summaryrefslogtreecommitdiffstats
path: root/fs/xfs/linux-2.6/xfs_vnode.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_vnode.h')
-rw-r--r--fs/xfs/linux-2.6/xfs_vnode.h666
1 files changed, 666 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
new file mode 100644
index 0000000..da76c1f
--- /dev/null
+++ b/fs/xfs/linux-2.6/xfs_vnode.h
@@ -0,0 +1,666 @@
+/*
+ * Copyright (c) 2000-2003 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/
+ *
+ * Portions 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.
+ */
+#ifndef __XFS_VNODE_H__
+#define __XFS_VNODE_H__
+
+struct uio;
+struct file;
+struct vattr;
+struct xfs_iomap;
+struct attrlist_cursor_kern;
+
+/*
+ * Vnode types. VNON means no type.
+ */
+enum vtype { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VFIFO, VBAD, VSOCK };
+
+typedef xfs_ino_t vnumber_t;
+typedef struct dentry vname_t;
+typedef bhv_head_t vn_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; /* VN_LOCK/VN_UNLOCK */
+ struct inode v_inode; /* Linux inode */
+#ifdef XFS_VNODE_TRACE
+ struct ktrace *v_trace; /* trace header structure */
+#endif
+} vnode_t;
+
+#define v_fbhv v_bh.bh_first /* first behavior */
+#define v_fops v_bh.bh_first->bd_ops /* first behavior ops */
+
+#define VNODE_POSITION_BASE BHV_POSITION_BASE /* chain bottom */
+#define VNODE_POSITION_TOP BHV_POSITION_TOP /* chain top */
+#define VNODE_POSITION_INVALID BHV_POSITION_INVALID /* invalid pos. num */
+
+typedef enum {
+ VN_BHV_UNKNOWN, /* not specified */
+ VN_BHV_XFS, /* xfs */
+ VN_BHV_DM, /* data migration */
+ VN_BHV_QM, /* quota manager */
+ VN_BHV_IO, /* IO path */
+ VN_BHV_END /* housekeeping end-of-range */
+} vn_bhv_t;
+
+#define VNODE_POSITION_XFS (VNODE_POSITION_BASE)
+#define VNODE_POSITION_DM (VNODE_POSITION_BASE+10)
+#define VNODE_POSITION_QM (VNODE_POSITION_BASE+20)
+#define VNODE_POSITION_IO (VNODE_POSITION_BASE+30)
+
+/*
+ * 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 VN_BHV_HEAD(vp) ((bhv_head_t *)(&((vp)->v_bh)))
+#define vn_bhv_head_init(bhp,name) bhv_head_init(bhp,name)
+#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)
+
+/*
+ * 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)
+
+/*
+ * Convert between vnode types and inode formats (since POSIX.1
+ * defines mode word of stat structure in terms of inode formats).
+ */
+extern enum vtype iftovt_tab[];
+extern u_short 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))
+
+
+/*
+ * Vnode flags.
+ */
+#define VINACT 0x1 /* vnode is being inactivated */
+#define VRECLM 0x2 /* vnode is being reclaimed */
+#define VWAIT 0x4 /* waiting for VINACT/VRECLM to end */
+#define VMODIFIED 0x8 /* XFS inode state possibly differs */
+ /* to the Linux inode state. */
+
+/*
+ * Values for the VOP_RWLOCK and VOP_RWUNLOCK flags parameter.
+ */
+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;
+
+
+typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
+typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct kiocb *,
+ const struct iovec *, unsigned int,
+ loff_t *, int, struct cred *);
+typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct kiocb *,
+ const struct iovec *, unsigned int,
+ loff_t *, int, struct cred *);
+typedef ssize_t (*vop_sendfile_t)(bhv_desc_t *, struct file *,
+ loff_t *, int, size_t, read_actor_t,
+ void *, struct cred *);
+typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *,
+ int, unsigned int, void __user *);
+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 *, vname_t *, vnode_t **,
+ int, vnode_t *, struct cred *);
+typedef int (*vop_create_t)(bhv_desc_t *, vname_t *, struct vattr *,
+ vnode_t **, struct cred *);
+typedef int (*vop_remove_t)(bhv_desc_t *, vname_t *, struct cred *);
+typedef int (*vop_link_t)(bhv_desc_t *, vnode_t *, vname_t *,
+ struct cred *);
+typedef int (*vop_rename_t)(bhv_desc_t *, vname_t *, vnode_t *, vname_t *,
+ struct cred *);
+typedef int (*vop_mkdir_t)(bhv_desc_t *, vname_t *, struct vattr *,
+ vnode_t **, struct cred *);
+typedef int (*vop_rmdir_t)(bhv_desc_t *, vname_t *, struct cred *);
+typedef int (*vop_readdir_t)(bhv_desc_t *, struct uio *, struct cred *,
+ int *);
+typedef int (*vop_symlink_t)(bhv_desc_t *, vname_t *, struct vattr *,
+ char *, vnode_t **, struct cred *);
+typedef int (*vop_readlink_t)(bhv_desc_t *, struct uio *, int,
+ 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 xfs_iomap *, 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_sendfile_t vop_sendfile;
+ 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,iov,segs,offset,ioflags,cr,rv) \
+ rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
+#define VOP_WRITE(vp,file,iov,segs,offset,ioflags,cr,rv) \
+ rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,iov,segs,offset,ioflags,cr)
+#define VOP_SENDFILE(vp,f,off,ioflags,cnt,act,targ,cr,rv) \
+ rv = _VOP_(vop_sendfile, vp)((vp)->v_fbhv,f,off,ioflags,cnt,act,targ,cr)
+#define VOP_BMAP(vp,of,sz,rw,b,n,rv) \
+ rv = _VOP_(vop_bmap, vp)((vp)->v_fbhv,of,sz,rw,b,n)
+#define VOP_OPEN(vp, cr, rv) \
+ rv = _VOP_(vop_open, vp)((vp)->v_fbhv, cr)
+#define VOP_GETATTR(vp, vap, f, cr, rv) \
+ rv = _VOP_(vop_getattr, vp)((vp)->v_fbhv, vap, f, cr)
+#define VOP_SETATTR(vp, vap, f, cr, rv) \
+ rv = _VOP_(vop_setattr, vp)((vp)->v_fbhv, vap, f, cr)
+#define VOP_ACCESS(vp, mode, cr, rv) \
+ rv = _VOP_(vop_access, vp)((vp)->v_fbhv, mode, cr)
+#define VOP_LOOKUP(vp,d,vpp,f,rdir,cr,rv) \
+ rv = _VOP_(vop_lookup, vp)((vp)->v_fbhv,d,vpp,f,rdir,cr)
+#define VOP_CREATE(dvp,d,vap,vpp,cr,rv) \
+ rv = _VOP_(vop_create, dvp)((dvp)->v_fbhv,d,vap,vpp,cr)
+#define VOP_REMOVE(dvp,d,cr,rv) \
+ rv = _VOP_(vop_remove, dvp)((dvp)->v_fbhv,d,cr)
+#define VOP_LINK(tdvp,fvp,d,cr,rv) \
+ rv = _VOP_(vop_link, tdvp)((tdvp)->v_fbhv,fvp,d,cr)
+#define VOP_RENAME(fvp,fnm,tdvp,tnm,cr,rv) \
+ rv = _VOP_(vop_rename, fvp)((fvp)->v_fbhv,fnm,tdvp,tnm,cr)
+#define VOP_MKDIR(dp,d,vap,vpp,cr,rv) \
+ rv = _VOP_(vop_mkdir, dp)((dp)->v_fbhv,d,vap,vpp,cr)
+#define VOP_RMDIR(dp,d,cr,rv) \
+ rv = _VOP_(vop_rmdir, dp)((dp)->v_fbhv,d,cr)
+#define VOP_READDIR(vp,uiop,cr,eofp,rv) \
+ rv = _VOP_(vop_readdir, vp)((vp)->v_fbhv,uiop,cr,eofp)
+#define VOP_SYMLINK(dvp,d,vap,tnm,vpp,cr,rv) \
+ rv = _VOP_(vop_symlink, dvp) ((dvp)->v_fbhv,d,vap,tnm,vpp,cr)
+#define VOP_READLINK(vp,uiop,fl,cr,rv) \
+ rv = _VOP_(vop_readlink, vp)((vp)->v_fbhv,uiop,fl,cr)
+#define VOP_FSYNC(vp,f,cr,b,e,rv) \
+ rv = _VOP_(vop_fsync, vp)((vp)->v_fbhv,f,cr,b,e)
+#define VOP_INACTIVE(vp, cr, rv) \
+ rv = _VOP_(vop_inactive, vp)((vp)->v_fbhv, cr)
+#define VOP_RELEASE(vp, rv) \
+ rv = _VOP_(vop_release, vp)((vp)->v_fbhv)
+#define VOP_FID2(vp, fidp, rv) \
+ rv = _VOP_(vop_fid2, vp)((vp)->v_fbhv, fidp)
+#define VOP_RWLOCK(vp,i) \
+ (void)_VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
+#define VOP_RWLOCK_TRY(vp,i) \
+ _VOP_(vop_rwlock, vp)((vp)->v_fbhv, i)
+#define VOP_RWUNLOCK(vp,i) \
+ (void)_VOP_(vop_rwunlock, vp)((vp)->v_fbhv, i)
+#define VOP_FRLOCK(vp,c,fl,flags,offset,fr,rv) \
+ rv = _VOP_(vop_frlock, vp)((vp)->v_fbhv,c,fl,flags,offset,fr)
+#define VOP_RECLAIM(vp, rv) \
+ rv = _VOP_(vop_reclaim, vp)((vp)->v_fbhv)
+#define VOP_ATTR_GET(vp, name, val, vallenp, fl, cred, rv) \
+ rv = _VOP_(vop_attr_get, vp)((vp)->v_fbhv,name,val,vallenp,fl,cred)
+#define VOP_ATTR_SET(vp, name, val, vallen, fl, cred, rv) \
+ rv = _VOP_(vop_attr_set, vp)((vp)->v_fbhv,name,val,vallen,fl,cred)
+#define VOP_ATTR_REMOVE(vp, name, flags, cred, rv) \
+ rv = _VOP_(vop_attr_remove, vp)((vp)->v_fbhv,name,flags,cred)
+#define VOP_ATTR_LIST(vp, buf, buflen, fl, cursor, cred, rv) \
+ rv = _VOP_(vop_attr_list, vp)((vp)->v_fbhv,buf,buflen,fl,cursor,cred)
+#define VOP_LINK_REMOVED(vp, dvp, linkzero) \
+ (void)_VOP_(vop_link_removed, vp)((vp)->v_fbhv, dvp, linkzero)
+#define VOP_VNODE_CHANGE(vp, cmd, val) \
+ (void)_VOP_(vop_vnode_change, vp)((vp)->v_fbhv,cmd,val)
+/*
+ * 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) \
+ _VOP_(vop_tosspages, vp)((vp)->v_fbhv,first, last, fiopt)
+/*
+ * 'last' parameter is unused and left in for IRIX compatibility
+ */
+#define VOP_FLUSHINVAL_PAGES(vp, first, last, fiopt) \
+ _VOP_(vop_flushinval_pages, vp)((vp)->v_fbhv,first,last,fiopt)
+/*
+ * 'last' parameter is unused and left in for IRIX compatibility
+ */
+#define VOP_FLUSH_PAGES(vp, first, last, flags, fiopt, rv) \
+ rv = _VOP_(vop_flush_pages, vp)((vp)->v_fbhv,first,last,flags,fiopt)
+#define VOP_IOCTL(vp, inode, filp, fl, cmd, arg, rv) \
+ rv = _VOP_(vop_ioctl, vp)((vp)->v_fbhv,inode,filp,fl,cmd,arg)
+#define VOP_IFLUSH(vp, flags, rv) \
+ rv = _VOP_(vop_iflush, vp)((vp)->v_fbhv, flags)
+
+/*
+ * Flags for read/write calls - same values as IRIX
+ */
+#define IO_ISAIO 0x00001 /* don't wait for completion */
+#define IO_ISDIRECT 0x00004 /* bypass page cache */
+#define IO_INVIS 0x00020 /* don't update inode timestamps */
+
+/*
+ * 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 or extract.
+ */
+typedef struct vattr {
+ int va_mask; /* bit-mask of attributes present */
+ enum vtype va_type; /* vnode type (for create) */
+ mode_t va_mode; /* file 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 */
+ xfs_ino_t va_nodeid; /* file id */
+ xfs_off_t va_size; /* file size in bytes */
+ u_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 */
+ u_int va_gen; /* generation number of file */
+ xfs_dev_t va_rdev; /* device the special file represents */
+ __int64_t va_nblocks; /* number of blocks allocated */
+ 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 */
+} vattr_t;
+
+/*
+ * setattr or getattr attributes
+ */
+#define XFS_AT_TYPE 0x00000001
+#define XFS_AT_MODE 0x00000002
+#define XFS_AT_UID 0x00000004
+#define XFS_AT_GID 0x00000008
+#define XFS_AT_FSID 0x00000010
+#define XFS_AT_NODEID 0x00000020
+#define XFS_AT_NLINK 0x00000040
+#define XFS_AT_SIZE 0x00000080
+#define XFS_AT_ATIME 0x00000100
+#define XFS_AT_MTIME 0x00000200
+#define XFS_AT_CTIME 0x00000400
+#define XFS_AT_RDEV 0x00000800
+#define XFS_AT_BLKSIZE 0x00001000
+#define XFS_AT_NBLOCKS 0x00002000
+#define XFS_AT_VCODE 0x00004000
+#define XFS_AT_MAC 0x00008000
+#define XFS_AT_UPDATIME 0x00010000
+#define XFS_AT_UPDMTIME 0x00020000
+#define XFS_AT_UPDCTIME 0x00040000
+#define XFS_AT_ACL 0x00080000
+#define XFS_AT_CAP 0x00100000
+#define XFS_AT_INF 0x00200000
+#define XFS_AT_XFLAGS 0x00400000
+#define XFS_AT_EXTSIZE 0x00800000
+#define XFS_AT_NEXTENTS 0x01000000
+#define XFS_AT_ANEXTENTS 0x02000000
+#define XFS_AT_PROJID 0x04000000
+#define XFS_AT_SIZE_NOPERM 0x08000000
+#define XFS_AT_GENCOUNT 0x10000000
+
+#define XFS_AT_ALL (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
+ XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
+ XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
+ XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|XFS_AT_MAC|\
+ XFS_AT_ACL|XFS_AT_CAP|XFS_AT_INF|XFS_AT_XFLAGS|XFS_AT_EXTSIZE|\
+ XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_PROJID|XFS_AT_GENCOUNT)
+
+#define XFS_AT_STAT (XFS_AT_TYPE|XFS_AT_MODE|XFS_AT_UID|XFS_AT_GID|\
+ XFS_AT_FSID|XFS_AT_NODEID|XFS_AT_NLINK|XFS_AT_SIZE|\
+ XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME|XFS_AT_RDEV|\
+ XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_PROJID)
+
+#define XFS_AT_TIMES (XFS_AT_ATIME|XFS_AT_MTIME|XFS_AT_CTIME)
+
+#define XFS_AT_UPDTIMES (XFS_AT_UPDATIME|XFS_AT_UPDMTIME|XFS_AT_UPDCTIME)
+
+#define XFS_AT_NOSET (XFS_AT_NLINK|XFS_AT_RDEV|XFS_AT_FSID|XFS_AT_NODEID|\
+ XFS_AT_TYPE|XFS_AT_BLKSIZE|XFS_AT_NBLOCKS|XFS_AT_VCODE|\
+ XFS_AT_NEXTENTS|XFS_AT_ANEXTENTS|XFS_AT_GENCOUNT)
+
+/*
+ * Modes.
+ */
+#define VSUID S_ISUID /* set user id on execution */
+#define VSGID S_ISGID /* set group id on execution */
+#define VSVTX S_ISVTX /* save swapped text even after use */
+#define VREAD S_IRUSR /* read, write, execute permissions */
+#define VWRITE S_IWUSR
+#define VEXEC S_IXUSR
+
+#define MODEMASK S_IALLUGO /* 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_revalidate_core(struct vnode *, vattr_t *);
+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(XFS_VNODE_TRACE)
+#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
+#define VN_HOLD(vp) ((void)vn_hold(vp))
+#define VN_RELE(vp) (iput(LINVFS_GET_IP(vp)))
+#endif
+
+/*
+ * Vname handling macros.
+ */
+#define VNAME(dentry) ((char *) (dentry)->d_name.name)
+#define VNAMELEN(dentry) ((dentry)->d_name.len)
+#define VNAME_TO_VNODE(dentry) (LINVFS_GET_VP((dentry)->d_inode))
+
+/*
+ * Vnode spinlock manipulation.
+ */
+#define VN_LOCK(vp) mutex_spinlock(&(vp)->v_lock)
+#define VN_UNLOCK(vp, s) mutex_spinunlock(&(vp)->v_lock, s)
+#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);
+}
+
+/*
+ * Update modify/access/change times on the vnode
+ */
+#define VN_MTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_mtime = *(tvp))
+#define VN_ATIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_atime = *(tvp))
+#define VN_CTIMESET(vp, tvp) (LINVFS_GET_IP(vp)->i_ctime = *(tvp))
+
+/*
+ * Dealing with bad inodes
+ */
+static inline void vn_mark_bad(struct vnode *vp)
+{
+ make_bad_inode(LINVFS_GET_IP(vp));
+}
+
+static inline int VN_BAD(struct vnode *vp)
+{
+ return is_bad_inode(LINVFS_GET_IP(vp));
+}
+
+/*
+ * Some useful predicates.
+ */
+#define VN_MAPPED(vp) mapping_mapped(LINVFS_GET_IP(vp)->i_mapping)
+#define VN_CACHED(vp) (LINVFS_GET_IP(vp)->i_mapping->nrpages)
+#define VN_DIRTY(vp) mapping_tagged(LINVFS_GET_IP(vp)->i_mapping, \
+ PAGECACHE_TAG_DIRTY)
+#define VMODIFY(vp) VN_FLAGSET(vp, VMODIFIED)
+#define VUNMODIFY(vp) VN_FLAGCLR(vp, VMODIFIED)
+
+/*
+ * Flags to VOP_SETATTR/VOP_GETATTR.
+ */
+#define ATTR_UTIME 0x01 /* non-default utime(2) request */
+#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 */
+
+/*
+ * 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 */
+
+/*
+ * Tracking vnode activity.
+ */
+#if defined(XFS_VNODE_TRACE)
+
+#define VNODE_TRACE_SIZE 16 /* number of trace 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
+#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
+
+#endif /* __XFS_VNODE_H__ */
OpenPOWER on IntegriCloud