org.freedesktop.UDisks2.Job: UDisks Reference Manual

## org.freedesktop.UDisks2.Job org.freedesktop.UDisks2.Job — Long-running tasks |

## Methods

    Cancel (IN  a{sv} options);

## Signals

    Completed (b success,
               s message);

## Properties

    Operation        readable   s
    Progress         readable   d
    ProgressValid    readable   b
    Bytes            readable   t
    Rate             readable   t
    StartTime        readable   t
    ExpectedEndTime  readable   t
    Objects          readable   ao
    StartedByUID     readable   u
    Cancelable       readable   b

## Description

Some operations may take a long time (hours) to complete, that is, to actually send the D-Bus reply message back. One example of such an operation is the Format() method that is used to format a block device.

When such operations are initated, a job object implementing this interface may be created so the progress can be tracked by the caller (and also other observers).

The object(s) that a job affects (such as block devices or drives) can be determined by looking at the "Objects" property. Among other things, this can be used to draw a spinner in the user interface next to e.g. an icon for the drive or device in question.

The "Operation" property is used to convey the type of job currently in progress.

The user id of the user who started the job is set in the "StartedByUID" property.

A job may convey how much progress has been made, see the "Progress" and "ProgressValid" properties.

When a job completes, the "Completed" signal is emitted.

A job may or may not be cancelable, see the "Cancelable" property. To cancel a job use the Cancel() method. This will cause the job to complete (with `success` set to `FALSE`) and the D-Bus method used to initiate the operation to return, usually returning the `org.freedesktop.UDisks2.Error.Cancelled` error. Once cancellation is requested it may take some time before the job is actually completed as there might be ongoing I/O.

## Method Details

### The Cancel() method

    Cancel (IN  a{sv} options);

Cancels the job. Fails with the `org.freedesktop.UDisks2.Error.Failed` error if "Cancelable" is `FALSE`.

`IN a{sv} `options``: | Options (currently unused except for standard options).

## Signal Details

### The "Completed" signal

    Completed (b success,
               s message);

Emitted when a job completes.

`b `success``: | If `TRUE`, the job completed successfully.
`s `message``: | A message describing the completion of the job, e.g. an error message.

## Property Details

### The "Operation" property

    Operation  readable   s

The type of the operation that the job represents.

Known job operation types include:

ata-smart-selftest | SMART self-test operation.
drive-eject | Ejecting the medium from a drive.
encrypted-unlock | Unlocking encrypted device.
encrypted-lock | Locking encrypted device.
encrypted-modify | Modifying encrypted device.
encrypted-resize | Resizing encrypted device.
swapspace-start | Starting swapspace.
swapspace-stop | Stopping swapspace.
swapspace-modify | Modifying swapspace.
filesystem-mount | Mounting a filesystem.
filesystem-unmount | Unmounting a filesystem.
filesystem-modify | Modifying a filesystem.
filesystem-resize | Resizing a filesystem.
format-erase | Erasing a device.
format-mkfs | Creating a filesystem.
loop-setup | Setting up a loop device.
partition-modify | Modifying a partition.
partition-delete | Deleting a partition.
partition-create | Creating a partition.
cleanup | Cleaning up devices that were removed without being properly unmounted or shut down.
ata-secure-erase | ATA Secure Erase.
ata-enhanced-secure-erase | ATA Enhanced Secure Erase.
md-raid-stop | Stopping a RAID Array.
md-raid-start | Starting a RAID Array.
md-raid-fault-device | Marking device in RAID Array as faulty.
md-raid-remove-device | Removing device from RAID Array.
md-raid-create | Create a RAID Array.

The udisks_client_get_job_description() function can be used to get a localized human readable description.

### The "Progress" property

    Progress  readable   d

How much progress has been made. Values are in the range 0 to 1.

Do not use unless "ProgressValid" is `TRUE`.

### The "ProgressValid" property

    ProgressValid  readable   b

Set to `TRUE` if the "Progress" is valid.

### The "Bytes" property

    Bytes  readable   t

If the job involves processing a known number of bytes (for example, erasing a disk), this property contains the total number of bytes to process. If not, the value of this property is zero.

The intent of this property is for user interfaces to convey information such as “123 GB of 1.0 TB completed”.

Since 2.0.0

### The "Rate" property

    Rate  readable   t

If the job involves processing a number of bytes (for example, erasing) and the rate at which the processing takes place is known, this property contains the rate (measured in bytes per second). Otherwise the value of this property is zero.

The intent of this property is for user interfaces to convey information such as “110 MB/sec”.

Since 2.0.0

### The "StartTime" property

    StartTime  readable   t

The point in time (micro-seconds since the Unix Epoch) that the job was started.

### The "ExpectedEndTime" property

    ExpectedEndTime  readable   t

The expected point in time (micro-seconds since the Unix Epoch) that the job will complete or 0 if unknown.

### The "Objects" property

    Objects  readable   ao

The objects that the job is related to, if any.

### The "StartedByUID" property

    StartedByUID  readable   u

The id of the user who started the job or 0 if started by root or not through udisks.

### The "Cancelable" property

    Cancelable  readable   b

Whether the job can be canceled.