shared: switch our hash table implementation over to SipHash

[elogind.git] / src / shared / util.h

diff --git a/src/shared/util.h b/src/shared/util.h
index 488ce3ba6dc27181449e2e3efa8bc556820276b2..338d79c7ac5822be36c0c1b312df422b1aeef1c6 100644 (file)
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -249,8 +249,19 @@ int make_stdio(int fd);
 int make_null_stdio(void);
 int make_console_stdio(void);
 
-unsigned long long random_ull(void);
-unsigned random_u(void);
+void random_bytes(void *p, size_t n);
+
+static inline uint64_t random_u64(void) {
+        uint64_t u;
+        random_bytes(&u, sizeof(u));
+        return u;
+}
+
+static inline uint32_t random_u32(void) {
+        uint32_t u;
+        random_bytes(&u, sizeof(u));
+        return u;
+}
 
 /* For basic lookup tables with strictly enumerated entries */
 #define __DEFINE_STRING_TABLE_LOOKUP(name,type,scope)                   \