2008 lines
46 KiB
C
2008 lines
46 KiB
C
/* $NetBSD: ntfs_subr.c,v 1.23 1999/10/31 19:45:26 jdolecek Exp $ */
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/*-
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* Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
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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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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/kernel.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/file.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#if defined(__NetBSD__)
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#include <miscfs/specfs/specdev.h>
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#endif
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/* #define NTFS_DEBUG 1 */
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#include <ntfs/ntfs.h>
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#include <ntfs/ntfsmount.h>
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#include <ntfs/ntfs_inode.h>
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#include <ntfs/ntfs_vfsops.h>
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#include <ntfs/ntfs_subr.h>
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#include <ntfs/ntfs_compr.h>
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#include <ntfs/ntfs_ihash.h>
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#if defined(__FreeBSD__)
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MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information");
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MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data");
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MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage");
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MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary");
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#endif
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static int ntfs_ntlookupattr __P((struct ntfsmount *, const char *, int, int *, char **));
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static int ntfs_findvattr __P((struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t));
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static int ntfs_uastricmp __P((const wchar *, size_t, const char *, size_t));
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static int ntfs_uastrcmp __P((const wchar *, size_t, const char *, size_t));
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/* table for mapping Unicode chars into uppercase; it's filled upon first
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* ntfs mount, freed upon last ntfs umount */
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static wchar *ntfs_toupper_tab;
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#define NTFS_U28(ch) ((((ch) & 0xFF) == 0) ? '_' : (ch) & 0xFF)
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#define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(unsigned char)(ch)])
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static struct lock ntfs_toupper_lock;
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static signed int ntfs_toupper_usecount;
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/* support macro for ntfs_ntvattrget() */
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#define NTFS_AALPCMP(aalp,type,name,namelen) ( \
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(aalp->al_type == type) && (aalp->al_namelen == namelen) && \
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!ntfs_uastrcmp(aalp->al_name,aalp->al_namelen,name,namelen) )
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/*
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*
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*/
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int
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ntfs_ntvattrrele(vap)
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struct ntvattr * vap;
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{
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dprintf(("ntfs_ntvattrrele: ino: %d, type: 0x%x\n",
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vap->va_ip->i_number, vap->va_type));
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ntfs_ntrele(vap->va_ip);
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return (0);
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}
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/*
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* find the attribute in the ntnode
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*/
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static int
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ntfs_findvattr(ntmp, ip, lvapp, vapp, type, name, namelen, vcn)
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struct ntfsmount *ntmp;
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struct ntnode *ip;
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struct ntvattr **lvapp, **vapp;
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u_int32_t type;
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const char *name;
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size_t namelen;
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cn_t vcn;
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{
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int error;
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struct ntvattr *vap;
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if((ip->i_flag & IN_LOADED) == 0) {
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dprintf(("ntfs_findvattr: node not loaded, ino: %d\n",
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ip->i_number));
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error = ntfs_loadntnode(ntmp,ip);
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if (error) {
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printf("ntfs_findvattr: FAILED TO LOAD INO: %d\n",
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ip->i_number);
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return (error);
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}
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}
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*lvapp = NULL;
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*vapp = NULL;
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for (vap = ip->i_valist.lh_first; vap; vap = vap->va_list.le_next) {
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ddprintf(("ntfs_findvattr: type: 0x%x, vcn: %d - %d\n", \
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vap->va_type, (u_int32_t) vap->va_vcnstart, \
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(u_int32_t) vap->va_vcnend));
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if ((vap->va_type == type) &&
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(vap->va_vcnstart <= vcn) && (vap->va_vcnend >= vcn) &&
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(vap->va_namelen == namelen) &&
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(strncmp(name, vap->va_name, namelen) == 0)) {
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*vapp = vap;
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ntfs_ntref(vap->va_ip);
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return (0);
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}
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if (vap->va_type == NTFS_A_ATTRLIST)
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*lvapp = vap;
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}
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return (-1);
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}
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/*
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* Search attribute specifed in ntnode (load ntnode if nessecary).
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* If not found but ATTR_A_ATTRLIST present, read it in and search throught.
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* VOP_VGET node needed, and lookup througth it's ntnode (load if nessesary).
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*
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* ntnode should be locked
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*/
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int
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ntfs_ntvattrget(
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struct ntfsmount * ntmp,
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struct ntnode * ip,
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u_int32_t type,
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const char *name,
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cn_t vcn,
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struct ntvattr ** vapp)
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{
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struct ntvattr *lvap = NULL;
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struct attr_attrlist *aalp;
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struct attr_attrlist *nextaalp;
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struct vnode *newvp;
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struct ntnode *newip;
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caddr_t alpool;
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size_t namelen, len;
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int error;
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*vapp = NULL;
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if (name) {
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dprintf(("ntfs_ntvattrget: " \
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"ino: %d, type: 0x%x, name: %s, vcn: %d\n", \
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ip->i_number, type, name, (u_int32_t) vcn));
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namelen = strlen(name);
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} else {
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dprintf(("ntfs_ntvattrget: " \
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"ino: %d, type: 0x%x, vcn: %d\n", \
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ip->i_number, type, (u_int32_t) vcn));
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name = "";
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namelen = 0;
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}
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error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn);
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if (error >= 0)
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return (error);
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if (!lvap) {
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dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \
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"ino: %d, type: 0x%x, name: %s, vcn: %d\n", \
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ip->i_number, type, name, (u_int32_t) vcn));
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return (ENOENT);
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}
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/* Scan $ATTRIBUTE_LIST for requested attribute */
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len = lvap->va_datalen;
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MALLOC(alpool, caddr_t, len, M_TEMP, M_WAITOK);
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error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len,
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NULL);
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if (error)
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goto out;
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aalp = (struct attr_attrlist *) alpool;
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nextaalp = NULL;
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for(; len > 0; aalp = nextaalp) {
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dprintf(("ntfs_ntvattrget: " \
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"attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \
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aalp->al_inumber, aalp->al_type, \
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(u_int32_t) aalp->al_vcnstart));
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if (len > aalp->reclen) {
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nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *);
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} else {
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nextaalp = NULL;
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}
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len -= aalp->reclen;
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if (!NTFS_AALPCMP(aalp, type, name, namelen) ||
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(nextaalp && (nextaalp->al_vcnstart <= vcn) &&
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NTFS_AALPCMP(nextaalp, type, name, namelen)))
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continue;
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dprintf(("ntfs_ntvattrget: attribute in ino: %d\n",
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aalp->al_inumber));
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/* this is not a main record, so we can't use just plain
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vget() */
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error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber,
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NTFS_A_DATA, NULL, LK_EXCLUSIVE,
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VG_EXT, curproc, &newvp);
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if (error) {
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printf("ntfs_ntvattrget: CAN'T VGET INO: %d\n",
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aalp->al_inumber);
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goto out;
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}
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newip = VTONT(newvp);
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/* XXX have to lock ntnode */
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error = ntfs_findvattr(ntmp, newip, &lvap, vapp,
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type, name, namelen, vcn);
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vput(newvp);
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if (error == 0)
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goto out;
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printf("ntfs_ntvattrget: ATTRLIST ERROR.\n");
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break;
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}
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error = ENOENT;
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dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \
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"ino: %d, type: 0x%x, name: %.*s, vcn: %d\n", \
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ip->i_number, type, (int) namelen, name, (u_int32_t) vcn));
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out:
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FREE(alpool, M_TEMP);
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return (error);
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}
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/*
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* Read ntnode from disk, make ntvattr list.
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*
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* ntnode should be locked
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*/
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int
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ntfs_loadntnode(
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struct ntfsmount * ntmp,
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struct ntnode * ip)
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{
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struct filerec *mfrp;
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daddr_t bn;
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int error,off;
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struct attr *ap;
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struct ntvattr *nvap;
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dprintf(("ntfs_loadntnode: loading ino: %d\n",ip->i_number));
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MALLOC(mfrp, struct filerec *, ntfs_bntob(ntmp->ntm_bpmftrec),
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M_TEMP, M_WAITOK);
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if (ip->i_number < NTFS_SYSNODESNUM) {
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struct buf *bp;
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dprintf(("ntfs_loadntnode: read system node\n"));
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bn = ntfs_cntobn(ntmp->ntm_mftcn) +
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ntmp->ntm_bpmftrec * ip->i_number;
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error = bread(ntmp->ntm_devvp,
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bn, ntfs_bntob(ntmp->ntm_bpmftrec),
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NOCRED, &bp);
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if (error) {
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printf("ntfs_loadntnode: BREAD FAILED\n");
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brelse(bp);
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goto out;
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}
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memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec));
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bqrelse(bp);
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} else {
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struct vnode *vp;
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vp = ntmp->ntm_sysvn[NTFS_MFTINO];
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error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
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ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec),
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ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL);
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if (error) {
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printf("ntfs_loadntnode: ntfs_readattr failed\n");
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goto out;
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}
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}
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/* Check if magic and fixups are correct */
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error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp,
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ntfs_bntob(ntmp->ntm_bpmftrec));
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if (error) {
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printf("ntfs_loadntnode: BAD MFT RECORD %d\n",
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(u_int32_t) ip->i_number);
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goto out;
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}
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dprintf(("ntfs_loadntnode: load attrs for ino: %d\n",ip->i_number));
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off = mfrp->fr_attroff;
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ap = (struct attr *) ((caddr_t)mfrp + off);
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LIST_INIT(&ip->i_valist);
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while (ap->a_hdr.a_type != -1) {
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error = ntfs_attrtontvattr(ntmp, &nvap, ap);
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if (error)
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break;
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nvap->va_ip = ip;
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LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list);
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off += ap->a_hdr.reclen;
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ap = (struct attr *) ((caddr_t)mfrp + off);
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}
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if (error) {
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printf("ntfs_loadntnode: failed to load attr ino: %d\n",
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ip->i_number);
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goto out;
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}
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ip->i_mainrec = mfrp->fr_mainrec;
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ip->i_nlink = mfrp->fr_nlink;
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ip->i_frflag = mfrp->fr_flags;
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ip->i_flag |= IN_LOADED;
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out:
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FREE(mfrp, M_TEMP);
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return (error);
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}
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/*
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* Routine locks ntnode and increase usecount, just opposite of
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* ntfs_ntput().
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*/
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int
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ntfs_ntget(ip)
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struct ntnode *ip;
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{
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dprintf(("ntfs_ntget: get ntnode %d: %p, usecount: %d\n",
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ip->i_number, ip, ip->i_usecount));
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mtx_enter(&ip->i_interlock, MTX_DEF);
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ip->i_usecount++;
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LOCKMGR(&ip->i_lock, LK_EXCLUSIVE | LK_INTERLOCK, &ip->i_interlock);
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return 0;
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}
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/*
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* Routine search ntnode in hash, if found: lock, inc usecount and return.
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* If not in hash allocate structure for ntnode, prefill it, lock,
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* inc count and return.
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*
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* ntnode returned locked
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*/
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int
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ntfs_ntlookup(
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struct ntfsmount * ntmp,
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ino_t ino,
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struct ntnode ** ipp)
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{
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struct ntnode *ip;
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dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino));
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do {
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if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) {
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ntfs_ntget(ip);
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dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n",
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ino, ip, ip->i_usecount));
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*ipp = ip;
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return (0);
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}
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} while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL, NULL));
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MALLOC(ip, struct ntnode *, sizeof(struct ntnode), M_NTFSNTNODE,
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M_WAITOK | M_ZERO);
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ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip));
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/* Generic initialization */
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ip->i_devvp = ntmp->ntm_devvp;
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ip->i_dev = ntmp->ntm_dev;
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ip->i_number = ino;
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ip->i_mp = ntmp;
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LIST_INIT(&ip->i_fnlist);
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/* init lock and lock the newborn ntnode */
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lockinit(&ip->i_lock, PINOD, "ntnode", 0, LK_EXCLUSIVE);
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mtx_init(&ip->i_interlock, "ntnode interlock", MTX_DEF);
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ntfs_ntget(ip);
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ntfs_nthashins(ip);
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LOCKMGR(&ntfs_hashlock, LK_RELEASE, NULL);
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*ipp = ip;
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dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n",
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ino, ip, ip->i_usecount));
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return (0);
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}
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/*
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* Decrement usecount of ntnode and unlock it, if usecount reach zero,
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* deallocate ntnode.
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*
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* ntnode should be locked on entry, and unlocked on return.
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*/
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void
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ntfs_ntput(ip)
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struct ntnode *ip;
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{
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struct ntvattr *vap;
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dprintf(("ntfs_ntput: rele ntnode %d: %p, usecount: %d\n",
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ip->i_number, ip, ip->i_usecount));
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mtx_enter(&ip->i_interlock, MTX_DEF);
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ip->i_usecount--;
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#ifdef DIAGNOSTIC
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if (ip->i_usecount < 0) {
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panic("ntfs_ntput: ino: %d usecount: %d \n",
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ip->i_number,ip->i_usecount);
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}
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#endif
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if (ip->i_usecount == 0) {
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dprintf(("ntfs_ntput: deallocating ntnode: %d\n",
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ip->i_number));
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if (ip->i_fnlist.lh_first)
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panic("ntfs_ntput: ntnode has fnodes\n");
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ntfs_nthashrem(ip);
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while (ip->i_valist.lh_first != NULL) {
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vap = ip->i_valist.lh_first;
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LIST_REMOVE(vap,va_list);
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ntfs_freentvattr(vap);
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}
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mtx_exit(&ip->i_interlock, MTX_DEF);
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mtx_destroy(&ip->i_interlock);
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lockdestroy(&ip->i_lock);
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FREE(ip, M_NTFSNTNODE);
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} else {
|
|
LOCKMGR(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* increment usecount of ntnode
|
|
*/
|
|
void
|
|
ntfs_ntref(ip)
|
|
struct ntnode *ip;
|
|
{
|
|
mtx_enter(&ip->i_interlock, MTX_DEF);
|
|
ip->i_usecount++;
|
|
mtx_exit(&ip->i_interlock, MTX_DEF);
|
|
|
|
dprintf(("ntfs_ntref: ino %d, usecount: %d\n",
|
|
ip->i_number, ip->i_usecount));
|
|
|
|
}
|
|
|
|
/*
|
|
* Decrement usecount of ntnode.
|
|
*/
|
|
void
|
|
ntfs_ntrele(ip)
|
|
struct ntnode *ip;
|
|
{
|
|
dprintf(("ntfs_ntrele: rele ntnode %d: %p, usecount: %d\n",
|
|
ip->i_number, ip, ip->i_usecount));
|
|
|
|
mtx_enter(&ip->i_interlock, MTX_DEF);
|
|
ip->i_usecount--;
|
|
|
|
if (ip->i_usecount < 0)
|
|
panic("ntfs_ntrele: ino: %d usecount: %d \n",
|
|
ip->i_number,ip->i_usecount);
|
|
mtx_exit(&ip->i_interlock, MTX_DEF);
|
|
}
|
|
|
|
/*
|
|
* Deallocate all memory allocated for ntvattr
|
|
*/
|
|
void
|
|
ntfs_freentvattr(vap)
|
|
struct ntvattr * vap;
|
|
{
|
|
if (vap->va_flag & NTFS_AF_INRUN) {
|
|
if (vap->va_vruncn)
|
|
FREE(vap->va_vruncn, M_NTFSRUN);
|
|
if (vap->va_vruncl)
|
|
FREE(vap->va_vruncl, M_NTFSRUN);
|
|
} else {
|
|
if (vap->va_datap)
|
|
FREE(vap->va_datap, M_NTFSRDATA);
|
|
}
|
|
FREE(vap, M_NTFSNTVATTR);
|
|
}
|
|
|
|
/*
|
|
* Convert disk image of attribute into ntvattr structure,
|
|
* runs are expanded also.
|
|
*/
|
|
int
|
|
ntfs_attrtontvattr(
|
|
struct ntfsmount * ntmp,
|
|
struct ntvattr ** rvapp,
|
|
struct attr * rap)
|
|
{
|
|
int error, i;
|
|
struct ntvattr *vap;
|
|
|
|
error = 0;
|
|
*rvapp = NULL;
|
|
|
|
MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr),
|
|
M_NTFSNTVATTR, M_WAITOK | M_ZERO);
|
|
vap->va_ip = NULL;
|
|
vap->va_flag = rap->a_hdr.a_flag;
|
|
vap->va_type = rap->a_hdr.a_type;
|
|
vap->va_compression = rap->a_hdr.a_compression;
|
|
vap->va_index = rap->a_hdr.a_index;
|
|
|
|
ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index));
|
|
|
|
vap->va_namelen = rap->a_hdr.a_namelen;
|
|
if (rap->a_hdr.a_namelen) {
|
|
wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff);
|
|
ddprintf((", name:["));
|
|
for (i = 0; i < vap->va_namelen; i++) {
|
|
vap->va_name[i] = unp[i];
|
|
ddprintf(("%c", vap->va_name[i]));
|
|
}
|
|
ddprintf(("]"));
|
|
}
|
|
if (vap->va_flag & NTFS_AF_INRUN) {
|
|
ddprintf((", nonres."));
|
|
vap->va_datalen = rap->a_nr.a_datalen;
|
|
vap->va_allocated = rap->a_nr.a_allocated;
|
|
vap->va_vcnstart = rap->a_nr.a_vcnstart;
|
|
vap->va_vcnend = rap->a_nr.a_vcnend;
|
|
vap->va_compressalg = rap->a_nr.a_compressalg;
|
|
error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl),
|
|
&(vap->va_vruncnt),
|
|
(caddr_t) rap + rap->a_nr.a_dataoff);
|
|
} else {
|
|
vap->va_compressalg = 0;
|
|
ddprintf((", res."));
|
|
vap->va_datalen = rap->a_r.a_datalen;
|
|
vap->va_allocated = rap->a_r.a_datalen;
|
|
vap->va_vcnstart = 0;
|
|
vap->va_vcnend = ntfs_btocn(vap->va_allocated);
|
|
MALLOC(vap->va_datap, caddr_t, vap->va_datalen,
|
|
M_NTFSRDATA, M_WAITOK);
|
|
memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff,
|
|
rap->a_r.a_datalen);
|
|
}
|
|
ddprintf((", len: %d", vap->va_datalen));
|
|
|
|
if (error)
|
|
FREE(vap, M_NTFSNTVATTR);
|
|
else
|
|
*rvapp = vap;
|
|
|
|
ddprintf(("\n"));
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Expand run into more utilizable and more memory eating format.
|
|
*/
|
|
int
|
|
ntfs_runtovrun(
|
|
cn_t ** rcnp,
|
|
cn_t ** rclp,
|
|
u_long * rcntp,
|
|
u_int8_t * run)
|
|
{
|
|
u_int32_t off;
|
|
u_int32_t sz, i;
|
|
cn_t *cn;
|
|
cn_t *cl;
|
|
u_long cnt;
|
|
cn_t prev;
|
|
cn_t tmp;
|
|
|
|
off = 0;
|
|
cnt = 0;
|
|
i = 0;
|
|
while (run[off]) {
|
|
off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1;
|
|
cnt++;
|
|
}
|
|
MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
|
|
MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
|
|
|
|
off = 0;
|
|
cnt = 0;
|
|
prev = 0;
|
|
while (run[off]) {
|
|
|
|
sz = run[off++];
|
|
cl[cnt] = 0;
|
|
|
|
for (i = 0; i < (sz & 0xF); i++)
|
|
cl[cnt] += (u_int32_t) run[off++] << (i << 3);
|
|
|
|
sz >>= 4;
|
|
if (run[off + sz - 1] & 0x80) {
|
|
tmp = ((u_int64_t) - 1) << (sz << 3);
|
|
for (i = 0; i < sz; i++)
|
|
tmp |= (u_int64_t) run[off++] << (i << 3);
|
|
} else {
|
|
tmp = 0;
|
|
for (i = 0; i < sz; i++)
|
|
tmp |= (u_int64_t) run[off++] << (i << 3);
|
|
}
|
|
if (tmp)
|
|
prev = cn[cnt] = prev + tmp;
|
|
else
|
|
cn[cnt] = tmp;
|
|
|
|
cnt++;
|
|
}
|
|
*rcnp = cn;
|
|
*rclp = cl;
|
|
*rcntp = cnt;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Compare unicode and ascii string case insens.
|
|
*/
|
|
static int
|
|
ntfs_uastricmp(ustr, ustrlen, astr, astrlen)
|
|
const wchar *ustr;
|
|
size_t ustrlen;
|
|
const char *astr;
|
|
size_t astrlen;
|
|
{
|
|
size_t i;
|
|
int res;
|
|
|
|
for (i = 0; i < ustrlen && i < astrlen; i++) {
|
|
res = ((int) NTFS_TOUPPER(NTFS_U28(ustr[i]))) -
|
|
((int)NTFS_TOUPPER(astr[i]));
|
|
if (res)
|
|
return res;
|
|
}
|
|
return (ustrlen - astrlen);
|
|
}
|
|
|
|
/*
|
|
* Compare unicode and ascii string case sens.
|
|
*/
|
|
static int
|
|
ntfs_uastrcmp(ustr, ustrlen, astr, astrlen)
|
|
const wchar *ustr;
|
|
size_t ustrlen;
|
|
const char *astr;
|
|
size_t astrlen;
|
|
{
|
|
size_t i;
|
|
int res;
|
|
|
|
for (i = 0; (i < ustrlen) && (i < astrlen); i++) {
|
|
res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]);
|
|
if (res)
|
|
return res;
|
|
}
|
|
return (ustrlen - astrlen);
|
|
}
|
|
|
|
/*
|
|
* Search fnode in ntnode, if not found allocate and preinitialize.
|
|
*
|
|
* ntnode should be locked on entry.
|
|
*/
|
|
int
|
|
ntfs_fget(
|
|
struct ntfsmount *ntmp,
|
|
struct ntnode *ip,
|
|
int attrtype,
|
|
char *attrname,
|
|
struct fnode **fpp)
|
|
{
|
|
struct fnode *fp;
|
|
|
|
dprintf(("ntfs_fget: ino: %d, attrtype: 0x%x, attrname: %s\n",
|
|
ip->i_number,attrtype, attrname?attrname:""));
|
|
*fpp = NULL;
|
|
for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){
|
|
dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n",
|
|
fp->f_attrtype, fp->f_attrname?fp->f_attrname:""));
|
|
|
|
if ((attrtype == fp->f_attrtype) &&
|
|
((!attrname && !fp->f_attrname) ||
|
|
(attrname && fp->f_attrname &&
|
|
!strcmp(attrname,fp->f_attrname)))){
|
|
dprintf(("ntfs_fget: found existed: %p\n",fp));
|
|
*fpp = fp;
|
|
}
|
|
}
|
|
|
|
if (*fpp)
|
|
return (0);
|
|
|
|
MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE,
|
|
M_WAITOK | M_ZERO);
|
|
dprintf(("ntfs_fget: allocating fnode: %p\n",fp));
|
|
|
|
fp->f_ip = ip;
|
|
fp->f_attrname = attrname;
|
|
if (fp->f_attrname) fp->f_flag |= FN_AATTRNAME;
|
|
fp->f_attrtype = attrtype;
|
|
|
|
ntfs_ntref(ip);
|
|
|
|
LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist);
|
|
|
|
*fpp = fp;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Deallocate fnode, remove it from ntnode's fnode list.
|
|
*
|
|
* ntnode should be locked.
|
|
*/
|
|
void
|
|
ntfs_frele(
|
|
struct fnode *fp)
|
|
{
|
|
struct ntnode *ip = FTONT(fp);
|
|
|
|
dprintf(("ntfs_frele: fnode: %p for %d: %p\n", fp, ip->i_number, ip));
|
|
|
|
dprintf(("ntfs_frele: deallocating fnode\n"));
|
|
LIST_REMOVE(fp,f_fnlist);
|
|
if (fp->f_flag & FN_AATTRNAME)
|
|
FREE(fp->f_attrname, M_TEMP);
|
|
if (fp->f_dirblbuf)
|
|
FREE(fp->f_dirblbuf, M_NTFSDIR);
|
|
#ifdef __FreeBSD__
|
|
lockdestroy(&fp->f_lock);
|
|
#endif
|
|
FREE(fp, M_NTFSFNODE);
|
|
ntfs_ntrele(ip);
|
|
}
|
|
|
|
/*
|
|
* Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME],
|
|
* $ATTR_TYPE is searched in attrdefs read from $AttrDefs.
|
|
* If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed.
|
|
*/
|
|
static int
|
|
ntfs_ntlookupattr(
|
|
struct ntfsmount * ntmp,
|
|
const char * name,
|
|
int namelen,
|
|
int *attrtype,
|
|
char **attrname)
|
|
{
|
|
const char *sys;
|
|
size_t syslen, i;
|
|
struct ntvattrdef *adp;
|
|
|
|
if (namelen == 0)
|
|
return (0);
|
|
|
|
if (name[0] == '$') {
|
|
sys = name;
|
|
for (syslen = 0; syslen < namelen; syslen++) {
|
|
if(sys[syslen] == ':') {
|
|
name++;
|
|
namelen--;
|
|
break;
|
|
}
|
|
}
|
|
name += syslen;
|
|
namelen -= syslen;
|
|
|
|
adp = ntmp->ntm_ad;
|
|
for (i = 0; i < ntmp->ntm_adnum; i++, adp++){
|
|
if (syslen != adp->ad_namelen ||
|
|
strncmp(sys, adp->ad_name, syslen) != 0)
|
|
continue;
|
|
|
|
*attrtype = adp->ad_type;
|
|
goto out;
|
|
}
|
|
return (ENOENT);
|
|
}
|
|
|
|
out:
|
|
if (namelen) {
|
|
MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK);
|
|
memcpy((*attrname), name, namelen);
|
|
(*attrname)[namelen] = '\0';
|
|
*attrtype = NTFS_A_DATA;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Lookup specifed node for filename, matching cnp,
|
|
* return fnode filled.
|
|
*/
|
|
int
|
|
ntfs_ntlookupfile(
|
|
struct ntfsmount * ntmp,
|
|
struct vnode * vp,
|
|
struct componentname * cnp,
|
|
struct vnode ** vpp)
|
|
{
|
|
struct fnode *fp = VTOF(vp);
|
|
struct ntnode *ip = FTONT(fp);
|
|
struct ntvattr *vap; /* Root attribute */
|
|
cn_t cn; /* VCN in current attribute */
|
|
caddr_t rdbuf; /* Buffer to read directory's blocks */
|
|
u_int32_t blsize;
|
|
u_int32_t rdsize; /* Length of data to read from current block */
|
|
struct attr_indexentry *iep;
|
|
int error, res, anamelen, fnamelen;
|
|
const char *fname,*aname;
|
|
u_int32_t aoff;
|
|
int attrtype = NTFS_A_DATA;
|
|
char *attrname = NULL;
|
|
struct fnode *nfp;
|
|
struct vnode *nvp;
|
|
enum vtype f_type;
|
|
|
|
error = ntfs_ntget(ip);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
|
|
if (error || (vap->va_flag & NTFS_AF_INRUN))
|
|
return (ENOTDIR);
|
|
|
|
blsize = vap->va_a_iroot->ir_size;
|
|
rdsize = vap->va_datalen;
|
|
|
|
/*
|
|
* Divide file name into: foofilefoofilefoofile[:attrspec]
|
|
* Store like this: fname:fnamelen [aname:anamelen]
|
|
*/
|
|
fname = cnp->cn_nameptr;
|
|
aname = NULL;
|
|
anamelen = 0;
|
|
for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++)
|
|
if(fname[fnamelen] == ':') {
|
|
aname = fname + fnamelen + 1;
|
|
anamelen = cnp->cn_namelen - fnamelen - 1;
|
|
dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n",
|
|
fname, fnamelen, aname, anamelen));
|
|
break;
|
|
}
|
|
|
|
dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize));
|
|
|
|
MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK);
|
|
|
|
error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30",
|
|
0, rdsize, rdbuf, NULL);
|
|
if (error)
|
|
goto fail;
|
|
|
|
aoff = sizeof(struct attr_indexroot);
|
|
|
|
do {
|
|
iep = (struct attr_indexentry *) (rdbuf + aoff);
|
|
|
|
for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
|
|
aoff += iep->reclen,
|
|
iep = (struct attr_indexentry *) (rdbuf + aoff))
|
|
{
|
|
ddprintf(("scan: %d, %d\n",
|
|
(u_int32_t) iep->ie_number,
|
|
(u_int32_t) iep->ie_fnametype));
|
|
|
|
/* check the name - the case-insensitible check
|
|
* has to come first, to break from this for loop
|
|
* if needed, so we can dive correctly */
|
|
res = ntfs_uastricmp(iep->ie_fname, iep->ie_fnamelen,
|
|
fname, fnamelen);
|
|
if (res > 0) break;
|
|
if (res < 0) continue;
|
|
|
|
if (iep->ie_fnametype == 0 ||
|
|
!(ntmp->ntm_flag & NTFS_MFLAG_CASEINS))
|
|
{
|
|
res = ntfs_uastrcmp(iep->ie_fname,
|
|
iep->ie_fnamelen, fname, fnamelen);
|
|
if (res != 0) continue;
|
|
}
|
|
|
|
if (aname) {
|
|
error = ntfs_ntlookupattr(ntmp,
|
|
aname, anamelen,
|
|
&attrtype, &attrname);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
|
|
/* Check if we've found ourself */
|
|
if ((iep->ie_number == ip->i_number) &&
|
|
(attrtype == fp->f_attrtype) &&
|
|
((!attrname && !fp->f_attrname) ||
|
|
(attrname && fp->f_attrname &&
|
|
!strcmp(attrname, fp->f_attrname))))
|
|
{
|
|
VREF(vp);
|
|
*vpp = vp;
|
|
error = 0;
|
|
goto fail;
|
|
}
|
|
|
|
/* free the buffer returned by ntfs_ntlookupattr() */
|
|
if (attrname) {
|
|
FREE(attrname, M_TEMP);
|
|
attrname = NULL;
|
|
}
|
|
|
|
/* vget node, but don't load it */
|
|
error = ntfs_vgetex(ntmp->ntm_mountp,
|
|
iep->ie_number, attrtype, attrname,
|
|
LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN,
|
|
curproc, &nvp);
|
|
if (error)
|
|
goto fail;
|
|
|
|
nfp = VTOF(nvp);
|
|
|
|
if (nfp->f_flag & FN_VALID) {
|
|
*vpp = nvp;
|
|
goto fail;
|
|
}
|
|
|
|
nfp->f_fflag = iep->ie_fflag;
|
|
nfp->f_pnumber = iep->ie_fpnumber;
|
|
nfp->f_times = iep->ie_ftimes;
|
|
|
|
if((nfp->f_fflag & NTFS_FFLAG_DIR) &&
|
|
(nfp->f_attrtype == NTFS_A_DATA) &&
|
|
(nfp->f_attrname == NULL))
|
|
f_type = VDIR;
|
|
else
|
|
f_type = VREG;
|
|
|
|
nvp->v_type = f_type;
|
|
|
|
if ((nfp->f_attrtype == NTFS_A_DATA) &&
|
|
(nfp->f_attrname == NULL))
|
|
{
|
|
/* Opening default attribute */
|
|
nfp->f_size = iep->ie_fsize;
|
|
nfp->f_allocated = iep->ie_fallocated;
|
|
nfp->f_flag |= FN_PRELOADED;
|
|
} else {
|
|
error = ntfs_filesize(ntmp, nfp,
|
|
&nfp->f_size, &nfp->f_allocated);
|
|
if (error) {
|
|
vput(nvp);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
nfp->f_flag &= ~FN_VALID;
|
|
*vpp = nvp;
|
|
goto fail;
|
|
}
|
|
|
|
/* Dive if possible */
|
|
if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) {
|
|
dprintf(("ntfs_ntlookupfile: diving\n"));
|
|
|
|
cn = *(cn_t *) (rdbuf + aoff +
|
|
iep->reclen - sizeof(cn_t));
|
|
rdsize = blsize;
|
|
|
|
error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30",
|
|
ntfs_cntob(cn), rdsize, rdbuf, NULL);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
|
|
rdbuf, rdsize);
|
|
if (error)
|
|
goto fail;
|
|
|
|
aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize +
|
|
0x18);
|
|
} else {
|
|
dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n"));
|
|
error = ENOENT;
|
|
break;
|
|
}
|
|
} while (1);
|
|
|
|
dprintf(("finish\n"));
|
|
|
|
fail:
|
|
if (attrname) FREE(attrname, M_TEMP);
|
|
ntfs_ntvattrrele(vap);
|
|
ntfs_ntput(ip);
|
|
FREE(rdbuf, M_TEMP);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Check if name type is permitted to show.
|
|
*/
|
|
int
|
|
ntfs_isnamepermitted(
|
|
struct ntfsmount * ntmp,
|
|
struct attr_indexentry * iep)
|
|
{
|
|
if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)
|
|
return 1;
|
|
|
|
switch (iep->ie_fnametype) {
|
|
case 2:
|
|
ddprintf(("ntfs_isnamepermitted: skiped DOS name\n"));
|
|
return 0;
|
|
case 0: case 1: case 3:
|
|
return 1;
|
|
default:
|
|
printf("ntfs_isnamepermitted: " \
|
|
"WARNING! Unknown file name type: %d\n",
|
|
iep->ie_fnametype);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Read ntfs dir like stream of attr_indexentry, not like btree of them.
|
|
* This is done by scaning $BITMAP:$I30 for busy clusters and reading them.
|
|
* Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in
|
|
* fnode, so we can skip toward record number num almost immediatly.
|
|
* Anyway this is rather slow routine. The problem is that we don't know
|
|
* how many records are there in $INDEX_ALLOCATION:$I30 block.
|
|
*/
|
|
int
|
|
ntfs_ntreaddir(
|
|
struct ntfsmount * ntmp,
|
|
struct fnode * fp,
|
|
u_int32_t num,
|
|
struct attr_indexentry ** riepp)
|
|
{
|
|
struct ntnode *ip = FTONT(fp);
|
|
struct ntvattr *vap = NULL; /* IndexRoot attribute */
|
|
struct ntvattr *bmvap = NULL; /* BitMap attribute */
|
|
struct ntvattr *iavap = NULL; /* IndexAllocation attribute */
|
|
caddr_t rdbuf; /* Buffer to read directory's blocks */
|
|
u_char *bmp = NULL; /* Bitmap */
|
|
u_int32_t blsize; /* Index allocation size (2048) */
|
|
u_int32_t rdsize; /* Length of data to read */
|
|
u_int32_t attrnum; /* Current attribute type */
|
|
u_int32_t cpbl = 1; /* Clusters per directory block */
|
|
u_int32_t blnum;
|
|
struct attr_indexentry *iep;
|
|
int error = ENOENT;
|
|
u_int32_t aoff, cnum;
|
|
|
|
dprintf(("ntfs_ntreaddir: read ino: %d, num: %d\n", ip->i_number, num));
|
|
error = ntfs_ntget(ip);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
|
|
if (error)
|
|
return (ENOTDIR);
|
|
|
|
if (fp->f_dirblbuf == NULL) {
|
|
fp->f_dirblsz = vap->va_a_iroot->ir_size;
|
|
MALLOC(fp->f_dirblbuf, caddr_t,
|
|
max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK);
|
|
}
|
|
|
|
blsize = fp->f_dirblsz;
|
|
rdbuf = fp->f_dirblbuf;
|
|
|
|
dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize));
|
|
|
|
if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) {
|
|
error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30",
|
|
0, &bmvap);
|
|
if (error) {
|
|
error = ENOTDIR;
|
|
goto fail;
|
|
}
|
|
MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK);
|
|
error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0,
|
|
bmvap->va_datalen, bmp, NULL);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30",
|
|
0, &iavap);
|
|
if (error) {
|
|
error = ENOTDIR;
|
|
goto fail;
|
|
}
|
|
cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1);
|
|
dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n",
|
|
iavap->va_datalen, cpbl));
|
|
} else {
|
|
dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n"));
|
|
iavap = bmvap = NULL;
|
|
bmp = NULL;
|
|
}
|
|
|
|
/* Try use previous values */
|
|
if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) {
|
|
attrnum = fp->f_lastdattr;
|
|
aoff = fp->f_lastdoff;
|
|
blnum = fp->f_lastdblnum;
|
|
cnum = fp->f_lastdnum;
|
|
} else {
|
|
attrnum = NTFS_A_INDXROOT;
|
|
aoff = sizeof(struct attr_indexroot);
|
|
blnum = 0;
|
|
cnum = 0;
|
|
}
|
|
|
|
do {
|
|
dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n",
|
|
attrnum, (u_int32_t) blnum, cnum, num, aoff));
|
|
rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize;
|
|
error = ntfs_readattr(ntmp, ip, attrnum, "$I30",
|
|
ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL);
|
|
if (error)
|
|
goto fail;
|
|
|
|
if (attrnum == NTFS_A_INDX) {
|
|
error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
|
|
rdbuf, rdsize);
|
|
if (error)
|
|
goto fail;
|
|
}
|
|
if (aoff == 0)
|
|
aoff = (attrnum == NTFS_A_INDX) ?
|
|
(0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) :
|
|
sizeof(struct attr_indexroot);
|
|
|
|
iep = (struct attr_indexentry *) (rdbuf + aoff);
|
|
for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
|
|
aoff += iep->reclen,
|
|
iep = (struct attr_indexentry *) (rdbuf + aoff))
|
|
{
|
|
if (!ntfs_isnamepermitted(ntmp, iep)) continue;
|
|
|
|
if (cnum >= num) {
|
|
fp->f_lastdnum = cnum;
|
|
fp->f_lastdoff = aoff;
|
|
fp->f_lastdblnum = blnum;
|
|
fp->f_lastdattr = attrnum;
|
|
|
|
*riepp = iep;
|
|
|
|
error = 0;
|
|
goto fail;
|
|
}
|
|
cnum++;
|
|
}
|
|
|
|
if (iavap) {
|
|
if (attrnum == NTFS_A_INDXROOT)
|
|
blnum = 0;
|
|
else
|
|
blnum++;
|
|
|
|
while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) {
|
|
if (bmp[blnum >> 3] & (1 << (blnum & 3)))
|
|
break;
|
|
blnum++;
|
|
}
|
|
|
|
attrnum = NTFS_A_INDX;
|
|
aoff = 0;
|
|
if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen)
|
|
break;
|
|
dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum));
|
|
}
|
|
} while (iavap);
|
|
|
|
*riepp = NULL;
|
|
fp->f_lastdnum = 0;
|
|
|
|
fail:
|
|
if (vap)
|
|
ntfs_ntvattrrele(vap);
|
|
if (bmvap)
|
|
ntfs_ntvattrrele(bmvap);
|
|
if (iavap)
|
|
ntfs_ntvattrrele(iavap);
|
|
if (bmp)
|
|
FREE(bmp, M_TEMP);
|
|
ntfs_ntput(ip);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Convert NTFS times that are in 100 ns units and begins from
|
|
* 1601 Jan 1 into unix times.
|
|
*/
|
|
struct timespec
|
|
ntfs_nttimetounix(
|
|
u_int64_t nt)
|
|
{
|
|
struct timespec t;
|
|
|
|
/* WindowNT times are in 100 ns and from 1601 Jan 1 */
|
|
t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100;
|
|
t.tv_sec = nt / (1000 * 1000 * 10) -
|
|
369LL * 365LL * 24LL * 60LL * 60LL -
|
|
89LL * 1LL * 24LL * 60LL * 60LL;
|
|
return (t);
|
|
}
|
|
|
|
/*
|
|
* Get file times from NTFS_A_NAME attribute.
|
|
*/
|
|
int
|
|
ntfs_times(
|
|
struct ntfsmount * ntmp,
|
|
struct ntnode * ip,
|
|
ntfs_times_t * tm)
|
|
{
|
|
struct ntvattr *vap;
|
|
int error;
|
|
|
|
dprintf(("ntfs_times: ino: %d...\n", ip->i_number));
|
|
|
|
error = ntfs_ntget(ip);
|
|
if (error)
|
|
return (error);
|
|
|
|
error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap);
|
|
if (error) {
|
|
ntfs_ntput(ip);
|
|
return (error);
|
|
}
|
|
*tm = vap->va_a_name->n_times;
|
|
ntfs_ntvattrrele(vap);
|
|
ntfs_ntput(ip);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Get file sizes from corresponding attribute.
|
|
*
|
|
* ntnode under fnode should be locked.
|
|
*/
|
|
int
|
|
ntfs_filesize(
|
|
struct ntfsmount * ntmp,
|
|
struct fnode * fp,
|
|
u_int64_t * size,
|
|
u_int64_t * bytes)
|
|
{
|
|
struct ntvattr *vap;
|
|
struct ntnode *ip = FTONT(fp);
|
|
u_int64_t sz, bn;
|
|
int error;
|
|
|
|
dprintf(("ntfs_filesize: ino: %d\n", ip->i_number));
|
|
|
|
error = ntfs_ntvattrget(ntmp, ip,
|
|
fp->f_attrtype, fp->f_attrname, 0, &vap);
|
|
if (error)
|
|
return (error);
|
|
|
|
bn = vap->va_allocated;
|
|
sz = vap->va_datalen;
|
|
|
|
dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n",
|
|
(u_int32_t) sz, (u_int32_t) bn));
|
|
|
|
if (size)
|
|
*size = sz;
|
|
if (bytes)
|
|
*bytes = bn;
|
|
|
|
ntfs_ntvattrrele(vap);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This is one of write routine.
|
|
*/
|
|
int
|
|
ntfs_writeattr_plain(
|
|
struct ntfsmount * ntmp,
|
|
struct ntnode * ip,
|
|
u_int32_t attrnum,
|
|
char *attrname,
|
|
off_t roff,
|
|
size_t rsize,
|
|
void *rdata,
|
|
size_t * initp,
|
|
struct uio *uio)
|
|
{
|
|
size_t init;
|
|
int error = 0;
|
|
off_t off = roff, left = rsize, towrite;
|
|
caddr_t data = rdata;
|
|
struct ntvattr *vap;
|
|
*initp = 0;
|
|
|
|
while (left) {
|
|
error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
|
|
ntfs_btocn(off), &vap);
|
|
if (error)
|
|
return (error);
|
|
towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
|
|
ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n",
|
|
(u_int32_t) off, (u_int32_t) towrite,
|
|
(u_int32_t) vap->va_vcnstart,
|
|
(u_int32_t) vap->va_vcnend));
|
|
error = ntfs_writentvattr_plain(ntmp, ip, vap,
|
|
off - ntfs_cntob(vap->va_vcnstart),
|
|
towrite, data, &init, uio);
|
|
if (error) {
|
|
printf("ntfs_writeattr_plain: " \
|
|
"ntfs_writentvattr_plain failed: o: %d, s: %d\n",
|
|
(u_int32_t) off, (u_int32_t) towrite);
|
|
printf("ntfs_writeattr_plain: attrib: %d - %d\n",
|
|
(u_int32_t) vap->va_vcnstart,
|
|
(u_int32_t) vap->va_vcnend);
|
|
ntfs_ntvattrrele(vap);
|
|
break;
|
|
}
|
|
ntfs_ntvattrrele(vap);
|
|
left -= towrite;
|
|
off += towrite;
|
|
data = data + towrite;
|
|
*initp += init;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is one of write routine.
|
|
*
|
|
* ntnode should be locked.
|
|
*/
|
|
int
|
|
ntfs_writentvattr_plain(
|
|
struct ntfsmount * ntmp,
|
|
struct ntnode * ip,
|
|
struct ntvattr * vap,
|
|
off_t roff,
|
|
size_t rsize,
|
|
void *rdata,
|
|
size_t * initp,
|
|
struct uio *uio)
|
|
{
|
|
int error = 0;
|
|
int off;
|
|
int cnt;
|
|
cn_t ccn, ccl, cn, left, cl;
|
|
caddr_t data = rdata;
|
|
struct buf *bp;
|
|
size_t tocopy;
|
|
|
|
*initp = 0;
|
|
|
|
if ((vap->va_flag & NTFS_AF_INRUN) == 0) {
|
|
printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n");
|
|
return ENOTTY;
|
|
}
|
|
|
|
ddprintf(("ntfs_writentvattr_plain: data in run: %d chains\n",
|
|
vap->va_vruncnt));
|
|
|
|
off = roff;
|
|
left = rsize;
|
|
ccl = 0;
|
|
ccn = 0;
|
|
cnt = 0;
|
|
for (; left && (cnt < vap->va_vruncnt); cnt++) {
|
|
ccn = vap->va_vruncn[cnt];
|
|
ccl = vap->va_vruncl[cnt];
|
|
|
|
ddprintf(("ntfs_writentvattr_plain: " \
|
|
"left %d, cn: 0x%x, cl: %d, off: %d\n", \
|
|
(u_int32_t) left, (u_int32_t) ccn, \
|
|
(u_int32_t) ccl, (u_int32_t) off));
|
|
|
|
if (ntfs_cntob(ccl) < off) {
|
|
off -= ntfs_cntob(ccl);
|
|
cnt++;
|
|
continue;
|
|
}
|
|
if (!ccn && ip->i_number != NTFS_BOOTINO)
|
|
continue; /* XXX */
|
|
|
|
ccl -= ntfs_btocn(off);
|
|
cn = ccn + ntfs_btocn(off);
|
|
off = ntfs_btocnoff(off);
|
|
|
|
while (left && ccl) {
|
|
#if defined(__FreeBSD__)
|
|
tocopy = min(left,
|
|
min(ntfs_cntob(ccl) - off, MAXBSIZE - off));
|
|
#else
|
|
/* under NetBSD, bread() can read
|
|
* maximum one block worth of data */
|
|
tocopy = min(left, ntmp->ntm_bps - off);
|
|
#endif
|
|
cl = ntfs_btocl(tocopy + off);
|
|
ddprintf(("ntfs_writentvattr_plain: write: " \
|
|
"cn: 0x%x cl: %d, off: %d len: %d, left: %d\n",
|
|
(u_int32_t) cn, (u_int32_t) cl,
|
|
(u_int32_t) off, (u_int32_t) tocopy,
|
|
(u_int32_t) left));
|
|
if ((off == 0) && (tocopy == ntfs_cntob(cl)))
|
|
{
|
|
bp = getblk(ntmp->ntm_devvp, ntfs_cntobn(cn),
|
|
ntfs_cntob(cl), 0, 0);
|
|
clrbuf(bp);
|
|
} else {
|
|
error = bread(ntmp->ntm_devvp, ntfs_cntobn(cn),
|
|
ntfs_cntob(cl), NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
|
|
return (error);
|
|
}
|
|
}
|
|
if (uio)
|
|
uiomove(bp->b_data + off, tocopy, uio);
|
|
else
|
|
memcpy(bp->b_data + off, data, tocopy);
|
|
bawrite(bp);
|
|
data = data + tocopy;
|
|
*initp += tocopy;
|
|
off = 0;
|
|
left -= tocopy;
|
|
cn += cl;
|
|
ccl -= cl;
|
|
}
|
|
}
|
|
|
|
if (left) {
|
|
printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n");
|
|
error = EINVAL;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is one of read routines.
|
|
*
|
|
* ntnode should be locked.
|
|
*/
|
|
int
|
|
ntfs_readntvattr_plain(
|
|
struct ntfsmount * ntmp,
|
|
struct ntnode * ip,
|
|
struct ntvattr * vap,
|
|
off_t roff,
|
|
size_t rsize,
|
|
void *rdata,
|
|
size_t * initp,
|
|
struct uio *uio)
|
|
{
|
|
int error = 0;
|
|
int off;
|
|
|
|
*initp = 0;
|
|
if (vap->va_flag & NTFS_AF_INRUN) {
|
|
int cnt;
|
|
cn_t ccn, ccl, cn, left, cl;
|
|
caddr_t data = rdata;
|
|
struct buf *bp;
|
|
size_t tocopy;
|
|
|
|
ddprintf(("ntfs_readntvattr_plain: data in run: %d chains\n",
|
|
vap->va_vruncnt));
|
|
|
|
off = roff;
|
|
left = rsize;
|
|
ccl = 0;
|
|
ccn = 0;
|
|
cnt = 0;
|
|
while (left && (cnt < vap->va_vruncnt)) {
|
|
ccn = vap->va_vruncn[cnt];
|
|
ccl = vap->va_vruncl[cnt];
|
|
|
|
ddprintf(("ntfs_readntvattr_plain: " \
|
|
"left %d, cn: 0x%x, cl: %d, off: %d\n", \
|
|
(u_int32_t) left, (u_int32_t) ccn, \
|
|
(u_int32_t) ccl, (u_int32_t) off));
|
|
|
|
if (ntfs_cntob(ccl) < off) {
|
|
off -= ntfs_cntob(ccl);
|
|
cnt++;
|
|
continue;
|
|
}
|
|
if (ccn || ip->i_number == NTFS_BOOTINO) {
|
|
ccl -= ntfs_btocn(off);
|
|
cn = ccn + ntfs_btocn(off);
|
|
off = ntfs_btocnoff(off);
|
|
|
|
while (left && ccl) {
|
|
#if defined(__FreeBSD__)
|
|
tocopy = min(left,
|
|
min(ntfs_cntob(ccl) - off,
|
|
MAXBSIZE - off));
|
|
#else
|
|
/* under NetBSD, bread() can read
|
|
* maximum one block worth of data */
|
|
tocopy = min(left,
|
|
ntmp->ntm_bps - off);
|
|
#endif
|
|
cl = ntfs_btocl(tocopy + off);
|
|
ddprintf(("ntfs_readntvattr_plain: " \
|
|
"read: cn: 0x%x cl: %d, " \
|
|
"off: %d len: %d, left: %d\n",
|
|
(u_int32_t) cn,
|
|
(u_int32_t) cl,
|
|
(u_int32_t) off,
|
|
(u_int32_t) tocopy,
|
|
(u_int32_t) left));
|
|
error = bread(ntmp->ntm_devvp,
|
|
ntfs_cntobn(cn),
|
|
ntfs_cntob(cl),
|
|
NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
|
|
return (error);
|
|
}
|
|
if (uio) {
|
|
uiomove(bp->b_data + off,
|
|
tocopy, uio);
|
|
} else {
|
|
memcpy(data, bp->b_data + off,
|
|
tocopy);
|
|
}
|
|
brelse(bp);
|
|
data = data + tocopy;
|
|
*initp += tocopy;
|
|
off = 0;
|
|
left -= tocopy;
|
|
cn += cl;
|
|
ccl -= cl;
|
|
}
|
|
} else {
|
|
tocopy = min(left, ntfs_cntob(ccl) - off);
|
|
ddprintf(("ntfs_readntvattr_plain: "
|
|
"hole: ccn: 0x%x ccl: %d, off: %d, " \
|
|
" len: %d, left: %d\n",
|
|
(u_int32_t) ccn, (u_int32_t) ccl,
|
|
(u_int32_t) off, (u_int32_t) tocopy,
|
|
(u_int32_t) left));
|
|
left -= tocopy;
|
|
off = 0;
|
|
if (uio) {
|
|
size_t remains = tocopy;
|
|
for(; remains; remains++)
|
|
uiomove("", 1, uio);
|
|
} else
|
|
bzero(data, tocopy);
|
|
data = data + tocopy;
|
|
}
|
|
cnt++;
|
|
}
|
|
if (left) {
|
|
printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n");
|
|
error = E2BIG;
|
|
}
|
|
} else {
|
|
ddprintf(("ntfs_readnvattr_plain: data is in mft record\n"));
|
|
if (uio)
|
|
uiomove(vap->va_datap + roff, rsize, uio);
|
|
else
|
|
memcpy(rdata, vap->va_datap + roff, rsize);
|
|
*initp += rsize;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is one of read routines.
|
|
*/
|
|
int
|
|
ntfs_readattr_plain(
|
|
struct ntfsmount * ntmp,
|
|
struct ntnode * ip,
|
|
u_int32_t attrnum,
|
|
char *attrname,
|
|
off_t roff,
|
|
size_t rsize,
|
|
void *rdata,
|
|
size_t * initp,
|
|
struct uio *uio)
|
|
{
|
|
size_t init;
|
|
int error = 0;
|
|
off_t off = roff, left = rsize, toread;
|
|
caddr_t data = rdata;
|
|
struct ntvattr *vap;
|
|
*initp = 0;
|
|
|
|
while (left) {
|
|
error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
|
|
ntfs_btocn(off), &vap);
|
|
if (error)
|
|
return (error);
|
|
toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
|
|
ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n",
|
|
(u_int32_t) off, (u_int32_t) toread,
|
|
(u_int32_t) vap->va_vcnstart,
|
|
(u_int32_t) vap->va_vcnend));
|
|
error = ntfs_readntvattr_plain(ntmp, ip, vap,
|
|
off - ntfs_cntob(vap->va_vcnstart),
|
|
toread, data, &init, uio);
|
|
if (error) {
|
|
printf("ntfs_readattr_plain: " \
|
|
"ntfs_readntvattr_plain failed: o: %d, s: %d\n",
|
|
(u_int32_t) off, (u_int32_t) toread);
|
|
printf("ntfs_readattr_plain: attrib: %d - %d\n",
|
|
(u_int32_t) vap->va_vcnstart,
|
|
(u_int32_t) vap->va_vcnend);
|
|
ntfs_ntvattrrele(vap);
|
|
break;
|
|
}
|
|
ntfs_ntvattrrele(vap);
|
|
left -= toread;
|
|
off += toread;
|
|
data = data + toread;
|
|
*initp += init;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This is one of read routines.
|
|
*/
|
|
int
|
|
ntfs_readattr(
|
|
struct ntfsmount * ntmp,
|
|
struct ntnode * ip,
|
|
u_int32_t attrnum,
|
|
char *attrname,
|
|
off_t roff,
|
|
size_t rsize,
|
|
void *rdata,
|
|
struct uio *uio)
|
|
{
|
|
int error = 0;
|
|
struct ntvattr *vap;
|
|
size_t init;
|
|
|
|
ddprintf(("ntfs_readattr: reading %d: 0x%x, from %d size %d bytes\n",
|
|
ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize));
|
|
|
|
error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap);
|
|
if (error)
|
|
return (error);
|
|
|
|
if ((roff > vap->va_datalen) ||
|
|
(roff + rsize > vap->va_datalen)) {
|
|
ddprintf(("ntfs_readattr: offset too big\n"));
|
|
ntfs_ntvattrrele(vap);
|
|
return (E2BIG);
|
|
}
|
|
if (vap->va_compression && vap->va_compressalg) {
|
|
u_int8_t *cup;
|
|
u_int8_t *uup;
|
|
off_t off = roff, left = rsize, tocopy;
|
|
caddr_t data = rdata;
|
|
cn_t cn;
|
|
|
|
ddprintf(("ntfs_ntreadattr: compression: %d\n",
|
|
vap->va_compressalg));
|
|
|
|
MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL),
|
|
M_NTFSDECOMP, M_WAITOK);
|
|
MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL),
|
|
M_NTFSDECOMP, M_WAITOK);
|
|
|
|
cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1));
|
|
off = roff - ntfs_cntob(cn);
|
|
|
|
while (left) {
|
|
error = ntfs_readattr_plain(ntmp, ip, attrnum,
|
|
attrname, ntfs_cntob(cn),
|
|
ntfs_cntob(NTFS_COMPUNIT_CL),
|
|
cup, &init, NULL);
|
|
if (error)
|
|
break;
|
|
|
|
tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off);
|
|
|
|
if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) {
|
|
if (uio)
|
|
uiomove(cup + off, tocopy, uio);
|
|
else
|
|
memcpy(data, cup + off, tocopy);
|
|
} else if (init == 0) {
|
|
if (uio) {
|
|
size_t remains = tocopy;
|
|
for(; remains; remains--)
|
|
uiomove("", 1, uio);
|
|
}
|
|
else
|
|
bzero(data, tocopy);
|
|
} else {
|
|
error = ntfs_uncompunit(ntmp, uup, cup);
|
|
if (error)
|
|
break;
|
|
if (uio)
|
|
uiomove(uup + off, tocopy, uio);
|
|
else
|
|
memcpy(data, uup + off, tocopy);
|
|
}
|
|
|
|
left -= tocopy;
|
|
data = data + tocopy;
|
|
off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL);
|
|
cn += NTFS_COMPUNIT_CL;
|
|
}
|
|
|
|
FREE(uup, M_NTFSDECOMP);
|
|
FREE(cup, M_NTFSDECOMP);
|
|
} else
|
|
error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname,
|
|
roff, rsize, rdata, &init, uio);
|
|
ntfs_ntvattrrele(vap);
|
|
return (error);
|
|
}
|
|
|
|
#if UNUSED_CODE
|
|
int
|
|
ntfs_parserun(
|
|
cn_t * cn,
|
|
cn_t * cl,
|
|
u_int8_t * run,
|
|
u_long len,
|
|
u_long *off)
|
|
{
|
|
u_int8_t sz;
|
|
int i;
|
|
|
|
if (NULL == run) {
|
|
printf("ntfs_parsetun: run == NULL\n");
|
|
return (EINVAL);
|
|
}
|
|
sz = run[(*off)++];
|
|
if (0 == sz) {
|
|
printf("ntfs_parserun: trying to go out of run\n");
|
|
return (E2BIG);
|
|
}
|
|
*cl = 0;
|
|
if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
|
|
printf("ntfs_parserun: " \
|
|
"bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
|
|
sz, len, *off);
|
|
return (EINVAL);
|
|
}
|
|
for (i = 0; i < (sz & 0xF); i++)
|
|
*cl += (u_int32_t) run[(*off)++] << (i << 3);
|
|
|
|
sz >>= 4;
|
|
if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
|
|
printf("ntfs_parserun: " \
|
|
"bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
|
|
sz, len, *off);
|
|
return (EINVAL);
|
|
}
|
|
for (i = 0; i < (sz & 0xF); i++)
|
|
*cn += (u_int32_t) run[(*off)++] << (i << 3);
|
|
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Process fixup routine on given buffer.
|
|
*/
|
|
int
|
|
ntfs_procfixups(
|
|
struct ntfsmount * ntmp,
|
|
u_int32_t magic,
|
|
caddr_t buf,
|
|
size_t len)
|
|
{
|
|
struct fixuphdr *fhp = (struct fixuphdr *) buf;
|
|
int i;
|
|
u_int16_t fixup;
|
|
u_int16_t *fxp;
|
|
u_int16_t *cfxp;
|
|
|
|
if (fhp->fh_magic != magic) {
|
|
printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n",
|
|
fhp->fh_magic, magic);
|
|
return (EINVAL);
|
|
}
|
|
if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) {
|
|
printf("ntfs_procfixups: " \
|
|
"bad fixups number: %d for %ld bytes block\n",
|
|
fhp->fh_fnum, (long)len); /* XXX printf kludge */
|
|
return (EINVAL);
|
|
}
|
|
if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) {
|
|
printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff);
|
|
return (EINVAL);
|
|
}
|
|
fxp = (u_int16_t *) (buf + fhp->fh_foff);
|
|
cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2);
|
|
fixup = *fxp++;
|
|
for (i = 1; i < fhp->fh_fnum; i++, fxp++) {
|
|
if (*cfxp != fixup) {
|
|
printf("ntfs_procfixups: fixup %d doesn't match\n", i);
|
|
return (EINVAL);
|
|
}
|
|
*cfxp = *fxp;
|
|
((caddr_t) cfxp) += ntmp->ntm_bps;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
#if UNUSED_CODE
|
|
int
|
|
ntfs_runtocn(
|
|
cn_t * cn,
|
|
struct ntfsmount * ntmp,
|
|
u_int8_t * run,
|
|
u_long len,
|
|
cn_t vcn)
|
|
{
|
|
cn_t ccn = 0;
|
|
cn_t ccl = 0;
|
|
u_long off = 0;
|
|
int error = 0;
|
|
|
|
#if NTFS_DEBUG
|
|
int i;
|
|
printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n",
|
|
run, len, (u_long) vcn);
|
|
printf("ntfs_runtocn: run: ");
|
|
for (i = 0; i < len; i++)
|
|
printf("0x%02x ", run[i]);
|
|
printf("\n");
|
|
#endif
|
|
|
|
if (NULL == run) {
|
|
printf("ntfs_runtocn: run == NULL\n");
|
|
return (EINVAL);
|
|
}
|
|
do {
|
|
if (run[off] == 0) {
|
|
printf("ntfs_runtocn: vcn too big\n");
|
|
return (E2BIG);
|
|
}
|
|
vcn -= ccl;
|
|
error = ntfs_parserun(&ccn, &ccl, run, len, &off);
|
|
if (error) {
|
|
printf("ntfs_runtocn: ntfs_parserun failed\n");
|
|
return (error);
|
|
}
|
|
} while (ccl <= vcn);
|
|
*cn = ccn + vcn;
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* this initializes toupper table & dependant variables to be ready for
|
|
* later work
|
|
*/
|
|
void
|
|
ntfs_toupper_init()
|
|
{
|
|
ntfs_toupper_tab = (wchar *) NULL;
|
|
lockinit(&ntfs_toupper_lock, PVFS, "ntfs_toupper", 0, 0);
|
|
ntfs_toupper_usecount = 0;
|
|
}
|
|
|
|
void
|
|
ntfs_toupper_destroy(void)
|
|
{
|
|
|
|
lockdestroy(&ntfs_toupper_lock);
|
|
}
|
|
|
|
/*
|
|
* if the ntfs_toupper_tab[] is filled already, just raise use count;
|
|
* otherwise read the data from the filesystem we are currently mounting
|
|
*/
|
|
int
|
|
ntfs_toupper_use(mp, ntmp)
|
|
struct mount *mp;
|
|
struct ntfsmount *ntmp;
|
|
{
|
|
int error = 0;
|
|
struct vnode *vp;
|
|
|
|
/* get exclusive access */
|
|
LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL);
|
|
|
|
/* only read the translation data from a file if it hasn't been
|
|
* read already */
|
|
if (ntfs_toupper_tab)
|
|
goto out;
|
|
|
|
/*
|
|
* Read in Unicode lowercase -> uppercase translation file.
|
|
* XXX for now, just the first 256 entries are used anyway,
|
|
* so don't bother reading more
|
|
*/
|
|
MALLOC(ntfs_toupper_tab, wchar *, 256 * sizeof(wchar),
|
|
M_NTFSRDATA, M_WAITOK);
|
|
|
|
if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp)))
|
|
goto out;
|
|
error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
|
|
0, 256*sizeof(wchar), (char *) ntfs_toupper_tab, NULL);
|
|
vput(vp);
|
|
|
|
out:
|
|
ntfs_toupper_usecount++;
|
|
LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* lower the use count and if it reaches zero, free the memory
|
|
* tied by toupper table
|
|
*/
|
|
void
|
|
ntfs_toupper_unuse()
|
|
{
|
|
/* get exclusive access */
|
|
LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL);
|
|
|
|
ntfs_toupper_usecount--;
|
|
if (ntfs_toupper_usecount == 0) {
|
|
FREE(ntfs_toupper_tab, M_NTFSRDATA);
|
|
ntfs_toupper_tab = NULL;
|
|
}
|
|
#ifdef DIAGNOSTIC
|
|
else if (ntfs_toupper_usecount < 0) {
|
|
panic("ntfs_toupper_unuse(): use count negative: %d\n",
|
|
ntfs_toupper_usecount);
|
|
}
|
|
#endif
|
|
|
|
/* release the lock */
|
|
LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL);
|
|
}
|
|
|
|
/*
|
|
* maps the Unicode char to 8bit equivalent
|
|
* XXX currently only gets lower 8bit from the Unicode char
|
|
* and substitutes a '_' for it if the result would be '\0';
|
|
* something better has to be definitely though out
|
|
*/
|
|
char
|
|
ntfs_u28(unichar)
|
|
wchar unichar;
|
|
{
|
|
return (char) NTFS_U28(unichar);
|
|
}
|
|
|