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Subject[PATCH v1] binder: convert `BINDER_*` ioctl `#define`s into an `enum`
Date
bindgen (a tool which generates the "raw" C bindings for Rust) only
works (so far) with "simple" C `#define`s. In order to avoid having
to manually maintain these constants in the (potential) Rust side,
this patch converts them into an `enum`.

There may be support in the future for expanding macros that end up in
a "numeric" one: https://github.com/rust-lang/rust-bindgen/issues/753.

Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
Two notes:
- Let me know if you prefer that I base this on top of a binder branch.
- Wedson should OK the changes for his `Signed-off-by` tag (and probably
he should be the author of the patch).

include/uapi/linux/android/binder.h | 28 +++++++++++++++-------------
1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/include/uapi/linux/android/binder.h b/include/uapi/linux/android/binder.h
index 11157fae8a8e..ed4d11a0bb99 100644
--- a/include/uapi/linux/android/binder.h
+++ b/include/uapi/linux/android/binder.h
@@ -236,19 +236,21 @@ struct binder_frozen_status_info {
__u32 async_recv;
};

-#define BINDER_WRITE_READ _IOWR('b', 1, struct binder_write_read)
-#define BINDER_SET_IDLE_TIMEOUT _IOW('b', 3, __s64)
-#define BINDER_SET_MAX_THREADS _IOW('b', 5, __u32)
-#define BINDER_SET_IDLE_PRIORITY _IOW('b', 6, __s32)
-#define BINDER_SET_CONTEXT_MGR _IOW('b', 7, __s32)
-#define BINDER_THREAD_EXIT _IOW('b', 8, __s32)
-#define BINDER_VERSION _IOWR('b', 9, struct binder_version)
-#define BINDER_GET_NODE_DEBUG_INFO _IOWR('b', 11, struct binder_node_debug_info)
-#define BINDER_GET_NODE_INFO_FOR_REF _IOWR('b', 12, struct binder_node_info_for_ref)
-#define BINDER_SET_CONTEXT_MGR_EXT _IOW('b', 13, struct flat_binder_object)
-#define BINDER_FREEZE _IOW('b', 14, struct binder_freeze_info)
-#define BINDER_GET_FROZEN_INFO _IOWR('b', 15, struct binder_frozen_status_info)
-#define BINDER_ENABLE_ONEWAY_SPAM_DETECTION _IOW('b', 16, __u32)
+enum {
+ BINDER_WRITE_READ = _IOWR('b', 1, struct binder_write_read),
+ BINDER_SET_IDLE_TIMEOUT = _IOW('b', 3, __s64),
+ BINDER_SET_MAX_THREADS = _IOW('b', 5, __u32),
+ BINDER_SET_IDLE_PRIORITY = _IOW('b', 6, __s32),
+ BINDER_SET_CONTEXT_MGR = _IOW('b', 7, __s32),
+ BINDER_THREAD_EXIT = _IOW('b', 8, __s32),
+ BINDER_VERSION = _IOWR('b', 9, struct binder_version),
+ BINDER_GET_NODE_DEBUG_INFO = _IOWR('b', 11, struct binder_node_debug_info),
+ BINDER_GET_NODE_INFO_FOR_REF = _IOWR('b', 12, struct binder_node_info_for_ref),
+ BINDER_SET_CONTEXT_MGR_EXT = _IOW('b', 13, struct flat_binder_object),
+ BINDER_FREEZE = _IOW('b', 14, struct binder_freeze_info),
+ BINDER_GET_FROZEN_INFO = _IOWR('b', 15, struct binder_frozen_status_info),
+ BINDER_ENABLE_ONEWAY_SPAM_DETECTION = _IOW('b', 16, __u32),
+};

/*
* NOTE: Two special error codes you should check for when calling
base-commit: 42226c989789d8da4af1de0c31070c96726d990c
--
2.36.1

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