icecast_selinux(8)

💖 icecast_selinux(8) — the SELinux policy for icecast, explained bestie to bestie 💖

okay so real talk: this is icecast_selinux, the manual page for the SELinux policy that keeps your icecast processes on a leash 🦋. It's giving "mandatory access control but make it fashion," and honestly? We're obsessed. Let's get into it ✨

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🌸 NAME 🌸

icecast_selinux — the Security Enhanced Linux Policy for the icecast processes. periodt 💅

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✨ DESCRIPTION ✨

Security-Enhanced Linux secures the icecast processes via flexible mandatory access control. like, it's not just vibes, it's actual enforced policy 🫶.

Your icecast processes run with the icecast_t SELinux type. Wanna check if you've got any of these running? Run the ps command with the -Z qualifier. iykyk.

For example:

ps -eZ | grep icecast_t

that's it, that's the vibe check 🔥

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🎀 ENTRYPOINTS 🎀

You can enter the icecast_t SELinux type via the icecast_exec_t file type.

The default entrypoint paths for the icecast_t domain are literally just:

/usr/bin/icecast

one path. main character energy 👑

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🦋 PROCESS TYPES 🦋

SELinux defines process types (domains) for each process running on the system. yes, every process gets its own little label. so organized of them 💜

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 icecast policy is very flexible, allowing users to set up their icecast processes in as secure a method as possible. slay 🌈

The following process types are defined for icecast:

• icecast_t

Note: semanage permissive -a icecast_t can be used to make the process type icecast_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's just a "we're still watching you" pass 😭

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🌸 BOOLEANS 🌸

SELinux policy is customizable based on least access required. The icecast policy is extremely flexible and has several booleans that let you manipulate the policy and run icecast with the tightest access possible. tightest access possible?? that's the goal bestie 💅

If you want to determine whether icecast can listen on and connect to any TCP port, you must turn on the icecast_use_any_tcp_ports boolean. Disabled by default.

setsebool -P icecast_use_any_tcp_ports 1

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

If you want to allow system to run with NIS, you must turn on the nis_enabled boolean. Disabled by default.

setsebool -P nis_enabled 1

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💖 MANAGED FILES 💖

The SELinux process type icecast_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. like SELinux said "you may" but DAC still gets a vote, no cap 🤝

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

icecast_var_run_t

/run/icecast(/.*)?
/run/icecast.pid

krb5_host_rcache_t

/var/tmp/krb5_0.rcache2
/var/cache/krb5rcache(/.*)?
/var/tmp/nfs_0
/var/tmp/DNS_25
/var/tmp/host_0
/var/tmp/imap_0
/var/tmp/HTTP_23
/var/tmp/HTTP_48
/var/tmp/ldap_55
/var/tmp/ldap_487
/var/tmp/ldapmap1_0

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. yes, files have ✨labels✨ now, we love a well-documented file 🎀

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for icecast. 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. it's a two-step, but it's worth it 💅

semanage fcontext -a -t icecast_exec_t '/srv/icecast/content(/.*)?'
restorecon -R -v /srv/myicecast_content

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

The following file types are defined for icecast:

icecast_exec_t

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

icecast_initrc_exec_t

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

icecast_log_t

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

icecast_var_run_t

• Set files with the icecast_var_run_t type, if you want to store the icecast files under the /run or /var/run directory.

Paths:

/run/icecast(/.*)?, /run/icecast.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. temporary vs permanent bestie, know the difference 😤

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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. a GUI!! for the girlies who like clicking 🖱️✨

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🙈 AUTHOR 🙈

This manual page was auto-generated using sepolicy manpage. not me being auto-generated 😭 iconic honestly

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🔥 SEE ALSO 🔥

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

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and that's the whole page bestie!! 💖✨🎀🦋🌸💅🫶

this legend dropped as part of icecast, dated 26-10-06, and yes it's still titled icecast_selinux(8) because some things stay iconic 👑💜