1readahead_selinux(8) SELinux Policy readahead readahead_selinux(8)
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6 readahead_selinux - Security Enhanced Linux Policy for the readahead
7 processes
8
10 Security-Enhanced Linux secures the readahead processes via flexible
11 mandatory access control.
12 The readahead processes execute with the readahead_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 readahead_t
20
24 The readahead_t SELinux type can be entered via the readahead_exec_t
25 file type.
26 The default entrypoint paths for the readahead_t domain are the follow‐
28 ing:
29 /sbin/readahead.*, /usr/sbin/readahead.*
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 readahead policy is very flexible allowing users to setup their reada‐
40 head processes in as secure a method as possible.
41 The following process types are defined for readahead:
43 readahead_t
45 Note: semanage permissive -a readahead_t can be used to make the
47 process type readahead_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. reada‐
54 head policy is extremely flexible and has several booleans that allow
55 you to manipulate the policy and run readahead with the tightest access
56 possible.
57 If you want to allow all daemons to write corefiles to /, you must turn
61 on the allow_daemons_dump_core boolean. Disabled by default.
62 setsebool -P allow_daemons_dump_core 1
64 If you want to allow all daemons to use tcp wrappers, you must turn on
68 the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
69 setsebool -P allow_daemons_use_tcp_wrapper 1
71 If you want to allow all daemons the ability to read/write terminals,
75 you must turn on the allow_daemons_use_tty boolean. Disabled by
76 default.
77 setsebool -P allow_daemons_use_tty 1
79 If you want to allow all domains to use other domains file descriptors,
83 you must turn on the allow_domain_fd_use boolean. Enabled by default.
84 setsebool -P allow_domain_fd_use 1
86 If you want to allow sysadm to debug or ptrace all processes, you must
90 turn on the allow_ptrace boolean. Disabled by default.
91 setsebool -P allow_ptrace 1
93 If you want to enable cluster mode for daemons, you must turn on the
97 daemons_enable_cluster_mode boolean. Disabled by default.
98 setsebool -P daemons_enable_cluster_mode 1
100 If you want to allow all domains to have the kernel load modules, you
104 must turn on the domain_kernel_load_modules boolean. Disabled by
105 default.
106 setsebool -P domain_kernel_load_modules 1
108 If you want to allow all domains to execute in fips_mode, you must turn
112 on the fips_mode boolean. Enabled by default.
113 setsebool -P fips_mode 1
115 If you want to enable reading of urandom for all domains, you must turn
119 on the global_ssp boolean. Disabled by default.
120 setsebool -P global_ssp 1
122 If you want to enable support for upstart as the init program, you must
126 turn on the init_upstart boolean. Enabled by default.
127 setsebool -P init_upstart 1
129
133 The SELinux process type readahead_t can manage files labeled with the
134 following file types. The paths listed are the default paths for these
135 file types. Note the processes UID still need to have DAC permissions.
136 cluster_conf_t
138 /etc/cluster(/.*)?
140 cluster_var_lib_t
142 /var/lib(64)?/openais(/.*)?
144 /var/lib(64)?/pengine(/.*)?
145 /var/lib(64)?/corosync(/.*)?
146 /usr/lib(64)?/heartbeat(/.*)?
147 /var/lib(64)?/heartbeat(/.*)?
148 /var/lib(64)?/pacemaker(/.*)?
149 /var/lib/cluster(/.*)?
150 cluster_var_run_t
152 /var/run/crm(/.*)?
154 /var/run/cman_.*
155 /var/run/rsctmp(/.*)?
156 /var/run/aisexec.*
157 /var/run/heartbeat(/.*)?
158 /var/run/cpglockd.pid
159 /var/run/corosync.pid
160 /var/run/rgmanager.pid
161 /var/run/cluster/rgmanager.sk
162 etc_runtime_t
164 /[^/]+
166 /etc/mtab.*
167 /etc/blkid(/.*)?
168 /etc/nologin.*
169 /etc/zipl.conf.*
170 /etc/smartd.conf.*
171 /etc/.fstab.hal..+
172 /etc/sysconfig/ip6?tables.save
173 /halt
174 /etc/motd
175 /fastboot
176 /poweroff
177 /etc/issue
178 /etc/cmtab
179 /forcefsck
180 /.autofsck
181 /.suspended
182 /fsckoptions
183 /etc/HOSTNAME
184 /.autorelabel
185 /etc/securetty
186 /etc/nohotplug
187 /etc/issue.net
188 /etc/killpower
189 /etc/ioctl.save
190 /etc/reader.conf
191 /etc/fstab.REVOKE
192 /etc/mtab.fuselock
193 /etc/network/ifstate
194 /etc/sysconfig/hwconf
195 /etc/ptal/ptal-printd-like
196 /etc/xorg.conf.d/00-system-setup-keyboard.conf
197 initrc_tmp_t
199 mnt_t
202 /mnt(/[^/]*)
204 /mnt(/[^/]*)?
205 /rhev(/[^/]*)?
206 /media(/[^/]*)
207 /media(/[^/]*)?
208 /etc/rhgb(/.*)?
209 /media/.hal-.*
210 /net
211 /afs
212 /rhev
213 /misc
214 readahead_var_lib_t
216 /var/lib/readahead(/.*)?
218 readahead_var_run_t
220 root_t
223 /
225 /initrd
226 tmp_t
228 /tmp
230 /usr/tmp
231 /var/tmp
232 /tmp-inst
233 /var/tmp-inst
234 /var/tmp/vi.recover
235
238 SELinux requires files to have an extended attribute to define the file
239 type.
240 You can see the context of a file using the -Z option to ls
242 Policy governs the access confined processes have to these files.
244 SELinux readahead policy is very flexible allowing users to setup their
245 readahead processes in as secure a method as possible.
246 STANDARD FILE CONTEXT
248 SELinux defines the file context types for the readahead, if you wanted
250 to store files with these types in a diffent paths, you need to execute
251 the semanage command to sepecify alternate labeling and then use
252 restorecon to put the labels on disk.
253 semanage fcontext -a -t readahead_var_run_t '/srv/myreadahead_con‐
255 tent(/.*)?'
256 restorecon -R -v /srv/myreadahead_content
257 Note: SELinux often uses regular expressions to specify labels that
259 match multiple files.
260 The following file types are defined for readahead:
262 readahead_exec_t
266 - Set files with the readahead_exec_t type, if you want to transition
268 an executable to the readahead_t domain.
269 Paths:
272 /sbin/readahead.*, /usr/sbin/readahead.*
273 readahead_var_lib_t
276 - Set files with the readahead_var_lib_t type, if you want to store the
278 readahead files under the /var/lib directory.
279 readahead_var_run_t
283 - Set files with the readahead_var_run_t type, if you want to store the
285 readahead files under the /run or /var/run directory.
286 Note: File context can be temporarily modified with the chcon command.
290 If you want to permanently change the file context you need to use the
291 semanage fcontext command. This will modify the SELinux labeling data‐
292 base. You will need to use restorecon to apply the labels.
293
296 semanage fcontext can also be used to manipulate default file context
297 mappings.
298 semanage permissive can also be used to manipulate whether or not a
300 process type is permissive.
301 semanage module can also be used to enable/disable/install/remove pol‐
303 icy modules.
304 semanage boolean can also be used to manipulate the booleans
306 system-config-selinux is a GUI tool available to customize SELinux pol‐
309 icy settings.
310
313 This manual page was auto-generated using sepolicy manpage .
314
317 selinux(8), readahead(8), semanage(8), restorecon(8), chcon(1) , setse‐
318 bool(8)
319readahead 15-06-03 readahead_selinux(8)