Struct ReflinkCloneCommand 

pub struct ReflinkCloneCommand { /* private fields */ }

Lightweight file copy: data extents are shared between source and target instead of physically copied. Subsequent modifications are copy-on-write, so reading from the clone is fast and storage is only consumed once until the files diverge.

With no -r flags, the entire source file is cloned to the target (which is created or truncated as needed). With one or more -r RANGESPEC flags, only those byte ranges are cloned into the target at the specified destination offsets and the existing target contents outside those ranges are preserved.

RANGESPEC has three parts: SRCOFF:LENGTH:DESTOFF, where SRCOFF is the byte offset in the source file, LENGTH is the number of bytes (0 = up to end-of-source), and DESTOFF is the byte offset in the target file. All three values accept the size suffix k/m/g/t/p/e (case-insensitive). Offsets and length must be block-aligned (typically 4 KiB) except when the source range reaches end-of-file.

Trait Implementations

impl Args for ReflinkCloneCommand

fn group_id() -> Option<Id>

Report the ArgGroup::id for this set of arguments

fn augment_args<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate Self via FromArgMatches::from_arg_matches_mut

fn augment_args_for_update<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate self via FromArgMatches::update_from_arg_matches_mut

impl CommandFactory for ReflinkCloneCommand

fn command<'b>() -> Command

Build a Command that can instantiate Self.

fn command_for_update<'b>() -> Command

Build a Command that can update self.

impl Debug for ReflinkCloneCommand

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

Formats the value using the given formatter.

impl FromArgMatches for ReflinkCloneCommand

fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

impl Parser for ReflinkCloneCommand

fn parse() -> Self

Parse from std::env::args_os(), exit on error.

fn try_parse() -> Result<Self, Error>

Parse from std::env::args_os(), return Err on error.

fn parse_from<I, T>(itr: I) -> Self

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, exit on error.

fn try_parse_from<I, T>(itr: I) -> Result<Self, Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, return Err on error.

fn update_from<I, T>(&mut self, itr: I)

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, exit on error.

fn try_update_from<I, T>(&mut self, itr: I) -> Result<(), Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, return Err on error.

impl Runnable for ReflinkCloneCommand

fn run(&self, ctx: &RunContext) -> Result<()>

Execute this command.

fn supported_formats(&self) -> &[Format]

Output formats this command supports.

fn supports_dry_run(&self) -> bool

Whether this command supports the global –dry-run flag.