1keystone_selinux(8) SELinux Policy keystone keystone_selinux(8)
2
6 keystone_selinux - Security Enhanced Linux Policy for the keystone pro‐
7 cesses
8
10 Security-Enhanced Linux secures the keystone processes via flexible
11 mandatory access control.
12 The keystone processes execute with the keystone_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 keystone_t
20
24 The keystone_t SELinux type can be entered via the keystone_exec_t,
25 file_type, unlabeled_t, proc_type, filesystem_type, mtrr_device_t,
26 sysctl_type file types.
27 The default entrypoint paths for the keystone_t domain are the follow‐
29 ing:
30 /usr/bin/keystone-all, all files on the system, /dev/cpu/mtrr
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 keystone policy is very flexible allowing users to setup their keystone
41 processes in as secure a method as possible.
42 The following process types are defined for keystone:
44 keystone_t
46 Note: semanage permissive -a keystone_t can be used to make the process
48 type keystone_t permissive. SELinux does not deny access to permissive
49 process types, but the AVC (SELinux denials) messages are still gener‐
50 ated.
51
54 SELinux policy is customizable based on least access required. key‐
55 stone policy is extremely flexible and has several booleans that allow
56 you to manipulate the policy and run keystone with the tightest access
57 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 confined applications to run with kerberos, you
128 must turn on the allow_kerberos boolean. Enabled by default.
129 setsebool -P allow_kerberos 1
131 If you want to allow sysadm to debug or ptrace all processes, you must
135 turn on the allow_ptrace boolean. Disabled by default.
136 setsebool -P allow_ptrace 1
138 If you want to allow system to run with NIS, you must turn on the
142 allow_ypbind boolean. Disabled by default.
143 setsebool -P allow_ypbind 1
145 If you want to enable cluster mode for daemons, you must turn on the
149 daemons_enable_cluster_mode boolean. Disabled by default.
150 setsebool -P daemons_enable_cluster_mode 1
152 If you want to allow all domains to have the kernel load modules, you
156 must turn on the domain_kernel_load_modules boolean. Disabled by
157 default.
158 setsebool -P domain_kernel_load_modules 1
160 If you want to allow all domains to execute in fips_mode, you must turn
164 on the fips_mode boolean. Enabled by default.
165 setsebool -P fips_mode 1
167 If you want to enable reading of urandom for all domains, you must turn
171 on the global_ssp boolean. Disabled by default.
172 setsebool -P global_ssp 1
174 If you want to enable support for upstart as the init program, you must
178 turn on the init_upstart boolean. Enabled by default.
179 setsebool -P init_upstart 1
181 If you want to allow certain domains to map low memory in the kernel,
185 you must turn on the mmap_low_allowed boolean. Disabled by default.
186 setsebool -P mmap_low_allowed 1
188 If you want to allow confined applications to use nscd shared memory,
192 you must turn on the nscd_use_shm boolean. Enabled by default.
193 setsebool -P nscd_use_shm 1
195 If you want to boolean to determine whether the system permits loading
199 policy, setting enforcing mode, and changing boolean values. Set this
200 to true and you have to reboot to set it back, you must turn on the
201 secure_mode_policyload boolean. Disabled by default.
202 setsebool -P secure_mode_policyload 1
204 If you want to support X userspace object manager, you must turn on the
208 xserver_object_manager boolean. Disabled by default.
209 setsebool -P xserver_object_manager 1
211
215 The SELinux process type keystone_t can manage files labeled with the
216 following file types. The paths listed are the default paths for these
217 file types. Note the processes UID still need to have DAC permissions.
218 file_type
220 all files on the system
222
225 SELinux requires files to have an extended attribute to define the file
226 type.
227 You can see the context of a file using the -Z option to ls
229 Policy governs the access confined processes have to these files.
231 SELinux keystone policy is very flexible allowing users to setup their
232 keystone processes in as secure a method as possible.
233 STANDARD FILE CONTEXT
235 SELinux defines the file context types for the keystone, if you wanted
237 to store files with these types in a diffent paths, you need to execute
238 the semanage command to sepecify alternate labeling and then use
239 restorecon to put the labels on disk.
240 semanage fcontext -a -t keystone_var_run_t '/srv/mykeystone_con‐
242 tent(/.*)?'
243 restorecon -R -v /srv/mykeystone_content
244 Note: SELinux often uses regular expressions to specify labels that
246 match multiple files.
247 The following file types are defined for keystone:
249 keystone_exec_t
253 - Set files with the keystone_exec_t type, if you want to transition an
255 executable to the keystone_t domain.
256 keystone_initrc_exec_t
260 - Set files with the keystone_initrc_exec_t type, if you want to tran‐
262 sition an executable to the keystone_initrc_t domain.
263 keystone_log_t
267 - Set files with the keystone_log_t type, if you want to treat the data
269 as keystone log data, usually stored under the /var/log directory.
270 keystone_tmp_t
274 - Set files with the keystone_tmp_t type, if you want to store keystone
276 temporary files in the /tmp directories.
277 keystone_var_lib_t
281 - Set files with the keystone_var_lib_t type, if you want to store the
283 keystone files under the /var/lib directory.
284 keystone_var_run_t
288 - Set files with the keystone_var_run_t type, if you want to store the
290 keystone files under the /run or /var/run directory.
291 Note: File context can be temporarily modified with the chcon command.
295 If you want to permanently change the file context you need to use the
296 semanage fcontext command. This will modify the SELinux labeling data‐
297 base. You will need to use restorecon to apply the labels.
298
301 semanage fcontext can also be used to manipulate default file context
302 mappings.
303 semanage permissive can also be used to manipulate whether or not a
305 process type is permissive.
306 semanage module can also be used to enable/disable/install/remove pol‐
308 icy modules.
309 semanage boolean can also be used to manipulate the booleans
311 system-config-selinux is a GUI tool available to customize SELinux pol‐
314 icy settings.
315
318 This manual page was auto-generated using sepolicy manpage .
319
322 selinux(8), keystone(8), semanage(8), restorecon(8), chcon(1) , setse‐
323 bool(8)
324keystone 15-06-03 keystone_selinux(8)