[GIT PULL] SafeSetID changes for v5.10

[Micah Morton]

The following changes since commit bbf5c979011a099af5dc76498918ed7df445635b:

  Linux 5.9 (2020-10-11 14:15:50 -0700)

are available in the Git repository at:

  https://github.com/micah-morton/linux.git tags/safesetid-5.10

for you to fetch changes up to 03ca0ec138927b16fab0dad7b869f42eb2849c94:

  LSM: SafeSetID: Fix warnings reported by test bot (2020-10-13 09:17:36 -0700)

----------------------------------------------------------------
SafeSetID changes for v5.10

The changes in this pull request are mostly contained to within the
SafeSetID LSM, with the exception of a few 1-line changes to change
some ns_capable() calls to ns_capable_setid() -- causing a flag
(CAP_OPT_INSETID) to be set that is examined by SafeSetID code and
nothing else in the kernel. These changes have been baking in -next and
actually were in -next for the entire v5.9 merge window but I didn't
have a chance to send them.

The changes to SafeSetID internally allow for setting up GID transition
security policies, as already existed for UIDs.

NOTE: I'm re-using my safesetid-next branch here as the branch for
creating the pull request. I think that's fine, not sure if this is the
normal workflow or not. Also, I use 'git rebase vX.X' to put my commits
on top of the latest stable release. Again, I verified with gitk that I
don't have any weird history in my branch that will mess things up so
AFAICT that should be fine too.

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

Thomas Cedeno (3):
      LSM: Signal to SafeSetID when setting group IDs
      LSM: SafeSetID: Add GID security policy handling
      LSM: SafeSetID: Fix warnings reported by test bot

 Documentation/admin-guide/LSM/SafeSetID.rst |  29 +++--
 kernel/capability.c                         |   2 +-
 kernel/groups.c                             |   2 +-
 kernel/sys.c                                |  10 +-
 security/safesetid/lsm.c                    | 190 +++++++++++++++++++++-------
 security/safesetid/lsm.h                    |  38 ++++--
 security/safesetid/securityfs.c             | 190 ++++++++++++++++++++--------
 7 files changed, 336 insertions(+), 125 deletions(-)