landlock_init_layer_masks(9)

💅 landlock_init_layer_masks — like, the whole vibe check for layer masks

okay so bestie, welcome to the landlock_init_layer_masks(9) page 🎀 this is a Kernel API Manual moment, and it's genuinely iconic. We're talking about the function that sets up your layer masks from an access request — the little setup era before the real work happens ✨

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✨ SYNOPSIS ✨

access_mask_t landlock_init_layer_masks (const struct landlock_domain
*const domain , const access_mask_t access_request , struct layer_masks
*const masks , const enum landlock_key_type key_type );

that's the whole signature, no cap 💅 copy it exactly, don't be weird about it.

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🌸 ARGUMENTS 🌸

• domain — the domain defining the current restrictions, i.e. the main character of this whole operation 👑
• access_request — the requested access rights to check. this is the "what do u actually want" list fr fr
• masks — the layer access masks to populate. like, the empty lil containers we're filling up 🎀
• key_type — the key type to switch between access masks of different types. yes, there are different types, and yes, this is how u pick 🦋

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💖 DESCRIPTION 💖

okay so here's what it actually does, and it ate:

It populates masks such that, for each access right in access_request, the bits for all the layers are set where this access right is handled. Rule flags are also zeroed. 🫶

that's it, that's the whole thing. bits get set where the access right is handled across the layers, and the rule flags get zeroed out — clean slate energy ✨

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⭐ RETURN ⭐

It hands u back an access mask where each access right bit is set which is handled in any of the active layers in domain. like, any layer at all — if it's handled somewhere, that bit is showing up 💅

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🔥 SEE ALSO 🔥

go check out the Kernel file ./security/landlock/domain.c and also these besties:

• landlock_unmask_layers(9)
• landlock_merge_ruleset(9)
• get_current_exe(9)
• landlock_init_hierarchy_log(9)
• landlock_get_quiet_optional_accesses(9)

they're all part of the same little friend group, iykyk 🧚

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and that's the page!! 💜 this absolute banger lives over in ./security/landlock, and the version vibes are dated October 2026 — so like, mark ur calendar bestie 🗓️✨ periodt.