Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/fs/ntfs/ntfs_vnops.c
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1 /* $NetBSD: ntfs_vnops.c,v 1.23 1999/10/31 19:45:27 jdolecek Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * John Heidemann of the UCLA Ficus project. 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 * 4. 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 * $FreeBSD$ 35 * 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/time.h> 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/namei.h> 47 #include <sys/malloc.h> 48 #include <sys/bio.h> 49 #include <sys/buf.h> 50 #include <sys/dirent.h> 51 52 #include <vm/vm.h> 53 #include <vm/vm_param.h> 54 #include <vm/vm_page.h> 55 #include <vm/vm_object.h> 56 #include <vm/vm_pager.h> 57 #include <vm/vnode_pager.h> 58 #include <vm/vm_extern.h> 59 60 #include <sys/sysctl.h> 61 62 /*#define NTFS_DEBUG 1*/ 63 #include <fs/ntfs/ntfs.h> 64 #include <fs/ntfs/ntfs_inode.h> 65 #include <fs/ntfs/ntfs_subr.h> 66 67 #include <sys/unistd.h> /* for pathconf(2) constants */ 68 69 static vop_read_t ntfs_read; 70 static vop_write_t ntfs_write; 71 static vop_getattr_t ntfs_getattr; 72 static vop_inactive_t ntfs_inactive; 73 static vop_reclaim_t ntfs_reclaim; 74 static vop_bmap_t ntfs_bmap; 75 static vop_strategy_t ntfs_strategy; 76 static vop_access_t ntfs_access; 77 static vop_open_t ntfs_open; 78 static vop_close_t ntfs_close; 79 static vop_readdir_t ntfs_readdir; 80 static vop_cachedlookup_t ntfs_lookup; 81 static vop_fsync_t ntfs_fsync; 82 static vop_pathconf_t ntfs_pathconf; 83 static vop_vptofh_t ntfs_vptofh; 84 85 /* 86 * This is a noop, simply returning what one has been given. 87 */ 88 int 89 ntfs_bmap(ap) 90 struct vop_bmap_args /* { 91 struct vnode *a_vp; 92 daddr_t a_bn; 93 struct bufobj **a_bop; 94 daddr_t *a_bnp; 95 int *a_runp; 96 int *a_runb; 97 } */ *ap; 98 { 99 struct vnode *vp = ap->a_vp; 100 101 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 102 if (ap->a_bop != NULL) 103 *ap->a_bop = &vp->v_bufobj; 104 if (ap->a_bnp != NULL) 105 *ap->a_bnp = ap->a_bn; 106 if (ap->a_runp != NULL) 107 *ap->a_runp = 0; 108 if (ap->a_runb != NULL) 109 *ap->a_runb = 0; 110 return (0); 111 } 112 113 static int 114 ntfs_read(ap) 115 struct vop_read_args /* { 116 struct vnode *a_vp; 117 struct uio *a_uio; 118 int a_ioflag; 119 struct ucred *a_cred; 120 } */ *ap; 121 { 122 register struct vnode *vp = ap->a_vp; 123 register struct fnode *fp = VTOF(vp); 124 register struct ntnode *ip = FTONT(fp); 125 struct uio *uio = ap->a_uio; 126 struct ntfsmount *ntmp = ip->i_mp; 127 struct buf *bp; 128 daddr_t cn; 129 int resid, off, toread; 130 int error; 131 132 dprintf(("ntfs_read: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 133 134 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 135 136 /* don't allow reading after end of file */ 137 if (uio->uio_offset > fp->f_size) 138 return (0); 139 140 resid = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 141 142 dprintf((", resid: %d\n", resid)); 143 144 error = 0; 145 while (resid) { 146 cn = ntfs_btocn(uio->uio_offset); 147 off = ntfs_btocnoff(uio->uio_offset); 148 149 toread = MIN(off + resid, ntfs_cntob(1)); 150 151 error = bread(vp, cn, ntfs_cntob(1), NOCRED, &bp); 152 if (error) { 153 brelse(bp); 154 break; 155 } 156 157 error = uiomove(bp->b_data + off, toread - off, uio); 158 if(error) { 159 brelse(bp); 160 break; 161 } 162 brelse(bp); 163 164 resid -= toread - off; 165 } 166 167 return (error); 168 } 169 170 static int 171 ntfs_getattr(ap) 172 struct vop_getattr_args /* { 173 struct vnode *a_vp; 174 struct vattr *a_vap; 175 struct ucred *a_cred; 176 struct thread *a_td; 177 } */ *ap; 178 { 179 register struct vnode *vp = ap->a_vp; 180 register struct fnode *fp = VTOF(vp); 181 register struct ntnode *ip = FTONT(fp); 182 register struct vattr *vap = ap->a_vap; 183 184 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 185 186 vap->va_fsid = dev2udev(ip->i_dev); 187 vap->va_fileid = ip->i_number; 188 vap->va_mode = ip->i_mp->ntm_mode; 189 vap->va_nlink = (ip->i_nlink || ip->i_flag & IN_LOADED ? ip->i_nlink : 1); 190 vap->va_uid = ip->i_mp->ntm_uid; 191 vap->va_gid = ip->i_mp->ntm_gid; 192 vap->va_rdev = NODEV; 193 vap->va_size = fp->f_size; 194 vap->va_bytes = fp->f_allocated; 195 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 196 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 197 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 198 vap->va_flags = ip->i_flag; 199 vap->va_gen = 0; 200 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 201 vap->va_type = vp->v_type; 202 vap->va_filerev = 0; 203 return (0); 204 } 205 206 /* 207 * Last reference to an ntnode. If necessary, write or delete it. 208 */ 209 int 210 ntfs_inactive(ap) 211 struct vop_inactive_args /* { 212 struct vnode *a_vp; 213 } */ *ap; 214 { 215 #ifdef NTFS_DEBUG 216 register struct ntnode *ip = VTONT(ap->a_vp); 217 #endif 218 219 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", ap->a_vp, 220 ip->i_number)); 221 222 /* XXX since we don't support any filesystem changes 223 * right now, nothing more needs to be done 224 */ 225 return (0); 226 } 227 228 /* 229 * Reclaim an fnode/ntnode so that it can be used for other purposes. 230 */ 231 int 232 ntfs_reclaim(ap) 233 struct vop_reclaim_args /* { 234 struct vnode *a_vp; 235 } */ *ap; 236 { 237 register struct vnode *vp = ap->a_vp; 238 register struct fnode *fp = VTOF(vp); 239 register struct ntnode *ip = FTONT(fp); 240 int error; 241 242 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 243 244 /* 245 * Destroy the vm object and flush associated pages. 246 */ 247 vnode_destroy_vobject(vp); 248 249 if ((error = ntfs_ntget(ip)) != 0) 250 return (error); 251 252 /* Purge old data structures associated with the inode. */ 253 ntfs_frele(fp); 254 ntfs_ntput(ip); 255 vp->v_data = NULL; 256 257 return (0); 258 } 259 260 /* 261 * Calculate the logical to physical mapping if not done already, 262 * then call the device strategy routine. 263 */ 264 int 265 ntfs_strategy(ap) 266 struct vop_strategy_args /* { 267 struct buf *a_bp; 268 } */ *ap; 269 { 270 register struct buf *bp = ap->a_bp; 271 register struct vnode *vp = ap->a_vp; 272 register struct fnode *fp = VTOF(vp); 273 register struct ntnode *ip = FTONT(fp); 274 struct ntfsmount *ntmp = ip->i_mp; 275 int error; 276 277 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 278 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 279 (u_int32_t)bp->b_lblkno)); 280 281 dprintf(("strategy: bcount: %d flags: 0x%x\n", 282 (u_int32_t)bp->b_bcount,bp->b_flags)); 283 284 if (bp->b_iocmd == BIO_READ) { 285 u_int32_t toread; 286 287 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 288 clrbuf(bp); 289 error = 0; 290 } else { 291 toread = MIN(bp->b_bcount, 292 fp->f_size-ntfs_cntob(bp->b_blkno)); 293 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 294 toread,(u_int32_t)fp->f_size)); 295 296 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 297 fp->f_attrname, ntfs_cntob(bp->b_blkno), 298 toread, bp->b_data, NULL); 299 300 if (error) { 301 printf("ntfs_strategy: ntfs_readattr failed\n"); 302 bp->b_error = error; 303 bp->b_ioflags |= BIO_ERROR; 304 } 305 306 bzero(bp->b_data + toread, bp->b_bcount - toread); 307 } 308 } else { 309 size_t tmp; 310 u_int32_t towrite; 311 312 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 313 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 314 bp->b_error = error = EFBIG; 315 bp->b_ioflags |= BIO_ERROR; 316 } else { 317 towrite = MIN(bp->b_bcount, 318 fp->f_size-ntfs_cntob(bp->b_blkno)); 319 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 320 towrite,(u_int32_t)fp->f_size)); 321 322 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 323 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 324 bp->b_data, &tmp, NULL); 325 326 if (error) { 327 printf("ntfs_strategy: ntfs_writeattr fail\n"); 328 bp->b_error = error; 329 bp->b_ioflags |= BIO_ERROR; 330 } 331 } 332 } 333 bufdone(bp); 334 return (0); 335 } 336 337 static int 338 ntfs_write(ap) 339 struct vop_write_args /* { 340 struct vnode *a_vp; 341 struct uio *a_uio; 342 int a_ioflag; 343 struct ucred *a_cred; 344 } */ *ap; 345 { 346 register struct vnode *vp = ap->a_vp; 347 register struct fnode *fp = VTOF(vp); 348 register struct ntnode *ip = FTONT(fp); 349 struct uio *uio = ap->a_uio; 350 struct ntfsmount *ntmp = ip->i_mp; 351 u_int64_t towrite; 352 size_t written; 353 int error; 354 355 dprintf(("ntfs_write: ino: %d, off: %d resid: %d, segflg: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg)); 356 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 357 358 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 359 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 360 return (EFBIG); 361 } 362 363 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 364 365 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 366 367 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 368 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 369 #ifdef NTFS_DEBUG 370 if (error) 371 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 372 #endif 373 374 return (error); 375 } 376 377 int 378 ntfs_access(ap) 379 struct vop_access_args /* { 380 struct vnode *a_vp; 381 accmode_t a_accmode; 382 struct ucred *a_cred; 383 struct thread *a_td; 384 } */ *ap; 385 { 386 struct vnode *vp = ap->a_vp; 387 struct ntnode *ip = VTONT(vp); 388 accmode_t accmode = ap->a_accmode; 389 390 dprintf(("ntfs_access: %d\n",ip->i_number)); 391 392 /* 393 * Disallow write attempts on read-only filesystems; 394 * unless the file is a socket, fifo, or a block or 395 * character device resident on the filesystem. 396 */ 397 if (accmode & VWRITE) { 398 switch ((int)vp->v_type) { 399 case VDIR: 400 case VLNK: 401 case VREG: 402 if (vp->v_mount->mnt_flag & MNT_RDONLY) 403 return (EROFS); 404 break; 405 } 406 } 407 408 return (vaccess(vp->v_type, ip->i_mp->ntm_mode, ip->i_mp->ntm_uid, 409 ip->i_mp->ntm_gid, ap->a_accmode, ap->a_cred, NULL)); 410 } 411 412 /* 413 * Open called. 414 * 415 * Nothing to do. 416 */ 417 /* ARGSUSED */ 418 static int 419 ntfs_open(ap) 420 struct vop_open_args /* { 421 struct vnode *a_vp; 422 int a_mode; 423 struct ucred *a_cred; 424 struct thread *a_td; 425 } */ *ap; 426 { 427 #ifdef NTFS_DEBUG 428 register struct vnode *vp = ap->a_vp; 429 register struct ntnode *ip = VTONT(vp); 430 431 printf("ntfs_open: %d\n",ip->i_number); 432 #endif 433 434 vnode_create_vobject(ap->a_vp, VTOF(ap->a_vp)->f_size, ap->a_td); 435 436 /* 437 * Files marked append-only must be opened for appending. 438 */ 439 440 return (0); 441 } 442 443 /* 444 * Close called. 445 * 446 * Update the times on the inode. 447 */ 448 /* ARGSUSED */ 449 static int 450 ntfs_close(ap) 451 struct vop_close_args /* { 452 struct vnode *a_vp; 453 int a_fflag; 454 struct ucred *a_cred; 455 struct thread *a_td; 456 } */ *ap; 457 { 458 #ifdef NTFS_DEBUG 459 register struct vnode *vp = ap->a_vp; 460 register struct ntnode *ip = VTONT(vp); 461 462 printf("ntfs_close: %d\n",ip->i_number); 463 #endif 464 465 return (0); 466 } 467 468 int 469 ntfs_readdir(ap) 470 struct vop_readdir_args /* { 471 struct vnode *a_vp; 472 struct uio *a_uio; 473 struct ucred *a_cred; 474 int *a_ncookies; 475 u_int **cookies; 476 } */ *ap; 477 { 478 register struct vnode *vp = ap->a_vp; 479 register struct fnode *fp = VTOF(vp); 480 register struct ntnode *ip = FTONT(fp); 481 struct uio *uio = ap->a_uio; 482 struct ntfsmount *ntmp = ip->i_mp; 483 int i, j, error = 0; 484 char *c, tmpbuf[5]; 485 u_int32_t faked = 0, num; 486 int ncookies = 0; 487 struct dirent cde; 488 off_t off; 489 490 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 491 492 off = uio->uio_offset; 493 494 /* Simulate . in every dir except ROOT */ 495 if( ip->i_number != NTFS_ROOTINO ) { 496 struct dirent dot = { NTFS_ROOTINO, 497 sizeof(struct dirent), DT_DIR, 1, "." }; 498 499 if( uio->uio_offset < sizeof(struct dirent) ) { 500 dot.d_fileno = ip->i_number; 501 error = uiomove((char *)&dot,sizeof(struct dirent),uio); 502 if(error) 503 return (error); 504 505 ncookies ++; 506 } 507 } 508 509 /* Simulate .. in every dir including ROOT */ 510 if( uio->uio_offset < 2 * sizeof(struct dirent) ) { 511 struct dirent dotdot = { NTFS_ROOTINO, 512 sizeof(struct dirent), DT_DIR, 2, ".." }; 513 514 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio); 515 if(error) 516 return (error); 517 518 ncookies ++; 519 } 520 521 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 522 num = uio->uio_offset / sizeof(struct dirent) - faked; 523 524 while( uio->uio_resid >= sizeof(struct dirent) ) { 525 struct attr_indexentry *iep; 526 527 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 528 529 if(error) 530 return (error); 531 532 if( NULL == iep ) 533 break; 534 535 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 536 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 537 { 538 if(!ntfs_isnamepermitted(ntmp,iep)) 539 continue; 540 541 for(i=0, j=0; i<iep->ie_fnamelen; i++) { 542 c = NTFS_U28(iep->ie_fname[i]); 543 while (*c != '\0') 544 cde.d_name[j++] = *c++; 545 } 546 cde.d_name[j] = '\0'; 547 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 548 num, cde.d_name, iep->ie_fnametype, 549 iep->ie_flag)); 550 cde.d_namlen = j; 551 cde.d_fileno = iep->ie_number; 552 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 553 cde.d_reclen = sizeof(struct dirent); 554 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg")); 555 556 error = uiomove((char *)&cde, sizeof(struct dirent), uio); 557 if(error) 558 return (error); 559 560 ncookies++; 561 num++; 562 } 563 } 564 565 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 566 ncookies,(u_int)(uio->uio_offset - off))); 567 dprintf(("ntfs_readdir: off: %d resid: %d\n", 568 (u_int32_t)uio->uio_offset,uio->uio_resid)); 569 570 if (!error && ap->a_ncookies != NULL) { 571 struct dirent* dpStart; 572 struct dirent* dp; 573 u_long *cookies; 574 u_long *cookiep; 575 576 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 577 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 578 panic("ntfs_readdir: unexpected uio from NFS server"); 579 dpStart = (struct dirent *) 580 ((caddr_t)uio->uio_iov->iov_base - 581 (uio->uio_offset - off)); 582 cookies = malloc(ncookies * sizeof(u_long), 583 M_TEMP, M_WAITOK); 584 for (dp = dpStart, cookiep = cookies, i=0; 585 i < ncookies; 586 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 587 off += dp->d_reclen; 588 *cookiep++ = (u_int) off; 589 } 590 *ap->a_ncookies = ncookies; 591 *ap->a_cookies = cookies; 592 } 593 /* 594 if (ap->a_eofflag) 595 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 596 */ 597 return (error); 598 } 599 600 int 601 ntfs_lookup(ap) 602 struct vop_cachedlookup_args /* { 603 struct vnode *a_dvp; 604 struct vnode **a_vpp; 605 struct componentname *a_cnp; 606 } */ *ap; 607 { 608 register struct vnode *dvp = ap->a_dvp; 609 register struct ntnode *dip = VTONT(dvp); 610 struct ntfsmount *ntmp = dip->i_mp; 611 struct componentname *cnp = ap->a_cnp; 612 struct ucred *cred = cnp->cn_cred; 613 int error; 614 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d\n", 615 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 616 dip->i_number)); 617 618 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_thread); 619 if(error) 620 return (error); 621 622 if ((cnp->cn_flags & ISLASTCN) && 623 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 624 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 625 return (EROFS); 626 627 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 628 dprintf(("ntfs_lookup: faking . directory in %d\n", 629 dip->i_number)); 630 631 VREF(dvp); 632 *ap->a_vpp = dvp; 633 error = 0; 634 } else if (cnp->cn_flags & ISDOTDOT) { 635 struct ntvattr *vap; 636 637 dprintf(("ntfs_lookup: faking .. directory in %d\n", 638 dip->i_number)); 639 640 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 641 if(error) 642 return (error); 643 644 VOP_UNLOCK(dvp,0); 645 dprintf(("ntfs_lookup: parentdir: %d\n", 646 vap->va_a_name->n_pnumber)); 647 error = VFS_VGET(ntmp->ntm_mountp, vap->va_a_name->n_pnumber, 648 LK_EXCLUSIVE, ap->a_vpp); 649 ntfs_ntvattrrele(vap); 650 if (error) { 651 vn_lock(dvp,LK_EXCLUSIVE|LK_RETRY); 652 return (error); 653 } 654 } else { 655 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 656 if (error) { 657 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 658 return (error); 659 } 660 661 dprintf(("ntfs_lookup: found ino: %d\n", 662 VTONT(*ap->a_vpp)->i_number)); 663 } 664 665 if (cnp->cn_flags & MAKEENTRY) 666 cache_enter(dvp, *ap->a_vpp, cnp); 667 668 return (error); 669 } 670 671 /* 672 * Flush the blocks of a file to disk. 673 * 674 * This function is worthless for vnodes that represent directories. Maybe we 675 * could just do a sync if they try an fsync on a directory file. 676 */ 677 static int 678 ntfs_fsync(ap) 679 struct vop_fsync_args /* { 680 struct vnode *a_vp; 681 struct ucred *a_cred; 682 int a_waitfor; 683 struct thread *a_td; 684 } */ *ap; 685 { 686 return (0); 687 } 688 689 /* 690 * Return POSIX pathconf information applicable to NTFS filesystem 691 */ 692 int 693 ntfs_pathconf(ap) 694 struct vop_pathconf_args *ap; 695 { 696 697 switch (ap->a_name) { 698 case _PC_LINK_MAX: 699 *ap->a_retval = 1; 700 return (0); 701 case _PC_NAME_MAX: 702 *ap->a_retval = NTFS_MAXFILENAME; 703 return (0); 704 case _PC_PATH_MAX: 705 *ap->a_retval = PATH_MAX; 706 return (0); 707 case _PC_CHOWN_RESTRICTED: 708 *ap->a_retval = 1; 709 return (0); 710 case _PC_NO_TRUNC: 711 *ap->a_retval = 0; 712 return (0); 713 default: 714 return (EINVAL); 715 } 716 /* NOTREACHED */ 717 } 718 719 int 720 ntfs_vptofh(ap) 721 struct vop_vptofh_args /* { 722 struct vnode *a_vp; 723 struct fid *a_fhp; 724 } */ *ap; 725 { 726 register struct ntnode *ntp; 727 register struct ntfid *ntfhp; 728 729 ddprintf(("ntfs_fhtovp(): %p\n", ap->a_vp)); 730 731 ntp = VTONT(ap->a_vp); 732 ntfhp = (struct ntfid *)ap->a_fhp; 733 ntfhp->ntfid_len = sizeof(struct ntfid); 734 ntfhp->ntfid_ino = ntp->i_number; 735 /* ntfhp->ntfid_gen = ntp->i_gen; */ 736 return (0); 737 } 738 739 /* 740 * Global vfs data structures 741 */ 742 struct vop_vector ntfs_vnodeops = { 743 .vop_default = &default_vnodeops, 744 745 .vop_access = ntfs_access, 746 .vop_bmap = ntfs_bmap, 747 .vop_cachedlookup = ntfs_lookup, 748 .vop_close = ntfs_close, 749 .vop_fsync = ntfs_fsync, 750 .vop_getattr = ntfs_getattr, 751 .vop_inactive = ntfs_inactive, 752 .vop_lookup = vfs_cache_lookup, 753 .vop_open = ntfs_open, 754 .vop_pathconf = ntfs_pathconf, 755 .vop_read = ntfs_read, 756 .vop_readdir = ntfs_readdir, 757 .vop_reclaim = ntfs_reclaim, 758 .vop_strategy = ntfs_strategy, 759 .vop_write = ntfs_write, 760 .vop_vptofh = ntfs_vptofh, 761 };
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