Annotation of sys/ntfs/ntfs_vnops.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ntfs_vnops.c,v 1.11 2007/06/01 23:52:38 deraadt Exp $ */
! 2: /* $NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1992, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to Berkeley by
! 9: * John Heidemann of the UCLA Ficus project.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: *
! 35: * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp
! 36: *
! 37: */
! 38:
! 39: #include <sys/cdefs.h>
! 40: #ifdef __KERNEL_RCSID
! 41: __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $");
! 42: #endif
! 43:
! 44: #include <sys/param.h>
! 45: #include <sys/systm.h>
! 46: #include <sys/kernel.h>
! 47: #include <sys/time.h>
! 48: #include <sys/stat.h>
! 49: #include <sys/vnode.h>
! 50: #include <sys/mount.h>
! 51: #include <sys/namei.h>
! 52: #include <sys/malloc.h>
! 53: #include <sys/buf.h>
! 54: #include <sys/dirent.h>
! 55:
! 56: #if !defined(__NetBSD__) && !defined(__OpenBSD__)
! 57: #include <vm/vm.h>
! 58: #endif
! 59:
! 60: #if defined(__FreeBSD__)
! 61: #include <vm/vnode_pager.h>
! 62: #endif
! 63:
! 64: #include <sys/sysctl.h>
! 65:
! 66:
! 67: /*#define NTFS_DEBUG 1*/
! 68: #if defined(__FreeBSD__) || defined(__NetBSD__)
! 69: #include <fs/ntfs/ntfs.h>
! 70: #include <fs/ntfs/ntfs_inode.h>
! 71: #include <fs/ntfs/ntfs_subr.h>
! 72: #include <miscfs/genfs/genfs.h>
! 73: #else
! 74: #include <ntfs/ntfs.h>
! 75: #include <ntfs/ntfs_inode.h>
! 76: #include <ntfs/ntfs_subr.h>
! 77: #endif
! 78:
! 79: #include <miscfs/specfs/specdev.h>
! 80:
! 81: #include <sys/unistd.h> /* for pathconf(2) constants */
! 82:
! 83: static int ntfs_bypass(struct vop_generic_args *ap);
! 84: static int ntfs_read(struct vop_read_args *);
! 85: static int ntfs_write(struct vop_write_args *ap);
! 86: static int ntfs_getattr(struct vop_getattr_args *ap);
! 87: static int ntfs_inactive(struct vop_inactive_args *ap);
! 88: static int ntfs_print(struct vop_print_args *ap);
! 89: static int ntfs_reclaim(struct vop_reclaim_args *ap);
! 90: static int ntfs_strategy(struct vop_strategy_args *ap);
! 91: static int ntfs_access(struct vop_access_args *ap);
! 92: static int ntfs_open(struct vop_open_args *ap);
! 93: static int ntfs_close(struct vop_close_args *ap);
! 94: static int ntfs_readdir(struct vop_readdir_args *ap);
! 95: static int ntfs_lookup(struct vop_lookup_args *ap);
! 96: static int ntfs_bmap(struct vop_bmap_args *ap);
! 97: #if defined(__FreeBSD__)
! 98: static int ntfs_getpages(struct vop_getpages_args *ap);
! 99: static int ntfs_putpages(struct vop_putpages_args *);
! 100: #endif
! 101: #if defined(__FreeBSD__) || defined(__OpenBSD__)
! 102: static int ntfs_fsync(struct vop_fsync_args *ap);
! 103: #endif
! 104: static int ntfs_pathconf(void *);
! 105:
! 106: int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
! 107:
! 108: #if defined(__FreeBSD__)
! 109: int
! 110: ntfs_getpages(ap)
! 111: struct vop_getpages_args *ap;
! 112: {
! 113: return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
! 114: ap->a_reqpage);
! 115: }
! 116:
! 117: int
! 118: ntfs_putpages(ap)
! 119: struct vop_putpages_args *ap;
! 120: {
! 121: return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
! 122: ap->a_sync, ap->a_rtvals);
! 123: }
! 124: #endif
! 125:
! 126: /*
! 127: * This is a noop, simply returning what one has been given.
! 128: */
! 129: int
! 130: ntfs_bmap(ap)
! 131: struct vop_bmap_args *ap;
! 132: {
! 133: dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
! 134: if (ap->a_vpp != NULL)
! 135: *ap->a_vpp = ap->a_vp;
! 136: if (ap->a_bnp != NULL)
! 137: *ap->a_bnp = ap->a_bn;
! 138: if (ap->a_runp != NULL)
! 139: *ap->a_runp = 0;
! 140: #if !defined(__NetBSD__) && !defined(__OpenBSD__)
! 141: if (ap->a_runb != NULL)
! 142: *ap->a_runb = 0;
! 143: #endif
! 144: return (0);
! 145: }
! 146:
! 147: static int
! 148: ntfs_read(ap)
! 149: struct vop_read_args *ap;
! 150: {
! 151: struct vnode *vp = ap->a_vp;
! 152: struct fnode *fp = VTOF(vp);
! 153: struct ntnode *ip = FTONT(fp);
! 154: struct uio *uio = ap->a_uio;
! 155: struct ntfsmount *ntmp = ip->i_mp;
! 156: u_int64_t toread;
! 157: int error;
! 158:
! 159: 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));
! 160:
! 161: dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
! 162:
! 163: /* don't allow reading after end of file */
! 164: if (uio->uio_offset > fp->f_size)
! 165: toread = 0;
! 166: else
! 167: toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset );
! 168:
! 169: dprintf((", toread: %d\n",(u_int32_t)toread));
! 170:
! 171: if (toread == 0)
! 172: return (0);
! 173:
! 174: error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
! 175: fp->f_attrname, uio->uio_offset, toread, NULL, uio);
! 176: if (error) {
! 177: printf("ntfs_read: ntfs_readattr failed: %d\n",error);
! 178: return (error);
! 179: }
! 180:
! 181: return (0);
! 182: }
! 183:
! 184: static int
! 185: ntfs_bypass(ap)
! 186: struct vop_generic_args *ap;
! 187: {
! 188: int error = ENOTTY;
! 189: dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
! 190: return (error);
! 191: }
! 192:
! 193:
! 194: static int
! 195: ntfs_getattr(ap)
! 196: struct vop_getattr_args *ap;
! 197: {
! 198: struct vnode *vp = ap->a_vp;
! 199: struct fnode *fp = VTOF(vp);
! 200: struct ntnode *ip = FTONT(fp);
! 201: struct vattr *vap = ap->a_vap;
! 202:
! 203: dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
! 204:
! 205: #if defined(__FreeBSD__)
! 206: vap->va_fsid = dev2udev(ip->i_dev);
! 207: #else /* NetBSD */
! 208: vap->va_fsid = ip->i_dev;
! 209: #endif
! 210: vap->va_fileid = ip->i_number;
! 211: vap->va_mode = ip->i_mp->ntm_mode;
! 212: vap->va_nlink = ip->i_nlink;
! 213: vap->va_uid = ip->i_mp->ntm_uid;
! 214: vap->va_gid = ip->i_mp->ntm_gid;
! 215: vap->va_rdev = 0; /* XXX UNODEV ? */
! 216: vap->va_size = fp->f_size;
! 217: vap->va_bytes = fp->f_allocated;
! 218: vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
! 219: vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
! 220: vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
! 221: vap->va_flags = ip->i_flag;
! 222: vap->va_gen = 0;
! 223: vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
! 224: vap->va_type = vp->v_type;
! 225: vap->va_filerev = 0;
! 226: return (0);
! 227: }
! 228:
! 229:
! 230: /*
! 231: * Last reference to an ntnode. If necessary, write or delete it.
! 232: */
! 233: int
! 234: ntfs_inactive(ap)
! 235: struct vop_inactive_args *ap;
! 236: {
! 237: struct vnode *vp = ap->a_vp;
! 238: #ifdef __OpenBSD__
! 239: struct proc *p = ap->a_p;
! 240: #endif
! 241: #ifdef NTFS_DEBUG
! 242: struct ntnode *ip = VTONT(vp);
! 243: #endif
! 244:
! 245: dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
! 246:
! 247: #ifdef DIAGNOSTIC
! 248: if (ntfs_prtactive && vp->v_usecount != 0)
! 249: vprint("ntfs_inactive: pushing active", vp);
! 250: #endif
! 251:
! 252: VOP__UNLOCK(vp, 0, p);
! 253:
! 254: /* XXX since we don't support any filesystem changes
! 255: * right now, nothing more needs to be done
! 256: */
! 257: return (0);
! 258: }
! 259:
! 260: /*
! 261: * Reclaim an fnode/ntnode so that it can be used for other purposes.
! 262: */
! 263: int
! 264: ntfs_reclaim(ap)
! 265: struct vop_reclaim_args *ap;
! 266: {
! 267: struct vnode *vp = ap->a_vp;
! 268: struct fnode *fp = VTOF(vp);
! 269: struct ntnode *ip = FTONT(fp);
! 270: #ifdef __OpenBSD__
! 271: struct proc *p = ap->a_p;
! 272: #endif
! 273: int error;
! 274:
! 275: dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
! 276:
! 277: #ifdef DIAGNOSTIC
! 278: if (ntfs_prtactive && vp->v_usecount != 0)
! 279: vprint("ntfs_reclaim: pushing active", vp);
! 280: #endif
! 281:
! 282: #ifndef __OpenBSD__
! 283: if ((error = ntfs_ntget(ip)) != 0)
! 284: #else
! 285: if ((error = ntfs_ntget(ip, p)) != 0)
! 286: #endif
! 287: return (error);
! 288:
! 289: /* Purge old data structures associated with the inode. */
! 290: cache_purge(vp);
! 291:
! 292: ntfs_frele(fp);
! 293: #ifndef __OpenBSD__
! 294: ntfs_ntput(ip);
! 295: #else
! 296: ntfs_ntput(ip, p);
! 297: #endif
! 298: vp->v_data = NULL;
! 299:
! 300: return (0);
! 301: }
! 302:
! 303: static int
! 304: ntfs_print(ap)
! 305: struct vop_print_args *ap;
! 306: {
! 307: struct ntnode *ip = VTONT(ap->a_vp);
! 308:
! 309: printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n",
! 310: ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink);
! 311:
! 312: return (0);
! 313: }
! 314:
! 315: /*
! 316: * Calculate the logical to physical mapping if not done already,
! 317: * then call the device strategy routine.
! 318: */
! 319: int
! 320: ntfs_strategy(ap)
! 321: struct vop_strategy_args *ap;
! 322: {
! 323: struct buf *bp = ap->a_bp;
! 324: struct vnode *vp = bp->b_vp;
! 325: struct fnode *fp = VTOF(vp);
! 326: struct ntnode *ip = FTONT(fp);
! 327: struct ntfsmount *ntmp = ip->i_mp;
! 328: int error;
! 329:
! 330: #ifdef __FreeBSD__
! 331: dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
! 332: (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
! 333: (u_int32_t)bp->b_lblkno));
! 334: #else
! 335: dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
! 336: (u_int32_t)bp->b_blkno,
! 337: (u_int32_t)bp->b_lblkno));
! 338: #endif
! 339:
! 340: dprintf(("strategy: bcount: %u flags: 0x%x\n",
! 341: (u_int32_t)bp->b_bcount,bp->b_flags));
! 342:
! 343: if (bp->b_flags & B_READ) {
! 344: u_int32_t toread;
! 345:
! 346: if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
! 347: clrbuf(bp);
! 348: error = 0;
! 349: } else {
! 350: toread = MIN(bp->b_bcount,
! 351: fp->f_size - ntfs_cntob(bp->b_blkno));
! 352: dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
! 353: toread,(u_int32_t)fp->f_size));
! 354:
! 355: error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
! 356: fp->f_attrname, ntfs_cntob(bp->b_blkno),
! 357: toread, bp->b_data, NULL);
! 358:
! 359: if (error) {
! 360: printf("ntfs_strategy: ntfs_readattr failed\n");
! 361: bp->b_error = error;
! 362: bp->b_flags |= B_ERROR;
! 363: }
! 364:
! 365: bzero(bp->b_data + toread, bp->b_bcount - toread);
! 366: }
! 367: } else {
! 368: size_t tmp;
! 369: u_int32_t towrite;
! 370:
! 371: if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
! 372: printf("ntfs_strategy: CAN'T EXTEND FILE\n");
! 373: bp->b_error = error = EFBIG;
! 374: bp->b_flags |= B_ERROR;
! 375: } else {
! 376: towrite = MIN(bp->b_bcount,
! 377: fp->f_size - ntfs_cntob(bp->b_blkno));
! 378: dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
! 379: towrite,(u_int32_t)fp->f_size));
! 380:
! 381: error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
! 382: fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
! 383: bp->b_data, &tmp, NULL);
! 384:
! 385: if (error) {
! 386: printf("ntfs_strategy: ntfs_writeattr fail\n");
! 387: bp->b_error = error;
! 388: bp->b_flags |= B_ERROR;
! 389: }
! 390: }
! 391: }
! 392: biodone(bp);
! 393: return (error);
! 394: }
! 395:
! 396: static int
! 397: ntfs_write(ap)
! 398: struct vop_write_args *ap;
! 399: {
! 400: struct vnode *vp = ap->a_vp;
! 401: struct fnode *fp = VTOF(vp);
! 402: struct ntnode *ip = FTONT(fp);
! 403: struct uio *uio = ap->a_uio;
! 404: struct ntfsmount *ntmp = ip->i_mp;
! 405: u_int64_t towrite;
! 406: size_t written;
! 407: int error;
! 408:
! 409: 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));
! 410: dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
! 411:
! 412: if (uio->uio_resid + uio->uio_offset > fp->f_size) {
! 413: printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
! 414: return (EFBIG);
! 415: }
! 416:
! 417: towrite = MIN(uio->uio_resid, fp->f_size - uio->uio_offset);
! 418:
! 419: dprintf((", towrite: %d\n",(u_int32_t)towrite));
! 420:
! 421: error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
! 422: fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
! 423: #ifdef NTFS_DEBUG
! 424: if (error)
! 425: printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
! 426: #endif
! 427:
! 428: return (error);
! 429: }
! 430:
! 431: int
! 432: ntfs_access(ap)
! 433: struct vop_access_args *ap;
! 434: {
! 435: struct vnode *vp = ap->a_vp;
! 436: struct ntnode *ip = VTONT(vp);
! 437: struct ucred *cred = ap->a_cred;
! 438: mode_t mask, mode = ap->a_mode;
! 439: gid_t *gp;
! 440: int i;
! 441:
! 442: dprintf(("ntfs_access: %d\n",ip->i_number));
! 443:
! 444: /*
! 445: * Disallow write attempts on read-only file systems;
! 446: * unless the file is a socket, fifo, or a block or
! 447: * character device resident on the file system.
! 448: */
! 449: if (mode & VWRITE) {
! 450: switch ((int)vp->v_type) {
! 451: case VDIR:
! 452: case VLNK:
! 453: case VREG:
! 454: if (vp->v_mount->mnt_flag & MNT_RDONLY)
! 455: return (EROFS);
! 456: break;
! 457: }
! 458: }
! 459:
! 460: /* Otherwise, user id 0 always gets access. */
! 461: if (cred->cr_uid == 0)
! 462: return (0);
! 463:
! 464: mask = 0;
! 465:
! 466: /* Otherwise, check the owner. */
! 467: if (cred->cr_uid == ip->i_mp->ntm_uid) {
! 468: if (mode & VEXEC)
! 469: mask |= S_IXUSR;
! 470: if (mode & VREAD)
! 471: mask |= S_IRUSR;
! 472: if (mode & VWRITE)
! 473: mask |= S_IWUSR;
! 474: return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
! 475: }
! 476:
! 477: /* Otherwise, check the groups. */
! 478: for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
! 479: if (ip->i_mp->ntm_gid == *gp) {
! 480: if (mode & VEXEC)
! 481: mask |= S_IXGRP;
! 482: if (mode & VREAD)
! 483: mask |= S_IRGRP;
! 484: if (mode & VWRITE)
! 485: mask |= S_IWGRP;
! 486: return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
! 487: }
! 488:
! 489: /* Otherwise, check everyone else. */
! 490: if (mode & VEXEC)
! 491: mask |= S_IXOTH;
! 492: if (mode & VREAD)
! 493: mask |= S_IROTH;
! 494: if (mode & VWRITE)
! 495: mask |= S_IWOTH;
! 496: return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
! 497: }
! 498:
! 499: /*
! 500: * Open called.
! 501: *
! 502: * Nothing to do.
! 503: */
! 504: /* ARGSUSED */
! 505: static int
! 506: ntfs_open(ap)
! 507: struct vop_open_args *ap;
! 508: {
! 509: #if NTFS_DEBUG
! 510: struct vnode *vp = ap->a_vp;
! 511: struct ntnode *ip = VTONT(vp);
! 512:
! 513: printf("ntfs_open: %d\n",ip->i_number);
! 514: #endif
! 515:
! 516: /*
! 517: * Files marked append-only must be opened for appending.
! 518: */
! 519:
! 520: return (0);
! 521: }
! 522:
! 523: /*
! 524: * Close called.
! 525: *
! 526: * Update the times on the inode.
! 527: */
! 528: /* ARGSUSED */
! 529: static int
! 530: ntfs_close(ap)
! 531: struct vop_close_args *ap;
! 532: {
! 533: #if NTFS_DEBUG
! 534: struct vnode *vp = ap->a_vp;
! 535: struct ntnode *ip = VTONT(vp);
! 536:
! 537: printf("ntfs_close: %d\n",ip->i_number);
! 538: #endif
! 539:
! 540: return (0);
! 541: }
! 542:
! 543: int
! 544: ntfs_readdir(ap)
! 545: struct vop_readdir_args *ap;
! 546: {
! 547: struct vnode *vp = ap->a_vp;
! 548: struct fnode *fp = VTOF(vp);
! 549: struct ntnode *ip = FTONT(fp);
! 550: struct uio *uio = ap->a_uio;
! 551: struct ntfsmount *ntmp = ip->i_mp;
! 552: int i, error = 0;
! 553: u_int32_t faked = 0, num;
! 554: int ncookies = 0;
! 555: struct dirent *cde;
! 556: off_t off;
! 557:
! 558: dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
! 559:
! 560: off = uio->uio_offset;
! 561:
! 562: MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK);
! 563:
! 564: /* Simulate . in every dir except ROOT */
! 565: if (ip->i_number != NTFS_ROOTINO
! 566: && uio->uio_offset < sizeof(struct dirent)) {
! 567: cde->d_fileno = ip->i_number;
! 568: cde->d_reclen = sizeof(struct dirent);
! 569: cde->d_type = DT_DIR;
! 570: cde->d_namlen = 1;
! 571: strncpy(cde->d_name, ".", 2);
! 572: error = uiomove((void *)cde, sizeof(struct dirent), uio);
! 573: if (error)
! 574: goto out;
! 575:
! 576: ncookies++;
! 577: }
! 578:
! 579: /* Simulate .. in every dir including ROOT */
! 580: if (uio->uio_offset < 2 * sizeof(struct dirent)) {
! 581: cde->d_fileno = NTFS_ROOTINO; /* XXX */
! 582: cde->d_reclen = sizeof(struct dirent);
! 583: cde->d_type = DT_DIR;
! 584: cde->d_namlen = 2;
! 585: strncpy(cde->d_name, "..", 3);
! 586:
! 587: error = uiomove((void *) cde, sizeof(struct dirent), uio);
! 588: if (error)
! 589: goto out;
! 590:
! 591: ncookies++;
! 592: }
! 593:
! 594: faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
! 595: num = uio->uio_offset / sizeof(struct dirent) - faked;
! 596:
! 597: while (uio->uio_resid >= sizeof(struct dirent)) {
! 598: struct attr_indexentry *iep;
! 599: char *fname;
! 600: size_t remains;
! 601: int sz;
! 602:
! 603: #ifndef __OpenBSD__
! 604: error = ntfs_ntreaddir(ntmp, fp, num, &iep);
! 605: #else
! 606: error = ntfs_ntreaddir(ntmp, fp, num, &iep, uio->uio_procp);
! 607: #endif
! 608: if (error)
! 609: goto out;
! 610:
! 611: if (NULL == iep)
! 612: break;
! 613:
! 614: for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
! 615: iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
! 616: {
! 617: if(!ntfs_isnamepermitted(ntmp,iep))
! 618: continue;
! 619:
! 620: remains = sizeof(cde->d_name) - 1;
! 621: fname = cde->d_name;
! 622: for(i=0; i<iep->ie_fnamelen; i++) {
! 623: sz = (*ntmp->ntm_wput)(fname, remains,
! 624: iep->ie_fname[i]);
! 625: fname += sz;
! 626: remains -= sz;
! 627: }
! 628: *fname = '\0';
! 629: dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
! 630: num, cde->d_name, iep->ie_fnametype,
! 631: iep->ie_flag));
! 632: cde->d_namlen = fname - (char *) cde->d_name;
! 633: cde->d_fileno = iep->ie_number;
! 634: cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
! 635: cde->d_reclen = sizeof(struct dirent);
! 636: dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg"));
! 637:
! 638: error = uiomove((void *)cde, sizeof(struct dirent), uio);
! 639: if (error)
! 640: goto out;
! 641:
! 642: ncookies++;
! 643: num++;
! 644: }
! 645: }
! 646:
! 647: dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
! 648: ncookies,(u_int)(uio->uio_offset - off)));
! 649: dprintf(("ntfs_readdir: off: %d resid: %d\n",
! 650: (u_int32_t)uio->uio_offset,uio->uio_resid));
! 651:
! 652: if (!error && ap->a_ncookies != NULL) {
! 653: struct dirent* dpStart;
! 654: struct dirent* dp;
! 655: #if defined(__FreeBSD__) || defined(__OpenBSD__)
! 656: u_long *cookies;
! 657: u_long *cookiep;
! 658: #else /* defined(__NetBSD__) */
! 659: off_t *cookies;
! 660: off_t *cookiep;
! 661: #endif
! 662:
! 663: dprintf(("ntfs_readdir: %d cookies\n",ncookies));
! 664: if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
! 665: panic("ntfs_readdir: unexpected uio from NFS server");
! 666: dpStart = (struct dirent *)
! 667: ((caddr_t)uio->uio_iov->iov_base -
! 668: (uio->uio_offset - off));
! 669: #if defined(__FreeBSD__)
! 670: MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
! 671: M_TEMP, M_WAITOK);
! 672: #else /* defined(__NetBSD__) */
! 673: cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
! 674: #endif
! 675: for (dp = dpStart, cookiep = cookies, i=0;
! 676: i < ncookies;
! 677: dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
! 678: off += dp->d_reclen;
! 679: *cookiep++ = (u_int) off;
! 680: }
! 681: *ap->a_ncookies = ncookies;
! 682: *ap->a_cookies = cookies;
! 683: }
! 684: /*
! 685: if (ap->a_eofflag)
! 686: *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
! 687: */
! 688: out:
! 689: FREE(cde, M_TEMP);
! 690: return (error);
! 691: }
! 692:
! 693: int
! 694: ntfs_lookup(ap)
! 695: struct vop_lookup_args *ap;
! 696: {
! 697: struct vnode *dvp = ap->a_dvp;
! 698: struct ntnode *dip = VTONT(dvp);
! 699: struct ntfsmount *ntmp = dip->i_mp;
! 700: struct componentname *cnp = ap->a_cnp;
! 701: struct ucred *cred = cnp->cn_cred;
! 702: int error;
! 703: int lockparent = cnp->cn_flags & LOCKPARENT;
! 704: #ifdef __OpenBSD__
! 705: struct proc *p = cnp->cn_proc;
! 706: #endif
! 707: #if NTFS_DEBUG
! 708: int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
! 709: #endif
! 710: dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
! 711: (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
! 712: dip->i_number, lockparent, wantparent));
! 713:
! 714: error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
! 715: if(error)
! 716: return (error);
! 717:
! 718: if ((cnp->cn_flags & ISLASTCN) &&
! 719: (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
! 720: (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
! 721: return (EROFS);
! 722:
! 723: #if defined(__NetBSD__) || defined(__OpenBSD__)
! 724: /*
! 725: * We now have a segment name to search for, and a directory
! 726: * to search.
! 727: *
! 728: * Before tediously performing a linear scan of the directory,
! 729: * check the name cache to see if the directory/name pair
! 730: * we are looking for is known already.
! 731: */
! 732: if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
! 733: return (error);
! 734: #endif
! 735:
! 736: if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
! 737: dprintf(("ntfs_lookup: faking . directory in %d\n",
! 738: dip->i_number));
! 739:
! 740: VREF(dvp);
! 741: *ap->a_vpp = dvp;
! 742: error = 0;
! 743: } else if (cnp->cn_flags & ISDOTDOT) {
! 744: struct ntvattr *vap;
! 745:
! 746: dprintf(("ntfs_lookup: faking .. directory in %d\n",
! 747: dip->i_number));
! 748:
! 749: VOP__UNLOCK(dvp, 0, p);
! 750: cnp->cn_flags |= PDIRUNLOCK;
! 751:
! 752: error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
! 753: if(error)
! 754: return (error);
! 755:
! 756: dprintf(("ntfs_lookup: parentdir: %d\n",
! 757: vap->va_a_name->n_pnumber));
! 758: error = VFS_VGET(ntmp->ntm_mountp,
! 759: vap->va_a_name->n_pnumber,ap->a_vpp);
! 760: ntfs_ntvattrrele(vap);
! 761: if (error) {
! 762: if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY, p) == 0)
! 763: cnp->cn_flags &= ~PDIRUNLOCK;
! 764: return (error);
! 765: }
! 766:
! 767: if (lockparent && (cnp->cn_flags & ISLASTCN)) {
! 768: error = VN_LOCK(dvp, LK_EXCLUSIVE, p);
! 769: if (error) {
! 770: vput( *(ap->a_vpp) );
! 771: return (error);
! 772: }
! 773: cnp->cn_flags &= ~PDIRUNLOCK;
! 774: }
! 775: } else {
! 776: #ifndef __OpenBSD__
! 777: error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
! 778: #else
! 779: error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp, p);
! 780: #endif
! 781: if (error) {
! 782: dprintf(("ntfs_ntlookupfile: returned %d\n", error));
! 783: return (error);
! 784: }
! 785:
! 786: dprintf(("ntfs_lookup: found ino: %d\n",
! 787: VTONT(*ap->a_vpp)->i_number));
! 788:
! 789: if(!lockparent || (cnp->cn_flags & ISLASTCN) == 0) {
! 790: VOP__UNLOCK(dvp, 0, p);
! 791: cnp->cn_flags |= PDIRUNLOCK;
! 792: }
! 793: }
! 794:
! 795: if (cnp->cn_flags & MAKEENTRY)
! 796: cache_enter(dvp, *ap->a_vpp, cnp);
! 797:
! 798: return (error);
! 799: }
! 800:
! 801: #if defined(__FreeBSD__) || defined(__OpenBSD__)
! 802: /*
! 803: * Flush the blocks of a file to disk.
! 804: *
! 805: * This function is worthless for vnodes that represent directories. Maybe we
! 806: * could just do a sync if they try an fsync on a directory file.
! 807: */
! 808: static int
! 809: ntfs_fsync(ap)
! 810: struct vop_fsync_args *ap;
! 811: {
! 812: return (0);
! 813: }
! 814: #endif
! 815:
! 816: /*
! 817: * Return POSIX pathconf information applicable to NTFS filesystem
! 818: */
! 819: static int
! 820: ntfs_pathconf(v)
! 821: void *v;
! 822: {
! 823: struct vop_pathconf_args *ap = v;
! 824:
! 825: switch (ap->a_name) {
! 826: case _PC_LINK_MAX:
! 827: *ap->a_retval = 1;
! 828: return (0);
! 829: case _PC_NAME_MAX:
! 830: *ap->a_retval = NTFS_MAXFILENAME;
! 831: return (0);
! 832: case _PC_PATH_MAX:
! 833: *ap->a_retval = PATH_MAX;
! 834: return (0);
! 835: case _PC_CHOWN_RESTRICTED:
! 836: *ap->a_retval = 1;
! 837: return (0);
! 838: case _PC_NO_TRUNC:
! 839: *ap->a_retval = 0;
! 840: return (0);
! 841: #ifdef __NetBSD__
! 842: case _PC_SYNC_IO:
! 843: *ap->a_retval = 1;
! 844: return (0);
! 845: case _PC_FILESIZEBITS:
! 846: *ap->a_retval = 64;
! 847: return (0);
! 848: #endif
! 849: default:
! 850: return (EINVAL);
! 851: }
! 852: /* NOTREACHED */
! 853: }
! 854:
! 855: /*
! 856: * Global vfs data structures
! 857: */
! 858: vop_t **ntfs_vnodeop_p;
! 859: #if defined(__FreeBSD__)
! 860: static
! 861: struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
! 862: { &vop_default_desc, (vop_t *)ntfs_bypass },
! 863:
! 864: { &vop_getattr_desc, (vop_t *)ntfs_getattr },
! 865: { &vop_inactive_desc, (vop_t *)ntfs_inactive },
! 866: { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
! 867: { &vop_print_desc, (vop_t *)ntfs_print },
! 868: { &vop_pathconf_desc, ntfs_pathconf },
! 869:
! 870: { &vop_islocked_desc, (vop_t *)vop_stdislocked },
! 871: { &vop_unlock_desc, (vop_t *)vop_stdunlock },
! 872: { &vop_lock_desc, (vop_t *)vop_stdlock },
! 873: { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
! 874: { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
! 875:
! 876: { &vop_access_desc, (vop_t *)ntfs_access },
! 877: { &vop_close_desc, (vop_t *)ntfs_close },
! 878: { &vop_open_desc, (vop_t *)ntfs_open },
! 879: { &vop_readdir_desc, (vop_t *)ntfs_readdir },
! 880: { &vop_fsync_desc, (vop_t *)ntfs_fsync },
! 881:
! 882: { &vop_bmap_desc, (vop_t *)ntfs_bmap },
! 883: { &vop_getpages_desc, (vop_t *) ntfs_getpages },
! 884: { &vop_putpages_desc, (vop_t *) ntfs_putpages },
! 885: { &vop_strategy_desc, (vop_t *)ntfs_strategy },
! 886: { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
! 887: { &vop_read_desc, (vop_t *)ntfs_read },
! 888: { &vop_write_desc, (vop_t *)ntfs_write },
! 889:
! 890: { NULL, NULL }
! 891: };
! 892:
! 893: static
! 894: struct vnodeopv_desc ntfs_vnodeop_opv_desc =
! 895: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
! 896:
! 897: VNODEOP_SET(ntfs_vnodeop_opv_desc);
! 898:
! 899: #elif defined(__OpenBSD__)
! 900: static
! 901: struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
! 902: { &vop_default_desc, (vop_t *)ntfs_bypass },
! 903:
! 904: { &vop_getattr_desc, (vop_t *)ntfs_getattr },
! 905: { &vop_inactive_desc, (vop_t *)ntfs_inactive },
! 906: { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
! 907: { &vop_print_desc, (vop_t *)ntfs_print },
! 908: { &vop_pathconf_desc, ntfs_pathconf },
! 909:
! 910: { &vop_islocked_desc, (vop_t *)vop_generic_islocked },
! 911: { &vop_unlock_desc, (vop_t *)vop_generic_unlock },
! 912: { &vop_lock_desc, (vop_t *)vop_generic_lock },
! 913: { &vop_lookup_desc, (vop_t *)ntfs_lookup },
! 914:
! 915: { &vop_access_desc, (vop_t *)ntfs_access },
! 916: { &vop_close_desc, (vop_t *)ntfs_close },
! 917: { &vop_open_desc, (vop_t *)ntfs_open },
! 918: { &vop_readdir_desc, (vop_t *)ntfs_readdir },
! 919: { &vop_fsync_desc, (vop_t *)ntfs_fsync },
! 920:
! 921: { &vop_bmap_desc, (vop_t *)ntfs_bmap },
! 922: { &vop_strategy_desc, (vop_t *)ntfs_strategy },
! 923: { &vop_bwrite_desc, (vop_t *)vop_generic_bwrite },
! 924: { &vop_read_desc, (vop_t *)ntfs_read },
! 925: { &vop_write_desc, (vop_t *)ntfs_write },
! 926:
! 927: { NULL, NULL }
! 928: };
! 929:
! 930: const struct vnodeopv_desc ntfs_vnodeop_opv_desc =
! 931: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
! 932:
! 933: #else /* !FreeBSD && !OpenBSD*/
! 934:
! 935: const struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
! 936: { &vop_default_desc, (vop_t *) ntfs_bypass },
! 937: { &vop_lookup_desc, (vop_t *) ntfs_lookup }, /* lookup */
! 938: { &vop_create_desc, genfs_eopnotsupp }, /* create */
! 939: { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */
! 940: { &vop_open_desc, (vop_t *) ntfs_open }, /* open */
! 941: { &vop_close_desc,(vop_t *) ntfs_close }, /* close */
! 942: { &vop_access_desc, (vop_t *) ntfs_access }, /* access */
! 943: { &vop_getattr_desc, (vop_t *) ntfs_getattr }, /* getattr */
! 944: { &vop_setattr_desc, genfs_eopnotsupp }, /* setattr */
! 945: { &vop_read_desc, (vop_t *) ntfs_read }, /* read */
! 946: { &vop_write_desc, (vop_t *) ntfs_write }, /* write */
! 947: { &vop_lease_desc, genfs_lease_check }, /* lease */
! 948: { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */
! 949: { &vop_ioctl_desc, genfs_enoioctl }, /* ioctl */
! 950: { &vop_poll_desc, genfs_poll }, /* poll */
! 951: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
! 952: { &vop_revoke_desc, genfs_revoke }, /* revoke */
! 953: { &vop_mmap_desc, genfs_mmap }, /* mmap */
! 954: { &vop_fsync_desc, genfs_fsync }, /* fsync */
! 955: { &vop_seek_desc, genfs_seek }, /* seek */
! 956: { &vop_remove_desc, genfs_eopnotsupp }, /* remove */
! 957: { &vop_link_desc, genfs_eopnotsupp }, /* link */
! 958: { &vop_rename_desc, genfs_eopnotsupp }, /* rename */
! 959: { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */
! 960: { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */
! 961: { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */
! 962: { &vop_readdir_desc, (vop_t *) ntfs_readdir }, /* readdir */
! 963: { &vop_readlink_desc, genfs_eopnotsupp }, /* readlink */
! 964: { &vop_abortop_desc, genfs_abortop }, /* abortop */
! 965: { &vop_inactive_desc, (vop_t *) ntfs_inactive }, /* inactive */
! 966: { &vop_reclaim_desc, (vop_t *) ntfs_reclaim }, /* reclaim */
! 967: { &vop_lock_desc, genfs_lock }, /* lock */
! 968: { &vop_unlock_desc, genfs_unlock }, /* unlock */
! 969: { &vop_bmap_desc, (vop_t *) ntfs_bmap }, /* bmap */
! 970: { &vop_strategy_desc, (vop_t *) ntfs_strategy }, /* strategy */
! 971: { &vop_print_desc, (vop_t *) ntfs_print }, /* print */
! 972: { &vop_islocked_desc, genfs_islocked }, /* islocked */
! 973: { &vop_pathconf_desc, ntfs_pathconf }, /* pathconf */
! 974: { &vop_advlock_desc, genfs_nullop }, /* advlock */
! 975: { &vop_blkatoff_desc, genfs_eopnotsupp }, /* blkatoff */
! 976: { &vop_valloc_desc, genfs_eopnotsupp }, /* valloc */
! 977: { &vop_reallocblks_desc, genfs_eopnotsupp }, /* reallocblks */
! 978: { &vop_vfree_desc, genfs_eopnotsupp }, /* vfree */
! 979: { &vop_truncate_desc, genfs_eopnotsupp }, /* truncate */
! 980: { &vop_update_desc, genfs_eopnotsupp }, /* update */
! 981: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
! 982: { &vop_getpages_desc, genfs_compat_getpages }, /* getpages */
! 983: { &vop_putpages_desc, genfs_putpages }, /* putpages */
! 984: { NULL, NULL }
! 985: };
! 986: const struct vnodeopv_desc ntfs_vnodeop_opv_desc =
! 987: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
! 988:
! 989: #endif
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