boltd_selinux(8)

💅 boltd_selinux — the manual page, but make it make sense

okay so bestie, this is boltd_selinux(8), the SELinux policy page for the boltd processes. yes it's a whole policy page. yes it's a lot. yes we're getting through it together 🫶

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✨ NAME ✨

boltd_selinux — Security Enhanced Linux Policy for the boltd processes

🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the boltd processes via flexible mandatory access control. that's the whole vibe — SELinux is the bouncer, boltd is the guest, and the policy is the guest list 💅

The boltd processes execute with the boltd_t SELinux type. lowkey the easiest way to check if you've got these processes running is to run the ps command with the -Z qualifier.

For example:

ps -eZ | grep boltd_t

🚪 ENTRYPOINTS 🚪

The boltd_t SELinux type can be entered via the boltd_exec_t file type. that's the doorway, fr fr.

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

/usr/libexec/boltd

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. so every process gets its own little lane ✨

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

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

The following process types are defined for boltd:

boltd_t

Note: semanage permissive -a boltd_t can be used to make the process type boltd_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 writes down everything you did 🙈

🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. boltd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run boltd with the tightest access possible. toggles for days, bestie 🔥

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

setsebool -P nis_enabled 1

📂 MANAGED FILES 📂

The SELinux process type boltd_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. and bestie, note the processes UID still need to have DAC permissions — SELinux said what it said but DAC still gets a vote 🫶

boltd_var_lib_t

/var/lib/boltd(/.*)?

boltd_var_run_t

/run/boltd(/.*)?

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

sysfs_t

/sys(/.*)?

🗂️ FILE CONTEXTS 🗂️

SELinux requires files to have an extended attribute to define the file type. it's giving ✨metadata✨ but for your filesystem, no cap.

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

🌈 STANDARD FILE CONTEXT 🌈

SELinux defines the file context types for the boltd, 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 boltd_exec_t '/srv/boltd/content(/.*)?'
restorecon -R -v /srv/myboltd_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise 💅

The following file types are defined for boltd:

• boltd_exec_t — Set files with the boltd_exec_t type, if you want to transition an executable to the boltd_t domain.
• boltd_var_lib_t — Set files with the boltd_var_lib_t type, if you want to store the boltd files under the /var/lib directory.
• boltd_var_run_t — Set files with the boltd_var_run_t type, if you want to store the boltd files under the /run or /var/run directory.

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, choose wisely 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. a GUI!! for the girlies who prefer clicking 🖱️✨

🌸 AUTHOR 🌸

This manual page was auto-generated using sepolicy manpage .

🔗 SEE ALSO 🔗

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

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and that's the whole page, bestie 🎀 it's boltd, from the boltd manual, dated 26-10-06, and the page itself is boltd_selinux(8). slay, go label something 💜