explain_setsid_or_die(3)

✨ explain_setsid_or_die — the libexplain glow-up 💅

okay bestie, so this is a page from the Library Functions Manual, and it's all about explain_setsid_or_die 🎀. Two little functions, both absolute icons, both here to call setsid(2) for you and to narrate the drama if it goes sideways.

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🌸 NAME 🌸

explain_setsid_or_die — sets process group ID and report errors 💖

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✨ SYNOPSIS ✨

#include <libexplain/setsid.h>
pid_t explain_setsid_or_die(void);
pid_t explain_setsid_on_error(void);

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🦋 DESCRIPTION 🦋

So like, both of these are wrappers around the setsid(2) system call, but they have very different coping mechanisms.

The explain_setsid_or_die function is used to call the setsid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setsid(3) function, and then the process terminates by calling exit(EXIT_FAILURE). yeah. it said what it said. 💀 the "or die" is not a metaphor, it is literally the plot.

The explain_setsid_on_error function is used to call the setsid(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_setsid(3) function, but still returns to the caller. she spills the tea and then just… comes back. no cap. 🫶

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👑 RETURN VALUE 👑

The explain_setsid_or_die function only returns on success, see setsid(2) for more information. On failure, prints an explanation and exits, it does not return. like, she left the group chat, she's not coming back 😭

The explain_setsid_on_error function always returns the value return by the wrapped setsid(2) system call. (yes, "return" — that's exactly how the original says it, and honestly? we respect the typo era 🙈)

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🔥 EXAMPLE 🔥

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

explain_setsid_or_die();

that's it. that's the whole vibe. short, iconic, one line, no notes ✨

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🌈 SEE ALSO 🌈

• setsid(2) — creates a session and sets the process group ID
• explain_setsid(3) — explain setsid(2) errors
• exit(2) — terminate the calling process

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💜 COPYRIGHT 💜

libexplain version 1.4

Copyright (C) 2011 Peter Miller

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okay that's the whole page, bestie 🎀 go forth and setsid responsibly. this was explain_setsid_or_die(3), served fresh from libexplain version 1.4, with the copyright held down by Peter Miller, 2011 💅💖 slay, periodt.