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886c1fae06
Many style/formatting edits. Bug fixes. Reverted some previous changes temporarily while reviewing new code. Merged Baker's "virtual device" in a simpler form. ODS2 will assign a sensible drive name when mounting /image (== /virtual). If a specific drive name is desired, mount /image drivename=filespec. Files can be quoted, or use set qualifier_style unix if slashes are a problem. Note that mount on the command line allows tab completion. Moved "statistics" command into show. Coded support for import/binary (fixed records, 512 bytes). Converted fgets to fgetline Added show devices for Unix (limited by standard APIs) Got rid of separate ODS2-Image build.
61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
/* Phyio.h V2.1 Definition of Physical I/O routines */
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/*
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This is part of ODS2 written by Paul Nankervis,
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email address: Paulnank@au1.ibm.com
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ODS2 is distributed freely for all members of the
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VMS community to use. However all derived works
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must maintain comments in their source to acknowledge
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the contibution of the original author.
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*/
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/* To set up physical I/O for a new system a group of phyio
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routines need to be set up. They are:-
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phyio_show() which doesn't need to do anything - but
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it would generally print some statistics
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about the other phyio calls.
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phyio_path() returns the full path of the supplied filnam.a The
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returned character string must be deallocated by the
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caller.
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phyio_init() to prepare a device for use by future
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read/write calls. The device name would usually
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map to a local device - for example rra: to /dev/rra
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on a Unix system. The call needs to return a handle
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(channel, file handle, reference number...) for
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future reference, and optionally some device
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information.
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phyio_done() makes a device unavailable.
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phyio_read() will return a specified number of bytes into a
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buffer from the start of a 512 byte block on the
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device referred to by the handle.
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phyio_write() will write a number of bytes out to a 512 byte block
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address on a device.
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*/
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#ifndef _PHYIO_H
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#define _PHYIO_H
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#include "device.h"
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#define PHYIO_READONLY 1
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typedef enum showtype {
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SHOW_STATS,
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SHOW_FILE64,
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SHOW_DEVICES
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} showtype_t;
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void phyio_show( showtype_t type );
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char *phyio_path( const char *filnam );
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unsigned phyio_init( struct DEV *dev );
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unsigned phyio_done( struct DEV *dev );
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unsigned phyio_read( struct DEV *dev, unsigned block, unsigned length,
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char *buffer );
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unsigned phyio_write( struct DEV *dev, unsigned block, unsigned length,
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const char *buffer );
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void phyio_help(FILE *fp );
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#endif /* #ifndef _PHYIO_H */
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