| commit | e2b8d0129308391db7f34a47ad5df877912c4bb4 | [log] [tgz] |
|---|---|---|
| author | Pierre-Clément Tosi <ptosi@google.com> | Tue Sep 03 14:41:39 2024 +0100 |
| committer | Pierre-Clément Tosi <ptosi@google.com> | Tue Sep 03 14:52:31 2024 +0100 |
| tree | a671143b9411b951531dfcab4bdf786e0d7d7737 | |
| parent | c86d40fd68cf6b82f41eb6a2211488eab5237616 [diff] |
autfs: Replace use of cfg_if with hardened cast
The previous code seemed to guesstimate the C type blksize_t, type of
stat::st_blksize (see stat64(2)), by using Rust config flags so that it
could cast explicitly a u64 constant to it.
Instead, trust that the libc crate got the type width right and cast the
constant to it in a safe way by relying on .try_into().unwrap() instead
of `as`, which removes the risk of unexpected information loss ("modulo
2^(WIDTH) behavior"). Panicking instead of returning an error is fine as
it is deterministic for a given build and very unlikely.
As this was the only user of cfg_if, remove it from the Android.bp.
Note: no behavioral change intended.
Test: banchan com.android.virt aosp_arm64 && m apps_only dist
Change-Id: I6f92fc1a78297b852b26d6fd5f10e3284e8737fe
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