dvb_ca_en50221_io_do_ioctl(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dvb_ca_en50221_io_do_ioctl — like, the actual ioctl girlie ✨

okay so bestie, welcome to the Kernel API Manual entry for dvb_ca_en50221_io_do_ioctl(9) — this is the function that does the real ioctl work, no cap. it's giving "I'm the one who actually handles it" energy. 🎀

✨ SYNOPSIS ✨

int dvb_ca_en50221_io_do_ioctl (struct file *file , unsigned int cmd ,
       void *parg );

literally the whole signature, character for character, because we do not play about prototypes around here 💅

🌸 ARGUMENTS 🌸

  • file — bestie, this is the File concerned. the file in question. the main character file. 👑
  • cmd — the IOCTL command itself. the vibe check that tells it what to do. ⭐
  • parg — the Associated argument. the little plus-one that comes along with the command. 🫶

🦋 NOTE 🦋

lowkey important okay — the CA_SEND_MSG/CA_GET_MSG ioctls have userspace buffers passed to them. 🙈 like, actual userspace buffers, handed right on over. that's the whole note. iykyk.

🔥 RETURN 🔥

  • 0 on success 🎉
  • <0 on error 😭

fr fr that's it. zero means slay, negative means it's giving struggle.

🌈 SEE ALSO 🌈

the whole friend group, in order, no one left out:

periodt. that's the entire reference list, don't come for me about skipping anyone 💀

okay and finally, the cute little sign-off: this page lives over in ./drivers/media/dvb-core, dated October 2026, and it's page dvb_ca_en50221_io_do_ioctl(9) of your fave Kernel API Manual. mwah, go read some kernel source bestie 💖🧚‍♀️🌸

📦 where this page comes from