unpack_fields_u16(9)

📦 version 7.3.1, in nixpkgs unstable

💅 unpack_fields_u16(9) — Kernel API Manual, but make it make sense

okay bestie, so this page lives in the Kernel API Manual and it's all about unpack_fields_u16 — literally the function that takes a packed buffer and unpacks an array of fields out of it. that's the whole vibe. let's get into it 🎀

✨ SYNOPSIS ✨

void unpack_fields_u16 (const void *pbuf , size_t pbuflen , void
*ustruct , const struct packed_field_u16 *fields , size_t num_fields ,
u8 quirks );

like, look at all those parameters. she's got range. 💅

🫶 ARGUMENTS 🫶

  • pbuf — pointer to the buffer that's holding the packed value. the raw material, the before picture. 📦
  • pbuflen — the length in bytes of the packed buffer that pbuf points at. gotta know how much you're working with, fr fr.
  • ustruct — pointer to the CPU-readable structure that's gonna hold the unpacked value. and yeah, it's expected (but like, not checked bestie, it is NOT checked) that this has the same data type as all the struct packed_field_u16 definitions. so. keep that in mind. 🙈
  • fields — array of packed_field_u16 field definitions. they must not overlap. no cap, no overlapping, that's the rule. 🚫
  • num_fields — the length of the fields array. how many field defs you're carting in.
  • quirks — a bit mask made of QUIRK_LITTLE_ENDIAN, QUIRK_LSW32_IS_FIRST, and QUIRK_MSB_ON_THE_RIGHT. the endianness lore, iykyk. ⭐

🌸 DESCRIPTION 🌸

so here's the tea: use the unpack_fields macro instead of calling this directly. that's it. that's the whole description. she's short and she knows it. 💖

🦋 SEE ALSO 🦋

the kernel file ./lib/packing.c is where the magic lives, and you should also go look at:

go read them. be curious. main character energy. 👑

mwah 💜 that's the page! this icon was brought to you by the ./lib source, October 2026 edition — slay, date her, she's iconic. 🎀✨

📦 where this page comes from