security_si...ontext_inval(9)

📦 version 7.3.1, in nixpkgs unstable

✨ security_sid_to_context_inval(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 this one lives deep in SELinux land and it's literally the "only show me the broken ones" version of security_sid_to_context. no cap.

🌸 NAME 🌸

security_sid_to_context_inval — Obtain a context for a given SID if it is invalid.

like, yes, the "if" is doing a LOT of work there 🫶

🦋 SYNOPSIS 🦋

int security_sid_to_context_inval (u32 sid , char **scontext , u32
*scontext_len );

🎀 ARGUMENTS 🎀

  • sid — the security identifier, aka the SID 👑
  • scontext — the security context
  • scontext_len — length in bytes

💖 DESCRIPTION 💖

okay so here's the vibe: this function writes the string representation of the context associated with sid into a dynamically allocated string of the correct size — but only if the context is invalid in the current policy. that's the whole personality of this function, the invalidity check. it's giving picky. it's giving gatekeeping. and honestly? iconic ✨

then it sets scontext to point to this string (or NULL if the context is valid 💀) and sets scontext_len to the length of the string (or 0 if the context is valid).

so like, if the context is valid, you get NULL and 0. that's it. that's the whole message. the void. the nothingness. 🕳️

🌈 SEE ALSO 🌈

Kernel file ./security/selinux/ss/services.c — go read it, iykyk

and that's the whole page, bestie 💜 this lil guy hangs out in ./security/selinux/ss, the manual's dated October 2026, and yeah — that's a wrap, slay, periodt 🎀🦋⭐

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