e5f27b44b5
As a preparatory step for introducing the new block-client API, we have to turn the 'Block::Connection' into a class template. The template argument will be used to tie an application-defined job type to the block connection. Issue #3283
90 lines
2.2 KiB
C++
90 lines
2.2 KiB
C++
/*
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* \brief ISO interface to session server
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* \author Sebastian Sumpf <Sebastian.Sumpf@genode-labs.com>
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* \date 2010-07-26
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*/
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/*
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* Copyright (C) 2010-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <base/stdint.h>
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#include <block_session/connection.h>
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namespace Iso {
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/*
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* Exceptions
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*/
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class Io_error : public Genode::Exception { };
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class Non_data_disc : public Genode::Exception { };
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class File_not_found : public Genode::Exception { };
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/* enable/disable debugging output */
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const int verbose = 0;
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enum {
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PATH_LENGTH = 128, /* max. length of a path */
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LEVEL_LENGTH = 32, /* max. length of a level of a path */
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PAGE_SIZE = 4096,
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};
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class File_info
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{
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private:
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Genode::uint32_t _blk_nr;
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Genode::size_t _size;
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public:
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File_info(Genode::uint32_t blk_nr, Genode::size_t size)
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: _blk_nr(blk_nr), _size(size) {}
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Genode::uint32_t blk_nr() { return _blk_nr; }
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Genode::size_t size() { return _size; }
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Genode::size_t page_sized() { return (_size + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1); }
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};
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/*******************
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** Iso interface **
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*******************/
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/**
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* Retrieve file information
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*
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* \param alloc allocator used for File_info object
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* \param block Block session used to read sectors from ISO
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* \param path absolute path of the file (slash separated)
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*
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* \throw File_not_found
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* \throw Io_error
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* \throw Non_data_disc
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*
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* \return Pointer to File_info class
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*/
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File_info *file_info(Genode::Allocator &alloc, Block::Connection<> &block, char const *path);
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/**
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* Read data from ISO
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*
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* \param block Block session used to read sectors from ISO
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* \param info File Info of file to read the data from
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* \param file_offset Offset in file
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* \param length Number of bytes to read
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* \param buf Output buffer
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*
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* \throw Io_error
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*
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* \return Number of bytes read
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*/
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unsigned long read_file(Block::Connection<> &block, File_info *info, Genode::off_t file_offset,
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Genode::uint32_t length, void *buf);
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} /* namespace Iso */
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