Struct Xv6Riscv64Abi

pub struct Xv6Riscv64Abi {
    fd_to_handle: [Option<u32>; 1024],
    free_fds: Vec<usize>,
}

Fields

fd_to_handle: [Option<u32>; 1024]

File descriptor to handle mapping table (fd -> handle) None means the fd is not allocated

free_fds: Vec<usize>

Free file descriptor list for O(1) allocation/deallocation

Implementations

impl Xv6Riscv64Abi

pub fn allocate_fd(&mut self, handle: u32) -> Result<usize, &'static str>

Allocate a new file descriptor and map it to a handle

pub fn get_handle(&self, fd: usize) -> Option<u32>

Get handle from file descriptor

pub fn remove_fd(&mut self, fd: usize) -> Option<u32>

Remove file descriptor mapping

pub fn find_fd_by_handle(&self, handle: u32) -> Option<usize>

Find file descriptor by handle (linear search)

pub fn remove_handle(&mut self, handle: u32) -> Option<usize>

Remove handle mapping (requires linear search)

pub fn init_std_fds( &mut self, stdin_handle: u32, stdout_handle: u32, stderr_handle: u32, )

Initialize standard file descriptors (stdin, stdout, stderr)

pub fn fd_count(&self) -> usize

Get total number of allocated file descriptors

pub fn allocated_fds(&self) -> Vec<usize>

Get the list of allocated file descriptors (for debugging)

Trait Implementations

impl AbiModule for Xv6Riscv64Abi

fn name() -> &'static str

fn get_name(&self) -> String

fn clone_boxed(&self) -> Box<dyn AbiModule>

Clone this ABI module into a boxed trait object

fn handle_syscall( &mut self, trapframe: &mut Trapframe, ) -> Result<usize, &'static str>

fn can_execute_binary( &self, file_object: &KernelObject, file_path: &str, current_abi: Option<&dyn AbiModule>, ) -> Option<u8>

Determine if a binary can be executed by this ABI and return confidence

fn execute_binary( &self, file_object: &KernelObject, argv: &[&str], _envp: &[&str], task: &mut Task, trapframe: &mut Trapframe, ) -> Result<(), &'static str>

Binary execution (each ABI supports its own binary format)

fn get_default_cwd(&self) -> &str

Get default working directory for this ABI

fn setup_overlay_environment( &self, target_vfs: &Arc<VfsManager>, base_vfs: &Arc<VfsManager>, system_path: &str, config_path: &str, ) -> Result<(), &'static str>

Setup overlay environment for this ABI (read-only base + writable layer)

fn setup_shared_resources( &self, target_vfs: &Arc<VfsManager>, base_vfs: &Arc<VfsManager>, ) -> Result<(), &'static str>

Setup shared resources accessible across all ABIs

fn initialize_from_existing_handles( &self, task: &mut Task, ) -> Result<(), &'static str>

Handle conversion when switching ABIs

fn normalize_env_to_scarlet(&self, _envp: &mut Vec<String>)

Convert environment variables from this ABI to Scarlet canonical format (in-place)

fn denormalize_env_from_scarlet(&self, _envp: &mut Vec<String>)

Convert environment variables from Scarlet canonical format to this ABI’s format (in-place)

impl Clone for Xv6Riscv64Abi

fn clone(&self) -> Xv6Riscv64Abi

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for Xv6Riscv64Abi

fn default() -> Self

Returns the “default value” for a type.