a5b65058d5
that use it. Specifically, vop_stdlock uses the lock pointed to by vp->v_vnlock. By default, getnewvnode sets up vp->v_vnlock to reference vp->v_lock. Filesystems that wish to use the default do not need to allocate a lock at the front of their node structure (as some still did) or do a lockinit. They can simply start using vn_lock/VOP_UNLOCK. Filesystems that wish to manage their own locks, but still use the vop_stdlock functions (such as nullfs) can simply replace vp->v_vnlock with a pointer to the lock that they wish to have used for the vnode. Such filesystems are responsible for setting the vp->v_vnlock back to the default in their vop_reclaim routine (e.g., vp->v_vnlock = &vp->v_lock). In theory, this set of changes cleans up the existing filesystem lock interface and should have no function change to the existing locking scheme. Sponsored by: DARPA & NAI Labs.
102 lines
3.6 KiB
C
102 lines
3.6 KiB
C
/* $NetBSD: ntfs_inode.h,v 1.8 1999/10/31 19:45:26 jdolecek Exp $ */
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/*-
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* Copyright (c) 1998, 1999 Semen Ustimenko
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/* These flags are kept in i_flag. */
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#define IN_ACCESS 0x0001 /* Access time update request. */
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#define IN_CHANGE 0x0002 /* Inode change time update request. */
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#define IN_UPDATE 0x0004 /* Modification time update request. */
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#define IN_MODIFIED 0x0008 /* Inode has been modified. */
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#define IN_RENAME 0x0010 /* Inode is being renamed. */
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#define IN_SHLOCK 0x0020 /* File has shared lock. */
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#define IN_EXLOCK 0x0040 /* File has exclusive lock. */
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#define IN_LAZYMOD 0x0080 /* Modified, but don't write yet. */
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#define IN_HASHED 0x0800 /* Inode is on hash list */
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#define IN_LOADED 0x8000 /* ntvattrs loaded */
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#define IN_PRELOADED 0x4000 /* loaded from directory entry */
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struct ntnode {
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struct vnode *i_devvp; /* vnode of blk dev we live on */
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dev_t i_dev; /* Device associated with the inode. */
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LIST_ENTRY(ntnode) i_hash;
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struct ntnode *i_next;
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struct ntnode **i_prev;
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struct ntfsmount *i_mp;
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ino_t i_number;
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u_int32_t i_flag;
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/* locking */
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struct lock i_lock;
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struct mtx i_interlock;
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int i_usecount;
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LIST_HEAD(,fnode) i_fnlist;
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LIST_HEAD(,ntvattr) i_valist;
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long i_nlink; /* MFR */
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ino_t i_mainrec; /* MFR */
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u_int32_t i_frflag; /* MFR */
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};
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#define FN_PRELOADED 0x0001
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#define FN_VALID 0x0002
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#define FN_AATTRNAME 0x0004 /* space allocated for f_attrname */
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struct fnode {
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LIST_ENTRY(fnode) f_fnlist;
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struct vnode *f_vp; /* Associatied vnode */
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struct ntnode *f_ip; /* Associated ntnode */
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u_long f_flag;
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ntfs_times_t f_times; /* $NAME/dirinfo */
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ino_t f_pnumber; /* $NAME/dirinfo */
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u_int32_t f_fflag; /* $NAME/dirinfo */
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u_int64_t f_size; /* defattr/dirinfo: */
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u_int64_t f_allocated; /* defattr/dirinfo */
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u_int32_t f_attrtype;
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char *f_attrname;
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/* for ntreaddir */
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u_int32_t f_lastdattr;
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u_int32_t f_lastdblnum;
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u_int32_t f_lastdoff;
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u_int32_t f_lastdnum;
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caddr_t f_dirblbuf;
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u_int32_t f_dirblsz;
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};
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/* This overlays the fid structure (see <sys/mount.h>) */
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struct ntfid {
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u_int16_t ntfid_len; /* Length of structure. */
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u_int16_t ntfid_pad; /* Force 32-bit alignment. */
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ino_t ntfid_ino; /* File number (ino). */
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int32_t ntfid_gen; /* Generation number. */
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};
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