More mtdow fixes

diff --git a/libs/sys/luasrc/sys/mtdow.lua b/libs/sys/luasrc/sys/mtdow.lua
index ffe3e42..bfa2e9e 100644 (file)
--- a/libs/sys/luasrc/sys/mtdow.lua
+++ b/libs/sys/luasrc/sys/mtdow.lua
@@ -63,7 +63,7 @@ CFEWriter.blocks = {
        image = {
                magic = {"4844", "5735"},
                device = "linux",
-               write = WRITE_COMBINED
+               write = WRITE_IMAGE
        }
 }
 
@@ -181,11 +181,22 @@ function Writer._write_emulated(self, devicename, imagestream, appendfile)
 end
 
 function Writer._write_memory(self, devicename, imagestream)
-       local devicestream = ltn12.sink.file(io.open(devicename, "w"))
-       local stat, err = ltn12.pump.all(imagestream, devicestream)
-       if stat then
-               return os.execute("sync")
+       local imageproc = posix.fork()
+       assert(imageproc ~= -1, ERROR_RESOURCE)
+       if imageproc == 0 then
+               fs.unlink(self.IMAGEFIFO)
+               assert(posix.mkfifo(self.IMAGEFIFO), ERROR_RESOURCE)
+               local imagefifo = io.open(self.IMAGEFIFO, "w")
+               assert(imagefifo, ERROR_RESOURCE)
+               ltn12.pump.all(imagestream, ltn12.sink.file(imagefifo))
+               os.exit(0)
        end
+       
+       return os.execute( 
+               "%s write '%s' '%s'" % {
+               self.MTD, self.IMAGEFIFO, devicename
+               }
+       )       
 end
 
 function Writer._write_combined(self, devicename, imagestream, appendfile)