1virtd_lxc_selinux(8) SELinux Policy virtd_lxc virtd_lxc_selinux(8)
2
6 virtd_lxc_selinux - Security Enhanced Linux Policy for the virtd_lxc
7 processes
8
10 Security-Enhanced Linux secures the virtd_lxc processes via flexible
11 mandatory access control.
12 The virtd_lxc processes execute with the virtd_lxc_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
16 For example:
18 ps -eZ | grep virtd_lxc_t
20
24 The virtd_lxc_t SELinux type can be entered via the virtd_lxc_exec_t,
25 file_type file types.
26 The default entrypoint paths for the virtd_lxc_t domain are the follow‐
28 ing:
29 /usr/libexec/libvirt_lxc, all files on the system
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 Policy governs the access confined processes have to files. SELinux
39 virtd_lxc policy is very flexible allowing users to setup their
40 virtd_lxc processes in as secure a method as possible.
41 The following process types are defined for virtd_lxc:
43 virtd_lxc_t
45 Note: semanage permissive -a virtd_lxc_t can be used to make the
47 process type virtd_lxc_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
53 SELinux policy is customizable based on least access required.
54 virtd_lxc policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run virtd_lxc with the tightest
56 access possible.
57 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
63 setsebool -P authlogin_nsswitch_use_ldap 1
65 If you want to allow all daemons the ability to read/write terminals,
69 you must turn on the daemons_use_tty boolean. Disabled by default.
70 setsebool -P daemons_use_tty 1
72 If you want to deny user domains applications to map a memory region as
76 both executable and writable, this is dangerous and the executable
77 should be reported in bugzilla, you must turn on the deny_execmem bool‐
78 ean. Enabled by default.
79 setsebool -P deny_execmem 1
81 If you want to deny any process from ptracing or debugging any other
85 processes, you must turn on the deny_ptrace boolean. Enabled by
86 default.
87 setsebool -P deny_ptrace 1
89 If you want to allow any process to mmap any file on system with
93 attribute file_type, you must turn on the domain_can_mmap_files bool‐
94 ean. Enabled by default.
95 setsebool -P domain_can_mmap_files 1
97 If you want to allow all domains write to kmsg_device, while kernel is
101 executed with systemd.log_target=kmsg parameter, you must turn on the
102 domain_can_write_kmsg boolean. Disabled by default.
103 setsebool -P domain_can_write_kmsg 1
105 If you want to allow all domains to use other domains file descriptors,
109 you must turn on the domain_fd_use boolean. Enabled by default.
110 setsebool -P domain_fd_use 1
112 If you want to allow all domains to have the kernel load modules, you
116 must turn on the domain_kernel_load_modules boolean. Disabled by
117 default.
118 setsebool -P domain_kernel_load_modules 1
120 If you want to allow all domains to execute in fips_mode, you must turn
124 on the fips_mode boolean. Enabled by default.
125 setsebool -P fips_mode 1
127 If you want to enable reading of urandom for all domains, you must turn
131 on the global_ssp boolean. Disabled by default.
132 setsebool -P global_ssp 1
134 If you want to allow confined applications to run with kerberos, you
138 must turn on the kerberos_enabled boolean. Enabled by default.
139 setsebool -P kerberos_enabled 1
141 If you want to control the ability to mmap a low area of the address
145 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
146 the mmap_low_allowed boolean. Disabled by default.
147 setsebool -P mmap_low_allowed 1
149 If you want to allow system to run with NIS, you must turn on the
153 nis_enabled boolean. Disabled by default.
154 setsebool -P nis_enabled 1
156 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.
161 setsebool -P nscd_use_shm 1
163 If you want to disable kernel module loading, you must turn on the
167 secure_mode_insmod boolean. Enabled by default.
168 setsebool -P secure_mode_insmod 1
170 If you want to boolean to determine whether the system permits loading
174 policy, setting enforcing mode, and changing boolean values. Set this
175 to true and you have to reboot to set it back, you must turn on the
176 secure_mode_policyload boolean. Enabled by default.
177 setsebool -P secure_mode_policyload 1
179 If you want to allow unconfined executables to make their heap memory
183 executable. Doing this is a really bad idea. Probably indicates a
184 badly coded executable, but could indicate an attack. This executable
185 should be reported in bugzilla, you must turn on the selin‐
186 uxuser_execheap boolean. Disabled by default.
187 setsebool -P selinuxuser_execheap 1
189 If you want to allow all unconfined executables to use libraries
193 requiring text relocation that are not labeled textrel_shlib_t, you
194 must turn on the selinuxuser_execmod boolean. Enabled by default.
195 setsebool -P selinuxuser_execmod 1
197 If you want to allow unconfined executables to make their stack exe‐
201 cutable. This should never, ever be necessary. Probably indicates a
202 badly coded executable, but could indicate an attack. This executable
203 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
204 stack boolean. Enabled by default.
205 setsebool -P selinuxuser_execstack 1
207 If you want to allow virtual processes to run as userdomains, you must
211 turn on the virt_transition_userdomain boolean. Disabled by default.
212 setsebool -P virt_transition_userdomain 1
214 If you want to support X userspace object manager, you must turn on the
218 xserver_object_manager boolean. Enabled by default.
219 setsebool -P xserver_object_manager 1
221
225 The SELinux process type virtd_lxc_t can manage files labeled with the
226 following file types. The paths listed are the default paths for these
227 file types. Note the processes UID still need to have DAC permissions.
228 file_type
230 all files on the system
232
235 SELinux requires files to have an extended attribute to define the file
236 type.
237 You can see the context of a file using the -Z option to ls
239 Policy governs the access confined processes have to these files.
241 SELinux virtd_lxc policy is very flexible allowing users to setup their
242 virtd_lxc processes in as secure a method as possible.
243 The following file types are defined for virtd_lxc:
245 virtd_lxc_exec_t
249 - Set files with the virtd_lxc_exec_t type, if you want to transition
251 an executable to the virtd_lxc_t domain.
252 Note: File context can be temporarily modified with the chcon command.
256 If you want to permanently change the file context you need to use the
257 semanage fcontext command. This will modify the SELinux labeling data‐
258 base. You will need to use restorecon to apply the labels.
259
262 semanage fcontext can also be used to manipulate default file context
263 mappings.
264 semanage permissive can also be used to manipulate whether or not a
266 process type is permissive.
267 semanage module can also be used to enable/disable/install/remove pol‐
269 icy modules.
270 semanage boolean can also be used to manipulate the booleans
272 system-config-selinux is a GUI tool available to customize SELinux pol‐
275 icy settings.
276
279 This manual page was auto-generated using sepolicy manpage .
280
283 selinux(8), virtd_lxc(8), semanage(8), restorecon(8), chcon(1), sepol‐
284 icy(8) , setsebool(8)
285virtd_lxc 19-04-25 virtd_lxc_selinux(8)