1checkpc_selinux(8) SELinux Policy checkpc checkpc_selinux(8)
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6 checkpc_selinux - Security Enhanced Linux Policy for the checkpc pro‐
7 cesses
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10 Security-Enhanced Linux secures the checkpc processes via flexible
11 mandatory access control.
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13 The checkpc processes execute with the checkpc_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 checkpc_t
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24 The checkpc_t SELinux type can be entered via the checkpc_exec_t file
25 type.
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27 The default entrypoint paths for the checkpc_t domain are the follow‐
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30 /usr/sbin/checkpc
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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 checkpc policy is very flexible allowing users to setup their checkpc
40 processes in as secure a method as possible.
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42 The following process types are defined for checkpc:
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44 checkpc_t
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46 Note: semanage permissive -a checkpc_t can be used to make the process
47 type checkpc_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. checkpc
54 policy is extremely flexible and has several booleans that allow you to
55 manipulate the policy and run checkpc with the tightest access possi‐
56 ble.
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60 If you want to allow all daemons the ability to read/write terminals,
61 you must turn on the daemons_use_tty boolean. Disabled by default.
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63 setsebool -P daemons_use_tty 1
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67 If you want to deny any process from ptracing or debugging any other
68 processes, you must turn on the deny_ptrace boolean. Enabled by
69 default.
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71 setsebool -P deny_ptrace 1
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75 If you want to allow any process to mmap any file on system with
76 attribute file_type, you must turn on the domain_can_mmap_files bool‐
77 ean. Enabled by default.
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79 setsebool -P domain_can_mmap_files 1
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83 If you want to allow all domains write to kmsg_device, while kernel is
84 executed with systemd.log_target=kmsg parameter, you must turn on the
85 domain_can_write_kmsg boolean. Disabled by default.
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87 setsebool -P domain_can_write_kmsg 1
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91 If you want to allow all domains to use other domains file descriptors,
92 you must turn on the domain_fd_use boolean. Enabled by default.
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94 setsebool -P domain_fd_use 1
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98 If you want to allow all domains to have the kernel load modules, you
99 must turn on the domain_kernel_load_modules boolean. Disabled by
100 default.
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102 setsebool -P domain_kernel_load_modules 1
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106 If you want to allow all domains to execute in fips_mode, you must turn
107 on the fips_mode boolean. Enabled by default.
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109 setsebool -P fips_mode 1
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113 If you want to enable reading of urandom for all domains, you must turn
114 on the global_ssp boolean. Disabled by default.
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116 setsebool -P global_ssp 1
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120 If you want to allow system to run with NIS, you must turn on the
121 nis_enabled boolean. Disabled by default.
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123 setsebool -P nis_enabled 1
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128 The SELinux process type checkpc_t can manage files labeled with the
129 following file types. The paths listed are the default paths for these
130 file types. Note the processes UID still need to have DAC permissions.
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132 print_spool_t
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134 /var/spool/lpd(/.*)?
135 /var/spool/cups(/.*)?
136 /var/spool/cups-pdf(/.*)?
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140 SELinux requires files to have an extended attribute to define the file
141 type.
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143 You can see the context of a file using the -Z option to ls
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145 Policy governs the access confined processes have to these files.
146 SELinux checkpc policy is very flexible allowing users to setup their
147 checkpc processes in as secure a method as possible.
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149 STANDARD FILE CONTEXT
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151 SELinux defines the file context types for the checkpc, if you wanted
152 to store files with these types in a diffent paths, you need to execute
153 the semanage command to sepecify alternate labeling and then use
154 restorecon to put the labels on disk.
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156 semanage fcontext -a -t checkpc_log_t '/srv/mycheckpc_content(/.*)?'
157 restorecon -R -v /srv/mycheckpc_content
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159 Note: SELinux often uses regular expressions to specify labels that
160 match multiple files.
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162 The following file types are defined for checkpc:
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166 checkpc_exec_t
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168 - Set files with the checkpc_exec_t type, if you want to transition an
169 executable to the checkpc_t domain.
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173 checkpc_log_t
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175 - Set files with the checkpc_log_t type, if you want to treat the data
176 as checkpc log data, usually stored under the /var/log directory.
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180 Note: File context can be temporarily modified with the chcon command.
181 If you want to permanently change the file context you need to use the
182 semanage fcontext command. This will modify the SELinux labeling data‐
183 base. You will need to use restorecon to apply the labels.
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187 semanage fcontext can also be used to manipulate default file context
188 mappings.
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190 semanage permissive can also be used to manipulate whether or not a
191 process type is permissive.
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193 semanage module can also be used to enable/disable/install/remove pol‐
194 icy modules.
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196 semanage boolean can also be used to manipulate the booleans
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199 system-config-selinux is a GUI tool available to customize SELinux pol‐
200 icy settings.
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204 This manual page was auto-generated using sepolicy manpage .
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208 selinux(8), checkpc(8), semanage(8), restorecon(8), chcon(1), sepol‐
209 icy(8) , setsebool(8)
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213checkpc 19-04-25 checkpc_selinux(8)