EXPLAIN_FTRUNCATE_OR_DIE(3)

💖 explain_ftruncate_or_die(3) 💖

ok so bestie, welcome to the Library Functions Manual section, and lemme tell you about explain_ftruncate_or_die — she's a whole vibe and she will absolutely end your program if things go sideways. no cap. 🫶

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✨ NAME ✨

explain_ftruncate_or_die — truncate a file and report errors

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🌸 SYNOPSIS 🌸

#include <libexplain/ftruncate.h>
void explain_ftruncate_or_die(int fildes, long long length);

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🦋 DESCRIPTION 🦋

ok so here's the tea. The explain_ftruncate_or_die function is literally just here to call the ftruncate(2) system call for you. That's it. That's the job. 💅

But here's the main character twist: if it fails, an explanation gets printed to stderr — and that explanation comes straight from explain_ftruncate(3) — and then the process terminates by calling exit(EXIT_FAILURE). Like, gone. done. not coming back. 😭

This function is intended to be used in a fashion similar to the following example:

explain_ftruncate_or_die(fildes, length);

• fildes — the fildes, exactly as to be passed to the ftruncate(2) system call. like, don't get creative with it, just pass it through bestie ✨
• length — the length, exactly as to be passed to the ftruncate(2) system call. same energy, same rule 🎀

Returns:

This function only returns on success. On failure, it prints an explanation and exits. so if you ever see it come back to you, congrats, it worked. otherwise... it's giving goodbye forever. 👑

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🌈 SEE ALSO 🌈

• ftruncate(2) — truncate a file to a specified length
• explain_ftruncate(3) — explain ftruncate(2) errors
• exit(2) — terminate the calling process

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🎀 COPYRIGHT 🎀

libexplain version 1.4 Copyright (C) 2008 Peter Miller

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lowkey iconic that this whole thing is libexplain version 1.4, copyrighted in 2008 by Peter Miller — an absolute legend, we love her, periodt. 💜

ok bye bestie, go truncate something responsibly 💖✨🌸🦋