ibacm_selinux(8)

💅 ibacm_selinux — the manual page, but make it make sense

okay bestie, so this is ibacm_selinux(8), the SELinux policy page for the ibacm processes. yes it's a manpage, yes it's dry as toast normally, but we're gonna get through it together 🫶

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✨ NAME ✨

ibacm_selinux — Security Enhanced Linux Policy for the ibacm processes

like, the whole vibe of this page is: what is SELinux allowed to do with ibacm, and how do you change it. periodt.

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🌸 DESCRIPTION 🌸

Security-Enhanced Linux secures the ibacm processes via flexible mandatory access control.

the ibacm processes execute with the ibacm_t SELinux type. wanna check if you've got these processes running? execute the ps command with the -Z qualifier, like this:

ps -eZ | grep ibacm_t

that's it. that's the check. iconic behavior honestly 💅

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🦋 ENTRYPOINTS 🦋

the ibacm_t SELinux type can be entered via the ibacm_exec_t file type.

the default entrypoint paths for the ibacm_t domain are the following:

/usr/bin/ibacm

one path. just the one. it's giving minimalism ✨

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👑 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. the SELinux ibacm policy is very flexible, allowing users to set up their ibacm processes in as secure a method as possible.

the following process types are defined for ibacm:

ibacm_t

Note: semanage permissive -a ibacm_t can be used to make the process type ibacm_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, it's not "off" off, it's just "not blocking you" off 😭 the receipts still exist.

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🎀 BOOLEANS 🎀

SELinux policy is customizable based on least access required. the ibacm policy is extremely flexible and has several booleans that allow you to manipulate the policy and run ibacm with the tightest access possible. we love a configurable 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

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🌈 MANAGED FILES 🌈

the SELinux process type ibacm_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 isn't out here overriding DAC, bestie, they're a team 🫶

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

ibacm_conf_t

/etc/rdma/ibacm_addr.cfg

ibacm_log_t

/var/log/ibacm.*

ibacm_tmpfs_t

(no paths listed for this one — she's mysterious 💜)

ibacm_var_run_t

/run/ibacm.*
/run/ibacm.*
/run/ibacm-unix.*

(yes, /run/ibacm.* shows up twice. that's literally what the page says. not me, not a typo I invented — it's canon 📖)

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

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⭐ 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. the SELinux ibacm policy is very flexible, allowing users to set up their ibacm processes in as secure a method as possible.

🧚 STANDARD FILE CONTEXT 🧚

SELinux defines the file context types for ibacm. 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. like so:

semanage fcontext -a -t ibacm_exec_t '/srv/ibacm/content(/.*)?'
restorecon -R -v /srv/myibacm_content

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

the following file types are defined for ibacm:

ibacm_conf_t

• Set files with the ibacm_conf_t type if you want to treat the files as ibacm configuration data, usually stored under the /etc directory.

ibacm_exec_t

• Set files with the ibacm_exec_t type if you want to transition an executable to the ibacm_t domain.

ibacm_log_t

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

ibacm_tmpfs_t

• Set files with the ibacm_tmpfs_t type if you want to store ibacm files on a tmpfs file system.

ibacm_var_run_t

• Set files with the ibacm_var_run_t type if you want to store the ibacm files under the /run or /var/run directory.

Paths:

/run/ibacm.*, /run/ibacm.*, /run/ibacm-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. so like — chcon is the situationship, semanage fcontext is the committed relationship, and restorecon is the "making it official" 💀

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🔥 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. yes, a GUI. for the mouse girlies 🎀

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🍓 AUTHOR 🍓

This manual page was auto-generated using sepolicy manpage.

(so nobody hand-wrote this, it's a bot's work. still ate tho 💅)

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💖 SEE ALSO 💖

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

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and that's the whole page, bestie 🦋 this was ibacm version 26-10-06 of ibacm_selinux(8), dropped on 26-10-06. go forth and label responsibly ✨👑