84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
614 lines
21 KiB
C
614 lines
21 KiB
C
/* $NetBSD: vnode.h,v 1.242 2013/12/01 00:59:34 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2008 The NetBSD Foundation, Inc.
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1989, 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.
|
|
*
|
|
* @(#)vnode.h 8.17 (Berkeley) 5/20/95
|
|
*/
|
|
|
|
#ifndef _SYS_VNODE_H_
|
|
#define _SYS_VNODE_H_
|
|
|
|
#include <sys/event.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/rwlock.h>
|
|
#include <sys/mutex.h>
|
|
|
|
/* XXX: clean up includes later */
|
|
#include <uvm/uvm_param.h> /* XXX */
|
|
#include <uvm/uvm_pglist.h> /* XXX */
|
|
#include <uvm/uvm_object.h> /* XXX */
|
|
#include <uvm/uvm_extern.h> /* XXX */
|
|
|
|
struct namecache;
|
|
struct uvm_ractx;
|
|
|
|
/*
|
|
* The vnode is the focus of all file activity in UNIX. There is a
|
|
* unique vnode allocated for each active file, each current directory,
|
|
* each mounted-on file, text file, and the root.
|
|
*/
|
|
|
|
/*
|
|
* Vnode types. VNON means no type.
|
|
*/
|
|
enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO, VBAD };
|
|
|
|
#define VNODE_TYPES \
|
|
"VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD"
|
|
|
|
/*
|
|
* Vnode tag types.
|
|
* These are for the benefit of external programs only (e.g., pstat)
|
|
* and should NEVER be inspected by the kernel.
|
|
*/
|
|
enum vtagtype {
|
|
VT_NON, VT_UFS, VT_NFS, VT_MFS, VT_MSDOSFS, VT_LFS, VT_LOFS,
|
|
VT_FDESC, VT_PORTAL, VT_NULL, VT_UMAP, VT_KERNFS, VT_PROCFS,
|
|
VT_AFS, VT_ISOFS, VT_UNION, VT_ADOSFS, VT_EXT2FS, VT_CODA,
|
|
VT_FILECORE, VT_NTFS, VT_VFS, VT_OVERLAY, VT_SMBFS, VT_PTYFS,
|
|
VT_TMPFS, VT_UDF, VT_SYSVBFS, VT_PUFFS, VT_HFS, VT_EFS, VT_ZFS,
|
|
VT_RUMP, VT_NILFS, VT_V7FS, VT_CHFS
|
|
};
|
|
|
|
#define VNODE_TAGS \
|
|
"VT_NON", "VT_UFS", "VT_NFS", "VT_MFS", "VT_MSDOSFS", "VT_LFS", "VT_LOFS", \
|
|
"VT_FDESC", "VT_PORTAL", "VT_NULL", "VT_UMAP", "VT_KERNFS", "VT_PROCFS", \
|
|
"VT_AFS", "VT_ISOFS", "VT_UNION", "VT_ADOSFS", "VT_EXT2FS", "VT_CODA", \
|
|
"VT_FILECORE", "VT_NTFS", "VT_VFS", "VT_OVERLAY", "VT_SMBFS", "VT_PTYFS", \
|
|
"VT_TMPFS", "VT_UDF", "VT_SYSVBFS", "VT_PUFFS", "VT_HFS", "VT_EFS", \
|
|
"VT_ZFS", "VT_RUMP", "VT_NILFS", "VT_V7FS", "VT_CHFS"
|
|
|
|
struct vnode;
|
|
struct buf;
|
|
|
|
LIST_HEAD(buflists, buf);
|
|
TAILQ_HEAD(vnodelst, vnode);
|
|
|
|
/*
|
|
* Reading or writing any of these items requires holding the appropriate
|
|
* lock. Field markings and the corresponding locks:
|
|
*
|
|
* : stable, reference to the vnode is required
|
|
* f vnode_free_list_lock, or vrele_lock for vrele_list
|
|
* i v_interlock
|
|
* m mntvnode_lock
|
|
* n namecache_lock
|
|
* s syncer_data_lock
|
|
* u locked by underlying filesystem
|
|
* v vnode lock
|
|
* x v_interlock + bufcache_lock to modify, either to inspect
|
|
*
|
|
* Each underlying filesystem allocates its own private area and hangs
|
|
* it from v_data.
|
|
*/
|
|
struct vnode {
|
|
struct uvm_object v_uobj; /* i: the VM object */
|
|
kcondvar_t v_cv; /* i: synchronization */
|
|
voff_t v_size; /* i: size of file */
|
|
voff_t v_writesize; /* i: new size after write */
|
|
int v_iflag; /* i: VI_* flags */
|
|
int v_vflag; /* v: VV_* flags */
|
|
int v_uflag; /* u: VU_* flags */
|
|
int v_numoutput; /* i: # of pending writes */
|
|
int v_writecount; /* i: ref count of writers */
|
|
int v_holdcnt; /* i: page & buffer refs */
|
|
int v_synclist_slot; /* s: synclist slot index */
|
|
struct mount *v_mount; /* v: ptr to vfs we are in */
|
|
int (**v_op)(void *); /* :: vnode operations vector */
|
|
TAILQ_ENTRY(vnode) v_freelist; /* f: vnode freelist */
|
|
struct vnodelst *v_freelisthd; /* f: which freelist? */
|
|
TAILQ_ENTRY(vnode) v_mntvnodes; /* m: vnodes for mount point */
|
|
struct buflists v_cleanblkhd; /* x: clean blocklist head */
|
|
struct buflists v_dirtyblkhd; /* x: dirty blocklist head */
|
|
TAILQ_ENTRY(vnode) v_synclist; /* s: vnodes with dirty bufs */
|
|
LIST_HEAD(, namecache) v_dnclist; /* n: namecaches (children) */
|
|
LIST_HEAD(, namecache) v_nclist; /* n: namecaches (parent) */
|
|
union {
|
|
struct mount *vu_mountedhere;/* v: ptr to vfs (VDIR) */
|
|
struct socket *vu_socket; /* v: unix ipc (VSOCK) */
|
|
struct specnode *vu_specnode; /* v: device (VCHR, VBLK) */
|
|
struct fifoinfo *vu_fifoinfo; /* v: fifo (VFIFO) */
|
|
struct uvm_ractx *vu_ractx; /* i: read-ahead ctx (VREG) */
|
|
} v_un;
|
|
enum vtype v_type; /* :: vnode type */
|
|
enum vtagtype v_tag; /* :: type of underlying data */
|
|
krwlock_t v_lock; /* v: lock for this vnode */
|
|
void *v_data; /* :: private data for fs */
|
|
struct klist v_klist; /* i: notes attached to vnode */
|
|
};
|
|
#define v_usecount v_uobj.uo_refs
|
|
#define v_interlock v_uobj.vmobjlock
|
|
#define v_mountedhere v_un.vu_mountedhere
|
|
#define v_socket v_un.vu_socket
|
|
#define v_specnode v_un.vu_specnode
|
|
#define v_fifoinfo v_un.vu_fifoinfo
|
|
#define v_ractx v_un.vu_ractx
|
|
|
|
typedef struct vnodelst vnodelst_t;
|
|
typedef struct vnode vnode_t;
|
|
|
|
/*
|
|
* Vnode flags. The first set are locked by vnode lock or are stable.
|
|
* VSYSTEM is only used to skip vflush()ing quota files. VISTTY is used
|
|
* when reading dead vnodes.
|
|
*/
|
|
#define VV_ROOT 0x00000001 /* root of its file system */
|
|
#define VV_SYSTEM 0x00000002 /* vnode being used by kernel */
|
|
#define VV_ISTTY 0x00000004 /* vnode represents a tty */
|
|
#define VV_MAPPED 0x00000008 /* vnode might have user mappings */
|
|
#define VV_MPSAFE 0x00000010 /* file system code is MP safe */
|
|
#define VV_LOCKSWORK 0x00000020 /* FS supports locking discipline */
|
|
|
|
/*
|
|
* The second set are locked by vp->v_interlock.
|
|
*/
|
|
#define VI_TEXT 0x00000100 /* vnode is a pure text prototype */
|
|
#define VI_EXECMAP 0x00000200 /* might have PROT_EXEC mappings */
|
|
#define VI_WRMAP 0x00000400 /* might have PROT_WRITE u. mappings */
|
|
#define VI_WRMAPDIRTY 0x00000800 /* might have dirty pages */
|
|
#define VI_XLOCK 0x00001000 /* vnode is locked to change type */
|
|
#define VI_ONWORKLST 0x00004000 /* On syncer work-list */
|
|
#define VI_MARKER 0x00008000 /* Dummy marker vnode */
|
|
#define VI_LAYER 0x00020000 /* vnode is on a layer filesystem */
|
|
#define VI_LOCKSHARE 0x00040000 /* v_interlock is shared */
|
|
#define VI_CLEAN 0x00080000 /* has been reclaimed */
|
|
#ifdef _VFS_VNODE_PRIVATE
|
|
#define VI_INACTREDO 0x00200000 /* need to redo VOP_INACTIVE() */
|
|
#define VI_INACTNOW 0x00800000 /* VOP_INACTIVE() in progress */
|
|
#endif /* _VFS_VNODE_PRIVATE */
|
|
|
|
/*
|
|
* The third set are locked by the underlying file system.
|
|
*/
|
|
#define VU_DIROP 0x01000000 /* LFS: involved in a directory op */
|
|
|
|
#define VNODE_FLAGBITS \
|
|
"\20\1ROOT\2SYSTEM\3ISTTY\4MAPPED\5MPSAFE\6LOCKSWORK\11TEXT\12EXECMAP" \
|
|
"\13WRMAP\14WRMAPDIRTY\15XLOCK\17ONWORKLST\20MARKER" \
|
|
"\22LAYER\24CLEAN\26INACTREDO" \
|
|
"\30INACTNOW\31DIROP"
|
|
|
|
#define VSIZENOTSET ((voff_t)-1)
|
|
|
|
/*
|
|
* vnode lock flags
|
|
*/
|
|
#define LK_SHARED 0x00000001 /* shared lock */
|
|
#define LK_EXCLUSIVE 0x00000002 /* exclusive lock */
|
|
#define LK_NOWAIT 0x00000010 /* do not sleep to await lock */
|
|
#define LK_RETRY 0x00020000 /* vn_lock: retry until locked */
|
|
|
|
/*
|
|
* Vnode attributes. A field value of VNOVAL represents a field whose value
|
|
* is unavailable (getattr) or which is not to be changed (setattr).
|
|
*/
|
|
struct vattr {
|
|
enum vtype va_type; /* vnode type (for create) */
|
|
mode_t va_mode; /* files access mode and type */
|
|
nlink_t va_nlink; /* number of references to file */
|
|
uid_t va_uid; /* owner user id */
|
|
gid_t va_gid; /* owner group id */
|
|
dev_t va_fsid; /* file system id (dev for now) */
|
|
ino_t va_fileid; /* file id */
|
|
u_quad_t va_size; /* file size in bytes */
|
|
long va_blocksize; /* blocksize preferred for i/o */
|
|
struct timespec va_atime; /* time of last access */
|
|
struct timespec va_mtime; /* time of last modification */
|
|
struct timespec va_ctime; /* time file changed */
|
|
struct timespec va_birthtime; /* time file created */
|
|
u_long va_gen; /* generation number of file */
|
|
u_long va_flags; /* flags defined for file */
|
|
dev_t va_rdev; /* device the special file represents */
|
|
u_quad_t va_bytes; /* bytes of disk space held by file */
|
|
u_quad_t va_filerev; /* file modification number */
|
|
u_int va_vaflags; /* operations flags, see below */
|
|
long va_spare; /* remain quad aligned */
|
|
};
|
|
|
|
/*
|
|
* Flags for va_vaflags.
|
|
*/
|
|
#define VA_UTIMES_NULL 0x01 /* utimes argument was NULL */
|
|
#define VA_EXCLUSIVE 0x02 /* exclusive create request */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Flags for ioflag.
|
|
*/
|
|
#define IO_UNIT 0x00010 /* do I/O as atomic unit */
|
|
#define IO_APPEND 0x00020 /* append write to end */
|
|
#define IO_SYNC (0x40|IO_DSYNC) /* sync I/O file integrity completion */
|
|
#define IO_NODELOCKED 0x00080 /* underlying node already locked */
|
|
#define IO_NDELAY 0x00100 /* FNDELAY flag set in file table */
|
|
#define IO_DSYNC 0x00200 /* sync I/O data integrity completion */
|
|
#define IO_ALTSEMANTICS 0x00400 /* use alternate i/o semantics */
|
|
#define IO_NORMAL 0x00800 /* operate on regular data */
|
|
#define IO_EXT 0x01000 /* operate on extended attributes */
|
|
#define IO_DIRECT 0x02000 /* direct I/O hint */
|
|
#define IO_JOURNALLOCKED 0x04000 /* journal is already locked */
|
|
#define IO_ADV_MASK 0x00003 /* access pattern hint */
|
|
|
|
#define IO_ADV_SHIFT 0
|
|
#define IO_ADV_ENCODE(adv) (((adv) << IO_ADV_SHIFT) & IO_ADV_MASK)
|
|
#define IO_ADV_DECODE(ioflag) (((ioflag) & IO_ADV_MASK) >> IO_ADV_SHIFT)
|
|
|
|
/*
|
|
* Modes.
|
|
*/
|
|
#define VREAD 00004 /* read, write, execute permissions */
|
|
#define VWRITE 00002
|
|
#define VEXEC 00001
|
|
|
|
/*
|
|
* Token indicating no attribute value yet assigned.
|
|
*/
|
|
#define VNOVAL (-1)
|
|
|
|
/*
|
|
* Convert between vnode types and inode formats (since POSIX.1
|
|
* defines mode word of stat structure in terms of inode formats).
|
|
*/
|
|
extern const enum vtype iftovt_tab[];
|
|
extern const int vttoif_tab[];
|
|
#define IFTOVT(mode) (iftovt_tab[((mode) & S_IFMT) >> 12])
|
|
#define VTTOIF(indx) (vttoif_tab[(int)(indx)])
|
|
#define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
|
|
|
|
/*
|
|
* Flags to various vnode functions.
|
|
*/
|
|
#define SKIPSYSTEM 0x0001 /* vflush: skip vnodes marked VSYSTEM */
|
|
#define FORCECLOSE 0x0002 /* vflush: force file closeure */
|
|
#define WRITECLOSE 0x0004 /* vflush: only close writable files */
|
|
#define V_SAVE 0x0001 /* vinvalbuf: sync file first */
|
|
|
|
/*
|
|
* Flags to various vnode operations.
|
|
*/
|
|
#define REVOKEALL 0x0001 /* revoke: revoke all aliases */
|
|
|
|
#define FSYNC_WAIT 0x0001 /* fsync: wait for completion */
|
|
#define FSYNC_DATAONLY 0x0002 /* fsync: hint: sync file data only */
|
|
#define FSYNC_RECLAIM 0x0004 /* fsync: hint: vnode is being reclaimed */
|
|
#define FSYNC_LAZY 0x0008 /* fsync: lazy sync (trickle) */
|
|
#define FSYNC_NOLOG 0x0010 /* fsync: do not flush the log */
|
|
#define FSYNC_CACHE 0x0100 /* fsync: flush disk caches too */
|
|
|
|
#define UPDATE_WAIT 0x0001 /* update: wait for completion */
|
|
#define UPDATE_DIROP 0x0002 /* update: hint to fs to wait or not */
|
|
#define UPDATE_CLOSE 0x0004 /* update: clean up on close */
|
|
|
|
void holdrelel(struct vnode *);
|
|
void vholdl(struct vnode *);
|
|
void vref(struct vnode *);
|
|
|
|
static __inline void holdrele(struct vnode *) __unused;
|
|
static __inline void vhold(struct vnode *) __unused;
|
|
|
|
/*
|
|
* decrease buf or page ref
|
|
*/
|
|
static __inline void
|
|
holdrele(struct vnode *vp)
|
|
{
|
|
|
|
mutex_enter(vp->v_interlock);
|
|
holdrelel(vp);
|
|
mutex_exit(vp->v_interlock);
|
|
}
|
|
|
|
/*
|
|
* increase buf or page ref
|
|
*/
|
|
static __inline void
|
|
vhold(struct vnode *vp)
|
|
{
|
|
|
|
mutex_enter(vp->v_interlock);
|
|
vholdl(vp);
|
|
mutex_exit(vp->v_interlock);
|
|
}
|
|
|
|
static __inline bool
|
|
vismarker(struct vnode *vp)
|
|
{
|
|
|
|
return (vp->v_iflag & VI_MARKER) != 0;
|
|
}
|
|
|
|
#define NULLVP ((struct vnode *)NULL)
|
|
|
|
static __inline void
|
|
VN_KNOTE(struct vnode *vp, long hint)
|
|
{
|
|
|
|
mutex_enter(vp->v_interlock);
|
|
KNOTE(&vp->v_klist, hint);
|
|
mutex_exit(vp->v_interlock);
|
|
}
|
|
|
|
/*
|
|
* Global vnode data.
|
|
*/
|
|
extern struct vnode *rootvnode; /* root (i.e. "/") vnode */
|
|
extern int desiredvnodes; /* number of vnodes desired */
|
|
extern u_int numvnodes; /* current number of vnodes */
|
|
|
|
/*
|
|
* Macro/function to check for client cache inconsistency w.r.t. leasing.
|
|
*/
|
|
#define LEASE_READ 0x1 /* Check lease for readers */
|
|
#define LEASE_WRITE 0x2 /* Check lease for modifiers */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
|
|
/*
|
|
* Mods for exensibility.
|
|
*/
|
|
|
|
/*
|
|
* Flags for vdesc_flags:
|
|
*/
|
|
#define VDESC_MAX_VPS 8
|
|
/* Low order 16 flag bits are reserved for willrele flags for vp arguments. */
|
|
#define VDESC_VP0_WILLRELE 0x00000001
|
|
#define VDESC_VP1_WILLRELE 0x00000002
|
|
#define VDESC_VP2_WILLRELE 0x00000004
|
|
#define VDESC_VP3_WILLRELE 0x00000008
|
|
#define VDESC_VP0_WILLUNLOCK 0x00000100
|
|
#define VDESC_VP1_WILLUNLOCK 0x00000200
|
|
#define VDESC_VP2_WILLUNLOCK 0x00000400
|
|
#define VDESC_VP3_WILLUNLOCK 0x00000800
|
|
#define VDESC_VP0_WILLPUT 0x00000101
|
|
#define VDESC_VP1_WILLPUT 0x00000202
|
|
#define VDESC_VP2_WILLPUT 0x00000404
|
|
#define VDESC_VP3_WILLPUT 0x00000808
|
|
|
|
/*
|
|
* VDESC_NO_OFFSET is used to identify the end of the offset list
|
|
* and in places where no such field exists.
|
|
*/
|
|
#define VDESC_NO_OFFSET -1
|
|
|
|
/*
|
|
* This structure describes the vnode operation taking place.
|
|
*/
|
|
struct vnodeop_desc {
|
|
int vdesc_offset; /* offset in vector--first for speed */
|
|
const char *vdesc_name; /* a readable name for debugging */
|
|
int vdesc_flags; /* VDESC_* flags */
|
|
|
|
/*
|
|
* These ops are used by bypass routines to map and locate arguments.
|
|
* Creds and procs are not needed in bypass routines, but sometimes
|
|
* they are useful to (for example) transport layers.
|
|
* Nameidata is useful because it has a cred in it.
|
|
*/
|
|
const int *vdesc_vp_offsets; /* list ended by VDESC_NO_OFFSET */
|
|
int vdesc_vpp_offset; /* return vpp location */
|
|
int vdesc_cred_offset; /* cred location, if any */
|
|
int vdesc_componentname_offset; /* if any */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Interlock for scanning list of vnodes attached to a mountpoint
|
|
*/
|
|
extern kmutex_t mntvnode_lock;
|
|
|
|
/*
|
|
* Union filesystem hook for vn_readdir().
|
|
*/
|
|
extern int (*vn_union_readdir_hook) (struct vnode **, struct file *, struct lwp *);
|
|
|
|
/*
|
|
* Macros for offsets in the vdesc struct.
|
|
*/
|
|
#define VOPARG_OFFSETOF(type, member) offsetof(type, member)
|
|
#define VOPARG_OFFSETTO(type,offset,sp) ((type)(((char *)(sp)) + (offset)))
|
|
|
|
/*
|
|
* This structure is used to configure the new vnodeops vector.
|
|
*/
|
|
struct vnodeopv_entry_desc {
|
|
const struct vnodeop_desc *opve_op; /* which operation this is */
|
|
int (*opve_impl)(void *); /* code implementing this operation */
|
|
};
|
|
|
|
struct vnodeopv_desc {
|
|
/* ptr to the ptr to the vector where op should go */
|
|
int (***opv_desc_vector_p)(void *);
|
|
const struct vnodeopv_entry_desc *opv_desc_ops; /* null terminated list */
|
|
};
|
|
|
|
/*
|
|
* A default routine which just returns an error.
|
|
*/
|
|
int vn_default_error(void *);
|
|
|
|
/*
|
|
* A generic structure.
|
|
* This can be used by bypass routines to identify generic arguments.
|
|
*/
|
|
struct vop_generic_args {
|
|
struct vnodeop_desc *a_desc;
|
|
/* other random data follows, presumably */
|
|
};
|
|
|
|
/*
|
|
* VOCALL calls an op given an ops vector. We break it out because BSD's
|
|
* vclean changes the ops vector and then wants to call ops with the old
|
|
* vector.
|
|
*/
|
|
/*
|
|
* actually, vclean doesn't use it anymore, but nfs does,
|
|
* for device specials and fifos.
|
|
*/
|
|
#define VOCALL(OPSV,OFF,AP) (( *((OPSV)[(OFF)])) (AP))
|
|
|
|
/*
|
|
* This call works for vnodes in the kernel.
|
|
*/
|
|
#define VCALL(VP,OFF,AP) VOCALL((VP)->v_op,(OFF),(AP))
|
|
#define VDESC(OP) (& __CONCAT(OP,_desc))
|
|
#define VOFFSET(OP) (VDESC(OP)->vdesc_offset)
|
|
|
|
/* XXX This include should go away */
|
|
#include <sys/mount.h>
|
|
|
|
/*
|
|
* Finally, include the default set of vnode operations.
|
|
*/
|
|
#include <sys/vnode_if.h>
|
|
|
|
/*
|
|
* Public vnode manipulation functions.
|
|
*/
|
|
struct file;
|
|
struct filedesc;
|
|
struct nameidata;
|
|
struct proc;
|
|
struct stat;
|
|
struct uio;
|
|
struct vattr;
|
|
struct vnode;
|
|
|
|
/* see vnode(9) */
|
|
void vfs_vnode_sysinit(void);
|
|
int bdevvp(dev_t, struct vnode **);
|
|
int cdevvp(dev_t, struct vnode **);
|
|
int getnewvnode(enum vtagtype, struct mount *, int (**)(void *),
|
|
kmutex_t *, struct vnode **);
|
|
void ungetnewvnode(struct vnode *);
|
|
int vaccess(enum vtype, mode_t, uid_t, gid_t, mode_t, kauth_cred_t);
|
|
void vattr_null(struct vattr *);
|
|
void vdevgone(int, int, int, enum vtype);
|
|
int vfinddev(dev_t, enum vtype, struct vnode **);
|
|
int vflush(struct mount *, struct vnode *, int);
|
|
int vflushbuf(struct vnode *, int);
|
|
int vget(struct vnode *, int);
|
|
void vgone(struct vnode *);
|
|
int vinvalbuf(struct vnode *, int, kauth_cred_t, struct lwp *, bool, int);
|
|
void vprint(const char *, struct vnode *);
|
|
void vput(struct vnode *);
|
|
int vrecycle(struct vnode *, kmutex_t *);
|
|
void vrele(struct vnode *);
|
|
void vrele_async(struct vnode *);
|
|
void vrele_flush(void);
|
|
int vtruncbuf(struct vnode *, daddr_t, bool, int);
|
|
void vwakeup(struct buf *);
|
|
void vwait(struct vnode *, int);
|
|
void vrevoke(struct vnode *);
|
|
struct vnode *
|
|
vnalloc(struct mount *);
|
|
void vnfree(struct vnode *);
|
|
void vmark(struct vnode *, struct vnode *);
|
|
struct vnode *
|
|
vunmark(struct vnode *);
|
|
void vremfree(struct vnode *);
|
|
|
|
/* see vnsubr(9) */
|
|
int vn_bwrite(void *);
|
|
int vn_close(struct vnode *, int, kauth_cred_t);
|
|
int vn_isunder(struct vnode *, struct vnode *, struct lwp *);
|
|
int vn_lock(struct vnode *, int);
|
|
void vn_markexec(struct vnode *);
|
|
int vn_marktext(struct vnode *);
|
|
int vn_open(struct nameidata *, int, int);
|
|
int vn_rdwr(enum uio_rw, struct vnode *, void *, int, off_t, enum uio_seg,
|
|
int, kauth_cred_t, size_t *, struct lwp *);
|
|
int vn_readdir(struct file *, char *, int, u_int, int *, struct lwp *,
|
|
off_t **, int *);
|
|
int vn_stat(struct vnode *, struct stat *);
|
|
int vn_kqfilter(struct file *, struct knote *);
|
|
int vn_writechk(struct vnode *);
|
|
int vn_openchk(struct vnode *, kauth_cred_t, int);
|
|
int vn_extattr_get(struct vnode *, int, int, const char *, size_t *,
|
|
void *, struct lwp *);
|
|
int vn_extattr_set(struct vnode *, int, int, const char *, size_t,
|
|
const void *, struct lwp *);
|
|
int vn_extattr_rm(struct vnode *, int, int, const char *, struct lwp *);
|
|
void vn_ra_allocctx(struct vnode *);
|
|
int vn_fifo_bypass(void *);
|
|
|
|
/* initialise global vnode management */
|
|
void vntblinit(void);
|
|
|
|
/* misc stuff */
|
|
void vn_syncer_add_to_worklist(struct vnode *, int);
|
|
void vn_syncer_remove_from_worklist(struct vnode *);
|
|
int speedup_syncer(void);
|
|
int dorevoke(struct vnode *, kauth_cred_t);
|
|
int rawdev_mounted(struct vnode *, struct vnode **);
|
|
uint8_t vtype2dt(enum vtype);
|
|
|
|
/* see vfssubr(9) */
|
|
void vfs_getnewfsid(struct mount *);
|
|
int vfs_drainvnodes(long);
|
|
void vfs_timestamp(struct timespec *);
|
|
#if defined(DDB) || defined(DEBUGPRINT)
|
|
void vfs_vnode_print(struct vnode *, int, void (*)(const char *, ...)
|
|
__printflike(1, 2));
|
|
void vfs_mount_print(struct mount *, int, void (*)(const char *, ...)
|
|
__printflike(1, 2));
|
|
#endif /* DDB */
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_SYS_VNODE_H_ */
|