Trait FSVolumePathConfOperations

pub unsafe trait FSVolumePathConfOperations: NSObjectProtocol {
    // Provided methods
    unsafe fn maximumLinkCount(&self) -> NSInteger
       where Self: Sized + Message { ... }
    unsafe fn maximumNameLength(&self) -> NSInteger
       where Self: Sized + Message { ... }
    unsafe fn restrictsOwnershipChanges(&self) -> bool
       where Self: Sized + Message { ... }
    unsafe fn truncatesLongNames(&self) -> bool
       where Self: Sized + Message { ... }
    unsafe fn maximumXattrSize(&self) -> NSInteger
       where Self: Sized + Message { ... }
    unsafe fn maximumXattrSizeInBits(&self) -> NSInteger
       where Self: Sized + Message { ... }
    unsafe fn maximumFileSize(&self) -> u64
       where Self: Sized + Message { ... }
    unsafe fn maximumFileSizeInBits(&self) -> NSInteger
       where Self: Sized + Message { ... }
}

Available on crate feature FSVolume only.

Properties implemented by volumes that support providing the values of system limits or options.

This protocol gathers properties related to the pathconf and fpathconf system calls.

For a file, the value of a property applies to just that file; for a directory, the value applies to all items in the directory.

Properties that represent limits and have a numeric type use -1 to represent no limit.

See also Apple’s documentation

Provided Methods

unsafe fn maximumLinkCount(&self) -> NSInteger

where Self: Sized + Message,

A property that represents the maximum number of hard links to the object.

unsafe fn maximumNameLength(&self) -> NSInteger

where Self: Sized + Message,

A property that represents the maximum length of a component of a filename.

unsafe fn restrictsOwnershipChanges(&self) -> bool

where Self: Sized + Message,

A Boolean property that indicates whether the volume restricts ownership changes based on authorization.

If this value is true, the volume rejects a chown(2) from anyone other than the superuser.

unsafe fn truncatesLongNames(&self) -> bool

where Self: Sized + Message,

A property that indicates whether the volume truncates files longer than its maximum supported length.

If this value is true, the volume truncates the filename to maximumNameLength if the filename is longer than that. If this value is false, the file system responds with the error code ENAMETOOLONG if the filename is longer than maximumNameLength.

unsafe fn maximumXattrSize(&self) -> NSInteger

where Self: Sized + Message,

The maximum extended attribute size in bytes.

Implement at least one of maximumXattrSize or maximumXattrSizeInBits. FSKit automatically converts from one to another if needed. If you implement both, FSKit uses only the maximumXattrSizeInBits implementation.

unsafe fn maximumXattrSizeInBits(&self) -> NSInteger

where Self: Sized + Message,

The maximum extended attribute size in bits.

Implement at least one of maximumXattrSize or maximumXattrSizeInBits. FSKit automatically converts from one to another if needed. If you implement both, FSKit uses only the maximumXattrSizeInBits implementation.

unsafe fn maximumFileSize(&self) -> u64

where Self: Sized + Message,

The maximum size of a regular file allowed in the volume.

Implement at least one of maximumFileSize or maximumFileSizeInBits. FSKit automatically converts from one to another if needed. If you implement both, FSKit uses only the maximumFileSizeInBits implementation.

unsafe fn maximumFileSizeInBits(&self) -> NSInteger

where Self: Sized + Message,

The minimum number of bits needed to represent, as a signed integer value, the maximum size of a regular file allowed in the volume.

The maximum file size is 2^(maximumFileSizeInBits - 1).

Maximum file size (bytes)	Maximum (in hex)	Unsigned bits	Signed bits
65,535	0xFFFF	16	17
2,147,483,647	0x7FFFFFFF	31	32
4,294,967,295	0xFFFFFFFF	32	33
18,446,744,073,709,551,615	0xFFFFFFFFFFFFFFFF	64	65

Implement at least one of maximumFileSize or maximumFileSizeInBits. FSKit automatically converts from one to another if needed. If you implement both, FSKit uses only the maximumFileSizeInBits implementation.

Trait Implementations

impl ProtocolType for dyn FSVolumePathConfOperations

const NAME: &'static str = "FSVolumePathConfOperations"

The name of the Objective-C protocol that this type represents.

fn protocol() -> Option<&'static AnyProtocol>

Get a reference to the Objective-C protocol object that this type represents.

impl<T> ImplementedBy<T> for dyn FSVolumePathConfOperations

where T: ?Sized + Message + FSVolumePathConfOperations,

Implementations on Foreign Types

impl<T> FSVolumePathConfOperations for ProtocolObject<T>

where T: ?Sized + FSVolumePathConfOperations,

Implementors