anon_inode_getfd(9)

💅 anon_inode_getfd — Kernel API Manual

okay so bestie, welcome to anon_inode_getfd(9), like the kernel API manual page, and honestly? it's giving "small function, big slay." stay with me, we're gonna get through this together 🫶

---

✨ NAME ✨

anon_inode_getfd — creates a new file instance by hooking it up to an anonymous inode and a dentry that describe the "class" of the file 💫

like yes, that is the whole name section, it's literally one sentence, we love a concise icon 👑

---

🌸 SYNOPSIS 🌸

int anon_inode_getfd (const char *name , const struct file_operations *fops , void *priv , int flags );

that's the whole signature, copy it exactly, no cap, don't be out here improvising 🎀

---

🦋 ARGUMENTS 🦋

four args, four little besties, let's do a vibe check on each one:

• name [in] — the name of the "class" of the new file. it's like the file's little aesthetic label, its whole identity ngl 🌈
• fops [in] — the file operations for the new file. this is where the file's actual behavior lives, its main character energy 💅
• priv [in] — private data for the new file. heads up: this will be the file's private_data, so it's not just a vibe, it's literally getting stored there 🍓
• flags [in] — flags. that's it, that's the description, flags are flags, iconic of them honestly 🙈

---

💖 DESCRIPTION 💖

so here's the tea ☕: this thing creates a new file by hooking it on a single inode. one. singleton. that's the whole point, bestie.

that's highkey useful for files that do not need to have a full-fledged inode in order to operate correctly — like, they're out here functioning just fine without the whole elaborate setup, and honestly? relatable 😭

and the way that all the files created with anon_inode_getfd will use the same singleton inode?? obsessed. it reduces memory use and avoids code duplication for the file/inode/dentry setup. efficient queen behavior 👑✨

it returns a newly created file descriptor or an error code — so check your return value, diva, don't just assume it ate 🔥

---

🌟 SEE ALSO 🌟

go read these next, i'm literally begging you, the lore is deep:

• Kernel file ./fs/anon_inodes.c
• anon_inode_make_secure_inode(9)
• anon_inode_getfile(9)
• anon_inode_getfile_fmode(9)
• anon_inode_create_getfile(9)
• anon_inode_create_getfd(9)

---

and that's the whole page, bestie!! mwah 💋 this little beauty comes from ./fs and it's dated October 2026 — go forth and make your anonymous inodes proud, iykyk 🧚💜