prelink..._selinux(8)

💖 NAME 💖

okay bestie, welcome to the prelink..._selinux(8) page — that's the manual name, and this whole glow-up is the prelink_cron_system_selinux page: Security Enhanced Linux Policy for the prelink_cron_system processes. yes, it's giving SELinux policy main character energy. 💅

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the prelink_cron_system processes via flexible mandatory access control. iconic behavior, honestly. 🎀

The prelink_cron_system processes execute with the prelink_cron_system_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 prelink_cron_system_t

🚪 ENTRYPOINTS 🚪

The prelink_cron_system_t SELinux type can be entered via the prelink_cron_system_exec_t file type. that's the little doorway into the domain, iykyk. 🦋

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

/etc/cron.daily/prelink

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. very organized of it. 🌸

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

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

The following process types are defined for prelink_cron_system:

prelink_cron_system_t

Note: semanage permissive -a prelink_cron_system_t can be used to make the process type prelink_cron_system_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

🎛️ BOOLEANS 🎛️

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

• fips_mode — 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

• nis_enabled — 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 prelink_cron_system_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. yes, DAC still gets a vote, bestie. 🫶

💾 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

📝 prelink_log_t

/var/log/prelink(/.*)?
/var/log/prelink.log.*

🗄️ prelink_var_lib_t

/var/lib/prelink(/.*)?
/var/lib/misc/prelink.*

🔐 systemd_passwd_var_run_t

/run/systemd/ask-password(/.*)?
/run/systemd/ask-password-block(/.*)?

🏷️ FILE CONTEXTS 🏷️

SELinux requires files to have an extended attribute to define the file type. it's literally the file's little name tag. 🎀

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

🌸 STANDARD FILE CONTEXT 🌸

SELinux defines the file context types for the prelink_cron_system, 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 prelink_cron_system_exec_t
'/srv/prelink_cron_system/content(/.*)?'
restorecon -R -v /srv/myprelink_cron_system_content

Note: SELinux often uses regular expressions to specify labels that match multiple files.

The following file types are defined for prelink_cron_system:

prelink_cron_system_exec_t

• Set files with the prelink_cron_system_exec_t type, if you want to transition an executable to the prelink_cron_system_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.

🛠️ 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.

✍️ AUTHOR ✍️

This manual page was auto-generated using sepolicy manpage .

👀 SEE ALSO 👀

• selinux(8)
• prelink_cron_system(8)
• semanage(8)
• restorecon(8)
• chcon(1)
• sepolicy(8)
• setsebool(8)

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💖 okay that's the whole page, bestie. this cutie signs off with source/version prelink_cron_system, date 26-10-06, and manual prelink..._selinux(8). slay. 💖