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Michael Piepers homepage | ||||
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BeOS Programs | ||||
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PalmBeach | ||||
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PSION Link Protocol description | ||||
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RFSV Protocol description | ||||
To indicate the command FSETEOF probably to the fact used over that; the file on a certain length to be shortened is. It must; the same File handle to be used, as with the instruction FOPEN one returned the delivery.
It is to be noted that; all values, which are more greater than 8 bits in reverse order will transfer. The LOW byte sent as the first over the line and only then follows the HIGH byte!
The instruction FSETEOF is as a consequence built into the PLP:
| Header | PLP | RFSV FSETEOF | Footer | CRC | |||
|---|---|---|---|---|---|---|---|
| 16 10 02 | 32 03 02 01 | Command 10 00 |
Size 06 00 |
File size d2 25 00 00 |
File handle 01 00 |
10 03 | 12 34 |
A valid response takes place with the command RESPONSE and returns the delivery an error code.
| Header | PLP | RFSV RESPONSE | Footer | CRC | ||
|---|---|---|---|---|---|---|
| 16 10 02 | 33 02 03 01 | Command 2a 00 |
Size 02 00 |
Result 00 00 |
10 03 | 12 34 |
The command FSETEOF consists of 4 information units. These have the following meanings:
| Length in byte | possible values | Meaning | |
|---|---|---|---|
| Command | 2 byte | 00 10 (fixed) | The command identifier has always the same value! |
| Size | 2 byte | 00 06 (fixed) | 2 byte in the command is always transmitted. |
| File size | 4 byte | variable | The file size is indicated in byte, on which the file is to be shortened. |
| File handle | 2 byte | variable | The File handle is to be transferred, with which the buffer is to be emptied. |
The command FSETEOF is answered with RESPONSE. This returns the delivery an error code as result. If 00 00 is returned the delivery, then no error occurred.
| Length in byte | possible values | Meaning | ||||
|---|---|---|---|---|---|---|
| Command | 2 byte | 00 2a (fixed) | The command identifier has always the same value! | |||
| Size | 2 byte | 00 02 (fixed) | Always 2 additional byte are supplied! | |||
| Result | 2 byte | variable | The result can obtain the following values:
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|
Michael Piepers homepage | ||||
|
BeOS Programs | ||||
|
PalmBeach | ||||
|
PSION Link Protocol description | ||||
|
RFSV Protocol description | ||||