File Utility Programming (FUP) Reference Manual

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FUP Commands

File Utility Program (FUP) Reference Manual—523323-015

2-8

ALLOCATE Examples

ENSCRIBE

TYPE U

FORMAT 1

EXT ( 2 PAGES, 2 PAGES )

MAXEXTENTS 16

BUFFERSIZE 4096

OWNER 8,44

SECURITY (RWEP): NUNU

DATA MODIF: 14 April 2001, 08:59

CREATION DATE: 14 April 2001, 08:59

LAST OPEN: NEVER OPENED

EOF 0 (0.0 % USED)

FILE LABEL: 214 (5.2 % USED)

EXTENTS ALLOCATED: 0

This display indicates it is a DP2 file because:



The listing includes the MAXEXTENTS, BUFFERSIZE, CREATION DATE, and

LAST OPEN attributes.



The extent size for YRFILE is not the one page (2,048 bytes) FUP default.

During the file-creation process, DP2 rounds up the extent size (to 2 pages or

4,096 bytes) because the extent size of DP2 files must always be an integral

multiple of the BUFFERSIZE (for unstructured files) or of the BLOCK size (for

structured files).

To create an unstructured DP2 file with one-page extents, you must specify a

BUFFERSIZE of 2048 bytes with either the FUP SET or FUP CREATE command.

3. Allocate 10 file extents for YRFILE:

-ALLOCATE YRFILE, 10

4. Use the FUP INFO YRFILE, DETAIL command to see that the extents are now

allocated:

$BOOKS1.COMLANG.YRFILE 14 April 2001, 09:05