Enum ShellDialect 

pub enum ShellDialect {
    Posix,
    WindowsCmd,
    PowerShell,
    None,
}

Shell language understood by a runtime’s command builder.

This is part of the execution boundary: security policy must validate the same language that RuntimeAdapter::build_shell_command will interpret.

The command-risk policy needs this to apply platform-specific safety rules — notably the null device: a POSIX shell treats nul as an ordinary relative filename (so echo x >nul would create/truncate a workspace file), while Windows cmd.exe resolves it to the discard-only null device. A redirect to nul is therefore only safe under ShellDialect::WindowsCmd.

The dialect follows the effective execution sink, not merely the host OS. Docker always runs through sh -c and stays ShellDialect::Posix even on a Windows host. Native cron execution follows the configured runtime dialect.

Variants

Posix

POSIX sh/bash semantics — Unix native execution and Docker sh -c. The conservative default.

WindowsCmd

Windows cmd.exe semantics — native execution on a Windows host.

PowerShell

Windows PowerShell or PowerShell 7+.

None

The runtime does not expose shell execution.

Trait Implementations

impl Clone for ShellDialect

fn clone(&self) -> ShellDialect

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ShellDialect

impl Debug for ShellDialect

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

Formats the value using the given formatter.

impl Default for ShellDialect

fn default() -> ShellDialect

Returns the “default value” for a type.

impl Eq for ShellDialect

impl PartialEq for ShellDialect

fn eq(&self, other: &ShellDialect) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ShellDialect