default_contexts — The SELinux default contexts configuration file
Description
The default contexts configuration file default_contexts contains entries that allow SELinux-aware login applications such as PAM(8)
SELinux-aware login applications generally use one or more of the following libselinux functions that read these files from the active policy path:
get_default_context(3)
get_ordered_context_list(3)
get_ordered_context_list_with_level(3)
get_default_context_with_level(3)
get_default_context_with_role(3)
get_default_context_with_rolelevel(3)
query_user_context(3)
manual_user_enter_context(3)
The default context configuration file path for the active policy is returned by selinux_default_contexts_path(3). The default, default contexts file is:
/etc/selinux/{SELINUXTYPE}/contexts/default_contexts
Where {SELINUXTYPE} is the entry from the selinux configuration file config (see selinux_config(5)).
File Format
Each line in the default configuration file consists of the following:
login_process user_login_process [user_login_process] ...
Where:
- login_process
This consists of a role:type[:range] entry that represents the login process context that are defined in the policy.
- user_login_process
This consists of one or more role:type[:range] entries that represent the user login process context defined in the policy.
Example
# ./contexts/default_contexts
| system_r:crond_t:s0 | system_r:system_crond_t:s0 |
| system_r:local_login_t:s0 | user_r:user_t:s0 staff_r:staff_t:s0 |
| system_r:remote_login_t:s0 | user_r:user_t:s0 |
| system_r:sshd_t:s0 | user_r:user_t:s0 |
| system_r:sulogin_t:s0 | sysadm_r:sysadm_t:s0 |
| system_r:xdm_t:s0 | user_r:user_t:s0 |
See Also
selinux(8), selinux_default_contexts_path(3), PAM(8), selinux_default_type_path(3), get_default_context(3), get_ordered_context_list(3), get_ordered_context_list_with_level(3), get_default_context_with_level(3), get_default_context_with_role(3), get_default_context_with_rolelevel(3), query_user_context(3), manual_user_enter_context(3), selinux_config(5)