aiccu_selinux(8)

📦 version 38.1.87, in centos-stream 9

💅 aiccu_selinux — bestie edition ✨

Okay so this is the aiccu_selinux(8) page, and it's literally all about the SELinux policy for aiccu processes. Strap in, bestie 💖

🌸 NAME 🌸

aiccu_selinux — Security Enhanced Linux Policy for the aiccu processes. No cap, that's the whole vibe.

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the aiccu processes via flexible mandatory access control. It's giving very secure, very demure 🎀

The aiccu processes execute with the aiccu_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 aiccu_t

Slay, now you know 🫶

🚪 ENTRYPOINTS 🚪

The aiccu_t SELinux type can be entered via the aiccu_exec_t file type. That's the VIP pass, iykyk.

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

/usr/sbin/aiccu

👑 PROCESS TYPES 👑

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

You can see the context of a process using the -Z option to ps. Lowkey useful, highkey iconic.

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

The following process types are defined for aiccu:

aiccu_t
Note: semanage permissive -a aiccu_t can be used to make the process type aiccu_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. So like, it's not a free pass, bestie — the receipts still get logged 💀

🔘 BOOLEANS 🔘

SELinux policy is customizable based on least access required. aiccu policy is extremely flexible and has several booleans that allow you to manipulate the policy and run aiccu with the tightest access possible. We love a customizable queen 👑

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

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

📂 MANAGED FILES 📂

The SELinux process type aiccu_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. So like, don't forget the basics, bestie 🙈

  • aiccu_var_run_t
/var/run/aiccu.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/pcsd-ruby.socket
/var/run/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/pcsd.socket
/var/run/corosync.pid
/var/run/cpglockd.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk
  • root_t
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd

🗂️ FILE CONTEXTS 🗂️

SELinux requires files to have an extended attribute to define the file type. It's giving attention to detail 💅

You can see the context of a file using the -Z option to ls. Iconic.

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

🌟 STANDARD FILE CONTEXT 🌟

SELinux defines the file context types for the aiccu, if you wanted to store files with these types in a different paths, you need to execute the semanage command to specify alternate labeling and then use restorecon to put the labels on disk. Bestie, this is the glow-up your file paths deserve ✨

semanage fcontext -a -t aiccu_var_run_t '/srv/myaiccu_content(/.*)?'
restorecon -R -v /srv/myaiccu_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. Regex girlies rise up 💀

The following file types are defined for aiccu:

  • aiccu_etc_t — Set files with the aiccu_etc_t type, if you want to store aiccu files in the /etc directories. Classic, iconic, essential.
  • aiccu_exec_t — Set files with the aiccu_exec_t type, if you want to transition an executable to the aiccu_t domain. Main character energy fr 🎀
  • aiccu_initrc_exec_t — Set files with the aiccu_initrc_exec_t type, if you want to transition an executable to the aiccu_initrc_t domain. She's got her own domain, we love to see it.
  • aiccu_var_run_t — Set files with the aiccu_var_run_t type, if you want to store the aiccu files under the /run or /var/run directory. Run girl, run 🏃‍♀️
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 quick fix, semanage + restorecon is the commitment. Choose wisely 💖

🛠️ COMMANDS 🛠️

  • semanage fcontext can also be used to manipulate default file context mappings. The mapping queen 👑
  • semanage permissive can also be used to manipulate whether or not a process type is permissive. Permissive era 💅
  • semanage module can also be used to enable/disable/install/remove policy modules. Module management, slay.
  • semanage boolean can also be used to manipulate the booleans. Boolean besties, rise 🫶
  • system-config-selinux is a GUI tool available to customize SELinux policy settings. For the visual learners, periodt 💻✨

✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage. Not me being literally generated by a script and still serving looks 💀💅

👀 SEE ALSO 👀

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

Okay bye bestie, go secure those aiccu processes 💖✨🎀🦋🌸 This page was served fresh from aiccu version 26-10-23, and the footer says aiccu_selinux(8) — catch you on the flip side, mwah 😘

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