1systemd_tmpfiles_selinux(S8E)Linux Policy systemd_tmpfislyesstemd_tmpfiles_selinux(8)
2
6 systemd_tmpfiles_selinux - Security Enhanced Linux Policy for the sys‐
7 temd_tmpfiles processes
8
10 Security-Enhanced Linux secures the systemd_tmpfiles processes via
11 flexible mandatory access control.
12 The systemd_tmpfiles processes execute with the systemd_tmpfiles_t
14 SELinux type. You can check if you have these processes running by exe‐
15 cuting the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep systemd_tmpfiles_t
20
24 The systemd_tmpfiles_t SELinux type can be entered via the systemd_tmp‐
25 files_exec_t file type.
26 The default entrypoint paths for the systemd_tmpfiles_t domain are the
28 following:
29 /bin/systemd-tmpfiles, /usr/bin/systemd-tmpfiles, /usr/lib/systemd/sys‐
31 temd-tmpfiles
32
34 SELinux defines process types (domains) for each process running on the
35 system
36 You can see the context of a process using the -Z option to ps
38 Policy governs the access confined processes have to files. SELinux
40 systemd_tmpfiles policy is very flexible allowing users to setup their
41 systemd_tmpfiles processes in as secure a method as possible.
42 The following process types are defined for systemd_tmpfiles:
44 systemd_tmpfiles_t
46 Note: semanage permissive -a systemd_tmpfiles_t can be used to make the
48 process type systemd_tmpfiles_t permissive. SELinux does not deny
49 access to permissive process types, but the AVC (SELinux denials) mes‐
50 sages are still generated.
51
54 SELinux policy is customizable based on least access required. sys‐
55 temd_tmpfiles policy is extremely flexible and has several booleans
56 that allow you to manipulate the policy and run systemd_tmpfiles with
57 the tightest access possible.
58 If you want to allow users to resolve user passwd entries directly from
62 ldap rather then using a sssd server, you must turn on the authlo‐
63 gin_nsswitch_use_ldap boolean. Disabled by default.
64 setsebool -P authlogin_nsswitch_use_ldap 1
66 If you want to allow all daemons to write corefiles to /, you must turn
70 on the daemons_dump_core boolean. Disabled by default.
71 setsebool -P daemons_dump_core 1
73 If you want to enable cluster mode for daemons, you must turn on the
77 daemons_enable_cluster_mode boolean. Enabled by default.
78 setsebool -P daemons_enable_cluster_mode 1
80 If you want to allow all daemons to use tcp wrappers, you must turn on
84 the daemons_use_tcp_wrapper boolean. Disabled by default.
85 setsebool -P daemons_use_tcp_wrapper 1
87 If you want to allow all daemons the ability to read/write terminals,
91 you must turn on the daemons_use_tty boolean. Disabled by default.
92 setsebool -P daemons_use_tty 1
94 If you want to deny any process from ptracing or debugging any other
98 processes, you must turn on the deny_ptrace boolean. Enabled by
99 default.
100 setsebool -P deny_ptrace 1
102 If you want to allow any process to mmap any file on system with
106 attribute file_type, you must turn on the domain_can_mmap_files bool‐
107 ean. Enabled by default.
108 setsebool -P domain_can_mmap_files 1
110 If you want to allow all domains write to kmsg_device, while kernel is
114 executed with systemd.log_target=kmsg parameter, you must turn on the
115 domain_can_write_kmsg boolean. Disabled by default.
116 setsebool -P domain_can_write_kmsg 1
118 If you want to allow all domains to use other domains file descriptors,
122 you must turn on the domain_fd_use boolean. Enabled by default.
123 setsebool -P domain_fd_use 1
125 If you want to allow all domains to have the kernel load modules, you
129 must turn on the domain_kernel_load_modules boolean. Disabled by
130 default.
131 setsebool -P domain_kernel_load_modules 1
133 If you want to allow all domains to execute in fips_mode, you must turn
137 on the fips_mode boolean. Enabled by default.
138 setsebool -P fips_mode 1
140 If you want to enable reading of urandom for all domains, you must turn
144 on the global_ssp boolean. Disabled by default.
145 setsebool -P global_ssp 1
147 If you want to allow confined applications to run with kerberos, you
151 must turn on the kerberos_enabled boolean. Enabled by default.
152 setsebool -P kerberos_enabled 1
154 If you want to allow system to run with NIS, you must turn on the
158 nis_enabled boolean. Disabled by default.
159 setsebool -P nis_enabled 1
161 If you want to allow confined applications to use nscd shared memory,
165 you must turn on the nscd_use_shm boolean. Disabled by default.
166 setsebool -P nscd_use_shm 1
168
172 The SELinux process type systemd_tmpfiles_t can manage files labeled
173 with the following file types. The paths listed are the default paths
174 for these file types. Note the processes UID still need to have DAC
175 permissions.
176 cluster_var_lib_t
178 /var/lib/pcsd(/.*)?
180 /var/lib/cluster(/.*)?
181 /var/lib/openais(/.*)?
182 /var/lib/pengine(/.*)?
183 /var/lib/corosync(/.*)?
184 /usr/lib/heartbeat(/.*)?
185 /var/lib/heartbeat(/.*)?
186 /var/lib/pacemaker(/.*)?
187 cluster_var_run_t
189 /var/run/crm(/.*)?
191 /var/run/cman_.*
192 /var/run/rsctmp(/.*)?
193 /var/run/aisexec.*
194 /var/run/heartbeat(/.*)?
195 /var/run/corosync-qnetd(/.*)?
196 /var/run/corosync-qdevice(/.*)?
197 /var/run/cpglockd.pid
198 /var/run/corosync.pid
199 /var/run/rgmanager.pid
200 /var/run/cluster/rgmanager.sk
201 non_auth_file_type
203 print_spool_t
206 /var/spool/lpd(/.*)?
208 /var/spool/cups(/.*)?
209 /var/spool/cups-pdf(/.*)?
210
213 SELinux requires files to have an extended attribute to define the file
214 type.
215 You can see the context of a file using the -Z option to ls
217 Policy governs the access confined processes have to these files.
219 SELinux systemd_tmpfiles policy is very flexible allowing users to set‐
220 up their systemd_tmpfiles processes in as secure a method as possible.
221 The following file types are defined for systemd_tmpfiles:
223 systemd_tmpfiles_exec_t
227 - Set files with the systemd_tmpfiles_exec_t type, if you want to tran‐
229 sition an executable to the systemd_tmpfiles_t domain.
230 Paths:
233 /bin/systemd-tmpfiles, /usr/bin/systemd-tmpfiles, /usr/lib/sys‐
234 temd/systemd-tmpfiles
235 Note: File context can be temporarily modified with the chcon command.
238 If you want to permanently change the file context you need to use the
239 semanage fcontext command. This will modify the SELinux labeling data‐
240 base. You will need to use restorecon to apply the labels.
241
244 semanage fcontext can also be used to manipulate default file context
245 mappings.
246 semanage permissive can also be used to manipulate whether or not a
248 process type is permissive.
249 semanage module can also be used to enable/disable/install/remove pol‐
251 icy modules.
252 semanage boolean can also be used to manipulate the booleans
254 system-config-selinux is a GUI tool available to customize SELinux pol‐
257 icy settings.
258
261 This manual page was auto-generated using sepolicy manpage .
262
265 selinux(8), systemd_tmpfiles(8), semanage(8), restorecon(8), chcon(1),
266 sepolicy(8) , setsebool(8)
267systemd_tmpfiles 19-04-25 systemd_tmpfiles_selinux(8)