2 * Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 /* Take care of the vnode side of things */
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/namei.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
41 #include <sys/iconv.h>
42 #include <sys/mount.h>
43 #include <sys/vnode.h>
44 #include <sys/dirent.h>
45 #include <sys/queue.h>
46 #include <sys/unistd.h>
47 #include <sys/endian.h>
51 #include <fs/udf/ecma167-udf.h>
52 #include <fs/udf/osta.h>
53 #include <fs/udf/udf.h>
54 #include <fs/udf/udf_mount.h>
56 extern struct iconv_functions *udf_iconv;
58 static vop_access_t udf_access;
59 static vop_getattr_t udf_getattr;
60 static vop_open_t udf_open;
61 static vop_ioctl_t udf_ioctl;
62 static vop_pathconf_t udf_pathconf;
63 static vop_print_t udf_print;
64 static vop_read_t udf_read;
65 static vop_readdir_t udf_readdir;
66 static vop_readlink_t udf_readlink;
67 static vop_setattr_t udf_setattr;
68 static vop_strategy_t udf_strategy;
69 static vop_bmap_t udf_bmap;
70 static vop_cachedlookup_t udf_lookup;
71 static vop_reclaim_t udf_reclaim;
72 static vop_vptofh_t udf_vptofh;
73 static int udf_readatoffset(struct udf_node *node, int *size, off_t offset,
74 struct buf **bp, uint8_t **data);
75 static int udf_bmap_internal(struct udf_node *node, off_t offset,
76 daddr_t *sector, uint32_t *max_size);
78 static struct vop_vector udf_vnodeops = {
79 .vop_default = &default_vnodeops,
81 .vop_access = udf_access,
83 .vop_cachedlookup = udf_lookup,
84 .vop_getattr = udf_getattr,
85 .vop_ioctl = udf_ioctl,
86 .vop_lookup = vfs_cache_lookup,
88 .vop_pathconf = udf_pathconf,
89 .vop_print = udf_print,
91 .vop_readdir = udf_readdir,
92 .vop_readlink = udf_readlink,
93 .vop_reclaim = udf_reclaim,
94 .vop_setattr = udf_setattr,
95 .vop_strategy = udf_strategy,
96 .vop_vptofh = udf_vptofh,
99 struct vop_vector udf_fifoops = {
100 .vop_default = &fifo_specops,
101 .vop_access = udf_access,
102 .vop_getattr = udf_getattr,
103 .vop_print = udf_print,
104 .vop_reclaim = udf_reclaim,
105 .vop_setattr = udf_setattr,
106 .vop_vptofh = udf_vptofh,
109 static MALLOC_DEFINE(M_UDFFID, "udf_fid", "UDF FileId structure");
110 static MALLOC_DEFINE(M_UDFDS, "udf_ds", "UDF Dirstream structure");
112 #define UDF_INVALID_BMAP -1
115 udf_allocv(struct mount *mp, struct vnode **vpp, struct thread *td)
120 error = getnewvnode("udf", mp, &udf_vnodeops, &vp);
122 printf("udf_allocv: failed to allocate new vnode\n");
130 /* Convert file entry permission (5 bits per owner/group/user) to a mode_t */
132 udf_permtomode(struct udf_node *node)
138 perm = le32toh(node->fentry->perm);
139 flags = le16toh(node->fentry->icbtag.flags);
141 mode = perm & UDF_FENTRY_PERM_USER_MASK;
142 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK) >> 2);
143 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4);
144 mode |= ((flags & UDF_ICB_TAG_FLAGS_STICKY) << 4);
145 mode |= ((flags & UDF_ICB_TAG_FLAGS_SETGID) << 6);
146 mode |= ((flags & UDF_ICB_TAG_FLAGS_SETUID) << 8);
152 udf_access(struct vop_access_args *a)
155 struct udf_node *node;
161 accmode = a->a_accmode;
163 if (accmode & VWRITE) {
164 switch (vp->v_type) {
175 mode = udf_permtomode(node);
177 return (vaccess(vp->v_type, mode, node->fentry->uid, node->fentry->gid,
178 accmode, a->a_cred, NULL));
182 udf_open(struct vop_open_args *ap) {
183 struct udf_node *np = VTON(ap->a_vp);
186 fsize = le64toh(np->fentry->inf_len);
187 vnode_create_vobject(ap->a_vp, fsize, ap->a_td);
191 static const int mon_lens[2][12] = {
192 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334},
193 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335}
197 udf_isaleapyear(int year)
201 i = (year % 4) ? 0 : 1;
202 i &= (year % 100) ? 1 : 0;
203 i |= (year % 400) ? 0 : 1;
209 * Timezone calculation compliments of Julian Elischer <julian@elischer.org>.
212 udf_timetotimespec(struct timestamp *time, struct timespec *t)
214 int i, lpyear, daysinyear, year, startyear;
216 uint16_t u_tz_offset;
221 * DirectCD seems to like using bogus year values.
222 * Don't trust time->month as it will be used for an array index.
224 year = le16toh(time->year);
225 if (year < 1970 || time->month < 1 || time->month > 12) {
231 /* Calculate the time and day */
232 t->tv_sec = time->second;
233 t->tv_sec += time->minute * 60;
234 t->tv_sec += time->hour * 3600;
235 t->tv_sec += (time->day - 1) * 3600 * 24;
237 /* Calculate the month */
238 lpyear = udf_isaleapyear(year);
239 t->tv_sec += mon_lens[lpyear][time->month - 1] * 3600 * 24;
241 /* Speed up the calculation */
244 t->tv_sec += 1262304000;
246 } else if (year > 1999) {
247 t->tv_sec += 946684800;
249 } else if (year > 1989) {
250 t->tv_sec += 631152000;
252 } else if (year > 1979) {
253 t->tv_sec += 315532800;
257 daysinyear = (year - startyear) * 365;
258 for (i = startyear; i < year; i++)
259 daysinyear += udf_isaleapyear(i);
260 t->tv_sec += daysinyear * 3600 * 24;
262 /* Calculate microseconds */
263 t->tv_nsec = time->centisec * 10000 + time->hund_usec * 100 +
267 * Calculate the time zone. The timezone is 12 bit signed 2's
268 * complement, so we gotta do some extra magic to handle it right.
270 tz.u_tz_offset = le16toh(time->type_tz);
271 tz.u_tz_offset &= 0x0fff;
272 if (tz.u_tz_offset & 0x0800)
273 tz.u_tz_offset |= 0xf000; /* extend the sign to 16 bits */
274 if ((le16toh(time->type_tz) & 0x1000) && (tz.s_tz_offset != -2047))
275 t->tv_sec -= tz.s_tz_offset * 60;
281 udf_getattr(struct vop_getattr_args *a)
284 struct udf_node *node;
286 struct file_entry *fentry;
294 fentry = node->fentry;
296 vap->va_fsid = dev2udev(node->udfmp->im_dev);
297 vap->va_fileid = node->hash_id;
298 vap->va_mode = udf_permtomode(node);
299 vap->va_nlink = le16toh(fentry->link_cnt);
301 * XXX The spec says that -1 is valid for uid/gid and indicates an
302 * invalid uid/gid. How should this be represented?
304 vap->va_uid = (le32toh(fentry->uid) == -1) ? 0 : le32toh(fentry->uid);
305 vap->va_gid = (le32toh(fentry->gid) == -1) ? 0 : le32toh(fentry->gid);
306 udf_timetotimespec(&fentry->atime, &vap->va_atime);
307 udf_timetotimespec(&fentry->mtime, &vap->va_mtime);
308 vap->va_ctime = vap->va_mtime; /* XXX Stored as an Extended Attribute */
309 vap->va_rdev = NODEV;
310 if (vp->v_type & VDIR) {
312 * Directories that are recorded within their ICB will show
313 * as having 0 blocks recorded. Since tradition dictates
314 * that directories consume at least one logical block,
317 if (fentry->logblks_rec != 0) {
319 le64toh(fentry->logblks_rec) * node->udfmp->bsize;
321 vap->va_size = node->udfmp->bsize;
324 vap->va_size = le64toh(fentry->inf_len);
328 vap->va_blocksize = node->udfmp->bsize;
329 vap->va_bytes = le64toh(fentry->inf_len);
330 vap->va_type = vp->v_type;
331 vap->va_filerev = 0; /* XXX */
336 udf_setattr(struct vop_setattr_args *a)
343 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
344 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
345 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL)
347 if (vap->va_size != (u_quad_t)VNOVAL) {
348 switch (vp->v_type) {
368 * File specific ioctls.
371 udf_ioctl(struct vop_ioctl_args *a)
373 printf("%s called\n", __func__);
378 * I'm not sure that this has much value in a read-only filesystem, but
382 udf_pathconf(struct vop_pathconf_args *a)
387 *a->a_retval = 65535;
390 *a->a_retval = NAME_MAX;
393 *a->a_retval = PATH_MAX;
404 udf_print(struct vop_print_args *ap)
406 struct vnode *vp = ap->a_vp;
407 struct udf_node *node = VTON(vp);
409 printf(" ino %lu, on dev %s", (u_long)node->hash_id,
410 devtoname(node->udfmp->im_dev));
411 if (vp->v_type == VFIFO)
417 #define lblkno(udfmp, loc) ((loc) >> (udfmp)->bshift)
418 #define blkoff(udfmp, loc) ((loc) & (udfmp)->bmask)
419 #define lblktosize(udfmp, blk) ((blk) << (udfmp)->bshift)
422 is_data_in_fentry(const struct udf_node *node)
424 const struct file_entry *fentry = node->fentry;
426 return ((le16toh(fentry->icbtag.flags) & 0x7) == 3);
430 udf_read(struct vop_read_args *ap)
432 struct vnode *vp = ap->a_vp;
433 struct uio *uio = ap->a_uio;
434 struct udf_node *node = VTON(vp);
435 struct udf_mnt *udfmp;
436 struct file_entry *fentry;
439 daddr_t lbn, rablock;
445 if (uio->uio_resid == 0)
447 if (uio->uio_offset < 0)
450 if (is_data_in_fentry(node)) {
451 fentry = node->fentry;
452 data = &fentry->data[le32toh(fentry->l_ea)];
453 fsize = le32toh(fentry->l_ad);
456 diff = fsize - uio->uio_offset;
461 error = uiomove(data + uio->uio_offset, (int)n, uio);
465 fsize = le64toh(node->fentry->inf_len);
468 lbn = lblkno(udfmp, uio->uio_offset);
469 on = blkoff(udfmp, uio->uio_offset);
470 n = min((u_int)(udfmp->bsize - on),
472 diff = fsize - uio->uio_offset;
479 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
480 if (lblktosize(udfmp, rablock) < fsize) {
481 error = cluster_read(vp, fsize, lbn, size,
482 NOCRED, uio->uio_resid,
483 (ap->a_ioflag >> 16), 0, &bp);
485 error = bread(vp, lbn, size, NOCRED, &bp);
488 error = bread(vp, lbn, size, NOCRED, &bp);
490 n = min(n, size - bp->b_resid);
496 error = uiomove(bp->b_data + on, (int)n, uio);
498 } while (error == 0 && uio->uio_resid > 0 && n != 0);
503 * Call the OSTA routines to translate the name from a CS0 dstring to a
504 * 16-bit Unicode String. Hooks need to be placed in here to translate from
505 * Unicode to the encoding that the kernel/user expects. Return the length
506 * of the translated string.
509 udf_transname(char *cs0string, char *destname, int len, struct udf_mnt *udfmp)
511 unicode_t *transname;
515 size_t destleft = MAXNAMLEN;
517 /* Convert 16-bit Unicode to destname */
518 if (udfmp->im_flags & UDFMNT_KICONV && udf_iconv) {
519 /* allocate a buffer big enough to hold an 8->16 bit expansion */
520 unibuf = uma_zalloc(udf_zone_trans, M_WAITOK);
522 if ((unilen = (ssize_t)udf_UncompressUnicodeByte(len, cs0string, unibuf)) == -1) {
523 printf("udf: Unicode translation failed\n");
524 uma_zfree(udf_zone_trans, unibuf);
528 while (unilen > 0 && destleft > 0) {
529 udf_iconv->conv(udfmp->im_d2l, (const char **)&unibuf,
530 (size_t *)&unilen, (char **)&destname, &destleft);
531 /* Unconverted character found */
532 if (unilen > 0 && destleft > 0) {
539 uma_zfree(udf_zone_trans, unip);
541 destlen = MAXNAMLEN - (int)destleft;
543 /* allocate a buffer big enough to hold an 8->16 bit expansion */
544 transname = uma_zalloc(udf_zone_trans, M_WAITOK);
546 if ((unilen = (ssize_t)udf_UncompressUnicode(len, cs0string, transname)) == -1) {
547 printf("udf: Unicode translation failed\n");
548 uma_zfree(udf_zone_trans, transname);
552 for (i = 0; i < unilen ; i++) {
553 if (transname[i] & 0xff00) {
554 destname[i] = '.'; /* Fudge the 16bit chars */
556 destname[i] = transname[i] & 0xff;
559 uma_zfree(udf_zone_trans, transname);
560 destname[unilen] = 0;
561 destlen = (int)unilen;
568 * Compare a CS0 dstring with a name passed in from the VFS layer. Return
569 * 0 on a successful match, nonzero otherwise. Unicode work may need to be done
573 udf_cmpname(char *cs0string, char *cmpname, int cs0len, int cmplen, struct udf_mnt *udfmp)
578 /* This is overkill, but not worth creating a new zone */
579 transname = uma_zalloc(udf_zone_trans, M_WAITOK);
581 cs0len = udf_transname(cs0string, transname, cs0len, udfmp);
583 /* Easy check. If they aren't the same length, they aren't equal */
584 if ((cs0len == 0) || (cs0len != cmplen))
587 error = bcmp(transname, cmpname, cmplen);
589 uma_zfree(udf_zone_trans, transname);
594 struct dirent *dirent;
602 udf_uiodir(struct udf_uiodir *uiodir, int de_size, struct uio *uio, long cookie)
604 if (uiodir->cookies != NULL) {
605 if (++uiodir->acookies > uiodir->ncookies) {
609 *uiodir->cookies++ = cookie;
612 if (uio->uio_resid < de_size) {
617 return (uiomove(uiodir->dirent, de_size, uio));
620 static struct udf_dirstream *
621 udf_opendir(struct udf_node *node, int offset, int fsize, struct udf_mnt *udfmp)
623 struct udf_dirstream *ds;
625 ds = uma_zalloc(udf_zone_ds, M_WAITOK | M_ZERO);
635 static struct fileid_desc *
636 udf_getfid(struct udf_dirstream *ds)
638 struct fileid_desc *fid;
639 int error, frag_size = 0, total_fid_size;
641 /* End of directory? */
642 if (ds->offset + ds->off >= ds->fsize) {
647 /* Grab the first extent of the directory */
650 error = udf_readatoffset(ds->node, &ds->size, ds->offset,
661 * Clean up from a previous fragmented FID.
662 * XXX Is this the right place for this?
664 if (ds->fid_fragment && ds->buf != NULL) {
665 ds->fid_fragment = 0;
666 free(ds->buf, M_UDFFID);
669 fid = (struct fileid_desc*)&ds->data[ds->off];
672 * Check to see if the fid is fragmented. The first test
673 * ensures that we don't wander off the end of the buffer
674 * looking for the l_iu and l_fi fields.
676 if (ds->off + UDF_FID_SIZE > ds->size ||
677 ds->off + le16toh(fid->l_iu) + fid->l_fi + UDF_FID_SIZE > ds->size){
679 /* Copy what we have of the fid into a buffer */
680 frag_size = ds->size - ds->off;
681 if (frag_size >= ds->udfmp->bsize) {
682 printf("udf: invalid FID fragment\n");
688 * File ID descriptors can only be at most one
689 * logical sector in size.
691 ds->buf = malloc(ds->udfmp->bsize, M_UDFFID,
693 bcopy(fid, ds->buf, frag_size);
695 /* Reduce all of the casting magic */
696 fid = (struct fileid_desc*)ds->buf;
701 /* Fetch the next allocation */
702 ds->offset += ds->size;
704 error = udf_readatoffset(ds->node, &ds->size, ds->offset,
712 * If the fragment was so small that we didn't get
713 * the l_iu and l_fi fields, copy those in.
715 if (frag_size < UDF_FID_SIZE)
716 bcopy(ds->data, &ds->buf[frag_size],
717 UDF_FID_SIZE - frag_size);
720 * Now that we have enough of the fid to work with,
721 * copy in the rest of the fid from the new
724 total_fid_size = UDF_FID_SIZE + le16toh(fid->l_iu) + fid->l_fi;
725 if (total_fid_size > ds->udfmp->bsize) {
726 printf("udf: invalid FID\n");
730 bcopy(ds->data, &ds->buf[frag_size],
731 total_fid_size - frag_size);
733 ds->fid_fragment = 1;
735 total_fid_size = le16toh(fid->l_iu) + fid->l_fi + UDF_FID_SIZE;
739 * Update the offset. Align on a 4 byte boundary because the
742 ds->this_off = ds->offset + ds->off;
743 if (!ds->fid_fragment) {
744 ds->off += (total_fid_size + 3) & ~0x03;
746 ds->off = (total_fid_size - frag_size + 3) & ~0x03;
753 udf_closedir(struct udf_dirstream *ds)
759 if (ds->fid_fragment && ds->buf != NULL)
760 free(ds->buf, M_UDFFID);
762 uma_zfree(udf_zone_ds, ds);
766 udf_readdir(struct vop_readdir_args *a)
771 struct udf_node *node;
772 struct udf_mnt *udfmp;
773 struct fileid_desc *fid;
774 struct udf_uiodir uiodir;
775 struct udf_dirstream *ds;
776 u_long *cookies = NULL;
786 if (a->a_ncookies != NULL) {
788 * Guess how many entries are needed. If we run out, this
789 * function will be called again and thing will pick up were
792 ncookies = uio->uio_resid / 8;
793 cookies = malloc(sizeof(u_long) * ncookies,
797 uiodir.ncookies = ncookies;
798 uiodir.cookies = cookies;
801 uiodir.cookies = NULL;
805 * Iterate through the file id descriptors. Give the parent dir
806 * entry special attention.
808 ds = udf_opendir(node, uio->uio_offset, le64toh(node->fentry->inf_len),
811 while ((fid = udf_getfid(ds)) != NULL) {
813 /* XXX Should we return an error on a bad fid? */
814 if (udf_checktag(&fid->tag, TAGID_FID)) {
815 printf("Invalid FID tag\n");
816 hexdump(fid, UDF_FID_SIZE, NULL, 0);
821 /* Is this a deleted file? */
822 if (fid->file_char & UDF_FILE_CHAR_DEL)
825 if ((fid->l_fi == 0) && (fid->file_char & UDF_FILE_CHAR_PAR)) {
826 /* Do up the '.' and '..' entries. Dummy values are
827 * used for the cookies since the offset here is
828 * usually zero, and NFS doesn't like that value
830 dir.d_fileno = node->hash_id;
833 dir.d_name[1] = '\0';
835 dir.d_reclen = GENERIC_DIRSIZ(&dir);
836 uiodir.dirent = &dir;
837 error = udf_uiodir(&uiodir, dir.d_reclen, uio, 1);
841 dir.d_fileno = udf_getid(&fid->icb);
845 dir.d_name[2] = '\0';
847 dir.d_reclen = GENERIC_DIRSIZ(&dir);
848 uiodir.dirent = &dir;
849 error = udf_uiodir(&uiodir, dir.d_reclen, uio, 2);
851 dir.d_namlen = udf_transname(&fid->data[fid->l_iu],
852 &dir.d_name[0], fid->l_fi, udfmp);
853 dir.d_fileno = udf_getid(&fid->icb);
854 dir.d_type = (fid->file_char & UDF_FILE_CHAR_DIR) ?
856 dir.d_reclen = GENERIC_DIRSIZ(&dir);
857 uiodir.dirent = &dir;
858 error = udf_uiodir(&uiodir, dir.d_reclen, uio,
863 uio->uio_offset = ds->offset + ds->off;
866 /* tell the calling layer whether we need to be called again */
867 *a->a_eofflag = uiodir.eofflag;
876 if (a->a_ncookies != NULL) {
878 free(cookies, M_TEMP);
880 *a->a_ncookies = uiodir.acookies;
881 *a->a_cookies = cookies;
889 udf_readlink(struct vop_readlink_args *ap)
891 struct path_component *pc, *end;
895 struct udf_node *node;
898 int error, len, root;
901 * A symbolic link in UDF is a list of variable-length path
902 * component structures. We build a pathname in the caller's
903 * uio by traversing this list.
907 len = le64toh(node->fentry->inf_len);
908 buf = malloc(len, M_DEVBUF, M_WAITOK);
909 iov[0].iov_len = len;
910 iov[0].iov_base = buf;
914 uio.uio_resid = iov[0].iov_len;
915 uio.uio_segflg = UIO_SYSSPACE;
916 uio.uio_rw = UIO_READ;
917 uio.uio_td = curthread;
918 error = VOP_READ(vp, &uio, 0, ap->a_cred);
923 end = (void *)((char *)buf + len);
928 /* Only allow this at the beginning of a path. */
929 if ((void *)pc != buf) {
941 case UDF_PATH_DOTDOT:
946 if (pc->length == 0) {
951 * XXX: We only support CS8 which appears to map
954 switch (pc->identifier[0]) {
956 cp = pc->identifier + 1;
957 len = pc->length - 1;
970 * If this is not the first component, insert a path
974 /* If we started with root we already have a "/". */
978 if (ap->a_uio->uio_resid < 1) {
979 error = ENAMETOOLONG;
982 error = uiomove("/", 1, ap->a_uio);
988 /* Append string at 'cp' of length 'len' to our path. */
989 if (len > ap->a_uio->uio_resid) {
990 error = ENAMETOOLONG;
993 error = uiomove(cp, len, ap->a_uio);
997 /* Advance to next component. */
998 pc = (void *)((char *)pc + 4 + pc->length);
1001 free(buf, M_DEVBUF);
1006 udf_strategy(struct vop_strategy_args *a)
1010 struct udf_node *node;
1021 if (bp->b_blkno == bp->b_lblkno) {
1022 offset = lblktosize(node->udfmp, bp->b_lblkno);
1023 error = udf_bmap_internal(node, offset, §or, &maxsize);
1030 /* bmap gives sector numbers, bio works with device blocks */
1031 bp->b_blkno = sector << (node->udfmp->bshift - DEV_BSHIFT);
1033 bo = node->udfmp->im_bo;
1034 bp->b_iooffset = dbtob(bp->b_blkno);
1035 BO_STRATEGY(bo, bp);
1040 udf_bmap(struct vop_bmap_args *a)
1042 struct udf_node *node;
1048 node = VTON(a->a_vp);
1050 if (a->a_bop != NULL)
1051 *a->a_bop = &node->udfmp->im_devvp->v_bufobj;
1052 if (a->a_bnp == NULL)
1058 * UDF_INVALID_BMAP means data embedded into fentry, this is an internal
1059 * error that should not be propagated to calling code.
1060 * Most obvious mapping for this error is EOPNOTSUPP as we can not truly
1061 * translate block numbers in this case.
1062 * Incidentally, this return code will make vnode pager to use VOP_READ
1063 * to get data for mmap-ed pages and udf_read knows how to do the right
1064 * thing for this kind of files.
1066 error = udf_bmap_internal(node, a->a_bn << node->udfmp->bshift,
1067 &lsector, &max_size);
1068 if (error == UDF_INVALID_BMAP)
1069 return (EOPNOTSUPP);
1073 /* Translate logical to physical sector number */
1074 *a->a_bnp = lsector << (node->udfmp->bshift - DEV_BSHIFT);
1077 * Determine maximum number of readahead blocks following the
1081 nblk = (max_size >> node->udfmp->bshift) - 1;
1084 else if (nblk >= (MAXBSIZE >> node->udfmp->bshift))
1085 *a->a_runp = (MAXBSIZE >> node->udfmp->bshift) - 1;
1098 * The all powerful VOP_LOOKUP().
1101 udf_lookup(struct vop_cachedlookup_args *a)
1104 struct vnode *tdp = NULL;
1105 struct vnode **vpp = a->a_vpp;
1106 struct udf_node *node;
1107 struct udf_mnt *udfmp;
1108 struct fileid_desc *fid = NULL;
1109 struct udf_dirstream *ds;
1115 int offset, error = 0;
1116 int fsize, lkflags, ltype, numdirpasses;
1120 udfmp = node->udfmp;
1121 nameiop = a->a_cnp->cn_nameiop;
1122 flags = a->a_cnp->cn_flags;
1123 lkflags = a->a_cnp->cn_lkflags;
1124 nameptr = a->a_cnp->cn_nameptr;
1125 namelen = a->a_cnp->cn_namelen;
1126 fsize = le64toh(node->fentry->inf_len);
1129 * If this is a LOOKUP and we've already partially searched through
1130 * the directory, pick up where we left off and flag that the
1131 * directory may need to be searched twice. For a full description,
1132 * see /sys/fs/cd9660/cd9660_lookup.c:cd9660_lookup()
1134 if (nameiop != LOOKUP || node->diroff == 0 || node->diroff > fsize) {
1138 offset = node->diroff;
1140 nchstats.ncs_2passes++;
1144 ds = udf_opendir(node, offset, fsize, udfmp);
1146 while ((fid = udf_getfid(ds)) != NULL) {
1148 /* XXX Should we return an error on a bad fid? */
1149 if (udf_checktag(&fid->tag, TAGID_FID)) {
1150 printf("udf_lookup: Invalid tag\n");
1155 /* Is this a deleted file? */
1156 if (fid->file_char & UDF_FILE_CHAR_DEL)
1159 if ((fid->l_fi == 0) && (fid->file_char & UDF_FILE_CHAR_PAR)) {
1160 if (flags & ISDOTDOT) {
1161 id = udf_getid(&fid->icb);
1165 if (!(udf_cmpname(&fid->data[fid->l_iu],
1166 nameptr, fid->l_fi, namelen, udfmp))) {
1167 id = udf_getid(&fid->icb);
1176 /* XXX Bail out here? */
1182 /* Did we have a match? */
1185 * Remember where this entry was if it's the final
1188 if ((flags & ISLASTCN) && nameiop == LOOKUP)
1189 node->diroff = ds->offset + ds->off;
1190 if (numdirpasses == 2)
1191 nchstats.ncs_pass2++;
1194 if (flags & ISDOTDOT) {
1195 error = vn_vget_ino(dvp, id, lkflags, &tdp);
1196 } else if (node->hash_id == id) {
1197 VREF(dvp); /* we want ourself, ie "." */
1199 * When we lookup "." we still can be asked to lock it
1202 ltype = lkflags & LK_TYPE_MASK;
1203 if (ltype != VOP_ISLOCKED(dvp)) {
1204 if (ltype == LK_EXCLUSIVE)
1205 vn_lock(dvp, LK_UPGRADE | LK_RETRY);
1206 else /* if (ltype == LK_SHARED) */
1207 vn_lock(dvp, LK_DOWNGRADE | LK_RETRY);
1211 error = udf_vget(udfmp->im_mountp, id, lkflags, &tdp);
1214 /* Put this entry in the cache */
1215 if (flags & MAKEENTRY)
1216 cache_enter(dvp, *vpp, a->a_cnp);
1219 /* Name wasn't found on this pass. Do another pass? */
1220 if (numdirpasses == 2) {
1228 /* Enter name into cache as non-existant */
1229 if (flags & MAKEENTRY)
1230 cache_enter(dvp, *vpp, a->a_cnp);
1232 if ((flags & ISLASTCN) &&
1233 (nameiop == CREATE || nameiop == RENAME)) {
1244 udf_reclaim(struct vop_reclaim_args *a)
1247 struct udf_node *unode;
1253 * Destroy the vm object and flush associated pages.
1255 vnode_destroy_vobject(vp);
1257 if (unode != NULL) {
1258 vfs_hash_remove(vp);
1260 if (unode->fentry != NULL)
1261 free(unode->fentry, M_UDFFENTRY);
1262 uma_zfree(udf_zone_node, unode);
1270 udf_vptofh(struct vop_vptofh_args *a)
1272 struct udf_node *node;
1275 node = VTON(a->a_vp);
1276 ifhp = (struct ifid *)a->a_fhp;
1277 ifhp->ifid_len = sizeof(struct ifid);
1278 ifhp->ifid_ino = node->hash_id;
1284 * Read the block and then set the data pointer to correspond with the
1285 * offset passed in. Only read in at most 'size' bytes, and then set 'size'
1286 * to the number of bytes pointed to. If 'size' is zero, try to read in a
1289 * Note that *bp may be assigned error or not.
1293 udf_readatoffset(struct udf_node *node, int *size, off_t offset,
1294 struct buf **bp, uint8_t **data)
1296 struct udf_mnt *udfmp = node->udfmp;
1297 struct vnode *vp = node->i_vnode;
1298 struct file_entry *fentry;
1307 * This call is made *not* only to detect UDF_INVALID_BMAP case,
1308 * max_size is used as an ad-hoc read-ahead hint for "normal" case.
1310 error = udf_bmap_internal(node, offset, §or, &max_size);
1311 if (error == UDF_INVALID_BMAP) {
1313 * This error means that the file *data* is stored in the
1314 * allocation descriptor field of the file entry.
1316 fentry = node->fentry;
1317 *data = &fentry->data[le32toh(fentry->l_ea)];
1318 *size = le32toh(fentry->l_ad);
1319 if (offset >= *size)
1326 } else if (error != 0) {
1330 /* Adjust the size so that it is within range */
1331 if (*size == 0 || *size > max_size)
1335 * Because we will read starting at block boundary, we need to adjust
1336 * how much we need to read so that all promised data is in.
1337 * Also, we can't promise to read more than MAXBSIZE bytes starting
1338 * from block boundary, so adjust what we promise too.
1340 off = blkoff(udfmp, offset);
1341 *size = min(*size, MAXBSIZE - off);
1342 adj_size = (*size + off + udfmp->bmask) & ~udfmp->bmask;
1344 if ((error = bread(vp, lblkno(udfmp, offset), adj_size, NOCRED, bp))) {
1345 printf("warning: udf_readlblks returned error %d\n", error);
1346 /* note: *bp may be non-NULL */
1351 *data = (uint8_t *)&bp1->b_data[offset & udfmp->bmask];
1356 * Translate a file offset into a logical block and then into a physical
1358 * max_size - maximum number of bytes that can be read starting from given
1359 * offset, rather than beginning of calculated sector number
1362 udf_bmap_internal(struct udf_node *node, off_t offset, daddr_t *sector,
1365 struct udf_mnt *udfmp;
1366 struct file_entry *fentry;
1368 struct icb_tag *tag;
1369 uint32_t icblen = 0;
1371 int ad_offset, ad_num = 0;
1374 udfmp = node->udfmp;
1375 fentry = node->fentry;
1376 tag = &fentry->icbtag;
1378 switch (le16toh(tag->strat_type)) {
1383 printf("Cannot deal with strategy4096 yet!\n");
1387 printf("Unknown strategy type %d\n", tag->strat_type);
1391 switch (le16toh(tag->flags) & 0x7) {
1394 * The allocation descriptor field is filled with short_ad's.
1395 * If the offset is beyond the current extent, look for the
1400 ad_offset = sizeof(struct short_ad) * ad_num;
1401 if (ad_offset > le32toh(fentry->l_ad)) {
1402 printf("File offset out of bounds\n");
1405 icb = GETICB(short_ad, fentry,
1406 le32toh(fentry->l_ea) + ad_offset);
1407 icblen = GETICBLEN(short_ad, icb);
1409 } while(offset >= icblen);
1411 lsector = (offset >> udfmp->bshift) +
1412 le32toh(((struct short_ad *)(icb))->pos);
1414 *max_size = icblen - offset;
1419 * The allocation descriptor field is filled with long_ad's
1420 * If the offset is beyond the current extent, look for the
1425 ad_offset = sizeof(struct long_ad) * ad_num;
1426 if (ad_offset > le32toh(fentry->l_ad)) {
1427 printf("File offset out of bounds\n");
1430 icb = GETICB(long_ad, fentry,
1431 le32toh(fentry->l_ea) + ad_offset);
1432 icblen = GETICBLEN(long_ad, icb);
1434 } while(offset >= icblen);
1436 lsector = (offset >> udfmp->bshift) +
1437 le32toh(((struct long_ad *)(icb))->loc.lb_num);
1439 *max_size = icblen - offset;
1444 * This type means that the file *data* is stored in the
1445 * allocation descriptor field of the file entry.
1448 *sector = node->hash_id + udfmp->part_start;
1450 return (UDF_INVALID_BMAP);
1452 /* DirectCD does not use extended_ad's */
1454 printf("Unsupported allocation descriptor %d\n",
1459 *sector = lsector + udfmp->part_start;
1462 * Check the sparing table. Each entry represents the beginning of
1465 if (udfmp->s_table != NULL) {
1466 for (i = 0; i< udfmp->s_table_entries; i++) {
1468 lsector - le32toh(udfmp->s_table->entries[i].org);
1469 if ((p_offset < udfmp->p_sectors) && (p_offset >= 0)) {
1471 le32toh(udfmp->s_table->entries[i].map) +