explain_fseeko_or_die(3)

💖 explain_fseeko_or_die — the manual page, but make it make sense 💖

okay bestie, so this is explain_fseeko_or_die(3) — a <hotpink>library functions manual</hotpink> situation, and honestly? she's giving "fseeko but with a safety net and a therapist." let's get into it 🦋

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✨ NAME ✨

explain_fseeko_or_die — seek to or report file position and report errors. yes that's the whole name, she's long, she's descriptive, she ate 💅

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🌸 SYNOPSIS 🌸

#include <libexplain/fseeko.h>
void explain_fseeko_or_die(FILE *fp, off_t offset, int whence);
int explain_fseeko_on_error(FILE *fp, off_t offset, int whence);

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🎀 DESCRIPTION 🎀

okay so there's two functions here and they're sisters, not twins. listen up:

The explain_fseeko_or_die function is used to call the fseeko(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fseeko(3) function, and then the process terminates by calling exit(EXIT_FAILURE). so like. she's dramatic. she does NOT do second chances. failure = the whole program is done, no cap 😭

The explain_fseeko_on_error function is used to call the fseeko(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fseeko(3) function, but still returns to the caller. so she's the chill one, she reports the drama and then hands you back the receipts 🫶

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the parameters (the trio, the main characters) 👑

• fp — The fp, exactly as to be passed to the fseeko(3) system call. like, no edits, no glow-up, pass her through exactly as she is.
• offset — The offset, exactly as to be passed to the fseeko(3) system call. same deal bestie, character-for-character.
• whence — The whence, exactly as to be passed to the fseeko(3) system call. yes, exactly. i'm not even joking, the pattern is the pattern.

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🔥 RETURN VALUE 🔥

The explain_fseeko_or_die function only returns on success — see fseeko(3) for more information. On failure, prints an explanation and exits, it does not return. so if you ever see her come back, that means everything is fine, she's just visiting. otherwise, she's gone. she left. 🕊️

The explain_fseeko_on_error function always returns the value return by the wrapped fseeko(3) system call. (yes, "return" — that's what the original says, we're being faithful here, it's giving typo but it's our typo now 💀)

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🍓 EXAMPLE 🍓

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

explain_fseeko_or_die(fp, offset, whence);

look at her. one line. no error handling. iconic. ⭐

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🌈 SEE ALSO 🌈

• fseeko(3) — seek to or report file position
• explain_fseeko(3) — explain fseeko(3) errors
• exit(2) — terminate the calling process

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👑 COPYRIGHT 👑

libexplain version 1.4 Copyright (C) 2013 Peter Miller

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and that's the whole thing bestie, iykyk 🧚

kisses, this was explain_fseeko_or_die(3) from the Library Functions Manual — libexplain version 1.4, copyright 2013 Peter Miller, and the footer date says so too. go forth and fseeko responsibly, mwah 💖✨🎀