Change tinyrt inclusion macros to always be defined

build.lua

@@ -115,10 +115,8 @@ for line in io.lines(tinyrt_manifest_path) do
         local api_name = line_it():upper()
         local has_impl = line_it()
         if has_impl == '0' or has_impl == '1' then
-            if has_impl == '1' then
-                local api_define = '#define RT_API_' .. api_name .. '\n'
+            local api_define = '#define RT_API_' .. api_name .. ' '..has_impl..'\n'
             tinyrt_iface_hdr:write(api_define)
-            end            
         else
             print('SYNTAX ERROR AT LINE '..i..': Expected 1 or 0 for the value')
         end

src/linux/tinyrt.c

@@ -39,11 +39,12 @@ static RT_Status rt_file_read(u64 size, void *buffer, RT_File *from, u64 *out_by
 }
 
 static RT_Status rt_file_write(RT_File *to, u64 size, void *buffer, u64 *out_bytes_written) {
-    i64 bytes_written = syscall_write(to->fd, buffer, size);
-    if(bytes_written < 0) {
-        return RT_STATUS_FILE_IO_ERROR;
-    }
-    *out_bytes_written = bytes_written;
+    // Call the syscall
+    i64 status = syscall_write(to->fd, buffer, size);
+    if(-status == EBADF) return RT_ERROR_BAD_PARAM;
+    if(-status == EIO) return RT_STATUS_FILE_IO_ERROR;
+    if(-status > 0) return RT_STATUS_FILE_IO_ERROR;
+    *out_bytes_written = status;
     return RT_STATUS_OK;
 }
 

src/tinyrt.h

@@ -42,7 +42,7 @@ static RT_Status rt_init();
 static RT_Status rt_deinit();
 
 // File API
-#if defined(RT_API_FILE)
+#if RT_API_FILE == 1
     struct RT_File typedef RT_File;
     struct RT_File {
         union {