_EDC_OPEN_CONCAT
Enables users to control if the C library can recognize that a data set is concatenated or not on fopen().
By default, a concatenated data set can only be recognized when
it is opened by DDNAME, but it cannot be recognized when it is opened
by the data set name. The acceptable value for the _EDC_OPEN_CONCAT
environment variable is:
- Value
- Description
- 1
- The C library is able to recognize that the data set is concatenated or not when it is opened by the data set name. With this setting, repositioning operations upon a GDG data set opened by its base name will be based on the beginning of the GDG base.
The _EDC_OPEN_CONCAT environment variable can be set with the following
function:
setenv("_EDC_OPEN_CONCAT","1",1);