nbd_get_pread_initialize(3)

✨ nbd_get_pread_initialize ✨

okay so real quick, this is a page from the libnbd manual section 3, bestie — buckle up, it's a short one but it's lowkey important 💅

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🌸 NAME 🌸

nbd_get_pread_initialize — the lil function that tells you whether libnbd pre-initializes read buffers 🫶

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🎀 SYNOPSIS 🎀

#include <libnbd.h>

int nbd_get_pread_initialize (
      struct nbd_handle *h
    );

like, that's it. that's the whole vibe. ✨

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🦋 DESCRIPTION 🦋

bestie, this one's basically a vibe check on your handle 👑

It returns whether libnbd performs a pre-initialization of a buffer passed to nbd_pread(3) and similar — setting that whole buffer to all zeroes — as set by nbd_set_pread_initialize(3).

so like, someone already told libnbd what to do over there, and this function is just here to report back on the situation. main character energy from a getter, honestly. 🎀

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⭐ RETURN VALUE ⭐

This call returns a boolean value. that's it, that's the tea ☕ — true or false, no in-between, no drama.

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💀 ERRORS 💀

Not me telling you this function does not fail. fr fr, it cannot fail. iconic behaviour, no notes. 🙈

but there is one tiny little rule, and it's giving "don't test me":

The following parameters must not be NULL: "h". For more information see "Non-NULL parameters" in libnbd(3).

bestie pls don't pass a NULL handle, that's the one thing that'll ruin the whole moment 😭

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🔥 VERSION 🔥

This function first appeared in libnbd 1.12. she's a classic, she's been around 💜

If you need to test if this function is available at compile time check if the following macro is defined:

#define LIBNBD_HAVE_NBD_GET_PREAD_INITIALIZE 1

compile-time check era, we love to see it ⭐

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🌈 SEE ALSO 🌈

the whole friend group, assembled 🫶:

• nbd_aio_pread(3)
• nbd_aio_pread_structured(3)
• nbd_create(3)
• nbd_pread(3)
• nbd_pread_structured(3)
• nbd_set_pread_initialize(3)
• nbd_set_strict_mode(3)
• libnbd(3)

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👑 AUTHORS 👑

absolute legends, no cap:

• Eric Blake
• Richard W.M. Jones

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💖 COPYRIGHT 💖

Copyright Red Hat

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🧚 LICENSE 🧚

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

okay that's the legal bit, and yes it still applies even though I said it cutely 💅 read it properly bestie, "WITHOUT ANY WARRANTY" is doing a LOT of heavy lifting there 😭

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and that's the whole page!! mwah 💋 — this was nbd_get_pread_initialize(3) from libnbd-1.25.8, dated 2026-10-13. go forth and pre-initialize responsibly 🦋✨