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Kernel and Subsystems Technical Reference, Volume 2
KSVOLUME (Set Alarm Volume) ioctl
Purpose
Sets alarm volume.
Syntax
#include <sys/inputdd.h>int ioctl (FileDescriptor, KSVOLUME, Arg)
int FileDescriptor;
uint *Arg;
Description
The KSVOLUME ioctl subroutine call sets the alarm volume.
When keyboard diagnostics are enabled, the KSVOLUME ioctl subroutine call fails and sets the errno global variable to a value of EBUSY.
Parameters
| FileDescriptor |
Specifies the open file descriptor for the keyboard. |
| Arg |
Specifies an integer that contains one of the following values:
| #define KSAVOLOFF |
0 |
/*Turns off alarm.*/ |
| #define KSAVOLLOW |
1 |
/*Sets alarm to low volume.*/ |
| #define KSAVOLMED |
2 |
/*Sets alarm to medium volume*/ |
| #define KSAVOLHI |
3 |
/*Sets alarm to high volume.*/ |
|
Implementation Specifics
This ioctl subroutine call is part of Base Operating System (BOS) Runtime.
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