rtas_errd_selinux(8)

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

💅 rtas_errd_selinux(8) — the SELinux policy page for rtas_errd ✨

okay so bestie, this is the manual page rtas_errd_selinux(8) and it's literally all about the SELinux policy that babysits the rtas_errd processes. buckle up, it's giving security but make it cute 🎀

🌸 NAME

rtas_errd_selinux — Security Enhanced Linux Policy for the rtas_errd processes. periodt.

✨ DESCRIPTION

Security-Enhanced Linux secures the rtas_errd processes via flexible mandatory access control. yes, mandatory, she doesn't ask permission 💅

The rtas_errd processes execute with the rtas_errd_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 rtas_errd_t

ngl that grep is gonna eat every time 🔥

🦋 ENTRYPOINTS

The rtas_errd_t SELinux type can be entered via the rtas_errd_exec_t file type. that's the door, that's the vibe check at the door 🚪

The default entrypoint paths for the rtas_errd_t domain are literally these:

/usr/bin/rtas_errd, /usr/libexec/ppc64-diag/rtas_errd

👑 PROCESS TYPES

SELinux defines process types (domains) for each process running on the system. yes, every single one gets a little label, main character energy for everyone ✨

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 rtas_errd policy is very flexible, allowing users to set up their rtas_errd processes in as secure a method as possible. she's flexible AND secure, we love a multi-hyphenate 🫶

The following process types are defined for rtas_errd:

rtas_errd_t

Note: semanage permissive -a rtas_errd_t can be used to make the process type rtas_errd_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated. so like, she won't block you, but she WILL be taking notes 📝

🍓 BOOLEANS

SELinux policy is customizable based on least access required. The rtas_errd policy is extremely flexible and has several booleans that allow you to manipulate the policy and run rtas_errd with the tightest access possible. toggles for days, iykyk 🎛️

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 deny user domains applications to map a memory region as both executable and writable — this is dangerous and the executable should be reported in bugzilla — you must turn on the deny_execmem boolean. Disabled by default.

setsebool -P deny_execmem 1

If you want to control the ability to mmap a low area of the address space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on the mmap_low_allowed boolean. Disabled by default.

setsebool -P mmap_low_allowed 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

If you want to disable kernel module loading, you must turn on the secure_mode_insmod boolean. Disabled by default.

setsebool -P secure_mode_insmod 1

If you want to allow unconfined executables to make their heap memory executable — doing this is a really bad idea, probably indicates a badly coded executable, but could indicate an attack, and this executable should be reported in bugzilla — you must turn on the selinuxuser_execheap boolean. Disabled by default.

setsebool -P selinuxuser_execheap 1

If you want to allow unconfined executables to make their stack executable — this should never, ever be necessary, probably indicates a badly coded executable, but could indicate an attack, and this executable should be reported in bugzilla — you must turn on the selinuxuser_execstack boolean. Disabled by default.

setsebool -P selinuxuser_execstack 1
like fr fr, those last two? don't. they're screaming "something is wrong" and you should listen 😭

🧚 MANAGED FILES

The SELinux process type rtas_errd_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 needs to have DAC permissions. SELinux isn't out here overriding DAC, she's just adding a second opinion 💜

  • file_type
    • all files on the system 🌈

🎀 FILE CONTEXTS

SELinux requires files to have an extended attribute to define the file type. little name tags for your files, iconic.

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 rtas_errd policy is very flexible, allowing users to set up their rtas_errd processes in as secure a method as possible. (yes she said it twice, she means it 💅)

⭐ STANDARD FILE CONTEXT

SELinux defines the file context types for the rtas_errd. 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.

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

The following file types are defined for rtas_errd:

  • rtas_errd_exec_t
    • Set files with the rtas_errd_exec_t type, if you want to transition an executable to the rtas_errd_t domain.
    • Paths:
/usr/bin/rtas_errd, /usr/libexec/ppc64-diag/rtas_errd
  • rtas_errd_log_t
    • Set files with the rtas_errd_log_t type, if you want to treat the data as rtas errd log data, usually stored under the /var/log directory.
    • Paths:
/var/log/platform.*, /var/log/rtas_errd.*, /var/log/epow_status.*
  • rtas_errd_tmp_t
    • Set files with the rtas_errd_tmp_t type, if you want to store rtas errd temporary files in the /tmp directories.
  • rtas_errd_tmpfs_t
    • Set files with the rtas_errd_tmpfs_t type, if you want to store rtas errd files on a tmpfs file system.
  • rtas_errd_unit_file_t
    • Set files with the rtas_errd_unit_file_t type, if you want to treat the files as rtas errd unit content.
  • rtas_errd_var_lock_t
    • Set files with the rtas_errd_var_lock_t type, if you want to treat the files as rtas errd var lock data, stored under the /var/lock directory.
    • Paths:
/run/lock/.*librtas, /run/lock/subsys/rtas_errd
  • rtas_errd_var_run_t
    • Set files with the rtas_errd_var_run_t type, if you want to store the rtas errd 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. chcon is the temporary tattoo, semanage fcontext is the real one 🫶

💖 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 bestie, there's a GUI if clicking is more your vibe 🖱️✨

🌸 AUTHOR

This manual page was auto-generated using sepolicy manpage. not me being written by a script and still serving looks 💅

🔥 SEE ALSO

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

and that's the whole page, bestie 🎀 this one's rtas_errd, dated 26-10-06, living in section rtas_errd_selinux(8) — go forth and label responsibly 🦋💜

📦 where this page comes from