1lttng_sessiond_selinux(8)SELinux Policy lttng_sessiondlttng_sessiond_selinux(8)
2
3
4
6 lttng_sessiond_selinux - Security Enhanced Linux Policy for the
7 lttng_sessiond processes
8
10 Security-Enhanced Linux secures the lttng_sessiond processes via flexi‐
11 ble mandatory access control.
12
13 The lttng_sessiond processes execute with the lttng_sessiond_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
16
17 For example:
18
19 ps -eZ | grep lttng_sessiond_t
20
21
22
24 The lttng_sessiond_t SELinux type can be entered via the lttng_ses‐
25 siond_exec_t file type.
26
27 The default entrypoint paths for the lttng_sessiond_t domain are the
28 following:
29
30 /usr/bin/lttng-sessiond
31
33 SELinux defines process types (domains) for each process running on the
34 system
35
36 You can see the context of a process using the -Z option to ps
37
38 Policy governs the access confined processes have to files. SELinux
39 lttng_sessiond policy is very flexible allowing users to setup their
40 lttng_sessiond processes in as secure a method as possible.
41
42 The following process types are defined for lttng_sessiond:
43
44 lttng_sessiond_t
45
46 Note: semanage permissive -a lttng_sessiond_t can be used to make the
47 process type lttng_sessiond_t permissive. SELinux does not deny access
48 to permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
51
53 SELinux policy is customizable based on least access required.
54 lttng_sessiond policy is extremely flexible and has several booleans
55 that allow you to manipulate the policy and run lttng_sessiond with the
56 tightest access possible.
57
58
59
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.
63
64 setsebool -P authlogin_nsswitch_use_ldap 1
65
66
67
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.
70
71 setsebool -P daemons_dump_core 1
72
73
74
75 If you want to enable cluster mode for daemons, you must turn on the
76 daemons_enable_cluster_mode boolean. Enabled by default.
77
78 setsebool -P daemons_enable_cluster_mode 1
79
80
81
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.
84
85 setsebool -P daemons_use_tcp_wrapper 1
86
87
88
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.
91
92 setsebool -P daemons_use_tty 1
93
94
95
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.
99
100 setsebool -P deny_ptrace 1
101
102
103
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.
107
108 setsebool -P domain_can_mmap_files 1
109
110
111
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.
115
116 setsebool -P domain_can_write_kmsg 1
117
118
119
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.
122
123 setsebool -P domain_fd_use 1
124
125
126
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.
130
131 setsebool -P domain_kernel_load_modules 1
132
133
134
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.
137
138 setsebool -P fips_mode 1
139
140
141
142 If you want to enable reading of urandom for all domains, you must turn
143 on the global_ssp boolean. Disabled by default.
144
145 setsebool -P global_ssp 1
146
147
148
149 If you want to allow confined applications to run with kerberos, you
150 must turn on the kerberos_enabled boolean. Enabled by default.
151
152 setsebool -P kerberos_enabled 1
153
154
155
156 If you want to allow system to run with NIS, you must turn on the
157 nis_enabled boolean. Disabled by default.
158
159 setsebool -P nis_enabled 1
160
161
162
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.
165
166 setsebool -P nscd_use_shm 1
167
168
169
171 The SELinux process type lttng_sessiond_t can manage files labeled with
172 the following file types. The paths listed are the default paths for
173 these file types. Note the processes UID still need to have DAC per‐
174 missions.
175
176 cluster_conf_t
177
178 /etc/cluster(/.*)?
179
180 cluster_var_lib_t
181
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(/.*)?
190
191 cluster_var_run_t
192
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
204
205 lttng_sessiond_tmpfs_t
206
207
208 lttng_sessiond_var_run_t
209
210 /var/run/lttng(/.*)?
211
212 root_t
213
214 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
215 /
216 /initrd
217
218
220 SELinux requires files to have an extended attribute to define the file
221 type.
222
223 You can see the context of a file using the -Z option to ls
224
225 Policy governs the access confined processes have to these files.
226 SELinux lttng_sessiond policy is very flexible allowing users to setup
227 their lttng_sessiond processes in as secure a method as possible.
228
229 STANDARD FILE CONTEXT
230
231 SELinux defines the file context types for the lttng_sessiond, if you
232 wanted to store files with these types in a diffent paths, you need to
233 execute the semanage command to sepecify alternate labeling and then
234 use restorecon to put the labels on disk.
235
236 semanage fcontext -a -t lttng_sessiond_var_run_t '/srv/mylttng_ses‐
237 siond_content(/.*)?'
238 restorecon -R -v /srv/mylttng_sessiond_content
239
240 Note: SELinux often uses regular expressions to specify labels that
241 match multiple files.
242
243 The following file types are defined for lttng_sessiond:
244
245
246
247 lttng_sessiond_exec_t
248
249 - Set files with the lttng_sessiond_exec_t type, if you want to transi‐
250 tion an executable to the lttng_sessiond_t domain.
251
252
253
254 lttng_sessiond_tmpfs_t
255
256 - Set files with the lttng_sessiond_tmpfs_t type, if you want to store
257 lttng sessiond files on a tmpfs file system.
258
259
260
261 lttng_sessiond_unit_file_t
262
263 - Set files with the lttng_sessiond_unit_file_t type, if you want to
264 treat the files as lttng sessiond unit content.
265
266
267
268 lttng_sessiond_var_run_t
269
270 - Set files with the lttng_sessiond_var_run_t type, if you want to
271 store the lttng sessiond files under the /run or /var/run directory.
272
273
274
275 Note: File context can be temporarily modified with the chcon command.
276 If you want to permanently change the file context you need to use the
277 semanage fcontext command. This will modify the SELinux labeling data‐
278 base. You will need to use restorecon to apply the labels.
279
280
282 semanage fcontext can also be used to manipulate default file context
283 mappings.
284
285 semanage permissive can also be used to manipulate whether or not a
286 process type is permissive.
287
288 semanage module can also be used to enable/disable/install/remove pol‐
289 icy modules.
290
291 semanage boolean can also be used to manipulate the booleans
292
293
294 system-config-selinux is a GUI tool available to customize SELinux pol‐
295 icy settings.
296
297
299 This manual page was auto-generated using sepolicy manpage .
300
301
303 selinux(8), lttng_sessiond(8), semanage(8), restorecon(8), chcon(1),
304 sepolicy(8) , setsebool(8)
305
306
307
308lttng_sessiond 19-04-25 lttng_sessiond_selinux(8)