tree cdd2c64e94b760f92b8952f3de777b68e0f2c04e
parent 0193f560e32de4224574a5f0d6413f934fa0ff32
author Anatol Pomazau <anatol@google.com> 1326323547 -0800
committer Mike J. Chen <mjchen@google.com> 1328293642 -0800

Pass file descriptor instead of file name

Passing a file descriptor to make_ext4fs_internal() is more flexible.
We can use tmpfile() to create a temporary file.
tmpfile() is better than other solutions because it unlinks the file
right after creating it, so closing fd effectively removes temp file.
Thus we don't have to worry about large temp files accidently left
on the filesystem in case of the program crash.

Change-Id: I44109e98854c314e1d6cfca7ce918efa7fb92a7a