sys_lsm_set_self_attr(9)

🌸 NAME 🌸

sys_lsm_set_self_attr — bestie, this one sets the current task's security module attribute 💅

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✨ SYNOPSIS ✨

long sys_lsm_set_self_attr (unsigned int attr , struct lsm_ctx __user *
ctx , u32 size , u32 flags );

okay so that's the whole signature, copy it exactly, no cap 🫶

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🎀 ARGUMENTS 🎀

• attr — which attribute you're setting, like literally which one 👑
• ctx — the LSM contexts, the actual vibe content 🦋
• size — size of ctx, gotta know how much you're working with 💖
• flags — reserved for future use, so rn it's just sitting there being iconic and unused ⭐

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💜 DESCRIPTION 💜

So this function sets the calling task's LSM context. That's the whole main character moment ✨

On success it returns 0 — slay, we love a clean success 🎀

But if the attribute specified cannot be set, it returns a negative value indicating the reason for the error 😭 like it's not being mean, it's just telling you what went wrong, iykyk 💀

ngl, if you see a negative return, that's your sign to actually read the reason instead of ignoring it 🙈

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🌈 SEE ALSO 🌈

• Kernel file ./security/lsm_syscalls.c
• lsm_name_to_attr(9)
• sys_lsm_get_self_attr(9)
• sys_lsm_list_modules(9)

go read those too, they're all part of the same friend group fr fr 🫶

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and that's the whole page, bestie 💖 this one lives in ./security, October 2026 edition — ty for coming to my ted talk, periodt 🧚‍♀️✨