auditd_selinux(8)

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

💅 auditd_selinux(8) — the SELinux policy page for auditd, bestie edition

okay so this is auditd_selinux, straight out of the SELinux Policy auditd manual, and it's literally your whole guide to how SELinux handles the auditd processes. grab a snack, we're doing this 🍓

✨ NAME ✨

auditd_selinux — the Security Enhanced Linux Policy for the auditd processes. that's it, that's the vibe 🎀

🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the auditd processes via flexible mandatory access control. yes bestie, mandatory — not the optional kind, the "the policy said so" kind 💅

The auditd processes execute with the auditd_t SELinux type. wanna check if you've got these processes running? just run the ps command with the -Z qualifier. easy.

For example:

ps -eZ | grep auditd_t

that's it. that's the whole vibe check 👑

🦋 ENTRYPOINTS 🦋

The auditd_t SELinux type can be entered via the auditd_exec_t file type. that's the doorway, the portal, the main character entrance 🚪✨

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

/usr/bin/auditd

one path. iconic. minimal. we love a single-entry situation 🫶

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. every process gets a little label, it's giving name-tag energy at the world's strictest party 🎈

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

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

The following process types are defined for auditd:

  • auditd_t
Note: semanage permissive -a auditd_t can be used to make the process type auditd_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 you but it still talks about you behind your back 😭 the receipts stay!

⭐ BOOLEANS ⭐

SELinux policy is customizable based on least access required. auditd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run auditd with the tightest access possible. it's basically a bunch of toggles and you're the DJ 🎛️

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 run with kerberos, you must turn on the kerberos_enabled boolean. Enabled by default.

setsebool -P kerberos_enabled 1

If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

setsebool -P nis_enabled 1

(note the flip bestie — this one starts OFF 🙈)

🌈 PORT TYPES 🌈

SELinux defines port types to represent TCP and UDP ports. yes, ports get types too, everyone gets a label in this economy 💀

You can see the types associated with a port by using the following command:

semanage port -l

Policy governs the access confined processes have to these ports. SELinux auditd policy is very flexible, allowing users to setup their auditd processes in as secure a method as possible. (yes she says this every section, she's consistent, she's committed, she ate 🔥)

The following port types are defined for auditd:

  • aud_port_t — wait no, it's audit_port_t 💅

Default Defined Ports:

tcp 60

port 60 on tcp. tiny number, big responsibility 🧚

🎀 MANAGED FILES 🎀

The SELinux process type auditd_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 out here overriding your regular permissions, they're a team 🤝

auditd_log_t

/var/log/audit(/.*)?
/var/log/audit.log.*

auditd_tmp_t

(no paths listed, she's mysterious, she's a vibe 🦋)

auditd_var_run_t

/run/audit(/.*)?
/run/auditd.pid
/run/auditd_sock
/run/auditd.state
/run/audit_events

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

krb5_host_rcache_t

/var/tmp/krb5_0.rcache2
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/var/tmp/DNS_25
/var/tmp/host_0
/var/tmp/imap_0
/var/tmp/HTTP_23
/var/tmp/HTTP_48
/var/tmp/ldap_55
/var/tmp/ldap_487
/var/tmp/ldapmap1_0

root_t

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

(yes, that's literally / in there. she contains everything, she's the whole world 🌍)

security_t

/selinux

systemd_passwd_var_run_t

/run/systemd/ask-password(/.*)?
/run/systemd/ask-password-block(/.*)?

💖 FILE CONTEXTS 💖

SELinux requires files to have an extended attribute to define the file type. no attribute, no entry, those are the rules 🚫

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 auditd policy is very flexible, allowing users to setup their auditd processes in as secure a method as possible. (she said it again. queen of consistency 👑)

🗂️ EQUIVALENCE DIRECTORIES 🗂️

auditd policy stores data with multiple different file context types under the /var/log/audit 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/audit /srv/audit
restorecon -R -v /srv/audit

literally "make /srv/audit behave exactly like /var/log/audit" — a little alias for directories, no cap ✨

🧾 STANDARD FILE CONTEXT 🧾

SELinux defines the file context types for the auditd. 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 auditd_etc_t '/srv/auditd/content(/.*)?'
restorecon -R -v /srv/myauditd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex jumpscare 🙈 but like, a helpful one

The following file types are defined for auditd:

  • auditd_etc_t — Set files with the auditd_etc_t type, if you want to store auditd files in the /etc directories.
  • auditd_exec_t — Set files with the auditd_exec_t type, if you want to transition an executable to the auditd_t domain. this is the one that opens the door 🚪
  • auditd_initrc_exec_t — Set files with the auditd_initrc_exec_t type, if you want to transition an executable to the auditd_initrc_t domain.
  • auditd_log_t — Set files with the auditd_log_t type, if you want to treat the data as auditd log data, usually stored under the /var/log directory.

Paths:

/var/log/audit(/.*)?, /var/log/audit.log.*
  • auditd_tmp_t — Set files with the auditd_tmp_t type, if you want to store auditd temporary files in the /tmp directories.
  • auditd_unit_file_t — Set files with the auditd_unit_file_t type, if you want to treat the files as auditd unit content.
  • auditd_var_run_t — Set files with the auditd_var_run_t type, if you want to store the auditd files under the /run or /var/run directory.

Paths:

/run/audit(/.*)?, /run/auditd.pid, /run/auditd_sock,
/run/auditd.state, /run/audit_events
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 temporary tattoo, semanage fcontext + restorecon is the real one 💅

🛠️ COMMANDS 🛠️

these tools are your besties, get to know them:

  • 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 port can also be used to manipulate the port definitions.
  • semanage boolean can also be used to manipulate the booleans.
  • system-config-selinux is a GUI tool available to customize SELinux policy settings. (a GUI!! for the girlies who like buttons 🖱️💖)

✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage. a bot wrote this and honestly? it ate 🤖🔥

🔗 SEE ALSO 🔗

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

anyway bestie that's the whole page, no skips, no cuts, we read the entire thing like the good students we are 📚✨ this was auditd, version/date 26-10-06, and the manual is auditd_selinux(8) — mwah, go label something responsibly 💋🫶

📦 where this page comes from