update_modules_selinux(8)

1update_modules_selinux(8)SELinux Policy update_modulesupdate_modules_selinux(8)
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NAME

6       update_modules_selinux   -  Security  Enhanced  Linux  Policy  for  the
7       update_modules processes
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DESCRIPTION

10       Security-Enhanced Linux secures the update_modules processes via flexi‐
11       ble mandatory access control.
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13       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.
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17       For example:
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19       ps -eZ | grep update_modules_t
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ENTRYPOINTS

24       The  update_modules_t  SELinux  type can be entered via the update_mod‐
25       ules_exec_t file type.
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27       The default entrypoint paths for the update_modules_t  domain  are  the
28       following:
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30       /sbin/modules-update,  /sbin/update-modules,  /usr/sbin/modules-update,
31       /usr/sbin/update-modules, /sbin/generate-modprobe.conf,  /usr/sbin/gen‐
32       erate-modprobe.conf
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PROCESS TYPES

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

55       SELinux   policy  is  customizable  based  on  least  access  required.
56       update_modules policy is extremely flexible and  has  several  booleans
57       that allow you to manipulate the policy and run update_modules with the
58       tightest access possible.
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62       If you want to allow all daemons the ability to  read/write  terminals,
63       you must turn on the daemons_use_tty boolean. Disabled by default.
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65       setsebool -P daemons_use_tty 1
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69       If  you  want  to deny any process from ptracing or debugging any other
70       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
71       default.
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73       setsebool -P deny_ptrace 1
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77       If  you  want  to  allow  any  process  to mmap any file on system with
78       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
79       ean. Enabled by default.
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81       setsebool -P domain_can_mmap_files 1
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85       If  you want to allow all domains write to kmsg_device, while kernel is
86       executed with systemd.log_target=kmsg parameter, you must turn  on  the
87       domain_can_write_kmsg boolean. Disabled by default.
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89       setsebool -P domain_can_write_kmsg 1
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93       If you want to allow all domains to use other domains file descriptors,
94       you must turn on the domain_fd_use boolean. Enabled by default.
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96       setsebool -P domain_fd_use 1
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100       If you want to allow all domains to have the kernel load  modules,  you
101       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
102       default.
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104       setsebool -P domain_kernel_load_modules 1
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108       If you want to allow all domains to execute in fips_mode, you must turn
109       on the fips_mode boolean. Enabled by default.
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111       setsebool -P fips_mode 1
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115       If you want to enable reading of urandom for all domains, you must turn
116       on the global_ssp boolean. Disabled by default.
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118       setsebool -P global_ssp 1
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MANAGED FILES

123       The SELinux process type update_modules_t can manage files labeled with
124       the  following  file types.  The paths listed are the default paths for
125       these file types.  Note the processes UID still need to have  DAC  per‐
126       missions.
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128       modules_conf_t
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130            /etc/modprobe.d(/.*)?
131            /etc/modules.conf.*
132            /etc/modprobe.conf.*
133            /lib/modules/modprobe.conf
134            /usr/lib/modules/modprobe.conf
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136       modules_dep_t
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139       update_modules_tmp_t
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FILE CONTEXTS

144       SELinux requires files to have an extended attribute to define the file
145       type.
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147       You can see the context of a file using the -Z option to ls
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149       Policy governs the access  confined  processes  have  to  these  files.
150       SELinux  update_modules policy is very flexible allowing users to setup
151       their update_modules processes in as secure a method as possible.
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153       STANDARD FILE CONTEXT
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155       SELinux defines the file context types for the update_modules,  if  you
156       wanted  to store files with these types in a diffent paths, you need to
157       execute the semanage command to sepecify alternate  labeling  and  then
158       use restorecon to put the labels on disk.
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160       semanage   fcontext   -a  -t  update_modules_tmp_t  '/srv/myupdate_mod‐
161       ules_content(/.*)?'
162       restorecon -R -v /srv/myupdate_modules_content
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164       Note: SELinux often uses regular expressions  to  specify  labels  that
165       match multiple files.
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167       The following file types are defined for update_modules:
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171       update_modules_exec_t
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173       - Set files with the update_modules_exec_t type, if you want to transi‐
174       tion an executable to the update_modules_t domain.
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177       Paths:
178            /sbin/modules-update,   /sbin/update-modules,   /usr/sbin/modules-
179            update,   /usr/sbin/update-modules,  /sbin/generate-modprobe.conf,
180            /usr/sbin/generate-modprobe.conf
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183       update_modules_tmp_t
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185       - Set files with the update_modules_tmp_t type, if you  want  to  store
186       update modules temporary files in the /tmp directories.
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190       Note:  File context can be temporarily modified with the chcon command.
191       If you want to permanently change the file context you need to use  the
192       semanage fcontext command.  This will modify the SELinux labeling data‐
193       base.  You will need to use restorecon to apply the labels.
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COMMANDS

197       semanage fcontext can also be used to manipulate default  file  context
198       mappings.
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200       semanage  permissive  can  also  be used to manipulate whether or not a
201       process type is permissive.
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203       semanage module can also be used to enable/disable/install/remove  pol‐
204       icy modules.
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206       semanage boolean can also be used to manipulate the booleans
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209       system-config-selinux is a GUI tool available to customize SELinux pol‐
210       icy settings.
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AUTHOR

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