clvmd_selinux(8)

1clvmd_selinux(8)             SELinux Policy clvmd             clvmd_selinux(8)
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NAME

6       clvmd_selinux - Security Enhanced Linux Policy for the clvmd processes
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DESCRIPTION

9       Security-Enhanced Linux secures the clvmd processes via flexible manda‐
10       tory access control.
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12       The clvmd processes execute with the  clvmd_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 clvmd_t
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ENTRYPOINTS

23       The clvmd_t SELinux type can be entered via the clvmd_exec_t file type.
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25       The default entrypoint paths for the clvmd_t domain are the following:
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27       /usr/sbin/clvmd
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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       clvmd policy is very flexible allowing users to setup their clvmd  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for clvmd:
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41       clvmd_t
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43       Note:  semanage  permissive  -a clvmd_t can be used to make the process
44       type clvmd_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.   clvmd
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run clvmd with the tightest access possible.
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56       If you want to dontaudit all  daemons  scheduling  requests  (setsched,
57       sys_nice),  you  must turn on the daemons_dontaudit_scheduling boolean.
58       Enabled by default.
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60       setsebool -P daemons_dontaudit_scheduling 1
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64       If you want to deny user domains applications to map a memory region as
65       both  executable  and  writable,  this  is dangerous and the executable
66       should be reported in bugzilla, you must turn on the deny_execmem bool‐
67       ean. Disabled by default.
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69       setsebool -P deny_execmem 1
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73       If  you  want  to control the ability to mmap a low area of the address
74       space, as configured by /proc/sys/vm/mmap_min_addr, you  must  turn  on
75       the mmap_low_allowed boolean. Disabled by default.
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77       setsebool -P mmap_low_allowed 1
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81       If  you  want  to  allow  system  to run with NIS, you must turn on the
82       nis_enabled boolean. Disabled by default.
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84       setsebool -P nis_enabled 1
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88       If you want to disable kernel module loading, you must turn on the  se‐
89       cure_mode_insmod boolean. Disabled by default.
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91       setsebool -P secure_mode_insmod 1
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95       If  you  want to allow unconfined executables to make their heap memory
96       executable.  Doing this is a really  bad  idea.  Probably  indicates  a
97       badly  coded  executable, but could indicate an attack. This executable
98       should be reported in bugzilla, you must turn  on  the  selinuxuser_ex‐
99       echeap boolean. Disabled by default.
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101       setsebool -P selinuxuser_execheap 1
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105       If  you  want  to allow unconfined executables to make their stack exe‐
106       cutable.  This should never, ever be necessary.  Probably  indicates  a
107       badly  coded  executable, but could indicate an attack. This executable
108       should be reported in bugzilla, you must turn on the  selinuxuser_exec‐
109       stack boolean. Enabled by default.
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111       setsebool -P selinuxuser_execstack 1
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MANAGED FILES

116       The SELinux process type clvmd_t can manage files labeled with the fol‐
117       lowing file types.  The paths listed are the default  paths  for  these
118       file types.  Note the processes UID still need to have DAC permissions.
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120       file_type
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122            all files on the system
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FILE CONTEXTS

126       SELinux requires files to have an extended attribute to define the file
127       type.
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129       You can see the context of a file using the -Z option to ls
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131       Policy governs the access  confined  processes  have  to  these  files.
132       SELinux  clvmd  policy  is  very flexible allowing users to setup their
133       clvmd processes in as secure a method as possible.
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135       STANDARD FILE CONTEXT
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137       SELinux defines the file context types for the clvmd, if you wanted  to
138       store  files with these types in a different paths, you need to execute
139       the semanage command to specify alternate labeling  and  then  use  re‐
140       storecon to put the labels on disk.
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142       semanage fcontext -a -t clvmd_exec_t '/srv/clvmd/content(/.*)?'
143       restorecon -R -v /srv/myclvmd_content
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145       Note:  SELinux  often  uses  regular expressions to specify labels that
146       match multiple files.
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148       The following file types are defined for clvmd:
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152       clvmd_exec_t
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154       - Set files with the clvmd_exec_t type, if you want  to  transition  an
155       executable to the clvmd_t domain.
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159       clvmd_initrc_exec_t
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161       -  Set  files with the clvmd_initrc_exec_t type, if you want to transi‐
162       tion an executable to the clvmd_initrc_t domain.
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166       clvmd_tmpfs_t
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168       - Set files with the clvmd_tmpfs_t type, if you  want  to  store  clvmd
169       files on a tmpfs file system.
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173       clvmd_var_run_t
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175       -  Set  files  with  the clvmd_var_run_t type, if you want to store the
176       clvmd files under the /run or /var/run 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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COMMANDS

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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AUTHOR

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