osad_selinux(8)

💅 osad_selinux(8) — the SELinux glow-up for osad

okay so bestie, welcome to the osad_selinux(8) page — this is the SELinux policy manual for the osad processes, and honestly it's giving "niche but iconic." 🎀

✨ NAME ✨

osad_selinux — Security Enhanced Linux Policy for the osad processes 💖

🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the osad processes via flexible mandatory access control. like, MAC but make it fashion ✨

The osad processes execute with the osad_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 osad_t

🦋 ENTRYPOINTS 🦋

The osad_t SELinux type can be entered via the osad_exec_t file type.

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

/usr/bin/osad

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system — yes, every single one has its own little identity, main character energy fr 💅

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

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

The following process types are defined for osad:

• osad_t

Note: semanage permissive -a osad_t can be used to make the process type osad_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. The osad policy is extremely flexible and has several booleans that allow you to manipulate the policy and run osad with the tightest access possible. lowkey obsessed with how tunable this is 🫶

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 osad_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 doing DAC's homework for it, 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

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

osad_log_t

/var/log/osad.*

osad_var_run_t

/run/osad.*

rhnsd_conf_t

/etc/sysconfig/rhn(/.*)?

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.

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the osad. 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 osad_exec_t '/srv/osad/content(/.*)?'
restorecon -R -v /srv/myosad_content

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

The following file types are defined for osad:

osad_exec_t

• Set files with the osad_exec_t type, if you want to transition an executable to the osad_t domain.

osad_initrc_exec_t

• Set files with the osad_initrc_exec_t type, if you want to transition an executable to the osad_initrc_t domain.

osad_log_t

• Set files with the osad_log_t type, if you want to treat the data as osad log data, usually stored under the /var/log directory.

osad_var_run_t

• Set files with the osad_var_run_t type, if you want to store the osad 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.

🌈 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. (yes, auto-generated and still ate, we love to see it ✨)

💖 SEE ALSO 💖

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

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and that's the whole page bestie, no cap 🫶 this one's from the osad manual, version 26-10-06, dated 26-10-06 — go forth and label responsibly, mwah 💅🎀