puffs.c revision 1.26
1 /* $NetBSD: puffs.c,v 1.26 2007/01/20 13:52:14 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 1.26 2007/01/20 13:52:14 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_path_buildpath; 236 pu->pu_pathfree = puffs_path_freepath; 237 pu->pu_pathcmp = puffs_path_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_putreq *ppr, 345 struct puffs_req *preq) 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(ppr, pcc); 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_putreq *ppr, struct puffs_cc *pcc) 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 default: 452 /* 453 * I guess the kernel sees this one coming 454 */ 455 error = EINVAL; 456 break; 457 } 458 459 /* XXX: audit return values */ 460 /* XXX: sync with kernel */ 461 } else if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VN) { 462 switch (preq->preq_optype) { 463 case PUFFS_VN_LOOKUP: 464 { 465 struct puffs_vnreq_lookup *auxt = auxbuf; 466 struct puffs_cn pcn; 467 468 pcn.pcn_pkcnp = &auxt->pvnr_cn; 469 if (buildpath) { 470 if (pcn.pcn_flags & PUFFS_ISDOTDOT) { 471 buildpath = 0; 472 } else { 473 error = puffs_path_pcnbuild(pu, &pcn, 474 preq->preq_cookie); 475 if (error) 476 break; 477 } 478 } 479 480 /* lookup *must* be present */ 481 error = pops->puffs_node_lookup(pcc, preq->preq_cookie, 482 &auxt->pvnr_newnode, &auxt->pvnr_vtype, 483 &auxt->pvnr_size, &auxt->pvnr_rdev, &pcn); 484 485 if (buildpath) { 486 if (error) { 487 pu->pu_pathfree(pu, &pcn.pcn_po_full); 488 } else { 489 struct puffs_node *pn; 490 491 /* 492 * did we get a new node or a 493 * recycled node? 494 * XXX: mapping assumption 495 */ 496 pn = PU_CMAP(pu, auxt->pvnr_newnode); 497 if (pn->pn_po.po_path == NULL) 498 pn->pn_po = pcn.pcn_po_full; 499 else 500 pu->pu_pathfree(pu, 501 &pcn.pcn_po_full); 502 } 503 } 504 505 break; 506 } 507 508 case PUFFS_VN_CREATE: 509 { 510 struct puffs_vnreq_create *auxt = auxbuf; 511 struct puffs_cn pcn; 512 if (pops->puffs_node_create == NULL) { 513 error = 0; 514 break; 515 } 516 517 pcn.pcn_pkcnp = &auxt->pvnr_cn; 518 if (buildpath) { 519 error = puffs_path_pcnbuild(pu, &pcn, 520 preq->preq_cookie); 521 if (error) 522 break; 523 } 524 525 error = pops->puffs_node_create(pcc, 526 preq->preq_cookie, &auxt->pvnr_newnode, 527 &pcn, &auxt->pvnr_va); 528 529 if (buildpath) { 530 if (error) { 531 pu->pu_pathfree(pu, &pcn.pcn_po_full); 532 } else { 533 struct puffs_node *pn; 534 535 pn = PU_CMAP(pu, auxt->pvnr_newnode); 536 pn->pn_po = pcn.pcn_po_full; 537 } 538 } 539 540 break; 541 } 542 543 case PUFFS_VN_MKNOD: 544 { 545 struct puffs_vnreq_mknod *auxt = auxbuf; 546 struct puffs_cn pcn; 547 if (pops->puffs_node_mknod == NULL) { 548 error = 0; 549 break; 550 } 551 552 pcn.pcn_pkcnp = &auxt->pvnr_cn; 553 if (buildpath) { 554 error = puffs_path_pcnbuild(pu, &pcn, 555 preq->preq_cookie); 556 if (error) 557 break; 558 } 559 560 error = pops->puffs_node_mknod(pcc, 561 preq->preq_cookie, &auxt->pvnr_newnode, 562 &pcn, &auxt->pvnr_va); 563 564 if (buildpath) { 565 if (error) { 566 pu->pu_pathfree(pu, &pcn.pcn_po_full); 567 } else { 568 struct puffs_node *pn; 569 570 pn = PU_CMAP(pu, auxt->pvnr_newnode); 571 pn->pn_po = pcn.pcn_po_full; 572 } 573 } 574 575 break; 576 } 577 578 case PUFFS_VN_OPEN: 579 { 580 struct puffs_vnreq_open *auxt = auxbuf; 581 if (pops->puffs_node_open == NULL) { 582 error = 0; 583 break; 584 } 585 586 error = pops->puffs_node_open(pcc, 587 preq->preq_cookie, auxt->pvnr_mode, 588 &auxt->pvnr_cred, auxt->pvnr_pid); 589 break; 590 } 591 592 case PUFFS_VN_CLOSE: 593 { 594 struct puffs_vnreq_close *auxt = auxbuf; 595 if (pops->puffs_node_close == NULL) { 596 error = 0; 597 break; 598 } 599 600 error = pops->puffs_node_close(pcc, 601 preq->preq_cookie, auxt->pvnr_fflag, 602 &auxt->pvnr_cred, auxt->pvnr_pid); 603 break; 604 } 605 606 case PUFFS_VN_ACCESS: 607 { 608 struct puffs_vnreq_access *auxt = auxbuf; 609 if (pops->puffs_node_access == NULL) { 610 error = 0; 611 break; 612 } 613 614 error = pops->puffs_node_access(pcc, 615 preq->preq_cookie, auxt->pvnr_mode, 616 &auxt->pvnr_cred, auxt->pvnr_pid); 617 break; 618 } 619 620 case PUFFS_VN_GETATTR: 621 { 622 struct puffs_vnreq_getattr *auxt = auxbuf; 623 if (pops->puffs_node_getattr == NULL) { 624 error = EOPNOTSUPP; 625 break; 626 } 627 628 error = pops->puffs_node_getattr(pcc, 629 preq->preq_cookie, &auxt->pvnr_va, 630 &auxt->pvnr_cred, auxt->pvnr_pid); 631 break; 632 } 633 634 case PUFFS_VN_SETATTR: 635 { 636 struct puffs_vnreq_setattr *auxt = auxbuf; 637 if (pops->puffs_node_setattr == NULL) { 638 error = EOPNOTSUPP; 639 break; 640 } 641 642 error = pops->puffs_node_setattr(pcc, 643 preq->preq_cookie, &auxt->pvnr_va, 644 &auxt->pvnr_cred, auxt->pvnr_pid); 645 break; 646 } 647 648 case PUFFS_VN_MMAP: 649 { 650 struct puffs_vnreq_mmap *auxt = auxbuf; 651 if (pops->puffs_node_mmap == NULL) { 652 error = 0; 653 break; 654 } 655 656 error = pops->puffs_node_mmap(pcc, 657 preq->preq_cookie, auxt->pvnr_fflags, 658 &auxt->pvnr_cred, auxt->pvnr_pid); 659 break; 660 } 661 662 case PUFFS_VN_FSYNC: 663 { 664 struct puffs_vnreq_fsync *auxt = auxbuf; 665 if (pops->puffs_node_fsync == NULL) { 666 error = 0; 667 break; 668 } 669 670 error = pops->puffs_node_fsync(pcc, 671 preq->preq_cookie, &auxt->pvnr_cred, 672 auxt->pvnr_flags, auxt->pvnr_offlo, 673 auxt->pvnr_offhi, auxt->pvnr_pid); 674 break; 675 } 676 677 case PUFFS_VN_SEEK: 678 { 679 struct puffs_vnreq_seek *auxt = auxbuf; 680 if (pops->puffs_node_seek == NULL) { 681 error = 0; 682 break; 683 } 684 685 error = pops->puffs_node_seek(pcc, 686 preq->preq_cookie, auxt->pvnr_oldoff, 687 auxt->pvnr_newoff, &auxt->pvnr_cred); 688 break; 689 } 690 691 case PUFFS_VN_REMOVE: 692 { 693 struct puffs_vnreq_remove *auxt = auxbuf; 694 struct puffs_cn pcn; 695 if (pops->puffs_node_remove == NULL) { 696 error = 0; 697 break; 698 } 699 700 pcn.pcn_pkcnp = &auxt->pvnr_cn; 701 702 error = pops->puffs_node_remove(pcc, 703 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 704 break; 705 } 706 707 case PUFFS_VN_LINK: 708 { 709 struct puffs_vnreq_link *auxt = auxbuf; 710 struct puffs_cn pcn; 711 if (pops->puffs_node_link == NULL) { 712 error = 0; 713 break; 714 } 715 716 pcn.pcn_pkcnp = &auxt->pvnr_cn; 717 if (buildpath) { 718 error = puffs_path_pcnbuild(pu, &pcn, 719 preq->preq_cookie); 720 if (error) 721 break; 722 } 723 724 error = pops->puffs_node_link(pcc, 725 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 726 if (buildpath) 727 pu->pu_pathfree(pu, &pcn.pcn_po_full); 728 729 break; 730 } 731 732 case PUFFS_VN_RENAME: 733 { 734 struct puffs_vnreq_rename *auxt = auxbuf; 735 struct puffs_cn pcn_src, pcn_targ; 736 struct puffs_node *pn_src; 737 738 if (pops->puffs_node_rename == NULL) { 739 error = 0; 740 break; 741 } 742 743 pcn_src.pcn_pkcnp = &auxt->pvnr_cn_src; 744 pcn_targ.pcn_pkcnp = &auxt->pvnr_cn_targ; 745 if (buildpath) { 746 pn_src = auxt->pvnr_cookie_src; 747 pcn_src.pcn_po_full = pn_src->pn_po; 748 749 error = puffs_path_pcnbuild(pu, &pcn_targ, 750 auxt->pvnr_cookie_targdir); 751 if (error) 752 break; 753 } 754 755 error = pops->puffs_node_rename(pcc, 756 preq->preq_cookie, auxt->pvnr_cookie_src, 757 &pcn_src, auxt->pvnr_cookie_targdir, 758 auxt->pvnr_cookie_targ, &pcn_targ); 759 760 if (buildpath) { 761 if (error) { 762 pu->pu_pathfree(pu, 763 &pcn_targ.pcn_po_full); 764 } else { 765 struct puffs_pathinfo pi; 766 struct puffs_pathobj po_old; 767 768 /* handle this node */ 769 po_old = pn_src->pn_po; 770 pn_src->pn_po = pcn_targ.pcn_po_full; 771 772 if (pn_src->pn_va.va_type != VDIR) { 773 pu->pu_pathfree(pu, &po_old); 774 break; 775 } 776 777 /* handle all child nodes for DIRs */ 778 pi.pi_old = &pcn_src.pcn_po_full; 779 pi.pi_new = &pcn_targ.pcn_po_full; 780 781 if (puffs_pn_nodewalk(pu, 782 puffs_path_prefixadj, &pi) != NULL) 783 error = ENOMEM; 784 pu->pu_pathfree(pu, &po_old); 785 } 786 } 787 break; 788 } 789 790 case PUFFS_VN_MKDIR: 791 { 792 struct puffs_vnreq_mkdir *auxt = auxbuf; 793 struct puffs_cn pcn; 794 if (pops->puffs_node_mkdir == NULL) { 795 error = 0; 796 break; 797 } 798 799 pcn.pcn_pkcnp = &auxt->pvnr_cn; 800 if (buildpath) { 801 error = puffs_path_pcnbuild(pu, &pcn, 802 preq->preq_cookie); 803 if (error) 804 break; 805 } 806 807 error = pops->puffs_node_mkdir(pcc, 808 preq->preq_cookie, &auxt->pvnr_newnode, 809 &pcn, &auxt->pvnr_va); 810 811 if (buildpath) { 812 if (error) { 813 pu->pu_pathfree(pu, &pcn.pcn_po_full); 814 } else { 815 struct puffs_node *pn; 816 817 pn = PU_CMAP(pu, auxt->pvnr_newnode); 818 pn->pn_po = pcn.pcn_po_full; 819 } 820 } 821 822 break; 823 } 824 825 case PUFFS_VN_RMDIR: 826 { 827 struct puffs_vnreq_rmdir *auxt = auxbuf; 828 struct puffs_cn pcn; 829 if (pops->puffs_node_rmdir == NULL) { 830 error = 0; 831 break; 832 } 833 834 pcn.pcn_pkcnp = &auxt->pvnr_cn; 835 836 error = pops->puffs_node_rmdir(pcc, 837 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 838 break; 839 } 840 841 case PUFFS_VN_SYMLINK: 842 { 843 struct puffs_vnreq_symlink *auxt = auxbuf; 844 struct puffs_cn pcn; 845 if (pops->puffs_node_symlink == NULL) { 846 error = 0; 847 break; 848 } 849 850 pcn.pcn_pkcnp = &auxt->pvnr_cn; 851 if (buildpath) { 852 error = puffs_path_pcnbuild(pu, &pcn, 853 preq->preq_cookie); 854 if (error) 855 break; 856 } 857 858 error = pops->puffs_node_symlink(pcc, 859 preq->preq_cookie, &auxt->pvnr_newnode, 860 &pcn, &auxt->pvnr_va, auxt->pvnr_link); 861 862 if (buildpath) { 863 if (error) { 864 pu->pu_pathfree(pu, &pcn.pcn_po_full); 865 } else { 866 struct puffs_node *pn; 867 868 pn = PU_CMAP(pu, auxt->pvnr_newnode); 869 pn->pn_po = pcn.pcn_po_full; 870 } 871 } 872 873 break; 874 } 875 876 case PUFFS_VN_READDIR: 877 { 878 struct puffs_vnreq_readdir *auxt = auxbuf; 879 size_t res; 880 881 if (pops->puffs_node_readdir == NULL) { 882 error = 0; 883 break; 884 } 885 886 res = auxt->pvnr_resid; 887 error = pops->puffs_node_readdir(pcc, 888 preq->preq_cookie, auxt->pvnr_dent, 889 &auxt->pvnr_cred, &auxt->pvnr_offset, 890 &auxt->pvnr_resid); 891 892 /* need to move a bit more */ 893 preq->preq_buflen = sizeof(struct puffs_vnreq_readdir) 894 + (res - auxt->pvnr_resid); 895 break; 896 } 897 898 case PUFFS_VN_READLINK: 899 { 900 struct puffs_vnreq_readlink *auxt = auxbuf; 901 if (pops->puffs_node_readlink == NULL) { 902 error = EOPNOTSUPP; 903 break; 904 } 905 906 error = pops->puffs_node_readlink(pcc, 907 preq->preq_cookie, &auxt->pvnr_cred, 908 auxt->pvnr_link, &auxt->pvnr_linklen); 909 break; 910 } 911 912 case PUFFS_VN_RECLAIM: 913 { 914 struct puffs_vnreq_reclaim *auxt = auxbuf; 915 if (pops->puffs_node_reclaim == NULL) { 916 error = 0; 917 break; 918 } 919 920 error = pops->puffs_node_reclaim(pcc, 921 preq->preq_cookie, auxt->pvnr_pid); 922 break; 923 } 924 925 case PUFFS_VN_INACTIVE: 926 { 927 struct puffs_vnreq_inactive *auxt = auxbuf; 928 if (pops->puffs_node_inactive == NULL) { 929 error = EOPNOTSUPP; 930 break; 931 } 932 933 error = pops->puffs_node_inactive(pcc, 934 preq->preq_cookie, auxt->pvnr_pid, 935 &auxt->pvnr_backendrefs); 936 break; 937 } 938 939 case PUFFS_VN_PATHCONF: 940 { 941 struct puffs_vnreq_pathconf *auxt = auxbuf; 942 if (pops->puffs_node_pathconf == NULL) { 943 error = 0; 944 break; 945 } 946 947 error = pops->puffs_node_pathconf(pcc, 948 preq->preq_cookie, auxt->pvnr_name, 949 &auxt->pvnr_retval); 950 break; 951 } 952 953 case PUFFS_VN_ADVLOCK: 954 { 955 struct puffs_vnreq_advlock *auxt = auxbuf; 956 if (pops->puffs_node_advlock == NULL) { 957 error = 0; 958 break; 959 } 960 961 error = pops->puffs_node_advlock(pcc, 962 preq->preq_cookie, auxt->pvnr_id, auxt->pvnr_op, 963 &auxt->pvnr_fl, auxt->pvnr_flags); 964 break; 965 } 966 967 case PUFFS_VN_PRINT: 968 { 969 if (pops->puffs_node_print == NULL) { 970 error = 0; 971 break; 972 } 973 974 error = pops->puffs_node_print(pcc, 975 preq->preq_cookie); 976 break; 977 } 978 979 case PUFFS_VN_READ: 980 { 981 struct puffs_vnreq_read *auxt = auxbuf; 982 size_t res; 983 984 if (pops->puffs_node_read == NULL) { 985 error = EIO; 986 break; 987 } 988 989 res = auxt->pvnr_resid; 990 error = pops->puffs_node_read(pcc, 991 preq->preq_cookie, auxt->pvnr_data, 992 auxt->pvnr_offset, &auxt->pvnr_resid, 993 &auxt->pvnr_cred, auxt->pvnr_ioflag); 994 995 /* need to move a bit more */ 996 preq->preq_buflen = sizeof(struct puffs_vnreq_read) 997 + (res - auxt->pvnr_resid); 998 break; 999 } 1000 1001 case PUFFS_VN_WRITE: 1002 { 1003 struct puffs_vnreq_write *auxt = auxbuf; 1004 1005 if (pops->puffs_node_write == NULL) { 1006 error = EIO; 1007 break; 1008 } 1009 1010 error = pops->puffs_node_write(pcc, 1011 preq->preq_cookie, auxt->pvnr_data, 1012 auxt->pvnr_offset, &auxt->pvnr_resid, 1013 &auxt->pvnr_cred, auxt->pvnr_ioflag); 1014 1015 /* don't need to move data back to the kernel */ 1016 preq->preq_buflen = sizeof(struct puffs_vnreq_write); 1017 break; 1018 } 1019 1020 /* holy bitrot, ryydman! */ 1021 #if 0 1022 case PUFFS_VN_IOCTL: 1023 error = pops->puffs_node_ioctl1(pcc, preq->preq_cookie, 1024 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1025 if (error != 0) 1026 break; 1027 pop.pso_reqid = preq->preq_id; 1028 1029 /* let the kernel do it's intermediate duty */ 1030 error = ioctl(pu->pu_fd, PUFFSSIZEOP, &pop); 1031 /* 1032 * XXX: I don't actually know what the correct 1033 * thing to do in case of an error is, so I'll 1034 * just ignore it for the time being. 1035 */ 1036 error = pops->puffs_node_ioctl2(pcc, preq->preq_cookie, 1037 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1038 break; 1039 1040 case PUFFS_VN_FCNTL: 1041 error = pops->puffs_node_fcntl1(pcc, preq->preq_cookie, 1042 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1043 if (error != 0) 1044 break; 1045 pop.pso_reqid = preq->preq_id; 1046 1047 /* let the kernel do it's intermediate duty */ 1048 error = ioctl(pu->pu_fd, PUFFSSIZEOP, &pop); 1049 /* 1050 * XXX: I don't actually know what the correct 1051 * thing to do in case of an error is, so I'll 1052 * just ignore it for the time being. 1053 */ 1054 error = pops->puffs_node_fcntl2(pcc, preq->preq_cookie, 1055 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1056 break; 1057 #endif 1058 1059 default: 1060 printf("inval op %d\n", preq->preq_optype); 1061 error = EINVAL; 1062 break; 1063 } 1064 } else { 1065 /* 1066 * this one also 1067 */ 1068 error = EINVAL; 1069 } 1070 1071 preq->preq_rv = error; 1072 1073 pcc->pcc_rv = rv; 1074 pcc->pcc_flags |= PCC_DONE; 1075 } 1076 1077 1078 #if 0 1079 case PUFFS_VN_POLL: 1080 { 1081 struct puffs_vnreq_poll *auxt = auxbuf; 1082 if (pops->puffs_node_poll == NULL) { 1083 error = 0; 1084 break; 1085 } 1086 1087 error = pops->puffs_node_poll(pcc, 1088 preq->preq_cookie, preq-); 1089 break; 1090 } 1091 1092 case PUFFS_VN_KQFILTER: 1093 { 1094 struct puffs_vnreq_kqfilter *auxt = auxbuf; 1095 if (pops->puffs_node_kqfilter == NULL) { 1096 error = 0; 1097 break; 1098 } 1099 1100 error = pops->puffs_node_kqfilter(pcc, 1101 preq->preq_cookie, ); 1102 break; 1103 } 1104 1105 case PUFFS_VN_CLOSEEXTATTR: 1106 { 1107 struct puffs_vnreq_closeextattr *auxt = auxbuf; 1108 if (pops->puffs_closeextattr == NULL) { 1109 error = 0; 1110 break; 1111 } 1112 1113 error = pops->puffs_closeextattr(pcc, 1114 preq->preq_cookie, ); 1115 break; 1116 } 1117 1118 case PUFFS_VN_GETEXTATTR: 1119 { 1120 struct puffs_vnreq_getextattr *auxt = auxbuf; 1121 if (pops->puffs_getextattr == NULL) { 1122 error = 0; 1123 break; 1124 } 1125 1126 error = pops->puffs_getextattr(pcc, 1127 preq->preq_cookie, ); 1128 break; 1129 } 1130 1131 case PUFFS_VN_LISTEXTATTR: 1132 { 1133 struct puffs_vnreq_listextattr *auxt = auxbuf; 1134 if (pops->puffs_listextattr == NULL) { 1135 error = 0; 1136 break; 1137 } 1138 1139 error = pops->puffs_listextattr(pcc, 1140 preq->preq_cookie, ); 1141 break; 1142 } 1143 1144 case PUFFS_VN_OPENEXTATTR: 1145 { 1146 struct puffs_vnreq_openextattr *auxt = auxbuf; 1147 if (pops->puffs_openextattr == NULL) { 1148 error = 0; 1149 break; 1150 } 1151 1152 error = pops->puffs_openextattr(pcc, 1153 preq->preq_cookie, ); 1154 break; 1155 } 1156 1157 case PUFFS_VN_DELETEEXTATTR: 1158 { 1159 struct puffs_vnreq_deleteextattr *auxt = auxbuf; 1160 if (pops->puffs_deleteextattr == NULL) { 1161 error = 0; 1162 break; 1163 } 1164 1165 error = pops->puffs_deleteextattr(pcc, 1166 preq->preq_cookie, ); 1167 break; 1168 } 1169 1170 case PUFFS_VN_SETEXTATTR: 1171 { 1172 struct puffs_vnreq_setextattr *auxt = auxbuf; 1173 if (pops->puffs_setextattr == NULL) { 1174 error = 0; 1175 break; 1176 } 1177 1178 error = pops->puffs_setextattr(pcc, 1179 preq->preq_cookie, ); 1180 break; 1181 } 1182 1183 #endif 1184
Indexes created Mon Sep 22 13:09:51 GMT 2025