GenDisk

Defined in: src/fs/block_dev.ts:360

A disk, i.e. struct gendisk.

Adding one publishes it as /dev/<name> and /sys/block/<name>. Partitions of it get device numbers counting up from the disk’s own.

Constructors

Constructor

new GenDisk(init): GenDisk

Defined in: src/fs/block_dev.ts:397

Parameters

init

GenDiskInit

Returns

GenDisk

Properties

attrs

attrs: Record<string, DeviceAttribute> = {}

Defined in: src/fs/block_dev.ts:386

Attributes the driver adds to the disk in sysfs, on top of the ones every disk gets

---

diskseq

readonly diskseq: number

Defined in: src/fs/block_dev.ts:389

A number that is never reused, so a disk can be told apart from one that replaced it

---

first_minor

readonly first_minor: number = 0

Defined in: src/fs/block_dev.ts:366

The disk’s own minor, which its partitions count up from

---

hidden?

optional hidden?: boolean

Defined in: src/fs/block_dev.ts:375

Hidden disks exist but are not meant to be used directly, so udev ignores them

---

major

readonly major: number

Defined in: src/fs/block_dev.ts:361

---

minors

readonly minors: number = 0

Defined in: src/fs/block_dev.ts:369

How many minors are reserved for the disk and its partitions. 0 means partitions are numbered elsewhere.

---

name

readonly name: string

Defined in: src/fs/block_dev.ts:362

---

no_part?

optional no_part?: boolean

Defined in: src/fs/block_dev.ts:378

Whether the disk can be partitioned at all

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ops

readonly ops: BlockDeviceOperations

Defined in: src/fs/block_dev.ts:363

---

owner?

optional owner?: Module

Defined in: src/fs/block_dev.ts:380

---

parent?

optional parent?: Device<unknown>

Defined in: src/fs/block_dev.ts:383

The device this disk hangs off, e.g. its controller. Disks without one are virtual.

---

part0

readonly part0: BlockDevice

Defined in: src/fs/block_dev.ts:392

The whole disk, i.e. part0

---

parts

readonly parts: Map<number, BlockDevice>

Defined in: src/fs/block_dev.ts:395

Partitions, by partition number

---

read_only?

optional read_only?: boolean

Defined in: src/fs/block_dev.ts:372

---

removable?

optional removable?: boolean

Defined in: src/fs/block_dev.ts:371

Accessors

added

Get Signature

get added(): boolean

Defined in: src/fs/block_dev.ts:426

Whether the disk is currently in sysfs

Returns

boolean

---

capacity

Get Signature

get capacity(): number

Defined in: src/fs/block_dev.ts:417

How big the disk is, in sectors

Returns

number

Set Signature

set capacity(sectors): void

Defined in: src/fs/block_dev.ts:421

Parameters

sectors

number

Returns

void

Methods

[dispose]()

[dispose](): void

Defined in: src/fs/block_dev.ts:490

Returns

void

---

add()

add(): void

Defined in: src/fs/block_dev.ts:434

Publish the disk, i.e. add_disk.

Returns

void

Throws

EBUSY if the disk is already added, or something has its device number

---

add_partition()

add_partition(part_no, start, count): BlockDevice

Defined in: src/fs/block_dev.ts:460

Add a partition of the disk.

Parameters

part_no

number

start

number

where the partition starts, in sectors

count

number

how long the partition is, in sectors

Returns

BlockDevice

Throws

EINVAL if the disk can’t be partitioned, or the partition doesn’t fit on it

Throws

EBUSY if there is already a partition with this number

---

del()

del(): void

Defined in: src/fs/block_dev.ts:444

Remove the disk and every partition of it, i.e. del_gendisk.

Returns

void

---

del_partition()

del_partition(part_no): void

Defined in: src/fs/block_dev.ts:482

Remove a partition. Does nothing if there isn’t one with this number.

Parameters

part_no

number

Returns

void