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 1.21 2006/04/13 19:25:09 dillon 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 printf("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 printf("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 printf("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 printf("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 printf("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 printf("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 printf("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, NULL);
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, NULL));
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, NULL);
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(&ip->i_interlock);
431 if (ip->i_usecount < 0) {
432 spin_unlock(&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 LOCKMGR(&ip->i_lock, LK_RELEASE|LK_INTERLOCK, &ip->i_interlock);
443 dprintf(("ntfs_ntput: deallocating ntnode: %"PRId64"\n", ip->i_number));
445 if (ip->i_fnlist.lh_first) {
446 spin_unlock(&ip->i_interlock);
447 panic("ntfs_ntput: ntnode has fnodes\n");
451 * XXX this is a bit iffy because we are making high level calls
452 * while holding a spinlock.
456 while ((vap = LIST_FIRST(&ip->i_valist)) != NULL) {
457 LIST_REMOVE(vap,va_list);
458 ntfs_freentvattr(vap);
460 spin_unlock(&ip->i_interlock);
462 FREE(ip, M_NTFSNTNODE);
466 * increment usecount of ntnode
469 ntfs_ntref(struct ntnode *ip)
473 dprintf(("ntfs_ntref: ino %"PRId64", usecount: %d\n",
474 ip->i_number, ip->i_usecount));
479 * Decrement usecount of ntnode.
482 ntfs_ntrele(struct ntnode *ip)
484 dprintf(("ntfs_ntrele: rele ntnode %"PRId64": %p, usecount: %d\n",
485 ip->i_number, ip, ip->i_usecount));
487 spin_lock(&ip->i_interlock);
490 if (ip->i_usecount < 0) {
491 spin_unlock(&ip->i_interlock);
492 panic("ntfs_ntrele: ino: %"PRId64" usecount: %d \n",
493 ip->i_number,ip->i_usecount);
495 spin_unlock(&ip->i_interlock);
499 * Deallocate all memory allocated for ntvattr
502 ntfs_freentvattr(struct ntvattr *vap)
504 if (vap->va_flag & NTFS_AF_INRUN) {
506 FREE(vap->va_vruncn, M_NTFSRUN);
508 FREE(vap->va_vruncl, M_NTFSRUN);
511 FREE(vap->va_datap, M_NTFSRDATA);
513 FREE(vap, M_NTFSNTVATTR);
517 * Convert disk image of attribute into ntvattr structure,
518 * runs are expanded also.
521 ntfs_attrtontvattr(struct ntfsmount *ntmp, struct ntvattr **rvapp,
530 MALLOC(vap, struct ntvattr *, sizeof(struct ntvattr),
531 M_NTFSNTVATTR, M_WAITOK);
532 bzero(vap, sizeof(struct ntvattr));
534 vap->va_flag = rap->a_hdr.a_flag;
535 vap->va_type = rap->a_hdr.a_type;
536 vap->va_compression = rap->a_hdr.a_compression;
537 vap->va_index = rap->a_hdr.a_index;
539 ddprintf(("type: 0x%x, index: %d", vap->va_type, vap->va_index));
541 vap->va_namelen = rap->a_hdr.a_namelen;
542 if (rap->a_hdr.a_namelen) {
543 wchar *unp = (wchar *) ((caddr_t) rap + rap->a_hdr.a_nameoff);
544 ddprintf((", name:["));
545 for (i = 0; i < vap->va_namelen; i++) {
546 vap->va_name[i] = unp[i];
547 ddprintf(("%c", vap->va_name[i]));
551 if (vap->va_flag & NTFS_AF_INRUN) {
552 ddprintf((", nonres."));
553 vap->va_datalen = rap->a_nr.a_datalen;
554 vap->va_allocated = rap->a_nr.a_allocated;
555 vap->va_vcnstart = rap->a_nr.a_vcnstart;
556 vap->va_vcnend = rap->a_nr.a_vcnend;
557 vap->va_compressalg = rap->a_nr.a_compressalg;
558 error = ntfs_runtovrun(&(vap->va_vruncn), &(vap->va_vruncl),
560 (caddr_t) rap + rap->a_nr.a_dataoff);
562 vap->va_compressalg = 0;
563 ddprintf((", res."));
564 vap->va_datalen = rap->a_r.a_datalen;
565 vap->va_allocated = rap->a_r.a_datalen;
566 vap->va_vcnstart = 0;
567 vap->va_vcnend = ntfs_btocn(vap->va_allocated);
568 MALLOC(vap->va_datap, caddr_t, vap->va_datalen,
569 M_NTFSRDATA, M_WAITOK);
570 memcpy(vap->va_datap, (caddr_t) rap + rap->a_r.a_dataoff,
573 ddprintf((", len: %d", vap->va_datalen));
576 FREE(vap, M_NTFSNTVATTR);
586 * Expand run into more utilizable and more memory eating format.
589 ntfs_runtovrun(cn_t **rcnp, cn_t **rclp, u_long *rcntp, u_int8_t *run)
603 off += (run[off] & 0xF) + ((run[off] >> 4) & 0xF) + 1;
606 MALLOC(cn, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
607 MALLOC(cl, cn_t *, cnt * sizeof(cn_t), M_NTFSRUN, M_WAITOK);
617 for (i = 0; i < (sz & 0xF); i++)
618 cl[cnt] += (u_int32_t) run[off++] << (i << 3);
621 if (run[off + sz - 1] & 0x80) {
622 tmp = ((u_int64_t) - 1) << (sz << 3);
623 for (i = 0; i < sz; i++)
624 tmp |= (u_int64_t) run[off++] << (i << 3);
627 for (i = 0; i < sz; i++)
628 tmp |= (u_int64_t) run[off++] << (i << 3);
631 prev = cn[cnt] = prev + tmp;
644 * Compare unicode and ascii string case insens.
647 ntfs_uastricmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen,
648 const char *astr, size_t astrlen)
654 * XXX We use NTFS_82U(NTFS_U28(c)) to get rid of unicode
655 * symbols not covered by translation table
657 for (i = 0; i < ustrlen && i < astrlen; i++) {
658 res = ((int) NTFS_TOUPPER(NTFS_82U(NTFS_U28(ustr[i])))) -
659 ((int)NTFS_TOUPPER(NTFS_82U(astr[i])));
663 return (ustrlen - astrlen);
667 * Compare unicode and ascii string case sens.
670 ntfs_uastrcmp(struct ntfsmount *ntmp, const wchar *ustr, size_t ustrlen,
671 const char *astr, size_t astrlen)
676 for (i = 0; (i < ustrlen) && (i < astrlen); i++) {
677 res = (int) (((char)NTFS_U28(ustr[i])) - astr[i]);
681 return (ustrlen - astrlen);
685 * Search fnode in ntnode, if not found allocate and preinitialize.
687 * ntnode should be locked on entry.
690 ntfs_fget(struct ntfsmount *ntmp, struct ntnode *ip, int attrtype,
691 char *attrname, struct fnode **fpp)
695 dprintf(("ntfs_fget: ino: %"PRId64", attrtype: 0x%x, attrname: %s\n",
696 ip->i_number,attrtype, attrname?attrname:""));
698 for (fp = ip->i_fnlist.lh_first; fp != NULL; fp = fp->f_fnlist.le_next){
699 dprintf(("ntfs_fget: fnode: attrtype: %d, attrname: %s\n",
700 fp->f_attrtype, fp->f_attrname?fp->f_attrname:""));
702 if ((attrtype == fp->f_attrtype) &&
703 ((!attrname && !fp->f_attrname) ||
704 (attrname && fp->f_attrname &&
705 !strcmp(attrname,fp->f_attrname)))){
706 dprintf(("ntfs_fget: found existed: %p\n",fp));
714 MALLOC(fp, struct fnode *, sizeof(struct fnode), M_NTFSFNODE, M_WAITOK);
715 bzero(fp, sizeof(struct fnode));
716 dprintf(("ntfs_fget: allocating fnode: %p\n",fp));
720 fp->f_flag |= FN_AATTRNAME;
721 MALLOC(fp->f_attrname, char *, strlen(attrname)+1, M_TEMP, M_WAITOK);
722 strcpy(fp->f_attrname, attrname);
724 fp->f_attrname = NULL;
725 fp->f_attrtype = attrtype;
729 LIST_INSERT_HEAD(&ip->i_fnlist, fp, f_fnlist);
737 * Deallocate fnode, remove it from ntnode's fnode list.
739 * ntnode should be locked.
742 ntfs_frele(struct fnode *fp)
744 struct ntnode *ip = FTONT(fp);
746 dprintf(("ntfs_frele: fnode: %p for %"PRId64": %p\n", fp, ip->i_number, ip));
748 dprintf(("ntfs_frele: deallocating fnode\n"));
749 LIST_REMOVE(fp,f_fnlist);
750 if (fp->f_flag & FN_AATTRNAME)
751 FREE(fp->f_attrname, M_TEMP);
753 FREE(fp->f_dirblbuf, M_NTFSDIR);
754 FREE(fp, M_NTFSFNODE);
759 * Lookup attribute name in format: [[:$ATTR_TYPE]:$ATTR_NAME],
760 * $ATTR_TYPE is searched in attrdefs read from $AttrDefs.
761 * If $ATTR_TYPE nott specifed, ATTR_A_DATA assumed.
764 ntfs_ntlookupattr(struct ntfsmount *ntmp, const char *name, int namelen,
765 int *attrtype, char **attrname)
769 struct ntvattrdef *adp;
774 if (name[0] == '$') {
776 for (syslen = 0; syslen < namelen; syslen++) {
777 if(sys[syslen] == ':') {
787 for (i = 0; i < ntmp->ntm_adnum; i++, adp++){
788 if (syslen != adp->ad_namelen ||
789 strncmp(sys, adp->ad_name, syslen) != 0)
792 *attrtype = adp->ad_type;
797 *attrtype = NTFS_A_DATA;
801 MALLOC((*attrname), char *, namelen, M_TEMP, M_WAITOK);
802 memcpy((*attrname), name, namelen);
803 (*attrname)[namelen] = '\0';
810 * Lookup specifed node for filename, matching cnp,
811 * return fnode filled.
814 ntfs_ntlookupfile(struct ntfsmount *ntmp, struct vnode *vp,
815 struct componentname *cnp, struct vnode **vpp)
817 struct fnode *fp = VTOF(vp);
818 struct ntnode *ip = FTONT(fp);
819 struct ntvattr *vap; /* Root attribute */
820 cn_t cn; /* VCN in current attribute */
821 caddr_t rdbuf; /* Buffer to read directory's blocks */
823 u_int32_t rdsize; /* Length of data to read from current block */
824 struct attr_indexentry *iep;
825 int error, res, anamelen, fnamelen;
826 const char *fname,*aname;
828 int attrtype = NTFS_A_DATA;
829 char *attrname = NULL;
834 error = ntfs_ntget(ip);
838 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
839 if (error || (vap->va_flag & NTFS_AF_INRUN))
842 blsize = vap->va_a_iroot->ir_size;
843 rdsize = vap->va_datalen;
846 * Divide file name into: foofilefoofilefoofile[:attrspec]
847 * Store like this: fname:fnamelen [aname:anamelen]
849 fname = cnp->cn_nameptr;
852 for (fnamelen = 0; fnamelen < cnp->cn_namelen; fnamelen++)
853 if(fname[fnamelen] == ':') {
854 aname = fname + fnamelen + 1;
855 anamelen = cnp->cn_namelen - fnamelen - 1;
856 dprintf(("ntfs_ntlookupfile: %s (%d), attr: %s (%d)\n",
857 fname, fnamelen, aname, anamelen));
861 dprintf(("ntfs_ntlookupfile: blksz: %d, rdsz: %d\n", blsize, rdsize));
863 MALLOC(rdbuf, caddr_t, blsize, M_TEMP, M_WAITOK);
865 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXROOT, "$I30",
866 0, rdsize, rdbuf, NULL);
870 aoff = sizeof(struct attr_indexroot);
873 iep = (struct attr_indexentry *) (rdbuf + aoff);
875 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
877 iep = (struct attr_indexentry *) (rdbuf + aoff))
879 ddprintf(("scan: %d, %d\n",
880 (u_int32_t) iep->ie_number,
881 (u_int32_t) iep->ie_fnametype));
883 /* check the name - the case-insensitible check
884 * has to come first, to break from this for loop
885 * if needed, so we can dive correctly */
886 res = NTFS_UASTRICMP(iep->ie_fname, iep->ie_fnamelen,
889 if (res < 0) continue;
891 if (iep->ie_fnametype == 0 ||
892 !(ntmp->ntm_flag & NTFS_MFLAG_CASEINS))
894 res = NTFS_UASTRCMP(iep->ie_fname,
895 iep->ie_fnamelen, fname, fnamelen);
896 if (res != 0) continue;
900 error = ntfs_ntlookupattr(ntmp,
902 &attrtype, &attrname);
907 /* Check if we've found ourself */
908 if ((iep->ie_number == ip->i_number) &&
909 (attrtype == fp->f_attrtype) &&
910 ((!attrname && !fp->f_attrname) ||
911 (attrname && fp->f_attrname &&
912 !strcmp(attrname, fp->f_attrname))))
920 /* vget node, but don't load it */
921 error = ntfs_vgetex(ntmp->ntm_mountp,
922 iep->ie_number, attrtype, attrname,
923 LK_EXCLUSIVE, VG_DONTLOADIN | VG_DONTVALIDFN,
926 /* free the buffer returned by ntfs_ntlookupattr() */
928 FREE(attrname, M_TEMP);
937 if (nfp->f_flag & FN_VALID) {
942 nfp->f_fflag = iep->ie_fflag;
943 nfp->f_pnumber = iep->ie_fpnumber;
944 nfp->f_times = iep->ie_ftimes;
946 if((nfp->f_fflag & NTFS_FFLAG_DIR) &&
947 (nfp->f_attrtype == NTFS_A_DATA) &&
948 (nfp->f_attrname == NULL))
953 nvp->v_type = f_type;
955 if ((nfp->f_attrtype == NTFS_A_DATA) &&
956 (nfp->f_attrname == NULL))
958 /* Opening default attribute */
959 nfp->f_size = iep->ie_fsize;
960 nfp->f_allocated = iep->ie_fallocated;
961 nfp->f_flag |= FN_PRELOADED;
963 error = ntfs_filesize(ntmp, nfp,
964 &nfp->f_size, &nfp->f_allocated);
970 nfp->f_flag &= ~FN_VALID;
973 * Normal files use the buffer cache
975 if (nvp->v_type == VREG)
976 vinitvmio(nvp, nfp->f_size);
981 /* Dive if possible */
982 if (iep->ie_flag & NTFS_IEFLAG_SUBNODE) {
983 dprintf(("ntfs_ntlookupfile: diving\n"));
985 cn = *(cn_t *) (rdbuf + aoff +
986 iep->reclen - sizeof(cn_t));
989 error = ntfs_readattr(ntmp, ip, NTFS_A_INDX, "$I30",
990 ntfs_cntob(cn), rdsize, rdbuf, NULL);
994 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
999 aoff = (((struct attr_indexalloc *) rdbuf)->ia_hdrsize +
1002 dprintf(("ntfs_ntlookupfile: nowhere to dive :-(\n"));
1008 dprintf(("finish\n"));
1011 if (attrname) FREE(attrname, M_TEMP);
1012 ntfs_ntvattrrele(vap);
1014 FREE(rdbuf, M_TEMP);
1019 * Check if name type is permitted to show.
1022 ntfs_isnamepermitted(struct ntfsmount *ntmp, struct attr_indexentry *iep)
1024 if (ntmp->ntm_flag & NTFS_MFLAG_ALLNAMES)
1027 switch (iep->ie_fnametype) {
1029 ddprintf(("ntfs_isnamepermitted: skiped DOS name\n"));
1031 case 0: case 1: case 3:
1034 printf("ntfs_isnamepermitted: " \
1035 "WARNING! Unknown file name type: %d\n",
1043 * Read ntfs dir like stream of attr_indexentry, not like btree of them.
1044 * This is done by scaning $BITMAP:$I30 for busy clusters and reading them.
1045 * Ofcouse $INDEX_ROOT:$I30 is read before. Last read values are stored in
1046 * fnode, so we can skip toward record number num almost immediatly.
1047 * Anyway this is rather slow routine. The problem is that we don't know
1048 * how many records are there in $INDEX_ALLOCATION:$I30 block.
1051 ntfs_ntreaddir(struct ntfsmount *ntmp, struct fnode *fp,
1052 u_int32_t num, struct attr_indexentry **riepp)
1054 struct ntnode *ip = FTONT(fp);
1055 struct ntvattr *vap = NULL; /* IndexRoot attribute */
1056 struct ntvattr *bmvap = NULL; /* BitMap attribute */
1057 struct ntvattr *iavap = NULL; /* IndexAllocation attribute */
1058 caddr_t rdbuf; /* Buffer to read directory's blocks */
1059 u_char *bmp = NULL; /* Bitmap */
1060 u_int32_t blsize; /* Index allocation size (2048) */
1061 u_int32_t rdsize; /* Length of data to read */
1062 u_int32_t attrnum; /* Current attribute type */
1063 u_int32_t cpbl = 1; /* Clusters per directory block */
1065 struct attr_indexentry *iep;
1067 u_int32_t aoff, cnum;
1069 dprintf(("ntfs_ntreaddir: read ino: %"PRId64", num: %d\n", ip->i_number, num));
1070 error = ntfs_ntget(ip);
1074 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXROOT, "$I30", 0, &vap);
1078 if (fp->f_dirblbuf == NULL) {
1079 fp->f_dirblsz = vap->va_a_iroot->ir_size;
1080 MALLOC(fp->f_dirblbuf, caddr_t,
1081 max(vap->va_datalen,fp->f_dirblsz), M_NTFSDIR, M_WAITOK);
1084 blsize = fp->f_dirblsz;
1085 rdbuf = fp->f_dirblbuf;
1087 dprintf(("ntfs_ntreaddir: rdbuf: 0x%p, blsize: %d\n", rdbuf, blsize));
1089 if (vap->va_a_iroot->ir_flag & NTFS_IRFLAG_INDXALLOC) {
1090 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDXBITMAP, "$I30",
1096 MALLOC(bmp, u_char *, bmvap->va_datalen, M_TEMP, M_WAITOK);
1097 error = ntfs_readattr(ntmp, ip, NTFS_A_INDXBITMAP, "$I30", 0,
1098 bmvap->va_datalen, bmp, NULL);
1102 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_INDX, "$I30",
1108 cpbl = ntfs_btocn(blsize + ntfs_cntob(1) - 1);
1109 dprintf(("ntfs_ntreaddir: indexalloc: %d, cpbl: %d\n",
1110 iavap->va_datalen, cpbl));
1112 dprintf(("ntfs_ntreadidir: w/o BitMap and IndexAllocation\n"));
1113 iavap = bmvap = NULL;
1117 /* Try use previous values */
1118 if ((fp->f_lastdnum < num) && (fp->f_lastdnum != 0)) {
1119 attrnum = fp->f_lastdattr;
1120 aoff = fp->f_lastdoff;
1121 blnum = fp->f_lastdblnum;
1122 cnum = fp->f_lastdnum;
1124 attrnum = NTFS_A_INDXROOT;
1125 aoff = sizeof(struct attr_indexroot);
1131 dprintf(("ntfs_ntreaddir: scan: 0x%x, %d, %d, %d, %d\n",
1132 attrnum, (u_int32_t) blnum, cnum, num, aoff));
1133 rdsize = (attrnum == NTFS_A_INDXROOT) ? vap->va_datalen : blsize;
1134 error = ntfs_readattr(ntmp, ip, attrnum, "$I30",
1135 ntfs_cntob(blnum * cpbl), rdsize, rdbuf, NULL);
1139 if (attrnum == NTFS_A_INDX) {
1140 error = ntfs_procfixups(ntmp, NTFS_INDXMAGIC,
1146 aoff = (attrnum == NTFS_A_INDX) ?
1147 (0x18 + ((struct attr_indexalloc *) rdbuf)->ia_hdrsize) :
1148 sizeof(struct attr_indexroot);
1150 iep = (struct attr_indexentry *) (rdbuf + aoff);
1151 for (; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (rdsize > aoff);
1152 aoff += iep->reclen,
1153 iep = (struct attr_indexentry *) (rdbuf + aoff))
1155 if (!ntfs_isnamepermitted(ntmp, iep)) continue;
1158 fp->f_lastdnum = cnum;
1159 fp->f_lastdoff = aoff;
1160 fp->f_lastdblnum = blnum;
1161 fp->f_lastdattr = attrnum;
1172 if (attrnum == NTFS_A_INDXROOT)
1177 while (ntfs_cntob(blnum * cpbl) < iavap->va_datalen) {
1178 if (bmp[blnum >> 3] & (1 << (blnum & 3)))
1183 attrnum = NTFS_A_INDX;
1185 if (ntfs_cntob(blnum * cpbl) >= iavap->va_datalen)
1187 dprintf(("ntfs_ntreaddir: blnum: %d\n", (u_int32_t) blnum));
1196 ntfs_ntvattrrele(vap);
1198 ntfs_ntvattrrele(bmvap);
1200 ntfs_ntvattrrele(iavap);
1208 * Convert NTFS times that are in 100 ns units and begins from
1209 * 1601 Jan 1 into unix times.
1212 ntfs_nttimetounix(u_int64_t nt)
1216 /* WindowNT times are in 100 ns and from 1601 Jan 1 */
1217 t.tv_nsec = (nt % (1000 * 1000 * 10)) * 100;
1218 t.tv_sec = nt / (1000 * 1000 * 10) -
1219 369LL * 365LL * 24LL * 60LL * 60LL -
1220 89LL * 1LL * 24LL * 60LL * 60LL;
1225 * Get file times from NTFS_A_NAME attribute.
1228 ntfs_times(struct ntfsmount *ntmp, struct ntnode *ip, ntfs_times_t *tm)
1230 struct ntvattr *vap;
1233 dprintf(("ntfs_times: ino: %"PRId64"...\n", ip->i_number));
1235 error = ntfs_ntget(ip);
1239 error = ntfs_ntvattrget(ntmp, ip, NTFS_A_NAME, NULL, 0, &vap);
1244 *tm = vap->va_a_name->n_times;
1245 ntfs_ntvattrrele(vap);
1252 * Get file sizes from corresponding attribute.
1254 * ntnode under fnode should be locked.
1257 ntfs_filesize(struct ntfsmount *ntmp, struct fnode *fp, u_int64_t *size,
1260 struct ntvattr *vap;
1261 struct ntnode *ip = FTONT(fp);
1265 dprintf(("ntfs_filesize: ino: %"PRId64"\n", ip->i_number));
1267 error = ntfs_ntvattrget(ntmp, ip,
1268 fp->f_attrtype, fp->f_attrname, 0, &vap);
1272 bn = vap->va_allocated;
1273 sz = vap->va_datalen;
1275 dprintf(("ntfs_filesize: %d bytes (%d bytes allocated)\n",
1276 (u_int32_t) sz, (u_int32_t) bn));
1283 ntfs_ntvattrrele(vap);
1289 * This is one of write routine.
1292 ntfs_writeattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1293 u_int32_t attrnum, char *attrname, off_t roff,
1294 size_t rsize, void *rdata, size_t *initp,
1299 off_t off = roff, left = rsize, towrite;
1300 caddr_t data = rdata;
1301 struct ntvattr *vap;
1305 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
1306 ntfs_btocn(off), &vap);
1309 towrite = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
1310 ddprintf(("ntfs_writeattr_plain: o: %d, s: %d (%d - %d)\n",
1311 (u_int32_t) off, (u_int32_t) towrite,
1312 (u_int32_t) vap->va_vcnstart,
1313 (u_int32_t) vap->va_vcnend));
1314 error = ntfs_writentvattr_plain(ntmp, ip, vap,
1315 off - ntfs_cntob(vap->va_vcnstart),
1316 towrite, data, &init, uio);
1318 printf("ntfs_writeattr_plain: " \
1319 "ntfs_writentvattr_plain failed: o: %d, s: %d\n",
1320 (u_int32_t) off, (u_int32_t) towrite);
1321 printf("ntfs_writeattr_plain: attrib: %d - %d\n",
1322 (u_int32_t) vap->va_vcnstart,
1323 (u_int32_t) vap->va_vcnend);
1324 ntfs_ntvattrrele(vap);
1327 ntfs_ntvattrrele(vap);
1330 data = data + towrite;
1338 * This is one of write routine.
1340 * ntnode should be locked.
1343 ntfs_writentvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1344 struct ntvattr *vap, off_t roff, size_t rsize,
1345 void *rdata, size_t *initp, struct uio *uio)
1350 cn_t ccn, ccl, cn, left, cl;
1351 caddr_t data = rdata;
1357 if ((vap->va_flag & NTFS_AF_INRUN) == 0) {
1358 printf("ntfs_writevattr_plain: CAN'T WRITE RES. ATTRIBUTE\n");
1362 ddprintf(("ntfs_writentvattr_plain: data in run: %ld chains\n",
1370 for (; left && (cnt < vap->va_vruncnt); cnt++) {
1371 ccn = vap->va_vruncn[cnt];
1372 ccl = vap->va_vruncl[cnt];
1374 ddprintf(("ntfs_writentvattr_plain: " \
1375 "left %d, cn: 0x%x, cl: %d, off: %d\n", \
1376 (u_int32_t) left, (u_int32_t) ccn, \
1377 (u_int32_t) ccl, (u_int32_t) off));
1379 if (ntfs_cntob(ccl) < off) {
1380 off -= ntfs_cntob(ccl);
1384 if (!ccn && ip->i_number != NTFS_BOOTINO)
1387 ccl -= ntfs_btocn(off);
1388 cn = ccn + ntfs_btocn(off);
1389 off = ntfs_btocnoff(off);
1391 while (left && ccl) {
1392 #if defined(__DragonFly__)
1394 min(ntfs_cntob(ccl) - off, MAXBSIZE - off));
1396 /* under NetBSD, bread() can read
1397 * maximum one block worth of data */
1398 tocopy = min(left, ntmp->ntm_bps - off);
1400 cl = ntfs_btocl(tocopy + off);
1401 ddprintf(("ntfs_writentvattr_plain: write: " \
1402 "cn: 0x%x cl: %d, off: %d len: %d, left: %d\n",
1403 (u_int32_t) cn, (u_int32_t) cl,
1404 (u_int32_t) off, (u_int32_t) tocopy,
1406 if ((off == 0) && (tocopy == ntfs_cntob(cl)))
1408 bp = getblk(ntmp->ntm_devvp, ntfs_cntodoff(cn),
1409 ntfs_cntob(cl), 0, 0);
1412 error = bread(ntmp->ntm_devvp,
1414 ntfs_cntob(cl), &bp);
1421 uiomove(bp->b_data + off, tocopy, uio);
1423 memcpy(bp->b_data + off, data, tocopy);
1425 data = data + tocopy;
1435 printf("ntfs_writentvattr_plain: POSSIBLE RUN ERROR\n");
1443 * This is one of read routines.
1445 * ntnode should be locked.
1448 ntfs_readntvattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1449 struct ntvattr *vap, off_t roff, size_t rsize,
1450 void *rdata, size_t *initp, struct uio *uio)
1456 if (vap->va_flag & NTFS_AF_INRUN) {
1458 cn_t ccn, ccl, cn, left, cl;
1459 caddr_t data = rdata;
1463 ddprintf(("ntfs_readntvattr_plain: data in run: %ld chains\n",
1471 while (left && (cnt < vap->va_vruncnt)) {
1472 ccn = vap->va_vruncn[cnt];
1473 ccl = vap->va_vruncl[cnt];
1475 ddprintf(("ntfs_readntvattr_plain: " \
1476 "left %d, cn: 0x%x, cl: %d, off: %d\n", \
1477 (u_int32_t) left, (u_int32_t) ccn, \
1478 (u_int32_t) ccl, (u_int32_t) off));
1480 if (ntfs_cntob(ccl) < off) {
1481 off -= ntfs_cntob(ccl);
1485 if (ccn || ip->i_number == NTFS_BOOTINO) {
1486 ccl -= ntfs_btocn(off);
1487 cn = ccn + ntfs_btocn(off);
1488 off = ntfs_btocnoff(off);
1490 while (left && ccl) {
1491 #if defined(__DragonFly__)
1493 min(ntfs_cntob(ccl) - off,
1496 /* under NetBSD, bread() can read
1497 * maximum one block worth of data */
1499 ntmp->ntm_bps - off);
1501 cl = ntfs_btocl(tocopy + off);
1502 ddprintf(("ntfs_readntvattr_plain: " \
1503 "read: cn: 0x%x cl: %d, " \
1504 "off: %d len: %d, left: %d\n",
1510 error = bread(ntmp->ntm_devvp,
1519 uiomove(bp->b_data + off,
1522 memcpy(data, bp->b_data + off,
1526 data = data + tocopy;
1534 tocopy = min(left, ntfs_cntob(ccl) - off);
1535 ddprintf(("ntfs_readntvattr_plain: "
1536 "hole: ccn: 0x%x ccl: %d, off: %d, " \
1537 " len: %d, left: %d\n",
1538 (u_int32_t) ccn, (u_int32_t) ccl,
1539 (u_int32_t) off, (u_int32_t) tocopy,
1544 size_t remains = tocopy;
1545 for(; remains; remains++)
1546 uiomove("", 1, uio);
1548 bzero(data, tocopy);
1549 data = data + tocopy;
1554 printf("ntfs_readntvattr_plain: POSSIBLE RUN ERROR\n");
1558 ddprintf(("ntfs_readnvattr_plain: data is in mft record\n"));
1560 uiomove(vap->va_datap + roff, rsize, uio);
1562 memcpy(rdata, vap->va_datap + roff, rsize);
1570 * This is one of read routines.
1573 ntfs_readattr_plain(struct ntfsmount *ntmp, struct ntnode *ip,
1574 u_int32_t attrnum, char *attrname, off_t roff,
1575 size_t rsize, void *rdata, size_t * initp,
1580 off_t off = roff, left = rsize, toread;
1581 caddr_t data = rdata;
1582 struct ntvattr *vap;
1586 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname,
1587 ntfs_btocn(off), &vap);
1590 toread = min(left, ntfs_cntob(vap->va_vcnend + 1) - off);
1591 ddprintf(("ntfs_readattr_plain: o: %d, s: %d (%d - %d)\n",
1592 (u_int32_t) off, (u_int32_t) toread,
1593 (u_int32_t) vap->va_vcnstart,
1594 (u_int32_t) vap->va_vcnend));
1595 error = ntfs_readntvattr_plain(ntmp, ip, vap,
1596 off - ntfs_cntob(vap->va_vcnstart),
1597 toread, data, &init, uio);
1599 printf("ntfs_readattr_plain: " \
1600 "ntfs_readntvattr_plain failed: o: %d, s: %d\n",
1601 (u_int32_t) off, (u_int32_t) toread);
1602 printf("ntfs_readattr_plain: attrib: %d - %d\n",
1603 (u_int32_t) vap->va_vcnstart,
1604 (u_int32_t) vap->va_vcnend);
1605 ntfs_ntvattrrele(vap);
1608 ntfs_ntvattrrele(vap);
1611 data = data + toread;
1619 * This is one of read routines.
1622 ntfs_readattr(struct ntfsmount *ntmp, struct ntnode *ip, u_int32_t attrnum,
1623 char *attrname, off_t roff, size_t rsize, void *rdata,
1627 struct ntvattr *vap;
1630 ddprintf(("ntfs_readattr: reading %"PRId64": 0x%x, from %d size %d bytes\n",
1631 ip->i_number, attrnum, (u_int32_t) roff, (u_int32_t) rsize));
1633 error = ntfs_ntvattrget(ntmp, ip, attrnum, attrname, 0, &vap);
1637 if ((roff > vap->va_datalen) ||
1638 (roff + rsize > vap->va_datalen)) {
1639 ddprintf(("ntfs_readattr: offset too big\n"));
1640 ntfs_ntvattrrele(vap);
1643 if (vap->va_compression && vap->va_compressalg) {
1646 off_t off = roff, left = rsize, tocopy;
1647 caddr_t data = rdata;
1650 ddprintf(("ntfs_ntreadattr: compression: %d\n",
1651 vap->va_compressalg));
1653 MALLOC(cup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL),
1654 M_NTFSDECOMP, M_WAITOK);
1655 MALLOC(uup, u_int8_t *, ntfs_cntob(NTFS_COMPUNIT_CL),
1656 M_NTFSDECOMP, M_WAITOK);
1658 cn = (ntfs_btocn(roff)) & (~(NTFS_COMPUNIT_CL - 1));
1659 off = roff - ntfs_cntob(cn);
1662 error = ntfs_readattr_plain(ntmp, ip, attrnum,
1663 attrname, ntfs_cntob(cn),
1664 ntfs_cntob(NTFS_COMPUNIT_CL),
1669 tocopy = min(left, ntfs_cntob(NTFS_COMPUNIT_CL) - off);
1671 if (init == ntfs_cntob(NTFS_COMPUNIT_CL)) {
1673 uiomove(cup + off, tocopy, uio);
1675 memcpy(data, cup + off, tocopy);
1676 } else if (init == 0) {
1678 size_t remains = tocopy;
1679 for(; remains; remains--)
1680 uiomove("", 1, uio);
1683 bzero(data, tocopy);
1685 error = ntfs_uncompunit(ntmp, uup, cup);
1689 uiomove(uup + off, tocopy, uio);
1691 memcpy(data, uup + off, tocopy);
1695 data = data + tocopy;
1696 off += tocopy - ntfs_cntob(NTFS_COMPUNIT_CL);
1697 cn += NTFS_COMPUNIT_CL;
1700 FREE(uup, M_NTFSDECOMP);
1701 FREE(cup, M_NTFSDECOMP);
1703 error = ntfs_readattr_plain(ntmp, ip, attrnum, attrname,
1704 roff, rsize, rdata, &init, uio);
1705 ntfs_ntvattrrele(vap);
1711 ntfs_parserun(cn_t *cn, cn_t *cl, u_int8_t *run, u_long len, u_long *off)
1717 printf("ntfs_parsetun: run == NULL\n");
1722 printf("ntfs_parserun: trying to go out of run\n");
1726 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
1727 printf("ntfs_parserun: " \
1728 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
1732 for (i = 0; i < (sz & 0xF); i++)
1733 *cl += (u_int32_t) run[(*off)++] << (i << 3);
1736 if ((sz & 0xF) > 8 || (*off) + (sz & 0xF) > len) {
1737 printf("ntfs_parserun: " \
1738 "bad run: length too big: sz: 0x%02x (%ld < %ld + sz)\n",
1742 for (i = 0; i < (sz & 0xF); i++)
1743 *cn += (u_int32_t) run[(*off)++] << (i << 3);
1750 * Process fixup routine on given buffer.
1753 ntfs_procfixups(struct ntfsmount *ntmp, u_int32_t magic, caddr_t buf,
1756 struct fixuphdr *fhp = (struct fixuphdr *) buf;
1762 if (fhp->fh_magic != magic) {
1763 printf("ntfs_procfixups: magic doesn't match: %08x != %08x\n",
1764 fhp->fh_magic, magic);
1767 if ((fhp->fh_fnum - 1) * ntmp->ntm_bps != len) {
1768 printf("ntfs_procfixups: " \
1769 "bad fixups number: %d for %ld bytes block\n",
1770 fhp->fh_fnum, (long)len); /* XXX printf kludge */
1773 if (fhp->fh_foff >= ntmp->ntm_spc * ntmp->ntm_mftrecsz * ntmp->ntm_bps) {
1774 printf("ntfs_procfixups: invalid offset: %x", fhp->fh_foff);
1777 fxp = (u_int16_t *) (buf + fhp->fh_foff);
1778 cfxp = (u_int16_t *) (buf + ntmp->ntm_bps - 2);
1780 for (i = 1; i < fhp->fh_fnum; i++, fxp++) {
1781 if (*cfxp != fixup) {
1782 printf("ntfs_procfixups: fixup %d doesn't match\n", i);
1786 cfxp = (u_int16_t *)(((caddr_t) cfxp) + ntmp->ntm_bps);
1793 ntfs_runtocn(cn_t *cn, struct ntfsmount *ntmp, u_int8_t *run, u_long len,
1803 printf("ntfs_runtocn: run: 0x%p, %ld bytes, vcn:%ld\n",
1804 run, len, (u_long) vcn);
1805 printf("ntfs_runtocn: run: ");
1806 for (i = 0; i < len; i++)
1807 printf("0x%02x ", run[i]);
1812 printf("ntfs_runtocn: run == NULL\n");
1816 if (run[off] == 0) {
1817 printf("ntfs_runtocn: vcn too big\n");
1821 error = ntfs_parserun(&ccn, &ccl, run, len, &off);
1823 printf("ntfs_runtocn: ntfs_parserun failed\n");
1826 } while (ccl <= vcn);
1833 * this initializes toupper table & dependant variables to be ready for
1837 ntfs_toupper_init(void)
1839 ntfs_toupper_tab = (wchar *) NULL;
1840 lockinit(&ntfs_toupper_lock, "ntfs_toupper", 0, 0);
1841 ntfs_toupper_usecount = 0;
1845 * if the ntfs_toupper_tab[] is filled already, just raise use count;
1846 * otherwise read the data from the filesystem we are currently mounting
1849 ntfs_toupper_use(struct mount *mp, struct ntfsmount *ntmp)
1854 /* get exclusive access */
1855 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL);
1857 /* only read the translation data from a file if it hasn't been
1859 if (ntfs_toupper_tab)
1863 * Read in Unicode lowercase -> uppercase translation file.
1864 * XXX for now, just the first 256 entries are used anyway,
1865 * so don't bother reading more
1867 MALLOC(ntfs_toupper_tab, wchar *, 65536 * sizeof(wchar),
1868 M_NTFSRDATA, M_WAITOK);
1870 if ((error = VFS_VGET(mp, NTFS_UPCASEINO, &vp)))
1872 error = ntfs_readattr(ntmp, VTONT(vp), NTFS_A_DATA, NULL,
1873 0, 65536*sizeof(wchar), (char *) ntfs_toupper_tab, NULL);
1877 ntfs_toupper_usecount++;
1878 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL);
1883 * lower the use count and if it reaches zero, free the memory
1884 * tied by toupper table
1887 ntfs_toupper_unuse(void)
1889 /* get exclusive access */
1890 LOCKMGR(&ntfs_toupper_lock, LK_EXCLUSIVE, NULL);
1892 ntfs_toupper_usecount--;
1893 if (ntfs_toupper_usecount == 0) {
1894 FREE(ntfs_toupper_tab, M_NTFSRDATA);
1895 ntfs_toupper_tab = NULL;
1898 else if (ntfs_toupper_usecount < 0) {
1899 panic("ntfs_toupper_unuse(): use count negative: %d\n",
1900 ntfs_toupper_usecount);
1904 /* release the lock */
1905 LOCKMGR(&ntfs_toupper_lock, LK_RELEASE, NULL);
1909 ntfs_u28_init(struct ntfsmount *ntmp, wchar *u2w)
1914 MALLOC(u28, char **, 256 * sizeof(char*), M_TEMP, M_WAITOK | M_ZERO);
1916 for (i=0; i<256; i++) {
1917 h = (u2w[i] >> 8) & 0xFF;
1920 if (u28[h] == NULL) {
1921 MALLOC(u28[h], char *, 256 * sizeof(char), M_TEMP, M_WAITOK);
1922 for (j=0; j<256; j++)
1926 u28[h][l] = i & 0xFF;
1929 ntmp->ntm_u28 = u28;
1935 ntfs_u28_uninit(struct ntfsmount *ntmp)
1940 if (ntmp->ntm_u28 == NULL)
1943 u28 = ntmp->ntm_u28;
1945 for (i=0; i<256; i++)
1947 FREE(u28[i], M_TEMP);
1955 ntfs_82u_init(struct ntfsmount *ntmp, u_int16_t *u2w)
1960 MALLOC(_82u, wchar *, 256 * sizeof(wchar), M_TEMP, M_WAITOK);
1963 for (i=0; i<256; i++)
1966 for (i=0; i<128; i++)
1968 for (i=0; i<128; i++)
1969 _82u[i+128] = u2w[i];
1972 ntmp->ntm_82u = _82u;
1978 ntfs_82u_uninit(struct ntfsmount *ntmp)
1980 FREE(ntmp->ntm_82u, M_TEMP);
1985 * maps the Unicode char to 8bit equivalent
1986 * XXX currently only gets lower 8bit from the Unicode char
1987 * and substitutes a '_' for it if the result would be '\0';
1988 * something better has to be definitely though out
1991 ntfs_u28(struct ntfsmount *ntmp, wchar wc)
1995 p = ntmp->ntm_u28[(wc>>8)&0xFF];
1998 return (p[wc&0xFF]);