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 32 struct 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 99 100 void getmntopts(const char *, const struct mntopt *, int *, int *); 101 void rmslashes(char *, char *); 102 int checkpath(const char *, char resolved_path[]); 103 int checkpath_allow_file(const char *, char resolved_path[]); 104 struct statfs *getmntpoint(const char *); 105 int chkdoreload(struct statfs *, void (*)(const char *, ...) __printflike(1,2)); 106 extern int getmnt_silent; 107 void build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, size_t len); 108 void build_iovec_argf(struct iovec **iov, int *iovlen, const char *name, const char *fmt, ...); 109 void free_iovec(struct iovec **iovec, int *iovlen); 110