ubifs_lpt_init(9)

💅 ubifs_lpt_init(9) — the Kernel API Manual, bestie edition

okay so you found the <italic>ubifs_lpt_init</italic> page in the Kernel API Manual and you're like "what does this even do" — don't worry, I gotchu 🫶

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✨ NAME ✨

ubifs_lpt_init — literally just initialize the LPT 💖 that's the whole vibe.

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🌸 SYNOPSIS 🌸

int ubifs_lpt_init (struct ubifs_info *c , int rd , int wr );

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🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object, your main character struct 💅
• rd — whether to initialize lpt for reading 👀
• wr — whether to initialize lpt for writing ✍️

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🦋 DESCRIPTION 🦋

okay this is the part where the flags actually matter, so pay attention bestie, no cap:

• For mounting 'rw', rd and wr are both true 🔥
• For mounting 'ro', rd is true and wr is false
• For mounting from 'ro' to 'rw', rd is false and wr is true ✨

the way that this function just returns 0 on success and a negative error code on failure — iconic. nothing else, no drama 😭

ngl if you get a negative error code back, something went wrong. that's your vibe check failing 💀

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🌈 SEE ALSO 🌈

Kernel file ./fs/ubifs/lpt.c — and like, the entire extended friend group of functions, fr fr:

• 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)
• dirty_cow_pnode(9)
• ubifs_lpt_lookup_dirty(9)
• ubifs_lpt_calc_hash(9)
• lpt_check_hash(9)
• lpt_init_rd(9)
• lpt_init_wr(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)

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and that's the whole page, bestie!! 🧚 this little gem lives over in ./fs/ubifs and it's dated October 2026 — october?? yeah, iykyk 🍓 go forth and initialize those LPTs, you absolute queen 👑