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/*
* 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.
*
* @(#)umount_fs.c 8.1 (Berkeley) 6/6/93
*
* $FreeBSD$
*
*/
#include "am.h"
#ifdef NEED_UMOUNT_BSD
int umount_fs P((char *fs_name));
int umount_fs(fs_name)
char *fs_name;
{
int error;
eintr:
error = unmount(fs_name, 0);
if (error < 0)
error = errno;
switch (error) {
case EINVAL:
case ENOTBLK:
case ENOENT:
plog(XLOG_WARNING, "unmount: %s is not mounted", fs_name);
error = 0; /* Not really an error */
break;
case EINTR:
#ifdef DEBUG
/* not sure why this happens, but it does. ask kirk one day... */
dlog("%s: unmount: %m", fs_name);
#endif /* DEBUG */
goto eintr;
#ifdef DEBUG
default:
dlog("%s: unmount: %m", fs_name);
break;
#endif /* DEBUG */
}
return error;
}
#endif /* NEED_UMOUNT_BSD */
#ifdef NEED_UMOUNT_OSF
#include <sys/mount.h> /* For MNT_NOFORCE */
int umount_fs(fs_name)
char *fs_name;
{
int error;
eintr:
error = umount(fs_name, MNT_NOFORCE);
if (error < 0)
error = errno;
switch (error) {
case EINVAL:
case ENOTBLK:
plog(XLOG_WARNING, "unmount: %s is not mounted", fs_name);
error = 0; /* Not really an error */
break;
case ENOENT:
plog(XLOG_ERROR, "mount point %s: %m", fs_name);
break;
case EINTR:
#ifdef DEBUG
/* not sure why this happens, but it does. ask kirk one day... */
dlog("%s: unmount: %m", fs_name);
#endif /* DEBUG */
goto eintr;
#ifdef DEBUG
default:
dlog("%s: unmount: %m", fs_name);
break;
#endif /* DEBUG */
}
return error;
}
#endif /* NEED_UMOUNT_OSF */
#ifdef NEED_UMOUNT_FS
int umount_fs(fs_name)
char *fs_name;
{
mntlist *mlist, *mp, *mp_save = 0;
int error = 0;
mp = mlist = read_mtab(fs_name);
/*
* Search the mount table looking for
* the correct (ie last) matching entry
*/
while (mp) {
if (strcmp(mp->mnt->mnt_fsname, fs_name) == 0 ||
strcmp(mp->mnt->mnt_dir, fs_name) == 0)
mp_save = mp;
mp = mp->mnext;
}
if (mp_save) {
#ifdef DEBUG
dlog("Trying unmount(%s)", mp_save->mnt->mnt_dir);
#endif /* DEBUG */
/*
* This unmount may hang leaving this
* process with an exlusive lock on
* /etc/mtab. Therefore it is necessary
* to unlock mtab, do the unmount, then
* lock mtab (again) and reread it and
* finally update it.
*/
unlock_mntlist();
if (UNMOUNT_TRAP(mp_save->mnt) < 0) {
switch (error = errno) {
case EINVAL:
case ENOTBLK:
plog(XLOG_WARNING, "unmount: %s is not mounted", mp_save->mnt->mnt_dir);
error = 0; /* Not really an error */
break;
case ENOENT:
plog(XLOG_ERROR, "mount point %s: %m", mp_save->mnt->mnt_dir);
break;
default:
#ifdef DEBUG
dlog("%s: unmount: %m", mp_save->mnt->mnt_dir);
#endif /* DEBUG */
break;
}
}
#ifdef DEBUG
dlog("Finished unmount(%s)", mp_save->mnt->mnt_dir);
#endif
#ifdef UPDATE_MTAB
if (!error) {
free_mntlist(mlist);
mp = mlist = read_mtab(fs_name);
/*
* Search the mount table looking for
* the correct (ie last) matching entry
*/
mp_save = 0;
while (mp) {
if (strcmp(mp->mnt->mnt_fsname, fs_name) == 0 ||
strcmp(mp->mnt->mnt_dir, fs_name) == 0)
mp_save = mp;
mp = mp->mnext;
}
if (mp_save) {
mnt_free(mp_save->mnt);
mp_save->mnt = 0;
rewrite_mtab(mlist);
}
}
#endif /* UPDATE_MTAB */
} else {
plog(XLOG_ERROR, "Couldn't find how to unmount %s", fs_name);
/*
* Assume it is already unmounted
*/
error = 0;
}
free_mntlist(mlist);
return error;
}
#endif /* NEED_UMOUNT_FS */
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