Activates paging or swapping to a designated block device.
Standard C Library (libc.a)
int swapon (PathName) char *PathName;
The swapon subroutine makes the designated block device available to the system for allocation for paging and swapping.
The specified block device must be a logical volume on a disk device. The paging space size is determined from the current size of the logical volume.
|PathName||Specifies the full path name of the block device.|
If an error occurs, the errno global variable is set to indicate the error:
|EINTR||Signal was received during processing of a request.|
|EINVAL||Invalid argument (size of device is invalid).|
|ENOENT||The PathName file does not exist.|
|ENOMEM||The maximum number of paging space devices (16) are already defined, or no memory is available.|
|ENOTBLK||Block device required.|
|ENOTDIR||A component of the PathName prefix is not a directory.|
|ENXIO||No such device address.|
Other errors are from calls to the device driver's open subroutine or ioctl subroutine.
This subroutine is part of Base Operating System (BOS) Runtime.
The swapqry subroutine.
The swapon command.
The Subroutines Overview in AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs.