XDF_CLOSE(3)

💖 XDF_CLOSE(3) — the xdffileio library manual, bestie edition 💖

okay so this is a page from the xdffileio library manual, and today's main character is xdf_close. yes queen, we're closing files. let's get into it 🫶

✨ NAME ✨

xdf_close — close a xDF file. that's it. that's the whole job. and she does it flawlessly 💅

🌸 SYNOPSIS 🌸

#include <xdfio.h>

int xdf_close(struct xdf* xdf);

look at her. one function. one argument. no drama. iconic behavior fr fr ✨

🦋 DESCRIPTION 🦋

so like, xdf_close() closes the xDF file that the handle xdf is pointing at. that's the vibe. that's the whole vibe.

now here's the tea 🍓 — when the file gets closed, if a record is not full, it will be completed by zeros. no cap. she's not leaving you with a half-finished record, she pads it out for you like the generous queen she is 👑

and listen, this part matters: after you call xdf_close(), you should not use xdf anymore. not even if the call fails. like, at all. because all the resources associated with it will be freed anyways. it's giving "we're done here" energy, and she means it. do not text her back, bestie. the relationship is over 💀

⭐ RETURN VALUE ⭐

• she returns 0 in case of succes ✨ (yes, that's how the original spells it, we love a quirky spelling moment)
• otherwise, -1 is returned and errno is set accordingly 🚩

💅 ERRORS 💅

okay so when things go wrong (and they might 😭), here's what errno could be serving you:

• EINVAL — xdf is NULL. bestie. you passed nothing. the audacity 🙈
• EFBIG — an attempt was made to write a file that exceeds the implementation-defined maximum file size or the process's file size limit, or to write at a position past the maximum allowed offset. she's too big for this filesystem, and that's a real problem 😤
• EINTR — the call was interrupted by a signal before any data was written; see signal(7). rude of that signal honestly 🛑
• EIO — a low-level I/O error occurred while modifying the inode. something deep down went wrong, and we don't talk about it 💀
• ENOSPC — the device containing the xDF file has no room for the data. the disk said "no more, I'm full" 🍽️
• ESTALE — stale file handle. this error can occur for NFS and for other file systems. old handle, no thoughts, expired, not it 🥀

lowkey important: even if the call fails, xdf is still gone. resources freed. don't touch it. periodt.

🌈 SEE ALSO 🌈

okay so the original page here doesn't list any SEE ALSO refs — it just goes straight from ERRORS to the footer. so there's nothing to link, bestie. we keep it honest 💜

and that's the whole page, my love! written by the lovely people at EPFL, dated 2010, from the xdffileio library manual — closing files since way before we were even on this app. she's a classic, she's timeless, and she slays 🎀✨💖