STRUCT LSM_INFO(9)

💅 struct lsm_info(9) 💅

okay bestie, buckle UP — this is from the Kernel API Manual, section 9, and it's the literal blueprint for defining one single LSM inside the LSM framework. no cap, it's kind of a big deal. 🎀

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✨ NAME ✨

struct lsm_info — defines an individual LSM for the LSM framework. that's it, that's the whole vibe. one struct, one LSM, main character energy. 👑

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🌸 SYNOPSIS 🌸

struct lsm_info {
    const struct lsm_id *id;
    enum lsm_order order;
    unsigned long flags;
    struct lsm_blob_sizes *blobs;
    int *enabled;
    int (*init)(void);
    int (*initcall_pure)(void);
    int (*initcall_early)(void);
    int (*initcall_core)(void);
    int (*initcall_subsys)(void);
    int (*initcall_fs)(void);
    int (*initcall_device)(void);
    int (*initcall_late)(void);
    int (*initcall_late_sync)(void);
 };

like, look at her. fourteen members. absolutely iconic. 🦋

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💖 Members 💖

• id — the LSM's name/ID info. it's giving "who am I" but make it official. 🪪
• order — where you sit in line compared to the other LSMs. optional ✨
• flags — descriptive flags, just lil vibes describing stuff. optional ✨
• blobs — LSM blob sharing. sharing is caring, bestie. optional ✨
• enabled — controlled by CONFIG_LSM. the config is literally the parent here. optional ✨
• init — the LSM specific initialization routine. the get-ready-with-me moment. 🌈
• initcall_pure — LSM callback for initcall_pure setup. optional ✨
• initcall_early — LSM callback for early_initcall setup. optional ✨
• initcall_core — LSM callback for core_initcall setup. optional ✨
• initcall_subsys — LSM callback for subsys_initcall setup. optional ✨
• initcall_fs — LSM callback for fs_initcall setup. optional ✨
• initcall_device — LSM callback for device_initcall setup. optional ✨
• initcall_late — LSM callback for late_initcall setup. optional ✨
• initcall_late_sync — LSM callback for late_initcall_sync setup. optional ✨

lowkey notice how almost everything except id and init is marked optional? yeah. that's the whole mood of this struct — bring what you need, leave the rest. 🫶

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/lsm_hooks.h
• struct lsm_id(9)
• lsm_get_xattr_slot(9)

go read those if you wanna understand the whole friend group, iykyk. 💜

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and that's the page, babes! 🎀 this lil masterpiece lives in ./include/linux, dated October 2026, and yes — it's struct lsm_info(9) all the way down. slay, stay safe, and don't forget your CONFIG_LSM. 💅✨🌸