lircd_selinux(8)

📦
version 20250627+git412.dbf877ab7 · 7 versions
, in opensuse-leap 16.0

✨ NAME ✨

Okay so bestie, gather round — this is lircd_selinux(8), and it's literally the Security Enhanced Linux Policy for the lircd processes. Iconic, I know. 💅

💖 DESCRIPTION 💖

Security-Enhanced Linux secures the lircd processes via flexible mandatory access control. No cap, that's the whole point.

The lircd processes execute with the lircd_t SELinux type. Wanna check if you've got these processes running? Just execute the ps command with the -Z qualifier, like this:

ps -eZ | grep lircd_t

Go off, bestie. 🫶

🚪 ENTRYPOINTS 🚪

The lircd_t SELinux type can be entered via the lircd_exec_t file type. That's the doorway, basically.

The default entrypoint paths for the lircd_t domain are literally just:

/usr/bin/lircd

👑 PROCESS TYPES 👑

SELinux defines process types (aka domains) for each process running on the system. Slay.

You can see the context of a process using the -Z option to ps. Simple as that.

Policy governs the access confined processes have to files. SELinux lircd policy is very flexible, allowing users to set up their lircd processes in as secure a method as possible. Love that for us.

The following process types are defined for lircd:

  • lircd_t
💀 Note: semanage permissive -a lircd_t can be used to make the process type lircd_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. The lircd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run lircd with the tightest access possible. So fetch. ✨

  • daemons_dontaudit_scheduling — if you want to dontaudit all daemons scheduling requests (setsched, sys_nice), you must turn on this boolean. Enabled by default.
setsebool -P daemons_dontaudit_scheduling 1
  • fips_mode — if you want to allow all domains to execute in fips_mode, you must turn on this boolean. Enabled by default.
setsebool -P fips_mode 1
  • nis_enabled — if you want to allow the system to run with NIS, you must turn on this boolean. Disabled by default.
setsebool -P nis_enabled 1

🌈 PORT TYPES 🌈

SELinux defines port types to represent TCP and UDP ports. Cute.

You can see the types associated with a port by using this command:

semanage port -l

Policy governs the access confined processes have to these ports. SELinux lircd policy is very flexible, allowing users to set up their lircd processes in as secure a method as possible. Periodt.

The following port types are defined for lircd:

  • lirc_port_t

Default Defined Ports: tcp 8765

🍓 MANAGED FILES 🍓

The SELinux process type lircd_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note: the process's UID still needs to have DAC permissions. Don't forget that part, bestie. 🙈

  • 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
    • /run/crm(/.*)?
    • /run/cman_.*
    • /run/rsctmp(/.*)?
    • /run/aisexec.*
    • /run/heartbeat(/.*)?
    • /run/pcsd-ruby.socket
    • /run/corosync-qnetd(/.*)?
    • /run/corosync-qdevice(/.*)?
    • /run/pcsd.socket
    • /run/corosync.pid
    • /run/cpglockd.pid
    • /run/rgmanager.pid
    • /run/cluster/rgmanager.sk
  • krb5_host_rcache_t
    • /var/tmp/krb5_0.rcache2
    • /var/cache/krb5rcache(/.*)?
    • /var/tmp/nfs_0
    • /var/tmp/DNS_25
    • /var/tmp/host_0
    • /var/tmp/imap_0
    • /var/tmp/HTTP_23
    • /var/tmp/HTTP_48
    • /var/tmp/ldap_55
    • /var/tmp/ldap_487
    • /var/tmp/ldapmap1_0
  • lircd_var_run_t
    • /run/lirc(/.*)?
    • /run/lircd(/.*)?
    • /dev/lircd
    • /run/lircd.pid
  • root_t
    • /sysroot/.aleph-version.json
    • /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
    • /
    • /initrd
    • /var/lib/ntp
  • sysfs_t
    • /sys(/.*)?

🦋 FILE CONTEXTS 🦋

SELinux requires files to have an extended attribute to define the file type. Basically, files need their little name tags. 🏷️

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 lircd policy is very flexible, allowing users to set up their lircd processes in as secure a method as possible. Highkey obsessed.

🎀 STANDARD FILE CONTEXT 🎀

SELinux defines the file context types for lircd. If you wanted to store files with these types in different paths, you need to execute the semanage command to specify alternate labeling, and then use restorecon to put the labels on disk. Like so:

semanage fcontext -a -t lircd_exec_t '/srv/lircd/content(/.*)?'
restorecon -R -v /srv/mylircd_content
💖 Note: SELinux often uses regular expressions to specify labels that match multiple files. Very regex-core of it.

The following file types are defined for lircd:

  • lircd_etc_t — set files with the lircd_etc_t type if you want to store lircd files in the /etc directories. Paths: /etc/lirc(/.*)?, /etc/lircd.conf
  • lircd_exec_t — set files with the lircd_exec_t type if you want to transition an executable to the lircd_t domain.
  • lircd_initrc_exec_t — set files with the lircd_initrc_exec_t type if you want to transition an executable to the lircd_initrc_t domain.
  • lircd_var_run_t — set files with the lircd_var_run_t type if you want to store the lircd files under the /run or /var/run directory. Paths: /run/lirc(/.*)?, /run/lircd(/.*)?, /dev/lircd, /run/lircd.pid
💀 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. Don't skip that step, bestie — it's giving necessary.

🛠️ 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. Fancy. ✨

🫶 AUTHOR 🫶

This manual page was auto-generated using sepolicy manpage. Not me writing it by hand, the tool did all the work. 💅

🔥 SEE ALSO 🔥

selinux(8), lircd(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8)

And that's the whole page, bestie! This gem is from the lircd source, version/date 26-10-06, and yeah — it's lircd_selinux(8). Go forth and SELinux responsibly. 🎀💜

📦 where this page comes from