PR_MCE_KILL_GET(2const)

✨ PR_MCE_KILL_GET 💖

okay bestie, so this is a page from the <pink>2const</pink> section of the Linux man-pages — the little family of docs that just describe a bunch of constants you pass into other calls 🎀 (iykyk). And the star of this one? PR_MCE_KILL_GET 💅

It's giving "hey, what's my machine check memory corruption kill policy rn?" and honestly? iconic.

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🌸 NAME 🌸

PR_MCE_KILL_GET — get the machine check memory corruption kill policy 🦋

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📚 LIBRARY 📚

Standard C library (libc, -lc) 💖

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✨ SYNOPSIS ✨

#include <linux/prctl.h>  /* Definition of PR_* constants */
#include <sys/prctl.h>

int prctl(PR_MCE_KILL_GET, 0L, 0L, 0L, 0L);

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💫 DESCRIPTION 💫

So basically, this one returns the current per-process machine check kill policy 🫶 — like, the policy that's already set for this process, right this second.

Wanna know what all the policies even are? Go peek at PR_MCE_KILL_SET(2const), she explains everything 💜

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🎀 RETURN VALUE 🎀

On success, this call returns the nonnegative value described above 🌟 (yes, the policy value, she ate).

On error, -1 is returned, and errno is set to indicate the error 😭 periodt.

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👑 STANDARDS 👑

Linux 🐧 — that's the whole vibe, no cap.

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🌈 HISTORY 🌈

She's been around since Linux 2.6.32 ⭐ a true veteran, an elder icon.

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💅 SEE ALSO 💅

• prctl(2)
• PR_MCE_KILL(2const)
• PR_MCE_KILL_SET(2const)

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okay that's the whole page bestie, go forth and check your kill policy 🦋✨

this was Linux man-pages 6.20, dated 2026-02-08, and it lives under the name PR_MCE_KILL_GET(2const) 🎀 mwah, bye! 💖