+(* File type tests.
+ *
+ * Note these have to be on Linux ABI modes. We cannot use the
+ * OCaml (ie. host) equivalents here.
+ *)
+let rec file_type mask mode = Int64.logand mode 0o170000L = mask
+
+and is_socket mode = file_type 0o140000L mode
+and is_symlink mode = file_type 0o120000L mode
+and is_regular_file mode = file_type 0o100000L mode
+and is_block mode = file_type 0o060000L mode
+and is_directory mode = file_type 0o040000L mode
+and is_char mode = file_type 0o020000L mode
+and is_fifo mode = file_type 0o010000L mode
+
+and is_suid mode = test_bit 0o4000L mode
+and is_sgid mode = test_bit 0o2000L mode
+and is_svtx mode = test_bit 0o1000L mode
+
+and is_ru mode = test_bit 0o400L mode
+and is_wu mode = test_bit 0o200L mode
+and is_xu mode = test_bit 0o100L mode
+and is_rg mode = test_bit 0o040L mode
+and is_wg mode = test_bit 0o020L mode
+and is_xg mode = test_bit 0o010L mode
+and is_ro mode = test_bit 0o004L mode
+and is_wo mode = test_bit 0o002L mode
+and is_xo mode = test_bit 0o001L mode
+
+and test_bit mask mode = Int64.logand mode mask = mask
+
+let tmpdir () =
+ let chan = open_in "/dev/urandom" in
+ let data = String.create 16 in
+ really_input chan data 0 (String.length data);
+ close_in chan;
+ let data = Digest.to_hex (Digest.string data) in
+ (* Note this is secure, because if the name already exists, even as a
+ * symlink, mkdir(2) will fail.
+ *)
+ let tmpdir = Filename.temp_dir_name // sprintf "febootstrap%s.tmp" data in
+ Unix.mkdir tmpdir 0o700;
+ at_exit
+ (fun () ->
+ let cmd = sprintf "rm -rf %s" (Filename.quote tmpdir) in
+ ignore (Sys.command cmd));
+ tmpdir
+
+(* This would be so much simpler with ChriS's delimited
+ * overloading macro XXX
+ *)
+let i32_of_string_le v =
+ let b0 = int_of_char (String.unsafe_get v 0) in
+ let b1 = int_of_char (String.unsafe_get v 1) in
+ let b2 = int_of_char (String.unsafe_get v 2) in
+ let b3 = Int32.of_int (int_of_char (String.unsafe_get v 3)) in
+ Int32.logor
+ (Int32.of_int (b0 lor (b1 lsl 8) lor (b2 lsl 16)))
+ (Int32.shift_left b3 24)
+
+let i32_of_string_be v =
+ let b0 = Int32.of_int (int_of_char (String.unsafe_get v 0)) in
+ let b1 = int_of_char (String.unsafe_get v 1) in
+ let b2 = int_of_char (String.unsafe_get v 2) in
+ let b3 = int_of_char (String.unsafe_get v 3) in
+ Int32.logor
+ (Int32.of_int (b3 lor (b2 lsl 8) lor (b1 lsl 16)))
+ (Int32.shift_left b0 24)
+
+let i64_of_string_le v =
+ let b0 = int_of_char (String.unsafe_get v 0) in
+ let b1 = int_of_char (String.unsafe_get v 1) in
+ let b2 = int_of_char (String.unsafe_get v 2) in
+ let b3 = Int64.of_int (int_of_char (String.unsafe_get v 3)) in
+ let b4 = Int64.of_int (int_of_char (String.unsafe_get v 4)) in
+ let b5 = Int64.of_int (int_of_char (String.unsafe_get v 5)) in
+ let b6 = Int64.of_int (int_of_char (String.unsafe_get v 6)) in
+ let b7 = Int64.of_int (int_of_char (String.unsafe_get v 7)) in
+ Int64.logor
+ (Int64.logor
+ (Int64.logor
+ (Int64.logor
+ (Int64.logor
+ (Int64.of_int (b0 lor (b1 lsl 8) lor (b2 lsl 16)))
+ (Int64.shift_left b3 24))
+ (Int64.shift_left b4 32))
+ (Int64.shift_left b5 40))
+ (Int64.shift_left b6 48))
+ (Int64.shift_left b7 56)