1 files changed, 63 insertions, 0 deletions
diff --git a/lib/libc/stdlib/hcreate_r.c b/lib/libc/stdlib/hcreate_r.c
new file mode 100644
index 0000000..83e322a
--- /dev/null
+++ b/lib/libc/stdlib/hcreate_r.c
@@ -0,0 +1,63 @@
+/*-
+ * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <search.h>
+#include <stdlib.h>
+
+#include "hsearch.h"
+
+int
+hcreate_r(size_t nel, struct hsearch_data *htab)
+{
+	struct __hsearch *hsearch;
+
+	/*
+	 * Allocate a hash table object. Ignore the provided hint and start
+	 * off with a table of sixteen entries. In most cases this hint is
+	 * just a wild guess. Resizing the table dynamically if the use
+	 * increases a threshold does not affect the worst-case running time.
+	 */
+	hsearch = malloc(sizeof(*hsearch));
+	if (hsearch == NULL)
+		return 0;
+	hsearch->entries = calloc(16, sizeof(ENTRY));
+	if (hsearch->entries == NULL) {
+		free(hsearch);
+		return 0;
+	}
+
+	/*
+	 * Pick a random initialization for the FNV-1a hashing. This makes it
+	 * hard to come up with a fixed set of keys to force hash collisions.
+	 */
+	arc4random_buf(&hsearch->offset_basis, sizeof(hsearch->offset_basis));
+	hsearch->index_mask = 0xf;
+	hsearch->entries_used = 0;
+	htab->__hsearch = hsearch;
+	return 1;
+}