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nc\n\n![Build status](https://github.com/xushaohua/nc/actions/workflows/rust.yml/badge.svg)\n[![Latest version](https://img.shields.io/crates/v/nc.svg)](https://crates.io/crates/nc)\n[![Documentation](https://docs.rs/nc/badge.svg)](https://docs.rs/nc)\n![Minimum rustc version](https://img.shields.io/badge/rustc-1.63+-yellow.svg)\n![License](https://img.shields.io/crates/l/nc.svg)\n\nAccess system calls directly without `std` or `libc`.\n\n- [Documentation](https://docs.rs/nc)\n- [Release notes](https://github.com/xushaohua/nc/tags)\n\nFeatures:\n- No glibc or musl required\n- Access syscalls directly, via assembly\n- No global errno variable, every function returns an errno instead\n- Support latest kernel APIs, like io-uring and pidfd, introduced in linux 5.0+\n\n## Usage\n\nAdd this to `Cargo.toml`:\n```toml\n[dependencies]\nnc = \"0.9\"\n```\n\n## Examples\n\nGet file stat:\n```rust\nlet mut statbuf = nc::stat_t::default();\nmatch unsafe { nc::stat(\"/etc/passwd\", \u0026mut statbuf) } {\n    Ok(_) =\u003e println!(\"s: {:?}\", statbuf),\n    Err(errno) =\u003e eprintln!(\"Failed to get file status, got errno: {}\", errno),\n}\n```\n\nGet human-readable error string:\n```rust\nlet errno = nc::EPERM;\nprintln!(\"err: {:?}\", nc::strerror(errno);\n```\n\nFork process:\n```rust\nlet pid = unsafe { nc::fork() };\nmatch pid {\n    Err(errno) =\u003e eprintln!(\"Failed to call fork(), err: {}\", nc::strerror(errno)),\n    Ok(0) =\u003e {\n        // Child process\n        println!(\"[child] pid: {}\", unsafe { nc::getpid() });\n        let args = [\"ls\", \"-l\", \"-a\"];\n        let env = [\"DISPLAY=wayland\"];\n        let ret = unsafe { nc::execve(\"/bin/ls\", \u0026args, \u0026env) };\n        assert!(ret.is_ok());\n    }\n    Ok(child_pid) =\u003e {\n        // Parent process\n        println!(\"[main] child pid is: {child_pid}\");\n    }\n}\n```\n\nKill self:\n```rust\nlet pid = unsafe { nc::getpid() };\nlet ret = unsafe { nc::kill(pid, nc::SIGTERM) };\n// Never reach here.\nprintln!(\"ret: {:?}\", ret);\n```\n\nOr handle signals:\n```rust\nfn handle_alarm(signum: i32) {\n    assert_eq!(signum, nc::SIGALRM);\n}\n\nfn main() {\n    let sa = nc::new_sigaction(handle_alarm);\n    let ret = unsafe { nc::rt_sigaction(nc::SIGALRM, Some(\u0026sa), None) };\n    assert!(ret.is_ok());\n    let remaining = unsafe { nc::alarm(1) };\n    let mask = nc::sigset_t::default();\n    let ret = unsafe { nc::rt_sigsuspend(\u0026mask) };\n    assert!(ret.is_err());\n    assert_eq!(ret, Err(nc::EINTR));\n    assert_eq!(remaining, Ok(0));\n}\n```\n\n## Supported Operating Systems and Architectures\n\n- linux\n  - aarch64\n  - arm\n  - loongarch64\n  - mips\n  - mips64\n  - mips64el\n  - mipsel\n  - powerpc64\n  - powerpc64el\n  - riscv64\n  - s390x\n  - x86\n  - x86-64\n- android\n  - aarch64\n- freebsd\n  - x86-64\n- netbsd\n  - x86-64\n- mac os\n  - x86-64\n\n## Related projects\n\n- [nix](https://github.com/nix-rust/nix)\n- [relibc](https://gitlab.redox-os.org/redox-os/relibc.git)\n- [Linux Syscall Support](https://chromium.googlesource.com/linux-syscall-support)\n- [syscall pkg in golang](https://github.com/golang/go/tree/master/src/syscall)\n\n## License\n\nThis library is govered by [Apache-2.0 License](LICENSE).\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fxushaohua%2Fnc","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fxushaohua%2Fnc","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fxushaohua%2Fnc/lists"}