In order to have a common code base for fscrypt & fsverity "post read" processing across filesystems which implement fscrypt/fsverity, this commit removes filesystem specific build config option (CONFIG_EXT4_FS_ENCRYPTION, CONFIG_EXT4_FS_VERITY, CONFIG_F2FS_FS_ENCRYPTION, CONFIG_F2FS_FS_VERITY and CONFIG_UBIFS_FS_ENCRYPTION) and replaces it with build options (CONFIG_FS_ENCRYPTION and CONFIG_FS_VERITY) whose values affect all the filesystems making use of fscrypt and fsverity.
PS: Since I have access to only to x86 and ppc64le machines, I haven't tested the defconfig files for other architectures. Changelog: V2 -> V3: 1. Remove unnecessary line breaks. 2. Remove the definition of f2fs_encrypted_inode(). 3. Fix Kconfig dependencies for fscrypt w.r.t F2FS and UBIFS. If F2FS is enabled in the kernel build configuration, F2FS_FS_XATTR is selected if FS_ENCRYPTION is enabled. Similarly, if UBIFS is enabled in the kernel build configuration, UBIFS_FS_XATTR and BLOCK is selected if FS_ENCRYPTION is enabled. 4. Two new patches have been added to move verity status check to fsverity_file_open() and fsverity_prepare_setattr(). 5. For patch "f2fs: use IS_VERITY() to check inode's fsverity status", the acked-by tag given by Chao Yu has been removed since I added an invocation to f2fs_set_inode_flags() inside f2fs_set_verity(). This is needed to have S_VERITY flag set on the corresponding VFS inode. V1 -> V2: 1. Address the following review comments provided by Eric Biggers, - In ext4_should_use_dax(), Use ext4_test_inode_flag() to check for fscrypt/fsverity status of an inode. - Update documentation associated with fscrypt & fsverity to refer to CONFIG_FS_ENCRYPTION and CONFIG_FS_VERITY build flags. - Remove filesystem specific fscrypt build configuration from defconfig files. - Provide a list of supported filesystems for CONFIG_FS_ENCRYPTION and CONFIG_FS_VERITY build flags. - Update comment describing S_VERITY flag. 2. Remove UBIFS specific encryption build option and make use of the generic CONFIG_FS_ENCRYPTION flag. RFC -> V1: 1. Add a new patch to implement S_VERITY/IS_VERITY(). 2. Split code that replaces filesystem specific routines with generic IS_ENCRYPTED() and IS_VERITY() calls into separate patches. Chandan Rajendra (9): ext4: use IS_ENCRYPTED() to check encryption status f2fs: use IS_ENCRYPTED() to check encryption status fscrypt: remove filesystem specific build config option Add S_VERITY and IS_VERITY() ext4: use IS_VERITY() to check inode's fsverity status f2fs: use IS_VERITY() to check inode's fsverity status fsverity: Remove filesystem specific build config option fsverity: Move verity status check to fsverity_file_open fsverity: Move verity status check to fsverity_prepare_setattr Documentation/filesystems/fscrypt.rst | 4 +- Documentation/filesystems/fsverity.rst | 4 +- arch/mips/configs/generic_defconfig | 2 +- arch/nds32/configs/defconfig | 2 +- arch/s390/configs/debug_defconfig | 2 +- arch/s390/configs/performance_defconfig | 2 +- fs/crypto/Kconfig | 5 +- fs/crypto/fscrypt_private.h | 1 - fs/ext4/Kconfig | 35 -- fs/ext4/dir.c | 10 +- fs/ext4/ext4.h | 23 +- fs/ext4/ext4_jbd2.h | 2 +- fs/ext4/extents.c | 4 +- fs/ext4/file.c | 8 +- fs/ext4/ialloc.c | 2 +- fs/ext4/inode.c | 40 ++- fs/ext4/ioctl.c | 4 +- fs/ext4/move_extent.c | 3 +- fs/ext4/namei.c | 18 +- fs/ext4/page-io.c | 9 +- fs/ext4/readpage.c | 10 +- fs/ext4/super.c | 13 +- fs/ext4/sysfs.c | 8 +- fs/f2fs/Kconfig | 32 +- fs/f2fs/data.c | 6 +- fs/f2fs/dir.c | 10 +- fs/f2fs/f2fs.h | 23 +- fs/f2fs/file.c | 28 +- fs/f2fs/inode.c | 8 +- fs/f2fs/namei.c | 6 +- fs/f2fs/super.c | 15 +- fs/f2fs/sysfs.c | 8 +- fs/ubifs/Kconfig | 13 +- fs/ubifs/Makefile | 2 +- fs/ubifs/ioctl.c | 4 +- fs/ubifs/sb.c | 2 +- fs/ubifs/super.c | 2 +- fs/ubifs/ubifs.h | 5 +- fs/verity/Kconfig | 3 +- fs/verity/fsverity_private.h | 1 - fs/verity/setup.c | 5 +- include/linux/fs.h | 10 +- include/linux/fscrypt.h | 416 +++++++++++++++++++++++- include/linux/fscrypt_notsupp.h | 231 ------------- include/linux/fscrypt_supp.h | 204 ------------ include/linux/fsverity.h | 7 +- 46 files changed, 554 insertions(+), 698 deletions(-) delete mode 100644 include/linux/fscrypt_notsupp.h delete mode 100644 include/linux/fscrypt_supp.h -- 2.19.1