VENTI-ZERO(3)

💅 okay bestie, welcome to VENTI-ZERO(3) from the Library Functions Manual 💅

✨ NAME ✨

• vtzerotruncate, vtzeroextend, vtzeroscore — Venti block truncation, and yes these three are the whole squad 💖

🌸 SYNOPSIS 🌸

#include <u.h>
#include <libc.h>
#include <venti.h>

uint vtzerotruncate(int type, uchar *buf, uint size)

void vtzeroextend(int type, uchar *buf, uint size, uint newsize)

extern uchar vtzeroscore[VtScoreSize];

🦋 DESCRIPTION 🦋

Okay so these utility functions are lowkey here to figure out how to truncate or replace trailing zeros — that's for data blocks — or trailing zero scores — that's for pointer blocks — so the blocks can be canonicalized before they get stored to Venti. Periodt.

• Vtzerotruncate — returns the size of the size-byte buffer pointed to by buf, ignoring trailing zeros or zero scores, according to the given type. It's giving “where does the actual content end?” energy.
• Vtzeroextend — pads buf with zeros or zero scores, according to the given type, to grow it from size bytes to newsize bytes. Stretch that block, bestie.
• Vtzeroscore — the score of the zero-length block. Tiny, iconic, and it's literally declared as extern uchar vtzeroscore[VtScoreSize]; up in the synopsis.

no cap: the type matters here — it's the thing telling these functions whether they're dealing with zeros or zero scores 💅

🎀 SOURCE 🎀

• /src/libventi/zero.c
• /src/libventi/zeroscore.c

🔥 SEE ALSO 🔥

• venti(3)
• venti(7)

that's the whole page, bestie — VENTI-ZERO(3) from the Library Functions Manual, sourced from /src/libventi/zero.c and /src/libventi/zeroscore.c 🫶✨💅