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-rw-r--r--libc/stdio/fclose.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/libc/stdio/fclose.c b/libc/stdio/fclose.c
new file mode 100644
index 000000000..4df2e4229
--- /dev/null
+++ b/libc/stdio/fclose.c
@@ -0,0 +1,86 @@
+/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ *
+ * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
+ */
+
+#include "_stdio.h"
+
+int fclose(register FILE *stream)
+{
+ int rv = 0;
+ __STDIO_AUTO_THREADLOCK_VAR;
+
+ /* First, remove the file from the open file list. */
+#ifdef __STDIO_HAS_OPENLIST
+ {
+ register FILE *ptr;
+
+ __STDIO_THREADLOCK_OPENLIST;
+ if ((ptr = _stdio_openlist) == stream) {
+ _stdio_openlist = stream->__nextopen;
+ } else {
+ while (ptr) {
+ if (ptr->__nextopen == stream) {
+ ptr->__nextopen = stream->__nextopen;
+ break;
+ }
+ ptr = ptr->__nextopen;
+ }
+ }
+ __STDIO_THREADUNLOCK_OPENLIST;
+
+ if (!ptr) { /* Did not find stream in the open file list! */
+ return EOF;
+ }
+ }
+#endif
+
+ __STDIO_AUTO_THREADLOCK(stream);
+
+ __STDIO_STREAM_VALIDATE(stream);
+
+#ifdef __STDIO_BUFFERS
+ /* Write any pending buffered chars. */
+ if (__STDIO_STREAM_IS_WRITING(stream)) {
+ rv = __fflush_unlocked(stream);
+ }
+#endif
+
+ if (__CLOSE(stream) < 0) { /* Must close even if fflush failed. */
+ rv = EOF;
+ }
+
+ stream->__filedes = -1;
+
+ /* We need a way for freopen to know that a file has been closed.
+ * Since a file can't be both readonly and writeonly, that makes
+ * an effective signal. It also has the benefit of disabling
+ * transitions to either reading or writing. */
+ stream->__modeflags &= (__FLAG_FREEBUF|__FLAG_FREEFILE);
+ stream->__modeflags |= (__FLAG_READONLY|__FLAG_WRITEONLY);
+
+#ifndef NDEBUG
+ __STDIO_STREAM_RESET_GCS(stream);
+
+ /* Reinitialize everything (including putc since fflush could fail). */
+ __STDIO_STREAM_DISABLE_GETC(stream);
+ __STDIO_STREAM_DISABLE_PUTC(stream);
+ __STDIO_STREAM_INIT_BUFREAD_BUFPOS(stream);
+
+# ifdef __UCLIBC_HAS_WCHAR__
+ stream->__ungot_width[0] = 0;
+# endif
+# ifdef __STDIO_MBSTATE
+ __INIT_MBSTATE(&(stream->__state));
+# endif
+#endif
+
+ __STDIO_AUTO_THREADUNLOCK(stream);
+
+ __STDIO_STREAM_FREE_BUFFER(stream);
+ __STDIO_STREAM_FREE_FILE(stream);
+
+ return rv;
+}