1foghorn_selinux(8) SELinux Policy foghorn foghorn_selinux(8)
2
6 foghorn_selinux - Security Enhanced Linux Policy for the foghorn pro‐
7 cesses
8
10 Security-Enhanced Linux secures the foghorn processes via flexible
11 mandatory access control.
12 The foghorn processes execute with the foghorn_t SELinux type. You can
14 check if you have these processes running by executing the ps command
15 with the -Z qualifier.
16 For example:
18 ps -eZ | grep foghorn_t
20
24 The foghorn_t SELinux type can be entered via the file_type, unla‐
25 beled_t, proc_type, filesystem_type, mtrr_device_t, sysctl_type,
26 foghorn_exec_t file types.
27 The default entrypoint paths for the foghorn_t domain are the follow‐
29 ing:
30 all files on the system, /dev/cpu/mtrr, /usr/sbin/foghorn
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 foghorn policy is very flexible allowing users to setup their foghorn
41 processes in as secure a method as possible.
42 The following process types are defined for foghorn:
44 foghorn_t
46 Note: semanage permissive -a foghorn_t can be used to make the process
48 type foghorn_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. foghorn
55 policy is extremely flexible and has several booleans that allow you to
56 manipulate the policy and run foghorn with the tightest access possi‐
57 ble.
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 allow cluster administrative cluster domains memcheck-
149 amd64- to use executable memory, you must turn on the clus‐
150 ter_use_execmem boolean. Disabled by default.
151 setsebool -P cluster_use_execmem 1
153 If you want to enable cluster mode for daemons, you must turn on the
157 daemons_enable_cluster_mode boolean. Disabled by default.
158 setsebool -P daemons_enable_cluster_mode 1
160 If you want to allow all domains to have the kernel load modules, you
164 must turn on the domain_kernel_load_modules boolean. Disabled by
165 default.
166 setsebool -P domain_kernel_load_modules 1
168 If you want to allow all domains to execute in fips_mode, you must turn
172 on the fips_mode boolean. Enabled by default.
173 setsebool -P fips_mode 1
175 If you want to enable reading of urandom for all domains, you must turn
179 on the global_ssp boolean. Disabled by default.
180 setsebool -P global_ssp 1
182 If you want to enable support for upstart as the init program, you must
186 turn on the init_upstart boolean. Enabled by default.
187 setsebool -P init_upstart 1
189 If you want to allow certain domains to map low memory in the kernel,
193 you must turn on the mmap_low_allowed boolean. Disabled by default.
194 setsebool -P mmap_low_allowed 1
196 If you want to allow confined applications to use nscd shared memory,
200 you must turn on the nscd_use_shm boolean. Enabled by default.
201 setsebool -P nscd_use_shm 1
203 If you want to boolean to determine whether the system permits loading
207 policy, setting enforcing mode, and changing boolean values. Set this
208 to true and you have to reboot to set it back, you must turn on the
209 secure_mode_policyload boolean. Disabled by default.
210 setsebool -P secure_mode_policyload 1
212 If you want to support X userspace object manager, you must turn on the
216 xserver_object_manager boolean. Disabled by default.
217 setsebool -P xserver_object_manager 1
219
223 The SELinux process type foghorn_t can manage files labeled with the
224 following file types. The paths listed are the default paths for these
225 file types. Note the processes UID still need to have DAC permissions.
226 file_type
228 all files on the system
230
233 SELinux requires files to have an extended attribute to define the file
234 type.
235 You can see the context of a file using the -Z option to ls
237 Policy governs the access confined processes have to these files.
239 SELinux foghorn policy is very flexible allowing users to setup their
240 foghorn processes in as secure a method as possible.
241 STANDARD FILE CONTEXT
243 SELinux defines the file context types for the foghorn, if you wanted
245 to store files with these types in a diffent paths, you need to execute
246 the semanage command to sepecify alternate labeling and then use
247 restorecon to put the labels on disk.
248 semanage fcontext -a -t foghorn_var_run_t '/srv/myfoghorn_con‐
250 tent(/.*)?'
251 restorecon -R -v /srv/myfoghorn_content
252 Note: SELinux often uses regular expressions to specify labels that
254 match multiple files.
255 The following file types are defined for foghorn:
257 foghorn_exec_t
261 - Set files with the foghorn_exec_t type, if you want to transition an
263 executable to the foghorn_t domain.
264 foghorn_tmpfs_t
268 - Set files with the foghorn_tmpfs_t type, if you want to store foghorn
270 files on a tmpfs file system.
271 foghorn_var_log_t
275 - Set files with the foghorn_var_log_t type, if you want to treat the
277 data as foghorn var log data, usually stored under the /var/log direc‐
278 tory.
279 foghorn_var_run_t
283 - Set files with the foghorn_var_run_t type, if you want to store the
285 foghorn files under the /run or /var/run directory.
286 Note: File context can be temporarily modified with the chcon command.
290 If you want to permanently change the file context you need to use the
291 semanage fcontext command. This will modify the SELinux labeling data‐
292 base. You will need to use restorecon to apply the labels.
293
296 semanage fcontext can also be used to manipulate default file context
297 mappings.
298 semanage permissive can also be used to manipulate whether or not a
300 process type is permissive.
301 semanage module can also be used to enable/disable/install/remove pol‐
303 icy modules.
304 semanage boolean can also be used to manipulate the booleans
306 system-config-selinux is a GUI tool available to customize SELinux pol‐
309 icy settings.
310
313 This manual page was auto-generated using sepolicy manpage .
314
317 selinux(8), foghorn(8), semanage(8), restorecon(8), chcon(1) , setse‐
318 bool(8)
319foghorn 15-06-03 foghorn_selinux(8)