+void *silc_memdup(const void *ptr, size_t size)
+{
+ unsigned char *addr;
+
+ addr = silc_malloc(size + 1);
+ if (silc_unlikely(!addr)) {
+ silc_set_errno_nofail(SILC_ERR_OUT_OF_MEMORY);
+ return NULL;
+ }
+ memcpy((void *)addr, ptr, size);
+ addr[size] = '\0';
+ return (void *)addr;
+}
+
+char *silc_strdup(const char *str)
+{
+ return silc_memdup(str, strlen(str));
+}
+
+#endif /* !SILC_STACKTRACE */
+
+/* SilcStack aware routines */
+
+void *silc_smalloc(SilcStack stack, SilcUInt32 size)
+{
+ return stack ? silc_stack_malloc(stack, size) : silc_malloc(size);
+}
+
+void silc_sfree(SilcStack stack, void *ptr)
+{
+ if (stack) {
+#ifdef SILC_DEBUG
+ if (ptr)
+ *(unsigned char *)ptr = 'F';
+#endif /* SILC_DEBUG */
+ return;
+ }
+ silc_free(ptr);
+}
+
+void *silc_scalloc(SilcStack stack, SilcUInt32 items, SilcUInt32 size)
+{
+ unsigned char *addr;
+
+ if (!stack)
+ return silc_calloc(items, size);
+
+ addr = silc_stack_malloc(stack, items * size);
+ if (silc_unlikely(!addr))
+ return NULL;
+ memset(addr, 0, items * size);
+ return (void *)addr;
+}
+
+void *silc_srealloc(SilcStack stack, SilcUInt32 old_size,
+ void *ptr, SilcUInt32 size)
+{
+ void *new_ptr;
+
+ if (!stack)
+ return silc_realloc(ptr, size);
+
+ new_ptr = silc_stack_realloc(stack, old_size, ptr, size);
+ if (!new_ptr) {
+ new_ptr = silc_smalloc(stack, size);
+ if (!new_ptr)
+ return NULL;
+ memcpy(new_ptr, ptr, old_size > size ? size : old_size);
+ }
+
+ return new_ptr;
+}