FUNCTI...ER_LONG(3stap)

💖 FUNCTI...ER_LONG 💖

okay bestie, so this is a page from the SystemTap Tapset Reference, section 3stap — it's a tapset function page, and it's short but it matters, so let's get into it 🫶

---

✨ NAME ✨

function::user_long — grabs a long value that's chillin' in user space 💅

---

🌸 SYNOPSIS 🌸

user_long:long(addr:long)

like. that's the whole vibe. one arg, one return, no drama ✨

---

🎀 ARGUMENTS 🎀

• addr — the user space address you want the long from. that's it, that's the address, go get 'em 🦋

---

👑 DESCRIPTION 👑

So basically: this function returns the long value from whatever user space address you handed it. simple. iconic. does exactly what it says on the tin 💖

But — and this is the part you cannot skip, bestie — if user space data is not accessible, it returns zero. Not an error, not a crash, just a big fat 0. So don't be out here trusting a zero like it's real data, okay? 😭 vibe check your pointers fr fr.

⚠️ also lowkey important: the size of the long depends on the architecture of the current user space task. that hits different for the architectures that support both 64/32 bit compat tasks — so the same address could give you a different-sized long depending on whose task you're looking at. no cap 🫡

---

💜 SEE ALSO 💜

• tapset::uconversions(3stap) — go read it, it's giving related-energy 🌈

---

and that's the page, bestie!! stay safe out there and always check your return values 💅✨

SystemTap Tapset Reference · September 2026 🎀 (the header was doing the most with all those truncated FUNCTI...ER_LONG bits, we're keeping the vibe though 🦋)