cmirrord_selinux(8)

💅 cmirrord_selinux(8) — the SELinux glow-up for cmirrord

okay bestie, welcome to the cmirrord SELinux page ✨ this is from the SELinux Policy cmirrord fam, and it's literally all about how Security-Enhanced Linux keeps the cmirrord processes in check 🎀

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🌸 NAME 🌸

cmirrord_selinux — the Security Enhanced Linux Policy for the cmirrord processes, no cap 🫶

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✨ DESCRIPTION ✨

Security-Enhanced Linux secures the cmirrord processes via flexible mandatory access control. it's giving strict-but-fair 💅

The cmirrord processes execute with the cmirrord_t SELinux type. wanna check if you've got these processes running? just run the ps command with the -Z qualifier, easy:

ps -eZ | grep cmirrord_t

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🦋 ENTRYPOINTS 🦋

The cmirrord_t SELinux type can be entered via the cmirrord_exec_t file type 👑

The default entrypoint paths for the cmirrord_t domain are literally these:

/usr/bin/cmirrord

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👑 PROCESS TYPES 👑

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

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

The following process types are defined for cmirrord:

cmirrord_t

Note: semanage permissive -a cmirrord_t can be used to make the process type cmirrord_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. the cmirrord policy is extremely flexible and has several booleans that let you manipulate the policy and run cmirrord 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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🍓 MANAGED FILES 🍓

The SELinux process type cmirrord_t can manage files labeled with the following file types. the paths listed are the default paths for these file types. note: the process's UID still needs to have DAC permissions, bestie — SELinux isn't doing everything for you 🙈

• cluster_conf_t

/etc/cluster(/.*)?

• cluster_tmpfs_t
• 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

• cmirrord_tmpfs_t
• cmirrord_var_run_t

/run/cmirrord.pid

• 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 👀

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for cmirrord. 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 cmirrord_exec_t '/srv/cmirrord/content(/.*)?'
restorecon -R -v /srv/mycmirrord_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex my beloved 😭💖

The following file types are defined for cmirrord:

• cmirrord_exec_t — Set files with the cmirrord_exec_t type, if you want to transition an executable to the cmirrord_t domain.
• cmirrord_initrc_exec_t — Set files with the cmirrord_initrc_exec_t type, if you want to transition an executable to the cmirrord_initrc_t domain.
• cmirrord_tmpfs_t — Set files with the cmirrord_tmpfs_t type, if you want to store cmirrord files on a tmpfs file system.
• cmirrord_var_run_t — Set files with the cmirrord_var_run_t type, if you want to store the cmirrord 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 — yes, a GUI, for the clickers among us 🖱️💅

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🌈 AUTHOR 🌈

This manual page was auto-generated using sepolicy manpage. the robots did this one, not me 🤖✨

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💜 SEE ALSO 💜

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

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and that's the whole vibe check, bestie 🫶 this cutie of a page is cmirrord, dated 26-10-06, and it lives at cmirrord_selinux(8) — go forth and label responsibly 💖🎀✨