Thread (82 messages) 82 messages, 7 authors, 2018-10-01

[PATCH security-next v3 00/29] LSM: Explict LSM ordering

From: casey@schaufler-ca.com (Casey Schaufler)
Date: 2018-09-28 15:55:18
Also in: linux-arch, linux-doc, lkml

On 9/24/2018 5:18 PM, Kees Cook wrote:
v3:
- add CONFIG_LSM_ENABLE and refactor resulting logic
Kees, you can add my

	Reviewed-by:Casey Schaufler [off-list ref]

for this entire patch set. Thank you for taking this on, it's
a significant and important chunk of the LSM infrastructure
update.

...
Breakdown of patches:

Infrastructure improvements (no logical changes):
  LSM: Correctly announce start of LSM initialization
  vmlinux.lds.h: Avoid copy/paste of security_init section
  LSM: Rename .security_initcall section to .lsm_info
  LSM: Remove initcall tracing
  LSM: Convert from initcall to struct lsm_info
  vmlinux.lds.h: Move LSM_TABLE into INIT_DATA
  LSM: Convert security_initcall() into DEFINE_LSM()
  LSM: Record LSM name in struct lsm_info
  LSM: Provide init debugging infrastructure
  LSM: Don't ignore initialization failures

Split "integrity" out into "ordered initialization" (no logical changes):
  LSM: Introduce LSM_FLAG_LEGACY_MAJOR
  LSM: Provide separate ordered initialization

Provide centralized LSM enable/disable infrastructure:
  LoadPin: Rename "enable" to "enforce"
  LSM: Plumb visibility into optional "enabled" state
  LSM: Lift LSM selection out of individual LSMs
  LSM: Prepare for arbitrary LSM enabling
  LSM: Introduce CONFIG_LSM_ENABLE
  LSM: Introduce lsm.enable= and lsm.disable=
  LSM: Prepare for reorganizing "security=" logic
  LSM: Refactor "security=" in terms of enable/disable

Provide centralized LSM ordering infrastructure:
  LSM: Build ordered list of ordered LSMs for init
  LSM: Introduce CONFIG_LSM_ORDER
  LSM: Introduce "lsm.order=" for boottime ordering

Move minor LSMs into ordered LSM initialization:
  LoadPin: Initialize as ordered LSM
  Yama: Initialize as ordered LSM
  LSM: Introduce enum lsm_order
  capability: Initialize as LSM_ORDER_FIRST

Move major LSMs into ordered LSM initialization:
  LSM: Separate idea of "major" LSM from "exclusive" LSM
  LSM: Add all exclusive LSMs to ordered initialization

-Kees

 .../admin-guide/kernel-parameters.txt         |  20 +
 arch/arc/kernel/vmlinux.lds.S                 |   1 -
 arch/arm/kernel/vmlinux-xip.lds.S             |   1 -
 arch/arm64/kernel/vmlinux.lds.S               |   1 -
 arch/h8300/kernel/vmlinux.lds.S               |   1 -
 arch/microblaze/kernel/vmlinux.lds.S          |   2 -
 arch/powerpc/kernel/vmlinux.lds.S             |   2 -
 arch/um/include/asm/common.lds.S              |   2 -
 arch/xtensa/kernel/vmlinux.lds.S              |   1 -
 include/asm-generic/vmlinux.lds.h             |  25 +-
 include/linux/init.h                          |   2 -
 include/linux/lsm_hooks.h                     |  43 ++-
 include/linux/module.h                        |   1 -
 security/Kconfig                              |  61 ++-
 security/apparmor/lsm.c                       |  16 +-
 security/commoncap.c                          |   8 +-
 security/integrity/iint.c                     |   5 +-
 security/loadpin/Kconfig                      |   4 +-
 security/loadpin/loadpin.c                    |  28 +-
 security/security.c                           | 351 +++++++++++++++---
 security/selinux/hooks.c                      |  16 +-
 security/smack/smack_lsm.c                    |   8 +-
 security/tomoyo/tomoyo.c                      |   7 +-
 security/yama/yama_lsm.c                      |   7 +-
 24 files changed, 438 insertions(+), 175 deletions(-)
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