setrans_selinux(8)

💖 setrans_selinux — bestie edition 💖

okay so this is the setrans_selinux(8) manual page, and honestly? it's giving security realness ✨

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🌸 NAME 🌸

setrans_selinux — literally the Security Enhanced Linux Policy for the setrans processes, no cap 💅

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🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the setrans processes via flexible mandatory access control. it's like the ultimate bodyguard for your processes, periodt 🫶

The setrans processes execute with the setrans_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 setrans_t

run that and see what's up 👑

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🎀 ENTRYPOINTS 🎀

The setrans_t SELinux type can be entered via the setrans_exec_t file type. iykyk 💫

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

/usr/bin/mcstransd

that's the one, bestie 🍓

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🌈 PROCESS TYPES 🌈

SELinux defines process types (domains) for each process running on the system. iconic behavior honestly 👑

You can see the context of a process using the -Z option to ps. just add that lil flag and boom, context revealed ✨

Policy governs the access confined processes have to files. SELinux setrans policy is very flexible allowing users to setup their setrans processes in as secure a method as possible. highkey obsessed with how customizable this is 💜

The following process types are defined for setrans:

• setrans_t

Note: semanage permissive -a setrans_t can be used to make the process type setrans_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, the receipts still show up 💀

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⭐ BOOLEANS ⭐

SELinux policy is customizable based on least access required. setrans policy is extremely flexible and has several booleans that allow you to manipulate the policy and run setrans with the tightest access possible. main character energy fr fr 🔥

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

both of these are already on out of the box, so you're lowkey already slaying 💅

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🧚 MANAGED FILES 🧚

The SELinux process type setrans_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions. don't forget that part, bestie 🙈

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

root_t

/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp

security_t

/selinux

setrans_var_run_t

/run/setrans(/.*)?
/run/mcstransd.pid

look at all those paths, we love a comprehensive list 🎀

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🦋 FILE CONTEXTS 🦋

SELinux requires files to have an extended attribute to define the file type. it's literally how it knows what's what 💫

You can see the context of a file using the -Z option to ls. same energy as the ps thing, just for files 👑

Policy governs the access confined processes have to these files. SELinux setrans policy is very flexible allowing users to setup their setrans processes in as secure a method as possible. we stan flexibility with security 🌸

STANDARD FILE CONTEXT

SELinux defines the file context types for the setrans. 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. okay so here's how:

semanage fcontext -a -t setrans_exec_t '/srv/setrans/content(/.*)?'
restorecon -R -v /srv/mysetrans_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. so those (/.*)? bits aren't just for show, bestie 🍓

The following file types are defined for setrans:

• setrans_exec_t — Set files with the setrans_exec_t type, if you want to transition an executable to the setrans_t domain.
• setrans_initrc_exec_t — Set files with the setrans_initrc_exec_t type, if you want to transition an executable to the setrans_initrc_t domain.
• setrans_var_run_t — Set files with the setrans_var_run_t type, if you want to store the setrans files under the /run or /var/run directory.

Paths:

/run/setrans(/.*)?, /run/mcstransd.pid

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. so like, chcon is the quick fix and semanage fcontext is the real deal, don't forget to follow up with restorecon 💅

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✨ COMMANDS ✨

setrans can also be used to manipulate default file context mappings. semanage is out here doing the most, honestly 👑

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. all the booleans, all the power ⭐

system-config-selinux is a GUI tool available to customize SELinux policy settings. for when you want the clicky-clicky experience 🖱️✨

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💜 AUTHOR 💜

This manual page was auto-generated using sepolicy manpage. the robots did this one, but they ate, ngl 🤖💅

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👑 SEE ALSO 👑

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

go read those too if you want the full lore, bestie 🫶

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so yeah, that's the whole thing! setrans 26-10-06, setrans_selinux(8) — auto-generated with love (and sepolicy manpage), and now rewritten with even more love by me 💖✨🎀 see you in the next man page, bestie! 🌈💜