iio_read_channel_label(9)

📦 version 7.3.1, in nixpkgs unstable

💅 iio_read_channel_label — the manual, but make it make sense

okay so bestie, this is the iio_read_channel_label(9) page from the Kernel API Manual, and honestly? it's a little cutie. tiny function, one job, does it well. let's get into it 🎀

✨ NAME ✨

iio_read_channel_label — read the label for a given channel 🏷️

like, the actual human-readable name-y thing attached to a channel. she's a getter, your honor.

✨ SYNOPSIS ✨

ssize_t iio_read_channel_label (struct iio_channel *chan , char *buf );

that's it. that's the whole signature. two args, one return, no cap 🫶

✨ ARGUMENTS ✨

  • chan — the channel being queried. this is your main character — the <struct iio_channel *> you're asking about 💖
  • buf — where to store the attribute value. and listen, because this part is important:
    • it's assumed to hold at least PAGE_SIZE bytes 📏
    • and it's assumed to be aligned at PAGE_SIZE 📐
bestie. assumed. that means nobody's checking for you. if you hand over a tiny buffer or a wonky-aligned one, that's on you, not on the kernel 🙈

✨ DESCRIPTION ✨

Returns the number of bytes written to buf, or an error code. 🌸

that's genuinely the whole description. she writes the label into buf, tells you how many bytes she wrote, and if something went sideways you get an error code instead. simple, iconic, no notes 👑

✨ SEE ALSO ✨

the whole friend group showed up for this one, fr fr. here's the full guest list 💜

ok that's the whole page!! go read your channel labels responsibly, align your buffers, and remember: she assumes you know what you're doing 💀✨

mwah 💋 this cutie lives in ./include/linux/iio, dated October 2026, and answers to iio_read_channel_label(9) — iykyk 🦋

📦 where this page comes from