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80704a47af
vnode and following back the chain of n_parent pointers up to the root, without acquiring the locks of the n_parent vnodes analyzed during the computation. This is immediately wrong because if the vnode lock is not held there's no guarantee on the validity of the vnode pointer or the data. In order to fix, store the whole path in the smbnode structure so that smbfs_fullpath() can use this information. Discussed with: kib Reported and tested by: pho Sponsored by: iXsystems inc.
104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
/*-
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* Copyright (c) 2000-2001 Boris Popov
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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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#ifndef _FS_SMBFS_NODE_H_
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#define _FS_SMBFS_NODE_H_
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#define SMBFS_ROOT_INO 2 /* just like in UFS */
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/* Bits for smbnode.n_flag */
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#define NFLUSHINPROG 0x0001
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#define NFLUSHWANT 0x0002 /* they should gone ... */
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#define NMODIFIED 0x0004 /* bogus, until async IO implemented */
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/*efine NNEW 0x0008*//* smb/vnode has been allocated */
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#define NREFPARENT 0x0010 /* node holds parent from recycling */
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#define NFLUSHWIRE 0x1000 /* pending flush request */
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#define NOPEN 0x2000 /* file is open */
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#define NGONE 0x4000 /* file has been removed/renamed */
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struct smbfs_fctx;
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struct smbnode {
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int n_flag;
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struct vnode * n_parent;
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struct vnode * n_vnode;
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struct smbmount * n_mount;
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time_t n_attrage; /* attributes cache time */
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/* time_t n_ctime;*/
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struct timespec n_mtime; /* modify time */
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struct timespec n_atime; /* last access time */
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u_quad_t n_size;
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long n_ino;
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long n_parentino; /* parent inode number */
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int n_dosattr;
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u_int16_t n_fid; /* file handle */
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int n_rwstate; /* granted access mode */
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int n_rplen;
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char * n_rpath;
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u_char n_nmlen;
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u_char * n_name;
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struct smbfs_fctx * n_dirseq; /* ff context */
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long n_dirofs; /* last ff offset */
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LIST_ENTRY(smbnode) n_hash;
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};
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struct smbcmp {
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struct vnode * n_parent;
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int n_nmlen;
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const char * n_name;
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};
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#define VTOSMB(vp) ((struct smbnode *)(vp)->v_data)
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#define SMBTOV(np) ((struct vnode *)(np)->n_vnode)
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#define SMBFS_DNP_SEP(dnp) ((dnp->n_rplen > 1) ? '\\' : '\0')
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struct vop_getpages_args;
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struct vop_inactive_args;
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struct vop_putpages_args;
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struct vop_reclaim_args;
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struct ucred;
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struct uio;
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struct smbfattr;
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int smbfs_inactive(struct vop_inactive_args *);
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int smbfs_reclaim(struct vop_reclaim_args *);
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int smbfs_nget(struct mount *mp, struct vnode *dvp, const char *name, int nmlen,
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struct smbfattr *fap, struct vnode **vpp);
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u_int32_t smbfs_hash(const u_char *name, int nmlen);
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int smbfs_getpages(struct vop_getpages_args *);
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int smbfs_putpages(struct vop_putpages_args *);
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int smbfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred);
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int smbfs_writevnode(struct vnode *vp, struct uio *uiop, struct ucred *cred, int ioflag);
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void smbfs_attr_cacheenter(struct vnode *vp, struct smbfattr *fap);
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int smbfs_attr_cachelookup(struct vnode *vp ,struct vattr *va);
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#define smbfs_attr_cacheremove(vp) VTOSMB(vp)->n_attrage = 0
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#endif /* _FS_SMBFS_NODE_H_ */
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