LCOM1920-T02G10

/*        $NetBSD: mount.h,v 1.217 2015/05/06 15:57:08 hannken Exp $        */

/*

 * Copyright (c) 1989, 1991, 1993

 *        The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *        @(#)mount.h        8.21 (Berkeley) 5/20/95

 */

#ifndef _SYS_MOUNT_H_

#define _SYS_MOUNT_H_

#ifndef _KERNEL

#include <sys/featuretest.h>

#if defined(_NETBSD_SOURCE)

#include <sys/stat.h>

#endif /* _NETBSD_SOURCE */

#endif

#ifndef _STANDALONE

#include <sys/param.h> /* precautionary upon removal from ucred.h */

#include <sys/time.h>

#include <sys/uio.h>

#include <sys/ucred.h>

#include <sys/fstypes.h>

#include <sys/queue.h>

#include <sys/rwlock.h>

#include <sys/statvfs.h>

#include <sys/specificdata.h>

#include <sys/condvar.h>

#endif        /* !_STANDALONE */

/*

 * file system statistics

 */

#define        MNAMELEN        90        /* length of buffer for returned name */

/*

 * File system types.

 */

#define        MOUNT_FFS        "ffs"                /* UNIX "Fast" Filesystem */

#define        MOUNT_UFS        MOUNT_FFS        /* for compatibility */

#define        MOUNT_NFS        "nfs"                /* Network Filesystem */

#define        MOUNT_MFS        "mfs"                /* Memory Filesystem */

#define        MOUNT_MSDOS        "msdos"                /* MSDOS Filesystem */

#define        MOUNT_LFS        "lfs"                /* Log-based Filesystem */

#define        MOUNT_FDESC        "fdesc"                /* File Descriptor Filesystem */

#define        MOUNT_NULL        "null"                /* Minimal Filesystem Layer */

#define        MOUNT_OVERLAY        "overlay"        /* Minimal Overlay Filesystem Layer */

#define        MOUNT_UMAP        "umap"        /* User/Group Identifier Remapping Filesystem */

#define        MOUNT_KERNFS        "kernfs"        /* Kernel Information Filesystem */

#define        MOUNT_PROCFS        "procfs"        /* /proc Filesystem */

#define        MOUNT_AFS        "afs"                /* Andrew Filesystem */

#define        MOUNT_CD9660        "cd9660"        /* ISO9660 (aka CDROM) Filesystem */

#define        MOUNT_UNION        "union"                /* Union (translucent) Filesystem */

#define        MOUNT_ADOSFS        "adosfs"        /* AmigaDOS Filesystem */

#define        MOUNT_EXT2FS        "ext2fs"        /* Second Extended Filesystem */

#define        MOUNT_CFS        "coda"                /* Coda Filesystem */

#define        MOUNT_CODA        MOUNT_CFS        /* Coda Filesystem */

#define        MOUNT_FILECORE        "filecore"        /* Acorn Filecore Filesystem */

#define        MOUNT_NTFS        "ntfs"                /* Windows/NT Filesystem */

#define        MOUNT_SMBFS        "smbfs"                /* CIFS (SMB) */

#define        MOUNT_PTYFS        "ptyfs"                /* Pseudo tty filesystem */

#define        MOUNT_TMPFS        "tmpfs"                /* Efficient memory file-system */

#define MOUNT_UDF        "udf"                /* UDF CD/DVD filesystem */

#define        MOUNT_SYSVBFS        "sysvbfs"        /* System V Boot Filesystem */

#define MOUNT_PUFFS        "puffs"                /* Pass-to-Userspace filesystem */

#define MOUNT_HFS        "hfs"                /* Apple HFS+ Filesystem */

#define MOUNT_EFS        "efs"                /* SGI's Extent Filesystem */

#define MOUNT_ZFS        "zfs"                /* Sun ZFS */

#define MOUNT_NILFS        "nilfs"                /* NTT's NiLFS(2) logging file system */

#define MOUNT_RUMPFS        "rumpfs"        /* rump virtual file system */

#define        MOUNT_V7FS        "v7fs"                /* 7th Edition of Unix Filesystem */

#ifndef _STANDALONE

struct vnode;

struct vattr;

/*

 * Structure per mounted file system.  Each mounted file system has an

 * array of operations and an instance record.  The file systems are

 * put on a doubly linked list.

 */

struct mount {

        TAILQ_ENTRY(mount) mnt_list;                /* mount list */

        TAILQ_HEAD(, vnode) mnt_vnodelist;        /* list of vnodes this mount */

        struct vfsops        *mnt_op;                /* operations on fs */

        struct vnode        *mnt_vnodecovered;        /* vnode we mounted on */

        int                mnt_synclist_slot;        /* synclist slot index */

        void                *mnt_transinfo;                /* for FS-internal use */

        void                *mnt_data;                /* private data */

        kmutex_t        mnt_unmounting;                /* to prevent new activity */

        kmutex_t        mnt_renamelock;                /* per-fs rename lock */

        int                mnt_refcnt;                /* ref count on this structure */

        unsigned int        mnt_busynest;                /* vfs_busy nestings */

        int                mnt_flag;                /* flags */

        int                mnt_iflag;                /* internal flags */

        int                mnt_fs_bshift;                /* offset shift for lblkno */

        int                mnt_dev_bshift;                /* shift for device sectors */

        struct statvfs        mnt_stat;                /* cache of filesystem stats */

        specificdata_reference

                        mnt_specdataref;        /* subsystem specific data */

        kmutex_t        mnt_updating;                /* to serialize updates */

        struct wapbl_ops

                        *mnt_wapbl_op;                /* logging ops */

        struct wapbl        *mnt_wapbl;                /* log info */

        struct wapbl_replay

                        *mnt_wapbl_replay;        /* replay support XXX: what? */

        uint64_t        mnt_gen;

};

/*

 * Sysctl CTL_VFS definitions.

 *

 * Second level identifier specifies which filesystem. Second level

 * identifier VFS_GENERIC returns information about all filesystems.

 *

 * Note the slightly non-flat nature of these sysctl numbers.  Oh for

 * a better sysctl interface.

 */

#define VFS_GENERIC        0                /* generic filesystem information */

#define VFS_MAXTYPENUM        1                /* int: highest defined fs type */

#define VFS_CONF        2                /* struct: vfsconf for filesystem given

                                           as next argument */

#define VFS_USERMOUNT        3                /* enable/disable fs mnt by non-root */

#define        VFS_MAGICLINKS  4                /* expand 'magic' symlinks */

#define        VFSGEN_MAXID        5                /* number of valid vfs.generic ids */

/*

 * USE THE SAME NAMES AS MOUNT_*!

 *

 * Only need to add new entry here if the filesystem actually supports

 * sysctl(2).

 */

#define        CTL_VFS_NAMES { \

        { "generic", CTLTYPE_NODE }, \

        { MOUNT_FFS, CTLTYPE_NODE }, \

        { MOUNT_NFS, CTLTYPE_NODE }, \

        { MOUNT_MFS, CTLTYPE_NODE }, \

        { MOUNT_MSDOS, CTLTYPE_NODE }, \

        { MOUNT_LFS, CTLTYPE_NODE }, \

        { 0, 0 },                         /* MOUNT_LOFS */ \

        { MOUNT_FDESC, CTLTYPE_NODE }, \

        { MOUNT_NULL, CTLTYPE_NODE }, \

        { MOUNT_UMAP, CTLTYPE_NODE }, \

        { MOUNT_KERNFS, CTLTYPE_NODE }, \

        { MOUNT_PROCFS, CTLTYPE_NODE }, \

        { MOUNT_AFS, CTLTYPE_NODE }, \

        { MOUNT_CD9660, CTLTYPE_NODE }, \

        { MOUNT_UNION, CTLTYPE_NODE }, \

        { MOUNT_ADOSFS, CTLTYPE_NODE }, \

        { MOUNT_EXT2FS, CTLTYPE_NODE }, \

        { MOUNT_CODA, CTLTYPE_NODE }, \

        { MOUNT_FILECORE, CTLTYPE_NODE }, \

        { MOUNT_NTFS, CTLTYPE_NODE }, \

}

#define        VFS_MAXID        20                /* number of valid vfs ids */

#define        CTL_VFSGENCTL_NAMES { \

        { 0, 0 }, \

        { "maxtypenum", CTLTYPE_INT }, \

        { "conf", CTLTYPE_NODE },         /* Special */ \

        { "usermount", CTLTYPE_INT }, \

        { "magiclinks", CTLTYPE_INT }, \

}

#if defined(_KERNEL)

struct quotactl_args;                /* in sys/quotactl.h */

struct quotastat;                /* in sys/quotactl.h */

struct quotaidtypestat;                /* in sys/quotactl.h */

struct quotaobjtypestat;        /* in sys/quotactl.h */

struct quotakcursor;                /* in sys/quotactl.h */

struct quotakey;                /* in sys/quota.h */

struct quotaval;                /* in sys/quota.h */

#if __STDC__

struct nameidata;

#endif

/*

 * Operations supported on mounted file system.

 */

struct vfsops {

        const char *vfs_name;

        size_t        vfs_min_mount_data;

        int        (*vfs_mount)        (struct mount *, const char *, void *,

                                    size_t *);

        int        (*vfs_start)        (struct mount *, int);

        int        (*vfs_unmount)        (struct mount *, int);

        int        (*vfs_root)        (struct mount *, struct vnode **);

        int        (*vfs_quotactl)        (struct mount *, struct quotactl_args *);

        int        (*vfs_statvfs)        (struct mount *, struct statvfs *);

        int        (*vfs_sync)        (struct mount *, int, struct kauth_cred *);

        int        (*vfs_vget)        (struct mount *, ino_t, struct vnode **);

        int        (*vfs_loadvnode) (struct mount *, struct vnode *,

                                    const void *, size_t, const void **);

        int        (*vfs_newvnode) (struct mount *, struct vnode *, struct vnode *,

                                    struct vattr *, kauth_cred_t,

                                    size_t *, const void **);

        int        (*vfs_fhtovp)        (struct mount *, struct fid *,

                                    struct vnode **);

        int        (*vfs_vptofh)        (struct vnode *, struct fid *, size_t *);

        void        (*vfs_init)        (void);

        void        (*vfs_reinit)        (void);

        void        (*vfs_done)        (void);

        int        (*vfs_mountroot)(void);

        int        (*vfs_snapshot)        (struct mount *, struct vnode *,

                                    struct timespec *);

        int        (*vfs_extattrctl) (struct mount *, int,

                                    struct vnode *, int, const char *);

        int        (*vfs_suspendctl) (struct mount *, int);

        int        (*vfs_renamelock_enter)(struct mount *);

        void        (*vfs_renamelock_exit)(struct mount *);

        int        (*vfs_fsync)        (struct vnode *, int);

        const struct vnodeopv_desc * const *vfs_opv_descs;

        int        vfs_refcount;

        LIST_ENTRY(vfsops) vfs_list;

};

/* XXX vget is actually file system internal. */

#define VFS_VGET(MP, INO, VPP)    (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)

#define VFS_LOADVNODE(MP, VP, KEY, KEY_LEN, NEW_KEY) \

        (*(MP)->mnt_op->vfs_loadvnode)(MP, VP, KEY, KEY_LEN, NEW_KEY)

#define VFS_NEWVNODE(MP, DVP, VP, VAP, CRED, NEW_LEN, NEW_KEY) \

        (*(MP)->mnt_op->vfs_newvnode)(MP, DVP, VP, VAP, CRED, NEW_LEN, NEW_KEY)

#define VFS_RENAMELOCK_ENTER(MP)  (*(MP)->mnt_op->vfs_renamelock_enter)(MP)

#define VFS_RENAMELOCK_EXIT(MP)   (*(MP)->mnt_op->vfs_renamelock_exit)(MP)

#define VFS_FSYNC(MP, VP, FLG)          (*(MP)->mnt_op->vfs_fsync)(VP, FLG)

int        VFS_MOUNT(struct mount *, const char *, void *, size_t *);

int        VFS_START(struct mount *, int);

int        VFS_UNMOUNT(struct mount *, int);

int        VFS_ROOT(struct mount *, struct vnode **);

int        VFS_QUOTACTL(struct mount *, struct quotactl_args *);

int        VFS_STATVFS(struct mount *, struct statvfs *);

int        VFS_SYNC(struct mount *, int, struct kauth_cred *);

int        VFS_FHTOVP(struct mount *, struct fid *, struct vnode **);

int        VFS_VPTOFH(struct vnode *, struct fid *, size_t *);

int        VFS_SNAPSHOT(struct mount *, struct vnode *, struct timespec *);

int        VFS_EXTATTRCTL(struct mount *, int, struct vnode *, int, const char *);

int        VFS_SUSPENDCTL(struct mount *, int);

#endif /* _KERNEL */

#ifdef _KERNEL

#if __STDC__

struct mbuf;

struct vnodeopv_desc;

struct kauth_cred;

#endif

#define        VFS_MAX_MOUNT_DATA        8192

#define VFS_PROTOS(fsname)                                                \

int        fsname##_mount(struct mount *, const char *, void *,                \

                size_t *);                                                \

int        fsname##_start(struct mount *, int);                                \

int        fsname##_unmount(struct mount *, int);                                \

int        fsname##_root(struct mount *, struct vnode **);                        \

int        fsname##_quotactl(struct mount *, struct quotactl_args *);        \

int        fsname##_statvfs(struct mount *, struct statvfs *);                \

int        fsname##_sync(struct mount *, int, struct kauth_cred *);        \

int        fsname##_vget(struct mount *, ino_t, struct vnode **);                \

int        fsname##_loadvnode(struct mount *, struct vnode *,                \

                const void *, size_t, const void **);                        \

int        fsname##_newvnode(struct mount *, struct vnode *,                \

                struct vnode *, struct vattr *, kauth_cred_t,                \

                size_t *, const void **);                                \

int        fsname##_fhtovp(struct mount *, struct fid *, struct vnode **);        \

int        fsname##_vptofh(struct vnode *, struct fid *, size_t *);        \

void        fsname##_init(void);                                                \

void        fsname##_reinit(void);                                                \

void        fsname##_done(void);                                                \

int        fsname##_mountroot(void);                                        \

int        fsname##_snapshot(struct mount *, struct vnode *,                \

                struct timespec *);                                        \

int        fsname##_extattrctl(struct mount *, int, struct vnode *, int,        \

                const char *);                                                \

int        fsname##_suspendctl(struct mount *, int)

/*

 * This operations vector is so wapbl can be wrapped into a filesystem lkm.

 * XXX Eventually, we want to move this functionality

 * down into the filesystems themselves so that this isn't needed.

 */

struct wapbl_ops {

        void (*wo_wapbl_discard)(struct wapbl *);

        int (*wo_wapbl_replay_isopen)(struct wapbl_replay *);

        int (*wo_wapbl_replay_can_read)(struct wapbl_replay *, daddr_t, long);

        int (*wo_wapbl_replay_read)(struct wapbl_replay *, void *, daddr_t, long);

        void (*wo_wapbl_add_buf)(struct wapbl *, struct buf *);

        void (*wo_wapbl_remove_buf)(struct wapbl *, struct buf *);

        void (*wo_wapbl_resize_buf)(struct wapbl *, struct buf *, long, long);

        int (*wo_wapbl_begin)(struct wapbl *, const char *, int);

        void (*wo_wapbl_end)(struct wapbl *);

        void (*wo_wapbl_junlock_assert)(struct wapbl *);

        void (*wo_wapbl_biodone)(struct buf *);

};

#define WAPBL_DISCARD(MP)                                                \

    (*(MP)->mnt_wapbl_op->wo_wapbl_discard)((MP)->mnt_wapbl)

#define WAPBL_REPLAY_ISOPEN(MP)                                                \

    (*(MP)->mnt_wapbl_op->wo_wapbl_replay_isopen)((MP)->mnt_wapbl_replay)

#define WAPBL_REPLAY_CAN_READ(MP, BLK, LEN)                                \

    (*(MP)->mnt_wapbl_op->wo_wapbl_replay_can_read)((MP)->mnt_wapbl_replay, \

    (BLK), (LEN))

#define WAPBL_REPLAY_READ(MP, DATA, BLK, LEN)                                \

    (*(MP)->mnt_wapbl_op->wo_wapbl_replay_read)((MP)->mnt_wapbl_replay,        \

    (DATA), (BLK), (LEN))

#define WAPBL_ADD_BUF(MP, BP)                                                \

    (*(MP)->mnt_wapbl_op->wo_wapbl_add_buf)((MP)->mnt_wapbl, (BP))

#define WAPBL_REMOVE_BUF(MP, BP)                                        \

    (*(MP)->mnt_wapbl_op->wo_wapbl_remove_buf)((MP)->mnt_wapbl, (BP))

#define WAPBL_RESIZE_BUF(MP, BP, OLDSZ, OLDCNT)                                \

    (*(MP)->mnt_wapbl_op->wo_wapbl_resize_buf)((MP)->mnt_wapbl, (BP),        \

    (OLDSZ), (OLDCNT))

#define WAPBL_BEGIN(MP)                                                        \

    (*(MP)->mnt_wapbl_op->wo_wapbl_begin)((MP)->mnt_wapbl,                \

    __FILE__, __LINE__)

#define WAPBL_END(MP)                                                        \

    (*(MP)->mnt_wapbl_op->wo_wapbl_end)((MP)->mnt_wapbl)

#define WAPBL_JUNLOCK_ASSERT(MP)                                        \

    (*(MP)->mnt_wapbl_op->wo_wapbl_junlock_assert)((MP)->mnt_wapbl)

struct vfs_hooks {

        LIST_ENTRY(vfs_hooks) vfs_hooks_list;

        void        (*vh_unmount)(struct mount *);

        int        (*vh_reexport)(struct mount *, const char *, void *);

        void        (*vh_future_expansion_1)(void);

        void        (*vh_future_expansion_2)(void);

        void        (*vh_future_expansion_3)(void);

        void        (*vh_future_expansion_4)(void);

        void        (*vh_future_expansion_5)(void);

};

void        vfs_hooks_init(void);

int        vfs_hooks_attach(struct vfs_hooks *);

int        vfs_hooks_detach(struct vfs_hooks *);

void        vfs_hooks_unmount(struct mount *);

int        vfs_hooks_reexport(struct mount *, const char *, void *);

#endif /* _KERNEL */

/*

 * Export arguments for local filesystem mount calls.

 *

 * This structure is deprecated and is only provided for compatibility

 * reasons with old binary utilities; several file systems expose an

 * instance of this structure in their mount arguments structure, thus

 * needing a padding in place of the old values.  This definition cannot

 * change in the future due to this reason.

 * XXX: This should be moved to the compat subtree but cannot be done

 * until we can move the mount args structures themselves.

 *

 * The current export_args structure can be found in nfs/nfs.h.

 */

struct export_args30 {

        int        ex_flags;                /* export related flags */

        uid_t        ex_root;                /* mapping for root uid */

        struct        uucred ex_anon;                /* mapping for anonymous user */

        struct        sockaddr *ex_addr;        /* net address to which exported */

        int        ex_addrlen;                /* and the net address length */

        struct        sockaddr *ex_mask;        /* mask of valid bits in saddr */

        int        ex_masklen;                /* and the smask length */

        char        *ex_indexfile;                /* index file for WebNFS URLs */

};

struct mnt_export_args30 {

        const char *fspec;                /* Always NULL */

        struct export_args30 eargs;

};

#ifdef _KERNEL

/*

 * exported VFS interface (see vfssubr(9))

 */

struct        mount *vfs_getvfs(fsid_t *);    /* return vfs given fsid */

int        vfs_composefh(struct vnode *, fhandle_t *, size_t *);

int        vfs_composefh_alloc(struct vnode *, fhandle_t **);

void        vfs_composefh_free(fhandle_t *);

int        vfs_fhtovp(fhandle_t *, struct vnode **);

int        vfs_mountedon(struct vnode *);/* is a vfs mounted on vp */

int        vfs_mountroot(void);

void        vfs_shutdown(void);            /* unmount and sync file systems */

void        vfs_sync_all(struct lwp *);

bool        vfs_unmountall(struct lwp *);            /* unmount file systems */

bool        vfs_unmountall1(struct lwp *, bool, bool);

bool        vfs_unmount_forceone(struct lwp *);

int         vfs_busy(struct mount *, struct mount **);

int        vfs_rootmountalloc(const char *, const char *, struct mount **);

void        vfs_unbusy(struct mount *, bool, struct mount **);

int        vfs_attach(struct vfsops *);

int        vfs_detach(struct vfsops *);

void        vfs_reinit(void);

struct vfsops *vfs_getopsbyname(const char *);

void        vfs_delref(struct vfsops *);

void        vfs_destroy(struct mount *);

struct mount *vfs_mountalloc(struct vfsops *, struct vnode *);

int        vfs_stdextattrctl(struct mount *, int, struct vnode *,

            int, const char *);

void        vfs_insmntque(struct vnode *, struct mount *);

int        vfs_quotactl_stat(struct mount *, struct quotastat *);

int        vfs_quotactl_idtypestat(struct mount *, int, struct quotaidtypestat *);

int        vfs_quotactl_objtypestat(struct mount *,int,struct quotaobjtypestat *);

int        vfs_quotactl_get(struct mount *, const struct quotakey *,

            struct quotaval *);

int        vfs_quotactl_put(struct mount *, const struct quotakey *,

            const struct quotaval *);

int        vfs_quotactl_del(struct mount *, const struct quotakey *);

int        vfs_quotactl_cursoropen(struct mount *, struct quotakcursor *);

int        vfs_quotactl_cursorclose(struct mount *, struct quotakcursor *);

int        vfs_quotactl_cursorskipidtype(struct mount *, struct quotakcursor *,

            int);

int        vfs_quotactl_cursorget(struct mount *, struct quotakcursor *,

            struct quotakey *, struct quotaval *, unsigned, unsigned *);

int        vfs_quotactl_cursoratend(struct mount *, struct quotakcursor *, int *);

int        vfs_quotactl_cursorrewind(struct mount *, struct quotakcursor *);

int        vfs_quotactl_quotaon(struct mount *, int, const char *);

int        vfs_quotactl_quotaoff(struct mount *, int);

struct vnode_iterator; /* Opaque. */

void        vfs_vnode_iterator_init(struct mount *, struct vnode_iterator **);

void        vfs_vnode_iterator_destroy(struct vnode_iterator *);

struct vnode *vfs_vnode_iterator_next(struct vnode_iterator *,

    bool (*)(void *, struct vnode *), void *);

/* Syncer */

extern int        syncer_maxdelay;

extern kmutex_t        syncer_mutex;

extern time_t        syncdelay;

extern time_t        filedelay;

extern time_t        dirdelay; 

extern time_t        metadelay;

void        vfs_syncer_add_to_worklist(struct mount *);

void        vfs_syncer_remove_from_worklist(struct mount *);

extern        TAILQ_HEAD(mntlist, mount) mountlist;        /* mounted filesystem list */

extern        struct vfsops *vfssw[];                        /* filesystem type table */

extern        int nvfssw;

extern  kmutex_t mountlist_lock;

extern        kmutex_t vfs_list_lock;

void        vfs_mount_sysinit(void);

long        makefstype(const char *);

int        mount_domount(struct lwp *, struct vnode **, struct vfsops *,

            const char *, int, void *, size_t *);

int        dounmount(struct mount *, int, struct lwp *);

int        do_sys_mount(struct lwp *, struct vfsops *, const char *, const char *,

            int, void *, enum uio_seg, size_t, register_t *);

void        vfsinit(void);

void        vfs_opv_init(const struct vnodeopv_desc * const *);

void        vfs_opv_free(const struct vnodeopv_desc * const *);

#ifdef DEBUG

void        vfs_bufstats(void);

#endif

int        mount_specific_key_create(specificdata_key_t *, specificdata_dtor_t);

void        mount_specific_key_delete(specificdata_key_t);

void         mount_initspecific(struct mount *);

void         mount_finispecific(struct mount *);

void *        mount_getspecific(struct mount *, specificdata_key_t);

void        mount_setspecific(struct mount *, specificdata_key_t, void *);

int        usermount_common_policy(struct mount *, u_long);

void        mountlist_append(struct mount *);

LIST_HEAD(vfs_list_head, vfsops);

extern struct vfs_list_head vfs_list;

#else /* _KERNEL */

#include <sys/cdefs.h>

__BEGIN_DECLS

#if !defined(__LIBC12_SOURCE__) && !defined(_STANDALONE)

int        getfh(const char *, void *, size_t *)

        __RENAME(__getfh30);

#endif

#if !defined(__minix)

int        unmount(const char *, int);

#else

int        minix_umount(const char *_name, int srvflags);

#endif /* !defined(__minix) */

#if defined(_NETBSD_SOURCE)

#ifndef __LIBC12_SOURCE__

#if !defined(__minix)

int mount(const char *, const char *, int, void *, size_t) __RENAME(__mount50);

#else

int minix_mount(char *_spec, char *_name, int _mountflags, int srvflags, char *type,

        char *args);

#endif /* !defined(__minix) */

int        fhopen(const void *, size_t, int) __RENAME(__fhopen40);

int        fhstat(const void *, size_t, struct stat *) __RENAME(__fhstat50);

#endif

#endif /* _NETBSD_SOURCE */

__END_DECLS

#endif /* _KERNEL */

#endif /* !_STANDALONE */

#if defined(__minix) && !defined(_STANDALONE)

/* Service flags. These are not passed to VFS. */

#define MS_REUSE        0x001        /* Tell RS to try reusing binary from memory */

#define MS_EXISTING        0x002        /* Tell mount to use already running server */

#define MNT_LABEL_LEN        16        /* Length of fs label including nul */

/* Legacy definitions. */

#define MNTNAMELEN        16        /* Length of fs type name including nul */

#define MNTFLAGLEN        64        /* Length of flags string including nul */

#endif /*  defined(__minix) && !defined(_STANDALONE) */

#endif /* !_SYS_MOUNT_H_ */