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| author | Arnd Bergmann <arnd@arndb.de> | 2024-05-28 17:58:03 +0300 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2024-07-09 00:44:01 +0300 |
| commit | 1f9a8286bc0c3df7d789ea625d9d9db3d7779f2d (patch) | |
| tree | 9abdf014774dd6862a8899462cf0ca472ed59863 /rust | |
| parent | 1b580e7b9ba2e5939c4b94da2cb4888605b39955 (diff) | |
| download | linux-1f9a8286bc0c3df7d789ea625d9d9db3d7779f2d.tar.xz | |
uaccess: always export _copy_[from|to]_user with CONFIG_RUST
Rust code needs to be able to access _copy_from_user and _copy_to_user
so that it can skip the check_copy_size check in cases where the length
is known at compile-time, mirroring the logic for when C code will skip
check_copy_size. To do this, we ensure that exported versions of these
methods are available when CONFIG_RUST is enabled.
Alice has verified that this patch passes the CONFIG_TEST_USER_COPY test
on x86 using the Android cuttlefish emulator.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20240528-alice-mm-v7-2-78222c31b8f4@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust')
0 files changed, 0 insertions, 0 deletions