1update_modules_selinux(8)SELinux Policy update_modulesupdate_modules_selinux(8)
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6 update_modules_selinux - Security Enhanced Linux Policy for the
7 update_modules processes
8
10 Security-Enhanced Linux secures the update_modules processes via flexi‐
11 ble mandatory access control.
12 The update_modules processes execute with the update_modules_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep update_modules_t
20
24 The update_modules_t SELinux type can be entered via the update_mod‐
25 ules_exec_t file type.
26 The default entrypoint paths for the update_modules_t domain are the
28 following:
29 /sbin/modules-update, /sbin/update-modules, /sbin/generate-mod‐
31 probe.conf
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 update_modules policy is very flexible allowing users to setup their
41 update_modules processes in as secure a method as possible.
42 The following process types are defined for update_modules:
44 update_modules_t
46 Note: semanage permissive -a update_modules_t can be used to make the
48 process type update_modules_t permissive. SELinux does not deny access
49 to permissive process types, but the AVC (SELinux denials) messages are
50 still generated.
51
54 SELinux policy is customizable based on least access required.
55 update_modules policy is extremely flexible and has several booleans
56 that allow you to manipulate the policy and run update_modules with the
57 tightest access possible.
58 If you want to allow all daemons the ability to read/write terminals,
62 you must turn on the allow_daemons_use_tty boolean. Disabled by
63 default.
64 setsebool -P allow_daemons_use_tty 1
66 If you want to allow all domains to use other domains file descriptors,
70 you must turn on the allow_domain_fd_use boolean. Enabled by default.
71 setsebool -P allow_domain_fd_use 1
73 If you want to allow sysadm to debug or ptrace all processes, you must
77 turn on the allow_ptrace boolean. Disabled by default.
78 setsebool -P allow_ptrace 1
80 If you want to allow all domains to have the kernel load modules, you
84 must turn on the domain_kernel_load_modules boolean. Disabled by
85 default.
86 setsebool -P domain_kernel_load_modules 1
88 If you want to allow all domains to execute in fips_mode, you must turn
92 on the fips_mode boolean. Enabled by default.
93 setsebool -P fips_mode 1
95 If you want to enable reading of urandom for all domains, you must turn
99 on the global_ssp boolean. Disabled by default.
100 setsebool -P global_ssp 1
102 If you want to disable transitions to insmod, you must turn on the
106 secure_mode_insmod boolean. Disabled by default.
107 setsebool -P secure_mode_insmod 1
109
113 The SELinux process type update_modules_t can manage files labeled with
114 the following file types. The paths listed are the default paths for
115 these file types. Note the processes UID still need to have DAC per‐
116 missions.
117 initrc_tmp_t
119 mnt_t
122 /mnt(/[^/]*)
124 /mnt(/[^/]*)?
125 /rhev(/[^/]*)?
126 /media(/[^/]*)
127 /media(/[^/]*)?
128 /etc/rhgb(/.*)?
129 /media/.hal-.*
130 /net
131 /afs
132 /rhev
133 /misc
134 modules_conf_t
136 /etc/modprobe.d(/.*)?
138 /etc/modules.conf.*
139 /etc/modprobe.conf.*
140 /lib/modules/modprobe.conf
141 /lib64/modules/modprobe.conf
142 modules_dep_t
144 /lib/modules/[^/]+/modules..+
146 /lib64/modules/[^/]+/modules..+
147 tmp_t
149 /tmp
151 /usr/tmp
152 /var/tmp
153 /tmp-inst
154 /var/tmp-inst
155 /var/tmp/vi.recover
156 update_modules_tmp_t
158
162 SELinux requires files to have an extended attribute to define the file
163 type.
164 You can see the context of a file using the -Z option to ls
166 Policy governs the access confined processes have to these files.
168 SELinux update_modules policy is very flexible allowing users to setup
169 their update_modules processes in as secure a method as possible.
170 STANDARD FILE CONTEXT
172 SELinux defines the file context types for the update_modules, if you
174 wanted to store files with these types in a diffent paths, you need to
175 execute the semanage command to sepecify alternate labeling and then
176 use restorecon to put the labels on disk.
177 semanage fcontext -a -t update_modules_tmp_t '/srv/myupdate_mod‐
179 ules_content(/.*)?'
180 restorecon -R -v /srv/myupdate_modules_content
181 Note: SELinux often uses regular expressions to specify labels that
183 match multiple files.
184 The following file types are defined for update_modules:
186 update_modules_exec_t
190 - Set files with the update_modules_exec_t type, if you want to transi‐
192 tion an executable to the update_modules_t domain.
193 Paths:
196 /sbin/modules-update, /sbin/update-modules, /sbin/generate-mod‐
197 probe.conf
198 update_modules_tmp_t
201 - Set files with the update_modules_tmp_t type, if you want to store
203 update modules temporary files in the /tmp directories.
204 Note: File context can be temporarily modified with the chcon command.
208 If you want to permanently change the file context you need to use the
209 semanage fcontext command. This will modify the SELinux labeling data‐
210 base. You will need to use restorecon to apply the labels.
211
214 semanage fcontext can also be used to manipulate default file context
215 mappings.
216 semanage permissive can also be used to manipulate whether or not a
218 process type is permissive.
219 semanage module can also be used to enable/disable/install/remove pol‐
221 icy modules.
222 semanage boolean can also be used to manipulate the booleans
224 system-config-selinux is a GUI tool available to customize SELinux pol‐
227 icy settings.
228
231 This manual page was auto-generated using sepolicy manpage .
232
235 selinux(8), update_modules(8), semanage(8), restorecon(8), chcon(1) ,
236 setsebool(8)
237update_modules 15-06-03 update_modules_selinux(8)