tuned_ppd_selinux(8)

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

okay so you opened tuned_ppd_selinux(8) and honestly? this is the SELinux glow-up page for the tuned_ppd processes. bestie, we're getting into mandatory access control and it's giving secure, iconic, and very specific 💅

💖 NAME 💖

tuned_ppd_selinux — Security Enhanced Linux Policy for the tuned_ppd processes. periodt.

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the tuned_ppd processes via flexible mandatory access control. no cap.

The tuned_ppd processes execute with the tuned_ppd_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 tuned_ppd_t

🦋 ENTRYPOINTS 🦋

The tuned_ppd_t SELinux type can be entered via the tuned_ppd_exec_t file type.

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

  • /usr/bin/tuned-ppd

🎀 PROCESS TYPES 🎀

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

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

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

The following process types are defined for tuned_ppd:

  • tuned_ppd_t
Note: semanage permissive -a tuned_ppd_t can be used to make the process type tuned_ppd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's permissive but it's still telling on you 😭

🌸 BOOLEANS 🌸

SELinux policy is customizable based on least access required. tuned_ppd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run tuned_ppd with the tightest access possible. tightest access possible is the vibe check.

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 tuned_ppd_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. yes, both things matter, 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
  • tuned_log_t
    • /var/log/tuned(/.*)?
    • /var/log/tuned.log.*
  • tuned_rw_etc_t
    • /etc/tuned/bootcmdline
    • /etc/tuned/profile_mode
    • /etc/tuned/active_profile
    • /etc/tuned/ppd_base_profile
    • /etc/tuned/post_loaded_profile

💅 FILE CONTEXTS 💅

SELinux requires files to have an extended attribute to define the file type. it's literally required, no skips.

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 tuned_ppd policy is very flexible, allowing users to setup their tuned_ppd processes in as secure a method as possible. secure method possible is the whole point, bestie.

🎀 STANDARD FILE CONTEXT 🎀

SELinux defines the file context types for the tuned_ppd. 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.

semanage fcontext -a -t tuned_ppd_exec_t '/srv/tuned_ppd/content(/.*)?'
restorecon -R -v /srv/mytuned_ppd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise.

The following file types are defined for tuned_ppd:

  • tuned_ppd_exec_t — Set files with the tuned_ppd_exec_t type, if you want to transition an executable to the tuned_ppd_t domain.
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 is cute, permanent is serious 💅

🔥 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. GUI girlies, this one's for you 🫶

🍓 AUTHOR 🍓

This manual page was auto-generated using sepolicy manpage. auto-generated and still serving, honestly iconic.

🌈 SEE ALSO 🌈

okay that's the whole page, bestie 💖 this lil manual comes from tuned_ppd, dated 26-10-06, and it's serving tuned_ppd_selinux(8) realness — mwah 💋✨

📦 where this page comes from