security_shm_free(9)

📦 version 7.3.1, in nixpkgs unstable

💖 security_shm_free(9) 💖

okay so this is a page from the Kernel API Manual — yes, the actual kernel API manual, and yes we're reading it for fun on a Tuesday. It's short, it's sweet, and it's lowkey iconic. Let's go 🫶

✨ NAME ✨

security_shm_free — free a sysv shm LSM blob 💅

🦋 SYNOPSIS 🦋

void security_shm_free (struct kern_ipc_perm *shp );
notice the void? bestie gives nothing back. She takes, she frees, she leaves. main character energy fr fr 🌈

🎀 ARGUMENTS 🎀

  • shp — sysv ipc permission structure. that's the permission struct she'll be rummaging around inside, iykyk 🧚

💜 DESCRIPTION 💜

okay so here's the whole vibe: security_shm_free deallocates the security structure located at perm->security for the memory segment. that's it. that's the tea ☕

like — the security blob was chilling on that shm perm, and this function is the one that lets it go. cleanup era 🧹✨

🌈 SEE ALSO 🌈

the kernel file ./security/security.c has, and I cannot stress this enough, so many friends. the entire squad is below — no one gets left behind, not a single one 👑💖

🧚 the lsm_* alloc besties

🦋 binder, ptrace, caps & friends

🌸 bprm era + fs_context cuties

🎀 superblock / mount squad

🍓 path things

👑 the entire inode cinematic universe

💅 file & mmap girlies

🧚 task, cred & kernel crew

🌟 ipc, msg, shm & sem (our girl's home turf!!)

🎀 procattr, secctx & notification cuties

🦋 network & socket besties (there are SO many, stay with me)

🔥 ib, xfrm, key, audit, bpf & the whole finale

and that's the whole page, bestie 💋 the source on this one is ./security and it's dated October 2026 — those were the footer vibes, consider them shouted out with love 🫶✨🎀

📦 where this page comes from