• Jaegeuk Kim's avatar
    f2fs crypto: activate encryption support for fs APIs · fcc85a4d
    Jaegeuk Kim authored
    
    
    This patch activates the following APIs for encryption support.
    
    The rules quoted by ext4 are:
     - An unencrypted directory may contain encrypted or unencrypted files
       or directories.
     - All files or directories in a directory must be protected using the
       same key as their containing directory.
     - Encrypted inode for regular file should not have inline_data.
     - Encrypted symlink and directory may have inline_data and inline_dentry.
    
    This patch activates the following APIs.
    1. f2fs_link              : validate context
    2. f2fs_lookup            :      ''
    3. f2fs_rename            :      ''
    4. f2fs_create/f2fs_mkdir : inherit its dir's context
    5. f2fs_direct_IO         : do buffered io for regular files
    6. f2fs_open              : check encryption info
    7. f2fs_file_mmap         :      ''
    8. f2fs_setattr           :      ''
    9. f2fs_file_write_iter   :      ''           (Called by sys_io_submit)
    10. f2fs_fallocate        : do not support fcollapse
    11. f2fs_evict_inode      : free_encryption_info
    Signed-off-by: default avatarMichael Halcrow <mhalcrow@google.com>
    Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
    fcc85a4d
file.c 35.3 KB