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09d85f8d89
The "fix_hmac" argument improves security of internal_hash and journal_mac: - the section number is mixed to the mac, so that an attacker can't copy sectors from one journal section to another journal section - the superblock is protected by journal_mac - a 16-byte salt stored in the superblock is mixed to the mac, so that the attacker can't detect that two disks have the same hmac key and also to disallow the attacker to move sectors from one disk to another Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reported-by: Daniel Glockner <dg@emlix.com> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> # ReST fix Tested-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.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.