Struct Capabilities

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pub struct Capabilities {Show 15 fields
    pub atomic_writes: AtomicBool,
    pub atomic_min_bytes: AtomicU32,
    pub atomic_max_bytes: AtomicU32,
    pub uncached_io: AtomicBool,
    pub exchange_range: AtomicBool,
    pub reflink: AtomicBool,
    pub seek_hole: AtomicBool,
    pub btrfs_subvol: AtomicBool,
    pub btrfs_quotas: AtomicBool,
    pub f2fs_atomic_legacy: AtomicBool,
    pub is_nfs: AtomicBool,
    pub dio_mem_align: AtomicU32,
    pub dio_offset_align: AtomicU32,
    pub dm_stack: Option<DmStackInfo>,
    pub container: Option<ContainerInfo>,
}

Expand description

Filesystem and hardware capabilities detected by probe_capabilities

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§atomic_writes: AtomicBool

Hardware supports RWF_ATOMIC writes

§atomic_min_bytes: AtomicU32

Minimum atomic write unit in bytes

§atomic_max_bytes: AtomicU32

Maximum atomic write unit in bytes

§uncached_io: AtomicBool

Kernel supports RWF_UNCACHED (bypass page cache)

§exchange_range: AtomicBool

Filesystem supports RENAME_EXCHANGE or atomic exchange ioctl

§reflink: AtomicBool

Filesystem supports FICLONE (CoW reflink)

§seek_hole: AtomicBool

Filesystem supports SEEK_HOLE/SEEK_DATA for sparse file mapping

§btrfs_subvol: AtomicBool

Btrfs subvolume operations available

§btrfs_quotas: AtomicBool

Btrfs qgroups (quota groups) detected

§f2fs_atomic_legacy: AtomicBool

F2FS legacy atomic write ioctl available

§is_nfs: AtomicBool

Filesystem is NFS (magic 0x6969)

§dio_mem_align: AtomicU32

STATX_DIOALIGN: memory alignment required for O_DIRECT

§dio_offset_align: AtomicU32

STATX_DIOALIGN: file offset alignment required for O_DIRECT

§dm_stack: Option<DmStackInfo>

Device-mapper stack layers beneath this filesystem

§container: Option<ContainerInfo>

Container runtime environment, if any

Trait Implementations§

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impl Default for Capabilities

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for Capabilities

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more

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impl<T> From<T> for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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