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