1evtchnd_selinux(8) SELinux Policy evtchnd evtchnd_selinux(8)
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6 evtchnd_selinux - Security Enhanced Linux Policy for the evtchnd pro‐
7 cesses
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10 Security-Enhanced Linux secures the evtchnd processes via flexible
11 mandatory access control.
12 The evtchnd processes execute with the evtchnd_t SELinux type. You can
14 check if you have these processes running by executing the ps command
15 with the -Z qualifier.
16 For example:
18 ps -eZ | grep evtchnd_t
20
24 The evtchnd_t SELinux type can be entered via the evtchnd_exec_t file
25 type.
26 The default entrypoint paths for the evtchnd_t domain are the follow‐
28 ing:
29 /usr/sbin/evtchnd
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 evtchnd policy is very flexible allowing users to setup their evtchnd
40 processes in as secure a method as possible.
41 The following process types are defined for evtchnd:
43 evtchnd_t
45 Note: semanage permissive -a evtchnd_t can be used to make the process
47 type evtchnd_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
50
53 SELinux policy is customizable based on least access required. evtchnd
54 policy is extremely flexible and has several booleans that allow you to
55 manipulate the policy and run evtchnd with the tightest access possi‐
56 ble.
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 evtchnd_t can manage files labeled with the
143 following file types. The paths listed are the default paths for these
144 file types. Note the processes UID still need to have DAC permissions.
145 cluster_conf_t
147 /etc/cluster(/.*)?
149 cluster_var_lib_t
151 /var/lib/pcsd(/.*)?
153 /var/lib/cluster(/.*)?
154 /var/lib/openais(/.*)?
155 /var/lib/pengine(/.*)?
156 /var/lib/corosync(/.*)?
157 /usr/lib/heartbeat(/.*)?
158 /var/lib/heartbeat(/.*)?
159 /var/lib/pacemaker(/.*)?
160 cluster_var_run_t
162 /var/run/crm(/.*)?
164 /var/run/cman_.*
165 /var/run/rsctmp(/.*)?
166 /var/run/aisexec.*
167 /var/run/heartbeat(/.*)?
168 /var/run/corosync-qnetd(/.*)?
169 /var/run/corosync-qdevice(/.*)?
170 /var/run/cpglockd.pid
171 /var/run/corosync.pid
172 /var/run/rgmanager.pid
173 /var/run/cluster/rgmanager.sk
174 evtchnd_var_log_t
176 /var/log/evtchnd.log.*
178 evtchnd_var_run_t
180 /var/run/evtchnd
182 /var/run/evtchnd.pid
183 root_t
185 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
187 /
188 /initrd
189
192 SELinux requires files to have an extended attribute to define the file
193 type.
194 You can see the context of a file using the -Z option to ls
196 Policy governs the access confined processes have to these files.
198 SELinux evtchnd policy is very flexible allowing users to setup their
199 evtchnd processes in as secure a method as possible.
200 STANDARD FILE CONTEXT
202 SELinux defines the file context types for the evtchnd, if you wanted
204 to store files with these types in a diffent paths, you need to execute
205 the semanage command to sepecify alternate labeling and then use
206 restorecon to put the labels on disk.
207 semanage fcontext -a -t evtchnd_var_run_t '/srv/myevtchnd_con‐
209 tent(/.*)?'
210 restorecon -R -v /srv/myevtchnd_content
211 Note: SELinux often uses regular expressions to specify labels that
213 match multiple files.
214 The following file types are defined for evtchnd:
216 evtchnd_exec_t
220 - Set files with the evtchnd_exec_t type, if you want to transition an
222 executable to the evtchnd_t domain.
223 evtchnd_var_log_t
227 - Set files with the evtchnd_var_log_t type, if you want to treat the
229 data as evtchnd var log data, usually stored under the /var/log direc‐
230 tory.
231 evtchnd_var_run_t
235 - Set files with the evtchnd_var_run_t type, if you want to store the
237 evtchnd files under the /run or /var/run directory.
238 Paths:
241 /var/run/evtchnd, /var/run/evtchnd.pid
242 Note: File context can be temporarily modified with the chcon command.
245 If you want to permanently change the file context you need to use the
246 semanage fcontext command. This will modify the SELinux labeling data‐
247 base. You will need to use restorecon to apply the labels.
248
251 semanage fcontext can also be used to manipulate default file context
252 mappings.
253 semanage permissive can also be used to manipulate whether or not a
255 process type is permissive.
256 semanage module can also be used to enable/disable/install/remove pol‐
258 icy modules.
259 semanage boolean can also be used to manipulate the booleans
261 system-config-selinux is a GUI tool available to customize SELinux pol‐
264 icy settings.
265
268 This manual page was auto-generated using sepolicy manpage .
269
272 selinux(8), evtchnd(8), semanage(8), restorecon(8), chcon(1), sepol‐
273 icy(8) , setsebool(8)
274evtchnd 19-04-25 evtchnd_selinux(8)