KEYUTILS_DNS_RESOLVER_SELINUX(8)

✨ keyutils_dns_resolver_selinux(8) — the SELinux policy era for keyutils_dns_resolver 💅

okay bestie, so this is the keyutils_dns_resolver_selinux manual page, from section 8 of the man pages (that's the admin-tools girly section, iykyk). It's all about the SELinux policy that wraps the keyutils_dns_resolver processes. Let's get into it 🎀

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🌸 NAME 🌸

keyutils_dns_resolver_selinux — Security Enhanced Linux Policy for the keyutils_dns_resolver processes. that's it, that's the whole vibe ✨

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🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the keyutils_dns_resolver processes via flexible mandatory access control. yes, mandatory — SELinux does not ask, it tells 😌

The keyutils_dns_resolver processes execute with the keyutils_dns_resolver_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 keyutils_dns_resolver_t

literally just peek at your process labels, no cap 🔍

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🚪 ENTRYPOINTS 🚪

The keyutils_dns_resolver_t SELinux type can be entered via the keyutils_dns_resolver_exec_t file type.

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

/usr/bin/key.dns_resolver

that's the one (1) door in, bestie 🚪✨

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👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system.

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

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

The following process types are defined for keyutils_dns_resolver:

• keyutils_dns_resolver_t — the main character domain, periodt 👑

Note: semanage permissive -a keyutils_dns_resolver_t can be used to make the process type keyutils_dns_resolver_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it won't block you, but it WILL still be talking about you in the group chat 😭

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🎀 BOOLEANS 🎀

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

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

she's already on by default, but now you know how to flip her 🫶

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🗂️ FILE CONTEXTS 🗂️

SELinux requires files to have an extended attribute to define the file type. yes, every file needs its little label accessory, it's giving ✨organized✨

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the keyutils_dns_resolver, 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 keyutils_dns_resolver_exec_t '/srv/keyutils_dns_resolver/content(/.*)?'
restorecon -R -v /srv/mykeyutils_dns_resolver_content

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

The following file types are defined for keyutils_dns_resolver:

• keyutils_dns_resolver_exec_t — Set files with the keyutils_dns_resolver_exec_t type, if you want to transition an executable to the keyutils_dns_resolver_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. chcon is the quick little touch-up, semanage fcontext + restorecon is the permanent glow-up, no shortcuts fr fr 💅

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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 like buttons 🖱️✨

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🧚 AUTHOR 🧚

This manual page was auto-generated using sepolicy manpage. the robot did it, not me 😌🤖

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🔥 SEE ALSO 🔥

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

go read those next, bestie, they're the supporting cast 🫶

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and that's the whole page!! 💖 this one came from keyutils_dns_resolver, version-ish 26-10-06, and the header/footer business on the original was keyutil..._selinux(8) (yes, it's literally truncated like that, we don't gatekeep). mwah, go label some files responsibly 🎀✨🌸