sys/vfs/hpfs/hpfs_vnops.c

   1 /*-
   2  * Copyright (c) 1998, 1999 Semen Ustimenko (semenu@FreeBSD.org)
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/fs/hpfs/hpfs_vnops.c,v 1.2.2.2 2002/01/15 18:35:09 semenu Exp $
  27  * $DragonFly: src/sys/vfs/hpfs/hpfs_vnops.c,v 1.47 2008/06/19 23:27:39 dillon Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/kernel.h>
  33 #include <sys/proc.h>
  34 #include <sys/time.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <sys/vnode.h>
  38 #include <sys/mount.h>
  39 #include <sys/namei.h>
  40 #include <sys/malloc.h>
  41 #include <sys/buf.h>
  42 #include <sys/dirent.h>
  43
  44 #include <machine/limits.h>
  45
  46 #include <vm/vm.h>
  47 #include <vm/vm_param.h>
  48 #if !defined(__DragonFly__)
  49 #include <vm/vm_prot.h>
  50 #endif
  51 #include <vm/vm_page.h>
  52 #include <vm/vm_object.h>
  53 #include <vm/vm_pager.h>
  54 #include <vm/vm_zone.h>
  55 #if defined(__DragonFly__)
  56 #include <vm/vnode_pager.h>
  57 #endif
  58 #include <vm/vm_extern.h>
  59 #include <sys/buf2.h>
  60
  61 #if !defined(__DragonFly__)
  62 #include <miscfs/specfs/specdev.h>
  63 #include <miscfs/genfs/genfs.h>
  64 #endif
  65
  66 #include <sys/unistd.h> /* for pathconf(2) constants */
  67
  68 #include "hpfs.h"
  69 #include "hpfsmount.h"
  70 #include "hpfs_subr.h"
  71 #include "hpfs_ioctl.h"
  72
  73 static int      hpfs_de_uiomove (int *, struct hpfsmount *,
  74                                  struct hpfsdirent *, struct uio *);
  75 static int      hpfs_ioctl (struct vop_ioctl_args *ap);
  76 static int      hpfs_read (struct vop_read_args *);
  77 static int      hpfs_write (struct vop_write_args *ap);
  78 static int      hpfs_getattr (struct vop_getattr_args *ap);
  79 static int      hpfs_setattr (struct vop_setattr_args *ap);
  80 static int      hpfs_inactive (struct vop_inactive_args *ap);
  81 static int      hpfs_print (struct vop_print_args *ap);
  82 static int      hpfs_reclaim (struct vop_reclaim_args *ap);
  83 static int      hpfs_strategy (struct vop_strategy_args *ap);
  84 static int      hpfs_access (struct vop_access_args *ap);
  85 static int      hpfs_readdir (struct vop_readdir_args *ap);
  86 static int      hpfs_lookup (struct vop_old_lookup_args *ap);
  87 static int      hpfs_create (struct vop_old_create_args *);
  88 static int      hpfs_remove (struct vop_old_remove_args *);
  89 static int      hpfs_bmap (struct vop_bmap_args *ap);
  90 #if defined(__DragonFly__)
  91 static int      hpfs_fsync (struct vop_fsync_args *ap);
  92 #endif
  93 static int      hpfs_pathconf (struct vop_pathconf_args *ap);
  94
  95 #if defined(__DragonFly__)
  96
  97 /*
  98  * hpfs_fsync(struct vnode *a_vp, int a_waitfor)
  99  */
 100 static int
 101 hpfs_fsync(struct vop_fsync_args *ap)
 102 {
 103         struct vnode *vp = ap->a_vp;
 104
 105         /*
 106          * Flush all dirty buffers associated with a vnode.
 107          */
 108 #ifdef DIAGNOSTIC
 109 loop:
 110 #endif
 111         vfsync(vp, ap->a_waitfor, 0, NULL, NULL);
 112 #ifdef DIAGNOSTIC
 113         if (ap->a_waitfor == MNT_WAIT && !RB_EMPTY(&vp->v_rbdirty_tree)) {
 114                 vprint("hpfs_fsync: dirty", vp);
 115                 goto loop;
 116         }
 117 #endif
 118
 119         /*
 120          * Write out the on-disc version of the vnode.
 121          */
 122         return hpfs_update(VTOHP(vp));
 123 }
 124
 125 #endif
 126
 127 /*
 128  * hpfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data,
 129  *            int a_fflag, struct ucred *a_cred)
 130  */
 131 static int
 132 hpfs_ioctl(struct vop_ioctl_args *ap)
 133 {
 134         struct vnode *vp = ap->a_vp;
 135         struct hpfsnode *hp = VTOHP(vp);
 136         int error;
 137
 138         kprintf("hpfs_ioctl(0x%x, 0x%lx, 0x%p, 0x%x): ",
 139                 hp->h_no, ap->a_command, ap->a_data, ap->a_fflag);
 140
 141         switch (ap->a_command) {
 142         case HPFSIOCGEANUM: {
 143                 u_long eanum;
 144                 u_long passed;
 145                 struct ea *eap;
 146
 147                 eanum = 0;
 148
 149                 if (hp->h_fn.fn_ealen > 0) {
 150                         eap = (struct ea *)&(hp->h_fn.fn_int);
 151                         passed = 0;
 152
 153                         while (passed < hp->h_fn.fn_ealen) {
 154
 155                                 kprintf("EAname: %s\n", EA_NAME(eap));
 156
 157                                 eanum++;
 158                                 passed += sizeof(struct ea) +
 159                                           eap->ea_namelen + 1 + eap->ea_vallen;
 160                                 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int +
 161                                                 passed);
 162                         }
 163                         error = 0;
 164                 } else {
 165                         error = ENOENT;
 166                 }
 167
 168                 kprintf("%lu eas\n", eanum);
 169
 170                 *(u_long *)ap->a_data = eanum;
 171
 172                 break;
 173         }
 174         case HPFSIOCGEASZ: {
 175                 u_long eanum;
 176                 u_long passed;
 177                 struct ea *eap;
 178
 179                 kprintf("EA%ld\n", *(u_long *)ap->a_data);
 180
 181                 eanum = 0;
 182                 if (hp->h_fn.fn_ealen > 0) {
 183                         eap = (struct ea *)&(hp->h_fn.fn_int);
 184                         passed = 0;
 185
 186                         error = ENOENT;
 187                         while (passed < hp->h_fn.fn_ealen) {
 188                                 kprintf("EAname: %s\n", EA_NAME(eap));
 189
 190                                 if (eanum == *(u_long *)ap->a_data) {
 191                                         *(u_long *)ap->a_data =
 192                                                 eap->ea_namelen + 1 +
 193                                                 eap->ea_vallen;
 194
 195                                         error = 0;
 196                                         break;
 197                                 }
 198
 199                                 eanum++;
 200                                 passed += sizeof(struct ea) +
 201                                           eap->ea_namelen + 1 + eap->ea_vallen;
 202                                 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int +
 203                                                 passed);
 204                         }
 205                 } else {
 206                         error = ENOENT;
 207                 }
 208
 209                 break;
 210         }
 211         case HPFSIOCRDEA: {
 212                 u_long eanum;
 213                 u_long passed;
 214                 struct hpfs_rdea *rdeap;
 215                 struct ea *eap;
 216
 217                 rdeap = (struct hpfs_rdea *)ap->a_data;
 218                 kprintf("EA%ld\n", rdeap->ea_no);
 219
 220                 eanum = 0;
 221                 if (hp->h_fn.fn_ealen > 0) {
 222                         eap = (struct ea *)&(hp->h_fn.fn_int);
 223                         passed = 0;
 224
 225                         error = ENOENT;
 226                         while (passed < hp->h_fn.fn_ealen) {
 227                                 kprintf("EAname: %s\n", EA_NAME(eap));
 228
 229                                 if (eanum == rdeap->ea_no) {
 230                                         rdeap->ea_sz = eap->ea_namelen + 1 +
 231                                                         eap->ea_vallen;
 232                                         copyout(EA_NAME(eap),rdeap->ea_data,
 233                                                 rdeap->ea_sz);
 234                                         error = 0;
 235                                         break;
 236                                 }
 237
 238                                 eanum++;
 239                                 passed += sizeof(struct ea) +
 240                                           eap->ea_namelen + 1 + eap->ea_vallen;
 241                                 eap = (struct ea *)((caddr_t)hp->h_fn.fn_int +
 242                                                 passed);
 243                         }
 244                 } else {
 245                         error = ENOENT;
 246                 }
 247
 248                 break;
 249         }
 250         default:
 251                 error = EOPNOTSUPP;
 252                 break;
 253         }
 254         return (error);
 255 }
 256
 257 /*
 258  * Map file offset to disk offset.
 259  *
 260  * hpfs_bmap(struct vnode *a_vp, off_t a_loffset,
 261  *           off_t *a_doffsetp, int *a_runp, int *a_runb)
 262  */
 263 int
 264 hpfs_bmap(struct vop_bmap_args *ap)
 265 {
 266         struct hpfsnode *hp = VTOHP(ap->a_vp);
 267         int error;
 268         daddr_t lbn;
 269         daddr_t dbn;
 270
 271         if (ap->a_runb != NULL)
 272                 *ap->a_runb = 0;
 273         if (ap->a_doffsetp == NULL)
 274                 return (0);
 275
 276         dprintf(("hpfs_bmap(0x%x, 0x%x): ",hp->h_no, ap->a_bn));
 277
 278         lbn = ap->a_loffset >> DEV_BSHIFT;
 279         KKASSERT(((int)ap->a_loffset & DEV_BMASK) == 0);
 280
 281         error = hpfs_hpbmap (hp, lbn, &dbn, ap->a_runp);
 282         if (error || dbn == (daddr_t)-1) {
 283                 *ap->a_doffsetp = NOOFFSET;
 284         } else {
 285                 *ap->a_doffsetp = (off_t)dbn << DEV_BSHIFT;
 286         }
 287         return (error);
 288 }
 289
 290 /*
 291  * hpfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 292  *           struct ucred *a_cred)
 293  */
 294 static int
 295 hpfs_read(struct vop_read_args *ap)
 296 {
 297         struct vnode *vp = ap->a_vp;
 298         struct hpfsnode *hp = VTOHP(vp);
 299         struct uio *uio = ap->a_uio;
 300         struct buf *bp;
 301         u_int xfersz, toread;
 302         u_int off;
 303         daddr_t lbn, bn;
 304         int resid;
 305         int runl;
 306         int error = 0;
 307
 308         resid = min (uio->uio_resid, hp->h_fn.fn_size - uio->uio_offset);
 309
 310         dprintf(("hpfs_read(0x%x, off: %d resid: %d, segflg: %d): [resid: 0x%x]\n",hp->h_no,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg, resid));
 311
 312         while (resid) {
 313                 lbn = uio->uio_offset >> DEV_BSHIFT;
 314                 off = uio->uio_offset & (DEV_BSIZE - 1);
 315                 dprintf(("hpfs_read: resid: 0x%x lbn: 0x%x off: 0x%x\n",
 316                         uio->uio_resid, lbn, off));
 317                 error = hpfs_hpbmap(hp, lbn, &bn, &runl);
 318                 if (error)
 319                         return (error);
 320
 321                 toread = min(off + resid, min(DFLTPHYS, (runl+1)*DEV_BSIZE));
 322                 xfersz = (toread + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1);
 323                 dprintf(("hpfs_read: bn: 0x%x (0x%x) toread: 0x%x (0x%x)\n",
 324                         bn, runl, toread, xfersz));
 325
 326                 if (toread == 0)
 327                         break;
 328
 329                 error = bread(hp->h_devvp, dbtodoff(bn), xfersz, &bp);
 330                 if (error) {
 331                         brelse(bp);
 332                         break;
 333                 }
 334
 335                 error = uiomove(bp->b_data + off, toread - off, uio);
 336                 if(error) {
 337                         brelse(bp);
 338                         break;
 339                 }
 340                 brelse(bp);
 341                 resid -= toread;
 342         }
 343         dprintf(("hpfs_read: successful\n"));
 344         return (error);
 345 }
 346
 347 /*
 348  * hpfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
 349  *            struct ucred *a_cred)
 350  */
 351 static int
 352 hpfs_write(struct vop_write_args *ap)
 353 {
 354         struct vnode *vp = ap->a_vp;
 355         struct hpfsnode *hp = VTOHP(vp);
 356         struct uio *uio = ap->a_uio;
 357         struct buf *bp;
 358         u_int xfersz, towrite;
 359         u_int off;
 360         daddr_t lbn, bn;
 361         int runl;
 362         int error = 0;
 363
 364         dprintf(("hpfs_write(0x%x, off: %d resid: %d, segflg: %d):\n",hp->h_no,(u_int32_t)uio->uio_offset,uio->uio_resid,uio->uio_segflg));
 365
 366         if (ap->a_ioflag & IO_APPEND) {
 367                 dprintf(("hpfs_write: APPEND mode\n"));
 368                 uio->uio_offset = hp->h_fn.fn_size;
 369         }
 370         if (uio->uio_offset + uio->uio_resid > hp->h_fn.fn_size) {
 371                 error = hpfs_extend (hp, uio->uio_offset + uio->uio_resid);
 372                 if (error) {
 373                         kprintf("hpfs_write: hpfs_extend FAILED %d\n", error);
 374                         return (error);
 375                 }
 376         }
 377
 378         while (uio->uio_resid) {
 379                 lbn = uio->uio_offset >> DEV_BSHIFT;
 380                 off = uio->uio_offset & (DEV_BSIZE - 1);
 381                 dprintf(("hpfs_write: resid: 0x%x lbn: 0x%x off: 0x%x\n",
 382                         uio->uio_resid, lbn, off));
 383                 error = hpfs_hpbmap(hp, lbn, &bn, &runl);
 384                 if (error)
 385                         return (error);
 386
 387                 towrite = min(off + uio->uio_resid, min(DFLTPHYS, (runl+1)*DEV_BSIZE));
 388                 xfersz = (towrite + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1);
 389                 dprintf(("hpfs_write: bn: 0x%x (0x%x) towrite: 0x%x (0x%x)\n",
 390                         bn, runl, towrite, xfersz));
 391
 392                 /*
 393                  * We do not have to issue a read-before-write if the xfer
 394                  * size does not cover the whole block.
 395                  *
 396                  * In the UIO_NOCOPY case, however, we are not overwriting
 397                  * anything and must do a read-before-write to fill in
 398                  * any missing pieces.
 399                  */
 400                 if (off == 0 && towrite == xfersz &&
 401                     uio->uio_segflg != UIO_NOCOPY) {
 402                         bp = getblk(hp->h_devvp, dbtodoff(bn), xfersz, 0, 0);
 403                         clrbuf(bp);
 404                 } else {
 405                         error = bread(hp->h_devvp, dbtodoff(bn), xfersz, &bp);
 406                         if (error) {
 407                                 brelse(bp);
 408                                 return (error);
 409                         }
 410                 }
 411
 412                 error = uiomove(bp->b_data + off, towrite - off, uio);
 413                 if(error) {
 414                         brelse(bp);
 415                         return (error);
 416                 }
 417
 418                 if (ap->a_ioflag & IO_SYNC)
 419                         bwrite(bp);
 420                 else
 421                         bawrite(bp);
 422         }
 423
 424         dprintf(("hpfs_write: successful\n"));
 425         return (0);
 426 }
 427
 428 /*
 429  * XXXXX do we need hpfsnode locking inside?
 430  *
 431  * hpfs_getattr(struct vnode *a_vp, struct vattr *a_vap)
 432  */
 433 static int
 434 hpfs_getattr(struct vop_getattr_args *ap)
 435 {
 436         struct vnode *vp = ap->a_vp;
 437         struct hpfsnode *hp = VTOHP(vp);
 438         struct vattr *vap = ap->a_vap;
 439         int error;
 440
 441         dprintf(("hpfs_getattr(0x%x):\n", hp->h_no));
 442
 443 #if defined(__DragonFly__)
 444         vap->va_fsid = dev2udev(hp->h_dev);
 445 #else /* defined(__NetBSD__) */
 446         vap->va_fsid = ip->i_dev;
 447 #endif
 448         vap->va_fileid = hp->h_no;
 449         vap->va_mode = hp->h_mode;
 450         vap->va_nlink = 1;
 451         vap->va_uid = hp->h_uid;
 452         vap->va_gid = hp->h_gid;
 453         vap->va_rmajor = VNOVAL;
 454         vap->va_rminor = VNOVAL;
 455         vap->va_size = hp->h_fn.fn_size;
 456         vap->va_bytes = ((hp->h_fn.fn_size + DEV_BSIZE-1) & ~(DEV_BSIZE-1)) +
 457                         DEV_BSIZE;
 458
 459         if (!(hp->h_flag & H_PARVALID)) {
 460                 error = hpfs_validateparent(hp);
 461                 if (error)
 462                         return (error);
 463         }
 464         vap->va_atime = hpfstimetounix(hp->h_atime);
 465         vap->va_mtime = hpfstimetounix(hp->h_mtime);
 466         vap->va_ctime = hpfstimetounix(hp->h_ctime);
 467
 468         vap->va_flags = 0;
 469         vap->va_gen = 0;
 470         vap->va_blocksize = DEV_BSIZE;
 471         vap->va_type = vp->v_type;
 472         vap->va_filerev = 0;
 473
 474         return (0);
 475 }
 476
 477 /*
 478  * XXXXX do we need hpfsnode locking inside?
 479  *
 480  * hpfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
 481  */
 482 static int
 483 hpfs_setattr(struct vop_setattr_args *ap)
 484 {
 485         struct vnode *vp = ap->a_vp;
 486         struct hpfsnode *hp = VTOHP(vp);
 487         struct vattr *vap = ap->a_vap;
 488         struct ucred *cred = ap->a_cred;
 489         int error;
 490
 491         dprintf(("hpfs_setattr(0x%x):\n", hp->h_no));
 492
 493         /*
 494          * Check for unsettable attributes.
 495          */
 496         if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
 497             (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
 498             (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
 499             (vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
 500                 dprintf(("hpfs_setattr: changing nonsettable attr\n"));
 501                 return (EINVAL);
 502         }
 503
 504         /* Can't change flags XXX Could be implemented */
 505         if (vap->va_flags != VNOVAL) {
 506                 kprintf("hpfs_setattr: FLAGS CANNOT BE SET\n");
 507                 return (EINVAL);
 508         }
 509
 510         /* Can't change uid/gid XXX Could be implemented */
 511         if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
 512                 kprintf("hpfs_setattr: UID/GID CANNOT BE SET\n");
 513                 return (EINVAL);
 514         }
 515
 516         /* Can't change mode XXX Could be implemented */
 517         if (vap->va_mode != (mode_t)VNOVAL) {
 518                 kprintf("hpfs_setattr: MODE CANNOT BE SET\n");
 519                 return (EINVAL);
 520         }
 521
 522         /* Update times */
 523         if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
 524                 if (vp->v_mount->mnt_flag & MNT_RDONLY)
 525                         return (EROFS);
 526                 if (cred->cr_uid != hp->h_uid &&
 527                     (error = suser_cred(cred, PRISON_ROOT)) &&
 528                     ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
 529                     (error = VOP_ACCESS(vp, VWRITE, cred))))
 530                         return (error);
 531                 if (vap->va_atime.tv_sec != VNOVAL)
 532                         hp->h_atime = vap->va_atime.tv_sec;
 533                 if (vap->va_mtime.tv_sec != VNOVAL)
 534                         hp->h_mtime = vap->va_mtime.tv_sec;
 535
 536                 hp->h_flag |= H_PARCHANGE;
 537         }
 538
 539         if (vap->va_size != VNOVAL) {
 540                 switch (vp->v_type) {
 541                 case VDIR:
 542                         return (EISDIR);
 543                 case VREG:
 544                         if (vp->v_mount->mnt_flag & MNT_RDONLY)
 545                                 return (EROFS);
 546                         break;
 547                 default:
 548                         kprintf("hpfs_setattr: WRONG v_type\n");
 549                         return (EINVAL);
 550                 }
 551
 552                 if (vap->va_size < hp->h_fn.fn_size) {
 553 #if defined(__DragonFly__)
 554                         error = vtruncbuf(vp, vap->va_size, DEV_BSIZE);
 555                         if (error)
 556                                 return (error);
 557 #else /* defined(__NetBSD__) */
 558 #error Need alternation for vtruncbuf()
 559 #endif
 560                         error = hpfs_truncate(hp, vap->va_size);
 561                         if (error)
 562                                 return (error);
 563
 564                 } else if (vap->va_size > hp->h_fn.fn_size) {
 565 #if defined(__DragonFly__)
 566                         vnode_pager_setsize(vp, vap->va_size);
 567 #endif
 568                         error = hpfs_extend(hp, vap->va_size);
 569                         if (error)
 570                                 return (error);
 571                 }
 572         }
 573
 574         return (0);
 575 }
 576
 577 /*
 578  * Last reference to an node.  If necessary, write or delete it.
 579  *
 580  * hpfs_inactive(struct vnode *a_vp)
 581  */
 582 int
 583 hpfs_inactive(struct vop_inactive_args *ap)
 584 {
 585         struct vnode *vp = ap->a_vp;
 586         struct hpfsnode *hp = VTOHP(vp);
 587         int error;
 588
 589         dprintf(("hpfs_inactive(0x%x): \n", hp->h_no));
 590
 591         if (hp->h_flag & H_CHANGE) {
 592                 dprintf(("hpfs_inactive: node changed, update\n"));
 593                 error = hpfs_update (hp);
 594                 if (error)
 595                         return (error);
 596         }
 597
 598         if (hp->h_flag & H_PARCHANGE) {
 599                 dprintf(("hpfs_inactive: parent node changed, update\n"));
 600                 error = hpfs_updateparent (hp);
 601                 if (error)
 602                         return (error);
 603         }
 604
 605         if (prtactive && vp->v_sysref.refcnt > 1)
 606                 vprint("hpfs_inactive: pushing active", vp);
 607
 608         if (hp->h_flag & H_INVAL) {
 609 #if defined(__DragonFly__)
 610                 vrecycle(vp);
 611 #else /* defined(__NetBSD__) */
 612                 vgone(vp);
 613 #endif
 614                 return (0);
 615         }
 616         return (0);
 617 }
 618
 619 /*
 620  * Reclaim an inode so that it can be used for other purposes.
 621  *
 622  * hpfs_reclaim(struct vnode *a_vp)
 623  */
 624 int
 625 hpfs_reclaim(struct vop_reclaim_args *ap)
 626 {
 627         struct vnode *vp = ap->a_vp;
 628         struct hpfsnode *hp = VTOHP(vp);
 629
 630         dprintf(("hpfs_reclaim(0x%x0): \n", hp->h_no));
 631
 632         hpfs_hphashrem(hp);
 633
 634         /* Purge old data structures associated with the inode. */
 635         if (hp->h_devvp) {
 636                 vrele(hp->h_devvp);
 637                 hp->h_devvp = NULL;
 638         }
 639
 640         vp->v_data = NULL;
 641
 642         FREE(hp, M_HPFSNO);
 643
 644         return (0);
 645 }
 646
 647 /*
 648  * hpfs_print(struct vnode *a_vp)
 649  */
 650 static int
 651 hpfs_print(struct vop_print_args *ap)
 652 {
 653         struct vnode *vp = ap->a_vp;
 654         struct hpfsnode *hp = VTOHP(vp);
 655
 656         kprintf("tag VT_HPFS, ino 0x%x",hp->h_no);
 657         lockmgr_printinfo(&vp->v_lock);
 658         kprintf("\n");
 659         return (0);
 660 }
 661
 662 /*
 663  * Calculate the logical to physical mapping if not done already,
 664  * then call the device strategy routine.
 665  *
 666  * In order to be able to swap to a file, the VOP_BMAP operation may not
 667  * deadlock on memory.  See hpfs_bmap() for details. XXXXXXX (not impl)
 668  *
 669  * hpfs_strategy(struct vnode *a_vp, struct bio *a_bio)
 670  */
 671 int
 672 hpfs_strategy(struct vop_strategy_args *ap)
 673 {
 674         struct bio *bio = ap->a_bio;
 675         struct bio *nbio;
 676         struct buf *bp = bio->bio_buf;
 677         struct vnode *vp = ap->a_vp;
 678         struct hpfsnode *hp;
 679         int error;
 680
 681         dprintf(("hpfs_strategy(): \n"));
 682
 683         if (vp->v_type == VBLK || vp->v_type == VCHR)
 684                 panic("hpfs_strategy: spec");
 685
 686         nbio = push_bio(bio);
 687         if (nbio->bio_offset == NOOFFSET) {
 688                 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
 689                                  NULL, NULL, bp->b_cmd);
 690                 if (error) {
 691                         kprintf("hpfs_strategy: VOP_BMAP FAILED %d\n", error);
 692                         bp->b_error = error;
 693                         bp->b_flags |= B_ERROR;
 694                         /* I/O was never started on nbio, must biodone(bio) */
 695                         biodone(bio);
 696                         return (error);
 697                 }
 698                 if (nbio->bio_offset == NOOFFSET)
 699                         vfs_bio_clrbuf(bp);
 700         }
 701         if (nbio->bio_offset == NOOFFSET) {
 702                 /* I/O was never started on nbio, must biodone(bio) */
 703                 biodone(bio);
 704                 return (0);
 705         }
 706         hp = VTOHP(ap->a_vp);
 707         vn_strategy(hp->h_devvp, nbio);
 708         return (0);
 709 }
 710
 711 /*
 712  * XXXXX do we need hpfsnode locking inside?
 713  *
 714  * hpfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
 715  */
 716 int
 717 hpfs_access(struct vop_access_args *ap)
 718 {
 719         struct vnode *vp = ap->a_vp;
 720         struct hpfsnode *hp = VTOHP(vp);
 721         struct ucred *cred = ap->a_cred;
 722         mode_t mask, mode = ap->a_mode;
 723         gid_t *gp;
 724         int i;
 725
 726         dprintf(("hpfs_access(0x%x):\n", hp->h_no));
 727
 728         /*
 729          * Disallow write attempts on read-only file systems;
 730          * unless the file is a socket, fifo, or a block or
 731          * character device resident on the file system.
 732          */
 733         if (mode & VWRITE) {
 734                 switch ((int)vp->v_type) {
 735                 case VDIR:
 736                 case VLNK:
 737                 case VREG:
 738                         if (vp->v_mount->mnt_flag & MNT_RDONLY)
 739                                 return (EROFS);
 740                         break;
 741                 }
 742         }
 743
 744         /* Otherwise, user id 0 always gets access. */
 745         if (cred->cr_uid == 0)
 746                 return (0);
 747
 748         mask = 0;
 749
 750         /* Otherwise, check the owner. */
 751         if (cred->cr_uid == hp->h_uid) {
 752                 if (mode & VEXEC)
 753                         mask |= S_IXUSR;
 754                 if (mode & VREAD)
 755                         mask |= S_IRUSR;
 756                 if (mode & VWRITE)
 757                         mask |= S_IWUSR;
 758                 return ((hp->h_mode & mask) == mask ? 0 : EACCES);
 759         }
 760
 761         /* Otherwise, check the groups. */
 762         for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
 763                 if (hp->h_gid == *gp) {
 764                         if (mode & VEXEC)
 765                                 mask |= S_IXGRP;
 766                         if (mode & VREAD)
 767                                 mask |= S_IRGRP;
 768                         if (mode & VWRITE)
 769                                 mask |= S_IWGRP;
 770                         return ((hp->h_mode & mask) == mask ? 0 : EACCES);
 771                 }
 772
 773         /* Otherwise, check everyone else. */
 774         if (mode & VEXEC)
 775                 mask |= S_IXOTH;
 776         if (mode & VREAD)
 777                 mask |= S_IROTH;
 778         if (mode & VWRITE)
 779                 mask |= S_IWOTH;
 780         return ((hp->h_mode & mask) == mask ? 0 : EACCES);
 781 }
 782
 783 static int
 784 hpfs_de_uiomove(int *error, struct hpfsmount *hpmp, struct hpfsdirent *dep,
 785                 struct uio *uio)
 786 {
 787         char convname[HPFS_MAXFILENAME + 1];
 788         int i, success;
 789
 790         dprintf(("[no: 0x%x, size: %d, name: %2d:%.*s, flag: 0x%x] ",
 791                 dep->de_fnode, dep->de_size, dep->de_namelen,
 792                 dep->de_namelen, dep->de_name, dep->de_flag));
 793
 794         /*strncpy(cde.d_name, dep->de_name, dep->de_namelen);*/
 795         for (i=0; i<dep->de_namelen; i++)
 796                 convname[i] = hpfs_d2u(hpmp, dep->de_name[i]);
 797         convname[dep->de_namelen] = '\0';
 798
 799         success = vop_write_dirent(error, uio, dep->de_fnode,
 800                         (dep->de_flag & DE_DIR) ? DT_DIR : DT_REG,
 801                         dep->de_namelen, convname);
 802
 803         dprintf(("[0x%x] ", uio->uio_resid));
 804         return (success);
 805 }
 806
 807
 808 /*
 809  * hpfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred,
 810  *              int *a_ncookies, off_t **cookies)
 811  */
 812 int
 813 hpfs_readdir(struct vop_readdir_args *ap)
 814 {
 815         struct vnode *vp = ap->a_vp;
 816         struct hpfsnode *hp = VTOHP(vp);
 817         struct hpfsmount *hpmp = hp->h_hpmp;
 818         struct uio *uio = ap->a_uio;
 819         int ncookies = 0, i, num, cnum;
 820         int error = 0;
 821         struct buf *bp;
 822         struct dirblk *dp;
 823         struct hpfsdirent *dep;
 824         lsn_t olsn;
 825         lsn_t lsn;
 826         int level;
 827
 828         dprintf(("hpfs_readdir(0x%x, 0x%x, 0x%x): ",hp->h_no,(u_int32_t)uio->uio_offset,uio->uio_resid));
 829
 830         /*
 831          * As we need to fake up . and .., and the remaining directory structure
 832          * can't be expressed in one off_t as well, we just increment uio_offset
 833          * by 1 for each entry.
 834          *
 835          * num is the entry we need to start reporting
 836          * cnum is the current entry
 837          */
 838         if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX)
 839                 return(EINVAL);
 840         if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0)
 841                 return (error);
 842
 843         num = uio->uio_offset;
 844         cnum = 0;
 845
 846         if( num <= cnum ) {
 847                 dprintf((". faked, "));
 848                 if (vop_write_dirent(&error, uio, hp->h_no, DT_DIR, 1, "."))
 849                         goto done;
 850                 if (error)
 851                         goto done;
 852                 ncookies ++;
 853         }
 854         cnum++;
 855
 856         if( num <= cnum ) {
 857                 dprintf((".. faked, "));
 858                 if (vop_write_dirent(&error, uio, hp->h_fn.fn_parent, DT_DIR, 2, ".."))
 859                         goto readdone;
 860                 if (error)
 861                         goto done;
 862                 ncookies ++;
 863         }
 864         cnum++;
 865
 866         lsn = ((alleaf_t *)hp->h_fn.fn_abd)->al_lsn;
 867
 868         olsn = 0;
 869         level = 1;
 870
 871 dive:
 872         dprintf(("[dive 0x%x] ", lsn));
 873         error = bread(hp->h_devvp, dbtodoff(lsn), D_BSIZE, &bp);
 874         if (error) {
 875                 brelse(bp);
 876                 goto done;
 877         }
 878
 879         dp = (struct dirblk *) bp->b_data;
 880         if (dp->d_magic != D_MAGIC) {
 881                 kprintf("hpfs_readdir: MAGIC DOESN'T MATCH\n");
 882                 brelse(bp);
 883                 error = EINVAL;
 884                 goto done;
 885         }
 886
 887         dep = D_DIRENT(dp);
 888
 889         if (olsn) {
 890                 dprintf(("[restore 0x%x] ", olsn));
 891
 892                 while(!(dep->de_flag & DE_END) ) {
 893                         if((dep->de_flag & DE_DOWN) &&
 894                            (olsn == DE_DOWNLSN(dep)))
 895                                          break;
 896                         dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen);
 897                 }
 898
 899                 if((dep->de_flag & DE_DOWN) && (olsn == DE_DOWNLSN(dep))) {
 900                         if (dep->de_flag & DE_END)
 901                                 goto blockdone;
 902
 903                         if (!(dep->de_flag & DE_SPECIAL)) {
 904                                 if (num <= cnum) {
 905                                         if (hpfs_de_uiomove(&error, hpmp, dep, uio)) {
 906                                                 brelse(bp);
 907                                                 dprintf(("[resid] "));
 908                                                 goto readdone;
 909                                         }
 910                                         if (error) {
 911                                                 brelse (bp);
 912                                                 goto done;
 913                                         }
 914                                         ncookies++;
 915                                 }
 916                                 cnum++;
 917                         }
 918
 919                         dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen);
 920                 } else {
 921                         kprintf("hpfs_readdir: ERROR! oLSN not found\n");
 922                         brelse(bp);
 923                         error = EINVAL;
 924                         goto done;
 925                 }
 926         }
 927
 928         olsn = 0;
 929
 930         while(!(dep->de_flag & DE_END)) {
 931                 if(dep->de_flag & DE_DOWN) {
 932                         lsn = DE_DOWNLSN(dep);
 933                         brelse(bp);
 934                         level++;
 935                         goto dive;
 936                 }
 937
 938                 if (!(dep->de_flag & DE_SPECIAL)) {
 939                         if (num <= cnum) {
 940                                 if (hpfs_de_uiomove(&error, hpmp, dep, uio)) {
 941                                         brelse(bp);
 942                                         dprintf(("[resid] "));
 943                                         goto readdone;
 944                                 }
 945                                 if (error) {
 946                                         brelse (bp);
 947                                         goto done;
 948                                 }
 949                                 ncookies++;
 950                         }
 951                         cnum++;
 952                 }
 953
 954                 dep = (hpfsdirent_t *)((caddr_t)dep + dep->de_reclen);
 955         }
 956
 957         if(dep->de_flag & DE_DOWN) {
 958                 dprintf(("[enddive] "));
 959                 lsn = DE_DOWNLSN(dep);
 960                 brelse(bp);
 961                 level++;
 962                 goto dive;
 963         }
 964
 965 blockdone:
 966         dprintf(("[EOB] "));
 967         olsn = lsn;
 968         lsn = dp->d_parent;
 969         brelse(bp);
 970         level--;
 971
 972         dprintf(("[level %d] ", level));
 973
 974         if (level > 0)
 975                 goto dive;      /* undive really */
 976
 977         if (ap->a_eofflag) {
 978             dprintf(("[EOF] "));
 979             *ap->a_eofflag = 1;
 980         }
 981
 982 readdone:
 983         uio->uio_offset = cnum;
 984         dprintf(("[readdone]\n"));
 985         if (!error && ap->a_ncookies != NULL) {
 986                 off_t *cookies;
 987                 off_t *cookiep;
 988
 989                 dprintf(("%d cookies, ",ncookies));
 990                 if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1)
 991                         panic("hpfs_readdir: unexpected uio from NFS server");
 992                 MALLOC(cookies, off_t *, ncookies * sizeof(off_t),
 993                        M_TEMP, M_WAITOK);
 994                 for (cookiep = cookies, i=0; i < ncookies; i++)
 995                         *cookiep++ = ++num;
 996
 997                 *ap->a_ncookies = ncookies;
 998                 *ap->a_cookies = cookies;
 999         }
1000
1001 done:
1002         vn_unlock(ap->a_vp);
1003         return (error);
1004 }
1005
1006 /*
1007  * hpfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp,
1008  *              struct componentname *a_cnp)
1009  */
1010 int
1011 hpfs_lookup(struct vop_old_lookup_args *ap)
1012 {
1013         struct vnode *dvp = ap->a_dvp;
1014         struct hpfsnode *dhp = VTOHP(dvp);
1015         struct hpfsmount *hpmp = dhp->h_hpmp;
1016         struct componentname *cnp = ap->a_cnp;
1017         struct ucred *cred = cnp->cn_cred;
1018         int error;
1019         int nameiop = cnp->cn_nameiop;
1020         int flags = cnp->cn_flags;
1021         int lockparent = flags & CNP_LOCKPARENT;
1022 #if HPFS_DEBUG
1023         int wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT);
1024 #endif
1025         dprintf(("hpfs_lookup(0x%x, %s, %ld, %d, %d): \n",
1026                 dhp->h_no, cnp->cn_nameptr, cnp->cn_namelen,
1027                 lockparent, wantparent));
1028
1029         if (nameiop != NAMEI_CREATE && nameiop != NAMEI_DELETE && nameiop != NAMEI_LOOKUP) {
1030                 kprintf("hpfs_lookup: LOOKUP, DELETE and CREATE are only supported\n");
1031                 return (EOPNOTSUPP);
1032         }
1033
1034         error = VOP_ACCESS(dvp, VEXEC, cred);
1035         if(error)
1036                 return (error);
1037
1038         if( (cnp->cn_namelen == 1) &&
1039             !strncmp(cnp->cn_nameptr,".",1) ) {
1040                 dprintf(("hpfs_lookup(0x%x,...): . faked\n",dhp->h_no));
1041
1042                 vref(dvp);
1043                 *ap->a_vpp = dvp;
1044
1045                 return (0);
1046         } else if( (cnp->cn_namelen == 2) &&
1047             !strncmp(cnp->cn_nameptr,"..",2) && (flags & CNP_ISDOTDOT) ) {
1048                 dprintf(("hpfs_lookup(0x%x,...): .. faked (0x%x)\n",
1049                         dhp->h_no, dhp->h_fn.fn_parent));
1050
1051                 VOP__UNLOCK(dvp, 0);
1052
1053                 error = VFS_VGET(hpmp->hpm_mp,
1054                                  dhp->h_fn.fn_parent, ap->a_vpp);
1055                 if (error) {
1056                         VOP__LOCK(dvp, 0);
1057                         return(error);
1058                 }
1059
1060                 if (lockparent && (error = VOP__LOCK(dvp, 0))) {
1061                         vput( *(ap->a_vpp) );
1062                         return (error);
1063                 }
1064                 return (error);
1065         } else {
1066                 struct buf *bp;
1067                 struct hpfsdirent *dep;
1068                 struct hpfsnode *hp;
1069
1070                 error = hpfs_genlookupbyname(dhp,
1071                                 cnp->cn_nameptr, cnp->cn_namelen, &bp, &dep);
1072                 if (error) {
1073                         if (error == ENOENT &&
1074                             (nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME)) {
1075                                 if(!lockparent)
1076                                         VOP__UNLOCK(dvp, 0);
1077                                 return (EJUSTRETURN);
1078                         }
1079
1080                         return (error);
1081                 }
1082
1083                 dprintf(("hpfs_lookup: fnode: 0x%x, CPID: 0x%x\n",
1084                          dep->de_fnode, dep->de_cpid));
1085
1086                 if (nameiop == NAMEI_DELETE) {
1087                         error = VOP_ACCESS(dvp, VWRITE, cred);
1088                         if (error) {
1089                                 brelse(bp);
1090                                 return (error);
1091                         }
1092                 }
1093
1094                 if (dhp->h_no == dep->de_fnode) {
1095                         brelse(bp);
1096                         vref(dvp);
1097                         *ap->a_vpp = dvp;
1098                         return (0);
1099                 }
1100
1101                 error = VFS_VGET(hpmp->hpm_mp, dep->de_fnode, ap->a_vpp);
1102                 if (error) {
1103                         kprintf("hpfs_lookup: VFS_VGET FAILED %d\n", error);
1104                         brelse(bp);
1105                         return(error);
1106                 }
1107
1108                 hp = VTOHP(*ap->a_vpp);
1109
1110                 hp->h_mtime = dep->de_mtime;
1111                 hp->h_ctime = dep->de_ctime;
1112                 hp->h_atime = dep->de_atime;
1113                 bcopy(dep->de_name, hp->h_name, dep->de_namelen);
1114                 hp->h_name[dep->de_namelen] = '\0';
1115                 hp->h_namelen = dep->de_namelen;
1116                 hp->h_flag |= H_PARVALID;
1117
1118                 brelse(bp);
1119
1120                 if(!lockparent)
1121                         VOP__UNLOCK(dvp, 0);
1122         }
1123         return (error);
1124 }
1125
1126 /*
1127  * hpfs_remove(struct vnode *a_dvp, struct vnode *a_vp,
1128  *              struct componentname *a_cnp)
1129  */
1130 int
1131 hpfs_remove(struct vop_old_remove_args *ap)
1132 {
1133         int error;
1134
1135         dprintf(("hpfs_remove(0x%x, %s, %ld): \n", VTOHP(ap->a_vp)->h_no,
1136                 ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen));
1137
1138         if (ap->a_vp->v_type == VDIR)
1139                 return (EPERM);
1140
1141         error = hpfs_removefnode (ap->a_dvp, ap->a_vp, ap->a_cnp);
1142         return (error);
1143 }
1144
1145 /*
1146  * hpfs_create(struct vnode *a_dvp, struct vnode **a_vpp,
1147  *              struct componentname *a_cnp, struct vattr *a_vap)
1148  */
1149 int
1150 hpfs_create(struct vop_old_create_args *ap)
1151 {
1152         int error;
1153
1154         dprintf(("hpfs_create(0x%x, %s, %ld): \n", VTOHP(ap->a_dvp)->h_no,
1155                 ap->a_cnp->cn_nameptr, ap->a_cnp->cn_namelen));
1156
1157         error = hpfs_makefnode (ap->a_dvp, ap->a_vpp, ap->a_cnp, ap->a_vap);
1158
1159         return (error);
1160 }
1161
1162 /*
1163  * Return POSIX pathconf information applicable to NTFS filesystem
1164  *
1165  * hpfs_pathconf(struct vnode *a_vp, int a_name, t *a_retval)
1166  */
1167 int
1168 hpfs_pathconf(struct vop_pathconf_args *ap)
1169 {
1170         switch (ap->a_name) {
1171         case _PC_LINK_MAX:
1172                 *ap->a_retval = 1;
1173                 return (0);
1174         case _PC_NAME_MAX:
1175                 *ap->a_retval = HPFS_MAXFILENAME;
1176                 return (0);
1177         case _PC_PATH_MAX:
1178                 *ap->a_retval = PATH_MAX;
1179                 return (0);
1180         case _PC_CHOWN_RESTRICTED:
1181                 *ap->a_retval = 1;
1182                 return (0);
1183         case _PC_NO_TRUNC:
1184                 *ap->a_retval = 0;
1185                 return (0);
1186 #if defined(__NetBSD__)
1187         case _PC_SYNC_IO:
1188                 *ap->a_retval = 1;
1189                 return (0);
1190         case _PC_FILESIZEBITS:
1191                 *ap->a_retval = 32;
1192                 return (0);
1193 #endif
1194         default:
1195                 return (EINVAL);
1196         }
1197         /* NOTREACHED */
1198 }
1199
1200
1201 /*
1202  * Global vfs data structures
1203  */
1204
1205 struct vop_ops hpfs_vnode_vops = {
1206         .vop_default =          vop_defaultop,
1207         .vop_getattr =          hpfs_getattr,
1208         .vop_setattr =          hpfs_setattr,
1209         .vop_inactive =         hpfs_inactive,
1210         .vop_reclaim =          hpfs_reclaim,
1211         .vop_print =            hpfs_print,
1212         .vop_old_create =       hpfs_create,
1213         .vop_old_remove =       hpfs_remove,
1214         .vop_old_lookup =       hpfs_lookup,
1215         .vop_access =           hpfs_access,
1216         .vop_readdir =          hpfs_readdir,
1217         .vop_fsync =            hpfs_fsync,
1218         .vop_bmap =             hpfs_bmap,
1219         .vop_getpages =         vop_stdgetpages,
1220         .vop_putpages =         vop_stdputpages,
1221         .vop_strategy =         hpfs_strategy,
1222         .vop_read =             hpfs_read,
1223         .vop_write =            hpfs_write,
1224         .vop_ioctl =            hpfs_ioctl,
1225         .vop_pathconf =         hpfs_pathconf
1226 };
1227