1tcsd_selinux(8) SELinux Policy tcsd tcsd_selinux(8)
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6 tcsd_selinux - Security Enhanced Linux Policy for the tcsd processes
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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
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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
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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 allow all domains to execute in fips_mode, you must turn
57 on the fips_mode boolean. Enabled by default.
58 setsebool -P fips_mode 1
60
64 SELinux defines port types to represent TCP and UDP ports.
65 You can see the types associated with a port by using the following
67 command:
68 semanage port -l
70 Policy governs the access confined processes have to these ports.
73 SELinux tcsd policy is very flexible allowing users to setup their tcsd
74 processes in as secure a method as possible.
75 The following port types are defined for tcsd:
77 tcs_port_t
80 Default Defined Ports:
84 tcp 30003
85
87 The SELinux process type tcsd_t can manage files labeled with the fol‐
88 lowing file types. The paths listed are the default paths for these
89 file types. Note the processes UID still need to have DAC permissions.
90 cluster_conf_t
92 /etc/cluster(/.*)?
94 cluster_var_lib_t
96 /var/lib/pcsd(/.*)?
98 /var/lib/cluster(/.*)?
99 /var/lib/openais(/.*)?
100 /var/lib/pengine(/.*)?
101 /var/lib/corosync(/.*)?
102 /usr/lib/heartbeat(/.*)?
103 /var/lib/heartbeat(/.*)?
104 /var/lib/pacemaker(/.*)?
105 cluster_var_run_t
107 /var/run/crm(/.*)?
109 /var/run/cman_.*
110 /var/run/rsctmp(/.*)?
111 /var/run/aisexec.*
112 /var/run/heartbeat(/.*)?
113 /var/run/corosync-qnetd(/.*)?
114 /var/run/corosync-qdevice(/.*)?
115 /var/run/corosync.pid
116 /var/run/cpglockd.pid
117 /var/run/rgmanager.pid
118 /var/run/cluster/rgmanager.sk
119 root_t
121 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
123 /
124 /initrd
125 tcsd_var_lib_t
127 /var/lib/tpm(/.*)?
129
132 SELinux requires files to have an extended attribute to define the file
133 type.
134 You can see the context of a file using the -Z option to ls
136 Policy governs the access confined processes have to these files.
138 SELinux tcsd policy is very flexible allowing users to setup their tcsd
139 processes in as secure a method as possible.
140 STANDARD FILE CONTEXT
142 SELinux defines the file context types for the tcsd, if you wanted to
144 store files with these types in a diffent paths, you need to execute
145 the semanage command to sepecify alternate labeling and then use
146 restorecon to put the labels on disk.
147 semanage fcontext -a -t tcsd_var_lib_t '/srv/mytcsd_content(/.*)?'
149 restorecon -R -v /srv/mytcsd_content
150 Note: SELinux often uses regular expressions to specify labels that
152 match multiple files.
153 The following file types are defined for tcsd:
155 tcsd_exec_t
159 - Set files with the tcsd_exec_t type, if you want to transition an
161 executable to the tcsd_t domain.
162 tcsd_initrc_exec_t
166 - Set files with the tcsd_initrc_exec_t type, if you want to transition
168 an executable to the tcsd_initrc_t domain.
169 tcsd_var_lib_t
173 - Set files with the tcsd_var_lib_t type, if you want to store the tcsd
175 files under the /var/lib directory.
176 Note: File context can be temporarily modified with the chcon command.
180 If you want to permanently change the file context you need to use the
181 semanage fcontext command. This will modify the SELinux labeling data‐
182 base. You will need to use restorecon to apply the labels.
183
186 semanage fcontext can also be used to manipulate default file context
187 mappings.
188 semanage permissive can also be used to manipulate whether or not a
190 process type is permissive.
191 semanage module can also be used to enable/disable/install/remove pol‐
193 icy modules.
194 semanage port can also be used to manipulate the port definitions
196 semanage boolean can also be used to manipulate the booleans
198 system-config-selinux is a GUI tool available to customize SELinux pol‐
201 icy settings.
202
205 This manual page was auto-generated using sepolicy manpage .
206
209 selinux(8), tcsd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
210 setsebool(8)
211tcsd 21-03-26 tcsd_selinux(8)