1devicekit_selinux(8) SELinux Policy devicekit devicekit_selinux(8)
2
6 devicekit_selinux - Security Enhanced Linux Policy for the devicekit
7 processes
8
10 Security-Enhanced Linux secures the devicekit processes via flexible
11 mandatory access control.
12 The devicekit processes execute with the devicekit_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 devicekit_t
20
24 The devicekit_t SELinux type can be entered via the devicekit_exec_t
25 file type.
26 The default entrypoint paths for the devicekit_t domain are the follow‐
28 ing:
29 /usr/bin/udisksctl, /usr/libexec/devkit-daemon
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 devicekit policy is very flexible allowing users to setup their de‐
40 vicekit processes in as secure a method as possible.
41 The following process types are defined for devicekit:
43 devicekit_t, devicekit_power_t, devicekit_disk_t
45 Note: semanage permissive -a devicekit_t can be used to make the
47 process type devicekit_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
53 SELinux policy is customizable based on least access required. de‐
54 vicekit policy is extremely flexible and has several booleans that al‐
55 low you to manipulate the policy and run devicekit with the tightest
56 access possible.
57 If you want to dontaudit all daemons scheduling requests (setsched,
61 sys_nice), you must turn on the daemons_dontaudit_scheduling boolean.
62 Enabled by default.
63 setsebool -P daemons_dontaudit_scheduling 1
65 If you want to deny user domains applications to map a memory region as
69 both executable and writable, this is dangerous and the executable
70 should be reported in bugzilla, you must turn on the deny_execmem bool‐
71 ean. Disabled by default.
72 setsebool -P deny_execmem 1
74 If you want to control the ability to mmap a low area of the address
78 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
79 the mmap_low_allowed boolean. Disabled by default.
80 setsebool -P mmap_low_allowed 1
82 If you want to disable kernel module loading, you must turn on the se‐
86 cure_mode_insmod boolean. Disabled by default.
87 setsebool -P secure_mode_insmod 1
89 If you want to allow unconfined executables to make their heap memory
93 executable. Doing this is a really bad idea. Probably indicates a
94 badly coded executable, but could indicate an attack. This executable
95 should be reported in bugzilla, you must turn on the selinuxuser_ex‐
96 echeap boolean. Disabled by default.
97 setsebool -P selinuxuser_execheap 1
99 If you want to allow unconfined executables to make their stack exe‐
103 cutable. This should never, ever be necessary. Probably indicates a
104 badly coded executable, but could indicate an attack. This executable
105 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
106 stack boolean. Enabled by default.
107 setsebool -P selinuxuser_execstack 1
109
113 The SELinux process type devicekit_t can manage files labeled with the
114 following file types. The paths listed are the default paths for these
115 file types. Note the processes UID still need to have DAC permissions.
116 file_type
118 all files on the system
120
123 SELinux requires files to have an extended attribute to define the file
124 type.
125 You can see the context of a file using the -Z option to ls
127 Policy governs the access confined processes have to these files.
129 SELinux devicekit policy is very flexible allowing users to setup their
130 devicekit processes in as secure a method as possible.
131 STANDARD FILE CONTEXT
133 SELinux defines the file context types for the devicekit, if you wanted
135 to store files with these types in a different paths, you need to exe‐
136 cute the semanage command to specify alternate labeling and then use
137 restorecon to put the labels on disk.
138 semanage fcontext -a -t devicekit_exec_t '/srv/devicekit/content(/.*)?'
140 restorecon -R -v /srv/mydevicekit_content
141 Note: SELinux often uses regular expressions to specify labels that
143 match multiple files.
144 The following file types are defined for devicekit:
146 devicekit_disk_exec_t
150 - Set files with the devicekit_disk_exec_t type, if you want to transi‐
152 tion an executable to the devicekit_disk_t domain.
153 Paths:
156 /lib/udisks2/udisksd, /lib/udev/udisks-part-id, /usr/lib/ud‐
157 isks2/udisksd, /usr/libexec/udisks-daemon, /usr/lib/udev/udisks-
158 part-id, /usr/libexec/udisks2/udisksd, /usr/lib/udisks/udisks-dae‐
159 mon, /usr/libexec/devkit-disks-daemon
160 devicekit_exec_t
163 - Set files with the devicekit_exec_t type, if you want to transition
165 an executable to the devicekit_t domain.
166 Paths:
169 /usr/bin/udisksctl, /usr/libexec/devkit-daemon
170 devicekit_power_exec_t
173 - Set files with the devicekit_power_exec_t type, if you want to tran‐
175 sition an executable to the devicekit_power_t domain.
176 Paths:
179 /usr/libexec/upowerd, /usr/lib/upower/upowerd, /usr/libexec/de‐
180 vkit-power-daemon
181 devicekit_tmp_t
184 - Set files with the devicekit_tmp_t type, if you want to store de‐
186 vicekit temporary files in the /tmp directories.
187 devicekit_var_lib_t
191 - Set files with the devicekit_var_lib_t type, if you want to store the
193 devicekit files under the /var/lib directory.
194 Paths:
197 /var/lib/udisks.*, /var/lib/upower(/.*)?, /var/lib/DeviceKit-.*
198 devicekit_var_log_t
201 - Set files with the devicekit_var_log_t type, if you want to treat the
203 data as devicekit var log data, usually stored under the /var/log di‐
204 rectory.
205 Paths:
208 /var/log/pm-suspend.log.*, /var/log/pm-powersave.log.*
209 devicekit_var_run_t
212 - Set files with the devicekit_var_run_t type, if you want to store the
214 devicekit files under the /run or /var/run directory.
215 Paths:
218 /var/run/udisks.*, /var/run/devkit(/.*)?, /var/run/upower(/.*)?,
219 /var/run/pm-utils(/.*)?, /var/run/DeviceKit-disks(/.*)?
220 Note: File context can be temporarily modified with the chcon command.
223 If you want to permanently change the file context you need to use the
224 semanage fcontext command. This will modify the SELinux labeling data‐
225 base. You will need to use restorecon to apply the labels.
226
229 semanage fcontext can also be used to manipulate default file context
230 mappings.
231 semanage permissive can also be used to manipulate whether or not a
233 process type is permissive.
234 semanage module can also be used to enable/disable/install/remove pol‐
236 icy modules.
237 semanage boolean can also be used to manipulate the booleans
239 system-config-selinux is a GUI tool available to customize SELinux pol‐
242 icy settings.
243
246 This manual page was auto-generated using sepolicy manpage .
247
250 selinux(8), devicekit(8), semanage(8), restorecon(8), chcon(1), sepol‐
251 icy(8), setsebool(8), devicekit_disk_selinux(8), de‐
252 vicekit_disk_selinux(8), devicekit_power_selinux(8), de‐
253 vicekit_power_selinux(8)
254devicekit 23-12-15 devicekit_selinux(8)