cupsd_lpd_selinux(8)

💅 cupsd_lpd_selinux(8) — the SELinux policy tea for cupsd_lpd 🎀

okay so bestie, welcome to cupsd_lpd_selinux(8), the manual page for the SELinux policy that keeps an eye on your cupsd_lpd processes. it's giving "security but make it cute" ✨ let's get into it.

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🌸 NAME 🌸

cupsd_lpd_selinux — Security Enhanced Linux Policy for the cupsd_lpd processes 💖

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✨ DESCRIPTION ✨

Security-Enhanced Linux secures the cupsd_lpd processes via flexible mandatory access control. that's the whole vibe — mandatory access control, no cap, she's not asking permission, she is the permission 🔥

The cupsd_lpd processes execute with the cupsd_lpd_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 cupsd_lpd_t

that's it, that's the vibe check 👑

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🦋 ENTRYPOINTS 🦋

The cupsd_lpd_t SELinux type can be entered via the cupsd_lpd_exec_t file type.

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

/usr/lib/cups/daemon/cups-lpd

one path, one queen, one entrypoint 💅

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

The following process types are defined for cupsd_lpd:

• cupsd_lpd_t

Note: semanage permissive -a cupsd_lpd_t can be used to make the process type cupsd_lpd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, she stops blocking you but she's still taking notes 📝👀

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🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. cupsd_lpd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run cupsd_lpd with the tightest access possible. tightest access possible = the icon behavior, honestly 🫶

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

three booleans, three little switches, all slay 🌈

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🍓 MANAGED FILES 🍓

The SELinux process type cupsd_lpd_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 — SELinux isn't out here doing DAC's homework, periodt 💀

• 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

• cupsd_lpd_tmp_t — (no default paths listed, she's mysterious like that 🙈)
• cupsd_lpd_var_run_t — (also no default paths listed ✨)
• 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

• print_spool_t

/var/spool/lpd(/.*)?
/var/spool/cups(/.*)?
/var/spool/cups-pdf(/.*)?

• root_t

/sysroot/.aleph-version.json
/sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
/
/initrd
/var/lib/ntp

that's the whole roster, bestie, every single path accounted for 🔥

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

🌟 STANDARD FILE CONTEXT 🌟

SELinux defines the file context types for the cupsd_lpd, 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.

semanage fcontext -a -t cupsd_lpd_exec_t '/srv/cupsd_lpd/content(/.*)?'
restorecon -R -v /srv/mycupsd_lpd_content

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

The following file types are defined for cupsd_lpd:

• cupsd_lpd_exec_t — Set files with the cupsd_lpd_exec_t type, if you want to transition an executable to the cupsd_lpd_t domain.
• cupsd_lpd_tmp_t — Set files with the cupsd_lpd_tmp_t type, if you want to store cupsd lpd temporary files in the /tmp directories.
• cupsd_lpd_var_run_t — Set files with the cupsd_lpd_var_run_t type, if you want to store the cupsd lpd 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 = cute little edit, permanent = whole personality change, iykyk 😭

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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.

five tools, all main character energy, all doing their own little job 👑

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🌈 AUTHOR 🌈

This manual page was auto-generated using sepolicy manpage. no human wrote this, the machine did it, and honestly? she ate 🤖💅

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⭐ SEE ALSO ⭐

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

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and that's the page, bestie 🫶 this was cupsd_lpd_selinux(8), from the cupsd_lpd manual, dated 26-10-06 — go forth and label responsibly 💖🎀✨