diff options
Diffstat (limited to 'vendor/redox_syscall/src/daemon.rs')
-rw-r--r-- | vendor/redox_syscall/src/daemon.rs | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/vendor/redox_syscall/src/daemon.rs b/vendor/redox_syscall/src/daemon.rs deleted file mode 100644 index 6433bcd7d..000000000 --- a/vendor/redox_syscall/src/daemon.rs +++ /dev/null @@ -1,62 +0,0 @@ -use core::convert::Infallible; - -use super::{ - clone, - CloneFlags, - close, - EIO, - Error, - exit, - pipe2, - read, - Result, - write, -}; - -#[must_use = "Daemon::ready must be called"] -pub struct Daemon { - write_pipe: usize, -} - -impl Daemon { - pub fn new<F: FnOnce(Daemon) -> Infallible>(f: F) -> Result<Infallible> { - let mut pipes = [0; 2]; - pipe2(&mut pipes, 0)?; - - let [read_pipe, write_pipe] = pipes; - - if unsafe { clone(CloneFlags::empty())? } == 0 { - let _ = close(read_pipe); - - f(Daemon { - write_pipe, - }); - // TODO: Replace Infallible with the never type once it is stabilized. - unreachable!(); - } else { - let _ = close(write_pipe); - - let mut data = [0]; - let res = read(read_pipe, &mut data); - let _ = close(read_pipe); - - if res? == 1 { - exit(data[0] as usize)?; - unreachable!(); - } else { - Err(Error::new(EIO)) - } - } - } - - pub fn ready(self) -> Result<()> { - let res = write(self.write_pipe, &[0]); - let _ = close(self.write_pipe); - - if res? == 1 { - Ok(()) - } else { - Err(Error::new(EIO)) - } - } -} |