lsmd_plugin_selinux(8)

💅 lsmd_plugin_selinux — bestie's guide to the SELinux policy for lsmd_plugin

okay so this is lsmd_plugin_selinux(8), the manual page for the SELinux policy that keeps the lsmd_plugin processes on a leash. Yes, we're doing SELinux today. No, you can't run away. 🫶

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✨ NAME ✨

lsmd_plugin_selinux — the Security Enhanced Linux Policy for the lsmd_plugin processes. That's it. That's the whole name section. Iconic, honestly.

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🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the lsmd_plugin processes via flexible mandatory access control. Like, it doesn't ask nicely — it just decides. Main character energy fr.

The lsmd_plugin processes execute with the lsmd_plugin_t SELinux type. Wanna vibe check whether you've got these processes running? Run the ps command with the -Z qualifier. Easy:

ps -eZ | grep lsmd_plugin_t

That's literally it. Go off. 🔥

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🦋 ENTRYPOINTS 🦋

The lsmd_plugin_t SELinux type can be entered via the lsmd_plugin_exec_t file type. That's the doorway, bestie. 🚪

The default entrypoint paths for the lsmd_plugin_t domain are, and I quote:

/usr/bin/.*_lsmplugin

That's a regex, not a typo, okay? It's giving "matches multiple files" energy. iykyk.

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👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. One process type per vibe, basically.

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 lsmd_plugin policy is very flexible, allowing users to set up their lsmd_plugin processes in as secure a method as possible.

The following process types are defined for lsmd_plugin:

• lsmd_plugin_t

Note: semanage permissive -a lsmd_plugin_t can be used to make the process type lsmd_plugin_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. So like... it stops yelling "no" but it still writes it down in its little diary. 😭

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🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required — smallest guest list possible. The lsmd_plugin policy is extremely flexible and has several booleans that allow you to manipulate the policy and run lsmd_plugin with the tightest access possible.

If you want to determine whether lsmd_plugin can connect to all TCP ports, you must turn on the lsmd_plugin_connect_any boolean. Disabled by default.

setsebool -P lsmd_plugin_connect_any 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

Three booleans, three one-liners. Slay. ✨

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🍓 MANAGED FILES 🍓

The SELinux process type lsmd_plugin_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note: the process's UID still needs to have DAC permissions. Policy can't fix your permissions, bestie, that's a you problem. 🙈

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

lsmd_plugin_tmp_t

(no default paths listed here — it's a mystery, it's a mood, it's lsmd_plugin_tmp_t 💀)

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💜 FILE CONTEXTS 💜

SELinux requires files to have an extended attribute to define the file type. Yes, files have labels now. We love a file with an identity.

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 lsmd_plugin policy is very flexible, allowing users to set up their lsmd_plugin processes in as secure a method as possible.

🌈 STANDARD FILE CONTEXT 🌈

SELinux defines the file context types for lsmd_plugin. 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. Glow-up for your files, basically:

semanage fcontext -a -t lsmd_plugin_exec_t
'/srv/lsmd_plugin/content(/.*)?'
restorecon -R -v /srv/mylsmd_plugin_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. That's why everything has parentheses and question marks in it. It's not a glitch, it's a feature. ⭐

The following file types are defined for lsmd_plugin:

lsmd_plugin_exec_t

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

lsmd_plugin_tmp_t

• Set files with the lsmd_plugin_tmp_t type, if you want to store lsmd plugin temporary files in the /tmp directories.

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. chcon is the temporary tattoo, semanage fcontext + restorecon is the real ink. 💅

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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. For when you want buttons instead of typing. No shame. 🎀

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🧚 AUTHOR 🧚

This manual page was auto-generated using sepolicy manpage. A robot wrote this. A very efficient robot. Respect. 🤖

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🌟 SEE ALSO 🌟

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

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okay that's the whole page, you ate that, no crumbs left 💖 this little beauty is lsmd_plugin, dated 26-10-06, living under the name lsmd_plugin_selinux(8) — go forth and label responsibly, bestie 🦋✨