1 /* $NetBSD: hfs_vnops.c,v 1.34 2017/05/26 14:21:00 riastradh 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 1.34 2017/05/26 14:21:00 riastradh 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/pool.h> 119 #include <sys/file.h> 120 #include <sys/stat.h> 121 #include <sys/mount.h> 122 #include <sys/namei.h> 123 #include <sys/buf.h> 124 #include <sys/dirent.h> 125 #include <sys/msgbuf.h> 126 127 #include <miscfs/fifofs/fifo.h> 128 #include <miscfs/specfs/specdev.h> 129 130 #include <fs/hfs/hfs.h> 131 #include <fs/hfs/unicode.h> 132 133 #include <miscfs/genfs/genfs.h> 134 135 int hfs_vop_lookup(void *); 136 int hfs_vop_open(void *); 137 int hfs_vop_close(void *); 138 int hfs_vop_access(void *); 139 int hfs_vop_getattr(void *); 140 int hfs_vop_setattr(void *); 141 int hfs_vop_bmap(void *); 142 int hfs_vop_read(void *); 143 int hfs_vop_readdir(void *); 144 int hfs_vop_readlink(void *); 145 int hfs_vop_reclaim(void *); 146 int hfs_vop_print(void *); 147 148 #ifdef HFS_DEBUG 149 #define DPRINTF(a) printf a 150 #else 151 #define DPRINTF(a) 152 #endif 153 154 155 int (**hfs_vnodeop_p) (void *); 156 const struct vnodeopv_entry_desc hfs_vnodeop_entries[] = { 157 { &vop_default_desc, vn_default_error }, 158 { &vop_lookup_desc, hfs_vop_lookup }, /* lookup */ 159 { &vop_create_desc, genfs_eopnotsupp }, /* create */ 160 { &vop_whiteout_desc, genfs_eopnotsupp }, /* whiteout */ 161 { &vop_mknod_desc, genfs_eopnotsupp }, /* mknod */ 162 { &vop_open_desc, hfs_vop_open }, /* open */ 163 { &vop_close_desc, hfs_vop_close }, /* close */ 164 { &vop_access_desc, hfs_vop_access }, /* access */ 165 { &vop_getattr_desc, hfs_vop_getattr }, /* getattr */ 166 { &vop_setattr_desc, hfs_vop_setattr }, /* setattr */ 167 { &vop_read_desc, hfs_vop_read }, /* read */ 168 { &vop_write_desc, genfs_eopnotsupp }, /* write */ 169 { &vop_fallocate_desc, genfs_eopnotsupp }, /* fallocate */ 170 { &vop_fdiscard_desc, genfs_eopnotsupp }, /* fdiscard */ 171 { &vop_ioctl_desc, genfs_eopnotsupp }, /* ioctl */ 172 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 173 { &vop_poll_desc, genfs_eopnotsupp }, /* poll */ 174 { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */ 175 { &vop_revoke_desc, genfs_eopnotsupp }, /* revoke */ 176 { &vop_mmap_desc, genfs_mmap }, /* mmap */ 177 { &vop_fsync_desc, genfs_nullop }, /* fsync */ 178 { &vop_seek_desc, genfs_seek }, /* seek */ 179 { &vop_remove_desc, genfs_eopnotsupp }, /* remove */ 180 { &vop_link_desc, genfs_eopnotsupp }, /* link */ 181 { &vop_rename_desc, genfs_eopnotsupp }, /* rename */ 182 { &vop_mkdir_desc, genfs_eopnotsupp }, /* mkdir */ 183 { &vop_rmdir_desc, genfs_eopnotsupp }, /* rmdir */ 184 { &vop_symlink_desc, genfs_eopnotsupp }, /* symlink */ 185 { &vop_readdir_desc, hfs_vop_readdir }, /* readdir */ 186 { &vop_readlink_desc, hfs_vop_readlink }, /* readlink */ 187 { &vop_abortop_desc, genfs_abortop }, /* abortop */ 188 { &vop_inactive_desc, genfs_eopnotsupp }, /* inactive */ 189 { &vop_reclaim_desc, hfs_vop_reclaim }, /* reclaim */ 190 { &vop_lock_desc, genfs_lock }, /* lock */ 191 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 192 { &vop_bmap_desc, hfs_vop_bmap }, /* bmap */ 193 { &vop_strategy_desc, genfs_eopnotsupp }, /* strategy */ 194 { &vop_print_desc, hfs_vop_print }, /* print */ 195 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 196 { &vop_pathconf_desc, genfs_eopnotsupp }, /* pathconf */ 197 { &vop_advlock_desc, genfs_eopnotsupp }, /* advlock */ 198 { &vop_bwrite_desc, genfs_eopnotsupp }, /* bwrite */ 199 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 200 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 201 { &vop_openextattr_desc, genfs_eopnotsupp }, /* openextattr */ 202 { &vop_closeextattr_desc, genfs_eopnotsupp }, /* closeextattr */ 203 { &vop_getextattr_desc, genfs_eopnotsupp }, /* getextattr */ 204 { &vop_setextattr_desc, genfs_eopnotsupp }, /* setextattr */ 205 { &vop_listextattr_desc, genfs_eopnotsupp }, /* listextattr */ 206 { &vop_deleteextattr_desc, genfs_eopnotsupp }, /* deleteextattr */ 207 { NULL, NULL } 208 }; 209 const struct vnodeopv_desc hfs_vnodeop_opv_desc = 210 { &hfs_vnodeop_p, hfs_vnodeop_entries }; 211 212 int (**hfs_specop_p) (void *); 213 const struct vnodeopv_entry_desc hfs_specop_entries[] = { 214 { &vop_default_desc, vn_default_error }, 215 { &vop_lookup_desc, spec_lookup }, /* lookup */ 216 { &vop_create_desc, spec_create }, /* create */ 217 { &vop_mknod_desc, spec_mknod }, /* mknod */ 218 { &vop_open_desc, spec_open }, /* open */ 219 { &vop_close_desc, spec_close }, /* close */ 220 { &vop_access_desc, hfs_vop_access }, /* access */ 221 { &vop_getattr_desc, hfs_vop_getattr }, /* getattr */ 222 { &vop_setattr_desc, hfs_vop_setattr }, /* setattr */ 223 { &vop_read_desc, spec_read }, /* read */ 224 { &vop_write_desc, spec_write }, /* write */ 225 { &vop_fallocate_desc, spec_fallocate }, /* fallocate */ 226 { &vop_fdiscard_desc, spec_fdiscard }, /* fdiscard */ 227 { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ 228 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 229 { &vop_poll_desc, spec_poll }, /* poll */ 230 { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */ 231 { &vop_revoke_desc, spec_revoke }, /* revoke */ 232 { &vop_mmap_desc, spec_mmap }, /* mmap */ 233 { &vop_fsync_desc, spec_fsync }, /* fsync */ 234 { &vop_seek_desc, spec_seek }, /* seek */ 235 { &vop_remove_desc, spec_remove }, /* remove */ 236 { &vop_link_desc, spec_link }, /* link */ 237 { &vop_rename_desc, spec_rename }, /* rename */ 238 { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ 239 { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ 240 { &vop_symlink_desc, spec_symlink }, /* symlink */ 241 { &vop_readdir_desc, spec_readdir }, /* readdir */ 242 { &vop_readlink_desc, spec_readlink }, /* readlink */ 243 { &vop_abortop_desc, spec_abortop }, /* abortop */ 244 { &vop_inactive_desc, genfs_eopnotsupp }, /* inactive */ 245 { &vop_reclaim_desc, hfs_vop_reclaim }, /* reclaim */ 246 { &vop_lock_desc, genfs_lock }, /* lock */ 247 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 248 { &vop_bmap_desc, spec_bmap }, /* bmap */ 249 { &vop_strategy_desc, spec_strategy }, /* strategy */ 250 { &vop_print_desc, hfs_vop_print }, /* print */ 251 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 252 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 253 { &vop_advlock_desc, spec_advlock }, /* advlock */ 254 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 255 { &vop_getpages_desc, spec_getpages }, /* getpages */ 256 { &vop_putpages_desc, spec_putpages }, /* putpages */ 257 #if 0 258 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 259 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 260 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 261 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 262 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 263 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 264 #endif 265 { NULL, NULL } 266 }; 267 const struct vnodeopv_desc hfs_specop_opv_desc = 268 { &hfs_specop_p, hfs_specop_entries }; 269 270 int (**hfs_fifoop_p) (void *); 271 const struct vnodeopv_entry_desc hfs_fifoop_entries[] = { 272 { &vop_default_desc, vn_default_error }, 273 { &vop_lookup_desc, vn_fifo_bypass }, /* lookup */ 274 { &vop_create_desc, vn_fifo_bypass }, /* create */ 275 { &vop_mknod_desc, vn_fifo_bypass }, /* mknod */ 276 { &vop_open_desc, vn_fifo_bypass }, /* open */ 277 { &vop_close_desc, vn_fifo_bypass }, /* close */ 278 { &vop_access_desc, hfs_vop_access }, /* access */ 279 { &vop_getattr_desc, hfs_vop_getattr }, /* getattr */ 280 { &vop_setattr_desc, hfs_vop_setattr }, /* setattr */ 281 { &vop_read_desc, vn_fifo_bypass }, /* read */ 282 { &vop_write_desc, vn_fifo_bypass }, /* write */ 283 { &vop_fallocate_desc, vn_fifo_bypass }, /* fallocate */ 284 { &vop_fdiscard_desc, vn_fifo_bypass }, /* fdiscard */ 285 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ 286 { &vop_fcntl_desc, genfs_fcntl }, /* fcntl */ 287 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ 288 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ 289 { &vop_revoke_desc, vn_fifo_bypass }, /* revoke */ 290 { &vop_mmap_desc, vn_fifo_bypass }, /* mmap */ 291 { &vop_fsync_desc, vn_fifo_bypass }, /* fsync */ 292 { &vop_seek_desc, vn_fifo_bypass }, /* seek */ 293 { &vop_remove_desc, vn_fifo_bypass }, /* remove */ 294 { &vop_link_desc, vn_fifo_bypass }, /* link */ 295 { &vop_rename_desc, vn_fifo_bypass }, /* rename */ 296 { &vop_mkdir_desc, vn_fifo_bypass }, /* mkdir */ 297 { &vop_rmdir_desc, vn_fifo_bypass }, /* rmdir */ 298 { &vop_symlink_desc, vn_fifo_bypass }, /* symlink */ 299 { &vop_readdir_desc, vn_fifo_bypass }, /* readdir */ 300 { &vop_readlink_desc, vn_fifo_bypass }, /* readlink */ 301 { &vop_abortop_desc, vn_fifo_bypass }, /* abortop */ 302 { &vop_inactive_desc, genfs_eopnotsupp }, /* inactive */ 303 { &vop_reclaim_desc, hfs_vop_reclaim }, /* reclaim */ 304 { &vop_lock_desc, genfs_lock }, /* lock */ 305 { &vop_unlock_desc, genfs_unlock }, /* unlock */ 306 { &vop_bmap_desc, vn_fifo_bypass }, /* bmap */ 307 { &vop_strategy_desc, vn_fifo_bypass }, /* strategy */ 308 { &vop_print_desc, hfs_vop_print }, /* print */ 309 { &vop_islocked_desc, genfs_islocked }, /* islocked */ 310 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ 311 { &vop_advlock_desc, vn_fifo_bypass }, /* advlock */ 312 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 313 { &vop_putpages_desc, vn_fifo_bypass }, /* putpages */ 314 #if 0 315 { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */ 316 { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */ 317 { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */ 318 { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */ 319 { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */ 320 { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */ 321 #endif 322 { NULL, NULL } 323 }; 324 const struct vnodeopv_desc hfs_fifoop_opv_desc = 325 { &hfs_fifoop_p, hfs_fifoop_entries }; 326 327 int 328 hfs_vop_lookup(void *v) 329 { 330 struct vop_lookup_v2_args /* { 331 struct vnode * a_dvp; 332 struct vnode ** a_vpp; 333 struct componentname * a_cnp; 334 } */ *ap = v; 335 struct componentname *cnp; 336 struct hfsnode *dp; /* hfsnode for directory being searched */ 337 kauth_cred_t cred; 338 struct vnode **vpp; /* resultant vnode */ 339 struct vnode *tdp; /* returned by VFS_VGET */ 340 struct vnode *vdp; /* vnode for directory being searched */ 341 hfs_catalog_key_t key; /* hfs+ catalog search key for requested child */ 342 hfs_catalog_keyed_record_t rec; /* catalog record of requested child */ 343 unichar_t* unicn; /* name of component, in Unicode */ 344 const char *pname; 345 int error; 346 int flags; 347 int result; /* result of libhfs operations */ 348 349 DPRINTF(("VOP = hfs_vop_lookup()\n")); 350 351 cnp = ap->a_cnp; 352 cred = cnp->cn_cred; 353 vdp = ap->a_dvp; 354 dp = VTOH(vdp); 355 error = 0; 356 pname = cnp->cn_nameptr; 357 result = 0; 358 unicn = NULL; 359 vpp = ap->a_vpp; 360 *vpp = NULL; 361 362 flags = cnp->cn_flags; 363 364 365 /* 366 * Check accessiblity of directory. 367 */ 368 if ((error = VOP_ACCESS(vdp, VEXEC, cred)) != 0) 369 return error; 370 371 if ((flags & ISLASTCN) && (vdp->v_mount->mnt_flag & MNT_RDONLY) && 372 (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 373 return EROFS; 374 375 /* 376 * We now have a segment name to search for, and a directory to search. 377 * 378 * Before tediously performing a linear scan of the directory, 379 * check the name cache to see if the directory/name pair 380 * we are looking for is known already. 381 */ 382 /* XXX Cache disabled until we can make sure it works. */ 383 #if 0 384 if ((error = cache_lookup(vdp, vpp, cnp)) >= 0) 385 return error; 386 #endif 387 388 389 #if 0 390 if (cnp->cn_namelen == 1 && *pname == '.') { 391 *vpp = vdp; 392 vref(vdp); 393 return 0; 394 } 395 #endif 396 397 if (flags & ISDOTDOT) { 398 DPRINTF(("DOTDOT ")); 399 error = hfs_vget_internal(vdp->v_mount, dp->h_parent, 400 HFS_RSRCFORK, &tdp); 401 if (error != 0) 402 goto error; 403 *vpp = tdp; 404 #if 0 405 } else if (dp->h_rec.u.cnid == rec.file.u.cnid) { 406 #endif 407 } else if (cnp->cn_namelen == 1 && pname[0] == '.') { 408 DPRINTF(("DOT ")); 409 vref(vdp); /* we want ourself, ie "." */ 410 *vpp = vdp; 411 } else { 412 hfs_callback_args cbargs; 413 uint8_t len, ni; 414 415 hfslib_init_cbargs(&cbargs); 416 417 /* XXX: when decomposing, string could grow 418 and we have to handle overflow */ 419 unicn = malloc(cnp->cn_namelen * sizeof(unicn[0]), 420 M_TEMP, M_WAITOK); 421 len = utf8_to_utf16(unicn, cnp->cn_namelen, 422 cnp->cn_nameptr, cnp->cn_namelen, 0, NULL); 423 for (ni = 0; ni < len; ni++) 424 if (unicn[ni] == (unichar_t)':') 425 unicn[ni] = (unichar_t)'/'; 426 /* XXX: check conversion errors? */ 427 if (hfslib_make_catalog_key(VTOH(vdp)->h_rec.u.cnid, len, unicn, 428 &key) == 0) { 429 DPRINTF(("ERROR in hfslib_make_catalog_key\n")); 430 error = EINVAL; 431 goto error; 432 } 433 434 result = hfslib_find_catalog_record_with_key(&dp->h_hmp->hm_vol, 435 &key, &rec, &cbargs); 436 if (result > 0) { 437 error = EINVAL; 438 goto error; 439 } 440 if (result < 0) { 441 if (cnp->cn_nameiop == CREATE) 442 error = EROFS; 443 else 444 error = ENOENT; 445 goto error; 446 } 447 448 if (rec.file.user_info.file_type == HFS_HARD_LINK_FILE_TYPE 449 && rec.file.user_info.file_creator == HFS_HFSLUS_CREATOR) { 450 if (hfslib_get_hardlink(&dp->h_hmp->hm_vol, 451 rec.file.bsd.special.inode_num, 452 &rec, &cbargs) != 0) { 453 error = EINVAL; 454 goto error; 455 } 456 } 457 458 if (rec.type == HFS_REC_FILE 459 && strcmp(cnp->cn_nameptr+cnp->cn_namelen, "/rsrc") == 0 460 && rec.file.rsrc_fork.logical_size > 0) { 461 /* advance namei next pointer to end of stirng */ 462 cnp->cn_consume = 5; 463 cnp->cn_flags &= ~REQUIREDIR; /* XXX: needed? */ 464 error = hfs_vget_internal(vdp->v_mount, rec.file.cnid, 465 HFS_RSRCFORK, &tdp); 466 } else 467 error = hfs_vget_internal(vdp->v_mount, rec.file.cnid, 468 HFS_DATAFORK, &tdp); 469 if (error != 0) 470 goto error; 471 *vpp = tdp; 472 } 473 DPRINTF(("\n")); 474 /* 475 * Insert name into cache if appropriate. 476 */ 477 /* XXX Cache disabled until we can make sure it works. */ 478 #if 0 479 cache_enter(vdp, *vpp, cnp); 480 #endif 481 482 error = 0; 483 484 /* FALLTHROUGH */ 485 error: 486 if (unicn != NULL) 487 free(unicn, M_TEMP); 488 489 return error; 490 } 491 492 int 493 hfs_vop_open(void *v) 494 { 495 #if 0 496 struct vop_open_args /* { 497 struct vnode *a_vp; 498 int a_mode; 499 kauth_cred_t a_cred; 500 } */ *ap = v; 501 struct hfsnode *hn = VTOH(ap->a_vp); 502 #endif 503 DPRINTF(("VOP = hfs_vop_open()\n")); 504 505 /* 506 * XXX This is a good place to read and cache the file's extents to 507 * XXX avoid doing it upon every read/write. Must however keep the 508 * XXX cache in sync when the file grows/shrinks. (So would that go 509 * XXX in vop_truncate?) 510 */ 511 512 return 0; 513 } 514 515 int 516 hfs_vop_close(void *v) 517 { 518 #if 0 519 struct vop_close_args /* { 520 struct vnode *a_vp; 521 int a_fflag; 522 kauth_cred_t a_cred; 523 } */ *ap = v; 524 struct hfsnode *hn = VTOH(ap->a_vp); 525 #endif 526 DPRINTF(("VOP = hfs_vop_close()\n")); 527 528 /* Release extents cache here. */ 529 530 return 0; 531 } 532 533 static int 534 hfs_check_possible(struct vnode *vp, mode_t mode) 535 { 536 537 /* 538 * Disallow writes on files, directories, and symlinks 539 * since we have no write support yet. 540 */ 541 542 if (mode & VWRITE) { 543 switch (vp->v_type) { 544 case VDIR: 545 case VLNK: 546 case VREG: 547 return EROFS; 548 default: 549 break; 550 } 551 } 552 553 return 0; 554 } 555 556 static int 557 hfs_check_permitted(vnode_t *vp, struct vattr *va, mode_t mode, 558 kauth_cred_t cred) 559 { 560 561 return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, 562 va->va_type, va->va_mode), vp, NULL, genfs_can_access(va->va_type, 563 va->va_mode, va->va_uid, va->va_gid, mode, cred)); 564 } 565 566 int 567 hfs_vop_access(void *v) 568 { 569 struct vop_access_args /* { 570 struct vnode *a_vp; 571 int a_mode; 572 kauth_cred_t a_cred; 573 } */ *ap = v; 574 struct vattr va; 575 int error; 576 577 DPRINTF(("VOP = hfs_vop_access()\n")); 578 579 error = hfs_check_possible(ap->a_vp, ap->a_mode); 580 if (error) 581 return error; 582 583 if ((error = VOP_GETATTR(ap->a_vp, &va, ap->a_cred)) != 0) 584 return error; 585 586 error = hfs_check_permitted(ap->a_vp, &va, ap->a_mode, ap->a_cred); 587 588 return error; 589 } 590 591 int 592 hfs_vop_getattr(void *v) 593 { 594 struct vop_getattr_args /* { 595 struct vnode *a_vp; 596 struct vattr *a_vap; 597 struct ucred *a_cred; 598 } */ *ap = v; 599 struct vnode *vp; 600 struct hfsnode *hp; 601 struct vattr *vap; 602 hfs_bsd_data_t *bsd; 603 hfs_fork_t *fork; 604 605 DPRINTF(("VOP = hfs_vop_getattr()\n")); 606 607 vp = ap->a_vp; 608 hp = VTOH(vp); 609 vap = ap->a_vap; 610 611 vattr_null(vap); 612 613 /* 614 * XXX Cannot trust permissions/modes/flags stored in an HFS+ catalog 615 * XXX record those values are not set on files created under Mac OS 9. 616 */ 617 vap->va_type = ap->a_vp->v_type; 618 if (hp->h_rec.u.rec_type == HFS_REC_FILE) { 619 hfs_file_record_t *f = &hp->h_rec.file; 620 if (hp->h_fork == HFS_RSRCFORK) 621 fork = &f->rsrc_fork; 622 else 623 fork = &f->data_fork; 624 vap->va_fileid = f->cnid; 625 bsd = &f->bsd; 626 vap->va_bytes = fork->total_blocks * HFS_BLOCKSIZE(vp); 627 vap->va_size = fork->logical_size; 628 hfs_time_to_timespec(f->date_created, &vap->va_ctime); 629 hfs_time_to_timespec(f->date_content_mod, &vap->va_mtime); 630 hfs_time_to_timespec(f->date_accessed, &vap->va_atime); 631 vap->va_nlink = 1; 632 } else if (hp->h_rec.u.rec_type == HFS_REC_FLDR) { 633 hfs_folder_record_t *f = &hp->h_rec.folder; 634 vap->va_fileid = hp->h_rec.folder.cnid; 635 bsd = &f->bsd; 636 vap->va_size = 512; /* XXX Temporary */ 637 vap->va_bytes = 512; /* XXX Temporary */ 638 hfs_time_to_timespec(f->date_created, &vap->va_ctime); 639 hfs_time_to_timespec(f->date_content_mod,&vap->va_mtime); 640 hfs_time_to_timespec(f->date_accessed, &vap->va_atime); 641 vap->va_nlink = 2; /* XXX */ 642 } else { 643 DPRINTF(("hfs+: hfs_vop_getattr(): invalid record type %i", 644 hp->h_rec.u.rec_type)); 645 return EINVAL; 646 } 647 648 if ((bsd->file_mode & S_IFMT) == 0) { 649 /* no bsd permissions recorded, use default values */ 650 if (hp->h_rec.u.rec_type == HFS_REC_FILE) 651 vap->va_mode = (S_IFREG | HFS_DEFAULT_FILE_MODE); 652 else 653 vap->va_mode = (S_IFDIR | HFS_DEFAULT_DIR_MODE); 654 vap->va_uid = HFS_DEFAULT_UID; 655 vap->va_gid = HFS_DEFAULT_GID; 656 } else { 657 vap->va_mode = bsd->file_mode; 658 vap->va_uid = bsd->owner_id; 659 vap->va_gid = bsd->group_id; 660 if ((vap->va_mode & S_IFMT) == S_IFCHR 661 || (vap->va_mode & S_IFMT) == S_IFBLK) { 662 vap->va_rdev 663 = HFS_CONVERT_RDEV(bsd->special.raw_device); 664 } 665 else if (bsd->special.link_count != 0) { 666 /* XXX: only if in metadata directory */ 667 vap->va_nlink = bsd->special.link_count; 668 } 669 } 670 671 vap->va_fsid = hp->h_dev; 672 vap->va_blocksize = hp->h_hmp->hm_vol.vh.block_size; 673 vap->va_gen = 1; 674 vap->va_flags = 0; 675 676 return 0; 677 } 678 679 int 680 hfs_vop_setattr(void *v) 681 { 682 struct vop_setattr_args /* { 683 struct vnode *a_vp; 684 struct vattr *a_vap; 685 kauth_cred_t a_cred; 686 } */ *ap = v; 687 struct vattr *vap; 688 struct vnode *vp; 689 690 vap = ap->a_vap; 691 vp = ap->a_vp; 692 693 /* 694 * Check for unsettable attributes. 695 */ 696 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || 697 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || 698 (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || 699 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { 700 return EINVAL; 701 } 702 703 /* XXX: needs revisiting for write support */ 704 if (vap->va_flags != VNOVAL 705 || vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL 706 || vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL 707 || vap->va_birthtime.tv_sec != VNOVAL) { 708 return EROFS; 709 } 710 711 if (vap->va_size != VNOVAL) { 712 /* 713 * Disallow write attempts on read-only file systems; 714 * unless the file is a socket, fifo, or a block or 715 * character device resident on the file system. 716 */ 717 switch (vp->v_type) { 718 case VDIR: 719 return EISDIR; 720 case VCHR: 721 case VBLK: 722 case VFIFO: 723 break; 724 case VREG: 725 return EROFS; 726 default: 727 return EOPNOTSUPP; 728 } 729 } 730 731 return 0; 732 } 733 734 int 735 hfs_vop_bmap(void *v) 736 { 737 struct vop_bmap_args /* { 738 struct vnode *a_vp; 739 daddr_t a_bn; 740 struct vnode **a_vpp; 741 daddr_t *a_bnp; 742 int *a_runp; 743 } */ *ap = v; 744 struct vnode *vp; 745 struct hfsnode *hp; 746 daddr_t lblkno; 747 hfs_callback_args cbargs; 748 hfs_libcb_argsread argsread; 749 hfs_extent_descriptor_t *extents; 750 uint16_t numextents, i; 751 int bshift; 752 753 vp = ap->a_vp; 754 hp = VTOH(vp); 755 lblkno = ap->a_bn; 756 bshift = vp->v_mount->mnt_fs_bshift; 757 758 /* 759 * Check for underlying vnode requests and ensure that logical 760 * to physical mapping is requested. 761 */ 762 if (ap->a_vpp != NULL) 763 *ap->a_vpp = hp->h_devvp; 764 if (ap->a_bnp == NULL) 765 return 0; 766 767 hfslib_init_cbargs(&cbargs); 768 argsread.cred = NULL; 769 argsread.l = NULL; 770 cbargs.read = &argsread; 771 772 numextents = hfslib_get_file_extents(&hp->h_hmp->hm_vol, 773 hp->h_rec.u.cnid, hp->h_fork, &extents, &cbargs); 774 775 /* XXX: is this correct for 0-length files? */ 776 if (numextents == 0) 777 return EBADF; 778 779 for (i = 0; i < numextents; i++) { 780 if (lblkno < extents[i].block_count) 781 break; 782 lblkno -= extents[i].block_count; 783 } 784 785 if (i == numextents) { 786 /* XXX: block number past EOF */ 787 i--; 788 lblkno += extents[i].block_count; 789 } 790 791 *ap->a_bnp = ((extents[i].start_block + lblkno) << (bshift-DEV_BSHIFT)) 792 + (hp->h_hmp->hm_vol.offset >> DEV_BSHIFT); 793 794 if (ap->a_runp) { 795 int nblk; 796 797 nblk = extents[i].block_count - lblkno - 1; 798 if (nblk <= 0) 799 *ap->a_runp = 0; 800 else if (nblk > MAXBSIZE >> bshift) 801 *ap->a_runp = (MAXBSIZE >> bshift) - 1; 802 else 803 *ap->a_runp = nblk; 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 /* FALLTHROUGH */ 992 993 error: 994 if (numchildren > 0) { 995 if (children != NULL) 996 free(children, M_TEMP); 997 if (childnames != NULL) 998 free(childnames, M_TEMP); 999 } 1000 1001 if (error) { 1002 DPRINTF(("ERROR = %i\n", error)); 1003 } 1004 1005 return error; 1006 } 1007 1008 int 1009 hfs_vop_readlink(void *v) { 1010 struct vop_readlink_args /* { 1011 struct vnode *a_vp; 1012 struct uio *a_uio; 1013 kauth_cred_t a_cred; 1014 } */ *ap = v; 1015 1016 return VOP_READ(ap->a_vp, ap->a_uio, 0, ap->a_cred); 1017 } 1018 1019 int 1020 hfs_vop_reclaim(void *v) 1021 { 1022 struct vop_reclaim_v2_args /* { 1023 struct vnode *a_vp; 1024 } */ *ap = v; 1025 struct vnode *vp; 1026 struct hfsnode *hp; 1027 1028 VOP_UNLOCK(ap->a_vp); 1029 1030 DPRINTF(("VOP = hfs_vop_reclaim()\n")); 1031 1032 vp = ap->a_vp; 1033 hp = VTOH(vp); 1034 1035 /* Decrement the reference count to the volume's device. */ 1036 if (hp->h_devvp) { 1037 vrele(hp->h_devvp); 1038 hp->h_devvp = 0; 1039 } 1040 1041 genfs_node_destroy(vp); 1042 pool_put(&hfs_node_pool, hp); 1043 vp->v_data = NULL; 1044 1045 return 0; 1046 } 1047 1048 int 1049 hfs_vop_print(void *v) 1050 { 1051 struct vop_print_args /* { 1052 struct vnode *a_vp; 1053 } */ *ap = v; 1054 struct vnode *vp; 1055 struct hfsnode *hp; 1056 1057 DPRINTF(("VOP = hfs_vop_print()\n")); 1058 1059 vp = ap->a_vp; 1060 hp = VTOH(vp); 1061 1062 printf("dummy = %X\n", (unsigned)hp->dummy); 1063 printf("\n"); 1064 1065 return 0; 1066 } 1067