file_close_fd_locked(9)

okay bestie, welcome to the file_close_fd_locked(9) page from the Kernel API Manual ✨ — it’s literally about grabbing the file tied to an fd, and it’s short and iconic 🎀

🌸 NAME 🌸

file_close_fd_locked — return file associated with fd 💅

✨ SYNOPSIS ✨

struct file * file_close_fd_locked (struct files_struct *files ,
unsigned fd );

🫶 ARGUMENTS 🫶

• files — the file struct you’re retrieving the file from.
• fd — the file descriptor you’re retrieving the file for.

💖 DESCRIPTION 💖

It does not take a separate reference count. That’s the whole note, bestie — no extra ref, periodt. 💅

🔒 CONTEXT 🔒

files_lock must be held. That’s the lock vibe check, no cap. 🔒

🎀 RETURN 🎀

You get back the file associated with fd — and if fd is not open, the answer is NULL. 💖

👑 SEE ALSO 👑

• Kernel file ./fs/file.c
• __file_ref_put(9)
• fd_install(9)
• last_fd(9)
• sys_close_range(9)
• file_close_fd(9)
• get_file_rcu(9)
• get_file_active(9)
• receive_fd(9)

💖 source/version: ./fs • date: October 2026 • page: file_close_fd_locked(9) — slay, bye bestie 🫶✨