chronyd_selinux(8)

1chronyd_selinux(8)          SELinux Policy chronyd          chronyd_selinux(8)
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NAME

6       chronyd_selinux  -  Security Enhanced Linux Policy for the chronyd pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux secures  the  chronyd  processes  via  flexible
11       mandatory access control.
12
13       The  chronyd processes execute with the chronyd_t SELinux type. You can
14       check if you have these processes running by executing the  ps  command
15       with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep chronyd_t
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ENTRYPOINTS

24       The  chronyd_t  SELinux type can be entered via the chronyd_exec_t file
25       type.
26
27       The default entrypoint paths for the chronyd_t domain are  the  follow‐
28       ing:
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30       /usr/sbin/chronyd, /usr/libexec/chrony-helper
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PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
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36       You can see the context of a process using the -Z option to ps
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38       Policy governs the access confined processes have  to  files.   SELinux
39       chronyd  policy  is very flexible allowing users to setup their chronyd
40       processes in as secure a method as possible.
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42       The following process types are defined for chronyd:
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44       chronyd_t
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46       Note: semanage permissive -a chronyd_t can be used to make the  process
47       type  chronyd_t  permissive. SELinux does not deny access to permissive
48       process types, but the AVC (SELinux denials) messages are still  gener‐
49       ated.
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51

BOOLEANS

53       SELinux policy is customizable based on least access required.  chronyd
54       policy is extremely flexible and has several booleans that allow you to
55       manipulate  the  policy and run chronyd with the tightest access possi‐
56       ble.
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60       If you want to allow all domains to execute in fips_mode, you must turn
61       on the fips_mode boolean. Enabled by default.
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63       setsebool -P fips_mode 1
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67       If  you  want  to  allow  system  to run with NIS, you must turn on the
68       nis_enabled boolean. Disabled by default.
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70       setsebool -P nis_enabled 1
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PORT TYPES

75       SELinux defines port types to represent TCP and UDP ports.
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77       You can see the types associated with a port  by  using  the  following
78       command:
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80       semanage port -l
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83       Policy  governs  the  access  confined  processes  have to these ports.
84       SELinux chronyd policy is very flexible allowing users to  setup  their
85       chronyd processes in as secure a method as possible.
86
87       The following port types are defined for chronyd:
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89
90       chronyd_port_t
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94       Default Defined Ports:
95                 udp 323
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MANAGED FILES

98       The  SELinux  process  type chronyd_t can manage files labeled with the
99       following file types.  The paths listed are the default paths for these
100       file types.  Note the processes UID still need to have DAC permissions.
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102       chronyd_tmpfs_t
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105       chronyd_var_lib_t
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107            /var/lib/chrony(/.*)?
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109       chronyd_var_run_t
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111            /var/run/chrony(/.*)?
112            /var/run/chronyd(/.*)?
113            /var/run/chrony-helper(/.*)?
114            /var/run/chronyd.pid
115            /var/run/chronyd.sock
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117       cluster_conf_t
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119            /etc/cluster(/.*)?
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121       cluster_var_lib_t
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123            /var/lib/pcsd(/.*)?
124            /var/lib/cluster(/.*)?
125            /var/lib/openais(/.*)?
126            /var/lib/pengine(/.*)?
127            /var/lib/corosync(/.*)?
128            /usr/lib/heartbeat(/.*)?
129            /var/lib/heartbeat(/.*)?
130            /var/lib/pacemaker(/.*)?
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132       cluster_var_run_t
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134            /var/run/crm(/.*)?
135            /var/run/cman_.*
136            /var/run/rsctmp(/.*)?
137            /var/run/aisexec.*
138            /var/run/heartbeat(/.*)?
139            /var/run/corosync-qnetd(/.*)?
140            /var/run/corosync-qdevice(/.*)?
141            /var/run/corosync.pid
142            /var/run/cpglockd.pid
143            /var/run/rgmanager.pid
144            /var/run/cluster/rgmanager.sk
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146       gpsd_tmpfs_t
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149       root_t
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151            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
152            /
153            /initrd
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155       systemd_passwd_var_run_t
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157            /var/run/systemd/ask-password(/.*)?
158            /var/run/systemd/ask-password-block(/.*)?
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160       timemaster_tmpfs_t
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FILE CONTEXTS

165       SELinux requires files to have an extended attribute to define the file
166       type.
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168       You can see the context of a file using the -Z option to ls
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170       Policy governs the access  confined  processes  have  to  these  files.
171       SELinux  chronyd  policy is very flexible allowing users to setup their
172       chronyd processes in as secure a method as possible.
173
174       EQUIVALENCE DIRECTORIES
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176
177       chronyd policy stores data with multiple different file  context  types
178       under  the  /var/run/chrony  directory.  If you would like to store the
179       data in a different directory you can use the semanage command to  cre‐
180       ate an equivalence mapping.  If you wanted to store this data under the
181       /srv directory you would execute the following command:
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183       semanage fcontext -a -e /var/run/chrony /srv/chrony
184       restorecon -R -v /srv/chrony
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186       STANDARD FILE CONTEXT
187
188       SELinux defines the file context types for the chronyd, if  you  wanted
189       to store files with these types in a diffent paths, you need to execute
190       the semanage command  to  sepecify  alternate  labeling  and  then  use
191       restorecon to put the labels on disk.
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193       semanage fcontext -a -t chronyd_tmp_t '/srv/mychronyd_content(/.*)?'
194       restorecon -R -v /srv/mychronyd_content
195
196       Note:  SELinux  often  uses  regular expressions to specify labels that
197       match multiple files.
198
199       The following file types are defined for chronyd:
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203       chronyd_exec_t
204
205       - Set files with the chronyd_exec_t type, if you want to transition  an
206       executable to the chronyd_t domain.
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209       Paths:
210            /usr/sbin/chronyd, /usr/libexec/chrony-helper
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212
213       chronyd_initrc_exec_t
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215       - Set files with the chronyd_initrc_exec_t type, if you want to transi‐
216       tion an executable to the chronyd_initrc_t domain.
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220       chronyd_keys_t
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222       - Set files with the chronyd_keys_t type, if  you  want  to  treat  the
223       files as chronyd keys data.
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227       chronyd_tmp_t
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229       -  Set  files with the chronyd_tmp_t type, if you want to store chronyd
230       temporary files in the /tmp directories.
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234       chronyd_tmpfs_t
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236       - Set files with the chronyd_tmpfs_t type, if you want to store chronyd
237       files on a tmpfs file system.
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241       chronyd_unit_file_t
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243       - Set files with the chronyd_unit_file_t type, if you want to treat the
244       files as chronyd unit content.
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248       chronyd_var_lib_t
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250       - Set files with the chronyd_var_lib_t type, if you want to  store  the
251       chronyd files under the /var/lib directory.
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255       chronyd_var_log_t
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257       -  Set  files with the chronyd_var_log_t type, if you want to treat the
258       data as chronyd var log data, usually stored under the /var/log  direc‐
259       tory.
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263       chronyd_var_run_t
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265       -  Set  files with the chronyd_var_run_t type, if you want to store the
266       chronyd files under the /run or /var/run directory.
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268
269       Paths:
270            /var/run/chrony(/.*)?,  /var/run/chronyd(/.*)?,   /var/run/chrony-
271            helper(/.*)?, /var/run/chronyd.pid, /var/run/chronyd.sock
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273
274       Note:  File context can be temporarily modified with the chcon command.
275       If you want to permanently change the file context you need to use  the
276       semanage fcontext command.  This will modify the SELinux labeling data‐
277       base.  You will need to use restorecon to apply the labels.
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COMMANDS

281       semanage fcontext can also be used to manipulate default  file  context
282       mappings.
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284       semanage  permissive  can  also  be used to manipulate whether or not a
285       process type is permissive.
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287       semanage module can also be used to enable/disable/install/remove  pol‐
288       icy modules.
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290       semanage port can also be used to manipulate the port definitions
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292       semanage boolean can also be used to manipulate the booleans
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295       system-config-selinux is a GUI tool available to customize SELinux pol‐
296       icy settings.
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AUTHOR

300       This manual page was auto-generated using sepolicy manpage .
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