1cachefilesd_selinux(8) SELinux Policy cachefilesd cachefilesd_selinux(8)
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6 cachefilesd_selinux - Security Enhanced Linux Policy for the
7 cachefilesd processes
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10 Security-Enhanced Linux secures the cachefilesd processes via flexible
11 mandatory access control.
12 The cachefilesd processes execute with the cachefilesd_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16 For example:
18 ps -eZ | grep cachefilesd_t
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24 The cachefilesd_t SELinux type can be entered via the
25 cachefilesd_exec_t file type.
26 The default entrypoint paths for the cachefilesd_t domain are the fol‐
28 lowing:
29 /sbin/cachefilesd, /usr/sbin/cachefilesd
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 cachefilesd policy is very flexible allowing users to setup their
40 cachefilesd processes in as secure a method as possible.
41 The following process types are defined for cachefilesd:
43 cachefilesd_t, cachefiles_kernel_t
45 Note: semanage permissive -a cachefilesd_t can be used to make the
47 process type cachefilesd_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
53 SELinux policy is customizable based on least access required.
54 cachefilesd policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run cachefilesd with the tight‐
56 est access possible.
57 If you want to allow all daemons to write corefiles to /, you must turn
61 on the daemons_dump_core boolean. Disabled by default.
62 setsebool -P daemons_dump_core 1
64 If you want to enable cluster mode for daemons, you must turn on the
68 daemons_enable_cluster_mode boolean. Enabled by default.
69 setsebool -P daemons_enable_cluster_mode 1
71 If you want to allow all daemons to use tcp wrappers, you must turn on
75 the daemons_use_tcp_wrapper boolean. Disabled by default.
76 setsebool -P daemons_use_tcp_wrapper 1
78 If you want to allow all daemons the ability to read/write terminals,
82 you must turn on the daemons_use_tty boolean. Disabled by default.
83 setsebool -P daemons_use_tty 1
85 If you want to deny any process from ptracing or debugging any other
89 processes, you must turn on the deny_ptrace boolean. Enabled by
90 default.
91 setsebool -P deny_ptrace 1
93 If you want to allow any process to mmap any file on system with
97 attribute file_type, you must turn on the domain_can_mmap_files bool‐
98 ean. Enabled by default.
99 setsebool -P domain_can_mmap_files 1
101 If you want to allow all domains write to kmsg_device, while kernel is
105 executed with systemd.log_target=kmsg parameter, you must turn on the
106 domain_can_write_kmsg boolean. Disabled by default.
107 setsebool -P domain_can_write_kmsg 1
109 If you want to allow all domains to use other domains file descriptors,
113 you must turn on the domain_fd_use boolean. Enabled by default.
114 setsebool -P domain_fd_use 1
116 If you want to allow all domains to have the kernel load modules, you
120 must turn on the domain_kernel_load_modules boolean. Disabled by
121 default.
122 setsebool -P domain_kernel_load_modules 1
124 If you want to allow all domains to execute in fips_mode, you must turn
128 on the fips_mode boolean. Enabled by default.
129 setsebool -P fips_mode 1
131 If you want to enable reading of urandom for all domains, you must turn
135 on the global_ssp boolean. Disabled by default.
136 setsebool -P global_ssp 1
138
142 The SELinux process type cachefilesd_t can manage files labeled with
143 the following file types. The paths listed are the default paths for
144 these file types. Note the processes UID still need to have DAC per‐
145 missions.
146 cachefiles_var_t
148 /var/fscache(/.*)?
150 /var/cache/fscache(/.*)?
151 cachefilesd_var_run_t
153 /var/run/cachefilesd.pid
155 cluster_conf_t
157 /etc/cluster(/.*)?
159 cluster_var_lib_t
161 /var/lib/pcsd(/.*)?
163 /var/lib/cluster(/.*)?
164 /var/lib/openais(/.*)?
165 /var/lib/pengine(/.*)?
166 /var/lib/corosync(/.*)?
167 /usr/lib/heartbeat(/.*)?
168 /var/lib/heartbeat(/.*)?
169 /var/lib/pacemaker(/.*)?
170 cluster_var_run_t
172 /var/run/crm(/.*)?
174 /var/run/cman_.*
175 /var/run/rsctmp(/.*)?
176 /var/run/aisexec.*
177 /var/run/heartbeat(/.*)?
178 /var/run/corosync-qnetd(/.*)?
179 /var/run/corosync-qdevice(/.*)?
180 /var/run/cpglockd.pid
181 /var/run/corosync.pid
182 /var/run/rgmanager.pid
183 /var/run/cluster/rgmanager.sk
184 root_t
186 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
188 /
189 /initrd
190
193 SELinux requires files to have an extended attribute to define the file
194 type.
195 You can see the context of a file using the -Z option to ls
197 Policy governs the access confined processes have to these files.
199 SELinux cachefilesd policy is very flexible allowing users to setup
200 their cachefilesd processes in as secure a method as possible.
201 STANDARD FILE CONTEXT
203 SELinux defines the file context types for the cachefilesd, if you
205 wanted to store files with these types in a diffent paths, you need to
206 execute the semanage command to sepecify alternate labeling and then
207 use restorecon to put the labels on disk.
208 semanage fcontext -a -t cachefilesd_var_run_t '/srv/mycachefilesd_con‐
210 tent(/.*)?'
211 restorecon -R -v /srv/mycachefilesd_content
212 Note: SELinux often uses regular expressions to specify labels that
214 match multiple files.
215 The following file types are defined for cachefilesd:
217 cachefilesd_exec_t
221 - Set files with the cachefilesd_exec_t type, if you want to transition
223 an executable to the cachefilesd_t domain.
224 Paths:
227 /sbin/cachefilesd, /usr/sbin/cachefilesd
228 cachefilesd_var_run_t
231 - Set files with the cachefilesd_var_run_t type, if you want to store
233 the cachefilesd files under the /run or /var/run directory.
234 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.
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261 This manual page was auto-generated using sepolicy manpage .
262
265 selinux(8), cachefilesd(8), semanage(8), restorecon(8), chcon(1),
266 sepolicy(8) , setsebool(8), cachefiles_kernel_selinux(8)
267cachefilesd 19-04-25 cachefilesd_selinux(8)