sandbox_x_selinux(8)

1sandbox_x_selinux(8)       SELinux Policy sandbox_x       sandbox_x_selinux(8)
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NAME

6       sandbox_x_selinux  -  Security  Enhanced Linux Policy for the sandbox_x
7       processes
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DESCRIPTION

10       Security-Enhanced Linux secures the sandbox_x  processes  via  flexible
11       mandatory access control.
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13       The  sandbox_x processes execute with the sandbox_x_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 sandbox_x_t
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PROCESS TYPES

24       SELinux defines process types (domains) for each process running on the
25       system
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27       You can see the context of a process using the -Z option to ps
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29       Policy governs the access confined processes have  to  files.   SELinux
30       sandbox_x  policy  is very flexible allowing users to setup their sand‐
31       box_x processes in as secure a method as possible.
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33       The following process types are defined for sandbox_x:
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35       sandbox_xserver_t, sandbox_x_t, sandbox_x_client_t
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37       Note: semanage permissive -a  sandbox_x_t  can  be  used  to  make  the
38       process  type  sandbox_x_t  permissive. SELinux does not deny access to
39       permissive process types, but the AVC (SELinux  denials)  messages  are
40       still generated.
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MCS Constrained

44       The  SELinux  process  type sandbox_x_t is an MCS (Multi Category Secu‐
45       rity) constrained type.  Sometimes this separation is  referred  to  as
46       sVirt.  These types are usually used for securing multi-tenant environ‐
47       ments, such as virtualization, containers or separation of users.   The
48       tools used to launch MCS types, pick out a different MCS label for each
49       process group.
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51       For example one process might be  launched  with  sandbox_x_t:s0:c1,c2,
52       and  another  process  launched  with sandbox_x_t:s0:c3,c4. The SELinux
53       kernel only allows these processes can only write  to  content  with  a
54       matching  MCS  label,  or a MCS Label of s0. A process running with the
55       MCS level of s0:c1,c2 is not allowed to write to content with  the  MCS
56       label of s0:c3,c4
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BOOLEANS

60       SELinux  policy  is customizable based on least access required.  sand‐
61       box_x policy is extremely flexible and has several booleans that  allow
62       you to manipulate the policy and run sandbox_x with the tightest access
63       possible.
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67       If you want to deny user domains applications to map a memory region as
68       both  executable  and  writable,  this  is dangerous and the executable
69       should be reported in bugzilla, you must turn on the deny_execmem bool‐
70       ean. Enabled by default.
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72       setsebool -P deny_execmem 1
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MANAGED FILES

77       The  SELinux process type sandbox_x_t can manage files labeled with the
78       following file types.  The paths listed are the default paths for these
79       file types.  Note the processes UID still need to have DAC permissions.
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81       fusefs_t
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83            /var/run/user/[^/]*/gvfs
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85       mozilla_plugin_rw_t
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87            /usr/lib/mozilla/plugins-wrapped(/.*)?
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89       sandbox_file_t
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92       sandbox_x_client_tmpfs_t
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95       security_t
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97            /selinux
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COMMANDS

101       semanage  fcontext  can also be used to manipulate default file context
102       mappings.
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104       semanage permissive can also be used to manipulate  whether  or  not  a
105       process type is permissive.
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107       semanage  module can also be used to enable/disable/install/remove pol‐
108       icy modules.
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110       semanage boolean can also be used to manipulate the booleans
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113       system-config-selinux is a GUI tool available to customize SELinux pol‐
114       icy settings.
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AUTHOR

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