From f05c09fac82907ed0f05adaffe10c3832a245297 Mon Sep 17 00:00:00 2001
From: sin
Date: Tue, 24 Feb 2015 19:04:02 +0000
Subject: Add realpath() check

---
 include/stdlib.h | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 include/stdlib.h

(limited to 'include')

diff --git a/include/stdlib.h b/include/stdlib.h
new file mode 100644
index 0000000..2948b54
--- /dev/null
+++ b/include/stdlib.h
@@ -0,0 +1,35 @@
+#ifndef FORTIFY_STDLIB_H_
+#define FORTIFY_STDLIB_H_
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
+ || defined(_BSD_SOURCE)
+#include_next <limits.h>
+#endif
+
+#include_next <stdlib.h>
+
+#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
+ || defined(_BSD_SOURCE)
+static inline __attribute__ ((always_inline))
+char *
+__fortify_realpath(const char *path, char *resolved)
+{
+	size_t bos;
+
+	if (resolved) {
+		bos = __builtin_object_size(resolved, 0);
+		if (PATH_MAX > bos)
+			__builtin_trap();
+	}
+	return realpath(path, resolved);
+}
+
+#undef realpath
+#define realpath(path, resolved) __fortify_realpath(path, resolved)
+#endif
+
+#endif
+
+#endif
-- 
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