alsa_selinux(8) SELinux Policy documentation for alsa alsa_selinux(8)

NAME alsa_selinux - Security Enhanced Linux Policy for the alsa processes

DESCRIPTION Security-Enhanced Linux secures the alsa processes via flexible manda- tory access control.

The alsa processes execute with the alsa_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 alsa_t

ENTRYPOINTS The alsa_t SELinux type can be entered via the "alsa_exec_t" file type. The default entrypoint paths for the alsa_t domain are the following:"

/sbin/salsa, /sbin/alsactl, /usr/bin/ainit, /bin/alsaunmute

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

The following process types are defined for alsa:

alsa_t

Note: semanage permissive -a alsa_t

can be used to make the process type alsa_t permissive. Permissive pro- cess types are not denied access by SELinux. AVC messages will still be generated.

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

The following file types are defined for alsa:

alsa_etc_rw_t

- Set files with the alsa_etc_rw_t type, if you want to treat the files as alsa etc read/write content.

alsa_exec_t

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

alsa_var_lib_t

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

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.

MANAGED FILES The SELinux process type alsa_t can manage files labeled with the fol- lowing file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.

alsa_etc_rw_t

/etc/asound(/.*)? /etc/alsa/pcm(/.*)? /etc/asound.state /etc/alsa/asound.state

alsa_var_lib_t

/var/lib/alsa(/.*)?

hald_log_t

/var/log/pm(/.*)? /var/log/pm-.*.log.*

initrc_tmp_t

mnt_t

/mnt(/[^/]*) /mnt(/[^/]*)? /rhev(/[^/]*)? /media(/[^/]*) /media(/[^/]*)? /etc/rhgb(/.*)? /media/.hal-.* /net /afs /misc /rhev

tmp_t

/tmp /usr/tmp /var/tmp /var/tmp/vi.recover

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 pol- icy modules.

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

AUTHOR This manual page was auto-generated using sepolicy manpage by mgrepl.

SEE ALSO selinux(8), alsa(8), semanage(8), restorecon(8), chcon(1), sepolicy(8)

alsa 13-01-04 alsa_selinux(8)