import newlib-2000-02-17 snapshot

1 files changed, 82 insertions, 0 deletions

diff --git a/newlib/libc/stdio/fclose.c b/newlib/libc/stdio/fclose.c
new file mode 100644
index 000000000..3266d8a55
--- /dev/null
+++ b/newlib/libc/stdio/fclose.c
@@ -0,0 +1,82 @@
+/*
+FUNCTION
+<<fclose>>---close a file
+
+INDEX
+	fclose
+
+ANSI_SYNOPSIS
+	#include <stdio.h>
+	int fclose(FILE *<[fp]>);
+
+TRAD_SYNOPSIS
+	#include <stdio.h>
+	int fclose(<[fp]>)
+	FILE *<[fp]>;
+
+DESCRIPTION
+If the file or stream identified by <[fp]> is open, <<fclose>> closes
+it, after first ensuring that any pending data is written (by calling
+<<fflush(<[fp]>)>>).
+
+RETURNS
+<<fclose>> returns <<0>> if successful (including when <[fp]> is
+<<NULL>> or not an open file); otherwise, it returns <<EOF>>.
+
+PORTABILITY
+<<fclose>> is required by ANSI C.
+
+Required OS subroutines: <<close>>, <<fstat>>, <<isatty>>, <<lseek>>,
+<<read>>, <<sbrk>>, <<write>>.
+*/
+
+/*
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Close a file.
+ */
+
+int
+_DEFUN (fclose, (fp),
+	register FILE * fp)
+{
+  int r;
+
+  if (fp == NULL)
+    return (0);			/* on NULL */
+
+  CHECK_INIT (fp);
+
+  if (fp->_flags == 0)		/* not open! */
+    return (0);
+  r = fp->_flags & __SWR ? fflush (fp) : 0;
+  if (fp->_close != NULL && (*fp->_close) (fp->_cookie) < 0)
+    r = EOF;
+  if (fp->_flags & __SMBF)
+    _free_r (fp->_data, (char *) fp->_bf._base);
+  if (HASUB (fp))
+    FREEUB (fp);
+  if (HASLB (fp))
+    FREELB (fp);
+  fp->_flags = 0;		/* release this FILE for reuse */
+  return (r);
+}