Guardian Native C Library Calls Reference Manual (G06.28+, H06.04+)

freopen(3) Guardian Native C Library Calls Reference Manual
NAME
freopen - Opens a stream
LIBRARY
G-series native Guardian processes: $SYSTEM.SYSnn.ZCRTLSRL
G-series native OSS processes: /G/system/sysnn/zcrtlsrl
H-series native Guardian processes: $SYSTEM.ZDLLnnn.ZCRTLDLL
H-series OSS processes: /G/system/zdllnnn/zcrtldll
DESCRIPTION
The C run-time library supports two variants of the freopen() function: freopen_oss() and
freopen_guardian(). The variants support the unique file naming conventions and structures of
the OSS and Guardian file systems, respectively.
The header file maps calls to freopen( ) to the variant that matches the target compilation
environment. The target environment is set with the systype pragma.
Explicit calls to the freopen_oss() and freopen_guardian() variants in source code are only
made when the behavior of one environment is desired from the other environment.
For a description of the freopen( ) OSS function and the freopen_oss() function, refer to the
freopen_oss(3) reference page. For a description of the freopen( ) Guardian function and the
freopen_guardian() function, refer to the freopen_guardian(3) reference page.
2−58 Hewlett-Packard Company 527192-005