kits/storage/ResourceFile.cpp

8 	\file ResourceFile.cpp
46 // recognized file types (indices into kFileTypeNames)
60 	"x86 resource file",
61 	"PPC resource file",
62 	"ELF object file",
63 	"FatELF object file",
64 	"PEF object file",
65 	"empty file",
79 read_exactly(BPositionIO& file, off_t position, void* buffer, size_t size,
82 	ssize_t read = file.ReadAt(position, buffer, size);
96 write_exactly(BPositionIO& file, off_t position, const void* buffer,
99 	ssize_t written = file.WriteAt(position, buffer, size);
241 ResourceFile::SetTo(BFile* file, bool clobber)
243 	status_t error = (file ? B_OK : B_BAD_VALUE);
247 			_InitFile(*file, clobber);
291 			// get the file size
294 				throw Exception(error, "Failed to get the file size.");
372 ResourceFile::_InitFile(BFile& file, bool clobber)
376 	// get the file size first
378 	error = file.GetSize(&fileSize);
380 		throw Exception(error, "Failed to get the file size.");
381 	// read the first four bytes, and check, if they identify a resource file
384 		read_exactly(file, 0, &magic, 4, "Failed to read magic number.");
386 		throw Exception(B_IO_ERROR, "File is not a resource file.");
388 		// empty file
391 		fFile.SetTo(&file, 0);
394 		// x86 resource file
397 		fFile.SetTo(&file, kX86ResourcesOffset);
401 		read_exactly(file, 0, &pefHeader, kPEFContainerHeaderSize,
404 			// PPC resource file
407 			fFile.SetTo(&file, kPPCResourcesOffset);
410 			// PEF file
412 			_InitPEFFile(file, pefHeader);
414 			throw Exception(B_IO_ERROR, "File is not a resource file.");
416 		// ELF file
418 		_InitELFFile(file);
421 		_InitFatELFFile(file);
423 		// x86 resource file with screwed magic?
425 //									"for x86 resource file. Try anyway.",
430 		fFile.SetTo(&file, kX86ResourcesOffset);
434 			// make it an x86 resource file
437 			fFile.SetTo(&file, 0);
439 			throw Exception(B_IO_ERROR, "File is not a resource file.");
443 		throw Exception(error, "Failed to initialize resource file.");
454 ResourceFile::_InitELFFile(BFile& file)
458 	// get the file size
460 	error = file.GetSize(&fileSize);
462 		throw Exception(error, "Failed to get the file size.");
466 	read_exactly(file, 0, identification, EI_NIDENT,
489 			_InitELFXFile<Elf32_Ehdr, Elf32_Phdr, Elf32_Shdr>(file, fileSize);
492 			_InitELFXFile<Elf64_Ehdr, Elf64_Phdr, Elf64_Shdr>(file, fileSize);
503 ResourceFile::_InitELFXFile(BFile& file, uint64 fileSize)
507 	read_exactly(file, 0, &fileHeader, sizeof(ElfHeader),
542 				"table exceeds file: %lu.",
555 		read_exactly(file, programHeaderTableOffset, programHeaders,
580 						"segment exceeds file: %lu.", segmentEnd);
600 				"table exceeds file: %lu.",
613 		read_exactly(file, sectionHeaderTableOffset, sectionHeaders,
629 			// SHT_NOBITS sections take no space in the file
638 						"section exceeds file: %lu.", sectionEnd);
648 		// not necessary to align the position of the resources in the file to
659 			throw Exception(B_IO_ERROR, "The ELF object file requires an "
666 //		throw Exception("The ELF object file does not contain resources.");
671 	// fine, init the offset file
672 	fFile.SetTo(&file, resourceOffset);
677 ResourceFile::_InitFatELFFile(BFile& file)
679 	// get the file size
681 	status_t error = file.GetSize(&fileSize);
683 		throw Exception(error, "Failed to get the file size.");
687 	read_exactly(file, 0, &fileHeader, sizeof(fileHeader),
698 	read_exactly(file, sizeof(FATELF_header), records,
718 	fFile.SetTo(&file, resourceOffset);
723 ResourceFile::_InitPEFFile(BFile& file, const PEFContainerHeader& pefHeader)
726 	// get the file size
728 	error = file.GetSize(&fileSize);
730 		throw Exception(error, "Failed to get the file size.");
733 		throw Exception(B_IO_ERROR, "PEF file architecture is not PPC.");
745 		read_exactly(file, shOffset, &sectionHeader, kPEFSectionHeaderSize,
758 				"exceeds file: %lu.", sectionEnd);
763 //		throw Exception("The PEF object file does not contain resources.");
767 	// init the offset file
768 	fFile.SetTo(&file, resourceOffset);
1069 					" sum: In file: %lx, calculated: %lx.", fileCheckSum,
1189 		// set the file size
1330 			BFile* file = fFile.File();
1331 			// make it an x86 resource file
1332 			error = file->SetSize(4);
1334 				throw Exception(error, "Failed to set file size.");
1335 			write_exactly(*file, 0, kX86ResourceFileMagic, 4,
1339 			fFile.SetTo(file, kX86ResourcesOffset);