[LSC] Add LOCAL_LICENSE_KINDS to external/exfatprogs am: 8a23710bb2 am: b0e8abf9de am: 950aa66e93 am: 62b1572c98

Original change: https://android-review.googlesource.com/c/platform/external/exfatprogs/+/1758538

Change-Id: I4cec3477b2c1a272f6b0488753a19aa1767fe2ed
tree: a57eded4f6992cfed8ea74fa22aec49e4e698686
  1. dump/
  2. fsck/
  3. include/
  4. label/
  5. lib/
  6. manpages/
  7. mkfs/
  8. tests/
  9. tune/
  10. .travis.yml
  11. .travis_get_mainline_kernel
  12. Android.bp
  13. autogen.sh
  14. configure.ac
  16. Makefile.am
  19. NEWS
  20. OWNERS
  21. README.md


As new exfat filesystem is merged into linux-5.7 kernel, exfatprogs is created as an official userspace utilities that contain all of the standard utilities for creating and fixing and debugging exfat filesystem in linux system. The goal of exfatprogs is to provide high performance and quality at the level of exfat utilities in windows. And this software is licensed under the GNU General Public License Version 2.

Building exfatprogs

Install prerequisite packages:

For Ubuntu:
    sudo apt-get install autoconf libtool pkg-config

For Fedora, RHEL:
    sudo yum install autoconf automake libtool

Build steps:

    cd into the exfatprogs directory:
    make install

Using exfatprogs

- mkfs.exfat:
    Build a exfat filesystem on a device or partition(e.g. /dev/hda1, dev/sda1).

Usage example:
    1. No option(default) : cluster size adjustment as per device size, quick format.
        mkfs.exfat /dev/sda1
    2. To change cluster size(KB or MB or Byte) user want
        mkfs.exfat -c 1048576 /dev/sda1
        mkfs.exfat -c 1024K /dev/sda1
        mkfs.exfat -c 1M /dev/sda1
    3. For full format(zero out)
        mkfs.exfat -f /dev/sda1
    4. For set volume label, use -l option with string user want.
        mkfs.exfat -L "my usb" /dev/sda1
    5. To change boundary alignment(KB or MB or Byte) user want
        mkfs.exfat -b 16777216 /dev/sda1
        mkfs.exfat -b 16384K /dev/sda1
        mkfs.exfat -b 16M /dev/sda1

- fsck.exfat:
    Check the consistency of your exfat filesystem and optionally repair a corrupted device formatted by exfat.

Usage example:
    1. check the consistency.
        fsck.exfat /dev/sda1
    2. repair and fix.(preparing)

- tune.exfat:
    Adjust tunable filesystem parameters on an exFAT filesystem

Usage example:
    1. print current volume label.
        tune.exfat -l /dev/sda1
    2. set new volume label.
        tune.exfat -L "new label" /dev/sda1
    3. print current volume serial.
        tune.exfat -i /dev/sda1
    4. set new volume serial.
        tune.exfat -I 0x12345678 /dev/sda1

- exfatlabel:
    Get or Set volume label or serial

Usage example:
    1. get current volume label.
        exfatlabel /dev/sda1
    2. set new volume label.
        exfatlabel /dev/sda1 "new label"
    3. get current volume serial.
        exfatlabel -i /dev/sda1
    4. set new volume serial.
        exfatlabel -i /dev/sda1 0x12345678

- dump.exfat:
    Show on-disk information

Usage example:
    dump.exfat /dev/sda1


Some fsck implementations were tested and compared for Samsung 64GB Pro microSDXC UHS-I Class 10 which was filled up to 35GB with 9948 directories and 16506 files by fsstress.

The difference in the execution time for each testing is very small.

Implementationversionexecution time (seconds)
exfatprogs fsck1.0.411.561
Windows fsckWindows 10 180911.449
exfat-fuse fsck1.3.068.977

Sending feedback

If you have any issues, please create issues or contact to Namjae Jeon and Hyunchul Lee. Contributions are also welcome.

Contributor information

  • Please base your pull requests on the exfat-next branch.
  • Make sure you add ‘Signed-Off’ information to your commits (e. g. git commit --signoff).