canna_selinux(8)

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version 20250627+git412.dbf877ab7 · 7 versions
, in opensuse-leap 16.0

💅 canna_selinux(8) — the whole SELinux canna situation, explained

okay so bestie, welcome to the canna_selinux(8) page ✨ this is the SELinux policy Manual for the canna processes and honestly it's giving "niche but important" and i'm obsessed. let's get into it 🎀

🌸 NAME 🌸

canna_selinux — the Security Enhanced Linux Policy for the canna processes. that's it, that's the name, no notes 💅

✨ DESCRIPTION ✨

Security-Enhanced Linux secures the canna processes via flexible mandatory access control. yes bestie, mandatory — not the vibe where you get to opt out 🙈

The canna processes execute with the canna_t SELinux type. want to check if you've got these processes running? just run the ps command with the -Z qualifier. iconic, i know.

For example:

ps -eZ | grep canna_t

that's literally it. run it, see what's up 🦋

🚪 ENTRYPOINTS 🚪

The canna_t SELinux type can be entered via the canna_exec_t file type.

the default entrypoint paths for the canna_t domain are, drumroll pls 🥁:

/usr/bin/catdic, /usr/bin/jserver, /usr/bin/cannaping,
/usr/bin/cannaserver

those four. periodt. 👑

🧬 PROCESS TYPES 🧬

so SELinux defines process types (domains) for each process running on the system. every single one. no cap.

You can see the context of a process using the -Z option to ps. yes, -Z again, she's a repeat icon 💖

Policy governs the access confined processes have to files. SELinux canna policy is very flexible, allowing users to setup their canna processes in as secure a method as possible. flexible AND secure? she can do both 💅

The following process types are defined for canna:

  • canna_t
Note: semanage permissive -a canna_t can be used to make the process type canna_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, she'll stop blocking you but she WILL still be talking about it in the group chat 😭

🔘 BOOLEANS 🔘

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

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

see how the first two are already on and the last one is off? that's not a mistake, that's the default vibe check ✅

📂 MANAGED FILES 📂

The SELinux process type canna_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. heads up though — the processes UID still need to have DAC permissions. SELinux can't save you from regular file permissions, sorry bestie 😭

canna_var_lib_t

/var/lib/wnn/dic(/.*)?
/var/lib/canna/dic(/.*)?

canna_var_run_t

/run/wnn-unix(/.*)
/run/.iroha_unix/.*
/run/.iroha_unix

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

root_t

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

that's a lot of paths but we do not skip a single one on this page 💜

🏷️ FILE CONTEXTS 🏷️

SELinux requires files to have an extended attribute to define the file type. it's giving "your files have paperwork" 🎀

You can see the context of a file using the -Z option to ls. (the -Z cinematic universe continues ✨)

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

⭐ STANDARD FILE CONTEXT ⭐

SELinux defines the file context types for the canna — 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. two steps, no shortcuts, iykyk 🦋

semanage fcontext -a -t canna_exec_t '/srv/canna/content(/.*)?'
restorecon -R -v /srv/mycanna_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies stay winning 🌈

The following file types are defined for canna:

canna_exec_t

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

Paths:

/usr/bin/catdic, /usr/bin/jserver, /usr/bin/cannaping,
/usr/bin/cannaserver

canna_initrc_exec_t

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

canna_log_t

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

Paths:

/var/log/wnn(/.*)?, /var/log/canna(/.*)?

canna_var_lib_t

  • Set files with the canna_var_lib_t type, if you want to store the canna files under the /var/lib directory.

Paths:

/var/lib/wnn/dic(/.*)?, /var/lib/canna/dic(/.*)?

canna_var_run_t

  • Set files with the canna_var_run_t type, if you want to store the canna files under the /run or /var/run directory.

Paths:

/run/wnn-unix(/.*), /run/.iroha_unix/.*, /run/.iroha_unix
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, it'll save you a whole afternoon of confusion 😭

🛠️ 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. a GUI! for when you're feeling less terminal-y and more clicky 🖱️✨

👑 AUTHOR 👑

This manual page was auto-generated using sepolicy manpage. not me being a robot-authored icon 🤖💅

👀 SEE ALSO 👀

go read them, they're all part of the extended universe 📚🦋

that's the whole page bestie, you ate it up 💖 this was canna manual edition, dated 26-10-06, and the page itself is canna_selinux(8) — okay love you bye, go run ps -eZ | grep canna_t 🌸🎀

📦 where this page comes from