tree e729925060db688aa9c9cf4fefd9c40181ca66f4
parent faf6f92c5982ceae3a0bf33370d6f924cf99e0a2
author Noel Gordon <noel@chromium.org> 1634617930 +1100
committer Commit Bot <commit-bot@chromium.org> 1634626650 +0000

fusebox: Add DirEntry stream response error handling

A FUSE readdir op will create DirEntryResponse to collect responses
(DirEntry list chunks, streamed from the server) and append them to
DirEntryResponse DirEntry list.

Any received chunk can have a non-zero error. Add an "Append" error
API to DirEntryResponse. Like other Append API, Respond() to Kernel
Fuse DirEntryRequest(s) [1].

[1] One error is sufficient in practice to end the FUSE readdir op.
The Kernel sends a FUSE releasedir op to close the dir on receiving
a readdir op error.

BUG=chromium:1244007
TEST=cros_workon_make --board=${BOARD} fusebox --test

Change-Id: If80bb95cb9a7c268157a440d03e3b9fba3baa1eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/3230449
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Tested-by: Noel Gordon <noel@chromium.org>