dirty_cow_pnode(9)

✨ dirty_cow_pnode(9) ✨

okay bestie, welcome to the Kernel API Manual — this is dirty_cow_pnode(9) and it's lowkey a whole vibe. no cap, it's a tiny little function but it's doing main character energy work in the UBIFS universe 🦋

---

💖 NAME 💖

dirty_cow_pnode — literally just making sure a pnode isn't in the middle of being committed. that's it, that's the whole job 🎀

---

🌸 SYNOPSIS 🌸

struct ubifs_pnode * dirty_cow_pnode (struct ubifs_info *c , struct ubifs_pnode *pnode );

like, look at her. iconic signature. no notes 💅

---

✨ ARGUMENTS ✨

• c — the UBIFS file-system description object. the whole vibe check of the filesystem lives in here 🫶
• pnode — the pnode you wanna check. the little guy in question ⭐

---

🔥 DESCRIPTION 🔥

so what does it actually do? bestie, it returns the dirtied pnode on success, or a negative error code on failure 😭 that's the flex. that's the whole function. simple, slay, done.

ngl if you get a negative error code back, that's your sign something went sideways — don't ignore it fr fr 💀

---

🌈 SEE ALSO 🌈

okay so this is the part where the manpage just lists, like, everyone this function knows. it's giving group chat with the entire ./fs/ubifs/lpt.c crew 👑 and here they all are, no one left out:

• do_calc_lpt_geom(9)
• ubifs_calc_lpt_geom(9)
• calc_dflt_lpt_geom(9)
• pack_bits(9)
• ubifs_unpack_bits(9)
• ubifs_pack_pnode(9)
• ubifs_pack_nnode(9)
• ubifs_pack_ltab(9)
• ubifs_pack_lsave(9)
• ubifs_add_lpt_dirt(9)
• set_ltab(9)
• ubifs_add_nnode_dirt(9)
• add_pnode_dirt(9)
• calc_nnode_num(9)
• calc_nnode_num_from_parent(9)
• calc_pnode_num_from_parent(9)
• ubifs_create_dflt_lpt(9)
• update_cats(9)
• replace_cats(9)
• check_lpt_crc(9)
• check_lpt_type(9)
• unpack_pnode(9)
• ubifs_unpack_nnode(9)
• unpack_ltab(9)
• unpack_lsave(9)
• validate_nnode(9)
• validate_pnode(9)
• set_pnode_lnum(9)
• ubifs_read_nnode(9)
• read_pnode(9)
• read_ltab(9)
• read_lsave(9)
• ubifs_get_nnode(9)
• ubifs_get_pnode(9)
• ubifs_pnode_lookup(9)
• ubifs_lpt_lookup(9)
• dirty_cow_nnode(9)
• ubifs_lpt_lookup_dirty(9)
• ubifs_lpt_calc_hash(9)
• lpt_check_hash(9)
• lpt_init_rd(9)
• lpt_init_wr(9)
• ubifs_lpt_init(9)
• struct lpt_scan_node(9)
• scan_get_nnode(9)
• scan_get_pnode(9)
• ubifs_lpt_scan_nolock(9)
• dbg_chk_pnode(9)
• dbg_check_lpt_nodes(9)

like, that's the whole extended friend group. iykyk 💜

---

aaaand that's the page! this little icon of a manpage came from ./fs/ubifs, dated October 2026, and it's filed under dirty_cow_pnode(9) 🍓 mwah, go read the whole lpt.c if you're obsessed (and honestly? you should be) 🧚✨