explain_accept4_or_die(3)

💖 explain_accept4_or_die — Library Functions Manual ✨

okay bestie, sit down, grab a boba, because we're talking about explain_accept4_or_die from libexplain and honestly? it's giving helpful. 💅

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🌸 NAME 🌸

explain_accept4_or_die — accept a connection on a socket and report errors 🦋

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✨ SYNOPSIS ✨

#include <libexplain/accept4.h>
int explain_accept4_or_die(int fildes, struct sockaddr *sock_addr,
socklen_t *sock_addr_size, int flags);
int explain_accept4_on_error(int fildes, struct sockaddr *sock_addr,
socklen_t *sock_addr_size, int flags);

like, two whole functions, two whole vibes, same signature, no cap. 🫶

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💜 DESCRIPTION 💜

so. the explain_accept4_or_die function is the one you call when you want to call the accept4(2) system call. and if it fails? it prints an explanation to stderr, which it gets from the explain_accept4(3) function, and then — and this is the dramatic part — the process terminates by calling exit(EXIT_FAILURE). it does not come back. it does not text you back. it's gone. 💀

the explain_accept4_on_error function also calls the accept4(2) system call, and on failure it also prints an explanation to stderr (again, sourced from explain_accept4(3)) — but this one is the chill one, because it still returns to the caller. main character energy but make it polite. 😌

🎀 the parameters, one by one 🎀

• fildes — the fildes, exactly as to be passed to the accept4(2) system call. no notes, no edits, pass it as-is.
• sock_addr — the sock_addr, exactly as to be passed to the accept4(2) system call. same energy.
• sock_addr_size — the sock_addr_size, exactly as to be passed to the accept4(2) system call. yes bestie, verbatim.
• flags — the flags, exactly as to be passed to the accept4(2) system call. iconic behavior, honestly.

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🔥 RETURN VALUE 🔥

the explain_accept4_or_die function only returns on success — see accept4(2) for more information. on failure, it prints an explanation and exits, so like… it does not return. it's not ghosting you, it literally cannot return. 😭

the explain_accept4_on_error function always returns the value returned by the wrapped accept4(2) system call. always. every time. reliable queen. 👑

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🌈 EXAMPLE 🌈

the explain_accept4_or_die function is intended to be used in a fashion similar to the following example:

int result = explain_accept4_or_die(fildes, sock_addr, sock_addr_size, flags);

see how clean that is?? one line. ate. 💅✨

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🦋 SEE ALSO 🦋

• accept4(2) — accept a connection on a socket
• explain_accept4(3) — explain accept4(2) errors
• exit(2) — terminate the calling process

iykyk, go read all three, they're besties. 💖

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👑 COPYRIGHT 👑

libexplain version 1.4 Copyright (C) 2009 Peter Miller

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and that's the whole page bestie!! 🎀 this was explain_accept4_or_die(3), living in the Library Functions Manual, brought to you by libexplain version 1.4 and the one and only Peter Miller, Copyright (C) 2009 — say thank you, mwah, bye!! 🫶💖🌸