tree a67c7252fdc8a3c16b588ee6fc1e1155b00fb69b
parent 6a99971096a9c5a6752f494db1d9b57d4ab77af2
author Chris Fries <cfries@google.com> 1492010757 -0500
committer Chris Fries <cfries@google.com> 1492438969 -0500

fastboot: Support larger transfers during flash

Adding methods to queue and download flashable images by fd instead of
by pointer, so that we can deal with sending large (up to 4GB) files
on windows and linux.  This gets past limitations on linux to read
more than 2GB from a file at a time, as well as memory limitations
on win32, in order to download up to 4GB in a single transfer.

Test: fastboot -w
Test: "flash-all" from nexus factory images site (incl. fastboot -w update)
Test: fastboot flash with large and small image, large and small max-download-size
Test: Sanity check flashing on win32, darwin, linux.
Test: Sanity check 3GB image download (with 3GB max-download-size)
      on win32, darwin, linux.

Bug: 36810152
Change-Id: I528d739d344eb080d59d721dadf3b3b34d4b375e