1cpuspeed_selinux(8) SELinux Policy cpuspeed cpuspeed_selinux(8)
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6 cpuspeed_selinux - Security Enhanced Linux Policy for the cpuspeed pro‐
7 cesses
8
10 Security-Enhanced Linux secures the cpuspeed processes via flexible
11 mandatory access control.
12 The cpuspeed processes execute with the cpuspeed_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
16 For example:
18 ps -eZ | grep cpuspeed_t
20
24 The cpuspeed_t SELinux type can be entered via the cpuspeed_exec_t file
25 type.
26 The default entrypoint paths for the cpuspeed_t domain are the follow‐
28 ing:
29 /usr/sbin/cpufreqd, /usr/sbin/cpuspeed, /usr/sbin/powernowd
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 cpuspeed policy is very flexible allowing users to setup their cpuspeed
40 processes in as secure a method as possible.
41 The following process types are defined for cpuspeed:
43 cpuspeed_t
45 Note: semanage permissive -a cpuspeed_t can be used to make the process
47 type cpuspeed_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
50
53 SELinux policy is customizable based on least access required. cpus‐
54 peed policy is extremely flexible and has several booleans that allow
55 you to manipulate the policy and run cpuspeed with the tightest access
56 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 The SELinux process type cpuspeed_t can manage files labeled with the
129 following file types. The paths listed are the default paths for these
130 file types. Note the processes UID still need to have DAC permissions.
131 cpuspeed_var_run_t
133 /var/run/cpufreqd.pid
135 sysfs_t
137 /sys(/.*)?
139
142 SELinux requires files to have an extended attribute to define the file
143 type.
144 You can see the context of a file using the -Z option to ls
146 Policy governs the access confined processes have to these files.
148 SELinux cpuspeed policy is very flexible allowing users to setup their
149 cpuspeed processes in as secure a method as possible.
150 STANDARD FILE CONTEXT
152 SELinux defines the file context types for the cpuspeed, if you wanted
154 to store files with these types in a diffent paths, you need to execute
155 the semanage command to sepecify alternate labeling and then use
156 restorecon to put the labels on disk.
157 semanage fcontext -a -t cpuspeed_var_run_t '/srv/mycpuspeed_con‐
159 tent(/.*)?'
160 restorecon -R -v /srv/mycpuspeed_content
161 Note: SELinux often uses regular expressions to specify labels that
163 match multiple files.
164 The following file types are defined for cpuspeed:
166 cpuspeed_exec_t
170 - Set files with the cpuspeed_exec_t type, if you want to transition an
172 executable to the cpuspeed_t domain.
173 Paths:
176 /usr/sbin/cpufreqd, /usr/sbin/cpuspeed, /usr/sbin/powernowd
177 cpuspeed_var_run_t
180 - Set files with the cpuspeed_var_run_t type, if you want to store the
182 cpuspeed files under the /run or /var/run directory.
183 Note: File context can be temporarily modified with the chcon command.
187 If you want to permanently change the file context you need to use the
188 semanage fcontext command. This will modify the SELinux labeling data‐
189 base. You will need to use restorecon to apply the labels.
190
193 semanage fcontext can also be used to manipulate default file context
194 mappings.
195 semanage permissive can also be used to manipulate whether or not a
197 process type is permissive.
198 semanage module can also be used to enable/disable/install/remove pol‐
200 icy modules.
201 semanage boolean can also be used to manipulate the booleans
203 system-config-selinux is a GUI tool available to customize SELinux pol‐
206 icy settings.
207
210 This manual page was auto-generated using sepolicy manpage .
211
214 selinux(8), cpuspeed(8), semanage(8), restorecon(8), chcon(1), sepol‐
215 icy(8) , setsebool(8)
216cpuspeed 19-04-25 cpuspeed_selinux(8)