uuidd_selinux(8)

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

✨ uuidd_selinux ✨

Okay so bestie, welcome to the uuidd_selinux(8) manual page — this is literally your guide to the SELinux policy for the uuidd processes, and I'm about to break it all the way down for you. No cap, it's giving security realness. 💅

🌸 NAME 🌸

uuidd_selinux — Security Enhanced Linux Policy for the uuidd processes. Periodt. 💖

🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the uuidd processes via flexible mandatory access control. Like, it's literally the bodyguard for your processes — mandatory access control, no exceptions. 🔥

The uuidd processes execute with the uuidd_t SELinux type. Wanna check if you've got these processes running? Just execute the ps command with the -Z qualifier, bestie. Easy. 🎀

For example:

ps -eZ | grep uuidd_t

🧚 ENTRYPOINTS 🧚

The uuidd_t SELinux type can be entered via the uuidd_exec_t file type. That's the doorway, the main character entrance, iykyk. 🚪✨

The default entrypoint paths for the uuidd_t domain are literally the following:

/usr/bin/uuidd

👑 PROCESS TYPES 👑

SELinux defines process types (aka domains) for each process running on the system. It's giving organized. 💜

You can see the context of a process using the -Z option to ps. Go off. 🔍

Policy governs the access confined processes have to files. SELinux uuidd policy is super flexible, allowing users to setup their uuidd processes in as secure a method as possible. Flexible AND secure? Obsessed. 🫶

The following process types are defined for uuidd:

uuidd_t

Note: semanage permissive -a uuidd_t can be used to make the process type uuidd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. So like, it's still watching you. 👀

💖 BOOLEANS 💖

SELinux policy is customizable based on least access required. The uuidd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run uuidd with the tightest access possible. Tightest access? We love a security 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

🌈 MANAGED FILES 🌈

The SELinux process type uuidd_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. Can't skip the basics, 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
  • root_t
/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp
  • uuidd_var_lib_t
/var/lib/libuuid(/.*)?
  • uuidd_var_run_t
/run/uuidd(/.*)?

🎀 FILE CONTEXTS 🎀

SELinux requires files to have an extended attribute to define the file type. Like, every file needs its label, no exceptions. 🏷️

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

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the uuidd. 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. It's giving two-step process, but it works. 💫

semanage fcontext -a -t uuidd_exec_t '/srv/uuidd/content(/.*)?'
restorecon -R -v /srv/myuuidd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. Regex is literally everywhere, bestie. 😭

The following file types are defined for uuidd:

  • uuidd_exec_t — Set files with the uuidd_exec_t type, if you want to transition an executable to the uuidd_t domain.
  • uuidd_initrc_exec_t — Set files with the uuidd_initrc_exec_t type, if you want to transition an executable to the uuidd_initrc_t domain.
  • uuidd_var_lib_t — Set files with the uuidd_var_lib_t type, if you want to store the uuidd files under the /var/lib directory.
  • uuidd_var_run_t — Set files with the uuidd_var_run_t type, if you want to store the uuidd 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. Temporary vs permanent, know the difference. 💀

🛠️ 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.
  • system-config-selinux is a GUI tool available to customize SELinux policy settings. A whole GUI? For the girlies who don't love the terminal 24/7 (but we still do, obviously). 🖥️✨

🌟 AUTHOR 🌟

This manual page was auto-generated using sepolicy manpage. The robots did this one, not me. 🤖💅

💜 SEE ALSO 💜

That's the whole vibe, bestie — uuidd_selinux(8), version 26-10-06, from uuidd. You're literally an SELinux expert now. Go off, icon. 🦋💖✨

📦 where this page comes from