This adds a new API to test whether a given program type is supported.
This is to support 3 usecases:
1. A project like bpfman (which uses Aya) may wish to prevent users with
a list of program types that are supported on the target system
2. A user of Aya may wish to test whether Fentry/Fexit programs are
supported and code their own behaviour to fallback to Kprobes
3. Our own integration tests can be made to skip certain program tests
when kernel features are missing.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
```
error: manual implementation of `ok`
--> aya/src/util.rs:261:28
|
261 | let addr = match u64::from_str_radix(addr, 16) {
| ____________________________^
262 | | Ok(addr) => Some(addr),
263 | | Err(ParseIntError { .. }) => None,
264 | | }?;
| |_________________^ help: replace with: `u64::from_str_radix(addr, 16).ok()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:1705:44
|
1705 | section: ProgramSection::KProbe { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
note: the lint level is defined here
--> aya-obj/src/lib.rs:68:9
|
68 | #![deny(clippy::all, missing_docs)]
| ^^^^^^^^^^^
= note: `#[deny(clippy::unneeded_struct_pattern)]` implied by `#[deny(clippy::all)]`
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:1769:44
|
1769 | section: ProgramSection::KProbe { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:1787:44
|
1787 | section: ProgramSection::KProbe { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:1919:48
|
1919 | section: ProgramSection::KProbe { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2041:52
|
2041 | section: ProgramSection::TracePoint { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2058:52
|
2058 | section: ProgramSection::TracePoint { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2081:54
|
2081 | section: ProgramSection::SocketFilter { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2151:55
|
2151 | section: ProgramSection::RawTracePoint { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2168:55
|
2168 | section: ProgramSection::RawTracePoint { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2243:55
|
2243 | section: ProgramSection::BtfTracePoint { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2266:59
|
2266 | section: ProgramSection::SkSkbStreamParser { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2289:59
|
2289 | section: ProgramSection::SkSkbStreamParser { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2410:58
|
2410 | section: ProgramSection::CgroupSkbIngress { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2433:58
|
2433 | section: ProgramSection::CgroupSkbIngress { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2456:51
|
2456 | section: ProgramSection::CgroupSkb { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: struct pattern is not needed for a unit variant
--> aya-obj/src/obj.rs:2479:51
|
2479 | section: ProgramSection::CgroupSkb { .. },
| ^^^^^^^ help: remove the struct pattern
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_struct_pattern
error: manual implementation of `ok`
--> aya-log-common/src/lib.rs:168:36
|
168 | let wire_len: LogValueLength = match value.len().try_into() {
| ____________________________________^
169 | | Ok(wire_len) => Some(wire_len),
170 | | Err(TryFromIntError { .. }) => None,
171 | | }?;
| |_____^ help: replace with: `value.len().try_into().ok()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
error: manual implementation of `err`
--> init/src/main.rs:141:30
|
141 | .filter_map(|result| match result {
| ______________________________^
142 | | Ok(()) => None,
143 | | Err(err) => Some(err),
144 | | })
| |_________^ help: replace with: `result.err()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
error: manual implementation of `err`
--> xtask/src/public_api.rs:80:30
|
80 | .filter_map(|result| match result {
| ______________________________^
81 | | Ok(()) => None,
82 | | Err(err) => Some(err),
83 | | })
| |_________^ help: replace with: `result.err()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
```
```
error: called `Iterator::last` on a `DoubleEndedIterator`; this will needlessly iterate the entire iterator
--> aya/src/programs/uprobe.rs:282:64
|
282 | let path = line.split(|b| b.is_ascii_whitespace()).last()?;
| ^^^^^^ help: try: `next_back()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_ended_iterator_last
```
Fixes#1132.
Note that this change does not add support in the public API for kprobes
or tracepoints, but it's a trivial matter of plumbing.
Along the way, the Uprobe::attach API is cleaned up to make the
attachment location more coherent. The logic being: if we're going to be
breaking the API anyway, may as well clean it up a bit.
Furthermore, the aya::sys::bpf_link_attach function is cleaned up by
properly modeling the the union in the final field with a rust enum.
Provide an `arg()` method in `RawTracepointArgs` wrapper of
`bpf_raw_tracepoint_args` and also in `RawTracepointContext`, so
it's directly available in raw tracepoint programs.
The methods and traits implemented here are unsafe. There is no
way to reliably check the number of available arguments, so
requesting a non-existing one leads to undefined behavior.
* docs: update docs for load to mention include_bytes_aligned
This macro is required if you are bundling programs statically into your binary, which is not an uncommon thing to do.
This change updates the documentation for the load function to mention this macro and the need for alignment.
We're seeing 429 from Github trying to download gen_init_cpio, so cache
it using actions cache. Since I'm here add this for kernel images as
well to save time waiting on slow Debian servers.
Unwinding gives us more information, so we shouldn't disable it
globally. It is already disabled for BPF targets via the target configs
in rustc itself.
This complicates the clippy invocation somewhat, so put it in a shell
script for developer as well as CI use.
The const-assert crate doesn't even compile with stable rust, so we
shouldn't depend on it. Instead we replicate its functionality behind
cfg(unstable) which is set at build time based on the toolchain in use.
Dave Tucker
Tamir Duberstein
Eric Long
tamird
ajwerner
Mike Rostecki
dependabot[bot]
Noah Kennedy