1chronyc_selinux(8) SELinux Policy chronyc chronyc_selinux(8)
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6 chronyc_selinux - Security Enhanced Linux Policy for the chronyc pro‐
7 cesses
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10 Security-Enhanced Linux secures the chronyc processes via flexible
11 mandatory access control.
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13 The chronyc processes execute with the chronyc_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 chronyc_t
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24 The chronyc_t SELinux type can be entered via the chronyc_exec_t file
25 type.
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27 The default entrypoint paths for the chronyc_t domain are the follow‐
28 ing:
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30 /usr/bin/chronyc
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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 chronyc policy is very flexible allowing users to setup their chronyc
40 processes in as secure a method as possible.
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42 The following process types are defined for chronyc:
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44 chronyc_t
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46 Note: semanage permissive -a chronyc_t can be used to make the process
47 type chronyc_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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53 SELinux policy is customizable based on least access required. chronyc
54 policy is extremely flexible and has several booleans that allow you to
55 manipulate the policy and run chronyc 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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68 The SELinux process type chronyc_t can manage files labeled with the
69 following file types. The paths listed are the default paths for these
70 file types. Note the processes UID still need to have DAC permissions.
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72 chronyd_keys_t
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74 /etc/chrony.keys.*
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76 chronyd_tmp_t
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79 chronyd_tmpfs_t
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82 chronyd_var_lib_t
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84 /var/lib/chrony(/.*)?
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86 chronyd_var_log_t
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88 /var/log/chrony(/.*)?
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90 chronyd_var_run_t
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92 /var/run/chrony(/.*)?
93 /var/run/chronyd(/.*)?
94 /var/run/chrony-helper(/.*)?
95 /var/run/chronyd.pid
96 /var/run/chronyd.sock
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98 non_security_file_type
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103 SELinux requires files to have an extended attribute to define the file
104 type.
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106 You can see the context of a file using the -Z option to ls
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108 Policy governs the access confined processes have to these files.
109 SELinux chronyc policy is very flexible allowing users to setup their
110 chronyc processes in as secure a method as possible.
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112 The following file types are defined for chronyc:
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116 chronyc_exec_t
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118 - Set files with the chronyc_exec_t type, if you want to transition an
119 executable to the chronyc_t domain.
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123 Note: File context can be temporarily modified with the chcon command.
124 If you want to permanently change the file context you need to use the
125 semanage fcontext command. This will modify the SELinux labeling data‐
126 base. You will need to use restorecon to apply the labels.
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130 semanage fcontext can also be used to manipulate default file context
131 mappings.
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133 semanage permissive can also be used to manipulate whether or not a
134 process type is permissive.
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136 semanage module can also be used to enable/disable/install/remove pol‐
137 icy modules.
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139 semanage boolean can also be used to manipulate the booleans
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142 system-config-selinux is a GUI tool available to customize SELinux pol‐
143 icy settings.
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147 This manual page was auto-generated using sepolicy manpage .
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151 selinux(8), chronyc(8), semanage(8), restorecon(8), chcon(1), sepol‐
152 icy(8), setsebool(8)
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156chronyc 19-12-02 chronyc_selinux(8)