tree a034a3063575d0ab0ef246ce76705a4be0e40d97
parent 9ee7b73a9267c1d435a179878e3a4e312635e5e5
author Simon Glass <sjg@chromium.org> 1646086427 -0700
committer Simon Glass <sjg@chromium.org> 1647653064 -0600

sandbox: Open host file for read-only access if needed

Some files cannot be written but read-only access is still useful for
tests. Add a fallback to read-only access when needed.

This is useful in CI when opening a large data file provided by docker,
where read/write access would result in copying the file, thus needing
a lot of extra disk space.

Signed-off-by: Simon Glass <sjg@chromium.org>