There are three major changes:
1. Add resize() to MerkleLeaves as the simple hash container.
2. Handle resize for a writable file. The special case is that the hash
of the new last chunk can change, and the only way to calculate is to
read the original data back.
3. Handle the size change in FUSE.
Bug: 186265793
Test: atest
Test: dex2oat succeeds (with more local changes)
Change-Id: I1ec20b6f0c69fd3ec24a6d04fc34583962265479
The remote editor allows to read/write from/to a remote file. This
change:
- Adds new binder API `writeFile`.
- Update fd_server to serve a read/writable fd. Read operation is done
through the existing read API when applicable.
- Adds `RemoteFileEditor` as a binder client for both read and write.
Bug: 171279640
Test: adb shell exec 9<>/data/local/tmp/output fd_server --rw-fds 9
Test: with changes in fusefs.rs, saw file changed correctly (md5sum)
Change-Id: I78ef198ee8a3a0f2d99717dc0c00fccde757f3de
fd_server provides a binder service (currently local binder since remote
binder is not ready). The server starts with FDs specified in the
command line flags (and supposedly opened FDs passed from the parent
process).
fd_server is supposed to run in Android to provide backing file to
authfs.
Test: # Start the server to serve the file. Read from the client.
adb shell 'exec
9</system/bin/sh
8</data/local/tmp/input.4m
7</data/local/tmp/input.4m.merkle_dump
6</data/local/tmp/input.4m.fsv_sig
fd_server --ro-fds 9 --ro-fds 8:7:6'`
Bug: 171280169
Change-Id: Ide68f23d7177b726ffd48ef960276bd8cf5e5846
Victor Hsieh