chrome_sandbox_nacl_selinux man page on Oracle

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chrome_sandbox_nacl_seSELinux)Policy chrome_sandchrome_sandbox_nacl_selinux(8)

NAME
       chrome_sandbox_nacl_selinux  -  Security	 Enhanced Linux Policy for the
       chrome_sandbox_nacl processes

DESCRIPTION
       Security-Enhanced Linux secures the chrome_sandbox_nacl	processes  via
       flexible mandatory access control.

       The   chrome_sandbox_nacl   processes  execute  with  the  chrome_sand‐
       box_nacl_t SELinux type. You can check if you have these processes run‐
       ning by executing the ps command with the -Z qualifier.

       For example:

       ps -eZ | grep chrome_sandbox_nacl_t

ENTRYPOINTS
       The  chrome_sandbox_nacl_t  SELinux  type can be entered via the bin_t,
       usr_t, chrome_sandbox_nacl_exec_t file types.

       The default entrypoint paths for the chrome_sandbox_nacl_t  domain  are
       the following:

       All  executeables  with the default executable label, usually stored in
       /usr/bin and /usr/sbin.	 /usr/.*,  /opt/.*,  /emul/.*,	/export(/.*)?,
       /usr/doc(/.*)?/lib(/.*)?,			   /usr/inclu.e(/.*)?,
       /usr/share/doc(/.*)?/README.*,	     /usr,	  /opt,		/emul,
       /opt/google/chrome/nacl_helper_bootstrap,	    /usr/lib/chromium-
       browser/nacl_helper_bootstrap

PROCESS TYPES
       SELinux defines process types (domains) for each process running on the
       system

       You can see the context of a process using the -Z option to ps

       Policy  governs	the  access confined processes have to files.  SELinux
       chrome_sandbox_nacl policy is very flexible  allowing  users  to	 setup
       their chrome_sandbox_nacl processes in as secure a method as possible.

       The following process types are defined for chrome_sandbox_nacl:

       chrome_sandbox_nacl_t

       Note:  semanage permissive -a chrome_sandbox_nacl_t can be used to make
       the process type chrome_sandbox_nacl_t  permissive.  SELinux  does  not
       deny  access to permissive process types, but the AVC (SELinux denials)
       messages are still generated.

BOOLEANS
       SELinux	policy	is  customizable  based	 on  least  access   required.
       chrome_sandbox_nacl  policy is extremely flexible and has several bool‐
       eans that allow you to  manipulate  the	policy	and  run  chrome_sand‐
       box_nacl with the tightest access possible.

       If  you	want  to deny any process from ptracing or debugging any other
       processes, you  must  turn  on  the  deny_ptrace	 boolean.  Enabled  by
       default.

       setsebool -P deny_ptrace 1

       If you want to allow all domains to use other domains file descriptors,
       you must turn on the domain_fd_use boolean. Enabled by default.

       setsebool -P domain_fd_use 1

       If you want to allow all domains to have the kernel load	 modules,  you
       must  turn  on  the  domain_kernel_load_modules	boolean.  Disabled  by
       default.

       setsebool -P domain_kernel_load_modules 1

       If you want to allow all domains to execute in fips_mode, you must turn
       on the fips_mode boolean. Enabled by default.

       setsebool -P fips_mode 1

       If you want to enable reading of urandom for all domains, you must turn
       on the global_ssp boolean. Disabled by default.

       setsebool -P global_ssp 1

MANAGED FILES
       The SELinux process type chrome_sandbox_nacl_t can manage files labeled
       with  the following file types.	The paths listed are the default paths
       for these file types.  Note the processes UID still need	 to  have  DAC
       permissions.

       chrome_sandbox_home_t

	    /home/[^/]*/.cache/chromium(/.*)?
	    /home/[^/]*/.cache/google-chrome(/.*)?

       chrome_sandbox_tmpfs_t

FILE CONTEXTS
       SELinux requires files to have an extended attribute to define the file
       type.

       You can see the context of a file using the -Z option to ls

       Policy governs the access  confined  processes  have  to	 these	files.
       SELinux	chrome_sandbox_nacl  policy is very flexible allowing users to
       setup their chrome_sandbox_nacl processes in as secure a method as pos‐
       sible.

       STANDARD FILE CONTEXT

       SELinux	defines the file context types for the chrome_sandbox_nacl, if
       you wanted to store files with these types in a diffent paths, you need
       to execute the semanage command to sepecify alternate labeling and then
       use restorecon to put the labels on disk.

       semanage fcontext -a -t	chrome_sandbox_nacl_exec_t  '/srv/chrome_sand‐
       box_nacl/content(/.*)?'
       restorecon -R -v /srv/mychrome_sandbox_nacl_content

       Note:  SELinux  often  uses  regular expressions to specify labels that
       match multiple files.

       The following file types are defined for chrome_sandbox_nacl:

       chrome_sandbox_nacl_exec_t

       - Set files with the chrome_sandbox_nacl_exec_t type, if	 you  want  to
       transition an executable to the chrome_sandbox_nacl_t domain.

       Paths:
	    /opt/google/chrome/nacl_helper_bootstrap,	    /usr/lib/chromium-
	    browser/nacl_helper_bootstrap

       Note: File context can be temporarily modified with the chcon  command.
       If  you want to permanently change the file context you need to use the
       semanage fcontext command.  This will modify the SELinux labeling data‐
       base.  You will need to use restorecon to apply the labels.

COMMANDS
       semanage	 fcontext  can also be used to manipulate default file context
       mappings.

       semanage permissive can also be used to manipulate  whether  or	not  a
       process type is permissive.

       semanage	 module can also be used to enable/disable/install/remove pol‐
       icy modules.

       semanage boolean can also be used to manipulate the booleans

       system-config-selinux is a GUI tool available to customize SELinux pol‐
       icy settings.

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

SEE ALSO
       selinux(8),    chrome_sandbox_nacl(8),	 semanage(8),	restorecon(8),
       chcon(1), sepolicy(8) , setsebool(8)

chrome_sandbox_nacl		   14-05-08	chrome_sandbox_nacl_selinux(8)
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