1nova_cert_selinux(8)       SELinux Policy nova_cert       nova_cert_selinux(8)
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NAME

6       nova_cert_selinux  -  Security  Enhanced Linux Policy for the nova_cert
7       processes
8

DESCRIPTION

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

24       The  nova_cert_t  SELinux  type  can  be  entered  via  the  file_type,
25       nova_cert_exec_t,     unlabeled_t,     proc_type,      filesystem_type,
26       mtrr_device_t, sysctl_type file types.
27
28       The default entrypoint paths for the nova_cert_t domain are the follow‐
29       ing:
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31       all files on the system, /usr/bin/nova-cert, /dev/cpu/mtrr
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PROCESS TYPES

34       SELinux defines process types (domains) for each process running on the
35       system
36
37       You can see the context of a process using the -Z option to ps
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39       Policy  governs  the  access confined processes have to files.  SELinux
40       nova_cert policy  is  very  flexible  allowing  users  to  setup  their
41       nova_cert processes in as secure a method as possible.
42
43       The following process types are defined for nova_cert:
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45       nova_cert_t
46
47       Note:  semanage  permissive  -a  nova_cert_t  can  be  used to make the
48       process type nova_cert_t permissive. SELinux does not  deny  access  to
49       permissive  process  types,  but the AVC (SELinux denials) messages are
50       still generated.
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52

BOOLEANS

54       SELinux  policy  is  customizable  based  on  least  access   required.
55       nova_cert  policy  is  extremely flexible and has several booleans that
56       allow you to manipulate the policy and run nova_cert with the  tightest
57       access possible.
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60
61       If you want to allow all daemons to write corefiles to /, you must turn
62       on the allow_daemons_dump_core boolean. Disabled by default.
63
64       setsebool -P allow_daemons_dump_core 1
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67
68       If you want to allow all daemons to use tcp wrappers, you must turn  on
69       the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
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71       setsebool -P allow_daemons_use_tcp_wrapper 1
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74
75       If  you  want to allow all daemons the ability to read/write terminals,
76       you  must  turn  on  the  allow_daemons_use_tty  boolean.  Disabled  by
77       default.
78
79       setsebool -P allow_daemons_use_tty 1
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83       If you want to allow all domains to use other domains file descriptors,
84       you must turn on the allow_domain_fd_use boolean. Enabled by default.
85
86       setsebool -P allow_domain_fd_use 1
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88
89
90       If you want to allow unconfined executables to make their  heap  memory
91       executable.   Doing  this  is  a  really bad idea. Probably indicates a
92       badly coded executable, but could indicate an attack.  This  executable
93       should  be  reported  in  bugzilla, you must turn on the allow_execheap
94       boolean. Disabled by default.
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96       setsebool -P allow_execheap 1
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100       If you want to allow unconfined executables to map a memory  region  as
101       both  executable  and  writable,  this  is dangerous and the executable
102       should be reported in bugzilla), you must  turn  on  the  allow_execmem
103       boolean. Enabled by default.
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105       setsebool -P allow_execmem 1
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107
108
109       If  you  want  to  allow  all  unconfined  executables to use libraries
110       requiring text relocation that are not  labeled  textrel_shlib_t),  you
111       must turn on the allow_execmod boolean. Enabled by default.
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113       setsebool -P allow_execmod 1
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117       If  you  want  to allow unconfined executables to make their stack exe‐
118       cutable.  This should never, ever be necessary.  Probably  indicates  a
119       badly  coded  executable, but could indicate an attack. This executable
120       should be reported in bugzilla), you must turn on  the  allow_execstack
121       boolean. Enabled by default.
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123       setsebool -P allow_execstack 1
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126
127       If  you want to allow sysadm to debug or ptrace all processes, you must
128       turn on the allow_ptrace boolean. Disabled by default.
129
130       setsebool -P allow_ptrace 1
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133
134       If you want to enable cluster mode for daemons, you must  turn  on  the
135       daemons_enable_cluster_mode boolean. Disabled by default.
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137       setsebool -P daemons_enable_cluster_mode 1
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140
141       If  you  want to allow all domains to have the kernel load modules, you
142       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
143       default.
144
145       setsebool -P domain_kernel_load_modules 1
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148
149       If you want to allow all domains to execute in fips_mode, you must turn
150       on the fips_mode boolean. Enabled by default.
151
152       setsebool -P fips_mode 1
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155
156       If you want to enable reading of urandom for all domains, you must turn
157       on the global_ssp boolean. Disabled by default.
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159       setsebool -P global_ssp 1
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162
163       If you want to enable support for upstart as the init program, you must
164       turn on the init_upstart boolean. Enabled by default.
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166       setsebool -P init_upstart 1
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169
170       If you want to allow certain domains to map low memory in  the  kernel,
171       you must turn on the mmap_low_allowed boolean. Disabled by default.
172
173       setsebool -P mmap_low_allowed 1
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176
177       If  you want to boolean to determine whether the system permits loading
178       policy, setting enforcing mode, and changing boolean values.  Set  this
179       to  true  and  you  have to reboot to set it back, you must turn on the
180       secure_mode_policyload boolean. Disabled by default.
181
182       setsebool -P secure_mode_policyload 1
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185
186       If you want to support X userspace object manager, you must turn on the
187       xserver_object_manager boolean. Disabled by default.
188
189       setsebool -P xserver_object_manager 1
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192

MANAGED FILES

194       The  SELinux process type nova_cert_t can manage files labeled with the
195       following file types.  The paths listed are the default paths for these
196       file types.  Note the processes UID still need to have DAC permissions.
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198       file_type
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200            all files on the system
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202

FILE CONTEXTS

204       SELinux requires files to have an extended attribute to define the file
205       type.
206
207       You can see the context of a file using the -Z option to ls
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209       Policy governs the access  confined  processes  have  to  these  files.
210       SELinux nova_cert policy is very flexible allowing users to setup their
211       nova_cert processes in as secure a method as possible.
212
213       STANDARD FILE CONTEXT
214
215       SELinux defines the file context types for the nova_cert, if you wanted
216       to store files with these types in a diffent paths, you need to execute
217       the semanage command  to  sepecify  alternate  labeling  and  then  use
218       restorecon to put the labels on disk.
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220       semanage   fcontext   -a   -t   nova_cert_tmp_t  '/srv/mynova_cert_con‐
221       tent(/.*)?'
222       restorecon -R -v /srv/mynova_cert_content
223
224       Note: SELinux often uses regular expressions  to  specify  labels  that
225       match multiple files.
226
227       The following file types are defined for nova_cert:
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231       nova_cert_exec_t
232
233       -  Set  files with the nova_cert_exec_t type, if you want to transition
234       an executable to the nova_cert_t domain.
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238       nova_cert_initrc_exec_t
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240       - Set files with the nova_cert_initrc_exec_t type, if you want to tran‐
241       sition an executable to the nova_cert_initrc_t domain.
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245       nova_cert_tmp_t
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247       -  Set  files  with the nova_cert_tmp_t type, if you want to store nova
248       cert temporary files in the /tmp directories.
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252       Note: File context can be temporarily modified with the chcon  command.
253       If  you want to permanently change the file context you need to use the
254       semanage fcontext command.  This will modify the SELinux labeling data‐
255       base.  You will need to use restorecon to apply the labels.
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COMMANDS

259       semanage  fcontext  can also be used to manipulate default file context
260       mappings.
261
262       semanage permissive can also be used to manipulate  whether  or  not  a
263       process type is permissive.
264
265       semanage  module can also be used to enable/disable/install/remove pol‐
266       icy modules.
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268       semanage boolean can also be used to manipulate the booleans
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270
271       system-config-selinux is a GUI tool available to customize SELinux pol‐
272       icy settings.
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AUTHOR

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

280       selinux(8), nova_cert(8), semanage(8), restorecon(8), chcon(1) , setse‐
281       bool(8)
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285nova_cert                          15-06-03               nova_cert_selinux(8)
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