1 files changed, 53 insertions, 0 deletions
diff --git a/compat/closefrom.h b/compat/closefrom.h
new file mode 100644
index 000000000000..b0545f352a8c
--- /dev/null
+++ b/compat/closefrom.h
@@ -0,0 +1,53 @@
+/*-
+ * Copyright (c) 2012 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $P4: //depot/projects/trustedbsd/openbsm/compat/closefrom.h#1 $
+ */
+
+#ifndef	_CLOSEFROM_H_
+#define	_CLOSEFROM_H_
+
+#include <unistd.h>
+
+static void
+closefrom(int lowfd)
+{
+	int error, fd, maxfd;
+
+	error = errno;
+
+	maxfd = sysconf(_SC_OPEN_MAX);
+	if (maxfd < 0)
+		maxfd = 16384;
+	for (fd = lowfd; fd <= maxfd; fd++)
+		(void)close(fd);
+
+	errno = error;
+}
+
+#endif /* !_CLOSEFROM_H_ */