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Purpose
Used to unlock all locks set previously by this station.
Arguments
Argument | Input/Output | Value |
CODE | Input | 20 |
| Output | unchanged |
BFS | Input | MFS name |
| Output | unchanged |
HANDLE | Input | null |
| Output | unchanged |
NAME | Input | null |
| Output | unchanged |
FMC | Input | null |
| Output | unchanged |
RECORD | Input | null |
| Output | unchanged |
STATUS | Input | 1 |
| Output | always returns true |
| Info |
|---|
| When this code is called, the system makes individual calls to all filing systems currently installed. The MFS should not attempt to pass this call to subsequent filing systems. Because this is a filing-system specific call, the BFS argument contains only the name of the current filing system. |
Called by
BASIC+ Unlock subroutine, or when exiting from the debugger
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Purpose
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Used the first time an MFS is loaded for the current session to provide the MFS with an opportunity to initialize any buffers, caches, files, or other system resources required by the filing system. If the INSTALL call returns successfully, the system loads the name of the MFS into the system list of current filing systems. The MFS name will remain in this list until logoff.
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Arguments
...
Argument
...
Input/Output
...
Value
...
CODE
...
Input
...
22
...
...
Output
...
unchanged
...
BFS
...
Input
...
MFS name
...
...
Output
...
unchanged
...
HANDLE
...
Input
...
null
...
...
Output
...
unchanged
...
NAME
...
Input
...
null
...
...
Output
...
unchanged
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FMC
...
Input
...
null
...
...
Output
...
unchanged
...
RECORD
...
Input
...
null
...
...
Output
...
unchanged
...
STATUS
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Input
...
number indicating the installation order of this MFS in the list of installed filing systems
...
...
Output
...
true if MFS is available
| Info |
|---|
When this code is called, the system makes individual calls to the current MFS only. The MFS should not attempt to pass this call to subsequent filing systems. Because this is a filing-system specific call, the BFS argument contains only the name of the current filing system.
|
| Info |
|---|
| If Status is set to false, the MFS will not be loaded into the list of currently available filing systems. |
RECORD.COUNT
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Purpose
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If supported by the BFS, used to return a record count for the file. The call is typically fulfilled within the filing system by reading a stored parameter.
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Arguments
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Argument
...
Input/Output
...
Value
...
CODE
...
Input
...
28
...
...
Output
...
unchanged
...
BFS
...
Input
...
BFS list
...
...
Output
...
unchanged
...
HANDLE
...
Input
...
file handle
...
...
Output
...
unchanged
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NAME
...
Input
...
null
...
...
Output
...
unchanged
...
FMC
...
Input
...
0
...
...
Output
...
record count
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RECORD
...
Input
...
null
...
...
Output
...
unchanged
...
STATUS
...
Input
...
0
...
...
Output
...
true if BFS is providing a record count in the FMC argument, false if the call is not supported by the BFS
| Info |
|---|
| This call was designed specifically for RTP57, which stores a record count as part of the file header. If the BFS does not support the call, a status of false is returned. In this case, processes that require a record count should execute a READNEXT loop to return a true record count. |
Called by | BASIC+ Get.RecCount function, or a direct call |
