xauth_selinux(8)					       SELinux Policy xauth						  xauth_selinux(8)

NAME

       xauth_selinux - Security Enhanced Linux Policy for the xauth processes

DESCRIPTION

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

       The  xauth  processes  execute with the xauth_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 xauth_t

ENTRYPOINTS

       The xauth_t SELinux type can be entered via the xauth_exec_t file type.

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

       /usr/bin/xauth, /usr/X11R6/bin/xauth

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 xauth policy is very flexible allowing users to setup their xauth pro-
       cesses in as secure a method as possible.

       The following process types are defined for xauth:

       xauth_t

       Note:  semanage	permissive  -a xauth_t can be used to make the process type xauth_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.  xauth policy is extremely flexible and has several booleans that allow  you
       to manipulate the policy and run xauth with the tightest access possible.

       If  you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server, you must turn on the authlo-
       gin_nsswitch_use_ldap boolean. Disabled by default.

       setsebool -P authlogin_nsswitch_use_ldap 1

       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 run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.

       setsebool -P kerberos_enabled 1

       If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

       setsebool -P nis_enabled 1

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

       setsebool -P nscd_use_shm 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

NSSWITCH DOMAIN

       If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server for the xauth_t, you must turn
       on the authlogin_nsswitch_use_ldap boolean.

       setsebool -P authlogin_nsswitch_use_ldap 1

       If you want to allow confined applications to run with kerberos for the xauth_t, you must turn on the kerberos_enabled boolean.

       setsebool -P kerberos_enabled 1

MANAGED FILES

       The  SELinux process type xauth_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.

       cifs_t

       ecryptfs_t

	    /home/[^/]*/.Private(/.*)?
	    /home/[^/]*/.ecryptfs(/.*)?

       fusefs_t

	    /var/run/[^/]*/gvfs

       nfs_t

       user_home_t

	    /home/[^/]*/.+

       user_tmp_t

	    /var/run/user(/.*)?
	    /tmp/hsperfdata_root
	    /var/tmp/hsperfdata_root
	    /tmp/gconfd-.*

       xauth_home_t

	    /root/.xauth.*
	    /root/.Xauth.*
	    /root/.serverauth.*
	    /root/.Xauthority.*
	    /var/lib/pqsql/.xauth.*
	    /var/lib/pqsql/.Xauthority.*
	    /var/lib/nxserver/home/.xauth.*
	    /var/lib/nxserver/home/.Xauthority.*
	    /home/[^/]*/.xauth.*
	    /home/[^/]*/.Xauth.*
	    /home/[^/]*/.serverauth.*
	    /home/[^/]*/.Xauthority.*

       xauth_tmp_t

       xdm_tmp_t

	    /tmp/.X11-unix(/.*)?
	    /tmp/.ICE-unix(/.*)?
	    /tmp/.X0-lock

       xdm_var_run_t

	    /etc/kde[34]?/kdm/backgroundrc
	    /var/run/[kgm]dm(/.*)?
	    /var/run/gdm(3)?.pid
	    /usr/lib/qt-.*/etc/settings(/.*)?
	    /var/run/slim.*
	    /var/run/lxdm(/.*)?
	    /var/run/slim(/.*)?
	    /var/run/xauth(/.*)?
	    /var/run/xdmctl(/.*)?
	    /var/run/lightdm(/.*)?
	    /var/run/systemd/multi-session-x(/.*)?
	    /var/run/xdm.pid
	    /var/run/lxdm.pid
	    /var/run/lxdm.auth
	    /var/run/gdm_socket

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

       STANDARD FILE CONTEXT

       SELinux defines the file context types for the xauth, 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 xauth_exec_t '/srv/xauth/content(/.*)?'
       restorecon -R -v /srv/myxauth_content

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

       The following file types are defined for xauth:

       xauth_exec_t

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

       Paths:
	    /usr/bin/xauth, /usr/X11R6/bin/xauth

       xauth_home_t

       - Set files with the xauth_home_t type, if you want to store xauth files in the users home directory.

       Paths:
	    /root/.xauth.*,  /root/.Xauth.*,  /root/.serverauth.*,  /root/.Xauthority.*,  /var/lib/pqsql/.xauth.*,   /var/lib/pqsql/.Xauthority.*,
	    /var/lib/nxserver/home/.xauth.*,	    /var/lib/nxserver/home/.Xauthority.*,	 /home/[^/]*/.xauth.*,	     /home/[^/]*/.Xauth.*,
	    /home/[^/]*/.serverauth.*, /home/[^/]*/.Xauthority.*

       xauth_tmp_t

       - Set files with the xauth_tmp_t type, if you want to store xauth temporary files in the /tmp directories.

       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), xauth(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8)

xauth								     14-06-10							  xauth_selinux(8)