This commit updates sepol_impl::add_xperm_rule() so that it loads the
current xperm bits from the existing avtab entry before setting or
clearing xperm bits. This fixes new allowxperm rules causing old xperm
rules within the same xperm specified/driver to be removed.
Fixes: #7176
Signed-off-by: Andrew Gunnerson <accounts+github@chiller3.com>
- Introduce new types: LoggedResult and LoggedError
- Introduce new extension methods to log and add additional msgs
- Never exit when logging error messages in Rust (all errors should be
handled by using Result and Rust's error propagation)
- Remove all usages of anyhow as it doesn't fit Magisk's use cases
