168 lines
4.5 KiB
C
168 lines
4.5 KiB
C
/* $NetBSD: mtab_aix.c,v 1.1.1.1 2000/06/07 00:52:20 dogcow Exp $ */
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/*
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* Copyright (c) 1997-2000 Erez Zadok
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* Copyright (c) 1990 Jan-Simon Pendry
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* %W% (Berkeley) %G%
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*
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* Id: mtab_aix.c,v 1.5 2000/01/12 16:44:42 ezk Exp
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*
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*/
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/*
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* AIX systems don't write their mount tables on a file. Instead, they
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* use a (better) system where the kernel keeps this state, and you access
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* the mount tables via a known interface.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <amu.h>
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/* missing external definitions from AIX's headers */
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extern int mntctl(int cmd, int size, voidp buf);
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static mntent_t *
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mnt_dup(struct vmount *mp)
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{
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mntent_t *new_mp = ALLOC(mntent_t);
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char *ty;
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char *fsname = strdup(vmt2dataptr(mp, VMT_OBJECT));
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new_mp->mnt_dir = strdup(vmt2dataptr(mp, VMT_STUB));
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new_mp->mnt_opts = strdup(vmt2dataptr(mp, VMT_ARGS));
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switch (mp->vmt_gfstype) {
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case MOUNT_TYPE_UFS:
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ty = MNTTAB_TYPE_UFS;
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new_mp->mnt_fsname = strdup(fsname);
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break;
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case MOUNT_TYPE_NFS:
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ty = MNTTAB_TYPE_NFS;
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new_mp->mnt_fsname = str3cat((char *) 0,
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vmt2dataptr(mp, VMT_HOSTNAME), ":",
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fsname);
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break;
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#ifdef HAVE_FS_NFS3
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case MOUNT_TYPE_NFS3:
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ty = MNTTAB_TYPE_NFS3;
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new_mp->mnt_fsname = str3cat((char *) 0,
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vmt2dataptr(mp, VMT_HOSTNAME), ":",
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fsname);
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break;
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#endif /* HAVE_FS_NFS3 */
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default:
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ty = "unknown";
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new_mp->mnt_fsname = strdup(fsname);
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break;
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}
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new_mp->mnt_type = strdup(ty);
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/* store the VFS ID for uvmount() */
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new_mp->mnt_passno = mp->vmt_vfsnumber;
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new_mp->mnt_freq = 0;
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XFREE(fsname);
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return new_mp;
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}
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/*
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* Read a mount table into memory
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*/
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mntlist *
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read_mtab(char *fs, const char *mnttabname)
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{
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mntlist **mpp, *mhp;
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int i;
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char *mntinfo = 0, *cp;
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struct vmount *vp;
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int ret;
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/*
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* First figure out size of mount table
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* and allocate space for a copy...
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* Then get mount table for real.
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*/
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ret = mntctl(MCTL_QUERY, sizeof(i), &i);
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if (ret == 0) {
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mntinfo = xmalloc(i);
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ret = mntctl(MCTL_QUERY, i, mntinfo);
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}
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if (ret <= 0) {
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plog(XLOG_ERROR, "mntctl: %m");
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goto out;
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}
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mpp = &mhp;
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for (i = 0, cp = mntinfo; i < ret; i++, cp += vp->vmt_length) {
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vp = (struct vmount *) cp;
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/*
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* Allocate a new slot
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*/
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*mpp = ALLOC(struct mntlist);
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/*
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* Copy the data returned by mntctl
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*/
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(*mpp)->mnt = mnt_dup(vp);
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/*
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* Move to next pointer
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*/
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mpp = &(*mpp)->mnext;
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}
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*mpp = 0;
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out:
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if (mntinfo)
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XFREE(mntinfo);
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return mhp;
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}
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