coreutils/mkfifo/mkfifo.rs

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2014-06-22 12:39:46 +00:00
#![crate_id(name="mkfifo", vers="1.0.0", author="Michael Gehring")]
#![feature(macro_rules)]
/*
* This file is part of the uutils coreutils package.
*
* (c) Michael Gehring <mg@ebfe.org>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
extern crate getopts;
extern crate libc;
use std::num::FromStrRadix;
use std::os;
use libc::funcs::posix88::stat_::mkfifo;
#[path = "../common/util.rs"]
mod util;
static NAME : &'static str = "mkfifo";
static VERSION : &'static str = "1.0.0";
#[allow(dead_code)]
fn main() { os::set_exit_status(uumain(os::args())); }
pub fn uumain(args: Vec<String>) -> int {
let opts = [
getopts::optopt("m", "mode", "file permissions for the fifo", "(default 0666)"),
getopts::optflag("h", "help", "display this help and exit"),
getopts::optflag("V", "version", "output version information and exit"),
];
let matches = match getopts::getopts(args.tail(), opts) {
Ok(m) => m,
Err(err) => fail!("{}", err),
};
if matches.opt_present("version") {
println!("{} {}", NAME, VERSION);
return 0;
}
if matches.opt_present("help") || matches.free.is_empty() {
println!("{} {}", NAME, VERSION);
println!("");
println!("Usage:");
println!(" {} [OPTIONS] NAME...", NAME);
println!("");
print!("{}", getopts::usage("Create a FIFO with the given name.", opts.as_slice()).as_slice());
if matches.free.is_empty() {
return 1;
}
return 0;
}
let mode = match matches.opt_str("m") {
Some(m) => match FromStrRadix::from_str_radix(m.as_slice(), 8) {
Some(m) => m,
None => {
show_error!("invalid mode");
return 1;
}
},
None => 0o666,
};
let mut exit_status = 0;
for f in matches.free.iter() {
f.with_c_str(|name| {
let err = unsafe { mkfifo(name, mode) };
if err == -1 {
show_error!("creating '{}': {}", f, os::error_string(os::errno() as uint));
exit_status = 1;
}
});
}
exit_status
}