explain_execv_or_die(3)

💅 explain_execv_or_die — Library Functions Manual 🎀

okay bestie, sit down, we're doing a libexplain page and honestly? it's giving helpful. no cap. 💖

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✨ NAME ✨

explain_execv_or_die — execute a file and report errors 🦋

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🌸 SYNOPSIS 🌸

#include <libexplain/execv.h>
void explain_execv_or_die(const char *pathname, char *const*argv);
int explain_execv_on_error(const char *pathname, char *const*argv);

like, two whole functions, both iconic, both here to serve 👑

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💜 DESCRIPTION 💜

so. explain_execv_or_die is the function you call when you want to call the execv(3) system call. and if it goes wrong? an explanation gets printed to stderr — that explanation comes from the explain_execv(3) function — and then the process terminates by calling exit(EXIT_FAILURE). so, yeah. it dies. that's literally in the name, iykyk 💀

explain_execv_on_error is the chill sibling 🫶. it also calls the execv(3) system call, and on failure it also prints an explanation to stderr obtained from explain_execv(3), but instead of dramatically ending it all, it still returns to the caller. main character energy but emotionally stable 💅

🎀 the arguments

• pathname — the pathname, exactly as to be passed to the execv(3) system call. like, exactly exactly. don't get creative ✨
• argv — the argv, exactly as to be passed to the execv(3) system call. same energy, same rule. no editing, bestie 🙈

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🔥 RETURN VALUE 🔥

explain_execv_or_die only returns on success — see execv(3) for more info on that. on failure it prints an explanation and exits. it does not return. periodt. 💀

explain_execv_on_error always returns the value returned by the wrapped execv(3) system call. always. every time. it's reliable like that 😌

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🌈 EXAMPLE 🌈

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

explain_execv_or_die(pathname, argv);

that's it. that's the whole vibe. chef's kiss 👑✨

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🦋 SEE ALSO 🦋

• execv(3) — execute a file
• explain_execv(3) — explain execv(3) errors
• exit(2) — terminate the calling process

go read them, they're all besties fr fr 💖

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🌸 COPYRIGHT 🌸

libexplain version 1.4

Copyright (C) 2012 Peter Miller

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and that's a wrap, bestie 🎀 this was explain_execv_or_die(3) from the Library Functions Manual, brought to you by libexplain version 1.4, with all the copyright love going to Peter Miller, 2012. mwah 💋 slay, stay safe, and always check your return values ✨💅🫶