vfs_parse_fs_param_source(9)

💅 vfs_parse_fs_param_source(9) ✨

okay so bestie, listen — this is a page straight out of the Kernel API Manual, section 9, and it's lowkey one of those tiny helper functions that just does its one job and does it iconically. No cap.

🌸 NAME 🌸

vfs_parse_fs_param_source — handles setting "source" via a parameter 🎀

✨ SYNOPSIS ✨

int vfs_parse_fs_param_source (struct fs_context *fc , struct
fs_parameter *param );

🦋 ARGUMENTS 🦋

• fc — the filesystem context that's getting modified, main character energy fr
• param — the parameter itself, the whole point of the operation 💫

💖 DESCRIPTION 💖

So here's the vibe: this is a simple helper for filesystems — like, genuinely simple, it's not trying to be anything it isn't — and what it does is verify that the "source" they accept is sane. That's it. That's the whole job. A little vibe check for your source string. 🧚

It returns 0 on success. Slay.

It returns -ENOPARAM if this is not the "source" parameter — so like, not my department, try again bestie. 🙈

And it returns -EINVAL otherwise. 💀

⚠️ real talk: in the event of a failure, supplementary error information gets logged. So if something goes sideways, the kernel will be leaving receipts.

👑 SEE ALSO 👑

the whole friend group, honestly 🫶 — all of these live in the kernel file ./fs/fs_context.c:

• vfs_parse_fs_param(9)
• vfs_parse_fs_qstr(9)
• vfs_parse_monolithic_sep(9)
• generic_parse_monolithic(9)
• alloc_fs_context(9)
• fs_context_for_submount(9)
• vfs_dup_fs_context(9)
• logfc(9)
• put_fs_context(9)

---

and that's the whole page, bestie 💅✨

this masterpiece came to you from ./fs, dated October 2026 — yes, the vfs_parse_fs_param_source(9) page itself, serving looks in the Kernel API Manual 🌈⭐