Inheritance diagram for MemFdFile:
Collaboration diagram for MemFdFile:
Public Member Functions | |
| MemFdFile (const String &name, bool allowSealing, size_t uid, size_t gid) | |
| Attributes | getAttributes () const override |
| int | getSeals () |
| int | addSeals (unsigned seals) |
| bool | allowMapping (bool shared, bool writeRequested, bool &mayWrite) override |
| Public Member Functions inherited from RamFile | |
| RamFile (const String &name, uintptr_t inode, Filesystem *pParentFS, File *pParent) | |
| bool | addLink () |
| void | removeLink () |
| XattrStatus | getExtendedAttribute (const StringView &name, void *buffer, size_t capacity, size_t &required) override |
| XattrStatus | listExtendedAttributes (void *buffer, size_t capacity, size_t &required) override |
| XattrStatus | setExtendedAttribute (const StringView &name, const void *value, size_t length, unsigned flags) override |
| XattrStatus | removeExtendedAttribute (const StringView &name) override |
| virtual void | truncate () override |
| bool | canWrite () |
| Public Member Functions inherited from File | |
| File () | |
| File (const String &name, Time::Timestamp accessedTime, Time::Timestamp modifiedTime, Time::Timestamp creationTime, uintptr_t inode, class Filesystem *pFs, size_t size, File *pParent) | |
| virtual | ~File () |
| virtual uint64_t | read (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true) final |
| size_t | readCached (uint64_t location, size_t size, uintptr_t buffer, bool(*prepare)(uintptr_t, size_t)=nullptr) |
| virtual uint64_t | write (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true) final |
| uint64_t | append (uint64_t size, uintptr_t buffer, uint64_t &location, bool bCanBlock=true) |
| WriteGuard | lockWrites () |
| virtual physical_uintptr_t | getPhysicalPage (size_t offset) |
| virtual bool | isDirectPhysicalMapping () const |
| virtual void | returnPhysicalPage (size_t offset) |
| virtual bool | tryBeginMappingRelease () |
| void | endMappingRelease () |
| bool | syncAndReturnPhysicalPage (size_t offset, bool async) |
| virtual bool | sync () |
| bool | syncRange (size_t offset, size_t length) |
| virtual bool | sync (size_t offset, bool async) |
| virtual bool | syncPages (const uint64_t *offsets, size_t count) |
| Time::Timestamp | getCreationTime () |
| void | setCreationTime (Time::Timestamp t) |
| Time::Timestamp | getAccessedTime () |
| void | setAccessedTime (Time::Timestamp t) |
| Time::Timestamp | getModifiedTime () |
| void | setModifiedTime (Time::Timestamp t) |
| void | setTimes (Time::Timestamp accessed, Time::Timestamp modified, bool changeAccessed, bool changeModified) |
| virtual bool | prepareSharedMapping (size_t offset, size_t length) |
| String | getName () const |
| void | getName (String &s) const |
| virtual void | getFullPath (String &result, bool bWithMount=true) |
| virtual String | getFullPath (bool bWithMount=true) |
| bool | resize (size_t size) |
| virtual size_t | getSize () |
| void | setSize (size_t sz) |
| virtual bool | isSymlink () |
| virtual bool | isDirectory () |
| virtual bool | isBlockDevice () const |
| virtual uint64_t | deviceNumber () const |
| virtual bool | isPipe () const |
| virtual bool | isFifo () const |
| virtual bool | isSocket () const |
| virtual bool | isSeekable () const |
| bool | supportsRegularFileOperations () |
| virtual uint64_t | maximumFileSize () const |
| bool | acquireMappingUse (bool executable, bool sharedWrite) |
| void | releaseMappingUse (bool executable, bool sharedWrite) |
| uintptr_t | getInode () const |
| virtual void | setInode (uintptr_t inode) |
| virtual uintptr_t | futexIdentity () |
| Filesystem * | getFilesystem () const |
| void | setFilesystem (Filesystem *pFs) |
| virtual void | fileAttributeChanged () |
| void | publishEvent (FileEventMask mask, const StringView &name=StringView(), bool targetIsDirectory=false) |
| virtual FileHandleStatus | subscribeInodeEvents (FileEventMask mask, const SharedPointer< FileEventObserver > &observer, FileEventSubscription &subscription) |
| virtual void | finishInodeRetirement () |
| virtual void | increaseRefCount (bool bIsWriter) |
| virtual void | decreaseRefCount (bool bIsWriter) |
| virtual bool | retainVfsReference () |
| virtual void | releaseVfsReference () |
| virtual bool | isStableVfsRoot () const |
| void | setPermissions (uint32_t perms) |
| uint32_t | getPermissions () const |
| bool | setOwnership (size_t uid, size_t gid, bool changeUid, bool changeGid) |
| void | setUid (size_t uid) |
| size_t | getUid () const |
| void | setGid (size_t gid) |
| size_t | getGid () const |
| File * | getParent () const |
| void | getNamespace (ParentLease &parent, String &name) const |
| virtual int | select (bool bWriting=false, int timeout=0) |
| virtual ReadyMask | queryReady (bool reading, bool writing) |
| virtual bool | supportsReadinessNotifications () const |
| void | monitor (Thread *pThread, Event *pEvent) |
| void | cullMonitorTargets (Thread *pThread) |
| void | cullMonitorTargets (Event *pEvent) |
| virtual bool | supports (const size_t command) const |
| virtual int | command (const size_t command, void *buffer) |
| virtual size_t | getBlockSize () const |
| void | markPageExternallyWritable (size_t offset) |
| size_t | populateRange (size_t offset, size_t length) |
| void | enableDirect () |
| void | disableDirect () |
| virtual void | preallocate (size_t expectedSize, bool zero=true) |
| bool | allocateRange (size_t offset, size_t length, bool keepSize=false) |
| virtual File * | open () |
| virtual File * | openForDescriptor (RetainedFile &owner) |
| Public Member Functions inherited from ReadinessSource | |
| MUST_USE_RESULT bool | subscribeReadiness (ReadyMask interest, const SharedPointer< ReadinessObserver > &observer, ReadinessSubscription &subscription) |
| virtual ReadinessGenerations | readinessGenerations () |
| Public Member Functions inherited from FileEventSource | |
| MUST_USE_RESULT bool | subscribeFileEvents (FileEventMask interest, const SharedPointer< FileEventObserver > &observer, FileEventSubscription &subscription) |
Static Public Member Functions | |
| static MemFdFile * | fromFile (File *file) |
Protected Member Functions | |
| bool | prepareWrite (uint64_t location, uint64_t size) override |
| bool | allowResize (size_t oldSize, size_t newSize) override |
| Protected Member Functions inherited from RamFile | |
| virtual bool | resizeFile (size_t size) override |
| virtual bool | allocateFileRange (size_t offset, size_t length) override |
| virtual bool | prepareShrink (const ShrinkContext &context, UniquePointer< PreparedShrink > &prepared) override |
| virtual uintptr_t | readBlock (uint64_t location) override |
| virtual bool | pinBlock (uint64_t location) override |
| uintptr_t | acquireCachedBlock (uint64_t location, bool retryChanged) override |
| virtual void | unpinBlock (uint64_t location) override |
| Protected Member Functions inherited from File | |
| virtual void | updateAttributes (const Attributes &attributes, uint32_t mask) |
| virtual bool | changeOwnership (size_t uid, size_t gid, bool changeUid, bool changeGid) |
| virtual bool | allowPhysicalPage () const |
| virtual Mutex & | writeSerializationLock () |
| virtual Mutex & | dataMutationLock () |
| virtual size_t & | physicalPageLoans () |
| bool | clearDataCache () |
| virtual bool | isBytewise () const |
| virtual uint64_t | readBytewise (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true) |
| virtual uint64_t | writeBytewise (uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock=true) |
| virtual bool | readPage (uint64_t location, uintptr_t destination) |
| virtual bool | readPages (ReadPage *pages, size_t count) |
| virtual void | writeBlock (uint64_t location, uintptr_t addr) |
| virtual void | writeBlocks (uint64_t location, uintptr_t addr, size_t length) |
| virtual void | extend (size_t newSize) |
| virtual void | extend (size_t newSize, uint64_t location, uint64_t size) |
| virtual void | publishInodeEvent (const FileEvent &event) |
| void | dataChanged () |
| void | getFilesystemLabel (HugeStaticString &s) |
| void | enableFillCacheWriteback () |
| void | shutdownFillCacheWriteback () |
| bool | syncFillCache (size_t offset, bool async, bool &present) |
| virtual bool | useFillCache () const |
| void | evict (uint64_t location) |
| void | setPermissionsOnly (uint32_t perms) |
| void | setUidOnly (size_t uid) |
| void | setGidOnly (size_t gid) |
| void | retainDetachedParent () |
| void | moveNamespace (const String &name, File *parent) |
| bool | snapshotNamespace (ParentLease &parent, String &name, FileEventMask interest) const |
| virtual CacheState & | cacheState () |
| Protected Member Functions inherited from ReadinessSource | |
| void | notifyReadiness (ReadyMask mask) |
| void | closeReadiness (ReadyMask mask=ReadyInvalid|ReadyHangup) |
| Protected Member Functions inherited from FileEventSource | |
| bool | hasFileEventObservers (FileEventMask mask) const |
| void | notifyFileEvent (const FileEvent &event) |
| void | notifyFinalFileEvent (const FileEvent &event) |
| void | beginFinalFileEvent (const FileEvent &event) |
| void | drainFileEvents () |
| void | closeFileEvents () |
Private Attributes | |
| unsigned | m_Seals |
Additional Inherited Members | |
| Public Types inherited from File | |
| enum | AttributeMask : uint32_t { AccessTime = 1U << 0 , ModifyTime = 1U << 1 , ChangeTime = 1U << 2 , Owner = 1U << 3 , Group = 1U << 4 , Permissions = 1U << 5 } |
| Static Public Attributes inherited from File | |
| static constexpr size_t | MaxReadPages = 32 |
| Static Protected Member Functions inherited from File | |
| static bool | writeCallback (CacheConstants::CallbackCause cause, uintptr_t loc, uintptr_t page, void *meta) |
| static bool | fillCacheCallback (CacheConstants::CallbackCause cause, uintptr_t loc, uintptr_t page, void *meta) |
| Static Protected Member Functions inherited from FileEventSource | |
| static bool | anyFileEventObservers () |
| Protected Attributes inherited from File | |
| String | m_Name |
| Time::Timestamp | m_AccessedTime |
| Time::Timestamp | m_ModifiedTime |
| Time::Timestamp | m_CreationTime |
| uintptr_t | m_Inode |
| uintptr_t | m_FutexIdentity = 0 |
| class Filesystem * | m_pFilesystem |
| size_t | m_Size |
| File * | m_pParent |
| Mutex | m_MetadataLock |
| File * | m_pDetachedParent |
| bool | m_bDetachedParentHandled |
| size_t | m_nWriters |
| size_t | m_nReaders |
| size_t | m_Uid |
| size_t | m_Gid |
| uint32_t | m_Permissions |
| CacheState | m_CacheState |
| bool | m_bDirect |
| Mutex | m_WriteLock |
| Mutex | m_DataMutationLock |
| size_t | m_PhysicalPageLoans = 0 |
| Mutex | m_Lock |
| List< MonitorTarget * > | m_MonitorTargets |
Detailed Description
Definition at line 14 of file memfd-file.h.
Constructor & Destructor Documentation
◆ MemFdFile()
| MemFdFile::MemFdFile | ( | const String & | name, |
| bool | allowSealing, | ||
| size_t | uid, | ||
| size_t | gid | ||
| ) |
Definition at line 23 of file memfd-file.cc.
Member Function Documentation
◆ addSeals()
| int MemFdFile::addSeals | ( | unsigned | seals | ) |
Definition at line 51 of file memfd-file.cc.
◆ allowMapping()
|
overridevirtual |
Admit a new mapping and restrict its later write upgrades if needed.
Reimplemented from File.
Definition at line 83 of file memfd-file.cc.
◆ allowResize()
|
overrideprotectedvirtual |
Reimplemented from File.
Definition at line 110 of file memfd-file.cc.
◆ fromFile()
Definition at line 36 of file memfd-file.cc.
◆ getAttributes()
|
overridevirtual |
Reimplemented from RamFile.
Definition at line 40 of file memfd-file.cc.
◆ getSeals()
| int MemFdFile::getSeals | ( | ) |
Definition at line 46 of file memfd-file.cc.
◆ prepareWrite()
|
overrideprotectedvirtual |
Reimplemented from File.
Definition at line 95 of file memfd-file.cc.
Member Data Documentation
◆ m_Seals
|
private |
Definition at line 30 of file memfd-file.h.
The documentation for this class was generated from the following files:
