Remove unused header.
MFC after: 3 days
This commit is contained in:
parent
a33b7a8f5f
commit
232a80f675
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=173374
@ -1,569 +0,0 @@
|
||||
/*
|
||||
* CDDL HEADER START
|
||||
*
|
||||
* The contents of this file are subject to the terms of the
|
||||
* Common Development and Distribution License (the "License").
|
||||
* You may not use this file except in compliance with the License.
|
||||
*
|
||||
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
* or http://www.opensolaris.org/os/licensing.
|
||||
* See the License for the specific language governing permissions
|
||||
* and limitations under the License.
|
||||
*
|
||||
* When distributing Covered Code, include this CDDL HEADER in each
|
||||
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
* If applicable, add the following below this CDDL HEADER, with the
|
||||
* fields enclosed by brackets "[]" replaced with your own identifying
|
||||
* information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
*
|
||||
* CDDL HEADER END
|
||||
*/
|
||||
/*
|
||||
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
||||
* Use is subject to license terms.
|
||||
*/
|
||||
|
||||
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
|
||||
/* All Rights Reserved */
|
||||
|
||||
/*
|
||||
* Portions of this source code were derived from Berkeley 4.3 BSD
|
||||
* under license from the Regents of the University of California.
|
||||
*/
|
||||
|
||||
#ifndef _SYS_VFS_H
|
||||
#define _SYS_VFS_H
|
||||
|
||||
#pragma ident "%Z%%M% %I% %E% SMI"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/t_lock.h>
|
||||
#include <sys/cred.h>
|
||||
#include <sys/vnode.h>
|
||||
#include <sys/statvfs.h>
|
||||
#include <sys/refstr.h>
|
||||
#include <sys/avl.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Data associated with mounted file systems.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Operations vector. This is used internal to the kernel; file systems
|
||||
* supply their list of operations via vfs_setfsops().
|
||||
*/
|
||||
|
||||
typedef struct vfsops vfsops_t;
|
||||
|
||||
/*
|
||||
* File system identifier. Should be unique (at least per machine).
|
||||
*/
|
||||
typedef struct {
|
||||
int val[2]; /* file system id type */
|
||||
} fsid_t;
|
||||
|
||||
/*
|
||||
* File identifier. Should be unique per filesystem on a single
|
||||
* machine. This is typically called by a stateless file server
|
||||
* in order to generate "file handles".
|
||||
*
|
||||
* Do not change the definition of struct fid ... fid_t without
|
||||
* letting the CacheFS group know about it! They will have to do at
|
||||
* least two things, in the same change that changes this structure:
|
||||
* 1. change CFSVERSION in usr/src/uts/common/sys/fs/cachefs_fs.h
|
||||
* 2. put the old version # in the canupgrade array
|
||||
* in cachfs_upgrade() in usr/src/cmd/fs.d/cachefs/fsck/fsck.c
|
||||
* This is necessary because CacheFS stores FIDs on disk.
|
||||
*
|
||||
* Many underlying file systems cast a struct fid into other
|
||||
* file system dependent structures which may require 4 byte alignment.
|
||||
* Because a fid starts with a short it may not be 4 byte aligned, the
|
||||
* fid_pad will force the alignment.
|
||||
*/
|
||||
#define MAXFIDSZ 64
|
||||
#define OLD_MAXFIDSZ 16
|
||||
|
||||
typedef struct fid {
|
||||
union {
|
||||
long fid_pad;
|
||||
struct {
|
||||
ushort_t len; /* length of data in bytes */
|
||||
char data[MAXFIDSZ]; /* data (variable len) */
|
||||
} _fid;
|
||||
} un;
|
||||
} fid_t;
|
||||
|
||||
#ifdef _SYSCALL32
|
||||
/*
|
||||
* Solaris 64 - use old-style cache format with 32-bit aligned fid for on-disk
|
||||
* struct compatibility.
|
||||
*/
|
||||
typedef struct fid32 {
|
||||
union {
|
||||
int32_t fid_pad;
|
||||
struct {
|
||||
uint16_t len; /* length of data in bytes */
|
||||
char data[MAXFIDSZ]; /* data (variable len) */
|
||||
} _fid;
|
||||
} un;
|
||||
} fid32_t;
|
||||
#else /* not _SYSCALL32 */
|
||||
#define fid32 fid
|
||||
typedef fid_t fid32_t;
|
||||
#endif /* _SYSCALL32 */
|
||||
|
||||
#define fid_len un._fid.len
|
||||
#define fid_data un._fid.data
|
||||
|
||||
/*
|
||||
* Structure defining a mount option for a filesystem.
|
||||
* option names are found in mntent.h
|
||||
*/
|
||||
typedef struct mntopt {
|
||||
char *mo_name; /* option name */
|
||||
char **mo_cancel; /* list of options cancelled by this one */
|
||||
char *mo_arg; /* argument string for this option */
|
||||
int mo_flags; /* flags for this mount option */
|
||||
void *mo_data; /* filesystem specific data */
|
||||
} mntopt_t;
|
||||
|
||||
/*
|
||||
* Flags that apply to mount options
|
||||
*/
|
||||
|
||||
#define MO_SET 0x01 /* option is set */
|
||||
#define MO_NODISPLAY 0x02 /* option not listed in mnttab */
|
||||
#define MO_HASVALUE 0x04 /* option takes a value */
|
||||
#define MO_IGNORE 0x08 /* option ignored by parser */
|
||||
#define MO_DEFAULT MO_SET /* option is on by default */
|
||||
#define MO_TAG 0x10 /* flags a tag set by user program */
|
||||
#define MO_EMPTY 0x20 /* empty space in option table */
|
||||
|
||||
#define VFS_NOFORCEOPT 0x01 /* honor MO_IGNORE (don't set option) */
|
||||
#define VFS_DISPLAY 0x02 /* Turn off MO_NODISPLAY bit for opt */
|
||||
#define VFS_NODISPLAY 0x04 /* Turn on MO_NODISPLAY bit for opt */
|
||||
#define VFS_CREATEOPT 0x08 /* Create the opt if it's not there */
|
||||
|
||||
/*
|
||||
* Structure holding mount option strings for the mounted file system.
|
||||
*/
|
||||
typedef struct mntopts {
|
||||
uint_t mo_count; /* number of entries in table */
|
||||
mntopt_t *mo_list; /* list of mount options */
|
||||
} mntopts_t;
|
||||
|
||||
/*
|
||||
* The kstat structures associated with the vopstats are kept in an
|
||||
* AVL tree. This is to avoid the case where a file system does not
|
||||
* use a unique fsid_t for each vfs (e.g., namefs). In order to do
|
||||
* this, we need a structure that the AVL tree can use that also
|
||||
* references the kstat.
|
||||
* Note that the vks_fsid is generated from the value reported by
|
||||
* VFS_STATVFS().
|
||||
*/
|
||||
typedef struct vskstat_anchor {
|
||||
avl_node_t vsk_node; /* Required for use by AVL routines */
|
||||
kstat_t *vsk_ksp; /* kstat structure for vopstats */
|
||||
ulong_t vsk_fsid; /* fsid associated w/this FS */
|
||||
} vsk_anchor_t;
|
||||
|
||||
extern avl_tree_t vskstat_tree;
|
||||
extern kmutex_t vskstat_tree_lock;
|
||||
|
||||
/*
|
||||
* Structure per mounted file system. Each mounted file system has
|
||||
* an array of operations and an instance record.
|
||||
*
|
||||
* The file systems are kept on a doubly linked circular list headed by
|
||||
* "rootvfs".
|
||||
* File system implementations should not access this list;
|
||||
* it's intended for use only in the kernel's vfs layer.
|
||||
*
|
||||
* Each zone also has its own list of mounts, containing filesystems mounted
|
||||
* somewhere within the filesystem tree rooted at the zone's rootpath. The
|
||||
* list is doubly linked to match the global list.
|
||||
*
|
||||
* mnttab locking: the in-kernel mnttab uses the vfs_mntpt, vfs_resource and
|
||||
* vfs_mntopts fields in the vfs_t. mntpt and resource are refstr_ts that
|
||||
* are set at mount time and can only be modified during a remount.
|
||||
* It is safe to read these fields if you can prevent a remount on the vfs,
|
||||
* or through the convenience funcs vfs_getmntpoint() and vfs_getresource().
|
||||
* The mntopts field may only be accessed through the provided convenience
|
||||
* functions, as it is protected by the vfs list lock. Modifying a mount
|
||||
* option requires grabbing the vfs list write lock, which can be a very
|
||||
* high latency lock.
|
||||
*/
|
||||
struct zone; /* from zone.h */
|
||||
struct fem_head; /* from fem.h */
|
||||
|
||||
/*
|
||||
* Private vfs data, NOT to be used by a file system implementation.
|
||||
*/
|
||||
typedef struct vfs_impl {
|
||||
struct fem_head *vi_femhead; /* fs monitoring */
|
||||
/*
|
||||
* Support for statistics on the vnode operations
|
||||
*/
|
||||
vsk_anchor_t *vi_vskap; /* anchor for vopstats' kstat */
|
||||
vopstats_t *vi_fstypevsp; /* ptr to per-fstype vopstats */
|
||||
vopstats_t vi_vopstats; /* per-mount vnode op stats */
|
||||
} vfs_impl_t;
|
||||
|
||||
typedef struct vfs {
|
||||
struct vfs *vfs_next; /* next VFS in VFS list */
|
||||
struct vfs *vfs_prev; /* prev VFS in VFS list */
|
||||
|
||||
/* vfs_op should not be used directly. Accessor functions are provided */
|
||||
vfsops_t *vfs_op; /* operations on VFS */
|
||||
|
||||
struct vnode *vfs_vnodecovered; /* vnode mounted on */
|
||||
uint_t vfs_flag; /* flags */
|
||||
uint_t vfs_bsize; /* native block size */
|
||||
int vfs_fstype; /* file system type index */
|
||||
fsid_t vfs_fsid; /* file system id */
|
||||
void *vfs_data; /* private data */
|
||||
dev_t vfs_dev; /* device of mounted VFS */
|
||||
ulong_t vfs_bcount; /* I/O count (accounting) */
|
||||
struct vfs *vfs_list; /* sync list pointer */
|
||||
struct vfs *vfs_hash; /* hash list pointer */
|
||||
ksema_t vfs_reflock; /* mount/unmount/sync lock */
|
||||
uint_t vfs_count; /* vfs reference count */
|
||||
mntopts_t vfs_mntopts; /* options mounted with */
|
||||
refstr_t *vfs_resource; /* mounted resource name */
|
||||
refstr_t *vfs_mntpt; /* mount point name */
|
||||
time_t vfs_mtime; /* time we were mounted */
|
||||
vfs_impl_t *vfs_implp; /* impl specific data */
|
||||
/*
|
||||
* Zones support. Note that the zone that "owns" the mount isn't
|
||||
* necessarily the same as the zone in which the zone is visible.
|
||||
* That is, vfs_zone and (vfs_zone_next|vfs_zone_prev) may refer to
|
||||
* different zones.
|
||||
*/
|
||||
struct zone *vfs_zone; /* zone that owns the mount */
|
||||
struct vfs *vfs_zone_next; /* next VFS visible in zone */
|
||||
struct vfs *vfs_zone_prev; /* prev VFS visible in zone */
|
||||
} vfs_t;
|
||||
|
||||
#define vfs_femhead vfs_implp->vi_femhead
|
||||
#define vfs_vskap vfs_implp->vi_vskap
|
||||
#define vfs_fstypevsp vfs_implp->vi_fstypevsp
|
||||
#define vfs_vopstats vfs_implp->vi_vopstats
|
||||
|
||||
/*
|
||||
* VFS flags.
|
||||
*/
|
||||
#define VFS_RDONLY 0x01 /* read-only vfs */
|
||||
#define VFS_NOMNTTAB 0x02 /* vfs not seen in mnttab */
|
||||
#define VFS_NOSETUID 0x08 /* setuid disallowed */
|
||||
#define VFS_REMOUNT 0x10 /* modify mount options only */
|
||||
#define VFS_NOTRUNC 0x20 /* does not truncate long file names */
|
||||
#define VFS_UNLINKABLE 0x40 /* unlink(2) can be applied to root */
|
||||
#define VFS_PXFS 0x80 /* clustering: global fs proxy vfs */
|
||||
#define VFS_UNMOUNTED 0x100 /* file system has been unmounted */
|
||||
#define VFS_NBMAND 0x200 /* allow non-blocking mandatory locks */
|
||||
#define VFS_XATTR 0x400 /* fs supports extended attributes */
|
||||
#define VFS_NODEVICES 0x800 /* device-special files disallowed */
|
||||
#define VFS_NOEXEC 0x1000 /* executables disallowed */
|
||||
#define VFS_STATS 0x2000 /* file system can collect stats */
|
||||
|
||||
#define VFS_NORESOURCE "unspecified_resource"
|
||||
#define VFS_NOMNTPT "unspecified_mountpoint"
|
||||
|
||||
/*
|
||||
* Argument structure for mount(2).
|
||||
*
|
||||
* Flags are defined in <sys/mount.h>.
|
||||
*
|
||||
* Note that if the MS_SYSSPACE bit is set in flags, the pointer fields in
|
||||
* this structure are to be interpreted as kernel addresses. File systems
|
||||
* should be prepared for this possibility.
|
||||
*/
|
||||
struct mounta {
|
||||
char *spec;
|
||||
char *dir;
|
||||
int flags;
|
||||
char *fstype;
|
||||
char *dataptr;
|
||||
int datalen;
|
||||
char *optptr;
|
||||
int optlen;
|
||||
};
|
||||
|
||||
/*
|
||||
* Reasons for calling the vfs_mountroot() operation.
|
||||
*/
|
||||
enum whymountroot { ROOT_INIT, ROOT_REMOUNT, ROOT_UNMOUNT};
|
||||
typedef enum whymountroot whymountroot_t;
|
||||
|
||||
/*
|
||||
* Reasons for calling the VFS_VNSTATE():
|
||||
*/
|
||||
enum vntrans {
|
||||
VNTRANS_EXISTS,
|
||||
VNTRANS_IDLED,
|
||||
VNTRANS_RECLAIMED,
|
||||
VNTRANS_DESTROYED
|
||||
};
|
||||
typedef enum vntrans vntrans_t;
|
||||
|
||||
/*
|
||||
* VFS_OPS defines all the vfs operations. It is used to define
|
||||
* the vfsops structure (below) and the fs_func_p union (vfs_opreg.h).
|
||||
*/
|
||||
#define VFS_OPS \
|
||||
int (*vfs_mount)(vfs_t *, vnode_t *, struct mounta *, cred_t *); \
|
||||
int (*vfs_unmount)(vfs_t *, int, cred_t *); \
|
||||
int (*vfs_root)(vfs_t *, vnode_t **); \
|
||||
int (*vfs_statvfs)(vfs_t *, statvfs64_t *); \
|
||||
int (*vfs_sync)(vfs_t *, short, cred_t *); \
|
||||
int (*vfs_vget)(vfs_t *, vnode_t **, fid_t *); \
|
||||
int (*vfs_mountroot)(vfs_t *, enum whymountroot); \
|
||||
void (*vfs_freevfs)(vfs_t *); \
|
||||
int (*vfs_vnstate)(vfs_t *, vnode_t *, vntrans_t) /* NB: No ";" */
|
||||
|
||||
/*
|
||||
* Operations supported on virtual file system.
|
||||
*/
|
||||
struct vfsops {
|
||||
VFS_OPS; /* Signature of all vfs operations (vfsops) */
|
||||
};
|
||||
|
||||
extern int fsop_mount(vfs_t *, vnode_t *, struct mounta *, cred_t *);
|
||||
extern int fsop_unmount(vfs_t *, int, cred_t *);
|
||||
extern int fsop_root(vfs_t *, vnode_t **);
|
||||
extern int fsop_statfs(vfs_t *, statvfs64_t *);
|
||||
extern int fsop_sync(vfs_t *, short, cred_t *);
|
||||
extern int fsop_vget(vfs_t *, vnode_t **, fid_t *);
|
||||
extern int fsop_mountroot(vfs_t *, enum whymountroot);
|
||||
extern void fsop_freefs(vfs_t *);
|
||||
extern int fsop_sync_by_kind(int, short, cred_t *);
|
||||
extern int fsop_vnstate(vfs_t *, vnode_t *, vntrans_t);
|
||||
|
||||
#define VFS_MOUNT(vfsp, mvp, uap, cr) fsop_mount(vfsp, mvp, uap, cr)
|
||||
#define VFS_UNMOUNT(vfsp, flag, cr) fsop_unmount(vfsp, flag, cr)
|
||||
#define VFS_ROOT(vfsp, vpp) fsop_root(vfsp, vpp)
|
||||
#define VFS_STATVFS(vfsp, sp) fsop_statfs(vfsp, sp)
|
||||
#define VFS_SYNC(vfsp, flag, cr) fsop_sync(vfsp, flag, cr)
|
||||
#define VFS_VGET(vfsp, vpp, fidp) fsop_vget(vfsp, vpp, fidp)
|
||||
#define VFS_MOUNTROOT(vfsp, init) fsop_mountroot(vfsp, init)
|
||||
#define VFS_FREEVFS(vfsp) fsop_freefs(vfsp)
|
||||
#define VFS_VNSTATE(vfsp, vn, ns) fsop_vnstate(vfsp, vn, ns)
|
||||
|
||||
#define VFSNAME_MOUNT "mount"
|
||||
#define VFSNAME_UNMOUNT "unmount"
|
||||
#define VFSNAME_ROOT "root"
|
||||
#define VFSNAME_STATVFS "statvfs"
|
||||
#define VFSNAME_SYNC "sync"
|
||||
#define VFSNAME_VGET "vget"
|
||||
#define VFSNAME_MOUNTROOT "mountroot"
|
||||
#define VFSNAME_FREEVFS "freevfs"
|
||||
#define VFSNAME_VNSTATE "vnstate"
|
||||
/*
|
||||
* Filesystem type switch table.
|
||||
*/
|
||||
|
||||
typedef struct vfssw {
|
||||
char *vsw_name; /* type name -- max len _ST_FSTYPSZ */
|
||||
int (*vsw_init) (int, char *);
|
||||
/* init routine (for non-loadable fs only) */
|
||||
int vsw_flag; /* flags */
|
||||
mntopts_t vsw_optproto; /* mount options table prototype */
|
||||
uint_t vsw_count; /* count of references */
|
||||
kmutex_t vsw_lock; /* lock to protect vsw_count */
|
||||
vfsops_t vsw_vfsops; /* filesystem operations vector */
|
||||
} vfssw_t;
|
||||
|
||||
/*
|
||||
* Filesystem type definition record. All file systems must export a record
|
||||
* of this type through their modlfs structure.
|
||||
*/
|
||||
|
||||
typedef struct vfsdef_v3 {
|
||||
int def_version; /* structure version, must be first */
|
||||
char *name; /* filesystem type name */
|
||||
int (*init) (int, char *); /* init routine */
|
||||
int flags; /* filesystem flags */
|
||||
mntopts_t *optproto; /* mount options table prototype */
|
||||
} vfsdef_v3;
|
||||
|
||||
typedef struct vfsdef_v3 vfsdef_t;
|
||||
|
||||
enum {
|
||||
VFSDEF_VERSION = 3
|
||||
};
|
||||
|
||||
/*
|
||||
* flags for vfssw and vfsdef
|
||||
*/
|
||||
#define VSW_HASPROTO 0x01 /* struct has a mount options prototype */
|
||||
#define VSW_CANRWRO 0x02 /* file system can transition from rw to ro */
|
||||
#define VSW_CANREMOUNT 0x04 /* file system supports remounts */
|
||||
#define VSW_NOTZONESAFE 0x08 /* zone_enter(2) should fail for these files */
|
||||
#define VSW_VOLATILEDEV 0x10 /* vfs_dev can change each time fs is mounted */
|
||||
#define VSW_STATS 0x20 /* file system can collect stats */
|
||||
|
||||
#define VSW_INSTALLED 0x8000 /* this vsw is associated with a file system */
|
||||
|
||||
#if defined(_KERNEL)
|
||||
/*
|
||||
* Public operations.
|
||||
*/
|
||||
struct umounta;
|
||||
struct statvfsa;
|
||||
struct fstatvfsa;
|
||||
|
||||
void vfs_freevfsops(vfsops_t *);
|
||||
int vfs_freevfsops_by_type(int);
|
||||
void vfs_setops(vfs_t *, vfsops_t *);
|
||||
vfsops_t *vfs_getops(vfs_t *vfsp);
|
||||
int vfs_matchops(vfs_t *, vfsops_t *);
|
||||
int vfs_can_sync(vfs_t *vfsp);
|
||||
void vfs_init(vfs_t *vfsp, vfsops_t *, void *);
|
||||
void vfsimpl_setup(vfs_t *vfsp);
|
||||
void vfsimpl_teardown(vfs_t *vfsp);
|
||||
void vn_exists(vnode_t *);
|
||||
void vn_idle(vnode_t *);
|
||||
void vn_reclaim(vnode_t *);
|
||||
void vn_invalid(vnode_t *);
|
||||
|
||||
int rootconf(void);
|
||||
int svm_rootconf(void);
|
||||
int domount(char *, struct mounta *, vnode_t *, struct cred *,
|
||||
struct vfs **);
|
||||
int dounmount(struct vfs *, int, cred_t *);
|
||||
int vfs_lock(struct vfs *);
|
||||
int vfs_rlock(struct vfs *);
|
||||
void vfs_lock_wait(struct vfs *);
|
||||
void vfs_rlock_wait(struct vfs *);
|
||||
void vfs_unlock(struct vfs *);
|
||||
int vfs_lock_held(struct vfs *);
|
||||
struct _kthread *vfs_lock_owner(struct vfs *);
|
||||
void sync(void);
|
||||
void vfs_sync(int);
|
||||
void vfs_mountroot(void);
|
||||
void vfs_add(vnode_t *, struct vfs *, int);
|
||||
void vfs_remove(struct vfs *);
|
||||
|
||||
/* The following functions are not for general use by filesystems */
|
||||
|
||||
void vfs_createopttbl(mntopts_t *, const char *);
|
||||
void vfs_copyopttbl(const mntopts_t *, mntopts_t *);
|
||||
void vfs_mergeopttbl(const mntopts_t *, const mntopts_t *, mntopts_t *);
|
||||
void vfs_freeopttbl(mntopts_t *);
|
||||
void vfs_parsemntopts(mntopts_t *, char *, int);
|
||||
int vfs_buildoptionstr(const mntopts_t *, char *, int);
|
||||
struct mntopt *vfs_hasopt(const mntopts_t *, const char *);
|
||||
void vfs_mnttab_modtimeupd(void);
|
||||
|
||||
void vfs_clearmntopt(struct vfs *, const char *);
|
||||
void vfs_setmntopt(struct vfs *, const char *, const char *, int);
|
||||
void vfs_setresource(struct vfs *, const char *);
|
||||
void vfs_setmntpoint(struct vfs *, const char *);
|
||||
refstr_t *vfs_getresource(const struct vfs *);
|
||||
refstr_t *vfs_getmntpoint(const struct vfs *);
|
||||
int vfs_optionisset(const struct vfs *, const char *, char **);
|
||||
int vfs_settag(uint_t, uint_t, const char *, const char *, cred_t *);
|
||||
int vfs_clrtag(uint_t, uint_t, const char *, const char *, cred_t *);
|
||||
void vfs_syncall(void);
|
||||
void vfs_syncprogress(void);
|
||||
void vfsinit(void);
|
||||
void vfs_unmountall(void);
|
||||
void vfs_make_fsid(fsid_t *, dev_t, int);
|
||||
void vfs_addmip(dev_t, struct vfs *);
|
||||
void vfs_delmip(struct vfs *);
|
||||
int vfs_devismounted(dev_t);
|
||||
int vfs_devmounting(dev_t, struct vfs *);
|
||||
int vfs_opsinuse(vfsops_t *);
|
||||
struct vfs *getvfs(fsid_t *);
|
||||
struct vfs *vfs_dev2vfsp(dev_t);
|
||||
struct vfs *vfs_mntpoint2vfsp(const char *);
|
||||
struct vfssw *allocate_vfssw(char *);
|
||||
struct vfssw *vfs_getvfssw(char *);
|
||||
struct vfssw *vfs_getvfsswbyname(char *);
|
||||
struct vfssw *vfs_getvfsswbyvfsops(vfsops_t *);
|
||||
void vfs_refvfssw(struct vfssw *);
|
||||
void vfs_unrefvfssw(struct vfssw *);
|
||||
uint_t vf_to_stf(uint_t);
|
||||
void vfs_mnttab_modtime(timespec_t *);
|
||||
void vfs_mnttab_poll(timespec_t *, struct pollhead **);
|
||||
|
||||
void vfs_list_lock(void);
|
||||
void vfs_list_read_lock(void);
|
||||
void vfs_list_unlock(void);
|
||||
void vfs_list_add(struct vfs *);
|
||||
void vfs_list_remove(struct vfs *);
|
||||
void vfs_hold(vfs_t *vfsp);
|
||||
void vfs_rele(vfs_t *vfsp);
|
||||
void fs_freevfs(vfs_t *);
|
||||
void vfs_root_redev(vfs_t *vfsp, dev_t ndev, int fstype);
|
||||
|
||||
int vfs_zone_change_safe(vfs_t *);
|
||||
|
||||
#define VFSHASH(maj, min) (((int)((maj)+(min))) & (vfshsz - 1))
|
||||
#define VFS_ON_LIST(vfsp) \
|
||||
((vfsp)->vfs_next != (vfsp) && (vfsp)->vfs_next != NULL)
|
||||
|
||||
/*
|
||||
* Globals.
|
||||
*/
|
||||
|
||||
extern struct vfssw vfssw[]; /* table of filesystem types */
|
||||
extern krwlock_t vfssw_lock;
|
||||
extern char rootfstype[]; /* name of root fstype */
|
||||
extern const int nfstype; /* # of elements in vfssw array */
|
||||
extern vfsops_t *EIO_vfsops; /* operations for vfs being torn-down */
|
||||
|
||||
/*
|
||||
* The following variables are private to the the kernel's vfs layer. File
|
||||
* system implementations should not access them.
|
||||
*/
|
||||
extern struct vfs *rootvfs; /* ptr to root vfs structure */
|
||||
typedef struct {
|
||||
struct vfs *rvfs_head; /* head vfs in chain */
|
||||
kmutex_t rvfs_lock; /* mutex protecting this chain */
|
||||
uint32_t rvfs_len; /* length of this chain */
|
||||
} rvfs_t;
|
||||
extern rvfs_t *rvfs_list;
|
||||
extern int vfshsz; /* # of elements in rvfs_head array */
|
||||
extern const mntopts_t vfs_mntopts; /* globally recognized options */
|
||||
|
||||
#endif /* defined(_KERNEL) */
|
||||
|
||||
#define VFS_HOLD(vfsp) { \
|
||||
vfs_hold(vfsp); \
|
||||
}
|
||||
|
||||
#define VFS_RELE(vfsp) { \
|
||||
vfs_rele(vfsp); \
|
||||
}
|
||||
|
||||
#define VFS_INIT(vfsp, op, data) { \
|
||||
vfs_init((vfsp), (op), (data)); \
|
||||
vfsimpl_setup((vfsp)); \
|
||||
}
|
||||
|
||||
|
||||
#define VFS_INSTALLED(vfsswp) (((vfsswp)->vsw_flag & VSW_INSTALLED) != 0)
|
||||
#define ALLOCATED_VFSSW(vswp) ((vswp)->vsw_name[0] != '\0')
|
||||
#define RLOCK_VFSSW() (rw_enter(&vfssw_lock, RW_READER))
|
||||
#define RUNLOCK_VFSSW() (rw_exit(&vfssw_lock))
|
||||
#define WLOCK_VFSSW() (rw_enter(&vfssw_lock, RW_WRITER))
|
||||
#define WUNLOCK_VFSSW() (rw_exit(&vfssw_lock))
|
||||
#define VFSSW_LOCKED() (RW_LOCK_HELD(&vfssw_lock))
|
||||
#define VFSSW_WRITE_LOCKED() (RW_WRITE_HELD(&vfssw_lock))
|
||||
/*
|
||||
* VFS_SYNC flags.
|
||||
*/
|
||||
#define SYNC_ATTR 0x01 /* sync attributes only */
|
||||
#define SYNC_CLOSE 0x02 /* close open file */
|
||||
#define SYNC_ALL 0x04 /* force to sync all fs */
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _SYS_VFS_H */
|
@ -1,569 +0,0 @@
|
||||
/*
|
||||
* CDDL HEADER START
|
||||
*
|
||||
* The contents of this file are subject to the terms of the
|
||||
* Common Development and Distribution License (the "License").
|
||||
* You may not use this file except in compliance with the License.
|
||||
*
|
||||
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
* or http://www.opensolaris.org/os/licensing.
|
||||
* See the License for the specific language governing permissions
|
||||
* and limitations under the License.
|
||||
*
|
||||
* When distributing Covered Code, include this CDDL HEADER in each
|
||||
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
* If applicable, add the following below this CDDL HEADER, with the
|
||||
* fields enclosed by brackets "[]" replaced with your own identifying
|
||||
* information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
*
|
||||
* CDDL HEADER END
|
||||
*/
|
||||
/*
|
||||
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
||||
* Use is subject to license terms.
|
||||
*/
|
||||
|
||||
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
|
||||
/* All Rights Reserved */
|
||||
|
||||
/*
|
||||
* Portions of this source code were derived from Berkeley 4.3 BSD
|
||||
* under license from the Regents of the University of California.
|
||||
*/
|
||||
|
||||
#ifndef _SYS_VFS_H
|
||||
#define _SYS_VFS_H
|
||||
|
||||
#pragma ident "%Z%%M% %I% %E% SMI"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/t_lock.h>
|
||||
#include <sys/cred.h>
|
||||
#include <sys/vnode.h>
|
||||
#include <sys/statvfs.h>
|
||||
#include <sys/refstr.h>
|
||||
#include <sys/avl.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Data associated with mounted file systems.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Operations vector. This is used internal to the kernel; file systems
|
||||
* supply their list of operations via vfs_setfsops().
|
||||
*/
|
||||
|
||||
typedef struct vfsops vfsops_t;
|
||||
|
||||
/*
|
||||
* File system identifier. Should be unique (at least per machine).
|
||||
*/
|
||||
typedef struct {
|
||||
int val[2]; /* file system id type */
|
||||
} fsid_t;
|
||||
|
||||
/*
|
||||
* File identifier. Should be unique per filesystem on a single
|
||||
* machine. This is typically called by a stateless file server
|
||||
* in order to generate "file handles".
|
||||
*
|
||||
* Do not change the definition of struct fid ... fid_t without
|
||||
* letting the CacheFS group know about it! They will have to do at
|
||||
* least two things, in the same change that changes this structure:
|
||||
* 1. change CFSVERSION in usr/src/uts/common/sys/fs/cachefs_fs.h
|
||||
* 2. put the old version # in the canupgrade array
|
||||
* in cachfs_upgrade() in usr/src/cmd/fs.d/cachefs/fsck/fsck.c
|
||||
* This is necessary because CacheFS stores FIDs on disk.
|
||||
*
|
||||
* Many underlying file systems cast a struct fid into other
|
||||
* file system dependent structures which may require 4 byte alignment.
|
||||
* Because a fid starts with a short it may not be 4 byte aligned, the
|
||||
* fid_pad will force the alignment.
|
||||
*/
|
||||
#define MAXFIDSZ 64
|
||||
#define OLD_MAXFIDSZ 16
|
||||
|
||||
typedef struct fid {
|
||||
union {
|
||||
long fid_pad;
|
||||
struct {
|
||||
ushort_t len; /* length of data in bytes */
|
||||
char data[MAXFIDSZ]; /* data (variable len) */
|
||||
} _fid;
|
||||
} un;
|
||||
} fid_t;
|
||||
|
||||
#ifdef _SYSCALL32
|
||||
/*
|
||||
* Solaris 64 - use old-style cache format with 32-bit aligned fid for on-disk
|
||||
* struct compatibility.
|
||||
*/
|
||||
typedef struct fid32 {
|
||||
union {
|
||||
int32_t fid_pad;
|
||||
struct {
|
||||
uint16_t len; /* length of data in bytes */
|
||||
char data[MAXFIDSZ]; /* data (variable len) */
|
||||
} _fid;
|
||||
} un;
|
||||
} fid32_t;
|
||||
#else /* not _SYSCALL32 */
|
||||
#define fid32 fid
|
||||
typedef fid_t fid32_t;
|
||||
#endif /* _SYSCALL32 */
|
||||
|
||||
#define fid_len un._fid.len
|
||||
#define fid_data un._fid.data
|
||||
|
||||
/*
|
||||
* Structure defining a mount option for a filesystem.
|
||||
* option names are found in mntent.h
|
||||
*/
|
||||
typedef struct mntopt {
|
||||
char *mo_name; /* option name */
|
||||
char **mo_cancel; /* list of options cancelled by this one */
|
||||
char *mo_arg; /* argument string for this option */
|
||||
int mo_flags; /* flags for this mount option */
|
||||
void *mo_data; /* filesystem specific data */
|
||||
} mntopt_t;
|
||||
|
||||
/*
|
||||
* Flags that apply to mount options
|
||||
*/
|
||||
|
||||
#define MO_SET 0x01 /* option is set */
|
||||
#define MO_NODISPLAY 0x02 /* option not listed in mnttab */
|
||||
#define MO_HASVALUE 0x04 /* option takes a value */
|
||||
#define MO_IGNORE 0x08 /* option ignored by parser */
|
||||
#define MO_DEFAULT MO_SET /* option is on by default */
|
||||
#define MO_TAG 0x10 /* flags a tag set by user program */
|
||||
#define MO_EMPTY 0x20 /* empty space in option table */
|
||||
|
||||
#define VFS_NOFORCEOPT 0x01 /* honor MO_IGNORE (don't set option) */
|
||||
#define VFS_DISPLAY 0x02 /* Turn off MO_NODISPLAY bit for opt */
|
||||
#define VFS_NODISPLAY 0x04 /* Turn on MO_NODISPLAY bit for opt */
|
||||
#define VFS_CREATEOPT 0x08 /* Create the opt if it's not there */
|
||||
|
||||
/*
|
||||
* Structure holding mount option strings for the mounted file system.
|
||||
*/
|
||||
typedef struct mntopts {
|
||||
uint_t mo_count; /* number of entries in table */
|
||||
mntopt_t *mo_list; /* list of mount options */
|
||||
} mntopts_t;
|
||||
|
||||
/*
|
||||
* The kstat structures associated with the vopstats are kept in an
|
||||
* AVL tree. This is to avoid the case where a file system does not
|
||||
* use a unique fsid_t for each vfs (e.g., namefs). In order to do
|
||||
* this, we need a structure that the AVL tree can use that also
|
||||
* references the kstat.
|
||||
* Note that the vks_fsid is generated from the value reported by
|
||||
* VFS_STATVFS().
|
||||
*/
|
||||
typedef struct vskstat_anchor {
|
||||
avl_node_t vsk_node; /* Required for use by AVL routines */
|
||||
kstat_t *vsk_ksp; /* kstat structure for vopstats */
|
||||
ulong_t vsk_fsid; /* fsid associated w/this FS */
|
||||
} vsk_anchor_t;
|
||||
|
||||
extern avl_tree_t vskstat_tree;
|
||||
extern kmutex_t vskstat_tree_lock;
|
||||
|
||||
/*
|
||||
* Structure per mounted file system. Each mounted file system has
|
||||
* an array of operations and an instance record.
|
||||
*
|
||||
* The file systems are kept on a doubly linked circular list headed by
|
||||
* "rootvfs".
|
||||
* File system implementations should not access this list;
|
||||
* it's intended for use only in the kernel's vfs layer.
|
||||
*
|
||||
* Each zone also has its own list of mounts, containing filesystems mounted
|
||||
* somewhere within the filesystem tree rooted at the zone's rootpath. The
|
||||
* list is doubly linked to match the global list.
|
||||
*
|
||||
* mnttab locking: the in-kernel mnttab uses the vfs_mntpt, vfs_resource and
|
||||
* vfs_mntopts fields in the vfs_t. mntpt and resource are refstr_ts that
|
||||
* are set at mount time and can only be modified during a remount.
|
||||
* It is safe to read these fields if you can prevent a remount on the vfs,
|
||||
* or through the convenience funcs vfs_getmntpoint() and vfs_getresource().
|
||||
* The mntopts field may only be accessed through the provided convenience
|
||||
* functions, as it is protected by the vfs list lock. Modifying a mount
|
||||
* option requires grabbing the vfs list write lock, which can be a very
|
||||
* high latency lock.
|
||||
*/
|
||||
struct zone; /* from zone.h */
|
||||
struct fem_head; /* from fem.h */
|
||||
|
||||
/*
|
||||
* Private vfs data, NOT to be used by a file system implementation.
|
||||
*/
|
||||
typedef struct vfs_impl {
|
||||
struct fem_head *vi_femhead; /* fs monitoring */
|
||||
/*
|
||||
* Support for statistics on the vnode operations
|
||||
*/
|
||||
vsk_anchor_t *vi_vskap; /* anchor for vopstats' kstat */
|
||||
vopstats_t *vi_fstypevsp; /* ptr to per-fstype vopstats */
|
||||
vopstats_t vi_vopstats; /* per-mount vnode op stats */
|
||||
} vfs_impl_t;
|
||||
|
||||
typedef struct vfs {
|
||||
struct vfs *vfs_next; /* next VFS in VFS list */
|
||||
struct vfs *vfs_prev; /* prev VFS in VFS list */
|
||||
|
||||
/* vfs_op should not be used directly. Accessor functions are provided */
|
||||
vfsops_t *vfs_op; /* operations on VFS */
|
||||
|
||||
struct vnode *vfs_vnodecovered; /* vnode mounted on */
|
||||
uint_t vfs_flag; /* flags */
|
||||
uint_t vfs_bsize; /* native block size */
|
||||
int vfs_fstype; /* file system type index */
|
||||
fsid_t vfs_fsid; /* file system id */
|
||||
void *vfs_data; /* private data */
|
||||
dev_t vfs_dev; /* device of mounted VFS */
|
||||
ulong_t vfs_bcount; /* I/O count (accounting) */
|
||||
struct vfs *vfs_list; /* sync list pointer */
|
||||
struct vfs *vfs_hash; /* hash list pointer */
|
||||
ksema_t vfs_reflock; /* mount/unmount/sync lock */
|
||||
uint_t vfs_count; /* vfs reference count */
|
||||
mntopts_t vfs_mntopts; /* options mounted with */
|
||||
refstr_t *vfs_resource; /* mounted resource name */
|
||||
refstr_t *vfs_mntpt; /* mount point name */
|
||||
time_t vfs_mtime; /* time we were mounted */
|
||||
vfs_impl_t *vfs_implp; /* impl specific data */
|
||||
/*
|
||||
* Zones support. Note that the zone that "owns" the mount isn't
|
||||
* necessarily the same as the zone in which the zone is visible.
|
||||
* That is, vfs_zone and (vfs_zone_next|vfs_zone_prev) may refer to
|
||||
* different zones.
|
||||
*/
|
||||
struct zone *vfs_zone; /* zone that owns the mount */
|
||||
struct vfs *vfs_zone_next; /* next VFS visible in zone */
|
||||
struct vfs *vfs_zone_prev; /* prev VFS visible in zone */
|
||||
} vfs_t;
|
||||
|
||||
#define vfs_femhead vfs_implp->vi_femhead
|
||||
#define vfs_vskap vfs_implp->vi_vskap
|
||||
#define vfs_fstypevsp vfs_implp->vi_fstypevsp
|
||||
#define vfs_vopstats vfs_implp->vi_vopstats
|
||||
|
||||
/*
|
||||
* VFS flags.
|
||||
*/
|
||||
#define VFS_RDONLY 0x01 /* read-only vfs */
|
||||
#define VFS_NOMNTTAB 0x02 /* vfs not seen in mnttab */
|
||||
#define VFS_NOSETUID 0x08 /* setuid disallowed */
|
||||
#define VFS_REMOUNT 0x10 /* modify mount options only */
|
||||
#define VFS_NOTRUNC 0x20 /* does not truncate long file names */
|
||||
#define VFS_UNLINKABLE 0x40 /* unlink(2) can be applied to root */
|
||||
#define VFS_PXFS 0x80 /* clustering: global fs proxy vfs */
|
||||
#define VFS_UNMOUNTED 0x100 /* file system has been unmounted */
|
||||
#define VFS_NBMAND 0x200 /* allow non-blocking mandatory locks */
|
||||
#define VFS_XATTR 0x400 /* fs supports extended attributes */
|
||||
#define VFS_NODEVICES 0x800 /* device-special files disallowed */
|
||||
#define VFS_NOEXEC 0x1000 /* executables disallowed */
|
||||
#define VFS_STATS 0x2000 /* file system can collect stats */
|
||||
|
||||
#define VFS_NORESOURCE "unspecified_resource"
|
||||
#define VFS_NOMNTPT "unspecified_mountpoint"
|
||||
|
||||
/*
|
||||
* Argument structure for mount(2).
|
||||
*
|
||||
* Flags are defined in <sys/mount.h>.
|
||||
*
|
||||
* Note that if the MS_SYSSPACE bit is set in flags, the pointer fields in
|
||||
* this structure are to be interpreted as kernel addresses. File systems
|
||||
* should be prepared for this possibility.
|
||||
*/
|
||||
struct mounta {
|
||||
char *spec;
|
||||
char *dir;
|
||||
int flags;
|
||||
char *fstype;
|
||||
char *dataptr;
|
||||
int datalen;
|
||||
char *optptr;
|
||||
int optlen;
|
||||
};
|
||||
|
||||
/*
|
||||
* Reasons for calling the vfs_mountroot() operation.
|
||||
*/
|
||||
enum whymountroot { ROOT_INIT, ROOT_REMOUNT, ROOT_UNMOUNT};
|
||||
typedef enum whymountroot whymountroot_t;
|
||||
|
||||
/*
|
||||
* Reasons for calling the VFS_VNSTATE():
|
||||
*/
|
||||
enum vntrans {
|
||||
VNTRANS_EXISTS,
|
||||
VNTRANS_IDLED,
|
||||
VNTRANS_RECLAIMED,
|
||||
VNTRANS_DESTROYED
|
||||
};
|
||||
typedef enum vntrans vntrans_t;
|
||||
|
||||
/*
|
||||
* VFS_OPS defines all the vfs operations. It is used to define
|
||||
* the vfsops structure (below) and the fs_func_p union (vfs_opreg.h).
|
||||
*/
|
||||
#define VFS_OPS \
|
||||
int (*vfs_mount)(vfs_t *, vnode_t *, struct mounta *, cred_t *); \
|
||||
int (*vfs_unmount)(vfs_t *, int, cred_t *); \
|
||||
int (*vfs_root)(vfs_t *, vnode_t **); \
|
||||
int (*vfs_statvfs)(vfs_t *, statvfs64_t *); \
|
||||
int (*vfs_sync)(vfs_t *, short, cred_t *); \
|
||||
int (*vfs_vget)(vfs_t *, vnode_t **, fid_t *); \
|
||||
int (*vfs_mountroot)(vfs_t *, enum whymountroot); \
|
||||
void (*vfs_freevfs)(vfs_t *); \
|
||||
int (*vfs_vnstate)(vfs_t *, vnode_t *, vntrans_t) /* NB: No ";" */
|
||||
|
||||
/*
|
||||
* Operations supported on virtual file system.
|
||||
*/
|
||||
struct vfsops {
|
||||
VFS_OPS; /* Signature of all vfs operations (vfsops) */
|
||||
};
|
||||
|
||||
extern int fsop_mount(vfs_t *, vnode_t *, struct mounta *, cred_t *);
|
||||
extern int fsop_unmount(vfs_t *, int, cred_t *);
|
||||
extern int fsop_root(vfs_t *, vnode_t **);
|
||||
extern int fsop_statfs(vfs_t *, statvfs64_t *);
|
||||
extern int fsop_sync(vfs_t *, short, cred_t *);
|
||||
extern int fsop_vget(vfs_t *, vnode_t **, fid_t *);
|
||||
extern int fsop_mountroot(vfs_t *, enum whymountroot);
|
||||
extern void fsop_freefs(vfs_t *);
|
||||
extern int fsop_sync_by_kind(int, short, cred_t *);
|
||||
extern int fsop_vnstate(vfs_t *, vnode_t *, vntrans_t);
|
||||
|
||||
#define VFS_MOUNT(vfsp, mvp, uap, cr) fsop_mount(vfsp, mvp, uap, cr)
|
||||
#define VFS_UNMOUNT(vfsp, flag, cr) fsop_unmount(vfsp, flag, cr)
|
||||
#define VFS_ROOT(vfsp, vpp) fsop_root(vfsp, vpp)
|
||||
#define VFS_STATVFS(vfsp, sp) fsop_statfs(vfsp, sp)
|
||||
#define VFS_SYNC(vfsp, flag, cr) fsop_sync(vfsp, flag, cr)
|
||||
#define VFS_VGET(vfsp, vpp, fidp) fsop_vget(vfsp, vpp, fidp)
|
||||
#define VFS_MOUNTROOT(vfsp, init) fsop_mountroot(vfsp, init)
|
||||
#define VFS_FREEVFS(vfsp) fsop_freefs(vfsp)
|
||||
#define VFS_VNSTATE(vfsp, vn, ns) fsop_vnstate(vfsp, vn, ns)
|
||||
|
||||
#define VFSNAME_MOUNT "mount"
|
||||
#define VFSNAME_UNMOUNT "unmount"
|
||||
#define VFSNAME_ROOT "root"
|
||||
#define VFSNAME_STATVFS "statvfs"
|
||||
#define VFSNAME_SYNC "sync"
|
||||
#define VFSNAME_VGET "vget"
|
||||
#define VFSNAME_MOUNTROOT "mountroot"
|
||||
#define VFSNAME_FREEVFS "freevfs"
|
||||
#define VFSNAME_VNSTATE "vnstate"
|
||||
/*
|
||||
* Filesystem type switch table.
|
||||
*/
|
||||
|
||||
typedef struct vfssw {
|
||||
char *vsw_name; /* type name -- max len _ST_FSTYPSZ */
|
||||
int (*vsw_init) (int, char *);
|
||||
/* init routine (for non-loadable fs only) */
|
||||
int vsw_flag; /* flags */
|
||||
mntopts_t vsw_optproto; /* mount options table prototype */
|
||||
uint_t vsw_count; /* count of references */
|
||||
kmutex_t vsw_lock; /* lock to protect vsw_count */
|
||||
vfsops_t vsw_vfsops; /* filesystem operations vector */
|
||||
} vfssw_t;
|
||||
|
||||
/*
|
||||
* Filesystem type definition record. All file systems must export a record
|
||||
* of this type through their modlfs structure.
|
||||
*/
|
||||
|
||||
typedef struct vfsdef_v3 {
|
||||
int def_version; /* structure version, must be first */
|
||||
char *name; /* filesystem type name */
|
||||
int (*init) (int, char *); /* init routine */
|
||||
int flags; /* filesystem flags */
|
||||
mntopts_t *optproto; /* mount options table prototype */
|
||||
} vfsdef_v3;
|
||||
|
||||
typedef struct vfsdef_v3 vfsdef_t;
|
||||
|
||||
enum {
|
||||
VFSDEF_VERSION = 3
|
||||
};
|
||||
|
||||
/*
|
||||
* flags for vfssw and vfsdef
|
||||
*/
|
||||
#define VSW_HASPROTO 0x01 /* struct has a mount options prototype */
|
||||
#define VSW_CANRWRO 0x02 /* file system can transition from rw to ro */
|
||||
#define VSW_CANREMOUNT 0x04 /* file system supports remounts */
|
||||
#define VSW_NOTZONESAFE 0x08 /* zone_enter(2) should fail for these files */
|
||||
#define VSW_VOLATILEDEV 0x10 /* vfs_dev can change each time fs is mounted */
|
||||
#define VSW_STATS 0x20 /* file system can collect stats */
|
||||
|
||||
#define VSW_INSTALLED 0x8000 /* this vsw is associated with a file system */
|
||||
|
||||
#if defined(_KERNEL)
|
||||
/*
|
||||
* Public operations.
|
||||
*/
|
||||
struct umounta;
|
||||
struct statvfsa;
|
||||
struct fstatvfsa;
|
||||
|
||||
void vfs_freevfsops(vfsops_t *);
|
||||
int vfs_freevfsops_by_type(int);
|
||||
void vfs_setops(vfs_t *, vfsops_t *);
|
||||
vfsops_t *vfs_getops(vfs_t *vfsp);
|
||||
int vfs_matchops(vfs_t *, vfsops_t *);
|
||||
int vfs_can_sync(vfs_t *vfsp);
|
||||
void vfs_init(vfs_t *vfsp, vfsops_t *, void *);
|
||||
void vfsimpl_setup(vfs_t *vfsp);
|
||||
void vfsimpl_teardown(vfs_t *vfsp);
|
||||
void vn_exists(vnode_t *);
|
||||
void vn_idle(vnode_t *);
|
||||
void vn_reclaim(vnode_t *);
|
||||
void vn_invalid(vnode_t *);
|
||||
|
||||
int rootconf(void);
|
||||
int svm_rootconf(void);
|
||||
int domount(char *, struct mounta *, vnode_t *, struct cred *,
|
||||
struct vfs **);
|
||||
int dounmount(struct vfs *, int, cred_t *);
|
||||
int vfs_lock(struct vfs *);
|
||||
int vfs_rlock(struct vfs *);
|
||||
void vfs_lock_wait(struct vfs *);
|
||||
void vfs_rlock_wait(struct vfs *);
|
||||
void vfs_unlock(struct vfs *);
|
||||
int vfs_lock_held(struct vfs *);
|
||||
struct _kthread *vfs_lock_owner(struct vfs *);
|
||||
void sync(void);
|
||||
void vfs_sync(int);
|
||||
void vfs_mountroot(void);
|
||||
void vfs_add(vnode_t *, struct vfs *, int);
|
||||
void vfs_remove(struct vfs *);
|
||||
|
||||
/* The following functions are not for general use by filesystems */
|
||||
|
||||
void vfs_createopttbl(mntopts_t *, const char *);
|
||||
void vfs_copyopttbl(const mntopts_t *, mntopts_t *);
|
||||
void vfs_mergeopttbl(const mntopts_t *, const mntopts_t *, mntopts_t *);
|
||||
void vfs_freeopttbl(mntopts_t *);
|
||||
void vfs_parsemntopts(mntopts_t *, char *, int);
|
||||
int vfs_buildoptionstr(const mntopts_t *, char *, int);
|
||||
struct mntopt *vfs_hasopt(const mntopts_t *, const char *);
|
||||
void vfs_mnttab_modtimeupd(void);
|
||||
|
||||
void vfs_clearmntopt(struct vfs *, const char *);
|
||||
void vfs_setmntopt(struct vfs *, const char *, const char *, int);
|
||||
void vfs_setresource(struct vfs *, const char *);
|
||||
void vfs_setmntpoint(struct vfs *, const char *);
|
||||
refstr_t *vfs_getresource(const struct vfs *);
|
||||
refstr_t *vfs_getmntpoint(const struct vfs *);
|
||||
int vfs_optionisset(const struct vfs *, const char *, char **);
|
||||
int vfs_settag(uint_t, uint_t, const char *, const char *, cred_t *);
|
||||
int vfs_clrtag(uint_t, uint_t, const char *, const char *, cred_t *);
|
||||
void vfs_syncall(void);
|
||||
void vfs_syncprogress(void);
|
||||
void vfsinit(void);
|
||||
void vfs_unmountall(void);
|
||||
void vfs_make_fsid(fsid_t *, dev_t, int);
|
||||
void vfs_addmip(dev_t, struct vfs *);
|
||||
void vfs_delmip(struct vfs *);
|
||||
int vfs_devismounted(dev_t);
|
||||
int vfs_devmounting(dev_t, struct vfs *);
|
||||
int vfs_opsinuse(vfsops_t *);
|
||||
struct vfs *getvfs(fsid_t *);
|
||||
struct vfs *vfs_dev2vfsp(dev_t);
|
||||
struct vfs *vfs_mntpoint2vfsp(const char *);
|
||||
struct vfssw *allocate_vfssw(char *);
|
||||
struct vfssw *vfs_getvfssw(char *);
|
||||
struct vfssw *vfs_getvfsswbyname(char *);
|
||||
struct vfssw *vfs_getvfsswbyvfsops(vfsops_t *);
|
||||
void vfs_refvfssw(struct vfssw *);
|
||||
void vfs_unrefvfssw(struct vfssw *);
|
||||
uint_t vf_to_stf(uint_t);
|
||||
void vfs_mnttab_modtime(timespec_t *);
|
||||
void vfs_mnttab_poll(timespec_t *, struct pollhead **);
|
||||
|
||||
void vfs_list_lock(void);
|
||||
void vfs_list_read_lock(void);
|
||||
void vfs_list_unlock(void);
|
||||
void vfs_list_add(struct vfs *);
|
||||
void vfs_list_remove(struct vfs *);
|
||||
void vfs_hold(vfs_t *vfsp);
|
||||
void vfs_rele(vfs_t *vfsp);
|
||||
void fs_freevfs(vfs_t *);
|
||||
void vfs_root_redev(vfs_t *vfsp, dev_t ndev, int fstype);
|
||||
|
||||
int vfs_zone_change_safe(vfs_t *);
|
||||
|
||||
#define VFSHASH(maj, min) (((int)((maj)+(min))) & (vfshsz - 1))
|
||||
#define VFS_ON_LIST(vfsp) \
|
||||
((vfsp)->vfs_next != (vfsp) && (vfsp)->vfs_next != NULL)
|
||||
|
||||
/*
|
||||
* Globals.
|
||||
*/
|
||||
|
||||
extern struct vfssw vfssw[]; /* table of filesystem types */
|
||||
extern krwlock_t vfssw_lock;
|
||||
extern char rootfstype[]; /* name of root fstype */
|
||||
extern const int nfstype; /* # of elements in vfssw array */
|
||||
extern vfsops_t *EIO_vfsops; /* operations for vfs being torn-down */
|
||||
|
||||
/*
|
||||
* The following variables are private to the the kernel's vfs layer. File
|
||||
* system implementations should not access them.
|
||||
*/
|
||||
extern struct vfs *rootvfs; /* ptr to root vfs structure */
|
||||
typedef struct {
|
||||
struct vfs *rvfs_head; /* head vfs in chain */
|
||||
kmutex_t rvfs_lock; /* mutex protecting this chain */
|
||||
uint32_t rvfs_len; /* length of this chain */
|
||||
} rvfs_t;
|
||||
extern rvfs_t *rvfs_list;
|
||||
extern int vfshsz; /* # of elements in rvfs_head array */
|
||||
extern const mntopts_t vfs_mntopts; /* globally recognized options */
|
||||
|
||||
#endif /* defined(_KERNEL) */
|
||||
|
||||
#define VFS_HOLD(vfsp) { \
|
||||
vfs_hold(vfsp); \
|
||||
}
|
||||
|
||||
#define VFS_RELE(vfsp) { \
|
||||
vfs_rele(vfsp); \
|
||||
}
|
||||
|
||||
#define VFS_INIT(vfsp, op, data) { \
|
||||
vfs_init((vfsp), (op), (data)); \
|
||||
vfsimpl_setup((vfsp)); \
|
||||
}
|
||||
|
||||
|
||||
#define VFS_INSTALLED(vfsswp) (((vfsswp)->vsw_flag & VSW_INSTALLED) != 0)
|
||||
#define ALLOCATED_VFSSW(vswp) ((vswp)->vsw_name[0] != '\0')
|
||||
#define RLOCK_VFSSW() (rw_enter(&vfssw_lock, RW_READER))
|
||||
#define RUNLOCK_VFSSW() (rw_exit(&vfssw_lock))
|
||||
#define WLOCK_VFSSW() (rw_enter(&vfssw_lock, RW_WRITER))
|
||||
#define WUNLOCK_VFSSW() (rw_exit(&vfssw_lock))
|
||||
#define VFSSW_LOCKED() (RW_LOCK_HELD(&vfssw_lock))
|
||||
#define VFSSW_WRITE_LOCKED() (RW_WRITE_HELD(&vfssw_lock))
|
||||
/*
|
||||
* VFS_SYNC flags.
|
||||
*/
|
||||
#define SYNC_ATTR 0x01 /* sync attributes only */
|
||||
#define SYNC_CLOSE 0x02 /* close open file */
|
||||
#define SYNC_ALL 0x04 /* force to sync all fs */
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _SYS_VFS_H */
|
Loading…
Reference in New Issue
Block a user