Commit Graph

897 Commits (9c451a3357317405dd8e2e4df7d006cee943adcc)
 

Author SHA1 Message Date
Dave Tucker 686ce45f93 aya: Fix BTF type resolution for Arrays and Ints
The union of `size` and `type` is unused in BTF_KIND_ARRAY.
Type information of elements is in the btf_array struct that follows in
the type_ field while the index type is in the index_type field.

For BTF_KIND_INT, only the offset should be compared and size and
signedness should be ignored.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker 01187735f0
Merge pull request #167 from aya-rs/codegen
Update libbpf to be89b28f96be426e30a2b0c5312d13b30ee518c7
3 years ago
dave-tucker 324c679a41 Update libbpf to be89b28f96be426e30a2b0c5312d13b30ee518c7 3 years ago
Alessandro Decina 4e9bc32a3d aya: maps: rename from_pinned() to open_pinned() 3 years ago
Alessandro Decina 9b1ab96ad5
Merge pull request #166 from dave-tucker/decl_tag
codegen: add btf_decl_tag
3 years ago
Dave Tucker 19af687480 codegen: add btf_decl_tag
This is required to add support for BTF_KIND_DECL_TAG

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina f12054a00d
Merge pull request #165 from dave-tucker/prog_pinned
aya: Retrieve program from pinned path
3 years ago
Dave Tucker abc8d27440 aya: Retrieve program from pinned path
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker 353b5f9cb1
Merge pull request #163 from aya-rs/codegen
Update libbpf to 22411acc4b2c846868fd570b2d9f3b016d2af2cb
3 years ago
dave-tucker 0619f80090 Update libbpf to 22411acc4b2c846868fd570b2d9f3b016d2af2cb 3 years ago
Dave Tucker 13d3b5eea5
Merge pull request #162 from nimrodshn/add_bpf_lpm_trie_key_to_bindings
Add bpf_lpm_trie_key to bindings
3 years ago
Ubuntu 0beb0c501f Add bpf_lpm_trie_key to aya codegen to generate bindings 3 years ago
Alessandro Decina 001348a301
Merge pull request #158 from dave-tucker/btf-fix
aya: allocate func/line_info buffers outside if
3 years ago
Dave Tucker 83cfe56fe7 aya: allocate func/line_info buffers outside if
the pointer isn't valid in the current code!

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker bca01580e7 aya: document the public api
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina c5a10f8fbe
Merge pull request #127 from dave-tucker/ext
Support for BPF_PROG_TYPE_EXT
3 years ago
Dave Tucker 877c76043a btf: Add fixup for PTR types from Rust
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker 5c6131afba Add BPF_PROG_TYPE_EXT
This requires loading the BTF to kernel when loading all programs as
well as implementing Extension program type

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker 379bb313b1 obj: Add Btf::to_bytes
This allows for parsed BTF to be re-encoded such that it could be loaded
in to the kernel. It moves bytes_of to the utils package. We could use
Object::bytes_of, but this requires the impl of the Pod trait on
generated code.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina c3cd45c6df
Merge pull request #154 from dave-tucker/release-notes
ci: Add dependencies/codegen/docs to rel notes
3 years ago
Dave Tucker d2449ca292 ci: add docs to release notes
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker fbed584f78 ci: Add dependencies/codegen to rel notes
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina 2ea6d68544
Merge pull request #152 from dave-tucker/release-notes
ci: Add autogenerated release notes
3 years ago
Dave Tucker dc16739b06 ci: Add autogenerated release notes
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina 923cd9b767
Merge pull request #142 from vadorovsky/args-mut-ptr
aya-bpf: Add bpf_probe_write_user helper
3 years ago
Michal Rostecki 1df3b17d29 aya-bpf: Add bpf_probe_write_user helper
This helper allows to write to mutable pointers in the userspace, which
come from userspace functions that uprobes attach to.

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
3 years ago
Alessandro Decina 5836b3f1b8
Merge pull request #149 from willfindlay/program_array
bpf/maps: implement ProgramArray
3 years ago
Alessandro Decina 149fa86de7
Merge pull request #150 from willfindlay/fix-tests
bpf/macros: fix tests
3 years ago
William Findlay b28ae97053
bpf/macros: fix tests
Doctests were broken due to depencencies on a generated vmlinux, incorrect function
signatures, and a missing unsafe keyword.
3 years ago
William Findlay df26fd94a7
bpf/program_array: use never type, add unsafe flag, and document safety 3 years ago
William Findlay ff14493751
bpf/maps: implement ProgramArray
This PR implements the ProgramArray map type in aya-bpf. Includes a convenient tail_call
method that wraps the bpf_tail_call helper.
3 years ago
Alessandro Decina faa36763f7
Merge pull request #146 from dave-tucker/ro-maps
Mark .rodata maps as readonly and freeze on load
3 years ago
Michal Rostecki 54377b6140 aya-bpf: Allow to convert probe arguments to mutable pointers
Before this change, arguments fetched with `arg` from `ProbeContext`
could be only fetched as const pointers. This change allows to get mut
pointers as well.

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
3 years ago
Michal Rostecki 5d8afc58f4 aya-bpf-macros: Fix LSM macro documentation
It was causing `cargo doc` inside bpf/ to fail.

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
3 years ago
Dave Tucker 65a0b83205 Mark .rodata maps as readonly and freeze on load
This commit marks .rodata maps as BPF_F_RDONLY_PROG when loaded to
prevent a BPF program mutating them.

Initial map data is populated by the loader using the new
`BpfLoader::set_global()` API. The loader will mark
is marked as frozen using bpf_map_freeze to prevent map data
being changed from userspace.

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina 3a4c84fe17
Merge pull request #145 from aya-rs/codegen
Update libbpf to 19656636a9b9a2de1f71fa3135709295c16701cc
3 years ago
Dave Tucker 2b7dda766f btf: Fix for rename of BPF_ -> BPF_CORE_
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
dave-tucker 05d4bc39ea Update libbpf to 19656636a9b9a2de1f71fa3135709295c16701cc 3 years ago
Dave Tucker ef42739c65 .github: force push to codegen branch
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker f8021c33fc codegen: Add bindings for BPF_F flags
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker 23d1920854 codegen: add bindings for btf structs
This adds `bpf_btf_info` which can be used to get BPF information via a
syscall. It also adds `btf_line_info` and `btf_func_info` which are
required to parse the line and func info sections of BTF

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Dave Tucker facb01f34b ci: Use crabby-the-crab
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Michal Rostecki 7e2fcd1d6d Support for fentry and fexit programs
fentry and fexit programs are similar to kprobe and kretprobe, but they
are newer and they have practically zero overhead to call before or
after kernel function. Also, fexit programs are focused on access to
arguments rather than the return value.

Those kind of programs were introduced in the following patchset:

https://lwn.net/Articles/804112/

Signed-off-by: Michal Rostecki <mrostecki@opensuse.org>
3 years ago
dependabot[bot] 54b0c67795 build(deps): update object requirement from 0.27 to 0.28
Updates the requirements on [object](https://github.com/gimli-rs/object) to permit the latest version.
- [Release notes](https://github.com/gimli-rs/object/releases)
- [Changelog](https://github.com/gimli-rs/object/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gimli-rs/object/compare/0.27.0...0.28.1)

---
updated-dependencies:
- dependency-name: object
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
3 years ago
Alessandro Decina 317fd576b4
Merge pull request #138 from dave-tucker/nightly
github: Set toolchain override
3 years ago
Dave Tucker 7e7314ff2b github: Set toolchain override
This ensures that the cache action uses the correct Rust version

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
3 years ago
Alessandro Decina 6313ddfe0c
Merge pull request #136 from nimrodshn/add_impl_pod_for_u128
Implement Pod for u128 and i128
3 years ago
Ubuntu 24a292f605 Implement Pod for u128 3 years ago
Alessandro Decina f34b76c8d3
Merge pull request #134 from aya-rs/codegen
Update libbpf to 93e89b34740c509406e948c78a404dd2fba67b8b
3 years ago
dave-tucker 17d43cd6f8 Update libbpf to 93e89b34740c509406e948c78a404dd2fba67b8b 3 years ago