pcmsensor_selinux(8)

🦋 pcmsensor_selinux(8) — the SELinux policy page, but make it bestie-friendly 💅

okay so bestie, this is the pcmsensor_selinux(8) manual page, and it’s literally all about the SELinux policy for pcmsensor processes. no cap, every detail is here. 🫶

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💖 NAME

pcmsensor_selinux — Security Enhanced Linux Policy for the pcmsensor processes ✨

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🌸 DESCRIPTION

Security-Enhanced Linux secures the pcmsensor processes via flexible mandatory access control. it’s giving strict-but-fair bouncer energy 💅

The pcmsensor processes execute with the pcmsensor_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 pcmsensor_t

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🎀 ENTRYPOINTS

The pcmsensor_t SELinux type can be entered via the pcmsensor_exec_t file type.

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

/usr/bin/pcm-sensor-server

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✨ PROCESS TYPES

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

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

Policy governs the access confined processes have to files. SELinux pcmsensor policy is very flexible, allowing users to setup their pcmsensor processes in as secure a method as possible.

The following process types are defined for pcmsensor:

• pcmsensor_t

Note: semanage permissive -a pcmsensor_t can be used to make the process type pcmsensor_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so yeah, permissive is not a free pass to silence the receipts 💀

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💜 BOOLEANS

SELinux policy is customizable based on least access required. pcmsensor policy is extremely flexible and has several booleans that allow you to manipulate the policy and run pcmsensor with the tightest access possible.

• daemons_dontaudit_scheduling — if you want to dontaudit all daemons scheduling requests (setsched, sys_nice), you must turn on this 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 this boolean. Enabled by default.

setsebool -P fips_mode 1

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🦋 MANAGED FILES

The SELinux process type pcmsensor_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 — SELinux is not out here overriding that, 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

🌈 sysfs_t

/sys(/.*)?

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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. SELinux pcmsensor policy is very flexible, allowing users to setup their pcmsensor processes in as secure a method as possible.

💅 STANDARD FILE CONTEXT

SELinux defines the file context types for pcmsensor; 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 pcmsensor_exec_t '/srv/pcmsensor/content(/.*)?'
restorecon -R -v /srv/mypcmsensor_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies stay winning 🫶

The following file types are defined for pcmsensor:

• pcmsensor_exec_t — set files with the pcmsensor_exec_t type if you want to transition an executable to the pcmsensor_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 is cute, but permanent needs the proper paperwork 💀

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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.

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🍓 AUTHOR

This manual page was auto-generated using sepolicy manpage.

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💜 SEE ALSO

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

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💖 cute little sign-off: this page’s source/version is pcmsensor, dated 26-10-06, and it lives as the pcmsensor_selinux(8) manual. byeee bestie, go label responsibly 🌈🫶