[GIT PULL] fscrypt updates for 5.11

[Eric Biggers <ebiggers@kernel.org>]

The following changes since commit 09162bc32c880a791c6c0668ce0745cf7958f576:

  Linux 5.10-rc4 (2020-11-15 16:44:31 -0800)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/fs/fscrypt/fscrypt.git tags/fscrypt-for-linus

for you to fetch changes up to a14d0b6764917b21ee6fdfd2a8a4c2920fbefcce:

  fscrypt: allow deleting files with unsupported encryption policy (2020-12-02 18:25:01 -0800)

----------------------------------------------------------------

This release there are some fixes for longstanding problems, as well as
some cleanups:

- Fix a race condition where a duplicate filename could be created in an
  encrypted directory if a syscall that creates a new filename raced
  with the directory's encryption key being added.

- Allow deleting files that use an unsupported encryption policy.

- Simplify the locking for 'struct fscrypt_master_key'.

- Remove kernel-internal constants from the UAPI header.

As usual, all these patches have been in linux-next with no reported
issues, and I've tested them with xfstests.

----------------------------------------------------------------
Eric Biggers (16):
      fscrypt: remove kernel-internal constants from UAPI header
      fscrypt: add fscrypt_is_nokey_name()
      ext4: prevent creating duplicate encrypted filenames
      f2fs: prevent creating duplicate encrypted filenames
      ubifs: prevent creating duplicate encrypted filenames
      fscrypt: remove unnecessary calls to fscrypt_require_key()
      fscrypt: simplify master key locking
      ext4: remove ext4_dir_open()
      f2fs: remove f2fs_dir_open()
      ubifs: remove ubifs_dir_open()
      ext4: don't call fscrypt_get_encryption_info() from dx_show_leaf()
      fscrypt: introduce fscrypt_prepare_readdir()
      fscrypt: move body of fscrypt_prepare_setattr() out-of-line
      fscrypt: move fscrypt_require_key() to fscrypt_private.h
      fscrypt: unexport fscrypt_get_encryption_info()
      fscrypt: allow deleting files with unsupported encryption policy

 fs/crypto/fname.c            |   8 +++-
 fs/crypto/fscrypt_private.h  |  56 +++++++++++++++-------
 fs/crypto/hooks.c            |  55 +++++++++++----------
 fs/crypto/keyring.c          |  10 +---
 fs/crypto/keysetup.c         |  44 +++++++++++------
 fs/crypto/policy.c           |  27 +++++++----
 fs/ext4/dir.c                |  16 ++-----
 fs/ext4/namei.c              |  13 ++---
 fs/f2fs/dir.c                |  10 +---
 fs/f2fs/f2fs.h               |   2 +
 fs/ubifs/dir.c               |  28 +++++------
 include/linux/fscrypt.h      | 112 ++++++++++++++++++++++++++++---------------
 include/uapi/linux/fscrypt.h |   5 +-
 13 files changed, 227 insertions(+), 159 deletions(-)