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