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DragonOS/user/apps/syscall_ebpf/README.md
linfeng 72423f90bb
feat(ebpf): support Aya framework. (#1070) 
* feat(ebpf): support Aya framework.

1. fix the rbpf bug
2. use new Aya template
3. add kprobe related device files and attributes to sysfs

---
Signed-off-by: chenlinfeng <chenlinfeng25@outlook.com>
2024-12-07 16:41:37 +08:00

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syscall_ebpf

Prerequisites

  1. stable rust toolchains: rustup toolchain install stable
  2. nightly rust toolchains: rustup toolchain install nightly --component rust-src
  3. (if cross-compiling) rustup target: rustup target add ${ARCH}-unknown-linux-musl
  4. (if cross-compiling) LLVM: (e.g.) brew install llvm (on macOS)
  5. (if cross-compiling) C toolchain: (e.g.) brew install filosottile/musl-cross/musl-cross (on macOS)
  6. bpf-linker: cargo install bpf-linker (--no-default-features on macOS)

Build & Run

Use cargo build, cargo check, etc. as normal. Run your program with:

cargo run --release --config 'target."cfg(all())".runner="sudo -E"'

Cargo build scripts are used to automatically build the eBPF correctly and include it in the program.

Cross-compiling on macOS

Cross compilation should work on both Intel and Apple Silicon Macs.

CC=${ARCH}-linux-musl-gcc cargo build --package syscall_ebpf --release \
  --target=${ARCH}-unknown-linux-musl \
  --config=target.${ARCH}-unknown-linux-musl.linker=\"${ARCH}-linux-musl-gcc\"

The cross-compiled program target/${ARCH}-unknown-linux-musl/release/syscall_ebpf can be copied to a Linux server or VM and run there.