IOCTL_SYSENV_GET_VARIABLE IOCTL (ntddsysenv.h)
Gets the value of the specified system environment variables using SysEnv device.
Major code
Input buffer
A pointer to a SYSENV_VARIABLE structure that specifies the variable..
Input buffer length
The size of the SYSENV_VARIABLE structure.
Output buffer
A pointer to a SYSENV_VALUE structure that receives the value of the variable.
Output buffer length
The size of the SYSENV_VALUE structure.
Status block
Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddsysenv.h |
See also
Creating IOCTL Requests in Drivers
WdfIoTargetSendInternalIoctlOthersSynchronously