MggMuggins
5e53b4b161
All the utilities use the new API I defined in mu recent PR to redox_users. `su`'s behavior was also fixed. I also updated Cargo.toml (removing unused deps). This may require another commit after my first PR is merged in order to appropriately update Cargo.lock and make sure everything builds.
59 lines
1.2 KiB
Rust
59 lines
1.2 KiB
Rust
#![deny(warnings)]
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extern crate arg_parser;
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extern crate extra;
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extern crate redox_users;
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use std::io::{self, Write};
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use std::process::exit;
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use std::env;
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use arg_parser::ArgParser;
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use extra::option::OptionalExt;
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use redox_users::{get_euid, AllUsers};
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const MAN_PAGE: &'static str = /* @MANSTART{whoami} */ r#"
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NAME
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whoami - display effective user id
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SYNOPSIS
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whoami [ -h | --help ]
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DESCRIPTION
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The whoami utility displays your effective user ID as a name.
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OPTIONS
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-h
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--help
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Display this help and exit.
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EXIT STATUS
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The whoami utility exits 0 on success, and >0 if an error occurs.
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AUTHOR
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Written by Jose Narvaez.
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"#; /* @MANEND */
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fn main() {
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let stdout = io::stdout();
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let mut stdout = stdout.lock();
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let mut stderr = io::stderr();
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let mut parser = ArgParser::new(1)
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.add_flag(&["h", "help"]);
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parser.parse(env::args());
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if parser.found("help") {
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stdout.write_all(MAN_PAGE.as_bytes()).try(&mut stderr);
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stdout.flush().try(&mut stderr);
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exit(0);
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}
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let euid = get_euid().unwrap_or_exit(1);
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let users = AllUsers::new().unwrap_or_exit(1);
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let user = users.get_by_id(euid).unwrap_or_exit(1);
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println!("{}", user.user);
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exit(0);
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}
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