range_validbuf(3)

💖 range_validbuf(3) 💖

okay bestie, welcome to the Library Functions Manual, section 3, where we check whether your buffer is even real or just delulu ✨

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🌸 NAME 🌸

range_validbuf — range check buffer 🫶

like, it vibe-checks a buffer. that's the whole job. she's simple, she's iconic, she's employed.

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🎀 SYNTAX 🎀

#include <libowfat/rangecheck.h>

int range_validbuf(const void* buf,size_t len);

yes girl, include the header, call the function, live your truth 💅

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🦋 DESCRIPTION 🦋

range_validbuf does some basic plausibility checks on the buffer buf[0..len-1].

that's it. that's the function. she's not doing a full audit, she's not reading your code's diary, she's just asking "does this buffer pass the vibe check" and honestly? we love a low-effort queen 👑

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⭐ RETURN VALUE ⭐

• If the buffer is implausible — meaning buf is NULL or buf+len has an integer overflow — it returns 0. 💀
• Otherwise, it returns 1. ✨

so like, 0 = "not me getting a NULL pointer bestie 😭", 1 = "she's valid, periodt 🌈"

ngl the overflow check is the main character here — if buf+len wraps around, that math is lying to you and range_validbuf is NOT falling for it 🙈

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👑 SEE ALSO 👑

• rangecheck(3)

go read her sister, she's also serving 💜

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that's the whole page bestie!! 🌸 written under the Library Functions Manual banner (section 3, where all the good library functions live), and the footer? it just says range_validbuf(3) with no date on it, so no birthday party for this one 🎂✨ anyway ily, go check your buffers, stay safe, mwah 💅💖