File: [Development] / xfs-linux / linux-2.4 / Attic / xfs_vnode.h (download)
Revision 1.67, Mon Oct 14 16:58:53 2002 UTC (15 years ago) by hch
Branch: MAIN
Changes since 1.66: +4 -3
lines
Revert VMAP() to the old IRIX prototype. Vnode and Linux inode are closely
tied together nowdays so that we don't have to pass in the Linux inode
separately.
Revert VMAP() to the old IRIX prototype.
|
/*
* Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_VNODE_H__
#define __XFS_VNODE_H__
/*
* Vnode types (unrelated to on-disk inodes). VNON means no type.
*/
typedef enum vtype {
VNON = 0,
VREG = 1,
VDIR = 2,
VBLK = 3,
VCHR = 4,
VLNK = 5,
VFIFO = 6,
VBAD = 7,
VSOCK = 8
} vtype_t;
typedef __u64 vnumber_t;
/*
* Define the type of behavior head used by vnodes.
*/
#define vn_bhv_head_t bhv_head_t
/*
* MP locking protocols:
* v_flag, v_vfsp VN_LOCK/VN_UNLOCK
* v_type read-only or fs-dependent
*/
typedef struct vnode {
__u32 v_flag; /* vnode flags (see below) */
enum vtype v_type; /* vnode type */
struct vfs *v_vfsp; /* ptr to containing VFS*/
vnumber_t v_number; /* in-core vnode number */
vn_bhv_head_t v_bh; /* behavior head */
spinlock_t v_lock; /* don't use VLOCK on Linux */
struct inode v_inode; /* linux inode */
#ifdef CONFIG_XFS_VNODE_TRACING
struct ktrace *v_trace; /* trace header structure */
#endif
} vnode_t;
/*
* Vnode to Linux inode mapping.
*/
#define LINVFS_GET_VP(inode) ((vnode_t *)list_entry(inode, vnode_t, v_inode))
#define LINVFS_GET_IP(vp) (&(vp)->v_inode)
/*
* Conversion between vnode types/modes and encoded type/mode as
* seen by stat(2) and mknod(2).
*/
extern enum vtype iftovt_tab[];
extern ushort vttoif_tab[];
#define IFTOVT(M) (iftovt_tab[((M) & S_IFMT) >> 12])
#define VTTOIF(T) (vttoif_tab[(int)(T)])
#define MAKEIMODE(T, M) (VTTOIF(T) | ((M) & ~S_IFMT))
/*
* Vnode flags.
*
* The vnode flags fall into two categories:
* 1) Local only -
* Flags that are relevant only to a particular cell
* 2) Single system image -
* Flags that must be maintained coherent across all cells
*/
/* Local only flags */
#define VINACT 0x1 /* vnode is being inactivated */
#define VRECLM 0x2 /* vnode is being reclaimed */
#define VWAIT 0x4 /* waiting for VINACT
or VRECLM to finish */
#define VMODIFIED 0x8 /* xfs inode state possibly different
* from linux inode state.
*/
/* Single system image flags */
#define VROOT 0x100000 /* root of its file system */
#define VNOSWAP 0x200000 /* cannot be used as virt swap device */
#define VISSWAP 0x400000 /* vnode is part of virt swap device */
#define VREPLICABLE 0x800000 /* Vnode can have replicated pages */
#define VNONREPLICABLE 0x1000000 /* Vnode has writers. Don't replicate */
#define VDOCMP 0x2000000 /* Vnode has special VOP_CMP impl. */
#define VSHARE 0x4000000 /* vnode part of global cache */
/* VSHARE applies to local cell only */
#define VFRLOCKS 0x8000000 /* vnode has FR locks applied */
#define VENF_LOCKING 0x10000000 /* enf. mode FR locking in effect */
#define VOPLOCK 0x20000000 /* oplock set on the vnode */
#define VPURGE 0x40000000 /* In the linux 'put' thread */
typedef enum vrwlock { VRWLOCK_NONE, VRWLOCK_READ,
VRWLOCK_WRITE, VRWLOCK_WRITE_DIRECT,
VRWLOCK_TRY_READ, VRWLOCK_TRY_WRITE } vrwlock_t;
/*
* Return values for VOP_INACTIVE. A return value of
* VN_INACTIVE_NOCACHE implies that the file system behavior
* has disassociated its state and bhv_desc_t from the vnode.
*/
#define VN_INACTIVE_CACHE 0
#define VN_INACTIVE_NOCACHE 1
/*
* Values for the cmd code given to VOP_VNODE_CHANGE.
*/
typedef enum vchange {
VCHANGE_FLAGS_FRLOCKS = 0,
VCHANGE_FLAGS_ENF_LOCKING = 1,
VCHANGE_FLAGS_TRUNCATED = 2,
VCHANGE_FLAGS_PAGE_DIRTY = 3,
VCHANGE_FLAGS_IOEXCL_COUNT = 4
} vchange_t;
/*
* Macros for dealing with the behavior descriptor inside of the vnode.
*/
#define BHV_TO_VNODE(bdp) ((vnode_t *)BHV_VOBJ(bdp))
#define BHV_TO_VNODE_NULL(bdp) ((vnode_t *)BHV_VOBJNULL(bdp))
#define VNODE_TO_FIRST_BHV(vp) (BHV_HEAD_FIRST(&(vp)->v_bh))
#define VN_BHV_HEAD(vp) ((vn_bhv_head_t *)(&((vp)->v_bh)))
#define VN_BHV_READ_LOCK(bhp) BHV_READ_LOCK(bhp)
#define VN_BHV_READ_UNLOCK(bhp) BHV_READ_UNLOCK(bhp)
#define VN_BHV_WRITE_LOCK(bhp) BHV_WRITE_LOCK(bhp)
#define VN_BHV_NOT_READ_LOCKED(bhp) BHV_NOT_READ_LOCKED(bhp)
#define VN_BHV_NOT_WRITE_LOCKED(bhp) BHV_NOT_WRITE_LOCKED(bhp)
#define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
#define vn_bhv_head_reinit(bhp) bhv_head_reinit(bhp)
#define vn_bhv_insert_initial(bhp,bdp) bhv_insert_initial(bhp,bdp)
#define vn_bhv_remove(bhp,bdp) bhv_remove(bhp,bdp)
#define vn_bhv_lookup(bhp,ops) bhv_lookup(bhp,ops)
#define vn_bhv_lookup_unlocked(bhp,ops) bhv_lookup_unlocked(bhp,ops)
#define v_fbhv v_bh.bh_first /* first behavior */
#define v_fops v_bh.bh_first->bd_ops /* ops for first behavior */
struct uio;
struct file;
struct vattr;
struct page_buf_bmap_s;
struct attrlist_cursor_kern;
typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct file *, char *, size_t,
loff_t *, struct cred *);
typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct file *, const char *, size_t,
loff_t *, struct cred *);
typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *, unsigned int, unsigned long);
typedef int (*vop_getattr_t)(bhv_desc_t *, struct vattr *, int,
struct cred *);
typedef int (*vop_setattr_t)(bhv_desc_t *, struct vattr *, int,
struct cred *);
typedef int (*vop_access_t)(bhv_desc_t *, int, struct cred *);
typedef int (*vop_lookup_t)(bhv_desc_t *, struct dentry *, vnode_t **,
int, vnode_t *, struct cred *);
typedef int (*vop_create_t)(bhv_desc_t *, struct dentry *, struct vattr *,
vnode_t **, struct cred *);
typedef int (*vop_remove_t)(bhv_desc_t *, struct dentry *, struct cred *);
typedef int (*vop_link_t)(bhv_desc_t *, vnode_t *, struct dentry *,
struct cred *);
typedef int (*vop_rename_t)(bhv_desc_t *, struct dentry *, vnode_t *,
struct dentry *, struct cred *);
typedef int (*vop_mkdir_t)(bhv_desc_t *, struct dentry *, struct vattr *,
vnode_t **, struct cred *);
typedef int (*vop_rmdir_t)(bhv_desc_t *, struct dentry *, struct cred *);
typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
int *);
typedef int (*vop_symlink_t)(bhv_desc_t *, struct dentry *,
struct vattr *, char *,
vnode_t **, struct cred *);
typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, struct cred *);
typedef int (*vop_fsync_t)(bhv_desc_t *, int, struct cred *, xfs_off_t, xfs_off_t);
typedef int (*vop_inactive_t)(bhv_desc_t *, struct cred *);
typedef int (*vop_fid2_t)(bhv_desc_t *, struct fid *);
typedef int (*vop_release_t)(bhv_desc_t *);
typedef int (*vop_rwlock_t)(bhv_desc_t *, vrwlock_t);
typedef void (*vop_rwunlock_t)(bhv_desc_t *, vrwlock_t);
typedef int (*vop_bmap_t)(bhv_desc_t *, xfs_off_t, ssize_t, int, struct page_buf_bmap_s *, int *);
typedef int (*vop_reclaim_t)(bhv_desc_t *);
typedef int (*vop_attr_get_t)(bhv_desc_t *, char *, char *, int *, int,
struct cred *);
typedef int (*vop_attr_set_t)(bhv_desc_t *, char *, char *, int, int,
struct cred *);
typedef int (*vop_attr_remove_t)(bhv_desc_t *, char *, int, struct cred *);
typedef int (*vop_attr_list_t)(bhv_desc_t *, char *, int, int,
struct attrlist_cursor_kern *, struct cred *);
typedef void (*vop_link_removed_t)(bhv_desc_t *, vnode_t *, int);
typedef void (*vop_vnode_change_t)(bhv_desc_t *, vchange_t, __psint_t);
typedef void (*vop_ptossvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
typedef void (*vop_pflushinvalvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, int);
typedef int (*vop_pflushvp_t)(bhv_desc_t *, xfs_off_t, xfs_off_t, uint64_t, int);
typedef int (*vop_iflush_t)(bhv_desc_t *, int);
typedef struct vnodeops {
bhv_position_t vn_position; /* position within behavior chain */
vop_open_t vop_open;
vop_read_t vop_read;
vop_write_t vop_write;
vop_ioctl_t vop_ioctl;
vop_getattr_t vop_getattr;
vop_setattr_t vop_setattr;
vop_access_t vop_access;
vop_lookup_t vop_lookup;
vop_create_t vop_create;
vop_remove_t vop_remove;
vop_link_t vop_link;
vop_rename_t vop_rename;
vop_mkdir_t vop_mkdir;
vop_rmdir_t vop_rmdir;
vop_readdir_t vop_readdir;
vop_symlink_t vop_symlink;
vop_readlink_t vop_readlink;
vop_fsync_t vop_fsync;
vop_inactive_t vop_inactive;
vop_fid2_t vop_fid2;
vop_rwlock_t vop_rwlock;
vop_rwunlock_t vop_rwunlock;
vop_bmap_t vop_bmap;
vop_reclaim_t vop_reclaim;
vop_attr_get_t vop_attr_get;
vop_attr_set_t vop_attr_set;
vop_attr_remove_t vop_attr_remove;
vop_attr_list_t vop_attr_list;
vop_link_removed_t vop_link_removed;
vop_vnode_change_t vop_vnode_change;
vop_ptossvp_t vop_tosspages;
vop_pflushinvalvp_t vop_flushinval_pages;
vop_pflushvp_t vop_flush_pages;
vop_release_t vop_release;
vop_iflush_t vop_iflush;
} vnodeops_t;
/*
* VOP's.
*/
#define _VOP_(op, vp) (*((vnodeops_t *)(vp)->v_fops)->op)
#define VOP_READ(vp,file,buf,size,offset,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,buf,size,offset,cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_WRITE(vp,file,buf,size,offset,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,buf,size,offset,cr);\
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_BMAP(vp,of,sz,rw,b,n,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_OPEN(vp, cr, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_GETATTR(vp, vap, f, cr, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_SETATTR(vp, vap, f, cr, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_ACCESS(vp, mode, cr, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_access, vp)((vp)->v_fbhv, mode, cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_CREATE(dvp,d,vap,vpp,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(dvp)->v_bh); \
rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr); \
VN_BHV_READ_UNLOCK(&(dvp)->v_bh); \
}
#define VOP_REMOVE(dvp,d,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(dvp)->v_bh); \
rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr); \
VN_BHV_READ_UNLOCK(&(dvp)->v_bh); \
}
#define VOP_LINK(tdvp,fvp,d,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(tdvp)->v_bh); \
rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr); \
VN_BHV_READ_UNLOCK(&(tdvp)->v_bh); \
}
#define VOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(fvp)->v_bh); \
rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr); \
VN_BHV_READ_UNLOCK(&(fvp)->v_bh); \
}
#define VOP_MKDIR(dp,d,vap,vpp,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(dp)->v_bh); \
rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr); \
VN_BHV_READ_UNLOCK(&(dp)->v_bh); \
}
#define VOP_RMDIR(dp,d,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(dp)->v_bh); \
rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr); \
VN_BHV_READ_UNLOCK(&(dp)->v_bh); \
}
#define VOP_READDIR(vp,uiop,cr,eofp,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(dvp)->v_bh); \
rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr); \
VN_BHV_READ_UNLOCK(&(dvp)->v_bh); \
}
#define VOP_READLINK(vp,uiop,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_FSYNC(vp,f,cr,b,e,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_INACTIVE(vp, cr, rv) \
{ /* vnode not reference-able, so no need to lock chain */ \
rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr); \
}
#define VOP_RELEASE(vp, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_release, vp)((vp)->v_fbhv); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_FID2(vp, fidp, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_RWLOCK(vp,i) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
(void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i); \
/* "allow" is done by rwunlock */ \
}
#define VOP_RWLOCK_TRY(vp,i) \
_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
#define VOP_RWUNLOCK(vp,i) \
{ /* "prevent" was done by rwlock */ \
(void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_RECLAIM(vp, rv) \
{ /* vnode not reference-able, so no need to lock chain */ \
rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv); \
}
#define VOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_ATTR_REMOVE(vp, name, flags, cred, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred);\
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_LINK_REMOVED(vp, dvp, linkzero) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
(void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_VNODE_CHANGE(vp, cmd, val) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
(void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
/*
* These are page cache functions that now go thru VOPs.
* 'last' parameter is unused and left in for IRIX compatibility
*/
#define VOP_TOSS_PAGES(vp, first, last, fiopt) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
_VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
/*
* 'last' parameter is unused and left in for IRIX compatibility
*/
#define VOP_FLUSHINVAL_PAGES(vp, first, last, fiopt) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
_VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
/*
* 'last' parameter is unused and left in for IRIX compatibility
*/
#define VOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt);\
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_IOCTL(vp, inode, filp, cmd, arg, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,cmd,arg); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_IFLUSH(vp, flags, rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
/*
* Flags for VOP_IFLUSH call
*/
#define FLUSH_SYNC 1 /* wait for flush to complete */
#define FLUSH_INODE 2 /* flush the inode itself */
#define FLUSH_LOG 4 /* force the last log entry for
* this inode out to disk */
/*
* Flush/Invalidate options for VOP_TOSS_PAGES, VOP_FLUSHINVAL_PAGES and
* VOP_FLUSH_PAGES.
*/
#define FI_NONE 0 /* none */
#define FI_REMAPF 1 /* Do a remapf prior to the operation */
#define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
Prevent VM access to the pages until
the operation completes. */
/*
* Vnode attributes. va_mask indicates those attributes the caller
* wants to set (setattr) or extract (getattr).
*/
typedef struct vattr {
int va_mask; /* bit-mask of attributes */
vtype_t va_type; /* vnode type (for create) */
mode_t va_mode; /* file access mode */
uid_t va_uid; /* owner user id */
gid_t va_gid; /* owner group id */
xfs_dev_t va_fsid; /* file system id (dev for now) */
xfs_ino_t va_nodeid; /* node id */
nlink_t va_nlink; /* number of references to file */
xfs_off_t va_size; /* file size in bytes */
timespec_t va_atime; /* time of last access */
timespec_t va_mtime; /* time of last modification */
timespec_t va_ctime; /* time file ``created'' */
xfs_dev_t va_rdev; /* device the file represents */
u_long va_blksize; /* fundamental block size */
__int64_t va_nblocks; /* # of blocks allocated */
u_long va_vcode; /* version code */
u_long va_xflags; /* random extended file flags */
u_long va_extsize; /* file extent size */
u_long va_nextents; /* number of extents in file */
u_long va_anextents; /* number of attr extents in file */
int va_projid; /* project id */
u_int va_gencount; /* object generation count */
} vattr_t;
/*
* setattr or getattr attributes
*/
#define AT_TYPE 0x00000001
#define AT_MODE 0x00000002
#define AT_UID 0x00000004
#define AT_GID 0x00000008
#define AT_FSID 0x00000010
#define AT_NODEID 0x00000020
#define AT_NLINK 0x00000040
#define AT_SIZE 0x00000080
#define AT_ATIME 0x00000100
#define AT_MTIME 0x00000200
#define AT_CTIME 0x00000400
#define AT_RDEV 0x00000800
#define AT_BLKSIZE 0x00001000
#define AT_NBLOCKS 0x00002000
#define AT_VCODE 0x00004000
#define AT_MAC 0x00008000
#define AT_UPDATIME 0x00010000
#define AT_UPDMTIME 0x00020000
#define AT_UPDCTIME 0x00040000
#define AT_ACL 0x00080000
#define AT_CAP 0x00100000
#define AT_INF 0x00200000
#define AT_XFLAGS 0x00400000
#define AT_EXTSIZE 0x00800000
#define AT_NEXTENTS 0x01000000
#define AT_ANEXTENTS 0x02000000
#define AT_PROJID 0x04000000
#define AT_SIZE_NOPERM 0x08000000
#define AT_GENCOUNT 0x10000000
#define AT_ALL (AT_TYPE|AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|\
AT_NLINK|AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|AT_RDEV|\
AT_BLKSIZE|AT_NBLOCKS|AT_VCODE|AT_MAC|AT_ACL|AT_CAP|\
AT_INF|AT_XFLAGS|AT_EXTSIZE|AT_NEXTENTS|AT_ANEXTENTS|\
AT_PROJID|AT_GENCOUNT)
#define AT_STAT (AT_TYPE|AT_MODE|AT_UID|AT_GID|AT_FSID|AT_NODEID|AT_NLINK|\
AT_SIZE|AT_ATIME|AT_MTIME|AT_CTIME|AT_RDEV|AT_BLKSIZE|\
AT_NBLOCKS|AT_PROJID)
#define AT_TIMES (AT_ATIME|AT_MTIME|AT_CTIME)
#define AT_UPDTIMES (AT_UPDATIME|AT_UPDMTIME|AT_UPDCTIME)
#define AT_NOSET (AT_NLINK|AT_RDEV|AT_FSID|AT_NODEID|AT_TYPE|\
AT_BLKSIZE|AT_NBLOCKS|AT_VCODE|AT_NEXTENTS|AT_ANEXTENTS|\
AT_GENCOUNT)
#define VREAD 00400
#define VWRITE 00200
#define VEXEC 00100
#define VSGID 02000 /* set group id on execution */
#define MODEMASK 07777 /* mode bits plus permission bits */
/*
* Check whether mandatory file locking is enabled.
*/
#define MANDLOCK(vp, mode) \
((vp)->v_type == VREG && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
extern void vn_init(void);
extern int vn_wait(struct vnode *);
extern vnode_t *vn_initialize(struct inode *);
/*
* Acquiring and invalidating vnodes:
*
* if (vn_get(vp, version, 0))
* ...;
* vn_purge(vp, version);
*
* vn_get and vn_purge must be called with vmap_t arguments, sampled
* while a lock that the vnode's VOP_RECLAIM function acquires is
* held, to ensure that the vnode sampled with the lock held isn't
* recycled (VOP_RECLAIMed) or deallocated between the release of the lock
* and the subsequent vn_get or vn_purge.
*/
/*
* vnode_map structures _must_ match vn_epoch and vnode structure sizes.
*/
typedef struct vnode_map {
vfs_t *v_vfsp;
vnumber_t v_number; /* in-core vnode number */
xfs_ino_t v_ino; /* inode # */
} vmap_t;
#define VMAP(vp, vmap) {(vmap).v_vfsp = (vp)->v_vfsp, \
(vmap).v_number = (vp)->v_number, \
(vmap).v_ino = (vp)->v_inode.i_ino; }
extern void vn_purge(struct vnode *, vmap_t *);
extern vnode_t *vn_get(struct vnode *, vmap_t *);
extern int vn_revalidate(struct vnode *);
extern void vn_remove(struct vnode *);
static inline int vn_count(struct vnode *vp)
{
return atomic_read(&LINVFS_GET_IP(vp)->i_count);
}
/*
* Vnode reference counting functions (and macros for compatibility).
*/
extern vnode_t *vn_hold(struct vnode *);
extern void vn_rele(struct vnode *);
#if defined(CONFIG_XFS_VNODE_TRACING)
#define VN_HOLD(vp) \
((void)vn_hold(vp), \
vn_trace_hold(vp, __FILE__, __LINE__, (inst_t *)__return_address))
#define VN_RELE(vp) \
(vn_trace_rele(vp, __FILE__, __LINE__, (inst_t *)__return_address), \
iput(LINVFS_GET_IP(vp)))
#else /* ! (defined(CONFIG_XFS_VNODE_TRACING)) */
#define VN_HOLD(vp) ((void)vn_hold(vp))
#define VN_RELE(vp) (iput(LINVFS_GET_IP(vp)))
#endif /* ! (defined(CONFIG_XFS_VNODE_TRACING) */
/*
* Vnode spinlock manipulation.
*/
#define VN_FLAGSET(vp,b) vn_flagset(vp,b)
#define VN_FLAGCLR(vp,b) vn_flagclr(vp,b)
static __inline__ void vn_flagset(struct vnode *vp, uint flag)
{
spin_lock(&vp->v_lock);
vp->v_flag |= flag;
spin_unlock(&vp->v_lock);
}
static __inline__ void vn_flagclr(struct vnode *vp, uint flag)
{
spin_lock(&vp->v_lock);
vp->v_flag &= ~flag;
spin_unlock(&vp->v_lock);
}
/*
* Some useful predicates.
*/
#define VN_MAPPED(vp) ((LINVFS_GET_IP(vp)->i_mapping->i_mmap != NULL) || \
(LINVFS_GET_IP(vp)->i_mapping->i_mmap_shared != NULL))
#define VN_CACHED(vp) (LINVFS_GET_IP(vp)->i_mapping->nrpages)
#define VN_DIRTY(vp) (!list_empty(&(LINVFS_GET_IP(vp)->i_dirty_data_buffers)))
#define VMODIFY(vp) { VN_FLAGSET(vp, VMODIFIED); \
mark_inode_dirty(LINVFS_GET_IP(vp)); }
#define VUNMODIFY(vp) VN_FLAGCLR(vp, VMODIFIED)
/*
* Flags to VOP_SETATTR/VOP_GETATTR.
*/
#define ATTR_UTIME 0x01 /* non-default utime(2) request */
#define ATTR_EXEC 0x02 /* invocation from exec(2) */
#define ATTR_COMM 0x04 /* yield common vp attributes */
#define ATTR_DMI 0x08 /* invocation from a DMI function */
#define ATTR_LAZY 0x80 /* set/get attributes lazily */
#define ATTR_NONBLOCK 0x100 /* return EAGAIN if operation would block */
#define ATTR_NOLOCK 0x200 /* Don't grab any conflicting locks */
#define ATTR_NOSIZETOK 0x400 /* Don't get the DVN_SIZE_READ token */
/*
* Flags to VOP_FSYNC and VOP_RECLAIM.
*/
#define FSYNC_NOWAIT 0 /* asynchronous flush */
#define FSYNC_WAIT 0x1 /* synchronous fsync or forced reclaim */
#define FSYNC_INVAL 0x2 /* flush and invalidate cached data */
#define FSYNC_DATA 0x4 /* synchronous fsync of data only */
#if (defined(CONFIG_XFS_VNODE_TRACING))
#define VNODE_TRACE_SIZE 16 /* number of trace entries */
/*
* Tracing entries.
*/
#define VNODE_KTRACE_ENTRY 1
#define VNODE_KTRACE_EXIT 2
#define VNODE_KTRACE_HOLD 3
#define VNODE_KTRACE_REF 4
#define VNODE_KTRACE_RELE 5
extern void vn_trace_entry(struct vnode *, char *, inst_t *);
extern void vn_trace_exit(struct vnode *, char *, inst_t *);
extern void vn_trace_hold(struct vnode *, char *, int, inst_t *);
extern void vn_trace_ref(struct vnode *, char *, int, inst_t *);
extern void vn_trace_rele(struct vnode *, char *, int, inst_t *);
#define VN_TRACE(vp) \
vn_trace_ref(vp, __FILE__, __LINE__, (inst_t *)__return_address)
#else /* ! (defined(CONFIG_XFS_VNODE_TRACING)) */
#define vn_trace_entry(a,b,c)
#define vn_trace_exit(a,b,c)
#define vn_trace_hold(a,b,c,d)
#define vn_trace_ref(a,b,c,d)
#define vn_trace_rele(a,b,c,d)
#define VN_TRACE(vp)
#endif /* ! (defined(CONFIG_XFS_VNODE_TRACING)) */
#endif /* __XFS_VNODE_H__ */
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