sinjuginas/systemd-cron-next
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crontab: replace

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This commit is contained in:
Konstantin Stepanov 2015-07-21 19:23:45 +03:00
parent 3ae13cec17
commit d0442437fc
1 changed files with 22 additions and 3 deletions
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25
src/bin/crontab.rs
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@ -33,7 +33,6 @@ fn change_owner<P: AsRef<Path>>(path: P, owner: libc::uid_t, group: libc::gid_t)
}
static CRONTAB_DIR: &'static str = "/var/spool/cron";
static REBOOT_FILE: &'static str = "/run/crond.reboot";
static USAGE: &'static str = r#"
Usage: crontab [-u <user>] -l
@ -180,7 +179,7 @@ fn edit(cron_file: &Path, _args: &Args) -> i32 {
tmpfile.flush().unwrap();
{
let (uid, gid) = (users::get_current_uid(), users::get_current_gid());
change_owner(tmpfile.path(), uid, gid);
change_owner(tmpfile.path(), uid, gid).unwrap(); // TODO: user from args.flag_user
let _guard = users::switch_user_group(uid, gid);
match Command::new(editor).arg(tmpfile.path()).status() {
Ok(status) if status.success() => (),
@ -202,7 +201,27 @@ fn edit(cron_file: &Path, _args: &Args) -> i32 {
}
fn replace(cron_file: &Path, args: &Args) -> i32 {
unimplemented!();
let mut tmpfile = NamedTempFile::new_in(CRONTAB_DIR).unwrap();
match args.arg_file {
Some(ref name) if &**name == "-" => { stdin().tee(&mut tmpfile).bytes().count(); },
Some(ref name) => { File::open(&**name).unwrap().tee(&mut tmpfile).bytes().count(); },
None => unreachable!()
}
tmpfile.flush().unwrap();
// TODO: check tmpfile syntax
if let Err(e) = tmpfile.persist(cron_file) {
writeln!(stderr(), "error renaming {} to {}: {}", e.file.path().display(), cron_file.display(), e.error).unwrap();
return 1;
}
// TODO: user from args.flag_user
change_owner(cron_file, users::get_current_uid(), users::get_current_gid()).unwrap();
0
}
fn main() {