mpd_selinux(8) SELinux Policy mpd mpd_selinux(8)NAMEmpd_selinux - Security Enhanced Linux Policy for the mpd processes
DESCRIPTION
Security-Enhanced Linux secures the mpd processes via flexible manda‐
tory access control.
The mpd processes execute with the mpd_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 mpd_t
ENTRYPOINTS
The mpd_t SELinux type can be entered via the mpd_exec_t file type.
The default entrypoint paths for the mpd_t domain are the following:
/usr/bin/mpd
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
mpd policy is very flexible allowing users to setup their mpd processes
in as secure a method as possible.
The following process types are defined for mpd:
mpd_t
Note: semanage permissive -a mpd_t can be used to make the process type
mpd_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. mpd
policy is extremely flexible and has several booleans that allow you to
manipulate the policy and run mpd with the tightest access possible.
If you want to determine whether mpd can traverse user home directo‐
ries, you must turn on the mpd_enable_homedirs boolean. Disabled by
default.
setsebool -P mpd_enable_homedirs 1
If you want to allow mpd execmem/execstack, you must turn on the
mpd_execmem boolean. Disabled by default.
setsebool -P mpd_execmem 1
If you want to determine whether mpd can use cifs file systems, you
must turn on the mpd_use_cifs boolean. Disabled by default.
setsebool -P mpd_use_cifs 1
If you want to determine whether mpd can use nfs file systems, you must
turn on the mpd_use_nfs boolean. Disabled by default.
setsebool -P mpd_use_nfs 1
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 allow all daemons to write corefiles to /, you must turn
on the daemons_dump_core boolean. Disabled by default.
setsebool -P daemons_dump_core 1
If you want to enable cluster mode for daemons, you must turn on the
daemons_enable_cluster_mode boolean. Enabled by default.
setsebool -P daemons_enable_cluster_mode 1
If you want to allow all daemons to use tcp wrappers, you must turn on
the daemons_use_tcp_wrapper boolean. Disabled by default.
setsebool -P daemons_use_tcp_wrapper 1
If you want to allow all daemons the ability to read/write terminals,
you must turn on the daemons_use_tty boolean. Disabled by default.
setsebool -P daemons_use_tty 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 mpd_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
mpd_t, you must turn on the kerberos_enabled boolean.
setsebool -P kerberos_enabled 1
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 mpd policy is very flexible allowing users to setup their mpd
processes in as secure a method as possible.
The following port types are defined for mpd:
mpd_port_t
Default Defined Ports:
tcp 6600
MANAGED FILES
The SELinux process type mpd_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.
anon_inodefs_t
cifs_t
cluster_conf_t
/etc/cluster(/.*)?
cluster_var_lib_t
/var/lib/pcsd(/.*)?
/var/lib/cluster(/.*)?
/var/lib/openais(/.*)?
/var/lib/pengine(/.*)?
/var/lib/corosync(/.*)?
/usr/lib/heartbeat(/.*)?
/var/lib/heartbeat(/.*)?
/var/lib/pacemaker(/.*)?
cluster_var_run_t
/var/run/crm(/.*)?
/var/run/cman_.*
/var/run/rsctmp(/.*)?
/var/run/aisexec.*
/var/run/heartbeat(/.*)?
/var/run/cpglockd.pid
/var/run/corosync.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk
mpd_data_t
/var/lib/mpd/music(/.*)?
/var/lib/mpd/playlists(/.*)?
mpd_home_t
/home/[^/]*/.mpd(/.*)?
mpd_tmp_t
mpd_tmpfs_t
mpd_var_lib_t
/var/lib/mpd(/.*)?
mpd_var_run_t
/var/run/mpd(/.*)?
nfs_t
root_t
/
/initrd
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 mpd policy is very flexible allowing users to setup their mpd
processes in as secure a method as possible.
EQUIVALENCE DIRECTORIES
mpd policy stores data with multiple different file context types under
the /var/lib/mpd directory. If you would like to store the data in a
different directory you can use the semanage command to create an
equivalence mapping. If you wanted to store this data under the /srv
dirctory you would execute the following command:
semanage fcontext -a -e /var/lib/mpd /srv/mpd
restorecon -R -v /srv/mpd
STANDARD FILE CONTEXT
SELinux defines the file context types for the mpd, 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 mpd_data_t '/srv/mpd/content(/.*)?'
restorecon -R -v /srv/mympd_content
Note: SELinux often uses regular expressions to specify labels that
match multiple files.
The following file types are defined for mpd:
mpd_data_t
- Set files with the mpd_data_t type, if you want to treat the files as
mpd content.
Paths:
/var/lib/mpd/music(/.*)?, /var/lib/mpd/playlists(/.*)?
mpd_etc_t
- Set files with the mpd_etc_t type, if you want to store mpd files in
the /etc directories.
mpd_exec_t
- Set files with the mpd_exec_t type, if you want to transition an exe‐
cutable to the mpd_t domain.
mpd_home_t
- Set files with the mpd_home_t type, if you want to store mpd files in
the users home directory.
mpd_initrc_exec_t
- Set files with the mpd_initrc_exec_t type, if you want to transition
an executable to the mpd_initrc_t domain.
mpd_log_t
- Set files with the mpd_log_t type, if you want to treat the data as
mpd log data, usually stored under the /var/log directory.
mpd_tmp_t
- Set files with the mpd_tmp_t type, if you want to store mpd temporary
files in the /tmp directories.
mpd_tmpfs_t
- Set files with the mpd_tmpfs_t type, if you want to store mpd files
on a tmpfs file system.
mpd_user_data_t
- Set files with the mpd_user_data_t type, if you want to treat the
files as mpd user content.
mpd_var_lib_t
- Set files with the mpd_var_lib_t type, if you want to store the mpd
files under the /var/lib directory.
mpd_var_run_t
- Set files with the mpd_var_run_t type, if you want to store the mpd
files under the /run or /var/run 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 data‐
base. 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 pol‐
icy 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 pol‐
icy settings.
AUTHOR
This manual page was auto-generated using sepolicy manpage .
SEE ALSOselinux(8), mpd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) ,
setsebool(8)mpd 14-05-08 mpd_selinux(8)
