mirror of
https://github.com/uutils/coreutils
synced 2024-10-15 12:24:09 +00:00
add users
executable.
This commit is contained in:
parent
4f855fd96a
commit
bc11734557
|
@ -166,7 +166,6 @@ To do
|
|||
- uniq (in progress)
|
||||
- unlink
|
||||
- uptime
|
||||
- users
|
||||
- who
|
||||
|
||||
License
|
||||
|
|
142
users/users.rs
Normal file
142
users/users.rs
Normal file
|
@ -0,0 +1,142 @@
|
|||
#[crate_id(name="users", vers="1.0.0", author="KokaKiwi")];
|
||||
|
||||
/*
|
||||
* This file is part of the uutils coreutils package.
|
||||
*
|
||||
* (c) KokaKiwi <kokakiwi@kokakiwi.net>
|
||||
*
|
||||
* For the full copyright and license information, please view the LICENSE
|
||||
* file that was distributed with this source code.
|
||||
*/
|
||||
|
||||
/* last synced with: whoami (GNU coreutils) 8.22 */
|
||||
|
||||
// Allow dead code here in order to keep all fields, constants here, for consistency.
|
||||
#[allow(dead_code)];
|
||||
|
||||
extern mod extra;
|
||||
|
||||
use std::io::print;
|
||||
use std::cast;
|
||||
use std::libc;
|
||||
use std::os;
|
||||
use std::ptr;
|
||||
use std::str;
|
||||
use extra::getopts::groups;
|
||||
|
||||
static UT_LINESIZE: uint = 32;
|
||||
static UT_NAMESIZE: uint = 32;
|
||||
static UT_HOSTSIZE: uint = 256;
|
||||
|
||||
static EMPTY: libc::c_short = 0;
|
||||
static RUN_LVL: libc::c_short = 1;
|
||||
static BOOT_TIME: libc::c_short = 2;
|
||||
static NEW_TIME: libc::c_short = 3;
|
||||
static OLD_TIME: libc::c_short = 4;
|
||||
static INIT_PROCESS: libc::c_short = 5;
|
||||
static LOGIN_PROCESS: libc::c_short = 6;
|
||||
static USER_PROCESS: libc::c_short = 7;
|
||||
static DEAD_PROCESS: libc::c_short = 8;
|
||||
static ACCOUNTING: libc::c_short = 9;
|
||||
|
||||
struct c_exit_status {
|
||||
e_termination: libc::c_short,
|
||||
e_exit: libc::c_short,
|
||||
}
|
||||
|
||||
struct c_utmp {
|
||||
ut_type: libc::c_short,
|
||||
ut_pid: libc::pid_t,
|
||||
ut_line: [libc::c_char, ..UT_LINESIZE],
|
||||
ut_id: [libc::c_char, ..4],
|
||||
|
||||
ut_user: [libc::c_char, ..UT_NAMESIZE],
|
||||
ut_host: [libc::c_char, ..UT_HOSTSIZE],
|
||||
ut_exit: c_exit_status,
|
||||
ut_session: libc::c_long,
|
||||
ut_tv: libc::timeval,
|
||||
|
||||
ut_addr_v6: [libc::int32_t, ..4],
|
||||
__unused: [libc::c_char, ..20],
|
||||
}
|
||||
|
||||
extern {
|
||||
fn getutent() -> *c_utmp;
|
||||
fn getutid(ut: *c_utmp) -> *c_utmp;
|
||||
fn getutline(ut: *c_utmp) -> *c_utmp;
|
||||
|
||||
fn pututline(ut: *c_utmp) -> *c_utmp;
|
||||
|
||||
fn setutent();
|
||||
fn endutent();
|
||||
|
||||
fn utmpname(file: *libc::c_char) -> libc::c_int;
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let args = os::args();
|
||||
let program = args[0].as_slice();
|
||||
let opts = ~[
|
||||
groups::optflag("h", "help", "display this help and exit"),
|
||||
groups::optflag("V", "version", "output version information and exit"),
|
||||
];
|
||||
|
||||
let matches = match groups::getopts(args.tail(), opts) {
|
||||
Ok(m) => m,
|
||||
Err(f) => fail!(f.to_err_msg()),
|
||||
};
|
||||
|
||||
if matches.opt_present("help") {
|
||||
println!("users 1.0.0");
|
||||
println!("");
|
||||
println!("Usage:");
|
||||
println!(" {:s} [OPTION]... [FILE]", program);
|
||||
println!("");
|
||||
print(groups::usage("Output who is currently logged in according to FILE.", opts));
|
||||
return;
|
||||
}
|
||||
|
||||
if matches.opt_present("version") {
|
||||
println!("users 1.0.0");
|
||||
return;
|
||||
}
|
||||
|
||||
let mut filename = "/var/run/utmp";
|
||||
if matches.free.len() > 0 {
|
||||
filename = matches.free[0].as_slice();
|
||||
}
|
||||
|
||||
exec(filename);
|
||||
}
|
||||
|
||||
fn exec(filename: &str) {
|
||||
filename.with_c_str(|filename| {
|
||||
unsafe {
|
||||
utmpname(filename);
|
||||
}
|
||||
});
|
||||
|
||||
let mut users: ~[~str] = ~[];
|
||||
|
||||
unsafe {
|
||||
setutent();
|
||||
|
||||
loop {
|
||||
let line = getutent();
|
||||
|
||||
if line == ptr::null() {
|
||||
break;
|
||||
}
|
||||
|
||||
if (*line).ut_type == USER_PROCESS {
|
||||
let user = str::raw::from_c_str(cast::transmute(&(*line).ut_user));
|
||||
users.push(user);
|
||||
}
|
||||
}
|
||||
|
||||
endutent();
|
||||
}
|
||||
|
||||
users.sort();
|
||||
println!("{}", users.connect(" "));
|
||||
}
|
Loading…
Reference in a new issue