unpack_lsave(9)

💅 unpack_lsave(9) — like, the Kernel API Manual tea ☕✨

okay so bestie, we're in the Kernel API Manual today and this page is all about unpack_lsave 🎀 yes it's a kernel-internal thing, yes it's a (9) page, and yes we're gonna read it together 💖

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✨ NAME ✨

unpack_lsave — unpack the LPT's save table. that's it, that's the whole vibe 🫶

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🌸 SYNOPSIS 🌸

int unpack_lsave (const struct ubifs_info *c , void *buf );

like literally two args and an int return, she's lowkey iconic for that 💅

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🦋 ARGUMENTS 🦋

• c — the UBIFS file-system description object 💜 this is your whole filesystem's lil info bundle, she's the main character here
• buf — the buffer you're unpacking from 🍓 that's the source material, the raw bytes, the moment

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⭐ DESCRIPTION ⭐

so what does she actually do?? this function returns 0 on success and a negative error code on failure 😭 that's the whole description, no cap. that's it. that's the deal. zero means slay, negative means something went sideways 🙈

ngl the manpage is keeping it mysterious about the actual unpacking mechanics, so we're not gonna invent lore that isn't there — we just know: call it, get 0 or get a negative error code back, periodt 💀

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👑 SEE ALSO 👑

the kernel file lives at ./fs/ubifs/lpt.c and here's the whole friend group, all of them, not skipping a single one 🧚✨

• 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)
• 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)
• 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, if you're gonna read one of these, you might as well read all of them — that's the group chat energy fr fr 🌈

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and that's the page bestie!! 🎀 this lil beauty comes from ./fs/ubifs and it's dated October 2026 — so mark your calendars, she's a future icon 💖✨ bye bestie, go unpack some save tables responsibly 🫶💜