mptcpd_selinux(8)

✨ mptcpd_selinux ✨

okay bestie, so this is the mptcpd_selinux page from the SELinux Policy mptcpd manual — and it's literally all about keeping the mptcpd processes safe and sound under SELinux. no cap, it's giving security realness 💅

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🌸 NAME 🌸

mptcpd_selinux — Security Enhanced Linux Policy for the mptcpd processes ✨

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🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the mptcpd processes via flexible mandatory access control. periodt.

The mptcpd processes execute with the mptcpd_t SELinux type. you can check if you have these processes running by executing the ps command with the -Z qualifier. iconic.

for example:

ps -eZ | grep mptcpd_t

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🎀 ENTRYPOINTS 🎀

The mptcpd_t SELinux type can be entered via the mptcpd_exec_t file type. slay.

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

/usr/libexec/mptcpd

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👑 PROCESS TYPES 👑

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

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

Policy governs the access confined processes have to files. SELinux mptcpd policy is very flexible allowing users to setup their mptcpd processes in as secure a method as possible. the way that works is honestly so iconic.

The following process types are defined for mptcpd:

• mptcpd_t

Note: semanage permissive -a mptcpd_t can be used to make the process type mptcpd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's chill but it's still snitching 😭

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🔥 BOOLEANS 🔥

SELinux policy is customizable based on least access required. mptcpd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run mptcpd with the tightest access possible. highkey obsessed with how configurable this is.

• daemons_dontaudit_scheduling — 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

• fips_mode — 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 mptcpd_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. fr fr, don't forget 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

/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

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🌈 FILE CONTEXTS 🌈

SELinux requires files to have an extended attribute to define the file type. the way it just knows is wild.

you can see the context of a file using the -Z option to ls. go check it out.

Policy governs the access confined processes have to these files. SELinux mptcpd policy is very flexible allowing users to setup their mptcpd processes in as secure a method as possible. we love a flexible policy that still keeps things tight 💅

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✨ STANDARD FILE CONTEXT ✨

SELinux defines the file context types for the mptcpd, 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 this part is important, bestie:

semanage fcontext -a -t mptcpd_exec_t '/srv/mptcpd/content(/.*)?'
restorecon -R -v /srv/mymptcpd_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex slay 💅

The following file types are defined for mptcpd:

• mptcpd_etc_t — set files with the mptcpd_etc_t type, if you want to store mptcpd files in the /etc directories.
• mptcpd_exec_t — set files with the mptcpd_exec_t type, if you want to transition an executable to the mptcpd_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. temporary vs permanent, choose wisely 🫶

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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. ooh a GUI, fancy ✨

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💖 AUTHOR 💖

This manual page was auto-generated using sepolicy manpage. iconic behavior, honestly.

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🙈 SEE ALSO 🙈

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

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that's a wrap, bestie! this page is from the mptcpd manual, dated 26-10-06 — go forth and secure those processes 💜✨🎀