1tcsd_selinux(8) SELinux Policy tcsd tcsd_selinux(8)
2
6 tcsd_selinux - Security Enhanced Linux Policy for the tcsd processes
7
9 Security-Enhanced Linux secures the tcsd processes via flexible manda‐
10 tory access control.
11 The tcsd processes execute with the tcsd_t SELinux type. You can check
13 if you have these processes running by executing the ps command with
14 the -Z qualifier.
15 For example:
17 ps -eZ | grep tcsd_t
19
23 The tcsd_t SELinux type can be entered via the tcsd_exec_t file type.
24 The default entrypoint paths for the tcsd_t domain are the following:
26 /usr/sbin/tcsd
28
30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 tcsd policy is very flexible allowing users to setup their tcsd pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for tcsd:
40 tcsd_t
42 Note: semanage permissive -a tcsd_t can be used to make the process
44 type tcsd_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
47
50 SELinux policy is customizable based on least access required. tcsd
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run tcsd with the tightest access possible.
53 If you want to dontaudit all daemons scheduling requests (setsched,
57 sys_nice), you must turn on the daemons_dontaudit_scheduling boolean.
58 Enabled by default.
59 setsebool -P daemons_dontaudit_scheduling 1
61 If you want to allow all domains to execute in fips_mode, you must turn
65 on the fips_mode boolean. Enabled by default.
66 setsebool -P fips_mode 1
68 If you want to allow system to run with NIS, you must turn on the
72 nis_enabled boolean. Disabled by default.
73 setsebool -P nis_enabled 1
75
79 SELinux defines port types to represent TCP and UDP ports.
80 You can see the types associated with a port by using the following
82 command:
83 semanage port -l
85 Policy governs the access confined processes have to these ports.
88 SELinux tcsd policy is very flexible allowing users to setup their tcsd
89 processes in as secure a method as possible.
90 The following port types are defined for tcsd:
92 tcs_port_t
95 Default Defined Ports:
99 tcp 30003
100
102 The SELinux process type tcsd_t can manage files labeled with the fol‐
103 lowing file types. The paths listed are the default paths for these
104 file types. Note the processes UID still need to have DAC permissions.
105 cluster_conf_t
107 /etc/cluster(/.*)?
109 cluster_var_lib_t
111 /var/lib/pcsd(/.*)?
113 /var/lib/cluster(/.*)?
114 /var/lib/openais(/.*)?
115 /var/lib/pengine(/.*)?
116 /var/lib/corosync(/.*)?
117 /usr/lib/heartbeat(/.*)?
118 /var/lib/heartbeat(/.*)?
119 /var/lib/pacemaker(/.*)?
120 cluster_var_run_t
122 /var/run/crm(/.*)?
124 /var/run/cman_.*
125 /var/run/rsctmp(/.*)?
126 /var/run/aisexec.*
127 /var/run/heartbeat(/.*)?
128 /var/run/pcsd-ruby.socket
129 /var/run/corosync-qnetd(/.*)?
130 /var/run/corosync-qdevice(/.*)?
131 /var/run/corosync.pid
132 /var/run/cpglockd.pid
133 /var/run/rgmanager.pid
134 /var/run/cluster/rgmanager.sk
135 krb5_host_rcache_t
137 /var/tmp/krb5_0.rcache2
139 /var/cache/krb5rcache(/.*)?
140 /var/tmp/nfs_0
141 /var/tmp/DNS_25
142 /var/tmp/host_0
143 /var/tmp/imap_0
144 /var/tmp/HTTP_23
145 /var/tmp/HTTP_48
146 /var/tmp/ldap_55
147 /var/tmp/ldap_487
148 /var/tmp/ldapmap1_0
149 root_t
151 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
153 /
154 /initrd
155 tcsd_var_lib_t
157 /var/lib/tpm(/.*)?
159
162 SELinux requires files to have an extended attribute to define the file
163 type.
164 You can see the context of a file using the -Z option to ls
166 Policy governs the access confined processes have to these files.
168 SELinux tcsd policy is very flexible allowing users to setup their tcsd
169 processes in as secure a method as possible.
170 STANDARD FILE CONTEXT
172 SELinux defines the file context types for the tcsd, if you wanted to
174 store files with these types in a different paths, you need to execute
175 the semanage command to specify alternate labeling and then use re‐
176 storecon to put the labels on disk.
177 semanage fcontext -a -t tcsd_exec_t '/srv/tcsd/content(/.*)?'
179 restorecon -R -v /srv/mytcsd_content
180 Note: SELinux often uses regular expressions to specify labels that
182 match multiple files.
183 The following file types are defined for tcsd:
185 tcsd_exec_t
189 - Set files with the tcsd_exec_t type, if you want to transition an ex‐
191 ecutable to the tcsd_t domain.
192 tcsd_initrc_exec_t
196 - Set files with the tcsd_initrc_exec_t type, if you want to transition
198 an executable to the tcsd_initrc_t domain.
199 tcsd_var_lib_t
203 - Set files with the tcsd_var_lib_t type, if you want to store the tcsd
205 files under the /var/lib directory.
206 Note: File context can be temporarily modified with the chcon command.
210 If you want to permanently change the file context you need to use the
211 semanage fcontext command. This will modify the SELinux labeling data‐
212 base. You will need to use restorecon to apply the labels.
213
216 semanage fcontext can also be used to manipulate default file context
217 mappings.
218 semanage permissive can also be used to manipulate whether or not a
220 process type is permissive.
221 semanage module can also be used to enable/disable/install/remove pol‐
223 icy modules.
224 semanage port can also be used to manipulate the port definitions
226 semanage boolean can also be used to manipulate the booleans
228 system-config-selinux is a GUI tool available to customize SELinux pol‐
231 icy settings.
232
235 This manual page was auto-generated using sepolicy manpage .
236
239 selinux(8), tcsd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
240 setsebool(8)
241tcsd 23-10-20 tcsd_selinux(8)