libzypp: zypp::media::MediaPlugin Class Reference

libzypp 17.38.7

zypp::media::MediaPlugin Class Reference

Implementation class for plugin MediaHandler. More...

`#include <zypp/media/MediaPlugin.h>`

Inheritance diagram for zypp::media::MediaPlugin:

## Public Member Functions
| MediaPlugin (const MirroredOrigin &origin_r, const Pathname &attach_point_hint_r)
| ~MediaPlugin () override
Public Member Functions inherited from zypp::media::MediaHandler
bool | dependsOnParent (MediaAccessId parentId, bool exactIdMatch)
| Check if the current media handler depends on an another handler specified by media access id.
bool | dependsOnParent ()
void | resetParentId ()
| Called in case, where the media manager takes over the destruction of the parent id (e.g.
Pathname | attachPoint () const
| Return the currently used attach point.
void | setAttachPoint (const Pathname &path, bool temp)
| Set a new attach point.
void | setAttachPoint (const AttachPointRef &ref)
| Set a (shared) attach point.
AttachPoint | attachPointHint () const
| Get the actual attach point hint.
void | attachPointHint (const Pathname &path, bool temp)
| Set the attach point hint as specified by the user.
Pathname | createAttachPoint () const
| Try to create a default / temporary attach point.
Pathname | createAttachPoint (const Pathname &attach_root) const
| Try to create a temporary attach point in specified root.
void | removeAttachPoint ()
| Remove unused attach point.
virtual bool | checkAttachPoint (const Pathname &apoint) const
| Verify if the specified directory as attach point (root) as requires by the particular media handler implementation.
bool | isUseableAttachPoint (const Pathname &path, bool mtab=true) const
| Ask media manager, if the specified path is already used as attach point or if there are another attach points bellow of it.
std::string | mediaSourceName () const
| Get the media source name or an empty string.
void | setMediaSource (const MediaSourceRef &ref)
| Set new media source reference.
AttachedMedia | findAttachedMedia (const MediaSourceRef &media) const
| Ask the media manager if specified media source is already attached.
AttachedMedia | attachedMedia () const
| Returns the attached media.
bool | isSharedMedia () const
| Returns a hint if the media is shared or not.
bool | checkAttached (bool matchMountFs) const
| Check actual mediaSource attachment against the current mount table of the system.
void | forceRelaseAllMedia (bool matchMountFs)
| Call to this function will try to release all media matching the currenlty attached media source, that it is able to find in the mount table.
void | forceRelaseAllMedia (const MediaSourceRef &ref, bool matchMountFs)
| MediaHandler (MirroredOrigin origin_r, const Pathname &attach_point_r, Pathname urlpath_below_attachpoint_r, const bool does_download_r)
| If the concrete media handler provides a nonempty attach_point, it must be an existing directory.
virtual | ~MediaHandler ()
| Contolling MediaAccess takes care, that attached media is released prior to deleting this.
bool | downloads () const
| Hint if files are downloaded or not.
std::string | protocol () const
| Protocol hint for MediaAccess.
const MirroredOrigin & | origin () const
| Access the internal MirroredOrigin (authority and mirrors).
Url | url () const
| Primary Url used.
OriginEndpoint | originEndpoint () const
| Primary OriginEndpoint used.
void | attach (bool next)
| Use concrete handler to attach the media.
virtual bool | isAttached () const
| True if media is attached.
Pathname | localRoot () const
| Return the local directory that corresponds to medias url, no matter if media isAttached or not.
Pathname | localPath (const Pathname &pathname) const
| Files provided will be available at 'localPath(filename)'.
void | disconnect ()
| Use concrete handler to isconnect media.
void | release (const std::string &ejectDev="")
| Use concrete handler to release the media.
void | provideFile (const OnMediaLocation &file) const
| Use concrete handler to provide file denoted by path below 'localRoot'.
void | provideFileCopy (const OnMediaLocation &srcFile, const Pathname &targetFilename) const
| Call concrete handler to provide a copy of a file under a different place in the file system (usually not under attach point) as a copy.
void | provideDir (const Pathname &dirname) const
| Use concrete handler to provide directory denoted by path below 'localRoot' (not recursive!).
void | provideDirTree (const Pathname &dirname) const
| Use concrete handler to provide directory tree denoted by path below 'localRoot' (recursive!
void | releaseFile (const Pathname &filename) const
| Remove filename below localRoot IFF handler downloads files to the local filesystem.
void | releaseDir (const Pathname &dirname) const
| Remove directory tree below localRoot IFF handler downloads files to the local filesystem.
void | releasePath (const Pathname &pathname) const
| Remove pathname below localRoot IFF handler downloads files to the local filesystem.
void | dirInfo (std::list< std::string > &retlist, const Pathname &dirname, bool dots=true) const
| Return content of directory on media via retlist.
void | dirInfo (filesystem::DirContent &retlist, const Pathname &dirname, bool dots=true) const
| Basically the same as dirInfo above.
bool | doesFileExist (const Pathname &filename) const
| check if a file exists
virtual bool | hasMoreDevices ()
| Check if the media has one more device available for attach(true).
virtual void | getDetectedDevices (std::vector< std::string > &devices, unsigned int &index) const
| Fill in a vector of detected ejectable devices and the index of the currently attached device within the vector.
virtual void | precacheFiles (const std::vector< OnMediaLocation > &files)
| Tries to fetch the given files and precaches them.

## Protected Member Functions
void | attachTo (bool next_r=false) override
| Call concrete handler to attach the media.
void | releaseFrom (const std::string &ejectDev_r) override
| Call concrete handler to release the media.
void | getFile (const OnMediaLocation &file) const override
| Call concrete handler to provide file below attach point.
void | getDir (const Pathname &dirname_r, bool recurse_r) const override
| Call concrete handler to provide directory content (not recursive!) below attach point.
void | getDirInfo (std::list< std::string > &retlist_r, const Pathname &dirname_r, bool dots_r=true) const override
| Call concrete handler to provide a content list of directory on media via retlist.
void | getDirInfo (filesystem::DirContent &retlist_r, const Pathname &dirname_r, bool dots_r=true) const override
| Basically the same as getDirInfo above.
bool | getDoesFileExist (const Pathname &filename_r) const override
| check if a file exists
Protected Member Functions inherited from zypp::media::MediaHandler
virtual void | disconnectFrom ()
| Call concrete handler to disconnect media.
virtual void | forceEject (const std::string &device)
| Call concrete handler to physically eject the media (i.e.
virtual void | getFileCopy (const OnMediaLocation &file, const Pathname &targetFilename) const
| Call concrete handler to provide a file under a different place in the file system (usually not under attach point) as a copy.
void | getDirectoryYast (std::list< std::string > &retlist, const Pathname &dirname, bool dots=true) const
| Retrieve and if available scan dirname/directory.yast.
void | getDirectoryYast (filesystem::DirContent &retlist, const Pathname &dirname, bool dots=true) const
| Retrieve and if available scan dirname/directory.yast.

## Additional Inherited Members
Public Types inherited from zypp::media::MediaHandler
using | Ptr = shared_ptr<MediaHandler>
using | constPtr = shared_ptr<const MediaHandler>
Static Public Member Functions inherited from zypp::media::MediaHandler
static bool | setAttachPrefix (const Pathname &attach_prefix)
static std::string | getRealPath (const std::string &path)
static Pathname | getRealPath (const Pathname &path)
static bool | checkAttachPoint (const Pathname &apoint, bool empty_dir, bool writeable)
| Verify if the specified directory as attach point (root) using requested checks.
Protected Attributes inherited from zypp::media::MediaHandler
MirroredOrigin | _origin
| Contains the authority URL and mirrors.
MediaAccessId | _parentId
| Access Id of media handler we depend on.

## Detailed Description

Implementation class for plugin MediaHandler.

See also
  MediaHandler

Definition at line 29 of file MediaPlugin.h.

## Constructor & Destructor Documentation

## ◆ MediaPlugin()

zypp::media::MediaPlugin::MediaPlugin | ( | const MirroredOrigin & | origin_r,
|  | const Pathname & | attach_point_hint_r )

Definition at line 31 of file MediaPlugin.cc.

## ◆ ~MediaPlugin()

zypp::media::MediaPlugin::~MediaPlugin | ( |  | ) |
| inlineoverride

Definition at line 34 of file MediaPlugin.h.

## Member Function Documentation

## ◆ attachTo()

void zypp::media::MediaPlugin::attachTo | ( | bool | next = false | ) |
| overrideprotectedvirtual

Call concrete handler to attach the media.

Asserted that not already attached, and attachPoint is a directory.

Parameters

  next | try next available device in turn until end of device list is reached (for media which are accessible through multiple devices like cdroms).

Exceptions

  MediaException |

Implements zypp::media::MediaHandler.

Definition at line 36 of file MediaPlugin.cc.

## ◆ releaseFrom()

void zypp::media::MediaPlugin::releaseFrom | ( | const std::string & | ejectDev | ) |
| overrideprotectedvirtual

Call concrete handler to release the media.

If eject is true, and the media is used in one handler instance only, physically eject the media (i.e. CD-ROM).

Asserted that media is attached.

Parameters

  ejectDev | Device to eject. None if empty.

Exceptions

  MediaException |

Implements zypp::media::MediaHandler.

Definition at line 39 of file MediaPlugin.cc.

## ◆ getFile()

void zypp::media::MediaPlugin::getFile | ( | const OnMediaLocation & | file | ) | const
| overrideprotectedvirtual

Call concrete handler to provide file below attach point.

Default implementation provided, that returns whether a file is located at 'localRoot + filename'.

Asserted that media is attached.

Exceptions

  MediaException |

Reimplemented from zypp::media::MediaHandler.

Definition at line 42 of file MediaPlugin.cc.

## ◆ getDir()

void zypp::media::MediaPlugin::getDir | ( | const Pathname & | dirname,
|  | bool | recurse_r ) const
| overrideprotectedvirtual

Call concrete handler to provide directory content (not recursive!) below attach point.

Return E_not_supported_by_media if media does not support retrieval of directory content.

Default implementation provided, that returns whether a directory is located at 'localRoot + dirname'.

Asserted that media is attached.

Exceptions

  MediaException |

Implements zypp::media::MediaHandler.

Definition at line 45 of file MediaPlugin.cc.

## ◆ getDirInfo() [1/2]

void zypp::media::MediaPlugin::getDirInfo | ( | std::list< std::string > & | retlist,
|  | const Pathname & | dirname,
|  | bool | dots = true ) const
| overrideprotectedvirtual

Call concrete handler to provide a content list of directory on media via retlist.

If dots is false entries starting with '.' are not reported.

Return E_not_supported_by_media if media does not support retrieval of directory content.

Default implementation provided, that returns the content of a directory at 'localRoot + dirnname' retrieved via 'readdir'.

Asserted that media is attached and retlist is empty.

Exceptions

  MediaException |

Implements zypp::media::MediaHandler.

Definition at line 48 of file MediaPlugin.cc.

## ◆ getDirInfo() [2/2]

void zypp::media::MediaPlugin::getDirInfo | ( | filesystem::DirContent & | retlist,
|  | const Pathname & | dirname,
|  | bool | dots = true ) const
| overrideprotectedvirtual

Basically the same as getDirInfo above.

The content list is returned as filesystem::DirContent, which includes name and filetype of each directory entry. Retrieving the filetype usg. requires an additional ::stat call for each entry, thus it's more expensive than a simple readdir.

Asserted that media is attached and retlist is empty.

Exceptions

  MediaException |

Implements zypp::media::MediaHandler.

Definition at line 51 of file MediaPlugin.cc.

## ◆ getDoesFileExist()

bool zypp::media::MediaPlugin::getDoesFileExist | ( | const Pathname & | filename | ) | const
| overrideprotectedvirtual

check if a file exists

Asserted that url is a file and not a dir.

Exceptions

  MediaException |

Implements zypp::media::MediaHandler.

Definition at line 54 of file MediaPlugin.cc.

The documentation for this class was generated from the following files:

- zypp/media/MediaPlugin.h
- zypp/media/MediaPlugin.cc