1tuned_selinux(8) SELinux Policy tuned tuned_selinux(8)
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6 tuned_selinux - Security Enhanced Linux Policy for the tuned processes
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9 Security-Enhanced Linux secures the tuned processes via flexible manda‐
10 tory access control.
11 The tuned processes execute with the tuned_t SELinux type. You can
13 check if you have these processes running by executing the ps command
14 with the -Z qualifier.
15 For example:
17 ps -eZ | grep tuned_t
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23 The tuned_t SELinux type can be entered via the tuned_exec_t file type.
24 The default entrypoint paths for the tuned_t domain are the following:
26 /usr/sbin/tuned
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30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 tuned policy is very flexible allowing users to setup their tuned pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for tuned:
40 tuned_t
42 Note: semanage permissive -a tuned_t can be used to make the process
44 type tuned_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
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50 SELinux policy is customizable based on least access required. tuned
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run tuned with the tightest access possible.
53 If you want to allow users to resolve user passwd entries directly from
57 ldap rather then using a sssd server, you must turn on the authlo‐
58 gin_nsswitch_use_ldap boolean. Disabled by default.
59 setsebool -P authlogin_nsswitch_use_ldap 1
61 If you want to deny user domains applications to map a memory region as
65 both executable and writable, this is dangerous and the executable
66 should be reported in bugzilla, you must turn on the deny_execmem bool‐
67 ean. Enabled by default.
68 setsebool -P deny_execmem 1
70 If you want to allow all domains to execute in fips_mode, you must turn
74 on the fips_mode boolean. Enabled by default.
75 setsebool -P fips_mode 1
77 If you want to allow confined applications to run with kerberos, you
81 must turn on the kerberos_enabled boolean. Enabled by default.
82 setsebool -P kerberos_enabled 1
84 If you want to control the ability to mmap a low area of the address
88 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
89 the mmap_low_allowed boolean. Disabled by default.
90 setsebool -P mmap_low_allowed 1
92 If you want to allow system to run with NIS, you must turn on the
96 nis_enabled boolean. Disabled by default.
97 setsebool -P nis_enabled 1
99 If you want to allow confined applications to use nscd shared memory,
103 you must turn on the nscd_use_shm boolean. Disabled by default.
104 setsebool -P nscd_use_shm 1
106 If you want to disable kernel module loading, you must turn on the
110 secure_mode_insmod boolean. Enabled by default.
111 setsebool -P secure_mode_insmod 1
113 If you want to allow unconfined executables to make their heap memory
117 executable. Doing this is a really bad idea. Probably indicates a
118 badly coded executable, but could indicate an attack. This executable
119 should be reported in bugzilla, you must turn on the selin‐
120 uxuser_execheap boolean. Disabled by default.
121 setsebool -P selinuxuser_execheap 1
123 If you want to allow unconfined executables to make their stack exe‐
127 cutable. This should never, ever be necessary. Probably indicates a
128 badly coded executable, but could indicate an attack. This executable
129 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
130 stack boolean. Enabled by default.
131 setsebool -P selinuxuser_execstack 1
133
137 The SELinux process type tuned_t can manage files labeled with the fol‐
138 lowing file types. The paths listed are the default paths for these
139 file types. Note the processes UID still need to have DAC permissions.
140 file_type
142 all files on the system
144
147 SELinux requires files to have an extended attribute to define the file
148 type.
149 You can see the context of a file using the -Z option to ls
151 Policy governs the access confined processes have to these files.
153 SELinux tuned policy is very flexible allowing users to setup their
154 tuned processes in as secure a method as possible.
155 EQUIVALENCE DIRECTORIES
157 tuned policy stores data with multiple different file context types
160 under the /var/log/tuned directory. If you would like to store the
161 data in a different directory you can use the semanage command to cre‐
162 ate an equivalence mapping. If you wanted to store this data under the
163 /srv dirctory you would execute the following command:
164 semanage fcontext -a -e /var/log/tuned /srv/tuned
166 restorecon -R -v /srv/tuned
167 tuned policy stores data with multiple different file context types
169 under the /var/run/tuned directory. If you would like to store the
170 data in a different directory you can use the semanage command to cre‐
171 ate an equivalence mapping. If you wanted to store this data under the
172 /srv dirctory you would execute the following command:
173 semanage fcontext -a -e /var/run/tuned /srv/tuned
175 restorecon -R -v /srv/tuned
176 STANDARD FILE CONTEXT
178 SELinux defines the file context types for the tuned, if you wanted to
180 store files with these types in a diffent paths, you need to execute
181 the semanage command to sepecify alternate labeling and then use
182 restorecon to put the labels on disk.
183 semanage fcontext -a -t tuned_var_run_t '/srv/mytuned_content(/.*)?'
185 restorecon -R -v /srv/mytuned_content
186 Note: SELinux often uses regular expressions to specify labels that
188 match multiple files.
189 The following file types are defined for tuned:
191 tuned_etc_t
195 - Set files with the tuned_etc_t type, if you want to store tuned files
197 in the /etc directories.
198 tuned_exec_t
202 - Set files with the tuned_exec_t type, if you want to transition an
204 executable to the tuned_t domain.
205 tuned_initrc_exec_t
209 - Set files with the tuned_initrc_exec_t type, if you want to transi‐
211 tion an executable to the tuned_initrc_t domain.
212 tuned_log_t
216 - Set files with the tuned_log_t type, if you want to treat the data as
218 tuned log data, usually stored under the /var/log directory.
219 Paths:
222 /var/log/tuned(/.*)?, /var/log/tuned.log.*
223 tuned_rw_etc_t
226 - Set files with the tuned_rw_etc_t type, if you want to store tuned rw
228 files in the /etc directories.
229 tuned_tmp_t
233 - Set files with the tuned_tmp_t type, if you want to store tuned tem‐
235 porary files in the /tmp directories.
236 tuned_var_run_t
240 - Set files with the tuned_var_run_t type, if you want to store the
242 tuned files under the /run or /var/run directory.
243 Paths:
246 /var/run/tuned(/.*)?, /var/run/tuned.pid
247 Note: File context can be temporarily modified with the chcon command.
250 If you want to permanently change the file context you need to use the
251 semanage fcontext command. This will modify the SELinux labeling data‐
252 base. You will need to use restorecon to apply the labels.
253
256 semanage fcontext can also be used to manipulate default file context
257 mappings.
258 semanage permissive can also be used to manipulate whether or not a
260 process type is permissive.
261 semanage module can also be used to enable/disable/install/remove pol‐
263 icy modules.
264 semanage boolean can also be used to manipulate the booleans
266 system-config-selinux is a GUI tool available to customize SELinux pol‐
269 icy settings.
270
273 This manual page was auto-generated using sepolicy manpage .
274
277 selinux(8), tuned(8), semanage(8), restorecon(8), chcon(1), sepol‐
278 icy(8), setsebool(8)
279tuned 19-06-18 tuned_selinux(8)