LLAPI_CHANGELOG_GET_FD(3)

✨ LLAPI_CHANGELOG_GET_FD ✨

okay so bestie, this is a page from the User manual, section 3 — aka the library functions zone 💅 it's called llapi_changelog_get_fd, and literally all it does is hand you a file descriptor. tiny function, big main character energy 👑

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🌸 NAME 🌸

llapi_changelog_get_fd — return the file descriptor of the changelog device 🎀

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🦋 SYNOPSIS 🦋

#include <lustre/lustreapi.h>

int llapi_changelog_get_fd(void *priv);

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💖 DESCRIPTION 💖

so the function llapi_changelog_get_fd() returns the file descriptor of the changelog char device for the instance priv. that's it. that's the whole vibe 🌈

and the way that's actually useful?? you can pass that file descriptor into poll() to get events on the changelog device. yes bestie, real event-driven behavior, we love to see it ✨

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💫 RETURN VALUES 💫

• on success → it returns the file descriptor 🫶
• on failure → it returns a negative errno value 😭

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👑 ERRORS 👑

• -EINVAL — your priv argument is invalid, no cap 💀

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🧚 AVAILABILITY 🧚

llapi_changelog_get_fd is part of the lustre(7) user application interface library, and it's been there since release 2.4.0 ⭐ iconic, honestly.

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🍓 SEE ALSO 🍓

• poll(2)
• llapi_changelog_clear(3)
• llapi_changelog_in_buf(3)
• llapi_changelog_recv(3)
• llapi_changelog_start(3)
• llapi_changelog_start_user(3)
• lustreapi(7)

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bestie if priv ain't valid you're getting -EINVAL and that's just the rules 🙈 always check your args, fr fr 💜

Lustre 🌸 2024-08-22 🌸 that's the source, the version, and the date from the footer — mwah, go slay your changelog events 💅✨