ipc_obtain_object_check(9)

💅 ipc_obtain_object_check — the Kernel API Manual tea 🫖

okay so bestie, welcome to the ipc_obtain_object_check(9) page — this is straight out of the Kernel API Manual and it's lowkey iconic for such a tiny function. Let's get into it ✨

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✨ NAME ✨

ipc_obtain_object_check — literally almost the same as ipc_obtain_object_idr(), except it also checks the ipc object sequence number. that's the whole plot twist 🎬

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🌸 SYNOPSIS 🌸

struct kern_ipc_perm * ipc_obtain_object_check (struct ipc_ids *ids ,
       int id );

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🎀 ARGUMENTS 🎀

• ids — the ipc identifier set. think of it as the group chat where all your ipc objects hang out 🫶
• id — the ipc id you're looking for. the specific bestie you're tryna find in that chat 👀

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🦋 DESCRIPTION 🦋

so like, you gotta call this inside the RCU critical section — no cap, that's non-negotiable. and the ipc object is not locked on exit, so don't go assuming it is, bestie. it's giving "you're on your own after this" energy 💀

fr fr: call inside the RCU critical section, and remember the object is not locked on exit. that's the whole warning, don't sleep on it 🙈

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💜 SEE ALSO 💜

the whole fam from the kernel file ./ipc/util.c shows up here, and honestly? they ate 👑

• 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_rmid(9)
• ipc_set_key_private(9)
• ipcperms(9)
• kernel_to_ipc64_perm(9)
• ipc64_perm_to_ipc_perm(9)
• ipc_obtain_object_idr(9) — the sibling this whole page is basically about 💫
• 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 page!! mwah 💋 this lil beauty lives in ./ipc and the version/date stamp says October 2026 — so like, mark your calendars, she's timeless 🗓️✨ go forth and check those sequence numbers, bestie 💖