puffs.c revision 1.30
1 /* $NetBSD: puffs.c,v 1.30 2007/02/15 17:04:46 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Google Summer of Code program and the Ulla Tuominen Foundation. 8 * The Google SoC project was mentored by Bill Studenmund. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #if !defined(lint) 37 __RCSID("$NetBSD: puffs.c,v 1.30 2007/02/15 17:04:46 pooka Exp $"); 38 #endif /* !lint */ 39 40 #include <sys/param.h> 41 #include <sys/mount.h> 42 43 #include <assert.h> 44 #include <err.h> 45 #include <errno.h> 46 #include <fcntl.h> 47 #include <mntopts.h> 48 #include <puffs.h> 49 #include <puffsdump.h> 50 #include <stdarg.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <syslog.h> 55 #include <unistd.h> 56 57 #include "puffs_priv.h" 58 59 /* Most file systems want this for opts, so just give it to them */ 60 const struct mntopt puffsmopts[] = { 61 MOPT_STDOPTS, 62 PUFFSMOPT_STD, 63 MOPT_NULL, 64 }; 65 66 #define FILLOP(lower, upper) \ 67 do { \ 68 if (pops->puffs_node_##lower) \ 69 opmask[PUFFS_VN_##upper] = 1; \ 70 } while (/*CONSTCOND*/0) 71 static void 72 fillvnopmask(struct puffs_ops *pops, uint8_t *opmask) 73 { 74 75 memset(opmask, 0, PUFFS_VN_MAX); 76 77 FILLOP(create, CREATE); 78 FILLOP(mknod, MKNOD); 79 FILLOP(open, OPEN); 80 FILLOP(close, CLOSE); 81 FILLOP(access, ACCESS); 82 FILLOP(getattr, GETATTR); 83 FILLOP(setattr, SETATTR); 84 FILLOP(poll, POLL); /* XXX: not ready in kernel */ 85 FILLOP(mmap, MMAP); 86 FILLOP(fsync, FSYNC); 87 FILLOP(seek, SEEK); 88 FILLOP(remove, REMOVE); 89 FILLOP(link, LINK); 90 FILLOP(rename, RENAME); 91 FILLOP(mkdir, MKDIR); 92 FILLOP(rmdir, RMDIR); 93 FILLOP(symlink, SYMLINK); 94 FILLOP(readdir, READDIR); 95 FILLOP(readlink, READLINK); 96 FILLOP(reclaim, RECLAIM); 97 FILLOP(inactive, INACTIVE); 98 FILLOP(print, PRINT); 99 FILLOP(read, READ); 100 FILLOP(write, WRITE); 101 102 /* XXX: not implemented in the kernel */ 103 FILLOP(getextattr, GETEXTATTR); 104 FILLOP(setextattr, SETEXTATTR); 105 FILLOP(listextattr, LISTEXTATTR); 106 } 107 #undef FILLOP 108 109 int 110 puffs_getselectable(struct puffs_usermount *pu) 111 { 112 113 return pu->pu_fd; 114 } 115 116 int 117 puffs_setblockingmode(struct puffs_usermount *pu, int mode) 118 { 119 int x; 120 121 x = mode; 122 return ioctl(pu->pu_fd, FIONBIO, &x); 123 } 124 125 int 126 puffs_getstate(struct puffs_usermount *pu) 127 { 128 129 return pu->pu_state; 130 } 131 132 void 133 puffs_setstacksize(struct puffs_usermount *pu, size_t ss) 134 { 135 136 pu->pu_cc_stacksize = ss; 137 } 138 139 struct puffs_pathobj * 140 puffs_getrootpathobj(struct puffs_usermount *pu) 141 { 142 struct puffs_node *pnr; 143 144 pnr = pu->pu_pn_root; 145 if (pnr == NULL) { 146 errno = ENOENT; 147 return NULL; 148 } 149 150 return &pnr->pn_po; 151 } 152 153 154 void 155 puffs_set_pathbuild(struct puffs_usermount *pu, pu_pathbuild_fn fn) 156 { 157 158 pu->pu_pathbuild = fn; 159 } 160 161 void 162 puffs_set_pathtransform(struct puffs_usermount *pu, pu_pathtransform_fn fn) 163 { 164 165 pu->pu_pathtransform = fn; 166 } 167 168 void 169 puffs_set_pathcmp(struct puffs_usermount *pu, pu_pathcmp_fn fn) 170 { 171 172 pu->pu_pathcmp = fn; 173 } 174 175 void 176 puffs_set_pathfree(struct puffs_usermount *pu, pu_pathfree_fn fn) 177 { 178 179 pu->pu_pathfree = fn; 180 } 181 182 void 183 puffs_set_namemod(struct puffs_usermount *pu, pu_namemod_fn fn) 184 { 185 186 pu->pu_namemod = fn; 187 } 188 189 enum {PUFFCALL_ANSWER, PUFFCALL_IGNORE, PUFFCALL_AGAIN}; 190 191 struct puffs_usermount * 192 _puffs_mount(int develv, struct puffs_ops *pops, const char *dir, int mntflags, 193 const char *puffsname, void *priv, uint32_t pflags, size_t maxreqlen) 194 { 195 struct puffs_args pargs; 196 struct puffs_usermount *pu; 197 int fd = 0; 198 199 if (develv != PUFFS_DEVEL_LIBVERSION) { 200 warnx("puffs_mount: mounting with lib version %d, need %d", 201 develv, PUFFS_DEVEL_LIBVERSION); 202 errno = EINVAL; 203 return NULL; 204 } 205 206 fd = open("/dev/puffs", O_RDONLY); 207 if (fd == -1) 208 return NULL; 209 if (fd <= 2) 210 warnx("puffs_mount: device fd %d (<= 2), sure this is " 211 "what you want?", fd); 212 213 pargs.pa_vers = PUFFSDEVELVERS | PUFFSVERSION; 214 pargs.pa_flags = PUFFS_FLAG_KERN(pflags); 215 pargs.pa_fd = fd; 216 pargs.pa_maxreqlen = maxreqlen; 217 fillvnopmask(pops, pargs.pa_vnopmask); 218 (void)strlcpy(pargs.pa_name, puffsname, sizeof(pargs.pa_name)); 219 220 pu = malloc(sizeof(struct puffs_usermount)); 221 if (!pu) 222 return NULL; 223 224 pu->pu_flags = pflags; 225 pu->pu_ops = *pops; 226 free(pops); /* XXX */ 227 pu->pu_fd = fd; 228 pu->pu_privdata = priv; 229 pu->pu_cc_stacksize = PUFFS_CC_STACKSIZE_DEFAULT; 230 LIST_INIT(&pu->pu_pnodelst); 231 232 /* defaults for some user-settable translation functions */ 233 pu->pu_cmap = NULL; /* identity translation */ 234 235 pu->pu_pathbuild = puffs_stdpath_buildpath; 236 pu->pu_pathfree = puffs_stdpath_freepath; 237 pu->pu_pathcmp = puffs_stdpath_cmppath; 238 pu->pu_pathtransform = NULL; 239 pu->pu_namemod = NULL; 240 241 pu->pu_state = PUFFS_STATE_MOUNTING; 242 if (mount(MOUNT_PUFFS, dir, mntflags, &pargs) == -1) 243 goto failfree; 244 pu->pu_maxreqlen = pargs.pa_maxreqlen; 245 246 return pu; 247 248 failfree: 249 /* can't unmount() from here for obvious reasons */ 250 if (fd) 251 close(fd); 252 free(pu); 253 return NULL; 254 } 255 256 int 257 puffs_start(struct puffs_usermount *pu, void *rootcookie, struct statvfs *sbp) 258 { 259 struct puffs_startreq sreq; 260 261 memset(&sreq, 0, sizeof(struct puffs_startreq)); 262 sreq.psr_cookie = rootcookie; 263 sreq.psr_sb = *sbp; 264 265 /* tell kernel we're flying */ 266 if (ioctl(pu->pu_fd, PUFFSSTARTOP, &sreq) == -1) 267 return -1; 268 269 pu->pu_state = PUFFS_STATE_RUNNING; 270 271 return 0; 272 } 273 274 /* 275 * XXX: there's currently no clean way to request unmount from 276 * within the user server, so be very brutal about it. 277 */ 278 /*ARGSUSED*/ 279 int 280 puffs_exit(struct puffs_usermount *pu, int force) 281 { 282 struct puffs_node *pn, *pn_next; 283 284 force = 1; /* currently */ 285 286 if (pu->pu_fd) 287 close(pu->pu_fd); 288 289 pn = LIST_FIRST(&pu->pu_pnodelst); 290 while (pn) { 291 pn_next = LIST_NEXT(pn, pn_entries); 292 puffs_pn_put(pn); 293 pn = pn_next; 294 } 295 free(pu); 296 297 return 0; /* always succesful for now, WILL CHANGE */ 298 } 299 300 int 301 puffs_mainloop(struct puffs_usermount *pu, int flags) 302 { 303 struct puffs_getreq *pgr; 304 struct puffs_putreq *ppr; 305 int rv; 306 307 rv = -1; 308 pgr = puffs_req_makeget(pu, pu->pu_maxreqlen, 0); 309 if (pgr == NULL) 310 return -1; 311 312 ppr = puffs_req_makeput(pu); 313 if (ppr == NULL) { 314 puffs_req_destroyget(pgr); 315 return -1; 316 } 317 318 if ((flags & PUFFSLOOP_NODAEMON) == 0) 319 if (daemon(1, 0) == -1) 320 goto out; 321 322 /* XXX: should be a bit more robust with errors here */ 323 while (puffs_getstate(pu) == PUFFS_STATE_RUNNING 324 || puffs_getstate(pu) == PUFFS_STATE_UNMOUNTING) { 325 puffs_req_resetput(ppr); 326 327 if (puffs_req_handle(pu, pgr, ppr, 0) == -1) { 328 rv = -1; 329 break; 330 } 331 if (puffs_req_putput(ppr) == -1) { 332 rv = -1; 333 break; 334 } 335 } 336 337 out: 338 puffs_req_destroyput(ppr); 339 puffs_req_destroyget(pgr); 340 return rv; 341 } 342 343 int 344 puffs_dopreq(struct puffs_usermount *pu, struct puffs_req *preq, 345 struct puffs_putreq *ppr) 346 { 347 struct puffs_cc *pcc; 348 int rv; 349 350 if (pu->pu_flags & PUFFS_FLAG_OPDUMP) 351 puffsdump_req(preq); 352 353 pcc = puffs_cc_create(pu); 354 355 /* XXX: temporary kludging */ 356 pcc->pcc_preq = malloc(preq->preq_buflen); 357 if (pcc->pcc_preq == NULL) 358 return -1; 359 (void) memcpy(pcc->pcc_preq, preq, preq->preq_buflen); 360 361 rv = puffs_docc(pcc, ppr); 362 363 if ((pcc->pcc_flags & PCC_DONE) == 0) 364 return 0; 365 366 return rv; 367 } 368 369 int 370 puffs_docc(struct puffs_cc *pcc, struct puffs_putreq *ppr) 371 { 372 int rv; 373 374 assert((pcc->pcc_flags & PCC_DONE) == 0); 375 376 puffs_cc_continue(pcc); 377 rv = pcc->pcc_rv; 378 379 if ((pcc->pcc_flags & PCC_DONE) == 0) 380 rv = PUFFCALL_AGAIN; 381 382 /* check if we need to store this reply */ 383 switch (rv) { 384 case PUFFCALL_ANSWER: 385 puffs_req_putcc(ppr, pcc); 386 break; 387 case PUFFCALL_IGNORE: 388 puffs_cc_destroy(pcc); 389 break; 390 case PUFFCALL_AGAIN: 391 break; 392 default: 393 assert(/*CONSTCOND*/0); 394 } 395 396 return 0; 397 } 398 399 /* library private, but linked from callcontext.c */ 400 401 void 402 puffs_calldispatcher(struct puffs_cc *pcc) 403 { 404 struct puffs_usermount *pu = pcc->pcc_pu; 405 struct puffs_ops *pops = &pu->pu_ops; 406 struct puffs_req *preq = pcc->pcc_preq; 407 void *auxbuf = preq; /* help with typecasting */ 408 int error, rv, buildpath; 409 410 assert(pcc->pcc_flags & (PCC_ONCE | PCC_REALCC)); 411 412 if (PUFFSOP_WANTREPLY(preq->preq_opclass)) 413 rv = PUFFCALL_ANSWER; 414 else 415 rv = PUFFCALL_IGNORE; 416 417 buildpath = pu->pu_flags & PUFFS_FLAG_BUILDPATH; 418 419 if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VFS) { 420 switch (preq->preq_optype) { 421 case PUFFS_VFS_UNMOUNT: 422 { 423 struct puffs_vfsreq_unmount *auxt = auxbuf; 424 425 pu->pu_state = PUFFS_STATE_UNMOUNTING; 426 error = pops->puffs_fs_unmount(pcc, 427 auxt->pvfsr_flags, auxt->pvfsr_pid); 428 if (!error) 429 pu->pu_state = PUFFS_STATE_UNMOUNTED; 430 else 431 pu->pu_state = PUFFS_STATE_RUNNING; 432 break; 433 } 434 case PUFFS_VFS_STATVFS: 435 { 436 struct puffs_vfsreq_statvfs *auxt = auxbuf; 437 438 error = pops->puffs_fs_statvfs(pcc, 439 &auxt->pvfsr_sb, auxt->pvfsr_pid); 440 break; 441 } 442 case PUFFS_VFS_SYNC: 443 { 444 struct puffs_vfsreq_sync *auxt = auxbuf; 445 446 error = pops->puffs_fs_sync(pcc, 447 auxt->pvfsr_waitfor, &auxt->pvfsr_cred, 448 auxt->pvfsr_pid); 449 break; 450 } 451 case PUFFS_VFS_SUSPEND: 452 { 453 struct puffs_vfsreq_suspend *auxt = auxbuf; 454 455 error = 0; 456 if (pops->puffs_fs_suspend == NULL) 457 break; 458 459 pops->puffs_fs_suspend(pcc, auxt->pvfsr_status); 460 break; 461 } 462 463 default: 464 /* 465 * I guess the kernel sees this one coming 466 */ 467 error = EINVAL; 468 break; 469 } 470 471 /* XXX: audit return values */ 472 /* XXX: sync with kernel */ 473 } else if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VN) { 474 switch (preq->preq_optype) { 475 case PUFFS_VN_LOOKUP: 476 { 477 struct puffs_vnreq_lookup *auxt = auxbuf; 478 struct puffs_cn pcn; 479 480 pcn.pcn_pkcnp = &auxt->pvnr_cn; 481 if (buildpath) { 482 error = puffs_path_pcnbuild(pu, &pcn, 483 preq->preq_cookie); 484 if (error) 485 break; 486 } 487 488 /* lookup *must* be present */ 489 error = pops->puffs_node_lookup(pcc, preq->preq_cookie, 490 &auxt->pvnr_newnode, &auxt->pvnr_vtype, 491 &auxt->pvnr_size, &auxt->pvnr_rdev, &pcn); 492 493 if (buildpath) { 494 if (error) { 495 pu->pu_pathfree(pu, &pcn.pcn_po_full); 496 } else { 497 struct puffs_node *pn; 498 499 /* 500 * did we get a new node or a 501 * recycled node? 502 */ 503 pn = PU_CMAP(pu, auxt->pvnr_newnode); 504 if (pn->pn_po.po_path == NULL) 505 pn->pn_po = pcn.pcn_po_full; 506 else 507 pu->pu_pathfree(pu, 508 &pcn.pcn_po_full); 509 } 510 } 511 512 break; 513 } 514 515 case PUFFS_VN_CREATE: 516 { 517 struct puffs_vnreq_create *auxt = auxbuf; 518 struct puffs_cn pcn; 519 if (pops->puffs_node_create == NULL) { 520 error = 0; 521 break; 522 } 523 524 pcn.pcn_pkcnp = &auxt->pvnr_cn; 525 if (buildpath) { 526 error = puffs_path_pcnbuild(pu, &pcn, 527 preq->preq_cookie); 528 if (error) 529 break; 530 } 531 532 error = pops->puffs_node_create(pcc, 533 preq->preq_cookie, &auxt->pvnr_newnode, 534 &pcn, &auxt->pvnr_va); 535 536 if (buildpath) { 537 if (error) { 538 pu->pu_pathfree(pu, &pcn.pcn_po_full); 539 } else { 540 struct puffs_node *pn; 541 542 pn = PU_CMAP(pu, auxt->pvnr_newnode); 543 pn->pn_po = pcn.pcn_po_full; 544 } 545 } 546 547 break; 548 } 549 550 case PUFFS_VN_MKNOD: 551 { 552 struct puffs_vnreq_mknod *auxt = auxbuf; 553 struct puffs_cn pcn; 554 if (pops->puffs_node_mknod == NULL) { 555 error = 0; 556 break; 557 } 558 559 pcn.pcn_pkcnp = &auxt->pvnr_cn; 560 if (buildpath) { 561 error = puffs_path_pcnbuild(pu, &pcn, 562 preq->preq_cookie); 563 if (error) 564 break; 565 } 566 567 error = pops->puffs_node_mknod(pcc, 568 preq->preq_cookie, &auxt->pvnr_newnode, 569 &pcn, &auxt->pvnr_va); 570 571 if (buildpath) { 572 if (error) { 573 pu->pu_pathfree(pu, &pcn.pcn_po_full); 574 } else { 575 struct puffs_node *pn; 576 577 pn = PU_CMAP(pu, auxt->pvnr_newnode); 578 pn->pn_po = pcn.pcn_po_full; 579 } 580 } 581 582 break; 583 } 584 585 case PUFFS_VN_OPEN: 586 { 587 struct puffs_vnreq_open *auxt = auxbuf; 588 if (pops->puffs_node_open == NULL) { 589 error = 0; 590 break; 591 } 592 593 error = pops->puffs_node_open(pcc, 594 preq->preq_cookie, auxt->pvnr_mode, 595 &auxt->pvnr_cred, auxt->pvnr_pid); 596 break; 597 } 598 599 case PUFFS_VN_CLOSE: 600 { 601 struct puffs_vnreq_close *auxt = auxbuf; 602 if (pops->puffs_node_close == NULL) { 603 error = 0; 604 break; 605 } 606 607 error = pops->puffs_node_close(pcc, 608 preq->preq_cookie, auxt->pvnr_fflag, 609 &auxt->pvnr_cred, auxt->pvnr_pid); 610 break; 611 } 612 613 case PUFFS_VN_ACCESS: 614 { 615 struct puffs_vnreq_access *auxt = auxbuf; 616 if (pops->puffs_node_access == NULL) { 617 error = 0; 618 break; 619 } 620 621 error = pops->puffs_node_access(pcc, 622 preq->preq_cookie, auxt->pvnr_mode, 623 &auxt->pvnr_cred, auxt->pvnr_pid); 624 break; 625 } 626 627 case PUFFS_VN_GETATTR: 628 { 629 struct puffs_vnreq_getattr *auxt = auxbuf; 630 if (pops->puffs_node_getattr == NULL) { 631 error = EOPNOTSUPP; 632 break; 633 } 634 635 error = pops->puffs_node_getattr(pcc, 636 preq->preq_cookie, &auxt->pvnr_va, 637 &auxt->pvnr_cred, auxt->pvnr_pid); 638 break; 639 } 640 641 case PUFFS_VN_SETATTR: 642 { 643 struct puffs_vnreq_setattr *auxt = auxbuf; 644 if (pops->puffs_node_setattr == NULL) { 645 error = EOPNOTSUPP; 646 break; 647 } 648 649 error = pops->puffs_node_setattr(pcc, 650 preq->preq_cookie, &auxt->pvnr_va, 651 &auxt->pvnr_cred, auxt->pvnr_pid); 652 break; 653 } 654 655 case PUFFS_VN_MMAP: 656 { 657 struct puffs_vnreq_mmap *auxt = auxbuf; 658 if (pops->puffs_node_mmap == NULL) { 659 error = 0; 660 break; 661 } 662 663 error = pops->puffs_node_mmap(pcc, 664 preq->preq_cookie, auxt->pvnr_fflags, 665 &auxt->pvnr_cred, auxt->pvnr_pid); 666 break; 667 } 668 669 case PUFFS_VN_FSYNC: 670 { 671 struct puffs_vnreq_fsync *auxt = auxbuf; 672 if (pops->puffs_node_fsync == NULL) { 673 error = 0; 674 break; 675 } 676 677 error = pops->puffs_node_fsync(pcc, 678 preq->preq_cookie, &auxt->pvnr_cred, 679 auxt->pvnr_flags, auxt->pvnr_offlo, 680 auxt->pvnr_offhi, auxt->pvnr_pid); 681 break; 682 } 683 684 case PUFFS_VN_SEEK: 685 { 686 struct puffs_vnreq_seek *auxt = auxbuf; 687 if (pops->puffs_node_seek == NULL) { 688 error = 0; 689 break; 690 } 691 692 error = pops->puffs_node_seek(pcc, 693 preq->preq_cookie, auxt->pvnr_oldoff, 694 auxt->pvnr_newoff, &auxt->pvnr_cred); 695 break; 696 } 697 698 case PUFFS_VN_REMOVE: 699 { 700 struct puffs_vnreq_remove *auxt = auxbuf; 701 struct puffs_cn pcn; 702 if (pops->puffs_node_remove == NULL) { 703 error = 0; 704 break; 705 } 706 707 pcn.pcn_pkcnp = &auxt->pvnr_cn; 708 709 error = pops->puffs_node_remove(pcc, 710 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 711 break; 712 } 713 714 case PUFFS_VN_LINK: 715 { 716 struct puffs_vnreq_link *auxt = auxbuf; 717 struct puffs_cn pcn; 718 if (pops->puffs_node_link == NULL) { 719 error = 0; 720 break; 721 } 722 723 pcn.pcn_pkcnp = &auxt->pvnr_cn; 724 if (buildpath) { 725 error = puffs_path_pcnbuild(pu, &pcn, 726 preq->preq_cookie); 727 if (error) 728 break; 729 } 730 731 error = pops->puffs_node_link(pcc, 732 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 733 if (buildpath) 734 pu->pu_pathfree(pu, &pcn.pcn_po_full); 735 736 break; 737 } 738 739 case PUFFS_VN_RENAME: 740 { 741 struct puffs_vnreq_rename *auxt = auxbuf; 742 struct puffs_cn pcn_src, pcn_targ; 743 struct puffs_node *pn_src; 744 745 if (pops->puffs_node_rename == NULL) { 746 error = 0; 747 break; 748 } 749 750 pcn_src.pcn_pkcnp = &auxt->pvnr_cn_src; 751 pcn_targ.pcn_pkcnp = &auxt->pvnr_cn_targ; 752 if (buildpath) { 753 pn_src = auxt->pvnr_cookie_src; 754 pcn_src.pcn_po_full = pn_src->pn_po; 755 756 error = puffs_path_pcnbuild(pu, &pcn_targ, 757 auxt->pvnr_cookie_targdir); 758 if (error) 759 break; 760 } 761 762 error = pops->puffs_node_rename(pcc, 763 preq->preq_cookie, auxt->pvnr_cookie_src, 764 &pcn_src, auxt->pvnr_cookie_targdir, 765 auxt->pvnr_cookie_targ, &pcn_targ); 766 767 if (buildpath) { 768 if (error) { 769 pu->pu_pathfree(pu, 770 &pcn_targ.pcn_po_full); 771 } else { 772 struct puffs_pathinfo pi; 773 struct puffs_pathobj po_old; 774 775 /* handle this node */ 776 po_old = pn_src->pn_po; 777 pn_src->pn_po = pcn_targ.pcn_po_full; 778 779 if (pn_src->pn_va.va_type != VDIR) { 780 pu->pu_pathfree(pu, &po_old); 781 break; 782 } 783 784 /* handle all child nodes for DIRs */ 785 pi.pi_old = &pcn_src.pcn_po_full; 786 pi.pi_new = &pcn_targ.pcn_po_full; 787 788 if (puffs_pn_nodewalk(pu, 789 puffs_path_prefixadj, &pi) != NULL) 790 error = ENOMEM; 791 pu->pu_pathfree(pu, &po_old); 792 } 793 } 794 break; 795 } 796 797 case PUFFS_VN_MKDIR: 798 { 799 struct puffs_vnreq_mkdir *auxt = auxbuf; 800 struct puffs_cn pcn; 801 if (pops->puffs_node_mkdir == NULL) { 802 error = 0; 803 break; 804 } 805 806 pcn.pcn_pkcnp = &auxt->pvnr_cn; 807 if (buildpath) { 808 error = puffs_path_pcnbuild(pu, &pcn, 809 preq->preq_cookie); 810 if (error) 811 break; 812 } 813 814 error = pops->puffs_node_mkdir(pcc, 815 preq->preq_cookie, &auxt->pvnr_newnode, 816 &pcn, &auxt->pvnr_va); 817 818 if (buildpath) { 819 if (error) { 820 pu->pu_pathfree(pu, &pcn.pcn_po_full); 821 } else { 822 struct puffs_node *pn; 823 824 pn = PU_CMAP(pu, auxt->pvnr_newnode); 825 pn->pn_po = pcn.pcn_po_full; 826 } 827 } 828 829 break; 830 } 831 832 case PUFFS_VN_RMDIR: 833 { 834 struct puffs_vnreq_rmdir *auxt = auxbuf; 835 struct puffs_cn pcn; 836 if (pops->puffs_node_rmdir == NULL) { 837 error = 0; 838 break; 839 } 840 841 pcn.pcn_pkcnp = &auxt->pvnr_cn; 842 843 error = pops->puffs_node_rmdir(pcc, 844 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 845 break; 846 } 847 848 case PUFFS_VN_SYMLINK: 849 { 850 struct puffs_vnreq_symlink *auxt = auxbuf; 851 struct puffs_cn pcn; 852 if (pops->puffs_node_symlink == NULL) { 853 error = 0; 854 break; 855 } 856 857 pcn.pcn_pkcnp = &auxt->pvnr_cn; 858 if (buildpath) { 859 error = puffs_path_pcnbuild(pu, &pcn, 860 preq->preq_cookie); 861 if (error) 862 break; 863 } 864 865 error = pops->puffs_node_symlink(pcc, 866 preq->preq_cookie, &auxt->pvnr_newnode, 867 &pcn, &auxt->pvnr_va, auxt->pvnr_link); 868 869 if (buildpath) { 870 if (error) { 871 pu->pu_pathfree(pu, &pcn.pcn_po_full); 872 } else { 873 struct puffs_node *pn; 874 875 pn = PU_CMAP(pu, auxt->pvnr_newnode); 876 pn->pn_po = pcn.pcn_po_full; 877 } 878 } 879 880 break; 881 } 882 883 case PUFFS_VN_READDIR: 884 { 885 struct puffs_vnreq_readdir *auxt = auxbuf; 886 size_t res; 887 888 if (pops->puffs_node_readdir == NULL) { 889 error = 0; 890 break; 891 } 892 893 res = auxt->pvnr_resid; 894 error = pops->puffs_node_readdir(pcc, 895 preq->preq_cookie, auxt->pvnr_dent, 896 &auxt->pvnr_cred, &auxt->pvnr_offset, 897 &auxt->pvnr_resid); 898 899 /* need to move a bit more */ 900 preq->preq_buflen = sizeof(struct puffs_vnreq_readdir) 901 + (res - auxt->pvnr_resid); 902 break; 903 } 904 905 case PUFFS_VN_READLINK: 906 { 907 struct puffs_vnreq_readlink *auxt = auxbuf; 908 if (pops->puffs_node_readlink == NULL) { 909 error = EOPNOTSUPP; 910 break; 911 } 912 913 error = pops->puffs_node_readlink(pcc, 914 preq->preq_cookie, &auxt->pvnr_cred, 915 auxt->pvnr_link, &auxt->pvnr_linklen); 916 break; 917 } 918 919 case PUFFS_VN_RECLAIM: 920 { 921 struct puffs_vnreq_reclaim *auxt = auxbuf; 922 if (pops->puffs_node_reclaim == NULL) { 923 error = 0; 924 break; 925 } 926 927 error = pops->puffs_node_reclaim(pcc, 928 preq->preq_cookie, auxt->pvnr_pid); 929 break; 930 } 931 932 case PUFFS_VN_INACTIVE: 933 { 934 struct puffs_vnreq_inactive *auxt = auxbuf; 935 if (pops->puffs_node_inactive == NULL) { 936 error = EOPNOTSUPP; 937 break; 938 } 939 940 error = pops->puffs_node_inactive(pcc, 941 preq->preq_cookie, auxt->pvnr_pid, 942 &auxt->pvnr_backendrefs); 943 break; 944 } 945 946 case PUFFS_VN_PATHCONF: 947 { 948 struct puffs_vnreq_pathconf *auxt = auxbuf; 949 if (pops->puffs_node_pathconf == NULL) { 950 error = 0; 951 break; 952 } 953 954 error = pops->puffs_node_pathconf(pcc, 955 preq->preq_cookie, auxt->pvnr_name, 956 &auxt->pvnr_retval); 957 break; 958 } 959 960 case PUFFS_VN_ADVLOCK: 961 { 962 struct puffs_vnreq_advlock *auxt = auxbuf; 963 if (pops->puffs_node_advlock == NULL) { 964 error = 0; 965 break; 966 } 967 968 error = pops->puffs_node_advlock(pcc, 969 preq->preq_cookie, auxt->pvnr_id, auxt->pvnr_op, 970 &auxt->pvnr_fl, auxt->pvnr_flags); 971 break; 972 } 973 974 case PUFFS_VN_PRINT: 975 { 976 if (pops->puffs_node_print == NULL) { 977 error = 0; 978 break; 979 } 980 981 error = pops->puffs_node_print(pcc, 982 preq->preq_cookie); 983 break; 984 } 985 986 case PUFFS_VN_READ: 987 { 988 struct puffs_vnreq_read *auxt = auxbuf; 989 size_t res; 990 991 if (pops->puffs_node_read == NULL) { 992 error = EIO; 993 break; 994 } 995 996 res = auxt->pvnr_resid; 997 error = pops->puffs_node_read(pcc, 998 preq->preq_cookie, auxt->pvnr_data, 999 auxt->pvnr_offset, &auxt->pvnr_resid, 1000 &auxt->pvnr_cred, auxt->pvnr_ioflag); 1001 1002 /* need to move a bit more */ 1003 preq->preq_buflen = sizeof(struct puffs_vnreq_read) 1004 + (res - auxt->pvnr_resid); 1005 break; 1006 } 1007 1008 case PUFFS_VN_WRITE: 1009 { 1010 struct puffs_vnreq_write *auxt = auxbuf; 1011 1012 if (pops->puffs_node_write == NULL) { 1013 error = EIO; 1014 break; 1015 } 1016 1017 error = pops->puffs_node_write(pcc, 1018 preq->preq_cookie, auxt->pvnr_data, 1019 auxt->pvnr_offset, &auxt->pvnr_resid, 1020 &auxt->pvnr_cred, auxt->pvnr_ioflag); 1021 1022 /* don't need to move data back to the kernel */ 1023 preq->preq_buflen = sizeof(struct puffs_vnreq_write); 1024 break; 1025 } 1026 1027 /* holy bitrot, ryydman! */ 1028 #if 0 1029 case PUFFS_VN_IOCTL: 1030 error = pops->puffs_node_ioctl1(pcc, preq->preq_cookie, 1031 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1032 if (error != 0) 1033 break; 1034 pop.pso_reqid = preq->preq_id; 1035 1036 /* let the kernel do it's intermediate duty */ 1037 error = ioctl(pu->pu_fd, PUFFSSIZEOP, &pop); 1038 /* 1039 * XXX: I don't actually know what the correct 1040 * thing to do in case of an error is, so I'll 1041 * just ignore it for the time being. 1042 */ 1043 error = pops->puffs_node_ioctl2(pcc, preq->preq_cookie, 1044 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1045 break; 1046 1047 case PUFFS_VN_FCNTL: 1048 error = pops->puffs_node_fcntl1(pcc, preq->preq_cookie, 1049 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1050 if (error != 0) 1051 break; 1052 pop.pso_reqid = preq->preq_id; 1053 1054 /* let the kernel do it's intermediate duty */ 1055 error = ioctl(pu->pu_fd, PUFFSSIZEOP, &pop); 1056 /* 1057 * XXX: I don't actually know what the correct 1058 * thing to do in case of an error is, so I'll 1059 * just ignore it for the time being. 1060 */ 1061 error = pops->puffs_node_fcntl2(pcc, preq->preq_cookie, 1062 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1063 break; 1064 #endif 1065 1066 default: 1067 printf("inval op %d\n", preq->preq_optype); 1068 error = EINVAL; 1069 break; 1070 } 1071 } else { 1072 /* 1073 * this one also 1074 */ 1075 error = EINVAL; 1076 } 1077 1078 preq->preq_rv = error; 1079 1080 pcc->pcc_rv = rv; 1081 pcc->pcc_flags |= PCC_DONE; 1082 } 1083 1084 1085 #if 0 1086 case PUFFS_VN_POLL: 1087 { 1088 struct puffs_vnreq_poll *auxt = auxbuf; 1089 if (pops->puffs_node_poll == NULL) { 1090 error = 0; 1091 break; 1092 } 1093 1094 error = pops->puffs_node_poll(pcc, 1095 preq->preq_cookie, preq-); 1096 break; 1097 } 1098 1099 case PUFFS_VN_KQFILTER: 1100 { 1101 struct puffs_vnreq_kqfilter *auxt = auxbuf; 1102 if (pops->puffs_node_kqfilter == NULL) { 1103 error = 0; 1104 break; 1105 } 1106 1107 error = pops->puffs_node_kqfilter(pcc, 1108 preq->preq_cookie, ); 1109 break; 1110 } 1111 1112 case PUFFS_VN_CLOSEEXTATTR: 1113 { 1114 struct puffs_vnreq_closeextattr *auxt = auxbuf; 1115 if (pops->puffs_closeextattr == NULL) { 1116 error = 0; 1117 break; 1118 } 1119 1120 error = pops->puffs_closeextattr(pcc, 1121 preq->preq_cookie, ); 1122 break; 1123 } 1124 1125 case PUFFS_VN_GETEXTATTR: 1126 { 1127 struct puffs_vnreq_getextattr *auxt = auxbuf; 1128 if (pops->puffs_getextattr == NULL) { 1129 error = 0; 1130 break; 1131 } 1132 1133 error = pops->puffs_getextattr(pcc, 1134 preq->preq_cookie, ); 1135 break; 1136 } 1137 1138 case PUFFS_VN_LISTEXTATTR: 1139 { 1140 struct puffs_vnreq_listextattr *auxt = auxbuf; 1141 if (pops->puffs_listextattr == NULL) { 1142 error = 0; 1143 break; 1144 } 1145 1146 error = pops->puffs_listextattr(pcc, 1147 preq->preq_cookie, ); 1148 break; 1149 } 1150 1151 case PUFFS_VN_OPENEXTATTR: 1152 { 1153 struct puffs_vnreq_openextattr *auxt = auxbuf; 1154 if (pops->puffs_openextattr == NULL) { 1155 error = 0; 1156 break; 1157 } 1158 1159 error = pops->puffs_openextattr(pcc, 1160 preq->preq_cookie, ); 1161 break; 1162 } 1163 1164 case PUFFS_VN_DELETEEXTATTR: 1165 { 1166 struct puffs_vnreq_deleteextattr *auxt = auxbuf; 1167 if (pops->puffs_deleteextattr == NULL) { 1168 error = 0; 1169 break; 1170 } 1171 1172 error = pops->puffs_deleteextattr(pcc, 1173 preq->preq_cookie, ); 1174 break; 1175 } 1176 1177 case PUFFS_VN_SETEXTATTR: 1178 { 1179 struct puffs_vnreq_setextattr *auxt = auxbuf; 1180 if (pops->puffs_setextattr == NULL) { 1181 error = 0; 1182 break; 1183 } 1184 1185 error = pops->puffs_setextattr(pcc, 1186 preq->preq_cookie, ); 1187 break; 1188 } 1189 1190 #endif 1191
Indexes created Thu Sep 25 16:09:42 GMT 2025