65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* Copyright 2005-2007, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
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* All rights reserved. Distributed under the terms of the MIT License.
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*/
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#ifndef _BOOT_REMOTE_DISK_DEFS_H
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#define _BOOT_REMOTE_DISK_DEFS_H
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#include <inttypes.h>
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enum {
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REMOTE_DISK_SERVER_PORT = 8765,
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REMOTE_DISK_BLOCK_SIZE = 1024,
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};
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enum {
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// requests
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REMOTE_DISK_HELLO_REQUEST = 0,
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// port: client port
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REMOTE_DISK_READ_REQUEST = 1,
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// port: client port
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// offset: byte offset of data to read
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// size: number of bytes to read (server might serve more, though)
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REMOTE_DISK_WRITE_REQUEST = 2,
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// port: client port
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// offset: byte offset of data to write
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// size: number of bytes to write
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// data: the data
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// replies
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REMOTE_DISK_HELLO_REPLY = 3,
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// offset: disk size
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REMOTE_DISK_READ_REPLY = 4, // port unused
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// offset: byte offset of read data
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// size: number of bytes of data read; < 0 => error
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// data: read data
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REMOTE_DISK_WRITE_REPLY = 5, // port, data unused
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// offset: byte offset of data written
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// size: number of bytes of data written; < 0 => error
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};
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// errors
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enum {
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REMOTE_DISK_IO_ERROR = -1,
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REMOTE_DISK_BAD_REQUEST = -2,
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};
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struct remote_disk_header {
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uint64_t offset;
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uint64_t request_id;
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int16_t size;
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uint16_t port;
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uint8_t command;
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uint8_t data[0];
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} __attribute__ ((__packed__));
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#endif // _BOOT_REMOTE_DISK_DEFS_H
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