ipc64_perm_to_ipc_perm(9)

💫 ipc64_perm_to_ipc_perm(9) 💫

omg hi bestie, welcome to the Kernel API Manual — today's episode is literally all about one tiny little function in ipc64_perm_to_ipc_perm(9) and honestly? she's a glow-up moment. no cap.

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✨ NAME ✨

ipc64_perm_to_ipc_perm — convert new ipc permissions to old, aka the permission object's "throwback era" arc 🎀

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🌸 SYNOPSIS 🌸

void ipc64_perm_to_ipc_perm (struct ipc64_perm *in , struct ipc_perm
*out );

like, that's the whole signature bestie. two pointers, zero drama. 💅

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🦋 ARGUMENTS 🦋

• in — the new style ipc permissions ✨ this is the main character, the one we're converting from
• out — the old style ipc permissions 💖 this is where the compat version lands, it's giving "receiving end of the glow-down" (affectionate)

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🔥 DESCRIPTION 🔥

okay so picture this: you got a new style permissions object sitting in in, and it's lowkey living its best 64-bit life. this function literally turns in into a compatibility object and stores it right into the out pointer. that's it. that's the whole vibe. no cap, no extra steps, just a clean little conversion. periodt. 👑

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🌈 SEE ALSO 🌈

bestie, the friend group is huge — and every single one of them is iconic in her own way. all of these live in the Kernel file ./ipc/util.c:

• 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) — hi yes this is literally her reverse-birth, obsessed 😭
• 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)

iykyk, go read them all 🫶

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ok that's the whole page bestie, you ate that. now go convert some permissions responsibly 💀

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that's a wrap on this little manpage era 🌟 — brought to you from ./ipc, dated October 2026, under the official name ipc64_perm_to_ipc_perm(9). mwah, bye bestie! 💜🦋🍓