File: [local] / src / sys / sys / mount.h (download)
Revision 1.151, Sat Feb 3 18:51:58 2024 UTC (4 months ago) by beck
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, HEAD
Changes since 1.150: +1 -2 lines
Remove Softdep.
Softdep has been a no-op for some time now, this removes it to get
it out of the way.
Flensing mostly done in Talinn, with some help from krw@
ok deraadt@
|
/* $OpenBSD: mount.h,v 1.151 2024/02/03 18:51:58 beck 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\021UPDATE" \
"\022DELEXPORT\023RELOAD\024FORCE\025STALLED\026SWAPPABLE\032WANTRDWR" \
"\033SOFTDEP\034DOOMED"
/*
* 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 - now ignored */
#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);
/* 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 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_ */
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