1namespace_init_selinux(8)SELinux Policy namespace_initnamespace_init_selinux(8)
2
6 namespace_init_selinux - Security Enhanced Linux Policy for the names‐
7 pace_init processes
8
10 Security-Enhanced Linux secures the namespace_init processes via flexi‐
11 ble mandatory access control.
12 The namespace_init processes execute with the namespace_init_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep namespace_init_t
20
24 The namespace_init_t SELinux type can be entered via the names‐
25 pace_init_exec_t file type.
26 The default entrypoint paths for the namespace_init_t domain are the
28 following:
29 /etc/security/namespace.init
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 namespace_init policy is very flexible allowing users to setup their
40 namespace_init processes in as secure a method as possible.
41 The following process types are defined for namespace_init:
43 namespace_init_t
45 Note: semanage permissive -a namespace_init_t can be used to make the
47 process type namespace_init_t permissive. SELinux does not deny access
48 to permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
53 SELinux policy is customizable based on least access required. names‐
54 pace_init policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run namespace_init with the
56 tightest 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 any process from ptracing or debugging any other
76 processes, you must turn on the deny_ptrace boolean. Enabled by
77 default.
78 setsebool -P deny_ptrace 1
80 If you want to allow any process to mmap any file on system with
84 attribute file_type, you must turn on the domain_can_mmap_files bool‐
85 ean. Enabled by default.
86 setsebool -P domain_can_mmap_files 1
88 If you want to allow all domains write to kmsg_device, while kernel is
92 executed with systemd.log_target=kmsg parameter, you must turn on the
93 domain_can_write_kmsg boolean. Disabled by default.
94 setsebool -P domain_can_write_kmsg 1
96 If you want to allow all domains to use other domains file descriptors,
100 you must turn on the domain_fd_use boolean. Enabled by default.
101 setsebool -P domain_fd_use 1
103 If you want to allow all domains to have the kernel load modules, you
107 must turn on the domain_kernel_load_modules boolean. Disabled by
108 default.
109 setsebool -P domain_kernel_load_modules 1
111 If you want to allow all domains to execute in fips_mode, you must turn
115 on the fips_mode boolean. Enabled by default.
116 setsebool -P fips_mode 1
118 If you want to enable reading of urandom for all domains, you must turn
122 on the global_ssp boolean. Disabled by default.
123 setsebool -P global_ssp 1
125 If you want to allow confined applications to run with kerberos, you
129 must turn on the kerberos_enabled boolean. Enabled by default.
130 setsebool -P kerberos_enabled 1
132 If you want to allow system to run with NIS, you must turn on the
136 nis_enabled boolean. Disabled by default.
137 setsebool -P nis_enabled 1
139 If you want to allow confined applications to use nscd shared memory,
143 you must turn on the nscd_use_shm boolean. Disabled by default.
144 setsebool -P nscd_use_shm 1
146 If you want to enable polyinstantiated directory support, you must turn
150 on the polyinstantiation_enabled boolean. Disabled by default.
151 setsebool -P polyinstantiation_enabled 1
153
157 The SELinux process type namespace_init_t can manage files labeled with
158 the following file types. The paths listed are the default paths for
159 these file types. Note the processes UID still need to have DAC per‐
160 missions.
161 security_t
163 /selinux
165 user_home_type
167 all user home files
169
172 SELinux requires files to have an extended attribute to define the file
173 type.
174 You can see the context of a file using the -Z option to ls
176 Policy governs the access confined processes have to these files.
178 SELinux namespace_init policy is very flexible allowing users to setup
179 their namespace_init processes in as secure a method as possible.
180 The following file types are defined for namespace_init:
182 namespace_init_exec_t
186 - Set files with the namespace_init_exec_t type, if you want to transi‐
188 tion an executable to the namespace_init_t domain.
189 Note: File context can be temporarily modified with the chcon command.
193 If you want to permanently change the file context you need to use the
194 semanage fcontext command. This will modify the SELinux labeling data‐
195 base. You will need to use restorecon to apply the labels.
196
199 semanage fcontext can also be used to manipulate default file context
200 mappings.
201 semanage permissive can also be used to manipulate whether or not a
203 process type is permissive.
204 semanage module can also be used to enable/disable/install/remove pol‐
206 icy modules.
207 semanage boolean can also be used to manipulate the booleans
209 system-config-selinux is a GUI tool available to customize SELinux pol‐
212 icy settings.
213
216 This manual page was auto-generated using sepolicy manpage .
217
220 selinux(8), namespace_init(8), semanage(8), restorecon(8), chcon(1),
221 sepolicy(8) , setsebool(8)
222namespace_init 19-04-25 namespace_init_selinux(8)