hex2bin(9)

📦 version 7.3.1, in nixpkgs unstable

💖 hex2bin(9) — your Kernel API Manual bestie 💖

okay so bestie, we're in the Kernel API Manual and this entry is hex2bin(9). it's giving "turn the ascii hex into actual binary bytes" and honestly? slay. ✨

🌸 NAME 🌸

hex2bin — convert an ascii hexadecimal string to its binary representation. no cap, that's the whole glow-up. 💅

🦋 SYNOPSIS 🦋

int hex2bin (u8 *dst , const char *src , size_t count );

🎀 ARGUMENTS 🎀

  • dst — the binary result goes here, bestie. this is the output spot. 💖
  • src — the ascii hexadecimal string you're feeding in. 🌸
  • count — the result length. yes ma'am, it's how long the result is. ⭐

🔥 DESCRIPTION 🔥

vibe check time: it returns 0 on success, and -EINVAL in case of bad input. that's it, that's the tea. 🫖 no extra lore, no hidden plot. 😭

🧚 SEE ALSO 🧚

the related crew is the kernel file ./lib/hexdump.c, plus these besties:

that's the whole page, bestie 💜 signed off from ./lib in October 2026 — and yeah, it's still hex2bin(9), periodt. 🎀

📦 where this page comes from