1sandbox_xserver_selinux(8S)ELinux Policy sandbox_xservesrandbox_xserver_selinux(8)
2
6 sandbox_xserver_selinux - Security Enhanced Linux Policy for the sand‐
7 box_xserver processes
8
10 Security-Enhanced Linux secures the sandbox_xserver processes via flex‐
11 ible mandatory access control.
12 The sandbox_xserver processes execute with the sandbox_xserver_t
14 SELinux type. You can check if you have these processes running by exe‐
15 cuting the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep sandbox_xserver_t
20
24 The sandbox_xserver_t SELinux type can be entered via the
25 xserver_exec_t file type.
26 The default entrypoint paths for the sandbox_xserver_t domain are the
28 following:
29 /usr/bin/Xair, /usr/bin/Xorg, /usr/bin/Xephyr, /usr/X11R6/bin/X,
31 /usr/X11R6/bin/Xorg, /usr/X11R6/bin/Xipaq, /usr/local/bin/x11vnc,
32 /usr/X11R6/bin/XFree86, /usr/X11R6/bin/Xwrapper,
33 /etc/init.d/xfree86-common
34
36 SELinux defines process types (domains) for each process running on the
37 system
38 You can see the context of a process using the -Z option to ps
40 Policy governs the access confined processes have to files. SELinux
42 sandbox_xserver policy is very flexible allowing users to setup their
43 sandbox_xserver processes in as secure a method as possible.
44 The following process types are defined for sandbox_xserver:
46 sandbox_xserver_t
48 Note: semanage permissive -a sandbox_xserver_t can be used to make the
50 process type sandbox_xserver_t permissive. SELinux does not deny access
51 to permissive process types, but the AVC (SELinux denials) messages are
52 still generated.
53
56 SELinux policy is customizable based on least access required. sand‐
57 box_xserver policy is extremely flexible and has several booleans that
58 allow you to manipulate the policy and run sandbox_xserver with the
59 tightest access possible.
60 If you want to allow all domains to use other domains file descriptors,
64 you must turn on the allow_domain_fd_use boolean. Enabled by default.
65 setsebool -P allow_domain_fd_use 1
67 If you want to allow confined applications to run with kerberos, you
71 must turn on the allow_kerberos boolean. Enabled by default.
72 setsebool -P allow_kerberos 1
74 If you want to allow sysadm to debug or ptrace all processes, you must
78 turn on the allow_ptrace boolean. Disabled by default.
79 setsebool -P allow_ptrace 1
81 If you want to allows clients to write to the X server shared memory
85 segments, you must turn on the allow_write_xshm boolean. Disabled by
86 default.
87 setsebool -P allow_write_xshm 1
89 If you want to allow system to run with NIS, you must turn on the
93 allow_ypbind boolean. Disabled by default.
94 setsebool -P allow_ypbind 1
96 If you want to allow all domains to have the kernel load modules, you
100 must turn on the domain_kernel_load_modules boolean. Disabled by
101 default.
102 setsebool -P domain_kernel_load_modules 1
104 If you want to allow all domains to execute in fips_mode, you must turn
108 on the fips_mode boolean. Enabled by default.
109 setsebool -P fips_mode 1
111 If you want to enable reading of urandom for all domains, you must turn
115 on the global_ssp boolean. Disabled by default.
116 setsebool -P global_ssp 1
118 If you want to allow confined applications to use nscd shared memory,
122 you must turn on the nscd_use_shm boolean. Enabled by default.
123 setsebool -P nscd_use_shm 1
125 If you want to support fusefs home directories, you must turn on the
129 use_fusefs_home_dirs boolean. Disabled by default.
130 setsebool -P use_fusefs_home_dirs 1
132 If you want to support NFS home directories, you must turn on the
136 use_nfs_home_dirs boolean. Disabled by default.
137 setsebool -P use_nfs_home_dirs 1
139 If you want to support SAMBA home directories, you must turn on the
143 use_samba_home_dirs boolean. Disabled by default.
144 setsebool -P use_samba_home_dirs 1
146 If you want to support X userspace object manager, you must turn on the
150 xserver_object_manager boolean. Disabled by default.
151 setsebool -P xserver_object_manager 1
153
157 The SELinux process type sandbox_xserver_t can manage files labeled
158 with the following file types. The paths listed are the default paths
159 for these file types. Note the processes UID still need to have DAC
160 permissions.
161 initrc_tmp_t
163 mnt_t
166 /mnt(/[^/]*)
168 /mnt(/[^/]*)?
169 /rhev(/[^/]*)?
170 /media(/[^/]*)
171 /media(/[^/]*)?
172 /etc/rhgb(/.*)?
173 /media/.hal-.*
174 /net
175 /afs
176 /rhev
177 /misc
178 sandbox_file_t
180 sandbox_xserver_tmpfs_t
183 security_t
186 tmp_t
189 /tmp
191 /usr/tmp
192 /var/tmp
193 /tmp-inst
194 /var/tmp-inst
195 /var/tmp/vi.recover
196 user_fonts_cache_t
198 /home/[^/]*/.fonts/auto(/.*)?
200 /home/[^/]*/.fontconfig(/.*)?
201 /home/[^/]*/.fonts.cache-.*
202 /home/staff/.fonts/auto(/.*)?
203 /home/staff/.fontconfig(/.*)?
204 /home/staff/.fonts.cache-.*
205 xserver_tmpfs_t
207
211 semanage fcontext can also be used to manipulate default file context
212 mappings.
213 semanage permissive can also be used to manipulate whether or not a
215 process type is permissive.
216 semanage module can also be used to enable/disable/install/remove pol‐
218 icy modules.
219 semanage boolean can also be used to manipulate the booleans
221 system-config-selinux is a GUI tool available to customize SELinux pol‐
224 icy settings.
225
228 This manual page was auto-generated using sepolicy manpage .
229
232 selinux(8), sandbox_xserver(8), semanage(8), restorecon(8), chcon(1) ,
233 setsebool(8)
234sandbox_xserver 15-06-03 sandbox_xserver_selinux(8)