1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1994
5 *      The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32struct mntopt {
33	const char *m_option;	/* option name */
34	int m_inverse;		/* if a negative option, e.g. "atime" */
35	long long m_flag;	/* bit to set, e.g. MNT_RDONLY */
36	int m_altloc;		/* 1 => set bit in altflags */
37};
38
39/* User-visible MNT_ flags. */
40#define MOPT_ASYNC		{ "async",	0, MNT_ASYNC, 0 }
41#define MOPT_NOATIME		{ "atime",	1, MNT_NOATIME, 0 }
42#define MOPT_NOEXEC		{ "exec",	1, MNT_NOEXEC, 0 }
43#define MOPT_NOSUID		{ "suid",	1, MNT_NOSUID, 0 }
44#define MOPT_NOSYMFOLLOW	{ "symfollow",  1, MNT_NOSYMFOLLOW, 0 }
45#define MOPT_RDONLY		{ "rdonly",	0, MNT_RDONLY, 0 }
46#define MOPT_SYNC		{ "sync",	0, MNT_SYNCHRONOUS, 0 }
47#define MOPT_UNION		{ "union",	0, MNT_UNION, 0 }
48#define MOPT_USERQUOTA		{ "userquota",	0, 0, 0 }
49#define MOPT_GROUPQUOTA		{ "groupquota",	0, 0, 0 }
50#define MOPT_NOCLUSTERR		{ "clusterr",	1, MNT_NOCLUSTERR, 0 }
51#define MOPT_NOCLUSTERW		{ "clusterw",	1, MNT_NOCLUSTERW, 0 }
52#define MOPT_SUIDDIR		{ "suiddir",	0, MNT_SUIDDIR, 0 }
53#define MOPT_SNAPSHOT		{ "snapshot",	0, MNT_SNAPSHOT, 0 }
54#define MOPT_MULTILABEL		{ "multilabel",	0, MNT_MULTILABEL, 0 }
55#define MOPT_ACLS		{ "acls",	0, MNT_ACLS, 0 }
56#define MOPT_NFS4ACLS		{ "nfsv4acls",	0, MNT_NFS4ACLS, 0 }
57#define MOPT_AUTOMOUNTED	{ "automounted",0, MNT_AUTOMOUNTED, 0 }
58#define MOPT_UNTRUSTED		{ "untrusted",  0, MNT_UNTRUSTED, 0 }
59
60/* Control flags. */
61#define MOPT_FORCE		{ "force",	0, MNT_FORCE, 0 }
62#define MOPT_UPDATE		{ "update",	0, MNT_UPDATE, 0 }
63#define MOPT_RO			{ "ro",		0, MNT_RDONLY, 0 }
64#define MOPT_RW			{ "rw",		1, MNT_RDONLY, 0 }
65#define	MOPT_NOCOVER		{ "cover",	1, MNT_NOCOVER, 0 }
66#define	MOPT_EMPTYDIR		{ "emptydir",	0, MNT_EMPTYDIR, 0 }
67/* This is parsed by mount(8), but is ignored by specific mount_*(8)s. */
68#define MOPT_AUTO		{ "auto",	0, 0, 0 }
69
70/* A handy macro as terminator of MNT_ array. */
71#define MOPT_END		{ NULL,		0, 0, 0 }
72
73#define MOPT_FSTAB_COMPAT						\
74	MOPT_RO,							\
75	MOPT_RW,							\
76	MOPT_AUTO
77
78/* Standard options which all mounts can understand. */
79#define MOPT_STDOPTS							\
80	MOPT_USERQUOTA,							\
81	MOPT_GROUPQUOTA,						\
82	MOPT_FSTAB_COMPAT,						\
83	MOPT_NOATIME,							\
84	MOPT_NOEXEC,							\
85	MOPT_SUIDDIR,		/* must be before MOPT_NOSUID */	\
86	MOPT_NOSUID,							\
87	MOPT_NOSYMFOLLOW,						\
88	MOPT_RDONLY,							\
89	MOPT_UNION,							\
90	MOPT_NOCLUSTERR,						\
91	MOPT_NOCLUSTERW,						\
92	MOPT_MULTILABEL,						\
93	MOPT_ACLS,							\
94	MOPT_NFS4ACLS,							\
95	MOPT_AUTOMOUNTED,						\
96	MOPT_UNTRUSTED,							\
97	MOPT_NOCOVER,							\
98	MOPT_EMPTYDIR
99
100void getmntopts(const char *, const struct mntopt *, int *, int *);
101void rmslashes(char *, char *);
102int checkpath(const char *, char resolved_path[]);
103int checkpath_allow_file(const char *, char resolved_path[]);
104struct statfs *getmntpoint(const char *);
105int chkdoreload(struct statfs *, void (*)(const char *, ...) __printflike(1,2));
106extern int getmnt_silent;
107void build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, size_t len);
108void build_iovec_argf(struct iovec **iov, int *iovlen, const char *name, const char *fmt, ...);
109void free_iovec(struct iovec **iovec, int *iovlen);
110