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users: use uucore::utmpx

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This commit is contained in:
Knight 2016-08-10 15:24:55 +08:00
parent f4c50921d8
commit 963ab9d321
2 changed files with 12 additions and 31 deletions
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7
src/users/Cargo.toml
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@ -9,8 +9,11 @@ path = "users.rs"
[dependencies] [dependencies]
getopts = "*" getopts = "*"
libc = "*"
uucore = { path="../uucore" } [dependencies.uucore]
default-features = false
features = ["utmpx"]
path = "../uucore"
[[bin]] [[bin]]
name = "users" name = "users"

36
src/users/users.rs
View file

@ -4,6 +4,7 @@
* This file is part of the uutils coreutils package. * This file is part of the uutils coreutils package.
* *
* (c) KokaKiwi <kokakiwi@kokakiwi.net> * (c) KokaKiwi <kokakiwi@kokakiwi.net>
* (c) Jian Zeng <anonymousknight86@gmail.com>
* *
* For the full copyright and license information, please view the LICENSE * For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code. * file that was distributed with this source code.
@ -15,16 +16,12 @@
#![allow(dead_code)] #![allow(dead_code)]
extern crate getopts; extern crate getopts;
extern crate libc;
#[macro_use] #[macro_use]
extern crate uucore; extern crate uucore;
use uucore::utmpx::*;
use getopts::Options; use getopts::Options;
use std::ffi::{CStr, CString};
use std::mem;
use std::ptr;
use uucore::utmpx::*;
static NAME: &'static str = "users"; static NAME: &'static str = "users";
static VERSION: &'static str = env!("CARGO_PKG_VERSION"); static VERSION: &'static str = env!("CARGO_PKG_VERSION");
@ -67,30 +64,11 @@ pub fn uumain(args: Vec<String>) -> i32 {
} }
fn exec(filename: &str) { fn exec(filename: &str) {
unsafe { let mut users = Utmpx::iter_all_records()
utmpxname(CString::new(filename).unwrap().as_ptr()); .read_from(filename)
} .filter(|ut| ut.is_user_process())
.map(|ut| ut.user().into_owned())
let mut users = vec!(); .collect::<Vec<_>>();
unsafe {
setutxent();
loop {
let line = getutxent();
if line == ptr::null() {
break;
}
if (*line).ut_type == USER_PROCESS {
let user = String::from_utf8_lossy(CStr::from_ptr(mem::transmute(&(*line).ut_user)).to_bytes()).to_string();
users.push(user);
}
}
endutxent();
}
if !users.is_empty() { if !users.is_empty() {
users.sort(); users.sort();