Porting current working set from CVS.

[pdclib.old] / platform / example / functions / _PDCLIB / open.c

diff --git a/platform/example/functions/_PDCLIB/open.c b/platform/example/functions/_PDCLIB/open.c
new file mode 100644 (file)
index 0000000..d3aafb2
--- /dev/null
+++ b/platform/example/functions/_PDCLIB/open.c
@@ -0,0 +1,47 @@
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* _PDCLIB_open( char const * const, int )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+/* This is an example implementation of _PDCLIB_open() fit for use with POSIX
+   kernels.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+#include <_PDCLIB_glue.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+_PDCLIB_fd_t _PDCLIB_open( char const * const filename, int mode )
+{
+    int osmode = 0;
+    if ( mode & _PDCLIB_FRW ) osmode |= O_RDWR;
+    if ( mode & ( _PDCLIB_FWRITE | _PDCLIB_FAPPEND ) ) osmode |= O_CREAT;
+    if ( mode & _PDCLIB_FWRITE ) osmode |= O_TRUNC;
+    if ( mode & _PDCLIB_FAPPEND ) osmode |= O_APPEND;
+    if ( ( mode & _PDCLIB_FREAD ) && ! ( mode & _PDCLIB_FRW ) ) osmode |= O_RDONLY;
+    return open( filename, osmode );
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    TESTCASE( NO_TESTDRIVER );
+    return TEST_RESULTS;
+}
+
+#endif