EXPLAIN_SETBUFFER_OR_DIE(3)

💖 explain_setbuffer_or_die(3) 💖

okay so bestie, welcome to the Library Functions Manual section of the libexplain universe — this is where we handle stream buffering ops AND make sure nobody suffers in silence when it goes wrong. 🎀

---

✨ NAME ✨

explain_setbuffer_or_die — stream buffering operations and report errors 🦋

---

🌸 SYNOPSIS 🌸

#include <libexplain/setbuffer.h>
void explain_setbuffer_or_die(FILE *fp, char *data, size_t size);
void explain_setbuffer_on_error(FILE *fp, char *data, size_t size);

---

💅 DESCRIPTION 💅

So here's the tea. The explain_setbuffer_or_die function is used to call the setbuffer(3) system call. If that call fails, an explanation gets printed to stderr — and that explanation comes straight from the explain_setbuffer(3) function — and then the process terminates by calling exit(EXIT_FAILURE). Like, it's over, no coming back from that one. 💀

The explain_setbuffer_on_error function is also used to call the setbuffer(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setbuffer(3) function, but it still returns to the caller. So it's the chill sibling — it tells you what went wrong and then hands control right back. 🫶

Here's the arg rundown, no notes:

• fp — the fp, exactly as to be passed to the setbuffer(3) system call. literally the same one, don't get creative.
• data — the data, exactly as to be passed to the setbuffer(3) system call. again: exact same, no remixing. ✨
• size — the size, exactly as to be passed to the setbuffer(3) system call. yes bestie, all three go through untouched. 💖

---

👑 RETURN VALUE 👑

The explain_setbuffer_or_die function only returns on success — see setbuffer(3) for more information. On failure, it prints an explanation and exits, so it does not return. periodt, it's gone. 😭

The explain_setbuffer_on_error function always returns the value return by the wrapped setbuffer(3) system call. (Yes, "return by" — that's the wording, we keep the wording. 🌈)

---

⭐ EXAMPLE ⭐

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

void result = explain_setbuffer_or_die(fp, data, size);

look at her go, main character energy fr fr 💅

---

🔥 SEE ALSO 🔥

• setbuffer(3) — stream buffering operations
• explain_setbuffer(3) — explain setbuffer(3) errors
• exit(2) — terminate the calling process

---

🎀 COPYRIGHT 🎀

libexplain version 1.4 Copyright (C) 2010 Peter Miller

---

and that's the whole page bestie — go forth, buffer your streams, and let libexplain narrate the chaos when it doesn't work out. iykyk 🧚💜

mwah, this was explain_setbuffer_or_die(3) from the Library Functions Manual, signed off with libexplain version 1.4, copyright Copyright (C) 2010 Peter Miller — slay, bye! 🦋🌸✨