1 /*- 2 * Copyright (c) 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley 6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 7 * Support code is derived from software contributed to Berkeley 8 * by Atsushi Murai (amurai@spec.co.jp). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)cd9660_vnops.c 8.19 (Berkeley) 5/27/95 35 * $FreeBSD: src/sys/isofs/cd9660/cd9660_vnops.c,v 1.62 1999/12/15 23:01:51 eivind Exp $ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/uio.h> 41 #include <sys/proc.h> 42 #include <sys/namei.h> 43 #include <sys/kernel.h> 44 #include <sys/stat.h> 45 #include <sys/buf.h> 46 #include <sys/mount.h> 47 #include <sys/vnode.h> 48 #include <vfs/fifofs/fifo.h> 49 #include <sys/malloc.h> 50 #include <sys/dirent.h> 51 #include <sys/unistd.h> 52 #include <sys/filio.h> 53 #include <sys/lockf.h> 54 #include <sys/objcache.h> 55 56 #include <vm/vm.h> 57 #include <vm/vnode_pager.h> 58 59 #include <sys/buf2.h> 60 61 #include "iso.h" 62 #include "cd9660_node.h" 63 #include "iso_rrip.h" 64 65 static int cd9660_access(struct vop_access_args *); 66 static int cd9660_advlock(struct vop_advlock_args *); 67 static int cd9660_getattr(struct vop_getattr_args *); 68 static int cd9660_ioctl(struct vop_ioctl_args *); 69 static int cd9660_pathconf(struct vop_pathconf_args *); 70 static int cd9660_open(struct vop_open_args *); 71 static int cd9660_read(struct vop_read_args *); 72 static int cd9660_setattr(struct vop_setattr_args *); 73 struct isoreaddir; 74 static int iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off); 75 static int iso_shipdir(struct isoreaddir *idp); 76 static int cd9660_readdir(struct vop_readdir_args *); 77 static int cd9660_readlink(struct vop_readlink_args *ap); 78 static int cd9660_strategy(struct vop_strategy_args *); 79 static int cd9660_print(struct vop_print_args *); 80 81 /* 82 * Setattr call. Only allowed for block and character special devices. 83 * 84 * cd9660_setattr(struct vnode *a_vp, struct vattr *a_vap, 85 * struct ucred *a_cred, struct proc *a_p) 86 */ 87 int 88 cd9660_setattr(struct vop_setattr_args *ap) 89 { 90 struct vnode *vp = ap->a_vp; 91 struct vattr *vap = ap->a_vap; 92 93 if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL || 94 vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL || 95 vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL) 96 return (EROFS); 97 if (vap->va_size != (u_quad_t)VNOVAL) { 98 switch (vp->v_type) { 99 case VDIR: 100 return (EISDIR); 101 case VLNK: 102 case VREG: 103 case VDATABASE: 104 return (EROFS); 105 case VCHR: 106 case VBLK: 107 case VSOCK: 108 case VFIFO: 109 default: 110 return (0); 111 } 112 } 113 return (0); 114 } 115 116 /* 117 * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. 118 * The mode is shifted to select the owner/group/other fields. The 119 * super user is granted all permissions. 120 * 121 * cd9660_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 122 * struct proc *a_p) 123 */ 124 /* ARGSUSED */ 125 static int 126 cd9660_access(struct vop_access_args *ap) 127 { 128 struct vnode *vp = ap->a_vp; 129 struct iso_node *ip = VTOI(vp); 130 131 KKASSERT(vp->v_mount->mnt_flag & MNT_RDONLY); 132 return (vop_helper_access(ap, ip->inode.iso_uid, ip->inode.iso_gid, 133 ip->inode.iso_mode, 0)); 134 } 135 136 /* 137 * cd9660_getattr(struct vnode *a_vp, struct vattr *a_vap) 138 */ 139 static int 140 cd9660_getattr(struct vop_getattr_args *ap) 141 { 142 struct vnode *vp = ap->a_vp; 143 struct vattr *vap = ap->a_vap; 144 struct iso_node *ip = VTOI(vp); 145 146 vap->va_fsid = devid_from_dev(ip->i_dev); 147 vap->va_fileid = ip->i_number; 148 149 vap->va_mode = ip->inode.iso_mode; 150 vap->va_nlink = ip->inode.iso_links; 151 vap->va_uid = ip->inode.iso_uid; 152 vap->va_gid = ip->inode.iso_gid; 153 vap->va_atime = ip->inode.iso_atime; 154 vap->va_mtime = ip->inode.iso_mtime; 155 vap->va_ctime = ip->inode.iso_ctime; 156 vap->va_rmajor = umajor(ip->inode.iso_rdev); 157 vap->va_rminor = uminor(ip->inode.iso_rdev); 158 159 vap->va_size = (u_quad_t)(unsigned long)ip->i_size; 160 if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) { 161 struct vop_readlink_args rdlnk; 162 struct iovec aiov; 163 struct uio auio; 164 char *cp; 165 166 cp = kmalloc(MAXPATHLEN, M_TEMP, M_WAITOK); 167 aiov.iov_base = cp; 168 aiov.iov_len = MAXPATHLEN; 169 auio.uio_iov = &aiov; 170 auio.uio_iovcnt = 1; 171 auio.uio_offset = 0; 172 auio.uio_rw = UIO_READ; 173 auio.uio_segflg = UIO_SYSSPACE; 174 auio.uio_td = curthread; 175 auio.uio_resid = MAXPATHLEN; 176 rdlnk.a_uio = &auio; 177 rdlnk.a_vp = ap->a_vp; 178 rdlnk.a_cred = proc0.p_ucred; /* use root cred */ 179 if (cd9660_readlink(&rdlnk) == 0) 180 vap->va_size = MAXPATHLEN - auio.uio_resid; 181 kfree(cp, M_TEMP); 182 } 183 vap->va_flags = 0; 184 vap->va_gen = 1; 185 vap->va_blocksize = ip->i_mnt->logical_block_size; 186 vap->va_bytes = (u_quad_t) ip->i_size; 187 vap->va_type = vp->v_type; 188 vap->va_filerev = 0; 189 return (0); 190 } 191 192 /* 193 * Vnode op for ioctl. 194 * 195 * cd9660_ioctl(struct vnode *a_vp, int a_command, caddr_t a_data, 196 * int a_fflag, struct ucred *a_cred, struct proc *a_p) 197 */ 198 static int 199 cd9660_ioctl(struct vop_ioctl_args *ap) 200 { 201 struct vnode *vp = ap->a_vp; 202 struct iso_node *ip = VTOI(vp); 203 204 switch (ap->a_command) { 205 206 case FIOGETLBA: 207 *(int *)(ap->a_data) = ip->iso_start; 208 return 0; 209 default: 210 return (ENOTTY); 211 } 212 } 213 214 /* 215 * open is called when the kernel intends to read or memory map a vnode. 216 */ 217 static int 218 cd9660_open(struct vop_open_args *ap) 219 { 220 return(vop_stdopen(ap)); 221 } 222 223 /* 224 * Vnode op for reading. 225 * 226 * cd9660_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 227 * struct ucred *a_cred) 228 */ 229 static int 230 cd9660_read(struct vop_read_args *ap) 231 { 232 struct vnode *vp = ap->a_vp; 233 struct uio *uio = ap->a_uio; 234 struct iso_node *ip = VTOI(vp); 235 struct iso_mnt *imp; 236 struct buf *bp; 237 daddr_t lbn, rablock; 238 off_t raoffset; 239 off_t loffset; 240 off_t diff; 241 int rasize, error = 0; 242 int seqcount; 243 long size, n, on; 244 245 seqcount = ap->a_ioflag >> IO_SEQSHIFT; 246 247 if (uio->uio_resid == 0) 248 return (0); 249 if (uio->uio_offset < 0) 250 return (EINVAL); 251 ip->i_flag |= IN_ACCESS; 252 imp = ip->i_mnt; 253 do { 254 lbn = lblkno(imp, uio->uio_offset); 255 loffset = lblktooff(imp, lbn); 256 on = blkoff(imp, uio->uio_offset); 257 n = szmin((u_int)(imp->logical_block_size - on), 258 uio->uio_resid); 259 diff = (off_t)ip->i_size - uio->uio_offset; 260 if (diff <= 0) 261 return (0); 262 if (diff < n) 263 n = diff; 264 size = blksize(imp, ip, lbn); 265 rablock = lbn + 1; 266 raoffset = lblktooff(imp, rablock); 267 if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) { 268 if (raoffset < ip->i_size) { 269 error = cluster_read(vp, (off_t)ip->i_size, 270 loffset, size, 271 uio->uio_resid, 272 (ap->a_ioflag >> IO_SEQSHIFT) * 273 MAXBSIZE, 274 &bp); 275 } else { 276 error = bread(vp, loffset, size, &bp); 277 } 278 } else { 279 if (seqcount > 1 && 280 lblktosize(imp, rablock) < ip->i_size) { 281 rasize = blksize(imp, ip, rablock); 282 error = breadn(vp, loffset, size, &raoffset, 283 &rasize, 1, &bp); 284 } else 285 error = bread(vp, loffset, size, &bp); 286 } 287 n = imin(n, size - bp->b_resid); 288 if (error) { 289 brelse(bp); 290 return (error); 291 } 292 293 error = uiomove(bp->b_data + on, (int)n, uio); 294 brelse(bp); 295 } while (error == 0 && uio->uio_resid > 0 && n != 0); 296 return (error); 297 } 298 299 /* struct dirent + enough space for the maximum supported size */ 300 struct iso_dirent { 301 struct dirent de; 302 char de_name[_DIRENT_RECLEN(NAME_MAX) - sizeof(struct dirent)]; 303 }; 304 305 /* 306 * Structure for reading directories 307 */ 308 struct isoreaddir { 309 struct iso_dirent saveent; 310 struct iso_dirent assocent; 311 struct iso_dirent current; 312 off_t saveoff; 313 off_t assocoff; 314 off_t curroff; 315 struct uio *uio; 316 off_t uio_off; 317 int eofflag; 318 off_t *cookies; 319 int ncookies; 320 }; 321 322 int 323 iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off) 324 { 325 int error; 326 327 dp->d_name[dp->d_namlen] = 0; 328 329 if (idp->uio->uio_resid < _DIRENT_DIRSIZ(dp)) { 330 idp->eofflag = 0; 331 return (-1); 332 } 333 334 if (idp->cookies) { 335 if (idp->ncookies <= 0) { 336 idp->eofflag = 0; 337 return (-1); 338 } 339 340 *idp->cookies++ = off; 341 --idp->ncookies; 342 } 343 344 if ((error = uiomove((caddr_t) dp,_DIRENT_DIRSIZ(dp),idp->uio)) != 0) 345 return (error); 346 idp->uio_off = off; 347 return (0); 348 } 349 350 int 351 iso_shipdir(struct isoreaddir *idp) 352 { 353 struct dirent *dp; 354 int cl, sl, assoc; 355 int error; 356 char *cname, *sname; 357 358 cl = idp->current.de.d_namlen; 359 cname = idp->current.de.d_name; 360 assoc = (cl > 1) && (*cname == ASSOCCHAR); 361 if (assoc) { 362 cl--; 363 cname++; 364 } 365 366 dp = &idp->saveent.de; 367 sname = dp->d_name; 368 if (!(sl = dp->d_namlen)) { 369 dp = &idp->assocent.de; 370 sname = dp->d_name + 1; 371 sl = dp->d_namlen - 1; 372 } 373 if (sl > 0) { 374 if (sl != cl 375 || bcmp(sname,cname,sl)) { 376 if (idp->assocent.de.d_namlen) { 377 if ((error = iso_uiodir(idp,&idp->assocent.de,idp->assocoff)) != 0) 378 return (error); 379 idp->assocent.de.d_namlen = 0; 380 } 381 if (idp->saveent.de.d_namlen) { 382 if ((error = iso_uiodir(idp,&idp->saveent.de,idp->saveoff)) != 0) 383 return (error); 384 idp->saveent.de.d_namlen = 0; 385 } 386 } 387 } 388 if (assoc) { 389 idp->assocoff = idp->curroff; 390 bcopy(&idp->current,&idp->assocent,_DIRENT_DIRSIZ(&idp->current.de)); 391 } else { 392 idp->saveoff = idp->curroff; 393 bcopy(&idp->current,&idp->saveent,_DIRENT_DIRSIZ(&idp->current.de)); 394 } 395 return (0); 396 } 397 398 /* 399 * Vnode op for readdir 400 * 401 * cd9660_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 402 * int *a_eofflag, int *a_ncookies, off_t *a_cookies) 403 */ 404 static int 405 cd9660_readdir(struct vop_readdir_args *ap) 406 { 407 struct uio *uio = ap->a_uio; 408 struct isoreaddir *idp; 409 struct vnode *vdp = ap->a_vp; 410 struct iso_node *dp; 411 struct iso_mnt *imp; 412 struct buf *bp = NULL; 413 struct iso_directory_record *ep; 414 int entryoffsetinblock; 415 doff_t endsearch; 416 u_long bmask; 417 int error = 0; 418 int reclen; 419 u_short namelen; 420 int ncookies = 0; 421 off_t *cookies = NULL; 422 423 dp = VTOI(vdp); 424 imp = dp->i_mnt; 425 bmask = imp->im_bmask; 426 427 error = vn_lock(vdp, LK_EXCLUSIVE | LK_RETRY | LK_FAILRECLAIM); 428 if (error) 429 return (error); 430 431 idp = kmalloc(sizeof(*idp), M_TEMP, M_WAITOK); 432 idp->saveent.de.d_namlen = idp->assocent.de.d_namlen = 0; 433 /* 434 * XXX 435 * Is it worth trying to figure out the type? 436 */ 437 idp->saveent.de.d_type = DT_UNKNOWN; 438 idp->assocent.de.d_type = DT_UNKNOWN; 439 idp->current.de.d_type = DT_UNKNOWN; 440 idp->uio = uio; 441 if (ap->a_ncookies == NULL) { 442 idp->cookies = NULL; 443 } else { 444 /* 445 * Guess the number of cookies needed. Guess at least 446 * 1 to avoid a degenerate case in malloc, and cap at 447 * a reasonable limit. 448 */ 449 ncookies = uio->uio_resid / 16 + 1; 450 if (ncookies > 1024) 451 ncookies = 1024; 452 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK); 453 idp->cookies = cookies; 454 idp->ncookies = ncookies; 455 } 456 idp->eofflag = 1; 457 idp->curroff = uio->uio_offset; 458 459 if ((entryoffsetinblock = idp->curroff & bmask) && 460 (error = cd9660_devblkatoff(vdp, idp->curroff, NULL, &bp))) { 461 kfree(idp, M_TEMP); 462 goto done; 463 } 464 endsearch = dp->i_size; 465 466 while (idp->curroff < endsearch) { 467 /* 468 * If offset is on a block boundary, 469 * read the next directory block. 470 * Release previous if it exists. 471 */ 472 if ((idp->curroff & bmask) == 0) { 473 if (bp != NULL) 474 brelse(bp); 475 if ((error = 476 cd9660_devblkatoff(vdp, idp->curroff, NULL, &bp)) != 0) 477 break; 478 entryoffsetinblock = 0; 479 } 480 /* 481 * Get pointer to next entry. 482 */ 483 ep = (struct iso_directory_record *) 484 ((char *)bp->b_data + entryoffsetinblock); 485 486 reclen = isonum_711(ep->length); 487 if (reclen == 0) { 488 /* skip to next block, if any */ 489 idp->curroff = 490 (idp->curroff & ~bmask) + imp->logical_block_size; 491 continue; 492 } 493 494 if (reclen < ISO_DIRECTORY_RECORD_SIZE) { 495 error = EINVAL; 496 /* illegal entry, stop */ 497 break; 498 } 499 500 if (entryoffsetinblock + reclen > imp->logical_block_size) { 501 error = EINVAL; 502 /* illegal directory, so stop looking */ 503 break; 504 } 505 506 idp->current.de.d_namlen = isonum_711(ep->name_len); 507 508 if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.de.d_namlen) { 509 error = EINVAL; 510 /* illegal entry, stop */ 511 break; 512 } 513 514 if (isonum_711(ep->flags)&2) 515 idp->current.de.d_ino = isodirino(ep, imp); 516 else 517 idp->current.de.d_ino = bp->b_bio1.bio_offset + 518 entryoffsetinblock; 519 520 idp->curroff += reclen; 521 522 switch (imp->iso_ftype) { 523 case ISO_FTYPE_RRIP: 524 { 525 ino_t cur_fileno = idp->current.de.d_ino; 526 cd9660_rrip_getname(ep,idp->current.de.d_name, &namelen, 527 &cur_fileno,imp); 528 idp->current.de.d_ino = cur_fileno; 529 idp->current.de.d_namlen = namelen; 530 if (idp->current.de.d_namlen) 531 error = iso_uiodir(idp,&idp->current.de,idp->curroff); 532 break; 533 } 534 default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/ 535 strcpy(idp->current.de.d_name,".."); 536 if (idp->current.de.d_namlen == 1 && ep->name[0] == 0) { 537 idp->current.de.d_namlen = 1; 538 error = iso_uiodir(idp,&idp->current.de,idp->curroff); 539 } else if (idp->current.de.d_namlen == 1 && ep->name[0] == 1) { 540 idp->current.de.d_namlen = 2; 541 error = iso_uiodir(idp,&idp->current.de,idp->curroff); 542 } else { 543 isofntrans(ep->name,idp->current.de.d_namlen, 544 idp->current.de.d_name, &namelen, 545 imp->iso_ftype == ISO_FTYPE_9660, 546 isonum_711(ep->flags)&4, 547 imp->joliet_level, 548 imp->im_flags, 549 imp->im_d2l); 550 idp->current.de.d_namlen = namelen; 551 if (imp->iso_ftype == ISO_FTYPE_DEFAULT) 552 error = iso_shipdir(idp); 553 else 554 error = iso_uiodir(idp,&idp->current.de,idp->curroff); 555 } 556 } 557 if (error) 558 break; 559 560 entryoffsetinblock += reclen; 561 } 562 563 if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) { 564 idp->current.de.d_namlen = 0; 565 error = iso_shipdir(idp); 566 } 567 if (error < 0) 568 error = 0; 569 570 if (ap->a_ncookies != NULL) { 571 if (error) 572 kfree(cookies, M_TEMP); 573 else { 574 /* 575 * Work out the number of cookies actually used. 576 */ 577 *ap->a_ncookies = ncookies - idp->ncookies; 578 *ap->a_cookies = cookies; 579 } 580 } 581 582 if (bp) 583 brelse (bp); 584 585 uio->uio_offset = idp->uio_off; 586 *ap->a_eofflag = idp->eofflag; 587 588 kfree(idp, M_TEMP); 589 590 done: 591 vn_unlock(vdp); 592 return (error); 593 } 594 595 /* 596 * Return target name of a symbolic link 597 * Shouldn't we get the parent vnode and read the data from there? 598 * This could eventually result in deadlocks in cd9660_lookup. 599 * But otherwise the block read here is in the block buffer two times. 600 */ 601 typedef struct iso_directory_record ISODIR; 602 typedef struct iso_node ISONODE; 603 typedef struct iso_mnt ISOMNT; 604 /* 605 * cd9660_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred) 606 */ 607 static int 608 cd9660_readlink(struct vop_readlink_args *ap) 609 { 610 ISONODE *ip; 611 ISODIR *dirp; 612 ISOMNT *imp; 613 struct buf *bp; 614 struct uio *uio; 615 u_short symlen; 616 int error; 617 char *symname; 618 619 ip = VTOI(ap->a_vp); 620 imp = ip->i_mnt; 621 uio = ap->a_uio; 622 623 if (imp->iso_ftype != ISO_FTYPE_RRIP) 624 return (EINVAL); 625 626 /* 627 * Get parents directory record block that this inode included. 628 */ 629 error = bread(imp->im_devvp, 630 rounddown2((off_t)ip->i_number, 1 << imp->im_bshift), 631 imp->logical_block_size, &bp); 632 if (error) { 633 brelse(bp); 634 return (EINVAL); 635 } 636 637 /* 638 * Setup the directory pointer for this inode 639 */ 640 dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask)); 641 642 /* 643 * Just make sure, we have a right one.... 644 * 1: Check not cross boundary on block 645 */ 646 if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length) 647 > (unsigned)imp->logical_block_size) { 648 brelse(bp); 649 return (EINVAL); 650 } 651 652 /* 653 * Now get a buffer 654 * Abuse a namei buffer for now. 655 */ 656 if (uio->uio_segflg == UIO_SYSSPACE) 657 symname = uio->uio_iov->iov_base; 658 else 659 symname = objcache_get(namei_oc, M_WAITOK); 660 661 /* 662 * Ok, we just gathering a symbolic name in SL record. 663 */ 664 if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) { 665 if (uio->uio_segflg != UIO_SYSSPACE) 666 objcache_put(namei_oc, symname); 667 brelse(bp); 668 return (EINVAL); 669 } 670 /* 671 * Don't forget before you leave from home ;-) 672 */ 673 brelse(bp); 674 675 /* 676 * return with the symbolic name to caller's. 677 */ 678 if (uio->uio_segflg != UIO_SYSSPACE) { 679 error = uiomove(symname, symlen, uio); 680 objcache_put(namei_oc, symname); 681 return (error); 682 } 683 uio->uio_resid -= symlen; 684 uio->uio_iov->iov_base = (char *)uio->uio_iov->iov_base + symlen; 685 uio->uio_iov->iov_len -= symlen; 686 return (0); 687 } 688 689 /* 690 * Calculate the logical to physical mapping if not done already, 691 * then call the device strategy routine. 692 * 693 * cd9660_strategy(struct buf *a_vp, struct buf *a_bio) 694 */ 695 static int 696 cd9660_strategy(struct vop_strategy_args *ap) 697 { 698 struct bio *bio = ap->a_bio; 699 struct bio *nbio; 700 struct buf *bp = bio->bio_buf; 701 struct vnode *vp = ap->a_vp; 702 struct iso_node *ip; 703 int error; 704 705 ip = VTOI(vp); 706 if (vp->v_type == VBLK || vp->v_type == VCHR) 707 panic("cd9660_strategy: spec"); 708 nbio = push_bio(bio); 709 if (nbio->bio_offset == NOOFFSET) { 710 error = VOP_BMAP(vp, bio->bio_offset, 711 &nbio->bio_offset, NULL, NULL, bp->b_cmd); 712 if (error) { 713 bp->b_error = error; 714 bp->b_flags |= B_ERROR; 715 /* I/O was never started on nbio, must biodone(bio) */ 716 biodone(bio); 717 return (error); 718 } 719 if (nbio->bio_offset == NOOFFSET) 720 clrbuf(bp); 721 } 722 if (nbio->bio_offset == NOOFFSET) { 723 /* I/O was never started on nbio, must biodone(bio) */ 724 biodone(bio); 725 return (0); 726 } 727 vp = ip->i_devvp; 728 vn_strategy(vp, nbio); 729 return (0); 730 } 731 732 /* 733 * Print out the contents of an inode. 734 * 735 * cd9660_print(struct vnode *a_vp) 736 */ 737 static int 738 cd9660_print(struct vop_print_args *ap) 739 { 740 kprintf("tag VT_ISOFS, isofs vnode\n"); 741 return (0); 742 } 743 744 /* 745 * Return POSIX pathconf information applicable to cd9660 filesystems. 746 * 747 * cd9660_pathconf(struct vnode *a_vp, int a_name, register_t *a_retval) 748 */ 749 static int 750 cd9660_pathconf(struct vop_pathconf_args *ap) 751 { 752 switch (ap->a_name) { 753 case _PC_LINK_MAX: 754 *ap->a_retval = 1; 755 return (0); 756 case _PC_NAME_MAX: 757 if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP) 758 *ap->a_retval = NAME_MAX; 759 else 760 *ap->a_retval = 37; 761 return (0); 762 case _PC_PATH_MAX: 763 *ap->a_retval = PATH_MAX; 764 return (0); 765 case _PC_PIPE_BUF: 766 *ap->a_retval = PIPE_BUF; 767 return (0); 768 case _PC_CHOWN_RESTRICTED: 769 *ap->a_retval = 1; 770 return (0); 771 case _PC_NO_TRUNC: 772 *ap->a_retval = 1; 773 return (0); 774 default: 775 return (EINVAL); 776 } 777 /* NOTREACHED */ 778 } 779 780 /* 781 * Advisory lock support 782 */ 783 static int 784 cd9660_advlock(struct vop_advlock_args *ap) 785 { 786 struct iso_node *ip = VTOI(ap->a_vp); 787 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size)); 788 } 789 790 /* 791 * Global vfs data structures for cd9660 792 */ 793 struct vop_ops cd9660_vnode_vops = { 794 .vop_default = vop_defaultop, 795 .vop_open = cd9660_open, 796 .vop_access = cd9660_access, 797 .vop_advlock = cd9660_advlock, 798 .vop_bmap = cd9660_bmap, 799 .vop_old_lookup = cd9660_lookup, 800 .vop_getattr = cd9660_getattr, 801 .vop_inactive = cd9660_inactive, 802 .vop_ioctl = cd9660_ioctl, 803 .vop_pathconf = cd9660_pathconf, 804 .vop_print = cd9660_print, 805 .vop_read = cd9660_read, 806 .vop_readdir = cd9660_readdir, 807 .vop_readlink = cd9660_readlink, 808 .vop_reclaim = cd9660_reclaim, 809 .vop_setattr = cd9660_setattr, 810 .vop_strategy = cd9660_strategy, 811 .vop_getpages = vop_stdgetpages, 812 .vop_putpages = vop_stdputpages 813 }; 814 815 /* 816 * Special device vnode ops 817 */ 818 struct vop_ops cd9660_spec_vops = { 819 .vop_default = vop_defaultop, 820 .vop_read = vop_stdnoread, 821 .vop_access = cd9660_access, 822 .vop_getattr = cd9660_getattr, 823 .vop_inactive = cd9660_inactive, 824 .vop_print = cd9660_print, 825 .vop_reclaim = cd9660_reclaim, 826 .vop_setattr = cd9660_setattr, 827 }; 828 829 struct vop_ops cd9660_fifo_vops = { 830 .vop_default = fifo_vnoperate, 831 .vop_access = cd9660_access, 832 .vop_getattr = cd9660_getattr, 833 .vop_inactive = cd9660_inactive, 834 .vop_print = cd9660_print, 835 .vop_reclaim = cd9660_reclaim, 836 .vop_setattr = cd9660_setattr, 837 }; 838