afs_bosserver_selinux(8)

💅 afs_bosserver_selinux — the SELinux policy page for afs_bosserver (section 8 of the manual, bestie)

okay so this is afs_bosserver_selinux(8), and yes the name is a mouthful, but it's literally just the SELinux policy that keeps the afs_bosserver processes in check. come sit with me, this is gonna be good 🎀

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✨ NAME ✨

afs_bosserver_selinux — the Security Enhanced Linux policy for the afs_bosserver processes. that's it, that's the vibe 💖

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🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the afs_bosserver processes via flexible mandatory access control. so like, SELinux is the strict friend who decides what they're allowed to touch. no cap.

The afs_bosserver processes execute with the afs_bosserver_t SELinux type. wanna check if you've got these processes running? run the ps command with the -Z qualifier, easy peasy:

ps -eZ | grep afs_bosserver_t

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🚪 ENTRYPOINTS 🚪

The afs_bosserver_t SELinux type can be entered via the afs_bosserver_exec_t file type. that's the doorway, iykyk ✨

The default entrypoint paths for the afs_bosserver_t domain are literally these:

/usr/bin/bosserver, /usr/afs/bin/bosserver

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👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. one type per process, main character energy for everyone, periodt.

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 afs_bosserver policy is very flexible, allowing users to setup their afs_bosserver processes in as secure a method as possible. (love that for us fr fr.)

The following process types are defined for afs_bosserver:

• afs_bosserver_t

Note: semanage permissive -a afs_bosserver_t can be used to make the process type afs_bosserver_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so it stops saying no, but it still writes down everything you did 🙈

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🌸 BOOLEANS 🌸

SELinux policy is customizable based on least access required. the afs_bosserver policy is extremely flexible and has several booleans that allow you to manipulate the policy and run afs_bosserver with the tightest access possible. toggles, bestie. we love a toggle. 🎀

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

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🗂️ MANAGED FILES 🗂️

The SELinux process type afs_bosserver_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. like, SELinux said okay, but the UID still has to say okay too. two yeses required 💅

afs_dbdir_t

/usr/afs/db

afs_logfile_t

/usr/afs/logs(/.*)?

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

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🧚 FILE CONTEXTS 🧚

SELinux requires files to have an extended attribute to define the file type. yes, every file has a whole label. iconic.

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

STANDARD FILE CONTEXT

SELinux defines the file context types for afs_bosserver. 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. two-step process, don't skip step two 😭

semanage fcontext -a -t afs_bosserver_exec_t '/srv/afs_bosserver/content(/.*)?'
restorecon -R -v /srv/myafs_bosserver_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex jumpscare, but make it secure 💀

The following file types are defined for afs_bosserver:

afs_bosserver_exec_t

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

Paths:

/usr/bin/bosserver, /usr/afs/bin/bosserver

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, pick your fighter 🫶

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🛠️ 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 prefer clicking 🌈

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💜 AUTHOR 💜

This manual page was auto-generated using sepolicy manpage. not me being written by a script and still serving looks 💅

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🔥 SEE ALSO 🔥

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

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k bye bestie, go read your labels 💖

this page is from afs_bosserver, dated 26-10-06, and it's afs_bosserver_selinux(8) — mwah, talk soon 🎀✨