Data Queue APIs--Categories - FTP Directory Listing - IBM

Change User Space Attributes (QUSCUSAT) API
Field Descriptions
Data. The value to which a specific user space attribute is to be changed. All values are validity checked.
Key. The user space attribute to be changed. Only specific attributes can be changed. Refer to Keys for
more information.
Length of data. The length of the new user space attribute value. The length of data field is used to get
addressability to the next attribute record.
Keys
The following table lists the keys that can be used in the attribute record.
Key Type Attribute
1 BINARY(4) Space size
2 CHAR(1) Initial value
3 CHAR(1) Automatic extendibility
4 BINARY(4) Transfer size request
Field Descriptions
Automatic extendibility. Whether or not the user space is automatically extended by the system when the
end of the space is encountered.
0
The user space is not automatically extendible.
1
The user space is automatically extendible.
Initial value. The initial value to which future extensions of the user space will be set. You will achieve
the best performance if you set this byte to hexadecimal zeros (X'00').
Space size. The size in bytes of the user space object. If this value is smaller than the current size of the
space, the user space is truncated. If it is larger, the space is extended.
Transfer size request. The number of pages to be transferred between main storage and auxiliary storage.
This is only a request, as the machine may use a value of its choice in some circumstances. Allowable
values range between 0 and 32 pages. A value of 0 is an indication that the machine should use the default
transfer size for the user space. A larger transfer size may allow for better performance of applications
processing the user space.
Error Messages
CPF24B4 E
Severe error while addressing parameter list.
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