Enum ListenFdsError 

pub enum ListenFdsError {
    NoListenFds,
    PidMissmatch {
        listen_pid: u64,
        self_pid: u64,
    },
    OutOfRangeListenFds,
    BadListenPid(ParseIntError),
    BadListenPidfdId(ParseIntError),
    BadListenFds(ParseIntError),
    BadListenFdNames,
}

Errors that can occur when retrieving socket-activated file descriptors.

Variants

NoListenFds

The process was not socket-activated.

This error occurs when the LISTEN_FDS environment variable is not present, indicating that systemd did not socket-activate this process.

PidMissmatch

The socket activation targets a different process.

This error occurs when the PID or pidfd ID in the environment variables does not match the current process, indicating the file descriptors were intended for a different process.

Fields

listen_pid: u64

self_pid: u64

OutOfRangeListenFds

The LISTEN_FDS value is out of valid range.

BadListenPid(ParseIntError)

The LISTEN_PID environment variable contains an invalid PID.

BadListenPidfdId(ParseIntError)

The LISTEN_PIDFDID environment variable contains an invalid pidfd ID.

BadListenFds(ParseIntError)

The LISTEN_FDS environment variable contains an invalid number.

BadListenFdNames

The number of names in LISTEN_FDNAMES doesn’t match the number of file descriptors.

Trait Implementations

impl Debug for ListenFdsError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ListenFdsError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for ListenFdsError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.