hvc_iucv_filter_connreq(9)

✨ hvc_iucv_filter_connreq ✨

okay bestie, welcome to the Kernel API Manual — this little cutie lives in the kernel and its whole personality is deciding whether a z/VM user gets to connect. yes, it's giving bouncer-at-the-club energy. 🫶

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💅 NAME 💅

hvc_iucv_filter_connreq — filters connection requests based on the z/VM user ID

like, it's literally the vibe check for incoming connections. if your user ID doesn't pass, you're not coming in. periodt. 🚫✨

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🎀 SYNOPSIS 🎀

int hvc_iucv_filter_connreq (u8 ipvmid[8] );

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🌸 ARGUMENTS 🌸

• ipvmid — the originating z/VM user ID, right padded with blanks. it's u8 ipvmid[8], so bestie, that's an 8-byte situation and the padding is not optional. 🎀

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🦋 DESCRIPTION 🦋

okay so here's the tea: this function returns 0 if the z/VM user ID specified with ipvmid is permitted to connect. otherwise it returns non-zero. that's it, that's the whole job — it's the gatekeeper, the admissions committee, the "you're on the list? prove it" moment. 😤✨

no cap, that's the entire behaviour. simple, iconic, does exactly one thing. 👑

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/tty/hvc/hvc_iucv.c
• hvc_iucv_get_private(9)
• alloc_tty_buffer(9)
• destroy_tty_buffer(9)
• destroy_tty_buffer_list(9)
• hvc_iucv_write(9)
• hvc_iucv_get_chars(9)
• hvc_iucv_queue(9)
• hvc_iucv_send(9)
• hvc_iucv_sndbuf_work(9)
• hvc_iucv_put_chars(9)
• hvc_iucv_notifier_add(9)
• hvc_iucv_cleanup(9)
• tty_outqueue_empty(9)
• flush_sndbuf_sync(9)
• hvc_iucv_hangup(9)
• hvc_iucv_notifier_hangup(9)
• hvc_iucv_dtr_rts(9)
• hvc_iucv_notifier_del(9)
• hvc_iucv_path_pending(9)
• hvc_iucv_path_severed(9)
• hvc_iucv_msg_pending(9)
• hvc_iucv_msg_complete(9)
• hvc_iucv_alloc(9)
• hvc_iucv_destroy(9)
• hvc_iucv_parse_filter(9)
• hvc_iucv_setup_filter(9)
• param_set_vmidfilter(9)
• param_get_vmidfilter(9)
• hvc_iucv_init(9)
• hvc_iucv_config(9)

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✨ and that's the whole page, bestie ✨

this masterpiece comes straight out of ./drivers/tty/hvc and it's dated October 2026 — so like, mark your calendar, screenshot it, send it to the group chat, whatever you gotta do. 💖🦋💅