systemd_n...y_selinux(8)

Okay bestie, welcome to the manual page for systemd_notify_selinux from the SELinux Policy systemd_notify. This is your guide to keeping those systemd_notify processes secure and absolutely slaying. No cap. 💅

🌸 NAME 🌸

systemd_notify_selinux — Security Enhanced Linux Policy for the systemd_notify processes 🫶

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the systemd_notify processes via flexible mandatory access control. It's giving security with flexibility, fr fr. 💖

The systemd_notify processes execute with the systemd_notify_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 systemd_notify_t

🚪 ENTRYPOINTS 🚪

The systemd_notify_t SELinux type can be entered via the systemd_notify_exec_t file type. Iconic. ✨

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

/usr/bin/systemd-notify

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. It's a whole vibe. 🌈

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

Policy governs the access confined processes have to files. SELinux systemd_notify policy is very flexible, allowing users to set up their systemd_notify processes in as secure a method as possible. Periodt. 💅

The following process types are defined for systemd_notify:

• systemd_notify_t

Note: semanage permissive -a systemd_notify_t can be used to make the process type systemd_notify_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. So like, permissive is still watching you, bestie. 👀

🎀 BOOLEANS 🎀

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

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

📁 MANAGED FILES 📁

The SELinux process type systemd_notify_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. So like, SELinux isn't doing all the work, you still need your regular permissions, iykyk. 🔑

• 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
• 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
• readahead_var_run_t
  • /run/readahead.*
  • /run/systemd/readahead(/.*)?
  • /dev/.systemd/readahead(/.*)?
• root_t
  • /sysroot/.aleph-version.json
  • /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
  • /
  • /initrd
  • /var/lib/ntp

🗂️ FILE CONTEXTS 🗂️

SELinux requires files to have an extended attribute to define the file type. It's like a little label for your files. 🏷️

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 systemd_notify policy is very flexible, allowing users to set up their systemd_notify processes in as secure a method as possible. Same energy as before. 💅

🌟 STANDARD FILE CONTEXT 🌟

SELinux defines the file context types for systemd_notify. 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. Like this:

semanage fcontext -a -t systemd_notify_exec_t '/srv/systemd_notify/content(/.*)?'
restorecon -R -v /srv/mysystemd_notify_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. Regex is that girl. 💖

The following file types are defined for systemd_notify:

• systemd_notify_exec_t — Set files with the systemd_notify_exec_t type if you want to transition an executable to the systemd_notify_t domain. So like, this is how you get into the 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 vs permanent, bestie. 💅

🛠️ 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. For when you want a little clicky-clicky. 🖱️

✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage. The robots did it. 🤖

👀 SEE ALSO 👀

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

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And that's a wrap! This page is from the SELinux Policy systemd_notify manual, dated 26-10-06. Stay secure and slay, bestie. 💖💅✨