1unconfined_mount_selinux(S8E)Linux Policy unconfined_mouunnctonfined_mount_selinux(8)
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NAME

6       unconfined_mount_selinux  -  Security  Enhanced  Linux  Policy  for the
7       unconfined_mount processes
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DESCRIPTION

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

24       The unconfined_mount_t SELinux type can be entered via the mount_exec_t
25       file type.
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27       The default entrypoint paths for the unconfined_mount_t domain are  the
28       following:
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30       /bin/mount.*,     /bin/umount.*,     /sbin/mount.*,     /sbin/umount.*,
31       /usr/bin/mount.*,         /usr/bin/umount.*,         /usr/sbin/mount.*,
32       /usr/sbin/umount.*
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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       unconfined_mount  policy is very flexible allowing users to setup their
42       unconfined_mount processes in as secure a method as possible.
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44       The following process types are defined for unconfined_mount:
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46       unconfined_mount_t
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48       Note: semanage permissive -a unconfined_mount_t can be used to make the
49       process  type  unconfined_mount_t  permissive.  SELinux  does  not deny
50       access to permissive process types, but the AVC (SELinux denials)  mes‐
51       sages are still generated.
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BOOLEANS

55       SELinux  policy is customizable based on least access required.  uncon‐
56       fined_mount policy is extremely flexible and has several booleans  that
57       allow  you  to  manipulate the policy and run unconfined_mount with the
58       tightest access possible.
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62       If you want to deny user domains applications to map a memory region as
63       both  executable  and  writable,  this  is dangerous and the executable
64       should be reported in bugzilla, you must turn on the deny_execmem bool‐
65       ean. Enabled by default.
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67       setsebool -P deny_execmem 1
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71       If  you  want  to deny any process from ptracing or debugging any other
72       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
73       default.
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75       setsebool -P deny_ptrace 1
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79       If  you  want  to  allow  any  process  to mmap any file on system with
80       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
81       ean. Enabled by default.
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83       setsebool -P domain_can_mmap_files 1
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87       If  you want to allow all domains write to kmsg_device, while kernel is
88       executed with systemd.log_target=kmsg parameter, you must turn  on  the
89       domain_can_write_kmsg boolean. Disabled by default.
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91       setsebool -P domain_can_write_kmsg 1
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95       If you want to allow all domains to use other domains file descriptors,
96       you must turn on the domain_fd_use boolean. Enabled by default.
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98       setsebool -P domain_fd_use 1
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102       If you want to allow all domains to have the kernel load  modules,  you
103       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
104       default.
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106       setsebool -P domain_kernel_load_modules 1
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110       If you want to allow all domains to execute in fips_mode, you must turn
111       on the fips_mode boolean. Enabled by default.
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113       setsebool -P fips_mode 1
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117       If you want to enable reading of urandom for all domains, you must turn
118       on the global_ssp boolean. Disabled by default.
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120       setsebool -P global_ssp 1
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123
124       If you want to control the ability to mmap a low area  of  the  address
125       space,  as  configured  by /proc/sys/vm/mmap_min_addr, you must turn on
126       the mmap_low_allowed boolean. Disabled by default.
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128       setsebool -P mmap_low_allowed 1
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132       If you want to disable kernel module loading,  you  must  turn  on  the
133       secure_mode_insmod boolean. Enabled by default.
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135       setsebool -P secure_mode_insmod 1
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138
139       If  you want to boolean to determine whether the system permits loading
140       policy, setting enforcing mode, and changing boolean values.  Set  this
141       to  true  and  you  have to reboot to set it back, you must turn on the
142       secure_mode_policyload boolean. Enabled by default.
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144       setsebool -P secure_mode_policyload 1
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148       If you want to allow unconfined executables to make their  heap  memory
149       executable.   Doing  this  is  a  really bad idea. Probably indicates a
150       badly coded executable, but could indicate an attack.  This  executable
151       should   be   reported  in  bugzilla,  you  must  turn  on  the  selin‐
152       uxuser_execheap boolean. Disabled by default.
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154       setsebool -P selinuxuser_execheap 1
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158       If you want to  allow  all  unconfined  executables  to  use  libraries
159       requiring  text  relocation  that  are not labeled textrel_shlib_t, you
160       must turn on the selinuxuser_execmod boolean. Enabled by default.
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162       setsebool -P selinuxuser_execmod 1
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166       If you want to allow unconfined executables to make  their  stack  exe‐
167       cutable.   This  should  never, ever be necessary. Probably indicates a
168       badly coded executable, but could indicate an attack.  This  executable
169       should  be reported in bugzilla, you must turn on the selinuxuser_exec‐
170       stack boolean. Enabled by default.
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172       setsebool -P selinuxuser_execstack 1
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175
176       If you want to support X userspace object manager, you must turn on the
177       xserver_object_manager boolean. Enabled by default.
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179       setsebool -P xserver_object_manager 1
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MANAGED FILES

184       The  SELinux  process  type unconfined_mount_t can manage files labeled
185       with the following file types.  The paths listed are the default  paths
186       for  these  file  types.  Note the processes UID still need to have DAC
187       permissions.
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189       file_type
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191            all files on the system
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COMMANDS

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

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

216       selinux(8), unconfined_mount(8), semanage(8), restorecon(8),  chcon(1),
217       sepolicy(8) , setsebool(8)
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221unconfined_mount                   19-04-25        unconfined_mount_selinux(8)
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