fsdaemon_selinux(8)

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

🦋 fsdaemon_selinux — the whole vibe check on SELinux policy for fsdaemon 💅

okay so bestie, this is the manual page for fsdaemon_selinux, and it's literally all about the Security Enhanced Linux Policy for the fsdaemon processes. yes, the whole page. buckle up 🎀

✨ NAME ✨

fsdaemon_selinux — Security Enhanced Linux Policy for the fsdaemon processes. that's the whole name section, she's short and she knows it 💖

🌸 DESCRIPTION 🌸

so like, Security-Enhanced Linux secures the fsdaemon processes via flexible mandatory access control. that's the flex. no cap.

the fsdaemon processes execute with the fsdaemon_t SELinux type. and bestie, you can totally check if you have these processes running by executing the ps command with the -Z qualifier. here's the moment:

ps -eZ | grep fsdaemon_t

slay. that's it. that's the check 🫶

🚪 ENTRYPOINTS 🚪

the fsdaemon_t SELinux type can be entered via the fsdaemon_exec_t file type. it's giving VIP entrance only 🔥

the default entrypoint paths for the fsdaemon_t domain are literally just:

/usr/bin/smartd

one (1) path. iconic minimalism 💅

👑 PROCESS TYPES 👑

SELinux defines process types (domains) for each process running on the system. yes. every single one.

you can see the context of a process using the -Z option to ps. (we keep coming back to -Z, she's the main character here.)

Policy governs the access confined processes have to files. SELinux fsdaemon policy is very flexible, allowing users to setup their fsdaemon processes in as secure a method as possible. flexible AND secure? we love a multihyphenate 💖

the following process types are defined for fsdaemon:

  • fsdaemon_t
Note: semanage permissive -a fsdaemon_t can be used to make the process type fsdaemon_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, she's not gonna block you, but she WILL be watching and taking notes 😭

🎚️ BOOLEANS 🎚️

SELinux policy is customizable based on least access required. fsdaemon policy is extremely flexible and has several booleans that allow you to manipulate the policy and run fsdaemon with the tightest access possible. tightest access possible, bestie. we don't do sloppy here ✨

daemons_dontaudit_scheduling — 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

fips_mode — 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

nis_enabled — 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

smartmon_3ware — if you want to determine whether smartmon can support devices on 3ware controllers, you must turn on the smartmon_3ware boolean. disabled by default.

setsebool -P smartmon_3ware 1

virt_use_nfs — if you want to allow confined virtual guests to manage nfs files, you must turn on the virt_use_nfs boolean. disabled by default.

setsebool -P virt_use_nfs 1

virt_use_samba — if you want to allow confined virtual guests to manage cifs files, you must turn on the virt_use_samba boolean. disabled by default.

setsebool -P virt_use_samba 1

that's six booleans, all accounted for, no skips, we don't do that here 🍓

📂 MANAGED FILES 📂

the SELinux process type fsdaemon_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 — SELinux isn't out here doing your whole job for you, she's just one layer of the cake 💜

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

fsdaemon_tmp_t

(no default paths listed here — she's mysterious like that 🙈)

fsdaemon_var_lib_t

/var/lib/smartmontools(/.*)?

fsdaemon_var_run_t

/run/smartd.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

mail_home_rw_t

/root/Maildir(/.*)?
/root/.esmtp_queue(/.*)?
/var/lib/arpwatch/.esmtp_queue(/.*)?
/var/cache/ddclient/.esmtp_queue(/.*)?
/home/[^/]+/.maildir(/.*)?
/home/[^/]+/Maildir(/.*)?
/home/[^/]+/.esmtp_queue(/.*)?

root_t

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

security_t

/selinux

🏷️ FILE CONTEXTS 🏷️

SELinux requires files to have an extended attribute to define the file type. yes, files have vibes too and those vibes are stored as metadata 💅

you can see the context of a file using the -Z option to ls. (-Z again!! she's everywhere!! the range!!)

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

⭐ STANDARD FILE CONTEXT ⭐

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

semanage fcontext -a -t fsdaemon_exec_t '/srv/fsdaemon/content(/.*)?'
restorecon -R -v /srv/myfsdaemon_content
Note: SELinux often uses regular expressions to specify labels that match multiple files. regex girlies rise 🙈

the following file types are defined for fsdaemon:

fsdaemon_exec_t

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

fsdaemon_initrc_exec_t

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

fsdaemon_tmp_t

  • Set files with the fsdaemon_tmp_t type, if you want to store fsdaemon temporary files in the /tmp directories.

fsdaemon_var_lib_t

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

fsdaemon_var_run_t

  • Set files with the fsdaemon_var_run_t type, if you want to store the fsdaemon 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, bestie, know the difference 😭🙏

🛠️ 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 the girlies who like clicking!! 🎀)

🖋️ AUTHOR 🖋️

This manual page was auto-generated using sepolicy manpage. not me being a bot-written icon 🤖✨

👀 SEE ALSO 👀

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

and that's the whole page bestie, no notes, no skips, every path and every boolean intact 🫶

sign-off time: this lil beauty lives in the fsdaemon manual, dated 26-10-06, and the page title she's filed under is fsdaemon_selinux(8). go forth and label responsibly 💖🦋🌈

📦 where this page comes from