lockdev_selinux(8)

1lockdev_selinux(8)          SELinux Policy lockdev          lockdev_selinux(8)
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NAME

6       lockdev_selinux  -  Security Enhanced Linux Policy for the lockdev pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux secures  the  lockdev  processes  via  flexible
11       mandatory access control.
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13       The  lockdev processes execute with the lockdev_t SELinux type. You can
14       check if you have these processes running by executing the  ps  command
15       with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep lockdev_t
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ENTRYPOINTS

24       The  lockdev_t  SELinux type can be entered via the lockdev_exec_t file
25       type.
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27       The default entrypoint paths for the lockdev_t domain are  the  follow‐
28       ing:
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30       /usr/sbin/lockdev
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PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
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36       You can see the context of a process using the -Z option to ps
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38       Policy governs the access confined processes have  to  files.   SELinux
39       lockdev  policy  is very flexible allowing users to setup their lockdev
40       processes in as secure a method as possible.
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42       The following process types are defined for lockdev:
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44       lockdev_t
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46       Note: semanage permissive -a lockdev_t can be used to make the  process
47       type  lockdev_t  permissive. SELinux does not deny access to permissive
48       process types, but the AVC (SELinux denials) messages are still  gener‐
49       ated.
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BOOLEANS

53       SELinux policy is customizable based on least access required.  lockdev
54       policy is extremely flexible and has several booleans that allow you to
55       manipulate  the  policy and run lockdev with the tightest access possi‐
56       ble.
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60       If you want to deny any process from ptracing or  debugging  any  other
61       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
62       default.
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64       setsebool -P deny_ptrace 1
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68       If you want to allow any process  to  mmap  any  file  on  system  with
69       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
70       ean. Enabled by default.
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72       setsebool -P domain_can_mmap_files 1
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76       If you want to allow all domains write to kmsg_device, while kernel  is
77       executed  with  systemd.log_target=kmsg parameter, you must turn on the
78       domain_can_write_kmsg boolean. Disabled by default.
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80       setsebool -P domain_can_write_kmsg 1
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84       If you want to allow all domains to use other domains file descriptors,
85       you must turn on the domain_fd_use boolean. Enabled by default.
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87       setsebool -P domain_fd_use 1
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91       If  you  want to allow all domains to have the kernel load modules, you
92       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
93       default.
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95       setsebool -P domain_kernel_load_modules 1
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99       If you want to allow all domains to execute in fips_mode, you must turn
100       on the fips_mode boolean. Enabled by default.
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102       setsebool -P fips_mode 1
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106       If you want to enable reading of urandom for all domains, you must turn
107       on the global_ssp boolean. Disabled by default.
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109       setsebool -P global_ssp 1
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MANAGED FILES

114       The  SELinux  process  type lockdev_t can manage files labeled with the
115       following file types.  The paths listed are the default paths for these
116       file types.  Note the processes UID still need to have DAC permissions.
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118       lockdev_lock_t
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120            /var/lock/lockdev(/.*)?
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FILE CONTEXTS

124       SELinux requires files to have an extended attribute to define the file
125       type.
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127       You can see the context of a file using the -Z option to ls
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129       Policy governs the access  confined  processes  have  to  these  files.
130       SELinux  lockdev  policy is very flexible allowing users to setup their
131       lockdev processes in as secure a method as possible.
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133       STANDARD FILE CONTEXT
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135       SELinux defines the file context types for the lockdev, if  you  wanted
136       to store files with these types in a diffent paths, you need to execute
137       the semanage command  to  sepecify  alternate  labeling  and  then  use
138       restorecon to put the labels on disk.
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140       semanage fcontext -a -t lockdev_lock_t '/srv/mylockdev_content(/.*)?'
141       restorecon -R -v /srv/mylockdev_content
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143       Note:  SELinux  often  uses  regular expressions to specify labels that
144       match multiple files.
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146       The following file types are defined for lockdev:
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150       lockdev_exec_t
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152       - Set files with the lockdev_exec_t type, if you want to transition  an
153       executable to the lockdev_t domain.
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157       lockdev_lock_t
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159       -  Set  files  with  the  lockdev_lock_t type, if you want to treat the
160       files as lockdev lock data, stored under the /var/lock directory
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164       Note: File context can be temporarily modified with the chcon  command.
165       If  you want to permanently change the file context you need to use the
166       semanage fcontext command.  This will modify the SELinux labeling data‐
167       base.  You will need to use restorecon to apply the labels.
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COMMANDS

171       semanage  fcontext  can also be used to manipulate default file context
172       mappings.
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174       semanage permissive can also be used to manipulate  whether  or  not  a
175       process type is permissive.
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177       semanage  module can also be used to enable/disable/install/remove pol‐
178       icy modules.
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180       semanage boolean can also be used to manipulate the booleans
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183       system-config-selinux is a GUI tool available to customize SELinux pol‐
184       icy settings.
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AUTHOR

188       This manual page was auto-generated using sepolicy manpage .
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