Annotation of src/sys/fs/ntfs/ntfs_vnops.c, Revision 1.1.2.2
1.1.2.2 ! thorpej 1: /* $NetBSD: ntfs_vnops.c,v 1.1.2.1 2002/12/29 19:56:19 thorpej 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: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed by the University of
! 21: * California, Berkeley and its contributors.
! 22: * 4. Neither the name of the University nor the names of its contributors
! 23: * may be used to endorse or promote products derived from this software
! 24: * without specific prior written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 36: * SUCH DAMAGE.
! 37: *
! 38: * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp
! 39: *
! 40: */
! 41:
! 42: #include <sys/cdefs.h>
! 43: __KERNEL_RCSID(0, "$NetBSD: ntfs_vnops.c,v 1.1.2.1 2002/12/29 19:56:19 thorpej Exp $");
! 44:
! 45: #include <sys/param.h>
! 46: #include <sys/systm.h>
! 47: #include <sys/kernel.h>
! 48: #include <sys/time.h>
! 49: #include <sys/stat.h>
! 50: #include <sys/vnode.h>
! 51: #include <sys/mount.h>
! 52: #include <sys/namei.h>
! 53: #include <sys/malloc.h>
! 54: #include <sys/buf.h>
! 55: #include <sys/dirent.h>
! 56:
! 57: #if !defined(__NetBSD__)
! 58: #include <vm/vm.h>
! 59: #endif
! 60:
! 61: #if defined(__FreeBSD__)
! 62: #include <vm/vnode_pager.h>
! 63: #endif
! 64:
! 65: #include <sys/sysctl.h>
! 66:
! 67:
! 68: /*#define NTFS_DEBUG 1*/
! 69: #include <fs/ntfs/ntfs.h>
! 70: #include <fs/ntfs/ntfs_inode.h>
! 71: #include <fs/ntfs/ntfs_subr.h>
! 72: #include <miscfs/specfs/specdev.h>
! 73: #include <miscfs/genfs/genfs.h>
! 74:
! 75: #include <sys/unistd.h> /* for pathconf(2) constants */
! 76:
! 77: static int ntfs_bypass __P((struct vop_generic_args *ap));
! 78: static int ntfs_read __P((struct vop_read_args *));
! 79: static int ntfs_write __P((struct vop_write_args *ap));
! 80: static int ntfs_getattr __P((struct vop_getattr_args *ap));
! 81: static int ntfs_inactive __P((struct vop_inactive_args *ap));
! 82: static int ntfs_print __P((struct vop_print_args *ap));
! 83: static int ntfs_reclaim __P((struct vop_reclaim_args *ap));
! 84: static int ntfs_strategy __P((struct vop_strategy_args *ap));
! 85: static int ntfs_access __P((struct vop_access_args *ap));
! 86: static int ntfs_open __P((struct vop_open_args *ap));
! 87: static int ntfs_close __P((struct vop_close_args *ap));
! 88: static int ntfs_readdir __P((struct vop_readdir_args *ap));
! 89: static int ntfs_lookup __P((struct vop_lookup_args *ap));
! 90: static int ntfs_bmap __P((struct vop_bmap_args *ap));
! 91: #if defined(__FreeBSD__)
! 92: static int ntfs_getpages __P((struct vop_getpages_args *ap));
! 93: static int ntfs_putpages __P((struct vop_putpages_args *));
! 94: static int ntfs_fsync __P((struct vop_fsync_args *ap));
! 95: #endif
! 96: static int ntfs_pathconf __P((void *));
! 97:
! 98: int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */
! 99:
! 100: #if defined(__FreeBSD__)
! 101: int
! 102: ntfs_getpages(ap)
! 103: struct vop_getpages_args *ap;
! 104: {
! 105: return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
! 106: ap->a_reqpage);
! 107: }
! 108:
! 109: int
! 110: ntfs_putpages(ap)
! 111: struct vop_putpages_args *ap;
! 112: {
! 113: return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
! 114: ap->a_sync, ap->a_rtvals);
! 115: }
! 116: #endif
! 117:
! 118: /*
! 119: * This is a noop, simply returning what one has been given.
! 120: */
! 121: int
! 122: ntfs_bmap(ap)
! 123: struct vop_bmap_args /* {
! 124: struct vnode *a_vp;
! 125: daddr_t a_bn;
! 126: struct vnode **a_vpp;
! 127: daddr_t *a_bnp;
! 128: int *a_runp;
! 129: int *a_runb;
! 130: } */ *ap;
! 131: {
! 132: dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn));
! 133: if (ap->a_vpp != NULL)
! 134: *ap->a_vpp = ap->a_vp;
! 135: if (ap->a_bnp != NULL)
! 136: *ap->a_bnp = ap->a_bn;
! 137: if (ap->a_runp != NULL)
! 138: *ap->a_runp = 0;
! 139: #if !defined(__NetBSD__)
! 140: if (ap->a_runb != NULL)
! 141: *ap->a_runb = 0;
! 142: #endif
! 143: return (0);
! 144: }
! 145:
! 146: static int
! 147: ntfs_read(ap)
! 148: struct vop_read_args /* {
! 149: struct vnode *a_vp;
! 150: struct uio *a_uio;
! 151: int a_ioflag;
! 152: struct ucred *a_cred;
! 153: } */ *ap;
! 154: {
! 155: struct vnode *vp = ap->a_vp;
! 156: struct fnode *fp = VTOF(vp);
! 157: struct ntnode *ip = FTONT(fp);
! 158: struct uio *uio = ap->a_uio;
! 159: struct ntfsmount *ntmp = ip->i_mp;
! 160: u_int64_t toread;
! 161: int error;
! 162:
! 163: 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));
! 164:
! 165: dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size));
! 166:
! 167: /* don't allow reading after end of file */
! 168: if (uio->uio_offset > fp->f_size)
! 169: toread = 0;
! 170: else
! 171: toread = min( uio->uio_resid, fp->f_size - uio->uio_offset );
! 172:
! 173: dprintf((", toread: %d\n",(u_int32_t)toread));
! 174:
! 175: if (toread == 0)
! 176: return (0);
! 177:
! 178: error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
! 179: fp->f_attrname, uio->uio_offset, toread, NULL, uio);
! 180: if (error) {
! 181: printf("ntfs_read: ntfs_readattr failed: %d\n",error);
! 182: return (error);
! 183: }
! 184:
! 185: return (0);
! 186: }
! 187:
! 188: static int
! 189: ntfs_bypass(ap)
! 190: struct vop_generic_args /* {
! 191: struct vnodeop_desc *a_desc;
! 192: <other random data follows, presumably>
! 193: } */ *ap;
! 194: {
! 195: int error = ENOTTY;
! 196: dprintf(("ntfs_bypass: %s\n", ap->a_desc->vdesc_name));
! 197: return (error);
! 198: }
! 199:
! 200:
! 201: static int
! 202: ntfs_getattr(ap)
! 203: struct vop_getattr_args /* {
! 204: struct vnode *a_vp;
! 205: struct vattr *a_vap;
! 206: struct ucred *a_cred;
! 207: struct proc *a_p;
! 208: } */ *ap;
! 209: {
! 210: struct vnode *vp = ap->a_vp;
! 211: struct fnode *fp = VTOF(vp);
! 212: struct ntnode *ip = FTONT(fp);
! 213: struct vattr *vap = ap->a_vap;
! 214:
! 215: dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag));
! 216:
! 217: #if defined(__FreeBSD__)
! 218: vap->va_fsid = dev2udev(ip->i_dev);
! 219: #else /* NetBSD */
! 220: vap->va_fsid = ip->i_dev;
! 221: #endif
! 222: vap->va_fileid = ip->i_number;
! 223: vap->va_mode = ip->i_mp->ntm_mode;
! 224: vap->va_nlink = ip->i_nlink;
! 225: vap->va_uid = ip->i_mp->ntm_uid;
! 226: vap->va_gid = ip->i_mp->ntm_gid;
! 227: vap->va_rdev = 0; /* XXX UNODEV ? */
! 228: vap->va_size = fp->f_size;
! 229: vap->va_bytes = fp->f_allocated;
! 230: vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access);
! 231: vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write);
! 232: vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create);
! 233: vap->va_flags = ip->i_flag;
! 234: vap->va_gen = 0;
! 235: vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps;
! 236: vap->va_type = vp->v_type;
! 237: vap->va_filerev = 0;
! 238: return (0);
! 239: }
! 240:
! 241:
! 242: /*
! 243: * Last reference to an ntnode. If necessary, write or delete it.
! 244: */
! 245: int
! 246: ntfs_inactive(ap)
! 247: struct vop_inactive_args /* {
! 248: struct vnode *a_vp;
! 249: } */ *ap;
! 250: {
! 251: struct vnode *vp = ap->a_vp;
! 252: #ifdef NTFS_DEBUG
! 253: struct ntnode *ip = VTONT(vp);
! 254: #endif
! 255:
! 256: dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number));
! 257:
! 258: if (ntfs_prtactive && vp->v_usecount != 0)
! 259: vprint("ntfs_inactive: pushing active", vp);
! 260:
! 261: VOP__UNLOCK(vp, 0, ap->a_p);
! 262:
! 263: /* XXX since we don't support any filesystem changes
! 264: * right now, nothing more needs to be done
! 265: */
! 266: return (0);
! 267: }
! 268:
! 269: /*
! 270: * Reclaim an fnode/ntnode so that it can be used for other purposes.
! 271: */
! 272: int
! 273: ntfs_reclaim(ap)
! 274: struct vop_reclaim_args /* {
! 275: struct vnode *a_vp;
! 276: } */ *ap;
! 277: {
! 278: struct vnode *vp = ap->a_vp;
! 279: struct fnode *fp = VTOF(vp);
! 280: struct ntnode *ip = FTONT(fp);
! 281: int error;
! 282:
! 283: dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number));
! 284:
! 285: if (ntfs_prtactive && vp->v_usecount != 0)
! 286: vprint("ntfs_reclaim: pushing active", vp);
! 287:
! 288: if ((error = ntfs_ntget(ip)) != 0)
! 289: return (error);
! 290:
! 291: /* Purge old data structures associated with the inode. */
! 292: cache_purge(vp);
! 293: if (ip->i_devvp) {
! 294: vrele(ip->i_devvp);
! 295: ip->i_devvp = NULL;
! 296: }
! 297:
! 298: ntfs_frele(fp);
! 299: ntfs_ntput(ip);
! 300: vp->v_data = NULL;
! 301:
! 302: return (0);
! 303: }
! 304:
! 305: static int
! 306: ntfs_print(ap)
! 307: struct vop_print_args /* {
! 308: struct vnode *a_vp;
! 309: } */ *ap;
! 310: {
! 311: return (0);
! 312: }
! 313:
! 314: /*
! 315: * Calculate the logical to physical mapping if not done already,
! 316: * then call the device strategy routine.
! 317: */
! 318: int
! 319: ntfs_strategy(ap)
! 320: struct vop_strategy_args /* {
! 321: struct buf *a_bp;
! 322: } */ *ap;
! 323: {
! 324: struct buf *bp = ap->a_bp;
! 325: struct vnode *vp = bp->b_vp;
! 326: struct fnode *fp = VTOF(vp);
! 327: struct ntnode *ip = FTONT(fp);
! 328: struct ntfsmount *ntmp = ip->i_mp;
! 329: int error;
! 330:
! 331: #ifdef __FreeBSD__
! 332: dprintf(("ntfs_strategy: offset: %d, blkno: %d, lblkno: %d\n",
! 333: (u_int32_t)bp->b_offset,(u_int32_t)bp->b_blkno,
! 334: (u_int32_t)bp->b_lblkno));
! 335: #else
! 336: dprintf(("ntfs_strategy: blkno: %d, lblkno: %d\n",
! 337: (u_int32_t)bp->b_blkno,
! 338: (u_int32_t)bp->b_lblkno));
! 339: #endif
! 340:
! 341: dprintf(("strategy: bcount: %d flags: 0x%lx\n",
! 342: (u_int32_t)bp->b_bcount,bp->b_flags));
! 343:
! 344: if (bp->b_flags & B_READ) {
! 345: u_int32_t toread;
! 346:
! 347: if (ntfs_cntob(bp->b_blkno) >= fp->f_size) {
! 348: clrbuf(bp);
! 349: error = 0;
! 350: } else {
! 351: toread = min(bp->b_bcount,
! 352: fp->f_size-ntfs_cntob(bp->b_blkno));
! 353: dprintf(("ntfs_strategy: toread: %d, fsize: %d\n",
! 354: toread,(u_int32_t)fp->f_size));
! 355:
! 356: error = ntfs_readattr(ntmp, ip, fp->f_attrtype,
! 357: fp->f_attrname, ntfs_cntob(bp->b_blkno),
! 358: toread, bp->b_data, NULL);
! 359:
! 360: if (error) {
! 361: printf("ntfs_strategy: ntfs_readattr failed\n");
! 362: bp->b_error = error;
! 363: bp->b_flags |= B_ERROR;
! 364: }
! 365:
! 366: bzero(bp->b_data + toread, bp->b_bcount - toread);
! 367: }
! 368: } else {
! 369: size_t tmp;
! 370: u_int32_t towrite;
! 371:
! 372: if (ntfs_cntob(bp->b_blkno) + bp->b_bcount >= fp->f_size) {
! 373: printf("ntfs_strategy: CAN'T EXTEND FILE\n");
! 374: bp->b_error = error = EFBIG;
! 375: bp->b_flags |= B_ERROR;
! 376: } else {
! 377: towrite = min(bp->b_bcount,
! 378: fp->f_size-ntfs_cntob(bp->b_blkno));
! 379: dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n",
! 380: towrite,(u_int32_t)fp->f_size));
! 381:
! 382: error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
! 383: fp->f_attrname, ntfs_cntob(bp->b_blkno),towrite,
! 384: bp->b_data, &tmp, NULL);
! 385:
! 386: if (error) {
! 387: printf("ntfs_strategy: ntfs_writeattr fail\n");
! 388: bp->b_error = error;
! 389: bp->b_flags |= B_ERROR;
! 390: }
! 391: }
! 392: }
! 393: biodone(bp);
! 394: return (error);
! 395: }
! 396:
! 397: static int
! 398: ntfs_write(ap)
! 399: struct vop_write_args /* {
! 400: struct vnode *a_vp;
! 401: struct uio *a_uio;
! 402: int a_ioflag;
! 403: struct ucred *a_cred;
! 404: } */ *ap;
! 405: {
! 406: struct vnode *vp = ap->a_vp;
! 407: struct fnode *fp = VTOF(vp);
! 408: struct ntnode *ip = FTONT(fp);
! 409: struct uio *uio = ap->a_uio;
! 410: struct ntfsmount *ntmp = ip->i_mp;
! 411: u_int64_t towrite;
! 412: size_t written;
! 413: int error;
! 414:
! 415: 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));
! 416: dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size));
! 417:
! 418: if (uio->uio_resid + uio->uio_offset > fp->f_size) {
! 419: printf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n");
! 420: return (EFBIG);
! 421: }
! 422:
! 423: towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset);
! 424:
! 425: dprintf((", towrite: %d\n",(u_int32_t)towrite));
! 426:
! 427: error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype,
! 428: fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio);
! 429: #ifdef NTFS_DEBUG
! 430: if (error)
! 431: printf("ntfs_write: ntfs_writeattr failed: %d\n", error);
! 432: #endif
! 433:
! 434: return (error);
! 435: }
! 436:
! 437: int
! 438: ntfs_access(ap)
! 439: struct vop_access_args /* {
! 440: struct vnode *a_vp;
! 441: int a_mode;
! 442: struct ucred *a_cred;
! 443: struct proc *a_p;
! 444: } */ *ap;
! 445: {
! 446: struct vnode *vp = ap->a_vp;
! 447: struct ntnode *ip = VTONT(vp);
! 448: struct ucred *cred = ap->a_cred;
! 449: mode_t mask, mode = ap->a_mode;
! 450: gid_t *gp;
! 451: int i;
! 452: #ifdef QUOTA
! 453: int error;
! 454: #endif
! 455:
! 456: dprintf(("ntfs_access: %d\n",ip->i_number));
! 457:
! 458: /*
! 459: * Disallow write attempts on read-only file systems;
! 460: * unless the file is a socket, fifo, or a block or
! 461: * character device resident on the file system.
! 462: */
! 463: if (mode & VWRITE) {
! 464: switch ((int)vp->v_type) {
! 465: case VDIR:
! 466: case VLNK:
! 467: case VREG:
! 468: if (vp->v_mount->mnt_flag & MNT_RDONLY)
! 469: return (EROFS);
! 470: #ifdef QUOTA
! 471: if (error = getinoquota(ip))
! 472: return (error);
! 473: #endif
! 474: break;
! 475: }
! 476: }
! 477:
! 478: /* Otherwise, user id 0 always gets access. */
! 479: if (cred->cr_uid == 0)
! 480: return (0);
! 481:
! 482: mask = 0;
! 483:
! 484: /* Otherwise, check the owner. */
! 485: if (cred->cr_uid == ip->i_mp->ntm_uid) {
! 486: if (mode & VEXEC)
! 487: mask |= S_IXUSR;
! 488: if (mode & VREAD)
! 489: mask |= S_IRUSR;
! 490: if (mode & VWRITE)
! 491: mask |= S_IWUSR;
! 492: return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
! 493: }
! 494:
! 495: /* Otherwise, check the groups. */
! 496: for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
! 497: if (ip->i_mp->ntm_gid == *gp) {
! 498: if (mode & VEXEC)
! 499: mask |= S_IXGRP;
! 500: if (mode & VREAD)
! 501: mask |= S_IRGRP;
! 502: if (mode & VWRITE)
! 503: mask |= S_IWGRP;
! 504: return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES);
! 505: }
! 506:
! 507: /* Otherwise, check everyone else. */
! 508: if (mode & VEXEC)
! 509: mask |= S_IXOTH;
! 510: if (mode & VREAD)
! 511: mask |= S_IROTH;
! 512: if (mode & VWRITE)
! 513: mask |= S_IWOTH;
! 514: return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES);
! 515: }
! 516:
! 517: /*
! 518: * Open called.
! 519: *
! 520: * Nothing to do.
! 521: */
! 522: /* ARGSUSED */
! 523: static int
! 524: ntfs_open(ap)
! 525: struct vop_open_args /* {
! 526: struct vnode *a_vp;
! 527: int a_mode;
! 528: struct ucred *a_cred;
! 529: struct proc *a_p;
! 530: } */ *ap;
! 531: {
! 532: #if NTFS_DEBUG
! 533: struct vnode *vp = ap->a_vp;
! 534: struct ntnode *ip = VTONT(vp);
! 535:
! 536: printf("ntfs_open: %d\n",ip->i_number);
! 537: #endif
! 538:
! 539: /*
! 540: * Files marked append-only must be opened for appending.
! 541: */
! 542:
! 543: return (0);
! 544: }
! 545:
! 546: /*
! 547: * Close called.
! 548: *
! 549: * Update the times on the inode.
! 550: */
! 551: /* ARGSUSED */
! 552: static int
! 553: ntfs_close(ap)
! 554: struct vop_close_args /* {
! 555: struct vnode *a_vp;
! 556: int a_fflag;
! 557: struct ucred *a_cred;
! 558: struct proc *a_p;
! 559: } */ *ap;
! 560: {
! 561: #if NTFS_DEBUG
! 562: struct vnode *vp = ap->a_vp;
! 563: struct ntnode *ip = VTONT(vp);
! 564:
! 565: printf("ntfs_close: %d\n",ip->i_number);
! 566: #endif
! 567:
! 568: return (0);
! 569: }
! 570:
! 571: int
! 572: ntfs_readdir(ap)
! 573: struct vop_readdir_args /* {
! 574: struct vnode *a_vp;
! 575: struct uio *a_uio;
! 576: struct ucred *a_cred;
! 577: int *a_ncookies;
! 578: u_int **cookies;
! 579: } */ *ap;
! 580: {
! 581: struct vnode *vp = ap->a_vp;
! 582: struct fnode *fp = VTOF(vp);
! 583: struct ntnode *ip = FTONT(fp);
! 584: struct uio *uio = ap->a_uio;
! 585: struct ntfsmount *ntmp = ip->i_mp;
! 586: int i, error = 0;
! 587: u_int32_t faked = 0, num;
! 588: int ncookies = 0;
! 589: struct dirent *cde;
! 590: off_t off;
! 591:
! 592: dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid));
! 593:
! 594: off = uio->uio_offset;
! 595:
! 596: MALLOC(cde, struct dirent *, sizeof(struct dirent), M_TEMP, M_WAITOK);
! 597:
! 598: /* Simulate . in every dir except ROOT */
! 599: if (ip->i_number != NTFS_ROOTINO
! 600: && uio->uio_offset < sizeof(struct dirent)) {
! 601: cde->d_fileno = ip->i_number;
! 602: cde->d_reclen = sizeof(struct dirent);
! 603: cde->d_type = DT_DIR;
! 604: cde->d_namlen = 1;
! 605: strncpy(cde->d_name, ".", 2);
! 606: error = uiomove((void *)cde, sizeof(struct dirent), uio);
! 607: if (error)
! 608: goto out;
! 609:
! 610: ncookies++;
! 611: }
! 612:
! 613: /* Simulate .. in every dir including ROOT */
! 614: if (uio->uio_offset < 2 * sizeof(struct dirent)) {
! 615: cde->d_fileno = NTFS_ROOTINO; /* XXX */
! 616: cde->d_reclen = sizeof(struct dirent);
! 617: cde->d_type = DT_DIR;
! 618: cde->d_namlen = 2;
! 619: strncpy(cde->d_name, "..", 3);
! 620:
! 621: error = uiomove((void *) cde, sizeof(struct dirent), uio);
! 622: if (error)
! 623: goto out;
! 624:
! 625: ncookies++;
! 626: }
! 627:
! 628: faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2;
! 629: num = uio->uio_offset / sizeof(struct dirent) - faked;
! 630:
! 631: while (uio->uio_resid >= sizeof(struct dirent)) {
! 632: struct attr_indexentry *iep;
! 633: char *fname;
! 634: size_t remains;
! 635: int sz;
! 636:
! 637: error = ntfs_ntreaddir(ntmp, fp, num, &iep);
! 638: if (error)
! 639: goto out;
! 640:
! 641: if (NULL == iep)
! 642: break;
! 643:
! 644: for(; !(iep->ie_flag & NTFS_IEFLAG_LAST) && (uio->uio_resid >= sizeof(struct dirent));
! 645: iep = NTFS_NEXTREC(iep, struct attr_indexentry *))
! 646: {
! 647: if(!ntfs_isnamepermitted(ntmp,iep))
! 648: continue;
! 649:
! 650: remains = sizeof(cde->d_name) - 1;
! 651: fname = cde->d_name;
! 652: for(i=0; i<iep->ie_fnamelen; i++) {
! 653: sz = (*ntmp->ntm_wput)(fname, remains,
! 654: iep->ie_fname[i]);
! 655: fname += sz;
! 656: remains -= sz;
! 657: }
! 658: *fname = '\0';
! 659: dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, flag: %d, ",
! 660: num, cde->d_name, iep->ie_fnametype,
! 661: iep->ie_flag));
! 662: cde->d_namlen = fname - (char *) cde->d_name;
! 663: cde->d_fileno = iep->ie_number;
! 664: cde->d_type = (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG;
! 665: cde->d_reclen = sizeof(struct dirent);
! 666: dprintf(("%s\n", (cde->d_type == DT_DIR) ? "dir":"reg"));
! 667:
! 668: error = uiomove((void *)cde, sizeof(struct dirent), uio);
! 669: if (error)
! 670: goto out;
! 671:
! 672: ncookies++;
! 673: num++;
! 674: }
! 675: }
! 676:
! 677: dprintf(("ntfs_readdir: %d entries (%d bytes) read\n",
! 678: ncookies,(u_int)(uio->uio_offset - off)));
! 679: dprintf(("ntfs_readdir: off: %d resid: %d\n",
! 680: (u_int32_t)uio->uio_offset,uio->uio_resid));
! 681:
! 682: if (!error && ap->a_ncookies != NULL) {
! 683: struct dirent* dpStart;
! 684: struct dirent* dp;
! 685: #if defined(__FreeBSD__)
! 686: u_long *cookies;
! 687: u_long *cookiep;
! 688: #else /* defined(__NetBSD__) */
! 689: off_t *cookies;
! 690: off_t *cookiep;
! 691: #endif
! 692:
! 693: printf("ntfs_readdir: %d cookies\n",ncookies);
! 694: if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
! 695: panic("ntfs_readdir: unexpected uio from NFS server");
! 696: dpStart = (struct dirent *)
! 697: ((caddr_t)uio->uio_iov->iov_base -
! 698: (uio->uio_offset - off));
! 699: #if defined(__FreeBSD__)
! 700: MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
! 701: M_TEMP, M_WAITOK);
! 702: #else /* defined(__NetBSD__) */
! 703: cookies = malloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
! 704: #endif
! 705: for (dp = dpStart, cookiep = cookies, i=0;
! 706: i < ncookies;
! 707: dp = (struct dirent *)((caddr_t) dp + dp->d_reclen), i++) {
! 708: off += dp->d_reclen;
! 709: *cookiep++ = (u_int) off;
! 710: }
! 711: *ap->a_ncookies = ncookies;
! 712: *ap->a_cookies = cookies;
! 713: }
! 714: /*
! 715: if (ap->a_eofflag)
! 716: *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset;
! 717: */
! 718: out:
! 719: FREE(cde, M_TEMP);
! 720: return (error);
! 721: }
! 722:
! 723: int
! 724: ntfs_lookup(ap)
! 725: struct vop_lookup_args /* {
! 726: struct vnode *a_dvp;
! 727: struct vnode **a_vpp;
! 728: struct componentname *a_cnp;
! 729: } */ *ap;
! 730: {
! 731: struct vnode *dvp = ap->a_dvp;
! 732: struct ntnode *dip = VTONT(dvp);
! 733: struct ntfsmount *ntmp = dip->i_mp;
! 734: struct componentname *cnp = ap->a_cnp;
! 735: struct ucred *cred = cnp->cn_cred;
! 736: int error;
! 737: int lockparent = cnp->cn_flags & LOCKPARENT;
! 738: #if NTFS_DEBUG
! 739: int wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
! 740: #endif
! 741: dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n",
! 742: (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen,
! 743: dip->i_number, lockparent, wantparent));
! 744:
! 745: error = VOP_ACCESS(dvp, VEXEC, cred, cnp->cn_proc);
! 746: if(error)
! 747: return (error);
! 748:
! 749: if ((cnp->cn_flags & ISLASTCN) &&
! 750: (dvp->v_mount->mnt_flag & MNT_RDONLY) &&
! 751: (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
! 752: return (EROFS);
! 753:
! 754: #ifdef __NetBSD__
! 755: /*
! 756: * We now have a segment name to search for, and a directory
! 757: * to search.
! 758: *
! 759: * Before tediously performing a linear scan of the directory,
! 760: * check the name cache to see if the directory/name pair
! 761: * we are looking for is known already.
! 762: */
! 763: if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0)
! 764: return (error);
! 765: #endif
! 766:
! 767: if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
! 768: dprintf(("ntfs_lookup: faking . directory in %d\n",
! 769: dip->i_number));
! 770:
! 771: VREF(dvp);
! 772: *ap->a_vpp = dvp;
! 773: error = 0;
! 774: } else if (cnp->cn_flags & ISDOTDOT) {
! 775: struct ntvattr *vap;
! 776:
! 777: dprintf(("ntfs_lookup: faking .. directory in %d\n",
! 778: dip->i_number));
! 779:
! 780: error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap);
! 781: if(error)
! 782: return (error);
! 783:
! 784: VOP__UNLOCK(dvp,0,cnp->cn_proc);
! 785: cnp->cn_flags |= PDIRUNLOCK;
! 786:
! 787: dprintf(("ntfs_lookup: parentdir: %d\n",
! 788: vap->va_a_name->n_pnumber));
! 789: error = VFS_VGET(ntmp->ntm_mountp,
! 790: vap->va_a_name->n_pnumber,ap->a_vpp);
! 791: ntfs_ntvattrrele(vap);
! 792: if (error) {
! 793: if (VN_LOCK(dvp,LK_EXCLUSIVE|LK_RETRY,cnp->cn_proc)==0)
! 794: cnp->cn_flags &= ~PDIRUNLOCK;
! 795: return (error);
! 796: }
! 797:
! 798: if (lockparent && (cnp->cn_flags & ISLASTCN)) {
! 799: error = VN_LOCK(dvp, LK_EXCLUSIVE, cnp->cn_proc);
! 800: if (error) {
! 801: vput( *(ap->a_vpp) );
! 802: return (error);
! 803: }
! 804: cnp->cn_flags &= ~PDIRUNLOCK;
! 805: }
! 806: } else {
! 807: error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp);
! 808: if (error) {
! 809: dprintf(("ntfs_ntlookupfile: returned %d\n", error));
! 810: return (error);
! 811: }
! 812:
! 813: dprintf(("ntfs_lookup: found ino: %d\n",
! 814: VTONT(*ap->a_vpp)->i_number));
! 815:
! 816: if(!lockparent || !(cnp->cn_flags & ISLASTCN))
! 817: VOP__UNLOCK(dvp, 0, cnp->cn_proc);
! 818: }
! 819:
! 820: if (cnp->cn_flags & MAKEENTRY)
! 821: cache_enter(dvp, *ap->a_vpp, cnp);
! 822:
! 823: return (error);
! 824: }
! 825:
! 826: #if defined(__FreeBSD__)
! 827: /*
! 828: * Flush the blocks of a file to disk.
! 829: *
! 830: * This function is worthless for vnodes that represent directories. Maybe we
! 831: * could just do a sync if they try an fsync on a directory file.
! 832: */
! 833: static int
! 834: ntfs_fsync(ap)
! 835: struct vop_fsync_args /* {
! 836: struct vnode *a_vp;
! 837: struct ucred *a_cred;
! 838: int a_waitfor;
! 839: off_t offlo;
! 840: off_t offhi;
! 841: struct proc *a_p;
! 842: } */ *ap;
! 843: {
! 844: return (0);
! 845: }
! 846: #endif
! 847:
! 848: /*
! 849: * Return POSIX pathconf information applicable to NTFS filesystem
! 850: */
! 851: int
! 852: ntfs_pathconf(v)
! 853: void *v;
! 854: {
! 855: struct vop_pathconf_args /* {
! 856: struct vnode *a_vp;
! 857: int a_name;
! 858: register_t *a_retval;
! 859: } */ *ap = v;
! 860:
! 861: switch (ap->a_name) {
! 862: case _PC_LINK_MAX:
! 863: *ap->a_retval = 1;
! 864: return (0);
! 865: case _PC_NAME_MAX:
! 866: *ap->a_retval = NTFS_MAXFILENAME;
! 867: return (0);
! 868: case _PC_PATH_MAX:
! 869: *ap->a_retval = PATH_MAX;
! 870: return (0);
! 871: case _PC_CHOWN_RESTRICTED:
! 872: *ap->a_retval = 1;
! 873: return (0);
! 874: case _PC_NO_TRUNC:
! 875: *ap->a_retval = 0;
! 876: return (0);
! 877: case _PC_SYNC_IO:
! 878: *ap->a_retval = 1;
! 879: return (0);
! 880: case _PC_FILESIZEBITS:
! 881: *ap->a_retval = 64;
! 882: return (0);
! 883: default:
! 884: return (EINVAL);
! 885: }
! 886: /* NOTREACHED */
! 887: }
! 888:
! 889: /*
! 890: * Global vfs data structures
! 891: */
! 892: vop_t **ntfs_vnodeop_p;
! 893: #if defined(__FreeBSD__)
! 894: static
! 895: struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
! 896: { &vop_default_desc, (vop_t *)ntfs_bypass },
! 897:
! 898: { &vop_getattr_desc, (vop_t *)ntfs_getattr },
! 899: { &vop_inactive_desc, (vop_t *)ntfs_inactive },
! 900: { &vop_reclaim_desc, (vop_t *)ntfs_reclaim },
! 901: { &vop_print_desc, (vop_t *)ntfs_print },
! 902: { &vop_pathconf_desc, ntfs_pathconf },
! 903:
! 904: { &vop_islocked_desc, (vop_t *)vop_stdislocked },
! 905: { &vop_unlock_desc, (vop_t *)vop_stdunlock },
! 906: { &vop_lock_desc, (vop_t *)vop_stdlock },
! 907: { &vop_cachedlookup_desc, (vop_t *)ntfs_lookup },
! 908: { &vop_lookup_desc, (vop_t *)vfs_cache_lookup },
! 909:
! 910: { &vop_access_desc, (vop_t *)ntfs_access },
! 911: { &vop_close_desc, (vop_t *)ntfs_close },
! 912: { &vop_open_desc, (vop_t *)ntfs_open },
! 913: { &vop_readdir_desc, (vop_t *)ntfs_readdir },
! 914: { &vop_fsync_desc, (vop_t *)ntfs_fsync },
! 915:
! 916: { &vop_bmap_desc, (vop_t *)ntfs_bmap },
! 917: { &vop_getpages_desc, (vop_t *) ntfs_getpages },
! 918: { &vop_putpages_desc, (vop_t *) ntfs_putpages },
! 919: { &vop_strategy_desc, (vop_t *)ntfs_strategy },
! 920: { &vop_bwrite_desc, (vop_t *)vop_stdbwrite },
! 921: { &vop_read_desc, (vop_t *)ntfs_read },
! 922: { &vop_write_desc, (vop_t *)ntfs_write },
! 923:
! 924: { NULL, NULL }
! 925: };
! 926:
! 927: static
! 928: struct vnodeopv_desc ntfs_vnodeop_opv_desc =
! 929: { &ntfs_vnodeop_p, ntfs_vnodeop_entries };
! 930:
! 931: VNODEOP_SET(ntfs_vnodeop_opv_desc);
! 932:
! 933: #else /* !FreeBSD */
! 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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