1gssd_selinux(8) SELinux Policy gssd gssd_selinux(8)
2
6 gssd_selinux - Security Enhanced Linux Policy for the gssd processes
7
9 Security-Enhanced Linux secures the gssd processes via flexible manda‐
10 tory access control.
11 The gssd processes execute with the gssd_t SELinux type. You can check
13 if you have these processes running by executing the ps command with
14 the -Z qualifier.
15 For example:
17 ps -eZ | grep gssd_t
19
23 The gssd_t SELinux type can be entered via the gssd_exec_t file type.
24 The default entrypoint paths for the gssd_t domain are the following:
26 /usr/sbin/rpc.gssd, /usr/sbin/rpc.svcgssd
28
30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 gssd policy is very flexible allowing users to setup their gssd pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for gssd:
40 gssd_t
42 Note: semanage permissive -a gssd_t can be used to make the process
44 type gssd_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
47
50 SELinux policy is customizable based on least access required. gssd
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run gssd with the tightest access possible.
53 If you want to allow all daemons to write corefiles to /, you must turn
57 on the allow_daemons_dump_core boolean. Disabled by default.
58 setsebool -P allow_daemons_dump_core 1
60 If you want to allow all daemons to use tcp wrappers, you must turn on
64 the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
65 setsebool -P allow_daemons_use_tcp_wrapper 1
67 If you want to allow all daemons the ability to read/write terminals,
71 you must turn on the allow_daemons_use_tty boolean. Disabled by
72 default.
73 setsebool -P allow_daemons_use_tty 1
75 If you want to allow all domains to use other domains file descriptors,
79 you must turn on the allow_domain_fd_use boolean. Enabled by default.
80 setsebool -P allow_domain_fd_use 1
82 If you want to allow gssd to read temp directory. For access to ker‐
86 beros tgt, you must turn on the allow_gssd_read_tmp boolean. Enabled by
87 default.
88 setsebool -P allow_gssd_read_tmp 1
90 If you want to allow confined applications to run with kerberos, you
94 must turn on the allow_kerberos boolean. Enabled by default.
95 setsebool -P allow_kerberos 1
97 If you want to allow sysadm to debug or ptrace all processes, you must
101 turn on the allow_ptrace boolean. Disabled by default.
102 setsebool -P allow_ptrace 1
104 If you want to allow system to run with NIS, you must turn on the
108 allow_ypbind boolean. Disabled by default.
109 setsebool -P allow_ypbind 1
111 If you want to enable cluster mode for daemons, you must turn on the
115 daemons_enable_cluster_mode boolean. Disabled by default.
116 setsebool -P daemons_enable_cluster_mode 1
118 If you want to allow all domains to have the kernel load modules, you
122 must turn on the domain_kernel_load_modules boolean. Disabled by
123 default.
124 setsebool -P domain_kernel_load_modules 1
126 If you want to allow all domains to execute in fips_mode, you must turn
130 on the fips_mode boolean. Enabled by default.
131 setsebool -P fips_mode 1
133 If you want to enable reading of urandom for all domains, you must turn
137 on the global_ssp boolean. Disabled by default.
138 setsebool -P global_ssp 1
140 If you want to enable support for upstart as the init program, you must
144 turn on the init_upstart boolean. Enabled by default.
145 setsebool -P init_upstart 1
147 If you want to allow confined applications to use nscd shared memory,
151 you must turn on the nscd_use_shm boolean. Enabled by default.
152 setsebool -P nscd_use_shm 1
154
158 The SELinux process type gssd_t can manage files labeled with the fol‐
159 lowing file types. The paths listed are the default paths for these
160 file types. Note the processes UID still need to have DAC permissions.
161 auth_cache_t
163 /var/cache/coolkey(/.*)?
165 cluster_conf_t
167 /etc/cluster(/.*)?
169 cluster_var_lib_t
171 /var/lib(64)?/openais(/.*)?
173 /var/lib(64)?/pengine(/.*)?
174 /var/lib(64)?/corosync(/.*)?
175 /usr/lib(64)?/heartbeat(/.*)?
176 /var/lib(64)?/heartbeat(/.*)?
177 /var/lib(64)?/pacemaker(/.*)?
178 /var/lib/cluster(/.*)?
179 cluster_var_run_t
181 /var/run/crm(/.*)?
183 /var/run/cman_.*
184 /var/run/rsctmp(/.*)?
185 /var/run/aisexec.*
186 /var/run/heartbeat(/.*)?
187 /var/run/cpglockd.pid
188 /var/run/corosync.pid
189 /var/run/rgmanager.pid
190 /var/run/cluster/rgmanager.sk
191 gssd_tmp_t
193 initrc_tmp_t
196 mnt_t
199 /mnt(/[^/]*)
201 /mnt(/[^/]*)?
202 /rhev(/[^/]*)?
203 /media(/[^/]*)
204 /media(/[^/]*)?
205 /etc/rhgb(/.*)?
206 /media/.hal-.*
207 /net
208 /afs
209 /rhev
210 /misc
211 root_t
213 /
215 /initrd
216 tmp_t
218 /tmp
220 /usr/tmp
221 /var/tmp
222 /tmp-inst
223 /var/tmp-inst
224 /var/tmp/vi.recover
225 user_tmp_t
227 /tmp/gconfd-.*
229 /tmp/gconfd-staff
230 var_lib_nfs_t
232 /var/lib/nfs(/.*)?
234 xdm_tmp_t
236 /tmp/.X11-unix(/.*)?
238 /tmp/.ICE-unix(/.*)?
239 /tmp/.X0-lock
240
243 SELinux requires files to have an extended attribute to define the file
244 type.
245 You can see the context of a file using the -Z option to ls
247 Policy governs the access confined processes have to these files.
249 SELinux gssd policy is very flexible allowing users to setup their gssd
250 processes in as secure a method as possible.
251 STANDARD FILE CONTEXT
253 SELinux defines the file context types for the gssd, if you wanted to
255 store files with these types in a diffent paths, you need to execute
256 the semanage command to sepecify alternate labeling and then use
257 restorecon to put the labels on disk.
258 semanage fcontext -a -t gssd_tmp_t '/srv/mygssd_content(/.*)?'
260 restorecon -R -v /srv/mygssd_content
261 Note: SELinux often uses regular expressions to specify labels that
263 match multiple files.
264 The following file types are defined for gssd:
266 gssd_exec_t
270 - Set files with the gssd_exec_t type, if you want to transition an
272 executable to the gssd_t domain.
273 Paths:
276 /usr/sbin/rpc.gssd, /usr/sbin/rpc.svcgssd
277 gssd_keytab_t
280 - Set files with the gssd_keytab_t type, if you want to treat the files
282 as kerberos keytab files.
283 gssd_tmp_t
287 - Set files with the gssd_tmp_t type, if you want to store gssd tempo‐
289 rary files in the /tmp directories.
290 Note: File context can be temporarily modified with the chcon command.
294 If you want to permanently change the file context you need to use the
295 semanage fcontext command. This will modify the SELinux labeling data‐
296 base. You will need to use restorecon to apply the labels.
297
300 semanage fcontext can also be used to manipulate default file context
301 mappings.
302 semanage permissive can also be used to manipulate whether or not a
304 process type is permissive.
305 semanage module can also be used to enable/disable/install/remove pol‐
307 icy modules.
308 semanage boolean can also be used to manipulate the booleans
310 system-config-selinux is a GUI tool available to customize SELinux pol‐
313 icy settings.
314
317 This manual page was auto-generated using sepolicy manpage .
318
321 selinux(8), gssd(8), semanage(8), restorecon(8), chcon(1) , setse‐
322 bool(8)
323gssd 15-06-03 gssd_selinux(8)