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use std::{fs::File, io::Result, path::Path};
use nix::unistd;
use super::ToIOResult;
pub struct SetEUID(unistd::Uid);
impl Drop for SetEUID {
fn drop(&mut self) {
unistd::seteuid(self.0).expect("failed to reset effective UID");
}
}
pub fn seteuid(uid: unistd::Uid) -> Result<SetEUID> {
let old_uid = unistd::geteuid();
unistd::seteuid(uid).to_io_result()?;
Ok(SetEUID(old_uid))
}
pub struct SetEGID(unistd::Gid);
impl Drop for SetEGID {
fn drop(&mut self) {
unistd::setegid(self.0).expect("failed to reset effective GID");
}
}
pub fn setegid(gid: unistd::Gid) -> Result<SetEGID> {
let old_gid = unistd::getegid();
unistd::setegid(gid).to_io_result()?;
Ok(SetEGID(old_gid))
}
pub fn create_as<P: AsRef<Path>>(
path: P,
uid: Option<unistd::Uid>,
gid: Option<unistd::Gid>,
) -> Result<File> {
let _setegid = gid.map(setegid).transpose()?;
let _seteuid = uid.map(seteuid).transpose()?;
File::create(path)
}
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