dvb_ca_en50221_read_tuple(9)

📦 version 7.3.1, in nixpkgs unstable

💫 dvb_ca_en50221_read_tuple 💫

okay bestie, so this one is a kernel API manual page (from the 9 section, iykyk — that's the kernel API section fr fr) and it's all about dvb_ca_en50221_read_tuple, which — say it with me — reads a tuple from attribute memory. that's the whole vibe. 🎀

✨ NAME ✨

dvb_ca_en50221_read_tuple — read a tuple from attribute memory. literally that's it, that's the function, and she ate. 💅

🌸 SYNOPSIS 🌸

int dvb_ca_en50221_read_tuple (struct dvb_ca_private *ca , int slot ,
       int *address , int *tuple_type , int *tuple_length , u8 *tuple );

six arguments, one int return, zero chill. 🦋

🫶 ARGUMENTS 🫶

  • ca — your CA instance. the main character of this little operation. 👑
  • slot — the slot id. which slot we're talking to, bestie. 🌈
  • address — the address you're reading from. heads up: this one gets updated — she comes back changed. 🙈
  • tuple_type — the tuple id byte. also updated. ⭐
  • tuple_length — the tuple length. updated too. three updates, we love a glow-up. ✨
  • tuple — the destination buffer for the tuple. and listen, this is important: it must be 256 bytes. no negotiating, no "it'll probably fit", 256 bytes, periodt. 💀 Updated as well.

🔥 RETURN 🔥

0 on success, nonzero on error. that's the whole report card — 0 is the slay, anything else is the 😭.

🧚 SEE ALSO 🧚

like, the whole friend group shows up for this one. the kernel file ./drivers/media/dvb-core/dvb_ca_en50221.c is the home base, and then:

ngl bestie, that tuple buffer being 256 bytes is the one thing i'd tattoo on my arm. do not skimp on the buffer. 🍓

and that's the page!! it lives in ./drivers/media/dvb-core (the kernel file source, October 2026, that's the version + date energy 🌸) — mwah, go read a tuple, ily, bye!! 💖✨🎀🦋💅

📦 where this page comes from