puffs.c revision 1.21
1 /* $NetBSD: puffs.c,v 1.21 2007/01/06 18:22:09 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 1.21 2007/01/06 18:22:09 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 static int do_buildpath(struct puffs_cn *, void *); 67 68 #define FILLOP(lower, upper) \ 69 do { \ 70 if (pops->puffs_node_##lower) \ 71 opmask[PUFFS_VN_##upper] = 1; \ 72 } while (/*CONSTCOND*/0) 73 static void 74 fillvnopmask(struct puffs_ops *pops, uint8_t *opmask) 75 { 76 77 memset(opmask, 0, PUFFS_VN_MAX); 78 79 FILLOP(create, CREATE); 80 FILLOP(mknod, MKNOD); 81 FILLOP(open, OPEN); 82 FILLOP(close, CLOSE); 83 FILLOP(access, ACCESS); 84 FILLOP(getattr, GETATTR); 85 FILLOP(setattr, SETATTR); 86 FILLOP(poll, POLL); /* XXX: not ready in kernel */ 87 FILLOP(revoke, REVOKE); 88 FILLOP(mmap, MMAP); 89 FILLOP(fsync, FSYNC); 90 FILLOP(seek, SEEK); 91 FILLOP(remove, REMOVE); 92 FILLOP(link, LINK); 93 FILLOP(rename, RENAME); 94 FILLOP(mkdir, MKDIR); 95 FILLOP(rmdir, RMDIR); 96 FILLOP(symlink, SYMLINK); 97 FILLOP(readdir, READDIR); 98 FILLOP(readlink, READLINK); 99 FILLOP(reclaim, RECLAIM); 100 FILLOP(inactive, INACTIVE); 101 FILLOP(print, PRINT); 102 FILLOP(read, READ); 103 FILLOP(write, WRITE); 104 105 /* XXX: not implemented in the kernel */ 106 FILLOP(getextattr, GETEXTATTR); 107 FILLOP(setextattr, SETEXTATTR); 108 FILLOP(listextattr, LISTEXTATTR); 109 } 110 #undef FILLOP 111 112 int 113 puffs_getselectable(struct puffs_usermount *pu) 114 { 115 116 return pu->pu_fd; 117 } 118 119 int 120 puffs_setblockingmode(struct puffs_usermount *pu, int mode) 121 { 122 int x; 123 124 x = mode; 125 return ioctl(pu->pu_fd, FIONBIO, &x); 126 } 127 128 int 129 puffs_getstate(struct puffs_usermount *pu) 130 { 131 132 return pu->pu_state; 133 } 134 135 void 136 puffs_setstacksize(struct puffs_usermount *pu, size_t ss) 137 { 138 139 pu->pu_cc_stacksize = ss; 140 } 141 142 /* 143 * in case the server wants to use some other scheme for paths, it 144 * can (*must*) call this in mount. 145 */ 146 int 147 puffs_setrootpath(struct puffs_usermount *pu, const char *rootpath) 148 { 149 struct puffs_node *pnr; 150 151 pnr = pu->pu_pn_root; 152 if (pnr == NULL) { 153 errno = ENOENT; 154 return -1; 155 } 156 157 free(pnr->pn_path); 158 pnr->pn_path = strdup(rootpath); 159 if (pnr->pn_path == NULL) 160 return -1; 161 pnr->pn_plen = strlen(pnr->pn_path) + 1; /* yes, count nul */ 162 163 return 0; 164 } 165 166 167 enum {PUFFCALL_ANSWER, PUFFCALL_IGNORE, PUFFCALL_AGAIN}; 168 169 struct puffs_usermount * 170 _puffs_mount(int develv, struct puffs_ops *pops, const char *dir, int mntflags, 171 const char *puffsname, void *priv, uint32_t pflags, size_t maxreqlen) 172 { 173 struct puffs_args pargs; 174 struct puffs_usermount *pu; 175 int fd = 0; 176 177 if (develv != PUFFS_DEVEL_LIBVERSION) { 178 warnx("puffs_mount: mounting with lib version %d, need %d", 179 develv, PUFFS_DEVEL_LIBVERSION); 180 errno = EINVAL; 181 return NULL; 182 } 183 184 fd = open("/dev/puffs", O_RDONLY); 185 if (fd == -1) 186 return NULL; 187 if (fd <= 2) 188 warnx("puffs_mount: device fd %d (<= 2), sure this is " 189 "what you want?", fd); 190 191 pargs.pa_vers = PUFFSDEVELVERS | PUFFSVERSION; 192 pargs.pa_flags = PUFFS_FLAG_KERN(pflags); 193 pargs.pa_fd = fd; 194 pargs.pa_maxreqlen = maxreqlen; 195 fillvnopmask(pops, pargs.pa_vnopmask); 196 (void)strlcpy(pargs.pa_name, puffsname, sizeof(pargs.pa_name)); 197 198 pu = malloc(sizeof(struct puffs_usermount)); 199 if (!pu) 200 return NULL; 201 202 pu->pu_flags = pflags; 203 pu->pu_ops = *pops; 204 free(pops); /* XXX */ 205 pu->pu_fd = fd; 206 pu->pu_privdata = priv; 207 pu->pu_cc_stacksize = PUFFS_CC_STACKSIZE_DEFAULT; 208 LIST_INIT(&pu->pu_pnodelst); 209 210 pu->pu_state = PUFFS_STATE_MOUNTING; 211 if (mount(MOUNT_PUFFS, dir, mntflags, &pargs) == -1) 212 goto failfree; 213 pu->pu_maxreqlen = pargs.pa_maxreqlen; 214 215 return pu; 216 217 failfree: 218 /* can't unmount() from here for obvious reasons */ 219 if (fd) 220 close(fd); 221 free(pu); 222 return NULL; 223 } 224 225 int 226 puffs_start(struct puffs_usermount *pu, void *rootcookie, struct statvfs *sbp) 227 { 228 struct puffs_startreq sreq; 229 230 memset(&sreq, 0, sizeof(struct puffs_startreq)); 231 sreq.psr_cookie = rootcookie; 232 sreq.psr_sb = *sbp; 233 234 /* tell kernel we're flying */ 235 if (ioctl(pu->pu_fd, PUFFSSTARTOP, &sreq) == -1) 236 return -1; 237 238 pu->pu_state = PUFFS_STATE_RUNNING; 239 240 return 0; 241 } 242 243 /* 244 * XXX: there's currently no clean way to request unmount from 245 * within the user server, so be very brutal about it. 246 */ 247 /*ARGSUSED*/ 248 int 249 puffs_exit(struct puffs_usermount *pu, int force) 250 { 251 252 force = 1; /* currently */ 253 254 if (pu->pu_fd) 255 close(pu->pu_fd); 256 257 /* XXX: should free all contents like pnodes */ 258 259 free(pu); 260 261 return 0; /* always succesful for now, WILL CHANGE */ 262 } 263 264 int 265 puffs_mainloop(struct puffs_usermount *pu, int flags) 266 { 267 struct puffs_getreq *pgr; 268 struct puffs_putreq *ppr; 269 int rv; 270 271 rv = -1; 272 pgr = puffs_makegetreq(pu, pu->pu_maxreqlen, 0); 273 if (pgr == NULL) 274 return -1; 275 276 ppr = puffs_makeputreq(pu); 277 if (ppr == NULL) { 278 puffs_destroygetreq(pgr); 279 return -1; 280 } 281 282 if ((flags & PUFFSLOOP_NODAEMON) == 0) 283 if (daemon(0, 0) == -1) 284 goto out; 285 286 /* XXX: should be a bit more robust with errors here */ 287 while (puffs_getstate(pu) == PUFFS_STATE_RUNNING 288 || puffs_getstate(pu) == PUFFS_STATE_UNMOUNTING) { 289 puffs_resetputreq(ppr); 290 291 if (puffs_handlereqs(pu, pgr, ppr, 0) == -1) { 292 rv = -1; 293 break; 294 } 295 if (puffs_putputreq(ppr) == -1) { 296 rv = -1; 297 break; 298 } 299 } 300 301 out: 302 puffs_destroyputreq(ppr); 303 puffs_destroygetreq(pgr); 304 return rv; 305 } 306 307 int 308 puffs_handlereqs(struct puffs_usermount *pu, struct puffs_getreq *pgr, 309 struct puffs_putreq *ppr, int maxops) 310 { 311 struct puffs_req *preq; 312 int pval; 313 314 puffs_setmaxgetreq(pgr, maxops); 315 if (puffs_loadgetreq(pgr) == -1) 316 return -1; 317 318 /* interlink pgr and ppr for diagnostic asserts */ 319 pgr->pgr_nppr++; 320 ppr->ppr_pgr = pgr; 321 322 pval = 0; 323 while ((preq = puffs_getreq(pgr)) != NULL 324 && pu->pu_state != PUFFS_STATE_UNMOUNTED) 325 pval = puffs_dopreq(pu, ppr, preq); 326 327 return pval; 328 } 329 330 int 331 puffs_dopreq(struct puffs_usermount *pu, struct puffs_putreq *ppr, 332 struct puffs_req *preq) 333 { 334 struct puffs_cc *pcc; 335 int rv; 336 337 if (pu->pu_flags & PUFFS_FLAG_OPDUMP) 338 puffsdump_req(preq); 339 340 pcc = puffs_cc_create(pu); 341 342 /* XXX: temporary kludging */ 343 pcc->pcc_preq = malloc(preq->preq_buflen); 344 if (pcc->pcc_preq == NULL) 345 return -1; 346 (void) memcpy(pcc->pcc_preq, preq, preq->preq_buflen); 347 348 rv = puffs_docc(ppr, pcc); 349 350 if ((pcc->pcc_flags & PCC_DONE) == 0) 351 return 0; 352 353 return rv; 354 } 355 356 int 357 puffs_docc(struct puffs_putreq *ppr, struct puffs_cc *pcc) 358 { 359 int rv; 360 361 assert((pcc->pcc_flags & PCC_DONE) == 0); 362 363 puffs_cc_continue(pcc); 364 rv = pcc->pcc_rv; 365 366 if ((pcc->pcc_flags & PCC_DONE) == 0) 367 rv = PUFFCALL_AGAIN; 368 369 /* check if we need to store this reply */ 370 switch (rv) { 371 case PUFFCALL_ANSWER: 372 puffs_putreq_cc(ppr, pcc); 373 break; 374 case PUFFCALL_IGNORE: 375 puffs_cc_destroy(pcc); 376 break; 377 case PUFFCALL_AGAIN: 378 break; 379 default: 380 assert(/*CONSTCOND*/0); 381 } 382 383 return 0; 384 } 385 386 /* library private, but linked from callcontext.c */ 387 388 void 389 puffs_calldispatcher(struct puffs_cc *pcc) 390 { 391 struct puffs_usermount *pu = pcc->pcc_pu; 392 struct puffs_ops *pops = &pu->pu_ops; 393 struct puffs_req *preq = pcc->pcc_preq; 394 void *auxbuf = preq; /* help with typecasting */ 395 int error, rv, buildpath; 396 397 assert(pcc->pcc_flags & (PCC_ONCE | PCC_REALCC)); 398 399 if (PUFFSOP_WANTREPLY(preq->preq_opclass)) 400 rv = PUFFCALL_ANSWER; 401 else 402 rv = PUFFCALL_IGNORE; 403 404 buildpath = pu->pu_flags & PUFFS_FLAG_BUILDPATH; 405 406 if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VFS) { 407 switch (preq->preq_optype) { 408 case PUFFS_VFS_UNMOUNT: 409 { 410 struct puffs_vfsreq_unmount *auxt = auxbuf; 411 412 pu->pu_state = PUFFS_STATE_UNMOUNTING; 413 error = pops->puffs_fs_unmount(pcc, 414 auxt->pvfsr_flags, auxt->pvfsr_pid); 415 if (!error) 416 pu->pu_state = PUFFS_STATE_UNMOUNTED; 417 else 418 pu->pu_state = PUFFS_STATE_RUNNING; 419 break; 420 } 421 case PUFFS_VFS_STATVFS: 422 { 423 struct puffs_vfsreq_statvfs *auxt = auxbuf; 424 425 error = pops->puffs_fs_statvfs(pcc, 426 &auxt->pvfsr_sb, auxt->pvfsr_pid); 427 break; 428 } 429 case PUFFS_VFS_SYNC: 430 { 431 struct puffs_vfsreq_sync *auxt = auxbuf; 432 433 error = pops->puffs_fs_sync(pcc, 434 auxt->pvfsr_waitfor, &auxt->pvfsr_cred, 435 auxt->pvfsr_pid); 436 break; 437 } 438 default: 439 /* 440 * I guess the kernel sees this one coming 441 */ 442 error = EINVAL; 443 break; 444 } 445 446 /* XXX: audit return values */ 447 /* XXX: sync with kernel */ 448 } else if (PUFFSOP_OPCLASS(preq->preq_opclass) == PUFFSOP_VN) { 449 switch (preq->preq_optype) { 450 case PUFFS_VN_LOOKUP: 451 { 452 struct puffs_vnreq_lookup *auxt = auxbuf; 453 struct puffs_cn pcn; 454 455 pcn.pcn_pkcnp = &auxt->pvnr_cn; 456 if (buildpath) { 457 if (pcn.pcn_flags & PUFFS_ISDOTDOT) { 458 buildpath = 0; 459 } else { 460 error = do_buildpath(&pcn, 461 preq->preq_cookie); 462 if (error) 463 break; 464 } 465 } 466 467 /* lookup *must* be present */ 468 error = pops->puffs_node_lookup(pcc, preq->preq_cookie, 469 &auxt->pvnr_newnode, &auxt->pvnr_vtype, 470 &auxt->pvnr_size, &auxt->pvnr_rdev, &pcn); 471 472 if (buildpath) { 473 if (error) { 474 free(pcn.pcn_fullpath); 475 } else { 476 struct puffs_node *pn; 477 478 /* 479 * did we get a new node or a 480 * recycled node? 481 * XXX: mapping assumption 482 */ 483 pn = auxt->pvnr_newnode; 484 if (pn->pn_path == NULL) { 485 pn->pn_path = pcn.pcn_fullpath; 486 pn->pn_plen 487 = pcn.pcn_fullplen; 488 } 489 } 490 } 491 492 break; 493 } 494 495 case PUFFS_VN_CREATE: 496 { 497 struct puffs_vnreq_create *auxt = auxbuf; 498 struct puffs_cn pcn; 499 if (pops->puffs_node_create == NULL) { 500 error = 0; 501 break; 502 } 503 504 pcn.pcn_pkcnp = &auxt->pvnr_cn; 505 if (buildpath) { 506 error = do_buildpath(&pcn, preq->preq_cookie); 507 if (error) 508 break; 509 } 510 511 error = pops->puffs_node_create(pcc, 512 preq->preq_cookie, &auxt->pvnr_newnode, 513 &pcn, &auxt->pvnr_va); 514 515 if (buildpath) { 516 if (error) { 517 free(pcn.pcn_fullpath); 518 } else { 519 struct puffs_node *pn; 520 521 pn = auxt->pvnr_newnode; 522 pn->pn_path = pcn.pcn_fullpath; 523 pn->pn_plen = pcn.pcn_fullplen; 524 } 525 } 526 527 break; 528 } 529 530 case PUFFS_VN_MKNOD: 531 { 532 struct puffs_vnreq_mknod *auxt = auxbuf; 533 struct puffs_cn pcn; 534 if (pops->puffs_node_mknod == NULL) { 535 error = 0; 536 break; 537 } 538 539 pcn.pcn_pkcnp = &auxt->pvnr_cn; 540 if (buildpath) { 541 error = do_buildpath(&pcn, preq->preq_cookie); 542 if (error) 543 break; 544 } 545 546 error = pops->puffs_node_mknod(pcc, 547 preq->preq_cookie, &auxt->pvnr_newnode, 548 &pcn, &auxt->pvnr_va); 549 550 if (buildpath) { 551 if (error) { 552 free(pcn.pcn_fullpath); 553 } else { 554 struct puffs_node *pn; 555 556 pn = auxt->pvnr_newnode; 557 pn->pn_path = pcn.pcn_fullpath; 558 pn->pn_plen = pcn.pcn_fullplen; 559 } 560 } 561 562 break; 563 } 564 565 case PUFFS_VN_OPEN: 566 { 567 struct puffs_vnreq_open *auxt = auxbuf; 568 if (pops->puffs_node_open == NULL) { 569 error = 0; 570 break; 571 } 572 573 error = pops->puffs_node_open(pcc, 574 preq->preq_cookie, auxt->pvnr_mode, 575 &auxt->pvnr_cred, auxt->pvnr_pid); 576 break; 577 } 578 579 case PUFFS_VN_CLOSE: 580 { 581 struct puffs_vnreq_close *auxt = auxbuf; 582 if (pops->puffs_node_close == NULL) { 583 error = 0; 584 break; 585 } 586 587 error = pops->puffs_node_close(pcc, 588 preq->preq_cookie, auxt->pvnr_fflag, 589 &auxt->pvnr_cred, auxt->pvnr_pid); 590 break; 591 } 592 593 case PUFFS_VN_ACCESS: 594 { 595 struct puffs_vnreq_access *auxt = auxbuf; 596 if (pops->puffs_node_access == NULL) { 597 error = 0; 598 break; 599 } 600 601 error = pops->puffs_node_access(pcc, 602 preq->preq_cookie, auxt->pvnr_mode, 603 &auxt->pvnr_cred, auxt->pvnr_pid); 604 break; 605 } 606 607 case PUFFS_VN_GETATTR: 608 { 609 struct puffs_vnreq_getattr *auxt = auxbuf; 610 if (pops->puffs_node_getattr == NULL) { 611 error = EOPNOTSUPP; 612 break; 613 } 614 615 error = pops->puffs_node_getattr(pcc, 616 preq->preq_cookie, &auxt->pvnr_va, 617 &auxt->pvnr_cred, auxt->pvnr_pid); 618 break; 619 } 620 621 case PUFFS_VN_SETATTR: 622 { 623 struct puffs_vnreq_setattr *auxt = auxbuf; 624 if (pops->puffs_node_setattr == NULL) { 625 error = EOPNOTSUPP; 626 break; 627 } 628 629 error = pops->puffs_node_setattr(pcc, 630 preq->preq_cookie, &auxt->pvnr_va, 631 &auxt->pvnr_cred, auxt->pvnr_pid); 632 break; 633 } 634 635 case PUFFS_VN_MMAP: 636 { 637 struct puffs_vnreq_mmap *auxt = auxbuf; 638 if (pops->puffs_node_mmap == NULL) { 639 error = 0; 640 break; 641 } 642 643 error = pops->puffs_node_mmap(pcc, 644 preq->preq_cookie, auxt->pvnr_fflags, 645 &auxt->pvnr_cred, auxt->pvnr_pid); 646 break; 647 } 648 649 case PUFFS_VN_REVOKE: 650 { 651 struct puffs_vnreq_revoke *auxt = auxbuf; 652 if (pops->puffs_node_revoke == NULL) { 653 error = 0; 654 break; 655 } 656 657 error = pops->puffs_node_revoke(pcc, 658 preq->preq_cookie, auxt->pvnr_flags); 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; 717 718 error = pops->puffs_node_link(pcc, 719 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 720 break; 721 } 722 723 case PUFFS_VN_RENAME: 724 { 725 struct puffs_vnreq_rename *auxt = auxbuf; 726 struct puffs_cn pcn_src, pcn_targ; 727 struct puffs_node *pn_src; 728 729 if (pops->puffs_node_rename == NULL) { 730 error = 0; 731 break; 732 } 733 734 pcn_src.pcn_pkcnp = &auxt->pvnr_cn_src; 735 pcn_targ.pcn_pkcnp = &auxt->pvnr_cn_targ; 736 if (buildpath) { 737 pn_src = auxt->pvnr_cookie_src; 738 pcn_src.pcn_fullpath = pn_src->pn_path; 739 pcn_src.pcn_fullplen = pn_src->pn_plen; 740 741 error = do_buildpath(&pcn_targ, 742 auxt->pvnr_cookie_targdir); 743 if (error) 744 break; 745 } 746 747 error = pops->puffs_node_rename(pcc, 748 preq->preq_cookie, auxt->pvnr_cookie_src, 749 &pcn_src, auxt->pvnr_cookie_targdir, 750 auxt->pvnr_cookie_targ, &pcn_targ); 751 752 if (buildpath) { 753 if (error) { 754 free(pcn_targ.pcn_fullpath); 755 } else { 756 free(pn_src->pn_path); 757 pn_src->pn_path = pcn_targ.pcn_fullpath; 758 pn_src->pn_plen = pcn_targ.pcn_fullplen; 759 } 760 } 761 break; 762 } 763 764 case PUFFS_VN_MKDIR: 765 { 766 struct puffs_vnreq_mkdir *auxt = auxbuf; 767 struct puffs_cn pcn; 768 if (pops->puffs_node_mkdir == NULL) { 769 error = 0; 770 break; 771 } 772 773 pcn.pcn_pkcnp = &auxt->pvnr_cn; 774 if (buildpath) { 775 error = do_buildpath(&pcn, preq->preq_cookie); 776 if (error) 777 break; 778 } 779 780 error = pops->puffs_node_mkdir(pcc, 781 preq->preq_cookie, &auxt->pvnr_newnode, 782 &pcn, &auxt->pvnr_va); 783 784 if (buildpath) { 785 if (error) { 786 free(pcn.pcn_fullpath); 787 } else { 788 struct puffs_node *pn; 789 790 pn = auxt->pvnr_newnode; 791 pn->pn_path = pcn.pcn_fullpath; 792 pn->pn_plen = pcn.pcn_fullplen; 793 } 794 } 795 796 break; 797 } 798 799 case PUFFS_VN_RMDIR: 800 { 801 struct puffs_vnreq_rmdir *auxt = auxbuf; 802 struct puffs_cn pcn; 803 if (pops->puffs_node_rmdir == NULL) { 804 error = 0; 805 break; 806 } 807 808 pcn.pcn_pkcnp = &auxt->pvnr_cn; 809 810 error = pops->puffs_node_rmdir(pcc, 811 preq->preq_cookie, auxt->pvnr_cookie_targ, &pcn); 812 break; 813 } 814 815 case PUFFS_VN_SYMLINK: 816 { 817 struct puffs_vnreq_symlink *auxt = auxbuf; 818 struct puffs_cn pcn; 819 if (pops->puffs_node_symlink == NULL) { 820 error = 0; 821 break; 822 } 823 824 pcn.pcn_pkcnp = &auxt->pvnr_cn; 825 if (buildpath) { 826 error = do_buildpath(&pcn, preq->preq_cookie); 827 if (error) 828 break; 829 } 830 831 error = pops->puffs_node_symlink(pcc, 832 preq->preq_cookie, &auxt->pvnr_newnode, 833 &pcn, &auxt->pvnr_va, auxt->pvnr_link); 834 835 if (buildpath) { 836 if (error) { 837 free(pcn.pcn_fullpath); 838 } else { 839 struct puffs_node *pn; 840 841 pn = auxt->pvnr_newnode; 842 pn->pn_path = pcn.pcn_fullpath; 843 pn->pn_plen = pcn.pcn_fullplen; 844 } 845 } 846 847 break; 848 } 849 850 case PUFFS_VN_READDIR: 851 { 852 struct puffs_vnreq_readdir *auxt = auxbuf; 853 size_t res; 854 855 if (pops->puffs_node_readdir == NULL) { 856 error = 0; 857 break; 858 } 859 860 res = auxt->pvnr_resid; 861 error = pops->puffs_node_readdir(pcc, 862 preq->preq_cookie, auxt->pvnr_dent, 863 &auxt->pvnr_cred, &auxt->pvnr_offset, 864 &auxt->pvnr_resid); 865 866 /* need to move a bit more */ 867 preq->preq_buflen = sizeof(struct puffs_vnreq_readdir) 868 + (res - auxt->pvnr_resid); 869 break; 870 } 871 872 case PUFFS_VN_READLINK: 873 { 874 struct puffs_vnreq_readlink *auxt = auxbuf; 875 if (pops->puffs_node_readlink == NULL) { 876 error = EOPNOTSUPP; 877 break; 878 } 879 880 error = pops->puffs_node_readlink(pcc, 881 preq->preq_cookie, &auxt->pvnr_cred, 882 auxt->pvnr_link, &auxt->pvnr_linklen); 883 break; 884 } 885 886 case PUFFS_VN_RECLAIM: 887 { 888 struct puffs_vnreq_reclaim *auxt = auxbuf; 889 if (pops->puffs_node_reclaim == NULL) { 890 error = 0; 891 break; 892 } 893 894 error = pops->puffs_node_reclaim(pcc, 895 preq->preq_cookie, auxt->pvnr_pid); 896 break; 897 } 898 899 case PUFFS_VN_INACTIVE: 900 { 901 struct puffs_vnreq_inactive *auxt = auxbuf; 902 if (pops->puffs_node_inactive == NULL) { 903 error = EOPNOTSUPP; 904 break; 905 } 906 907 error = pops->puffs_node_inactive(pcc, 908 preq->preq_cookie, auxt->pvnr_pid, 909 &auxt->pvnr_backendrefs); 910 break; 911 } 912 913 case PUFFS_VN_PATHCONF: 914 { 915 struct puffs_vnreq_pathconf *auxt = auxbuf; 916 if (pops->puffs_node_pathconf == NULL) { 917 error = 0; 918 break; 919 } 920 921 error = pops->puffs_node_pathconf(pcc, 922 preq->preq_cookie, auxt->pvnr_name, 923 &auxt->pvnr_retval); 924 break; 925 } 926 927 case PUFFS_VN_ADVLOCK: 928 { 929 struct puffs_vnreq_advlock *auxt = auxbuf; 930 if (pops->puffs_node_advlock == NULL) { 931 error = 0; 932 break; 933 } 934 935 error = pops->puffs_node_advlock(pcc, 936 preq->preq_cookie, auxt->pvnr_id, auxt->pvnr_op, 937 &auxt->pvnr_fl, auxt->pvnr_flags); 938 break; 939 } 940 941 case PUFFS_VN_PRINT: 942 { 943 if (pops->puffs_node_print == NULL) { 944 error = 0; 945 break; 946 } 947 948 error = pops->puffs_node_print(pcc, 949 preq->preq_cookie); 950 break; 951 } 952 953 case PUFFS_VN_READ: 954 { 955 struct puffs_vnreq_read *auxt = auxbuf; 956 size_t res; 957 958 if (pops->puffs_node_read == NULL) { 959 error = EIO; 960 break; 961 } 962 963 res = auxt->pvnr_resid; 964 error = pops->puffs_node_read(pcc, 965 preq->preq_cookie, auxt->pvnr_data, 966 auxt->pvnr_offset, &auxt->pvnr_resid, 967 &auxt->pvnr_cred, auxt->pvnr_ioflag); 968 969 /* need to move a bit more */ 970 preq->preq_buflen = sizeof(struct puffs_vnreq_read) 971 + (res - auxt->pvnr_resid); 972 break; 973 } 974 975 case PUFFS_VN_WRITE: 976 { 977 struct puffs_vnreq_write *auxt = auxbuf; 978 979 if (pops->puffs_node_write == NULL) { 980 error = EIO; 981 break; 982 } 983 984 error = pops->puffs_node_write(pcc, 985 preq->preq_cookie, auxt->pvnr_data, 986 auxt->pvnr_offset, &auxt->pvnr_resid, 987 &auxt->pvnr_cred, auxt->pvnr_ioflag); 988 989 /* don't need to move data back to the kernel */ 990 preq->preq_buflen = sizeof(struct puffs_vnreq_write); 991 break; 992 } 993 994 /* holy bitrot, ryydman! */ 995 #if 0 996 case PUFFS_VN_IOCTL: 997 error = pops->puffs_node_ioctl1(pcc, preq->preq_cookie, 998 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 999 if (error != 0) 1000 break; 1001 pop.pso_reqid = preq->preq_id; 1002 1003 /* let the kernel do it's intermediate duty */ 1004 error = ioctl(pu->pu_fd, PUFFSSIZEOP, &pop); 1005 /* 1006 * XXX: I don't actually know what the correct 1007 * thing to do in case of an error is, so I'll 1008 * just ignore it for the time being. 1009 */ 1010 error = pops->puffs_node_ioctl2(pcc, preq->preq_cookie, 1011 (struct puffs_vnreq_ioctl *)auxbuf, &pop); 1012 break; 1013 1014 case PUFFS_VN_FCNTL: 1015 error = pops->puffs_node_fcntl1(pcc, preq->preq_cookie, 1016 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1017 if (error != 0) 1018 break; 1019 pop.pso_reqid = preq->preq_id; 1020 1021 /* let the kernel do it's intermediate duty */ 1022 error = ioctl(pu->pu_fd, PUFFSSIZEOP, &pop); 1023 /* 1024 * XXX: I don't actually know what the correct 1025 * thing to do in case of an error is, so I'll 1026 * just ignore it for the time being. 1027 */ 1028 error = pops->puffs_node_fcntl2(pcc, preq->preq_cookie, 1029 (struct puffs_vnreq_fcntl *)auxbuf, &pop); 1030 break; 1031 #endif 1032 1033 default: 1034 printf("inval op %d\n", preq->preq_optype); 1035 error = EINVAL; 1036 break; 1037 } 1038 } else { 1039 /* 1040 * this one also 1041 */ 1042 error = EINVAL; 1043 } 1044 1045 preq->preq_rv = error; 1046 1047 pcc->pcc_rv = rv; 1048 pcc->pcc_flags |= PCC_DONE; 1049 } 1050 1051 static int 1052 do_buildpath(struct puffs_cn *pcn, void *parent) 1053 { 1054 struct puffs_node *pn_parent; 1055 size_t plen; 1056 1057 pn_parent = parent; /* XXX */ 1058 assert(pn_parent->pn_path != NULL); 1059 1060 /* +1 not for nul but for / */ 1061 plen = pn_parent->pn_plen + pcn->pcn_namelen + 1; 1062 pcn->pcn_fullpath = malloc(plen); 1063 if (!pcn->pcn_fullpath) 1064 return errno; 1065 1066 strcpy(pcn->pcn_fullpath, pn_parent->pn_path); 1067 strcat(pcn->pcn_fullpath, "/"); 1068 strcat(pcn->pcn_fullpath, pcn->pcn_name); 1069 pcn->pcn_fullpath[plen-1] = '\0'; /* paranoia */ 1070 pcn->pcn_fullplen = plen; 1071 1072 return 0; 1073 } 1074 1075 1076 #if 0 1077 case PUFFS_VN_POLL: 1078 { 1079 struct puffs_vnreq_poll *auxt = auxbuf; 1080 if (pops->puffs_node_poll == NULL) { 1081 error = 0; 1082 break; 1083 } 1084 1085 error = pops->puffs_node_poll(pcc, 1086 preq->preq_cookie, preq-); 1087 break; 1088 } 1089 1090 case PUFFS_VN_KQFILTER: 1091 { 1092 struct puffs_vnreq_kqfilter *auxt = auxbuf; 1093 if (pops->puffs_node_kqfilter == NULL) { 1094 error = 0; 1095 break; 1096 } 1097 1098 error = pops->puffs_node_kqfilter(pcc, 1099 preq->preq_cookie, ); 1100 break; 1101 } 1102 1103 case PUFFS_VN_CLOSEEXTATTR: 1104 { 1105 struct puffs_vnreq_closeextattr *auxt = auxbuf; 1106 if (pops->puffs_closeextattr == NULL) { 1107 error = 0; 1108 break; 1109 } 1110 1111 error = pops->puffs_closeextattr(pcc, 1112 preq->preq_cookie, ); 1113 break; 1114 } 1115 1116 case PUFFS_VN_GETEXTATTR: 1117 { 1118 struct puffs_vnreq_getextattr *auxt = auxbuf; 1119 if (pops->puffs_getextattr == NULL) { 1120 error = 0; 1121 break; 1122 } 1123 1124 error = pops->puffs_getextattr(pcc, 1125 preq->preq_cookie, ); 1126 break; 1127 } 1128 1129 case PUFFS_VN_LISTEXTATTR: 1130 { 1131 struct puffs_vnreq_listextattr *auxt = auxbuf; 1132 if (pops->puffs_listextattr == NULL) { 1133 error = 0; 1134 break; 1135 } 1136 1137 error = pops->puffs_listextattr(pcc, 1138 preq->preq_cookie, ); 1139 break; 1140 } 1141 1142 case PUFFS_VN_OPENEXTATTR: 1143 { 1144 struct puffs_vnreq_openextattr *auxt = auxbuf; 1145 if (pops->puffs_openextattr == NULL) { 1146 error = 0; 1147 break; 1148 } 1149 1150 error = pops->puffs_openextattr(pcc, 1151 preq->preq_cookie, ); 1152 break; 1153 } 1154 1155 case PUFFS_VN_DELETEEXTATTR: 1156 { 1157 struct puffs_vnreq_deleteextattr *auxt = auxbuf; 1158 if (pops->puffs_deleteextattr == NULL) { 1159 error = 0; 1160 break; 1161 } 1162 1163 error = pops->puffs_deleteextattr(pcc, 1164 preq->preq_cookie, ); 1165 break; 1166 } 1167 1168 case PUFFS_VN_SETEXTATTR: 1169 { 1170 struct puffs_vnreq_setextattr *auxt = auxbuf; 1171 if (pops->puffs_setextattr == NULL) { 1172 error = 0; 1173 break; 1174 } 1175 1176 error = pops->puffs_setextattr(pcc, 1177 preq->preq_cookie, ); 1178 break; 1179 } 1180 1181 #endif 1182
Indexes created Mon Sep 22 13:09:51 GMT 2025