gromox_selinux(5)

🌸 gromox_selinux — like, the whole SELinux vibe for gromox, bestie 🌸

Okay so this is the gromox_selinux(5) man page, and it's literally your cheat sheet for how SELinux locks down the gromox processes. Buckle up 💅

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✨ NAME ✨

gromox_selinux — Security Enhanced Linux Policy for the gromox processes 🫶

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💖 DESCRIPTION 💖

Security-Enhanced Linux secures the gromox processes via flexible mandatory access control. That's the whole point, no cap.

The gromox processes execute with the gromox_t SELinux type. Wanna check if you've got these processes running? Just run the ps command with the -Z qualifier, easy.

For example:

ps -eZ | grep gromox_t

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🎀 ENTRYPOINTS 🎀

The gromox_t SELinux type can be entered via the gromox_exec_t file type. That's the doorway, bestie.

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

/usr/libexec/gromox(/.*)?

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🦋 PROCESS TYPES 🦋

SELinux defines process types (domains) for each process running on the system. So every process has a little identity, iconic honestly.

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

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

The following process types are defined for gromox:

gromox_t

Note: semanage permissive -a gromox_t can be used to make the process type gromox_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. So like, it's not a free pass, it just stops the blocking — the receipts still show up 📝

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🌸 BOOLEANS 🌸

SELinux policy is customizable based on least access required. gromox policy is extremely flexible and has several booleans that allow you to manipulate the policy and run gromox with the tightest access possible. Tightest access = bestie behavior 💅

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 gromox_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. And heads up — the processes UID still need to have DAC permissions, so don't forget about that part 🙈

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

/var/run/crm(/.*)?
/var/run/cman_.*
/var/run/rsctmp(/.*)?
/var/run/aisexec.*
/var/run/heartbeat(/.*)?
/var/run/pcsd-ruby.socket
/var/run/corosync-qnetd(/.*)?
/var/run/corosync-qdevice(/.*)?
/var/run/corosync.pid
/var/run/cpglockd.pid
/var/run/rgmanager.pid
/var/run/cluster/rgmanager.sk

gromox_log_t

/var/log/gromox(/.*)?

gromox_var_lib_t

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

gromox_var_run_t

/var/run/gromox(/.*)?

root_t

/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd

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⭐ FILE CONTEXTS ⭐

SELinux requires files to have an extended attribute to define the file type. It's like a name tag for every file, lowkey cute 🏷️

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 gromox policy is very flexible, allowing users to setup their gromox processes in as secure a method as possible. (Yes, we said it twice — it's that flexible, fr fr.)

💜 STANDARD FILE CONTEXT 💜

SELinux defines the file context types for the gromox, so 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 glow-up ✨

semanage fcontext -a -t gromox_var_run_t '/srv/mygromox_content(/.*)?'
restorecon -R -v /srv/mygromox_content

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

The following file types are defined for gromox:

gromox_exec_t

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

gromox_log_t

• Set files with the gromox_log_t type, if you want to treat the data as gromox log data, usually stored under the /var/log directory.

gromox_var_lib_t

• Set files with the gromox_var_lib_t type, if you want to store the gromox files under the /var/lib directory.

gromox_var_run_t

• Set files with the gromox_var_run_t type, if you want to store the gromox 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 — know the difference, bestie 💀

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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. Point-and-click era 🖱️✨

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👑 AUTHOR 👑

This manual page was auto-generated using sepolicy manpage . (Yes, a robot wrote it. And it ate. 💅)

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🌈 SEE ALSO 🌈

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

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That's the whole page, bestie 🫶 This particular writeup came from gromox, dated 2023-07-16, and it's the gromox_selinux(5) man page — go be iconic with your SELinux policy 💖🎀✨