v0.21.2

What's Changed

libbpf-rs

• Enabled key iteration on MapHandle objects (formerly possible only on Map objects)
• Bumped minimum Rust version to 1.64

libbpf-cargo

• Added Default impl for generated struct types containing pointers
• Fixed handling of function prototype type declaration inference in BTF and skeleton generation
• Improved error reporting in build script usage
• Bumped minimum Rust version to 1.64

Full Changelog: v0.21.1...v0.21.2

v0.21.1

What's Changed

libbpf-rs

• Fixed build failures on 32 bit x86 and aarch32

libbpf-cargo

• Adjusted named padding members in generated types to have pub visibility

Full Changelog: v0.21.0...v0.21.1

v0.21.0

What's Changed

libbpf-rs

• Added TcHook::get_handle and TcHook::get_priority methods for restoring TcHook object
• Added Program::get_fd_by_id and Program::get_id_by_fd methods for restoring bpf management data
• Added Map::is_pinned and Map::get_pin_path methods for getting map pin status
• Added Program::attach_iter for attaching of programs to an iterator
• Added Map::delete_batch method for bulk deletion of elements
• Added read/update/delete support for queue and stack Map types
• Added a new MapHandle which provides most functionality previously found in Map
• Removed support for creating Map objects standalone (i.e. maps not created by libbpf)
• Removed various <object-type>::fd() methods in favor of <object-type>::as_fd()
• Improved btf_type_match! macro, adding support for most of Rust's match capabilities
• Added skel module exposing skeleton related traits
• Fixed issue where instances of Map created or opened without going through Object would leak file descriptors
• Fixed potential Uprobe attachment failures on optimized builds caused by improper libbpf_sys::bpf_object_open_opts object initialization
• Adjusted various methods to work with BorrowedFd instead of raw file descriptors
• Made RingBufferBuilder::add enforce that self cannot outlive the maps passed into it
• Adjusted Error::System variant textual representation to include errno string

libbpf-cargo

• Adjusted skeleton generation code to ensure implementation of libbpf-rs's SkelBuilder, OpenSkel, and Skel traits
• Improved error reporting on BPF C file compilation failure

New Contributors

• @yan-ace62 made their first contribution in #436
• @yunbo-xufeng made their first contribution in #441

Full Changelog: v0.20.1...v0.21.0

v0.20.1

What's Changed

libbpf-rs

• Added bindings for BTF via newly introduced btf module
• Added Map constructors from pinned paths and from map id
• Added Map::as_libbpf_bpf_map_ptr and Object::as_libbpf_bpf_object_ptr accessors
• Added MapInfo type as a convenience wrapper around bpf_map_info
  • Added Map::info to Map to make it easier to derive MapInfo from a Map instance
• Added set_log_level, log_level, and autoload methods to OpenProgram
• Removed deprecated Link::get_fd method
• Bumped minimum Rust version to 1.63

libbpf-cargo

• Switched over to using libbpf-rs's BTF support internally for skeleton generation
• Fixed potential build failures on systems defaulting to stack protector usage by passing -fno-stack-protector to clang

New Contributors

• @heyrutvik made their first contribution in #388
• @d-e-s-o made their first contribution in #389

Full Changelog: v0.20.0...v0.20.1

v0.20.0

What's Changed

libbpf-rs

• Added support for USDT probes
• Added BPF linker support with new Linker type
• Added Program::attach_uprobe_with_opts for attaching Uprobes with additional options
• Added tproxy example
• Added option to RingBuffer::poll to block indefinitely
• Added support for querying BPF program type using OpenProgram::prog_type
• Added support for retrieving a BPF program's instructions using OpenProgram::insns & Program::insns
• Added MapType::is_supported, ProgramType::is_supported, and ProgramType::is_helper_supported methods
• Added PerfBuffer::as_libbpf_perf_buffer_ptr to access underlying libbpf-sys object
• Adjusted various Map methods to work on shared receivers
• Fixed Link::open constructor to be a static method
• Fixed unsoundness in skeleton logic caused by aliased Box contents
• Implemented Send for PerfBuffer and RingBuffer
• Made more types implement Clone and Debug
• Run leak sanitizer in CI
• Updated various dependencies

libbpf-cargo

• Fixed mismatch in size of generated types with respect to corresponding C types
• Fixed generated skeleton potentially being unstable (changing each time)
• Implemented Sync for generated skeletons
• Made formatting using rustfmt optional
• Updated various dependencies

New Contributors

• @ueno made their first contribution in #277
• @jirutka made their first contribution in #283
• @yunwei37 made their first contribution in #286
• @yuval-k made their first contribution in #295
• @michel-slm made their first contribution in #338
• @vankoven made their first contribution in #369
• @mendess made their first contribution in #371

Full Changelog: v0.19.1...v0.20.0