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4e2f8322cc
Remove mem::forget::<HashMap>() calls in tests which fail to compile when
HashMap is provided by hashbrown:
info: running `cargo check --all-targets --no-default-features` on aya-obj (11/23)
Checking aya-obj v0.1.0 (/home/tamird/src/aya/aya-obj)
error[E0505]: cannot move out of `map` because it is borrowed
--> aya-obj/src/relocation.rs:594:21
|
578 | let map = fake_legacy_map(1);
| --- binding `map` declared here
579 | let maps_by_symbol = HashMap::from([(1, ("test_map", Some(1), &map))]);
| ---- borrow of `map` occurs here
...
594 | mem::forget(map);
| ^^^ move out of `map` occurs here
595 | }
| - borrow might be used here, when `maps_by_symbol` is dropped and runs the destructor for type `hashbrown::HashMap<usize, (&str, Option<i32>, &maps::Map)>`
error[E0505]: cannot move out of `map_1` because it is borrowed
--> aya-obj/src/relocation.rs:655:21
|
632 | let map_1 = fake_legacy_map(1);
| ----- binding `map_1` declared here
...
635 | (1, ("test_map_1", Some(1), &map_1)),
| ------ borrow of `map_1` occurs here
...
655 | mem::forget(map_1);
| ^^^^^ move out of `map_1` occurs here
656 | mem::forget(map_2);
657 | }
| - borrow might be used here, when `maps_by_symbol` is dropped and runs the destructor for type `hashbrown::HashMap<usize, (&str, Option<i32>, &maps::Map)>`
error[E0505]: cannot move out of `map_2` because it is borrowed
--> aya-obj/src/relocation.rs:656:21
|
633 | let map_2 = fake_legacy_map(2);
| ----- binding `map_2` declared here
...
636 | (2, ("test_map_2", Some(2), &map_2)),
| ------ borrow of `map_2` occurs here
...
656 | mem::forget(map_2);
| ^^^^^ move out of `map_2` occurs here
657 | }
| - borrow might be used here, when `maps_by_symbol` is dropped and runs the destructor for type `hashbrown::HashMap<usize, (&str, Option<i32>, &maps::Map)>`
error[E0505]: cannot move out of `map` because it is borrowed
--> aya-obj/src/relocation.rs:694:21
|
678 | let map = fake_btf_map(1);
| --- binding `map` declared here
679 | let maps_by_symbol = HashMap::from([(1, ("test_map", Some(1), &map))]);
| ---- borrow of `map` occurs here
...
694 | mem::forget(map);
| ^^^ move out of `map` occurs here
695 | }
| - borrow might be used here, when `maps_by_symbol` is dropped and runs the destructor for type `hashbrown::HashMap<usize, (&str, Option<i32>, &maps::Map)>`
error[E0505]: cannot move out of `map_1` because it is borrowed
--> aya-obj/src/relocation.rs:755:21
|
732 | let map_1 = fake_btf_map(1);
| ----- binding `map_1` declared here
...
735 | (1, ("test_map_1", Some(1), &map_1)),
| ------ borrow of `map_1` occurs here
...
755 | mem::forget(map_1);
| ^^^^^ move out of `map_1` occurs here
756 | mem::forget(map_2);
757 | }
| - borrow might be used here, when `maps_by_symbol` is dropped and runs the destructor for type `hashbrown::HashMap<usize, (&str, Option<i32>, &maps::Map)>`
error[E0505]: cannot move out of `map_2` because it is borrowed
--> aya-obj/src/relocation.rs:756:21
|
733 | let map_2 = fake_btf_map(2);
| ----- binding `map_2` declared here
...
736 | (2, ("test_map_2", Some(2), &map_2)),
| ------ borrow of `map_2` occurs here
...
756 | mem::forget(map_2);
| ^^^^^ move out of `map_2` occurs here
757 | }
| - borrow might be used here, when `maps_by_symbol` is dropped and runs the destructor for type `hashbrown::HashMap<usize, (&str, Option<i32>, &maps::Map)>`
For more information about this error, try `rustc --explain E0505`.
error: could not compile `aya-obj` due to 6 previous errors
warning: build failed, waiting for other jobs to finish...
error: process didn't exit successfully: `/home/tamird/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin/cargo check --all-targets --manifest-path aya-obj/Cargo.toml --no-default-features` (exit status: 101)
|
2 years ago | |
|---|---|---|
| .. | ||
| include | 2 years ago | |
| src | 2 years ago | |
| Cargo.toml | 2 years ago | |
| README.md | 2 years ago | |
README.md
aya-obj
Status
This crate includes code that started as internal API used by the aya crate. It has been split out so that it can be used by other projects that deal with eBPF object files. Unless you're writing low level eBPF plumbing tools, you should not need to use this crate but see the aya crate instead.
The API as it is today has a few rough edges and is generally not as polished nor stable as the main aya crate API. As always, improvements welcome!
Overview
eBPF programs written with libbpf or aya-bpf are usually compiled into an ELF object file, using various sections to store information about the eBPF programs.
aya-obj is a library for parsing such eBPF object files, with BTF and
relocation support.
Example
This example loads a simple eBPF program and runs it with rbpf.
use aya_obj::{generated::bpf_insn, Object};
// Parse the object file
let bytes = std::fs::read("program.o").unwrap();
let mut object = Object::parse(&bytes).unwrap();
// Relocate the programs
object.relocate_calls().unwrap();
object.relocate_maps(std::iter::empty()).unwrap();
// Run with rbpf
let instructions = &object.programs["prog_name"].function.instructions;
let data = unsafe {
core::slice::from_raw_parts(
instructions.as_ptr() as *const u8,
instructions.len() * core::mem::size_of::<bpf_insn>(),
)
};
let vm = rbpf::EbpfVmNoData::new(Some(data)).unwrap();
let _return = vm.execute_program().unwrap();