xref: /openbmc/linux/security/tomoyo/Kconfig (revision 4f6cce39)
1config SECURITY_TOMOYO
2	bool "TOMOYO Linux Support"
3	depends on SECURITY
4	depends on NET
5	select SECURITYFS
6	select SECURITY_PATH
7	select SECURITY_NETWORK
8	select SRCU
9	select BUILD_BIN2C
10	default n
11	help
12	  This selects TOMOYO Linux, pathname-based access control.
13	  Required userspace tools and further information may be
14	  found at <http://tomoyo.sourceforge.jp/>.
15	  If you are unsure how to answer this question, answer N.
16
17config SECURITY_TOMOYO_MAX_ACCEPT_ENTRY
18	int "Default maximal count for learning mode"
19	default 2048
20	range 0 2147483647
21	depends on SECURITY_TOMOYO
22	help
23	  This is the default value for maximal ACL entries
24	  that are automatically appended into policy at "learning mode".
25	  Some programs access thousands of objects, so running
26	  such programs in "learning mode" dulls the system response
27	  and consumes much memory.
28	  This is the safeguard for such programs.
29
30config SECURITY_TOMOYO_MAX_AUDIT_LOG
31	int "Default maximal count for audit log"
32	default 1024
33	range 0 2147483647
34	depends on SECURITY_TOMOYO
35	help
36	  This is the default value for maximal entries for
37	  audit logs that the kernel can hold on memory.
38	  You can read the log via /sys/kernel/security/tomoyo/audit.
39	  If you don't need audit logs, you may set this value to 0.
40
41config SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
42	bool "Activate without calling userspace policy loader."
43	default n
44	depends on SECURITY_TOMOYO
45	---help---
46	  Say Y here if you want to activate access control as soon as built-in
47	  policy was loaded. This option will be useful for systems where
48	  operations which can lead to the hijacking of the boot sequence are
49	  needed before loading the policy. For example, you can activate
50	  immediately after loading the fixed part of policy which will allow
51	  only operations needed for mounting a partition which contains the
52	  variant part of policy and verifying (e.g. running GPG check) and
53	  loading the variant part of policy. Since you can start using
54	  enforcing mode from the beginning, you can reduce the possibility of
55	  hijacking the boot sequence.
56
57config SECURITY_TOMOYO_POLICY_LOADER
58	string "Location of userspace policy loader"
59	default "/sbin/tomoyo-init"
60	depends on SECURITY_TOMOYO
61	depends on !SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
62	---help---
63	  This is the default pathname of policy loader which is called before
64	  activation. You can override this setting via TOMOYO_loader= kernel
65	  command line option.
66
67config SECURITY_TOMOYO_ACTIVATION_TRIGGER
68	string "Trigger for calling userspace policy loader"
69	default "/sbin/init"
70	depends on SECURITY_TOMOYO
71	depends on !SECURITY_TOMOYO_OMIT_USERSPACE_LOADER
72	---help---
73	  This is the default pathname of activation trigger.
74	  You can override this setting via TOMOYO_trigger= kernel command line
75	  option. For example, if you pass init=/bin/systemd option, you may
76	  want to also pass TOMOYO_trigger=/bin/systemd option.
77