tree b33b3b372b8ea8c905aa5defa0f8630d00ec3433
parent 4f5711cbf72737debc790561ba2cfe2d1a38f7bd
author William A. Kennington III <wak@google.com> 1660351184 -0700
committer William A. Kennington III <wak@google.com> 1660680282 -0700

fd/fmt: Add storage consistent formatted output

This makes it trivial for a caller to write to files piecewise while
still guaranteeing that the output is always consistent. It performs
buffered writes to a tmpfile and only once successful does it swap out
for the resulting file.

Change-Id: I7e733a283ee60a47ddc6923cd9579fa49a7c5434
Signed-off-by: William A. Kennington III <wak@google.com>