Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
FMASK
Control Block Contents
FMASK DSECT
Cross Reference (Contains links to field and bit definitions)
FMASK Prolog
NAME : HCPFCWDS DESCRIPTION: File Mask Equates DSECT : FMASK
FMASK Control Block Content
FMASK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure FMASK File Mask Equates 0000 0 Bitstring 1 FMBYTE The file mask 11.. .... FMWRITES X'C0' Bits that control writes 1... .... FMUWRITE X'80' Allow update writes ..1. .11. FMMUSTB0 X'26' These bits must be 0 for ECKD devices ..11 1111 FMMB0FBA X'3F' These bits must be 0 for FBA devices ...1 .... FMSEEKNA X'10' When the bit is one, SEEK and Multitrack disallowed
FMASK Storage Layout
*** FMASK - File Mask Equates * * +------+ * 0 |FMBYTE| 1 * +------+ * *** FMASK - File Mask Equates
FMASK Cross Reference
Symbol Dspl Value -------------- ---- ----- FMBYTE 0000 FMMB0FBA 0000 3F FMMUSTB0 0000 26 FMSEEKNA 0000 10 FMUWRITE 0000 80 FMWRITES 0000 C0
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