Struct FsCapabilities 

pub struct FsCapabilities {

    pub read_only: bool,
    pub case_sensitive: bool,
    pub case_preserving: bool,
    pub max_filename_len: usize,
    pub max_path_len: usize,
    pub supports_symlinks: bool,
    pub supports_hardlinks: bool,
    pub supports_sparse_files: bool,
    pub max_file_size: u64,
    pub supports_xattr: bool,
    pub supports_acl: bool,
    pub supports_nanoseconds: bool,
    pub supports_crtime: bool,
}

Filesystem capabilities.

These flags describe what features a filesystem supports. The VFS layer uses this information to:

• Reject unsupported operations early
• Adapt behavior (e.g., case sensitivity)
• Provide accurate information to applications

Fields

read_only: bool

Filesystem is read-only (no write operations allowed)

case_sensitive: bool

Filesystem is case-sensitive (Linux default)

case_preserving: bool

Filesystem preserves case even if not case-sensitive

max_filename_len: usize

Maximum filename length in bytes

max_path_len: usize

Maximum full path length in bytes

supports_symlinks: bool

Supports symbolic links

supports_hardlinks: bool

Supports hard links

supports_sparse_files: bool

Supports sparse files (holes in files)

max_file_size: u64

Maximum file size in bytes

supports_xattr: bool

Supports extended attributes (xattr)

supports_acl: bool

Supports POSIX ACLs

supports_nanoseconds: bool

Supports sub-second timestamp precision

supports_crtime: bool

Supports creation/birth time (crtime)

Implementations

impl FsCapabilities

pub const fn read_only_linux() -> Self

Create capabilities for a typical read-only Linux filesystem.

pub const fn writable_linux() -> Self

Create capabilities for a writable Linux filesystem.

pub const fn xfs() -> Self

Create default XFS capabilities.

pub const fn ext4() -> Self

Create default ext4 capabilities.

pub const fn btrfs() -> Self

Create default btrfs capabilities.

pub const fn can_write(&self) -> bool

Check if write operations are allowed.

Trait Implementations

impl Clone for FsCapabilities

fn clone(&self) -> FsCapabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FsCapabilities

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

Formats the value using the given formatter.

impl Default for FsCapabilities

fn default() -> Self

Implements default.