apcupsd_selinux man page

apcupsd_selinux — Security Enhanced Linux Policy for the apcupsd processes

Description

Security-Enhanced Linux secures the apcupsd processes via flexible mandatory access control.

The apcupsd processes execute with the apcupsd_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 apcupsd_t

Entrypoints

The apcupsd_t SELinux type can be entered via the apcupsd_exec_t file type.

The default entrypoint paths for the apcupsd_t domain are the following:

/sbin/apcupsd, /usr/sbin/apcupsd

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 psbP

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

The following process types are defined for apcupsd:

apcupsd_t, apcupsd_cgi_script_t

Note: semanage permissive -a apcupsd_t can be used to make the process type apcupsd_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. apcupsd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run apcupsd with the tightest access possible.

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 authlogin_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. Disabled by default.

setsebool -P nscd_use_shm 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 apcupsd policy is very flexible allowing users to setup their apcupsd processes in as secure a method as possible.

The following port types are defined for apcupsd:

apcupsd_port_t

Default Defined Ports: tcp 3551 udp 3551

Managed Files

The SELinux process type apcupsd_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.

apcupsd_lock_t

/var/lock/LCK..
/var/lock/subsys/apcupsd

apcupsd_log_t

/var/log/apcupsd.events.*
/var/log/apcupsd.status.*

apcupsd_power_t

/etc/apcupsd/powerfail

apcupsd_tmp_t

apcupsd_var_run_t

/var/run/apcupsd.pid

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/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/cpglockd.pid
/var/run/corosync.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk

etc_runtime_t

/[^/]+
/etc/mtab.*
/etc/blkid(/.*)?
/etc/nologin.*
/etc/.fstab.hal..+
/halt
/fastboot
/poweroff
/etc/cmtab
/.autofsck
/forcefsck
/.suspended
/fsckoptions
/var/.updated
/etc/.updated
/.autorelabel
/etc/securetty
/etc/nohotplug
/etc/killpower
/etc/ioctl.save
/etc/fstab.REVOKE
/etc/network/ifstate
/etc/sysconfig/hwconf
/etc/ptal/ptal-printd-like
/etc/sysconfig/iptables.save
/etc/xorg.conf.d/00-system-setup-keyboard.conf
/etc/X11/xorg.conf.d/00-system-setup-keyboard.conf

initrc_var_run_t

/var/run/utmp
/var/run/random-seed
/var/run/runlevel.dir
/var/run/setmixer_flag

root_t

/
/initrd

systemd_passwd_var_run_t

/var/run/systemd/ask-password(/.*)?
/var/run/systemd/ask-password-block(/.*)?

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 lsbP

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

STANDARD FILE CONTEXT

SELinux defines the file context types for the apcupsd, 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 apcupsd_var_run_t '/srv/myapcupsd_content(/.*)?'
restorecon -R -v /srv/myapcupsd_content

Note: SELinux often uses regular expressions to specify labels that match multiple files.

The following file types are defined for apcupsd:

apcupsd_cgi_content_t

- Set files with the apcupsd_cgi_content_t type, if you want to treat the files as apcupsd cgi content.

apcupsd_cgi_htaccess_t

- Set files with the apcupsd_cgi_htaccess_t type, if you want to treat the file as a apcupsd cgi access file.

apcupsd_cgi_ra_content_t

- Set files with the apcupsd_cgi_ra_content_t type, if you want to treat the files as apcupsd cgi read/append content.

apcupsd_cgi_rw_content_t

- Set files with the apcupsd_cgi_rw_content_t type, if you want to treat the files as apcupsd cgi read/write content.

apcupsd_cgi_script_exec_t

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

Paths:
/var/www/cgi-bin/apcgui(/.*)?, /var/www/apcupsd/multimon.cgi, /var/www/apcupsd/upsimage.cgi, /var/www/apcupsd/upsstats.cgi, /var/www/apcupsd/upsfstats.cgi

apcupsd_exec_t

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

Paths:
/sbin/apcupsd, /usr/sbin/apcupsd

apcupsd_initrc_exec_t

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

apcupsd_lock_t

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

Paths:
/var/lock/LCK.., /var/lock/subsys/apcupsd

apcupsd_log_t

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

Paths:
/var/log/apcupsd.events.*, /var/log/apcupsd.status.*

apcupsd_power_t

- Set files with the apcupsd_power_t type, if you want to treat the files as apcupsd power data.

apcupsd_tmp_t

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

apcupsd_unit_file_t

- Set files with the apcupsd_unit_file_t type, if you want to treat the files as apcupsd unit content.

apcupsd_var_run_t

- Set files with the apcupsd_var_run_t type, if you want to store the apcupsd 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 database. 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 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 auto-generated using sepolicy manpage .

See Also

selinux(8), apcupsd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8) , setsebool(8), apcupsd_cgi_script_selinux(8)

Info

16-11-29 apcupsd SELinux Policy apcupsd