exim_selinux(8)

1exim_selinux(8)               SELinux Policy exim              exim_selinux(8)
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NAME

6       exim_selinux - Security Enhanced Linux Policy for the exim processes
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DESCRIPTION

9       Security-Enhanced  Linux secures the exim processes via flexible manda‐
10       tory access control.
11
12       The exim processes execute with the exim_t SELinux type. You can  check
13       if  you  have  these processes running by executing the ps command with
14       the -Z qualifier.
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16       For example:
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18       ps -eZ | grep exim_t
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20
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ENTRYPOINTS

23       The exim_t SELinux type can be entered via the exim_exec_t file type.
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25       The default entrypoint paths for the exim_t domain are the following:
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27       /usr/sbin/exim[0-9]?, /usr/sbin/exim_tidydb
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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       exim policy is very flexible allowing users to setup  their  exim  pro‐
37       cesses in as secure a method as possible.
38
39       The following process types are defined for exim:
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41       exim_t
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43       Note:  semanage  permissive  -a  exim_t can be used to make the process
44       type exim_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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48

BOOLEANS

50       SELinux policy is customizable based on least  access  required.   exim
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run exim with the tightest access possible.
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56       If you want to determine whether exim can  connect  to  databases,  you
57       must turn on the exim_can_connect_db boolean. Disabled by default.
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59       setsebool -P exim_can_connect_db 1
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63       If  you  want  to  determine  whether exim can create, read, write, and
64       delete generic user content files,  you  must  turn  on  the  exim_man‐
65       age_user_files boolean. Disabled by default.
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67       setsebool -P exim_manage_user_files 1
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71       If  you  want  to  determine whether exim can read generic user content
72       files, you must turn on the exim_read_user_files boolean.  Disabled  by
73       default.
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75       setsebool -P exim_read_user_files 1
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78
79       If you want to allow users to resolve user passwd entries directly from
80       ldap rather then using a sssd server, you  must  turn  on  the  authlo‐
81       gin_nsswitch_use_ldap boolean. Disabled by default.
82
83       setsebool -P authlogin_nsswitch_use_ldap 1
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86
87       If you want to allow all domains to execute in fips_mode, you must turn
88       on the fips_mode boolean. Enabled by default.
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90       setsebool -P fips_mode 1
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93
94       If you want to allow confined applications to run  with  kerberos,  you
95       must turn on the kerberos_enabled boolean. Enabled by default.
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97       setsebool -P kerberos_enabled 1
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101       If  you  want  to  allow  system  to run with NIS, you must turn on the
102       nis_enabled boolean. Disabled by default.
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104       setsebool -P nis_enabled 1
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107
108       If you want to allow confined applications to use nscd  shared  memory,
109       you must turn on the nscd_use_shm boolean. Disabled by default.
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111       setsebool -P nscd_use_shm 1
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MANAGED FILES

116       The  SELinux process type exim_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.
119
120       arpwatch_tmp_t
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122
123       cifs_t
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125
126       cluster_conf_t
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128            /etc/cluster(/.*)?
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130       cluster_var_lib_t
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132            /var/lib/pcsd(/.*)?
133            /var/lib/cluster(/.*)?
134            /var/lib/openais(/.*)?
135            /var/lib/pengine(/.*)?
136            /var/lib/corosync(/.*)?
137            /usr/lib/heartbeat(/.*)?
138            /var/lib/heartbeat(/.*)?
139            /var/lib/pacemaker(/.*)?
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141       cluster_var_run_t
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143            /var/run/crm(/.*)?
144            /var/run/cman_.*
145            /var/run/rsctmp(/.*)?
146            /var/run/aisexec.*
147            /var/run/heartbeat(/.*)?
148            /var/run/corosync-qnetd(/.*)?
149            /var/run/corosync-qdevice(/.*)?
150            /var/run/corosync.pid
151            /var/run/cpglockd.pid
152            /var/run/rgmanager.pid
153            /var/run/cluster/rgmanager.sk
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155       dovecot_spool_t
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157            /var/spool/dovecot(/.*)?
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159       ecryptfs_t
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161            /home/[^/]+/.Private(/.*)?
162            /home/[^/]+/.ecryptfs(/.*)?
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164       exim_spool_t
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166            /var/spool/exim[0-9]?(/.*)?
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168       exim_tmp_t
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171       exim_var_lib_t
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173            /var/lib/exim[0-9]?(/.*)?
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175       exim_var_run_t
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177            /var/run/exim[0-9]?.pid
178            /var/run/exim[0-9]?(/.*)?
179
180       faillog_t
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182            /var/log/btmp.*
183            /var/log/faillog.*
184            /var/log/tallylog.*
185            /var/run/faillock(/.*)?
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187       fusefs_t
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189            /var/run/user/[^/]*/gvfs
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191       mail_home_rw_t
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193            /root/Maildir(/.*)?
194            /root/.esmtp_queue(/.*)?
195            /var/lib/arpwatch/.esmtp_queue(/.*)?
196            /home/[^/]+/.maildir(/.*)?
197            /home/[^/]+/Maildir(/.*)?
198            /home/[^/]+/.esmtp_queue(/.*)?
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200       mail_spool_t
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202            /var/mail(/.*)?
203            /var/spool/imap(/.*)?
204            /var/spool/mail(/.*)?
205            /var/spool/smtpd(/.*)?
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207       mailman_data_t
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209            /etc/mailman.*
210            /var/lib/mailman(/.*)?
211            /var/spool/mailman.*
212
213       nfs_t
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215
216       root_t
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218            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
219            /
220            /initrd
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222       sendmail_tmp_t
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224
225       user_home_t
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227            /home/[^/]+/.+
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229       user_tmp_t
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231            /dev/shm/mono.*
232            /var/run/user(/.*)?
233            /tmp/.ICE-unix(/.*)?
234            /tmp/.X11-unix(/.*)?
235            /dev/shm/pulse-shm.*
236            /tmp/.X0-lock
237            /tmp/hsperfdata_root
238            /var/tmp/hsperfdata_root
239            /home/[^/]+/tmp
240            /home/[^/]+/.tmp
241            /tmp/gconfd-[^/]+
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FILE CONTEXTS

245       SELinux requires files to have an extended attribute to define the file
246       type.
247
248       You can see the context of a file using the -Z option to ls
249
250       Policy governs the access  confined  processes  have  to  these  files.
251       SELinux exim policy is very flexible allowing users to setup their exim
252       processes in as secure a method as possible.
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254       EQUIVALENCE DIRECTORIES
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256
257       exim policy stores data with  multiple  different  file  context  types
258       under  the  /var/run/exim[0-9]?  directory.  If you would like to store
259       the data in a different directory you can use the semanage  command  to
260       create  an equivalence mapping.  If you wanted to store this data under
261       the /srv dirctory you would execute the following command:
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263       semanage fcontext -a -e /var/run/exim[0-9]? /srv/exim[0-9]?
264       restorecon -R -v /srv/exim[0-9]?
265
266       STANDARD FILE CONTEXT
267
268       SELinux defines the file context types for the exim, if you  wanted  to
269       store  files  with  these types in a diffent paths, you need to execute
270       the semanage command  to  sepecify  alternate  labeling  and  then  use
271       restorecon to put the labels on disk.
272
273       semanage fcontext -a -t exim_var_run_t '/srv/myexim_content(/.*)?'
274       restorecon -R -v /srv/myexim_content
275
276       Note:  SELinux  often  uses  regular expressions to specify labels that
277       match multiple files.
278
279       The following file types are defined for exim:
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283       exim_exec_t
284
285       - Set files with the exim_exec_t type, if you  want  to  transition  an
286       executable to the exim_t domain.
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288
289       Paths:
290            /usr/sbin/exim[0-9]?, /usr/sbin/exim_tidydb
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292
293       exim_initrc_exec_t
294
295       - Set files with the exim_initrc_exec_t type, if you want to transition
296       an executable to the exim_initrc_t domain.
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300       exim_keytab_t
301
302       - Set files with the exim_keytab_t type, if you want to treat the files
303       as kerberos keytab files.
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307       exim_log_t
308
309       -  Set files with the exim_log_t type, if you want to treat the data as
310       exim log data, usually stored under the /var/log directory.
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312
313
314       exim_spool_t
315
316       - Set files with the exim_spool_t type, if you want to store  the  exim
317       files under the /var/spool directory.
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321       exim_tmp_t
322
323       -  Set files with the exim_tmp_t type, if you want to store exim tempo‐
324       rary files in the /tmp directories.
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327
328       exim_var_lib_t
329
330       - Set files with the exim_var_lib_t type, if you want to store the exim
331       files under the /var/lib directory.
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334
335       exim_var_run_t
336
337       - Set files with the exim_var_run_t type, if you want to store the exim
338       files under the /run or /var/run directory.
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340
341       Paths:
342            /var/run/exim[0-9]?.pid, /var/run/exim[0-9]?(/.*)?
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344
345       Note: File context can be temporarily modified with the chcon  command.
346       If  you want to permanently change the file context you need to use the
347       semanage fcontext command.  This will modify the SELinux labeling data‐
348       base.  You will need to use restorecon to apply the labels.
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350

COMMANDS

352       semanage  fcontext  can also be used to manipulate default file context
353       mappings.
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355       semanage permissive can also be used to manipulate  whether  or  not  a
356       process type is permissive.
357
358       semanage  module can also be used to enable/disable/install/remove pol‐
359       icy modules.
360
361       semanage boolean can also be used to manipulate the booleans
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363
364       system-config-selinux is a GUI tool available to customize SELinux pol‐
365       icy settings.
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367

AUTHOR

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