generic_llseek_cookie(9)

💅 generic_llseek_cookie(9) — Kernel API Manual 💅

okay so bestie, this is the <pink>generic_llseek_cookie(9)</pink> page from the Kernel API Manual, and it’s giving “versioned llseek implementation” energy. no cap, all the facts are staying exactly where they belong — I just put them in a cuter outfit. 🎀✨

---

✨ NAME ✨

generic_llseek_cookie — versioned llseek implementation

---

🎀 SYNOPSIS 🎀

copy this exactly, bestie — commas and all, do not ghost a single character:

loff_t generic_llseek_cookie (struct file *file , loff_t offset , int whence , u64 *cookie );

---

🌸 ARGUMENTS 🌸

• file — the file structure to seek on. yes, that file. 👀
• offset — the file offset to seek to.
• whence — the type of seek. it’s giving “which direction are we going” energy.
• cookie — the cookie to update. 🍪

---

🦋 DESCRIPTION 🦋

okay so for the general description and all the locking assumptions, you’re gonna want to go see generic_file_llseek — that’s the reference, bestie. 💖

the little glow-up here is that, in contrast to generic_file_llseek, this function also resets a specified cookie to indicate that a seek took place. literally the cookie gets updated so everyone knows a seek happened. periodt. ✨🍪

---

💖 SEE ALSO 💖

• Kernel file ./fs/read_write.c
• vfs_setpos_cookie(9)
• vfs_setpos(9)
• must_set_pos(9)
• generic_file_llseek_size(9)
• generic_file_llseek(9)
• fixed_size_llseek(9)
• no_seek_end_llseek(9)
• no_seek_end_llseek_size(9)
• noop_llseek(9)

---

source/version: ./fs • date: October 2026 • page: generic_llseek_cookie(9) — byeee, mwah 💋🫶🌸