validate_ref(9)

💅 validate_ref — ok so what does this one even do

hey bestie 🫶 welcome to the validate_ref(9) page from the Kernel API Manual — section 9, kernel developer girlies only, no cap. this is the whole thing, nothing skipped, you're gonna slay it.

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🌸 NAME 🌸

validate_ref — validates a reference node. that's it. that's the job. iconic of her honestly ✨

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🎀 SYNOPSIS 🎀

int validate_ref (struct ubifs_info *c , const struct ubifs_ref_node
*ref );

like, it takes two things and gives you back an int. simple. clean. main character energy 💅

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💖 ARGUMENTS 💖

• c — the UBIFS file-system description object 🦋 she's the whole filesystem's little info bundle, you know the vibe.
• ref — the reference node we're validating. this is the one on trial fr fr, we're doing a vibe check on her.

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🔥 DESCRIPTION 🔥

okay so here's the tea ☕ — this function returns 1 if a bud reference already exists for the LEB. and if the reference node is new? you get 0 back. easy.

but wait, there's more 😭 — if validation failed, you get -EINVAL returned instead. so basically three possible outcomes and you gotta actually check which one you got, bestie, don't just assume.

no skipping the return value check, i'm literally begging 🙈 that's the whole point of the function.

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🌈 SEE ALSO 🌈

all her friends live in the kernel file ./fs/ubifs/replay.c — go say hi 👑:

• struct replay_entry(9)
• struct bud_entry(9)
• set_bud_lprops(9)
• set_buds_lprops(9)
• trun_remove_range(9)
• inode_still_linked(9)
• apply_replay_entry(9)
• replay_entries_cmp(9)
• apply_replay_list(9)
• destroy_replay_list(9)
• insert_node(9)
• insert_dent(9)
• ubifs_validate_entry(9)
• is_last_bud(9)
• authenticate_sleb(9)
• replay_bud(9)
• replay_buds(9)
• destroy_bud_list(9)
• add_replay_bud(9)
• replay_log_leb(9)
• take_ihead(9)
• ubifs_replay_journal(9)

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⭐ the cute lil sign-off ⭐

this page comes to you from ./fs/ubifs, dated October 2026, and it's literally called validate_ref(9) in case you forgot in the last ten seconds 💜 mwah, go read the source, ily, bye 🧚‍♀️🍓