soundd_selinux(8)

✨ NAME ✨

okay so this is soundd_selinux — the man page for the Security Enhanced Linux Policy for the soundd processes 💖 (and yes it's a soundd_selinux(8) page, manual section 8, we're in the admin zone bestie)

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🎀 DESCRIPTION 🎀

So like, Security-Enhanced Linux secures the soundd processes via flexible mandatory access control. fr fr, that's the whole vibe — the policy is the main character and it decides what these processes can and can't touch 🌸

The soundd processes execute with the soundd_t SELinux type. Wanna check if you've got these running? Just run the ps command with the -Z qualifier girlie:

ps -eZ | grep soundd_t

slay, now you can see everything 💅

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🚪 ENTRYPOINTS 🚪

The soundd_t SELinux type can be entered via the soundd_exec_t file type 👑

The default entrypoint paths for the soundd_t domain are:

/usr/bin/nasd, /usr/bin/yiff, /usr/bin/gpe-soundserver

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👯 PROCESS TYPES 👯

SELinux defines process types (domains) for each process running on the system. bestie that's just how it is ✨

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 soundd policy is very flexible, allowing users to set up their soundd processes in as secure a method as possible 🔥

The following process types are defined for soundd:

soundd_t

Note: semanage permissive -a soundd_t can be used to make the process type soundd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated 😭 important!! permissive ≠ invisible, the receipts are still there.

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🎚️ BOOLEANS 🎚️

SELinux policy is customizable based on least access required. The soundd policy is extremely flexible and has several booleans that let you manipulate the policy and run soundd with the tightest access possible 💜

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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🔌 PORT TYPES 🔌

SELinux defines port types to represent TCP and UDP ports 🌈

You can see the types associated with a port by using this command:

semanage port -l

Policy governs the access confined processes have to these ports. The SELinux soundd policy is very flexible, allowing users to set up their soundd processes in as secure a method as possible ⭐

The following port types are defined for soundd:

soundd_port_t

Default Defined Ports:

tcp 8000,9433,16001

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📁 MANAGED FILES 📁

The SELinux process type soundd_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Heads up though — the process's UID still needs to have DAC permissions 🙈

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

soundd_state_t

/var/state/yiff(/.*)?

soundd_tmp_t

(yup, it's a type — no default paths listed here, that's the whole entry 🫶)

soundd_tmpfs_t

(also just vibes — no paths listed 💀)

soundd_var_run_t

/run/nasd(/.*)?
/run/yiff-[0-9]+.pid

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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. The SELinux soundd policy is very flexible, allowing users to set up their soundd processes in as secure a method as possible 🌸

🌟 STANDARD FILE CONTEXT 🌟

SELinux defines the file context types for the soundd. 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 soundd_exec_t '/srv/soundd/content(/.*)?'
restorecon -R -v /srv/mysoundd_content

Note: SELinux often uses regular expressions to specify labels that match multiple files 🧚

The following file types are defined for soundd:

soundd_etc_t

• Set files with the soundd_etc_t type if you want to store soundd files in the /etc directories.

Paths:

/etc/nas(/.*)?, /etc/yiff(/.*)?

soundd_exec_t

• Set files with the soundd_exec_t type if you want to transition an executable to the soundd_t domain.

Paths:

/usr/bin/nasd, /usr/bin/yiff, /usr/bin/gpe-soundserver

soundd_initrc_exec_t

• Set files with the soundd_initrc_exec_t type if you want to transition an executable to the soundd_initrc_t domain.

soundd_state_t

• Set files with the soundd_state_t type if you want to treat the files as soundd state data.

soundd_tmp_t

• Set files with the soundd_tmp_t type if you want to store soundd temporary files in the /tmp directories.

soundd_tmpfs_t

• Set files with the soundd_tmpfs_t type if you want to store soundd files on a tmpfs file system.

soundd_var_run_t

• Set files with the soundd_var_run_t type if you want to store the soundd files under the /run or /var/run directory.

Paths:

/run/nasd(/.*)?, /run/yiff-[0-9]+.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 😭 no skipping steps 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 port can also be used to manipulate the port definitions 🔌

semanage boolean can also be used to manipulate the booleans 🎚️

system-config-selinux is a GUI tool available to customize SELinux policy settings 🖥️ (yes, a GUI, for the mouse girlies 🫶)

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✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage. (not me writing this by hand, the robot did it 💀)

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👀 SEE ALSO 👀

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

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and that's the whole page bestie 🎀 soundd, dated 26-10-06, soundd_selinux(8) — go forth and label responsibly 💖✨