struct fileio: improve member types

Add const keyword to file url and cast to free().

Make size an ssize_t and chase all format strings that use it.

src/flash/flash.c

@@ -847,7 +847,7 @@ COMMAND_HANDLER(handle_flash_write_bank_command)
 
 	if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 	{
-		command_print(cmd_ctx, "wrote %lld byte from file %s to flash bank %u"
+		command_print(cmd_ctx, "wrote %zu byte from file %s to flash bank %u"
 				" at offset 0x%8.8" PRIx32 " in %fs (%0.3f kb/s)",
 				fileio.size, args[1], p->bank_number, offset,
 				duration_elapsed(&bench), duration_kbps(&bench, fileio.size));

src/flash/mflash.c

@@ -750,7 +750,7 @@ COMMAND_HANDLER(mg_write_cmd)
 
 	if (duration_measure(&bench) == ERROR_OK)
 	{
-		command_print(cmd_ctx, "wrote %lli byte from file %s "
+		command_print(cmd_ctx, "wrote %zu byte from file %s "
 				"in %fs (%0.3f kB/s)", fileio.size, args[1],
 				duration_elapsed(&bench), duration_kbps(&bench, fileio.size));
 	}

src/flash/nand.c

@@ -1637,7 +1637,7 @@ COMMAND_HANDLER(handle_nand_dump_command)
 
 	if (nand_fileio_finish(&s) == ERROR_OK)
 	{
-		command_print(cmd_ctx, "dumped %lld byte in %fs (%0.3f kb/s)", 
+		command_print(cmd_ctx, "dumped %zu bytes in %fs (%0.3f kb/s)", 
 				s.fileio.size, duration_elapsed(&s.bench),
 				duration_kbps(&s.bench, s.fileio.size));
 	}

src/helper/fileio.c

@@ -137,7 +137,7 @@ int fileio_close(struct fileio *fileio)
 
 	retval = fileio_close_local(fileio);
 
-	free(fileio->url);
+	free((void*)fileio->url);
 	fileio->url = NULL;
 
 	return retval;

src/helper/fileio.h

@@ -47,8 +47,8 @@ enum fileio_access
 };
 
 struct fileio {
-	char *url;
-	long long size;
+	const char *url;
+	ssize_t size;
 	enum fileio_type type;
 	enum fileio_access access;
 	FILE *file;

src/target/target.c

@@ -2543,7 +2543,7 @@ COMMAND_HANDLER(handle_dump_image_command)
 	if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK))
 	{
 		command_print(cmd_ctx,
-				"dumped %lld bytes in %fs (%0.3f kb/s)", fileio.size,
+				"dumped %zu bytes in %fs (%0.3f kb/s)", fileio.size,
 				duration_elapsed(&bench), duration_kbps(&bench, fileio.size));
 	}