puffs.c revision 1.40
1 /* $NetBSD: puffs.c,v 1.40 2007/05/07 17:16:07 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 1.40 2007/05/07 17:16:07 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_kargs.pa_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_kargs.pa_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 void 154 puffs_setroot(struct puffs_usermount *pu, struct puffs_node *pn) 155 { 156 157 pu->pu_pn_root = pn; 158 } 159 160 struct puffs_node * 161 puffs_getroot(struct puffs_usermount *pu) 162 { 163 164 return pu->pu_pn_root; 165 } 166 167 void * 168 puffs_getspecific(struct puffs_usermount *pu) 169 { 170 171 return pu->pu_privdata; 172 } 173 174 size_t 175 puffs_getmaxreqlen(struct puffs_usermount *pu) 176 { 177 178 return pu->pu_kargs.pa_maxreqlen; 179 } 180 181 void 182 puffs_setmaxreqlen(struct puffs_usermount *pu, size_t reqlen) 183 { 184 185 if (pu->pu_state != PUFFS_STATE_BEFOREMOUNT) 186 warnx("puffs_setmaxreqlen: call has effect only " 187 "before mount\n"); 188 189 pu->pu_kargs.pa_maxreqlen = reqlen; 190 } 191 192 void 193 puffs_setfhsize(struct puffs_usermount *pu, size_t fhsize, int flags) 194 { 195 196 if (pu->pu_state != PUFFS_STATE_BEFOREMOUNT) 197 warnx("puffs_setfhsize: call has effect only before mount\n"); 198 199 pu->pu_kargs.pa_fhsize = fhsize; 200 pu->pu_kargs.pa_fhflags = flags; 201 } 202 203 void 204 puffs_setncookiehash(struct puffs_usermount *pu, int nhash) 205 { 206 207 if (pu->pu_state != PUFFS_STATE_BEFOREMOUNT) 208 warnx("puffs_setfhsize: call has effect only before mount\n"); 209 210 pu->pu_kargs.pa_nhashbuckets = nhash; 211 } 212 213 void 214 puffs_set_pathbuild(struct puffs_usermount *pu, pu_pathbuild_fn fn) 215 { 216 217 pu->pu_pathbuild = fn; 218 } 219 220 void 221 puffs_set_pathtransform(struct puffs_usermount *pu, pu_pathtransform_fn fn) 222 { 223 224 pu->pu_pathtransform = fn; 225 } 226 227 void 228 puffs_set_pathcmp(struct puffs_usermount *pu, pu_pathcmp_fn fn) 229 { 230 231 pu->pu_pathcmp = fn; 232 } 233 234 void 235 puffs_set_pathfree(struct puffs_usermount *pu, pu_pathfree_fn fn) 236 { 237 238 pu->pu_pathfree = fn; 239 } 240 241 void 242 puffs_set_namemod(struct puffs_usermount *pu, pu_namemod_fn fn) 243 { 244 245 pu->pu_namemod = fn; 246 } 247 248 void 249 puffs_setback(struct puffs_cc *pcc, int whatback) 250 { 251 struct puffs_req *preq = pcc->pcc_preq; 252 253 assert(PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VN && ( 254 preq->preq_optype == PUFFS_VN_OPEN || 255 preq->preq_optype == PUFFS_VN_MMAP || 256 preq->preq_optype == PUFFS_VN_REMOVE || 257 preq->preq_optype == PUFFS_VN_RMDIR)); 258 259 preq->preq_setbacks |= whatback & PUFFS_SETBACK_MASK; 260 } 261 262 int 263 puffs_domount(struct puffs_usermount *pu, const char *dir, int mntflags) 264 { 265 266 #if 1 267 /* XXXkludgehere */ 268 /* kauth doesn't provide this service any longer */ 269 if (geteuid() != 0) 270 mntflags |= MNT_NOSUID | MNT_NODEV; 271 #endif 272 273 if (mount(MOUNT_PUFFS, dir, mntflags, &pu->pu_kargs) == -1) 274 return -1; 275 pu->pu_state = PUFFS_STATE_MOUNTING; 276 277 return 0; 278 } 279 280 struct puffs_usermount * 281 _puffs_init(int develv, struct puffs_ops *pops, const char *puffsname, 282 void *priv, uint32_t pflags) 283 { 284 struct puffs_usermount *pu; 285 struct puffs_kargs *pargs; 286 int fd; 287 288 if (develv != PUFFS_DEVEL_LIBVERSION) { 289 warnx("puffs_mount: mounting with lib version %d, need %d", 290 develv, PUFFS_DEVEL_LIBVERSION); 291 errno = EINVAL; 292 return NULL; 293 } 294 295 fd = open("/dev/puffs", O_RDONLY); 296 if (fd == -1) 297 return NULL; 298 if (fd <= 2) 299 warnx("puffs_mount: device fd %d (<= 2), sure this is " 300 "what you want?", fd); 301 302 pu = malloc(sizeof(struct puffs_usermount)); 303 if (pu == NULL) 304 goto failfree; 305 306 pargs = &pu->pu_kargs; 307 memset(pargs, 0, sizeof(struct puffs_kargs)); 308 pargs->pa_vers = PUFFSDEVELVERS | PUFFSVERSION; 309 pargs->pa_flags = PUFFS_FLAG_KERN(pflags); 310 pargs->pa_fd = fd; 311 fillvnopmask(pops, pargs->pa_vnopmask); 312 (void)strlcpy(pargs->pa_name, puffsname, sizeof(pargs->pa_name)); 313 314 pu->pu_flags = pflags; 315 pu->pu_ops = *pops; 316 free(pops); /* XXX */ 317 318 pu->pu_privdata = priv; 319 pu->pu_cc_stacksize = PUFFS_CC_STACKSIZE_DEFAULT; 320 LIST_INIT(&pu->pu_pnodelst); 321 322 /* defaults for some user-settable translation functions */ 323 pu->pu_cmap = NULL; /* identity translation */ 324 325 pu->pu_pathbuild = puffs_stdpath_buildpath; 326 pu->pu_pathfree = puffs_stdpath_freepath; 327 pu->pu_pathcmp = puffs_stdpath_cmppath; 328 pu->pu_pathtransform = NULL; 329 pu->pu_namemod = NULL; 330 331 pu->pu_state = PUFFS_STATE_BEFOREMOUNT; 332 333 return pu; 334 335 failfree: 336 /* can't unmount() from here for obvious reasons */ 337 close(fd); 338 free(pu); 339 return NULL; 340 } 341 342 struct puffs_usermount * 343 _puffs_mount(int develv, struct puffs_ops *pops, const char *dir, int mntflags, 344 const char *puffsname, void *priv, uint32_t pflags) 345 { 346 struct puffs_usermount *pu; 347 int sverrno; 348 349 pu = _puffs_init(develv, pops, puffsname, priv, pflags); 350 if (pu == NULL) 351 return NULL; 352 353 if (puffs_domount(pu, dir, mntflags) == -1) { 354 sverrno = errno; 355 puffs_exit(pu, 1); 356 errno = sverrno; 357 return NULL; 358 } 359 360 return pu; 361 } 362 363 int 364 puffs_start(struct puffs_usermount *pu, void *rootcookie, struct statvfs *sbp) 365 { 366 struct puffs_startreq sreq; 367 368 memset(&sreq, 0, sizeof(struct puffs_startreq)); 369 sreq.psr_cookie = rootcookie; 370 sreq.psr_sb = *sbp; 371 372 /* tell kernel we're flying */ 373 if (ioctl(pu->pu_kargs.pa_fd, PUFFSSTARTOP, &sreq) == -1) 374 return -1; 375 376 pu->pu_state = PUFFS_STATE_RUNNING; 377 378 return 0; 379 } 380 381 /* 382 * XXX: there's currently no clean way to request unmount from 383 * within the user server, so be very brutal about it. 384 */ 385 /*ARGSUSED1*/ 386 int 387 puffs_exit(struct puffs_usermount *pu, int force) 388 { 389 struct puffs_node *pn, *pn_next; 390 391 force = 1; /* currently */ 392 393 if (pu->pu_kargs.pa_fd) 394 close(pu->pu_kargs.pa_fd); 395 396 pn = LIST_FIRST(&pu->pu_pnodelst); 397 while (pn) { 398 pn_next = LIST_NEXT(pn, pn_entries); 399 puffs_pn_put(pn); 400 pn = pn_next; 401 } 402 free(pu); 403 404 return 0; /* always succesful for now, WILL CHANGE */ 405 } 406 407 int 408 puffs_mainloop(struct puffs_usermount *pu, int flags) 409 { 410 struct puffs_getreq *pgr; 411 struct puffs_putreq *ppr; 412 int rv; 413 414 rv = -1; 415 pgr = puffs_req_makeget(pu, puffs_getmaxreqlen(pu), 0); 416 if (pgr == NULL) 417 return -1; 418 419 ppr = puffs_req_makeput(pu); 420 if (ppr == NULL) { 421 puffs_req_destroyget(pgr); 422 return -1; 423 } 424 425 if ((flags & PUFFSLOOP_NODAEMON) == 0) 426 if (daemon(1, 0) == -1) 427 goto out; 428 429 /* XXX: should be a bit more robust with errors here */ 430 while (puffs_getstate(pu) == PUFFS_STATE_RUNNING 431 || puffs_getstate(pu) == PUFFS_STATE_UNMOUNTING) { 432 puffs_req_resetput(ppr); 433 434 if (puffs_req_handle(pu, pgr, ppr, 0) == -1) { 435 rv = -1; 436 break; 437 } 438 if (puffs_req_putput(ppr) == -1) { 439 rv = -1; 440 break; 441 } 442 } 443 444 out: 445 puffs_req_destroyput(ppr); 446 puffs_req_destroyget(pgr); 447 return rv; 448 } 449 450 int 451 puffs_dopreq(struct puffs_usermount *pu, struct puffs_req *preq, 452 struct puffs_putreq *ppr) 453 { 454 struct puffs_cc *pcc; 455 int rv; 456 457 /* 458 * XXX: the structure is currently a mess. anyway, trap 459 * the cacheops here already, since they don't need a cc. 460 * I really should get around to revamping the operation 461 * dispatching code one of these days. 462 */ 463 if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_CACHE) { 464 struct puffs_cacheinfo *pci = (void *)preq; 465 466 if (pu->pu_ops.puffs_cache_write == NULL) 467 return 0; 468 469 pu->pu_ops.puffs_cache_write(pu, preq->preq_cookie, 470 pci->pcache_nruns, pci->pcache_runs); 471 } 472 473 if (pu->pu_flags & PUFFS_FLAG_OPDUMP) 474 puffsdump_req(preq); 475 476 pcc = puffs_cc_create(pu); 477 478 /* XXX: temporary kludging */ 479 pcc->pcc_preq = malloc(preq->preq_buflen); 480 if (pcc->pcc_preq == NULL) 481 return -1; 482 (void) memcpy(pcc->pcc_preq, preq, preq->preq_buflen); 483 484 rv = puffs_docc(pcc, ppr); 485 486 if ((pcc->pcc_flags & PCC_DONE) == 0) 487 return 0; 488 489 return rv; 490 } 491 492 enum {PUFFCALL_ANSWER, PUFFCALL_IGNORE, PUFFCALL_AGAIN}; 493 494 int 495 puffs_docc(struct puffs_cc *pcc, struct puffs_putreq *ppr) 496 { 497 struct puffs_usermount *pu = pcc->pcc_pu; 498 int rv; 499 500 assert((pcc->pcc_flags & PCC_DONE) == 0); 501 502 puffs_cc_continue(pcc); 503 rv = pcc->pcc_rv; 504 505 if ((pcc->pcc_flags & PCC_DONE) == 0) 506 rv = PUFFCALL_AGAIN; 507 508 /* check if we need to store this reply */ 509 switch (rv) { 510 case PUFFCALL_ANSWER: 511 if (pu->pu_flags & PUFFS_FLAG_OPDUMP) 512 puffsdump_rv(pcc->pcc_preq); 513 514 puffs_req_putcc(ppr, pcc); 515 break; 516 case PUFFCALL_IGNORE: 517 puffs_cc_destroy(pcc); 518 break; 519 case PUFFCALL_AGAIN: 520 break; 521 default: 522 assert(/*CONSTCOND*/0); 523 } 524 525 return 0; 526 } 527 528 /* library private, but linked from callcontext.c */ 529 530 void 531 puffs_calldispatcher(struct puffs_cc *pcc) 532 { 533 struct puffs_usermount *pu = pcc->pcc_pu; 534 struct puffs_ops *pops = &pu->pu_ops; 535 struct puffs_req *preq = pcc->pcc_preq; 536 void *auxbuf = preq; /* help with typecasting */ 537 void *opcookie = preq->preq_cookie; 538 int error, rv, buildpath; 539 540 assert(pcc->pcc_flags & (PCC_ONCE | PCC_REALCC)); 541 542 if (PUFFSOP_WANTREPLY(preq->preq_opclass)) 543 rv = PUFFCALL_ANSWER; 544 else 545 rv = PUFFCALL_IGNORE; 546 547 buildpath = pu->pu_flags & PUFFS_FLAG_BUILDPATH; 548 preq->preq_setbacks = 0; 549 550 if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VFS) { 551 switch (preq->preq_optype) { 552 case PUFFS_VFS_UNMOUNT: 553 { 554 struct puffs_vfsreq_unmount *auxt = auxbuf; 555 556 pu->pu_state = PUFFS_STATE_UNMOUNTING; 557 error = pops->puffs_fs_unmount(pcc, 558 auxt->pvfsr_flags, auxt->pvfsr_pid); 559 if (!error) 560 pu->pu_state = PUFFS_STATE_UNMOUNTED; 561 else 562 pu->pu_state = PUFFS_STATE_RUNNING; 563 break; 564 } 565 566 case PUFFS_VFS_STATVFS: 567 { 568 struct puffs_vfsreq_statvfs *auxt = auxbuf; 569 570 error = pops->puffs_fs_statvfs(pcc, 571 &auxt->pvfsr_sb, auxt->pvfsr_pid); 572 break; 573 } 574 575 case PUFFS_VFS_SYNC: 576 { 577 struct puffs_vfsreq_sync *auxt = auxbuf; 578 579 error = pops->puffs_fs_sync(pcc, 580 auxt->pvfsr_waitfor, &auxt->pvfsr_cred, 581 auxt->pvfsr_pid); 582 break; 583 } 584 585 case PUFFS_VFS_FHTOVP: 586 { 587 struct puffs_vfsreq_fhtonode *auxt = auxbuf; 588 589 error = pops->puffs_fs_fhtonode(pcc, auxt->pvfsr_data, 590 auxt->pvfsr_dsize, &auxt->pvfsr_fhcookie, 591 &auxt->pvfsr_vtype, &auxt->pvfsr_size, 592 &auxt->pvfsr_rdev); 593 594 break; 595 } 596 597 case PUFFS_VFS_VPTOFH: 598 { 599 struct puffs_vfsreq_nodetofh *auxt = auxbuf; 600 601 error = pops->puffs_fs_nodetofh(pcc, 602 auxt->pvfsr_fhcookie, auxt->pvfsr_data, 603 &auxt->pvfsr_dsize); 604 605 break; 606 } 607 608 case PUFFS_VFS_SUSPEND: 609 { 610 struct puffs_vfsreq_suspend *auxt = auxbuf; 611 612 error = 0; 613 if (pops->puffs_fs_suspend == NULL) 614 break; 615 616 pops->puffs_fs_suspend(pcc, auxt->pvfsr_status); 617 break; 618 } 619 620 default: 621 /* 622 * I guess the kernel sees this one coming 623 */ 624 error = EINVAL; 625 break; 626 } 627 628 /* XXX: audit return values */ 629 /* XXX: sync with kernel */ 630 } else if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VN) { 631 switch (preq->preq_optype) { 632 case PUFFS_VN_LOOKUP: 633 { 634 struct puffs_vnreq_lookup *auxt = auxbuf; 635 struct puffs_cn pcn; 636 637 pcn.pcn_pkcnp = &auxt->pvnr_cn; 638 if (buildpath) { 639 error = puffs_path_pcnbuild(pu, &pcn, opcookie); 640 if (error) 641 break; 642 } 643 644 /* lookup *must* be present */ 645 error = pops->puffs_node_lookup(pcc, opcookie, 646 &auxt->pvnr_newnode, &auxt->pvnr_vtype, 647 &auxt->pvnr_size, &auxt->pvnr_rdev, &pcn); 648 649 if (buildpath) { 650 if (error) { 651 pu->pu_pathfree(pu, &pcn.pcn_po_full); 652 } else { 653 struct puffs_node *pn; 654 655 /* 656 * did we get a new node or a 657 * recycled node? 658 */ 659 pn = PU_CMAP(pu, auxt->pvnr_newnode); 660 if (pn->pn_po.po_path == NULL) 661 pn->pn_po = pcn.pcn_po_full; 662 else 663 pu->pu_pathfree(pu, 664 &pcn.pcn_po_full); 665 } 666 } 667 668 break; 669 } 670 671 case PUFFS_VN_CREATE: 672 { 673 struct puffs_vnreq_create *auxt = auxbuf; 674 struct puffs_cn pcn; 675 if (pops->puffs_node_create == NULL) { 676 error = 0; 677 break; 678 } 679 680 pcn.pcn_pkcnp = &auxt->pvnr_cn; 681 if (buildpath) { 682 error = puffs_path_pcnbuild(pu, &pcn, opcookie); 683 if (error) 684 break; 685 } 686 687 error = pops->puffs_node_create(pcc, 688 opcookie, &auxt->pvnr_newnode, 689 &pcn, &auxt->pvnr_va); 690 691 if (buildpath) { 692 if (error) { 693 pu->pu_pathfree(pu, &pcn.pcn_po_full); 694 } else { 695 struct puffs_node *pn; 696 697 pn = PU_CMAP(pu, auxt->pvnr_newnode); 698 pn->pn_po = pcn.pcn_po_full; 699 } 700 } 701 702 break; 703 } 704 705 case PUFFS_VN_MKNOD: 706 { 707 struct puffs_vnreq_mknod *auxt = auxbuf; 708 struct puffs_cn pcn; 709 if (pops->puffs_node_mknod == NULL) { 710 error = 0; 711 break; 712 } 713 714 pcn.pcn_pkcnp = &auxt->pvnr_cn; 715 if (buildpath) { 716 error = puffs_path_pcnbuild(pu, &pcn, opcookie); 717 if (error) 718 break; 719 } 720 721 error = pops->puffs_node_mknod(pcc, 722 opcookie, &auxt->pvnr_newnode, 723 &pcn, &auxt->pvnr_va); 724 725 if (buildpath) { 726 if (error) { 727 pu->pu_pathfree(pu, &pcn.pcn_po_full); 728 } else { 729 struct puffs_node *pn; 730 731 pn = PU_CMAP(pu, auxt->pvnr_newnode); 732 pn->pn_po = pcn.pcn_po_full; 733 } 734 } 735 736 break; 737 } 738 739 case PUFFS_VN_OPEN: 740 { 741 struct puffs_vnreq_open *auxt = auxbuf; 742 if (pops->puffs_node_open == NULL) { 743 error = 0; 744 break; 745 } 746 747 error = pops->puffs_node_open(pcc, 748 opcookie, auxt->pvnr_mode, 749 &auxt->pvnr_cred, auxt->pvnr_pid); 750 break; 751 } 752 753 case PUFFS_VN_CLOSE: 754 { 755 struct puffs_vnreq_close *auxt = auxbuf; 756 if (pops->puffs_node_close == NULL) { 757 error = 0; 758 break; 759 } 760 761 error = pops->puffs_node_close(pcc, 762 opcookie, auxt->pvnr_fflag, 763 &auxt->pvnr_cred, auxt->pvnr_pid); 764 break; 765 } 766 767 case PUFFS_VN_ACCESS: 768 { 769 struct puffs_vnreq_access *auxt = auxbuf; 770 if (pops->puffs_node_access == NULL) { 771 error = 0; 772 break; 773 } 774 775 error = pops->puffs_node_access(pcc, 776 opcookie, auxt->pvnr_mode, 777 &auxt->pvnr_cred, auxt->pvnr_pid); 778 break; 779 } 780 781 case PUFFS_VN_GETATTR: 782 { 783 struct puffs_vnreq_getattr *auxt = auxbuf; 784 if (pops->puffs_node_getattr == NULL) { 785 error = EOPNOTSUPP; 786 break; 787 } 788 789 error = pops->puffs_node_getattr(pcc, 790 opcookie, &auxt->pvnr_va, 791 &auxt->pvnr_cred, auxt->pvnr_pid); 792 break; 793 } 794 795 case PUFFS_VN_SETATTR: 796 { 797 struct puffs_vnreq_setattr *auxt = auxbuf; 798 if (pops->puffs_node_setattr == NULL) { 799 error = EOPNOTSUPP; 800 break; 801 } 802 803 error = pops->puffs_node_setattr(pcc, 804 opcookie, &auxt->pvnr_va, 805 &auxt->pvnr_cred, auxt->pvnr_pid); 806 break; 807 } 808 809 case PUFFS_VN_MMAP: 810 { 811 struct puffs_vnreq_mmap *auxt = auxbuf; 812 if (pops->puffs_node_mmap == NULL) { 813 error = 0; 814 break; 815 } 816 817 error = pops->puffs_node_mmap(pcc, 818 opcookie, auxt->pvnr_fflags, 819 &auxt->pvnr_cred, auxt->pvnr_pid); 820 break; 821 } 822 823 case PUFFS_VN_FSYNC: 824 { 825 struct puffs_vnreq_fsync *auxt = auxbuf; 826 if (pops->puffs_node_fsync == NULL) { 827 error = 0; 828 break; 829 } 830 831 error = pops->puffs_node_fsync(pcc, 832 opcookie, &auxt->pvnr_cred, 833 auxt->pvnr_flags, auxt->pvnr_offlo, 834 auxt->pvnr_offhi, auxt->pvnr_pid); 835 break; 836 } 837 838 case PUFFS_VN_SEEK: 839 { 840 struct puffs_vnreq_seek *auxt = auxbuf; 841 if (pops->puffs_node_seek == NULL) { 842 error = 0; 843 break; 844 } 845 846 error = pops->puffs_node_seek(pcc, 847 opcookie, auxt->pvnr_oldoff, 848 auxt->pvnr_newoff, &auxt->pvnr_cred); 849 break; 850 } 851 852 case PUFFS_VN_REMOVE: 853 { 854 struct puffs_vnreq_remove *auxt = auxbuf; 855 struct puffs_cn pcn; 856 if (pops->puffs_node_remove == NULL) { 857 error = 0; 858 break; 859 } 860 861 pcn.pcn_pkcnp = &auxt->pvnr_cn; 862 863 error = pops->puffs_node_remove(pcc, 864 opcookie, auxt->pvnr_cookie_targ, &pcn); 865 break; 866 } 867 868 case PUFFS_VN_LINK: 869 { 870 struct puffs_vnreq_link *auxt = auxbuf; 871 struct puffs_cn pcn; 872 if (pops->puffs_node_link == NULL) { 873 error = 0; 874 break; 875 } 876 877 pcn.pcn_pkcnp = &auxt->pvnr_cn; 878 if (buildpath) { 879 error = puffs_path_pcnbuild(pu, &pcn, opcookie); 880 if (error) 881 break; 882 } 883 884 error = pops->puffs_node_link(pcc, 885 opcookie, auxt->pvnr_cookie_targ, &pcn); 886 if (buildpath) 887 pu->pu_pathfree(pu, &pcn.pcn_po_full); 888 889 break; 890 } 891 892 case PUFFS_VN_RENAME: 893 { 894 struct puffs_vnreq_rename *auxt = auxbuf; 895 struct puffs_cn pcn_src, pcn_targ; 896 struct puffs_node *pn_src; 897 898 if (pops->puffs_node_rename == NULL) { 899 error = 0; 900 break; 901 } 902 903 pcn_src.pcn_pkcnp = &auxt->pvnr_cn_src; 904 pcn_targ.pcn_pkcnp = &auxt->pvnr_cn_targ; 905 if (buildpath) { 906 pn_src = auxt->pvnr_cookie_src; 907 pcn_src.pcn_po_full = pn_src->pn_po; 908 909 error = puffs_path_pcnbuild(pu, &pcn_targ, 910 auxt->pvnr_cookie_targdir); 911 if (error) 912 break; 913 } 914 915 error = pops->puffs_node_rename(pcc, 916 opcookie, auxt->pvnr_cookie_src, 917 &pcn_src, auxt->pvnr_cookie_targdir, 918 auxt->pvnr_cookie_targ, &pcn_targ); 919 920 if (buildpath) { 921 if (error) { 922 pu->pu_pathfree(pu, 923 &pcn_targ.pcn_po_full); 924 } else { 925 struct puffs_pathinfo pi; 926 struct puffs_pathobj po_old; 927 928 /* handle this node */ 929 po_old = pn_src->pn_po; 930 pn_src->pn_po = pcn_targ.pcn_po_full; 931 932 if (pn_src->pn_va.va_type != VDIR) { 933 pu->pu_pathfree(pu, &po_old); 934 break; 935 } 936 937 /* handle all child nodes for DIRs */ 938 pi.pi_old = &pcn_src.pcn_po_full; 939 pi.pi_new = &pcn_targ.pcn_po_full; 940 941 if (puffs_pn_nodewalk(pu, 942 puffs_path_prefixadj, &pi) != NULL) 943 error = ENOMEM; 944 pu->pu_pathfree(pu, &po_old); 945 } 946 } 947 break; 948 } 949 950 case PUFFS_VN_MKDIR: 951 { 952 struct puffs_vnreq_mkdir *auxt = auxbuf; 953 struct puffs_cn pcn; 954 if (pops->puffs_node_mkdir == NULL) { 955 error = 0; 956 break; 957 } 958 959 pcn.pcn_pkcnp = &auxt->pvnr_cn; 960 if (buildpath) { 961 error = puffs_path_pcnbuild(pu, &pcn, opcookie); 962 if (error) 963 break; 964 } 965 966 error = pops->puffs_node_mkdir(pcc, 967 opcookie, &auxt->pvnr_newnode, 968 &pcn, &auxt->pvnr_va); 969 970 if (buildpath) { 971 if (error) { 972 pu->pu_pathfree(pu, &pcn.pcn_po_full); 973 } else { 974 struct puffs_node *pn; 975 976 pn = PU_CMAP(pu, auxt->pvnr_newnode); 977 pn->pn_po = pcn.pcn_po_full; 978 } 979 } 980 981 break; 982 } 983 984 case PUFFS_VN_RMDIR: 985 { 986 struct puffs_vnreq_rmdir *auxt = auxbuf; 987 struct puffs_cn pcn; 988 if (pops->puffs_node_rmdir == NULL) { 989 error = 0; 990 break; 991 } 992 993 pcn.pcn_pkcnp = &auxt->pvnr_cn; 994 995 error = pops->puffs_node_rmdir(pcc, 996 opcookie, auxt->pvnr_cookie_targ, &pcn); 997 break; 998 } 999 1000 case PUFFS_VN_SYMLINK: 1001 { 1002 struct puffs_vnreq_symlink *auxt = auxbuf; 1003 struct puffs_cn pcn; 1004 if (pops->puffs_node_symlink == NULL) { 1005 error = 0; 1006 break; 1007 } 1008 1009 pcn.pcn_pkcnp = &auxt->pvnr_cn; 1010 if (buildpath) { 1011 error = puffs_path_pcnbuild(pu, &pcn, opcookie); 1012 if (error) 1013 break; 1014 } 1015 1016 error = pops->puffs_node_symlink(pcc, 1017 opcookie, &auxt->pvnr_newnode, 1018 &pcn, &auxt->pvnr_va, auxt->pvnr_link); 1019 1020 if (buildpath) { 1021 if (error) { 1022 pu->pu_pathfree(pu, &pcn.pcn_po_full); 1023 } else { 1024 struct puffs_node *pn; 1025 1026 pn = PU_CMAP(pu, auxt->pvnr_newnode); 1027 pn->pn_po = pcn.pcn_po_full; 1028 } 1029 } 1030 1031 break; 1032 } 1033 1034 case PUFFS_VN_READDIR: 1035 { 1036 struct puffs_vnreq_readdir *auxt = auxbuf; 1037 struct dirent *dent; 1038 off_t *cookies; 1039 size_t res, origcookies; 1040 1041 if (pops->puffs_node_readdir == NULL) { 1042 error = 0; 1043 break; 1044 } 1045 1046 if (auxt->pvnr_ncookies) { 1047 /* LINTED: pvnr_data is __aligned() */ 1048 cookies = (off_t *)auxt->pvnr_data; 1049 origcookies = auxt->pvnr_ncookies; 1050 } else { 1051 cookies = NULL; 1052 origcookies = 0; 1053 } 1054 /* LINTED: dentoff is aligned in the kernel */ 1055 dent = (struct dirent *) 1056 (auxt->pvnr_data + auxt->pvnr_dentoff); 1057 1058 res = auxt->pvnr_resid; 1059 error = pops->puffs_node_readdir(pcc, 1060 opcookie, dent, &auxt->pvnr_offset, 1061 &auxt->pvnr_resid, &auxt->pvnr_cred, 1062 &auxt->pvnr_eofflag, cookies, &auxt->pvnr_ncookies); 1063 1064 /* much easier to track non-working NFS */ 1065 assert(auxt->pvnr_ncookies <= origcookies); 1066 1067 /* need to move a bit more */ 1068 preq->preq_buflen = sizeof(struct puffs_vnreq_readdir) 1069 + auxt->pvnr_dentoff + (res - auxt->pvnr_resid); 1070 break; 1071 } 1072 1073 case PUFFS_VN_READLINK: 1074 { 1075 struct puffs_vnreq_readlink *auxt = auxbuf; 1076 if (pops->puffs_node_readlink == NULL) { 1077 error = EOPNOTSUPP; 1078 break; 1079 } 1080 1081 error = pops->puffs_node_readlink(pcc, 1082 opcookie, &auxt->pvnr_cred, 1083 auxt->pvnr_link, &auxt->pvnr_linklen); 1084 break; 1085 } 1086 1087 case PUFFS_VN_RECLAIM: 1088 { 1089 struct puffs_vnreq_reclaim *auxt = auxbuf; 1090 if (pops->puffs_node_reclaim == NULL) { 1091 error = 0; 1092 break; 1093 } 1094 1095 error = pops->puffs_node_reclaim(pcc, 1096 opcookie, auxt->pvnr_pid); 1097 break; 1098 } 1099 1100 case PUFFS_VN_INACTIVE: 1101 { 1102 struct puffs_vnreq_inactive *auxt = auxbuf; 1103 if (pops->puffs_node_inactive == NULL) { 1104 error = EOPNOTSUPP; 1105 break; 1106 } 1107 1108 error = pops->puffs_node_inactive(pcc, 1109 opcookie, auxt->pvnr_pid, 1110 &auxt->pvnr_backendrefs); 1111 break; 1112 } 1113 1114 case PUFFS_VN_PATHCONF: 1115 { 1116 struct puffs_vnreq_pathconf *auxt = auxbuf; 1117 if (pops->puffs_node_pathconf == NULL) { 1118 error = 0; 1119 break; 1120 } 1121 1122 error = pops->puffs_node_pathconf(pcc, 1123 opcookie, auxt->pvnr_name, 1124 &auxt->pvnr_retval); 1125 break; 1126 } 1127 1128 case PUFFS_VN_ADVLOCK: 1129 { 1130 struct puffs_vnreq_advlock *auxt = auxbuf; 1131 if (pops->puffs_node_advlock == NULL) { 1132 error = 0; 1133 break; 1134 } 1135 1136 error = pops->puffs_node_advlock(pcc, 1137 opcookie, auxt->pvnr_id, auxt->pvnr_op, 1138 &auxt->pvnr_fl, auxt->pvnr_flags); 1139 break; 1140 } 1141 1142 case PUFFS_VN_PRINT: 1143 { 1144 if (pops->puffs_node_print == NULL) { 1145 error = 0; 1146 break; 1147 } 1148 1149 error = pops->puffs_node_print(pcc, 1150 opcookie); 1151 break; 1152 } 1153 1154 case PUFFS_VN_READ: 1155 { 1156 struct puffs_vnreq_read *auxt = auxbuf; 1157 size_t res; 1158 1159 if (pops->puffs_node_read == NULL) { 1160 error = EIO; 1161 break; 1162 } 1163 1164 res = auxt->pvnr_resid; 1165 error = pops->puffs_node_read(pcc, 1166 opcookie, auxt->pvnr_data, 1167 auxt->pvnr_offset, &auxt->pvnr_resid, 1168 &auxt->pvnr_cred, auxt->pvnr_ioflag); 1169 1170 /* need to move a bit more */ 1171 preq->preq_buflen = sizeof(struct puffs_vnreq_read) 1172 + (res - auxt->pvnr_resid); 1173 break; 1174 } 1175 1176 case PUFFS_VN_WRITE: 1177 { 1178 struct puffs_vnreq_write *auxt = auxbuf; 1179 1180 if (pops->puffs_node_write == NULL) { 1181 error = EIO; 1182 break; 1183 } 1184 1185 error = pops->puffs_node_write(pcc, 1186 opcookie, auxt->pvnr_data, 1187 auxt->pvnr_offset, &auxt->pvnr_resid, 1188 &auxt->pvnr_cred, auxt->pvnr_ioflag); 1189 1190 /* don't need to move data back to the kernel */ 1191 preq->preq_buflen = sizeof(struct puffs_vnreq_write); 1192 break; 1193 } 1194 1195 /* holy bitrot, ryydman! */ 1196 #if 0 1197 case PUFFS_VN_IOCTL: 1198 error = pops->puffs_node_ioctl1(pcc, opcookie, 1199 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1200 if (error != 0) 1201 break; 1202 pop.pso_reqid = preq->preq_id; 1203 1204 /* let the kernel do it's intermediate duty */ 1205 error = ioctl(pu->pu_kargs.pa_fd, PUFFSSIZEOP, &pop); 1206 /* 1207 * XXX: I don't actually know what the correct 1208 * thing to do in case of an error is, so I'll 1209 * just ignore it for the time being. 1210 */ 1211 error = pops->puffs_node_ioctl2(pcc, opcookie, 1212 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1213 break; 1214 1215 case PUFFS_VN_FCNTL: 1216 error = pops->puffs_node_fcntl1(pcc, opcookie, 1217 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1218 if (error != 0) 1219 break; 1220 pop.pso_reqid = preq->preq_id; 1221 1222 /* let the kernel do it's intermediate duty */ 1223 error = ioctl(pu->pu_kargs.pa_fd, PUFFSSIZEOP, &pop); 1224 /* 1225 * XXX: I don't actually know what the correct 1226 * thing to do in case of an error is, so I'll 1227 * just ignore it for the time being. 1228 */ 1229 error = pops->puffs_node_fcntl2(pcc, opcookie, 1230 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1231 break; 1232 #endif 1233 1234 default: 1235 printf("inval op %d\n", preq->preq_optype); 1236 error = EINVAL; 1237 break; 1238 } 1239 } else { 1240 /* 1241 * this one also 1242 */ 1243 error = EINVAL; 1244 } 1245 1246 preq->preq_rv = error; 1247 1248 pcc->pcc_rv = rv; 1249 pcc->pcc_flags |= PCC_DONE; 1250 } 1251 1252 1253 #if 0 1254 case PUFFS_VN_POLL: 1255 { 1256 struct puffs_vnreq_poll *auxt = auxbuf; 1257 if (pops->puffs_node_poll == NULL) { 1258 error = 0; 1259 break; 1260 } 1261 1262 error = pops->puffs_node_poll(pcc, 1263 opcookie, preq-); 1264 break; 1265 } 1266 1267 case PUFFS_VN_KQFILTER: 1268 { 1269 struct puffs_vnreq_kqfilter *auxt = auxbuf; 1270 if (pops->puffs_node_kqfilter == NULL) { 1271 error = 0; 1272 break; 1273 } 1274 1275 error = pops->puffs_node_kqfilter(pcc, 1276 opcookie, ); 1277 break; 1278 } 1279 1280 case PUFFS_VN_CLOSEEXTATTR: 1281 { 1282 struct puffs_vnreq_closeextattr *auxt = auxbuf; 1283 if (pops->puffs_closeextattr == NULL) { 1284 error = 0; 1285 break; 1286 } 1287 1288 error = pops->puffs_closeextattr(pcc, 1289 opcookie, ); 1290 break; 1291 } 1292 1293 case PUFFS_VN_GETEXTATTR: 1294 { 1295 struct puffs_vnreq_getextattr *auxt = auxbuf; 1296 if (pops->puffs_getextattr == NULL) { 1297 error = 0; 1298 break; 1299 } 1300 1301 error = pops->puffs_getextattr(pcc, 1302 opcookie, ); 1303 break; 1304 } 1305 1306 case PUFFS_VN_LISTEXTATTR: 1307 { 1308 struct puffs_vnreq_listextattr *auxt = auxbuf; 1309 if (pops->puffs_listextattr == NULL) { 1310 error = 0; 1311 break; 1312 } 1313 1314 error = pops->puffs_listextattr(pcc, 1315 opcookie, ); 1316 break; 1317 } 1318 1319 case PUFFS_VN_OPENEXTATTR: 1320 { 1321 struct puffs_vnreq_openextattr *auxt = auxbuf; 1322 if (pops->puffs_openextattr == NULL) { 1323 error = 0; 1324 break; 1325 } 1326 1327 error = pops->puffs_openextattr(pcc, 1328 opcookie, ); 1329 break; 1330 } 1331 1332 case PUFFS_VN_DELETEEXTATTR: 1333 { 1334 struct puffs_vnreq_deleteextattr *auxt = auxbuf; 1335 if (pops->puffs_deleteextattr == NULL) { 1336 error = 0; 1337 break; 1338 } 1339 1340 error = pops->puffs_deleteextattr(pcc, 1341 opcookie, ); 1342 break; 1343 } 1344 1345 case PUFFS_VN_SETEXTATTR: 1346 { 1347 struct puffs_vnreq_setextattr *auxt = auxbuf; 1348 if (pops->puffs_setextattr == NULL) { 1349 error = 0; 1350 break; 1351 } 1352 1353 error = pops->puffs_setextattr(pcc, 1354 opcookie, ); 1355 break; 1356 } 1357 1358 #endif 1359
Indexes created Sun Oct 26 21:10:03 GMT 2025