| File: | ntfs/ntfs_vnops.c |
| Warning: | line 425, column 2 Value stored to 'off' is never read |
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| 1 | /* $OpenBSD: ntfs_vnops.c,v 1.47 2021/10/15 06:30:06 semarie Exp $ */ |
| 2 | /* $NetBSD: ntfs_vnops.c,v 1.6 2003/04/10 21:57:26 jdolecek Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 1992, 1993 |
| 6 | * The Regents of the University of California. All rights reserved. |
| 7 | * |
| 8 | * This code is derived from software contributed to Berkeley by |
| 9 | * John Heidemann of the UCLA Ficus project. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. Neither the name of the University nor the names of its contributors |
| 20 | * may be used to endorse or promote products derived from this software |
| 21 | * without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 33 | * SUCH DAMAGE. |
| 34 | * |
| 35 | * Id: ntfs_vnops.c,v 1.5 1999/05/12 09:43:06 semenu Exp |
| 36 | * |
| 37 | */ |
| 38 | |
| 39 | #include <sys/param.h> |
| 40 | #include <sys/systm.h> |
| 41 | #include <sys/time.h> |
| 42 | #include <sys/stat.h> |
| 43 | #include <sys/vnode.h> |
| 44 | #include <sys/lock.h> |
| 45 | #include <sys/mount.h> |
| 46 | #include <sys/namei.h> |
| 47 | #include <sys/malloc.h> |
| 48 | #include <sys/buf.h> |
| 49 | #include <sys/dirent.h> |
| 50 | #include <sys/specdev.h> |
| 51 | |
| 52 | /*#define NTFS_DEBUG 1*/ |
| 53 | #include <ntfs/ntfs.h> |
| 54 | #include <ntfs/ntfs_inode.h> |
| 55 | #include <ntfs/ntfs_subr.h> |
| 56 | |
| 57 | #include <sys/unistd.h> /* for pathconf(2) constants */ |
| 58 | |
| 59 | int ntfs_read(void *); |
| 60 | int ntfs_getattr(void *); |
| 61 | int ntfs_inactive(void *); |
| 62 | int ntfs_print(void *); |
| 63 | int ntfs_reclaim(void *); |
| 64 | int ntfs_strategy(void *); |
| 65 | int ntfs_access(void *v); |
| 66 | int ntfs_open(void *v); |
| 67 | int ntfs_close(void *); |
| 68 | int ntfs_readdir(void *); |
| 69 | int ntfs_lookup(void *); |
| 70 | int ntfs_bmap(void *); |
| 71 | int ntfs_fsync(void *); |
| 72 | int ntfs_pathconf(void *); |
| 73 | |
| 74 | int ntfs_prtactive = 0; /* 1 => print out reclaim of active vnodes */ |
| 75 | |
| 76 | /* |
| 77 | * This is a noop, simply returning what one has been given. |
| 78 | */ |
| 79 | int |
| 80 | ntfs_bmap(void *v) |
| 81 | { |
| 82 | struct vop_bmap_args *ap = v; |
| 83 | DPRINTF("ntfs_bmap: vn: %p, blk: %lld\n", |
| 84 | ap->a_vp, (long long)ap->a_bn); |
| 85 | if (ap->a_vpp != NULL((void *)0)) |
| 86 | *ap->a_vpp = ap->a_vp; |
| 87 | if (ap->a_bnp != NULL((void *)0)) |
| 88 | *ap->a_bnp = ap->a_bn; |
| 89 | if (ap->a_runp != NULL((void *)0)) |
| 90 | *ap->a_runp = 0; |
| 91 | return (0); |
| 92 | } |
| 93 | |
| 94 | int |
| 95 | ntfs_read(void *v) |
| 96 | { |
| 97 | struct vop_read_args *ap = v; |
| 98 | struct vnode *vp = ap->a_vp; |
| 99 | struct fnode *fp = VTOF(vp)((struct fnode *)((vp)->v_data)); |
| 100 | struct ntnode *ip = FTONT(fp)((fp)->f_ip); |
| 101 | struct uio *uio = ap->a_uio; |
| 102 | struct ntfsmount *ntmp = ip->i_mp; |
| 103 | u_int64_t toread; |
| 104 | int error; |
| 105 | |
| 106 | DPRINTF("ntfs_read: ino: %u, off: %lld resid: %zu, segflg: %d\n", |
| 107 | ip->i_number, uio->uio_offset, uio->uio_resid, uio->uio_segflg); |
| 108 | |
| 109 | DPRINTF("ntfs_read: filesize: %llu", fp->f_size); |
| 110 | |
| 111 | /* don't allow reading after end of file */ |
| 112 | if (uio->uio_offset > fp->f_size) |
| 113 | toread = 0; |
| 114 | else |
| 115 | toread = MIN(uio->uio_resid, fp->f_size - uio->uio_offset)(((uio->uio_resid)<(fp->f_size - uio->uio_offset) )?(uio->uio_resid):(fp->f_size - uio->uio_offset)); |
| 116 | |
| 117 | DPRINTF(", toread: %llu\n", toread); |
| 118 | |
| 119 | if (toread == 0) |
| 120 | return (0); |
| 121 | |
| 122 | error = ntfs_readattr(ntmp, ip, fp->f_attrtype, |
| 123 | fp->f_attrname, uio->uio_offset, toread, NULL((void *)0), uio); |
| 124 | if (error) { |
| 125 | printf("ntfs_read: ntfs_readattr failed: %d\n",error); |
| 126 | return (error); |
| 127 | } |
| 128 | |
| 129 | return (0); |
| 130 | } |
| 131 | |
| 132 | int |
| 133 | ntfs_getattr(void *v) |
| 134 | { |
| 135 | struct vop_getattr_args *ap = v; |
| 136 | struct vnode *vp = ap->a_vp; |
| 137 | struct fnode *fp = VTOF(vp)((struct fnode *)((vp)->v_data)); |
| 138 | struct ntnode *ip = FTONT(fp)((fp)->f_ip); |
| 139 | struct vattr *vap = ap->a_vap; |
| 140 | |
| 141 | DPRINTF("ntfs_getattr: %u, flags: %u\n", ip->i_number, ip->i_flag); |
| 142 | |
| 143 | vap->va_fsid = ip->i_dev; |
| 144 | vap->va_fileid = ip->i_number; |
| 145 | vap->va_mode = ip->i_mp->ntm_mode; |
| 146 | vap->va_nlink = ip->i_nlink; |
| 147 | vap->va_uid = ip->i_mp->ntm_uid; |
| 148 | vap->va_gid = ip->i_mp->ntm_gid; |
| 149 | vap->va_rdev = 0; /* XXX UNODEV ? */ |
| 150 | vap->va_size = fp->f_size; |
| 151 | vap->va_bytes = fp->f_allocated; |
| 152 | vap->va_atime = ntfs_nttimetounix(fp->f_times.t_access); |
| 153 | vap->va_mtime = ntfs_nttimetounix(fp->f_times.t_write); |
| 154 | vap->va_ctime = ntfs_nttimetounix(fp->f_times.t_create); |
| 155 | vap->va_flags = ip->i_flag; |
| 156 | vap->va_gen = 0; |
| 157 | vap->va_blocksize = ip->i_mp->ntm_spcntm_bootfile.bf_spc * ip->i_mp->ntm_bpsntm_bootfile.bf_bps; |
| 158 | vap->va_type = vp->v_type; |
| 159 | vap->va_filerev = 0; |
| 160 | |
| 161 | /* |
| 162 | * Ensure that a directory link count is always 1 so that things |
| 163 | * like fts_read() do not try to be smart and end up skipping over |
| 164 | * directories. Additionally, ip->i_nlink will not be initialised |
| 165 | * until the ntnode has been loaded for the file. |
| 166 | */ |
| 167 | if (vp->v_type == VDIR || ip->i_nlink < 1) |
| 168 | vap->va_nlink = 1; |
| 169 | |
| 170 | return (0); |
| 171 | } |
| 172 | |
| 173 | |
| 174 | /* |
| 175 | * Last reference to an ntnode. If necessary, write or delete it. |
| 176 | */ |
| 177 | int |
| 178 | ntfs_inactive(void *v) |
| 179 | { |
| 180 | struct vop_inactive_args *ap = v; |
| 181 | struct vnode *vp = ap->a_vp; |
| 182 | #ifdef NTFS_DEBUG |
| 183 | struct ntnode *ip = VTONT(vp)((((struct fnode *)((vp)->v_data)))->f_ip); |
| 184 | #endif |
| 185 | |
| 186 | DPRINTF("ntfs_inactive: vnode: %p, ntnode: %u\n", vp, ip->i_number); |
| 187 | |
| 188 | #ifdef DIAGNOSTIC1 |
| 189 | if (ntfs_prtactive && vp->v_usecount != 0) |
| 190 | vprint("ntfs_inactive: pushing active", vp); |
| 191 | #endif |
| 192 | |
| 193 | VOP_UNLOCK(vp); |
| 194 | |
| 195 | /* XXX since we don't support any filesystem changes |
| 196 | * right now, nothing more needs to be done |
| 197 | */ |
| 198 | return (0); |
| 199 | } |
| 200 | |
| 201 | /* |
| 202 | * Reclaim an fnode/ntnode so that it can be used for other purposes. |
| 203 | */ |
| 204 | int |
| 205 | ntfs_reclaim(void *v) |
| 206 | { |
| 207 | struct vop_reclaim_args *ap = v; |
| 208 | struct vnode *vp = ap->a_vp; |
| 209 | struct fnode *fp = VTOF(vp)((struct fnode *)((vp)->v_data)); |
| 210 | struct ntnode *ip = FTONT(fp)((fp)->f_ip); |
| 211 | int error; |
| 212 | |
| 213 | DPRINTF("ntfs_reclaim: vnode: %p, ntnode: %u\n", vp, ip->i_number); |
| 214 | |
| 215 | #ifdef DIAGNOSTIC1 |
| 216 | if (ntfs_prtactive && vp->v_usecount != 0) |
| 217 | vprint("ntfs_reclaim: pushing active", vp); |
| 218 | #endif |
| 219 | |
| 220 | if ((error = ntfs_ntget(ip)) != 0) |
| 221 | return (error); |
| 222 | |
| 223 | /* Purge old data structures associated with the inode. */ |
| 224 | cache_purge(vp); |
| 225 | |
| 226 | ntfs_frele(fp); |
| 227 | ntfs_ntput(ip); |
| 228 | |
| 229 | vp->v_data = NULL((void *)0); |
| 230 | |
| 231 | return (0); |
| 232 | } |
| 233 | |
| 234 | int |
| 235 | ntfs_print(void *v) |
| 236 | { |
| 237 | struct vop_print_args *ap = v; |
| 238 | struct ntnode *ip = VTONT(ap->a_vp)((((struct fnode *)((ap->a_vp)->v_data)))->f_ip); |
| 239 | |
| 240 | printf("tag VT_NTFS, ino %u, flag %#x, usecount %d, nlink %ld\n", |
| 241 | ip->i_number, ip->i_flag, ip->i_usecount, ip->i_nlink); |
| 242 | |
| 243 | return (0); |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | * Calculate the logical to physical mapping if not done already, |
| 248 | * then call the device strategy routine. |
| 249 | */ |
| 250 | int |
| 251 | ntfs_strategy(void *v) |
| 252 | { |
| 253 | struct vop_strategy_args *ap = v; |
| 254 | struct buf *bp = ap->a_bp; |
| 255 | struct vnode *vp = bp->b_vp; |
| 256 | struct fnode *fp = VTOF(vp)((struct fnode *)((vp)->v_data)); |
| 257 | struct ntnode *ip = FTONT(fp)((fp)->f_ip); |
| 258 | struct ntfsmount *ntmp = ip->i_mp; |
| 259 | int error, s; |
| 260 | |
| 261 | DPRINTF("ntfs_strategy: blkno: %lld, lblkno: %lld\n", |
| 262 | (long long)bp->b_blkno, (long long)bp->b_lblkno); |
| 263 | |
| 264 | DPRINTF("strategy: bcount: %ld flags: 0x%lx\n", |
| 265 | bp->b_bcount, bp->b_flags); |
| 266 | |
| 267 | if (bp->b_flags & B_READ0x00008000) { |
| 268 | u_int32_t toread; |
| 269 | |
| 270 | if (ntfs_cntob(bp->b_blkno)(off_t)((bp->b_blkno) * (ntmp)->ntm_bootfile.bf_spc * ( ntmp)->ntm_bootfile.bf_bps) >= fp->f_size) { |
| 271 | clrbuf(bp){ __builtin_bzero(((bp)->b_data), ((bp)->b_bcount)); (bp )->b_resid = 0; }; |
| 272 | error = 0; |
| 273 | } else { |
| 274 | toread = MIN(bp->b_bcount,(((bp->b_bcount)<(fp->f_size - (off_t)((bp->b_blkno ) * (ntmp)->ntm_bootfile.bf_spc * (ntmp)->ntm_bootfile. bf_bps)))?(bp->b_bcount):(fp->f_size - (off_t)((bp-> b_blkno) * (ntmp)->ntm_bootfile.bf_spc * (ntmp)->ntm_bootfile .bf_bps))) |
| 275 | fp->f_size - ntfs_cntob(bp->b_blkno))(((bp->b_bcount)<(fp->f_size - (off_t)((bp->b_blkno ) * (ntmp)->ntm_bootfile.bf_spc * (ntmp)->ntm_bootfile. bf_bps)))?(bp->b_bcount):(fp->f_size - (off_t)((bp-> b_blkno) * (ntmp)->ntm_bootfile.bf_spc * (ntmp)->ntm_bootfile .bf_bps))); |
| 276 | DPRINTF("ntfs_strategy: toread: %u, fsize: %llu\n", |
| 277 | toread, fp->f_size); |
| 278 | |
| 279 | error = ntfs_readattr(ntmp, ip, fp->f_attrtype, |
| 280 | fp->f_attrname, ntfs_cntob(bp->b_blkno)(off_t)((bp->b_blkno) * (ntmp)->ntm_bootfile.bf_spc * ( ntmp)->ntm_bootfile.bf_bps), |
| 281 | toread, bp->b_data, NULL((void *)0)); |
| 282 | |
| 283 | if (error) { |
| 284 | printf("ntfs_strategy: ntfs_readattr failed\n"); |
| 285 | bp->b_error = error; |
| 286 | bp->b_flags |= B_ERROR0x00000400; |
| 287 | } |
| 288 | |
| 289 | bzero(bp->b_data + toread, bp->b_bcount - toread)__builtin_bzero((bp->b_data + toread), (bp->b_bcount - toread )); |
| 290 | } |
| 291 | } else { |
| 292 | bp->b_error = error = EROFS30; |
| 293 | bp->b_flags |= B_ERROR0x00000400; |
| 294 | } |
| 295 | s = splbio()splraise(0x6); |
| 296 | biodone(bp); |
| 297 | splx(s)spllower(s); |
| 298 | return (error); |
| 299 | } |
| 300 | |
| 301 | int |
| 302 | ntfs_access(void *v) |
| 303 | { |
| 304 | struct vop_access_args *ap = v; |
| 305 | struct vnode *vp = ap->a_vp; |
| 306 | struct ntnode *ip = VTONT(vp)((((struct fnode *)((vp)->v_data)))->f_ip); |
| 307 | struct ucred *cred = ap->a_cred; |
| 308 | mode_t mask, mode = ap->a_mode; |
| 309 | gid_t *gp; |
| 310 | int i; |
| 311 | |
| 312 | DPRINTF("ntfs_access: %u\n", ip->i_number); |
| 313 | |
| 314 | /* |
| 315 | * Disallow write attempts unless the file is a socket, fifo, or |
| 316 | * a block or character device resident on the file system. |
| 317 | */ |
| 318 | if (mode & VWRITE00200) { |
| 319 | switch ((int)vp->v_type) { |
| 320 | case VDIR: |
| 321 | case VLNK: |
| 322 | case VREG: |
| 323 | return (EROFS30); |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | /* Otherwise, user id 0 always gets access. */ |
| 328 | if (cred->cr_uid == 0) |
| 329 | return (0); |
| 330 | |
| 331 | mask = 0; |
| 332 | |
| 333 | /* Otherwise, check the owner. */ |
| 334 | if (cred->cr_uid == ip->i_mp->ntm_uid) { |
| 335 | if (mode & VEXEC00100) |
| 336 | mask |= S_IXUSR0000100; |
| 337 | if (mode & VREAD00400) |
| 338 | mask |= S_IRUSR0000400; |
| 339 | if (mode & VWRITE00200) |
| 340 | mask |= S_IWUSR0000200; |
| 341 | return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES13); |
| 342 | } |
| 343 | |
| 344 | /* Otherwise, check the groups. */ |
| 345 | for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++) |
| 346 | if (ip->i_mp->ntm_gid == *gp) { |
| 347 | if (mode & VEXEC00100) |
| 348 | mask |= S_IXGRP0000010; |
| 349 | if (mode & VREAD00400) |
| 350 | mask |= S_IRGRP0000040; |
| 351 | if (mode & VWRITE00200) |
| 352 | mask |= S_IWGRP0000020; |
| 353 | return ((ip->i_mp->ntm_mode&mask) == mask ? 0 : EACCES13); |
| 354 | } |
| 355 | |
| 356 | /* Otherwise, check everyone else. */ |
| 357 | if (mode & VEXEC00100) |
| 358 | mask |= S_IXOTH0000001; |
| 359 | if (mode & VREAD00400) |
| 360 | mask |= S_IROTH0000004; |
| 361 | if (mode & VWRITE00200) |
| 362 | mask |= S_IWOTH0000002; |
| 363 | return ((ip->i_mp->ntm_mode & mask) == mask ? 0 : EACCES13); |
| 364 | } |
| 365 | |
| 366 | /* |
| 367 | * Open called. |
| 368 | * |
| 369 | * Nothing to do. |
| 370 | */ |
| 371 | int |
| 372 | ntfs_open(void *v) |
| 373 | { |
| 374 | #if NTFS_DEBUG |
| 375 | struct vop_open_args *ap = v; |
| 376 | struct vnode *vp = ap->a_vp; |
| 377 | struct ntnode *ip = VTONT(vp)((((struct fnode *)((vp)->v_data)))->f_ip); |
| 378 | |
| 379 | printf("ntfs_open: %d\n",ip->i_number); |
| 380 | #endif |
| 381 | |
| 382 | /* |
| 383 | * Files marked append-only must be opened for appending. |
| 384 | */ |
| 385 | |
| 386 | return (0); |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Close called. |
| 391 | * |
| 392 | * Update the times on the inode. |
| 393 | */ |
| 394 | int |
| 395 | ntfs_close(void *v) |
| 396 | { |
| 397 | #if NTFS_DEBUG |
| 398 | struct vop_close_args *ap = v; |
| 399 | struct vnode *vp = ap->a_vp; |
| 400 | struct ntnode *ip = VTONT(vp)((((struct fnode *)((vp)->v_data)))->f_ip); |
| 401 | |
| 402 | printf("ntfs_close: %d\n",ip->i_number); |
| 403 | #endif |
| 404 | |
| 405 | return (0); |
| 406 | } |
| 407 | |
| 408 | int |
| 409 | ntfs_readdir(void *v) |
| 410 | { |
| 411 | struct vop_readdir_args *ap = v; |
| 412 | struct vnode *vp = ap->a_vp; |
| 413 | struct fnode *fp = VTOF(vp)((struct fnode *)((vp)->v_data)); |
| 414 | struct ntnode *ip = FTONT(fp)((fp)->f_ip); |
| 415 | struct uio *uio = ap->a_uio; |
| 416 | struct ntfsmount *ntmp = ip->i_mp; |
| 417 | int i, error = 0; |
| 418 | u_int32_t faked = 0, num; |
| 419 | struct dirent cde; |
| 420 | off_t off; |
| 421 | |
| 422 | DPRINTF("ntfs_readdir %u off: %lld resid: %zu\n", ip->i_number, |
| 423 | uio->uio_offset, uio->uio_resid); |
| 424 | |
| 425 | off = uio->uio_offset; |
Value stored to 'off' is never read | |
| 426 | memset(&cde, 0, sizeof(cde))__builtin_memset((&cde), (0), (sizeof(cde))); |
| 427 | |
| 428 | /* Simulate . in every dir except ROOT */ |
| 429 | if (ip->i_number != NTFS_ROOTINO5 && uio->uio_offset == 0) { |
| 430 | cde.d_fileno = ip->i_number; |
| 431 | cde.d_reclen = sizeof(struct dirent); |
| 432 | cde.d_type = DT_DIR4; |
| 433 | cde.d_namlen = 1; |
| 434 | cde.d_off = sizeof(struct dirent); |
| 435 | cde.d_name[0] = '.'; |
| 436 | cde.d_name[1] = '\0'; |
| 437 | error = uiomove(&cde, sizeof(struct dirent), uio); |
| 438 | if (error) |
| 439 | goto out; |
| 440 | } |
| 441 | |
| 442 | /* Simulate .. in every dir including ROOT */ |
| 443 | if (uio->uio_offset < 2 * sizeof(struct dirent)) { |
| 444 | cde.d_fileno = NTFS_ROOTINO5; /* XXX */ |
| 445 | cde.d_reclen = sizeof(struct dirent); |
| 446 | cde.d_type = DT_DIR4; |
| 447 | cde.d_namlen = 2; |
| 448 | cde.d_off = 2 * sizeof(struct dirent); |
| 449 | cde.d_name[0] = '.'; |
| 450 | cde.d_name[1] = '.'; |
| 451 | cde.d_name[2] = '\0'; |
| 452 | error = uiomove(&cde, sizeof(struct dirent), uio); |
| 453 | if (error) |
| 454 | goto out; |
| 455 | } |
| 456 | |
| 457 | faked = (ip->i_number == NTFS_ROOTINO5) ? 1 : 2; |
| 458 | num = uio->uio_offset / sizeof(struct dirent) - faked; |
| 459 | |
| 460 | while (uio->uio_resid >= sizeof(struct dirent)) { |
| 461 | struct attr_indexentry *iep; |
| 462 | char *fname; |
| 463 | size_t remains; |
| 464 | int sz; |
| 465 | |
| 466 | error = ntfs_ntreaddir(ntmp, fp, num, &iep, uio->uio_procp); |
| 467 | if (error) |
| 468 | goto out; |
| 469 | |
| 470 | if (NULL((void *)0) == iep) |
| 471 | break; |
| 472 | |
| 473 | for(; !(iep->ie_flag & NTFS_IEFLAG_LAST0x00000002) && (uio->uio_resid >= sizeof(struct dirent)); |
| 474 | iep = NTFS_NEXTREC(iep, struct attr_indexentry *)((struct attr_indexentry *)(((caddr_t) iep) + (iep)->reclen ))) |
| 475 | { |
| 476 | if(!ntfs_isnamepermitted(ntmp,iep)) |
| 477 | continue; |
| 478 | |
| 479 | remains = sizeof(cde.d_name) - 1; |
| 480 | fname = cde.d_name; |
| 481 | for(i=0; i<iep->ie_fnamelen; i++) { |
| 482 | sz = (*ntmp->ntm_wput)(fname, remains, |
| 483 | iep->ie_fname[i]); |
| 484 | fname += sz; |
| 485 | remains -= sz; |
| 486 | } |
| 487 | *fname = '\0'; |
| 488 | DPRINTF("ntfs_readdir: elem: %u, fname:[%s] type: %u, " |
| 489 | "flag: %u, ", |
| 490 | num, cde.d_name, iep->ie_fnametype, iep->ie_flag); |
| 491 | cde.d_namlen = fname - (char *) cde.d_name; |
| 492 | cde.d_fileno = iep->ie_number; |
| 493 | cde.d_type = (iep->ie_fflag & NTFS_FFLAG_DIR0x10000000LL) ? DT_DIR4 : DT_REG8; |
| 494 | cde.d_reclen = sizeof(struct dirent); |
| 495 | cde.d_off = uio->uio_offset + sizeof(struct dirent); |
| 496 | DPRINTF("%s\n", cde.d_type == DT_DIR ? "dir" : "reg"); |
| 497 | |
| 498 | error = uiomove(&cde, sizeof(struct dirent), uio); |
| 499 | if (error) |
| 500 | goto out; |
| 501 | num++; |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | DPRINTF("ntfs_readdir: %u entries (%lld bytes) read\n", |
| 506 | num, uio->uio_offset - off); |
| 507 | DPRINTF("ntfs_readdir: off: %lld resid: %zu\n", |
| 508 | uio->uio_offset, uio->uio_resid); |
| 509 | |
| 510 | /* |
| 511 | if (ap->a_eofflag) |
| 512 | *ap->a_eofflag = VTONT(ap->a_vp)->i_size <= uio->uio_offset; |
| 513 | */ |
| 514 | out: |
| 515 | if (fp->f_dirblbuf != NULL((void *)0)) { |
| 516 | free(fp->f_dirblbuf, M_NTFSDIR131, 0); |
| 517 | fp->f_dirblbuf = NULL((void *)0); |
| 518 | } |
| 519 | return (error); |
| 520 | } |
| 521 | |
| 522 | int |
| 523 | ntfs_lookup(void *v) |
| 524 | { |
| 525 | struct vop_lookup_args *ap = v; |
| 526 | struct vnode *dvp = ap->a_dvp; |
| 527 | struct ntnode *dip = VTONT(dvp)((((struct fnode *)((dvp)->v_data)))->f_ip); |
| 528 | struct ntfsmount *ntmp = dip->i_mp; |
| 529 | struct componentname *cnp = ap->a_cnp; |
| 530 | struct ucred *cred = cnp->cn_cred; |
| 531 | int error; |
| 532 | int lockparent = cnp->cn_flags & LOCKPARENT0x0008; |
| 533 | #if NTFS_DEBUG |
| 534 | int wantparent = cnp->cn_flags & (LOCKPARENT0x0008|WANTPARENT0x0010); |
| 535 | #endif |
| 536 | DPRINTF("ntfs_lookup: \"%.*s\" (%ld bytes) in %u, lp: %d, wp: %d \n", |
| 537 | (unsigned int)cnp->cn_namelen, cnp->cn_nameptr, cnp->cn_namelen, |
| 538 | dip->i_number, lockparent, wantparent); |
| 539 | |
| 540 | error = VOP_ACCESS(dvp, VEXEC00100, cred, cnp->cn_proc); |
| 541 | if(error) |
| 542 | return (error); |
| 543 | |
| 544 | if ((cnp->cn_flags & ISLASTCN0x008000) && |
| 545 | (cnp->cn_nameiop == DELETE2 || cnp->cn_nameiop == RENAME3)) |
| 546 | return (EROFS30); |
| 547 | |
| 548 | /* |
| 549 | * We now have a segment name to search for, and a directory |
| 550 | * to search. |
| 551 | * |
| 552 | * Before tediously performing a linear scan of the directory, |
| 553 | * check the name cache to see if the directory/name pair |
| 554 | * we are looking for is known already. |
| 555 | */ |
| 556 | if ((error = cache_lookup(ap->a_dvp, ap->a_vpp, cnp)) >= 0) |
| 557 | return (error); |
| 558 | |
| 559 | if(cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') { |
| 560 | DPRINTF("ntfs_lookup: faking . directory in %u\n", |
| 561 | dip->i_number); |
| 562 | |
| 563 | vref(dvp); |
| 564 | *ap->a_vpp = dvp; |
| 565 | error = 0; |
| 566 | } else if (cnp->cn_flags & ISDOTDOT0x002000) { |
| 567 | struct ntvattr *vap; |
| 568 | |
| 569 | DPRINTF("ntfs_lookup: faking .. directory in %u\n", |
| 570 | dip->i_number); |
| 571 | |
| 572 | VOP_UNLOCK(dvp); |
| 573 | cnp->cn_flags |= PDIRUNLOCK0x200000; |
| 574 | |
| 575 | error = ntfs_ntvattrget(ntmp, dip, NTFS_A_NAME0x30, NULL((void *)0), 0, &vap); |
| 576 | if(error) |
| 577 | return (error); |
| 578 | |
| 579 | DPRINTF("ntfs_lookup: parentdir: %u\n", |
| 580 | vap->va_a_name->n_pnumber); |
| 581 | error = VFS_VGET(ntmp->ntm_mountp,(*(ntmp->ntm_mountp)->mnt_op->vfs_vget)(ntmp->ntm_mountp , vap->va_d.name->n_pnumber, ap->a_vpp) |
| 582 | vap->va_a_name->n_pnumber,ap->a_vpp)(*(ntmp->ntm_mountp)->mnt_op->vfs_vget)(ntmp->ntm_mountp , vap->va_d.name->n_pnumber, ap->a_vpp); |
| 583 | ntfs_ntvattrrele(vap); |
| 584 | if (error) { |
| 585 | if (vn_lock(dvp, LK_EXCLUSIVE0x0001UL | LK_RETRY0x2000UL) == 0) |
| 586 | cnp->cn_flags &= ~PDIRUNLOCK0x200000; |
| 587 | return (error); |
| 588 | } |
| 589 | |
| 590 | if (lockparent && (cnp->cn_flags & ISLASTCN0x008000)) { |
| 591 | error = vn_lock(dvp, LK_EXCLUSIVE0x0001UL); |
| 592 | if (error) { |
| 593 | vput( *(ap->a_vpp) ); |
| 594 | return (error); |
| 595 | } |
| 596 | cnp->cn_flags &= ~PDIRUNLOCK0x200000; |
| 597 | } |
| 598 | } else { |
| 599 | error = ntfs_ntlookupfile(ntmp, dvp, cnp, ap->a_vpp); |
| 600 | if (error) { |
| 601 | DPRINTF("ntfs_ntlookupfile: returned %d\n", error); |
| 602 | return (error); |
| 603 | } |
| 604 | |
| 605 | DPRINTF("ntfs_lookup: found ino: %u\n", |
| 606 | VTONT(*ap->a_vpp)->i_number); |
| 607 | |
| 608 | if(!lockparent || (cnp->cn_flags & ISLASTCN0x008000) == 0) { |
| 609 | VOP_UNLOCK(dvp); |
| 610 | cnp->cn_flags |= PDIRUNLOCK0x200000; |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | if (cnp->cn_flags & MAKEENTRY0x004000) |
| 615 | cache_enter(dvp, *ap->a_vpp, cnp); |
| 616 | |
| 617 | return (error); |
| 618 | } |
| 619 | |
| 620 | /* |
| 621 | * Flush the blocks of a file to disk. |
| 622 | * |
| 623 | * This function is worthless for vnodes that represent directories. Maybe we |
| 624 | * could just do a sync if they try an fsync on a directory file. |
| 625 | */ |
| 626 | int |
| 627 | ntfs_fsync(void *v) |
| 628 | { |
| 629 | return (0); |
| 630 | } |
| 631 | |
| 632 | /* |
| 633 | * Return POSIX pathconf information applicable to NTFS filesystem |
| 634 | */ |
| 635 | int |
| 636 | ntfs_pathconf(void *v) |
| 637 | { |
| 638 | struct vop_pathconf_args *ap = v; |
| 639 | int error = 0; |
| 640 | |
| 641 | switch (ap->a_name) { |
| 642 | case _PC_LINK_MAX1: |
| 643 | *ap->a_retval = 1; |
| 644 | break; |
| 645 | case _PC_NAME_MAX4: |
| 646 | *ap->a_retval = NTFS_MAXFILENAME255; |
| 647 | break; |
| 648 | case _PC_CHOWN_RESTRICTED7: |
| 649 | *ap->a_retval = 1; |
| 650 | break; |
| 651 | case _PC_NO_TRUNC8: |
| 652 | *ap->a_retval = 0; |
| 653 | break; |
| 654 | default: |
| 655 | error = EINVAL22; |
| 656 | break; |
| 657 | } |
| 658 | |
| 659 | return (error); |
| 660 | } |
| 661 | |
| 662 | /* |
| 663 | * Global vfs data structures |
| 664 | */ |
| 665 | const struct vops ntfs_vops = { |
| 666 | .vop_getattr = ntfs_getattr, |
| 667 | .vop_inactive = ntfs_inactive, |
| 668 | .vop_reclaim = ntfs_reclaim, |
| 669 | .vop_print = ntfs_print, |
| 670 | .vop_pathconf = ntfs_pathconf, |
| 671 | .vop_lock = nullop, |
| 672 | .vop_unlock = nullop, |
| 673 | .vop_islocked = nullop, |
| 674 | .vop_lookup = ntfs_lookup, |
| 675 | .vop_access = ntfs_access, |
| 676 | .vop_close = ntfs_close, |
| 677 | .vop_open = ntfs_open, |
| 678 | .vop_readdir = ntfs_readdir, |
| 679 | .vop_fsync = ntfs_fsync, |
| 680 | .vop_bmap = ntfs_bmap, |
| 681 | .vop_strategy = ntfs_strategy, |
| 682 | .vop_bwrite = vop_generic_bwrite, |
| 683 | .vop_read = ntfs_read, |
| 684 | }; |