NetBSD/usr.sbin/amd/libamu/mtabutil.c

148 lines
4.2 KiB
C

/* $NetBSD: mtabutil.c,v 1.1.1.4 1998/08/08 22:05:25 christos Exp $ */
/*
* Copyright (c) 1997-1998 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 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.
*
* %W% (Berkeley) %G%
*
* Id: mtab_bsd.c,v 5.2.2.2 1992/11/12 23:29:14 jsp Exp
*
*/
/*
* BSD 4.4 systems don't write their mount tables on a file. Instead, they
* use a (better) system where the kernel keeps this state, and you access
* the mount tables via a known interface.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amu.h>
static mntent_t *
mnt_dup(struct statfs *mp)
{
mntent_t *new_mp = ALLOC(mntent_t);
char *ty;
new_mp->mnt_fsname = strdup(mp->f_mntfromname);
new_mp->mnt_dir = strdup(mp->f_mntonname);
#ifdef HAVE_FIELD_STRUCT_STATFS_F_FSTYPENAME
ty = mp->f_fstypename;
#else /* not HAVE_FIELD_STRUCT_STATFS_F_FSTYPENAME */
switch (mp->f_type) {
# if defined(MOUNT_UFS) && defined(MNTTAB_TYPE_UFS)
case MOUNT_UFS:
ty = MNTTAB_TYPE_UFS;
break;
# endif /* defined(MOUNT_UFS) && defined(MNTTAB_TYPE_UFS) */
# if defined(MOUNT_NFS) && defined(MNTTAB_TYPE_NFS)
case MOUNT_NFS:
ty = MNTTAB_TYPE_NFS;
break;
# endif /* defined(MOUNT_NFS) && defined(MNTTAB_TYPE_NFS) */
# if defined(MOUNT_MFS) && defined(MNTTAB_TYPE_MFS)
case MOUNT_MFS:
ty = MNTTAB_TYPE_MFS;
break;
# endif /* defined(MOUNT_MFS) && defined(MNTTAB_TYPE_MFS) */
default:
ty = "unknown";
break;
}
#endif /* not HAVE_FIELD_STRUCT_STATFS_F_FSTYPENAME */
new_mp->mnt_type = strdup(ty);
new_mp->mnt_opts = strdup("unset");
new_mp->mnt_freq = 0;
new_mp->mnt_passno = 0;
return new_mp;
}
/*
* Read a mount table into memory
*/
mntlist *
read_mtab(char *fs, const char *mnttabname)
{
mntlist **mpp, *mhp;
struct statfs *mntbufp, *mntp;
int nloc = getmntinfo(&mntbufp, MNT_NOWAIT);
if (nloc == 0) {
plog(XLOG_ERROR, "Can't read mount table");
return 0;
}
mpp = &mhp;
for (mntp = mntbufp; mntp < mntbufp + nloc; mntp++) {
/*
* Allocate a new slot
*/
*mpp = ALLOC(struct mntlist);
/*
* Copy the data returned by getmntent
*/
(*mpp)->mnt = mnt_dup(mntp);
/*
* Move to next pointer
*/
mpp = &(*mpp)->mnext;
}
/*
* Terminate the list
*/
*mpp = 0;
return mhp;
}