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c6958e1660
General code cleanup/refactoring. Added header comments. Added "use image size" parameter for MSCP disks -- block count derived from image file size rather than DEC drive geometry; allows for arbitrarily large disks (up to 2TB, theoretically.)
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/* storagedrive.hpp: disk or tape drive, with an image file as storage medium.
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Copyright (c) 2018, Joerg Hoppe
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j_hoppe@t-online.de, www.retrocmp.com
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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JOERG HOPPE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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12-nov-2018 JH entered beta phase
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*/
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#ifndef _STORAGEDRIVE_HPP_
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#define _STORAGEDRIVE_HPP_
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using namespace std;
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#include <stdint.h>
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#include <string>
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#include <fstream>
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#include "utils.hpp"
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#include "device.hpp"
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#include "parameter.hpp"
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class storagecontroller_c;
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class storagedrive_c: public device_c {
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private:
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fstream f; // image file
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public:
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storagecontroller_c *controller; // link to parent
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// identifying number at controller
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parameter_unsigned_c unitno = parameter_unsigned_c(this, "unit", "unit", /*readonly*/
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true, "", "%d", "Unit # of drive", 3, 10); // 3 bits = 0..7 allowed
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// capacity of medium (disk/tape) in bytes
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parameter_unsigned64_c capacity = parameter_unsigned64_c(this, "capacity",
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"cap", /*readonly*/
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true, "byte", "%d", "Storage capacity", 64, 10);
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parameter_string_c image_filepath = parameter_string_c(this, "image", "img", /*readonly*/
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false, "Path to image file");
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virtual bool on_param_changed(parameter_c *param) override;
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// parameter_bool_c writeprotect = parameter_bool_c(this, "writeprotect", "wp", /*readonly*/false, "Medium is write protected, different reasons") ;
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bool file_readonly;
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bool file_open(std::string imagefname, bool create);
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bool file_is_open(void);
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void file_read(uint8_t *buffer, uint64_t position, unsigned len);
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void file_write(uint8_t *buffer, uint64_t position, unsigned len);
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uint64_t file_size(void);
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void file_close(void);
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storagedrive_c(storagecontroller_c *controller);
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};
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#endif
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