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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 int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ 86 87 /* 88 * This is a noop, simply returning what one has been given. 89 */ 90 int 91 ntfs_bmap(ap) 92 struct vop_bmap_args /* { 93 struct vnode *a_vp; 94 daddr_t a_bn; 95 struct bufobj **a_bop; 96 daddr_t *a_bnp; 97 int *a_runp; 98 int *a_runb; 99 } */ *ap; 100 { 101 struct vnode *vp = ap->a_vp; 102 103 dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); 104 if (ap->a_bop != NULL) 105 *ap->a_bop = &vp->v_bufobj; 106 if (ap->a_bnp != NULL) 107 *ap->a_bnp = ap->a_bn; 108 if (ap->a_runp != NULL) 109 *ap->a_runp = 0; 110 if (ap->a_runb != NULL) 111 *ap->a_runb = 0; 112 return (0); 113 } 114 115 static int 116 ntfs_read(ap) 117 struct vop_read_args /* { 118 struct vnode *a_vp; 119 struct uio *a_uio; 120 int a_ioflag; 121 struct ucred *a_cred; 122 } */ *ap; 123 { 124 register struct vnode *vp = ap->a_vp; 125 register struct fnode *fp = VTOF(vp); 126 register struct ntnode *ip = FTONT(fp); 127 struct uio *uio = ap->a_uio; 128 struct ntfsmount *ntmp = ip->i_mp; 129 struct buf *bp; 130 daddr_t cn; 131 int resid, off, toread; 132 int error; 133 134 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)); 135 136 dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); 137 138 /* don't allow reading after end of file */ 139 if (uio->uio_offset > fp->f_size) 140 return (0); 141 142 resid = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 143 144 dprintf((", resid: %d\n", resid)); 145 146 error = 0; 147 while (resid) { 148 cn = ntfs_btocn(uio->uio_offset); 149 off = ntfs_btocnoff(uio->uio_offset); 150 151 toread = MIN(off + resid, ntfs_cntob(1)); 152 153 error = bread(vp, cn, ntfs_cntob(1), NOCRED, &bp); 154 if (error) { 155 brelse(bp); 156 break; 157 } 158 159 error = uiomove(bp->b_data + off, toread - off, uio); 160 if(error) { 161 brelse(bp); 162 break; 163 } 164 brelse(bp); 165 166 resid -= toread - off; 167 } 168 169 return (error); 170 } 171 172 static int 173 ntfs_getattr(ap) 174 struct vop_getattr_args /* { 175 struct vnode *a_vp; 176 struct vattr *a_vap; 177 struct ucred *a_cred; 178 struct thread *a_td; 179 } */ *ap; 180 { 181 register struct vnode *vp = ap->a_vp; 182 register struct fnode *fp = VTOF(vp); 183 register struct ntnode *ip = FTONT(fp); 184 register struct vattr *vap = ap->a_vap; 185 186 dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); 187 188 vap->va_fsid = dev2udev(ip->i_dev); 189 vap->va_fileid = ip->i_number; 190 vap->va_mode = ip->i_mp->ntm_mode; 191 vap->va_nlink = (ip->i_nlink || ip->i_flag & IN_LOADED ? ip->i_nlink : 1); 192 vap->va_uid = ip->i_mp->ntm_uid; 193 vap->va_gid = ip->i_mp->ntm_gid; 194 vap->va_rdev = NODEV; 195 vap->va_size = fp->f_size; 196 vap->va_bytes = fp->f_allocated; 197 vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); 198 vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); 199 vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); 200 vap->va_flags = ip->i_flag; 201 vap->va_gen = 0; 202 vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; 203 vap->va_type = vp->v_type; 204 vap->va_filerev = 0; 205 return (0); 206 } 207 208 /* 209 * Last reference to an ntnode. If necessary, write or delete it. 210 */ 211 int 212 ntfs_inactive(ap) 213 struct vop_inactive_args /* { 214 struct vnode *a_vp; 215 } */ *ap; 216 { 217 register struct vnode *vp = ap->a_vp; 218 #ifdef NTFS_DEBUG 219 register struct ntnode *ip = VTONT(vp); 220 #endif 221 222 dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 223 224 if (ntfs_prtactive && vrefcnt(vp) != 0) 225 vprint("ntfs_inactive: pushing active", vp); 226 227 /* XXX since we don't support any filesystem changes 228 * right now, nothing more needs to be done 229 */ 230 return (0); 231 } 232 233 /* 234 * Reclaim an fnode/ntnode so that it can be used for other purposes. 235 */ 236 int 237 ntfs_reclaim(ap) 238 struct vop_reclaim_args /* { 239 struct vnode *a_vp; 240 } */ *ap; 241 { 242 register struct vnode *vp = ap->a_vp; 243 register struct fnode *fp = VTOF(vp); 244 register struct ntnode *ip = FTONT(fp); 245 int error; 246 247 dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); 248 249 if (ntfs_prtactive && vrefcnt(vp) != 0) 250 vprint("ntfs_reclaim: pushing active", vp); 251 252 /* 253 * Destroy the vm object and flush associated pages. 254 */ 255 vnode_destroy_vobject(vp); 256 257 if ((error = ntfs_ntget(ip)) != 0) 258 return (error); 259 260 /* Purge old data structures associated with the inode. */ 261 ntfs_frele(fp); 262 ntfs_ntput(ip); 263 vp->v_data = NULL; 264 265 return (0); 266 } 267 268 /* 269 * Calculate the logical to physical mapping if not done already, 270 * then call the device strategy routine. 271 */ 272 int 273 ntfs_strategy(ap) 274 struct vop_strategy_args /* { 275 struct buf *a_bp; 276 } */ *ap; 277 { 278 register struct buf *bp = ap->a_bp; 279 register struct vnode *vp = ap->a_vp; 280 register struct fnode *fp = VTOF(vp); 281 register struct ntnode *ip = FTONT(fp); 282 struct ntfsmount *ntmp = ip->i_mp; 283 int error; 284 285 dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n", 286 (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno, 287 (u_int32_t)bp->b_lblkno)); 288 289 dprintf(("strategy: bcount: %d flags: 0x%x\n", 290 (u_int32_t)bp->b_bcount,bp->b_flags)); 291 292 if (bp->b_iocmd == BIO_READ) { 293 u_int32_t toread; 294 295 if (ntfs_cntob(bp->b_blkno) >= fp->f_size) { 296 clrbuf(bp); 297 error = 0; 298 } else { 299 toread = MIN(bp->b_bcount, 300 fp->f_size-ntfs_cntob(bp->b_blkno)); 301 dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", 302 toread,(u_int32_t)fp->f_size)); 303 304 error = ntfs_readattr(ntmp, ip, fp->f_attrtype, 305 fp->f_attrname, ntfs_cntob(bp->b_blkno), 306 toread, bp->b_data, NULL); 307 308 if (error) { 309 printf("ntfs_strategy: ntfs_readattr failed\n"); 310 bp->b_error = error; 311 bp->b_ioflags |= BIO_ERROR; 312 } 313 314 bzero(bp->b_data + toread, bp->b_bcount - toread); 315 } 316 } else { 317 size_t tmp; 318 u_int32_t towrite; 319 320 if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) { 321 printf("ntfs_strategy: CAN'T EXTEND FILE\n"); 322 bp->b_error = error = EFBIG; 323 bp->b_ioflags |= BIO_ERROR; 324 } else { 325 towrite = MIN(bp->b_bcount, 326 fp->f_size-ntfs_cntob(bp->b_blkno)); 327 dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", 328 towrite,(u_int32_t)fp->f_size)); 329 330 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 331 fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite, 332 bp->b_data, &tmp, NULL); 333 334 if (error) { 335 printf("ntfs_strategy: ntfs_writeattr fail\n"); 336 bp->b_error = error; 337 bp->b_ioflags |= BIO_ERROR; 338 } 339 } 340 } 341 bufdone(bp); 342 return (0); 343 } 344 345 static int 346 ntfs_write(ap) 347 struct vop_write_args /* { 348 struct vnode *a_vp; 349 struct uio *a_uio; 350 int a_ioflag; 351 struct ucred *a_cred; 352 } */ *ap; 353 { 354 register struct vnode *vp = ap->a_vp; 355 register struct fnode *fp = VTOF(vp); 356 register struct ntnode *ip = FTONT(fp); 357 struct uio *uio = ap->a_uio; 358 struct ntfsmount *ntmp = ip->i_mp; 359 u_int64_t towrite; 360 size_t written; 361 int error; 362 363 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)); 364 dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); 365 366 if (uio->uio_resid + uio->uio_offset > fp->f_size) { 367 printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); 368 return (EFBIG); 369 } 370 371 towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset); 372 373 dprintf((", towrite: %d\n",(u_int32_t)towrite)); 374 375 error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, 376 fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); 377 #ifdef NTFS_DEBUG 378 if (error) 379 printf("ntfs_write: ntfs_writeattr failed: %d\n", error); 380 #endif 381 382 return (error); 383 } 384 385 int 386 ntfs_access(ap) 387 struct vop_access_args /* { 388 struct vnode *a_vp; 389 int a_mode; 390 struct ucred *a_cred; 391 struct thread *a_td; 392 } */ *ap; 393 { 394 struct vnode *vp = ap->a_vp; 395 struct ntnode *ip = VTONT(vp); 396 mode_t mode = ap->a_mode; 397 #ifdef QUOTA 398 int error; 399 #endif 400 401 dprintf(("ntfs_access: %d\n",ip->i_number)); 402 403 /* 404 * Disallow write attempts on read-only filesystems; 405 * unless the file is a socket, fifo, or a block or 406 * character device resident on the filesystem. 407 */ 408 if (mode & VWRITE) { 409 switch ((int)vp->v_type) { 410 case VDIR: 411 case VLNK: 412 case VREG: 413 if (vp->v_mount->mnt_flag & MNT_RDONLY) 414 return (EROFS); 415 #ifdef QUOTA 416 if (error = getinoquota(ip)) 417 return (error); 418 #endif 419 break; 420 } 421 } 422 423 return (vaccess(vp->v_type, ip->i_mp->ntm_mode, ip->i_mp->ntm_uid, 424 ip->i_mp->ntm_gid, ap->a_mode, ap->a_cred, NULL)); 425 } 426 427 /* 428 * Open called. 429 * 430 * Nothing to do. 431 */ 432 /* ARGSUSED */ 433 static int 434 ntfs_open(ap) 435 struct vop_open_args /* { 436 struct vnode *a_vp; 437 int a_mode; 438 struct ucred *a_cred; 439 struct thread *a_td; 440 } */ *ap; 441 { 442 #ifdef NTFS_DEBUG 443 register struct vnode *vp = ap->a_vp; 444 register struct ntnode *ip = VTONT(vp); 445 446 printf("ntfs_open: %d\n",ip->i_number); 447 #endif 448 449 vnode_create_vobject(ap->a_vp, VTOF(ap->a_vp)->f_size, ap->a_td); 450 451 /* 452 * Files marked append-only must be opened for appending. 453 */ 454 455 return (0); 456 } 457 458 /* 459 * Close called. 460 * 461 * Update the times on the inode. 462 */ 463 /* ARGSUSED */ 464 static int 465 ntfs_close(ap) 466 struct vop_close_args /* { 467 struct vnode *a_vp; 468 int a_fflag; 469 struct ucred *a_cred; 470 struct thread *a_td; 471 } */ *ap; 472 { 473 #ifdef NTFS_DEBUG 474 register struct vnode *vp = ap->a_vp; 475 register struct ntnode *ip = VTONT(vp); 476 477 printf("ntfs_close: %d\n",ip->i_number); 478 #endif 479 480 return (0); 481 } 482 483 int 484 ntfs_readdir(ap) 485 struct vop_readdir_args /* { 486 struct vnode *a_vp; 487 struct uio *a_uio; 488 struct ucred *a_cred; 489 int *a_ncookies; 490 u_int **cookies; 491 } */ *ap; 492 { 493 register struct vnode *vp = ap->a_vp; 494 register struct fnode *fp = VTOF(vp); 495 register struct ntnode *ip = FTONT(fp); 496 struct uio *uio = ap->a_uio; 497 struct ntfsmount *ntmp = ip->i_mp; 498 int i, j, error = 0; 499 wchar c; 500 u_int32_t faked = 0, num; 501 int ncookies = 0; 502 struct dirent cde; 503 off_t off; 504 505 dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); 506 507 off = uio->uio_offset; 508 509 /* Simulate . in every dir except ROOT */ 510 if( ip->i_number != NTFS_ROOTINO ) { 511 struct dirent dot = { NTFS_ROOTINO, 512 sizeof(struct dirent), DT_DIR, 1, "." }; 513 514 if( uio->uio_offset < sizeof(struct dirent) ) { 515 dot.d_fileno = ip->i_number; 516 error = uiomove((char *)&dot,sizeof(struct dirent),uio); 517 if(error) 518 return (error); 519 520 ncookies ++; 521 } 522 } 523 524 /* Simulate .. in every dir including ROOT */ 525 if( uio->uio_offset < 2 * sizeof(struct dirent) ) { 526 struct dirent dotdot = { NTFS_ROOTINO, 527 sizeof(struct dirent), DT_DIR, 2, ".." }; 528 529 error = uiomove((char *)&dotdot,sizeof(struct dirent),uio); 530 if(error) 531 return (error); 532 533 ncookies ++; 534 } 535 536 faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; 537 num = uio->uio_offset / sizeof(struct dirent) - faked; 538 539 while( uio->uio_resid >= sizeof(struct dirent) ) { 540 struct attr_indexentry *iep; 541 542 error = ntfs_ntreaddir(ntmp, fp, num, &iep); 543 544 if(error) 545 return (error); 546 547 if( NULL == iep ) 548 break; 549 550 for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent)); 551 iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) 552 { 553 if(!ntfs_isnamepermitted(ntmp,iep)) 554 continue; 555 556 for(i=0, j=0; i<iep->ie_fnamelen; i++, j++) { 557 c = NTFS_U28(iep->ie_fname[i]); 558 if (c&0xFF00) 559 cde.d_name[j++] = (char)(c>>8); 560 cde.d_name[j] = (char)c&0xFF; 561 } 562 cde.d_name[j] = '\0'; 563 dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ", 564 num, cde.d_name, iep->ie_fnametype, 565 iep->ie_flag)); 566 cde.d_namlen = j; 567 cde.d_fileno = iep->ie_number; 568 cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG; 569 cde.d_reclen = sizeof(struct dirent); 570 dprintf(("%s\n", (cde.d_type == DT_DIR) ? "dir":"reg")); 571 572 error = uiomove((char *)&cde, sizeof(struct dirent), uio); 573 if(error) 574 return (error); 575 576 ncookies++; 577 num++; 578 } 579 } 580 581 dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", 582 ncookies,(u_int)(uio->uio_offset - off))); 583 dprintf(("ntfs_readdir: off: %d resid: %d\n", 584 (u_int32_t)uio->uio_offset,uio->uio_resid)); 585 586 if (!error && ap->a_ncookies != NULL) { 587 struct dirent* dpStart; 588 struct dirent* dp; 589 u_long *cookies; 590 u_long *cookiep; 591 592 ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); 593 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) 594 panic("ntfs_readdir: unexpected uio from NFS server"); 595 dpStart = (struct dirent *) 596 ((caddr_t)uio->uio_iov->iov_base - 597 (uio->uio_offset - off)); 598 MALLOC(cookies, u_long *, ncookies * sizeof(u_long), 599 M_TEMP, M_WAITOK); 600 for (dp = dpStart, cookiep = cookies, i=0; 601 i < ncookies; 602 dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) { 603 off += dp->d_reclen; 604 *cookiep++ = (u_int) off; 605 } 606 *ap->a_ncookies = ncookies; 607 *ap->a_cookies = cookies; 608 } 609 /* 610 if (ap->a_eofflag) 611 *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; 612 */ 613 return (error); 614 } 615 616 int 617 ntfs_lookup(ap) 618 struct vop_cachedlookup_args /* { 619 struct vnode *a_dvp; 620 struct vnode **a_vpp; 621 struct componentname *a_cnp; 622 } */ *ap; 623 { 624 register struct vnode *dvp = ap->a_dvp; 625 register struct ntnode *dip = VTONT(dvp); 626 struct ntfsmount *ntmp = dip->i_mp; 627 struct componentname *cnp = ap->a_cnp; 628 struct ucred *cred = cnp->cn_cred; 629 int error; 630 dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d\n", 631 (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, 632 dip->i_number)); 633 634 error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_thread); 635 if(error) 636 return (error); 637 638 if ((cnp->cn_flags & ISLASTCN) && 639 (dvp->v_mount->mnt_flag & MNT_RDONLY) && 640 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 641 return (EROFS); 642 643 if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { 644 dprintf(("ntfs_lookup: faking . directory in %d\n", 645 dip->i_number)); 646 647 VREF(dvp); 648 *ap->a_vpp = dvp; 649 error = 0; 650 } else if (cnp->cn_flags & ISDOTDOT) { 651 struct ntvattr *vap; 652 653 dprintf(("ntfs_lookup: faking .. directory in %d\n", 654 dip->i_number)); 655 656 error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); 657 if(error) 658 return (error); 659 660 VOP_UNLOCK(dvp,0,cnp->cn_thread); 661 dprintf(("ntfs_lookup: parentdir: %d\n", 662 vap->va_a_name->n_pnumber)); 663 error = VFS_VGET(ntmp->ntm_mountp, vap->va_a_name->n_pnumber, 664 LK_EXCLUSIVE, ap->a_vpp); 665 ntfs_ntvattrrele(vap); 666 if (error) { 667 vn_lock(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_thread); 668 return (error); 669 } 670 } else { 671 error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); 672 if (error) { 673 dprintf(("ntfs_ntlookupfile: returned %d\n", error)); 674 return (error); 675 } 676 677 dprintf(("ntfs_lookup: found ino: %d\n", 678 VTONT(*ap->a_vpp)->i_number)); 679 } 680 681 if (cnp->cn_flags & MAKEENTRY) 682 cache_enter(dvp, *ap->a_vpp, cnp); 683 684 return (error); 685 } 686 687 /* 688 * Flush the blocks of a file to disk. 689 * 690 * This function is worthless for vnodes that represent directories. Maybe we 691 * could just do a sync if they try an fsync on a directory file. 692 */ 693 static int 694 ntfs_fsync(ap) 695 struct vop_fsync_args /* { 696 struct vnode *a_vp; 697 struct ucred *a_cred; 698 int a_waitfor; 699 struct thread *a_td; 700 } */ *ap; 701 { 702 return (0); 703 } 704 705 /* 706 * Return POSIX pathconf information applicable to NTFS filesystem 707 */ 708 int 709 ntfs_pathconf(ap) 710 struct vop_pathconf_args *ap; 711 { 712 713 switch (ap->a_name) { 714 case _PC_LINK_MAX: 715 *ap->a_retval = 1; 716 return (0); 717 case _PC_NAME_MAX: 718 *ap->a_retval = NTFS_MAXFILENAME; 719 return (0); 720 case _PC_PATH_MAX: 721 *ap->a_retval = PATH_MAX; 722 return (0); 723 case _PC_CHOWN_RESTRICTED: 724 *ap->a_retval = 1; 725 return (0); 726 case _PC_NO_TRUNC: 727 *ap->a_retval = 0; 728 return (0); 729 default: 730 return (EINVAL); 731 } 732 /* NOTREACHED */ 733 } 734 735 int 736 ntfs_vptofh(ap) 737 struct vop_vptofh_args /* { 738 struct vnode *a_vp; 739 struct fid *a_fhp; 740 } */ *ap; 741 { 742 register struct ntnode *ntp; 743 register struct ntfid *ntfhp; 744 745 ddprintf(("ntfs_fhtovp(): %p\n", ap->a_vp)); 746 747 ntp = VTONT(ap->a_vp); 748 ntfhp = (struct ntfid *)ap->a_fhp; 749 ntfhp->ntfid_len = sizeof(struct ntfid); 750 ntfhp->ntfid_ino = ntp->i_number; 751 /* ntfhp->ntfid_gen = ntp->i_gen; */ 752 return (0); 753 } 754 755 /* 756 * Global vfs data structures 757 */ 758 struct vop_vector ntfs_vnodeops = { 759 .vop_default = &default_vnodeops, 760 761 .vop_access = ntfs_access, 762 .vop_bmap = ntfs_bmap, 763 .vop_cachedlookup = ntfs_lookup, 764 .vop_close = ntfs_close, 765 .vop_fsync = ntfs_fsync, 766 .vop_getattr = ntfs_getattr, 767 .vop_inactive = ntfs_inactive, 768 .vop_lookup = vfs_cache_lookup, 769 .vop_open = ntfs_open, 770 .vop_pathconf = ntfs_pathconf, 771 .vop_read = ntfs_read, 772 .vop_readdir = ntfs_readdir, 773 .vop_reclaim = ntfs_reclaim, 774 .vop_strategy = ntfs_strategy, 775 .vop_write = ntfs_write, 776 .vop_vptofh = ntfs_vptofh, 777 };
Cache object: 2836f33f78d020097716e5a95053e269
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