MggMuggins
84 lines
1.9 KiB
Rust
84 lines
1.9 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 extra::option::OptionalExt;
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use std::{io, env};
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use std::io::Write;
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use std::process::exit;
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use arg_parser::ArgParser;
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use redox_users::{add_group, get_unique_group_id};
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const MAN_PAGE: &'static str = /* @MANSTART{groupadd} */ r#"
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NAME
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groupadd - add a user group
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SYNOPSIS
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groupadd [ -f | --force ] group
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groupadd [ -h | --help ]
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DESCRIPTION
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The groupadd utility adds a new user group using values
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passed on the command line and system defaults.
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OPTIONS
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-f, --force
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Simply forces the exit status of the program to 0
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even if the group already exists. A message is still
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printed to stdout.
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-h, --help
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Display this help and exit.
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AUTHOR
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Written by Wesley Hershberger.
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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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.add_flag(&["f", "force"]);
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parser.parse(env::args());
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// Shows the help
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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 groupname = if parser.args.is_empty() {
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eprintln!("groupadd: no group name specified");
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exit(1);
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} else {
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&parser.args[0]
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};
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let gid = match get_unique_group_id() {
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Some(gid) => gid,
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None => {
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eprintln!("groupadd: no available gid");
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exit(1);
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}
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};
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match add_group(groupname, gid, &[""]) {
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Ok(_) => {},
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Err(ref err) if err.kind() == io::ErrorKind::AlreadyExists && parser.found("force") => {
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exit(0);
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},
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Err(err) => {
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eprintln!("groupadd: {}: group {}", err, groupname);
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exit(1);
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}
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}
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}
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