Struct ProcScheme 

pub struct ProcScheme {}

Procfs scheme

Implementations

impl ProcScheme

pub fn new() -> Self

Creates a new instance.

fn get_entry(&self, path: &str) -> Result<ProcEntry, SyscallError>

Get procfs entry content

fn get_process_entry( &self, pid: u64, subpath: &str, ) -> Result<ProcEntry, SyscallError>

Get process-specific entry

fn get_cpuinfo(&self) -> String

Generate /proc/cpuinfo content from actual CPUID data.

fn get_meminfo(&self) -> String

Generate /proc/meminfo content

fn get_version(&self) -> String

Generate /proc/version content

fn get_silos(&self) -> String

Generate /proc/silos content

fn get_process_status(&self, task: &Arc<Task>) -> String

Generate process status

impl ProcScheme

fn encode_id(kind: u64, pid: u64) -> u64

Encode a (kind, pid) pair into a file_id.

The high 32 bits hold the kind; the low 32 bits hold the pid. This guarantees no collision between entries regardless of PID value.

fn decode_id(id: u64) -> (u64, u64)

Decode a file_id back into (kind, pid).

Trait Implementations

impl Scheme for ProcScheme

fn open( &self, path: &str, _flags: OpenFlags, ) -> Result<OpenResult, SyscallError>

Performs the open operation.

fn read( &self, file_id: u64, offset: u64, buf: &mut [u8], ) -> Result<usize, SyscallError>

Performs the read operation.

fn write( &self, _file_id: u64, _offset: u64, _buf: &[u8], ) -> Result<usize, SyscallError>

Performs the write operation.

fn close(&self, _file_id: u64) -> Result<(), SyscallError>

Performs the close operation.

fn stat(&self, file_id: u64) -> Result<FileStat, SyscallError>

Performs the stat operation.

fn readdir(&self, file_id: u64) -> Result<Vec<DirEntry>, SyscallError>

Performs the readdir operation.

fn async_read( &self, file_id: u64, offset: u64, user_buf_vaddr: u64, len: usize, _ring_id: u64, _user_data: u64, ) -> Result<AsyncSubmitResult, SyscallError>

Submit a read against a userspace buffer for async I/O.

fn async_write( &self, file_id: u64, offset: u64, user_buf_vaddr: u64, len: usize, _ring_id: u64, _user_data: u64, ) -> Result<AsyncSubmitResult, SyscallError>

Submit a write sourced from a userspace buffer for async I/O.

fn size(&self, file_id: u64) -> Result<u64, SyscallError>

Get file size (if supported).

fn truncate(&self, file_id: u64, new_size: u64) -> Result<(), SyscallError>

Truncate/resize a file (if supported).

fn truncate_by_path( &self, _path: &str, _new_size: u64, ) -> Result<(), SyscallError>

Truncate a file by path (avoids open/close round-trip).

fn sync(&self, file_id: u64) -> Result<(), SyscallError>

Sync file to storage (if applicable).

fn create_file(&self, path: &str, mode: u32) -> Result<OpenResult, SyscallError>

Create a new regular file.

fn create_directory( &self, path: &str, mode: u32, ) -> Result<OpenResult, SyscallError>

Create a new directory.

fn unlink(&self, path: &str) -> Result<(), SyscallError>

Remove a file or directory.

fn rename(&self, old_path: &str, new_path: &str) -> Result<(), SyscallError>

Rename/move an entry within this scheme.

fn chmod(&self, path: &str, mode: u32) -> Result<(), SyscallError>

Change permission bits on a path.

fn fchmod(&self, file_id: u64, mode: u32) -> Result<(), SyscallError>

Change permission bits on an open file handle.

fn link(&self, old_path: &str, new_path: &str) -> Result<(), SyscallError>

Create a hard link.

fn symlink(&self, target: &str, link_path: &str) -> Result<(), SyscallError>

Create a symbolic link.

fn readlink(&self, path: &str) -> Result<String, SyscallError>

Read the target of a symbolic link.