1systemd_machined_selinux(S8E)Linux Policy systemd_machisnyesdtemd_machined_selinux(8)
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6 systemd_machined_selinux - Security Enhanced Linux Policy for the sys‐
7 temd_machined processes
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10 Security-Enhanced Linux secures the systemd_machined processes via
11 flexible mandatory access control.
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13 The systemd_machined processes execute with the systemd_machined_t
14 SELinux type. You can check if you have these processes running by exe‐
15 cuting the ps command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep systemd_machined_t
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24 The systemd_machined_t SELinux type can be entered via the sys‐
25 temd_machined_exec_t file type.
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27 The default entrypoint paths for the systemd_machined_t domain are the
28 following:
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30 /usr/lib/systemd/systemd-machined
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33 SELinux defines process types (domains) for each process running on the
34 system
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36 You can see the context of a process using the -Z option to ps
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38 Policy governs the access confined processes have to files. SELinux
39 systemd_machined policy is very flexible allowing users to setup their
40 systemd_machined processes in as secure a method as possible.
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42 The following process types are defined for systemd_machined:
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44 systemd_machined_t
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46 Note: semanage permissive -a systemd_machined_t can be used to make the
47 process type systemd_machined_t permissive. SELinux does not deny
48 access to permissive process types, but the AVC (SELinux denials) mes‐
49 sages are still generated.
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53 SELinux policy is customizable based on least access required. sys‐
54 temd_machined policy is extremely flexible and has several booleans
55 that allow you to manipulate the policy and run systemd_machined with
56 the tightest access possible.
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60 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
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64 setsebool -P authlogin_nsswitch_use_ldap 1
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68 If you want to allow all daemons to write corefiles to /, you must turn
69 on the daemons_dump_core boolean. Disabled by default.
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71 setsebool -P daemons_dump_core 1
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75 If you want to enable cluster mode for daemons, you must turn on the
76 daemons_enable_cluster_mode boolean. Enabled by default.
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78 setsebool -P daemons_enable_cluster_mode 1
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82 If you want to allow all daemons to use tcp wrappers, you must turn on
83 the daemons_use_tcp_wrapper boolean. Disabled by default.
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85 setsebool -P daemons_use_tcp_wrapper 1
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89 If you want to allow all daemons the ability to read/write terminals,
90 you must turn on the daemons_use_tty boolean. Disabled by default.
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92 setsebool -P daemons_use_tty 1
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96 If you want to deny any process from ptracing or debugging any other
97 processes, you must turn on the deny_ptrace boolean. Enabled by
98 default.
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100 setsebool -P deny_ptrace 1
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104 If you want to allow any process to mmap any file on system with
105 attribute file_type, you must turn on the domain_can_mmap_files bool‐
106 ean. Enabled by default.
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108 setsebool -P domain_can_mmap_files 1
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112 If you want to allow all domains write to kmsg_device, while kernel is
113 executed with systemd.log_target=kmsg parameter, you must turn on the
114 domain_can_write_kmsg boolean. Disabled by default.
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116 setsebool -P domain_can_write_kmsg 1
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120 If you want to allow all domains to use other domains file descriptors,
121 you must turn on the domain_fd_use boolean. Enabled by default.
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123 setsebool -P domain_fd_use 1
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127 If you want to allow all domains to have the kernel load modules, you
128 must turn on the domain_kernel_load_modules boolean. Disabled by
129 default.
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131 setsebool -P domain_kernel_load_modules 1
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135 If you want to allow all domains to execute in fips_mode, you must turn
136 on the fips_mode boolean. Enabled by default.
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138 setsebool -P fips_mode 1
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142 If you want to enable reading of urandom for all domains, you must turn
143 on the global_ssp boolean. Disabled by default.
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145 setsebool -P global_ssp 1
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149 If you want to allow confined applications to run with kerberos, you
150 must turn on the kerberos_enabled boolean. Enabled by default.
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152 setsebool -P kerberos_enabled 1
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156 If you want to allow system to run with NIS, you must turn on the
157 nis_enabled boolean. Disabled by default.
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159 setsebool -P nis_enabled 1
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163 If you want to allow confined applications to use nscd shared memory,
164 you must turn on the nscd_use_shm boolean. Disabled by default.
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166 setsebool -P nscd_use_shm 1
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171 The SELinux process type systemd_machined_t can manage files labeled
172 with the following file types. The paths listed are the default paths
173 for these file types. Note the processes UID still need to have DAC
174 permissions.
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176 cluster_conf_t
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178 /etc/cluster(/.*)?
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180 cluster_var_lib_t
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182 /var/lib/pcsd(/.*)?
183 /var/lib/cluster(/.*)?
184 /var/lib/openais(/.*)?
185 /var/lib/pengine(/.*)?
186 /var/lib/corosync(/.*)?
187 /usr/lib/heartbeat(/.*)?
188 /var/lib/heartbeat(/.*)?
189 /var/lib/pacemaker(/.*)?
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191 cluster_var_run_t
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193 /var/run/crm(/.*)?
194 /var/run/cman_.*
195 /var/run/rsctmp(/.*)?
196 /var/run/aisexec.*
197 /var/run/heartbeat(/.*)?
198 /var/run/corosync-qnetd(/.*)?
199 /var/run/corosync-qdevice(/.*)?
200 /var/run/cpglockd.pid
201 /var/run/corosync.pid
202 /var/run/rgmanager.pid
203 /var/run/cluster/rgmanager.sk
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205 root_t
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207 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
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209 /initrd
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211 systemd_machined_var_lib_t
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213 /var/lib/machines(/.*)?
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215 systemd_machined_var_run_t
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217 /var/run/systemd/machines(/.*)?
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221 SELinux requires files to have an extended attribute to define the file
222 type.
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224 You can see the context of a file using the -Z option to ls
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226 Policy governs the access confined processes have to these files.
227 SELinux systemd_machined policy is very flexible allowing users to set‐
228 up their systemd_machined processes in as secure a method as possible.
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230 STANDARD FILE CONTEXT
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232 SELinux defines the file context types for the systemd_machined, if you
233 wanted to store files with these types in a diffent paths, you need to
234 execute the semanage command to sepecify alternate labeling and then
235 use restorecon to put the labels on disk.
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237 semanage fcontext -a -t systemd_machined_var_run_t '/srv/mysys‐
238 temd_machined_content(/.*)?'
239 restorecon -R -v /srv/mysystemd_machined_content
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241 Note: SELinux often uses regular expressions to specify labels that
242 match multiple files.
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244 The following file types are defined for systemd_machined:
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248 systemd_machined_exec_t
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250 - Set files with the systemd_machined_exec_t type, if you want to tran‐
251 sition an executable to the systemd_machined_t domain.
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255 systemd_machined_unit_file_t
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257 - Set files with the systemd_machined_unit_file_t type, if you want to
258 treat the files as systemd machined unit content.
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262 systemd_machined_var_lib_t
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264 - Set files with the systemd_machined_var_lib_t type, if you want to
265 store the systemd machined files under the /var/lib directory.
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269 systemd_machined_var_run_t
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271 - Set files with the systemd_machined_var_run_t type, if you want to
272 store the systemd machined files under the /run or /var/run directory.
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276 Note: File context can be temporarily modified with the chcon command.
277 If you want to permanently change the file context you need to use the
278 semanage fcontext command. This will modify the SELinux labeling data‐
279 base. You will need to use restorecon to apply the labels.
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283 semanage fcontext can also be used to manipulate default file context
284 mappings.
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286 semanage permissive can also be used to manipulate whether or not a
287 process type is permissive.
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289 semanage module can also be used to enable/disable/install/remove pol‐
290 icy modules.
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292 semanage boolean can also be used to manipulate the booleans
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295 system-config-selinux is a GUI tool available to customize SELinux pol‐
296 icy settings.
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300 This manual page was auto-generated using sepolicy manpage .
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304 selinux(8), systemd_machined(8), semanage(8), restorecon(8), chcon(1),
305 sepolicy(8) , setsebool(8)
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309systemd_machined 19-04-25 systemd_machined_selinux(8)