nilfs_ioctl_set_fslabel(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

Okay so bestie, nilfs_ioctl_set_fslabel is literally the function that sets the volume name of the file system. We're in the Kernel API Manual, reading nilfs_ioctl_set_fslabel(9), and it's giving "rename your filesystem, but make it kernel business." ✨

✨ SYNOPSIS ✨

Here's the signature, exactly as it appears — no edits, no cap:

int nilfs_ioctl_set_fslabel (struct super_block *sb , struct file *filp
       , void __user *argp );

🎀 ARGUMENTS 🎀

The cast, in order:

  • sb — super block instance. That's the sb super block instance, main character energy. 💖
  • filp — file object. yep, the filp is here too.
  • argp — pointer to userspace memory that contains the volume name. That's where the volume name lives in userspace. 🫶

🔥 RETURN 🔥

It returns 0 on success, or one of the following negative error codes on failure. Negative = not the vibe, bestie. 😭

  • -EFAULT — Error copying input data.
  • -EINVAL — Label length exceeds record size in superblock.
  • -EIO — I/O error.
  • -EPERM — Operation not permitted (insufficient permissions).
  • -EROFS — Read only file system.

🦋 SEE ALSO 🦋

The kernel file is ./fs/nilfs2/ioctl.c, and here's the whole squad — every single ref, no skipping:

— from ./fs/nilfs2, dated October 2026. byeee, go set that volume name 💖

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