Version 20200330

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.14.3)
+
+project(ntfs2btrfs VERSION 20200330)
+
+configure_file(src/config.h.in src/config.h)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+set(SRC_FILES src/ntfs2btrfs.cpp
+ src/ntfs.cpp
+ src/crc32c.c)
+
+if(MSVC)
+ enable_language(ASM_MASM)
+ set(SRC_FILES ${SRC_FILES} src/crc32c-masm.asm)
+else()
+ enable_language(ASM)
+ set(SRC_FILES ${SRC_FILES} src/crc32c-gas.S)
+endif()
+
+add_executable(ntfs2btrfs ${SRC_FILES})
+
+if(MSVC)
+ target_compile_options(ntfs2btrfs PRIVATE /W4)
+else()
+ target_compile_options(ntfs2btrfs PRIVATE -Wall -Wextra -Wno-address-of-packed-member)
+endif()
+
+install(TARGETS ntfs2btrfs DESTINATION bin)

README.md

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+Ntfs2btrfs
+==========
+
+Ntfs2btrfs is a tool which does in-place conversion of Microsoft's NTFS
+filesystem to the open-source filesystem Btrfs, much as `btrfs-convert`
+does for ext2. The original image is saved as a reflink copy at
+`image/ntfs.img`, and if you want to keep the conversion you can delete
+this to free up space.
+
+Although I believe this tool to be stable, please note that I take no
+responsibility if something goes awry!
+
+You're probably also interested in [WinBtrfs](https://github.com/maharmstone/btrfs),
+which is a Btrfs filesystem driver for Windows.
+
+Usage
+-----
+
+On Windows, from an Administrator command prompt:
+
+`ntfs2btrfs.exe D:\`
+
+Bear in mind that it won't work with your boot drive or a drive with a
+pagefile on it.
+
+On Linux, as root:
+
+`ntfs2btrfs.exe /dev/sda1`
+
+Compilation
+-----------
+
+On Windows, open the source directory in a recent version of MSVC, right-
+click on CMakeLists.txt, and click Compile.
+
+On Linux:
+
+ cmake .
+ make
+
+What works
+----------
+
+* Files
+* Directories
+* Symlinks
+* Other reparse points
+* Security descriptors
+* Alternate data streams
+* DOS attributes (hidden, system, etc.)
+
+What doesn't work
+-----------------
+
+* Rollback to original NTFS image
+* Windows' old extended attributes (you're not using these)
+* Large (i.e >16KB) ADSes (you're not using these either)
+* Preservation of LXSS metadata
+* Preservation of the case-sensitivity flag
+* Compressed files (skipped for now)
+* Encrypted files
+
+Can I boot Windows from Btrfs with this?
+----------------------------------------
+
+Yes, if the stars are right. See [Quibble](https://github.com/maharmstone/quibble).