explain_write_or_die(3)

💖 explain_write_or_die(3) 💖

okay bestie, so this is a page from the Library Functions Manual, and it's all about explain_write_or_die — the function that writes to a file descriptor and then yells at you if it doesn't work out. no cap. 💅

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✨ NAME ✨

explain_write_or_die — write to a file descriptor and report errors 🦋

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🌸 SYNOPSIS 🌸

#include <libexplain/write.h>
void explain_write_or_die(int fildes, const void *data, long data_size);

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👑 DESCRIPTION 👑

so the explain_write_or_die function is literally just here to call the write(2) system call for you. that's it, that's the job. 🫶

but here's the tea: if it fails, an explanation gets printed to stderr — and that explanation comes from explain_write(3) — and then the process just terminates by calling exit(EXIT_FAILURE). dramatic? maybe. effective? absolutely. 💀

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

ssize_t result = explain_write_or_die(fildes, data, data_size);

now let's talk about the arguments, because we keep every detail around here, periodt:

• fildes — the fildes, exactly as to be passed to the write(2) system call. like, no notes, no edits, hand it over the same way. ✨
• data — the data, exactly as to be passed to the write(2) system call. same energy, same exactness. 🎀
• data_size — the data_size, exactly as to be passed to the write(2) system call. yep, you guessed it, also exactly as-is. 💖

Returns:

this function only returns on success. on failure, it prints an explanation and exits. that's the whole deal, bestie. 😭

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🌈 SEE ALSO 🌈

• write(2) — write to a file descriptor
• explain_write(3) — explain write(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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and that's the whole page, my love — explain_write_or_die(3), courtesy of libexplain version 1.4, with Copyright (C) 2008 Peter Miller holding it down. go forth and write to your file descriptors responsibly. mwah. 🧚💅✨