1readahead_selinux(8)       SELinux Policy readahead       readahead_selinux(8)
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NAME

6       readahead_selinux  -  Security  Enhanced Linux Policy for the readahead
7       processes
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DESCRIPTION

10       Security-Enhanced Linux secures the readahead  processes  via  flexible
11       mandatory access control.
12
13       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.
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17       For example:
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19       ps -eZ | grep readahead_t
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ENTRYPOINTS

24       The  readahead_t  SELinux  type can be entered via the readahead_exec_t
25       file type.
26
27       The default entrypoint paths for the readahead_t domain are the follow‐
28       ing:
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30       /sbin/readahead.*,   /usr/sbin/readahead.*,   /usr/lib/systemd/systemd-
31       readahead.*
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PROCESS TYPES

34       SELinux defines process types (domains) for each process running on the
35       system
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37       You can see the context of a process using the -Z option to ps
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39       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.
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43       The following process types are defined for readahead:
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45       readahead_t
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47       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.
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52

BOOLEANS

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.
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61       If you want to allow all domains to execute in fips_mode, you must turn
62       on the fips_mode boolean. Enabled by default.
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64       setsebool -P fips_mode 1
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MANAGED FILES

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.
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73       etc_runtime_t
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75            /[^/]+
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/sysconfig/iptables.save
100            /etc/xorg.conf.d/00-system-setup-keyboard.conf
101            /etc/X11/xorg.conf.d/00-system-setup-keyboard.conf
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103       readahead_var_lib_t
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105            /var/lib/readahead(/.*)?
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107       readahead_var_run_t
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109            /var/run/readahead.*
110            /dev/.systemd/readahead(/.*)?
111            /var/run/systemd/readahead(/.*)?
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113       sysfs_t
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115            /sys(/.*)?
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117

FILE CONTEXTS

119       SELinux requires files to have an extended attribute to define the file
120       type.
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122       You can see the context of a file using the -Z option to ls
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124       Policy  governs  the  access  confined  processes  have to these files.
125       SELinux readahead policy is very flexible allowing users to setup their
126       readahead processes in as secure a method as possible.
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128       STANDARD FILE CONTEXT
129
130       SELinux defines the file context types for the readahead, if you wanted
131       to store files with these types in a diffent paths, you need to execute
132       the  semanage  command  to  sepecify  alternate  labeling  and then use
133       restorecon to put the labels on disk.
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135       semanage  fcontext  -a  -t  readahead_var_run_t  '/srv/myreadahead_con‐
136       tent(/.*)?'
137       restorecon -R -v /srv/myreadahead_content
138
139       Note:  SELinux  often  uses  regular expressions to specify labels that
140       match multiple files.
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142       The following file types are defined for readahead:
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146       readahead_exec_t
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148       - Set files with the readahead_exec_t type, if you want  to  transition
149       an executable to the readahead_t domain.
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151
152       Paths:
153            /sbin/readahead.*,   /usr/sbin/readahead.*,  /usr/lib/systemd/sys‐
154            temd-readahead.*
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156
157       readahead_var_lib_t
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159       - Set files with the readahead_var_lib_t type, if you want to store the
160       readahead files under the /var/lib directory.
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164       readahead_var_run_t
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166       - Set files with the readahead_var_run_t type, if you want to store the
167       readahead files under the /run or /var/run directory.
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169
170       Paths:
171            /var/run/readahead.*, /dev/.systemd/readahead(/.*)?, /var/run/sys‐
172            temd/readahead(/.*)?
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174
175       Note:  File context can be temporarily modified with the chcon command.
176       If you want to permanently change the file context you need to use  the
177       semanage fcontext command.  This will modify the SELinux labeling data‐
178       base.  You will need to use restorecon to apply the labels.
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COMMANDS

182       semanage fcontext can also be used to manipulate default  file  context
183       mappings.
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185       semanage  permissive  can  also  be used to manipulate whether or not a
186       process type is permissive.
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188       semanage module can also be used to enable/disable/install/remove  pol‐
189       icy modules.
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191       semanage boolean can also be used to manipulate the booleans
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194       system-config-selinux is a GUI tool available to customize SELinux pol‐
195       icy settings.
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AUTHOR

199       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

203       selinux(8), readahead(8), semanage(8), restorecon(8), chcon(1),  sepol‐
204       icy(8), setsebool(8)
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208readahead                          19-05-30               readahead_selinux(8)
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