Function

f_setfl invokes the fcntl callable service to set file status flags.

Parameters

fd

The file descriptor (a number) for the file.

flags

A value that sets the file status flags. To specify the information, you can specify a numeric value (see REXX predefined variables) or a predefined variable beginning with O_ used to derive the appropriate numeric value. The permitted values are:

Variable	Description
O_APPEND	Set offset to EOF on write.
O_NONBLOCK	Do not block an open, a read, or a write on the file (do not wait for terminal input).
O_SYNC	Force synchronous updates.