MggMuggins
d5e011a304
Here I've implemented the remainder of the core user utilities present on most unix systems. They aren't particularly pretty, but they do work for the most part. Note that for some reason attempting to move the home directory of a user via usermod -m does not work. Also removing user's that have been deleted from groups is not yet implemented, nor is updating /etc/passwd when a group id is changed. Note that redox_users as used by Cargo.lock as of this commit is broken, and may not work properly. If redox-os/users#11 is merged, cargo update should fix.
95 lines
2.3 KiB
Rust
95 lines
2.3 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::env;
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use std::io::{stdout, Write};
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use std::process::exit;
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use arg_parser::ArgParser;
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use extra::option::OptionalExt;
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use redox_users::AllGroups;
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const MAN_PAGE: &'static str = /* @MANSTART{groupmod} */ r#"
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NAME
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groupmod - modify group information
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SYNOPSYS
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groupmod [ options ] GROUP
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groupmod [ -h | --help ]
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DESCRIPTION
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groupmod modifies a user group GROUP in the system's
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redox_users backend.
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OPTIONS
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-h, --help
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Print this help page and exit.
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-g, --gid GID
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Change GROUP's group id. GID must be a non-negative
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decimal integer.
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Files with GROUP's old gid will not be updated.
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User's who use the old gid as their primary gid will
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also not be updated. This is a TODO and will change.
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-n, --name NAME
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The name of the group will be set to NAME
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AUTHORS
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Wesley Hershberger.
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"#; /* @MANEND */
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fn main() {
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let mut stdout = stdout();
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let mut parser = ArgParser::new(9)
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.add_flag(&["h", "help"])
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.add_opt("g", "gid")
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.add_opt("n", "name");
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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()).unwrap();
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stdout.flush().unwrap();
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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!("groupmod: no login 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 mut sys_groups = AllGroups::new().unwrap_or_exit(1);
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{
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let group = sys_groups.get_mut_by_name(groupname).unwrap_or_else(|| {
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eprintln!("groupmod: group does not exist: {}", groupname);
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exit(1);
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});
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//TODO: Update user's primary GID, if gid is used as such
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if let Some(gid) = parser.get_opt("gid") {
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let gid = gid.parse::<usize>().unwrap_or_exit(1);
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group.gid = gid;
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} else if parser.found("gid") {
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eprintln!("groupmod: no gid found");
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exit(1);
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}
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if let Some(name) = parser.get_opt("name") {
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group.group = name;
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} else if parser.found("name") {
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eprintln!("groupmod: no name found");
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exit(1);
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}
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}
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sys_groups.save().unwrap_or_exit(1);
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}
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