hfs_vnops.c revision 1.24.8.1
1 /* $NetBSD: hfs_vnops.c,v 1.24.8.1 2012/08/12 12:59:49 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2005, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Yevgeny Binder and Dieter Baron. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1992, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software donated to Berkeley by 37 * Jan-Simon Pendry. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 /* 65 * Copyright (c) 1982, 1986, 1989, 1993, 1995 66 * The Regents of the University of California. All rights reserved. 67 * (c) UNIX System Laboratories, Inc. 68 * All or some portions of this file are derived from material licensed 69 * to the University of California by American Telephone and Telegraph 70 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 71 * the permission of UNIX System Laboratories, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. Neither the name of the University nor the names of its contributors 82 * may be used to endorse or promote products derived from this software 83 * without specific prior written permission. 84 * 85 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 86 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 87 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 88 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 89 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 90 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 91 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 92 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 93 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 94 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 95 * SUCH DAMAGE. 96 */ 97 98 99 /* 100 * Apple HFS+ filesystem 101 */ 102 103 #include <sys/cdefs.h> 104 __KERNEL_RCSID(0, "$NetBSD: hfs_vnops.c,v 1.24.8.1 2012/08/12 12:59:49 martin Exp $"); 105 106 #ifdef _KERNEL_OPT 107 #include "opt_ipsec.h" 108 #endif 109 110 #include <sys/param.h> 111 #include <sys/systm.h> 112 #include <sys/kernel.h> 113 #include <sys/vmmeter.h> 114 #include <sys/time.h> 115 #include <sys/proc.h> 116 #include <sys/vnode.h> 117 #include <sys/malloc.h> 118 #include <sys/file.h> 119 #include <sys/stat.h> 120 #include <sys/mount.h> 121 #include <sys/namei.h> 122 #include <sys/buf.h> 123 #include <sys/dirent.h> 124 #include <sys/msgbuf.h> 125 126 #include <miscfs/fifofs/fifo.h> 127 #include <miscfs/specfs/specdev.h> 128 129 #include <fs/hfs/hfs.h> 130 #include <fs/hfs/unicode.h> 131 132 #include <miscfs/genfs/genfs.h> 133 134 int hfs_vop_lookup(void *); 135 int hfs_vop_open(void *); 136 int hfs_vop_close(void *); 137 int hfs_vop_access(void *); 138 int hfs_vop_getattr(void *); 139 int hfs_vop_setattr(void *); 140 int hfs_vop_bmap(void *); 141 int hfs_vop_read(void *); 142 int hfs_vop_readdir(void *); 143 int hfs_vop_readlink(void *); 144 int hfs_vop_reclaim(void *); 145 int hfs_vop_print(void *); 146 147 #ifdef HFS_DEBUG 148 #define DPRINTF(a) printf a 149 #else 150 #define DPRINTF(a) 151 #endif 152 153 154 int (**hfs_vnodeop_p) (void *); 155 const struct vnodeopv_entry_desc hfs_vnodeop_entries[] = { 156 { &vop_default_desc, vn_default_error }, 157 { &vop_lookup_desc, hfs_vop_lookup }, /* lookup */ 158 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 159 { &vop_whiteout_desc, genfs_eopnotsupp }, /* whiteout */ 160 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 161 { &vop_open_desc, hfs_vop_open }, /* open */ 162 { &vop_close_desc, hfs_vop_close }, /* close */ 163 { &vop_access_desc, hfs_vop_access }, /* access */ 164 { &vop_getattr_desc, hfs_vop_getattr }, /* getattr */ 165 { &vop_setattr_desc, hfs_vop_setattr }, /* setattr */ 166 { &vop_read_desc, hfs_vop_read }, /* read */ 167 { &vop_write_desc, genfs_eopnotsupp }, /* write */ 168 { &vop_ioctl_desc, genfs_eopnotsupp }, /* ioctl */ 169 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 170 { &vop_poll_desc, genfs_eopnotsupp }, /* poll */ 171 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 172 { &vop_revoke_desc, genfs_eopnotsupp }, /* revoke */ 173 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 174 { &vop_fsync_desc, genfs_nullop }, /* fsync */ 175 { &vop_seek_desc, genfs_seek }, /* seek */ 176 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 177 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 178 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 179 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 180 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 181 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 182 { &vop_readdir_desc, hfs_vop_readdir }, /* readdir */ 183 { &vop_readlink_desc, hfs_vop_readlink }, /* readlink */ 184 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 185 { &vop_inactive_desc, genfs_eopnotsupp }, /* inactive */ 186 { &vop_reclaim_desc, hfs_vop_reclaim }, /* reclaim */ 187 { &vop_lock_desc, genfs_lock }, /* lock */ 188 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 189 { &vop_bmap_desc, hfs_vop_bmap }, /* bmap */ 190 { &vop_strategy_desc, genfs_eopnotsupp }, /* strategy */ 191 { &vop_print_desc, hfs_vop_print }, /* print */ 192 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 193 { &vop_pathconf_desc, genfs_eopnotsupp }, /* pathconf */ 194 { &vop_advlock_desc, genfs_eopnotsupp }, /* advlock */ 195 { &vop_bwrite_desc, genfs_eopnotsupp }, /* bwrite */ 196 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 197 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 198 { &vop_openextattr_desc, genfs_eopnotsupp }, /* openextattr */ 199 { &vop_closeextattr_desc, genfs_eopnotsupp }, /* closeextattr */ 200 { &vop_getextattr_desc, genfs_eopnotsupp }, /* getextattr */ 201 { &vop_setextattr_desc, genfs_eopnotsupp }, /* setextattr */ 202 { &vop_listextattr_desc, genfs_eopnotsupp }, /* listextattr */ 203 { &vop_deleteextattr_desc, genfs_eopnotsupp }, /* deleteextattr */ 204 { NULL, NULL } 205 }; 206 const struct vnodeopv_desc hfs_vnodeop_opv_desc = 207 { &hfs_vnodeop_p, hfs_vnodeop_entries }; 208 209 int (**hfs_specop_p) (void *); 210 const struct vnodeopv_entry_desc hfs_specop_entries[] = { 211 { &vop_default_desc, vn_default_error }, 212 { &vop_lookup_desc, spec_lookup }, /* lookup */ 213 { &vop_create_desc, spec_create }, /* create */ 214 { &vop_mknod_desc, spec_mknod }, /* mknod */ 215 { &vop_open_desc, spec_open }, /* open */ 216 { &vop_close_desc, spec_close }, /* close */ 217 { &vop_access_desc, hfs_vop_access }, /* access */ 218 { &vop_getattr_desc, hfs_vop_getattr }, /* getattr */ 219 { &vop_setattr_desc, hfs_vop_setattr }, /* setattr */ 220 { &vop_read_desc, spec_read }, /* read */ 221 { &vop_write_desc, spec_write }, /* write */ 222 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 223 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 224 { &vop_poll_desc, spec_poll }, /* poll */ 225 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 226 { &vop_revoke_desc, spec_revoke }, /* revoke */ 227 { &vop_mmap_desc, spec_mmap }, /* mmap */ 228 { &vop_fsync_desc, spec_fsync }, /* fsync */ 229 { &vop_seek_desc, spec_seek }, /* seek */ 230 { &vop_remove_desc, spec_remove }, /* remove */ 231 { &vop_link_desc, spec_link }, /* link */ 232 { &vop_rename_desc, spec_rename }, /* rename */ 233 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 234 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 235 { &vop_symlink_desc, spec_symlink }, /* symlink */ 236 { &vop_readdir_desc, spec_readdir }, /* readdir */ 237 { &vop_readlink_desc, spec_readlink }, /* readlink */ 238 { &vop_abortop_desc, spec_abortop }, /* abortop */ 239 { &vop_inactive_desc, genfs_eopnotsupp }, /* inactive */ 240 { &vop_reclaim_desc, hfs_vop_reclaim }, /* reclaim */ 241 { &vop_lock_desc, genfs_lock }, /* lock */ 242 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 243 { &vop_bmap_desc, spec_bmap }, /* bmap */ 244 { &vop_strategy_desc, spec_strategy }, /* strategy */ 245 { &vop_print_desc, hfs_vop_print }, /* print */ 246 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 247 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 248 { &vop_advlock_desc, spec_advlock }, /* advlock */ 249 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 250 { &vop_getpages_desc, spec_getpages }, /* getpages */ 251 { &vop_putpages_desc, spec_putpages }, /* putpages */ 252 #if 0 253 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 254 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 255 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 256 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 257 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 258 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 259 #endif 260 { NULL, NULL } 261 }; 262 const struct vnodeopv_desc hfs_specop_opv_desc = 263 { &hfs_specop_p, hfs_specop_entries }; 264 265 int (**hfs_fifoop_p) (void *); 266 const struct vnodeopv_entry_desc hfs_fifoop_entries[] = { 267 { &vop_default_desc, vn_default_error }, 268 { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ 269 { &vop_create_desc, vn_fifo_bypass }, /* create */ 270 { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ 271 { &vop_open_desc, vn_fifo_bypass }, /* open */ 272 { &vop_close_desc, vn_fifo_bypass }, /* close */ 273 { &vop_access_desc, hfs_vop_access }, /* access */ 274 { &vop_getattr_desc, hfs_vop_getattr }, /* getattr */ 275 { &vop_setattr_desc, hfs_vop_setattr }, /* setattr */ 276 { &vop_read_desc, vn_fifo_bypass }, /* read */ 277 { &vop_write_desc, vn_fifo_bypass }, /* write */ 278 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ 279 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 280 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ 281 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ 282 { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ 283 { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ 284 { &vop_fsync_desc, vn_fifo_bypass }, /* fsync */ 285 { &vop_seek_desc, vn_fifo_bypass }, /* seek */ 286 { &vop_remove_desc, vn_fifo_bypass }, /* remove */ 287 { &vop_link_desc, vn_fifo_bypass }, /* link */ 288 { &vop_rename_desc, vn_fifo_bypass }, /* rename */ 289 { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ 290 { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ 291 { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ 292 { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ 293 { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ 294 { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ 295 { &vop_inactive_desc, genfs_eopnotsupp }, /* inactive */ 296 { &vop_reclaim_desc, hfs_vop_reclaim }, /* reclaim */ 297 { &vop_lock_desc, genfs_lock }, /* lock */ 298 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 299 { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ 300 { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ 301 { &vop_print_desc, hfs_vop_print }, /* print */ 302 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 303 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ 304 { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ 305 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 306 { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ 307 #if 0 308 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 309 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 310 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 311 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 312 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 313 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 314 #endif 315 { NULL, NULL } 316 }; 317 const struct vnodeopv_desc hfs_fifoop_opv_desc = 318 { &hfs_fifoop_p, hfs_fifoop_entries }; 319 320 int 321 hfs_vop_lookup(void *v) 322 { 323 struct vop_lookup_args /* { 324 struct vnode * a_dvp; 325 struct vnode ** a_vpp; 326 struct componentname * a_cnp; 327 } */ *ap = v; 328 struct buf *bp; /* a buffer of directory entries */ 329 struct componentname *cnp; 330 struct hfsnode *dp; /* hfsnode for directory being searched */ 331 kauth_cred_t cred; 332 struct vnode **vpp; /* resultant vnode */ 333 struct vnode *pdp; /* saved dp during symlink work */ 334 struct vnode *tdp; /* returned by VFS_VGET */ 335 struct vnode *vdp; /* vnode for directory being searched */ 336 hfs_catalog_key_t key; /* hfs+ catalog search key for requested child */ 337 hfs_catalog_keyed_record_t rec; /* catalog record of requested child */ 338 unichar_t* unicn; /* name of component, in Unicode */ 339 const char *pname; 340 int error; 341 int flags; 342 int result; /* result of libhfs operations */ 343 344 DPRINTF(("VOP = hfs_vop_lookup()\n")); 345 346 bp = NULL; 347 cnp = ap->a_cnp; 348 cred = cnp->cn_cred; 349 vdp = ap->a_dvp; 350 dp = VTOH(vdp); 351 error = 0; 352 pname = cnp->cn_nameptr; 353 result = 0; 354 unicn = NULL; 355 vpp = ap->a_vpp; 356 *vpp = NULL; 357 358 flags = cnp->cn_flags; 359 360 361 /* 362 * Check accessiblity of directory. 363 */ 364 if ((error = VOP_ACCESS(vdp, VEXEC, cred)) != 0) 365 return error; 366 367 if ((flags & ISLASTCN) && (vdp->v_mount->mnt_flag & MNT_RDONLY) && 368 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 369 return EROFS; 370 371 /* 372 * We now have a segment name to search for, and a directory to search. 373 * 374 * Before tediously performing a linear scan of the directory, 375 * check the name cache to see if the directory/name pair 376 * we are looking for is known already. 377 */ 378 /* XXX Cache disabled until we can make sure it works. */ 379 #if 0 380 if ((error = cache_lookup(vdp, vpp, cnp)) >= 0) 381 return error; 382 #endif 383 384 385 #if 0 386 if (cnp->cn_namelen == 1 && *pname == '.') { 387 *vpp = vdp; 388 vref(vdp); 389 return 0; 390 } 391 #endif 392 393 pdp = vdp; 394 if (flags & ISDOTDOT) { 395 DPRINTF(("DOTDOT ")); 396 VOP_UNLOCK(pdp); /* race to get the inode */ 397 error = VFS_VGET(vdp->v_mount, dp->h_parent, &tdp); 398 vn_lock(pdp, LK_EXCLUSIVE | LK_RETRY); 399 if (error != 0) 400 goto error; 401 *vpp = tdp; 402 #if 0 403 } else if (dp->h_rec.u.cnid == rec.file.u.cnid) { 404 #endif 405 } else if (cnp->cn_namelen == 1 && pname[0] == '.') { 406 DPRINTF(("DOT ")); 407 vref(vdp); /* we want ourself, ie "." */ 408 *vpp = vdp; 409 } else { 410 hfs_callback_args cbargs; 411 uint8_t len, ni; 412 413 hfslib_init_cbargs(&cbargs); 414 415 /* XXX: when decomposing, string could grow 416 and we have to handle overflow */ 417 unicn = malloc(cnp->cn_namelen * sizeof(unicn[0]), 418 M_TEMP, M_WAITOK); 419 len = utf8_to_utf16(unicn, cnp->cn_namelen, 420 cnp->cn_nameptr, cnp->cn_namelen, 0, NULL); 421 for (ni = 0; ni < len; ni++) 422 if (unicn[ni] == (unichar_t)':') 423 unicn[ni] = (unichar_t)'/'; 424 /* XXX: check conversion errors? */ 425 if (hfslib_make_catalog_key(VTOH(vdp)->h_rec.u.cnid, len, unicn, 426 &key) == 0) { 427 DPRINTF(("ERROR in hfslib_make_catalog_key\n")); 428 error = EINVAL; 429 goto error; 430 } 431 432 result = hfslib_find_catalog_record_with_key(&dp->h_hmp->hm_vol, 433 &key, &rec, &cbargs); 434 if (result > 0) { 435 error = EINVAL; 436 goto error; 437 } 438 if (result < 0) { 439 if (cnp->cn_nameiop == CREATE) 440 error = EROFS; 441 else 442 error = ENOENT; 443 goto error; 444 } 445 446 if (rec.file.user_info.file_type == HFS_HARD_LINK_FILE_TYPE 447 && rec.file.user_info.file_creator == HFS_HFSLUS_CREATOR) { 448 if (hfslib_get_hardlink(&dp->h_hmp->hm_vol, 449 rec.file.bsd.special.inode_num, 450 &rec, &cbargs) != 0) { 451 error = EINVAL; 452 goto error; 453 } 454 } 455 456 if (rec.type == HFS_REC_FILE 457 && strcmp(cnp->cn_nameptr+cnp->cn_namelen, "/rsrc") == 0 458 && rec.file.rsrc_fork.logical_size > 0) { 459 /* advance namei next pointer to end of stirng */ 460 cnp->cn_consume = 5; 461 cnp->cn_flags &= ~REQUIREDIR; /* XXX: needed? */ 462 error = hfs_vget_internal(vdp->v_mount, rec.file.cnid, 463 HFS_RSRCFORK, &tdp); 464 } 465 else 466 error = VFS_VGET(vdp->v_mount, rec.file.cnid, &tdp); 467 if (error != 0) 468 goto error; 469 *vpp = tdp; 470 } 471 DPRINTF(("\n")); 472 /* 473 * Insert name into cache if appropriate. 474 */ 475 /* XXX Cache disabled until we can make sure it works. */ 476 #if 0 477 cache_enter(vdp, *vpp, cnp); 478 #endif 479 480 error = 0; 481 482 /* FALLTHROUGH */ 483 error: 484 if (unicn != NULL) 485 free(unicn, M_TEMP); 486 487 return error; 488 } 489 490 int 491 hfs_vop_open(void *v) 492 { 493 #if 0 494 struct vop_open_args /* { 495 struct vnode *a_vp; 496 int a_mode; 497 kauth_cred_t a_cred; 498 } */ *ap = v; 499 struct hfsnode *hn = VTOH(ap->a_vp); 500 #endif 501 DPRINTF(("VOP = hfs_vop_open()\n")); 502 503 /* 504 * XXX This is a good place to read and cache the file's extents to 505 * XXX avoid doing it upon every read/write. Must however keep the 506 * XXX cache in sync when the file grows/shrinks. (So would that go 507 * XXX in vop_truncate?) 508 */ 509 510 return 0; 511 } 512 513 int 514 hfs_vop_close(void *v) 515 { 516 #if 0 517 struct vop_close_args /* { 518 struct vnode *a_vp; 519 int a_fflag; 520 kauth_cred_t a_cred; 521 } */ *ap = v; 522 struct hfsnode *hn = VTOH(ap->a_vp); 523 #endif 524 DPRINTF(("VOP = hfs_vop_close()\n")); 525 526 /* Release extents cache here. */ 527 528 return 0; 529 } 530 531 static int 532 hfs_check_possible(struct vnode *vp, mode_t mode) 533 { 534 535 /* 536 * Disallow writes on files, directories, and symlinks 537 * since we have no write support yet. 538 */ 539 540 if (mode & VWRITE) { 541 switch (vp->v_type) { 542 case VDIR: 543 case VLNK: 544 case VREG: 545 return EROFS; 546 default: 547 break; 548 } 549 } 550 551 return 0; 552 } 553 554 static int 555 hfs_check_permitted(struct vattr *va, mode_t mode, kauth_cred_t cred) 556 { 557 558 return genfs_can_access(va->va_type, va->va_mode, va->va_uid, 559 va->va_gid, mode, cred); 560 } 561 562 int 563 hfs_vop_access(void *v) 564 { 565 struct vop_access_args /* { 566 struct vnode *a_vp; 567 int a_mode; 568 kauth_cred_t a_cred; 569 } */ *ap = v; 570 struct vattr va; 571 int error; 572 573 DPRINTF(("VOP = hfs_vop_access()\n")); 574 575 error = hfs_check_possible(ap->a_vp, ap->a_mode); 576 if (error) 577 return error; 578 579 if ((error = VOP_GETATTR(ap->a_vp, &va, ap->a_cred)) != 0) 580 return error; 581 582 error = hfs_check_permitted(&va, ap->a_mode, ap->a_cred); 583 584 return error; 585 } 586 587 int 588 hfs_vop_getattr(void *v) 589 { 590 struct vop_getattr_args /* { 591 struct vnode *a_vp; 592 struct vattr *a_vap; 593 struct ucred *a_cred; 594 } */ *ap = v; 595 struct vnode *vp; 596 struct hfsnode *hp; 597 struct vattr *vap; 598 hfs_bsd_data_t *bsd; 599 hfs_fork_t *fork; 600 601 DPRINTF(("VOP = hfs_vop_getattr()\n")); 602 603 vp = ap->a_vp; 604 hp = VTOH(vp); 605 vap = ap->a_vap; 606 607 vattr_null(vap); 608 609 /* 610 * XXX Cannot trust permissions/modes/flags stored in an HFS+ catalog 611 * XXX record those values are not set on files created under Mac OS 9. 612 */ 613 vap->va_type = ap->a_vp->v_type; 614 if (hp->h_rec.u.rec_type == HFS_REC_FILE) { 615 hfs_file_record_t *f = &hp->h_rec.file; 616 if (hp->h_fork == HFS_RSRCFORK) 617 fork = &f->rsrc_fork; 618 else 619 fork = &f->data_fork; 620 vap->va_fileid = f->cnid; 621 bsd = &f->bsd; 622 vap->va_bytes = fork->total_blocks * HFS_BLOCKSIZE(vp); 623 vap->va_size = fork->logical_size; 624 hfs_time_to_timespec(f->date_created, &vap->va_ctime); 625 hfs_time_to_timespec(f->date_content_mod, &vap->va_mtime); 626 hfs_time_to_timespec(f->date_accessed, &vap->va_atime); 627 vap->va_nlink = 1; 628 } 629 else if (hp->h_rec.u.rec_type == HFS_REC_FLDR) { 630 hfs_folder_record_t *f = &hp->h_rec.folder; 631 vap->va_fileid = hp->h_rec.folder.cnid; 632 bsd = &f->bsd; 633 vap->va_size = 512; /* XXX Temporary */ 634 vap->va_bytes = 512; /* XXX Temporary */ 635 hfs_time_to_timespec(f->date_created, &vap->va_ctime); 636 hfs_time_to_timespec(f->date_content_mod,&vap->va_mtime); 637 hfs_time_to_timespec(f->date_accessed, &vap->va_atime); 638 vap->va_nlink = 2; /* XXX */ 639 } 640 else { 641 DPRINTF(("hfs+: hfs_vop_getattr(): invalid record type %i", 642 hp->h_rec.u.rec_type)); 643 return EINVAL; 644 } 645 646 if ((bsd->file_mode & S_IFMT) == 0) { 647 /* no bsd permissions recorded, use default values */ 648 if (hp->h_rec.u.rec_type == HFS_REC_FILE) 649 vap->va_mode = (S_IFREG | HFS_DEFAULT_FILE_MODE); 650 else 651 vap->va_mode = (S_IFDIR | HFS_DEFAULT_DIR_MODE); 652 vap->va_uid = HFS_DEFAULT_UID; 653 vap->va_gid = HFS_DEFAULT_GID; 654 } 655 else { 656 vap->va_mode = bsd->file_mode; 657 vap->va_uid = bsd->owner_id; 658 vap->va_gid = bsd->group_id; 659 if ((vap->va_mode & S_IFMT) == S_IFCHR 660 || (vap->va_mode & S_IFMT) == S_IFBLK) { 661 vap->va_rdev 662 = HFS_CONVERT_RDEV(bsd->special.raw_device); 663 } 664 else if (bsd->special.link_count != 0) { 665 /* XXX: only if in metadata directory */ 666 vap->va_nlink = bsd->special.link_count; 667 } 668 } 669 670 vap->va_fsid = hp->h_dev; 671 vap->va_blocksize = hp->h_hmp->hm_vol.vh.block_size; 672 vap->va_gen = 1; 673 vap->va_flags = 0; 674 675 return 0; 676 } 677 678 int 679 hfs_vop_setattr(void *v) 680 { 681 struct vop_setattr_args /* { 682 struct vnode *a_vp; 683 struct vattr *a_vap; 684 kauth_cred_t a_cred; 685 } */ *ap = v; 686 struct vattr *vap; 687 struct vnode *vp; 688 689 vap = ap->a_vap; 690 vp = ap->a_vp; 691 692 /* 693 * Check for unsettable attributes. 694 */ 695 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || 696 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 697 (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 698 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { 699 return EINVAL; 700 } 701 702 /* XXX: needs revisiting for write support */ 703 if (vap->va_flags != VNOVAL 704 || vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL 705 || vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL 706 || vap->va_birthtime.tv_sec != VNOVAL) { 707 return EROFS; 708 } 709 710 if (vap->va_size != VNOVAL) { 711 /* 712 * Disallow write attempts on read-only file systems; 713 * unless the file is a socket, fifo, or a block or 714 * character device resident on the file system. 715 */ 716 switch (vp->v_type) { 717 case VDIR: 718 return EISDIR; 719 case VCHR: 720 case VBLK: 721 case VFIFO: 722 break; 723 case VREG: 724 return EROFS; 725 default: 726 return EOPNOTSUPP; 727 } 728 } 729 730 return 0; 731 } 732 733 int 734 hfs_vop_bmap(void *v) 735 { 736 struct vop_bmap_args /* { 737 struct vnode *a_vp; 738 daddr_t a_bn; 739 struct vnode **a_vpp; 740 daddr_t *a_bnp; 741 int *a_runp; 742 } */ *ap = v; 743 struct vnode *vp; 744 struct hfsnode *hp; 745 daddr_t lblkno; 746 hfs_callback_args cbargs; 747 hfs_libcb_argsread argsread; 748 hfs_extent_descriptor_t *extents; 749 uint16_t numextents, i; 750 int bshift; 751 752 vp = ap->a_vp; 753 hp = VTOH(vp); 754 lblkno = ap->a_bn; 755 bshift = vp->v_mount->mnt_fs_bshift; 756 757 /* 758 * Check for underlying vnode requests and ensure that logical 759 * to physical mapping is requested. 760 */ 761 if (ap->a_vpp != NULL) 762 *ap->a_vpp = hp->h_devvp; 763 if (ap->a_bnp == NULL) 764 return 0; 765 766 hfslib_init_cbargs(&cbargs); 767 argsread.cred = NULL; 768 argsread.l = NULL; 769 cbargs.read = &argsread; 770 771 numextents = hfslib_get_file_extents(&hp->h_hmp->hm_vol, 772 hp->h_rec.u.cnid, hp->h_fork, &extents, &cbargs); 773 774 /* XXX: is this correct for 0-length files? */ 775 if (numextents == 0) 776 return EBADF; 777 778 for (i = 0; i < numextents; i++) { 779 if (lblkno < extents[i].block_count) 780 break; 781 lblkno -= extents[i].block_count; 782 } 783 784 if (i == numextents) { 785 /* XXX: block number past EOF */ 786 i--; 787 lblkno += extents[i].block_count; 788 } 789 790 *ap->a_bnp = ((extents[i].start_block + lblkno) << (bshift-DEV_BSHIFT)) 791 + (hp->h_hmp->hm_vol.offset >> DEV_BSHIFT); 792 793 if (ap->a_runp) { 794 int nblk; 795 796 nblk = extents[i].block_count - lblkno - 1; 797 if (nblk <= 0) 798 *ap->a_runp = 0; 799 else if (nblk > MAXBSIZE >> bshift) 800 *ap->a_runp = (MAXBSIZE >> bshift) - 1; 801 else 802 *ap->a_runp = nblk; 803 804 } 805 806 free(extents, M_TEMP); 807 808 return 0; 809 } 810 811 int 812 hfs_vop_read(void *v) 813 { 814 struct vop_read_args /* { 815 struct vnode *a_vp; 816 struct uio *a_uio; 817 int a_ioflag; 818 kauth_cred_t a_cred; 819 } */ *ap = v; 820 struct vnode *vp; 821 struct hfsnode *hp; 822 struct uio *uio; 823 uint64_t fsize; /* logical size of file */ 824 int advice; 825 int error; 826 827 vp = ap->a_vp; 828 hp = VTOH(vp); 829 uio = ap->a_uio; 830 if (hp->h_fork == HFS_RSRCFORK) 831 fsize = hp->h_rec.file.rsrc_fork.logical_size; 832 else 833 fsize = hp->h_rec.file.data_fork.logical_size; 834 error = 0; 835 advice = IO_ADV_DECODE(ap->a_ioflag); 836 837 if (uio->uio_offset < 0) 838 return EINVAL; 839 840 if (uio->uio_resid == 0 || uio->uio_offset >= fsize) 841 return 0; 842 843 if (vp->v_type != VREG && vp->v_type != VLNK) 844 return EINVAL; 845 846 error = 0; 847 while (uio->uio_resid > 0 && error == 0) { 848 vsize_t len; 849 850 len = MIN(uio->uio_resid, fsize - uio->uio_offset); 851 if (len == 0) 852 break; 853 854 error = ubc_uiomove(&vp->v_uobj, uio, len, advice, 855 UBC_READ | UBC_PARTIALOK | UBC_UNMAP_FLAG(vp)); 856 } 857 858 return error; 859 } 860 861 int 862 hfs_vop_readdir(void *v) 863 { 864 struct vop_readdir_args /* { 865 struct vnode *a_vp; 866 struct uio *a_uio; 867 kauth_cred_t a_cred; 868 int *a_eofflag; 869 off_t **a_cookies; 870 int a_*ncookies; 871 } */ *ap = v; 872 873 DPRINTF(("VOP = hfs_vop_readdir()\n")); 874 875 struct dirent curent; /* the dirent entry we are constructing */ 876 struct hfsnode *hp; 877 hfs_catalog_keyed_record_t *children; 878 hfs_unistr255_t *childnames; 879 hfs_callback_args cbargs; 880 hfs_libcb_argsread argsread; 881 struct uio *uio; 882 off_t bufoff; /* offset in buffer relative to start of dirents */ 883 uint32_t numchildren; 884 uint32_t curchild; /* index of child we are stuffing into dirent */ 885 size_t namlen, ni; 886 int error; 887 int i; /* dummy variable */ 888 889 bufoff = 0; 890 children = NULL; 891 error = 0; 892 numchildren = 0; 893 hp = VTOH(ap->a_vp); 894 uio = ap->a_uio; 895 896 if (uio->uio_offset < 0) 897 return EINVAL; 898 if (ap->a_eofflag != NULL) 899 *ap->a_eofflag = 0; 900 901 /* XXX Inform that we don't support NFS, for now. */ 902 #if 0 903 if(ap->a_eofflag != NULL || ap->a_cookies != NULL || 904 ap->a_ncookies != NULL) 905 return EOPNOTSUPP; 906 #endif 907 DPRINTF(("READDIR uio: offset=%td, resid=%zu\n", 908 uio->uio_offset, uio->uio_resid)); 909 hfslib_init_cbargs(&cbargs); 910 argsread.cred = ap->a_cred; 911 argsread.l = NULL; 912 cbargs.read = &argsread; 913 914 /* XXX Should we cache this? */ 915 if (hfslib_get_directory_contents(&hp->h_hmp->hm_vol, hp->h_rec.u.cnid, 916 &children, &childnames, &numchildren, &cbargs) != 0) { 917 DPRINTF(("ENOENT\n")); 918 error = ENOENT; 919 goto error; 920 } 921 922 DPRINTF(("numchildren = %u\n", numchildren)); 923 for (curchild = 0; curchild < numchildren && uio->uio_resid > 0; 924 curchild++) { 925 namlen = utf16_to_utf8(curent.d_name, NAME_MAX, 926 childnames[curchild].unicode, childnames[curchild].length, 927 0, NULL); 928 /* XXX: check conversion errors? */ 929 if (namlen > NAME_MAX) { 930 /* XXX: how to handle name too long? */ 931 continue; 932 } 933 for (ni = 0; ni < namlen; ni++) 934 if (curent.d_name[ni] == '/') 935 curent.d_name[ni] = ':'; 936 curent.d_namlen = namlen; 937 curent.d_reclen = _DIRENT_SIZE(&curent); 938 939 /* Skip to desired dirent. */ 940 bufoff += curent.d_reclen; 941 if (bufoff - curent.d_reclen < uio->uio_offset) 942 continue; 943 944 /* Make sure we don't return partial entries. */ 945 if (uio->uio_resid < curent.d_reclen) { 946 DPRINTF(("PARTIAL ENTRY\n")); 947 if (ap->a_eofflag != NULL) 948 *ap->a_eofflag = 1; 949 break; 950 } 951 952 curent.d_fileno = children[curchild].file.cnid; 953 switch (hfs_catalog_keyed_record_vtype(children+curchild)) { 954 case VREG: 955 curent.d_type = DT_REG; 956 break; 957 case VDIR: 958 curent.d_type = DT_DIR; 959 break; 960 case VBLK: 961 curent.d_type = DT_BLK; 962 break; 963 case VCHR: 964 curent.d_type = DT_CHR; 965 break; 966 case VLNK: 967 curent.d_type = DT_LNK; 968 break; 969 case VSOCK: 970 curent.d_type = DT_SOCK; 971 break; 972 case VFIFO: 973 curent.d_type = DT_FIFO; 974 break; 975 default: 976 curent.d_type = DT_UNKNOWN; 977 break; 978 } 979 DPRINTF(("curchildname = %s\t\t", curchildname)); 980 /* pad curent.d_name to aligned byte boundary */ 981 for (i = curent.d_namlen; 982 i < curent.d_reclen - _DIRENT_NAMEOFF(&curent); i++) 983 curent.d_name[i] = 0; 984 985 DPRINTF(("curent.d_name = %s\n", curent.d_name)); 986 987 if ((error = uiomove(&curent, curent.d_reclen, uio)) != 0) 988 goto error; 989 } 990 991 992 /* FALLTHROUGH */ 993 994 error: 995 if (numchildren > 0) { 996 if (children != NULL) 997 free(children, M_TEMP); 998 if (childnames != NULL) 999 free(childnames, M_TEMP); 1000 } 1001 1002 if (error) { 1003 DPRINTF(("ERROR = %i\n", error)); 1004 } 1005 1006 return error; 1007 } 1008 1009 int 1010 hfs_vop_readlink(void *v) { 1011 struct vop_readlink_args /* { 1012 struct vnode *a_vp; 1013 struct uio *a_uio; 1014 kauth_cred_t a_cred; 1015 } */ *ap = v; 1016 1017 return VOP_READ(ap->a_vp, ap->a_uio, 0, ap->a_cred); 1018 } 1019 1020 int 1021 hfs_vop_reclaim(void *v) 1022 { 1023 struct vop_reclaim_args /* { 1024 struct vnode *a_vp; 1025 } */ *ap = v; 1026 struct vnode *vp; 1027 struct hfsnode *hp; 1028 struct hfsmount *hmp; 1029 1030 DPRINTF(("VOP = hfs_vop_reclaim()\n")); 1031 1032 vp = ap->a_vp; 1033 hp = VTOH(vp); 1034 hmp = hp->h_hmp; 1035 1036 /* Remove the hfsnode from its hash chain. */ 1037 hfs_nhashremove(hp); 1038 1039 /* Decrement the reference count to the volume's device. */ 1040 if (hp->h_devvp) { 1041 vrele(hp->h_devvp); 1042 hp->h_devvp = 0; 1043 } 1044 1045 genfs_node_destroy(vp); 1046 free(vp->v_data, M_TEMP); 1047 vp->v_data = NULL; 1048 1049 return 0; 1050 } 1051 1052 int 1053 hfs_vop_print(void *v) 1054 { 1055 struct vop_print_args /* { 1056 struct vnode *a_vp; 1057 } */ *ap = v; 1058 struct vnode *vp; 1059 struct hfsnode *hp; 1060 1061 DPRINTF(("VOP = hfs_vop_print()\n")); 1062 1063 vp = ap->a_vp; 1064 hp = VTOH(vp); 1065 1066 printf("dummy = %X\n", (unsigned)hp->dummy); 1067 printf("\n"); 1068 1069 return 0; 1070 } 1071
Indexes created Sat Oct 25 10:09:55 GMT 2025