irqbalance_selinux(8)

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

🌸 irqbalance_selinux(8) — the SELinux glow-up for your irqbalance processes 💅

okay so bestie, welcome to irqbalance_selinux(8), aka the manual page for the SELinux policy that keeps your irqbalance processes on a very cute leash. it's part of the SELinux Policy irqbalance fam, and we're gonna walk through it together, no cap. 🫶

✨ NAME ✨

irqbalance_selinux — Security Enhanced Linux Policy for the irqbalance processes. literally that's the whole vibe. 🎀

💖 DESCRIPTION 💖

Security-Enhanced Linux secures the irqbalance processes via flexible mandatory access control. yes bestie, mandatory — not a suggestion, an enforcement. 🔥

The irqbalance processes execute with the irqbalance_t SELinux type. want to check if you've got these processes running? just run the ps command with the -Z qualifier, easy peasy.

Like, for example:

ps -eZ | grep irqbalance_t

see? gorgeous. ✨

🚪 ENTRYPOINTS 🚪

The irqbalance_t SELinux type can be entered via the irqbalance_exec_t file type. that's the doorway, bestie.

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

/usr/bin/irqbalance

one door, one path, iconic. 🚪💫

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. it's giving main-character energy for every single process. 🌈

You can see the context of a process using the -Z option to ps. yeah, -Z is the moment.

Policy governs the access confined processes have to files. SELinux irqbalance policy is very flexible, allowing users to setup their irqbalance processes in as secure a method as possible. flexible and secure? we love a multitasker. 💜

The following process types are defined for irqbalance:

  • irqbalance_t
  • irqbalance_unconfined_script_t
Note: semanage permissive -a irqbalance_t can be used to make the process type irqbalance_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's chill about denying, but it still writes everything down in its diary. 😭

🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. irqbalance policy is extremely flexible and has several booleans that allow you to manipulate the policy and run irqbalance with the tightest access possible. tightest access = bestie behavior, fr fr. 🦋

If you want to allow irqbalance to run unconfined scripts, you must turn on the irqbalance_run_unconfined boolean. Disabled by default.

setsebool -P irqbalance_run_unconfined 1

If you want to dontaudit all daemons scheduling requests (setsched, sys_nice), you must turn on the daemons_dontaudit_scheduling boolean. Enabled by default.

setsebool -P daemons_dontaudit_scheduling 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

three booleans, all accounted for, slay. ✨

📁 MANAGED FILES 📁

The SELinux process type irqbalance_t can manage files labeled with the following file types. the paths listed are the default paths for these file types. and psst — the processes UID still need to have DAC permissions, so don't come for SELinux when DAC is the one blocking you, okay? 💀

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

irqbalance_var_run_t

/run/irqbalance.*

root_t

/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp

that's a lot of paths and we listed every single one, because we don't skip. 🫶

🗂️ FILE CONTEXTS 🗂️

SELinux requires files to have an extended attribute to define the file type. yes, files have vibes too, and their vibe is stored as an xattr. 🌸

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the irqbalance, so if you wanted to store files with these types in a different paths (yes, that grammar is the original's, we don't fix, we preserve 💅), 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 irqbalance_exec_t
'/srv/irqbalance/content(/.*)?'
restorecon -R -v /srv/myirqbalance_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise. 🔥

The following file types are defined for irqbalance:

irqbalance_exec_t

  • Set files with the irqbalance_exec_t type, if you want to transition an executable to the irqbalance_t domain.

irqbalance_initrc_exec_t

  • Set files with the irqbalance_initrc_exec_t type, if you want to transition an executable to the irqbalance_initrc_t domain.

irqbalance_unconfined_script_exec_t

  • Set files with the irqbalance_unconfined_script_exec_t type, if you want to transition an executable to the irqbalance_unconfined_script_t domain.

irqbalance_var_run_t

  • Set files with the irqbalance_var_run_t type, if you want to store the irqbalance 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. so like — chcon is the fleeting aesthetic, semanage fcontext + restorecon is the permanent glow-up. know the difference bestie. 💀✨

🛠️ 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 boolean can also be used to manipulate the booleans. (yes, semanage really said "i contain multitudes" and honestly? same.) 👑

system-config-selinux is a GUI tool available to customize SELinux policy settings. a whole GUI, for the besties who like clicking. 🖱️💖

✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage. not me being auto-generated and still having this much personality 😭💅

👀 SEE ALSO 👀

selinux(8), irqbalance(8), semanage(8), restorecon(8), chcon(1), sepolicy(8), setsebool(8), irqbalance_unconfined_script_selinux(8), irqbalance_unconfined_script_selinux(8)

(yes, irqbalance_unconfined_script_selinux(8) is in there twice — the original said it twice, we said it twice, we don't gatekeep, we don't edit. 🫶)

and that's the whole page, bestie!! 🎉 this was the irqbalance manual, dated 26-10-06, sourced from irqbalance_selinux(8) — mwah, go forth and label responsibly 💜🦋🌸

📦 where this page comes from