2 * Copyright (c) 2004-09 The DragonFly Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
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17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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31 * OF THE POSSIBILITY OF SUCH DAMAGE.
36 * $Id: mount.c,v 1.4 2005/02/10 03:33:49 cpressey Exp $
40 #include <sys/param.h>
41 #include <sys/ucred.h>
42 #include <sys/mount.h>
50 #include "libaura/fspred.h"
53 #include "functions.h"
56 compare(const void *a
, const void *b
)
58 const struct statfs
*sa
= a
;
59 const struct statfs
*sb
= b
;
61 return -strcmp(sa
->f_mntonname
,
66 * Unmount all mountpoints under a given mountpoint in order (e.g. /var/tmp is
67 * unmounted before /var).
70 unmount_all_under(struct i_fn_args
*a
, struct commands
*cmds
, const char *fmt
, ...)
72 struct statfs
*mt_array
;
78 vasprintf(&mtpt
, fmt
, args
);
81 count
= getmntinfo(&mt_array
, MNT_WAIT
);
83 /* Order mount points in reverse lexicographically order. */
84 qsort((void*)mt_array
, count
, sizeof(struct statfs
), compare
);
86 for (i
= 0; i
< count
; i
++) {
87 if (strncmp(mtpt
, mt_array
[i
].f_mntonname
, strlen(mtpt
)) != 0)
89 if (strlen(mtpt
) > strlen(mt_array
[i
].f_mntonname
))
92 command_add(cmds
, "%s%s %s",
93 a
->os_root
, cmd_name(a
, "UMOUNT"), mt_array
[i
].f_mntonname
);