scsw_tm_is_valid_fcxs(9)

📦 version 7.3.1, in nixpkgs unstable

✨ scsw_tm_is_valid_fcxs(9) ✨

okay so bestie, welcome to the Kernel API Manual — this little cutie is scsw_tm_is_valid_fcxs(9) and it's lowkey one of the most straightforward functions you'll ever meet. no cap. it does exactly one thing and it does it slayfully 💅

💖 NAME 💖

scsw_tm_is_valid_fcxs — check fcxs field validity 🎀

like, it's literally a vibe check for one single field. that's it. that's the whole job.

✨ SYNOPSIS ✨

int scsw_tm_is_valid_fcxs (union scsw *scsw );

one function, one argument, returns an int. iconic minimalism honestly 🦋

🌸 ARGUMENTS 🌸

  • scsw — pointer to scsw 🫶 that's your union scsw *, bestie. hand it over and let the function do its thing.

💜 DESCRIPTION 💜

so here's the tea ☕ — this function looks at the fcxs field of the transport mode scsw you passed in, and:

  • returns non-zero if that fcxs field is valid ✅
  • returns zero otherwise ❌

that's the whole entire plot. no side quests, no surprises, no hidden lore. it's giving "small function, big main character energy" 👑 and honestly? we respect it.

ngl the wording matters here: non-zero means valid, zero means not valid. don't flip it, bestie, or your validity checks will be a whole mess 😭

🦋 SEE ALSO 🦋

okay this is the part where the friend group gets HUGE — literally the whole scsw extended universe shows up. every single one of these, no skipping 🙈

like I said. the whole group chat 🌈

and that's the page, bestie!! 🎀 this lil guy lives in ./arch/s390/include/asm and the version tag on it is October 2026 — so jot that down, drink some water, and go validate those fcxs fields with confidence 💖✨🫶

📦 where this page comes from