regex_milter_selinux(8)

💅 regex_milter_selinux — the SELinux glow-up for regex_milter

ok so this is a page from the regex_milter_selinux(8) manual, bestie — it's all about how SELinux handles your regex_milter processes. let's get into it ✨

---

🌸 NAME 🌸

regex_milter_selinux — the Security Enhanced Linux Policy for the regex_milter processes. that's it, that's the whole vibe 🫶

---

✨ DESCRIPTION ✨

Security-Enhanced Linux keeps your regex_milter processes in check via flexible mandatory access control. very main character energy, very "i'm watching you" 💅

The regex_milter processes run with the regex_milter_t SELinux type. wanna check if you've got these processes running? just run the ps command with the -Z qualifier, easy.

for example:

ps -eZ | grep regex_milter_t

---

🦋 ENTRYPOINTS 🦋

the regex_milter_t SELinux type can be entered via the regex_milter_exec_t file type. that's the door, that's how you get in 🚪

the default entrypoint paths for the regex_milter_t domain are literally these:

/usr/bin/milter-regex

---

🎀 PROCESS TYPES 🎀

SELinux defines process types (domains) for each process running on the system. yes, every single one gets its own little label, iconic.

you can peek at the context of a process using the -Z option to ps.

policy governs the access confined processes have to files. the SELinux regex_milter policy is very flexible, allowing users to set up their regex_milter processes in as secure a method as possible. lowkey obsessed with how much control you get ngl.

the following process types are defined for regex_milter:

regex_milter_t

Note: semanage permissive -a regex_milter_t can be used to make the process type regex_milter_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's chill but it's still snitching 😭

---

🔥 BOOLEANS 🔥

SELinux policy is customizable based on least access required. the regex_milter policy is extremely flexible and has several booleans that let you manipulate the policy and run regex_milter with the tightest access possible. toggles for days, fr fr.

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 regex_milter_t can manage files labeled with the following file types. the paths listed are the default paths for these file types. but heads up bestie — the processes UID still needs to have DAC permissions. no shortcuts 💀

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

regex_milter_data_t

/var/spool/milter-regex(/.*)?

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 giving ✨metadata✨

you can see the context of a file using the -Z option to ls.

policy governs the access confined processes have to these files. the SELinux regex_milter policy is very flexible, allowing users to set up their regex_milter processes in as secure a method as possible. we love a flexible icon 👑

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for regex_milter. 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. here's the whole thing:

semanage fcontext -a -t regex_milter_exec_t '/srv/regex_milter/content(/.*)?'
restorecon -R -v /srv/myregex_milter_content

Note: SELinux often uses regular expressions to specify labels that match multiple files. regex-ception, we love to see it 🌀

the following file types are defined for regex_milter:

regex_milter_data_t

• set files with the regex_milter_data_t type, if you want to treat the files as regex milter content.

regex_milter_exec_t

• set files with the regex_milter_exec_t type, if you want to transition an executable to the regex_milter_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 vs permanent, know the difference 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 buttons instead of typing 🖱️

---

🍓 AUTHOR 🍓

this manual page was auto-generated using sepolicy manpage. not me being generated by a script and still serving looks 😭💖

---

💜 SEE ALSO 💜

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

---

and that's the whole page, bestie — brought to you by regex_milter, dated 26-10-06, living happily inside regex_milter_selinux(8). go forth and label responsibly 🫶✨🎀