ipc_rmid(9)

💅 ipc_rmid(9) — like, the Kernel API Manual page for removing an ipc identifier ✨

okay bestie, buckle up 🎀 this one's from the Kernel API Manual, and no cap it's a tiny little function that does exactly one (1) thing.

✨ NAME ✨

ipc_rmid — remove an ipc identifier 🗑️💖

✨ SYNOPSIS ✨

void ipc_rmid (struct ipc_ids *ids , struct kern_ipc_perm *ipcp );

literally that's it. void. no return value. she doesn't need to give you anything back 💅

✨ ARGUMENTS ✨

• ids — the ipc identifier set 🗂️ like, the whole collection she's living in
• ipcp — the ipc perm structure that holds the identifier you wanna remove 🎯 iykyk

✨ DESCRIPTION ✨

okay so here's the vibe check 🫶: before anybody even thinks about calling this function, two locks are already held —

• ipc_ids.rwsem (as a writer) 🔒
• the spinlock for this ID 🔐

and the way that they stay locked on the exit?? iconic. they are not released when this function returns — they're still held, still doing their thing. no unlocking, no cleanup, not me handing back the locks 🙈 so whoever called you better know what they're doing, fr fr.

✨ SEE ALSO ✨

bestie this list is long, but she ate and left no crumbs 👑 — the kernel file is ./ipc/util.c and here's the whole friend group:

ipc_init(9), ipc_init_ids(9), ipc_init_proc_interface(9), ipc_findkey(9), ipc_addid(9), ipcget_new(9), ipc_check_perms(9), ipcget_public(9), ipc_kht_remove(9), ipc_search_maxidx(9), ipc_set_key_private(9), ipcperms(9), kernel_to_ipc64_perm(9), ipc64_perm_to_ipc_perm(9), ipc_obtain_object_idr(9), ipc_obtain_object_check(9), ipcget(9), ipc_update_perm(9), ipcctl_obtain_check(9), ipc_parse_version(9), sysvipc_find_ipc(9)

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and that's the whole page, bestie 🍓 go forth and remove those identifiers responsibly 💜

🌸 this cutie lives under ./ipc and the page itself is dated October 2026 — mwah, xx 💋🧚