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Diffstat (limited to 'sys/sys/mount.h')
| -rw-r--r-- | sys/sys/mount.h | 637 |
1 files changed, 637 insertions, 0 deletions
diff --git a/sys/sys/mount.h b/sys/sys/mount.h new file mode 100644 index 0000000..cdf31d3 --- /dev/null +++ b/sys/sys/mount.h @@ -0,0 +1,637 @@ +/* $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 <sys/cdefs.h> +#ifndef _KERNEL +#include <sys/ucred.h> +#endif +#include <sys/queue.h> +#include <sys/rwlock.h> + +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 <net/radix.h> +#include <sys/socket.h> /* 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_ */ |