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_sys_open()
Defined in rt_sys.h, the _sys_open()
function opens a file.
Syntax
FILEHANDLE _sys_open(const char
*name
,int
openmode
);
Usage
The _sys_open()
function is required
by fopen()
and freopen()
.
These functions in turn are required if any file input/output function
is to be used.
The openmode
parameter is a bitmap whose bits
mostly correspond directly to the ISO mode specification. Target-dependent
extensions are possible, but freopen()
must
also be extended.
Returns
The return value is –1
if an error occurs.