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 exec_type, mount‐
25 point file types.
26 The default entrypoint paths for the virtd_lxc_t domain are the follow‐
28 ing:
29
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 deny user domains applications to map a memory region as
61 both executable and writable, this is dangerous and the executable
62 should be reported in bugzilla, you must turn on the deny_execmem bool‐
63 ean. Disabled by default.
64 setsebool -P deny_execmem 1
66 If you want to control the ability to mmap a low area of the address
70 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
71 the mmap_low_allowed boolean. Disabled by default.
72 setsebool -P mmap_low_allowed 1
74 If you want to allow system to run with NIS, you must turn on the
78 nis_enabled boolean. Disabled by default.
79 setsebool -P nis_enabled 1
81 If you want to disable kernel module loading, you must turn on the se‐
85 cure_mode_insmod boolean. Disabled by default.
86 setsebool -P secure_mode_insmod 1
88 If you want to allow unconfined executables to make their heap memory
92 executable. Doing this is a really bad idea. Probably indicates a
93 badly coded executable, but could indicate an attack. This executable
94 should be reported in bugzilla, you must turn on the selinuxuser_ex‐
95 echeap boolean. Disabled by default.
96 setsebool -P selinuxuser_execheap 1
98 If you want to allow unconfined executables to make their stack exe‐
102 cutable. This should never, ever be necessary. Probably indicates a
103 badly coded executable, but could indicate an attack. This executable
104 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
105 stack boolean. Enabled by default.
106 setsebool -P selinuxuser_execstack 1
108 If you want to allow virtual processes to run as userdomains, you must
112 turn on the virt_transition_userdomain boolean. Disabled by default.
113 setsebool -P virt_transition_userdomain 1
115
119 The SELinux process type virtd_lxc_t can manage files labeled with the
120 following file types. The paths listed are the default paths for these
121 file types. Note the processes UID still need to have DAC permissions.
122 file_type
124 all files on the system
126
129 SELinux requires files to have an extended attribute to define the file
130 type.
131 You can see the context of a file using the -Z option to ls
133 Policy governs the access confined processes have to these files.
135 SELinux virtd_lxc policy is very flexible allowing users to setup their
136 virtd_lxc processes in as secure a method as possible.
137 STANDARD FILE CONTEXT
139 SELinux defines the file context types for the virtd_lxc, if you wanted
141 to store files with these types in a different paths, you need to exe‐
142 cute the semanage command to specify alternate labeling and then use
143 restorecon to put the labels on disk.
144 semanage fcontext -a -t virtd_lxc_exec_t '/srv/virtd_lxc/content(/.*)?'
146 restorecon -R -v /srv/myvirtd_lxc_content
147 Note: SELinux often uses regular expressions to specify labels that
149 match multiple files.
150 The following file types are defined for virtd_lxc:
152 virtd_lxc_exec_t
156 - Set files with the virtd_lxc_exec_t type, if you want to transition
158 an executable to the virtd_lxc_t domain.
159 Note: File context can be temporarily modified with the chcon command.
163 If you want to permanently change the file context you need to use the
164 semanage fcontext command. This will modify the SELinux labeling data‐
165 base. You will need to use restorecon to apply the labels.
166
169 semanage fcontext can also be used to manipulate default file context
170 mappings.
171 semanage permissive can also be used to manipulate whether or not a
173 process type is permissive.
174 semanage module can also be used to enable/disable/install/remove pol‐
176 icy modules.
177 semanage boolean can also be used to manipulate the booleans
179 system-config-selinux is a GUI tool available to customize SELinux pol‐
182 icy settings.
183
186 This manual page was auto-generated using sepolicy manpage .
187
190 selinux(8), virtd_lxc(8), semanage(8), restorecon(8), chcon(1), sepol‐
191 icy(8), setsebool(8)
192virtd_lxc 23-10-20 virtd_lxc_selinux(8)