1exim_selinux(8) SELinux Policy exim exim_selinux(8)
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6 exim_selinux - Security Enhanced Linux Policy for the exim processes
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9 Security-Enhanced Linux secures the exim processes via flexible manda‐
10 tory access control.
11 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.
15 For example:
17 ps -eZ | grep exim_t
19
23 The exim_t SELinux type can be entered via the exim_exec_t file type.
24 The default entrypoint paths for the exim_t domain are the following:
26 /usr/sbin/exim[0-9]?, /usr/sbin/exim_tidydb
28
30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 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 The following process types are defined for exim:
40 exim_t
42 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.
47
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.
53 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.
58 setsebool -P exim_can_connect_db 1
60 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.
66 setsebool -P exim_manage_user_files 1
68 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.
74 setsebool -P exim_read_user_files 1
76 If you want to allow all domains to execute in fips_mode, you must turn
80 on the fips_mode boolean. Enabled by default.
81 setsebool -P fips_mode 1
83
87 The SELinux process type exim_t can manage files labeled with the fol‐
88 lowing file types. The paths listed are the default paths for these
89 file types. Note the processes UID still need to have DAC permissions.
90 arpwatch_tmp_t
92 cifs_t
95 cluster_conf_t
98 /etc/cluster(/.*)?
100 cluster_var_lib_t
102 /var/lib/pcsd(/.*)?
104 /var/lib/cluster(/.*)?
105 /var/lib/openais(/.*)?
106 /var/lib/pengine(/.*)?
107 /var/lib/corosync(/.*)?
108 /usr/lib/heartbeat(/.*)?
109 /var/lib/heartbeat(/.*)?
110 /var/lib/pacemaker(/.*)?
111 cluster_var_run_t
113 /var/run/crm(/.*)?
115 /var/run/cman_.*
116 /var/run/rsctmp(/.*)?
117 /var/run/aisexec.*
118 /var/run/heartbeat(/.*)?
119 /var/run/pcsd-ruby.socket
120 /var/run/corosync-qnetd(/.*)?
121 /var/run/corosync-qdevice(/.*)?
122 /var/run/corosync.pid
123 /var/run/cpglockd.pid
124 /var/run/rgmanager.pid
125 /var/run/cluster/rgmanager.sk
126 dovecot_spool_t
128 /var/spool/dovecot(/.*)?
130 ecryptfs_t
132 /home/[^/]+/.Private(/.*)?
134 /home/[^/]+/.ecryptfs(/.*)?
135 exim_spool_t
137 /var/spool/exim[0-9]?(/.*)?
139 exim_tmp_t
141 exim_var_lib_t
144 /var/lib/exim[0-9]?(/.*)?
146 exim_var_run_t
148 /var/run/exim[0-9]?.pid
150 /var/run/exim[0-9]?(/.*)?
151 faillog_t
153 /var/log/btmp.*
155 /var/log/faillog.*
156 /var/log/tallylog.*
157 /var/run/faillock(/.*)?
158 fusefs_t
160 /var/run/user/[0-9]+/gvfs
162 krb5_host_rcache_t
164 /var/tmp/krb5_0.rcache2
166 /var/cache/krb5rcache(/.*)?
167 /var/tmp/nfs_0
168 /var/tmp/DNS_25
169 /var/tmp/host_0
170 /var/tmp/imap_0
171 /var/tmp/HTTP_23
172 /var/tmp/HTTP_48
173 /var/tmp/ldap_55
174 /var/tmp/ldap_487
175 /var/tmp/ldapmap1_0
176 mail_home_rw_t
178 /root/Maildir(/.*)?
180 /root/.esmtp_queue(/.*)?
181 /var/lib/arpwatch/.esmtp_queue(/.*)?
182 /home/[^/]+/.maildir(/.*)?
183 /home/[^/]+/Maildir(/.*)?
184 /home/[^/]+/.esmtp_queue(/.*)?
185 mailman_data_t
187 /etc/mailman.*
189 /var/lib/mailman(/.*)?
190 /var/spool/mailman.*
191 nfs_t
193 root_t
196 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
198 /
199 /initrd
200 sendmail_tmp_t
202 user_home_t
205 /home/[^/]+/.+
207
210 SELinux requires files to have an extended attribute to define the file
211 type.
212 You can see the context of a file using the -Z option to ls
214 Policy governs the access confined processes have to these files.
216 SELinux exim policy is very flexible allowing users to setup their exim
217 processes in as secure a method as possible.
218 EQUIVALENCE DIRECTORIES
220 exim policy stores data with multiple different file context types un‐
223 der the /var/run/exim[0-9]? directory. If you would like to store the
224 data in a different directory you can use the semanage command to cre‐
225 ate an equivalence mapping. If you wanted to store this data under the
226 /srv directory you would execute the following command:
227 semanage fcontext -a -e /var/run/exim[0-9]? /srv/exim[0-9]?
229 restorecon -R -v /srv/exim[0-9]?
230 STANDARD FILE CONTEXT
232 SELinux defines the file context types for the exim, if you wanted to
234 store files with these types in a diffent paths, you need to execute
235 the semanage command to specify alternate labeling and then use re‐
236 storecon to put the labels on disk.
237 semanage fcontext -a -t exim_var_run_t '/srv/myexim_content(/.*)?'
239 restorecon -R -v /srv/myexim_content
240 Note: SELinux often uses regular expressions to specify labels that
242 match multiple files.
243 The following file types are defined for exim:
245 exim_exec_t
249 - Set files with the exim_exec_t type, if you want to transition an ex‐
251 ecutable to the exim_t domain.
252 Paths:
255 /usr/sbin/exim[0-9]?, /usr/sbin/exim_tidydb
256 exim_initrc_exec_t
259 - Set files with the exim_initrc_exec_t type, if you want to transition
261 an executable to the exim_initrc_t domain.
262 exim_keytab_t
266 - Set files with the exim_keytab_t type, if you want to treat the files
268 as kerberos keytab files.
269 exim_log_t
273 - Set files with the exim_log_t type, if you want to treat the data as
275 exim log data, usually stored under the /var/log directory.
276 exim_spool_t
280 - Set files with the exim_spool_t type, if you want to store the exim
282 files under the /var/spool directory.
283 exim_tmp_t
287 - Set files with the exim_tmp_t type, if you want to store exim tempo‐
289 rary files in the /tmp directories.
290 exim_var_lib_t
294 - Set files with the exim_var_lib_t type, if you want to store the exim
296 files under the /var/lib directory.
297 exim_var_run_t
301 - Set files with the exim_var_run_t type, if you want to store the exim
303 files under the /run or /var/run directory.
304 Paths:
307 /var/run/exim[0-9]?.pid, /var/run/exim[0-9]?(/.*)?
308 Note: File context can be temporarily modified with the chcon command.
311 If you want to permanently change the file context you need to use the
312 semanage fcontext command. This will modify the SELinux labeling data‐
313 base. You will need to use restorecon to apply the labels.
314
317 semanage fcontext can also be used to manipulate default file context
318 mappings.
319 semanage permissive can also be used to manipulate whether or not a
321 process type is permissive.
322 semanage module can also be used to enable/disable/install/remove pol‐
324 icy modules.
325 semanage boolean can also be used to manipulate the booleans
327 system-config-selinux is a GUI tool available to customize SELinux pol‐
330 icy settings.
331
334 This manual page was auto-generated using sepolicy manpage .
335
338 selinux(8), exim(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
339 setsebool(8)
340exim 23-02-03 exim_selinux(8)