3_STYLE

#include <sys/mntctl.h>
#include <sys/vmount.h>

static struct mntent *mnt_dup(mp)
struct vmount *mp;
{
       struct mntent *new_mp = ALLOC(mntent);

       char *ty;
       new_mp->mnt_fsname = strdup(vmt2dataptr(mp, VMT_OBJECT));
       new_mp->mnt_dir = strdup(vmt2dataptr(mp, VMT_STUB));
       new_mp->mnt_opts = strdup(vmt2dataptr(mp, VMT_ARGS));
       switch (mp->vmt_gfstype) {
       case MNT_JFS:  ty = MTAB_TYPE_UFS; break;
       case MNT_NFS:
               ty = MTAB_TYPE_NFS;
               new_mp->mnt_fsname = str3cat(new_mp->mnt_fsname,
                               vmt2dataptr(mp, VMT_HOSTNAME),
                               ":", new_mp->mnt_fsname);
               break;
       default:  ty = "unknown"; break;
       }
       new_mp->mnt_type = strdup(ty);
       new_mp->mnt_passno = mp->vmt_vfsnumber;
       new_mp->mnt_freq = 0;

       return new_mp;
}

/*
* Read a mount table into memory
*/
mntlist *read_mtab(fs)
char *fs;
{
       mntlist **mpp, *mhp;

       int i;
       char *mntinfo = 0, *cp;
       struct vmount *vp;
       int ret;

       /*
        * First figure out size of mount table
        * and allocate space for a copy...
        * Then get mount table for real.
        */
       ret = mntctl(MCTL_QUERY, sizeof(i), &i);
       if (ret == 0) {
               mntinfo = xmalloc(i);
               ret = mntctl(MCTL_QUERY, i, mntinfo);
       }

       if (ret <= 0) {
               plog(XLOG_ERROR, "mntctl: %m");
               goto out;
       }
#ifdef DEBUG
       /*dlog("mntctl returns %d structures", ret);*/
#endif /* DEBUG */

       mpp = &mhp;
       for (i = 0, cp = mntinfo; i < ret; i++, cp += vp->vmt_length) {
               vp = (struct vmount *) cp;

               /*
                * Allocate a new slot
                */
               *mpp = ALLOC(mntlist);

               /*
                * Copy the data returned by mntctl
                */
               (*mpp)->mnt = mnt_dup(vp);

               /*
                * Move to next pointer
                */
               mpp = &(*mpp)->mnext;
       }

       *mpp = 0;

out:
       if (mntinfo)
               free(mntinfo);
       return mhp;
}

#endif /* READ_MTAB_AIX3_STYLE */