1xend_selinux(8) SELinux Policy xend xend_selinux(8)
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6 xend_selinux - Security Enhanced Linux Policy for the xend processes
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9 Security-Enhanced Linux secures the xend processes via flexible manda‐
10 tory access control.
11 The xend processes execute with the xend_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 xend_t
19
23 The xend_t SELinux type can be entered via the file_type, unlabeled_t,
24 proc_type, filesystem_type, xend_exec_t, mtrr_device_t, sysctl_type
25 file types.
26 The default entrypoint paths for the xend_t domain are the following:
28 all files on the system, /usr/sbin/xend, /dev/cpu/mtrr
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32 SELinux defines process types (domains) for each process running on the
33 system
34 You can see the context of a process using the -Z option to ps
36 Policy governs the access confined processes have to files. SELinux
38 xend policy is very flexible allowing users to setup their xend pro‐
39 cesses in as secure a method as possible.
40 The following process types are defined for xend:
42 xend_t
44 Note: semanage permissive -a xend_t can be used to make the process
46 type xend_t permissive. SELinux does not deny access to permissive
47 process types, but the AVC (SELinux denials) messages are still gener‐
48 ated.
49
52 SELinux policy is customizable based on least access required. xend
53 policy is extremely flexible and has several booleans that allow you to
54 manipulate the policy and run xend with the tightest access possible.
55 If you want to allow xen to manage nfs files, you must turn on the
59 xen_use_nfs boolean. Disabled by default.
60 setsebool -P xen_use_nfs 1
62 If you want to allow all daemons to write corefiles to /, you must turn
66 on the allow_daemons_dump_core boolean. Disabled by default.
67 setsebool -P allow_daemons_dump_core 1
69 If you want to allow all daemons to use tcp wrappers, you must turn on
73 the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
74 setsebool -P allow_daemons_use_tcp_wrapper 1
76 If you want to allow all daemons the ability to read/write terminals,
80 you must turn on the allow_daemons_use_tty boolean. Disabled by
81 default.
82 setsebool -P allow_daemons_use_tty 1
84 If you want to allow all domains to use other domains file descriptors,
88 you must turn on the allow_domain_fd_use boolean. Enabled by default.
89 setsebool -P allow_domain_fd_use 1
91 If you want to allow unconfined executables to make their heap memory
95 executable. Doing this is a really bad idea. Probably indicates a
96 badly coded executable, but could indicate an attack. This executable
97 should be reported in bugzilla, you must turn on the allow_execheap
98 boolean. Disabled by default.
99 setsebool -P allow_execheap 1
101 If you want to allow unconfined executables to map a memory region as
105 both executable and writable, this is dangerous and the executable
106 should be reported in bugzilla), you must turn on the allow_execmem
107 boolean. Enabled by default.
108 setsebool -P allow_execmem 1
110 If you want to allow all unconfined executables to use libraries
114 requiring text relocation that are not labeled textrel_shlib_t), you
115 must turn on the allow_execmod boolean. Enabled by default.
116 setsebool -P allow_execmod 1
118 If you want to allow unconfined executables to make their stack exe‐
122 cutable. This should never, ever be necessary. Probably indicates a
123 badly coded executable, but could indicate an attack. This executable
124 should be reported in bugzilla), you must turn on the allow_execstack
125 boolean. Enabled by default.
126 setsebool -P allow_execstack 1
128 If you want to allow sysadm to debug or ptrace all processes, you must
132 turn on the allow_ptrace boolean. Disabled by default.
133 setsebool -P allow_ptrace 1
135 If you want to enable cluster mode for daemons, you must turn on the
139 daemons_enable_cluster_mode boolean. Disabled by default.
140 setsebool -P daemons_enable_cluster_mode 1
142 If you want to allow all domains to have the kernel load modules, you
146 must turn on the domain_kernel_load_modules boolean. Disabled by
147 default.
148 setsebool -P domain_kernel_load_modules 1
150 If you want to allow all domains to execute in fips_mode, you must turn
154 on the fips_mode boolean. Enabled by default.
155 setsebool -P fips_mode 1
157 If you want to enable reading of urandom for all domains, you must turn
161 on the global_ssp boolean. Disabled by default.
162 setsebool -P global_ssp 1
164 If you want to enable support for upstart as the init program, you must
168 turn on the init_upstart boolean. Enabled by default.
169 setsebool -P init_upstart 1
171 If you want to allow certain domains to map low memory in the kernel,
175 you must turn on the mmap_low_allowed boolean. Disabled by default.
176 setsebool -P mmap_low_allowed 1
178 If you want to boolean to determine whether the system permits loading
182 policy, setting enforcing mode, and changing boolean values. Set this
183 to true and you have to reboot to set it back, you must turn on the
184 secure_mode_policyload boolean. Disabled by default.
185 setsebool -P secure_mode_policyload 1
187 If you want to support X userspace object manager, you must turn on the
191 xserver_object_manager boolean. Disabled by default.
192 setsebool -P xserver_object_manager 1
194
198 SELinux defines port types to represent TCP and UDP ports.
199 You can see the types associated with a port by using the following
201 command:
202 semanage port -l
204 Policy governs the access confined processes have to these ports.
207 SELinux xend policy is very flexible allowing users to setup their xend
208 processes in as secure a method as possible.
209 The following port types are defined for xend:
211 xen_port_t
214 Default Defined Ports:
218 tcp 8002
219
221 The SELinux process type xend_t can manage files labeled with the fol‐
222 lowing file types. The paths listed are the default paths for these
223 file types. Note the processes UID still need to have DAC permissions.
224 file_type
226 all files on the system
228
231 SELinux requires files to have an extended attribute to define the file
232 type.
233 You can see the context of a file using the -Z option to ls
235 Policy governs the access confined processes have to these files.
237 SELinux xend policy is very flexible allowing users to setup their xend
238 processes in as secure a method as possible.
239 EQUIVALENCE DIRECTORIES
241 xend policy stores data with multiple different file context types
244 under the /var/log/xen directory. If you would like to store the data
245 in a different directory you can use the semanage command to create an
246 equivalence mapping. If you wanted to store this data under the /srv
247 dirctory you would execute the following command:
248 semanage fcontext -a -e /var/log/xen /srv/xen
250 restorecon -R -v /srv/xen
251 xend policy stores data with multiple different file context types
253 under the /var/lib/xen directory. If you would like to store the data
254 in a different directory you can use the semanage command to create an
255 equivalence mapping. If you wanted to store this data under the /srv
256 dirctory you would execute the following command:
257 semanage fcontext -a -e /var/lib/xen /srv/xen
259 restorecon -R -v /srv/xen
260 xend policy stores data with multiple different file context types
262 under the /var/run/xend directory. If you would like to store the data
263 in a different directory you can use the semanage command to create an
264 equivalence mapping. If you wanted to store this data under the /srv
265 dirctory you would execute the following command:
266 semanage fcontext -a -e /var/run/xend /srv/xend
268 restorecon -R -v /srv/xend
269 STANDARD FILE CONTEXT
271 SELinux defines the file context types for the xend, if you wanted to
273 store files with these types in a diffent paths, you need to execute
274 the semanage command to sepecify alternate labeling and then use
275 restorecon to put the labels on disk.
276 semanage fcontext -a -t xend_var_run_t '/srv/myxend_content(/.*)?'
278 restorecon -R -v /srv/myxend_content
279 Note: SELinux often uses regular expressions to specify labels that
281 match multiple files.
282 The following file types are defined for xend:
284 xend_exec_t
288 - Set files with the xend_exec_t type, if you want to transition an
290 executable to the xend_t domain.
291 xend_tmp_t
295 - Set files with the xend_tmp_t type, if you want to store xend tempo‐
297 rary files in the /tmp directories.
298 xend_var_lib_t
302 - Set files with the xend_var_lib_t type, if you want to store the xend
304 files under the /var/lib directory.
305 Paths:
308 /var/lib/xen(/.*)?, /var/lib/xend(/.*)?
309 xend_var_log_t
312 - Set files with the xend_var_log_t type, if you want to treat the data
314 as xend var log data, usually stored under the /var/log directory.
315 Paths:
318 /var/log/xen(/.*)?, /var/log/xend.log.*, /var/log/xend-
319 debug.log.*, /var/log/xen-hotplug.log.*
320 xend_var_run_t
323 - Set files with the xend_var_run_t type, if you want to store the xend
325 files under the /run or /var/run directory.
326 Paths:
329 /var/run/xend(/.*)?, /var/run/xenner(/.*)?, /var/run/xend.pid
330 Note: File context can be temporarily modified with the chcon command.
333 If you want to permanently change the file context you need to use the
334 semanage fcontext command. This will modify the SELinux labeling data‐
335 base. You will need to use restorecon to apply the labels.
336
339 semanage fcontext can also be used to manipulate default file context
340 mappings.
341 semanage permissive can also be used to manipulate whether or not a
343 process type is permissive.
344 semanage module can also be used to enable/disable/install/remove pol‐
346 icy modules.
347 semanage port can also be used to manipulate the port definitions
349 semanage boolean can also be used to manipulate the booleans
351 system-config-selinux is a GUI tool available to customize SELinux pol‐
354 icy settings.
355
358 This manual page was auto-generated using sepolicy manpage .
359
362 selinux(8), xend(8), semanage(8), restorecon(8), chcon(1) , setse‐
363 bool(8)
364xend 15-06-03 xend_selinux(8)