1 /* $NetBSD: ntfs_subr.c,v 1.23 1999/10/31 19:45:26 jdolecek Exp $ */
4 * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/sys/ntfs/ntfs_subr.c,v 1.7.2.4 2001/10/12 22:08:49 semenu Exp $
29 * $DragonFly: src/sys/vfs/ntfs/ntfs_subr.c,v 1.25 2006/12/23 00:41:30 swildner Exp $
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/systm.h>
36 #include <sys/namei.h>
37 #include <sys/kernel.h>
38 #include <sys/vnode.h>
39 #include <sys/mount.h>
42 #include <sys/malloc.h>
44 #include <sys/spinlock.h>
45 #include <sys/spinlock2.h>
47 #include <machine/inttypes.h>
49 #if defined(__NetBSD__)
50 #include <miscfs/specfs/specdev.h>
53 /* #define NTFS_DEBUG 1 */
55 #include "ntfsmount.h"
56 #include "ntfs_inode.h"
57 #include "ntfs_vfsops.h"
58 #include "ntfs_subr.h"
59 #include "ntfs_compr.h"
60 #include "ntfs_ihash.h"
62 #if defined(__DragonFly__)
63 MALLOC_DEFINE(M_NTFSNTVATTR, "NTFS vattr", "NTFS file attribute information");
64 MALLOC_DEFINE(M_NTFSRDATA, "NTFS res data", "NTFS resident data");
65 MALLOC_DEFINE(M_NTFSRUN, "NTFS vrun", "NTFS vrun storage");
66 MALLOC_DEFINE(M_NTFSDECOMP, "NTFS decomp", "NTFS decompression temporary");
69 static int ntfs_ntlookupattr (struct ntfsmount *, const char *, int, int *, char **);
70 static int ntfs_findvattr (struct ntfsmount *, struct ntnode *, struct ntvattr **, struct ntvattr **, u_int32_t, const char *, size_t, cn_t);
71 static int ntfs_uastricmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t);
72 static int ntfs_uastrcmp (struct ntfsmount *, const wchar *, size_t, const char *, size_t);
74 /* table for mapping Unicode chars into uppercase; it's filled upon first
75 * ntfs mount, freed upon last ntfs umount */
76 static wchar *ntfs_toupper_tab;
77 #define NTFS_TOUPPER(ch) (ntfs_toupper_tab[(ch)])
78 static struct lock ntfs_toupper_lock;
79 static signed int ntfs_toupper_usecount;
81 /* support macro for ntfs_ntvattrget() */
82 #define NTFS_AALPCMP(aalp,type,name,namelen) ( \
83 (aalp->al_type == type) && (aalp->al_namelen == namelen) && \
84 !NTFS_UASTRCMP(aalp->al_name,aalp->al_namelen,name,namelen) )
90 ntfs_ntvattrrele(struct ntvattr *vap)
92 dprintf(("ntfs_ntvattrrele: ino: %"PRId64", type: 0x%x\n",
93 vap->va_ip->i_number, vap->va_type));
95 ntfs_ntrele(vap->va_ip);
101 * find the attribute in the ntnode
104 ntfs_findvattr(struct ntfsmount *ntmp, struct ntnode *ip,
105 struct ntvattr **lvapp, struct ntvattr **vapp, u_int32_t type,
106 const char *name, size_t namelen, cn_t vcn)
111 if((ip->i_flag & IN_LOADED) == 0) {
112 dprintf(("ntfs_findvattr: node not loaded, ino: %"PRId64"\n",
114 error = ntfs_loadntnode(ntmp,ip);
116 kprintf("ntfs_findvattr: FAILED TO LOAD INO: %"PRId64"\n",
124 for (vap = ip->i_valist.lh_first; vap; vap = vap->va_list.le_next) {
125 ddprintf(("ntfs_findvattr: type: 0x%x, vcn: %d - %d\n", \
126 vap->va_type, (u_int32_t) vap->va_vcnstart, \
127 (u_int32_t) vap->va_vcnend));
128 if ((vap->va_type == type) &&
129 (vap->va_vcnstart <= vcn) && (vap->va_vcnend >= vcn) &&
130 (vap->va_namelen == namelen) &&
131 (strncmp(name, vap->va_name, namelen) == 0)) {
133 ntfs_ntref(vap->va_ip);
136 if (vap->va_type == NTFS_A_ATTRLIST)
144 * Search attribute specifed in ntnode (load ntnode if nessecary).
145 * If not found but ATTR_A_ATTRLIST present, read it in and search throught.
146 * VOP_VGET node needed, and lookup througth it's ntnode (load if nessesary).
148 * ntnode should be locked
151 ntfs_ntvattrget(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t type,
152 const char *name, cn_t vcn, struct ntvattr **vapp)
154 struct ntvattr *lvap = NULL;
155 struct attr_attrlist *aalp;
156 struct attr_attrlist *nextaalp;
158 struct ntnode *newip;
166 dprintf(("ntfs_ntvattrget: " \
167 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \
168 ip->i_number, type, name, (u_int32_t) vcn));
169 namelen = strlen(name);
171 dprintf(("ntfs_ntvattrget: " \
172 "ino: %"PRId64", type: 0x%x, vcn: %d\n", \
173 ip->i_number, type, (u_int32_t) vcn));
178 error = ntfs_findvattr(ntmp, ip, &lvap, vapp, type, name, namelen, vcn);
183 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \
184 "ino: %"PRId64", type: 0x%x, name: %s, vcn: %d\n", \
185 ip->i_number, type, name, (u_int32_t) vcn));
188 /* Scan $ATTRIBUTE_LIST for requested attribute */
189 len = lvap->va_datalen;
190 MALLOC(alpool, caddr_t, len, M_TEMP, M_WAITOK);
191 error = ntfs_readntvattr_plain(ntmp, ip, lvap, 0, len, alpool, &len,
196 aalp = (struct attr_attrlist *) alpool;
199 for(; len > 0; aalp = nextaalp) {
200 dprintf(("ntfs_ntvattrget: " \
201 "attrlist: ino: %d, attr: 0x%x, vcn: %d\n", \
202 aalp->al_inumber, aalp->al_type, \
203 (u_int32_t) aalp->al_vcnstart));
205 if (len > aalp->reclen) {
206 nextaalp = NTFS_NEXTREC(aalp, struct attr_attrlist *);
212 if (!NTFS_AALPCMP(aalp, type, name, namelen) ||
213 (nextaalp && (nextaalp->al_vcnstart <= vcn) &&
214 NTFS_AALPCMP(nextaalp, type, name, namelen)))
217 dprintf(("ntfs_ntvattrget: attribute in ino: %d\n",
220 /* this is not a main record, so we can't use just plain
222 error = ntfs_vgetex(ntmp->ntm_mountp, aalp->al_inumber,
223 NTFS_A_DATA, NULL, LK_EXCLUSIVE,
224 VG_EXT, curthread, &newvp);
226 kprintf("ntfs_ntvattrget: CAN'T VGET INO: %d\n",
230 newip = VTONT(newvp);
231 /* XXX have to lock ntnode */
232 error = ntfs_findvattr(ntmp, newip, &lvap, vapp,
233 type, name, namelen, vcn);
237 kprintf("ntfs_ntvattrget: ATTRLIST ERROR.\n");
242 dprintf(("ntfs_ntvattrget: UNEXISTED ATTRIBUTE: " \
243 "ino: %"PRId64", type: 0x%x, name: %.*s, vcn: %d\n", \
244 ip->i_number, type, (int) namelen, name, (u_int32_t) vcn));
246 FREE(alpool, M_TEMP);
251 * Read ntnode from disk, make ntvattr list.
253 * ntnode should be locked
256 ntfs_loadntnode(struct ntfsmount *ntmp, struct ntnode *ip)
258 struct filerec *mfrp;
262 struct ntvattr *nvap;
264 dprintf(("ntfs_loadntnode: loading ino: %"PRId64"\n",ip->i_number));
266 MALLOC(mfrp, struct filerec *, ntfs_bntob(ntmp->ntm_bpmftrec),
269 if (ip->i_number < NTFS_SYSNODESNUM) {
272 dprintf(("ntfs_loadntnode: read system node\n"));
274 bn = ntfs_cntobn(ntmp->ntm_mftcn) +
275 ntmp->ntm_bpmftrec * ip->i_number;
277 error = bread(ntmp->ntm_devvp,
278 ntfs_bntodoff(bn), ntfs_bntob(ntmp->ntm_bpmftrec), &bp);
280 kprintf("ntfs_loadntnode: BREAD FAILED\n");
284 memcpy(mfrp, bp->b_data, ntfs_bntob(ntmp->ntm_bpmftrec));
289 vp = ntmp->ntm_sysvn[NTFS_MFTINO];
290 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
291 ip->i_number * ntfs_bntob(ntmp->ntm_bpmftrec),
292 ntfs_bntob(ntmp->ntm_bpmftrec), mfrp, NULL);
294 kprintf("ntfs_loadntnode: ntfs_readattr failed\n");
299 /* Check if magic and fixups are correct */
300 error = ntfs_procfixups(ntmp, NTFS_FILEMAGIC, (caddr_t)mfrp,
301 ntfs_bntob(ntmp->ntm_bpmftrec));
303 kprintf("ntfs_loadntnode: BAD MFT RECORD %"PRId64"\n",
308 dprintf(("ntfs_loadntnode: load attrs for ino: %"PRId64"\n",ip->i_number));
309 off = mfrp->fr_attroff;
310 ap = (struct attr *) ((caddr_t)mfrp + off);
312 LIST_INIT(&ip->i_valist);
314 while (ap->a_hdr.a_type != -1) {
315 error = ntfs_attrtontvattr(ntmp, &nvap, ap);
320 LIST_INSERT_HEAD(&ip->i_valist, nvap, va_list);
322 off += ap->a_hdr.reclen;
323 ap = (struct attr *) ((caddr_t)mfrp + off);
326 kprintf("ntfs_loadntnode: failed to load attr ino: %"PRId64"\n",
331 ip->i_mainrec = mfrp->fr_mainrec;
332 ip->i_nlink = mfrp->fr_nlink;
333 ip->i_frflag = mfrp->fr_flags;
335 ip->i_flag |= IN_LOADED;
343 * Routine locks ntnode and increase usecount, just opposite of
347 ntfs_ntget(struct ntnode *ip)
349 dprintf(("ntfs_ntget: get ntnode %"PRId64": %p, usecount: %d\n",
350 ip->i_number, ip, ip->i_usecount));
352 ip->i_usecount++; /* ZZZ */
353 LOCKMGR(&ip->i_lock, LK_EXCLUSIVE);
359 * Routine search ntnode in hash, if found: lock, inc usecount and return.
360 * If not in hash allocate structure for ntnode, prefill it, lock,
361 * inc count and return.
363 * ntnode returned locked
366 ntfs_ntlookup(struct ntfsmount *ntmp, ino_t ino, struct ntnode **ipp)
370 dprintf(("ntfs_ntlookup: looking for ntnode %d\n", ino));
373 if ((ip = ntfs_nthashlookup(ntmp->ntm_dev, ino)) != NULL) {
375 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n",
376 ino, ip, ip->i_usecount));
380 } while (LOCKMGR(&ntfs_hashlock, LK_EXCLUSIVE | LK_SLEEPFAIL));
382 MALLOC(ip, struct ntnode *, sizeof(struct ntnode),
383 M_NTFSNTNODE, M_WAITOK);
384 ddprintf(("ntfs_ntlookup: allocating ntnode: %d: %p\n", ino, ip));
385 bzero((caddr_t) ip, sizeof(struct ntnode));
387 /* Generic initialization */
388 ip->i_devvp = ntmp->ntm_devvp;
389 ip->i_dev = ntmp->ntm_dev;
393 LIST_INIT(&ip->i_fnlist);
396 /* init lock and lock the newborn ntnode */
397 lockinit(&ip->i_lock, "ntnode", 0, LK_EXCLUSIVE);
398 spin_init(&ip->i_interlock);
403 LOCKMGR(&ntfs_hashlock, LK_RELEASE);
407 dprintf(("ntfs_ntlookup: ntnode %d: %p, usecount: %d\n",
408 ino, ip, ip->i_usecount));
414 * Decrement usecount of ntnode and unlock it, if usecount reach zero,
417 * ntnode should be locked on entry, and unlocked on return.
420 ntfs_ntput(struct ntnode *ip)
424 dprintf(("ntfs_ntput: rele ntnode %"PRId64": %p, usecount: %d\n",
425 ip->i_number, ip, ip->i_usecount));
427 spin_lock_wr(&ip->i_interlock);
431 if (ip->i_usecount < 0) {
432 spin_unlock_wr(&ip->i_interlock);
433 panic("ntfs_ntput: ino: %"PRId64" usecount: %d \n",
434 ip->i_number,ip->i_usecount);
438 if (ip->i_usecount > 0) {
439 spin_unlock_wr(&ip->i_interlock);
440 LOCKMGR(&ip->i_lock, LK_RELEASE);
444 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number));
446 if (ip->i_fnlist.lh_first) {
447 spin_unlock_wr(&ip->i_interlock);
448 panic("ntfs_ntput: ntnode has fnodes\n");
452 * XXX this is a bit iffy because we are making high level calls
453 * while holding a spinlock.
457 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) {
458 LIST_REMOVE(vap,va_list);
459 ntfs_freentvattr(vap);
461 spin_unlock_wr(&ip->i_interlock);
463 FREE(ip, M_NTFSNTNODE);
467 * increment usecount of ntnode
470 ntfs_ntref(struct ntnode *ip)
474 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n",
475 ip->i_number, ip->i_usecount));
480 * Decrement usecount of ntnode.
483 ntfs_ntrele(struct ntnode *ip)
485 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n",
486 ip->i_number, ip, ip->i_usecount));
488 spin_lock_wr(&ip->i_interlock);
491 if (ip->i_usecount < 0) {
492 spin_unlock_wr(&ip->i_interlock);
493 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d \n",
494 ip->i_number,ip->i_usecount);
496 spin_unlock_wr(&ip->i_interlock);
500 * Deallocate all memory allocated for ntvattr
503 ntfs_freentvattr(struct ntvattr *vap)
505 if (vap->va_flag & NTFS_AF_INRUN) {
507 FREE(vap->va_vruncn, M_NTFSRUN);
509 FREE(vap->va_vruncl, M_NTFSRUN);
512 FREE(vap->va_datap, M_NTFSRDATA);
514 FREE(vap, M_NTFSNTVATTR);
518 * Convert disk image of attribute into ntvattr structure,
519 * runs are expanded also.
522 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp,
531 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr),
532 M_NTFSNTVATTR, M_WAITOK);
533 bzero(vap, sizeof(struct ntvattr));
535 vap->va_flag = rap->a_hdr.a_flag;
536 vap->va_type = rap->a_hdr.a_type;
537 vap->va_compression = rap->a_hdr.a_compression;
538 vap->va_index = rap->a_hdr.a_index;
540 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index));
542 vap->va_namelen = rap->a_hdr.a_namelen;
543 if (rap->a_hdr.a_namelen) {
544 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff);
545 ddprintf((", name:["));
546 for (i = 0; i < vap->va_namelen; i++) {
547 vap->va_name[i] = unp[i];
548 ddprintf(("%c", vap->va_name[i]));
552 if (vap->va_flag & NTFS_AF_INRUN) {
553 ddprintf((", nonres."));
554 vap->va_datalen = rap->a_nr.a_datalen;
555 vap->va_allocated = rap->a_nr.a_allocated;
556 vap->va_vcnstart = rap->a_nr.a_vcnstart;
557 vap->va_vcnend = rap->a_nr.a_vcnend;
558 vap->va_compressalg = rap->a_nr.a_compressalg;
559 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl),
561 (caddr_t) rap + rap->a_nr.a_dataoff);
563 vap->va_compressalg = 0;
564 ddprintf((", res."));
565 vap->va_datalen = rap->a_r.a_datalen;
566 vap->va_allocated = rap->a_r.a_datalen;
567 vap->va_vcnstart = 0;
568 vap->va_vcnend = ntfs_btocn(vap->va_allocated);
569 MALLOC(vap->va_datap, caddr_t, vap->va_datalen,
570 M_NTFSRDATA, M_WAITOK);
571 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff,
574 ddprintf((", len: %d", vap->va_datalen));
577 FREE(vap, M_NTFSNTVATTR);
587 * Expand run into more utilizable and more memory eating format.
590 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run)
604 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1;
607 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
608 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
618 for (i = 0; i < (sz & 0xF); i++)
619 cl[cnt] += (u_int32_t) run[off++] << (i << 3);
622 if (run[off + sz - 1] & 0x80) {
623 tmp = ((u_int64_t) - 1) << (sz << 3);
624 for (i = 0; i < sz; i++)
625 tmp |= (u_int64_t) run[off++] << (i << 3);
628 for (i = 0; i < sz; i++)
629 tmp |= (u_int64_t) run[off++] << (i << 3);
632 prev = cn[cnt] = prev + tmp;
645 * Compare unicode and ascii string case insens.
648 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen,
649 const char *astr, size_t astrlen)
655 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode
656 * symbols not covered by translation table
658 for (i = 0; i < ustrlen && i < astrlen; i++) {
659 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) -
660 ((int)NTFS_TOUPPER(NTFS_82U(astr[i])));
664 return (ustrlen - astrlen);
668 * Compare unicode and ascii string case sens.
671 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen,
672 const char *astr, size_t astrlen)
677 for (i = 0; (i < ustrlen) && (i < astrlen); i++) {
678 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]);
682 return (ustrlen - astrlen);
686 * Search fnode in ntnode, if not found allocate and preinitialize.
688 * ntnode should be locked on entry.
691 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype,
692 char *attrname, struct fnode **fpp)
696 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n",
697 ip->i_number,attrtype, attrname?attrname:""));
699 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){
700 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n",
701 fp->f_attrtype, fp->f_attrname?fp->f_attrname:""));
703 if ((attrtype == fp->f_attrtype) &&
704 ((!attrname && !fp->f_attrname) ||
705 (attrname && fp->f_attrname &&
706 !strcmp(attrname,fp->f_attrname)))){
707 dprintf(("ntfs_fget: found existed: %p\n",fp));
715 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK);
716 bzero(fp, sizeof(struct fnode));
717 dprintf(("ntfs_fget: allocating fnode: %p\n",fp));
721 fp->f_flag |= FN_AATTRNAME;
722 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK);
723 strcpy(fp->f_attrname, attrname);
725 fp->f_attrname = NULL;
726 fp->f_attrtype = attrtype;
730 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist);
738 * Deallocate fnode, remove it from ntnode's fnode list.
740 * ntnode should be locked.
743 ntfs_frele(struct fnode *fp)
745 struct ntnode *ip = FTONT(fp);
747 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip));
749 dprintf(("ntfs_frele: deallocating fnode\n"));
750 LIST_REMOVE(fp,f_fnlist);
751 if (fp->f_flag & FN_AATTRNAME)
752 FREE(fp->f_attrname, M_TEMP);
754 FREE(fp->f_dirblbuf, M_NTFSDIR);
755 FREE(fp, M_NTFSFNODE);
760 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME],
761 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs.
762 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed.
765 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen,
766 int *attrtype, char **attrname)
770 struct ntvattrdef *adp;
775 if (name[0] == '$') {
777 for (syslen = 0; syslen < namelen; syslen++) {
778 if(sys[syslen] == ':') {
788 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){
789 if (syslen != adp->ad_namelen ||
790 strncmp(sys, adp->ad_name, syslen) != 0)
793 *attrtype = adp->ad_type;
798 *attrtype = NTFS_A_DATA;
802 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK);
803 memcpy((*attrname), name, namelen);
804 (*attrname)[namelen] = '\0';
811 * Lookup specifed node for filename, matching cnp,
812 * return fnode filled.
815 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp,
816 struct componentname *cnp, struct vnode **vpp)
818 struct fnode *fp = VTOF(vp);
819 struct ntnode *ip = FTONT(fp);
820 struct ntvattr *vap; /* Root attribute */
821 cn_t cn; /* VCN in current attribute */
822 caddr_t rdbuf; /* Buffer to read directory's blocks */
824 u_int32_t rdsize; /* Length of data to read from current block */
825 struct attr_indexentry *iep;
826 int error, res, anamelen, fnamelen;
827 const char *fname,*aname;
829 int attrtype = NTFS_A_DATA;
830 char *attrname = NULL;
835 error = ntfs_ntget(ip);
839 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
840 if (error || (vap->va_flag & NTFS_AF_INRUN))
843 blsize = vap->va_a_iroot->ir_size;
844 rdsize = vap->va_datalen;
847 * Divide file name into: foofilefoofilefoofile[:attrspec]
848 * Store like this: fname:fnamelen [aname:anamelen]
850 fname = cnp->cn_nameptr;
853 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++)
854 if(fname[fnamelen] == ':') {
855 aname = fname + fnamelen + 1;
856 anamelen = cnp->cn_namelen - fnamelen - 1;
857 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n",
858 fname, fnamelen, aname, anamelen));
862 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize));
864 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK);
866 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30",
867 0, rdsize, rdbuf, NULL);
871 aoff = sizeof(struct attr_indexroot);
874 iep = (struct attr_indexentry *) (rdbuf + aoff);
876 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
878 iep = (struct attr_indexentry *) (rdbuf + aoff))
880 ddprintf(("scan: %d, %d\n",
881 (u_int32_t) iep->ie_number,
882 (u_int32_t) iep->ie_fnametype));
884 /* check the name - the case-insensitible check
885 * has to come first, to break from this for loop
886 * if needed, so we can dive correctly */
887 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen,
890 if (res < 0) continue;
892 if (iep->ie_fnametype == 0 ||
893 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS))
895 res = NTFS_UASTRCMP(iep->ie_fname,
896 iep->ie_fnamelen, fname, fnamelen);
897 if (res != 0) continue;
901 error = ntfs_ntlookupattr(ntmp,
903 &attrtype, &attrname);
908 /* Check if we've found ourself */
909 if ((iep->ie_number == ip->i_number) &&
910 (attrtype == fp->f_attrtype) &&
911 ((!attrname && !fp->f_attrname) ||
912 (attrname && fp->f_attrname &&
913 !strcmp(attrname, fp->f_attrname))))
921 /* vget node, but don't load it */
922 error = ntfs_vgetex(ntmp->ntm_mountp,
923 iep->ie_number, attrtype, attrname,
924 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN,
927 /* free the buffer returned by ntfs_ntlookupattr() */
929 FREE(attrname, M_TEMP);
938 if (nfp->f_flag & FN_VALID) {
943 nfp->f_fflag = iep->ie_fflag;
944 nfp->f_pnumber = iep->ie_fpnumber;
945 nfp->f_times = iep->ie_ftimes;
947 if((nfp->f_fflag & NTFS_FFLAG_DIR) &&
948 (nfp->f_attrtype == NTFS_A_DATA) &&
949 (nfp->f_attrname == NULL))
954 nvp->v_type = f_type;
956 if ((nfp->f_attrtype == NTFS_A_DATA) &&
957 (nfp->f_attrname == NULL))
959 /* Opening default attribute */
960 nfp->f_size = iep->ie_fsize;
961 nfp->f_allocated = iep->ie_fallocated;
962 nfp->f_flag |= FN_PRELOADED;
964 error = ntfs_filesize(ntmp, nfp,
965 &nfp->f_size, &nfp->f_allocated);
971 nfp->f_flag &= ~FN_VALID;
974 * Normal files use the buffer cache
976 if (nvp->v_type == VREG)
977 vinitvmio(nvp, nfp->f_size);
982 /* Dive if possible */
983 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) {
984 dprintf(("ntfs_ntlookupfile: diving\n"));
986 cn = *(cn_t *) (rdbuf + aoff +
987 iep->reclen - sizeof(cn_t));
990 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30",
991 ntfs_cntob(cn), rdsize, rdbuf, NULL);
995 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
1000 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize +
1003 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n"));
1009 dprintf(("finish\n"));
1012 if (attrname) FREE(attrname, M_TEMP);
1013 ntfs_ntvattrrele(vap);
1015 FREE(rdbuf, M_TEMP);
1020 * Check if name type is permitted to show.
1023 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep)
1025 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)
1028 switch (iep->ie_fnametype) {
1030 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n"));
1032 case 0: case 1: case 3:
1035 kprintf("ntfs_isnamepermitted: " \
1036 "WARNING! Unknown file name type: %d\n",
1044 * Read ntfs dir like stream of attr_indexentry, not like btree of them.
1045 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them.
1046 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in
1047 * fnode, so we can skip toward record number num almost immediatly.
1048 * Anyway this is rather slow routine. The problem is that we don't know
1049 * how many records are there in $INDEX_ALLOCATION:$I30 block.
1052 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp,
1053 u_int32_t num, struct attr_indexentry **riepp)
1055 struct ntnode *ip = FTONT(fp);
1056 struct ntvattr *vap = NULL; /* IndexRoot attribute */
1057 struct ntvattr *bmvap = NULL; /* BitMap attribute */
1058 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */
1059 caddr_t rdbuf; /* Buffer to read directory's blocks */
1060 u_char *bmp = NULL; /* Bitmap */
1061 u_int32_t blsize; /* Index allocation size (2048) */
1062 u_int32_t rdsize; /* Length of data to read */
1063 u_int32_t attrnum; /* Current attribute type */
1064 u_int32_t cpbl = 1; /* Clusters per directory block */
1066 struct attr_indexentry *iep;
1068 u_int32_t aoff, cnum;
1070 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num));
1071 error = ntfs_ntget(ip);
1075 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
1079 if (fp->f_dirblbuf == NULL) {
1080 fp->f_dirblsz = vap->va_a_iroot->ir_size;
1081 MALLOC(fp->f_dirblbuf, caddr_t,
1082 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK);
1085 blsize = fp->f_dirblsz;
1086 rdbuf = fp->f_dirblbuf;
1088 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize));
1090 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) {
1091 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30",
1097 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK);
1098 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0,
1099 bmvap->va_datalen, bmp, NULL);
1103 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30",
1109 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1);
1110 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n",
1111 iavap->va_datalen, cpbl));
1113 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n"));
1114 iavap = bmvap = NULL;
1118 /* Try use previous values */
1119 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) {
1120 attrnum = fp->f_lastdattr;
1121 aoff = fp->f_lastdoff;
1122 blnum = fp->f_lastdblnum;
1123 cnum = fp->f_lastdnum;
1125 attrnum = NTFS_A_INDXROOT;
1126 aoff = sizeof(struct attr_indexroot);
1132 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n",
1133 attrnum, (u_int32_t) blnum, cnum, num, aoff));
1134 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize;
1135 error = ntfs_readattr(ntmp, ip, attrnum, "$I30",
1136 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL);
1140 if (attrnum == NTFS_A_INDX) {
1141 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
1147 aoff = (attrnum == NTFS_A_INDX) ?
1148 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) :
1149 sizeof(struct attr_indexroot);
1151 iep = (struct attr_indexentry *) (rdbuf + aoff);
1152 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
1153 aoff += iep->reclen,
1154 iep = (struct attr_indexentry *) (rdbuf + aoff))
1156 if (!ntfs_isnamepermitted(ntmp, iep)) continue;
1159 fp->f_lastdnum = cnum;
1160 fp->f_lastdoff = aoff;
1161 fp->f_lastdblnum = blnum;
1162 fp->f_lastdattr = attrnum;
1173 if (attrnum == NTFS_A_INDXROOT)
1178 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) {
1179 if (bmp[blnum >> 3] & (1 << (blnum & 3)))
1184 attrnum = NTFS_A_INDX;
1186 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen)
1188 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum));
1197 ntfs_ntvattrrele(vap);
1199 ntfs_ntvattrrele(bmvap);
1201 ntfs_ntvattrrele(iavap);
1209 * Convert NTFS times that are in 100 ns units and begins from
1210 * 1601 Jan 1 into unix times.
1213 ntfs_nttimetounix(u_int64_t nt)
1217 /* WindowNT times are in 100 ns and from 1601 Jan 1 */
1218 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100;
1219 t.tv_sec = nt / (1000 * 1000 * 10) -
1220 369LL * 365LL * 24LL * 60LL * 60LL -
1221 89LL * 1LL * 24LL * 60LL * 60LL;
1226 * Get file times from NTFS_A_NAME attribute.
1229 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm)
1231 struct ntvattr *vap;
1234 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number));
1236 error = ntfs_ntget(ip);
1240 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap);
1245 *tm = vap->va_a_name->n_times;
1246 ntfs_ntvattrrele(vap);
1253 * Get file sizes from corresponding attribute.
1255 * ntnode under fnode should be locked.
1258 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size,
1261 struct ntvattr *vap;
1262 struct ntnode *ip = FTONT(fp);
1266 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number));
1268 error = ntfs_ntvattrget(ntmp, ip,
1269 fp->f_attrtype, fp->f_attrname, 0, &vap);
1273 bn = vap->va_allocated;
1274 sz = vap->va_datalen;
1276 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n",
1277 (u_int32_t) sz, (u_int32_t) bn));
1284 ntfs_ntvattrrele(vap);
1290 * This is one of write routine.
1293 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1294 u_int32_t attrnum, char *attrname, off_t roff,
1295 size_t rsize, void *rdata, size_t *initp,
1300 off_t off = roff, left = rsize, towrite;
1301 caddr_t data = rdata;
1302 struct ntvattr *vap;
1306 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
1307 ntfs_btocn(off), &vap);
1310 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
1311 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n",
1312 (u_int32_t) off, (u_int32_t) towrite,
1313 (u_int32_t) vap->va_vcnstart,
1314 (u_int32_t) vap->va_vcnend));
1315 error = ntfs_writentvattr_plain(ntmp, ip, vap,
1316 off - ntfs_cntob(vap->va_vcnstart),
1317 towrite, data, &init, uio);
1319 kprintf("ntfs_writeattr_plain: " \
1320 "ntfs_writentvattr_plain failed: o: %d, s: %d\n",
1321 (u_int32_t) off, (u_int32_t) towrite);
1322 kprintf("ntfs_writeattr_plain: attrib: %d - %d\n",
1323 (u_int32_t) vap->va_vcnstart,
1324 (u_int32_t) vap->va_vcnend);
1325 ntfs_ntvattrrele(vap);
1328 ntfs_ntvattrrele(vap);
1331 data = data + towrite;
1339 * This is one of write routine.
1341 * ntnode should be locked.
1344 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1345 struct ntvattr *vap, off_t roff, size_t rsize,
1346 void *rdata, size_t *initp, struct uio *uio)
1351 cn_t ccn, ccl, cn, left, cl;
1352 caddr_t data = rdata;
1358 if ((vap->va_flag & NTFS_AF_INRUN) == 0) {
1359 kprintf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n");
1363 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n",
1371 for (; left && (cnt < vap->va_vruncnt); cnt++) {
1372 ccn = vap->va_vruncn[cnt];
1373 ccl = vap->va_vruncl[cnt];
1375 ddprintf(("ntfs_writentvattr_plain: " \
1376 "left %d, cn: 0x%x, cl: %d, off: %d\n", \
1377 (u_int32_t) left, (u_int32_t) ccn, \
1378 (u_int32_t) ccl, (u_int32_t) off));
1380 if (ntfs_cntob(ccl) < off) {
1381 off -= ntfs_cntob(ccl);
1385 if (!ccn && ip->i_number != NTFS_BOOTINO)
1388 ccl -= ntfs_btocn(off);
1389 cn = ccn + ntfs_btocn(off);
1390 off = ntfs_btocnoff(off);
1392 while (left && ccl) {
1393 #if defined(__DragonFly__)
1395 min(ntfs_cntob(ccl) - off, MAXBSIZE - off));
1397 /* under NetBSD, bread() can read
1398 * maximum one block worth of data */
1399 tocopy = min(left, ntmp->ntm_bps - off);
1401 cl = ntfs_btocl(tocopy + off);
1402 ddprintf(("ntfs_writentvattr_plain: write: " \
1403 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n",
1404 (u_int32_t) cn, (u_int32_t) cl,
1405 (u_int32_t) off, (u_int32_t) tocopy,
1407 if ((off == 0) && (tocopy == ntfs_cntob(cl)))
1409 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn),
1410 ntfs_cntob(cl), 0, 0);
1413 error = bread(ntmp->ntm_devvp,
1415 ntfs_cntob(cl), &bp);
1422 uiomove(bp->b_data + off, tocopy, uio);
1424 memcpy(bp->b_data + off, data, tocopy);
1426 data = data + tocopy;
1436 kprintf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n");
1444 * This is one of read routines.
1446 * ntnode should be locked.
1449 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1450 struct ntvattr *vap, off_t roff, size_t rsize,
1451 void *rdata, size_t *initp, struct uio *uio)
1457 if (vap->va_flag & NTFS_AF_INRUN) {
1459 cn_t ccn, ccl, cn, left, cl;
1460 caddr_t data = rdata;
1464 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n",
1472 while (left && (cnt < vap->va_vruncnt)) {
1473 ccn = vap->va_vruncn[cnt];
1474 ccl = vap->va_vruncl[cnt];
1476 ddprintf(("ntfs_readntvattr_plain: " \
1477 "left %d, cn: 0x%x, cl: %d, off: %d\n", \
1478 (u_int32_t) left, (u_int32_t) ccn, \
1479 (u_int32_t) ccl, (u_int32_t) off));
1481 if (ntfs_cntob(ccl) < off) {
1482 off -= ntfs_cntob(ccl);
1486 if (ccn || ip->i_number == NTFS_BOOTINO) {
1487 ccl -= ntfs_btocn(off);
1488 cn = ccn + ntfs_btocn(off);
1489 off = ntfs_btocnoff(off);
1491 while (left && ccl) {
1492 #if defined(__DragonFly__)
1494 min(ntfs_cntob(ccl) - off,
1497 /* under NetBSD, bread() can read
1498 * maximum one block worth of data */
1500 ntmp->ntm_bps - off);
1502 cl = ntfs_btocl(tocopy + off);
1503 ddprintf(("ntfs_readntvattr_plain: " \
1504 "read: cn: 0x%x cl: %d, " \
1505 "off: %d len: %d, left: %d\n",
1511 error = bread(ntmp->ntm_devvp,
1520 uiomove(bp->b_data + off,
1523 memcpy(data, bp->b_data + off,
1527 data = data + tocopy;
1535 tocopy = min(left, ntfs_cntob(ccl) - off);
1536 ddprintf(("ntfs_readntvattr_plain: "
1537 "hole: ccn: 0x%x ccl: %d, off: %d, " \
1538 " len: %d, left: %d\n",
1539 (u_int32_t) ccn, (u_int32_t) ccl,
1540 (u_int32_t) off, (u_int32_t) tocopy,
1545 size_t remains = tocopy;
1546 for(; remains; remains++)
1547 uiomove("", 1, uio);
1549 bzero(data, tocopy);
1550 data = data + tocopy;
1555 kprintf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n");
1559 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n"));
1561 uiomove(vap->va_datap + roff, rsize, uio);
1563 memcpy(rdata, vap->va_datap + roff, rsize);
1571 * This is one of read routines.
1574 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1575 u_int32_t attrnum, char *attrname, off_t roff,
1576 size_t rsize, void *rdata, size_t * initp,
1581 off_t off = roff, left = rsize, toread;
1582 caddr_t data = rdata;
1583 struct ntvattr *vap;
1587 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
1588 ntfs_btocn(off), &vap);
1591 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
1592 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n",
1593 (u_int32_t) off, (u_int32_t) toread,
1594 (u_int32_t) vap->va_vcnstart,
1595 (u_int32_t) vap->va_vcnend));
1596 error = ntfs_readntvattr_plain(ntmp, ip, vap,
1597 off - ntfs_cntob(vap->va_vcnstart),
1598 toread, data, &init, uio);
1600 kprintf("ntfs_readattr_plain: " \
1601 "ntfs_readntvattr_plain failed: o: %d, s: %d\n",
1602 (u_int32_t) off, (u_int32_t) toread);
1603 kprintf("ntfs_readattr_plain: attrib: %d - %d\n",
1604 (u_int32_t) vap->va_vcnstart,
1605 (u_int32_t) vap->va_vcnend);
1606 ntfs_ntvattrrele(vap);
1609 ntfs_ntvattrrele(vap);
1612 data = data + toread;
1620 * This is one of read routines.
1623 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum,
1624 char *attrname, off_t roff, size_t rsize, void *rdata,
1628 struct ntvattr *vap;
1631 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n",
1632 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize));
1634 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap);
1638 if ((roff > vap->va_datalen) ||
1639 (roff + rsize > vap->va_datalen)) {
1640 ddprintf(("ntfs_readattr: offset too big\n"));
1641 ntfs_ntvattrrele(vap);
1644 if (vap->va_compression && vap->va_compressalg) {
1647 off_t off = roff, left = rsize, tocopy;
1648 caddr_t data = rdata;
1651 ddprintf(("ntfs_ntreadattr: compression: %d\n",
1652 vap->va_compressalg));
1654 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL),
1655 M_NTFSDECOMP, M_WAITOK);
1656 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL),
1657 M_NTFSDECOMP, M_WAITOK);
1659 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1));
1660 off = roff - ntfs_cntob(cn);
1663 error = ntfs_readattr_plain(ntmp, ip, attrnum,
1664 attrname, ntfs_cntob(cn),
1665 ntfs_cntob(NTFS_COMPUNIT_CL),
1670 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off);
1672 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) {
1674 uiomove(cup + off, tocopy, uio);
1676 memcpy(data, cup + off, tocopy);
1677 } else if (init == 0) {
1679 size_t remains = tocopy;
1680 for(; remains; remains--)
1681 uiomove("", 1, uio);
1684 bzero(data, tocopy);
1686 error = ntfs_uncompunit(ntmp, uup, cup);
1690 uiomove(uup + off, tocopy, uio);
1692 memcpy(data, uup + off, tocopy);
1696 data = data + tocopy;
1697 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL);
1698 cn += NTFS_COMPUNIT_CL;
1701 FREE(uup, M_NTFSDECOMP);
1702 FREE(cup, M_NTFSDECOMP);
1704 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname,
1705 roff, rsize, rdata, &init, uio);
1706 ntfs_ntvattrrele(vap);
1712 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off)
1718 kprintf("ntfs_parsetun: run == NULL\n");
1723 kprintf("ntfs_parserun: trying to go out of run\n");
1727 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
1728 kprintf("ntfs_parserun: " \
1729 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
1733 for (i = 0; i < (sz & 0xF); i++)
1734 *cl += (u_int32_t) run[(*off)++] << (i << 3);
1737 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
1738 kprintf("ntfs_parserun: " \
1739 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
1743 for (i = 0; i < (sz & 0xF); i++)
1744 *cn += (u_int32_t) run[(*off)++] << (i << 3);
1751 * Process fixup routine on given buffer.
1754 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf,
1757 struct fixuphdr *fhp = (struct fixuphdr *) buf;
1763 if (fhp->fh_magic != magic) {
1764 kprintf("ntfs_procfixups: magic doesn't match: %08x != %08x\n",
1765 fhp->fh_magic, magic);
1768 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) {
1769 kprintf("ntfs_procfixups: " \
1770 "bad fixups number: %d for %ld bytes block\n",
1771 fhp->fh_fnum, (long)len); /* XXX kprintf kludge */
1774 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) {
1775 kprintf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff);
1778 fxp = (u_int16_t *) (buf + fhp->fh_foff);
1779 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2);
1781 for (i = 1; i < fhp->fh_fnum; i++, fxp++) {
1782 if (*cfxp != fixup) {
1783 kprintf("ntfs_procfixups: fixup %d doesn't match\n", i);
1787 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps);
1794 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len,
1804 kprintf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n",
1805 run, len, (u_long) vcn);
1806 kprintf("ntfs_runtocn: run: ");
1807 for (i = 0; i < len; i++)
1808 kprintf("0x%02x ", run[i]);
1813 kprintf("ntfs_runtocn: run == NULL\n");
1817 if (run[off] == 0) {
1818 kprintf("ntfs_runtocn: vcn too big\n");
1822 error = ntfs_parserun(&ccn, &ccl, run, len, &off);
1824 kprintf("ntfs_runtocn: ntfs_parserun failed\n");
1827 } while (ccl <= vcn);
1834 * this initializes toupper table & dependant variables to be ready for
1838 ntfs_toupper_init(void)
1840 ntfs_toupper_tab = (wchar *) NULL;
1841 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0);
1842 ntfs_toupper_usecount = 0;
1846 * if the ntfs_toupper_tab[] is filled already, just raise use count;
1847 * otherwise read the data from the filesystem we are currently mounting
1850 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp)
1855 /* get exclusive access */
1856 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE);
1858 /* only read the translation data from a file if it hasn't been
1860 if (ntfs_toupper_tab)
1864 * Read in Unicode lowercase -> uppercase translation file.
1865 * XXX for now, just the first 256 entries are used anyway,
1866 * so don't bother reading more
1868 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar),
1869 M_NTFSRDATA, M_WAITOK);
1871 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp)))
1873 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
1874 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL);
1878 ntfs_toupper_usecount++;
1879 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE);
1884 * lower the use count and if it reaches zero, free the memory
1885 * tied by toupper table
1888 ntfs_toupper_unuse(void)
1890 /* get exclusive access */
1891 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE);
1893 ntfs_toupper_usecount--;
1894 if (ntfs_toupper_usecount == 0) {
1895 FREE(ntfs_toupper_tab, M_NTFSRDATA);
1896 ntfs_toupper_tab = NULL;
1899 else if (ntfs_toupper_usecount < 0) {
1900 panic("ntfs_toupper_unuse(): use count negative: %d\n",
1901 ntfs_toupper_usecount);
1905 /* release the lock */
1906 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE);
1910 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w)
1915 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO);
1917 for (i=0; i<256; i++) {
1918 h = (u2w[i] >> 8) & 0xFF;
1921 if (u28[h] == NULL) {
1922 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK);
1923 for (j=0; j<256; j++)
1927 u28[h][l] = i & 0xFF;
1930 ntmp->ntm_u28 = u28;
1936 ntfs_u28_uninit(struct ntfsmount *ntmp)
1941 if (ntmp->ntm_u28 == NULL)
1944 u28 = ntmp->ntm_u28;
1946 for (i=0; i<256; i++)
1948 FREE(u28[i], M_TEMP);
1956 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w)
1961 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK);
1964 for (i=0; i<256; i++)
1967 for (i=0; i<128; i++)
1969 for (i=0; i<128; i++)
1970 _82u[i+128] = u2w[i];
1973 ntmp->ntm_82u = _82u;
1979 ntfs_82u_uninit(struct ntfsmount *ntmp)
1981 FREE(ntmp->ntm_82u, M_TEMP);
1986 * maps the Unicode char to 8bit equivalent
1987 * XXX currently only gets lower 8bit from the Unicode char
1988 * and substitutes a '_' for it if the result would be '\0';
1989 * something better has to be definitely though out
1992 ntfs_u28(struct ntfsmount *ntmp, wchar wc)
1996 p = ntmp->ntm_u28[(wc>>8)&0xFF];
1999 return (p[wc&0xFF]);