127 lines
5.2 KiB
Go
127 lines
5.2 KiB
Go
//go:build linux
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package fsutils
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// https://github.com/torvalds/linux/blob/master/include/uapi/linux/fs.h "Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)"
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const (
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SecureDelete fsAttr = 1 << iota // Secure deletion
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UnDelete // Undelete
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CompressFile // Compress file
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SyncUpdate // Synchronous updates
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Immutable // Immutable file
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AppendOnly // Writes to file may only append
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NoDumpFile // Do not dump file
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NoUpdateAtime // Do not update atime
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IsDirty // Nobody knows what this does, lol.
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CompressedClusters // One or more compressed clusters
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NoCompress // Don't compress
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EncFile // Encrypted file
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BtreeFmt // Btree format dir
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AfsDir // AFS directory
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ReservedExt3 // Reserved for ext3
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NoMergeTail // File tail should not be merged
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DirSync // dirsync behaviour (directories only)
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DirTop // Top of directory hierarchies
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ReservedExt4a // Reserved for ext4
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Extents // Extents
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VerityProtected // Verity-protected inode
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LargeEaInode // Inode used for large EA
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ReservedExt4b // Reserved for ext4
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NoCOWFile // Do not cow file
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_ // (Unused)
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DAX // Inode is DAX
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_ // (Unused)
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_ // (Unused)
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ReservedExt4c // Reserved for ext4
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UseParentProjId // Create with parents projid
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CaseInsensitive // Folder is case-insensitive
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ReservedExt2 // Reserved for ext2 lib
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)
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// These are the same value. For some reason.
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const (
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HashIdxDir fsAttr = BtreeFmt // Hash-indexed directory
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)
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var (
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// AttrNameValueMap contains a mapping of attribute names (as designated by this package) to their flag values.
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AttrNameValueMap map[string]fsAttr = map[string]fsAttr{
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"SecureDelete": SecureDelete,
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"UnDelete": UnDelete,
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"CompressFile": CompressFile,
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"SyncUpdate": SyncUpdate,
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"Immutable": Immutable,
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"AppendOnly": AppendOnly,
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"NoDumpFile": NoDumpFile,
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"NoUpdateAtime": NoUpdateAtime,
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"IsDirty": IsDirty,
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"CompressedClusters": CompressedClusters,
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"NoCompress": NoCompress,
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"EncFile": EncFile,
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"BtreeFmt": BtreeFmt,
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"HashIdxDir": HashIdxDir,
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"AfsDir": AfsDir,
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"ReservedExt3": ReservedExt3,
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"NoMergeTail": NoMergeTail,
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"DirSync": DirSync,
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"DirTop": DirTop,
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"ReservedExt4a": ReservedExt4a,
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"Extents": Extents,
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"VerityProtected": VerityProtected,
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"LargeEaInode": LargeEaInode,
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"ReservedExt4b": ReservedExt4b,
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"NoCOWFile": NoCOWFile,
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"DAX": DAX,
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"ReservedExt4c": ReservedExt4c,
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"UseParentProjId": UseParentProjId,
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"CaseInsensitive": CaseInsensitive,
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"ReservedExt2": ReservedExt2,
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}
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/*
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AttrValueNameMap contains a mapping of attribute flags to their names (as designated by this package).
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Note the oddball here, BtreeFmt and HashIdxDir are actually the same value, so their string value is unpredictable.
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*/
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AttrValueNameMap map[fsAttr]string = invertMap(AttrNameValueMap)
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// KernelNameValueMap allows lookups using the symbol name as used in the Linux kernel source.
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KernelNameValueMap map[string]fsAttr = map[string]fsAttr{
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"FS_SECRM_FL": SecureDelete,
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"FS_UNRM_FL": UnDelete,
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"FS_COMPR_FL": CompressFile,
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"FS_SYNC_FL": SyncUpdate,
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"FS_IMMUTABLE_FL": Immutable,
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"FS_APPEND_FL": AppendOnly,
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"FS_NODUMP_FL": NoDumpFile,
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"FS_NOATIME_FL": NoUpdateAtime,
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"FS_DIRTY_FL": IsDirty,
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"FS_COMPRBLK_FL": CompressedClusters,
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"FS_NOCOMP_FL": NoCompress,
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"FS_ENCRYPT_FL": EncFile,
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"FS_BTREE_FL": BtreeFmt,
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"FS_INDEX_FL": HashIdxDir,
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"FS_IMAGIC_FL": AfsDir,
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"FS_JOURNAL_DATA_FL": ReservedExt3,
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"FS_NOTAIL_FL": NoMergeTail,
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"FS_DIRSYNC_FL": DirSync,
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"FS_TOPDIR_FL": DirTop,
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"FS_HUGE_FILE_FL": ReservedExt4a,
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"FS_EXTENT_FL": Extents,
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"FS_VERITY_FL": VerityProtected,
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"FS_EA_INODE_FL": LargeEaInode,
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"FS_EOFBLOCKS_FL": ReservedExt4b,
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"FS_NOCOW_FL": NoCOWFile,
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"FS_DAX_FL": DAX,
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"FS_INLINE_DATA_FL": ReservedExt4c,
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"FS_PROJINHERIT_FL": UseParentProjId,
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"FS_CASEFOLD_FL": CaseInsensitive,
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"FS_RESERVED_FL": ReservedExt2,
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}
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/*
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KernelValueNameMap contains a mapping of attribute flags to their kernel source symbol name.
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Note the oddball here, BtreeFmt and HashIdxDir are actually the same value, so their string value is unpredictable.
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*/
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KernelValueNameMap map[fsAttr]string = invertMap(KernelNameValueMap)
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)
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