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  dontaudit all daemons scheduling requests (setsched,
80       sys_nice), you must turn on the  daemons_dontaudit_scheduling  boolean.
81       Enabled by default.
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83       setsebool -P daemons_dontaudit_scheduling 1
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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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94       If you want to allow system to run with  NIS,  you  must  turn  on  the
95       nis_enabled boolean. Disabled by default.
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97       setsebool -P nis_enabled 1
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MANAGED FILES

102       The  SELinux process type exim_t can manage files labeled with the fol‐
103       lowing file types.  The paths listed are the default  paths  for  these
104       file types.  Note the processes UID still need to have DAC permissions.
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106       arpwatch_tmp_t
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108
109       cifs_t
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111
112       cluster_conf_t
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114            /etc/cluster(/.*)?
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116       cluster_var_lib_t
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118            /var/lib/pcsd(/.*)?
119            /var/lib/cluster(/.*)?
120            /var/lib/openais(/.*)?
121            /var/lib/pengine(/.*)?
122            /var/lib/corosync(/.*)?
123            /usr/lib/heartbeat(/.*)?
124            /var/lib/heartbeat(/.*)?
125            /var/lib/pacemaker(/.*)?
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127       cluster_var_run_t
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129            /var/run/crm(/.*)?
130            /var/run/cman_.*
131            /var/run/rsctmp(/.*)?
132            /var/run/aisexec.*
133            /var/run/heartbeat(/.*)?
134            /var/run/pcsd-ruby.socket
135            /var/run/corosync-qnetd(/.*)?
136            /var/run/corosync-qdevice(/.*)?
137            /var/run/corosync.pid
138            /var/run/cpglockd.pid
139            /var/run/rgmanager.pid
140            /var/run/cluster/rgmanager.sk
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142       dovecot_spool_t
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144            /var/spool/dovecot(/.*)?
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146       ecryptfs_t
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148            /home/[^/]+/.Private(/.*)?
149            /home/[^/]+/.ecryptfs(/.*)?
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151       exim_spool_t
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153            /var/spool/exim[0-9]?(/.*)?
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155       exim_tmp_t
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157
158       exim_var_lib_t
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160            /var/lib/exim[0-9]?(/.*)?
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162       exim_var_run_t
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164            /var/run/exim[0-9]?.pid
165            /var/run/exim[0-9]?(/.*)?
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167       faillog_t
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169            /var/log/btmp.*
170            /var/log/faillog.*
171            /var/log/tallylog.*
172            /var/run/faillock(/.*)?
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174       fusefs_t
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176            /var/run/user/[0-9]+/gvfs
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178       krb5_host_rcache_t
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180            /var/tmp/krb5_0.rcache2
181            /var/cache/krb5rcache(/.*)?
182            /var/tmp/nfs_0
183            /var/tmp/DNS_25
184            /var/tmp/host_0
185            /var/tmp/imap_0
186            /var/tmp/HTTP_23
187            /var/tmp/HTTP_48
188            /var/tmp/ldap_55
189            /var/tmp/ldap_487
190            /var/tmp/ldapmap1_0
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192       mail_home_rw_t
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194            /root/Maildir(/.*)?
195            /root/.esmtp_queue(/.*)?
196            /var/lib/arpwatch/.esmtp_queue(/.*)?
197            /var/cache/ddclient/.esmtp_queue(/.*)?
198            /home/[^/]+/.maildir(/.*)?
199            /home/[^/]+/Maildir(/.*)?
200            /home/[^/]+/.esmtp_queue(/.*)?
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202       mailman_data_t
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204            /etc/mailman.*
205            /var/lib/mailman(/.*)?
206            /var/spool/mailman.*
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208       nfs_t
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210
211       root_t
212
213            /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
214            /
215            /initrd
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217       sendmail_tmp_t
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219
220       user_home_t
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222            /home/[^/]+/.+
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FILE CONTEXTS

226       SELinux requires files to have an extended attribute to define the file
227       type.
228
229       You can see the context of a file using the -Z option to ls
230
231       Policy governs the access  confined  processes  have  to  these  files.
232       SELinux exim policy is very flexible allowing users to setup their exim
233       processes in as secure a method as possible.
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235       EQUIVALENCE DIRECTORIES
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237
238       exim policy stores data with multiple different file context types  un‐
239       der  the /var/run/exim[0-9]? directory.  If you would like to store the
240       data in a different directory you can use the semanage command to  cre‐
241       ate an equivalence mapping.  If you wanted to store this data under the
242       /srv directory you would execute the following command:
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244       semanage fcontext -a -e /var/run/exim[0-9]? /srv/exim[0-9]?
245       restorecon -R -v /srv/exim[0-9]?
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247       STANDARD FILE CONTEXT
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249       SELinux defines the file context types for the exim, if you  wanted  to
250       store  files with these types in a different paths, you need to execute
251       the semanage command to specify alternate labeling  and  then  use  re‐
252       storecon to put the labels on disk.
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254       semanage fcontext -a -t exim_exec_t '/srv/exim/content(/.*)?'
255       restorecon -R -v /srv/myexim_content
256
257       Note:  SELinux  often  uses  regular expressions to specify labels that
258       match multiple files.
259
260       The following file types are defined for exim:
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264       exim_exec_t
265
266       - Set files with the exim_exec_t type, if you want to transition an ex‐
267       ecutable to the exim_t domain.
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269
270       Paths:
271            /usr/sbin/exim[0-9]?, /usr/sbin/exim_tidydb
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273
274       exim_initrc_exec_t
275
276       - Set files with the exim_initrc_exec_t type, if you want to transition
277       an executable to the exim_initrc_t domain.
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281       exim_keytab_t
282
283       - Set files with the exim_keytab_t type, if you want to treat the files
284       as kerberos keytab files.
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288       exim_log_t
289
290       -  Set files with the exim_log_t type, if you want to treat the data as
291       exim log data, usually stored under the /var/log directory.
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295       exim_spool_t
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297       - Set files with the exim_spool_t type, if you want to store  the  exim
298       files under the /var/spool directory.
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302       exim_tmp_t
303
304       -  Set files with the exim_tmp_t type, if you want to store exim tempo‐
305       rary files in the /tmp directories.
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309       exim_var_lib_t
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311       - Set files with the exim_var_lib_t type, if you want to store the exim
312       files under the /var/lib directory.
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315
316       exim_var_run_t
317
318       - Set files with the exim_var_run_t type, if you want to store the exim
319       files under the /run or /var/run directory.
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321
322       Paths:
323            /var/run/exim[0-9]?.pid, /var/run/exim[0-9]?(/.*)?
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325
326       Note: File context can be temporarily modified with the chcon  command.
327       If  you want to permanently change the file context you need to use the
328       semanage fcontext command.  This will modify the SELinux labeling data‐
329       base.  You will need to use restorecon to apply the labels.
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331

COMMANDS

333       semanage  fcontext  can also be used to manipulate default file context
334       mappings.
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336       semanage permissive can also be used to manipulate  whether  or  not  a
337       process type is permissive.
338
339       semanage  module can also be used to enable/disable/install/remove pol‐
340       icy modules.
341
342       semanage boolean can also be used to manipulate the booleans
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344
345       system-config-selinux is a GUI tool available to customize SELinux pol‐
346       icy settings.
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AUTHOR

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