1 files changed, 55 insertions, 0 deletions
diff --git a/lib/libc/gen/libc_interposing_table.c b/lib/libc/gen/libc_interposing_table.c
new file mode 100644
index 000000000000..025a67ac3eac
--- /dev/null
+++ b/lib/libc/gen/libc_interposing_table.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2014 The FreeBSD Foundation.
+ *
+ * Portions of this software were developed by Konstantin Belousov
+ * 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(s), this list of conditions and the following disclaimer as
+ *    the first lines of this file unmodified other than the possible
+ *    addition of one or more copyright notices.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice(s), 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 COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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.
+ */
+
+#include <sys/types.h>
+#include <stddef.h>
+#include "libc_private.h"
+
+#define	SLOT(a, b) \
+	[INTERPOS_##a] = (interpos_func_t)b
+interpos_func_t __libc_interposing[INTERPOS_MAX] = {
+	SLOT(system, __libc_system),
+	SLOT(tcdrain, __libc_tcdrain),
+	SLOT(_pthread_mutex_init_calloc_cb, _pthread_mutex_init_calloc_cb_stub),
+	SLOT(spinlock, __libc_spinlock_stub),
+	SLOT(spinunlock, __libc_spinunlock_stub),
+	SLOT(map_stacks_exec, __libc_map_stacks_exec),
+	SLOT(uexterr_gettext, __libc_uexterr_gettext),
+};
+#undef SLOT
+
+interpos_func_t *
+__libc_interposing_slot(int interposno)
+{
+	if (__libc_interposing[interposno] == NULL)
+		return (__libsys_interposing_slot(interposno));
+	return (&__libc_interposing[interposno]);
+}