volume

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Interact with OS X filesystem volumes
This is distinct from hs.fs in that hs.fs deals with UNIX filesystem operations, while hs.fs.volume interacts with the higher level OS X concept of volumes
API Overview
Constants - Useful values which cannot be changed
​didMount​
​didRename​
​didUnmount​
​willUnmount​
Functions - API calls offered directly by the extension
​allVolumes​
​eject​
Constructors - API calls which return an object, typically one that offers API methods
​new​
Methods - API calls which can only be made on an object returned by a constructor
​start​
​stop​
API Documentation
Constants
​didMount​
Signature
hs.fs.volume.didMount
Type
Constant
Description
A volume was mounted
​didRename​
Signature
hs.fs.volume.didRename
Type
Constant
Description
A volume changed either its name or mountpoint (or more likely, both)
​didUnmount​
Signature
hs.fs.volume.didUnmount
Type
Constant
Description
A volume was unmounted
​willUnmount​
Signature
hs.fs.volume.willUnmount
Type
Constant
Description
A volume is about to be unmounted
Functions
​allVolumes​
Signature
hs.fs.volume.allVolumes([showHidden]) -> table
Type
Function
Description
Returns a table of information about disk volumes attached to the system
Parameters
showHidden - An optional boolean, true to show hidden volumes, false to not show hidden volumes. Defaults to false.
Returns
A table of information, where the keys are the paths of disk volumes
Notes
This is an alias for hs.host.volumeInformation()
The possible keys in the table are:
NSURLVolumeTotalCapacityKey - Size of the volume in bytes
NSURLVolumeAvailableCapacityKey - Available space on the volume in bytes
NSURLVolumeIsAutomountedKey - Boolean indicating if the volume was automounted
NSURLVolumeIsBrowsableKey - Boolean indicating if the volume can be browsed
NSURLVolumeIsEjectableKey - Boolean indicating if the volume should be ejected before its media is removed
NSURLVolumeIsInternalKey - Boolean indicating if the volume is an internal drive or an external drive
NSURLVolumeIsLocalKey - Boolean indicating if the volume is a local or remote drive
NSURLVolumeIsReadOnlyKey - Boolean indicating if the volume is read only
NSURLVolumeIsRemovableKey - Boolean indicating if the volume's media can be physically ejected from the drive (e.g. a DVD)
NSURLVolumeMaximumFileSizeKey - Maximum file size the volume can support, in bytes
NSURLVolumeUUIDStringKey - The UUID of volume's filesystem
NSURLVolumeURLForRemountingKey - For remote volumes, the network URL of the volume
NSURLVolumeLocalizedNameKey - Localized version of the volume's name
NSURLVolumeNameKey - The volume's name
NSURLVolumeLocalizedFormatDescriptionKey - Localized description of the volume
Not all keys will be present for all volumes
The meanings of NSURLVolumeIsEjectableKey and NSURLVolumeIsRemovableKey are not generally what they sound like. If you want a simple test as to whether or not a volume is a removable drive (e.g. a USB hard disk), check for NSURLVolumeIsInternalKey being false (this is what Finder does)
​eject​
Signature
hs.fs.volume.eject(path) -> boolean,string
Type
Function
Description
Unmounts and ejects a volume
Parameters
path - An absolute path to the volume you wish to eject
Returns
A boolean, true if the volume was ejected, otherwise false
A string, empty if the volume was ejected, otherwise it will contain the error message
Constructors
​new​
Signature
hs.fs.volume.new(fn) -> watcher
Type
Constructor
Description
Creates a watcher object for volume events
Parameters
fn - A function that will be called when volume events happen. It should accept two parameters:
An event type (see the constants defined above)
A table that will contain relevant information
Returns
An hs.fs.volume object
Methods
​start​
Signature
hs.fs.volume:start()
Type
Method
Description
Starts the volume watcher
Parameters
None
Returns
An hs.fs.volume object
​stop​
Signature
hs.fs.volume:stop()
Type
Method
Description
Stops the volume watcher
Parameters
None
Returns
An hs.fs.volume object