1nova_volume_selinux(8) SELinux Policy nova_volume nova_volume_selinux(8)
2
6 nova_volume_selinux - Security Enhanced Linux Policy for the nova_vol‐
7 ume processes
8
10 Security-Enhanced Linux secures the nova_volume processes via flexible
11 mandatory access control.
12 The nova_volume processes execute with the nova_volume_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16 For example:
18 ps -eZ | grep nova_volume_t
20
24 The nova_volume_t SELinux type can be entered via the file_type, unla‐
25 beled_t, proc_type, filesystem_type, mtrr_device_t, nova_volume_exec_t,
26 sysctl_type file types.
27 The default entrypoint paths for the nova_volume_t domain are the fol‐
29 lowing:
30 all files on the system, /dev/cpu/mtrr, /usr/bin/nova-volume
32
34 SELinux defines process types (domains) for each process running on the
35 system
36 You can see the context of a process using the -Z option to ps
38 Policy governs the access confined processes have to files. SELinux
40 nova_volume policy is very flexible allowing users to setup their
41 nova_volume processes in as secure a method as possible.
42 The following process types are defined for nova_volume:
44 nova_volume_t
46 Note: semanage permissive -a nova_volume_t can be used to make the
48 process type nova_volume_t permissive. SELinux does not deny access to
49 permissive process types, but the AVC (SELinux denials) messages are
50 still generated.
51
54 SELinux policy is customizable based on least access required.
55 nova_volume policy is extremely flexible and has several booleans that
56 allow you to manipulate the policy and run nova_volume with the tight‐
57 est access possible.
58 If you want to allow all daemons to write corefiles to /, you must turn
62 on the allow_daemons_dump_core boolean. Disabled by default.
63 setsebool -P allow_daemons_dump_core 1
65 If you want to allow all daemons to use tcp wrappers, you must turn on
69 the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
70 setsebool -P allow_daemons_use_tcp_wrapper 1
72 If you want to allow all daemons the ability to read/write terminals,
76 you must turn on the allow_daemons_use_tty boolean. Disabled by
77 default.
78 setsebool -P allow_daemons_use_tty 1
80 If you want to allow all domains to use other domains file descriptors,
84 you must turn on the allow_domain_fd_use boolean. Enabled by default.
85 setsebool -P allow_domain_fd_use 1
87 If you want to allow unconfined executables to make their heap memory
91 executable. Doing this is a really bad idea. Probably indicates a
92 badly coded executable, but could indicate an attack. This executable
93 should be reported in bugzilla, you must turn on the allow_execheap
94 boolean. Disabled by default.
95 setsebool -P allow_execheap 1
97 If you want to allow unconfined executables to map a memory region as
101 both executable and writable, this is dangerous and the executable
102 should be reported in bugzilla), you must turn on the allow_execmem
103 boolean. Enabled by default.
104 setsebool -P allow_execmem 1
106 If you want to allow all unconfined executables to use libraries
110 requiring text relocation that are not labeled textrel_shlib_t), you
111 must turn on the allow_execmod boolean. Enabled by default.
112 setsebool -P allow_execmod 1
114 If you want to allow unconfined executables to make their stack exe‐
118 cutable. This should never, ever be necessary. Probably indicates a
119 badly coded executable, but could indicate an attack. This executable
120 should be reported in bugzilla), you must turn on the allow_execstack
121 boolean. Enabled by default.
122 setsebool -P allow_execstack 1
124 If you want to allow sysadm to debug or ptrace all processes, you must
128 turn on the allow_ptrace boolean. Disabled by default.
129 setsebool -P allow_ptrace 1
131 If you want to enable cluster mode for daemons, you must turn on the
135 daemons_enable_cluster_mode boolean. Disabled by default.
136 setsebool -P daemons_enable_cluster_mode 1
138 If you want to allow all domains to have the kernel load modules, you
142 must turn on the domain_kernel_load_modules boolean. Disabled by
143 default.
144 setsebool -P domain_kernel_load_modules 1
146 If you want to allow all domains to execute in fips_mode, you must turn
150 on the fips_mode boolean. Enabled by default.
151 setsebool -P fips_mode 1
153 If you want to enable reading of urandom for all domains, you must turn
157 on the global_ssp boolean. Disabled by default.
158 setsebool -P global_ssp 1
160 If you want to enable support for upstart as the init program, you must
164 turn on the init_upstart boolean. Enabled by default.
165 setsebool -P init_upstart 1
167 If you want to allow certain domains to map low memory in the kernel,
171 you must turn on the mmap_low_allowed boolean. Disabled by default.
172 setsebool -P mmap_low_allowed 1
174 If you want to boolean to determine whether the system permits loading
178 policy, setting enforcing mode, and changing boolean values. Set this
179 to true and you have to reboot to set it back, you must turn on the
180 secure_mode_policyload boolean. Disabled by default.
181 setsebool -P secure_mode_policyload 1
183 If you want to support X userspace object manager, you must turn on the
187 xserver_object_manager boolean. Disabled by default.
188 setsebool -P xserver_object_manager 1
190
194 The SELinux process type nova_volume_t can manage files labeled with
195 the following file types. The paths listed are the default paths for
196 these file types. Note the processes UID still need to have DAC per‐
197 missions.
198 file_type
200 all files on the system
202
205 SELinux requires files to have an extended attribute to define the file
206 type.
207 You can see the context of a file using the -Z option to ls
209 Policy governs the access confined processes have to these files.
211 SELinux nova_volume policy is very flexible allowing users to setup
212 their nova_volume processes in as secure a method as possible.
213 STANDARD FILE CONTEXT
215 SELinux defines the file context types for the nova_volume, if you
217 wanted to store files with these types in a diffent paths, you need to
218 execute the semanage command to sepecify alternate labeling and then
219 use restorecon to put the labels on disk.
220 semanage fcontext -a -t nova_volume_tmp_t '/srv/mynova_volume_con‐
222 tent(/.*)?'
223 restorecon -R -v /srv/mynova_volume_content
224 Note: SELinux often uses regular expressions to specify labels that
226 match multiple files.
227 The following file types are defined for nova_volume:
229 nova_volume_exec_t
233 - Set files with the nova_volume_exec_t type, if you want to transition
235 an executable to the nova_volume_t domain.
236 nova_volume_initrc_exec_t
240 - Set files with the nova_volume_initrc_exec_t type, if you want to
242 transition an executable to the nova_volume_initrc_t domain.
243 nova_volume_tmp_t
247 - Set files with the nova_volume_tmp_t type, if you want to store nova
249 volume temporary files in the /tmp directories.
250 Note: File context can be temporarily modified with the chcon command.
254 If you want to permanently change the file context you need to use the
255 semanage fcontext command. This will modify the SELinux labeling data‐
256 base. You will need to use restorecon to apply the labels.
257
260 semanage fcontext can also be used to manipulate default file context
261 mappings.
262 semanage permissive can also be used to manipulate whether or not a
264 process type is permissive.
265 semanage module can also be used to enable/disable/install/remove pol‐
267 icy modules.
268 semanage boolean can also be used to manipulate the booleans
270 system-config-selinux is a GUI tool available to customize SELinux pol‐
273 icy settings.
274
277 This manual page was auto-generated using sepolicy manpage .
278
281 selinux(8), nova_volume(8), semanage(8), restorecon(8), chcon(1) , set‐
282 sebool(8)
283nova_volume 15-06-03 nova_volume_selinux(8)