1 files changed, 25 insertions, 0 deletions
diff --git a/libbb/fclose_nonstdin.c b/libbb/fclose_nonstdin.c
new file mode 100644
index 0000000..6f3f373
--- /dev/null
+++ b/libbb/fclose_nonstdin.c
@@ -0,0 +1,25 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * fclose_nonstdin implementation for busybox
+ *
+ * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* A number of standard utilities can accept multiple command line args
+ * of '-' for stdin, according to SUSv3.  So we encapsulate the check
+ * here to save a little space.
+ */
+
+#include "libbb.h"
+
+int FAST_FUNC fclose_if_not_stdin(FILE *f)
+{
+	/* Some more paranoid applets want ferror() check too */
+	int r = ferror(f); /* NB: does NOT set errno! */
+	if (r) errno = EIO; /* so we'll help it */
+	if (f != stdin)
+		return (r | fclose(f)); /* fclose does set errno on error */
+	return r;
+}