Security-Enhanced Linux secures the mplayer processes via flexible mandatory access control.
If you want to allow mplayer executable stack, you must turn on the mplayer_execstack boolean.
setsebool -P mplayer_execstack 1
If you want to allow video playing tools to run unconfined, you must turn on the unconfined_mplayer boolean.
setsebool -P unconfined_mplayer 1
If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd serve for the mplayer_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 mplayer_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
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 mplayer policy is very flexible allowing users to setup their mplayer processes in as secure a method as possible.
The following file types are defined for mplayer:
mplayer_etc_t
- Set files with the mplayer_etc_t type, if you want to store mplayer files in the /etc directories.
mplayer_exec_t
- Set files with the mplayer_exec_t type, if you want to transition an executable to the mplayer_t domain.
mplayer_home_t
- Set files with the mplayer_home_t type, if you want to store mplayer files in the users home directory.
mplayer_tmpfs_t
- Set files with the mplayer_tmpfs_t type, if you want to store mplayer 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.
You can see the context of a process using the -Z option to psP Policy governs the access confined processes have to files. SELinux mplayer policy is very flexible allowing users to setup their mplayer processes in as secure a method as possible.
The following process types are defined for mplayer:
mplayer_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.
The SELinux user type mplayer_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.
mplayer_home_t
/home/[^/]*/.mplayer(/.*)?
mplayer_tmpfs_t
user_fonts_cache_t
/root/.fontconfig(/.*)?
/root/.fonts/auto(/.*)?
/root/.fonts.cache-.*
/home/[^/]*/.fontconfig(/.*)?
/home/[^/]*/.fonts/auto(/.*)?
/home/[^/]*/.fonts.cache-.*
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 bool