2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001, 2002 Scott Long <scottl@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
32 /* Take care of the vnode side of things */
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/namei.h>
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
43 #include <sys/iconv.h>
44 #include <sys/mount.h>
45 #include <sys/vnode.h>
46 #include <sys/dirent.h>
47 #include <sys/queue.h>
48 #include <sys/unistd.h>
49 #include <sys/endian.h>
53 #include <fs/udf/ecma167-udf.h>
54 #include <fs/udf/osta.h>
55 #include <fs/udf/udf.h>
56 #include <fs/udf/udf_mount.h>
58 extern struct iconv_functions *udf_iconv;
60 static vop_access_t udf_access;
61 static vop_getattr_t udf_getattr;
62 static vop_open_t udf_open;
63 static vop_ioctl_t udf_ioctl;
64 static vop_pathconf_t udf_pathconf;
65 static vop_print_t udf_print;
66 static vop_read_t udf_read;
67 static vop_readdir_t udf_readdir;
68 static vop_readlink_t udf_readlink;
69 static vop_setattr_t udf_setattr;
70 static vop_strategy_t udf_strategy;
71 static vop_bmap_t udf_bmap;
72 static vop_cachedlookup_t udf_lookup;
73 static vop_reclaim_t udf_reclaim;
74 static vop_vptofh_t udf_vptofh;
75 static int udf_readatoffset(struct udf_node *node, int *size, off_t offset,
76 struct buf **bp, uint8_t **data);
77 static int udf_bmap_internal(struct udf_node *node, off_t offset,
78 daddr_t *sector, uint32_t *max_size);
80 static struct vop_vector udf_vnodeops = {
81 .vop_default = &default_vnodeops,
83 .vop_access = udf_access,
85 .vop_cachedlookup = udf_lookup,
86 .vop_getattr = udf_getattr,
87 .vop_ioctl = udf_ioctl,
88 .vop_lookup = vfs_cache_lookup,
90 .vop_pathconf = udf_pathconf,
91 .vop_print = udf_print,
93 .vop_readdir = udf_readdir,
94 .vop_readlink = udf_readlink,
95 .vop_reclaim = udf_reclaim,
96 .vop_setattr = udf_setattr,
97 .vop_strategy = udf_strategy,
98 .vop_vptofh = udf_vptofh,
101 struct vop_vector udf_fifoops = {
102 .vop_default = &fifo_specops,
103 .vop_access = udf_access,
104 .vop_getattr = udf_getattr,
105 .vop_print = udf_print,
106 .vop_reclaim = udf_reclaim,
107 .vop_setattr = udf_setattr,
108 .vop_vptofh = udf_vptofh,
111 static MALLOC_DEFINE(M_UDFFID, "udf_fid", "UDF FileId structure");
112 static MALLOC_DEFINE(M_UDFDS, "udf_ds", "UDF Dirstream structure");
114 #define UDF_INVALID_BMAP -1
117 udf_allocv(struct mount *mp, struct vnode **vpp, struct thread *td)
122 error = getnewvnode("udf", mp, &udf_vnodeops, &vp);
124 printf("udf_allocv: failed to allocate new vnode\n");
132 /* Convert file entry permission (5 bits per owner/group/user) to a mode_t */
134 udf_permtomode(struct udf_node *node)
140 perm = le32toh(node->fentry->perm);
141 flags = le16toh(node->fentry->icbtag.flags);
143 mode = perm & UDF_FENTRY_PERM_USER_MASK;
144 mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK) >> 2);
145 mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4);
146 mode |= ((flags & UDF_ICB_TAG_FLAGS_STICKY) << 4);
147 mode |= ((flags & UDF_ICB_TAG_FLAGS_SETGID) << 6);
148 mode |= ((flags & UDF_ICB_TAG_FLAGS_SETUID) << 8);
154 udf_access(struct vop_access_args *a)
157 struct udf_node *node;
163 accmode = a->a_accmode;
165 if (accmode & VWRITE) {
166 switch (vp->v_type) {
177 mode = udf_permtomode(node);
179 return (vaccess(vp->v_type, mode, node->fentry->uid, node->fentry->gid,
180 accmode, a->a_cred, NULL));
184 udf_open(struct vop_open_args *ap) {
185 struct udf_node *np = VTON(ap->a_vp);
188 fsize = le64toh(np->fentry->inf_len);
189 vnode_create_vobject(ap->a_vp, fsize, ap->a_td);
193 static const int mon_lens[2][12] = {
194 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334},
195 {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335}
199 udf_isaleapyear(int year)
203 i = (year % 4) ? 0 : 1;
204 i &= (year % 100) ? 1 : 0;
205 i |= (year % 400) ? 0 : 1;
211 * Timezone calculation compliments of Julian Elischer <julian@elischer.org>.
214 udf_timetotimespec(struct timestamp *time, struct timespec *t)
216 int i, lpyear, daysinyear, year, startyear;
218 uint16_t u_tz_offset;
223 * DirectCD seems to like using bogus year values.
224 * Don't trust time->month as it will be used for an array index.
226 year = le16toh(time->year);
227 if (year < 1970 || time->month < 1 || time->month > 12) {
233 /* Calculate the time and day */
234 t->tv_sec = time->second;
235 t->tv_sec += time->minute * 60;
236 t->tv_sec += time->hour * 3600;
237 t->tv_sec += (time->day - 1) * 3600 * 24;
239 /* Calculate the month */
240 lpyear = udf_isaleapyear(year);
241 t->tv_sec += mon_lens[lpyear][time->month - 1] * 3600 * 24;
243 /* Speed up the calculation */
246 t->tv_sec += 1262304000;
248 } else if (year > 1999) {
249 t->tv_sec += 946684800;
251 } else if (year > 1989) {
252 t->tv_sec += 631152000;
254 } else if (year > 1979) {
255 t->tv_sec += 315532800;
259 daysinyear = (year - startyear) * 365;
260 for (i = startyear; i < year; i++)
261 daysinyear += udf_isaleapyear(i);
262 t->tv_sec += daysinyear * 3600 * 24;
264 /* Calculate microseconds */
265 t->tv_nsec = time->centisec * 10000 + time->hund_usec * 100 +
269 * Calculate the time zone. The timezone is 12 bit signed 2's
270 * complement, so we gotta do some extra magic to handle it right.
272 tz.u_tz_offset = le16toh(time->type_tz);
273 tz.u_tz_offset &= 0x0fff;
274 if (tz.u_tz_offset & 0x0800)
275 tz.u_tz_offset |= 0xf000; /* extend the sign to 16 bits */
276 if ((le16toh(time->type_tz) & 0x1000) && (tz.s_tz_offset != -2047))
277 t->tv_sec -= tz.s_tz_offset * 60;
283 udf_getattr(struct vop_getattr_args *a)
286 struct udf_node *node;
288 struct file_entry *fentry;
296 fentry = node->fentry;
298 vap->va_fsid = dev2udev(node->udfmp->im_dev);
299 vap->va_fileid = node->hash_id;
300 vap->va_mode = udf_permtomode(node);
301 vap->va_nlink = le16toh(fentry->link_cnt);
303 * XXX The spec says that -1 is valid for uid/gid and indicates an
304 * invalid uid/gid. How should this be represented?
306 vap->va_uid = (le32toh(fentry->uid) == -1) ? 0 : le32toh(fentry->uid);
307 vap->va_gid = (le32toh(fentry->gid) == -1) ? 0 : le32toh(fentry->gid);
308 udf_timetotimespec(&fentry->atime, &vap->va_atime);
309 udf_timetotimespec(&fentry->mtime, &vap->va_mtime);
310 vap->va_ctime = vap->va_mtime; /* XXX Stored as an Extended Attribute */
311 vap->va_rdev = NODEV;
312 if (vp->v_type & VDIR) {
314 * Directories that are recorded within their ICB will show
315 * as having 0 blocks recorded. Since tradition dictates
316 * that directories consume at least one logical block,
319 if (fentry->logblks_rec != 0) {
321 le64toh(fentry->logblks_rec) * node->udfmp->bsize;
323 vap->va_size = node->udfmp->bsize;
326 vap->va_size = le64toh(fentry->inf_len);
330 vap->va_blocksize = node->udfmp->bsize;
331 vap->va_bytes = le64toh(fentry->inf_len);
332 vap->va_type = vp->v_type;
333 vap->va_filerev = 0; /* XXX */
338 udf_setattr(struct vop_setattr_args *a)
345 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
346 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
347 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL)
349 if (vap->va_size != (u_quad_t)VNOVAL) {
350 switch (vp->v_type) {
370 * File specific ioctls.
373 udf_ioctl(struct vop_ioctl_args *a)
375 printf("%s called\n", __func__);
380 * I'm not sure that this has much value in a read-only filesystem, but
384 udf_pathconf(struct vop_pathconf_args *a)
388 case _PC_FILESIZEBITS:
392 *a->a_retval = 65535;
395 *a->a_retval = NAME_MAX;
397 case _PC_SYMLINK_MAX:
398 *a->a_retval = MAXPATHLEN;
404 return (vop_stdpathconf(a));
409 udf_print(struct vop_print_args *ap)
411 struct vnode *vp = ap->a_vp;
412 struct udf_node *node = VTON(vp);
414 printf(" ino %lu, on dev %s", (u_long)node->hash_id,
415 devtoname(node->udfmp->im_dev));
416 if (vp->v_type == VFIFO)
422 #define lblkno(udfmp, loc) ((loc) >> (udfmp)->bshift)
423 #define blkoff(udfmp, loc) ((loc) & (udfmp)->bmask)
424 #define lblktosize(udfmp, blk) ((blk) << (udfmp)->bshift)
427 is_data_in_fentry(const struct udf_node *node)
429 const struct file_entry *fentry = node->fentry;
431 return ((le16toh(fentry->icbtag.flags) & 0x7) == 3);
435 udf_read(struct vop_read_args *ap)
437 struct vnode *vp = ap->a_vp;
438 struct uio *uio = ap->a_uio;
439 struct udf_node *node = VTON(vp);
440 struct udf_mnt *udfmp;
441 struct file_entry *fentry;
444 daddr_t lbn, rablock;
450 if (uio->uio_resid == 0)
452 if (uio->uio_offset < 0)
455 if (is_data_in_fentry(node)) {
456 fentry = node->fentry;
457 data = &fentry->data[le32toh(fentry->l_ea)];
458 fsize = le32toh(fentry->l_ad);
461 diff = fsize - uio->uio_offset;
466 error = uiomove(data + uio->uio_offset, (int)n, uio);
470 fsize = le64toh(node->fentry->inf_len);
473 lbn = lblkno(udfmp, uio->uio_offset);
474 on = blkoff(udfmp, uio->uio_offset);
475 n = min((u_int)(udfmp->bsize - on),
477 diff = fsize - uio->uio_offset;
484 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
485 if (lblktosize(udfmp, rablock) < fsize) {
486 error = cluster_read(vp, fsize, lbn, size,
487 NOCRED, uio->uio_resid,
488 (ap->a_ioflag >> 16), 0, &bp);
490 error = bread(vp, lbn, size, NOCRED, &bp);
493 error = bread(vp, lbn, size, NOCRED, &bp);
499 n = min(n, size - bp->b_resid);
501 error = uiomove(bp->b_data + on, (int)n, uio);
503 } while (error == 0 && uio->uio_resid > 0 && n != 0);
508 * Call the OSTA routines to translate the name from a CS0 dstring to a
509 * 16-bit Unicode String. Hooks need to be placed in here to translate from
510 * Unicode to the encoding that the kernel/user expects. Return the length
511 * of the translated string.
514 udf_transname(char *cs0string, char *destname, int len, struct udf_mnt *udfmp)
516 unicode_t *transname;
520 size_t destleft = MAXNAMLEN;
522 /* Convert 16-bit Unicode to destname */
523 if (udfmp->im_flags & UDFMNT_KICONV && udf_iconv) {
524 /* allocate a buffer big enough to hold an 8->16 bit expansion */
525 unibuf = uma_zalloc(udf_zone_trans, M_WAITOK);
527 if ((unilen = (ssize_t)udf_UncompressUnicodeByte(len, cs0string, unibuf)) == -1) {
528 printf("udf: Unicode translation failed\n");
529 uma_zfree(udf_zone_trans, unibuf);
533 while (unilen > 0 && destleft > 0) {
534 udf_iconv->conv(udfmp->im_d2l, __DECONST(const char **,
535 &unibuf), (size_t *)&unilen, (char **)&destname,
537 /* Unconverted character found */
538 if (unilen > 0 && destleft > 0) {
545 uma_zfree(udf_zone_trans, unip);
547 destlen = MAXNAMLEN - (int)destleft;
549 /* allocate a buffer big enough to hold an 8->16 bit expansion */
550 transname = uma_zalloc(udf_zone_trans, M_WAITOK);
552 if ((unilen = (ssize_t)udf_UncompressUnicode(len, cs0string, transname)) == -1) {
553 printf("udf: Unicode translation failed\n");
554 uma_zfree(udf_zone_trans, transname);
558 for (i = 0; i < unilen ; i++) {
559 if (transname[i] & 0xff00) {
560 destname[i] = '.'; /* Fudge the 16bit chars */
562 destname[i] = transname[i] & 0xff;
565 uma_zfree(udf_zone_trans, transname);
566 destname[unilen] = 0;
567 destlen = (int)unilen;
574 * Compare a CS0 dstring with a name passed in from the VFS layer. Return
575 * 0 on a successful match, nonzero otherwise. Unicode work may need to be done
579 udf_cmpname(char *cs0string, char *cmpname, int cs0len, int cmplen, struct udf_mnt *udfmp)
584 /* This is overkill, but not worth creating a new zone */
585 transname = uma_zalloc(udf_zone_trans, M_WAITOK);
587 cs0len = udf_transname(cs0string, transname, cs0len, udfmp);
589 /* Easy check. If they aren't the same length, they aren't equal */
590 if ((cs0len == 0) || (cs0len != cmplen))
593 error = bcmp(transname, cmpname, cmplen);
595 uma_zfree(udf_zone_trans, transname);
600 struct dirent *dirent;
608 udf_uiodir(struct udf_uiodir *uiodir, int de_size, struct uio *uio, long cookie)
610 if (uiodir->cookies != NULL) {
611 if (++uiodir->acookies > uiodir->ncookies) {
615 *uiodir->cookies++ = cookie;
618 if (uio->uio_resid < de_size) {
623 return (uiomove(uiodir->dirent, de_size, uio));
626 static struct udf_dirstream *
627 udf_opendir(struct udf_node *node, int offset, int fsize, struct udf_mnt *udfmp)
629 struct udf_dirstream *ds;
631 ds = uma_zalloc(udf_zone_ds, M_WAITOK | M_ZERO);
641 static struct fileid_desc *
642 udf_getfid(struct udf_dirstream *ds)
644 struct fileid_desc *fid;
645 int error, frag_size = 0, total_fid_size;
647 /* End of directory? */
648 if (ds->offset + ds->off >= ds->fsize) {
653 /* Grab the first extent of the directory */
656 error = udf_readatoffset(ds->node, &ds->size, ds->offset,
667 * Clean up from a previous fragmented FID.
668 * XXX Is this the right place for this?
670 if (ds->fid_fragment && ds->buf != NULL) {
671 ds->fid_fragment = 0;
672 free(ds->buf, M_UDFFID);
675 fid = (struct fileid_desc*)&ds->data[ds->off];
678 * Check to see if the fid is fragmented. The first test
679 * ensures that we don't wander off the end of the buffer
680 * looking for the l_iu and l_fi fields.
682 if (ds->off + UDF_FID_SIZE > ds->size ||
683 ds->off + le16toh(fid->l_iu) + fid->l_fi + UDF_FID_SIZE > ds->size){
685 /* Copy what we have of the fid into a buffer */
686 frag_size = ds->size - ds->off;
687 if (frag_size >= ds->udfmp->bsize) {
688 printf("udf: invalid FID fragment\n");
694 * File ID descriptors can only be at most one
695 * logical sector in size.
697 ds->buf = malloc(ds->udfmp->bsize, M_UDFFID,
699 bcopy(fid, ds->buf, frag_size);
701 /* Reduce all of the casting magic */
702 fid = (struct fileid_desc*)ds->buf;
707 /* Fetch the next allocation */
708 ds->offset += ds->size;
710 error = udf_readatoffset(ds->node, &ds->size, ds->offset,
718 * If the fragment was so small that we didn't get
719 * the l_iu and l_fi fields, copy those in.
721 if (frag_size < UDF_FID_SIZE)
722 bcopy(ds->data, &ds->buf[frag_size],
723 UDF_FID_SIZE - frag_size);
726 * Now that we have enough of the fid to work with,
727 * copy in the rest of the fid from the new
730 total_fid_size = UDF_FID_SIZE + le16toh(fid->l_iu) + fid->l_fi;
731 if (total_fid_size > ds->udfmp->bsize) {
732 printf("udf: invalid FID\n");
736 bcopy(ds->data, &ds->buf[frag_size],
737 total_fid_size - frag_size);
739 ds->fid_fragment = 1;
741 total_fid_size = le16toh(fid->l_iu) + fid->l_fi + UDF_FID_SIZE;
745 * Update the offset. Align on a 4 byte boundary because the
748 ds->this_off = ds->offset + ds->off;
749 if (!ds->fid_fragment) {
750 ds->off += (total_fid_size + 3) & ~0x03;
752 ds->off = (total_fid_size - frag_size + 3) & ~0x03;
759 udf_closedir(struct udf_dirstream *ds)
765 if (ds->fid_fragment && ds->buf != NULL)
766 free(ds->buf, M_UDFFID);
768 uma_zfree(udf_zone_ds, ds);
772 udf_readdir(struct vop_readdir_args *a)
777 struct udf_node *node;
778 struct udf_mnt *udfmp;
779 struct fileid_desc *fid;
780 struct udf_uiodir uiodir;
781 struct udf_dirstream *ds;
782 u_long *cookies = NULL;
792 if (a->a_ncookies != NULL) {
794 * Guess how many entries are needed. If we run out, this
795 * function will be called again and thing will pick up were
798 ncookies = uio->uio_resid / 8;
799 cookies = malloc(sizeof(u_long) * ncookies,
803 uiodir.ncookies = ncookies;
804 uiodir.cookies = cookies;
807 uiodir.cookies = NULL;
811 * Iterate through the file id descriptors. Give the parent dir
812 * entry special attention.
814 ds = udf_opendir(node, uio->uio_offset, le64toh(node->fentry->inf_len),
817 while ((fid = udf_getfid(ds)) != NULL) {
819 /* XXX Should we return an error on a bad fid? */
820 if (udf_checktag(&fid->tag, TAGID_FID)) {
821 printf("Invalid FID tag\n");
822 hexdump(fid, UDF_FID_SIZE, NULL, 0);
827 /* Is this a deleted file? */
828 if (fid->file_char & UDF_FILE_CHAR_DEL)
831 if ((fid->l_fi == 0) && (fid->file_char & UDF_FILE_CHAR_PAR)) {
832 /* Do up the '.' and '..' entries. Dummy values are
833 * used for the cookies since the offset here is
834 * usually zero, and NFS doesn't like that value
836 dir.d_fileno = node->hash_id;
839 dir.d_name[1] = '\0';
841 dir.d_reclen = GENERIC_DIRSIZ(&dir);
842 uiodir.dirent = &dir;
843 error = udf_uiodir(&uiodir, dir.d_reclen, uio, 1);
847 dir.d_fileno = udf_getid(&fid->icb);
851 dir.d_name[2] = '\0';
853 dir.d_reclen = GENERIC_DIRSIZ(&dir);
854 uiodir.dirent = &dir;
855 error = udf_uiodir(&uiodir, dir.d_reclen, uio, 2);
857 dir.d_namlen = udf_transname(&fid->data[fid->l_iu],
858 &dir.d_name[0], fid->l_fi, udfmp);
859 dir.d_fileno = udf_getid(&fid->icb);
860 dir.d_type = (fid->file_char & UDF_FILE_CHAR_DIR) ?
862 dir.d_reclen = GENERIC_DIRSIZ(&dir);
863 uiodir.dirent = &dir;
864 error = udf_uiodir(&uiodir, dir.d_reclen, uio,
869 uio->uio_offset = ds->offset + ds->off;
872 /* tell the calling layer whether we need to be called again */
873 *a->a_eofflag = uiodir.eofflag;
882 if (a->a_ncookies != NULL) {
884 free(cookies, M_TEMP);
886 *a->a_ncookies = uiodir.acookies;
887 *a->a_cookies = cookies;
895 udf_readlink(struct vop_readlink_args *ap)
897 struct path_component *pc, *end;
901 struct udf_node *node;
904 int error, len, root;
907 * A symbolic link in UDF is a list of variable-length path
908 * component structures. We build a pathname in the caller's
909 * uio by traversing this list.
913 len = le64toh(node->fentry->inf_len);
914 buf = malloc(len, M_DEVBUF, M_WAITOK);
915 iov[0].iov_len = len;
916 iov[0].iov_base = buf;
920 uio.uio_resid = iov[0].iov_len;
921 uio.uio_segflg = UIO_SYSSPACE;
922 uio.uio_rw = UIO_READ;
923 uio.uio_td = curthread;
924 error = VOP_READ(vp, &uio, 0, ap->a_cred);
929 end = (void *)((char *)buf + len);
934 /* Only allow this at the beginning of a path. */
935 if ((void *)pc != buf) {
947 case UDF_PATH_DOTDOT:
952 if (pc->length == 0) {
957 * XXX: We only support CS8 which appears to map
960 switch (pc->identifier[0]) {
962 cp = pc->identifier + 1;
963 len = pc->length - 1;
976 * If this is not the first component, insert a path
980 /* If we started with root we already have a "/". */
984 if (ap->a_uio->uio_resid < 1) {
985 error = ENAMETOOLONG;
988 error = uiomove("/", 1, ap->a_uio);
994 /* Append string at 'cp' of length 'len' to our path. */
995 if (len > ap->a_uio->uio_resid) {
996 error = ENAMETOOLONG;
999 error = uiomove(cp, len, ap->a_uio);
1003 /* Advance to next component. */
1004 pc = (void *)((char *)pc + 4 + pc->length);
1007 free(buf, M_DEVBUF);
1012 udf_strategy(struct vop_strategy_args *a)
1016 struct udf_node *node;
1027 if (bp->b_blkno == bp->b_lblkno) {
1028 offset = lblktosize(node->udfmp, bp->b_lblkno);
1029 error = udf_bmap_internal(node, offset, §or, &maxsize);
1036 /* bmap gives sector numbers, bio works with device blocks */
1037 bp->b_blkno = sector << (node->udfmp->bshift - DEV_BSHIFT);
1039 bo = node->udfmp->im_bo;
1040 bp->b_iooffset = dbtob(bp->b_blkno);
1041 BO_STRATEGY(bo, bp);
1046 udf_bmap(struct vop_bmap_args *a)
1048 struct udf_node *node;
1054 node = VTON(a->a_vp);
1056 if (a->a_bop != NULL)
1057 *a->a_bop = &node->udfmp->im_devvp->v_bufobj;
1058 if (a->a_bnp == NULL)
1064 * UDF_INVALID_BMAP means data embedded into fentry, this is an internal
1065 * error that should not be propagated to calling code.
1066 * Most obvious mapping for this error is EOPNOTSUPP as we can not truly
1067 * translate block numbers in this case.
1068 * Incidentally, this return code will make vnode pager to use VOP_READ
1069 * to get data for mmap-ed pages and udf_read knows how to do the right
1070 * thing for this kind of files.
1072 error = udf_bmap_internal(node, a->a_bn << node->udfmp->bshift,
1073 &lsector, &max_size);
1074 if (error == UDF_INVALID_BMAP)
1075 return (EOPNOTSUPP);
1079 /* Translate logical to physical sector number */
1080 *a->a_bnp = lsector << (node->udfmp->bshift - DEV_BSHIFT);
1083 * Determine maximum number of readahead blocks following the
1087 nblk = (max_size >> node->udfmp->bshift) - 1;
1090 else if (nblk >= (MAXBSIZE >> node->udfmp->bshift))
1091 *a->a_runp = (MAXBSIZE >> node->udfmp->bshift) - 1;
1104 * The all powerful VOP_LOOKUP().
1107 udf_lookup(struct vop_cachedlookup_args *a)
1110 struct vnode *tdp = NULL;
1111 struct vnode **vpp = a->a_vpp;
1112 struct udf_node *node;
1113 struct udf_mnt *udfmp;
1114 struct fileid_desc *fid = NULL;
1115 struct udf_dirstream *ds;
1121 int offset, error = 0;
1122 int fsize, lkflags, ltype, numdirpasses;
1126 udfmp = node->udfmp;
1127 nameiop = a->a_cnp->cn_nameiop;
1128 flags = a->a_cnp->cn_flags;
1129 lkflags = a->a_cnp->cn_lkflags;
1130 nameptr = a->a_cnp->cn_nameptr;
1131 namelen = a->a_cnp->cn_namelen;
1132 fsize = le64toh(node->fentry->inf_len);
1135 * If this is a LOOKUP and we've already partially searched through
1136 * the directory, pick up where we left off and flag that the
1137 * directory may need to be searched twice. For a full description,
1138 * see /sys/fs/cd9660/cd9660_lookup.c:cd9660_lookup()
1140 if (nameiop != LOOKUP || node->diroff == 0 || node->diroff > fsize) {
1144 offset = node->diroff;
1146 nchstats.ncs_2passes++;
1150 ds = udf_opendir(node, offset, fsize, udfmp);
1152 while ((fid = udf_getfid(ds)) != NULL) {
1154 /* XXX Should we return an error on a bad fid? */
1155 if (udf_checktag(&fid->tag, TAGID_FID)) {
1156 printf("udf_lookup: Invalid tag\n");
1161 /* Is this a deleted file? */
1162 if (fid->file_char & UDF_FILE_CHAR_DEL)
1165 if ((fid->l_fi == 0) && (fid->file_char & UDF_FILE_CHAR_PAR)) {
1166 if (flags & ISDOTDOT) {
1167 id = udf_getid(&fid->icb);
1171 if (!(udf_cmpname(&fid->data[fid->l_iu],
1172 nameptr, fid->l_fi, namelen, udfmp))) {
1173 id = udf_getid(&fid->icb);
1182 /* XXX Bail out here? */
1188 /* Did we have a match? */
1191 * Remember where this entry was if it's the final
1194 if ((flags & ISLASTCN) && nameiop == LOOKUP)
1195 node->diroff = ds->offset + ds->off;
1196 if (numdirpasses == 2)
1197 nchstats.ncs_pass2++;
1200 if (flags & ISDOTDOT) {
1201 error = vn_vget_ino(dvp, id, lkflags, &tdp);
1202 } else if (node->hash_id == id) {
1203 VREF(dvp); /* we want ourself, ie "." */
1205 * When we lookup "." we still can be asked to lock it
1208 ltype = lkflags & LK_TYPE_MASK;
1209 if (ltype != VOP_ISLOCKED(dvp)) {
1210 if (ltype == LK_EXCLUSIVE)
1211 vn_lock(dvp, LK_UPGRADE | LK_RETRY);
1212 else /* if (ltype == LK_SHARED) */
1213 vn_lock(dvp, LK_DOWNGRADE | LK_RETRY);
1217 error = udf_vget(udfmp->im_mountp, id, lkflags, &tdp);
1220 /* Put this entry in the cache */
1221 if (flags & MAKEENTRY)
1222 cache_enter(dvp, *vpp, a->a_cnp);
1225 /* Name wasn't found on this pass. Do another pass? */
1226 if (numdirpasses == 2) {
1234 /* Enter name into cache as non-existant */
1235 if (flags & MAKEENTRY)
1236 cache_enter(dvp, *vpp, a->a_cnp);
1238 if ((flags & ISLASTCN) &&
1239 (nameiop == CREATE || nameiop == RENAME)) {
1250 udf_reclaim(struct vop_reclaim_args *a)
1253 struct udf_node *unode;
1259 * Destroy the vm object and flush associated pages.
1261 vnode_destroy_vobject(vp);
1263 if (unode != NULL) {
1264 vfs_hash_remove(vp);
1266 if (unode->fentry != NULL)
1267 free(unode->fentry, M_UDFFENTRY);
1268 uma_zfree(udf_zone_node, unode);
1276 udf_vptofh(struct vop_vptofh_args *a)
1278 struct udf_node *node;
1281 node = VTON(a->a_vp);
1282 ifhp = (struct ifid *)a->a_fhp;
1283 ifhp->ifid_len = sizeof(struct ifid);
1284 ifhp->ifid_ino = node->hash_id;
1290 * Read the block and then set the data pointer to correspond with the
1291 * offset passed in. Only read in at most 'size' bytes, and then set 'size'
1292 * to the number of bytes pointed to. If 'size' is zero, try to read in a
1295 * Note that *bp may be assigned error or not.
1299 udf_readatoffset(struct udf_node *node, int *size, off_t offset,
1300 struct buf **bp, uint8_t **data)
1302 struct udf_mnt *udfmp = node->udfmp;
1303 struct vnode *vp = node->i_vnode;
1304 struct file_entry *fentry;
1313 * This call is made *not* only to detect UDF_INVALID_BMAP case,
1314 * max_size is used as an ad-hoc read-ahead hint for "normal" case.
1316 error = udf_bmap_internal(node, offset, §or, &max_size);
1317 if (error == UDF_INVALID_BMAP) {
1319 * This error means that the file *data* is stored in the
1320 * allocation descriptor field of the file entry.
1322 fentry = node->fentry;
1323 *data = &fentry->data[le32toh(fentry->l_ea)];
1324 *size = le32toh(fentry->l_ad);
1325 if (offset >= *size)
1332 } else if (error != 0) {
1336 /* Adjust the size so that it is within range */
1337 if (*size == 0 || *size > max_size)
1341 * Because we will read starting at block boundary, we need to adjust
1342 * how much we need to read so that all promised data is in.
1343 * Also, we can't promise to read more than MAXBSIZE bytes starting
1344 * from block boundary, so adjust what we promise too.
1346 off = blkoff(udfmp, offset);
1347 *size = min(*size, MAXBSIZE - off);
1348 adj_size = (*size + off + udfmp->bmask) & ~udfmp->bmask;
1350 if ((error = bread(vp, lblkno(udfmp, offset), adj_size, NOCRED, bp))) {
1351 printf("warning: udf_readlblks returned error %d\n", error);
1352 /* note: *bp may be non-NULL */
1357 *data = (uint8_t *)&bp1->b_data[offset & udfmp->bmask];
1362 * Translate a file offset into a logical block and then into a physical
1364 * max_size - maximum number of bytes that can be read starting from given
1365 * offset, rather than beginning of calculated sector number
1368 udf_bmap_internal(struct udf_node *node, off_t offset, daddr_t *sector,
1371 struct udf_mnt *udfmp;
1372 struct file_entry *fentry;
1374 struct icb_tag *tag;
1375 uint32_t icblen = 0;
1377 int ad_offset, ad_num = 0;
1380 udfmp = node->udfmp;
1381 fentry = node->fentry;
1382 tag = &fentry->icbtag;
1384 switch (le16toh(tag->strat_type)) {
1389 printf("Cannot deal with strategy4096 yet!\n");
1393 printf("Unknown strategy type %d\n", tag->strat_type);
1397 switch (le16toh(tag->flags) & 0x7) {
1400 * The allocation descriptor field is filled with short_ad's.
1401 * If the offset is beyond the current extent, look for the
1406 ad_offset = sizeof(struct short_ad) * ad_num;
1407 if (ad_offset > le32toh(fentry->l_ad)) {
1408 printf("File offset out of bounds\n");
1411 icb = GETICB(short_ad, fentry,
1412 le32toh(fentry->l_ea) + ad_offset);
1413 icblen = GETICBLEN(short_ad, icb);
1415 } while(offset >= icblen);
1417 lsector = (offset >> udfmp->bshift) +
1418 le32toh(((struct short_ad *)(icb))->pos);
1420 *max_size = icblen - offset;
1425 * The allocation descriptor field is filled with long_ad's
1426 * If the offset is beyond the current extent, look for the
1431 ad_offset = sizeof(struct long_ad) * ad_num;
1432 if (ad_offset > le32toh(fentry->l_ad)) {
1433 printf("File offset out of bounds\n");
1436 icb = GETICB(long_ad, fentry,
1437 le32toh(fentry->l_ea) + ad_offset);
1438 icblen = GETICBLEN(long_ad, icb);
1440 } while(offset >= icblen);
1442 lsector = (offset >> udfmp->bshift) +
1443 le32toh(((struct long_ad *)(icb))->loc.lb_num);
1445 *max_size = icblen - offset;
1450 * This type means that the file *data* is stored in the
1451 * allocation descriptor field of the file entry.
1454 *sector = node->hash_id + udfmp->part_start;
1456 return (UDF_INVALID_BMAP);
1458 /* DirectCD does not use extended_ad's */
1460 printf("Unsupported allocation descriptor %d\n",
1465 *sector = lsector + udfmp->part_start;
1468 * Check the sparing table. Each entry represents the beginning of
1471 if (udfmp->s_table != NULL) {
1472 for (i = 0; i< udfmp->s_table_entries; i++) {
1474 lsector - le32toh(udfmp->s_table->entries[i].org);
1475 if ((p_offset < udfmp->p_sectors) && (p_offset >= 0)) {
1477 le32toh(udfmp->s_table->entries[i].map) +