1cpucontrol_selinux(8) SELinux Policy cpucontrol cpucontrol_selinux(8)
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6 cpucontrol_selinux - Security Enhanced Linux Policy for the cpucontrol
7 processes
8
10 Security-Enhanced Linux secures the cpucontrol processes via flexible
11 mandatory access control.
12 The cpucontrol processes execute with the cpucontrol_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16 For example:
18 ps -eZ | grep cpucontrol_t
20
24 The cpucontrol_t SELinux type can be entered via the cpucontrol_exec_t
25 file type.
26 The default entrypoint paths for the cpucontrol_t domain are the fol‐
28 lowing:
29 /sbin/microcode_ctl, /usr/sbin/microcode_ctl
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 Policy governs the access confined processes have to files. SELinux
39 cpucontrol policy is very flexible allowing users to setup their cpu‐
40 control processes in as secure a method as possible.
41 The following process types are defined for cpucontrol:
43 cpucontrol_t
45 Note: semanage permissive -a cpucontrol_t can be used to make the
47 process type cpucontrol_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
53 SELinux policy is customizable based on least access required. cpucon‐
54 trol policy is extremely flexible and has several booleans that allow
55 you to manipulate the policy and run cpucontrol with the tightest
56 access possible.
57 If you want to allow all daemons the ability to read/write terminals,
61 you must turn on the daemons_use_tty boolean. Disabled by default.
62 setsebool -P daemons_use_tty 1
64 If you want to deny any process from ptracing or debugging any other
68 processes, you must turn on the deny_ptrace boolean. Enabled by
69 default.
70 setsebool -P deny_ptrace 1
72 If you want to allow any process to mmap any file on system with
76 attribute file_type, you must turn on the domain_can_mmap_files bool‐
77 ean. Enabled by default.
78 setsebool -P domain_can_mmap_files 1
80 If you want to allow all domains write to kmsg_device, while kernel is
84 executed with systemd.log_target=kmsg parameter, you must turn on the
85 domain_can_write_kmsg boolean. Disabled by default.
86 setsebool -P domain_can_write_kmsg 1
88 If you want to allow all domains to use other domains file descriptors,
92 you must turn on the domain_fd_use boolean. Enabled by default.
93 setsebool -P domain_fd_use 1
95 If you want to allow all domains to have the kernel load modules, you
99 must turn on the domain_kernel_load_modules boolean. Disabled by
100 default.
101 setsebool -P domain_kernel_load_modules 1
103 If you want to allow all domains to execute in fips_mode, you must turn
107 on the fips_mode boolean. Enabled by default.
108 setsebool -P fips_mode 1
110 If you want to enable reading of urandom for all domains, you must turn
114 on the global_ssp boolean. Disabled by default.
115 setsebool -P global_ssp 1
117 If you want to allow confined applications to use nscd shared memory,
121 you must turn on the nscd_use_shm boolean. Disabled by default.
122 setsebool -P nscd_use_shm 1
124
128 SELinux requires files to have an extended attribute to define the file
129 type.
130 You can see the context of a file using the -Z option to ls
132 Policy governs the access confined processes have to these files.
134 SELinux cpucontrol policy is very flexible allowing users to setup
135 their cpucontrol processes in as secure a method as possible.
136 STANDARD FILE CONTEXT
138 SELinux defines the file context types for the cpucontrol, if you
140 wanted to store files with these types in a diffent paths, you need to
141 execute the semanage command to sepecify alternate labeling and then
142 use restorecon to put the labels on disk.
143 semanage fcontext -a -t cpucontrol_conf_t '/srv/mycpucontrol_con‐
145 tent(/.*)?'
146 restorecon -R -v /srv/mycpucontrol_content
147 Note: SELinux often uses regular expressions to specify labels that
149 match multiple files.
150 The following file types are defined for cpucontrol:
152 cpucontrol_conf_t
156 - Set files with the cpucontrol_conf_t type, if you want to treat the
158 files as cpucontrol configuration data, usually stored under the /etc
159 directory.
160 cpucontrol_exec_t
164 - Set files with the cpucontrol_exec_t type, if you want to transition
166 an executable to the cpucontrol_t domain.
167 Paths:
170 /sbin/microcode_ctl, /usr/sbin/microcode_ctl
171 Note: File context can be temporarily modified with the chcon command.
174 If you want to permanently change the file context you need to use the
175 semanage fcontext command. This will modify the SELinux labeling data‐
176 base. You will need to use restorecon to apply the labels.
177
180 semanage fcontext can also be used to manipulate default file context
181 mappings.
182 semanage permissive can also be used to manipulate whether or not a
184 process type is permissive.
185 semanage module can also be used to enable/disable/install/remove pol‐
187 icy modules.
188 semanage boolean can also be used to manipulate the booleans
190 system-config-selinux is a GUI tool available to customize SELinux pol‐
193 icy settings.
194
197 This manual page was auto-generated using sepolicy manpage .
198
201 selinux(8), cpucontrol(8), semanage(8), restorecon(8), chcon(1), sepol‐
202 icy(8) , setsebool(8)
203cpucontrol 19-04-25 cpucontrol_selinux(8)