generic_fh_to_parent(9)

💅 generic_fh_to_parent(9)

okay so this is from the Kernel API Manual, and bestie, it's a whole little helper function and honestly? she's iconic. ✨

---

🌸 NAME 🌸

generic_fh_to_parent — the generic helper for the fh_to_parent export operation 🫶

---

✨ SYNOPSIS ✨

struct dentry * generic_fh_to_parent (struct super_block *sb , struct
fid *fid , int fh_len , int fh_type , struct inode *(*get_inode) (struct
super_block *sb, u64 ino, u32 gen) );

no cap, that's the whole signature. look at her go. 💅

---

🎀 ARGUMENTS 🎀

• sb — the filesystem we're doing the file handle conversion on, like that's her whole job
• fid — the file handle that's getting converted, yes ma'am
• fh_len — length of the file handle, measured in bytes (bytes!! not vibes!!)
• fh_type — the type of the file handle, iykyk
• get_inode — the filesystem callback that goes and retrieves the inode 🧚

---

💖 DESCRIPTION 💖

So here's the tea: this function decodes fid — but only as long as it's one of the well-known Linux filehandle types, okay? vibe check first, always.

Once that's confirmed, she calls get_inode on it to retrieve the inode for the _parent_ object specified in the file handle, if it's actually specified in the file handle. And if it's not? NULL otherwise. periodt. 🦋

---

🔥 SEE ALSO 🔥

Kernel file ./fs/libfs.c:

• simple_offset_init(9)
• simple_offset_add(9)
• simple_offset_remove(9)
• simple_offset_rename(9)
• simple_offset_rename_exchange(9)
• simple_offset_destroy(9)
• offset_dir_llseek(9)
• offset_readdir(9)
• simple_rename_timestamp(9)
• simple_setattr(9)
• simple_write_end(9)
• simple_read_from_buffer(9)
• simple_write_to_buffer(9)
• memory_read_from_buffer(9)
• generic_encode_ino32_fh(9)
• generic_fh_to_dentry(9)
• simple_fsync_noflush(9)
• simple_fsync(9)
• generic_check_addressable(9)
• simple_get_link(9)
• generic_ci_d_compare(9)
• generic_ci_d_hash(9)
• generic_ci_match(9)
• generic_set_sb_d_ops(9)
• inode_maybe_inc_iversion(9)
• inode_query_iversion(9)
• simple_inode_init_ts(9)
• path_from_stashed(9)
• simple_start_creating(9)

like, that's the whole friend group right there 💜

---

k bye bestie, ily — this page lives in ./fs, dated October 2026, and she ate, no crumbs 👑💅