linux-kernel - [PATCH v3 13/14] ntfs: add Kconfig and Makefile

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Message-Id: <20251229105932.11360-14-linkinjeon@kernel.org>
Date: Mon, 29 Dec 2025 19:59:31 +0900
From: Namjae Jeon <linkinjeon@...nel.org>
To: viro@...iv.linux.org.uk,
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Cc: linux-fsdevel@...r.kernel.org,
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	Namjae Jeon <linkinjeon@...nel.org>
Subject: [PATCH v3 13/14] ntfs: add Kconfig and Makefile

This adds the Kconfig and Makefile

Signed-off-by: Namjae Jeon <linkinjeon@...nel.org>
---
 fs/Kconfig       | 18 ++++++++++++++++++
 fs/Makefile      |  1 +
 fs/ntfs/Kconfig  | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 fs/ntfs/Makefile | 18 ++++++++++++++++++
 4 files changed, 83 insertions(+)
 create mode 100644 fs/ntfs/Kconfig
 create mode 100644 fs/ntfs/Makefile

diff --git a/fs/Kconfig b/fs/Kconfig
index 0bfdaecaa877..c57cb6a53baf 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -152,8 +152,26 @@ menu "DOS/FAT/EXFAT/NT Filesystems"
 
 source "fs/fat/Kconfig"
 source "fs/exfat/Kconfig"
+source "fs/ntfs/Kconfig"
 source "fs/ntfs3/Kconfig"
 
+choice
+	prompt "Select built-in NTFS filesystem (only one can be built-in)"
+	default DEFAULT_NTFS
+	help
+	  Only one NTFS can be built into the kernel(y) when selecting a
+	  specific default. Both can still be built as modules(m).
+
+	config DEFAULT_NTFS_NONE
+		bool "No built-in restriction (allows both drivers as 'y')"
+
+	config DEFAULT_NTFS
+		bool "NTFS"
+
+	config DEFAULT_NTFS3
+		bool "NTFS3"
+endchoice
+
 endmenu
 endif # BLOCK
 
diff --git a/fs/Makefile b/fs/Makefile
index a04274a3c854..6893496697c4 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -90,6 +90,7 @@ obj-$(CONFIG_NLS)		+= nls/
 obj-y				+= unicode/
 obj-$(CONFIG_SMBFS)		+= smb/
 obj-$(CONFIG_HPFS_FS)		+= hpfs/
+obj-$(CONFIG_NTFS_FS)		+= ntfs/
 obj-$(CONFIG_NTFS3_FS)		+= ntfs3/
 obj-$(CONFIG_UFS_FS)		+= ufs/
 obj-$(CONFIG_EFS_FS)		+= efs/
diff --git a/fs/ntfs/Kconfig b/fs/ntfs/Kconfig
new file mode 100644
index 000000000000..ef14c68ed36c
--- /dev/null
+++ b/fs/ntfs/Kconfig
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config NTFS_FS
+	tristate "NTFS file system support"
+	depends on !DEFAULT_NTFS3 || m
+	select NLS
+	help
+	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
+	  This allows you to mount devices formatted with the ntfs file system.
+
+	  To compile this as a module, choose M here: the module will be called
+	  ntfs.
+
+config NTFS_DEBUG
+	bool "NTFS debugging support"
+	depends on NTFS_FS
+	help
+	  If you are experiencing any problems with the NTFS file system, say
+	  Y here.  This will result in additional consistency checks to be
+	  performed by the driver as well as additional debugging messages to
+	  be written to the system log.  Note that debugging messages are
+	  disabled by default.  To enable them, supply the option debug_msgs=1
+	  at the kernel command line when booting the kernel or as an option
+	  to insmod when loading the ntfs module.  Once the driver is active,
+	  you can enable debugging messages by doing (as root):
+	  echo 1 > /proc/sys/fs/ntfs-debug
+	  Replacing the "1" with "0" would disable debug messages.
+
+	  If you leave debugging messages disabled, this results in little
+	  overhead, but enabling debug messages results in very significant
+	  slowdown of the system.
+
+	  When reporting bugs, please try to have available a full dump of
+	  debugging messages while the misbehaviour was occurring.
+
+config NTFS_FS_POSIX_ACL
+	bool "NTFS POSIX Access Control Lists"
+	depends on NTFS_FS
+	select FS_POSIX_ACL
+	help
+	  POSIX Access Control Lists (ACLs) support additional access rights
+	  for users and groups beyond the standard owner/group/world scheme,
+	  and this option selects support for ACLs specifically for ntfs
+	  filesystems.
+	  NOTE: this is linux only feature. Windows will ignore these ACLs.
+
+	  If you don't know what Access Control Lists are, say N.
diff --git a/fs/ntfs/Makefile b/fs/ntfs/Makefile
new file mode 100644
index 000000000000..01faad8cbbc9
--- /dev/null
+++ b/fs/ntfs/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the ntfs filesystem support.
+#
+
+# to check robot warnings
+ccflags-y += -Wint-to-pointer-cast \
+        $(call cc-option,-Wunused-but-set-variable,-Wunused-const-variable) \
+        $(call cc-option,-Wold-style-declaration,-Wout-of-line-declaration)
+
+obj-$(CONFIG_NTFS_FS) += ntfs.o
+
+ntfs-y := aops.o attrib.o collate.o dir.o file.o index.o inode.o \
+	  mft.o mst.o namei.o runlist.o super.o unistr.o attrlist.o ea.o \
+	  upcase.o bitmap.o lcnalloc.o logfile.o reparse.o compress.o \
+	  iomap.o debug.o sysctl.o quota.o
+
+ccflags-$(CONFIG_NTFS_DEBUG) += -DDEBUG
-- 
2.25.1