courier_pcp_selinux(8)

💅 courier_pcp_selinux(8) — the SELinux policy for courier_pcp girlies

okay so bestie, this is the manual page for courier_pcp_selinux, and it's genuinely so important if you're messing with SELinux and Courier stuff. Let's get into it 💖

✨ NAME ✨

courier_pcp_selinux — the Security Enhanced Linux Policy for the courier_pcp processes. periodt.

🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the courier_pcp processes via flexible mandatory access control. like, it's literally the bouncer at the club and the courier_pcp processes are the VIPs with the wristbands 🎀

The courier_pcp processes execute with the courier_pcp_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 courier_pcp_t

that's it, that's the vibe check 🔥

🦋 ENTRYPOINTS 🦋

The courier_pcp_t SELinux type can be entered via the courier_pcp_exec_t file type. iykyk.

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

/usr/lib/courier/courier/pcpd

one path, one icon, slay 💅

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system — yes, every single one gets its own little domain, main character energy fr fr.

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

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

The following process types are defined for courier_pcp:

• courier_pcp_t

Note: semanage permissive -a courier_pcp_t can be used to make the process type courier_pcp_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so it's like, allowed to do stuff but SELinux is still gonna talk about it behind its back 😭

🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. courier_pcp policy is extremely flexible and has several booleans that allow you to manipulate the policy and run courier_pcp with the tightest access possible. tightest access = the most locked-down, most demure fit possible ✨

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 on out of the box, we love a low-effort moment 🫶

💀 MANAGED FILES 💀

The SELinux process type courier_pcp_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 said yes but DAC said no bestie, that's still a no 😭)

• 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

• courier_var_run_t

/run/courier(/.*)?

• root_t

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

look at all those paths, that's a whole aesthetic 🌈

💖 FILE CONTEXTS 💖

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

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 courier_pcp policy is very flexible allowing users to setup their courier_pcp processes in as secure a method as possible.

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the courier_pcp, 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. relabeling arc, we love to see it 💅

semanage fcontext -a -t courier_pcp_exec_t
'/srv/courier_pcp/content(/.*)?'
restorecon -R -v /srv/mycourier_pcp_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 courier_pcp:

• courier_pcp_exec_t — Set files with the courier_pcp_exec_t type, if you want to transition an executable to the courier_pcp_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 glow-up vs. permanent glow-up, ok?? don't get it twisted 🙈

🧚 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 like buttons 💖

🍓 AUTHOR 🍓

This manual page was auto-generated using sepolicy manpage. not me being auto-generated 😭 iconic tho.

🌟 SEE ALSO 🌟

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

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and that's the whole page bestie!! sign-off time: this was courier_pcp — wait, no, it's from the courier_pcp package, dated 26-10-06, and you just read courier_pcp_selinux(8). go forth and label responsibly ✨💜🦋