Stefan Haubenthal: /* Reading and writing disk sectors */

2026-01-28T12:06:27Z

Reading and writing disk sectors

← Older revision		Revision as of 12:06, 28 January 2026
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	== Reading and writing disk sectors ==		== Reading and writing disk sectors ==

	The following code demonstrates how level-2 file access can be used in a TIC program. It copies a file, independent of the file format, by reading a sector and writing to a target file. Each sector is allocated when written.		The following code demonstrates how level-2 file access can be used in a [[TIC]] program. It copies a file, independent of the file format, by reading a sector and writing to a target file. Each sector is allocated when written.

	This sample code is certainly not the best way to copy files (wasting a lot of time by repeatedly and writing single sectors); it is only intended to illustrate the level-2 access.		This sample code is certainly not the best way to copy files (wasting a lot of time by repeatedly and writing single sectors); it is only intended to illustrate the level-2 access.

Mizapf: Created page with "== Reading and writing disk sectors == The following code demonstrates how level-2 file access can be used in a TIC program. It copies a file, independent of the file format, by..."

2011-11-05T23:25:52Z

Created page with "== Reading and writing disk sectors == The following code demonstrates how level-2 file access can be used in a TIC program. It copies a file, independent of the file format, by..."

New page

== Reading and writing disk sectors ==

The following code demonstrates how level-2 file access can be used in a TIC program. It copies a file, independent of the file format, by reading a sector and writing to a target file. Each sector is allocated when written.

This sample code is certainly not the best way to copy files (wasting a lot of time by repeatedly and writing single sectors); it is only intended to illustrate the level-2 access.

#include <stdio_h>
#include <stdlib_h>

main(argc, argv)
int argc; char *argv[];
{
int res, sect, i;
char rbuf[256];
int *ibuf;

if (argc<2)
{
printf("Syntax: filecopy <from_file> <to_file>\n");
return;
}

/* First we get the metadata */
res = bread(argv[1], 0, 0, rbuf);
check(res);

/* write the old metadata as new metadata */
res = bwrite(argv[2], 0, 0, rbuf);
check(res);

/* copy the file sector by sector */
ibuf = rbuf;
sect = ibuf[2];
for (i=0; i < sect; i++)
{
printf("Copying sector %d of %d\r", i+1, sect);
res = bread(argv[1], i, 1, rbuf);
check(res);
res = bwrite(argv[2], i, 1, rbuf);
check(res);
}
}

void check(code)
int code;
{
if (code != 0)
{
printf("Error, code = %d\n", code);
exit(7);
}
}

[[Category:Programming]]
[[Category:MDOS]]

Device access in TIC - Revision history

Stefan Haubenthal: /* Reading and writing disk sectors */

Mizapf: Created page with "== Reading and writing disk sectors == The following code demonstrates how level-2 file access can be used in a TIC program. It copies a file, independent of the file format, by..."