shutdown_selinux(8)

1shutdown_selinux(8)         SELinux Policy shutdown        shutdown_selinux(8)
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NAME

6       shutdown_selinux - Security Enhanced Linux Policy for the shutdown pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux secures the  shutdown  processes  via  flexible
11       mandatory access control.
12
13       The  shutdown  processes  execute with the shutdown_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 shutdown_t
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ENTRYPOINTS

24       The shutdown_t SELinux type can be entered via the shutdown_exec_t file
25       type.
26
27       The default entrypoint paths for the shutdown_t domain are the  follow‐
28       ing:
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30       /sbin/shutdown,        /usr/sbin/shutdown,       /lib/upstart/shutdown,
31       /usr/lib/upstart/shutdown
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PROCESS TYPES

34       SELinux defines process types (domains) for each process running on the
35       system
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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       shutdown policy is very flexible allowing users to setup their shutdown
41       processes in as secure a method as possible.
42
43       The following process types are defined for shutdown:
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45       shutdown_t
46
47       Note: semanage permissive -a shutdown_t can be used to make the process
48       type shutdown_t permissive. SELinux does not deny access to  permissive
49       process  types, but the AVC (SELinux denials) messages are still gener‐
50       ated.
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52

BOOLEANS

54       SELinux policy is customizable based on least access  required.   shut‐
55       down  policy  is extremely flexible and has several booleans that allow
56       you to manipulate the policy and run shutdown with the tightest  access
57       possible.
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61       If you want to allow all domains to use other domains file descriptors,
62       you must turn on the allow_domain_fd_use boolean. Enabled by default.
63
64       setsebool -P allow_domain_fd_use 1
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68       If you want to allow confined applications to run  with  kerberos,  you
69       must turn on the allow_kerberos boolean. Enabled by default.
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71       setsebool -P allow_kerberos 1
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75       If  you want to allow sysadm to debug or ptrace all processes, you must
76       turn on the allow_ptrace boolean. Disabled by default.
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78       setsebool -P allow_ptrace 1
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82       If you want to allow system to run with  NIS,  you  must  turn  on  the
83       allow_ypbind boolean. Disabled by default.
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85       setsebool -P allow_ypbind 1
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89       If  you  want to allow all domains to have the kernel load modules, you
90       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
91       default.
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93       setsebool -P domain_kernel_load_modules 1
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97       If you want to allow all domains to execute in fips_mode, you must turn
98       on the fips_mode boolean. Enabled by default.
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100       setsebool -P fips_mode 1
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104       If you want to enable reading of urandom for all domains, you must turn
105       on the global_ssp boolean. Disabled by default.
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107       setsebool -P global_ssp 1
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111       If you want to enable support for upstart as the init program, you must
112       turn on the init_upstart boolean. Enabled by default.
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114       setsebool -P init_upstart 1
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117
118       If you want to allow confined applications to use nscd  shared  memory,
119       you must turn on the nscd_use_shm boolean. Enabled by default.
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121       setsebool -P nscd_use_shm 1
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124
125       If  you  want  to  support  NFS  home directories, you must turn on the
126       use_nfs_home_dirs boolean. Disabled by default.
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128       setsebool -P use_nfs_home_dirs 1
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131
132       If you want to support SAMBA home directories, you  must  turn  on  the
133       use_samba_home_dirs boolean. Disabled by default.
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135       setsebool -P use_samba_home_dirs 1
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MANAGED FILES

140       The  SELinux  process type shutdown_t can manage files labeled with the
141       following file types.  The paths listed are the default paths for these
142       file types.  Note the processes UID still need to have DAC permissions.
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144       initrc_tmp_t
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147       initrc_var_run_t
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149            /var/run/utmp
150            /var/run/random-seed
151            /var/run/runlevel.dir
152            /var/run/setmixer_flag
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154       mnt_t
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156            /mnt(/[^/]*)
157            /mnt(/[^/]*)?
158            /rhev(/[^/]*)?
159            /media(/[^/]*)
160            /media(/[^/]*)?
161            /etc/rhgb(/.*)?
162            /media/.hal-.*
163            /net
164            /afs
165            /rhev
166            /misc
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168       shutdown_etc_t
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170            /etc/nologin
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172       shutdown_var_run_t
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174            /var/run/shutdown.pid
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176       tmp_t
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178            /tmp
179            /usr/tmp
180            /var/tmp
181            /tmp-inst
182            /var/tmp-inst
183            /var/tmp/vi.recover
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185       wtmp_t
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187            /var/log/wtmp.*
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FILE CONTEXTS

191       SELinux requires files to have an extended attribute to define the file
192       type.
193
194       You can see the context of a file using the -Z option to ls
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196       Policy governs the access  confined  processes  have  to  these  files.
197       SELinux  shutdown policy is very flexible allowing users to setup their
198       shutdown processes in as secure a method as possible.
199
200       STANDARD FILE CONTEXT
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202       SELinux defines the file context types for the shutdown, if you  wanted
203       to store files with these types in a diffent paths, you need to execute
204       the semanage command  to  sepecify  alternate  labeling  and  then  use
205       restorecon to put the labels on disk.
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207       semanage   fcontext   -a  -t  shutdown_var_run_t  '/srv/myshutdown_con‐
208       tent(/.*)?'
209       restorecon -R -v /srv/myshutdown_content
210
211       Note: SELinux often uses regular expressions  to  specify  labels  that
212       match multiple files.
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214       The following file types are defined for shutdown:
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218       shutdown_etc_t
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220       - Set files with the shutdown_etc_t type, if you want to store shutdown
221       files in the /etc directories.
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225       shutdown_exec_t
226
227       - Set files with the shutdown_exec_t type, if you want to transition an
228       executable to the shutdown_t domain.
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230
231       Paths:
232            /sbin/shutdown,     /usr/sbin/shutdown,     /lib/upstart/shutdown,
233            /usr/lib/upstart/shutdown
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236       shutdown_var_run_t
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238       - Set files with the shutdown_var_run_t type, if you want to store  the
239       shutdown files under the /run or /var/run directory.
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243       Note:  File context can be temporarily modified with the chcon command.
244       If you want to permanently change the file context you need to use  the
245       semanage fcontext command.  This will modify the SELinux labeling data‐
246       base.  You will need to use restorecon to apply the labels.
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COMMANDS

250       semanage fcontext can also be used to manipulate default  file  context
251       mappings.
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253       semanage  permissive  can  also  be used to manipulate whether or not a
254       process type is permissive.
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256       semanage module can also be used to enable/disable/install/remove  pol‐
257       icy modules.
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259       semanage boolean can also be used to manipulate the booleans
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261
262       system-config-selinux is a GUI tool available to customize SELinux pol‐
263       icy settings.
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AUTHOR

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