LXR linux/security/tomoyo/Kconfig

   1# SPDX-License-Identifier: GPL-2.0-only
   2config SECURITY_TOMOYO
   3        bool "TOMOYO Linux Support"
   4        depends on SECURITY
   5        depends on NET
   6        select SECURITYFS
   7        select SECURITY_PATH
   8        select SECURITY_NETWORK
   9        select SRCU
  10        select BUILD_BIN2C
  11        default n
  12        help
  13          This selects TOMOYO Linux, pathname-based access control.
  14          Required userspace tools and further information may be
  15          found at <http://tomoyo.sourceforge.jp/>.
  16          If you are unsure how to answer this question, answer N.
  17
  18config SECURITY_TOMOYO_MAX_ACCEPT_ENTRY
  19        int "Default maximal count for learning mode"
  20        default 2048
  21        range 0 2147483647
  22        depends on SECURITY_TOMOYO
  23        help
  24          This is the default value for maximal ACL entries
  25          that are automatically appended into policy at "learning mode".
  26          Some programs access thousands of objects, so running
  27          such programs in "learning mode" dulls the system response
  28          and consumes much memory.
  29          This is the safeguard for such programs.
  30
  31config SECURITY_TOMOYO_MAX_AUDIT_LOG
  32        int "Default maximal count for audit log"
  33        default 1024
  34        range 0 2147483647
  35        depends on SECURITY_TOMOYO
  36        help
  37          This is the default value for maximal entries for
  38          audit logs that the kernel can hold on memory.
  39          You can read the log via /sys/kernel/security/tomoyo/audit.
  40          If you don't need audit logs, you may set this value to 0.
  41
  42config SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
  43        bool "Activate without calling userspace policy loader."
  44        default n
  45        depends on SECURITY_TOMOYO
  46        ---help---
  47          Say Y here if you want to activate access control as soon as built-in
  48          policy was loaded. This option will be useful for systems where
  49          operations which can lead to the hijacking of the boot sequence are
  50          needed before loading the policy. For example, you can activate
  51          immediately after loading the fixed part of policy which will allow
  52          only operations needed for mounting a partition which contains the
  53          variant part of policy and verifying (e.g. running GPG check) and
  54          loading the variant part of policy. Since you can start using
  55          enforcing mode from the beginning, you can reduce the possibility of
  56          hijacking the boot sequence.
  57
  58config SECURITY_TOMOYO_POLICY_LOADER
  59        string "Location of userspace policy loader"
  60        default "/sbin/tomoyo-init"
  61        depends on SECURITY_TOMOYO
  62        depends on !SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
  63        ---help---
  64          This is the default pathname of policy loader which is called before
  65          activation. You can override this setting via TOMOYO_loader= kernel
  66          command line option.
  67
  68config SECURITY_TOMOYO_ACTIVATION_TRIGGER
  69        string "Trigger for calling userspace policy loader"
  70        default "/sbin/init"
  71        depends on SECURITY_TOMOYO
  72        depends on !SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
  73        ---help---
  74          This is the default pathname of activation trigger.
  75          You can override this setting via TOMOYO_trigger= kernel command line
  76          option. For example, if you pass init=/bin/systemd option, you may
  77          want to also pass TOMOYO_trigger=/bin/systemd option.
  78
  79config SECURITY_TOMOYO_INSECURE_BUILTIN_SETTING
  80        bool "Use insecure built-in settings for fuzzing tests."
  81        default n
  82        depends on SECURITY_TOMOYO
  83        select SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
  84        help
  85          Enabling this option forces minimal built-in policy and disables
  86          domain/program checks for run-time policy modifications. Please enable
  87          this option only if this kernel is built for doing fuzzing tests.
  88