1watchdog_selinux(8) SELinux Policy watchdog watchdog_selinux(8)
2
6 watchdog_selinux - Security Enhanced Linux Policy for the watchdog pro‐
7 cesses
8
10 Security-Enhanced Linux secures the watchdog processes via flexible
11 mandatory access control.
12 The watchdog processes execute with the watchdog_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 watchdog_t
20
24 The watchdog_t SELinux type can be entered via the file_type, unla‐
25 beled_t, proc_type, watchdog_exec_t, filesystem_type, mtrr_device_t,
26 sysctl_type file types.
27 The default entrypoint paths for the watchdog_t domain are the follow‐
29 ing:
30 all files on the system, /usr/sbin/watchdog, /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 watchdog policy is very flexible allowing users to setup their watchdog
41 processes in as secure a method as possible.
42 The following process types are defined for watchdog:
44 watchdog_t
46 Note: semanage permissive -a watchdog_t can be used to make the process
48 type watchdog_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. watch‐
55 dog policy is extremely flexible and has several booleans that allow
56 you to manipulate the policy and run watchdog 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 sysadm to debug or ptrace all processes, you must
128 turn on the allow_ptrace boolean. Disabled by default.
129 setsebool -P allow_ptrace 1
131 If you want to allow system to run with NIS, you must turn on the
135 allow_ypbind boolean. Disabled by default.
136 setsebool -P allow_ypbind 1
138 If you want to enable cluster mode for daemons, you must turn on the
142 daemons_enable_cluster_mode boolean. Disabled by default.
143 setsebool -P daemons_enable_cluster_mode 1
145 If you want to allow all domains to have the kernel load modules, you
149 must turn on the domain_kernel_load_modules boolean. Disabled by
150 default.
151 setsebool -P domain_kernel_load_modules 1
153 If you want to allow all domains to execute in fips_mode, you must turn
157 on the fips_mode boolean. Enabled by default.
158 setsebool -P fips_mode 1
160 If you want to enable reading of urandom for all domains, you must turn
164 on the global_ssp boolean. Disabled by default.
165 setsebool -P global_ssp 1
167 If you want to enable support for upstart as the init program, you must
171 turn on the init_upstart boolean. Enabled by default.
172 setsebool -P init_upstart 1
174 If you want to allow certain domains to map low memory in the kernel,
178 you must turn on the mmap_low_allowed boolean. Disabled by default.
179 setsebool -P mmap_low_allowed 1
181 If you want to boolean to determine whether the system permits loading
185 policy, setting enforcing mode, and changing boolean values. Set this
186 to true and you have to reboot to set it back, you must turn on the
187 secure_mode_policyload boolean. Disabled by default.
188 setsebool -P secure_mode_policyload 1
190 If you want to support X userspace object manager, you must turn on the
194 xserver_object_manager boolean. Disabled by default.
195 setsebool -P xserver_object_manager 1
197
201 The SELinux process type watchdog_t can manage files labeled with the
202 following file types. The paths listed are the default paths for these
203 file types. Note the processes UID still need to have DAC permissions.
204 file_type
206 all files on the system
208
211 SELinux requires files to have an extended attribute to define the file
212 type.
213 You can see the context of a file using the -Z option to ls
215 Policy governs the access confined processes have to these files.
217 SELinux watchdog policy is very flexible allowing users to setup their
218 watchdog processes in as secure a method as possible.
219 STANDARD FILE CONTEXT
221 SELinux defines the file context types for the watchdog, if you wanted
223 to store files with these types in a diffent paths, you need to execute
224 the semanage command to sepecify alternate labeling and then use
225 restorecon to put the labels on disk.
226 semanage fcontext -a -t watchdog_var_run_t '/srv/mywatchdog_con‐
228 tent(/.*)?'
229 restorecon -R -v /srv/mywatchdog_content
230 Note: SELinux often uses regular expressions to specify labels that
232 match multiple files.
233 The following file types are defined for watchdog:
235 watchdog_exec_t
239 - Set files with the watchdog_exec_t type, if you want to transition an
241 executable to the watchdog_t domain.
242 watchdog_log_t
246 - Set files with the watchdog_log_t type, if you want to treat the data
248 as watchdog log data, usually stored under the /var/log directory.
249 watchdog_var_run_t
253 - Set files with the watchdog_var_run_t type, if you want to store the
255 watchdog files under the /run or /var/run directory.
256 Note: File context can be temporarily modified with the chcon command.
260 If you want to permanently change the file context you need to use the
261 semanage fcontext command. This will modify the SELinux labeling data‐
262 base. You will need to use restorecon to apply the labels.
263
266 semanage fcontext can also be used to manipulate default file context
267 mappings.
268 semanage permissive can also be used to manipulate whether or not a
270 process type is permissive.
271 semanage module can also be used to enable/disable/install/remove pol‐
273 icy modules.
274 semanage boolean can also be used to manipulate the booleans
276 system-config-selinux is a GUI tool available to customize SELinux pol‐
279 icy settings.
280
283 This manual page was auto-generated using sepolicy manpage .
284
287 selinux(8), watchdog(8), semanage(8), restorecon(8), chcon(1) , setse‐
288 bool(8)
289watchdog 15-06-03 watchdog_selinux(8)