tree f3bf6c5ab43cc098fd2e026b336a300dc07f7a93
parent 641084b618ddbe099f0992161988c3e479ae848b
author Jeff King <peff@peff.net> 1526310056 -0400
committer Jeff King <peff@peff.net> 1526961011 -0400

update-index: stat updated files earlier

In the update_one(), we check verify_path() on the proposed
path before doing anything else. In preparation for having
verify_path() look at the file mode, let's stat the file
earlier, so we can check the mode accurately.

This is made a bit trickier by the fact that this function
only does an lstat in a few code paths (the ones that flow
down through process_path()). So we can speculatively do the
lstat() here and pass the results down, and just use a dummy
mode for cases where we won't actually be updating the index
from the filesystem.

Signed-off-by: Jeff King <peff@peff.net>