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is to notify the kernel that the file system is untrusted and it should use more extensive checks on the file-system's metadata before using it. This option is intended to be used when mounting file systems from untrusted media such as USB memory sticks or other externally-provided media. It will initially be used by the UFS/FFS file system, but should likely be expanded to be used by other file systems that may appear on external media like msdosfs, exfat, and ext2fs. Reviewed by: kib Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20786
107 lines
4.3 KiB
C
107 lines
4.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)mntopts.h 8.7 (Berkeley) 3/29/95
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* $FreeBSD$
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*/
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struct mntopt {
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const char *m_option; /* option name */
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int m_inverse; /* if a negative option, e.g. "atime" */
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long long m_flag; /* bit to set, e.g. MNT_RDONLY */
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int m_altloc; /* 1 => set bit in altflags */
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};
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/* User-visible MNT_ flags. */
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#define MOPT_ASYNC { "async", 0, MNT_ASYNC, 0 }
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#define MOPT_NOATIME { "atime", 1, MNT_NOATIME, 0 }
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#define MOPT_NOEXEC { "exec", 1, MNT_NOEXEC, 0 }
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#define MOPT_NOSUID { "suid", 1, MNT_NOSUID, 0 }
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#define MOPT_NOSYMFOLLOW { "symfollow", 1, MNT_NOSYMFOLLOW, 0 }
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#define MOPT_RDONLY { "rdonly", 0, MNT_RDONLY, 0 }
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#define MOPT_SYNC { "sync", 0, MNT_SYNCHRONOUS, 0 }
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#define MOPT_UNION { "union", 0, MNT_UNION, 0 }
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#define MOPT_USERQUOTA { "userquota", 0, 0, 0 }
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#define MOPT_GROUPQUOTA { "groupquota", 0, 0, 0 }
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#define MOPT_NOCLUSTERR { "clusterr", 1, MNT_NOCLUSTERR, 0 }
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#define MOPT_NOCLUSTERW { "clusterw", 1, MNT_NOCLUSTERW, 0 }
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#define MOPT_SUIDDIR { "suiddir", 0, MNT_SUIDDIR, 0 }
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#define MOPT_SNAPSHOT { "snapshot", 0, MNT_SNAPSHOT, 0 }
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#define MOPT_MULTILABEL { "multilabel", 0, MNT_MULTILABEL, 0 }
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#define MOPT_ACLS { "acls", 0, MNT_ACLS, 0 }
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#define MOPT_NFS4ACLS { "nfsv4acls", 0, MNT_NFS4ACLS, 0 }
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#define MOPT_AUTOMOUNTED { "automounted",0, MNT_AUTOMOUNTED, 0 }
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#define MOPT_UNTRUSTED { "untrusted", 0, MNT_UNTRUSTED, 0 }
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/* Control flags. */
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#define MOPT_FORCE { "force", 0, MNT_FORCE, 0 }
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#define MOPT_UPDATE { "update", 0, MNT_UPDATE, 0 }
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#define MOPT_RO { "ro", 0, MNT_RDONLY, 0 }
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#define MOPT_RW { "rw", 1, MNT_RDONLY, 0 }
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/* This is parsed by mount(8), but is ignored by specific mount_*(8)s. */
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#define MOPT_AUTO { "auto", 0, 0, 0 }
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/* A handy macro as terminator of MNT_ array. */
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#define MOPT_END { NULL, 0, 0, 0 }
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#define MOPT_FSTAB_COMPAT \
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MOPT_RO, \
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MOPT_RW, \
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MOPT_AUTO
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/* Standard options which all mounts can understand. */
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#define MOPT_STDOPTS \
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MOPT_USERQUOTA, \
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MOPT_GROUPQUOTA, \
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MOPT_FSTAB_COMPAT, \
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MOPT_NOATIME, \
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MOPT_NOEXEC, \
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MOPT_SUIDDIR, /* must be before MOPT_NOSUID */ \
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MOPT_NOSUID, \
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MOPT_NOSYMFOLLOW, \
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MOPT_RDONLY, \
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MOPT_UNION, \
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MOPT_NOCLUSTERR, \
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MOPT_NOCLUSTERW, \
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MOPT_MULTILABEL, \
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MOPT_ACLS, \
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MOPT_NFS4ACLS, \
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MOPT_AUTOMOUNTED, \
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MOPT_UNTRUSTED
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void getmntopts(const char *, const struct mntopt *, int *, int *);
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void rmslashes(char *, char *);
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int checkpath(const char *, char resolved_path[]);
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extern int getmnt_silent;
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void build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, size_t len);
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void build_iovec_argf(struct iovec **iov, int *iovlen, const char *name, const char *fmt, ...);
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void free_iovec(struct iovec **iovec, int *iovlen);
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