AtaPortRegistryChannelSubkeyWrite function (irb.h)
The AtaPortRegistryChannelSubKeyWrite routine writes data to the indicated value name under the registry key HKLM\CurrentControlSet\Services\<service name>\ControllerN\ChannelM, where N is the number of the controller and M is the number of the channel.
Syntax
BOOLEAN AtaPortRegistryChannelSubkeyWrite(
[in] PVOID ChannelExtension,
[in] UCHAR ControllerNumber,
[in] PCHAR ValueName,
[in] UCHAR ValueType,
[in] PUCHAR Buffer,
PULONG BufferLength
);
Parameters
[in] ChannelExtension
A pointer to the channel extension.
[in] ControllerNumber
Contains the controller number.
[in] ValueName
Contains the name of the registry value to write to.
[in] ValueType
Indicates the type of data that is contained in the registry value. This member should be assigned one of values indicated in the following table.
| Value | Meaning |
|---|---|
| IDE_REG_DWORD | A 4-byte numeric value. |
| IDE_REG_BINARY | Binary data. |
| IDE_REG_SZ | A null-terminated, Unicode string. |
[in] Buffer
A pointer to the source buffer that contains the data to be written to the registry.
BufferLength
A pointer to the number of bytes of data to copy. If the operation fails, the location that is pointed to by Length will update to the length of data that was successfully written to the registry.
Return value
AtaPortRegistryChannelSubKeyWrite returns TRUE if the operation succeeds. Otherwise, it returns FALSE. The routine also returns FALSE if the miniport driver does not call it from the correct routine.
Remarks
If the value name is not present, AtaPortRegistryChannelSubKeyWrite creates an entry for the value and the data is stored in the newly created value.
The buffer that is pointed to by Buffer must be allocated by using AtaPortRegistryAllocateBuffer.
The miniport driver must call AtaPortRegistryChannelSubKeyWrite either during the AtaChannelInitRoutine routine or the IdeHwControl routine The miniport driver cannot call AtaPortRegistryChannelSubKeyWrite from any other routine without returning FALSE. Additionally, the miniport driver can only call AtaPortRegistryChannelSubKeyWrite from its IdeHwControl routine if its IdeHwControl routine was called and had a value of either StartChannel or StopChannel in its ControlAction parameter.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | irb.h (include Ata.h, Irb.h) |
See also
AtaPortRegistryChannelSubKeyRead