1 /*- 2 * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org) 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/fs/hpfs/hpfs_vnops.c,v 1.2.2.2 2002/01/15 18:35:09 semenu Exp $ 27 * $DragonFly: src/sys/vfs/hpfs/hpfs_vnops.c,v 1.47 2008/06/19 23:27:39 dillon Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/proc.h> 34 #include <sys/priv.h> 35 #include <sys/time.h> 36 #include <sys/types.h> 37 #include <sys/stat.h> 38 #include <sys/vnode.h> 39 #include <sys/mount.h> 40 #include <sys/namei.h> 41 #include <sys/malloc.h> 42 #include <sys/buf.h> 43 #include <sys/dirent.h> 44 45 #include <machine/limits.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_param.h> 49 #if !defined(__DragonFly__) 50 #include <vm/vm_prot.h> 51 #endif 52 #include <vm/vm_page.h> 53 #include <vm/vm_object.h> 54 #include <vm/vm_pager.h> 55 #include <vm/vm_zone.h> 56 #if defined(__DragonFly__) 57 #include <vm/vnode_pager.h> 58 #endif 59 #include <vm/vm_extern.h> 60 #include <sys/buf2.h> 61 62 #if !defined(__DragonFly__) 63 #include <miscfs/specfs/specdev.h> 64 #include <miscfs/genfs/genfs.h> 65 #endif 66 67 #include <sys/unistd.h> /* for pathconf(2) constants */ 68 69 #include "hpfs.h" 70 #include "hpfsmount.h" 71 #include "hpfs_subr.h" 72 #include "hpfs_ioctl.h" 73 74 static int hpfs_de_uiomove (int *, struct hpfsmount *, 75 struct hpfsdirent *, struct uio *); 76 static int hpfs_ioctl (struct vop_ioctl_args *ap); 77 static int hpfs_read (struct vop_read_args *); 78 static int hpfs_write (struct vop_write_args *ap); 79 static int hpfs_getattr (struct vop_getattr_args *ap); 80 static int hpfs_setattr (struct vop_setattr_args *ap); 81 static int hpfs_inactive (struct vop_inactive_args *ap); 82 static int hpfs_print (struct vop_print_args *ap); 83 static int hpfs_reclaim (struct vop_reclaim_args *ap); 84 static int hpfs_strategy (struct vop_strategy_args *ap); 85 static int hpfs_access (struct vop_access_args *ap); 86 static int hpfs_readdir (struct vop_readdir_args *ap); 87 static int hpfs_lookup (struct vop_old_lookup_args *ap); 88 static int hpfs_create (struct vop_old_create_args *); 89 static int hpfs_remove (struct vop_old_remove_args *); 90 static int hpfs_bmap (struct vop_bmap_args *ap); 91 #if defined(__DragonFly__) 92 static int hpfs_fsync (struct vop_fsync_args *ap); 93 #endif 94 static int hpfs_pathconf (struct vop_pathconf_args *ap); 95 96 #if defined(__DragonFly__) 97 98 /* 99 * hpfs_fsync(struct vnode *a_vp, int a_waitfor) 100 */ 101 static int 102 hpfs_fsync(struct vop_fsync_args *ap) 103 { 104 struct vnode *vp = ap->a_vp; 105 106 /* 107 * Flush all dirty buffers associated with a vnode. 108 */ 109 #ifdef DIAGNOSTIC 110 loop: 111 #endif 112 vfsync(vp, ap->a_waitfor, 0, NULL, NULL); 113 #ifdef DIAGNOSTIC 114 if (ap->a_waitfor == MNT_WAIT && !RB_EMPTY(&vp->v_rbdirty_tree)) { 115 vprint("hpfs_fsync: dirty", vp); 116 goto loop; 117 } 118 #endif 119 120 /* 121 * Write out the on-disc version of the vnode. 122 */ 123 return hpfs_update(VTOHP(vp)); 124 } 125 126 #endif 127 128 /* 129 * hpfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 130 * int a_fflag, struct ucred *a_cred) 131 */ 132 static int 133 hpfs_ioctl(struct vop_ioctl_args *ap) 134 { 135 struct vnode *vp = ap->a_vp; 136 struct hpfsnode *hp = VTOHP(vp); 137 int error; 138 139 kprintf("hpfs_ioctl(0x%x, 0x%lx, 0x%p, 0x%x): ", 140 hp->h_no, ap->a_command, ap->a_data, ap->a_fflag); 141 142 switch (ap->a_command) { 143 case HPFSIOCGEANUM: { 144 u_long eanum; 145 u_long passed; 146 struct ea *eap; 147 148 eanum = 0; 149 150 if (hp->h_fn.fn_ealen > 0) { 151 eap = (struct ea *)&(hp->h_fn.fn_int); 152 passed = 0; 153 154 while (passed < hp->h_fn.fn_ealen) { 155 156 kprintf("EAname: %s\n", EA_NAME(eap)); 157 158 eanum++; 159 passed += sizeof(struct ea) + 160 eap->ea_namelen + 1 + eap->ea_vallen; 161 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int + 162 passed); 163 } 164 error = 0; 165 } else { 166 error = ENOENT; 167 } 168 169 kprintf("%lu eas\n", eanum); 170 171 *(u_long *)ap->a_data = eanum; 172 173 break; 174 } 175 case HPFSIOCGEASZ: { 176 u_long eanum; 177 u_long passed; 178 struct ea *eap; 179 180 kprintf("EA%ld\n", *(u_long *)ap->a_data); 181 182 eanum = 0; 183 if (hp->h_fn.fn_ealen > 0) { 184 eap = (struct ea *)&(hp->h_fn.fn_int); 185 passed = 0; 186 187 error = ENOENT; 188 while (passed < hp->h_fn.fn_ealen) { 189 kprintf("EAname: %s\n", EA_NAME(eap)); 190 191 if (eanum == *(u_long *)ap->a_data) { 192 *(u_long *)ap->a_data = 193 eap->ea_namelen + 1 + 194 eap->ea_vallen; 195 196 error = 0; 197 break; 198 } 199 200 eanum++; 201 passed += sizeof(struct ea) + 202 eap->ea_namelen + 1 + eap->ea_vallen; 203 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int + 204 passed); 205 } 206 } else { 207 error = ENOENT; 208 } 209 210 break; 211 } 212 case HPFSIOCRDEA: { 213 u_long eanum; 214 u_long passed; 215 struct hpfs_rdea *rdeap; 216 struct ea *eap; 217 218 rdeap = (struct hpfs_rdea *)ap->a_data; 219 kprintf("EA%ld\n", rdeap->ea_no); 220 221 eanum = 0; 222 if (hp->h_fn.fn_ealen > 0) { 223 eap = (struct ea *)&(hp->h_fn.fn_int); 224 passed = 0; 225 226 error = ENOENT; 227 while (passed < hp->h_fn.fn_ealen) { 228 kprintf("EAname: %s\n", EA_NAME(eap)); 229 230 if (eanum == rdeap->ea_no) { 231 rdeap->ea_sz = eap->ea_namelen + 1 + 232 eap->ea_vallen; 233 copyout(EA_NAME(eap),rdeap->ea_data, 234 rdeap->ea_sz); 235 error = 0; 236 break; 237 } 238 239 eanum++; 240 passed += sizeof(struct ea) + 241 eap->ea_namelen + 1 + eap->ea_vallen; 242 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int + 243 passed); 244 } 245 } else { 246 error = ENOENT; 247 } 248 249 break; 250 } 251 default: 252 error = EOPNOTSUPP; 253 break; 254 } 255 return (error); 256 } 257 258 /* 259 * Map file offset to disk offset. 260 * 261 * hpfs_bmap(struct vnode *a_vp, off_t a_loffset, 262 * off_t *a_doffsetp, int *a_runp, int *a_runb) 263 */ 264 int 265 hpfs_bmap(struct vop_bmap_args *ap) 266 { 267 struct hpfsnode *hp = VTOHP(ap->a_vp); 268 int error; 269 daddr_t lbn; 270 daddr_t dbn; 271 272 if (ap->a_runb != NULL) 273 *ap->a_runb = 0; 274 if (ap->a_doffsetp == NULL) 275 return (0); 276 277 dprintf(("hpfs_bmap(0x%x, 0x%x): ",hp->h_no, ap->a_bn)); 278 279 lbn = ap->a_loffset >> DEV_BSHIFT; 280 KKASSERT(((int)ap->a_loffset & DEV_BMASK) == 0); 281 282 error = hpfs_hpbmap (hp, lbn, &dbn, ap->a_runp); 283 if (error || dbn == (daddr_t)-1) { 284 *ap->a_doffsetp = NOOFFSET; 285 } else { 286 *ap->a_doffsetp = (off_t)dbn << DEV_BSHIFT; 287 } 288 return (error); 289 } 290 291 /* 292 * hpfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 293 * struct ucred *a_cred) 294 */ 295 static int 296 hpfs_read(struct vop_read_args *ap) 297 { 298 struct vnode *vp = ap->a_vp; 299 struct hpfsnode *hp = VTOHP(vp); 300 struct uio *uio = ap->a_uio; 301 struct buf *bp; 302 u_int xfersz, toread; 303 u_int off; 304 daddr_t lbn, bn; 305 int resid; 306 int runl; 307 int error = 0; 308 309 resid = (int)szmin(uio->uio_resid, hp->h_fn.fn_size - uio->uio_offset); 310 311 dprintf(("hpfs_read(0x%x, off: %d resid: %d, segflg: %d): " 312 "[resid: 0x%lx]\n", 313 hp->h_no, (u_int32_t)uio->uio_offset, 314 uio->uio_resid, uio->uio_segflg, resid)); 315 316 while (resid) { 317 lbn = uio->uio_offset >> DEV_BSHIFT; 318 off = uio->uio_offset & (DEV_BSIZE - 1); 319 dprintf(("hpfs_read: resid: 0x%lx lbn: 0x%x off: 0x%x\n", 320 uio->uio_resid, lbn, off)); 321 error = hpfs_hpbmap(hp, lbn, &bn, &runl); 322 if (error) 323 return (error); 324 325 toread = min(off + resid, min(DFLTPHYS, (runl+1)*DEV_BSIZE)); 326 xfersz = (toread + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1); 327 dprintf(("hpfs_read: bn: 0x%x (0x%x) toread: 0x%x (0x%x)\n", 328 bn, runl, toread, xfersz)); 329 330 if (toread == 0) 331 break; 332 333 error = bread(hp->h_devvp, dbtodoff(bn), xfersz, &bp); 334 if (error) { 335 brelse(bp); 336 break; 337 } 338 339 error = uiomove(bp->b_data + off, (size_t)(toread - off), uio); 340 if(error) { 341 brelse(bp); 342 break; 343 } 344 brelse(bp); 345 resid -= toread; 346 } 347 dprintf(("hpfs_read: successful\n")); 348 return (error); 349 } 350 351 /* 352 * hpfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 353 * struct ucred *a_cred) 354 */ 355 static int 356 hpfs_write(struct vop_write_args *ap) 357 { 358 struct vnode *vp = ap->a_vp; 359 struct hpfsnode *hp = VTOHP(vp); 360 struct uio *uio = ap->a_uio; 361 struct buf *bp; 362 u_int xfersz, towrite; 363 u_int off; 364 daddr_t lbn, bn; 365 int runl; 366 int error = 0; 367 368 dprintf(("hpfs_write(0x%x, off: %d resid: %ld, segflg: %d):\n", 369 hp->h_no, (u_int32_t)uio->uio_offset, 370 uio->uio_resid, uio->uio_segflg)); 371 372 if (ap->a_ioflag & IO_APPEND) { 373 dprintf(("hpfs_write: APPEND mode\n")); 374 uio->uio_offset = hp->h_fn.fn_size; 375 } 376 if (uio->uio_offset + uio->uio_resid > hp->h_fn.fn_size) { 377 error = hpfs_extend (hp, uio->uio_offset + uio->uio_resid); 378 if (error) { 379 kprintf("hpfs_write: hpfs_extend FAILED %d\n", error); 380 return (error); 381 } 382 } 383 384 while (uio->uio_resid) { 385 lbn = uio->uio_offset >> DEV_BSHIFT; 386 off = uio->uio_offset & (DEV_BSIZE - 1); 387 dprintf(("hpfs_write: resid: 0x%lx lbn: 0x%x off: 0x%x\n", 388 uio->uio_resid, lbn, off)); 389 error = hpfs_hpbmap(hp, lbn, &bn, &runl); 390 if (error) 391 return (error); 392 393 towrite = szmin(off + uio->uio_resid, 394 min(DFLTPHYS, (runl+1)*DEV_BSIZE)); 395 xfersz = (towrite + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1); 396 dprintf(("hpfs_write: bn: 0x%x (0x%x) towrite: 0x%x (0x%x)\n", 397 bn, runl, towrite, xfersz)); 398 399 /* 400 * We do not have to issue a read-before-write if the xfer 401 * size does not cover the whole block. 402 * 403 * In the UIO_NOCOPY case, however, we are not overwriting 404 * anything and must do a read-before-write to fill in 405 * any missing pieces. 406 */ 407 if (off == 0 && towrite == xfersz && 408 uio->uio_segflg != UIO_NOCOPY) { 409 bp = getblk(hp->h_devvp, dbtodoff(bn), xfersz, 0, 0); 410 clrbuf(bp); 411 } else { 412 error = bread(hp->h_devvp, dbtodoff(bn), xfersz, &bp); 413 if (error) { 414 brelse(bp); 415 return (error); 416 } 417 } 418 419 error = uiomove(bp->b_data + off, (size_t)(towrite - off), uio); 420 if(error) { 421 brelse(bp); 422 return (error); 423 } 424 425 if (ap->a_ioflag & IO_SYNC) 426 bwrite(bp); 427 else 428 bawrite(bp); 429 } 430 431 dprintf(("hpfs_write: successful\n")); 432 return (0); 433 } 434 435 /* 436 * XXXXX do we need hpfsnode locking inside? 437 * 438 * hpfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 439 */ 440 static int 441 hpfs_getattr(struct vop_getattr_args *ap) 442 { 443 struct vnode *vp = ap->a_vp; 444 struct hpfsnode *hp = VTOHP(vp); 445 struct vattr *vap = ap->a_vap; 446 int error; 447 448 dprintf(("hpfs_getattr(0x%x):\n", hp->h_no)); 449 450 #if defined(__DragonFly__) 451 vap->va_fsid = dev2udev(hp->h_dev); 452 #else /* defined(__NetBSD__) */ 453 vap->va_fsid = ip->i_dev; 454 #endif 455 vap->va_fileid = hp->h_no; 456 vap->va_mode = hp->h_mode; 457 vap->va_nlink = 1; 458 vap->va_uid = hp->h_uid; 459 vap->va_gid = hp->h_gid; 460 vap->va_rmajor = VNOVAL; 461 vap->va_rminor = VNOVAL; 462 vap->va_size = hp->h_fn.fn_size; 463 vap->va_bytes = ((hp->h_fn.fn_size + DEV_BSIZE-1) & ~(DEV_BSIZE-1)) + 464 DEV_BSIZE; 465 466 if (!(hp->h_flag & H_PARVALID)) { 467 error = hpfs_validateparent(hp); 468 if (error) 469 return (error); 470 } 471 vap->va_atime = hpfstimetounix(hp->h_atime); 472 vap->va_mtime = hpfstimetounix(hp->h_mtime); 473 vap->va_ctime = hpfstimetounix(hp->h_ctime); 474 475 vap->va_flags = 0; 476 vap->va_gen = 0; 477 vap->va_blocksize = DEV_BSIZE; 478 vap->va_type = vp->v_type; 479 vap->va_filerev = 0; 480 481 return (0); 482 } 483 484 /* 485 * XXXXX do we need hpfsnode locking inside? 486 * 487 * hpfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred) 488 */ 489 static int 490 hpfs_setattr(struct vop_setattr_args *ap) 491 { 492 struct vnode *vp = ap->a_vp; 493 struct hpfsnode *hp = VTOHP(vp); 494 struct vattr *vap = ap->a_vap; 495 struct ucred *cred = ap->a_cred; 496 int error; 497 498 dprintf(("hpfs_setattr(0x%x):\n", hp->h_no)); 499 500 /* 501 * Check for unsettable attributes. 502 */ 503 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || 504 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 505 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) || 506 (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { 507 dprintf(("hpfs_setattr: changing nonsettable attr\n")); 508 return (EINVAL); 509 } 510 511 /* Can't change flags XXX Could be implemented */ 512 if (vap->va_flags != VNOVAL) { 513 kprintf("hpfs_setattr: FLAGS CANNOT BE SET\n"); 514 return (EINVAL); 515 } 516 517 /* Can't change uid/gid XXX Could be implemented */ 518 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) { 519 kprintf("hpfs_setattr: UID/GID CANNOT BE SET\n"); 520 return (EINVAL); 521 } 522 523 /* Can't change mode XXX Could be implemented */ 524 if (vap->va_mode != (mode_t)VNOVAL) { 525 kprintf("hpfs_setattr: MODE CANNOT BE SET\n"); 526 return (EINVAL); 527 } 528 529 /* Update times */ 530 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { 531 if (vp->v_mount->mnt_flag & MNT_RDONLY) 532 return (EROFS); 533 if (cred->cr_uid != hp->h_uid && 534 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) && 535 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 536 (error = VOP_EACCESS(vp, VWRITE, cred)))) 537 return (error); 538 if (vap->va_atime.tv_sec != VNOVAL) 539 hp->h_atime = vap->va_atime.tv_sec; 540 if (vap->va_mtime.tv_sec != VNOVAL) 541 hp->h_mtime = vap->va_mtime.tv_sec; 542 543 hp->h_flag |= H_PARCHANGE; 544 } 545 546 if (vap->va_size != VNOVAL) { 547 switch (vp->v_type) { 548 case VDIR: 549 return (EISDIR); 550 case VREG: 551 if (vp->v_mount->mnt_flag & MNT_RDONLY) 552 return (EROFS); 553 break; 554 default: 555 kprintf("hpfs_setattr: WRONG v_type\n"); 556 return (EINVAL); 557 } 558 559 if (vap->va_size < hp->h_fn.fn_size) { 560 #if defined(__DragonFly__) 561 error = vtruncbuf(vp, vap->va_size, DEV_BSIZE); 562 if (error) 563 return (error); 564 #else /* defined(__NetBSD__) */ 565 #error Need alternation for vtruncbuf() 566 #endif 567 error = hpfs_truncate(hp, vap->va_size); 568 if (error) 569 return (error); 570 571 } else if (vap->va_size > hp->h_fn.fn_size) { 572 #if defined(__DragonFly__) 573 vnode_pager_setsize(vp, vap->va_size); 574 #endif 575 error = hpfs_extend(hp, vap->va_size); 576 if (error) 577 return (error); 578 } 579 } 580 581 return (0); 582 } 583 584 /* 585 * Last reference to an node. If necessary, write or delete it. 586 * 587 * hpfs_inactive(struct vnode *a_vp) 588 */ 589 int 590 hpfs_inactive(struct vop_inactive_args *ap) 591 { 592 struct vnode *vp = ap->a_vp; 593 struct hpfsnode *hp = VTOHP(vp); 594 int error; 595 596 dprintf(("hpfs_inactive(0x%x): \n", hp->h_no)); 597 598 if (hp->h_flag & H_CHANGE) { 599 dprintf(("hpfs_inactive: node changed, update\n")); 600 error = hpfs_update (hp); 601 if (error) 602 return (error); 603 } 604 605 if (hp->h_flag & H_PARCHANGE) { 606 dprintf(("hpfs_inactive: parent node changed, update\n")); 607 error = hpfs_updateparent (hp); 608 if (error) 609 return (error); 610 } 611 612 if (prtactive && vp->v_sysref.refcnt > 1) 613 vprint("hpfs_inactive: pushing active", vp); 614 615 if (hp->h_flag & H_INVAL) { 616 #if defined(__DragonFly__) 617 vrecycle(vp); 618 #else /* defined(__NetBSD__) */ 619 vgone(vp); 620 #endif 621 return (0); 622 } 623 return (0); 624 } 625 626 /* 627 * Reclaim an inode so that it can be used for other purposes. 628 * 629 * hpfs_reclaim(struct vnode *a_vp) 630 */ 631 int 632 hpfs_reclaim(struct vop_reclaim_args *ap) 633 { 634 struct vnode *vp = ap->a_vp; 635 struct hpfsnode *hp = VTOHP(vp); 636 637 dprintf(("hpfs_reclaim(0x%x0): \n", hp->h_no)); 638 639 hpfs_hphashrem(hp); 640 641 /* Purge old data structures associated with the inode. */ 642 if (hp->h_devvp) { 643 vrele(hp->h_devvp); 644 hp->h_devvp = NULL; 645 } 646 647 vp->v_data = NULL; 648 649 FREE(hp, M_HPFSNO); 650 651 return (0); 652 } 653 654 /* 655 * hpfs_print(struct vnode *a_vp) 656 */ 657 static int 658 hpfs_print(struct vop_print_args *ap) 659 { 660 struct vnode *vp = ap->a_vp; 661 struct hpfsnode *hp = VTOHP(vp); 662 663 kprintf("tag VT_HPFS, ino 0x%x",hp->h_no); 664 lockmgr_printinfo(&vp->v_lock); 665 kprintf("\n"); 666 return (0); 667 } 668 669 /* 670 * Calculate the logical to physical mapping if not done already, 671 * then call the device strategy routine. 672 * 673 * In order to be able to swap to a file, the VOP_BMAP operation may not 674 * deadlock on memory. See hpfs_bmap() for details. XXXXXXX (not impl) 675 * 676 * hpfs_strategy(struct vnode *a_vp, struct bio *a_bio) 677 */ 678 int 679 hpfs_strategy(struct vop_strategy_args *ap) 680 { 681 struct bio *bio = ap->a_bio; 682 struct bio *nbio; 683 struct buf *bp = bio->bio_buf; 684 struct vnode *vp = ap->a_vp; 685 struct hpfsnode *hp; 686 int error; 687 688 dprintf(("hpfs_strategy(): \n")); 689 690 if (vp->v_type == VBLK || vp->v_type == VCHR) 691 panic("hpfs_strategy: spec"); 692 693 nbio = push_bio(bio); 694 if (nbio->bio_offset == NOOFFSET) { 695 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset, 696 NULL, NULL, bp->b_cmd); 697 if (error) { 698 kprintf("hpfs_strategy: VOP_BMAP FAILED %d\n", error); 699 bp->b_error = error; 700 bp->b_flags |= B_ERROR; 701 /* I/O was never started on nbio, must biodone(bio) */ 702 biodone(bio); 703 return (error); 704 } 705 if (nbio->bio_offset == NOOFFSET) 706 vfs_bio_clrbuf(bp); 707 } 708 if (nbio->bio_offset == NOOFFSET) { 709 /* I/O was never started on nbio, must biodone(bio) */ 710 biodone(bio); 711 return (0); 712 } 713 hp = VTOHP(ap->a_vp); 714 vn_strategy(hp->h_devvp, nbio); 715 return (0); 716 } 717 718 /* 719 * XXXXX do we need hpfsnode locking inside? 720 * 721 * hpfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 722 */ 723 int 724 hpfs_access(struct vop_access_args *ap) 725 { 726 struct vnode *vp = ap->a_vp; 727 struct hpfsnode *hp = VTOHP(vp); 728 729 dprintf(("hpfs_access(0x%x):\n", hp->h_no)); 730 return (vop_helper_access(ap, hp->h_uid, hp->h_gid, hp->h_mode, 0)); 731 } 732 733 static int 734 hpfs_de_uiomove(int *error, struct hpfsmount *hpmp, struct hpfsdirent *dep, 735 struct uio *uio) 736 { 737 char convname[HPFS_MAXFILENAME + 1]; 738 int i, success; 739 740 dprintf(("[no: 0x%x, size: %d, name: %2d:%.*s, flag: 0x%x] ", 741 dep->de_fnode, dep->de_size, dep->de_namelen, 742 dep->de_namelen, dep->de_name, dep->de_flag)); 743 744 /*strncpy(cde.d_name, dep->de_name, dep->de_namelen);*/ 745 for (i=0; i<dep->de_namelen; i++) 746 convname[i] = hpfs_d2u(hpmp, dep->de_name[i]); 747 convname[dep->de_namelen] = '\0'; 748 749 success = vop_write_dirent(error, uio, dep->de_fnode, 750 (dep->de_flag & DE_DIR) ? DT_DIR : DT_REG, 751 dep->de_namelen, convname); 752 753 dprintf(("[0x%lx] ", uio->uio_resid)); 754 return (success); 755 } 756 757 758 /* 759 * hpfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 760 * int *a_ncookies, off_t **cookies) 761 */ 762 int 763 hpfs_readdir(struct vop_readdir_args *ap) 764 { 765 struct vnode *vp = ap->a_vp; 766 struct hpfsnode *hp = VTOHP(vp); 767 struct hpfsmount *hpmp = hp->h_hpmp; 768 struct uio *uio = ap->a_uio; 769 int ncookies = 0, i, num, cnum; 770 int error = 0; 771 struct buf *bp; 772 struct dirblk *dp; 773 struct hpfsdirent *dep; 774 lsn_t olsn; 775 lsn_t lsn; 776 int level; 777 778 dprintf(("hpfs_readdir(0x%x, 0x%x, 0x%lx): ", 779 hp->h_no, (u_int32_t)uio->uio_offset, uio->uio_resid)); 780 781 /* 782 * As we need to fake up . and .., and the remaining directory structure 783 * can't be expressed in one off_t as well, we just increment uio_offset 784 * by 1 for each entry. 785 * 786 * num is the entry we need to start reporting 787 * cnum is the current entry 788 */ 789 if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) 790 return(EINVAL); 791 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0) 792 return (error); 793 794 num = uio->uio_offset; 795 cnum = 0; 796 797 if( num <= cnum ) { 798 dprintf((". faked, ")); 799 if (vop_write_dirent(&error, uio, hp->h_no, DT_DIR, 1, ".")) 800 goto done; 801 if (error) 802 goto done; 803 ncookies ++; 804 } 805 cnum++; 806 807 if( num <= cnum ) { 808 dprintf((".. faked, ")); 809 if (vop_write_dirent(&error, uio, hp->h_fn.fn_parent, DT_DIR, 2, "..")) 810 goto readdone; 811 if (error) 812 goto done; 813 ncookies ++; 814 } 815 cnum++; 816 817 lsn = ((alleaf_t *)hp->h_fn.fn_abd)->al_lsn; 818 819 olsn = 0; 820 level = 1; 821 822 dive: 823 dprintf(("[dive 0x%x] ", lsn)); 824 error = bread(hp->h_devvp, dbtodoff(lsn), D_BSIZE, &bp); 825 if (error) { 826 brelse(bp); 827 goto done; 828 } 829 830 dp = (struct dirblk *) bp->b_data; 831 if (dp->d_magic != D_MAGIC) { 832 kprintf("hpfs_readdir: MAGIC DOESN'T MATCH\n"); 833 brelse(bp); 834 error = EINVAL; 835 goto done; 836 } 837 838 dep = D_DIRENT(dp); 839 840 if (olsn) { 841 dprintf(("[restore 0x%x] ", olsn)); 842 843 while(!(dep->de_flag & DE_END) ) { 844 if((dep->de_flag & DE_DOWN) && 845 (olsn == DE_DOWNLSN(dep))) 846 break; 847 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen); 848 } 849 850 if((dep->de_flag & DE_DOWN) && (olsn == DE_DOWNLSN(dep))) { 851 if (dep->de_flag & DE_END) 852 goto blockdone; 853 854 if (!(dep->de_flag & DE_SPECIAL)) { 855 if (num <= cnum) { 856 if (hpfs_de_uiomove(&error, hpmp, dep, uio)) { 857 brelse(bp); 858 dprintf(("[resid] ")); 859 goto readdone; 860 } 861 if (error) { 862 brelse (bp); 863 goto done; 864 } 865 ncookies++; 866 } 867 cnum++; 868 } 869 870 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen); 871 } else { 872 kprintf("hpfs_readdir: ERROR! oLSN not found\n"); 873 brelse(bp); 874 error = EINVAL; 875 goto done; 876 } 877 } 878 879 olsn = 0; 880 881 while(!(dep->de_flag & DE_END)) { 882 if(dep->de_flag & DE_DOWN) { 883 lsn = DE_DOWNLSN(dep); 884 brelse(bp); 885 level++; 886 goto dive; 887 } 888 889 if (!(dep->de_flag & DE_SPECIAL)) { 890 if (num <= cnum) { 891 if (hpfs_de_uiomove(&error, hpmp, dep, uio)) { 892 brelse(bp); 893 dprintf(("[resid] ")); 894 goto readdone; 895 } 896 if (error) { 897 brelse (bp); 898 goto done; 899 } 900 ncookies++; 901 } 902 cnum++; 903 } 904 905 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen); 906 } 907 908 if(dep->de_flag & DE_DOWN) { 909 dprintf(("[enddive] ")); 910 lsn = DE_DOWNLSN(dep); 911 brelse(bp); 912 level++; 913 goto dive; 914 } 915 916 blockdone: 917 dprintf(("[EOB] ")); 918 olsn = lsn; 919 lsn = dp->d_parent; 920 brelse(bp); 921 level--; 922 923 dprintf(("[level %d] ", level)); 924 925 if (level > 0) 926 goto dive; /* undive really */ 927 928 if (ap->a_eofflag) { 929 dprintf(("[EOF] ")); 930 *ap->a_eofflag = 1; 931 } 932 933 readdone: 934 uio->uio_offset = cnum; 935 dprintf(("[readdone]\n")); 936 if (!error && ap->a_ncookies != NULL) { 937 off_t *cookies; 938 off_t *cookiep; 939 940 dprintf(("%d cookies, ",ncookies)); 941 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 942 panic("hpfs_readdir: unexpected uio from NFS server"); 943 MALLOC(cookies, off_t *, ncookies * sizeof(off_t), 944 M_TEMP, M_WAITOK); 945 for (cookiep = cookies, i=0; i < ncookies; i++) 946 *cookiep++ = ++num; 947 948 *ap->a_ncookies = ncookies; 949 *ap->a_cookies = cookies; 950 } 951 952 done: 953 vn_unlock(ap->a_vp); 954 return (error); 955 } 956 957 /* 958 * hpfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 959 * struct componentname *a_cnp) 960 */ 961 int 962 hpfs_lookup(struct vop_old_lookup_args *ap) 963 { 964 struct vnode *dvp = ap->a_dvp; 965 struct hpfsnode *dhp = VTOHP(dvp); 966 struct hpfsmount *hpmp = dhp->h_hpmp; 967 struct componentname *cnp = ap->a_cnp; 968 struct ucred *cred = cnp->cn_cred; 969 int error; 970 int nameiop = cnp->cn_nameiop; 971 int flags = cnp->cn_flags; 972 int lockparent = flags & CNP_LOCKPARENT; 973 #if HPFS_DEBUG 974 int wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 975 #endif 976 dprintf(("hpfs_lookup(0x%x, %s, %ld, %d, %d): \n", 977 dhp->h_no, cnp->cn_nameptr, cnp->cn_namelen, 978 lockparent, wantparent)); 979 980 if (nameiop != NAMEI_CREATE && nameiop != NAMEI_DELETE && nameiop != NAMEI_LOOKUP) { 981 kprintf("hpfs_lookup: LOOKUP, DELETE and CREATE are only supported\n"); 982 return (EOPNOTSUPP); 983 } 984 985 error = VOP_EACCESS(dvp, VEXEC, cred); 986 if(error) 987 return (error); 988 989 if( (cnp->cn_namelen == 1) && 990 !strncmp(cnp->cn_nameptr,".",1) ) { 991 dprintf(("hpfs_lookup(0x%x,...): . faked\n",dhp->h_no)); 992 993 vref(dvp); 994 *ap->a_vpp = dvp; 995 996 return (0); 997 } else if( (cnp->cn_namelen == 2) && 998 !strncmp(cnp->cn_nameptr,"..",2) && (flags & CNP_ISDOTDOT) ) { 999 dprintf(("hpfs_lookup(0x%x,...): .. faked (0x%x)\n", 1000 dhp->h_no, dhp->h_fn.fn_parent)); 1001 1002 VOP__UNLOCK(dvp, 0); 1003 1004 error = VFS_VGET(hpmp->hpm_mp, NULL, 1005 dhp->h_fn.fn_parent, ap->a_vpp); 1006 if (error) { 1007 VOP__LOCK(dvp, 0); 1008 return(error); 1009 } 1010 1011 if (lockparent && (error = VOP__LOCK(dvp, 0))) { 1012 vput( *(ap->a_vpp) ); 1013 return (error); 1014 } 1015 return (error); 1016 } else { 1017 struct buf *bp; 1018 struct hpfsdirent *dep; 1019 struct hpfsnode *hp; 1020 1021 error = hpfs_genlookupbyname(dhp, 1022 cnp->cn_nameptr, cnp->cn_namelen, &bp, &dep); 1023 if (error) { 1024 if (error == ENOENT && 1025 (nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME)) { 1026 if(!lockparent) 1027 VOP__UNLOCK(dvp, 0); 1028 return (EJUSTRETURN); 1029 } 1030 1031 return (error); 1032 } 1033 1034 dprintf(("hpfs_lookup: fnode: 0x%x, CPID: 0x%x\n", 1035 dep->de_fnode, dep->de_cpid)); 1036 1037 if (nameiop == NAMEI_DELETE) { 1038 error = VOP_EACCESS(dvp, VWRITE, cred); 1039 if (error) { 1040 brelse(bp); 1041 return (error); 1042 } 1043 } 1044 1045 if (dhp->h_no == dep->de_fnode) { 1046 brelse(bp); 1047 vref(dvp); 1048 *ap->a_vpp = dvp; 1049 return (0); 1050 } 1051 1052 error = VFS_VGET(hpmp->hpm_mp, NULL, dep->de_fnode, ap->a_vpp); 1053 if (error) { 1054 kprintf("hpfs_lookup: VFS_VGET FAILED %d\n", error); 1055 brelse(bp); 1056 return(error); 1057 } 1058 1059 hp = VTOHP(*ap->a_vpp); 1060 1061 hp->h_mtime = dep->de_mtime; 1062 hp->h_ctime = dep->de_ctime; 1063 hp->h_atime = dep->de_atime; 1064 bcopy(dep->de_name, hp->h_name, dep->de_namelen); 1065 hp->h_name[dep->de_namelen] = '\0'; 1066 hp->h_namelen = dep->de_namelen; 1067 hp->h_flag |= H_PARVALID; 1068 1069 brelse(bp); 1070 1071 if(!lockparent) 1072 VOP__UNLOCK(dvp, 0); 1073 } 1074 return (error); 1075 } 1076 1077 /* 1078 * hpfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 1079 * struct componentname *a_cnp) 1080 */ 1081 int 1082 hpfs_remove(struct vop_old_remove_args *ap) 1083 { 1084 int error; 1085 1086 dprintf(("hpfs_remove(0x%x, %s, %ld): \n", VTOHP(ap->a_vp)->h_no, 1087 ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen)); 1088 1089 if (ap->a_vp->v_type == VDIR) 1090 return (EPERM); 1091 1092 error = hpfs_removefnode (ap->a_dvp, ap->a_vp, ap->a_cnp); 1093 return (error); 1094 } 1095 1096 /* 1097 * hpfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 1098 * struct componentname *a_cnp, struct vattr *a_vap) 1099 */ 1100 int 1101 hpfs_create(struct vop_old_create_args *ap) 1102 { 1103 int error; 1104 1105 dprintf(("hpfs_create(0x%x, %s, %ld): \n", VTOHP(ap->a_dvp)->h_no, 1106 ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen)); 1107 1108 error = hpfs_makefnode (ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap); 1109 1110 return (error); 1111 } 1112 1113 /* 1114 * Return POSIX pathconf information applicable to NTFS filesystem 1115 * 1116 * hpfs_pathconf(struct vnode *a_vp, int a_name, t *a_retval) 1117 */ 1118 int 1119 hpfs_pathconf(struct vop_pathconf_args *ap) 1120 { 1121 switch (ap->a_name) { 1122 case _PC_LINK_MAX: 1123 *ap->a_retval = 1; 1124 return (0); 1125 case _PC_NAME_MAX: 1126 *ap->a_retval = HPFS_MAXFILENAME; 1127 return (0); 1128 case _PC_PATH_MAX: 1129 *ap->a_retval = PATH_MAX; 1130 return (0); 1131 case _PC_CHOWN_RESTRICTED: 1132 *ap->a_retval = 1; 1133 return (0); 1134 case _PC_NO_TRUNC: 1135 *ap->a_retval = 0; 1136 return (0); 1137 #if defined(__NetBSD__) 1138 case _PC_SYNC_IO: 1139 *ap->a_retval = 1; 1140 return (0); 1141 case _PC_FILESIZEBITS: 1142 *ap->a_retval = 32; 1143 return (0); 1144 #endif 1145 default: 1146 return (EINVAL); 1147 } 1148 /* NOTREACHED */ 1149 } 1150 1151 1152 /* 1153 * Global vfs data structures 1154 */ 1155 1156 struct vop_ops hpfs_vnode_vops = { 1157 .vop_default = vop_defaultop, 1158 .vop_getattr = hpfs_getattr, 1159 .vop_setattr = hpfs_setattr, 1160 .vop_inactive = hpfs_inactive, 1161 .vop_reclaim = hpfs_reclaim, 1162 .vop_print = hpfs_print, 1163 .vop_old_create = hpfs_create, 1164 .vop_old_remove = hpfs_remove, 1165 .vop_old_lookup = hpfs_lookup, 1166 .vop_access = hpfs_access, 1167 .vop_readdir = hpfs_readdir, 1168 .vop_fsync = hpfs_fsync, 1169 .vop_bmap = hpfs_bmap, 1170 .vop_getpages = vop_stdgetpages, 1171 .vop_putpages = vop_stdputpages, 1172 .vop_strategy = hpfs_strategy, 1173 .vop_read = hpfs_read, 1174 .vop_write = hpfs_write, 1175 .vop_ioctl = hpfs_ioctl, 1176 .vop_pathconf = hpfs_pathconf 1177 }; 1178 1179