file_close_fd(9)

This one’s from the Kernel API Manual, and it’s giving “tiny function, very specific job” energy. No cap. 💖

✨ NAME ✨

file_close_fd — return file associated with fd 🌈

🦋 SYNOPSIS 🦋

struct file * file_close_fd (unsigned int fd );

🌸 ARGUMENTS 🌸

• fd — file descriptor to retrieve file for. That’s the whole vibe: you hand over an fd, and it’s the fd we’re retrieving the file for. 🎀

💅 DESCRIPTION 💅

It doesn’t take a separate reference count. That’s the note, bestie — short and iconic, no extra lore on this page. 💀

🎀 RETURN 🎀

You get back the file associated with fd — and yep, it’s NULL if fd is not open. 🫶

🔥 SEE ALSO 🔥

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

Go off, kernel crew. 🌟

This page is file_close_fd(9) from ./fs, dated October 2026 — slay, signed off, periodt. 💅✨