vdagent_selinux(8)

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

💅 vdagent_selinux — okay bestie, let's talk SELinux

Hey so this is the vdagent_selinux(8) page, part of the SELinux Policy vdagent fam — and it's literally all about the Security Enhanced Linux Policy for the vdagent processes. Buckle up, it's gonna be a cute little ride 🎀

✨ NAME ✨

vdagent_selinux — the Security Enhanced Linux Policy for the vdagent processes. That's it, that's the whole vibe 🫶

🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the vdagent processes via flexible mandatory access control. Yes, mandatory. Not like, optional. It's giving strict parents but make it security 💅

The vdagent processes execute with the vdagent_t SELinux type. You can check if you've got any of these processes running by executing the ps command with the -Z qualifier. Like this:

ps -eZ | grep vdagent_t

That's the whole check, no cap ✨

🦋 ENTRYPOINTS 🦋

The vdagent_t SELinux type can be entered via the vdagent_exec_t file type.

The default entrypoint paths for the vdagent_t domain are literally just this one:

/usr/bin/spice-vdagentd

One path. One icon. Main character energy 👑

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system — yes, every single one gets its own lil label 🏷️

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

Policy governs the access confined processes have to files. The SELinux vdagent policy is very flexible, allowing users to setup their vdagent processes in as secure a method as possible. Slay 🌈

The following process types are defined for vdagent:

  • vdagent_t
Note: semanage permissive -a vdagent_t can be used to make the process type vdagent_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. So like, it stops blocking but it still snitches 💀

🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. The vdagent policy is extremely flexible and has several booleans that allow you to manipulate the policy and run vdagent with the tightest access possible. Customization era 💖

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

Two booleans, both already on by default. Lowkey chill 😌

🍓 MANAGED FILES 🍓

The SELinux process type vdagent_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 — SELinux isn't doing everything for you, 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
  • mtrr_device_t
/dev/cpu/mtrr
  • root_t
/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp
  • vdagent_var_run_t
/run/spice-vdagentd(/.*)?
/run/spice-vdagentd.pid

That's a lot of paths, but we ate and left no crumbs 🔥

🧚 FILE CONTEXTS 🧚

SELinux requires files to have an extended attribute to define the file type. Fancy ✨

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

Policy governs the access confined processes have to these files. The SELinux vdagent policy is very flexible, allowing users to setup their vdagent processes in as secure a method as possible. Same energy as before, but for files this time 💜

💫 EQUIVALENCE DIRECTORIES 💫

The vdagent policy stores data with multiple different file context types under the /var/log/spice-vdagentd directory. If you would like to store the data in a different directory you can use the semanage command to create an equivalence mapping. If you wanted to store this data under the /srv directory you would execute the following command:

semanage fcontext -a -e /var/log/spice-vdagentd /srv/spice-vdagentd
restorecon -R -v /srv/spice-vdagentd

Move the data, keep the labels. Iconic behavior 🎀

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the vdagent, so 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.

semanage fcontext -a -t vdagent_exec_t '/srv/vdagent/content(/.*)?'
restorecon -R -v /srv/myvdagent_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. Regex girlies stay winning 😭

The following file types are defined for vdagent:

vdagent_exec_t

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

vdagent_log_t

  • Set files with the vdagent_log_t type, if you want to treat the data as vdagent log data, usually stored under the /var/log directory.

Paths:

/var/log/spice-vdagentd(/.*)?, /var/log/spice-vdagentd.log.*

vdagent_var_run_t

  • Set files with the vdagent_var_run_t type, if you want to store the vdagent files under the /run or /var/run directory.

Paths:

/run/spice-vdagentd(/.*)?, /run/spice-vdagentd.pid

vdagentd_initrc_exec_t

  • Set files with the vdagentd_initrc_exec_t type, if you want to transition an executable to the vdagentd_initrc_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 vs permanent, 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.
  • system-config-selinux is a GUI tool available to customize SELinux policy settings.

Toolbox acquired 🧰✨

💖 AUTHOR 💖

This manual page was auto-generated using sepolicy manpage. Not me, not you — the machine did it 🙈

🫶 SEE ALSO 🫶

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

And that's the whole page, bestie! This beauty is from vdagent, dated 26-10-06, and it lives at vdagent_selinux(8) in the manual. Go forth and label responsibly 💜🦋🌸

📦 where this page comes from