cyrus_selinux(8)

1cyrus_selinux(8)             SELinux Policy cyrus             cyrus_selinux(8)
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NAME

6       cyrus_selinux - Security Enhanced Linux Policy for the cyrus processes
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DESCRIPTION

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

23       The cyrus_t SELinux type can be entered via the cyrus_exec_t file type.
24
25       The default entrypoint paths for the cyrus_t domain are the following:
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27       /usr/lib/cyrus/master, /usr/lib/cyrus-imapd/cyrus-master
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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       cyrus policy is very flexible allowing users to setup their cyrus  pro‐
37       cesses in as secure a method as possible.
38
39       The following process types are defined for cyrus:
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41       cyrus_t
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43       Note:  semanage  permissive  -a cyrus_t can be used to make the process
44       type cyrus_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.   cyrus
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run cyrus with the tightest access possible.
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56       If you want to allow users to resolve user passwd entries directly from
57       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
58       gin_nsswitch_use_ldap boolean. Disabled by default.
59
60       setsebool -P authlogin_nsswitch_use_ldap 1
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63
64       If you want to allow all daemons to write corefiles to /, you must turn
65       on the daemons_dump_core boolean. Disabled by default.
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67       setsebool -P daemons_dump_core 1
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71       If  you  want  to enable cluster mode for daemons, you must turn on the
72       daemons_enable_cluster_mode boolean. Enabled by default.
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74       setsebool -P daemons_enable_cluster_mode 1
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78       If you want to allow all daemons to use tcp wrappers, you must turn  on
79       the daemons_use_tcp_wrapper boolean. Disabled by default.
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81       setsebool -P daemons_use_tcp_wrapper 1
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85       If  you  want to allow all daemons the ability to read/write terminals,
86       you must turn on the daemons_use_tty boolean. Disabled by default.
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88       setsebool -P daemons_use_tty 1
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91
92       If you want to deny any process from ptracing or  debugging  any  other
93       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
94       default.
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96       setsebool -P deny_ptrace 1
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100       If you want to allow any process  to  mmap  any  file  on  system  with
101       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
102       ean. Enabled by default.
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104       setsebool -P domain_can_mmap_files 1
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108       If you want to allow all domains write to kmsg_device, while kernel  is
109       executed  with  systemd.log_target=kmsg parameter, you must turn on the
110       domain_can_write_kmsg boolean. Disabled by default.
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112       setsebool -P domain_can_write_kmsg 1
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116       If you want to allow all domains to use other domains file descriptors,
117       you must turn on the domain_fd_use boolean. Enabled by default.
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119       setsebool -P domain_fd_use 1
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122
123       If  you  want to allow all domains to have the kernel load modules, you
124       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
125       default.
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127       setsebool -P domain_kernel_load_modules 1
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130
131       If you want to allow all domains to execute in fips_mode, you must turn
132       on the fips_mode boolean. Enabled by default.
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134       setsebool -P fips_mode 1
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137
138       If you want to enable reading of urandom for all domains, you must turn
139       on the global_ssp boolean. Disabled by default.
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141       setsebool -P global_ssp 1
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145       If  you  want  to allow confined applications to run with kerberos, you
146       must turn on the kerberos_enabled boolean. Enabled by default.
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148       setsebool -P kerberos_enabled 1
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151
152       If you want to allow system to run with  NIS,  you  must  turn  on  the
153       nis_enabled boolean. Disabled by default.
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155       setsebool -P nis_enabled 1
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158
159       If  you  want to allow confined applications to use nscd shared memory,
160       you must turn on the nscd_use_shm boolean. Disabled by default.
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162       setsebool -P nscd_use_shm 1
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PORT TYPES

167       SELinux defines port types to represent TCP and UDP ports.
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169       You can see the types associated with a port  by  using  the  following
170       command:
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172       semanage port -l
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174
175       Policy  governs  the  access  confined  processes  have to these ports.
176       SELinux cyrus policy is very flexible allowing  users  to  setup  their
177       cyrus processes in as secure a method as possible.
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179       The following port types are defined for cyrus:
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181
182       cyrus_imapd_port_t
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186       Default Defined Ports:
187                 tcp 2005
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MANAGED FILES

190       The SELinux process type cyrus_t can manage files labeled with the fol‐
191       lowing file types.  The paths listed are the default  paths  for  these
192       file types.  Note the processes UID still need to have DAC permissions.
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194       cluster_conf_t
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196            /etc/cluster(/.*)?
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198       cluster_var_lib_t
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200            /var/lib/pcsd(/.*)?
201            /var/lib/cluster(/.*)?
202            /var/lib/openais(/.*)?
203            /var/lib/pengine(/.*)?
204            /var/lib/corosync(/.*)?
205            /usr/lib/heartbeat(/.*)?
206            /var/lib/heartbeat(/.*)?
207            /var/lib/pacemaker(/.*)?
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209       cluster_var_run_t
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211            /var/run/crm(/.*)?
212            /var/run/cman_.*
213            /var/run/rsctmp(/.*)?
214            /var/run/aisexec.*
215            /var/run/heartbeat(/.*)?
216            /var/run/corosync-qnetd(/.*)?
217            /var/run/corosync-qdevice(/.*)?
218            /var/run/cpglockd.pid
219            /var/run/corosync.pid
220            /var/run/rgmanager.pid
221            /var/run/cluster/rgmanager.sk
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223       cyrus_tmp_t
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226       cyrus_var_lib_t
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228            /var/imap(/.*)?
229            /var/lib/imap(/.*)?
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231       cyrus_var_run_t
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233            /var/run/cyrus.*
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235       mail_spool_t
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237            /var/mail(/.*)?
238            /var/spool/imap(/.*)?
239            /var/spool/mail(/.*)?
240            /var/spool/smtpd(/.*)?
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242       root_t
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244            /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
245            /
246            /initrd
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248       snmpd_var_lib_t
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250            /var/agentx(/.*)?
251            /var/net-snmp(/.*)
252            /var/lib/snmp(/.*)?
253            /var/net-snmp(/.*)?
254            /var/lib/net-snmp(/.*)?
255            /var/spool/snmptt(/.*)?
256            /usr/share/snmp/mibs/.index
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FILE CONTEXTS

260       SELinux requires files to have an extended attribute to define the file
261       type.
262
263       You can see the context of a file using the -Z option to ls
264
265       Policy governs the access  confined  processes  have  to  these  files.
266       SELinux  cyrus  policy  is  very flexible allowing users to setup their
267       cyrus processes in as secure a method as possible.
268
269       STANDARD FILE CONTEXT
270
271       SELinux defines the file context types for the cyrus, if you wanted  to
272       store  files  with  these types in a diffent paths, you need to execute
273       the semanage command  to  sepecify  alternate  labeling  and  then  use
274       restorecon to put the labels on disk.
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276       semanage fcontext -a -t cyrus_var_run_t '/srv/mycyrus_content(/.*)?'
277       restorecon -R -v /srv/mycyrus_content
278
279       Note:  SELinux  often  uses  regular expressions to specify labels that
280       match multiple files.
281
282       The following file types are defined for cyrus:
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286       cyrus_exec_t
287
288       - Set files with the cyrus_exec_t type, if you want  to  transition  an
289       executable to the cyrus_t domain.
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291
292       Paths:
293            /usr/lib/cyrus/master, /usr/lib/cyrus-imapd/cyrus-master
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295
296       cyrus_initrc_exec_t
297
298       -  Set  files with the cyrus_initrc_exec_t type, if you want to transi‐
299       tion an executable to the cyrus_initrc_t domain.
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302
303       cyrus_keytab_t
304
305       - Set files with the cyrus_keytab_t type, if  you  want  to  treat  the
306       files as kerberos keytab files.
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310       cyrus_tmp_t
311
312       -  Set files with the cyrus_tmp_t type, if you want to store cyrus tem‐
313       porary files in the /tmp directories.
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317       cyrus_var_lib_t
318
319       - Set files with the cyrus_var_lib_t type, if you  want  to  store  the
320       cyrus files under the /var/lib directory.
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322
323       Paths:
324            /var/imap(/.*)?, /var/lib/imap(/.*)?
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326
327       cyrus_var_run_t
328
329       -  Set  files  with  the cyrus_var_run_t type, if you want to store the
330       cyrus files under the /run or /var/run directory.
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333
334       Note: File context can be temporarily modified with the chcon  command.
335       If  you want to permanently change the file context you need to use the
336       semanage fcontext command.  This will modify the SELinux labeling data‐
337       base.  You will need to use restorecon to apply the labels.
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COMMANDS

341       semanage  fcontext  can also be used to manipulate default file context
342       mappings.
343
344       semanage permissive can also be used to manipulate  whether  or  not  a
345       process type is permissive.
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347       semanage  module can also be used to enable/disable/install/remove pol‐
348       icy modules.
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350       semanage port can also be used to manipulate the port definitions
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352       semanage boolean can also be used to manipulate the booleans
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354
355       system-config-selinux is a GUI tool available to customize SELinux pol‐
356       icy settings.
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AUTHOR

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