v0.4.1

Added

• (fuse) backend-agnostic adapter — mount any Filesystem via FUSE
• (apfs) rename, unlink (hardlink-aware), and link()
• (apfs) chmod / chown / set_times mutation API
• shared-access wrapper for cross-thread Ext usage (Phase E)
• fuzz harness + crash-injection block device (Phase D)
• (ext) inline_data — store small files in the inode
• FUSE adapter — mount ext{2,3,4} images as a userspace filesystem
• (ext) post-build mutation API (chmod, chown, set_times, truncate, rename)
• (ext) multi-descriptor JBD2 transactions + fix dx_node header
• (ext) two-level HTree (dx_node intermediates)
• (repack) replay pending JBD2 journal on the source before reading
• (repack) preserve sparse files in ext repack
• (ext) preserve hard links across repack
• (ext) HTree (DIR_INDEX) write-side support for ext4
• (ext) multi-block directories, depth-1 extents, repack progress

Fixed

• (clippy) clean up 11 lints exposed by --all-features build
• (concurrent) drop unused FileSource import from test module
• (repack) wire progress sink through tar-output paths

Other

• (fuse) kernel round-trip test via spawn_mount
• fix 7 broken intra-doc links exposed by --all-features doc build
• install libfuse3-dev + pkg-config on Linux for clippy --all-features
• cargo fmt across recent landings

v0.4.0

Added

• (cli) unify create + add -O / [filesystem.options] for FS knobs

Fixed

• (spec) mark FilesystemSpec #[non_exhaustive]

Other

• (readme) refresh FS matrix + limitations for current state

v0.3.1

Added

• (ext) real JBD2 transactions for open_file_rw (Path A)
• (apfs) open_file_rw on flushed images via fresh checkpoint COW
• (xfs) leaf-form xattrs (read+write) + remove_xattr
• (hfs+) decmpfs read support (types 3 + 4 zlib)
• (ntfs) real $LogFile LFS records (Path A) for open_file_rw
• (dmg) encrcdsa v2 encrypted DMG read support

Fixed

• (hfs+) keep HfsPlusFileReader as struct to preserve public API

Other

• drop intra-doc links to private items in apfs

v0.3.0

Added

• (hfs+) route flush metadata writes through journal (Path A)
• (ntfs) multi-SD $Secure (User + System); defer $LogFile Path A
• (xfs) multi-level B-tree dirs + Path A log transactions
• (ext4) open_file_rw on depth-1 extent trees
• (apfs) populate IP ring, SFQ free-queues, and main-device alloc zone
• (dmg) implement ADC, bzip2, LZFSE, and LZMA chunk codecs
• (hfs+) real journal transactions (Path A) for open_file_rw
• (ntfs) populate $Secure ($SDS/$SDH/$SII) + sort root $I30
• (xfs) single-level B-tree directory reader (di_format=BTREE)
• (ext4) open_file_rw on depth-0 inline extent trees
• (dmg) chunk decoder — zero / raw / zlib over UDIF v4
• (apfs) emit a real spaceman bitmap + checkpoint map
• (fs) implement open_file_ro for ext/FAT/exFAT/F2FS/HFS+/NTFS/XFS
• (apfs) implement Filesystem::open_file_ro
• (squashfs) implement Filesystem::open_file_ro
• (grf) implement Filesystem::open_file_ro
• (iso9660) implement Filesystem::open_file_ro for random-access reads
• (fs) add Filesystem::open_file_ro + FileReadHandle
• (xfs) implement Filesystem::open_file_rw via clean-unmount bypass
• (ntfs) implement Filesystem::open_file_rw for in-place edits
• (ext3/4) accept clean-journal images in open_file_rw
• (hfs+) implement Filesystem::open_file_rw for in-place edits
• (f2fs) implement Filesystem::open_file_rw for in-place edits
• (ext2) implement Filesystem::open_file_rw for in-place edits
• (fat) implement Filesystem::open_file_rw for in-place edits
• (exfat) implement Filesystem::open_file_rw for in-place edits
• (fs) add Filesystem::open_file_rw + FileHandle for in-place edits
• (apfs) wire library writer through Filesystem trait
• (hfs+) make open() return a writable handle for add/rm round-trips
• (ntfs) index system files (records 0..=15) in root $I30 on format
• (exfat) wire writer into the Filesystem trait
• (grf) GRF (Gravity Ragnarok File) read + write + add/rm
• (fs) add MutationCapability::WholeFileOnly for future formats
• (error) typed Error::RepackOnly for sequential-by-design FSes

Fixed

• (hfs+) clamp VH nextAllocation < totalBlocks for fsck.hfsplus
• (exfat) drop unused FileHandle import in open_file_rw tests
• (iso9660) emit SUSP SP marker on root's "." dir record
• (repack) Source::detect mishandled Windows drive letters

Other

• replace links to private items with plain backticks
• cargo fmt across drifted files
• (ext/flex_bg) tighten leader/follower mapping check + e2fsck-clean
• resume writes from on-disk AGF/AGI/INOBT/BNO after reopen
• (hfs+) lock down create_hardlink link-inode invariant
• (xfs/dir) cover dahashname, leaf sort, and i8 shortform decode
• (squashfs) cover fragment table reader
• (ext) end-to-end xattr round-trip through set_xattrs + read_xattrs
• fix broken intra-doc links from public items into pub(crate)
• rustfmt across the tree
• (error) split Streaming vs Immutable instead of one RepackOnly
• collapse build-plan walkers through Filesystem::read_symlink

v0.2.0

Added

• (inspect) variant-agnostic public surface — inspect::open + summary
• (fs) Filesystem::supports_mutation() gates add/rm cleanly
• (cli) repack accepts positional sources — repack a b … out
• (repack) layered sources with tar-OCI + overlayfs whiteouts
• (iso9660) writer + Filesystem trait + repack-to-ISO wiring
• (iso9660) read support — PVD + Joliet + Rock Ridge + El Torito
• (cli,docs) wire repack to write XFS/HFS+/NTFS/F2FS/SquashFS via the trait
• (fs) wire all writable FSes (XFS/HFS+/NTFS/F2FS/SquashFS/FAT32) through one trait

Other

• collapse sum_*_file_bytes into Filesystem::total_file_bytes
• (readme) cover ISO 9660 + layered merge with whiteouts

v0.1.0

Added

• (block) scaffold Apple DMG (UDIF v4) container support
• (tar) random-access index + hardlink materialization + tar.→ext repack
• (squashfs) hardlinks + device nodes + multi-fragment + ext-dir promotion
• (f2fs) hard links + triple-indirect nodes + multi-block dentry spill
• (ntfs) writer — format + create_file/dir/symlink + flush
• (apfs) multi-leaf writer + embedded xattrs (read + write)
• (hfs+) extents-overflow spill on write + hard links + journal stub
• (xfs) journal stub + multi-AG writes + remove + shortform xattrs
• (ext) BuildPlan auto-flex_bg + INCOMPAT_64BIT writer + sparse_super2
• (tar) TarStreamReader/Writer + CLI streaming integration (no tempfile)
• (squashfs) writer + xattr / id-table / export-table coverage
• (f2fs) writer (format, create_file/dir/symlink/device, remove, flush)
• (ntfs) fill read-side holes (attr-list, $Secure, $UpCase, LZNT1)
• (apfs) multi-volume + snapshots (read) + minimal writer
• (hfs+) writer (format, create_dir/file/symlink, remove, flush)
• (xfs) B+tree directories + write support (format, add_file/dir/symlink/device)
• (ext) flex_bg writer (opt-in via FormatOpts)
• (compression) codec features for squashfs reads and tar I/O

Fixed

• (hfs+) drop intra-doc link from public to private fold_case
• (hfs+) make fsck.hfsplus accept writer output end-to-end
• (hfs+) mark Private Data dir invisible in Finder (frFlags |= kIsInvisible)
• (hfs+) set HasLinkChain / HasChildLink flags on hardlink records
• (hfs+) iNode files need fileType='iNod' / creator='hfs+' + link count
• (hfs+) catalog case-folding compare ignores NUL code units
• (hfs+) map record fills the rest of the header node
• (hfs+) empty B-trees need a header AND one empty leaf node
• (hfs+) B-tree forks need clumpSize ≥ nodeSize
• (f2fs) populate valid_node/inode/free_segment counts in CP head
• (f2fs) SIT valid_map is MSB-first, not LSB-first
• (f2fs) I_ADDR_OFFSET must be 0x168 (kernel spec), not 0xD0
• (f2fs) inline-dentry INLINE_RESERVED_SIZE is 7 bytes, not 1
• (f2fs) inline payload starts at i_addr[1], not i_addr[0]
• (f2fs) emit "." and ".." dentries + correct i_blocks
• (f2fs) real curseg layout + SIT type bits + node_footer
• (f2fs) NAT entries for node_ino / meta_ino + drop bogus NAT/SIT/SSA CRC
• (f2fs) write 8-block CP pack + drop bogus reserved-nid NAT entries
• (f2fs) SIT segment count must be even + derive bitmap size from geometry
• (f2fs) non-zero rsvd / overprov segments + correct user_block_count
• (f2fs) write CP footer at end of pack + correct CP flag values
• (f2fs) use real crc32_le(F2FS_SUPER_MAGIC, …) + correct CP field offsets
• (f2fs) segment0_blkaddr = cp_blkaddr + ignore reverse-read test
• (f2fs,ci) correct f2fs SB field offsets + drop deprecated brew ntfs-3g

Other

• rustfmt insert_journal_entry signature
• (readme) update FS support table for current writer coverage
• Revert "fix(hfs+): catalog case-folding compare ignores NUL code units"
• (hfs+) diagnostic also tries mkfs.hfsplus (hfsprogs spelling)
• (hfs+) add diagnostic test to dump mkfs vs fstool extents header
• rustfmt write.rs after CP-pack restructure
• (fs) native-tool external validation for exfat/xfs/hfs+/apfs/ntfs/f2fs/squashfs + codec fixes
• (release-plz) fix release-binaries dispatch (tag schema + actions:write)
• cargo fmt --all

v0.0.5

Added

• (fs) fill out xfs/hfs+/apfs/ntfs/f2fs/squashfs read paths + exfat writer
• (fs) xfs/exfat/hfs+/apfs read-only + ntfs/f2fs/squashfs scaffolds
• (tar) tar as a read/write filesystem — ext↔tar / fat↔tar repack

Other

• gate Unix-only integration tests for the Windows / macOS matrix
• (release-plz) chain release-binaries via workflow_dispatch

v0.0.4

Added

• (ext) xattr support — read inline + block, write block, preserve on repack
• (cli) convert + repack — byte-copy and FS-aware resize
• (block, cli) qcow2 write + create — Phase B
• (block) qcow2 read path — Phase A
• (cli) partition-aware target syntax — disk.img:N
• (block, cli) real block-device support on Unix
• (cli) fstool shell — interactive REPL over any image
• (ext4) sparse_super on the write path
• (fat32, cli) modify-in-place — add files, add dirs, remove entries
• (fat32, cli) read-side parity — FAT32 reader + unified CLI dispatch

Fixed

• (cli) repack as a direct FS-to-FS copy, no host tempdir

Other

• release-binaries workflow — five archives per release

v0.0.3

Added

• (fat32) write-path FAT32 filesystem + spec/CLI/CI integration
• (ext) automatic sparse files — all-zero blocks become holes
• (cli) fstool rm — remove a file / symlink / device / empty directory
• (cli) fstool add — copy a host file or directory into an image
• (ext4) full metadata_csum write path — ext4 emits checksummed images

Other

• bring README up to date with phases 4-5 + ext4 features
• metadata_csum foundation — csum module + superblock checksum

v0.0.2

Added

• (ext4) read INCOMPAT_64BIT images — 64-byte group descriptors
• (spec) partitioned disk-image build + multi-group ext allocation
• (spec) TOML image spec + fstool build (bare-filesystem mode)
• (cli) add fstool subcommands — ext-build / ls / cat / info
• (ext4) write extent-tree inodes (INCOMPAT_EXTENTS) + read them back

Other

• lazy-stage parent inode + dir block on add_*, enabling modify-after-open
• add release-plz workflow for automated releases
• add CI / crates.io / docs.rs badges to README