dvb_ca_en50221_io_ioctl(9)

💅 NAME ✨

dvb_ca_en50221_io_ioctl — literally just a wrapper for the ioctl implementation, bestie. That's it. That's the whole vibe. It's the little middleman that hands your ioctl off to the real one 🎀

This one lives in the Kernel API Manual, so you already know it's giving kernel-level main character energy 👑

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🦋 SYNOPSIS 🌸

long dvb_ca_en50221_io_ioctl (struct file *file , unsigned int cmd ,
       unsigned long arg );

okay so it takes three things and returns a long, no cap:

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🎀 ARGUMENTS 💖

• file — the file concerned. like, the file in question, that's the whole thing 🫶
• cmd — the IOCTL command. the actual instruction you're sending ✨
• arg — the associated argument. the lil buddy that rides along with cmd 💜

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⭐ RETURN 🔥

• 0 on success 🎉
• <0 on error 😭 (yes, strictly less than zero, read the sign, bestie)

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🌈 SEE ALSO 👑

okay this list is long and honestly iconic, so buckle up — the kernel file ./drivers/media/dvb-core/dvb_ca_en50221.c plus findstr(9), and then this whole squad:

• dvb_ca_en50221_wait_if_status(9)
• dvb_ca_en50221_link_init(9)
• dvb_ca_en50221_read_tuple(9)
• dvb_ca_en50221_parse_attributes(9)
• dvb_ca_en50221_set_configoption(9)
• dvb_ca_en50221_read_data(9)
• dvb_ca_en50221_write_data(9)
• dvb_ca_en50221_slot_shutdown(9)
• dvb_ca_en50221_camchange_irq(9)
• dvb_ca_en50221_camready_irq(9)
• dvb_ca_en50221_frda_irq(9)
• dvb_ca_en50221_thread_wakeup(9)
• dvb_ca_en50221_thread_update_delay(9)
• dvb_ca_en50221_poll_cam_gone(9)
• dvb_ca_en50221_thread_state_machine(9)
• dvb_ca_en50221_io_do_ioctl(9)
• dvb_ca_en50221_io_write(9)
• dvb_ca_en50221_io_read(9)
• dvb_ca_en50221_io_open(9)
• dvb_ca_en50221_io_release(9)
• dvb_ca_en50221_io_poll(9)
• dvb_ca_en50221_init(9)
• dvb_ca_en50221_release(9)

every single one, we don't skip a single name in this house 💅✨

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and that's the teardown, bestie 🧚 this lil page came straight out of ./drivers/media/dvb-core and it's dated October 2026 — so yeah, future-dated kernel lore, we love to see it. mwah 💋🌸