xdm_selinux

Section: xdm SELinux Policy documentation (8)
Updated: xdm
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NAME

xdm_selinux - Security Enhanced Linux Policy for the xdm processes

DESCRIPTION

BOOLEANS

SELinux policy is customizable based on least access required. xdm policy is extremely flexible and has several booleans that allow you to manipulate the policy and run xdm with the tightest access possible.

If you want to allow xdm logins as sysad, you must turn on the xdm_sysadm_login boolean.

setsebool -P xdm_sysadm_login 1

If you want to allows xdm to execute bootloade, you must turn on the xdm_exec_bootloader boolean.

setsebool -P xdm_exec_bootloader 1

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

The following file types are defined for xdm:

xdm_etc_t

- Set files with the xdm_etc_t type, if you want to store xdm files in the /etc directories.

xdm_exec_t

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

Paths:: /usr/bin/slim, /usr/(s)?bin/lxdm, /usr/X11R6/bin/[xgkw]dm, /usr/(s)?bin/gdm-binary, /usr/(s)?bin/[xgkw]dm, /usr/(s)?bin/lxdm-binary, /usr/bin/gpe-dm, /opt/kde3/bin/kdm

xdm_home_t

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

xdm_lock_t

- Set files with the xdm_lock_t type, if you want to treat the files as xdm lock data, stored under the /var/lock directory

xdm_log_t

- Set files with the xdm_log_t type, if you want to treat the data as xdm log data, usually stored under the /var/log directory.

Paths:: /var/log/slim.log.*, /var/log/lxdm.log.*, /var/log/gdm(/.*)?

xdm_rw_etc_t

- Set files with the xdm_rw_etc_t type, if you want to store xdm rw files in the /etc directories.

xdm_spool_t

- Set files with the xdm_spool_t type, if you want to store the xdm files under the /var/spool directory.

xdm_tmp_t

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

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

xdm_tmpfs_t

- Set files with the xdm_tmpfs_t type, if you want to store xdm files on a tmpfs file system.

xdm_var_lib_t

- Set files with the xdm_var_lib_t type, if you want to store the xdm files under the /var/lib directory.

Paths:: /var/lib/lxdm(/.*)?, /var/lib/[gxkw]dm(/.*)?, /var/cache/gdm(/.*)?

xdm_var_run_t

- Set files with the xdm_var_run_t type, if you want to store the xdm files under the /run directory.

Paths:: /var/run/kdm(/.*)?, /var/run/slim.*, /var/run/gdm(/.*)?, /var/run/lxdm.auth, /var/run/xauth(/.*)?, /var/run/xdmctl(/.*)?, /var/run/[gx]dm.pid, /usr/lib(64)?/qt-.*/etc/settings(/.*)?, /var/run/lxdm(/*.)?, /var/run/slim(/.*)?, /var/run/gdm_socket, /etc/kde3?/kdm/backgroundrc, /var/run/lxdm.pid

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.

PORT TYPES

SELinux defines port types to represent TCP and UDP ports.

You can see the types associated with a port by using the following command:

semanage port -l

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

The following port types are defined for xdm:

xdmcp_port_t

Default Defined Ports: tcp 8021

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

The following process types are defined for xdm:

xdm_t, xdm_dbusd_t

Note: semanage permissive -a PROCESS_TYPE can be used to make a process type permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

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 port can also be used to manipulate the port definitions

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 autogenerated by genman.py.

This document was created by man2html, using the manual pages.
Time: 05:34:31 GMT, December 24, 2015