ubifs_check_hash(9)

💅 ubifs_check_hash — a Kernel API Manual moment

okok so this is ubifs_check_hash, bestie, and it lives in the Kernel API Manual (yes that's the manual name, we're fancy now 🎀). Sit down, grab a strawberry drink 🍓, this one's actually short and it slaps.

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✨ SYNOPSIS ✨

int ubifs_check_hash (const struct ubifs_info *c , const u8 *expected ,
                      const u8 *got );

like… that's the whole thing. three args, one int, zero drama 💅

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🌸 ARGUMENTS 🌸

• c — the UBIFS file-system description object. it's giving "context, but make it filesystem" 🦋
• expected — the first hash. the one you thought it was gonna be 👑
• got — the second hash. the one you actually got. vibe check time 🙈

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💖 DESCRIPTION 💖

so the actual job is literally just: compare two hashes, expected and got. that's it. that's the function. no cap ✨

it's a comparison. a little hash-versus-hash moment. main character energy in its purest form 🔥

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🫶 RETURN 🫶

• 0 — they're equal 💚 everything's fine, nothing to see here, slay
• a negative error code — they're not equal 😭 not me getting a negative error code over this

heads up: the manpage says "a negative error code otherwise" — it does not promise a specific one, so don't go assuming a particular value, bestie. fr fr.

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🌈 SEE ALSO 🌈

okay this is where it gets unhinged, because the SEE ALSO list is long long. like, the whole ./fs/ubifs/ubifs.h kernel file worth of structs long 😭 but we don't skip, we list. all of them. periodt 💅

• struct ubifs_old_idx(9)
• struct ubifs_scan_node(9)
• struct ubifs_scan_leb(9)
• struct ubifs_gced_idx_leb(9)
• struct ubifs_inode(9)
• struct ubifs_unclean_leb(9)
• struct ubifs_lprops(9)
• struct ubifs_lpt_lprops(9)
• struct ubifs_lp_stats(9)
• struct ubifs_cnode(9)
• struct ubifs_pnode(9)
• struct ubifs_nbranch(9)
• struct ubifs_nnode(9)
• struct ubifs_lpt_heap(9)
• struct ubifs_wbuf(9)
• struct ubifs_bud(9)
• struct ubifs_jhead(9)
• struct ubifs_zbranch(9)
• struct ubifs_znode(9)
• struct bu_info(9)
• struct ubifs_node_range(9)
• struct ubifs_compressor(9)
• struct ubifs_budget_req(9)
• struct ubifs_orphan(9)
• struct ubifs_mount_opts(9)
• struct ubifs_budg_info(9)
• struct ubifs_stats_info(9)
• struct ubifs_info(9)
• ubifs_check_hmac(9)
• ubifs_branch_hash(9)
• ubifs_copy_hash(9)
• ubifs_auth_node_sz(9)

and all of that lives in the kernel file ./fs/ubifs/ubifs.h 🧚💜

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aaaand that's the page!! sourced from ./fs/ubifs, stamped October 2026, and it's ubifs_check_hash(9) from the Kernel API Manual — go forth and compare hashes responsibly, bestie 💅⭐🌸