Struct Printf 

pub struct Printf {
    pub facility: Arc<Mutex<sudo_printf_non_null_t>>,
    pub level: u32,
}

A facility implementing std::io::Write that allows printing output to the user invoking sudo. Technically, the user may not be present on a local tty, but this will be wired up to a printf-like function that outputs to either STDOUT or STDERR.

Fields

facility: Arc<Mutex<sudo_printf_non_null_t>>

A non-null function pointer to a sudo_printf_t printf facility

level: u32

A sudo_conv_message bitflag to indicate how and where the message should be printed.

Implementations

impl Printf

pub fn write_error(&mut self, tag: &[u8], error: &Error) -> Result<()>

Writes a formatted error to the user via the configured facility.

Trait Implementations

impl Debug for Printf

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

Formats the value using the given formatter.

impl Write for Printf

fn write(&mut self, buf: &[u8]) -> Result<usize>

Writes a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

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

Determines if this Writer has an efficient write_vectored implementation.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

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

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.