Function nix::unistd::daemon

pub fn daemon(nochdir: bool, noclose: bool) -> Result<()>

Daemonize this process by detaching from the controlling terminal (see daemon(3)).

When a process is launched it is typically associated with a parent and it, in turn, by its controlling terminal/process. In order for a process to run in the “background” it must daemonize itself by detaching itself. Under posix, this is done by doing the following:

1. Parent process (this one) forks
2. Parent process exits
3. Child process continues to run.

nochdir:

• nochdir = true: The current working directory after daemonizing will be the current working directory.
• nochdir = false: The current working directory after daemonizing will be the root direcory, /.

noclose:

• noclose = true: The process’ current stdin, stdout, and stderr file descriptors will remain identical after daemonizing.
• noclose = false: The process’ stdin, stdout, and stderr will point to /dev/null after daemonizing.