| 1 | /*
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| 2 | * Copyright (c) 1989, 1991, 1993
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. All advertising materials mentioning features or use of this software
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| 14 | * must display the following acknowledgement:
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| 15 | * This product includes software developed by the University of
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| 16 | * California, Berkeley and its contributors.
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| 17 | * 4. Neither the name of the University nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | *
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| 33 | * @(#)mount.h 8.21 (Berkeley) 5/20/95
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| 34 | * $FreeBSD: src/sys/sys/mount.h,v 1.147 2003/03/26 22:15:58 tegge Exp $
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| 35 | */
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| 36 |
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| 37 | /** @file
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| 38 | * FreeBSD 5.1
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| 39 | *
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| 40 | * @changed bird: Disabled stuff we don't have or don't wanna support (yet).
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| 41 | */
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| 42 |
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| 43 | #ifndef _SYS_MOUNT_H_
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| 44 | #define _SYS_MOUNT_H_
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| 45 |
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| 46 | #if 0 /* bird: we don't have/need this. */
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| 47 | #include <sys/ucred.h>
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| 48 | #endif /* bird */
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| 49 | #include <sys/queue.h>
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| 50 | #ifdef _KERNEL
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| 51 | #include <sys/lockmgr.h>
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| 52 | #include <sys/_label.h>
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| 53 | #include <sys/_lock.h>
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| 54 | #include <sys/_mutex.h>
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| 55 | #endif
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| 56 |
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| 57 | typedef struct fsid { int32_t val[2]; } fsid_t; /* filesystem id type */
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| 58 |
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| 59 | /*
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| 60 | * File identifier.
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| 61 | * These are unique per filesystem on a single machine.
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| 62 | */
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| 63 | #define MAXFIDSZ 16
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| 64 |
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| 65 | struct fid {
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| 66 | u_short fid_len; /* length of data in bytes */
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| 67 | u_short fid_reserved; /* force longword alignment */
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| 68 | char fid_data[MAXFIDSZ]; /* data (variable length) */
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| 69 | };
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| 70 |
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| 71 | /*
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| 72 | * filesystem statistics
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| 73 | */
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| 74 |
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| 75 | #define MFSNAMELEN 16 /* length of fs type name, including null */
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| 76 | #define MNAMELEN (88 - 2 * sizeof(long)) /* size of on/from name bufs */
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| 77 |
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| 78 | /* XXX getfsstat.2 is out of date with write and read counter changes here. */
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| 79 | /* XXX statfs.2 is out of date with read counter changes here. */
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| 80 | struct statfs {
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| 81 | long f_spare2; /* placeholder */
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| 82 | long f_bsize; /* fundamental filesystem block size */
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| 83 | long f_iosize; /* optimal transfer block size */
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| 84 | long f_blocks; /* total data blocks in filesystem */
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| 85 | long f_bfree; /* free blocks in fs */
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| 86 | long f_bavail; /* free blocks avail to non-superuser */
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| 87 | long f_files; /* total file nodes in filesystem */
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| 88 | long f_ffree; /* free file nodes in fs */
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| 89 | fsid_t f_fsid; /* filesystem id */
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| 90 | uid_t f_owner; /* user that mounted the filesystem */
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| 91 | int f_type; /* type of filesystem */
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| 92 | int f_flags; /* copy of mount exported flags */
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| 93 | long f_syncwrites; /* count of sync writes since mount */
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| 94 | long f_asyncwrites; /* count of async writes since mount */
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| 95 | char f_fstypename[MFSNAMELEN]; /* fs type name */
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| 96 | char f_mntonname[MNAMELEN]; /* directory on which mounted */
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| 97 | long f_syncreads; /* count of sync reads since mount */
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| 98 | long f_asyncreads; /* count of async reads since mount */
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| 99 | short f_spares1; /* unused spare */
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| 100 | char f_mntfromname[MNAMELEN];/* mounted filesystem */
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| 101 | short f_spares2; /* unused spare */
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| 102 | /*
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| 103 | * XXX on machines where longs are aligned to 8-byte boundaries, there
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| 104 | * is an unnamed int32_t here. This spare was after the apparent end
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| 105 | * of the struct until we bit off the read counters from f_mntonname.
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| 106 | */
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| 107 | long f_spare[2]; /* unused spare */
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| 108 | };
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| 109 |
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| 110 | #ifdef _KERNEL
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| 111 | #define MMAXOPTIONLEN 65536 /* maximum length of a mount option */
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| 112 |
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| 113 | TAILQ_HEAD(vnodelst, vnode);
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| 114 | TAILQ_HEAD(vfsoptlist, vfsopt);
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| 115 | struct vfsopt {
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| 116 | TAILQ_ENTRY(vfsopt) link;
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| 117 | char *name;
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| 118 | void *value;
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| 119 | int len;
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| 120 | };
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| 121 |
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| 122 | /*
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| 123 | * Structure per mounted filesystem. Each mounted filesystem has an
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| 124 | * array of operations and an instance record. The filesystems are
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| 125 | * put on a doubly linked list.
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| 126 | *
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| 127 | * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
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| 128 | * are linked into mnt_nvnodelist. At some point in the near future the
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| 129 | * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
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| 130 | * will become the dirty list and mnt_reservedvnlist will become the 'clean'
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| 131 | * list. Filesystem kld's syncing code should remain compatible since
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| 132 | * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
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| 133 | */
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| 134 | struct mount {
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| 135 | TAILQ_ENTRY(mount) mnt_list; /* mount list */
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| 136 | struct vfsops *mnt_op; /* operations on fs */
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| 137 | struct vfsconf *mnt_vfc; /* configuration info */
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| 138 | struct vnode *mnt_vnodecovered; /* vnode we mounted on */
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| 139 | struct vnode *mnt_syncer; /* syncer vnode */
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| 140 | struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
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| 141 | struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
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| 142 | struct lock mnt_lock; /* mount structure lock */
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| 143 | int mnt_writeopcount; /* write syscalls in progress */
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| 144 | int mnt_flag; /* flags shared with user */
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| 145 | struct vfsoptlist *mnt_opt; /* current mount options */
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| 146 | struct vfsoptlist *mnt_optnew; /* new options passed to fs */
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| 147 | int mnt_kern_flag; /* kernel only flags */
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| 148 | int mnt_maxsymlinklen; /* max size of short symlink */
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| 149 | struct statfs mnt_stat; /* cache of filesystem stats */
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| 150 | struct ucred *mnt_cred; /* credentials of mounter */
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| 151 | qaddr_t mnt_data; /* private data */
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| 152 | time_t mnt_time; /* last time written*/
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| 153 | int mnt_iosize_max; /* max size for clusters, etc */
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| 154 | struct netexport *mnt_export; /* export list */
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| 155 | struct label mnt_mntlabel; /* MAC label for the mount */
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| 156 | struct label mnt_fslabel; /* MAC label for the fs */
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| 157 | int mnt_nvnodelistsize; /* # of vnodes on this mount */
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| 158 | };
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| 159 | #endif /* _KERNEL */
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| 160 |
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| 161 | /*
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| 162 | * User specifiable flags.
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| 163 | */
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| 164 | #define MNT_RDONLY 0x00000001 /* read only filesystem */
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| 165 | #define MNT_SYNCHRONOUS 0x00000002 /* filesystem written synchronously */
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| 166 | #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
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| 167 | #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
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| 168 | #define MNT_NODEV 0x00000010 /* don't interpret special files */
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| 169 | #define MNT_UNION 0x00000020 /* union with underlying filesystem */
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| 170 | #define MNT_ASYNC 0x00000040 /* filesystem written asynchronously */
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| 171 | #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
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| 172 | #define MNT_SOFTDEP 0x00200000 /* soft updates being done */
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| 173 | #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
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| 174 | #define MNT_JAILDEVFS 0x02000000 /* jail-friendly DEVFS behaviour */
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| 175 | #define MNT_MULTILABEL 0x04000000 /* MAC support for individual objects */
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| 176 | #define MNT_ACLS 0x08000000 /* ACL support enabled */
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| 177 | #define MNT_NOATIME 0x10000000 /* disable update of file access time */
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| 178 | #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
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| 179 | #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
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| 180 |
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| 181 | /*
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| 182 | * NFS export related mount flags.
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| 183 | */
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| 184 | #define MNT_EXRDONLY 0x00000080 /* exported read only */
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| 185 | #define MNT_EXPORTED 0x00000100 /* filesystem is exported */
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| 186 | #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
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| 187 | #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
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| 188 | #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
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| 189 | #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
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| 190 |
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| 191 | /*
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| 192 | * Flags set by internal operations,
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| 193 | * but visible to the user.
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| 194 | * XXX some of these are not quite right.. (I've never seen the root flag set)
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| 195 | */
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| 196 | #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
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| 197 | #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
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| 198 | #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
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| 199 | #define MNT_USER 0x00008000 /* mounted by a user */
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| 200 | #define MNT_IGNORE 0x00800000 /* do not show entry in df */
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| 201 |
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| 202 | /*
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| 203 | * Mask of flags that are visible to statfs().
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| 204 | * XXX I think that this could now become (~(MNT_CMDFLAGS))
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| 205 | * but the 'mount' program may need changing to handle this.
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| 206 | */
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| 207 | #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
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| 208 | MNT_NOSUID | MNT_NODEV | MNT_UNION | \
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| 209 | MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
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| 210 | MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
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| 211 | MNT_LOCAL | MNT_USER | MNT_QUOTA | \
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| 212 | MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
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| 213 | MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
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| 214 | MNT_IGNORE | MNT_EXPUBLIC | MNT_NOSYMFOLLOW | \
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| 215 | MNT_JAILDEVFS | MNT_MULTILABEL | MNT_ACLS)
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| 216 |
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| 217 | /* Mask of flags that can be updated. */
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| 218 | #define MNT_UPDATEMASK (MNT_NOSUID | MNT_NOEXEC | MNT_NODEV | \
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| 219 | MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | \
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| 220 | MNT_NOATIME | \
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| 221 | MNT_NOSYMFOLLOW | MNT_IGNORE | MNT_JAILDEVFS | \
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| 222 | MNT_NOCLUSTERR | MNT_NOCLUSTERW | MNT_SUIDDIR | \
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| 223 | MNT_ACLS )
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| 224 |
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| 225 | /*
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| 226 | * External filesystem command modifier flags.
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| 227 | * Unmount can use the MNT_FORCE flag.
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| 228 | * XXX These are not STATES and really should be somewhere else.
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| 229 | */
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| 230 | #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
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| 231 | #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
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| 232 | #define MNT_RELOAD 0x00040000 /* reload filesystem data */
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| 233 | #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
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| 234 | #define MNT_SNAPSHOT 0x01000000 /* snapshot the filesystem */
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| 235 | #define MNT_CMDFLAGS (MNT_UPDATE | MNT_DELEXPORT | MNT_RELOAD | \
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| 236 | MNT_FORCE | MNT_SNAPSHOT)
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| 237 | /*
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| 238 | * Still available
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| 239 | */
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| 240 | #define MNT_SPARE3 0x08000000
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| 241 | /*
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| 242 | * Internal filesystem control flags stored in mnt_kern_flag.
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| 243 | *
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| 244 | * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
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| 245 | * past the mount point. This keeps the subtree stable during mounts
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| 246 | * and unmounts.
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| 247 | *
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| 248 | * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
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| 249 | * dounmount() is still waiting to lock the mountpoint. This allows
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| 250 | * the filesystem to cancel operations that might otherwise deadlock
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| 251 | * with the unmount attempt (used by NFS).
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| 252 | */
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| 253 | #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
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| 254 | #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
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| 255 | #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
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| 256 | #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
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| 257 | #define MNTK_SUSPEND 0x08000000 /* request write suspension */
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| 258 | #define MNTK_SUSPENDED 0x10000000 /* write operations are suspended */
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| 259 |
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| 260 | /*
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| 261 | * Sysctl CTL_VFS definitions.
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| 262 | *
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| 263 | * Second level identifier specifies which filesystem. Second level
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| 264 | * identifier VFS_VFSCONF returns information about all filesystems.
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| 265 | * Second level identifier VFS_GENERIC is non-terminal.
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| 266 | */
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| 267 | #define VFS_VFSCONF 0 /* get configured filesystems */
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| 268 | #define VFS_GENERIC 0 /* generic filesystem information */
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| 269 | /*
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| 270 | * Third level identifiers for VFS_GENERIC are given below; third
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| 271 | * level identifiers for specific filesystems are given in their
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| 272 | * mount specific header files.
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| 273 | */
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| 274 | #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
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| 275 | #define VFS_CONF 2 /* struct: vfsconf for filesystem given
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| 276 | as next argument */
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| 277 |
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| 278 | /*
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| 279 | * Flags for various system call interfaces.
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| 280 | *
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| 281 | * waitfor flags to vfs_sync() and getfsstat()
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| 282 | */
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| 283 | #define MNT_WAIT 1 /* synchronously wait for I/O to complete */
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| 284 | #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
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| 285 | #define MNT_LAZY 3 /* push data not written by filesystem syncer */
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| 286 |
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| 287 | #if 0 /* bird: we don't implement this. */
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| 288 | /*
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| 289 | * Generic file handle
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| 290 | */
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| 291 | struct fhandle {
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| 292 | fsid_t fh_fsid; /* Filesystem id of mount point */
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| 293 | struct fid fh_fid; /* Filesys specific id */
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| 294 | };
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| 295 | typedef struct fhandle fhandle_t;
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| 296 |
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| 297 | /*
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| 298 | * Export arguments for local filesystem mount calls.
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| 299 | */
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| 300 | struct export_args {
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| 301 | int ex_flags; /* export related flags */
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| 302 | uid_t ex_root; /* mapping for root uid */
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| 303 | struct xucred ex_anon; /* mapping for anonymous user */
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| 304 | struct sockaddr *ex_addr; /* net address to which exported */
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| 305 | u_char ex_addrlen; /* and the net address length */
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| 306 | struct sockaddr *ex_mask; /* mask of valid bits in saddr */
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| 307 | u_char ex_masklen; /* and the smask length */
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| 308 | char *ex_indexfile; /* index file for WebNFS URLs */
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| 309 | };
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| 310 |
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| 311 | /*
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| 312 | * Structure holding information for a publicly exported filesystem
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| 313 | * (WebNFS). Currently the specs allow just for one such filesystem.
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| 314 | */
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| 315 | struct nfs_public {
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| 316 | int np_valid; /* Do we hold valid information */
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| 317 | fhandle_t np_handle; /* Filehandle for pub fs (internal) */
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| 318 | struct mount *np_mount; /* Mountpoint of exported fs */
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| 319 | char *np_index; /* Index file */
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| 320 | };
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| 321 |
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| 322 | /*
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| 323 | * Filesystem configuration information. One of these exists for each
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| 324 | * type of filesystem supported by the kernel. These are searched at
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| 325 | * mount time to identify the requested filesystem.
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| 326 | */
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| 327 | struct vfsconf {
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| 328 | struct vfsops *vfc_vfsops; /* filesystem operations vector */
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| 329 | char vfc_name[MFSNAMELEN]; /* filesystem type name */
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| 330 | int vfc_typenum; /* historic filesystem type number */
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| 331 | int vfc_refcount; /* number mounted of this type */
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| 332 | int vfc_flags; /* permanent flags */
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| 333 | struct vfsoptdecl *vfc_opts; /* mount options */
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| 334 | struct vfsconf *vfc_next; /* next in list */
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| 335 | };
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| 336 |
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| 337 | /* Userland version of the struct vfsconf. */
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| 338 | struct xvfsconf {
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| 339 | struct vfsops *vfc_vfsops; /* filesystem operations vector */
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| 340 | char vfc_name[MFSNAMELEN]; /* filesystem type name */
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| 341 | int vfc_typenum; /* historic filesystem type number */
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| 342 | int vfc_refcount; /* number mounted of this type */
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| 343 | int vfc_flags; /* permanent flags */
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| 344 | struct vfsconf *vfc_next; /* next in list */
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| 345 | };
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| 346 |
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| 347 | struct ovfsconf {
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| 348 | void *vfc_vfsops;
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| 349 | char vfc_name[32];
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| 350 | int vfc_index;
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| 351 | int vfc_refcount;
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| 352 | int vfc_flags;
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| 353 | };
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| 354 | #endif /* bird */
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| 355 |
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| 356 | /*
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| 357 | * NB: these flags refer to IMPLEMENTATION properties, not properties of
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| 358 | * any actual mounts; i.e., it does not make sense to change the flags.
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| 359 | */
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| 360 | #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
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| 361 | #define VFCF_NETWORK 0x00020000 /* may get data over the network */
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| 362 | #define VFCF_READONLY 0x00040000 /* writes are not implemented */
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| 363 | #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
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| 364 | #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
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| 365 | #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
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| 366 |
|
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| 367 | struct iovec;
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| 368 | struct uio;
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| 369 |
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| 370 | #ifdef _KERNEL
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| 371 |
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| 372 | #ifdef MALLOC_DECLARE
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| 373 | MALLOC_DECLARE(M_MOUNT);
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| 374 | #endif
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| 375 | extern int maxvfsconf; /* highest defined filesystem type */
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| 376 | extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
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| 377 | extern struct vfsconf *vfsconf; /* head of list of filesystem types */
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| 378 |
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| 379 | /*
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| 380 | * Operations supported on mounted filesystem.
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| 381 | */
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| 382 | struct mount_args;
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| 383 | struct nameidata;
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| 384 |
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| 385 | typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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| 386 | struct nameidata *ndp, struct thread *td);
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| 387 | typedef int vfs_start_t(struct mount *mp, int flags, struct thread *td);
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| 388 | typedef int vfs_unmount_t(struct mount *mp, int mntflags, struct thread *td);
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| 389 | typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
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| 390 | typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid,
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| 391 | caddr_t arg, struct thread *td);
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| 392 | typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
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| 393 | struct thread *td);
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| 394 | typedef int vfs_sync_t(struct mount *mp, int waitfor, struct ucred *cred,
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| 395 | struct thread *td);
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| 396 | typedef int vfs_vget_t(struct mount *mp, ino_t ino, int flags,
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| 397 | struct vnode **vpp);
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| 398 | typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp, struct vnode **vpp);
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| 399 | typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
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| 400 | int *extflagsp, struct ucred **credanonp);
|
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| 401 | typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
|
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| 402 | typedef int vfs_init_t(struct vfsconf *);
|
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| 403 | typedef int vfs_uninit_t(struct vfsconf *);
|
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| 404 | typedef int vfs_extattrctl_t(struct mount *mp, int cmd,
|
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| 405 | struct vnode *filename_vp, int attrnamespace,
|
|---|
| 406 | const char *attrname, struct thread *td);
|
|---|
| 407 | typedef int vfs_nmount_t(struct mount *mp, struct nameidata *ndp,
|
|---|
| 408 | struct thread *td);
|
|---|
| 409 |
|
|---|
| 410 | struct vfsops {
|
|---|
| 411 | vfs_mount_t *vfs_mount;
|
|---|
| 412 | vfs_start_t *vfs_start;
|
|---|
| 413 | vfs_unmount_t *vfs_unmount;
|
|---|
| 414 | vfs_root_t *vfs_root;
|
|---|
| 415 | vfs_quotactl_t *vfs_quotactl;
|
|---|
| 416 | vfs_statfs_t *vfs_statfs;
|
|---|
| 417 | vfs_sync_t *vfs_sync;
|
|---|
| 418 | vfs_vget_t *vfs_vget;
|
|---|
| 419 | vfs_fhtovp_t *vfs_fhtovp;
|
|---|
| 420 | vfs_checkexp_t *vfs_checkexp;
|
|---|
| 421 | vfs_vptofh_t *vfs_vptofh;
|
|---|
| 422 | vfs_init_t *vfs_init;
|
|---|
| 423 | vfs_uninit_t *vfs_uninit;
|
|---|
| 424 | vfs_extattrctl_t *vfs_extattrctl;
|
|---|
| 425 | /* Additions below are not binary compatible with 5.0 and below. */
|
|---|
| 426 | vfs_nmount_t *vfs_nmount;
|
|---|
| 427 | };
|
|---|
| 428 |
|
|---|
| 429 | #define VFS_NMOUNT(MP, NDP, P) (*(MP)->mnt_op->vfs_nmount)(MP, NDP, P)
|
|---|
| 430 | #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
|
|---|
| 431 | (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
|
|---|
| 432 | #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
|
|---|
| 433 | #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
|
|---|
| 434 | #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
|
|---|
| 435 | #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
|
|---|
| 436 | #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
|
|---|
| 437 | #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P)
|
|---|
| 438 | #define VFS_VGET(MP, INO, FLAGS, VPP) \
|
|---|
| 439 | (*(MP)->mnt_op->vfs_vget)(MP, INO, FLAGS, VPP)
|
|---|
| 440 | #define VFS_FHTOVP(MP, FIDP, VPP) \
|
|---|
| 441 | (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
|
|---|
| 442 | #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
|
|---|
| 443 | #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
|
|---|
| 444 | (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
|
|---|
| 445 | #define VFS_EXTATTRCTL(MP, C, FN, NS, N, P) \
|
|---|
| 446 | (*(MP)->mnt_op->vfs_extattrctl)(MP, C, FN, NS, N, P)
|
|---|
| 447 |
|
|---|
| 448 | #include <sys/module.h>
|
|---|
| 449 |
|
|---|
| 450 | #define VFS_SET(vfsops, fsname, flags) \
|
|---|
| 451 | static struct vfsconf fsname ## _vfsconf = { \
|
|---|
| 452 | &vfsops, \
|
|---|
| 453 | #fsname, \
|
|---|
| 454 | -1, \
|
|---|
| 455 | 0, \
|
|---|
| 456 | flags \
|
|---|
| 457 | }; \
|
|---|
| 458 | static moduledata_t fsname ## _mod = { \
|
|---|
| 459 | #fsname, \
|
|---|
| 460 | vfs_modevent, \
|
|---|
| 461 | & fsname ## _vfsconf \
|
|---|
| 462 | }; \
|
|---|
| 463 | DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
|
|---|
| 464 |
|
|---|
| 465 | extern char *mountrootfsname;
|
|---|
| 466 |
|
|---|
| 467 | /*
|
|---|
| 468 | * exported vnode operations
|
|---|
| 469 | */
|
|---|
| 470 | int dounmount(struct mount *, int, struct thread *td);
|
|---|
| 471 | int kernel_mount(struct iovec *iovp, unsigned int iovcnt, int flags);
|
|---|
| 472 | int kernel_vmount(int flags, ...);
|
|---|
| 473 | int vfs_getopt(struct vfsoptlist *, const char *, void **, int *);
|
|---|
| 474 | int vfs_copyopt(struct vfsoptlist *, const char *, void *, int);
|
|---|
| 475 | int vfs_mount(struct thread *td, const char *type, char *path,
|
|---|
| 476 | int flags, void *data);
|
|---|
| 477 | int vfs_setpublicfs /* set publicly exported fs */
|
|---|
| 478 | (struct mount *, struct netexport *, struct export_args *);
|
|---|
| 479 | int vfs_lock(struct mount *); /* lock a vfs */
|
|---|
| 480 | void vfs_msync(struct mount *, int);
|
|---|
| 481 | void vfs_unlock(struct mount *); /* unlock a vfs */
|
|---|
| 482 | int vfs_busy(struct mount *, int, struct mtx *, struct thread *td);
|
|---|
| 483 | int vfs_export /* process mount export info */
|
|---|
| 484 | (struct mount *, struct export_args *);
|
|---|
| 485 | struct netcred *vfs_export_lookup /* lookup host in fs export list */
|
|---|
| 486 | (struct mount *, struct sockaddr *);
|
|---|
| 487 | int vfs_allocate_syncvnode(struct mount *);
|
|---|
| 488 | void vfs_getnewfsid(struct mount *);
|
|---|
| 489 | dev_t vfs_getrootfsid(struct mount *);
|
|---|
| 490 | struct mount *vfs_getvfs(fsid_t *); /* return vfs given fsid */
|
|---|
| 491 | int vfs_modevent(module_t, int, void *);
|
|---|
| 492 | int vfs_mountedon(struct vnode *); /* is a vfs mounted on vp */
|
|---|
| 493 | void vfs_mountroot(void); /* mount our root filesystem */
|
|---|
| 494 | int vfs_rootmountalloc(char *, char *, struct mount **);
|
|---|
| 495 | void vfs_unbusy(struct mount *, struct thread *td);
|
|---|
| 496 | void vfs_unmountall(void);
|
|---|
| 497 | int vfs_register(struct vfsconf *);
|
|---|
| 498 | int vfs_unregister(struct vfsconf *);
|
|---|
| 499 | extern TAILQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */
|
|---|
| 500 | extern struct mtx mountlist_mtx;
|
|---|
| 501 | extern struct nfs_public nfs_pub;
|
|---|
| 502 |
|
|---|
| 503 | /*
|
|---|
| 504 | * Declarations for these vfs default operations are located in
|
|---|
| 505 | * kern/vfs_default.c, they should be used instead of making "dummy"
|
|---|
| 506 | * functions or casting entries in the VFS op table to "enopnotsupp()".
|
|---|
| 507 | */
|
|---|
| 508 | vfs_start_t vfs_stdstart;
|
|---|
| 509 | vfs_root_t vfs_stdroot;
|
|---|
| 510 | vfs_quotactl_t vfs_stdquotactl;
|
|---|
| 511 | vfs_statfs_t vfs_stdstatfs;
|
|---|
| 512 | vfs_sync_t vfs_stdsync;
|
|---|
| 513 | vfs_sync_t vfs_stdnosync;
|
|---|
| 514 | vfs_vget_t vfs_stdvget;
|
|---|
| 515 | vfs_fhtovp_t vfs_stdfhtovp;
|
|---|
| 516 | vfs_checkexp_t vfs_stdcheckexp;
|
|---|
| 517 | vfs_vptofh_t vfs_stdvptofh;
|
|---|
| 518 | vfs_init_t vfs_stdinit;
|
|---|
| 519 | vfs_uninit_t vfs_stduninit;
|
|---|
| 520 | vfs_extattrctl_t vfs_stdextattrctl;
|
|---|
| 521 |
|
|---|
| 522 | /* XXX - these should be indirect functions!!! */
|
|---|
| 523 | int softdep_fsync(struct vnode *);
|
|---|
| 524 | int softdep_process_worklist(struct mount *);
|
|---|
| 525 |
|
|---|
| 526 | #else /* !_KERNEL */
|
|---|
| 527 |
|
|---|
| 528 | #include <sys/cdefs.h>
|
|---|
| 529 |
|
|---|
| 530 | struct stat;
|
|---|
| 531 |
|
|---|
| 532 | __BEGIN_DECLS
|
|---|
| 533 | #if 0 /* bird: we don't do these. */
|
|---|
| 534 | int fhopen(const struct fhandle *, int);
|
|---|
| 535 | int fhstat(const struct fhandle *, struct stat *);
|
|---|
| 536 | int fhstatfs(const struct fhandle *, struct statfs *);
|
|---|
| 537 | #endif /* bird */
|
|---|
| 538 | int fstatfs(int, struct statfs *);
|
|---|
| 539 | #if 0 /* bird: we don't do this. */
|
|---|
| 540 | int getfh(const char *, fhandle_t *);
|
|---|
| 541 | #endif /* bird */
|
|---|
| 542 | int getfsstat(struct statfs *, long, int);
|
|---|
| 543 | int getmntinfo(struct statfs **, int);
|
|---|
| 544 | #if 0 /* bird: we don't do these. */
|
|---|
| 545 | int mount(const char *, const char *, int, void *);
|
|---|
| 546 | int nmount(struct iovec *, u_int, int);
|
|---|
| 547 | #endif /* bird */
|
|---|
| 548 | int statfs(const char *, struct statfs *);
|
|---|
| 549 | #if 0 /* bird: we don't do these. */
|
|---|
| 550 | int unmount(const char *, int);
|
|---|
| 551 |
|
|---|
| 552 | /* C library stuff */
|
|---|
| 553 | void endvfsent(void);
|
|---|
| 554 | struct ovfsconf *getvfsbytype(int);
|
|---|
| 555 | struct ovfsconf *getvfsent(void);
|
|---|
| 556 | int getvfsbyname(const char *, struct xvfsconf *);
|
|---|
| 557 | void setvfsent(int);
|
|---|
| 558 | int vfsisloadable(const char *);
|
|---|
| 559 | int vfsload(const char *);
|
|---|
| 560 | #endif /* bird */
|
|---|
| 561 | __END_DECLS
|
|---|
| 562 |
|
|---|
| 563 | #endif /* _KERNEL */
|
|---|
| 564 |
|
|---|
| 565 | #endif /* !_SYS_MOUNT_H_ */
|
|---|
