1kdump_selinux(8)             SELinux Policy kdump             kdump_selinux(8)
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NAME

6       kdump_selinux - Security Enhanced Linux Policy for the kdump processes
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DESCRIPTION

9       Security-Enhanced Linux secures the kdump processes via flexible manda‐
10       tory access control.
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12       The kdump processes execute with the  kdump_t  SELinux  type.  You  can
13       check  if  you have these processes running by executing the ps command
14       with the -Z qualifier.
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16       For example:
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18       ps -eZ | grep kdump_t
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ENTRYPOINTS

23       The kdump_t SELinux type can be entered via the kdump_exec_t file type.
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25       The default entrypoint paths for the kdump_t domain are the following:
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27       /sbin/kdump, /sbin/kexec, /usr/sbin/kdump, /usr/sbin/kexec
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PROCESS TYPES

30       SELinux defines process types (domains) for each process running on the
31       system
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33       You can see the context of a process using the -Z option to ps
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35       Policy  governs  the  access confined processes have to files.  SELinux
36       kdump policy is very flexible allowing users to setup their kdump  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for kdump:
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41       kdump_t, kdumpctl_t, kdumpgui_t
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43       Note:  semanage  permissive  -a kdump_t can be used to make the process
44       type kdump_t permissive. SELinux does not  deny  access  to  permissive
45       process  types, but the AVC (SELinux denials) messages are still gener‐
46       ated.
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BOOLEANS

50       SELinux policy is customizable based on least access  required.   kdump
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run kdump with the tightest access possible.
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56       If you want to allow all domains to execute in fips_mode, you must turn
57       on the fips_mode boolean. Enabled by default.
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59       setsebool -P fips_mode 1
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MANAGED FILES

64       The SELinux process type kdump_t can manage files labeled with the fol‐
65       lowing file types.  The paths listed are the default  paths  for  these
66       file types.  Note the processes UID still need to have DAC permissions.
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68       kdump_crash_t
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70            /var/crash(/.*)?
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72       kdump_lock_t
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74            /var/lock/kdump(/.*)?
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76       kdump_var_lib_t
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78            /var/lib/kdump(/.*)?
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80       tmp_t
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82            /sandbox(/.*)?
83            /tmp
84            /usr/tmp
85            /var/tmp
86            /var/tmp
87            /tmp-inst
88            /var/tmp-inst
89            /var/tmp/tmp-inst
90            /var/tmp/vi.recover
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92

FILE CONTEXTS

94       SELinux requires files to have an extended attribute to define the file
95       type.
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97       You can see the context of a file using the -Z option to ls
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99       Policy governs the access  confined  processes  have  to  these  files.
100       SELinux  kdump  policy  is  very flexible allowing users to setup their
101       kdump processes in as secure a method as possible.
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103       STANDARD FILE CONTEXT
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105       SELinux defines the file context types for the kdump, if you wanted  to
106       store  files  with  these types in a diffent paths, you need to execute
107       the semanage command to sepecify alternate labeling and  then  use  re‐
108       storecon to put the labels on disk.
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110       semanage fcontext -a -t kdumpgui_tmp_t '/srv/mykdump_content(/.*)?'
111       restorecon -R -v /srv/mykdump_content
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113       Note:  SELinux  often  uses  regular expressions to specify labels that
114       match multiple files.
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116       The following file types are defined for kdump:
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120       kdump_crash_t
121
122       - Set files with the kdump_crash_t type, if you want to treat the files
123       as kdump crash data.
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127       kdump_etc_t
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129       - Set files with the kdump_etc_t type, if you want to store kdump files
130       in the /etc directories.
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134       kdump_exec_t
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136       - Set files with the kdump_exec_t type, if you want  to  transition  an
137       executable to the kdump_t domain.
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139
140       Paths:
141            /sbin/kdump, /sbin/kexec, /usr/sbin/kdump, /usr/sbin/kexec
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144       kdump_initrc_exec_t
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146       -  Set  files with the kdump_initrc_exec_t type, if you want to transi‐
147       tion an executable to the kdump_initrc_t domain.
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151       kdump_lock_t
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153       - Set files with the kdump_lock_t type, if you want to treat the  files
154       as kdump lock data, stored under the /var/lock directory
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158       kdump_unit_file_t
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160       -  Set  files with the kdump_unit_file_t type, if you want to treat the
161       files as kdump unit content.
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165       kdump_var_lib_t
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167       - Set files with the kdump_var_lib_t type, if you  want  to  store  the
168       kdump files under the /var/lib directory.
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172       kdumpctl_exec_t
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174       - Set files with the kdumpctl_exec_t type, if you want to transition an
175       executable to the kdumpctl_t domain.
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179       kdumpctl_tmp_t
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181       - Set files with the kdumpctl_tmp_t type, if you want to store kdumpctl
182       temporary files in the /tmp directories.
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186       kdumpgui_exec_t
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188       - Set files with the kdumpgui_exec_t type, if you want to transition an
189       executable to the kdumpgui_t domain.
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193       kdumpgui_tmp_t
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195       - Set files with the kdumpgui_tmp_t type, if you want to store kdumpgui
196       temporary files in the /tmp directories.
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200       Note:  File context can be temporarily modified with the chcon command.
201       If you want to permanently change the file context you need to use  the
202       semanage fcontext command.  This will modify the SELinux labeling data‐
203       base.  You will need to use restorecon to apply the labels.
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COMMANDS

207       semanage fcontext can also be used to manipulate default  file  context
208       mappings.
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210       semanage  permissive  can  also  be used to manipulate whether or not a
211       process type is permissive.
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213       semanage module can also be used to enable/disable/install/remove  pol‐
214       icy modules.
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216       semanage boolean can also be used to manipulate the booleans
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218
219       system-config-selinux is a GUI tool available to customize SELinux pol‐
220       icy settings.
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AUTHOR

224       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

228       selinux(8),  kdump(8),  semanage(8),  restorecon(8),  chcon(1),  sepol‐
229       icy(8), setsebool(8)
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233kdump                              21-06-09                   kdump_selinux(8)
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