Changeset 00c2de63 in mainline for uspace/srv/fs/tmpfs/tmpfs_ops.c
- Timestamp:
- 2011-07-29T14:50:22Z (13 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- b6759f4
- Parents:
- 6c69d19 (diff), 7ae249d (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
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links above to see all the changes relative to each parent. - File:
-
- 1 edited
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uspace/srv/fs/tmpfs/tmpfs_ops.c
r6c69d19 r00c2de63 104 104 } 105 105 106 static char tmpfs_plb_get_char(unsigned pos)107 {108 return tmpfs_reg.plb_ro[pos % PLB_SIZE];109 }110 111 106 static bool tmpfs_is_directory(fs_node_t *fn) 112 107 { … … 139 134 .size_get = tmpfs_size_get, 140 135 .lnkcnt_get = tmpfs_lnkcnt_get, 141 .plb_get_char = tmpfs_plb_get_char,142 136 .is_directory = tmpfs_is_directory, 143 137 .is_file = tmpfs_is_file, … … 433 427 } 434 428 435 void tmpfs_mounted(ipc_callid_t rid, ipc_call_t *request) 436 { 437 devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request); 429 /* 430 * Implementation of the VFS_OUT interface. 431 */ 432 433 static int 434 tmpfs_mounted(devmap_handle_t devmap_handle, const char *opts, 435 fs_index_t *index, aoff64_t *size, unsigned *lnkcnt) 436 { 438 437 fs_node_t *rootfn; 439 438 int rc; 440 439 441 /* Accept the mount options. */442 char *opts;443 rc = async_data_write_accept((void **) &opts, true, 0, 0, 0, NULL);444 if (rc != EOK) {445 async_answer_0(rid, rc);446 return;447 }448 449 440 /* Check if this device is not already mounted. */ 450 441 rc = tmpfs_root_get(&rootfn, devmap_handle); 451 442 if ((rc == EOK) && (rootfn)) { 452 443 (void) tmpfs_node_put(rootfn); 453 free(opts); 454 async_answer_0(rid, EEXIST); 455 return; 444 return EEXIST; 456 445 } 457 446 458 447 /* Initialize TMPFS instance. */ 459 if (!tmpfs_instance_init(devmap_handle)) { 460 free(opts); 461 async_answer_0(rid, ENOMEM); 462 return; 463 } 448 if (!tmpfs_instance_init(devmap_handle)) 449 return ENOMEM; 464 450 465 451 rc = tmpfs_root_get(&rootfn, devmap_handle); … … 467 453 tmpfs_node_t *rootp = TMPFS_NODE(rootfn); 468 454 if (str_cmp(opts, "restore") == 0) { 469 if (tmpfs_restore(devmap_handle)) 470 async_answer_3(rid, EOK, rootp->index, rootp->size, 471 rootp->lnkcnt); 472 else 473 async_answer_0(rid, ELIMIT); 474 } else { 475 async_answer_3(rid, EOK, rootp->index, rootp->size, 476 rootp->lnkcnt); 477 } 478 free(opts); 479 } 480 481 void tmpfs_mount(ipc_callid_t rid, ipc_call_t *request) 482 { 483 libfs_mount(&tmpfs_libfs_ops, tmpfs_reg.fs_handle, rid, request); 484 } 485 486 void tmpfs_unmounted(ipc_callid_t rid, ipc_call_t *request) 487 { 488 devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request); 489 455 if (!tmpfs_restore(devmap_handle)) 456 return ELIMIT; 457 } 458 459 *index = rootp->index; 460 *size = rootp->size; 461 *lnkcnt = rootp->lnkcnt; 462 463 return EOK; 464 } 465 466 static int tmpfs_unmounted(devmap_handle_t devmap_handle) 467 { 490 468 tmpfs_instance_done(devmap_handle); 491 async_answer_0(rid, EOK); 492 } 493 494 void tmpfs_unmount(ipc_callid_t rid, ipc_call_t *request) 495 { 496 libfs_unmount(&tmpfs_libfs_ops, rid, request); 497 } 498 499 void tmpfs_lookup(ipc_callid_t rid, ipc_call_t *request) 500 { 501 libfs_lookup(&tmpfs_libfs_ops, tmpfs_reg.fs_handle, rid, request); 502 } 503 504 void tmpfs_read(ipc_callid_t rid, ipc_call_t *request) 505 { 506 devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request); 507 fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); 508 aoff64_t pos = 509 (aoff64_t) MERGE_LOUP32(IPC_GET_ARG3(*request), IPC_GET_ARG4(*request)); 510 469 return EOK; 470 } 471 472 static int tmpfs_read(devmap_handle_t devmap_handle, fs_index_t index, aoff64_t pos, 473 size_t *rbytes) 474 { 511 475 /* 512 476 * Lookup the respective TMPFS node. … … 518 482 }; 519 483 hlp = hash_table_find(&nodes, key); 520 if (!hlp) { 521 async_answer_0(rid, ENOENT); 522 return; 523 } 484 if (!hlp) 485 return ENOENT; 524 486 tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, 525 487 nh_link); … … 532 494 if (!async_data_read_receive(&callid, &size)) { 533 495 async_answer_0(callid, EINVAL); 534 async_answer_0(rid, EINVAL); 535 return; 496 return EINVAL; 536 497 } 537 498 … … 556 517 if (lnk == NULL) { 557 518 async_answer_0(callid, ENOENT); 558 async_answer_1(rid, ENOENT, 0); 559 return; 519 return ENOENT; 560 520 } 561 521 … … 567 527 } 568 528 569 /* 570 * Answer the VFS_READ call. 571 */ 572 async_answer_1(rid, EOK, bytes); 573 } 574 575 void tmpfs_write(ipc_callid_t rid, ipc_call_t *request) 576 { 577 devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request); 578 fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); 579 aoff64_t pos = 580 (aoff64_t) MERGE_LOUP32(IPC_GET_ARG3(*request), IPC_GET_ARG4(*request)); 581 529 *rbytes = bytes; 530 return EOK; 531 } 532 533 static int 534 tmpfs_write(devmap_handle_t devmap_handle, fs_index_t index, aoff64_t pos, 535 size_t *wbytes, aoff64_t *nsize) 536 { 582 537 /* 583 538 * Lookup the respective TMPFS node. … … 589 544 }; 590 545 hlp = hash_table_find(&nodes, key); 591 if (!hlp) { 592 async_answer_0(rid, ENOENT); 593 return; 594 } 546 if (!hlp) 547 return ENOENT; 595 548 tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, 596 549 nh_link); … … 603 556 if (!async_data_write_receive(&callid, &size)) { 604 557 async_answer_0(callid, EINVAL); 605 async_answer_0(rid, EINVAL); 606 return; 558 return EINVAL; 607 559 } 608 560 … … 612 564 if (pos + size <= nodep->size) { 613 565 /* The file size is not changing. */ 614 (void) async_data_write_finalize(callid, nodep->data + pos, size);615 async_answer_2(rid, EOK, size, nodep->size);616 return;566 (void) async_data_write_finalize(callid, nodep->data + pos, 567 size); 568 goto out; 617 569 } 618 570 size_t delta = (pos + size) - nodep->size; … … 627 579 if (!newdata) { 628 580 async_answer_0(callid, ENOMEM); 629 async_answer_2(rid, EOK, 0, nodep->size);630 return;581 size = 0; 582 goto out; 631 583 } 632 584 /* Clear any newly allocated memory in order to emulate gaps. */ … … 635 587 nodep->data = newdata; 636 588 (void) async_data_write_finalize(callid, nodep->data + pos, size); 637 async_answer_2(rid, EOK, size, nodep->size); 638 } 639 640 void tmpfs_truncate(ipc_callid_t rid, ipc_call_t *request) 641 { 642 devmap_handle_t devmap_handle = (devmap_handle_t) IPC_GET_ARG1(*request); 643 fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); 644 aoff64_t size = 645 (aoff64_t) MERGE_LOUP32(IPC_GET_ARG3(*request), IPC_GET_ARG4(*request)); 646 589 590 out: 591 *wbytes = size; 592 *nsize = nodep->size; 593 return EOK; 594 } 595 596 static int tmpfs_truncate(devmap_handle_t devmap_handle, fs_index_t index, 597 aoff64_t size) 598 { 647 599 /* 648 600 * Lookup the respective TMPFS node. … … 653 605 }; 654 606 link_t *hlp = hash_table_find(&nodes, key); 655 if (!hlp) { 656 async_answer_0(rid, ENOENT); 657 return; 658 } 659 tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, 660 nh_link); 661 662 if (size == nodep->size) { 663 async_answer_0(rid, EOK); 664 return; 665 } 666 667 if (size > SIZE_MAX) { 668 async_answer_0(rid, ENOMEM); 669 return; 670 } 607 if (!hlp) 608 return ENOENT; 609 tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, nh_link); 610 611 if (size == nodep->size) 612 return EOK; 613 614 if (size > SIZE_MAX) 615 return ENOMEM; 671 616 672 617 void *newdata = realloc(nodep->data, size); 673 if (!newdata) { 674 async_answer_0(rid, ENOMEM); 675 return; 676 } 618 if (!newdata) 619 return ENOMEM; 677 620 678 621 if (size > nodep->size) { … … 683 626 nodep->size = size; 684 627 nodep->data = newdata; 685 async_answer_0(rid, EOK); 686 } 687 688 void tmpfs_close(ipc_callid_t rid, ipc_call_t *request) 689 { 690 async_answer_0(rid, EOK); 691 } 692 693 void tmpfs_destroy(ipc_callid_t rid, ipc_call_t *request) 694 { 695 devmap_handle_t devmap_handle = (devmap_handle_t)IPC_GET_ARG1(*request); 696 fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request); 697 int rc; 698 628 return EOK; 629 } 630 631 static int tmpfs_close(devmap_handle_t devmap_handle, fs_index_t index) 632 { 633 return EOK; 634 } 635 636 static int tmpfs_destroy(devmap_handle_t devmap_handle, fs_index_t index) 637 { 699 638 link_t *hlp; 700 639 unsigned long key[] = { … … 703 642 }; 704 643 hlp = hash_table_find(&nodes, key); 705 if (!hlp) { 706 async_answer_0(rid, ENOENT); 707 return; 708 } 644 if (!hlp) 645 return ENOENT; 709 646 tmpfs_node_t *nodep = hash_table_get_instance(hlp, tmpfs_node_t, 710 647 nh_link); 711 rc = tmpfs_destroy_node(FS_NODE(nodep)); 712 async_answer_0(rid, rc); 713 } 714 715 void tmpfs_open_node(ipc_callid_t rid, ipc_call_t *request) 716 { 717 libfs_open_node(&tmpfs_libfs_ops, tmpfs_reg.fs_handle, rid, request); 718 } 719 720 void tmpfs_stat(ipc_callid_t rid, ipc_call_t *request) 721 { 722 libfs_stat(&tmpfs_libfs_ops, tmpfs_reg.fs_handle, rid, request); 723 } 724 725 void tmpfs_sync(ipc_callid_t rid, ipc_call_t *request) 648 return tmpfs_destroy_node(FS_NODE(nodep)); 649 } 650 651 static int tmpfs_sync(devmap_handle_t devmap_handle, fs_index_t index) 726 652 { 727 653 /* … … 729 655 * thus the sync operation is a no-op. 730 656 */ 731 async_answer_0(rid, EOK); 732 } 657 return EOK; 658 } 659 660 vfs_out_ops_t tmpfs_ops = { 661 .mounted = tmpfs_mounted, 662 .unmounted = tmpfs_unmounted, 663 .read = tmpfs_read, 664 .write = tmpfs_write, 665 .truncate = tmpfs_truncate, 666 .close = tmpfs_close, 667 .destroy = tmpfs_destroy, 668 .sync = tmpfs_sync, 669 }; 733 670 734 671 /** 735 672 * @} 736 673 */ 674
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