chrome_sandbox_selinux(8)				   SELinux Policy chrome_sandbox				 chrome_sandbox_selinux(8)

NAME

       chrome_sandbox_selinux - Security Enhanced Linux Policy for the chrome_sandbox processes

DESCRIPTION

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

       The chrome_sandbox processes execute with the chrome_sandbox_t SELinux type. You can check if you have these processes running by executing
       the ps command with the -Z qualifier.

       For example:

       ps -eZ | grep chrome_sandbox_t

ENTRYPOINTS

       The chrome_sandbox_t SELinux type can be entered via the chrome_sandbox_exec_t file type.

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

       /opt/google/chrome/chrome-sandbox, /usr/lib/chromium-browser/chrome-sandbox

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 policy is very flexible allowing users to  setup  their
       chrome_sandbox processes in as secure a method as possible.

       The following process types are defined for chrome_sandbox:

       chrome_sandbox_t, chrome_sandbox_nacl_t

       Note:  semanage	permissive  -a	chrome_sandbox_t  can  be used to make the process type chrome_sandbox_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 policy is extremely flexible and has several  booleans  that
       allow you to manipulate the policy and run chrome_sandbox 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

       If you want to allow confined applications to use nscd shared memory, you must turn on the nscd_use_shm boolean. Disabled by default.

       setsebool -P nscd_use_shm 1

       If  you	want  to  allow  regular  users  direct dri device access, you must turn on the selinuxuser_direct_dri_enabled boolean. Enabled by
       default.

       setsebool -P selinuxuser_direct_dri_enabled 1

       If you want to allow unconfined users to transition to the chrome sandbox domains when running chrome-sandbox, you must turn on the  uncon-
       fined_chrome_sandbox_transition boolean. Enabled by default.

       setsebool -P unconfined_chrome_sandbox_transition 1

       If you want to support ecryptfs home directories, you must turn on the use_ecryptfs_home_dirs boolean. Disabled by default.

       setsebool -P use_ecryptfs_home_dirs 1

       If you want to support fusefs home directories, you must turn on the use_fusefs_home_dirs boolean. Disabled by default.

       setsebool -P use_fusefs_home_dirs 1

       If you want to support NFS home directories, you must turn on the use_nfs_home_dirs boolean. Disabled by default.

       setsebool -P use_nfs_home_dirs 1

       If you want to support SAMBA home directories, you must turn on the use_samba_home_dirs boolean. Disabled by default.

       setsebool -P use_samba_home_dirs 1

       If  you	want  to  allows clients to write to the X server shared memory segments, you must turn on the xserver_clients_write_xshm boolean.
       Disabled by default.

       setsebool -P xserver_clients_write_xshm 1

       If you want to support X userspace object manager, you must turn on the xserver_object_manager boolean. Enabled by default.

       setsebool -P xserver_object_manager 1

MANAGED FILES

       The SELinux process type chrome_sandbox_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.

       cgroup_t

	    /cgroup(/.*)?
	    /sys/fs/cgroup(/.*)?

       chrome_sandbox_home_t

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

       chrome_sandbox_tmp_t

       chrome_sandbox_tmpfs_t

       cifs_t

       home_cert_t

	    /root/.pki(/.*)?
	    /root/.cert(/.*)?
	    /home/[^/]*/.kde/share/apps/networkmanagement/certificates(/.*)?
	    /home/[^/]*/.pki(/.*)?
	    /home/[^/]*/.cert(/.*)?

       mozilla_home_t

	    /home/[^/]*/.lyx(/.*)?
	    /home/[^/]*/.java(/.*)?
	    /home/[^/]*/.adobe(/.*)?
	    /home/[^/]*/.gnash(/.*)?
	    /home/[^/]*/.webex(/.*)?
	    /home/[^/]*/.galeon(/.*)?
	    /home/[^/]*/.spicec(/.*)?
	    /home/[^/]*/.IBMERS(/.*)?
	    /home/[^/]*/POkemon.*(/.*)?
	    /home/[^/]*/.mozilla(/.*)?
	    /home/[^/]*/.phoenix(/.*)?
	    /home/[^/]*/.icedtea(/.*)?
	    /home/[^/]*/.netscape(/.*)?
	    /home/[^/]*/.quakelive(/.*)?
	    /home/[^/]*/.ICAClient(/.*)?
	    /home/[^/]*/.macromedia(/.*)?
	    /home/[^/]*/.thunderbird(/.*)?
	    /home/[^/]*/.gcjwebplugin(/.*)?
	    /home/[^/]*/.grl-podcasts(/.*)?
	    /home/[^/]*/.cache/mozilla(/.*)?
	    /home/[^/]*/.icedteaplugin(/.*)?
	    /home/[^/]*/zimbrauserdata(/.*)?
	    /home/[^/]*/.config/chromium(/.*)?
	    /home/[^/]*/.juniper_networks(/.*)?
	    /home/[^/]*/.cache/icedtea-web(/.*)?
	    /home/[^/]*/abc
	    /home/[^/]*/.gnashpluginrc

       nfs_t

       user_fonts_cache_t

	    /root/.fontconfig(/.*)?
	    /root/.fonts/auto(/.*)?
	    /root/.fonts.cache-.*
	    /home/[^/]*/.fontconfig(/.*)?
	    /home/[^/]*/.fonts/auto(/.*)?
	    /home/[^/]*/.fonts.cache-.*

       xserver_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 policy is very flexible allowing users to setup
       their chrome_sandbox processes in as secure a method as possible.

       STANDARD FILE CONTEXT

       SELinux defines the file context types for the chrome_sandbox, 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_exec_t '/srv/chrome_sandbox/content(/.*)?'
       restorecon -R -v /srv/mychrome_sandbox_content

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

       The following file types are defined for chrome_sandbox:

       chrome_sandbox_exec_t

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

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

       chrome_sandbox_home_t

       - Set files with the chrome_sandbox_home_t type, if you want to store chrome sandbox files in the users home directory.

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

       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

       chrome_sandbox_tmp_t

       - Set files with the chrome_sandbox_tmp_t type, if you want to store chrome sandbox temporary files in the /tmp directories.

       chrome_sandbox_tmpfs_t

       - Set files with the chrome_sandbox_tmpfs_t type, if you want to store chrome sandbox files on a tmpfs file system.

       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 database.	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 policy modules.

       semanage boolean can also be used to manipulate the booleans

       system-config-selinux is a GUI tool available to customize SELinux policy settings.

AUTHOR

       This manual page was auto-generated using sepolicy manpage .

SEE ALSO

       selinux(8),  chrome_sandbox(8),	semanage(8),  restorecon(8),  chcon(1),  sepolicy(8)   ,   setsebool(8),   chrome_sandbox_nacl_selinux(8),
       chrome_sandbox_nacl_selinux(8)

chrome_sandbox							     14-06-10						 chrome_sandbox_selinux(8)