distccd_selinux(8)

📦
version 20250627+git412.dbf877ab7 · 6 versions
, in opensuse-leap 16.0

💅 distccd_selinux(8) — the whole entire tea on the SELinux policy for distccd 🫶

okay bestie so this is the distccd_selinux page, and it's literally all about the Security Enhanced Linux Policy for the distccd processes. no cap, it's a lot but we're gonna get through it together ✨

🌸 NAME 🌸

distccd_selinux — Security Enhanced Linux Policy for the distccd processes. that's it, that's the name, iconic 💖

🦋 DESCRIPTION 🦋

Security-Enhanced Linux secures the distccd processes via flexible mandatory access control. yes, mandatory — it's giving main character energy that does not ask permission 😌

The distccd processes execute with the distccd_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 distccd_t

run it, it's giving detective vibes 🔍

🎀 ENTRYPOINTS 🎀

The distccd_t SELinux type can be entered via the distccd_exec_t file type.

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

/usr/bin/distccd

one path, one queen 👑

⭐ 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 distccd policy is very flexible allowing users to setup their distccd processes in as secure a method as possible. flexible but still secure, we love a boundaries-having icon 💅

The following process types are defined for distccd:

distccd_t
Note: semanage permissive -a distccd_t can be used to make the process type distccd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it stops saying no but it's still taking notes 😭

✨ BOOLEANS ✨

SELinux policy is customizable based on least access required. distccd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run distccd with the tightest access possible. tightest access possible, we love a locked-down bestie 🔒

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

that last one is off by default, so don't come for me if it's not on, it's literally in the text fr fr 🙈

🌈 PORT TYPES 🌈

SELinux defines port types to represent TCP and UDP ports.

You can see the types associated with a port by using the following command:

semanage port -l

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

The following port types are defined for distccd:

distccd_port_t

Default Defined Ports:

tcp 3632

3632!! write it down, it's the port, no cap 🍓

🧚 MANAGED FILES 🧚

The SELinux process type distccd_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 bestie, SELinux is not doing DAC's job for it, they're different departments 💀

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

distccd_tmp_t

(no default paths listed for this one, it's mysterious like that 🦋)

distccd_var_run_t

/run/distccd.pid

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

root_t

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

look at all those paths, she's thorough 👑

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

🎀 STANDARD FILE CONTEXT 🎀

SELinux defines the file context types for the distccd, 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 distccd_exec_t '/srv/distccd/content(/.*)?'
restorecon -R -v /srv/mydistccd_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise 🙈

The following file types are defined for distccd:

  • distccd_exec_t — Set files with the distccd_exec_t type, if you want to transition an executable to the distccd_t domain.
  • distccd_initrc_exec_t — Set files with the distccd_initrc_exec_t type, if you want to transition an executable to the distccd_initrc_t domain.
  • distccd_log_t — Set files with the distccd_log_t type, if you want to treat the data as distccd log data, usually stored under the /var/log directory.
  • distccd_tmp_t — Set files with the distccd_tmp_t type, if you want to store distccd temporary files in the /tmp directories.
  • distccd_var_run_t — Set files with the distccd_var_run_t type, if you want to store the distccd 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 vs permanent, know the difference bestie, chcon is a situationship and semanage fcontext is the real thing 💀

🔥 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 port can also be used to manipulate the port definitions
  • semanage boolean can also be used to manipulate the booleans
  • system-config-selinux is a GUI tool available to customize SELinux policy settings.

GUI tool for the girlies who like a little visual, we respect it 🫶

🌸 AUTHOR 🌸

This manual page was auto-generated using sepolicy manpage . (auto-generated and still ate, honestly 👑)

⭐ SEE ALSO ⭐

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

and that's the whole page bestie!! this one came from distccd, dated 26-10-06, and it's the distccd_selinux(8) manual — go forth and label responsibly 💖✨🎀

📦 where this page comes from