[GIT PULL] UBIFS updates for 4.20-rc1

[Richard Weinberger]

Linus,

The following changes since commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d:

  Linux 4.19 (2018-10-22 07:37:37 +0100)

are available in the Git repository at:

  git://git.infradead.org/linux-ubifs.git tags/tags/upstream-4.20-rc1

for you to fetch changes up to 84db119f5a83e1bf9cffbc6d9cf16487eda1c056:

  ubifs: Remove unneeded semicolon (2018-10-23 13:49:02 +0200)

----------------------------------------------------------------
This pull request contains updates for UBIFS:

- Full filesystem authentication feature,
  UBIFS is now able to have the whole filesystem structure
  authenticated plus user data encrypted and authenticated.
- Minor cleanups

----------------------------------------------------------------
Ding Xiang (1):
      ubifs: Remove unneeded semicolon

Gustavo A. R. Silva (1):
      ubi: Mark expected switch fall-throughs

Sascha Hauer (24):
      ubifs: Refactor create_default_filesystem()
      ubifs: Pass ubifs_zbranch to try_read_node()
      ubifs: Pass ubifs_zbranch to read_znode()
      ubifs: Export pnode_lookup as ubifs_pnode_lookup
      ubifs: Implement ubifs_lpt_lookup using ubifs_pnode_lookup
      ubifs: Drop write_node
      ubifs: Store read superblock node
      ubifs: Format changes for authentication support
      ubifs: Add separate functions to init/crc a node
      ubifs: Add helper functions for authentication support
      ubifs: Create functions to embed a HMAC in a node
      ubifs: Add hashes to the tree node cache
      ubifs: authentication: Add hashes to index nodes
      ubifs: Add authentication nodes to journal
      ubifs: Add auth nodes to garbage collector journal head
      ubifs: Authenticate replayed journal
      ubifs: authentication: Authenticate LPT
      ubfis: authentication: Authenticate master node
      ubifs: Create hash for default LPT
      ubifs: authentication: Authenticate super block node
      ubifs: Add hashes and HMACs to default filesystem
      ubifs: Do not update inode size in-place in authenticated mode
      ubifs: Enable authentication support
      Documentation: ubifs: Add authentication whitepaper

 Documentation/filesystems/ubifs-authentication.md | 426 ++++++++++++++++++
 Documentation/filesystems/ubifs.txt               |   7 +
 drivers/mtd/ubi/attach.c                          |   1 +
 drivers/mtd/ubi/build.c                           |   2 +
 fs/ubifs/Kconfig                                  |  11 +
 fs/ubifs/Makefile                                 |   1 +
 fs/ubifs/auth.c                                   | 502 ++++++++++++++++++++++
 fs/ubifs/debug.c                                  |   6 +
 fs/ubifs/gc.c                                     |  49 ++-
 fs/ubifs/io.c                                     | 110 ++++-
 fs/ubifs/journal.c                                | 289 ++++++++++---
 fs/ubifs/log.c                                    |  24 ++
 fs/ubifs/lpt.c                                    | 184 +++++++-
 fs/ubifs/lpt_commit.c                             |  44 +-
 fs/ubifs/master.c                                 |  64 ++-
 fs/ubifs/misc.h                                   |   5 +-
 fs/ubifs/recovery.c                               | 120 ++++--
 fs/ubifs/replay.c                                 | 177 +++++++-
 fs/ubifs/sb.c                                     | 209 ++++++---
 fs/ubifs/super.c                                  |  91 +++-
 fs/ubifs/tnc.c                                    |  36 +-
 fs/ubifs/tnc_commit.c                             |  27 ++
 fs/ubifs/tnc_misc.c                               |  26 +-
 fs/ubifs/ubifs-media.h                            |  46 +-
 fs/ubifs/ubifs.h                                  | 253 ++++++++++-
 25 files changed, 2418 insertions(+), 292 deletions(-)
 create mode 100644 Documentation/filesystems/ubifs-authentication.md
 create mode 100644 fs/ubifs/auth.c