update,

task1/provided/rbuoy.h

@@ -0,0 +1,42 @@
+#ifndef RSYNC_H
+#define RSYNC_H
+
+#include <stdlib.h>
+#include <stdint.h>
+
+
+// Sizes (in bytes) of various fields.
+#define MAGIC_SIZE        4
+#define NUM_RECORDS_SIZE  1
+#define PATHNAME_LEN_SIZE 2
+#define NUM_BLOCKS_SIZE   3
+#define HASH_SIZE         8
+#define MODE_SIZE         10
+#define FILE_SIZE_SIZE    4
+#define BLOCK_INDEX_SIZE  3
+#define UPDATE_LEN_SIZE   2
+
+#define MATCH_BYTE_BITS   8
+
+// Note that the rbuoy index magic numbers are exactly 4 bytes, and so
+// don't include the nul-terminator implicit at the end of these strings.
+#define TYPE_A_MAGIC "TABI"
+#define TYPE_B_MAGIC "TBBI"
+#define TYPE_C_MAGIC "TCBI"
+
+// The maximum size of a block (the trailing block of a file might be smaller).
+#define BLOCK_SIZE 256
+
+// rbuoy.c
+void stage_1(char *out_pathname, char *in_pathnames[], size_t num_in_pathnames);
+void stage_2(char *out_pathname, char *in_pathname);
+void stage_3(char *out_pathname, char *in_pathname);
+void stage_4(char *in_pathname);
+
+// rbuoy_provided.c
+uint64_t hash_block(char block[], size_t block_size);
+size_t number_of_blocks_in_file(size_t num_bytes);
+size_t num_tbbi_match_bytes(size_t num_blocks);
+
+
+#endif /* RSYNC_H */