| 1 | /* $NetBSD: ntfs_vnops.c,v 1.23 1999/10/31 19:45:27 jdolecek Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1992, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * John Heidemann of the UCLA Ficus project. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 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 | * $FreeBSD: src/sys/ntfs/ntfs_vnops.c,v 1.9.2.4 2002/08/06 19:35:18 semenu Exp $ |
| 39 | * $DragonFly: src/sys/vfs/ntfs/ntfs_vnops.c,v 1.44 2007/11/20 21:03:50 dillon Exp $ |
| 40 | * |
| 41 | */ |
| 42 | |
| 43 | #include <sys/param.h> |
| 44 | #include <sys/systm.h> |
| 45 | #include <sys/kernel.h> |
| 46 | #include <sys/time.h> |
| 47 | #include <sys/types.h> |
| 48 | #include <sys/stat.h> |
| 49 | #include <sys/vnode.h> |
| 50 | #include <sys/mount.h> |
| 51 | #include <sys/proc.h> |
| 52 | #include <sys/namei.h> |
| 53 | #include <sys/malloc.h> |
| 54 | #include <sys/buf.h> |
| 55 | #include <sys/dirent.h> |
| 56 | #include <machine/limits.h> |
| 57 | |
| 58 | #include <vm/vm.h> |
| 59 | #include <vm/vm_param.h> |
| 60 | #if defined(__NetBSD__) |
| 61 | #include <vm/vm_prot.h> |
| 62 | #endif |
| 63 | #include <vm/vm_page.h> |
| 64 | #include <vm/vm_object.h> |
| 65 | #include <vm/vm_pager.h> |
| 66 | #if defined(__DragonFly__) |
| 67 | #include <vm/vnode_pager.h> |
| 68 | #endif |
| 69 | #include <vm/vm_extern.h> |
| 70 | |
| 71 | #include <sys/sysctl.h> |
| 72 | |
| 73 | /*#define NTFS_DEBUG 1*/ |
| 74 | #include "ntfs.h" |
| 75 | #include "ntfs_inode.h" |
| 76 | #include "ntfs_subr.h" |
| 77 | #if defined(__NetBSD__) |
| 78 | #include <miscfs/specfs/specdev.h> |
| 79 | #include <miscfs/genfs/genfs.h> |
| 80 | #endif |
| 81 | |
| 82 | #include <sys/unistd.h> /* for pathconf(2) constants */ |
| 83 | |
| 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_old_lookup_args *ap); |
| 96 | static int ntfs_bmap (struct vop_bmap_args *ap); |
| 97 | #if defined(__DragonFly__) |
| 98 | static int ntfs_fsync (struct vop_fsync_args *ap); |
| 99 | #else |
| 100 | static int ntfs_bypass (struct vop_generic_args *); |
| 101 | #endif |
| 102 | static int ntfs_pathconf (struct vop_pathconf_args *); |
| 103 | |
| 104 | int ntfs_prtactive = 1; /* 1 => print out reclaim of active vnodes */ |
| 105 | |
| 106 | /* |
| 107 | * This is a noop, simply returning what one has been given. |
| 108 | * |
| 109 | * ntfs_bmap(struct vnode *a_vp, off_t a_loffset, |
| 110 | * daddr_t *a_doffsetp, int *a_runp, int *a_runb) |
| 111 | */ |
| 112 | int |
| 113 | ntfs_bmap(struct vop_bmap_args *ap) |
| 114 | { |
| 115 | dprintf(("ntfs_bmap: vn: %p, blk: %d\n", ap->a_vp,(u_int32_t)ap->a_bn)); |
| 116 | if (ap->a_doffsetp != NULL) |
| 117 | *ap->a_doffsetp = ap->a_loffset; |
| 118 | if (ap->a_runp != NULL) |
| 119 | *ap->a_runp = 0; |
| 120 | #if !defined(__NetBSD__) |
| 121 | if (ap->a_runb != NULL) |
| 122 | *ap->a_runb = 0; |
| 123 | #endif |
| 124 | return (0); |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * ntfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, |
| 129 | * struct ucred *a_cred) |
| 130 | */ |
| 131 | static int |
| 132 | ntfs_read(struct vop_read_args *ap) |
| 133 | { |
| 134 | struct vnode *vp = ap->a_vp; |
| 135 | struct fnode *fp = VTOF(vp); |
| 136 | struct ntnode *ip = FTONT(fp); |
| 137 | struct uio *uio = ap->a_uio; |
| 138 | struct ntfsmount *ntmp = ip->i_mp; |
| 139 | struct buf *bp; |
| 140 | daddr_t cn; |
| 141 | int resid, off, toread; |
| 142 | int error; |
| 143 | |
| 144 | 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)); |
| 145 | |
| 146 | dprintf(("ntfs_read: filesize: %d",(u_int32_t)fp->f_size)); |
| 147 | |
| 148 | /* don't allow reading after end of file */ |
| 149 | if (uio->uio_offset > fp->f_size) |
| 150 | return (0); |
| 151 | |
| 152 | resid = min(uio->uio_resid, fp->f_size - uio->uio_offset); |
| 153 | |
| 154 | dprintf((", resid: %d\n", resid)); |
| 155 | |
| 156 | error = 0; |
| 157 | while (resid) { |
| 158 | cn = ntfs_btocn(uio->uio_offset); |
| 159 | off = ntfs_btocnoff(uio->uio_offset); |
| 160 | |
| 161 | toread = min(off + resid, ntfs_cntob(1)); |
| 162 | |
| 163 | error = bread(vp, ntfs_cntodoff(cn), ntfs_cntob(1), &bp); |
| 164 | if (error) { |
| 165 | brelse(bp); |
| 166 | break; |
| 167 | } |
| 168 | |
| 169 | error = uiomove(bp->b_data + off, toread - off, uio); |
| 170 | if(error) { |
| 171 | brelse(bp); |
| 172 | break; |
| 173 | } |
| 174 | brelse(bp); |
| 175 | |
| 176 | resid -= toread - off; |
| 177 | } |
| 178 | |
| 179 | return (error); |
| 180 | } |
| 181 | |
| 182 | #if !defined(__DragonFly__) |
| 183 | |
| 184 | /* |
| 185 | * ntfs_bypass() |
| 186 | */ |
| 187 | static int |
| 188 | ntfs_bypass(struct vop_generic_args *ap) |
| 189 | { |
| 190 | int error = ENOTTY; |
| 191 | dprintf(("ntfs_bypass: %s\n", ap->a_desc->sd_name)); |
| 192 | return (error); |
| 193 | } |
| 194 | |
| 195 | #endif |
| 196 | |
| 197 | /* |
| 198 | * ntfs_getattr(struct vnode *a_vp, struct vattr *a_vap) |
| 199 | */ |
| 200 | static int |
| 201 | ntfs_getattr(struct vop_getattr_args *ap) |
| 202 | { |
| 203 | struct vnode *vp = ap->a_vp; |
| 204 | struct fnode *fp = VTOF(vp); |
| 205 | struct ntnode *ip = FTONT(fp); |
| 206 | struct vattr *vap = ap->a_vap; |
| 207 | |
| 208 | dprintf(("ntfs_getattr: %d, flags: %d\n",ip->i_number,ip->i_flag)); |
| 209 | |
| 210 | #if defined(__DragonFly__) |
| 211 | vap->va_fsid = dev2udev(ip->i_dev); |
| 212 | #else /* NetBSD */ |
| 213 | vap->va_fsid = ip->i_dev; |
| 214 | #endif |
| 215 | vap->va_fileid = ip->i_number; |
| 216 | vap->va_mode = ip->i_mp->ntm_mode; |
| 217 | vap->va_nlink = ip->i_nlink; |
| 218 | vap->va_uid = ip->i_mp->ntm_uid; |
| 219 | vap->va_gid = ip->i_mp->ntm_gid; |
| 220 | vap->va_rmajor = VNOVAL; |
| 221 | vap->va_rminor = VNOVAL; |
| 222 | vap->va_size = fp->f_size; |
| 223 | vap->va_bytes = fp->f_allocated; |
| 224 | vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); |
| 225 | vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); |
| 226 | vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); |
| 227 | vap->va_flags = ip->i_flag; |
| 228 | vap->va_gen = 0; |
| 229 | vap->va_blocksize = ip->i_mp->ntm_spc * ip->i_mp->ntm_bps; |
| 230 | vap->va_type = vp->v_type; |
| 231 | vap->va_filerev = 0; |
| 232 | return (0); |
| 233 | } |
| 234 | |
| 235 | |
| 236 | /* |
| 237 | * Last reference to an ntnode. If necessary, write or delete it. |
| 238 | * |
| 239 | * ntfs_inactive(struct vnode *a_vp) |
| 240 | */ |
| 241 | int |
| 242 | ntfs_inactive(struct vop_inactive_args *ap) |
| 243 | { |
| 244 | struct vnode *vp = ap->a_vp; |
| 245 | #ifdef NTFS_DEBUG |
| 246 | struct ntnode *ip = VTONT(vp); |
| 247 | #endif |
| 248 | |
| 249 | dprintf(("ntfs_inactive: vnode: %p, ntnode: %d\n", vp, ip->i_number)); |
| 250 | |
| 251 | if (ntfs_prtactive && vp->v_sysref.refcnt > 1) |
| 252 | vprint("ntfs_inactive: pushing active", vp); |
| 253 | |
| 254 | /* |
| 255 | * XXX since we don't support any filesystem changes |
| 256 | * right now, nothing more needs to be done |
| 257 | */ |
| 258 | return (0); |
| 259 | } |
| 260 | |
| 261 | /* |
| 262 | * Reclaim an fnode/ntnode so that it can be used for other purposes. |
| 263 | * |
| 264 | * ntfs_reclaim(struct vnode *a_vp) |
| 265 | */ |
| 266 | int |
| 267 | ntfs_reclaim(struct vop_reclaim_args *ap) |
| 268 | { |
| 269 | struct vnode *vp = ap->a_vp; |
| 270 | struct fnode *fp = VTOF(vp); |
| 271 | struct ntnode *ip = FTONT(fp); |
| 272 | int error; |
| 273 | |
| 274 | dprintf(("ntfs_reclaim: vnode: %p, ntnode: %d\n", vp, ip->i_number)); |
| 275 | |
| 276 | if (ntfs_prtactive && vp->v_sysref.refcnt > 1) |
| 277 | vprint("ntfs_reclaim: pushing active", vp); |
| 278 | |
| 279 | if ((error = ntfs_ntget(ip)) != 0) |
| 280 | return (error); |
| 281 | |
| 282 | ntfs_frele(fp); |
| 283 | ntfs_ntput(ip); |
| 284 | vp->v_data = NULL; |
| 285 | |
| 286 | return (0); |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * ntfs_print(struct vnode *a_vp) |
| 291 | */ |
| 292 | static int |
| 293 | ntfs_print(struct vop_print_args *ap) |
| 294 | { |
| 295 | return (0); |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * Calculate the logical to physical mapping if not done already, |
| 300 | * then call the device strategy routine. |
| 301 | * |
| 302 | * ntfs_strategy(struct vnode *a_vp, struct bio *a_bio) |
| 303 | */ |
| 304 | int |
| 305 | ntfs_strategy(struct vop_strategy_args *ap) |
| 306 | { |
| 307 | struct bio *bio = ap->a_bio; |
| 308 | struct buf *bp = bio->bio_buf; |
| 309 | struct vnode *vp = ap->a_vp; |
| 310 | struct fnode *fp = VTOF(vp); |
| 311 | struct ntnode *ip = FTONT(fp); |
| 312 | struct ntfsmount *ntmp = ip->i_mp; |
| 313 | u_int32_t toread; |
| 314 | u_int32_t towrite; |
| 315 | size_t tmp; |
| 316 | int error; |
| 317 | |
| 318 | dprintf(("ntfs_strategy: loffset: %lld, doffset: %lld\n", |
| 319 | bp->b_loffset, bio->bio_offset)); |
| 320 | |
| 321 | dprintf(("strategy: bcount: %d flags: 0x%lx\n", |
| 322 | (u_int32_t)bp->b_bcount,bp->b_flags)); |
| 323 | |
| 324 | bp->b_error = 0; |
| 325 | |
| 326 | switch(bp->b_cmd) { |
| 327 | case BUF_CMD_READ: |
| 328 | if (bio->bio_offset >= fp->f_size) { |
| 329 | clrbuf(bp); |
| 330 | error = 0; |
| 331 | } else { |
| 332 | toread = min(bp->b_bcount, |
| 333 | fp->f_size - bio->bio_offset); |
| 334 | dprintf(("ntfs_strategy: toread: %d, fsize: %d\n", |
| 335 | toread,(u_int32_t)fp->f_size)); |
| 336 | |
| 337 | error = ntfs_readattr(ntmp, ip, fp->f_attrtype, |
| 338 | fp->f_attrname, bio->bio_offset, |
| 339 | toread, bp->b_data, NULL); |
| 340 | |
| 341 | if (error) { |
| 342 | kprintf("ntfs_strategy: ntfs_readattr failed\n"); |
| 343 | bp->b_error = error; |
| 344 | bp->b_flags |= B_ERROR; |
| 345 | } |
| 346 | |
| 347 | bzero(bp->b_data + toread, bp->b_bcount - toread); |
| 348 | } |
| 349 | break; |
| 350 | case BUF_CMD_WRITE: |
| 351 | if (bio->bio_offset + bp->b_bcount >= fp->f_size) { |
| 352 | kprintf("ntfs_strategy: CAN'T EXTEND FILE\n"); |
| 353 | bp->b_error = error = EFBIG; |
| 354 | bp->b_flags |= B_ERROR; |
| 355 | } else { |
| 356 | towrite = min(bp->b_bcount, |
| 357 | fp->f_size - bio->bio_offset); |
| 358 | dprintf(("ntfs_strategy: towrite: %d, fsize: %d\n", |
| 359 | towrite,(u_int32_t)fp->f_size)); |
| 360 | |
| 361 | error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, |
| 362 | fp->f_attrname, bio->bio_offset,towrite, |
| 363 | bp->b_data, &tmp, NULL); |
| 364 | |
| 365 | if (error) { |
| 366 | kprintf("ntfs_strategy: ntfs_writeattr fail\n"); |
| 367 | bp->b_error = error; |
| 368 | bp->b_flags |= B_ERROR; |
| 369 | } |
| 370 | } |
| 371 | break; |
| 372 | default: |
| 373 | panic("ntfs: bad b_cmd %d\n", bp->b_cmd); |
| 374 | } |
| 375 | biodone(bio); |
| 376 | return (error); |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * ntfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, |
| 381 | * struct ucred *a_cred) |
| 382 | */ |
| 383 | static int |
| 384 | ntfs_write(struct vop_write_args *ap) |
| 385 | { |
| 386 | struct vnode *vp = ap->a_vp; |
| 387 | struct fnode *fp = VTOF(vp); |
| 388 | struct ntnode *ip = FTONT(fp); |
| 389 | struct uio *uio = ap->a_uio; |
| 390 | struct ntfsmount *ntmp = ip->i_mp; |
| 391 | u_int64_t towrite; |
| 392 | size_t written; |
| 393 | int error; |
| 394 | |
| 395 | 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)); |
| 396 | dprintf(("ntfs_write: filesize: %d",(u_int32_t)fp->f_size)); |
| 397 | |
| 398 | if (uio->uio_resid + uio->uio_offset > fp->f_size) { |
| 399 | kprintf("ntfs_write: CAN'T WRITE BEYOND END OF FILE\n"); |
| 400 | return (EFBIG); |
| 401 | } |
| 402 | |
| 403 | towrite = min(uio->uio_resid, fp->f_size - uio->uio_offset); |
| 404 | |
| 405 | dprintf((", towrite: %d\n",(u_int32_t)towrite)); |
| 406 | |
| 407 | error = ntfs_writeattr_plain(ntmp, ip, fp->f_attrtype, |
| 408 | fp->f_attrname, uio->uio_offset, towrite, NULL, &written, uio); |
| 409 | #ifdef NTFS_DEBUG |
| 410 | if (error) |
| 411 | kprintf("ntfs_write: ntfs_writeattr failed: %d\n", error); |
| 412 | #endif |
| 413 | |
| 414 | return (error); |
| 415 | } |
| 416 | |
| 417 | /* |
| 418 | * ntfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) |
| 419 | */ |
| 420 | int |
| 421 | ntfs_access(struct vop_access_args *ap) |
| 422 | { |
| 423 | struct vnode *vp = ap->a_vp; |
| 424 | struct ntnode *ip = VTONT(vp); |
| 425 | struct ucred *cred = ap->a_cred; |
| 426 | mode_t mask, mode = ap->a_mode; |
| 427 | gid_t *gp; |
| 428 | int i; |
| 429 | #ifdef QUOTA |
| 430 | int error; |
| 431 | #endif |
| 432 | |
| 433 | dprintf(("ntfs_access: %d\n",ip->i_number)); |
| 434 | |
| 435 | /* |
| 436 | * Disallow write attempts on read-only file systems; |
| 437 | * unless the file is a socket, fifo, or a block or |
| 438 | * character device resident on the file system. |
| 439 | */ |
| 440 | if (mode & VWRITE) { |
| 441 | switch ((int)vp->v_type) { |
| 442 | case VDIR: |
| 443 | case VLNK: |
| 444 | case VREG: |
| 445 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
| 446 | return (EROFS); |
| 447 | #ifdef QUOTA |
| 448 | if (error = getinoquota(ip)) |
| 449 | return (error); |
| 450 | #endif |
| 451 | break; |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | /* Otherwise, user id 0 always gets access. */ |
| 456 | if (cred->cr_uid == 0) |
| 457 | return (0); |
| 458 | |
| 459 | mask = 0; |
| 460 | |
| 461 | /* Otherwise, check the owner. */ |
| 462 | if (cred->cr_uid == ip->i_mp->ntm_uid) { |
| 463 | if (mode & VEXEC) |
| 464 | mask |= S_IXUSR; |
| 465 | if (mode & VREAD) |
| 466 | mask |= S_IRUSR; |
| 467 | if (mode & VWRITE) |
| 468 | mask |= S_IWUSR; |
| 469 | return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); |
| 470 | } |
| 471 | |
| 472 | /* Otherwise, check the groups. */ |
| 473 | for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) |
| 474 | if (ip->i_mp->ntm_gid == *gp) { |
| 475 | if (mode & VEXEC) |
| 476 | mask |= S_IXGRP; |
| 477 | if (mode & VREAD) |
| 478 | mask |= S_IRGRP; |
| 479 | if (mode & VWRITE) |
| 480 | mask |= S_IWGRP; |
| 481 | return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES); |
| 482 | } |
| 483 | |
| 484 | /* Otherwise, check everyone else. */ |
| 485 | if (mode & VEXEC) |
| 486 | mask |= S_IXOTH; |
| 487 | if (mode & VREAD) |
| 488 | mask |= S_IROTH; |
| 489 | if (mode & VWRITE) |
| 490 | mask |= S_IWOTH; |
| 491 | return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES); |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * Open called. |
| 496 | * |
| 497 | * Nothing to do. |
| 498 | * |
| 499 | * ntfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, |
| 500 | * struct file *a_fp) |
| 501 | */ |
| 502 | /* ARGSUSED */ |
| 503 | static int |
| 504 | ntfs_open(struct vop_open_args *ap) |
| 505 | { |
| 506 | return (vop_stdopen(ap)); |
| 507 | } |
| 508 | |
| 509 | /* |
| 510 | * Close called. |
| 511 | * |
| 512 | * Update the times on the inode. |
| 513 | * |
| 514 | * ntfs_close(struct vnode *a_vp, int a_fflag) |
| 515 | */ |
| 516 | /* ARGSUSED */ |
| 517 | static int |
| 518 | ntfs_close(struct vop_close_args *ap) |
| 519 | { |
| 520 | #if NTFS_DEBUG |
| 521 | struct vnode *vp = ap->a_vp; |
| 522 | struct ntnode *ip = VTONT(vp); |
| 523 | |
| 524 | kprintf("ntfs_close: %d\n",ip->i_number); |
| 525 | #endif |
| 526 | |
| 527 | return (vop_stdclose(ap)); |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * ntfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, |
| 532 | * int *a_ncookies, off_t **cookies) |
| 533 | */ |
| 534 | int |
| 535 | ntfs_readdir(struct vop_readdir_args *ap) |
| 536 | { |
| 537 | struct vnode *vp = ap->a_vp; |
| 538 | struct fnode *fp = VTOF(vp); |
| 539 | struct ntnode *ip = FTONT(fp); |
| 540 | struct uio *uio = ap->a_uio; |
| 541 | struct ntfsmount *ntmp = ip->i_mp; |
| 542 | int i, error = 0; |
| 543 | u_int32_t faked = 0, num, off; |
| 544 | int ncookies = 0; |
| 545 | char convname[NTFS_MAXFILENAME + 1]; |
| 546 | |
| 547 | dprintf(("ntfs_readdir %d off: %d resid: %d\n",ip->i_number,(u_int32_t)uio->uio_offset,uio->uio_resid)); |
| 548 | |
| 549 | if (uio->uio_offset < 0 || uio->uio_offset > INT_MAX) |
| 550 | return (EINVAL); |
| 551 | if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) != 0) |
| 552 | return (error); |
| 553 | |
| 554 | /* |
| 555 | * uio->uio_offset carries the number of the entry |
| 556 | * where we should start returning dirents. |
| 557 | * |
| 558 | * We fake up "." if we're not reading the FS root |
| 559 | * and we always fake up "..". |
| 560 | * |
| 561 | * off contains the entry we are starting at, |
| 562 | * num increments while we are reading. |
| 563 | */ |
| 564 | |
| 565 | off = num = uio->uio_offset; |
| 566 | faked = (ip->i_number == NTFS_ROOTINO) ? 1 : 2; |
| 567 | |
| 568 | /* Simulate . in every dir except ROOT */ |
| 569 | if (ip->i_number != NTFS_ROOTINO && num == 0) { |
| 570 | if (vop_write_dirent(&error, uio, ip->i_number, |
| 571 | DT_DIR, 1, ".")) |
| 572 | goto done; |
| 573 | if (error) |
| 574 | goto done; |
| 575 | |
| 576 | num++; |
| 577 | ncookies++; |
| 578 | } |
| 579 | |
| 580 | /* Simulate .. in every dir including ROOT */ |
| 581 | if (num == faked - 1) { |
| 582 | /* XXX NTFS_ROOTINO seems to be wrong here */ |
| 583 | if (vop_write_dirent(&error, uio, NTFS_ROOTINO, |
| 584 | DT_DIR, 2, "..")) |
| 585 | goto readdone; |
| 586 | if (error) |
| 587 | goto done; |
| 588 | |
| 589 | num++; |
| 590 | ncookies++; |
| 591 | } |
| 592 | |
| 593 | for (;;) { |
| 594 | struct attr_indexentry *iep; |
| 595 | |
| 596 | /* |
| 597 | * num is the number of the entry we will return, |
| 598 | * but ntfs_ntreaddir takes the entry number of the |
| 599 | * ntfs directory listing, so subtract the faked |
| 600 | * . and .. entries. |
| 601 | */ |
| 602 | error = ntfs_ntreaddir(ntmp, fp, num - faked, &iep); |
| 603 | |
| 604 | if (error) |
| 605 | goto done; |
| 606 | |
| 607 | if( NULL == iep ) |
| 608 | break; |
| 609 | |
| 610 | for (; !(iep->ie_flag & NTFS_IEFLAG_LAST); |
| 611 | iep = NTFS_NEXTREC(iep, struct attr_indexentry *)) |
| 612 | { |
| 613 | if(!ntfs_isnamepermitted(ntmp,iep)) |
| 614 | continue; |
| 615 | |
| 616 | for (i=0; i < iep->ie_fnamelen; i++) |
| 617 | convname[i] = NTFS_U28(iep->ie_fname[i]); |
| 618 | convname[i] = '\0'; |
| 619 | |
| 620 | if (vop_write_dirent(&error, uio, iep->ie_number, |
| 621 | (iep->ie_fflag & NTFS_FFLAG_DIR) ? DT_DIR : DT_REG, |
| 622 | iep->ie_fnamelen, convname)) |
| 623 | goto readdone; |
| 624 | |
| 625 | dprintf(("ntfs_readdir: elem: %d, fname:[%s] type: %d, " |
| 626 | "flag: %d, %s\n", |
| 627 | ncookies, convname, iep->ie_fnametype, |
| 628 | iep->ie_flag, |
| 629 | (iep->ie_fflag & NTFS_FFLAG_DIR) ? |
| 630 | "dir" : "reg")); |
| 631 | |
| 632 | if (error) |
| 633 | goto done; |
| 634 | |
| 635 | ncookies++; |
| 636 | num++; |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | readdone: |
| 641 | uio->uio_offset = num; |
| 642 | |
| 643 | dprintf(("ntfs_readdir: %d entries (%d bytes) read\n", |
| 644 | ncookies,(u_int)(uio->uio_offset - off))); |
| 645 | dprintf(("ntfs_readdir: off: %d resid: %d\n", |
| 646 | (u_int32_t)uio->uio_offset,uio->uio_resid)); |
| 647 | |
| 648 | if (!error && ap->a_ncookies != NULL) { |
| 649 | off_t *cookies; |
| 650 | off_t *cookiep; |
| 651 | |
| 652 | ddprintf(("ntfs_readdir: %d cookies\n",ncookies)); |
| 653 | if (uio->uio_segflg != UIO_SYSSPACE || uio->uio_iovcnt != 1) |
| 654 | panic("ntfs_readdir: unexpected uio from NFS server"); |
| 655 | MALLOC(cookies, off_t *, ncookies * sizeof(off_t), |
| 656 | M_TEMP, M_WAITOK); |
| 657 | cookiep = cookies; |
| 658 | while (off < num) |
| 659 | *cookiep++ = ++off; |
| 660 | |
| 661 | *ap->a_ncookies = ncookies; |
| 662 | *ap->a_cookies = cookies; |
| 663 | } |
| 664 | /* |
| 665 | if (ap->a_eofflag) |
| 666 | *ap->a_eofflag = VTONT(vp)->i_size <= uio->uio_offset; |
| 667 | */ |
| 668 | done: |
| 669 | vn_unlock(vp); |
| 670 | return (error); |
| 671 | } |
| 672 | |
| 673 | /* |
| 674 | * ntfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, |
| 675 | * struct componentname *a_cnp) |
| 676 | */ |
| 677 | int |
| 678 | ntfs_lookup(struct vop_old_lookup_args *ap) |
| 679 | { |
| 680 | struct vnode *dvp = ap->a_dvp; |
| 681 | struct ntnode *dip = VTONT(dvp); |
| 682 | struct ntfsmount *ntmp = dip->i_mp; |
| 683 | struct componentname *cnp = ap->a_cnp; |
| 684 | int error; |
| 685 | int lockparent = cnp->cn_flags & CNP_LOCKPARENT; |
| 686 | #if NTFS_DEBUG |
| 687 | int wantparent = cnp->cn_flags & (CNP_LOCKPARENT | CNP_WANTPARENT); |
| 688 | #endif |
| 689 | dprintf(("ntfs_lookup: \"%.*s\" (%ld bytes) in %d, lp: %d, wp: %d \n", |
| 690 | (int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, |
| 691 | dip->i_number, lockparent, wantparent)); |
| 692 | |
| 693 | *ap->a_vpp = NULL; |
| 694 | |
| 695 | if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { |
| 696 | dprintf(("ntfs_lookup: faking . directory in %d\n", |
| 697 | dip->i_number)); |
| 698 | |
| 699 | vref(dvp); |
| 700 | *ap->a_vpp = dvp; |
| 701 | error = 0; |
| 702 | } else if (cnp->cn_flags & CNP_ISDOTDOT) { |
| 703 | struct ntvattr *vap; |
| 704 | |
| 705 | dprintf(("ntfs_lookup: faking .. directory in %d\n", |
| 706 | dip->i_number)); |
| 707 | |
| 708 | error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME, NULL, 0, &vap); |
| 709 | if(error) |
| 710 | return (error); |
| 711 | |
| 712 | VOP__UNLOCK(dvp, 0); |
| 713 | cnp->cn_flags |= CNP_PDIRUNLOCK; |
| 714 | |
| 715 | dprintf(("ntfs_lookup: parentdir: %d\n", |
| 716 | vap->va_a_name->n_pnumber)); |
| 717 | error = VFS_VGET(ntmp->ntm_mountp, |
| 718 | vap->va_a_name->n_pnumber,ap->a_vpp); |
| 719 | ntfs_ntvattrrele(vap); |
| 720 | if (error) { |
| 721 | if (VN_LOCK(dvp, LK_EXCLUSIVE | LK_RETRY) == 0) |
| 722 | cnp->cn_flags &= ~CNP_PDIRUNLOCK; |
| 723 | return (error); |
| 724 | } |
| 725 | |
| 726 | if (lockparent) { |
| 727 | error = VN_LOCK(dvp, LK_EXCLUSIVE); |
| 728 | if (error) { |
| 729 | vput(*ap->a_vpp); |
| 730 | *ap->a_vpp = NULL; |
| 731 | return (error); |
| 732 | } |
| 733 | cnp->cn_flags &= ~CNP_PDIRUNLOCK; |
| 734 | } |
| 735 | } else { |
| 736 | error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); |
| 737 | if (error) { |
| 738 | dprintf(("ntfs_ntlookupfile: returned %d\n", error)); |
| 739 | return (error); |
| 740 | } |
| 741 | |
| 742 | dprintf(("ntfs_lookup: found ino: %d\n", |
| 743 | VTONT(*ap->a_vpp)->i_number)); |
| 744 | |
| 745 | if (!lockparent) |
| 746 | VOP__UNLOCK(dvp, 0); |
| 747 | } |
| 748 | return (error); |
| 749 | } |
| 750 | |
| 751 | #if defined(__DragonFly__) |
| 752 | /* |
| 753 | * Flush the blocks of a file to disk. |
| 754 | * |
| 755 | * This function is worthless for vnodes that represent directories. Maybe we |
| 756 | * could just do a sync if they try an fsync on a directory file. |
| 757 | * |
| 758 | * ntfs_fsync(struct vnode *a_vp, int a_waitfor) |
| 759 | */ |
| 760 | static int |
| 761 | ntfs_fsync(struct vop_fsync_args *ap) |
| 762 | { |
| 763 | return (0); |
| 764 | } |
| 765 | #endif |
| 766 | |
| 767 | /* |
| 768 | * Return POSIX pathconf information applicable to NTFS filesystem |
| 769 | */ |
| 770 | int |
| 771 | ntfs_pathconf(struct vop_pathconf_args *ap) |
| 772 | { |
| 773 | switch (ap->a_name) { |
| 774 | case _PC_LINK_MAX: |
| 775 | *ap->a_retval = 1; |
| 776 | return (0); |
| 777 | case _PC_NAME_MAX: |
| 778 | *ap->a_retval = NTFS_MAXFILENAME; |
| 779 | return (0); |
| 780 | case _PC_PATH_MAX: |
| 781 | *ap->a_retval = PATH_MAX; |
| 782 | return (0); |
| 783 | case _PC_CHOWN_RESTRICTED: |
| 784 | *ap->a_retval = 1; |
| 785 | return (0); |
| 786 | case _PC_NO_TRUNC: |
| 787 | *ap->a_retval = 0; |
| 788 | return (0); |
| 789 | #if defined(__NetBSD__) |
| 790 | case _PC_SYNC_IO: |
| 791 | *ap->a_retval = 1; |
| 792 | return (0); |
| 793 | case _PC_FILESIZEBITS: |
| 794 | *ap->a_retval = 64; |
| 795 | return (0); |
| 796 | #endif |
| 797 | default: |
| 798 | return (EINVAL); |
| 799 | } |
| 800 | /* NOTREACHED */ |
| 801 | } |
| 802 | |
| 803 | /* |
| 804 | * Global vfs data structures |
| 805 | */ |
| 806 | struct vop_ops ntfs_vnode_vops = { |
| 807 | .vop_default = vop_defaultop, |
| 808 | .vop_getattr = ntfs_getattr, |
| 809 | .vop_inactive = ntfs_inactive, |
| 810 | .vop_reclaim = ntfs_reclaim, |
| 811 | .vop_print = ntfs_print, |
| 812 | .vop_pathconf = ntfs_pathconf, |
| 813 | .vop_old_lookup = ntfs_lookup, |
| 814 | .vop_access = ntfs_access, |
| 815 | .vop_close = ntfs_close, |
| 816 | .vop_open = ntfs_open, |
| 817 | .vop_readdir = ntfs_readdir, |
| 818 | .vop_fsync = ntfs_fsync, |
| 819 | .vop_bmap = ntfs_bmap, |
| 820 | .vop_getpages = vop_stdgetpages, |
| 821 | .vop_putpages = vop_stdputpages, |
| 822 | .vop_strategy = ntfs_strategy, |
| 823 | .vop_read = ntfs_read, |
| 824 | .vop_write = ntfs_write |
| 825 | }; |
| 826 | |