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
40 devicekit 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.
54 devicekit policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run devicekit with the tightest
56 access possible.
57 If you want to deny user domains applications to map a memory region as
61 both executable and writable, this is dangerous and the executable
62 should be reported in bugzilla, you must turn on the deny_execmem bool‐
63 ean. Enabled by default.
64 setsebool -P deny_execmem 1
66 If you want to allow all domains to execute in fips_mode, you must turn
70 on the fips_mode boolean. Enabled by default.
71 setsebool -P fips_mode 1
73 If you want to control the ability to mmap a low area of the address
77 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
78 the mmap_low_allowed boolean. Disabled by default.
79 setsebool -P mmap_low_allowed 1
81 If you want to disable kernel module loading, you must turn on the
85 secure_mode_insmod boolean. Enabled by default.
86 setsebool -P secure_mode_insmod 1
88 If you want to allow unconfined executables to make their heap memory
92 executable. Doing this is a really bad idea. Probably indicates a
93 badly coded executable, but could indicate an attack. This executable
94 should be reported in bugzilla, you must turn on the selin‐
95 uxuser_execheap boolean. Disabled by default.
96 setsebool -P selinuxuser_execheap 1
98 If you want to allow unconfined executables to make their stack exe‐
102 cutable. This should never, ever be necessary. Probably indicates a
103 badly coded executable, but could indicate an attack. This executable
104 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
105 stack boolean. Enabled by default.
106 setsebool -P selinuxuser_execstack 1
108
112 The SELinux process type devicekit_t can manage files labeled with the
113 following file types. The paths listed are the default paths for these
114 file types. Note the processes UID still need to have DAC permissions.
115 file_type
117 all files on the system
119
122 SELinux requires files to have an extended attribute to define the file
123 type.
124 You can see the context of a file using the -Z option to ls
126 Policy governs the access confined processes have to these files.
128 SELinux devicekit policy is very flexible allowing users to setup their
129 devicekit processes in as secure a method as possible.
130 STANDARD FILE CONTEXT
132 SELinux defines the file context types for the devicekit, if you wanted
134 to store files with these types in a diffent paths, you need to execute
135 the semanage command to sepecify alternate labeling and then use
136 restorecon to put the labels on disk.
137 semanage fcontext -a -t devicekit_var_log_t '/srv/mydevicekit_con‐
139 tent(/.*)?'
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,
157 /usr/lib/udisks2/udisksd, /usr/libexec/udisks-daemon,
158 /usr/lib/udev/udisks-part-id, /usr/libexec/udisks2/udisksd,
159 /usr/lib/udisks/udisks-daemon, /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,
180 /usr/libexec/devkit-power-daemon
181 devicekit_tmp_t
184 - Set files with the devicekit_tmp_t type, if you want to store
186 devicekit 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
204 directory.
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),
252 devicekit_disk_selinux(8), devicekit_power_selinux(8),
253 devicekit_power_selinux(8)
254devicekit 19-10-08 devicekit_selinux(8)