HelenOS sources

root/uspace/srv/fs/exfat/

[..]
doc/ exfat.c exfat.h exfat_bitmap.c exfat_bitmap.h
exfat_dentry.c exfat_dentry.h exfat_directory.c exfat_directory.h exfat_fat.c
exfat_fat.h exfat_idx.c exfat_ops.c
[..]
HelenOS homepage, sources at GitHub