--- a/mdadm.h
+++ b/mdadm.h
@@ -33,6 +33,37 @@ extern __off64_t lseek64 __P ((int __fd,
 # endif
 #endif
 
+#ifdef UCLIBC
+# include <features.h>
+# if __UCLIBC_MINOR__ <= 9 && __UCLIBC_SUBLEVEL__ <= 30
+
+#include <errno.h>
+void *memalign(size_t blocksize, size_t bytes);
+static inline int posix_memalign(void **memptr, size_t alignment, size_t size)
+{
+	if (alignment % sizeof(void *) != 0)
+		return EINVAL;
+
+	*memptr = memalign(alignment, size);
+	return (*memptr != NULL ? 0 : ENOMEM);
+}
+
+#include <limits.h>
+char *strdup(const char *s);
+char *realpath(const char *path, char *resolved_path);
+static inline char *canonicalize_file_name(const char *path)
+{
+	char resolved[PATH_MAX] = { 0 };
+
+	if (!realpath(path, resolved))
+		return NULL;
+
+	return strdup(resolved);
+}
+
+# endif /* __UCLIBC_MINOR__ <= 9 && __UCLIBC_SUBLEVEL__ <= 30 */
+#endif /* UCLIBC */
+
 #include	<sys/types.h>
 #include	<sys/stat.h>
 #include	<stdlib.h>