/* $OpenBSD: mount.h,v 1.147 2020/01/18 08:40:19 visa Exp $ */ /* $NetBSD: mount.h,v 1.48 1996/02/18 11:55:47 fvdl 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 8.15 (Berkeley) 7/14/94 */ #ifndef _SYS_MOUNT_H_ #define _SYS_MOUNT_H_ #include #ifndef _KERNEL #include #endif #include #include typedef struct { int32_t val[2]; } fsid_t; /* file system id type */ /* * File identifier. * These are unique per filesystem on a single machine. */ #define MAXFIDSZ 16 struct fid { u_short fid_len; /* length of data in bytes */ u_short fid_reserved; /* force longword alignment */ char fid_data[MAXFIDSZ]; /* data (variable length) */ }; /* * Export arguments for local filesystem mount calls. */ struct export_args { int ex_flags; /* export related flags */ uid_t ex_root; /* mapping for root uid */ struct xucred 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 */ }; /* * Arguments to mount UFS-based filesystems */ struct ufs_args { char *fspec; /* block special device to mount */ struct export_args export_info;/* network export information */ }; /* * Arguments to mount MFS */ struct mfs_args { char *fspec; /* name to export for statfs */ struct export_args export_info;/* if exported MFSes are supported */ caddr_t base; /* base of file system in memory */ u_long size; /* size of file system */ }; /* * Arguments to mount ISO 9660 filesystems. */ struct iso_args { char *fspec; /* block special device to mount */ struct export_args export_info;/* network export info */ int flags; /* mounting flags, see below */ int sess; /* start sector of session */ }; #define ISOFSMNT_NORRIP 0x00000001 /* disable Rock Ridge Ext.*/ #define ISOFSMNT_GENS 0x00000002 /* enable generation numbers */ #define ISOFSMNT_EXTATT 0x00000004 /* enable extended attr. */ #define ISOFSMNT_NOJOLIET 0x00000008 /* disable Joliet Ext.*/ #define ISOFSMNT_SESS 0x00000010 /* use iso_args.sess */ /* * Arguments to mount NFS */ #define NFS_ARGSVERSION 4 /* change when nfs_args changes */ struct nfs_args { int version; /* args structure version number */ struct sockaddr *addr; /* file server address */ int addrlen; /* length of address */ int sotype; /* Socket type */ int proto; /* and Protocol */ u_char *fh; /* File handle to be mounted */ int fhsize; /* Size, in bytes, of fh */ int flags; /* flags */ int wsize; /* write size in bytes */ int rsize; /* read size in bytes */ int readdirsize; /* readdir size in bytes */ int timeo; /* initial timeout in .1 secs */ int retrans; /* times to retry send */ int maxgrouplist; /* Max. size of group list */ int readahead; /* # of blocks to readahead */ int leaseterm; /* Term (sec) of lease */ int deadthresh; /* Retrans threshold */ char *hostname; /* server's name */ int acregmin; /* Attr cache file recently modified */ int acregmax; /* ac file not recently modified */ int acdirmin; /* ac for dir recently modified */ int acdirmax; /* ac for dir not recently modified */ }; /* * NFS mount option flags */ #define NFSMNT_RESVPORT 0x00000000 /* always use reserved ports */ #define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */ #define NFSMNT_WSIZE 0x00000002 /* set write size */ #define NFSMNT_RSIZE 0x00000004 /* set read size */ #define NFSMNT_TIMEO 0x00000008 /* set initial timeout */ #define NFSMNT_RETRANS 0x00000010 /* set number of request retries */ #define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */ #define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */ #define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */ #define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */ #define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */ #define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */ #define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */ #define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */ #define NFSMNT_READAHEAD 0x00002000 /* set read ahead */ #define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */ #define NFSMNT_NOAC 0x00008000 /* disable attribute cache */ #define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */ #define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */ /* Flags valid only in mount syscall arguments */ #define NFSMNT_ACREGMIN 0x00040000 /* acregmin field valid */ #define NFSMNT_ACREGMAX 0x00080000 /* acregmax field valid */ #define NFSMNT_ACDIRMIN 0x00100000 /* acdirmin field valid */ #define NFSMNT_ACDIRMAX 0x00200000 /* acdirmax field valid */ /* Flags valid only in kernel */ #define NFSMNT_INTERNAL 0xfffc0000 /* Bits set internally */ #define NFSMNT_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */ #define NFSMNT_GOTPATHCONF 0x00080000 /* Got the V3 pathconf info */ #define NFSMNT_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */ #define NFSMNT_MNTD 0x00200000 /* Mnt server for mnt point */ #define NFSMNT_DISMINPROG 0x00400000 /* Dismount in progress */ #define NFSMNT_DISMNT 0x00800000 /* Dismounted */ #define NFSMNT_SNDLOCK 0x01000000 /* Send socket lock */ #define NFSMNT_WANTSND 0x02000000 /* Want above */ #define NFSMNT_RCVLOCK 0x04000000 /* Rcv socket lock */ #define NFSMNT_WANTRCV 0x08000000 /* Want above */ #define NFSMNT_WAITAUTH 0x10000000 /* Wait for authentication */ #define NFSMNT_HASAUTH 0x20000000 /* Has authenticator */ #define NFSMNT_WANTAUTH 0x40000000 /* Wants an authenticator */ #define NFSMNT_AUTHERR 0x80000000 /* Authentication error */ /* * Arguments to mount MSDOS filesystems. */ struct msdosfs_args { char *fspec; /* blocks special holding the fs to mount */ struct export_args export_info; /* network export information */ uid_t uid; /* uid that owns msdosfs files */ gid_t gid; /* gid that owns msdosfs files */ mode_t mask; /* mask to be applied for msdosfs perms */ int flags; /* see below */ }; /* * Msdosfs mount options: */ #define MSDOSFSMNT_SHORTNAME 0x01 /* Force old DOS short names only */ #define MSDOSFSMNT_LONGNAME 0x02 /* Force Win'95 long names */ #define MSDOSFSMNT_NOWIN95 0x04 /* Completely ignore Win95 entries */ /* * Arguments to mount ntfs filesystems */ struct ntfs_args { char *fspec; /* block special device to mount */ struct export_args export_info;/* network export information */ uid_t uid; /* uid that owns ntfs files */ gid_t gid; /* gid that owns ntfs files */ mode_t mode; /* mask to be applied for ntfs perms */ u_long flag; /* additional flags */ }; /* * ntfs mount options: */ #define NTFS_MFLAG_CASEINS 0x00000001 #define NTFS_MFLAG_ALLNAMES 0x00000002 /* Arguments to mount UDF file systems */ struct udf_args { char *fspec; /* Block special device to mount */ u_int32_t lastblock; /* Special device last block */ }; /* * Arguments to mount tmpfs file systems */ #define TMPFS_ARGS_VERSION 1 struct tmpfs_args { int ta_version; /* Size counters. */ ino_t ta_nodes_max; off_t ta_size_max; /* Root node attributes. */ uid_t ta_root_uid; gid_t ta_root_gid; mode_t ta_root_mode; }; /* * Arguments to mount fusefs filesystems */ struct fusefs_args { char *name; int fd; int max_read; /* * FUSE does not allow the file system to be accessed by other users * unless this option is specified. This is to prevent unintentional * denial of service to other users if the file system is not * responding. e.g. user executes df(1) or cron job that scans mounted * file systems. */ int allow_other; }; /* * file system statistics */ #define MFSNAMELEN 16 /* length of fs type name, including nul */ #define MNAMELEN 90 /* length of buffer for returned name */ /* per-filesystem mount options */ union mount_info { struct ufs_args ufs_args; struct mfs_args mfs_args; struct nfs_args nfs_args; struct iso_args iso_args; struct msdosfs_args msdosfs_args; struct ntfs_args ntfs_args; struct tmpfs_args tmpfs_args; char __align[160]; /* 64-bit alignment and room to grow */ }; /* new statfs structure with mount options and statvfs fields */ struct statfs { u_int32_t f_flags; /* copy of mount flags */ u_int32_t f_bsize; /* file system block size */ u_int32_t f_iosize; /* optimal transfer block size */ /* unit is f_bsize */ u_int64_t f_blocks; /* total data blocks in file system */ u_int64_t f_bfree; /* free blocks in fs */ int64_t f_bavail; /* free blocks avail to non-superuser */ u_int64_t f_files; /* total file nodes in file system */ u_int64_t f_ffree; /* free file nodes in fs */ int64_t f_favail; /* free file nodes avail to non-root */ u_int64_t f_syncwrites; /* count of sync writes since mount */ u_int64_t f_syncreads; /* count of sync reads since mount */ u_int64_t f_asyncwrites; /* count of async writes since mount */ u_int64_t f_asyncreads; /* count of async reads since mount */ fsid_t f_fsid; /* file system id */ u_int32_t f_namemax; /* maximum filename length */ uid_t f_owner; /* user that mounted the file system */ u_int64_t f_ctime; /* last mount [-u] time */ char f_fstypename[MFSNAMELEN]; /* fs type name */ char f_mntonname[MNAMELEN]; /* directory on which mounted */ char f_mntfromname[MNAMELEN]; /* mounted file system */ char f_mntfromspec[MNAMELEN]; /* special for mount request */ union mount_info mount_info; /* per-filesystem mount options */ }; /* * 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_AFS "afs" /* Andrew Filesystem */ #define MOUNT_CD9660 "cd9660" /* ISO9660 (aka CDROM) Filesystem */ #define MOUNT_EXT2FS "ext2fs" /* Second Extended Filesystem */ #define MOUNT_NCPFS "ncpfs" /* NetWare Network File System */ #define MOUNT_NTFS "ntfs" /* NTFS */ #define MOUNT_UDF "udf" /* UDF */ #define MOUNT_TMPFS "tmpfs" /* tmpfs */ #define MOUNT_FUSEFS "fuse" /* FUSE */ /* * 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 */ SLIST_ENTRY(mount) mnt_dounmount; /* unmount work queue */ const struct vfsops *mnt_op; /* operations on fs */ struct vfsconf *mnt_vfc; /* configuration info */ struct vnode *mnt_vnodecovered; /* vnode we mounted on */ struct vnode *mnt_syncer; /* syncer vnode */ TAILQ_HEAD(, vnode) mnt_vnodelist; /* list of vnodes this mount */ struct rwlock mnt_lock; /* mount structure lock */ int mnt_flag; /* flags */ struct statfs mnt_stat; /* cache of filesystem stats */ void *mnt_data; /* private data */ }; /* * Mount flags. * * Unmount uses MNT_FORCE flag. */ #define MNT_RDONLY 0x00000001 /* read only filesystem */ #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ #define MNT_NODEV 0x00000010 /* don't interpret special files */ #define MNT_NOPERM 0x00000020 /* don't enforce permission checks */ #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ #define MNT_WXALLOWED 0x00000800 /* filesystem allows W|X mappings */ /* * exported mount flags. */ #define MNT_EXRDONLY 0x00000080 /* exported read only */ #define MNT_EXPORTED 0x00000100 /* file system is exported */ #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ /* * Flags set by internal operations. */ #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ /* * Extra post 4.4BSD-lite2 mount flags. */ #define MNT_NOATIME 0x00008000 /* don't update access times on fs */ /* * Mask of flags that are visible to statfs() */ #define MNT_VISFLAGMASK 0x0400ffff #define MNT_BITS \ "\20\001RDONLY\002SYNCHRONOUS\003NOEXEC\004NOSUID\005NODEV\006NOPERM" \ "\007ASYNC\010EXRDONLY\011EXPORTED\012DEFEXPORTED\013EXPORTANON" \ "\014WXALLOWED\015LOCAL\016QUOTA\017ROOTFS\020NOATIME" /* * filesystem control flags. */ #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ #define MNT_RELOAD 0x00040000 /* reload filesystem data */ #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ #define MNT_STALLED 0x00100000 /* filesystem stalled */ #define MNT_SWAPPABLE 0x00200000 /* filesystem can be used for swap */ #define MNT_WANTRDWR 0x02000000 /* want upgrade to read/write */ #define MNT_SOFTDEP 0x04000000 /* soft dependencies being done */ #define MNT_DOOMED 0x08000000 /* device behind filesystem is gone */ #ifdef _KERNEL #define MNT_OP_FLAGS (MNT_UPDATE | MNT_RELOAD | MNT_FORCE | MNT_WANTRDWR) #endif /* * Flags for various system call interfaces. * * waitfor flags to vfs_sync() and getfsstat() */ #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ #define MNT_LAZY 3 /* push data not written by filesystem syncer */ /* * Generic file handle */ struct fhandle { fsid_t fh_fsid; /* File system id of mount point */ struct fid fh_fid; /* File sys specific id */ }; typedef struct fhandle fhandle_t; /* * Sysctl CTL_VFS definitions. * * Second level identifier specifies which filesystem. Second level * identifier VFS_GENERIC returns information about all filesystems. */ #define VFS_GENERIC 0 /* generic filesystem information */ /* * Third level identifiers for VFS_GENERIC are given below; third * level identifiers for specific filesystems are given in their * mount specific header files. */ #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ #define VFS_CONF 2 /* struct: vfsconf for filesystem given as next argument */ #define VFS_BCACHESTAT 3 /* struct: buffer cache statistics given as next argument */ #define CTL_VFSGENCTL_NAMES { \ { 0, 0 }, \ { "maxtypenum", CTLTYPE_INT }, \ { "conf", CTLTYPE_NODE }, \ { "bcachestat", CTLTYPE_STRUCT } \ } /* * Filesystem configuration information. One of these exists for each * type of filesystem supported by the kernel. These are searched at * mount time to identify the requested filesystem. */ struct vfsconf { const struct vfsops *vfc_vfsops; /* filesystem operations vector */ char vfc_name[MFSNAMELEN]; /* filesystem type name */ int vfc_typenum; /* historic filesystem type number */ u_int vfc_refcount; /* number mounted of this type */ int vfc_flags; /* permanent flags */ size_t vfc_datasize; /* size of data args */ }; /* buffer cache statistics */ struct bcachestats { int64_t numbufs; /* number of buffers allocated */ int64_t numbufpages; /* number of pages in buffer cache */ int64_t numdirtypages; /* number of dirty free pages */ int64_t numcleanpages; /* number of clean free pages */ int64_t pendingwrites; /* number of pending writes */ int64_t pendingreads; /* number of pending reads */ int64_t numwrites; /* total writes started */ int64_t numreads; /* total reads started */ int64_t cachehits; /* total reads found in cache */ int64_t busymapped; /* number of busy and mapped buffers */ int64_t dmapages; /* dma reachable pages in buffer cache */ int64_t highpages; /* pages above dma region */ int64_t delwribufs; /* delayed write buffers */ int64_t kvaslots; /* kva slots total */ int64_t kvaslots_avail; /* available kva slots */ int64_t highflips; /* total flips to above DMA */ int64_t highflops; /* total failed flips to above DMA */ int64_t dmaflips; /* total flips from high to DMA */ }; #ifdef _KERNEL extern struct bcachestats bcstats; extern long buflowpages, bufhighpages, bufbackpages; #define BUFPAGES_DEFICIT (((buflowpages - bcstats.numbufpages) < 0) ? 0 \ : buflowpages - bcstats.numbufpages) #define BUFPAGES_INACT (((bcstats.numcleanpages - buflowpages) < 0) ? 0 \ : bcstats.numcleanpages - buflowpages) extern int bufcachepercent; extern void bufadjust(int); struct uvm_constraint_range; extern int bufbackoff(struct uvm_constraint_range*, long); /* * Operations supported on mounted file system. */ struct nameidata; struct mbuf; extern int maxvfsconf; /* highest defined filesystem type */ struct vfsops { int (*vfs_mount)(struct mount *mp, const char *path, void *data, struct nameidata *ndp, struct proc *p); int (*vfs_start)(struct mount *mp, int flags, struct proc *p); int (*vfs_unmount)(struct mount *mp, int mntflags, struct proc *p); int (*vfs_root)(struct mount *mp, struct vnode **vpp); int (*vfs_quotactl)(struct mount *mp, int cmds, uid_t uid, caddr_t arg, struct proc *p); int (*vfs_statfs)(struct mount *mp, struct statfs *sbp, struct proc *p); int (*vfs_sync)(struct mount *mp, int waitfor, int stall, struct ucred *cred, struct proc *p); int (*vfs_vget)(struct mount *mp, ino_t ino, struct vnode **vpp); int (*vfs_fhtovp)(struct mount *mp, struct fid *fhp, struct vnode **vpp); int (*vfs_vptofh)(struct vnode *vp, struct fid *fhp); int (*vfs_init)(struct vfsconf *); int (*vfs_sysctl)(int *, u_int, void *, size_t *, void *, size_t, struct proc *); int (*vfs_checkexp)(struct mount *mp, struct mbuf *nam, int *extflagsp, struct ucred **credanonp); }; #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) #define VFS_SYNC(MP, W, S, C, P) (*(MP)->mnt_op->vfs_sync)(MP, W, S, C, P) #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) #define VFS_FHTOVP(MP, FIDP, VPP) \ (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) /* Set up the filesystem operations for vnodes. */ extern const struct vfsops ffs_vfsops; extern const struct vfsops mfs_vfsops; extern const struct vfsops msdosfs_vfsops; extern const struct vfsops nfs_vfsops; extern const struct vfsops cd9660_vfsops; extern const struct vfsops ext2fs_vfsops; extern const struct vfsops ntfs_vfsops; extern const struct vfsops udf_vfsops; extern const struct vfsops fusefs_vfsops; extern const struct vfsops tmpfs_vfsops; #include #include /* XXX for AF_MAX */ /* * Network address lookup element */ struct netcred { struct radix_node netc_rnodes[2]; int netc_exflags; int netc_len; /* size of the allocation */ struct ucred netc_anon; }; /* * Network export information */ struct netexport { struct netcred ne_defexported; /* Default export */ struct radix_node_head *ne_rtable_inet;/* Individual exports */ }; /* * exported vnode operations */ int vfs_busy(struct mount *, int); #define VB_READ 0x01 #define VB_WRITE 0x02 #define VB_NOWAIT 0x04 /* immediately fail on busy lock */ #define VB_WAIT 0x08 /* sleep fail on busy lock */ #define VB_DUPOK 0x10 /* permit duplicate mount busying */ int vfs_isbusy(struct mount *); struct mount *vfs_mount_alloc(struct vnode *, struct vfsconf *); void vfs_mount_free(struct mount *); int vfs_mount_foreach_vnode(struct mount *, int (*func)(struct vnode *, void *), void *); void vfs_getnewfsid(struct mount *); struct mount *vfs_getvfs(fsid_t *); int vfs_mountedon(struct vnode *); int vfs_rootmountalloc(char *, char *, struct mount **); void vfs_unbusy(struct mount *); extern TAILQ_HEAD(mntlist, mount) mountlist; int vfs_stall(struct proc *, int); void vfs_stall_barrier(void); struct mount *getvfs(fsid_t *); /* return vfs given fsid */ /* process mount export info */ int vfs_export(struct mount *, struct netexport *, struct export_args *); /* lookup host in fs export list */ struct netcred *vfs_export_lookup(struct mount *, struct netexport *, struct mbuf *); int vfs_allocate_syncvnode(struct mount *); int speedup_syncer(void); int vfs_syncwait(struct proc *, int); /* sync and wait for complete */ void vfs_shutdown(struct proc *); /* unmount and sync file systems */ int dounmount(struct mount *, int, struct proc *); void vfsinit(void); struct vfsconf *vfs_byname(const char *); struct vfsconf *vfs_bytypenum(int); #else /* _KERNEL */ __BEGIN_DECLS int fstatfs(int, struct statfs *); int getfh(const char *, fhandle_t *); int getfsstat(struct statfs *, size_t, int); int getmntinfo(struct statfs **, int); int mount(const char *, const char *, int, void *); int statfs(const char *, struct statfs *); int unmount(const char *, int); #if __BSD_VISIBLE struct stat; int fhopen(const fhandle_t *, int); int fhstat(const fhandle_t *, struct stat *); int fhstatfs(const fhandle_t *, struct statfs *); #endif /* __BSD_VISIBLE */ __END_DECLS #endif /* _KERNEL */ #endif /* !_SYS_MOUNT_H_ */