From e286695f1c85055b4f6ce2668524aca396449086 Mon Sep 17 00:00:00 2001
From: coolsnowwolf <coolsnowwolf@gmail.com>
Date: Sat, 1 Feb 2020 19:50:46 +0800
Subject: [PATCH] antfs: kernel mode driver based on NTFS-3G

---
 kernel/antfs/Makefile               | 43 ++++++++++++++++
 kernel/antfs/patches/001-4.18.patch | 76 +++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 kernel/antfs/Makefile
 create mode 100644 kernel/antfs/patches/001-4.18.patch

diff --git a/kernel/antfs/Makefile b/kernel/antfs/Makefile
new file mode 100644
index 000000000..8a636f1d7
--- /dev/null
+++ b/kernel/antfs/Makefile
@@ -0,0 +1,43 @@
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=antfs
+PKG_RELEASE:=1
+
+PKG_SOURCE_URL:=https://github.com/Sembedded/antfs.git
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_DATE:=2018-08-14
+PKG_SOURCE_VERSION:=002407a1b4f1bc9ec19fb07a4c01fc5348d216a6
+PKG_MIRROR_HASH:=d1c44b2be92531c2caa4fa00b620591f95104436920640e94861f8207d6e9082
+
+PKG_LICENSE:=GPL-2.0-only
+PKG_LICENSE_FILES:=LICENSE
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/fs-antfs
+	SUBMENU:=Filesystems
+	TITLE:=AVM NTFS Read/Write Driver
+	FILES:=$(PKG_BUILD_DIR)/antfs.ko
+	AUTOLOAD:=$(call AutoLoad,30,antfs,1)
+	DEPENDS:=+kmod-nls-base
+endef
+
+define KernelPackage/fs-antfs/description
+	Kernel module for NTFS Filesytem
+endef
+
+MAKE_OPTS:= \
+        ARCH="$(LINUX_KARCH)" \
+        CROSS_COMPILE="$(TARGET_CROSS)" \
+        M="$(PKG_BUILD_DIR)"
+
+define Build/Compile
+	$(MAKE) -C "$(LINUX_DIR)" \
+		$(MAKE_OPTS) \
+		CONFIG_ANTFS_FS=m \
+		CONFIG_ANTFS_SYMLINKS=y \
+		modules
+endef
+
+$(eval $(call KernelPackage,fs-antfs))
diff --git a/kernel/antfs/patches/001-4.18.patch b/kernel/antfs/patches/001-4.18.patch
new file mode 100644
index 000000000..20d3dc4de
--- /dev/null
+++ b/kernel/antfs/patches/001-4.18.patch
@@ -0,0 +1,76 @@
+--- a/dir.c
++++ b/dir.c
+@@ -1133,9 +1133,12 @@ static int antfs_setattr(struct dentry *
+ 		}
+ #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 8, 0)
+ 		inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+-#else
++#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
+ 		ktime_get_real_ts(&inode->i_mtime);
+ 		ktime_get_real_ts(&inode->i_ctime);
++#else
++		ktime_get_real_ts64(&inode->i_mtime);
++		ktime_get_real_ts64(&inode->i_ctime);
+ #endif
+ 		if (inode_needs_sync(inode)) {
+ 			sync_mapping_buffers(inode->i_mapping);
+--- a/include/ntfstime.h
++++ b/include/ntfstime.h
+@@ -47,9 +47,15 @@
+  *
+  * Return:  A Unix time (number of seconds since 1970, and nanoseconds)
+  */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
+ static inline struct timespec ntfs2timespec(sle64 ntfstime)
+ {
+ 	struct timespec spec;
++#else
++static inline struct timespec64 ntfs2timespec(sle64 ntfstime)
++{
++	struct timespec64 spec;
++#endif
+ 	uint64_t cputime;
+ 
+ 	cputime = sle64_to_cpu(ntfstime) - NTFS_TIME_OFFSET;
+@@ -79,7 +85,11 @@ static inline struct timespec ntfs2times
+  *
+  * Return:  An NTFS time (100ns units since Jan 1601)
+  */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
+ static inline sle64 timespec2ntfs(struct timespec spec)
++#else
++static inline sle64 timespec2ntfs(struct timespec64 spec)
++#endif
+ {
+ 	s64 units;
+ 
+@@ -94,10 +104,15 @@ static inline sle64 timespec2ntfs(struct
+ 
+ static inline sle64 ntfs_current_time(void)
+ {
++#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
+ 	struct timespec ts;
+ 
+ 	getnstimeofday(&ts);
++#else
++	struct timespec64 ts;
+ 
++	getnstimeofday64(&ts);
++#endif
+ 	return timespec2ntfs(ts);
+ }
+ 
+--- a/inode.c
++++ b/inode.c
+@@ -435,7 +435,11 @@ int antfs_inode_init(struct inode *inode
+ 					inode->i_ino ==
+ 					(unsigned long)FILE_ROOT))) {
+ 		struct antfs_sb_info *sbi = ANTFS_SB(inode->i_sb);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
+ 		struct timespec ts;
++#else
++		struct timespec64 ts;
++#endif
+ 
+ 		/* Init a base mft record ("regular" inode):
+ 		 * this has to be done in context of either: