FUNCTION::USER_STRING(3stap)

💖 function::user_string — grabbing strings out of user space, no cap 💖

okay bestie, so this is a page from the SystemTap Tapset Reference, manual section 3stap, and it's all about one little tapset function called user_string. sit down, sip your drink, we're getting a char * out of a process's memory. 🫶

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✨ NAME ✨

function::user_string — retrieves a string from user space 🌸

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✨ SYNOPSIS ✨

1) user_string:string(addr:long)

2) user_string:string(addr:long,err_msg:string)

two whole flavours, pick your fighter 💅

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✨ ARGUMENTS ✨

• addr — the user space address you wanna pull the string out of 🎀
• err_msg — the error message to hand back when the data just isn't available 😭

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✨ DESCRIPTION ✨

1. Returns the null terminated C string from a given user space memory address. Reports an error on the rare cases when userspace data is not accessible. 🔥
2. Returns the null terminated C string from a given user space memory address. Reports the given error message on the rare cases when userspace data is not accessible. 💖

note the vibe: version 2 is the same deal as version 1, except you get to choose what it says when things go sideways. main character energy, honestly. 👑

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✨ SEE ALSO ✨

• tapset::uconversions(3stap)
• tapset::uconversions(3stap)

(yes, it's listed twice in the original, and yes, we are keeping it twice, because the facts do not change just because the vibe does 💀)

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that's the whole page, bestie. this was the SystemTap Tapset Reference, Ver — dated September 2026 — filed under section 3stap. go forth and read that memory, but like, carefully. ✨🦋💜