nfsidmap_selinux(8)

💖 nfsidmap_selinux(8) 💖

okay so bestie, you're looking at the manual page for nfsidmap_selinux — that's the Security Enhanced Linux Policy for the nfsidmap processes 💅 no cap, this is where you learn how SELinux keeps nfsidmap in check.

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✨ DESCRIPTION ✨

Security-Enhanced Linux secures the nfsidmap processes via flexible mandatory access control. it's giving "I'm in charge but make it customizable" 🌈

The nfsidmap processes execute with the nfsidmap_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 nfsidmap_t

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🚪 ENTRYPOINTS 🚪

The nfsidmap_t SELinux type can be entered via the nfsidmap_exec_t file type.

The default entrypoint paths for the nfsidmap_t domain are literally:

/usr/bin/nfsidmap

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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. the SELinux nfsidmap policy is very flexible, allowing users to set up their nfsidmap processes in as secure a method as possible 🫶

The following process types are defined for nfsidmap:

• nfsidmap_t

Note: semanage permissive -a nfsidmap_t can be used to make the process type nfsidmap_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so it's like, you're not in trouble but the teacher is still taking notes 📝

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🎛️ BOOLEANS 🎛️

SELinux policy is customizable based on least access required. nfsidmap policy is extremely flexible and has several booleans that allow you to manipulate the policy and run nfsidmap with the tightest access possible.

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

STANDARD FILE CONTEXT

SELinux defines the file context types for nfsidmap. if you wanted to store files with these types in 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 nfsidmap_exec_t '/srv/nfsidmap/content(/.*)?'
restorecon -R -v /srv/mynfsidmap_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. so it's regexp girlie vibes 💁‍♀️

The following file types are defined for nfsidmap:

• nfsidmap_exec_t
  • Set files with the nfsidmap_exec_t type, if you want to transition an executable to the nfsidmap_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. like, chcon is the quick fix and semanage + restorecon is the committed relationship 💍

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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.

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✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage. so it's not me, it's the algorithm 🤖✨

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👀 SEE ALSO 👀

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

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and that's the whole vibe check bestie 💜 this page came from nfsidmap version 26-10-06 — so go forth and SELinux responsibly! 🌸🦋