linux-kernel - [PATCH RFC 6/8] staging: apfs: init build support for APFS

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Message-Id: <20250314-apfs-v1-6-ddfaa6836b5c@ethancedwards.com>
Date: Fri, 14 Mar 2025 17:57:52 -0400
From: Ethan Carter Edwards <ethan@...ancedwards.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, tytso@....edu
Cc: ernesto.mnd.fernandez@...il.com, dan.carpenter@...aro.org, 
 sven@...npeter.dev, ernesto@...ellium.com, gargaditya08@...e.com, 
 willy@...radead.org, asahi@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 linux-fsdevel@...r.kernel.org, linux-staging@...ts.linux.dev, 
 Ethan Carter Edwards <ethan@...ancedwards.com>
Subject: [PATCH RFC 6/8] staging: apfs: init build support for APFS

APFS read support is stable and functional for unencrypted, non-fusion
drives. Write support for unencrypted drives is somewhat stable and
supported. This commit adds the relevant Kconfig and Makefile options
to build this APFS driver as a module or kernel builtin.

Signed-off-by: Ethan Carter Edwards <ethan@...ancedwards.com>
---
 drivers/staging/Kconfig       |  2 ++
 drivers/staging/apfs/Kconfig  | 13 +++++++++++++
 drivers/staging/apfs/Makefile | 10 ++++++++++
 3 files changed, 25 insertions(+)

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 075e775d3868b3449922a25df1f79dec5a83a42d..2a063a9b759091eba8b0d5486976552d3a5df0a0 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -50,4 +50,6 @@ source "drivers/staging/vme_user/Kconfig"
 
 source "drivers/staging/gpib/Kconfig"
 
+source "drivers/staging/apfs/Kconfig"
+
 endif # STAGING
diff --git a/drivers/staging/apfs/Kconfig b/drivers/staging/apfs/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..55de44bba9ef29c79a1647d722caa57ba813d189
--- /dev/null
+++ b/drivers/staging/apfs/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config APFS_FS
+	tristate "Apple File System support"
+	select LIBCRC32C
+	select ZLIB_INFLATE
+	select NLS
+	select BUFFER_HEAD
+	select FS_IOMAP
+	select LEGACY_DIRECT_IO
+	help
+	  If you say Y here, you will be able to mount APFS partitions
+	  with read-only access. Write access is experimental and may
+	  corrupt your container.
diff --git a/drivers/staging/apfs/Makefile b/drivers/staging/apfs/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..2fa127dd126716f0159baa514ba3194688ec1c0f
--- /dev/null
+++ b/drivers/staging/apfs/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for the Linux APFS module.
+#
+
+obj-$(CONFIG_APFS_FS) += apfs.o
+apfs-y := btree.o compress.o dir.o extents.o file.o inode.o key.o libzbitmap.o \
+	  lzfse/lzfse_decode.o lzfse/lzfse_decode_base.o lzfse/lzfse_fse.o \
+	  lzfse/lzvn_decode_base.o message.o namei.o node.o object.o snapshot.o \
+	  spaceman.o super.o symlink.o transaction.o unicode.o xattr.o xfield.o

-- 
2.48.1