LLAPI_PROJECT_OPEN(3)

📦 version 2.17.58, in ubuntu stonking

💖 LLAPI_PROJECT_OPEN 💖

okay bestie, welcome to section 3 of the Lustre Library Functions manual, and today's main character is llapi_project_open 🫶 she's the one who throws open the door to your project mapping file. let's get into it, no cap ✨

🌸 NAME 🌸

llapi_project_open — open project mapping file 👑

✨ SYNOPSIS ✨

#include <lustre/lustreapi.h>

int llapi_project_open(const char *name, struct ll_project_handle *hdl,
                       char *mode);

like, three args, one header, zero drama 💅

🦋 DESCRIPTION 🦋

so the way that llapi_project_open() works is it opens the file that name points at. simple, iconic, we love her 🌈

but here's the tea ☕ — if name is NULL, she doesn't just give up and cry. instead she uses the path that's sitting in LIBLUSTREAPI_PROJECT, if that's available, and if it's not, she lowkey defaults back to /etc/projid instead. resilient queen 👑💖

🎀 RETURN VALUES 🎀

  • 0 — slay, success, she ate 💅✨
  • -ve — it's giving error code on failure, and she sets errno appropriately so you can go find out what went wrong 😭

💀 ERRORS 💀

ngl these are the possible L's:

  • -EINVAL — thrown when name is not NULL, but begins with ' '. yeah, she said no leading spaces today 🙈
  • -ENOMEM — thrown if she fails to allocate enough space for the new ll_project_handle. not enough room, not enough vibes, literally 😭

⭐ AVAILABILITY ⭐

llapi_project_open() is part of the lustre(7) user application interface library since release 2.17.0 🎉 mark your calendars, bestie, she's been here a minute (well, since 2.17.0, but still) 🗓️💖

🫶 SEE ALSO 🫶

the whole friend group, fr fr:

and that's the whole page, periodt 💖✨

brought to you by the Lustre User API, dated 2025-07-01 — go off, and remember: NULL is not the end of the world, it's just a fallback to /etc/projid 🦋💜

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