Guardian Procedure Calls Reference Manual (G06.25+)

Guardian Procedure Calls (F)
Guardian Procedure Calls Reference Manual—522629-013
5-124
FILE_OPEN_ Procedure
Table 5-7. Exclusion and Access Mode Checking
008CDT .CDD
Open
attempted
with:
File currently open with:
Shared
Read/
Write
Read
Only
Write
Only
Exclusive
Read/
Write
Read
Only
Write
Only
Protected
Read/
Write
Read
Only
Write
Only
Read/
Write
Read
Only
Write
Only
Read/
Write
Read
Only
Write
Only
Read/
Write
Read
Only
Write
Only
Exclusive
Protected
File
Closed
Shared
Access
Mode
Exclusion
Mode
= Open Successful
Legend
= Open Fails
Always Fails
Note: When a program file is running, it is opened
with the equivalent of protected, read-only access.