1readahead_selinux(8) SELinux Policy readahead readahead_selinux(8)
2
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.*, /usr/lib/systemd/systemd-
31 readahead.*
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 readahead policy is very flexible allowing users to setup their reada‐
41 head processes in as secure a method as possible.
42 The following process types are defined for readahead:
44 readahead_t
46 Note: semanage permissive -a readahead_t can be used to make the
48 process type readahead_t permissive. SELinux does not deny access to
49 permissive process types, but the AVC (SELinux denials) messages are
50 still generated.
51
54 SELinux policy is customizable based on least access required. reada‐
55 head policy is extremely flexible and has several booleans that allow
56 you to manipulate the policy and run readahead with the tightest access
57 possible.
58 If you want to allow all domains to execute in fips_mode, you must turn
62 on the fips_mode boolean. Enabled by default.
63 setsebool -P fips_mode 1
65
69 The SELinux process type readahead_t can manage files labeled with the
70 following file types. The paths listed are the default paths for these
71 file types. Note the processes UID still need to have DAC permissions.
72 etc_runtime_t
74 /[^/]+
76 /etc/mtab.*
77 /etc/blkid(/.*)?
78 /etc/nologin.*
79 /etc/.fstab.hal..+
80 /halt
81 /fastboot
82 /poweroff
83 /.autofsck
84 /etc/cmtab
85 /forcefsck
86 /.suspended
87 /fsckoptions
88 /.autorelabel
89 /etc/.updated
90 /var/.updated
91 /etc/killpower
92 /etc/nohotplug
93 /etc/securetty
94 /etc/ioctl.save
95 /etc/fstab.REVOKE
96 /etc/network/ifstate
97 /etc/sysconfig/hwconf
98 /etc/ptal/ptal-printd-like
99 /etc/xorg.conf.d/00-system-setup-keyboard.conf
100 /etc/X11/xorg.conf.d/00-system-setup-keyboard.conf
101 readahead_var_lib_t
103 /var/lib/readahead(/.*)?
105 readahead_var_run_t
107 /var/run/readahead.*
109 /dev/.systemd/readahead(/.*)?
110 /var/run/systemd/readahead(/.*)?
111 sysfs_t
113 /sys(/.*)?
115
118 SELinux requires files to have an extended attribute to define the file
119 type.
120 You can see the context of a file using the -Z option to ls
122 Policy governs the access confined processes have to these files.
124 SELinux readahead policy is very flexible allowing users to setup their
125 readahead processes in as secure a method as possible.
126 STANDARD FILE CONTEXT
128 SELinux defines the file context types for the readahead, if you wanted
130 to store files with these types in a diffent paths, you need to execute
131 the semanage command to sepecify alternate labeling and then use
132 restorecon to put the labels on disk.
133 semanage fcontext -a -t readahead_var_run_t '/srv/myreadahead_con‐
135 tent(/.*)?'
136 restorecon -R -v /srv/myreadahead_content
137 Note: SELinux often uses regular expressions to specify labels that
139 match multiple files.
140 The following file types are defined for readahead:
142 readahead_exec_t
146 - Set files with the readahead_exec_t type, if you want to transition
148 an executable to the readahead_t domain.
149 Paths:
152 /sbin/readahead.*, /usr/sbin/readahead.*, /usr/lib/systemd/sys‐
153 temd-readahead.*
154 readahead_var_lib_t
157 - Set files with the readahead_var_lib_t type, if you want to store the
159 readahead files under the /var/lib directory.
160 readahead_var_run_t
164 - Set files with the readahead_var_run_t type, if you want to store the
166 readahead files under the /run or /var/run directory.
167 Paths:
170 /var/run/readahead.*, /dev/.systemd/readahead(/.*)?, /var/run/sys‐
171 temd/readahead(/.*)?
172 Note: File context can be temporarily modified with the chcon command.
175 If you want to permanently change the file context you need to use the
176 semanage fcontext command. This will modify the SELinux labeling data‐
177 base. You will need to use restorecon to apply the labels.
178
181 semanage fcontext can also be used to manipulate default file context
182 mappings.
183 semanage permissive can also be used to manipulate whether or not a
185 process type is permissive.
186 semanage module can also be used to enable/disable/install/remove pol‐
188 icy modules.
189 semanage boolean can also be used to manipulate the booleans
191 system-config-selinux is a GUI tool available to customize SELinux pol‐
194 icy settings.
195
198 This manual page was auto-generated using sepolicy manpage .
199
202 selinux(8), readahead(8), semanage(8), restorecon(8), chcon(1), sepol‐
203 icy(8), setsebool(8)
204readahead 19-12-02 readahead_selinux(8)