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c8407f2e56
After some discussion, we decided that controlling transport layer
security policy should be separate from the setting for the user
authentication flavor. To accomplish this, add a new NFS mount
option to select a transport layer security policy for RPC
operations associated with the mount point.
xprtsec=none - Transport layer security is forced off.
xprtsec=tls - Establish an encryption-only TLS session. If
the initial handshake fails, the mount fails.
If TLS is not available on a reconnect, drop
the connection and try again.
xprtsec=mtls - Both sides authenticate and an encrypted
session is created. If the initial handshake
fails, the mount fails. If TLS is not available
on a reconnect, drop the connection and try
again.
To support client peer authentication (mtls), the handshake daemon
will have configurable default authentication material (certificate
or pre-shared key). In the future, mount options can be added that
can provide this material on a per-mount basis.
Updates to mount.nfs (to support xprtsec=auto) and nfs(5) will be
sent under separate cover.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
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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.