qlibs:(alloc)

🌸 qlibs:(alloc) 🌸

hey bestie, welcome to the qlibs:(alloc) manual — this is the page for alloc, and we're gonna get you comfy with it 💖

✨ NAME ✨

• alloc — allocate memory 🧠✨

🎀 SYNTAX 🎀

okay so here's the exact shape of it, no cap:

#include "alloc.h"

char *alloc(new);

void alloc_free(x);

void alloc_re(&x,old,new);

char *x;
unsigned int old;
unsigned int new;

💫 DESCRIPTION 💫

alloc allocates enough space from the heap for new bytes of data, and it's adequately aligned for any data type. new may be 0. alloc returns a pointer to that space. If space is not available, alloc returns 0 and sets errno appropriately. slay. ✨

alloc_free returns space to the heap. bye space 👋

alloc_re expands the space allocated to x from old bytes to new bytes. It allocates new space, copies old bytes from the old space to the new space, returns the old space to the heap, and changes x to point to the new space. Then it returns 1. If space is not available, alloc_re returns 0, leaving the old space alone. periodt. 💅

🛡️ CVE-2005-1513 🛡️

bestie, important: this version of alloc respects limits.h to avoid memory resource exhaustion. that's the whole note, but it matters 💜

🔗 SEE ALSO 🔗

• sbrk(2)
• malloc(3)
• error(3)

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byeee 🫶 — source/version qlibs:(alloc), page 3 (that's the footer, no date in the original, bestie) 🌈✨