1systemd_resolved_selinux(S8E)Linux Policy systemd_resolsvyesdtemd_resolved_selinux(8)
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6 systemd_resolved_selinux - Security Enhanced Linux Policy for the sys‐
7 temd_resolved processes
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10 Security-Enhanced Linux secures the systemd_resolved processes via
11 flexible mandatory access control.
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13 The systemd_resolved processes execute with the systemd_resolved_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_resolved_t
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24 The systemd_resolved_t SELinux type can be entered via the sys‐
25 temd_resolved_exec_t file type.
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27 The default entrypoint paths for the systemd_resolved_t domain are the
28 following:
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30 /usr/lib/systemd/systemd-resolve(d|-host)
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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_resolved policy is very flexible allowing users to setup their
40 systemd_resolved processes in as secure a method as possible.
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42 The following process types are defined for systemd_resolved:
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44 systemd_resolved_t
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46 Note: semanage permissive -a systemd_resolved_t can be used to make the
47 process type systemd_resolved_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_resolved policy is extremely flexible and has several booleans
55 that allow you to manipulate the policy and run systemd_resolved 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 domains to execute in fips_mode, you must turn
69 on the fips_mode boolean. Enabled by default.
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71 setsebool -P fips_mode 1
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75 If you want to allow confined applications to run with kerberos, you
76 must turn on the kerberos_enabled boolean. Enabled by default.
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78 setsebool -P kerberos_enabled 1
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82 If you want to allow system to run with NIS, you must turn on the
83 nis_enabled boolean. Disabled by default.
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85 setsebool -P nis_enabled 1
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89 If you want to allow confined applications to use nscd shared memory,
90 you must turn on the nscd_use_shm boolean. Disabled by default.
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92 setsebool -P nscd_use_shm 1
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97 The SELinux process type systemd_resolved_t can manage files labeled
98 with the following file types. The paths listed are the default paths
99 for these file types. Note the processes UID still need to have DAC
100 permissions.
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102 cluster_conf_t
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104 /etc/cluster(/.*)?
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106 cluster_var_lib_t
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108 /var/lib/pcsd(/.*)?
109 /var/lib/cluster(/.*)?
110 /var/lib/openais(/.*)?
111 /var/lib/pengine(/.*)?
112 /var/lib/corosync(/.*)?
113 /usr/lib/heartbeat(/.*)?
114 /var/lib/heartbeat(/.*)?
115 /var/lib/pacemaker(/.*)?
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117 cluster_var_run_t
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119 /var/run/crm(/.*)?
120 /var/run/cman_.*
121 /var/run/rsctmp(/.*)?
122 /var/run/aisexec.*
123 /var/run/heartbeat(/.*)?
124 /var/run/corosync-qnetd(/.*)?
125 /var/run/corosync-qdevice(/.*)?
126 /var/run/corosync.pid
127 /var/run/cpglockd.pid
128 /var/run/rgmanager.pid
129 /var/run/cluster/rgmanager.sk
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131 net_conf_t
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133 /etc/hosts[^/]*
134 /etc/yp.conf.*
135 /etc/denyhosts.*
136 /etc/hosts.deny.*
137 /etc/resolv.conf.*
138 /etc/.resolv.conf.*
139 /etc/resolv-secure.conf.*
140 /var/run/cloud-init(/.*)?
141 /var/run/systemd/network(/.*)?
142 /etc/sysconfig/networking(/.*)?
143 /etc/sysconfig/network-scripts(/.*)?
144 /etc/sysconfig/network-scripts/.*resolv.conf
145 /var/run/NetworkManager/resolv.conf.*
146 /etc/ethers
147 /etc/ntp.conf
148 /var/run/systemd/resolve/resolv.conf
149 /var/run/systemd/resolve/stub-resolv.conf
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151 root_t
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153 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
154 /
155 /initrd
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157 systemd_resolved_var_run_t
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159 /run/systemd/resolve(/.*)?
160 /var/run/systemd/resolve(/.*)?
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164 SELinux requires files to have an extended attribute to define the file
165 type.
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167 You can see the context of a file using the -Z option to ls
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169 Policy governs the access confined processes have to these files.
170 SELinux systemd_resolved policy is very flexible allowing users to set‐
171 up their systemd_resolved processes in as secure a method as possible.
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173 STANDARD FILE CONTEXT
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175 SELinux defines the file context types for the systemd_resolved, if you
176 wanted to store files with these types in a diffent paths, you need to
177 execute the semanage command to sepecify alternate labeling and then
178 use restorecon to put the labels on disk.
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180 semanage fcontext -a -t systemd_resolved_unit_file_t '/srv/mysys‐
181 temd_resolved_content(/.*)?'
182 restorecon -R -v /srv/mysystemd_resolved_content
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184 Note: SELinux often uses regular expressions to specify labels that
185 match multiple files.
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187 The following file types are defined for systemd_resolved:
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191 systemd_resolved_exec_t
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193 - Set files with the systemd_resolved_exec_t type, if you want to tran‐
194 sition an executable to the systemd_resolved_t domain.
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198 systemd_resolved_unit_file_t
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200 - Set files with the systemd_resolved_unit_file_t type, if you want to
201 treat the files as systemd resolved unit content.
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205 systemd_resolved_var_run_t
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207 - Set files with the systemd_resolved_var_run_t type, if you want to
208 store the systemd resolved files under the /run or /var/run directory.
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211 Paths:
212 /run/systemd/resolve(/.*)?, /var/run/systemd/resolve(/.*)?
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215 Note: File context can be temporarily modified with the chcon command.
216 If you want to permanently change the file context you need to use the
217 semanage fcontext command. This will modify the SELinux labeling data‐
218 base. You will need to use restorecon to apply the labels.
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222 semanage fcontext can also be used to manipulate default file context
223 mappings.
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225 semanage permissive can also be used to manipulate whether or not a
226 process type is permissive.
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228 semanage module can also be used to enable/disable/install/remove pol‐
229 icy modules.
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231 semanage boolean can also be used to manipulate the booleans
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234 system-config-selinux is a GUI tool available to customize SELinux pol‐
235 icy settings.
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239 This manual page was auto-generated using sepolicy manpage .
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243 selinux(8), systemd_resolved(8), semanage(8), restorecon(8), chcon(1),
244 sepolicy(8), setsebool(8)
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248systemd_resolved 19-06-18 systemd_resolved_selinux(8)