Execute system call directly. nc do not depend on std.
Add this to Cargo.toml:
toml
[dependencies]
nc = "0.4.10"
And add this to crate code:
rust
extern crate nc;
Get file stat:
rust
let mut statbuf = nc::stat_t::default();
match nc::stat("/etc/passwd", &mut statbuf) {
Ok(_) => println!("s: {:?}", statbuf),
Err(errno) => eprintln!("Failed to get file status, got errno: {}", errno),
}
Fork process:
rust
let pid = nc::fork();
match pid {
Ok(pid) => {
if pid == 0 {
println!("parent process!");
} else if pid < 0 {
eprintln!("fork() error!");
} else {
println!("child process: {}", pid);
let args = [""];
let env = [""];
match nc::execve("/bin/ls", &args, &env) {
Ok(_) => {},
Err(errno) => eprintln!("`ls` got err: {}", errno),
}
}
},
Err(errno) => eprintln!("errno: {}", errno),
}
Kill self:
rust
let pid = nc::getpid();
let ret = nc::kill(pid, nc::SIGTERM);
// Never reach here.
println!("ret: {:?}", ret);
For stable version of rustc, please install gcc first.
As asm! feature is unavailable in stable version. So we use a C library
instead to wrap syscall APIs.
This library is release in Apache License.