add int64 type to uint64.h

add io.h as per http://cr.yp.to/lib/io.html

io.h

@@ -0,0 +1,61 @@
+#ifndef IO_H
+#define IO_H
+
+/* http://cr.yp.to/lib/io.html */
+
+#include "uint64.h"
+#include "tai.h"
+
+/* like open(s,O_RDONLY) */
+int io_readfile(int64* d,const char* s);
+/* like open(s,O_WRONLY|O_TRUNC,0600) */
+int io_createfile(int64* d,const char* s);
+/* like pipe(d) */
+int io_pipe(int64* d);
+
+/* non-blocking read(), -1 for EAGAIN and -3+errno for other errors */
+int64 io_tryread(int64 d,char* buf,int64 len);
+
+/* blocking read(), with -3 instead of -1 for errors */
+int64 io_waitread(int64 d,char* buf,int64 len);
+
+/* non-blocking write(), -1 for EAGAIN and -3+errno for other errors */
+int64 io_trywrite(int64 d,const char* buf,int64 len);
+
+/* blocking write(), with -3 instead of -1 for errors */
+int64 io_waitwrite(int64 d,const char* buf,int64 len);
+
+/* modify timeout attribute of file descriptor */
+void io_timeout(int64 d,struct taia t);
+
+/* like io_tryread but will return -2,errno=ETIMEDOUT if d has a timeout
+ * associated and it is passed without input being there */
+int64 io_tryreadtimeout(int64 d,char* buf,int64 len);
+
+/* like io_trywrite but will return -2,errno=ETIMEDOUT if d has a timeout
+ * associated and it is passed without being able to write */
+int64 io_trywritetimeout(int64 d,const char* buf,int64 len);
+
+void io_wantread(int64 d);
+void io_wantwrite(int64 d);
+void io_dontwantread(int64 d);
+void io_dontwantwrite(int64 d);
+
+void io_wait();
+void io_waituntil(struct taia t);
+void io_check();
+
+/* return next descriptor from io_wait that can be read from */
+int64 io_canread();
+/* return next descriptor from io_wait that can be written to */
+int64 io_canwrite();
+
+/* put d on internal data structure, return 1 on success, 0 on error */
+int io_fd(int64 d);
+
+/* put descriptor in non-blocking mode */
+void io_nonblock(int64 d);
+/* put descriptor in close-on-exec mode */
+void io_closeonexec(int64 d);
+
+#endif

uint64.h

@@ -2,5 +2,6 @@
 #define UINT64_H
 
 typedef unsigned long long uint64;
+typedef signed long long int64;
 
 #endif