Open System Services System Calls Reference Manual (G06.25+, H06.03+)

System Functions (s and S) select(2)
RELATED INFORMATION
Functions: fcntl(2), read(2), write(2).
STANDARDS CONFORMANCE
The HP implementation does not support use of this function on terminal device
files.
HP extensions to the XPG4 Version 2 specification are:
• The errno value [ENOTSUP] can be returned for a call that attempts to select a terminal
device file.
• The errno value [ENETDOWN] can be returned.
• The time interval specified by the timeout parameter must meet these criteria:
— The maximum interval is 2**31 seconds plus 2**31 microseconds. If a value
greater than this is specified, the maximum is used instead.
— If a specified interval is not a whole multiple of 10 milliseconds, the next highest
whole multiple is used instead.
527186-003 Hewlett-Packard Company 7−9