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Do some more refactoring of the key setup code, in preparation for introducing a filesystem-level keyring and v2 encryption policies: - Now that ci_inode exists, don't pass around the inode unnecessarily. - Define a function setup_file_encryption_key() which handles the crypto key setup given an under-construction fscrypt_info. Don't pass the fscrypt_context, since everything is in the fscrypt_info. [This will be extended for v2 policies and the fs-level keyring.] - Define a function fscrypt_set_derived_key() which sets the per-file key, without depending on anything specific to v1 policies. [This will also be used for v2 policies.] - Define a function fscrypt_setup_v1_file_key() which takes the raw master key, thus separating finding the key from using it. [This will also be used if the key is found in the fs-level keyring.] Reviewed-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Eric Biggers <ebiggers@google.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.