1/* 2 * Copyright 2007-2016, Axel D��rfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 */ 5 6 7#include <dirent.h> 8#include <errno.h> 9#include <stdio.h> 10#include <stdlib.h> 11#include <string.h> 12#include <sys/stat.h> 13 14#include <FindDirectory.h> 15#include <fs_info.h> 16#include <fs_interface.h> 17#include <KernelExport.h> 18#include <lock.h> 19#include <Mime.h> 20#include <NodeMonitor.h> 21#include <TypeConstants.h> 22 23#include <AutoDeleter.h> 24#include <util/AutoLock.h> 25#include <util/SinglyLinkedList.h> 26#include <util/DoublyLinkedList.h> 27 28#include "cdda.h" 29#include "cddb.h" 30 31 32//#define TRACE_CDDA 33#ifdef TRACE_CDDA 34# define TRACE(x) dprintf x 35#else 36# define TRACE(x) 37#endif 38 39 40class Attribute; 41class Inode; 42struct attr_cookie; 43struct dir_cookie; 44 45typedef DoublyLinkedList<Attribute> AttributeList; 46typedef SinglyLinkedList<attr_cookie> AttrCookieList; 47 48struct riff_header { 49 uint32 magic; 50 uint32 length; 51 uint32 id; 52} _PACKED; 53 54struct riff_chunk { 55 uint32 fourcc; 56 uint32 length; 57} _PACEKD; 58 59struct wav_format_chunk : riff_chunk { 60 uint16 format_tag; 61 uint16 channels; 62 uint32 samples_per_second; 63 uint32 average_bytes_per_second; 64 uint16 block_align; 65 uint16 bits_per_sample; 66} _PACKED; 67 68struct wav_header { 69 riff_header header; 70 wav_format_chunk format; 71 riff_chunk data; 72} _PACKED; 73 74enum attr_mode { 75 kDiscIDAttributes, 76 kSharedAttributes, 77 kDeviceAttributes 78}; 79 80class Volume { 81public: 82 Volume(fs_volume* fsVolume); 83 ~Volume(); 84 85 status_t InitCheck(); 86 87 fs_volume* FSVolume() const { return fFSVolume; } 88 dev_t ID() const { return fFSVolume->id; } 89 uint32 DiscID() const { return fDiscID; } 90 Inode& RootNode() const { return *fRootNode; } 91 92 status_t Mount(const char* device); 93 int Device() const { return fDevice; } 94 ino_t GetNextNodeID() { return fNextID++; } 95 96 const char* Name() const { return fName; } 97 status_t SetName(const char* name); 98 99 mutex& Lock(); 100 101 Inode* Find(ino_t id); 102 Inode* Find(const char* name); 103 104 Inode* FirstEntry() const { return fFirstEntry; } 105 106 off_t NumBlocks() const { return fNumBlocks; } 107 size_t BufferSize() const { return 32 * kFrameSize; } 108 // TODO: for now 109 110 void SetCDDBLookupsEnabled(bool doLookup); 111 112 static void DetermineName(uint32 cddbId, int device, char* name, 113 size_t length); 114 115private: 116 Inode* _CreateNode(Inode* parent, const char* name, 117 uint64 start, uint64 frames, int32 type); 118 int _OpenAttributes(int mode, 119 enum attr_mode attrMode = kDiscIDAttributes); 120 void _RestoreAttributes(); 121 void _RestoreAttributes(int fd); 122 void _StoreAttributes(); 123 void _RestoreSharedAttributes(); 124 void _StoreSharedAttributes(); 125 126 mutex fLock; 127 fs_volume* fFSVolume; 128 int fDevice; 129 uint32 fDiscID; 130 Inode* fRootNode; 131 ino_t fNextID; 132 char* fName; 133 off_t fNumBlocks; 134 bool fIgnoreCDDBLookupChanges; 135 136 // root directory contents - we don't support other directories 137 Inode* fFirstEntry; 138}; 139 140class Attribute : public DoublyLinkedListLinkImpl<Attribute> { 141public: 142 Attribute(const char* name, type_code type); 143 ~Attribute(); 144 145 status_t InitCheck() const 146 { return fName != NULL ? B_OK : B_NO_MEMORY; } 147 status_t SetTo(const char* name, type_code type); 148 void SetType(type_code type) 149 { fType = type; } 150 151 status_t ReadAt(off_t offset, uint8* buffer, 152 size_t* _length); 153 status_t WriteAt(off_t offset, const uint8* buffer, 154 size_t* _length); 155 void Truncate(); 156 status_t SetSize(off_t size); 157 158 const char* Name() const { return fName; } 159 off_t Size() const { return fSize; } 160 type_code Type() const { return fType; } 161 uint8* Data() const { return fData; } 162 163 bool IsProtectedNamespace(); 164 static bool IsProtectedNamespace(const char* name); 165 166private: 167 char* fName; 168 type_code fType; 169 uint8* fData; 170 off_t fSize; 171}; 172 173class Inode { 174public: 175 Inode(Volume* volume, Inode* parent, 176 const char* name, uint64 start, uint64 frames, 177 int32 type); 178 ~Inode(); 179 180 status_t InitCheck(); 181 ino_t ID() const { return fID; } 182 183 const char* Name() const { return fName; } 184 status_t SetName(const char* name); 185 186 int32 Type() const 187 { return fType; } 188 gid_t GroupID() const 189 { return fGroupID; } 190 uid_t UserID() const 191 { return fUserID; } 192 time_t CreationTime() const 193 { return fCreationTime; } 194 time_t ModificationTime() const 195 { return fModificationTime; } 196 uint64 StartFrame() const 197 { return fStartFrame; } 198 uint64 FrameCount() const 199 { return fFrameCount; } 200 uint64 Size() const 201 { return fFrameCount * kFrameSize; } 202 // does not include the WAV header 203 204 Attribute* FindAttribute(const char* name) const; 205 status_t AddAttribute(Attribute* attribute, bool overwrite); 206 status_t AddAttribute(const char* name, type_code type, 207 bool overwrite, const uint8* data, 208 size_t length); 209 status_t AddAttribute(const char* name, type_code type, 210 const char* string); 211 status_t AddAttribute(const char* name, type_code type, 212 uint32 value); 213 status_t AddAttribute(const char* name, type_code type, 214 uint64 value); 215 status_t RemoveAttribute(const char* name, 216 bool checkNamespace = false); 217 218 void AddAttrCookie(attr_cookie* cookie); 219 void RemoveAttrCookie(attr_cookie* cookie); 220 void RewindAttrCookie(attr_cookie* cookie); 221 222 AttributeList::ConstIterator Attributes() const 223 { return fAttributes.GetIterator(); } 224 225 const wav_header* WAVHeader() const 226 { return &fWAVHeader; } 227 228 Inode* Next() const { return fNext; } 229 void SetNext(Inode *inode) { fNext = inode; } 230 231private: 232 Inode* fNext; 233 ino_t fID; 234 int32 fType; 235 char* fName; 236 gid_t fGroupID; 237 uid_t fUserID; 238 time_t fCreationTime; 239 time_t fModificationTime; 240 uint64 fStartFrame; 241 uint64 fFrameCount; 242 AttributeList fAttributes; 243 AttrCookieList fAttrCookies; 244 wav_header fWAVHeader; 245}; 246 247struct dir_cookie { 248 Inode* current; 249 int state; // iteration state 250}; 251 252// directory iteration states 253enum { 254 ITERATION_STATE_DOT = 0, 255 ITERATION_STATE_DOT_DOT = 1, 256 ITERATION_STATE_OTHERS = 2, 257 ITERATION_STATE_BEGIN = ITERATION_STATE_DOT, 258}; 259 260struct attr_cookie : SinglyLinkedListLinkImpl<attr_cookie> { 261 Attribute* current; 262}; 263 264struct file_cookie { 265 int open_mode; 266 off_t buffer_offset; 267 void* buffer; 268}; 269 270static const uint32 kMaxAttributeSize = 65536; 271static const uint32 kMaxAttributes = 64; 272 273static const char* kProtectedAttrNamespace = "CD:"; 274 275static const char* kCddbIdAttribute = "CD:cddbid"; 276static const char* kDoLookupAttribute = "CD:do_lookup"; 277static const char* kTocAttribute = "CD:toc"; 278 279extern fs_volume_ops gCDDAVolumeOps; 280extern fs_vnode_ops gCDDAVnodeOps; 281 282 283// #pragma mark helper functions 284 285 286/*! Determines if the attribute is shared among all devices or among 287 all CDs in a specific device. 288 We use this to share certain Tracker attributes. 289*/ 290static bool 291is_special_attribute(const char* name, attr_mode attrMode) 292{ 293 if (attrMode == kDeviceAttributes) { 294 static const char* kAttributes[] = { 295 "_trk/windframe", 296 "_trk/pinfo", 297 "_trk/pinfo_le", 298 NULL, 299 }; 300 301 for (int32 i = 0; kAttributes[i]; i++) { 302 if (!strcmp(name, kAttributes[i])) 303 return true; 304 } 305 } else if (attrMode == kSharedAttributes) { 306 static const char* kAttributes[] = { 307 "_trk/columns", 308 "_trk/columns_le", 309 "_trk/viewstate", 310 "_trk/viewstate_le", 311 NULL, 312 }; 313 314 for (int32 i = 0; kAttributes[i]; i++) { 315 if (!strcmp(name, kAttributes[i])) 316 return true; 317 } 318 } 319 320 return false; 321} 322 323 324static void 325write_line(int fd, const char* line) 326{ 327 if (line == NULL) 328 line = ""; 329 330 size_t length = strlen(line); 331 write(fd, line, length); 332 write(fd, "\n", 1); 333} 334 335 336static void 337write_attributes(int fd, Inode* inode, attr_mode attrMode = kDiscIDAttributes) 338{ 339 // count attributes 340 341 AttributeList::ConstIterator iterator = inode->Attributes(); 342 uint32 count = 0; 343 while (iterator.HasNext()) { 344 Attribute* attribute = iterator.Next(); 345 if ((attrMode == kDiscIDAttributes 346 || is_special_attribute(attribute->Name(), attrMode)) 347 && !attribute->IsProtectedNamespace()) 348 count++; 349 } 350 351 // we're artificially limiting the attribute count per inode 352 if (count > kMaxAttributes) 353 count = kMaxAttributes; 354 355 count = B_HOST_TO_BENDIAN_INT32(count); 356 write(fd, &count, sizeof(uint32)); 357 358 // write attributes 359 360 iterator.Rewind(); 361 362 while (iterator.HasNext()) { 363 Attribute* attribute = iterator.Next(); 364 if ((attrMode != kDiscIDAttributes 365 && !is_special_attribute(attribute->Name(), attrMode)) 366 || attribute->IsProtectedNamespace()) 367 continue; 368 369 uint32 type = B_HOST_TO_BENDIAN_INT32(attribute->Type()); 370 write(fd, &type, sizeof(uint32)); 371 372 uint8 length = strlen(attribute->Name()); 373 write(fd, &length, 1); 374 write(fd, attribute->Name(), length); 375 376 uint32 size = B_HOST_TO_BENDIAN_INT32(attribute->Size()); 377 write(fd, &size, sizeof(uint32)); 378 if (size != 0) 379 write(fd, attribute->Data(), attribute->Size()); 380 381 if (--count == 0) 382 break; 383 } 384} 385 386 387static bool 388read_line(int fd, char* line, size_t length) 389{ 390 bool first = true; 391 size_t pos = 0; 392 char c; 393 394 while (read(fd, &c, 1) == 1) { 395 first = false; 396 397 if (c == '\n') 398 break; 399 if (pos < length) 400 line[pos] = c; 401 402 pos++; 403 } 404 405 if (pos >= length - 1) 406 pos = length - 1; 407 line[pos] = '\0'; 408 409 return !first; 410} 411 412 413static bool 414read_attributes(int fd, Inode* inode) 415{ 416 uint32 count; 417 if (read(fd, &count, sizeof(uint32)) != (ssize_t)sizeof(uint32)) 418 return false; 419 420 count = B_BENDIAN_TO_HOST_INT32(count); 421 if (count > kMaxAttributes) 422 return false; 423 424 for (uint32 i = 0; i < count; i++) { 425 char name[B_ATTR_NAME_LENGTH + 1]; 426 uint32 type, size; 427 uint8 length; 428 if (read(fd, &type, sizeof(uint32)) != (ssize_t)sizeof(uint32) 429 || read(fd, &length, 1) != 1 430 || read(fd, name, length) != length 431 || read(fd, &size, sizeof(uint32)) != (ssize_t)sizeof(uint32)) 432 return false; 433 434 type = B_BENDIAN_TO_HOST_INT32(type); 435 size = B_BENDIAN_TO_HOST_INT32(size); 436 name[length] = '\0'; 437 438 Attribute* attribute = new(std::nothrow) Attribute(name, type); 439 if (attribute == NULL) 440 return false; 441 442 if (attribute->IsProtectedNamespace()) { 443 // Attributes in the protected namespace are handled internally 444 // so we do not load them even if they are present in the 445 // attributes file. 446 delete attribute; 447 continue; 448 } 449 if (attribute->SetSize(size) != B_OK 450 || inode->AddAttribute(attribute, true) != B_OK) { 451 delete attribute; 452 } else 453 read(fd, attribute->Data(), size); 454 } 455 456 return true; 457} 458 459 460static int 461open_attributes(uint32 cddbID, int deviceFD, int mode, 462 enum attr_mode attrMode) 463{ 464 char* path = (char*)malloc(B_PATH_NAME_LENGTH); 465 if (path == NULL) 466 return -1; 467 468 MemoryDeleter deleter(path); 469 bool create = (mode & O_WRONLY) != 0; 470 471 if (find_directory(B_USER_SETTINGS_DIRECTORY, -1, create, path, 472 B_PATH_NAME_LENGTH) != B_OK) { 473 return -1; 474 } 475 476 strlcat(path, "/cdda", B_PATH_NAME_LENGTH); 477 if (create) 478 mkdir(path, 0755); 479 480 if (attrMode == kDiscIDAttributes) { 481 char id[64]; 482 snprintf(id, sizeof(id), "/%08" B_PRIx32, cddbID); 483 strlcat(path, id, B_PATH_NAME_LENGTH); 484 } else if (attrMode == kDeviceAttributes) { 485 uint32 length = strlen(path); 486 char* deviceName = path + length; 487 if (ioctl(deviceFD, B_GET_PATH_FOR_DEVICE, deviceName, 488 B_PATH_NAME_LENGTH - length) < B_OK) { 489 return B_ERROR; 490 } 491 492 deviceName++; 493 494 // replace slashes in the device path 495 while (deviceName[0]) { 496 if (deviceName[0] == '/') 497 deviceName[0] = '_'; 498 499 deviceName++; 500 } 501 } else 502 strlcat(path, "/shared", B_PATH_NAME_LENGTH); 503 504 return open(path, mode | (create ? O_CREAT | O_TRUNC : 0), 0644); 505} 506 507 508static void 509fill_stat_buffer(Volume* volume, Inode* inode, Attribute* attribute, 510 struct stat& stat) 511{ 512 stat.st_dev = volume->FSVolume()->id; 513 stat.st_ino = inode->ID(); 514 515 if (attribute != NULL) { 516 stat.st_size = attribute->Size(); 517 stat.st_blocks = 0; 518 stat.st_mode = S_ATTR | 0666; 519 stat.st_type = attribute->Type(); 520 } else { 521 stat.st_size = inode->Size() + sizeof(wav_header); 522 stat.st_blocks = inode->Size() / 512; 523 stat.st_mode = inode->Type(); 524 stat.st_type = 0; 525 } 526 527 stat.st_nlink = 1; 528 stat.st_blksize = 2048; 529 530 stat.st_uid = inode->UserID(); 531 stat.st_gid = inode->GroupID(); 532 533 stat.st_atim.tv_sec = time(NULL); 534 stat.st_atim.tv_nsec = 0; 535 stat.st_mtim.tv_sec = stat.st_ctim.tv_sec = inode->ModificationTime(); 536 stat.st_ctim.tv_nsec = stat.st_mtim.tv_nsec = 0; 537 stat.st_crtim.tv_sec = inode->CreationTime(); 538 stat.st_crtim.tv_nsec = 0; 539} 540 541 542bool 543is_data_track(const scsi_toc_track& track) 544{ 545 return (track.control & 4) != 0; 546} 547 548 549uint32 550count_audio_tracks(scsi_toc_toc* toc) 551{ 552 uint32 trackCount = toc->last_track + 1 - toc->first_track; 553 uint32 count = 0; 554 for (uint32 i = 0; i < trackCount; i++) { 555 if (!is_data_track(toc->tracks[i])) 556 count++; 557 } 558 559 return count; 560} 561 562 563// #pragma mark - Volume class 564 565 566Volume::Volume(fs_volume* fsVolume) 567 : 568 fFSVolume(fsVolume), 569 fDevice(-1), 570 fRootNode(NULL), 571 fNextID(1), 572 fName(NULL), 573 fNumBlocks(0), 574 fIgnoreCDDBLookupChanges(false), 575 fFirstEntry(NULL) 576{ 577 mutex_init(&fLock, "cdda"); 578} 579 580 581Volume::~Volume() 582{ 583 if (fRootNode) { 584 _StoreAttributes(); 585 _StoreSharedAttributes(); 586 } 587 588 if (fDevice >= 0) 589 close(fDevice); 590 591 // put_vnode on the root to release the ref to it 592 if (fRootNode) 593 put_vnode(FSVolume(), fRootNode->ID()); 594 595 delete fRootNode; 596 597 Inode* inode; 598 Inode* next; 599 600 for (inode = fFirstEntry; inode != NULL; inode = next) { 601 next = inode->Next(); 602 delete inode; 603 } 604 605 free(fName); 606 mutex_destroy(&fLock); 607} 608 609 610status_t 611Volume::InitCheck() 612{ 613 return B_OK; 614} 615 616 617status_t 618Volume::Mount(const char* device) 619{ 620 fDevice = open(device, O_RDONLY); 621 if (fDevice < 0) 622 return errno; 623 624 scsi_toc_toc* toc = (scsi_toc_toc*)malloc(1024); 625 if (toc == NULL) 626 return B_NO_MEMORY; 627 628 MemoryDeleter deleter(toc); 629 630 status_t status = read_table_of_contents(fDevice, toc, 1024); 631 // there has to be at least one audio track 632 if (status == B_OK && count_audio_tracks(toc) == 0) 633 status = B_BAD_TYPE; 634 635 if (status != B_OK) 636 return status; 637 638 fDiscID = compute_cddb_disc_id(*toc); 639 640 // create the root vnode 641 fRootNode = _CreateNode(NULL, "", 0, 0, S_IFDIR | 0777); 642 if (fRootNode == NULL) 643 status = B_NO_MEMORY; 644 if (status == B_OK) { 645 status = publish_vnode(FSVolume(), fRootNode->ID(), fRootNode, 646 &gCDDAVnodeOps, fRootNode->Type(), 0); 647 } 648 if (status != B_OK) 649 return status; 650 651 bool doLookup = true; 652 cdtext text; 653 int fd = _OpenAttributes(O_RDONLY); 654 if (fd < 0) { 655 // We do not seem to have an attribute file so this is probably the 656 // first time this CD is inserted. In this case, try to read CD-Text 657 // data. 658 if (read_cdtext(fDevice, text) == B_OK) 659 doLookup = false; 660 else 661 TRACE(("CDDA: no CD-Text found.\n")); 662 } else { 663 doLookup = false; 664 } 665 666 int32 trackCount = toc->last_track + 1 - toc->first_track; 667 off_t totalFrames = 0; 668 char title[256]; 669 670 for (int32 i = 0; i < trackCount; i++) { 671 scsi_cd_msf& next = toc->tracks[i + 1].start.time; 672 // the last track is always lead-out 673 scsi_cd_msf& start = toc->tracks[i].start.time; 674 int32 track = i + 1; 675 676 uint64 startFrame = start.minute * kFramesPerMinute 677 + start.second * kFramesPerSecond + start.frame; 678 uint64 frames = next.minute * kFramesPerMinute 679 + next.second * kFramesPerSecond + next.frame 680 - startFrame; 681 682 // Adjust length of the last audio track according to the Blue Book 683 // specification in case of an Enhanced CD 684 if (i + 1 < trackCount && is_data_track(toc->tracks[i + 1]) 685 && !is_data_track(toc->tracks[i])) 686 frames -= kDataTrackLeadGap; 687 688 totalFrames += frames; 689 690 if (is_data_track(toc->tracks[i])) 691 continue; 692 693 if (text.titles[i] != NULL) { 694 if (text.artists[i] != NULL) { 695 snprintf(title, sizeof(title), "%02" B_PRId32 ". %s - %s.wav", 696 track, text.artists[i], text.titles[i]); 697 } else { 698 snprintf(title, sizeof(title), "%02" B_PRId32 ". %s.wav", 699 track, text.titles[i]); 700 } 701 } else 702 snprintf(title, sizeof(title), "Track %02" B_PRId32 ".wav", track); 703 704 // remove '/' and '\n' from title 705 for (int32 j = 0; title[j]; j++) { 706 if (title[j] == '/') 707 title[j] = '-'; 708 else if (title[j] == '\n') 709 title[j] = ' '; 710 } 711 712 Inode* inode = _CreateNode(fRootNode, title, startFrame, frames, 713 S_IFREG | 0444); 714 if (inode == NULL) 715 continue; 716 717 // add attributes 718 719 inode->AddAttribute("Audio:Artist", B_STRING_TYPE, 720 text.artists[i] != NULL ? text.artists[i] : text.artist); 721 inode->AddAttribute("Audio:Album", B_STRING_TYPE, text.album); 722 inode->AddAttribute("Audio:Title", B_STRING_TYPE, text.titles[i]); 723 inode->AddAttribute("Audio:Genre", B_STRING_TYPE, text.genre); 724 inode->AddAttribute("Audio:Track", B_INT32_TYPE, (uint32)track); 725 inode->AddAttribute("Audio:Bitrate", B_STRING_TYPE, "1411 kbps"); 726 inode->AddAttribute("Media:Length", B_INT64_TYPE, 727 inode->FrameCount() * 1000000L / kFramesPerSecond); 728 inode->AddAttribute("BEOS:TYPE", B_MIME_STRING_TYPE, "audio/x-wav"); 729 } 730 731 // Add CD:cddbid attribute. 732 fRootNode->AddAttribute(kCddbIdAttribute, B_UINT32_TYPE, fDiscID); 733 734 // Add CD:do_lookup attribute. 735 SetCDDBLookupsEnabled(doLookup); 736 737 // Add CD:toc attribute. 738 fRootNode->AddAttribute(kTocAttribute, B_RAW_TYPE, true, 739 (const uint8*)toc, B_BENDIAN_TO_HOST_INT16(toc->data_length) + 2); 740 741 _RestoreSharedAttributes(); 742 if (fd >= 0) { 743 _RestoreAttributes(fd); 744 close(fd); 745 } 746 747 // determine volume title 748 DetermineName(fDiscID, fDevice, title, sizeof(title)); 749 750 fName = strdup(title); 751 if (fName == NULL) 752 return B_NO_MEMORY; 753 754 fNumBlocks = totalFrames; 755 return B_OK; 756} 757 758 759status_t 760Volume::SetName(const char* name) 761{ 762 if (name == NULL || !name[0]) 763 return B_BAD_VALUE; 764 765 name = strdup(name); 766 if (name == NULL) 767 return B_NO_MEMORY; 768 769 free(fName); 770 fName = (char*)name; 771 return B_OK; 772} 773 774 775mutex& 776Volume::Lock() 777{ 778 return fLock; 779} 780 781 782Inode* 783Volume::Find(ino_t id) 784{ 785 for (Inode* inode = fFirstEntry; inode != NULL; inode = inode->Next()) { 786 if (inode->ID() == id) 787 return inode; 788 } 789 790 return NULL; 791} 792 793 794Inode* 795Volume::Find(const char* name) 796{ 797 if (!strcmp(name, ".") 798 || !strcmp(name, "..")) 799 return fRootNode; 800 801 for (Inode* inode = fFirstEntry; inode != NULL; inode = inode->Next()) { 802 if (!strcmp(inode->Name(), name)) 803 return inode; 804 } 805 806 return NULL; 807} 808 809 810void 811Volume::SetCDDBLookupsEnabled(bool doLookup) 812{ 813 if (!fIgnoreCDDBLookupChanges) { 814 fRootNode->AddAttribute(kDoLookupAttribute, B_BOOL_TYPE, true, 815 (const uint8*)&doLookup, sizeof(bool)); 816 } 817} 818 819 820/*static*/ void 821Volume::DetermineName(uint32 cddbID, int device, char* name, size_t length) 822{ 823 name[0] = '\0'; 824 825 int attrFD = open_attributes(cddbID, device, O_RDONLY, 826 kDiscIDAttributes); 827 if (attrFD < 0) { 828 // We do not have attributes set. Read CD text. 829 cdtext text; 830 if (read_cdtext(device, text) == B_OK) { 831 if (text.artist != NULL && text.album != NULL) 832 snprintf(name, length, "%s - %s", text.artist, text.album); 833 else if (text.artist != NULL || text.album != NULL) { 834 snprintf(name, length, "%s", text.artist != NULL 835 ? text.artist : text.album); 836 } 837 } 838 } else { 839 // We have an attribute file. Read name from it. 840 if (!read_line(attrFD, name, length)) 841 name[0] = '\0'; 842 843 close(attrFD); 844 } 845 846 if (!name[0]) 847 strlcpy(name, "Audio CD", length); 848} 849 850 851Inode* 852Volume::_CreateNode(Inode* parent, const char* name, uint64 start, 853 uint64 frames, int32 type) 854{ 855 Inode* inode = new(std::nothrow) Inode(this, parent, name, start, frames, 856 type); 857 if (inode == NULL) 858 return NULL; 859 860 if (inode->InitCheck() != B_OK) { 861 delete inode; 862 return NULL; 863 } 864 865 if (S_ISREG(type)) { 866 // we need to order it by track for compatibility with BeOS' cdda 867 Inode* current = fFirstEntry; 868 Inode* last = NULL; 869 while (current != NULL) { 870 last = current; 871 current = current->Next(); 872 } 873 874 if (last) 875 last->SetNext(inode); 876 else 877 fFirstEntry = inode; 878 } 879 880 return inode; 881} 882 883 884/*! Opens the file that contains the volume and inode titles as well as all 885 of their attributes. 886 The attributes are stored in files below B_USER_SETTINGS_DIRECTORY/cdda. 887*/ 888int 889Volume::_OpenAttributes(int mode, enum attr_mode attrMode) 890{ 891 return open_attributes(fDiscID, fDevice, mode, attrMode); 892} 893 894 895/*! Reads the attributes, if any, that belong to the CD currently being 896 mounted. 897*/ 898void 899Volume::_RestoreAttributes() 900{ 901 int fd = _OpenAttributes(O_RDONLY); 902 if (fd < 0) 903 return; 904 905 _RestoreAttributes(fd); 906 907 close(fd); 908} 909 910 911void 912Volume::_RestoreAttributes(int fd) 913{ 914 char line[B_FILE_NAME_LENGTH]; 915 if (!read_line(fd, line, B_FILE_NAME_LENGTH)) 916 return; 917 918 SetName(line); 919 920 for (Inode* inode = fFirstEntry; inode != NULL; inode = inode->Next()) { 921 if (!read_line(fd, line, B_FILE_NAME_LENGTH)) 922 break; 923 924 inode->SetName(line); 925 } 926 927 if (read_attributes(fd, fRootNode)) { 928 for (Inode* inode = fFirstEntry; inode != NULL; inode = inode->Next()) { 929 if (!read_attributes(fd, inode)) 930 break; 931 } 932 } 933} 934 935 936void 937Volume::_StoreAttributes() 938{ 939 int fd = _OpenAttributes(O_WRONLY); 940 if (fd < 0) 941 return; 942 943 write_line(fd, Name()); 944 945 for (Inode* inode = fFirstEntry; inode != NULL; inode = inode->Next()) { 946 write_line(fd, inode->Name()); 947 } 948 949 write_attributes(fd, fRootNode); 950 951 for (Inode* inode = fFirstEntry; inode != NULL; inode = inode->Next()) { 952 write_attributes(fd, inode); 953 } 954 955 close(fd); 956} 957 958 959/*! Restores the attributes, if any, that are shared between CDs; some are 960 stored per device, others are stored for all CDs no matter which device. 961*/ 962void 963Volume::_RestoreSharedAttributes() 964{ 965 // Don't affect CDDB lookup status while changing shared attributes 966 fIgnoreCDDBLookupChanges = true; 967 968 // device attributes overwrite shared attributes 969 int fd = _OpenAttributes(O_RDONLY, kSharedAttributes); 970 if (fd >= 0) { 971 read_attributes(fd, fRootNode); 972 close(fd); 973 } 974 975 fd = _OpenAttributes(O_RDONLY, kDeviceAttributes); 976 if (fd >= 0) { 977 read_attributes(fd, fRootNode); 978 close(fd); 979 } 980 981 fIgnoreCDDBLookupChanges = false; 982} 983 984 985void 986Volume::_StoreSharedAttributes() 987{ 988 // write shared and device specific settings 989 990 int fd = _OpenAttributes(O_WRONLY, kSharedAttributes); 991 if (fd >= 0) { 992 write_attributes(fd, fRootNode, kSharedAttributes); 993 close(fd); 994 } 995 996 fd = _OpenAttributes(O_WRONLY, kDeviceAttributes); 997 if (fd >= 0) { 998 write_attributes(fd, fRootNode, kDeviceAttributes); 999 close(fd); 1000 } 1001} 1002 1003 1004// #pragma mark - Attribute class 1005 1006 1007Attribute::Attribute(const char* name, type_code type) 1008 : 1009 fName(NULL), 1010 fType(0), 1011 fData(NULL), 1012 fSize(0) 1013{ 1014 SetTo(name, type); 1015} 1016 1017 1018Attribute::~Attribute() 1019{ 1020 free(fName); 1021 free(fData); 1022} 1023 1024 1025status_t 1026Attribute::SetTo(const char* name, type_code type) 1027{ 1028 if (name == NULL || !name[0]) 1029 return B_BAD_VALUE; 1030 1031 name = strdup(name); 1032 if (name == NULL) 1033 return B_NO_MEMORY; 1034 1035 free(fName); 1036 1037 fName = (char*)name; 1038 fType = type; 1039 return B_OK; 1040} 1041 1042 1043status_t 1044Attribute::ReadAt(off_t offset, uint8* buffer, size_t* _length) 1045{ 1046 size_t length = *_length; 1047 1048 if (offset < 0) 1049 return B_BAD_VALUE; 1050 if (offset >= fSize) { 1051 *_length = 0; 1052 return B_OK; 1053 } 1054 if (offset + (off_t)length > fSize) 1055 length = fSize - offset; 1056 1057 if (user_memcpy(buffer, fData + offset, length) < B_OK) 1058 return B_BAD_ADDRESS; 1059 1060 *_length = length; 1061 return B_OK; 1062} 1063 1064 1065/*! Writes to the attribute and enlarges it as needed. 1066 An attribute has a maximum size of 65536 bytes for now. 1067*/ 1068status_t 1069Attribute::WriteAt(off_t offset, const uint8* buffer, size_t* _length) 1070{ 1071 size_t length = *_length; 1072 1073 if (offset < 0) 1074 return B_BAD_VALUE; 1075 1076 // we limit the attribute size to something reasonable 1077 off_t end = offset + length; 1078 if (end > kMaxAttributeSize) { 1079 end = kMaxAttributeSize; 1080 length = end - offset; 1081 } 1082 if (offset > end) { 1083 *_length = 0; 1084 return E2BIG; 1085 } 1086 1087 if (end > fSize) { 1088 // make room in the data stream 1089 uint8* data = (uint8*)realloc(fData, end); 1090 if (data == NULL) 1091 return B_NO_MEMORY; 1092 1093 if (fSize < offset) 1094 memset(data + fSize, 0, offset - fSize); 1095 1096 fData = data; 1097 fSize = end; 1098 } 1099 1100 if (user_memcpy(fData + offset, buffer, length) < B_OK) 1101 return B_BAD_ADDRESS; 1102 1103 *_length = length; 1104 return B_OK; 1105} 1106 1107 1108//! Removes all data from the attribute. 1109void 1110Attribute::Truncate() 1111{ 1112 free(fData); 1113 fData = NULL; 1114 fSize = 0; 1115} 1116 1117 1118/*! Resizes the data part of an attribute to the requested amount \a size. 1119 An attribute has a maximum size of 65536 bytes for now. 1120*/ 1121status_t 1122Attribute::SetSize(off_t size) 1123{ 1124 if (size > kMaxAttributeSize) 1125 return E2BIG; 1126 1127 uint8* data = (uint8*)realloc(fData, size); 1128 if (data == NULL) 1129 return B_NO_MEMORY; 1130 1131 if (fSize < size) 1132 memset(data + fSize, 0, size - fSize); 1133 1134 fData = data; 1135 fSize = size; 1136 return B_OK; 1137} 1138 1139 1140bool 1141Attribute::IsProtectedNamespace() 1142{ 1143 // Check if the attribute is in the restricted namespace. Attributes in 1144 // this namespace should not be edited by the user as they are handled 1145 // internally by the add-on. Calls the static version. 1146 return IsProtectedNamespace(fName); 1147} 1148 1149 1150bool 1151Attribute::IsProtectedNamespace(const char* name) 1152{ 1153 // Convenience static version of the above method. Usually called when we 1154 // don't have a constructed Attribute object handy. 1155 return strncmp(kProtectedAttrNamespace, name, 1156 strlen(kProtectedAttrNamespace)) == 0; 1157} 1158 1159 1160// #pragma mark - Inode class 1161 1162 1163Inode::Inode(Volume* volume, Inode* parent, const char* name, uint64 start, 1164 uint64 frames, int32 type) 1165 : 1166 fNext(NULL) 1167{ 1168 memset(&fWAVHeader, 0, sizeof(wav_header)); 1169 1170 fID = volume->GetNextNodeID(); 1171 fType = type; 1172 fStartFrame = start; 1173 fFrameCount = frames; 1174 1175 fUserID = geteuid(); 1176 fGroupID = parent ? parent->GroupID() : getegid(); 1177 1178 fCreationTime = fModificationTime = time(NULL); 1179 1180 fName = strdup(name); 1181 if (fName == NULL) 1182 return; 1183 1184 if (frames) { 1185 // initialize WAV header 1186 1187 // RIFF header 1188 fWAVHeader.header.magic = B_HOST_TO_BENDIAN_INT32('RIFF'); 1189 fWAVHeader.header.length = B_HOST_TO_LENDIAN_INT32(Size() 1190 + sizeof(wav_header) - sizeof(riff_chunk)); 1191 fWAVHeader.header.id = B_HOST_TO_BENDIAN_INT32('WAVE'); 1192 1193 // 'fmt ' format chunk 1194 fWAVHeader.format.fourcc = B_HOST_TO_BENDIAN_INT32('fmt '); 1195 fWAVHeader.format.length = B_HOST_TO_LENDIAN_INT32( 1196 sizeof(wav_format_chunk) - sizeof(riff_chunk)); 1197 fWAVHeader.format.format_tag = B_HOST_TO_LENDIAN_INT16(1); 1198 fWAVHeader.format.channels = B_HOST_TO_LENDIAN_INT16(2); 1199 fWAVHeader.format.samples_per_second = B_HOST_TO_LENDIAN_INT32(44100); 1200 fWAVHeader.format.average_bytes_per_second = B_HOST_TO_LENDIAN_INT32( 1201 44100 * sizeof(uint16) * 2); 1202 fWAVHeader.format.block_align = B_HOST_TO_LENDIAN_INT16(4); 1203 fWAVHeader.format.bits_per_sample = B_HOST_TO_LENDIAN_INT16(16); 1204 1205 // 'data' chunk 1206 fWAVHeader.data.fourcc = B_HOST_TO_BENDIAN_INT32('data'); 1207 fWAVHeader.data.length = B_HOST_TO_LENDIAN_INT32(Size()); 1208 } 1209} 1210 1211 1212Inode::~Inode() 1213{ 1214 free(const_cast<char*>(fName)); 1215} 1216 1217 1218status_t 1219Inode::InitCheck() 1220{ 1221 if (fName == NULL) 1222 return B_NO_MEMORY; 1223 1224 return B_OK; 1225} 1226 1227 1228status_t 1229Inode::SetName(const char* name) 1230{ 1231 if (name == NULL || !name[0] 1232 || strchr(name, '/') != NULL 1233 || strchr(name, '\n') != NULL) 1234 return B_BAD_VALUE; 1235 1236 name = strdup(name); 1237 if (name == NULL) 1238 return B_NO_MEMORY; 1239 1240 free(fName); 1241 fName = (char*)name; 1242 return B_OK; 1243} 1244 1245 1246Attribute* 1247Inode::FindAttribute(const char* name) const 1248{ 1249 if (name == NULL || !name[0]) 1250 return NULL; 1251 1252 AttributeList::ConstIterator iterator = fAttributes.GetIterator(); 1253 1254 while (iterator.HasNext()) { 1255 Attribute* attribute = iterator.Next(); 1256 if (!strcmp(attribute->Name(), name)) 1257 return attribute; 1258 } 1259 1260 return NULL; 1261} 1262 1263 1264status_t 1265Inode::AddAttribute(Attribute* attribute, bool overwrite) 1266{ 1267 Attribute* oldAttribute = FindAttribute(attribute->Name()); 1268 if (oldAttribute != NULL) { 1269 if (!overwrite) 1270 return B_NAME_IN_USE; 1271 1272 fAttributes.Remove(oldAttribute); 1273 delete oldAttribute; 1274 } 1275 1276 fAttributes.Add(attribute); 1277 return B_OK; 1278} 1279 1280 1281status_t 1282Inode::AddAttribute(const char* name, type_code type, bool overwrite, 1283 const uint8* data, size_t length) 1284{ 1285 Attribute* attribute = new(std::nothrow) Attribute(name, type); 1286 if (attribute == NULL) 1287 return B_NO_MEMORY; 1288 1289 status_t status = attribute->InitCheck(); 1290 if (status == B_OK && data != NULL && length != 0) 1291 status = attribute->WriteAt(0, data, &length); 1292 if (status == B_OK) 1293 status = AddAttribute(attribute, overwrite); 1294 if (status != B_OK) { 1295 delete attribute; 1296 return status; 1297 } 1298 1299 return B_OK; 1300} 1301 1302 1303status_t 1304Inode::AddAttribute(const char* name, type_code type, const char* string) 1305{ 1306 if (string == NULL) 1307 return B_BAD_VALUE; 1308 1309 return AddAttribute(name, type, true, (const uint8*)string, 1310 strlen(string)); 1311} 1312 1313 1314status_t 1315Inode::AddAttribute(const char* name, type_code type, uint32 value) 1316{ 1317 uint32 data = B_HOST_TO_LENDIAN_INT32(value); 1318 return AddAttribute(name, type, true, (const uint8*)&data, sizeof(uint32)); 1319} 1320 1321 1322status_t 1323Inode::AddAttribute(const char* name, type_code type, uint64 value) 1324{ 1325 uint64 data = B_HOST_TO_LENDIAN_INT64(value); 1326 return AddAttribute(name, type, true, (const uint8*)&data, sizeof(uint64)); 1327} 1328 1329 1330status_t 1331Inode::RemoveAttribute(const char* name, bool checkNamespace) 1332{ 1333 if (name == NULL || !name[0]) 1334 return B_ENTRY_NOT_FOUND; 1335 1336 AttributeList::Iterator iterator = fAttributes.GetIterator(); 1337 1338 while (iterator.HasNext()) { 1339 Attribute* attribute = iterator.Next(); 1340 if (!strcmp(attribute->Name(), name)) { 1341 // check for restricted namespace if required. 1342 if (checkNamespace && attribute->IsProtectedNamespace()) 1343 return B_NOT_ALLOWED; 1344 // look for attribute in cookies 1345 AttrCookieList::Iterator i = fAttrCookies.GetIterator(); 1346 while (i.HasNext()) { 1347 attr_cookie* cookie = i.Next(); 1348 if (cookie->current == attribute) { 1349 cookie->current 1350 = attribute->GetDoublyLinkedListLink()->next; 1351 } 1352 } 1353 1354 iterator.Remove(); 1355 delete attribute; 1356 return B_OK; 1357 } 1358 } 1359 1360 return B_ENTRY_NOT_FOUND; 1361} 1362 1363 1364void 1365Inode::AddAttrCookie(attr_cookie* cookie) 1366{ 1367 fAttrCookies.Add(cookie); 1368 RewindAttrCookie(cookie); 1369} 1370 1371 1372void 1373Inode::RemoveAttrCookie(attr_cookie* cookie) 1374{ 1375 if (!fAttrCookies.Remove(cookie)) 1376 panic("Tried to remove %p which is not in cookie list.", cookie); 1377} 1378 1379 1380void 1381Inode::RewindAttrCookie(attr_cookie* cookie) 1382{ 1383 cookie->current = fAttributes.First(); 1384} 1385 1386 1387// #pragma mark - Module API 1388 1389 1390static float 1391cdda_identify_partition(int fd, partition_data* partition, void** _cookie) 1392{ 1393 scsi_toc_toc* toc = (scsi_toc_toc*)malloc(2048); 1394 if (toc == NULL) 1395 return -1; 1396 1397 status_t status = read_table_of_contents(fd, toc, 2048); 1398 1399 // If we succeeded in reading the toc, check the tracks in the 1400 // partition, which may not be the whole CD, and if any are audio, 1401 // claim the partition. 1402 if (status == B_OK) { 1403 uint32 trackCount = toc->last_track + (uint32)1 - toc->first_track; 1404 uint64 sessionStartLBA = partition->offset / partition->block_size; 1405 uint64 sessionEndLBA = sessionStartLBA 1406 + (partition->size / partition->block_size); 1407 TRACE(("cdda_identify_partition: session at %lld-%lld\n", 1408 sessionStartLBA, sessionEndLBA)); 1409 status = B_ENTRY_NOT_FOUND; 1410 for (uint32 i = 0; i < trackCount; i++) { 1411 // We have to get trackLBA from track.start.time since 1412 // track.start.lba is useless for this. 1413 // This is how session gets it. 1414 uint64 trackLBA 1415 = ((toc->tracks[i].start.time.minute * kFramesPerMinute) 1416 + (toc->tracks[i].start.time.second * kFramesPerSecond) 1417 + toc->tracks[i].start.time.frame - 150); 1418 if (trackLBA >= sessionStartLBA && trackLBA < sessionEndLBA) { 1419 if (is_data_track(toc->tracks[i])) { 1420 TRACE(("cdda_identify_partition: track %ld at %lld is " 1421 "data\n", i + 1, trackLBA)); 1422 status = B_BAD_TYPE; 1423 } else { 1424 TRACE(("cdda_identify_partition: track %ld at %lld is " 1425 "audio\n", i + 1, trackLBA)); 1426 status = B_OK; 1427 break; 1428 } 1429 } 1430 } 1431 } 1432 1433 if (status != B_OK) { 1434 free(toc); 1435 return -1; 1436 } 1437 1438 *_cookie = toc; 1439 return 0.8f; 1440} 1441 1442 1443static status_t 1444cdda_scan_partition(int fd, partition_data* partition, void* _cookie) 1445{ 1446 scsi_toc_toc* toc = (scsi_toc_toc*)_cookie; 1447 1448 partition->status = B_PARTITION_VALID; 1449 partition->flags |= B_PARTITION_FILE_SYSTEM; 1450 1451 // compute length 1452 1453 uint32 lastTrack = toc->last_track + 1 - toc->first_track; 1454 scsi_cd_msf& end = toc->tracks[lastTrack].start.time; 1455 1456 partition->content_size = ((off_t)end.minute * kFramesPerMinute 1457 + end.second * kFramesPerSecond + end.frame) * kFrameSize; 1458 partition->block_size = kFrameSize; 1459 1460 // determine volume title 1461 1462 char name[256]; 1463 Volume::DetermineName(compute_cddb_disc_id(*toc), fd, name, sizeof(name)); 1464 1465 partition->content_name = strdup(name); 1466 if (partition->content_name == NULL) 1467 return B_NO_MEMORY; 1468 1469 return B_OK; 1470} 1471 1472 1473static void 1474cdda_free_identify_partition_cookie(partition_data* partition, void* _cookie) 1475{ 1476 free(_cookie); 1477} 1478 1479 1480static status_t 1481cdda_mount(fs_volume* fsVolume, const char* device, uint32 flags, 1482 const char* args, ino_t* _rootVnodeID) 1483{ 1484 TRACE(("cdda_mount: entry\n")); 1485 1486 Volume* volume = new(std::nothrow) Volume(fsVolume); 1487 if (volume == NULL) 1488 return B_NO_MEMORY; 1489 1490 status_t status = volume->InitCheck(); 1491 if (status == B_OK) 1492 status = volume->Mount(device); 1493 1494 if (status < B_OK) { 1495 delete volume; 1496 return status; 1497 } 1498 1499 *_rootVnodeID = volume->RootNode().ID(); 1500 fsVolume->private_volume = volume; 1501 fsVolume->ops = &gCDDAVolumeOps; 1502 1503 return B_OK; 1504} 1505 1506 1507static status_t 1508cdda_unmount(fs_volume* _volume) 1509{ 1510 Volume* volume = (Volume*)_volume->private_volume; 1511 1512 TRACE(("cdda_unmount: entry fs = %p\n", _volume)); 1513 delete volume; 1514 1515 return 0; 1516} 1517 1518 1519static status_t 1520cdda_read_fs_stat(fs_volume* _volume, struct fs_info* info) 1521{ 1522 Volume* volume = (Volume*)_volume->private_volume; 1523 MutexLocker locker(volume->Lock()); 1524 1525 // File system flags. 1526 info->flags = B_FS_IS_PERSISTENT | B_FS_HAS_ATTR | B_FS_HAS_MIME 1527 | B_FS_IS_REMOVABLE; 1528 info->io_size = 65536; 1529 1530 info->block_size = 2048; 1531 info->total_blocks = volume->NumBlocks(); 1532 info->free_blocks = 0; 1533 1534 // Volume name 1535 strlcpy(info->volume_name, volume->Name(), sizeof(info->volume_name)); 1536 1537 // File system name 1538 strlcpy(info->fsh_name, "cdda", sizeof(info->fsh_name)); 1539 1540 return B_OK; 1541} 1542 1543 1544static status_t 1545cdda_write_fs_stat(fs_volume* _volume, const struct fs_info* info, uint32 mask) 1546{ 1547 Volume* volume = (Volume*)_volume->private_volume; 1548 MutexLocker locker(volume->Lock()); 1549 1550 status_t status = B_BAD_VALUE; 1551 1552 if ((mask & FS_WRITE_FSINFO_NAME) != 0) { 1553 status = volume->SetName(info->volume_name); 1554 } 1555 1556 return status; 1557} 1558 1559 1560static status_t 1561cdda_sync(fs_volume* _volume) 1562{ 1563 TRACE(("cdda_sync: entry\n")); 1564 1565 return B_OK; 1566} 1567 1568 1569static status_t 1570cdda_lookup(fs_volume* _volume, fs_vnode* _dir, const char* name, ino_t* _id) 1571{ 1572 Volume* volume = (Volume*)_volume->private_volume; 1573 status_t status; 1574 1575 TRACE(("cdda_lookup: entry dir %p, name '%s'\n", _dir, name)); 1576 1577 Inode* directory = (Inode*)_dir->private_node; 1578 if (!S_ISDIR(directory->Type())) 1579 return B_NOT_A_DIRECTORY; 1580 1581 MutexLocker _(volume->Lock()); 1582 1583 Inode* inode = volume->Find(name); 1584 if (inode == NULL) 1585 return B_ENTRY_NOT_FOUND; 1586 1587 status = get_vnode(volume->FSVolume(), inode->ID(), NULL); 1588 if (status < B_OK) 1589 return status; 1590 1591 *_id = inode->ID(); 1592 return B_OK; 1593} 1594 1595 1596static status_t 1597cdda_get_vnode_name(fs_volume* _volume, fs_vnode* _node, char* buffer, 1598 size_t bufferSize) 1599{ 1600 Volume* volume = (Volume*)_volume->private_volume; 1601 Inode* inode = (Inode*)_node->private_node; 1602 1603 TRACE(("cdda_get_vnode_name(): inode = %p\n", inode)); 1604 1605 MutexLocker _(volume->Lock()); 1606 strlcpy(buffer, inode->Name(), bufferSize); 1607 return B_OK; 1608} 1609 1610 1611static status_t 1612cdda_get_vnode(fs_volume* _volume, ino_t id, fs_vnode* _node, int* _type, 1613 uint32* _flags, bool reenter) 1614{ 1615 Volume* volume = (Volume*)_volume->private_volume; 1616 Inode* inode; 1617 1618 TRACE(("cdda_getvnode: asking for vnode 0x%Lx, r %d\n", id, reenter)); 1619 1620 inode = volume->Find(id); 1621 if (inode == NULL) 1622 return B_ENTRY_NOT_FOUND; 1623 1624 _node->private_node = inode; 1625 _node->ops = &gCDDAVnodeOps; 1626 *_type = inode->Type(); 1627 *_flags = 0; 1628 return B_OK; 1629} 1630 1631 1632static status_t 1633cdda_put_vnode(fs_volume* _volume, fs_vnode* _node, bool reenter) 1634{ 1635 return B_OK; 1636} 1637 1638 1639static status_t 1640cdda_open(fs_volume* _volume, fs_vnode* _node, int openMode, void** _cookie) 1641{ 1642 TRACE(("cdda_open(): node = %p, openMode = %d\n", _node, openMode)); 1643 1644 file_cookie* cookie = (file_cookie*)malloc(sizeof(file_cookie)); 1645 if (cookie == NULL) 1646 return B_NO_MEMORY; 1647 1648 TRACE((" open cookie = %p\n", cookie)); 1649 cookie->open_mode = openMode; 1650 cookie->buffer = NULL; 1651 1652 *_cookie = (void*)cookie; 1653 1654 return B_OK; 1655} 1656 1657 1658static status_t 1659cdda_close(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1660{ 1661 return B_OK; 1662} 1663 1664 1665static status_t 1666cdda_free_cookie(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1667{ 1668 file_cookie* cookie = (file_cookie*)_cookie; 1669 1670 TRACE(("cdda_freecookie: entry vnode %p, cookie %p\n", _node, _cookie)); 1671 1672 free(cookie); 1673 return B_OK; 1674} 1675 1676 1677static status_t 1678cdda_fsync(fs_volume* _volume, fs_vnode* _node) 1679{ 1680 return B_OK; 1681} 1682 1683 1684static status_t 1685cdda_read(fs_volume* _volume, fs_vnode* _node, void* _cookie, off_t offset, 1686 void* buffer, size_t* _length) 1687{ 1688 file_cookie* cookie = (file_cookie*)_cookie; 1689 Volume* volume = (Volume*)_volume->private_volume; 1690 Inode* inode = (Inode*)_node->private_node; 1691 1692 TRACE(("cdda_read(vnode = %p, offset %lld, length = %lu, mode = %d)\n", 1693 _node, offset, *_length, cookie->open_mode)); 1694 1695 if (S_ISDIR(inode->Type())) 1696 return B_IS_A_DIRECTORY; 1697 if (offset < 0) 1698 return B_BAD_VALUE; 1699 1700 off_t maxSize = inode->Size() + sizeof(wav_header); 1701 if (offset >= maxSize) { 1702 *_length = 0; 1703 return B_OK; 1704 } 1705 1706 if (cookie->buffer == NULL) { 1707 // TODO: move that to open() to make sure reading can't fail for this reason? 1708 cookie->buffer = malloc(volume->BufferSize()); 1709 if (cookie->buffer == NULL) 1710 return B_NO_MEMORY; 1711 1712 cookie->buffer_offset = -1; 1713 } 1714 1715 size_t length = *_length; 1716 if (offset + (off_t)length > maxSize) 1717 length = maxSize - offset; 1718 1719 status_t status = B_OK; 1720 size_t bytesRead = 0; 1721 1722 if (offset < (off_t)sizeof(wav_header)) { 1723 // read fake WAV header 1724 size_t size = sizeof(wav_header) - offset; 1725 size = min_c(size, length); 1726 1727 if (user_memcpy(buffer, (uint8*)inode->WAVHeader() + offset, size) 1728 < B_OK) 1729 return B_BAD_ADDRESS; 1730 1731 buffer = (void*)((uint8*)buffer + size); 1732 length -= size; 1733 bytesRead += size; 1734 offset = 0; 1735 } else 1736 offset -= sizeof(wav_header); 1737 1738 if (length > 0) { 1739 // read actual CD data 1740 offset += inode->StartFrame() * kFrameSize; 1741 1742 status = read_cdda_data(volume->Device(), 1743 inode->StartFrame() + inode->FrameCount(), offset, buffer, length, 1744 cookie->buffer_offset, cookie->buffer, volume->BufferSize()); 1745 1746 bytesRead += length; 1747 } 1748 if (status == B_OK) 1749 *_length = bytesRead; 1750 1751 return status; 1752} 1753 1754 1755static bool 1756cdda_can_page(fs_volume* _volume, fs_vnode* _node, void* cookie) 1757{ 1758 return false; 1759} 1760 1761 1762static status_t 1763cdda_read_pages(fs_volume* _volume, fs_vnode* _node, void* cookie, off_t pos, 1764 const iovec* vecs, size_t count, size_t* _numBytes) 1765{ 1766 return B_NOT_ALLOWED; 1767} 1768 1769 1770static status_t 1771cdda_write_pages(fs_volume* _volume, fs_vnode* _node, void* cookie, off_t pos, 1772 const iovec* vecs, size_t count, size_t* _numBytes) 1773{ 1774 return B_NOT_ALLOWED; 1775} 1776 1777 1778static status_t 1779cdda_read_stat(fs_volume* _volume, fs_vnode* _node, struct stat* stat) 1780{ 1781 Volume* volume = (Volume*)_volume->private_volume; 1782 Inode* inode = (Inode*)_node->private_node; 1783 1784 TRACE(("cdda_read_stat: vnode %p (0x%Lx), stat %p\n", inode, inode->ID(), 1785 stat)); 1786 1787 fill_stat_buffer(volume, inode, NULL, *stat); 1788 1789 return B_OK; 1790} 1791 1792 1793status_t 1794cdda_rename(fs_volume* _volume, fs_vnode* _oldDir, const char* oldName, 1795 fs_vnode* _newDir, const char* newName) 1796{ 1797 if (_oldDir->private_node != _newDir->private_node) 1798 return B_BAD_VALUE; 1799 1800 // we only have a single directory which simplifies things a bit :-) 1801 1802 Volume *volume = (Volume*)_volume->private_volume; 1803 MutexLocker _(volume->Lock()); 1804 1805 Inode* inode = volume->Find(oldName); 1806 if (inode == NULL) 1807 return B_ENTRY_NOT_FOUND; 1808 1809 if (volume->Find(newName) != NULL) 1810 return B_NAME_IN_USE; 1811 1812 status_t status = inode->SetName(newName); 1813 if (status == B_OK) { 1814 // One of the tracks had its name edited from outside the filesystem 1815 // add-on. Disable CDDB lookups. Note this will usually mean that the 1816 // user manually renamed a track or that cddblinkd (or other program) 1817 // did this so we do not want to do it again. 1818 volume->SetCDDBLookupsEnabled(false); 1819 1820 notify_entry_moved(volume->ID(), volume->RootNode().ID(), oldName, 1821 volume->RootNode().ID(), newName, inode->ID()); 1822 } 1823 1824 return status; 1825} 1826 1827 1828// #pragma mark - directory functions 1829 1830 1831static status_t 1832cdda_open_dir(fs_volume* _volume, fs_vnode* _node, void** _cookie) 1833{ 1834 Volume* volume = (Volume*)_volume->private_volume; 1835 1836 TRACE(("cdda_open_dir(): vnode = %p\n", _node)); 1837 1838 Inode* inode = (Inode*)_node->private_node; 1839 if (!S_ISDIR(inode->Type())) 1840 return B_NOT_A_DIRECTORY; 1841 1842 if (inode != &volume->RootNode()) 1843 panic("pipefs: found directory that's not the root!"); 1844 1845 dir_cookie* cookie = (dir_cookie*)malloc(sizeof(dir_cookie)); 1846 if (cookie == NULL) 1847 return B_NO_MEMORY; 1848 1849 cookie->current = volume->FirstEntry(); 1850 cookie->state = ITERATION_STATE_BEGIN; 1851 1852 *_cookie = (void*)cookie; 1853 return B_OK; 1854} 1855 1856 1857static status_t 1858cdda_read_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie, 1859 struct dirent* buffer, size_t bufferSize, uint32* _num) 1860{ 1861 Volume* volume = (Volume*)_volume->private_volume; 1862 Inode* inode = (Inode*)_node->private_node; 1863 1864 TRACE(("cdda_read_dir: vnode %p, cookie %p, buffer = %p, bufferSize = %ld," 1865 " num = %p\n", _node, _cookie, buffer, bufferSize,_num)); 1866 1867 if ((Inode*)_node->private_node != &volume->RootNode()) 1868 return B_BAD_VALUE; 1869 1870 MutexLocker _(volume->Lock()); 1871 1872 dir_cookie* cookie = (dir_cookie*)_cookie; 1873 Inode* childNode = NULL; 1874 const char* name = NULL; 1875 Inode* nextChildNode = NULL; 1876 int nextState = cookie->state; 1877 uint32 max = *_num; 1878 uint32 count = 0; 1879 1880 while (count < max && bufferSize > sizeof(dirent)) { 1881 switch (cookie->state) { 1882 case ITERATION_STATE_DOT: 1883 childNode = inode; 1884 name = "."; 1885 nextChildNode = volume->FirstEntry(); 1886 nextState = cookie->state + 1; 1887 break; 1888 case ITERATION_STATE_DOT_DOT: 1889 childNode = inode; // parent of the root node is the root node 1890 name = ".."; 1891 nextChildNode = volume->FirstEntry(); 1892 nextState = cookie->state + 1; 1893 break; 1894 default: 1895 childNode = cookie->current; 1896 if (childNode) { 1897 name = childNode->Name(); 1898 nextChildNode = childNode->Next(); 1899 } 1900 break; 1901 } 1902 1903 if (childNode == NULL) { 1904 // we're at the end of the directory 1905 break; 1906 } 1907 1908 buffer->d_dev = volume->FSVolume()->id; 1909 buffer->d_ino = childNode->ID(); 1910 buffer->d_reclen = offsetof(struct dirent, d_name) + strlen(name) + 1; 1911 1912 if (buffer->d_reclen > bufferSize) { 1913 if (count == 0) 1914 return ENOBUFS; 1915 1916 break; 1917 } 1918 1919 strcpy(buffer->d_name, name); 1920 1921 bufferSize -= buffer->d_reclen; 1922 buffer = (struct dirent*)((uint8*)buffer + buffer->d_reclen); 1923 count++; 1924 1925 cookie->current = nextChildNode; 1926 cookie->state = nextState; 1927 } 1928 1929 *_num = count; 1930 return B_OK; 1931} 1932 1933 1934static status_t 1935cdda_rewind_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1936{ 1937 Volume* volume = (Volume*)_volume->private_volume; 1938 1939 dir_cookie* cookie = (dir_cookie*)_cookie; 1940 cookie->current = volume->FirstEntry(); 1941 cookie->state = ITERATION_STATE_BEGIN; 1942 1943 return B_OK; 1944} 1945 1946 1947static status_t 1948cdda_close_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1949{ 1950 TRACE(("cdda_close: entry vnode %p, cookie %p\n", _node, _cookie)); 1951 1952 return 0; 1953} 1954 1955 1956static status_t 1957cdda_free_dir_cookie(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1958{ 1959 dir_cookie* cookie = (dir_cookie*)_cookie; 1960 1961 TRACE(("cdda_freecookie: entry vnode %p, cookie %p\n", _node, cookie)); 1962 1963 free(cookie); 1964 return 0; 1965} 1966 1967 1968// #pragma mark - attribute functions 1969 1970 1971static status_t 1972cdda_open_attr_dir(fs_volume* _volume, fs_vnode* _node, void** _cookie) 1973{ 1974 Volume* volume = (Volume*)_volume->private_volume; 1975 Inode* inode = (Inode*)_node->private_node; 1976 1977 attr_cookie* cookie = new(std::nothrow) attr_cookie; 1978 if (cookie == NULL) 1979 return B_NO_MEMORY; 1980 1981 MutexLocker _(volume->Lock()); 1982 1983 inode->AddAttrCookie(cookie); 1984 *_cookie = cookie; 1985 return B_OK; 1986} 1987 1988 1989static status_t 1990cdda_close_attr_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1991{ 1992 return B_OK; 1993} 1994 1995 1996static status_t 1997cdda_free_attr_dir_cookie(fs_volume* _volume, fs_vnode* _node, void* _cookie) 1998{ 1999 Volume* volume = (Volume*)_volume->private_volume; 2000 Inode* inode = (Inode*)_node->private_node; 2001 attr_cookie* cookie = (attr_cookie*)_cookie; 2002 2003 MutexLocker _(volume->Lock()); 2004 2005 inode->RemoveAttrCookie(cookie); 2006 delete cookie; 2007 return B_OK; 2008} 2009 2010 2011static status_t 2012cdda_rewind_attr_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie) 2013{ 2014 Volume* volume = (Volume*)_volume->private_volume; 2015 Inode* inode = (Inode*)_node->private_node; 2016 attr_cookie* cookie = (attr_cookie*)_cookie; 2017 2018 MutexLocker _(volume->Lock()); 2019 2020 inode->RewindAttrCookie(cookie); 2021 return B_OK; 2022} 2023 2024 2025static status_t 2026cdda_read_attr_dir(fs_volume* _volume, fs_vnode* _node, void* _cookie, 2027 struct dirent* dirent, size_t bufferSize, uint32* _num) 2028{ 2029 Volume* volume = (Volume*)_volume->private_volume; 2030 Inode* inode = (Inode*)_node->private_node; 2031 attr_cookie* cookie = (attr_cookie*)_cookie; 2032 2033 MutexLocker _(volume->Lock()); 2034 Attribute* attribute = cookie->current; 2035 2036 if (attribute == NULL) { 2037 *_num = 0; 2038 return B_OK; 2039 } 2040 2041 size_t length = strlcpy(dirent->d_name, attribute->Name(), bufferSize); 2042 dirent->d_dev = volume->FSVolume()->id; 2043 dirent->d_ino = inode->ID(); 2044 dirent->d_reclen = offsetof(struct dirent, d_name) + length + 1; 2045 2046 cookie->current = attribute->GetDoublyLinkedListLink()->next; 2047 *_num = 1; 2048 return B_OK; 2049} 2050 2051 2052static status_t 2053cdda_create_attr(fs_volume* _volume, fs_vnode* _node, const char* name, 2054 uint32 type, int openMode, void** _cookie) 2055{ 2056 Volume *volume = (Volume*)_volume->private_volume; 2057 Inode *inode = (Inode*)_node->private_node; 2058 2059 MutexLocker _(volume->Lock()); 2060 2061 Attribute* attribute = inode->FindAttribute(name); 2062 if (attribute == NULL) { 2063 if (Attribute::IsProtectedNamespace(name)) 2064 return B_NOT_ALLOWED; 2065 status_t status = inode->AddAttribute(name, type, true, NULL, 0); 2066 if (status != B_OK) 2067 return status; 2068 2069 notify_attribute_changed(volume->ID(), -1, inode->ID(), name, 2070 B_ATTR_CREATED); 2071 } else if ((openMode & O_EXCL) == 0) { 2072 if (attribute->IsProtectedNamespace()) 2073 return B_NOT_ALLOWED; 2074 attribute->SetType(type); 2075 if ((openMode & O_TRUNC) != 0) 2076 attribute->Truncate(); 2077 } else 2078 return B_FILE_EXISTS; 2079 2080 *_cookie = strdup(name); 2081 if (*_cookie == NULL) 2082 return B_NO_MEMORY; 2083 2084 return B_OK; 2085} 2086 2087 2088static status_t 2089cdda_open_attr(fs_volume* _volume, fs_vnode* _node, const char* name, 2090 int openMode, void** _cookie) 2091{ 2092 Volume* volume = (Volume*)_volume->private_volume; 2093 Inode* inode = (Inode*)_node->private_node; 2094 2095 MutexLocker _(volume->Lock()); 2096 2097 Attribute* attribute = inode->FindAttribute(name); 2098 if (attribute == NULL) 2099 return B_ENTRY_NOT_FOUND; 2100 2101 *_cookie = strdup(name); 2102 if (*_cookie == NULL) 2103 return B_NO_MEMORY; 2104 2105 return B_OK; 2106} 2107 2108 2109static status_t 2110cdda_close_attr(fs_volume* _volume, fs_vnode* _node, void* cookie) 2111{ 2112 return B_OK; 2113} 2114 2115 2116static status_t 2117cdda_free_attr_cookie(fs_volume* _volume, fs_vnode* _node, void* cookie) 2118{ 2119 free(cookie); 2120 return B_OK; 2121} 2122 2123 2124static status_t 2125cdda_read_attr(fs_volume* _volume, fs_vnode* _node, void* _cookie, 2126 off_t offset, void* buffer, size_t* _length) 2127{ 2128 Volume* volume = (Volume*)_volume->private_volume; 2129 Inode* inode = (Inode*)_node->private_node; 2130 2131 MutexLocker _(volume->Lock()); 2132 2133 Attribute* attribute = inode->FindAttribute((const char*)_cookie); 2134 if (attribute == NULL) 2135 return B_ENTRY_NOT_FOUND; 2136 2137 return attribute->ReadAt(offset, (uint8*)buffer, _length); 2138} 2139 2140 2141static status_t 2142cdda_write_attr(fs_volume* _volume, fs_vnode* _node, void* _cookie, 2143 off_t offset, const void* buffer, size_t* _length) 2144{ 2145 Volume* volume = (Volume*)_volume->private_volume; 2146 Inode* inode = (Inode*)_node->private_node; 2147 2148 MutexLocker _(volume->Lock()); 2149 2150 Attribute* attribute = inode->FindAttribute((const char*)_cookie); 2151 if (attribute == NULL) 2152 return B_ENTRY_NOT_FOUND; 2153 2154 if (attribute->IsProtectedNamespace()) 2155 return B_NOT_ALLOWED; 2156 2157 status_t status = attribute->WriteAt(offset, (uint8*)buffer, _length); 2158 if (status == B_OK) { 2159 notify_attribute_changed(volume->ID(), -1, inode->ID(), 2160 attribute->Name(), B_ATTR_CHANGED); 2161 } 2162 return status; 2163} 2164 2165 2166static status_t 2167cdda_read_attr_stat(fs_volume* _volume, fs_vnode* _node, void* _cookie, 2168 struct stat* stat) 2169{ 2170 Volume* volume = (Volume*)_volume->private_volume; 2171 Inode* inode = (Inode*)_node->private_node; 2172 2173 MutexLocker _(volume->Lock()); 2174 2175 Attribute* attribute = inode->FindAttribute((const char*)_cookie); 2176 if (attribute == NULL) 2177 return B_ENTRY_NOT_FOUND; 2178 2179 fill_stat_buffer(volume, inode, attribute, *stat); 2180 return B_OK; 2181} 2182 2183 2184static status_t 2185cdda_write_attr_stat(fs_volume* _volume, fs_vnode* _node, void* cookie, 2186 const struct stat* stat, int statMask) 2187{ 2188 return EOPNOTSUPP; 2189} 2190 2191 2192static status_t 2193cdda_remove_attr(fs_volume* _volume, fs_vnode* _node, const char* name) 2194{ 2195 if (name == NULL) 2196 return B_BAD_VALUE; 2197 2198 Volume* volume = (Volume*)_volume->private_volume; 2199 Inode* inode = (Inode*)_node->private_node; 2200 2201 MutexLocker _(volume->Lock()); 2202 2203 status_t status = inode->RemoveAttribute(name, true); 2204 if (status == B_OK) { 2205 notify_attribute_changed(volume->ID(), -1, inode->ID(), name, 2206 B_ATTR_REMOVED); 2207 } 2208 2209 return status; 2210} 2211 2212 2213fs_volume_ops gCDDAVolumeOps = { 2214 cdda_unmount, 2215 cdda_read_fs_stat, 2216 cdda_write_fs_stat, 2217 cdda_sync, 2218 cdda_get_vnode, 2219 2220 // the other operations are not yet supported (indices, queries) 2221 NULL, 2222}; 2223 2224fs_vnode_ops gCDDAVnodeOps = { 2225 cdda_lookup, 2226 cdda_get_vnode_name, 2227 cdda_put_vnode, 2228 NULL, // fs_remove_vnode() 2229 2230 cdda_can_page, 2231 cdda_read_pages, 2232 cdda_write_pages, 2233 2234 NULL, // io() 2235 NULL, // cancel_io() 2236 2237 NULL, // get_file_map() 2238 2239 // common 2240 NULL, // fs_ioctl() 2241 NULL, // fs_set_flags() 2242 NULL, // fs_select() 2243 NULL, // fs_deselect() 2244 cdda_fsync, 2245 2246 NULL, // fs_read_link() 2247 NULL, // fs_symlink() 2248 NULL, // fs_link() 2249 NULL, // fs_unlink() 2250 cdda_rename, 2251 2252 NULL, // fs_access() 2253 cdda_read_stat, 2254 NULL, // fs_write_stat() 2255 NULL, // fs_preallocate() 2256 2257 // file 2258 NULL, // fs_create() 2259 cdda_open, 2260 cdda_close, 2261 cdda_free_cookie, 2262 cdda_read, 2263 NULL, // fs_write() 2264 2265 // directory 2266 NULL, // fs_create_dir() 2267 NULL, // fs_remove_dir() 2268 cdda_open_dir, 2269 cdda_close_dir, 2270 cdda_free_dir_cookie, 2271 cdda_read_dir, 2272 cdda_rewind_dir, 2273 2274 // attribute directory operations 2275 cdda_open_attr_dir, 2276 cdda_close_attr_dir, 2277 cdda_free_attr_dir_cookie, 2278 cdda_read_attr_dir, 2279 cdda_rewind_attr_dir, 2280 2281 // attribute operations 2282 cdda_create_attr, 2283 cdda_open_attr, 2284 cdda_close_attr, 2285 cdda_free_attr_cookie, 2286 cdda_read_attr, 2287 cdda_write_attr, 2288 2289 cdda_read_attr_stat, 2290 cdda_write_attr_stat, 2291 NULL, // fs_rename_attr() 2292 cdda_remove_attr, 2293 2294 NULL, // fs_create_special_node() 2295}; 2296 2297static file_system_module_info sCDDAFileSystem = { 2298 { 2299 "file_systems/cdda" B_CURRENT_FS_API_VERSION, 2300 0, 2301 NULL, 2302 }, 2303 2304 "cdda", // short_name 2305 "CDDA File System", // pretty_name 2306 0, // DDM flags 2307 2308 cdda_identify_partition, 2309 cdda_scan_partition, 2310 cdda_free_identify_partition_cookie, 2311 NULL, // free_partition_content_cookie() 2312 2313 cdda_mount, 2314 2315 // all other functions are not supported 2316 NULL, 2317}; 2318 2319module_info* modules[] = { 2320 (module_info*)&sCDDAFileSystem, 2321 NULL, 2322}; 2323