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 cifs_t
92 cluster_conf_t
95 /etc/cluster(/.*)?
97 cluster_var_lib_t
99 /var/lib/pcsd(/.*)?
101 /var/lib/cluster(/.*)?
102 /var/lib/openais(/.*)?
103 /var/lib/pengine(/.*)?
104 /var/lib/corosync(/.*)?
105 /usr/lib/heartbeat(/.*)?
106 /var/lib/heartbeat(/.*)?
107 /var/lib/pacemaker(/.*)?
108 cluster_var_run_t
110 /var/run/crm(/.*)?
112 /var/run/cman_.*
113 /var/run/rsctmp(/.*)?
114 /var/run/aisexec.*
115 /var/run/heartbeat(/.*)?
116 /var/run/corosync-qnetd(/.*)?
117 /var/run/corosync-qdevice(/.*)?
118 /var/run/corosync.pid
119 /var/run/cpglockd.pid
120 /var/run/rgmanager.pid
121 /var/run/cluster/rgmanager.sk
122 dovecot_spool_t
124 /var/spool/dovecot(/.*)?
126 ecryptfs_t
128 /home/[^/]+/.Private(/.*)?
130 /home/[^/]+/.ecryptfs(/.*)?
131 exim_spool_t
133 /var/spool/exim[0-9]?(/.*)?
135 exim_var_lib_t
137 /var/lib/exim[0-9]?(/.*)?
139 exim_var_run_t
141 /var/run/exim[0-9]?.pid
143 /var/run/exim[0-9]?(/.*)?
144 faillog_t
146 /var/log/btmp.*
148 /var/log/faillog.*
149 /var/log/tallylog.*
150 /var/run/faillock(/.*)?
151 fusefs_t
153 /var/run/user/[^/]*/gvfs
155 mail_home_rw_t
157 /root/Maildir(/.*)?
159 /root/.esmtp_queue(/.*)?
160 /var/lib/arpwatch/.esmtp_queue(/.*)?
161 /home/[^/]+/.maildir(/.*)?
162 /home/[^/]+/Maildir(/.*)?
163 /home/[^/]+/.esmtp_queue(/.*)?
164 mailman_data_t
166 /etc/mailman.*
168 /var/lib/mailman(/.*)?
169 /var/spool/mailman.*
170 nfs_t
172 root_t
175 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
177 /
178 /initrd
179 user_home_t
181 /home/[^/]+/.+
183
186 SELinux requires files to have an extended attribute to define the file
187 type.
188 You can see the context of a file using the -Z option to ls
190 Policy governs the access confined processes have to these files.
192 SELinux exim policy is very flexible allowing users to setup their exim
193 processes in as secure a method as possible.
194 EQUIVALENCE DIRECTORIES
196 exim policy stores data with multiple different file context types
199 under the /var/run/exim[0-9]? directory. If you would like to store
200 the data in a different directory you can use the semanage command to
201 create an equivalence mapping. If you wanted to store this data under
202 the /srv directory you would execute the following command:
203 semanage fcontext -a -e /var/run/exim[0-9]? /srv/exim[0-9]?
205 restorecon -R -v /srv/exim[0-9]?
206 STANDARD FILE CONTEXT
208 SELinux defines the file context types for the exim, if you wanted to
210 store files with these types in a diffent paths, you need to execute
211 the semanage command to sepecify alternate labeling and then use
212 restorecon to put the labels on disk.
213 semanage fcontext -a -t exim_var_run_t '/srv/myexim_content(/.*)?'
215 restorecon -R -v /srv/myexim_content
216 Note: SELinux often uses regular expressions to specify labels that
218 match multiple files.
219 The following file types are defined for exim:
221 exim_exec_t
225 - Set files with the exim_exec_t type, if you want to transition an
227 executable to the exim_t domain.
228 Paths:
231 /usr/sbin/exim[0-9]?, /usr/sbin/exim_tidydb
232 exim_initrc_exec_t
235 - Set files with the exim_initrc_exec_t type, if you want to transition
237 an executable to the exim_initrc_t domain.
238 exim_keytab_t
242 - Set files with the exim_keytab_t type, if you want to treat the files
244 as kerberos keytab files.
245 exim_log_t
249 - Set files with the exim_log_t type, if you want to treat the data as
251 exim log data, usually stored under the /var/log directory.
252 exim_spool_t
256 - Set files with the exim_spool_t type, if you want to store the exim
258 files under the /var/spool directory.
259 exim_tmp_t
263 - Set files with the exim_tmp_t type, if you want to store exim tempo‐
265 rary files in the /tmp directories.
266 exim_var_lib_t
270 - Set files with the exim_var_lib_t type, if you want to store the exim
272 files under the /var/lib directory.
273 exim_var_run_t
277 - Set files with the exim_var_run_t type, if you want to store the exim
279 files under the /run or /var/run directory.
280 Paths:
283 /var/run/exim[0-9]?.pid, /var/run/exim[0-9]?(/.*)?
284 Note: File context can be temporarily modified with the chcon command.
287 If you want to permanently change the file context you need to use the
288 semanage fcontext command. This will modify the SELinux labeling data‐
289 base. You will need to use restorecon to apply the labels.
290
293 semanage fcontext can also be used to manipulate default file context
294 mappings.
295 semanage permissive can also be used to manipulate whether or not a
297 process type is permissive.
298 semanage module can also be used to enable/disable/install/remove pol‐
300 icy modules.
301 semanage boolean can also be used to manipulate the booleans
303 system-config-selinux is a GUI tool available to customize SELinux pol‐
306 icy settings.
307
310 This manual page was auto-generated using sepolicy manpage .
311
314 selinux(8), exim(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
315 setsebool(8)
316exim 20-05-05 exim_selinux(8)